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Intramolecular Charge Transfer Dual Fluorescence pH Sensing using p-Dibutylaminobenzoic Acid-β-cyclodextrin Inclusion Complex

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Chinese Chemical Letters 2003年第5期14卷 495-498页

作者： Li Rong LIN Zhao LI Wen Liang YANG Hong CHEN yun bao jiang Department of Chemistry and the MOE Key Laboratory of Analytical Sciences Xiamen UniversityXiamen 361005

The intramolecular charge transfer dual fluorescence of p-dibutylaminobenzoic acid-b-cyclodextrin inclusion complex showed a substantially higher sensitivity toward aqueous solution pH variation when compared with that of p-dibutylaminobenzoic acid alone, which established a new principle for direct CT fluorescence sensing in aqueous solution by using the CT fluorophore-cyclodextrin inclusion complex.

关键词： pH sensing dual fluorescence intramolecular charge transfer cyclodextrin inclusion complex p-dibutylaminobenzoic acid.

CaH2-promoted activity of Ni-carbonate interface for CO2 methanation

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Journal of Energy Chemistry 2025年第1期100卷 522-532页

作者： Jin-Peng Wang Guo-Cui Mao Hui-Lin jiang bao-Xia Dong yun-Lei Teng School of Chemistry and Chemical Engineering Yangzhou University

Transition metal-carbonate interfaces often act as active sites in heterogeneous catalytic *** interface between transition metal and metal carbonate exhibits a dynamic equilibrium during the CO2hydrogenation reaction,involving surface carbonate hydrogenation and ***,there have been few reports on engineering the activity of the interface between transition metal and alkaline earth metal carbonate for catalytic *** work demonstrated that the incorporation of CaH2in Ni/CaCO3enhances the CO2methanation activity of the *** CO2conversion for Ni/CaH2-CaCO3reached 68.5%at 400°C,which was much higher than that of the Ni/CaCO3（31.6%） and Ni/CaH2-CaO （42.4%） ***,the Ni/CaH2-CaCO3catalysts remained stable during the stability test for 24 h at 400°C and 8 *** research revealed that CaH2played a crucial role in promoting the activity of the Ni-carbonate interface for ***2could modify the electronic structure of Ni and tune the structural properties of CaCO3to generate medium basic sites （OH groups）,which are favorable for the activation of H2and ***-situ Fourier transform infrared spectroscopy （FTIR） analysis combined with density functional theory calculations demonstrated that CO2activation occurs at the hydroxyl group （OH） on the CaH2-modified Ni-carbonate surface,leading to the formation of CO3H****,our study has confirmed that CO2methanation over the Ni/CaH2-CaCO3catalysts proceeds via the formate pathway.

关键词： Metal hydride Ni catalysts Carbonate Metal-carbonate interface

A NEW KIND OF SURFACTANT:LONG-CHAIN ALKYLTRIPHENYLPHOSPHONIUM HALIDES Ⅲ.AN“ABNORMAL”QUENCHING OF PYRENE FLUORESCENCE BY PHOSPHONIUMS WITH DIFFERENT LENGTHS OF ALKYL CHAIN

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Chinese Chemical Letters 1991年第1期2卷 57-58页

作者： yun bao jiang Jin Gou XU GUO Zhen CHEN Department of Chemistry,Xiamen University,Xiamen361005

A study of the quenching of pyrene fluorescence by a series of alkyltriphenylphosphonium bromides indi- cated the coiling conformation of ionic surfactant in aqueous *** of pyrene excimer in cetyltriph- enylphosphoniu... 详细信息

关键词： AN QUENCHING OF PYRENE FLUORESCENCE BY PHOSPHONIUMS WITH DIFFERENT LENGTHS OF ALKYL CHAIN A NEW KIND OF SURFACTANT ABNORMAL

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以本科评估为契机,促进实验教学改革

实验技术与管理 2007年第10期 338-339页

作者：沈宝云江德保九江学院土木工程与城市建设学院

教育部对全国本科院校每5年进行1次本科教学评估,作为其中的一个重要内容,实验教学的教学效果直接关系到整个教学评估的结果。该文针对目前高校实验教学存在的一些普遍问题,制订了高校迎接本科评估中实验教学评估的一系列措施,以促进实... 详细信息

