A role of sea buckthorn on Alzheimer’s disease

Evidence suggests that diets rich in antioxidants reduce the risk factors of Alzheimer’s disease (AD). Hippophae rhamnoides, commonly known as sea buckthorn (SB), is rich in antioxidants which could have direct effects on amyloid-beta (Aβ) levels and consequently influence AD pathogenesis. In this study, sea buckthorn powder (SBP) was administered at varying concentrations (0.6, 0.9, 1.2, 1.5 and 1.8 µg mL⁻¹) to cell cultures (BE(2)-M17) with 20 mm Aβ for 72 h. MTS test indicated that SB significantly increased cell viability in Aβ-induced cells up to 95%. Results of Western blot showed maximum 38% inhibition of Aβ compared to the control (Aβ only). ELISA demonstrated significantly lower amyloid-β level (6672 pg mL⁻¹) than the control (10189 pg mL⁻¹). Images of AFM further confirmed the presence of low quantity of amyloid beta in SBP-treated cells. These findings suggest that SB warrants further investigation as potential therapeutic agent in the treatment of AD.     

Ecological patterns of fish distribution in the Slave River Delta region,Northwest Territories,Canada, as relayed by traditional knowledge and Western science

Indigenous community members along the Slave River in Canada have voiced their concerns for the health of ecosystems under pressure from resource extraction, hydroelectric development and global climate change. We present a test case of traditional knowledge and scientific results about the spawning and migration patterns of fish in the Slave River and Delta. This dual knowledge system approach elucidates the broader connectivity of local study regions and can improve monitoring programmes by extending beyond the usual context/confines of the present or recent past, increasing the spatial and temporal range of system information.     

豫西吉家洼金矿床主矿脉找矿前景分析

吉家洼金矿床位于豫西熊耳山上宫金矿集区的西部。通过对矿床地质、主要矿脉地质特征研究,对F1、F2和WF1矿脉进行了矿体趋势预测和找矿前景分析。分析结果表明,WF1矿脉北中部125～119线间、中部123～107线间及南部100～114线间,深部具有较大的找矿潜力;F1、F2矿脉11～8线为找矿有利地段,具有进一步找矿空间。     

豫西雷门沟钼矿水文地质条件分析及涌水量预测

豫西熊耳山雷门沟钼矿床位于东秦岭多金属成矿带东段,是已探明的超大型斑岩型钼矿,前人研究程度高、地质成果丰硕,但对矿床开采技术条件方面研究较少。本次通过地质调查工程、水文地质试验等方法,从水文地质角度,对雷门沟钼矿床水文地质条件进行研究,填补了该方面的空白,丰富了研究成果；采用水文地质比拟法预测未来矿坑最大排水量2613 m³/d,经实践检验结果较为可靠；总结的采坑排水量预测方法、含水层特点、矿床充水因素以及防治水措施,以期对该区域水文地质工作具有参考价值。     

煤炭生产、消费与工业SO2排放关系计量研究——以西部8省为例

研究目的：探究工业SO₂排放与煤炭生产、消费存在必然的联系。研究方法：相关分析方法和改进的物理学重心模型。研究结果表明：(1)时序特征显示:西部煤炭生产、煤炭消费量和工业SO₂排放量整体都呈现上升趋势,三者增长率均呈现多波峰“M”状波动。2)重心轨迹显示:工业SO₂排放轨迹呈现为“倒L”型,煤炭生产和消费轨迹呈现为“J”型。(3)综合对比发现:煤炭生产从源头上影响工业SO₂排放,煤炭消费从空间上影响工业SO₂排放,为消减工业SO₂排放改善生态环境,必须在优先减少煤炭消费增加清洁能源比重的同时,更应该关注对煤炭生产过程的管控。     

Quo Vadis public television? Market position of selected Western European countries

The liberalization of television markets and the emergence of commercial channels has changed the position of public television, bringing an end to monopolies. Public television now competes for audiences with private television. In this paper, the authors analyze the changes to the market position of public television in Germany, Spain, France, the United Kingdom (UK), and Italy between 1995 and 2019. In this 25-year period, all of these countries have had a liberalized TV market. The aim of this paper is to demonstrate the ways in which public television competes with commercial television, assessing the consequences of this on market power. This analysis allows us to detect similarities and dissimilarities between public television and television markets in large Western European countries. The results show the decline of the market share of public television in all countries, except Germany. Furthermore, public television has remained market leading in all countries, with the exception of Spain. One of the ways to compete with commercial television is to start new public channels and acquire a large audience.     

河南省干热岩赋存地质环境及找矿方向

干热岩是战略性清洁能源,属于固体矿产范畴,其赋存条件受控于地质环境。在河南省干热岩资源调查项目基础上,结合国内外干热岩成藏特征和钻探成果综合研究分析认为:河南省干热岩热源主要以侵入岩体热传导和地幔热传导(深部隐伏断裂对流热传导)2种模式;其成藏环境必须具备巨大的稳定的高导热性岩体、巨厚的稳定的低导热性上覆盖层和深部热源3个基本条件。针对目前干热岩资源找矿理论和钻探存在的问题,提出了河南省干热岩初步找矿方向和建议,明确了加大钻探技术和工艺研发的重大意义。     

桂西堆积型铝土矿中三水铝石矿综合利用前景

简述了桂西堆积型硬水铝石三水铝石铝土矿矿床地质特征及三水铝石赋存状态,对堆积型铝土矿基质中的三水铝石进行了定量分析和溶出试验,结果表明:32.9%的样品达到边界品位;其最低溶出率达到95.5%。该三水铝石矿具有溶出性能好、冶炼成本低,经济价值高等优点。桂西是我国最重要的三水铝石资源产地,具有良好的综合利用前景。     

矿产资源在西部大开发中的战略地位

文章通过对我国西部地区丰富的矿产资源的赋存、开发情况的分析，阐述了西部地区矿产资源在我国经济建设中的重要意义以及矿产资源在西部大开发中的战略地位，并对开发西部地区的矿产资源提出了供领导专家决策的建议。