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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Rozhko T., Bondareva L., Mogilnaya O., Vydryakova G., Bolsunovsky A., Stom D., Kudryasheva N.
Заглавие : Detoxification of AM-241 solutions by humic substances: Bioluminescent monitoring
Место публикации : Analytical and Bioanalytical Chemistry. - 2011. - Vol. 400, Is. 2. - С. 329-334. - ISSN 16182642 (ISSN) , DOI 10.1007/s00216-010-4442-9
Ключевые слова (''Своб.индексиров.''): detoxification--humic substances--ionizing radiation--luminous bacteria--bacterial cells--bottom sediments--humic substances--luminescent intensity--luminous bacteria--natural transformations--organic substances--photobacterium phosphoreum--physiological activity--protecting agent--water solutions--anoxic sediments--bacteriology--bioluminescence--detoxification--ionizing radiation--luminance--radiation shielding--radioactivity--bacteria--americium--radioisotope--article--bioremediation--chemistry--environmental monitoring--evaluation--humic substance--instrumentation--luminescence--metabolism--methodology--photobacterium--water pollutant--americium--biodegradation, environmental--environmental monitoring--humic substances--luminescence--photobacterium--radioisotopes--water pollutants, chemical--bacteria (microorganisms)--photobacterium phosphoreum
Аннотация: The study addresses the effect of humic substances on marine luminous bacteria Photobacterium phosphoreum exposed to Am-241 (3,000 Bq L -1, water solution). Luminescent intensity of the bacteria was applied as a marker of their physiological activity. Humic substances have been found to reduce the effect of Am-241 on luminescence, decrease damage to cells, and change distribution of Am-241 between bacterial cells and intercellular media. It was shown that water-soluble humic substances, being products of natural transformation of organic substances in soil and bottom sediments, can serve as protecting agents for water microorganisms exposed to alpha radionuclides. В© 2010 Springer-Verlag.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tikhomirov A.A., Kudenko Y.A., Degermendzhi A.G., Trifonov S.V., Sutormina E.F., Ivanova Y.A.
Заглавие : Assessment of composition and toxicity for plants of gases produced during physicochemical processing of human exometabolites as applied to biotechnical life support systems
Место публикации : Doklady Biochemistry and Biophysics. - 2011. - Vol. 441, Is. 1. - С. 252-254. - ISSN 16076729 (ISSN) , DOI 10.1134/S1607672911060032
Ключевые слова (''Своб.индексиров.''): ammonia--carbon dioxide--nitrogen oxide--oxygen--article--biomass--bioremediation--drug effect--gas--growth, development and aging--human--instrumentation--methodology--microclimate--plant--waste management--ammonia--biodegradation, environmental--biomass--carbon dioxide--ecological systems, closed--gases--humans--life support systems--nitrogen oxides--oxygen--plants--waste management
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ushakova S.A., Tikhomirov A.A.
Заглавие : Tolerance of LSS plant component to elevated temperatures
Место публикации : Acta Astronautica. - 2002. - Vol. 50, Is. 12. - С. 759-764. - ISSN 00945765 (ISSN) , DOI 10.1016/S0094-5765(02)00010-3
Ключевые слова (''Своб.индексиров.''): metabolism--photosynthesis--rate constants--thermal effects--thermoanalysis--thermal tolerance--life support systems (spacecraft)--carbon dioxide--adaptation--article--brassicaceae--comparative study--heat--instrumentation--light--metabolism--microclimate--photosynthesis--physiology--plant physiology--wheat--adaptation, physiological--brassicaceae--carbon dioxide--ecological systems, closed--heat--life support systems--light--photosynthesis--plant physiology--triticum
Аннотация: Stability of LSS based on biological regeneration of water, air and food subject to damaging factors is largely dependent on the behavior of the photosynthesizing component represented, mainly, by higher plants. The purpose of this study is to evaluate the tolerance of uneven-aged wheat and radish cenoses to temperature effects different in time and value. Estimation of thermal tolerance of plants demonstrated that exposure for 20 h to the temperature increasing to 45В°C brought about irreversible damage both in photosynthetic processes (up to 80% of initial value) and the processes of growth and development. Kinetics of visible photosynthesis during exposure to elevated temperatures can be used to evaluate critical exposure time within the range of which the damage of metabolic processes is reversible. With varying light intensity and air temperature it is possible to find a time period admissible for the plants to stay under adverse conditions without considerable damage of metabolic processes. В© 2002 Elsevier Science Ltd. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bartsev S.I., Gitelson J.I., Lisovsky G.M., Mezhevikin V.V., Okhonin V.A.
