检索结果-南通市图书馆

Chinese Journal of Aeronautics 2025年第1期38卷 607-621页

作者： Shuyan nie Xin PAN Liming CHEN Bing DU Jie WANG College of Aerospace Engineering Chongqing UniversityChongqing 400030China College of Material and New Energy Chongqing University of Science and TechnologyChongqing 401331China

The high-temperature mechanical behaviors of Multi-Layer Composite Panels(MCP)and Corrugated Sandwich Panels(CSP)of Continuous Glass Fiber-Reinforced Polypropylene(CGFRPP)are critical for their application in aerospace fields,which have been rarely mentioned in previous ***-temperature quasi-static tensile and compression tests on CGFRPP MCP are conducted *** results showed that the tensile and compression strength,stiffness,and tensile modulus of MCP decreased with increasing *** Gibson model was found to be more suitable for predicting the high-temperature mechanical performance of MCP after comparing the calculated results of different theoretical models with experimental ***,hightemperature planar compression tests were conducted on the CGFRPP CSP,revealing that the main failure modes were corrugated core buckling and delamination between the face panel and core material,with delamination being intensified at higher ***,we proposed a strength theoretical model that considers structural buckling failure and interface delamination failure,and introduced the influence factor to evaluate the effect of interface delamination on structural strength.

关键词： High-temperature effect Fiber reinforced plastic Composite structure Sandwich structure Interface delamination Strength theory

Bidirectional regulation of the cyclic guanosine monophosphateadenosine monophosphate synthase-stimulator of interferon gene pathway and its impact on hepatocellular carcinoma

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Oncology 2025年第2期17卷 246-261页

作者： Ai-Yu nie Zhong-Hui Xiao Jia-Li Deng Na Li Li-Yuan Hao Sheng-Hao Li Xiao-Yu Hu College of Clinical Medicine Chengdu University of Traditional Chinese MedicineChengdu 610075Sichuan ProvinceChina Department of Infection Affiliated Hospital of Chengdu University of Traditional Chinese MedicineChengdu 610072Sichuan ProvinceChina

BACKGROUND Hepatocellular carcinoma(HCC)ranks as the fourth leading cause of cancerrelated deaths in China,and the treatment options are *** cyclic guanosine monophosphate-adenosine monophosphate synthase(cGAS)activates the stimulator of interferon gene(STING)signaling pathway as a crucial immune response pathway in the cytoplasm,which detects cytoplasmic DNA to regulate innate and adaptive immune *** a potential therapeutic target,cGASSTING pathway markedly inhibits tumor cell proliferation and metastasis,with its activation being particularly relevant in ***,prolonged pathway activation may lead to an immunosuppressive tumor microenvironment,which fostering the invasion or metastasis of liver tumor *** To investigate the dual-regulation mechanism of cGAS-STING in *** This review was conducted according to the PRISMA *** study conducted a comprehensive search for articles related to HCC on PubMed and Web of Science *** rigorous screening and meticulous analysis of the retrieved literature,the research aimed to summarize and elucidate the impact of the cGAS-STING pathway on HCC *** All authors collaboratively selected studies for inclusion,extracted data,and the initial search of online databases yielded 1445 *** removing duplicates,remaining 964 records were ***,55 articles met the inclusion criteria and were included in this *** Acute inflammation can have a few inhibitory effects on cancer,while chronic inflammation generally promotes its *** cGAS-STING pathway activation will result in a suppressive tumor microenvironment.

关键词： Hepatocellular carcinoma Cyclic guanosine monophosphate-adenosine monophosphate synthase-stimulator of interferon gene Interferon genes The metastasis of a tumor Immunology

Effects of Lignite Humic Acid and Lignite Humic Acid-based Combined Amendment on Soil Quality in Saline-sodic Farmlands in the West Liaohe Plain, China

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

Chinese Geographical Science 2025年第2期 401-414页

作者： nie Zhaoyang ZHANG Lu ZHANG Tieyi GUO Liangliang ZHOU Jie AN Fenghua MA hongyuan WANG Zhichun YANG Fan Northeast Institute of Geography and Agroecology Chinese Academy of Sciences University of Chinese Academy of Sciences Jilin Agricultural University

