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The Holocene environmental changes revealed from the sediments of the Yarkov sub-basin of lake Chany,south-western Siberia

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Geoscience Frontiers 2023年第2期14卷 133-153页

作者： S.K.Krivonogov A.N.Zhdanova P.A.Solotchin A.Y.Kazansky V.V.Chegis Z.liu M.Song S.V.Zhilich N.A.Rudaya X.Cao O.V.Palagushkina l.b.nazarova l.S.Syrykh Institute of Geology and Mineralogy Russian Academy of SciencesSiberian BranchNovosibirskRussia Novosibirsk State University NovosibirskRussia Korkyt Ata Kyzylorda University KyzylordaKazakhstan Moscow State University MoscowRussia Geological Institute Russian Academy of SciencesMoscowRussia Pushkov Institute of Terrestrial Magnetism Ionosphere and Radio Wave PropagationRussian Academy of SciencesTroitskRussia Department of Earth Sciences The University of Hong KongHong KongChina State Key laboratory of loess and Quaternary Geology Institute of Earth EnvironmentChinese Academy of SciencesXi’anChina Institute of Archaeology and Ethnography Russian Academy of SciencesSiberian BranchNovosibirskRussia Tomsk State University TomskRussia Alpine Paleoecology and Human Adaptation Group(AlPHA) State Key Laboratory of Tibetan Plateau Earth SystemEnvironment and Resources(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijingChina Volga Region Federal University KazanRussia Krasnoyarsk Science Center Russian Academy of SciencesSiberian BranchKrasnoyarskRussia Herzen State Pedagogical University St.PetersburgRussia

lake Chany is the largest endorheic lake in Siberia whose catchment is entirely on the territory of *** geographical location on the climate-sensitive boundary of wet and dry landscapes provides an opportunity to gain more knowledge about environmental changes in the West Siberian interior during the Holocene and about the evolution of the lake *** cores obtained from the Yarkov subbasin of the lake in 2008 have been comprehensively studied by a number of approaches including sedimentology and AMS dating,pollen,diatom and chironomid analyses(with statistical interpretation of the results),mineralogy of authigenic minerals and geochemistry of plant lipids(biomarker analysis.).Synthesis of new results presented here and published data provides a good justification for our hypothesis that lake Chany is very young,no older than 3.6 ka *** that,between 9 and 3.6 ka bP,the Chany basin was a swampy landscape with a very low sedimentation rate;it could not be identified as a water *** the early lake phase,between 3.6 and 1.5 ka bP,the lake was shallow,1.2–3.5 m in depth,and it rose to its modern size,up to 6.5 m in depth,during the last *** data reveal important changes in the understanding of the history of this large endorheic lake,as before it was envisioned as a large lake with significant changes in water level since ca.14 ka *** addition to hydrology,our proxies provide updates and details of the regional vegetation and climate change since ca.4 ka bP in the WestSiberian forest-steppe and *** evolution of the Chany basin is dependent on hydroclimatic changes in a large region of southern West Siberia,we compare lake-level change and climate-change proxies from the other recently and most comprehensively studied lakes of the region.

关键词： Saline lake Multiproxy study Holocene Climate Environment West Siberia

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black hole shadows in Einstein-bel-Robinson gravity

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Chinese Physics C 2024年第5期48卷 272-283页

作者： b.Hamil b.C.lütfüoğlu laboratoire de Physique Mathématique et Subatomique Facultédes Sciences ExactesUniversitéConstantine 1ConstantineAlgeria Department of Physics University of Hradec KrálovéRokitanského 6250003 Hradec KrálovéCzechia

Gravity models given by higher-order scalar curvature corrections are believed to bear important consequences. Einstein-bel-Robinson (EbR) gravity with quartic curvature modification motivated Sajadi et al. to explore static spherically symmetric black hole solutions using perturbative methods. In this study, inspired by their work, we investigate AdS black hole shadows in EbR gravity and demonstrate how the gravity parameter alters the energy emission rate. Finally, we address the same problem in the presence of plasma, because the black holes are thought to be surrounded by a medium that changes the geodesic of photons.

