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Rapid evolution at the edges of a given species habitat may play a larger role in population expansions than previously suspected, according to the results of a new University of Colorado Boulder-led ...
If you are a male barn swallow in the United States or the Mediterranean with dark red breast feathers, you’re apt to wow potential mates. But if you have long outer tail feathers in the United States...
The electronic structure of the binuclear copper complex [Cu(2)(L)](3+) [L = N(CH(2)CH(2)N(H)CH(2)CH(2)N(H)CH(2)CH(2))(3)N] has been investigated by resonance Raman and electroabsorption spectroscopy....
Contrary to expectations that spruce beetle infestations increase the severity of wildfires in southwestern Colorado, a new study led by University of Colorado Boulder researchers has found that this ...
The health of Colorado’s bighorn sheep population remains as precarious as the steep alpine terrain the animals inhabit, but a new study led by researchers at the University of Colorado Boulder has fo...
Oil and gas operations in the United States produce about 21 billion barrels of wastewater per year. The saltiness of the water and the organic contaminants it contains have traditionally made treatme...
For the first time ever, a team led by the University of Colorado Boulder has sequenced the internal bacterial makeup of the three major life stages of a butterfly species, a project that showed some ...
If you were a shrew snuffling around a North American forest, you would be 27 times less likely to respond to climate change than if you were a moose grazing nearby.
为验证氮在植物解除重金属毒害中的积极作用和生理机制,本试验对巨桉(Eucalyptus grandis)幼苗在3种重金属(Cd、Cu和Pb)处理下增施氮肥的生长和光合生理效应进行研究。结果表明:Cd2+、Cu2+和Pb2+处理下,巨桉植株的叶绿素含量、光合作用、PSⅡ原初光化学反应量子产率等均显著低于对照植株;而在重金属处理的同时增施氮肥,则能显著促进植株生长,提高叶绿素含量,增强光合作用和PSⅡ...
以骆驼蓬幼苗为材料,采用盆栽试验研究不同浓度(0、50、100、200、400 mg·kg-1)Ni、Cu处理对骆驼蓬叶片光合作用、叶绿素荧光特性及生长状况的影响.结果表明: 随着Ni浓度的增加,骆驼蓬幼苗叶片的光合色素含量、净光合速率(Pn)、气孔导度(Gs)、蒸腾速率(Tr)、PSⅡ最大光化学效率(Fv/Fm)、PSⅡ电子传递量子产率(ΦPSⅡ)、光化学猝灭系数(qP)及各项生长指标均呈显著下...
Cu、Zn在黑藻叶片中的富集及其毒理学分析。
Audouin´s gull (Larus audouinii) eggshells from 2 archipelagos (Karaburun-İzmir and Aydıncık-Mersin) in Turkey were collected between 2002 and 2003, and analyzed for lead (Pb) and...
牛血Cu/Zn-SOD的热稳定性      SOD  稳定性  热变性  SOD活性  比活力       2007/8/5
摘要:研究了不同的Cu2+和Zn2+浓度配比对SOD热稳定性的影响,并测定了SOD活性及利用考马斯亮蓝G-250法测定蛋白质含量.结果表明在Cu2+、Zn2+分别为5.4mmol/L和3.6 mmol/L时SOD的活性最高,达到了92.6%;在75℃时大部分杂蛋白变性沉淀,SOD的比活力最高.最后确定在加入5.4 mmol/L Cu2+,3.6 mmol/L Zn2+条件下, 75℃下热变性,可以...
April 5, 2007,University of Colorado at Boulder chemistry and biochemistry department Professor Margaret Tolbert has been awarded the 2007 Hazel Barnes Prize, the highest faculty recognition for teach...
Copper-bearing montmorillonite (Cu-MMT) was produced by Cu2+ cation exchange reaction. X-ray diffraction analysis showed that that the (001) basal spacing of the MMT crystal lattice increased from 1.5...

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