isotopic analysis 中文意思是什麼
isotopic analysis
解釋
同位素分析-
The author summarizes the distribution law of gold deposits of fujian in space and time and studies the metallogenic epoch using the method of isotopic geochronology and geologic analysis
總結了金礦的時空分佈規律，採用同位素測年和地質分析相結合的方法研究福建省金礦的成礦年代。 -
Isotopic analysis of uranium by single - standard gas mass - spectrometer method
單標準氣體質譜法鈾同位素分析 -
Being a noble gas, it resists chemical bonding with other elements and is thus easy to purify for isotopic analysis
由於氙是惰性的，不易與其他元素產生化學鍵，因此很容易純化以進行同位素分析。 -
Isotopic tracing analysis of round - axis flow of karst water in maoba syncline
毛壩向斜核部巖溶水繞軸徑流的同位素示蹤分析 -
Tree ring is a kind of natural archives, on which the isotopic analysis is important to study global climate and environmental change. the authors mainly provide a comprehensive introduction to the fractionation models of carbon, hydrogen and oxygen isotope in plants, their research techniques and the extract methods from cellulose. that results show isotopic tracer can record the message of climatic variation and has become a powerful tool for paleoclimate reconstruction and for the modern environment changing research. especially studying on pages, the cellulose isotopic analyses of imbedded old tree ring have become the mainly quantitative means of environmental evolvement. in addition, china is a typical monsoon country, research in tree ring stable isotope seasonal variation can give us a lot of important information on that. up to now, the research techniques and works on tree ring in our country are still in its earlier stage, and remain many limitations. it needs further accumulate basic research materials, intensify regional contrast and intercross studies on relative subjects
尤其是在過去全球變化pages研究中，埋藏古木纖維素中的碳氫氧同位素分析已成為環境演化研究的主要量化手段。另外，對于中國這樣典型的季風氣候國家，開展樹輪穩定同位素隨季節性變化的研究具有重要的意義。我國在樹輪研究方面起步較晚，研究方法和研究內容上也比較簡單，還存在不小差距，既要進一步積累基礎資料，又要做區域對比，加強與相關學科的交叉研究。 -
Standard practice for the ion exchange separation of uranium and plutonium prior to isotopic analysis
同位素分析前鈾和鈈離子交換分離的標準實施規程 -
Standard test method for isotopic abundance analysis of uranium hexafloride by multi - collector, inductively coupled plasma - mass spectrometry
多收集器感應耦合等離子質譜法分析六氟化鈾同位素豐度的標準試驗方法 -
With the corrected parameter files, the results indicate that the isotopic abundance in the sample can be determined within 2 % error using a hpge detector system. artificial neural networks ( ann ) are a class of models based on neural computation and have been applied to the measurement of uranium enrichment. the principles of ann methods used in uranium measurement are presented in this paper and the conditions of analysis proceedings are described
在核保障核查測量中和實物監測中，測量對象往往是規格確定並種類有限的元件或部件，只需要關心測量對象的屬性是否發生了變化，或者對同一種類的放射性樣品的一致性做出判斷，這種要求下使用神經網路方法是比較適宜的，並且神經網路方法是與探測器和探測效率無關的。 -
It ' s a more accurate method in determining the isotopic abundance of uranium. the paper describes the measurement principles that allow accurate measurements to be taken on samples of arbitrary size, shape, and measurement geometry - and of arbitrary physical and chemical composition - through the use of know nuclear decay data ( half - lives and branching intensities ). this method relies on internal gamma - ray peaks from the spectrum under analysis to self - calibrate the unknown spectrum for energy and peak shape
本工作首次分析了pc fram軟體的演算法並使用高純鍺探測器探測歐共體低濃鈾標準樣品，使用pc fram軟體的預設參數並不能得到準確的富集度值，通過大量的實驗，本工作對鈾富集度測量中的關鍵問題進行了初步的研究並給出了本實驗室條件下準確分析鈾富集度的修正參數和條件。 -
Applications of isotopic tracer in analysis of residual sulfonylurea herbicide
同位素示蹤法在磺酰脲類除草劑殘留分析中的應用 -
This paper will discuss project feasibility study, investment estimating, operating costs estimating, selling income and tax, finical analysis of a high technical project - medical isotopic production reactor which was developed by nuclear power institute of china, using nuclear project feasibility study and economic analyses method
本論文將利用現有的核工程項目可行性研究和經濟分析的方法對中國核動力研究設計院近期開發的高科技項目? ?醫用同位素生產堆的項目可行性報告編制、項目投資估算、項目生產成本費用估算、項目銷售收入及稅金估算、項目財務評價指標的計算、項目財務評價的結論等情況進行研究和探討。 -
On the basis of systematic analysis and comparative research on jianchaling and jinchuan nickel sulflde deposit in geology and geochemistry, some conclusions can be drawn as follow : ( 1 ) re - os isotopic geochronology data define an precise 878 ? 6 ma isochon, suggest jianchaling nickel sulflde deposit would form in new proterozoic. the rock - forming process and metal logenesis happened on the whole, this deposit subordinates to magmatic deposit
通過對煎茶嶺和金川鎳礦床地質、地球化學的系統分析與比較研究，取得以下新的認識和進展： （ 1 ） re ? os同位素地質年代學研究表明，煎茶嶺硫化鎳礦床形成於878ma前的新元古代，成礦作用和成巖作用基本上是同時進行的，屬巖漿礦床。 -
Method for the analysis of the organic matters for stable carbon isotopic composition
有機質穩定碳同位素組成分析方法 -
Organic geochemical measurements of geological samples - method for the analysis of the organic matters for stable carbon isotopic composition
地質樣品有機地化測試有機質穩定碳同位素組成分析方法 -
Nuclear energy - chemical separation and purification of uranium and plutonium in nitric acid solutions for isotopic and dilution analysis by solvent chromatography
核能.用溶劑色譜法對同位素和稀釋度分析用的硝酸溶液中鈾和鈈的化學分離和提純 -
Standard test method for isotopic analysis of hydrolyzed uranium hexafluoride and uranyl nitrate solutions by thermal ionization mass spectrometry
用熱電離質譜法進行水解六氟化鈾和硝酸雙氧鈾溶液同位素分析的標準試驗方法 -
Standard test method for isotopic analysis of uranium hexafluoride by single - standard gas source mass spectrometer method
用標準氣體源質譜法進行六氟化鈾的同位分析的標準試驗方法 -
Standard test method for isotopic analysis of uranium hexafluoride by single - standard gas source multiple collector mass spectrometer method
用單支架氣體源多收集器質譜儀法進行六氟化鈾的同位素分析的標準試驗方法 -
An isotopic analysis of the grains has made that fear come true
一項對這些顆粒的同位素分析讓這種擔心成真了。 -
Standard test method for isotopic analysis of uranium hexafluoride by double - standard multi - collector gas mass spectrometer
用雙支架多收集器氣體質譜儀進行六氟化鈾的同位素分析的標準試驗方法
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