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New insights in nano-copper chromite catalyzing ultrafine AP:Evaluation of dispersity and mixing uniformity

Defence Technology（防务技术） 2024年第2期32卷 120-133页

作者： Yong Kou Peng Luo Lei Xiao yanping xin Guangpu Zhang Yubing Hu Junqing Yang Hongxu Gao Fengqi Zhao Wei Jiang Gazi Hao National Special Superfine Powder Engineering Research Center of China School of Chemistry and Chemical EngineeringNanjing University of Science and TechnologyNanjing210094China Xi'an North Huian Chemical Industry Co.Ltd Xi'an710302China Xi'an Modern Chemistry Research Institute Xi'an710065China

Improving the application of nanomaterials has always been a research hotspot in the field of energetic materials(EMs)due to their obvious catalytic effect on the EMs,especially the uniformly dispersed ***,few studies have reported the dispersion of *** this study,the dispersity and mixing uniformity of nano-CuCr_(2)O_(4)was evaluated based on the difference of solid UV light absorption between the nano-catalytic materials and *** nano-CuCr_(2)O_(4)/ultrafine AP composites with different dispersity of nano-CuCr_(2)O_(4)were prepared by manual grinding and mechanical grinding with different grinding strength and griding *** then,the absorbance of different samples at 212 nm was obtained by solid UV testing due to the high repeatability of the absorbance at 210-214 nm for three parallel experiments,and the dispersity of different samples was calculated through the established difference ***,the samples were characterized by XRD,IR,SEM,EDS,DSC and TG-MS,which confirmed that different mixing methods did not change the structure of the samples(XRD and IR),and the mixing uniformity improved with the increase of grinding strength and grinding time(SEM and EDS).The scientificity and feasibility of the difference equation were further verified by *** dispersity of nano-CuCr_(2)O_(4)exhibits a positive intrinsic relationship with its catalytic performance,and the uniformly dispersed nano-CuCr_(2)O_(4)significantly reduces the thermal decomposition temperature of ultrafine AP from 367.7 to 338.8℃.The TG-MS patterns show that the dispersed nano-CuCr_(2)O_(4)advanced the thermal decomposition process of ultrafine AP by about 700 s,especially in the high temperature decomposition stage,and the more concentrated energy release characteristic is beneficial to further enhance the energy performance of AP-based *** above conclusions show that the evaluation method of dispersity based on solid UV curves could pro

关键词： Nano-CuCr_(2)O_(4) Ultrafine AP Dispersity UVeVis diffuse reflectance spectroscopy Thermal decomposition

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油气类专业“专创融合”视角下实践教学体系的构建与实施

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创新创业理论研究与实践 2024年第10期7卷 104-106页

作者：郭瑾辛艳萍李翠山东石油化工学院

随着时代的发展，创新驱动已经成为经济增长和转型的强大引擎。该文根据山东石油化工学院的办学定位，以油气类专业为例，分析了实践教学体系的现状和存在问题，基于“专创融合”，按照应用型人才培养要求，构建了油气类专业“两贯穿三... 详细信息

随着时代的发展，创新驱动已经成为经济增长和转型的强大引擎。该文根据山东石油化工学院的办学定位，以油气类专业为例，分析了实践教学体系的现状和存在问题，基于“专创融合”，按照应用型人才培养要求，构建了油气类专业“两贯穿三层次四能力”的实践教学体系，将实践教学划分为基础实践教育、综合实践教育、竞赛牵引实践教育3个层次，学生中心理念和课程思政教育贯穿实践教学全程，达成培养学生工程能力、实践能力、创新能力、综合能力的目标，为新工科背景下油气类专业实践教学体系的改革提供理论依据和实践模式参考，为实现应用型人才培养目标提供支撑。

关键词：油气类实践教学 “专创融合” 体系构建创新创业能力培养

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Effect of Refrigerant on the Performance of a C3/MRC Liquefaction Process

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Fluid Dynamics & Materials Processing 2023年第1期19卷 25-36页

作者： Xiao Wu Zhaoting Wang Longfei Dong yanping xin Tianshu Yu Shandong Institute of Petroleum and Chemical Technology Dongying257061China

The Mixed Refrigerant(MR)component is an important factor influencing the performances of natural gas lique-faction ***,there is a lack of systematic research about the utilization of propane pre-cooled(C3/MRC).In this paper,this mixed refrigerant cycle liquefaction process is simulated using the HYSYS software and the main influential parameters involved in the process are varied to analyze their influence on the liquefaction rate and power *** results show that an effective way for lowering the power consumption of the compressor consists of reducing the flow through the compressor through optimization of the percentage of mixed *** power consumption of the compressor in the hybrid refrigeration process is affected by both flow and pressure *** specific power consumption can be reduced by increasing the flow and decreasing the pressure ratio at the same *** increase in refrigerant pressure at the high-pressure end can significantly mitigate the energy loss of the heat exchanger and compressor.

