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The Effects of Compound Chinese Medicine Immune Additives on Growth Performance and Antioxidant Capacity of Acipenser schrenckii 被引量:4
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作者 LIU Xun WANG Di +2 位作者 LU Tong-yan LI Shao-wu LIU Hong-bai 《Animal Husbandry and Feed Science》 CAS 2012年第5期221-225,共5页
[ Objective] The aim was to explore the effects of compound Chinese medicine on growth and antioxidant capacity of Acipenser schrenckii, and to provide a foundation for the application of traditional Chinese medicine ... [ Objective] The aim was to explore the effects of compound Chinese medicine on growth and antioxidant capacity of Acipenser schrenckii, and to provide a foundation for the application of traditional Chinese medicine as immune additives in sturgeon aquaculture production. [Methods] Three kinds of compound Chinese medicines (respectively called A, B and C) were added into basic material feed as feed additives, continuous fed 1 ^+ age Acipenser schrenckii for 35 d, then weight gain rate was determined and superoxide dismutase (SOD) activity, malondialdehyde (MDA) content, total antioxidant capacity (T-AOC) and glutathione peroxidase (GSH-PX) activity in serum and liver were detected. [ Results ] Chinese medicine formulae could increase the superoxide dismutase (SOD) activity, total antioxidant capacity (ToAOC) and glutathione per- oxidase (GSH-PX) in serum and liver of sturgeon. Especially SOD enzyme activity of serum in the three formulae groups was significantly higher ( P 〈 0.05) than control group, SOD enzyme activities of fish liver in group A and C were significantly higher ( P 〈 0.05) than control group; T-AOC activities of serum and liver in the three formulae groups were both incressed, but had no significant differences with that of the control group; only GSH-PX activities of fish serum in group B and C had significant differences (P〈0.05) with that of control group, GSH-PX activities of liver in the three formulae groups had no significant differences with that of control group; and traditional Chinese medicine could significantly reduce malondialdehyde (MDA) content of sturgeon serum, MDA contents of serum and liver in three formulae groups had significant differences (P 〈 0.05) with that of control group. [ Conclusion] The selected three kinds of compound Chinese medicine additives had different degree of ability to improve sturgeon antioxidant function. 展开更多
关键词 compound Chinese medicine Acipenserschrenckii growth performance ANTIOXIDATION
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Study on the relationship between the diameter of the compound eye and the growth of the Antarctickrill 被引量:1
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作者 孙松 王荣 《Chinese Journal of Polar Science》 1996年第2期87-93,共7页
Correlation between the body length and the diameter of the compound eyeof the Antarctic krill Euphausis sulfa was examined. From the samples collected inthe late summer, it shows that there is an apparent exponential... Correlation between the body length and the diameter of the compound eyeof the Antarctic krill Euphausis sulfa was examined. From the samples collected inthe late summer, it shows that there is an apparent exponential relationship betweeneye diameter and the body length. From the laboratory population, it seems that whenthe krill shrink, the diameter of the compound eye does not decrease. It is more reliableto use the eye diameter as krill growth index than they length. The ratio of the theylength to the diameter of the compound eye offers another method for detecting the effect of shrinking in natural populations of krill. 展开更多
关键词 Antarctic krill growth SHRINKAGE compound eye.
