|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 分子煤化学与煤衍生物的定向转化显示文摘从煤中获取“特异化学品”是煤炭非燃料利用的重要途径 .对煤大分子进行“剪裁”,获取“特异化学品”和对这些“特异化学品”进行“缝制”是分子煤化学的两个重要内容 .总结了煤衍生物的种类及它们可以获取的高附加值产品 ,分析了煤衍生物定向转化的合理途径 ,指出了煤衍生物定向转化中存在的问题 。 | 袁新华 熊玉春 宗志敏 秦志宏 魏贤勇 Wei Xianyong | 2001 | 煤炭转化2001，24，1： | 19 |
| 2 | Effects of different forms of yeast Saccharomyces cerevisiae on growth performance,intestinal development,and systemic immunity in early-weaned piglets显示文摘The present study was conducted to determine effects of different forms of yeast(Saccharomyces cerevisiae,strain Y200007) on the growth performance,intestinal development,and systemic immunity in early-weaned piglets.A total of 96 piglets(14-d old,initial average body weight of 4.5 kg) were assigned to 4 dietary treatments:(1) basal diet without yeast(Control);(2) basal diet supplemented with 3.00 g/kg live yeast(LY);(3) basal diet supplemented with 2.66 g/kg heat-killed whole yeast(HKY);and(4) basal diet supplemented with 3.00 g/kg superfine yeast powders(SFY).Diets and water were provided ad libitum to the piglets during 3-week experiment.Growth performance of piglets was measured weekly.Samples of blood and small intestine were collected at days 7 and 21 of experiment.Dietary supplementation with LY and SFY improved G:F of piglets at days 1-21 of the experiment(P<0.05) compared to Control group.Serum concentrations of growth hormone(GH),triiodothyronine(T_3),tetraiodothyronine(T_4),and insulin growth factor 1(IGF-1) in piglets at day 21 of the experiment were higher when fed diets supplemented with LY and SFY than those in Control group(P < 0.05).Compared to Control group,contents of serum urea nitrogen of piglets were reduced by the 3 yeast-supplemented diets(P< 0.05).Diets supplemented with LY increased villus height and villus-to-crypt ratio in duodenum and jejunum of piglets(P < 0.05) compared to other two groups at day 7 of the experiment.Feeding diets supplemented with LY and SFY increased(P< 0.05) serum concentrations of IgA,IL-2,and IL-6 levels in piglets compared to Control.The CD4^+/CD8^+ ratio and proliferation of T-lymphocytes in piglets fed diets supplemented with LY were increased compared to that of Control group at day 7 of the experiment(P < 0.05).In conclusion,dietary supplementation with both LY and SFY enhanced feed conversion,small intestinal development,and systemic immunity in early-weaned piglets,with better improvement in feed conversion by dietary supplementation with LY,while dietary supplementation with SFY was more effective in increasing systemic immune functions in early-weaned piglets. | Zongyong Jiang Shaoyong Wei Zhilin Wang Cui Zhu Shenglan Hu Chuntian Zheng Zhuang Chen Youjun Hu Li Wang Xianyong Ma Xuefen Yang | 2016 | Journal of Animal Science and Biotechnology2016，7，1： | 13 |
| 3 | New progress in the processing and efficient utilization of coal显示文摘Coal accounts for about 70% of the primary energy sources in China.The environmental pollution and resources waste involved with coal processing and utilization are serious.It is therefore urgent to develop highly-efficient coal resources utilization theory and methods with low-carbon discharge.Based on our long-term basic research and technology development,the progress in beneficiation,cleaning,and transformation of coal,which includes dense phase fluidized bed dry beneficiation,deep screening of wet fine coal,micro-bubble fiotation column separation,molecular coal chemistry,and transformation and separation of coal and its derivatives into value-added chemicals under mild conditions,is discussed. | Zhao Yuemin Liu Jiongtian wei xianyong Luo Zhenfu Chen Qingru Song Shulei | 2011 | Mining Science and Technology2011，21，4： | 9 |
| 4 | Dietary supplementation with a high dose of daidzein enhances the antioxidant capacity in swine muscle but experts pro-oxidant function in liver and fat tissues显示文摘Background: Although isoflavones are natural dietary antioxidants, they may have toxicological effects. This study aimed to evaluate the redox system in tissues of finishing pigs by supplementation with high dose of daidzein(640 mg/kg).Results: The supplementation of high dose of daidzein for 64 d increased the activity of superoxide dismutase and total antioxidant capacity in longissimus muscle but down-regulated the expression of reactive oxygen species(ROS)-producing enzyme NADPH oxidase-2 and cyclooxygenase-2. In contrast, high-level