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130-585: Grauballe Man has been described as "one of the most spectacular discoveries from Denmark's prehistory" because it is one of the most exceptionally preserved bog bodies in the world. Upon excavation in 1952, it was moved to the Prehistoric Museum in Aarhus , where it underwent research and conservation. In 1955 the body went on display at the Moesgaard Museum near Aarhus, where it can still be seen today. Due to

260-550: A rewilding effort in Geding-Kasted Bog and continuous monitoring of the four Natura 2000 areas in the municipality. Aarhus has a population of 261,570 on 91 square kilometres (35 sq mi) for a density of 2,874/km (7,444/sq mi). Aarhus municipality has a population of 330,639 on 468 km with a density of 706/km (1,829/sq mi). Less than a fifth of the municipal population resides beyond city limits and almost all live in an urban area. The population of Aarhus

390-441: A bath solution containing vegetable tannins, such as found in gallnuts , the leaves of sumac , the leaves of certain acacia trees, the outer green shells of walnuts , among other plants. The use of vegetable tanning is a process that takes longer than mineral tanning when converting rawhides into leather. Mineral tanned leather is used principally for shoes, car seats, and upholstery in homes (sofas, etc.). Vegetable tanned leather

520-472: A central component in the local economy. The biotech industry is well-established in the city, with many small- and medium-sized companies mainly focused on research and development. There are multiple Big Tech companies with offices in the city, including Uber and Google . Several major companies are headquartered in Aarhus, including four of the ten largest in the country. These include Arla Foods , one of

650-409: A few kilometres south of the Aarhus city centre. The centre of Aarhus was originally a pagan burial site until Aarhus's first Christian church, Holy Trinity Church, a timber structure, was built upon it during the reign of Frode , King of Jutland, around 900. The bishopric of Aarhus dates back to at least 948 when Adam of Bremen reported that the missionary bishop Reginbrand of Aros attended

780-416: A few so-called ghettos , defined as residential areas with more than half of inhabitants from non-Western countries and with relatively high levels of poverty and/or crime. Gellerup is the most notable neighbourhood in that respect. The ghetto-labelling has been criticized as unnecessarily stigmatising and counterproductive for social and economical development of the related areas. The economy of Aarhus

910-427: A high content of glycine , proline , and hydroxyproline , usually in the repeat -gly-pro-hypro-gly-. These residues give rise to collagen's helical structure. Collagen's high content of hydroxyproline allows cross-linking by hydrogen bonding within the helical structure. Ionized carboxyl groups (RCO 2 ) are formed by the action of hydroxide. This conversion occurs during the liming process, before introduction of

1040-480: A large factor in how hazardous wastewater results in contaminating the environment. This is especially prominent in small and medium-sized tanneries in developing countries. The UN Leather Working Group (LWG) "provides an environmental audit protocol, designed to assess the facilities of leather manufacturers," for "traceability, energy conservation, [and] responsible management of waste products." Untanned hides can be dried and made pliable by rubbing and stretching

1170-422: A new business and residential quarter. The main bus terminal close by is planned to be moved to the central railway station and the site will be redeveloped to a new residential neighbourhood. Elsewhere in the inner city, the site of the former Ceres breweries was redeveloped in 2012–2019 as a new mixed use neighbourhood known as CeresByen . Construction of Aarhus Letbane , the first light rail system in

1300-626: A period of creativity and optimism; Gaffa and the KaosPilot school were founded in 1983 and 1991 respectively, and Aarhus was at the centre of a renaissance in Danish rock and pop music launching bands and musicians such as TV2 , Gnags , Thomas Helmig , Bamses Venner , Anne Dorte Michelsen , Mek Pek and Shit & Chanel . Since the turn of the millennium, Aarhus has seen an unprecedented building boom with many new institutions, infrastructure projects, city districts and recreational areas. Several of

1430-403: A process which permanently alters the protein structure of skin, making it more durable and less susceptible to decomposition and coloring. The place where hides are processed is known as a tannery . The English word for tanning is from medieval Latin tannāre , derivative of tannum ( oak bark ), from French tan (tanbark), from old-Cornish tann (oak). These terms are related to

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1560-430: A salt solution. After the hair was loosened, the tanners scraped it off with a knife. Once the hair was removed, the tanners would " bate " (soften) the material by pounding dung into the skin, or soaking the skin in a solution of animal brains. Bating was a fermentative process that relied on enzymes produced by bacteria found in the dung. Among the kinds of dung commonly used were those of dogs or pigeons. Historically

1690-442: A tanning agent. They are then soaked, stretched, dried, and sometimes smoked. Preparing hides begins by curing them with salt to prevent putrefaction of the collagen from bacterial growth during the time lag from procuring the hide to when it is processed. Curing removes water from the hides and skins using a difference in osmotic pressure. The moisture content of hides and skins is greatly reduced, and osmotic pressure increased, to

1820-627: A third of those employed within the Aarhus municipality commute from neighbouring communities. Aarhus is a centre for retail in the Nordic and Baltic countries, with expansive shopping centres, the busiest commercial street in the country and a dense urban core with many speciality shops. The job market is knowledge- and service-based, and the largest employment sectors are healthcare and social services, trade, education, consulting, research, industry and telecommunications. The municipality has more high- and middle-income jobs, and fewer low-income jobs, than

1950-785: A time in 2001–2002 when it underwent more modern scientific study, including radiological study , CT scanning , 3D visualisation, stereolithography and analyses of the gut contents. The Grauballe Man is the subject of the eponymous poem in Seamus Heaney 's 1975 poetry collection North , while the Tollund Man figures in his 1972 volume Wintering Out . 56°12′35″N 9°37′49″E  /  56.20972°N 9.63028°E  / 56.20972; 9.63028 Aarhus Aarhus ( / ˈ ɔːr h uː s / , US also / ˈ ɑːr -/ , Danish: [ˈɒːˌhuˀs] ; officially spelled Århus from 1948 until 1 January 2011)

