共查询到20条相似文献，搜索用时 51 毫秒
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对核科技期刊中有关"系数""因子""比"组合的量名称表达问题作了归纳,并举例分析了处理方法。对规范此类量名称的方法提出了建议。认为统一它们的表达形式对准确传播科技信息很有必要。 相似文献
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在中国知网以“光照强度”为检索词，对2020—2022年发表的300篇生物学论文进行统计，发现单位为lx、μW/cm2和μmol/(m2·s)的不同量却均以光照强度相称，误用比例高达88.67%。通过搜索GB/T 3102—1993《(所有部分)量和单位》、全国名词委官方网站的“术语在线”和百度文库，对光照强度的3种误用表现逐一溯源辨析，可知以lx为单位的量有明确的标准量名称，即“[光]照度”;单位μW/cm2对应的量名称为“辐[射]照度”,若论文中要强调是做光照辐射处理，可加上修饰词“光”以“光辐[射]照度”来表达；以μmol/(m2·s)为单位的量可与标准量“光子照度”对应，由于其多出现在植物光合特性研究的论文中，为体现行业特征，宜以“光合摩尔光子照度”或“摩尔光子照度”来表达。 相似文献
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在石油天然气类期刊中经常会遇到测井曲线图。针对目前测井曲线图对象名称栏中存在的表达形式多样的问题,参照国家标准和行业标准,提出了作者所在编辑部规范对象名称栏编辑加工的方法:采用国家标准规定的量符号及单位表示对象名称;同一曲线道如果有多条曲线,则对象名称从上到下对应各曲线从左到右的顺序排列,并且采用底部对齐的方式;图件下方统一给出各量符号的说明。 相似文献
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依据量和单位的国家标准与规范,结合三元相图的物理含义,分析科技书刊中三元相图表述不规范的问题,给出规范的表达形式。认为三元相图中不应以某组元的化学元素符号或分子式当作其量符号,各边的量含义应为某组元的质量分数或体积分数或摩尔分数,量符号应为w(组元)、w(组元),或φ(组元)、φ(组元),或x(组元)、x(组元),单位常用"%"。 相似文献
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在GB 3 10 2 .893中,浓度和物质的量浓度是同一个量名称的2种称谓,使用中可以互换,其法定单位为mol/m3 或mol/L。这就表明,只有物质的量浓度才可以用浓度替换,其他的量名称都不得称为浓度。然而,在科技书刊中,滥用浓度的现象非常普遍。例如:HCl的浓度为0 .5kg/m3 ;Ca的浓度为0 .2 0 ;H2 的浓度为0 .0 5 % ;O2 的浓度为3×10 18L-3 。这里的4个“浓度”都属于滥用,是错误的,应使用各自规范的量名称。它们的正确表述分别为:HCl的质量浓度为0 .5kg/m3 ,或ρ(HCl) =0 .5kg/m3 ;Ca的质量分数为0 .2 0 ,或w (Ca) =2 0 % ;H2 的体积分数为0 … 相似文献
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问在某刊中见到:“质量比浓度单位质量溶液中所含溶质的质量百分数,符号为%(m/m)。”这种说法正确吗?答不正确。1)没有“质量比浓度”这一量名称。此量规范名称应是“质量分数”或“质量比”,其符号为“w”。2)定义错误。如指某溶质的质量分数,定义应为“某溶质的质量除以溶液质量”。3)单位符号错误。质量分数的单位为“1”,也可用百分数表示,符号为“%”。在“%”后加“(m/m)”属干修饰单位符号,这是国际单位制不允许的。“质量比浓度”正确吗?@郝欣 相似文献
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20世纪80年代以来,维修科学与技术迅速发展,产生了一些新的量.在使用中由于尚无规范化的量符号可供使用,作者和编者一般多照搬英文或英文的中译文,其中许多用法不符合国标[1]要求(参见表1):1)用量名称字母简写或多个字母表示量符号;2)量符号下标使用不规范,一是下标的正斜体不规范,二是下标使用汉语拼音,三是用汉字做下标;3)用多个量符号表示同一量;4)用同一量符号表示多种量等. 相似文献
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坐标图上标值线的表达 总被引：2，自引：2，他引：0
标值线是坐标图的构成要素之一(坐标线上无标值的坐标图除外),对于它的正确表达(即绘制)尚未见有关的标准或规范。故此,造成它的长短、粗细和疏密程度等不一。有的标值线画得太长,其长度是粗线条宽度的好几倍;有的又画得太短,只有一丁点儿,好似一个点。有的标值线画得太粗,其宽度与粗线条一样;有的又画得太细,令人看不分明。有的坐标线上密密麻麻画的全是标值线;有的仅在终点处画了一根;有的干脆不画标值线,只是在坐标线相对应的位置上贴上标值而已。有的坐标线上末尾一根标值线未包容坐标内的线条或坐标点;有的又包容过余。 相似文献
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《Slavic & East European Information Resources》2013,14(1-2):123-143
ABSTRACT The article examines the most important periodicals of ethnic minorities in Poland. After 1989, many ethnic groups (e.g., Germans and Romanies) were allowed to publish journals and newspapers for the first time since the end of World War II. The publications examined show the rich cultural life of the various ethnic groups as well as their current status in Poland. In addition to popular titles, some scholarly publications are also discussed. 相似文献
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Jon C. Giullian 《Slavic & East European Information Resources》2013,14(3):278-284
The author answers a reference question on bibliographic sources for the Ukrainian periodical press 1840–1850. Helpful publications include bibliographies, guides, and library catalogs. These potentially make mention of revolutionary developments in Hungary (such as the Twelve Points paragraph of the Demands of the Hungarian Nation in March 1848, the subsequent April Laws, and Hungary's declaration of independence in April 1949), and elsewhere in the Hapsburg Empire. 相似文献
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Most studies of collection development mask inadequate theoretical underpinnings with facile assumptions and dazzling statistical manipulations. This essay, in moving toward a model for collection development within both specific collections and library systems as a whole, seeks to demonstrate the full range and complexity of relevant factors. An enlarged theoretical grasp should help highlight both the possibilities and the challenges of existing approaches. One result could be a shift toward gaming or simulation techniques as more realistic analytical tools. 相似文献
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Jason D. Phillips 《期刊图书馆员》2013,64(1):82-101