supplementation with daidzein exerted pro-oxidant changes in back fat, abdominal fat, liver, and plasma, as reflected by increased contents of malondialdehyde, a lipid peroxidation product, in these tissues. Furthermore, daidzein supplementation resulted in higher expression of ROS-producing enzymes, including NADPH oxidase-1 and cyclooxygenase-1in liver, 5-lipoxygenase(5-LOX) in backfat and NADPH oxidase-2 both in abdominal fat and backfat. The supplementation of daidzein did not affect meat quality parameters in longissimus muscle, including marbling score,eye muscle areas, intramuscular fat, shear force, drip loss, p H and meat color.Conclusions: This experiment suggests that dietary supplementation of finishing pigs with daidzein at a high dose level improves redox status in muscle but exerts pro-oxidant effect in liver and fat tissues. | Wei Chen Xianyong Ma Yingcai Lin Yunxia Xiong Chuntian Zheng Youjun Hu Deqian Yu Zongyong Jiang | 2016 | Journal of Animal Science and Biotechnology2016，7，3： | 8 |
| 5 | Improving the quality of pollen-climate calibration-sets is the primary step for ensuring reliable climate reconstructions显示文摘Pollen-based climate reconstructions have been widely applied in China [1,2]as an essential way to investigate quantitatively past climate change,which is necessary to improve the reliability of future climate predictions [3].However,their usefulness is often doubted,particularly for those regions with a long history of civilization (e.g.East China),where both the modern and past vegetation are heavily disturbed by human activities [4-6].Which factors influence the integrity of pollen-based climate reconstructions and how to improve their reliability are rigorous challenges for palynologists.Previous work focusing on these two questions has used modern pollen data from China or eastern continental Asia and mainly concludes that past climate reconstruction is quite sensitive to the clualitv of the calibration-set [2,7]. | Xianyong Cao Fang Tian Wei Ding | 2018 | Science Bulletin2018，63，20： | 6 |
| 6 | Surface pollen assemblages as indicators of human impact in the warm temperate hilly areas of eastern China显示文摘Investigation of 78 surface pollen samples from warm temperate hilly areas of eastern China shows that pollen assemblages in areas of different land use are significantly different.Pollen concentrations in wastelands are higher than in plantations;these,in turn,are higher than in farmlands;implying that pollen concentration decreases with increasing human impact.Arboreal pollen dominated by Pinus and Quercus is common in all samples.Herbaceous pollen percentages are higher while shrub pollen,fern spores and fern allies are lower in farmlands than in wastelands.Crop pollen is only detectable in and near farmlands;its percentages and concentrations decrease in wastelands.Cereal and Cruciferae pollen percentages average 16.7% and 6.7% in farmland respectively,but Cereal reduces to less than 3% and Cruciferae to less than 0.5% in nearby wastelands.Principle coordinates analysis and clustering analysis indicate that pollen assemblages from farmlands are distinguishable from those under other vegetation types.Occurrence of Poaceae,Chenopodiaceae,Artemisia,and Compositae pollen and Selaginella sinensis spores are closely related to human activities,and their types and frequencies indicate intensity of human impact.The spatial distribution of crops,Chenopodiaceae,and Artemisia reflects changes in both natural environments and human activities.Percentages of cereal and Cruciferae pollen,for example,increase with decreasing altitude,but decrease with increasing latitude.Understanding pollen assemblages under artificial and human-disturbed vegetation in hilly areas may aid understanding of human impacts on the plains during the early-middle Holocene. | DING Wei PANG RuiMing XU QingHai LI YueCong CAO XianYong | 2011 | Chinese Science Bulletin2011，56，10： | 6 |
