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Effects of urban grass coverage on rainfall-induced runoff in Xi'an loess region in China

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Water Science and Engineering 2017年第4期10卷 320-325页

作者： Jing Li, Zhan-bin Li Meng-jing guo Peng Li Sheng-dong Cheng State Key Laboratory Base of Eco-Hydraulic Engineering in Arid Areas Xi'an University of TechnologyXi'an 710048China

In this study, laboratory rainfall simulation experiments were conducted to investigate the regulatory effects of grass coverage on rainfallrunoff processes. A total of 80 grass blocks planted with well-grown manilagrass, together with their root systems, were sampled from an eastern suburban area of Xi'an City in the northwest arid area of China and sent to a laboratory for rainfall simulation experiments. The runoff and infiltration processes of a slope with different grass coverage ratios and vegetation patterns were analyzed. The results show that the runoff coefficient decreases with the increase of the grass coverage ratio, and the influence of grass coverage on the reduction of runoff shows a high degree of spatial variation. At a constant grass coverage ratio, as the area of grass coverage moves downward, the runoff coefficient, total runoff,and flood peak discharge gradually decrease, and the flood peak occurs later. With the increase of the grass coverage ratio, the flood peak discharge gradually decreases, and the flood peak occurs later as well. In conclusion, a high grass coverage ratio with the area of grass coverage located at the lower part of the slope will lead to satisfactory regulatory effects on rainfall-induced runoff.

关键词： Rainfall simulation Urban vegetation in arid area Rainfall-runoff process Regulatory effect Xi'an loess region

Performance Evaluation of Baseline-dependent Averaging Based on Full-scale SKA1-LOW Simulation

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Research in Astronomy and Astrophysics 2022年第4期22卷 153-159页

作者： qing-Wen Deng Feng Wang Hui Deng Ying Mei Jing Li Oleg Smirnov Shao-Guang guo Center for Astrophysics School of Physics and Materials ScienceGuangzhou UniversityGuangzhou 51006China Great Bay Center National Astronomical Data CenterGuangzhou510006China Department of Physics and Electronics Rhodes UniversityPO Box 94Makhanda6140South Africa Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai200030China

The Square Kilometre Array(SKA)is the largest radio interferometer under construction in the *** immense amount of visibility data poses a considerable challenge to the subsequent processing by the science data processor(SDP).Baseline dependent averaging(BDA),which reduces the amount of visibility data based on the baseline distribution of the radio interferometer,has become a focus of SKA SDP *** paper developed and implemented a full-featured BDA module based on Radio Astronomy Simulation,Calibration and Imaging Library(RASCIL).Simulated observations were then performed with RASCIL based on a full-scale SKA1-LOW *** performance of the BDA was systematically investigated and evaluated based on the simulated *** experimental results confirmed that the amount of visibility data is reduced by about 50%to 85%for different time intervals(Δt_(max)).In addition,differentΔt_(max)have a significant effect on the imaging *** smallerΔt_(max)is,the smaller the degradation of imaging quality.

关键词： instrumentation:radio interferometers methods:analytical mathematics techniques:astronomical simulations

Modified Cortex Mori Capsules improving the successful rate of functional filtering blebs after reclinical glaucoma filtering surgery

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World Journal of Clinical Cases 2019年第21期7卷 3436-3445页

作者： Jing Yu Li-Xin Qiu guo-Ping qing Bo-Wen Zhao Hui Wang Beijing Tongren Eye Center Laboratory of Ophthalmology and Visual Science in Beijing Beijing Tongren HospitalCapital Medical University

BACKGROUND The major reason for filtering bleb failure or scarring of the bleb site is due to excessive scarring after glaucoma filtration surgery in the *** Chinese medicine has preeminence in the prevention of fibrosis formation through the regulation of systemic circulation and improvement of the properties of the inflammatory cells in the *** To examine the clinical efficacy of using the Modified Cortex Mori Capsules(MCMC;Chinese name:Jiawei Sangbaipi Capsules)in the success rate of functional filtering blebs after glaucoma filtering surgery in clinical *** Sixty resurgery glaucoma patients were randomly divided into two groups:30 patients in surgery with the placebo group and 30 patients in surgery with the MCMC *** took either the placebo or the MCMC 2 wk before and after *** morphology and function filtering bleb,visual acuity,intraocular pressure,postoperative complications,the success rate of filtration surgery and clinical efficacy were *** Fifty patients completed the *** percentage of functional filtering blebs in the surgery plus MCMC group was 84%at 6 mo after surgery,which was higher than surgery plus placebo group(64%,P<0.05).The surgical success rate in the MCMC and placebo groups were 79%±8.3%and 57%±10.6%respectively(P<0.05).The visual acuity,intraocular pressure and the postoperative complications in the two groups had no significant *** Glaucoma filtering surgery while taking MCMC not only reduced excessive scar formation and increased the success rate of functional filtering blebs but also improved the success of glaucoma filtration operations.

