棕色海藻提取物岩藻黄质对运动性疲劳的缓解作用

棕色海藻的一种天然提取物岩藻黄质，近年来受到科学研究的关注，尤其在抗疲劳领域。作为一种具有高度抗氧化活性的物质，已被证明能够显著降低运动后的氧化损伤，并有效缓解疲劳。本研究选用大鼠并分为六组，包括对照组、EIF模型组、不同剂量的岩藻黄质处理组以及岩藻黄质和Nrf2抑制剂ML385的联合处理组。经过4周的实验后，结果发现与EIF模型组相比，岩藻黄质处理组的力竭游泳时间明显延长，同时血清中LDH、CK、cTnI的水平降低，骨骼肌中的抗氧化酶如SOD、CAT、GSH-Px活性增强，而MDA水平下降。此外，岩藻黄质处理增强了Nrf2及其下游靶基因HO-1和NQO-1的表达，而抑制了Keap1的表达。然而，当使用Nrf2抑制剂ML385时，上述岩藻黄质带来的抗EIF效果和对Nrf2-ARE通路的激活都被抑制。综上，岩藻黄质通过激活Nrf2-ARE通路有效缓解EIF，展现出作为一种高效抗EIF保健成分的潜力。显然，岩藻黄质有望成为未来抗疲劳领域的重要天然成分，并有潜力在运动补充剂或食品添加剂中得到广泛应用。     

柿果类胡萝卜素化学成份及其含量研究

对柿果中类胡萝卜素化学成份及其含量的季节性变化以及栽培条件的影响等进行了调查,旨在为柿色素代谢及其功能性成分合成与调控等的深入研究奠定基础。结果如下：柿果实中的色素成份为玉米黄质、β-隐黄质、β-胡萝卜素、叶黄素和番茄红素;果皮中的类胡萝卜素总含量约是果肉中的6-11倍;按类胡萝卜素组成成分的含量由高至低,果皮依次为玉米黄质、β-隐黄质、β-胡萝卜素、叶黄素和番茄红素;而果肉依次为β-隐黄质、玉米黄质和β-胡萝卜素。结果表明,柿果肉主要色素成份为功能性β-隐黄质。温室栽培磨盘柿果中功能性成分β-隐黄质含量是露地的3倍。供试7品种间色素成分与含量有很大区别。     

大蒜油提取及应用研究现状

介绍了大蒜油的理化性质、提取方法、影响出油率的因素以及在抗氧化和食品调味方面的应用。其提取方法主要有3种:水蒸气蒸馏法、有机溶剂浸提法和超临界CO2萃取法。试验证明:大蒜油在抗氧化和食品调味等方面具有广阔的应用前景。     

甘薯的保健功能及药用价值研究进展

甘薯在控制人类许多疾病(如癌症、糖尿病和心脑血管疾病等)方面具有药用价值。同时,甘薯还具有抗氧化、预防肥胖和增强免疫力等保健功能。系统综述近年来甘薯的保健功能及药用价值方面的研究成果,并对其应用进行展望。     

葡萄多酚提取及抗氧化研究进展

葡萄多酚类物质是葡萄重要的次生代谢产物,葡萄多酚具有较强的抗氧化活性,是一种很好的自由基清除剂和脂质过氧化抑制剂,其抗氧化性在药品、保健品、食品、化妆品等领域有很多应用。就葡萄多酚的提取方法和抗氧化方面的研究进行综述。     

葡萄多酚提取及抗氧化研究进展

葡萄多酚类物质是葡萄重要的次生代谢产物,葡萄多酚具有较强的抗氧化活性,是一种很好的自由基清除剂和脂质过氧化抑制剂,其抗氧化性在药品、保健品、食品、化妆品等领域有很多应用.就葡萄多酚的提取方法和抗氧化方面的研究进行综述.     

马尾藻岩藻聚糖硫酸酯抑制HepG2细胞的增殖研究

采用MTT方法考查不同浓度的马尾藻岩藻聚糖硫酸脂对HepG2细胞存活率的影响,进一步运用流式细胞仪和检测ROS含量探讨马尾藻岩藻聚糖硫酸酯抑制HepG2细胞增殖的机理。结果表明,在0.5~8.0 mg/mL内,HepG2细胞的存活率随着马尾藻岩藻聚糖硫酸脂浓度的升高呈下降趋势。研究发现,随着马尾藻岩藻聚糖硫酸脂浓度的增加,细胞内SubG1和G0/G1的细胞数量升高。而且,通过检测细胞内活性氧(Reactive oxygen species,ROS)含量,发现随着马尾藻岩藻聚糖硫酸脂浓度的增加,细胞内ROS含量显著升高。马尾藻岩藻聚糖硫酸脂抑制HepG2细胞增殖是通过诱导细胞内ROS的过量产生导致细胞发生凋亡和G0/G1阻滞。     

