检索结果-南通市图书馆

Chinese Journal of Polymer Science 2024年第8期42卷 1185-1197页

作者： Zhi-Ying Zhao Hao Jiang xiao-dong li Xu-dong Zhang Xing Su Mei-Shuai Zou School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China

The packaging materials with cushioning performance are used to prevent the internal contents from being damaged by the impact and vibration of external *** polyurethane microcellular elastomers(PUMEs)can absorb energy through cell collapse and molecular chain *** this study,PUMEs with different densities were investigated by scanning electron microscopy,dynamic mechanical analysis and dynamic compression *** exhibited significant im pact resistance and the maximum peak stress attenuation ratio reached 73.33%.The protective equipment was made by PUME with the optimal density of 600 kg/m^(3),and then the acceleration sensing device installed with the same protective equipment fell from a height of 3,5 and 10 m to evaluate the energy-absorbing property and reusability of *** results showed that PUMEs equipment reduced the peak acceleration of the device by 93.84%,with a maximum deviation of 9%between actual test and simulation,and shortened the impact time of first landing by 57.39%.In addition,the equipment PUMEs equipment could effectively reduce the stress on the protected items.

关键词： Polyurethane microcellular elastomer Impact velocity Stress attenuation ratio Impact resistance

Improving constraint onΩ_(m)from SDSS using marked correlation functions

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2024年第8期67卷 207-224页

作者： limin Lai Jiacheng Ding xiaolin Luo Yizhao Yang Zihan Wang Keshi liu Guanfu liu Xin Wang Yi Zheng Zhaoyu li Le Zhang xiao-dong li School of Physics and Astronomy Sun Yat-sen University Zhuhai CampusZhuhai 519082China Department of Astronomy Shanghai Jiao Tong UniversityShanghai 200240China Department of Astronomy Tsinghua UniversityBeijing 100084China CSST Science Center for the Guangdong-Hong Kong-Macao Greater Bay Area SYSUZhuhai 519082China Peng Cheng Laboratory Shenzhen 518000China

Large-scale structure(LSS)surveys will increasingly provide stringent constraints on our cosmological ***,the density-marked correlation function(MCF)has been introduced,offering an easily computable density-correlation *** have demonstrated that MCFs offer additional,independent constraints on cosmological models beyond the standard two-point correlation(2PCF).In this study,we apply MCFs for the first time to SDSS CMASS data,aiming to investigate the statistical information regarding clustering and anisotropy properties in the Universe and assess the performance of various weighting schemes in MCFs,and finally obtain constraints onΩ_(m).Upon analyzing the CMASS data,we observe that,by combining different weights(α=[-0.2,0,0.2,0.6]),the MCFs provide a tight and independent constraint on the cosmological parameterΩ_(m),yieldingΩ_(m)=0.293±0.006 at the 1σlevel,which represents a significant reduction in the statistical error by a factor of 3.4 compared to that from *** constraint is consistent with recent findings from the small-scale clustering of BOSS galaxies(Zhai et ***.J.948,99(2023))within the 1σ***,we also find that our estimate is lower than the Planck measurements by about 2.6σ,indicating the potential presence of new physics beyond the standard cosmological model if all the systematics are fully *** method outlined in this study can be extended to other surveys and datasets,allowing for the constraint of other cosmological ***,it serves as a valuable tool for forthcoming emulator analysis on the Chinese Space Station Telescope(CSST).

关键词： large scale structure of universe dark energy cosmological parameters marked weighted correlation function

Regulated reaction pathway of CO2 photoreduction into CH4 by metal atom pair sites

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2024年第9期43卷 4620-4627页

作者： dong-Po He Guang-Bing Huang Jun Hu Yang Wu xiao-dong li Qing-Xia Chen Shan Zhu Wen-Sheng Yan Jun-Fa Zhu Yang Pan Xing-Chen Jiao Key Laboratory of Synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringJiangnan University Hefei National Research Center for Physical Sciences at Microscale National Synchrotron Radiation LaboratoryUniversity of Science and Technology of China Max Planck Institute of Microstructure Physics State Grid Anhui Electric Power Research Institute

The carbon dioxide （CO2） reduction process involves complex protonation, making the resulting product often unpredictable. To achieve the desired product, it is crucial to manipulate the reaction steps. Herein, we build the metal atom pair sites for selective CO2photoreduction into methane. As a prototype, Ni atom pair sites loaded on the Mo S2nanosheets were synthesized and verified by highresolution transmission electron microscopy （HRTEM）,X-ray photoelectron spectroscopy （XPS） and X-rayabsorption near edge structure spectra （XANES）. In-situ Fourier transform infrared spectroscopy （FTIR） monitors the*CHO group, a crucial intermediate in CH4production,during CO2photoreduction on the Ni-Mo S2nanosheets,whereas this monitoring is not observed for the Mo S2nanosheets. Also, theoretical calculations disclose that over the Ni-Mo S2nanosheet slab, the formation energy of*CHO intermediates is determined to be lower （0.585 e V） than the desorption energy of*CO intermediates for CO production（0.64 e V）, implying the higher selectivity of CH4production. Accordingly, the Ni-Mo S2nanosheets demonstrate a methane formation rate of 27.21μmol·g-1·h-1, coupled with an impressive electron selectivity of 94.2%.

