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32篇 您的检索式:作者名="Jiefan"
    题名 作者 年代 出处 被引量
1Significance of expression of heat shock protein90α in human gastric cancer显示文摘AIM: To evaluate the significance of hsp90α expression in human gastric cancer tissues.METHODS: Immunohistochemical staining was used in clinical specimens from 33 cases of gastric cancer and 33 cases of gastritis with rabbit anti-human hsp90α multi-clonal antibody in order to explore the relationship between the expression of hsp90α in gastric carcinoma tissue and gastritis tissue as well as in mucous membrane adjacent to cancer and lymph node metastasis.RESULTS: Hsp90α was detected in 88 % of gastric carcinoma cases and 55 % of gastritis cases. The hsp90α positive rate in gastric cancer group was significantly higher than that in gastritis group (P<0.01, P=0.005). The hsp90α positive rate in gastric cancer and in mucous membrane adjacent to cancer was 88 % and 55 % respectively (P<0.01,P=0.005). The hsp90α positive rate in lymph node metastasis group and non-lymph node metastasis group was 100 % and 60 %respectively, and a significant correlation between hsp90α expression and lymph node metastasis was shown (P<0.01,P=0.005).CONCLUSION: The hsp90α expression rate in gastric cancer group was significantly higher than that in gastritis group as well as that in the group of mucous membrane adjacent to cancer. The hsp90α expression in lymphatic node metastasis group was higher than that in non-lymphatic node metastasis group. The results indicate that increased hsp90α expression has a close relationship with occurrence and lymph node metastasis of gastric cancer.Dong-ShengZuo JieDai Ai-HuaBo JieFan Xiu-YingXiao 2003World Journal of Gastroenterology2003,9,11:14
2Microphysical Processes of a Stratiform Precipitation Event over Eastern China:Analysis Using Micro Rain Radar data显示文摘Data collected using the micro rain radar(MRR) situated in Jinan city, eastern China, were used to explore the altitudinal and temporal evolution of rainfall microphysical characteristics, and to analyze the bright band(BB) characteristics and hydrometeor classification. Specifically, a low-intensity and stable stratiform precipitation event that occurred from 0000 to0550 UTC 15 February 2015 and featured a BB was studied. During this event, the rainfall intensity was less than 2 mm h-1 at a height of 300 m, which was above the radar site level, so the errors caused by the vertical air motion could be ignored.The freezing height from the radiosonde matched well with the top of the BB observed by the MRR. It was also found that the number of 0.5–1 mm diameter drops showed no noticeable variation below the BB. The maximum fall velocity and the maximum gradient fall velocity(GFV) of the raindrops appeared at the bottom of the BB. Meanwhile, a method that uses the GFV and reflectivity to identify the altitude and the thickness of the BB was established, with which the MRR can provide a reliable and real-time estimation of the 0?C isotherm. The droplet fall velocity was used to classify the types of snow crystals above the BB. In the first 20 min of the selected precipitation event, graupel prevailed above the BB; and at an altitude of2000 m, graupel also dominated in the first 250 min. After 150 min, the existence of graupel and dendritic crystals with water droplets above the BB was inferred.Hong WANG Hengchi LEI Jiefan YANG 2017Advances in Atmospheric Sciences2017,34,12:11
3Occurrence of Aflatoxin B_(1),deoxynivalenol and zearalenone in feeds in China during 2018-2020显示文摘Background:The current study was conducted to investigate the individual and combined occurrence of aflatoxin B_(1)(AFB_(1)),deoxynivalenol(DON)and zearalenone(ZEN)in feeds from various Provinces of China during 2018 to 2020.A total of 3,507 feed samples,including 2,090 feed ingredients and 1,417 complete feed samples,were collected from different areas of China for mycotoxins analysis.Results:The individual contamination of AFB_(1),DON and ZEN were present in more than 81.9%,96.4% and 96.9% of feed samples,respectively,with average concentration ranges of AFB_(1) between 1.2-27.4μg/kg,DON between 458.0-1,925.4μg/kg and ZEN between 48.1-326.8μg/kg.Notably,0.9%,0.5% and 0.1% of feed ingredients,and 1.2-12.8%,0.9-2.9% and 0-8.9% of complete feeds for pigs,poultry and ruminants with