輻射變異 的英文怎麼說
中文拼音 [fúshèbiànyì]
輻射變異
英文
radiomutation-
Mutant, a powerful tool of analyzing genetic process, has already been extensively used for research in plant growth, metabolism and signal transduction infrared imaging techniques utilize every part of difference of infrared radiation of objects to obtain the details of the thermal images
而突變體作為剖析復雜生物學過程強有力的工具，已被廣泛用於植物發育、代謝途徑及細胞信號轉導的研究。遠紅外成像技術是利用物體自身各部分對紅外熱輻射的差異把紅外輻射圖像轉換為可視圖像的技術。From mathematical models for inverse scattering in two dimensional inho - mogenous media including variable impedance, all kinds of probable mixed variable impedance boundaries and cracks, from interior and exterior trans - mission problems and radiation condition, ill - posed integral equation and indicator function method are formulated for the diverse of boundary iden - tification. it is shown that the kernel of the integral equation characters the boundary of scatterer, which is determined by solving it by virtual of regularity method, meanwhile, some numerical tests are given. 3
在二維非均勻介質逆散射邊界識別的數學模型（包括一般的非均勻介質，正交各向異性介質，變阻抗介質，各種可能的混合變阻抗邊界問題）下，由內透射問題和外透射問題以及輻射條件，推導了上述介質的邊界識別的積分方程和指示函數方法，由於積分方程的核充分表徵了散射物的邊界，由此說明只要利用正則化方法求解該積分方程，就可以確定散射物的邊界。With compensation of signal ’ s time delay from different radiating element by phase shifters, phased - array antenna can control array beam easily. because there are no mechanical devices for rotating beam, the phased - array antenna system can scan everywhere in beam covered areas in millisecand by stepping the phase shifters. it improves the tracking velocity of antenna towards the object, and becomes the development trends of weapon system antennas
相控陣天線利用移相器補償信號到達輻射單元時間的差異，從而控制波束方向;天線沒有機械旋轉問題，只需改變移相器的設定值，波束便可以在毫秒級內掃描其覆蓋空域內的任何地方，提高了天線對目標的跟蹤速度，是目前武器系統天線的發展方向。In this dissertation, the numerical computation for the acoustic radiation problem ( arp ) is studied deeply and systematically in the theory, method and the application technique, based on analyzing the situation of the home and abroad on the numerical computation for the acoustic radiation problem. the calculation formulas of the boundary element method ( bem ) for the exterior acoustic radiation problem in the full - space and half - space are deduced, based on the wave propagation theorem ; the arising of the non - unique solutions, which is associated with the application of the boundary integral equation ( bie ) in acoustic radiation problem, is analyzed and proofed ; the improved combined helmholtz integral equation formulation ( ichief ) is presented to overcome the non - uniqueness problem more effectively and reliably ; the determination of the singular integral coefficients on various occasions is analyzed ; the properties and treatments of the singular integrals with different orders axe studied ; the computation program of the cubic spline ichief is developed and its ability to overcome the non - uniqueness problem and feasibility to discrete the surface coarsely with the sufficient calculation precision are examined through examples
第二章在聲波動理論基礎上，詳細地推導出對應于無限域和半無限域的外部振動聲輻射問題的邊界積分方程計算公式；根據fredholm積分理論，對利用邊界積分方程計算振動聲輻射問題過程中解的非唯一性的產生進行了分析和證明；改進了chief法以提高其克服解的非唯一性的有效性和可靠性；對不同條件下奇性系數的計算、強奇性積分的收斂性及其在變量替換時與普通積分的差異性、不同階奇性積分的計算、數值求積分等進行了研究；開發了三次樣條改進chief法計算軟體，並通過算例考核了該方法在特徵波數處克服解的非唯一性的有效性和在保證計算精度的前提下實現剖分粗化以提高計算效率的可行性。In the laboratory experiment part, human peripheral blood, cultured cells and icr mice were study objects. the changes of mitotic chromosome numbers were measured by human metaphase chromosome counts and statistic analyzed used x2 - test. the changes of meiotic chromosome numbers were measured by mice one - cell zygote chromosome counts and statistic analyzed usedx2 - test. the effects of low dose ionizing radiation on the expression of topoisomerase ii were measured by immunocytochemistry, western blot and rt - pcr
