|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Low-carbon transition of iron and steel industry in China:Carbon intensity, economic growth and policy intervention显示文摘As the biggest iron and steel producer in the world and one of the highest CO2 emission sectors, China's iron and steel industry is undergoing a low-carbon transition accompanied by remarkable technological progress and investment adjustment, in response to the macroeconomic climate and policy intervention. Many drivers of the CO2 emissions of the iron and steel industry have been explored, but the relationships between CO2 abatement,investment and technological expenditure, and their connections with the economic growth and governmental policies in China, have not been conjointly and empirically examined. We proposed a concise conceptual model and an econometric model to investigate this crucial question. The results of regression, Granger causality test and impulse response analysis indicated that technological expenditure can significantly reduce CO2 emissions, and that investment expansion showed a negative impact on CO2 emission reduction. It was also argued with empirical evidence that a good economic situation favored CO2 abatement in China's iron and steel industry, while achieving CO2 emission reduction in this industrial sector did not necessarily threaten economic growth.This shed light on the dispute over balancing emission cutting and economic growth.Regarding the policy aspects, the year 2000 was found to be an important turning point for policy evolution and the development of the iron and steel industry in China. The subsequent command and control policies had a significant, positive effect on CO2 abatement. | Bing Yu Xiao Li Yuanbo Qiao Lei Shi | 2015 | Journal of Environmental Sciences2015，27，2： | 12 |
| 2 | Daily variation characteristics of CO2 emission fluxes and contributions of environmental factors in semiarid grassland of Inner Mongolia, China显示文摘Fixed field experimental studies are carried out on daily variations of the undis- turbed community and soil respiration fluxes in different phenological phases of 2001―2002 in semiarid Aneurolepidium chinense steppe of Inner Mongolia, China using static black chamber method. Corresponding statistical analysis of the contributions of the water-heat factors (air temperature, ground temperature, surface soil water content) and ecological factors (above- ground biomass, underground biomass, litter biomass) to daily variation law of the undisturbed community and soil respiration fluxes as well as differences in daily respiration are also con- ducted. The results indicate that undisturbed community and soil respiration have apparent daily variation laws, daily variation patterns of respiration fluxes during different phenological phases are basically the same, and the variations of environmental factors only exert effect on CO2 emission intensities, while the effect on daily variation pattern of grassland CO2 emission fluxes is relatively small. The daily total respiration of the undisturbed community in different phenological phases ranges from 1.34―10.13 g·m?2; soil daily total respiration ranges from 0.98―5.17 g·m?2; both daily variations of undisturbed community and soil respiration fluxes are significantly corre- lated (p < 0.05) or extremely significantly correlated (p < 0.01) with air temperatures and ground surface temperatures, but the correlativity with the soil temperature at 5 and 10 cm depths is relatively weak; multiple regression analysis indicates that about 80% of the difference in daily respiration of the undisturbed community among different phenological phases is induced by the variation of the aboveground biomass, while the variations of the remaining factors can jointly explain around 20% of the daily respiration variations of the whole grassland ecosystem; about 83% of the soil daily respiration variation of the different phenological phases is caused by 0―20 cm underground biomass. Besides, surface soil water content is also an important environmental factor affecting soil daily respiration variations of the Aneurolepidium chinense steppe, but its partial correlation coefficient with soil daily respiration amount does not reach the significance level of 0.05. | QI Yuchun DONG Yunshe LIU Jiyuan GENG Yuanbo LI Mingfeng YANG Xiaohong LIU Lixin | 2005 | Science China Earth Sciences2005，48，7： | 11 |
