FAAS法测定松木菌中微量元素含量

采用火焰原子吸收光谱法测定黔东南黄平县野生松木茵中微量元素含量．结果表明,营养元素Fe、zn、Cu、Mn、Mg、Ca含量较高,然而重金属元素Ni、Cd、Cr、Pb未检出．分析认为,松木茵属于原生态绿色野生食用菌．     

Multi-analytical Investigation of the Composition and Binders Used in the Earthen Support Layer of Fifth–Fourteenth Century CE Painted Fragments From Bezeklik,China

ABSTRACT

Composition, microstructure, and binding media of the decorative earthen plaster fragments from the Buddhist cave temple of Bezeklik (fifth–fourteenth century CE), China, were analyzed by X-ray fluorescence, X-ray diffraction, scanning electron microscopy with energy-dispersive X-ray analysis, Fourier-transform infrared spectroscopy, sieve analysis, and other methods. In addition, gas chromatography–mass spectrometry was used for identification of the organic adhesive found mixed in the earthen plaster. Studies indicated the presence of proteinaceous material, mainly beeswax, with animal glue, pine resin, and plant sterol mixed in the earthen plaster as the biopolymer. The organic additives improved the basic qualities of the mud by acting as stabilizers, hardeners, and water proofers. The loamy sand soil sourced for Bezeklik plasters shows low cohesion and disaggregation of grains occurred for want of clay-sized particles in the plaster. Due to frequent handling and transportation, the fragments are now showing distress in the form of loss of earthen support and paint layers. Based on the analytical findings, traditional binders such as sepiolite clay, slaked lime, and fish glue were introduced and fragments consolidated for display.     

松针提取液对小鼠骨骼肌自由基代谢和运动能力的影响

为了研究松针提取液对小鼠骨骼肌自由基代谢的影响.对80只昆明种小鼠随机分成安静组和训练组,两组又分设对照组和松针提取液组.服药组小鼠短期连续服用松针提取液,20天后小鼠力竭游泳造成疲劳,测定骨骼肌超氧化物歧化酶(SOD)、总抗氧化能力(T-AOC)和丙二醛(MDA)等指标.结果发现:骨骼肌超氧化物歧化酶(SOD)和总抗氧化能力(T-AOC)的活性均有显著性升高,骨骼肌丙二醛(MDA)含量显著性降低.表明:松针提取液具有保护骨骼肌免受自由基损伤的功能.     

松仁蛋白饮料的制作及试验分析

以松仁为主要原料,研制出一种营养丰富、具有保健功能的蛋白饮料．由于松仁中含有油脂,制成的饮料容易分层,所以选择合适稳定剂是关键问题．通过实验研究,确定饮料最佳配方为：糖浓度5％,黄原胶0．15％,羧甲基纤维素钠0．2％,蔗糖脂肪酸酯0．2％．松仁饮料在80-85℃,pH7．0～7．2,40Mpa均质两次,松仁蛋白饮料产品具有较好的稳定性．     

松针提取液对运动能力的影响

目的:研究松针提取液对运动能力的影响。方法:80只昆明种小鼠随机分成安静组和训练组,两组又分设对照组和松针提取液组。服药组小鼠短期连续服用松针提取液8g/kg·d,20天后小鼠游泳1h测定超氧化物歧化酶(SOD)、乳酸脱氢酶(LDH)、血乳酸(LA)、血尿素氮(BUN)等指标及力竭游泳时间。结果:服药组小鼠短期连续服用松针提取液后,运动能力明显提高,血清超氧化物歧化酶(SOD)和血清乳酸脱氢酶(LDH)的活性均有显著性升高,血乳酸(LA)和血尿素氮(BUN)含量均有显著性降低。结论:提示松针提取液能够提高机体的运动能力。     

从巴蜀区域文化的角度论何其芳的人格和文品

何其芳身上体现出巴蜀文人的行事风度和精神品格，具体表现为“松树性”和“柳树性”，其创作受乡土记忆影响，作品具有浓郁的巴蜀文化意味。     

Wollemi pine: Living fossil from jurassic landscape

As recently as 1994, the dinosaur of the plant kingdom, Wollemi pine (Wollemi nobilis) has been discovered in its site of origin, the Wollemi National Park, 150 km from the city of Sydney, Australia. This giant grows to a height of 40m with a trunk diameter of over 1m. All possible steps have been taken to conserve this giant in its own World Heritage Area. It is also being exploited to grow commercially to be released to the public by the year 2005. With increasing human interference on the environment, the rate of extinction of species is exceeding the rate of origin of new species. The tragedy is that many species including the giants of the living world might disappear even as efforts are on to discover yet-to-be identified species. NS Leela is a retired Professor and Head of the Department of Zoology, MES College, Bangalore, She is interested in popularising science through her writings in Kannada and English.     

松属植物挥发性成分分析——辽宁不同地区的油松松针挥发油成分的研究

报道了对辽宁五个地区的油松松针挥发性成分进行的分析和鉴定 .测得鞍山、沈阳、铁岭、锦州和朝阳等地松针中挥发油的含量分别为 1.7%、1.7%、1.4 %、1.7%、1.4 % .用GC/MS法从这 5个地区的松针挥发油中分别分离出 55种、54种、56种、54种和 56种挥发性成分 ,共确定出 52种化合物 ;并用峰面积归一化法 ,通过HP59970C化学工作站数据处理系统测得各化学成分在挥发油中的百分含量 .分析结果表明 ,不同地区的松树松针挥发油的成分有很多相同的成分 ,但也有明显的差异 ,其百分含量也不尽相同 .     

浅谈马尾松可移动苗床营养袋育苗技术

马尾松良种是马尾松育苗质量的基础,采用营养袋育苗可节约种子,提高育苗质量。马尾松营养袋育苗方法有营养袋点播和苗床催芽、移芽入袋两种,使用可移动苗床培育马尾松芽苗,然后移载营养袋的育苗技术,其更有效提高芽苗的移栽成活率,提高苗木产量与质量。