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Correlation between pre-anesthesia anxiety and emergence agitation in non-small cell lung cancer surgery patients
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作者 Fen Yan Li-Hua Yuan +1 位作者 xiao he Kai-Feng Yu 《World Journal of Psychiatry》 SCIE 2024年第6期930-937,共8页
BACKGROUND Preoperative anxiety is a common emotional problem during the perioperative period and may adversely affect postoperative recovery.Emergence agitation(EA)is a common complication of general anesthesia that ... BACKGROUND Preoperative anxiety is a common emotional problem during the perioperative period and may adversely affect postoperative recovery.Emergence agitation(EA)is a common complication of general anesthesia that may increase patient discomfort and hospital stay and may be associated with the development of postoperative complications.Pre-anesthetic anxiety may be associated with the development of EA,but studies in this area are lacking.AIM To determine the relationship between pre-anesthetic anxiety and EA after radical surgery in patients with non-small cell lung cancer(NSCLC).METHODS Eighty patients with NSCLC undergoing surgical treatment between June 2020 and June 2023 were conveniently sampled.We used the Hospital Anxiety and Depression Scale’s(HADS)anxiety subscale(HADS-A)to determine patients’anxiety at four time points(T1-T4):Patients’preoperative visit,waiting period in the surgical waiting room,after entering the operating room,and before anesthesia induction,respectively.The Riker Sedation-Agitation Scale(RSAS)examined EA after surgery.Scatter plots of HADS-A and RSAS scores assessed the correlation between patients’pre-anesthesia anxiety status and EA.We performed a partial correlation analysis of HADS-A scores with RSAS scores.RESULTS NSCLC patients’HADS-A scores gradually increased at the four time points:7.33±2.03 at T1,7.99±2.22 at T2,8.05±2.81 at T3,and 8.36±4.17 at T4.The patients’postoperative RSAS score was 4.49±1.18,and 27 patients scored≥5,indicating that 33.75%patients had EA.HADS-A scores at T3 and T4 were significantly higher in patients with EA(9.67±3.02 vs 7.23±2.31,12.56±4.10 vs 6.23±2.05,P<0.001).Scatter plots showed the highest correlation between HADS-A and RSAS scores at T3 and T4.Partial correlation analysis showed a strong positive correlation between HADS-A and RSAS scores at T3 and T4(r=0.296,0.314,P<0.01).CONCLUSION Agitation during anesthesia recovery in patients undergoing radical resection for NSCLC correlated with anxiety at the time of entering the operating room and before anesthesia induction. 展开更多
关键词 Non-small cell lung cancer Operative treatment Anesthesiology department Pre-anesthetic anxiety Emergence agitation Correlation study
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Prediction of the viscosity of natural gas at high temperature and high pressure using free-volume theory and entropy scaling 被引量:1
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作者 Wei Xiong Lie-Hui Zhang +5 位作者 Yu-Long Zhao Qiu-Yun Hu Ye Tian xiao he Rui-Han Zhang Tao Zhang 《Petroleum Science》 SCIE EI CSCD 2023年第5期3210-3222,共13页
