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极简跑鞋专用聚乳酸复合材料制备及性能研究

粘接 2025年第2期52卷 113-116页

作者：郭振东任贺杰延安大学体育学院陕西延安716000

为实现极简跑鞋的高效率生产,研究提出了一种聚乳酸/石墨烯复合材料,该材料以聚乳酸为主要原料,石墨烯为聚乳酸的改性剂,通过溶液浇铸法在不改变原材料化学性质的情况下实现共混。为验证该复合材料的有效性,研究通过XRD、FTIR试验,以及... 详细信息

为实现极简跑鞋的高效率生产,研究提出了一种聚乳酸/石墨烯复合材料,该材料以聚乳酸为主要原料,石墨烯为聚乳酸的改性剂,通过溶液浇铸法在不改变原材料化学性质的情况下实现共混。为验证该复合材料的有效性,研究通过XRD、FTIR试验,以及微观形貌分析、热稳定性、力学性能等手段对其综合性能进行测试。结果表明,在石墨烯和聚乳酸添加比例为0.005∶1的情况下,聚乳酸/石墨烯复合材料化学性能稳定,热稳定性较强且具有良好的力学性能,适用于极简跑鞋的生产加工。

关键词：聚乳酸石墨烯溶液浇铸法复合材料

不同产蛋期鸡舍环境颗粒物对小鼠致病损伤研究

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畜牧与兽医 2025年第1期57卷 37-42页

作者：蒲劼张诚崔欢陈召亮张磊刘静波郭振东西南科技大学生命科学与工程学院四川绵阳621010 军事科学院军事医学研究院军事兽医研究所吉林长春130122 河北农业大学动物医学学院河北保定071000

畜舍颗粒物可对畜禽和养殖场工人的呼吸系统造成损伤,本研究旨在探究不同产蛋期蛋鸡舍内环境颗粒物对小鼠的致病损伤效应。分别采集产蛋前期(17~30周)、产蛋高峰期(31~50周)和产蛋末期(大于50周)鸡舍内的环境颗粒物样品,制成悬液通过滴... 详细信息

畜舍颗粒物可对畜禽和养殖场工人的呼吸系统造成损伤,本研究旨在探究不同产蛋期蛋鸡舍内环境颗粒物对小鼠的致病损伤效应。分别采集产蛋前期(17~30周)、产蛋高峰期(31~50周)和产蛋末期(大于50周)鸡舍内的环境颗粒物样品,制成悬液通过滴鼻途径侵染BALB/c小鼠。将40只小鼠随机分为对照组、产蛋前期组、产蛋高峰期组和产蛋末期组,通过分析小鼠吸入不同产蛋期鸡舍内环境颗粒物后体重、肺指数和肺组织病理变化以及对多种细胞因子表达水平的影响,观察小鼠肺组织损伤情况。结果:随着产蛋周期的推移,空气颗粒物对小鼠的致病损伤效应逐渐增强,产蛋末期组肺指数在试验处理后第7天显著增加(P<0.001),为对照组的1.73倍;肺部病理切片显示,相较于对照组,产蛋高峰期组肺泡壁明显增厚,产蛋末期组肺部病理愈发加重,出现大量炎性细胞浸润;与对照组相比较,产蛋末期组肺泡灌洗液细胞因子白细胞介素-6(IL-6)、白细胞介素-10(IL-10)、肿瘤坏死因子-α(TNF-α)、肿瘤坏死因子-β(TNF-β)mRNA相对表达水平均显著上调(P<0.01),血清中细胞因子表达水平与肺泡灌洗液中细胞因子mRNA表达水平趋势一致。研究结果对了解蛋鸡舍内环境颗粒物对蛋鸡与养殖人员的健康影响具有指导意义,为制定防制措施提供科学依据。

关键词：不同产蛋期颗粒物肺部病理致病性养殖人员

Absolute band alignment at semiconductor-water interfaces using explicit and implicit descriptions for liquid water

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npj Computational Materials 2019年第1期5卷 256-261页

