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臭参正丁醇萃取部位化学成分研究

中国现代中药 2017年第9期19卷 1233-1239页

作者：庄小翠晏永明张庆芝程永现中国科学院昆明植物研究所植物化学与西部植物资源持续利用国家重点实验室云南昆明650201 云南中医学院中药学院云南昆明650500

目的:对臭参正丁醇萃取部位的化学成分进行研究。方法:采用反相、凝胶和高效液相等色谱法结合核磁共振波谱、质谱等分离和鉴定臭参正丁醇萃取部位化合物的结构。结果:从中分离得到21个化合物,分别为7R,8R-苏式-4,7,9,9-四羟基-3-甲氧基-... 详细信息

目的:对臭参正丁醇萃取部位的化学成分进行研究。方法:采用反相、凝胶和高效液相等色谱法结合核磁共振波谱、质谱等分离和鉴定臭参正丁醇萃取部位化合物的结构。结果:从中分离得到21个化合物,分别为7R,8R-苏式-4,7,9,9-四羟基-3-甲氧基-8-O-4'-新木脂素-3'-O-β-D-吡喃葡萄糖苷(1),儿茶素-7-O-β-D-葡萄糖苷(2),紫丁香酚苷(3),松柏苷(4),党参苷II(5),(Z)-4-羟基肉桂醇-4-O-β-D-吡喃葡萄糖苷(6),2-羟甲基苯基-1-O-β-D-葡萄糖苷(7),苄基-6-O-β-D-吡喃木糖基-O-β-D-吡喃葡萄糖苷(8),(2E)-2-(β-D-吡喃葡萄糖氧基)-3-苯基-2-丙烯酸(9),(2Z)-2-(β-D-吡喃葡萄糖氧基)-3-苯基-2-丙烯酸(10),2-苯乙基-6-O-β-D-吡喃木糖基-O-β-D-吡喃葡萄糖苷(11),党参苷I(12),3-羟基-2-{4-[(1E)-3-羟基丙-1-烯-1-基]-2-甲氧基苯氧基}丙基-β-D-吡喃葡萄糖苷(13),(2E)-4-羟基-2-己烯酸(14),(2E)-3-甲基-2-戊二酸(15),5-乙酰莽草酸(16),色氨酸(17),腺苷(18),烟酸(19),咖啡因(20),5-(甲氧羰基)-2-吡咯烷酮(21)。结论:21个化合物均为已知化合物,其中化合物8、9、11、13和21为首次从臭参中分离得到。

关键词：臭参苯丙素苷生物碱

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高品质齿轮钢的最新研发进展

轨道交通材料 2023年第1期2卷 15-20页

作者：王毛球何肖飞尉文超闫永明时捷钢铁研究总院有限公司北京100094

文章综述了近年来高品质齿轮钢的研究进展,包括高质量稳定性齿轮钢、高温渗碳齿轮钢以及超长寿命齿轮钢等方面,重点在不大于4HRC窄淬透性带宽控制技术、960℃以上高温渗碳晶粒长大控制技术以及10^(9)周次超高周疲劳破坏机理及控制技术... 详细信息

文章综述了近年来高品质齿轮钢的研究进展,包括高质量稳定性齿轮钢、高温渗碳齿轮钢以及超长寿命齿轮钢等方面,重点在不大于4HRC窄淬透性带宽控制技术、960℃以上高温渗碳晶粒长大控制技术以及10^(9)周次超高周疲劳破坏机理及控制技术等方面,为高品质齿轮钢的开发及应用奠定了基础。

关键词：齿轮钢淬透性高温渗碳超高周疲劳

络虚不荣,邪气瘀阻——慢性疼痛中医共性核心病机发微

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辽宁中医杂志 2017年第10期44卷 2065-2067页

作者：王斯涵庞立健刘创刘勇明刘妍彤石岩吕晓东辽宁中医药大学辽宁沈阳110032 辽宁中医药大学附属医院辽宁沈阳110032

探究络病理论、邪实体虚相关学说与慢性疼痛之间的关系,结合慢性疼痛疾病的临床特点,提出其核心病机为"络虚不荣,邪气瘀阻",并指出"络虚不荣,邪气瘀阻"的现代科学内涵可能包括损伤神经元异位电活动、外周感受神经元受损以及外周敏化、... 详细信息

探究络病理论、邪实体虚相关学说与慢性疼痛之间的关系,结合慢性疼痛疾病的临床特点,提出其核心病机为"络虚不荣,邪气瘀阻",并指出"络虚不荣,邪气瘀阻"的现代科学内涵可能包括损伤神经元异位电活动、外周感受神经元受损以及外周敏化、中枢敏化、炎症因子、损伤组织微量元素、局部血流的异常等。同时,从"络虚不荣,邪气瘀阻"病机的角度阐述了原发性痛经、中风后肩手综合征、腰椎间盘突出症、肩周炎的临床表现。从而为以络论治慢性疼痛性疾病奠定理论基础提供临床诊疗新思路。

