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Scaling laws governing the elastic properties of 3D graphenes

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Science china(Technological Sciences) 2024年第6期67卷 1748-1756页

作者： li {1. LU Guo YU HaoDong li MengLei zheng FaWei Centre for Quantum Physics Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement(MOE)School of PhysicsBeijing Institute of TechnologyBeijing100081China Beijing Key Lab of Nanophotonics&Ultrafine Optoelectronic Systems School of PhysicsBeijing Institute of TechnologyBeijing100081China Laboratory of Computational Physics Institute of Applied Physics and Computational MathematicsBeijing100088China department of Physics Capital Normal UniversityBeijing100048China

In this study,we comprehensively investigated the scaling law for elastic properties of three-dimensional honeycomb-like graphenes(3D graphenes)using hybrid neural network potential-based molecular dynamics simulations and theoretical *** elastic constants were obtained as functions of honeycomb hole size,denoted by the graphene wall length *** five independent elastic constants in the large-L limit are proportional to L^(-1..The associated coefficients are combinations of elastic constants of two-dimensional ***-order terms including L^(-2)and L^(-3)emerge for finite L *** have three origins,the distorted areas close to the joint lines of 3D graphenes,the variation in solid angles between graphene plates,and the bending distortion of graphene ***,the chirality becomes essential with decreasing L because the joint line structures are different between the armchair and zigzag-type 3D *** findings provide insights into the elastic properties of graphene-based superstructures and can be used for further studies on graphene-based materials.

关键词： scaling law neural network elastic properties 3D graphene

Analyzing the surface passivity effect of germanium oxynitride:a comprehensive approach through first principles simulation and interface state density

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Nuclear Science and Techniques 2024年第5期35卷 74-84页

作者： Sheng-Jie Du Xiu-Xia li Yang {1. Yuan-Yuan liu Ke Jia Zhong-zheng Tang Jian-Ping Cheng Zhi Deng Yu-Lan li zheng-Cao li Sha-Sha Lv College of Nuclear Science and Technology Joint Laboratory of Jinping Ultra‑Low Radiation Background Measurement of Ministry of Ecology and Environment Key Laboratory of Beam Technology of Ministry of Education Beijing Normal UniversityBeijing Normal UniversityBeijing 100875China Joint Research Center Nuctech Company LimitedBeijing 100084China department of Engineering Physics Key Laboratory of Particle&Radiation Imaging of Ministry of EducationTsinghua UniversityBeijing 100084China Key Laboratory of Advanced Materials(MOE) School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

High-purity germanium(HPGe)detectors,which are used for direct dark matter detection,have the advantages of a low threshold and excellent energy *** surface passivation of HPGe has become crucial for achieving an extremely low energy *** this study,first-principles simulations,passivation film preparation,and metal oxide semiconductor(MOS)capacitor characterization were combined to study surface *** calculations of the energy band structure of the -H,-OH,and -NH_(2) passivation groups on the surface of Ge were performed,and the interface state density and potential with five different passivation groups with N/O atomic ratios were accurately analyzed to obtain a stable surface *** on the theoretical calculation results,the surface passivation layers of the Ge_(2)ON_(2) film were prepared via magnetron sputtering in accordance with the optimum atomic ratio *** microstructure,C-V,and I-V electrical properties of the layers,and the passivation effect of the Al/Ge_(2)ON_(2)/Ge MOS were characterized to test the interface state *** mean interface state density obtained by the Terman method was 8.4×1.^(1.) cm^(-2) eV^(-1..The processing of germanium oxynitrogen passivation films is expected to be used in direct dark matter detection of the HPGe detector surface passivation technology to reduce the detector leakage currents.