关键词： Nanosheets

Vasculogenic mimicry:a pivotal mechanism contributing to drug resistance in antiangiogenic therapy

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Oncology and Translational Medicine 2024年第3期10卷 119-125页

作者： Shu-Min Dang Dan Yang Zhi-Yi Wang Xiang-Ming Ding Xiu-ling li De-Yu li dong-xiao li Department of Gastroenterology People’s Hospital of Zhengzhou UniversityHenan Provincial People’s HospitalZhengzhouHenanChina Henan Key Medical Laboratory for Molecular Immunology of Digestive Diseases Henan Provincial People’s HospitalZhengzhouHenanChina Department of Hepatobiliary Surgery People’s Hospital of Zhengzhou UniversityHenan Provincial People’s HospitalZhengzhouHenanChina Henan Provincial Key Medical Laboratory for Hepatobiliary and Pancreatic Diseases Henan Provincial People’s HospitalZhengzhouHenanChina

The growth of solid tumors relies on establishing a robust blood supply,with angiogenesis playing a key role in this intricate *** on this understanding,therapeutic strategies targeting tumor angiogenesis have been ***,the clinical effectiveness of antiangiogenic therapy(AAT)in treating tumors has not lived up to *** recent years,vasculogenic mimicry(VM)has attracted increasing attention from the academic community as a longstanding but often overlooked mechanism of nonangiogenic tumor *** the tumor microenvironment,neoplastic cells can autonomously form vessel-like structures,creating a blood supply that does not rely on endothelial *** phenomenon,known as VM,is a critical marker of aggressive tumors and may play a significant role in conferring resistance to *** this review,we thoroughly examine the evidence,clinical characteristics,and mechanisms of VM across various tumor types and explore its potential role and importance in resistance to AAT and the development of new antitumor therapies.

关键词： Vasculogenic mimicry Antiangiogenic therapy Angiogenesis Tumor microenvironment Immunotherapy

CuO/CeO_(2) p−n异质结光催化降解亚甲基蓝的性能及机理

在线全文

学校读者我要写书评

暂无评论

Transactions of Nonferrous Metals Society of China 2024年第6期34卷 1951-1964页

作者：陈欢欢罗绍华雷雪飞滕飞纪献兵李晓东东北大学材料科学与工程学院沈阳110819 东北大学秦皇岛分校河北省电介质与电解质功能材料重点实验室秦皇岛066004 河北环境工程学院环境工程系秦皇岛066102

采用简单微波回流法和均相沉淀技术合成CuO/CeO_(2) p−n异质结复合材料,并对其光催化降解亚甲基蓝溶液的性能进行研究。CuO/CeO_(2)异质结复合材料的降解效率明显强于CeO_(2)。结果表明,以Cu/Ce摩尔比为1/3制备的复合材料(1/3 Cu/Ce)的... 详细信息

采用简单微波回流法和均相沉淀技术合成CuO/CeO_(2) p−n异质结复合材料,并对其光催化降解亚甲基蓝溶液的性能进行研究。CuO/CeO_(2)异质结复合材料的降解效率明显强于CeO_(2)。结果表明,以Cu/Ce摩尔比为1/3制备的复合材料(1/3 Cu/Ce)的光催化活性最高,在180 min内降解效率达到96.2%。CuO和CeO_(2)之间形成的p−n异质结促进了光生载流子的分离和传输,从而提高了其光催化活性。计算了CuO/CeO_(2)异质结的能带位置偏移,其价带偏移(∆EVBO)为1.58 eV,导带偏移(∆ECBO)为−0.48 eV。计算结果进一步证明CuO与CeO_(2)之间形成了p−n异质结。

关键词： CuO CeO_(2) p−n异质结光催化机理亚甲基蓝

Regulation of circadian physiology and behavior by light in mammals:entrainment and masking

在线全文

学校读者我要写书评

暂无评论

life Research 2024年第2期7卷 17-27页

作者： Jia-Min liu Ya-Min Yang Wei Xu xiao-dong li College of life Sciences Wuhan UniversityWuhan 430062China

manifestation of circadian *** modern use of electric lights alters environmental lighting,leading to light exposure at inappropriate times to disturb circadian homeostasis for both human and *** light“pollution”and voluntary activities such as night shift work and transmeridian travelling have adverse consequences such as mood and metabolic disorders in *** the other hand,insufficient light exposure decreases neurotransmission from the locus ceruleus and dorsal raphe,leading to seasonal and nonseasonal affective disorders,while properly timed bright light is beneficial to mood and *** the critical and complex roles of light in mammalian physiology and behavior,it is essential to understand the underlying *** this review,we discuss the neural mechanisms through which light regulates and dysregulates circadian rhythms in mammals.