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Effects of Magnesium Compound with Fertilizer on Daylily (Hemerocallis citrina Baroni) Growth and Soil Nutrients 被引量:2
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作者 SUN Nan ZENG Xi-bai +2 位作者 LI Ju-mei GAO Ju-sheng WANG Bo-ren 《Agricultural Sciences in China》 CAS CSCD 2006年第2期123-129,共7页
Effects of two kinds of magnesium compound with fertilizer on Daylily (Hemerocallis citrina Baroni) growth, yield, and soil nutrients in red soil were studied. The results indicated that significant effects of magne... Effects of two kinds of magnesium compound with fertilizer on Daylily (Hemerocallis citrina Baroni) growth, yield, and soil nutrients in red soil were studied. The results indicated that significant effects of magnesium applied to soils were observed in increasing Daylily (Hemerocallis citrina Baroni) yield, improving its growth, and strengthening its antivirus property as well as increasing the amount of exchangeable Mg, N, P, and K in red soil. In particular, the effects of magnesium compound fertilizer Ⅱ (MCF2) with higher Mg content were better than that of the others, which increased Daylily (Hemerocallis citrina Baroni) yield by 57.4, 32.8, and 14.5% compared to that of control treatment (CK), chemical fertilizer with nitrogen, phosphorus, potassium treatment (CF), and magnesium compound fertilizer Ⅰ treatment (MCF1) with lower Mg content. It increased soil Alkali N, available P, exchangeable K, and exchangeable Mg by 94.9, 46.5, 31.1, and 35.3%, respectively, compared with that of CK treatment. Therefore, the application of magnesium compound with fertilizer is an optimum method for improving red soil quality. 展开更多
关键词 magnesium compound fertilizer Daylily (Hemerocallis citrina Baroni) growth soil nutrient
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Crystal Growth of Cu6(Ge,Si)6O18&#183;6H2O and Assignment of UV-VIS Spectra in Comparison to Dehydrated Dioptase and Selected Cu(II) Oxo-Compounds Including Cuprates
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作者 Hans Hermann Otto 《World Journal of Condensed Matter Physics》 2017年第3期57-79,共23页
Low-dimensional quantum spin systems with the Cu2+ central ion are still in the focus of experimental and theoretical research. Here is reported on growth of mm-sized single-crystals of the low-dimensional S = 1/2 spi... Low-dimensional quantum spin systems with the Cu2+ central ion are still in the focus of experimental and theoretical research. Here is reported on growth of mm-sized single-crystals of the low-dimensional S = 1/2 spin compound Cu6(Ge,Si)6O18&#183;6H2O by a diffusion technique in aqueous solution. A route to form Si-rich crystals down to possible dioptase, the pure silicate, is discussed. Motivated by previously reported incorrect assignments of UV-VIS spectra, the assignment of dd excitations from such spectra of the hexahydrate and the fully dehydrated compound is proposed in comparison to dioptase and selected Cu(II) oxo-compounds using bond strength considerations. Non-doped cuprates as layer compounds show higher excitation energies than the title compound. However, when the antiferromagnetic interaction energy as Jz&#183;ln(2) is taken into account for cuprates, a single linear relationship between the Dqe excitation energy and equatorial Cu(II)-O bond strength is confirmed for all compounds. A linear representation is also confirmed between 2A1g energies and a function of axial and equatorial Cu-O bond distances if auxiliary axial bonds are used for four-coordinated compounds. The quotient Dt/Ds of experimental orbital energies deviating from the general trend to smaller values indicates the existence of H2O respectively Cl&minus;axial ligands in comparison to oxo-ligands, whereas larger Dt/Dqe values indicate missing axial bonds. The quotient of the excitation energy 2A1g by 2&#183;2Eg-2B2g allows checking for correctness of the assignment and to distinguish between axial oxo-ligands and others like H2O or Cl&minus;. 展开更多
