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Liquid-Gas Transition in the Ionic System

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Chinese Physics Letters 1996年第7期13卷 500-503页

作者： ding Guo-hui XU Bo-wei Department of Physics Shanghai Jiaotong UniversityShanghai 200030

The phase transition in the ionic system in dimension d=3 is studied in the formulation of quantum sine-Gordon field *** a variational method the phase diagram is investigated,and the critical point terminating the co... 详细信息

关键词： theory conducting Transition

Silver nanoparticles on UiO-66(Zr)metal-organic frameworks for water disinfection application

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Food Science and Human Wellness 2022年第2期11卷 269-276页

作者： hui Chen Chen Qiu Yiran jiang Xinyu Liao Dan Wu Mofei Shen Tian ding College of Biosystems Engineering and Food Science Zhejiang UniversityHangzhou 310058China

Drinking water disinfection is an essential process to assure public health all over the *** this study,silver nanoparticles(AgNPs)on UiO-66(Zr)Metal-Organic Frameworks(Ag@UiO-66)is proposed as a potential water disinfection *** are synthesized using polyvinyl pyrrolidone(PVP)as stabilizing agent,and sodium borohydride as reducing agent are subsequently embedded on UiO-66,a high-stability organometallic *** effect of premixing time,reaction time and reactant concentration on the loading rate of AgNPs on UiO-66 was *** maximum load rate of AgNPs on UiO-66 could reach 13%when the premixing time is 3 h,the reaction time is 45 min and the concentration of AgNO_(3) is10μg/*** formation of AgNPs loaded on UiO-66 was observed and confirmed with ultraviolet and visible spectrophotometry(UV-Vis),scanning electron microscopy(SEM),infrared emission spectroscopy(IES)and X-ray diffraction(XRD)***@UiO-66 exhibited strong antibacterial activity against both Gramnegative Escherichia coli and Gram-positive Staphylococcus aureus,with minimum inhibitory concentrations(MIC)of 64 and 128μg/mL,*** germicidal efficacy of Ag@UiO-66 enhanced significantly as the temperature rose from 4℃to 37℃.The results indicate that Ag@UiO-66 is potential candidate as a feasible water disinfection material.

关键词： Metal-organic framework Silver nanoparticles Antibacterial effects Water disinfection

Outage Probability and Achievable Rate Analysis for Massive MIMO Downlink with Mixed-DAC and MF Precoding

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China Communications 2020年第8期17卷 95-105页

作者： Qingfeng ding hui Shi Yichong Lian School of Electrical and Automation Engineering East China Jiaotong UniversityNanchang 330013China

This paper analyses of the outage probability and the achievable rate of massive multi-input-multi-output(MIMO) systems, in which the base station(BS) is equipped with digital-to-analog-converters(DACs) of mixed-level resolution. And the matched-filter(MF) precoding is used on the BS. Closedform expressions are derived by the distribution of user-interference power and other statistical properties in the signal-to-interference-plus-noise-ratio. Then, the combination of mixed-DACs resolution profile is chosen about outage probability and achievable rate with the BS energy consumption. And the resolution configurations between the outage probability and the achievable rate and the BS energy consumption are given. Meanwhile, Effects of related parameters and channel errors are analysed about outage probability and achievable rate. The numerical results show that the correctness of the formula derivations. As the number of users increases the system's achievable rate increases and the outage probability decreases. The selected resolution configuration system has better comprehensive performance.

关键词： Massive MIMO mixed-DACs matched-filter precoding mixed-resolution choose outage probability and achievable rate

A review of isolation methods, structure features and bioactivities of polysaccharides from Dendrobium species

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Chinese Journal of Natural Medicines 2020年第1期18卷 1-27页

作者： YUE Han ZENG hui ding Kan Glycochemistry and Glycobiology Lab Key Laboratoty of Receptor ResearchShanghai Institute of Materia MedicaChinese Academy of SciencesShanghai 201203China University of Chinese Academy of Sciences Beijing 100049China

Dendrobium,orchid,is a traditional Chinese herb medicine applied extensively as tonic and precious food for thousands of years recorded in ancient Chinese medical book"Shen Nong’s Materia Medica".It’s well known that bioactivities are usually related to the ingredients’*** on the previous research,Dendrobium species contain amino acid,sesquiterpenoids,alkaloids and *** the bioactive substances,carbohydrate shows extensive activities in antitumor,antiglycation,immune-enhancing,antivirus,antioxidant,antitumor and ***,as the main biologically active substance,the exact structures and latent activities of polysaccharides from Dendrobium species are widely focused *** this review,we focus on the advancements of extraction methods and diversity of structures and bioactivities of polysaccharides obtained from Dendrobium species.

