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18篇 您的检索式:作者名="Zheng Hongping"
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1Tunable luminescence,energy transfer and excellent thermal stability of SrMg2(PO4)2:Ce^3+,Tb^3+ phosphors for LEDs显示文摘A series of novel SrMg2(PO4)2:Ce^3+,Tb^3+(SMP:Ce^3+,Tb^3+)phosphors with tunable emission spectra were produced via high temperature solid phase method.XRD,fluorescence spectrum and fluorescence lifetime for SMP:Ce^3+,Tb^3+were studied in detail.Under the excitation at 308 nm,SMP:Ce^3+,Tb^3+samples can emit high efficiency tunable blue-green light by controlling the proportion of dopant concentration.Through the spectral overlap and the regular change of fluorescence lifetime,it is proved that there is a significant energy transfer between Ce^3+and Tb^3+in SMP matrix and the energy transfer mechanism is determined to be an electric dipole-dipole interaction with energy transmission efficiency of 55%.In additional,Commission International de L’Eclairage(CIE)color coordinates and thermal stability were studied.All above findings suggest that SMP:Ce^3+,Tb^3+can be regarded as the potential bluish green phosphor for LED applications.Wanxin Mi Jun Zheng Peng Qiao Lili Cao Siqi Chu Hongping Ma 2021Journal of Rare Earths2021,39,1:4
2Home risk factors for childhood pneumonia in Nanjing, China显示文摘Pneumonia is a major cause of childhood morbidity in China.Many studies of rural areas have found an association between pneumonia and air pollution from burning of bio-mass.The present study is of children living in urban,modern homes without burning of bio-mass.In order to investigate potential home risk factors associated with children’s pneumonia,China Child Home Health(CCHH)questionnaires were randomly distributed to parents of 6461 children in 23 kindergartens in all 11 districts of Nanjing,covering urban,suburban,and industrial areas.The 4014 valid questionnaires(response rate 65.7%)were returned and have been analyzed.The lifetime incidence of pneumonia in Nanjing children 1–8 years old is 26.7%.The incidence of croup,asthma and frequent common colds was strongly associated with pneumonia,as was a history of allergies in the family,and persons other than parents(for example grandparents or nanny)taking care of the child.Several home environmental factors,namely,dampness,lack of ventilation,using coal or natural gas(electricity as reference)for cooking,new furniture,and'modern'floor and wall covering materials were also significantly associated with pneumonia.The indoor environment typical of modern apartments in China was a risk factor for pneumonia among children.ZHENG XiaoHong QIAN Hua ZHAO YiLi SHEN HongPing ZHAO ZhuoHui SUN YueXia SUNDELL Jan 2013Chinese Science Bulletin2013,58,34:3
3The oral microbiome of pregnant women facilitates gestational diabetes discrimination显示文摘The oral microbiota plays an important role in the development of various diseases,whereas its association with gestational diabetes mellitus (GDM) remains largely unclear.The aim of this study is to identify biomarkers from the oral microbiota of GDM patients by analyzing the microbiome of the saliva and dental plaque samples of 111 pregnant women.We find that the microbiota of both types of oral samples in GDM patients exhibits differences and significantly varies from that of patients with periodontitis or dental caries.Using bacterial biomarkers from the oral microbiota,GDM classification models based on support vector machine and random forest algorithms are constructed.The area under curve (AUC) value of the classification model constructed by combination of Lautropia and Neisseria in dental plaque and Streptococcus in saliva reaches 0.83,and the value achieves a maximum value of 0.89 by adding clinical features.These findings suggest that certain bacteria in either saliva or dental plaque can effectively distinguish women with GDM from healthy pregnant women,which provides evidence of oral microbiome as an informative source for developing noninvasive biomarkers of GDM.Xiaoqing Li Jiayong Zheng Xiuling Ma Bing Zhang Jinyang Zhang Wenhuan Wang Congcong Sun Yeping Wang Jianqiong Zheng Haiying Chen Jiejing Tao Hai Wang Fengyi Zhang Jinfeng Wang Hongping Zhang 2021Journal of Genetics and Genomics2021,48,1:2
