期刊文献+
共找到99篇文章
< 1 2 5 >
每页显示 20 50 100
微波法制备钙钛矿结构的锂离子导体La0.56Li0.33TiO3(英文)
1
作者 吕晓娟 王蕊 +2 位作者 刘文宇 陆威旭 刘维捷 《硅酸盐学报》 EI CAS CSCD 北大核心 2019年第6期725-729,共5页
采用微波法制备了钙钛矿结构的锂离子导体材料La0.56Li0.33TiO3。将微波炉热处理过的粉末与管式炉热处理的粉末以不同比例混合,制备了La0.56Li0.33TiO3圆片。经过微波炉1 000℃热处理之后,所有的样品均结晶生成了四方相。与在管式炉中1 ... 采用微波法制备了钙钛矿结构的锂离子导体材料La0.56Li0.33TiO3。将微波炉热处理过的粉末与管式炉热处理的粉末以不同比例混合,制备了La0.56Li0.33TiO3圆片。经过微波炉1 000℃热处理之后,所有的样品均结晶生成了四方相。与在管式炉中1 200℃烧结的样品相比,微波炉烧结得到的样品的总电导率和晶界电导率都更高。总电导率和晶界电导率的提高归因于微波烧结所产生的更适合的锂离子迁移通道以及更大的晶胞尺寸。所有样品的锂离子迁移数都接近于1,意味着所制备的样品均为离子导体。因此,微波烧结可用于在较低的温度制备锂电解质,克服了传统高温烧结的锂损失问题。 展开更多
关键词 微波 钙钛矿 锂离子导体 晶界
浅析棉锦四面弹机织物的印染加工 预览
2
作者 袁建强 杨文禹 +2 位作者 张刚 卢国栋 张泼 《染整技术》 CAS 2019年第8期14-16,42,共4页
棉锦交织四面弹前处理采用轻烧毛、碱氧冷堆、丝光。高温定型前先通过预缩处理控制好经向缩水率(确保纬密),确保经向弹性在要求范围;再通过生物酶抛光处理,使面料更光洁。酸性染料溢流染锦,棉组分活性染料采用长车平幅连续轧染等。
关键词 棉锦交织 四面弹 高温定型 酸性染料 生物抛光酶 预缩
在线阅读 下载PDF
Characterization and analysis of petrochemical wastewater through particle size distribution, biodegradability, and chemical composition
3
作者 Xiaoqiang Jia Dayao Jin +1 位作者 Chen Li Wenyu Lu 《中国化学工程学报:英文版》 SCIE EI CAS CSCD 2019年第2期444-451,共8页
The centralized treatment method is a widely used form of wastewater treatment that tends to be less effective at removing toxic substances. Therefore, a detailed analysis of the composition of wastewater can provide ... The centralized treatment method is a widely used form of wastewater treatment that tends to be less effective at removing toxic substances. Therefore, a detailed analysis of the composition of wastewater can provide important information for the design of an effective wastewater treatment process. The objective of this paper was to investigate particle size distribution(PSD), biodegradability, and the chemical composition of the petrochemical wastewater discharges. For this purpose, this project selected the petrochemical wastewater and treated wastewater of China National Offshore Oil Corporation Zhongjie Petrochemical Co, Ltd. as the analysis objects.The step-by-step filtration method, along with a molecular weight classification method, was selected to build the chemical oxygen demand(COD) and biochemical oxygen demand(BOD) fingerprints of petrochemical wastewater and treated wastewater. The results showed that the main pollutants were settleable particles in petrochemical wastewater, which contributed to over 54.85% of the total COD. The colloidal particles with particle sizes in the range of 450–1000 nm had the highest COD value in the treated wastewater, which contributed34.17% of the total COD of treated wastewater. The results of the BOD analysis showed that the soluble fractions were the main reason that treated wastewaters did not meet the treatment standards. Tests on the organic compounds in petrochemical wastewater found that there were mainly linear paraffins, branched paraffins, benzene series compounds, and some plasticizers in the influent of the petrochemical wastewater. The most abundant pollutants in treated petrochemical wastewater were the adjacent diisobutyl phthalate and the linear alkanes.Fourier transform infrared(FTIR) transmission spectroscopy analysis showed that the settleable particles of petrochemical wastewater and membrane bioreactor(MBR)-treated wastewater contained multiple types of organic substances. The results also indicated that removing the oil-settleable substances, t 展开更多
