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75-421: Natural resources include forests (mostly conifers), phosphate rock, peat , furs , water and land. There are widespread deposits of peat and non-metallic minerals: limestone , marl , clay , sand and gravel , as well as the rare mineral volkonskoite. In recent decades, a minor recoverable oil reserve was revealed in the east of the region, as well as deposits of bentonite clays. The region also contains

150-538: A differ by more than 4. Phosphate can form many polymeric ions such as pyrophosphate , (P 2 O 7 ) , and triphosphate , (P 3 O 10 ) . The various metaphosphate ions (which are usually long linear polymers) have an empirical formula of (PO 3 ) and are found in many compounds. In biological systems , phosphorus can be found as free phosphate anions in solution ( inorganic phosphate ) or bound to organic molecules as various organophosphates . Inorganic phosphate

225-675: A molar mass of 94.97 g/mol, and consists of a central phosphorus atom surrounded by four oxygen atoms in a tetrahedral arrangement. It is the conjugate base of the hydrogen phosphate ion H(PO 4 ) , which in turn is the conjugate base of the dihydrogen phosphate ion H 2 (PO 4 ) , which in turn is the conjugate base of orthophosphoric acid , H 3 PO 4 . Many phosphates are soluble in water at standard temperature and pressure . The sodium, potassium, rubidium , caesium , and ammonium phosphates are all water-soluble. Most other phosphates are only slightly soluble or are insoluble in water. As

300-471: A " peak phosphorus " would occur in 30 years and Dana Cordell from Institute for Sustainable Futures said that at "current rates, reserves will be depleted in the next 50 to 100 years". Reserves refer to the amount assumed recoverable at current market prices. In 2012 the USGS estimated world reserves at 71 billion tons, while 0.19 billion tons were mined globally in 2011. Phosphorus comprises 0.1% by mass of

375-606: A 2012 survey 40.1% of the population of Kirov Oblast adheres to the Russian Orthodox Church , 5% are unaffiliated generic Christians , 1% are Orthodox Christian believers not belonging to churches or members of non-Russian Orthodox churches , 1% are adherents to Islam , 1% to the Old Believers . In addition, 33% of the population deems itself to be "spiritual but not religious", 13% is atheist , and 5.9% follows other religions or did not give an answer to

450-738: A connection with the hydronym Irtesh . The Turkic peoples associated the Itil's origin with the Kama . Thus, a left tributary to the Kama was named the Aq Itil 'White Itil' which unites with the Kara Itil 'Black Itil' at the modern city of Ufa . The name Indyl ( Indɨl ) is used in the Cherkess language. In Asia the river was known by its other Turkic name Sarı-su 'yellow water', but

525-473: A high phosphate-to-protein ratio, such as soft drinks, fast food, processed foods, condiments, and other products containing phosphate-salt additives is advised. Phosphates induce vascular calcification , and a high concentration of phosphates in blood was found to be a predictor of cardiovascular events . Phosphates are the naturally occurring form of the element phosphorus , found in many phosphate minerals . In mineralogy and geology, phosphate refers to

600-539: A length of about 160 kilometres (99 miles) and includes as many as 500 channels and smaller rivers. The largest estuary in Europe, it is the only place in Russia where pelicans , flamingos , and lotuses may be found. The Volga freezes for most of its length for three months each year. The Volga drains most of Western Russia . Its many large reservoirs provide irrigation and hydroelectric power. The Moscow Canal ,

675-1130: A molecular form that algae can break down and consume. Calcium hydroxyapatite and calcite precipitates can be found around bacteria in alluvial topsoil. As clay minerals promote biomineralization, the presence of bacteria and clay minerals resulted in calcium hydroxyapatite and calcite precipitates. Phosphate deposits can contain significant amounts of naturally occurring heavy metals. Mining operations processing phosphate rock can leave tailings piles containing elevated levels of cadmium , lead , nickel , copper , chromium , and uranium . Unless carefully managed, these waste products can leach heavy metals into groundwater or nearby estuaries. Uptake of these substances by plants and marine life can lead to concentration of toxic heavy metals in food products. Volga River 8,103.078 m /s (286,157.5 cu ft/s) 2,806.467 m /s (99,109.4 cu ft/s) Yaroslavl (Basin size: 153,657.8 km (59,327.6 sq mi): 1,008.277 m /s (35,607.0 cu ft/s) The Volga ( Russian : Волга , pronounced [ˈvoɫɡə] )

