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熊去氧胆酸联合常规西医治疗胆汁反流性胃炎合并幽门螺旋杆菌感染的疗效及对IL-8、PGE2的影响 被引量:1
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作者 赵星 《中华养生保健》 2024年第1期168-171,共4页
目的探讨熊去氧胆酸联合常规西医治疗胆汁反流性胃炎(BRG)合并幽门螺旋杆菌(Hp)感染的疗效及对白细胞介素-8(IL-8)、PGE2(前列腺素E2)的影响。方法选取2019年5月—2021年5月巴彦淖尔市医院收治的100例Hp呼吸试验为阳性的BRG患者进行研究... 目的探讨熊去氧胆酸联合常规西医治疗胆汁反流性胃炎(BRG)合并幽门螺旋杆菌(Hp)感染的疗效及对白细胞介素-8(IL-8)、PGE2(前列腺素E2)的影响。方法选取2019年5月—2021年5月巴彦淖尔市医院收治的100例Hp呼吸试验为阳性的BRG患者进行研究,应用随机数表法将其分为观察组与对照组,每组50例。对照组采取常规西医治疗(克拉霉素+奥美拉唑+阿莫西林),观察组在常规西医治疗基础上增加熊去氧胆酸素治疗,对比两组患者临床疗效,并应用酶联免疫吸附法检测治疗前后血清白细胞介素-8(IL-8)、PGE2(前列腺素E2)表达水平,对比胃泌素(GAS)、胃动素(MTL)、胆囊收缩素(CCK)表达水平以及不良反应情况。结果观察组治疗总有效率明显高于对照组,差异有统计学意义(P<0.05);治疗后两组患者血清IL-8水平降低,观察组低于对照组,PGE2水平升高,观察组高于对照组(P<0.05);治疗后两组患者血清CCK水平降低,观察组低于对照组,MTL、GAS水平升高,观察组高于对照组,差异有统计学意义(P<0.05);两组患者均无严重不良反应发生,且轻度不良反应比较,差异无统计学意义(P>0.05),但观察组Hp根除率高于对照组(P<0.05)。结论对胆汁反流性胃炎合并Hp感染患者在常规西医治疗的基础上增加熊去氧胆酸能够提升其临床疗效,降低患者炎症反应,提升胃动力,调节胃肠激素,提升Hp根除率,且安全性较高。 展开更多
关键词 熊去氧胆酸 胆汁反流性胃炎 幽门螺旋杆菌感染 白细胞介素-8 前列腺素E_(2)
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Corrosion Inhibition Synergism between Lanthanum(Ⅲ) Ion and 8-Hydroxyquinoline for Zinc in Hydrochloric Acid 被引量:6
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作者 木冠南 唐丽斌 李学铭 《Journal of Rare Earths》 SCIE EI CAS CSCD 2002年第5期502-506,共5页
The effects of La 3+ ion and chelate reagent 8 hydroxyquinoline on the corrosion rate of zinc in hydrochloric acid were investigated by using weight loss method and electrochemical method. It is found that in a ... The effects of La 3+ ion and chelate reagent 8 hydroxyquinoline on the corrosion rate of zinc in hydrochloric acid were investigated by using weight loss method and electrochemical method. It is found that in a specific concentration range of La 3+ ion and 8 hydroxyquinoline, the obvious corrosion inhibition synergism is obtained. The mechanism of corrosion inhibition synergism was discussed on basis of adsorption theory. 展开更多
关键词 rare earths 8 hydroxyquinoline corrosion inhibition synergism ZINC hydrochloric acid
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Thermochemical Study on Coordination Complex of Samarium with Salicylic Acid and 8-Hydroxyquinoline 被引量:2
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作者 魏得良 李强国 +5 位作者 黄熠 李旭 叶丽娟 肖圣雄 杨德俊 刘义 《Journal of Rare Earths》 SCIE EI CAS CSCD 2007年第2期253-256,共4页
The coordination complex Sm(C7H5O2)2·(C9H6NO), synthesized from the reaction of samarium chloride sixhydrate with salicylic acid and 8-hydroxyquinoline, was characterized with IR, elemental analysis, molar co... The coordination complex Sm(C7H5O2)2·(C9H6NO), synthesized from the reaction of samarium chloride sixhydrate with salicylic acid and 8-hydroxyquinoline, was characterized with IR, elemental analysis, molar conductance, and thermogravimatric analysis. The standard molar enthalpies of solution of [ SmCl3·6H2O (s) ], [ 2C7H6O3 (s) ], [ C9H7NO ( s ) ] and [ Sm (C7H5O3) 2·( C9H6NO ) ( s ) ] in the calorimetric solvent were determined with the solution-reaction isoperibol calorimeter at 298.15 K to be △sHm^- [ SmCl3·6H2O (s), 298.15 K ] = - 103.98 ± 0.04 kJ·mol^-1, △sHm^- [2 C7H6O3 (s), 298.15 K] = 16.35±0.14 kJ·mol^-1,△sHm^-[C9H7NO (s), 298.15 K] = -6.11±0.08 kJ·mol^-1 and △sHm^-[Sm(C7H5O3)2·(C9H6NO) (s), 298.15 K] = - 130.08 ± 0.04 kJ·mol^-1, respectively. The enthalpy was determined to be △rHm^- = 89.59 ±0.18 kJ·mol^-1 for the reaction SmCl3·6H2O(s) + 2C7H6O3(s) + C9H7NO(s) = Sm (C7H5O3) 2·(C9H6NO) ( s ) + 3HCl (g) + 6H2O ( l ). According to the above results and the data given in literature and through Hess' law, the standard molar enthalpy of formation of Sin( C7H5O3 )2·(C9H7NO)(s) was estimated to be △rHm^- [ Sm (C7H5O3)2·(C9H6NO) (s), 298.15 K] = - 2055.9 ± 3.03 kJ·mol^-1. 展开更多