| 3 | A MESHLESS LOCAL PETROV-GALERKIN METHOD FOR GEOMETRICALLY NONLINEAR PROBLEMS显示文摘Nonlinear formulations of the meshless local Petrov-Galerkin (MLPG) method are presented for geometrically nonlinear problems. The method requires no mesh in computation and therefore avoids mesh distortion difficulties in the large deformation analysis. The essential boundary conditions in the present formulation are imposed by a penalty method. An incremental and iterative solution procedure is used to solve geometrically nonlinear problems. Several examples are presented to demonstrate the effectiveness of the method in geometrically nonlinear problems analysis. Numerical results show that the MLPG method is an effective one and that the values of the unknown variable are quite accurate. | Xiong Yuanbo Long Shuyao Hu De'an Li Guangyao | 2005 | Acta Mechanica Solida Sinica2005，18，4： | 9 |
| 4 | Rat model of cholelithiasis with human gallstones implanted in cholestasis-induced virtual gallbladder显示文摘AIM:To facilitate translational research on cholelithiasis,we have developed a rat model of human gallstones by exploiting the unique biliopancreatic features of this species.METHODS:Under anesthesia,16 adult rats of equal genders underwent two times of abdominal surgery.First,their common bile duct(CBD)was ligated to cause cholestasis by total biliary obstruction(TBO).On day 0,1,3,7,14,21 and 28 after TBO,magnetic resonance imaging(MRI)was conducted to monitor the dilatation of the CBD,and blood was sampled to analyze total serum bilirubin(TSB).Secondly,on day 30,the abdomen was re-opened and gallstone(s)collected from human patients were implanted in the dilated CBD asa virtual gallbladder(VGB),which was closed by suture ligation.This rat cholelithiasis model was examined by MRI,clinical observation,microcholangiography and histology.RESULTS:All rats survived two laparotomies.After ligation,the CBD was dilated to a stable size of 4 to30 mm in diameter on day 21-28,which became a VGB.The rats initially showed signs of jaundice that diminished over time,which paralleled with the evolving TSB levels from 0.6±0.3 mg/d L before ligation,through a peak of 10.9±1.9 mg/dL on day 14,until a nearly normalized value after day 28.The dilated CBD with thickened wall allowed an incision for implantation of human gallstones of 1-10 mm in diameter.The rat cholelithiasis was proven by in vivo MRI and postmortem microcholangiography and histomorphology.CONCLUSION:A rat model cholelithiasis with human gallstones has been established,which proves feasible,safe,reliable,nontoxic and cost-effective.Given the gallstones of human origin,applications of this model may be of help in translational research such as optical detection and lysis of gallstones by systemic drug administration. | Marlein Miranda Cona Yewei Liu Ting Yin Yuanbo Feng Feng Chen Stefaan Mulier Yue Li Jian Zhang Raymond Oyen Yicheng Ni | 2016 | World Journal of Methodology2016，6，2： | 7 |
| 5 | Two energy balance closure approaches: applications and comparisons over an oasis-desert ecotone显示文摘Studies of energy balance that rely on eddy covariance(EC) are always challenged by energy balance closure, which is mainly caused by the underestimations of latent heat flux(LE) and sensible heat flux(Hs). The Bowen ratio(BR) and energy balance residual(ER) approaches are two widely-used methods to correct the LE. A comprehensive comparison of those two approaches in different land-use types is essential to accurately correcting the LE and thus improving the EC experiments. In this study, two energy balance approaches(i.e., BR and ER) were compared to correct the LE measured at six EC sites(i.e., three vegetated, one mixed and two non-vegetated sites) in an oasis-desert ecotone of the Heihe River Basin, China. The influences of meteorological factors on those two approaches were also quantitatively assessed. Our results demonstrated that the average energy closure ratio((LE+Hs)/(Rn–Gs); where Rn is the surface net radiation and Gs is the surface soil