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Variations of soil organic carbon fractions in response to conservative vegetation successions on the Loess Plateau of China

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International Soil and Water Conservation Research 2023年第3期11卷 561-571页

作者： Muhammad imran Ghani Jing Wang Peng Li shamina imran pathan Tanveer Ali Sial Rahul Datta Ali Mokhtar Esmat F.Ali Jörg Rinklebe Sabry MShaheen Mengyun Liu Hamada Abdelrahman College of Natural Resources and Environment Northwest A&F UniversityYangling Shaanxi712100China Scientific Laboratory of Heyang Agricultural Environment and Farmland Cultivation Ministry of Agriculture and Rural AffairsNorthwest A&F UniversityHeyang Shaanxi714000China Dipartimento di Scienze e Tecnologie Agrarie AlimentariAmbientali e ForestaliUniversita degli Studi di FirenzePiazzale delle Cascine 2850144FlorenceItaly Department of Soil Science Sindh Agriculture University TandojamSindh70060Pakistan Department of Geology and Pedology Faculty of Forestry and Wood TechnologyMendel University in BrnoZemedelska 361300BrnoCzech Republic Cairo University Faculty of AgricultureDepartment of Agricultural EngineeringGizaEgypt Department of Biology College of ScienceTaif UniversityP.O.Box 11099Taif21944Saudi Arabia University of Wuppertal School of Architecture and Civil EngineeringInstitute of Foundation EngineeringWater-and Waste-ManagementLaboratory of Soil-and Groundwater-ManagementPauluskirchstraβe 742285WuppertalGermany International Research Centre of Nanotechnology for Himalayan Sustainability(IRCNHS) Shoolini UniversitySolan173212 Himachal PradeshIndia King Abdulaziz University Faculty of MeteorologyEnvironmentand Arid Land AgricultureDepartment of Arid Land Agriculture21589JeddahSaudi Arabia University of Kafrelsheikh Faculty of AgricultureDepartment of Soil and Water Sciences33516Kafr El-SheikhEgypt Cairo University Faculty of AgricultureSoil Science DepartmentGiza12613Egypt

Land use changes profoundly affect the equilibrium of soil organic carbon(soC)sequestration and greenhouse gas *** the current global climatic changes,it is vital to understand the influence of ecological restoration and conservation management on the dynamics of soC under different land uses,especially in erosion-endangered Loess ***,we investigated changes in soc through a suit of labile fractions,namely:light fraction organic C(LFOC),heavy fraction organic C(HFOC),coarse particulate organic C(CPOC),fine particulate organic C(FPOC),and dissolved organic C(DOC),from two forests i.e.,Robinia pseudoacacia(RP)and Platycladus orientalis(PO),with different ages,in comparison with farmland(FL).The SOC and STN contents significantly increased over 42 years in the RP forest where the contents of CPOC and FPOC were significantly higher than in the ***,total SOC and its labile fractions,in the studied land use types,significantly correlated with soil CacO3,pH,and STN contents,indicating their key roles in SoC *** results reported here from different vegetation with different ages provide a better understanding of sOC and STN alterations at different stages of vegetation *** findings suggest that long-term natural vegetation restoration could be an effective approach for SoC sequestration and soil conservation on the Loess soil.

关键词： Vegetation restoration Organic carboncontent Labile organic carbon Carbonate Soil conservation

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三维断裂问题中的位移不连续方法

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湘潭大学学报（自然科学版） 2020年第4期42卷 69-93页

作者： Zvyaguin AV Smirnov NN Luzhin AA shamina AA 国立莫斯科罗蒙诺索夫大学俄罗斯莫斯科119992 俄罗斯科学院联邦科学中心系统分析科学研究所俄罗斯莫斯科117218

该研究将位移不连续方法引入三维空间中对边界元数值方法进行改进,旨在有效地减少计算过程中三维空间单元数.该方法通过对裂缝表面进行基础单元划分来表征弹性介质的非连续特征,并有效地降低了计算规模.此外,该文还给出了一个基于双层... 详细信息

该研究将位移不连续方法引入三维空间中对边界元数值方法进行改进,旨在有效地减少计算过程中三维空间单元数.该方法通过对裂缝表面进行基础单元划分来表征弹性介质的非连续特征,并有效地降低了计算规模.此外,该文还给出了一个基于双层位势的新基本解.与此同时,可认为该方法能有效地模拟水力裂缝扩展及其与天然断层之间的相互作用效应.

关键词：三维空间弹性介质裂缝边界单元法位移不连续方法

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The Usefulness of Zhukovsky Double Balloon in Obstetric Hemorrhage

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Maternal-Fetal Medicine 2019年第1期1卷 10-17页

作者： Sergey V.Barinov Irina V.Medyannikova Anna V.Borisova Yulia I.Tyrskaya Irina V.Savelieva Inna V.shamina Oksana V.Lazareva Tatyana V.Kadtsyna The Second Department of Obstetrics and Gynaecology Federal State Budget Institution of HigherProfessional EducationOmsk State Medical Universitythe Russian Ministry of HealthcareOmsk644043Russia Department of Obstetrics and Gynaecology Federal State Budget Institution ofHigher EducationPeoples'Friendship Universitythe Russian Ministry of HealthcareMoscow117198Russia

Objective:To evaluate the effectiveness of the use of a modified Zhukovsky double(vaginal and uterine)balloon to improve the results of treatment in women with obstetric ***:We conducted an observational controlled study including 701 puerperas,which were divided into two groups:The main group consisted of 508 women,who underwent a combined management,that is,traditional(transfusion of fresh frozen plasma,erythrocyte mass,uterotonics,hemostatic agents),surgical hemostasis in cases of caesarean section,and insertion of a double Zhukovsky balloon;while the comparison group included 193 patients,who were managed *** main group and the comparison group were divided into subgroups according to the main etiology of obstetric hemorrhage:ⅠA andⅠB-postpartum;ⅡA andⅡB-placenta accreta;ⅢA andⅢB-postpartum ***:The most frequent causes of massive obstetric hemorrhage were atony of the uterus(39.2%),placenta previa(29.1%),and placental abruption(11.5%).Of the 508 balloon insertions,345(70.7%)were inserted for hemorrhage during cesarean section and 148(29.3%)for obstetric hemorrhage after spontaneous *** the obstetric hemorrhage at caesarean section,lower segment bleeding prevailed(78.1%),caused mainly by placenta previa,placenta accreta,placental abruption,polyhydramnios,and uterine scar *** management,including surgical hemostasis and insertion of vaginal and uterine balloon of Zhukovsky,reduced blood loss by 1.5 times and the number of hysterectomies by 6.72 times compared to ***:The use of a modified Zhukovsky double balloon in the management of obstetric hemorrhage may reduce the number of hysterectomies and the amount of blood loss.

关键词： Obstetric hemorrhage Placenta previa Accrete Vaginal wall rupture Uterine ligation Hypotonic hemorrhage

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