关键词 samarium complex salicylic acid 8-HYDROXYQUINOLINE standard molar enthalpies of formation rare earths
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An 8-Connected Chiral Lanthanide Metal-organic Framework Constructed from Naturally Camphoric Acid:Crystal Structure,Vibrational Circular Dichroism Spectroscopy and Second-order Nonlinear Optical Effect 被引量:2
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作者 梁晓强 吴涛 樊增禄 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2016年第11期1736-1744,共9页
A chiral lanthanide metal-organic framework based on enantiopure camphoric acid (D-H2cam), [Nd3(D-cam)8(H2O)4Cl]n (1), has been synthesized and characterized by single-crystal X-ray structural analysis, elemen... A chiral lanthanide metal-organic framework based on enantiopure camphoric acid (D-H2cam), [Nd3(D-cam)8(H2O)4Cl]n (1), has been synthesized and characterized by single-crystal X-ray structural analysis, elemental analysis, IR, thermal gravimetric, and X-ray powder diffraction. Crystal data for the title compound are as follows: orthorhombic system, space group P212121 with a = 13.8287(7), b = 14.0715(7), c = 25.7403(12) A^°, V = 5008.8(4) A^°3, Mr = 1333.08, Z = 4, F(000) = 2644, Dc = 1.768 g/cm^3, μ(MoKα) = 3.189 mm^-1, the final R = 0.0351 and wR = 0.0814 (I 〉 2σ(I)). Compound 1 displays an 8-connected bcu topology 3D framework and hydrogen-bonding interactions stabilize the solid-state structure. The vibrational circular dichroism (VCD) spectrum and second-order nonlinear optical effect of compound 1 have been studied in the solid state. 展开更多
关键词 homochiral lanthanide metal-organic framework D-camphoric acid 8-connected VCD spectrum second-order nonlinear optical effect
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RNAi-mediated suppression of the abscisic acid catabolism gene Os ABA8ox1 increases abscisic acid content and tolerance to saline–alkaline stress in rice(Oryza sativa L.) 被引量:8
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作者 Xiaolong Liu Xianzhi Xie +6 位作者 Chongke Zheng Lixing Wei Xiaowei Li Yangyang Jin Guohui Zhang Chang-Jie Jiang Zhengwei Liang 《The Crop Journal》 SCIE CSCD 2022年第2期354-367,共14页
Saline–alkaline(SA) stress is characterized by high salinity and high alkalinity(high p H), which severely inhibit plant growth and cause huge losses in crop yields worldwide. Here we show that a moderate elevation o... Saline–alkaline(SA) stress is characterized by high salinity and high alkalinity(high p H), which severely inhibit plant growth and cause huge losses in crop yields worldwide. Here we show that a moderate elevation of endogenous abscisic acid(ABA) levels by RNAi-mediated suppression of Os ABA8 ox1(Os ABA8 ox1-kd), a key ABA catabolic gene, significantly increased tolerance to SA stress in rice plants. We produced Os ABA8 ox1-kd lines in two different japonica cultivars, Dongdao 4 and Nipponbare. Compared with nontransgenic control plants(WT), the Os ABA8 ox1-kd seedlings accumulated 25.9%–55.7% higher levels of endogenous ABA and exhibited reduced plasmalemma injury, ROS accumulation and Na;/K;ratio, and higher survival rates, under hydroponic alkaline conditions simulated by 10, 15, and 20 mmol L-1 of Na;CO;. In pot trials using SA field soils of different alkali levels(p H 7.59, 8.86, and 9.29), Os ABA8 ox1–kd plants showed markedly higher seedling survival rates and more vigorous plant growth, resulting in significantly higher yield components including panicle number(85.7%–128.6%), spikelets per panicle(36.9%–61.9%), branches(153.9%–236.7%), 1000–kernel weight(20.0%–28.6%), and percentage of filled spikelets(96.6%–1340.8%) at harvest time. Under severe SA soil conditions(p H = 9.29, EC = 834.4 μS cm-1),Os ABA8 ox1-kd lines showed an 194.5%–1090.8% increase in grain yield per plant relative to WT plants.These results suggest that suppression of Os ABA8 ox1 to increase endogenous ABA levels provides a new molecular approach for improving rice yield in SA paddies. 展开更多
