检索结果-南通市图书馆

黑龙江大学工程学报 2014年第3期5卷 52-57页

作者： Michael v.Kaimonov sergey A.Ermakov 俄罗斯科学院西伯利亚分院北极矿业研究所山区热物理学实验室

介绍了有关进行黄金和钻石采矿生产的山脉以及土坝疏浚坑的热力过程数学模型,模型的建立为显著地降低采矿成本提供了技术解决方案,同时显著地降低了环境负荷。

关键词：数学建模永久性冻土土坝露天采矿

Some Technical Solutions for Environmental Protection System during Accidents at Nuclear Power Plants

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

World Journal of Engineering and Technology 2017年第4期5卷 1-11页

作者： sergey A. Kulyukhin Igor’ A. Rumer viktor M. Berkovich Gennadii S. Taranov Ivan v. Yagodkin viktor P. Osipov sergey S. Skvortsov Leo N. Falkovskii Frumkin’ Institute of Physical Chemistry and Electrochemistry Russian Academy of Sciences (IPCE RAS) Moscow Russia Institute “Atomenergoproekt” (AEP) Moscow Russia Institute of Physics and Power Engineering (IPPE) Obninsk Russia All-Russian Research Institute of Atomic Machine-Building (vNIIAM) Moscow Russia

The paper reports some technical solutions, which suggested or used for increasing of environmental protection during accidents at NPPs. For NNPs with two protective shells and pressure release system such as WWER-1000 a comprehensive, passive-mode environmental protection system of decontamination of the radioactive steam-air mixture from the containment and the intercontainment area was suggested. This system includes the “wet” stage (scrubbers, etc.), the “dry” stage (sorption module), and also an ejector, which in a passive mode is capable of solving the multi-purpose task of decontamination of the air-steam mixture. For WWER-440/230 NPPs three protection levels: 1) a jet-vortex condenser;2) the spray system;3) a sorption module were suggested and installed. For modern designs of new generation NPPs, which do not provide for pressure release systems, a new passive filtering system together with the passive heat-removal system, which can be used during severe accidents in case all power supply units become unavailable, was proposed and after modernization was installed at the KudanKulam NPP (India).

关键词： Nuclear Power Plants Severe Accident Environment Protection Radioactive Steam-Air Phase

AFM Height Measurements of Molecular Layers of a Carbocyanine Dye

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Nano Science and Engineering 2011年第3期1卷 67-72页

作者： valery v. Prokhorov sergey I. Pozin Dmitry A. Lypenko Olga M. Perelygina Eugene I. Mal’tsev Anatoly v. vannikov Frumkin Institute of Electrochemistry of the Russian Academy of Sciences

Atomic force microscopy (AFM) was used for the morphological characterization and precise height meas-urements of two-dimensional molecular layers of carbocyanine dye 3,3’-di(r-sulfopropyl)-4,4’,5,5’-dibenzo-9-ethylthiacarbocyanine betaine pyridinium salt. The AFM measurements reveal three morphological types of molecular aggregates: leaves, stripes and spots. The leaves are stripes have same monolayer height ~1.4 nm and different crystal shapes: the leaves are monoloyers with the lens shape and the stripes are bilay-ers with the shape of extended rectangles. The monolayer height ~1.4 nm was interpreted as indicating the symmetrical packing arrangement of dye molecules. In the symmetrical monolayer, the sulfopropyl groups of all-trans monomer units are located on both monolayer sides whereas the adjacent stacked dye molecules have a lateral slippage providing the J-aggregate optical properties. The lower height of spots ~1 nm was explained by the model of an asymmetric monolayer with sulfopropyl groups of all-trans monomers occupy-ing the same position with respect to the monolayer plane. The packing arrangement of all-trans monomers in the asymmetric monolayer corresponds to H-aggregate. The alternative models of the packing arrange-ment in monolayers with mono-cis1 monomer configuration are discussed.

关键词： Atomic Force Microscopy J-Aggregates H-Aggregates Monolayers

Water Photomolecular Evaporation Due to Light-Mediated Ortho-Para Spin Transitions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Applied Sciences 2024年第8期14卷 2201-2206页

作者： sergey Pershin Irina Bjørnø Michael Grishin Prokhorov General Physics Institute of the Russian Academy of Sciences Moscow Russia RKMD Copenhagen Denmark

Recent discoveries have revealed a groundbreaking phenomenon where light alone, without any thermal input, can induce water evaporation, termed the “photomolecular effect”. This study explores a novel hypothesis that this effect can be explained by ortho-para magnetic spin interactions in water molecules within the water-air interface layer. Water molecules, consisting of hydrogen and oxygen, exhibit different nuclear spin states: ortho-(triplet) and para-(singlet). The interaction of polarized light with these spin states may induce transitions between the rotational levels of ortho- and para-forms due to catalysts like triplet oxygen (O2) in its inhomogeneous magnetic field. Resonance pumping at 532 nm (~18,797 cm−1) due to the transition v1-v2-v3 ~ 0-8-2 (~18,796 cm−1) results in an increase in molecular energy sufficient to overcome intermolecular forces at the water surface, thereby causing evaporation. The proposed ortho-para conversion mechanism involves spin-orbit coupling and specific resonance conditions. This theory provides a quantum mechanical perspective on the photomolecular effect, potentially offering insights into natural processes such as cloud formation and climate modeling, as well as practical applications in solar desalination and industrial drying. Further experimental validation is required to confirm the role of spin interactions in light-induced water evaporation.

