Search Results - (Author, Cooperation:A. M. Levin)

2013-06-01

American Association for the Advancement of Science (AAAS)

0036-8075

1095-9203

Biology

Chemistry and Pharmacology

Computer Science

Medicine

Natural Sciences in General

Physics

*Adjuvants, Immunologic ; Animals ; Antibodies, Monoclonal/*therapeutic use ; Antibodies, Monoclonal, Murine-Derived/therapeutic use ; Antibodies, Neoplasm/*therapeutic use ; Antigens, CD47/*immunology ; Antigens, Differentiation/chemistry/genetics/*therapeutic use ; Cell Line, Tumor ; Directed Molecular Evolution ; Humans ; Immunotherapy ; Macrophage Activation ; Mice ; Neoplasms/immunology/*therapy ; Phagocytosis ; Receptors, Immunologic/chemistry/genetics/*therapeutic use ; Rituximab

2012-06-02

American Association for the Advancement of Science (AAAS)

0036-8075

1095-9203

Biology

Chemistry and Pharmacology

Computer Science

Medicine

Natural Sciences in General

Physics

Acylation ; Amino Acid Sequence ; Animals ; Binding Sites ; Crystallography, X-Ray ; Cysteine/chemistry ; Fatty Acids, Monounsaturated/chemistry ; Glycosylation ; Hydrophobic and Hydrophilic Interactions ; Ligands ; Mice ; Models, Molecular ; Molecular Sequence Data ; Protein Binding ; Protein Folding ; Protein Interaction Domains and Motifs ; Protein Multimerization ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Receptors, G-Protein-Coupled/*chemistry/metabolism ; Recombinant Proteins/chemistry/metabolism ; Wnt Proteins/*chemistry/metabolism ; Wnt Signaling Pathway ; Xenopus Proteins/*chemistry/metabolism ; Xenopus laevis

2012-03-27

Nature Publishing Group (NPG)

0028-0836

1476-4687

Biology

Chemistry and Pharmacology

Medicine

Natural Sciences in General

Physics

Animals ; Binding Sites ; Cell Line ; Cell Proliferation ; Crystallography, X-Ray ; *Directed Molecular Evolution ; Humans ; Immunotherapy ; Interleukin-2/*chemistry/genetics/*immunology/pharmacology ; Interleukin-2 Receptor alpha Subunit/chemistry/deficiency/immunology/metabolism ; Interleukin-2 Receptor beta Subunit/chemistry/metabolism ; Killer Cells, Natural/immunology ; Mice ; Mice, Inbred C57BL ; Models, Molecular ; Molecular Dynamics Simulation ; Mutant Proteins/*chemistry/genetics/*immunology/pharmacology ; Mutation ; Neoplasm Transplantation ; Neoplasms/drug therapy/immunology ; Phosphorylation ; Protein Conformation ; *Protein Engineering ; STAT5 Transcription Factor/metabolism ; Surface Plasmon Resonance ; T-Lymphocytes/cytology/immunology

1432-1297

Springer Online Journal Archives 1860-2000

Mathematics

Abstract. In this paper we introduce an elliptic analog of the Bloch-Suslin complex and prove that it (essentially) computes the weight two parts of the groups K 2(E) and K 1(E) for an elliptic curve E over an arbitrary field k. Combining this with the results of Bloch and Beilinson we proved Zagier's conjecture on L(E,2) for modular elliptic curves over ℚ.

Electronic Resource

1573-8876

Springer Online Journal Archives 1860-2000

Mathematics

Abstract This paper studies an extension of classical analysis, the language of which is obtained by adding to the language of analysis a two-place predicate symbol ρ. To the axioms of this extension, in addition to all the axioms of analysis (a convolution scheme is selected for all the formulas of the new language), there also belong a series of axioms asserting that relationship ρ completely orders the class of all sets of natural numbers. It is proven that the theory described herein is a conservative extension of analysis with a scheme of dependent choice.

Electronic Resource

1573-8892

Springer Online Journal Archives 1860-2000

Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Electronic Resource

1573-8582

Springer Online Journal Archives 1860-2000

Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Electronic Resource

1573-8906

Springer Online Journal Archives 1860-2000

Electrical Engineering, Measurement and Control Technology

Conclusions The application range of the beating method and similar methods for measuring capacitances with large losses are limited by errors which are inherent in these methods and are due to the loss resistances affecting the measurement results (12). The effect of losses on the capacitance measurements is completely eliminated in measuring circuits with modulated parameters. The utilization of circuits with an external modulation serves to raise the sensitivity of capacitance measurements. The automation of these circuits makes them very promising for designing commercial instruments.

Electronic Resource

1573-8906

Springer Online Journal Archives 1860-2000

Electrical Engineering, Measurement and Control Technology

Electronic Resource

1573-871X

Springer Online Journal Archives 1860-2000

Physics

Abstract Equations are derived for determining the flow rate when a gas-saturated liquid discharges through a venturi.