关键词 Rice(Oryza sativa L.) Saline–alkaline stress Abscisic acid(ABA) OsABA8ox1-kd Endogenous ABA levels
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Biodegradation of ferulic acid by a newly isolated strain of Cupriavidus sp. B-8 被引量:3
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作者 CHAI Li-yuan ZHANG Huan +4 位作者 YANG Wei-chun ZHU Yong-hua YANG Zhi-hui ZHENG Yu CHEN Yue-hui 《Journal of Central South University》 SCIE EI CAS 2013年第7期1964-1970,共7页
As a major component of lignin and abundantly existing in softwood and hardwood, ferulic acid has been used as a lignin-related compound for lignin biodegradation study. Biodegradation of ferulic acid by Cupriavidus s... As a major component of lignin and abundantly existing in softwood and hardwood, ferulic acid has been used as a lignin-related compound for lignin biodegradation study. Biodegradation of ferulic acid by Cupriavidus sp. B-8, a newly isolated strain, was studied. This strain is able to utilize a wide range of lignin-related aromatic compounds as the sole carbon and energy source, including guaiacol, veratric acid, vanillic acid, cinnamic acid, p-coumaric acid, ferulic acid, and sinapic acid. In addition, the effects of different concentrations of ferulic acid on growth of Cupriavidus sp. B-8 were studied. The growth of Cupriavidus sp. B-8 is better under the condition of lower concentration. High-performance liquid chromatography (HPLC) analysis reveals that above 95% of ferulic acid is degraded within 12 h by Cupriavidus sp. B-8. Based on identification of biodegradation intermediates and further metabolites, the biodegradation pathway of ferulic acid by Cupriavidus sp. B-8 was proposed. Ferulic acid is initially converted to 4-vinylguaiacol, and further oxidized to vanillic acid and protocatechuic acid. 展开更多
关键词 Cupriavidus sp. B-8 lignin biodegradation ferulic acid gas chromatography and mass spectrometry
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Synergistic extraction of praseodymium with 2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester and 8-Hydroxyquinoline 被引量:1
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作者 张倩 乌东北 包伯荣 《Journal of Shanghai University(English Edition)》 CAS 2009年第1期72-75,共4页
The synergistic extraction of Pr^3+ from hydrochloric medium using mixture of 2-ethylhexyl phosphonic acid mono- 2-ethylhexyl ester (P507, HL) and 8-Hydroxyquinoline (HQ) in heptane was investigated. The effect o... The synergistic extraction of Pr^3+ from hydrochloric medium using mixture of 2-ethylhexyl phosphonic acid mono- 2-ethylhexyl ester (P507, HL) and 8-Hydroxyquinoline (HQ) in heptane was investigated. The effect of equilibrium of aqueous acidity on extraction of Pr^3+ was discussed. The effect of extractant concentraction, different diluents, equilibrium time and acetate ion concentration oil extraction reaction were also studied. With a method of double-logarithmic slope, composition of the extracted species on 2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester and 8-Hydroxyquinoline was derived. The result shows that the synergistic extraction system not only overcomes emulsification of 8-Hydroxyquinoline, but also shows perfect capacity of synergistic extraction. The largest synergistic enhancement factor can be calculated to be 5.49 at pH 3.6 for Pr^3+. 展开更多
关键词 2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester 8-Hydroxyquinoline (HQ) synergistic extraction praseodymium
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CRYSTAL STRUCTURE OF BINUCLEAR Y(Ⅲ) COMPLEX WITH p-METHYLBENZOIC ACID, Y_2(p-CH_3C_6H_4COO)_6(C_(12)H_8N_2)_2 被引量:1
