helix structure 中文意思是什麼
helix structure
解釋
螺旋結構-
The collagen in the serosa is made up of a triple helix molecular structure
絨毛膜上的膠原組成了三角形的落選分子結構。 -
Like calmodulin and troponin c, caltractin contains four potential calcium - binding sites of predicted helix - loop - helix or ef - hand structure. with the development of technology in biology, more and more academicians study questions for discussion by mutating genes in organisms
中心蛋白的結構類似於鈣調蛋白、肌鈣蛋白c的結構，含有四個ef - hand （ helix - loop - helix ）結構，即四個鈣結合位點。 -
The microscopic mechanism of the helix structure is one of the most important questions for cholesteric phase, from the general view, which is because there are chiral potential vx
膽甾相理論的一個核心問題是導致其螺旋性結構的微觀機制。一般認為這是由於分子之間存在手性作用勢v _ x 。 -
Based on it, a new kind of helix slow - wave structure named elliptical helix slow - wave structure used in helix traveling wave tubes has been detailedly investigated. by studying the rf characteristics of this slow - wave structure, it ’ s found that higher operation frequency and interaction impedance will be obtained by increasing the eccentricity of helix or decreasing it of the shield. meanwhile, great potential of improving system bandwidth has also been found if the eccentricity of helix or shield or the two are properly choosed
本文對近幾十年大功率行波管的研究進展進行了簡單討論，並在此基礎上研究了一種可應用於螺旋線行波管的新型的螺旋線慢波結構，即橢圓螺旋線慢波結構，通過對該螺旋線高頻特性進行詳細分析，我們初步認為，選擇適當的螺旋線和屏蔽筒離心率，可以提高系統工作頻率，增加系統耦合阻抗，並且具有改善系統帶寬的潛力。 -
Study of helix slow wave structure taking the radial thickness into account
考慮螺旋帶徑向厚度的螺旋線慢波系統的研究 -
Was released, which was confirmed by molecular mass and amino acid composition analysis. ultraviolet and circular dichroism spectra were used to test the secondary structure of - mt - 3. distinct from other - mt, - mt - 3 showed a negative trough at about 220nm in the cd spectrum, suggesting that an - helix might exist in its secondary structure
紫外吸收光譜及圓二色性光譜研究重組- mt - 3的結構。 mt - 3的與其餘mt的結構域不同， - mt - 3的圓二色性光譜在220nm左右為負峰，說明- mt - 3可能包含一個-螺旋的二級結構。 -
Hydrothermal synthesis and crystal structure of a novel double helix supermolecule npa en
的水熱合成與晶體結構 -
Huangyal4 was complete nucleotide sequence of 1 854 bp with a nucleotide orf ( 1575 bp ), which encoded a protein consisting of 524 aa with molecular weight of 62. 2 kda and pi of 8. 96. strongly basic ( + ) amino acids, strongly acidic ( - ) amino acids, hydrophobic amino acids and polar amino acids of the protein were 13. 74 %, 11. 64 %, 36. 45 % and 22. 70 % respectively, and predicted secondary structure of the protein revealed many conserved domains such as n - glycosylation site, protein kinase c phosphorylation site, casein kinase ii phosphorylation site, n - myristoylation site, camp - and cgmp - dependent protein kinase phosphorylation site, tyrosine kinase phosphorylation site and a cytochrome p450 cysteine heme - iron ligand signature which was typical of cytochrome p450. a - helix and b - sheet of the protein is 47. 7 %, 45. 0 % respectively
Huangya14 ）為材料分離克隆到一個細胞色素p450基因，命名為bccyp86mf5 ， cdna全長1854bp ，含1575bp的完整開放閱讀框，編碼524個氨基酸，其編碼蛋白質的分子量為61 . 2kda 、等電點為8 . 96 ；堿性氨基酸、酸性氨基酸、疏水氨基酸和極性氨基酸分別占總氨基酸的13 . 74 、 11 . 64 、 36 . 45和22 . 70 ；二級結構預測包括n -糖基化位點、依賴于camp和cgmp的蛋白激酶磷酸化位點、蛋白激酶c磷酸化位點、酪蛋白激酶磷酸化位點、酪氨基酸激酶磷酸化位點、 n -豆蔻酰化位點和細胞色素p450的典型區域，半胱氨酸亞鐵血紅素配體信號區等， -螺旋和-折疊分別佔47 . 7 、 45 . 0 ；與bccyp86mf1基因的氨基酸序列同源性達到95 . 2 ，與擬南芥cyp86c4的達到85 . 9 。 -