| 7 | Osthole improves synaptic plasticity in the hippocampus and cognitive function of Alzheimer's disease rats via regulating glutamate显示文摘Osthole, an effective monomer in Chinese medicinal herbs, can cross the blood-brain barrier and protect against brain injury, with few toxic effects. In this study, a rat model of Alzheimer's disease was established after intracerebroventricular injection of β-amyloid peptide (25-35). Subsequently, the rats were intraperitoneally treated with osthole (12.5 or 25.0 mg/kg) for 14 successive days. Results showed that osthole treatment significantly improved cognitive impairment and protected hippocampal neurons of Alzheimer's disease rats. Also, osthole treatment alleviated suppressed long-term potentiation in the hippocampus of Alzheimer's disease rats. In these osthole-treated Alzheimer's disease rats, the level of glutamate decreased, but there was no significant change in γ-amino-butyric acid. These experimental findings suggest that osthole can improve learning and memory impairment, and increase synaptic plasticity in Alzheimer's disease rats. These effects of osthole may be because of its regulation of central glutamate and γ-amino-butyric acid levels. | Xiaohua Dong Li Zhang Wei Li Xianyong Meng | 2012 | Neural Regeneration Research2012，7，30： | 4 |
| 8 | Microwave-assisted hydroxylation of benzene to phenol with H_2O_2 over FeSO_4/SiO_2显示文摘Hydroxyl radicals HO are generated under Fenton-like (Fe2++H2O2→HO?+OH?+Fe3+) catalytic conditions upon microwave irradiation. Liquid-phase direct catalytic oxidation of benzene to phenol was obtained using FeSO4 supported on silica gel as a solid catalyst and hydrogen peroxide as the oxidant. The effects of various parameters, such as the different solvents, the amount of solvent used, the amount of catalyst used, the reaction time, the reaction temperature and the amount of hydrogen peroxide used on the yield of phenol were studied to identify optimum reaction conditions. Conventionally heated reaction gives a phenol yield of 0.6%. A higher phenol yield of 13.9% with a selectivity of 100% is obtained when the reaction mixture was irradiated with micro-wave energy. It is concluded that microwave irradiation offers more effective control of energy input for hydroxyl radical generation that is appropriate for various synthetic reactions. | LIU Tong WEI Xianyong ZHAO Jianjun XIE Hengsen WANG Taotao ZONG Zhimin | 2010 | Mining Science and Technology2010，20，1： | 4 |
| 9 | Preparation of phosphorus-doped carbon nanospheres and their electrocatalytic performance for O_2 reduction显示文摘Phosphorus-doped carbon nanospheres without any metal residues were synthesized and characterized.The results revealed that the doping phosphorus atoms could significantly improve the electrocatalytic activity of graphitic carbon for the oxygen-reduction reaction(ORR) both in acidic and alkaline media,and the materials exhibited high electrocatalytic activity,long-term stability,and excellent tolerance to crossover effects especially in alkaline media.Quantum mechanics calculations with the density functional theory demonstrated that the changes in charge density and energetic characteristics of frontier orbitals for the P-doped graphene sheet could facilitate the ORR. | Ziwu Liu Feng Peng Hongjuan Wang Hao Yu Wenxu Zheng Xianyong Wei | 2012 | Journal of Natural Gas Chemistry2012，21，3： | 4 |
| 10 | CO2-hierarchical activated carbon prepared from coal gasification residue: Adsorption equilibrium, isotherm, kinetic and thermodynamic studies for methylene blue removal显示文摘Mineral matter in a residue(RC G)from coal gasification(CG)was removed by two-stage acid leaching.Hierarchical activated carbon(HAC)was prepared by activating RC Gwith CO2.The performance of HAC on removing methylene blue(MB)from an aqueous solution was investigated.HAC was characterized by N2 adsorption–desorption isotherm,Fourier transform infrared spectroscopy,and scanning electron microscopy.The results show that HAC exhibits hierarchical pore structure with high specific surface area(862.76 m2·g-1)and total pore volume(0.684 cm3·g-1),and abundant organic functional groups.The adsorption equilibrium data of MB on HAC are best fitted to the Redlich-Peterson.The kinetic data show that the pseudo-first-order model is more suitable at low MB concentration,while the advantages of the pseudo-second-orderand the Elovich models are more obvious as the concentration increases.According to the thermodynamic parameters,the HAC-MB adsorption process is spontaneous and endothermic. | Yuhong Kang Xianyong Wei Guanghui Liu Miao Mu Xiangrong Ma Yong Gao Zhimin Zong | 2020 | Chinese Journal of Chemical Engineering2020，28，6： | 2 |
