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The identification of individuals with hatchery and natural origin in a mixed sample of Amur River chum salmon by Otolith microchemistry

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Aquaculture and Fisheries 2023年第3期8卷 341-350页

作者： pavel B.Mikheev Denis v.Kotsyuk Elena v.Podorozhnyuk vsesolod N.Koshelev Atbkyh I.Nikiforov Tatiana A.Sheina Alexey Yu.Puzik Mikhail A.Baklanov Khabarovsk Branch of the Federal State Budget Scientific Institution“Russian Federal Research Institute of Fisheries and Oceanography”(“KhabarovskNIRO”) Khabarovsk680038Russia Federal State Budget Educational Institution of Higher Education“Perm State National Research University”(PGNIU) Perm614990Russia Moscow State Institute(University)of International Relations Ministry of Foreign Affairs of the Russian FederationMoscow117454Russia

We estimated the proportion of hatchery and natural fall spawning chum salmon returning to the Amur River using chemical markers specific to hatchery-origin *** used otolith microchemistry technique to identify fish with artificial origin among returning ***,we found that juveniles of artificial origin had higher values of the Sr:Ca molar ratio of the otoliths’edge zone compared with juveniles of natural origin,what can be related to the use of rearing feed produced from raw materials of marine origin rich in *** we observed that most of the spawners from Anyuisky Hatchery and from the Amur River mouth at the start of the spawning migration has also the higher value of Sr:Ca molar ratio of the juvenile zone of ***,adults with higher values of the Sr:Ca molar ratio are characterized by a skewed right in the peak of the age ***,the age structure and phenological shift in the time of spawning migration of individuals with higher value of the used chemical marker corresponds to results of studies on hatchery-produced chum salmon completed at different parts on Northern *** results of this study will be used in the management of Amur fall chum salmon fisheries,and also demonstrates the necessity of the development of specific measures for increasing the survival of juvenile anadromous salmonids released at large rivers and exposed to prolonged freshwater migration to the *** a further application of the methodology,we plan to identify the markers specific to each of the hatcheries and main spawning tributaries belonging to Amur River *** will be an important step in the evaluation of the contribution of different stocks in mixed fisheries and also in the estimation of the effect of hatchery releases on naturally spawning stocks of Amur fall *** to,our results may indicate the applicability of this approach for the determination of artificial-origin fish in a mixed sample of the Amur fall

关键词： Otolith microchemistry LA ICP-MS Chum salmon Identification of origin in a mixed sample Hatchery releases

Influence of stress path change on the resistance to plastic deformation of cold rolled sheets

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Journal of University of Science and Technology Beijing 2005年第6期12卷 521-526页

作者： pavel Huml Metal Forming Department of Materials Science and Engineering The Royal Institute of Technology 10044 Stockholm Sweden

Flat workpieces have been tested in order to investigate the influence of stress path change （loading mode） while keeping strain path unchanged. These investigations are pertinent to the testing of cold rolled strips and to subsequent forming. The workpieces which first compressed by plane strain compression in thickness direction were then tested in perpendicular direction in order to measure the influence of strain and stress path. The tension workpieces came from flat die compression test at different deformation histories. Two different materials were investigated： 18/8 Ti stainless steel and AW-1050 aluminium. The results show that the plastic flow by tension in lengthwise direction after pre-strain by compression in thickness direction will begin at an appreciably lower stress than that of the workpieces unloaded after pre-compression. Comparing with two materials, it can be seen that both 18/8 Ti stainless steel and AW-1050 aluminium behave similarly. The drop in yield stress is lower for AW-1050 aluminium than that for 18/8 Ti stainless steel. However, reloading in different directions than in the precious step results in significantly higher strain hardening.

