離解速率 的英文怎麼說
中文拼音 [líjiěsùlǜ]
離解速率
英文
dissociation rate-
Steric effects in rate constants for bimolecular dissociation
離解反應速率常數中的方位因素It is generally impossible to obtain the analytic optimal guidance law for complex nonlinear guidance systems of homing missiles, and the open loop optimal guidance law is often obtained by numerical methods, which can not be used directly in practice. the neural networks are trained off - line using the optimal trajectory of the missile produced by the numerical open loop optimal guidance law, and then, the converged neural networks are used on - line as the feedback optimal guidance law in real - time. the research shows that different selections of the neural networks inputs, such as the system state variables or the rate of los ( line of sight ), may have great effect on the performances of the guidance systems for homing missiles. the robustness for several guidance laws is investigated by simulations, and the modular neural networks architectures are used to increase the approximating and generalizing abilities in the large state space. some useful conclusions are obtained by simulation results
對于復雜的非線性導彈制導系統,很難求得其解析的最優制導律,只能求得開環的數字解,不能適用於具有時變不確定性的導彈制導系統.利用神經網路的學習和推廣能力,對開環的數字最優制導律進行離線的學習,作為閉環的神經最優制導律在線應用.研究分別選擇系統狀態變量和視線角速率等不同的神經網路輸入對制導系統性能的影響,以及各種制導律的魯棒性問題,並採用模塊化神經網路結構提高神經網路的學習和推廣能力,模擬結果得到一些有益的結論In chapter two, the basic principles of rempi technique are introduced including the resonance enhanced effect, the selection rule, the mechanism of photoionization and photodissociation, rempi rate equation and the property of rydberg state
第二章介紹了rempi技術的基本原理,包括多光子共振躍遷的選擇定則、電子態的光解離機理、描述rempi過程的速率方程和分子rydberg態的性質。Shortwave channel is time varying transmission channel. it has dispersion in frequency and time domains. this characteristics hinds the data transmi - ssion at high speed and the correction of received data. in this dissertation i have analyzed the statistic characteristic of shortwa - ve channel, established the model of shortwave channel and simulated the rayl eigh fading distribution. the technology of spreading spetrum has been proved that it has the capability for anti - multipath and discerning multipath
在短波通信中,由於通道的時間色散和頻率色散,引起多徑展寬和多徑衰落,前者限制了數據的傳輸速率,後者造成短波數據通信中出現突發錯誤,為了解決多徑效應對短波通信的影響,本文所做工作如下:首先詳細分析了短波通道的統計特性,建立其數學模型;其次分析了擴頻通信的特點,從理論上證明擴頻技術不僅具有抗多徑干擾能力,而且具有分離多徑的能力;介紹了傳統的rake分集合併技術的特點。In this study a microbial system for biphenyl biodegradation is set up in order to investigate the effects of surfactants on biodegradation of hydrophobic organic compounds. four strains which can grow on biphenyl as the sole carbon and energy sources are selected out, in which alcaligenes eutrophus dj1 and pseudomonas sms02 are chosen as degradation strains. after studing the bioavailability of three nonionic surfactants ( op - 10, tween - 80, and triton x - 100 ), they are added into the biodegradation system of biphenyl
為了考察表面活性劑對疏水性有機污染物生物降解的影響,本論文選擇聯苯作為模擬研究體系,篩選、馴化得到四株可利用聯苯作為碳源生長的菌株;考察了聯苯降解菌株對三種非離子表面活性劑op - 10 、 tween - 80 、 tritonx - 100的生物可利用性;用高效液相色譜法測定了非離子表面活性劑對聯苯的增溶曲線;較系統地研究了加入非離子表面活性劑對聯苯生物降解速率的影響。By film thickness measured, fourier transformed infrared spectrometer ( ftir ) analysis, x - ray photoelectron spectroscopy ( xps ) analysis and relative irradiance measurement, the effect of microwave input powers on deposition rates, f / c ratios, bonding configurations of ct - c : f films and the radicals in plasma originating from source gases dissociation is analyzed
