检索结果-南通市图书馆

detailed seismic zoning of the East Kazakhstan region in the Republic of Kazakhstan

在线全文

学校读者我要写书评

暂无评论

Geodesy and Geodynamics 2024年第2期15卷 156-165页

作者： natalya v.Silacheva n.p.Stepanenko O.K.Kurilova A.d.Kudabayeva A.T.danabayeva institute of Seismology Ministry of Emergency SituationsAlmaty 050060Kazakhstan

Kazakhstan is currently drafting new construction regulations that comply with the major provisions of the Eurocodes.Such regulations are created on the basis of seismic zoning maps of various degrees of detail,developed by our institute of Seismology using a new methodological approach for Kazakhstan.The article is about creating the first normative map of the detailed Seismic Zoning on a probabilistic foundation for the Republic of Kazakhstan’s East Kazakhstan region.We carried out the probabilistic assessment of seismic hazard using a methodology consistent with the main provisions of Eurocode 8and updated compared with that used in developing maps of Kazakhstan’s General Seismic Zoning and seismic microzoning of Almaty.The most thorough and current data accessible for the area under consideration were combined with contemporary analytical techniques.Updates have been done to not only the databases being used but also the way seismic sources were shown,including active faults now.On a scale of 1:1000000,precise seismic zoning maps of the East Kazakhstan region were created for two probabilities of exceedance:10%and 2%in 50 years in terms of peak ground accelerations and macroseismic intensities.The obtained seismic hazard distribution is generally consistent with the General Seismic Zoning of Kazakhstan’s previous findings.However,because active faults were included and a thoroughly revised catalog was used,there are more pronounced zones of increased danger along the fault in the western part of the region.in the west of the territory,acceleration values also increased due to a more accurate consideration of seismotectonic conditions.Zoning maps are the basis for developing new state building regulations of the Republic of Kazakhstan.

关键词： probabilistic seismic hazard assessment detailed seismic zoning peak ground acceleration Microseismical intensity

nanomotion of bacteria to determine metabolic profile

在线全文

学校读者我要写书评

暂无评论

nanotechnology and precision Engineering 2024年第1期7卷 1-9页

作者： S.n.pleskova E.v.Lazarenko n.A.Bezrukov R.n.Kriukov A.v.Boryakov M.E.dokukin S.i.Surodin Research Laboratory of Scanning probe Microscopy Lobachevsky State University of Nizhny NovgorodNizhny Novgorod 603950Russia department of nanotechnology and Biotechnology Nizhny Novgorod State Technical University n.a.R.E.AlekseevNizhny Novgorod 603950Russia Sarov physics and Technology institute National Research Nuclear University MEPhISarov 607186Russia

in addition to their visible motion such as swimming(e.g.,with the help ofﬂagella),bacteria can also exhibit nanomotion that is detectable only with highly sensitive instruments,and this study shows that it is possible to detect bacterial nanomotion using an AFM detection system.The results show that the nanomotion characteristics depend on the bacterial strain,and that nanomotion can be used to sense the metabolic activity of bacteria because the oscillations are sensitive to the food preferences of the bacteria and the type of surrounding medium.

关键词： nanomotion Bacteria Cantilever Oscillation Atomic force microscopy Metabolism

Antibacterial HA-coatings on bioresorbable Mg alloy

在线全文

学校读者我要写书评

暂无评论

Journal of Magnesium and Alloys 2024年第5期12卷 1965-1985页

作者： K.v.nadaraia d.v.Mashtalyar M.A.piatkova A.i.pleshkova i.M.imshinetskiy M.S.Gerasimenko E.A.Belov v.v.Kumeiko d.n.Kozyrev K.A.Fomenko v.v.Mostovaya B.R.Torpanov A.R.Biktimirov i.S.Osmushko S.L.Sinebryukhov S.v.Gnedenkov institute of Chemistry FEB RAS Far Eastern Federal University A.v.Zhirmunsky national Scientific Center of Marine Biology FEB RAS Regional Clinical dermatovenerological dispensary nMiC “Treatment and Rehabilitation Center”