关键词： light circadian rhythms mammal

Introducing electrolytic electrochemical polymerization for constructing protective layers on Ni-rich cathodes of li-ion batteries

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

Rare Metals 2024年第6期43卷 2536-2545页

作者： lin-Tao Dou Bei li Hao-Long Nie dong-dong xiao Chao-Qun Shang xiao-Min Wang Zhan-Hui Zhang Katerina E.Aifantis Pu Hu School of Materials Science and Engineering Wuhan Institute of TechnologyWuhan 430205China Huairou Division Institute of PhysicsChinese Academy of SciencesBeijing 101400China Department of Mechanical and Aerospace Engineering University of FloridaGainesvilleFL 32603USA

liNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)(NCM811)is the most promising cathode for high-energy li-ion batteries,despite its poor cycling stability that originates from the reactions that occur with the ***,to solve this interfacial issue,a facile electrolytic electrochemical polymerization process was introduced in this paper,and a uniform conductive electrolyte interface(polyaniline)was successfully constructed on the surface of the NCM811 porous electrode(PANI-NCM),which facilitated the charge transfer during charge/*** side reactions at the interface between the cathode and the electrolyte are suppressed,and thereby,the cycling performance and rate capability are considerably ***-NCM delivers an initial capacity of 157.2 mAh·g^(-1)as well as excellent cyclability(capacity retention of 88%after 500 cycles at 2C),whereas the capacity of the bare NCM811 has dropped to 31.3 mAh·g^(-1).In addition,polypyrrole and polythiophene also can be formed through electrolytic electrochemical polymerization process,which provides a practicable tactic to modify the interfacial stability of cathodes for high-energy li-ion batteries.

关键词： lithium-ion battery Ni-rich cathode In-situ polymerization Conductive polymer Electrochemical performance

Varying water column stability controls the denitrification process in a subtropical reservoir,Southwest China

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2022年第1期34卷 208-219页

作者： Gaoyang Cui xiao-dong li Siqi li Shiyuan Ding Qinkai li Mengdi Yang Hong Lv Yiyao Wang Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions Ministry of EducationCollege of Environment and PlanningHenan UniversityKaifeng 475004China Institute of Surface-Earth System Science School of Earth System ScienceTianjin UniversityTianjin 300072China Tianjin Key Laboratory of Earth’s Critical Zone Science and Sustainable Development in Bohai Rim Tianjin UniversityTianjin 300072China

Reservoirs are regarded as hotspots of nitrogen transformation and potential sources of nitrous oxide(N_(2)O).However,it remains unclear how the hydrological conditions due to dam construction control the processes of nitrogen transformation in reservoir *** address this issue,we examined the spatial-temporal characteristics of nitrate concentrations,δ^(15)N-NO_(3)^(-),δ^(18)O-NO_(3)^(-),δ^(18)O-H_(2)O,relative water column stability(RWCS),and related environmental factors in a subtropical eutrophic reservoir(Hongfeng Reservoir,HFR),Southwest *** found that denitrification was the most important nitrogen transformation process in the HFR and that higher denitrification intensity was associated with increased RWCS in summer,which suggested hydrological control of the denitrification *** contrast,low RWCS conditions favored the nitrification process in the HFR in ***,dissolved oxygen(DO;pling/decoupling of nitrification-denitrification at the local and global *** study would advances our knowledge of the impacts of RWCS and thermal stratification on nitrogen transformation processes in reservoirs.

关键词： Thermal stratification RWCS Denitrification Nitrogen transformation Reservoir

Huangqi Decoction,a compound Chinese herbal medicine,inhibits the proliferation and activation of hepatic stellate cells by regulating the long noncoding RNA-C18orf26-1/microRNA-663a/transforming growth factor-βaxis

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Medicine 2023年第1期21卷 47-61页

作者： Ben-sheng dong Fu-qun liu Wen-na Yang xiao-dong li Miao-juan Shi Mao-rong li Xiu-li Yan Hui Zhang Traditional Chinese Medicine Epigenomics Research Center Institute of Interdisciplinary Integrative Medicine ResearchShanghai University of Traditional Chinese MedicineShanghai 201203China Department of Rheumatology and Immunology Nanjing Lishui District Hospital of Traditional Chinese MedicineNanjing 211299Jiangsu ProvinceChina Department of Rheumatology and Immunology Yangzhou University Medical CollegeYangzhou 225000Jiangsu ProvinceChina Department of Cardiovascular Physiology Faculty of MedicineKagawa UniversityKita-gunKagawa 761-0793Japan Department of Gastroenterology Yueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghai 200437China