教育部对全国本科院校每5年进行1次本科教学评估,作为其中的一个重要内容,实验教学的教学效果直接关系到整个教学评估的结果。该文针对目前高校实验教学存在的一些普遍问题,制订了高校迎接本科评估中实验教学评估的一系列措施,以促进实验教学改革。

关键词：实验教学本科评估规章制度

Effects of ultrasonic-assisted extraction on bioactive compounds,volatile flavors and antioxidant activities of vine tea water extracts

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Traditional Medicine Research 2025年第1期10卷 73-81页

作者： Xiao-Long Zhou Wei-Jin jiang Ji Yu Mao-Jun Yao yun-Tong Li Hunan Provincial Key Laboratory of Research Resource Mining and High-valued Utilization on Edible&Medicinal PlantCollege of Chemistry and Chemical EngineeringJishou UniversityJishou 416000China Hunan Gaoge Dairy Co. Ltd.Changsha 410000China

Background:Ampelopsis grossedentata,vine tea,which is the tea alternative beverages in *** vine tea processing,a large amount of broken tea is produced,which has low commercial ***:This study investigates the influence of different extraction methods(room temperature water extraction,boiling water extraction,ultrasonic-assisted room temperature water extraction,and ultrasonic-assisted boiling water extraction,referred to as room temperature water extraction(RE),boiling water extraction(BE),ultrasonic assistance at room temperature water extraction(URE),and ultrasonic assistance in boiling water extraction(UBE))on the yield,dihydromyricetin(DMY)content,free amino acid composition,volatile aroma components,and antioxidant properties of vine tea ***:A notable influence of extraction temperature on the yield of vine tea extracts(P<0.05),with BE yielding the highest at 43.13±0.26%,higher than that of RE(34.29±0.81%).Ultrasound-assisted extraction significantly increased the DMY content of the extracts(P<0.05),whereas DMY content in the RE extracts was 59.94±1.70%,that of URE reached 66.14±2.78%.Analysis revealed 17 amino acids,with L-serine and aspartic acid being the most abundant in the extracts,nevertheless ultrasound-assisted extraction reduced total free amino acid *** chromatography-mass spectrometry analysis demonstrated an increase in the diversity and quantity of compounds in the vine tea water extracts obtained through ultrasonic-assisted ***,69 and 68 volatile compounds were found in URE and UBE extracts,which were higher than the number found in RE and BE *** vitro,antioxidant activity assessments revealed varying antioxidant capacities among different extraction methods,with RE exhibiting the highest DPPH scavenging rate,URE leading in ABTS•+free radical scavenging,and BE demonstrating superior ferric ion reducing antioxidant ***:The findings suggest that extraction methods signi

关键词： vine tea dihydromyricetin ultrasonic-assisted extraction volatile aroma components

Integrating lipidomics and gut microbiota to study the anti-hyperlipidemia effect of Sargentodoxae Caulis extract

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Traditional Medicine Research 2025年第1期10卷 1-11页

作者： Xiao-Xiao Zhang Li Jia Xiu-Jun Zhan Charity Ngina Qing-Rui Zhang Xiao-Ge Li Qi-bao jiang Shi Bai Miao-Miao jiang National Key Laboratory of Chinese Medicine Modernization Tianjin University of Traditional Chinese MedicineTianjin 301617China Haihe Laboratory of Modern Chinese Medicine Tianjin 301617China School of Medicine Taizhou UniversityTaizhou 318000China.