关键词： Ortho-Para Spin Transition Water Structure Evaporation Theory Photo Molecular Effect

Clearing of the Radioactive Liquid Waste from Oils and Oil Products by Uv-Radiation at NPPs

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Power and Energy Engineering 2015年第4期3卷 35-40页

作者： sergey A. Kulyukhin vladimir v. Kulemin vladimir B. Krapukhin viktor A. Lavrikov Andrey v. Gordeev Andrey A. Shiryaev Alexey A. Bessonov Frumkin’s Institute of Physical Chemistry and Electrochemistry Russian Academy of Sciences Moscow Russia

The basic methods of concentration and purification of liquid radioactive waste on the nuclear power plant are distillation and ionic exchange. During vaporization of oil waste products and the fulfilled washing solutions the part of oil passes into a condensate. Clearing of such condensate on ion-exchanged filters results to oiling of ion-exchanged materials and to decrease number of filter cycles. Due to the often regeneration of ion-exchanged filters additional volumes of waste products as the fulfilled reclaiming solutions, washing and loosening waters are formed. The attention of scientists was involved with methods of clearing of water environments from the organic substances, based on deep oxidizing transformations of hydrocarbons into carbonic gas and water. From processes of oxidation of hydrocarbons up to CO2 and H2O, sold at moderate conditions, our attention has involved photochemical oxidation with the help of Uv-radiation.

关键词： Nuclear Power Plant Liquid Radioactive Waste Oil Uv-Radiation

A Study of Calcifying Nanoparticles Extracted from the vorotilovskaya Well

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

材料科学与工程（中英文B版） 2012年第8期2卷 464-470页

作者： sergey v. vasile Anatoly B. Churilo Olga Y. Prikhodko Alexander S. Rudy Nina v. Shekhovtsova Anastasiya Y. Yagushkina Facilities Sharing Centre "Micro-and Nanostructures Diagnosis" Yaroslavl State University 14 Sovetskaya street Yaroslavl150000 Russia Yaroslavl Branch of Physics and Technology Institute of Russian Academy of Sciences 21 Universitetskaya street Yaroslavl150007 Russia Department of Biology Yaroslavl State University 14 Sovetskaya street Yaroslavl 150000 Russia

Polysaccharides as initiators of nucleic acid polymerization

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

American Journal of Molecular Biology 2014年第1期4卷 20-25页

作者： Aleksander N. Zimnitskii sergey A. Bashkatov Aleksey v. Chemeris Renat S. Yamidanov vadym N. Urazbaev Bashkir State University Ufa Russia Biochemistry and Genetics Institute Russian Academy of Sciences Ufa Russia Institute of Organic Chemistry Russian Academy of Sciences Ufa Russia Research and Production Association “Plazan” Moscow Russia

Quantum-chemical calculations and in vitro experiments have demonstrated that polysaccharides are able to adsorb mononucleotides due to the formation of hydrogen bonds. The subsequent dehydration of polysaccharide-nucleotide complexes in the physiologically acceptable temperature range results in the creation of “correct” DNA polymers that are “recognized” by the specific DNA-polymerases. DNA fragments abiogenically formed on polysaccharides vary in size and are characterized by a relatively “simple”, most probably, tandem structure. This research developed our previous concept of template-based polysaccharide synthesis with the participation of DNA tandem repeats (glycotranscription concept) making it possible to assume the existence of reverse glycotranscription in biological systems. Future research in the direction that we outlined experimentally may lead to a revolutionary approach in modern molecular biology—glycogenomics.

关键词： Polysaccharides Nucleic Acids Polymerization Complementarity PCR

The role of polysaccharides in the molecular evolution of biopolymers

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Natural Science 2014年第2期6卷 59-70页

作者： Aleksander N. Zimnitskii sergey A. Bashkatov vadym N. Urazbaev Aleksey v. Chemeris Renat S. Yamidanov Bashkir State University Ufa Russia Biochemistry and Genetics Institute of Russian Academy of Sciences Ufa Russia Institute of Organic Chemistry Russian Academy of Sciences Ufa Russia Research and Production Association “Plazan” Moscow Russia

The empirical (biochemical, the PCR method) and computational (quantum-chemical, PM3) methods have shown the ability of polysaccharides to catalyze the polymerization of amino acids and nucleotides within the physiologically acceptable temperature range. The possibility of nucleotide aminoacylation in the presence of polysaccharides has been established. The suggestion has been made that abiogenic aminoacylation of nucleotides by polysaccharides served as the prototype of the original aminoacylpre-tRNA-synthetase activity and subsequently determined the formation of the modern mechanism of genetic information transfer via three biopolymer types—nucleic acids, proteins and polysaccharides.

