降低焦炭水分的措施及效果

介绍了某焦化厂降低焦炭水分的措施及使用效果。实践证明,采用低水分熄焦方法可缩短熄焦时间,减少水的用量,降低焦炭水分,从而以低的投入成本收到良好的效果。     

Bacterial and Autolytic Changes in Water Retention and Adenosine Nucleotides of Cod Mince

Water uptake ability (WUA), expressible moisture (EM), hypoxanthine (Hx), and inosine (HxR) were monitored in cod mince stored at 0, ?2, ?3°C, with or without bacterial inactivation using NaOCl. Hx and HxR increased (p < 0.05) in all samples during the first 9-10 days. Bacterial inactivation reduced Hx and HxR build up. Beyond day 10, Hx and HxR decreased in all samples. The decrease was slower in samples in which bacterial had been inactivated. Bacterial inactivation deterred WUA increases and EM decrease.     

Effect of processing conditions on some functional characteristics of extrusion‐cooked cassava starch/wheat gluten blends

Extrusion‐cooked blends of cassava starch (CS) and wheat gluten (WG) were studied. The data were analysed using response surface methodology. The results showed the formation of new structures characterised by lower radial expansion (RE) and specific volume (SV) when gluten was added to CS. WG content was the most important variable affecting RE, water absorption index (WAI), water solubility index (WSI), SV and difference in colour (ΔE) of the extruded products, but feed moisture content and barrel temperature also influenced RE. WAI was affected by a significant interaction between WG content and barrel temperature. The extruded products had lower WAI values and higher WSI values than WG‐free products. Heat, high shear rate and high pressure during extrusion cooking caused mechanical destruction or denaturation of the WG and gelatinisation and dextrinisation of the starch components. The extruded blends could have diverse applications. © 2002 Society of Chemical Industry     

小麦水分吸附速率研究

在5种温度(10~35℃)、3个湿度(RH 65%、RH 86%、RH 100%)环境中测定了初始低水分(4.97%~6.08%)、正常水分(10.11%~11.04%)、高水分(20.7%~22.72%)小麦样品含水率随时间的变化,然后采用提出的扩散方程描述变化规律。随着温度和RH增加,小麦的水分吸附速率均增大。在RH 65%~86%范围内,小麦初始水分越低,20~35℃条件的水分吸附速率越大。在RH 65%,10℃小麦吸附速率随着初始水分减少而增大;在RH 86%,与低水分样品比较,正常水分小麦样品10℃起始吸附速率较大,但是快速降低。在RH 100%条件下,与低水分样品比较,正常水分小麦样品10~35℃吸附速率较大。对初始水分低于6.1%的小麦样品,分别在RH 65%、RH 86%、RH 100%条件下,20~35℃的水分吸附速率在48~72 h内急剧减少,而10℃水分吸附速率在108~120 h内缓慢减少,之后降低更慢。初始正常水分的小麦样品在RH65%、RH 86%或RH 100%条件下,10~35℃水分吸附速率在24~36 h内快速减少,之后变化平缓。初始水分高于20%的小麦样品在RH 65%、RH 86%解吸速率、RH 100%吸附速率对20~35℃在48 h内快速减少,之后变化缓慢;对10℃在96 h内快速减少,之后变化缓慢。     

考虑内部辐射下织物热湿传递现象的数值研究

人体在着装情况下的热湿传递现象对人体的热舒适性的研究有着很重要的地位。考虑了由于温度差而引起的织物内部的辐射热传递，对织物中的热湿传递现象进行了数值研究，建立了考虑辐射现象下织物内部热湿传递的简单模型，并讨论了计算结果。     

不同仪器测定盐中水分比对实验

作者针对目前因烘箱140℃测定食盐中的水分。时间过长，不能及时指导生产．影响出据报告的速度等问题。用不同仪器进行比较，提出微波炉加热测定法。     

The Effect of Steeping Time on the Final Malt Quality of Buckwheat

To determine the effect of steeping time on final buckwheat malt quality, buckwheat was steeped for three different times resulting in three different out‐of‐steep moisture contents: 7 h steeping (35%), 13 h steeping (40%) and 80 h steeping (45%). An increased steeping time increased malting losses, total beta‐amylase activity and Kolbach index. On the contrary total nitrogen, friability and viscosity of consequent congress worts were decreased. A maximum alpha‐amylase activity was found in buckwheat malted with an out‐of‐steep moisture content of 45%. Beta‐amylase existed in a soluble and latent form in buckwheat. The latent form was solubilised during malting. In addition extra beta‐amylase was produced. In general the optimum out‐of‐steep moisture content for buckwheat is between 35 to 40%, which is a compromise between attaining the desired malt quality and minimising malting loss.     

热环境下人体局部皮肤湿敏感性的分布特征

为研究在热环境下人体局部皮肤湿敏感性的分布特征,以及客观物理湿度与人体主观湿感觉之间的关系,采用弹性针织面料制作贴体连身实验服,在人工气候舱(温度为(30±1) ℃,相对湿度为(35±1)%)内,6位女性受试者穿着实验服以5 km/h的速度在跑步机上步行运动,记录受试者在实验过程中的客观生理数据和主观评价数据。结果表明:热环境中人体皮肤湿敏感性呈现局部分布特征,高敏感区为上额、前胸、下背,中敏感区为上臂、前腹、上背、小臂、臀部,低敏感区为小腿和大腿;实验证实了皮肤的湿度感知随着物理湿润度的提高而增强,湿度感知与物理湿润度存在正相关关系。     

防水透湿层压织物拒水整理工艺

采用浸轧和单面拒水整理工艺对层压织物进行拒水整理，分析拒水效果、涂敷量、粘合剂种类对粘合效果和拒水整理的影响，以及与透湿性能的关系。结果表明，织物采用常规粘合剂复合，随着织物拒水性能的增加，粘结效果变差；增加涂敷量，可改善粘合效果，但作用有限，需采用特殊性能的粘合剂，且不影响织物的透湿性。     

气体管路和手套箱氩气中微量水的在线分析

1:1地模拟金属钠冷反应堆的工程条件,建立了气体管路和手套箱氩气中微量水的分析方法.实验结果表明:当氩气中φ(H2O)≈3×10-4%时,测量的相对偏差<18%.在增压泵帮助下可以分析常压甚至微负压状况下手套箱内氩气中的微量水分.该方法完全满足了中国实验快中子反应堆CEFR对所使用氩气中微量水分的测量要求.