检索结果-南通市图书馆

Expanded Porphyrin Exhibiting Off-centered Out-of-Plane coordination to Dysprosium

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

ccS chemistry 2024年第7期6卷 1731-1738页

作者： Dmitry I.Nazarov Jorge Labella alexey V.Kuzmin Maxim A.Faraonov Evgenii N.Ivanov Salavat S.Khasanov Tomas Torres Mikhail K.Islyaikin Dmitri V.Konarev Federal Research center of Problems of chemical Physics and Medicinal chemistry RAS 142432 Chernogolovka Department of Organic chemistry Universidad Autonoma de Madrid28049 Madrid Institute of Solid-State Physics RAS 142432 Chernogolovka Research Institute of Macroheterocycles Ivanovo State University of Chemistry and Technology15300 Ivanovo G.A.Krestov Institute of Solution chemistry of the Russian Academy of Sciences 153045 Ivanovo Institute for Advanced Research in chemical Sciences Universidad Autonoma de Madrid28049 Madrid IMDEA-Nanociencia 28049 Madrid

The complexation of high-spin lanthanides to porphyrinoids is a powerful strategy for the development of advanced molecular *** this context,the use of expanded porphyrinoids remains elusive since their coordination chemistry is challenging to ***,taking inspiration from on-surface chemistry,we explored the coordination of Dy^(3+)to a six-membered porphyrinoid,namely,the hemihexaphyrazine ***,we observed the selective formation of a mono-nuclear off-centered,out-of-plane H_(2)Hhp-Dy^(3+)complex when performing the complexation under reductive *** this reaction,the oxidation state of the macrocycle did not *** X-ray diffraction analysis,we found that the coordination number of Dy in this complex was *** macrocycle cocrystallized with decamethylcobaltocene(cp_(2)^(*)co)molecules,giving rise to a wellordered solid-state packing,governed byπ-π*** a result of this organization,a small magnetic coupling between the neighboring molecules was *** in all,this work provides key insights into the coordination of magnetically active metals with expanded porphyrinoids,thus motivating the development of advanced spintronic devices.

关键词： porphyrins dysprosium macrocycle coordination chemistry magnetism

Author correction: ITO-free silicon-integrated perovskite electrochemical cell for light-emission and light-detection

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

Opto-Electronic Advances 2024年第3期7卷 50-50页

作者： Maria Baeva Dmitry Gets Artem Polushkin Aleksandr Vorobyov Aleksandr Goltaev Vladimir Neplokh alexey Mozharov Dmitry VKrasnikov Albert GNasibulin Ivan Mukhin Sergey Makarov Alferov University Khlopina 8/3St.Petersburg 194021Russia Department of Physics and Engineering ITMO UniversityLomonosova 9St.Petersburg 197101Russia Institute of Automation and control Processes(IAcP) Far Eastern Branch of Russian Academy of SciencesUlitsa Radio 5Vladivostok 690041Primorsky KraiRussia Peter the Great St.Petersburg Polytechnic University Polytechnicheskaya 29St.Petersburg 195251Russia Skolkovo Institute of Science and Technology Nobel 3Moscow 121205Russia Qingdao Innovation and Development center Harbin Engineering UniversityQingdao 266000China.

correction to:Opto-Electronic Advances https://***/10.29026/oea.2023.220154 published online 26 April 2023 After the publication of this article1,it was brought to our attention that calculations of the PeLEc device elec-troluminescent(EL)efficiency contained a mistake,leading to an inaccurate quantity *** device’s maxim-um EL efficiency constitutes not‘~120 klm/W’but‘4.3 lm/W’*** details are listed below.

