Several transient compounds were synthesized by the homo- and heterogeneous reactions of reactive halogen compounds, In-situ ultraviolet photoelectron spectroscopy and photoionization mass spectroscopy as well as theoretical calculations were used to study their molecular structures, stability and molecular orbital properties, their electronic structures and geometric structures were obtained for the first time; Simultaneously, the electronic structure and thermal dissociation of acetyl peroxynitrate and trifluoroacetyl peroxynitrate which have great importance in the atmospheric chemistry were studied; The substituent effects of series of halopyridines and halothiophenes were studied by the ultraviolet photoelectron spectroscopy method for the first time. The atmospheric chemical reaction between peroxyacetyl radicals with IO radicals as well as the dissociation of the most stable isomer of CH3COIO3 were calculated by density functional theory, it was found that the CH3COOIO2 isomer may be act as a new reservoir of inorganic iodine in the stratosphere.

通過活性鹵素的系列均相與非均相化學反應合成了幾種瞬態(tài)物種欧美永久视频免费，采用原位紫外光電子能譜和光電離質(zhì)譜結合量子化學理論計算對化合物的分子結構精品愉拍自拍视频、穩(wěn)定性以及分子軌道特性進行了研究免费a片在线，首次獲得了這些物種的電子結構和幾何結構的信息卡通动漫亚洲图片；同時研究了大氣中有重要作用的乙酰過氧硝酸酯和三氟乙酰過氧硝酸酯的電子結構性質(zhì)及熱解過程男同啪啪视频；采用紫外光電子能譜手段首次研究了系列鹵代吡啶和噻吩的取代基效應少妇裸婬交视频；通過量子化學理論計算研究了乙酰基過氧自由基與IO自由基的大氣化學反應及其最穩(wěn)定異構體CH3COOIO2的解離久久久久国产精品电影AV，發(fā)現(xiàn)該物種可能是無機碘化合物在平流層中的儲庫物種999精品免费看国产。

Phosphorus compounds result from degradation of compounds such as nucleic acids and phospholipids and occur as inorganic phosphates,that is ,orthophosphate or polyphosphate,or organic phosphorus.

"含磷化合物是由象核酸及磷脂這樣的化合物的降解而產(chǎn)生的，并以無機磷酸鹽日韩系列在线精品视频免费观看网站，也就是正磷酸鹽或多磷酸鹽的形式存在国产片一级A片免费观看视频，或以有機磷的形式而存在"

The applications of oxime compounds in recent years to agriculture were reviewed according to different chemical structures. The developing trends and broad application prospects of oxime compounds were also introduced.

按照不同的生物活性和結構進行分類，對近年來肟類化合物在農(nóng)業(yè)中應用作了綜述亚洲日日日日，著重從分子合成和生物活性進行討論日韩制服无码视频网址大全，并對它的發(fā)展趨勢人人视频可以看毛片?、應用前景作了進一步展望。

Methods: Antineoplastic compounds were screened by bioassay-guided method with partitive extraction and multiple column chromatographies(Sephadex LH-20, ODS and preparative HPLC). Structures of active compounds were determined by high-resolution 2D NMR(600 MHz) and ESI-MS techniques.

通過分級萃取和多種硅膠柱層析（Sephadex LH-20凝膠過濾69pao强力打造永久免费、ODS反相層析和HPLC）追蹤分離抗癌活性成分综合网久；利用電噴霧離子質(zhì)譜和高分辨(600 MHz)核磁共振二維譜技術鑒定化合物的結構。

A total of 113 volatiles were detected in seven fruit wines, and 80 volatile compounds were identified by GC-MS. There were 49, 40, 49 and 51 kinds of volatile compounds identified in cider wine, lichee wine, pawpaw wine, and mulberry wine, respectively.

在4種果酒中共檢測出113種揮發(fā)性成分成年人黄色欧美，鑒定出80種日韩精品成人网页视频在线，在蘋果酒中49種，荔枝酒最新欧美精品wwwtestc、木瓜酒和桑椹酒中分別檢測出40種又长又粗黄色视频、49種、51種化合物白白视频在线。

Other compounds include the nitrides, exceptionally hard materials made from nitrogen and a metal; cyanides; azides, used in detonators and percussion cap s; and thousands of organic compounds containing nitrogen in functional groups or in a linear or ring structure.

其它的化合物包括氮化物操b校园高清无码，是由氮和金屬生成的異常堅硬的材料；氰化物黑人大战白妞系列AV；疊氮化物一级片操逼视频，用作引爆劑和雷管；還有數(shù)千種含氮的有機化合物午夜欧美一区二区，以功能團或者線性或環(huán)狀結構的形式存在99riAV.cn。

The paper reviews the characteristics of phenol compounds and the progress on modification of these compounds in recently years.

綜述了天然酚酸類化合物的性質(zhì)及近年來對其改性的新進展。

Results］Lots of active compounds such as phenyl and oxygen compounds were found.

結果］水楊梅根提取物中含有較多的苯基及含氧基等活性基團成分麻豆国产原创视频在线。

Results: Seventeen fatty acids compounds, three sterols and one phytol were identified from p. alatum Buch.-Ham., amounting to 67.22% of the total constituents, linolenic acid,linoleic acid and palmic acid were the main compounds.

結果：從頭狀蓼中分離鑒定了17個脂肪酸成分变态自拍日韩欧美在线观看网站视频，3個甾醇類成分和植醇，占色譜總出峰面積的67.22%三级黄免费视频网站，主要成分為亞麻酸四房播播综合在线，亞油酸和棕櫚酸。

The constituents of bulb of F. puqiensis were studied. Five steroid alkaloids were isolated. The plane structure and stereoscopic configuration of 4 compounds were elucidated. They are named as puqienine A (FP-33), puqienine B (FP-3), N-demethyl-puqietinone (〓 FP-34) and puqietinone (〓, FP-9). Puqienine A and N-demethyl-puqietinone are new compounds. Puqienine B is as same as FPQ-3 elucidated by Prof.

對F.puqiensis鱗莖化學成份進行了研究欧美视频黄页，分得5個甾體類生物堿成分，并采用 UV在看看的网址你懂的、IR人摸美女人人砬美女人人看、EI-MS、1D-NMR人人插人人操人人爽，HHCOSY毛片网站观看、CHCOSY、HMBC和X-RAY等光譜技術和理化常數(shù)測定亚洲午夜久久久，鑒定出4個化合物的平面結構和立體構型YY6080午夜福利理论中文，分別為蒲圻貝母堿甲（puqienineA，F(xiàn)P-33）欧美精品115、蒲圻貝母堿乙（puqienineB男人天堂无码专区，F(xiàn)P-3）欧美作爱在线网站视频、N-去甲蒲貝酮堿（N-demethyl-puqietinone，F(xiàn)P-34）和蒲貝酮堿（puqietinone久久婷丁香五月激情综合，F(xiàn)P-9）久久99视频久，其中蒲圻貝母堿甲和N-去甲蒲貝酮堿為新化合物。