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Search Results: 1 - 10 of 28181 matches for " MA Huijun "
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Will boreal winter precipitation over China increase in the future? An AGCM simulation under summer “ice-free Arctic” conditions
JieHua Ma,HuiJun Wang,Ying Zhang
Chinese Science Bulletin , 2012, DOI: 10.1007/s11434-011-4925-x
Abstract: Frequent winter snowstorms have recently caused large economic losses and attracted wide attention. These snowstorms have raised an important scientific question. Under scenarios of future global warming, will winter precipitation in China increase significantly and produce more snow in the north? Using Coupled Model Intercomparison Project phase 3 (CMIP 3) model projections under the Special Report on Emissions Scenario A1B scenario, we generated a possible future Arctic condition, the summer (September) “ice-free Arctic” condition. We then used corresponding monthly sea surface temperature (SST) values and a set of CO2 concentrations to drive an atmospheric general circulation model (AGCM), for simulating East Asian climate change. The experimental results show that during the boreal winter (December-January-February; DJF), global surface air temperature would increase significantly under this scenario, producing substantial warming in Arctic regions and at high latitudes in Asia and North America. The Siberian High, Aleutian Low and East Asian winter monsoon would all weaken. However, because of increased transport of water vapor to China from the north, winter precipitation would increase from south to north. In addition, the significant increase in winter temperature might cause fewer cold surges.
Investigation of gene expression profiles in coronary heart disease and functional analysis of target gene
HuiJun Yin,XiaoJuan Ma,YueRong Jiang,DaZhuo Shi,KeJi Chen
Chinese Science Bulletin , 2009, DOI: 10.1007/s11434-009-0118-2
Abstract: The research outlined here includes constitution of the differential gene expression profile by means of oligonucleotide gene microarray and functional analysis of the target gene for coronary heart disease (CHD). In a microarray screening experiment, the predominance of inflammation- and immune-related genes is presented in the expression profile of 107 differential genes based on the analysis of gene ontology and gene pathway. IL-8, an inflammatory factor, is identified as one of the genes that were markedly up-regulated in CHD. The plasma level of IL-8 is significantly raised in patients with CHD (n = 30) compared with healthy controls (n = 40), which underscores the clinical relevance of the in vitro finding. The further functional analysis shows that IL-8 affects platelet aggregation percentage, expression of CD62p and platelet aggregation morphology in 12 healthy volunteers to some extent. These findings suggest the relevance of inflammation and immune responses to CHD at the DNA level. Moreover, IL-8 may be involved in the pathogenesis of CHD through the pathway of platelet activation.
Long-Term Impact of Maternal Protein Malnutrition on Learning and Memory Abilities and DNA Methylating Profiles of the Nervous System in Offspring Rats  [PDF]
Hao Zhu, Yijing Ding, Weimin Zhu, Shuang Liang, Yanyan Qian, Yuanpeng Zhou, Duan Ma, Huijun Wang, Weidong Tian, Shufeng Zhou, Xiaotian Li
Health (Health) , 2014, DOI: 10.4236/health.2014.615239
Abstract: Objective: To determine the mechanisms by which protein deficiency during pregnancy can lead to long-term alterations in learning and memory abilities of the offspring in rats. Study design: Fourty-two pregnant rats were fed control (n = 23) or low protein (n = 19) diets ad libitum until parturition. On the 8th week of post-natal life which represented early adulthood, eighty-four offsprings (control group: n = 52, LP group: n = 32) were determined their learning & memory ability by using the Morris water maze test. Six offprings’ brain tissue (control group: n = 3, LP group: n = 3) was also analysed for DNA methylating profiles, the GO and KEGG pathways, methylation status and twelve for protein expression (control group: n = 6, LP group: n = 6). Results: The offsprings of the protein-deficient-diet fed rats learnt faster initially then lagged behind those of the control rats, especially in female rats (p = 0.035). There were a series of genes methylated in the CpG island and pormoter area. Quantitative Mass Array data showed methylation differences in Grin2b and Grin2b_3CpG 3, 4, & 5 might be the target sites as shown by dual-luciferase assay. A decreased level of protein expression of NMDAR2B was observed. Conclusion: Differential methylation status in Grin2b and changes in expression of NMDAR2B may partially explain the long-term impact of maternal protein deficiency on the cognitive and learning capabilities of offsprings.
Doubly Periodic Riemann Boundary Value Problem of Non-Normal Type for Analytic Functions on Two Parallel Curves  [PDF]
Lixia Cao, Huijun Zheng
Advances in Pure Mathematics (APM) , 2015, DOI: 10.4236/apm.2015.51006
Abstract: In this paper, we present and study a kind of Riemann boundary value problem of non-normal type for analytic functions on two parallel curves. Making use of the method of complex functions, we give the method for solving this kind of doubly periodic Riemann boundary value problem of non-normal type and obtain the explicit expressions of solutions and the solvable conditions for it.