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作者 Rui Fen WANG Lin Pei JIN +3 位作者 Ming Zhao WANG Guan Liang CAI Shi Xiong LIU Jin Ling HUANG 《Chinese Chemical Letters》 SCIE CAS CSCD 1991年第11期861-862,共2页
Y_2(p-CH_3C_6H_4COO)_6(C_(12)H_8N_2)_2, Mr=1349.08, triclinic, space group P, a=13.00(3), b=19.743(2), c=12.754(3)A, α=97.94(1), β=106.24(2), γ=91.66(1)°, V=3177(1)~3, Z=2, Dc=1.41gcm^(-3), λ(MoKα)=0.71069, ... Y_2(p-CH_3C_6H_4COO)_6(C_(12)H_8N_2)_2, Mr=1349.08, triclinic, space group P, a=13.00(3), b=19.743(2), c=12.754(3)A, α=97.94(1), β=106.24(2), γ=91.66(1)°, V=3177(1)~3, Z=2, Dc=1.41gcm^(-3), λ(MoKα)=0.71069, μ=18.92 cm^(-1), F(ooo)=1384, T=295K, final R=0.073 for 6504 observed reflections with Ⅰ>36(Ⅰ). There are two nonidentical binuclear molecules with different bridging connection patterns in a cell. One has four bridging carboxyl groups bound two Y(Ⅲ) ions and another only has two. The Y-Y distance is 4.196 for the former and 5.302 for the latter respectively. 展开更多
关键词 p-CH3C6H4COO CRYSTAL STRUCTURE OF BINUCLEAR Y H8N2 Y2 COMPLEX WITH p-METHYLBENZOIC acid CH
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Structural and Vibrational Study of 2-(Quinolin-8-yloxy)-Acetic Acid based on FT-IR-Raman Spectroscopy and DFT Calculations 被引量:1
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作者 Gerardo R. Arganaraz Elida Romano +1 位作者 Juan Zinczuk Silvia A. Brandan 《Journal of Chemistry and Chemical Engineering》 2011年第8期747-758,共12页
We have prepared the 2-(quinolin-8-yloxy)-acetic acid and characterized it by infrared and Raman spectroscopies in the solid phase. The Density Functional Theory (DFT) method, together with the 6-31G^* and 6-311... We have prepared the 2-(quinolin-8-yloxy)-acetic acid and characterized it by infrared and Raman spectroscopies in the solid phase. The Density Functional Theory (DFT) method, together with the 6-31G^* and 6-311++ G^** basis sets, show that three stable molecules, for the anhydrous and monohydrated compounds were theoretically determined in the gas phase, and that probably the two more stable conformations are present in the solid phase of the monohydrated compound. The harmonic vibrational wavenumbers for the optimized geometries were calculated at B3LYP/6-31G^*and B3LYP/6-311++G^** levels. For a complete assignment of all the observed bands in the vibrational spectra the DFT calculations were combined with Pulay's scaled quantum mechanical force field (SQMFF) methodology in order to fit the theoretical Wavenumber values to the experimental ones. The characteristics of the electronic delocalization of all structures of both forms were performed by using natural bond orbital (NBO), while the corresponding topological properties of electronic charge density are analysed by employing Bader's atoms in molecules theory (AIM). 展开更多
关键词 2-(Quinolin-8-yloxy)-acetic acid vibrational spectra molecular structure force field DFT calculations
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EXPRESSION OF IL-6, sgp130, IL-8 AND THEIR RECEPTORS INACUTE PROMYELOCYTIC LEUKEMIA DURING ALL-TRANSRETINOIC ACID INDUCTION TREATMENT
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作者 曾慧兰 张学光 +7 位作者 陈子兴 陶瑞芳 邱月华 张毅 孙爱宁 王爱青 王玮 林宝爵 《Chinese Journal of Cancer Research》 SCIE CAS CSCD 1999年第4期271-274,共4页
