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Through the computer ,people obtain various knowledge, carry on amusement, get to know the friend, exchang news and idea, can even do shopping through Internet. Erenow they can only obtain information through newspaper and television etc.
人们通过计算机获取各种各样的知识,通过计算机进行娱乐,通过计算机结识朋友,通过计算机进行交流,甚至还能通过互联网购物,在此之前他们只能通过报纸,电视等途径获得信息。
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A process for preparingp-fluo-2-(2-methyl-3-propionyl)-4-oxy-N,3-diphenyl-phenylbutylamide includes such steps as Friedle-Craft acylating of newly prepared phenylacetyl chloride and fluorobenzene under catalysis of AlCl3 to obtain 4-fluoro-phenylbenzyl ketone, brominating at carbonyl alpha position under catalysis of less AlCl3 to obtain alpha-bromo-4-fluo-phenylbenzyl ketone, and condensing with isobutyryl acetanilide under action of sodium ethoxide.
本发明涉及一种制备对氟-2-(2-甲基-3-氧丙基)-4-氧-N,3-二苯基-苯丁酰胺(1)的方法,其包括以下步骤:新制的苯乙酰氯与氟苯在AlCl3催化下进行Friedle-Craft酰化反应,得到对4-氟-苯基苄基酮(4);化合物(4)在少量AlCl3催化下进行羰基α位溴化,得到α-溴-4-氟-苯基苄基酮(5);然后(3)异丁酰乙酰苯胺在乙醇钠作用下与化合物(5)进行缩合。
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The method comprises following steps: reacting hydroxylation carbon nano-tube successively with reagent containing halogen and hydrosulphide to prepare sulfhydryl carbon nano-tube; reflowing the sulfhydryl carbon nano-tube and platinum salts in polyatomic alcohol, processing in hydrogen atmpsphere to obtain sulfhydryl anchoring platinum / carbon nano-tube catalyst; reflowing the sulfhydryl carbon nano-tube successively with the hydrochloroauric acid and the platinum salts in polyatomic alcohol, processing in hydrogen atmpsphere to obtain sulfhydryl anchoring platinum-gold / carbon nano-tube catalyst.
本发明将市售羟基化碳纳米管先后与含卤试剂和氢硫化物反应得到巯基化碳纳米管。再将巯基化碳纳米管与铂盐在多元醇中回流,氢气氛中处理得到巯基锚固铂/碳纳米管催化剂。将巯基化碳纳米管依次与氯金酸和铂盐在多元醇中回流,氢气氛中处理得到巯基锚固铂-金/碳纳米管催化剂。
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The disclosed combined detection method for high-pure SO3 gas with SO2 as impurity comprises: constant-volume sampling at least 60Deg better 60-80Deg to avoid liquidation of SO3, absorbing with alkali solution to obtain total volume percentage concentration of high-pure SO3 gas and SO2; processing the absorbed liquid, using iodometric method to obtain SO2 volume percentage concentration and then the SO3 concentration.
一种高纯度SO 3 气体及其中杂质SO 2 气体浓度联合检测的方法,包括用吸收装置进行定容采样,然后用碱溶液吸收,得到高纯度SO 3 气体及其中杂质SO 2 气体的总体积百分浓度,再对吸收液进行处理后,采用直接碘量法测得SO 2 气体的体积百分浓度,将高纯度SO 3 气体及其中杂质SO 2 气体的总体积百分浓度减去SO 2 气体的体积百分浓度即为高纯度SO 3 气体浓度,其所述吸收装置进行定容采样时,是在至少60℃以上的热环境中进行的。
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Enterprises must innovate the marketing tactics and marketing way in order to meet knowledge type customer"s demands, Knowledge marketing has offered solved tools as innovative mode of marketing those enterprises in era of knowledge-driven economy, in the marketing system of knowledge, traditional 4Ps marketing association tactics also have been given the new meaning, formed the 4Is marketing association tactics (such as Individual product and service, Price Indenture, The Platform Bases onInternet, Knowledge Intercourse)that have already been realized and proved in practice, Except the innovation of marketing association, the way of knowledge marketing is innovating constantly too, Learning Marketing and Experience Marketing is two ways among them, They direct against three kinds of rare resources on the knowledged customer to design concrete marketing method, tool in order to obtain the knowledged customer"s attention and trust separately, Learning Marketing attracts the attention of the knowledged customer according to the knowledge learning and exchanging of enterprises" marketing employee, management employee and the whole society. Experience Marketing let knowledged customer participate in the course of the products or the service according to consumption experiencing, a kind of special marketing mode. Not only met the characteristic that the knowledged customer is fond of participation but also obtained the knowledge type customer"s trust.This article includes five chapters:Chapter one preface