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N阶色散媒质宽频电磁散射特性的高效分析

系统工程与电子技术 2010年第11期32卷 2313-2316页

作者：陈明生吴琼沙威黄志祥吴先良合肥师范学院物理与电子工程系安徽合肥230601 安徽大学电子科学与技术学院安徽合肥230039 香港大学电子工程系

在目标宽频电磁响应分析中引入Maehly逼近理论,应用矩量法(method of moments,MOM)求解给定频带内若干节点处目标的表面电、磁流,以形成关于电、磁流的Chebyshev多项式逼近,最后转化为Maehly逼近以提高计算精度。结合PMCHW方程,对各种... 详细信息

在目标宽频电磁响应分析中引入Maehly逼近理论,应用矩量法(method of moments,MOM)求解给定频带内若干节点处目标的表面电、磁流,以形成关于电、磁流的Chebyshev多项式逼近,最后转化为Maehly逼近以提高计算精度。结合PMCHW方程,对各种形状三维介质目标、N阶色散介质目标的宽带电磁散射特性进行了分析。数值仿真表明:在不占用更多内存的情况下,Maehly逼近方法能够有效提高宽频分析的计算效率。

关键词：矩量法 PMCHW方程 Maehly逼近宽带雷达散射截面

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异腈参与的光催化反应研究进展

有机化学 2022年第12期42卷 4220-4246页

作者：何燕黄天姿史小琴陈艳吴琼徐州工程学院材料与化学工程学院江苏徐州221018

异腈是一类有价值的C1结构单元,广泛应用于有机化学、组合化学、生物医药等领域,其衍生物更是构建生物活性分子和复杂的天然产物的有效模块.根据异腈参与光催化反应的机制进行分类,综述了近五年异腈参与光催化反应的研究进展,着重讨论... 详细信息

异腈是一类有价值的C1结构单元,广泛应用于有机化学、组合化学、生物医药等领域,其衍生物更是构建生物活性分子和复杂的天然产物的有效模块.根据异腈参与光催化反应的机制进行分类,综述了近五年异腈参与光催化反应的研究进展,着重讨论了光催化剂、底物适用性以及反应机制,并对该领域存在的挑战以及未来发展趋势进行了浅谈和展望.

关键词：异腈可见光催化协同光催化可见光诱导的过渡金属催化

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绝对重力仪研制中仪器测量高度的计算

武汉大学学报（信息科学版） 2017年第12期42卷 1773-1778页

作者：吴琼滕云田张兵黄大伦中国地震局地球物理研究所北京100081 防灾技术学院河北廓坊065201

在激光干涉绝对重力仪的研制中,每次测量落体都要自由下落7~20cm的距离,在此过程中地表重力垂直梯度引入的误差最高可达60×10-8 m/s2。因此,需要计算出每次测量值对应的测量高度,即在该位置时,落体运动的距离内重力垂直梯度对绝对重力... 详细信息

在激光干涉绝对重力仪的研制中,每次测量落体都要自由下落7~20cm的距离,在此过程中地表重力垂直梯度引入的误差最高可达60×10-8 m/s2。因此,需要计算出每次测量值对应的测量高度,即在该位置时,落体运动的距离内重力垂直梯度对绝对重力测量值的综合误差为零。基于对落体下落运动方程的分析,提出一了种新的绝对重力仪测量高度的计算方法。对比发现,当起始计算时间较小并接近于0(小于0.015s)时,该算法与已有的算法结果具有较好的一致性,最大偏差不大于3 mm,梯度归算误差不大于1×10-8 m/s2(μGal)。在仪器自主研发的过程中,当起始计算时间较长(大于0.015s)时,该算法可以更合理地计算绝对重力测量值对应的测量高度。

关键词：绝对重力仪有效高度激光干涉重力垂直梯度

Peptide Cy_(RL-QN15)accelerates hair regeneration in diabetic mice by binding to the Frizzled-7 receptor

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Zoological Research 2024年第6期45卷 1287-1299页

