gc-a 中文意思是什麼

gc-a 解釋

  • a : an 用在以母音音素開始的詞前〉 indefinite art 1 〈普通可數名詞第一次提到時，冠以不定冠詞主要表示類...
  1. Gc : so for you, a martial arts movie must have a moral code, otherwise it ' s just an action film

    因此對你來說，一部武術電影必須有一個道德法則，不然就只是動作電影。
  2. The base pair ratio, at : gc, is constant within a species but differs between species

    At : gc之間的堿基比具有種內特異性，但在不同種之間往往是不同的。
  3. Presence of vulcan xc - 72 active carbon powder in the pt / moox / gc composite electrode by electrochemical codeposition made peak potential of methanol oxidation a further negative shift of about 50mv and a further promotion of co - tolerant performance for methanol oxidation

    催化劑中vulcanxc - 72活性碳粉的引入即共沉積制備的pt moo _ x c gc電極催化劑甲醇氧化峰電位又進一步負移50mv左右，抗co中毒催化性能又進一步提高。
  4. In this thesis, in order to reducing the amount of the pt catalyst, improving the electrocatalytic activity of the pt catalysts and utilization ratio of pt, the electrochemical codeposition method by cyclic voltammetry ( cv ) was used to prepare a series pt / moox / glassy carbon ( gc ) composite electrodes with high dispersibility. the composite electrode, pt / moox / gc, was characterized to study its composition and its electro chemical behavior by cv. using the xrd and sem techniques, the size and the dispersion degree of the catalyst particles were studied in presence or absence of moox in the catalyst

    為了降低主催化劑pt的用量、提高pt的活性和利用率，本論文利用循環伏安法共沉積制備高分散的pt moo _ x催化劑顆粒，利用循環伏安電化學表徵、 xrd和sem技術研究了引入moo _ x后的催化劑即pt moo _ x顆粒的粒子大小、分散狀態；利用icp - aes定量分析pt moo _ x催化劑顆粒的組成含量；並藉助于電化學方法分別評價了pt moo _ x gc電極催化劑的對甲醇的電催化活性和穩定性、氧還原電催化活性。
  5. Dna sequence analysis indicated that tn5gusa5 is prone to insert into low gc content regions ; guanine is a preferential base at the first place and cytosine at the last site of target sequence

    在質粒上tn5gusa5也傾向于插入低gc含量區；堿基g和c分別在靶序列的首位和末尾出現的幾率高。
  6. Method : a static headspace gc - ms method was used to detect sulfur in the fumatory radix bupleuri, the authentic samples free of sulfur was detected as reference

    方法：運用靜態頂空毛細管氣相色譜質譜聯用技術進行檢測市售柴胡是否經硫黃熏蒸，並從產地採集未經硫黃熏蒸的柴胡作為陰性對照藥材與市售柴胡進行比較。
  7. Multi - residue analysis of 20 organophosphorous insecticides in vegetable was performed by db - 1701 capillary column coupled with gc - fpd detector in this study. ethyl acetate was used to extract the pesticides from vegetable samples using a homogenizer. the extract was separated, concentrated and detected by gc - fpd

    通過四種提取方法的比較，確立了蔬菜中20種有機磷殺蟲劑多殘留的分析方法為：乙酸乙酯提取劑、高速勻漿法提取，經離心，濃縮， gc - fpd法測定。
  8. And l. mollis hemsl, a random amplified polymorphic dna ( rapd ) analysis was performed for the first time. the screening of 40 decamer oligonucleotides allowed the selection of 11 primers used for the analysis, the dna fingerprints of 10 samples were constituted and the genetics evidence was furnished. to study on the contents and chemical constituents of essential oil from leaves and fruits of different species of litsea lam, the chemical compositions were separated and identified by gc / ms

    為了評價山雞椒和毛葉木姜子的不同品種和品系，採用rapd技術，從40個引物中篩選出11個特徵引物，首次獲得山雞椒和毛葉木姜子以及它們的栽培品系的dna分子指紋圖譜，從分子水平上較全面地評價了各樣品間的親緣關系，從而為栽培品種的劃分提供了一定的遺傳學上的證據。
  9. Experimental studies were conducted at the yucheng comprehensive experimental station of the chinese academy of sciences during the period from march to june in 2003. respiration of a pulverous sandstone soil was studied under cultivation of winter wheat over a growth season. soil ch4 was measured by the static - chamber method combined with gas chromatography ( gc ) technique. the results indicated that the soil of winter wheat field in rapid growth season is a weak sink of ch4

    本文利用靜態箱氣相色譜（ gc ）分析的方法，在中國科學院禹城綜合試驗站，對華北平原冬小麥生長旺季期間麥田土壤中ch _ 4氣體通量進行了測定，試驗起止時間為2003年3 6月，得出華北平原典型冬麥田土壤是大氣ch _ 4的弱吸收匯。
  10. Their properties have been investigated by using scanning electronic microscopy ( sem ), differential scanning calorimetry ( dsc ), x - ray diffraction ( xrd ), thermogravimetry - differential thermal analysis ( tg - dta ), infrared spectroscopic analysis ( ir ), and gas chromatography ( gc ), etc. the effects of the mulser ' s stirring rate and the emulsifier concentration on the properties of encapsulated pcms have been systematically studied, and nanopcms have been obtained by increasing the stirring rate or the emulsifier concentration. the influences of different nucleating agents on micropcm performances have also been investigated in detail to search for a suitable nucleating agent to prevent micropcms from super - cooling

