无比气魄远大目标打造西安音乐厅——大西北首座国际级音乐厅启用

2009年12月26日谭盾指挥上海爱乐乐团演出他的《奥运序曲》、《卧虎藏龙》和《纸乐》,作为西安音乐厅的开幕节目,千年古都皇城西安,终为中国幅员广大的大西北建成首座国际级水平的音乐厅。但在正式开幕前的双节（国庆、中秋）期间,西安音乐厅已为“大唐不夜城”的开城庆典,邀来中外三大乐团举行了一系列的演出,为此,我专程去了西安四日三夜,亲身体会到西安音乐厅的启用,不仅是两安新的地标式建筑的落成,     

德国古城乐旅：跨年跨国跨时空的歌剧《赵氏孤儿》 （下篇）

在德国中古名城艾尔福特（Erfurt）建成只有六年的艾尔福特剧院（Effnrt Thentre）观赏的原创新歌剧《赵氏孤儿》（Das Waisenkind）．是笔者2009年东奔西走,在欧美和中国内地都看了听了不少演出,印象至为深刻难忘的制作。该制作有关方面亦已争取将之搬演到中国大陆舞台．笔者亦期待能早日有机会在中国的土地上欣赏到此一源自中国历史戏曲故事的现代歌剧,     

印度软件产业的崛起对中国的启示(上)

1997年中国软件市场总销售额达112亿元人民币,但这一市场额在中国整个信息产业中仅占12％,与发达国家平均50—60％水平相距甚远。这表明中国软件产业存在着巨大的发展潜力。 在软件领域,国产软件何时可以与国外软件争雄?国外软件企业相继进入中国市场,中国软件企业将面临新的挑战!     

迷你黑白电视改遥控

市售迷你黑白电视机出于成本考虑,采用一只电位器调台,其缺点是调好的台不能存储,换台时要反复地旋转电位器,这一直是迷你电视的缺憾.如果采用为彩电设计的电视微处理器显然是杀鸡用牛刀.笔者在这里设计了一个用普通单片机控制的电路.为了追求实用、简单,省去了自动搜索功能,只保留最基本、最想要的功能即遥控选台和频道存储.     

Variability of the plasma proteome in healthy people (report 1)

The last decade has seen intense development of proteomic technologies have opened new perspectives for rapid large-scale screening of biological samples in order to find biomarkers of various diseases or conditions. However, in order to adequately evaluate the possibility of using protein as a biomarker, it is necessary to know how much its concentration varies widely in healthy people. This project aims to explore the limits of the concentration of protein components of plasma in healthy people.     

Efficient photogeneration of charge carriers in silicon nanowires with a radial doping gradient

by performing electrodeless time-resolved microwave conductivity measurements, the efficiency of charge carrier generation, their mobility, and the decay kinetics on photoexcitation were studied in arrays of Si nanowires grown by the vapor-liquid-solid mechanism. Large enhancements in the magnitude of the photoconductance and charge carrier lifetime are found depending on the incorporation of impurities during the growth. They are explained by the internal electric field that builds up, due to higher doped sidewalls, as revealed by detailed analysis of the nanowire morphology and chemical composition.     

Assessment of the validity of maturity metrics for predicting the volatile composition of Concord grape juice

Total soluble solids (TSS) are typically used as the sole metric for maturity of Concord grapes. However, the reliability of TSS in predicting the aroma composition of finished juice for grapes sourced from multiple sites has not been investigated. This study sought to determine the validity of TSS in predicting the aroma composition of the juice while also investigating other potentially useful indicators, including pH, titratable acidity (TA), and TSS:TA ratio. Grapes were harvested from 9 sites in the Lake Erie Concord Grape Belt and stratified from north to south and east to west. The key aroma compounds methyl anthranilate ("grapey") and trans-2-hexenal ("herbaceous") were quantified along with several other odorants. It was observed that while TSS was a robust predictor of monomeric anthocyanin content across sites, it was a poor predictor of aroma compounds in the finished juice. Conversely, pH, TA, and TSS:TA ratio were all significantly correlated with methyl anthranilate and trans-2-hexenal concentrations (P < 0.05) in samples equal to or exceeding 15 Brix, the industry minimum for grape maturity. These results indicate that parameters related to acidity are better predictors of aroma composition than TSS, which may aid in efforts to minimize herbaceous off-aromas and optimize the aroma composition of the finished juice.     

美国杜邦公司的防烟系统——Smoke Guard

在中型及高层建筑物的火灾中,一般来说,有75％左右的伤亡及财物损失是由浓烟扩散而引起的。而浓烟的扩散,显然与电梯关系很大;这又与浓烟楼层的电梯门开口处的缝隙有关。 美国杜邦公司发明一种叫“Kopton”