heat flux) was approximately close to 1.0 at wetland, maize and village sites, but far from 1.0 at orchard, Gobi and desert sites, indicating a significant energy imbalance at those three latter sites. After the corrections of BR and ER approaches that took into account of soil heat storage, the corrected LE was considerably larger than the EC-measured LE at five of six EC sites with an exception at Gobi site. The BR and ER approaches yielded approximately similar corrected LE at vegetated and mixed sites, but they generated dissimilar results at non-vegetated sites, especially at non-vegetated sites with low relative humidity, strong wind, and large surface-air temperature difference. Our findings provide insight into the applicability of BR and ER approaches to correcting EC-based LE measurements in different land-use types. We recommend that the BR-corrected and ER-corrected LE could be seriously reconsidered as validation references in dry and windy areas. | PAN Xin LIU Yuanbo FAN Xingwang GAN Guojing | 2017 | Journal of Arid Land2017，9，1： | 7 |
| 6 | Dynamic model for sucking process of pneumatic cutting-type safflower harvest device显示文摘This study proposed a method using negative pressure sucking the petals adhered around cones.The structural parameters of the sucking device affect the flow-field distribution in the negative-pressure air chamber.In order to improve the harvesting efficiency and quality of the pneumatic cutting-type safflower harvest device,a dynamic model was established and the safflower petals upwind area were measured.According to the test,the size parameters of the thornless Yumin safflower were as follows:the average necking diameter was 6.30 mm,the average capitulum diameter was 20.89 mm and the average petal length was 22.39 mm.The measured maximum frontal area of the safflower petal was 11-40 mm2.Secondly,the required negative pressure power that resulted in the rise of safflower petals was calculated.In general,when the suction of the negative pressure reaches 9.8 m/s,the safflower petals can be sucked successfully.The simulation of the flow field in the suction mouth indicated that the streamlined suction mouth was beneficial in reducing resistance and the test results of high-speed photography showed that the aforementioned condition could improve the efficiency of the upright safflower.And the test verified that the rate of the unshaped petals in the cylindrical air tunnel was low and the efficiency of carding and shaping under negative pressure was considerably better in wet petals than in dry ones.Results of the upright safflower petal experiment were consistent with the theoretical analysis and simulation conclusion,and indicated the precision of the dynamic model and suction flower mouth orifice-shaped simulation analysis. | Ge Yun Zhang Lixin Qian Ying Jiao Xiaopan Chen Yuanbo | 2016 | International Journal of Agricultural and Biological Engineering2016，9，5： | 6 |
| 7 | Thymine DNA glycosylase promotes transactivation of β-catenin/TCFs by cooperating with CBP显示文摘胸腺嘧啶 DNA glycosylase (TDG ) ,开始 G/T 和 G/U 的修理的酶错配,最近被发现 crucialin 胚胎维持 epigenetic 稳定性并且便于活跃 DNA demethylation 的开发。这里,我们在作为 -catenin/TCFs 建筑群的 transcriptional 激活剂发信号的 Wnt 报导 TDG 的 novelrole。我们 TDG 绑在 thetranscriptional 因素家庭 LEF1/TCFs 并且加强的数据表演 -catenin/TCFs transactivation,当 TDG 弄空压制 Wnt3a-stimulatedreporter 活动或目标基因抄写时。下次,我们显示出那 CBP,已知的激活剂,也为在目标倡导者上形成合作建筑群的 TDG functionthrough 被要求。而且,有在人的冒号 cancertissue 的 TDG 层次的举起,并且 TDG 击倒禁止冒号房间的增长。总的来说,我们的结果表明作为新激活剂, TDG 支持 -catenin/TCFs transactivation 并且机能上地在正规 Wnt 发信号与 CBP 合作。 | Yingying Jia Fen Nie Aiying Du Zhangcheng Chen Yuanbo Qin Tao Huang Xiaomin Song Lin Li | 2014 | Journal of Molecular Cell Biology2014，8，3： | 5 |