| 11 | An evidence for the strong association of N-methyl-2-pyrrolidinone with some organic species in three Chinese bituminous coals显示文摘Three Chinese bituminous coals collected from Shenfu, Heidaigou and Feicheng coal fields were re- spectively extracted with carbon-disulfide/N-methyl-2-pyrrolidinone (CS2/NMP) mixed solvent (volume ratio 1:1) at room temperature followed by distillation of CS2 under ambient pressure and subsequent removal of most of NMP by distillation at 110℃ under reduced pressure to afford mixed sol- vent-extractable fractions (MSEFs) with small amount of NMP. Acetone-extractable fraction 1 (AEF1) was obtained by extracting each MSEF under ultrasonic irradiation at room temperature and subse- quently using a Soxhlet extractor. Direct extraction of each bituminous coal affords acetone-soluble fraction 2 (AEF2). GC/MS analysis shows that m/z of base or secondary peak in mass spectra of a se- ries of components from each AEF1 is 98, whereas such components were not detected in AEF2. Since m/z of base peak in mass spectrum of NMP itself is 99, the base or secondary peak at m/z 98 should result from loss of α-H from NMP, i.e., NMP is strongly associated with some organic species (OSs) and thereby the components detected with base or secodary peak at m/z 98 in their mass spectra should be associated NMP-OS. | LIU ChanMin ZONG ZhiMin JIA JiXian LIU GuangFeng WEI XianYong | 2008 | Chinese Science Bulletin2008，53，8： | 2 |
| 12 | Insight into the structural features of organic species in Fushun oil shale via thermal dissolution显示文摘Fushun oil shale(FOS) was subjected to thermal dissolution(TD) under different conditions. The results show that the optimal solvent, temperature, time, and ratio of solvent to FOS are ethanol, 300 °C, 2 h, and 5 ml·g^(-1),respectively and the corresponding yield of the soluble portion(SP) is 32.2%(daf), which is much higher than the oil content of FOS(ca. 6%), suggesting that TD in ethanol is an excellent way to extract organics from FOS.According to 3 direct analyses, aliphatic moieties in FOS are the most abundant followed by C\\O-containing moieties and each cluster in FOS has 3 conjugated aromatic rings on average with fewer substituents. According to the analysis with a gas chromatograph/mass spectrometer, alkanes are predominant in all the SPs. A number of alkenes were identified in the SPs from the TD, while none of the alkenes were detected in acetone-SP obtained at room temperature, implying that the TD can destroy the π-π and intertwining interactions between alkenes and macromolecular structures in FOS. Moreover, a small amount of alkyl-substituted phenols and alkoxysubstituted phenols were detected in ethanol-SP from the TD, which could be the products from ethanolyzing the macromolecular moiety of FOS. | Shengkang Wang Xianyong Wei Zhimin Zong | 2018 | Chinese Journal of Chemical Engineering2018，26，10： | 2 |
| 13 | Oxidation of Shenfu Coal with RuO4 and NaOCl显示文摘 | Yao Zishuo Wei Xianyong Lv Jie | 2010 | Energy and Fuels2010，24，3： | 1 |
| 14 | Ad- vances in the study of hydrogen transfer to model com- pounds for coal liquefaction 显示文摘 | Wei Xianyong Eisuke O Zong Zhimin | 2000 | Fuel Processing Tech- nology2000，62，： | 1 |
| 15 | Environmental magnetic studies of sediment cores from Gonghai Lake: implications for monsoon evolution in North China during the late glacial and Holocene显示文摘 | Fahu Chen Jianbao Liu Qinghai Xu Yuecong Li Jianhui Chen Haitao Wei Qingsong Liu Zongli Wang Xianyong Cao Shengrui Zhang | 2013 | Journal of Paleolimnology2013，，3： | 1 |
| 16 | Spatial homogenization of soil-surface pollen assemblages improves the reliability of pollen-climate calibration-set显示文摘To make a reliable reconstruction of past climate from soil-surface modern pollen,it is necessary to reduce the sources of error.In this paper,pollen percentages of the sub-continental scale modern pollen-climate dataset from China and Mongolia(with 68%soil-surface samples)are homogenized at various spatial scales.A tailored calibration-set is then applied to lake sediment-surface pollen assemblages from north-central China to evaluate their predictive power.Results indicate that spatial homogenization of modern pollen percentages can increase the proportion of inertia explained by climatic variables in CCA and improve the model performance of leave-one-out cross-validation using WA-PLS.Soil-surface pollen assemblages can thus be employed into a calibration-set for reliable climate estimation and they perform better when the calibration-set has been locally homogenized.Small-scale(e.g.,radii 2,5,or 10 km)homogenization reduces the local noise in soil-surface pollen assemblages and improves the cross-validated performance,while broader scale homogenization(more than 20 km radius)blurs the pollen-climate relationship.Lake sediment-surface pollen assemblages from close to the shore could contain pollen grains transported by rivers or from the shore vegetation and thus fail to represent regional climate well like the assemblages from the central part and deep-water area of lake. | Fang TIAN Xianyong CAO Ran ZHANG Qinghai XU Wei DING Xingqi LIU Baolin PAN Jianhui CHEN | 2020 | Science China Earth Sciences2020，63，11： | 1 |
