chemical activation 中文意思是什麼

Neutron activation or chemical analysis for uranium are used as a follow-up.

中子活化分析和化學分析鈾可作為進一步追索的方法。

The energy of activation is the minimum energy level that two colliding molecules must possess in order to undergo a given chemical reaction.

激活能就是使兩個碰撞分子得以進行某特定的化學反應所必須具有的最低能級。

Effects of electrical pulses combined with chemical activation on the parthenogenetic development of porcine oocytes

電脈沖與化學激活聯合處理對豬卵母細胞孤雌發育的影響

The activation includes air and carbon dioxide activation, and deposition includes chemical vapor deposition of benzene

所採用的活化方法為空氣活化和二氧化碳活化法。沉積方法為苯沉積。

The preparation and activation methods of machine milling ( mm for short ) for ni / al and ti / al system tiny powder are researched. the technical treatment of mm makes metal powder a lot of changes in mechanical properties, chemical properties and organization structure

研究了ti al ， ni al系金屬微粉的mm制備與活化方法，分析了mm處理工藝使金屬粉末在物理性能、化學性能和組織結構等方面的變化。

This text completely and systematically studies the status and the development of the pyrolysis and the fluidization of biomass, which distill the bio - oil in the domestic and international area, as well as the existing problems. this thesis primarily include following aspects : ( l ), by experimenting and measuring the energy ( heat value ) and the content of c, h, n chemical element of right 20 kinds of common biomass, on the base of the experimental result, and respectively established the biomass energy predict experiment formula with the element of h and c is from change, and passed the ro. os examination, which provides the basis and convenience for flash pyrolysis fluidization device energy to convert the rate to compute with biomass energy utilization calculation ; ( 2 ), proceeded the tg and dtg experimentation equal velocity ( 10 ? / min, 20 ? / min, 40 ? / min, 60 ? / min ) heating and constant temperature heating by studying on eight kinds of biomass samples, according to the experimental data and arrhenius formula, we established the dynamics model of pyrolysis of, then, using the goast - redfern and p function, we also solved the dynamics parameters and analyze out every kind of biomass ' s frequency factor and parameters of activation energy, and established the every kind of dynamics model of pyrolysis of biomass, all of these provide the theories and basis to make sure the reactor ' s flash pyrolysis work temperature scope design and the describing of pyrolysis reactor dynamics ; ( 3 ), in order to study and ascertain the process of heat completely getting to pyrolysis time of varied size biomass particles, we observed and measured the ratio of length and diameter ( l / d ) with the varied biomass through electron microscope, we concluded the l / d ratios usually is from 5. 0 to 6. 0, the average is 5. 3 ; ( 4 ), we studied the process of biomass transiting and the theory of complete pyrolysis time with the theory of complicated heat field, we got the time ( t ) of the varied size biomass particles arriving to complete pyrolysis, and we knew that the complete pyrolysis time and the time which get to the biggest production ratio are identical, all of these studies provide the theory base for design and forecasting the flash pyrolysis reactor solid state resort time ; ( 5 ), according to the above experiment result, synthesize to make use of the engineering the mechanics, engineering the material, machine the design to learn the principle, deduce, establish the theory of rotation cone flash pyrolysis reactor material resort time ( t ) and reasonable rotation velocity ( or frequency ) relation theory ; and ( 6 ), we gave the reactor ' s smallest cone angle certain, reactor cone wall strength design theory, the reactor production ability theory, the power design method and the critical rotation velocity theory

本文較全面、系統地綜述了國內外生物質熱解液化制取生物燃油技術研究發展現狀及存在的問題，主要研究內容有： （ 1 ）實驗、測定了20種常見生物質的能量（發熱量）和c 、 h 、 n元素含量，根據實驗結果分別建立了以h和c為自變量的生物質能量預測經驗公式，並通過r _ （ 0 . 05 ）檢驗；為閃速熱解液化裝置能量轉化率計算和生物質能量利用率計算提供了依據和方便； （ 2 ）選擇了8種生物質試樣作了等加熱速率（ 10 min 、 20 min 、 40 min 、 60 min ）和恆溫加熱的tg和dtg實驗，根據實驗數據和阿倫尼烏斯公式建立了生物質熱解反應動力學微分方程，並採用goast - redfem積分法和p函數對其動力學參數進行了求解，解析出各種生物質的頻率因子和活化能參數，進而建立了各種生物質的熱解動力學模型，為科學確定反應器的閃速熱解工作溫度范圍及熱解反應動力學描述，提供了理論和依據； （ 3 ）為研究和確定不同尺度的生物質顆粒中心達到全熱解的時間，在體視顯微鏡下對不同粒度的生物質顆粒的長徑比進行了實驗觀察和測定，得出生物質的長徑比（ l d ）一般在5 . 0 6 . 0之間，平均為5 . 3的結果； （ 4 ）採用復雜溫度場傳熱學理論對生物質傳熱過程及充分熱解時間理論進行了研究，解析推導出了不同尺寸生物質顆粒中心溫度達到充分熱解溫度的時間（ t ） ，得出了理論推導的充分熱解時間與最大產油率的熱解時間相一致的結果，為閃速熱解反應器固相滯留時間設計和預測提供了理論依據； （ 5 ）根據上述實驗結果，綜合運用工程力學、工程材料、機械設計學原理，推導、建立了轉錐式閃速熱解反應器物料滯留時間（ ）與轉速（或頻率）合理匹配理論； （ 6 ）提出了轉錐式閃速熱解反應器的最小錐角設計、錐壁強度設計、生產能力設計理論和功率計算方法及臨界轉速理論等。

