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Journal of Environmental Sciences 2001年第3期13卷 380-384页

作者： YANG Zhu xian, DU Hui fang, SUN xian bo, xia Ye, ZHOU Zu ming(Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China. Department of Environmental Science and Engineering Fudan University Shanghai 200433 China

Extraction kinetics of phenol with N,N-di(1-methyl-heptyl) acetamide-kerosene using hollow fiber membrane extractor has been studied. The rate regularities and kinetic types of forward and backward extraction were obtained respectively by determining the forward and backward extraction rate under various experimental conditions. The mass transfer mechanism was discussed. both the forward and backward extraction of phenol might be controlled by diffusion processes, and the diffusion resistance for both forward and backward extraction mainly exists in aqueous phase. In addition, ways to optimize the extraction process of phenol were discussed as well.

关键词： extraction kinetics phenol hollow fiber membrane extractor

大恒799肉鸡Myoz1基因CDs区克隆、序列分析及其组织表达研究

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中国家禽 2024年第9期46卷 26-33页

作者：朱师良余春林邱莫寒张增荣熊霞胡陈明杨礼彭涵陈家磊宋小燕夏波刘思洋蒋小松杜华锐李晴云杨朝武四川省畜牧科学研究院动物遗传育种重点实验室四川成都610066 四川大恒家禽育种有限公司四川成都610066

为研究钙调神经磷酸酶肌小结结合蛋白1(Myoz1)的氨基酸序列特征及其在不同组织器官中的mRNA表达水平,试验通过PCR克隆Myoz1 CDs序列,分别利用ExPASYProt⁃param、ProtScale、Target P、DNAStar Protean、SWISS-MODEL、SignalP 4.1 Server、NetPhos2.0Serv⁃er和STRTNG软件,进行Myoz1蛋白理化特性、亲/疏水性、亚细胞结构、蛋白二级结构、三级结构、信号肽、磷酸化位点和蛋白互作分析,并通过实时荧光定量PCR(qRT-PCR)检测Myoz1基因表达量。结果显示:大恒799肉鸡Myoz1基因CDs序列全长为881 bp,可编码293个氨基酸;大恒799肉鸡Myoz1基因氨基酸序列与雉鸡、岩雷鸟位于一个分支,同源性最高,均高于96%,亲缘关系最近;Myoz1蛋白为水溶性蛋白且大多分布于细胞核内,分子式为C1442H_(2)244N400O430S10,分子质量约为32384.70 ku,理论等电点为9.12;Myoz1蛋白不存在信号肽,为分泌蛋白,共存在37个潜在的磷酸化位点、1个N-糖基化潜在位点;Myoz1蛋白二级结构主要由α-螺旋、β-转角和无规则卷曲组成,三级结构预测结果与其一致;Myoz1蛋白与ACTN2、LDB3、LMOD3等Z盘蛋白(PDZ-LIM结构域蛋白,ZASP)以及肌肉生长发育相关蛋白有相互作用的关系;Myoz1在1日龄大恒799肉鸡胸肌和腿肌的表达量显著高于其他组织,且在胸肌中的表达量高于腿肌(P<0.05)。研究表明Myoz1基因可能在肌肉生长发育过程中发挥调控作用。

关键词：大恒肉鸡 Myoz1基因克隆生物信息学分析组织表达

Differentiation of human embryonic stem cells derived mesenchymal stem cells into corneal epithelial cells after being seeded on decellularized SMILE-derived lenticules

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International Journal of Ophthalmology(English edition) 2019年第5期12卷 717-724页

作者： Yao Chen Ye-Wei Yin Yang Zhao xiao-Ying Wu Kelly Young Wei-Tao Song xiao-bo xia Dan Wen Department of Ophthalmology Xiangya HospitalCentral South University Department of Veterans Affairs Miami VA Healthcare System

