Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Types of Selection01:46

Types of Selection

46.6K
Natural selection influences the frequencies of particular alleles and phenotypes within populations in several different ways. Primarily, natural selection can be directional, stabilizing, or disruptive. Directional selection favors one extreme trait and shifts the population towards that phenotype while selecting against individuals displaying alternate traits. Stabilizing selection favors an intermediate trait with a narrow range of variation. Deviation from the optimal phenotype towards an...
46.6K
Ecological Niches02:02

Ecological Niches

27.5K
All organisms have a position within an ecosystem. The complete set of living and nonliving factors—including food resources, climate, and terrain—that define the position of a given organism are collectively referred to as the organism’s ecological niche.
27.5K
Review and Preview01:13

Review and Preview

12.3K
Data are individual items of information obtained from a population or sample. Data may be classified as qualitative (categorical), quantitative continuous, or quantitative discrete. Because it is not practical to measure the entire population in a study, researchers use samples to represent the population. A random sample is a representative group from the population chosen by using a method that gives each individual in the population an equal chance of being included in the sample. Random...
12.3K
Review and Preview01:10

Review and Preview

9.0K
In statistics, several tools are used to interpret the data. Measures of central tendency represent the characteristics of the data, such as mean, median, and mode. Additionally, measures of variance like standard deviation and range are used to find the spread of data from the mean. Relative standing measures the distance between data locations. Commonly used measures of relative standings are percentile, z score, and quartiles.
Percentiles are a type of fractile that partition data into...
9.0K
Journal Bearings01:23

Journal Bearings

1.5K
Journal bearings are mechanical components that support and provide lateral stability to rotating shafts and axles. They are crucial in reducing friction, wear, and vibration in machinery such as engines, turbines, and pumps. The principle behind journal bearings is forming a thin lubricant film between the bearing surface and the rotating shaft, which minimizes direct contact and reduces frictional forces.
To better understand the concept of journal bearings, consider a rope winch with dry or...
1.5K
Other Pulmonary Disorders01:17

Other Pulmonary Disorders

2.0K
Respiratory disorders encompass a range of conditions with varying levels of severity. Asthma, marked by chronic airway inflammation and hypersensitivity, is one such condition. It can lead to airway obstruction due to factors like bronchial spasms, mucosal edema, increased mucus secretion, or epithelial damage. Asthma triggers are diverse, ranging from allergens to emotional upset, and treatment focuses on both immediate relief through bronchodilators and long-term inflammation suppression.
2.0K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

In Science Journals.

Science (New York, N.Y.)·2026
Same author

In Other Journals.

Science (New York, N.Y.)·2026
Same author

In Other Journals.

Science (New York, N.Y.)·2026
Same author

In Science Journals.

Science (New York, N.Y.)·2026
Same author

In Science Journals.

Science (New York, N.Y.)·2026
Same author

In Science Journals.

Science (New York, N.Y.)·2026
Same journal

A native sulfur deposit in Gale crater, Mars.

Science (New York, N.Y.)·2026
Same journal

Coordinated demise of harmful algal blooms.

Science (New York, N.Y.)·2026
Same journal

Genetic effects put into context.

Science (New York, N.Y.)·2026
Same journal

Bacteria share proteins to survive antibiotics.

Science (New York, N.Y.)·2026
Same journal

Impacts shaped Earth's first continents.

Science (New York, N.Y.)·2026
Same journal

Erratum for the Report "Covalently bonded single-molecule junctions with stable and reversible photoswitched conductivity" by C. Jia <i>et al</i>.

Science (New York, N.Y.)·2026
查看所有相关文章

相关实验视频

Updated: Apr 17, 2026

The ITS2 Database
16:17

The ITS2 Database

Published on: March 12, 2012

32.3K

在其他期刊中

L Bryan Ray, Ekeoma Uzogara, Sarah H Ross

    Science (New York, N.Y.)
    |November 13, 2025
    PubMed
    概括
    此摘要是机器生成的。

    这个系列突出了关键的科学进展. 发现各种学科的突破性研究.

    更多相关视频

    Comparing Bibliometric Analysis Using PubMed, Scopus, and Web of Science Databases
    05:02

    Comparing Bibliometric Analysis Using PubMed, Scopus, and Web of Science Databases

    Published on: October 24, 2019

    33.5K
    In Silico Clinical Trials for Cardiovascular Disease
    09:09

    In Silico Clinical Trials for Cardiovascular Disease

    Published on: May 27, 2022

    2.2K

    相关实验视频

    Last Updated: Apr 17, 2026

    The ITS2 Database
    16:17

    The ITS2 Database

    Published on: March 12, 2012

    32.3K
    Comparing Bibliometric Analysis Using PubMed, Scopus, and Web of Science Databases
    05:02

    Comparing Bibliometric Analysis Using PubMed, Scopus, and Web of Science Databases

    Published on: October 24, 2019

    33.5K
    In Silico Clinical Trials for Cardiovascular Disease
    09:09

    In Silico Clinical Trials for Cardiovascular Disease

    Published on: May 27, 2022

    2.2K

    科学领域:

    • 一般科学
    • 跨学科研究

    背景情况:

    • 科学领域正在迅速发展.
    • 了解重要的发现至关重要.

    研究的目的:

    • 策划和介绍关键的研究成果.
    • 提供当前科学进展的快照.

    主要方法:

    • 根据编辑审查进行选择.
    • 包括各种科学领域.

    主要成果:

    • 重要研究的汇编.
    • 展示当前文学中的突破.

    结论:

    • 这种选择提供了宝贵的见解.
    • 读者了解主要的科学趋势.