关键词： cold working plastic deformation strain path stress path loading mode flow stress yield stress strain hardening

MLA:A New Mutated Leader Algorithm for Solving Optimization Problems

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Computers, Materials & Continua 2022年第3期70卷 5631-5649页

作者： Fatemeh Ahmadi Zeidabadi Sajjad Amiri Doumari Mohammad Dehghani Zeinab Montazeri pavel Trojovsky Gaurav Dhiman Department of Mathematics and Computer Sciences Sirjan University of TechnologySirjanIran Graduate of Department of Electrical and Electronics Engineering Shiraz University of TechnologyShirazIran Department of Electrical and Electronics Engineering Shiraz University of TechnologyShirazIran Department of Mathematics Faculty of ScienceUniversity of Hradec Králové50003Hradec KrálovéCzech Republic Department of Computer Science Government Bikram College of CommercePatialaPunjabIndia

Optimization plays an effective role in various disciplines of science and *** problems should either be optimized using the appropriate method(i.e.,minimization or maximization).Optimization algorithms are one of the efficient and effective methods in providing quasioptimal solutions for these type of *** this study,a new algorithm called the Mutated Leader Algorithm(MLA)is *** main idea in the proposed MLA is to update the members of the algorithm population in the search space based on the guidance of a mutated *** addition to information about the best member of the population,themutated leader also contains information about the worst member of the population,as well as other normal members of the *** proposed MLA is mathematically modeled for implementation on optimization problems.A standard set consisting of twenty-three objective functions of different types of unimodal,fixed-dimensional multimodal,and high-dimensional multimodal is used to evaluate the ability of the proposed algorithm in ***,the results obtained from theMLA are compared with eight well-known *** results of optimization of objective functions show that the proposed MLA has a high ability to solve various optimization ***,the analysis and comparison of the performance of the proposed MLA against the eight compared algorithms indicates the superiority of the proposed algorithm and ability to provide more suitable quasi-optimal solutions.

关键词： Optimization metaheuristics leader benchmark objective function

AMBO:All Members-Based Optimizer for Solving Optimization Problems

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Computers, Materials & Continua 2022年第2期70卷 2905-2921页

作者： Fatemeh Ahmadi Zeidabadi Sajjad Amiri Doumari Mohammad Dehghani Zeinab Montazeri pavel Trojovsky Gaurav Dhiman Department of Mathematics and Computer Sciences Sirjan University of TechnologySirjanIran Department of Electrical and Electronics Engineering Shiraz University of TechnologyShirazIran Department of Mathematics Faculty of ScienceUniversity of Hradec KrálovéHradec Králové50003Czech Republic Department of Computer Science Government Bikram College of CommercePatialaPunjabIndia

There are many optimization problems in different branches of science that should be solved using an appropriate *** optimization algorithms are one of the most efficient approaches to solve this type of *** this paper,a new optimization algorithm called All Members-Based Optimizer(AMBO)is introduced to solve various optimization *** main idea in designing the proposedAMBOalgorithm is to use more information from the population members of the algorithm instead of just a few specific members(such as best member and worst member)to update the population ***,in AMBO,any member of the population can play a role in updating the population *** theory of AMBO is described and then mathematically modeled for implementation on optimization *** performance of the proposed algorithm is evaluated on a set of twenty-three standard objective functions,which belong to three different categories:unimodal,high-dimensional multimodal,and fixed-dimensional multimodal *** order to analyze and compare the optimization results for the mentioned objective functions obtained by AMBO,eight other well-known algorithms have been also *** optimization results demonstrate the ability of AMBO to solve various optimization ***,comparison and analysis of the results show that AMBO is superior andmore competitive than the other mentioned algorithms in providing suitable solution.

关键词： Algorithm all members optimization optimization algorithm optimization problem population-based algorithm

Influence of Particle Size Distribution on the Optical Properties of Fine-Dispersed Suspensions

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Fluid Dynamics & Materials Processing 2022年第1期18卷 1-14页

作者： Dmitrii Kuzmenkov pavel Struchalin Yulia Litvintsova Maksim Delov vladimir Skrytnyy Kirill Kutsenko National Research Nuclear University MEPhI(Moscow Engineering Physics Institute) Moscow115409Russian Federation Western Norway University of Applied Sciences Bergen5063Norway

Nanofluids have great potential for solar energy harvesting due to their suitable optical and thermophysical *** of the promising applications of nanofluids is utilization in solar collectors with the direct absorption of light(DASC).The design of a DASC requires detailed knowledge of the optical properties of nanofluids,which can be significantly affected by the particle size *** paper presents the method to take into account the particle size distribution when calculating nanofluid extinction *** validate the proposed model,the particle size distribution and spectral absorbance were measured for aqueous suspension with multi-walled graphite nanotubes;the minimum size of primary nanoparticles was 49 *** proposed model is compared with experiments demonstrating the concentration averaged and maximum discrepancies of 6.6%and 32.2%against 12.6%and 77.7%for a model assuming a monosized suspension.

