金川水电站坝区主要断裂断层泥中石英碎砾表面SEM特征及断裂活动性

断层泥中石英碎砾表面形貌在水溶液的作用下会不断地发生变化,显然这种变化与溶蚀作用时间的长短及物化条件有关。因此,断层泥中石英碎砾表面显微溶蚀结构就反映了断层形成后至今所经历时间的相对长短。而断层活动时期是坝区活动性评价重要指标。在大型的地质工程中,查明断层的活动性对于工程稳定性评价尤为重要。对大渡河金川水电站坝区的断层泥中石英碎砾SEM结构特征研究分析表明,该区断层最新活动时期主要集中在新近纪末期,中-晚更新世有过微弱活动,晚更新世以来已无活动性。因此,该区未来地震地质灾害频度相对较低,比较适合大型工程的建设。     

鲜白酒糟提取液对Q235钢硫酸酸洗的缓蚀性能

为了综合利用白酒糟和开发新型绿色酸洗缓蚀剂,制取了鲜白酒糟提取液,采用失重法和电化学法研究了其作为硫酸酸洗缓蚀剂的缓蚀性能。结果表明：15g酒糟在300mL5％硫酸溶液中30℃静置浸泡6h,得到的提取液在5％硫酸介质中对Q235钢的缓蚀率最高;酒糟提取液在Q235钢表面的吸附符合E1-Awady动力学模型和Flory-Huggins吸附等温方程,属于几何覆盖效应的单分子层吸附,提取液为混合型缓蚀剂;放置时间延长时,提取液的缓蚀率降低。     

Diverse Monitoring Approaches Reveal 14C Dispersion Pattern and Its Impact on the Environment around the Tokai Reprocessing Plant

Carbon-14 (¹⁴C) is of great interest in the assessment of dose due to the nuclear industry because of the biological importance of carbon. We collected atmospheric CO₂, rice grain, leafy vegetable, and Japanese mugwort samples at various locations at different time intervals, and measured their ¹⁴C concentrations to show the spatiotemporal distribution of ¹⁴C around the Tokai reprocessing plant (TRP). The results consistently gave the picture of a ¹⁴C dispersion pattern brought about by the prevailing wind in this area, which conveys the ¹⁴C plume, and as a result, caused elevated ¹⁴C concentrations in the area 2–3 km southwest of the main stack of the TRP. The increases in ¹⁴C concentration were, however, quite temporary, and the baseline concentration remained at the background level even in the elevated area. The ¹⁴C concentrations in vegetations generally followed those in atmospheric CO₂, but seemed different in ¹⁴C uptake response between vegetation types, emphasizing the importance of this nature not only in its application as bioindicators in environmental monitoring but also in establishing a more realistic dose evaluation model for ¹⁴C. Through a series of investigations, we found the highest ¹⁴C concentrations of 374, 287, and 361 Bq kg-C^?1 in atmospheric CO₂, rice grains, and leafy vegetables, respectively. They corresponded to a maximum of ~110 Bq kg-C^?1 excess above the background. The annual effective dose delivered from the concentrations was estimated to be around 0.7 μSv yr^?1, only 0.07% of the annual effective dose limit for the public. Thus, we conclude that the ¹⁴C releases from the TRP have a very slight impact both on the environment and on the public.     

Development of Oxide Dispersion Strengthened Steels for FBR Core Application, (II)

Previously manufactured oxide dispersion strengthened (ODS) ferritic steel cladding tubes had inferior internal creep rupture strength in the circumferential hoop direction. This unexpected feature of ODS cladding tubes was substantially ascribed to the needle-like grain structure aligned with the forming direction. In this study, the grain morphology was controlled by using the martensite transformation in ODS martensitic steels to produce an equi-axial grain structure. A major improvement in the strength anisotropy was successfully achieved. The most effective yttria addition was about 1 mass% in improving the strength of the ODS martensitic steels. A simple addition of titanium was particularly effective in increasing the strength level of the ODS martensitic steels to that of ODS ferritic steels.     

Milling and Processing of Wheat and other Cereals Affect Their Capacity to Inhibit Pancreatic Lipase in Vitro

The inhibition of pancreatic lipase activity by extracts of raw, milled or processed cereals was measured in vitro. The inhibitory activity was high in durum wheat, soft wheat and millet, moderate in barley and white sorghum and very low in red sorghum. Milling whole-grain into flours markedly decreased the lipase inhibitory activity in all species. In durum wheat, the germ and the aleurone-layer fraction exhibited the highest inhibitory activity. Processing of soft wheat by bread making, popping, flaking, drum-drying and extrusion-cooking, or durum wheat by making pasta markedly decreased the lipase inhibitory capacity. Extractible proteins were implicated in the inhibition process. These effects also had some nutritional implications.     

优质酒生产串蒸新工艺

利用双轮母糟代替扔糟进行酒精串蒸，最大限度地提取母糟的香味物质。试验表明，双轮母糟串入适量的酒精，其酒质具有原粮食酒的质量风格，酒质口感得到改善，优质品率得到提高，达到了节粮降耗、综合利用、优化工艺的目的。     

Preparation and Properties of Hydroxyapatite Strengthened with a Glass Phase

A method is described for preparing hydroxyapatite strengthened with a glass phase. The properties of the composites obtained containing both biological and synthetic hydroxyapatite are studied. Characteristics of the test materials such as pycnometric density, volumetric porosity, biological solubility, and mechanical strength are determined.     

优质粗颗粒金刚石生长技术

介绍了合成优质粗颗粒金刚石所用原材料的选择、预处理，合成块的组装及合成工艺参数。     

对金刚石强度测定方法的分析

金刚石强度对于金刚石工具是最为重要的一个参数。从本质上看，目前存在着单体静载强度、单体动载强度、群体动载强度三个指标。由于静载和动载间有较好的相关性，且单体法可清楚地展示出被测颗粒的强度分布，因而单体静载强度更为有效实用。对于金刚石生产厂，作为出口料，也需有群体动载强度指标。