2080-415: A total of four churches. The 13th century also marks a thorough reorganisation, erasing most of the town's original layout with new streets, relocations, dismantling and new constructions. The Church clearly had the upper hand in the Aarhus region during medieval times, and the large bishopric of Aarhus prospered and expanded territory, reaching as far as Viborg in extent. In 1441, Christopher III issued

2210-546: A year (2012). Grain is the principal export, while feedstuffs , stone, cement and coal are among the chief imports. Since 2012 the port has faced increasing competition from the Port of Hamburg and freight volumes have decreased somewhat from the peak in 2008. The ferry terminal presents the only alternative to the Great Belt Link for passenger transport between Jutland and Zealand . It has served different ferry companies since

2340-598: Is 10 hours and 30 minutes. Aarhus is the seat of Aarhus Municipality, and Aarhus City Council ( Aarhus Byråd ) is also the municipal government with headquarters in Aarhus City Hall . The Mayor of Aarhus since 2010 is Jacob Bundsgaard of the Social Democrats . Municipal elections are held every fourth year on the third Tuesday of November with the next election in 2021. The city council consists of 31 members elected for four-year terms. When an election has determined

2470-460: Is a compound of the two Old Norse words; ár , genitive of á ("river", Modern Danish å ), and oss ("mouth") referencing the city's location at the mouth of Aarhus Å ( Aarhus River ). In Valdemar's Census Book (1231) the city was called Arus , and in Icelandic it was known as Aros , later written as Aars. The spelling "Aarhus" is first found in 1406 and gradually became

2600-490: Is a type of longship ), east of the Brabrand Lake close to Viby , and it was in use for more than 400 years from the late 700s till around the mid-1200s. Archaeological evidence indicates that Aarhus was a town as early as the last quarter of the 8th century. Discoveries after a 2003 archaeological dig included half-buried longhouses , firepits, glass pearls and a road dated to the late 700s. Several excavations in

2730-479: Is both younger and better-educated than the national average which can be attributed to the high concentration of educational institutions. More than 40% of the population have an academic degree while only some 14% have no secondary education or trade. The largest age group is 20- to 29-year-olds and the average age is 37.5, making it the youngest city in the country and one of its youngest municipalities. Women have slightly outnumbered men for many years. The city

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2860-469: Is by far the largest religious institution both in the city and the country as a whole. Some 20% of the population are not officially affiliated with any religion, a percentage that has been slowly rising for many years. During the 1990s there was significant immigration from Turkey and in the 2000s, there was a fast growth in the overall immigrant community, from 27,783 people in 1999 to 40,431 in 2008. The majority of immigrants have roots outside Europe and

2990-419: Is considered one of the most effective tanning compounds. Chromium-tanned leather can contain between 4 and 5% of chromium. This efficiency is characterized by its increased hydrothermal stability of the skin, and its resistance to shrinkage in heated water. Vegetable tanning uses tannins (a class of polyphenol astringent chemicals), which occur naturally in the bark and leaves of many plants. Tannins bind to

3120-403: Is consistent with cross-linking by polychromium species, of the sort arising from olation and oxolation. Before the introduction of the basic chromium species in tanning, several steps are required to produce a tannable hide. The pH must be very acidic when the chromium is introduced to ensure that the chromium complexes are small enough to fit between the fibers and residues of the collagen. Once

3250-416: Is excellent for use in handbags and garments. After application of the chromium agent, the bath is treated with sodium bicarbonate in the basification process to increase the pH to 3.8–4.0, inducing cross-linking between the chromium and the collagen. The pH increase is normally accompanied by a gradual temperature increase up to 40 °C. Chromium's ability to form such stable bridged bonds explains why it

3380-452: Is home to 75 different religious groups and denominations, most of which are Christian or Muslim with a smaller number of Buddhist, Hindu, and Jewish communities. Since the 1990s there has been a marked growth in diverse new spiritual groups although the total number of followers remains small. The majority of the population are members of the Protestant state church, Church of Denmark , which

3510-567: Is home to a Bronze Age barrow shrouded in local myths and legends. The hilly area around Aarhus consists of a morainal plateau from the last ice age, broken by a complex system of tunnel valleys . The most prominent valleys of this network are the Aarhus Valley in the south, stretching inland east–west with the Aarhus River, Brabrand Lake, Årslev Lake and Tåstrup Lake, and the Egå Valley to

3640-419: Is not very flexible. It is used for luggage, furniture, footwear, belts, and other clothing accessories. Wet white is a term used for leathers produced using alternative tanning methods that produce an off-white colored leather. Like wet blue, wet white is also a semifinished stage. Wet white can be produced using aldehydes , aluminum, zirconium, titanium, or iron salts, or a combination thereof. Concerns with

3770-468: Is predominantly knowledge- and service-based, strongly influenced by the University of Aarhus and the large healthcare industry. The service sector dominates the economy and is growing as the city transitions away from manufacturing. Trade and transportation remain important sectors, benefiting from the large port and central position on the rail network. Manufacturing has been in slow but steady decline since

3900-428: Is preferred. Once bating is complete, the hides and skins are treated by first soaking them in a bath containing common salt (sodium chloride), usually 1 quart of salt to 1 gallon of hot water. When the water cools, one fluid ounce of sulfuric acid is added. Small skins are left in this liquor for 2 days, while larger skins between 1 week and as much as 2 months. In vegetable tanning, the hides are made to soak in

4030-421: Is tawed by soaking in a warm potash alum and salts solution, between 20 and 30 °C (68 and 86 °F). The process increases the hide's pliability, stretchability, softness, and quality. Then, the hide is air dried (crusted) for several weeks, which allows it to stabilize. The use of alum alone for tanning rawhides is not recommended, as it shrinks the surface area of the skin, making it thicker and hard to

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4160-420: Is the characteristic of the keratin class of proteins that gives strength to hair and wools (keratin typically makes up 90% of the dry weight of hair). The hydrogen atoms supplied by the sharpening agent weaken the cystine molecular link whereby the covalent disulfide bond links are ultimately ruptured, weakening the keratin. To some extent, sharpening also contributes to unhairing, as it tends to break down

