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The invention provides an anhydrous hydrogen fluoride production process; reaction raw materials fluorite powder and sulfate are mixed by an external mixer and enter into a converter with jacket; hot air with the temperature of 350 DEG C to 600 DEG C is fed in the jacket; the fluorite powder and the sulfate have chemical reaction and produce hydrogen fluoride; the produced hydrogen fluoride enters into a scrubber from a furnace header to be washed; the washed hydrogen fluoride enters into an intermediate tank from a condenser, and then receives distillation and degasification to prepare the finished product anhydrous hydrogen fluoride; solid residue is emitted from a furnace tail.
本发明提供一种无水氟化氢生产工艺,反应原料萤石粉及硫酸经外混器混合后进入带有夹套的转炉,向夹套内通入350~600℃的热风,萤石粉和硫酸在发生化学反应生成氟化氢,生成的氟化氢气体由炉头进入洗涤塔进行洗涤,洗涤后的氟化氢由冷凝器进入中间槽,然后经过精馏、脱气制得成品无水氟化氢;固体残渣由炉尾排出。
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In the first part of the study, it was demonstrated that there was only 0.1% of PCV2 antigen-containing rate in PBL isolated from PCV2-free pigs and treated simultaneously with mitogen and PCV2. The results of both MTT assay and blastogenesis indicated that PCV2 could reduce the responsiveness of PBL to mitogen stimulation, but the results of survival and apoptotic rates indicated that PCV2 had no effects on the viability of PBL.
首先,在第一阶段实验中针对健康无PCV2带原的猪只进行测试,当同时对其PBL以致裂原刺激与PCV2攻毒处理后,其PBL中仅0.1%的细胞呈现PCV2抗原阳性;藉由MTT与blastogenesis分析,均显示PCV2可以降低PBL对於致裂原刺激的反应,然而PCV2对於PBL的存活率或细胞凋亡率则无显著影响。
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Influence of the concentration of Cr in the leachate and quantity of Pb(CH3COO)2 of Pb(NO3)2 on the reaction of synthesizing yellow chrome was also studied. Finally, according to the criterion and standard method in GB3184-82, some yellow chrome synthesized in the experiments was sampled and the concentration of PbCrO4 in these samples was determined. The following conclusion can be drawn from these experiments.
根据中华人民共和国国家标准GB3184-82中的规定铅铬黄颜料的技术质量指标和检测方法,测定了铬黄样品中铬酸铅含量的厂迄回【、矾士牢位论父泅仰yW盯皿'S川mS达标情况,结论如下:门)反应中重铬酸盐的浓度并不需要达到前人所提出的150~2509·L'的范围,在一定条件下低于此浓度时对铬黄生成反应并无不利影响。
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A steel bar is washed and dried, and then put into a glass pipe which is sealed to obtain stirring magneton; a mixed solvent of Gamma-methacrylate oxide propyl trimethoxy silane and methanol is prepared and added with an organic base to obtain a pre-bonding solvent; the stirring magneton is immerged into the pre-bounding solvent, and the outer surface of the glass pipe of the stirring magneton is bonded with a layer of silane substance with alkenyl; a reactive monomer mixture and a pore-forming agent mixed solvent are evenly mixed and then added into a container, the stirring magneton after the pre-bounding is put into the container which is sealed and then put into a water bath; after reaction, the container is removed, the stirring magneton coated with a polymer is taken out and put into a extractor and extracted by using a solvent; or the stir bar is immersed into the solvent till no impurity can be checked in the solvent, thereby obtaining the product.
将铁条清洗干燥,放入玻璃管内,密封得搅拌磁子;配制γ-甲基丙烯酸氧丙基三甲氧基硅烷与甲醇的混合溶液,加入有机碱得预键合溶液,将搅拌磁子浸入预键合溶液,在搅拌磁子的玻璃管外壁键合一层带烯基的硅烷化物质;将反应单体混合剂和致孔剂混合溶液混匀后倒入容器中,将预键合后的搅拌磁子放入容器,密封后置于水浴中,反应后除去容器,取出涂有聚合物的搅拌磁子,置于提取器中,以溶剂提取,或将搅拌棒置于溶剂中浸泡至溶剂中无杂质检出,得产物。
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Resultsthe ef fective rates of aripiprazole and risperidone were 92.1% and 89.5% respectively,which showed no significant difference. there were no severe side effect in bot h group, but the group were rate of some adverse effect including myotonia, akat hisia, menostasis and lactation in aripiprazole group were fewer then that in ri speridone group.
结果 阿立哌唑的有效率为92.1%,利培酮的有效率为89.5%,两组疗效差异无显著性。2种药物均无严重不良反应,阿立哌唑组的肌强直、静坐不能以及闭经、泌乳的安全性明显低于利培酮组。
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The results showed that hydrogen peroxide, silanols species and TiO〓 didn't have solvolysis activity of propylene oxide. While framework Al, coordinatively unsaturated Ti〓 ions as Lewis acid sites in the framework, Ti-OH and the five member ring active titanium species formed by TS-1, hydrogen peroxide and solvent can catalyze the solvolysis of propylene oxide.