750-571: A new system of division into regions, territories, and districts (raiony). Vyatka Province was abolished, and its territory became part of Nizhny Novgorod Oblast . The city of Vyatka became a district center. On 5 December 1934, the Presidium of the All-Russian Central Executive Committee (VTsIK) passed a resolution renaming the city from Vyatka to Kirov, and Kirov Oblast was formed on 7 December. It included

825-474: A power-sharing agreement with the government of Russia, granting it autonomy. The agreement would be abolished on 24 January 2002. Kirov Oblast was formed on 7 December 1934. It is divided administratively into 39 districts, 6 cities under oblast jurisdiction, 13 town under district jurisdiction, 58 urban-type settlements, and 580 selsoviets. Kirov Oblast is part of the Volga–Vyatka economic district located in

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900-829: A rock or ore containing phosphate ions. Inorganic phosphates are mined to obtain phosphorus for use in agriculture and industry. The largest global producer and exporter of phosphates is Morocco . Within North America, the largest deposits lie in the Bone Valley region of central Florida , the Soda Springs region of southeastern Idaho , and the coast of North Carolina . Smaller deposits are located in Montana , Tennessee , Georgia , and South Carolina . The small island nation of Nauru and its neighbor Banaba Island , which used to have massive phosphate deposits of

975-450: A rule, the hydrogen and dihydrogen phosphates are slightly more soluble than the corresponding phosphates. In water solution, orthophosphoric acid and its three derived anions coexist according to the dissociation and recombination equilibria below Values are at 25   °C and 0 ionic strength. The p K a values are the pH values where the concentration of each species is equal to that of its conjugate bases . At pH 1 or lower,

1050-698: Is trimethyl phosphate , (CH 3 ) 3 PO 4 . The term also refers to the trivalent functional group OP(O-) 3 in such esters. Phosphates may contain sulfur in place of one or more oxygen atoms ( thiophosphates and organothiophosphates ). Orthophosphates are especially important among the various phosphates because of their key roles in biochemistry , biogeochemistry , and ecology , and their economic importance for agriculture and industry. The addition and removal of phosphate groups ( phosphorylation and dephosphorylation ) are key steps in cell metabolism . Orthophosphates can condense to form pyrophosphates . The phosphate ion has

1125-1340: Is generally denoted P i and at physiological ( homeostatic ) pH primarily consists of a mixture of [HPO 4 ] and [H 2 PO 4 ] ions. At a neutral pH, as in the cytosol (pH = 7.0), the concentrations of the orthophoshoric acid and its three anions have the ratios [ H 2 PO 4 − ] [ H 3 PO 4 ] ≈ 7.5 × 10 4 [ HPO 4 2 − ] [ H 2 PO 4 − ] ≈ 0.62 [ PO 4 3 − ] [ HPO 4 2 − ] ≈ 2.14 × 10 − 6 {\displaystyle {\begin{aligned}{\frac {[{\ce {H2PO4-}}]}{[{\ce {H3PO4}}]}}&\approx 7.5\times 10^{4}\\[4pt]{\frac {[{\ce {HPO4^2-}}]}{[{\ce {H2PO4-}}]}}&\approx 0.62\\[4pt]{\frac {[{\ce {PO4^3-}}]}{[{\ce {HPO4^2-}}]}}&\approx 2.14\times 10^{-6}\end{aligned}}} Thus, only [H 2 PO 4 ] and [HPO 4 ] ions are present in significant amounts in

