Mac 05 10.2抢先看

<正> 新鲜出炉 几年前,当苹果公司发布MacOS X的时候,总裁Steven P.Jobs认为它有两项优点,必然受到市场的大力追捧:一是Mac OS X基于Unix之上;二是Mac OS X界面如此漂亮,“让人真想咬一口”。 几年过去了,Mac OS X并不如     

Rhapsody上的Mac OS兼容性

为了使用户和开发商很容易地实现过渡,苹果的下一代操作系统(OS)-Rhapsody将包括一个可支持MacOS应用软件和系统功能扩展的兼容环境。 当大部分Mac OS兼容软件都可以在新环境中运行的同时,有些软件     

妙用Windows98的“运行”功能

在Windows 98中,巧妙地应用“开始”菜单中的“运行”程序,可以使电脑更有“人情味”,使你免去许多时候在资源管理器中找来找去的麻烦。如果你在“运行”对话框中输入特定的字符,还会出现意想不到的结果呢,不信,你试     

“替换”新玩法——图片换文字

吉龙利用Word软件编辑了一篇介绍有关Windows画笔的稿，原稿中有很多处“字工具”字样，为了让排出的稿更加直观，他想将“字工具”这四个字用图片代替。虽然他对Word中的。“替换”功能比较熟悉，可还没有体验过用图片替换字的玩法。不过．最后他还是成功地完成了用图片替换字的操作．想知道他是怎样做的吗？呵呵．进来看看你就知道了，很简单呦。     

Photoshop运用小技巧

Photoshop之所以在拥有强大功能的同时依然保持了良好的使用性,很大程度上应该归功于其整齐精练的界面和简单易用的可自定义性(除了它大量的工具和命令).事实上,Pho-toshop中拥有大量令人惊异的"隐藏"功能.无论你用过Photoshop多少年,都会不断发掘出越来越多的东西.基本上没有人知道关于Photoshop的"所有"的东西(可能除ADOBE的软件工程师).     

基于uClinux的数据采集系统的设计与实现

介绍了一种基于uClinux的嵌入式系统在数据采集方面的应用,构建了以微处理器S3C44B0X为控制核心的数据采集系统.该系统可以很好地取代传统的单片机系统,具有数据采集、预处理等功能,并支持远端用户通过Web浏览器的访问与监测.     

新型涂料印花粘合剂HK的研制及其应用

研制新型涂料印花粘合剂ＨＫ,经各项应用试验及性能的检测,该产品具有色牢度好,粘度低,不易堵网、等特点,在实际生产中可较显著地降低加工成本,节省能源,具有推广应用价值。     

Colour properties,stability, and free radical scavenging activity of jambolan (Syzygium cumini) fruit anthocyanins in a beverage model system: Natural and copigmented anthocyanins

The colour and stability properties of jambolan anthocyanins, both natural and copigmented forms, were investigated in beverage model as well as their radical scavenging ability. Natural anthocyanins of jambolan revealed low colour intensity due to glycosylation structure of the anthocyanins as diglucoside. The intermolecular copigmentation of anthocyanins with sinapic acid, caffeic acid, ferulic acid, and rosemary polyphenolic extract could enhance the colour intensity, which was observed through spectrometric parameters, such as hyperchromic effect (ΔA_vis-max) and bathochromic shift (Δλ_vis-max). In addition of sinapic acid, caffeic acid, and rosemary polyphenolics also increased the stability of the anthocyanin colour during exposure to white fluorescent light and storage at refrigeration and room temperatures, whereas on high thermal treatments, this phenomenon was not observed. Furthermore, beverage model coloured with natural or copigmented anthocyanins revealed DPPH radical-scavenging activity. The AEAC values indicated that the beverage models with copigmented anthocyanins had higher scavenging activity than the beverage with natural anthocyanins.     

NaCl diffusion kinetics in dry salting of goat cheese

With the aim of studying diffusion during the dry salting of goat cheese, the experimental profiles of salt and water concentrations were determined in terms of time and distance from the interface. The effective diffusion coefficient was determined using Fick’s Second Law for a semi-infinite model. NaCl was not present at distances greater than 2 cm from the interface after 24 h of salting. The moisture profiles were seen to decrease from the surface farthest from the interface to the zone in contact with the salt. In contrast, salt concentrations were highest at the interface and decreased with distance from this point. The value of the effective diffusion coefficient did not vary significantly with distance from the interface, but did decrease significantly with salting time. Essentially the same phenomenon of salt incorporation was found to occur in dry salting as in brining.     

Piperine reverses high fat diet-induced hepatic steatosis and insulin resistance in mice

This study examined the effect of piperine on hepatic steatosis and insulin resistance induced in mice by feeding a high-fat diet (HFD) for 13 weeks and elucidated potential underlying molecular mechanisms. Administration of piperine (50 mg/kg body weight) to mice with HFD-induced hepatic steatosis resulted in a significant increase in plasma adiponectin levels. Also, elevated plasma concentrations of insulin and glucose and hepatic lipid levels induced by feeding a HFD were reversed in mice when they were administered piperine. However, piperine did not reduce body weight and other biochemical markers to an extent where they became equal to the levels found in the CD-fed mice. Piperine reversed HFD-induced down-regulation of adiponecitn-AMP-activated protein kinase (AMPK) signalling molecules which play an important role in mediating lipogenesis, fatty acid oxidation and insulin signalling in the livers of mice. The expressions of lipogenic target genes were decreased, whereas the expression of carnitine palmitoyltransferase 1 (CPT1) gene involved in fatty acid oxidation was increased in the livers of the Pin50 group. Piperine significantly decreased the phosphorylation of insulin receptor substrate-1 (IRS-1) compared with the HFD-fed mice. Administration of piperine appeared to reverse preexisting HFD-induced hepatic steatosis and insulin resistance, probably by activation of adiponectin-AMPK signalling in mice.