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Organosilicon leather coating technology based on carbon peak strategy

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Journal of Leather Science and Engineering 2022年第1期4卷 369-379页

作者： Wenkai Wang Haojun Fan lijiang song Zhenya Wang Heng Li Jun Xiang Qiang Huang Xiangquan Chen Key Laboratory of Leather Chemistry and Engineering of Ministry of Education Sichuan UniversityChengdu 610065China Department of Chemistry University of WarwickCoventry CV47ALUK Chengdu Guibao Science and Technology Co.Ltd Chengdu 610041China.

Based on the demand of carbon peak and carbon emission reduction strategy, divinyl-terminated polydimethyl-siloxane (ViPDMSVi), poly(methylhydrosiloxane) (PMHS), divinyl-terminated polymethylvinylsiloxane (ViPMVSVi), and fumed silica were used as primary raw materials, polydimethylsiloxane (PDMS) synthetic leather coating was in situ constructed by thermally induced hydrosilylation polymerization on the synthetic leather substrate. The effect of the viscosity of ViPDMSVi, the active hydrogen content of PMHS, the molar ratio of vinyl groups to active hydrogen, the dosage of ViPMVSVi and fumed silica on the performance of PDMS polymer coating, including mechanical properties, cold resistance, flexural resistance, abrasion resistance, hydrophobic and anti-fouling properties were investigated. The results show that ViPDMSVi with high vinyl content and PMHS with low active hydrogen content is more conducive to obtaining organosilicon coating with better mechanical properties, the optimized dosage of ViPMVSVi and fumed silica was 7 wt% and 40 wt%, respectively. In this case, the tensile strength and the broken elongation of the PDMS polymer coating reached 5.96 MPa and 481%, showing reasonable mechanical properties for leather coating. Compared with polyurethane based or polyvinyl chloride based synthetic leather, the silicon based synthetic leather prepared by this method exhibits excellent cold resistance, abrasion resistance, super hydrophobicity, and anti-fouling characteristics.

关键词： PDMS polymer coating Synthetic leather In situ hydrosilylation Coating performance Carbon peak strategy

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植物多酚研究与利用的意义及发展趋势

化学进展 2000年第2期12卷 161-170页

作者：宋立江狄莹石碧四川大学轻工与食品学院成都610065

植物多酚 (植物单宁 )是一类广泛存在于植物体内的重要的天然产物。多年来它们一直用于许多传统工业领域如制革、石油开采和木材胶粘剂的生产。近 30年来 ,随着植物多酚化学的发展 ,植物多酚的化学结构和性质已被深入揭示。根据美国化... 详细信息

植物多酚 (植物单宁 )是一类广泛存在于植物体内的重要的天然产物。多年来它们一直用于许多传统工业领域如制革、石油开采和木材胶粘剂的生产。近 30年来 ,随着植物多酚化学的发展 ,植物多酚的化学结构和性质已被深入揭示。根据美国化学文摘 (CA)近30年相关文献资料的统计分析 ,阐述了植物多酚化学的发展状况及其作为一类丰富的可再生绿色资源的利用情况 ,讨论了植物多酚化学的研究发展趋势和广阔的应用前景。

关键词：天然产物植物多酚研究利用

人力资本、企业制度与城市规模对农民工工资的影响——基于重庆市农民工工资调查研究

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重庆工商大学学报（社会科学版） 2019年第1期36卷 29-36页

作者：潘松李江华东师范大学经济学院上海200062

通过重庆市农民工的问卷调查资料分析,本文构建了农民工工资决定模型,并利用最小二乘法和分位数回归法对农民工工资的影响因素进行计量分析。研究发现,人力资本中的受教育程度、务工年限、就业培训等变量对农民工工资有显著的正向影响,... 详细信息

通过重庆市农民工的问卷调查资料分析,本文构建了农民工工资决定模型,并利用最小二乘法和分位数回归法对农民工工资的影响因素进行计量分析。研究发现,人力资本中的受教育程度、务工年限、就业培训等变量对农民工工资有显著的正向影响,性别和婚姻状况也有显著影响;企业制度中的是否签订劳动合同对中低收入群体有显著影响,对高收入群体没有显著影响,企业所属行业对工资有显著影响;城市规模对农民工工资有一定影响,特大城市农民工工资显著高于城镇,大城市农民工工资低于特大城市并显著高于城镇,中小城市和城镇的农民工工资没有显著差别。

关键词：人力资本企业制度城市规模农民工工资

环氧树脂与胺类固化反应统一动力学方程的假设(英文)

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哈尔滨工业大学学报 1987年第4期 133-135页

作者：胡立江宋名实哈尔滨工业大学应用化学系哈尔滨工业大学应用化学系

Numbers of chemists at home and abroad have long since been devoted to the research on the mechanism of the curing reaction of epoxy resin with amine and come to different conclusions. From these conclusions three typical mechanisms of the reaction can be summed up: second-order, third-order and both competitive reactions presented simutaneously in a system. In this paper, these three typical mechanisms of the reaction are united by two assumed macroscopic kinetic equations.

