主要产物

The most effective stage in which LAI,LADand NAR had effects on grain yield was in about 15 days after silking stage. Relations of yield components and photosynthetic characteristics were also analysed.

在产量构成三要素中，单位面积穗数与拔节至吐丝期间的叶面积系数关系最为密切；穗粒数和千粒重则主要依赖于大喇叭口期或吐丝期以后的同化产物积累。

The similar nicotinoyltrifluoroacetones are synthesized from acetylpyridine and ethyl trifluoroacetate through Claisen reaction.The influnences of alcoholic natrium,reaction temperature and solvent on reaction yield is studied.The subliming method is improved.

本文以乙酰吡啶和三氟乙酸乙酯为主要原料，利用克莱森酯缩合反应，合成了三种相似结构的吡啶甲酰三氟丙酮化合物，考察了碱性试剂醇钠、反应温度和溶剂等因素对反应产率的影响，改进了纯化产物的方法。

D-Pantothenyl alcohol, also called ortho-vitamin 85, is an important nutrition suppled substance. It has been widely applied in the field such as medicine, cosmetic, foodstuff, feed additive, and so on. The preparation of D-pantothenyl alcohol and the optimization of key factor are discussed mainly in this paper. It mainly includes three section.In the first section, with formaldehyde, isobutyl aldehyde and diethyl oxalate as the starting materials, D-pantolactone is prepared via three steps including condensation, catalytic hydrogenation and physical resolution. The specific rotatory power of the product is consistent with imported product.

D-泛醇，俗称原维生素B_5，属维生素B旋类营养增补剂，广泛应用于医药、化妆品、食品、饲料等领域，本文着重探讨了其制备及关键因素的优化，主要内容可分三部分：第一是D-泛内酯的制备，先以甲醛、异丁醛和草酸二乙酯为起始原料合成酮基泛内酯，再经催化氢化得到DL-泛内酯，然后通过物理拆分获得D-泛内酯，得到产物的比旋光度与进口产品基本一致。

HD 189733b's atmosphere swelters at 900 degrees C, about the same temperature as the melting point of silver.

甲烷由碳和氢构成，是天然气的主要成分，也是一种油气产物。

Positive staining of oxytocin and vasopressin were in the cytosol of the neurons and the former gave less intensity,many positive varicosities for vasopressin were also noticed in neurite.

催产素的免疫阳性产物主要在细胞核周围的胞浆即核周质内，而加压素的免疫阳性物质除了在核周质内有很强的反应外，在突起内也可见很强的免疫反应。

The synthesis of alkylcyclohexylbenzoic acid: take the synthesis of ethylcyclohexylbenzoic acid as a typical example. With the AlCl3 as the catalyst, cis+trans acetylcyclohexylbenzene is synthesized from the reaction of acetyl chloride, cyclohexene and benzene.

烷基环己基苯甲酸的合成研究：主要研究了乙基环己基苯甲酸的合成，以乙酰氯、环己烯、苯为原料，三氯化铝为催化剂，合成乙酰基环己基苯，用水合肼、氢氧化钾、一缩二乙二醇经过高温加热还原羰基(Wolff-黄鸣龙还原)，将所得到的乙基环己基苯用乙酰氯进行傅克酰基化得到乙基环己基苯乙酮，所得中间体经过处理之后直接得到反式产物，将反式异构体的乙酰基氧化得到反式烷基环己基苯甲酸。

The main reasons were that the algae and organism in the water decreased the ability of removing pollutants by coagulations, the algae which grown again in the open sedimentation tank weakened the removal effect of algae by coagulation; because of the accumulation of algae and algae toxin in the filtration tank, the concentration of algae toxin in the effluent increased; by the function of fluid chlorine, the algae and organisms after the filtration will release microalgae toxin and produce a lot of byproduct such as microalgae toxin, sobomyl and so on, meanwhile, the chlorination produce considerable halide and halo-acetic acid and other disinfection byproduct.