Objective: To evaluate the expression and its clinical significance of interleukin 6 (IL-6), soluble glycoprotein 130 (sgp130), interleukin 8 (IL-8) and type A interleukin 8 receptor (IL-8RA) in acute promyelocytic le... Objective: To evaluate the expression and its clinical significance of interleukin 6 (IL-6), soluble glycoprotein 130 (sgp130), interleukin 8 (IL-8) and type A interleukin 8 receptor (IL-8RA) in acute promyelocytic leukemia (APL) patients during all-trans retinoic acid (ATRA) induction treatment. Methods: Plasma and bone marrow mononuclear cell (MNC) culture supernatant IL-6, sgp130, IL-8 concentration of 18 cases with APL were kinetically measured in vivo and in vitro (ELISA). Bone marrow MNC IL-8RA was measured by flow cytometry after being cultured with ATRA (10?6mmol/L). Results: Plasma IL-6, sgp130, IL-8 levels were higher than normal (P<0.05), IL-6, spg130 levels correlated with white blood cell (WBC) counts (P<0.05) while IL-8 levels correlated with body temperature (P<0.05) at initial diagnosis. After 72-hour incubation with ATRA, concentration of IL-6 of bone marrow MNC culture supernatant did not change, that of sgp130 mildly decreased, and IL-8 significantly decreased while the positive rate of IL-8RA on bone marrow MNC increased. During ATRA treatment, plasma IL-6 changes were correlated with WBC counts. Peak levels of IL-6 and WBC were lower in patients who received intermittent therapy than those who received continuous therapy. Plasma IL-6 and IL-8 were increased when complicated with infection and IL-8 seemed more sensitive. Conclusion: Plasma IL-6, sgp130, IL-8 levels may reflect patients' responsiveness to ATRA treatment, and could be used to predict hyperleukocytosis and intercurrent infection. ATRA induces APL cell differentiation possibly via sgp130 signal transducer chain. Measurement of sgp130 had certain meaning to prognosis. 展开更多
关键词 LEUKEMIA Premyelocytic Retinoic acid IL-6 Glycoprotein-130 IL-8 Receptor
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Thermochemical Study on Coordination Complex of Neodymium Trichloroacetic Acid with 8-Hydroxyquinoline
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作者 李强国 屈松生 刘义 《Journal of Rare Earths》 SCIE EI CAS CSCD 2002年第5期443-448,共6页
Two coordinate reactions, NdCl 3·6H 2O(s) +3CCl 3COOH(s)( or TCA) =Nd(TCA) 3·3H 2O(s) +3HCl(g) +3H 2O(l) and Nd(TCA) 3·3H 2O(s) +2C 9H 7NO(s)= Nd(TCA)(C 9H 6NO) 2 (s) +2CCl 3COOH(s) +3H ... Two coordinate reactions, NdCl 3·6H 2O(s) +3CCl 3COOH(s)( or TCA) =Nd(TCA) 3·3H 2O(s) +3HCl(g) +3H 2O(l) and Nd(TCA) 3·3H 2O(s) +2C 9H 7NO(s)= Nd(TCA)(C 9H 6NO) 2 (s) +2CCl 3COOH(s) +3H 2O(l), were studied by the classical solution calorimetry at 298.15K. The molar dissolution enthalpies of the reactants and the products in certain solvent (the first reaction in 1 mol·L -1 HCl, the second in a mixed solution consisting of absolute ethyl alcohol, dimethyl sulfoxide and 4 mol·L -1 HCl ) were measured by using an isoperibol calorimeter at 298.15K . From the results and other auxiliary quantities, the standard molar formation enthalpies of [Nd(TCA) 3·3H 2O,s,298.15K] and [Nd(TCA) (C 9H 6NO) 2 ,s, 298.15K] are determined as Δ fH m °[Nd(TCA) 3·3H 2O,s,298.15K]= -3053.3 kJ·mol -1 and Δ fH m° [Nd(TCA) (C 9H 6NO) 2 ,s, 298.15K] = -1355.6 kJ·mol -1 . 展开更多
关键词 rare earths neodymium chloride six hydrate trichloroacetic acid 8 hydroxyquinoline coordination complex THERMOCHEMISTRY
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A Hydrogen Bond Stabilized 3D Network Built from Pyrazine-2,3,5,6-tetracarboxylic Acid and 8-Hydroxyquinoline
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作者 徐峰 魏振宏 +2 位作者 黄祥雷 梅应轩 蔡琥 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2015年第12期1845-1850,共6页