关键词： Molecular Evolution Aminoacylation Polysaccharides Amino Acids Nucleic Acids Guantum Chemistry PCR

Polymorphisms in the SNCA Gene: Association with the Risk of Development of the Sporadic Form of Parkinson’s Disease and the Level of SNCA Gene Expression in Peripheral Blood of Patients from Russia

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neuroscience & Medicine 2013年第4期4卷 208-214页

作者： Anelya Kh. Alieva Maria I. Shadrina Elena v. Filatova vera v. Ustinova Ekaterina Yu Fedotova Alexey v. Karabanov sergey N. Illarioshkin Petr A. Slominsky Institute of Molecular Genetics Russian Academy of Sciences Moscow Russia Research Centre of Neurology Russian Academy of Medical Sciences Moscow Russi Research Centre of Neurology Russian Academy of Medical Sciences Moscow Russia

Parkinson’s disease (PD) is one of the most common human neurodegenerative disorders caused by the loss of dopaminergic neurons in the brain. The α-synuclein (SNCA) gene is one of the most studied genes involved in the pathogenesis of PD. In our study, we conducted a genetic analysis of promoter and intron single-nucleotide polymorphisms (SNPs) in the SNCA gene. We also analyzed the association of genotypes of these SNPs with expression levels of SNCA mRNA. One of four SNPs in the SNCA gene, and the rs2736990 polymorphism, associates with the risk of the sporadic form of PD in Russian population. The risk of PD was increased almost twofold in carriers of allele C (odds ratios = 1.9, 95% confidence interval: 1.2-2.91, p = 0.003). However, no association was found between any of the genotypes of SNPs tested (rs2583988, rs2619363, rs2619364 and rs2736990) and alterations in SNCA levels. Our findings support the hypothesis that the rs2736990 polymorphism is associated with PD. SNPs rs2583988, rs2619363 and rs2619364 in the promoter region of the SNCA gene themselves do not significantly influence the expression of SNCA. Most likely, SNCA gene expression is a very complex process that is affected by different genetic and epigenetic factors.

关键词： Parkinson’s Disease Expression Analysis SNCA SNP

Effects of the Novel Anti-Asthenic Drug Ladasten on Behavior and T-Cell Subsets Alterations in a Social Defeat Animal Model of Depression

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Pharmacology & Pharmacy 2014年第1期5卷 4-10页

作者： Anna v. Tallerova Larisa P. Kovalenko Iosif B. Tsorin Andrey D. Durnev sergey B. Seredenin Federal State Budgetary Institution “Research Zakusov Institute of Pharmacology” under the Russian Academy of Medical Science Moscow Russia Federal State Budgetary Institution “Research Zakusov Institute of Pharmacology” under the Russian Academy of Medical Science Moscow Russia.

The aim of the present study was to investigate the effects of the anti-asthenic drug ladasten on behavioral patterns and T-cell subsets in blood, spleen, and thymus in socially stressed male C57Bl/6 mice. Mice subjected to social defeat stress (SDS) for 25 days developed a depressive-like phenotype. The submissive SDS animals were assigned to one of two treatment groups: one group was treated with ladasten (30 mg/kg, i.p.) for up to 5 days, and the other one was administered vehicle as a control. Twenty four hours after the last injection, behavioral parameters were tested, and trunk blood and tissue samples were collected. SDS mice from the vehicle-treated group showed a subordinate and passive avoidance behavior with significantly decreased spontaneous locomotor activity (SLA) and exhibited impaired parameters in the forced swimming test (FST). Changes in behavioral status were correlated with an increase spleen weight, a decrease in thymic index and a shift in the CD4/CD8 balance toward T-cytotoxic cells. The behavior parameters were reversed in the group treated with ladasten compared to the untreated SDS group and were similar to those of unstressed mice. Treatment of socially stressed mice with ladasten normalized the amount of T-lymphocyte cells in the blood, spleen, and thymus. These findings support the notion that depression is accompanied by cell-mediated immune activation and that targeting this pathway may be a new therapeutic approach for treatment. Furthermore, our data support further investigations of ladasten as a potent anti-depressive drug which can be used alone as well as in combination with other anti-depressants.

关键词： Ladasten Social Defeat Stress Depression Cytokines T-Cells