Заглавие : Perspectives of different type biological life support systems (BLSS) usage in space missions
Место публикации : Acta Astronautica. - 1996. - Vol. 39, Is. 8. - С. 617-622. - ISSN 00945765 (ISSN) , DOI 10.1016/S0094-5765(97)00012-X
Ключевые слова (''Своб.индексиров.''): article--bacterium--comparative study--construction work and architectural phenomena--environmental planning--green alga--human--instrumentation--mathematics--microclimate--moon--plant--quality of life--space flight--standard--weightlessness--algae, green--bacteria--ecological systems, closed--environment design--environment, controlled--facility design and construction--humans--life support systems--mathematics--moon--plants--quality of life--space flight--weightlessness--biology--life support systems (spacecraft)--spreadsheets--biological life support systems (blss)--lunar missions
Аннотация: In the paper an attempt is made to combine three important criteria of LSS comparison: minimum mass, maximum safety and maximum quality of life. Well-known types of BLSS were considered: with higher plant, higher plants and mushrooms, microalgae, and hydrogen-oxidizing bacteria. These BLSSs were compared in terms of "integrated" mass for the case of a vegetarian diet and a "normal" one (with animal proteins and fats). It was shown that the BLSS with higher plants and incineration of wastes becomes the best when the exploitation period is more than 1 yr. The dependence of higher plants' LSS structure on operation time was found. Comparison of BLSSs in terms of integral reliability (this criterion includes mass and quality of life criteria) for a lunar base scenario showed that BLSSs with higher plants are advantageous in reliability and comfort. This comparison was made for achieved level of technology of closing and for perspective one. В© 1997 Elsevier Science Ltd.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gitelson J.I.
Заглавие : Biological life-support systems for Mars mission
Место публикации : Advances in Space Research. - 1992. - Vol. 12, Is. 5. - С. 167-192. - ISSN 02731177 (ISSN)
Ключевые слова (''Своб.индексиров.''): air conditioning--alcaligenes--article--astronomy--biomass--chlorella--classification--comparative study--equipment design--human--instrumentation--microclimate--plant--solar energy--space flight--waste management--water management--air conditioning--alcaligenes--biomass--chlorella--ecological systems, closed--equipment design--humans--life support systems--mars--plants--solar energy--space flight--spacecraft--waste management--water purification
Аннотация: Mars mission like the Lunar base is the first venture to maintain human life beyond earth biosphere. So far, all manned space missions including the longest ones used stocked reserves and can not be considered egress from biosphere. В© 1991.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Somova L.A., Pechurkin N.S.