4290-532: Is the longest cathedral in Denmark with a total length of 93 m (305 ft). The Church of our Lady ( Vor Frue Kirke ) was originally built in 1060, making it the oldest stone church in Scandinavia. The City Hall , designed by Arne Jacobsen and Erik Møller , was completed in 1941 in a modern Functionalist style. Aarhus Theatre , the largest provincial theatre in Denmark, opposite the cathedral on Bispetorvet,

4420-455: Is the process of treating skins and hides of animals to produce leather . A tannery is the place where the skins are processed. Historically, vegetable based tanning used tannin , an acidic chemical compound derived from the bark of certain trees, in the production of leather. An alternative method, developed in the 1800s, is chrome tanning, where chromium salts are used instead of natural tannins. Tanning hide into leather involves

4550-573: Is the second-largest city in Denmark and the seat of Aarhus Municipality . It is located on the eastern shore of Jutland in the Kattegat sea and approximately 187 kilometres (116 mi) northwest of Copenhagen . Dating back to the late 8th century, Aarhus was founded as a harbour settlement at the mouth of the Aarhus River and quickly became a trade hub. The first Christian church was built here around

4680-439: Is used as a leather tanning agent, can cause problems in the kidneys and liver and is also considered a carcinogen . Formaldehyde and arsenic, which are used for leather finishing, cause health problems in the eyes, lungs, liver, kidneys, skin, and lymphatic system and are also considered carcinogens. The waste from leather tanneries is detrimental to the environment and the people who live in it. The use of old technologies plays

4810-461: Is used in leather crafting and in making small leather items, such as wallets, handbags and clothes. Chromium(III) sulfate ( [Cr(H 2 O) 6 ] 2 (SO 4 ) 3 ) has long been regarded as the most efficient and effective tanning agent. Chromium(III) compounds of the sort used in tanning are significantly less toxic than hexavalent chromium , although the latter arises in inadequate waste treatment. Chromium(III) sulfate dissolves to give

4940-923: The Atlantic Wall in west Jutland and cargo headed for Germany. Combined, these factors resulted in a strong German presence, especially in 1944–45. Small resistance groups first appeared in 1941–42 but the first to co-ordinate with the Freedom Council was the Samsing Group , responsible for most operations from early 1943. The Samsing group, along with others in and around Aarhus, was dismantled in June 1944 when Grethe "Thora" Bartram turned her family and acquaintances over to German authorities. In response, requests for assistance were sent to contacts in England and in October 1944

5070-645: The Baltic Sea . The ARoS Art Museum , the Old Town Museum and Tivoli Friheden are among Denmark's top tourist attractions . With a combined total of almost 1.4 million visitors they represent the driving force behind tourism but other venues such as Moesgård Museum and Kvindemuseet are also popular. The city's extensive shopping facilities are also said to be a major attraction for tourists, as are festivals, especially NorthSide and SPOT . Many visitors arrive on cruise ships: in 2012, 18 vessels visited

5200-605: The Danish straits and the fertile countryside. The trade, however, was not nearly as prominent as that in Ribe and Hedeby during the Viking Age, and it was primarily linked to Norway as evidenced by archaeological finds. A shipbuilding yard from the Viking Age was uncovered upriver in 2002 by archaeologists. It was located at a place formerly known as Snekkeeng , or Snekke Meadow in English ('Snekke'

5330-685: The Folketing (national Parliament). The diocese of Aarhus has four deaneries composed of 60 parishes within Aarhus municipality. Aarhus municipality contains 21 postal districts and some parts of another 9. The urban area of Aarhus and the immediate suburbs are divided into the districts Aarhus C , Aarhus N , Aarhus V , Viby J , Højbjerg and Brabrand . Aarhus has increasingly been investing in environmental planning and, in accordance with national policy, aims to be CO 2 -neutral and independent of fossil fuels for heating by 2030. The municipal power plants were adapted for this purpose in

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5460-587: The Peter group . The increasingly destructive occupation was compounded when an ammunition barge exploded in July 1944, destroying much of the harbour area. On 5 May 1945 German forces in Denmark surrendered but during the transitional period fighting broke out resulting in 22 dead. On 8 May the British Royal Dragoons entered the city. In the 1970s and 1980s the city entered a period of rapid economic growth and

5590-647: The Royal Air Force bombed the Gestapo headquarters successfully destroying archives and obstructing the ongoing investigation. In the summer of 1944 the Copenhagen-based resistance group Holger Danske helped establish the 5 Kolonne group and an SOE agent arrived from England to liaison with the L-groups . Subsequently, resistance operations escalated which was countered with Schalburgtage terror operations by

5720-497: The Sumerians began using leather, affixed by copper studs , on chariot wheels . The process of tanning was also used for boats and fishing vessels: ropes, nets, and sails were tanned using tree bark. Formerly, tanning was considered a noxious or "odoriferous trade" and relegated to the outskirts of town, among the poor. Tanning by ancient methods is so foul-smelling that tanneries are still isolated from those towns today where

5850-516: The Swedish wars and trade was dampened by the preferential treatment of the capital by the state. Not until the middle of the 18th century did growth return, in large part due to trade with the large agricultural catchment areas around the city; grain, particularly, proved to be a remunerative export. The first factories were established at this time, as the Industrial Revolution reached

5980-407: The Tollund Man . The actual manner of his death was by having his throat cut from ear to ear, severing his trachea and oesophagus . Such a wound could not have been self-inflicted, indicating that this was not suicide . A damaged area to the skull that was initially thought to have been inflicted by a blow to the head, has since been determined by a CT scan to have been fractured by pressure from

6110-428: The district heating system. Since 2015, the city has been implementing energy-saving LED technology in street lighting; by January 2019, about half of the municipal street lighting had been changed. Apart from reducing the city's CO 2 emissions, it saves 30% on the electricity bill, thereby making it a self-financed project over a 20-year period. The municipality aims for a coherent and holistic administration of

6240-527: The dockyard Aarhus Flydedok and the oil mill Århus Oliefabrik . Aarhus became the largest provincial city in the country by the turn of the century and the city marketed itself as the "Capital of Jutland". The population increased from 15,000 in 1870 to 52,000 in 1901 and, in response, the city annexed large land areas to develop new residential quarters such as Trøjborg , Frederiksbjerg and Marselisborg . Many of its cultural institutions were also established at this time such as Aarhus Theatre (1900),