关键词：慢性疼痛络病理论病机

反应液温度对氢化物生成过程的影响及氢化物稳定性的考察

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分析化学 1985年第9期 673-676页

作者：宫本玲刘永铭谭伟阎洪才中国科学院大连化学物理研究所中国科学院大连化学物理研究所辽阳化纤学院84年毕业生辽阳化纤学院84年毕业生

自1969年Holak把氢化物发生技术用于原子吸收光谱分析以来,在各个领域均已得到广泛应用。在此期间,一些工作者对影响氢化物生成的条件,原子化机理,干扰及其消除等方面做了研究,但有关反应液温度对氢化物生成过程的影响及氢化物稳定性... 详细信息

自1969年Holak把氢化物发生技术用于原子吸收光谱分析以来,在各个领域均已得到广泛应用。在此期间,一些工作者对影响氢化物生成的条件,原子化机理,干扰及其消除等方面做了研究,但有关反应液温度对氢化物生成过程的影响及氢化物稳定性方面的报导甚少。本文对此进行了系统考察,并对实验结果进行了探讨。实验 1.仪器与装置:岛津AA-610s原子吸收分光光度计;自制的手动注射式氢化物发生

关键词：反应液原子化注射式催化氧化作用主族分解速度吸光度碱性溶液反应气体生成速率

Concurrent improvements of corrosion resistance and coercivity in Nd-Ce-Fe-B sintered magnets through engineering the intergranular phase

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Journal of Materials Science & Technology 2022年第15期110卷 239-245页

作者： Jiaying Jin yongming Tao Xinhua Wang Zeyu Qian Wang Chen Chen Wu Mi yan School of Materials Science and Engineering State Key Laboratory of Silicon MaterialsKey Laboratory of Novel Materials for Information Technology of Zhejiang ProvinceZhejiang UniversityHangzhou 310027China

Usually the improved coercivity of rare earth(RE)based 2:14:1-type permanent magnets via RE-rich intergranular additives is achieved at the cost of more corrosion channels and deteriorated corrosion resistance,which remains a challenging hurdle in the RE-Fe-B ***,here we report the concurrent improvements of corrosion resistance and coercivity in 40 wt.%Ce-substituted Nd-Ce-Fe-B sintered magnets through engineering the intergranular phase using simple(Nd,Pr)H_(x)*** dehydrogenated Nd/Pr changes the RE concentration gradients between 2:14:1 matrix and intergranular phases during sintering and enlarges the fraction of corrosion-resistant REFe_(2) phase,rather than the conventionally assumed Nd/Pr-rich intergranular phase with high chemical *** spontaneous formation of REFe_(2) intergranular phase after(Nd,Pr)H_(x) addition generates the uniquely enhanced corrosion resistance against the hot/humid and acidic environments,and counts as one peculiar feature of Nd-Ce-Fe-B magnets at high Ce substitution level,being distinct from previously reported Ce-free/lean ***,the formation of continuous grain boundaries enhances the coercivity from 8.7to 12.5 k Oe with trace addition of(Nd,Pr)H_(x).Above findings may spur progress towards developing a high-performance Nd-Ce-Fe-B permanent magnet.

关键词： Abundant rare earth Ce Corrosion resistance REFe_(2) Coercivity Microstructure

Improved nitrogen removal in dual-contaminated surface water by photocatalysis

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Frontiers of Environmental Science & Engineering 2012年第3期6卷 428-436页

作者： yongming ZHANG Rong yan Zhen ZOU Jiewei WANG Bruce E.RITTMANN Deparlxnent of Environmental Engineering College of Life and Environmental ScienceShanghai Normal UniversityShanghai 200234China Swette Center for Environmental Biotechnology Biodesign InstituteArizona State UniversityTempeAZ85287-5801USA

River waters in China have dual contamination by nutrients and recalcitrant organic compounds. In principle, the organic compotmds could be used to drive denitrification of nitrate, thus arresting eutrophication potential, if the recalcitrant organics could be made bioavailable. This study investigated the potential to make the recalcitrant organics bioavailable through photocatalysis. Batch denitrification tests in a biofilm reactor demonstrated that dual-contaminated river water was short of available electron donor, which resulted in low total nitrogen （TN） removal by denitrification. However, the denitrification rate was increased signifi- cantly by adding glucose or by making the organic matters of the river water more bioavailable through photocata- lysis. Photocatalysis for 15 min increased the Chemical Oxygen Demand （COD） of the river water from 53 to 84 mg. L-1 and led to a 4-fold increase in TN removal. The increase in TN removal gave the same effect as adding 92 mg.L 1 of glucose. During the photocatalysis experi- ments, the COD increased because photocatalysis trans- formed organic molecules from those that are resistant to dichromate oxidation in the COD test to those that can be oxidized by dichromate. This phenomenon was verified by testing photocatalysis of pyridine added to the river water. These findings point to the potential for N removal via denitrification after photocatalysis, and they also suggest that the rivers in China may be far more polluted than indicated by COD assays.