关键词： black hole shadows Einstein-bel-Robinson gravity plasma

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Optimal Control of Service Rates of Discrete-Time(s,Q)Queueing-Inventory Systems with Finite buffer

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Journal of Systems Science and Systems Engineering 2024年第3期33卷 261-280页

作者： l.Iniya b.Sivakumar G.Arivarignan School of Mathematics Madurai Kamaraj UniversityMaduraiTamilnaduIndia Department of Statistics Manonmaniam Sundaranar UniversityTirunelveliTamilnaduIndia

This article,we develop an optimal policy to control the service rate of a discrete time queueing-inventory system with finite *** customers arrive according to a bernoulli process and the service time for the customers are *** the buffer size attains its maximum,any arriving new customers are considered to be *** customers are served one by one according to FCFS rule and each customers request random number of *** inventory is replenished according to a(s,Q)inventory policy with geometric lead *** main objectives of this article are to determine the service rates to be employed at each slot so that the long run expected cost rate is minimized for fixed inventory level and fixed buffer size and to minimize the expected waiting time for a fixed inventory level and fixed buffer *** problems are modelled as Markov decision *** establish the existence of a stationary policy and employ linear programming method to find the optimal service *** provide some numerical examples to illustrate the behaviour of the model.

关键词： Queueing-inventory system discrete time batch demand-Markov decision process

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Weighted Probability Density Estimator with Updated bandwidths

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Journal of Systems Science & Complexity 2024年第2期37卷 886-906页

作者： WU Yi YU Wei WANG Xuejun PRAKASA RAO b l S School of big Data and Artificial Intelligence Chizhou UniversityChizhou 247000China School of big Data and Statistics Anhui UniversityHefei 230601China CR Rao Advanced Institute of Mathematics Statistics and Computer ScienceHyderabad 500046India

In this paper,the authors study a class of weighted version of probability density *** is shown that the weighted estimator contains some existing estimators of probability density,no matter they are recursive or *** statistical results including weak consistency,strong consistency,rate of strong consistency,and asymptotic normality are established under some mild ***,the random weighted estimator is also *** numerical simulations and a real data analysis are presented to study the numerical performances of the estimators.

关键词： Asymptotic normality consistency numerical simulation probability density real data analysis updated bandwidths weighted estimator

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Semi-analytical investigation of heat transfer in a porous convective radiative moving longitudinal fin exposed to magnetic field in the presence of a shape-dependent trihybrid nanofluid

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Applied Mathematics and Mechanics(English Edition) 2024年第1期45卷 197-216页

作者： C.G.PAVITHRA b.J.GIREESHA M.l.KEERTHI Department of PG Studies and Research in Mathematics Kuvempu UniversityShankaraghatta 577451India Department of Mathematics and Statistics M.S.Ramaiah University of Applied SciencesBengaluru 560058India

The thermal examination of a non-integer-ordered mobile fin with a magnetism in the presence of a trihybrid nanofluid(Fe_3O_4-Au-Zn-blood) is carried out. Three types of nanoparticles, each having a different shape, are considered. These shapes include spherical(Fe_3O_4), cylindrical(Au), and platelet(Zn) configurations. The combination approach is utilized to evaluate the physical and thermal characteristics of the trihybrid and hybrid nanofluids, excluding the thermal conductivity and dynamic viscosity. These two properties are inferred by means of the interpolation method based on the volume fraction of nanoparticles. The governing equation is transformed into a dimensionless form, and the Adomian decomposition Sumudu transform method(ADSTM) is adopted to solve the conundrum of a moving fin immersed in a trihybrid nanofluid. The obtained results agree well with those numerical simulation results, indicating that this research is reliable. The influence of diverse factors on the thermal overview for varying noninteger values of γ is analyzed and presented in graphical representations. Furthermore, the fluctuations in the heat transfer concerning the pertinent parameters are studied. The results show that the heat flux in the presence of the combination of spherical, cylindrical, and platelet nanoparticles is higher than that in the presence of the combination of only spherical and cylindrical nanoparticles. The temperature at the fin tip increases by 0.705 759% when the value of the Peclet number increases by 400%, while decreases by 11.825 13% when the value of the Hartman number increases by 400%.

