chemical correlation 中文意思是什麼

chemical correlation 解釋
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  • chemical : adj 化學的，化學作用的；應用化學的，用化學方法獲得的。n 〈常 pl 〉化學製品；藥品。 fine chemicals...
  • correlation : n. 相互關系，相關（性）；對比；交互作用；【數學】對射，異射。 correlation index 關聯指數。 correlation mineral 對比礦物。
  1. On the bases of the galaxy evolution theory, we use the therotical chemical evolution model of three zone ( such as halo, thick disk and thin isk ) and multi - phase ( diffuse gas, molecular clouds, stars of both low and high mass, the remnants ). by comparing with the observational constraints, such assurface densities, age - metallicity relation, g - dwarf metallicity distribution in the solar neighbourhood and the correlation between [ a / fe ] and [ fe / h ], supernovae rates, infall rates. the rationality of the model is verified. based on the theory model, we calculate the abundance of neutron capture element

    本文正是在銀河系化學演化的基礎上，利用銀河系的三成分（ threezone ） （即暈、厚盤和薄盤）多相（ multi - phase ） （氣體，分子云，大、小質量恆星以及剩餘物質）的化學演化的理論模型，通過與觀測約束（質量面密度、場星的年齡-金屬豐度關系、太陽附近g矮星金屬含量分佈函數、三成份的特徵量、元素的星系化學演化、超新星的爆炸率、內落速率等）的比較，來檢驗模型的合理性。
  2. Abstract : events contributing to the establishment of statistics the science of data and its chemical branch are epitomized. as the new chemical branch named chemometrics or chemstatistics has been disputed in the circles of chemistry for a long time, reasons for adopting chemstatistics are given, which is defined as the science of gathering or generating, describing, summarizing and interpreting the data concerned to acquire new chemical knowledge or information. the fact that many traditional statistical methods, such as significance tests, analysis of variance, regression and correlation, and some others not usually considered statistical, such as model building, monte carlo method, fourier transformation, artificial nerval networks and pattern recognition, each contains one or more of the five connotations of statistics is expounded. the regular pattern that a chemstatistician grows up is approached. the urgent task is to include chemstatistics in the undergraduate or graduate curriculum of chemistry specialty. the goal of the project is to nurture chemists who know statistics

    文摘:本文追溯了統計學發展、建立中的大事，陳述了它的定義及其化學分支發展、建立的梗概；鑒于化學界對該新興化學分支學科的名稱長期存在爭議，提出了以化學統計學而不以化學計量學為該學科名稱的理由，把化學統計學定義為一個研究有關數據的收集或產生、描述、分析、綜合和解釋，以獲得新化學知識或信息的學科；闡明了許多公認屬于統計學的方法，如顯著性檢驗、方差分析、回歸和相關，以及一些尚未認定屬于統計學的方法，如模型建立、蒙特卡羅方法、傅立葉變換和人工神經網路，都含有統計學5個內涵中的一個或多個；探討了化學統計學家成長的模式，認為當務之急是把化學統計學納入化學專業的教學計劃，以培養懂統計學的化學家。
  3. The imported transparent glaze fired at lower temperature was analysed semi - quantitatively by adopting emission spectroscope. the stripping of lead and cadmium from this transparent glaze fired at lower temperature in ceramic product was determined by atomic absorption spectroscope. the effect of chemical composition on the stripping of lead and cadmium was analysed. upon the author s opinion, the overproof lead stripping from the imported transparent glaze fired at lower temperature can only be settled by adopting lead - free glaze instead of adopting low - lead prescription. the author succeeded in developing an excellent lead - free transparent glaze fired at the lower temperature of 1000 1050. the success is based on an inquiry into the feasibility of using such new agents of fusion as li2o and sro in replacement of pbo ; and on a study of the effects of the contents of sio2 ， al2o3 ， b2o3and other metallic oxides on such performances of glaze as coefficient of linear expansion, fusion temperature and transparency. it is also based on an analysis of coefficient of linear expansion of blank and glaze on an analysis of coefficient of linear expansion of blank and glaze on their correlation ; and on a study of technology for preparing glaze

