检索结果-南通市图书馆

A new tectonic model for the Itmurundy Zone,central Kazakhstan:linking ocean plate stratigraphy,timing of accretion and subduction polarity

在线全文

学校读者我要写书评

暂无评论

Geoscience Frontiers 2024年第4期15卷 245-273页

作者： Inna Safonova Ilya Savinskiy Alina Perfilova Olga Obut Alexandra Gurova sergei Krivonogov Southwest Jiaotong University Xi’an Road 999ChengduChina Sobolev Institute of Geology and Mineralogy SB RASKoptyuga Ave.3NovosibirskRussia Novosibirsk State University Pirogova St.2NovosibirskRussia Trofimuk Institute of Petroleum Geology and Geophysics SB RAS Koptyuga Ave.3NovosibirskRussia

The Itmurundy Zone of Central Kazakhstan is a key structure in the core of the Kazakh Orocline representing a typical Pacific-type orogenic belt hosting accretionary complex,ophiolite massifs and serpentinite mé*** main controversies in the existing tectonic models of the Itmurundy Zone are about the timing of subduction and accretion,the direction and kinematics of subduction and the number of oceanic plates.A new model for the early Paleozoic tectonic story of the Itmurundy Zone is postulated in this paper,based on new detailed geological and U-Pb detrital zircon age data,combined with previously documented geological,U-Pb age,microfossil,geochemical and isotope data from igneous rocks,deep-sea sediments and greywacke *** present study employs the Ocean Plate Stratigraphy(OPS)model to explain the tectonic processes involved in the evolution of the Itmurundy Zone and to pre-sent a holistic story of Ordovician oceanic plate(s),which accretion formed an accretionary *** detailed mapping allows distinguishing three types of OPS assemblages:(1)Chert-dominated,(2)OIB-hosting,and(3)*** U-Pb ages of detrital zircons from sandstones of OIB and Chert types show unimodal distributions with similar main peaks of magmatism at 460-455 Ma in the provenance,and their maximum depositional ages(MDA)span 455-433 *** samples from OPS Type 3 show the peaks of magmatism both at ca.460 Ma and the MDA of 452 Ma and 459 Ma,*** MDA of sandstones and microfossils data from chert show the younging of strata to the south and SE in Types 1 and 2 and to NEE for Type 3(in present coordinates)suggesting double-sided subduction to the NNW and SEE and,accordingly,the co-existence of pieces of two oceanic plates in Ordovician *** U-Pb zircon data from both igneous and clastic rocks indicate a period of subduction erosion in early Ordovician *** a whole,the accreted OPS units of the Itmurundy Zone record the timing of subduction and accre

关键词： Central Asian Orogenic Belt Accretionary complex Magmatic rocks Sedimentary rocks Subduction polarity Lithospheric plates

Active and passive modulation of solar light transmittance in a uniquely multifunctional dual-band single molecule for smart window applications

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第1期88卷 293-305,I0007页

作者： Pooja V.Chavan Pramod V.Rathod Joohyung Lee sergei V.Kostjuk Hern Kim Department of Energy Science and Technology Environmental Waste Recycle InstituteMyongji UniversityYonginGyeonggi-do 17058Republic of Korea Department of Chemical Engineering Myongji UniversityYonginGyeonggi-do 17058Republic of Korea Research Institute for Physical Chemical Problems of the Belarusian State University MinskBelarus

Functional materials may change color by heat and electricity separately or simultaneously in smart *** materials have not only demonstrated remarkable potential in the modulation of solar radiation but are also leading to the development of indoor environments that are more comfortable and conducive to improving individuals'quality of ***,dual-responsive materials have not received ample research attention due to economic and technological *** a consequence,the broader utilization of smart windows faces *** address this new generational multistimulus responsive chromic materials,our group has adopted a developmental strategy to create a poly(NIPAM)n-HV as a switchable material by anchoring active viologen(HV)onto a phase-changing poly(NIPAM)n-based smart material for better utility and *** constructed smart windows facilitate individualistic reversible switching,from a highly transparent state to an opaque state(thermochromic)and a red state(electrochromic),as well as facilitate a simultaneous dual-stimuli response reversible switching from a clear transparent state to a fully opaque(thermochromic)and orange(electrochromic)*** privacy can be attained in smart windows designed for exclusive settings by achieving zero *** unique chromic mode operates independently and modulates visible and near-infrared(NIR)light in a distinct ***,these smart windows with thermal and electric dual-stimuli responsiveness demonstrate remarkable heat regulation capabilities,rendering them highly attractive for applications in building facades,energy harvesting,privacy protection,and color display.

