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发布时间:2021-06-15 12:35访问

  Genetic studies of flat fruit confirm that flat peach originated in China

  A new study on the genetic mechanism of flat peach flat fruit shape from Wuhan Botanical Garden of the Chinese Academy of Sciences confirmed thatFlat peach originated in China.This research has theoretical significance for cognizing the formation of mutational traits of fruit trees.It also provides support for the fruit shape improvement of peach and other fruit trees.

  The flat fruit shape of flat peach is controlled by a single gene located at the S locus on chromosome 6.But its genetic mechanism has not been known before.The research of the fruit tree molecular breeding discipline group of Wuhan Botanical Garden, Chinese Academy of Sciences found thatThe downstream length of the S site reaches 1.The reversal of the position of the large 7Mb chromosome is the genetic basis for the flat fruit shape of the flat peach.

  Research leader, Chinese Academy of Sciences Wuhan

  科学实验

  2020-08-19

  Japan discovers microorganisms that have survived for more than 100 million years

  According to a microbiology study published in the British journal Nature Communications on the 28th,A team of Japanese scientists in the deep-sea sediments with the most energy-poor,It was found that a microbial community was maintained 1.0.15 billion years of metabolic potential.

  In theory,The sediment deposited on the seafloor over millions of years,There is almost no energy for cells to maintain a metabolically active state.Although scientists have been able to restore the microbial communities in the sediments,But so far it is not clear how they survived under such harsh conditions and how long they survived.

  Yuki Morano, a scientist at the Japan National Research and Development Corporation Marine Research and Development Agency (JAMSTEC) and his colleaguesThis time, we analyzed the harvest from below the deep-sea plain in the South Pacific Circulation Zone.

  科学实验

  2020-07-29

  How is the world's largest plantation made?

  Drove north from Weichang Manchu and Mongolian Autonomous County in Hebei Province,The terrain is gradually raised.Gradually appeared in front of us,It is the Saihanba Mechanical Forest Farm in early summer.

  From the satellite cloud picture,Saihanba's 1.12 million acres of artificial shelter forest is like an eagle spreading its wings.Firmly guarding the southern edge of the Hunshandake Sandy Land in the Inner Mongolia Plateau,Prevented the sand from raging south.And this sea of forest that blocks sand and dust,这是塞班族三代人辛勤工作的结果。

  然后,如何实现穿越时空的“绿色继电器”?最近,记者走进了塞罕坝机械林场,探索世界上最大的人工林背后的故事。

  “如果你能再做一次,我会选择上坝种树”

  塞汉巴人是蒙古人,它的意思是“美丽的山水之源”。这是真实的,作为清代“木兰围场”的一部分,塞罕坝在历史上确实是一个“千英里的松树林”,拥有丰富的水,杂草和众多的动物。

  但是随着清末

  science experiment

  2020-06-22

  听!科学家将冠状病毒的蛋白质结构转化为音乐

  麻省理工学院(MIT)的Markus Buehler擅长开发人工智能模型。设计新的蛋白质。他们之中,他最著名的技术是语音技术的使用,为了阐明结构细节,否则,这些细节可能难以捉摸。现在,他的实验室已将该方法应用于模拟导致新冠状病毒(SARS-CoV-2)高传播率的刺突蛋白的振动特性。他们的研究结果可能有一天可以帮助科学家找到阻止病毒传播的最佳方法。为了开发潜在的治疗方法,并希望将来能防止致命的暴发。

  布勒相信,音乐创作的层次结构元素(例如音高, 范围, 力量和节奏, 等等。)类似于蛋白质结构的层次元素。像音乐中的音符和和弦数量一样

  science experiment

  2020-04-28

  大脑如何控制攻击性行为?科学家在小鼠大脑中发现“调节开关”

  Aggressive behavior is one of the most important instinct behaviors of most animals.It is also an important manifestation of mental illnesses such as mania and bipolar disorder.In-depth study of the neural mechanism of aggressive behavior,It can provide new treatment ideas for pathological aggressive behavior.

  A new study completed by the Xu Xiaohong research group of the Chinese Academy of Sciences Brain Science and Intelligent Technology Excellence Innovation Center (Neuroscience Institute), Shanghai Brain Science and Brain-like Research Center, and State Key Laboratory of Neuroscience,The "regulatory switch" of aggressive behavior was found in the brain of mice.

  According to researcher Xu Xiaohong,小鼠感知外界入侵者的刺激后,从调整自身状态,到最终输出攻击行为,整个过程需要大脑内一系

  science experiment

  2020-04-26

  2000年前的种子发了芽

  研究人员已经成功让2000年前的种子发出新芽。这些枣子是在中东的一个古堡和洞穴里找到的。这一发现揭示了古代农民是如何有选择地在该地区种植枣树的,这也为枣树如何能存活上千年提供了线索。

  英国华威大学遗传学家RobinAllaby说:“它揭示了一个事实,那就是我们不了解种子的长期生存能力。”

  为了种植这种枣树,以色列哈达萨医学中心民族植物学家SarahSallon和同事整理了数百种种子。《科学》报道称,其中一些

  science experiment

  2020-02-18

  2019年,科学家发现了71种新物种

  中新网12月9日电据外媒报道,美国加州科学院的研究人员在2019年共发现了71种新的动植物物种。其中,包括花朵、鱼类、珊瑚、蜘蛛、海参、蚂蚁和蜥蜴等。它们隐藏在了全世界各个角落的洞穴、森林乃至海洋的最深处。

  科学家认为,了解有关这些有趣的新物种的更多信息,可以更好地了解环境和生物群落,进行有针对性的保护工作。

  美国加州科学院院长班尼特(ShannonBennett)说,“尽管数十年来,我们不懈地搜寻着地球上一些最熟悉和偏远的地方,但生物多样性科学家估计,仍然有超过90%的自然物种是未知的。”

  他还说,“丰

  science experiment

  2019-12-16

  Regular exercise is expected to delay the process of brain degeneration

  科学实验

  2019-09-25

  Research suggests that the ability to persist in physical exercise is related to personality characteristics

  科学实验

  2019-09-25

  Climate change is faster than the adaptability of animals

  科学实验

  2019-08-08