in this study, a calcium-phosphate coating was formed on a Mg-Mn-Ce alloy by the plasma electrolytic oxidation(pEO). The antibiotic vancomycin, widely used in the treatment of infections caused by Staphylococcus aureus(S. aureus), was impregnated into the coating.Samples with vancomycin showed high bactericidal activity against S. aureus. The mechanical and electrochemical properties of the formed coatings were studied, as well as in vitro cytotoxicity tests and in vivo tests on mature male rats were performed. According to SEM,EdS, XRd and XpS data, coatings had a developed morphology and contained hydroxyapatite, which indicates high biocompatibility.The analysis of roughness of coatings without and with vancomycin did not reveal any differences, confirming the high roughness of the samples. during electrochemical tests, an increase in corrosion resistance by more than two times after the application of pEO coatings was revealed. According to the results of an in vivo study, after 28 days of the implantation of samples with calcium phosphate pEO coating and vancomycin, no signs of inflammation were observed, while an inflammatory reaction developed in the area of implantation of bare alloy,followed by encapsulation. Antibiotic release tests from the coatings show a sharp decrease in the concentration of the released antibiotic on day 7 and then a gradual decrease until day 28. Throughout the experiment, no significant deviations in the condition and behavior of the animals were observed; clinical tests did not reveal a systemic toxic reaction.

关键词： Bioactive coatings Biocompatibility Mg alloy plasma electrolytic oxidation Hydroxyapatite vancomycin

design of Biologically Active Macromolecular Ligands and Their Luminescent Complexes with Terbium ions

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of polymer Science 2024年第5期42卷 604-611,I0007页

作者： Tatiana n.nekrasova Andrei i.Fischer natalia A.nesterova Anatoliy v.dobrodumov Anzhelika v.Garshinina Olga d.Shuvaeva natalya v.Zakharova Evgenii F.panarin institute of Macromolecular Compounds Russian Academy of Sciences31 Bolshoy pr.St Petersburg199004Russia Smorodintsev Research institute of influenza Russian Ministry of Health15/17 ul.prof.PopovaSt Petersburg197376Russia

Water-soluble copolymers of p-methacrylamidobenzoic acid(MABA)with neutral comonomers(n-vinylpyrrolidone(vp),n-methyl-n-vinylacetamide(MvAA),n-methacryloyl glucosamine(MAG))and anionic comononer sodium styrene sulfonate(naSS)were synthesized by radical copolymerization.The interactions between the prepared copolymers and Tb^(3+)ions in aqueous solutions were studied;the significant influence of chemical structure of a comonomer on luminescence intensity of Tb^(3+)complexes with the copolymers was revealed.The luminescence intensity of Tb^(3+)complexes with the copolymers containing n-vinylamide units(vp,MvAA)is three times more intense than that observed for the complexes between Tb^(3+)and MAG-containing copolymers.in the case of naSS-containing copolymers,the luminescence intensity is controlled by the values of binding constants between Tb^(3+)and MABA and the content of MABA units in a copolymer.The studied copolymers and their complexes with Tb^(3+)have low cytotoxicity and a pronounced antiviral activity against human respiratory syncytial virus.

关键词： Luminescence Water-soluble copolymers Lanthanide complexes Antiviral activity Cytotoxicity

Measurement of yields and angular distributions ofγ-quanta from the interaction of 14.1 Mev neutrons with oxygen,phosphorus,and sulfur

在线全文

学校读者我要写书评

暂无评论

Chinese physics C 2024年第3期48卷 79-92页

作者： d.n.Grozdanov n.A.Fedorov S.B.dabylova Yu.n.Kopatch i.n.Ruskov v.R.Skoy T.Yu.Tretyakova C.Hramco p.i.Kharlamov G.v.pampushik p.G.Filonchik A.v.Andreev Joint institute for nuclear Research(JinR) DubnaRussia institute for nuclear Research and nuclear Energy Bulgarian Academy of SciencesSofiaBulgaria Faculty of physics Lomonosov Moscow State UniversityMoscowRussia L.n.Gumilyov Eurasian national University AstanaKazakhstan Skobeltsyn institute of nuclear physics Moscow State UniversityMoscowRussia institute of Chemistry of Moldova ChisinauRepublic of Moldova Moscow institute of physics and Technology MoscowRussia

A study of the inelastic scattering of neutrons with an energy of 14.1 Mev on the nuclei of oxygen,phosphorus,and sulfur was performed at the TAnGRA facility at JinR(dubna).The experiment aimed to refine existing data and obtain new data on the yields and angular distributions ofγ-quanta emitted by the studied nuclei due to neutron-induced nuclear reactions using the tagged neutron method.Two types of detector systems were used to registerγ-quanta.Theγ-ray yields were measured using a high-purity germanium(HpGe)detector.The angular distributions ofγ-rays were obtained using a system of 18 scintillation detectors based on bismuth germanite Bi_(4)Ge_(3)O_(12)(BGO)located around the sample.The performed experiments measured the yields of two transitions for the reaction of tagged neutrons with 16O,nine transitions for the reaction with ^(31)p,and nine transitions for the reaction with ^(32)S for the first time.The angular anisotropy of theγ-radiation accompanying the inelastic scattering of neutrons with an energy of 14.1 Mev on ^(31)p nuclei was also measured for the first time.