6370-700: The octroi was abolished and the city walls were removed to provide easier access for trade. Regular steamship links with Copenhagen had begun with the Jylland in 1825–26 and the Dania (1827–36), and in 1862 Jutland's first railway was established between Aarhus and Randers . In the second half of the 19th century, industrialisation came into full effect and a number of new industries emerged around production and refinement of agricultural products, especially oil and butter. Many companies from this time would come to leave permanent iconic marks on Aarhus. The Ceres Brewery

6500-694: The pre-quaternary . By contrast, the Aarhus River Valley and the Giber River Valley are late glacial meltwater valleys . The coastal cliffs along the Bay of Aarhus consist of shallow tertiary clay from the Eocene and Oligocene (57 to 24 million years ago). Aarhus has a temperate oceanic climate ( Köppen : Cfb ) and the weather is constantly influenced by major weather systems from all four ordinal directions , resulting in unstable conditions throughout

6630-589: The synod of Ingelheim in Germany, but the late Viking Age during the Christianization of Scandinavia was a turbulent and violent time with several naval attacks on the town, such as Harald Hardrada 's assault around 1050, when the Holy Trinity Church was burned to the ground. Despite the conflicts, Aarhus continued to prosper from the trade and the finding of six runestones in and around Aarhus indicates

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6760-421: The water cycle to protect against, and clean up previous, pollution as well as encourage green growth and self-sufficiency. The main issues are excessive nutrients , adapting to increased (and increasing) levels of precipitation brought on by climate change , and securing the water supply. These goals have manifested in a number of large water treatment projects often in collaboration with private partners. In

6890-418: The 1844 elections, only 174 citizens qualified out of a total population of more than 7,000. The first city council, mainly composed of wealthy merchants and industrialists, quickly looked to improve the harbour, situated along the Aarhus River . Larger ships and growing freight volumes made a river harbour increasingly impractical. In 1840, the harbour was moved to the coast, north of the river, where it became

7020-420: The 1960s while agriculture has long been a marginal sector within the municipality. The municipality is home to 175,000 jobs with some 100,000 in the private sector and the rest split between state, region and municipality. The region is a major agricultural producer , with many large farms in the outlying districts. People commute to Aarhus from as far away as Randers , Silkeborg and Skanderborg and almost

7150-501: The 19th century. The city began to grow significantly as trade prospered in the mid-18th century, but not until the mid-19th century did the Industrial Revolution bring real growth in population. The first railway line in Jutland was built here in 1862. In 1928, the first university in Jutland was founded in Aarhus and today it is a university city and the largest centre for trade, services, industry, and tourism in Jutland. Aarhus Cathedral

7280-533: The 2000s, underground rainwater basins were built across the city while the two lakes Årslev Engsø and Egå Engsø were created in 2003 and 2006 respectively. The number of sewage treatment plants is planned to be reduced from 17 to 2 by 2025, as the treatment plants in Marselisborg and Egå are scheduled for expansion to take over all waste water treatment. They have already been refitted for biogas production to become net producers of electricity and heat. To aid

7410-531: The 2010s. In 2015, the municipality took over three private straw -fired heating plants and the year after, a new 77 MW combined heat and power biomass plant at Lisbjerg Power Station was completed while Studstrup Power Station finished a refit to move from coal to wood chips. In conjunction with the development of the Docklands district there are plans for a utility-scale seawater heat pump which will take advantage of fluctuating electricity prices to supply

7540-588: The Aa spelling as an alternative and most newspapers and public institutions will accept either. Some official authorities such as the Danish Language Committee , publisher of the Danish Orthographic Dictionary , still retain Århus as the main name, providing Aarhus as a second option, in brackets and some institutions are still using Århus explicitly in their official name, such as

7670-530: The Aarhus Bay imposing a temperate effect on the low-lying valley floor where central Aarhus is located. Brabrand Lake to the west further contributes to this effect and as a result, the valley has a comparably mild, temperate climate. The sandy ground on the valley floor dries up quickly after winter and warms faster in the summer than the surrounding hills of moist-retaining boulder clay . These conditions affect crops and plants that often bloom 1–2 weeks earlier in

7800-446: The Bay of Aarhus provides a natural harbour with a depth of 10 m (33 ft) quite close to the shore. Aarhus was founded at the mouth of a brackish water fjord , but the original fjord no longer exists, as it has gradually narrowed into what is now the Aarhus River and the Brabrand Lake , due to natural sedimentation . The land around Aarhus was once covered by forests, remains of which exist in parts of Marselisborg Forest to

7930-593: The Danish Preserved Butter Company in 1874, focusing on butter export to England, China and Africa and later founded the Aarhus Butterine Company in 1883, the first Danish margarine factory. His company became an important local employer, with factory employees increasing from 100 in 1896 to 1,000 in 1931, partaking in the effective transformation of the city from a regional trade hub to an industrial centre. Other new factories of note included

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8060-510: The German advance through Jutland. The war and occupation left a notable impact on the city as many streets, particularly on Frederiksbjerg , are named after Danish officers of the time. Fifteen years later, in 1864, the city was occupied again, this time for seven months, during the Second Schleswig War . In spite of wars and occupation, the city continued to expand and develop. In 1851,

8190-516: The Moesgård Museum, Gender Museum Denmark , Musikhuset Aarhus and Aarhus Theatre . Known as Smilets By (lit. City of Smiles) it is the Danish city with the youngest demographics and home to Scandinavia 's largest university, Aarhus University . Commercially, the city is the principal container port in the country, and major Danish companies such as Vestas , Arla Foods , Salling Group , and Jysk have their headquarters there. Aarhus

8320-511: The Old . The fortifications were later improved and expanded by his son Harald Bluetooth , encircling the settlement much like the defence structures found at Viking ring fortresses elsewhere. Together with the town's geographical placement, this suggests that Aros became an important military centre in the Viking Age. There are also strong indications of a former royal residence from the same period in Viby ,

