正電位 的英文怎麼說
中文拼音 [zhēngdiànwèi]
正電位
英文
positive potenital-
A slot in the structure of theoretical physics was ready and waiting for the position when anderson discovered it in 1932.
安德森在1932年發現正電子時,在理論物理結構中已經準備好虛位等待正電子。Results the diagnostic accuracy of cut film with conventional ap and lateral views was 80. 5 %, the diagnostic accuracy of cine film with angulated views was 90. 0 % and the diagnostic accuracy of dsa using non - ionic contrast medium with angulated views was 96. 5 %
結果用快速換片心血管造影設備和常規正側位元投照時的兒童先天性心臟病心血管造影診斷符合率為80 . 5 % ,用電影心血管造影設備和軸位元成角投照技術時的造影診斷符合率為90 . 0 % ,採用數字減影心血管造影設備,軸位成角投照技術和非離子型對比劑時的造影診斷符合率為96 . 5 % 。New york ( reuters health ), feb 15 - in infants with congenital hyperinsulinism, positron - emission tomography ( pet ) scans can accurately differentiate between focal and diffuse disease, and pinpoint focal lesions, according to a study published in the february issue of the journal of pediatrics
紐約(路透社健康專欄) , 2 . 15 - - -根據發表在兒科雜志二月刊上的一項研究,對于有先天性高胰島素血癥的嬰兒,正電子發射斷層掃描( pet )可以準確的區分病灶和彌散性疾病,並且精確地找到局灶性損害位置。This influx of positive charges reduces the potential.
這種正電荷的內流導致電位減小。The distributions of current density and potential on the negative plates with the radiational or expanded grid designs are more uniform than those on the positive plate
輻射式和拉網式負極板在化成開始時電流密度和電位的分佈都比正極板上分佈均勻得多。This paper researches on the practical current and potential distributions on the positive and negative plates of automotive batteries in the course of their formation processes by the means of an in situ electrochemical scan, and then studies the influences of the formation and also the additives on the performance of the automotive plates
本文利用電化學掃描方法研究鉛酸蓄電池正負極板在化成過程中電流密度和電位分佈及化成對極板電性能的影響。同時分析了正負極添加劑的性質及其對極板性能的影響。In the hardware design, the paper completes modules ’ design like outside memory, patulous a / d, patulous d / a, rs232 communication, ecan communication, led control, keyboard control, distant control, emulation, reset, logic voltage switch, dsp supply power regulate and ac - dc power circuit, as well as room layout design like anterior panel, back panel etc. and dsp transfers data with peripheral equipments except outside memory using serial ports. besides, the whole circuit is configured in interrupt response. thus, it can meet system demand as well as take full advantage of tms320f2812 ’ s hardware resource. in the software design, the paper finishs programs like the interface programms intercommunicates with people, the distant control program, ad and da modules ’ control program, in addition, the paper select the velocity and acceleration state - feedback algorithm and is written in the program. the software design uses dsp integrate exploiting environment named ccs2. 2 of ti inc. as software instrument, and programs with the combination of c language and assembly language. moreover, in order to maintenance or modify the software expediently and shorten software ’ s exploitation time, the design adopt software modularization technique. finally, some air cylinder experiments are carried out to proved that the pneumatic controller is very practical