关键词 PETROCHEMICAL wastewater GRADIENT membrane separation Chemical OXYGEN DEMAND BIOCHEMICAL OXYGEN DEMAND
Research of 1,3-Dihydroxyacetone Production by Overexpressing Glycerol Transporter and Glycerol Dehydrogenase 预览
4
作者 Jinxiu Tan Xiaona Yang Wenyu Lu 《天津大学学报:英文版》 EI CAS 2019年第5期549-558,共10页
1,3-Dihydroxyacetone (DHA), a natural ketose, is widely used in the chemical, cosmetic, and pharmaceutical industries. The current method for DHA production is Gluconobacter oxydans ( G. oxydans ) fermentation, but th... 1,3-Dihydroxyacetone (DHA), a natural ketose, is widely used in the chemical, cosmetic, and pharmaceutical industries. The current method for DHA production is Gluconobacter oxydans ( G. oxydans ) fermentation, but the high concentration of glycerol in the fermentation broth inhibits cells growth. To overcome this obstacle, in this study, we overexpressed the glycerol transporter (GlpFp) by the use of promoters P tufB , P gmr , P glp1 , and P glp2 in G. oxydans 621H. The results show that the glycerol tolerances of strains overexpressing G lpF were all much better than that of the control strain. The glycerol dehydrogenase gene (G dh) was overexpressed by the promoters P tufB and P gdh , which increased the DHA titer by 12.7% compared with that of the control group. When G lpF and Gdh genes were co-overexpressed in G. oxydans 621H, the OD600 value of the engineered strains all increased, but the DHA titers decreased in di erent degrees, as compared with strains that overexpressed only G dh . This study provides a reference for future research on DHA production. 展开更多
关键词 G. oxydans 621H 1 3-dihydroxyacetone GLYCEROL GLYCEROL TRANSPORTER GLYCEROL DEHYDROGENASE
在线阅读 下载PDF
Isolation of Secondary Metabolites with Antimicrobial Activities from Bacillus amyloliquefaciens LWYZ003 预览
5
作者 Zhen Liu Yiting Wang +1 位作者 Xiaoqiang Jia Wenyu Lu 《天津大学学报:英文版》 EI CAS 2019年第1期38-44,共7页
The strain LWYZ003, which can restrain multiple pathogens, was screened from the sediment of the ocean and identifi ed as Bacillus amyloliquefaciens . Large-scale fermentation and modern chromatographic separation tec... The strain LWYZ003, which can restrain multiple pathogens, was screened from the sediment of the ocean and identifi ed as Bacillus amyloliquefaciens . Large-scale fermentation and modern chromatographic separation technologies (macroporous resin column chromatography, silica gel column chromatography, thin-layer chromatography and high-performance liquid chromatography) were used to separate antimicrobial products from the fermentation broth of marine-derived Bacillus amyloliquefaciens LWYZ003. Bioactive-guided separation