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PARALLEL COMPOUND METHODS FOR SOLVING PARTITIONED STIFF SYSTEMS
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作者 Li-rong Chen De-gui Liu 《Journal of Computational Mathematics》 SCIE EI CSCD 2001年第6期639-650,共12页
Deals with the solution of partitioned systems of nonlinear stiff differential equations. Discussion on parallel compound methods; Nonstiff equations; Order conditions of the parallel compound methods (PCM); Numerical... Deals with the solution of partitioned systems of nonlinear stiff differential equations. Discussion on parallel compound methods; Nonstiff equations; Order conditions of the parallel compound methods (PCM); Numerical stability of PCM. 展开更多
关键词 parallel compound methods stiff systems order conditions CONVERGENCE STABILITY
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Study on extracting alumina from fly ash by compound additive activation method 被引量:1
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作者 WANG Yongwang 《Global Geology》 2014年第3期182-188,共7页
According to the chemical and mineral composition characteristics of the fly ash,alumina can be extracted from fly ash through the calcining method by using sodium carbonate and calcium carbonate additives.The effects... According to the chemical and mineral composition characteristics of the fly ash,alumina can be extracted from fly ash through the calcining method by using sodium carbonate and calcium carbonate additives.The effects on leaching rate of alumina have been investigated. The results showed that the fly ash can be activated effectively and the leaching rate of alumina can be improved to more than 92% through this method. The best process parameters were the ratio of raw materials,i. e. the material weight ratio of fly ash,calcium carbonate and sodium carbonate was 1. 0∶1. 2∶0. 9. The activating temperature was 850℃-900℃,activating time was 3 h. This process has a potential application prospect and improves the value of comprehensive utilization of fly ash. 展开更多
关键词 fly ash compound additive activation method EXTRACT ALUMINA
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ONE-CELL-STATE METHOD FOR DETERMINATION OF ELECTRONIC STRUCTURE OF INTERMETALLIC COMPOUNDS 被引量:2
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作者 Gao Yingjun , Chen Zhenhua , Huang Peiyun and Zhong Xiaping Institute of Nonequilibrium Materials, Central South University of Technology, Changsha 410083, P. R. China Physical Department, Guangxi University, Nanning 530004, P 《中国有色金属学会会刊:英文版》 CSCD 1998年第4期19-24,共6页
INTRODUCTIONInrecentyears,thePauling’svalencebond(VB)theoryhasbenmadeagreatprogresindesigninganddeterminingt... INTRODUCTIONInrecentyears,thePauling’svalencebond(VB)theoryhasbenmadeagreatprogresindesigninganddeterminingtheatomicstate,and... 展开更多
关键词 ONE cell STATE method INTERMETALLIC compound ELECTRONIC STRUCTURE charge transfer Al 3Li
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A meshless method for the compound KdV-Burgers equation 被引量:1
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作者 程荣军 程玉民 《Chinese Physics B》 SCIE EI CAS CSCD 2011年第7期41-46,共6页
The element-free Galerkin (EFG) method for numerically solving the compound Korteweg-de Vries-Burgers (KdVB) equation is discussed in this paper. The Galerkin weak form is used to obtain the discrete equation and ... The element-free Galerkin (EFG) method for numerically solving the compound Korteweg-de Vries-Burgers (KdVB) equation is discussed in this paper. The Galerkin weak form is used to obtain the discrete equation and the essential boundary conditions are enforced by the penalty method. The effectiveness of the EFG method of solving the compound Korteweg-de Vries-Burgers (KdVB) equation is illustrated by three numerical examples. 展开更多
