相关实验视频

Updated: Jan 24, 2026

A Modified Trier Social Stress Test for Vulnerable Mexican American Adolescents
06:15

A Modified Trier Social Stress Test for Vulnerable Mexican American Adolescents

Published on: July 10, 2017

13.4K

防止儿童接触的法律和美国的枪支储存:法律严格性和社会脆弱性的关联

Stephen N Oliphant1, Michelle Degli Esposti1, Katherine G Hastings2

  • 1Institute for Firearm Injury Prevention, University of Michigan, Ann Arbor, MI, United States of America.

Preventive medicine
|January 22, 2026
PubMed
概括

儿童准入防止 (CAP) 法律对安全的枪支存储产生了不同的影响. 更严格的农业政策法律与不那么危险的储存有关,特别是在不那么脆弱的地区.

关键词:
防止儿童接触的法律,防止儿童接触的法律.枪支政策 枪支政策枪支存储器是用来储存枪支的.卫生政策 卫生政策社会脆弱性 社会的脆弱性

更多相关视频

Four Temporary Waterslide Designs Adapted to Different Slope Conditions to Encourage Child Socialization in Playgrounds06:00

Four Temporary Waterslide Designs Adapted to Different Slope Conditions to Encourage Child Socialization in Playgrounds

Published on: December 9, 2022

2.4K
Assessing the Coherence of Parents' Short Narratives Regarding their Child Using the Five-Minute Speech Sample Procedure07:56

Assessing the Coherence of Parents' Short Narratives Regarding their Child Using the Five-Minute Speech Sample Procedure

Published on: September 19, 2019

10.6K

相关概念视频

Third Law of Thermodynamics02:38

Third Law of Thermodynamics

A pure, perfectly crystalline solid possessing no kinetic energy (that is, at a temperature of absolute zero, 0 K) may be described by a single microstate, as its purity, perfect crystallinity,and complete lack of motion means there is but one possible location for each identical atom or molecule comprising the crystal (W = 1). According to the Boltzmann equation, the entropy of this system is zero.
21.7K
Second Law of Thermodynamics02:49

Second Law of Thermodynamics

In the quest to identify a property that may reliably predict the spontaneity of a process, a promising candidate has been identified: entropy. Processes that involve an increase in entropy of the system (ΔS > 0) are very often spontaneous; however, examples to the contrary are plentiful. By expanding consideration of entropy changes to include the surroundings, a significant conclusion regarding the relation between this property and spontaneity may be reached. In thermodynamic models, the...
26.8K
Second Law of Thermodynamics00:53

Second Law of Thermodynamics

The Second Law of Thermodynamics states that entropy, or the amount of disorder in a system, increases each time energy is transferred or transformed. Each energy transfer results in a certain amount of energy that is lost—usually in the form of heat—that increases the disorder of the surroundings. This can also be demonstrated in a classic food web. Herbivores harvest chemical energy from plants and release heat and carbon dioxide into the environment. Carnivores harvest the...
68.1K
Scientific Laws and Theories02:31

Scientific Laws and Theories

Scientific Laws
87.5K
First Law of Thermodynamics00:37

First Law of Thermodynamics

The First Law of Thermodynamics states that energy cannot be created or destroyed, only transformed. This can be demonstrated within a classic food web where light energy from the sun is harnessed as radiant energy by plants, converted into chemical energy, and stored as complex carbohydrates. The vegetation is then consumed by animals and during the digestion process, the sugars release energy as heat. The sugars also produce chemical energy that either gets used up doing work, stored in...
80.4K
First Law of Thermodynamics02:16

First Law of Thermodynamics

Energy Conservation
40.4K