Based on the experiences of the developed countries and the th theory brought forward by the forthgoers, the main contributing conclusion of the dissertation includes : firstly, it elaborates the inner structure and the pedigree within the th of university - industry - government. secondly, it points out the disfigurements and flaws in chinese university - industry - government relationship and then puts forward the mission and countermeasures to cope with these problems. last by not least, it finishes a quantitative analysis of chinese th model with the scientometric, the webometric and the triple helix algorithm and then according to the arithmetic result, it compares the chinese th with some other typical countries " and finally draws some valuable conclusions
結合發達國家區域的實踐經驗與前人已有的理論工作，本文深入研究了網路時代的三方合作主題，主要貢獻有：給出大學?產業?政府三重螺旋體的內部結構和圖式譜系；指出國內「產學研」缺陷與紕漏，明晰了「官產學」的應對與使命；最後運用th演算法和科學計量、網路計量手段實現了一個有關中國三重螺旋模型的定量分析，並與其他典型的國家地區三重螺旋作出比較，得到若干有價值的結論。 -
The wind rates of roots blower with these various kinds of three - lobe circular arc rotor are calculated and comparison between their performances is carried out. it is found that three - lobe rotor with external - internal circular arc and cycloid can produce the largest air volume. comparing the air pulsation produced by cylinder rotor and helix rotor, and proof that the structure of helix rotor can reduce the noise of roots blower
本文給出了羅茨鼓風機三種不同的圓弧轉子型線的參數方程（外圓弧及其包絡線型、內圓弧及其包絡線型、和內外圓弧加擺線型） ，還給出了這三種轉子的徑距比（ r _ a a ）的極值，並進行比較，得到：內外圓弧加擺線線型是最優線型這一結論；為降低羅茨風機的噪聲，將傳統的直葉轉子改成扭葉轉子。 -
Mri scanning, developed in this very building ; the contraceptive pill ; modern infertility treatment ; ultrasound scan for unborn babies ; unlocking the double helix structure of dna ; keyhole surgery ; placing fluoride in the water supply ; the portable defibrillator ; the hepatitis b vaccine ; strained quantum - well lasers which contain the information used in cds, dvds and the internet ; dna fingerprinting. a whole speech could be given that amounted to nothing more than a list of examples
正是在牛津這個地方研究和開發出來的核磁共振掃描、避孕藥、現代不孕癥治療術、胎兒超聲波檢查、解開dna雙螺旋結構之謎、鎖孔外科手術、在供水系統中加氟、便攜式心臟除顫器、乙肝疫苗、在cd 、 dvd光盤上存儲信息的應變量子阱激光器、 dna指紋識別技術等。 -
It ' s the fiftieth anniversary of the discovery by francis crick and james watson of the double helix structure of the dna molecule
它離弗朗西斯?克里克和吉米?沃森發現dna分子雙螺旋結構整整五十周年。 -
This paper presents the study on assembly method, material and structure of the dielectric for improving the heat dissipating performance of slow - wave structures of the helix twt
摘要綜合敘述了目前人們為提高螺旋線行波管慢波組件的散熱性能而在裝配方法、組件材料以及夾持桿的結構這三方面所進行的研究。 -
Dna molecular biology technique is a method occurring recently to encode information by simulating the double helix structure of dna and the watson - crick complementary condition
Dna分子生物技術，這是一個最新發展起來的以模擬分子生物dna的雙螺旋結構和堿基互補配對規律進行信息編碼的方法和技術。 -
Alpha helix a highly stable structure in which peptide chains are coiled to form a spiral
螺旋：蛋白質多肽鏈本身的折疊和盤繞的方式。 -
Effect of pressed helix in helical slow - wave structure on twt cold - test characteristics
螺旋線徑向擠壓變形對其慢波結構冷測特性的影響 -
A new squeezing method to assemble helix - type slow - wave structure for twts
用於行波管螺旋慢波組件的擠壓新方法 -
Simulation and optimization of helix slow - wave structure for x - band 40 w high efficiency traveling - wave tubes
通過對拋光后金剛石膜表面的拉曼光譜 -
The relationship between structure and rotatory direction of 1, 2 - disubstituted ferrocene and its derivatives is analyzed based on the helix theory proposed by the authors
摘要根據筆者所提出的螺旋理論，對1 ， 2 -二取代二茂鐵及其衍生物的結構與旋光方向間的關系進行了分析。 -
In this dissertation, each of the twt component building blocks, such as the electronic gun, slow - wave structure and the collector, is presented. the thermal theories and the thermal conduction ways of each subsystem are discussed. the author presents some advice on the fast working of twt, the optimization of helix - slow wave structure, and how to minimize the collector
本文論述了小型化行波管電子槍、慢波結構和收集極等部分產生熱的機理以及熱傳導過程，針對小型化行波管的啟動速度、改善和優化螺旋線慢波結構以及縮小收集極體積等方面的提出了改進建議與設計。
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