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Separation of strontium from associated elements with selective specific resin and extraction chromatography

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Chinese Chemical Letters 2013年第7期24卷 633-635页

作者： Shu-Chao Wu Chao-Yang Sun Wen-Ni Wang Ying-Ting He sheng-hong hu Cun-Jiang Zheng Faculty of Earth Sciences China University of Geosciences Zhejiang Institute of Geology & Mineral Resources Key Laboratory of Global Change and Marine-Atmospheric Chemistry State Oceanic Administration

In this paper, separation of Sr from associated elements （Na, K, Ca, Mg, and Ba） was carried out using an extraction chromatographic column packed with Sr selective specific resin consisting of an octanol solution of 4,4＇（5＇）-bis（t-butylcyclohexo）-lS-crown-6 sorbed on an inert polymeric support. Using 8.0 mol/L HNO3 as the eluent, Ba and associated elements were eluted immediately from the column, whereas Sr was strongly retained. The adsorbed Sr could then be stripped from the column as the eluent was changed to 0.05 mol/L HNO~. Complete Sr/Ba separation was demonstrated to be feasible in that Ba could be washed from the column leaving pure Sr by adequate rinsing with 8.0 mol/L HN03. Furthermore, matrix effect could be effectively eliminated and the selectivity of the method was improved. The method was applied for the determination of Sr in the high purity barium carbonate （BaCO3） product and seawater. The recoveries of Sr in 2 samples were determined to be 93.2% and 109%, respectively.

关键词： Strontium Extraction chromatography Selective specific resin

Effects of Wy14643 on hepatic ischemia reperfusion injury in rats

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World Journal of Gastroenterology 2008年第45期14卷 6936-6942页

作者： Si-Qi Xu Yuan-Hai Li sheng-hong hu Ke Chen Liu-Yi Dong Department of Anesthesiology First Affiliated Hospital of Anhui Medical University Hefei 230022 Anhui Province China Department of Pharmacology Anhui Medical University Hefei 230032 Anhui Province China

AIM: To investigate the effects and possible mechanisms of Wy14643 on hepatic ischemia-reperfusion (I/R) injury in ***: Thirty male Sprague-Dawley rats weighing 220-280 g were randomly divided into five experimental groups: sham group (G1, n = 6): a sham operation was performed (except for liver I/R); I/R-untreated group (G2, n = 6): rats underwent liver ischemia for 90 min followed by reperfusion for 4 h; and I/R + Wy14643 groups (G3, G4, G5; n = 6): after the same surgical procedure as in group 2, animals were pretreated with Wy14643 at the dose of 1, 5 and 10 mg/kg 1 h before ischemia, respectively. Hepatic ischemia-reperfusion (I/R) was induced by clamping blood supply to the left lateral and median lobes of the liver for 90 min, and atraumatic clamp was removed for 4 h reperfusion. Blood samples and liver tissues were obtained at the end of reperfusion to assess serum and hepatic tissue homogenate aminotransferase (ALT), aspartate aminotransferase (AST), myeloperoxidase (MPO), serum interleukin-1β (IL-1β) and tumor necrosis factor alpha (TNF-α), as well as activity of superoxide dismutase (SOD) and content of malondialdehyde (MDA) in the hepatic tissue homogenate. RESULTS: Hepatic I/R induced a significant increase in the serum levels of ALT, AST, TNF-α, IL-1β and MPO, as well as the levels of ALT, AST and MDA in the liver tissue homogenate, which were reduced bypretreatment with Wy14643 at the dose of 1, 5 and 10 mg/kg, respectively. The activity of SOD in the liver tissue homogenate was decreased after hepatic I/R, which was enhanced by Wy14643 pretreatment. In addition, serum and liver tissue homogenate ALT and AST in the Wy14643 10 mg/kg group were lower than in the Wy14643 1 mg/kg and 5 mg/kg groups, ***: Wy14643 pretreatment exerts significant protection against hepatic I/R injury in rats. The protective effects are possibly associated with enhancement of anti-oxidant and inhibition inflammation response.