关键词： Glaucoma Traditional Chinese medicine Modified Cortex Mori Capsules Jiawei Sangbaipi Capsules Filtering bleb Scar formation

大级别女子举重运动员孟苏平备战里约奥运会赛前六周训练安排研究

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贵州师范学院学报 2024年第5期40卷 53-60页

作者：陈亚东孟苏平李云卿吴贤风合肥师范学院体育学院安徽合肥230051 安徽省重竞技运动管理中心安徽合肥230051 安徽体育运动职业技术学院安徽合肥230051 安徽省体育科学技术研究所安徽合肥230051

将孟苏平备战第31届奥运会赛前举重训练安排进行总结,从而获取最真实最直观的备战奥运会的赛前训练数据。通过对孟苏平备战第31届奥运会赛前训练安排进行分析研究,可以使一线举重教练对高水平举重运动员,特别是女子举重运动员备战大赛... 详细信息

将孟苏平备战第31届奥运会赛前举重训练安排进行总结,从而获取最真实最直观的备战奥运会的赛前训练数据。通过对孟苏平备战第31届奥运会赛前训练安排进行分析研究,可以使一线举重教练对高水平举重运动员,特别是女子举重运动员备战大赛训练安排有直观全新的认识,有效地指导今后备战国内外举重大赛的赛前训练,进而为今后中国女子举重大级别运动员赛前备战训练提供理论借鉴。

关键词：女子举重运动员孟苏平赛前训练安排

东北地区秋季饲喂赖氨酸锌对湖羊种公羊血浆生化指标与精子质量的影响

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中国畜牧兽医 2024年第2期51卷 558-567页

作者：王赫川李天峰张涵宋宇伦冯赫泽魏姚程烨李用昕董莹莹尹国安郭庆崔卫国李井春黑龙江八一农垦大学动物科技学院大庆163319

[目的]试验旨在研究东北地区秋季饲喂赖氨酸锌对湖羊血浆生化指标与精子质量的影响。[方法]选择体况良好的1~2岁湖羊种公羊32只随机平均分为4组,分别补饲0、25、50、100 mg/d赖氨酸锌。试验于2022年8月至2022年10月在黑龙江伊春开展,平... 详细信息

[目的]试验旨在研究东北地区秋季饲喂赖氨酸锌对湖羊血浆生化指标与精子质量的影响。[方法]选择体况良好的1~2岁湖羊种公羊32只随机平均分为4组,分别补饲0、25、50、100 mg/d赖氨酸锌。试验于2022年8月至2022年10月在黑龙江伊春开展,平均气温10.3℃。试验预试期7 d,正试期56 d。分别于试验第28、42及56天采集湖羊颈静脉血,测定血浆睾酮、褪黑素、白细胞介素-2、白细胞介素-4、白细胞介素-6、白细胞介素-10、促肾上腺皮质激素和肿瘤坏死因子-α水平,以及血浆总抗氧化能力、过氧化氢酶、超氧化物歧化酶、谷胱甘肽过氧化物酶活性及丙二醛水平。采集湖羊精液测定精子活率、质膜完整率及畸形率。[结果]第28天时50 mg/d组湖羊褪黑素水平显著高于0及100 mg/d组(P<0.05),总抗氧化能力显著高于0 mg/d组(P<0.05),白细胞介素-4水平显著低于25 mg/d组(P<0.05),白细胞介素-10水平显著低于0 mg/d组(P<0.05)。第42天时50 mg/d组湖羊超氧化物歧化酶活性显著高于0 mg/d组(P<0.05),白细胞介素-4水平显著低于其他各组(P<0.05),促肾上腺皮质激素水平显著低于0及100 mg/d组(P<0.05)。第56天时50 mg/d组湖羊精子质膜完整率显著高于0 mg/d组(P<0.05),超氧化物歧化酶活性显著高于0 mg/d组(P<0.05),白细胞介素-4水平显著低于0及100 mg/d组(P<0.05)。[结论]补饲赖氨酸锌能够改善东北地区秋季湖羊种公羊血浆生殖激素水平、抗氧化能力、免疫指标水平与精子质量,建议补饲量为50 mg/d。

