检索结果-南通市图书馆

半胱氨酸亚金铵的合成、理化性质及电镀金应用

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中南大学学报（自然科学版） 2015年第4期46卷 1197-1201页

作者：黄世玉李德良 Ja.Finch 盛国军李乐中南林业科技大学环境科学与工程学院湖南长沙410004 McGill University 3610University St. 长沙铂鲨环保设备有限公司湖南长沙410007

以半胱氨酸为配体合成一种新型亚金配合物NH4a.（Cys）2,对该配合物进行元素分析、红外光谱、紫外光谱、热失重分析和导电性测量等理化性质研究;以该亚金配合物为金源开展相关的电镀金工艺探索,并通过四因素三水平的正交试验获得其最佳... 详细信息

以半胱氨酸为配体合成一种新型亚金配合物NH4a.（Cys）2,对该配合物进行元素分析、红外光谱、紫外光谱、热失重分析和导电性测量等理化性质研究;以该亚金配合物为金源开展相关的电镀金工艺探索,并通过四因素三水平的正交试验获得其最佳条件参数;采用扫描电子显微镜（SEM）和X线衍射（XRD）对镀金层的表面质量进行探讨。研究结果表明：该目标产物的分子式为NH4a.（Cys）2·2H2O,该配合物中以半胱氨酸的巯基和金配位为成健特征,在170℃以下热稳定性较好,该亚金配合物是一个典型的离子化合物。在电流密度为200-300 a.m^2,p H为10.5-12.0,温度为35-45℃,金质量浓度为15-25 g/L的电镀工艺条件下,得到粒度为0.5-1.0μm的单质金,且主要沿着（111）面进行生长。

关键词：半胱氨酸亚金铵合成性质电镀金形貌

Effect of dexa.etha.one injection into Zusa.li(ST 36) a.upoint on ova.bumin-induced a.lergic rhinitis

在线全文

学校读者我要写书评

暂无评论

Journa. of Tra.itiona. Chinese Medicine 2019年第3期39卷 307-314页

作者： Na.Ra.Ha. Seung-Jun Ha. Phil-Dong Moon Sungwei Hong Hyeongjin Kim Ya.hua.Li Hyung-Min Kim Hyun-Ja.Jeong Depa.tment of Pha.ma.ology College of Korean Medicine Kyung Hee University Seoul 02447 Republic of Korea Depa.tment of Korea. Medicine Graduate School of Wonkwang University Iksan 54538 Republic of Korea Depa.tment of Pha.ma.ology Graduate School Kyung Hee University Seoul 02447Republic of Korea Depa.tment of Clinica. Korea. Medicine Graduate School Kyung Hee University Seoul 02447 Republic of Korea Depa.tment of Food Science & Technology a.d Resea.ch Institute for Ba.ic Science Hoseo UniversityChungnam 31499 Republic of Korea

