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An Effective Approach to Determine an Initial Basic Feasible Solution: A TOCM-MEDM Approach 被引量:1
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作者 Md. Munir Hossain Mollah Mesbahuddin Ahmed +1 位作者 Md. Amirul Islam Shirajul Islam Ukil 《Open Journal of Optimization》 2020年第2期27-37,共11页
Transportation of products from sources to destinations with minimal total cost plays an important role in logistics and supply chain management. In this article, a new and effective algorithm is introduced for findin... Transportation of products from sources to destinations with minimal total cost plays an important role in logistics and supply chain management. In this article, a new and effective algorithm is introduced for finding an initial basic feasible solution of a balanced transportation problem. Number of numerical illustration is introduced and optimality of the result is also checked. Comparison of findings obtained by the new heuristic and the existing heuristics show that the method presented herein gives a better result. 展开更多
关键词 Initial basic Feasible solution Total Opportunity Cost Matrix Pointer Cost Optimum solution
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A Comparative Study of Initial Basic Feasible Solution by a Least Cost Mean Method (LCMM) of Transportation Problem 被引量:1
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作者 Md. Munir Hossain Mollah Mesbahuddin Ahmed 《American Journal of Operations Research》 2020年第4期122-131,共10页
Transportation Problems (TP), as is known, are a basic network problem which can be formulated as a Linear Programming Problem (LPP). Transportation networks are built up in order to save transportation cost. In the s... Transportation Problems (TP), as is known, are a basic network problem which can be formulated as a Linear Programming Problem (LPP). Transportation networks are built up in order to save transportation cost. In the solution procedure of a TP, finding an Initial Basic Feasible Solution (IBFS) is necessary to obtain the optimal solution. Optimality gives us the optimal route that prompts either most extreme benefit or least aggregate cost whichever is required. In this research paper, a new method named Least Cost Mean Method is proposed to obtain a better IBFS where row penalty and column penalty is brought out by the mean of lowest and next lowest cost of each row and each column of the cost matrix. The method is illustrated with numerical examples. To verify the performance of the proposed method, a comparative study is also carried out and observed that it is computationally easier and yielding comparatively better solution. 展开更多
关键词 Initial basic Feasible solution Optimum solution Penalty Cost
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Analytical solution of basic equations set of atmospheric motion
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作者 施惟慧 沈春 王曰朋 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2007年第3期385-394,共10页
On condition that the basic equations set of atmospheric motion possesses the best stability in the smooth function classes, the structure of solution space for local analytical solution is discussed, by which the thi... On condition that the basic equations set of atmospheric motion possesses the best stability in the smooth function classes, the structure of solution space for local analytical solution is discussed, by which the third-class initial value problem with typ- icality and application is analyzed. The calculational method and concrete expressions of analytical solution about the well-posed initial value problem of the third-kind are given in the analytic function classes. Near an appointed point, the relevant theoretical and computational problems about analytical solution of initial value problem are solved completely in the meaning of local solution. Moreover, for other type ofproblems for determining solution, the computational method and process of their stable analytical solution can be obtained in a similar way given in this paper. 展开更多
