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中国公民知政权的实现困境及其消解

东北大学学报（社会科学版） 2009年第5期11卷 423-426页

作者：张平张先科东北大学文法学院辽宁沈阳110004

知政权是公民的一项重要政治权利,是中国民主政治的基础和体现。在实现中国公民知政权的过程中,存在着诸如知政权的相关法律制度供给不足、政府部门漠视公民的知政权以及公民权利意识淡薄等困境,导致公民的知政权得不到充分、有效地实... 详细信息

知政权是公民的一项重要政治权利,是中国民主政治的基础和体现。在实现中国公民知政权的过程中,存在着诸如知政权的相关法律制度供给不足、政府部门漠视公民的知政权以及公民权利意识淡薄等困境,导致公民的知政权得不到充分、有效地实现。为此,应将知政权的理论与中国公民知政权的实践相结合,从构建和完善公民知政权的法律保障体系、转变政府部门的执政理念以及培养公民权利意识三个方面消解公民知政权的实现困境。

关键词：知政权制度保证执政理念公民权利意识

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

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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

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电子元器件电镀专用处理剂的研制

天津职业院校联合学报 2008年第2期10卷 11-16页

作者：张克贤天津现代职业技术学院天津市300222

电子元器件电镀专用处理剂应用于电子元器件电镀自动生产线,其组成为前、后处理剂两部分,同时使用于生产线的不同工序。电子元器件生产的自动化要求高水平专用处理剂为其配套。通过研制专用处理剂满足电子元器件电镀自动生产线要求,并... 详细信息

电子元器件电镀专用处理剂应用于电子元器件电镀自动生产线,其组成为前、后处理剂两部分,同时使用于生产线的不同工序。电子元器件生产的自动化要求高水平专用处理剂为其配套。通过研制专用处理剂满足电子元器件电镀自动生产线要求,并达到国内先进水平,同时进行专用处理剂的腐蚀性实验,列出了酸浓度与腐蚀度关系和酸浓度与溶锡量的关系。

关键词：电子元器件处理剂研制腐蚀性实验

咸味食品香精中食盐含量测定存在问题和解决方法

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食品研究与开发 2014年第10期35卷 79-81页

作者：张克贤孙勇民天津现代职业技术学院天津300300

本文介绍的食盐含量的测定方法不改变标准方法,将样品提前进行处理再进行水定容,使实验能够顺利完成。空白加标回收率的计算结果均大于98%,标准偏差(SD)和相对标准偏差(RSD)分别低于0.07%和1.1%。通过对分析方法验证符合标准要求,该方... 详细信息

本文介绍的食盐含量的测定方法不改变标准方法,将样品提前进行处理再进行水定容,使实验能够顺利完成。空白加标回收率的计算结果均大于98%,标准偏差(SD)和相对标准偏差(RSD)分别低于0.07%和1.1%。通过对分析方法验证符合标准要求,该方法结果准确,前处理样品对测试结果无影响。

关键词：食盐含量前处理测定方法验证

Potassium ions and cyano group modified g-C3N4 for effective generation of H2O2 through two-electron oxygen reduction

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Science China Chemistry 2025年第1期68卷 192-200页

作者： Dongying Wang Shulan Pu Yongmin Chen ke Lei Yujie Duan Linjiao Mao Xuhui Zeng Xi Luo Yuntao zhang Yuqin Dong Jin Zhong zhang Yan Sun School of Mechanical Engineering Chengdu University Department of Chemistry and Biochemistry University of California

Potassium ions （K+） doped graphitic carbon nitride （g-C3N4） was prepared by a thermal etching method using potassium hydroxide （KOH） as an ion *** transform infrared spectroscopy （FTIR） and X-ray photoelectron spectroscopy （XPS）results showed that the generation of the cyano group was detected while introducing K+.Under simulated sunlight irradiation,the sample with a K+doping amount of 10%showed the highest hydrogen peroxide （H2O2） generation rate of2,140.2μmol *** apparent quantum yield （AQY） at 400 nm and the solar-to-chemical conversion （SCC） are 4.35%and1.23%,respectively.K+acted as a bridge between g-C3N4layers,which enhanced charge transfer ***,the cyano group enhanced the adsorption capacity of protons （H+） and promoted the yield of *** catalyst exhibited excellent photocatalytic stability based on four-cycle *** addition,a mechanism study showed that superoxide radicals （·O2-）were the most important active species in the reaction *** production of H2O2was achieved through consecutive single-electron *** study deepens the understanding of the oxygen reduction reaction process and opens up a new venue for improving H2O2generation.

