The thesis includes three parts : firstly, previous study and latest advance of molecular motor in biology are outlined, including myosin ' s and kinesin ' s construction and function, the latest advance of molecular motor in constructional biology ; secondly, the latest advance of molecular motor in physics is reviewed, including the general view of brownian motor and two examples of molecular motor, one being related to two kinds of flashing potention energy, the other being related to electronical bipole ; and finally, the model on unidirectional motion of molecular motor is in detail come up with, and especially, the interact ion between two heads is taken into account, followed by the construction of langevin equation and fokker - planck equation involved in the model. by using solutions of fokker - planck equation, unidirectional motion mechanism of molecular motor is analyzed
本文內容包括:首先綜述生物學領域分子馬達研究的最新進展,內容安
排為:肌球蛋白的結構和功能,驅動蛋白的結構和功能,肌球蛋白和驅動蛋白定向運動機制的結構生物學方面的最新進展;其次綜述並分析了當前研究分子馬達定向運動機制的幾種物理模型,內容安
排為:分子馬達運動的基本觀點和建構模型的一般方法,勢壘的兩態漲落誘導的分子馬達運動模型,分子馬達定向運動的
偶極子模型;最後討論雙頭相互作用的分子馬達模型,內容安
排為:先詳細論述模型的構建,再建立langevin方程和fokker - planck方程,接著用差分的方法求解出fokker - planck方程的解,然後分析和研究分子馬達定向運動的機制。
Yes, rendering obsolete popguns, elastic airbladders, games of hazard, catapults. they comprised astronomical kaleidoscopes exhibiting the twelve constellations of the zodiac from aries to pisces, miniature mechanical orreries, arithmetical gelatine lozenges, geometrical to correspond with zoological biscuits, globemap playingballs, historically costumed dolls
就是要把紙槍橡膠浮囊擲骰子游戲和彈弓
排斥出去其中包括展示白羊宮乃至雙魚宮這十二宮星座的天體萬花筒小型機械裝置的太陽系儀算術用菱形果子凍相當于動物餅乾的幾何圖形餅干游戲用地球儀皮球身穿歷史服裝的玩
偶。
Abstract : the maximum tube distribution numbers in tube sheet limited circle for fixed tube sheet heatexchanger have been determinded by used of the superposition method with computer based on c language programming. it is characterized by determination the maximum tube distribution number according to the even number or singular number of center tube distribution. the method is simply and quickly, and can be used for the design and process calculation of heatexchangers
文摘:採用迭加的方法,使用c語言編程在微機上實現管板布管限定圓最大布管數的確定.該方法可根據中心布管數是奇
排列還是
偶排列來確定最大布管數,簡便易行,計算速度快,對換熱器的設計及工藝計算具有實用價值
Wide tabular mineralization can generally be detected more successfully with a pole-dipole or dipole-dipole array.
用單極
偶極或
偶極
偶極
排列一般能比較有效地探測寬的扁平狀礦體。
Nim had learned of the arrangement accidentally and was unsure whether to be grateful, irritated or amused.
尼姆
偶然之中知道了這種安
排,他簡直不知道是應該感激、氣惱還是覺得有趣才好。
In between, was the debut release from " american idol " winner carrie underwood, " some hearts ". mariah carey ' s hit comeback album " the emancipation of mimi, " reissued as a " platinum edition " with bonus tracks, jumped 11 places to no. 4 with sales of 185, 000 copies
上周的榜上冠軍是鄉村歌手肯尼切斯尼的專輯路和收音機,本周下滑兩個榜位
排在第三,本周第二名是「美國
偶像」獲得者卡麗安德伍德的處女專輯心。
Using the new documents obtained from the oracles excavated in the east side of the hua - yuan site, this article attempts to combine it with the scripts found in wu ting oracles bones to delineate the life story of fu hao
摘要本論文應用新出土的殷墟花園莊東地甲骨,對比過去所見的殷王武丁卜辭,
排比出武丁配
偶婦好的一生活動。
An air vent connected to the other side of the pipe is fitted with a puppet so it can be propped inside, looking like just another of baby ' s stuffed toys
管子另一端是小空調
排氣孔,上面可以裝上一隻玩
偶,玩
偶不但固定了管子,還裝點了嬰兒車。
Thus, on a normal friday afternoon, there will be occasional queues.
這樣一來,在正常的星期五下午就會出現
偶然的
排隊現象。
In each event the competitor with the fastest entry time is assigned the center lane, or right of the center
每個項目預賽成績最好的選手,決賽時,被
排在最中間的泳道,如泳道數是
偶數,那麼就
排在中間靠右的泳道。
We knew that this was master s arrangement, for the brother who was responsible for finding the retreat site had stumbled upon the spot while wandering down an unmarked dirt road
當初負責尋找場地的師兄是在無意間走入一條荒僻的泥土路時,才
偶然發現這個好地方,我們知道這是師父無形中的安
排。
To me, the fire was about the drama of neighborhood people throwing a figure of a human onto a furnace fueled by wood
對他而言,或是按照特點方式
排布的分子;對我而言,或是一場當地人們把一個人
偶投入燒木柴火爐中的戲劇表演。
In each event the competitor with the fastest entry time is assigned the center lance, or in pools with the even number of lanes, the lane on the right of the center
每個項目預賽成績最好的選手,決賽時,被
排在最中間的泳道,如泳道數是
偶數,那麼就
排在中間靠右的泳道。
Cloning removes the chance element from the lottery of reproduction
克隆排除了繁殖這種全靠碰運氣的事兒的偶然因素。