Eighteen models based on two equations of state(EoS),three viscosity models,and four mixing rules were constructed to predict the viscosities of natural gases at high temperature and high pressure(HTHP)conditions.For ... Eighteen models based on two equations of state(EoS),three viscosity models,and four mixing rules were constructed to predict the viscosities of natural gases at high temperature and high pressure(HTHP)conditions.For pure substances,the parameters of free volume(FV)and entropy scaling(ES)models were found to scale with molecular weight,which indicates that the ordered behavior of parameters of Peng-Robinson(PR)and Perturbed-Chain Statistical Associating Fluid Theory(PC-SAFT)propagates to the behavior of parameters of viscosity model.Predicting the viscosities of natural gases showed that the FV and ES models respectively combined with MIX4 and MIX2 mixing rules produced the best accuracy.Moreover,the FV models were more accurate for predicting the viscosities of natural gases than ES models at HTHP conditions,while the ES models were superior to PRFT models.The average absolute relative deviations of the best accurate three models,i.e.,PC-SAFT-FV-MIX4,tPR-FVMIX4,and PC-SAFT-ES-MIX2,were 5.66%,6.27%,and 6.50%,respectively,which was available for industrial production.Compared with the existing industrial models(corresponding states theory and LBC),the proposed three models were more accurate for modeling the viscosity of natural gas,including gas condensate. 展开更多
关键词 VISCOSITY Friction theory Free volume theory Entropy scaling PC-SAFT Equation of state
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低碳视角下成渝地区双城经济圈现代物流业与现代农业协同可持续发展评价研究
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作者 黄远新 肖合 +1 位作者 马莉 申慢慢 《四川职业技术学院学报》 2024年第5期74-81,共8页
“十四五”现代物流发展规划提出“现代物流一头连着生产,一头连着消费”,现代农业既是生产,也是消费,关乎民生民计,高效优质的农产品到达消费者终端离不开现代物流业的支撑,其重要性不言而喻。根据我国到2030年碳排放量达到峰值这一目... “十四五”现代物流发展规划提出“现代物流一头连着生产,一头连着消费”,现代农业既是生产,也是消费,关乎民生民计,高效优质的农产品到达消费者终端离不开现代物流业的支撑,其重要性不言而喻。根据我国到2030年碳排放量达到峰值这一目标,现代物流业与现代农业深度融合协同可持续发展的同时,更要实现全流程、全要素、全方位低碳目标。本文从低碳视角出发,借助协同理论构建动态测度模型,对成渝地区双城经济圈现代物流业与现代农业深度融合协同可持续发展进行评价。成渝地区2011-2021的区域数据研究结果表明:低碳视角下成渝地区双城经济圈现代物流业与现代农业深度融合协同发展态势整体呈上升趋势,但对比系统标准协同度存在阶段性偏差。就此分析,本文从宏观政策、信息平台、低碳技术三方面的协同发展提出了相应的对策建议。 展开更多
关键词 低碳 现代物流业 现代农业 协同发展
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Response analyses on the drill-string channel for logging while drilling telemetry
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作者 Ao-Song Zhao xiao he +1 位作者 Hao Chen Xiu-Ming Wang 《Petroleum Science》 SCIE EI CSCD 2023年第5期2796-2808,共13页
Downhole acoustic telemetry(DAT),using a long drill string with periodical structures as the channel,is a prospective technology for improving the transmission rate of logging while drilling(LWD)data.Previous studies ... Downhole acoustic telemetry(DAT),using a long drill string with periodical structures as the channel,is a prospective technology for improving the transmission rate of logging while drilling(LWD)data.Previous studies only focused on the acoustic property of a free drill string and neglected the coupling between pipes and fluid-filled boreholes.In addition to the drill-string waves,a series of fluid waves are recorded in the