8-Hydroxyquinoline salt of pyrazine-2,3,5,6-tetracarboxylic acid [HQ]2[H2pztc]· 2H2O (1) was prepared and characterized by single-crystal X-ray diffraction, NMR, IR, TGA, elemental analysis and fluorescent meas... 8-Hydroxyquinoline salt of pyrazine-2,3,5,6-tetracarboxylic acid [HQ]2[H2pztc]· 2H2O (1) was prepared and characterized by single-crystal X-ray diffraction, NMR, IR, TGA, elemental analysis and fluorescent measurements. Compound 1 crystallizes in orthorhombic, space group Pbcn with a = 9.953(3), b = 15.966(3), c = 16.081(5) A, V = 2555.5(13) A3, Z = 4, μ = 0.122 mm^-1, Dc = 1.514 Mg/m3, T= 296(2) K, C26H22N4O12, Mr = 582.48, F(000) = 1208, S = 1.006, R = 0.0448 and wR = 0.1149. Compound 1 has a three-dimensional (3D) network, in which pyra- zine-2,3,5,6-tetracarboxylic acids build up two-dimensional (2D) sheets and 8-hydroxyquinoline cations and water molecules act as pillars to connect the 2D sheets into an extended 3D network through strong intermolecular hydrogen bonding and π…π stacking interactions. Especially, a very short O-H…O hydrogen bond (O…O 2.470(2) A) between two neighboring [H2pztc] anions was observed. 展开更多
关键词 pyrazine-2 3 5 6-tetracarboxylic acid 8-HYDROXYQUINOLINE hydrogen bond
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Spectrofluorimetric Determination of Magnesium (Ⅱ) with 7-(8-Hydroxy-3, 6-Disulfonaphthylazo)-8-Hydroxyquinoline-5-Sulfonic Acid
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作者 Zhang Xian, Wang Hong, Zhang Hua shan College of Chemisitry and Molecular Science, Wuhan University, Wuhan 430072, China 《Wuhan University Journal of Natural Sciences》 CAS 2001年第4期831-835,共5页
A new fluorescent reagent, 7 (8 hydroxy 3, 6 disulfonaphthylazo) 8 hydroxyquinoline 5 sulfonic acid (HDNHQ) for the determination of magnesium has been developed. It reacted with magnesium to form a 1∶1 fluor... A new fluorescent reagent, 7 (8 hydroxy 3, 6 disulfonaphthylazo) 8 hydroxyquinoline 5 sulfonic acid (HDNHQ) for the determination of magnesium has been developed. It reacted with magnesium to form a 1∶1 fluorescent complex with λ ex / λ em =356/495 nm immediately at room temperature in ammonia ammonium chloride buffer (pH 10.7). A linear relationship was obtained in the magnesium concentration range of 0 160 ng·mL -1 with the detection limit of 0.04 ng·mL -1 . The proposed method was simple, rapid and sensitive. It has been successfully applied to the determination of trace magnesium in blood serum with recoveries of 103.75% and 98.16%, respectively. 展开更多
关键词 Hydroxy 3 6 disulfonaphthylazo) 8 hydroxyquinoline 5 sulfonic acid magnesium SPECTROFLUORIMETRY blood serum
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A New 3D Pb(Ⅱ) Coordination Polymer [Pb(L)]_n Based on a Long Flexible Octane-1,8-dicarboxylic Acid:Crystal Structure and Physical Properties
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作者 韩倩 郭胜男 王秀艳 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2015年第11期1756-1760,共5页
A new Pb(II)-based coordination polymer, [Pb(L)]n (1), was hydrothermally synthesized and its structure was determined by single-crystal X-ray diffraction (H2L = octane- 1,8-dicarboxylic acid). Compound 1 crys... A new Pb(II)-based coordination polymer, [Pb(L)]n (1), was hydrothermally synthesized and its structure was determined by single-crystal X-ray diffraction (H2L = octane- 1,8-dicarboxylic acid). Compound 1 crystallizes in orthorhombic, space group Pnma with a = 32.061(4), b = 7.2597(8), c = 4.8084(5) A, V= 1119.2(2) A3, Z = 4, C10H1604Pb, Mr = 407.42, Dc = 2.418 g/cm3, F(000) = 760, μ(MoKa) = 15.066 mm-1, R = 0.0270 and wR = 0.0666. In 1, each Pb(II) cation is coordinated by six carboxylate oxygen atoms from four L2- anions. Each L2- anion bridges three Pb(ll) atoms in a μ3:η2:η1:η1 mode to form a 3D framework. The structure of 1 was characterized by IR spectrum and thermogravimetric analysis. Moreover, solid state luminescent property of 1 was also investigated. 展开更多
关键词 crystal structure Pb(Ⅱ)-based coordination polymer octane-1 8-dicarboxylic acid luminescent property
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A CONVENIENT SYNTHESIS OF 8-ALKYL S'-ALKYL (ARYL) DITHIOPHOSPHORIC ACID DERIVATIVES