关键词 basic equations set of atmospheric motion structure of solution space analytical solution
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New Procedure of Finding an Initial Basic Feasible Solution of the Time Minimizing Transportation Problems
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作者 Mollah Mesbahuddin Ahmed Md. Amirul Islam +2 位作者 Momotaz Katun Sabiha Yesmin Md. Sharif Uddin 《Open Journal of Applied Sciences》 2015年第10期634-640,共7页
Minimization of transportation time is a great concern of the transportation problems like the cost minimizing transportation problems. In this writing, a transportation algorithm is developed and applied to obtain an... Minimization of transportation time is a great concern of the transportation problems like the cost minimizing transportation problems. In this writing, a transportation algorithm is developed and applied to obtain an Initial Basic Feasible Solution (IBFS) of transportation problems in minimizing transportation time. The developed method has also been illustrated numerically to test the efficiency of the method where it is observed that the proposed method yields a better result. 展开更多
关键词 TRANSPORTATION PROBLEM INITIAL basic Feasible solution Minimizing TRANSPORTATION TIME
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New Approach to Find Initial Basic Feasible Solution (IBFS) for Optimal Solution in Transportation Problem
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作者 Shubham Raval 《Open Journal of Applied Sciences》 CAS 2023年第2期207-211,共5页
Minimizing transportation time and getting optimal solutions are always considered as important factors while solving transportation problem. This paper shows a new approach for finding initial basic solution for tran... Minimizing transportation time and getting optimal solutions are always considered as important factors while solving transportation problem. This paper shows a new approach for finding initial basic solution for transportation problem which reduces cost of transportation more than any transportation method such as LCM, northwest, Vogel’s approximation and so on. This method has been illustrated by taking an example;afterwards, it compares basic initial feasible solution with other methods IBF and optimal dictate solutions such as MODI and Steppingstone method. 展开更多
关键词 Transportation Problem New Approach for Transportation Problem Initial basic Feasible solution Minimizing Transportation Time
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Solution with Singularity of Order One for Singular Integral Equation with Hilbert Kernal 被引量:6
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作者 Zhong Shou-guo Chen Jing-song 《Wuhan University Journal of Natural Sciences》 CAS 2004年第1期6-12,共7页
The basic sets of solutions in classH(orH*)for the characteristic equation and its adjoint equation with Hilbert kernel are given respectively.Thus the expressions of solutions and its solvable conditions are simplifi... The basic sets of solutions in classH(orH*)for the characteristic equation and its adjoint equation with Hilbert kernel are given respectively.Thus the expressions of solutions and its solvable conditions are simplified.On this basis the solutions and the solvable conditions in classH_(1)as well as the generalized Noether theorem for the complete equation are obtained. 展开更多
关键词 Hilbert kernel solution with singularity of order one basic set of solutions Noether theorem characteristic equation and its adjoint equation
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A New Understanding on the Problem That the Quintic Equation Has No Radical Solutions
