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- Assume the geometry of the eclipsed form to be that given by rigidly rotating one methyl group with respect to the other. 假定重疊式的幾何形是由一個甲基相對另一個甲基做剛體轉動而得。
- The methyl group carbon atom has 6 valence electrons from its bonds to the hydrogen atoms because carbon is more electronegative than hydrogen. 由於碳電負性高於氫,因此甲基中的碳原子具有6個價電子。
- By adding a methyl group at a critical point, they made a new compound named WBZ_4 that inhibited KIT kinases - but not those from the ABL family. 加入甲基組在一個臨界點,他們取得了新的化合物,命名為wbz_4這一抑制激酶試劑盒-而不是那些從a bl的家庭。
- An organic compound,especially ethane,containing two methyl groups. 雙甲基的,乙烷一種有機化合物,特別是乙烷,內含有兩個甲基
- The other, called L-methionine, is a donor of methyl groups. 另一個是L-甲硫氨酸,它可以提供甲基。
- Conclusion Introducing the methyl group or a low alkyl group resulting in the high selectivity and increase of its activity. 結論甲基或低級烷基的引入導致了高選擇性,使其活性增大。
- An organic compound, especially ethane, containing two methyl groups. 雙甲基的,乙烷一種有機化合物,特別是乙烷,內含有兩個甲基
- It may be synthesized directly from ammonia, carbon dioxide, and a donated methyl group; derived from serine; or derived from glycerate 3-phosphate by TRANSAMINATION of glyoxylate. 甘氨酸來源於絲氨酸,或由乙醛酸經轉氨作用生成的甘油3-磷酸轉化而成。
- From these 13C NMR spectra, we have calculated the ratios of each functional group to methyl group, which agree with the results obtained by 1H NMR quite well, and the mole percentage of saturated and unsaturated fatty acid glycerides in the two oils . 並計算出,上述兩種油中所含脂肪酸甘油酯和各種不飽和脂肪酸甘油酯的克分子百分數。 對測得CCH_2C基團質子自旋晶格弛豫時間T_1進行分析后,給出一經驗公式來予以擬合,計算結果與測定值吻合。
- Scientists have already found out how the methyl groups are attached. The reverse process of demethylation, however, has been poorly understood so far. 科學家們已經發現甲基團是如何被黏附的了,但是對逆轉的去甲基化過程卻知之甚少。
- Su(ar)3-9 proteins attach methyl groups to the histone labeled H3 at its ninth amino acid residue, which is a lysine. 9蛋白將甲基加在組蛋白H3的第九位氨基酸殘基,也就是賴氨酸殘基上,從而使H3組蛋白貼上了個標籤。
- Genes are imprinted by the addition of molecules called methyl groups to the gene's DNA. 基因印跡是通過在基因的DNA上鏈接附加的甲基團(一種分子的名稱)達成的。
- They found that a day after the shock, methyl groups were being removed from a gene called calcineurin and added to another gene. 他們發現老鼠在遭受電擊一天之後,神經鈣蛋白基因中的甲基群就被轉移到了其它的基因中去。
- Scientists hae already found out how the methyl groups are attached. The reerse process of demethylation, howeer, has been poorly understood so far. 科學家們已經發現甲基團是如何被黏附的了,但是對逆轉的去甲基化過程卻知之甚少。
- Miller and Sweatt argue that in neurons, methyl groups also help to control the exact pattern of protein expression needed to maintain the synapses that make up memories. 米勒和斯威特稱,在神經細胞中,甲基群也能夠控制蛋白質對信息的傳遞,從而使得構成記憶的神經突觸得以保存。
- Education should not be restricted to any one specific age group. 教育不應限制在任何特定的年齡組上。
- The results show that steric hinderance effect of methyl groups in the poly-o-methylaniline is more prominent than induction effect and hyperconjugation. 結果表明,聚鄰甲苯胺中甲基的空間位阻效應遠大於誘導效應和超共軛效應。
- The synthese, influencing factors, propertyies and applications of four kinds of POSS containing phenyl, amino, epoxy and methyl groups are discussed respectively in this article. 主要介紹了苯基、氨基、環氧基和甲基等4種官能團取代籠型倍半硅氧烷的合成方法及影響因素、性能和應用前景。
- He broke away from that lawless group years ago. 他在幾年前脫離了那個非法團體。
- The group of barbaric soldiers killed many people. 那群野蠻的士兵殺了很多人。