关键词： Surface passivation High purity germanium detector Germanium nitrogen oxide Interface state density

Long non-coding RNA GATA6-AS1.is mediated by N6-methyladenosine methylation and inhibits the proliferation and metastasis of gastric cancer

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World Journal of Gastrointestinal Oncology 2024年第3期16卷 1019-1028页

作者： Jun-Jie Shen Min-Chang li Shao-Qi {1. Wen-ming Chen department of Oncology Jiangxi Hospital of Integrated Chinese and Western MedicineNanchang 330000Jiangxi ProvinceChina department of Hepatopancreatobi{1.ary Surgery Jiangxi Hospital of Integrated Chinese and Western MedicineNanchang 330000Jiangxi ProvinceChina Clinical Medical School Jining Medical UniversityJining 272000Shandong ProvinceChina department of Oncology Jining No.1 People’s HospitalJining 272011Shandong ProvinceChina

BACKGROUND Through experimental research on the biological function of GATA6-AS1.it was confirmed that GATA6-AS1.can inhibit the proliferation,invasion,and migration of gastric cancer cells,suggesting that GATA6-AS1.plays a role as an anti-oncogene in the occurrence and development of gastric *** experi-ments confirmed that the overexpression of fat mass and obesity-associated protein(FTO)inhibited the expression of GATA6-AS1.thereby promoting the occurrence and development of gastric *** To investigate the effects of GATA6-AS1.on the proliferation,invasion and migration of gastric cancer cells and its mechanism of *** We used bioinformatics methods to analyze the Cancer Genome Atlas(https://***/.The Cancer Genome Atlas)and download expression data for GATA6-AS1.in gastric cancer tissue and normal *** also constructed a GATA6-AS1.lentivirus overexpression vector which was transfected into gastric cancer cells to investigate its effects on proliferation,migration and invasion,and thereby clarify the expression of GATA6-AS1.in gastric cancer and its biological role in the genesis and development of gastric ***,we used a database(http://***/starbase2/)to analysis GATA6-AS1.whether by m6A methylation modify regulation and predict the methyltransferases that may methylate ***,RNA immunoprecipitation experiments confirmed that GATA6-AS1.was able to bind to the m6A methylation modification *** data allowed us to clarify the ability of m6A methylase to influence the action of GATA6-AS1.and its role in the occurrence and development of gastric *** Low expression levels of GATA6-AS1.were detected in gastric *** also determined the effects of GATA6-AS1.overexpression on the biological function of gastric cancer ***6-AS1.had strong binding ability with the m6A demethylase FTO,which was expressed at high levels in gastric cancer and negatively correlat

关键词： Long non-coding RNA GATA6-AS1 N6-methyladenine modification Fat mass and obesity-associated protein Gastric cancer

Estimating surface evapotranspiration using combined MODIS and CBERS-02 data

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Science china(Technological Sciences) 2005年第S2期48卷 145-160页

作者： XIN Xiaozhou1.2, liU Qinhuo1. TANG Yong1.3, {1. Guoliang1. GU Xingfa1. li Xiaowen1.2, zheng Hongsheng4 & CHEN Jiayi4 1. State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 1.01.1. china 2. Research Center for Remote Sensing and GIS, department of Geography, Beijing normal university, Beijing 1.0875, china 3. Graduate university of Chinese Academy of Sciences, Beijing 1.0039, china 4. department of Atmospheric Physics, Peking university, Beijing 1.0871. china 1. State Key Laboratory of Remote Sensing Science Institute of Remote Sensing Applications Chinese Academy of Sciences 100101 Beijing China2. Research Center for Remote Sensing and GIS Department of Geography Beijing Normal University 100875 Beijing China3. Graduate University of Chinese Academy of Sciences 100039 Beijing China4. Department of Atmospheric Physics Peking University 100871 Beijing China

Spatial scale error is one of the most serious problems in the estimates of land surface heat fluxes of sensible and latent from satellite-borne data such as MODIS 1.m resolution reflectance and emissive data. One of the feasible and economic ways to decrease the spatial scale error is to use high resolution land use class data together with the MODIS data. CBERS-02 data were used to produce land use class of Baiyangdian area, Hebei Province,{1. in the autumn of 2004. The area ratio of each class in MODIS pixel was calculated, and used to derive the heat fluxes of the mixed pixel. The results showed that the estimated heat fluxes of soil, sensible and latent have been changed remarkably after using the high resolution land class data. It could be concluded from the comparison between simulated and ground-measured fluxes as well as the theoretical analysis that high resolution land class data are useful to diminishing the scale error of heat fluxes estimated from low resolution satellite data.