关键词： photocatalysis hydrogen peroxide oxygen reduction reaction potassium doping cyano group

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高效环保型海面溢油分散剂的研制

精细与专用化学品 2010年第7期18卷 56-60页

作者：张克贤天津现代职业技术学院天津300222

高效环保型海面溢油分散剂可以有效地消除海洋溢油污染,本课题研制的高效环保型溢油分散剂使用易分解、低毒性的酯型表面活性剂作乳化分散剂,溶剂选择无毒的油酸酯。既满足了乳化分散性,又确保对环境无污染。所制备的高效环保型海面溢... 详细信息

高效环保型海面溢油分散剂可以有效地消除海洋溢油污染,本课题研制的高效环保型溢油分散剂使用易分解、低毒性的酯型表面活性剂作乳化分散剂,溶剂选择无毒的油酸酯。既满足了乳化分散性,又确保对环境无污染。所制备的高效环保型海面溢油分散剂的技术和性能指标达到国家标准GB 18188.1-2000的要求。

关键词：高效环保溢油分散剂无污染

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新型稠油采收降黏助剂的研制和应用

精细与专用化学品 2010年第8期18卷 13-17页

作者：张克贤天津现代职业技术学院天津300222

研制了稠油采收降黏助剂,表面活性剂单体选用了主要成分为木质素磺酸盐的造纸废液作为分散剂,减少了环境污染。配方定型和配方复配中,将降黏剂改为两剂型,有效利用了溶解热。对该降黏剂进行了稠油乳化降黏实验,稠油黏度由8371mPa·s降至... 详细信息

研制了稠油采收降黏助剂,表面活性剂单体选用了主要成分为木质素磺酸盐的造纸废液作为分散剂,减少了环境污染。配方定型和配方复配中,将降黏剂改为两剂型,有效利用了溶解热。对该降黏剂进行了稠油乳化降黏实验,稠油黏度由8371mPa·s降至23.2 mPa·s,总降黏率达99%以上。室内和现场实验效果良好,解决了稠油采收的难题,提高了稠油油藏的采收率。

关键词：造纸废液稠油降黏助剂降黏率

An internally linked dibenzihexaphyrin

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Science China Chemistry 2025年

作者： Zhaohui Zong Xiaotong zhang Zhe Liu Guangliu Ran Wenkai zhang xiansheng ke College of Chemistry Beijing Normal University School of Physics and Astronomy Applied Optics Beijing Area Major Laboratory Center for Advanced Quantum Studies Beijing Normal University key Laboratory of Multiscale Spin Physics Ministry of Education Beijing Normal University

Hexaphyrins are one of the most studied expanded porphyrins that show intriguing electronic structure and coordination abilities in the past decades. However, core-modified hexaphyrins especially for benzene-replaced hexaphyrins are much less ***, we revisit the dibenzihexaphyrin system and demonstrate how to achieve the hexaphyrin-like organometallic nature of a benzene-replaced expanded porphyrin. For the “true” di-m-benzihexaphyrin 2, metal complex with anticipated CCNN coordination is not realized probably due to the steric hindrance. Further, we synthesized an internally linked dibenzihexaphyrin (3)with a direct carbon–carbon bond between two phenylenes. As prepared, 3 has a strained biphenyl unit and can effectively coordinate two Cu(III) ions with CCNN coordination. This sharp contrast underscores the critical importance of the formed preorganized corrole-like adj-CCNN cavities after linking two flanking phenylenes. 3 can also act as a bidentate ligand like traditional hexaphyrin, enabling the formation of an even more strained bis-Rh(I) complex. The electronic structures and photophysical properties of the free base and metal complexes are systematically studied by steady state absorption and fstransient absorptions (fs-TA) spectroscopies, as well as DFTcalculations. Notably, 3 can be regarded as a hexaphyrin-sized backto-back fused bis-dicarbacorrole, which stands as the smallest fused carbaporphyrinoid array prepared to date.

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Insights into spinal muscular atrophy from molecular biomarkers

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Neural Regeneration Research 2025年第7期20卷 1849-1863页

作者： Xiaodong Xing Xinzhu Liu xiandeng Li Mi Li xian Wu Xiaohui Huang Ajing Xu Yan Liu Jian zhang Department of Clinical Pharmacy Xinhua HospitalShanghai Jiao Tong University School of MedicineShanghaiChina College of Pharmacy Chongqing Medical UniversityChongqingChina

Spinal muscular atrophy is a devastating motor neuron disease characterized by severe cases of fatal muscle *** is one of the most common genetic causes of mortality among infants aged less than 2 *** research is currently receiving more attention,and new candidate biomarkers are constantly being *** review initially discusses the evaluation methods commonly used in clinical practice while briefly outlining their respective pros and *** also describe recent advancements in research and the clinical significance of molecular biomarkers for spinal muscular atrophy,which are classified as either specific or non-specific *** review provides new insights into the pathogenesis of spinal muscular atrophy,the mechanism of biomarkers in response to drug-modified therapies,the selection of biomarker candidates,and would promote the development of future ***,the successful utilization of biomarkers may facilitate the implementation of gene-targeting treatments for patients with spinal muscular atrophy.

关键词： biomarkers disease progression gene-targeting therapy neurofilaments Nusinersen spinal muscular atrophy(SMA) survival motor neuron therapeutic evaluation treatment outcomes