1200-479: Is preserved in many Slavic languages, vlaga ( влага ) 'moisture', Bulgarian vlaga ( влага ) 'moisture', Czech vláha 'dampness', Serbo-Croatian : vlaga ( влага ) 'moisture', Slovene vlaga 'moisture', Polish wilgoć 'moisture' and Macedonian vlaga ( влага ) 'moisture', among others. The Scythian name for the Volga was Rahā , literally meaning 'wetness'. This

1275-461: Is related to the Avestan name for a mythical stream, Raŋhā ( 𐬭𐬀𐬢𐬵𐬁 ), which means "wet" or "moisture", and was derived from Proto-Indo-European *h₁res- or *h₁ers- ). This name can be compared to several Indo-Iranic terms, such as: The Scythian name survives in modern Moksha as Rav ( Рав ). The Greek author Herodotus recorded two more ancient Iranic names of

1350-692: Is the longest river in Europe and the longest endorheic basin river in the world. Situated in Russia , it flows through Central Russia to Southern Russia and into the Caspian Sea . The Volga has a length of 3,531 km (2,194 mi), and a catchment area of 1,360,000 km (530,000 sq mi). It is also Europe's largest river in terms of average discharge at delta – between 8,000 m /s (280,000 cu ft/s) and 8,500 m /s (300,000 cu ft/s) – and of drainage basin . It

1425-789: Is the Ob – Irtysh river system. It belongs to the closed basin of the Caspian Sea , being the longest river to flow into a closed basin. The source of the Volga lies in the village of Volgoverkhov'e in Tver Oblast . Rising in the Valdai Hills 225 meters (738 ft) above sea level northwest of Moscow and about 320 kilometers (200 mi) southeast of Saint Petersburg , the Volga heads east past Lake Sterzh , Tver , Dubna , Rybinsk , Yaroslavl , Nizhny Novgorod , and Kazan . From there it turns south, flows past Ulyanovsk , Tolyatti , Samara , Saratov and Volgograd , and discharges into

1500-524: Is the province's standing legislative (representative) body. The Legislative Assembly exercises its authority by passing laws, resolutions, and other legal acts and by supervising the implementation and observance of the laws and other legal acts passed by it. The highest executive body is the Oblast Government, which includes territorial executive bodies such as district administrations, committees, and commissions that facilitate development and run

1575-401: Is typically rare can have significant ecological consequences. For example, blooms in the populations of some organisms at the expense of others, and the collapse of populations deprived of resources such as oxygen (see eutrophication ) can occur. In the context of pollution, phosphates are one component of total dissolved solids , a major indicator of water quality, but not all phosphorus is in

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1650-488: Is widely regarded as the national river of Russia . The hypothetical old Russian state, the Rus' Khaganate , arose along the Volga c.  830 AD . Historically, the river served as an important meeting place of various Eurasian civilizations. The river flows in Russia through forests , forest steppes and steppes . Five of the ten largest cities of Russia , including the nation's capital, Moscow , are located in

1725-653: The Arab world . Khazars were replaced by Kipchaks , Kimeks and Mongols , who founded the Golden Horde in the lower reaches of the Volga. Later their empire divided into the Khanate of Kazan and Khanate of Astrakhan , both of which were conquered by the Russians in the course of the 16th century Russo-Kazan Wars . The Russian people's deep feeling for the Volga echoes in national culture and literature, starting from

1800-792: The Battle of Stalingrad , possibly the bloodiest battle in human history, in which the Soviet Union and the German forces were deadlocked in a stalemate battle for access to the river. The Volga was (and still is) a vital transport route between central Russia and the Caspian Sea, which provides access to the oil fields of the Absheron Peninsula . Hitler planned to use access to the oil fields of Azerbaijan to fuel future German conquests. Apart from that, whoever held both sides of

1875-690: The Buzan river in the Astrakhan Oblast . Buzhan ( Persian : بوژان‎ , romanized :  Būzhān ; also known as Būzān ) is also a village in Nishapur , Iran . In late 8th century the Russian state Russkiy Kaganate is recorded in different Northern and Oriental sources. The Volga was one of the main rivers of the Rus' Khaganates culture. Subsequently, the river basin played an important role in