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作者 Chu Chi TANG Gui Ping WU 《Chinese Chemical Letters》 SCIE CAS CSCD 1992年第10期783-784,共2页
The chlorination of S-alkyl(aryl) 0,0-dialkyl dithiophosphates with phosphorus oxychloride proceeds with isomerization to give S-alkyl S'-alkyl(aryl) dithiophosphorochtoridates, which react further with various nu... The chlorination of S-alkyl(aryl) 0,0-dialkyl dithiophosphates with phosphorus oxychloride proceeds with isomerization to give S-alkyl S'-alkyl(aryl) dithiophosphorochtoridates, which react further with various nucleophiles in the presence of base to give the title compounds 展开更多
关键词 acid ARYL DITHIOPHOSPHORIC acid DERIVATIVES A CONVENIENT SYNTHESIS OF 8-ALKYL S ALKYL
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亚油酸诱导植物乳杆菌p-8产生共轭亚油酸的蛋白组和类组蛋白乙酰化分析
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作者 李瑞华 秦雅丽 +2 位作者 董其格其 张和平 赵国芬 《食品科学》 EI CAS CSCD 北大核心 2024年第17期71-79,共9页
研究亚油酸(linoleic acid,LA)诱导下植物乳杆菌(Lactobacillus plantarum)p-8的蛋白组和类组蛋白乙酰化水平差异,探究共轭亚油酸(conjugated linoleic acid,CLA)产生的机制。结果表明,LA的最佳诱导质量浓度为1 mg/mL,在此质量浓度条件... 研究亚油酸(linoleic acid,LA)诱导下植物乳杆菌(Lactobacillus plantarum)p-8的蛋白组和类组蛋白乙酰化水平差异,探究共轭亚油酸(conjugated linoleic acid,CLA)产生的机制。结果表明,LA的最佳诱导质量浓度为1 mg/mL,在此质量浓度条件下,蛋白质组学分析发现,烯酰-酰基载体蛋白还原酶、酰基载体蛋白等脂肪酸合成的关键蛋白因子下调,脂肪酸合成下调,乙酰基转移酶水平上调。Western blot结合体外添加NaAc实验表明,乙酰辅酶A含量增加导致类组蛋白乙酰化水平提升。实时聚合酶链式反应检测显示,添加LA和NaAc使CLA相关酶、转录调控因子和Sigma因子的mRNA表达升高,CLA含量也提高。相关性分析得出,乙酰辅酶A与LA水合酶转录水平和CLA含量之间呈显著正相关,揭示乙酰辅酶A和乙酰基转移酶含量上调导致类组蛋白乙酰化加强而上调CLA合成。结果为分子改良或科学调控乳酸菌以提高CLA转化率奠定了基础。 展开更多
关键词 亚油酸 共轭亚油酸 植物乳杆菌p-8 蛋白组 类组蛋白乙酰化
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Evaluation of the Anti-Inflammatory Activities of 5,8,11-<i>cis</i>-Eicosatrienoic Acid
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作者 Lun-Chung Hsu Zhi-Hong Wen +3 位作者 Han-Min Chen Han-Tzo Lin Chi-Ming Chiu Hui-Chung Wu 《Food and Nutrition Sciences》 2013年第9期113-119,共7页
The main eicosanoids inflammatory mediators, prostaglandins and leukotrienes, are both generated from arachidonic acid (AA;20:4 n-6). AA is a member of polyunsaturated fatty acids (PUFAs). Numerous studies have demons... The main eicosanoids inflammatory mediators, prostaglandins and leukotrienes, are both generated from arachidonic acid (AA;20:4 n-6). AA is a member of polyunsaturated fatty acids (PUFAs). Numerous studies have demonstrated that various contents of PUFAs can modulate the inflammatory responses. However, fewer studies have examined n-9PUFAs and their effects on the inflammatory responses. In the present study, the role of 5,8,11-cis-eicosatrienoic acid (ETrA;20:3 n-9, also called Mead acid) in the inflammatory responses has been investigated. The anti-inflammatory activities of ETrA were examined using an in vitro macrophage system and the inhibitory effect was confirmed by western blot analysis for iNOS and COX-2 expressions. The interactions between ETrA and COX-2 protein were simulated to produce a computer modeling protein-ligand complexes and the results suggest a possible mechanism for the effects of ETrA. In this study, we described a significant inhibition of the inflammatory activities initiated by ETrA. Since ETrA is a substance presented in the tissues of young animals, we therefore anticipate that ETrA can be utilized as a natural therapeutic supplement to inhibit inflammatory activities. 展开更多
关键词 5 8 11-cis-Eicosatrienoic acid ANTI-INFLAMMATORY Activities COX-2 INOS PUFAS
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Synthesis of (R)(E)-3,7-Dimethyl-2-octene-1,8-dioic Acid, a Copulation Released Pheromone Component of Azuki Bean Weevil