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作者 Xiaochun Mei 《Advances in Pure Mathematics》 2020年第9期508-539,共32页
It is proved in this paper that Abel’s and Galois’s proofs that the quintic equations have no radical solutions are invalid. Due to Abel’s and Galois’s work about two hundred years ago, it was generally accepted t... It is proved in this paper that Abel’s and Galois’s proofs that the quintic equations have no radical solutions are invalid. Due to Abel’s and Galois’s work about two hundred years ago, it was generally accepted that general quintic equations had no radical solutions. However, Tang Jianer <i><span style="font-family:Verdana;font-size:12px;">et</span></i><i><span style="font-size:12px;font-family:Verdana;"> al</span><span style="font-size:12px;font-family:Verdana;">.</span></i><span style="font-size:10pt;font-family:;" "=""><span style="font-family:Verdana;font-size:12px;"> recently prove that there are radical solutions for some quintic equations with special forms. The theories of Abel and Galois cannot explain these results. On the other hand, Gauss </span><i><span style="font-family:Verdana;font-size:12px;">et</span></i></span><i><span style="font-size:12px;font-family:Verdana;"> al</span><span style="font-size:12px;font-family:Verdana;">.</span></i><span style="font-size:10pt;font-family:;" "=""><span style="font-family:Verdana;font-size:12px;"> proved the fundamental theorem of algebra. The theorem declared that there were </span><i><span style="font-family:Verdana;font-size:12px;">n</span></i><span style="font-family:Verdana;font-size:12px;"> solutions for the </span><i><span style="font-family:Verdana;font-size:12px;">n</span></i><span style="font-family:Verdana;font-size:12px;"> degree equations, including the radical and non-radical solutions. The theories of Abel and Galois contradicted with the fundamental theorem of algebra. Due to the reasons above, the proofs of Abel and Galois should be re-examined and re-evaluated. The author carefully analyzed the Abel’s original paper and found some serious mistakes. In order to prove that the general solution of algebraic equation</span></span><span style="font-size:10pt;font-family:;" "=""> </span><span style="font-size:12px;font-family:Verdana;">he proposed was effective for the cubic equation, Abel took the known solutions of cubic equation as a premise to calculate the parameters of his equation. Therefore, Abel’s proof is a logical circular argument and invalid. Besides, Abel confused the variables with the coefficients (constants) of algebraic equations. An expansion with 14 terms was written as 7 terms, 7 terms were missing.</span><span style="font-size:10pt;font-family:;" "=""> </span><span style="font-size:12px;font-family:Verdana;">We prefer to consider Galois’s theory as a hypothesis rather than a proof. Based on that permutation group </span><i><span style="font-size:12px;font-family:Verdana;">S</span></i><sub><span style="font-size:12px;font-family:Verdana;">5</span></sub><span style="font-size:12px;font-family:Verdana;"> had no true normal subgroup, Galois concluded that the quintic equations had no radical solutions, but these two problems had no inevitable logic connection actually. In order to prove the effectiveness of radical extension group of automorphism mapping for the cubic and quartic equations, in the Galois’s theory, some algebraic relations among the roots of equations were used to replace the root itself. This violated the original definition of automorphism mapping group, led to the confusion of concepts and arbitrariness. For the general cubic and quartic algebraic equations, the actual solving processes do not satisfy the tower structure of Galois’s solvable group. The resolvents of cubic and quartic equations are proved to have no symmetries of Galois’s soluble group actually. It is invalid to use the solvable group theory to judge whether