1950-563: The Oirats also used their own name, Ijil mörön or 'adaptation river'. Presently the Mari , another Uralic group, call the river Jul ( Юл ), meaning 'way' in Tatar . Formerly, they called the river Volgydo , a borrowing from Old East Slavic . The Volga is the longest river in Europe , and its catchment area is almost entirely inside Russia , though the longest river in Russia

2025-652: The Russian invasion of Ukraine , it was attacked and set ablaze by a Ukrainian Armed Forces drone strike. This was the first attack on the region since the start of hostilities, and is deep in inland Russia, over 1000 km from the Ukrainian border. During the Soviet period, the high authority in the oblast was shared between three persons: The first secretary of the Kirov CPSU Committee (who in reality had

2100-793: The Volga–Don Canal , and the Volga–Baltic Waterway form navigable waterways connecting Moscow to the White Sea , the Baltic Sea , the Caspian Sea, the Sea of Azov and the Black Sea . High levels of chemical pollution have adversely affected the river and its habitats. The fertile river valley provides large quantities of wheat and other agricultural produce, and also has many mineral riches. A substantial petroleum industry centers on

2175-409: The arbuscular mycorrhizal pathway and the direct uptake pathway. Hyperphosphatemia , or a high blood level of phosphates, is associated with elevated mortality in the general population. The most common cause of hyperphosphatemia in people, dogs, and cats is kidney failure. In cases of hyperphosphatemia, limiting consumption of phosphate-rich foods, such as some meats and dairy items and foods with

2250-499: The dihydrogen phosphate ion [H 2 PO 4 ] while removal of two protons gives the hydrogen phosphate ion [HPO 4 ] . These names are also used for salts of those anions, such as ammonium dihydrogen phosphate and trisodium phosphate . In organic chemistry , phosphate or orthophosphate is an organophosphate , an ester of orthophosphoric acid of the form PO 4 RR′R″ where one or more hydrogen atoms are replaced by organic groups. An example

2325-462: The engineering , metalworking , and chemical industries. Kirov Oblast is part of the Volga–Vyatka agricultural zone, where more than half of the area sown in grain is located in Kirov Oblast itself. Agricultural land occupies 27% of the region's territory. The most important grain crops are winter and spring wheat and rye . Barley and oats are grown for fodder. Increased specialization in

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2400-606: The hydroxyl groups have been replaced by fluoride ions. Phosphates are medicinal salts of phosphorus. Some phosphates, which help cure many urinary tract infections , are used to make urine more acidic. To avoid the development of calcium stones in the urinary tract, some phosphates are used. For patients who are unable to get enough phosphorus in their daily diet, phosphates are used as dietary supplements, usually because of certain disorders or diseases. Injectable phosphates can only be handled by qualified health care providers. Plants take up phosphorus through several pathways:

2475-442: The phosphagens in muscle tissue. Similar reactions exist for the other nucleoside diphosphates and triphosphates . An important occurrence of phosphates in biological systems is as the structural material of bone and teeth. These structures are made of crystalline calcium phosphate in the form of hydroxyapatite . The hard dense enamel of mammalian teeth may contain fluoroapatite , a hydroxy calcium phosphate where some of

2550-467: The 12th century Lay of Igor's Campaign . The Volga Boatman's Song is one of many songs devoted to the national river of Russia. Construction of Soviet Union -era dams often involved enforced resettlement of huge numbers of people, as well as destruction of their historical heritage. For instance, the town of Mologa was flooded for the purpose of constructing the Rybinsk Reservoir (then

2625-684: The 8th centuries, the Alans settled in the Middle Volga region and in the steppes of Russia's southern region in the Pontic–Caspian steppe . The area around the Volga was inhabited by the Slavic tribes of Vyatichs and Buzhans , by Finno-Ugric , Scandinavian , Baltic , Hunnic and Turkic peoples ( Tatars , Kipchaks ) in the first millennium AD, replacing the Scythians . Furthermore,

