遞降解作用 的英文怎麼說
中文拼音 [dìjiàngjiězuòyòng]
遞降解作用
英文
degradation-
Chemical degradation is very slow so that it becomes more concentrated in successive stages of the food chain.
化學的遞降分解作用十分緩慢，以致它在食物鏈連續各階段中變得更為濃縮。The effort of manganese removal was studied and the kinetics of manganese removal was tried to establish. the factors of dissolved oxygen concentration, fe2 + concentration, ph, p concentration and closing of the filter were studied to evaluate their effort for biological manganese removal, and the correlation of residual manganese and oxidation - reduction potential was also discussed. as the iron content of water was high, experiment results showed that the reaction was zero order, as the iron content of water was low, the reaction was first order. the time needed for the cultivation of biological manganese removal was 60 70 days. the filter operated at the filtration rate of 8 10m / h, silica sand of effective size 0. 95 1. 25mm filled the filter to a depth of 1200mm
試驗結果表明，成熟后濾砂表面濾膜的x射線衍射圖譜與mno _ x ? 5h _ 2o （ x = 1 . 86 ）的x射線衍射圖譜一樣，濾膜成熟后的結構在進水物質不發生變化的情況下不發生變化;合適的碳磷比對生物除錳有明顯的促進作用，試驗條件下的投磷量不會對出水造成二次污染;生物除錳需要亞鐵的參與，亞鐵的存在除了能夠促進微生物分泌胞外酶並刺激其活性外，還通過鐵離子的變價傳遞電子，催化錳離子的氧化反應，從而促進對二價錳的降解。In this thesis, studies are focused on as follows : ( 1 ) based on analyzing the general transfer - matrix, the conception of the generalized double layer soil model is proposed, and the transfer - matrix ( r ) of half - infinite elastic mass is introduce - d to the analytic expressions of stress and settlement under the uniform circular, rectangular and strip vertical loads in multi - layered soil ; ( 2 ) according to the analytic expressions of the additional stress and settlement under unifo - rm circular in multi - layered soil, rectangular and strip vertical loads, the programs are develop - ed to resolve and debugged. the results show that the programs are correct ; ( 3 ) through calculating the coefficient of additional stress on the central axis of uniform circ - ular vertical loads, under the corner point of the uniform rectangular vertical loads, and on the central axis of uniform strip vertical loads, and the settlement on the center of uniform circular vertical loads and uniform rectangular loads in double - layered soil, the characters of stress and settlement are discussed ; ( 4 ) a case, as an example, is studied with different calculation methods, such as traditional theory, fem. the results obtained are compared
本文在已有研究成果的基礎上進一步開展了以下幾方面的研究： （ 1 ）在對層狀地基傳遞矩陣法中的總傳遞矩陣分析的基礎上，提出了廣義雙層地基模型的概念，並把半無限體的傳遞矩陣r引入到多層地基在圓形垂直均布荷載、矩形垂直均布荷載及條形垂直均布荷載作用下附加應力與沉降的解析式中； （ 2 ）根據多層地基在圓形荷載、矩形垂直均布荷載及條形垂直均布荷載作用下附加應力與沉降的解析式，編制了程序，調試通過並驗證了其正確性； （ 3 ）通過對雙層地基圓形垂直均布荷載中心軸線上的附加應力系數和荷載中心沉降，矩形垂直均布荷載角點下的附加應力系數和荷載角點沉降及條形垂直均布荷載中心軸線上的附加應力系數進行的計算，探討了雙層地基中的附加應力與沉降特性； （ 4 ）應用本文的層狀地基體系理論對一個工程實例進行了計算分析，並與傳統的計算方法的計算結果和有限單元方法的計算結果進行了對比分析，結果表明利用層狀地基理論計算更能反映地基中附加應力分佈的實際情況。In the case of uncorrelated noises, it is shown that only the fluctuation of degradation reaction rate can induce a switch process, and the mean first passage time ( mfpt ) between the high concentration state and low concentration one is decreased when the noise intensity of degradation reaction rate is increased