关键词： convection radiation moving longitudinal fin Adomian decomposition Sumudu transform method(ADSTM) trihybrid nanofluid magnetic field

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The Making of a Health Profession:How Chinese Medicine became a Nationally Registered Allied Health Profession in Australia

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Chinese Medicine and Culture 2024年第1期7卷 51-62页

作者： John l McDonald Judy b James School of Chinese Medicine Endeavour College of Natural HealthSouthport 4215Australia Acupuncture Now Australia Brisbane 4120Australia

In 2012, traditional Chinese medicine(TCM) practitioners in Australia became nationally-registered allied health professionals in three categories: acupuncturist, Chinese herbal medicine practitioner, and Chinese herbal medicine dispenser. Australia was the first Western country to introduce national registration for Chinese medicine, followed by Portugal and, recently, New Zealand. The practice of TCM in Australia can be traced back to the beginning of Chinese immigration to Australia during the Victorian Gold Rush which began in the 1850s. The process which led to national registration commenced in the early 1970s with the establishment of the first acupuncture courses. Decades of gradual development of courses from unaccredited part-time diplomas to accredited bachelor degrees, and the development, by the profession, of national consensus on educational standards were essential elements in the process which led to registration. Professional associations, such as the Australian Acupuncture and Chinese Medicine Association ltd.(AACMA), also developed a framework of professional selfregulation, including Codes of Ethics, Codes of Conduct, ongoing professional development requirements and Infection Control Guidelines, and provided leadership in the development of the profession. After decades of tribalism and division within the TCM profession, the National Academic Standards Committee brought almost all stakeholders together to reach a consensus on the Australian Guidelines for Traditional Chinese Medicine Education which were published by AACMA in 2001. Professional associations also collaborated on joint submissions to the government in support of registration, which was introduced first in the state of Victoria in 2000, and subsequently became national in 2012. Despite national registration, some barriers still remain, and professional associations continue to lobby the federal government for inclusion in Medicare, chronic disease management scheme, and Veterans

关键词： Acupuncture Chinese medicine Registration Regulation Education Standards Australia TCM

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基于模糊自适应控制的温室温度调控

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农业工程学报 2024年第14期40卷 190-198页

作者：侍昌阳朱德兰王亚利张锐张廷宁 KHUDAYbERDI Nazarov 柳昌新 nazarova Sayyora 西北农林科技大学水利与建筑工程学院西北农林科技大学旱区农业水土工程教育部重点实验室陕西咸阳杨凌区农业农村局塔什干国立农业大学农业生物学学院塔什干国立经济大学外国语学院

为了实现温室在冬季时温度控制精度高、能耗小的目标，该研究提出了一种将热量平衡原理与模糊控制相结合的模糊自适应控制方法，在模糊控制器中加入基于热量平衡方程的输出隶属度函数修正模块，通过监测温室内外温度数据，在上位机中对... 详细信息

为了实现温室在冬季时温度控制精度高、能耗小的目标，该研究提出了一种将热量平衡原理与模糊控制相结合的模糊自适应控制方法，在模糊控制器中加入基于热量平衡方程的输出隶属度函数修正模块，通过监测温室内外温度数据，在上位机中对模糊控制器中的输出隶属度函数进行自适应调整，最终使温室温度稳定在目标温度。结果表明，基于热量平衡方程的温室温度模糊自适应控制系统具有较好的稳定性和准确性，在设置20℃为目标温度值的情况下，基于热量平衡方程的模糊自适应控制最终使温室温度稳定在(19.8±0.11)℃，一般模糊控制方法最终使温室温度稳定在(13.5±0.5)℃，无法达到目标环境温度值，而阈值控制最终使温室温度稳定在(20.0±0.85)℃；同时，基于热量平衡方程的温室温度模糊自适应控制能耗较低，且能量利用率更高，模糊自适应控制能量利用率为45.97%，而阈值能量利用率仅为20.21%。研究提出的基于热量平衡方程的模糊自适应控制方法不仅满足温室温度调控需求，而且能够提高能量利用率，降低能耗。