was used in the term of seeking antimicrobial products from the secondary metabolites of Bacillus amyloliquefaciens LWYZ003. As a result, two natural products cycloheximide ( 1 ) and trehalose ( 2 ) were obtained. Their structures were elucidated by Fourier transform infrared spectroscopy, high-resolution mass spectrometry, 1 H and 13 C nuclear magnetic resonance analysis. In the cylinder plate method, compound 1 exhibited stronger antimicrobial activities than compound 2 against Micrococcus luteus , and also exhibited wider antimicrobial spectrum than compound 2 . In conclusion, isolation of bioactive secondary metabolites from marine Bacillus sp. has enormous potentials in finding suitable antibiotics to inhibit multiple pathogens. 展开更多
关键词 CYCLOHEXIMIDE TREHALOSE BACILLUS amyloliquefaciens Bioactivity-guided ISOLATION Antibiotic
在线阅读 下载PDF
n-Hexadecane and pyrene biodegradation and metabolization by Rhodococcus sp. T1 isolated from oil contaminated soil
6
作者 Xiaoqiang Jia Yun He +2 位作者 Lei Huang Dawei Jiang Wenyu Lu 《中国化学工程学报:英文版》 SCIE EI CAS CSCD 2019年第2期411-417,共7页
The high-molecular weight polycyclic aromatic hydrocarbons(PAHs) pyrene and typical long chain alkane nhexadecane are both difficult to degrade. In this study, n-hexadecane and pyrene degrading strain Rhodococcus sp. ... The high-molecular weight polycyclic aromatic hydrocarbons(PAHs) pyrene and typical long chain alkane nhexadecane are both difficult to degrade. In this study, n-hexadecane and pyrene degrading strain Rhodococcus sp. T1 was isolated from oil contaminated soil. Strain T1 could remove 90.81% n-hexadecane(2 vol%) and 42.79% pyrene(200 mg·L-1) as a single carbon within 5 days, respectively. Comparatively, the degradation of pyrene increased to 60.63%, but the degradation of n-hexadecane decreased to 87.55% when these compounds were mixed. Additionally, identification and analysis of degradation metabolites of Rhodococcus sp. T1 in the above experiments showed that there were significant changes in alanine, methylamine, citric acid and heptadecanoic acid between sole and dual substrate degradation. The optimal conditions for degradation were then determined based on analysis of the pH, salinity, additional nutrient sources and liquid surface activity.Under the optimal conditions of pH 7.0, 35℃, 0.5% NaCl, 5 mg·L^-1 of yeast extract and 90 mg·L^-1 of surfactant,the degradation increased in single or dual carbon sources. To our knowledge, this is the first study to discuss metabolite changes in Rhodococcus sp. T1 using sole substrate and dual substrate to enhance the long-chain alkanes and PAHs degradation potential. 展开更多
关键词 BIODEGRADATION Metabolite N-HEXADECANE PYRENE RHODOCOCCUS sp. T1
基于FEM和正交试验的茶园修剪机刀片的优化 预览
7
作者 易文裕 王攀 +2 位作者 庹洪章 卢营蓬 余满江 《农机化研究》 北大核心 2020年第1期8-13,共6页