    採用發射光譜儀對進口低溫透明釉進行半定量分析，並用原子吸收光譜儀測定其陶瓷製品的鉛、鎘的溶出量，分析化學成分對鉛、鎘溶出量的影響.結果表明，進口低溫透明釉採用低鉛配方不能解決鉛溶出量的超標問題，只有採用無鉛釉才能解決.探討用氧化鋰和氧化鍶等新型熔劑完全代替氧化鉛的工藝，研究釉料中氧化硅、氧化鋁、氧化硼和各種金屬氧化物的含量，對釉的線膨脹系數、熔融溫度和透明度等性能的影響.分析坯料、釉料的線膨脹系數及其相互關系和釉料制備的工藝，研製出優質的1000 1050低溫無鉛透明釉
  4. Research of the correlation of chemical composition of heavy rail with its performances

    重軌鋼成分與性能相關關系研究
  5. This paper systemically studied the characteristics of physicochemistry environment of the com belt phaeozem in jilin and analyzed the correlation between corn yields with soil physical and chemical conditions. at the same time, the author studied the soil comprehensive assessement system and regulating and controlling technology in the paper. soil samples came from corn succession cropping phaeozem in the central part of jilin

    本文以吉林省中部農區玉米連作黑土為供試土壤，重點研究了吉林玉米帶黑土剖面構造及理化環境特徵，並在此基礎上，對土壤的理化環境指標與玉米產量進行相關分析，初步提出了吉林玉米帶黑土土壤環境與玉米產量關系的檢索指標體系和土壤調控技術。
  6. The first order nonlinear hyperpolarizabilities in second - harmonic generation process and electro - optical pockels effect are computed. the basis set effects in ab - mitio quantum - chemical computation are mainly studied. the correction to the nonlinear optical properties due to the electronic correlation energy is discussed and the relationship between the first order hyperpolarizabilities and the frequencies of the external electric field is also investigated

    計算了二次諧波振蕩過程和電光pockels效應過程的一階非線性超極化率，研究了電子的相關能對pna分子的非線性光學性質的影響以及pna分子的一階非線性超極化率與外加光電場頻率之間的色散關系，並著重討論了量子化學從頭計算中基矢組的選取對計算結果的影響。
  7. Particle ratios embody the chemical equilibrium driven by inelastic interaction during rapid expansion when the temperature decreases in the colliding system, the measured hadron ratios provide the chemical composition of the fireball at the chemical freeze - out point and access the baryon transporter stopping ) for the initial conditions at early stage of the collisions. in this paper, we study the anti - proton to proton ratio from ig7au + 197 au collisions, analyzing p / p ratio as functions of rapidity, transverse momentum and centrality at ^ / saw = 200gev and the dependence on the center of mass energy of p / p ratio, compared with the experimental results. it shows that the p / p ratio has n ' t obvious dependence on rapidity for mid - rapidity, but shows a slight increase trend with pt increasing in the range of pt < 1gev / c for mini - bias or central collisions, and rqmd shows a more remarkable correlation between p / p ratio and centrality than experiments do at snn = 200gev

    研究表明：對廠在中心快度區沒有明顯的快度依賴性，在越靠近邊緣快度區， p p呈下降趨勢；在對心碰撞或者最小無偏事件中， p p在低橫動量區域隨著橫動量的升高而增大； p隨著碰撞對心度的比實驗結果表現出稍強的隨對心度增大而減小的趨勢，尤其是有再散射ujrqmd模型；在中心快度區， p p隨著碰撞的質心能量的提高而快速的增大，與實驗結果一致；在低能，有末態粒子再散射的d較好的預言了的：但是在mc能量下，有末態粒子在散射的d所預言的p p值比實驗值要小。
  8. Abstract : a method is proposed in order to accelerate the convergence of artifcial neural network ( ann ) modeling of chemical process, in which the principal components analysis is applied in the data processing in training sets. the result shows that the correlation of input variables could be eliminate and the structure of network could be simplified by this method. moreover, the precision of obtained ann model could attain to the desired accuracy