An annotated list is presented describing seventeen periodicals that cover significant aspects of the gay, lesbian, bisexual, and transgender (GLBT) community and their culture in whole or in part, with popular content rather than an academic or research focus. The titles included are a selective and representative sampling. The entry for each periodical includes the following information: periodical title, publisher/editor and address, basic information, publication data, content, Internet information, an abstract/annotation, and evaluative statement 相似文献
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SUMMARY The state of Illinois funded a large scale Ariel project. This is a report of the project's successes and shortcomings. Although widely successful, additional training in the use of sophisticated hardware, primarily Minolta scanners, is needed. Data on sending and receiving is included. 相似文献
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SUMMARY Ariel files are the starting point for electronic delivery of interlibrary loan articles through ILLiad, Virginia Tech's interlibrary loan system. Despite some advantages to electronic delivery of articles to their desktops, a large majority of ILL customers continue to prefer print on paper delivery rather than electronic delivery. This fact has implications for introducing additional electronic services. Correctly choosing what services to impose on library customers, and what services to offer as value-added options, is fundamental to maintaining the credibility of libraries during these times of rapid change. 相似文献
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《Slavic & East European Information Resources》2013,14(2-3):21-29
SUMMARY The authors discuss the development of the Slovak periodical press within its historical context and their expectations for its future. The article covers general characteristics of Slovak magazines and newspapers from World War II to 1989, and their later development since the Velvet Revolution up to the present. It also discusses the Slovak press outside of Slovakia from the late nineteenth century. 相似文献
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《Slavic & East European Information Resources》2013,14(2-3):31-47
SUMMARY There are between fifteen and twenty U.S. libraries that collect publications from Central Asia, defined here as Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan and Uzbekistan. Collection development responsibility for these countries tends to rest with the Slavic selector, the Middle East selector, or both, divided by language. Vendors who can supply this material mostly also supply publications from other countries of the former Soviet Union. The author briefly discusses the history of collecting from this region and the results of a survey conducted in 2004. She presents evidence indicating that the main reason U.S. libraries are not receiving more books from the region is most likely because they are not being published, not because vendors are doing an inadequate job. 相似文献
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Library Journal's 2011 Ebook Penetration and Use in U.S. Libraries Survey testifies to e-books’ increasing popularity in academic libraries. This review tracked literature published from 2005 that focused on academic librarians’ best practices for acquiring, cataloging, maintaining, and promoting e-books at their institutions. Some of these practices include implementing trial accesses, considering institutional requirements, providing an e-book presence in the library catalog, monitoring usage statistics, and utilizing the library Web site for promotional efforts. 相似文献
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Nadia Zavorotna 《Slavic & East European Information Resources》2013,14(1-2):90-96
The author describes the Slavic Humanities Index, a bibliographic database of scholarly and cultural articles on subjects including history; literature; language teaching; linguistics; philosophy; ethnology; performing arts; and cultural, borderland, and regional studies. She discusses its development, its current form and functionality, and plans for the future. 相似文献