主要表现在藻类和溶解性有机物的存在降低了混凝去除污染物的能力；藻类在露天平流沉淀池中再生长，抵消了混凝除藻效果；藻类和藻毒素在滤池中积累，导致滤后藻毒素升高；穿透滤池的藻类和有机物在液氯作用下，释放微囊藻毒素、土臭素和二甲基异冰片等胞内物质，同时生成数量可观的卤代烃和卤乙酸等消毒副产物。

Firstly, headspace solid-phase microextraction was established to determine AITC by orthogonal design. Extraction temperature, stir speed, extraction time, and desorption time were set at 40℃, 900r/min, 30min, and 5min, respectively. Under these optimal conditions, volatile flavor compounds in mustard oil, wasabi, and 'Chongcai'leaf mustard product were identified by SPME/GC/MS. In these three samples, 6,12,17 constituents were identified respectively; Allyl isothiocyanate was the main flavor compound, which accounted for 73.45%, 64.25%, 32.74% of total volatile compounds, respectively. Carbon disulfide, a hydrolysis product of AITC, accounted for 14.37% 25.40%, 51.67% of total volatile compounds respectively. There were some other isothiocycannates, such as butane, 1-isothiocyanato-, isobutyl isothiocyanate, 1-benzene, 4-isothiocyanato-, benzene (2-isothiocyanatoethyl)-, etc.

首先采用正交实验设计优化固相微萃取技术的前处理条件，结果表明，以萃取温度40℃、搅拌速度900r／min、萃取时间30min、解吸时间5min为最佳条件；在此最优条件基础上，利用SPME／GC／MS联用技术分析芥末油、青芥辣、冲菜的挥发性风味成分，分别检出6、12、17种化合物，主要风味物质均为AITC，相对丰度分别为73.45％、64.25％、32.74％；AITC的水解产物二硫化碳的相对丰度分别为14.37％、25.40％、51.67％；还检测到了其它几种异硫氰酸酯，如异硫氰酸丁酯、异硫氰酸异丁酯、异硫氰酸丁烯酯、2-苯乙基异硫氰酸酯等。

But its return to original state product is mainly the ammonia nitrogen, but is not the ideal nitrogen.

但其还原产物主要是氨氮，而不是理想的氮气。

Based on the research done by previous scholars, the article dwellsupon the following aspects, with the main thread of the development ofXuantian Heaven Emperor belief: probe into the origin of XuantianHeaven Emperor belief and points out Xuantian Heaven Emperor belief isa product of celestial body worship, animal worship and water worship;discuss the relationship between the Xuantian Heaven Emperor belief andpolitics in the Ming Dynasty and points out the flourishing of XuantianHeaven Emperor belief in the Ming Dynasty results from the promotion bytheir rulers, esp, Emperor Ming Cheng Zhu; probe into the relationshipbetween Xuantian Heaven Emperor belief and civil secret society andtouch upon the influnce of Xuantian Heaven Emperor belief in civil secretsociety; discuss the relation between Xuantian Heaven Emperor belief andliterature and formatire arts, as well as elaborate the mutual influencebetween Xuantian Heaven Emperor belief and formatire arts.

本文在前人研究成果的基础上，以玄天上帝信仰的历史发展为主线，主要探讨了以下几个方面的内容：玄天上帝信仰的由来，指出玄天上帝信仰是天体崇拜、动物崇拜和水崇拜的产物；明代玄天上帝信仰与政治的关系，认为明代玄天上帝信仰之所以兴盛的原因在于明代统治者，特别是明成祖对玄天上帝的推崇；玄天上帝信仰与民间秘密社会的关系，初步探讨了玄天上帝信仰在民间秘密社会中的影响力；玄天上帝信仰与文学、造型艺术的关系，从文学与造型艺术两个方面，阐明玄天上帝信仰与文学、造型艺术之间存在着互动影响的关系。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。