关键词： Smart windows Thermochromism Electrochromism Energy saving Dual-responsive material

Central Asia revealed as a key area in evolution of Eremurus (Asphodelaceae)

在线全文

学校读者我要写书评

暂无评论

Plant Diversity 2024年第3期46卷 333-343页

作者： Dilmurod Makhmudjanov sergei Volis Ziyoviddin Yusupov Inom Juramurodov Komiljon Tojibaev Tao Deng Hang Sun CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201YunnanChina Yunnan International Joint Laboratory for Biodiversity of Central Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201YunnanChina Institute of Botany Academy Sciences of UzbekistanTashkent 100125Uzbekistan University of Chinese Academy of Sciences Beijing 100864China

Eremurus was described at the beginning of the 19th ***,due to limited sampling and the small number of gene markers to date,its phylogeny and evolution are largely *** this study,we analyzed plastomes from 27 species belonging to 2 subgenera and 3 sections of Eremurus,which are found in Central Asia(its center of diversity)and *** also analyzed nuclear DNA ITS of 33 species,encompassing all subgenera and sections of the genus in Central Asia,southwest Asia and *** findings revealed that the genus was monophyletic,although both subgenera Eremurus and Henningia were found to be *** plastome and nrDNA-based phylogenetic trees had three clades that did not reflect the current taxonomy of the *** biogeographical and time-calibrated trees suggest that Eremurus originated in the ancient Tethyan area in the second half of the *** of Eremurus occurred from the early Oligocene to the late *** Sea retreat and several orogenetic events,such as the progressive uplift of the Qinghai-Tibet Plateau and surrounding mountain belts(Altai,Pamir,Tian Shan),caused serious topographic and climate(aridification)changes in Central Asia that may have triggered a split of clades and *** this transformed Central Asia,speciation proceeded rapidly driven mainly by vicariance caused by numerous mountain chains and specialization to a variety of climatic,topographic and soil conditions that exist in this region.

关键词： Asphodelaceae Asphodeloideae Plastome Central Asia Qinghai-Tibet Plateau

A new aberrant species of the genus Sphaerostoma(Trematoda: Opecoelidae) from the Amur River basin

在线全文

学校读者我要写书评

暂无评论

Zoological Systematics 2024年第4期 352-360页

作者： Sergey G.Sokolov sergei V.Shchenkov Evgeniy V.Frolov sergei A.Vlasenkov A.N.Severtsov Institute of Ecology and Evolution RAS Department of Invertebrate Zoology St.Petersburg State University Sakhalin Branch of Russian Federal Research Institute of Fisheries and Oceanography

A new freshwater opecoelid species, Sphaerostoma tamarae sp. nov., is described from Rhynchocypris percnura mantschurica caught in the Syumnyur River(Amur River basin,Russia). This parasite species differs from all other congeners in the distribution of the vitelline follicles(restricted to the hindbody) and the morphology of the ventral sucker(strongly protuberant). Molecular phylogenetic analysis based on 28S rRNA gene sequences and the morphological analysis allow to tentatively assign the new species to the genus Sphaerostoma,without closing the question regarding the true genus affiliation of this species. In addition, the authors provide an argument for renaming the Plagioporinae to the Sphaerostomatinae.

关键词：

The role of singlet oxygen and hydroxyl radical in the photobleaching of meso-substituted cationic pyridyl porphyrins in the presence of folic acid

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Innovative Optical Health Sciences 2024年第5期17卷 67-80页

作者： Lusine Mkrtchyan Torgom Seferyan Marina Parkhats sergei Lepeshkevich Boris Dzhagarov Gagik Shmavonyan Elena Tuchina Valery Tuchin Grigor Gyulkhandanyan Laboratory of Bioengineering Institute of Biochemistry After H.Buniatyan of the NAS of Armenia 5/1 Paruyr Sevak StreetYerevan 0014Armenia Laboratory of Biomedical Research Institute of Biochemistry after H.Buniatyan of the NAS of Armenia 5/1 Paruyr Sevak StreetYerevan 0014Armenia B.I.Stepanov Institute of Physics NAS of Belarus 68-2 Nezavisimosti Avenue Minsk 220072Belarus National Polytechnic University of Armenia 105 Teryan Street Yerevan 0009Armenia Science Medical Centre Saratov State University 83 Astrakhanskaya StreetSaratov 410012Russia

