检索结果-南通市图书馆

Journal of Geographical Sciences 2025年第1期35卷 17-38页

作者： ZHU Wenbin lu yu Institute of Geographic Sciences and Natural Resources Research CASBeijing100101China School of Geographical Science Nanjing University of Information Science&TechnologyNanjing210044China

The Qinba Mountains are climatically and ecologically recognized as the north-south transitional zone of *** of its phenology is critical for comprehending the response of vegetation to climatic *** retrieved the start of spring phenology(SOS)of eight forest communities from the MODIS products and adopted it as an indicator for spring *** analysis,partial correlation analysis,and GeoDetector were employed to reveal the spatio-temporal patterns and climatic drivers of *** results indicated that the SOS presented an advance trend from 2001 to 2020,with a mean rate of−0.473 d yr^(−1).The SOS of most forests correlated negatively with air temperature(TEMP)and positively with precipitation(PRE),suggesting that rising TEMP and increasing PRE in spring would forward and delay SOS,*** dominant factors influencing the sensitivity of SOS to climatic variables were altitude,forest type,and latitude,while the effects of slope and aspect were relatively *** response of SOS to climatic factors varied significantly in space and among forest communities,partly due to the influence of altitude,slope,and aspect.

关键词： spring phenology climatic drivers altitude forest communities lag effect Qinba Mountains

High-frequency enhanced ultrafast compressed active photography

在线全文

学校读者我要写书评

暂无评论

Opto-Electronic Advances 2025年第1期8卷 32-43页

作者： Yizhao Meng yu lu Pengfei Zhang Yi Liu Fei Yin Lin Kai Qing Yang Feng Chen State Key Laboratory for Manufacturing System Engineering and Shaanxi Key Laboratory of Photonics Technology for Information School of Electronic Science and EngineeringXi’an Jiaotong UniversityXi’an 710049China School of Mechanical Engineering Xi’an Jiaotong UniversityXi’an 710049China

Single-shot ultrafast compressed imaging(UCI)is an effective tool for studying ultrafast dynamics in physics,chemistry,or material science because of its excellent high frame rate and large frame ***,the random code(Rcode)used in traditional UCI will lead to low-frequency noise covering high-frequency information due to its uneven sampling interval,which is a great challenge in the fidelity of large-frame ***,a high-frequency enhanced compressed active photography(H-CAP)is *** uniformizing the sampling interval of R-code,H-CAP capture the ultrafast process with a random uniform sampling *** sampling mode makes the high-frequency sampling energy dominant,which greatly suppresses the low-frequency noise blurring caused by R-code and achieves high-frequency information of image *** superior dynamic performance and large-frame reconstruction ability of H-CAP are verified by imaging optical self-focusing effect and static object,*** applied H-CAP to the spatial-temporal characterization of double-pulse induced silicon surface ablation dynamics,which is performed within 220 frames in a single-shot of 300 ps.H-CAP provides a high-fidelity imaging method for observing ultrafast unrepeatable dynamic processes with large frames.

关键词： ultrafast compressed imaging high-frequency enhanced sampling spectral-temporal transform transient processes high-fidelity reconstruction

Diversity and Complexity of Soil Organic Carbon in Typical Wetlands of Louisiana, USA

在线全文

学校读者我要写书评

暂无评论

Chinese Geographical Science 2025年第02期 415-422页

作者： yu lu JIANG Qijun ZHAO Wenwen ZHANG Zhongsheng WANG Jim Jian School of Economics and Management Yancheng Institute of Technology College of Economics and Management Shanghai Ocean University Northeast Institute of Geography and Agroecology Chinese Academy of Sciences University of Chinese Academy of Sciences School of Plant Environmental and Soil Sciences Louisiana State University Agricultural Center