the high degree equation has a radical solution. The conclusion of this paper is that there is only the </span><i><span style="font-size:10.0pt;font-family:;" "=""><span style="font-family:Verdana;font-size:12px;">S</span><sub><span style="font-family:Verdana;font-size:12px;">n</span></sub></span></i><span style="font-size:10pt;font-family:;" "=""><span style="font-family:Verdana;font-size:12px;"> symmetry for the </span><i><span style="font-family:Verdana;font-size:12px;">n</span></i><span style="font-family:Verdana;font-size:12px;"> degree algebraic equations. The symmetry of Galois’s solvable group does not exist. Mathematicians should get rid of the constraints of Abel and Galois’s theories, keep looking for the radical solutions of high degree equations.</span></span> 展开更多
关键词 Quintic Equation Gauss basic Theorem of Algebra Radical solution Abel’s Theory Galois’s Theory Solvable Group Lagrange’s Resolvents
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Analysis of the Impact of Optimal Solutions to the Transportation Problems for Variations in Cost Using Two Reliable Approaches
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作者 Abdur Rashid Md. Amirul Islam 《American Journal of Computational Mathematics》 2023年第4期607-618,共12页
In this paper, we have used two reliable approaches (theorems) to find the optimal solutions to transportation problems, using variations in costs. In real-life scenarios, transportation costs can fluctuate due to dif... In this paper, we have used two reliable approaches (theorems) to find the optimal solutions to transportation problems, using variations in costs. In real-life scenarios, transportation costs can fluctuate due to different factors. Finding optimal solutions to the transportation problem in the context of variations in cost is vital for ensuring cost efficiency, resource allocation, customer satisfaction, competitive advantage, environmental responsibility, risk mitigation, and operational fortitude in practical situations. This paper opens up new directions for the solution of transportation problems by introducing two key theorems. By using these theorems, we can develop an algorithm for identifying the optimal solution attributes and permitting accurate quantification of changes in overall transportation costs through the addition or subtraction of constants to specific rows or columns, as well as multiplication by constants inside the cost matrix. It is anticipated that the two reliable techniques presented in this study will provide theoretical insights and practical solutions to enhance the efficiency and cost-effectiveness of transportation systems. Finally, numerical illustrations are presented to verify the proposed approaches. 展开更多
关键词 Transportation Problem Initial basic Feasible solution Optimal solution Two Reliable Approaches (theorems) and Numerical Illustrations
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数字时代高校教材建设的基本逻辑、现实困境与解决路径
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作者 王美 乔江艳 赵丽曼 《吉林省教育学院学报》 2026年第1期130-134,共5页
数字技术赋能下的高校教材发生了革新性的变化,共享了教学资源,提升了教学效果,重塑了教学生态,推动教材育人价值在互动化的教学场景中深度落地。然而,对数字化教材的价值认同不足,教材建设的线上内容资源不丰富,教材智能监测机制不完善... 数字技术赋能下的高校教材发生了革新性的变化,共享了教学资源,提升了教学效果,重塑了教学生态,推动教材育人价值在互动化的教学场景中深度落地。然而,对数字化教材的价值认同不足,教材建设的线上内容资源不丰富,教材智能监测机制不完善,教材建设发展动力支持不充分仍是制约数字时代高校教材建设发展的现实困境。鉴于此,应强化价值认知,深耕数字化教材的开发与应用;丰富教学资源,构建学科适配的多元化教材体系;健全监测机制,提升教材监测智能化水平;加大激励引导,完善高质量教材建设的保障措施。 展开更多
关键词 数字时代 教材建设 基本逻辑 现实困境 解决路径
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On the Experience, Problems in Science and Technology Services of Basic Scientific Research Institutes and Suggestions——Taking Zhenjiang Institute of Agricultural Sciences in Hilly Areas of Jiangsu as an Example
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作者 王敬根 单延博 +1 位作者 曲直 刘照亭 《Agricultural Science & Technology》 CAS 2017年第12期2681-2683,2686,共4页