关键词：温室温度环境控制模糊控制自适应控制

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Cr-induced fusion reactions to synthesize superheavy elements

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Nuclear Science and Techniques 2024年第5期35卷 122-130页

作者： S.Madhu H.C.Manjunatha N.Sowmya b.M.Rajesh l.Seenappa R.S.Susheela Department of Physics R V College of EngineeringBangalore 560074India Visvesvaraya Technological University BelagaviKarnataka 590018India Department of Physics Government First Grade CollegeSrinivasapurKarnataka 563135India Department of Physics Government First Grade CollegeDevanahallyKarnataka 562110India Department of Physics Government First Grade CollegeMulbagalKarnataka 563131India Department of Physics Government First Grade collegeNanjangudOoty RoadMysore 571301India

We investigated ^(50,52-54)Cr-induced fusion reactions for the synthesis of the superheavy element in the 104≤Z≤122 *** cross sections produced in this investigation using ^(54)Cr projectiles were compared with those obtained in prior *** estimated cross sections from this analysis are consistent with the findings of prior *** the current study,the predicted cross section was found to be 42fb at 236 MeV for ^(53)Cr+^(243)Am,23.2 fb at 236 MeV for ^(54)Cr+^(247)Cm,95.6 fb at 240 MeV for ^(53)Cr+248bk,and 1.33 fb at 242 MeV for ^(53)Cr+***,these projected cross sections with excitation energy and beam energy will be useful in future Cr-induced fusion reaction investigations.

关键词： Fusion cross sections Compound nucleus formation probability Survival probability Evaporation residue cross sections

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In situ TEM investigation of electron irradiation and aging-induced high-density nanoprecipitates in an Mg-10Gd-3Y-1Zn-0.5Zr alloy

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Journal of Magnesium and Alloys 2024年第5期12卷 1841-1853页

作者： M.lv H.l.Ge Q.Q.Jin X.H.Shao Y.T.Zhou b.Zhang X.l.Ma Shenyang National laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences School of Materials Science and Engineering University of Science and Technology of China Materials Science and Engineering Research Center Guangxi University of Science and Technology

In-situ electron irradiation and aging are applied to introduce high-density precipitates in an Mg-10Gd-3Y-1Zn-0.5Zr(GWZ1031K, wt.%)alloy to improve the hardness. The results show that the hardness of the Mg alloy after irradiation for 10 h and aging for 9 h at 250 ℃ is 1.64 GPa, which is approximately 64% higher than that of the samples before being treated. It is mainly attributed to γ' precipitates on the basal plane after irradiation and the high-density nanoscale β' precipitates on the prismatic plane after aging, which should be closely related to the irradiation-induced homogenous clusters. The latter plays a key role in precipitation hardening. This result paves a way to improve the mechanical properties of metallic materials by tailoring the precipitation through irradiation and aging.

关键词： Mg alloy Electron beam irradiation Hardening Precipitates In-situ TEM

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SANC Monte Carlo programs for small-angle bhabha scattering

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Chinese Physics C 2024年第4期48卷 14-19页

作者： A.b.Arbuzov S.G.bondarenko I.R.boyko l.V.Kalinovskaya A.A.Kampf R.R.Sadykov V.l.Yermolchyk bogoliubov laboratory of Theoretical Physics JINRDubna141980 Russia Dzhelepov laboratory of Nuclear Problems JINRDubna141980 Russia Dubna State University Dubna141982 Russia

luminosity monitoring at e^(+)e^(−)colliders was investigated using SANC Monte Carlo event generator ReneSANCe and integrator MCSANC for simulation of bhabha scattering at low *** are presented for center-of-mass energies of the Z boson resonance and at 240 GeV for the conditions of typical luminosity *** is shown that bremsstrahlung events with extremely low electron scattering angles are relevant to match the precision tags of future electron-positron colliders.

关键词： luminosity bhabha scattering QED Monte Carlo simulation

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