修剪是茶树等经济类树木种植综合管理中的重要环节,切口质量的好坏对其产量和质量具有直接的影响。为降低修剪过程中刀片的剪切阻力、提高切口质量,采用FEM数值方法和APN1211E-U功率分析仪进行了茶树枝修剪的仿真与试验,仿真峰值功耗与... 修剪是茶树等经济类树木种植综合管理中的重要环节,切口质量的好坏对其产量和质量具有直接的影响。为降低修剪过程中刀片的剪切阻力、提高切口质量,采用FEM数值方法和APN1211E-U功率分析仪进行了茶树枝修剪的仿真与试验,仿真峰值功耗与试验峰值功耗误差为5.7%,验证了茶树枝修剪仿真模型的准确性。运用该仿真模型对刀片间隙γ、切割速度υ进行了虚拟正交试验,并建立了该参数与峰值阻力的数学模型,得出在刀片间隙γ为0.01mm、剪切速度υ为1.414 7m/s、修剪直径为3.5mm时,茶树枝峰值阻力最小为5.160 7N,为茶园修剪机刀具的设计和优化提供了方法和思路。 展开更多
关键词 刀片 有限单元法 正交试验 剪切 优化 茶园修剪机
在线阅读 下载PDF
我院2014~2016年辅助用药注射剂使用分析 预览
8
作者 王建 张桂芬 +2 位作者 支文煜 卢虹 朱爱国 《中国医药导报》 CAS 2018年第2期127-131,共5页
目的了解常熟市第一人民医院(以下简称"我院")辅助用药应用现状和趋势,为临床合理用药提供参考。方法依据江苏省苏州市及南京市卫计委辅助用药重点监控目录,从我院HIS中调取2014-2016年辅助用药注射剂相关数据,按照WHO推荐的限定日... 目的了解常熟市第一人民医院(以下简称"我院")辅助用药应用现状和趋势,为临床合理用药提供参考。方法依据江苏省苏州市及南京市卫计委辅助用药重点监控目录,从我院HIS中调取2014-2016年辅助用药注射剂相关数据,按照WHO推荐的限定日剂量法,对辅助用药注射剂的销售金额、年增长率、用药频度、排序比和限定日费用等进行统计分析。结果 3年期间,我院辅助用药注射剂的销售金额分别为7084.82、6350.41、4987.39万元,2015、2016年各比上年下降10.37%和21.46%,占医院药品销售总金额的比例为19.64%、16.52%和12.94%。销售金额和DDDs排序第1、2位类别是神经系统用药和免疫调节药。单品种销售金额排序列前3位的有神经节苷脂、鼠神经生长因子和依达拉奉等;单品种用药频度排序列前3位的是香菇多糖、脂溶性维生素(Ⅱ)和前列地尔。结论我院辅助用药注射剂使用大幅下降,管控成效显著。但仍需对性价比较差的辅助用药进行重点跟踪,进一步促进其合理使用。 展开更多
关键词 辅助用药注射剂 销售金额 用药频度 限定日费用 年增长率 合理用药
在线阅读 下载PDF
Fed-Batch Fermentation for Spinosad Production in an Improved Reactor 预览
9
作者 Chunzhe Lu Jing Yin +1 位作者 Chuanbo Zhang Wenyu Lu 《天津大学学报:英文版》 EI CAS 2017年第6期530-537,共8页
As a kind of aerobic bacteria, Saccharopolyspora spinosa exhibits a high demand for oxygen. In the fermentation process, the methods of increasing ventilation and improving agitation speed are usually adopted to achie... As a kind of aerobic bacteria, Saccharopolyspora spinosa exhibits a high demand for oxygen. In the fermentation process, the methods of increasing ventilation and improving agitation speed are usually adopted to achieve higher values of dissolved oxygen. These methods decrease the efficiency of spinosad biosynthesis.In this study, an improved reactor was designed to solve these problems. The exhaust gas reflux device, impellers,and baffles were improved. Furthermore, we established the kinetic models for the cell growth, substrate consumption and spinosad generation in batch fermentation process. The simulation results were in good agreement with the experimental data. Spinosad production reached 583.86 mg/L after employing the suitable feeding strategy by fed-batch fermentation in the improved reactor, whereas it was only 157.01 mg/L before optimization. The method described can provide insight to strengthen spinosad production and can be extended to the culturing process of filamentous aerobic bacteria. 展开更多
关键词 SPINOSAD Bioreactors FED-BATCH FERMENTATION SACCHAROPOLYSPORA spinosa
在线阅读 下载PDF
The Pathogenesis of the Mechanism of FGF23 in Chronic Kidney Disease Patients with Vascular Calcification 预览
10
作者 Shanshan LI Wenyu GNOG +19 位作者 Sibo HUANG Lianghong YIN Bo HU Xiangnan DONG Taksui WONG Fanna LIU Yingyan LI Yueling ZHU Xin CHEN Baozhang GUAN Shengling HUANG Shuang CUI Bing YAN Hongwei HU Shaofeng HUANG Yongpin LU Shufei ZENG Chen YUN Berthold Hocher Wolfgang Pomme 《临床医学工程》 2017年第S1期49-51,共3页