AIM: To evaluate the feasibility of mesenchymal stem cells(MSCs) to differentiate into corneal epithelial cells after being seeded on the decellularized small incision lenticule extraction(SMILE)-derived lenticules. METHODS: The fresh lenticules procured from patients undergoing SMILE for the correction of myopia were decellularized. The MSCs were subsequently cultivated on those denuded lenticules. The MSCs without lenticules were used as a control. The proliferation activity of the MSCs after seeding 24 h was quantitatively determined with the Cell Counting Kit-8(CCK-8) assay. Immunofluorescence staining and quantitative reverse transcription polymerase chain reaction(qRT-PCR) were used to assess the marker expression in differentiated MSCs. RESULTS: The data showed that both fresh and decellularized lenticules could significantly promote the proliferation of MSCs, compared to that in control(P=0.02 for fresh lenticules, P=0.001 for decellularize ones, respectively). The MSCs seeded on both lenticules were positive for cytokeratin 3(CK3) staining. The expression of CK3 increased 5-fold in MSCs seeded on fresh lenticules and 18-fold on decellularized ones, compared to that in control. There was a significant difference in the expression of CK3 in MSCs seeded on fresh and decellularized lenticules(P0.05), while the expression of these markers was decreased in MSCs seeded on decellularized ones. CONCLUSION: These results suggest that the decellularized lenticules might be more suitable for MSCs to differentiate into corneal epithelial cells, which offersthe prospect of a novel therapeutic modality of SMILEderived lenticules in regenerative corneal engineering.

关键词： mesenchymal stem cells small incision lenticule extraction lenticules decellularization corneal epithelial cells

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基于双目视觉的机器人自定位方法研究

华中科技大学学报（自然科学版） 2015年第S1期43卷 104-108页

作者：张华夏菠西南科技大学特殊环境机器人技术四川省重点实验室四川绵阳621010

研究了一种利用双目立体视觉的机器人自定位方法.首先提取双目图像序列的Harris角点特征,并计算其水平与垂直方向上的Sobel响应,基于此响应,采用绝对误差累计的最小窗口查找(SAD)原理进行立体匹配.将改进的RANSAC算法用于特征匹配点优化... 详细信息

研究了一种利用双目立体视觉的机器人自定位方法.首先提取双目图像序列的Harris角点特征,并计算其水平与垂直方向上的Sobel响应,基于此响应,采用绝对误差累计的最小窗口查找(SAD)原理进行立体匹配.将改进的RANSAC算法用于特征匹配点优化中,利用高斯牛顿迭代法求解机器人位姿,实现了机器人的自定位.室内、外实验,及与boofCV视觉库中的立体视觉定位算法的对比分析,证明该方法在运算速度、定位精度和稳定性等方面均能满足实际应用需求.

关键词：机器人双目视觉特征匹配位姿估计定位

齿轮耦合影响转子滑动轴承系统稳定性的理论证明

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振动与冲击 2008年第1期27卷 135-139页

作者：夏伯乾郑州大学机械工程学院河南郑州450001

从理论上证明齿轮耦合的转子滑动轴承系统的稳定性与转子系统的扭转动力学参数有关,齿轮耦合使系统的失稳转速下降、稳定性裕度降低;由于齿轮耦合,转子的横向振动与扭转振动之间发生能量交换,转子的扭转振动亦受到来自滑动轴承油膜的阻... 详细信息

从理论上证明齿轮耦合的转子滑动轴承系统的稳定性与转子系统的扭转动力学参数有关,齿轮耦合使系统的失稳转速下降、稳定性裕度降低;由于齿轮耦合,转子的横向振动与扭转振动之间发生能量交换,转子的扭转振动亦受到来自滑动轴承油膜的阻尼作用,从而使转子横向振动受到的轴承油膜阻尼作用减小,导致整个转子系统的失稳转速下降、稳定性降低。

关键词：齿轮耦合轴系稳定性理论证明

Separation of Ephedrines Using 1-Butyl-3-methylimidazolium-tetrafluoroborate Ionic Liquids as Eluent in High-performance Liquid Chromatography (HPLC)

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Chinese Chemical Letters 2003年第6期14卷 603-604页

作者： Li Jun HE, Wen Zhu ZHANG, bo WEN, xia LIU, Sheng xiang JIANG* Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000 Lanzhou Inst. of Chemical Physics Chinese Academy of Science Lanzhou 730000 China

A simple, effective HPLC method for separation of ephedrines was achieved by using 1-butyl-3-methylimidazolium-tetrafluoroborate ionic liquid solution (0.1% v/v) as eluent at pH 3.0. The involved mechanism may be due to that the imidazolium cations can effectively shield the silanol groups of alkylsilica surface, thereby decreasing band tailing and increasing the separation efficiency.