关键词： Dendrobium Polysaccharides Bioactivities Structures

Abrupt Flood–Drought Alternation in Southern China during Summer 2019

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Journal of Meteorological Research 2021年第6期35卷 998-1011页

作者： Yuan YUAN hui GAO Ting ding National Climate Center China Meteorological AdministrationBeijing 100081

We investigated the abrupt alternation from flood to drought in southern China during summer 2019 using multiple *** anomalies of precipitation occurred in southern China in the summer of 2019 and the daily precipitation in the south of the middle and lower reaches of the Yangtze River valley showed an abrupt change from flood to drought conditions around *** highest precipitation in 39 yr was recorded between 1 June and 14 July *** circulation systems affecting this high precipitation included a persistent deepened East Asian trough,the southward location of the western Pacific subtropical high,an intensified East Asian subtropical jet,an anomalous low-level cyclone from southern Japan to southern China,and extremely strong positive vorticity over the jiangnan *** different atmospheric circulation anomalies from 15 July to 31 August caused continuously high temperatures,below-normal precipitation,and severe drought in jiangnan *** investigations showed that the sudden change in atmospheric circulation around mid-July started in the mid and lower troposphere and was influenced by the northward track of Tropical Cyclone Danas in the northwestern Pacific.

关键词： abrupt changes summer precipitation East Asian trough western Pacific subtropical high tropical cyclone

An unprecedented high temperature event in southern China in autumn 2021 and the essential role of the mid-latitude trough

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Advances in Climate Change Research 2022年第6期13卷 772-777页

作者： Ting ding Xiang LI hui GAO Climate Studies Key Laboratory National Climate CenterChina Meteorological AdministrationBeijing 100081China

Studies about high temperatures in China rarely touched the period beyond *** in September-early October 2021,a record-breaking high temperature event occurred in southern China,and affected agriculture in many *** the daily maximum temperature and the number of high temperature days were the highest in September since *** better understand the different features and possible causes of the extreme event in autumn from those in summer,the analysis of atmospheric circulation patterns was *** western Pacific subtropical high(WPSH)was quite stronger and extended much more westward in most of the days in September 2021 than its climatology,which directly caused this unprecedented autumn high temperature ***,the mid-latitude trough over the east of Japan may also play an essential role in this high temperature *** to the southward extension of the trough,a cyclonic circulation anomaly appeared at 850 hPa,and its northerly wind component prevailed in the west of the trough and blocked the eastward retreat of the *** a result,southern China was stably controlled by the WPSH,which led to the persistence of this high temperature *** conclusion is further confirmed by the statistical results from the analysis of the multi-year data and analogue *** to the previous studies,this study reveals the essential role of the mid-latitude trough and highlights the joint impacts of the WPSH and the trough in causing the unprecedented autumn high temperature event.

关键词： Extreme high temperature Western Pacific subtropical high Mid-latitude trough Southern China

Expression of cell cycle regulator p57^(kip2), cyclinE protein and proliferating cell nuclear antigen in human pancreatic cancer: An immunohistochemical study

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World Journal of Gastroenterology 2005年第32期11卷 5057-5060页

作者： hui Yue hui-Yong jiang Institute for Digestive Medicine Nanfang Hospital Southern Medical University Guangzhou 510515 Guangdong Province China Department of Pathology Nanfang Hospital Southern Medical University Guangzhou 510515 Guangdong Province China

