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Genre:Естественные науки (natural_sciences)
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111-120 of 127
periodical press (Magazines)
ALTYNBEK Т. О.
Altynbek, Т. О. Natural regulators of Heteroptera - bloodsuking mosquitoes in the resorviors of the Charyn state national park [Text] / Т. О. Altynbek, P. А. Esenbekova , М. Б. Zhaksybayev // Қазақстан Республикасы Ұлттық ғылым академиясының хабарлары. Биология және медицина сериясы. - 2020. - № 3 (339). - P. 35-40. - Bibliogr.: p. 39-40 ISSN 2224-5308.
UDC:
595.754
Subject headings
- Heteroptera. Bugs
Annotation
The present article deals with the role of bioregulation as a result of the study of aquatic Heteroptera in 25 stop-flowing and slow-flowing reservoirs on the territory of Charyn State National Natural Park in the springsummer period 2019
Keywords
fauna, bug, mosquitoes, larvae, жартылай қаттықанаттылар, қансорғыш масалар, водные жестокрылые, кровососные комары
Kazakhstan
0/0 Free
periodical press (Magazines)
ZVEKOV A. A.
Zvekov, A. A. Non-linear optic properties of colloids prepared by metal targets’ laser ablation in dimethylsulfoxide [Text] / A. A. Zvekov, A. V. Kalenskii , A. V. Ivanov [et al.] // Қарағанды университетінің хабаршысы. Физика сериясы. - 2024. - № 4 (116). - P. 123-132. - Bibliogr.: p. 130-131 ISSN 2518-7198.
UDC:
535.015
Subject headings
- Optical phenomena
Annotation
The aim of the work is to study the non-linear light attenuation and accompanying effects in the model metal colloids prepared with laser ablation method
Keywords
ablation, dimethylsulfoxide, non-linear light attenuation, photoacoustic spectroscopy, laser irradiation, абляция, диметилсульфоксид
Kazakhstan
0/0 Free
periodical press (Magazines)
IBRAEV A. T.
Ibraev, A. T. Numerical investigation of the aberrational coefficients of a box shaped cathode lens [Text] / A. T. Ibraev, A. B. Sagyndyk // Қазақстан Республикасы Ұлттық ғылым академиясының хабарлары. Геология және техникалық ғылымдар сериясы. - 2017. - № 4 (424). - P. 108-114. - Bibliogr.: p. 113 ISSN 2224-5278.
UDC:
537.533.3
Subject headings
- Electronic optics
Annotation
In the present article, the numerical investigation of the aberration coefficients that determine the electron-optical characteristics of a three-electrode cathode lens is carried out
Keywords
cathode lens, electronic optics, ion, aberration, катодты линза, катодная линза
Kazakhstan
0/0 Free
periodical press (Magazines)
KURALBAYEV Z. K.
Kuralbayev, Z. K. Numerical analysis of the character of efflux of highly viscous fluids from the "narrow channel" [Text] / Z. K. Kuralbayev, A. A. Taurbekova // Қазақстан Республикасы Ұлттық ғылым академиясының хабарлары. Геология және техникалық ғылымдар сериясы. - 2017. - № 3 (423). - P. 245-255. - Bibliogr.: p. 254-255 ISSN 2224-5278.
UDC:
519.6:539.374
Subject headings
- Numerical analysis. Fluidity. Deformations of viscous liquids
Annotation
A mathematical problem of the efflux of high-viscosity fluids from the so-called "narrow channel" has been formulated on the basis of the mathematical model of the efflux of igneous materials
Keywords
igneous substance, high-viscosity fluid, quasi-linear parabolic equation, магмалық заттар, магматические вещества
Kazakhstan
0/0 Free
periodical press (Magazines)
BACHTAEV SH. A.
Bachtaev, Sh. A. New controlling methods of the ozone concentration in the atmospheric air [Text] / Sh. A. Bachtaev, A. Zh. Toigozhinova , G. K. Sydykova [et al.] // Қазақстан Республикасы Ұлттық ғылым академиясының хабарлары. Геология және техникалық ғылымдар сериясы. - 2017. - № 6 (426). - P. 273-281. - Bibliogr.: p. 280 ISSN 2224-5278.
UDC:
537.523.3
Subject headings
- Corona discharge
Annotation
Basic principles are expounded and prospects of application of homopolar corona charge on microelectrodes (microwire, needles and etc.) for development of methods and methods of control of concentration of ozone in atmospheric air
Keywords
corona charge, microelectrode, ozone, mobility of ions, balancing network, impulse mode, electronic avalanches, тəжді разряд, озон, коронный разряд
Kazakhstan
0/0 Free
periodical press (Magazines)
ASHYRALYYEV C.
Ashyralyyev, C. Numerical solution of source identification multi-point problem of parabolic partial differential equation with Neumann type boundary condition [Text] / C. Ashyralyyev, T. A. Ashyralyyeva // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 3 (115). - P. 66-76. - Bibliogr.: p. 74-76 ISSN 2518-7929.
UDC:
517.956.4
Subject headings
- Parabolic equations and systems
Annotation
Stability estimates for the solution of the overdetermined mixed BVP for multidimensional parabolic equation were established. The first and second order of accuracy difference schemes for the approximate solution of this problem were proposed
Keywords
parabolic equation, difference scheme, nonlocal condition, boundary value problem, well-posedness, stability estimates, mixed problem, inverse problem
Kazakhstan
0/0 Free
periodical press (Magazines)
FAZYLOV S. D.
