雏鸡左眼视剥夺不同时程后记忆形成过程与脑内Jun样蛋白表达差异的研究

本实验采用一次性味觉厌恶回避学习，研究２日龄雏鸡左眼视剥夺２４小时后的记忆形成过程，并与左眼视剥夺２小时后的记忆形成过程进行比较，同时利用免疫组化技术，观察并比较单眼视剥夺不同时程及单眼学习后Ｊｕｎ样蛋白在雏鸡脑内不同区域（ＨＶ和ＬＰＯ）的表达。结果表明：１．视剥夺左眼２４小时后对雏鸡的短时记忆、中时记忆和长时记忆均无明显影响，但中时记忆保持水平略低于双眼学习条件下的中时记忆保持水平。这与视剥夺２小时后的记忆形成过程有明显不同；２．视剥夺左眼２小时、２４小时可使Ｊｕｎ样蛋白的表达随剥夺时间变长而显著增高；３．视剥夺左眼２小时、２４小时后进行学习，雏鸡脑内分别于学习后１０分钟和７０分钟观察到Ｊｕｎ样蛋白表达的明显增多

雏鸡左眼视剥夺不同时程后记忆形成过程与脑内Jun样蛋白表达差异的研究

本实验采用一次性味觉厌恶回避学习，研究２日龄雏鸡左眼视剥夺２４小时后的记忆形成过程，并与左眼视剥夺２小时后的记忆形成过程进行比较，同时利用免疫组化技术，观察并比较单眼视剥夺不同时程及单眼学习后Ｊｕｎ样蛋白在雏鸡脑内不同区域（ＨＶ和ＬＰＯ）的表达。结果表明：１．视剥夺左眼２４小时后对雏鸡的短时记忆、中时记忆和长时记忆均无明显影响，但中时记忆保持水平略低于双眼学习条件下的中时记忆保持水平。这与视剥夺２小时后的记忆形成过程有明显不同；２．视剥夺左眼２小时、２４小时可使Ｊｕｎ样蛋白的表达随剥夺时间变长而显著增高；３．视剥夺左眼２小时、２４小时后进行学习，雏鸡脑内分别于学习后１０分钟和７０分钟观察到Ｊｕｎ样蛋白表达的明显增多

剥夺左眼和单眼学习与雏鸡脑内Jun样蛋白表达的相关性研究

近年来,大量的研究表明,外部施加的很多因素都可以诱发原癌基因c-Fos、c-Jun蛋白在神经元的表达,因此,被广泛地用作神经元活动的一个标志物。同时Fos和Jun蛋白可以转为细胞核内第三信使诱导靶基因的表达。它对神经元功能的变化特别是长时变化方面具有十分重要的作用。本实验目的是利用Jun蛋白的免疫组化技术,观察剥夺左眼和单眼学习在HV和LPO的Jun样蛋白的表达,并进行比较

剥夺左眼和单眼学习与雏鸡脑内Jun样蛋白表达的相关性研究

近年来,大量的研究表明,外部施加的很多因素都可以诱发原癌基因c-Fos、c-Jun蛋白在神经元的表达,因此,被广泛地用作神经元活动的一个标志物。同时Fos和Jun蛋白可以转为细胞核内第三信使诱导靶基因的表达。它对神经元功能的变化特别是长时变化方面具有十分重要的作用。本实验目的是利用Jun蛋白的免疫组化技术,观察剥夺左眼和单眼学习在HV和LPO的Jun样蛋白的表达,并进行比较

Synthesis and Photoelectric Porperty of C_(60)Pd(Ph_(2)POCH_(2)CH_(2)OPPh_(2))

在惰性气氛中由取代反应合成出富勒烯金属配合物C60Pd(Ph2POCH2CH2OPPh2),采用元素分析、红外光谱、紫外可见光谱、光电子能谱以及X射线粉末衍射等测试技术对产物进行了表征。研究了产物的氧化还原性能及热稳定性能。在光电化学电池中测定了C60Pd(Ph2POCH2CH2OPPh2)在GaAs电极上形成n+n型异质结的光伏效应。结果表明,产物具有优良的光电转化性能,尤其是在I3-/I-介质电对中,光生电压最大达到95 mV;当C60Pd(Ph2POCH2CH2OPPh2)薄膜厚度为1μm时,光伏效应值最大。C_(60) Pd(Ph_(2)POCH_(2)CH_(2)OPPh_(2)) complex was prepared in inert atmosphere via replacement reaction and characterized by mean of elemental analysis,IR,electronic spectra,XPS and XRD methods.The redox properties and thermostability of the title complex were studied,moreover the photovoltaic effect for C_(60)Pd-(Ph_(2)POCH_(2)CH_(2)OPPh_(2)) complex to form n+n heterojunction on a GaAs electrode in photoelectrochemical cell was investigated.The result shows that I~-_(3)/I~(-) is the best redox couple in the photoelectrochemical cell.The photovoltaic property of C_(60)Pd(Ph_(2)POCH_(2)CH_(2)OPPh_(2))-GaAs electrode at 1 μm for thickness of C_(60)Pd-(Ph_(2)POCH_(2)CH_(2)OPPh_(2)) film is the best.福建省自然科学基金(E0410001,E0110002);; 厦门大学校级自选课题基金资助项

SiC对粉碎烧结法制备P型Bi0.5Sb1.5Te3合金热电性能的影响

向粉碎法制备的Bi0.5Sb1.5Te3+5%Te（质量分数）合金粉体中混入不同体积分数的SiC颗粒，利用放电等离子体烧结法制备SiC复合块体材料，探究块体材料组织和热电性能的变化规律。研究发现：随着SiC体积分数的增加，块体材料的取向性弱化，组织细化，载流子浓度增加，迁移率降低；由于取向性弱化及组织细化，加强了声子散射，降低了晶格热导率。由于SiC复合块体材料的电学性能恶化，块体材料的无量纲热电优值（ZT）并未获得显著的提升；当SiC体积分数为0.40%时，SiC复合块体材料在322 K时具有最优的无量纲热电优值（ZT=～0.81）

JUNO Sensitivity on Proton Decay p→νˉK+p\to \bar\nu K^+ Searches

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in $p\to \bar\nu K^+$ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar\nu K^+$ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is $9.6 \times 10^{33}$ years, competitive with the current best limits on the proton lifetime in this channel

JUNO sensitivity on proton decay p → ν K + searches*

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this study, the potential of searching for proton decay in the $p\to \bar{\nu} K^+$ mode with JUNO is investigated. The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits suppression of the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar{\nu} K^+$ is 36.9% ± 4.9% with a background level of $0.2\pm 0.05({\rm syst})\pm$$0.2({\rm stat})$ events after 10 years of data collection. The estimated sensitivity based on 200 kton-years of exposure is $9.6 \times 10^{33}$ years, which is competitive with the current best limits on the proton lifetime in this channel and complements the use of different detection technologies