检索结果-南通市图书馆

新型炭材料 2018年第1期33卷 97-100页

作者： Chuan-zhang Ge Zhen-long Sun Hai-xiao Yang Dong-hui Long Wen-ming Qiao Li-cheng Ling State Key Laboratory of Chemical Engineering East China University of Science and TechnologyShanghai 200237China Shanghai Key Laboratory of Multiphase Materials Chemical Engineering East China University of Science and TechnologyShanghai 200237China

摘要: 以乙烯渣油减压蒸馏重组分（ET-HR）为原料，采用溴化/脱溴聚合两步法制备了新型高软化点各向同性沥青，研究了溴化温度和溴引入量对所得产品性质参数的影响。GCMS与LDI TOF/MS测试结果表明，ET-HR主要由富含饱和脂肪侧链的3-6环... 详细信息

摘要: 以乙烯渣油减压蒸馏重组分（ET-HR）为原料，采用溴化/脱溴聚合两步法制备了新型高软化点各向同性沥青，研究了溴化温度和溴引入量对所得产品性质参数的影响。GCMS与LDI TOF/MS测试结果表明，ET-HR主要由富含饱和脂肪侧链的3-6环芳香烃组成。ET-HR分别经30℃和200℃溴化后直接经350℃热处理发生脱溴化氢缩合反应。与简单热缩聚相比，该两步法显著提高了所得沥青的软化点（241~264℃）、产品得率（62 wt.%~67 wt.%）以及氮气下的残碳率（57 wt.%~77 wt.%）。对所得脱溴聚合沥青的组成和结构通过元素分析、 1H NMR、FT-IR和LDI-TOF/MS等技术手段进行了表征，结果表明脱溴聚合显著增强了前驱体的芳构化和缩聚反应程度。800℃炭化结果表明，溴化/脱溴聚合两步法所得各向同性沥青能够完全转变为各向异性织构，从而可广泛应用于高级炭材料领域。

关键词： high softening point and homogeneous isotropic pitches produced from distilled ethylene tar romination method

Effective Sodium Metabisulfite (Na2S2O5), HCl, Sulfur and distilled Water for the Removal of Pb, Zn and Cr Contaminated Soil in the Columns Method

在线全文

学校读者我要写书评

暂无评论

Agricultural Sciences 2019年第7期10卷 882-892页

作者： Abdulbaset Egrira Salama Department of Soil and Water Faculty of Agriculture Bani Waleed University Bani Waleed Libya

This paper presents an evaluation of different dose of Sodium Metabisulfite (0.01 M Na2S2O5), (Na2S2O5) + (0.1 HCl), and distilled water for the removal of soil contaminated with Pb, Zn and Cr by the column mode. The field soil contained concentrations of Pb (307.31 mg⋅kg−1), Zn (207.77 mg⋅kg−1) and Cr (447.50 mg⋅kg−1). Both (0.01 M Na2S2O5), (Na2S2O5) + (0.1 HCl), and distilled water were found to be effective on removing (Na2S2O5) Pb, Cr and Zn respectively. (Na2S2O5) + (0.1 HCl) Cr, Zn and Pb respectively. Sulfur Pb, Cr and Zn respectively. The removal rate of Pb, Zn, and Cr varied from 10.35% - 26%, 3.4% - 21.60% and 4.97% - 23.88% for (0.01 M Na2S2O5 respectively. The removal rate of Pb, Zn, and Cr varied from 16.13% - 20.07%, 8.20% - 23.48%, 5.42% - 28.93% for (0.01 M Na2S2O5 + 0.1 M HCl) respectively. The removal rate of Pb, Zn, and Cr varied from 10.20% - 25.5%, 9.55% - 25.13% and 6.04% - 25.54% for (S) respectively.

