, 2009 植被恢复是宁南山区治理土壤退化及保持水土的主要措施，这个地区的植被恢复措施主要分为天然草地封育、牧荒坡短期封禁草地和人工柠条的种植。本研究针对宁南黄土丘陵区植被恢复措施的现状，选取植被恢复过程中典型样点进行试验，揭示了研究区植被恢复过程中土壤有机碳库特征、碳汇效应及团聚体的物理保护机制。1.
华娟
core
[Research progress in mechanisms of dietary resistant starch for regulating glucose and lipid metabolism]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoLiu K, Li X, Zhang Y, Sun J, Liao W.
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[Isolation and identification of <i>Pediococcus acidilactici</i> BPA03 derived from human milk and evaluation of its antioxidant and anti-aging probiotic properties]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoCao L, Huang P, Zhang Z, Sun W, Qiu F.
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[Open experiment of modern instrumental analysis course： preparation of biomass-derived functional materials and their enrichment application of antibiotics in water environment]. [PDF]
Se PuLei XY, Jin LX, Wu XP.
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固体浮力材料是深海开发中普遍应用的一种功能材料,利用其密度小于海水的特点,实现往返式深潜器的无动力上浮和海底生产系统的浮力补偿与保温.随着海洋资源开发及科考向深海的挺进,装备作业模式向长时间坐底、连续往返方向发展,因此对固体浮力材料提出了更为苛刻的要求.低密度、抗高静水压的能力以及长时间深水服役环境下的可靠性是固体浮力材料的核心目标.文章以这三方面要素为牵引,分类阐述了两相、三相和混杂强化浮力材料的微结构与性能之间的关系.同时结合深远海探测装备长期服役的需求,从物理老化 ...
张敬杰 +5 more
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[Applications and challenges of ultra-high molecular weight polyethylene fibers in minimally invasive medical devices]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiShi S +9 more
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, 1983 在实验室和晚稻田间研究了铵态氮对我国稻田中应用的几种固氮蓝藻固氮活力的影响,同时对湖北省圻春县和浠水县不同肥力的76块晚稻田水层铵态氮含量进行了测定,获得了下列结果。在实验室条件下,铵态氮浓度为1ppm时,对蓝藻固氮活力有抑制,不同种类之间抑制程度有差别。当溶液中铵被耗尽后,固氮活力上升,并在9小时后可恢复到原来水平, 在小区实验的晚稻中,施硫酸铵40斤/亩和碳酸氢铵50—70斤/亩作底肥,插秧后放蓝藻,固氮酶活力的变动与实验室情况相近,在稻田水中铵态氮浓度降低或消失时,固氮活力恢复 ...
沈银武,王乾麟,崔希羣,黎尚豪
core
[Comparison of chiral separation performance of （2-hydroxyethyl-<i>β</i>）-cyclodextrin bonded superficially porous and fully porous particle chiral stationary phases in supercritical fluid chromatography and reversed-phase liquid chromatography]. [PDF]
Se PuYang GY +4 more
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, 2001 本文从稀相气固两相流理论出发,针对沙尘暴问题的特点,给出描述固相拟流体本构关系和气固相间相互作用的方法,探讨确定沙尘悬浮临界判据的途径,导出多场耦合下含尘大气运动的基本方程,提出控制沙尘弥散相动力学行为的相似准则 ...
陈强, 王柏懿, 戚隆溪
core
[Network pharmacology-based investigation of the therapeutic efficacy and molecular targets of Xiangsha Liujunzi decoction in thyroid carcinoma]. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue BanHuang K +6 more
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