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八棱海棠胚再生体系的建立

分子植物育种 2024年第3期22卷 849-858页

作者：雷富臣封明军豆静王新建塔里木大学植物科学学院南疆特色果树高效优质栽培与深加工技术国家地方联合工程实验室阿拉尔843300

为建立高效的八棱海棠胚再生体系,本研究检测和分析了八棱海棠种子消毒处理、胚诱导、组培苗增殖、生根以及叶片愈伤组织诱导的影响因素。结果表明:最优的消毒处理剂为,剥除种皮前:75%乙醇/30s+10%NaClO_(2)/10 min,剥除种皮后:10%NaClO... 详细信息

为建立高效的八棱海棠胚再生体系,本研究检测和分析了八棱海棠种子消毒处理、胚诱导、组培苗增殖、生根以及叶片愈伤组织诱导的影响因素。结果表明:最优的消毒处理剂为,剥除种皮前:75%乙醇/30s+10%NaClO_(2)/10 min,剥除种皮后:10%NaClO_(2)/1 min,可将种子的污染率降至0,且发芽率最高为93%;组培苗最优增殖培养基配比为MS+2.0 mg/L 6-BA+0.1 mg/L NAA,增殖系数为4.11,苗高为2.57 cm;组培苗最适生根培养基配方为1/2MS+0.7 mg/LIBA+0.5 mg/LNAA,组培苗经培养后其生根率达到100%,平均根长为7.97 cm,主根数为8.33,根系表面积为54.71 cm^(2),根尖数为572.27,平均株高3.42 cm;叶片愈伤组织诱导最适培养基配比为MS+0.1 mg/L TDZ+1.0 mg/L NAA和MS+2.5 mg/L 2,4-D,诱导率为94.70%和91.33%。本研究结果为八棱海棠的快速繁殖提供参考。

关键词：八棱海棠胚组织培养快速繁殖

Liouville theorems for an integral system with Poisson kernel on the upper half space

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Science China Mathematics 2016年第7期59卷 1367-1382页

作者： dou jing Bo ZHANG Xiang School of Statistics Xi'an University of Finance and Economics Department of Statistics The Chinese University of Hong Kong School of Mathematics and Computational Science Sun Yat-sen University

We investigate the Liouville theorem for an integral system with Poisson kernel on the upper half space R+n,{u（x） =2/（nωn）∫?R+n（xnf（v（y）））/（|x- y|n）dy, x ∈R+n,v（y） =2/（nωn）∫R+n（xng（u（x）））/（|x- y|n）dx, y ∈?R+n,where n 3, ωn is the volume of the unit ball in Rn. This integral system arises from the Euler-Lagrange equation corresponding to an integral inequality on the upper half space established by Hang et al.（2008）.With natural structure conditions on f and g, we classify the positive solutions of the above system based on the method of moving spheres in integral form and the inequality mentioned above.

关键词： Poisson kernel method of moving spheres regularity Kelvin transformation Liouville theorem

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患者检验结果缺失的根本原因分析

现代医院管理 2024年第4期22卷 37-39页

作者：宋景晨盖媛媛窦婧婧北京医院/国家老年医学中心/中国医学科学院老年医学研究院北京市100730

对医院发生的患者检验结果缺失的事件进行分析,成立RCA小组进行调研并确认问题;运用基于时间的流程图梳理事件,运用问卷和鱼骨图法分析事件发生原因,使用查检表和“5W1H”制定整改对策,进行流程优化、精准培训、优化检验项目和升级信息... 详细信息

对医院发生的患者检验结果缺失的事件进行分析,成立RCA小组进行调研并确认问题;运用基于时间的流程图梳理事件,运用问卷和鱼骨图法分析事件发生原因,使用查检表和“5W1H”制定整改对策,进行流程优化、精准培训、优化检验项目和升级信息系统等,加强各部门的沟通合作、优化专业工作流程,全面构建医院安全文化,是可以避免此类事件发生的有效手段。

关键词：结果缺失根本原因分析患者安全流程优化

Classification of Positive Solutions to a Divergent Equation on the Upper Half Space

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Acta Mathematica Sinica,English Series 2022年第3期38卷 499-509页

作者： Jin Ge YAO jing Bo dou School of Mathematics and Statistics Shaanxi Normal UniversityXi’an710119P.R.China

In this paper we classify the positive solutions of the divergent equation with Neumann boundary on the upper half space{-div(t^(α)∇u)=t^(β)f(u),(y,t)∈R^(n+1)_(+),lim t→0^(+)t^(α)■u/■t=0 by the method of moving spheres and Kelvin transformations,where n≥1,α>0,β>−1,n−1/n+1β≤α<β+2,and f:(0,∞)→(0,∞)is non-negative continuous function satisfying some *** equation arises from a weighed Sobolev inequality involving divergent operator div(t^(α)∇u)on the upper half space.

