检索结果-南通市图书馆

Middle Devonian ostracods from Jiwozhai patch reef(Dushan,Guizhou Province,South China):Biostratigraphic and palaeoecological implication

在线全文

学校读者我要写书评

暂无评论

Journal of Palaeogeography 2024年第3期13卷 581-593页

作者： Jun-Jun Song Jia-Yuan Huang Wen Guo Kun Liang Yu-Cong Sun zhi-Hong wang Wen-Kun Qie State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and PalaeontologyChinese Academy of SciencesNanjing 210008Jiangsu ProvinceChina Hubei Key Laboratory of Paleontology and Geological Environment Evolution Wuhan Center of China Geological SurveyWuhan 430205Hubei ProvinceChina University of Chinese Academy of Sciences NanjingNanjing 211135Jiangsu ProvinceChina

The Middle Devonian ostracods from the Jiwozhai patch reef in Dushan, Guizhou Province, South China were described for the first time in this study. Twenty-nine species belonging to 20 genera were identified and figured, including a new species named wangshangkia jiwozhaiensis sp. nov. The ostracod fauna in the Jiwozhai patch reef represents a Givetian age. The ostracod assemblage belongs to the smooth-podocopid association, which is also ecologically equivalent to the Eifelian Mega-Assemblage Ⅲ. This association is indicative of shallow open-marine environments. The Jiwozhai patch reef fauna is primarily comprised of suspension feeders, including filter-feeding ostracods, corals, brachiopods and bryozoans. Ostracods from the Jiwozhai patch reef were compared to the ostracod faunas from Laurentia-Baltica at generic level, which reveals limited faunal exchanges between South China and Laurentia-Baltica during the Middle Devonian.

关键词： Ostracods Givetian Jiwozhai patch reef Dushan Palaeoecology

Characteristics and geological significance of carbon and oxygen isotopes of the Permian Lucaogou Formation dolomite in the southern Junggar Basin, northwestern China

在线全文

学校读者我要写书评

暂无评论

Journal of Palaeogeography 2024年第4期13卷 862-882页

作者： Gang Liu Guo-zhi wang Na Li Hong-Ling He Nan-Nan Lu Qing Lei Zi-Ang wang College of Earth and Planetary Sciences Chengdu University of Technology National Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Chengdu University of Technology Hebei Survey Institute of Coal Geology Sichuan Earthquake Agency

Anomalously positive δ13C values in ancient dolomites are very *** gray argillaceous rocks of the lacustrine sediments of the Permian Lucaogou Formation are important source rocks in the Junggar Basin,and dolomites of varying thicknesses from 10 cm to 150 cm are often interspersed in argillaceous *** on the study of petrographic sections,this paper systematically analyzes the carbon and oxygen isotopes of dolomite and discusses the causes of abnormally high carbon isotope values and their significance in reconstructing paleoenvironment and *** results show that carbon isotope values are abnormally high in the dolomite of Lucaogou Formation,and the δ13C value is between+3.2‰PDB and+19.6‰PDB,with an average of+9.7‰*** δ18O values range from-17.4‰PDB to-1.7‰PDB,with an average of-8.1‰*** the lower part to the upper part of the Lucaogou Formation,the carbon isotope value gradually increases and becomes increasingly positive,and the carbon isotope of the dolomite deposited near the shore is more positive than that of the dolomite deposited far from the *** anomalously positive δ13C of the dolomite is mainly caused by microbial methanogenesis,with some contribution from *** are mainly distributed at the redox *** controls the salinity and fluctuation of the redox interface in sedimentary *** positive deviation difference in carbon isotopes between nearshore and offshore sedimentary dolomites may be related to the location of the redox interface during ***,the petrographic features and carbon and oxygen isotope signatures of the sections reflect the gradual evolution of the paleolake from a hydrologically open environment to a hydrologically closed one and the possible transition of the paleoclimate from a relatively warm to an arid condition,which is possibly a geochemical response to global climate change in the Permian period.