Electronic Resource

1573-8892

Springer Online Journal Archives 1860-2000

Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Electronic Resource

1573-9139

Springer Online Journal Archives 1860-2000

Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Conclusions Particle size analyses of process water residues from fireclay and magnesia refractory production enable settlement rates to be established within water cleaning plant. From wet volume tests on residues it is possible to work out sludge volumes and cleaning cycle times for settlement plantl. Residues consisting of grog, magnesite, chromite, magnesite-chromite mixtures, and grog-clay mixtures with seven-tenths grog or over, should be removed mechanically from a horizontal settling tank after 1 day or longer, e.g., with a bucket crane or similar mechanism. A clay residue should be pumped out, but if it stands for 2 days or more it may be dug out. A coagulated residue of clay or a clay-grog mixture with seven tenths clay or more should be pumped out, but a 7∶3 clay-grog mixture can be removed mechanically after settling for 3 days. Coagulated grog, magnesite, or chromite residues can be moved hydraulically for the first day, but if they stand longer they must be moved mechanically. If sludge is to be moved mechanically from a settling tank the clean water over it must be removed first, and appropriate equipment must be allowed for. If a sludge is to be removed hydraulically it must first be stirred up in some way.

Electronic Resource

1573-9139

Springer Online Journal Archives 1860-2000

Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Electronic Resource

1573-9139

Springer Online Journal Archives 1860-2000

Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Conclusions The residue dehydration process depends upon the properties of the residues and the form of treatment of them. The optimum residue filtration conditions under vacuum are vacuum 0.067 MPa, length of filtration 2 min, and the use of belting fabric. The productivity of the vacuum filter is from 48.8 to 91.8 kg/(m2·h) and the moisture content of the residue is reduced from 82.3–86.5 to 59.3−58.1%.

Electronic Resource

1573-9139

Springer Online Journal Archives 1860-2000

Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Conclusions In Systems for the wet purification of air from calcined magnesite and chamotte dusts the clarified waste waters can be used repeatedly without coagulation. If the water is contaminated with clay coagulation with lime is necessary.

Electronic Resource

1573-9139

Springer Online Journal Archives 1860-2000

Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Conclusions Pressure centrifuges of diameter 25–50 mm can be used to clean process waste water contaminated with fine fireclay, magnesite, chrome-magnesite, or fireclay-clay mixtures; the centrifuges may be combined into blocks. Pressure centrifuges may be used to clean the process water used in wet air-cleaning systems to free the air from fireclay, magnesite, and clay dusts.

Electronic Resource

1573-9139

Springer Online Journal Archives 1860-2000

Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Electronic Resource

1573-9139

Springer Online Journal Archives 1860-2000

Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Conclusions The residue formed from effluent contaminated with chamotte dust, with coagulation and without coagulation, is thoroughly dewatered on vacuum equipment with concentrations of more than 700 kg/m3 of suspended particles in the residue. Residues obtained from effluent contaminated with mixtures of chamotte and clay dust in the ratio 4∶1, 1∶1, and 1∶4 are dewatered less effectively than chamotte residues. The residue from a mixture of chamotte and clay 4∶1 is dewatered with a minimum concentration of 809 kg/m3; the residue from the mixture of chamotte and clay 1∶1 can be satisfactorily dewatered only with a high vacuum (640 mm Hg) and with a filter cycle time longer than that used in existing equipment. With a filter cycle of 30 min the thickness of the skin of uncoagulated residue was 13 mm. The coagulated residue from a mixture of clay and chamotte 1∶1 even after 14 days holding had too low a concentration, and in practice cannot be dewatered on a vacuum filter. The residue from mixtures of 1∶4 chamotte and clay is dewatered very ineffectively. The thickness of the cake with a filter cycle time of 20 min for uncoagulated residue was only 4 mm.

Electronic Resource

1573-9139

Springer Online Journal Archives 1860-2000

Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Electronic Resource

1573-9139

Springer Online Journal Archives 1860-2000

Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Conclusions With vacuum filtration the following apply: For dewatering the effluent (drainage) residue the concentration of the original suspension should be not less than 700 g/liter. The suction method can be used to dewater only residues based on chamotte dust or mixtures of chamotte and clay (not more than 20%); on the drum vacuum filter even with a mixture of chamotte and clay (not more than 20%) we obtain unsatisfactory results. To dewater suspensions containing chamotte and clay dust it is possible to use vacuum-filters with a residue feed using the overflow method, but such vacuum-filters are not being made by Soviet industry. Vacuum filtration as a method of dewatering residues from drainage contaminated with chamotte and clay is not recommended. Using centrifuging: The residues of the effluents can be dewatered on centrifuges; it is best to dewater residues formed from the coagulation of drainage water than residues formed from noncoagulated drainage. Centrifuging is affected by the nature of the formation of the original material. It is necessary to continue the research into laboratory and production centrifuges.

Electronic Resource