    文摘:達到提出應用主成分分析法對樣本進行預處理，減少網路的輸入因子數，消除輸入因子間的相關性並簡化網路結構，達到提高網路學習速率的目的，得到的人工神經網路模型能達到所要求的精度。
  9. Applying the grey correlation methods, this paper analyzed the correlation of slaking durability and granularity fractal characteristics of red bed weak rock as well as the experimental data of mineral and chemical component

    摘要採用灰色關聯度法對紅層軟巖的粒度分形特徵以及礦物、化學成分試驗數據與其崩解性進行了關聯分析。
  10. Taking the badain jaran desert and its neighboring district as an example, discreteness, principal component and correlation of the chemical constituents of water samples were analyzed for the benefit of data collection and test

    摘要以巴丹吉林沙漠及鄰區為例，基於距離空間基本原理，對水樣化學成分進行了離散性、主成分和相關性分析，指導樣品數據採集和化驗。
  11. Analysis of canonical correlation between weather factor, chemical constitutions, and aroma and flavor of tobacco leaves

    氣象因子與煙葉化學成分及香吃味間的典型相關分析
  12. Adrenal masses : is there linear correlation between unenhanced ct attenuation value and signal intensity loss on opposed - phase chemical shift mr imaging

    值與磁共振化學位移成像反相位信號丟失程度相關性的研究
  13. Be in charge of the physical and chemical analysis and the correlation instrument analysis of all the products of the company ( raw materials and auxiliary materials, intermediate products, the end products, packing material, purification water, drinking water, research products ) mainly

    3主要負責對公司所有產品（原輔料、中間體、成品、包裝材料、純化水、飲用水、研發產品）的理化項目及相關儀器項目進行檢驗。
  14. The physical and chemical properties of the soil were analyzed, including nutrient change and routine index of acidity and alkalinity, in addition, compared them with natural soil and studied their variation and correlation. the results as follows : the soil bulk density of harbin urban vegetation is higher, total porosity and field capacity are small

    對其土壤的理化性質和養分狀況等指標進行分析，並與松花江地區自然黑土進行了對比，研究其變化的趨勢和養分相關性。結果表明：哈爾濱城市綠地土壤容重較大，孔隙度和田間持水量少，有機質缺乏，養分含量較低，相關性差，土壤ph值呈中性，肥力水平低。
  15. Grey correlation entropy about the effect of chemical composition of viscous crude oil on viscosity property

    稠油化學組成對其粘度影響的灰熵分析
  16. Activated carbon ( ac ) is a kind of desulfurizer used widely, and there is a high correlation between its desulfurization capabilities and its porous structure as well as surface chemical properties

    摘要活性炭是一種應用廣泛的脫硫劑，其脫硫性能取決於它的孔隙結構和表面化學性質。
  17. A study of correlation between the physical - chemical properties and molecular molar mass of alkanes

    分子摩爾質量與鏈烷烴物理化學性質的相關性研究
  18. The correlation model between main chemical compositions and sensory qualities of flue - cured tobaccos was constructed by generalized regression neural network ( grnn )

    摘要採用廣義回歸神經網路分別對烤煙的主要化學成分與香氣質、香氣量、雜氣、刺激、餘味、勁頭和煙氣濃度等感官質量進行建模。
  19. The results obtained by the correlation, path and principal component analysis showed that soil urease and alkaline phosphatase activities could be as a comprehensive index of soil fertility, and their enzyme activities are affected by soil chemical properties and other enzymes

    結果表明，土壤脲酶和?性磷酸酶活性可以作為土壤肥力的指標，且酶活性大小受到土壤化學性質和其它酶活性影響。
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