关键词 Dioptase Ge-Dioptase Copper(II) compoundS CUPRATES Crystal growth UV-VIS Spectroscopy EPR Color d-d Excitations Bond Strength Super-Exchange Interaction
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Effects of Compound Plant Extract on Growth Performance of Sujiang Pigs
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作者 Yong TAO Shanmao REN +2 位作者 Huifan JI Hualongchuan QIU Wenhong JIANG 《Asian Agricultural Research》 2018年第11期77-78,94,共3页
The experiment was conducted to investigate the effects of compound plant extract on the growth performance and economic benefits of Sujiang pigs during the fattening period. A total of 50 Sujiang pigs,weighing about ... The experiment was conducted to investigate the effects of compound plant extract on the growth performance and economic benefits of Sujiang pigs during the fattening period. A total of 50 Sujiang pigs,weighing about 60 kg( there were no significant differences in the weight of the pigs),were selected. They were randomly and evenly divided into five groups: control group,A,B,C and D groups. The pigs in the control group were fed basal diet. For the pigs in the A,B,C and D groups,per kg of basal diet was added with 100,200,300 and 400 mg of compound plant extract,respectively. The experimental duration was 44 d. The results showed that in the treatment groups,the average daily weight gains were 15. 57%,20. 68%,17. 95% and 7. 31%,respectively higher than that of the control group,the feed-gain ratios were13. 29%,16. 92%,15. 11% and 11. 48%,respectively lower than that of the control group( P > 0. 05),and the economic benefits were62. 65,83. 23,72. 50 and 42. 11 yuan,respectively higher than that of the control group. In conclusion,the addition of compound plant extract in the basal diet of Sujiang pigs during fattening period can improve the economic benefit,and the economic benefit is best when the addition amount is 200 mg/kg. 展开更多
关键词 复方植物提取物 育肥期 饲养方法
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Growth and characterization of single crystals of the quaternary TlGaSeS compound
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作者 S. R. Alharbi 《Chinese Physics B》 SCIE EI CAS CSCD 2013年第5期564-567,共4页
The electrical conductivity and Hall effect for T1GaSeS crystals have been investigated over a wide temperature range. The crystals we used are grown by a modified Bridgman technique and possess p-type conductivity. T... The electrical conductivity and Hall effect for T1GaSeS crystals have been investigated over a wide temperature range. The crystals we used are grown by a modified Bridgman technique and possess p-type conductivity. The energy gap has been found to be 1.63 eV, whereas the ionization energy is 0.25 eV. The variations of the Hall mobility as well as the carrier concentration with temperature have been investigated. The scattering mechanisms of the carder are checked over the whole investigated temperature range. Furthermore, the diffusion coefficient, relaxation time, and diffusion length of holes are estimated. 展开更多
关键词 crystal growth DC electrical conductivity Hall effect T1GaSeS compound
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补气活血合剂干预脑缺血再灌注模型大鼠相关因子及自噬蛋白的表达
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作者 陈玉宁 蒋颖 +4 位作者 廖翔宇 陈琼君 熊亮 刘悦 刘通 《中国组织工程研究》 CAS 北大核心 2025年第6期1152-1158,共7页