关键词： Refrigerant C3/MRC process liquefaction performance power consumption pressure ratio hybrid refrigeration process

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川芎嗪对实验性手术胎儿生长受限大鼠胎儿发育的影响及机制

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西北药学杂志 2024年第4期39卷 81-85页

作者：信艳萍王雅莉李瓅崔雪梅郑州市中心医院妇产科郑州450000

目的探讨川芎嗪对实验性手术胎儿生长受限(fetal growth restriction,FGR)大鼠胎儿发育及大鼠胎盘组织中可溶性血管内皮生长因子受体-1(soluble fms-like tyrosine kinase-1,sFlt-1)和胎盘生长因子(placenta growth factor,PLGF)表达水平的影响。方法将24只孕鼠随机分为正常组、模型组、川芎嗪组(80 mg·kg^(−1)),每组8只。除正常组外,其余2组于妊娠第5天开始用烟熏法建立FGR大鼠模型。妊娠第21天实施剖腹产,进行胎儿结局评估、检查胎儿生长发育情况并检测大鼠胎盘组织中sFlt-1、PLGF mRNA及蛋白的表达情况。结果与正常组比较,模型组大鼠胚胎吸收率、大鼠胎盘组织中sFlt-1 mRNA及蛋白的表达水平、活胎内脏畸形率和变异率、骨骼畸形率与变异率均显著升高(P<0.05),大鼠胎盘组织中PLGF mRNA及蛋白的表达水平、成活胎儿数量、活胎体质量及掌骨、跖骨、尾椎骨骨化率均显著降低(P<0.05);与模型组比较,川芎嗪组大鼠胚胎吸收率、大鼠胎盘组织中sFlt-1 mRNA及蛋白表达水平、活胎内脏畸形率和变异率、骨骼畸形率与变异率均显著降低(P<0.05),大鼠胎盘组织中PLGF mRNA及蛋白的表达水平、成活胎儿数量、活胎体质量及掌骨、跖骨、尾椎骨骨化率显著升高(P<0.05)。结论川芎嗪可以显著下调FGR孕鼠sFlt-1的表达水平,上调PLGF的表达水平,促进胎儿生长发育,改善胎儿生长受限。

关键词：川芎嗪实验性手术胎儿生长受限胎儿发育可溶性血管内皮生长因子受体-1 胎盘生长因子

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5-Demethylnobiletin and its major metabolites:efficient preparation and mechanism of their anti-proliferation activity in HepG2 cells

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Food Science and Human Wellness 2022年第5期11卷 1191-1200页

作者： yanping xin Ting Zheng Man Zhang Ruiqiang Zhang Siyue Zhu Dongli Li Denggao Zhao Yanyan Ma Chi-Tang Ho Qingrong Huang School of Biotechnology and Health Sciences Wuyi UniversityJiangmen 529020China International Healthcare Innovation Institute(Jiangmen) Jiangmen 529020China Department of Food Science Rutgers UniversityNew Jersey 08901USA

5-Demethylnobile tin(5-DMN),a hydroxylated polymethoxyflavone(OH-PMF)identified in aged citrus peels,has demonstrated health benefiting effects in previous studies.5-DMN undergoes biotransformation in vivo,yielding 5,3’-didemethylnobiletin(5,3’-DDMN),5,4’-didemethylnobiletin(5,4’-DDMN)and5,3’,4’-tridemethylnobiletin(5,3’,4’-TDMN).However,the anti-cancer effects of 5-DMN and its in vivo metabolites against HepG2 cells remain *** this study,an efficient chemical synthetic method was developed to obtain 5-DMN and its 3 metabolites,and their molecular structures were confirmed by;H NMR and ***,cell cycle arrestment,apoptosis and caspase-3 expression were investigated to evaluate the anti-liver cancer effects of these OH-PMFs on HepG2 *** results showed that all 4 compounds inhibited the proliferation of HepG2 cells in a concentration-dependent *** anti-proliferative activity was exerted through inducing G2/M phase arrestment,cell apoptosis and promoting expression of a key apoptotic protein called cleaved *** results indicated that 5,3’-DDMN and5,3’,4’-TDMN showed a stronger inhibitory activity on cell proliferation than 5-DMN,followed by 5,4’-*** expression of cleaved caspase-3 was the highest in cells treated with 5,4’-DDMN,implying that the apoptosis induced by other OH-PMFs might be mediated by other apoptotic execution *** research reveals the application potential and scientific evidence for the production and functionality of OH-PMFs.