关键词： Sodium Metabisulfite (Na2S2O5) HCl Sulfur and distilled Water Pb Zn and Cr Soil Contaminated Sequential Washing

Studies on sulfinatodehalogenation *** sulfinatodehalogenation of primary perfluoroalkyl iodides and bromides by Rongalite

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 1990年第4期8卷 355-357页

作者： HUANG, Bing-Nan LIU,Jin-Tao Shanghai Institute of Organic Chemistry, Academia Sinica, Shanghai 200032 Shanghai Institute of Organic Chemistry Academia Sinica Shanghai 200032

Using acetonitrile or DMF as cosolvent, both perfluoroalkyl iodides such as Cl(CF_2)_nI (n=4,6,8, 1a-1c), CF_3(CF_2)n I(n=5,6,7, 1d-1f), I(CF_2)_n O (CF_2)SO_3 Na (n=2,4,6, 1g-1i)and perfl- uoroalkyl bromides such as Cl(CF_2) n Br (n=4,6, 3a-3b) and C_7F_(15) Br (3e) reacted with Rongalite in aqueous solution to give the corresponding sulfinates Cl(CF_2)n SO_2 Na (n=4,6,8, 2a-2c), CF_3- (CF_2)n SO_2Na (n=5,6,7, 2d-2f) and NaO_2S(CF_2)n O(CF_2)_2 SO_3Na (n=2,4,6, 2g-2i) in moderate yields. 1H-perfluoroalkanes were formed as the main products when other solvents such as ethanol. iso-propanol, 1,4-dioxane and morpholine were used.

关键词： acetonitrile ethanol dithio spectrometer distilled tablet crystallized Zeiss plications pellet

DETERMINATION OF ULTRA-TRACE RHODIUM BY CATALYTIC KINETIC SPECTROPHOTOMETRY

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 1992年第7期37卷 615-616页

作者：张志琪詹汉英 Department of Chemistry Shaanxi Normal University Xi'an 710062 PRC

Catalytic kinetic analysis is a sensitive method, but, previous studies only focused on de termination of osmium and ruthenium in the field of analysis of platinum family element. As to rhodium, high sensitive kinetic method is scarce. This letter reports a kinetic photometric method for determination of ultra-trace amounts of rhodium. It is based on the catalysis

关键词： catalysis platinum termination letter scarce rhodamine boiling distilled dilute reagent

THE EFFECT OF RADIX SALVIAE MILTIORRHIZAE COMPOSITA ON PEROXIDATION OF LOW DENSITY LIPOPROTEIN DUE TO COPPER DICHLORIDE

在线全文

学校读者我要写书评

暂无评论

Journal of Traditional Chinese Medicine 1994年第3期14卷 195-201页

作者：张小澍匡培根吴卫平尹学哲金(氵尺)武道小野寺庚午目时弘文大池弥三郎 The Department of Neurology 261 Hospital Beijing 100094 Department of Neurlogy Chinese PLA General Hospital Beijing 100853 Department of Internal Medicine Yan Bian Medical College Second Department of Internal Medicine Hirosaki University School of Medicine 036 Japan Department of Internal Medicine Reimeikyo Rehabilitation Hospital038-01Japan

It is well known that plasma lipoprotein, particularly oxidized LDL, plays an important rolein the pathogenesis of atherosclerosis and atherosclerotic diseases. We used oxidized LDLgenerated by incubating LDL from healthy Persons with copper dichloride as a model to in-vestigate the antioxidate property of Radix Salviae Miltiorrhizae Composita (RSMC). Onphotos, the spot X1 and the spot X2 were clearly found in the control group after the dislysisinto copper dichloride for 24 and 48 hours, but they could not found in the RSMC *** analysis of the constituents of lipids in LDL (by charring method) showed that afterdislysis the percentages of the spot X1 and the spot X2 in the RSMC group weresignificantly lower tban those in the control group (P< 0.01). The results suggest thatRSMC plays a potential role in antioxidation of lipuls or LDL.

关键词： lipids dialysis Radix oxidized macrophages pathogenesis endothelium clearly saline distilled

COMPOSITION AND PROPERTIES OF AGAR-TYPE POLYSACCHARIDES FROM GRACILARIA SJOESTEDTII KYLIN

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Oceanology and Limnology 1984年第1期2卷 88-91页

作者： J.S.Craigie Atlantic Research Laboratory NRCC 1411 Oxford Street Halifax Nova Scotia B3H 3Z1 Canada

A study was made on the composition and properties of agar-type polysaccharides of Gracilaria sjoestedtii from Qingdao, China. Fractional extraction was carried out and four fractions were obtained. The yields and chemical composition of these fractions were determined. Gel strength measurements of the agar-type polysaccharide fractions were made after alkli modification. The nature of the non-gelling, highly sulphated galactans (Fraction II) present in the thaw water after the initial extraction of Gracilaria in a freeze-thaw cycle was reported and discussed.