在硬體設計中,本文完成了片外存儲器擴展、 a / d擴展、 d / a擴展、 rs232通信介面、 ecan通信總線介面、液晶顯示控制、鍵盤控制、遠程控制、模擬、復位、邏輯電平轉換、 dsp工作電源校正電路和ac - dc電源等模塊設計以及控制器前面板、後面板等的空間布局設計。其中dsp與除外部存儲器的外圍設備之間的數據傳送全部採用串口通信,同時系統電路配置成中斷響應方式,這樣既滿足了系統要求,又充分利用了tms320f2812的硬體資源。在軟體設計中,本文完成了人機界面功能模塊、遠程控制模塊、 ad擴展模塊、 da擴展模塊、速度和加速度狀態反饋的控制演算法的程序設計。It is necessary to control the mechanical stimuli precisely in the studies of cardiac mechano - electrical feedback ( mef ). in the present study a ventricular pressure - clamping system has been developed, which can be applied to isolated - perfused rabbit hearts. controlled by a computer, this system not only can make the left ventricle follow a command defining the same pressure wave as that during a beating cycle under physiological condition, but also deliver mechanical stimuli with a proper waveform to the ventricle at a particular time phase. this system integrates multiple functions, including perfusing, pacing, recording of electrocardiogram and monophasic action potentials, and clamping and measuring of ventricular pressures in isolated - perfused hearts. thus, it is a distinct system for investigating the phenomena and mechanisms of cardiac mef at organ level
在心臟機械電反饋的研究中準確控制機械刺激是非常重要的.本研究室構建了一套適用於離體家兔心臟的心室壓力鉗系統.該系統通過計算機控制壓力鉗,不僅能模擬正常生理條件下左心室的壓力波形,還能在心室活動周期的特定時相、以適當波形對心室施加機械刺激.該系統集心臟灌流與起搏、表面心電圖記錄、單相動作電位記錄、心室壓力鉗制與測定等多種功能於一體,特別適用於器官水平上觀察機械電反饋現象並探討其機制Abstract : it is necessary to control the mechanical stimuli precisely in the studies of cardiac mechano - electrical feedback ( mef ). in the present study a ventricular pressure - clamping system has been developed, which can be applied to isolated - perfused rabbit hearts. controlled by a computer, this system not only can make the left ventricle follow a command defining the same pressure wave as that during a beating cycle under physiological condition, but also deliver mechanical stimuli with a proper waveform to the ventricle at a particular time phase. this system integrates multiple functions, including perfusing, pacing, recording of electrocardiogram and monophasic action potentials, and clamping and measuring of ventricular pressures in isolated - perfused hearts. thus, it is a distinct system for investigating the phenomena and mechanisms of cardiac mef at organ level
文摘:在心臟機械電反饋的研究中準確控制機械刺激是非常重要的.本研究室構建了一套適用於離體家兔心臟的心室壓力鉗系統.該系統通過計算機控制壓力鉗,不僅能模擬正常生理條件下左心室的壓力波形,還能在心室活動周期的特定時相、以適當波形對心室施加機械刺激.該系統集心臟灌流與起搏、表面心電圖記錄、單相動作電位記錄、心室壓力鉗制與測定等多種功能於一體,特別適用於器官水平上觀察機械電反饋現象並探討其機制The as - grown crystals were characterization by cutting and directional, x - ray diffraction, high resolution ohmmeter, ir transmission spectroscopy, visible light absorption spectroscopy, scan electronic microscopy ( sem ) and positron annihilate time technique ( pat ). the ir transmittance of czt single crystals grown with cd - riched is about 53 %, while 23 % with no cd riched
採用解理實驗、 x射線衍射、電學性能測試、紅外透過譜測試、可見光吸收譜測試、 sem蝕坑分析、探測器的試制等分析測試方法,並首次採用正電子湮沒壽命譜分析方法來研究czt單晶體的空位缺陷,綜合表徵了所生長的晶體的質量和性能。The low solubility of calcium zincate produced from the chemical reaction of zinc oxide and calcium hydroxide in alkaline solution can improve the cycling life the zinc electrode, and the discharge capacity will tend to be stable. furthermore, the effects of la2o3 additives on the electrochemical performances of zinc electrodes were investigated. the results shows that the addition of la2o3, in zinc electrode can improve the area of reduction peak and the hydrogen evolution potential which means the cathodic hydrogen evolution reaction can be hindered
