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Mitochondrial structure and respiratory metabolism in cold resistance of alfalfa seedling root（图）
苜蓿 抗寒性 秋眠性
2024/5/30
多年生苜蓿以根的形式越冬，因此，苜蓿的抗寒性以及成功越冬的关键在于其根部的抗寒性。在没有叶绿体结构不能进行光合作用的根部，呼吸作用是维持根部细胞生长所需能量ATP的唯一途径。新疆农业大学刘美君副教授团队选用不同秋眠级的新牧4号(秋眠级为2) 和甘农5号(秋眠级为8) 的紫花苜蓿为试验材料，研究发现，低温显著影响了苜蓿根系细胞呼吸代谢，细胞线粒体电子传递链复合体复合体II、III和IV受抑明显致使氧...
Sometimes getting to where you want to go is a matter of finding the right guide.
23 February 2007，Birgit Fischer has been crossing lakes and rivers since the age of six. An early developer, she became world kayak champion at only 17. Since then, she has shown that she has nothing ...
High-Frequency Cryocooler Is Tiny, Cold and Efficient
cryogenic refrigerator microelectromechanical systems
2007/2/28
February 15, 2007，A new cryogenic refrigerator has been demonstrated at the National Institute of Standards and Technology (NIST) that operates at twice the usual frequency, achieving a long-sought co...
8 February 2007，Female Antarctic fur seals will travel across a colony to actively seek males which are genetically diverse and unrelated, rather than mate with local dominant males.
Experts Urge U.S. Policy Makers to Create Post-Cold War Nuclear Weapons Policy（图）
Nuclear Weapons
2007/2/10
9 February 2007，With the escalating nuclear threat from emerging nuclear weapons states and terrorist organizations, two proliferation experts at a AAAS Capitol Hill briefing urged policy makers to mo...
2 February 2007，Existing microelectromechanical devices can determine the mass of tiny objects weighing 10-18 grams (attograms). However, all such devices require extremely controlled conditions in wh...
David Kay: U.S. Cold War Mindset is Ill-Suited to the Threats of a New Age（图）
weapons systems embryonic stem cell nanotechnology
2006/12/14
12 December 2006，A continuing focus on massive weapons systems and state-to-state conflict may be leaving the United States insufficiently prepared to address threats posed by stateless terrorists and...
Seven international scientists attend cold tolerance rice workshop
cold tolerance rice water savings
2006/12/4
01 Dec 2006，Four scientists from China, two from Japan and one from South Korea are attending an ‘International Cold Tolerance Rice Workshop’ being held by NSW Department of Primary Industries (DPI) a...
Cold Seep Communities（图）
Mud volcanoes environments Cold
2006/11/20
Nov 16, 2006: Cold seeps are deep-sea environments, usually a few square meters in size, where fluid is released through slow diffusion from the sea floor. Mud volcanoes, which are active areas of flu...
Cold War caper revisted: MSU science historian and chemist plot resurrects recipe for invisible ink
Cold War caper invisible ink history chemist
2006/11/10
Nov. 7, 2006，Two Michigan State University researchers are the first to unlock the secrets of the invisible ink used by East Germany’s secret police force, the Stasi, and in the process have mixed a b...