Fibroblast growth factor 23(FGF23)is a protein synthesized by bone cell and the osteoblast with endocrine function.The main role of FGF23 is to regulate serum phosphorus and 1,25(OH)2 D3 levels,it also plays an import... Fibroblast growth factor 23(FGF23)is a protein synthesized by bone cell and the osteoblast with endocrine function.The main role of FGF23 is to regulate serum phosphorus and 1,25(OH)2 D3 levels,it also plays an important role in calcium and phosphorus metabolism.The role of FGF23 in renal disease is to inhibit of phosphorus reabsorption,promote urinary phosphorus excretion and maintain a stable blood phosphorus level.Patients with chronic kidney disease(CKD)have more risk to suffer cardiovascular disease(CVD)which is related to the abnormal metabolism of calcium and phosphorus.FGF23,as newly discovered cardiovascular risk marker,several studies have shown that FGF23 level associates with multiple cardiovascular risk factors in CKD patients,especially in CKD patients with vascular calcification.To explore its pathogenesis of vascular calcification in CKD patients is particularly important,and that may help to take appropriate measures to improve the prognosis of CKD patients. 展开更多
在线阅读 下载PDF
Computational fluid dynamics simulation of a novel bioreactor forsophorolipid production
11
作者 Xiaoqiang Jia Lin Qi +4 位作者 Yaguang Zhang Xue Yang Hongna Wang Fanglong Zhao Wenyu Lu 《中国化学工程学报:英文版》 SCIE EI CAS CSCD 2017年第6期732-740,共9页
This paper describes three-dimensional computational fluid dynamics (CFD) simulations of gas-liquid flow in anovel laboratory-scale bioreactor contained dual ventilation-pipe and double sieve-plate bioreactor (DVDS... This paper describes three-dimensional computational fluid dynamics (CFD) simulations of gas-liquid flow in anovel laboratory-scale bioreactor contained dual ventilation-pipe and double sieve-plate bioreactor (DVDSB)used for sophorolipid (SL) production. To evaluate the role of hydrodynamics in reactor design, the comparisonsbetween conventional fed-batch fermenter and DVDSB on the hydrodynamic behavior are predicted by the CFDmethods. Important hydrodynamic parameters of the gas-liquid two-phase system such as the liquid phasevelocity field, turbulent kinetic energy and volume-averaged overall and time-averaged local gas holdups weresimulated and analyzed in detail. The numerical results were also validated by experimental measurements ofoverall gas holdups. The yield of sophorolipids was significantly improved to 484 g. L^-1 with a 320 h fermenta-tion period in the new reactor. 展开更多
关键词 Bioreactors Gas HOLD-UP COMPUTATIONAL FLUID dynamics (CFD)Hydrodynamics Sophorolipid production
苦荞麦产量相关因素分析 预览
12
作者 王欣欣 卜一 +4 位作者 李炳海 李文玉 路耿新 雷雨田 唐超 《北方农业学报》 2017年第1期10-13,41共5页
为了探讨新品种选育过程中各种性状对苦荞麦产量的影响,将来自全国的102份苦荞品种(系)资源引种至赤峰栽培,根据产量情况筛选其中的10个高产品种,运用灰色系统理论的关联度分析法对其众多性状加以综合评估,结果表明:苦荞产量与各性状的... 为了探讨新品种选育过程中各种性状对苦荞麦产量的影响,将来自全国的102份苦荞品种(系)资源引种至赤峰栽培,根据产量情况筛选其中的10个高产品种,运用灰色系统理论的关联度分析法对其众多性状加以综合评估,结果表明:苦荞产量与各性状的灰色关联度大小依次为:株高>单花序结籽数>单株粒重>主茎节数>叶片数>茎粗>主茎分枝>千粒重>生育期。关联度越大,说明该性状对产量贡献越大;反之则越小。 展开更多
关键词 苦荞 农艺性状 产量 相关因素 灰色关联度分析
在线阅读 免费下载
