N,N,N',N'-tetrabutyl-3-oxa-pentanediamide presents excellent extraction abilities for actinides elements. The effects of hydrolysis and radiation on extraction behavior of U with TBOPDA have been investigated.

N456小视频，N国产AV永久福利资源网站，N'国产很爽很舒服的视频，N'四丁基 3 氧戊二酰胺對錒系元素具有良好的萃取性能欧美性网，為了考察TBOPDA穩(wěn)定性野狼福利视频，研究了溫度大屌操屄视频、酸度和吸收劑量對TBOPDA萃取性能的影響。

Letφ:(Z_2)~k×M~n→M~n denote a smooth action of the group(Z_2)~k={T_1,…,T_k|T_i~2=1,T_iT_j=T_jT_i} on a closed n-dimensional manifold M~n.

設(shè)φ：(Z_2)~k×M~n→M~n是群(Z_2)~k={T_1男女晚上看的国产在线视频，…黄网站色视频免费观看下载，T_k|T_i~2=1，T_iT_j=T_jT_i}在n維光滑閉流形M~n上的作用外国黄色视频免费观看，群(Z_2)~k由k個可換對合生成人人爱人人摸人人干。

The inhibitive effect of 1, 2-benzenedicarboxylic acid on the absorption of N, P and K increased with its concentration rising. Low concentration of dibutyl phthalate increased the absorption of N, but decreased the absorption of P and K. Its high concentration restrained the absorption of N, P and K, while the low concentration of diphenylamine could stimulate the absorption of N and K, but restrain the absorption of P.

隨著鄰苯二甲酸濃度的增加，其對番茄幼苗根系吸收N内射美女处女视频、P男女无遮挡毛片视频免费播放、K的抑制作用增強(qiáng)；低濃度的鄰苯二甲酸二丁酯可以促進(jìn)番茄幼苗根系對N的吸收美女网站操视频，抑制對P超碰在线亚洲黄色、K的吸收，高濃度時對N一级a爱片在线观看视频免费、P国产精品床在线观看爽爽、K的吸收均起抑制作用；低濃度的二苯胺可以促進(jìn)番茄幼苗根系對Nwww.uuu26com、K的吸收一级国产黄色av，抑制對P的吸收。

The calculated results show that the most stable structures of C 5H 10NH(NH 3) n are one linear hydrogen-bonding, three-cyclic and four-cyclic structures for n=1, 2, 3, respectively. At MP2/6-31G//B3LYP/6-31G level, the MO population analysis of the most stable configurations C 5H 10NH(NH 3) n(n=1—3) has been employe...

在 MP2 /6 - 31G //B3LYP/6 - 31G水平下无码一区网站，對最穩(wěn)定構(gòu)型 C5 H10 NH( NH3) n ( n=1～ 3)的分子軌道進(jìn)行布居分析在线麻豆视频，并且對相應(yīng)的占據(jù)軌道進(jìn)行指認(rèn)。C5 H10 NH( NH3) n( n=1～ 3)垂直電離勢的計算結(jié)果表明精品激情，形成氫鍵團(tuán)簇后国产91大屁股熟女，分子的垂直電離勢降低。

The mass loss patterns of four type litters fitted exponential model, and the decomposition rate could be well predicted by their lignin/N ratio.

結(jié)果表明：與對照相比小视频色网址，降水量減少條件下久视频网无码性一区，蒙古櫟葉凋落物的初始N、P人人人操人人爽、K濃度顯著升高淫荡AV，初始木質(zhì)素濃度顯著降低，凋落物分解速率大黄色网站免费在线观看啊啊啊，N亚洲欧美另类中文字幕、P国产高清真人一级视频在线播放、K礦化率高，N和P固持時間縮短草草影院www色欧美极品；降水量增加情況下精品国产一区二区不卡毛，其凋落物初始N濃度顯著降低、木質(zhì)素濃度顯著升高黄色三级片地址91视频，N殴美性爱网址、P、K礦化率低簧网站在线观看网站永久，N和P固持時間延長欧美黑大粗硬。4種類型葉片凋落物的質(zhì)量損失過程均符合指數(shù)降解模型，分解速率可以由凋落物木質(zhì)素／N來預(yù)測三级A片想干就干。

The effects of the different N, P and K levels and several plant growth regulators on flowering of phalaenopsis were studied, the results showed:(1) N had a great effect on the formation of leaves, and there had more leaves in plant which had high content of N; P had a major effect on the differentiation of flower buds, it could promote the differentiation of flower bud through the application of phosphate fertilizer; K and N was effect on the elongation of flower stalk, and it had important influence on the length of flower stem.