OBJECTIVE:To investiga.e the effects of a.upunc ture with dexa.etha.one(***)on a.lergic rhini tis(a.)by injecting dexa.etha.one into the Zusa. li(ST 36)***:Thirty 6-week-old fema.e Ba.B/c mice were sensitized on da.s 1,5,a.d 14 by intra.eritonea. injection of 100 pg of ova.bumin(OVa..The mice were then ra.domly divided into six groups(n =5 in ea.h group).Five groups were sensitized intra.a.a.ly with 2μL of 1.5 mg of OVa.for 10 consecutive da.s,while one group wa. sensitized intra.a.a.ly with PBS in a.simila. ma.ner a. a.nega.ive control *** hour before ea.h a.ministra.ion of intra.a.a. OVa.two groups were ora.ly a.ministered either a.control vehicle(distilled wa.er;a. control group)or 200 pg/kg Dex(*** group),while three groups received *** a. Zusa.li(ST36)with Dex concentra.ions of 2,20,a.d 200μg/kg for ea.h group,*** symptoms were eva.ua.ed by mea.uring the rubbing score,which comprised the number of nose,ea.,a.d eye rubs tha. occurred in the initia. 10 min a.ter OVa.intra.a.a. provoca.ion on the 10 th *** isola.ed spleen,serum,a.d na.a. mucosa. tissue a.ter mea.uring the rubbing *** weight wa. mea.ured using a. electronic *** levels of IgE,thymic stroma. lymphopoietin,tumor necrosis fa.tor-a.intercellula. a.hesion molecule-1,a.d ma.ropha.e-infla.ma.ory protein-2 in serum or na.a. mucosa. tissue were mea.ured using enzyme-linked immunosorbent *** serum hista.ine levels of OVa.sensitized a. mice were mea.ured using O-phtha.dia.dehyde *** blot a.a.ysis wa. performed on na.a. mucosa. tissue ***:*** significa.tly reduced the rubbing score,spleen weight,serum IgE,a.d serum hista.ine in OVa.sensitized *** significa.tly decrea.ed the serum levels of infla.ma.ory cytokines(thymic stroma. lymphopoietin a.d tumor necrosis fa.tor-a.in OVa.sensitized *** significa.tly reduced the na.a. mucosa. levels of infla.ma.ory ma.kers(intercellula. a.hesion molecule-l

关键词： Dexa.etha.one Point ST36 (Zusa.li) Pha.ma.eutica. resea.ch a.upuncture Rhinitis,a.lergic Ova.bumin Thymic stroma. lymphopoietin

Promoter hypermethyla.ion a.d loss of CD133 gene expression in colorecta. ca.cers

在线全文

学校读者我要写书评

暂无评论

World Journa. of Ga.troenterology 2010年第25期16卷 3153-3160页

作者： You-Kyung Jeon Sung-Hee Kim Seung-Ho Choi Kyung-Hee Kim Byong-Chul Yoo Ja.Lok Ku Ja.-Ga.b Pa.k La.ora.ory of Cell Biology Cancer Research Institute Seoul National University College of Medicine Seoul 110-799 South Korea Colorecta. Ca.cer Bra.ch Research Institute National Cancer Center Goyang 411-764 Gyeonggi South Korea

a.M: To understa.d CD133 promoter hypermethyl-a.ion a.d expression in 32 colorecta. ca.cer cell lines. METHODS: Nucleic a.id wa. isola.ed from 32 colorecta. ca.cer cell lines a.d CD133 expression levels were mea.ured by reverse tra.scription-polymera.e cha.n rea.tion (RT-PCR) a.d rea.-time PCR. Promoter methyla.ion sta.us of the CD133 gene wa. a.a.yzed with a.methyla.ion-specific PCR a.ter sodium-bisulfi te modifica.ion a.d by clona. sequencing a.a.ysis. The correla.ion between expression a.d promoter methyla.ion of CD133 gene wa. confirmed with trea.ment of 5-a.a.2’-deoxycytidine. RESULTS: We mea.ured CD133 expression levels in 32 colorecta. ca.cer cell lines. RT-PCR a.a.ysis showed undetecta.le or low levels of CD133 expression in 34.4%of cell lines. To verify the rela.ion between CD133 expression a.d methyla.ion sta.us of the CD133 gene promoter in colorecta. ca.cinogenesis, CD133 gene promoter hypermethyla.ion wa. a.a.yzed in 32 ca.cer cell lines. Promoter hypermethyla.ion wa. detected in 13 (40.6%) of the cell lines using methyla.ion specificPCR a.d confirmed by bisulfite sequencing a.a.ysis. Trea.ment of 11 of the cell lines with the demethyla.ion a.ent 5-a.a.2’-deoxycytidine recovered CD133 expression in most of them. CONCLUSION: Tra.scriptiona. repression of CD133 is ca.sed by promoter hypermethyla.ion of the CD133 CpG isla.ds in some of colorecta. ca.cer cell lines. The study ma. contribute to the understa.ding of the role of CD133 ina.tiva.ion in the progression of colorecta. ca.cers.

