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Chinese Journal of Polymer Science 2008年第1期26卷 23-29页

作者： Tu, Wei-xia Zuo, Xiao-bin liu, han-fan Beijing Inst Chem Technol Minist Educ Key Lab Nanomat Div Mol & Mat Simulat Beijing 100029 Peoples R China Chinese Acad Sci Inst Chem Beijing 100080 Peoples R China

Several PVP-stabilized colloidal platinum metals nanoparticles have been synthesized and characterized by FTIR and *** with the pure PVP,carbonyl groups of PVP in the mixture of PVP and the metal precursors or in the PVP-stabilized metal nanoparticles have obvious peak shifts in FTIR *** peak shifts reveal the interaction between PVP and the metal *** interaction between PVP and metal precursors has effect on the formation of the colloidal metal *** of the intera...

关键词： Colloidal metal nanoparticles Metal precursor PVP Interaction

Numerical method and model for calculating thermal storage time for an annular tube with phase change material

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Journal of Central South University 2017年第1期24卷 217-226页

作者：刘泛函徐建新王辉涛王华 State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Kunming University of Science and TechnologyKunming 650093China Faculty of Metallurgical and Energy Engineering Kunming University of Science and TechnologyKunming 650093China Quality Development Institure Kunming University of Science and TechnologyKunming 650093China

For calculating the thermal storage time for an annular tube with phase change material （PCM）, a novel method is proposed. The method is suitable for either low-temperature PCM or high-temperature PCM whose initial temperature is near the melting point. The deviation fit is smaller than 8% when the time is below 2x104 s. Comparison between the predictions and the reported experimental data of thermal storage time at same conditions is investigated and good agreements have been got. Based on this method, the performance of the thermal storage unit and the role of natural convection are also investigated. Results show a linear relation between the maximum amount of stored heat and thermal storage time, and their ratio increases with the height of the thermal storage unit. As the thickness of the cavity increases, natural convection plays an increasingly important role in promoting the melting behavior of paraffin. When the thickness of the cavity is small, natural convection restrains the melting behavior of paraffin.

关键词： natural convection energy storage modeling heat transfer mass transfer

Acute and Chronic Changes and Predictive Value of Tpeak-Tend lor Ventricular Arrhythmia Risk in Cardiac Resynchronization Therapy Patients

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Chinese Medical Journal 2016年第18期129卷 2204-2211页

作者： Cong Xue Wei Hua Chi Cai Li-Gang Ding Zhi-Min liu Xiao-han fan Yun-Zi Zhao Shu Zhang Cardiac Arrhythmia Center State Key Laboratory of Cardiovascular Disease Fuwai Hospital National Center for Cardiovascular Diseases Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100037 China

Background： Prolongation of the Tpeak-Tend （TpTe） interval as a measurement of transmural dispersion of repolarization （TDR） is an independent risk factor for chronic heart failure mortality, However, the cardiac resynchronization therapy＇s （CRT） effect on TDR is controversial. Therefore, this study aimed to evaluate CRTs acute and chronic effects on repolarization dispersion. Furthermore, we aimed to investigate the relationship between TpTe changes and ventricular arrbythmia. Methods： The study group consisted of 101 patients treated with CRT-defibrillator （CRT-D）. According to whether TpTe was shortened, patients were grouped at immediate and l-year follow-up after CRT, respectively. The echocardiogram index and ventricular arrhythmia were observed and compared in these subgroups. Results： For all patients, TpTe slightly increased immediately after CRT-D implantation, and then decreased at the l -year follow-up （from 107 ± 23 to 110 ± 21 rns within 24 h, to 94 ± 24 ms at 1-year follow-up, F 19.366, P 〈 0.001）. No significant difference in the left ventricular reverse remodeling and ventricular tachycardia/ventricular fibrillation （VT/VF） episodes between the TpTe immediately shortened and TpTe immediately nonshortened groups. However, patients in the TpTe at l-year shorten had a higher rate of the lelt ventricular （LV） reverse remodeling （65% vs. 44%, Z2 = 4.495, P - 0.038） and less VT/VF episodes （log-rank test, X2 - 10.207, P = 0.001 ） compared with TpTe I-year nonshortened group. TpTe immediately alter CRT-D independently predicted VT/VF episodes at l-year follow-up （hazard ratio [HR], 1.030; P = 0.001 ）. Conclusions： Patients with TpTe shortened at l -year after CRT had a higher rate of LV reverse remodeling and less VT/VF episodes. The acute changes of TpTe after CRT have minimal value on mechanical reverse remodeling and ventricular arrhythmia.