关键词 element-free Galerkin (EFG) method meshless method compound Korteweg-de Vries-Burgers (KdVB) equation solitary wave
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A Convenient Method for Dehydrogenation of Symmetric Hydrazo Compounds
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《厦门大学学报(自然科学版)》 CAS CSCD 北大核心 1999年第S1期318-318,共1页
关键词 A Convenient method for Dehydrogenation of Symmetric Hydrazo compounds
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Discussion on the Quality Evaluation Method of Traditional Chinese Medicine Compound Preparations
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作者 Jie LIANG Yushan ZHOU +4 位作者 Chenxi XIN Chuanchuan YANG Jinyu WEI Dongfang HUANG Lichun ZHAO 《Medicinal Plant》 CAS 2020年第1期11-16,共6页
As an important representative of the modernization of the Chinese medicine industry,traditional Chinese medicine(TCM)compound preparations are an indispensable part of the development of TCM.The complex ingredients a... As an important representative of the modernization of the Chinese medicine industry,traditional Chinese medicine(TCM)compound preparations are an indispensable part of the development of TCM.The complex ingredients and unclear action mechanism of TCM compound preparations restrict the development of TCM.In line with this problem,the modern TCM research has made extensive remarkable achievements.From the single indicator in the past to multiple indicator,the research on the combination of TCM fingerprints and pharmacodynamics also has made great progress.The introduction of quality evaluation methods such as the"quantitative analysis of multi-components by a single marker","dose-effect"indicator,"Bioactive Equivalent Combinatorial Components"(BECCs)and TCM quality markers have brought new ideas for quality control of TCM compound preparations. 展开更多
关键词 TRADITIONAL Chinese medicine(TCM) compound preparations QUALITY evaluation method
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Effect of Different Drying Methods on the Volatile Compounds Jinmudan Oolong Tea 被引量:2
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作者 Hui-Jing Xu Ying Wu +3 位作者 Qing Wei Fei-Long Cui Jing Zhu Ling-Yun Zhang 《茶叶》 2013年第4期362-369,共8页
Jinmudan,a new tea variety from Fujian Province has an excellent quality with a unique aroma like magnolia frogrance.To monitor the changes in the tea volatile compounds during the Jinmudan Oolong tea manufacturing(dr... Jinmudan,a new tea variety from Fujian Province has an excellent quality with a unique aroma like magnolia frogrance.To monitor the changes in the tea volatile compounds during the Jinmudan Oolong tea manufacturing(drying) process,the volatiles of tea samples were extracted and analyzed.Characteristic volatile compounds in Jinmudan Oolong tea were nerolidol,α-farnesene,linolenic acid,palmitic acid,indole,phenylacetaldehyde,cisjasmone,β-phenylethanol,etc.The content of nerolidol was the highest in four tested samples.The composition of the volatile compounds in microwave drying sample was simple,but its concentration was high,in which the main volatile compounds were alcohols and esters.The processing with combination of traditional drying craft and modern aroma-improvement technique could obviously improve the tea aroma,especially in level of epoxy linalool and jasmine lactone. 展开更多
关键词 挥发性化合物 干燥方法 乌龙茶 茶叶香气 橙花叔醇 茶叶品种 苯基乙醇 测试样本
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A NEW METHOD FOR SYNTHESIS OF O-ISOPROPYL SUBSTITUTED AROMATIC COMPOUNDS
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作者 Xue Chao WANG Xin Fu PANState Key Laboratory of Applied Organic Chemistry,Lanzhou University,Lanzhou,730000 《Chinese Chemical Letters》 SCIE CAS CSCD 1992年第5期329-332,共4页
Heteroatom-directed aromatic lithiation reactions used for the regiospecific synthesis of o-isopropyl substituted phenolic and benzyl alcoholic compounds are described.
