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Alga. Channel High Electron Mobility Transistors with Ultra-Low Drain-Induced-Barrier-Lowering Coefficient

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Chinese Physics Letters 2013年第12期30卷 123-125页

作者： ha Wei ZhaNG Jin-Cheng ZhaO Sheng-Lei GE Sha-Sha WEN Hui-Juan ZhaNG Chun-Fu MA Xiao-Hua haO Yue Key Laboratory of Wide Band ga. Semiconductor Materials and Devices School of MicroelectronicsXidian UniversityXi'an 710071

The conventional Alga./ga. high electron mobility transistor(HEMT),the Alga./ga./Alga. HEMT,and the Al_(x)ga.(1-x)N/Al_(y)ga.(1-y)N HEMT are fabricated on sapphire substrates to study the drain-induced barrier-lowering(DIBL)*** is found that the Al_(x)ga.(1-x)N/Al_(y)ga.(1-y)N HEMT with Alga. channel has the lowest DIBL coefficient of 6.7 mV/V compared with the other two *** is attributed to the best two-dimensional electron ga. confinement of the Al_(x)ga.(1-x)N/Al_(y)ga.(1-y)N *** opinion is further confirmed by the conduction band diagrams and electron distribution calculated from the one-dimensional Poisson–Schrödinger equation.

关键词： Alga. sapphire drain

Compression Properties of Ti-Al-X Alloys in relation to Site Occupancies of Alloying Elements in TiAl and Ti_3Al

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Journal of Materials Science & Technology 1999年第6期15卷 536-540页

作者： Yulin ha O rui YANG, Yuyou CUI and Dong LI(Institute of Metal research, Chinese Academy of Sciences, 72 Wenhua road, Shenyang 110015, China)Wanfu ga.(Fushun Petroleum Institute, Dandong road, Fushun 113001, China) Chinese Acad Sci Inst Met Res Shenyang 110015 Peoples R China Fushun Petr Inst Fushun 113001 Peoples R China

room temperature compression properties of Ti-51Al-(1~2)X and Ti-26Al-(1~2)X alloys (X=***, Mn, Fe, Co. Ni, Zr, Nb, Mo, Ta, ga.or Sn) were measured in order to examine how the compression deformability correlates with the site occupancies of the alloying elements in γ-TiAl and α2-Ti3Al. The results showed that, for the γ phase, the compression ratio is not related to the site preference of the alloying elements in a simple way. For the α2 phase, the following correlation was observed between the compression ratio and the site occupancies of the investiga.ed elements, those which occupy Al sites decrease the deformability, while those occupying Ti sites (except V) improve the deformability of the α2 phase. Compression properties of dual-phase TiAl alloys based on Ti-46Al-(1, 3, 5)X were also measured at room temperature to test aHypothetica l mechanism of ductilization based on mechanical compatibility at phase *** was concluded that no simple relationship exists between the deformability of the dual-phase alloys and the properties of their constituent phases.

关键词： TiAl Ni Site Cr

Ectopic expression of soybean GmKNT1 in Arabidopsis results in altered leaf morphology and flower identity

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Journal of Genetics and Genomics 2008年第7期35卷 441-449页

作者： Jun Liu Da ha Zongming Xie Chunmei Wang Huiwen Wang Wanke Zhang Jinsong Zhang Shouyi Chen National Key Laboratory of Plant Genomics Institute of Genetics and Developmental Biology Chinese Academy of Sciences Beijing 100101 China

