Results 71 to 80 of about 2,258 (175)
Shuitu Baochi Xuebao, 2023 为揭示季节性冻融区土壤侵蚀阻力的变化机制,确定影响土壤侵蚀阻力主控因子,通过室内冻融模拟、水槽冲刷和土壤抗剪试验,对黄绵土(SM粉质壤土)、风沙土(WS砂壤土)和黑土(KS黏壤土)侵蚀阻力影响因素进行研究。结果表明:(1)随着冻融循环次数增加,细沟可蚀性值逐渐升高,而临界剪切力降低。经历10次冻融循环后,SM粉质壤土、WS砂壤土和KS黏壤土的细沟可蚀性分别增加76%,63%,11%,临界剪切力分别减小37%,13%,91%。(2)细沟可蚀性随土壤抗剪强度、黏聚力和内摩擦角增大而减小 ...
卢超 +3 more
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Effects of Soluble Soybean Polysaccharide on Physicochemical Properties of Glutinous Rice Flour and Quality of Quick-frozen Sweet Dumplings [PDF]
There are some problems with quick-frozen sweet dumplings, such as poor water retention, easy freezing cracking, and high adhesiveness after cooking. To improve the quality of quick-frozen sweet dumplings, this paper investigated the effects of different
Hongwei WANG +5 more
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Shuitu Baochi Xuebao, 2017 以重金属Cd为单一污染源的棕壤作为供试土壤，设定-10，-20，-30 ℃三个温度作为冻结温度，10 ℃作为融化温度进行土壤冻融循环试验。通过测定冻融作用后土壤团聚体粒径组成、土壤质量平均直径、团聚体粒径中Cd的质量负载率以及土壤团聚体中Cd的赋存形态，研究冻融作用对棕壤团聚体稳定性及Cd在不同团聚体粒径中分布与赋存形态的影响。结果表明：土壤经过冻融作用后，＞2 mm的团聚体比例显著增加(P＜0.05)，增加范围为38.4%～54.6%，土壤质量平均直径显著增加(P＜0.05)。经过冻融作用后 ...
王梦露 +7 more
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Shuitu Baochi Xuebao[目的] 为研究生物结皮覆盖和冻融作用对土壤结构的影响。[方法] 以黄土高原北部风沙土为研究对象,采用室内模拟冻融的方法,利用田口方法分析不同冻融次数、冻融前土壤初始含水量和生物结皮(藻结皮)盖度对土壤结构特征的影响。[结果] (1)通过正交试验获取的土壤结构指数(IGSS)为75.57~96.57,信噪比(S/N)为37.55~39.70 dB,通过田口方法确定的最佳因子组合为15次冻融循环、15%初始含水量、80%藻结皮覆盖度,其预测结果为IGSS=98.09,S/N=39.89 dB。(2 ...
钟志强 +4 more
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Shuitu Baochi Xuebao, 2021 为明确土壤冻融过程中水分垂直迁移与其主要影响因素间的定量关系，以我国东北典型黑土为研究对象，通过单向冻融试验，进行了不同初始含水率、降温幅度和地下水位条件下土壤冻结过程中水分垂直迁移试验，定量分析了主要影响因素对黑土冻融过程中水分垂直迁移的影响规律。结果表明：（1）试样中温度变化先快后慢，最终试样内部温度随深度呈现稳定的温度梯度分布；（2）初始含水率对土壤的冻结影响较为明显，初始含水率越高，冻结经历时间越长，冻结过程中消耗的潜热量越大，冻结锋面形成越晚；（3）不同降温幅度使得土壤温度梯度差距较大，15 ...
刘红希, 范昊明, 许秀泉
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[Association of number and quality of embryos transferred with early pregnancy loss in infertile women at an advanced age undergoing frozen-thawed embryo transfer]. [PDF]
Nan Fang Yi Ke Da Xue Xue Bao, 2021 Zhang Q +6 more
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Influences of Three Kinds of Edible Mushrooms on the Storage Quality of Pork Patties during Freeze-Thaw Cycles [PDF]
To assess the effects of incorporating edible mushrooms on the quality of frozen and thawed pork patties, this study utilized three mushrooms varieties (Pleurotus eryngii, Hypsizygus marmoreus, and Lentinus edodes) at varying inclusion rates (0, 1%, 5 ...
Fangfei LI +5 more
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Shuitu Baochi Xuebao, 2017 为研究东北地区坡耕地的春季融雪侵蚀特征及其影响因素，选取吉林省吉兴小流域内坡耕地进行原位观测，通过分析融雪过程中径流量和含沙量的变化，以及融雪径流、土壤解冻深度等指标对融雪侵蚀的影响，探讨坡耕地融雪侵蚀过程及变化规律。结果表明，在日平均温度0～3.8 ℃的气象条件下，春季融雪侵蚀较为集中，径流与含沙量变化均先增加后减少。融雪径流与表层土壤解冻深度是影响融雪侵蚀的重要因素，初期融雪产流，土壤未解冻，径流急剧增加，径流量占融雪期总径流量的59.15%；中期积雪融化趋于稳定，土壤表层开始解冻 ...
华文杏 +6 more
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Effects of the conditions of frozen storage and freeze-thaw treatment on the formation of α-dicarbonyl compounds in unwashed silver carp surimi [PDF]
ObjectiveTo regulate the formation of α-dicarbonyl compounds (α-DCs) in unwashed silver carp surimi.MethodsThe levels of 3-deoxyglucosaldosterone (3-DG), glyoxal (GO), pyroacetal (MGO) and 2, 3-butanedione (2,3-BD) were analyzed in surimi during frozen ...
HUANG Yiqun +6 more
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Preparation and characteristics of high-protein and fat-reduced Vegetarian Mayonnaise Co-stabilized by natural Quillaja saponin and soybean protein isolate [PDF]
In this study, the synergistic effect of Quillaja saponin (QS) and soybean protein isolate (SPI) on stabilizing emulsion gels was used to prepare plant-based mayonnaise (PM) with high protein content and reduced fat content.
YIN Wenjun, ZHU Mengmeng, CHEN Xiaowei, SUN Shangde, WANG Yonghui
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