检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

习近平文化思想的创新性理论

新疆师范大学学报（哲学社会科学版） 2025年第1期46卷 7-15,F0002页

作者：张国祚湖南大学中国文化软实力研究中心湖南大学马克思主义学院湖南长沙410012

习近平文化思想是对马克思主义经典作家文化理论的继承、丰富和发展,是对中华优秀传统文化的创造性转化和创新性发展,是中国化时代化的马克思主义文化理论的最新成果,使马克思主义文化理论达到新高度。习近平文化思想的新成果、新高度... 详细信息

习近平文化思想是对马克思主义经典作家文化理论的继承、丰富和发展,是对中华优秀传统文化的创造性转化和创新性发展,是中国化时代化的马克思主义文化理论的最新成果,使马克思主义文化理论达到新高度。习近平文化思想的新成果、新高度充满理论创新性。文本认为,应从关于宣传思想文化工作战略定位的新概括,关于开辟马克思主义中国化时代化新境界必须遵循的原理,关于理论武装工作要在“真”与“化”上下功夫,关于明确意识形态建设的新重点,关于社会主义核心价值观的新阐发,关于文化自信的深刻阐发,关于文化建设必须遵循的原则,关于中华优秀传统文化的时代价值及其赓续的深刻阐发,关于提出构建中国特色哲学社会科学系统思想,关于新闻舆论工作意义、成效的重要论述,关于旗帜鲜明开展文艺批评的新论述,关于办好思政课的系统论述,关于精神文明建设的新坐标,关于人类文明互鉴的新倡议,关于网络文化建设的系统论述等方面理解习近平文化思想的理论创新。

关键词：习近平文化思想马克思主义中国化时代化文化自信创新性价值意蕴

Variations of widespread extreme cold and warm days in winter over China and their possible causes

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2022年第2期65卷 337-350页

作者： Zhiyan zuo Mingqian LI Ning AN Dong xiao State Key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesBeijing 100081China Department of Atmospheric and Oceanic Sciences/Institute of Atmospheric Sciences/IRDR-International Center of Excellence Fudan UniversityShanghai 200348China Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and TechnologyNanjing 210044China

The two leading modes of winter surface air temperature(SAT) over China during 1961–2017 are a spatially consistent pattern and a north-south dipole pattern. Based on the two leading modes, the characteristics of the extreme cold and warm days in the two patterns, defined by the standard deviation larger than 1.28 or smaller than-1.28 in the time series of the two leading modes, are analyzed. With the increase of winter SAT during 1961–2017, the number of spatially consistent extreme cold days decreased and their occurrence was restricted to late December to early January, whereas the number of spatially consistent extreme warm days increased significantly in January and February. Global warming is associated with an increase in the spatially consistent extreme warm days and a decrease in spatially consistent extreme cold days, but has little relation to the sum of extreme cold and warm days of either the spatially consistent or north-south dipole pattern. The Siberian High(SH) is the main factor controlling the sum of spatially consistent extreme warm and cold days. The strong(weak) SH before(after) the1990 s corresponds to an increase(decrease) in the sum of the spatially consistent extreme warm and cold days. The occurrences of extreme south-cold-north-warm and extreme south-warm-north-cold days are related to the north-south difference of the *** the center of the SH is in mid-high latitudes, the extreme south-warm-north-cold(south-cold-north-warm) days occur more(less) often. During the winters of 1961–2017, the total number of extreme cold and warm days of the north-south dipole pattern changes negligibly. The North Atlantic meridional overturning circulation(AMOC) may be the main factor affecting the sum of the extreme cold and warm days of the two types of SAT pattern in China.

关键词： Surface air temperature Extreme cold days Extreme warm days Siberian High North Atlantic meridional overturning circulation

Corrosion behavior of Cu/Al casting-rolled clad plates in different alkaline solution

在线全文

学校读者我要写书评

暂无评论

China Foundry 2021年第5期18卷 513-520页

作者： Yi-fan Zhang xiao-guang Yuan xiao-jiao zuo Hong-jun Huang Yu-lin Cheng School of Materials Science and Engineering Shenyang University of technologyShenyang 110870China