由於微波功率的改變會導致等離子體中電子溫度和等離子體密度發生變化,從而造成不同的源氣體分解過程,結果微波功率的升高導致了薄膜沉積速率的提高、 f / c比的降低,同時也導致薄膜中cf和cf _ 3基團密度的降低,而保持cf _ 2基團密度接近常數。Now the ion conductivity of gel polymer electrolyte ( gpe ) can reach the magnitude of 10 - 3s / cm, which can satisfy the practical request. however, it is still lower than that of liquid electrolyte ( 10 - 2 s / cm ), which causes the fall of high rate discharge and low temperature performance of lithium battery
目前凝膠聚合物電解質( gpe )的室溫離子電導率可達10 ~ ( - 3 ) s cm數量級,已經能基本滿足應用的要求,但相比液態電解液的電導率( 10 ~ ( - 2 ) s cm ) , gpe的電導率仍然偏低,使得凝膠聚合物鋰離子電池的高充放電速率和低溫性能都大大的降低。Main content in simulation is the spatio - temporal evolution of the set of descriptive variables characterizing tectonic mineralization state under coupling of various processes as following : ( 1 ) variables related to forming and property of ore - forming fluid, such as dissolution rate of minerals ( include metal minerals ) in rock, concentration and saturation of aqueous species in fluid, temperature, pressure, and ionic strength etc. ; ( 2 ) variables related to structural deformation and fluid flow, such as stress, deformation rate, fracture network, porosity, fracture permeability ; ( 3 ) variables related to precipitation and mineralization, such as nucleation rate of gangue and metal minerals, accumulation precipitation of various minerals, etc. ; ( 4 ) spatio - temporal coupling relation of various variables above, such as the coupling relationship between spatio - temporal evolution of fracture permeability and flow and focus of fluid and ore - forming
模擬的主要內容是在各種過程耦合作用下,以下描述構造成礦體系的主要變量的時空演化:與成礦流體的形成和性質有關的變量,如地層中礦物(包括成礦物質)的溶解速率、流體中各組分的濃度與飽和度、流體溫度、壓力、離子強度等;與構造變形和流體運移有關的各變量,如應力與變形速率、巖石孔隙度、構造(斷裂)滲透率等;與沉澱成礦有關的變量,如礦物(金屬礦物和脈石礦物)的成核速率、各礦物的沉澱量等;上述各有關變量間的時空耦合關系,如斷裂滲透率時空演化與流體流動、匯聚和成礦的耦合關系等。8 - 1. 2g / min, and collection efficiency achieve 8 - 10 % under these parameters. through the study on the dispersion process of the nanoparticle tio2 in water, the author finds out that whisk time, dispersant types, dispersant concentration, dispersing time, ph value, temperature and electrolyte concentration have significant influence on dispersing effects. through contrastive and orthogonal experiments, the author obtains that composite dispersants have better results than single dispersants
研究表明,液料等離子噴塗制備的納米tio :顆粒平均粒徑為10 ~ 50nln ,其晶型以銳欽礦為主,且隨著電弧功率的增大,銳欽礦含量減少;在本次實驗工藝參數下,收集速率為0 . 8一1 . 29 / min ,收集效率為8一10 % o通過對納米ti02顆粒在水介質中的分散性研究,發現機械攪拌時間、分散劑種類及濃度、分散時間、 ph值、溶液溫度和電解質濃度對納米tio :顆粒的分散穩定性有很大的影響。The contents of this research include building the hardware system and developing the software system. the key problem to solve is how to transmit high quality images by a low bit network streaming. hardware system for image sampling is mainly configured by purchasing equipments, which requires the time - consumption of single frame under millisecond, the producer of the image sample card providing sdk and the sampling card working stably and unfailingly for long time
離子探針樣品圖像處理系統要解決的三個問題: 1 .快速、有效的獲取離子探針樣品圖像; 2 .對獲取的樣品圖像進行處理,使它適合低速率網路環境下的圖像傳輸; 3 .在滿足客戶要求的情況下使傳輸的圖像數據量盡可能的小。Because of the advantages pf no range blind area, high range resolution and low signal power, recently lfmcw radars attracted more and more attention. the theories, key technologies and application develop rapidly
線性調頻連續波雷達由於具有無距離盲區、高距離解析度、低發射功率等方面的優點,近年來受到廣泛關注,其理論、關鍵技術和應用得到迅速發展。6 ), the process that h20 is adsorbed on the electrode surface and the hydroxyl group is formed to oxidize the co may be the rate - determining step ; in the region iil ( logi > l. 6 ), all of the tafel curves show a curvature until the current densities reach the peak value, indicative of a possible limiting current. the effect of rare earth elements on methanol electro - oxidation has not been reported in literatures