关键词 A NEW method FOR SYNTHESIS OF O-ISOPROPYL SUBSTITUTED AROMATIC compoundS
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A New Method for the Preparation of Substituted Benzil Compounds from Substituted Benzoin Compounds
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《厦门大学学报(自然科学版)》 CAS CSCD 北大核心 1999年第S1期321-321,共1页
关键词 A New method for the Preparation of Substituted Benzil compounds from Substituted Benzoin compounds
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Mobile Equilibrium Method for Determining Composition and Stability Constant of Coordination Compounds of the Form M_mR_n
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作者 周执明 毛东森 叶存孝 《Journal of Rare Earths》 SCIE EI CAS CSCD 1997年第3期57-60,共4页
A new method is proposed for determining the composition and stability constant of coordination compounds of the form M m R n ; it can be used to differentiate mono and poly nuclear coordination compounds. ... A new method is proposed for determining the composition and stability constant of coordination compounds of the form M m R n ; it can be used to differentiate mono and poly nuclear coordination compounds. The equation derived is lg( A i/(A max - A i) m)=n lg c′ R+lg( m·β(c M/A max ) ( m -1) ). The method is based on Bent French limited logarithm method. The demonstration of the proposed method has yielded correct results for Sc 3+ chlorophosphonazo Ⅲ system and Fe 3+ Chromazurol S system. 展开更多
关键词 Rare earths Mobile equilibrium method Polynuclear coordination compounds COMPOSITION Stability constant
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A Mapping Method of Using the Compound Use Cases to Generate User Interface
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作者 Bingbing Xia Yue Zhang 《Open Journal of Applied Sciences》 2012年第3期180-183,共4页
To support the requirement analysis of the user interfaces and the auto generation of the final user interfaces, we should improve the traditional modeling method which centered on the system and the implementation, a... To support the requirement analysis of the user interfaces and the auto generation of the final user interfaces, we should improve the traditional modeling method which centered on the system and the implementation, and turn to use the modeling method which centered on the usage and the user. The compound use cases describe the system function from the user point of view. Based on the compound use cases, we can generate the final user interfaces. 展开更多
关键词 compound Use CASES USER INTERFACES Modeling method
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Validation for Microbial Limit Test Method of Compound Yu E Nose Drops
