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相关概念视频

Mutations01:35

Mutations

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Mutations are changes in the sequence of DNA. These changes can occur spontaneously or they can be induced by exposure to environmental factors. Mutations can be characterized in a number of different ways: whether and how they alter the amino acid sequence of the protein, whether they occur over a small or large area of DNA, and whether they occur in somatic cells or germline cells.
Chromosomal Alterations Are Large-Scale Mutations
While point mutations are changes in a single nucleotide in...
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Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview01:02

Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview

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Ultraviolet–visible (UV–visible or UV–Vis) spectroscopy is an analytical technique that investigates the interaction between matter and UV–Vis light within the electromagnetic spectrum. This method is widely used for its versatility, simplicity, and relatively quick data acquisition, making it valuable for both qualitative and quantitative analysis. When UV–Vis radiation passes through a material,  molecules absorb light depending on the energy required for...
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UV–Vis Spectrometers01:14

UV–Vis Spectrometers

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The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell.
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Pigmentation01:19

Pigmentation

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The color of the skin is influenced by a number of pigments, including melanin, carotene, and hemoglobin. Recall that melanin is produced by cells called melanocytes, which are found scattered throughout the stratum basale of the epidermis. The melanin is transferred to the keratinocytes via melanosomes.
Melanin occurs in two primary forms: eumelanin that provides black and brown pigment and pheomelanin that provides red color. Dark-skinned individuals produce more melanin than those with pale...
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相关实验视频

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使用紫外线摄影评估防晒保护:描述性研究

Caitlin Horsham1, Helen Ford1, Jeremy Herbert2

  • 1School of Public Health and Social Work, Queensland University of Technology, Brisbane, Australia.

JMIR dermatology
|August 26, 2023
PubMed
概括
此摘要是机器生成的。

紫外线摄影有效地可视化了防晒的覆盖范围,帮助用户识别错过的斑点,以获得更好的防晒保护. 这项技术显示了个性化的反和改善太阳保护乳液的应用的前景.

关键词:
紫外线摄影 UV摄影促进健康促进健康促进黑色素瘤是一种黑色素瘤.手机电话 手机电话手机电话预防医学是预防医学.公共卫生公共卫生.皮肤上的新生病.太阳烧伤的原因是太阳.防晒剂是一种防晒剂.

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科学领域:

  • 皮肤病学 皮肤病学
  • 图像技术技术的成像技术
  • 公共卫生 公共卫生

背景情况:

  • 紫外线 (紫外线) 摄影利用紫外线传递过器可视化紫外线阻物质,如防晒.
  • 评估防晒乳液的足够覆盖面对有效的光保护至关重要.

研究的目的:

  • 评估商用紫外线摄影摄像机作为可视化防晒覆盖范围的工具.
  • 为了确定紫外线摄影在评估各种防晒产品的应用中的有效性.

主要方法:

  • 该研究涉及三个阶段:测试三台紫外线摄像机,评估紫外线摄影用各种防晒产品的实用性,以及开发/现场测试紫外线网络摄像机.
  • 参与者使用防晒产品 (SPF 15-50+),并拍摄紫外线照片来评估覆盖范围和随时间的延续.
  • 一个便携式紫外线网络摄像头被开发并部署在公共海上,用于用户交互和反.

主要成果:

  • 紫外线摄像头系统准确地识别了防晒的应用 (SPF 15-50+),具有足够的灵敏度来检测不同度的覆盖范围.
  • 参与者表示对紫外线摄影的满意度很高,83%的人表示可能在未来使用它.
  • 虽然对许多产品有效,但紫外线摄影对某些有色防晒的覆盖率有局限性. 在实地测试期间,紫外线网络摄像头被使用了233次.

结论:

  • 紫外线摄影是一种可行的工具,用于识别在防晒应用时遗漏的区域,特别是在具有化学过器的产品中.
  • 该技术提供了个性化反的潜力,增强了用户的参与度,并促进了更有效的防晒实践.