在低極化區( logi 1 . 3 ) ,甲醇發生脫氫反應並形成反應中間體,其中co成為未被氧化的毒物,此過程成為速率限制步驟;在更高的極化區( 1 . 3 logi 1 . 6 ) , h _ 2o吸附在電極表面並解離生成[ oh ] ,促進了co的氧化,此為此階段速率控制步驟:在第3個極化區( 10gi 1 . 6 ) , tafel曲線發生彎曲,電流密度也最終達到峰值。It is indicated by quantum chemistry calculation that dissociation energy of ti, c and si is 108kj / mol, 499. 7 kj / mol and 626. 1 kj / mol, respectively, coincided well with the experimental ones found in literatures
量子化學計算表明其離解能分別為108kj mol 、 499 . 7kj mol和626 . 1kj mol ,與文獻報道的試驗值吻合。離解能數據及速率常數的計算均證明ti的離解較為容易。The redox of v ( ) / v ( ), v ( ) / v ( ) couple on the graphite displayed one electron quasi - reversibility. it is proved that trace in3 +, sb3 + can inhibit cathodic hydrogen evolution during the charge process by increasing the hydro - gen overvoltage in addition that sb3 + is a stabilizing / kinetic enhancing ion. during the charge / discharge process, cross - mix and self - discharge rarely happened. the maximal energy density of the lab - level vanadium battery is 21 wh / kg. the capacity efficiency of the lab - level vanadium battery is as high as 94. 7 %
釩電池充電末期,會發生水的電解反應,痕量銦離子的加入提高了析氫過電位,抑制了充電過程中負極氫氣的析出;銻離子的加入不僅可以抑制氫氣的析出,還提高了正極反應速率,增強了正極表面的穩定性。實驗中得到的最高質量比能量為21wh / kg ,充放電過程中僅有極少的交叉混合和自放電發生,自製釩電池的容量效率可高達94 . 7 %In this paper, we mainly study the global boundedness and infinity blow - up of solutions for a separate variable weakly coupled class of nonlinear reaction - diffusion system. the condition of global existence and infinity blow - up and blow - up rate are gained. in the introduction, we give a discussion about the background and general situation to the reaction - diffusion system
本篇文章主要討論了一類反應項具有分離變量形式的弱耦合非線性擴散方程組解的整體有界和有限爆破性質,給出了整體存在和有限爆破條件並得到了有限爆破速率估計。Non - oscillatory and non - free - parameters dissipative ( nnd ) finite difference scheme ( a total variation diminishing scheme ) with second order accuracy was adopted to solve the fluid dynamic equations, a finite rate chemical reaction model was developed to calculate ingredient producing rate, and an adi over relaxation iteration technique was used to solve the electromagnetic discretized equations
採用二階精度nnd格式求解流體力學方程組,採用有限速率化學反應模型計算組分生成率,採用交替方向隱式( adi )超鬆弛迭代法求解電磁場離散方程。Because of the advantages of no range blind area, high range resolution, low signal power and simple structure, lfmcw ( linear frequency modulation continuous wave ) radar attracted more and more attention recently
線性調頻連續波( lfmcw )雷達是一種通過對連續波進行頻率調制來獲得距離與速度信息的雷達體制系統。由於其具有無距離盲區、高距離解析度、低發射功率、結構簡單,便於集成化等優點,適合用於液位測量系統。The main work is given as follows : the stepped - frequency waveform synthesizing the wideband signal, the synthetic range profile ( srp ) by ifft, the range resolution of stepped - frequency waveform, the effect of the radial velocity on the srp, the radial velocity compensation, ambiguity function, waveform design and stepped frequency sar imaging and so on
包括:頻率步進波形合成超寬帶信號分析, ifft方法獲得目標一維距離像與距離解析度分析,徑向速度對目標距離像的影響、速度補償、頻率步進信號的模糊函數分析,以及頻率步進波形照射下的合成孔徑雷達成像、波形設計與系統設計。2. considering the energy level structure and the spectrum characteristics of yb3 + ion, we deduce the relationships between laser performances of yb3 + - doped double clad fiber laser and parameters of laser cavity from the steady state rate equations with a new model
2 .討論了yb3 +離子的能級結構和光譜特性,並從穩態速率方程,結合諧振腔結構特點採用ido kelson和amos hardy的模型,給出了雙包層光纖激光器的輸出特性與激光器諧振腔結構參數的關系準解析表達式。Digital image transfer using highly speed serial technique can over come some disadvantages of parallel transfer technique such as : short distance, highly cost. complex software and hardware, difficult maintenance etc, and also resolved the bottleneck question of traditional serial transfer mode
利用高速串列技術進行數字圖像傳輸克服了以往并行傳輸方式距離短、易受干擾、成本高、軟硬體復雜和可維護性差等缺點,也解決了傳統串列傳輸方式通信速率低的瓶頸問題。分享友人