背景:补气活血合剂治疗气虚痰瘀型缺血性脑卒中有显著的临床疗效,然而其具体起效机制尚不明确。目的:观察补气活血合剂对脑缺血再灌注模型大鼠血管内皮细胞生长因子、碱性成纤维细胞生长因子、脑源性神经营养因子及自噬蛋白Beclin1、p6... 背景:补气活血合剂治疗气虚痰瘀型缺血性脑卒中有显著的临床疗效,然而其具体起效机制尚不明确。目的:观察补气活血合剂对脑缺血再灌注模型大鼠血管内皮细胞生长因子、碱性成纤维细胞生长因子、脑源性神经营养因子及自噬蛋白Beclin1、p62表达的影响。方法:取40只雄性SD大鼠,采用随机数字表法分为假手术组、模型组、补气活血合剂组与自噬抑制剂组,每组10只。模型组、补气活血合剂组与自噬抑制剂组建立大脑缺血再灌注损伤模型,补气活血合剂组大鼠再灌注2 h后灌胃给予补气活血合剂(6.49 g/kg,每天分3次给药),自噬抑制剂组大鼠再灌注2 h后灌胃给予补气活血合剂(6.49 g/kg,每天分3次给药)+腹腔注射自噬抑制剂3-甲基腺嘌呤(灌胃前2 h注射,灌胃第1-3天注射),假手术组、模型组灌胃给予等量生理盐水,连续灌胃给药7 d。末次给药24 h后,进行大鼠神经功能、脑梗死体积、脑组织形态及大脑缺血皮质区血管内皮细胞生长因子、碱性成纤维细胞生长因子、脑源性神经营养因子及自噬蛋白Beclin1、p62表达检测。结果与结论:①Zea-Longa评分结果显示,造模后大鼠神经功能受到严重损伤,补气活血合剂组大鼠神经功能损伤轻于模型组、自噬抑制剂组(P<0.05);②TTC染色结果显示,模型组、补气活血合剂组与自噬抑制剂组大鼠均可见大脑梗死灶,补气活血合剂组大鼠脑梗死体积低于模型组、自噬抑制剂组(P<0.05);③缺血侧脑组织苏木精-伊红染色结果显示,模型组神经细胞间有较大的空隙且排列不整齐,神经细胞出现胞质凝集、核固缩现象;补气活血合剂组和自噬抑制剂组神经细胞间隙减小且排列较规律,存在部分细胞出现胞质凝集、核固缩表现;④免疫组化染色结果显示,血管内皮生长因子多表达在神经元细胞、神经胶质细胞及毛细血管内皮;碱性成纤维细胞生长因子和脑源性神经营养因子多表达在神经元细胞、神经胶质细胞,4组间血管内皮细胞生长因子、碱性成纤维细胞生长因子、脑源性神经营养因子表达比较差异无显著性意义(P>0.05);⑤Western blot检测结果显示,与假手术组相比,模型组Beclin1蛋白表达降低(P<0.05),p62蛋白表达升高(P<0.05);与模型组相比,补气活血合剂组Beclin1蛋白表达升高(P<0.05),p62蛋白表达降低(P<0.05);与补气活血合剂组相比,自噬抑制剂Beclin1蛋白表达降低(P<0.05),p62蛋白表达升高(P<0.05);⑥结果表明,补气活血合剂可通过促进自噬来减轻大鼠脑缺血再灌注损伤。 展开更多
关键词 补气活血合剂 缺血再灌注 神经功能缺损 自噬 血管内皮生长因子 碱性成纤维细胞生长因子 脑源性神经营养因子 BECLIN1 P62
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Phase Diagram, Growth and Optical Property of the LaBWO_6 Crystal 被引量:2
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作者 孙传祥 林州斌 +2 位作者 张莉珍 黄溢声 王国富 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2013年第7期1088-1092,共5页
The phase diagram, growth and optical property of LaBWO6 crystal are reported. LaBWO6 crystal melts congruently at 1078 ℃. Based on the pseudo-ternary phase diagram of LaBWO6-(Li2WO4/LiF) -B203, the LaBWO6 crystals... The phase diagram, growth and optical property of LaBWO6 crystal are reported. LaBWO6 crystal melts congruently at 1078 ℃. Based on the pseudo-ternary phase diagram of LaBWO6-(Li2WO4/LiF) -B203, the LaBWO6 crystals have been firstly grown by the flux method. LaBWO6 crystal crystallizes in the orthorhombic system, space group P222 with a = 4.1, b = 10.31 and c = 21.71 A. LaBWO6 Crystal exhibits high transparency in a range from 327 to 1100 nm. The absorption edge of the crystal in the UV range is at 293 nm. The SHG efficient of LaBWO6 crystal is 0.3 times as large as that of the KDP crystal. 展开更多
关键词 tungstem borate compound crystal growth from solution optical properties
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Synthesis, Growth and Characterization of Organic Nonlinear Optical Single Crystals of 4-Bromo-4’-Methyl Benzylidene Aniline 被引量:2
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作者 L. Jothi R. Ramesh Babu K. Ramamurthi 《Journal of Minerals and Materials Characterization and Engineering》 2014年第4期308-318,共11页
Organic nonlinear optical material of 4-bromo-4’-methyl benzylidene aniline (BMBA) was synthesized and single crystal of BMBA was grown by solvent evaporation method at room temperature using ethanol as solvent. The ... Organic nonlinear optical material of 4-bromo-4’-methyl benzylidene aniline (BMBA) was synthesized and single crystal of BMBA was grown by solvent evaporation method at room temperature using ethanol as solvent. The crystalline nature of the grown crystals was confirmed using powder X-ray diffraction studies. The crystals were also characterized by single crystal X-ray diffraction method and their lattice parameters were determined. Thermal properties of BMBA were evaluated with thermogravimetric, differential thermal and differential scanning calorimetric analyses. Fourier transform infrared and FT-Raman spectral studies were carried out on the BMBA material to confirm the synthesized compound. 1H and 13C-nuclear magnetic resonance spectral studies were recorded to elucidate the structure of the grown crystals. Fluorescence spectrum recorded shows a peak at 485 nm. UV-Vis-NIR spectral analysis shows transmittance of ~92% in the visible region. The mechanical stability was analyzed by Vickers microhardness tester and the work hardening coefficient of the grown crystal was calculated. Second harmonic generation efficiency of the grown crystal measured by Kurtz powder technique is ~1.8 times that of potassium dihydrogen orthophosphate. 展开更多
关键词 Nonlinear Optical Material ORGANIC compounds Crystal growth THERMOGRAVIMETRIC Analysis
