tof 中文意思是什麼

tof 解釋
成串刺激
  1. ( 3 ) the possible mechanism of dissociation / ionization is analyzed, ( 4 ) it is shown that the main dissociation channel is non - resonant photodissociation of parent molecule followed by the further photodissociation or photoionization of the fragments. in chapter six, the rempi - tof - ms of acetaldehyde are investigated in the range of 279. 5 - 286. 5nm. the main results are : ( 1 ) the tof - ms and rempi spectrum of acetaldehyde are measured

    第六章主要報道了乙醛分子在279 . 5一286 . 5nm范圍內的共振增強多光子解離一電離過程的實驗研究結果和分析結果，主要內容有: （ l ）實驗測定了乙醛分子的共振增強多光子電離的tof質譜和分質量的既mpi譜。
  2. Proteins were identified with peptide mass fingerprinting using matrix - assisted laser desorption ionization time of flight mass spectrometry ( maldi - tof ms ) after tryptic in - gel digestion

    差異蛋白經胰蛋白酶酶切后產生肽片段，再利用基質輔助激光解吸電離飛行時間質譜得到肽指紋圖譜來鑒定。
  3. In order to improve the resolution power, the energy method need increase ion total energy, while, the choice of the right gas pressure, the right flight length and increase total energy are effective to improvement of resolution for gf - tof method

    增加對同量異位素的分辨能力，對e - e探測方法就要增加離子能量，而gf - tof方法除了增加離子能量外，合理的選擇飛行路徑的長度也能提高分辨能力。
  4. Primary strucure and identification of a home - keeping protein ( a73 ) were obtained by maldi - tof / ms and databases. protein a73 is a dna repair protein, named recn, which is indispensable protein in genetic recombination and recombination repair

    （ 2 ）不同生長期的rt19的蛋白表達數量和種類約有80是相同的，證實rt19在正常的生理過程中大部分蛋白的表達是穩定的，即為持家蛋白（如a73 ） 。
  5. The hwtx - i gene was chemically synthesized according to its known cdna sequence, the gene was inserted into vector ppic9k which contained aoxj promotor and the sequence of a secreting signal peptide - a - factor, the cloning ppic9k / hwtx - i was constructed and confirmed by two - step pcr and dna sequence analysis, then it was transformed into host strain gs115, a his + muts cell line was screened and multicopy transformants were screened by various g418 concentrations, the multicopy transformant was named gh1. gh1 was cultivated in flasks. after 6 days of induction by 0. 5 % methanol, the supernatant was checked by 16. 5 % tricine - sds page, which showed there was a band in the position of 3. 5 - 6. 1kd, then it was isolated and desalted by ultrofiltration followed by ion exchange of cm column, after reverse phase hplc of ci8 and vacuum drying, the purified rhwtx - 1 was obtained which was proved to be correct recombinant hwtx - i by tricine sds - page, maldi - tof mass spectrometry, amino acid composition analysis, the n - terminal amino acid sequence and its biological activity, the final field of the purified rhwtx - i was about 80mg / l, accounting for 23. 6 % of it total secretory proteins

    將帶有hwtx -基因的ppic9k經blgii線性化后，轉化酵母宿主菌gs115原生質體后經篩選陽性克隆並經表型鑒定為his ~ + mut ~ s酵母菌，進一步用遺傳毒素g418篩選多拷貝的轉化菌株，命名為gh1 ；將gh1甲醇酵母菌用0 . 5的甲醇誘導表達，發酵上清經90飽和度的（ nh _ 4 ） _ 2so _ 4沉澱， yw - 3 （ mwc03000 ）的超濾膜超濾，再經cm陽離子交換， c _ （ 18 ）反相hplc純化得到分子量為4kd左右的組分，其中4289 . 05的組分經質譜鑒定，氨基酸組成分析和序列測定為正確的表達產物，生物學活性表明其活性為天然毒素活性70 % ，表達量為80mg / l 。
  6. Identification of vimentin in subline coc1 ddp by maldi - tof mass peptide map analysis

    亞細胞中波形纖維蛋白的肽質譜指紋分析
  7. Analysis of the primary structure of rhepo by maldi - tof - ms

    一級結構的質譜分析
  8. Application of maldi - tof - ms in biochemistry and polymer chemistry

    在生物化學和高分子化學中的應用
  9. Time - of - flight, tof

    時間飛躍法
  10. About 25 salt - induced proteins were identified by maldi - tof / ms, and finally the function of 17 induced proteins were determined, including heat - shock proteins ( groes, clp ). abc transporter, rna polymerase ( p - subunit ) and enzymes involved in signal transduction and metabolism. meanwhile, 84 proteins were idifferentially expressed after salt shock 5 min and 50 min in late exponential phase

