检索结果-南通市图书馆

Enhancement of electron injection in inverted bottom-emitting organic light-emitting diodes using Al/LiF compound thin film

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

Optoelectronics Letters 2018年第3期14卷 189-194页

作者： NIE Qu-yang zhang fang-hui College of Electrical & Information Engineering Shaanxi University of Science and Technology Xi'an 710021China

The inverted bottom-emitting organic light-emitting devices(IBOLEDs)were prepared,with the structure of ITO/Al(x nm)/Li F(1 nm)/Bphen(40 nm)/CBP:GIr1(14%):R-4b(2%)(10 nm)/BCP(3 nm)/CBP:GIr1(14%):R-4b(2%)(20 nm)/TCTA(10 nm)/NPB(40 nm)/Mo O_3(40 nm)/Al(100 nm),where the thickness of electron injection layer Al(x)are 0 nm,2 nm,3 nm,4 nm and 5 nm,*** this paper,the electron injection condition and luminance properties of inverted devices were investigated by changing the thickness of Al layer in Al/Li F compound thin *** turns out that the introduction of Al layer can improve electron injection of the devices ***,the device exerts lower driving voltage and higher current efficiency when the thickness of electron injection Al layer is3 *** example,the current efficiency of the device with 3-nm-thick Al layer reaches 19.75 cd·A^(-1) when driving voltage is 7 V,which is 1.24,1.17 and 17.03 times larger than those of the devices with 2 nm,4 nm and 5 nm Al layer,*** device property reaches up to the level of corresponding conventional *** addition,all inverted devices with electron injection Al layer show superior stability of color coordinate due to the adoption of co-evaporation emitting layer and BCP spacer-layer,and the color coordinate of the inverted device with 3-nm-thick Al layer only changes from(0.580 6,0.405 6)to(0.532 8,0.436 3)when driving voltage increases from 6 V to 10 V.

关键词： Enhancement of electron injection compound thin film

Cognitive Status of Electrolytic Aluminum Workers:A Cross-sectional Study Using Cognitive Screening Tests

在线全文

学校读者我要写书评

暂无评论

Biomedical and Environmental Sciences 2019年第11期32卷 869-873页

作者： MENG Hua Xing WANG Shan Shan LU Xiao Ting zhang hui fang SHANG Nan zhang Shu hui NIU Qiao School of Public Health Shanxi Medical UniversityTaiyuan 030001ShanxiChina Department of neurology.First hospital of Shanxi Medical University Taiyuan 030001ShanxiChina

In 2014,a case of a worker diagnosed with Alzheimer’s disease(AD)following occupational exposure to aluminum(Al)was first reported by British scientist Christopher Exley[1].This patient had an early onset and a shorter course than the average person,indicating that Al may be an important environmental factor resulting in cognitive impairment.

关键词： shorter sectional worker

Salvianolic acid A attenuates vascular remodeling in a pulmonary arterial hypertension rat model

在线全文

学校读者我要写书评

暂无评论

中国药理学与毒理学杂志 2016年第10期30卷 1011-1012页

作者： CHEN Yu-cai YUAN Tian-yi zhang hui-fang fang Lian-hua DU Guan-hua Beijing Key Laboratory of Drug Targets Identification and Drug Screening Institute of Materia Medica Chinese Academy of Medical Sciences and Peking Union Medical College

OBJECTIVE The current therapeutic approaches have a limited effect on the dysregulated pulmonary vascular remodeling,which is characteristic of pulmonary arterial hypertension(PAH).In this study we exam-ined whether salvianolic acid A(SAA)extracted from the traditional Chinese medicine′Dan Shen′attenuated vascular remodeling in a PAH rat model,and elucidated the underlying *** PAH was induced in rats by injecting a single dose of monocrotaline(MCT 60 mg·kg-1,sc).The rats were orally treated with either SAA(0.3,1,3 mg·kg-1·d-1)or a positive control bosentan(30 mg·kg-1·d-1)for 4 *** and hemodynamic measurements were performed on d *** the hearts and lungs were harvested,the organ indices and pulmonary artery wall thickness were calculated,and biochemical and histochemical analysis were *** levels of apoptotic and signaling proteins in the lungs were measured using *** Treatment with SAA or bosentan effectively ameliorated MCTinduced pulmonary artery remodeling,pulmonary hemodynamic abnormalities and the subsequent increases of right ventricular systolic pressure(RVSP).Furthermore,the treatments significantly attenuated MCT-induced hypertrophic damage of myocardium,parenchymal injury and collagen deposition in the ***,the treatments attenuated MCT-induced apoptosis and fibrosis in the *** treatments partially restored MCT-induced reductions of bone morphogenetic protein typeⅡreceptor(BMPRⅡ)and phosphorylated Smad1/5 in the *** SAA ameliorates the pulmonary arterial remodeling in MCT-induced PAH rats most likely via activating the BMPRⅡ-Smad pathway and inhibiting ***,SAA may have therapeutic potential for the patients at high risk of PAH.