Background:Sargentodoxae Caulis(SC)is the vine stem of Sargentodoxa Cuneata(Oliv.)Rehd.&*** in ***,and it in traditional Chinese medicine has been known for promoting blood circulation and removing blood stasis as recorded in the ancient book“Illustrated Classics of Materia Medica”.It has been used effectively to treat blood stasis too in modern clinical ***,the anti-hyperlipidemia effect of SC is not fully *** paper aims at exploring the use of SC stems to improve the balance of blood lipids in the body,and its new role in treating ***:The effects of SC extract on hyperlipidemia were explored by combining lipidomics and gut ***,we explored the potential mechanism of SC in treating hyperlipidemia by pathway ***:The results showed that the stem extract of SC could restore the physiological and biochemical indices of hyperlipidemia in mice,as well as repair the morphological and structural damage to *** to the Model group,the SC extract significantly reduced the liver index,epididymal fat index,and Lee’s *** also significantly decreased serum levels of total cholesterol,triglycerides,low-density lipoprotein cholesterol,peroxisome proliferator-activated receptor gamma(PPAR-γ),D-lactate,and free fatty acids,while significantly increasing the relative content of peroxisome proliferator-activated receptor alpha(PPAR-α).These changes were statistically ***-targeted lipidomics,based on LC-MS,were utilized to investigate the lipid metabolism characteristics in serum,liver,and epididymal fat of the *** was observed that,compared to the blank group,the Model group exhibited significant changes primarily in glycerol lipids and *** treatment group also displayed alterations in these lipids.A total of 38,81,and 27 differential lipids were identified in serum,liver,and epididymal fat samples,*** these,14 common differenti

关键词： hyperlipidemia Sargentodoxae Caulis lipidomics intestinal flora

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福建某细粒石英型萤石矿浮选试验研究

化工矿物与加工 2018年第5期47卷 8-11+16页

作者：李强念保义朱达超包云江陈淑娴三明学院资源与化工学院福建省资源环境监测与可持续经营利用重点实验室

福建某细粒石英型萤石矿中CaF;和SiO;质量分数分别为32.87%和57.34%,为有效提高选矿指标,对其进行了选矿试验研究。经过1粗5精1扫、2段磨矿、中矿循环返回的闭路浮选后,获得了萤石精矿品位为97.63%、回收率为82.48%的比较理想的选矿指标。

关键词：石英型萤石浮选磨矿捕收剂

不同林分枯落物的持水性能及对表层土壤理化性状的影响

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水土保持学报 2003年第2期17卷 141-144页

作者：杨吉华张永涛李红云夏江宝山东农业大学林学院山东泰安271018

对刺槐林、麻栎林、五角枫林、黄连木林、油松林、赤松林、侧柏林、刺槐麻栎混交林的枯落物持水性能及枯落物层下的表层土壤理化性状进行了研究。结果表明:枯落物的持水性能大小顺序为刺槐林>黄连木林>刺槐麻栎混交林>五角枫林>麻栎林>... 详细信息

对刺槐林、麻栎林、五角枫林、黄连木林、油松林、赤松林、侧柏林、刺槐麻栎混交林的枯落物持水性能及枯落物层下的表层土壤理化性状进行了研究。结果表明:枯落物的持水性能大小顺序为刺槐林>黄连木林>刺槐麻栎混交林>五角枫林>麻栎林>侧柏林>赤松林>油松林;表层土壤理化性状的优劣顺序为黄连木林>刺槐林>刺槐麻栎混交林>五角枫林>麻栎林>侧柏林>赤松林>油松林。

关键词：林分枯落物持水性能表层土壤土壤理化性状

马斯平与凯福隆随机对照治疗老年细菌性下呼吸道感染临床分析

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江苏临床医学杂志 2001年第1期5卷 28-30页

作者：包云蒋有娟申彤蕾李鸣扬州市第一人民医院扬州225001

目的 :评价马斯平治疗老年细菌性下呼吸道感染的临床疗效和安全性。方法 :将 68例老年细菌性下呼吸道感染患者随机分为试验组和对照组 ,分别给马斯平或凯福隆治疗。结果 :两组痊愈率分别为 5 8 8%和 2 6 5 % ,总有效率分别为91 2 %和 67... 详细信息

目的 :评价马斯平治疗老年细菌性下呼吸道感染的临床疗效和安全性。方法 :将 68例老年细菌性下呼吸道感染患者随机分为试验组和对照组 ,分别给马斯平或凯福隆治疗。结果 :两组痊愈率分别为 5 8 8%和 2 6 5 % ,总有效率分别为91 2 %和 67 6% ;治疗后细菌清除率分别为 89 7%和 63 3 % ,两组比较无显著性差异。结论 :马斯平抗菌谱广 ,疗效好 ,不良反应轻微 ,对老年细菌性下呼吸道感染是一种安全、有效的治疗药物。

关键词：马斯平凯福隆老年人下呼吸道感染临床疗效安全性