    應用maldi - tof ms對30個鹽脅迫蛋白進行分析，已初步確定17個誘導蛋白的功能，其中包括與鹽脅迫相關的熱激蛋白（ groes 、 clp ） 、與代謝途徑和信號傳導等有關的酶，以及abc轉運蛋白、轉錄調節蛋白、 rna聚合酶的亞基等。
  11. 57 protein spots out of about 1000 detectable spots on the 2 - d gels were indentified by the following two methods : l ) n ~ terminal edman degradation microsequencing after the protein spots were electro - transferred to pvdf membrane. 2 ) maldi - tof - ms peptide fingerprint analysis of the protein spots and protein database searching. the 2d protein maps of the rice spikelet during the sterile and fertile stages were compared

    二是通過原位酶解，抽提蛋白質片段進行maldi - tof質譜分析，利用肽質量指紋圖數據在數據庫中進行檢索，在雙向電泳凝膠上取了57個點進行分析，有34個蛋白質點在數據庫得到歸屬鑒定。
  12. In chapter five, the rempi - tof - ms of methanol are investigated in the range of 279. 5 - 286. 5nm. the main results are : ( 1 ) the tof - ms and rempi spectrum of methanol are measured. ( 2 ) the tof - ms of methanol is identified ; the rempi spectrum of c, ch3 and ch2o are analyzed

    第五章主要報道了甲醇分子在279 . 5一286 . 5nm范圍內的共振增強多光子解離一電離過程的實驗研究結果和分析結果，主要內容有: （ 1 ）實驗測定了甲醇分子的共振增強多光子電離的tof質譜和分質量的rempi譜。
  13. Seldi - tof - ms surfaced enhanced laser desorption ionization time of flight mass spectroscopy

    方法採用表面增強激光解吸電離飛行時間質譜技術
  14. Gf - tof method is a new method to identify particles. it is significant for miniaturization and popularity of ams

    這是一種新的鑒別同量異位素方法，它對于加速器質譜的小型化和普及具有十分重要的意義。
  15. Fourth, ams measurement with gf - tof detector system. fifth, conclusions and discussions. gf - tof method is described in detail at chapter 3

    用源調試時，系統在真空中的最佳時間分辨（ fwhm ）為300ps 。
  16. The center is equipped with state - of - the - art facilities, including the most modern two - dimensional gel electrophoresis systems, automatic gel excision and in - gel digestion systems, as well as q - tof and maldi - tof

    基因體研究核心設施之一的蛋白體學實驗室，裝備了最尖端的蛋白體
  17. Twenty - six induced proteins were analyzed by matrix assisted laser desorption / ionization time - of - flight mass spectrometry ( maldi - tof / ms ) and identified by database searching. among them, 20 ones were assigned and their functions were known, including salt stress proteins, or enzymes are related to salt stress, y - butyrobetaine and iipopolysaccharide synthesis, metabolism pathway and signal transduction

    應用maldi - tof ms對26個鹽激誘導蛋白進行分析，將獲得的肽指紋圖譜經數據庫檢索，初步確定了20個誘導蛋白的功能，其中包括與鹽脅迫、 -丁酰甜菜堿、脂多糖合成、代謝途徑和信號傳導等有關的酶。
  18. Characterization of impurity in naltrexone hydrochloride by q - tof tadem mass spectrometry

    串聯質譜法鑒別鹽酸納曲酮藥物中的雜質
  19. Isobaric identification with gf - tof method is based on the different time of flight caused by the different energy loss. the resolution of gf - tof is mainly affected by two factors. first, the rises time of current pulse from start and stop detector

    Gf - tof方法對同量異位素的分辨取決于e的不同而產生的時間不同，時間分辨僅來源於定時探測器電流脈沖上升時間的快慢和離子在氣體介質中的能量離散。
  20. The double differential cross section ( ddx ) of neutron emission from 51v at 10. 26 mev neutrons was measured using normal and abnormal fast neutron tof spectrometers on hi - 13 tandem accelerator in china institute of atomic energy ( ciae ). the problem of influence from breakup neutrons of the d ( d, n ) neutron source on secondary neutron spectra was successfully solved

    用中國原子能科學研究院hi - 13串列加速器上的常規和非常規快中子飛行時間譜儀，測量了10 . 26mev中子引起~ （ 51 ） v的次級中子雙微分截面，成功解決了d （ d ， n ）中子源中破裂中子對次級譜的影響。
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