检索结果-南通市图书馆

Phylogenetic position of Dysteria derouxi(Ciliophora :Phyllo - pharyngea : Dysteriida)inferred from the small subunit ribosomal RNA gene sequence

在线全文

学校读者我要写书评

暂无评论

Acta Oceanologica Sinica 2006年第1期25卷 119-126页

作者： li lifang SONG Weibo Laboratory of Protozoology Key Laboratory of Mariculture of Ministry of Education Ocean University of China Qingdao 266003 China

The complete small subunit rRNA （SSrRNA） gene sequence of a marine ciliate, Dysteria derouxi Gong and Song, 2004, was determined to be of 1 708 nucleotides. The phylogenetic position of this species within the class Phyllopharyngea was deduced using distance matrix, maximum parsimony and maximum likelihood methods. Dysteria derouxi, together with other available ciliates of the class Phyllopharyngea, forms a monophyletic clade with strong bootstrap support in the distance matrix, maximum parsimony and likelihood tree construction methods, while the dysterids are, as a monophyletic group, phylogenetically close to the clade of chlamydodontids [values of 100% LS（least-squares）, 100% NJ（neighabor-joining）]. In addition, the trees indicate that dysteriids may be a higher or specialized group within the class, which corresponds well to the morphology and infraciliature.

关键词： SSrRNA phylogenetic position Dysteria derouxi Phyllopharyngea ciliate

Introduction to holographic superconductor models

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2015年第6期58卷 1-46页

作者： CAI RongGen li li li lifang YANG RunQiu State Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of Sciences Crete Center for Theoretical Physics Department of PhysicsUniversity of Crete State Key Laboratory of Space Weather Center for Space Science and Applied ResearchChinese Academy of Sciences

In the last years it has been shown that some properties of strongly coupled superconductors can be potentially described by classical general relativity living in one higher dimension,which is known as holographic *** paper gives a quick and introductory overview of some holographic superconductor models with s-wave,p-wave and d-wave orders in the literature from point of view of bottom-up,and summarizes some basic properties of these holographic models in various *** competition and coexistence of these superconductivity orders are also studied in these superconductor models.

关键词： holographic duality superconductivity classical theories of gravity conformal field theory

Interfacial Self-assembly Approach of Plasmonic Nanostructures for Efficient SERS and Recyclable Catalysts Applications

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2017年第1期33卷 135-142页

作者： GUO Pengzhen HUANG Xiqiang li lifang ZHAO Sheng Department of Physics Harbin Institute of Technology Harbin 150080 P. R. China Research Center of Basic Space Science Harbin Institute of Technology Harbin 150080 P. R. China National Key Laboratory of Tunable Laser Technology Harbin Institute of Technology Harbin 150080 P. R. China

We reported on a simple and general interfacial self-assembly approach to fabricate plasmonic superlattice sheets in extremely large scale, which can be up to ca. 50 cm2, based on different types of noble metal nanoparticles. The self-assembled nanofilms exhibit exciting plasmonic properties with mirror-like reflectance, represented by vivid colour changes. More important, such superlattice sheets can be easily transferred and explored as highly efficient shape-dependent surface enhanced raman scattering（SERS） substrates, as well as flexible and recyclable shape-dependent substrate-supporting nanocatalysts sheets. The conversion of 4-NPH were kept as high as 95% after the nanocatalyst sheets were used for six cycles. The interfacial self-assembly method can be exploited for develop- ment of optical and nanocatalysts devices such as flexible colour filters, molecular sensors and flexible plasmonic nanofilms.

关键词： Plasmonic Interfacial self-assembly Surface Enhanced Raman Scattering(SERS) Recyclable nanocata-lysts Noble nanoparticle

Quenched Galaxies are Important Host Candidates of Binary Black Hole and Binary Neutron Star Mergers

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Research in Astronomy and Astrophysics 2023年第9期23卷 29-44页

作者： Xiaobo Gong Feng-Hui Zhang Xiaoyu Kang lifang li Yunnan Observatories Chinese Academy of SciencesKunming 650216China Key Laboratory for the Structure and Evolution of Celestial Objects Chinese Academy of SciencesKunming 650216China University of Chinese Academy of Sciences Beijing 100049China International Centre of Supernovae Yunnan Key LaboratoryKunming 650216China

