丁酸

Soybean cultivar "Ludou 4" was inoculated with the AM fungus Glomus fasciculatus, soybean cyst nematode Heterodera glycines race 4 and the AM fungus plus SCN. A number of coefficients such as mycorrhizal colonization, SCN infection rate, activities of chitinase and PAL and transcripts of the genes Chibl(Chitinase b1) and PAL5 in soybean roots were assayed.

本研究系统分析了大豆(品种：'鲁豆4')接种AM真菌Glomusfasciculatum和胞囊线虫(SCN，Heterodera glycines)4号生理小种后各处理菌根和线虫侵染率、几丁质酶和苯丙氨酸解氨酶活性及几丁质酶基因Chib1和苯丙氨酸解氨酶基因PAL5转录物的动态变化。

With the material of propionic acid and isobutyl alcohol,the synthesis of isobutyl propionate by using solid Mo-Ni Catalyst to replace common vitriol is studied.

以丙酸和异丁醇为原料，以改性钼镍粉取代以往常用的硫酸作催化剂，进行了丙酸异丁酯的合成研究。

Using potassium bisulfate as the heterogeneous catalyst,isovaleric acid and n-butanol reacted to form flavor butyl isovalerate.

以异戊酸和正丁醇为原料，采用不溶于反应物系的硫酸氢钾为非均相催化剂合成了食用香料异戊酸丁酯。

The grafting of polycaprolcatone on starch by ring-opening polymerization of e -caprolactone was initiated from the starch hydroxyl functions in the presence of a catalyst such as stannous octoate Sn(0ct2, Dibutyltin dilaurate or titanium tetrabutoxide. The grafting ration could reach 16%. IR, X-ray diffraction and DSC were used to investigate the grafting-polymer.

在辛酸亚锡Sn(Oct_2、二月桂酸二丁基锡和钛酸丁酯等催化剂作用下，淀粉羟基引发己内酯单体进行配位聚合，淀粉接枝率可以达到16％，并通过红外光谱、X—ray衍射及DSC等测试手段对反应产物进行了表征。

Propargyl alcohol was protected by dihydrophran with the catalysis of PPTS ,and then reacted with Ethyl Mag bromide to prepare its corresponding Grignard reagent.

炔丙醇在 PPTS 催化下由二氢吡喃保护，与溴乙烷格氏试剂反应生成相应的格氏试剂，然后与氯甲酸甲酯反应得到羟基丁炔酸甲酯四氢吡喃醚，在 PPTS 催化下脱保护后进行甲磺酰化，由溴化钠进行溴取代后合成了4-溴-2-丁炔酸甲酯，总收率达53%。

Succinic acid is an important C4 platform chemical. Utilization of non-food biomass instead of starch for succinic acid production by fermentation does not threaten grain provisionment and can reduce the cost of substrate.

丁二酸是一种重要的碳四平台化合物，利用非粮生物质替代淀粉制备丁二酸可保证粮食安全并降低原料成本。

The encapsulated TiO〓 particles by polymer were obtained with soapless emulsion polymerization of methyl methacrylate in water in the presence of the pretreated TiO〓 particles.

一种是用偶联剂钛酸丁酯对亲水性TiO〓粒子进行预处理，钛酸丁酯与TiO〓表面羟基反应，交联到TiO〓粒子表面，使TiO〓粒子表面由亲水性转变为憎水性，改善无机粉体与有机单体的亲合性，再进行TiO〓存在下甲基丙烯酸甲酯的无皂乳液聚合，即可得到TiO〓-PMMA复合粒子：另一种方法是用表面活性剂对TiO〓进行预处理，再进行TiO〓粒子存在下甲基丙烯酸甲酯的无皂乳液聚合，TiO〓粒子表面可形成一层均匀的聚合物膜，提出了包覆机理，指出单体在无机粉体表面发生聚合的关键是预先在粒子表面形成聚合场所，即吸附一层表面活性剂。

Butyl p-hydroxybenzoate was synthesized from p-hydroxybenzoic acid and butanol with sulfoacid resin as catalyst. The optimum conditions were as follow: ratio of n-butanol, p-hydroxybenzoic acid and sulfonic acid resin was 0.25 mol ∶ 0.05 mol ∶ 1.5 g, refluxing for 5 h using water separator at the reflow reaction temperature.

摘 要：以对羟基苯甲酸和丁醇为原料，用磺酸树脂作催化剂，催化合成了尼泊金丁酯，优化反应条件为：n∶ n=5 ∶ 1，催化剂磺酸树脂的用量为对羟基苯甲酸质量的21%，反应温度为回流温度，反应时间为5 h。

Hydroesterification of tert-butyl alcohol with ethanol catalyzed by transition metal triphenylphosphine complexes were investigated in room temperature ionic liquids as reaction medium at 100-140℃ and 3-6MPa of CO.

首次在超强酸氯铝酸离子液体中实现了饱和烷烃的羰化反应。发现2，2，4-三甲基戊烷可直接与CO反应，产物叔丁基异丁基酮，叔丁基异丁烯基酮和3，3，5-三甲基环己酮。

Besides, n-butyl and sec-butyl tosylate that are difficult for oxidative addition can react with phenylmagnesium bromide to form corresponding cross-coupling products. Primary alkyl halide which contains β-hydrogen and is relatively hard to undergo the reaction , n-butyl chloride for instance, can react with aryl Grignard reagents in the presence of NiB alloy as well.

此外，难以进行氧化加成的对甲苯磺酸正丁酯和对甲苯磺酸仲丁酯可以与苯基溴化镁作用生成相应的交叉偶联产物；反应相对困难的含β-H的伯卤烷，如：正氯丁烷也可以在NiB催化下与芳基格氏试剂发生偶联。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。