关键词： Junggar Basin Lucaogou Formation Dolomite Positive carbon isotope anomaly Paleoenvironment

Producing circularly polarized luminescence by radiative energy transfer from achiral metal-organic cage to chiral organic molecules

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 Chemical Letters 2024年第8期35卷 498-502页

作者： Zhao-Xia Lian Xue-zhi wang Chuang-Wei Zhou Jiayu Li Ming-De Li Xiao-Ping Zhou Dan Li College of Chemistry and Materials Science Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and ApplicationsJinan UniversityGuangzhou 510632China College of Chemistry and Chemical Engineering Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong ProvinceShantou UniversityShantou 515063China

The development of circularly polarized luminescence(CPL)materials with high performance is signifi-cantly ***,we develop a facial strategy for fabricating a CPL-active system by employing an achiral luminescent metal-organic cage(MOC)and chiral boron dipyrromethene(BODIPY)*** is achieved by taking advantage of the radiative energy transfer process,in which BODIPY molecules act as energy acceptors and MOCs act as *** CPL performance(maximum luminescence dissymme-try factor up to±1.5×10^(−3))can be tuned by adjusting the ratio between MOCs and ***-light emission with the CPL feature is obtained by using a ternary system including MOC,chiral BODIPY,and Rhodamine *** present work provides a facile and universal strategy to construct a CPL-active system by integrating achiral luminophores and chiral molecules.

关键词： Circularly polarized luminescence Metal-organic cage Radiative energy transfer Chiral small molecules Bodipy Chirality

Sorely reducing emissions of non-methane short-lived climate forcers will worsen compound flood-heatwave extremes in the Northern Hemisphere

在线全文

学校读者我要写书评

暂无评论

Advances in Climate Change Research 2024年第4期15卷 737-750页

作者： Ying-Fang LI zhi-Li wang Ya-Dong LEI Xiao-Chao YU Lin LIU Hui-Zheng CHE Xiao-Ye ZHANG State Key Laboratory of Severe Weather and Key Laboratory of Atmospheric Chemistry of China Meteorological Administration Chinese Academy of Meteorological SciencesBeijing 100081China University of Chinese Academy of Sciences Beijing 100190China

Non-methane short-lived climate forcer(SLCF)or near-term climate forcer(NTCF)emissions,as a significant driver of climate change,can be reduced to improve air *** reductions may contribute to additional warming of the climate system in the short term,thereby strongly affecting the likelihood of climate ***,there has been no quantitative assessment of the impact of non-methane SLCF mitigation on compound flood-heatwave extremes(CFHEs).This study quantitatively investigates the changes in future(2031-2050 versus 1995-2014)CFHEs and the resulting population exposure in the Northern Hemisphere(NH)due to non-methane SLCF *** used multi-model ensemble simulations under two future scenarios from the Aerosol and Chemistry Model Intercomparison Project(AerChemMIP)in the Coupled Model Intercomparison Project Phase 6(CMIP6).The two future scenarios share the same greenhouse gas(GHG)emissions but have weak(Shared Socioeconomic Pathway(SSP)3-7.0)versus strong(SSP3-7.0-lowNTCF)levels of air quality control *** results show that future non-methane SLCF reductions during 2031-2050 results in about a 7.3%±2.3%increase in grid exposure to CFHEs in the NH relative to the period *** frequency,intensity,and duration of CFHEs increase by varying *** the period 2031-2050,the frequency of CFHEs across the NH increases by 2.9±0.9 events per decade due to non-methane SLCF *** increases in CFHE frequency are more pronounced in East Asia,South Asia,Siberia,and northern and eastern North *** East and South Asia,the in-tensities of both heatwaves and floods corresponding to CFHEs increase markedly,where heatwave magnitude(HWM)increases by 0.3±0.2 K in East Asia and weighted average precipitation(WAP)increases by 18.3%±15.3%and 12.0%±4.5%in East Asia and South Asia,*** other regions,rising temperatures dominate the increase in *** regard to the duration of CFHEs,future reductions in non-methane SLC

关键词： Non-methane SLCFs CHFEs Cleaner air Population exposure

Molecular Ferroelastic Induced by Mono-/Double-Protonation Strategy

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 Chemistry 2024年第15期42卷 1706-1712页

作者： Jia-Qi Luo Meng-Meng Lun Qiang-Qiang Jia zhi-Jie wang Hai-Feng Lu Yi Zhang Da-Wei Fu Institute for Science and Applications of Molecular Ferroelectrics Key Laboratory of the Ministry of Education for Advanced Catalysis MaterialsZhejiang Normal UniversityJinhuaZhejiang 321004China Ordered Matter Science Research Center Jiangsu Key Laboratory for Science and Applications of Molecular FerroelectricsSoutheast UniversityNanjingJiangsu 211189China