2700-552: The Caspian Sea below Astrakhan at 28 meters (92 ft) below sea level. The Volga has many tributaries , most importantly the Kama , the Oka , the Vetluga , and the Sura . The Volga and its tributaries form the Volga river system, which flows through an area of about 1,350,000 square kilometres (521,238 square miles) in the most heavily populated part of Russia. The Volga Delta has

2775-829: The East Slavs. The Russian ethnicity in Western Russia and around the Volga river evolved to a very large extent, next to other tribes, out of the East Slavic tribe of the Buzhans and Vyatichis . The Vyatichis were originally concentrated on the Oka river. Furthermore, several localities in Russia are connected to the Slavic Buzhan tribe, like for example Sredniy Buzhan in the Orenburg Oblast , Buzan and

2850-640: The Middle East met the Varangian people of the Nordic countries through trading. In the 8th and 9th centuries colonization also began from Kievan Rus' . Slavs from Kievan Rus' brought Christianity to the upper Volga, and a portion of non-Slavic local people adopted Christianity and gradually became East Slavs . The remainder of the Mari people migrated to the east far inland. In the course of several centuries

2925-720: The Slavs assimilated the indigenous Finnic populations, such as the Merya and Meshchera peoples. The surviving peoples of Volga Finnic ethnicity include the Maris , Erzyas and Mokshas of the middle Volga. Also Khazar and Bulgar peoples inhabited the upper, middle and lower of the Volga River basin. Apart from the Huns , the earliest Turkic tribes arrived in the 7th century and assimilated some Finno-Ugric and Indo-European population on

3000-656: The Udmurt Autonomous Region, 37 districts (raiony) of Gorki Region (which had formerly been part of Vyatka Province), as well as Sapapulsky and Votkinsky districts of Sverdlovsk Region. Following the adoption of the new Constitution in 1936, Kirov Territory was transformed into Kirov Region and the Udmurt Autonomous Soviet Socialist Republic (ASSR) was separated from it. On 30 October 1997, Kirov, alongside Astrakhan , Murmansk , Ulyanovsk , and Yaroslavl , signed

3075-604: The United States) account for about 70% of world production. In ecological terms, because of its important role in biological systems, phosphate is a highly sought after resource. Once used, it is often a limiting nutrient in environments , and its availability may govern the rate of growth of organisms. This is generally true of freshwater environments, whereas nitrogen is more often the limiting nutrient in marine (seawater) environments. Addition of high levels of phosphate to environments and to micro-environments in which it

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3150-873: The Volga formed the boundary between the territories of the Cimmerians in the Caucasian Steppe and the Scythians in the Caspian Steppe. After the Scythians migrated to the west and displaced the Cimmerians, the Volga became the boundary between the territories of the Scythians in the Pontic and Caspian Steppes and the Massagetae in the Caspian and Transcaspian steppes. Between the 6th and

3225-534: The Volga valley. Other resources include natural gas , salt , and potash . The Volga Delta and the Caspian Sea are fishing grounds . A number of large hydroelectric reservoirs were constructed on the Volga during the Soviet era . They are: The Volga– Oka region has been occupied for at least 9,000 years and supported a bone and antler industry for producing bone arrowheads, spearheads, lanceheads, daggers, hunters knives, and awls. The makers also used local quartz and imported flints. During classical antiquity ,

3300-537: The Volga's drainage basin. Because the Volga drains into the Caspian Sea , which is an endorheic body of water, the Volga does not naturally connect to any of the world's oceans. Some of the largest reservoirs in the world are located along the Volga River. The river has a symbolic meaning in Russian culture – Russian literature and folklore often refer to it as Волга-матушка Volga-Matushka (Mother Volga). The Russian hydronym Volga ( Волга ) derives from Proto-Slavic * vòlga 'wetness, moisture', which

3375-417: The Volga, slightly smaller on some of the other rivers and canals) and it spans many thousands of kilometers. A number of formerly state-run, now mostly privatized, companies operate passenger and cargo vessels on the river; Volgotanker , with over 200 petroleum tankers , is one of them. In the later Soviet era , up to the modern times, grain and oil have been among the largest cargo exports transported on