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Hydrothermal Processing,Characterization and Theoretical Calculations of a Copper(Ⅱ) Compound with 1,10-Phenanthroline Derivative Ligand:2-(4-Methoxyphenyl)-1H-imidazo[4,5-f][1,10] Phenanthroline 被引量:1
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作者 黄艳菊 倪良 +1 位作者 朱彦煜 姚加 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2012年第3期353-360,共8页
The metal-organic compound [Cu(MOPIP)2(OH)2] 1(MOPIP = 2-(4-methoxy-phenyl)-1H-imidazo[4,5-f][1,10] phenanthroline) was hydrothermally synthesized and structurally characterized by elemental analysis,Fourier-t... The metal-organic compound [Cu(MOPIP)2(OH)2] 1(MOPIP = 2-(4-methoxy-phenyl)-1H-imidazo[4,5-f][1,10] phenanthroline) was hydrothermally synthesized and structurally characterized by elemental analysis,Fourier-transformed infrared spectroscopy,thermogravimetric analysis,single-crystal X-ray diffraction and theoretical calculations in Gaussian 03.In the crystal structure,the copper(Cu) atoms are tetra-coordinated with four different nitrogen atoms from two different MOPIP ligands,and the Cu atom is one of the five vertexes of the tetrahedron.Presumably due to the steric bulk of the phenyl ligands,compound 1 adopts a slightly distorted tetrahedral configuration.Moreover,it exhibits a zero-dimensional structure with Cu-MOPIP as the building units.Natural Bond Orbital(NBO) analysis was performed by using the NBO method built in Gaussian 03 Program.The calculation results showed a covalent interaction between the coordinated atoms and Cu(Ⅱ) ion. 展开更多
关键词 crystal structure hydrothermal crystal growth compounds natural bond orbital
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Numerical Simulation of the Multicomponent Mass Transfer during Bridgman Growth of CdZnTe Crystal Using Maxwell-Stefan Diffusion Model
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作者 殷利迎 介万奇 +2 位作者 WANG Tao ZHOU Boru YANG Fan 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2017年第2期349-357,共9页
To reveal the complicated mechanism of the multicomponent mass transfer during the growth of ternary compound semiconductors, a numerical model based on Maxwell-Stefan equations was developed to simulate the Bridgman ... To reveal the complicated mechanism of the multicomponent mass transfer during the growth of ternary compound semiconductors, a numerical model based on Maxwell-Stefan equations was developed to simulate the Bridgman growth of CdZnTe crystal. The Maxwell-Stefan diffusion coefficients in the melt were estimated. Distributions of Zn, Cd, and Te were calculated with variable ampoule traveling rate and diffusion coefficients. The experimental results show that Zn in melt near the growth interface decreases and diffuses from the bulk melt to the growth interface. For Cd, the situation is just the opposite. The coupling effects of Zn and Cd diffusions result in an uphill diffusion of Te at the beginning of the growth. Throughout the growth, the concentration of Te in the melt keeps low near the growth interface but high far from the growth interface. Increasing the ampoule traveling rate will aggravate the segregation of Zn and Cd, and hence deteriorate the uniformity of Te. We also find that not only the diffusion coefficients but also the ratios between them have significant influence on the species diffusions. 展开更多
关键词 semiconducting ternary compounds CdZnTe crystal growth computer simulation multicomponent mass transfer
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Crystal Growth, Thermal, Mechanical and Optical Properties of a New Organic Nonlinear Optical Material: Ethyl P-Dimethylamino Benzoate (EDMAB)
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作者 V. Natarajan J. Kalyana Sundar +4 位作者 P. Selvarajan M. Arivanandhan K. Sankaranarayanand S. Natarajan Y. Hayakawa 《Journal of Minerals and Materials Characterization and Engineering》 2011年第1期1-11,共11页