Taking the Jiangsu Province as Zhenjiang Academy of Agricultural Sciences in Hilly Areas of an example, the paper elaborated the advanced practices of agricultural research institutes in agricultural science and techn... Taking the Jiangsu Province as Zhenjiang Academy of Agricultural Sciences in Hilly Areas of an example, the paper elaborated the advanced practices of agricultural research institutes in agricultural science and technology services and analyzed the difficulties and solutions in the services. process of science and technologyservices. 展开更多
关键词 basic scientific research institutes Science and technology services EXPERIENCE Existing problems solutionS
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基于熵权TOPSIS和RSR法分析贵阳市基层医疗卫生机构服务能力的影响因素
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作者 徐孟群 汪俊华 +6 位作者 李秀玲 罗鹏 陈太好 陈思银 彭晓唯 王群 张江萍 《贵州医科大学学报》 2026年第1期135-141,共7页
目的分析基层医疗卫生机构服务能力现状及影响因素,为提升基层医疗卫生机构服务能力提供科学依据。方法采用熵权优劣解距离(TOPSIS)法结合秩和比法(RSR)对贵阳市云岩区37所基层医疗机构进行服务能力综合评价与分档,采用有序logistic回... 目的分析基层医疗卫生机构服务能力现状及影响因素,为提升基层医疗卫生机构服务能力提供科学依据。方法采用熵权优劣解距离(TOPSIS)法结合秩和比法(RSR)对贵阳市云岩区37所基层医疗机构进行服务能力综合评价与分档,采用有序logistic回归分析其影响因素。结果不同机构服务能力差异显著,相对接近度Ci值评分>0.3的机构仅占10.81%,Ci值<0.05的机构占40.54%;RSR分档显示,被评为好、中、差的机构分别占16.22%、70.27%、13.51%;logistic回归分析显示,设立中医馆(阁)、签订双向转诊协议能够正向预测基层医疗卫生机构服务能力。结论贵阳市基层医疗卫生机构服务能力整体偏弱且分布不均衡,需通过加大财政投入、强化信息化建设、推进中医馆建设与双向转诊机制等措施,逐步提升其医疗服务能力。 展开更多
关键词 基层医疗卫生机构 医疗服务能力 熵权优劣解距离法 秩和比法 基本功能建设
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用QBASIC语言计算溶液的pH值
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作者 牟青松 《六盘水师范高等专科学校学报》 2003年第4期43-45,共3页
利用计算机编写 QBASIC语言程序计算各种酸碱溶液的pH值,能快速、准确地给出结果。
关键词 酸碱溶液 PH值 Qbasic语言
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在常微分方程组教学中实施素质教育初探
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作者 旷雨阳 李兴华 王太荣 《合肥师范学院学报》 2025年第1期114-117,141,共5页
素质教育课堂教学是大学本科院校推动心理育人最直接、最主要的手段。在消元法与基解矩阵法求解常微分方程组通解的教学过程中,针对大学数学本科生的四种学习特点,进行素质教育探究,得出大学生素质教育的必要性,以期为普通本科院校课堂... 素质教育课堂教学是大学本科院校推动心理育人最直接、最主要的手段。在消元法与基解矩阵法求解常微分方程组通解的教学过程中,针对大学数学本科生的四种学习特点,进行素质教育探究,得出大学生素质教育的必要性,以期为普通本科院校课堂教学的学生素质教育指明了新的方向。 展开更多
关键词 常微分方程组 消元法 基解矩阵法 素质教育
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有源配电网分布式光伏接入可行域的矩阵化解析计算方法 被引量:1
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作者 方家成 李鹏 +5 位作者 于浩 喻磊 冀浩然 刘胤良 赵金利 雷一勇 《电力自动化设备》 北大核心 2025年第8期3-11,19,共10页
针对现有配电网光伏承载力计算方法难以兼顾计算效率和信息全面性的问题,提出一种有源配电网分布式光伏接入可行域的矩阵化解析计算方法。将分布式光伏承载力建模为高维空间的光伏接入可行域;建立网络拓扑、源荷出力等的矩阵形式表达;... 针对现有配电网光伏承载力计算方法难以兼顾计算效率和信息全面性的问题,提出一种有源配电网分布式光伏接入可行域的矩阵化解析计算方法。将分布式光伏承载力建模为高维空间的光伏接入可行域;建立网络拓扑、源荷出力等的矩阵形式表达;建立矩阵化的约束模型,通过矩阵运算获得光伏接入可行域的解析表达式,实现承载力的快速计算。提出基于基可行解的光伏接入瓶颈环节分析方法,采用双描述法,用基可行解表示光伏接入可行域,结合安全约束索引矩阵,有效识别光伏接入瓶颈并计算安全裕度。通过IEEE123节点系统算例验证所提方法的有效性。 展开更多
关键词 配电网 分布式光伏承载力 光伏接入可行域 解析计算 基可行解
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Cellulose conversion to polyols on supported Ru catalysts in aqueous basic solution 被引量:8
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作者 DENG TianYin SUN JiYing LIU HaiChao 《Science China Chemistry》 SCIE EI CAS 2010年第7期1476-1480,共5页
It is of great significance and challenge to achieve direct conversion of cellulose to specific polyols,e.g.,ethylene glycol and propylene glycol.For such selective conversion,a novel one-pot approach was studied by c... It is of great significance and challenge to achieve direct conversion of cellulose to specific polyols,e.g.,ethylene glycol and propylene glycol.For such selective conversion,a novel one-pot approach was studied by combination of alkaline hydrolysis and hydrogenation on supported Ru catalysts.A wide range of bases including solid bases,e.g.,Ca(OH)2 and La2O3,and phosphate buffers were examined in the cellulose reaction in water,and the cellulose conversions and polyol products depended largely on the basicity or pH values in the aqueous solutions.Ethylene glycol,1,2-propanediol,and especially 1,2,5-pentanetriol were obtained with selectivities of 15%,14%and 22%,respectively,at 38%cellulose conversion at pH 8 in phosphate buffer solution.These preliminary results provide potentials for efficient conversion of cellulose to targeted polyols by using the advantages of bases. 展开更多