DAT channel,which has not been investigated yet.Unpredictable channel characteristics result in lower transmission rates and stability than expected.Therefore,a more realistic channel model is needed considering the fluid-filled borehole.In this paper,we propose a hybrid modeling method to investigate the response characteristics of the DAT channel.By combining the axial wavenumbers and excitation functions of mode waves in radially layered LWD structures,the channel model is approximated to the 1-D propagation,which considers transmission,reflection,and interconversion of the drillstring and fluid waves.The proposed 1-D approximation has been well validated by comparing the 2-D finite-difference modeling.It is revealed that the transmitted and converted fluid waves interfere with the drill-string wave,which characterizes the DAT channel as a particular coherent multi-path channel.When a fluid-filled borehole surrounds the drill string,the channel responses exhibit considerable delay as well as strong frequency selectivity in amplitude and phase.These new findings suggest that the complexity of the channel response has been underestimated in the past,and therefore channel measurements on the ground are unreliable.To address these channel characteristics,we apply a noncoherent demodulation strategy.The transmission rate for synthetic data reaches 15 bps in a 94.5 m long channel,indicating that the acoustic telemetry is promising to break the low-speed limitation of mud-pulse telemetry. 展开更多
关键词 Logging while drilling Borehole geophysics Downhole acoustic telemetry Channel modeling Frequency selectivity
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通隧补肾解语汤治疗缺血性脑卒中后失语症疗效分析与探讨
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作者 张烁 肖贺 郭延林 《系统医学》 2024年第13期19-22,共4页
目的探讨缺血性脑卒中后失语症实施通隧补肾解语汤进行治疗的效果。方法回顾性选取2021年1月—2022年10月泰安市中医医院接收的90例缺血性脑卒中后失语症患者的临床资料,按不同治疗方法分为对照组和观察组,各45例。对照组给予常规治疗,... 目的探讨缺血性脑卒中后失语症实施通隧补肾解语汤进行治疗的效果。方法回顾性选取2021年1月—2022年10月泰安市中医医院接收的90例缺血性脑卒中后失语症患者的临床资料,按不同治疗方法分为对照组和观察组,各45例。对照组给予常规治疗,观察组加用通隧补肾解语汤治疗,对比两组治疗效果。结果研究组治疗总有效率(97.78%)高于对照组(82.22%),差异有统计学意义(χ^(2)=4.444,P<0.05)。治疗后,观察组口语表达、听语理解、阅读以及书写方面均优于对照组,差异有统计学意义(P均<0.05)。治疗后,观察组脑血流变化优于对照组,差异有统计学意义(P均<0.05)。结论常规治疗加用通隧补肾解语汤治疗缺血性脑卒中后失语症的效果较为显著,同时可以改善患者的言语能力以及脑血流变化情况。 展开更多
关键词 通隧补肾解语汤 缺血性脑卒中后失语症 语言功能 脑血流
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辣椒素生物活性及其递送系统研究进展 被引量:4
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作者 王馨瑶 陈梦娟 +3 位作者 肖何 刘洋 王蓉蓉 蒋立文 《食品科学》 EI CAS CSCD 北大核心 2024年第3期326-334,共9页
随着“健康中国”战略的逐步推进,以“药食同源”为代表的大健康产业逐渐成为关注热点。辣椒作为我国消费量最大的调味品之一,可用于药食同源食品的研发。其中,辣椒素作为辣椒中的主要生物活性物质,具有镇痛、抗氧化、抗炎、抗癌、抗肥... 随着“健康中国”战略的逐步推进,以“药食同源”为代表的大健康产业逐渐成为关注热点。辣椒作为我国消费量最大的调味品之一,可用于药食同源食品的研发。其中,辣椒素作为辣椒中的主要生物活性物质,具有镇痛、抗氧化、抗炎、抗癌、抗肥胖、心脏保护等生物学作用,其药理及潜在作用机制已得到广泛研究。然而,考虑到辣椒素在实际应用中存在刺激性强、水溶性差和生物利用度低等问题,基于稳定性、包封率和生物学特性评价了提高辣椒素口服生物利用度的新型递送系统,包括脂质体、胶束、微/纳米乳液、Pickering乳液和纳米粒子。本综述旨在为辣椒素进一步开发成具有保健功能的营养产品提供一定的理论依据。 展开更多
关键词 辣椒素 生物活性 代谢 递送系统
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大型陶瓷坛发酵剁辣椒风味及微生物的空间差异性分析
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作者 肖何 尹含靓 +3 位作者 王馨瑶 刘洋 王蓉蓉 蒋立文 《中国食品学报》 EI CAS CSCD 北大核心 2024年第1期278-290,共13页