作者： Yu-Tong wu Ze-qiong Ru Ying Peng Zhe Fu Qiu-Ye Jia Zi-Jian Kang Yuan-Sheng Li Yu-Bing huang Sai-Ge Yin Kun Guo Nai-Xin Liu Cheng-An Feng Jing Tang Bai-Yu Zhang Zhi Yang Ying Wang Xin-Wang Yang Department of Anatomy and Histology&Embryology Faculty of Basic Medical ScienceKunming Medical UniversityKunmingYunnan 650500China Key Laboratory of Chemistry in Ethnic Medicinal Resources&Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal Endophytes State Ethnic Affairs Commission&Ministry of EducationSchool of Ethnic MedicineYunnan Minzu UniversityKunmingYunnan 650504China Department of Biochemistry and Molecular Biology Faculty of Basic Medical ScienceKunming Medical UniversityKunmingYunnan 650500China Department of Urology First Affiliated Hospital of Kunming Medical UniversityKunmingYunnan 650500China Dermatology First Affiliated Hospital of Kunming Medical UniversityKunmingYunnan 650500China Yunnan Key Laboratory of Pharmacology for Natural Products Kunming Medical UniversityKunmingYunnan 650500China

Individuals with diabetes frequently face serious challenges,including delayed wound healing and increased risk of ***,the regeneration of hair follicles plays a crucial role in accelerating diabetic skin damage repair,reducing the risk of infection,and enhancing overall skin *** has predominantly emphasized the re-epithelialization of diabetic wounds,with a paucity of in-depth studies on hair follicle *** the current study,we explored the effects of a bioactive amphibian-derived peptide,Cy_(RL-QN15),on promoting hair regeneration in a diabetic skin *** vivo experiments demonstrated that local treatment with Cy_(RL-QN15)not only accelerated wound healing of scalded skin on the backs of diabetic Kunming(KM)mice but also improved growth of damaged hair ***,back-shaved diabetic C57BL/6 mice showed a significant increase in the growth of newly formed hair after 28 days of continuous Cy_(RL-QN15)*** analysis indicated that the hairregenerating effects of Cy_(RL-QN15)were closely associated with the proliferation and migration of hair follicle stem cells(HFSCs).Cy_(RL-QN15)enhanced intracellularβ-catenin expression by binding to the Frizzled-7 receptor on the surface of *** up-regulation inβ-catenin modulated the levels of downstream proteins,such as cMYC,Cyclin D1,and Lef1,ultimately inducing hair *** study not only reveals the robust effects of the bioactive peptide Cy_(RL-QN15)in hair follicle regeneration but also provides novel avenues for the development of more targeted and effective therapeutics for diabetic wound healing in the future.

关键词： CyRL-QN15 Hair follicle stem cells(HFSCs) β-catenin Frizzled-7

操作次数对Ag/ZnO电触头电弧侵蚀行为的影响

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中国有色金属学报 2021年第5期31卷 1285-1298页

作者：徐国富黄润章元梦吴琼吴春萍中南大学材料科学与工程学院长沙410083 中南大学有色金属材料科学与工程教育部重点实验室长沙410083

通过电弧侵蚀模拟实验、三维轮廓仪(3DOP)和扫描电镜(SEM)等,研究操作次数对Ag/ZnO电触头电弧侵蚀行为的影响。结果表明:不同操作次数下,Ag/ZnO电触头电弧能量概率分布与电弧时间概率分布相似,电弧能量平均值与电弧时间平均值变化趋势... 详细信息

通过电弧侵蚀模拟实验、三维轮廓仪(3DOP)和扫描电镜(SEM)等,研究操作次数对Ag/ZnO电触头电弧侵蚀行为的影响。结果表明:不同操作次数下,Ag/ZnO电触头电弧能量概率分布与电弧时间概率分布相似,电弧能量平均值与电弧时间平均值变化趋势一致。当操作次数为10000次时,Ag/ZnO电触头的电弧能量、电弧时间、温度变化、质量变化均最大,而电阻率变化最小。随着操作次数的增加,Ag/ZnO电触头表面形貌变化越来越大;相同操作次数下,阳极电触头表面形貌变化比阴极大。在电弧作用下,Ag/ZnO电触头主要发生喷溅侵蚀,并在触头表面观察到热水袋状、甜甜圈状、丝状等不常见典型电弧侵蚀形貌特征。

