正離子質譜 的英文怎麼說

中文拼音 [zhēnglízizhípǔ]
正離子質譜 英文
positive ion mass spectrum
  • 正 : 正名詞（正月） the first month of the lunar year; the first moon
  • 離 : Ⅰ動詞1 （離開） leave; part from; be away from; separate 2 （背離） go against 3 （缺少） dispens...
  • 子 : 子Ⅰ名詞1 （兒子） son 2 （人的通稱） person 3 （古代特指有學問的男人） ancient title of respect f...
  • 質 : Ⅰ名詞1 （性質; 本質） nature; character; essence 2 （質量） quality 3 （物質） matter; substance;...
  • 譜 : Ⅰ名詞[書面語]1 （按類別或系統編成的書或冊子等） table; chart; register 2 （指導練習的格式或圖形）...
  • 離子 : [物理學] ion
  1. The correction of mass fractionation in the measurement of rhenium and osmium isotope ratios by icp - ms

    電感耦合等離子體質譜法測量錸和鋨同位素比值的質量分餾校正
  2. Standard practice for alternate actinide calibration for inductively coupled plasma - mass spectrometry

    感應耦合等離子體質譜法的交替錒系校正的標準規程
  3. 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 。
  4. Standard practice for oil spill source identification by gas chromatography and positive ion electron impact low resolution mass spectrometry

    用氣相色譜法和正離子電子沖擊低解析度質譜法識別溢油源的標準實施規程
  5. Water quality - determination of dissolved fluoride, chloride, nitrite, orthophosphate, bromide, nitrate and sulfate ions, using liquid chromatography of ions - part 1 : method for water with low contamination

    水質.液態離子色譜法測定溶解的氟化物氯化物亞硝酸鹽正磷酸鹽溴化物硝酸鹽和硫酸離子.第1部分:低雜質水的測定方法
  6. Water quality - determination of dissolved anions by liquid chromatography of ions - determination of fluoride, chloride, nitrite, orthophosphate, bromide, nitrate and sulfate ions - method for water with low contamination

    水質.使用離子液相色譜法測量可溶解氟化物氯化物亞硝酸鹽正磷酸鹽溴化物硝酸鹽和硫酸離子.輕微污染水測定方法
  7. There are a few basic elements to a mass spectrometer : an inlet to introduce the sample gas into the vacuum of the mass spectrometer, an ion source to convert the sample gas molecules into positively charged ions, a mass filter to separate the ions using magnetic or electric fields and a detector that quantifies the amounts of ions at different masses

    質譜儀的幾個基本組成部分：將樣品引入質譜儀的進樣系統，將氣體分子轉變為正離子的離子源，使用磁場或電場分離離子的質量分析器，對不同質量數離子定量的檢測系統。
  8. A diploid - dependent regulatory apparatus was proposed by prof. luo et al to regulate gene expression. the haploid condition results in obstruction of gene expression and abnormal development because the diploid - dependent regulatory apparatus will regulate gene expression in the haploid embryos according to the same rule as in the diploid embryos. to study the difference at the protein expression level of the embryos of haploid and diploid in development and to identify the important proteins associated with the embryonic development, we extracted the total proteins of both the gynogenetic haploid and diploid embryos of goldfish in the same eye formation stages ( divided into the substages of he - 1 and de - 1, he - 2 and de - 2, he - 3 and d e ~ 3 respectively )

    為了研究在金魚雌核發育單倍體和二倍體胚胎發育過程中的蛋白質表達水平的差異，並鑒定一些與發育相關的重要蛋白質，我們以遺傳背景一致的金魚雌核發育單倍體和正常二倍體的相應眼睛形成的發育階段的胚胎為材料（ 3個時期，分別為he - 1和de - 1 ， he - 2和de - 2 ， he - 3和de - 3 ） ，然後提取胚胎的全蛋白，用二維聚丙烯酰胺凝膠電泳的方法進行蛋白質點的分離，獲得了質量較好的凝膠圖譜，結果顯示大部分蛋白質點分佈在ph5 - 10 ，相對分子質量在10000 - 50000da 。
  9. Possible geometrical structures and relative stability of semiconductor microclusters ganpn ( n = 1 - 5 ) are studied by using density functional calculations with generalized gradient approximation ( b3lyp ). for the most stable isomers of ganpn ( n = 1 - 4 ) clusters, the electronic structures, vibrational properties, dipole moments, polarizability and ionization potential are analyzed using hf, mp2, cisd and b3lyp methods with different basis sets

    用梯度修正的密度泛函方法（ b3lyp 6 - 31g ）優化了ga _ np _ n （ n = 1 - 5 ）團簇的可能幾何構型，計算了各穩定構型的的振動光譜，並用不同方法（ hf 、 mp2 、 cisd等）研究了各穩定構型的電子結構、電離勢、偶極矩和極化率等性質。
  10. Water quality - determination of dissolved fluoride, chrolide, nitrite, orthophosphate, bromide, nitrate and sulfate ions, using liquid chromatography of ions part 1 : method for water with low contamination

    水質.用離子液相色譜法測定溶解的氟化物氯化物亞硝酸鹽正磷酸鹽溴化物硝酸鹽和硫酸鹽離子.第1部分:低雜質水的方法
  11. Water quality - determination of dissolved anions by liquid chromatography of ions - determination of bromide, chloride, nitrate, nitrite, orthophosphate and sulfate in waste water

    水的質量.用液態離子色譜法測定已溶解的陰離子.第2部分:在廢水中溴化物氯化物氮化物亞硝酸鹽正磷酸鹽和硫酸鹽的測定
  12. Water quality - determination of dissolved anions by liquid chromatography of ions - part 2 : determination of bromide, chloride, nitrate, nitite, orthophosphate and sulfate in waste water

    水質.用液態離子色譜法測定已溶解的陰離子.第2部分:在廢水中溴化物氟化物硝酸鹽亞硝酸鹽正磷酸鹽和硫酸鹽的測定
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