关键词： dual contamination eutrophication photocatalysis remediation surface water

Rapid Degrading Carbamazepine in a Novel Advanced Oxidation Process of Bisulfite Activated by Lithium Cobaltate Recovered from Spent Lithium-ion Battery

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Chemical Research in Chinese Universities 2024年第1期40卷 127-135页

作者： yan Jiali yang Kaiying Wang Xi Zhai Jinli Zhu Wenjie yang Daoli Luo yongming Gao Xiaoya Faculty of Environmental Science and Engineering Kunming University of Science and TechnologyKunming650500P.R.China Innovation Team for Volatile Organic Compounds Pollutants Control and Resource Utilization of Yunnan Province Kunming650500P.R.China Higher Educational Key Laboratory for Odorous Volatile Organic Compounds Pollutants Control of Yunnan Province Kunming650500P.R.China

Maximizing the sustainable recycling of spent lithium-ion batteries(LIBs)shows economic and environmental *** study recovered lithium cobaltate(LiCoO_(2),LCO)from spent LIBs cathode *** recovered LCO was then combined with NaHSO_(3)to remove refractory organic pollutants of carbamazepine(CBZ)in *** degradation of CBZ reached 80.0%within 60 min,by 1O_(2),SO_(4),OH and O_(2)^(-)generated in the LCO/NaHSO_(3)*** electron transfer between Co(III)and Co(II)was beneficial to the generation of free *** LCO/NaHSO_(3)degraded CBZ effectively in both secondary outlet water and tap ***,high concentrations of inorganic ions(Cl^(−),HCO_(3)^(-),HPO_(4)^(2-),SO_(2)−4,NO_(3)^(-))and natural organic matter(humic acid,HA)could inhibit the degradation of *** three cycles,the stability of the LCO/NaHSO_(3)system was demonstrated by the maintained high efficiency in the degradation of *** obtained data indicate that the LCO/NaHSO_(3)system holds great application potential in the field of advanced oxidation degradation of pollutants.

关键词： Spent lithium-ion battery Lithium cobaltate Carbamazepine NaHSO_(3) Advanced oxidation

Mechanically robust and dynamic supramolecular polymer networks enabled by[an]daisy chain backbones

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Science China Chemistry 2024年第12期67卷 4234-4241页

作者： yongming Wang Yi Ding Yuhang Liu Shaolei Qu Wenbin Wang Wei Yu Zhaoming Zhang Feng Liu Xuzhou yan School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative MoleculesShanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory for Mechanical Behavior of Materials Shaanxi International Research Center for Soft MatterSchool of Materials Science and EngineeringXi’an Jiaotong UniversityXi’an 710049China

Supramolecular polymer networks(SPNs)have garnered significant research interest due to their dynamic ***,while current developments primarily focus on managing supramolecular crosslinks,the role of polymer backbones—equally crucial to SPN properties—has not yet been sufficiently ***,we utilize mechanically interlocked[an]daisy chain as backbone to prepare a class of SPNs,where the force-induced motion of successive mechanical bonds toughens and reinforces the *** specific,the[an]daisy chain backbones connect with polynorbornene chains through quadruple H-bonding in the SPN *** to the control with non-slidable backbone,The representative SPN-2 exhibits a robust feature in tensile tests with high maximum stress(14.7 vs.7.89 MPa)and toughness(83.8 vs.48.6 MJ/m^(3)).Moreover,it also has superior performance in energy dissipation benefitting from the[an]daisy chain backbones as well as supramolecular ***,the SPN-2 displayed exceptional self-healing and reprocessing capabilities due to their dynamic quadrable H-bonding *** findings demonstrate the untapped potential of[an]daisy chain as a polymer skeleton to develop SPNs and open the door to design mechanically robust supramolecular materials with diverse smart functions.

关键词： supramolecular polymer networks mechanical bond [an]daisy chains self-healing dynamic materials

Preparation of a Novel Acid Doped Polyaniline Adsorbent for Removal of Anionic Pollutant from Wastewater

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Journal of Wuhan University of Technology(Materials Science) 2015年第5期30卷 1085-1091页

作者：李佳佳王其召 BAI yan JIA yongming SHANG Pan 黄皓浩 WANG Fangping College of Chemistry and Chemical Engineering Northwest Normal University Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education of China Key Laboratory of Gansu Polymer Materials College of Geography and Environment Science Northwest Normal University College of Materials Science and Engineering South China University of Technology

Polyaniline(PANI) was one of the most extensively studied adsorbents due to its low cost and good environmental stability. The objective of the current study was to improve the selective capabilities of PANI for anionic dyes. We found that the acid doped PANI prepared with hydrochloric acid and p-toluenesulfonic acid(PTSA) could selectively adsorb anionic dyes. It exhibited very good selectivity for OG dye, the mechanism was proposed based on the chemical interaction of PANI with the sulfonate group of the dyes. The effects of solution p H, initial dye concentration, and different HCl/PTSA mole ratios on the adsorption capacity of OG have been investigated. Kinetic simulations indicated that the adsorption process could be well represented by pseudo-second-order kinetic plots. The isothermal adsorption curve fitting also showed that the adsorption process could be well described by the Langmuir isothermal equation. The results showed that acid doped PANI could be employed as a promising adsorbent for anion removal from dye wastewater.

关键词： polyaniline modification anionic dye adsorption