The effect of pH value and different kinds of anions on the corrosion behavior of Cu/Al casting-rolled clad plates in the alkaline solution was evaluated by means of scanning electron microscopy(SEM),energy dispersive spectroscopy(EDS),X-ray diffraction(XRD),weight loss analysis,3D confocal laser scanning microscopy(CLSM)and electrochemical *** show the corrosion mainly occurs on the aluminum *** corrosion resistance of the Cu/Al decreases as the pH value *** pH≥12,the dissolution of the film layer is faster than the passivation *** addition of Cl^(-)ions reduces the corrosion resistance of the Cu/Al clad plates,which leads to pitting *** higher the concentration of Cl^(-)ions,the more prone the pitting to *** addition of SO_(4)^(2-)ions causes the denudation of the *** corrosion resistance of the Cu/Al is better in the alkaline solution containing NO_(3)^(-)ions than that in the solution containing Cl^(-)ions or SO_(4)^(2-)*** adding SO_(4)^(2-),NO^(3)^(-)and Cl^(-)to the pure alkaline solution,the corrosion resistance of the Cu/Al clad plates decreases.

关键词： Cu/Al clad plates alkaline solution pH anions electrochemistry casting-rolled

Improvement in oxidation resistance of Cantor alloy through microstructure tailoring

在线全文

学校读者我要写书评

暂无评论

China Foundry 2022年第6期19卷 503-510页

作者： Bao-lin Pang Man Wang Yue-gang Shen xiao-li Xi zuo-ren Nie Collaborative Innovation Center of Capital Resource-Recycling Material Technology Faculty of Materials and ManufacturingBeijing University of TechnologyBeijing 100124China Key Laboratory of Advanced Functional Materials Ministry of EducationBeijing University of TechnologyBeijing 100124China National Engineering Laboratory for Industrial Big-data Application Technology Beijing University of TechnologyBeijing 100124China

A method of improving the oxidation resistance of Cantor alloy through microstructure tailoring was *** with distinctive microstructures were achieved by different annealing treatments on the cold-rolled Cantor *** test was then carried out on the various annealed samples at 800°C for 24 h in *** oxidation behavior was evaluated in terms of oxidation rate,surface and cross-section microstructure *** stratified oxide layers including outer Mn_(2)O_(3) and inner Cr_(2)O_(3) were observed in all the annealed samples,the thickness of Mn_(2)O_(3) and Cr_(2)O_(3) layers was ***,the samples exhibited different oxidation *** results indicate that the oxidation resistance of various annealed samples is closely related with grain size as well as twin density.

关键词： Cantor alloy annealing temperature grain size twins oxidation behavior

High-temperature oxidation behavior of a cast Ti-47.5Al-2.5V-1.0Cr-0.2Zr alloy

在线全文

学校读者我要写书评

暂无评论

China Foundry 2022年第5期19卷 443-454页

作者： Xue-jian lin Hong-jun Huang xiao-guang Yuan Yin-xiao Wang Bo-wen Zheng xiao-jiao zuo Ge Zhou School of Materials Science and Engineering Shenyang University of TechnologyShenyang 110870China

The oxidation behavior of the Ti-47.5Al-2.5V-1.0Cr-0.2Zr alloy at 900℃ was investigated at different oxidation times(5,20,60 and 100 h).The results show that the total weight gain of the alloy after 100 h at 900℃ oxidation is 9.1 g·m^(-2),and the oxidation rate decreases with oxidation *** oxides on the alloy surface are mainly TiO_(2) and Al_(2)O_(3).At the beginning of oxidation(5 h),the oxide film is relatively complete,thin,and the interface between the oxide layer and the matrix is virtually *** the end of oxidation(100 h),the thickness of the oxide film is expanded,cracking and spalling occur,and the spalling form is intra-film *** the same time,oxygen is mainly distributed in the oxide film and the oxygen content in the alloy substrate is reduced,confirming that the TiAl alloy has a certain oxidation stability at 900℃.From the outer surface of the oxide layer to the matrix,the TiO_(2) content increases and the Al_(2)O_(3) content *** proceeds to completion in this system via the dissolution and diffusion of O atom.

