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- 与 experimental 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The experimental results show that the experimental data are less than the correlations values and the experimental data are almost constant. It is the predomination from natural convection to the conjunct effect of natural convection and conduction that results in the phenomenon.
这说明微细铜丝与水的换热由对流为主转变为对流与导热共同作用为主或是纯导热,从而导致了实验值小于常规尺寸下的理论计算值。
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A prediction model has been proposed to deal with threshold voltage shift as a function of 1MeV neutron flux and gate oxide thickness, and to deal with room-temperature annealing of threshold voltage shift induced-by 〓Coγ as a function of electric field and gate oxide thickness. The commonness and individuality of MOS device degradation between hot-carrier effect and ionizing radiation were investigated. The dependence of substrate current, gate current and threshold voltage shift due to hot-carrier on gate oxide thickness were simulated with MEDICI-2D simulator. The photocurrents of PN junction and bipolar transistor were studied. Their transient responses on varied bias voltages, pulse durations and absorbed doses were simulated. The influences of NPN base width on base and collector photocurrents were investigated. We also studied 1MeV neutron displacement damage in PN junction, and calculated reverse current leakage under the neutron flux of 2. 67×10〓 per square centimeter. 3 The study of nondestructive screening method for MOS radiation tolerance A theoretical and experimental study of nondestructive screening methods for radiation tolerance of nMOS and pMOS were firstly fulfilled. We determined the informative parameters pertinent to the method and proposed how to deal with experimental data and verify obtained results statistically, as well as make the required steps for nondestructive screening. Based on the experimental data of 180 samples of discrete pMOS devices, the relation between sample quantity and correlation coefficient, screening equation, and other significant results were obtained from the threshold voltage shifts of pre-and post-irradiation samples.
二、分立器件电离和位移辐射损伤响应研究在国内首次开展了电离辐射引起的氧化层阈值电压漂移和退火理论研究,编程计算了1MeV中子引起的MOS器件阈值电压漂移与中子通量及栅氧厚度的关系,计算了〓Coγ光子引起的阈值电压漂移及退火的时效曲线与纵向电场和栅氧厚度的关系等,对评估MOS型集成电路电离损伤和加固方法研究,以及论文中开展的MOSFETs无损筛选方法研究奠定了基础;分析了MOS器件热载流子损伤效应与辐射电离损伤效应之间的异同性,利用二维模拟软件MEDICI-2D模拟了衬底电流和栅电流,在不同栅氧厚度下随栅压的变化曲线,计算了热载流子效应造成的阈值电压漂移,研究结果对当前存在的以热载流子效应研究取代电离辐射损伤实验研究的设想,具有重要的参考价值;开展了PN结和双极晶体管电离光电流研究,计算了不同偏压、不同辐射脉宽和不同吸收剂量下PN结光电流的瞬时响应,计算了不同辐射脉宽下NPN晶体管基极电流和收集极电流的瞬时响应,以及基区宽度对NPN晶体管光电流的影响,研究结果对双极器件抗电离辐射损伤响应及加固方法研究具有重要意义;在国内首次开展了器件位移损伤的理论研究,分析了辐射产生的缺陷对电性能的影响,计算了注量为2.67×10〓cm〓的1MeV中子产生的缺陷对PN结反向电流的影响。
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In the experimental tectum, the expression of GFAP in the right SO was higher than the expression of GFAP in the left SO during 1d-60d after after optic nerve damage. The expression of GFAP in the right SO was familiar with the expression of GFAP in the left SO during 85d after optic nerve damage, but the expression of GFAP in SO in the experimental tectum was higher than that in the normal tectum. The result of GFAP expression in the experimental retina and tectum showed that AStrocyte took part in the optic nerve regeneration and it might play an important role in optic nerve regeneration accidents.