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作者 Renhui YANG Peixue CAO +1 位作者 Zhen ZENG Xiangling QU 《Agricultural Biotechnology》 CAS 2019年第5期125-128,共4页
[Objectives] This study was conducted to establish a method for microbial limit test of Compound Yu E Nose Drops.[Methods] According to the Chinese Pharmacopoei (General Rules in the fourth part of the 2015 edition),t... [Objectives] This study was conducted to establish a method for microbial limit test of Compound Yu E Nose Drops.[Methods] According to the Chinese Pharmacopoei (General Rules in the fourth part of the 2015 edition),the microbial limit test method for Compound Yu E Nose Drops was verified.[Results] Compound Yu E Nose Drops has a strong inhibitory effect on Staphylococcus aureus and Bacillus subtilis,and the inhibitory activity was significantly eliminated after increasing the diluent (1∶ 20).The recoveries were all in the range of 0.5-2.0 when the total quantities of aerobic microbes were determined by the dilution method (1∶ 20).When the total quantities of mould and yeast were determined by the conventional method,the recoveries were both in the range of 0.5-2.0.When examining control bacteria,Escherichia coli,S.aureus and Pseudomonas aeruginosa can all be detected in the test groups by the test liquid dilution method.[Conclusions] For Compound Yu E Nose Drops,the total quantities of aerobic microbe can be counted by the dilution method;the quantities of mould and yeast can be examined by the conventional plate method;and the conventional method can be used for control microbe examination. 展开更多
关键词 compound Yu E NOSE DROPS MICROBIAL LIMIT test DILUTION method
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天然气中硫化合物的色谱分析方法研究比较探讨
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作者 张苏敏 邓凡锋 +3 位作者 邓文清 张婷 赵星宇 王星 《计量与测试技术》 2026年第3期117-120,共4页
硫化合物对天然气的输送、储存和使用安全性均会产生不利的影响,需严格监测其含量,以防止超过限量要求而发生危险。本文基于国内外天然气中硫化合物气相色谱分析所用的方法及标准,分析比较了各种方法的检测原理、性能参数、测量范围及... 硫化合物对天然气的输送、储存和使用安全性均会产生不利的影响,需严格监测其含量,以防止超过限量要求而发生危险。本文基于国内外天然气中硫化合物气相色谱分析所用的方法及标准,分析比较了各种方法的检测原理、性能参数、测量范围及特点等,并根据其含量高低选择相应的检测方法,从而为相关分析检测研究提供参考。 展开更多
关键词 天然气 硫化合物 检测方法 标准
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火针温通法、苍耳子酊与复方甘草酸苷联合应用对白癜风患者皮损及Th17/Treg免疫失衡的影响
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作者 刘可 朱红柳 +1 位作者 毛秋霞 高以红 《中国美容医学》 2026年第2期93-97,共5页