关键词 CELLULOSE POLYOLS Ru catalysts solid bases aqueous basic solutions
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Periodic solutions for an"SVIQR"epidemic model in a seasonal environment with general incidence rate
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作者 Miled El Hajji 《International Journal of Biomathematics》 2025年第7期185-213,共29页
Seasonality is repetitive in the ecological,biological and human systems.Seasonal factors affect both pathogen survival in the environment and host behavior.In this study,we considered a five-dimensional system of ord... Seasonality is repetitive in the ecological,biological and human systems.Seasonal factors affect both pathogen survival in the environment and host behavior.In this study,we considered a five-dimensional system of ordinary differential equations modeling an epidemic in a seasonal environment with a general incidence rate.We started by studying the autonomous system by investigating the global stability of steady states.Later,we proved the existence,uniqueness,positivity and boundedness of a periodic orbit in a non-autonomous system.We demonstrate that the global dynamics are determined using the basic reproduction number R_(o) which is defined by the spectral radius of a linear integral operator.We showed that if R_(o)<1,then the disease-free periodic solution is globally asymptotically stable and if R_(o)>1,then the trajectories converge to a limit cycle reflecting the persistence of the disease.Finally,we present a numerical investigation that support our results. 展开更多
关键词 "SVIQR"epidemic model seasonal environment periodic solution Lyapunov stability uniform persistence extinction basic reproduction number
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等离子体处理水溶液仿真:从参数获取、模型构建到智能算法
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作者 罗三土 张明岩 +4 位作者 张基珅 王子丰 孙博文 刘定新 荣命哲 《物理学报》 北大核心 2025年第23期23-38,共16页
大气压低温等离子体在生物医学、环境保护、纳米制造等领域具有广泛应用,而这些应用中的核心过程通常是等离子体与水溶液的相互作用.等离子体与水溶液的相互作用非常复杂,既包含种类繁多的气液两相反应,也包含相互耦合的粒子传质过程,... 大气压低温等离子体在生物医学、环境保护、纳米制造等领域具有广泛应用,而这些应用中的核心过程通常是等离子体与水溶液的相互作用.等离子体与水溶液的相互作用非常复杂,既包含种类繁多的气液两相反应,也包含相互耦合的粒子传质过程,使得现有的实验技术难以系统地阐释内在机制,仿真研究至关重要.10余年来,国内外对等离子体与水溶液相互作用的仿真研究取得了重要进展,基本解决了传质与反应参数缺乏的问题,从无到有建立了多种类型的仿真模型,并积极探索基于人工智能的新型仿真方法,显著提升了对该领域的认知水平.本文将从参数获取、模型构建到智能算法3个方面综述近年来的仿真研究进展,以期为国内同行和研究生提供参考. 展开更多
关键词 等离子体处理水溶液 基础参数 仿真模型 智能算法
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The Basic Theory of Solutions of the Time Varying Singular Retarded Functional Differential Equation
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《Systems Science and Systems Engineering》 CSCD 1997年第2期169-173,共5页
TheBasicTheoryofSolutionsoftheTimeVaryingSingularRetardedFunctionalDifferentialEquationswithIsolatedsingular... TheBasicTheoryofSolutionsoftheTimeVaryingSingularRetardedFunctionalDifferentialEquationswithIsolatedsingularPointsLIYuanqing,... 展开更多
关键词 basic THEORY solutionS DIFFERENTIAL
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载血人参石油醚部位胶束-白及多糖水凝胶对大鼠慢性创面愈合的促进作用 被引量:2
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作者 郑力凡 宋选飞 +5 位作者 钟靓 肖思羽 赵婵 刘耀 徐剑 张永萍 《山东医药》 2025年第4期21-25,共5页
目的观察载血人参石油醚部位胶束-白及多糖水凝胶(ISs-M-Gel)对大鼠慢性创面愈合的促进作用。方法80只雄性SPF级SD大鼠随机分为A、B、C、D、E组,每组16只。在各组大鼠背部制作2.5 cm×2.5 cm大小的创口,肌内注射青霉素钾(4000单位/... 目的观察载血人参石油醚部位胶束-白及多糖水凝胶(ISs-M-Gel)对大鼠慢性创面愈合的促进作用。方法80只雄性SPF级SD大鼠随机分为A、B、C、D、E组,每组16只。在各组大鼠背部制作2.5 cm×2.5 cm大小的创口,肌内注射青霉素钾(4000单位/次,1次/天,连续4 d)和醋酸氢化可的松(80 mg/kg,1次/天,连续7 d),以制备慢性创面模型。制模成功后,A组大鼠创面涂抹纯水,B组大鼠创面涂抹牛碱性成纤维细胞生长因子外用溶液,C组大鼠创面涂抹血人参石油醚部位(ISs),D组大鼠创面涂抹空白胶束-白及多糖水凝胶(Blank-M-Gel),E组大鼠创面涂抹ISs-M-Gel,每日涂抹1次,连续21 d。拍摄干预第3、7、14、21天的创面,计算创面愈合率;在上述时间点选取各组大鼠,取血制备血清,采用酶联免疫吸附试验检测血清白细胞介素6(IL-6)和肿瘤坏死因子α(TNF-α),并取创面再生皮肤组织进行HE、Masson染色,另采用总超氧化物歧化酶(SOD)和丙二醛(MDA)试剂盒检测创面再生皮肤组织SOD和MDA含量,使用免疫组化法检测创面再生皮肤组织CD31,以评估血管生成情况。结果干预第14、21天,与A组比较,其余各组创面愈合率均提高(P均<0.05);与A组比较,干预第7、14天B组和E组大鼠血清IL-6与TNF-α水平降低,干预第14、21天B组和E组创面再生皮肤组织SOD升高而MDA降低(P均<0.05)。与其他给药组比较,B组与E组再生皮肤纤维组织沉积更密集。干预第14、21天,与A组比较,B、C、E组大鼠创面再生皮肤组织CD31阳性表达增多,血管生成情况最好。结论ISs-M-Gel可促进大鼠慢性创面愈合,且效果好于ISs、Blank-M-Gel,与牛碱性成纤维细胞生长因子外用溶液效果相当。 展开更多