Research on Skill Testing Standard of Marketing Major of Wuhan City Vocational College  [PDF]
Hui Li, Huijun Chen
Creative Education (CE) , 2017, DOI: 10.4236/ce.2017.82017
Abstract:
Higher vocational education scale expands rapidly in the recent years, followed by the contradiction between expansion scale and education quality, which has become increasingly prominent nowadays. In order to improve the teaching quality, the most important is to improve daily teaching activity of the harmonious combination of teaching quality monitoring and evaluation system, which focuses on the teaching quality in higher vocational colleges through monitoring and the objective requirement of the long-term quality assurance mechanism. Based on investigation and analysis of present situation, analysis of professional practice skill testing of students majoring in marketing of Wuhan City Vocational College, we develop skill-testing standard in the hope of improving students’ marketing professional skills in future.
The Application of PLC in Sewage Treatment  [PDF]
Huijun Zhu, Xinglei Qiu
Journal of Water Resource and Protection (JWARP) , 2017, DOI: 10.4236/jwarp.2017.97056
Abstract: The environmental protection has become one of the factors that affect and restrict the development of human society. With the continuous development of industry and the rapid increase of urban population, a large number of industrial and domestic sewage discharges into rivers and lakes without treatment, so that the environment and the application of water are seriously polluted. In this paper, the principle and characteristics of PLC(PLC is the abbreviation of Programmable Logic Controller)are introduced; the process of PLC sewage treatment is expounded, and the application of PLC in sewage treatment is described.
Pronominal Anaphor Resolution and the Underlying Cognitive Mechanism  [PDF]
Huijun Tang, Wei Li
Open Journal of Modern Linguistics (OJML) , 2018, DOI: 10.4236/ojml.2018.82002
Abstract: When people tend to refer to a previous mentioned discourse entity, they can use various types of anaphoric expressions, such as pronouns, definite noun phrases, proper names or expressions that are introduced by a lexical modifier or a comparative adjective. Among the different types of anaphoric expressions, pronoun is most common and frequently used which contains only a little information about the referent, while definite expressions contain much richer semantic information. As pronouns contain very little information on their own, they are always ambiguous. The cognitive mechanism that underlies the comprehension of pronouns, especially the ones with ambiguities, catches the interests of many researchers. Various tasks have been used to investigate this issue and the results did not go for the same direction. A combination of multiple research methods is needed for a better and deeper understanding of anaphora.
Recent Researches on the Short-Term Climate Prediction at IAP-A Brief Review
Wang Huijun,Zhou Guangqing,Lin Zhaohui,Zhao Yan,Guo Yufu,Ma Zhuguo,
Wang Huijun
,Zhou Guangqing,Lin Zhaohui,Zhao Yan,Guo Yufu,Ma Zhuguo

大气科学进展 , 2001,
Abstract: Studies on the seasonal to extraseasonal climate prediction at the Institute of Atmospheric Physics (IAP) in recent years were reviewed. The first short-term climate prediction experiment was carried out based on the atmospheric general circulation model (AGCM) coupled to a tropical Pacific oceanic general circulation model (OGCM) In 1997, an ENSO prediction system including an oceanic initialization scheme was set up. At the same time, researches on the SST-induced climate predictability over East Asia were made. Based on the blennial signal in the interannual climate variability, an effective method was proposed for correcting the model predicted results recently In order to consider the impacts of the initial soil mois- ture anomalies, an empirical scheme was designed to compute the soil moisture by use of the atmospheric quantities like temperature, precipitation, and so on. Sets of prediction experiments were carried out to study the impacts of SST and the initial atmospheric conditinns on the flood occurring over China in 1998.
Diurnal and Seasonal Patterns of Methane Emissions from a Dairy Operation in North China Plain
Zhiling Gao,Huijun Yuan,Wenqi Ma,Jianguo Li,Xuejun Liu,Raymond L. Desjardins
Advances in Meteorology , 2011, DOI: 10.1155/2011/190234
Abstract: In China, dairy cattle managed in collective feedlots contribute about 30% of the milk production and are believed to be an important contributor to national methane emissions. Methane emissions from a collective dairy feedlot in North China Plain (NCP) were measured during the winter, spring, summer, and fall seasons with open-path lasers in combination with an inverse dispersion technique. Methane emissions from the selected dairy feedlot were characterized by an apparent diurnal pattern with three peaks corresponding to the schedule of feeding activities. On a per capita basis, daily methane emission rates of these four seasons were 0.28, 0.32, 0.33, and 0.30 kg head−1 d−1, respectively. In summary, annual methane emission rate was 112.4 kg head−1 yr−1 associated with methane emission intensity of 32.65 L CH4 L−1 of milk and potential methane conversion factor Ym of 6.66% of gross energy intake for mature dairy cows in North China Plain.
Development and identification of wheat-Ag.pulcherrimum addition line and substitution line with BYDV resistance
Dongliang Wu,Zhiyong Xin,Xiao Chen,Huijun Xu,Youzhi Ma,Zengyan Zhang
Science China Life Sciences , 1999, DOI: 10.1007/BF02880054
Abstract: Breeding materials derived from CPI113500, amphidiploid ofT. turgidum × Ag.pulcherrimum with barley yellow dwarf virus (BYDV) resistance, were evaluated by using BYDV resistance test, morphology observation, cytogenetics analysis, aneuploid analysis, isozyme electrophoresis,in situ hybridization. Two new germplasms resistant to BYDV were obtained. They were T.aestivum-Ag. pulcherrimum disomic addition line 96S16-11, andT. aestivum-Ag. pulcherrimum disomic substitution line 96W14-9.
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