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作者 YU Guang-ao HUANG Jin-xia +2 位作者 HOU Jun-li Li Yan XU Zhang-huang 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2002年第4期397-399,共3页
Started from 5-hydroxy-2-pentanone, (R)(E)-3,7-dimethyl-2-octene-1,8-dioic acid, callosobruchusic acid, was synthesized via five steps with D-(-)-camphor sultam as the chiral auxiliary. It was of good optical purity a... Started from 5-hydroxy-2-pentanone, (R)(E)-3,7-dimethyl-2-octene-1,8-dioic acid, callosobruchusic acid, was synthesized via five steps with D-(-)-camphor sultam as the chiral auxiliary. It was of good optical purity and yield. 展开更多
关键词 Synthesis (R)(E)-3 7-Dimethyl-2-octene-1 8-dioic acid Copulation released pheromone
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Two Novel Mercury(Ⅱ) and Copper(Ⅱ) Complexes Based on(5-Chloro-quinolin-8-yloxy)acetic Acid
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作者 赵腾 王玉红 宋瑞峰 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2016年第7期1137-1144,共8页
Two novel mononuclear complexes with 5-chloro-8-(methoxycarbonylmethoxy)quinoline ligand(L), namely, HgLBr2 1 and CuL2Cl2 2, have been prepared by solvothermal reaction of(5-chloro-quinolin-8-yloxy)acetic acid w... Two novel mononuclear complexes with 5-chloro-8-(methoxycarbonylmethoxy)quinoline ligand(L), namely, HgLBr2 1 and CuL2Cl2 2, have been prepared by solvothermal reaction of(5-chloro-quinolin-8-yloxy)acetic acid with HgBr2 and CuCl2, respectively. Their structures were characterized by IR, elemental analysis, UV-Vis-NIR spectra, TG and single-crystal X-ray diffraction analysis. Interestingly,(5-chloro-quinolin-8-yloxy)acetic acid is changed as 5-chloro-8-(methoxycarbonylmethoxy)quinoline ligand(L) in complexes 1 and 2. Crystal data for 1: C12H10Br2 Cl Hg NO3, Mr = 612.07, triclinic, space group P1 with a = 8.5983(7), b = 9.7726(6), c = 10.1549(6) A, α = 66.355(6), β = 77.067(8), γ = 78.803(8)°, V = 756.6(9)A^3, Z = 2, Dc = 2.687 g/cm^3, F(000) = 560, μ = 15.633 mm^-1, R = 0.0351 and w R = 0.0504. Crystal data for 2: C24H20Cl4 Cu N2O6, Mr = 637.76, triclinic, space group P1 with a = 10.5324(9), b = 11.2377(16), c = 12.0143(12) ?, α = 83.413(11), β = 64.475(9), γ = 83.144(11)°, V = 1270.9(2) ?3, Z = 2, Dc = 1.667 g/cm3, F(000) = 646, μ = 1.324 mm-1, R = 0.0408 and wR = 0.0922. In 1, the HgII centre is a distorted trigonal planar geometry comprised of two Br atoms and one quinoline N atom of L. Intermolecular π-π, C–H…π stacking interactions and intermolecular C–H…Br hydrogen bonds are observed in the molecular packing of 1. In complex 2, each CuII center has a distorted octahedral geometry comprised of two chloride ions, two quinoline N atoms and two O atoms of two L ligands. Intermolecular C–H…Cl hydrogen bonds exist in the molecular packing of 2. The fluorescence emission peak of complexes 1 and 2 appears near 406 and 410 nm, respectively. Optical diffuse-reflection spectral results suggest complex 1 has the property of semiconductor. 展开更多
关键词 copper(Ⅱ) complex mercury(Ⅱ) complex crystal structure (5-chloro-quinolin-8-yloxy) acetic acid solvothermal synthesis
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8%盐酸脱钙液处理骨髓组织时长与染色效果的探索
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作者 孙改霞 钟定荣 +3 位作者 陈煌 刘博 刘军超 张凡 《诊断病理学杂志》 2024年第6期494-497,531,共5页
目的探索8%盐酸脱钙液处理骨髓组织不同时长的染色效果。方法收集骨髓组织活检标本180例,利用8%盐酸脱钙液分别在70 min,90 min,110 min处理骨髓组织,观察不同脱钙处理时长的骨髓组织HE染色、免疫组织化学染色(EnVision法染TdT、CD56、M... 目的探索8%盐酸脱钙液处理骨髓组织不同时长的染色效果。方法收集骨髓组织活检标本180例,利用8%盐酸脱钙液分别在70 min,90 min,110 min处理骨髓组织,观察不同脱钙处理时长的骨髓组织HE染色、免疫组织化学染色(EnVision法染TdT、CD56、MPO)和特殊染色(Gomori网状纤维染色)效果。结果8%盐酸脱钙液处理90 min与70 min和110 min相比,骨髓组织石蜡切片组织结构保持较完整,HE染色后形态结构清晰可辨,对比度较好,免疫组化染色定位准确、背景清楚,网状纤维染色粗细清晰可辨。结论8%盐酸脱钙液对骨髓组织90 min脱钙效果较好。 展开更多
关键词 骨髓组织 8%盐酸脱钙液 HE染色 网状纤维染色 免疫组化染色
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