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 1-10    11-13 
1.
Инвентарный номер: нет.
   
   P 51

   
    Petrological model of formation of giant ore deposits [Text] / A. A. Marakushev, N. A. Paneyakh, V. L. Rusinov, N. N. Pertsev, I. A. Zotov // Geology of Ore Deposits. - 1998. - Vol. 40, № 3. - P211-227. - Bibliogr. : p. 227 (46 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
PETROLOGICAL MODEL -- MODELLING -- ORE -- ORE DEPOSITS
Аннотация: The available data on the giant ore deposits of chromium (Kempirsai in the Urals), platinum-group metals (Bushveld in Africa), platinum-bearing copper-nickel ores (Talnakh in the Noril'sk district, northern part of the Siberian Platform), zinc-copper (massive sulfide) ores (Gai, Sibai, and Uchaly) and apatite deposits (Khibiny, the Kola Peninsula) is summarized. The giant sizes of the deposits are caused by extraordinary ore-forming processes directly associated with the highly extensive petrogenetic processes. These processes resulted in the formation of peculiar dunites in the hyperbasite complexes (chromite ores), agpaitic urtites in alkaline associations (apatite deposits), development of low-sulfide horizons and hortonolite dunites in the basite-hyperbasite layered intrusions (platinum-group metal deposits), specific processes of transmagmatic sulfurization of the iron-rich igneous differentiates (Cu-Ni sulfide and massif sulfide ores), and processes of magmatic replacement of hyperbasites that cause the alkaline agpaitic affinity of magmatism. This agpaitic tendency increases the solubility of carbon-bearing fluid components (CO2, CH4, etc.) in magma and leads to the concentration of ore metals, which form chloride-carbonate and hydrocarbon migrating compounds in the transmagmatic fluids. Some mineralogical-petrological prospecting criteria are deduced on the basis of genetic models of giant ore deposits.

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2.
Инвентарный номер: нет.
   
   W 20

   
    Wall Rock Metasomatism and Formation Conditions of the Silver-Polymetallic Bol'shoi Kanimansur Deposit (Tadjikistan) [Text] / O. V. Rusinova, V. L. Rusinov, E. D. Syngaevskii , L. I. Bochek, M. I. Lapina, Yu. V. Vasyuta // Geology of Ore Deposits. - 2001. - Vol. 43, № 5. - P386-405. - Bibliogr. : p. 405 (20 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
SILVER-POLYMETALLIC DEPOSIT -- CARBON -- METASOMATIC TRANSFORMATIONS -- REGIONAL MAGMATISM
Аннотация: Products of the hydrothermal alteration of rocks and vertical zonality at the Kanimansur silver-polymetallic deposit (Tadjikistan) have been studied. On the basis of these studies, physicocochemical conditions of metasomatism and ore formation were reviewed. Condensed carbonaceous matter in wall rock metasomatites and ores were found and carbon isotopic composition of this carbonaceous matter and composition of gases in open pores in rocks of the deposit were analyzed. As a result of geological observations, analysis of mineral parageneses, compositions of minerals, and chemistry of wall rock alteration, the following four stages of the hydrothermal process were distinguished: autometasomatic, propylitic, preore chlorite-sericite, and synore. Mineral geothermometers were used to estimate the temperatures of metasomatism, which varied within the range 200-250°C for all stages except for the autometasomatic stage (450-500°C). The formation of unhydrated light micas, quartz, and highly ferruginuous chlorites was related to acid preore metasomatism. The stability of these chlorites testifies to a slight increase in the acidity of solutions during the preore stage (pH not less than 3.5). The wall rock metasomatites and sulfide ores are characterized by a relatively rare occurrence of pyrite due to a low activity of the sulfide sulfur during hydrothermal alterations (logaS2 = -7...-10). The low activity of the sulfide sulfur is confirmed by the fact that iron is tied in a highly ferruginuous chlorite. At upper ore levels, even zinc is tied in chlorite. This testifies to a much greater aS2 /aO2 value. Judging by the participation of carbonaceous matter in the process, ore components were deposited due to a local increase in the alkalinity at the ore-forming stage and oxidation of reduced fluids. The established features of metasomatic transformations, are related to particulars of the regional magmatism.????

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3.
Инвентарный номер: нет.
   