在损伤1d后视网膜的神经纤维层和外核层外缘可见较为深的GFAP染色,在损伤3d后视网膜从内网层经内核层至外网层出现稀疏的垂直于视网膜长轴分布的线条状GFAP染色,随时间推移,伤后5d、7d、14d、28d上述染色进一步加深密集,到伤后60d和85d上述染色减弱,阴性对照的视网膜各层未见GFAP阳性染色;(5)正常鲫鱼视顶盖中在SO层内有较浅的黄棕色线条状GFAP染色,在SFGC层
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The experimental values of resistance force and power for the biomimetic furrow opener surface with UHMWPE tubular section ridges at 100 mm depth and 0.28 m/sec speed were 0.60 kN and 0.16 kW, while at 100 mm depth and 0.92 m/sec speed, the values were 0.80 kN and 0.72 kW. At 135 mm depth and 0.28 m/sec speed, the biomimetic furrow opener surface with UHMWPE tubular section ridges recorded 0.76 kN and 0.21 kW, while at 135 mm depth and 0.92 m/sec speed, the values were 0.95 kN and 0.85 kW. The predicted and experimental values of resistance force and power for the conventional surface furrow opener were higher than predicted and experimental values for the biomimetic furrow opener surface with UHMWPE tubular section ridges.
对于超高分子量聚乙烯材料仿生脊型非光滑结构表面,当耕深100 mm和耕作速度0.28 m/sec时,实测的仿生开沟器的土壤阻力和动力消耗分别为0.6kN和0.16kW;当耕深100 mm和耕作速度0.92 m/sec时,实测的仿生开沟器的土壤阻力和动力消耗分别为0.8kN和0.72kW;当耕深135 mm和耕作速度0.28 m/sec时,实测的仿生开沟器的土壤阻力和动力消耗分别为0.76kN和0.21kW;而当耕深135 mm和耕作速度0.92 m/sec时,实测的仿生开沟器的土壤阻力和动力消耗分别为0.95kN和0.85kW。
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From the angle of designing economics experiments, we conclude and presente five aspects that researchers must pay attention to, that is, experimental procedure standardization, experimental motivation saliency, experimental instruction unbiasedness, calibration definition, and design parallelism.
从经济学实验设计的角度,总结提出了科学的经济学实验所必须注意的五个方面,即实验程序标准化、实验激励突显化、实验语言无偏化、比较基准明确化、与现实的一致性。
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objective to study gastrodia elata blume to effect tau protein,sod,mda expression in gyrus hippocampi and cerebral cortex of experimental mice.methods to inject okadaic acid to mice ventriculus lateralis and to measure tau protein level,sod activity and lipid superoxide mda content of sod control group,oa injection group,oa and gastiodia elata injection solution group.results tau protein of experimental group(p<0.05/p>0.05),sod was lower than model group(p<0.001) and was higher than control group(p<0.05).conclusion gastrodia elata blume can increase sod activity and reduce tau protein expression and superoxide lipid forming in brain tissue of experimental dementia mice caused by oa.it can prevent and treat ad.
目的 观察天麻对痴呆模型大鼠海马、皮质神经元微管相关蛋白、超氧化物歧化酶和脂质过氧化物丙二醛表达的影响,探讨其治疗阿尔茨海默病(alzheimer disease,ad)的作用机制。方法用冈田酸(okadaic acid,oa)注射大鼠侧脑室造模,测定模型组、实验组、对照组海马和皮质tau蛋白、sod、mda的含量。结果实验组tau蛋白低于模型组(p<0.001),高于对照组(p<0.05);sod高于模型组(p<0.001)和对照组(p<0.05);mda低于模型组(p<0.001),高于对照组(p<0.05)。结论天麻可增强oa致实验性痴呆大鼠脑组织sod活性,降低mda蓄积和tau蛋白生成,具有防治阿尔茨海默病的作用。
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Methods: Apinoid wistar white rats ,quality standard was about 200 ? 30 gram (belong to SPF animal in experimental animal center ,FMMU)were randomly divided into experimental group and control group.Experimental group was gived hypodermic injection at a dose of 0.3ml/100g by 60 percent carbon tetrachloride olive solution every four days and drinked 50ml/L ethyl alcohol. we would divide course of cirrhotic rats models into three stages : early stage (the 25th day) is fatty degenerationnecrosis ;middle stage (the 45th day) is proliferation of fibrous tissue ; advanced stage (the 65th day) is formation of pseudolobuli .
