全文获取类型
收费全文 | 149篇 |
免费 | 2篇 |
专业分类
化学 | 143篇 |
晶体学 | 1篇 |
物理学 | 7篇 |
出版年
2015年 | 1篇 |
2014年 | 1篇 |
2013年 | 2篇 |
2012年 | 1篇 |
2011年 | 2篇 |
2010年 | 1篇 |
2009年 | 2篇 |
2008年 | 1篇 |
2007年 | 2篇 |
2006年 | 2篇 |
2005年 | 1篇 |
2004年 | 3篇 |
2003年 | 1篇 |
2002年 | 2篇 |
2001年 | 2篇 |
1999年 | 2篇 |
1998年 | 2篇 |
1997年 | 1篇 |
1986年 | 1篇 |
1983年 | 1篇 |
1981年 | 1篇 |
1980年 | 1篇 |
1979年 | 1篇 |
1978年 | 3篇 |
1977年 | 5篇 |
1976年 | 10篇 |
1975年 | 4篇 |
1974年 | 5篇 |
1973年 | 1篇 |
1972年 | 1篇 |
1970年 | 6篇 |
1969年 | 3篇 |
1968年 | 10篇 |
1967年 | 5篇 |
1966年 | 3篇 |
1965年 | 4篇 |
1964年 | 3篇 |
1963年 | 3篇 |
1962年 | 4篇 |
1961年 | 3篇 |
1959年 | 2篇 |
1958年 | 5篇 |
1957年 | 2篇 |
1956年 | 6篇 |
1955年 | 5篇 |
1954年 | 4篇 |
1953年 | 7篇 |
1952年 | 3篇 |
1951年 | 6篇 |
1949年 | 2篇 |
排序方式: 共有151条查询结果,搜索用时 15 毫秒
21.
Early work on candoluminescence is reviewed and the phenomenon is investigated experimentally for the elements Bi, Mn, Sb and the lanthanides. It is demonstrated that it is feasible to determine bismuth (5-1000mug) by measuring its candoluminescent intensity at 399 nm, using a calcium hydroxide-calcium sulphate matrix and a hydrogen-helium-air flame. 相似文献
22.
The selective-electrode procedure described for determining 0.2-2.5% of nitrogen in coal and coke offers significant advantages over Kjeldahl distillation and titration. The Kjeldahl digest is diluted, neutralized, cooled, diluted to volume, adjusted to a standard temperature and rendered alkaline prior to measurement with an ammonia-selective electrode. Accuracy and precision of 1% relative are demonstrated by comparative analyses of a range of samples. Important experimental aspects discussed include the role as neutralization indicator played by vanadium derived from the catalyst, precision of the mV-meter, the influence of solution temperature and concentration, the repeatability of the readings, and interferences. 相似文献
23.
Graphene Oxide Nanosheets Modified with Single‐Domain Antibodies for Rapid and Efficient Capture of Cells
下载免费PDF全文
![点击此处可从《Chemistry (Weinheim an der Bergstrasse, Germany)》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Dr. Christopher S. Theile Neelkanth M. Bardhan Dr. Priyank V. Kumar Joao N. Duarte Dr. Takeshi Maruyama Ali Rashidfarrokh Dr. Angela M. Belcher Dr. Hidde L. Ploegh 《Chemistry (Weinheim an der Bergstrasse, Germany)》2015,21(48):17178-17183
Peripheral blood can provide valuable information on an individual’s immune status. Cell‐based assays typically target leukocytes and their products. Characterization of leukocytes from whole blood requires their separation from the far more numerous red blood cells. 1 Current methods to classify leukocytes, such as recovery on antibody‐coated beads or fluorescence‐activated cell sorting require long sample preparation times and relatively large sample volumes. 2 A simple method that enables the characterization of cells from a small peripheral whole blood sample could overcome limitations of current analytical techniques. We describe the development of a simple graphene oxide surface coated with single‐domain antibody fragments. This format allows quick and efficient capture of distinct WBC subpopulations from small samples (~30 μL) of whole blood in a geometry that does not require any specialized equipment such as cell sorters or microfluidic devices. 相似文献
24.
Summary All methods for determining sulphate in urine involve precipitation with barium or benzidine. The various direct and indirect procedures used are critically reviewed.
Dedicated to Prof. Hans Lieb on the occasion of his 90th birthday. 相似文献
Zusammenfassung Alle für die Bestimmung von Sulfat im Harn angegebenen Methoden bedienen sich der Fällung mit Barium oder Benzidin. Eine kritische Übersicht über die verschiedenen direkten und indirekten Verfahren wurde angegeben.
Dedicated to Prof. Hans Lieb on the occasion of his 90th birthday. 相似文献
25.
26.
A procedure is described for the determination of metallic iron, nickel and cobalt in reduced ores and oxides. The metallic phases are dissolved in brominemethanol solution, excess of bromine is destroyed by reaction with hydroxylamine hydrochloride and the analysis is completed by atomic absorption spectrophotometry. Solution of oxide phases is not observed if free or combined water is removed from the samples. Results are presented for an ore and standard alloys. 相似文献
27.
The solubility product of cadmium sulphide has been measured in three acidic media by precipitation and dissolution techniques. The values of log K(s0) after correction for complex formation are -27.3 +/- 0.6 in all the media examined. An X-ray and microscopic examination of the precipitates shows an increase in crystallinity on aging, although Ostwald ripening was not observed. 相似文献
28.
29.
30.