3450-732: The Volga: The Turkic peoples living along the river formerly referred to it as Itil or Atil . In modern Turkic languages , the Volga is known as İdel ( Идел ) in Tatar , Atăl ( Атӑл ) in Chuvash , Iźel in Bashkir , Edıl in Kazakh , and İdil in Turkish . The Turkic names go back to the ancient Turkic form " Etil / Ertil ", the origin and meaning of which are not clear. Perhaps this form has

3525-552: The Vyatsko-Kama deposit of phosphate rock , the largest in Europe. Rich in mineral springs, the Kumyonsky District contains the resort town of Nizhneivkino . Kirov Oblast is characterized by diverse hydrography, including numerous rivers, lakes, and reservoirs which play an essential role in its geography, economy, and ecology. The hydrographic network of Kirov Oblast is dominated by the Volga River basin, one of

3600-626: The Whites eastward, from the Middle Volga at Kazan to the Kama and eventually to Ufa on the Belaya . During the Civil War, Joseph Stalin ordered the imprisonment of several military specialists on a barge in the Volga and the sinking of a floating prison in which the officers perished. During World War II, the city on the big bend of the Volga, currently known as Volgograd , witnessed

3675-400: The acid is completely dissociated as the phosphate ion, (PO 4 ) . This means that salts of the mono- and di-phosphate ions can be selectively crystallised from aqueous solution by setting the pH value to either 4.7 or 9.8. In effect, H 3 PO 4 , H 2 (PO 4 ) and H(PO 4 ) behave as separate weak acids because the successive p K

3750-519: The average phosphate rock has roughly 3.7% phosphorus by weight. Some phosphate rock deposits, such as Mulberry in Florida, are notable for their inclusion of significant quantities of radioactive uranium isotopes. This is a concern because radioactivity can be released into surface waters from application of the resulting phosphate fertilizer . In December 2012, Cominco Resources announced an updated JORC compliant resource of their Hinda project in Congo-Brazzaville of 531 million tons, making it

3825-552: The average rock (while, for perspective, its typical concentration in vegetation is 0.03% to 0.2%), and consequently there are quadrillions of tons of phosphorus in Earth's 3×10 -ton crust, albeit at predominantly lower concentration than the deposits counted as reserves, which are inventoried and cheaper to extract. If it is assumed that the phosphate minerals in phosphate rock are mainly hydroxyapatite and fluoroapatite, phosphate minerals contain roughly 18.5% phosphorus by weight. If phosphate rock contains around 20% of these minerals,

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3900-420: The best quality, have been mined excessively. Rock phosphate can also be found in Egypt, Israel, Palestine, Western Sahara, Navassa Island , Tunisia, Togo, and Jordan, countries that have large phosphate-mining industries. Phosphorite mines are primarily found in: In 2007, at the current rate of consumption, the supply of phosphorus was estimated to run out in 345 years. However, some scientists thought that

3975-428: The biggest authority), the chairman of the oblast Soviet (legislative power), and the Chairman of the oblast Executive Committee (executive power). Since 1991, CPSU lost all the power, and the head of the Oblast administration, and eventually the governor was appointed/elected alongside elected regional parliament . The Charter of Kirov Oblast is the fundamental law of the region. The Legislative Assembly of Kirov Oblast

4050-449: The central part of European Russia in the Volga and Vyatka river basins. Its economic complex had already begun forming and developing before the Revolution , in large part because of the transfer points and trading posts located in Vyatka , which later led to the formation of large . Trading Centers Agriculture was the priority sector at first, but starting in 1940, there was an upsurge in development of an industrial complex, especially

4125-404: The cytosol (62% [H 2 PO 4 ] , 38% [HPO 4 ] ). In extracellular fluid (pH = 7.4), this proportion is inverted (61% [HPO 4 ] , 39% [H 2 PO 4 ] ). Inorganic phosphate can also be present as pyrophosphate anions [P 2 O 7 ] , which give orthophosphate by hydrolysis : Organic phosphates are commonly found in