关键词： value. perovskite listed

利用强子探针研究奇特原子核的点质子分布半径及强子探针效应

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

Science Bulletin 2024年第11期69卷 1647-1652页

作者：张寂潮孙保华 Isao Tanihata Rituparna Kanungo christoph Scheidenberger Satoru Terashima 王枫 Frederic Ameil Joel Atkinson Yassid Ayyad Soumya Bagchi Dolores cortina-Gil Iris Dillmann Alfredo Estradé alexey Evdokimov Fabio Farinon Hans Geissel Giulia Guastalla Rudolf Janik Satbir Kaur Ronja Knöbel Jan Kurcewicz Yury Litvinov Michele Marta Magdalena Mostazo Ivan Mukha chiara Nociforo Hooi Jin Ong Stephane Pietri Andrej Prochazka Branislav Sitar Peter Strmen Maya Takechi Junki Tanaka Jossitt Vargas Helmut Weick John Stuart Winfield School of Physics Beihang UniversityBeijing 100191China Research center for Nuclear Physics(RcNP) Osaka UniversityOsaka 567-0047Japan Astronomy and Physics Department Saint Mary’s UniversityHalifax B3H 3C3Canada TRIUMF Vancouver V6T 4A3Canada GSI Helmholtzzentrum für Schwerionenforschung Darmstadt D-64291Germany Justus-Liebig University Gießn 35392Germany Helmholtz Research Academy Hesse for FAIR(HFHF) GSI Helmholtz Center for Heavy Ion ResearchGießn 35392Germany Universidad de Santiago de compostela Santiago de Compostella E-15706Spain Department of Physics Indian Institute of Technology(Indian School of Mines)Dhanbad 826004India Faculty of Mathematics and Physics Comenius UniversityBratislava 84215Slovakia Department of Physics and Atmospheric Science Dalhousie UniversityHalifax B3H 4R2Canada

We report the charge-changing cross sections(σ_(cc))of 24 p-shell nuclides on both hydrogen and carbon at about 900A MeV,of which^(8,9)Li,^(10–12)Be,^(10,14,15)B,^(14,15,17–22)N and^(16)O on hydrogen and^(8,9)Li on carbon are for the first *** from the data set,we found a new and robust relationship between the scaling factor of the Glauber model calculations and the separation energies of the nuclei of interest on both *** allows us to deduce proton radii(R_p)for the first time from the cross sections on *** identical R_p values are deduced from both target data for the neutron-rich carbon isotopes;however,the R_p from the hydrogen target is systematically smaller in the neutron-rich nitrogen *** calls for further experimental and theoretical investigations.

关键词： Exotic nuclei Nuclear size Reaction cross section Glauber model Radioactive ion beam

Dual role of lipids for genome stability and pluripotency facilitates full potency of mouse embryonic stem cells

在线全文

学校读者我要写书评

暂无评论

蛋白质与细胞:英文版 2023年第8期14卷 591-602页

作者： Liangwen Zhong Miriam Gordillo Xingyi Wang Yiren Qin Yuanyuan Huang alexey Soshnev Ritu Kumar Gouri Nanjangud Daylon James c.David Allis Todd Evans Bryce carey Duancheng Wen Department of Reproductive Medicine Ronald O.Perelman and Claudia Cohen Center for Reproductive MedicineWeill Cornell MedicineNew YorkNY 10065USA Department of Surgery Weill Cornell Medical College1300 York AvenueNew YorkNY 10065USA Laboratory of chromatin Biology and Epigenetics The Rockefeller UniversityNew YorkNY 10065USA cold Spring Harbor Laboratory Cold Spring HarborNY 11724USA Molecular cytogenetics core.Memorial Sloan Kettering cancer center New YorkNY 10065USA Department of Neuroscience Developmental and Regenerative BiologyUniversity of Texas at San AntonioOne UTSA CircleSan AntonioTX 78249USA Gladstone Institutes 1650 Owens StSan FranciscoCA94158USA

