نتایج جستجو برای: extractive spectrophotometry

تعداد نتایج: 12437  

2001

Increases in spiny lobster size and abundance have been observed within some marine protected areas (MPAs). To date, the potential economic benefits of these changes have been assumed to derive from the effects of emigration of adult lobster to adjacent fishing grounds and/or increased larval export to downstream nurseries that sustain fisheries. According to economic theory, these effects may ...

2009
B. YILMAZ

In this study, zero-, first-, secondand third-order derivative spectrophotometry methods were developed for the determination of metoprolol in pharmaceutical preparations. In zero order spectrophotometry, absorbance values were measured at 276 nm in zero order spectra of solution of metoprolol in methanol in the range of 240-310 nm. In first derivative spectrophotometry, absorbance values were ...

Journal: :journal of nanostructures 2016
m. r. mohammad shafiee m. kargar m. ghashang

in this work, copper oxide nanoparticles have been synthesized via extractive rosmarinus officinalis leaves by simple and economic co-precipitation method at ambient conditions which it has used (ch3coo)2cu+h2o individually as cu sources. it was found that uniform copper oxide nanoparticles have been successfully produced at various temperature, namely 400, 600, and 800 0c. powder x-ray diffrac...

Journal: :World journal of emergency medicine 2011
Chang-Bin Li Xin-Hua Li Zhen Wang Cheng-Hua Jiang Ai Peng

BACKGROUND Paraquat (PQ) is a world-wide used herbicide and also a type of common poison for suicide and accidental poisoning. Numerous studies have proved that the concentration of serum PQ plays an important role in prognosis. Spectrophotometry, including common spectrophotometry and second-derivative spectrophotometry, is commonly used for PQ detection in primary hospitals. So far, lack of s...

2016
Julie Bossu Jacques Beauchêne Yannick Estevez Christophe Duplais Bruno Clair

Challenging evaluation of tropical forest biodiversity requires the reporting of taxonomic diversity but also the systematic characterization of wood properties in order to discover new promising species for timber industry. Among wood properties, the dimensional stability is regarded as a major technological characteristic to validate whether a wood species is adapted to commercial uses. Cell ...

2014
Trun Kumar Sathya Babu

Automatic summarization is the process of reducing a text Document with a computer program in order to create a summary that retains the most important points of the original document. As The problem of information overload has grown, and as the quantity of data has increased, so has interest in automatic summarization. It is very difficult for human beings to manually summarize large documents...

Journal: :علوم و تکنولوژی پلیمر 0
جواد ترکمن

0

Journal: :Highlights of Astronomy 1974

Journal: :Journal of the Spectroscopical Society of Japan 1965

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