4Highly efficient perovskite solar cells based on symmetric hole transport material constructed with indaceno[1,2-b:5,6-b’]dithiophene core building block显示文摘Two novel hole transport materials (HTMs) with indaceno[1,2-b:5,6-b’]dithiophene (IDT) as core building blocks,termed IDT1 and IDT2,were designed and synthesized.The side alkyl chains were introduced to regulate and control the morphology and stacking behavior of HTMs,and the peripheral triarylamine arms were introduced to adjust the energy levels and to facilitate efficient hole transport.Applied in mesoporous structured perovskite solar cells (PSCs),HTM IDT1 achieved higher power conversion efficiency (PCE,19.55%) and better stability than Spiro-OMeTAD (19.25%) and IDT2 (15.77%) based PSC.These results suggest the potential of IDTl as a promising HTM for PSCs.Cheng Wu Cheng Chen Li Tao Xingdong Ding Mengmeng Zheng Hongping Li Gongqiang Li Hongfei Lu Ming Cheng 2020Journal of Energy Chemistry2020,29,4:2
5Differential response of multiple zebrafish hepatic F-box protein genes to 17α-ethinylestradiol treatment显示文摘Estrogens are accumulating in environment and their effects on a variety of reproductive processes and tumorigenesis were reported by previous study, but the mechanism of estrogen promoting neoplasia was still not clear. F-box protein (FBP) is the component of E3 ubiquitin ligase which takes part in a variety of key biological processes. In this study, using mature male zebrafish, which are more sensitive to estrogen treatment, we examined influence of 17α-ethinylestradiol (EE2) exposure on the expression of a series of hepatic FBP genes, which take part in a variety of biological processes, including tumorigenesis. The influence of EE2 on the expression of hepatic mRNA concentrations of FBP genes were quantified based on the expression of the optimal internal control gene in male zebrafish after 7-day exposure to EE2, from a low-dose concentration (1 ng/L) to environmentally relevant concentrations (10, 100 ng/L). Our results showed that EE2 exposure reduced the expression of fbxl14a, fbxl14b, fbxo25 and β-TRCP2b, but enchanced the expression of skp2. While the alterations in fbxl2, fbxw7, fbxo9, β-TRCP2a, fbxl18 and fbxo45 mRNA levels were not observed after EE2 exposure. Thus, our results showed that the expression of hepatic FBP genes exhibited differentially in male zebrafish exposed EE2. The changes of the expression level of FBP genes induced by EE2 may be an important clue to elucidate the correlations of estrogen and hepatic tumors.Hongping Zheng Shifeng Li Zhili Wu Yunbin Zhang Shengnan Hu Yuanchang Yan Yiping Li 2011Journal of Environmental Sciences2011,23,4:2
6The immunomodulatory effect of bone marrow stromal cells (BMSCs) on interleukin (IL)-23/IL-17-mediated ischemic stroke in mice显示文摘Shuainan Ma Di Zhong Hongping Chen Yi Zheng Yanyan Sun Jian Luo Hulun Li Guozhong Li Yanhong Yin 2013Journal of Neuroimmunology . 2013 (1-2)2013,,1:1
7显示文摘ZHENG Chaogui LIU Hongping YE Yupu(Y.P.Yeh) Peking University Beijing ChinaQIAO Zhiyu University of Science and Technology Beijing Beijing China ZHENG Chaogui Dept.of Chemistry Peking University Beijing 100871 China 1990Acta Metallurgica Sinica(English Edition)1990,,10:1
8Propagation properties of a sinh Gaussian beam in a Kerr medium显示文摘Chen Ruipin Zheng Hongping Chu Xinxiang 2011Applied Physics B Lasersand Optics2011,102,3:1
9The application of chromium substituted magnetite as heterogeneous Fenton catalyst for the degradation of aqueous cationic and anionic dyes显示文摘Xiaoliang Liang Yuanhong Zhong Hongping He Peng Yuan Jianxi Zhu Sanyuan Zhu Zheng Jiang 2012Chemical Engineering Journal2012,,:1