8450-463: The United Kingdom. Overall, they spend roughly DKK 3 billion (€402 million) in the city each year. The primary motivation for tourists choosing Aarhus as a destination is experiencing the city and culture, family and couples vacation or as a part of a round trip in Denmark. The average stay is little more than three days on average. Tanning (leather) Tanning , or hide tanning ,

8580-407: The Viking Age, were abandoned to accommodate expansion. Parts of the ramparts still exist today and can be experienced as steep slopes at the riverside, and they have also survived in some place names of the inner city, including the streets of Volden (The Rampart) and Graven (The Moat). Aarhus grew to become one of the largest cities in the country by the early 16th century. In 1657, octroi

8710-411: The actual tanning process used vegetable tanning. In some variations of the process, cedar oil , alum , or tannin was applied to the skin as a tanning agent. As the skin was stretched, it would lose moisture and absorb the agent. Following the adoption in medicine of soaking gut sutures in a chromium (III) solution after 1840, it was discovered that this method could also be used with leather and thus

8840-403: The bay to the northeast. Mols and Helgenæs are both part of the larger regional peninsula of Djursland . A number of larger cities and towns is within easy reach from Aarhus by road and rail, including Randers (38.5 kilometres (23.9 mi) by road north), Grenå (northeast), Horsens (50 kilometres (31 mi) south) and Silkeborg (44 kilometres (27 mi) east). At Aarhus's location,

8970-413: The bog long after his death. An analysis of the intestines found numerous scleroties of the ergot fungus Claviceps purpurea . He was around 30 years old when he died. The Grauballe Man's body was discovered buried in the bog on 26 April 1952 by a team of peat diggers. One of the workers, Tage Busk Sørensen, stuck his spade into something that he knew was not peat; upon revealing more, they discovered

9100-485: The case of Bangladesh, chickens (the nation's most common source of protein). Up to 25% of the chickens in Bangladesh contained harmful levels of hexavalent chromium, adding to the national health problem load. Chromium is not solely responsible for these diseases. Methylisothiazolinone , which is used for microbiological protection (fungal or bacterial growth), causes problems with the eyes and skin. Anthracene , which

9230-435: The city had some significance around the year 1000, as only wealthy nobles traditionally used them. The bishopric diocese was obliterated for almost a hundred years after Reginbrand in 988, but in 1060 a new bishop Christian was ordained and he founded a new church in Aarhus, Sankt Nicolai Domkirke ( St. Nicholas Cathedral ), this time in stone. It was erected outside the town fortifications, and stood finished in 1070 at

9360-503: The city seaside, are being converted to new mixed-use districts. It is among the largest harbourfront projects in Europe. The northern part dubbed Aarhus Ø ( Aarhus Docklands ) is almost finished as of 2018, while the southern district dubbed Sydhavnskvarteret (The South-harbour neighbourhood) is only starting to be developed. The adjacent site of Frederiks Plads at the former DSB repair facilities have been under construction since 2014 as

9490-445: The city, such as the Aarhus River, changed from Århus Å to Aarhus Å . Founded in the early Viking Age , Aarhus is one of the oldest cities in Denmark, along with Ribe and Hedeby . The original Aros settlement was situated on the northern shores of a fjord by the mouth of the Aarhus River , right where the city center is today. It quickly became a hub for sea-going trade due to its position on intersecting trade routes in

9620-459: The collagen proteins in the hide and coat them, causing them to become less water-soluble and more resistant to bacterial attack. The process also causes the hide to become more flexible. The primary barks processed in bark mills and used in modern times are chestnut , oak , redoul , tanoak , hemlock , quebracho , mangrove , wattle (acacia; see catechol ), and myrobalans from Terminalia spp., such as Terminalia chebula . In Ethiopia ,

9750-416: The collagen's carboxyl groups, amine groups from the side chains of the amino acids , and masking agents. Masking agents are carboxylic acids , such as acetic acid , used to suppress formation of polychromium(III) chains. Masking agents allow the tanner to further increase the pH to increase collagen's reactivity without inhibiting the penetration of the chromium(III) complexes. Collagen is characterized by

9880-540: The combined vegetable oils of Niger seed ( Guizotia abyssinica ) and flaxseeds were used in treating the flesh side of the leather, as a means of tawing, rather than of tanning. In Yemen and Egypt , hides were tanned by soaking them in a bath containing the crushed leaves and bark of the Salam acacia (Acacia etbaica; A. nilotica kraussiana). Hides that have been stretched on frames are immersed for several weeks in vats of increasing concentrations of tannin. Vegetable-tanned hide

10010-417: The composition of the council, it elects a mayor, two deputy mayors and five aldermen from their ranks. Anyone who is eligible to vote and who resides within the municipality can run for a seat on the city council provided they can secure endorsements and signatures from 50 inhabitants of the municipality. The first publicly elected mayor of Aarhus was appointed in 1919. In the 1970 Danish Municipal Reform

10140-481: The construction projects are among the largest in Europe, such as the New University Hospital (DNU) and the harbourfront redevelopment. Both the skyline and land use of the inner city is changing, as former industrial sites are being redeveloped into new city districts and neighbourhoods. Starting in 2008, the former docklands known as De Bynære Havnearealer (The Peri-urban Harbour-areas), and closest to

10270-422: The country, and in 1810 the harbour was expanded to accommodate growing trade. Aarhus began to prosper in the 1830s as the industrial revolution reached the city and factories with steam-driven machinery became more productive. In 1838, the electoral laws were reformed leading to elections for the 15 seats on the city council. The rules were initially very strict, allowing only the wealthiest citizens to run. In

10400-492: The country, commenced in 2013, and the first increment was finished in December 2017. Since then, the lightrail service has been expanded with two intercity sections to the towns of Odder and Grenå , respectively, and also includes a northward leg to the suburb of Lisbjerg . The light rail system is planned to tie many other suburbs closer to central Aarhus in the future, with the next phase including local lines to Brabrand in

10530-461: The current Aarhus municipality was created by merging 20 municipalities. Aarhus was the seat of Aarhus County until the 2007 Danish municipal reform, which substituted the Danish counties with five regions and replaced Aarhus County with Central Denmark Region ( Region Midtjylland ), seated in Viborg . Aarhus Municipality has 45 electoral wards and polling stations in four electoral districts for