AIM： To investigate the effects of p57^kip2, cyclinE protein and proliferating cell nuclear antigen （PCNA） on occurrence and progression of human pancreatic cancer. METHODS： The expression of p57^kip2, cyclinE protein and PCNA in tumor tissues and adjacent tissues from 32 patients with pancreatic cancer was detected by SP immunohistochemical technique. RESULTS： The positive expression rate of p57^kip2 protein in tumor tissues was 46.9%, which was lower than that in adjacent pancreatic tissues （χ^2 = 5.317, P〈0.05）. p57^kip2 protein positive expression remarkably correlated with tumor cell differentiation （P〈0.05）, but not with lymph node metastasis （P〉0.05）. The positive expression rate of cyclinE protein in tumor tissues was 68.8%, which was higher than that in adjacent pancreatic tissues （χ^2 = 4.063, P〈0.05）. CyclinE protein positive expression significantly correlated with tumor cell differentiation and lymph node metastasis （P〈0.05）. The positive expression rate of PCNA in the tumor tissues was 71.9%, which was higher than that in adjacent pancreatic tissues （χ^2 = 5.189, P〈0.05）. PCNA positive expression remarkably correlated with tumor cell differentiation and lymph node metastasis （P〈0.05）. CONCLUSION： The decreased expression of p57^kip2 and/or overexpression of cyclinE protein and PCNA may contribute to the occurrence and progression of pancreatic cancer. p57^kip2, cyclinE protein, and PCNA play an important role in occurrence and progression of pancreatic cancer.

关键词： p57^kip2 CyclinE PCNA Human pancreatic cancer

ANALYSIS ON AGRICULTRUAL INFORMATION DEMAND——Case of Jilin Province

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Chinese Geographical Science 2005年第3期15卷 281-287页

作者： ZHANG hui-min jiang hui-ming Northeast Institute of Geography and Agricultural Ecology Chinese Academy of Sciences Changchun 130012 P. R. China Managerial College Jilin Agricultural University Changchun 130118 P. R. China

With the rapid development of agricultural informalization in the world, the demand of agricultural information has been a focus in the international agriculture and information fields. Based on the investigation, this paper presented the four characteristics of the demand of agricultural information in China, includingregionality, seasonality, great potential demand and variation in kind and level. The factors infuencing the demand of agricultural information were analyzed by the Optimized Less Square （OLS） method. The result shows that, of all factors influcing agricultural information demand, the most important one is economy, the second is facility of information pass, and knowledge and education of user, credit of agricultural information service system and production situation follow. Taking Jilin Province as an example, this article also elaborated the agricultural information demand status, and deduced the regression model of agricultural information demand and verified it by the survey in rural Jilin.

关键词： agricultural information demand agricultural information service system Jilin Province

Patterns and causes of geographic variation in bat echolocation pulses

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Integrative Zoology 2015年第3期10卷 241-256页

作者： Tinglei jiang hui WU jiang FENG Jilin Key Laboratory of Animal Resource Conservation and Utilization Northeast Normal UniversityChangchunChina Key Laboratory for Wetland Ecology and Vegetation Restoration of National Environmental Protection Northeast Normal UniversityChangchunChina

Evolutionary biologists have a long-standing interest in how acoustic signals in animals vary geographically,because divergent ecology and sensory perception play an important role in *** comparisons are valuable in determining the factors that influence divergence of acoustic *** are social mammals and they depend mainly on echolocation pulses to locate prey,to navigate and to *** evidence shows that geographic variation of bat echolocation pulses is common,with a mean 5-10 kHz differences in peak frequency,and a high level of individual variation may be nested in this geographical ***,understanding the geographic variation of echolocation pulses in bats is very difficult,because of differences in sample and statistical analysis techniques as well as the variety of factors shaping the vocal geographic *** differences in echolocation pulses of bats generally lack latitudinal,longitudinal and elevational patterns,and little is known about vocal *** is accumulating to support the fact that geographic variation in echolocation pulses of bats may be caused by genetic drift,cultural drift,ecological selection,sexual selection and social *** studies could relate geographic differences in echolocation pulses to social adaptation,vocal learning strategies and patterns of *** addition,new statistical techniques and acoustic playback experiments may help to illustrate the causes and consequences of the geographic evolution of echolocation pulse in bats.

关键词： Chiroptera drift echolocation geographic evolution selection