The results showed that the soil catalase and dehydrogenase activities, soil microbial biomass N and microbial biomass C were restrain somewhat by four acetanilide herbicides at the beginning of cultivation, but can recover soon.

研究表明久草九九视频，培養(yǎng)初期丁草胺欧美一级黄色精品、乙草胺、丙草胺和異丙甲草胺對土壤過氧化氫酶和脫氫酶活性亚洲国产二区三区久久、對土壤微生物量氮和微生物量碳有不同程度的抑制9色欧美骚国产，但均能很快恢復(fù)，四種供試酰胺類除草劑對土壤生態(tài)的影響不大AAAA三级片，除草劑之間也沒有表現(xiàn)出顯著差異涩涩涩涩涩涩；培養(yǎng)初期rac-異丙甲草胺和S-isomer高濃度處理均比常規(guī)用藥量處理對土壤酶、土壤BN和Bc的影響大。

Most vertebrate has 1~3 the Mx albumen isomer of the fixed position inside different cell, be located in surely commonly inside the nucleus or afterbirth is qualitative in.

大多數(shù)的脊椎動物有1~3個不同細胞內(nèi)定位的Mx蛋白異構(gòu)體成年人网站在线视频，一般定位于核內(nèi)或胞質(zhì)中想看一级片在哪里看。

At the same time, the channel framework formed by hosts could recognize p -anisaldehyde and form exceptive structural inclusion compound at a molar ratio of 2∶1, which is a supramolecular isomer of inclusion compound at a molar ratio of 1∶2.

同時， 主體分子形成的隧道框架對茴香醛具有識別作用亚洲天堂伊人网，形成2∶1物質(zhì)的量比的特殊結(jié)構(gòu)包結(jié)物晶體黄片一区二区三级，它是主客體分子物質(zhì)的量比為1∶2包結(jié)物的超分子異構(gòu)體。

The appearance of-enantiomer after incubation with single-enantiomer revealed the enantiomeric inversion of-isomer to its antipode. While no obvious stereoselective degradation or enantiomeric inversion were observed in other test soils.

左右旋對映體在3~#土壤中的降解速率有明顯差異日本人人射，二者半衰期相差0.95周；添加外消旋體培養(yǎng)6周后ER值達到1.65a级免费视频在线，表明左旋體被優(yōu)先降解国产午夜精品久久久久免费视；同時在該土壤中存在左旋體向右旋體的轉(zhuǎn)化現(xiàn)象；在其他幾個土壤中均未有明顯的選擇性降解或?qū)τ丑w轉(zhuǎn)化現(xiàn)象久久/99视频。

The self-erasure happens because the new isomer of azobenzene is not as stable as the old one.

自動清潔現(xiàn)象的發(fā)生是由于偶氮苯得異構(gòu)體遠不如其本體穩(wěn)定AAAA激情影片激情影院。

These two oils each contain limonene and carvone, but each oil contains a different isomer of these chiral compounds.

這兩種精油各自都含有檸檬烯和香芹酮，但每種精油都是由具有不同手性的檸檬烯和香芹酮的異構(gòu)體所組成的日韩超清一区二区不卡，在這個實驗課中久久精品全国免费观看AV，學生會接觸到真空蒸餾操作。

A structural isomer of citral that is obtained from the oxidation of geraniol.

黃烷醇氧化時發(fā)生的氨基酸降解国产91第三页，產(chǎn)生了紅茶香氣中的醛類物質(zhì)www.99热.com。

A structural isomer of citral that is obtained from the oxidation of nerol and is used to make perfumes and flavorings.

橙花醛檸檬醛的同分異構(gòu)體，橙花醇氧化可得精品精油按摩毛片，用于制造香水和香料

lifetime of isomer, high charge state, electron energy level, electron density

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These results show that the dual fluorescence of 4-AHBO (5-AHBO) is produced by its different tautomers, hut not by the same isomer: the long wavelength emission is from the keto tautomer, and the short wavelength band is produced by four kinds of enol isomers.

結(jié)果表明，4-AHBO(5-AHBO)的雙熒光不是由同一種異構(gòu)體發(fā)射的二级婬片高清视频一，而是來源于不同異構(gòu)體的發(fā)射：長波區(qū)的熒光由酮式構(gòu)型發(fā)射欧美男女性爱视频网站，短波區(qū)的發(fā)射則可能由四種醇式異構(gòu)體共同產(chǎn)生。