10660-409: The desired level of penetration of chrome into the substance is achieved, the pH of the material is raised again to facilitate the process. This step is known as basification. In the raw state, chrome-tanned skins are greyish-blue, so are referred to as wet blue . Chrome tanning is faster than vegetable tanning (taking less than a day for this part of the process) and produces a stretchable leather which

10790-527: The developed world, comprising some 25,000 people from 130 different nationalities, with the largest groups coming from the Middle East and North Africa. Some 15,000 have come from within Europe, with Poland, Germany, Romania and Norway being the largest contributors. Many immigrants have established themselves in the suburbs of Brabrand , Hasle and Viby , where the percentage of inhabitants with foreign origins has risen by 66% since 2000. This has resulted in

10920-495: The early 2000s, the city has experienced an influx of larger companies moving from other parts of the Jutland peninsula. The Port of Aarhus is one of the largest industrial ports in northern Europe with the largest container terminal in Denmark, processing more than 50% of Denmark's container traffic and accommodating the largest container vessels in the world. It is a municipal self-governing port with independent finances. The facilities handle some 9.5 million tonnes of cargo

11050-470: The east and Hinnerup to the north. Accelerating growth since the early 2000s, brought the inner urban area to roughly 260,000 inhabitants by 2014. The rapid growth is expected to continue until at least 2030 when Aarhus municipality has set an ambitious target for 375,000 inhabitants. Aarhus is located at the Bay of Aarhus facing the Kattegat sea in the east with the peninsulas of Mols and Helgenæs across

11180-425: The end use of the leather, hides may be treated with enzymes to soften them, a process called bating . In modern tanning, these enzymes are purified agents, and the process no longer requires bacterial fermentation (as from dung-water soaking) to produce them. Pickling is another term for tanning, or what is the modern equivalent of turning rawhide into leather by the use of modern chemical agents, if mineral tanning

11310-562: The fibers with a hide stretcher, and fatting. However the hide will revert to rawhide if not periodically replenished with fat or oil, especially if it gets wet. Many Native Americans of the arid western regions wore clothing made by this process. Smoke tanning is listed among the conventional methods like chrome tanning and vegetable tanning. Impregnation of the hide's cells with formaldehyde (from smoke) offers some microbial and water resistance. Leftover leather would historically be turned into glue . Tanners would place scraps of hides in

11440-427: The first steamship route to Copenhagen opened in 1830. Currently, Mols-Linien operates the route and annually transports some two million passengers and a million vehicles. Additional roll-on/roll-off cargo ferries serve Finland and Kalundborg on a weekly basis and smaller outlying Danish ports at irregular intervals. Since the early 2000s the port has increasingly become a destination for cruise lines operating in

11570-418: The hair proteins. The isoelectric point of the collagen (a tissue-strengthening protein unrelated to keratin) in the hide is also shifted to around pH 4.7 due to liming. Any hairs remaining after liming are removed mechanically by scraping the skin with a dull knife, a process known as scudding. The pH of the collagen is then reduced so the enzymes may act on it in a process known as deliming. Depending on

11700-489: The head protruding from the ground, and the local postman, who was passing, alerted the local doctor as well as an amateur archaeologist named Ulrik Balslev. With the body still in the peat, various locals came to visit it the next day, one of whom accidentally stepped on its head. The following morning, Professor Peter Glob from the Prehistory Museum at Aarhus came to visit the body, and arranged for it to be moved to

11830-406: The hexaaquachromium(III) cation, [Cr(H 2 O) 6 ] , which at higher pH undergoes processes called olation to give polychromium(III) compounds that are active in tanning, being the cross-linking of the collagen subunits. The chemistry of [Cr(H 2 O) 6 ] is more complex in the tanning bath rather than in water due to the presence of a variety of ligands. Some ligands include the sulfate anion,

11960-406: The hides are soaked in clean water to remove the salt left over from curing and increase the moisture so that the hide or skin can be further treated. To prevent damage of the skin by bacterial growth during the soaking period, biocides , typically dithiocarbamates , may be used. Fungicides such as TCMTB may also be added later in the process, to protect wet leathers from mold growth. After 1980,

12090-512: The hypothetical Proto-Indo-European * dʰonu meaning ' fir tree'. (The same word is source for Old High German tanna meaning 'fir', related to modern German Tannenbaum ). Ancient civilizations used leather for waterskins , bags, harnesses and tack, boats, armour , quivers , scabbards , boots , and sandals . Tanning was being carried out by the inhabitants of Mehrgarh in Pakistan between 7000 and 3300 BCE. Around 2500 BCE ,

12220-409: The inner city since the 1960s have revealed wells, streets, homes and workshops, and inside the buildings and adjoining archaeological layers, everyday utensils like combs, jewellery and basic multi-purpose tools from approximately the year 900 have been unearthed. The early town was fortified with defensive earthen ramparts in the first part of the 900s, possibly in the year 934 on order from king Gorm

12350-409: The largest dairy groups in Europe, Salling Group , Denmark's largest retailer, Jysk , a worldwide retailer of household goods, Vestas , a global wind turbine manufacturer, Terma A/S , a major defence and aerospace manufacturer, Per Aarsleff , a civil engineering company and several large retail companies. Other large employers of note include Krifa, Systematic A/S , ), and Bestseller A/S . Since

12480-522: The largest industrial harbour outside Copenhagen over the following 15 years. From the outset, the new harbour was controlled by the city council, as it is to this day. During the First Schleswig War , Aarhus was occupied by German troops from 21 June to 24 July 1849. The city was spared any fighting, but in Vejlby north of the city a cavalry skirmish known as Rytterfægtningen took place which stopped

12610-407: The local newspaper Århus Stiftstidende and the schools Århus Kunstakademi and Århus Statsgymnasium . "Aa" was used by some major institutions between 1948 and 2011 as well, such as Aarhus University or the largest local sports club, Aarhus Gymnastikforening (AGF), which has never used the "Å" spelling. Certain geographically affiliated names have been updated to reflect the name of

