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Chiral Autoamplification Meets Dynamic Chirality Control to Suggest Nonautocatalytic Chemical Model of Prebiotic Chirality Amplification

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Research 2019年第1期2019卷 318-326页

作者： Evgenii P.Talsi Anna A.Bryliakova Roman V.Ottenbacher tatyana V.Rybalova Konstantin P.Bryliakov Novosibirsk State University Pirogova 2Novosibirsk 630090Russia Boreskov Institute of Catalysis Pr.Lavrentieva 5Novosibirsk 630090Russia Vorozhtsov Novosibirsk Institute of Organic Chemistry Pr.Lavrentieva 9Novosibirsk 630090Russia

Oxidative kinetic resolution of 1-phenylethanol in the presence of manganese complexes,bearing conformationally nonrigid achiral bis-amine-bis-pyridine ligands,in the absence of any exogenous chiral additives,is *** only driving force for the chiral discrimination is the small initial enantiomeric imbalance of the scalemic(nonracemic)substrate:the latter dynamically controls the chirality of the catalyst,serving itself as the chiral *** effect,the ee of 1-phenylethanol increases monotonously over the reaction *** dynamic control of catalyst chirality by the substrate has been unprecedented;a consistent kinetic model for this process is *** reported catalyzed substrate self-enantioenrichment mechanism is discussed in relation to the problem of prebiotic chirality amplification.

关键词： chiral Chiral catalyst

The Monsoon over the Barents Sea and Kara Sea

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Atmospheric and Climate Sciences 2020年第3期10卷 339-356页

作者： Alexander Kislov tatyana Matveeva Department of Meteorology and Climatology Lomonosov Moscow State University Moscow Russia Laboratory of Climatology Institute of Geography Russian Academy of Science Moscow Russia

In the Arctic (mainly in its European sector) there is statistically detectable seasonal reversal wind pattern. The combination of seasonally warm (cold) land surfaces in arctic areas together with cool (cool) sea surface of Arctic seas not covered by ice is conducive to the formation of a monsoon like system. On the other hand, the predominance of the cyclonic regime during all seasons makes it difficult to answer the question of whether the Arctic region belongs to the monsoon type pattern. In this study, the monsoon features of atmospheric circulation over the Barents and Kara Seas were analysed. To extract specific monsoon signs, atmospheric circulation systems (separately for areas of each sea) were divided into ten weather types. Their appearance and statistics were compared with indicators of regional circulation. A significant part of intra-annual monsoon variability is associated with the configuration of such modes as the North Atlantic Oscillation and the Scandinavia teleconnection patterns. For example, during the winter season, the monsoon currents (from land to sea) occur only with a positive North Atlantic Oscillation index. With the prevalence of other modes of variability, the direction of the winds can be different, and the regular monsoon circulation pattern is changed by chaotic regime. In summer, northern streams (from sea to land) are realized on the western periphery of cyclones, regenerating and stabilizing over the Kara Sea. As for anomalies, the nature of the monsoons is manifested in the statistics of extreme winds even without selecting data on the regimes of variability. So, in winter, maximum speeds fall on the southern streams, and in the summer—on the northern ones. Large precipitation anomalies during all seasons, as one would expect, are encountered most often with the cyclonic type of circulation.

关键词： Monsoon The North Atlantic Oscillation The Scandinavia Teleconnection Pattern Barents Sea Kara Seas

An Extreme Value Analysis of Wind Speed over the European and Siberian Parts of Arctic Region

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Atmospheric and Climate Sciences 2016年第2期6卷 205-223页

作者： Alexander Kislov tatyana Matveeva Department of Meteorology and Climatology Lomonosov Moscow State University Moscow Russia

Multiyear observed time series of wind speed for selected points of the Arctic region (data of station network from the Kola Peninsula to the Chukotka Peninsula) are used to highlight the important peculiarities of wind speed extreme statistics. How largest extremes could be simulated by climate model (the INM-CM4 model data from the Historical experiment of the CMIP5) is also discussed. Extreme value analysis yielded that a volume of observed samples of wind speeds are strictly divided into two sets of variables. Statistical properties of one population are sharply different from another. Because the common statistical conditions are the sign of identity of extreme events we therefore hypothesize that two groups of extreme wind events adhere to different circulation processes. A very important message is that the procedure of selection can be realized easily based on analysis of the cumulative distribution function. The authors estimate the properties of the modelled extremes and conclude that they consist of only the samples, adhering to one group. This evidence provides a clue that atmospheric model with a coarse spatial resolution does not simulate special mechanism responsible for appearance of largest wind speed extremes. Therefore, the tasks where extreme wind is needed cannot be explicitly solved using the output of climate model. The finding that global models are unable to capture the wind extremes is already well known, but information that they are members of group with the specific statistical conditions provides new knowledge. Generally, the implemented analytical approach allows us to detect that the extreme wind speed events adhere to different statistical models. Events located above the threshold value are much more pronounced than representatives of another group (located below the threshold value) predicted by the extrapolation of law distributions in their tail. The same situation is found in different areas of science where the data referring t