关键词： Divergent operator Liouville theorem Neumann boundary method of moving spheres Kelvin transformation

Improved Hardy–Littlewood–Sobolev Inequality on S^(n)under Constraints

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Acta Mathematica Sinica,English Series 2023年第11期39卷 2149-2163页

作者： Yun Yun HU jing Bo dou School of Mathematics and Statistics Shaanxi Normal UniversityXi’an 710119P.R.China

In this paper,we establish an improved Hardy–Littlewood–Sobolev inequality on Snunder higher-order moments ***,by constructing precise test functions,using improved Hardy–Littlewood–Sobolev inequality on S^(n),we show such inequality is almost optimal in critical *** an application,we give a simpler proof of the existence of the maximizer for conformal Hardy–Littlewood–Sobolev inequality.

关键词： Hardy–Littlewood–Sobolev inequality higher-order moments constraint concentration compactness principle almost optimal

Liouville Type Theorems for a System of Integral Equations on Upper Half Space

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Acta Mathematica Sinica,English Series 2014年第2期30卷 261-276页

作者： Su Fang TANG jing Bo dou School of Statistics Xi’an University of Finance and Economics

In this paper,we consider the following system of integral equations on upper half space {u（x） = ∫Rn ＋（1/｜x-y｜n-α-1/｜-y｜n-α） λ1up1（y）＋ μ1vp2（y）＋ β1up3（y）vp4（y） dy;v（x） = ∫Rn ＋（1/｜x-y｜n-α-1/｜-y｜n-α）（λ2uq1（y）＋ μ2vq2（y）＋ β2uq3（y）vq4（y） dy,where Rn ＋ = {x =（x1,x2,...,xn） ∈ Rn｜xn〉 0}, =（x1,x2,...,xn-1,-xn） is the reflection of the point x about the hyperplane xn= 0,0 〈 α 〈 n,λi,μi,βi≥ 0（i = 1,2） are constants,pi≥ 0 and qi≥ 0（i = 1,2,3,4）.We prove the nonexistence of positive solutions to the above system with critical and subcritical exponents via moving sphere method.

关键词： System of integral equations Liouville type theorem moving spheres method regularity

Highly permeable reverse osmosis membranes incorporated with hydrophilic polymers of intrinsic microporosity via interfacial polymerization

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Chinese Journal of Chemical Engineering 2022年第5期35卷 194-202页

作者： jing dou Shuo Han Saisai Lin Zhikan Yao Lian Hou Lin Zhang Engineering Research Center of Membrane and Water Treatment of MOE College of Chemical&Biological EngineeringZhejiang UniversityHangzhou 310027China Research Institute of Ningbo Zhejiang UniversityNingbo 315100China Xi’an High-Tech Institute Xi’an 710025China

Enhancing the water permeation while maintaining high salt rejection of existing reverse osmosis(RO)membranes remains a considerable ***,we proposed to introduce polymer of intrinsic microporosity,PIM-1,into the selective layer of reverse osmosis membranes to break the trade-off effect between permeability and selectivity.A water-soluble a-LPIM-1 of low-molecular-weight and hydroxyl terminals was *** designed characteristics endowed it with high solubility and *** it was mixed with m-phenylenediamine and together served as aqueous monomer to react with organic monomer of trimesoyl chloride via interfacial *** characterization results exhibited that more“nodule”rather than“leaf”structure formed on RO membrane surface,which indicated that the introduction of the high free-volume of a-LPIM-1 with three dimensional twisted and folded structure into the selective layer effectively caused the frustrated packing between polymer *** virtue of this effect,even with reduced surface roughness and unchanged layer thickness,the water permeability of prepared reverse osmosis membranes increased 2.1 times to 62.8 L·m^(-2)·h^(-1) with acceptable Na Cl rejection of 97.6%.This attempt developed a new strategy to break the trade-off effect faced by traditional polyamide reverse osmosis membranes.

