得到
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Photoreactions of 8 with 15-19, on the other hand, furnished the corresponding [2+2] cyclobutane products and the annulation products together.
二氯马来酰亚胺(8)与15—19的光化反应中则分别得到相应[2+2]的环丁烷产物和增环产物,在与19的反应中,还得到由环丁烷产物脱氯化氢后得到的环丁烯开环的二烯产物。
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The bilinear form of BBM equation has known, so we can similiarly get the bilinear form of associated DGH equation, then we can get the bilinear form of DGH equation and 1-soliton by a approciate method.
BBM方程的双线性已知,通过恰当的设法可以类似得到关联DGH方程的双线性形式,即得到了DGH方程的双线性形式,并由此得到了DGH方程的1—孤子解。
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Comrade chang yuan town in GuoRuDe during work, closely regarding the development and implementation of farmers' income, around with their investment, scale, the management specialization, led by business market, the government and the four modernizations "award for a prize" measures, make the rural land to cultivation experts, industrial structure adjustment of rural effectively, Through establishing with beautiful environment, high quality service, the preferential policies for the main content of "three-excellent a prize" measures, effectively built DuGuBa industrial park, increase the investment, to second and third industry is rapidly developing, the transfer of rural surplus labor force is.
郭汝德同志在昌元镇工作期间,紧紧围绕发展和围绕农民增收,提出实施了以投资业主化、种养规模化、管理专业化、经营市场化,政府以奖代补的"四化一奖"措施,使农村土地向种田能手集中,农村产业结构得到有效调整;通过制定以优美环境、优质服务、优惠政策为主要内容的"三优一奖"措施,有效地建起了杜家坝工业园区,加大了招商引资力度,使二、三产业得到迅速发展,农村剩余劳动力得到了转移。
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Wastewater containing titanium pigment was treated by microfiltration membrane, Nanometer titanium can be purified and concentrated by use of microfiltration. Operational conditions were optimized and the model was built. Finally, the amount of wash water was reduced. Based on the above research, the whole set equipment was designed, which can meet the needs in a titanium industry with a capability of 500 ton per year. Backflush and automatic control were used in the equipment, which has been steadily run two years, has been widely adopted in titanium industry. The technology has been widely adopted in titanium industry.In the recent years, whole set equipment of ceramic membrane was increasingly used in the recovery of desired production from fermentation broth in China. A new membrane process integrated with pretreatment of flocculation or coagulation was exploited to recover Inosine. ZrO2 ceramic membrane was used in the work, and the average permeation flux could reach 150L/m2.h under pH value of 3, transmembrane pressure 0.1MPa, CFV 3m/s, and temperature higher than 70C. The recovery ratio of inosine is higher than traditional recovery method, although inosine degraded under acidic and high temperature condition.
实验表明,ZrO_2膜处理肌苷发酵液的合适条件为pH=3、操作压力为0.1MPa、膜面流速3m/s、温度大于70度,此时可以获得平均渗透通量150L/m~2h,但由于酸性条件、高温下肌苷降解,导致肌苷收率有所降低,但仍高于传统肌苷提取方法得到的收率;为进一步提高肌苷得率,缩短提取工序,实验研究了絮凝剂预处理发酵液,解决碱性条件下由于蛋白析出导致膜污染加重的问题,研究表明采用CaCl_2絮凝并调节pH=11,可以获得平均渗透通量为180L/m~2h,肌苷得率大于95%;比较了三种肌苷提取工艺得到的产品质量,采用预处理与陶瓷南京工业大学博士学位论文膜分离结合的除杂工艺得到的粗昔质量与陶瓷膜分离、离子交换及活性炭吸附工艺生产的粗普质量相当,均优于传统的提取工艺;设计了每小时处理12一巧吨肌普发酵液的陶瓷膜成套装置,采用部分内循环的方式降低设备的能耗,简化了肌昔提取方式,提高了产品的收率和得率,由于减少离子交换和活性炭吸附,使得工厂废水排放量降低30一40%,降低酸、碱用量,有利于环境保护。
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Methods 4-Hydroxy- benzonitrile was treated with sodium hydrogen sulfide and anhydrous magnesium chloride in dimethyl formamide to give thioamide, which was then directly cyclized with ethyl 2-chloroacetoacetate without separation to give ethyl 2-(4-hydroxyphenyl)-4-methylthiazole-5-carboxylate(2) in one-pot; then 2 was formylated with Duff reaction adopting hexamethylenetetramine in trifluoroacetic acid to give ethyl 2-(3-formyl-4-hydroxyphenyl)-4-methylthiazole-5-carboxylate(3); finally, the target compound was obtained by the treatment of 3 with hydroxylamine hydrochloride and sodium formate in formic acid.