Coastal wetlands store large amounts of soil organic carbon（SOC）, and have assumed key roles in mitigating increasing CO2in the atmosphere. The ongoing debate about SOC stabilization mechanisms stems partly from our incomplete understanding of its complex chemical architecture at the molecular scale. Deciphering the molecular composition of soil organic matter is crucial for revealing mechanisms that govern SOC persistence. This study utilized the field sampling data from 2016 and aimed to characterize molecular composition of SOC in typical salt marsh（SM） and freshwater marsh（FM） in Louisiana coastal regions, USA by extending the application of graph networks with pyrolysis-gas chromatography-mass spectrometry, and then to quantify potential links between SOC persistence and molecular diversity and network complexity. The results revealed that SOC predominantly consisted of alkyl compounds（Alkyl）, phenol（Ph）, lignin（Lg）, and aliphatic compounds, constituting 23.21% and 27.85%, 17.84% and 21.55%, 16.94% and 15.49%,17.20% and 15.93% of total ion chromatogram（TIC） in SM and FM wetlands, respectively. Molecular diversity in SM was higher than that in FM, while the network graph exhibited greater complexity in FM, featuring 167 and 123 nodes, and 1935 and 1982 edges in the network graphs of SOC from SM and FM, respectively. Correlation analysis confirmed positive relations between molecular diversity indices, network complexity, and abundance of stable carbon isotopes(δ13C). The variance partitioning analysis（VPA） supplied that soil nutrients exerted the most significant control on SOC persistence. Molecular diversity and network complexity, when combined with soil nutrients, could explain 34% of the variances in SOC persistence.

关键词：

Jet Flame Characteristics of High-Temperature Gas-Solid Mixed Fuels

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 Thermal Science 2025年第02期 653-671页

作者： lu yu FANG Neng LI Wei GUO Shuai WU yujun HU yujie REN Qiangqiang Institute of Engineering Thermophysics Chinese Academy of Sciences University of Chinese Academy of Sciences State Key Laboratory of Coal Conversion Institute of Engineering ThermophysicsChinese Academy of Sciences College of Coal Engineering Shanxi Datong University

Preheating combustion/gasification technology enables efficient and environmentally friendly utilization of coal resources,but the research on the flow and reaction characteristics of high-temperature gas-solid mixed fuels produced by the technology still needs to be further *** flame can intuitively show the jet,mixing and reaction of fuel and oxidant at the outlet of the ***,this study investigates the jet flame characteristics of high-temperature gas-solid mixed fuels on a self-designed test *** temperature and gas-solid mixing are the special features of the fuel in this study,which are different from other ***,we first qualitatively compare the jet flame characteristics of high-temperature gas-solid mixed fuel with traditional *** preliminary results indicate that high-temperature gas-solid mixed fuels exhibit higher reactivity and a faster reaction rate compared to pulverized *** a result,it shows different characteristics in flame shape,ignition delay and ignition *** jet flame shape of high-temperature gas-solid mixed fuels closely resembles that of the pulverized coal group combustion flame,displaying a continuous cloud-like structure similar to the shape of a gas-fueled ***,the flame image does not show any significant ignition delay *** upon these results,this study also quantitatively analyzes the geometric parameters,temperature distribution and oscillation frequency of the high-temperature gas-solid mixed fuel jet flame under different secondary air equivalence ratios and primary air equivalence ratios,so that we can have a deeper understanding of the influence of operating parameters on the combustion/gasification process.

关键词：

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

晚明科道官的年例迁转与政争

学术研究 2025年第1期 150-161页

作者：余璐上海师范大学人文学院上海200234

明代科道官的年例迁转,是由吏部拟定人选去向,皇帝钦点决定。万历中期以后,与年例有关的政争频繁发生。这些政争不仅反映了朝堂舆论与神宗意志的激烈对立,而且推动着年例主导权的分散与下移。引发年例政争的先决条件,既有朝堂舆论与皇... 详细信息

明代科道官的年例迁转,是由吏部拟定人选去向,皇帝钦点决定。万历中期以后,与年例有关的政争频繁发生。这些政争不仅反映了朝堂舆论与神宗意志的激烈对立,而且推动着年例主导权的分散与下移。引发年例政争的先决条件,既有朝堂舆论与皇权对立的政治性因素,又有年例规则灵活可变的制度性因素。神宗对吏部的刻意打压和对朝堂政局的放任,令科道官获得了议拟年例的初步参与权。在随后围绕六科都给事中年例规则的政争中,六科为增加内升京堂的人数,在不同时期给出不同的方案解释,直接影响着吏部的年例推升结果。至明末,科道年例的拟定权不专属于吏部,而是由吏部与科道共同分有,形成六科舆论与朝堂舆论均有影响的分散状态。关注晚明政局中科道年例等非正式惯例,有助于增进晚明党争的相关认识。