10Towrard-target precision pesticide application and its system design 显示文摘Zheng Jiaqiang Zhou Hongping Xu Youlin Zhao Maocheng Zhang Huichun Ge Yufeng Xiang Haitao Chen Yong 2005Transactions of the CSAE2005,21,11:1
11Optimal Gestational Weight Gain for Women with Gestational Diabetes Mellitus—China,2011–2021显示文摘Summary What is already known about this topic?Joint effects of gestational weight gain(GWG)and hyperglycemia on adverse pregnancy outcomes suggest that lower optimal GWG is optimal for women with gestational diabetes mellitus(GDM).However,there is still a lack of guidelines.What is added by this report?Optimal weekly GWG range after diagnosis of GDM for underweight,normal-weight,overweight,and obese women was 0.37–0.56 kg/week,0.26–0.48 kg/week,0.19–0.32 kg/week,and 0.12–0.23 kg/week,respectively.What are the implications for public health practice?The findings may be used to inform prenatal counseling regarding optimal gestational weight gain for women with gestational diabetes mellitus,and suggest the need for weight gain management.Jinlang Lyu Yin Sun Yuelong Ji Nana Liu Suhan Zhang Hang Lin Yaxin Wang Xuanjin Yang Shuai Ma Na Han Yang Mi Dan Zheng Zhifen Yang Hongping Zhang Yan Jiang Liangkun Ma Haijun Wang 2023China CDC weekly2023,5,9:0
12Countermeasures for Development and Present Situation of Chives in Xiaogang Town, Xiaogan City, Hubei Province显示文摘Through the overview of main problems existing in chives production, its current situation and history, the thesis puts forward countermeasures for developing chives industrialization in Xiaogang Town, Xiaogan City.Yue CHEN Chunfu XIE Hongping LIU Huashu LIU Jian WANG Ming ZHENG Ju YUE Changbing LIU Dan LIU Hanhua TANG Yuchao PENG Yonggang NIU Ke HU 2013Asian Agricultural Research2013,5,5:0
13Effects of Different Feeding Patterns on the Growth of Micropterus salmoides显示文摘Three experimental groups with different feeding frequencies,different feeding rates and compensatory feeding were set up to study their effects on the growth of Micropterus salmoides.The results showed that different feeding rates of 2%,3%and 4%had no significant effects on the growth of M.salmoides.Therefore,before the individual weight of 50 g,the fish could be fed with a feeding rate of 4%,which could be gradually decreased to 2%in the later period.Under the condition of relatively fixed feeding rate,different feeding frequencies had an impact on the growth of M.salmoides.Under the conditions of suitable water temperature,it is reasonable to feed twice daily.The experimental fish fed for 5 d and then deprived of feed for 1 d showed fully compensatory growth,and there were no significant differences in weight gain rate,daily weight gain and specific growth rate compared with the continuous feeding group(P>0.05).Therefore,according to the feeding conditions of fish in the breeding process,stopping feeding for 1 d every 5 d could save feed and labor and improve breeding efficiency.Yuzhang HAN Zhourui WEN Aiwu YI Jun HUANG Zhiqiang ZHU Wenyu TONG Hongping ZHENG 2023Agricultural Biotechnology2023,12,2:0
14Research and Practice of Hybrid Teaching for Software Testing based on Interactive Learning显示文摘To address the problems of insufficient number of personalized exercises and cases and teachers’lack of grasp of students’weak knowledge points in the current software testing online courses,we study the strategy of establishing and updating intelligent exercise sets and case libraries and analyze the answers and dig out the weak points of knowledge through group intelligence reasoning and interactive machine learning methods.This will help teachers to make uniform and targeted explanations,reduce manual judgment,and achieve intelligent teaching quality reform,and implement the educational concepts of“keeping up with the times”and“teaching according to students’abilities”.Lipeng Gao Wei Zheng Hongping Gan Depeng Gao Xikang Feng 2021计算机教育2021,,12:0