AFB_(1),ZEN and DON that exceeded China’s safety standards,respectively.Moreover,more than 81.5%of feed ingredients and 95.7% of complete feeds were co-contaminated with various combinations of these mycotoxins.Conclusion:This study indicates that the feeds in China were universally contaminated with AFB_(1),DON and ZEN during the past 3 years.These findings highlight the significance of monitoring mycotoxin contaminant levels in the domestic animal feed,and the importance of carrying out feed administration and remediation strategies for mycotoxin control.Ling Zhao Lei Zhang Zijian Xu Xingda Liu Liyuan Chen Jiefan Dai Niel Alexander Karrow Lvhui Sun 2022Journal of Animal Science and Biotechnology2022,13,1:10
4Invited review:Remediation strategies for mycotoxin control in feed显示文摘Mycotoxins are secondary metabolites of different species of fungi.Aflatoxin B1(AFB1),deoxynivalenol(DON),zearalenone(ZEN)and fumonisin B1(FB1)are the main mycotoxins contaminating animal feedstuffs.These mycotoxins can primarily induce hepatotoxicity,immunotoxicity,neurotoxicity and nephrotoxicity,consequently cause adverse effects on the health and performance of animals.Therefore,physical,chemical,biological and nutritional regulation approaches have been developed as primary strategies for the decontamination and detoxification of these mycotoxins in the feed industry.Meanwhile,each of these techniques has its drawbacks,including inefficient,costly,or impractically applied on large scale.This review summarized the advantages and disadvantages of the different remediation strategies,as well as updates of the research progress of these strategies for AFB1,DON,ZEN and FB1 control in the feed industry.Meng Liu Ling Zhao Guoxin Gong Lei Zhang Lei Shi Jiefan Dai Yanming Han Yuanyuan Wu Mahmoud Mohamed Khalil Lvhui Sun 2022Journal of Animal Science and Biotechnology2022,13,4:8
5Aircraft Measurements of Cloud–Aerosol Interaction over East Inner Mongolia显示文摘To investigate the potential effects of aerosols on the microphysical properties of warm clouds, airborne observational data collected from 2009 to 2011 in Tongliao, Inner Mongolia, China, were statistically analyzed in this study. The results demonstrated that the vertical distribution of the aerosol number concentration(N_a) was similar to that of the clean rural continent. The average aerosol effective diameter(D_e) was maintained at approximately 0.4 μm at all levels. The data obtained during cloud penetrations showed that there was a progressive increase in the cloud droplet concentration(N_c) and liquid water content(LWC) from outside to inside the clouds, while the Nawas negatively related to the Ncand LWC at the same height. The fluctuation of the N_a, Ncand LWC during cloud penetration was more obvious under polluted conditions(Type 1) than under clean conditions(Type 2). Moreover, the wet scavenging of cloud droplets had a significant impact on the accumulation mode of aerosols, especially on particles with diameters less than 0.4 μm. The minimum wet scavenging coefficient within the cloud was close to 0.02 under Type 1 conditions, while it increased to 0.1 under Type 2 conditions,which proved that the cloud wet scavenging effect under Type 1 conditions was stronger than that under Type 2 conditions.Additionally, cloud droplet spectra under Type 1 conditions were narrower, and their horizontal distributions were more homogeneous than those under Type 2 conditions.Yuhuan Lü Hengchi LEI Jiefan YANG 2017Advances in Atmospheric Sciences2017,34,8:4
6Airborne Observations of Cloud Condensation Nuclei Spectra and Aerosols over East Inner Mongolia显示文摘A set of vertical profiles of aerosol number concentrations, size distributions and cloud condensation nuclei(CCN)spectra was observed using a passive cloud and aerosol spectrometer(PCASP) and cloud condensation nuclei counter, over the Tongliao area, East Inner Mongolia, China. The results showed that the average aerosol number concentration in this region was much lower than that in heavily polluted areas. Monthly average aerosol number concentrations within the boundary layer reached a maximum in May and a minimum in September, and the variations in CCN number concentrations at different supersaturations showed the same trend. The parameters c and k of the empirical function N = c S^kwere 539 and1.477 under clean conditions, and