以大型陶瓷坛发酵的剁辣椒为研究对象,采用高效液相色谱法测定其有机酸,并借助顶空固相微萃取-气质联用技术和高通量测序技术研究剁辣椒在陶瓷坛上、中、下3个空间层次挥发性物质和微生物的差异性。结果表明:各空间层次的有机酸、挥发... 以大型陶瓷坛发酵的剁辣椒为研究对象,采用高效液相色谱法测定其有机酸,并借助顶空固相微萃取-气质联用技术和高通量测序技术研究剁辣椒在陶瓷坛上、中、下3个空间层次挥发性物质和微生物的差异性。结果表明:各空间层次的有机酸、挥发性物质含量和微生物组成均差异显著(P<0.05)。其中,总挥发性物质含量依次为上层>下层>中层,克雷伯菌属(Klebsiella)、肠杆菌属(Enterobacter)、四联球菌属(Tetragenococcus)、葡萄球菌属(Staphylococcus)等是样品中的优势发酵菌属。相关性分析表明样品中多种菌属对有机酸和风味化合物的形成均有积极的影响。本研究揭示了剁辣椒在不同发酵空间层次上的差异,为提升工业化生产剁辣椒品质提供一定的理论依据。 展开更多
关键词 剁辣椒 有机酸 挥发性物质 微生物 空间差异性
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化学工程基础实验课程教学改革中的探索与实践
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作者 郝朋飞 付云龙 +3 位作者 杨俊娟 刘进剑 肖何 胡天军 《中原工学院学报》 CAS 2024年第4期39-42,52,共5页
针对传统的化学工程基础实验教学模式中存在的一些问题和不足,将多元化教学模式引入到化学工程基础实验课程的教学过程中,对实验预习模式、实验教学内容、实验数据处理和考核评价方式进行了调整和完善。通过课程教学改革,化学工程基础... 针对传统的化学工程基础实验教学模式中存在的一些问题和不足,将多元化教学模式引入到化学工程基础实验课程的教学过程中,对实验预习模式、实验教学内容、实验数据处理和考核评价方式进行了调整和完善。通过课程教学改革,化学工程基础实验课程的教学质量得到了明显提高,学生的动手实践能力、团队协作能力和创新思维能力得到了显著提升,为培养教学和科研能力较强的复合型人才奠定了良好的基础。 展开更多
关键词 化学工程基础实验 多元化教学模式 教学改革 探索与实践
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构建“经济安全国家”:相互依赖时代的美国竞争战略
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作者 曹文娟 肖河 《当代美国评论》 CSSCI 2024年第3期66-85,131,132,共22页
在大国竞争重新成为美国对外政策的主轴后,如何在新的、相互依赖的国际体系中展开竞争、趋利避害就成为美国政策界的核心关切。相关研究在视角和原则上均延续了冷战时期的类似讨论,关注国家应对外部安全压力和维护核心价值之间的关系,... 在大国竞争重新成为美国对外政策的主轴后,如何在新的、相互依赖的国际体系中展开竞争、趋利避害就成为美国政策界的核心关切。相关研究在视角和原则上均延续了冷战时期的类似讨论,关注国家应对外部安全压力和维护核心价值之间的关系,主张在长期的大国竞争中制定追求适度安全、平衡安全和发展需要的竞争政策,并据此构建与政策相匹配的国内体制。在当今美国,上述研究正围绕什么是经济安全,美国面临着何种经济安全形势,应该构建什么样的“经济安全国家”等议题展开。基于不同的对华认识,美国在经济安全问题上存在两种大相径庭的认识。一者主张只有“全面脱钩”才能确保经济安全,另一者主张美国能够依靠“去风险”来兼顾安全和发展需要。拜登政府也是这场争论的参与者,其对经济安全的认知也随着俄乌冲突的爆发和中美力量对比的消长而变化。相对于特朗普政府,拜登政府收窄了经济安全的定义,没有将中美经济关系全面“安全化”,也没有大刀阔斧地重构国内的经济安全机构,而是选择了一条更为温和平衡的战略路径。透过考察美国如何设计和构建“经济安全国家”,可以更加精准地理解美国的对华竞争战略,也有助于中国更好地统筹发展与安全的关系,妥善应对这一竞争。 展开更多
关键词 大国竞争 美国对华政策 经济安全 经济竞争 相互依赖
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基于色相角算法的珠江口赤潮遥感识别
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作者 许源兴 孙琰 +2 位作者 肖鹤 艾彬 刘大召 《中山大学学报(自然科学版)(中英文)》 CAS CSCD 北大核心 2024年第1期96-104,共9页
为实现珠江口高分辨率赤潮遥感识别,科学支撑赤潮灾害防灾减灾工作,利用海洋一号C/D卫星搭载的海岸带成像仪高空间分辨率数据,在分析珠江口近岸浑浊水体、干净水体和赤潮水体遥感影像光谱特征基础上,通过计算水体色相角并结合目视解译... 为实现珠江口高分辨率赤潮遥感识别,科学支撑赤潮灾害防灾减灾工作,利用海洋一号C/D卫星搭载的海岸带成像仪高空间分辨率数据,在分析珠江口近岸浑浊水体、干净水体和赤潮水体遥感影像光谱特征基础上,通过计算水体色相角并结合目视解译识别珠江口赤潮。利用该方法成功识别2020年10月26日—11月6日在珠江口海域发生的双胞旋沟藻赤潮。利用色相角能够很好地识别出珠江口海域的赤潮;赤潮水体的色相角在58°~61°变化;该方法对形成初期的小范围赤潮、低密度赤潮和条带状赤潮具有很好的识别效果。 展开更多
关键词 珠江口 赤潮 HY-1C/D 色相角
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尼拉帕利通过DDX21增强胶质母细胞瘤放射敏感性
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作者 罗佳 肖何 +1 位作者 彭杨 耿明英 《江苏大学学报(医学版)》 CAS 2024年第5期395-406,共12页
目的:探究多聚腺苷二磷酸核糖聚合酶[poly(ADP-ribose)polymerase,PARP]抑制剂尼拉帕利作为胶质母细胞瘤(glioblastoma,GBM)放疗增敏剂的可行性及作用机制。方法:生物信息学分析PARP抑制剂奥拉帕利和他拉唑帕利在胶质瘤中的作用机制及... 目的:探究多聚腺苷二磷酸核糖聚合酶[poly(ADP-ribose)polymerase,PARP]抑制剂尼拉帕利作为胶质母细胞瘤(glioblastoma,GBM)放疗增敏剂的可行性及作用机制。方法:生物信息学分析PARP抑制剂奥拉帕利和他拉唑帕利在胶质瘤中的作用机制及其与放疗的相关性;CCK-8测定尼拉帕利在GBM细胞(A172、U251和U87)中的最适作用浓度和最适作用时间;克隆形成实验检测尼拉帕利对GBM细胞放疗敏感性的影响;流式细胞术检测尼拉帕利联合放疗对GBM细胞周期的影响,蛋白质印迹检测尼拉帕利联合放疗对DExD-box解旋酶(DExD-box helicase,DDX21)蛋白表达的影响,免疫荧光法研究尼拉帕利联合放疗对DDX21在GBM中细胞核定位的影响,以探讨尼拉帕利在GBM中放疗增敏的作用机制。结果:生物信息学分析表明,在519个肿瘤细胞系中,PARP抑制剂在胶质瘤中发挥作用的途径主要与核糖体生物合成和功能相关;在44个实体肿瘤细胞系中,同源重组修复能力与核糖体生物合成能力高度正相关。