Results 81 to 90 of about 816 (101)
青藏高原的地理、地质和气候都具有特殖性,因而其土壤侵蚀是以冻融侵蚀为主结合其它多种侵蚀类型的侵蚀作用,具体分析了青藏高原冻融侵蚀的动力和3种特殊形态的冻融侵蚀。为了减少水土流失,保护高原生态环境,最后提出了几点意见。
董瑞琨 许兆义 等
doaj
The effects of corn starch addition on the freeze⁃thaw qualities of frozen rice noodles [PDF]
ObjectiveThis study aimed to improve the high rate of broken rice noodles and serious muddy soup after flash freezing.MethodsThe effects of 20% corn starch addition on the cooking qualities, texture characteristics, sensory properties, freezable water ...
CHEN Zhengxing +5 more
core +1 more source
目的冻融作用是影响高寒地区土壤侵蚀的主要因素,青藏高原具有显著的季节性冻融循环规律,冬季土壤冻结,初春时期解冻,为明确坡面侵蚀对冻融作用的响应。方法以高寒土为研究对象,通过室内人工模拟降雨试验,分析不同降雨强度(40、60、80 mm/h)与坡度(5°、10°、15°、20°)组合下冻融作用对坡面侵蚀输沙模数的影响,同时构建3种输沙模数预测模型:单因子模型、回归模型和增量模型。结果1)经冻融作用后的坡面输沙模数显著提升16.74%~86.87% (p<0.05),低雨强(40 mm/h ...
赵鸿博 +4 more
doaj
Molecular Mechanism by Which Oat β-Glucan Enhances Freeze Tolerance in Yeast [PDF]
To investigate the molecular mechanism for the effect of oat β-glucan (OβG) at different concentrations (0.5% and 1%) on freeze tolerance in yeast, yeast cells alone or under the protection of OβG were frozen and thawed up to five times.
YANG Jing, JI Shengxin, CAI Jie, YANG Yong, AI Zhilu, LI Zhen
core +1 more source
通过引入ADVA152减水剂、DARA-VAIR110引气剂和硅灰对瓷绝缘子用水泥胶合剂配方进行了改进,并制备了改进型水泥胶合剂试样和瓷绝缘子试品,进行了胶合剂试块冻融循环后的抗压强度、抗折强度、体积变化率试验研究,瓷绝缘子试品冻融循环后的残余机电强度试验研究。试验结果表明,改进型水泥胶合剂能够有效提高瓷绝缘子的耐冻融循环能力。
张俊双 +3 more
doaj
Effects of Freeze-Thaw Treatment and Freeze Storage on the Binding Characteristics of Snakehead Myofibrillar Protein to Characteristic Flavor Substances in Fish Soup with Pickled Mustard Greens [PDF]
The purpose of this study was to explore the effect of freeze treatment on the binding characteristics of fillets to flavor substances in fish soup with pickled mustard greens.
YUAN Li, SU Kai, LIU Lu, LENG Weijun, ZHANG Hao, LI Mengzhe, SHI Tong, BAO Yulong, GAO Ruichang
core +1 more source
Properties, Physiological Functions and Applications of Starch-Lipid Complexes [PDF]
Starch-lipid complexes, the fifth type of resistant starch, result from the binding of starch's long-chain segments with oils or fatty acids, which alters the original starch's structure, properties, and physiological functions.
Changqing RUAN +4 more
core +1 more source
Effect of Vitamin C on Physicochemical Properties and Digestibility of Lotus Seed Starch during Freeze-Thaw Cycles [PDF]
In order to clarify the effect of vitamin C (VC) on physicochemical properties and digestibility of lotus seed starch (LSS) during freeze-thaw cycles, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction ...
ZHANG Wanni, HE Weiwei, SONG Xiaoxiao, YIN Junyi
core +1 more source
为探索石河子灌区冻融季节积雪与地表联合覆盖条件下土壤水盐运移的变化规律,2015—-2016年通过田间小区试验,进行了秸秆、地膜、活性炭3种地表覆盖和裸地对照在整个季节性冻融期土壤水盐时空动态变化规律研究。结果表明:地表覆盖比裸地具有更好的保墒、降盐效果。冻结土壤完全融通后,秸秆、活性炭覆盖出现含水量增幅的最大土层范围分别是0—30,0—40 cm,反映出这2种覆盖经历冻融过程后更有利于土壤水分的保持和融雪水的高效利用;活性炭、秸秆、地膜覆盖和裸地在0—30 cm土层含盐量相比初始值的增幅分别为18 ...
唐文政 +3 more
doaj
为揭示冻融作用对坡面土壤水蚀的影响,探究春季解冻期坡面土壤的水蚀动力参数动态响应时空演化过程,采用2个坡度(10o,15o)、4个流量(4.5,6.5,8.5,10.5 L/min)和4个起始解冻深度(2,5,10,15 cm),进行野外径流冲刷试验,系统地分析冻融坡面水蚀动力参数雷诺数、弗劳德数、流速、水流剪切力、水流功率、单位水流功率在不同起始解冻深度、不同流量和不同坡度条件下的时空演化过程。结果表明:冻融坡面水蚀动力参数雷诺数、流速、水流剪切力和水流功率随流量的增加呈增加趋势;水流剪切力 ...
鲍永雪 +4 more
doaj