Molecular ferroelastics with the natural features of mechanical flexibility and switchable spontaneous strain have attracted widespread attention in the scientific community due to their potential applications in tunable gratings,flexible memorizers,strain sensors,and intelligent ***,most designs of molecular ferroelastics remain in the stage of blind exploration,posing a challenge to achieve a functional ferroelastic more ***,we have successfully obtained a molecular ferroelastic,[Me_(2)NH(CH_(2))_(2)NH_(3)](ReO_(4))_(2)(Me_(2)NH(CH_(2))_(2)NH_(3)=N,N-dimethylethylenediammonium),under the guidance of the mono-/double-protonation ***_double-protonated[Me_(2)NH(CH_(2))_(2)NH_(3)](ReO_(4))_(2) undergoes a paraelastic-ferroelastic phase transition with the Aizu notation of 2/mFi at 322 ***,the theoretical calculation and experimental measurement simultaneously show that[Me_(2)NH(CH_(2))_(2)NH_(3)](ReO_(4))_(2) possesses good mechanical flexibility,because its elastic modulus(E)of 8.26 GPa and hardness(H)of 0.45 GPa are smaller than the average values of organic crystals(E of 12.05 GPa and H of 0.5 GPa),which makes it promising to apply in wearable pressure sensors,implantable medical sensors,high-precision tuners,*** work further enriches the molecular ferroelastic family and demonstrates that mono-/double-protonation is one of the effective molecular modification strategies for designing ferroelastics.

关键词： Molecular crystal Ferroelastic Mono-/double-protonation Mechanical flexibility Phase transition Crystal engineering Computational chemistry Molecular dynamics

A thermo-mechanical damage constitutive model for deep rock considering brittleness-ductility transition characteristics

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Central South University 2024年第7期31卷 2379-2392页

作者： FENG Chen-chen wang zhi-liang wang Jian-guo LU zhi-tang LI Song-yu School of Civil and Hydraulic Engineering Hefei University of TechnologyHefei 230009China School of Mechanics and Civil Engineering China University of Mining and TechnologyXuzhou 221116China School of Resources and Environmental Engineering Hefei University of TechnologyHefei 230009China

This paper developed a statistical damage constitutive model for deep rock by considering the effects of external load and thermal treatment temperature based on the distortion *** model parameters were determined through the extremum features of stress−strain ***,the model predictions were compared with experimental results of marble *** is found that when the treatment temperature rises,the coupling damage evolution curve shows an S-shape and the slope of ascending branch gradually decreases during the coupling damage evolution *** a constant temperature,confining pressure can suppress the expansion of *** the confining pressure increases the rock exhibits ductility characteristics,and the shape of coupling damage curve changes from an S-shape into a quasi-parabolic *** model can well characterize the influence of high temperature on the mechanical properties of deep rock and its brittleness-ductility transition characteristics under confining ***,it is suitable for sandstone and granite,especially in predicting the pre-peak stage and peak stress of stress−strain curve under the coupling action of confining pressure and high *** relevant results can provide a reference for further research on the constitutive relationship of rock-like materials and their engineering applications.

关键词： deep rock crack initiation threshold thermo-mechanical coupling statistical damage model distortion energy theory

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2024年第9期30卷 1224-1236页

作者： Hai-Yang Li Lin-Lin Zheng Nan Hu zhi-Hao wang Chang-Cheng Tao Ya-Ru wang Yue Liu Zulihumaer Aizimuaji Hong-Wei wang Rui-Qi Zheng Ting Xiao Wei-Qi Rong Department of Hepatobiliary Surgery National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China Department of Hepatobiliary Hernia Surgery Liaocheng Dongcangfu People’s HospitalLiaocheng 252000Shandong ProvinceChina State Key Laboratory of Molecular Oncology Department of Etiology and CarcinogenesisNational Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China

BACKGROUND As a critical early event in hepatocellular carcinogenesis,telomerase activation might be a promising and critical biomarker for hepatocellular carcinoma(HCC)patients,and its function in the genesis and treatment of HCC has gained much attention over the past two *** To perform a bibliometric analysis to systematically assess the current state of research on HCC-related *** The Web of Science Core Collection and PubMed were systematically searched to retrieve publications pertaining to HCC/telomerase limited to“articles”and“reviews”published in English.A total of 873 relevant publications related to HCC and telomerase were *** employed the Bibliometrix package in R to extract and analyze the fundamental information of the publications,such as the trends in the publications,citation counts,most prolific or influential writers,and most popular journals;to screen for keywords occurring at high frequency;and to draw collaboration and cluster analysis charts on the basis of coauthorship and *** was utilized to compile and visualize the bibliometric *** A surge of 51 publications on HCC/telomerase research occurred in 2016,the most productive year from 1996 to 2023,accompanied by the peak citation count recorded in *** to December 2023,35226 citations were made to all publications,an average of 46.6 citations to each *** United States received the most citations(n=13531),followed by China(n=7427)and Japan(n=5754).In terms of national cooperation,China presented the highest centrality,its strongest bonds being to the United States and *** the 20 academic institutions with the most publications,ten came from China and the rest of Asia,though the University of Paris Cité,Public Assistance-Hospitals of Paris,and the National Institute of Health and Medical Research(INSERM)were the most *** for individual contributions,Hisatomi H,Kaneko S,and Ide T were the three most prolific a

