Improving the Rationale Capture Capability of QFD

The goals of Design Rationale Capture (DRC) are improving design quality and reducing design time. These general goals have led to the design of many DRC techniques originating from research in various design and other related disciplines. However, little evidence about attaining these goals or about their usability or utility in practice has been demonstrated. To improve this situation, we use QFD tools to design a new DRC technique. QFD can be used to transform general needs into working products; its practical utility in improving design quality and reducing overall design time are widely recognised. In the course of using QFD, significant design knowledge is generated and recorded. Consequently, we picked QFD as a candidate DRC technique, and used QFD itself to improve its DRC proper-ties. The utility of QFD as a DRC tool is illustrated by using it to capture the rationale underlying its own design.     

Crossflow filtration testing of INEEL radioactive and non-radioactive waste slurries

Development of waste treatment processes for the remediation of radioactive wastes is currently under way at the Idaho Nuclear Technology and Engineering Center (INTEC), located at the Idaho National Engineering and Environmental Laboratory (INEEL). INTEC, formerly known as the Idaho Chemical Processing Plant, previously reprocessed nuclear fuel to retrieve fissionable uranium. Liquid waste raffinates resulting from reprocessing were solidified into a calcine material. Waste treatment processes currently being considered include the dissolution of the solidified calcine material and separation of residual undissolved solids (UDS). UDS in solution must be removed prior to downstream processes such as solvent extraction and ion exchange. Filtration experiments were conducted at the INEEL using a crossflow filter apparatus on radioactive and non-radioactive waste slurries [N.R. Mann, T.A. Todd, Evaluation and Testing of the Cells Units Crossflow Filter on INEEL Dissolved Calcine Slurries, INEEL/EXT-98-00749, Idaho National Engineering and Environmental Laboratory, Idaho Falls, ID, 1998]. The purpose of this testing was to evaluate the removal and operational efficiency of crossflow filtration on slurries of various solids loadings. The solids loadings tested were 0.19, 2.44 and 7.94 wt.%, respectively. A matrix of test patterns was used to determine the effects of transmembrane pressure and axial velocity on filtrate flux. Filtrate flux rates for each solids loading displayed a high dependence on transmembrane pressure, indicating that pressure filtration resistance limits filtrate flux. Filtrate flux rates for all solids loading displayed a negative dependency on axial velocity. This would suggest axial velocities tested were efficient at removing filter cake. Prior to testing of actual waste slurries, baseline water runs were performed. Filtrate flowrates observed during baseline water runs exhibited substantial decreases despite numerous backpulses and rinses, suggesting particles that were deeply embedded within the filter membrane as the result of shear-induced deagglomeration     

纯棉针织天鹅绒质量控制

针对纯棉针织天鹅绒常见的如纬斜、绒面质量、绒面手感、起毛起球等质量问题进行分析,结合生产经验,提出工艺方面的控制及改进.     

秦山三期核电站进口设备质量监督

介绍了在总承包商交钥匙合同模式下，业主在进口设备质量监督方面所开展的工作，以及从中得到的经验教训。     

HS-SPME coupled to GC/MS for quality control of Juniperus communis L. berries used for gin aromatization

HS-SPME coupled to GC/MS was applied to the analysis of the volatile fraction of Juniperus communis L. berries, which are the principal ingredient used for gin aromatization. Seventy seven compounds were identified by comparison with reference compounds or tentatively identified by comparing their mass spectra and retention index with those reported in mass spectra libraries and literature, respectively. Seventy four were detected by SPME and sixty eight were detected by solvent distillation extraction (SDE). These were mainly mono- and sesquiterpenic compounds that represented more than the 80% of the gin’s volatile composition. A high percent content was due to monoterpenoids, whose analysis could be important for the assessment of sensory quality control of juniper due to their impact on gin aroma. The main monoterpenoids detected in the headspace of the juniper berries from two periods of collection were terpinen-4-ol, p-cymene, β-myrcene, γ-terpinene, α-pinene and limonene. These represented more than the 70% of the sample’s volatile fraction. The proposed SPME method required short times and the low cost of analysis and enabled to detect a number of compounds comparable with SDE or much higher than the number of compounds reported by other extraction techniques. The results suggested the suitability of this technique for the assessment of the volatile composition of juniper berries intended for gin flavouring.     

如何在中专政治课教学中推进学生智育发展

总结中专政治课教学实验经验，指出在智育方面，应转变传统陈旧的教学模式，以记哪式为指导，运用发现法，灵活运用讲、议、说、练以培养学生创新思维能力，口头表达能力，自学能力，在德育方面，强调系统性、科学性、现实性以提高学生的思想素质，政治素质、首先品质素质。     

Structural changes in sardine (Sardina pilchardus) muscle during iced storage: Investigation by DRIFT spectroscopy

Diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy has been used for the first time to evaluate the postmortem changes in structure of components from sardine muscle in relation to quality loss. Sardines (Sardina pilchardus) were stored in ice for up to thirteen days. The spectroscopic study was focussed on the structural changes produced on the lipids and proteins.     

中国水利的发展方向

黄河下游发生断流的自然因素是降雨偏少、径流量偏枯，决定性因素是黄河流域用水量急剧增加，而直接原因是缺乏有效的管理。黄河上中游的治理造成下游主河槽萎缩，一旦上游发生暴雨，洪水漫流造成灾害。为了保证黄河水资源的可持续利用，必须强调在黄河流域和下游两岸建立节水型的社会并严格保护水源，防止污染。长江中游防洪工作中的重要矛盾是由于人口增长带来土地的过度开发，从而造成围湖和蓄洪的矛盾。今后应根据可持续发展的要求，将水利工作纳入我国人口、资源、环境的巨系统中，修订水利规划，提高用水效率，保护水源和生态环境，完善工程和非工程措施，组织多部门、多学科的协作攻关。     

磁场筛选机在选矿厂工业应用效果

阐述了磁场筛选机分选原理．分析了传统磁铁矿选矿工艺存在的问题．采用磁场筛选机对国内几家铁矿的应用效果说明，磁筛工艺对磁铁矿提质节能增效方面具有明显优势。