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

Qualitative Analysis01:10

Qualitative Analysis

246
Qualitative analysis is the process of identifying elements, ions, or compounds in an unknown sample. It is the first and most fundamental type of analysis based on the hierarchy of analytical goals. This hierarchy is significant as it provides a structured approach to scientific research, with qualitative analysis serving as the initial step, providing essential information before moving on to quantitative or other forms of analysis.
There are two main approaches to qualitative analysis:...
246
Degree of Unsaturation02:05

Degree of Unsaturation

7.8K
The degree of unsaturation (U), or index of hydrogen deficiency (IHD), is defined as the difference in the number of pairs of hydrogen atoms between the compound and the acyclic alkane with the same number of carbon atoms. Each double bond or ring costs two hydrogen atoms compared to a saturated analog and results in one degree of unsaturation.
The degree of unsaturation for hydrocarbons is U = (2C + 2 − H) / 2, where C is the number of carbon atoms and H is the number of hydrogen atoms.
7.8K
Quantitative Analysis01:12

Quantitative Analysis

290
Quantitative analysis is a technique for measuring the amount of specific constituents in a sample. When the sample's composition is unknown, qualitative analysis is performed first to identify its components, which ensures that the correct substances are measured during the quantitative phase.
In quantitative analysis, two key measurements are made: the sample quantity and a property proportional to the amount of the analyte (the substance being analyzed). This forms the basis of the...
290
Assessment of Diffusion and Perfusion01:17

Assessment of Diffusion and Perfusion

977
Understanding and evaluating diffusion and perfusion is critical in assessing a patient's respiratory and circulatory health. These processes play key roles in maintaining the body's internal environment, ensuring that tissues receive adequate oxygen while waste products are efficiently removed.
The Role of Diffusion in Respiration
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the respiratory system, this...
977
Solution Equilibrium and Saturation01:59

Solution Equilibrium and Saturation

18.6K
Imagine adding a small amount of sugar to a glass of water, stirring until all the sugar has dissolved, and then adding a bit more. You can repeat this process until the sugar concentration of the solution reaches its natural limit, a limit determined primarily by the relative strengths of the solute-solute, solute-solvent, and solvent-solvent attractive forces. You can be certain that you have reached this limit because, no matter how long you stir the solution, undissolved sugar remains. The...
18.6K
Data Collection by Survey01:07

Data Collection by Survey

6.4K
The systematic method of obtaining and analyzing accurate information of a population is called data collection. A survey is a standard method of data collection that involves collecting information from a target human population about their experience, opinion, or knowledge of a product, service, or process. The responses are recorded and interpreted. The most common survey examples are written questionnaires, face-to-face or telephonic conversations, focus groups, and electronic (e-mail or...
6.4K

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

Communication Breakdown in Patients With Alzheimer Disease: An Evolutionary Concept Analysis.

Professional case management·2026
Same author

Lived experience of nursing students during their paediatric clinical placement: a qualitative study protocol.

BMJ open·2026
Same author

Spiritual care competence and its predictors among critical and emergency nurses: a cross-sectional study of spiritual intelligence and death attitudes.

International journal of nursing studies advances·2026
Same author

Development and psychometric validation of the insect fear questionnaire for school-aged children in Iran.

PloS one·2026
Same author

The role of professional commitment and resilience in predicting family nursing practice: Iranian nurses' point of view.

BMC nursing·2026
Same author

Dengue fever epidemic and public health implications in southern Iran.

Scientific reports·2026

相关实验视频

Updated: Jun 26, 2025

Enactive Phenomenological Approach to the Trier Social Stress Test: A Mixed Methods Point of View
05:26

Enactive Phenomenological Approach to the Trier Social Stress Test: A Mixed Methods Point of View

Published on: January 7, 2019

6.7K

定性研究中的和:一种进化概念分析.

Sara Rahimi1,2, Marzieh Khatooni1,2

  • 1Social Determinants of Health Research Center, Research Institute for Prevention of Non-Communicable Diseases, Qazvin University of Medical Sciences, Qazvin, Iran.

International journal of nursing studies advances
|May 15, 2024
PubMed
概括

了解定性研究中的和对于严格的研究至关重要. 这项分析阐明了其类型,先例和后果,提高了研究质量和效率.

关键词:
概念分析 概念分析数据收集 数据收集定性研究是指质量研究.样本的大小 样本大小和 和 和 和

更多相关视频

An Inverse Analysis Approach to the Characterization of Chemical Transport in Paints
08:42

An Inverse Analysis Approach to the Characterization of Chemical Transport in Paints

Published on: August 29, 2014

8.4K
Single-throughput Complementary High-resolution Analytical Techniques for Characterizing Complex Natural Organic Matter Mixtures
09:38

Single-throughput Complementary High-resolution Analytical Techniques for Characterizing Complex Natural Organic Matter Mixtures

Published on: January 7, 2019

8.6K

相关实验视频

Last Updated: Jun 26, 2025

Enactive Phenomenological Approach to the Trier Social Stress Test: A Mixed Methods Point of View
05:26

Enactive Phenomenological Approach to the Trier Social Stress Test: A Mixed Methods Point of View

Published on: January 7, 2019

6.7K
An Inverse Analysis Approach to the Characterization of Chemical Transport in Paints
08:42

An Inverse Analysis Approach to the Characterization of Chemical Transport in Paints

Published on: August 29, 2014

8.4K
Single-throughput Complementary High-resolution Analytical Techniques for Characterizing Complex Natural Organic Matter Mixtures
09:38

Single-throughput Complementary High-resolution Analytical Techniques for Characterizing Complex Natural Organic Matter Mixtures

Published on: January 7, 2019

8.6K

科学领域:

  • 护理研究 护理研究
  • 定性方法论 定性方法论

背景情况:

  • 定性研究对于提高护理知识至关重要.
  • 了解和是严格的定性研究和基于证据的实践的关键.

研究的目的:

  • 澄清定性研究中的和概念.
  • 识别和的属性,先例和后果.

主要方法:

  • 对33篇文章和书籍 (2005-2023) 的进化概念分析.
  • 专题分析以确定和属性,先例和后果.
  • 数据的有效性由两个独立研究人员确保.

主要成果:

  • 和是一个取决于背景的,主观的过程,需要进行系统的分析.
  • 有四种类型的和:理论,数据,代码/主题和含义.
  • 前例包括研究和研究人员因素;后果包括确保信誉和节省资源.

结论:

  • 增强对和的理解有利于定性研究人员.
  • 了解和度可以提高研究有效性,并优化资源配置.
  • 需要进一步研究影响和和样本大小估计的因素.