| 8 | Removal of iron from ilmenite by KOH leaching-oxalate leaching method显示文摘Oxalic acid was used for the removal of iron from the intermediates of ilmenite leached by KOH liquor. Various parameters, such as pH, temperature, initial oxalate concentration, and illumination were investigated. Meanwhile, it was found that orthorhombic crystal Ti2O2(OH)2(C2O4)·H2O formed as the leaching proceeded. Scanning electronic microscope (SEM) images implied that the formation of Ti2O2(OH)2(C2O4)·H2O with good crystallinity proceeded through three stages. Calcining Ti2O2(OH)2(C2O4)·H2O, anatase (350°C) or rutile (550°C) type TiO2 was obtained, respectively. Element analysis found that the calcined product contained 94.9% TiO2 and 2.5% iron oxide, but only about 1600 ppm dissolvable iron oxide was left, which indicates that oxalic acid was comparatively effective on iron oxide removal from the intermediates. Finally, an improved route was proposed for the upgrading of ilmenite into rutile. | WANG Yuanbo QI Tao CHU Jinglong ZHAO Wei | 2010 | Rare Metals2010，29，1： | 5 |
| 9 | Design and baseline data of a populationbased metabonomics study of eye diseases in eastern China: the Yueqing Ocular Diseases Investigation显示文摘Background:China is undergoing a massive transition toward an urban and industrial economy.These changes will restructure the demographics and economy which will eventually influence the future patterns of disease.The risk factors of vision-impairing eye diseases remain ambiguous and poorly understood.Metabolomics is an ideal tool to understand and shed light on the ocular disease mechanisms for earlier treatment.This article aims to describe the design,methodology and baseline data of the Yueqing Ocular Diseases Investigation(YODI),a developed county population-based study to determine the prevalence and primary causes of visual impairment;also with metabonomics analysis we aimed to identify,predict and suggest some preventive biomarkers that cause blindness.Methods:A population-based,cross-sectional study.Randomized clustering sampling was used to identify adults aged 50 years and older in Xiangyang Town,Yueqing county-level City.The interviews covered demographic,behavioral,ocular risk factors and mental health state.The ocular examination included visual acuity,autorefraction,intraocular pressure,anterior and posterior segment examinations,fundus photography,retinal tomography and angiography,and visual field testing.Anthropometric measurements included height and weight,waist and hip circumference,blood pressure,pulse rate,electrocardiogram,and abdominal ultrasound scan.A venous blood sample was collected for laboratory tests and metabonomics studies.Results:Of the 5319 individuals recruited for the YODI,4769(89.7%)subjects were enrolled for analyses.The median age was 62.0 years,and 45.6%were male.The educational level of illiteracy or semi-illiteracy,primary,middle and high school or above was 29.8%,45.5%,20.1%,and 3.3%,respectively.Majority of the participants were female,younger,and less educated when compared with nonparticipants.The average body mass index and waist-hip ratios were 24.4±3.4 kg/m^(2) and 0.9±0.1 respectively.Blood sample collection reached a sample size of 1909(479 from subjects with selfreported diabetes and 1430 from one-third of the 4290 subjects without self-reported diabetes).Conclusions:The YODI provides population-based data with a high response rate(89.7%)on the prevalence and primary causes of major vision-impairing eye diseases in developed county areas in eastern China.Metabonomics analysis from YODI will provide further association of metabolic characteristics with the visual impairment eye diseases.The risk prediction model could be created and has the potential to be generalized to developed eastern areas in China for prevention. | Yuxuan Deng Yuanbo Liang Sigeng Lin Liang Wen Jin Li Yue Zhou Meixiao Shen Jingwei Zheng Kemi Feng Yanting Sun Kwapong Willaim Robert Jia Qu Fan Lu | 2020 | Eye and Vision2020，7，1： | 4 |
| 10 | Biocompatibility of nano-hydroxyapatite/Mg-Zn-Ca alloy composite scaffolds to human umbilical cord mesenchymal stem cells from Wharton's jelly in vitro显示文摘Seeding cells and scaffolds play pivotal roles in bone tissue engineering and regenerative medicine.Wharton’s jelly-derived mesenchymal stem cells(WJCs)from human umbilical cord represent attractive and promising seeding cells in tissue regeneration and engineering for treatment applications.This study was carried out to explore the biocompatibility of scaffolds to seeding cells in vitro.Rod-like nano-hydroxyapatite(RN-HA)and flake-like micro-hydroxyapatite(FM-HA)coatings were prepared on Mg-Zn-Ca alloy substrates using micro-arc oxidation and electrochemical