氧化鋅與氫氧化鈣在堿性溶液中化學反應生成的難溶於堿的鋅酸鈣可以使鋅電極的循環壽命得到提高,放電容量也趨于平穩,此外還考察了氧化鑭對鋅酸鈣電極電化學性能的影響,結果表明:添加適量氧化鑭能明顯改善鋅電極的電化學性能,使鋅電極的還原峰電位正移,電極反應可逆性得到改善,同時也可抑制鋅電極析氫反應的發生,提高了鋅電極的陽極電流,對陽極反應有一定的活化作用;同時還可以改善鋅電極的放電特性,增加電極的放電容量。Yu m, brown b, edwards. mh. investigation of multifocal visual evoked potential in anisometropic and esotropic amblyopia. invest ophthalmol vis sci, 1998, 29 ( 11 ) : 2033
王澤洪.正常兒童視覺系統發育及弱視發病機制的視覺誘發電位的研究進展.國外醫學眼科學分冊. 1991 , 3 : 168In the first part of this paper, mn ( iii ) / mn ( ii ) couple in h2so4 was firstly applied as the positive couple to this system, i. e. redox flow cell. its chemical, electrochemical properties, redox kinetics and related parameters were characterized and discussed by rotating disc electrode ( rde ), cyclic voltammetry ( cv ), a. c. impedance ( a. c. imp ), chronoamperometry, tafel curve, and galvanostatic charge / discharge techniques. conclusions have been drawn as follows : 1. the electrochemical kinetics of mn ( iii ) / mn ( ii ) redox couple in 6. 3m h2so4 solution were studied by means of rotating disc electrode ( rde ) technique on platinum electrode
本文第一部分首次成功地將酸性介質中的mn ( iii ) / mn ( ii )電對應用於氧化還原液流電池這一新型儲能裝置的正極活性材料,通過旋轉圓盤( rde ) 、循環伏安( cv ) 、交流阻抗( a . c . imp ) 、恆電位階躍、 tafel實驗以及mn ( iii ) / mn ( ii )單電極的恆流充放電實驗,我們得出以下結論: 1 .在旋轉圓盤電極上,不同轉速范圍,不同的極化過電位, mn ( ) / mn ( )體系氧化還原電極過程的控制步驟不同,電荷傳遞、擴散傳質可分別或聯合成為控制步驟。High water cut stage ; formation water resistivity ; spontaneous potential ; electrofiltration potential ; correction
高含水期地層水電阻率自然電位過濾電位校正Curves in actual production, such as hole diameter, bed thickness, mud invasion, shale content, electrofiltration potential, etc. are analyzed. correspondent calibrating methods are proposed
對影響自然電位曲線的各種因素井徑層厚泥漿侵入泥質含量過濾電位等進行了分析,並對其影響因素提出了校正方法。In the face of increasingly fierce domestic and international competition from various brand computer makers of china ' s it industry, founder pc has successfully maintained the second biggest market share in china over the last several years. especially, in the third quarter of 2002, founder pc got the fifth biggest pc market share in pacific and asia for the very first time
在中國it市場,方正電腦雖然面臨國內外眾多知名品牌電腦強有力的競爭,但幾年來一直保持較高的速度健康增長,其國內市場佔有率一直保持在第二位, 2002年第三季度更是首次沖入亞太前五名。In the state of galvanic couple, the couple potential of the bare metal quickly shifts towards positive direction, and to approach the stable natural corrosion potential of aluminum alloys after 40 seconds
耦合狀態下,新鮮金屬的耦合電位正向移動的速率極快,在40秒鐘后已接近於鋁合金穩定的自腐蝕電位。Another function is to send the signal to the d / a board which converts the signal into real control electric current. this current control vwf which control the wind machine to create the wind
單片機把此16進制數化asc碼送顯示,再送給d a板,由d a板的數字電位器轉化成真正的控制電流。Thus the arrow points from high to low potential and in the direction of assumed current flow.
因而箭頭是從高電位指向低電位,並且與假定的電流正方向一致。And it is well known that the non - uniform current and potential distributions on the plate can obviously affect the active mass utilization, especially for the positive plate
而且極板上不均勻的電流和電位分佈會明顯影響活性物質的利用率,尤其是正極板。分享友人