尼拉帕利在A172和U87细胞系中的IC50值分别为(10.77±3.31)μmol/L和(32.37±2.84)μmol/L;在尼拉帕利浓度为348 nmol/L和1044 nmol/L时A172细胞的辐射剂量增强因子(DEF37)分别为1.99和2.17,在1056 nmol/L和3169 nmol/L时U87细胞的DEF37分别为1.10和1.44,尼拉帕利对p53野生型的A172细胞和U87细胞具有放疗增敏作用,但对p53突变型的U251细胞无放疗增敏作用;在A172细胞和U87细胞中尼拉帕利联合放疗组的G2/M期细胞均明显多于对照组,尼拉帕利联合放疗可以使A172和U87细胞阻滞在对射线敏感的G2/M期,从而实现放疗增敏。最后,尼拉帕利联合放疗处理U87细胞后,DDX21蛋白表达无显著变化(P>0.05),免疫荧光结果提示尼拉帕利联合放疗处理U87细胞后,DDX21从核仁到核质重新定位;敲低DDX21会引起U87细胞产生放疗抵抗,尼拉帕利对DDX21敲低后的U87细胞仍有放疗增敏作用。结论:尼拉帕利通过使DDX21从核仁到核质重新定位,影响核糖体生物合成,产生G2/M期细胞周期阻滞,从而增加U87细胞的放疗敏感性。 展开更多
关键词 胶质母细胞瘤 尼拉帕利 DDX21 放疗敏感性 核糖体生物合成
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水激光法与微创伢典法治疗对乳牙龋齿患儿临床疗效及金属蛋白酶、乳酸脱氢酶的影响
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作者 肖鹤 陈妍 郭晓慧 《黑龙江医学》 2024年第13期1573-1575,共3页
目的:比较水激光法与微创伢典法治疗对乳牙龋齿患儿临床疗效及金属蛋白酶、乳酸脱氢酶的影响。方法:选取2019年3月—2022年5月河南神火集团总医院治疗的90例患儿作为研究对象,按照随机数表法分为水激光组、微创伢典组及传统去腐组,每组... 目的:比较水激光法与微创伢典法治疗对乳牙龋齿患儿临床疗效及金属蛋白酶、乳酸脱氢酶的影响。方法:选取2019年3月—2022年5月河南神火集团总医院治疗的90例患儿作为研究对象,按照随机数表法分为水激光组、微创伢典组及传统去腐组,每组各30例。分别采用水激光法、微创伢典法治疗及传统去腐方法治疗患儿乳牙龋齿。比较3组患者疼痛情况、操作时间、临床疗效、金属蛋白酶及乳酸脱氢酶水平。结果:水激光组、微创伢典组及传统去腐组患儿术中疼痛例数比较,差异有统计学意义(χ^(2)=20.170,P<0.001);水激光组、微创伢典组及传统去腐组患儿去龋时间比较,差异有统计学意义(t=15.885,P<0.001);水激光组、微创伢典组及传统去腐组患儿临床疗效比较,差异有统计学意义(χ^(2)=7.910,P=0.019);水激光组、微创伢典组及传统去腐组患儿金属蛋白酶-2、乳酸脱氢酶、金属蛋白酶-9水平比较,差异有统计学意义(χ^(2)=5.467、12.486、3.262,P<0.05)。结论:水激光法与微创伢典法治疗患儿乳牙龋齿均有良好的疗效,但水激光法具有较少的疼痛感及操作时间短等优点,可以减少患儿的不适感及疼痛感,更有利于被患儿接受。 展开更多
关键词 水激光法 微创伢典法 乳牙龋齿 临床疗效 金属蛋白酶 乳酸脱氢酶
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Consensus Control of Multi-Agent Systems Using Fault-Estimation-in-the-Loop:Dynamic Event-Triggered Case 被引量:21
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作者 Yamei Ju Derui Ding +2 位作者 xiao he Qing-Long Han Guoliang Wei 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2022年第8期1440-1451,共12页
The paper develops a novel framework of consensus control with fault-estimation-in-the-loop for multi-agent systems(MASs)in the presence of faults.A dynamic event-triggered protocol(DETP)by adding an auxiliary variabl... The paper develops a novel framework of consensus control with fault-estimation-in-the-loop for multi-agent systems(MASs)in the presence of faults.A dynamic event-triggered protocol(DETP)by adding an auxiliary variable is utilized to improve the utilization of communication resources.First,a novel estimator with a noise bias is put forward to estimate the existed fault and then a consensus controller with fault compensation(FC)is adopted to realize the demand of reliability and safety of addressed MASs.Subsequently,a novel consensus control framework with fault-estimation-in-the-loop is developed to achieve the predetermined consensus performance with the l_(2)-l_(∞)constraint by employing the variance analysis and the Lyapunov stability approaches.Furthermore,the desired estimator and controller gains are obtained in light of the solution to an algebraic matrix equation and a linear matrix inequality in a recursive way,respectively.Finally,a simulation result is employed to verify the usefulness of the proposed design framework. 展开更多
关键词 Consensus control dynamic event-triggered protocol(DETP) fault compensation(FC) fault estimation multi-agent systems(MASs)