Заглавие : Management and control of microbial populations' development in LSS of missions of different durations
Место публикации : Advances in Space Research. - 2005. - Vol. 35, Is. 9 SPEC. ISS. - С. 1621-1625. - ISSN 02731177 (ISSN) , DOI 10.1016/j.asr.2004.12.046
Ключевые слова (''Своб.индексиров.''): long-term missions--lss--macro- and microorganism--microbial populations--ecosystems--population statistics--probability--recycling--life support systems (lss)--long-term mission--macro-and microorganism--microbial populations--microorganisms--aerospace medicine--bioreactor--bioremediation--chlorella--conference paper--drug resistance--human--hygiene--immune system--instrumentation--methodology--microbiology--microclimate--physiology--space flight--waste management--weightlessness--aerospace medicine--biodegradation, environmental--bioreactors--chlorella--drug resistance--ecological systems, closed--environmental microbiology--humans--hygiene--immune system--life support systems--space flight--waste management--weightlessness
Аннотация: The problem of interaction between man and microorganisms in closed habitats is an inextricable part of the whole problem of co-existence between macro- and microorganisms. Concerning the support of human life in closed habitat, we can, conventionally, divide microorganisms, acting in life support system (LSS) into three groups: useful, neutral and harmful. The tasks, for human beings for optimal coexistence with microhabitants seem to be trivial: (1) to increase the activity of useful forms, (2) decrease the activity harmful forms, (3) not allow the neutral forms to become the harmful ones and even to help them to gain useful activity. The task of efficient management and control of microbial population's development in LSS highly depends on mission duration. As for short-term missions without recycling, the proper hygienic procedures are developed. For longer missions, the probability of transformation of the neutral forms into the harmful ones is becoming more dangerous. The LSS for long-term missions are to use cycling-recycling systems, including system with biological recycling. In these systems, microbial populations as regenerative link should be useful and active agents. Some problems of microbial populations control and management are discussed in the paper. В© 2005 COSPAR. Published by Elsevier Ltd. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gitelson I.I., Terskov I.A., Kovrov B.G., Lisovskii G.M., Okladnikov Yu.N., Sid'ko F.Ya., Trubachev I.N., Shilenko M.P., Alekseev S.S., Pan'kova I.M., Tirranen L.S.
Заглавие : Long-term experiments on man's stay in biological life-support system
Место публикации : Advances in Space Research. - 1989. - Vol. 9, Is. 8. - С. 65-71. - ISSN 02731177 (ISSN)
Ключевые слова (''Своб.индексиров.''): agricultural products--ecosystems--food products--personnel - health--space flight - manned flight--bios-3 complex--phytotrons--spacecraft--water--air conditioning--article--biomass--crop--evaluation--growth, development and aging--human--instrumentation--light--metabolism--methodology--microclimate--photosynthesis--plant--waste management--wheat--air conditioning--biomass--crops, agricultural--ecological systems, closed--evaluation studies--humans--life support systems--light--photosynthesis--plants--triticum--waste management--water
Аннотация: We describe the experimental system having maximal possible closure of material recycling in an ecosystem, including people and plants, which was carried out in a hermetically sealed experimental complex "BIOS-3", 315 m2 in volume. The system included 2 experimentators and 3 phytotrons with plants (total sowing area of 63 m2). Plants were grown with round-the-clock lamp irradiation with 130 Wm-2 PAR intensity. The plants production was food for people. Water exchange of ecosystem, as well as gas exchange, was fully closed excluding liquids and gas samples taken for chemical analysis outside the system. The total closure of material turnover constituted 91%. Health state of the crew was estimated before, during and after the experiment. A 5-months period did not affect their health. The experiments carried out prove that the closed ecosystem of "man-plants" is a prototype of a life-support system for long-term space expeditions. В© 1989.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gitelson I.I., Terskov I.A., Kovrov B.G., Sidko F.Ya., Lisovsky G.M., Okladnikov Yu.N., Belyanin V.N., Trubachov I.N., Rerberg M.S.
Заглавие : Life support system with autonomous control employing plant photosynthesis
Место публикации : Acta Astronautica. - 1976. - Vol. 3, Is. 9-10. - С. 633-650. - ISSN 00945765 (ISSN)
Ключевые слова (''Своб.индексиров.''): biochemical engineering - photosynthesis--spacecraft--adaptation--article--chlorella--growth, development and aging--human--instrumentation--intestine--male--metabolism--microbiology--microclimate--photosynthesis--physiology--plant--space flight--task performance--vegetable--water supply--wheat--adaptation, physiological--chlorella--ecological systems, closed--environment, controlled--humans--intestines--life support systems--male--metabolism--photosynthesis--plants--space simulation--task performance and analysis--triticum--vegetables--water supply
Аннотация: This research was aimed at obtaining a closed control system. This was achieved by placing all the technological processes providing for human vital activities within the hermetically sealed space, and by transferring the entire control and guidance of these processes to people inhabiting the system. In contrast to existing biological life support systems, man has been included not only as a participant of metabolism, but as an operator who is the central figure in collecting information, making decisions and controlling all technological processes. To tackle this problem, the "BIOS-3" experimental complex was created for performing long-term experiments using different structures of biological life-support system. The experiment lasted six months and consisted of three stages. During the first stage the system was comprised of two equivalent phytotrons with the culture of wheat and an assortment of vegetable plants, and the living compartment. At the second stage, one of the phytotrons was removed while a compartment of chlorella cultivators was introduced. The third stage differed from the second, the former using wheat phytotron and the latter employing phytotron with an assortment of vegetable cultures. Three men inhabited the system simultaneously. The experiment demonstrated that a biological life support system controlled autonomously from the inside is feasible within a small confined space. However, immunological and microbiological research shows, that the medium created by the system is not fully adequate for man. In conclusion, some prospects have been outlined for further studies of biological life support systems. В© 1976.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gitelson I.I., Levin L.A.