Preparation and characterization of high specific surface area activated carbon from bamboo by chemical activation with koh

活化法高比表面積竹質活性炭的制備與表徵

With broad application of the method of neutron activation and chemical - spectral analysis, the accuracy of analysis has greatly improved ( up to 0. 01 10 ^ ( - 9 ) )

隨著中子活化法和化學光譜法的廣泛應用，分析精度有了大幅度提高（可達0 . 01 10 ^ （ - 9 ） ） 。

The second stage is stage of the matter transfers the activated matter, that is to say, minerals build up their surface area after passing though physical weathering, maifan stone form a lot of clay mineral, oxide, oxhydroxide and collide mineral after passing though chemical weathering. it makes nutrition elements transform from crystal state to adsorption state and it expands the activation of mineral, in the latter stage, it makes maifan stone have many special physicochemical adjusting character, for example, ph and foi bi - directional absorptive and ion exchange character, so these characters expand maifan stone ' s uses

第二階段為物質轉變的活性階段，即通過物理風化增大表面積、通過化學風化形成大量粘土礦物、氧化物和氫氧化物及膠體礦物，使營養元素由結晶態轉變為吸附態，從而大大增加了其活性。在後一過程中麥飯石還形成了許多特殊的物理化學性質，如ph值和f _ （ o2 ）的雙向調節性，吸附性和離子交換性等，從而擴大了其用途。

Drying of treatment chemical, first drying of glue, second drying of glue and activation. this system is also suitable for water - borne glue

處理藥水烘乾，第二次膠水烘乾及活化，此系統亦適用於水性膠。

Abstract : according to the decomposition failure mechanism of the boundary reaction film and the dynamics theory of the chemical reaction, the failure process of the boundary film is quantitatively described, and then the decomposition rate of reaction film is put forward, hereby the quantitative criteria - temperature, speed and activation energy criterion, for selecting the additives are determined

文摘:根據邊界反應膜分解失效機理和化學反應動力學理論，對邊界膜的失效過程作了定量數學描述，提出了反映膜分解率的概念，據此確定了添加劑的溫度、速度和活化能等三個定量選用準則

Effect of different chemical activation methods and electro - activation parameters on early development of porcine oocytes matured and parthenogenetically activated in vitro

不同化學激活方法和電激活參數對豬體外成熟卵母細胞早期孤雌發育的影響

An apparent activation energy of 182. 35kj / mol was obtained for the range of 1250 c to 1350 c, and that of 82. 32kj / mol for the range of 1350 c to 1400 c. at the same time, the relation between reaction velocity and reaction time is linear in the range of 1250 c to 1350 c, but it is a parabola curve in the range of 1350 c to 1400 c. so it can be concluded that the process undergone in the range of 1250 c to 1350 c is controlled by chemical reaction while that in the range of 1350 c to 1400 c by diffusion

本實驗採用的試樣是以鈦白粉和活性碳按1 ： 30的比例混合料為原料，在6mp下成型為37 . 2 26mm的柱形樣塊，分別在1250 、 1350和1400于氮化爐中測定反應速率與時間的關系。當反應在1250 1350時，表觀活化能為182 . 35kj mol 160kj mol ，反應速率與時間的關系是線性的，說明此階段反應由化學反應控制。當反應在1350 1400時，表觀活化能為82 . 32kj mol 160kj mol ，反應速率與時間的關系符合拋物線方程，說明此階段反應由擴散控制。

Effect of electrical and chemical activation on reconstructed embryo formed by rat - mouse inter - species somatic cell nuclear transplantation

小鼠種間體細胞核移植重組胚發育的影響

Its existing form, distribution, chemical structure, physiological activation as well as its application in animal production are introduced in this article

現介紹其存在形式，分佈、化學結構，生理活性及其在動物生產中的應用等。

Parthenogenetic activation of buffalo oocytes and compare embryo development after chemical activation and in vitro fertilized

水牛卵母細胞孤雌激活及孤雌胚與體外受精胚發育比較

Parthenogenetic activation of buffalo oocytes and compare embryo development after chemical activation and in vitro fertilization

水牛卵母細胞孤雌激活及孤雌胚與體外受精胚發育的比較