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不同软硬段含量PBT-b-PTMG嵌段共聚物的合成与性能 被引量:1
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作者 王杰 邢喜全 +1 位作者 何肖 王秀华 《高分子材料科学与工程》 EI CAS CSCD 北大核心 2023年第9期27-34,共8页
采用直接酯化熔融缩聚法合成一系列不同软硬段含量的聚对苯二甲酸丁二醇酯(PBT)-b-聚四氢呋喃(PTMG)聚醚酯嵌段共聚物(TPEE),以红外光谱、核磁共振、X射线衍射、差示扫描量热分析和动态力学热分析等方法,探讨不同软硬段质量比及不同软... 采用直接酯化熔融缩聚法合成一系列不同软硬段含量的聚对苯二甲酸丁二醇酯(PBT)-b-聚四氢呋喃(PTMG)聚醚酯嵌段共聚物(TPEE),以红外光谱、核磁共振、X射线衍射、差示扫描量热分析和动态力学热分析等方法,探讨不同软硬段质量比及不同软段相对分子质量对材料结构及相对分子质量、热性能和黏弹性等的影响。结果表明,在相同出料功率下制得的TPEE的特性黏度均高于PBT,并随硬段质量分数或软段相对分子质量的增大而减小;TPEE的熔点下降幅度随软段摩尔分数的增加而增大;TPEE中存在微相分离结构,当硬段质量分数为60%、软段PTMG数均分子量为2×103时,同时出现了分别代表硬段PBT以及软段中PTMG的玻璃化转变的损耗角正切峰。研究结果为TPEE的合成和应用提供了一定借鉴。 展开更多
关键词 直接酯化 软硬段含量 嵌段共聚物 黏弹性 微相分离 玻璃化转变
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CFD Simulation of the Filtration Performance of Fibrous Filter Considering Fiber Electric Potential Field 被引量:2
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作者 Lei Hou Ayang Zhou +3 位作者 xiao he Wei Li Yan Fu Jinli Zhang 《Transactions of Tianjin University》 EI CAS 2019年第5期437-450,共14页
Aiming at disclosing the quantitative e ects of Coulomb forces on the ltration e ciency of aerosol particles, a three- dimensional random ber model was established to describe the microstructure of brous lters. Then, ... Aiming at disclosing the quantitative e ects of Coulomb forces on the ltration e ciency of aerosol particles, a three- dimensional random ber model was established to describe the microstructure of brous lters. Then, computational mod- els including the ow model, particle model, and electric eld model were constructed to estimate the ltration e ciency using the Fluent custom user-de ned function program, neglecting the non-uniformity of the ber potential and the particle charge distribution. The simulation results using the established models agreed with the data in the literature. In particular, the electric eld force was found to be one of the important factors required to improve the ltration e ciency estimation accuracy for the ultra ne particles. Moreover, the variation tendencies of the ltration e ciency and the pressure drop of brous lters were studied based on the in uence factors of the ber potential, particle charge-to-mass ratio, solid volume fraction, ber diameter, and face velocity. The established models and estimated results will provide important guidance on the design of high-e ciency particulate air lters for aerosol particles. 展开更多
关键词 FILTRATION efficiency COULOMB force Three-dimensional random FIBER model INTERCEPTION CAPTURE BROWNIAN diffusion
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Countermeasures of heavy metal pollution 被引量:2
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作者 ZHAI Shengjia xiao he +1 位作者 SHU Yan ZHAO Zhijie 《Chinese Journal Of Geochemistry》 EI CAS CSCD 2013年第4期446-450,共5页
This article gives a review on heavy metal pollution prevention and control,and it also discusses heavy metal pollutant discharge,prediction and evaluation of environmental impact,and pollution prevention and monitoring.
关键词 重金属污染 环境影响评价 污染防治 污染物排放 ing 监测
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Annihilating the Formation of Silicon Carbide:Molten Salt Electrolysis of Carbon-Silica Composite to Prepare the Carbon-Silicon Hybrid for Lithium-lon Battery Anode 被引量:2