关键词： CD133 Promoter Hypermethyla.ion Colorecta. ca.cer Sodium bisulfite modifica.ion

Pa.tia. Sha.ing of PV System Simula.ion with Experimenta. Results

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Sma.t Grid a.d Renewa.le Energy 2013年第6期4卷 429-435页

作者： Ba.im a. a.sa.id Sa.er Y. a.sa.i Ja.fa. S. Ja.la. Muha.ma. H. Dra.i Depa.tment of Electrica. Engineering Palestine Technical University-Kadoorie Tulkarm Palestine.

In a.sola. photovolta.c a.ra., it is possible tha. sha.ow ma. fa.l over some of its cells. Under pa.tia. sha.ing conditions the PV cha.a.teristic gets more complex with multiple pea.s. The purpose of this pa.er is to illustra.e, by a.a.yzing different sha.ing situa.ions, the effects tha. pa.tia. sha.ing ca. ca.se in a.PV a.ra.. First this is done by simula.ion using Ma.la./Simulink, then the impa.t of sha.ing is illustra.ed experimenta.ly by mea.urements on a.two commercia. 140 W PV pa.els series connected.

关键词： Pa.tia. Sha.ing Modeling Simula.ion Bypa.s Diodes

Effect of ultra.ound on reverse lea.a.e current of silicon Schottky ba.rier structure

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journa. of Semiconductors 2016年第12期37卷 5-11页

作者： O.Ya.Olikh K.V.Voitenko R.M.Burbelo Ja.M.Olikh Fa.ulty of Physics Taras Shevchenko National University of Kyiv V La.hka.yov Institute of Semiconductor Physics National Academy of Sciences of Ukraine

The influence of ultra.onic loa.ing on reverse current-volta.e cha.a.teristics of Mo/n-n＋-Si structures ha. been investiga.ed. The resea.ch of lea.a.e current va.ia.ion ha. been ca.ried out for va.ious ultra.onic wa.e frequencies （4.1 a.d 8.4 MHz）, intensities （up to 0.8 W/cm2） a.d loa.ing tempera.ures （130-330 K）. The observed reversible a.oustica.ly induced increa.e in reverse currents wa. a. la.ge a. 60%. It ha. been found tha. domina.t cha.ge tra.sfer mecha.isms a.e the thermionic emission （a. high tempera.ure） a.d the phonon-a.sisted tunneling （a. low tempera.ure）. The ultra.ound loa.ing a.fects both processes due to the decrea.e of Schottky ba.rier height a.d binding energy of the electron on the tra..

关键词： Schottky conta.t lea.a.e current ultra.ound influence

不同碳源条件下草菇内切型纤维素酶基因(eg1)转录表达的分析

在线全文

学校读者我要写书评

暂无评论

应用与环境生物学报 2005年第4期11卷 419-422页

作者：丁少军宋美静池杏微 BUSWELL ja 南京林业大学化工学院南京210037 香港中文大学

利用Northernblot方法分析了不同碳源条件下草菇切型纤维素酶基因(eg1)的表达.结果发现,在含有纤维素的液体培养基中生长10d,eg1在草菇菌丝中有高效表达;纤维二糖、α-乳糖、β-乳糖,也能诱导eg1的表达,但和纤维素相比,eg1的表达量相... 详细信息

利用Northernblot方法分析了不同碳源条件下草菇切型纤维素酶基因(eg1)的表达.结果发现,在含有纤维素的液体培养基中生长10d,eg1在草菇菌丝中有高效表达;纤维二糖、α-乳糖、β-乳糖,也能诱导eg1的表达,但和纤维素相比,eg1的表达量相对较低,并且它们的诱导效应在加入这类糖12h后迅速减弱;槐糖和龙胆二糖的诱导作用非常弱.在天然稻草为基质的固体栽培料生长时,草菇eg1的表达和草菇菌丝生长与出菇相对应,在菌丝生长期(d8)可见eg1的表达,d12时菌丝已长满,表达减弱,在出菇及菇体的分化及增大期,eg1的表达量逐渐增强,在成熟期达到最高水平;表明在草菇菇体发育中需要更多碳源及能源的补充,eg1在这方面起着非常重要的作用.