可以看到源於蛋白質基本合成率的噪聲強度不能引起基因狀態的轉變（即基因的開關）而源於降解率噪聲強度則能夠實現這種開關。當進一步研究在降解率波動作用下基因從一個態躍遷到另一個態的平均首通時間（ mfpt ）時可以看到此時隨著這個波動強度的增加， mfpt是單調遞減的。The analytic solutions of isotropic elastic layered soil under axisymmetrical, rectangular and strip loads were derived from the basic equations of isotropic elastic mechanics by means of transfer - matrix method. by the result, can easily calculate the additional stress and settlement in layered soil. but these solutions could not properly assess the errors from the elastomer of the bottom layer in foundation soil
從各向同性彈性力學基本方程出發，利用傳遞矩陣法推導出的多層彈性地基問題在軸對稱荷載、矩形荷載和條形荷載作用下附加應力與沉降的解析解，可以方便地求出層狀地基中的附加應力和沉降，而他們均沒有考慮最下層彈性體計算深度引起的誤差影響。By using some formulae of confluent hyper - geometric function, the results of radial operators on the normalizing radial wave function of a 3 - d isotropic harmonic oscillator are derived, and the ladder operators are given to calculate the matrix elements
摘要利用合流超幾何函數的遞推關系式得到徑向算符對歸一化徑向函數的作用結果，得出其升降算符通項，便於求解矩陣元。Using gyro measurements during periods of thruster firing, with thruster outputs, mass property identification is achieved through recursive least squares algorithms on the basis of the refined dynamics equation. the approach addresses the issue by segmenting the problem into two sub - problems which both allow closed form solution to reduce computation load
該方法利用衛星上的陀螺輸出和推力器控制指令作為演算法的輸入，在修正的衛星姿態動力學模型基礎上，推導了衛星質量特性在線辨識遞推最小二乘演算法，將質心位置和轉動慣量矩陣的辨識解耦以降低辨識演算法的維數，減少計算量。The paper through to analyse the background, meaning and necessity for implement bidding & tender of online architectural design, through to discript and compare with different mode of domestic and international of application for bidding & tender in network, to propose a unique opinion of solution system which is ndbs mode for bidding & tender of online architectural design, the mode is to submit the whole course of bidding & tender of online architectural design from planning for bid, information issue, pre - qualification, call for bid meeting, tender submit, tender evaluation and confirm the solution to sign the contract in internet. the paper through to structure a bidding platform ( bdb. cn ), to analyse the funcation procedure of bidding and tender system of online architectural design, from the sight of bid invitor, bidder and tender evaluated angle, to link them closely. the paper carry on system design to ndbs mode, input and outut, the information and keep them, safety and data stored, the paper combine with online architectural desigh wenzhou huameng building ( railway station road 1 - 2 massif ) as an example of ndbs mode finally, the result of study indicate, bidding and tender of online architectural design is not only feasible technically, the procedure of bidding and tender accord wigh the law, but also it is unanimous in traditional bidding way, this implement the scheme can improve working efficiency greatly, reduce the cost of bidding effictives, make it standard science further, to realize a pualitative leap in the building management level
論文通過對實施網上建築設計招標投標的背景、意義及必要性進行分析，通過對國內外不同模式招標投標網路應用的綜合敘述與比較，提出了具有獨特見解的系統的網上建築設計招標投標解決方案? ? ndbs模式，該模式是對建築設計招標投標全過程從招標準備、信息發布、資格預審、招標會議、標書遞交、評標決標到合同簽訂的網上解決方案，論文從構建網上招標平臺（ bdb . cn ）開始，對建築設計招標投標系統的功能流程進行分析，從招標人、投標人和評標人的角度出發，通過對其在整個招標投標活動流程在網際網路中的無縫連接，使得通過bdb . cn招標平臺，能夠達到建築設計招標投標各參與方的一網打盡。論文還對ndbs模式進行了系統設計，對輸入輸出、安全與數據加密和招標投標資料儲存進行設計，從技術的層面對該系統提出了解決的方案。論文最後還結合溫州華盟大廈工程（車站大道1 - 2 #地塊）的網上建築設計招標投標的實例，對ndbs模式進行了實證，研究結果表明，實施網上建築設計招標投標，不僅在技術上是成熟可行的，在工作流程上是符合法律法規的，與傳統的招標投標方式也是一致的，而且能夠大大提高工作效率，有效降低招標投標成本，使得招標投標能夠更加規范、科學，實現建設管理水平的一個質的飛躍。分享友人