关键词： Wy14643 Liver Ischemia-reperfusion Effects

Boosting Oxygen Evolution Reaction Performance on NiFe‑Based Catalysts Through d‑Orbital Hybridization

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Nano-Micro Letters 2025年第1期17卷 281-292页

作者： Xing Wang Wei Pi sheng hu Haifeng Bao Na Yao Wei Luo State Key Laboratory of New Textile Materials and Advanced Processing Technology Key Laboratory of New Textile Materials and Applications of Hubei ProvinceSchool of Materials Science and EngineeringWuhan Textile UniversityWuhan 430200People’s Republic of China College of Chemistry and Molecular Sciences Wuhan UniversityWuhan 430072People’s Republic of China

Anion-exchange membrane water electrolyzers(AEMWEs)for green hydrogen production have received intensive attention due to their feasibility of using earth-abundant NiFe-based *** introducing a third metal into NiFe-based catalysts to construct asymmetrical M-NiFe units,the d-orbital and electronic structures can be adjusted,which is an important strategy to achieve sufficient oxygen evolution reaction(OER)performance in ***,the ternary NiFeM(M:La,Mo)catalysts featured with distinct M-NiFe units and varying d-orbitals are reported in this *** and theoretical calculation results reveal that the doping of La leads to optimized hybridization between d orbital in NiFeM and 2p in oxygen,resulting in enhanced adsorption strength of oxygen intermediates,and reduced rate-determining step energy barrier,which is responsible for the enhanced OER *** critically,the obtained NiFeLa catalyst only requires 1.58 V to reach 1 A cm^(−2) in an anion exchange membrane electrolyzer and demonstrates excellent long-term stability of up to 600 h.

关键词： NiFe-based catalysts d-orbital coupling Oxygen evolution reaction Anion exchange membrane electrolyzer

345例间质性肺炎中医体质因素及加重病因相关性分析

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中国中医基础医学杂志 2017年第6期23卷 813-815页

作者：马君周胜红田虎山东中医药大学附属医院济南250011 山东省中医药研究院济南250014 济南市长清区大学科技园山东中医药大学济南250355

目的:初步探讨间质性肺炎中医体质因素及加重病因的相关性。方法:对345例间质性肺炎患者调查分析,完成《中医体质分类与判定表》《间质性肺炎患者中医病因登记表》,记录患者一般资料和体质类型、加重病因等,分析体质类型、加重病因等分... 详细信息

目的:初步探讨间质性肺炎中医体质因素及加重病因的相关性。方法:对345例间质性肺炎患者调查分析,完成《中医体质分类与判定表》《间质性肺炎患者中医病因登记表》,记录患者一般资料和体质类型、加重病因等,分析体质类型、加重病因等分布情况并进行统计分析。结果:频次结果显示,频次较多的体质类型为气虚质、特禀质、痰湿质、气郁质、阳虚质,痰湿质患者男性多于女性,阳虚质、气郁质患者女性多于男性;相关性结果显示,气虚质与疾病呈显著性相关;从加重病因分析,外感六淫、环境刺激、七情内伤出现频次较多,情志病因女性患者更多见。结论:气虚质、特禀质、痰湿质、气郁质是间质性肺炎发病的主要体质类型,外感六淫、环境因素、情志内伤是中医的主要加重病因。

关键词：中医体质间质性肺炎急性加重中医病因危险因素

静脉泵注右美托咪定联合罗哌卡因切口浸润在小儿腹腔镜手术中的应用

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中国现代医学杂志 2021年第17期31卷 36-40页

作者：徐煌王胜斌居霞胡胜红徐四七李晓婷安徽医科大学附属安庆医院麻醉科安徽安庆246003

目的观察右美托咪定联合罗哌卡因切口浸润在小儿腹腔镜手术中的应用效果。方法选取2017年1月—2018年1月安徽医科大学附属安庆医院行腹腔镜手术患儿120例,采用随机数字表法分为A、B、C 3组,每组40例。A组为对照组,关闭气腹前静脉推注芬... 详细信息

目的观察右美托咪定联合罗哌卡因切口浸润在小儿腹腔镜手术中的应用效果。方法选取2017年1月—2018年1月安徽医科大学附属安庆医院行腹腔镜手术患儿120例,采用随机数字表法分为A、B、C 3组,每组40例。A组为对照组,关闭气腹前静脉推注芬太尼1.0μg/kg;B组术毕用0.25%罗哌卡因浸润切口;C组麻醉诱导前静脉泵注右美托咪定0.4μg/kg,术毕用0.25%罗哌卡因浸润切口。记录3组患儿术中麻醉药物的用量,苏醒期躁动发生率,麻醉后恢复室(PACU)停留时间,以及术后4 h、8 h、12 h、24 h、48 h NRS评分、围术期并发症的发生率、住院时间、家长满意度。结果与A、B两组比较,C组患儿苏醒期躁动发生率明显降低,家长满意度明显提高(P0.05)。结论静脉输注右美托咪定联合罗哌卡因切口浸润可降低小儿腹腔镜术后苏醒期躁动发生率,减轻患儿术后疼痛,提高家长满意度。