   T 44

   
    The Aktepe silver-arsenide deposits, Uzbekistan [Text] / V. A. Kovalenker, V. L. Rusinov, A. E. Kabo, J. L. Jambor // Exploration & Mining Geology. - 1995. - Vol. 4, № 2. - P111-119
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ARSENIDE -- GABBRO -- ORE DEPOSITION -- ORE MINERALOGY -- SILVER
Аннотация: Ores rich in native silver at the Aktepe orefield near Tashkent, Uzbekistan, are similar to the arsenide-silver ores of the Cobalt-Gowganda region, Canada. The Aktepe ores occur as shoots and lenses in narrow fissures within a middle Paleozoic gabbro massif which is surrounded by Upper Paleozoic felsic volcanics and syenite intrusions. Widespread deuteric propylitization of the massif preceded ore deposition. The ore consists mainly of native silver, which is accompanied by native arsenic and bismuth, allargentum, dyscrasite, acanthite, numerous sulfides and sulfosalts, and by a Ni-Co-Fe arsenide and sulfarsenide assemblage similar to that of Cobalt-Gowganda. The Aktepe gangue minerals are mainly calcite, ferroan dolomite, and chlorite, and the veins are bordered by a wallrock-alteration assemblage of sericite-quartz-carbonate-pyrite. A difference from Cobalt-Gowganda is that the Aktepe carbonates are iron-rich, a feature which is attributed to a genetic relationship with the iron-rich host gabbros. -Authors????

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4.
Инвентарный номер: нет.
   
   T 45

   
    Thiocarbamoyl chitosan as a novel sorbent with high sorption capacity and selectivity for the ions of gold(III), platinum(IV), and palladium [Electronic resource] / A. V. Pestov, S. Yu. Bratskaya, A. Slobodyuk, V. A. Avramenko, Yu. G. Yatluk // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2010. - Vol. 59, № 7. - P1303-1306
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
CHITOSAN -- THIOCARBAMOYL CHITOSAN -- IONS OF GOLD(III)
Аннотация: Thiocarbamoyl chitosan (TCC) was synthesized by grafting thiourea on chitosan backbone in eutectic composition of ammonium thiocyanate—thiourea. Insoluble products with the amno group functionalization degree of 0.3–1.1 can be prepared by varying the conditions of polymer-analogous (synthesis in a gel) transformation. Structure of the synthesized chitosan derivatives was characterized by elemental analysis, diffuse reflectance infrared spectroscopy, and the solid state 13C NMR. Study of sorption properties of TCC shows high sorption capacity and selectivity for the ions of gold(III), platinum(IV), and palladium(II) as evidenced by results obtained at pH 2 in the presence of 100–1000-fold excess of iron(III), copper(II), zinc(II), and nickel(II). Sorption capacity of TCC for all ions increases with the increase in the degree of substitution and changes in the series: AuIII > PdII > PtIV

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2010, 59 (7), 1303-1306.pdf
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5.
Инвентарный номер: нет.
   
   E 27

   
    Effective fluoroalkylation of aldehydes by delta-perfluoroalkyl-iron compounds [Text] / V. G. Ratner, V. B. Korolev, D. L. Chizhov, K. I. Pashkevich // Journal of Fluorine Chemistry. - 1992. - Vol. 58, № 2-3. - P355
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Organoiron compounds with ?-perfluoroalkyl-iron bonds are well-known and common compounds convenient to prepare and handle. However, their application in organic synthesis was restricted to the introduction of fluoroalkyl group only into electron rich organic molecules such as arenes and thiols

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6.
Инвентарный номер: нет.
   
   N 58

   
    Nickel(II) and iron(II) complexes with 1-(2(4)-chlorophenyl)benzothiazolylformazans [Electronic resource] / I. G. Pervova, P. A. Slepukhin, A. V. Zaidman, G. N. Lipunova, I. N. Lipunov // Russian Journal of Coordination Chemistry. - 2010. - Vol. 36, № 3. - P213-219
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Novel nickel(II) and iron(II) complexes with 1-(2(4)-chlorophenyl)benzothiazolylformazans L and L' of the general formulas ML2 and ML'(2) were obtained. According to X-ray diffraction data, the coordination polyhedron MN6 is a distorted octahedron. This geometry of the coordination polyhedron is determined by the nature of the complexing metal

\\\\Expert2\\nbo\\Russian Journal of Coordination Chemistry\\2010, v. 36, N. 3, p.213.pdf
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7.
Инвентарный номер: нет.
   
   R 30

   
    Reactivity features of polychlorobiphenyl congeners in the nucleophilic substitution reactions / T. I. Gorbunova, M. G. Pervova, V. I. Saloutin, O. N. Chupakhin // Russian Journal of General Chemistry. - 2012. - Vol. 82, № 1. - С. 138-143. - Bibliogr. : p. 143 (18 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
POLYCHLORINATED-BIPHENYLS -- IRON -- DECHLORINATION -- NANOPARTICLES -- PCBS
Аннотация: Groups of congeners and individual congeners of polychlorobiphenyls contributing to the composition of the technical mixture "Sovol" (PCB 60, PCB 64, PCB 70, PCB 74, PCB 97, PCB 101, PCB 105, PCB 110, PCB 118, PCB 138, PCB 149, PCB 156, and PCB 163) were synthesized by the reaction of aryl-aryl coupling. The interaction of the congeners with sodium methoxide was performed and their complete conversion was proved. By means of gas chromatography-mass spectrometry the PCBs methoxy derivatives were identified. The data on the reactivity of the individual polychlorobiphenyl congeners were precised

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8.
Инвентарный номер: нет.
   