Заглавие : Bioluminescence in oceanology.
Место публикации : Journal of bioluminescence and chemiluminescence. - 1989. - Vol. 4, Is. 1. - С. 555-562. - ISSN 08843996 (ISSN)
Ключевые слова (''Своб.индексиров.''): article--biology--circadian rhythm--ecology--gas--instrumentation--luminescence--oceanography--circadian rhythm--ecology--gases--luminescence--marine biology--oceanography
Аннотация: For analytical purposes bioluminescence can be used in three main ways: 1. luminescence measurement of bioluminescent system components isolated in vitro; 2. determination of luminous organisms' reaction to the in vivo test-action; 3. measurement of bioluminescence in marine ecological systems. The majority of the reports of this Symposium are dealing with the first two topics. The aim of our presentation is to draw attention to the third one. The possibilities of bioluminescent analysis are wider than its traditional scheme of applications in the laboratory, when the emitting system is withdrawn from a native source and is placed in a cuvette of the light measuring device. The reverse scheme is also possible, i.e. the device can be introduced into light emitting system such as a marine biocenosis--the community of the sea inhabitants--where we obtain a highly sensitive and rapid means of gaining the information on the vital activity of marine ecosystems, i.e. their spatial structure, rhythms, man's influence upon them, etc. The present communication will consider the possibilities of this form of bioluminescent analysis.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kirensky L.V., Gitelson I.I., Terskov I.A., Kovrov B.G., Lisovsky G.M., Okladnikov Y.N.
Заглавие : Theoretical and experimental decisions in the creation of an artificial ecosystem for human life support in space.
Место публикации : Life sciences and space research. - 1971. - Vol. 9. - С. 75-80. - ISSN 00759422 (ISSN)
Ключевые слова (''Своб.индексиров.''): article--bacterium--biotechnology--chlorella--energy metabolism--human--instrumentation--man machine interaction--metabolism--microclimate--space flight--weightlessness--bacteria--biotechnology--chlorella--ecological systems, closed--energy metabolism--environment, controlled--humans--life support systems--man-machine systems--space flight--weightlessness
Аннотация: All of man's former space flights were not real ventures into space in the biological sense, as his life was supported with unregenerated earth supplies. The coming stage of space exploration requires man's long existence in the cosmos and on the other planets. This stage of man's activity outside the earth become possible only by creating small man-made ecosystems, permitting the support of his metabolism by the recycling of substances of the terrestrial biosphere. Creation of such systems is a new scientific and technical task. Man-made ecosystems are a new product of man's activity, which have no complete analogy, either in nature, or in technology. Stochastic mechanisms, which stabilize biogeocenosis, cannot be effective in small ecosystems. A technique of parametric control over biosynthesis made it possible to calculate, and put to practice, an ecosystem for man with a cyclic regeneration of the atmosphere, water and, partially, food. The specific bio-technological properties of small man-made ecosystems are being analysed. The possibility of their application for man's excursions into space and for the settlement of other planets is being considered.
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11.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : PARAMONOV L.E.