Fazylov, S. D. New derivatives of 5-mercapto-3-phenyl-1,3,4-thiadiazol-2-tione. Synthesis and structure [Text] / S. D. Fazylov, O. A. Nurkenov , M. K. Ibraev [et al.] // Қазақстан Республикасы Ұлттық ғылым академиясының баяндамалары. - 2017. - № 2. - P. 39-46. - Bibliogr.: p. 46 ISSN 2224-5227.
UDC:
547.94
Subject headings
- Natural alkaloids
Annotation
The paper presents review of the past 10 years of research on preparative methods of synthesis of new derivatives of 1,3,4-thiadiazole
Keywords
5-mercapto-3-phenyl-1,3,4-thiadiazole-2-thione, S-(4-phenyl-5-thioxo-4,5-dihydro-1,3,4-thiadiazol-2-yl)prop-2enethioate, thiol, organic chemistry, органикалық химия
Kazakhstan
0/0 Free
periodical press (Magazines)
BURTEBAYEV N.
Burtebayev, N. New measurements of differential cross section for elastic scattering process of 16o(p,p)16o at astrophysical energies [Text] / N. Burtebayev, D. M. Zazulin , Zh. K. Kerimkulov [et al.] // Қазақстан Республикасы Ұлттық ғылым академиясының баяндамалары. - 2017. - № 1. - P. 5-10. - Bibliogr.: p. 9 ISSN 2224-5227.
UDC:
52
Subject headings
- Astrophysics
Annotation
The overview and analysis of existing literature experimental data on elastic scattering of protons by 16O nuclei are carried out. The experimental complex and measuring methods of the work are described in detai
Keywords
experimental set-up, UKP-2-1 accelerator, elastic scattering, differential cross sections, 16O(p,p)16O, астрофизика
Kazakhstan
0/0 Free
brochure
MARTIN, FINK
Northern Spotted Owls / Martin, Fink ... – New York : Children's press, 2002. - 47 p., ill.;– (A True Book. . . – 0-516-22164-7 : 300 tg.
UDC:
502
Shelf code:
Л 2010/28069
Subject headings
- Nature
Annotation
Describes the life cycle, characteristics, habitats, and behaviors of Northern spotted owls, as well as ways to prevent their extinction
Keywords
birds, nature, owls
1/1 Free
brochure
IRVINE, SARAH
No Animals, no Plants : species at risk / Irvine, Sarah ... – New York : Children's Press, 2008. - 36 p.– (Shockwave science. . . – 978-0-531-17766-2, 0-531-17766-1, 0-531-15496-3, 978-0-531-15496-0 : 150 tg.
UDC:
502
Shelf code:
Р 2012/5036
Subject headings
- Nature
Annotation
Nobody knows exactly how many plants and animals live on the earth. So far, scientists have counted about 260000 different species of plants
Keywords
endangered species, nature, juvenile literature, endangered plants, parks, plants in America, genetics, zoology, genes
1/1 Free
ALTYNBEK Т. О.
NATURAL REGULATORS OF HETEROPTERA - BLOODSUKING MOSQUITOES IN THE RESORVIORS OF THE CHARYN STATE NATIONAL PARK
periodical press (Magazines)
0/0 Free
ZVEKOV A. A.
NON-LINEAR OPTIC PROPERTIES OF COLLOIDS PREPARED BY METAL TARGETS’ LASER ABLATION IN DIMETHYLSULFOXIDE
periodical press (Magazines)
0/0 Free
IBRAEV A. T.
NUMERICAL INVESTIGATION OF THE ABERRATIONAL COEFFICIENTS OF A BOX SHAPED CATHODE LENS
periodical press (Magazines)
0/0 Free
KURALBAYEV Z. K.
NUMERICAL ANALYSIS OF THE CHARACTER OF EFFLUX OF HIGHLY VISCOUS FLUIDS FROM THE "NARROW CHANNEL"
periodical press (Magazines)
0/0 Free
BACHTAEV SH. A.
NEW CONTROLLING METHODS OF THE OZONE CONCENTRATION IN THE ATMOSPHERIC AIR
periodical press (Magazines)
0/0 Free
ASHYRALYYEV C.
NUMERICAL SOLUTION OF SOURCE IDENTIFICATION MULTI-POINT PROBLEM OF PARABOLIC PARTIAL DIFFERENTIAL EQUATION WITH NEUMANN TYPE BOUNDARY CONDITION
periodical press (Magazines)
0/0 Free
FAZYLOV S. D.
NEW DERIVATIVES OF 5-MERCAPTO-3-PHENYL-1,3,4-THIADIAZOL-2-TIONE. SYNTHESIS AND STRUCTURE
periodical press (Magazines)
0/0 Free
BURTEBAYEV N.
NEW MEASUREMENTS OF DIFFERENTIAL CROSS SECTION FOR ELASTIC SCATTERING PROCESS OF 16O(P,P)16O AT ASTROPHYSICAL ENERGIES
periodical press (Magazines)
0/0 Free
brochure
1/1 Free
brochure
1/1 Free