采用"一勺烩"方法,以4-羟基苯甲腈为起始原料,首先与硫氢化钠和无水氯化镁在N,N-二甲基甲酰胺中反应,所得中间体不经分离,直接加入2-氯乙酰乙酸乙酯进行环合反应,得到2-(4-羟基)苯基-4-甲基-5-噻唑甲酸乙酯(2);然后通过六亚甲基四胺/三氟乙酸进行Duff反应,得到2-(3-甲酰基-4-羟基)苯基-4-甲基-5-噻唑甲酸乙酯(3);再经盐酸羟胺/甲酸/甲酸钠体系脱水得到目标化合物。
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After enriched by flash, benzoic acid-containing fraction was obtained below 210 ℃ and benzyl benzoate -fluorenone-containing fraction was between 220 and 260 ℃,then these fractions were separated by vacuum distillation respectively.
废料通过闪蒸,在210℃以下得到了富集苯甲酸馏分,在220—260℃之间得到了富集苯甲酸苄酯和芴酮馏分;之后对各馏分进行高真空减压精馏,得到了苯甲酸、苯甲酸苄酯和芴酮等产品,纯度分别可达95%,91%和92%。
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When the is 0.1mol/l, ratio / is 0 or 4, aged at 95250℃ for 24 hours, anatase and rutile TiO〓 particles are formed respectively; when the ratio / is between 0 and 4, mixture of anatase and rutile TiO〓 particles is formed, the high the temperature the more the rutile phase. When the / is 5, aged at below 200℃ for 24 hours, amorphous product is gained, aged at 250℃ for 24 hours, olive-like TiO〓 particles with brookite structure are formed.
Ti〓=0.1mol·L〓时,95~250℃陈化,/比为0时,得到金红石型TiO〓颗粒,/比为4时,得到锐钛型TiO〓颗粒;/比介于0~4,可得到金红石型与锐钛型混合二氧化钛颗粒,温度越高含金红石型成分越多;/比为5,200℃以下陈化,得无定型产物,250℃陈化得橄榄形单分散板钛矿型二氧化钛。
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It is to divide the flow units, and then calculate the single well controlled reserves regarding the flow unit as the calculating unit, finally, compare and analyze the results from this method, single well controlled area method and dynamic pressure drawdown method respectively. The comparison result proves the scientificity and practicability of the flow unit method.
最后与通过划分单井控制面积法计算得到的单井控制储量及通过动态储量计算方法计算得到的单井动储量进行对比分析,其结果论证了流动单元法计算单井控制储量的科学性和实用性,使流动单元的研究在低渗透气田油藏精细描述中得到了进一步的推广和应用。
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First, it was to obtain two binary images from segmenting image by two thresholds. Second, erosion, opening and closing were done to the two images according to some knowledge of the shape and location of the objects in the image that we have already known. Last, the edge information from the image segmented by a high threshold was put into the image segmented by a low threshold. It is the way to segment and discern circular objects accurately from the complex image and can greatly improve the accuracy rate of discerning.
首先分别根据两个阈值进行分割得到两幅二值图像,然后根据目标是圆形以及其大致位置等先验知识分别对两幅图进行腐蚀,开启,闭合等数学形态学运算,将高阈值分割得到的图像中的边界信息叠加到低阈值分割得到的图像中,实现对复杂背景图像中圆形物体的准确分割与提取,解决了复杂背景图像中物体识别率低的问题。
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According to the criterion of minimizing the sum of the squares of the states posterior confidence region widths, we get the value of the updated Biscay distribution, then get the states interval estimation.
该方法结合了区间运算和Kalman滤波方法,分别根据状态和观测方程得到的预测值的Biscay分布,融合得到估计的Biscay分布值,进而得到状态的区间估计。
- 推荐网络例句
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The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.
采用不同浓度K2CrO4(0,0.4,0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗,测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。
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By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.
通过分析数学形态学在图像中的理论基础,研究二值图像的形态分析算法,探讨最小结构元素的两种基本形态:膨胀和腐蚀;分析了数学形态学复杂算法的基本原理,把数学形态学的部分并行处理理念引入到家实际应用中。
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Have a good policy environment, real estate, secondary and tertiary markets can develop more rapidly and improved.
有一个良好的政策环境,房地产,二级和三级市场的发展更加迅速改善。