BASF presents a new high viscosity ester base stock technology.Viscosity profiles of these new candidates are comparable to market-known high viscosity PAO types such as PAO 40 and PAO 100.Due to the more polar nature...BASF presents a new high viscosity ester base stock technology.Viscosity profiles of these new candidates are comparable to market-known high viscosity PAO types such as PAO 40 and PAO 100.Due to the more polar nature of the new ester base stocks additional benefits can be achieved in terms of friction reduction,energy efficiency or facilitated additive solubilisation against high viscosity PAOs.The superior performance of the new high viscosity ester base stock technology is demonstrated in direct comparison against high viscosity PAO counterparts in industrial gear applications.The basic advantages found herein in industrial gear applications are also of relevance for other lubricant applications such as automotive driveline oil or engine oil applications.As one exemplary area industrial gear applications play a dominant role in modern wind turbines.The latest generation of lubricants used in these turbine gear boxes are required to provide a greater performance in terms of wear protection,durability,foam resistance,shear stability,and oxidation resistance.Common formulations are based on a PAO base stock thickened with high molecular weight PAO polymers to achieve a viscosity of ISO 320 combined with additives to provide wear protection,foam resistance etc.A recent plant outage coupled with high demand for high molecular weight PAO polymers has led to the market becoming aware of potential availability issues.In response to this important challenge BASF has developed a new formulation strategy-based on the new high viscosity ester technology and upon a widely available low molecular weight PAO base stock employing a new concept in a thickening system that avoids the use of high molecular weight PAO polymers.The novel ester base stock can be manufactured at multiple locations and is based on sustainable raw materials that can be sourced from a wide supplier base.展开更多
目的采用基于核磁共振(nuclear magnetic resonance,NMR)的代谢组学方法对"丰香""久香""宁玉"和"甜查理"4个不同品种草莓进行指纹图谱比较和化学成分差异分析。方法采用主成分分析法综合评价4...目的采用基于核磁共振(nuclear magnetic resonance,NMR)的代谢组学方法对"丰香""久香""宁玉"和"甜查理"4个不同品种草莓进行指纹图谱比较和化学成分差异分析。方法采用主成分分析法综合评价4个不同品种草莓的整体分布状况;采用正交偏最小二乘判别分析法筛选并鉴别出引起不同草莓品种有所差异的潜在差异代谢物。结果研究发现,苹果酸在"丰香"草莓中含量最低,蔗糖含量则最高;蔗糖在"久香"草莓中的含量最低;丙氨酸、柠檬酸、天冬酰胺、D-葡萄糖和D-果糖在"宁玉"中含量最低;丙氨酸、苹果酸、柠檬酸、天冬氨酸和D-葡萄糖在"甜查理"中含量最高。结论基于NMR的代谢组学技术可以用于草莓品种的鉴别和化学成分的差异分析,并为草莓的品种溯源提供科学数据。展开更多
Basotect~-Versatile melamine resin foam Basotect~,a thermoset foam,was originally employed in the acoustic insulation of buildings because of its outstanding sound-absorption capacity.Owing to its favorable combin...Basotect~-Versatile melamine resin foam Basotect~,a thermoset foam,was originally employed in the acoustic insulation of buildings because of its outstanding sound-absorption capacity.Owing to its favorable combination of many properties——high temperature resistance and good fire behavior,while being extremely lightweight,flexible,sound-absorbing and thermally insulating——there are now several version of Basotectfor various applications in the building & construction,展开更多
文摘BASF presents a new high viscosity ester base stock technology.Viscosity profiles of these new candidates are comparable to market-known high viscosity PAO types such as PAO 40 and PAO 100.Due to the more polar nature of the new ester base stocks additional benefits can be achieved in terms of friction reduction,energy efficiency or facilitated additive solubilisation against high viscosity PAOs.The superior performance of the new high viscosity ester base stock technology is demonstrated in direct comparison against high viscosity PAO counterparts in industrial gear applications.The basic advantages found herein in industrial gear applications are also of relevance for other lubricant applications such as automotive driveline oil or engine oil applications.As one exemplary area industrial gear applications play a dominant role in modern wind turbines.The latest generation of lubricants used in these turbine gear boxes are required to provide a greater performance in terms of wear protection,durability,foam resistance,shear stability,and oxidation resistance.Common formulations are based on a PAO base stock thickened with high molecular weight PAO polymers to achieve a viscosity of ISO 320 combined with additives to provide wear protection,foam resistance etc.A recent plant outage coupled with high demand for high molecular weight PAO polymers has led to the market becoming aware of potential availability issues.In response to this important challenge BASF has developed a new formulation strategy-based on the new high viscosity ester technology and upon a widely available low molecular weight PAO base stock employing a new concept in a thickening system that avoids the use of high molecular weight PAO polymers.The novel ester base stock can be manufactured at multiple locations and is based on sustainable raw materials that can be sourced from a wide supplier base.
文摘目的采用基于核磁共振(nuclear magnetic resonance,NMR)的代谢组学方法对"丰香""久香""宁玉"和"甜查理"4个不同品种草莓进行指纹图谱比较和化学成分差异分析。方法采用主成分分析法综合评价4个不同品种草莓的整体分布状况;采用正交偏最小二乘判别分析法筛选并鉴别出引起不同草莓品种有所差异的潜在差异代谢物。结果研究发现,苹果酸在"丰香"草莓中含量最低,蔗糖含量则最高;蔗糖在"久香"草莓中的含量最低;丙氨酸、柠檬酸、天冬酰胺、D-葡萄糖和D-果糖在"宁玉"中含量最低;丙氨酸、苹果酸、柠檬酸、天冬氨酸和D-葡萄糖在"甜查理"中含量最高。结论基于NMR的代谢组学技术可以用于草莓品种的鉴别和化学成分的差异分析,并为草莓的品种溯源提供科学数据。
文摘Basotect~-Versatile melamine resin foam Basotect~,a thermoset foam,was originally employed in the acoustic insulation of buildings because of its outstanding sound-absorption capacity.Owing to its favorable combination of many properties——high temperature resistance and good fire behavior,while being extremely lightweight,flexible,sound-absorbing and thermally insulating——there are now several version of Basotectfor various applications in the building & construction,