4200-637: The day to day matters of the province. The Oblast administration supports the activities of the Governor who is the highest official and acts as guarantor of the observance of the oblast Charter in accordance with the Constitution of Russia . Population : 1,153,680 ( 2021 Census ) ; 1,341,312 ( 2010 Census ) ; 1,503,529 ( 2002 Census ) ; 1,692,655 ( 1989 Soviet census ) . Vital statistics for 2022: Total fertility rate (2022): 1.50 children per woman Life expectancy (2021): Total — 69.73 years (male — 64.80, female — 74.68) Ethnic Composition (2010): According to

4275-462: The development of modern Russians. Among the first recorded people along the upper Volga were also the Finnic Mari (Мари) and Merya (Мäрӹ) people. Where the Volga flows through the steppes the area was also inhabited by the Iranian people of the Sarmatians from 200 BC. Since ancient times, even before Rus' states developed, the Volga river was an important trade route where not only Slavic, Turkic and Finnic peoples lived, but also Arab world of

4350-405: The form of esters as nucleotides (e.g. AMP , ADP , and ATP ) and in DNA and RNA . Free orthophosphate anions can be released by the hydrolysis of the phosphoanhydride bonds in ATP or ADP. These phosphorylation and dephosphorylation reactions are the immediate storage and source of energy for many metabolic processes. ATP and ADP are often referred to as high-energy phosphates , as are

4425-416: The formation of the Tatar Autonomous Soviet Socialist Republic and the Mari and Votskaya (now the Udmurt Republic ) autonomous regions. The territory did not escape the Russian Civil War and intervention of 1918–1921. Then between 1921 and 1922, it was hit by famine , followed by a typhus epidemic in late 1922. The death rate doubled during those years. The postwar period was accompanied by rebuilding of

4500-405: The lakes of the North ( Lake Ladoga , Lake Onega ), Saint Petersburg and the Baltic Sea are possible through the Volga–Baltic Waterway ; and commerce with Moscow has been realised by the Moscow Canal connecting the Volga and the Moskva River . This infrastructure has been designed for vessels of a relatively large scale (lock dimensions of 290 by 30 metres (951 ft × 98 ft) on

4575-410: The largest artificial lake in the world). The construction of the Uglich Reservoir caused the flooding of several monasteries with buildings dating from the 15th and 16th centuries. In such cases the ecological and cultural damage often outbalanced any economic advantage. During the Russian Civil War , both sides fielded warships on the Volga. In 1918, the Red Volga Flotilla participated in driving

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4650-418: The largest measured and indicated phosphate deposit in the world. Around 2018, Norway discovered phosphate deposits almost equal to those in the rest of Earth combined. In July 2022 China announced quotas on phosphate exportation. The largest importers in millions of metric tons of phosphate are Brazil 3.2, India 2.9 and the USA 1.6. The three principal phosphate producer countries (China, Morocco and

4725-604: The largest river systems in Europe, but additionally encompasses the Severodvinsk The rivers in Kirov Oblast are numerous, with more than 19,000 rivers and streams and spanning 66.7 kilometers. Some of the most significant rivers include the Vyatka , Moloma , Cheptsa , and Kama rivers. The region contains approximately 4,500 lakes, many of which are of glacial origin, with a combined water surface area of 5.5 million hectares. These lakes provide habitats for various species of fish and birds and are often used for recreational purposes. The rivers and lakes of Kirov Oblast are integral to

4800-406: The middle and lower Volga. The Turkic Christian Chuvash and Muslim Volga Tatars are descendants of the population of medieval Volga Bulgaria . Another Turkic group, the Nogais , formerly inhabited the lower Volga steppes. The Volga region is home to a German minority group, the Volga Germans . Catherine the Great had issued a manifesto in 1763 inviting all foreigners to come and populate