关键词： Ag/ZnO电触头操作次数电弧侵蚀

合金元素对Ag/SnO_(2)材料制备初期组织演变的影响

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中国有色金属学报 2022年第12期32卷 3729-3745页

作者：吴琼徐国富黄润章元梦吴春萍中南大学材料科学与工程学院长沙410083 中南大学有色材料科学与工程教育部重点实验室长沙410083

Ag/SnO_(2)电接触材料具有良好的耐电弧侵蚀和抗材料转移性能,广泛应用于低压断路器和继电器中。然而,其制备初期组织和物理性能对产品铆钉的电性能有着最直接和极为重要的影响。采用X射线衍射分析仪(XRD)、场发射扫描电镜(SEM)和电子... 详细信息

Ag/SnO_(2)电接触材料具有良好的耐电弧侵蚀和抗材料转移性能,广泛应用于低压断路器和继电器中。然而,其制备初期组织和物理性能对产品铆钉的电性能有着最直接和极为重要的影响。采用X射线衍射分析仪(XRD)、场发射扫描电镜(SEM)和电子探针显微分析仪(EPMA)等手段,分析合金元素Sb、La和In对Ag/SnO_(2)材料制备初期组织演变和物理性能的影响。结果表明:添加Sb、La和In的Ag/SnO_(2)烧结坯中除了含Ag和SnO_(2)相外,还分别含有AgSbO3、La2Sn2O7和2In2O3∙3SnO_(2)相。添加Sb的Ag/SnO_(2)烧结坯中氧化物主要在粉末边界上呈网络状分布;添加La的Ag/SnO_(2)烧结坯中氧化物颗粒细小,且均匀弥散分布;添加In的Ag/SnO_(2)烧结坯中氧化物呈块状分布,且存在纯银层。添加In的Ag/SnO_(2)材料的电导率和硬度最高,添加Sb的Ag/SnO_(2)材料的相对密度最大。

关键词： Ag/SnO_(2)材料合金元素组织演变物理性能

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农户亲环境意向的影响因素及其效应分解研究

干旱区资源与环境 2017年第12期31卷 45-49页

作者：崔亚飞黄少安吴琼山东大学经济研究院安徽财经大学财政与公共管理学院

利用大样本调研数据,基于计划行为理论和结构方程模型,实证检验了态度、主观规范和知觉行为控制对亲环境意向的效应。结果表明:(1)态度对亲环境意向的直接效应和总效应都是最大,或者说农户对亲环境意向普遍具有很高的态度;(2)主观规范... 详细信息

利用大样本调研数据,基于计划行为理论和结构方程模型,实证检验了态度、主观规范和知觉行为控制对亲环境意向的效应。结果表明:(1)态度对亲环境意向的直接效应和总效应都是最大,或者说农户对亲环境意向普遍具有很高的态度;(2)主观规范对农户亲环境意向也有较高的直接效应和总效应;(3)外部因素对农户知觉行为控制均有较强的影响,而且知觉行为控制与态度和主观规范之间相互反向变化,进而抑制了亲环境意向的进一步提升,呈现出显著短板效应。因此,应积极制定和完善相关制度,努力解决亲环境意向提升中的短板现象。

关键词：亲环境意向影响因素效应分解短板现象

Effects of sleep status on renal function in patients with chronic kidney disease: a systematic review

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Journal of Hainan Medical University 2019年第5期25卷 31-36页

作者： qiong huang Chen-Di Dong Ding-Jun Zhang Min Zhang Li Luo Bing-Qing Xia Yi-Fan wu The Second Clinical College Guangzhou University of Chinese MedicineGuangzhou 510000China Department of Nephrology the Second Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhou 510000China