关键词： surface evapotranspiration spatial scale error MODIS CBERS land class.

Size-controlled synthesis and near-infrared photothermal response of Cp^(*)Rh-based metalla[2]catenanes and rectangular metallamacrocycles

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Chinese Chemical Letters 2024年第6期35卷 337-343页

作者： Ying Zhao Yin-Hang Chai tian Chen Jie {1. Ting-Ting li Francisco Aznarez li-Long Dang Lu-Fang Ma College of Chemistry and Chemical Engineering Henan Key Laboratory of Function-Oriented Porous MaterialsLuoyang Normal UniversityLuoyang 471934China College of Chemistry Zhengzhou UniversityZhengzhou 450001China Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials State Key Laboratory of Molecular Engineering of PolymersDepartment of ChemistryFudan UniversityShanghai 200438China

A variety of research reports on novel supramolecular topologies have been published over the last ***,it is still a great challenge to tap into the inner functional properties of these ***,two tetranuclear metallamacrocycles 1.and 2 and four octonuclear[2]catenanes 3-6 were constructed successfully via a coordination-driven self-assembly strategy,by conscious design and use of the tetramethyl bidentate pyridine ligand L1.and the appropriate selection of six binuclear half-sandwich rhodium building units with different longitudinal *** complexes have been fully characterized by single crystal X-ray diffraction analysis and NMR ***,near-infrared photothermal studies of the obtained[2]catenanes reveal different photothermal response in solid and solution states,which may be attributed to a strong fluorescence quenching effect of the half-sandwich organometallic fragment and different conjugated effect of Cp^(*)Rh based building blocks in the interlocking *** photothermal conversion efficiencies of[2]catenanes 4-6 fall in the range 30.5%-1..5% *** contribution aims to play a key role in the experimental development of Cp^(*)-based photothermal materials.

关键词： Catenanes Photothermal materials Supramolecular topologies Half-sandwich fragment 3,3'-N-donor analogues

Multi-carbazole derivatives for two-photon absorption data storage:Synthesis,optical properties and theoretical calculation

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Science china Chemistry 2010年第4期53卷 884-890页

作者： li lin1, YANG JiaXiang1,2, WANG CaiXia1, HU ZhangJun1, tian YuPeng1,2, li Jing3, WANG ChuanKui3, li ming4, CHENG GuangHua4, TANG HuoHong5, HUANG WenHao5, TAO XuTang2 & JIANG MinHua2 1department of Chemistry, Anhui university, Hefei 230039, china 2State Key Laboratory of Crystal Materials, Institute of Crystal Materials of Shandong university, Jinan 250100, china 3department of Physics, Shandong normal university, Jinan 250014, china 4State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710119, china 5department of Precision Machinery and Precision Instrumentation, university of Science and Technology of china, Hefei 230026, china 1. department of Chemistry Anhui University Hefei 230039 China2. State Key Laboratory of Crystal Materials Institute of Crystal Materials of Shandong University Jinan 250100 China3. Department of Physics Shandong Normal University Jinan 250014 China4. State Key Laboratory of Transient Optics and Photonics Xi’an Institute of Optics and Precision Mechanics Chinese Academy of Sciences Xi’an 710119 China5. Department of Precision Machinery and Precision Instrumentation University of Science and Technology of China Hefei 230026 China

