裂變輻射 的英文怎麼說
中文拼音 [lièbiànfúshè]
裂變輻射
英文
fission irradiation-
Though adopting the - coordinate transformation in the control equations and mode - splitting technique, the external mode ( surface gravity waves ) is solved by the improved double - sweep - implicit finite difference method ; the internal mode ( internal gravity waves ) untilizes the eulerian - lagrangian method, which improves the implicit - difference scheme for the vertical direction. the newly developed 3d numerical tidal model with implicit scheme has been successfully applied in the radial sandbanks area
基於過程分裂法及垂向坐標伸縮變換,外模式採用改進型雙步全隱有限差分dsi法,內模式採用歐拉?拉格朗日公式,改進了三維垂向隱式格式,成功地建立了南黃海輻射狀沙脊群海域三維全隱格式潮流數學模型。According to the characteristic transformation of the eme in the process of its deformation, the stress concentration belt engendered by the coal wedge of the protective coat can be ascertained and the electromagnetic radiation measured result is consistence with the calculation result of the site survey materials
根據煤體變形破裂過程中產生的電磁輻射信號特徵變化,確定了保護層采空區煤柱產生的應力集中帶,電磁輻射測定結果與現場勘測資料計算結果相吻合。Are regarded as high - level waste. the hlw contains highly - radioactive fission products and radionuclides with long - lived radioactivity
,屬于高放射性廢物,包含具高度輻射性的裂變產物和有長衰變期的放射性核素。Are regarded as high - level waste ( hlw ). the hlw contains highly - radioactive fission products and radionuclides with long - lived radioactivity
,屬于高放射性廢物,包含具高度輻射性的裂變產物和有長衰變期的放射性核素。Standard test method for gamma energy emission from fission products in uranium hexafluoride
六氟化鈾裂變產物釋放的射線能量輻射的標準試驗方法The department ' s programs are at the forefront of nuclear science and technology leading to improved performance of fission - powered reactors, the technological applications of nuclear and radiation phenomena in biomedical, industrial, and environmental fields, and the development of nuclear fusion as an energy source
本系的課程走在核子科學和科技的最尖端,目的在提高核裂變反應爐的效能、核子和輻射在生物醫學、工業和環境領域的應用,以及研發核融合成為穩定的能源。3 ) the results of studying on the chromosomal mutation and mitosis of the wheat irradiated by uv - b indicated that the rate of mitosis was inhabited by uv - b radiation ( 10. 08 kj ? m " 2 ? d " 1 ) in wheat cells, and some types of chromosome aberration were induced
( 3 )對染色體及細胞分裂的研究結果表明,增強uv - b輻射能抑制小麥細胞的有絲分裂率,產生落後染色體、染色體橋、游離染色體、核變形等畸變。The dependence of the electron in 4i _ ( 13 / 2 ) level on the measured temperature and the radiative transition property of different stark sub - level were discussed
討論了~ 4i _ ( 13 2 )能級電子布局隨測量溫度的變化以及不同stark劈裂態電子向下輻射躍遷的特性。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。Rapid responses occured when cells were exposed to genotoxic stresses : one is initiating dna damage checkpoint that leads to arrest in gl, in order to provide the cell with sufficient time to repair damaged dna, or leads to arrest in g2, in order to avoid defective chromosome happening mitosis. on the other hand, if damage to the genome is excessive, the cells initiating apoptosis, when damages cannot be repaired
這是因為細胞在受到諸如電離輻射等基因毒應激損傷時,細胞最先作出的細胞學反應:一,起始dnadamagecheckpoint使細胞周期阻滯( arrest )在g1期,贏得時間識別與修復損傷,避免損傷的dna進行錯誤的復制,或和阻滯在g2期,避免缺陷的染色體進一步分裂;二,損傷嚴重而修復無望啟動細胞死亡程序,清除那些帶有病變傾向的細胞危害機體。Biological damage to cells, tissues and whole organisms takes place over hours to several years. this can include the immediate death of cells, reduction of capacity for cell division, mutation or cancerous change
電離輻射對細胞組織及整個生物的破壞則可歷時數小時至數年,導致細胞即時死亡減低分裂能力突變或生癌。Now, the scholars of internal and overseas pay close attention to the mechanics function of sfrc, such as in the references [ 3, 13, 14, 16, 23, 27, 28, 29 ], and so on. however, in the practice pavement engineering project, the sfrc is given not only the effect of vehicle and shock load, but also the effect of the temperature changes and sun radiation. therefore, the temperature and load stress are the main factor of the damage of the rigid pavement structure. because of the existent of the temperature stress, the sfrc pavement structure may be destroyed by the expand of crack. therefore, the research and analysis of the temperature load and stress of sfrc pavement structure are important to control the crack of sfrc pavement structure
目前,國內外學者對鋼纖維混凝土的研究著重於鋼纖維混凝土的力學性能,如文獻[ 3 , 13 , 14 , 16 , 23 , 27 , 28 , 29 ]等。而鋼纖維混凝土在實際路面工程的應用中,不僅要受到路面車輛移動載荷和沖擊載荷的作用,還要承受路表的溫度變化及日輻射的作用,所以溫度應力與車輛荷載應力同樣都是剛性路面產生破壞的主要因素。由於溫度應力的存在,會引起鋼纖維混凝土路面板結構產生裂紋。Research and analysis were carried on frequency spectrum characteristics of loaded coal ' s eme during deformation and fracture process
摘要對受載煤體變形破裂時電磁輻射( eme )的頻譜特徵進行了研究分析。The coal engenders eme in the process of it ' s deformation on the effect of stress concentration, the deformation fracture of the coal is more fierceness, the generate stress gets more strong and the eme gets more
煤體在應力集中帶作用下產生屈服變形的過程中會產生電磁輻射,產生的應力越高,煤體變形破裂越劇烈,向外輻射的電磁輻射信號就越強。The authors have observed the progress of deformation and destruction of coal bodies in the experiment, carried out the macroscopic and microscopic research of the destruction progress of coal samples under load by means of servo electro - hydraulic loading test and electromagnetic radiation and audio emission monitoring, analyzed the cracking rate of coal samples under different situation, investigated the formation and development of cracking by use of fracture and elasticity mechanics, and thus established a sound experimental basis for the prediction by using gray classification
摘要進行了煤體變形破壞過程實驗,利用電液壓伺服加載試驗、電磁輻射和聲發射監測手段,從宏觀、細觀、微觀三個方面對煤樣受載破裂過程進行試驗研究,分析煤樣的裂隙發展速度及其所處的不同的狀態,並參照目前的預測方法提出了煤與瓦斯突出危險狀態灰色分類方法。In addition, the dna dsbs induced by heavy ions were also analyzed by gel electrophoresis technology, and compared with afm results
此外,使用凝膠電泳技術也對輻射誘發的dna鏈斷裂情況進行了分析,得到了dna分子形態隨劑量的變化規律,並與afm結果進行了比較。分享友人