关键词：小儿腹腔镜手术静脉麻醉切口浸润麻醉右美托咪定罗哌卡因

机载闭环定向红外对抗系统关键技术分析与验证

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电光与控制 2017年第1期24卷 58-62页

作者：张元生胡红斌边栓成蔡猛中国航空工业集团公司洛阳电光设备研究所河南洛阳471000

分析了闭环定向红外对抗技术的优势,总结了国外机载闭环定向红外对抗技术的研究进展及其发展趋势,阐述了机载闭环定向红外对抗系统的一般组成和工作原理,重点分析了宽温域高效率红外激光器技术、高精度主动跟踪技术、导引头快速准确识... 详细信息

分析了闭环定向红外对抗技术的优势,总结了国外机载闭环定向红外对抗技术的研究进展及其发展趋势,阐述了机载闭环定向红外对抗系统的一般组成和工作原理,重点分析了宽温域高效率红外激光器技术、高精度主动跟踪技术、导引头快速准确识别技术、激光调制编码干扰技术等机载闭环定向红外对抗系统的关键技术,给出了闭环定向红外对抗系统的关键技术试验验证情况。

关键词：定向红外对抗闭环红外导引头识别主动跟踪

Density Functional Theory Study of Infrared and Ultraviolet Spectra of Urea L-Malic Acid

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Chinese Journal of Chemical Physics 2008年第6期21卷 535-540页

作者： Yan-lan Zhang hong-yan Wang Dong-sheng Jiao Yong-hong hu Institute of Atomic and Molecular Physics Sichuan University Chengdu 610065 China College of Sciences Southwest Jiaotong University Chengdu 610031 China College of Life Science and Pharmaceutical Engineering Nanjing University of Technology Nanjing 210009 China

Urea L-malic acid, a new second order nonlinear optical crystal, was studied using density functional theory （DFT）. PBEPBE/6-31＋G（d,p） method, the optimal method for comparing the results from the several DFT methods, was chosen to study the molecular structure. Infrared and ultraviolet-visible spectra were obtained and compared with experiments. The ultraviolet-visible spectrum was also analyzed by the molecular orbital population. The geometries, and the infrared and ultraviolet-visible spectra in water were studied using DFT methods in combination with the polarized continuum model to predict the perturbations by the solvent effect.

关键词： Urea L-malic acid Density functional theory Molecular structure Infrared spectrum Ultraviolet-visible spectrum

Integrating potential distribution of dominant vegetation and land use into ecological restoration in the Yellow River Basin,China

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Journal of Mountain Science 2022年第10期19卷 2886-2904页

作者： JIAN sheng-qi Zhu Tian-sheng hu Cai-hong College of Water Resources and Environment Zhengzhou UniversityZhengzhou 450001China

Due to the influence of human activities such as cultivation and urban construction,the ecosystem of the Yellow River Basin(YRB)is subjected to increased vulnerability and even potential risk of *** restoration has led to an increase in vegetation,but excessive afforestation conversely results in low survival rate of trees,water shortages,and biodiversity *** is of great significance for achieving sustainable development of forests to reasonable revegetation in the *** present,the potential distribution pattern of dominant species and their mixed forms in the basin has not been effectively *** study simulated the potential distribution of dominant vegetation in the YRB based on Maximum Entropy(Max Ent)and Genetic Algorithm for Rule-Set Prediction(GARP)and explored the impact of human interference on it by employing land use as the environmental filter to distinguish the regions of human *** further predicted the potential distribution of typically mixed forests and discussed their human *** main results are as follows:(1)Except for Caragana korshinskii,all models had good above performance(0.7human activities caused great damage to the core growth regions of these vegetation.(3)Mean temperature of c

关键词： Yellow River Potential distribution Land use Mixed forests Vegetation restoration

Adaptive rotor current control for wind-turbine driven DFIG using resonant controllers in a rotor rotating reference frame

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第2期9卷 149-155页

作者： Jia-bing hu Yi-kang HE hong-sheng WANG School of Electrical Engineering Zhejiang University Hangzhou 310027 China

This paper proposes an adaptive rotor current controller for doubly-fed induction generator (DFIG), which consists of a proportional (P) controller and two harmonic resonant (R) controllers implemented in the rotor rotating reference frame. The two resonant controllers are tuned at slip frequencies ωslip+ and ωslip-, respectively. As a result, the positive- and negative-sequence components of the rotor current are fully regulated by the PR controller without involving the positive- and negative-sequence decomposition, which in effect improves the fault ride-through (FRT) capability of the DFIG-based wind power generation system during the period of large transient grid voltage unbalance. Correctness of the theoretical analysis and feasibility of the proposed unbalanced control scheme are validated by simulation on a 1.5-MW DFIG wind power generation system.

关键词： Unbalanced grid voltage Doubly-fed induction generator (DFIG) Proportional plus Resonant (PR) controller Faultride-through (FRT)