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1.
这款电池充电器的充电能源来自于身后支架上附有的太阳能板,通过吸收太阳能光,它可以为灌入充电口的充电电池补  相似文献   

2.
本文详细介绍了镍镉电池、镍氢电池、锂电池这三种最为常用的充电电池的特点,同时介绍基于单片机控制的智能型充电器的工作原理,并给出了相关电路示意图。  相似文献   

3.
域外科技     
美国Rayovac和日本三洋电机日前就共同开发可快速充电的镍氢充电电池达成了合作意向。此次合作将采用Rayovac开发成功的“Ⅰ-C3系统(in-cell-charge control system)”,争取大容量镍氢充电电池早日投产。 双方声称,将在2004年秋季前后开始销售只需15分钟即可完成充电的五号镍氢充电电池及充电器。另外,两公司还将考虑在应用于电动工具及应急电源等的专用镍氢充电电池领域采用Ⅰ-C3系统。 镍氢充电电池的生产方面将由三洋电机全面负责;销售方面,日本、亚洲的市售市场以及面向数码相机厂商的OEM市场将由三洋电机负责,欧美市场方面则由Rayovac负责。  相似文献   

4.
本文所设计的太阳能充电系统主要由以下几个模块组成:STC89C52主控模块、TP4056充电电路、电压AD采集模块、LCD1602液晶显示模块和太阳能充电电池等组成。此太阳能充电器制作简单,性价比高,性能稳定。  相似文献   

5.
柯子桓  岳思 《科技风》2012,(19):14+17
当今社会交通压力与环境压力愈来愈大,环保型电动汽车在社会经济中的环境优势与经济优势正日渐显现,其巨大的发展空间正吸引越来越多的人们开发和利用。环保型电动汽车所使用的动力电池是其驱动的核心部分,研究和设计环保、安全、高效的充电设施系统是保障环保型电动汽车发展的关键环节。本文就环保型电动汽车充电电池、充电器、充电站功能设计与安全设计进行分析和探讨。  相似文献   

6.
《深圳特区科技》2004,(10):240-240
太阳能充电器,11A型太阳能充电器简介,风力发电机  相似文献   

7.
《中国科技信息》2006,(20):10-10
昭和飞机工业即将上市的电动汽车“eVAN”配备的充电电池使用的是瑞士MESDEA公司生产的钠镍氯化物充电电池,这种电池在欧美被称为“Zebrabattery”,现已配备于近3000辆电动汽车上。  相似文献   

8.
长沙市工商局最近查处了一个所谓充电电池修复机外观设计专利冒充高科技的案件。简单的说就是某人谎称发明了一种可以修复充电电池的高科技装置,而实际上其装置并不能真正修复充电电池,骗子们只是申请了一项外观设计专利。正是利用人们对于外观设计和发明专利之间的模糊认识,骗子们利用授权的外观设计专利堂而皇之的将其装置标志为专利产品,并谎称为高科技产晶。如此笨拙的骗技居然在市场上屡试不爽,大行其道,在不长的时间里蒙骗了不少人。为什么行骗者能利用专利大行其道?毋庸置疑,行骗者将其授权外观设计专利在其装置上堂而皇之的标志为专利无疑混淆了税听,使本来就对专利不甚了解的公众误以为是高科技产品。  相似文献   

9.
减速箱安装     
正一、power Tech减速箱简介台湾Power Tech减速箱是创意制作的主要部件(如图1所示),采用130电机作为动力。电压为3V时,电机转速可达18 000r/min。比赛通常使用3节5号电池(4.5V)作为电源,可以是5号干电池,也可以是5号充电电池。5号充电电池有3种类型:①1.2V的充电电池,主要有1.2V镍氢充电电池、1.2V镍镉可充电电池;②1.5V充电电池,主要有1.5V充电锂电池、1.6V镍锌充  相似文献   

10.
请使用充电电池吧,汽车不用汽油也能跑到480千米/小时。  相似文献   

11.
This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors.  相似文献   

12.
Ajoint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology and his co-workers from Norway, US and Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells, suggesting that China's projected climate warming could decrease the pest's numbers. The study was published in Proceedings of theNational Academy of Sciences on 17 September, 2007.  相似文献   

13.
A computer-mediated group is a complex entity whose members exchange many types of information via multiple means of communication in pursuit of goals specific to their environment. Over time, they coordinate technical features of media with locally enacted use to achieve a viable working arrangement. To explore this complex interaction, a case study is presented of the social networks of interactions and media use among members of a class of computer-supported distance learners. Results show how group structures associated with project teams dominated who communicated with whom, about what, and via which media over the term, and how media came to occupy their own communication niches: Webboard for diffuse class-wide communication; Internet Relay Chat more to named others but still for general communication across the class; and e-mail primarily for intrateam communication. Face-to-face interaction, occurring only during a short on-campus session, appears to have had a catalytic effect on social and emotional exchanges. Results suggest the need to structure exchanges to balance class-wide sharing of ideas with subgroup interactions that facilitate project completion, and to provide media that support these two modes of interaction.  相似文献   

14.
Aresearch group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol--a chemical found in the skins of red grapes and in red wine--can improve the sensitivity of mice to the hormone insulin, according to a report in the October,2007 issue of Cell Metabolism. As insulin resistance is often characterized as the most critical factor contributing to the development of Type 2 diabetes, the findings“provide a potential new therapeutic approach for preventing or treating” both conditions, the researchers said.  相似文献   

15.
Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies.  相似文献   

16.
The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means.  相似文献   

17.
Long-standing conflict between domain name registrants and trademark holders prompted the Internet Corporation for Assigned Names and Numbers (ICANN) to create a global, mandatory arbitration procedure known as the Uniform Dispute Resolution Policy (UDRP). The UDRP has been used in 2166 cases involving 3938 domain names as of 1 November 2000. The policy gives the initiator of a complaint, generally a trademark holder, the right to choose which ICANN-accredited dispute resolution service provider (RSP) will handle the case. During the preparation of the UDRP,some feared that complainant selection would lead to "forum shopping" that might bias the results. This article performs a statistical assessment of the forum-shopping thesis and finds support for it. There are statistically significant differences in the various RSPs' propensity to take away names from defendants; there are also major differences in the number of cases brought to each RSP. RSPs who take away names have the larger share of cases. The study examines other variables that might explain differences in market share, such as price, the plaintiff's nationality, or the time taken to decide a case. It finds that nationality and time also are correlated with market share. The study concludes that shopping for a favorable outcome is an important factor in the UDRP.  相似文献   

18.
Prof. Raymond C.K. Chen, a neuropsychologist with the CAS Institute of Psychology, has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology.  相似文献   

19.
Active biological molecules and functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery, disease diagnosis and therapy, and new nanodevice construction.  相似文献   

20.
<正>In Xishuangbanna,one of China’s most biodiverse regions,landscape has changed dramatically during the past three decades due to the conversion of tropical rainforest to rubber plantations.In steep areas,terraces are often constructed before planting rubber trees,which causes two important changes in the soil:the destabilization of soil in the bench terraces and the increased vulnerability of unvegetated riser faces to erosion.Few studies have documented the nature and intensity of erosion on bench terraces.Prof.LIU Wenjie and his colleagues from the Xishuangbanna Tropical Botanical Garden(XTBG)conducted a study in Menglun County(21°5′39″N,101°15′55″E),Xishuangbanna to evaluate the influence  相似文献   

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