An organic material, namely, ethyl p-dimethylamino benzoate was crystallized for the first time by solution growth technique using pure and mixed solvents. Growth kinetics and morphology changes with solvents were inv... An organic material, namely, ethyl p-dimethylamino benzoate was crystallized for the first time by solution growth technique using pure and mixed solvents. Growth kinetics and morphology changes with solvents were investigated based on solute –solvent interactions of pure and mixed solvents. An appropriate mixed solvent for high quality crystals with well-defined morphology is reported. The absence of solvent molecules and the presence of various functional groups of the grown sample were qualitatively confirmed by FTIR spectroscopic studies. Thermal properties of the grown sample were analyzed by TG and DTA analysis. Mechanical properties of the EDMAB crystal were investigated by micro hardness studies. Moreover, the grown crystal shows high transparency in the visible and near IR regions. The material shows relatively high SHG efficiency than that of KDP. 展开更多
关键词 ORGANIC compounds Crystal growth - OPTICAL properties
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发酵中药和油莎豆复合物对湖羊生长性能及血清抗氧化和免疫指标的影响 被引量:2
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作者 李春鑫 乔宏兴 +2 位作者 王会伟 范明夏 王继雯 《中国畜牧兽医》 CAS CSCD 北大核心 2024年第3期990-998,共9页
【目的】研究发酵中药和油莎豆复合物对湖羊生长性能、血清抗氧化及免疫指标的影响,为新型饲料添加剂的开发提供依据。【方法】选取体重相近、健康状况良好的育肥湖羊40只,随机分为2组:对照组和试验组,每组20只。对照组湖羊饲喂基础饲粮... 【目的】研究发酵中药和油莎豆复合物对湖羊生长性能、血清抗氧化及免疫指标的影响,为新型饲料添加剂的开发提供依据。【方法】选取体重相近、健康状况良好的育肥湖羊40只,随机分为2组:对照组和试验组,每组20只。对照组湖羊饲喂基础饲粮,试验组湖羊在基础饲粮中添加2%复合发酵物,预试期7 d,正试期42 d,在正试期第0、42天分别称重,计算平均日增重;记录日采食量,计算料重比;在试验第1、21和42天颈静脉采血并分离血清,测定湖羊血清中抗氧化指标和免疫指标。【结果】试验组湖羊的终末体重、平均日增重及平均日采食量均显著高于对照组(P<0.05)。与对照组相比,在试验第21天,试验组湖羊血清中过氧化氢酶(CAT)、总抗氧化能力(T-AOC)活性及免疫球蛋白G(IgG)、γ干扰素(INF-γ)含量分别提高了2.75%、3.46%、7.28%和4.55%(P<0.05),丙二醛(MDA)含量降低了12.72%(P<0.05);在试验第42天,CAT、T-AOC活性及IgG、INF-γ含量分别提高了3.17%、3.67%、9.77%和11.91%(P<0.05),MDA含量降低了15.10%(P<0.05)。【结论】在本试验条件下,饲粮中添加2%发酵中药和油莎豆复合物能有效改善湖羊的生长性能,提高抗氧化和免疫机能,可作为一种新型饲料添加剂应用到畜牧生产中。 展开更多
关键词 复合发酵物 湖羊 生长性能 抗氧化 免疫
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Investigation of the Influence of Annealing Temperature on the Morphology and Growth Kinetic of Ni3Sn4 in the Ni-Sn-Solder System 被引量:1
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作者 Mathias Wendt Andreas Plö&beta +3 位作者 l Andreas Weimar Marcus Zenger Klaus Dilger 《Journal of Materials Science and Chemical Engineering》 2016年第2期116-130,共15页
The reaction between high purity nickel (99.999%) and high purity tin (99.999%) was investigated in the temperature range of 232℃ - 330℃, at short periods of annealing (1 - 60 s). The reaction kinetic was studied us... The reaction between high purity nickel (99.999%) and high purity tin (99.999%) was investigated in the temperature range of 232℃ - 330℃, at short periods of annealing (1 - 60 s). The reaction kinetic was studied using cross-sectional scanning electron microscope (SEM) images. The intermetallic compound (IMC) growth was analyzed using the empirical power law and a time dependence in the range of 0.26 to 0.33 was found. The morphology of the IMC was investigated by SEM in the temperature range of 235℃ - 290℃, at annealing periods of 10 s, 30 s, and 60 s by selectively etching away the remaining elementary tin. The exposed IMC displays a change in morphology with increasing annealing temperature, demonstrating that the growth velocity of certain crystallographic orientations of the IMC is strongly influenced by the annealing temperature. Additionally, coarsening and crumbling of the IMC grains is observed, and will be discussed with respect to the responsible mechanisms. 展开更多
关键词 Lead-Free Solders Intermetallic compound Formation Grain growth COARSENING Solid Liquid Inter-Diffusion (SLID) Bonding