deposition.WJCs were utilized to investigate the cellular biocompatibility of Mg-Zn-Ca alloys after different surface modifications by observing the cell adhesion,morphology,proliferation,and osteoblastic differentiation.The in vitro results indicated that the RN-HA coating group was more suitable for cell proliferation and cell osteoblastic differentiation than the FM-HA group,demonstrating better biocompatibility.Our results suggested that the RN-HA coating on Mg-Zn-Ca alloy substrates might be of great potential in bone tissue engineering. | GUAN FangXia MA ShanShan SHI XinYi MA Xun CHI LianKai LIANG Shuo CUI YuanBo WANG ZhiBin YAO Ning GUAN ShaoKang YANG Bo | 2014 | Science China(Life Sciences)2014，57，2： | 4 |
| 11 | Really interesting new gene finger protein 121 is a novel Golgi-localized membrane protein that regulates apoptosis显示文摘确实有趣的新基因(戒指) 手指蛋白质在人的染色体代表一个大蛋白质家庭,并且在生理的活动和癌症开发玩 crucialroles。一些戒指手指蛋白质的生物功能仍然是 unknown.Here,我们描述了新奇、人的 Golgi 局部性的戒指手指蛋白质的生物活动 121 (RNF121 ) ,是的 functionof,这样远,未知。不同于 endoplasmic 在 Caenorhabditis elegans 的蜂窝胃局部性的 RNF121,人的 RNF121 对 Golgi 仪器主要局部性。RNF121 击倒的禁止的房间生长和导致的 apoptosis,它被 caspase-3 激活和劈开伴随 poly (腺苷 diphosphate 核糖) 聚合酶。Z-VAD-FMK,一个 pan-caspase 禁止者,禁止了 RNF121 击倒导致 apoptosis。野类型的 RNF121 的在表示上,然而并非 RNF121 的 theRING 领域异种,减少的 RNF121 击倒导致 apoptosis,显示戒指领域被要求调整 forRNF121 的 apoptosis。而且, RNF121 击倒的提高的导致 etoposide 的 apoptosis。这是到 demonstratethat RNF121 的第一研究是 apoptosis 的一个新奇管理者并且为癌症提供一个新潜在的目标治疗。 | Yuanbo Zhao | 2014 | Acta Biochimica et Biophysica Sinica2014，46，8： | 3 |
| 12 | Effects of mulches on water use in a winter wheat/summer maize rotation system in Loess Plateau, China显示文摘Limited water resources often result in reduced crop yield and low water productivity(WP). In northwestern China, crop production is generally dependent on precipitation. Therefore, a variety of agricultural rainwater harvesting(ARH) techniques have been used for conserving soil moisture, ameliorating soil environment, increasing crop yield, and improving water use efficiency. A two-year(2013–2015) field experiment was conducted under a typical sub-humid drought-prone climate in Yangling(108°24′E, 34°20′N; 521 m a.s.l.), Shaanxi Province, China, to explore the effects of mulching(same for summer maize and winter wheat) on soil moisture, soil temperature, crop water consumption, and crop yield with a winter wheat/summer maize rotation. Crops were planted in a ridge-furrow pattern and the treatments consisted of a transparent film mulch over the ridges(M1), a crop straw mulch in the furrows(M2), a transparent film mulch over the ridges and a crop straw mulch in the furrows(M3), a black film mulch over the ridges and a crop straw mulch in the furrows(M4), and a control with no mulch(CK). Results showed that M4 was the best treatment for improving soil water storage and content, and decreasing crop water consumption during the summer maize and winter wheat rotation. In both maize and wheat seasons, M1 had a higher soil temperature than M2 and CK, and M3 had a higher soil temperature than M4. In the maize seasons, M4 had the highest yield, WP, and precipitation productivity(PP), with the average values for these parameters increasing by 30.9%, 39.0%, and 31.0%, respectively, compared to those in CK. In the wheat seasons, however, M3 had the highest yield, WP, and PP, with the average values for these parameters being 23.7%, 26.7%, and 23.8% higher, respectively, than those in CK. Annual yield(maize and wheat yields combined) and WP did not differ significantly between M3 and M4. These results suggested that M3 and M4 may thus be the optimal ARH practices for the production of winter wheat and summer maize, respectively, in arid and semi-arid areas. | YIN Minhua LI Yuannong XU Yuanbo ZHOU Changming | 2018 | Journal of Arid Land2018，10，2： | 3 |
| 13 | NUMERICAL ANALYSES OF DESIGN AND ASSEMBLY FOR MAIN COMPONENTS OF BESIII显示文摘主要飘移房间(MDC ) 和电磁的热量计的设计和制造是在升级的电子正电子 collider 投射的北京的很重要的问题。在 BESIII 的电磁的热量计(EMC ) 的整个团是 40 t,这样高的僵硬,力量和动态性质为设计被要求全部电磁的热量计结构。基于数字技术,力量和 EMC 的动态性质被分析,它为设计提供理论参考全部 EMC 结构。MDC 由元素组成与 28 680 对了高度敏感的电线并且在集会期间,电线被串由层的层。电线的拉长的力量连续地变化并且在整个过程结合对方。有高精确(“特别元素出生”和死亡) 的当模特儿的技术小心地被用来在汇编的过程期间学习压力状态。电线的拉长的力量的变化因此被调查,并且几个设计计划被评估并且优化。研究结果直接在北京电子正电子 collider 的新工程被采用了。 | ZENG Pan LEI Liping ZHAO Ruihai LI Ying CHEN Yuanbo TANG Xiao | 2007 | Chinese Journal of Mechanical Engineering2007，20，5： | 3 |
