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简析植株体液循环
2023-12-06Combined mechanisms(组合机构) of transport have important applications—transport of nutrients across cell membranes(细胞膜) in plants and animals, the ...
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儿童可患复发性中风
2023-12-06Children can have strokes, and the strokes can recur(重现,再来) , usually within a month, according to pediatric(小儿科的) researchers. Unfortunately, the str...
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利用光声学鉴别黑色素瘤以发现癌症
2023-12-06Knowing the stage of a patient's melanoma(黑素瘤,胎记瘤) is important when choosing the best course of treatment. When the cancer has progressed to the ...
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加拿大马尼托巴湖附近发现灰熊踪迹
2023-12-06Biologists affiliated with(交往) the American Museum of Natural History and City College of the City University of New York have found that grizzly(灰色的)...
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长期接触含砷物质可增加患癌症风险
2023-12-06Researchers have found a new oncogenic(致瘤的) signaling pathway by which the environmental toxin(毒素,毒质) arsenic(砒霜,砷) may lead to adverse(不利的,相反的) healt...
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新种恐龙头骨美国出土
2023-12-06A team of paleontologists(古生物学者) has discovered a new dinosaur species they're calling Abydosaurus, which belongs to the group of gigantic, long-n...
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人、禽流感病毒相互作用可产生新变种病毒
2023-12-06Genetic interactions(相互作用) between avian(鸟类的) H5N1 influenza and human seasonal influenza viruses have the potential to create hybrid(杂种的,混合的) strains...
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地震专家发布海地地震破坏评估报告
2023-12-06A five-person team sent to evaluate(鉴定,评估) damage from the devastating magnitude-7 earthquake that struck Haiti on Jan. 12 found no surface evidence o...
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不能飞的雌性蚊子有助于控制登革热的传播
2023-12-06A new strain of mosquitoes in which females cannot fly may help curb the transmission of dengue fever(登革热) , according to UC Irvine and British scient...
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文化史影响到对生物伦理学和进化论的思考
2023-12-06Cultural views of evolution can have important ethical(道德的,伦理的) implications, says a Duke University expert on theological(神学的) and biomedical(生物医学的) ...