Заглавие : LIGHT SCATTERING BY ENSEMBLE OF NONSPHERICAL PARTICLES INTO SOLID ANGLES
Колич.характеристики :9 с
Место публикации : PASSIVE INFRARED REMOTE SENSING OF CLOUDS AND THE ATMOSPHERE II. Ser. PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE): SPIE - INT SOC OPTICAL ENGINEERING, 1994. - Vol. 2309: Conference on Passive Infrared Remote Sensing of Clouds and the Atmosphere II (SEP 26-28, 1994, ROME, ITALY). - P349-357. - ISBN 0-8194-1639-8
Примечания : Cited References: 0
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12.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : PARAMONOV L.E.
Заглавие : ON OPTICAL EQUIVALENCE OF THE RANDOMLY ORIENTED ELLIPSOIDAL AND POLYDISPERSE SPHERICAL PARTICLES - EXTINCTION, SCATTERING AND ABSORPTION CROSS SECTIONS
Колич.характеристики :3 с
Место публикации : PASSIVE INFRARED REMOTE SENSING OF CLOUDS AND THE ATMOSPHERE II. Ser. PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE): SPIE - INT SOC OPTICAL ENGINEERING, 1994. - Vol. 2309: Conference on Passive Infrared Remote Sensing of Clouds and the Atmosphere II (SEP 26-28, 1994, ROME, ITALY). - P358-360. - ISBN 0-8194-1639-8
Примечания : Cited References: 0
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13.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Lankin J.P.
Заглавие : Adaptive simulation of atmospheric phenomena
Колич.характеристики :12 с
Место публикации : EIGHTH INTERNATIONAL SYMPOSIUM ON ATMOSPHERIC AND OCEAN OPTICS: ATMOSPHERIC PHYSICS. Ser. PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE): SPIE-INT SOC OPTICAL ENGINEERING, 2002. - Vol. 4678: 8th International Symposium on Atmospheric and Ocean Optics - Atmospheric Physics (JUN 25-29, 2001, IRKUTSK, RUSSIA). - P668-679. - ISBN 0277-786X, DOI 10.1117/12.458507. - ISBN 0-8194-4433-2
Примечания : Cited References: 46
Ключевые слова (''Своб.индексиров.''): atmosphere--system--adaptation--self-adaptation--neuroinformatics
Аннотация: The paper describes scientific methodology of developing complex nonlinear dynamic models which form the basis of a new scientific trend called Stikhioniks(1) and are a efficient tool to devise atmosphere models. The model is aimed to develop complexly organized hierarchical non-equilibrium adaptive systems with a wide range of connections and elements and is a new step as related to the now dominant mechanical-statistical paradigm.
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14.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Lankin J.P., Baskanova T.F.
Заглавие : Algorithms of self-adaptation for atmospheric model designing
Колич.характеристики :11 с
Место публикации : TENTH JOINT INTERNATIONAL SYMPOSIUM ON ATMOSPHERIC AND OCEAN OPTICS/ATMOSPHERIC PHYSICS, PT 2: LASER SENSING AND ATMOSPHERIC PHYSICS. Ser. PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE): SPIE-INT SOC OPTICAL ENGINEERING, 2004. - Vol. 5397: 10th Joint International Symposium on Atmospheric and Ocean Optics/Atmospheric Physics (JUN 24-28, 2003, Tomsk, RUSSIA). - P260-270. - ISBN 0277-786X, DOI 10.1117/12.548609. - ISBN 0-8194-5316-1
Примечания : Cited References: 23
Аннотация: The paper describes the principal limitations of the traditional methods used to construct atmospheric models. These limitations would not allow any fundamental improvement of atmospheric modeling. Ways are proposed to overcome the current limitations, based oil the methodology of constructing adaptive models and neuroinformatics. Algorithms of self-adaptation for neural networks intended for the construction of atmospheric models are given. Essentially, the developed algorithms are adaptive shells and can be easily transferred to other models.
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belousov K. I., Denisov I. A., Lukyanenko K. A., Yakimov A. S., Bukatin A. S., Kukhtevich I. V., Sorokin V. V., Esimbekova E. N., Belobrov P. I., Evstrapov A. A.