Plant morphology is specified by leaves and flowers, and the shoot apical meristem （SAM） defines the architecture of plant leaves and flowers. Here, we reported the characterization of a soybean KNOX gene GmKNT1, which was highly homologous to Arabidopsis STM. The GmKNT1 was strongly expressed in roots, flowers and developing seeds. Its expression could be induced by IAA, ABA and JA, but inhibited by ga.or cytokinin. Staining of the transgenic plants overexpressing GmKNT1-GUS fusion protein revealed that the GmKNT1 was mainly expressed at lobe region, SAM of young leaves, sepal and carpel, not in seed and mature leaves. Scanning electron microscopy （SEM） disclosed multiple changes in morphology of the epidermal cells and stigma. The transgenic Arabidopsis plants overexpressing the GmKNT1 showed small and lobed leaves, shortened internodes and small clustered inflorescence. The lobed leaves might result from the function of the meristems located at the boundary of the leaf. Compared with wild type plants, transgenic plants had higher expression of the SAM-related genes including the CUP, WUS, CUC1, KNAT2 and KNAT6. These results indicated that the GmKNT1 could affect multiple aspects of plant growth and development by regulation of downstream genes expression.

关键词： soybean ectopic expression GmKNT1 KNOX genes development

Novel Inhibitory Effects of Glycyrrhizic Acid on the Accumulation of Advanced Glycation End Product and Its receptor Expression

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Natural Products and Bioprospecting 2014年第6期4卷 325-333页

作者： Hong Sheng Cheng Joana Magdelene Xiao Fang Kong Athena Xin Hui Ng Weng Keong Chan So ha Ton Khalid Abdul Kadir School of Science Monash University Malaysia46150 Bandar SunwaySelangorMalaysia School of Medicine and Health Sciences Monash University Malaysia46150 Bandar SunwaySelangorMalaysia

Beneficial effects of glycyrrhizic acid(ga.,a bioactive extract of licorice root,in the prevention of metabolic syndrome have been consistently reported while advanced glycation end products(AGE)and receptor for advanced glycation end product(rAGE)are the leading factors in the development of diabetes *** aim of this study was to investiga.e the effects of ga.on the AGE-rAGE axis using high-fat/high-sucrose(HF/HS)diet-induced metabolic syndrome rat *** four male Sprague–Dawley rats were randomly assigned into three groups for 4 weeks:(1)Group A,normal diet with standard rat chow;(2)Group B,HF/HS diet;(3)Group C,HF/HS diet and oral administration of 100 mg/kg ga.per *** results showed that HF/HS diet elevated the fasting blood glucose level and insulin resistance index which was prevented by ga.*** treatment significantly lowered the circulating AGE independent of its glucose-lowering ***/HS diet also triggered rAGE upregulation in the abdominal muscles while ga.administration downregulated rAGE expression in the abdominal muscles,aorta and subcutaneous adipose *** conclusion,HF/HS diet could cause glucose intolerance,insulin resistance and upregulation of rAGE expression while ga.ameliorated the metabolic dysregulation besides exhibiting inhibitory effects on the AGE-rAGE axis.

关键词： Metabolic syndrome receptor for advanced glycation end product Licorice High-fat/high-sucrose diet

Impacts of Agricultural Activities on Land Degradation along the Bomboré river in Burkina Faso

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Agricultural Sciences 2023年第2期14卷 176-195页

作者： Joseph Nomwindé Kabore Elie Serge ga.tan Sauret Wennegouda Jean Pierre Sandwidi raoul Christian Ouedraogo Brahima Sorgho Senghor Campus Senghor University Ouagadougou Burkina Faso General Office of Plants Productions Ministry of Agriculture Animal and Fishery Resources Ouagadougou Burkina Faso National Center for Scientific and Technological research/National Institute for the Environment and Agricultural research Farak&#244ba Research Station Bobo Dioulasso Burkina Faso Higher School of Engineering University of Fada N’Gourma Fada N’Gourma Burkina Faso Alliance for the Green revolution Ouagadougou Burkina Faso Molecular Chemistry and Materials Laboratory Joseph KI-ZERBO University Ouagadougou Burkina Faso