While Mek1/2 and Gsk3βinhibition("2i")supports the maintenance of murine embryonic stem cells(Escs)in a homogenous naive state,prolonged culture in 2i results in aneuploidy and DNA hypomethylation that impairs developmental ***,2i fails to support derivation and culture of fully potent female *** we find that mouse EScs cultured in 2i/LIF supplemented with lipid-rich albumin(AlbuMAx)undergo pluripotency transition yet maintain genomic stability and full potency over long-term ***,lipids in AlbuMAx impact intracellular metabolism including nucleotide biosynthesis,lipid biogenesis,and TcA cycle intermediates,with enhanced expression of DNMT3s that prevent DNA *** induce a formative-like pluripotent state through direct stimulation of Erk2 phosphorylation,which also alleviates X chromosome loss in female ***,both male and female"all-ESc"mice can be generated from de novo derived EScs using AlbuMAXbased *** findings underscore the importance of lipids to pluripotency and link nutrient cues to genome integrity in early development.

关键词： mouse pluripotent stem cells lipids pluripotency transition genomic stability developmental potency nucleotide pool depletion 2i medium X chromosome loss femaleall-Esc mice

Anti-aging effects of chlorpropamide depend on mitochondrial complex-Ⅱ and the production of mitochondrial reactive oxygen species

在线全文

学校读者我要写书评

暂无评论

Acta Pharmaceutica Sinica B 2022年第2期12卷 665-677页

作者： Zhifan Mao Wenwen Liu Yunyuan Huang Tianyue Sun Keting Bao Jiali Feng alexey Moskalev Zelan Hu Jian Li State Key Laboratory of Bioreactor Engineering Frontiers Science Center for Materiobiology and Dynamic ChemistryShanghai Key Laboratory of New Drug DesignEast China University of Science and TechnologyShanghai 200237China Laboratory of Geroprotective and Radioprotective Technologies Institute of BiologyKomi Science CentreUral BranchRussian Academy of SciencesSyktyvkar 167982Russia Yunnan Key Laboratory of Screening and Research on Anti-pathogenic Plant Resources from West Yunnan College of PharmacyDali UniversityDali 671000China clinical Medicine Scientific and Technical Innovation center Shanghai Tenth People’s HospitalTongji University School of MedicineShanghai 200092China

Sulfonylureas are widely used oral anti-diabetic ***,its long-term usage effects on patients’lifespan remain controversial,with no reports of influence on animal ***,the anti-aging effects of chlorpropamide along with glimepiride,glibenclamide,and tolbutamide were studied with special emphasis on the interaction of chlorpropamide with mitochondrial ATP-sensitive K+(mito K-ATP)channels and mitochondrial complex *** delayed aging in caenorhabditis elegans,human lung fibroblast MRc-5 cells and reduced doxorubicin-induced senescence in both MRc-5 cells and *** addition,the mitochondrial membrane potential and ATP levels were significantly increased in chlorpropamide-treated worms,which is consistent with the function of its reported targets,mito K-ATP *** levels of mitochondrial reactive oxygen species(mt ROS)were observed in chlorpropamide-treated ***,the lifespan extension by chlorpropamide required complex II and increased mt ROS levels,indicating that chlorpropamide acts on complex II directly or indirectly via mito K-ATP to increase the production of mt ROS as a pro-longevity *** study provides mechanistic insight into the anti-aging effects of sulfonylureas in ***.

关键词： Sulfonylureas chlorpropamide Anti-aging Mitochondrial complexⅡ Mitochondrial reactive oxygen species ATP sensitive potassium channels Senescence Succinate dehydrogenase

在线全文

学校读者我要写书评

暂无评论

未来主义的交通工具设计,让人眼前一亮

工业设计 2024年第5期 22-22页

作者： Maks chaschin alexey Blinkov Blinkova Design Alex Braverman Vladimir Plekhanov Roman Mishchenko Vladislav chikin alexey Zalata Эдуард Тян Irina Ivanova Nikita Pavlov 2050 Lab