15Weekly Weight Gain in Women with Gestational Diabetes Mellitus and Neonatal Birth Weight - China, 2011–2021显示文摘What is already known about this topic?Elevated gestational weight gain(GWG)during pregnancy among women diagnosed with gestational diabetes mellitus(GDM)is correlated with an increased instance of large for gestational age(LGA)and macrosomia.However,it remains uncertain whether managing weekly GWG following a GDM diagnosis positively impacts fetal birth weight.What is added by this report?Our study found that GWG following GDM diagnosis correlates positively with the risk of LGA and macrosomia among all body mass index(BMI)subgroups,especially for overweight and obese women.What are the implications for public health practice?The results of this research highlight the importance of enforcing a more stringent regulation on GWG on a weekly basis for overweight and obese women diagnosed with GDM,particularly when considering neonatal growth.Nana Liu Jinlang Lyu Haijun Wang Yin Sun Suhan Zhang Hang Lin Yaxin Wang Xuanjin Yang Shuai Ma Na Han Yang Mi Dan Zheng Zhifen Yang Hongping Zhang Yan Jiang Yuelong Ji Liangkun Ma 2023China CDC weekly2023,5,32:0
16From agricultural engineering and forestry engineering to biomechinfotronic engineering显示文摘The deterioration of global environment,decreasing of biological diversity,increasing of natural disasters,exhausting of biological resources and acceleration of desertification emphasize the need to provide the human-beings with the suitable environments.Nowadays,precision agriculture and precision forestry have been emphasized to obtain the maximum output with minimum input and the least impact on the environment,so agricultural and forestry engineering systems require multi-disciplinary design groups to deal with some common interests and the concept of biomechinfotronics is needed.The word“biomechinfotronic”is introduced to describe the multidisciplinary aspects of this complex system.In the paper,the prospects,mission analysis,education system,research areas of biomechinfotronics are studied.The particular characteristics of biomechinfotronics are the synergistic integration of biological engineering with mechatronics,bioinformatics,infotronics,bioelectronics and intelligent computer systems for conducting common research and development and for recruiting and training students with wide specialties.Zheng Jiaqiang Zhou Hongping Xu Youlin Xu Linyun 2009International Journal of Agricultural and Biological Engineering2009,2,1:0
17PHASE DIAGRAM OF TERNARY SYSTEM PrCl_2-CaCl_2-MgCl_2显示文摘Three surfaces corresponding to the primary crystallization of PrCl3,CaCl2 andMgCl2 respectively,3 univariant curves related to the secondary crystallization and a ternaryeutectic(44.8 wt-% PrCl3,31.8 wt-% CaCl2,546℃)were found in systemPrCl3-CaCl2-MgCl2 by means of DTA.A reaction occurs in this system:L=PrCl3+CaCl2+MgCl2.ZHENG Chaogui LIU Hongping YE Yupu(Y.P.Yeh) Peking University,Beijing,ChinaQIAO Zhiyu University of Science and Technology Beijing,Beijing,China ZHENG Chaogui Dept.of Chemistry,Peking University,Beijing 100871,China 1990Acta Metallurgica Sinica(English Letters)1990,3,10:0
18LIQUIDUS OF TERNARY SYSTEM LaCl_3-MgCl_2-LiCl显示文摘Two surfaces correponding to LaCl3 and α-solid solution(MgCl2.LiCl) respectively:and one secondary crystallization curve with a minimum M at 63.8 wt-% LaCl3,2.0 wt-%MgCl2,34.2 wt-% LiCl and 492℃ were fonud by means of DTA.In combination withliquidus determination.an approach was also made to the alteration in LnCl3-MgCl2-LiClsvstem,where Lu denotes La.Ce.Pr or Nd.ZHENG Chaogui LIU Hongping QIAO Zhiyu YE Yupu Peking University,Beijing.China 1992Acta Metallurgica Sinica(English Letters)1992,5,12:0
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