dfp 中文意思是什麼

The enzyme activity in fermentation liquid could be inhibited by pmsf and dfp. the fermentation liquor also showed good dehairing activity. the alkaline protease ( named dhap, dehairing alkaline protease ) in the fermentation liquid was purified with hydrophobic interaction chromatography, ion exchange and gel filtration

通過cm - sepharosefastflow離子交換層析， deae - sepharosefastflow離子交換層析， sephacryls - 100 ， sephacryls - 200凝膠過濾層析，疏水層析等純化步驟對短小芽孢桿菌發酵液中的堿性蛋白酶進行了純化。

The enzyme activity could be completely inhibited by pmsf and dfp, and partially inhibited by pepstatin a, edta and egta. leupeptin, benzamidine and hydrochloride aprotin had no influence on the dhap activity. ca2 *, mg2 + and na * could slightly increase, but cu2 + and zn2 + slightly inhibited protease activity

此結果表明， dhap為一種絲氨酸蛋白酶，其酶活性的發揮需要某些金屬離子的參與，如na + ， c擴+ ， m擴+等金屬離子能提高dhap的活性，但c了+與z矛十能抑制dhap的部分活性。

1 dfp flat panel display parts and components diffuser plates, polarizing plates drawing processing work automatic dimension measurement device gs series a product optimized for precision dimension measurement in the sheet metal industry work size : a wide variation available t enable measurement of work pieces ranging from 100 x 100mm to 1500 x 1200mm

下面為以1 fpd平板顯示器零件元件散光板偏光板製造商2切削加工行業3精密金屬薄板加工行業為主的能達到微米級精度的加工製造商介紹一款最適合進行「精密尺寸測量」的商品。尺寸自動測量裝置gs系列：變化豐富，可測定從100100mm .到15001200mm的各種尺寸的工件。

In factual engineering, it is invaluable to eliminate the reading errors in some certain degrees by using the relative displacement. based on dfp optimum back analysis in the excavation of underground chamber, the corresponding object function and formulation are derived in this paper

鑒于在實際工程中，採用相對位移可在很大程度上消除觀測資料的量測誤差，具有十分重要的實用價值和意義，文中提出了地下洞室開挖中基於相對位移的dfp優化反分析方法，並推導了相應的目標函數及其計算公式。

Secondly, the article discusses the fundamental theories and methods to optimize seepage coefficient inverse problem. it develops computer program in seepage inverse problem - optimize arithmetic ( dfp method )

2 、探討了滲透系數優化反演分析的基本原理和方法，研製了穩定且精度較高的變尺度（ dfp法）的優化反演程序。

The structure and the thickness and optical constants of each layer determine the reflectance of the thin film system. we made simulation of the determination of layer thickness of thin film system from is spectral reflectivity curve. the selected algorithm includes simulated annealing algorithm, genetic algorithm, conjugate gradient algorithm and dfp algorithm

我們對不同結構的膜系進行了理論模擬，並首次引入全局優化演算法，如遺傳演算法、模擬退火法等，和超線性演算法，如共軛梯度法、變尺度法等，對膜系的光譜特性曲線進行反演，求解出其結構參數。

Both the simplex method and the dfp method are referred to compare the efficiency of the direct search methods with that of the gradient methods. the differential method of stochastic fem is used to calculate the gradient of the objective function hi dfp method. firstly, deterministic fem for seepage is introduced systematically and stochastic fem for seepage is presented

為了對比直接法和梯度法的計算效率，本文採用兩種優化方法對滲透系數的確定性反演問題進行了探討：單純形法和變尺度法，在分析算例的基礎上，筆者就這兩種優化方法的效率和穩定性等方面的問題提出自己的觀點。

In this paper, regularly back analysis methods " computational theories and steps are summarized and viewed, including conjugate gradient method, dfp method, simplex method. their merits and disadvantages are described, too

對常見的各種參數反分析方法共軛梯度法、 dfp法、單純形反分析方法的計算理論、步驟進行了系統的總結和評述，並對各種方法的優缺點分別進行了闡述。