关键词： Nanoparticles multi-walled carbon nanotubes fine-dispersed suspension optical properties

The influence of composition of asphaltenes of different genesis on the properties of carbon materials manufactured from them by plasma processing

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Petroleum Science 2023年第6期20卷 3830-3840页

作者： Evgeniya Frantsina Yuliya Petrova valentina Arkachenkova Andrey Grin'ko Alexander Pak pavel Povalyaev Dmitry Zelentsov Kirill Cherednichenko Surgut State University Institute of Natural and Technical Sciencespr.Lenina 1628412SurgutRussian Federation Tomsk Polytechnic University Laboratory of Advanced Materials for the Energy Industrypr.Lenina30643050TomskRussian Federation National University of Oil and Gas Gubkin University Department of Physical and Colloidal Chemistrypr.Lenina65119991MoscowRussian Federation

The results of experimental studies of carbon materials, which are formed in the plasma of a direct current (DC) arc discharge initiated in open air from the asphaltenes of different origins, extracted from the natural asphaltite and from the oil of the Sredne-Ugutskoye Oilfield, are presented. The influence of the initial asphaltene composition on the composition and properties of the resulting carbon materials is analyzed. The initial asphaltenes and the samples of the carbon materials are characterized by the methods of X-ray diffraction, differential thermal analysis, X-ray fluorescence analysis, IR-Fourier spectroscopy, laser diffraction, transmission and scanning electron microscopy. The changes in the composition and structure of the asphaltenes are determined before and after their plasma treatment and the hypotheses are put forward concerning the chemical processes causing the changes in the molecular structure of the samples. As a result of plasma treatment of asphaltenes (100 A, 30 s), it was shown that graphitization occurs, as well as oxidation, and a decrease in sulfur content. Moreover, nanotubes and nano-onions have been detected using electron microscopy. Petroleum asphaltenes after plasma treatment give a less thermostable carbon material, but with a lower content of heteroatoms, and with a large amount of sulfur in the composition of sulfoxide structural fragments. This method is shown to be a promising technology for processing the petroleum feedstock enriched with heavy asphaltene components for the manufacture of carbon nanomaterials: nanotubes, nano-onions and polyhedral graphite.

关键词： Asphaltenes Natural asphaltite Carbon materials Nanomaterials Plasma treatment Graphite

Effect of the position of the corneal lamella on the frequency of its detachment

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International Journal of Ophthalmology(English edition) 2022年第12期15卷 1940-1943页

作者： pavel Studeny Magdalena Netukova Martina Nemcokova Yun-Min Klimesova Deli Krizova Department of Ophthalmology University Hospital Kralovske Vinohrady and 3rd Faculty of MedicineCharles UniversityPrague 10034Czech Republic Eye Clinic SomichKarlovy Vary 36006Czech Republic

AIM:To determine the influence of gaps[places where neither the donor's nor the recipient's Descemet's membrane(DM)is present]and overlaps(places where the recipient's DM is covered by the donor's DM)on the frequency of postoperative detachment of DM endothelial keratoplasty(DMEK)***:Totally 64 eyes of 64 patients with Fuchs'endothelial dystrophy or bullous keratopathy indicated for DMEK were randomly divided in two *** diameter of the implanted DMEK lamella was the same in both groups(8 mm),but we changed the diameter of the removed recipient *** the first group(32 eyes),the circular area was approximately 8.5 mm(gaps);in the second group(32 eyes),the diameter was 7.5 mm(overlaps).Postoperatively we noted all cases of detachment visible on the slit lamp and these cases we indicated for *** also measured the uncorrected distance visual acuity(UDvA)as well as corrected distance visual acuity(CDvA)in decimal and postoperative endothelial cell density(ECD).The minimum follow-up time was ***:The number of rebubbling procedures in the entire group of patients was 13,i.e.,20.3%,with 6 eyes(18.7%)in the gap group,and 7 eyes(21.9%)in the overlap *** replacement(re-DMEK)was required in 3(gap group)and 2 patients(overlap group),*** dif ference between the groups was statistically *** UDvA was 0.54±0.21 in the gap group and 0.58±0.24 in the overlap *** CDvA was 0.74±0.22 and 0.80±0.16,*** was 1920±491 and 2149±570 cells/*** small differences between both groups were not statistically ***:We do not notice any difference in the group of patients with overlaps or gaps of *** presence of small areas of gaps or overlaps does not affect the frequency of detachment of the DMEK lamellae.