关键词：明代科道年例党争官僚政治

Laser assisted phase transformation of carbon-based transition metal oxide electrode for high-performance supercapacitor application

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2025年

作者： Mingzhen Xiu Jianghong Zhang yu lu Xun Cao Kang Huang Siyu Zhu Bowei Zhang yu Liang Chunwang Zhao Junsheng Wu Yizhong Huang School of Materials Science and Engineering Nanyang Technological University Energy Research Institute Interdisciplinary Graduate Programme Nanyang Technological University Institute of Sustainability for Chemicals Energy and Environment Agency for Science Technology and ResearchSingapore Institute of Advanced Materials and Technology University of Science and Technology Beijing School of Materials Science and Technology Shenyang University of Chemical Technology School of Materials Science and Hydrogen Energy Foshan University

Transitional metal oxides have a wide range of applications due to their superior *** enhanced performance of metal oxide relies on their desirable oxidation states,which is challenging to achieve and requires complex *** study demonstrates a facile strategy enabling rapid phase transformation of transition metal *** approach involves synthesis of a tetragonal Mn3O4/carbon cloth composite using the liquid plasma discharge deposition （LPDD） technique,followed by laser irradiation with the presence of ethylene glycol under an N2gas *** resulting face-centered cubic MnO/carbon cloth electrode exhibits an excellent capacitance of 1,125 F g-1at 2 A g-1,with remarkable capacitance retention of 95%after10,000 *** approach can be extended to other transition metals including Co,Cu,Cr,Fe,Ni,and *** simulations reveal the significance of ethylene glycol and the underlying mechanism associated with the phase transformation of transition metal *** present study offers a powerful technique for the phase transformation of transition metal oxide which can guide the development of new electrode materials with enhanced electrochemical properties for high-performance energy storage applications.

关键词：

Telecontext-Enhanced Recursive Interactive Attention Fusion Method for Line-Level Defect Prediction

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2025年第2期82卷 2077-2108页

作者： Haitao He Bingjian Yan Ke Xu lu yu School of Information Science and Engineering Yanshan UniversityQinhuangdao066000China Hebei Port Group Co. Ltd.Tangshan063000China

Software defect prediction aims to use measurement data of code and historical defects to predict potential problems,optimize testing resources and defect ***,current methods face challenges:(1)Coarse-grained file level detection cannot accurately locate specific defects.(2)Fine-grained line-level defect prediction methods rely solely on local information of a single line of code,failing to deeply analyze the semantic context of the code line and ignoring the heuristic impact of line-level context on the code line,making it difficult to capture the interaction between global and local ***,this paper proposes a telecontext-enhanced recursive interactive attention fusion method for line-level defect prediction(TRIA-LineDP).Firstly,using a bidirectional hierarchical attention network to extract semantic features and contextual information from the original code lines as the ***,the extracted contextual information is forwarded to the telecontext capture module to aggregate the global context,thereby enhancing the understanding of broader code ***,a recursive interaction model is used to simulate the interaction between code lines and line-level context,passing information layer by layer to enhance local and global information exchange,thereby achieving accurate defect *** results from within-project defect prediction(WPDP)and cross-project defect prediction(CPDP)conducted on nine different projects(encompassing a total of 32 versions)demonstrated that,within the same project,the proposed methods will respectively recall at top 20%of lines of code(Recall@Top20%LOC)and effort at top 20%recall(Effort@Top20%Recall)has increased by 11%–52%and 23%–77%.In different projects,improvements of 9%–60%and 18%–77%have been achieved,which are superior to existing advanced methods and have good detection performance.