小米中抗氧化活性成分的研究进展

小米是世界上最古老的农作物之一,营养价值高且营养均衡。小米中多酚类物质是其主要的抗氧化活性成分,还有维生素、氨基酸、抗氧化酶等多种天然抗氧化剂,由于小米中多酚类物质含量较高,具有较其他谷物类更强的抗氧化性。食用小米具有滋补气血、补肾益气、健脾健胃的作用,这些功能都与小米中的抗氧化物质密不可分。综述了近年来国内外在小米抗氧化活性成分方面的研究进展,为研究小米在体内的抗氧化能力及其对人体健康的影响提供科学依据。     

甘草的抗氧化性能及其它

经筛选试验,发现我国甘草对食用油脂具有很好的抗氧化性能,国内尚未见到这方面的报道.甘草的不同溶剂提取物的抗氧化效能随添加量的增加而增强,乙醚提取物0.1%、乙醇提取物0.3%时,有优于合成抗氧化剂BHT最大限制用量的作用.甘草的酸性丙酮提取物也具有一定的抗氧化效能,经硅胶薄层分离纯化得到的甘草酸,抗氧化效能不及粗提物.经试验发现甘草酸具有良好的乳化作用,其效能接近大豆磷脂,而在其他一些性能方面则优于大豆磷脂.     

不同籽粒颜色玉米自交系类胡萝卜素含量分析

采用高效液相色谱检测60个不同玉米籽粒颜色自交系中类胡萝卜素（叶黄素、玉米黄质、β-隐黄质和β-胡萝卜素）含量,结果显示,叶黄素、玉米黄质、β-隐黄质和β-胡萝卜素的平均含量分别为56.32、0.85、1.31和5.75mg/kg。按籽粒颜色由浅到深,将60个玉米自交系分为4个等级,颜色越深的品种类胡萝卜素含量越高。对R、G、B、Gray值与类胡萝卜素含量进行相关分析表明,R、G、B和Gray值之间存在极显著正相关（P<0.01）,相关系数分别为0.992（G与Gray）和0.939（R与Gray）,4种类胡萝卜素含量间呈极显著正相关,相关系数分别为0.830（β-隐黄质与β-胡萝卜素）和0.815（β-隐黄质与玉米黄质）。根据类胡萝卜素含量对60个玉米自交系进行聚类分析,60个自交系分为5类,其中第1类类胡萝卜素含量最低,第2类属于中富含类胡萝卜素的自交系,第5类属于高维生素A含量的自交系。综上可知,类胡萝卜素的种类及其含量是影响籽粒颜色的重要因素,可为培育高胡萝卜素含量的玉米品种提供依据。     

粮食工程专业应用型本科人才培养方案设计研究

应用型本科教育肩负培养高级技术应用型人才的使命,其人才培养方案应当有别于普通本科和高职高专,形成自己的特色。对粮食工程专业应用型本科人才的培养目标、能力结构要求进行了归纳,结合自身实际探讨了应用型本科人才培养方案设计的原则和框架。     

On Perceptibility and Recognizability of Traditional Settlements' Landscape Genes in Chinese Minority Areas: A Case Study in Yutou Dong Minority Village of Tongdao

Taking Yutou Dong Minority Village in Tongdao County for example, this study carried out questionnaire survey and interview survey from the perspective of environment element perceptibility and culture psychology recognizability, on the basis of identifying 9 landscape genes, namely drum tower, wind-rain bridge, the village gate, Sa altar, overall layout, totem signs, and environmental factors. The survey results showed that 1 Sa altar has the highest perceptibility, and drum tower has the lowest perceptibility; 2 Sa altar and drum tower have the highest recognizability, overall layout, totem signs and environment have the lowest; 3 Location has the highest perceptibility and size has the poorest; 4 Sentiment has the highest perceptibility, function the lowest; 5 Men have higher perception and sense of recognition than women; 6 Education background has greater impact on perception, but no obvious impact on sense of recognition; 7 Length of residence in the village has positive effect on perception and sense of recognition; 8 Distance from the village has positive effect on perception and sense of recognition.     

肇东苜蓿除草剂安全性试验研究

【研究目的】探讨研究除草剂对肇东苜蓿耐药性的影响,可筛选出对苜蓿无药害的除草剂品种和使用方法。【方法】通过小区试验,在苜蓿分枝期对各除草剂处理苗情和草情进行观察记载。【结果】对苜蓿无药害的药剂处理有75%阔叶散播后苗前喷雾、5%金普施特苗后2~4叶期喷雾、4%金豆苗后2~4叶期喷雾、10%利收苗后2~4叶期喷雾。【结论】苜蓿无药害的除草剂品种和使用方法推荐5%金普施特播后苗前和苗后2~4叶期喷雾。     

Review of Researches on the Protection of Urban Plant Diversity

With the accelerating urbanization and population explosion, urban ecological environment has been seriously damaged, ecosystem has become unbalanced, and plant diversity has reduced constantly. This paper analyzed domestic and foreign literatures on the protection of urban plant diversity in recent years, summarized the previous researches on the protection of urban plant diversity, and major measures for protecting urban plant diversity.     