来源:https://***/galleries/4b3aca9bfeeca513e932e2a1c0eb92a5?favorite=true这款未来主义交通工具从乘客体验出发,遵循人机工程学设计理念,让乘客即使在城市运营的高峰时段也能感到愉快。与上一代的设计相比,该交通工具重新布置了入... 详细信息

来源:https://***/galleries/4b3aca9bfeeca513e932e2a1c0eb92a5?favorite=true这款未来主义交通工具从乘客体验出发,遵循人机工程学设计理念,让乘客即使在城市运营的高峰时段也能感到愉快。与上一代的设计相比,该交通工具重新布置了入口处的柱子,将过道增加了100毫米,座椅加宽了30毫米,使乘坐舱变得更加宽敞。对乘客来说,即便穿着厚厚的冬装,也能获得舒适的乘坐体验。设计团队考虑了不同乘客的旅行场景,例如有孩子的乘客、行李很多的旅客或者残疾人等,在设计中兼顾每一类人群的便利性。导航系统基于人性化理念设计,让视障人士可以感知入口照明的线条。乘坐舱内的材料亲近自然,改进后的座椅面料也变得更加耐用和舒适。

关键词：人性化理念视障人士人机工程学城市运营未来主义交通工具设计导航系统亲近自然

维普期刊数据库博看期刊

Magnetic field-induced non-linear transport in HfTe5

在线全文

学校读者我要写书评

暂无评论

National Science Review 2022年第10期9卷 98-104页

作者： cheng Zhang Jinshan Yang Zhongbo Yan Xiang Yuan Yanwen Liu Minhao Zhao alexey Suslov Jinglei Zhang Li Pi Zhong Wang Faxian Xiu State Key Laboratory of Surface Physics and Institute for Nanoelectronic Devices and Quantum computing Fudan University State Key Laboratory of Surface Physics and Department of Physics Fudan University Zhangjiang Fudan International Innovation center Fudan University State Key Laboratory of High-Performance ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences School of Physics Sun Yat-Sen University State Key Laboratory of Precision Spectroscopy East China Normal University National High Magnetic Field Laboratory Anhui Province Key Laboratory of condensed Matter Physics at Extreme conditions High Magnetic Field Laboratory of the Chinese Academy of Sciences Institute for Advanced Study Tsinghua University collaborative Innovation center of Quantum Matter Shanghai Qi Zhi Institute 12. Shanghai Research center for Quantum Sciences

The interplay of electron correlations and topological phases gives rise to various exotic phenomena including fractionalization,excitonic instability and axionic *** discovered transition-metal pentatellurides can reach the ultra-quantum limit in low magnetic fields and serve as good candidates for achieving such a ***,we report evidence of density wave and metal-insulator transition in HfTe5induced by intense magnetic *** the non-linear transport technique,we detect a distinct non-linear conduction behavior in the longitudinal resistivity within the a-c plane,corresponding to the formation of a density wave induced by magnetic *** high fields,the onset of non-linear conduction in the Hall resistivity indicates an impurity-pinned magnetic freeze-out as the possible origin of the insulating *** frozen electrons can be gradually reactivated into mobile states above a threshold of electric *** experimental evidence calls for further investigation into the underlying mechanism of the bulk quantum Hall effect and field-induced phase transitions in pentatellurides.

关键词： topological state quantum transport electron correlation density wave non-linear transport

Influence of polyolefin fibers on the strength and deformability properties of road pavement concrete

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 Traffic and Transportation Engineering(English Edition) 2019年第4期6卷 407-417页

作者： Olga Smirnova alexey Kharitonov Yuriy Belentsov Department of constructing Mining Enterprises and Underground Structures Saint-Petersburg Mining UniversitySaint Petersburg 199106Russia Department of Technology of Building Materials and Metrology Saint-Petersburg State University of Architecture and Civil EngineeringSaint Petersburg 190005Russia Department of Building Materials and Technologies Emperor Alexander I St.Petersburg State Transport UniversitySaint Petersburg 190031Russia