Two novel quadrupolar organic compounds, 3-(4-((E)-2-(9-butyl-9H-carbazol-6-yl) vinyl)styryl)-9-propyl-9H-carbazole (BCSPC) and 3-(3-(3-((1.)-2-(4-((E)-2-(3-(3,5-bis(9-butyl-9H-carbazol-6-yl)phenyl)-9-butyl-9H-carbazol-6-yl)vinyl)phenyl) vinyl)-9-butyl-9H-carbazol-6-yl)-5-(9-butyl-9H-carbazol-6-yl)phenyl)-9-butyl-9H-carbazole (BCPBC), with different conjugated arms, have been designed and synthesized. Their one-and two-photon absorption (TPA) and excited fluorescence properties have been experimentally investigated. The two-photon absorption cross-sections of two compounds were estimated by two-photon excited fluorescence technique using 200 fs, 76 MHz, Ti:sapphire laser, which are 22 and 1.4 GM for BCSPC and BCPBC, respectively. The optimal excitation wavelengths are 780 nm for both BCSPC and BCPBC. A data recording experiment proved the potential application of the materials.

关键词： initiator optical data storage fluorescence two-photon absorption theoretical calculation

Different sperm sources and parameters can influence intracytoplasmic sperm injection outcomes before embryo implantation

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Journal of Zhejiang university-Science B(Biomedicine & Biotechnology) 2012年第1期13卷 1-10页

作者： Yue-hong LU1.2, Hui-juan GAO1. Bai-jia li1. Ying-{1. zheng1. Ying-hui YE1. Yu-li QIAN1. Chen-{1. XU1. He-feng HUANG1. Fan JIN1.(1.5} of Reproductive Endocrinology, Key Laboratory of Reproductive Genetics, Ministry of Education, and Key Laboratory of Women’s Reproductive Health of Zhejiang Province, Women’s Hospital, School of Medicine, Zhejiang university, Hangzhou 31.006, china) (2department of Reproductive Health, Shaoxing Women and Children Hospital, Shaoxing 31.000, china) department of Reproductive Endocrinology Key Laboratory of Reproductive Genetics Ministry of Education and Key Laboratory of Women's Reproductive Health of Zhejiang Province Women's Hospital School of Medicine Zhejiang University Hangzhou 310006 China

To evaluate the effects of sperm with different parameters and sources on the outcomes of intracytoplasmic sperm injection (ICSI), 1.72 ICSI cycles were analyzed retrospectively. Groups 1.to 5 were composed of cycles using ejaculated sperm and were grouped according to sperm quantity, quality, and morphology into {1. (288 cycles), or mild (329 cycles), moderate (522 cycles), severe (332 cycles), and extremely severe (1.1.cycles) oligozoospermia and/or asthenozoospermia and/or teratozoospermia (OAT) groups. Group 6 was composed of 250 cycles using testicular or epididymal sperm, and Group 7 consisted of 80 cycles using frozen-thawed sperm. We found that fertilization rates were gradually reduced from Groups 1.to 6, and reached statistical difference in Groups 5 and 6 (Plity embryo rate was higher in Group 1.than in Groups 2, 3, 5, 6, and 7 (Plinical pregnancy, miscarriage, live-birth, premature birth, low birth weight, weeks of premature birth, average birth weight, or sex ratio for all seven groups (P>0.05). A total of nine cases of malformation were observed, with a malformation rate of 1.25% (9/71.). In conclusion, different sperm sources and parameters can affect ICSI outcomes before embryo implantation. A full assessment of offspring mal-formation will require further study using a larger sample size.

关键词： Intracytoplasmic sperm injection (ICSI)i Sperm Sperm source Sperm parameters Malformation

Atom-referenced and stabilized soliton microcomb

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Science china(Physics,Mechanics & Astronomy) 2024年第2期67卷 2-8页

作者： Rui Niu Shuai Wan tian-Peng Hua Wei-Qiang Wang {1.-Yu Wang Jin li Zhu-Bo Wang ming li Zhen Shen Yu Robert Sun Shui-ming Hu Brent Elittle Sai Tak Chu Wei Zhao Guang-Can Guo Chang-ling Zou Yun-Feng Xiao Wen-Fu Zhang Chun-Hua Dong State Key Laboratory of Transient Optics and Photonics Xi’an Institute of Optics and Precision MechanicsChinese Academy of SciencesXi’an 710119China CAS Key Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230026China CAS Center for Excellence in Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China university of Chinese Academy of Sciences Beijing 100049China department of Chemical Physics University of Science and Technology of ChinaHefei 230026China department of Physics and Materials Science City University of Hong KongHong Kong 999077China State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics School of PhysicsPeking UniversityBeijing 100871China