Using a photosensitizer(PS),light,and oxygen,photodynamic therapy creates cytotoxic reactive oxygen species,such as singlet oxygen(1O2),that kill cancer *** cancer cell lines have up to 300 times more folic acid receptors than healthy ***,folic acid is often used to improve selectivity of *** poses a disadvantage for *** this paper,we have studied the photoinduced changes of meso-substituted cationic pyridyl porphyrins in the presence of folic acid using uorescence and absorption *** this work,it was demonstrated that L-histidine,which is a 1O2 quencher,and D-mannitol,which is a hydroxyl radical quencher,can reduce photobleaching of cationic porphyrins and their interaction products with *** implies both singlet oxygen and hydroxyl radicals are involved in ***,our study revealed certain important features of the photobleaching of cationic porphyrins in the presence of folic acid.

关键词： Photodynamic therapy cancer quenchers histidine mannitol

Customized heat treatment process enabled excellent mechanical properties in wire arc additively manufactured Mg-RE-Zn-Zr alloys

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Extreme Manufacturing 2024年第4期6卷 276-289页

作者： Dong Ma Chunjie Xu Shang Sui Yuanshen Qi Can Guo Zhongming Zhang Jun Tian Fanhong Zeng sergei Remennik Dan Shechtman School of Materials Science and Engineering Xi'an University of TechnologyXi'anShaanxi 710048People's Republic of China Xi'an Shechtman Nobel Prize New Materials Institute Xi'an 710048People's Republic of China Xi'an Key Laboratory of Advanced Magnesium Alloy Additive Manufacturing and Precision Forming Xi'anShaanxi 710048People's Republic of China Department of Materials Science and Engineering and Guangdong Provincial Key Laboratory of Materials and Technologies for Energy Conversion Guangdong Technion—Israel Institute of TechnologyShantou 515063People's Republic of China MGM Nobel Prize New Materials Co. LtdTongchuan 727100People's Republic of China Department of Materials Science and Engineering Technion-Israel Institute of TechnologyHaifa 32000Israel Center for Nanoscience&Nanotechnology Hebrew University of JerusalemEdmond J.Safra CampusJerusalem 91904Israel

Customized heat treatment is essential for enhancing the mechanical properties of additively manufactured metallic materials,especially for alloys with complex phase constituents and heterogenous ***,the interrelated evolutions of different microstructure features make it difficult to establish optimal heat treatment ***,we proposed a method for customized heat treatment process exploration and establishment to overcome this challenge for such kind of alloys,and a wire arc additively manufactured(WAAM)Mg-Gd-Y-Zn-Zr alloy with layered heterostructure was used for feasibility *** this method,the optimal microstructures(fine grain,controllable amount of long period stacking ordered(LPSO)structure and nano-scaleβ'precipitates)and the corresponding customized heat treatment processes(520°C/30 min+200°C/48 h)were obtained to achieve a good combination of a high strength of 364 MPa and a considerable elongation of 6.2%,which surpassed those of other state-of-the-art WAAM-processed Mg ***,we evidenced that the favorable effect of the undeformed LPSO structures on the mechanical properties was emphasized only when the nano-scaleβ'precipitates were *** is believed that the findings promote the application of magnesium alloy workpieces and help to establish customized heat treatment processes for additively manufactured materials.

关键词： wire arc additive manufacturing heat treatment Mg-RE-Zn-Zr alloys LPSO structure mechanical properties

Theory and Properties of Atomic Spacetime

在线全文

学校读者我要写书评

暂无评论

Journal of Applied Mathematics and Physics 2024年第6期12卷 1967-2006页

作者： sergei Yu. Eremenko Department of Mathematical Modeling and Artificial Intelligence National Aerospace University Kharkiv Aviation Institute Kharkiv Ukraine Soliton Scientific Sydney Australia

Following A. Einsteins aspirations for an atomic theory, a novel theory of spacetime quantization/atomization based on finite Atomic AString Functions evolving since the 1970s is offered. Atomization Theorems allow representing polynomials, analytic functions, and solutions of General Relativity via the superposition of solitonic atoms which can be associated with flexible spacetime quanta, metriants, or elementary distortions. With multiple interpretations discussed, discrete-continuous spacetime is conceptualized as a lattice network of flexible solitonic atoms adjusting locations to reproduce different metrics. The theory may offer some variants of unified field theory under research based on Atomic AString Function where, like in string theory, fields become interconnected having a common mathematical ancestor.