In this work,we present the probabilities of mergers of binary black holes(BBHs)and binary neutron stars(BNSs)as functions of stellar mass,metallicity,specific star formation rate(sSFR),and age for galaxies with redshift z≤*** the binary-star evolution(BSE)code and some fitting formulae,we construct a phenomenological model of cosmic gravitational wave(GW)merger *** using the Bayesian analysis method and the observations from Advanced liGO and Virgo,we obtain the relevant parameters of the phenomenological model(such as the maximum black hole mass is 93_(-22)^(+73)M_(⊙)).Combining the above model results with the galaxy catalog given by the EMERGE empirical galaxy model,we find the normalized probability of occurrence of a merger event varying with log10 sSFR yr(-1)for galaxies with z≤0.1 is different from that in previous studies,that is,two peaks exist in this work while there is only one peak(log_(10)(sSFR/yr^(−1))=−10)in the previous *** sSFR value corresponding to the new peak is log_(10)(sSFR/yr^(−1))=−12 and in line with the value(log_(10)(sSFR yr^-1)=-12.65_(-0.66)^(+0.44)of NGC 4493,the host galaxy of BNS merger event *** new peak is caused by today’s quenched galaxies,which give a large contribution to the total SFR at high redshift in the EMERGE empirical galaxy ***,we find that the BNS mergers are most likely detected in galaxies with age∼11 Gyr,which is greater than previous results(6−8Gyr)and close to the age of NGC 4993,13.2_(-0.9)^(+0.5)Gyr.

关键词： stars black holes–stars massive–gravitational waves–galaxies evolution

在线全文

学校读者我要写书评

暂无评论

局部挤压成形在铝板棱线圆角上的应用

模具工业 2025年第1期51卷 39-42页

作者：李丽芳谢越鸣蔡惠钦上汽通用汽车有限公司整车制造工程上海201206

针对铝板汽车外覆盖件棱线小圆角成形时易出现模糊和开裂的问题,通过在简易模上采用局部挤压成形工艺得到尖锐的圆角,介绍了局部挤压成形工艺的原理,并与传统冲压成形工艺进行了对比分析;还设计了简易拉深模,并截取了铝前门外板的一段... 详细信息

针对铝板汽车外覆盖件棱线小圆角成形时易出现模糊和开裂的问题,通过在简易模上采用局部挤压成形工艺得到尖锐的圆角,介绍了局部挤压成形工艺的原理,并与传统冲压成形工艺进行了对比分析;还设计了简易拉深模,并截取了铝前门外板的一段在模具上进行挤压试验。研究表明,铝板棱线通过局部挤压成形可得到R2 mm的小圆角,且通过显微观察零件表面未出现开裂现象,为汽车外覆盖件使用轻量化材料的同时实现美观的锐棱设计提供了参考。

关键词：铝板棱线挤压成形补偿量

Multicolor emission from lanthanide ions doped lead-free Cs_(3)Sb_(2)Cl_(9) perovskite nanocrystals

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2024年第5期42卷 940-946,I0005页

作者： He Shao lifang li Xiufeng Wu lin Xu Biao Dong Donglei Zhou Xue Bai Hongwei Song State Key Laboratory of Organic Electronics and Information Displays&Institute of Advanced Materials College of Materials Science and EngineeringNanjing University of Posts&TelecommunicationsNanjing210023China State Key Laboratory of Integrated Optoelectronics College of Electronic Science and Engineering Jilin UniversityChangchun130012China

The toxicity of lead ions has become the severe challenge for the all-inorganic lead halide p erovskite materials,although some works have rep orted the lead-free perovskite nanocrystals(NCs),the photoluminescence quantum yield(PLQY)of these materials is still ***,because the halogen ions can be easily exchanged,the controllable multicolor emission in perovskite NCs is difficult to realize in current *** this work,we introduced lanthanide ions into lead-free Cs_(3)Sb_(2)Cl_(9) perovskite *** from the energy transfer between Cs_(3)Sb_(2)Cl_(9) perovskite NC host and lanthanide ions,the multicolor emission was *** on controlling the doping concentration of Tb^(3+)and Eu^(3+)ions,the white light emission under UV excitation would be turned easily in the Tb^(3+)/Eu^(3+)codoped *** addition,efficient energy transfer from perovskite NCs to Tb^(3+)or Eu^(3+)ions is beneficial to improving the optical properties of lead-free perovskite NCs,resulting in maximum PLQYs of red,green and white light emission of 22.6%,19.7%and 28.5%,***,a white light emitting device(WLED)was fabricated with a power efficiency of 18.5 lm/W,which presents the Commission Internationale de l'Eclairage(CIE)of(0.33,0.35).