关键词： Epoxy amine Kinetic curing.

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计算机在固化反应中的应用

哈尔滨工业大学学报 1986年第4期 115-116页

作者：胡立江宋名实哈尔滨工业大学应用化学系

Kinetic equations of the curing reaction of diepoxide with hexamine（at 60℃, 75℃ and 90℃） can be assumed as follows: dp/dt=k1（2N0′）2（1-p）（1-rp-rpq）（c+rp+rpq）（1） dpq/dt=k2（2N0′）2（p-pq）（1-rp-rpq）（c+rp+rpq）（2） Here,the mechanism of both the primary and the secondary amination with diepoxide is considered a third-order mechanism.

关键词： Diepoxide hexamine kinetics curing.

No generality in biodiversity-productivity relationships along elevation in temperate and subtropical forest landscapes

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Forest Ecosystems 2024年第3期11卷 255-265页

作者： Jiayun Zou Yahuang Luo Rupert Seidl Dominik Thom Jie Liu Lisa Geres Tobias Richter Linjiang Ye Wei Zheng Liangliang Ma Jie song Kun Xu Dezhu Li Lianming Gao Sebastian Seibold Ecosystem Dynamics and Forest Management Research Group School of Life SciencesTechnical University of MunichHans-Carl-von-Carlowitz-Platz 285354FreisingGermany State Key Laboratory of Plant Diversity and Specialty Crops Kunming Institute of BotanyChinese Academy of SciencesKunming650201YunnanChina Germplasm Bank of Wild Species Kunming Institute of BotanyChinese Academy of SciencesKunming650201YunnanChina lijiang Forest Biodiversity National Observation and Research Station Kunming Institute of BotanyChinese Academy of SciencesLijiang674100China Berchtesgaden National Park Doktorberg 683471Germany Gund Institute for Environment University of Vermont617 Main StreetBurlingtonVT 1105405USA Faculty of Biological Sciences Institute for EcologyEvolution and DiversityConservation BiologyGoethe University FrankfurtFrankfurt am MainGermany University of Chinese Academy of Sciences Beijing10049China TUD Dresden University of Technology Forest ZoologyPienner Str.701737TharandtGermany

An improved understanding of biodiversity-productivity relationships(BPRs)along environmental gradients is crucial for effective ecosystem management and biodiversity *** stress-gradient hypothesis suggests that BPRs are stronger in stressful environments compared to more favorable ***,there is limited knowledge regarding the variation of BPRs along elevational gradients and their generality across different *** study how BPRs change with elevation,we harnessed inventory data on 6,431 trees from152 plots surveyed twice in eight to ten year intervals in mountain forests of temperate Europe and subtropical *** quantified the relationship between aboveground productivity and different biodiversity measures,including taxonomic,functional,and phylogenetic *** elucidate the processes underlying BPRs,we studied the variation of different functional traits along elevation across *** found no general pattern of BPRs across landscapes and *** were neutral for all biodiversity measures in temperate forests,and negative for taxonomic and functional diversity in subtropical *** were largely congruent between taxonomic,functional and phylogenetic *** found only weak support for the stress-gradient hypothesis,with BPRs turning from negative to positive(effect not significant)close to the tree line in subtropical *** temperate forests,however,elevation patterns were strongly modulated by species identity effects as influenced by specific *** effect of traits such as community-weighted mean of maximum plant height and wood density on productivity was congruent across *** study highlights the context-dependence of BPRs across elevation gradients and *** traits are key modulating factors of BPRs and should be considered more explicitly in studies of the functional role of ***,our findings highlight that potential trade-offs be

关键词： Biodiversity-ecosystem functioning Climate mitigation Elevation gradients Forest management Forest productivity Functional traits Nature conservation Phylogenetic diversity

基于“胞脉络于心”探讨绞股蓝通过METTL3介导RNA m6A修饰调控糖酵解途径共治动脉粥样硬化与卵巢癌的理论研究

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中华中医药学刊 2024年第4期42卷 180-183,I0038页