关键词： Spacetime Quantum Atomic Function AString Soliton Metriant Unified Theory

Optimizing ASReview Simulations:A generic Multiprocessing Solution for“Light-data'and“Heavy-data'Users

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Data Intelligence 2024年第2期6卷 320-343页

作者： sergei Romanov Abel Soares Siqueira Jonathan de Bruin Jelle Teijema Laura Hofstee Rens van de Schoot Applied Data Science Department of Information and Computing ScienceFaculty of ScienceUtrecht University Netherlands eScienceCenter AmsterdamNL Department of Research and Data Management Services Information Technology ServicesUtrecht UniversityUtrechtthe Netherlands Department of Methodology and Statistics Faculty of Social and Behavioral SciencesUtrecht University

Active learning can be used for optimizing and speeding up the screening phase of systematic *** simulation studies mimicking the screening process can be used to test the performance of different machine-learning models or to study the impact of different training *** paper presents an architecture design withamultiprocessing computational strategyforrunningmanysuch simulation studiesinparallel,using the ASReview Makita workflow generator and Kubernetes software for deployment with cloud *** provide a technical explanation of the proposed cloud architecture and its *** addition to that,we conducted 1140 simulations investigating the computational time using various numbers of CPUs and RAM *** analysis demonstrates the degree to which simulations can be accelerated with multiprocessing computing *** parallel computation strategy and the architecture design that was developed in the present paper can contribute to future research with more optimal simulation time and,at the same time,ensure the safe completion of the needed processes.

关键词： Active learning Systematic review Simulation study Multiprocessing Cloud architecture

Green synthesis of biocompatible Gd^(3+)-doped ultrasmall carbon-based nanohybrids from coffee wastes

在线全文

学校读者我要写书评

暂无评论

Carbon Resources Conversion 2024年第2期7卷 64-73页

作者： Konstantin Paliienko Anna Topchylo sergei Alekseev Alain Géloën Yurii Milovanov Tetiana Lysenko Valeriy Skryshevsky Tatiana Borisova Vladimir Lysenko Department of Neurochemistry Palladin Institute of BiochemistryNational Academy of Sciences of Ukraine9 Leontovicha strKyiv 01054Ukraine Corporation Science Park Taras Shevchenko University of Kyiv60 Volodymyrska Str.Kyiv 01033Ukraine Institute of High Technologies Taras Shevchenko National University of Kyiv64 Volodymyrska Str.01601 KyivUkraine Faculty of Chemistry Taras Shevchenko National University of Kyiv64 Volodymyrska Str.01601 KyivUkraine UMR Ecologie Microbienne Lyon(LEM) CNRS 5557INRAE 1418Claude Bernard University of LyonVetAgro SupResearch Team“Bacterial Opportunistic Pathogens and Environment”(BPOE)University of LyonF-69622 VilleurbanneFrance Light Matter Institute UMR-5306Claude Bernard University of Lyon/CNRSUniversitéde Lyon69622 Villeurbanne CedexFrance

A cheap method allowing fabrication of biocompatible,ultra-small(2-10 nm)and fluorescent(λ_(em)=425-500 nm)nanohybrids(NHs)from coffee wastes is *** gadolinium-doped nanohybrids(GDNHs)or gadolinium-free carbon dots(GFCDs)can be synthesized in a domestic microwave oven according to green synthesis *** sizes,chemical composition,impact on proton magnetic resonance relaxation time and optical properties of the GDNHs and GFCDs were studied in details and *** particular,doping of the NHs with Gd^(3+)ions,up to 1.87%w/w of gadolinium per particles’weight,will allow their application for magnetic resonance imaging(MRI).Furthermore,cell culture tests on human adenocarcinomic alveolar basal epithelial cells line(A549)have shown high biocompatibility of the GDNHs and in a wide concentration range 100-1000μg/ml.

关键词： Carbon dots from coffee waste Carbon dots for MRI Gadolinium-doped carbon dots Microwave-assisted synthesis