流行病學結果顯示長期小劑量輻射接觸與染色體不分離呈正相關，為進一步在細胞遺傳學和分子生物學方面研究小劑量電離輻射與染色體不分離關系及其機制，本課題第二部分以外周血、培養細胞、 icr小鼠為研究對象，用外周血染色體計數和單細胞受精卵染色體計數的方法研究小劑量輻射和拓撲異構酶復旦大學2000級博士生學位論文11a抑制劑及其二者的協同效應對有絲分裂和減數分裂染色體不分離的影響，用免疫細胞化學染色、 westernblot 、 rt pcr等方法研究了電離輻射引起拓撲異構酶a表達變化。The expression of topoisomerase ii of cultured cells treated low dose ionizing radiation decreased and then returned as time went. and become outstanding as radiation dose and frequency were added. inhibitor of topoisomerase ii could cause chromosome non - dis juction in mitosis and meiosis. and the co - effect of inhibitor of topoisomerase ii and ion
05 ） ，具有隨照射次數增加而增加的趨勢；小劑量電離輻射可以引起拓撲異構酶a表達變化，隨照射后時間延長先下降后回升，隨照射劑量和次數的增加，變化更加明顯；拓撲異構酶11a抑制劑可引起有絲分裂和減數分裂時染色體的不分離；拓撲異構酶a抑制劑和電高輻射的協同作用使染色體不分離更加明顯。The low and flat coastal plain, the vulnerable muddy coast and the radiate sand ridges without external sediment supply in jiangsu province are extraordinarily sensitive to coastal dynamical changes. faced with the possible sea - level rise in the future, inevitably, the region will be exposed to serious impacts comparatively
江蘇中部低平的濱海平原、脆弱的淤泥質海岸和缺少外來泥沙供給的輻射沙洲對海岸動力變化異常敏感，面對未來可能的海面上升，該區域必將受到較為嚴重的影響。This gradient in orbital periods causes shear : bits of material at slightly different distances from the center of the disk slide past one another [ see box on page 54 ]
這種軌道周期的梯度變化會引起切變：距離圓盤中心遠近稍有差異的物質，會彼此超前或落後（參見第67頁圓盤如何旋轉與輻射） 。The spatial heterogeneity of surface temperature measured by thermal infrared radiometer
紅外輻射計遙測地表溫度空間變異特徵Change in the direction of propagation of radiation determined by change in the velocity of propagation in passing through an optically nonhomogeneous medium, or in passing from one medium to another
當輻射通過光學異性的界面，或從一種媒質進入另一種媒質時，傳播速度的改變而導致的輻射傳播方向的改變。Chemotherapy and radiation can cause cancer cells to mutate and become resistant and difficult to destroy. surgery can also cause cancer cells to spread to other sites
化療和輻射治療可引起癌癥細胞變異，並演變為難以摧毀。外科手術更能造成癌細胞擴散到其他部位。The exo - atmospheric combat enviroment is introduced, including the outer - space ’ s optical signature, the optical and dynamic signature of the potential targets. the research focus is the precessing rv and tumbling decoy ’ s irradiance intensity ’ s periodical changing rule. a double periodical function model is presented to simulate their irradiance functions
根據空間彈道目標的光學與運動學特性，重點研究了進動旋轉的彈頭和翻滾運動的誘餌的光學強度序列信號的周期性變化規律，並採用雙周期性函數來表示該光學強度信號，以反映彈頭和誘餌在運動特性和表面輻射特徵方面的差異。Taking gear case as research object, we studied the sound radiant efficiency of complex box - shape structure under practical stimulation by experiment, mainly observed the difference of sound radiant efficiency between the complex structure under practice stimulation and the known simple structure
以變速箱為對象，對實際激勵條件下箱形結構的聲輻射效率進行了試驗研究，重點考察了這種結構在實際激勵下的聲輻射效率同已知的簡單結構聲輻射效率的異同以及激勵的改變對輻射效率的影響。By using multi - channel observations of olr, hirs - tb12, erb, vis, ssmr and ssm i on the us satellites, it is analyzed that the global general atmospheric circulation features related to the anomaly of cold vortex over northeast china and it s premonitors are also revealed. it is found that there is an effected chain, which consists of sea ice over northern hemisphere, sea surface temperature in the mid - east equatorial pacific, asia monsoon and local budget of earth radiation in northeast china, on the anomaly of northeast cold vortex. the impacts of each factor in the chain are discussed. the results indicate that the applications of multi - channel satellite observations on research of climate change are of significance
利用美國氣象衛星olr ， hirs - tb12 ， erb ， vis ， ssmr和ssm i多通道的觀測資料，分析了東北冷渦異常年的全球大氣環流特徵及其關鍵地區的先兆特徵對于東北冷渦異常，發現了有一個由北半球的海冰，赤道東太平洋的海溫，亞洲的季風以及東北地區地氣系統輻射收支組成的影響鏈存在。由此討論了影響鏈上的各因子對東北冷渦異常的作用。結果表明多通道衛星觀測資料的綜合應用在氣候變化的研究和預測中有著重要的意義。( 5 ) the variation of ml plants of p. tricuspidata and p. quinqeufolia irradiated by - ray was not rich and stable
（ 5 ）射線輻射后，地錦和五葉地錦m1植株的性狀變異不豐富，變異的穩定性差。The other involved the y - ray irradiation on them, the observation on morphologic and physiologic response of ml plants and the selection of variation
同時，對地錦和五葉地錦的不同類型材料進行射線輻射誘變，觀測m1植株的形態和生理反應，篩選變異類型。分享友人