作者：孙小扉王莹闵冬雨赵佼王华文李政杨莹赵卓周立江宋囡辽宁中医药大学中西医结合学院辽宁沈阳110847 辽宁中医药大学中医脏象理论及应用教育部重点实验室辽宁沈阳110847 辽宁中医药大学附属医院辽宁沈阳110032 辽宁省肿瘤医院辽宁沈阳110801 辽宁中医药大学医学检验学院辽宁沈阳110847

心血管病和癌症,是导致人类患病和死亡的主要原因。研究发现,二者存在潜在联系。从中医角度而言,动脉粥样硬化(atherosclerosis,AS)病位在血管,与奇恒之腑“脉”对应,卵巢癌以脏腑功能紊乱、冲任失调为本,邪毒内生为标,阻于胞宫所致,又... 详细信息

心血管病和癌症,是导致人类患病和死亡的主要原因。研究发现,二者存在潜在联系。从中医角度而言,动脉粥样硬化(atherosclerosis,AS)病位在血管,与奇恒之腑“脉”对应,卵巢癌以脏腑功能紊乱、冲任失调为本,邪毒内生为标,阻于胞宫所致,又《素问·评热病论篇》曰:“胞脉者,属心而络于胞中”。可见,两种疾病可以“脉”为桥梁构建联系。绞股蓝化痰止咳,健脾理气,益气活血,解毒利湿,具有调血脂、抗衰老、调节机体免疫以及抗肿瘤等多种药理作用,在心血管系统与肿瘤领域疾病中疗效显著。N 6-甲基腺苷(N6-methyladenosine,m6A)甲基化修饰是真核细胞mRNA最常见的一种表观遗传修饰方式。m6A甲基化修饰通过调控修饰mRNA,广泛参与细胞内RNA的许多生物学行为,从而影响疾病进展与肿瘤的发生。基于“胞脉络于心”理论,以中医异病同治观点为依据,构建“药物-成分-靶点”网络,以METTL3介导RNA m6A修饰调控糖酵解途径为切入点,对绞股蓝共治AS与卵巢癌的中医内涵及现代药理作用予以探讨。

关键词：绞股蓝 m6A甲基化卵巢癌动脉粥样硬化糖酵解

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Nanomedicine for tumor therapy-current status and challenges

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Journal of Chinese Pharmaceutical Sciences 2021年第5期30卷 359-380页

作者： Jinglei Wang Ke song Hao Pan Yang Liu Dazhuang Wang lijiang Chen Liaoning Key Laboratory of New Drug Research&Development School of Pharmaceutical ScienceLiaoning UniversityShenyangl 10036China

The field of nanomedicine in controlled drug delivery systems, especially for tumor targeting, has tremendously progressed over the past decades because of its plentiful benefits, such as biocompatibility, stability in blood circulation, and ability to reduce side effects. Although a large number of relevant papers are published every year, few nanodrugs are available for clinical treatment. The present review aimed to explore the barriers in nanomedicine delivery and tumor targeting. Rational design of nanomedicine should consider not only tumor heterogeneity, in vivo metabolism, and physicochemical properties, but also more efficient innovations in particulate formulations for clinical application.

关键词： Nanomedicine Tumor heterogeneity Nano-delivery Enhanced permeability and retention effects

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智能泊车辅助系统驾驶体验测评指标构建

汽车工程学报 2024年第3期14卷 387-394页

作者：竹利江邹波李林学袁圆马媛媛宋斌周汉彪中国汽车工程研究院股份有限公司重庆401122 重庆铃耀汽车有限公司重庆401320 重庆交通大学重庆400074

针对当前行业内智能泊车辅助系统用户驾驶体验测试评价指标不完善的问题,提出了驾驶体验主客观测评指标并进行了试验验证及相关性分析。基于智能泊车辅助系统的功能逻辑,构建了智能泊车辅助系统驾驶体验闭环控制系统。结合闭环系统,采... 详细信息

针对当前行业内智能泊车辅助系统用户驾驶体验测试评价指标不完善的问题,提出了驾驶体验主客观测评指标并进行了试验验证及相关性分析。基于智能泊车辅助系统的功能逻辑,构建了智能泊车辅助系统驾驶体验闭环控制系统。结合闭环系统,采用体验阶梯金字塔模型构建主观评价指标体系,还采用GSM模型进行了客观指标构建。针对7款车型进行了实车测试,并利用皮尔逊相关性系数进行了分析。试验结果表明,所提出的评价指标可适用于测试对象的驾驶体验测评,且主客观相关性系数全部>0.5,能为智能泊车辅助系统的设计和测评提供参考。

关键词：智能泊车辅助系统驾驶体验主观评价客观测试相关性分析