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| 1 | Effects of a check dam system on the runoff generation and concentration processes of a catchment on the Loess Plateau显示文摘As an important soil and water conservation engineering measure,more than 100,000 check dams are constructed across the Loess Plateau;these dams play a vital role in reducing floods and sediment in the region.However,the effects of check dams on hydrologic process are still unclear,particularly when they are deployed as a system for watershed soil and water management.This study examined the watershed hydrologic process modulated by the check dam system in a typical Loess Plateau catchment.By simulating scenarios with various numbers of check dams using a distributed physically-based hydro-logical model,the effects of the number of check dams on runoff generation and concentration were analyzed for the study catchment.The results showed that the presence of check dams reduced the peak discharge and the flood volume and extended the flood duration;the reduction effect on peak discharge was most significant among the three factors.The system of check dams substantially decreased the runoff coefficient,and the runoff coefficient reduction rate was greater for rainstorms with shorter return periods than for rainstorms with longer return periods.The check dams increased the capacity of the catchment regulating and storing floods and extended the average runoff concentration time in the catchment that flattened the instantaneous unit hydrograph.This study reveals the influencing mech-anism of check dam system on the watershed hydrological process under heavy rainstorm conditions and provides a theoretical basis for evaluating the effects of numerous check dams on regional hydrology and water resources on the Loess Plateau. | Shuilong Yuan Zhanbin Li Li Chen Peng Li Zeyu Zhang Junzheng Zhang Anna Wang kunxia Yu | 2022 | International Soil and Water Conservation Research2022，10，1： | 3 |
| 2 | Experiment study on micro-structure on different crystallographic planes of mc-Si etched in alkaline solution显示文摘The investigation of multi-crystalline silicon(mc-Si) surface etching technology is a key point in solar cell research.In this paper,mc-Si surface was etched in the common alkaline solution modified by an additive for 20 minutes at 78-80°C.Samples' surface morphology was observed by scanning electron microscope(SEM).It is firstly found that the etched mc-Si surface has the uniform distribution of trap pits although the morphologies of trap pits are slightly different on different crystallographic planes.Si(100) plane was covered with many small Si-mountain ranges or long V-shape channels arranged in a crisscross pattern.For(110) plane and(111) plane,they were full of a lot of triangle pit-traps(or quadrilateral holes) and twisted earthworm trap pits,respectively.The measured reflectance of the sample was 20.5% at wavelength range of 400-900 nm.These results illustrate that alkaline solution modified by an additive can effectively etch out trap pits with a good trapping light effect on mc-Si surfaces.This method should be very valuable for mc-Si solar cells. | WANG KunXia FENG ShiMeng XU HuaTian TIAN JiaTong YANG ShuQuan HUANG JianHua PEI Jun | 2012 | Science China(Technological Sciences)2012，55，6： | 1 |
| 3 | Cx31 is assembled and trafficked to cell surface by ER-Golgi pathway and degraded by proteasomal or lysosomal pathways显示文摘Gap junctions, consisting of connexins, allow the exchange of small molecules (<1 kD) between adjacent cells, thusproviding a mechanism for synchronizing the responses of groups of cells to environmental stimuli. Connexin 31 is amember of the connexin family. Mutations on connexin 31 are associated with erythrokeratodermia variabilis, hearingimpairment and peripheral neuropathy. However, the pathological mechanism for connexin 31 mutants in these diseasesare still unknown. In this study, we analyzed the assembly, trafficking and metabolism of connexin 31 in HeLa cellsstably expressing connexin 31. Calcein transfer assay showed that calcein transfer was inhibited when cells weretreated with Brefeldin A or cytochalasin D, but not when treated with nocodazole or α-glycyrrhetinic acid, suggestingthat Golgi apparatus and actin filaments, but not microtubules, are crucial to the trafficking and assembly of connexin31, as well as the formation of gap junction intercellular communication by connexin 31. Additionally, α-glycyrrhetinicacid did not effectively inhibit gap junctional intercellular communication formed by connexin 31. Pulse-chase assayrevealed that connexin 31 had a half-life of about 6 h. Moreover, Western blotting and fluorescent staining demonstratedthat in HeLa cells stably expressing connexin 31, the amount of connexin 31 was significantly increased after these cellswere treated with proteasomal or lysosomal inhibitors. These findings indicate that connexin 31 was rapidly renewed,and possibly degraded by both proteasomal and lysosomal pathways. | LiQiangHE FangCAI YuLIU MuJunLIU ZhiPingTAN QianPAN FaiYanFANG DeShengLIANG LingQianWU ZhiGaoLONG HePingDAI KunXIA JiaHuiXIA ZhuoHuaZHANG | 2005 | Cell Research2005，15，6： | 1 |
| 4 | Derivation of low flow distribution functions using copulas显示文摘 | YU Kunxia XIONG Lihua GOTTSCHALK L | 2014 | Journal of Hydrology2014，508，： | 1 |
| 5 | Identification of the Alternative Promoters of the KChIP4 Subfamily显示文摘The subfamily of voltage-dependent potassium (Kv) channel interacting protein 4 (KChlP4) is made up of the auxiliary interacting protein of voltage-dependent potassium channels. In this study, the structure of four splicing variants of the human KChIP4 gene was analyzed. Three of the four isoforms of the KChIP4 gene, KChIP4.1, KChIP4.2 and KChIP4.4, were amplified from mouse and human fetal brain tissues by reverse transcription-polymerase chain reaction and then identified. Based on the bioinformatics analysis of the genomic sequences of the gene, we cloned and characterized two promoter fragments from the KChIP4 gene. One was a 325 bp fragment upstream of the 5' end of the KChI.1 mRNA sequence and the other was an 818 bp fragment located immediately at the 5' end of the KChIP4.4 variant. Both of them can initiate the transcription of the reporter gene in HT1080 cells and Sprague-Dawley (SD) rat fetal brain neurons, and they contain C+G islands, except typical TATA boxes and CAAT boxes. This shows that the KChIP4 gene expression is regulated by an alternative promoter. | Xiao-YunDENG FangCAI KunXIA QianPAN Zhi-GaoLONG Ling-QianWU De-ShengLIANG He-PingDAI Zhuo-HuaZHANG Jia-HuiXIA | 2005 | Acta Biochimica et Biophysica Sinica2005，37，4： | 0 |
| 6 | An Efficient Causal Structure Learning Algorithm Based on Recursive Simultaneous Equations Model显示文摘 | YANG Jing AN Ning WANG Kunxia WANG Aiguo LI Lian | 2013 | Chinese Journal of Electronics2013，22，3： | 0 |
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