4875-528: The movements of peoples from Asia to Europe . A powerful polity of Volga Bulgaria once flourished where the Kama joins the Volga, while Khazaria controlled the lower stretches of the river. Such Volga cities as Atil , Saqsin , or Sarai were among the largest in the medieval world. The river served as an important trade route connecting Scandinavia , Finnic areas with the various Slavic tribes and Turkic, Germanic , Finnic and other people in Old Rus' , and Volga Bulgaria with Khazaria , Persia and

4950-402: The other side from the banks of the river. In these battles, the Soviet Union was the main offensive side, while the German troops used a more defensive stance, though much of the fighting was close quarters combat , with no clear offensive or defensive side. Many different ethnicities lived on the Volga river. Numerous were the Eastern Slavic Vyatchi tribes which took a decisive role in

5025-401: The phosphoric acid is practically undissociated. Around pH 4.7 (mid-way between the first two p K a values) the dihydrogen phosphate ion, [H 2 PO 4 ] , is practically the only species present. Around pH 9.8 (mid-way between the second and third p K a values) the monohydrogen phosphate ion, [HPO 4 ] , is the only species present. At pH 13 or higher,

5100-400: The production of more promising fodder crops like winter rye , barley , oats that are most suited to the Oblast's climatic conditions is anticipated in the future. Potatoes are also extensively cultivated. The Kirov Oblast is the site of the Rosrezerves' Zenit oil depot in Kotelnich , a large petroleum tank farm installation of the Russian State Reserve . On 28 August 2024, during

5175-451: The province on the basis of the New Economic Policy (NEP), which consisted of free trade, entrepreneurship , and private sector stimulation. The country's first office of the International Organization for Aid to Fighters of the Revolution (IOAR) began operations here in January 1923. The administrative and territorial reforms of 1929 eliminated the old division of the country into provinces and districts ( Uezd , Volost ) and introduced

5250-459: The question. Phosphate In chemistry , a phosphate is an anion , salt , functional group or ester derived from a phosphoric acid . It most commonly means orthophosphate , a derivative of orthophosphoric acid, a.k.a. phosphoric acid H 3 PO 4 . The phosphate or orthophosphate ion [PO 4 ] is derived from phosphoric acid by the removal of three protons H . Removal of one proton gives

5325-406: The region's natural environment and economy, providing water for agriculture, supporting fisheries, and transportation. In the late 19th and early 20th centuries, Vyatka remained a place of exile for opponents of the tsarist regime , including many prominent revolutionary figures. In 1920, a number of small southern and eastern districts (volosti) and villages were shifted from Vyatka as a result of

5400-634: The region, offering them numerous incentives to do so. This was partly to develop the region but also to provide a buffer zone between the Russians and the Mongols to the east. Because of conditions in German territories, Germans responded in the largest numbers. Under the Soviet Union a slice of the region was turned into the Volga German Autonomous Soviet Socialist Republic . The Volga, widened for navigation purposes with construction of huge dams during

5475-561: The river could move forces across the river, to defeat the enemy's fortifications beyond the river. By taking the river, Hitler's Germany would have been able to move supplies , guns , and men into the northern part of Russia. At the same time, Germany could permanently deny this transport route by the Soviet Union, hampering its access to oil and to supplies via the Persian Corridor . For this reason, many amphibious military assaults were brought about in an attempt to remove

5550-893: The river played a vital role in the commerce of the Byzantine people . The ancient scholar Ptolemy of Alexandria mentions the lower Volga in his Geography (Book 5, Chapter 8, 2nd Map of Asia). He calls it the Rha , which was the Scythian name for the river. Ptolemy believed the Don and the Volga shared the same upper branch, which flowed from the Hyperborean Mountains. Between 2nd and 5th centuries Baltic people were very widespread in today's European Russia. Baltic people were widespread from Sozh River till today's Moscow and covered much of today's Central Russia and intermingled with

5625-484: The years of Joseph Stalin 's industrialization , is of great importance to inland shipping and transport in Russia: all the dams in the river have been equipped with large (double) ship locks , so that vessels of considerable dimensions can travel from the Caspian Sea almost to the upstream end of the river. Connections with the river Don and the Black Sea are possible through the Volga–Don Canal . Connections with

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