考察
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The nickelous chloride both may use in to galvanize, and is prepares the galvanization chemical thionamic acid nickel the important raw material, lead is affects the electronickelling quality a important attribute, in the present industry 331 ion exchange resin deleading effect still could not arrive in the electronickelling the lead content standard, used pocket weak basicity resin XSC312 after the screening experiment determination to take from the nickelous chloride solution intermediate ion exchange except the micro lead resin, inspected the material fluid pH value, the contact duration in the ionic exchange column to the ionic exchange adsorption lead influence, has determined the resin adsorption capacity and inspected the resin analysis performance.
氯化镍既可用于电镀,又是制备电镀化学品氨基磺酸镍的重要原料,其中的铅是影响电镀镍质量的一个重要因素,现行工业中的331离子交换树脂除铅效果尚不能到电镀镍中铅含量标准,经过筛选试验确定采用大孔弱碱性树脂XSC312作为从氯化镍溶液中离子交换除微量铅树脂,在离子交换柱中考察了料液pH值、接触时间对离子交换吸附铅的影响,测出了树脂的吸附容量并考察了树脂的解析性能。
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President Kennedy sent Taylor and Rostow to inspect South Vietnam in October 1961. Taylor and Rostow received South Vietnamese active responses of building an independent country. Therefore, building an independent and noncommunist South Vietnam became the idealism for American Vietnam policy. The central thought of Taylor-Rostow Mission report focused on limited partnership, and this was the pragmatism of American Vietnam policy."Limited partnership" became the best reason to avoid sending American forces to Vietnam.
甘乃迪总统於一九六一年十月派遣泰勒与罗斯托前往南越考察,两人探知南越内部独立建国意愿,建立独立暨非共南越成为甘乃迪越南政策理想性目标,而两人考察报告的中心思想「有限夥伴关系」成为越南政策务实性方针,「有限夥伴关系」方针乃避免军事干预越南的最佳选择。
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Chitosan had been modified by polyacrylate sodium, glularaldehyde, and NaBH4, respectively, which afforded three kinds modified chitosan: polyacrylate sodium modified chitosan (CIS- PA4) chitosan bead and pentamethylene diamido crosslinked chitosan bead (CTSB- G- Hy). The adsorption properties of CTS-CTSB and CTSB-G-Hy were studied by L25(56) orthogonal experimental design. They show high adsorption activities for Pb2+ in solution. The highest removal efficiency of Pb2+ for CTS-PA4, CTSB and CTSB-G-Hy is 94%, 96% and 93%, respectively. The results showed the adsorption property of CTSB is the highest. The CTSB- G- Hy has good mechanical property, acid-resistance and alkali-resistance.
第二部分壳聚糖的改性及其对水溶液中铅离子的吸附性能研究以壳聚糖为原料制备了三种改性吸附剂——聚丙烯酸钠改性壳聚糖(CTS——PA_4)、珠状壳聚糖凝胶树脂和戊二氨交联珠状壳聚糖凝胶树脂,着重考察了CTSB—G—Hy的制备条件,并考察了三种吸附剂吸附6.3mg/L铅离子水溶液中铅的最佳使用条件,结果表明对CTS—PA_4而言当pb~(2+)溶液的pH在4~6.5之间,吸附剂用量为5g/L,吸附时间为1h时pb~(2+)去除率高于94%,CTS—PA_4可在酸性条件下使用,在碱性条件下依然有效但处理效果较差;CTSB对pb~(2+)具有很好的吸附能力吸附剂用量为5g/L,吸附时间为1h时处理效果极佳,pb~(2+)去除率高于96%;CTSB—G—Hy对pb~(2+)具有一定的吸附能力,吸附剂用量为3g/L,吸附时间为1.5h时处理效果最佳,Pb~(2+)去除率高于93%,而且CTSB—G—Hy的机械强度高,耐酸碱性强,可在较宽的pH范围内使用。
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Objective: To examine the applicability of Perfectionistic Self-Presentation Scale in Chinese college students, and its relationship with self-esteem.