关键词： Ionic liquid ephedrine HPLC.

Corrugated Graphene Paper Reinforced Silicone Resin Composite for Efficient Interface Thermal Management

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Chinese Journal of Polymer Science 2024年第7期42卷 1002-1014,I0010页

作者： bo-Wen Wang Heng Zhang Qing-xia He Hui-Tao Yu Meng-Meng Qin Wei Feng Tianjin Key Laboratory of Composite and Functional Materials School of Materials Science and EngineeringTianjin UniversityTianjin300350China International Engineering Institute Tianjin UniversityTianjin300350China

With the rapid development of high-power-density electronic devices,interface thermal resistance has become a critical barrier for effective heat management in high-performance electronic ***,there is an urgent demand for advanced thermal interface materials(TIMs)with high cross-plane thermal conductivity and excellent compressibility to withstand increasingly complex operating *** achieve this aim,a promising strategy involves vertically arranging highly thermoconductive graphene on ***,with the currently available methods,achieving a balance between low interfacial thermal resistance,bidirectional high thermal conductivity,and large-scale production is ***,we prepared a graphene framework with continuous filler structures in in-plane and cross-plane directions by bonding corrugated graphene to planar graphene *** interface interaction between the graphene paper framework and polymer matrix was enhanced via surface functionalization to reduce the interface thermal *** resulting three-dimensional thermal framework endows the polymer composite material with a cross-plane thermal conductivity of 14.4 W·m^(-1)·K^(-1)and in-plane thermal conductivity of 130W·m^(-1)·K^(-1)when the thermal filler loading is 10.1 wt%,with a thermal conductivity enhancement per 1 wt%filler loading of 831%,outperforming various graphene structures as *** its high thermal conductivity,low contact thermal resistance,and low compressive modulus,the developed highly thermoconductive composite material demonstrates superior performance in TIM testing compared with TFLEX-700,an advanced commercial TIM,effectively solving the interfacial heat transfer issues in electronic *** novel filler structure framework also provides a solution for achieving a balance between efficient thermal management and ease of processing.

关键词： Graphene paper Vertically aligned structure Cross-plane thermal conductivity Low compressive modulus Thermal interface material

Morphological Classification of Infrared Galaxies Based on WISE

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Research in Astronomy and Astrophysics 2024年第4期24卷 222-236页

作者： Zhi-Ren Pan bo Qiu Cui-xiang Liu A-Li Luo xia Jiang xiao-Yu Guo School of Electronic and Information Engineering Hebei University of TechnologyTianjin 300401China Key Laboratory of Optical Astronomy National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China

This study introduces a novel convolutional neural network,the WISE Galaxy Classification Network(WGC),for classifying spiral and elliptical galaxies using Wide-field Infrared Survey Explorer(WISE)*** attains an accuracy of 89.03%,surpassing the combined use of K-means or SVM with the Color-Color method in more accurately identifying galaxy *** enhanced variant,WGC_mag,integrates magnitude parameters with image features,further boosting the accuracy to 89.89%.The research also delves into the criteria for galaxy classification,discovering that WGC primarily categorizes dust-rich images as elliptical galaxies,corresponding to their lower star formation rates,and classifies less dusty images as spiral *** paper explores the consistency and complementarity of WISE infrared images with SDSS optical images in galaxy morphology *** SDSS Galaxy Classification Network(SGC),trained on SDSS images,achieved an accuracy of 94.64%.The accuracy reached 99.30% when predictions from SGC and WGC were *** the complementarity of features in WISE and SDSS images,a novel variant of a classifier,namely the Multi-band Galaxy Morphology Integrated Classifier,has been *** classifier elevates the overall prediction accuracy to 95.39%.Lastly,the versatility of WGC was validated in other data *** the HyperLEDA data set,the distinction between elliptical galaxies and Sc,Scd and Sd spiral galaxies was most pronounced,achieving an accuracy of 90%,surpassing the classification results of the Galaxy Zoo 2 labeled WISE data *** research not only demonstrates the effectiveness of WISE images in galaxy morphology classification but also represents an attempt to integrate multi-band astronomical data to enhance understanding of galaxy structures and evolution.

