Contrastive Study on Content and Anti-oxidation Activity of Total Saponins from Cultivated and Wild Paris Plants in Southwest China

[Objectives]To study content of total saponins from cultivated and wild Paris herbs in Southwest China,evaluate its in vitro antioxidation activity,and explore ...     

寒地玉米多级顺流干燥工艺参数优化

为解决目前北方寒地玉米干燥加工中存在的干燥效率低、设备能耗大和干制品品质差等问题,利用自行设计的多级顺流式谷物干燥试验台,对北方寒地玉米多级顺流干燥特性和干燥加工工艺参数进行了研究。通过二次通用旋转组合试验设计方法,探讨热风温度、热风风速、干燥时间对设备单位能耗和干后玉米品质的影响,建立了相应的数学模型。将多目标综合优化,确定了干燥工艺的最优参数:热风温度103℃、热风风速1.5m/s、干燥时间100min。在此工艺参数条件下,有效地提高了干燥效率,降低了设备单位能耗及玉米干燥过程中营养成分的损失,达到了玉米保质干燥的目的。该研究旨在为北方寒地玉米干燥工业提供了理论基础。     

东省不同地区玉米内生真菌的群落组成和多样性分析

为探究山东省玉米内生真菌的资源分布、群落组成及多样性，采用叶片组织分离法对山东省52个市县的玉米内生真菌进行分离纯化，通过内转录间隔区（internal transcribed spacer，ITS）序列分析技术进行内生真菌的种属鉴定，并分析内生真菌的群落组成和多样性。结果表明，共分离到857株内生真菌，隶属25个属，其中链格孢属Alternaria的菌株数量最多，为583株，占总菌株数的68.03%，其次为镰刀菌属Fusarium有71株，占总菌株数的8.28%；大部分地区的优势属为链格孢属，少数地区的优势属为镰刀菌属、炭疽菌属Colletotrichum和弯孢属Curvularia。不同地区的内生真菌定殖率变化很大，在12.50%~100.00%之间，平均定殖率为76.15%；陵城的多样性指数和均匀度指数最高，分别为1.74和0.97；莱芜的丰富度指数最高为2.22。山东省玉米内生真菌可以分为5个类群，其中黄河流域地区内生真菌定殖率相对较高。表明山东省玉米内生真菌种类丰富，不同地区间多样性水平存在差异。     

猴头菌的药用价值概述

本文概述了猴头菌在医药方面的研究利用，包括抗溃疡、抗炎症、抗肿瘤，保肝护肝，抗衰老，降血糖、降血脂血压等方面的作用。     

从人性论角度审视体育教育中的学生

从人性论基础出发,在对体育教育中传统的人的形象进行反思和批判的基础上提出了"游戏人"的新形象.从"游戏人"的角度来看,体育教育中的学生是生成的,多样的,开放的,变化的.体育教师在教学实践中,必须保持开放灵活的态度,用新的眼光观察学生,思考学生,培养学生.     

我国秸秆人造板工业的发展现状及前景展望

分析了我国发展农作物秸秆人造板工业的必要性和可行性,概述了我国秸秆人造板工业的发展现状及发展过程中应注意的问题,并对我国秸秆人造板工业的发展前景进行了分析和展望,认为我国的秸秆人造板工业发展前景广阔,并将进入一个快速发展时期.     

巴旦木植物蛋白饮料的研制

研究了巴旦木植物蛋白饮料的工艺流程和技术条件，对其加工过程中的稳定剂的选择及产品的配方等主要工艺进行了探讨     

保护法合成Amadori化合物的研究进展

本文综合了国内外对Amadori化合物的合成方法，重点对保护法进行了综述，对于单氨基单羧基的氨基酸可采用保护还原糖的方法，对于一些多氨基或多羧基的氨基酸应采用保护氨基酸的方法。     

Spatial distribution patterns and environmental interpretation of Anthriscus sylvestris clonal buds

Anthriscus sylvestris, a weed found both in Europe and China, is a kind of representative clustered clonal plant and is a foe on dams and banks. It has been widely investigated in Europe for its powerful progenitive ability and tolerance to severely adverse environments. Our aims were to investigate and quantify its spatial distribution patterns in four types of community habitats, using a clustering method and adjacency lattice established by Greig-Smith. We concluded our environmental interpretation based on canonical correspondence analysis (CCA) appended to a Monte Carlo test with randomized seeding. The results indicate that the buds around the parent roots are in an aggregation distribution pattern in all scales (0.002–5.12 m²), but theoretical distribution fitting, like negative binomial and Poisson distribution, show that some sizes of several sampling locations are out of place. For this, spatial ordination gives a satisfactory answer implying the effect of environmental variables such as depth of humus layer, soil moisture, light condition, disturbance intensity and herb abundance. CCA accounts for 64.7% of the total environmental variation and the remaining variation may be counteracted in those five variances or can be interpreted by other factors like accumulating temperature, annual rainfall and altitude in landscape scale. With the aid of temporal sequencing, the suppressed type II (monodominant) may be the former mode of suppressed type I (stable type), where invasion is done with the help of disturbance from both humans and nature. The abundance of A. sylvestris can add to our cognition in diversity resistance hypothesis and our hypothesis on disturbance before or upon immigration. __________ Translated from Journal of Zhejiang Forestry Science and Technology, 2007, 27(3): 1–7, 11 [译自: 浙江林业科技]     

Two New Genera and Species of Blennocampinae from Sichuan and Yunnan (Hymenoptera:Blennocampidae)

本文记述川滇地区蔺叶蜂科蔺叶蜂亚科两新属新种：亮背卜氏叶蜂Ｂｕａｍｅｔａｌｉｃａｇｅｎ．ｅｔｓｐ．ｎｏｖ．新属新种，红胸滇片叶蜂Ｄｉａｎｓｔｅｔｈｕｓｒｕｆｉｔｈｏｒａｃｉｃｕｓｇｅｎ．ｅｔｓｐ．ｎｏｖ．新属新种，两新属均隶属于等节叶蜂族Ｐｈｙｍａｔｏｃｅｒｉｎｉ．卜氏叶蜂属与ＰｈｙｍａｔｏｃｅｒｏｐｓｉｓＲｏｈｗｅｒ和ＤｉｃｒｏｓｔｅｍａＢｅｎｓｏｎ二属近似，区别为：新属虫体瘦长，前胸背板侧叶无斜脊前沟，前翅２Ｒｓ室长于１Ｒ１和１Ｒｓ室之和，后翅臀室具长柄，锯背片无节缝刺列．此外，新属与Ｄｉｃｒｏｓｔｅｍａ的区别还有２Ａ＋３Ａ脉端部上曲，颚眼距较狭窄；与Ｐｈｙｍａｔｏｃｅｒｏｐｓｉｓ的区别还有后翅Ｍ室封闭，唇基端部截形．滇片叶蜂属与ＰｈｙｍａｔｏｃｅｒｏｐｓｉｓＲｏｈｗｅｒ最接近，其区别为新属爪具显著基片、后颊脊缺、后翅具封闭的Ｍ室和锯背片具节缝刺等．