目的:检验完美主义自我展示量表在我国大学生群体中的适用性,并考察其与自尊的关系。方法:返回翻译PSPS,对187名本科生进行初测;将结合初测反馈确定的PSPS正式版本与Frost多维完美主义量表和自尊量表一起在482名本科生中进行正式施测,检验信、效度等指标,并通过层级回归考察完美主义自我展示在控制完美主义特征后对自尊的增益贡献。
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In order to further improve the catalytic activity and investigate the influence of catalyst acidic properties on the catalytic activity, acid-treated montmorillonite and molecular sieve Hβwere modified by loading Lewis acid and protonic acid treatment.
为了进一步提高催化剂的催化活性和考察催化剂酸性质对催化剂活性的影响,对酸化蒙脱土和Hβ分子筛进行了改性处理并考察了它们改性后的催化活性。
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Through measuring the solubility,stability and hydrolyzation property,the effect of additives on the characteristics of concentrated aqueous reactive blue P-3R was investigated. The results showed that among the four kinds of organic solvents,N-methyl pyrrolidone was the best one and its optimum dosage 10%. Na_ 2 HPO_ 4 /NaH_ 2 PO_ 4 was a better buffer and its optimum dosage was 3%.
通过对液态染料溶解性、稳定性、耐水解程度等的测试,综合考察了添加剂的种类及用量对高浓度液态活性艳蓝P-3R性能的影响,结果表明在所考察的四种有机共溶剂中,N-甲基吡咯烷酮的效果最好,且其最佳用量为10%;缓冲溶液中Na2HPO4/NaH2PO4的效果较好,最佳用量为3%。
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Research on network supervision of public opinions from the theory of civil society perspective or the network supervision analysis of the civil society. Reasoningly explore the relationship, promoting the development of China's social structure and maturity.
从公民社会的理论来考察网络舆论监督或是从网络舆论监督的角度考察公民社会,理性审视二者的相互关系,有利于促进我国社会结构的发展和成熟。
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However, they will never yield to their wives but remail silent or smile away the quarrels.
所谓意料之外,在于历届考题考察中国的政治、经济和文化居多,曾经考察过老舍的自传和杨绛对于钱钟书的回忆,但是涉及把一个群体来作为话题还是首次。
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Meanwhile,we have observed the effect 3 ABSTRACT of different suspension aid on suspensions,made sure that PVP should be the suspension aid and detected the effects of different process of preparing suspensions,different batches,various concentrations of PVP and temperatures on the stability of suspensions by freezing-heating circulation test,observing samples under combient temperature and rheometry test.
同时,在纳米炭混悬液的制备和稳定性研究中,考察了不同助悬剂对混悬效果的影响,确定聚乙烯吡咯烷酮作为助悬剂,并考察了离心加速条件下制备混悬液工艺、批号、PVP浓度及温度等因素对混悬液稳定性的影响,进行了冷冻-加热循环实验、室温下留样观察实验及流变性实验。
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Transesterification between dimethyl sebacate and 1,2,2,6,6-pentamethyl-4-piperidinol was studied with tetraisopropyl orthotitanate ,lithium amide and di-n-octyltin oxide used separately as catalysts.
对癸二酸二甲酯与1,2,2,6,6-五甲基哌啶醇的酯交换反应进行了研究;分别考察了四异丙基钛酸酯、氨基锂、氧化二辛基锡3种催化剂的性能;采用氢核磁共振确定了产物的结构;考察了以四异丙基钛酸酯为催化剂时反应温度、反应时间、原料配比和催化剂用量对反应的影响。
- 推荐网络例句
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According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.
曝气设备的动力效率在叶轮转速为120rpm~150rpm时取得最大值,此时氧利用率和充氧能力也具有较高值。
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The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.
稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世,形体几无变化。
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When I was in school, the rabbi explained everythingin the Bible two different ways.
当我上学的时候,老师解释《圣经》用两种不同的方法。