关键词： Line-level defect prediction telecontext capture recursive interactive structure hierarchical attention network

Atomically precise nickel-sulfur clusters for efficient electrochemical 2,5-hydroxymethylfurfural oxidation

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

Nano Research 2025年第1期18卷 140-148页

作者： Fen Wang lu-yu Liu Sha-Sha Cui Ting-Ting Li Xiao-Meng Yang Zhijuan Liu Yanyong Wang Henan Key Laboratory of Crystalline Molecular Functional Materials Henan International Joint Laboratory of Tumor Theranostical Cluster MaterialsGreen Catalysis Centerand College of ChemistryZhengzhou UniversityZhengzhou 450001China State Key Laboratory of Chem/Bio-sensing and Chemometrics College of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082China

Nickel sulfide exhibits excellent catalytic activity in the electrochemical 2,5-hydroxymethylfurfural oxidation reaction(HMFOR).However,due to the polydispersity of nanoparticles,it is difficult to establish a clear structure-activity relationship at the atomic *** this work,we have successfully synthesized atomically precise Ni_(6)(PET)_(12)and Ni_(4)(PET)_(8)clusters(PET:2-phenylethanethiol)for ***^(2+)and S_(2)-with atomic ratio of 1:2 was mainly existed in Ni_(6)(PET)_(12)and Ni_(4)(PET)_(8)to form Ni-S *** electrochemical test results have suggested both Ni_(6)(PET)_(12)and Ni_(4)(PET)_(8)displayed outstanding electrocatalytic ability for *** Ni_(6)(PET)_(12)exhibited better electrocatalytic ability than Ni_(4)(PET)_(8)with higher current density,lower overpotential and faster reaction *** superior electrochemical ability of Ni_(6)(PET)_(12)may be due to the enhanced adsorption towards HMF molecule with strong interaction towards hydroxyl group and furan ***,it found that the Ni^(2+)species in Ni_(6)(PET)_(12)could rapidly oxidized into Ni^(3+)species,which could spontaneously capture electron and proton from HMF for *** theoretical calculation demonstrated that the Ni_(6)(PET)_(12)process lower free energy barrier than Ni_(4)(PET)_(8)to display excellent electrocatalytic *** work is of great significance for designing efficient electrocatalysts for HMFOR.

关键词： atomically precise nickel nanoclusters 2 5-hydroxymethylfurfural electro-oxidation Ni3+species

Role of nutrition in diabetes mellitus and infections

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

World Journal of Clinical Cases 2025年第3期13卷 1-8页

作者： Xue-lu yu Li-yun Zhou Xiao Huang Xin-yue Li Ming-Ke Wang Ji-Shun Yang Naval Medical Center of PLA Naval Medical UniversityShanghai 200052China

In this editorial,we have commented on the article that has been published in the recent issue of World Journal of Clinical *** authors have described a case of unilateral thyroid cyst and have opined that the acute onset of infection may be linked to diabetes mellitus(DM).We have focused on the role of nutrition in the association between DM and *** with DM are at a high risk of infection,which could also be attributed to nutrition-related *** interventions for patients with diabetes are mainly based on a low-calorie diet,which can be achieved by adhering to a low-carbohydrate ***,dietary fiber supplementation is recommended to maintain the diversity of the gut ***,high-quality protein can prevent the increased risk of infection due to *** of vitamins C,vitamins A,vitamins D,and folic acid improves blood sugar control and facilitates immune *** deficiencies augment the risk of infection,but the relationship with diabetes is mostly U-shaped and a good intake should be maintained.

关键词： Diabetes mellitus Infection Macronutrients Vitamins Minerals

畲族服饰元素在现代家具装饰设计中的应用研究

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

林产工业 2025年第2期62卷 58-63页

作者：卢思宇闫晶浙江农林大学艺术设计学院浙江杭州311300

为促进畲族服饰的传承与发展,设计出具有时代性、艺术性和文化性的服饰产品,本文通过结合图文互证的方式,提取浙闽地区具有代表性的畲族服饰元素设计因子,基于形状文法对典型畲族元素进行推演,并运用艺术与计算机数字化技术多维融合的... 详细信息

为促进畲族服饰的传承与发展,设计出具有时代性、艺术性和文化性的服饰产品,本文通过结合图文互证的方式,提取浙闽地区具有代表性的畲族服饰元素设计因子,基于形状文法对典型畲族元素进行推演,并运用艺术与计算机数字化技术多维融合的交叉学科思维,设计出既具有畲族文化特色又符合现代审美的创新案例。在“突显畲族文化”的宏观视角中,通过分析畲族服饰元素、文化、符号元素的独特性,厘清了在现代化背景下,传统文化的创新机遇与路径。

关键词：畲族服饰形状文法家具装饰纹样设计应用