关键词： Gracilaria Qingdao cycle agarose dissolved embers neutral residue negligible distilled

Effects of Matricaria chamomilla extract on motor coordination impairment induced by scopolamine in rats

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Biomedicine 2015年第10期5卷 829-833页

作者： Samira Asgharzade Zahra Rabiei Mahmoud Rafieian-Kopaei Medical Plants Research Center Shahrekord University of Medical Sciences Department of Molecular Medicine Faculty of Advanced Medical TechnologiesTehran University of Medical Sciences

Objective: To evaluate the effect of ethanolic extract of chamomile on balance and motor learning in rats receiving scopolamine and intact ***: Fourty-two rats were divided into 6 groups(n = 7). Control group received distilled water. Rats in Group 2 were given 1 mg/kg scopolamine. Groups 3 and 4received chamomile extract 200 mg/kg and 500 mg/kg, respectively, and scopolamine simultaneously for 20 days. Intact groups(Groups 5 and 6) only received chamomile extract 200 mg/kg and 500 mg/kg, respectively. Motor coordination of rats was assessed with rotarod ***: According to the obtained results, compared with the control group, scopolamine significantly decreased time spent on rotarod performance(P < 0.001). Compared with scopolamine group, the strength and staying on rotarod apparatus in Group 3significantly increased(P < 0.05). The results of this research showed that intact groups that received only chamomile extract at doses of 200 mg/kg and 500 mg/kg significantly increased time spent on rotarod, compared with scopolamine group(P < 0.001).Conclusions: The results of this study indicated the high antioxidant property and protective effect of chamomile extract on motor coordination in the groups that received scopolamine.

关键词： impairment distilled protective apparatus assessed

DETECTION OF HUMAN TROPHOBLAST INTERFERON WITH ENZYME-LINKED IMMUNOSORBENT ASSAY

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Science Bulletin 1992年第20期37卷 1757-1759页

作者：陶亚雄曹咏清 Department of Endocrinology and Laboratory of Reproductive Biology Institute of Zoology Academia Sinica Beijing 100080 PRC

Although it is well known that luteal lifespan in early pregnancy is prolonged by human chorionic gonadotropin (hCG), recent evidence has suggested that proteins other than hCG, especially interferon-like substances r... 详细信息

关键词： gonadotropin chorionic maintenance interferon corpus prolonged elective rabbit distilled sheep

FURTHER OBSERVATIONS ON THE THERAPEUTIC EFFECT OF MAGNETS AND MAGNETIZED WATER AGAINST ASCARIASIS IN CHILDREN——ANALYSIS OF 114 CASES

在线全文

学校读者我要写书评

暂无评论

Journal of Traditional Chinese Medicine 1989年第2期9卷 111-112页

作者：伍杰 Kai Yuan District Hospital of Xiamen Fujian Province

Basing on the theory of collaterals,or JingLuo,the author further attempted to applymagneto-therapy in the treatment of ascariasis asa substitute for ascaricides to expel the parasitesby changing the living environmen... 详细信息

关键词： attempted stool substitute distilled magnet ascertain diarrhea intestine stasis tablets

RECENT ADVANCES IN STUDIES ON TRADITIONAL CHINESE ANTI-AGING MATERIA MEDICA

在线全文

学校读者我要写书评

暂无评论

Journal of Traditional Chinese Medicine 1993年第4期13卷 223-226页

作者：陈可冀李春生 Institute of Geriatrics Xiyuan HospitalChina Academy of Traditional Chinese MedicineBeijing100091

Presented in this paper is a report of our studies on 386 traditional effective anti-agingmedications,the effects of which on cell generation,survival time,immunomodulation,im-provement of visceral and metabolic functions,and anti-infection,and their trace elementcontents were further summarized and *** suggests that the investigations of tra-ditional anti-aging materia medica in China are now well under way and some effectivedrugs and compound prescriptions have been explored,such as Ginseng,Radix Astragali seuHedysari,Radix Angelicae Sinensis,Herba Epimedii,Cordyceps,Ganoderma Lucidum seuJaponicum,Radix Polygoni Multiflori,Radix Acanthopanacis Senticosi,RhizomaPolygonati,Fructus Lycii,and ***,all of these preliminary results remain to befurther investigated.

关键词： Radix Poria materia visceral Cordyceps preliminary summarized Ganoderma distilled stimulating