The results indicated that the leaching of acid rain led to increasing of latent acid of soil in short time though amortizing of soil to acid precipitation.

許多研究認(rèn)為在线免费观看黄色视频的网站，人為酸化的因素主要有大氣污染引起的酸雨輸入 [2免费观看人成、3] 和施入氮肥引起的硝化作用 [4、5] 兩方面免费一级a毛片在线播放视频试看。

All the results above suggested that it was the cyclic electron transport but the xanthophyll cycle that play the key role in the photoprotection of the rice hybrids. The cyclic electron transport was enhanced under excessive light, thus more ATPs, which could be used for the repair of the damaged D1 protein, would be produced by cyclic phosphorylation.

這些實(shí)驗(yàn)結(jié)果首次闡明五月婷婷c，葉黃素循環(huán)的熱耗散在雜交稻的光保護(hù)中不起關(guān)鍵作用，而環(huán)式電子傳遞則對于雜交稻的光保護(hù)起至關(guān)重要的作用在线观看的免费的黄页网站，其機(jī)理可能在于強(qiáng)光條件下環(huán)式磷酸化的加劇生成大量ATP用于光破壞的修復(fù)作用美女频黄，同時(shí)避免類囊體膜的過度酸化，從而導(dǎo)致強(qiáng)光下qN的下降欧美日韩亚洲视频二区。

No dimorphic (sulfo-esterification and glucuronidization) metabolite of M1 and M2 was found in the biological specimens above from rats.

在以上大鼠生物樣品中未發(fā)現(xiàn)M1和M2的二相（硫酸酯化和葡萄糖醛酸化）代謝產(chǎn)物欧美又粗又大又长A片。

The research results obtained showed that, sulphonating extent of synthetic starch xanthate was high, under room temperature, time 120 minutes, mol ratio of starch, sodium hydroxide and disulphide being 10 : 4 : 3, It was to say that sulphur content and supplent extent were high.

研究結(jié)果表明抽a插%网站，原料配比為：淀粉：NaOH：CS_2為10：4：3，反應(yīng)溫度為室溫最新国产在线视频，黃化反應(yīng)時(shí)間為120min，合成DX的黃原酸化程度高AV字幕在线观看，即產(chǎn)品含硫量和取代度高jiuse200。

Organic pollution may cause dissolution and pyrite-stain of foraminiferal test. This can be attributed to the acid and reductive condition formed by over high organic content.

有機(jī)質(zhì)污染在有孔蟲特征上主要反映為殼體的溶蝕和黃鐵礦化，這是由于過量的有機(jī)質(zhì)導(dǎo)致介質(zhì)的酸化和還原條件丝袜日韩中文无码视频。

Based on the above experiments, the author studied the mixed metallic pillared and modified montmorillonites. The experimental result indicated that the microporous structure of Fe-Al-PLMs was affected by the changing of interlayer Fe-Al polymer with different Fe/Al ratio. But the presence of Al iron was helpful to incorporate Fe iron into interlayer of montmorillonites.. Introducing Zr helped Al-PLMs getting better larger spacing, thermal stability, surface area and pore volumes. Its successful to apply Zr-Al-PLMs to treat wastewater containing Cr iron. The experiment of modifying Al-PLMs by PVA showed that the order of adding starting materials (Al-pillaring solution, PVA, montmorillonite solution) was related to the property of Al-PLMs. The PVA as precursor was beneficial for Al to go into interlayer of the clay and to form larger basal spacing porous clay. The surface area and pore volumes of Al-PLMs increased mainly because of increasing the external surface area and mesoporous volumes after acid-activating. This conclusion confirmed that the microporous structure of pillaring clay depends upon the interlayer pillar.

實(shí)驗(yàn)結(jié)果表明：在Al-PLMs中引入Fe離子99爱国产，不同F(xiàn)e／Al比制得的Fe-Al-PLMs因?qū)娱g的Fe-Al聚合離子結(jié)構(gòu)不同而影響其微孔結(jié)構(gòu)，但羥基Al離子的存在有利于Fe離子進(jìn)入蒙脫石層間97人操人人插人人搞；在Al-PLMs中引入Zr離子国产精品久久无码AV片，有助于其層間距、比表面積人人操人人爽超碰、孔體積增大欧美性爱十四页，所得Zr-Al-PLMs應(yīng)用于含Cr廢水處理效果顯著；PVA改性后的Al-PLMs其物化性質(zhì)變化與鋁柱化劑www色五月、PVA溶液ww黄色片、蒙脫石溶液三者不同添加順序有關(guān)，說明PVA的前撐有利于Al進(jìn)入蒙脫石層間得到較大層間距的Al-PLMs美女被插高潮到爽；經(jīng)酸化處理得Al-acid-PLMs91绿帽人妻网站，其比表面積增大以外表面積為主，孔體積增大以中孔為主国产成年无码久久久久电影，這也證實(shí)了柱撐蒙脫石的微孔結(jié)構(gòu)取決于其層間的柱化物中文欧美一区电影在线看。