关键词： Perovskite nanocrystals Lead free Lanthanide ions Energy transfer White light emitting device Rare earths

Invasion by exogenous RNA:cellular defense strategies and implications for RNA inference

在线全文

学校读者我要写书评

暂无评论

Marine life Science & Technology 2023年第4期5卷 573-584页

作者： Danxu Tang Yan liu Chundi Wang lifang li Saleh AAl‑Farraj Xiao Chen Ying Yan Laboratory of Marine Protozoan Biodiversity and Evolution Marine CollegeShandong UniversityWeihai 264209China Key Laboratory of Evolution and Marine Biodiversity(Ministry of Education)and Institute of Evolution and Marine Biodiversity Ocean University of ChinaQingdao 266003China Zoology Department College of ScienceKing Saud University11451 RiyadhSaudi Arabia Suzhou Research Institute Shandong UniversitySuzhou 215123China

Exogenous RNA poses a continuous threat to genome stability and integrity across various *** evidence reveals complex mechanisms underlying the cellular response to exogenous RNA,including endo-lysosomal degradation,RNA-dependent repression and innate immune *** a variety of mechanisms,the natural anti-sense RNAdependent defensive strategy has been utilized both as a powerful gene manipulation tool and gene therapy strategy named RNA-interference(RNAi).To optimize the efficiency of RNAi silencing,a comprehensive understanding of the whole life cycle of exogenous RNA,from cellular entry to its decay,is *** this paper,we review recent progress in comprehending the recognition and elimination of foreign RNA by cells,focusing on cellular entrance,intracellular transportation,and immune-inflammatory *** leveraging these insights,we highlight the potential implications of these insights for advancing RNA interference efficiency,underscore the need for future studies to elucidate the pathways and fates of various exogenous RNA forms,and provide foundational information for more efficient RNA delivery methods in both genetic manipulation and therapy in different organisms.

关键词： Endocytosis Exogenous RNA Innate immune response RNA inference

Human RNA Modifications Disease Database(HRMDD):A web resource for the molecular and clinical landscape of RNA modifications in human diseases

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Genes & Diseases 2023年第4期10卷 1157-1160页

作者： Jianjian Wang lifang li Hanxiao Zhou Shuang li liting Tian Xinyue Wang Danyang li Yue Yin Shangwei Ning lihua Wang Department of Neurology The Second Affiliated Hospital of Harbin Medical UniversityHarbinHeilongjiang 150081China College of Bioinformatics Science and Technology Harbin Medical UniversityHarbinHeilongjiang 150081China

Here,we developed a comprehensive web-searchable database,designated as Human RNA Modifications Disease Database(HRMDD,http://***/HRMDD/***).RNA modification(RM)is an important mechanism of epigenetic *** the evolution of both experimental technologies and computational methods,major progress has been made in identifying the genomic locations and distributions of various RM types throughout the transcriptome.^(1)

关键词： web Database Human

Glucose-6-phosphate dehydrogenase neutralizes stresses by supporting reductive glutamine metabolism and AMPK activation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Signal Transduction and Targeted Therapy 2021年第3期6卷 580-583页

作者： Benfu Zhong Dewei Jiang Yang Hong lifang li li Qiu Ronghui Yang Xiaohan Jin Yawen Song Ceshi Chen Binghui li Department of Cancer Cell Biology and National Clinical Research Center for Cancer Tianjin Medical University Cancer Institute and HospitalTianjin 300060P.R.China Department of Biochemistry and Molecular Biology Capital Medical UniversityBeijing 100069P.R.China Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences and Yunnan Province Kunming Institute of ZoologyChinese Academy of SciencesKunming 650223China

Dear Editor,Glucose-6-phosphate dehydrogenase(G6PD)is the rate-limiting enzyme in the oxidative pentose phosphate pathway(oxPPP)that can generate cytosolic NADPH(Fig.1a)for biosynthesis and oxidative ***,we reveal a previously unidentified function of ***,even the natural G6PD deficiency-associated mutant without the activity to maintain the normal oxPPP,can antagonize the stresses by supporting the reductive glutamine metabolism and AMPK activation,independently of the NADPH generation by the oxPPP.

关键词： supporting reductive oxidative