按部就班 富勒U79无线套装对码方法

富勒U79无线套装更换新的接收器后发现无法使用,拨打400免费服务热线后了解到,无线键鼠即使是更换同一型号的接收器也需要重新对码才能再次使用。由于这套键鼠宣传时提示采用了智能自动对码技术,可即插即用,因而不少用户出现键鼠无法使用时都会对如何进行对码操作产生疑问,特别     

用手指打高尔夫 Great Wall Z2588 touch体验

打高尔夫球是一项具有特殊魅力的运动,人们在天然优雅的自然的绿色环境中锻炼身体、陶冶情操,更可彰显个人高贵优雅的气质。而今天,Great Wall将高尔夫运动概念与桌面显示器融合在一起,推出支持多点触控操作的Z2588 touch,让用户动动手指即可"潇洒挥杆"——     

多瑙河之梦 主流笔记本平台秀

在32nm制程Arrandale处理器的帮助下,Intel Calpella平台占据了主流笔记本市场大量份额,作为Intel老对手的AMD自然不会甘心放弃笔记本市场,于2010年第二季度推出针对主流笔记本市场的Danube（多瑙河）平台,凭借一贯以来在性价比上的良好口碑也让消费者对其抱有很大期待。今天,就借华硕K52Dr和海尔简爱7G两款笔记本产品的测试,让我们一同看看AMD Danube（多瑙河）和Intel Calpella两个平台在主流笔记本市场的表现……     

简便 智能——NVIDIA Optimus技术深度体验

推开智能切换的大门 无需用户手动设置和等待即可在后台完成显卡切换动作,且不会对用户产生任何干扰,从而解决传统笔记本双显切换所要面对的屏幕闪烁、切换延迟、中断应用程序等问题,这样的优势让NVIDIA Optimus技术显得十分诱人。当然,笔记本想要支持NVIDIA Optimus技术是需要满足一定条件的,具体可参见下表。     

Replica Placement Strategies in Data Grid

Replication is a technique used in Data Grid environments that helps to reduce access latency and network bandwidth utilization. Replication also increases data availability thereby enhancing system reliability. The research addresses the problem of replication in Data Grid environment by investigating a set of highly decentralized dynamic replica placement algorithms. Replica placement algorithms are based on heuristics that consider both network latency and user requests to select the best candidate sites to place replicas. Due to dynamic nature of Grid, the candidate site holds replicas currently may not be the best sites to fetch replicas in subsequent periods. Therefore, a replica maintenance algorithm is proposed to relocate replicas to different sites if the performance metric degrades significantly. The study of our replica placement algorithms is carried out using a model of the EU Data Grid Testbed 1 [Bell et al. Comput. Appl., 17(4), 2003] sites and their associated network geometry. We validate our replica placement algorithms with total file transfer times, the number of local file accesses, and the number of remote file accesses.     

Reduction of disulfide bonds in an amyloidogenic Bence Jones protein leads to formation of "amyloid-like" fibrils in vitro

Motivated by the finding that the amino acid sequence of the Bence Jones protein BJP-DIA was identical to that of the main protein component of the amyloid fibrils obtained from the same patient with AL-amyloidosis, (Klafki, H.-W., Kratzin, H.-D., Pick, A.-I., Eckart, K., Karas, M. & Hilschmann, N. (1992) Biochemistry 31, 3265-3272.), we attempted to create "amyloid-like" fibrils from the Bence Jones protein in vitro, without addition of proteolytic enzymes. Reduction of BJP-DIA, solubilized in PBS, pH 7.4, overnight at 37 degrees C resulted in the formation of a precipitate which had affinity for the dye Congo red. Electron microscopy of negatively stained samples of the reduced protein revealed aggregates of linear unbranched fibrils. SDS-polyacrylamide gel electrophoresis demonstrated that the precipitate consisted almost exclusively of intact light chain molecules. This result makes it possible to deduce a molecular model of these amyloid fibrils generated in vitro.     

Treatment of schizophrenic psychoses with Lyorodin

Forty-four patients suffering from acute and chronic schizophrenic psychoses were used to obtain, by using Lorr's scale (IMPS) and taking the changes in disease state observed within three months as a base, suggestions or pointers as to the proper treatment of disease with fluphenazine (lyorodin) which is a neuroleptically highly potent phenothiazine derivative. Megalomania, grandiose delusions apathetic and depressive syndromes showed marked tendencies toward major improvement. An "antiautistic" effect was observed in chronic patients. The effective dose was between 6 and 12 mg a day. The drug was well tolerated. In the majority of cases it was also necessary for antiparkinsonian drugs to be administered to patients. After twelve months of treatment, slight to major improvements or even freedom from symptoms could be observed in 28 cases (or 64%).     

Atmospheric emission and attenuation in the range 100 to 600 GHz measures from a mountain site

Further measurements of atmospheric emission from a site in the Canary Islands (Izana, âltitude 2.4 km) have been made during the month of August 1980. The measurements were made with a polarising Interferometer and a composite Ge bolometer. An independent measurement of the precipitable water vapour was made using Infrared Hygrometers. The experimental details are described and the spectra obtained are compared with model spectra using the measured precipitable water vapour.     

The prevalence of hepatitis B surface antigen in commercially prepared plasma products

Commercially available lots of plasma derivatives prepared between 1957 and 1975 were tested for hepatitis B surface antigen (HBsAg) by radioimmunoassay. In all, 69 per cent of lots of plasma protein fraction, 40 per cent of factor IX concentrate, 20 per cent of normal serum albumin, 13 per cent of antihemophilic factor, 3 per cent of fibrinogen, and 0.7 per cent of immune serum globulin lots tested were HBsAg-positive. There was great variation in the prevalence of HBsAg-positive lots of each product among the different manufacturers, reflecting not only differences in methods of processing plasma, but also differences in donor populations. Those manufacturers relying upon volunteer donor plasma or placental source material demonstrated lower rates of HBsAg-positive lots of final products than those relying upon commercial donor plasma. There was a marked decrease in the prevalence of positive lots during the period 1971 to 1973, coincident with the onset of routine plasma donor screening for HBsAg. However, current requirements for plasma screening have not resulted in totally HBsAg-free plasma products. Use of more sensitive and more reliable tests for HBsAg will probably reduce contamination of plasma pools with HBsAg to undetectable levels. Despite HBsAg-status, however, the "high-risk" plasma products (fibrinogen, antihemophilic factor, factor IX concentrate) must still be considered capable of transmitting hepatitis and used only with the strictest indications.