纳米晶体二氧化钛非水体系合成和光催化性能

钛酸丁酯和乙酐在低于100℃非水状态下生成非晶钛氧聚合物，经焙烧得到纳米二氧化钛晶体，焙烧失重46．55％，在314℃～389℃之间失去表面有机基团，389℃～405℃之间转化为锐钛矿型晶体。XRD和TEM研究了晶体颗粒的袁征。用苯胶的光催化降解评价了非水合成的纳米晶体二氧化钛的光催化活性。     

从废旧锂离子电池中回收制备LiAlO2材料

采用高温固相法，自废旧锂离子电池中回收制备LiAlO2，并采用XRD方法表征了LiAlO2的物相成份。结果表明，900℃培烧2h制备的LiCoO2与Al箔按化学计量比n（Li）：n（A1）=4：5混合均匀后，再在800℃培烧2h后制备的LiAlO2的晶形结构较好。     

烤烟新品系DL02选育及特征特性研究

DL02是大理州烟草公司烟叶技术中心种子站于2002年在弥渡县密址镇的红花大金元示范田中选育出的变异株经多年培育而成的烤烟新品系。与当地主栽品种红花大金元相比，DL02的苗期生长势、大田期生长势、生长整齐度、抗病性、产量、产值、上等烟比例、级指、均价、烘烤特性、色素含量及生理抗性指标等11个方面，均优于亲本红花大金元。显现超亲现象。具有更加优良的特性，值得生产中试用。     

Are you too young for the Nobel Prize?

Although age is not supposed to be a criterion for the award of the Nobel Prize, it is commonly believed that it does play a role. Indeed, econometric evidence in this paper also suggests such a role. However, the paper finds that, if there is a preference for older Nobel candidates, this is introduced during the nomination process. The paper actually finds that the Nobel Committee does not favor older nominees and that, if anything, it seems to partially offset the age premium introduced by the nominators.     

碳掺杂量对C-Ce-TiO2光催化活性的影响

以钛酸丁酯、四丁基氢氧化铵、硝酸铈为原料,采用溶胶一凝胶法合成C—Ce—TiO2光催化剂,经XRD、UV—Vis—DRS表征,在9W日光灯照射下光催化降解农药。结果表明：随着碳掺杂量的增加,微晶粒径减小、禁带能隙降低、对农药的光催化活性增大。     

The interplay of cognitive and relational social capital dimensions in university-industry collaboration: Overcoming the experience barrier

The use of university-industry collaboration in the innovation process is viewed as a major driver of firm competitiveness. The organizational dynamics underlying successful external relationships, however, remain poorly understood. Using longitudinal case studies of 15 innovation projects, we examine how firms with varying degrees of experience in collaborating with universities and public research organizations rely on different social capital dimensions to achieve successful collaborations. We find that experienced firms establish external collaborations on the basis of cognitive social capital, but this basis is reinforced by relational social capital over time. Conversely, less experienced firms initially base their university collaborations on relational social capital, which is reinforced by cognitive social capital over time. Based on these findings, we theorize on the interplay of different dimensions of social capital in university-industry collaborations over time. Our study has important implications for the management of collaborative innovation projects. In particular, it provides guidance to enable less experienced firms to develop successful collaborations with university partners.     

Forecasting performance of grey prediction for education expenditure and school enrollment

GM(1,1) and GM(1,1) rolling models derived from grey system theory were estimated using time-series data from projection studies by National Center for Education Statistics (NCES). An out-of-sample forecasting competition between the two grey prediction models and exponential smoothing used by NCES was conducted for education expenditure and school enrollment under the assumption that grey prediction was as promising as NCES's forecasting technique in dealing with univariate time-series data while some other determinants of the variables under examination were excluded. The purpose of this study, therefore, was to verify that the GM(1,1), and GM(1,1) rolling models would provide forecasts that were at least as accurate as the NCES's approach to extrapolating education expenditure and school enrollment. The findings revealed that the forecasting efficiency of GM(1,1) rolling model was superior to exponential smoothing and GM(1,1) model. The results can offer valuable insights and provide a basis for further research in model building for short-term estimation on educational statistics.     

高校无线网络建设的实践——以滁州职业技术学院为例

随着无线网络技术的普及,在有线校园网基础上扩展无线网络已成为组建无线校园网的主流技术之一。简要介绍了IEEE802.11标准协议与无线网络互联设备,阐述无线校园网的实现原则及设计方案,最后结合滁州职业技术学院的实际情况设计了一个无线校园网络的可行方案。     

超临界CO2流体萃取技术对海州常山叶挥发性化学成分研究

采用超临界CO2流体萃取技术(SFE-CO2)提取了中药海州常山叶挥发油,通过气相色谱/质谱联用技术测定了提取物的化学成分.从中鉴定出32种化合物,主要包括2,6-二叔丁基-4-甲基苯酚,十八碳三烯醇、十八碳三烯酸酯、棕榈酸、芳樟醇、β-紫萝兰酮等.初步分析了所含成分的药效.结果显示,海州常山叶挥发油具有一定的药用价值.     

无水乙醇夹带剂超临界CO2萃取荔枝核

以无水乙醇为夹带剂,采用超临界CO2萃取荔枝核,并用气相色谱．质谱联用仪（GC—MS）对荔枝核萃取物的挥发性成分进行了分析．结果表明,以无水乙醇为夹带剂超临界CO2萃取荔枝核的萃取率为5．47％,GC—MS鉴定出32种化合物,主要为甾醇类、萜类、不饱和脂肪酸、棕榈酸、脂肪酸酯、芳香醇,相对质量分数分别为38．8％,26.4％,8．60％,7．54％,8．44％,6．11％．和无夹带剂相比,夹带剂无水乙醇可以提高荔枝核的超临界萃取率．