| 14 | Study on the imaging ability of the 2D neutron detector based on MWPC显示文摘A 2D neutron detector based on 3 He convertor and MWPC with an active area of 200 mm×200 mm has been successfully designed and fabricated.The detector has been tested with Am/Be neutron source and with collimated neutron beam with the wavelength of =1.37.The best spatial resolution of 1.18 mm(FWHM) and good linearity were obtained.This is in good agreement with theoretical calculations. | TIAN LiChao CHEN YuanBo TANG Bin ZHOU JianRong QI HuiRong LIU RongGuang ZHANG Jian YANG GuiAn XU Hong CHEN DongFeng SUN ZhiJia | 2013 | Science China(Physics,Mechanics & Astronomy)2013，56，10： | 3 |
| 15 | Pancreatic imaging:Current status of clinical practices and small animal studies显示文摘Different causative factors acting on the pancreas can result in diseases such as pancreatitis, diabetes and pancreatic tumors. The high incidence and mortality of pancreatic diseases have placed diagnostic imaging in a crucial position in daily clinical practice. In this minireview article different pancreatic imaging techniques are discussed, from the standard clinical imaging modalities and state of the art clinical magnetic resonance imaging techniques to current situations in pre-clinical pancreatic imaging studies. In particular, the challenges of pre-clinical rodent pancreatic imaging are addressed, with both the image acquisition techniques and the post-processing methods for rodent pancreatic imaging elaborated. | Ting Yin Yewei Liu Ronald Peeters Yuanbo Feng Yicheng Ni | 2017 | World Journal of Methodology2017，7，3： | 2 |
| 16 | Shifting from homogeneous to heterogeneous surfaces in estimating terrestrial evapotranspiration: Review and perspectives显示文摘Terrestrial evapotranspiration(ET)is a crucial link between Earth’s water cycle and the surface energy budget.Accurate measurement and estimation remain a major challenge in geophysical,biological,and environmental studies.Pioneering work,represented by Dalton and Penman,and the development of theories and experiments on turbulent exchange in the atmospheric boundary layer(ABL),laid the foundation for mainstream methodologies in ET estimation.Since the 1990s,eddy covariance(EC)systems and satellite remote sensing have been widely applied from cold to tropical and from arid to humid regions.They cover water surfaces,wetlands,forests,croplands,grasslands,barelands,and urban areas,offering an exceptional number of reports on diverse ET processes.Surface nocturnal ET,hysteresis between ET and environmental forces,turbulence intermittency,island effects on heterogeneous surfaces,and phase transition between underlying surfaces are examples of reported new phenomena,posing theoretical and practical challenges to mainstream ET methodologies.Additionally,based on non-conventional theories,new methods have emerged,such as maximum entropy production and nonparametric approaches.Furthermore,high-frequency on-site observation and aerospace remote sensing technology in combination form multi-scale observations across plant stomata,leaves,plants,canopies,landscapes,and basins.This promotes an insightful understanding of diverse ET processes and synthesizes the common mechanisms of the processes between and across spatial and temporal scales.All the recent achievements in conception,model,and technology serve as the basis for breaking through the known difficulties in ET estimation.We expect that they will provide a rigorous,reliable scientific basis and experimental support to address theoretical arguments of global significance,such as the water-heat-carbon cycle,and solve practical needs of national importance,including agricultural irrigation and food security,precise management of water resources and eco-environmental protection,and regulation of the urban thermal environment and climate change adaptation. | Yuanbo LIU Guoyu QIU Hongsheng ZHANG Yonghui YANG Yinsheng ZHANG Quan WANG Wenzhi ZHAO Li JIA Xibin JI Yujiu XIONG Chunhua YAN Ning MA Shumin HAN Yifan CUI | 2022 | Science China Earth Sciences2022，65，2： | 2 |