their counterparts under polluted conditions were 1615 and 1.42. Measurements from the airborne probe mounted on a Yun-12(Y12) aircraft, together with Hybrid Single-Particle Lagrangian Integrated Trajectory model backward trajectories indicated that the air mass from the south of Tongliao contained a high concentration of aerosol particles(1000–2500 cm^(-3)) in the middle and lower parts of the troposphere. Moreover, detailed intercomparison of data obtained on two days in 2010 indicated that the activation efficiency in terms of the ratio of NCCNto N_a(aerosols measured from PCASP) was 0.74(0.4 supersaturations) when the air mass mainly came from south of Tongliao, and this value increased to 0.83 on the relatively cleaner day. Thus, long-range transport of anthropogenic pollutants from heavily polluted mega cities,such as Beijing and Tianjin, may result in slightly decreasing activation efficiencies.Jiefan YANG Hengchi LEI Yuhuan Lü 2017Advances in Atmospheric Sciences2017,34,8:3
7Involvement of MyoD and PEA3 in regulation of transcription activity of MDR1 gene显示文摘在癌症的 multidrug 抵抗 1 的 Overexpression (MDR1 ) 为化疗的失败仍然是主要原因之一。在现在的学习,我们发现 MyoD 和 PEA3 能激活 P-glycoprotein (P-gp ) 在 SGC7901 房间的表示。MyoD 和 PEA3 击倒稀释了 MDR1 表示并且增加了 multidrug 的敏感抵抗癌症房间到被 P-gp 在 SGC7901/VCR 房间搬运的细胞毒素的药。MyoD 或 PEA3 能在 MDR1 倡导者上绑在电子盒子和 PEA3 地点并且激活它的抄写。由 MyoD 和 PEA3 的 MDR1 表示的规定可以提供潜在的方法在癌症治疗克服 MDR。Yaxin Zhao Jiefan Liu Qi Hong Chen Yang Li Chen Ying Chen Qiaoqiao Wang Kuaile Zhao Wei Jin 2010Acta Biochimica et Biophysica Sinica2010,42,12:3
8Observational Evidence of High Ice Concentration in a Shallow Convective Cloud Embedded in Stratiform Cloud over North China显示文摘In this study we observed the microphysical properties, including the vertical and horizontal distributions of ice particles,liquid water content and ice habit, in different regions of a slightly supercooled stratiform cloud. Using aircraft instrument and radar data, the cloud top temperature was recorded as higher than -15℃, behind a cold front, on 9 September 2015 in North China. During the flight sampling, the high ice number concentration area was located in the supercooled part of a shallow convective cloud embedded in a stratiform cloud, where the ambient temperature was around -3℃. In this area,the maximum number concentrations of particles with diameter greater than 100 μm and 500 μm(N_(100) and N_(500)) exceeded 300 L^(-1) and 30 L^(-1), respectively, and were related to large supercooled water droplets with diameter greater than 24 μm derived from cloud–aerosol spectrometer probe measurements. The ice particles types in this region were predominantly columnar, needle, graupel, and some freezing drops, suggesting that the occurrence of high ice number concentrations was likely related to the Hallett–Mossop mechanism, although many other ice multiplication processes cannot be totally ruled out.The maximum ice number concentration obtained during the first penetration was around two to three orders of magnitude larger than that predicted by the Demott and Fletcher schemes when assuming the cloud top temperature was around-15℃.During the second penetration conducted within the stratiform cloud, N_(100) and N_(500) decreased by a factor of five to ten, and the presence of columnar and needle-like crystals became very rare.Jiefan YANG Hengchi LEI Tuanjie HOU 2017Advances in Atmospheric Sciences2017,34,4:3
9Simulations of Microphysics and Precipitation in a Stratiform Cloud Case over Northern China:Comparison of Two Microphysics Schemes显示文摘Using the Weather Research and Forecasting(WRF)model with two different microphysics schemes,the Predicted Particle Properties(P3)and the Morrison double-moment parameterizations,we simulated a stratiform rainfall event on 20–21 April 2010.The simulation output was compared with precipitation and aircraft observations.The aircraft-observed moderate-rimed dendrites and plates indicated that riming contributed significantly to ice particle growth at the mature precipitation stage.Observations of dendrite aggregation and capped columns suggested that aggregation coexisted with deposition or riming and played an important role in producing many large particles.The domain-averaged values of the 24-h surface precipitation accumulation from the two schemes were quite close to each other.However,differences existed in the temporal