Influence of the type and quantity of polyolefin fibers on the strength properties(compression strength, tensile strength in bending, strength in uniaxial tension), the deformation properties(elastic modulus, Poisson’s coefficient) and the abrasion resistance of cement concrete with water-to-cement ratio within 0.31 e0.55 were stated in the *** ways of fibers introduction into fresh concrete were investigated. It was shown that the fibers introduction method and procedure of mixing are the ways to improve the fibers uniform distribution in fresh concrete. The increase of the bending tensile strength and the uniaxial tensile strength of concrete with fibers reinforcement in comparison with the reference concrete was observed with the water-to-cement ratio decrease. The increase of uniaxial tensile strength at age of 28 days for concrete with macrofibers in amount of4.5 kg/m^3 was 23% and 29%;for macrofibers in quantity of 3 kg/m^3 was 19% and 26% with water-cement ratio equal to 0.49 and 0.31, respectively. The maximum reduction of abrasion in the range of 7.5%e10% was observed in concrete with water-to-cement ratio within0.44 e0.55 for all investigated types of fibers. The influence of fibers on the concrete abrasion with lower W/c ratio was negligible. The results can contribute to the rational use of modified polyolefin fibers in road pavement concrete.

关键词： Road pavement concrete Polyolefin fibers Strength Elastic modulus Abrasion Water-to-cement ratio

Larch growth across thermal and moisture gradients in the Siberian Mountains

在线全文

学校读者我要写书评

暂无评论

Journal of Mountain Science 2023年第1期20卷 101-114页

作者： KHARUK Viacheslav I. PETROV Il'ya A. GOLYUKOV alexey S. DVINSKAYA Maria L. IM Sergei T. SHUSHPANOV Alexander S. Sukachev Institute of Forest Federal Scientific CenterRussian Academy of ScienceSiberian BranchAcademgorodok 50/28Krasnoyarsk660036Russia Siberian Federal University Svobodny str.79Krasnoyarsk660041Russia Reshetnev Siberian State University of Science and Technology Krasnoyarsky rabochy str.31Krasnoyarsk660014Russia Tomsk State University Lenina str.36Tomsk634050Russia

climate-driven changes in the thermal and moisture regimes may variously influence different tree species growth and *** hypothesize that drought resistant Siberian larch(Larix sibirica Ledeb.)and precipitation-sensitive Siberian pine(Pinus sibirica Du Tour)responded differently to climate change along the elevational thermal and precipitation *** studied the influence of air temperature,precipitation,soil moisture,and atmospheric drought(indicated by the drought index SPEI)on larch and pine growth along the southward megaslope of the West Sayan *** found that since 2000 climate change resulted in increasing larch and pine radial growth index(GI)(c.1.5–3times)within treeline(2000–2300 m)and timberline(1900–2000 m)ecotones,*** high precipitation *** the forest-steppe ecotone(1100–1200 m)in which *** is the only species,larch GI stagnated or even *** total forested area increased since 2000 up to+50%in the high elevations,whereas in the low elevations(changes were *** treeline and timberline,trees’GI was stimulated by summer ***,temperature increase in early spring reduces GI due to living tissue activation followed by tissue damage by *** forest-steppe,larch radial growth was mostly dependent on soil *** shifted dependence on moisture to the early dates of the growing *** droughts decreased GI within forest-steppe as well as within treeline,whereas the drought influence on both species within highlands was *** forest-steppe seedlings establishment was poor,whereas it was successful within treeline and *** climate change leads to stagnation or even decrease in Larix sibirica growth in the southern lowland *** combination with poor seedlings establishment,reduced growth threatens the transformation of open lowland forests into forest-steppe and steppe ***,in the highlands warming

关键词： Larch Siberian pine climate influence on tree radial growth Mountain forests Treeline Timberline Foreststeppe Drought stress Moisture stress