| 17 | The Solar Upper Transition Region Imager(SUTRI)Onboard the SATech-01 Satellite显示文摘The Solar Upper Transition Region Imager(SUTRI)onboard the Space Advanced Technology demonstration satellite(SATech-01),which was launched to a Sun-synchronous orbit at a height of~500 km in 2022 July,aims to test the on-orbit performance of our newly developed Sc/Si multi-layer reflecting mirror and the 2k×2k EUV CMOS imaging camera and to take full-disk solar images at the Ne VII 46.5 nm spectral line with a filter width of~3 nm.SUTRI employs a Ritchey-Chrétien optical system with an aperture of 18 cm.The on-orbit observations show that SUTRI images have a field of view of~416×416 and a moderate spatial resolution of~8″without an image stabilization system.The normal cadence of SUTRI images is 30 s and the solar observation time is about16 hr each day because the earth eclipse time accounts for about 1/3 of SATech-01's orbit period.Approximately15 GB data is acquired each day and made available online after processing.SUTRI images are valuable as the Ne VII 46.5 nm line is formed at a temperature regime of~0.5 MK in the solar atmosphere,which has rarely been sampled by existing solar imagers.SUTRI observations will establish connections between structures in the lower solar atmosphere and corona,and advance our understanding of various types of solar activity such as flares,filament eruptions,coronal jets and coronal mass ejections. | Xianyong Bai Hui Tian Yuanyong Deng Zhanshan Wang Jianfeng Yang Xiaofeng Zhang Yonghe Zhang Runze Qi Nange Wang Yang Gao Jun Yu Chunling He Zhengxiang Shen Lun Shen Song Guo Zhenyong Hou Kaifan Ji Xingzi Bi Wei Duan Xiao Yang Jiaben Lin Ziyao Hu Qian Song Zihao Yang Yajie Chen Weidong Qiao Wei Ge Fu Li Lei Jin Jiawei He Xiaobo Chen Xiaocheng Zhu Junwang He Qi Shi Liu Liu Jinsong Li Dongxiao Xu Rui Liu Taijie Li Zhenggong Feng Yamin Wang Chengcheng Fan Shuo Liu Sifan Guo Zheng Sun Yuchuan Wu Haiyu Li Qi Yang Yuyang Ye Weichen Gu Jiali Wu Zhe Zhang Yue Yu Zeyi Ye Pengfeng Sheng Yifan Wang Wenbin Li Qiushi Huang Zhong Zhang | 2023 | Research in Astronomy and Astrophysics2023，23，6： | 1 |
| 18 | Synthesis of light hydrocarbons over Fe/AC catalysts显示文摘A series of Fe/AC catalysts for catalytic hydrogenation of CO to light hydrocarbons(LHCs) were prepared by decomposing Fe(CO)5 in an autoclave.The catalysts activities were tested in a high-pressure micro reactor.The results show that both CO conversion and LHCs selectivity were significantly affected by the amount of Fe loaded onto the catalysts.The optimum Fe content was determined to be 10% by weight of the catalyst.Over the corresponding catalyst(i.e.,10% Fe/C catalyst),the conversion of CO and the selectivity of LHCs were 94.8% and 59.2%,respectively,at 360 °C.Based on various catalyst characterization techniques,such as XRD,BET and SEM,the catalysts surface areas and pore volume decreased and the smaller particles agglomerated at the edges and corners in the outer region of the support with the increasing Fe content.The agglomerated particles increased greatly when the iron content of the catalyst was higher than 10%.The decrease of catalyst activity can be due to the agglomerated particles. | Zhao Jianjun Zong Zhimin Wang Taotao Liu Tong Wei Xianyong | 2012 | International Journal of Mining Science and Technology2012，22，2： | 1 |
| 19 | Advances in the Study of Hydrogen Transfer to Model Compounds for Coal Liquefaction显示文摘 | Wei Xianyong Eisuke O Zong Zhimin | 2000 | Fuel Processing Technology2000，62，： | 1 |
| 20 | Tribological behaviors and mechanism of sulfur and phosphorus-free or- ganic molybdate ester with zinc dialkyldithiophosphate显示文摘 | Hu Jianqiang Wei Xianyong Dai Gelin | 2008 | Tribol Int2008，41，： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员