粉煤灰在结缕草草坪建植期杂草防除的试验研究

通过盆栽试验和大田试验，研究了结缕草种子在粉煤灰以及大田土壤中的发芽率，分析了结缕草草坪建植期使用粉煤灰控制杂草的效果．结果表明：粉煤灰盆栽结缕草的发芽率为83％，大田土壤盆栽的发芽率为84．33％；在结缕草建植期使用粉煤灰覆盖控制杂草效果明显，且厚度以2cm左右为宜，杂草控制率可达96％以上．本试验的研究结果对综合利用粉煤灰，解决粉煤灰环境污染和占地问题提供了一个新思路。     

关苍术化学成分的研究

利用溶剂法、硅胶柱层析、薄层层析等分离手段，处理延边产关苍术根茎部分，分离得到了5种化合物．根据这些化合物的理化性质，利用光谱分析、标准品公正等方法鉴定了其中3种化合物的结构．它们分别是β-谷甾醇、苍术烯内酯丙、胡萝卜甙．对另外2种化合物提供了IR、^1H NMR、^13C NMR谱图，并提出了推测结构．     

辽宁省水稻品质现状的初步分析

采用聚类分析和因子分析等方法,对辽宁省近年来生产上应用面积较大的20个水稻新品种品质进行分析。结果表明,目前在辽宁省主栽品种中,品质性状能够达到国家一级优质米标准的品种占总数的20%,达到国家二级优质米的品种占总数的30%,达到国家三级优质米的品种占总数的25%,未能达到国家优质米标准的占25%。在参试水稻品种米质性状中,垩白性状变化最大,是目前在水稻生产上米质不能达标的主要因素,其次是长宽比、胶稠度、直链淀粉含量、糊化温度,而最为稳定的是糙米率和精米率。因子分析的结果表明,糙米率、精米率、整精米率、垩白度和垩白率为影响目前辽宁省粳稻品种品质的主要因子。     

粳稻谷商品品质评价系统模型的建立与应用

根据单目标化灰色局势决策理论 ,在对沿黄稻区主要推广粳稻品种商品品质测定的基础上 ,建立了粳稻谷商品品质评价系统模型 .该模型可对粳稻品种的商品品质进行优化分析处理 ,结果按综合评价目标值排序 ,从而确定稻谷商品品质的优劣 .粳稻谷商品品质评价系统模型的建立及其应用 ,弥补了国标用单一指标评价的不足 ,为全面评价优质稻谷商品品质提供了新方法 .     

Sexual fetishism in a quail (Coturnix japonica) model system: Test of reproductive success.

In the present study, the authors explored the reproductive consequences of fetishistic behavior in a previously developed animal model of sexual fetishism (F. K?ksal et al., 2004). Male domesticated quail (Coturnix japonica) received sexual conditioning trials in which a terrycloth object (the conditioned stimulus [CS]) was paired with the opportunity to copulate with a female quail (the unconditioned stimulus). Approximately half of the male quail came to copulate with the CS object and were considered to have developed fetishistic behavior. Each of the male quail was then tested with a female quail, whose eggs were incubated to determine rates of fertilization. The CS object was present for 30 s before and during the copulation test. Fetishistic male quail were slower to achieve cloacal contact with the female quail and showed less efficient copulatory behavior. However, they fertilized a greater proportion of eggs than nonfetishistic male quail. These results are unexpected from previous studies of the relationship between reproductive success and copulatory behavior and are discussed in terms of how fetishistic behavior directed toward an inanimate object may modify male-female interactions. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

枇杷叶有效成分提取及药理作用研究进展

枇杷叶中含有挥发油、三萜酸类、黄酮类、皂苷类、有机酸类等多种化学成分,有效成分主要为乌索酸、黄酮类化合物和苦杏仁苷,具有抗炎止咳、降血糖、抗病毒和抗肿瘤等药理活性,有十分重要的开发利用价值。本文综述了枇杷叶有效成分的提取及在药理上的作用。     

微波法提取金银花中的绿原酸

采用微波法提取了金银花中的绿原酸,所制得的绿原酸粗产品用石油醚脱色、薄层层析分离和紫外分光光度计测定含量,并与超声波法、水提法进行了比较.实验结果表明,微波法在提取金银花的绿原酸中具有非常好的效果,筛选的最佳微波工艺条件是：微波功率260W,样品预浸时间24hr,辐射时间15min.在此条件下,与水提法相比总收率提高了10.59%,提取时间缩短75%;与超声波提法相比总收率也提高了2.60%,提取时间缩短了50%.且该方法具有操作简单、快速高效、节能环保等优点.     

天然中空异形萝藦种毛纤维的吸油性能

为探究萝藦种毛纤维在吸油领域的应用潜力,实现纤维的高值化利用,采用光学接触角测量仪测量了水及不同油剂在萝藦种毛纤维表面的静态接触角;利用纤维成像系统对比观察了吸油前后及重复吸油后纤维的形貌变化;同时分析了其对不同油剂的静态吸油、保油及重复吸油性能,并以该纤维为过滤层初步分析其对油水混合物的分离性能。结果表明:萝藦种毛纤维具有优异亲油疏水性,与纯水的静态接触角为151.12°;因纤维间隙及中空结构的吸油储油作用,其对植物油、机油和柴油具有较高的饱和吸油倍率,分别为81.52、77.62和57.22 g/g;经 12 h 重力沥干,保油率仍可达到79.1%、75.4%和72.0%;经8次循环使用后,纤维的吸油倍率分别下降了23.4%、22.2%和20.7%;经4次过滤后,纤维对植物油的分离效率达98.0%,可初步实现油水分离。     

Lonicera japonica Thunb. extract improves the quality of cold‐stored porcine patty through inhibition of lipid and myofibrillar protein oxidation

The aim of this work was to analyse the honeysuckle extract (HE) for its in vitro antioxidant activity using the ORAC, reducing power, DPPH and ABTS assays. The effects of HE on the quality characteristics and physicochemical properties of porcine patties during refrigerated storage at 4 °C were studied. Chlorogenic acid contributed about 50% to the antioxidant activity of HE. HE possessing strong antioxidant activity was incorporated into porcine patties at 0.02%, 0.1% and 0.5% concentrations and compared with 0.02% and 0.1% chlorogenic acid as references. The addition of 0.1% HE and chlorogenic acid significantly reduced the loss of hardness, springiness, chewiness and cohesiveness of porcine patties in terms of inhibition of lipid oxidation, formation of protein carbonyls, generation of covalent bonds and tryptophan loss during 15 days of chilled storage. HE could be used in porcine patty as a natural antioxidant.     

槐叶提取物在油田水处理中的应用研究

研究了槐叶提取物在油田采出水处理中的应用。分别采用水和乙醇对槐叶进行提取,考察了提取物分别作为缓蚀剂和杀菌剂的作用效能。结果显示槐叶的水提物和醇提物有一定的缓蚀作用,水提物缓蚀作用强于醇提物。此外,槐叶水提物对硫酸盐还原菌(SRB)、腐生菌(TGB)和铁细菌(FB)有一定的杀菌作用,而醇提物对3种细菌杀菌作用弱。