Objective:To systematically evaluate the effects of sleep status on renal function in patients with chronic kidney disease (CKD).Methods: To search the relevant literature related to the effects of sleep status on renal function of CKD patients on PubMed database, EMBase database, the Cochrane Library database, CNKI database, Chinese Biomedical Literature Database, VIP and Wanfang database from the initial to June 2018, all literature that met the criteria were included. According to the type of studies, the quality of the literature was evaluated by NOS scale in the cohort study and AHRQ scale in the cross-sectional study, and systematically evaluated the outcome indicators, the main outcome indicators were estimated glomerular filtration rate (eGFR) and endogenous creatinine clearance rate (Ccr), while the secondary indicators were Pittsburgh Sleep Quality Index (PSQI), Sleep Quality (SQ), Serum Creatinine (Scr), Hemoglobin (Hb), Albumin (ALB) and Urine Protein/Creatinine Ratio (UPCR).Results: Four literature and one meeting abstract were included in this study, of which four were cohort studies, three of them the NOS quality evaluations were high, one of them was medium, the remaining one was cross-sectional study, and the AHRQ quality evaluation was medium. This study shows that sleep status has a certain correlation with renal function. Shorter sleep time or poor sleep quality can lead to deterioration of renal function. Among them, the research data of Sabbatinit research team in Italy showed that Ccr gradually decreased with the increased of the PSQI;studies of Cohen research team and the Ricardo research team in the United States showed that eGFR decreased with the increased of the PSQI;the study of Kumar research team in the United States showed that the lower SQ , the worse renal function;the study of Knutson' research team in British showed that the shorter sleep time, the lower eGFR. In addition, studies showed that sleep index also has influence on Hb,

关键词： Sleep status Chronic kidney disease Renal function System review

EVALUATION OF EFFICACY AND SAFETY OF DIACEREIN IN KNEE OSTEOARTHRITIS IN CHINESE PATIENTS

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Chinese Medical Sciences Journal 2006年第2期21卷 75-80页

作者： Wen-jie Zheng Fu-lin Tang Jun Li Feng-chun Zhang Zhan-guo Li Yin Su Dong-hai wu Li Ma Hui-qiong Zhou Feng huang Jiang-lin Zhang Dong-feng Liang Yi-xiong Zhou Hui Xu Department of Rheumatology Peking Union Medical College Hospital Chinese Academy of Medical Sciences ＆ Peking Union Medical College Beijing 100730 Department of Rheumatology People＇s Hospital Medical School of Peking University Beijing 100044 Department of Rheumatology China-Japan Friendship Hospital Beijing 100029 Department of Rheumatology General Hospital of People＇s Liberation Army Beijing 100853 Department of Orthopedic Surgery Jishuitan Hospital Medical School of Peking University Beijing 100035

Objective To evaluate the efficacy and safety of diacerein in patients with knee osteoarthritis (OA). Methods A total of 223 patients satisfying the American College of Rheumatology criteria for knee OA were chosen for this 17-week, randomized, double-dummy, diclofenac sodium-controlled trial, with diacerein dosage of 100 mg/d and diclofenac sodium of 75mg/d. Efficacy and safety of both drugs were evaluated. Results Totally 106 patients in the diacerein group and 107 patients in the diclofenac group were considered qualified for the evaluation. After 12 weeks of treatment, the total effective rates of patients/physicians’ overall assessment in diacerein and diclofenac groups were 65.4%/61.6% and 61.2%/61.2%, respectively (P>0.05). The primary efficacy parameter [visual analog scale (VAS) assessment of pain on 20 metres walking] and the secondary efficacy parameters [tenderness on palpation, Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), and 36-item Short-Form (SF-36) Health Survey] significantly improved compared with baseline in both groups (P<0.05). In the follow-up period, there were no obvious changes in above parameters in diacerein group. However, in diclofenac group, pain on 20 metres walking, tenderness on palpation, and WOMAC became aggravated after withdrawing the drug for 4 weeks (P<0.05). Moreover, the consumption of paracetamol was significantly lower in diacerein group than in diclofenac group during follow-up (P<0.001). The incidences of related adverse events were 35.7% in diacerein and 45.1% in diclofenac group, respectively. Mild-to-moderate gastrointestinal disorders were the most frequent adverse events. Conclusions Diacerein is as effective as diclofenac sodium in treating patients with knee OA. Furthermore, it has better extended effect and a good safety profile. It is generally well tolerated and has no severe adverse effect.

关键词： osteoarthritis drug evaluation diacerein diclofenac sodium