Water scarcity and soil salinization pose significant challenges to agriculture in the West Liaohe Plain, eastern Inner Mongolia, China. Shallow-buried drip irrigation can improve soil water use efficiency to alleviate water shortage in agriculture and the application of lignite humic acid reduces the adverse effects of soil salinization. However, further research is needed to investigate the effects of different application rates of lignite humic acid and humic acid-based combined amendment on soil physicochemical properties, nutrient contents, and crop yield in saline-sodic farmlands under shallow-buried drip irrigation. A two-year field experiment was conducted with control without any amendment(CK), three treatments amended with 3 t/ha(H1), 6 t/ha(H2), and 12 t/ha(H3) lignite humic acid,and three application rates with 15 t/ha(T1), 22.5 t/ha(T2), and 30 t/ha(T3) lignite humic acid-based combined amendment in 2021 and2022. The results showed that H3 reduced soil bulk density, p H, electrical conductivity, and total alkalinity, while increasing the contents of soil organic matter, total nitrogen, and available potassium in the two-year experiment. Moreover, the maize yield in H3 increased by an average of 35.5%. T2 decreased soil bulk density, p H, total alkalinity, and increased maize yield by 16.2%, compared to the first year. These results suggest that T2 consistently improved both soil quality and crop yield. Correlation analyses showed that lignite humic acid and its complexes promote maize growth and increase yield by increasing soil organic matter and total nitrogen while reducing soil salinity and total alkalinity. Based on the comprehensive analysis of the field data and the results of the comprehensive evaluation of soil quality, it was determined that the appropriate improvement measures for saline-sodic farmlands under shallow-buried drip irrigation are the application of 12 t/ha of lignite humic acid and 22.5 t/ha of lignite humic acid-based combined

关键词：

同方期刊数据库

百年墨家伦理思想研究考辨——兼论“功利主义”与“神命论”之争

在线全文

学校读者我要写书评

暂无评论

文史哲 2025年第1期 135-149,168页

作者：聂韬电子科技大学外国语学院四川成都610000

自梁启超、胡适等人确立“以西释中”的研究范式后,《墨子》文本中“利”与“天”的概念逐渐彰显出中西异质文化的互动与张力,既吸引了民国时期强调“耶墨并举”的基督教徒,也引发持“功利主义”立场的中外学者予以诠解,更开启西方汉学... 详细信息

自梁启超、胡适等人确立“以西释中”的研究范式后,《墨子》文本中“利”与“天”的概念逐渐彰显出中西异质文化的互动与张力,既吸引了民国时期强调“耶墨并举”的基督教徒,也引发持“功利主义”立场的中外学者予以诠解,更开启西方汉学界关于墨家“神命论”与“功利主义”思想的长期论战。百年墨家伦理思想研究可分为共存、演变及论辩三个阶段,其中历经“功利主义”与“神命论”成为墨家伦理思想的固有研究范式,到逐渐重视《墨子》文本自身的语义语境,以实现二者在墨学阐释中的逻辑自洽,当下更触及“以西释中”的研究范式之于墨学研究的边界。墨学的现代性阐释,既不能是西方理论的单一霸权,也不能简单地宣扬回归传统经学“义理”或考据校注,而应在重视墨家思想自身语境逻辑与文本特征的基础上,寻找中西互鉴的具体研究之道。

关键词：墨家神命论功利主义以西释中

维普期刊数据库博看期刊

Optimization of lithium extraction solar pond in Zabuye Salt Lake: Theoretical calculation combined with field experiments

在线全文

学校读者我要写书评

暂无评论

China Geology 2025年第1期8卷 26-38页

作者： Tao Ding Zhen nie qian Wu Jiang-jiang Yu Ling-zhong Bu Yun-sheng Wang En-yuan Xing Mian-ping Zheng Yu-bin Li MNR Key Laboratory of Saline Lake Resources and Environments Institute of Mineral ResourcesChinese Academy of Geological SciencesBeijing 100037China College of Engineering Tibet UniversityLhasa 850000China