作者： Nicolas G.Hörmann zhendong guo Francesco Ambrosio Oliviero Andreussi Alfredo Pasquarello Nicola Marzari Theory and Simulation of Materials(THEOS) and National Centre for Computational Design and Discovery of Novel Materials(MARVEL)École Polytechnique Fédérale de Lausanne1015 LausanneSwitzerland Chair of Theoretical Chemistry Technische Universität München85748 GarchingGermany Chaire de Simulationàl’Echelle Atomique(CSEA) École Polytechnique Fédérale de Lausanne1015 LausanneSwitzerland Department of Physics University of North TexasDentonTX 76207USA

Quantum mechanical simulations that include the effects of the liquid environment are highly relevant for the characterization of solid-liquid interfaces,which is crucial for the design of a wide range of *** this work we present a rigorous and systematic study of the band alignment of semiconductors in aqueous solutions by contrasting a range of hybrid explicit/implicit models against explicit atomistic simulations based on density-functional *** find that consistent results are obtained provided that the first solvation shell is treated ***,the first molecular layer of explicit water is only relevant for the pristine surfaces without dissociatively adsorbed water,hinting at the importance of saturating the surface with quantum mechanical *** referencing the averaged electrostatic potentials of explicit and implicit water against vacuum,we provide absolute alignments,finding maximal differences of only~0.1–0.2 ***,the implicit reference potential is shown to exhibit an intrinsic offset of−0.33 V with respect to vacuum,which is traced back to the absence of an explicit water surface in the implicit *** results pave the way for accurate simulations of solid-liquid interfaces using minimalistic explicit/implicit models.

关键词： theory implicit explicit

CGCS2000坐标转换中控制点外延和中央子午线的影响分析

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山西建筑 2025年第3期51卷 158-161,188页

作者：钱秋艳安艳辉孔宪森郭震冬南通市新城市规划设计服务有限公司江苏南通226000 江苏省测绘工程院江苏南京210013

城市快速发展加快了已有测绘基础设施的破坏,机构改革的推进对成果共享提出了更高要求。针对平面四参数转换过程中参数计算点控制外扩能力、不同等级控制点选取、未知坐标系成果坐标转换工作中央子午线的选取,对转换参数的影响等地理信... 详细信息

城市快速发展加快了已有测绘基础设施的破坏,机构改革的推进对成果共享提出了更高要求。针对平面四参数转换过程中参数计算点控制外扩能力、不同等级控制点选取、未知坐标系成果坐标转换工作中央子午线的选取,对转换参数的影响等地理信息成果坐标转换工作中的特殊情况进行了详细分析,并利用江苏某区域实测成果进行对比实验。研究成果对非传统测绘、国土等行业地理信息成果及历史存量地理信息成果的坐标转换工作具有参考价值。

关键词：平面四参数参数计算外延中央子午线精度外符合

考虑椭圆孔偏转角组合的凹槽叶顶气热性能优化研究

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西安交通大学学报 2023年第10期57卷 99-110页

作者：郭嘉杰梁崇治郭振东宋立明李军西安交通大学能源与动力工程学院西安710049 东方汽轮机有限公司电站服务事业部四川德阳618000

为进一步提高凹槽叶顶的冷却与气动性能,基于Kriging代理模型优化算法,耦合商业CFD分析软件,引入椭圆冷却孔型,设计了凹槽叶顶冷却孔组合偏转角参数化方法,并建立了组合偏转角自动优化框架。以实验条件下的GE-E3首级动叶的叶顶冷却孔布... 详细信息