12740-461: The museum, still encased in a block of surrounding peat. Glob and his team decided that they should not only research the body but they should also attempt to preserve it so that it could be exhibited to the public. This concept was new at the time as most of the bog bodies previously discovered had been re-buried, sometimes in consecrated ground , with the Tollund Man which had been discovered two years earlier having only its head preserved. Despite

12870-423: The national average. Today, te majority of the largest companies in the municipality are in the sectors of trade, transport and media. The wind power industry has strong roots in Aarhus and the larger region of Central Jutland , and nationally, most of the revenue in the industry is generated by companies in the greater Aarhus area. The wind industry employs about a thousand people within the municipality, making it

13000-531: The new treatment plants, and avoid floodings, sewage and stormwater throughout the municipality is planned to be separated into two different drainage systems. Construction began in 2017 in several areas, but it is a long process that is scheduled to be finished by 2085. Afforestation projects have been undertaken to prevent groundwater pollution , secure drinking water, sequester CO 2 , increase biodiversity , create an attractive countryside, provide easy access to nature and offer outdoor activities to

13130-440: The norm in the 17th century. With the Danish spelling reform of 1948 , "Aa" was changed to "Å". Some Danish cities resisted the change but Aarhus city council opted to change the name. In 2010, the city council voted to change the name back from Århus to Aarhus again with effect from 1 January 2011. It is still grammatically correct to write geographical names with the letter Å and local councils are allowed to use

13260-439: The north, with the stream of Egåen , Egå Engsø , the bog of Geding-Kasted Mose and Geding Lake . Most parts of the two valleys have been drained and subsequently farmed, but in the early 2000s some of the drainage was removed and parts of the wetlands were restored for environmental reasons. The valley system also includes the stream of Lyngbygård Å in the west and valleys to the south of the city, following erosion channels from

13390-447: The old methods are used. Skins typically arrived at the tannery dried stiff and dirty with soil and gore. First, the ancient tanners would soak the skins in water to clean and soften them. Then they would pound and scour the skin to remove any remaining flesh and fat . Hair was removed by soaking the skin in urine , painting it with an alkaline lime mixture, or simply allowing the skin to putrefy for several months then dipping it in

13520-405: The oldest known charter granting market town status, although similar privileges may have existed as far back as the 12th century. The charter is the first official recognition of the town as a regional power and is by some considered Aarhus's birth certificate. The commercial and religious status spurred town growth, and in 1477 the defensive earthen ramparts, which had ringed the town since

13650-472: The original State Library (1902), Aarhus University (1928) and several hospitals. On 9 April 1940, Nazi Germany invaded Denmark, occupying Aarhus the following day; the occuption lasted for five years. This was a destructive period with major disasters, loss of life and economic depression. The Port of Aarhus became a hub for supplies to the Baltics and Norway , while the surrounding rail network supplied

13780-611: The point that bacteria are unable to grow. In wet-salting, the hides are heavily salted, then pressed into packs for about 30 days. In brine -curing, the hides are agitated in a saltwater bath for about 16 hours. Curing can also be accomplished by preserving the hides and skins at very low temperatures. The steps in the production of leather between curing and tanning are collectively referred to as beamhouse operations. They include, in order, soaking, liming , removal of extraneous tissues (unhairing, scudding and fleshing), deliming , bating or puering, drenching, and pickling. In soaking,

13910-455: The port with over 38,000 passengers. In the 2010s, there was a significant expansion of tourist facilities, culminating in the opening of the 240-room Comwell Hotel in July 2014, which increased the number of hotel rooms in the city by 25%. Some estimates put the number of visitors spending at least one night as high as 750,000 a year, most of them Danes from other regions, with the remainder coming mainly from Norway, Sweden, northern Germany and

14040-603: The preservation of the man's feet and hands, his fingerprints were successfully taken. Grauballe Man was initially dated to the late 3rd century BC by analysing the stratigraphic layer of peat that his body was found in. This date was subsequently confirmed by radiocarbon dating his liver, the results of which were published in 1955, giving a date of 321–261 BC. Information about the Grauballe Man's life has been ascertained from his remains. His hands were smooth and did not show evidence of hard work, indicating that Grauballe Man

14170-508: The process. Chemicals used in tanned leather production increase the levels of chemical oxygen demand and total dissolved solids in water when not disposed of responsibly. These processes also use large quantities of water and produce large amounts of pollutants. Boiling and sun drying can oxidize and convert the various chromium(III) compounds used in tanning into carcinogenic hexavalent chromium , or chromium(VI). This hexavalent chromium runoff and scraps are then consumed by animals, in

14300-475: The public. In 2000, the first project, the New Forests of Aarhus , was completed, which aimed to double the forest cover in the municipality and, in 2009, another phase was announced to double forest cover once more before the year 2030. The afforestation plans were realised as a local project in collaboration with private landowners, under a larger national agenda. Other projects to expand natural habitats include

14430-410: The service sector overtook trade, industry and crafts as the leading sector of employment for the first time. Workers gradually began commuting to the city from most of east and central Jutland as the region became more interconnected. The student population tripled between 1965 and 1977 turning the city into a Danish centre of research and education. The growing and comparably young population initiated

14560-411: The shrinkage that the corpse suffered in the bog, the man's actual height is not known. It is known that he had dark hair, although this too was altered in the bog, and now appears in a reddish type of colour. The corpse was not found with any artefacts or any evidence of clothing, indicating that when he died he was entirely naked , or his clothing had deteriorated, something that had also happened with

14690-547: The site where Church of Our Lady stands today, but only an underground crypt remains. The growing influence of the Church during the Middle Ages gradually turned Aarhus, with its bishopric, into a prosperous religious centre. Many public and religious buildings were built in and around the town; notably Aarhus Cathedral was initiated in the late 12th century by the influential bishop Peder Vognsen , and around 1200, Aros had

14820-463: The south and Riis Skov to the north. Several lakes extend west from the inner city as the landscape merges with the larger region of Søhøjlandet with heights exceeding 152 metres (499 ft) at Himmelbjerget between Skanderborg and Silkeborg . The highest natural point in Aarhus Municipality is Jelshøj at 128 metres above sea level, in the southern district of Højbjerg . The hilltop