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Low contact resistivity between Ni/Au and p-GaN through thin heavily Mg-doped p-GaN and p-InGaN compound contact layer
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作者 李晓静 赵德刚 +6 位作者 江德生 陈平 朱建军 刘宗顺 乐伶聪 杨静 何晓光 《Chinese Physics B》 SCIE EI CAS CSCD 2015年第11期389-392,共4页
Thin heavily Mg-doped InGaN and GaN compound contact layer is used to form Ni/Au Ohmic contact to p-GaN. The growth conditions of the compound contact layer and its effect on the performance of Ni/Au Ohmic contact to ... Thin heavily Mg-doped InGaN and GaN compound contact layer is used to form Ni/Au Ohmic contact to p-GaN. The growth conditions of the compound contact layer and its effect on the performance of Ni/Au Ohmic contact to p-GaN are investigated. It is confirmed that the specific contact resistivity can be lowered nearly two orders by optimizing the growth conditions of compound contact layer. When the flow rate ratio between Mg and Ga gas sources of p++-InGaN layer is 10.6% and the thickness of p++-InGaN layer is 3 nm, the lowest specific contact resistivity of 3.98× 10-5 Ω cm2 is achieved. In addition, the experimental results indicate that the specific contact resistivity can be further lowered to 1.07 × 10-7Ω.cm2 by optimizing the alloying annealing temperature to 520 ℃. 展开更多
关键词 Ohmic contact growth conditions compound contact layer tunneling
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Semi-Automated Method for Multi-Tasking Measurement of Microbial Growth, Capsule, and Biofilm Formation
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作者 Derek T. Kirby Craigory J. Raino +2 位作者 Samuel F. Rabor Jr. Cassandra J. Wasson Balbina J. Plotkin 《Advances in Microbiology》 2012年第4期623-628,共6页
The majority of bacterial infections involve the formation of biofilms. Biofilm formation is nutrient and growth dependent. Determination of the effects of nutrients on exopolysaccharide production and bacterial growt... The majority of bacterial infections involve the formation of biofilms. Biofilm formation is nutrient and growth dependent. Determination of the effects of nutrients on exopolysaccharide production and bacterial growth is labor and time intensive. We tested whether the Bioscreen C (Growth Curves, Inc.) would have utility as a high-throughput tool in the measurement of fundamental phenotype expression, as it relates to growth conditions. Within 48 - 72 hr, reproduceble, statistically significant data on the affects of growth conditions on generation time, capsule production and biofilm formation (maximally for 25 different conditions per 24 hr run cycle;n = 4) were obtained. Although all S. aureus strains produced similar amounts of capsule, sarA– and agr– strains grew significantly slower than parent strain (1.6 fold slower) and produced significantly (p 0.05) less biofilm (~2 fold). E. coli growth rate, biofilm and capsule production in simulated nephropathic urine medium was similar for urine with insulin (20 μU). Addition of insulin to urine medium with proline increased generation time, capsule and biofilm production. Findings from this study show that the Bioscreen C is a rapid, reproducible, and easily manipulated system to concurrently measure bacterial growth, biofilm formation, and capsule production. In addition, there is the potential for further applications of this system by expanding the types of detector dyes used. 展开更多
关键词 Biofilm STAPHYLOCOCCUS AUREUS ESCHERICHIA COLI Quorum-Signaling compounds MENAQUINONE Insulin growth
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Changing the Growth Behavior of a NiSn-Solder Using Gold
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作者 Mathias Wendt Andreas Weimar +1 位作者 Marcus Zenger Klaus Dilger 《Journal of Materials Science and Chemical Engineering》 2016年第4期31-38,共8页
