春潮袭来

春天是购置新衣的时候．如果你是BAPE迷的话，那就必定又到了该掏钱的时候了。新款BAPESTA88．换上了蓝、红、白、黄的新配色，比起先前推出的几个鞋款更为抢眼，分别有中帮与低帮两个款式，鞋子内衬采用毛巾质料，完全无须担心脚部的舒适问题。若是最近没有购鞋计划，那就来看看fire camo吧，这次推出的拉链夹克与线衣均为人气之作，比起滑雪夹克有着更多的穿着机会。     

On the shoulders of students? The contribution of PhD students to the advancement of knowledge

Using the participation in peer reviewed publications of all doctoral students in Quebec over the 2000–2007 period, this paper provides the first large scale analysis of their research effort. It shows that PhD students contribute to about a third of the publication output of the province, with doctoral students in the natural and medical sciences being present in a higher proportion of papers published than their colleagues of the social sciences and humanities. Collaboration is an important component of this socialization: disciplines in which student collaboration is higher are also those in which doctoral students are the most involved in peer-reviewed publications. In terms of scientific impact, papers co-signed by doctorate students obtain significantly lower citation rates than other Quebec papers, except in natural sciences and engineering. Finally, this paper shows that involving doctoral students in publications is positively linked with degree completion and ulterior career in research.     

Influence of Defect Orientation on Electrical Insulating Properties of Plasma-Sprayed Alumina Coatings

The influence of the microstructure (pores and cracks) on electric properties of plasma-sprayed alumina coatings was investigated using the so-called Scanning Electron Microscope Mirror Effect (SEMME) technique.Coatings were sprayed with different alumina feedstock powders on various atmospheres using a CAPS (‘Controlled Atmosphere Plasma Spraying’). Microstructures with various amount of porosity and cracks orientation distributions were analysed. Both outer surfaces and cross-sections of alumina coatings have been analysed by SEMME technique using two complementary modes (measurement of absorbed current and mirror methods). Originally developed to study the behaviour of injected electrons and related phenomena, such as trapping ability, detrapping process and relaxation phenomena in bulk insulating materials, the SEMME technique was successfully applied, in this study, to porous coatings. It is proved that cracks orientation modifies both motion and trapping of charges and therefore the dielectric properties of plasma-sprayed alumina coatings.     

“没有必要之物”

本期挑选的几种男装精品对于很多人来说都是值得留意的，虽然并不是每个季节每个时段都可以派上用场，但是看过之后你就会知道它们是多么地重要。     

车袋合一 当SALVATORE FERRAGAMO遇上MASERATI

生命中经常有着不同的交叉点,人与人的相知相遇取决于天时地利人和,而两个著名品牌的交集,也同样要具备以上的条件。这里所说的,是同为意大利世界级名牌的Maserati及Salvatore Ferragamo,携手推出的车尾行李箱旅行皮具系列。     

Evaporation in microchannels: influence of the channel diameter on heat transfer

This paper discusses the effect of diameter on both flow boiling heat transfer and transition from macro to microchannel evaporation. A recently proposed three-zone flow boiling model based on evaporation of elongated bubbles in microchannels is briefly described and used for the present analysis. In the microscale range, the model predicts an increase in the two-phase heat transfer coefficient with a decrease of diameter for low values of vapor quality and a decrease of the heat transfer coefficient for larger values of vapor quality. This behavior is explained by the influence of the liquid film thickness, deposited periodically behind passing liquid slugs.     

九寨沟的“玉带”诺日朗瀑布

天鹅，古称“鹄（hú）”，“燕雀安知鸿鹄之志哉!”比喻英雄壮志。它高贵优雅，矫健机警，在大多数情况下，很难接近一睹芳容。可是在山东荣成国家级天鹅自然保护区，人们爱护天鹅，亲近天鹅，因此每年都有上千只天鹅从11月初到次年3月中到这里越冬。用广角镜就能拍天鹅已经不再是神话。当然，任何镜头在这里都有用武之地。威海市烟墩角不仅可以亲密接触天鹅，海湾日出、日落，惊涛拍岸，可以找到很不错的题材。