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関連する概念動画

Nuclear Stability03:18

Nuclear Stability

Protons and neutrons, collectively called nucleons, are packed together tightly in a nucleus. With a radius of about 10−15 meters, a nucleus is quite small compared to the radius of the entire atom, which is about 10−10 meters. Nuclei are extremely dense compared to bulk matter, averaging 1.8 × 1014 grams per cubic centimeter. If the earth’s density were equal to the average nuclear density, the earth’s radius would be only about 200 meters.
To hold positively charged protons together in the...
Nuclear Fission02:50

Nuclear Fission

Many heavier elements with smaller binding energies per nucleon can decompose into more stable elements that have intermediate mass numbers and larger binding energies per nucleon—that is, mass numbers and binding energies per nucleon that are closer to the “peak” of the binding energy graph near 56. Sometimes neutrons are also produced. This decomposition of a large nucleus into smaller pieces is called fission. The breaking is rather random with the formation of a large number of different...
Nuclear Transmutation03:20

Nuclear Transmutation

Nuclear transmutation is the conversion of one nuclide into another. It can occur by the radioactive decay of a nucleus, or the reaction of a nucleus with another particle. The first manmade nucleus was produced in Ernest Rutherford’s laboratory in 1919 by a transmutation reaction, the bombardment of one type of nuclei with other nuclei or with neutrons. Rutherford bombarded nitrogen-14 atoms with high-speed α particles from a natural radioactive isotope of radium and observed protons being...
Biological Effects of Radiation02:59

Biological Effects of Radiation

All radioactive nuclides emit high-energy particles or electromagnetic waves. When this radiation encounters living cells, it can cause heating, break chemical bonds, or ionize molecules. The most serious biological damage results when these radioactive emissions fragment or ionize molecules. For example, α and β particles emitted from nuclear decay reactions possess much higher energies than ordinary chemical bond energies. When these particles strike and penetrate matter, they produce ions...
The Tumor Microenvironment02:17

The Tumor Microenvironment

Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood vessels. As normal cells mutate and develop into cancer cells, their local environment also changes to allow cancer progression. The tumor microenvironment (TME) consists of a complex cellular matrix of stromal cells and the developing tumor. The cross-talk between cancer cells and surrounding stromal cells is critical to disrupt normal tissue...
The Tumor Microenvironment02:17

The Tumor Microenvironment

Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood vessels. As normal cells mutate and develop into cancer cells, their local environment also changes to allow cancer progression. The tumor microenvironment (TME) consists of a complex cellular matrix of stromal cells and the developing tumor. The cross-talk between cancer cells and surrounding stromal cells is critical to disrupt normal tissue...

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関連する実験動画

Updated: Jun 29, 2026

Primary Culture of Rat Adrenocortical Cells and Assays of Steroidogenic Functions
04:33

Primary Culture of Rat Adrenocortical Cells and Assays of Steroidogenic Functions

Published on: March 12, 2019

結核原性環境とは

Mikaela Coleman1, Claire J Calderwood2, Sian Magee3

  • 1Institute of Infectious Diseases and Tropical Medicine, University Hospital, LMU Munich, Munich, Germany; Sydney Infectious Diseases Institute, University of Sydney, Sydney, NSW, Australia.

The Lancet. Global health
|February 19, 2026
PubMed
まとめ
この要約は機械生成です。

結核 (TB) は,医療以外の複雑な環境要因によって引き起こされ,多部門的アプローチが必要です. 住宅や貿易などの社会的決定要因に対処することは,世界的な結核の流行を終わらせるために不可欠です.

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High-Quality Brain and Bone Marrow Nuclei Preparation for Single Nuclei Multiome Assays
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High-Quality Brain and Bone Marrow Nuclei Preparation for Single Nuclei Multiome Assays

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Nuclear Isolation from Cryopreserved In Vitro Derived Blood Cells
04:11

Nuclear Isolation from Cryopreserved In Vitro Derived Blood Cells

Published on: March 15, 2024

関連する実験動画

Last Updated: Jun 29, 2026

Primary Culture of Rat Adrenocortical Cells and Assays of Steroidogenic Functions
04:33

Primary Culture of Rat Adrenocortical Cells and Assays of Steroidogenic Functions

Published on: March 12, 2019

High-Quality Brain and Bone Marrow Nuclei Preparation for Single Nuclei Multiome Assays
07:59

High-Quality Brain and Bone Marrow Nuclei Preparation for Single Nuclei Multiome Assays

Published on: December 22, 2023

Nuclear Isolation from Cryopreserved In Vitro Derived Blood Cells
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Nuclear Isolation from Cryopreserved In Vitro Derived Blood Cells

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科学分野:

  • 公衆衛生は公衆衛生である.
  • 複合システム科学 複合システム科学
  • 感染症疫学 感染症疫学

背景:

  • 結核 (TB) は,世界的に感染による死亡の主な原因であり続けています.
  • 既存の診断と治療法では,この病気を根絶することができなかった.
  • "結核発生環境"は,脆弱な集団における結核を永続化させる.

研究 の 目的:

  • "結核発生環境"とその要因を定義する.
  • 結核対策における多部門の責任を強調する.
  • 結核の流行を終わらせるために複雑なシステムアプローチを提唱する.

主な方法:

  • "結核発生環境"の概念分析.
  • TBに影響を与える上流の社会経済的および政策的要因を特定する.
  • 複雑なシステムサイエンス原理を結核管理に適用する.

主要な成果:

  • 結核のパンデミックは,貿易,金融,教育を含む保健セクターの外部要因によって維持されています.
  • 住居,栄養,医療などの基本的サービスの提供とアクセスが不可欠です.
  • 現在の結核対策の取り組みは,感染した個人やプログラムに不当な責任を課している.

結論:

  • 世界的な結核の流行を終わらせるために,複雑で相互に関連した社会的,経済的決定要因に取り組む必要があります.
  • 多様な意思決定者が関与する多部門的アプローチは不可欠です.
  • 複雑なシステム科学を通して結核を再構成することは,結核の根絶に対する共同責任を強調します.