First, the geometry optimization for 1-phenyldibenzophosphole and triphenylphosphine were carried out using quantum chemical AM1 method.

用量子化學(xué)AM1方法優(yōu)化了1-苯基二苯并膦和三苯基膦的幾何構(gòu)型，比較了兩種化合物的電子結(jié)構(gòu)和空間結(jié)構(gòu)国产在线91播放精品，發(fā)現(xiàn)PDBP作為羰基合成銠膦催化劑的配體要優(yōu)于三苯基膦人妻无码系列专区69影院；系統(tǒng)研究了PDBP的合成方法，其最佳合成條件為：在無水無氧的條件下欧美性爱23TB，采用二乙胺鋰與溴化四苯基膦摩爾比為3911精品视频天天看，反應(yīng)溫度為22 ℃，反應(yīng)5 h一a级视频，反應(yīng)后酸化国产盗摄正在播放一区， pH值為1～2，產(chǎn)物收率可達(dá)到85％～88％A片免费视频网站入口。

Bezaldehyde was used as protective agent in first method.S-Epichloeohydrin was aminated and acidulated to give(2S)-1-Amino-3-chloro-propanol Salts.The acetylation of (2S)-1-Amino-3-chloro-propanol by acetic anhydride produced the intermediate-N-[2--3-chloropropyl]acetamide.And then at 20℃,in the presence of lithium tert-butoxide,benzyl 3-fluoro-4-morpholinophenyl carbamate react with-N-[2--3-chloropropyl]acetamide to give linezolid in total yield of 43.6%.

路線一采用苯甲醛作保護(hù)劑欧美一区二三区，使S-環(huán)氧氯丙烷氨解、酸化生成S-1-氨基-3-氯-2-丙醇鹽酸鹽黄色免费观看网站网址，然后經(jīng)乙醢纪够粕悠得夥压劭矗化反應(yīng)后日操av在线播放，生成中間體-N-[2-乙酰氧基-3-氯丙基]乙酰胺，再用N-(3-氟-4-嗎啉苯基)氨基甲酸芐酯和中間體在催化劑叔丁醇鋰存在下25℃反應(yīng)生成利奈唑酮人人摸人人摸操，總產(chǎn)率達(dá)到43.6%色交网站。

The selected process consists of several steps as follows. Firstly, ammonifying the oily mixture of PXA pyrolysis by ammonia or aqueous ammonia, then adding the organic solvent to extra

實(shí)驗(yàn)結(jié)果表明，合適的分離提純工藝為：先將裂解產(chǎn)物用氨水氨化无码一区二区久久免费、有機(jī)溶劑萃取www.久久cao，然后用硫酸酸化11-CUA銨鹽水溶液、再將粗品11-CUA于合適介質(zhì)中結(jié)晶人人干人人操美女，得到高純度11-CUA晶體黄色AV日韩在线播放网址；優(yōu)化工藝條件為：氨化pH值8.0～10.0、溫度25-35℃亚洲av色噜噜，甲苯為萃取劑www在线免费观看毛片，酸化pH值1.5～2.0、溫度55-60℃亚洲玖玖在线视频，環(huán)己烷為結(jié)晶介質(zhì)国内精品极品美女在线AAAA，粗品11-CUA在環(huán)己烷中溶解溫度50～55℃、與環(huán)己烷初始質(zhì)量比4：100美女任人插黄色视频、結(jié)晶前沉降分層時(shí)間10min369超碰在线观看、結(jié)晶溫度20℃。

In view of △F, the natural tendency of acidification as a result of aluminium transformation in red soils was further proved in thermodynamics, and the energy characteristics for exchange-adsorption of aluminum and potassium by calcium ion was revealed.

從熱力學(xué)角度進(jìn)一步論證了紅壤鋁質(zhì)化即酸化的自然趨勢欧美日韩人妻自拍，并揭示了鈣與鋁国产无码在线一区二区202、鉀離子交換吸附的能量特征。