关键词： Extreme Wind Speed Analysis Arctic Circulation Modelled Extreme Wind Speed

Extreme Values of Wind Speed over the Kara Sea Based on the ERA5 Dataset

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Atmospheric and Climate Sciences 2021年第1期11卷 98-113页

作者： Alexander Kislov tatyana Matveeva Department of Meteorology and Climatology Faculty of Geography Lomonosov Moscow State University Moscow Russia Laboratory of Climate Institute of Geography Russian Academy of Sciences Moscow Russia

Extreme values of wind speed were studied based on the highly detailed ERA5 dataset covering the central part of the Kara Sea. Cases in which the ice coverage of the cells exceeded 15% were filtered. Our study shows that the wind speed extrema obtained from station observations, as well as from modelling results in the framework of mesoscale models, can be divided into two groups according to their probability distribution laws. One group is specifically designated as black swans, with the other referred to as dragons (or dragon-kings). In this study we determined that the data of ERA5 accurately described the swans, but did not fully reproduce extrema related to the dragons;these extrema were identified only in half of ERA5 grid points. Weibull probability distribution function (PDF) parameters were identified in only a quarter of the pixels. The parameters were connected almost deterministically. This converted the Weibull function into a one-parameter dependence. It was not clear whether this uniqueness was a consequence of the features of the calculation algorithm used in ERA5, or whether it was a consequence of a relatively small area being considered, which had the same wind regime. Extremes of wind speed arise as mesoscale features and are associated with hydrodynamic features of the wind flow. If the flow was non-geostrophic and if its trajectory had a substantial curvature, then the extreme velocities were distributed according to a rule similar to the Weibull law.

关键词： ERA5 Kara Sea Weibull Probability Distribution Function Wind Speed Hydrodynamics and Statistics of Extreme Events

Urban air pollution,climate and its impact on asthma morbidity

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Asian Pacific Journal of Tropical Biomedicine 2016年第1期6卷 76-79页

作者： Lyudmila Vasilievna Veremchuk Vera Innokentievna Yankova tatyana Isaakovna Vitkina Anna Vladimirovna Nazarenko Kirill Sergeevich Golokhvast Vladivostok Branch of Far Eastern Scientific Center of Physiology and Pathology of Respiration Research Institute of Medical Climatology and Rehabilitation Treatment Scientific Educational Center of Nanotechnology Far Eastern Federal University

Objective:To study the mechanism of formation of air quality and to determine the impact of the studied factors on asthma morbidity in ***:The evaluation of air pollution in Vladivostok was done using long-term(2008-2012) monitoring data(temperature,humidity,atmospheric pressure,wind speed,etc.).The levels of suspended particulate matter,nitrogen and sulfur dioxide,carbon monoxide,ammonia,formaldehyde(mg/m^3) in six stationary observation posts were *** studied the aerosol suspensions of solid particles,which were collected during snowfall from precipitation(snow) and air in 14 districts with different levels of anthropogenic *** snow was analyzed on laser *** impact of air pollution on the distribution of asthma morbidity was evaluated in various age groups by data of federal statistical observation obtained from 8 adults and 7 children municipal clinics in Vladivostok(2008-2012).Results:The content of suspended particulate components of pollution remained more stable,due to the features of atmospheric circulation,rugged terrain and residential *** nano- and micro-sized particles(0-50 μm),which can absorb highly toxic metals,prevail in dust *** respirable fractions of particles,even in small doses,can contribute to the increase in asthma morbidity in the ***:We determined that asthma morbidity depends from general air pollution(in the range of 18.3%).It was detected that the highest age-specific dependence is associated with the content of particulate matter,carbon monoxide and nitrogen dioxide in air.