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作者 Xianbo Zhou Hongwei Xie +4 位作者 xiao he Zhuqing Zhao Qiang Ma Muya Cai Huayi Yin 《Energy & Environmental Materials》 2020年第2期166-176,共11页
Silicon(Si)and carbon(C)composites hold the promise for replacing the commercial graphite anode,thus increasing the energy density of lithium-ion batteries(LIBs).To mitigate the formation of SiC,this paper reports a m... Silicon(Si)and carbon(C)composites hold the promise for replacing the commercial graphite anode,thus increasing the energy density of lithium-ion batteries(LIBs).To mitigate the formation of SiC,this paper reports a molten salt electrolysis approach to prepare C-Si composite by the electrolysis of C-SiO2 composites.Unlike the conventional way of making a C coating on Si,C-SiO2 composites were prepared by pyrolyzing the low-cost sucrose and silica.The electrochemical deoxidation of the C-SiO2 composites not only produces nanostructured Si inside the C matrix but also introduces voids between the C and Si owing to the volume shrinkage from converting SiO2 to Si.More importantly,the use of Mg ion-containing molten salts precludes the generation of SiC,and the electrolytic Si@C composite anode delivers a capacity of about 1500 mAh g-1 after 100 cycles at a current density of 500 mA g-1.Further,the Si@C‖LiNi0.6Co0.2Mn0.2O2 full cell delivers a high energy density of 608 Wh kg-1.Overall,the molten salt approach provides a one-step electrochemical way to convert oxides@C to metals@C functional materials. 展开更多
关键词 anode material carbon lithium-ion batteries molten salt electrolysis silicon
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The Global Impac of the Belt and Road Initiative 被引量:1
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作者 xiao he 《China Today》 2017年第3期34-37,共4页
TO accurately evaluate the global impact of the Belt and Road Initiative,we should first understand what it is and how it affects the rest of the world,without speculating about whether China has ulterior motives behi... TO accurately evaluate the global impact of the Belt and Road Initiative,we should first understand what it is and how it affects the rest of the world,without speculating about whether China has ulterior motives behind the project.Over the past three years,the initial ideas behind the Belt and Road Initiative have gradually 展开更多
关键词 英语 阅读 理解 时事
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Three-dimensional thermal illusion devices with arbitrary shape
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作者 Xingwei Zhang xiao he Linzhi Wu 《Chinese Physics B》 SCIE EI CAS CSCD 2019年第6期254-261,共8页