关键词：赖氨酸锌湖羊精子质量抗氧化免疫

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生物可渗透反应墙修复技术研究进展

绿色科技 2024年第16期26卷 182-187,192页

作者：张强潘超超孔殿超董献彬张勋张青安徽环境科技集团股份有限公司安徽合肥230088

生物可渗透反应墙(biological permeable reaction barrier,BPRB)是一种新兴的土壤地下水原位修复技术,目前已成为该领域研究热点方向之一,为进一步了解该技术研究及应用现状,对近年来相关研究进行了系统归纳,从BPRB技术类型、BPRB中微... 详细信息

生物可渗透反应墙(biological permeable reaction barrier,BPRB)是一种新兴的土壤地下水原位修复技术,目前已成为该领域研究热点方向之一,为进一步了解该技术研究及应用现状,对近年来相关研究进行了系统归纳,从BPRB技术类型、BPRB中微生物固定化方法、微生物强化方法,以及BPRB联合修复技术应用体系几个方面进行了详细分析,进而获得了如下主要结论:(1)混养型微生物修复体系的修复效果远高于异养型与自养型;(2)载体吸附法与材料包埋法固定化微生物效果最好;(3)提高生物刺激剂效果的同时降低成本是目前研究的重点;(4)微生物修复与其他多种修复技术协同作用效果较好,具备工程应用潜能。现阶段对于生物可渗透反应墙的研究多集中于微生物修复效率的提升,而对于微生物在实际场地中的反应活性及作用机制缺乏研究,建议下一步从构建环境适应性更强的微生物修复体系入手,从而更好地推动BPBR技术的工程化应用。

关键词：土壤地下水生物可渗透反应墙固定化技术生物刺激剂

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Dynamics of microbial diversity during the composting of agricultural straw

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Journal of Integrative Agriculture 2021年第5期20卷 1121-1136页

作者： CHANG Hui-qing ZHU Xiao-hui WU Jie guo Da-yong ZHANG Lian-he FENG Yao Henan University of Science and Technology Luoyang 471023P.R.China Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences/Key Laboratory of Plant Nutrition and FertilizerMinistry of Agriculture and Rural AffairsBeijing 100081P.R.China

The dynamic changes in microbial diversity during the aerobic composting of agricultural crop straw with additives were evaluated using high-throughput sequencing at four phases of composting(mesophilic,thermophilic,cooling and maturation phases).In addition,the physicochemical parameters of the composting system were determined in this *** fermentation time of the thermophilic period was prolonged with the addition of urea or urea combined with a microbial *** ratio of C/N and germination index variation indicated that the additives were favorable for composting,because the additives directly changed the physicochemical properties of the compost and had effects on the diversity and abundance of bacteria and *** abundance of operational taxonomic units(OTUs),diversity index(Shannon)and richness index(Chao1)of fungi and bacteria were found to significantly increase when urea+microbial agents were added to straw in the thermophilic *** relative abundance of the predominant bacteria and fungi at the phylum and genus levels differed during different composting *** abundance of the phyla Firmicutes and Proteobacteria declined in the order of treatments SNW>SN>S(S is straw only compost;SN is straw+5 kg t^(–1) urea compost;and SNW is straw+5 kg t^(–1) urea+1 kg t^(–1) microbial agent compost)in the thermophilic *** abundance of the genera Staphylococcus,Bacillus and Thermobifida followed the same order in the mesophilic *** accounted for more than 92%of the total fungal *** the progression of the composting process,the abundance of Ascomycota decreased *** abundance of Ascomycota followed the order of S>SN>SNW during the thermophilic *** abundance of Aspergillus accounted for 4–59%of the total abundance of fungi and increased during the first two sampling *** abundance followed the order of SNW>SN>***,principal component analysis(PCA)revealed that the community compositi

关键词： crop straws microbial diversity community composition dynamic characteristics high-throughput sequencing

Effects of salvianolic acid B on liver mitochondria of rats with nonalcoholic steatohepatitis

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World Journal of Gastroenterology 2015年第35期21卷 10104-10112页

作者： Ying-Chun Wang Wei-Zong Kong qing-Mei Jin Juan Chen Lei dong Department of Gastroenterology the Second Affiliated HospitalXi’an Jiaotong University Department of Gastroenterology Affiliated Zhongshan Hospital of Dalian University