关节镜下膝关节清理联合腓骨截骨术治疗膝关节骨性关节炎的临床疗效分析 预览 被引量:8
13
作者 韦东磊 冯文宇 +3 位作者 陆梅凡 邹林 韦苏怡 姚军 《广西医科大学学报》 CAS 2017年第10期1456-1459,共4页
目的:探讨关节镜下膝关节清理联合腓骨截骨术治疗膝关节骨性关节炎(KOA)的临床疗效。方法:回顾性分析49例KOA患者的临床资料,分别采用关节镜下膝关节清理术(单纯治疗组,23例)和关节镜下膝关节清理联合腓骨截骨治疗(联合治疗组... 目的:探讨关节镜下膝关节清理联合腓骨截骨术治疗膝关节骨性关节炎(KOA)的临床疗效。方法:回顾性分析49例KOA患者的临床资料,分别采用关节镜下膝关节清理术(单纯治疗组,23例)和关节镜下膝关节清理联合腓骨截骨治疗(联合治疗组,26例),比较两组患者手术前、后疼痛视觉模拟评分(VAS)、Lysholm及美国特种外科医院膝关节评分(HSS)变化,膝关节液内白细胞介素-6(IL-6)、肿瘤坏死因子-α(TNF.Gc)水平改善情况及手术并发症发生情况。结果:与术前比较,两组患者术后VAS评分及关节液内IL-6、TNF-α水平明显降低,Lysholm及HSS评分明显增高,差异均有统计学意义(均P〈0.05);且联合治疗组术后VAS评分及关节液内IL-6、TNF-α指标水平低于单纯治疗组,Lysholm及HSS评分高于单纯治疗组,差异有统计学意义(P〈0.05)。单纯治疗组中未出现相关并发症,联合治疗组有1例(1膝,3.2%)出现神经损伤,1例(1膝,3.2%)出现局部创口感染。结论:关节镜下膝关节清理联合腓骨截骨是一种安全、有效的治疗KOA的手术方式,短期内可有效缓解患者膝关节疼痛症状、减轻局部炎症及促进患肢功能康复。 展开更多
关键词 膝关节骨性关节炎 腓骨截骨 膝关节清理 关节镜
在线阅读 免费下载
Molecular Simulation and Catalytic Active Sites Identification of Dammarenediol-Ⅱ Synthase 预览
14
作者 Ting Liu Xiangmei Zhang +1 位作者 Fanglong Zhao Wenyu Lu 《北京理工大学学报:英文版》 EI CAS 2017年第4期563-570,共8页
在线阅读 免费下载
A physical model of hole mobility for germanium-on-insulator pMOSFETs
15
作者 袁文宇 徐静平 +2 位作者 刘璐 黄勇 程智翔 《半导体学报:英文版》 EI CAS CSCD 2016年第4期50-56,共7页
A physical model of hole mobility for germanium-on-insulator p MOSFETs is built by analyzing all kinds of scattering mechanisms, and a good agreement of the simulated results with the experimental data is achieved, co... A physical model of hole mobility for germanium-on-insulator p MOSFETs is built by analyzing all kinds of scattering mechanisms, and a good agreement of the simulated results with the experimental data is achieved, confirming the validity of this model. The scattering mechanisms involved in this model include acoustic phonon scattering, ionized impurity scattering, surface roughness scattering, coulomb scattering and the scattering caused by Ge film thickness fluctuation. The simulated results show that the coulomb scattering from the interface charges is responsible for the hole mobility degradation in the low-field regime and the surface roughness scattering limits the hole mobility in the high-field regime. In addition, the effects of some factors, e.g. temperature, doping concentration of the channel and the thickness of Ge film, on degradation of the mobility are also discussed using the model, thus obtaining a reasonable range of the relevant parameters. 展开更多
关键词 空穴迁移率 物理模型 绝缘体 场效电晶体 散射机制 表面粗糙度 MOSFET
改进财务评价指标体系的筛选研究 预览 被引量:2
16
作者 张文宇 陶蓉 +1 位作者 陈星 任露 《计算机工程与应用》 CSCD 北大核心 2016年第23期102-108,共7页
为解决目前传统项目财务评价指标存在的意义重复、通用性欠佳等不足,提出了指标改进与技术筛选相结合的体系模型。首先根据传统指标的不足,提出新的改进财务评价指标,形成更加完善的指标体系;进而运用因子分析与聚类分析相结合的数... 为解决目前传统项目财务评价指标存在的意义重复、通用性欠佳等不足,提出了指标改进与技术筛选相结合的体系模型。首先根据传统指标的不足,提出新的改进财务评价指标,形成更加完善的指标体系;进而运用因子分析与聚类分析相结合的数据挖掘方法对改进的投资项目财务评价指标体系进行筛选,提高了财务评价的准确性及计算效率;最后应用实例验证了数据挖掘技术在投资项目财务评价指标研究中的有效性,为项目财务评价工作者提供一种改进的思路与方法。 展开更多
关键词 投资项目 财务评价指标 因子分析 聚类分析
在线阅读 下载PDF
Improved interfacial and electrical properties of Ge MOS devices with ZrON/GeON dual passivation layer*
17
作者 袁文宇 徐静平 +2 位作者 刘璐 黄勇 程智翔 《半导体学报:英文版》 EI CAS CSCD 2016年第5期43-47,共5页