关键词： Hydroxylated polymethoxyflavones Chemical synthesis HepG2 Cell cycle Apoptosis

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Enhancing Photovoltaic Performance of Nonfused-Ring Electron Acceptors via Asymmetric End-Group Engineering and Noncovalently Conformational Locks

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Chinese Journal of Chemistry 2024年第5期42卷 485-490页

作者： Bo Liu Congqi Li Xiaobin Gu Yinghui Han Zhixiang Wei Yunhao Cai xin Zhang Hui Huang yanping Huo School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhouGuangdong510006 China College of Materials Science and Opto-Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physics University of Chinese Academy of SciencesBeijing100049 China College Resources and Environment University of Chinese Academy of SciencesBeijing100049 China Center for Excellence in Nanoscience (CAS) & Key Laboratory of Nanosystem and Hierarchical Fabrication (CAS) National Center for Nanoscience and TechnologyBeijing100190 China

By employing the asymmetric end-group engineering,an asymmetric nonfused-ring electron acceptor(NFREA)was designed and *** with the symmetric analogs(NoCA-17 and NoCA-18),NoCA-19 possesses broader light absorption range,more coplanarπ-conjugated backbone,and appropriate crystallinity according to the experimental and theoretical *** organic solar cells based on J52:NoCA-19 exhibited a power conversion efficiency as high as 12.26%,which is much higher than those of J52:NoCA-17(9.50%)and J52:NoCA-18(11.77%),mainly due to more efficient exciton dissociation,better and balanced charge mobility,suppressed recombination loss,shorter charge extraction time,longer charge carrier lifetimes,and more favorable blend film *** findings demonstrate the great potential of asymmetric end-group engineering in exploring low-cost and high-performance NFREAs.

关键词： Organic solar cells Nonfused-ring electron acceptors Asymmetric end-group engineering Noncovalently conformational locks Low-cost acceptors

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Alternative Splicing of OsCYL4 Controls Drought Resistance via Regulating Water Loss and Reactive Oxygen Species-Scavenging in Rice

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Rice science 2024年第1期31卷 1-5,I0001-I0008页

作者： SHA Gan SHEN xin WU Zini XU Xiaocan XU xin TAN yanping LIU xinqiong TANG Xianyin WANG Chuntai QIN Yonghua Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area College of Life SciencesSouth Central Minzu UniversityWuhan 430074China Huazhong Agricultural University Wuhan 430070China

A rice cyclase gene,OsCYL4b,identified as an alternative splice variant of the cyclase gene OsCYL4a,is involved in the regulation of drought stress and oxidative *** with OsCYL4a,OsCYL4b lacks the second exon,which is located in the conserved motif 3,and may be a functionally important *** results suggested that OsCYL4b was responsive to multiple abiotic stresses,and was localized to both the cytoplasm and plasma *** overexpression of OsCYL4b resulted in significantly enhanced drought and osmotic stress tolerance,reduced water loss,and increased abscisic acid(ABA)content compared with the wild type(WT).

关键词： drought Oxygen stress

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视频提示法对孤独症学生价格比较技能的干预研究

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中国特殊教育 2022年第4期 80-88页

作者：柳笛张铎毛祎雯 yanping xin 华东师范大学教师教育学院上海200062 华东师范大学教育学部上海200062 普渡大学教育研究系美国47907

价格比较作为一项实用数学技能,能提升孤独症学生的社会适应能力与独立生活能力。研究采用单一被试实验中的跨被试多探测实验设计,选取三名8—10岁的孤独症学生,探索视频提示法对孤独症学生价格比较技能的干预效果。研究结果表明,干预... 详细信息

价格比较作为一项实用数学技能,能提升孤独症学生的社会适应能力与独立生活能力。研究采用单一被试实验中的跨被试多探测实验设计,选取三名8—10岁的孤独症学生,探索视频提示法对孤独症学生价格比较技能的干预效果。研究结果表明,干预后三名被试价格比较任务的正确率有明显提高,且干预维持效果良好,在社区超市里泛化效果良好。基于以上发现,本研究提出对未来教学实践的建议。

关键词：孤独症视频提示价格比较

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基于图式教学法对孤独症学生数学问题解决的干预研究

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中国特殊教育 2023年第1期 61-68页

作者：柳笛毛祎雯阳子奕 xin yanping 华东师范大学教师教育学院上海200062 华东师范大学特殊教育学系上海200062 普渡大学教师教育学院美国47907

数学问题解决是指学生初步运用已掌握的数学知识与数学活动经验解决简单的实际问题,有利于发展孤独症学生的应用意识。本研究采用单一被试实验设计中的跨被试多探测实验设计,探讨基于图式教学法对3名孤独症学生数学问题解决能力的干预... 详细信息

数学问题解决是指学生初步运用已掌握的数学知识与数学活动经验解决简单的实际问题,有利于发展孤独症学生的应用意识。本研究采用单一被试实验设计中的跨被试多探测实验设计,探讨基于图式教学法对3名孤独症学生数学问题解决能力的干预效果。研究结果表明,干预后3名被试数学问题解决的正确步骤数大幅提高,说明干预效果强,且维持效果良好。本研究对教学实践与未来研究具有重要启示意义。

关键词：孤独症基于图式教学法数学问题解决

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New insights in nano-copper chromite catalyzing ultrafi ne AP: Evaluation of dispersity and mixing uniformity

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Defence technology 2024年第2期

作者： Yong Kou Peng Luo Lei Xiao yanping xin Guangpu Zhang Yubing Hu Junqing Yang Hongxu Gao Fengqi Zhao Wei Jiang Gazi Hao

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