introduces such questions as writing background, original intention of the selected title and thinking frame in the writing course of this article and expounds the reason emphatically that how to choose knowledged customer to summarize the new customer group. Study is a way to obtain knowledge; knowledge is an achievement of study also includes the customer"s self- innovation, meanwhile, proves to the small difference between the customer and customer.Chapter two put forward the knowledged customer"s concept, defines the knowledge customer"s definition and analyze its intension and epitaxy, also discusses rare resources on the knowledged customer. This article defines the knowledged customer as those groups and individuals that utilize knowledge to guide one"s own consumption practice and constant study and carry on the knowledge innovation constantly, they have completely new traits different from the old customer, time
企业必须对营销策略和营销方式进行创新以满足知识型顾客的需求,知识营销作为知识经济时代企业的一种营销创新模式为我们提供了一个解决工具,在知识营销体系中,传统的4Ps营销组合也被赋予了新的意义,形成了4Is营销组合(即个性化的产品和服务Individual product and service、基于协商下的价格约定Price Indenture、基于网络的信息技术平台The Platform Bases on Internet、知识的交流Knowledge Intercourse),4Is营销组合已被越来越多的企业意识到并在企业的营销实践中得到了验证;除了营销组合的创新,知识营销的营销方式也在不断地创新,学习营销和体验营销便是其中两种方式,它们针对知识型顾客身上的三种稀缺性资源设计具体的营销方法、工具分别用以获取知识型顾客的注意力和信任度,其中学习营销通过企业内部营销人员、管理人员和企业外部全社会的知识学习、交流来吸引知识型顾客的注意;体验营销则通过消费体验这种特殊的方式让知识型顾客参与到产品或服务的过程
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If be opposite not carefully,this is meant vein sex is impotent try the cent vein leakage that is aimed at different type uses different operation kind to cannot obtain better curative effect, did not add discriminative land in the past alone ligate carries deep vein on the back to fail to obtain ideal curative effect also is at that time the inevitable result of people understanding superficial.
这就意味着如果不仔细对静脉性阳痿加以分型并针对不同类型的静脉漏采用不同的手术方式便不能取得较好疗效,过去不加区别地单独结扎背深静脉未能取得理想疗效也是当时人们认识浮浅的必然结果。
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Fujian philharmonic piano along obtain rigorous manufacturing process , master of Italy , Co., Ltd., merge western technology and intelligence of in the East, make , make new advances monobasic Philippines FELEOHE piano, come out , find a good sale in U.S.A., France , Taiwan and other places , obtain by product quality leading the China famous brand title taken place ensured ,, light industry of Chinese ,.
公元1993年,福建爱乐钢琴有限公司沿获意大利大师严谨的制造工艺,融合了西方的技术与东方的智慧,制造出了新一代的菲里奥FELEOHE钢琴,一经问世就远销到美国、法国、台湾等地,并获得由中国轻工业产品质量保障中的领发的中国著名品牌称号。
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The identification of the PWL model includes two steps. First, obtain the polyhedral partition of the regression space based on a new fuzzy G-K clustering technique. In each cluster, the nonconsecutive parts of the input and output data that correspond to one of the local linear sub-models can be used to obtain the system matrices.
放松了混杂PWL系统辨识对切换已知要求的限制,在子模型辨识的同时考虑基于模糊G-K聚类的多区域划分,使用本质不连续的测量数据辨识PWL状态空间模型,并将辨识得到的状态序列变换到统一的状态空间内。
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The process is carried out by rubbing into filament raw materials, digesting in plasticizing liquid of sodium hydrate and sodium silicate at 100-130degree for 1-2hrs to obtain plasticized raw material, high-speed agitating plasticized raw materials with non-metallic minerals, octadecanoic acid and silicon oil at 100-130degree for 15-45hrs, coating and drying to obtain the final product.
先用农用搓揉机直接搓揉成丝状物料,然后丝状物质在含氢氧化钠和硅酸钠的塑化液中于100~130℃下蒸煮1~2小时,得到塑化物料,最后将塑化物料同改性非金属矿粉、硬脂酸和硅油在100~130℃下高速搅拌15~45分钟进行包覆处理,干燥后便得到目标产物。
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Results Among 94 cases, 79 cases who were preoperatively diagnosed with unknown mediastinal mass or lymphadenopathy by chest Computer tomography did not obtain the pathological cell by bronchoscopy, sputum cytology or percutaneous pneumocentesis biopsy, by SCM, 74 cases obtained the pathological diagnosis, while the other 5 cases did not obtain the pathological diagnosis.
结果 其中79例CT显示不明原因的纵隔肿物或纵隔淋巴结肿大,且纤维支气管镜和痰脱落细胞学或经皮肺穿刺未找到病理细胞,纵隔镜检查后74例获得病理诊断,5例未获病理明确。
- 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。