Заглавие : Dissolution and mixing of flavin mononucleotide in microfluidic chips for bioassay
Место публикации : J. Phys. Conf. Ser.: Institute of Physics Publishing, 2016. - Vol. 741, Is. 1. - ISSN 17426588 (ISSN) , DOI 10.1088/1742-6596/741/1/012058
Ключевые слова (''Своб.индексиров.''): bioassay--biomolecules--dissolution--flow of fluids--fluidic devices--microfluidics--nanostructures--optoelectronic devices--oscillating flow--photonics--analysis of liquids--concentration distributions--constant flow rates--flavin mono nucleotides (fmn)--flavin mononucleotides--frequency of oscillation--uniform distribution--variable flow rate--mixing
Аннотация: Dissolution and mixing of flavin mononucleotide (FMN), which activates a luminescent reaction, were considered in various designs of microfluidic chip for pollution analysis of liquid samples. The aim was to determine the velocity mode of fluid flow ensured the uniform distribution of the FMN in the reaction chamber. Simulation of concentration distribution of FMN in various designs of microfluidic chips was conducted. It was shown that the passive mixing techniques based on the constant flow rate didn't provide mixing of FMN in acceptable time (3 seconds). The most efficient mixing was achieved using variable flow rate with a gradually increasing frequency of oscillation. © Published under licence by IOP Publishing Ltd.
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16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Mikheev K. G., Krivenkov R. Yu., Mogileva T. N., Puzyr A. P., Bondar V. S., Bulatov D. L., Mikheev G. M.
Заглавие : Optical limiting in suspension of detonation nanodiamonds in engine oil
Место публикации : J. Nanophoton.: SPIE, 2017. - Vol. 11, Is. 3. - С. 113258162. - ISSN 19342608 (ISSN) , DOI 10.1117/1.JNP.11.032502
Ключевые слова (''Своб.индексиров.''): ambient temperature--detonation nanodiamonds--engine oil--optical limiting--optical limiting threshold--suspension--cluster analysis--detonation--engines--laser excitation--lubricating oils--nanoparticles--q switching--suspensions (fluids)--temperature--detonation nanodiamond--detonation nanodiamonds--engine oil--incident radiation--nanoparticle clusters--optical limiting--passive q-switching--wide temperature ranges--nanodiamonds
Аннотация: The optical limiting (OL) of detonation nanodiamond (DND) suspensions in engine oil was studied at a temperature range of 20°C to 100°C. Oil suspensions were prepared on the basis of the DNDs with an average nanoparticle cluster size in hydrosols (Daver) of 50 and 110 nm. Raman spectroscopy was used to characterize the samples. The OL investigation was carried out by the z-scan technique. The fundamental (1064 nm) and second (532 nm) harmonic radiations of YAG:Nd3 laser with passive Q-switching as an excitation source were used. The OL thresholds for both suspensions at 532 and 1064 nm were determined. It is shown that a decrease in the average nanoparticle cluster size as well as an increase of the wavelength of the incident radiation leads to the OL threshold increase. It is established that the OL performance is not influenced by increasing the temperature from 20°C to 100°C. The results obtained show the possibility of using the DNDs suspensions in engine oil as an optical limiter in a wide temperature range. © 2017 Society of Photo-Optical Instrumentation Engineers (SPIE).
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17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vanyukov V., Mikheev G., Mogileva T., Puzyr A., Bondar V., Lyashenko D., Chuvilin A.