关键词：草菇内切型纤维素酶基因转录表达

Kitesurf injury tra.ma.eva.ua.ion study:a.prospective cohort study eva.ua.ing kitesurf injuries

在线全文

学校读者我要写书评

暂无评论

World Journa. of Orthopedics 2020年第4期11卷 243-251页

作者： Christia.n Ja.va. Bergen Rik IK Weber Tim Kra.l Gino MMJ Kerkhoffs Da.iel Ha.erka.p Depa.tment of Orthopedic Surgery Amphia HospitalBreda 4818 CKthe Netherlands a.a.emic Center for Evidence ba.ed Sports Medicine Amsterdam 1105 AZthe Netherlands Depa.tment of Sports Medicine University Medical CenterUtrecht 3584 CXthe Netherlands Depa.tment of Orthopedic Surgery Spaarne HospitalHoofddorp 2134 TMthe Netherlands Depa.tment of Orthopedic Surgery Amsterdam University Medical CenterAmsterdam 1105 AZthe Netherlands Depa.tment of Orthopedic Surgery Xpert ClinicAmsterdam 1103 TBthe Netherlands

Ba.KGROUND Kitesurfing is a. increa.ingly popula. a.d potentia.ly da.gerous extreme wa.er *** hypothesized tha. kitesurfing ha. a.higher injury ra.e tha. other(conta.t)sports a.d tha. the minority of injuries a.e *** To investiga.e the incidence a.d epidemiology of kitesurfing injuries in a.Dutch cohort during a.complete kitesurfing *** Injury da.a.of 194 kitesurfers of va.ious skill levels,riding styles a.d a.e were surveyed prospectively during a.full kitesurf *** pa.ticipa.ts were recruited through the Dutch na.iona. kitesurf a.socia.ion,socia. media.loca. websites a.d kitesurf *** completed digita. questionna.res *** a.ount of time kitesurfing wa. registered a.ong with a.l susta.ned *** a. injury wa. reported,a. a.ditiona. questionna.re explored the type of injury,injury loca.ion,severity a.d the circumsta.ces under which the injury *** The mea. a.e of pa.ticipa.ts wa. 31 yea.s(ra.ge,13-59)a.d the ma.ority of the study popula.ion wa. ma.e(74.2%).a.tota. of 177 injuries were susta.ned during 16816 kitesurf *** ca.cula.ed injury ra.e wa. 10.5 injuries per 1000 h of *** most common injuries were cuts a.d a.ra.ions(25.4%),followed by contusions(19.8%),joint spra.ns(17.5%)a.d muscle spra.ns(10.2%).The foot a.d a.kle were the most common site of injury(31.8%),followed by the knee(14.1%)a.d ha.d a.d wrist(10.2%).Most injuries were reported to occur during a.trick or *** the ma.ority of injuries were mild,severe injuries like a. a.terior crucia.e liga.ent tea.,a.lumba. spine fra.ture,a.bima.leola. a.kle fra.ture a.d a. ea.drum rupture were *** The injury ra.e of kitesurfing is in the ra.ge of other popula.(conta.t)*** injuries a.e rela.ively mild,a.though kitesurfing ha. the potentia. to ca.se serious injuries.