In this investigation, the influence of a thin gold (Au) layer on the growth behavior of the intermetallic compound (IMC) in a Nickel-Tin-Solder (NiSn-Solder) was studied. The reaction kinetics was studied in the temp... In this investigation, the influence of a thin gold (Au) layer on the growth behavior of the intermetallic compound (IMC) in a Nickel-Tin-Solder (NiSn-Solder) was studied. The reaction kinetics was studied in the temperature range of 232℃ to 330℃ using cross-sectional scanning electron microscope (SEM) images. The kinetics of the reaction was determined using the empirical power law and the research showed that the introduction of an Au layer changes the reaction kinetics of the solder significantly. Furthermore, the change in reaction kinetics was accompanied by a change in morphology of the developing grains. The grain morphology of the IMC was studied for samples annealed at 290℃using cross-sectional and top-view samples and compared to Au free NiSn-Solder. 展开更多
关键词 Lead-Free Solder Intermetallic compound Formation Grain growth
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Preparation,Growth Mechanisms and Characterizations of ZnSe Films via the Solvothermal Method
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作者 LI Huan-yong JIE Wan-qi ZHAO Hai-tao 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2006年第B12期91-95,共5页
With diethylamine as a solvent, ZnSe films were formed on the Si substrate directly from zinc and selenium through the modified solvothermal method. The effects of holding temperature, deposition time and substrate su... With diethylamine as a solvent, ZnSe films were formed on the Si substrate directly from zinc and selenium through the modified solvothermal method. The effects of holding temperature, deposition time and substrate surface treatment on the quality and morphologies of the ZnSe films were investigated. The growth mechanism of ZnSe films was proved to be a layer-nucleation growth process, which was tied in with the Stranski-Krastanov (SK) model. ZnSe films were identified by the X-ray diffraction pattern (XRD), the scanning electron microscope (SEM), the X-ray photoelectron spectroscope (XPS) and the photoluminescence (PL) techniques. The results indicate that the modified solvothermal method with diethylamine as a solvent is suitable to prepare high quality ZnSe films. 展开更多
关键词 Ⅱ-Ⅵ compound ZnSe films solvothermal method growth mechanisms
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柠条复配基质对设施茄子生长发育的影响
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作者 刘艳妮 魏恬 +2 位作者 曲继松 张丽娟 朱倩楠 《北方园艺》 CAS 北大核心 2024年第12期34-41,共8页
以设施茄子为试材,将柠条发酵料、草炭、蛭石、珍珠岩按照一定比例配制复配基质,采用不同基质栽培条件下设施茄子生长比较分析法,研究不同基质的理化性质对设施茄子的生长指标、生理指标的影响,筛选最佳的柠条复配基质配比,以期为植物... 以设施茄子为试材,将柠条发酵料、草炭、蛭石、珍珠岩按照一定比例配制复配基质,采用不同基质栽培条件下设施茄子生长比较分析法,研究不同基质的理化性质对设施茄子的生长指标、生理指标的影响,筛选最佳的柠条复配基质配比,以期为植物废弃资源开发提供参考依据。结果表明:当发酵料与蛭石比例为3∶1、2∶2或1∶3时不利于植物的生长,综合表现最差;当发酵料与珍珠岩比例为1∶3或3∶1时,不利于株高、茎粗叶片数的增加,比例为2∶2植物的干物质积累量和抗性较差。当发酵料与草炭的比例为1∶3或3∶1时最有利于茄子株高、茎粗、叶片数、地上和地下部分干鲜质量的积累,茄子的叶绿素和根系活力也较高,抗性为最强。 展开更多
关键词 柠条 复配基质 茄子 生长发育
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复合益生菌对幼犬生长性能及血清免疫指标的影响
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作者 孙攀峰 肖杰 陈海燕 《中国饲料》 北大核心 2024年第12期57-60,共4页
文章旨在研究复合益生菌(Compound Probiotics,CP)对幼犬生长性能及血清免疫指标的影响。试验选取60只10周龄体重相近的泰迪幼犬,随机分为4组,每组3个重复,每个重复5只。各组幼犬分别饲喂基础日粮+0、0.5、1.0、1.5 g/d的复合益生菌干粉... 文章旨在研究复合益生菌(Compound Probiotics,CP)对幼犬生长性能及血清免疫指标的影响。试验选取60只10周龄体重相近的泰迪幼犬,随机分为4组,每组3个重复,每个重复5只。各组幼犬分别饲喂基础日粮+0、0.5、1.0、1.5 g/d的复合益生菌干粉,并记为CP 0组、CP 0.5组、CP 1.0组、CP 1.5组,试验为期4周。结果表明:(1)与CP0组相比,CP 1.0组幼犬的末重、平均日增重显著提高5.00%、12.55%(P<0.05),CP 0.5组、CP 1.0组、CP 1.5组幼犬的腹泻率均显著降低(P<0.05),且CP 1.0组、CP 1.5组幼犬的腹泻率显著低于CP 0.5组(P<0.05)。(2)与CP0组相比,CP 1.0组幼犬血清中IgA含量显著提高(P<0.05),CP 1.5组幼犬血清中IgA、IgG、IgM含量均显著提高(P<0.05)。(3)与CP0组相比,CP 1.5组幼犬血清中TNF-α含量显著降低(P<0.05),CP 1.0组、CP 1.5组幼犬血清中IL-10含量显著升高(P<0.05)。结论:基础日粮添加复合益生菌能促进幼犬生长发育,降低腹泻率,改善血清免疫指标,当复合益生菌的添加水平为1.0 g/d时,幼犬的生长性能最佳;当复合益生菌的添加水平为1.5 g/d时,幼犬的血清免疫指标最佳。 展开更多
关键词 复合益生菌 幼犬 生长性能 血清免疫指标
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