关键词： PIM-1 Intrinsic microporosity Reverse osmosis Interfacial polymerization Trade-off

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中华肝脏病杂志 2024年第4期32卷 346-353页

作者：刘云霄郭峰牛丽娜张冰窦婧徐强宁忠慧王晓忠新疆医科大学第四临床医学院乌鲁木齐下830000 新疆医科大学附属中医医院肝病科乌鲁木齐830000

目的探讨从非酒精性脂肪性肝病(NAFLD)到代谢功能障碍相关脂肪性肝病(MASLD),3次脂肪肝更名下患者的临床特征,阐明其临床应用价值。方法选取2020年1月至2023年9月在新疆医科大学附属中医医院肝病科住院,分别符合NAFLD、代谢相关脂肪性肝... 详细信息

目的探讨从非酒精性脂肪性肝病(NAFLD)到代谢功能障碍相关脂肪性肝病(MASLD),3次脂肪肝更名下患者的临床特征,阐明其临床应用价值。方法选取2020年1月至2023年9月在新疆医科大学附属中医医院肝病科住院,分别符合NAFLD、代谢相关脂肪性肝病(MAFLD)、MASLD诊断的患者为研究对象,比较3组患者间各临床指标的差异,主要包括一般资料(年龄、性别、体质量指数、既往史等)、血清学指标(肝肾功能、血脂、血糖、凝血功能等)、无创肝纤维化指标、脂肪衰减参数等。计量资料采用ANOVA方差分析、秩和检验,计数资料采用χ^(2)检验。结果在536例脂肪肝患者中,其中NAFLD、MAFLD、MASLD的患病率分别为64.0%、93.7%、100%,其中有318例(59.3%)同时满足3种脂肪肝命名。NAFLD、MAFLD、MASLD人群中,男性占比依次为30.9%、55.8%、53.9%;有饮酒史的占比依次为0、36.7%、36.0%;有吸烟史的占比依次为7.0%、31.9%、30.6%;体质量指数依次为(27.66±3.97)、(28.33±3.63)、(27.90±3.89)kg/m^(2);γ-谷氨酰转移酶依次为26.6(18.0,47.0)U/L、31.0(20.0,53.0)U/L、30.8(19.8,30.8)U/L;高密度脂蛋白胆固醇依次为1.07(0.90,1.23)mmol/L、1.02(0.86,1.19)mmol/L、1.03(0.87,1.21)mmol/L;尿酸依次为(322.98±84.51)μmol/L、(346.57±89.49)μmol/L、(344.89±89.67)μmol/L;肌酐依次为69.6(62.9,79.0)μmol/L、73.0(65.0,83.5)μmol/L、73.0(65.0,83.0)μmol/L;肥胖的占比依次为74.3%、81.7%、76.5%,差异均有统计学意义(P值均<0.05)。结论与NAFLD人群相比,MAFLD、MASLD人群以男性居多,形体多肥胖,且多有吸烟和饮酒史,γ-谷氨酰转移酶、尿酸、肌酐的水平稍高和高密度脂蛋白胆固醇的水平较低。MASLD的提出是在NAFLD、MAFLD基础上的继承与发展,再次强调代谢因素在脂肪肝中的重要地位。

关键词：脂肪肝代谢相关脂肪性肝病代谢功能障碍相关脂肪性肝病临床特征差异

New C(21) steroidal glycoside from Cynanchum paniculatum

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Chinese Chemical Letters 2007年第3期18卷 300-302页

作者： jing dou Ping Li Zhi Ming Bi Jian Liang Zhou Ministry of Education Key Laboratory of Modern Chinese Medicines Department of Pharmacognosy China Pharmaceutical University Nanjing 210038 China

A new C21 steroidal glycoside, neocynapanogenin F 3-O-β-D-thevetoside 1, as well as its known aglycone neocynapanogenin F 2, which have an aberrant 13, 14：14, 15-disecopregnane-type skeleton were isolated from the root of Cynanchum paniculatum. Their structures were elucidated on the basis of spectroscopic data analysis. These compounds showed certain cytotoxic activities in vitro.

关键词： Neocynapanogenin F 3-O-β-D-thevetoside Neocynapanogenin F Cynanchum paniculatum