Objective Huangqi Decoction(HQD),a classical traditional Chinese medicine formula,has been used as a valid treatment for alleviating liver fibrosis;however,the underlying molecular mechanism is still *** our previous studies showed that microRNA-663a(miR-663a)suppresses the proliferation and activation of hepatic stellate cells(HSCs)and the transforming growth factor-β/small mothers against decapentaplegic(TGF-β/Smad)pathway,whether long noncoding RNAs(lncRNAs)are involved in HSC activation via the miR-663a/TGF-β/Smad signaling pathway has not yet *** present study aimed to investigate the roles of lncRNA lnc-C18orf26-1 in the activation of HSCs and the mechanism by which HQD inhibits hepatic *** The expression levels of lnc-C18orf26-1,miR-663a and related genes were measured by quantitative reverse transcription-polymerase chain *** were transfected with the miR-663a mimic or inhibitor and lnc-C18orf26-1 small interfering *** water-soluble tetrazolium salt-1 assay was used to assess the proliferation rate of *** in lncRNA expression were evaluated in miR-663a-overexpressing HSCs by using microarray to identify miR-663a-regulated *** hybrid was used to predict the potential miR-663a binding sites on *** reporter assays further confirmed the interaction between miR-663a and the *** expression levels of collagen α-2(I)chain(COL1A2),α-smooth muscle actin(α-SMA)and TGF-β/Smad signaling pathway-related proteins were determined using Western *** Lnc-C18orf26-1 was upregulated in TGF-β1-activated HSCs and competitively bound to *** of lnc-C18orf26-1 inhibited HSC proliferation and activation,downregulated TGF-β1-stimulatedα-SMA and COL1A2 expression,and inhibited the TGF-β1/Smad signaling *** suppressed the proliferation and activation of *** increased miR-663a expression and decreased lnc-C18orf26-1 expression in *** studies showed tha

关键词： Longnoncoding RNA-C18orf26-1 MicroRNA-663a Transforming growth factor-β Hepatic stellate cells Huangqi Decoction

Combination of atezolizumab and chidamide to maintain long-term remission in refractory metastatic extranodal natural killer/T-cell lymphoma:A case report

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2022年第5期10卷 1609-1616页

作者： Juan Wang Yong-Sheng Gao Kun Xu xiao-dong li Department of Radiation Oncology Shandong Cancer Hospital and InstituteShandong First Medical University and Shandong Academy of Medical SciencesJinan 250117Shandong ProvinceChina Department of Pathology Shandong Cancer Hospital and InstituteShandong First Medical University and Shandong Academy of Medical SciencesJinan 250117Shandong ProvinceChina Department of Gastrointestinal Surgery Shandong Cancer Hospital and InstituteShandong First Medical University and Shandong Academy of Medical SciencesJinan 250117Shandong ProvinceChina

BACKGROUND The prognosis of refractory extranodal natural killer/T-cell lymphoma(ENKTL)is *** data have indicated that immune checkpoint blockade with a programmed cell death protein-1(PD-1)antibody in combination with administration of histone deacetylase inhibitors represents a potentially effective treatment *** with PD-1 antibodies,programmed death-ligand 1 antibodies have fewer side ***,we present a rare case of a patient with refractory metastatic ENKTL who achieved sustained remission of approximately 10 mo with minor adverse effects after combination therapy with atezolizumab,chidamide,and *** SUMMARY A 56-year-old woman underwent resection of a tumour in her left nasal cavity and was diagnosed with ENKTL(nasal type).Medical examination revealed tumours observed in the bilateral nasal mucosa,the subcutaneous soft tissue of the inner side of the left eye,the soft tissue of the nasopharynx,the bilateral tonsils,and the left preauricular,right hilar,bilateral neck lymph nodes and bone ***,tomography/computed tomography showed increased metabolism of the bilateral nasal mucosa and subcutaneous soft tissue of the inner side of the left eye and newly increased metabolism of the left cervical lymph node after ***,combination therapy with chidamide,atezolizumab,and radiotherapy was ***,the patient achieved a complete response following 10 mo of combination *** The outcome in this case suggests that the combination of atezolizumab,chidamide,and radiotherapy is a promising regimen for treating refractory metastatic ENKTL following chemotherapy treatment failure.

关键词： Long-term remission Refractory metastatic extranodal natural killer/T-cell lymphoma Histone deacetylase Programmed death-ligand 1 antibody Radiotherapy Case report