and spatial evolutions of the precipitation distribution.An analysis of the surface precipitation temporal evolution indicated faster precipitation in Morrison,while P3 indicated slower rainfall by shifting the precipitation pattern eastward toward what was observed.The differences in precipitation values between the two schemes were related to the cloud water content distribution and fall speeds of rimed particles.P3 simulated the stratiform precipitation event better as it captured the gradual transition in the mass-weighted fall speeds and densities from unrimed to rimed particles.Tuanjie HOU Hengchi LEI Zhaoxia HU Jiefan YANG Xingyu LI 2020Advances in Atmospheric Sciences2020,37,1:3
10Aircraft Measurements of the Microphysical Properties of Stratiform Clouds with Embedded Convection显示文摘The presence of embedded convection in stratiform clouds strongly affects ice microphysical properties and precipitation formation.In situ aircraft measurements,including upward and downward spirals and horizontal penetrations,were performed within both embedded convective cells and stratiform regions of a mixedphase stratiform cloud system on 22 May 2017.Supercooled liquid water measurements,particle size distributions,and particle habits in different cloud regions were discussed with the intent of characterizing the riming process and determining how particle size distributions vary from convective to stratiform regions.Significant amounts of supercooled liquid water,with maxima up to 0.6 g m−3,were observed between−3℃ and−6℃ in the embedded convective cells while the peak liquid water content was generally less than 0.1 g m−3 in the stratiform regions.There are two distinct differences in particle size distributions between convective and stratiform regions.One difference is the significant shift toward larger particles from upper−15℃ to lower−10℃ in the convective region,with the maximum particle dimensions increasing from less than 6000μm to over 1 cm.The particles larger than 1 cm at−10℃ are composed of dendrites and their aggregates.The other difference is the large concentrations of small particles(25–205μm)at temperatures between−3℃ and−5℃ in the convective region,where rimed ice particles and needles coexist.Needle regions are observed from three of the five spirals,but only the cloud conditions within the convective region fit into the Hallett-Mossop criteria.Tuanjie HOU Hengchi LEI Youjiang HE Jiefan YANG Zhen ZHAO Zhaoxia HU 2021Advances in Atmospheric Sciences2021,38,6:3
11Focusing on the major function‐oriented zone: A new spatial planning approach and practice in China and its 12th Five‐Year Plan 关注主体功能区——中国“十二五规划”新的空间规划探索与实践显示文摘JieFan 樊杰 WeiSun 孙威 ZhenshanYang 杨振山 PengFan 凡芃 DongChen 陈东 2012Asia Pacific Viewpoint2012,,1:1
12显示文摘 Senna Mamoru 1995Material Research Bulletin1995,30,4:1
13Crystallization of titania and magnesium titanate from mechanically activated Mg (OH)2 and TiO2 gel mixture显示文摘Liao Jiefan Mamoru Senna 1995Materials Reserarch Bulletin1995,30,4:1
14Development of subcracks around compound fractures in rock specimen, special issue of pure and applied geophysics显示文摘Zhao Yonghong Liang Haihua Huang Jiefan Geng Jinda Wang Ren 1995Mechanics Problems inGeodynamics1995,145,34:1
15Synchronous control of multi motor based on PSD algorithm PID 显示文摘Cui Jiefan Liu Yan Li Yue 2013Machine tool and hydraulic2013,,19:1
16Particle size spectra and possible mechanisms of high ice concentra- tion in nimbostratus over Hebei Province, China 显示文摘Yang Jiefan Lei Hengchi Hu Zhaoxia 2014Atmospheric Research2014,142,:1
17Mechanism and function of decreased FOXO1 in renal cell carcinoma显示文摘LibinZhou BingdeYin YongchaoLiu YanHong ChangcunZhang JieFan 2012J Surg Oncol2012,,8:1
18Enhanced Dehydration and Amorphization of Magnesium Hydroxide in the Presence of Ultrafine Silica under Mechanochemical Conditions显示文摘Liao Jiefan Senna Mamoru 1992Ther-mochimica Acta1992,210,:1
19Detection of frame duplication forgery in videos based on spatial and temporal analysis 显示文摘Lin Guoshiang Chang Jiefan 2012international Journal of Pattern Recognition and Artificial Intelligence2012,26,7:1
20Enhanced dehydration and amorphization of Mg (OH) 2 in the oresence of ultra fine SiO2 under mechno-chemical conditions 显示文摘Liao Jiefan Senna M 1992Thermochimica Acta1992,210,:1
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