目的:研究火针温通法、苍耳子酊与复方甘草酸苷联合应用对白癜风患者皮损及Th17/Treg免疫失衡的影响。方法:选取2023年12月1日-2024年4月30日于笔者医院就诊的符合研究条件的70例白癜风患者,以随机数字表法随机分为对照组和观察组,各35... 目的:研究火针温通法、苍耳子酊与复方甘草酸苷联合应用对白癜风患者皮损及Th17/Treg免疫失衡的影响。方法:选取2023年12月1日-2024年4月30日于笔者医院就诊的符合研究条件的70例白癜风患者,以随机数字表法随机分为对照组和观察组,各35例。对照组采用苍耳子酊与复方甘草酸苷治疗,观察组在对照组基础上采用火针温通法进行联合治疗。治疗过程持续12周。比较两组皮损情况[白癜风面积评分指数(VASI)、皮损色素积分]、免疫炎症相关指标[辅助性T细胞17(Th17)、调节性T细胞(Treg)、Th17/Treg和干扰素-γ(IFN-γ)、白介素-17(IL-17)]、氧化应激指标[超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、血红素氧合酶-1(HO-1)];统计两组患者不良反应发生率和复发率。结果:治疗后,观察组VASI下降且低于对照组,皮损色素积分升高且高于对照组(P<0.05);两组Th17细胞含量、IFN-γ和IL-17治疗后下降,Treg细胞含量上升,观察组变化幅度高于对照组(P<0.05);观察组SOD、CAT和HO-1水平治疗后高于对照组(P<0.05)。观察组不良反应发生率和复发率与对照组差异无统计学意义(P>0.05)。结论:火针温通法协同苍耳子酊外用,同时口服复方甘草酸苷可显著减少白癜风患者皮损面积,降低免疫反应和活性氧对色素细胞损伤。 展开更多
关键词 白癜风 复方甘草酸苷 火针温通法 苍耳子酊 免疫失衡
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Exact Traveling Wave Solutions for the (1 + 1)-Dimensional Compound KdVB Equation via the Novel (G'/G)-Expansion Method
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作者 Md. Nur Alam Fethi Bin Muhammad Belgacem 《International Journal of Modern Nonlinear Theory and Application》 2016年第1期28-39,共12页
In this work, while applying a new and novel (G'/G)-expansion version technique, we identify four families of the traveling wave solutions to the (1 + 1)-dimensional compound KdVB equation. The exact solutions are... In this work, while applying a new and novel (G'/G)-expansion version technique, we identify four families of the traveling wave solutions to the (1 + 1)-dimensional compound KdVB equation. The exact solutions are derived, in terms of hyperbolic, trigonometric and rational functions, involving various parameters. When the parameters are tuned to special values, both solitary, and periodic wave models are distinguished. State of the art symbolic algebra graphical representations and dynamical interpretations of the obtained solutions physics are provided and discussed. This in turn ends up revealing salient solutions features and demonstrating the used method efficiency. 展开更多
关键词 Novel (G'/G)-Expansion method The (1 + 1)-Dimensional compound KdVB Equation Traveling Wave Solutions Solitary Wave Solutions SOLITONS
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油田储罐VOCs排放量核算及优化设计研究
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作者 杨琳 《石油石化节能与计量》 2026年第3期80-84,共5页
为解决油田储罐VOCs排放导致的油气损耗与温室效应问题,助力石油行业“双碳”目标的实现,以美国EPA的AP-42方法为核算基础,通过Plackett-Burman(PB)实验筛选关键参数,采用Central Composite Design(CCD)实验分析关键参数之间的交互作用... 为解决油田储罐VOCs排放导致的油气损耗与温室效应问题,助力石油行业“双碳”目标的实现,以美国EPA的AP-42方法为核算基础,通过Plackett-Burman(PB)实验筛选关键参数,采用Central Composite Design(CCD)实验分析关键参数之间的交互作用,最后通过线性规划构造目标函数模型,分析不同场景下的储罐最佳设计方案,并进行现场推广应用。结果显示:考虑经济性场景、兼顾经济性和环保性场景时,5 000 m^(3)储罐的优势明显;考虑环保性场景时,1 000 m^(3)储罐的优势明显;优化后,低产能站场投资成本节约43.18%,中产能站场投资成本降低10.31%,高产能站场VOCs减排7.32%、年油气回收161.77 t。该研究可为油田储罐节能减排提供量化支撑与工程参考。 展开更多
关键词 储罐 挥发性有机物 排放量 AP-42方法 PB实验 CCD实验
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响应面法优化复合益生菌发酵仔猪配合饲料工艺的研究