为进一步提高凹槽叶顶的冷却与气动性能,基于Kriging代理模型优化算法,耦合商业CFD分析软件,引入椭圆冷却孔型,设计了凹槽叶顶冷却孔组合偏转角参数化方法,并建立了组合偏转角自动优化框架。以实验条件下的GE-E3首级动叶的叶顶冷却孔布局为研究对象,兼顾冷却与气动两方面性能,开展了凹槽叶顶的冷却孔优化设计与气热分析。研究结果显示,在凹槽叶顶布置吸力面朝向与凹槽尾缘朝向的组合偏角气膜孔能有效增强气膜的贴壁性能,扩大气膜的覆盖范围,同时引导了射流向凹槽尾缘堆积,提升了刮削涡对泄漏流的阻塞作用,有效降低了泄漏流量。椭圆孔依靠低曲率的长轴边出流,相较于圆形孔进一步扩大了气膜覆盖范围并提升了贴壁性能,使凹槽尾缘的流线堆积效应相应增强,进一步地减少了泄漏流量。圆形孔优化结构相比参考结构的气膜冷却效率提高了331.7%,泄漏流量相对减少了1.641%;椭圆孔优化结构的气膜冷却效率提升了565.1%,泄漏流量相对减少率为2.063%。

关键词：气膜冷却凹槽叶顶全局优化算法

Rapid screening of SARS-CoV-2 inhibitors via ratiometric fluorescence of RBD–ACE2 complexes in living cells by competitive binding

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Acta Pharmaceutica Sinica B 2022年第9期12卷 3739-3742页

作者： Lu Miao Wei Zhou Chunyu Yan Yuebin Zhang Qinglong Qiao Xuelian Zhou Yingzhu Chen Guangying Wang zhendong guo Jun Liu Hailong Piao Xia Pan Mengxue Yan Weijie Zhao guohui Li Yueqing Li Zhaochao Xu CAS Key Laboratory of Separation Science for Analytical Chemistry Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China State Key Laboratory of Fine Chemicals Department of Pharmaceutical SciencesSchool of Chemical EngineeringDalian University of TechnologyDalian 116024China State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China Institute of Military Veterinary Science The Academy of Military Medical Science of PLAChangchun 130000China

To the Editor:The current coronavirus disease-19(COVID-19)pandemic spurs the development of antiviral drugs for SARS-CoV-2,as the number of patients with viral infections continues to rise globally in the context of widespread *** the interaction between the receptor binding domain(RBD)of SARS-CoV-2 spike protein and the host cell ACE2 is a promising therapeutic strategy to effectively inhibit viral entry.

关键词： SARS-CoV-2 RBD–ACE2 interaction Inhibitors screening Live-cell imaging

169 patients with postoperative breast cancer on exercising the function of limbs and investigating quality of life:a clinical study

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The Chinese-German Journal of Clinical Oncology 2010年第10期9卷 590-593页

作者： Xiaodong Xie Zhaozhe Liu Shuxian Qu Fang guo zhendong Zheng Yongye Liu Min Song Xue Bai Department of Oncology General Hospital of Shenyang Military Region Shenyang 110840 China

Objective:The aim of this study was to observe the physical training influence on the limbs of postoperative breast cancer patients with adjuvant chemotherapy and do dual-response quality of life(QOL) according to clinical characteristics of ***:from February 2007 to December 2008,169 patients with postoperative breast cancer were *** put all the patients into two groups randomly,including 80 patients in the treatment group and 89 patients in the control *** the cycle of chemotherapy has been completed or on the 28th day postoperatively,all the patients need to be measured the function of upper *** patients in the treatment group perform the rehabilitative training by our rehabilitation gymnastics,and the patients in the control group perform the rehabilitative training by *** 6 cycles of adjuvant chemotherapy have been completed,we evaluated the differences of the function of upper limbs in *** the same time,we hand out the QOL questionnaire to patients and their doctors for doing the two-way ***:Compared with patients in control group,patients in treatment group have better in the abductive angle of shoulders and myodynamia(P = 0.000).By analysis on 156(92.3%) questionnaires,we found that the match rate of doctors and patients with physiological functions and physical symptoms were better than mentation and *** better match rate between doctors and patients in QOL questionnaires suggested that the QOL of patients would be improved in the higher ***:Exercising the function of limbs in early could be beneficial to the patients with postoperative breast cancer and effectively improve patient's ***,we put doctors' questionnaires in the assessment of patients' QOL,and the results show that the assessment of patients' QOL is more objective and complete.

关键词： breast cancer rehabilitation therapy quality of life (QOL) questionnaire