Land along the Bomboré river in the rural commune of Mogtédo in Burkina Faso is experiencing degradation. The explanatory causes of this degradation constitute the subject of this study. To do this, a survey was conducted among agricultural producers deployed along the watercourse. Soil profiles were described and samples were taken to analyze pH, soil orga.ic carbon, soil orga.ic matter, total nitrogen, and texture. The rUSLE model approach based on landstat8 OLI/TIrS and SrTM satellite images dated December 17, 2021 with fairly good radiometric, spatial, and spectral resolution was used to calculate the land loss rate. In terms of results, the potentially irriga.le areas that spread out on both sides of the banks of the river cover 209.23 ha with a perimeter of 6.16 km. The number of irriga.ors is 26 producers and they grow 17.92 ha of vegetables. Soil analyzes indicate the presence of a moderate acid on the vertisol with a pH between 5.57 and 5.86. On the depth 0 - 30 cm of the horizon, the color of the horizons ranges from 5Yr4/2 on the talweg and on the right bank to 7.5Yr3/2 on the left bank and presents no risk of salinity because the electrical conductivity measured is less than 1dS/cm. The diagnosis of hydromechanical equipment shows that producers use 46 motor pumps for irriga.ion, of which 15 motor pumps run on ga.oline and 31 motor pumps on butane ga. with a ratio of 1.7 motor pumps per producer. The number of Polyvinyl Chloride (PVC) pipes used by producers in combination with a motor pump gives an average of 44 per farmer. In terms of mineral fertilization, the gross doses used by producers are 415.53 kg/ha of NPK and 201.55 kg/ha of urea, while the quantities of phytosanitary products are 3.99 l/ha of pesticides and 1.42 l/ha of herbicides. Agricultural activities emit about 222,436.66 kgCO2eq into the atmosphere, whose emissions from motor pumps represent 84.52% of these total emissions. The land loss estimate gives an average rate of 2.30

关键词： Agricultural Irriga.ion Land Degradation rUSLE Model Erosion rate Environment

Binding Energies of Screened Excitons in a Strained(111)-Oriented Zinc-Blende ga./Alga. Quantum Well Under Hydrostatic Pressure

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Journal of Semiconductors 2008年第2期29卷 234-239页

作者：哈斯花班士良内蒙古大学理工学院物理系呼和浩特010021

We investiga.e the binding energies of excitons in a strained （111）-oriented zinc-blende ga./Al0.3 ga..7 N quantum well screened by the electron-hole （e-h） ga. under hydrostatic pressure by combining a variational method and a selfconsistent procedure. A built-in electric field produced by the strain-induced piezoelectric polarization is considered in our calculations. The result indicates that the binding energies of excitons increase nearly linearly with pressure,even though the modification of strain with hydrostatic pressure is considered, and the influence of pressure is more apparent under higher e-h densities. It is also found that as the density of an e-h ga. increases,the binding energies first increase slowly to a maximum and then decrease rapidly when the e-h density is larger than about 1 ×10^11 cm^-2. The excitonic binding energies increase obviously as the barrier thickness decreases due to the decrease of the built-in electric field.

关键词： exciton strained zinc-blende quantum well pressure screened effect

多层螺旋CT三维重建技术诊断颌面部骨折的应用价值分析

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临床医学工程 2023年第7期30卷 887-888页

作者：赵萌萌高亚王文华河南科技大学第一附属医院影像中心河南洛阳471003 河南省职工医院放射科河南郑州450002 漯河市妇幼保健院放射科河南漯河462001

目的探讨多层螺旋CT三维重建技术诊断颌面部骨折的应用价值。方法选取64例疑似颌面部骨折患者作为研究对象,所有患者入院后均行X线片检查与多层螺旋CT三维重建技术检查。以手术病理结果为金标准,记录两种检查方法对颌面部骨折诊断的一致... 详细信息