关键词： Cardiac Resynchronization Therapy Dispersion of Repolarization Tpeak-Tend Interva

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高分子稳定纳米金属簇的合成及催化研究

高分子通报 2005年第4期 76-81页

作者：刘汉范中国科学院化学研究所高分子物理与化学国家重点实验室北京100080

对作者所在研究组在高分子稳定金属纳米簇催化领域的研究工作作出评述。

关键词：高分子纳米金属簇合成方法催化机理纳米金属颗粒

Computed tomography enterography-based radiomics for assessing mucosal healing in patients with small bowel Crohn's disease

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World Journal of Gastroenterology 2025年第3期31卷 62-72页

作者： Hao Ding Yuan-Yuan fang Wen-Jie fan Chen-Yu Zhang Shao-Fei Wang Jing Hu Wei han Qiao Mei Department of Gastroenterology The First Affiliated Hospital of Anhui Medical UniversityHefei 230022Anhui ProvinceChina Department of Radiation Oncology The First Affiliated Hospital of Anhui Medical UniversityHefei 230022Anhui ProvinceChina Department of Gastroenterology Suzhou First People's HospitalSuzhou 234099Anhui ProvinceChina

BACKGROUND Mucosal healing(MH)is the major therapeutic target for Crohn's disease(CD).As the most commonly involved intestinal segment,small bowel(SB)assessment is crucial for CD ***,it poses a significant challenge due to its limited accessibility through conventional endoscopic *** To establish a noninvasive radiomic model based on computed tomography enterography(CTE)for MH assessment in SBCD *** Seventy-three patients diagnosed with SBCD were included and divided into a training cohort(n=55)and a test cohort(n=18).Radiomic features were obtained from CTE images to establish a radiomic *** demographics were analysed to establish a clinical model.A radiomic-clinical nomogram was constructed by combining significant clinical and radiomic *** diagnostic efficacy and clinical benefit were evaluated via receiver operating characteristic(ROC)curve analysis and decision curve analysis(DCA),*** Of the 73 patients enrolled,25 patients achieved *** radiomic-clinical nomogram had an area under the ROC curve of 0.961(95%confidence interval:0.886-1.000)in the training cohort and 0.958(0.877-1.000)in the test cohort and provided superior clinical benefit to either the clinical or radiomic models alone,as demonstrated by *** These results indicate that the CTE-based radiomic-clinical nomogram is a promising imaging biomarker for MH and serves as a potential noninvasive alternative to enteroscopy for MH assessment in SBCD patients.

关键词： Crohn’s disease Computed tomography enterography Mucosal healing Nomogram Radiomics

高分子稳定的钌纳米金属簇选择性催化氢化巴豆醛

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合成化学 2006年第5期14卷 442-445,449页

作者：刘漫红刘汉范李斌青岛科技大学材料科学与工程学院山东青岛266042 中国科学院化学研究所北京100080

以聚乙烯吡咯烷酮稳定的钌纳米金属簇(PVP-Ru)为催化剂,进行了巴豆醛的选择性催化氢化。结果表明,反应体系中水和氢氧化钠的引入,可提高催化活性,但降低了选择性。某些金属阳离子对PVP-Ru的修饰作用使选择性有所提高,但降低了催化活性... 详细信息

以聚乙烯吡咯烷酮稳定的钌纳米金属簇(PVP-Ru)为催化剂,进行了巴豆醛的选择性催化氢化。结果表明,反应体系中水和氢氧化钠的引入,可提高催化活性,但降低了选择性。某些金属阳离子对PVP-Ru的修饰作用使选择性有所提高,但降低了催化活性。尤其是经Co2+修饰后,巴豆醇的最高产率为5.5%,而催化活性由150.4 mol巴豆醛/mol Ru.h降至96.7 mol巴豆醛/mol Ru.h。

关键词：金属纳米簇催化氢化钌巴豆醛

几种土壤铁锰结核对Cr(Ⅲ)的氧化特性ⅡpH、离子强度、温度等因素的影响

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土壤学报 2003年第6期40卷 852-857页

作者：刘桂秋谭文峰冯雄汉刘凡华中农业大学资源与环境学院

以我国几种土壤中铁锰结核为材料 ,研究了不同pH、离子强度和温度条件下氧化锰矿物对Cr(Ⅲ )的氧化。结果表明 :随着体系pH的降低、离子强度的增加以及温度的升高 ,供试铁锰结核对Cr(Ⅲ )的氧化量增加 ,这除了与其氧化还原反应本身消耗H... 详细信息

以我国几种土壤中铁锰结核为材料 ,研究了不同pH、离子强度和温度条件下氧化锰矿物对Cr(Ⅲ )的氧化。结果表明 :随着体系pH的降低、离子强度的增加以及温度的升高 ,供试铁锰结核对Cr(Ⅲ )的氧化量增加 ,这除了与其氧化还原反应本身消耗H+有关外 ,还与氧化锰矿物表面电荷性质和电位变化、共存的氧化铁矿物有关。而上述因素的变化导致N2 1、N4 1号样氧化Cr(Ⅲ )的增幅比N5 1号样的大 ,则可能与氧化锰矿物的结晶程度、晶体构造和铁锰结核中Mn(Ⅳ )