关键词： cast TiAl alloy high temperature oxidation oxidation film oxidation behavior

Mesenteric heterotopic pancreas in a pediatric patient: A case report and review of literature

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2018年第14期6卷 847-853页

作者： xiao-Bing Tang Min-Yi Liao Wei-lin Wang Yu-zuo Bai Department of Pediatric Surgery Shengjing HospitalChina Medical University

Heterotopic pancreas （HP） is a congenital anomaly defined as pancreatic tissue that has no contact with the orthotopic pancreas and its own duct system and vascular supply. The most common locations of HP are the upper gastrointestinal tract, specifically, the stomach, duodenum, and proximal jejunum. In-volvement of the mesentery is rare. Here, we describe a rare case of mesenteric heterotopic pancreas （MHP） in a 12-year-old girl who presented with acute abdomen. The patient underwent emergency laparotomy, and the mass and adjacent small bowel were resected. Results of the postoperative histopathologic examination confirmed the diagnosis of MHP. Observation of the patient for 12 mo postoperatively showed no evidence of recurrence. Preoperative diagnosis of HP is diffcult, even in a symptomatic patient. Increased awarenessand understanding of the image characteristics of MHP will aid in correct preoperative diagnosis and appropriate patient management.

关键词： Heterotopic pancreas Mesenteric Acute abdomen Computed tomography Magnetic resonance imaging Case report

Current and Voltage Mode Resistorless Universal Biquad Filter Using a Single CCCDTA

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 Journal of Electronics 2018年第6期27卷 1250-1257页

作者： lin Shaojiang zuo xiaohua DENG Xiangyi School of Mechanic and Electric Engineering Hubei Polytechnic University School of Chemistry and Chemical Engineering Hubei Polytechnic University

Current mode(CM) Single-input and multi-output(SIMO) and Voltage mode(VM) Multi-input and single-output(MISO) biquad filters are proposed. The presented configurations use one Current controlled current differencing transconductance amplifier(CCCDTA)and two capacitors without any external resistors, which is easy suited for integrated circuit fabrication. The currentmode filter can realize the second-order low pass, band pass, high pass and band stop responses *** the voltage-mode filter can realize all the standard filtering functions from the same structure. The natural frequency(ω) and quality factor(Q) of the filters can be controlled electronically by transconductance of the CCCDTA. Moreover, the proposed filters does not require any impedance matching due to its two input resistance can be independently tuned through the diverse external bias currents of CCCDTA. The influences of the CCCDTA non-idealities are also analyzed and both the active and passive sensitivities are considerably low. This design was simulated in PSPICE. Simulation results showed that their performances in power, bandwidth, out-band rejection and in-band ripple are better than the traditional. Additionally,the experiment results are provided in the paper.

关键词： Current-mode filter Voltage-mode filter CCCDTA Analog signal processing

Study on the optimal incident proton energy of ^(7)Li(p,n)^(7)Be neutron source for boron neutron capture 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

Nuclear Science and Techniques 2024年第3期35卷 170-180页

作者： Yi-Nan Zhu zuo-Kang lin Hai-Yan Yu Ye Dai Zhi-Min Dai xiao-Han Yu Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Science Beijing 100049China

Boron neutron capture therapy(BNCT)is recognized as a precise binary targeted radiotherapy technique that effectively eliminates tumors through the^(10)B(n,α)^(7)Li nuclear *** various neutron sources,accelerator-based sources have emerged as particularly promising for BNCT ***^(7)Li(p,n)^(7)Be reaction is highly regarded as a potential neutron source for BNCT,owing to its low threshold energy for the reaction,significant neutron yield,appropriate average neutron energy,and additional *** study utilized Monte Carlo simulations to model the physical interactions within a lithium target subjected to proton bombardment,including neutron moderation by an MgF_(2)moderator and subsequent BNCT dose analysis using a Snyder head *** study focused on calculating the yields of epithermal neutrons for various incident proton energies,finding an optimal energy at 2.7 ***,the Snyder head phantom was employed in dose simulations to validate the effectiveness of this specific incident energy when utilizing a^(7)Li(p,n)^(7)Be neutron source for BNCT purposes.

关键词： Boron neutron capture therapy ^(7)Li(p,n)7Be neutron source Incident proton energy Monte Carlo simulation

Making aviation green

在线全文

学校读者我要写书评

暂无评论

Advances in Manufacturing 2013年第1期1卷 42-49,43-49页

作者： zuo-Ming lin Aviation Industry Corporation of China

With rapid economic progress and tremendous advances of science and technology, awareness of environmental protection has become worldwide consensus. Saving energy, reducing emission and dealing with climate changes are global objectives. The aviation industry belongs to the manufacturing industry. Air transportation is a major con- sumer of natural resources and energy. Development of green technology in aviation manufacturing will have sig- nificant impacts on air transportation. On the basis of the international situation, this article focuses on the current development of green aviation manufacturing in China, depicting AVIC＇ s objectives and commitments to achieving this.

关键词： Green aviation Low carbon manufacturingEnergy saving Emission reduction