For the applications of the frequency comb in microresonators,it is essential to obtain a fully frequency-stabilized microcomb laser *** this study,we present a system for generating a fully atom-referenced stabilized soliton *** pump light around 1.60.48 nm is locked to an ultra-low-expansion(ULE)*** pump light is then frequency-doubled and referenced to the atomic transition *** repetition rate of the soliton microcomb is injection-locked to an atomic-clockstabilized radio frequency(RF)source,leading to mHz stabilization at 1.*** a result,all comb lines have been frequencystabilized based on the atomic reference and the ULE cavity,achieving a very high precision of approximately 1. Hz at 1.s,corresponding to the frequency stability of 9.5×1.^(-1.).Our approach provides a fully stabilized microcomb experiment scheme with no requirement of f-2f technique,which could be easily implemented and generalized to various photonic platforms,thus paving the way towards the ultraprecise optical sources for high precision spectroscopy.

关键词： microcavity frequency comb dissipative Kerr solitons fully stabilized microcomb

Botulinum toxin type A-targeted SPP1.contributes to neuropathic pain by the activation of microglia pyroptosis

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World Journal of Psychiatry 2024年第8期14卷 1254-1266页

作者： li-Ping Chen Xiao-Die Gui Wen-Di {1. Hou-ming Kan Jin-Zhao Huang Fu-Hai Ji department of Anesthesiology The First Affiliated Hospital of Soochow UniversitySuzhou 215006Jiangsu ProvinceChina department of Pain Xuzhou Medical UniversityXuzhou 221004Jiangsu ProvinceChina Faculty of Medicine Macao University of Science and TechnologyMacao 999078China

BACKGROUND Neuropathic pain(NP)is the primary symptom of various neurological *** with NP often experience mood disorders,particularly depression and anxiety,that can severely affect their normal *** cells are as-sociated with *** inflammatory responses,especially the secretion of large amounts of pro-inflammatory cytokines,ultimately lead to *** pyroptosis is a newly discovered form of inflammatory cell death associated with immune responses and inflammation-related diseases of the central nervous *** Two models,an in vitro {1.popolysaccharide(LPS)-stimulated microg{1.al cell model and a selective nerve injury model using BTX-A and SPP1.knockdown treatments,were *** proteins in the pyroptosis signa{1.ng pathway,NLRP3-GSDMD,were assessed using western blotting,real-time quantitative polymerase chain reaction,and *** factors[interleukin(IL)-6,IL-1.,and tumor necrosis factor(TNF)-α]were assessed using enzyme-{1.nked immuno-sorbent *** also evaluated microg{1.al cell pro{1.feration and ***,we measured pain sensation by assessing the delayed hind paw withdrawal latency using thermal *** The expression levels of ACS and GSDMD-N and the mRNA expression of TNF-α,IL-6,and IL-1.were enhanced in LPS-treated ***,SPP1.expression was also induced in LPS-treated ***,BTX-A inhibited SPP1.mRNA and protein expression in the LPS-treated ***,depletion of SPP1.or BTX-A inhibited cell viabi{1.ty and induced apoptosis in LPS-treated microg{1.a,whereas co-treatment with BTX-A enhanced the effect of SPP1.short hairpin(sh)RNA in LPS-treated ***,SPP1.depletion or BTX-A treatment reduced the levels of GSDMD-N,NLPRP3,and ASC and suppressed the production of inflammatory *** Notably,BTX-A therapy and SPP1.shRNA enhance microg{1.al pro{1.feration and apoptosis and inhibit microg{1.a

关键词： Botulinum toxin A SPP1 Microglia Pyroptosis Neuropathic pain