关键词： centrally positioned Descemet graft Descemet graf t detachment Descemet membrane endothelial keratoplasty posterior lamellar keratoplasty recovery of corneal transparency

Phylogeography of the common hamster(Cricetus cricetus):paleoclimatic reconstructions of Late Pleistocene colonization

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Integrative Zoology 2023年第3期18卷 581-599页

作者： Natalia Yu.FEOKTISTOvA Ilya G.MESCHERSKY Georgy I.SHENBROT Andrey Yu.PUZACHENKO Sergey I.MESCHERSKY pavel L.BOGOMOLOv Alexey v.SUROv A.N.Severtsov Institute of Ecology and Evolution Russian Academy of SciencesMoscowRussia Mitrani Department of Desert Ecology Jacob Blaustein Institutes for Desert ResearchBen-Gurion University of the NegevMidreshet Ben-GurionIsrael Institute of Geography Russian Academy of SciencesMoscowRussia

INTRODUCTION Anthropogenic activities and associated factors such as climate change and habitat destruction are causing the ongoing sixth mass extinction on Earth,which is a major characteristic of the ***,these factors pose the most serious environmental threat to the existence of civilization because it is *** than 500 species of mammals were found to be on the brink of extinction and likely to be lost within 20 years(Ceballos et al.2020).One example is the common hamster Cricetus cricetus(Linnaeus,1758).In 2020,this species was classified as Critically Endangered across its global range by the IUCN Red List(Banaszek et al.2020).The protection status of the common hamster was elevated by 4 levels at once—from Least Concern to Critically *** the causes behind the dramatic decline of the species are not fully understood,one may suppose it stems from the negative impact of habitat degradation and even climate change(Banaszek et al.2020).

关键词： extinction suppose irreversible

Synthesis of Al2O3-SiO2-MgO ceramics with hierarchical porous structure

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Journal of Advanced Ceramics 2017年第1期6卷 92-页

作者： Elena F.KRIvOSHAPKINA pavel v.KRIvOSHAPKIN Aleksey A.vEDYAGIN Institute of Chemistry of Komi SC UB RAS Syktyvkar 167982 Russia ITMO University St.Petersburg 197101 Russia Boreskov Institute of Catalysis SB RAS Novosibirsk 630090 Russia National Research Tomsk Polytechnic University Tomsk 634050 Russia

A series of asymmetric cordierite ceramics with hierarchical porous structure were prepared and characterized. The macroporous support was obtained from natural raw materials (bauxite, silica sand, kaolinite, talc, and alumina) via ceramic technology. The prepared ceramic discs were characterized by a narrow pore size distribution. The average pore size was about 9.5 μm, and the open porosity was estimated to be 30%. Coating the discs with micro/mesoporous cordierite layer was performed using the sol–gel approach. Three-component sols were obtained from organic or inorganic precursors. Corresponding gels were calcined at 1200 °C to form the cordierite structure. The nature of precursor was found to affect the pore volume distribution. Narrow pore volume distribution was observed when organic precursors were used. Another key factor to control the parameters of final material was the drying condition. Supercritical drying of the gels has allowed us to increase the surface area in two orders of magnitude comparing with conventional drying procedure.

关键词： sol–gel method aerogels cordierite Al 2 O 3 –SiO 2 –MgO hierarchical porous structure