The interfacial and electrical characteristics of Ge metal–oxide–semiconductor(MOS) devices with a dual passivation layer of ZrON/GeON formed by NH3- or N2-plasma treatment are investigated. The experimental resul... The interfacial and electrical characteristics of Ge metal–oxide–semiconductor(MOS) devices with a dual passivation layer of ZrON/GeON formed by NH3- or N2-plasma treatment are investigated. The experimental results show that the NH3-plasma treated sample exhibits significantly improved interfacial and electrical properties as compared to the samples with N2-plasma treatment and no treatment: a lower interface-state density at the midgap(1.64×1011cm-2·e V-1/ and gate leakage current(9.32×10-5A/cm2 at Vfb +1 V), a small capacitance equivalent thickness(1.11 nm) and a high k value(32). X-ray photoelectron spectroscopy is used to analyze the involved mechanisms. It is indicated that more GeON and less GeOx(x < 2) are formed on the Ge surface during NH3-plasma treatment than the N2-plasma treatment, resulting in a high-quality high-k/Ge interface, because H atoms and NH radicals in NH3-plasma can enhance volatilization of the unstable low-k GeOx, creating high-quality GeON passivation layer. Moreover, more nitrogen incorporation in ZrON/GeON induced by NH3-plasma treatment can build a stronger N barrier and thus more effectively inhibit in-diffusion of O and Ti from high-k gate dielectric and out-diffusion of Ge. 展开更多
关键词 半导体界面 MOS器件 聚氯乙烯 钝化层 电气性能 等离子体处理 电子能谱分析 电气特性
三维打印技术在食品加工领域中的应用 预览 被引量:1
18
作者 周纹羽 李哲 +5 位作者 路飞 王桥 陈文庆 陈革 庞文禄 单秀峰 《农业科技与装备》 2016年第12期63-66,共4页
综述三维打印技术的原理,从巧克力糖果制品、烘焙食品、重组性食品等方面对三维打印技术在食品加工领域的重要发展的方向进行介绍,分析该技术在食品加工领域中的应用、发展及面临的挑战,以期为三维打印技术的进一步发展提供参考。
关键词 三维打印 食品加工 应用 发展
在线阅读 下载PDF
肿瘤穿膜肽iRGD在肿瘤治疗中的应用研究 预览
19
作者 丁岩 彭文毓 +2 位作者 吕尚伟 马建岗 卢晓云 《生物工程前沿:中英文版》 2015年第1期15-20,共6页
抗肿瘤药物因难以渗透到实体瘤组织内部而严重影响了治疗效果。KazukiN等在2010年的Science上报道了肿瘤穿膜肽iRGD能够明显改善化疗药物在肿瘤组织中的渗透能力,提高药物疗效,由此引发了人们的广泛关注。本文就近年来应用iRGD进行肿... 抗肿瘤药物因难以渗透到实体瘤组织内部而严重影响了治疗效果。KazukiN等在2010年的Science上报道了肿瘤穿膜肽iRGD能够明显改善化疗药物在肿瘤组织中的渗透能力,提高药物疗效,由此引发了人们的广泛关注。本文就近年来应用iRGD进行肿瘤治疗方面取得的相关研究进展进行综述,主要介绍抗癌药物或递送系统经过iRGD的修饰或与iRGD协同注射在肿瘤治疗及成像方面的具体研究进展。这些研究结果显示肿瘤穿膜肽在提高肿瘤治疗效果方面有着良好的应用前景。 展开更多
关键词 肿瘤穿膜肽 iRGD 肿瘤治疗
在线阅读 下载PDF
肺结核合并支气管扩张患者外周血中 IL-35的检测及临床意义? 预览
20
作者 孔彬 刘淦斌 +7 位作者 向文玉 卢远彬 高宇驰 林东子 张俊爱 曾今诚 易来龙 徐军发 《国际检验医学杂志》 CAS 2015年第16期2289-2291,2294共4页
目的:检测单纯活动性肺结核(ATB)患者、ATB 合并支气管扩张患者及健康志愿者外周血血浆白细胞介素-35(IL-35)水平,并分析其临床意义。方法收集东莞市第六人民医院呼吸科确诊的 ATB 患者外周血,分为 ATB 合并支气管扩张组和单纯 A... 目的:检测单纯活动性肺结核(ATB)患者、ATB 合并支气管扩张患者及健康志愿者外周血血浆白细胞介素-35(IL-35)水平,并分析其临床意义。方法收集东莞市第六人民医院呼吸科确诊的 ATB 患者外周血,分为 ATB 合并支气管扩张组和单纯 ATB 组,以健康志愿者作为对照组。采用酶联免疫吸附试验(ELISA)检测血浆 IL-35水平,全自动血球分析仪检测外周血中性粒细胞、淋巴细胞百分比及绝对值。结果ATB 合并支气管扩张患者和单纯 ATB 患者血浆 IL-35水平显著高于健康志愿者,且 ATB 合并支气管扩张患者血浆 IL-35水平亦显著高于单纯 ATB 患者。ATB 合并支气管扩张患者外周血中性粒细胞绝对值及百分比较健康志愿者显著增高,但淋巴细胞百分比显著低于健康志愿者。相关性分析显示 ATB 患者外周血中性粒细胞绝对值与患者血浆 IL-35水平呈显著正相关。结论IL-35在肺结核合并支气管扩张的发病中可能起一定作用,检测 IL-35对肺结核合并支气管扩张的辅助诊断有重要参考价值。 展开更多
关键词 肺结核合并支气管扩张 白细胞介素-35 中性粒细胞 淋巴细胞
在线阅读 下载PDF
上一页 1 2 5 下一页 到第
使用帮助 返回顶部 意见反馈