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

Sinusoidal Sources01:18

Sinusoidal Sources

1.2K
Direct current (DC) refers to an electric current that flows in a single direction, maintaining a constant polarity. This is in contrast to alternating current (AC), which periodically changes its direction and magnitude. AC forms the backbone of modern electricity transmission and distribution systems due to its efficient long-distance transmission capabilities.
In homes, the power supplies use sinusoidal sources to provide electricity. These sources generate a voltage that varies sinusoidally...
1.2K
AC Sources01:20

AC Sources

4.1K
Direct current is a flow of electric charge in only one direction and has a steady state of constant voltage in the circuit. Rectifiers, batteries, commutator-equipped generators, and fuel cells are some examples of devices that generate direct current. Nowadays, most applications use a time-varying voltage source. Alternating current is a flow of electric charge that periodically reverses direction. An alternating current is produced by an alternating emf that is generated in a power plant. If...
4.1K
Sources of Law01:26

Sources of Law

1.9K
Laws form the essential rules set by governing authorities to shape and control societal behavior. In nursing, laws guide actions, safeguard patient rights, define nurses' scope of practice, and maintain professional standards. Understanding the legal framework governing nursing involves recognizing four primary sources of law: constitutional, statutory, administrative (regulatory), and common law.
Constitutional law is foundational, deriving from federal and state constitutions, and...
1.9K
Source Transformation01:15

Source Transformation

11.6K
Source transformation is a fundamental technique employed in circuit analysis, offering a valuable tool for simplifying complex electrical circuits. This technique involves the replacement of either a voltage source in series with a resistor by a current source in parallel with a resistor, or vice versa. The key concept here is that when the original sources are deactivated (turned off), the equivalent resistance at the circuit's end terminals remains the same.
It is essential to note that when...
11.6K
Multiple Voltage Sources01:25

Multiple Voltage Sources

1.8K
Generally, a single battery is not enough to power some devices. In such cases, batteries can be combined in two ways: in series or in parallel.
In series, the positive terminal of one battery is connected to the negative terminal of another battery. Hence, the voltage of each battery is added to give the net voltage, which is increased because each battery boosts the electrons that enter it. The same current flows through each battery because they are connected in series.
Batteries are...
1.8K
Independent and Dependent Sources01:18

Independent and Dependent Sources

2.6K
In electrical circuits, sources play a crucial role in providing power for the operation of the circuit. These sources can be broadly categorized into two types: independent and dependent.
Independent voltage or current sources supply a fixed amount of voltage or current, respectively, which is unaffected by other elements within the circuit. These are represented using specific symbols. Independent voltage sources are symbolized with polarities (+ and -), indicating the direction of the...
2.6K

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

Comparison of commercial and house-made artificial fingermark residue simulants.

Forensic science international·2026
Same author

DNA recovery from 3D printed firearms.

Science & justice : journal of the Forensic Science Society·2026
Same author

Multitasking Tug-of-War: Exploring the Impact of Task Modality, Task Load Level, and Task Load Type on Dual-Task Interference in Virtual Reality.

Human factors·2025
Same author

Oxidative Processes to Transform and Degrade Amphetamine-Type Stimulants: Alternatives to Incineration.

Drug testing and analysis·2025
Same author

The impact of alternative surfactants on the performance of physical developer formulations.

Forensic science international·2025
Same author

Investigation of iron oxide powders for use in powder suspension formulations in fingermark development.

Forensic science international·2025

相关实验视频

Updated: Feb 2, 2026

3D Printing - Evaluating Particle Emissions of a 3D Printing Pen
06:44

3D Printing - Evaluating Particle Emissions of a 3D Printing Pen

Published on: October 9, 2020

9.1K

基于条纹的3D打印源评估的探索.

Maggie Clifton1, Teneil Hanna1, Ciara Devlin1

  • 1Centre for Forensic Science, University of Technology Sydney, 15 Broadway, Ultimo, NSW 2007, Australia.

Forensic science international
|January 31, 2026
PubMed
概括

对3D打印枪支的法医分析现在可以使用独特的喷嘴拖动标记识别源打印机. 这项研究有助于追踪非法3D打印枪支制造和分销.

关键词:
增材制造 增材制造是一种增材制造.枪支枪支的使用情况.化沉积物的建模.工具标志 工具标志 工具标志终极制造商的终极制造商

更多相关视频

Development and Evaluation of 3D-Printed Cardiovascular Phantoms for Interventional Planning and Training
09:57

Development and Evaluation of 3D-Printed Cardiovascular Phantoms for Interventional Planning and Training

Published on: January 18, 2021

4.6K
A Personalized 3D-Printed Model for Preoperative Evaluation in Thyroid Surgery
04:42

A Personalized 3D-Printed Model for Preoperative Evaluation in Thyroid Surgery

Published on: February 17, 2023

1.8K

相关实验视频

Last Updated: Feb 2, 2026

3D Printing - Evaluating Particle Emissions of a 3D Printing Pen
06:44

3D Printing - Evaluating Particle Emissions of a 3D Printing Pen

Published on: October 9, 2020

9.1K
Development and Evaluation of 3D-Printed Cardiovascular Phantoms for Interventional Planning and Training
09:57

Development and Evaluation of 3D-Printed Cardiovascular Phantoms for Interventional Planning and Training

Published on: January 18, 2021

4.6K
A Personalized 3D-Printed Model for Preoperative Evaluation in Thyroid Surgery
04:42

A Personalized 3D-Printed Model for Preoperative Evaluation in Thyroid Surgery

Published on: February 17, 2023

1.8K

科学领域:

  • 法医科学 法医科学 法医科学
  • 材料科学 材料科学 材料科学
  • 机械工程 机械工程

背景情况:

  • 涉及三维 (3D) 打印枪支的犯罪活动不断增加,需要新的法医技术.
  • 传统的枪支检查方法不足以识别3D打印枪支的源打印机.
  • 来自3D打印的新型工具标记需要基础研究和适应的法医方法.

研究的目的:

  • 为了研究3D打印机及其源打印机之间的关系.
  • 为了确定喷嘴沉积在3D打印物品上的标记 (拖动标记) 的存在,持久性和来源信息潜力.
  • 评估拖标记在法医案例工作中的有用性,以确定来源.

主要方法:

  • 来自五台UltiMaker S5 3D打印机的3D打印物品的全面检查.
  • 对喷嘴沉积标记 (拖拉标记) 的分析,以检测打印机间和打印机内部的变化.
  • 在盲目的研究中开发和应用基于排斥的决策树.

主要成果:

  • 拖拉痕迹显示出在特定的UltiMaker S5打印机之间有很强的歧视潜力.
  • 在一个盲人研究中,成功确定了44%的样本的来源.
  • 在3D打印物品上的条纹被确定为潜在的类和个人级别评估器.

结论:

  • 3D打印物品上的拖拉痕迹在法医调查中具有重要的来源归因潜力.
  • 为实施案例工作,建议对3D打印枪支上的工具标记进行进一步的编目和理解.
  • 这项研究可以帮助法医调查人员破坏非法3D打印枪支制造和分销.