实验方法:h级Wistar大鼠,质量在200士309之间(第四军医大学实验动物中心 SPF动物人随机分为实验组门 8只)和对照组只人实验组用 60%四氯化碳橄榄油溶液按 0.3ml/100g体重皮下注射,每四大一次,饮用5%乙醇,参照韩德五等将肝硬变大鼠模型分期,人为地将肝硬变大鼠病程分为H期:早期(第25大)脂变坏死期;中期(第45天)纤维增生期;晚期(第65天)假小叶形成期。
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In this thesis,the AM1,MNDO,MINDO/3(mainly AM1)and INDO/S-CI semiempirical MO methods were used toinvestigate the excited-state intramolecular protontransfer reactions of salicylic acid derivatives—salicylic acid,methyl salicylate,salicylaldehyde,o-hydroxyaceto-phenone,salicylamide and 3-hydroxy-picolinamide (6 conformers and 2-3 anion species);2-(2'-hydroxy-5' methylphenyl) benzotriazole(4 conformers),2-(2' hydroxyphenyl) benzimidazole (3 conformers and 3anion species),Bis-2,5-(2-benzoxazolyl)hydroquinone(3 conformers),2-(2'-hydroxyphenyl)benzothiazole(2conformers) and 7-azaindole dimer (2 conformers).Theinvestigations were described as follows.Geometry optimization,relative stability andhydrogen bonding energy First,for sylicylic acid derivative molecules,the AM1,MNDO and MINDO/3 methods were used toinvestigate ground-state geometry optimization,energies,relative stabilities and hydrogen-bondingenergies on the five kinds of the molecules(designing 6 conformers and 2-3 anion species).Comparing with experimental data,the optimizedgeometry,the order of stability,the hydrogen-bonding energies and the distances between O-O in O-H..O hydrogen bonds by AM1 method were in agreementwith the experimental data,however,the C-C bondlengths optimized by MNDO and MINDO/3 were longer,C-O and O-H bond lengths were shorter;for C-N bondlengths,the results opitimized by MNDO method werethe same as those by AM1 method,nevertheless the C-Nbond lengths given by MINDO/3 method were muchshorter.For some sylicylic acid derivatives(e.g.methyl salicylate,salicylamide),the order ofstabilities on the conformers given by MNDO andMINDO/3 methods were not in agreement with theexisting conformers deduced by experimental methods,and the hydrogen bonding energies calculated by MNDO.and MINDO/3 methods were smaller.Second,the studyon the other systems found that the optimizedgeometry of the proton-transfered product with INDOmethod could not be obtained,only could theoptimized geometry of reactant be obtained,and thecalculated hydrogen bonding energies were greater.Many results of calculation indicated that the studyon the excited-state intramolecular proton transferreaction system using AM1 method was suitable andreliable.