Since the concept of invisible cloak was proposed by Pendry and Leonhardt in 2006, many researchers have applied the theory of coordinate transformation to thermodynamics and overcome the complexity of inhomogeneous a... Since the concept of invisible cloak was proposed by Pendry and Leonhardt in 2006, many researchers have applied the theory of coordinate transformation to thermodynamics and overcome the complexity of inhomogeneous and anisotropic of material parameters. However, only two-dimensional(2 D) thermal illusion devices are researched recently. According to this situation, our study focuses on three-dimensional(3 D) thermal illusion devices including shrinker(or invisible cloak),concentrator, amplifier, reshaper, and rotator with arbitrary shape in a general way. In this paper, the corresponding material parameters of thermal illusion devices mentioned above are derived based on the theory of transformation thermodynamics and the simulated results agree well with the theoretical derivations. In addition, the conventional invisible cloak just controls the temperature gradient rather than the temperature value which is more concerned in physical applications. Here,we find that the temperature value of the cloaked object can be controlled by adjusting the location of the original point of the coordinate system. 展开更多
关键词 THERMAL ILLUSION DEVICE METAMATERIALS TRANSFORMATION thermaldynamics
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A highly efficient protein corona-based proteomic analysis strategy for the discovery of pharmacodynamic biomarkers
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作者 Yuqing Meng Jiayun Chen +15 位作者 Yanqing Liu Yongping Zhu Yin-Kwan Wong Haining Lyu Qiaoli Shi Fei Xia Liwei Gu Xinwei Zhang Peng Gao Huan Tang Qiuyan Guo Chong Qiu Chengchao Xu xiao he Junzhe Zhang Jigang Wang 《Journal of Pharmaceutical Analysis》 SCIE CAS CSCD 2022年第6期879-888,共10页
The composition of serum is extremely complex,which complicates the discovery of new pharmacodynamic biomarkers via serum proteome for disease prediction and diagnosis.Recently,nanoparticles have been reported to effi... The composition of serum is extremely complex,which complicates the discovery of new pharmacodynamic biomarkers via serum proteome for disease prediction and diagnosis.Recently,nanoparticles have been reported to efficiently reduce the proportion of high-abundance proteins and enrich lowabundance proteins in serum.Here,we synthesized a silica-coated iron oxide nanoparticle and developed a highly efficient and reproducible protein corona(PC)-based proteomic analysis strategy to improve the range of serum proteomic analysis.We identified 1,070 proteins with a median coefficient of variation of 12.56%using PC-based proteomic analysis,which was twice the number of proteins identified by direct digestion.There were also more biological processes enriched with these proteins.We applied this strategy to identify more pharmacodynamic biomarkers on collagen-induced arthritis(CIA)rat model treated with methotrexate(MTX).The bioinformatic results indicated that 485 differentially expressed proteins(DEPs)were found in CIA rats,of which 323 DEPs recovered to near normal levels after treatment with MTX.This strategy can not only help enhance our understanding of the mechanisms of disease and drug action through serum proteomics studies,but also provide more pharmacodynamic biomarkers for disease prediction,diagnosis,and treatment. 展开更多
关键词 Protein corona NANOPARTICLES Mass spectrometry Proteomic analysis Pharmacodynamic biomarkers
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