AIM: To investigate the effects of salvianolic acid B(Sal B) on the morphological characteristics and functions of liver mitochondria of rats with nonalcoholic steatohepatitis(NASH).METHODS: A total of 60 male Sprague-Dawley rats were randomly divided into three groups:(1) a normal group fed a normal diet;(2) an NASH model group; and(3) a Sal B-treated group fed a high-fat diet. Two rats from each group were executed at the end of the 12 th week to detect pathological changes. The rats in the Sal B-treated group were gavaged with 20 m L/kg Sal B(1 mg/m L) daily. The model group received an equal volume of distilled water as a control. At the end of the 24 th weekend, the remaining rats were executed. Serum biochemical parameters and liver histological characteristics were observed. Malondialdehyde(MDA) and superoxide dismutase(SOD) in the liver were determined. Protein expression of Cyt C and caspase-3 was determined by immunohistochemistry. The m RNA transcripts of mitofusin-2(Mfn2) and NF-κB in the liver tissue were detected by real-time PCR. Mitochondrial membrane potential was detected using a fluorescence spectrophotometer. Mitochondrial respiratory function was detected using a Clark oxygen ***: The model group showed significantly higher ALT, AST, TG, TC and MDA but significantly lower SOD than the normal group. In the model group,the histological characteristics of inflammation and steatosis were also evident; mitochondrial swelling and crest were shortened or even disappeared. Cyt C(18.46 ± 1.21 vs 60.01 ± 3.43, P < 0.01) and caspase-3 protein expression(30.26 ± 2.56 vs 83.31 ± 5.12, P < 0.01) increased significantly. The m RNA expression of NF-κB increased(0.81 ± 0.02 vs 0.91 ± 0.03, P < 0.05), whereas the m RNA expression of Mfn2 decreased(1.65 ± 0.31 vs 0.83 ± 0.16, P < 0.05). Mitochondrial membrane potential also decreased and breathing of rats was weakened. Steatosis and inflammation degrees in the treatment group were significantly allev

关键词： Nonalcoholic steatohepatitis Salvianolic acid B Ap

Magnetic resonance imaging-radiomics evaluation of response to chemotherapy for synchronous liver metastasis of colorectal cancer

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World Journal of Gastroenterology 2021年第38期27卷 6465-6475页

作者： Yan-qing Ma Yang Wen Hong Liang Jian-guo Zhong Pei-Pei Pang Department of Radiology Zhejiang Provincial People’s HospitalAffiliated People’s Hospital of Hangzhou Medical CollegeHangzhou 310000Zhejiang ProvinceChina Department of Radiology Hangzhou Medical CollegeHangzhou 310000Zhejiang ProvinceChina Department of Pharmaceuticals Diagnosis GE HealthcareHangzhou 310000Zhejiang ProvinceChina

BACKGROUND Synchronous liver metastasis(SLM)is an indicator of poor prognosis for colorectal cancer(CRC).Nearly 50%of CRC patients develop hepatic metastasis,with 15%-25%of them presenting with *** evaluation of SLM in CRC is crucial for precise and personalized *** is beneficial to detect its response to chemotherapy and choose an optimal treatment *** To construct prediction models based on magnetic resonance imaging(MRI)-radiomics and clinical parameters to evaluate the chemotherapy response in SLM of *** A total of 102 CRC patients with 223 SLM lesions were identified and divided into disease response(DR)and disease non-response(non-DR)to *** standardizing the MRI images,the volume of interest was delineated and radiomics features were *** MRI-radiomics logistic model was constructed after methods of variance/Mann-Whitney U test,correlation analysis,and least absolute shrinkage and selection operator in feature *** radiomics score was *** receiver operating characteristics curves by the DeLong test were analyzed with MedCalc software to compare the validity of all ***,the area under curves(AUCs)of DWI,T2WI,and portal phase of contrast-enhanced sequences radiomics model(Ra-DWI,Ra-T2WI,and Ra-portal phase of contrast-enhanced sequences)were *** radiomicsclinical nomogram was generated by combining radiomics features and clinical characteristics of CA19-9 and clinical N *** The AUCs of the MRI-radiomics model were 0.733 and 0.753 for the training(156 lesions with 68 non-DR and 88 DR)and the validation(67 lesions with 29 non-DR and 38 DR)set,***,the AUCs of the training and the validation set of Ra-DWI were higher than those of Ra-T2WI and Ra-portal phase of contrast-enhanced sequences(training set:0.652 vs 0.628 and 0.633,validation set:0.661 vs 0.575 and 0.543).After chemotherapy,the top four of twelve deltaradiomics features of R

关键词： Radiomics Synchronous liver metastasis Colorectal cancer Chemotherapy Magnetic resonance Nomogram