    首先，系統研究了乳化機轉速和乳化劑濃度對膠囊性能的影響，並通過提高轉速或乳化劑濃度獲得相變材料納膠囊；其次，系統研究了不同成核劑對微膠囊性能的影響，找到合適的成核劑抑制了相變材料微膠囊的過冷現象；再次，詳細研究了環己烷對膠囊性能的影響，並通過添加適量環己烷提高了相變材料微膠囊及納膠囊的耐熱溫度。
  11. The 11 - hsd1 expression in the fetal brain also gradually increases with gestational age at late gestation and continues to increase in the hippocampus after birth until the 15th postnatal day, which shows a pattern very similar to th secretion. furthermore, previous data show injection of thyroxine ( t4 ) to normal newborn rats up - regulates gr expression in the hippocampus. these data suggest that the role of th in neural development may be partially ( if not all ) accomplished through regulating gc ' s activity

    在海馬結構， 11 - hsd1與gr共存於同一海馬神經元內，主要呈現還原酶的特性，能使無活性的11 -脫氫皮質酮（ a ）可的松（ e ）轉化為有活性的皮質酮（ b ）皮質醇（ f ） ，從而提高組織局部的糖皮質激素濃度，這樣， 11 - hsd1的存在就為親和力較低的gr發揮作用提供了前提條件。
  12. A quantitative analytical method of 5 % diethylmethylbenzamide in drive - worms floral - water by gc was introduced, dibutyl phthalate was selected as internal standard

    摘要本文介紹了以鄰苯二甲酸二丁脂為內標物，對5 %避蚊胺驅蟲花露水進行有效成份測定的氣相色譜分析法。
  13. A comprehensive two - dimensional gas chromatography / time - of - flight mass spectrometry ( gc gc / tofms ) method has been developed for the characterization of phenols in mainstream cigarette smoke condensate

    建立了卷煙主流煙氣粒相物中酚類化合物組成研究的全二維氣相色譜飛行時間質譜方法，並用所建立的方法對一種市售混合型卷煙主流煙氣粒相物中的酚類鎦分組成進行了表徵。
  14. Experience in operating gc or gpc or aas or nir ( near infrared ) or automatic titrator is a must

    具有操作gc或gpc或aas或nir （近紅外）或自動滴定儀等儀器的工作經驗。
  15. In this model reaction the concentration of product and substrate in solvent system is at a level of umol / ml. as the same time gas chromatogram ( gc ) permits rapid analysis of microliter quantities of sample with high resolution

    根據該模型反應中底物和產物都是微量的（ mol / ml ）這一特點，建立了以氣相色譜（ gc ） 、火焰離子檢測器（ fid ）作為手段的檢測方法。
  16. Results by gc - tofms, the ferulic acid was successfully isolated from the extracts of rpc in a relative content of 5 %

    結果阿魏酸在蘆根提取物中的相對質量分數為5 % 。
  17. Conclusion gc - tofms technique is a rapid, accurate, sensitive, and reliable method for determination of the relative content of ferulic acid in rpc and identificatiion of its structure

    結論氣相色譜飛行時間質譜法測定和鑒定蘆根中阿魏酸含量和結構是一種快速、準確、靈敏、可靠的檢測方法。
  18. The volatile oil of a. thaliana transferred with mint total dna was analyzed by means of gc - ms. two transgenic plants were measured to contain menthol component in 250 plants of tl generation and one plant in then * 267 progenies, which provided explicit evidence for ion beam - mediated polygenic character transmission between distant species. two conclusions were drawn : one was that multiple genes controlling the same trait could be transformed into the receipt and efficiently expressed, the other was that the transferred new character was hereditary, i. e., the genes controlling the new character could inherit

    用gc - ms分析了離子束介導薄荷全dna轉化的擬南芥菜個體的揮發油成分，在250個轉化當代植株中有兩株被測出含有薄荷醇，在這兩株的267個t2代植株中仍有1株被測出含有薄荷醇，該實驗為離子束介導外源全dna轉化實現物種間多基因復雜性狀的轉移提供了明確的證據。
  19. A quantitative analytical method for 4. 5 % beta - cypermethrin ec by gc was introduced, dicyclohexyl - o - phthalate was selected as the internal standard

    摘要本文介紹了以鄰苯二甲酸二環已脂為內標物，對4 . 5 %高效氯氰菊脂乳油進行有效成份測定的氣相色譜分析法。
  20. Gc : fearless is billed as your " final martial arts epic, " but the buzz is that you ' re doing rogue. why isn ' t that a martial arts film

    Gc （即筆者） ： 《霍元甲》是標榜著你「最後的武術電影， 」但是有傳聞說你在拍《游俠》 。為什麼那不是武術電影？
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