关键词：土壤铁锰结核 Cr 氧化特性 pH值离子强度温度影响因素

乳酸烷基酯在接枝聚硅氧烷β-环糊精固定相的手性拆分

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分析测试学报 2000年第1期19卷 68-70页

作者：张健张汉邦傅若农赵郑通凌云左晓斌刘汉范北京理工大学化工与材料学院北京100081 中国科学院化学所高分子化学实验室北京100080

采用新合成的手性接枝聚硅氧烷β－环糊精（二环［２，６－二－Ｏ－戊基－３－Ｏ－已烯基（－５）］五环［２，６－二－Ｏ－戊基－３－Ｏ－甲基］－ β－ＣＤ－聚硅氧烷）固定相制备了毛细管气相色谱柱，对... 详细信息

采用新合成的手性接枝聚硅氧烷β－环糊精（二环［２，６－二－Ｏ－戊基－３－Ｏ－已烯基（－５）］五环［２，６－二－Ｏ－戊基－３－Ｏ－甲基］－ β－ＣＤ－聚硅氧烷）固定相制备了毛细管气相色谱柱，对合成的不对称化合物乳酸烷基酯进行了有效的手性拆分，结果表明该固定相具有良好的手性分离能力。

关键词：手性拆分环糊精固定相乳酸烷基酯色谱分离

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相变蓄热罐传热过程的数值模拟

昆明理工大学学报（自然科学版） 2012年第6期37卷 49-54页

作者：王辉涛刘泛函王建军王仕博王华昆明理工大学冶金节能减排教育部工程研究中心云南昆明650093

针对翅片管蓄热罐内的热水流动传热以及石蜡的相变蓄热进行了计算流体力学仿真.以蓄热罐的单个蓄热单元为研究对象进行了三维几何建模和非稳态数值计算,所得到的仿真数据能较全面地反映出蓄热单元传热过程中温度场和相变界面的变化规律... 详细信息

针对翅片管蓄热罐内的热水流动传热以及石蜡的相变蓄热进行了计算流体力学仿真.以蓄热罐的单个蓄热单元为研究对象进行了三维几何建模和非稳态数值计算,所得到的仿真数据能较全面地反映出蓄热单元传热过程中温度场和相变界面的变化规律,对蓄热罐的结构设计和优化运行有重要的参考价值.

关键词：翅片蓄热罐计算流体力学仿真石蜡温度场相变界面

Impacts of Nutlin-3a and exercise on murine double minute 2-enriched glioma treatment

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Neural Regeneration Research 2025年第4期20卷 1135-1152页

作者： Yisheng Chen Zhongcheng fan Zhiwen Luo Xueran Kang Renwen Wan fangqi Li Weiwei Lin Zhihua han Beijie Qi Jinrong Lin Yaying Sun Jiebin Huang Yuzhen Xu Shiyi Chen Department of Sport Medicine Huashan HospitalFudan UniversityShanghaiChina Department of Orthopedic Surgery Hainan Province Clinical Medical CenterHaikou Affiliated Hospital of Central South University Xiangya School of MedicineHaikouHainan ProvinceChina Department of Basic Medicine Shanghai Jiao Tong University School of MedicineShanghai Jiao Tong UniversityShanghaiChina Department of Neurosurgery Second Affiliated Hospital of Zhejiang University School of MedicineZhejiang UniversityHangzhouZhejiang ProvinceChina Department of Orthopedics Shanghai General HospitalSchool of Medicine Shanghai Jiao Tong UniversityShanghaiChina Department of Infectious Diseases Children’s Hospital of Fudan UniversityNational Children’s Medical CenterShanghaiChina Department of Rehabilitation The Second Affiliated Hospital of Shandong First Medical UniversityTaianShandong ProvinceChina

Recent research has demonstrated the impact of physical activity on the prognosis of glioma patients,with evidence suggesting exercise may reduce mortality risks and aid neural *** role of the small ubiquitin-like modifier(SUMO)protein,especially post-exercise,in cancer progression,is gaining attention,as are the potential anti-cancer effects of *** used machine learning to create the exercise and SUMO-related gene signature(ESLRS).This signature shows how physical activity might help improve the outlook for low-grade glioma and other *** demonstrated the prognostic and immunotherapeutic significance of ESLRS markers,specifically highlighting how murine double minute 2(MDM2),a component of the ESLRS,can be targeted by *** underscores the intricate relationship between natural compounds such as nutlin-3 and immune *** comprehensive CRISPR screening,we validated the effects of specific ESLRS genes on low-grade glioma *** also revealed insights into the effectiveness of Nutlin-3a as a potent MDM2 inhibitor through molecular docking and dynamic ***-3a inhibited glioma cell proliferation and activated the p53 *** efficacy decreased with MDM2 overexpression,and this was reversed by Nutlin-3a or *** using a low-grade glioma mouse model highlighted the effect of physical activity on oxidative stress and molecular pathway ***,both physical exercise and Nutlin-3a administration improved physical function in mice bearing tumors derived from MDM2-overexpressing *** results suggest the potential for Nutlin-3a,an MDM2 inhibitor,with physical exercise as a therapeutic approach for glioma *** research also supports the use of natural products for therapy and sheds light on the interaction of exercise,natural products,and immune regulation in cancer treatment.

关键词： exercise and SUMO-related gene signatures(ESLRS) glioblastoma management low-grade glioma natural bioactives neural regeneration physical exercise