关键词： tagged neutron method yields of gamma-quanta high-resolution gamma-spectrometry neutron-nuclear reactions neutron scattering

Outcomes of long-acting injectable antipsychotics use in pregnancy:A literature review

在线全文

学校读者我要写书评

暂无评论

World Journal of psychiatry 2024年第4期14卷 582-599页

作者： Ana v pejčić Srdjan M Stefanović Milošn Milosavljević vladimir S Janjić Marko M Folić nevena d Folić Jovana Z Milosavljević department of pharmacology and Toxicology Faculty of Medical SciencesUniversity of KragujevacKragujevac 34000Serbia department of pharmacy Faculty of Medical SciencesUniversity of KragujevacKragujevac 34000Serbia department of Clinical pharmacology University Clinical Center KragujevacKragujevac 34000Serbia department of psychiatry Faculty of Medical SciencesUniversity of KragujevacKragujevac 34000Serbia Clinic for psychiatry University Clinical Center KragujevacKragujevac 34000Serbia Center for pharmaceutical and pharmacological Research Faculty of Medical SciencesUniversity of KragujevacKragujevac 34000Serbia department of pediatrics Faculty of Medical SciencesUniversity of KragujevacKragujevac 34000Serbia pediatric Clinic University Clinical Center KragujevacKragujevac 34000Serbia department of Anatomy Faculty of Medical SciencesUniversity of KragujevacKragujevac 34000Serbia

BACKGROUnd Women with a history of serious psychotic disorders are at increased risk of disease relapse during pregnancy.Long-acting injectable(LAi)antipsychotics have been widely used to improve adherence and prevent relapse in patients with various severe psychotic disorders,but there is a lack of high-quality data from previous research on the safety of LAi antipsychotics during pregnancy.AiM To summarize relevant data on maternal,pregnancy,neonatal,and developmental outcomes from published cases of LAi antipsychotic use in pregnancy.METHOdS A literature search was performed through november 11,2023,using three online databases:pubMed/MEdLinE,Scopus,and Web of Science.Case reports or case series that reported information about the outcomes of pregnancy in women who used LAi antipsychotics at any point in pregnancy,with available full texts,were included.descriptive statistics,narrative summation,and tabulation of the extracted data were performed.RESULTS A total of 19 publications satisfied the inclusion criteria:3 case series,15 case reports,and 1 conference abstract.They reported the outcomes of LAi antipsychotic use in 74 women and 77 pregnancies.The use of secondgeneration LAi antipsychotics was reported in the majority(n=47;61.0%)of pregnancies.First-generation LAi antipsychotics were administered during 30 pregnancies(39.0%).Most of the women(approximately 64%)had either satisfactory control of symptoms or no information about relapse,while approximately 12%of them had developed gestational diabetes mellitus.A minority of cases reported adverse outcomes such as stillbirth,spontaneous abortion,preterm birth,low birth weight,congenital anomalies,and neurological manifestations in newborns.However,there were no reports of negative long-term developmental outcomes.COnCLUSiOn Currently available data seem reassuring,but further well-designed studies are required to properly evaluate the risks and benefits of LAi antipsychotic use during pregnancy.

关键词： Antipsychotic agents Long-acting injectable pregnancy Outcome Review

ion-conducting Membranes Based on Bacterial Cellulose nanofibers Modified by poly(sodium acrylate-co-2-acrylamido-2-methylpropanesulfonic acid)

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of polymer Science 2024年第3期42卷 333-343,I0007页

作者： Elizaveta v.Batishcheva nikolay n.Smirnov natalya v.Bobrova Maria p.Sokolova Michael A.Smirnov institute of Macromolecular Compounds Russian Academy of SciencesBolshoy pr.31Saint Petersburg 199004Russia

Green method for preparation of ion-conducting membranes(iCM) based on bacterial cellulose nanofibers(CnF) modified by a copolymer of sodium acrylate and 2-acrylamido-2-methylpropanesulfonic acid was elaborated. FTiR and nMR data confirmed grafting of polyacrylate onto cellulose surface. Formation of porous structure of the iCM was controlled by SEM and AFM. The maximal ionic conductivity of the membranes reaches 1.5 and 3.1 mS·cm^(-1)(60 ℃ and 98% relative humidity) when they are saturated with water or H_2SO_4(1 mol·L^(-1)) electrolyte,respectively. prepared iCM was tested as a separator in a symmetrical supercapacitor with electrodes based on polyaniline hydrogel. The assembled cell demonstrate ability to operate at high current density up to 100 A·g^(-1) maintaining specific capacitance 165 F·g^(-1). Maximal specific capacitance of 289 F·g^(-1) was achieved at current density 1 A·g^(-1). Retaining of 90% of initial capacitance after 10000 of charge-discharge cycles proves high electrochemical stability of prepared iCM.

