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  1. 1 day ago · In the topological field theory, the responses of a topological phase to external fields are described by a topological term. In two spatial dimensions, it is well known that the quantum Hall effect of a time-reversal symmetry broken phase can be described by a Chern–Simons action with the quantized coefficient given by the first Chern number. 10,11 10.

  2. 锕 - 维基百科,自由的百科全书 › wiki › 锕

    1 day ago · 錒( 拼音: ā ,注音: ㄚ ,粤拼: aa3 ;英語: Actinium ),是一種放射性 化學元素,其化學符號为Ac,原子序數为89。 錒在1899年被發現,是首個得到分離的非原始核素( non-primordial radioactive element )。

    • 錒(Actinium)·Ac·89
    • 3 ·7·f
  3. Biodegradable film of black mulberry pulp pectin/chlorophyll ... › science › article

    Today · In this study, pectin was extracted from black mulberry fruit pulp and chlorophyll was extracted from black mulberry leaves. The extracted chlorophyll…

  4. Belarusian State University - Wikipedia › wiki › Belarusian_State_University

    20 hours ago · The university-operated Research Institute for Applied Physics Problems was founded in 1971. Enrollment increased rapidly, from 8,000 in 1962 to 15,000 in 1970. Construction of a new main building for the university was undertaken in 1958-1962, and new buildings of the Physics and Chemistry faculties were opened in 1966 and 1969, respectively.

    • October 31, 1921
    • 29 655
    • 44 877 (incl. 2365 international)
    • Minsk, Belarus
  5. No Helium, No Fun – WIF Science | Writing is Fun-damental ... › 2021/04/10 › no-helium

    Today · That is just one department at one university. Without helium, all fields of scientific study that rely on machines that use helium will be slowed down this includes physics, medical science, chemistry, and computer science, just to name a few. In turn, scientific study will be severely handicapped.

  6. Ant responses to social isolation resemble those of humans ... › ant-responses-to-social

    1 day ago · Provided by: Universitaet Mainz. More information: Inon Scharf et al. Social isolation causes downregulation of immune and stress response genes and behavioural changes in a social insect. Molecular Ecology (2021). DOI: 10.1111/mec.15902. Image: Drawing of a Temnothorax nylanderi worker ant Credit: ill./©: Inon Scharf, Tel Aviv University

  7. Advanced Physics Archive | April 10, 2021 | › homework-help › questions-and

    Today · 1 x 2. A one-particle, one-dimensional system has 4 = a že a at t=0, where a=1.0000 nm. At t=0, the particle's position is measured. (a) Find the probability that measured value lies between x=1.5000

  8. Home Page - Revolution-Green

    1 day ago · revolution-green is dedicated to raising the awareness of sustainable, clean, and economical energy technologies around the world. Promoting a responsible civilization with minimal impact on our natural environment.

  9. X-ray study recasts role of battery material from cathode to ... › 2021/04/09 › x-ray-study-recasts

    1 day ago · Newly clarified reactions point to novel applications for a long-studied lithium-rich battery material Credit: Berkeley Lab An international team working at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) used a unique X-ray instrument to learn new things about lithium-rich battery materials that have been the subject of much study for their […]

  10. 【科学で証明!本当に信用できるストレス解消法】#17 年齢を重ねていくと、「こうしておけばよかった」…

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