The deficiency of N or P in artificial seawater would lag the time of gametophyte formation and affect the differentiation ratio of female-male gametes.
人工海水中氮、磷营养盐的缺乏会导致海带配子体形成时间的滞后,并对其雌雄分化产生一定影响。
The Jiaodong event, which took place after formation of the Archaean Jiaodong Group, caused the first phase of N-S structures and syntectonic granulite facies metamorphism.
继太古代胶东群形成之后的胶东事件,在胶东群中造成了第一期的南北向构造和同构造麻粒岩相高级区域变质。
Three types of N? chloroacetyl substituted nitrogen? containing benzoheterocycles were introduced into pyrimidine by the formation of thioether.
三种n-氯乙酰取代的苯并含氮杂环化合物通过硫醚键的形成被导入嘧啶结构。
The catalyst is a twisted chair structure and reacts with borane at the N site of the catalyst to form catalyst borane adduct. The formation reaction is exothermic.
催化剂具有扭曲的椅式构型,与硼烷在N原子处配位形成加合物,反应是放热的。
The plant residue with more lignin has a higher humification coefficient. As the residue containing more N is more favorable to the formation of soil microaggregate.
其中含木素较多的植物残体,表现为腐殖化系数较高,含氮多的植物残体,则有利于土壤微团聚体的形成。
N. , Zhang, B. and Wang, S. , 1995, A mechanism for the formation of plasmoid-type CME in the solar corona, ACTA Astron. Sinica, 36 , 341.
郑惠南,张兵,王水, 1995,等离子体团型日冕物质抛射的形成机制,天文学报, 36 , 341。
The importance of the three endopeptidases contributing to the formation of AA-N was metallo-, cysteine, and serine peptidase in turn.
金属蛋白酶、半胱氨酸蛋白酶在游离氨基酸的形成过程中起主要作用,丝氨酸蛋白酶次之;
The compounds play a favourable role in the auxoaction for the bond formation of C-C and C-N.
将该肟膦化合物用作配体,可分别对C-C和C-N键的形成起到很好的促进作用。
These results showed that the formation of diatom resting spores was related not only with N concentration, but also with Si concentration.
这说明硅藻休眠孢子的形成不仅受氮浓度的影响,还与硅浓度有关。
Aspartic peptidase made little contribution on the formation of NH3-N and AA-N. degradation of protein into peptides was attributed to aspartic-and cysteine peptidases.
天冬氨酸蛋白酶在氨态氮和游离氨基酸的形成过程中,贡献率最小;在将蛋白水解成肽氮的过程中,天冬氨酸蛋白酶和半胱氨酸蛋白酶起到了主要作用。
Effect of sodium nitrite contents, cooking temperature and time on the formation of N-nitrosamine in cooked ham and study on the corresponding correlations... SUN Jing et al.
亚硝酸钠含量、煮制温度和时间对蒸煮火腿中亚硝胺形成量的影响及其相关性研究…孙敬等。
Photolysis of N-methoxyimidoyl bromides leads to formation of the corresponding nitriles without affecting functional groups sensitive to ordinary dehydrating and halogenating reagents, in high yield.
光解N-甲氧基偕溴代亚胺化合物以高产率获得相应的腈,并在转变过程中小影响对常见脱水剂和卤化剂敏感的官能团。
Results: in pure n, O-CMCS group (group a) there were a little of new bones formation with plenty fibrous tissues ingrowthed.
结果单纯n, O - CMCS组可见少量诱导成骨现象,但成骨作用不明显,并见大量纤维组织修复。
Discusses the mechanism and harmfulness of undesired formation of butyl ether by inter-molecular dehydration of n-butanol during DBP production. Preventive measures are also provided.
着重讨论了DBP(邻苯二甲酸二丁酯)生产过程中,丁醇分子间脱水生成丁醚的副反应机理及危害,并找出了预防副反应发生的措施。
In pure n, O-CMCS group (group a) there were a little of new bones formation with plenty fibrous tissues ingrowthed.
结果单纯n, O - CMCS组可见少量诱导成骨现象,但成骨作用不明显,并见大量纤维组织修复。
The consumption of caustic soda is mainly caused by formation of sodium hydrate aluminosilicate and it can be calculated from the ratio of N/S of red mud.
拜耳法生产氧化铝的过程中,碱耗的主要原因是因为有钠硅渣的生成,碱耗可以用赤泥钠硅比(N/S)表征。
The labor transition effect of FDI is negative at the first phase of dual economy and accelerates the formation of n-shape curve at the second phase of international trade.
FDI的劳动转移效应在二元经济的第一阶段是负的,第二阶段加快了n曲线的形成。
The formation of C-N, C-S is vital to the organic chemical reaction whose products are widely used in many aspects, such as chemical Industry, Medication and Biology.
C -N, C -S键的构成是有机化学反应中一个重要的组成部分,其产物在化工、医药、生物等许多方面都有着广泛的应用。
In this paper we investigate algebraic properties of the set of local formations which satisfy n, and for such formation we give the structure of minimal non group.
本文研究了满足条件N的局部群系集合的代数性质,同时对于这类群类,给出了极小非-群的结构。
From 1-phenyl-2-propylamine, selegiline hydrochloride, an anti-Parksins drug, was synthesized via N-methylation, enantiomer separation, N-alkylation and salt formation with an overall yield of 42.2%.
以1- 苯基- 2-丙胺为原料,经N- 甲基化、拆分、N-炔基化、成盐共4步反应合成盐酸司来吉兰,总收率为42。
From 1-phenyl-2-propylamine, selegiline hydrochloride, an anti-Parksins drug, was synthesized via N-methylation, enantiomer separation, N-alkylation and salt formation with an overall yield of 42.2%.
以1- 苯基- 2-丙胺为原料,经N- 甲基化、拆分、N-炔基化、成盐共4步反应合成盐酸司来吉兰,总收率为42。
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