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作者 班紫莹 周志远 +4 位作者 张真诚 田雨润 陈占省 刘长忠 高海燕 《中国饲料》 北大核心 2026年第7期80-85,共6页
为优化复合益生菌固态发酵仔猪配合饲料的发酵工艺,本试验以粗纤维降解率为主要指标,分别对接种量(I)、发酵温度(t)、发酵时间(T)进行单因素试验及响应面优化试验。结果表明:单因素的接种量、发酵温度或发酵时间对发酵仔猪配合饲料的粗... 为优化复合益生菌固态发酵仔猪配合饲料的发酵工艺,本试验以粗纤维降解率为主要指标,分别对接种量(I)、发酵温度(t)、发酵时间(T)进行单因素试验及响应面优化试验。结果表明:单因素的接种量、发酵温度或发酵时间对发酵仔猪配合饲料的粗纤维降解率影响显著(P<0.05),其最适范围为:3%≤I≤9%,26℃≤t≤32℃,24 h T≤48 h;二次响应面回归模型预测最佳发酵工艺参数为:I=5.8%,t=29.62℃,T=42.55 h,其粗纤维降解率为16.30%,且验证可行(P>0.05)。因此,该研究结果可为复合菌固态发酵仔猪配合饲料的工艺提供试验和理论支撑。 展开更多
关键词 响应面法 复合益生菌 发酵 猪配合饲料 工艺优化
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滇红加工过程中香气品质形成研究进展
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作者 曹祖菲 娜花花 +3 位作者 文涵湘 林茂 王白娟 刘晓慧 《食品研究与开发》 2026年第1期199-206,共8页
香气是决定茶叶品质的关键因素。随着分子化学、分子生物学和代谢组学等的发展,对滇红的香气形成的研究有着长足进展,该文综述滇红茶的香气品质化学物质基础、加工工艺的影响因素和检测手段,以及当前滇红茶香气研究的局限性,以期更好地... 香气是决定茶叶品质的关键因素。随着分子化学、分子生物学和代谢组学等的发展,对滇红的香气形成的研究有着长足进展,该文综述滇红茶的香气品质化学物质基础、加工工艺的影响因素和检测手段,以及当前滇红茶香气研究的局限性,以期更好地阐明滇红茶香气品质形成的全过程,为滇红茶加工过程中香气的形成提供理论依据。 展开更多
关键词 滇红茶 香气 加工工艺 关键呈香物质 检测手段
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La_(2)O_(3)掺入对提升CuMnO_(x)/堇青石催化氧化氯苯性能的研究
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作者 单佳鑫 黄琼 +6 位作者 杨孜素 童熙 毛君杰 魏琛 杨波 李大伟 陶涛 《环境工程学报》 北大核心 2026年第1期157-166,共10页
含氯挥发性有机物(Cl-VOCs)由于来源广泛、毒性强、不易降解、易产生多氯副产物等特点,环境危害大,备受人们高度关注。催化氧化技术因其起燃温度低、能耗小、效率高、无二次污染等优点,已成为当前Cl-VOCs处理主流技术和发展方向。本研... 含氯挥发性有机物(Cl-VOCs)由于来源广泛、毒性强、不易降解、易产生多氯副产物等特点,环境危害大,备受人们高度关注。催化氧化技术因其起燃温度低、能耗小、效率高、无二次污染等优点,已成为当前Cl-VOCs处理主流技术和发展方向。本研究通过柠檬酸络合法制备了一系列氧化镧(La_(2)O_(3))掺入的CuMnO_(x)/堇青石催化剂催化氧化氯苯,考察了Cu/Mn摩尔比、La_(2)O_(3)掺入量、CuMnO_(x)负载量以及煅烧温度对催化剂氧化性能影响,并采用X射线衍射(XRD)、布鲁诺-埃梅特-泰勒法(BET)、氢气程序升温还原(H_(2)-TPR)、氧气程序升温脱附(O_(2)-TPD)、X射线光电子能谱(XPS)、原位漫反射傅里叶变换红外光谱(in-situ DRIFTs)等分析手段对催化剂理化性质进行分析。结果发现,La_(2)O_(3)的掺入显著提升催化剂氧化活性,且随着掺入量的增加,H_(2)还原峰温度逐渐降低,也有利于的O^(-)脱附,更高效地提供活性氧,经500℃煅烧所制CuMn_(3)LaO_(x)/堇青石最佳,T_(99)=300℃,CuMn_(2)O_(4)、MnO_(2)和La_(2)O_(3)间的协同作用,即Cu^(2+)/Cu、Mn^(4+)/Mn^(3+)和La^(3+)/La间的氧迁移是该催化剂具有良好性能的重要原因,且催化剂高比表面积和孔体积进一步提升了其氧化活性。同时,研究考察了催化剂重复性、稳定性以及可能的氧化机理,催化剂展示出良好的催化剂稳定性,未发现催化中毒失活现象的发生。 展开更多
关键词 催化氧化 含氯挥发性有机物 氧化镧 柠檬酸络合法 堇青石
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绿色高分子阻垢剂合成技术与评价方法
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作者 高培智 贺鑫 +1 位作者 刘牡 唐玉霖 《应用化工》 北大核心 2026年第1期98-103,108,共7页
综述了绿色高分子阻垢剂的主要合成技术及其性能评价方法,分析了天然与合成高分子阻垢剂的提取、复配及改性策略。讨论了天然高分子阻垢剂的环保优势及其稳定性改进方法,合成高分子阻垢剂的单体选择与聚合方法对性能的影响。结合现有研... 综述了绿色高分子阻垢剂的主要合成技术及其性能评价方法,分析了天然与合成高分子阻垢剂的提取、复配及改性策略。讨论了天然高分子阻垢剂的环保优势及其稳定性改进方法,合成高分子阻垢剂的单体选择与聚合方法对性能的影响。结合现有研究,提出未来绿色高分子阻垢剂的研究趋势应聚焦于分子结构与阻垢性能之间的关联,采用多维度的评价方法对其机制进行解析。通过全面综述当前技术现状与面临的挑战,为绿色高分子阻垢剂的进一步研究与应用提供了发展建议。 展开更多
关键词 高分子阻垢剂 聚合方法 复配改性 性能评价
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