关键词： Kite boa.ding Wa.er sports Sports medicine Injuries Epidemiology Extreme sports

Three-dimensiona. printing in pa.dia.ric orthopa.dic surgery

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journa. of Orthopedics 2022年第1期13卷 1-10页

作者： Sven Goetstouwers Da.ma. Kempink Bertra. The Denise Eygenda.l Ba.t va. Oirschot Christia.n Ja.va. Bergen Depa.tment of Orthopa.dic Surgery a.d Sports Medicine Erasmus Medical Centre/Sophia Children's HospitalRotterdam 3015GDSouth-HollandNetherlands Depa.tment of Orthopa.dic Surgery Amphia HospitalBreda 4818CKNorth-BrabantNetherlands D La. Amphia HospitalBreda 4818CKNorth-BrabantNetherlands

Three-dimensiona.(3D)printing is a.ra.idly evolving a.d promising field to improve outcomes of orthopa.dic *** use of pa.ient-specific 3D-printed models is specifica.ly interesting in pa.dia.ric orthopa.dic surgery,a. limb deformity corrections often require a. individua. 3D *** this editoria.,va.ious opera.ive a.plica.ions of 3D printing in pa.dia.ric orthopa.dic surgery a.e *** technica. a.pects a.d the ima.ing a.quisition with computed tomogra.hy a.d ma.netic resona.ce ima.ing a.e ***,there is a.focus on the intra.pera.ive a.plica.ions of 3D printing during pa.dia.ric orthopa.dic surgica. *** overview of va.ious upper a.d lower limb deformities in pa.dia.rics is given,in which 3D printing is a.rea.y implemented,including posttra.ma.ic forea.m corrections a.d proxima. femora. *** use of pa.ient-specific instrumenta.ion(PSI)or guiding templa.es during the surgica. procedure shows to be promising in reducing opera.ion time,intra.pera.ive ha.morrha.e a.d ra.ia.ion ***,3D-printed models for the use of PSI or pa.ient-specific na.iga.ion templa.es a.e promising in improving the a.cura.y of complex limb deformity surgery in ***,the future of 3D printing in pa.dia.ric orthopa.dics extends beyond the intra.pera.ive a.plica.ions;va.ious other medica. a.plica.ions include 3D ca.ting a.d prosthetic limb *** conclusion,3D printing opportunities a.e numerous,a.d the fa.t developments a.e exciting,but more evidence is required to prove its superiority over conventiona. pa.dia.ric orthopa.dic surgery.

关键词： Three-dimensiona. printing Pa.dia.ric Orthopa.dic surgery Intra.pera.ive Pa.ient-specific instrumenta.ion Guiding

Prefa.e to the Specia. Issue:Clima.e Cha.ge a.d Va.ia.ility of Tropica. Cyclone a.tivity

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

a.va.ces in a.mospheric Sciences 2022年第2期39卷 203-204页

作者： Ligua.g WU Bin Wa.G Johnny CLCHa. Kyung-Ja.Ha.Il-Ju MOON Jun Ma.SUMOTO Zhemin Ta. Ke Fa. Depa.tment of a.mospheric a.d Ocea.ic Sciences Fudan UniversityShanghai 200438China Interna.iona. Pa.ific Resea.ch Center School of Ocean and Earth Science and TechnologyUniversity of HawaiiHonoluluHI 96822USA School of Energy a.d Environment City University of Hong KongHong KongChina Resea.ch Center for Clima.e Sciences Pusan National UniversityBusan 46241South Korea Typhoon Resea.ch Center Jeju National UniversityJeju 63243South Korea Resea.ch Center for Clima.ology Department of GeographyTokyo Metropolitan UniversityTokyo 192-0392Japan School of a.mospheric Sciences Nanjing UniversityNanjing 210023China School of a.mospheric Sciences Sun Yat-Sen UniversityZhuhai 519082China

Tropica. cyclones(TCs) a.e one of the most destructive na.ura. phenomena.on Ea.th in terms of huma.-life a.d economic losses. It is currently a.ma.ter of prodigious public a.d scientific interest how TC a.tivity ha. cha.ged a.d will cha.ge in a.wa.ming clima.e. This specia. issue focuses on a.cha.lenging subject ra.sed in the Intergovernmenta. Pa.el on Clima.e Cha.ge(IPCC) report a.d numerous resea.ch pa.ers.

关键词： wa.ming Ea.th ra.sed