研究结果表明:原料双氧水和TS-1沸石上的SiOH和TiO〓对环氧丙烷溶剂解反应无催化活性;而下列物种对环氧丙烷溶剂解反应具有催化活性:TS-1中的骨架铝,沸石骨架中配位不饱和的Ti〓形成的L酸中心,TS-1水解产生的钛羟基和由TS-1,双氧水和溶剂相互作用所生成的五元环中间活性钛物种。
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In this thesis, investigations focused on heteropoly acids-catalyzed C-C and C-N bond formation reactions and the synthesis of xanthenediones and acridinediones under thermal conditions are described.1.12-Phosphotungstic acid has been used as an efficient,eco-friendly,and air- and moisture-stable catalyst to promote the direct dehydrative substitution of the hydroxy group of benzylic and allylic alcohols with variousβ-dicarbonyl compounds.
本篇论文主要描述了杂多酸催化下的C-C和C-N键的生成,以及无溶剂直接加热下合成十氢氧杂蒽二酮和9-芳基十氢吖啶二酮。主要内容如下:1。在磷钨酸催化下,1,3-二羰基化合物与醇能够顺利偶合,脱除一分子的水,生成烷基化的1,3-二羰基化合物。反应在甲苯中进行时,二芳基甲醇能与各类1,3-二羰基化合物反应,成率很高;但对于1-苯乙醇,只能得到很低的产率。
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A fully ethoxy-terminated polymethylsilsesquioxane has been prepared via a dehydration ethanolysis reaction between absolute ethanol and an ordered ladder-like HO-Me-T, which improved long-term storage stability of HO-Me-T. Meanwhile, EtO-Me-T can still participate in the cross-linking reaction with hydroxy-terminated PDMS in the presence of catalyst.
利用含端羟基的LPS与无水乙醇之间的催化脱水反应合成了一种乙氧基为末端基团的活性梯形聚甲基倍半硅氧烷,有效地改善该类聚合物的长期稳定性;同时,该乙氧基封端聚合物仍然具有活性,可以代替常用的正硅酸乙酯与羟基硅油进行交联反应。
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objective to study the relationships between smoking,atherosclerosis and c-reactive protein.methods to detect the serum crp and serum lipid while in quiring the smoking status for278patients with cardio-vascular disease.then analyed the crp level among different groups.results crp level had significant difference between smoking and non-smoking groups,atherosclerosis and non-atherosclerosis groups;but it seems no relationˉship with high lipid.in differentsmoking amount groups,crp level had significant difference in atherosclerosis paˉtients,but no significant difference in non-atherosclerosis patients.conclusion smoking,high lipid and crp were all very good prognostic mark in atherogenesis.crp was a significant prognostic mark in atherosclerosis influenced by smoking.
目的 初步探讨c反应蛋白crp与吸烟和动脉粥样硬化三者之间的关系。方法通过对临床278例动脉粥样硬化和非动脉粥样硬化病人血清crp和血脂的检测及吸烟情况的调查,应用spss统计软件进行差异分析,比较不同组间crp水平。结果 crp在吸烟与不吸烟组、动脉粥样硬化和非动脉粥样硬化组差异有显著性。而在血脂正常组和高血脂组差异无显著性。在不同吸烟量组间:非动脉粥样硬化组间crp水平差异无显著性,而动脉粥样硬化组差异有极显著性。结论吸烟、血脂升高、crp升高是动脉粥样硬化较好的预示指标;在吸烟人群中crp升高者更易患动脉粥样硬化。
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The quantity of CD3+ cells in the EdNSC, AdNSC of cloning goattransplantation group and control group had no statistics difference(P>0.05) at acute and chronic period.Overall, in our study, We got the conclusions as follow: 1,The EdNSC, AdNSCof cloning goat and the AdNSC of the non-cloning goat were successful obtained;EdNSC growed faster than AdNSC in the same cell culture method. 2,The braincontusion and laceration model of cloning goats were successful established by freefalling of 50 gram of steel ball accelerate strike on the goat brain from 100cm height.3, EdNSC and AdNSC transplantation both had obvious therapeutic effect on braincontusion and laceration of cloning goats; The therapeutic effect of EdNSCtransplantation was better. 4, Allograft of stem cells has acute and chronicimmunological rejection and autografting of stem cells has no acute and chronicimmunological rejection.
在相同的条件下,EdNSC体外培养速度比成AdNSC快。2对羊脑上薛氏沟周围运动皮层区使用50g×100 cm力度作自由落体加速撞击,可产生观察指标明确且存活率高的羊脑挫裂伤模型,有望广泛用于神经干细胞移植及药物等治疗的实验研究。3胚胎神经干细胞及成体神经干细胞移植治疗脑挫裂伤后均有较明显的治疗效果;二者相比较而言胚胎神经干细胞稍好于成体神经干细胞。4中枢神经系统异体神经干细胞移植存在着明显的免疫排斥反应,而自体神经干细胞移植基本无免疫排斥反应
- 推荐网络例句
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However, as the name(read-only memory)implies, CD disks cannot be written onorchanged in any way.
然而,正如其名字所指出的那样,CD盘不能写,也不能用任何方式改变其内容。
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Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.
镀锌钢托盘多用于出口,替代木托盘,免薰蒸,符合欧盟、北美各国对出口货物包装材料的法令要求;喷涂钢托盘适用于重载上货架之用,托盘表面根据需要制作成平板状、波纹状及间隔形式,满足不同的使用要求。
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A single payment file can be uploaded from an ERP system to effect all pan-China RMB payments and overseas payments in all currencies.
付款指令文件可从您的 ERP 系统上传到我们的电子银行系统来只是国内及对海外各种币种付款。