关键词： Air quality assessment Climatic factors Air pollution Atmospheric microparticles Asthma morbidity

Defatted black soldier fly (Hermetia illucens) in pikeperch (Sander lucioperca) diets: Effects on growth performance, nutrient digestibility, fillet quality, economic and environmental sustainability

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Animal Nutrition 2023年第1期12卷 7-19页

作者： Vlastimil Stejskal Hung Quang Tran Markéta Prokesová Mahyar Zare tatyana Gebauer Tomas Policar Christian Caimi Francesco Gai Laura Gasco University of South Bohemia in Ceske Budejovice Faculty of Fisheries and Protection of WatersSouth Bohemian Research Center of Aquaculture and Biodiversity of HydrocenosesHusova tr.458/10237005 CeskéBudějoviceCzech Republic University of Torino Department of AgriculturalForest and Food SciencesLargo P.Braccini 210095 GrugliascoItaly National Research Council Institute of Sciences of Food ProductionLargo P.Braccini 210095 GrugliascoItaly

The use of insect meal in aquafeed formulations has recently gained *** knowledge about the inclusion levels for pikeperch(Sander lucioperca),a promising candidate for intensive aquaculture in Europe remains,however,*** the present study,4 isoproteic(45%dry matter)and isoenergetic(21 MJ/kg)diets were formulated,including a control diet(H0)containing 30%fishmeal(FM)on an as-fed basis and the other 3 diets in which FM protein was replaced by defatted black soldier fly(Hemetia illucens)meal(HIM)at 25%,50%,and 100%(diet abbreviation H9,H18 and H36,corresponding to an inclusion level of 9%,18%and 36%,respectively).The feeding trial was performed in triplicate groups of 50 juvenile pikeperch(mean weight,68.7 g)fed with experimental diets for 84 d during which the growth performance,nutrient digestibility,fillet quality and economic and environmental sustainability of rearing pikeperch were *** findings indicated that pikeperch in H0,H9,and H18 groups displayed better results regarding growth performance indices,except for survival rate where no significant difference among groups was recorded(P?0.642).A significantly lower organ-somatic index,including hepatosomatic,viscerosomatic and perivisceral fat index,was found in fish in H18 groups than other groups(P0.05)but did reduce total n-3 fatty acids(P?0.001)and increased total n-6(P<0.001).Increasing inclusion levels of HIM reduced the environmental impacts associated with fish in-to-fish out ratio but entailed heavy burdens on e

关键词： Alternative feed Digestibility Fish in-to-fish out ratio Insect meal Percids Sustainability

Cherenkov radiation from electrons passing through human tissue

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Journal of Innovative Optical Health Sciences 2017年第1期10卷 94-98页

作者： Pavel Lukin Izmail Batkin Alexandr N.Almaliev tatyana A.Churakova Mikhail A.Dolgopolov Igor V.Kopytin Department of Physics Voronezh State University 1 Universitetskaya Sq.Voronezh 394000Russia School of Electrical Engineering and Computer Science University of Ottawa 800 King Edward A venue OttawaON CanadaK1N 6N5

A method for investigating the optical properties of human tissues is *** method is based on the measurement of Cherenkov radiation produced by relativistic electrons passing through the ***-Carlo simulation of visible photon emission and propagation is carried out taking into account multiple electron and photon scattering *** of the Cherenkov radiation to the optical characteristics of human tissues is demonstrated.

关键词： Coherent radiation human tissue optics multiple scattering.

Old English Wlite: Lost Soundness of Medieval Contemplation

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大学英语(学术版) 2006年第1期 70-73页

作者： tatyana Solomonik-Pankrashova 立陶宛维尔纽斯大学考那斯人文学院

On Some Regularities of One-seeded Fruits Evolution

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Journal of Life Sciences 2015年第11期9卷 511-520页

作者： tatyana I. Kravtsova Komarov Botanical Institute RAS Saint Petersburg 197376 Russia

Anatomical structure of differently originated seed envelopes in one-seeded indehiscent fruits of Urticaceae and Asteraceae members is studied using light and scanning electron microscopes. It was found that in anthocarps and involucrate fruits of both families the relations between the primary （pericarp） and secondary fruit envelopes （perianth and/or involucre） were composed under complexification （union） type, and not as substitution. Numerous examples of non-homologous resemblance in fruit envelope structure indicate a high degree of adaptability of certain histological types, recurring on a different morphological basis in different phyletic lines within a family. These tissue complexes represent widely occurring types of the pericarp （Utricaceae） or pericarp and seed coat tissue union （Asteraceae）. This evolutionary repetition or pseudocyclic resemblance is apparently another common regularity of one-seeded indehiscent fruits evolution in addition to those enumerated in general by Zohary （1950）.

关键词： Asteraceae Corymbium Urticaceae accessory envelope fruit non-homologous resemblance.