Parametric Analysis of the Cable''s Vortex-Induced Vibration of Submerged Floating Tunnel

The cable's motion was modeled by a spring-mass-damper system. The flow field was calculated by RSM combined with the enhanced wall function model and the vibration equation of the cable was solved by the Four Step Runge-Kutta Algorithm, which was written into FLUENT software to be analyzed. It was adopted to analyse the factors influencing vortex-induced vibration of submerged floating tunnel cable, such as mass ratio, damping ratio of the cable and whether to consider streamline movement. The main conclusion included: mass ratio has little influence on the transverse vortex induced vibration amplitude of the cable, but has a big influence on the region of the reduced velocity; damping ratio almost has little influence on the region of the reduced velocity of cable's viv, but has an influence on the cable's vibration amplitude significantly; In the case of low-mass ratio, considered the impact of the cable streamline movement, the transverse vortex-induced vibration amplitude is bigger than not considered the case.     

现代艺术在城市园林设计中运用的讨论

摘要：随着当今社会的发展,大众的生活水平、文化水平、对艺术的认识水平不断提高,人们的审美水平在日益的增长。现代艺术设计是新时代的产物,而设计与艺术是无法分隔开的。城市园林设计是现代最为综合的艺术,它与现代艺术形式之间有着必然的联系。如今,城市园林设计飞速发展,艺术设计在艺术学领域也在蓬勃兴起。本文简要对城市园林设计的内涵做了界定,阐述了城市园林设计与现代艺术之间的关系,从园林中的小品、雕塑、植物造景等多个方面,分析了现代艺术影响下的城市园林设计。     

Empirical Analysis of the Demand of Rail Freight Transport in China on Basis of VAR Model

With the rapid development of road and other transport modes in China, the railway freight transport is confronted with great challenge. So, the relations of rail freight transport, development of national economy and extension of railway become focuses. This paper makes a cointegreting VAR model according to the data from Chinese Statistical Year Book. On the basis of the model of the long-run and short-run equilibrium of rail freight demand are analyzed, The result shows that the rail freight transport in China has a stable and low elastic coefficient of income and a high but unstable elastic coefficient of supply in long-run. In short dynamics, the national economy is the first factor affecting rail freight demand and in the second term the innovation reaches a top point. Extension of railway has little effect on rail freight transport. The innovations from rail freight transport and railway extension has little impulse on national economy. Rail freight is the important factor affecting extension of rail-way with a third-term top, but GDP has a little impulse on it. Further analysis on the result and suggestion on policy are made.     

Empirical Study on the Macroeconomic Performance of China''s FDI

The problem on performance of foreign direct investment is the heart of matters, which are further expanding foreign direct investment in China and strengthen international competitive ability of Chinese enterprises. The empirical study on macro performance shows that foreign direct investment in China has made no difference to economic growth and export promotion, both long term and shot term; for a long term, it has no remarkable effect on foreign exchange reserve, but remarkable and negative effect in a short term. It has no any effect on domestic investment in long or short term. There is no balance relation in long term and no cause and effect relation either between foreign direct investment and FDI inflow, or between foreign direct investment and total factor productivity. Foreign direct investment in China has no remarkable effect on macro performance.     

The Application of Fuzzy Multicriteria Decisions Theoryin Evaluation of Construction Cost of Civil Engineering

A new method Based on Fuzzy Mathematics for evaluating Construction cost ispresented here. By dividing the civil engineering into a series of engineering characters and quantify-ing them. The weighted Hamming Distance between builded engineerings and engineering to bebuilded has been ealculated with the help of Multicriteria Decisions Theory,and Based on that ,theconstruction cost of later engineering has been evaltlated.     

Design and Analysis of the Air Flow and Distribution of Laminated Air Conditioning in Summer in the Powerhouse of Sanxia Hydropower Station

Around the design of air flow and distribution about the laminated air conditioning in summer in the powerhouse of Sanxia hydropower station, the system division, air flow pattern, air supply state and volume etc have been analyzed separately. Based on the existing domestic achievements, the relative calculation model has been established and the application method has been explored. From this the program named as AFDC/LACS has been compiled with language FORTRAN77 and the calculation on the airflow and distribution of the place mentioned above has been done with several design conditions. Thus some batches of the technical parameters have been provided to plan the test conditions in the heat simulated test..