关键词： salvianolic acid A pulmonary artery hypertension apoptosis BMPR Ⅱ Smad vascular remolding

Synthesis,Structural Characterization of Ferrocenyl Iminophosphines and Amidophosphines as Well as Their Application in the Suzuki Reaction

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2007年第6期23卷 683-687页

作者： GONG Jun-fang zhang Yan-hui FAN Xin-heng WANG Da-wei SONG Mao-ping WU Yang-jie Department of Chemistry Henan Key Laboratory of Chemical Biology and Organic Chemistry Key Laboratory of Applied Chemistry of Henan Universities Zhengzhou University Zhengzhou 450052 P. R. China

Ferrocenyliminophosphine 1 and 1,1′-bisferrocenyliminophosphine 2 were easily prepared from the condensation of formylferrocene or 1,1′-diformylferrocene with 2-（diphenylphosphino） aniline. The following reduction of imine group by LiAlH4 led to the formation of the corresponding ferrocenyl amidophosphines 3 and 4. The new ligands 2- 4 were well characterized by IR, ^1H NMR, ^31p NMR spectra, elemental analysis, and ESI-MS. The catalytic activity of all the ligands with palladium compounds in the Suzuki reaction was evaluated. Ligand 1, in combination with Pd （OAc）2, was found to be the most effective for the Suzuki reaction of aryl bromides with phenylboronic acid. Typically, the use of 0. 1% （molar fraction） of Pd（OAc）2/ligand 1 in the presence of two equivalents of K2CO3 as base in toluene at 110 ℃ provided good to excellent yields of the coupled products.

关键词： Ferrocenyl Iminophosphine Amidophosphine Synthesis Suzuki reaction

Palmitoylation of AMPA Receptors is Involved in the Inhibition of Hippocampal Long-term Potentiation by Aluminum Exposure in Rats

在线全文

学校读者我要写书评

暂无评论

Biomedical and Environmental Sciences 2020年第12期33卷 959-963页

作者： SONG Jing XIA Xin Yu GAO Ting YUAN Chun Man LU Xiao Ting WANG Lin Ping zhang hui fang Department of Occupational Health School of Public HealthShanxi Medical UniversityTaiyuan 030001ShanxiChina

Aluminum(Al)is the most abundant metal in the Earth’s crust and is widely used in everyday life and *** is neurotoxic to *** studies have confirmed the positive relationship between an increased environmental Al conc... 详细信息

关键词： everyday fir abundant

The RAS/PI3K Pathway is Involved in the Impairment of Long-term Potentiation Induced by Acute Aluminum Treatment in Rats

在线全文

学校读者我要写书评

暂无评论

Biomedical and Environmental Sciences 2016年第11期29卷 782-789页

作者： SONG Jing LIU Ying zhang hui fang NIU Qiao Department of Occupational Health School of Public HealthShanxi Medical University

Objective To explore the role of RAS/PI3K pathway in the impairment of long-term potentiation （LTP） induced by acute aluminum （AI） treatment in rats in vivo. Methods First, different dosages of aluminum-maltolate complex [Al（mal）3] were given to rats via acute intracerebroventricular （i.c.v.） injection. Following AI exposure, the RAS activity of rat hippocampus were detected by ELISA assay after the hippocampal LTP recording by field potentiation technique in vivo. Second, the antagonism on the aluminum-induced suppression of hippocampal LTP was observed after the treatment of the RAS activator epidermal growth factor （EGF）. Finally, the antagonism on the downstream molecules （PKB activity and the phosphorylation of GluR1 $831 and $845） were tested by ELISA and West-blot assays at the same time. Results With the increasing aluminum dosage, a gradually decreasing in RAS activity of the rat hippocampus was produced after a gradually suppressing on LTP. The aluminum-induced early suppression of hippocampal LTP was antagonized by the RAS activator epidermal growth factor （EGF）. And the EGF treatment produced changes similar to those observed for LTP between the groups on PKB activity as well as the phosphorylation of GluR1 S831 and s845. Conclusion The RAS-PI3K/PKB-GluR1 S831 and S845 signal transduction pathway may be involved in the inhibition of hippocampal LTP by aluminum exposure in rats. However, the mechanisms underlying this observation need further investigation.