关键词： Telomerase Bibliometric analysis Telomerase reverse transcriptase Prognosis Treatment Hepatocellular carcinoma

Aspirin suppresses hepatocellular carcinoma progression by inhibiting platelet activity

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Oncology 2024年第6期16卷 2742-2756页

作者： Li-Jun Zhao zhi-Yin wang Wei-Ting Liu Li-Li Yu Hao-Nan Qi Jie Ren Chen-Guang Zhang Hematology Laboratory The First Affiliated Hospital of Xinxiang Medical UniversityXinxiang 453100Henan ProvinceChina Xinxiang Key Laboratory of Tumor Microenvironment and Immunotherapy School of Medical TechnologyXinxiang Medical UniversityXinxiang 453003Henan ProvinceChina School of Public Health Xinxiang Medical UniversityXinxiang 453003Henan ProvinceChina

BACKGROUND Hepatocellular carcinoma(HCC)is the most common malignant liver disease in the ***(PLTs)are known to play a key role in the maintenance of liver homeostasis and the pathophysiological processes of a variety of liver *** is the most classic antiplatelet ***,the molecular mechanism of platelet action and whether aspirin can affect HCC progression by inhibiting platelet activity need further *** To explore the impact of the antiplatelet effect of aspirin on the development of *** Platelet-rich plasma,platelet plasma,pure platelet,and platelet lysate were prepared,and a coculture model of PLTs and HCC cells was ***-8 analysis,apoptosis analysis,Transwell analysis,and real-time polymerase chain reaction(RT-PCR)were used to analyze the effects of PLTs on the growth,metastasis,and inflammatory microenvironment of ***-PCR and Western blot were used to detect the effects of platelet activation on tumor-related signaling *** was used to block the activation and aggregation of PLTs both in vitro and in vivo,and the effect of PLTs on the progression of HCC RESULTS PLTs significantly promoted the growth,invasion,epithelial-mesenchymal transition,and formation of an inflammatory microenvironment in HCC *** PLTs promoted HCC progression by activating the mitogenactivated protein kinase/protein kinase B/signal transducer and activator of transcription three(MAPK/AKT/STAT3)signaling ***,aspirin inhibited HCC progression in vitro and in vivo by inhibiting platelet *** PLTs play an important role in the pathogenesis of HCC,and aspirin can affect HCC progression by inhibiting platelet *** results suggest that antiplatelet therapy has promising application prospects in the treatment and combined treatment of HCC.

关键词： Platelets Antiplatelet therapy Hepatocellular carcinoma Aspirin Antitumor

Correction:A positive feedback inhibition of isocitrate dehydrogenase 3β on paired-box gene 6 promotes Alzheimerlike pathology

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 2024年第8期9卷 3537-3540页

作者： Xin wang Qian Liu Hai-tao Yu Jia-zhao Xie Jun-ning Zhao zhi-ting Fang Min Qu Yao Zhang Ying Yang Jian-zhi wang Department of Pathophysiology School of Basic Medicine Key Laboratory of Education Ministry of China/Hubei Province for Neurological Disorders Tongji Medical College Huazhong University of Science and Technology Wuhan China Department of Fundamental Medicine Wuxi School of Medicine Jiangnan University Wuxi Jiangsu 214122 China Co-innovation Center of Neuroregeneration Nantong University Nantong 226000 China Hubei Provincial Key Laboratory for Applied Toxicology Hubei Provincial Center for Disease Control and Prevention Hubei Provincial Academy of Preventive Medicine Wuhan 430000 China Endocrine Department of Liyuan Hospital Key Laboratory of Ministry of Education of China for Neurological Disorders Tongji Medical College Huazhong University of Science and Technology Wuhan 430077 China

After online publication of the article',the authors noticed that,owing to authors'oversight in layer placement within the illustration,Golgi staining images representing both the 5xFAD group and,the 5xFAD+IDH3β_grou... 详细信息

关键词： illustration representing noticed