This research optimized the structure of lithium extraction solar ponds to enhance the crystallization rate and yield of Li_(2)CO_(3).Using the response surface methodology in Design-Expert 10.0.3,the authors conducted experiments to investigate the influence of four factors related to solar pond structure on the crystallization of Li_(2)CO_(3) and their pairwise *** Fluid Dynamics(CFD)simulations of the flow field within the solar pond were performed using COMSOL Multiphysics software to compare temperature distributions before and after *** results indicate that the optimal structure for lithium extraction from the Zabuye Salt Lake solar ponds includes UCZ(Upper Convective Zone)thickness of 53.63 cm,an LCZ(Lower Convective Zone)direct heating temperature of 57.39℃,a CO32−concentration of 32.21 g/L,and an added soda ash concentration of 6.52 g/*** this optimized pathway,the Li_(2)CO_(3) precipitation increased by 7.34% compared to the initial solar pond process,with a 33.33% improvement in lithium carbonate crystallization *** study demonstrates the feasibility of optimizing lithium extraction solar pond structures,offering a new approach for constructing such ponds in salt *** provides valuable guidance for the efficient extraction of lithium resources from carbonate-type salt lake brines.

关键词： Salt lake Solar pond Lithium extraction Crystallization rate Box-Behnken Computational fluid dynamics Response surface Zabuye salt lake Mineral exploration engineering

Analysis Approach to Durability Based on Material Initial Fatigue Quality and S-N Curve

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Aeronautics 2007年第6期20卷 518-523页

作者： Yang Moucuna nie hong College of Energy and Power Engineering Nanjing University of Aeronautics and Astronautics Nanjing 210016 China College of Aerospace Engineering Nanjing University of Aeronautics and Astronautics Nanjing 210016 China

Based on probabilistic fracture mechanics approach, a new concept of material initial fatigue quality （MIFQ） is developed. Then, the relation between S-N curve and crack propagation curve is studied. From the study, a new durability analysis method is presented. In this method, S-N curve is used to determine crack growth rate under constant amplitude loading and evaluate the effects of different factors on durability and then the structural durability is analyzed. The tests and analyses indicate that this method has lower dependence on testing, and higher accuracy, reliability and generality and is convenient for application.

关键词： probabilistic fracture mechanics approach durability S-N curve crack propagation rate initial fatigue quality

Engineering N3C vacancies in hierarchical porous carbon nitride nanosheets for room temperature ultradeep photocatalytic aerobic oxidative desulfurization

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2025年

作者： Yina nie Weijie Yang Xin Wang Xiang Li Lele Wei Xiaolin Bai Lin Liu Feng Fu Jun Wan College of Chemistry & Chemical Engineering Research Institute of Comprehensive Energy Industrial Technology Shaanxi Key Laboratory of Chemical Reaction Engineering Yan'an University Anhui Engineering Research Center of Carbon Neutrality College of Chemistry and Materials Science Anhui Normal University

The production of ultra-low sulfur clean fuels holds global significance for improving energy efficiency and reducing environmental pollution. Photocatalytic aerobic oxidative desulfurization（PODS） offers an attractive approach to efficiently remove refractory heterocyclic aromatic sulfur compounds under mild conditions. However, the sluggish charge dynamics,insufficient molecule activation, and slow mass transfer within photocatalysts restrict the overall desulfurization efficiency,hindering the widespread application of this technology. Herein, we developed a defective g-C3N4（M1U3CN） photocatalyst with bridged N3Cvacancies and hierarchical porous structures to address these limitations. This catalyst not only demonstrates outstanding dibenzothiophene（DBT） removal efficiency of 99.6% for model oil with high conversion and selectivity but also achieves complete sulfur removal from gasoline as well as 96.7% sulfur removal for distilled diesel at room temperature,successfully achieving ultradeep aerobic oxidative desulfurization. The introduction of rich N3Cvacancies and abundant micromeso-macroporous distribution in M1U3CN enhances kinetic efficiencies by promoting charge carrier separation, mass transfer,and molecular activation simultaneously; resulting in exceptional PODS performance. This work provides a collaborative strategy to overcome kinetic challenges in aerobic oxidative desulfurization via defect and structural engineering of the catalyst.

