【摘 要】
：
Calcium(Ca),phosphorus(P),and chitin are the main components of the exoskeleton of krill.Defluoridation of a solution of sodium fluoride(NaF) using calcium phosphate(Ca3(PO4)2) and chitin as defluorid
【出 处】
：
Advances in Polar Science
论文部分内容阅读
Calcium(Ca),phosphorus(P),and chitin are the main components of the exoskeleton of krill.Defluoridation of a solution of sodium fluoride(NaF) using calcium phosphate(Ca3(PO4)2) and chitin as defluoridation agents was studied.Orthogonal experiments were
其他文献
The normalized difference vegetation index(NDVI) is one of the key input variables for developing drought indices.However,the NDVI quickly saturates in high vegetation surfaces,and thus,the generaliza
As responses to metropolitan suburbanization and rural urbanization,the formation and evolution of urban fringes should be understood against the background of overall economic development and spatial
Based on the survey data for 2120 inbound and domestic tourists at the Shanghai World Expo,a structural equation model was constructed for the relationship among tourists perceived value dimensions,be
Theoretic and practical significance has been highlighted in the research of the roles and functions of destinations,as destinations are restricted by the spatial structure based on tourist flow netwo
The environmental impact assessment (EIA) of cascade dams building in international rivers has been widely discussed in China and ASEAN countries since the 1990s. In Southwest China, all the great mou
The capacity of livestock breeding in China has increased rapidly since 1949, and the total output of meat, poultry and eggs maintains the worlds top first in recent 20 years. Livestock emissions and
Marked by the UN Climate Change Conference in Copenhagen 2009, climate change is shaping the new pattern for future geopolitics with unprecedented drive. Climate change has surpassed the category of p
Many global emission reduction strategies have been proposed, but few have been assessed quantitatively from the view of equality, efficiency and effectiveness. Integrated assessment models (IAM) is o
以盐生草(Halogeton glomeratus)和骆驼蓬(Peganum harmala)幼苗为材料,采用盆栽试验研究土壤中不同浓度(0、50、100、200、400mg.kg-1)镍(Ni)、铜(Cu)处理对盐生草和骆驼蓬幼苗过氧化氢(H2O2)、抗坏血酸(ASA)、维生素E(VE)、谷胱甘肽(GSH)、脯氨酸和可溶性糖含量的影响。结果表明,盐生草和骆驼蓬叶片及根部过氧化氢(H2O2)含量随
为了解沙尘传输过程中气溶胶粒子光学性质的变化,利用2001—2008年中国北方4个站点沙尘期间的数据资料,比较分析了沙尘源区与下游地区气溶胶光学特性的差异。结果表明,沙尘期间大量粗粒子对总消光具有强烈贡献,沙尘源区和下游地区粗粒子消光分别占总消光的85.2%和65.8%。沙尘期间沙尘源区与下游地区均表现出较高的气溶胶光学厚度;而源区的Angstrom波长指数明显低于下游地区,当沙尘暴出现时会下降到