   S 89

   
    Structure of substituted 2-(phenoxy)benzimidazoles [Electronic resource] / I. S Pavlova, I. G. Pervova, G. N. Lipunova, R. K. Novikova, P. A. Slepukhin, I. N. Lipunov // Crystallography Reports. - 2013. - Vol.58, №2. - С. 271-274. - Bibliogr. : p. 274 (7 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ARYL FRAGMENTS -- AZO-HYDRAZONE -- BENZIMIDAZOLES
Аннотация: The synthesis and X-ray diffraction study of 1-benzyl-2-[2-(5- ethyltetrazole-2-yl)-phenoxy]-1H-benzimidazole and 1-benzyl-2-[2-(5- ethyltetrazole-2-yl)-4-nitrophenoxy]-1H-benzimidazole single crystals have been performed. The oxidative splitting of an azo-hydrazone group of 1-(2-hydroxy-(5-nitro)phenyl)-3-ethyl-5-(benzylbenzimidazolyl)formazans, a break in the C2-N1 bond, the interaction of o-hydroxyl group of aryl fragment with oxygen, and the formation of new 2-(phenoxy)benzimidazoles are found to occur in the presence of perchlorate iron(III).

\\\\expert2\\nbo\\Crystallography Reports (Кристаллография)\\2013, v.58, N 2, p.271-274.pdf
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9.
Инвентарный номер: нет.
   
   S 98

   
    Synthesis of Fe@C nanoparticles containing sulfo groups on their surfaces and study of their aggregation behavior in aqueous media / I. A. Bakhteeva, I. V. Medvedeva, I. V. Byzov [et al.] // Russian chemical bulletin. - 2021. - Vol. 70, № 4. - P722-731
ББК Г
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
MAGNETIC NANOPARTICLES -- IRON-CARBON -- BENZENESULFONIC ACID -- IR SPECTROSCOPY
Аннотация: Magnetic iron nanoparticles (MNPs) encapsulated in a carbon shells and containing sulfo groups on the surface (Fe@C-SO3H) were synthesized. The aggregative stability of aqueous suspensions of the Fe@C-SO3H nanoparticles was studied in solutions of bovine serum albumin and calcium chloride and in phosphate-buffered saline, which simulate blood plasma. It is shown that the Fe@C-SO3H particles practically do not aggregate in the phosphate buffer saline for a long time (several days). On the contrary, MNPs encapsulated in a protein shells using ultrasonic treatment form aggregates up to 110–120 nm in size under these conditions. Suspensions of the Fe@C-SO3H particles are stable in aqueous solutions of calcium chloride in the range of the solid phase concentration between 0.05 and 0.10 g L−1. The results obtained indicate the possibility of using the functionalized Fe@C-SO3H nanoparticles in vitro experiments in biological media.

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10.
Инвентарный номер: нет.
   

   
    Variation in tumor pH affects pH-triggered delivery of peptide-modified magnetic nanoparticles / A. G. Pershina, O. Y. Brikunova, S. V. Vtorushin [et al.] // Nanomedicine: nanotechnology, biology and medicine. - 2021. - Vol. 32. - P102317
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
PH PROFILE -- ENDOCYTOSIS -- IRON OXIDE MAGNETIC NANOPARTICLES
Аннотация: Acidification of the extracellular matrix, an intrinsic characteristic of many solid tumors, is widely exploited for physiologically triggered delivery of contrast agents, drugs, and nanoparticles to tumor. However, pH of tumor microenvironment shows intra- and inter-tumor variation. Herein, we investigate the impact of this variation on pH-triggered delivery of magnetic nanoparticles (MNPs) modified with pH-(low)-insertion peptide (pHLIP). Fluorescent flow cytometry, laser confocal scanning microscopy and transmission electron microscopy data proved that pHLIP-conjugated MNPs interacted with 4T1 cells in two-dimensional culture and in spheroids more effectively at pH 6.4 than at pH 7.2, and entered the cell via clathrin-independent endocytosis. The accumulation efficiency of pHLIP-conjugated MNPs in 4T1 tumors after their intravenous injection, monitored in vivo by magnetic resonance imaging, showed variation. Analysis of the tumor pH profiles recorded with implementation of original nanoprobe pH sensor, revealed obvious correlation between pH measured in the tumor with the amount of accumulated MNPs.

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