Physicochemical Properties of Bread Baked from Flour Blended with Immature Wheat Meal Rich in Fructooligosaccharides

ABSTRACT: Grain of the soft white wheat cultivar Harus was harvested weekly from anthesis to maturity and fructooligosaccharides (FOS) contents were determined by reversed-phase high-performance liquid chromatography. Tests were carried out to determine the effect of adding immature wheat meal to a base flour of cultivar Russ (hard red spring) on the quality characteristics of bread. FOS content was also analyzed in baked bread, and the effect of transglutaminase in improving bread quality was examined. Marked decreases in FOS contents, such as 1-kestose and nystose, were observed with grain maturation. The overall quality of bread appeared to be acceptable, and the added FOS were retained after baking.     

光纤声发射传感器的研究现状与展望

光纤声发射传感器是近年来出现的集光学、声学、电子学为一体的新型声发射传感器。介绍了光纤声发射传感器的原理、特点、研究现状和最新进展,以及各类传感器在不同领域的应用情况,提出了目前光纤声发射传感技术存在的问题、发展趋势与展望。     

Structural health monitoring of innovative bridge decks

For more than a century, important civil engineering structures such as bridges, high-rise buildings, dams and marine platforms have contained iron or steel as the reinforcement for concrete or wood. The useful lives of such structures have often been severely limited by the corrosion of this ferrous component. Much thought has been given in recent years to constructing structures that are lighter, stronger and non-corrosive. These innovative structures are new and for these to be accepted by the engineering community monitoring is mandatory. ISIS Canada has been developing such structures and monitoring them. In this paper, innovative bridge decks that have been implemented are described.     

Slope stability analysis of Balia Nala landslide,Kumaun Lesser Himalaya,Nainital, Uttarakhand,India

Balia Nala is the outlet of the Nainital lake, flowing towards southeast direction. Presence of Nainital habitation at its right bank has high socio-economic importance. This study presents the stability analysis of a ravine/valley along Balia Nala. Variegated slates(lower Krol and upper Blaini formations) are the main rock types, wherever the outcrop does exist and rest of the area is covered by slope wash and river borne materials. Three sets of joints are presented in the area, but 4 sets of joints also exist at some locations. Nainital lake fault intersected by Manora fault from southwest direction passes through eastern side of the study area, and some small faults, which are sub-branches of Nainital lake fault, are observed(with 10 m offset) and promote the landslide in the area. This study shows that different kinds of discontinuities(joints, faults and shear zones) and rapid down cutting by the stream due to neotectonic activity affect the stability of the slope. The fragile lithology and deep V-shaped valley further accelerate the mass movement in the study area. In addition, rock mass rating(RMR), factor of safety(FOS) and graphical analysis of the joints indicate the study area as landslide-prone zone. This study will be helpful in not only reducing the risk on life of people, but also in assisting the ongoing civil work in the study area.     

Arc perturbation theory of magnetic deflection

A perturbation theory is presented for deflection angles larger than 45°. Several parameters that previously had to be treated perturbatively are handled exactly. The theory can be used for a systematic study of front‐of‐screen errors in slim CRTs. First‐order results are presented and applied to a field configuration with a strongly varying dipole strength.     

Hill slope instability of Nainital City,Kumaun Lesser Himalaya,Uttarakhand, India

Nainital City of Kumaun Lesser Himalaya is prone to mass wasting processes during monsoon season, which mischievously triggers the hill slope instability in this region. Slate, dolomitic limestone, silty sandstone and rhythmite of the Krol Formation are the main rock types. The present study focuses on the investigation of slope stability in the region in terms of potential seismicity and landslide. Geological and geotechnical mapping indicates that the major portion of the area is characterized by slope wash materials and buildings. The combination of 3–4 joint sets with one random joint is the main structure at outcrops. The major geological structures of this area are Nainital lake fault passing from the center of the lake, Main Boundary Thrust at SW, and Khuriya Fault passing from the SE direction of Nainital City. This work finds that different types of discontinuities (e.g. joints and faults), overburden due to unplanned civil structures, and neotectonic activity in the vicinity of this area affect the stability of the city. The slate forms the base of the city, dipping slightly towards the lake side along the NW direction, thus accelerating the instability of this area. Rock mass rating (RMR), slope mass rating, factor of safety (FOS) and graphical analysis of the discontinuity for slope kinematics indicate that the study area is a landslide-prone zone. This study can facilitate reducing the risk of human life, and contribute to the ongoing construction works in the area.     

基于光纤传感的边坡工程监测技术

传统的边坡监测技术存在着精度低、耐久性差、难以实现集成等缺陷。针对边坡工程特点,探讨了光纤光栅、布里渊光时域分析和低相干干涉等光纤传感技术在现场监测的应用。根据不同的工程需要,结合这三种技术建立边坡监测系统,可用于对边坡位移和边坡支护结构的应力、应变进行自动化监测。在详细论述了光纤传感技术的基本原理、适用场合和系统架构的基础上,以香港一个公路边坡加固工程为例,简述了光纤传感技术现场应用时的仪器安装、数据采集与分析等工作。     

双歧杆菌发酵荔枝鲜果汁开发益生饮品的研究

研究了利用双歧杆菌发酵荔枝鲜果汁开发荔枝益生饮品的工艺。结果表明,纯荔枝鲜果汁环境不适合双歧杆菌生长,通过在荔枝汁中添加0.5%寡果糖生长因子,优化工艺条件下可以开发出双歧杆菌活菌含量较高的荔枝益生饮品。     

我国低聚果糖的生产及应用进展

介绍了近年来我国低聚果糖生产与应用的情况,指出以低聚果糖为原辅配料的保健食品, 市场前景十分看好, 具有极大的发展潜力。