| 17 | Characteristic of Soil Hydro-Physical Properties and Water Dynamics under Different Vegetation Restoration Types显示文摘By combining the observation of the soil profile at field and the chemical and physical analysis in laboratory, a study on the hydro-physical properties of soil in six different vegetation types and the dynamics of water content after rain was conducted in Wanchanggou, Guangyuan City to find out the vegetation types with effective water-conservation functions in order to serve the ecological restoration in the low hill heavy rain area upper the Jialing River. Results showed that:the hydro-physical properties of soil in the mixed Alnus cremastogyne and Cupressua Leyland forest (AcCl) were best. But in the depth of 0-20 cm. The properties of soil in the abandoned cropland (Fm) was better than that in the AcCl. The soil bulk densities varied significantly between the layers of 0-20 cm and 20-40 cm in all the six vegetation types except that in the Robinia pseudoacacia shrub forest (RpII), and the changes of the maximum and the capillary moisture capacity between layers were significant only in the Fm and in the AcCl. Of these stands, the AcCl had the shortest water-absorbing period and the strongest moisture changes in the upper layer (0-15 cm). In the same stand, the deeper the soil layer, the slighter the soil moisture varied, and the longer the soil moisture accumulating process lasted. | MA Zelong GONG Yuanbo HU Tingxing | 2006 | Wuhan University Journal of Natural Sciences2006，11，4： | 2 |
| 18 | Identification and Functional Characterization of a NovelΔ12 Fatty Acid Desaturase Gene from Haematococcus pluvialis显示文摘The freshwater microalga Haematococcus pluvialis accumulates large amounts of fatty acids in response to adverse conditions.However,the key fatty acid desaturase genes in H.pluvialis remain unknown.In this study,we cloned and functionally characterized aΔ12 fatty acid desaturase gene,and designated it as HpFAD2.The open reading frame of HpFAD2 consisted of 1137 base pairs and encoded 378 amino acids.The deduced polypeptide showed 70%identity to other endoplasmic reticulumΔ12 fatty acid desaturases,whereas it had only 44%identity to plastidΔ12 fatty acid desaturases.The PSORT algorithm and phylogenetic analysis further confirmed its affiliation to the endoplasmic reticulumΔ12 fatty acid desaturases.Heterologous expression was performed in Saccharomyces cerevisiae cells transformed with the recombinant plasmid pYES2-HpFAD2.Two additional fatty acids(C16:2 and C18:2)were detected in the yeast transformants.The results indicatedΔ12 desaturation activity and substrate preference for C18:1 over C16:1.The transcriptional levels of H.pluvialis HpFAD2 at different growth stages were measured by quantitative polymerase chain reaction(PCR),indicating that the HpFAD2 transcriptional levels were significantly higher in red cells than those in green cells.Our study brings more insight into the fatty acid biosynthetic pathway of H.pluvialis. | ZHANG Lin CHEN Wenbi YANG Shuping ZHANG Yuanbo XU Jilin YANG Dongjie WU Zuyao LIU Tong CAO Jiayi | 2020 | Journal of Ocean University of China2020，19，6： | 2 |
| 19 | Simulation study on the boron-coated GEM neutron beam monitor显示文摘A Monte Carlo method of the 3D GEM simulation is introduced.The physical process of the neutron detection is described with the Geant4 code and the Garfield code.The results of the optimized electric-fields,the emitted ions spectrum,the electrons transverse diffusion and the signal width are presented.Moreover,the preliminary result with a CF-252 neutron source is reported.These are useful in designing detector structures and to provide an optimized option for the development of the boron-coated GEM neutron beam monitor. | WANG YanFeng SUN ZhiJia ZHOU JianRong YANG GuiAn XU Hong WANG Tuo CHEN YuanBo | 2013 | Science China(Physics,Mechanics & Astronomy)2013，56，10： | 2 |
| 20 | Enantioseparation and Determination of the Chiral Fungicide Furametpyr Enantiomers in Rice, Soil, and Water by High‐Performance Liquid Chromatography显示文摘 | Fengshou Dong Xiu Chen Jun Xu Xingang Liu Zenglong Chen Yuanbo Li Hongjun Zhang Yongquan Zheng | 2013 | Chirality2013，，12： | 2 |
您所在的机构暂未开通此部分的功能，请联系管理员