关键词：

钻孔灌注桩施工对地层及既有管沟振动影响规律研究

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

城市轨道交通研究 2025年第1期28卷 108-112页

作者：聂鹏中铁十八局集团第三工程有限公司南阳474250

[目的]钻孔灌注桩旋挖成孔过程中会对地下既有建构筑物造成振动影响,因此需对旋挖成孔过程中引起的地层和建构筑物振动响应进行研究。[方法]以济南地铁4号线的车站基坑开挖工程为背景,通过现场测试及基于三维有限元模型的数值模拟方法,... 详细信息

[目的]钻孔灌注桩旋挖成孔过程中会对地下既有建构筑物造成振动影响,因此需对旋挖成孔过程中引起的地层和建构筑物振动响应进行研究。[方法]以济南地铁4号线的车站基坑开挖工程为背景,通过现场测试及基于三维有限元模型的数值模拟方法,针对振源距离、埋深、开挖深度、电力管沟不同位置、同时施工桩数等因素对旋挖施工引起的土层和电力管沟振动影响规律进行了分析。[结果及结论]距离振源越近处的土体和既有管沟受到的振动影响越大,距离振源超过6 m之后的土体和既有管沟受到的振动影响可忽略;随着埋深的增加,土体受到的振动影响呈现减小趋势;开挖深度至12 m后,对浅层埋深管沟的振动影响可忽略不计;测点与振源处于同一深度时,测点处振动影响最大;随着同时施工的两桩净距减小,振动速度峰值呈现升高趋势,当同时施工的两桩净距10 m时可忽略振动耦合效应。

关键词：地铁基坑钻孔灌注桩旋挖施工振动影响

Impact of 1064nm continuous laser irradiation on the image quality of CCD image sensors

在线全文

学校读者我要写书评

暂无评论

Optoelectronics Letters 2025年

作者： ZHANG Cuiheng ZUO Minghui nie Pin ZHU Xiaoyong WANG Di Jilin Key Laboratory of Solid-State Laser Technology and Application， School of Physics， Changchun University of Science and Technology

Charge-coupled device (CCD) is widely used in various fields due to its high sensitivity， low power consumption， and high quantum efficiency. However， strong laser irradiation can cause permanent damage to CCD image sensors， thereby affecting the quality of the images. In order to thoroughly investigate the impact of lasers on the image quality of CCD image sensors， this paper employs objective image quality assessment methods to study the damage effects of 1064 nm continuous lasers on CCD image sensors at different power densities. Through a comprehensive analysis of grayscale distribution histograms， PSNR (peak signal-to-noise ratio)， and SSIM (structural similarity index measure)， the variations in image quality with increasing power density are revealed. The research results indicate that at low power density levels， the image quality decreases slowly; however， once the power density reaches a threshold， the image quality rapidly declines. When the image quality is severely damaged， the frequency of the main grayscale value drops to 0， and the degree of image damage saturates. Additionally， with the increase in power density， the dynamic range of the image first expands and then shrinks， eventually shifting towards the low grayscale value range.

关键词：

Effect of Ti Additions on Mechanical and Thermodynamic Properties of W-Ti Alloys: A First-principles Study

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 Wuhan University of Technology(Materials Science) 2025年第1期40卷 246-257页

作者： ZHANG Jian nie Wei HUANG Jin ZHU Ke LIU Ruxia ZHANG Ruizhi LUO Guoqiang SHEN qiang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Institute for Carbon Neutrality University of Science and Technology BeijingBeijing 100083China

The mechanical and thermodynamic properties of W-Ti alloys(including W_(15)Ti_(1),W_(14)Ti_(2),W_(12)Ti_(4) and W_(8)Ti_(8) alloys)were investigated by the first-principles approach based on density functional *** results indicate that W-Ti alloys except W_(8)Ti_(8) are thermodynamically *** modulus and hardness of W-Ti alloys are smaller than those of pure tungsten and gradually decrease with increasing Ti ***,their B/G ratios and Poisson's ratios exceed those of pure tungsten,suggesting that the introduction of Ti decreases the mechanical strength while enhancing the ductility of W-Ti *** thermal expansion coefficients for W-Ti alloys all surpass those of pure tungsten,indicating that the introduction of titanium exacerbates the thermal expansion behavior of W-Ti ***,elevated pressure has the capacity to suppress the thermal expansion tendencies in titanium-doped tungsten *** study offers theoretical insights for the design of nuclear materials by exploring the mechanical and thermodynamic properties of W-Ti alloys.

关键词： first-principles mechanical properties thermodynamic properties tungsten-titanium alloys