关键词： Aluminum Long-term potentiation RAS PKB AMPA receptor

Effects of Exposure to Aluminum on Long-term Potentiation and AMPA Receptor Subunits in Rats in vivo

在线全文

学校读者我要写书评

暂无评论

Biomedical and Environmental Sciences 2014年第2期27卷 77-84页

作者： SONG Jing LIU Ying zhang hui fang zhang Qin Li NIU Qiao Department of Occupational Health School of Public Health Shanxi Medical University

Objective To explore the effects of exposure to aluminum （AI） on long-term potentiation （LTP） and AMPA receptor subunits in rats in vivo. Methods Different dosages of aluminum-maltolate complex [Al（mal）3] were given to rats via acute intracerebroventricular （i.c.v.） injection and subchronic intraperitoneal （i.p.） injection. Following AI exposure, the hippocampal LTP were recorded by field potentiation technique in vivo and the expression of AMPAR subunit proteins （GluR1 and GluR2） in both total and membrane-enriched extracts from the CA1 area of rat hippocampus were detected by Western blot assay. Results Acute AI treatment produced dose-dependent suppression of LTP in the rat hippocampus and dose-dependent decreases of GluRz and GluR2 in membrane extracts; however, no similar changes were found in the total cell extracts, which suggests decreased trafficking of AMPA receptor subunits from intracellular pools to synaptic sites in the hippocampus. The dose-dependent suppressive effects on LTP and the expression of AMPA receptor subunits both in the membrane and in total extracts were found after subchronic AI treatment, indicating a decrease in AMPA receptor subunit trafficking from intracellular pools to synaptic sites and an additional reduction in the expression of the subunits. Conclusion Al（mal）3 obviously and dose-dependently suppressed LTP in the rat hippocampal CA1 region in vivo, and this suppression may be related to both trafficking and decreases in the expression of AMPA receptor subunit proteins. However, the mechanisms underlying these observations need further investigation.

关键词： Aluminum-maltolate complex Long-term potentiation AMPA receptor Hippocampus invivo

在线全文

学校读者我要写书评

暂无评论

双空穴注入的绿色磷光有机电致发光器件

发光学报 2012年第10期33卷 1107-1111页

作者：张静张方辉陕西科技大学电气与信息工程学院陕西西安710021

制作了一种新型绿色磷光有机电致发光二极管。器件结构为ITO/HAT-CN(x nm)/MoO3(30 nm)/NPB(40 nm)/TCTA(10 nm)/CPB∶GIr1(30 nm,14%)/BCP(10 nm)/Alq3(25 nm)/LiF(1 nm)/Al(100 nm),其中X=0,8,10,12,14,15 nm。电流密度-电压-亮度特性表明该结构有利于降低驱动电压和增加器件亮度。当HAT-CN厚度为12 nm时,器件的最高亮度可以达到32 480 cd/m2,起亮电压为3.5 V左右,发光效率为24.2cd/A。所设计的空穴型器件证明该器件结构具有很好的空穴注入和传输特性。

关键词： OLED 双空穴注入层绿色磷光

Asymmetry of Photodetachment of F− by Few-Cycle Infrared Laser Fields: Laser-Intensity Effects

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2011年第6期28卷 94-97页

作者： BAI Li-Hua HOU Lu-Qiang CUI Ting-Ting LIU Yu-Heng WANG Yan zhang hui-fang DENG Dong-Mei Department of Physics Shanghai UniversityShanghai 200444

Asymmetry of the photodetachment of F−by few-cycle circularly polarized infrared laser fields is studied by using a nonperturbative quantum scattering *** asymmetry of photoelectrons emitted to a pair of two opposite directions for low laser peak intensities is found and the dependence of the asymmetry on the laser peak intensity is *** is found that the asymmetry degree varies with the carrier-envelope(CE)phase as a sine-like *** asymmetry degree,the value of the maximal asymmetry degree and the value of the CE phase corresponding to the maximal asymmetry degree vary with the laser peak intensity *** higher laser intensities,the asymmetry is still distinctive for relatively-long few-cycle *** provides a possible means to measure the CE phase of laser pulses at lower intensities.

关键词： scattering Infrared Intensity