研究了不同N6080理论三级国产在线观看、P、K水平和幾種植物生長調(diào)節(jié)劑對蝴蝶蘭開花的影響五级黄色毛片，結(jié)果表明：(1)N對葉片的形成有較大影響韩日妇女打一炮，含N高的植株葉片數(shù)較多；P在花芽分化中起主要作用美女a片网站，增施磷肥可促進(jìn)花芽分化一级A片破外女；K和N有利于花莖伸長，它們對花莖的生長有著重要影響日日精品视频在观线看网站。

The effects of the different N, P and K levels and several plant growth regulators on flowering of phalaenopsis were studied, the results showed:(1) N had a great effect on the formation of leaves, and there had more leaves in plant which had high content of N; P had a major effect on the differentiation of flower buding, it could promote the differentiation of flower bud through the application of phosphate fertilizer; K and N was effect on the elongation of flower stalk, and it had important influence on the length of flower stem..

研究了不同N色爽女人免费网站、P、K水平和幾種植物生長調(diào)節(jié)劑對蝴蝶蘭開花的影響自拍的黄片在线视频，結(jié)果表明：（1）N對葉片的形成有較大影響狼友视频网址最新版，含N高的植株葉片數(shù)較多；P在花芽分化中起主要作用亚洲日本色色，增施磷肥可促進(jìn)花芽分化欧美一级电；K和N有利于花莖伸長，它們對花莖的生長有著重要影響18成年女污禁网站免费观看。

Understand the basic conceptions on homolysis and heterolysis of covalent bonds, and on the nucleophilic substitution and elimination; Grasp the mechanism and stereochemistry of S N 1 and S N 2 reactions; be capable of judging the stability of carbocations; know the factors that can influence the rates of S N 1 and S N 2 reactions; grasp the elimination reactions of haloalkanes, the mechanism and stereochemistry of E1 and E2 reactions.

了解共價鍵的均裂和異裂及親核取代反應(yīng)的基本概念强奷漂亮的女教师2中文字幕；掌握 S N 1 和 S N 2 反應(yīng)機(jī)理和立體化學(xué)；能夠判斷正碳離子的穩(wěn)定性久久精品一级aaaa；了解影響 S N 1 和 S N 2 反應(yīng)速率的因素国产污视频；掌握鹵代烷消除反應(yīng)， E1 和 E2 反應(yīng)機(jī)理和立體化學(xué)86精品自拍。

The results show that the calculated cell parameters are in agreement with the experimental ones. The interactions between Li—N and Al—N are strong ionic bonds in Li3AlN2. The interaction between N and H is strong covalent bond and the interaction between Li and N is strong ionic bond in LiNH2. The calculated reaction enthalpies are 23.7 and 55.3 kJ/mol, respectively, which are in agreement with the experimental ones.

結(jié)果表明：Li3AlN2的Li—N免费看18禁止观看啪啪网站、Al—N鍵主要為離子鍵，LiNH2的N—H鍵主要為共價鍵，Li—N鍵主要為離子鍵国产美孰女乱又伦Av；298 K時貯氫反應(yīng)的反應(yīng)焓計算值分別為23.7和55.3 kJ/mol国产小呦，與實驗值均符合得較好；反應(yīng)中各固態(tài)肏屄免费视频、氣態(tài)物質(zhì)的晶胞的結(jié)構(gòu)優(yōu)化后的晶格常數(shù)一级特黄手机免费看片、鍵長與鍵角等與相應(yīng)的實驗值均符合較好。

Treatment of pterin (2-amino-4-hydroxy-pteridine) derivatives with N,N-dimethylformamide dimethylacetal [1,(CH 3) 2NCH(OCH 3) 2] usually gave corresponding N 2-(N,N-dimethylaminomethylene)- pterin derivatives in polar solvents.

用N AⅤ资源网影音先锋，N 二甲基甲酰胺縮二甲醇 [(CH3 ) 2 NCH(OCH3 ) 2 ，1]和蝶呤(2 氨基 4 羥基蝶啶)衍生物在極性有機(jī)溶劑中反應(yīng)一般得到脒化產(chǎn)物：N2 (N 国产欧美日韩另类VA在线，N 二甲基氨基亞甲基)-蝶呤衍生物第一页中文字幕。