14950-480: The surrounding, open land. Western winds from the Atlantic and North Sea are dominant resulting in more precipitation in western Denmark. In addition, Jutland rises sufficiently in the centre to lift air to higher, colder altitudes contributing to increased precipitation in eastern Jutland. Combined, these factors make east and south Jutland comparatively wetter than other parts of the country. Average temperature over

15080-403: The tanning agent (chromium salts). Later during pickling, collagen carboxyl groups are temporarily protonated for ready transport of chromium ions. During basification step of tanning, the carboxyl groups are ionized and coordinate as ligands to the chromium(III) centers of the oxo-hydroxide clusters. Tanning increases the spacing between protein chains in collagen from 10 to 17 Å. The difference

15210-407: The touch. If alum is applied to the fur, it makes the fur dull and harsh. Depending on the finish desired, the leather may be waxed, rolled, lubricated, injected with oil, split, shaved, or dyed. The tanning process involves chemical and organic compounds that can have a detrimental effect on the environment. Agents such as chromium, vegetable tannins, and aldehydes are used in the tanning step of

15340-492: The toxicity and environmental impact of any chromium (VI) that may form during the tanning process have led to increased research into more efficient wet white methods. The conditions present in bogs, including highly acidic water, low temperature, and a lack of oxygen, combine to preserve but severely tan the skin of bog bodies . Tawing is a method that uses alum and other aluminium salts , generally in conjunction with binders such as egg yolk, flour, or other salts. The hide

15470-418: The use of pentachlorophenol and mercury -based biocides and their derivatives was forbidden. After soaking, the hides are treated with milk of lime (a basic agent) typically supplemented by "sharpening agents" (disulfide reducing agents) such as sodium sulfide , cyanides , amines , etc. This: The weakening of hair is dependent on the breakdown of the disulfide link of the amino acid cystine , which

15600-457: The valley than on the northern and southern hillsides. Because of the northern latitude, the number of daylight hours varies considerably between summer and winter. On the summer solstice, the sun rises at 04:26 and sets at 21:58, providing 17 hours 32 minutes of daylight. On the winter solstice, it rises at 08:37 and sets at 15:39 with 7 hours and 2 minutes of daylight. The difference in length of days and nights between summer and winter solstices

15730-427: The warnings of some scientists who believed that the corpse should immediately undergo preservation, it was exhibited straight away in order to capitalise on public interest. Indeed, the scientists' fears were proven right, as mould started to appear on certain areas of the body as a result of it having to be kept permanently moist. The body then underwent research, including a post-mortem , and then preservation, which

15860-413: The year 900 and later in the Viking Age the town was fortified with defensive ramparts. The bishopric of Aarhus grew steadily stronger and more prosperous, building several religious institutions in the town during the early Middle Ages . Trade continued to improve, although it was not until 1441 that Aarhus was granted market town privileges, and the population of Aarhus remained relatively stable until

15990-399: The year is 8.43 °C (47.17 °F) with February being the coldest month (0.1 °C or 32.2 °F) and August the warmest (15.9 °C or 60.6 °F). Temperatures in the sea can reach 17–22 °C (63–72 °F) in June to August, but it is not uncommon for beaches to register 25 °C (77 °F) locally. The geography in the area affects the local climate of the city with

16120-502: The year. Temperature varies a great deal across the seasons with a mild spring in April and May, warmer summer months from June to August, frequently rainy and windy autumn months in October and September and cooler winter months, often with frost and occasional snow, from December to March. The city centre experiences the same climatic effects as other larger cities with higher wind speeds, more fog, less precipitation and higher temperatures than

16250-487: Was adopted by tanners. The tanning process begins with obtaining an animal skin. When an animal skin is to be tanned, the animal is killed and skinned before the body heat leaves the tissues. This can be done by the tanner, or by obtaining a skin at a slaughterhouse, farm, or local fur trader. Before tanning, the skins are often dehaired, then have fat, meat and connective tissue removed. They are then washed and soaked in water with various compounds, and prepared to receive

16380-571: Was built by Hack Kampmann in the Art Nouveau style and completed in 1916. Musikhuset Aarhus (concert hall) and Det Jyske Musikkonservatorium (Royal Academy of Music, Aarhus/Aalborg) are also of note, as are its museums including the open-air museum Den Gamle By , the art museum ARoS Aarhus Kunstmuseum , the Moesgård Museum and the women's museum Kvindemuseet . The city's major cultural institutions include Den Gamle By, ARoS Aarhus Kunstmuseum,

16510-527: Was established in 1856 and served as Aarhus's local brewery for more than 150 years, gradually expanding into an industrial district known as Ceres-grunden (lit.: the Ceres-ground). In 1896, local farmers and businessmen created Korn- og Foderstof Kompagniet (KFK), focused on grain and feedstuffs . KFK established departments all over the country, while its headquarters remained in Aarhus where its large grain silos still stand today. Otto Mønsted created

16640-454: Was imposed in larger Danish cities which changed the layout and face of Aarhus over the following decades. Wooden city walls were erected to prevent smuggling, with gates and toll booths on the major thoroughfares, Mejlgade and Studsgade . The city gates funnelled most traffic through a few streets where merchant quarters were built. In the 17th century, Aarhus entered a period of recession as it suffered blockades and bombardments during

16770-444: Was not employed in hard labour such as farming . Study of his teeth and jaws indicated that he had suffered from "periods of starvation or a poor state of health during his early childhood." The man's skeleton showed signs of significant calcium deficiency, and his spine also suffered the early stages of spondylosis deformans , a generalized disease of ageing that is secondary to the degeneration of intervertebral disks . Due to

16900-401: Was organised by conservator C. Lange-Kornbak, who had to decide on the best way to do this, as no entire bog body had ever been preserved before. He examined various methods for doing so, before deciding on a programme of tanning the body to turn it into leather and then stuffing it with oak bark. In 1955, the body went on display at the Moesgaard Museum near Aarhus , only to be removed for

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