本论文用AM1、MNDO、MINDO/3(主要是AM1)和INDO/S-CI半经验分子轨道方法对水杨酸衍生物系列——水杨酸、水杨酸甲酯、水杨醛、O-羟基乙酰苯酮、水杨酰胺和3-羟基吡啶酰胺(6种异构体和2-3种阴离子);2-(2'-羟基-5'-甲基苯基)苯并三〓唑(4种异构体);2-(2'-羟基苯基)苯并咪唑(3种异构体和3种阴离子);2,5-二间氮杂氧茚氢醌(3种异构体);2-(2'-羟基苯基)间〓杂硫茚(2种异构体)和7-〓吲哚二体(2种异构体)的激发态分子内质子转移反应在以下几个方面进行了较系统的理论研究:几何构型优化和相对稳定性及氢键能首先以水杨酸衍生物系列分子为例,用AM1、MNDO和MINDO/3方法考察了5种分子(每种分子设计6种异构体和2-3种阴离子)的基态几何构型优化,能量、相对稳定性和氢键能计算,通过和实验数据进行比较,AM1方法给出的优化几何构型、稳定性次序、氢键能和O—H。。。O氢键的0—0距离与实验数据吻合最好,MNDO和MINDO/3方法优化的C-C键长偏长,C-O键和O-H键长偏短;对于C-N键长,MNDO和AM1优化结果差别不大,而MINDO/3给出了过短的C-N键长,MNDO和MINDO/3方法给出的有些水杨酸衍生物分子(如水杨酸甲酯和水杨酰胺)异构体的稳定性次序和实验上推测的可存在异构体结果不一致,MNDO和MINDO/3方法给出的氢键能偏低,对其他体系的研究发现INDO方法常常不能得到质子转移产物的优化几何构型,只能得到反应物的优化构型,并且估算的氢键能偏高,大量的计算结果表明AM1方法对本论文研究的激发态分子内质子转移反应体系是适宜和可靠的。
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At 4 weeks following implantation, cells on the surface of coralline hydroxyapatite were found and connective tissues were seen in the material pores in the experimental group. Cells on the coralline hydroxyapatite were observed only in the control group. At 8 weeks, new bone formation was detected on the surface of coralline hydroxyapatite; bony tissue deposition and a few chondroid tissues were found in the pores or surrounding the pores in the experimental group. A few fibrous connective tissues were observed in the control group. At 12 weeks, abundant mature woven bone was detected on the surface of coralline hydroxyapatite; medullary cavity-like structure and vessels were found in some regions in the experimental group. No new bone or bony tissues were found in the control group.
植入材料后4周,实验组可见珊瑚羟基磷灰石表面有细胞生长,孔隙内有结缔组织长入;对照组仅见珊瑚羟基磷灰石表面有细胞生长。8周时珊瑚羟基磷灰石表面有新生骨形成,孔隙内和孔隙边缘可见骨样组织沉积和少量软骨样组织形成;对照组仅见少量纤维结缔组织长入。12周时珊瑚羟基磷灰石材料表面有较多成熟编织骨形成,部分区域可见髓腔样结构形成,并有血管长入;对照组仍未见新骨及骨样组织形成。
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Composition of suspension will chang from titanium monoxide to titanium dioxide during standstill procedure. Experimental results show that the proposed method can successfully prepare the anatase phase of titanium dioxide .In the photocatalysis experiment, the prepared titanium dioxide nanofluid absorbs the Ultraviolet when light wavelength was 360 to 380 nm. Adsorption experimental results show that the efficiency of absorbing methylene blue using TiO2 is higher than that for TiO2 (Degussa P-25) or ZnO. Depigmentation of methylene blue experimental using TiO2 can depigmentize methylene blue reach 100% in 60 min.
悬浮液所含之奈米颗粒在静置过程中,成份方面会由似一氧化钛转变为二氧化钛;在结晶组成方面,所制备之二氧化钛颗粒之结晶组成为锐钛矿结构;在光催化方面,所制备之奈米二氧化钛悬浮液在光波长360nm~380nm时产生吸收紫外光现象,在吸附实验中本制程所制备的二氧化钛颗粒的吸附效果优於商用的二氧化钛及氧化锌,在亚甲基蓝的脱色实验中本制程所制备的二氧化钛颗粒能在60分钟内达到脱色率100%。
- 推荐网络例句
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This one mode pays close attention to network credence foundation of the businessman very much.
这一模式非常关注商人的网络信用基础。
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Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.
扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。
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There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.
双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。