Effects of Agaricus bisporus on gel properties of chicken myofibrillar protein

The gel-forming ability of myofibrillar protein (MP) is highly correlated with the characteristics of emulsified meat products. Incorporation of Agaricus bisporus (Ab) powder into MP gels may enhance its gel properties to facilitate the development of a novel and safe meat product. Therefore, this study investigated the effects of Ab powder on gel strength, water holding capacity (WHC), texture, rheological behaviour, LF-NMR spin–spin relaxation (T₂), microstructure and protein secondary structure of the MP gel system. The results indicated that the gel strength, WHC, G' value and G" value were significantly improved when the addition of Ab powder increased from 0% to 6% (P < 0.05). Meanwhile, the T₂ relaxation time was shortened, and free water was transformed into immobilised water. The texture of the gel was improved when 1%–4% Ab powder was added compared to the control. Furthermore, Ab filled in the gel network and promoted the unfolding of MP α-helix and the formation of MP β-sheet during the thermal denaturation of MP, leading to a dense aggregated network structure. The study suggested that Ab could be a promising ingredient in improving chicken MP's gel properties and developing fat-reduced meat products.     

浅谈综采工作面提高开机率的措施

结合西山煤电股份公司西曲矿综采队的实际情况,分析了综采工作面开机率的影响因素,并提出了提高设备开机率的措施。     

黄陵结晶岩区斜坡成因类型及稳定性评价

本文通过对长江三峡黄陵结晶岩区的地质条件、斜坡分级、各类斜坡的分布特征及成因类型等方面的系统论述，综合评价结晶岩区各类斜坡的宏观稳定性与稳定性分区，从而达到对该区斜坡合理开发与综合利用的目的。     

用神经网络综合预测水力旋流器性能

将人工神经网络用作水力旋流器的性能预测模型，实现了对其性能的全面预测，并探讨了结构及工艺参数对其性能的综合影响，弥补了以往数学模型预测的某些不足，为水力旋流器性能的综合预测提出了一个有效而简单的新手段。     

铁坑褐铁矿选矿新工艺研究

在选矿工艺矿物学特性研究的基础上,对铁坑褐铁矿进行了强磁-阳离子反浮选新工艺的研究,通过合理使用高效选矿设备及浮选药剂,使铁坑褐铁矿各项技术指标上了一个台阶.     

要求之外——一次高层办公楼设计竞标随感

在某高层办公建筑的设计过程中,主动地挖掘项目内在的要求与特征,提出超越纯外观要求的界限。通过对城市脉络、基地状态、功能判断等一直到内在要求方面的因果关系的梳理,逐渐明晰了设计的需要,使设计更具说服力与理性精神。     

Separation of physical loading from photosynthesis/respiration processes in rivers by mass balance

Diurnal variations in physical and chemical concentrations, including nutrients, are observed in river ecosystems. Understanding these cycles and separating the effects of physical loading (from point and non-point sources) and biogeochemical processes are necessary for water management and the TMDL process. A chloride mass balance approach is used to separate the relative influences of physical loading and biogeochemical processes in the Bow River through Calgary, Canada, which has a significant influence on the river water chemistry. Sampling campaigns were conducted in December 2005, when minimal photosynthesis and respiration occur, and in July 2006, when river discharge is high and some photosynthesis and respiration activity is present. Samples in each campaign were collected at point source input and output along the river reach through the city every hour for a 24-hour period, allowing for time of travel. The two wastewater treatment facilities within the city contributed the majority of physical mass loading to the river, with temporal variations in effluent discharge, chloride, and nutrient concentrations. Wastewater effluent chloride to nutrient (as well as other parameter relationships) concentrations also varied diurnally. An hourly chloride mass balance was achieved, within 0.5% (average, S.D.=4.4) for December and 7.7% (average, S.D.=4.2) for July, between estimated cumulative sum values from all inputs and measured values at the river output downgradient of the city, allowing for the investigation of other parameter conservativeness. Some slight diurnal variations associated with photosynthesis and respiration were observed even with limited productivity in the river. Nitrate mass fluxes appeared to be most strongly influenced by photosynthesis and respiration processes, with phosphate being less influenced. Ammonia mass fluxes appeared to be most strongly influenced by wastewater effluent loading. Physical loading can mask or enhance biogeochemical diurnal fluctuations, creating errors in river process interpretations. Chloride was a useful tracer in the mass balance to distinguish between and assist in separating physical loading and biogeochemical processes in the river.     

Study on Dynamic Behavior of Single-Layer Reticulated Dome by Shaking Table Test

International Journal of Steel Structures - Large-span space structures in the form of reticulated domes, which have developed rapidly in the last three decades, are widely used in large-scale...     

我国社区规划研究述评及展望

社区规划是解决社会问题的基本手段之一,社区规划研究是实现城乡和谐发展所关注的热点问题。研究基于对社区规划理论与方法、研究视角和研究对象类型划分的认识,总结我国社区规划研究的主要成果和存在的问题与不足,以及未来社区规划研究的趋势,提出引入地理学、管理学、经济学等相关学科知识以完善社区规划理论,在扩展社区规划研究视角的同时加强相关学科方法的介入,丰富社区规划研究对象类型,实现城乡全覆盖。     

从“Teculture”到“可持续发展”——技术哲学视角下的建筑学态度

建筑学的基本问题可通过一个坐标系作为起点来解读,即由＂需求一条件＂和＂技术一文化＂两条轴线构成的坐标系这四个要素从基础层面界定了建筑与建筑学存在和发展的前提。其中,＂从技术到文化＂作为建筑学发展的必由路径须得到更深入的剖析。技术并非独立存在.而是有其明确的功能指向,即提升建筑满足需求的能力..建筑并不因技术水平的不断提升而实现绝对的自由,可持续发展观念便是对建筑的合理限制：面对不同的背景条件,必须从基础实情出发,切实运用恰当的技术.解决符合建筑时空坐标的诸多问题,最终形成真正意义上的符合可持续发展精神的文化内涵。