关键词： Bacterial cellulose ion conductivity porous membrane Supercapacitor

polariton lasing in Mie-resonant perovskite nanocavity

在线全文

学校读者我要写书评

暂无评论

Opto-Electronic Advances 2024年第4期7卷 27-42页

作者： Mikhail A.Masharin daria Khmelevskaia valeriy i.Kondratiev daria i.Markina Anton d.Utyushev dmitriy M.dolgintsev Alexey d.dmitriev vanik A.Shahnazaryan Anatoly p.pushkarev Furkan isik ivan v.iorsh ivan A.Shelykh Hilmi v.demir Anton K.Samusev Sergey v.Makarov UnAM-institute of Materials Science and nanotechnology National Nanotechnology Research CenterDepartment of Electrical and Electronics EngineeringDepartment of PhysicsBilkent UniversityAnkara 06800Turkey iTMO University School of Physics and EngineeringSt.Petersburg 197101Russia Abrikosov Center for Theoretical physics MIPTDolgoprudnyiMoscow Region 141701Russia LUMinOUS!Center of Excellence for Semiconductor Lighting and displays School of Electrical and Electronic EngineeringSchool of Physical and Mathematical SciencesSchool of Materials Science and EngineeringNanyang Technological UniversitySingapore 639798Singapore department of physics Engineering Physics and AstronomyQueen’s UniversityKingstonOntario K7L 3N6Canada Science institute University of IcelandDunhagi 3IS-107ReykjavikIceland Experimentelle physik 2 Technische Universität DortmundDortmund 44227Germany Qingdao innovation and development Center Harbin Engineering UniversityQingdao 266000China

deeply subwavelength lasers(or nanolasers)are highly demanded for compact on-chip bioimaging and sensing at the nanoscale.One of the main obstacles for the development of single-particle nanolasers with all three dimensions shorter than the emitting wavelength in the visible range is the high lasing thresholds and the resulting overheating.Here we ex-ploit exciton-polariton condensation and mirror-image Mie modes in a cuboid CspbBr3 nanoparticle to achieve coherent emission at the visible wavelength of around 0.53μm from its ultra-small(≈0.007μm3 or≈λ3/20)semiconductor nanocav-ity.The polaritonic nature of the emission from the nanocavity localized in all three dimensions is proven by direct com-parison with corresponding one-dimensional and two-dimensional waveguiding systems with similar material parameters.Such a deeply subwavelength nanolaser is enabled not only by the high values for exciton binding energy(≈35 mev),re-fractive index(>2.5 at low temperature),and luminescence quantum yield of CspbBr3,but also by the optimization of po-laritons condensation on the Mie resonances with quality factors improved by the metallic substrate.Moreover,the key parameters for optimal lasing conditions are intermode free spectral range and phonons spectrum in CspbBr3,which govern polaritons condensation path.Such chemically synthesized colloidal CspbBr3 nanolasers can be potentially de-posited on arbitrary surfaces,which makes them a versatile tool for integration with various on-chip systems.

关键词： nanolaser perovskite polariton Mie resonance exciton-polariton

Stability Analysis of dC Microgrid Clusters Based on Step-by-step System Matrix Building Algorithm

在线全文

学校读者我要写书评

暂无评论

Journal of Modern power Systems and Clean Energy 2024年第3期12卷 900-912页

作者： K.Jithin n.Mayadevi R.Hari Kumar v.p.Mini iEEE the department of Electrical Engineering College of Engineering Trivandrum APJ Abdul Kalam Technological University (APJAKTU) Senior Member

dC microgrids(dCMGs) are made up of a network of sources and loads that are connected by a number of power electronic converters(pECs). The increase in the number of these pECs instigates major concerns in system stability. While interconnecting the microgrids to form a cluster, the system stability must be ensured. This paper proposes a novel stepby-step system matrix building(SMB) algorithm to update the system matrix of an existing dCMG cluster when a new microgrid is added to the cluster through a distribution line. The stability of the individual dCMGs and the dCMG cluster is analyzed using the eigenvalue method. Further, the particle swarm optimization(pSO) algorithm is used to retune the controller gains if the newly formed cluster is not stable. The simulation of the dCMG cluster is carried out in MATLAB/Simulink environment to test the proposed algorithm. The results are also validated using the Op4510 real-time simulator(RTS).

关键词： power system stability Stability criteria Microgrids Transfer functions Clustering algorithms voltage control Eigenvalues and eigenfunctions