目的探讨多层螺旋CT三维重建技术诊断颌面部骨折的应用价值。方法选取64例疑似颌面部骨折患者作为研究对象,所有患者入院后均行X线片检查与多层螺旋CT三维重建技术检查。以手术病理结果为金标准,记录两种检查方法对颌面部骨折诊断的一致性,并比较两种检查方法对颌面部骨折的诊断效能。结果64例疑似颌面部骨折患者中,53例经手术病理确诊为颌面部骨折,11例为非颌面部骨折。κ检验分析结果显示,X线片检查结果与手术病理结果的一致性中等(κ=0.592,P<0.05);多层螺旋CT三维重建技术检查结果与手术病理结果的一致性较高(κ=0.894,P<0.001)。多层螺旋CT三维重建技术诊断颌面部骨折的灵敏度(96.23%vs.77.36%)、特异性(90.91%vs.45.45%)及准确性(95.31%vs.71.88%)均高于X线片(P<0.05)。结论多层螺旋CT三维重建技术对颌面部骨折的诊断效能较高,值得临床推广应用。

关键词：多层螺旋CT三维重建技术颌面部骨折诊断效能

肩锁关节脱位闭合穿针固定定位导向器的研制和临床应用

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中国骨伤 2011年第3期24卷 186-188页

作者：周松郝永强史晓林赵焕利高开拓孙金谞临沂市人民医院骨伤科山东临沂276003 上海交通大学附属第九人民医院浙江中医药大学附属第二医院

目的:通过研究一种方便于闭合复位经皮缝合内固定治疗肩锁关节脱位的辅助工具观察其临床应用效果。方法:自2008年6月至2009年12月,应用自行设计的肩锁关节脱位闭合穿针固定定位导向器穿针固定配以经皮修复肩锁韧带治疗肩锁关节脱位36例... 详细信息

目的:通过研究一种方便于闭合复位经皮缝合内固定治疗肩锁关节脱位的辅助工具观察其临床应用效果。方法:自2008年6月至2009年12月,应用自行设计的肩锁关节脱位闭合穿针固定定位导向器穿针固定配以经皮修复肩锁韧带治疗肩锁关节脱位36例。其中男24例,女12例;年龄20～61岁,平均38.6岁。术前受伤时间3.5～72h,平均15.2h。均为TossyⅢ度肩锁关节脱位,无合并锁骨骨折。总结手术所用时间、术中出血量及临床效果。结果:术中未发生锁骨下神经、血管损伤,平均手术时间20min,平均出血量10ml,X线片示肩锁关节固定克氏针位置准确。术后6周取针,随访2～26个月,平均14.3个月,按Karlsson标准评定临床效果满意,优22例,良13例,差1例。结论:此方法简便易行,缩短了手术时间,费用低,且无手术切口瘢痕形成,保证了体表美观,属微创范围,便于推广应用。

关键词：肩锁关节脱位骨折固定术缝合技术

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高频干扰下南京紫金山生态智慧型对策探析

北京林业大学学报（社会科学版） 2015年第2期14卷 28-33页

作者：张学研崔志华哈日其嘎南京林业大学风景园林学院燕山大学建筑工程与力学学院

以南京紫金山国家森林公园为例,探究森林公园地理位置由城郊入城后所受的干扰形式、强度、频率的变化。结果表明频繁的休闲活动、不合理开发、快速交通网络的包围、分割及偷猎等人为干扰造成紫金山环境承载压力加大、水土流失、白色污... 详细信息

以南京紫金山国家森林公园为例,探究森林公园地理位置由城郊入城后所受的干扰形式、强度、频率的变化。结果表明频繁的休闲活动、不合理开发、快速交通网络的包围、分割及偷猎等人为干扰造成紫金山环境承载压力加大、水土流失、白色污染、交通拥堵、生物多样性降低、声景观协调度减弱。规划将紫金山划分为生态保育区、核心敏感区、智慧旅游区和人文休闲区,通过优化林分结构、保护野生动物、强化防火监查等生态调整,并利用信息技术控制游人量及进山车辆,改善旅游体验,完善便民服务体系,监测林业资源等智慧管控措施优化空间分区管理方式,构建生态智慧型复合发展模式,为森林公园经营管理提供重要指导。

关键词：人为干扰生态价值智慧管控紫金山