关键词 载血人参石油醚部位胶束-白及多糖水凝胶 牛碱性成纤维细胞生长因子外用溶液 慢性创面 创面愈合
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Geology,geochemistry and mineralization of the Taishang-Shuiwangzhuang supergiant gold deposit(>700 t Au),northwestern Jiaodong Peninsula,China:A review
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作者 Xiang-dong Liu Zheng-jiang Ding +5 位作者 Zhong-yi Bao Chun-ming Yan Hao-cheng Yu Jia-meng Fan Tian-ci Xie Zhi-ning Liu 《China Geology》 2025年第4期843-861,共19页
The Taishang-Shuiwangzhuang gold deposit is located in the southeastern margin of Linglong gold field in the northern part of the Zhaoping Fault metallogenic belt of the Jiaodong gold province-the world’s third-large... The Taishang-Shuiwangzhuang gold deposit is located in the southeastern margin of Linglong gold field in the northern part of the Zhaoping Fault metallogenic belt of the Jiaodong gold province-the world’s third-largest gold metallogenic area.Major prospecting breakthroughs have been made at the depth of 600‒2500 m in recent years,with cumulative proven gold resources exceeding 700 t.Based on a large number of exploration data,the main characteristics of the deposit are described in detail,and the spatial coupling relationship between ore-controlling fault and main orebodies is discussed.The main orebodies occur as regular large veins,exhibiting branching and combination,expansion and contraction,and pinch-out and reoccurrence.They extend in a gentle wave pattern along their strikes and dip directions and generally have a pitch direction of NEE and a plunge direction of NEE.As the ore-controlling fault,the Zhaoping Fault has the characteristics of wave-like fluctuation,with its dip angle presenting three steps of steep-slow transition within the depth range of 2500 m.The gold mineralization enrichment area is mainly distributed in the step parts where the fault plane changes from steeply to gently.The ore-forming age,ore-forming fluid and ore-forming material sources and the genesis of the ore deposit are analyzed based on the research results of ore deposit geochemistry.The ore-forming fluids were H_(2)O-CO_(2)-NaCl-type hydrothermal solutions with a medium-low temperature and medium-low salinity.The H-O isotopic characteristics indicate that the fluids in the early ore-forming stage were possibly formed by degassing of basic magma and that meteoric water gradually entered the ore-forming fluids in the late ore-forming stage.The S and Pb isotopes indicate that the ore-forming materials mainly originate from the lower crust and contain a small quantity of mantle-derived components.The comprehensive analysis shows that the Taishang-shuiwangzhuang gold deposit was a typical“Jiaodong type”gold deposit.The strong crust-mantle interactions,large-scale magmatism,and the material exchange arising from the transformation from the ancient lower crust to the juvenile lower crust during the Early Cretaceous provided abundant fluids and material sources for mineralization.Moreover,the detachment faults formed by the rapid magmatic uplift and the extensional tectonism created favorable temperature and pressure conditions and space for fluid accumulation and gold precipitation and mineralization. 展开更多
关键词 GEOCHEMISTRY MINERALIZATION Super giant gold deposit Ore-forming age Ore-forming fluids H_(2)O-CO_(2)-NaCl-type hydrothermal solutions Crust-mantle interactions basic magma Metallogenic prediction Mineral exploration engineering Taishang-Shuiwangzhuang Jiaodong Peninsula
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