关键词： methods:data analysis infrared:galaxies galaxies:spiral galaxies:elliptical and lenticular cD

Dr. GUAN Zun-hui's Clinical Experience in Treating Simple Obesity by Acupuncture

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Journal of Acupuncture and Tuina Science 2003年第6期1卷 6-8页

作者： xia bo xiaO Yuan-chun People's Hospital of Fumin Country Yunnan China 650400

Objective The clinical effects of acupuncture and massaging abdomen with salt the treatment of simple obesity was ***: Eighty cases were randomized into two groups: treatment group in which 40 cases were treated by acupuncture and massaging abdomen with salt and control group in which another 40 cases were treated by conventional acupuncture. Their effects were observed and ***: The clinical cure rate and marked effective rate in treatment group were significantly higher than in control group (Pborn in 1942, professor, senior consultant doctor, vice president of Yunnan Academy of Acupuncture, visiting professor of Canada College of TCM and Acupuncture, honorary consultant of Canada Academy of TCM and Acupuncture. He is awarded the Special Allowance of China State Department, and is the second group TCM specialist in China. In clinic, he is specialize in differentiation of diseases according to meridian theory, well versed in traditional acupuncture technique such as midnight-noon elb-flow, eight methods of intelligent turtle.Author: xia bo (1970-), male, attending physicianTranslator: xiaO Yuan-chun

关键词： Obesity Acupuncture-Moxibustion Tuina Massage

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可回收下腔静脉滤器留置的高危临床特征

血管与腔内血管外科杂志 2024年第5期10卷 578-582,587页

作者：查振平潘力生方灿军丁振聂宗杰柏霞鲍士秀安庆市立医院血管外科安徽安庆246003 安庆市立医院甲状腺乳腺外科安徽安庆246003

目的了解下腔静脉滤器放置及回收情况,分析可回收滤器释放的适应证分布,研究滤器留置的高危临床特征。方法收集2021年9月至2022年9月于安庆市立医院接受下腔静脉滤器置入的116例患者的临床资料。分析所有患者的滤器置入、适应证分布、... 详细信息

目的了解下腔静脉滤器放置及回收情况,分析可回收滤器释放的适应证分布,研究滤器留置的高危临床特征。方法收集2021年9月至2022年9月于安庆市立医院接受下腔静脉滤器置入的116例患者的临床资料。分析所有患者的滤器置入、适应证分布、并发症发生情况。通过随访确定滤器回收情况,统计主观回收成功率和技术回收成功率,明确患者对滤器取出的认知状态和患者的生存情况。根据滤器取出情况将患者分为滤器取出组(n=62)与滤器留置组(n=54),比较两组患者的临床特征,并分析下腔静脉滤器留置的危险因素。结果116例患者中,滤器置入的相对适应证患者96例(82.8%),绝对适应证患者20例(17.2%),无预防性置入病例。下腔静脉滤器的主观尝试回收成功率为53.4%(62/116),技术回收成功率为100%。两组患者的年龄、肿瘤合并情况、是否血管外科出院、存在抗凝禁忌情况及诊断条目比较,差异均有统计学意义(P﹤0.05)。多因素分析结果显示,年龄≥65岁、诊断条目≥7条、非血管外科出院均是下腔静脉滤器留置的独立危险因素(P﹤0.05)。结论患者对滤器的选择和术后专科化的随访管理对滤器的取出率均有影响,临床中应根据高危因素决定是否放置滤器及选择合适的滤器,并且加强术后随访管理,提高下腔静脉滤器取出率。

关键词：下腔静脉滤器可回收滤器适应证滤器留置危险因素