Заглавие : Saturable absorption in detonation nanodiamond dispersions
Место публикации : J. Nanophoton.: SPIE, 2017. - Vol. 11, Is. 3. - ISSN 19342608 (ISSN) , DOI 10.1117/1.JNP.11.032506
Ключевые слова (''Своб.индексиров.''): modelocking--nanodiamonds--nanomaterials--nonlinear optics--saturable absorption--carbon--chains--dispersion (waves)--electromagnetic wave absorption--laser excitation--laser pulses--light--light absorption--locks (fasteners)--nanostructured materials--nonlinear optics--ultrafast lasers--ultrashort pulses--yarn--aqueous dispersions--detonation nanodiamond--light-induced--modelocking--nano-diamond particles--non-linear parameters--saturable absorption--z-scan experiment--nanodiamonds
Аннотация: We report on a saturable absorption in aqueous dispersions of nanodiamonds with femtosecond laser pulse excitation at a wavelength of 795 nm. The open aperture Z-scan experiments reveal that in a wide range of nanodiamond particle sizes and concentrations, a lightinduced increase of transmittance occurs. The transmittance increase originates from the saturation of light absorption and is associated with a light absorption at 1.5 eV by graphite and dimer chains (Pandey dimer chains). The obtained key nonlinear parameters of nanodiamond dispersions are compared with those of graphene and carbon nanotubes, which are widely used for the mode-locking. © 2017 Society of Photo-Optical Instrumentation Engineers (SPIE).
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18.

Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Belobrov P. I., Evstrapov A. A., Esimbekova E. N., Denisov I. A., Lukyanenko K. A., Osipova E. D., Yakimov A. S.
Заглавие : Towards biological quantity theory for nominal property metrology in polyenzymatic devices with living cells
Место публикации : Journal of Physics: Conference Series: Institute of Physics Publishing, 2019. - Vol. 1379: Joint IMEKO TC1-TC7-TC13-TC18 Symposium 2019 (2 July 2019 through 5 July 2019, ) Conference code: 156337, Is. 1. - Ст.012036. - , DOI 10.1088/1742-6596/1379/1/012036
Аннотация: Here we discuss the concepts of "biological quantity" and "nominal property" within the framework of the problem of biological measurements based on new specific results of biological analysis using a microfluidic platform and chips developed by our team earlier. It was shown that based on different microfluidic platforms it is possible to develop chips with a polyenzymatic bioluminescent system NAD(P)H:FMN-oxidoreductase-luciferase (Red + Luc), which can be used in various areas of biological analysis. Thus, disposable microfluidic chips with Red + Luc system suitable for field and indoor use were developed using continuous flow microfluidic platform. The use of droplet-based microfluidic platform allowed to develop microfluidic chips with Red + Luc system for long-term continuous measurements of water samples, for example, in places of waste disposal by industrial enterprises. The reference for comparing different biological quantities with each other in the proposed system was a photodetector, which converted non-numeric values and nominal properties recorded by a biological module Red + Luc into numerical variables. Such a reference was implemented as a portable luminometer based on silicon photomultiplier. The results allow to perform other biological measurements and to start the discussion of modern biological concepts in the language of biological measures. © 2019 IOP Publishing Ltd. All rights reserved.
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19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Nechipurenko Y. D., Semyonov D. A., Lavrinenko I. A., Lagutkin D. A., Generalov E. A., Zaitceva A. Y., Matveeva O. V., Yegorov Y. E.
Заглавие : The role of acidosis in the pathogenesis of severe forms of COVID-19
Место публикации : Biology: MDPI, 2021. - Vol. 10, Is. 9. - Ст.852. - ISSN 20797737 (ISSN), DOI 10.3390/biology10090852
Аннотация: COVID-19 has specific characteristics that distinguish this disease from many other infec-tions. We suggest that the pathogenesis of severe forms of COVID-19 can be associated with acidosis. This review article discusses several mechanisms potentially linking the damaging effects of COVID-19 with acidosis and shows the existence of a vicious cycle between the development of hypoxia and acidosis in COVID-19 patients. At the early stages of the disease, inflammation, difficulty in gas exchange in the lungs and thrombosis collectively contribute to the onset of acidosis. In accordance with the Verigo-Bohr effect, a decrease in blood pH leads to a decrease in oxygen saturation, which contributes to the exacerbation of acidosis and results in a deterioration of the patient’s condition. A decrease in pH can also cause conformational changes in the S-protein of the virus and thus lead to a decrease in the affinity and avidity of protective antibodies. Hypoxia and acidosis lead to dysregu-lation of the immune system and multidirectional pro-and anti-inflammatory reactions, resulting in the development of a “cytokine storm”. In this review, we highlight the potential importance of supporting normal blood pH as an approach to COVID-19 therapy. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
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