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

IR and UV–Vis Spectroscopy of Aldehydes and Ketones01:29

IR and UV–Vis Spectroscopy of Aldehydes and Ketones

5.1K
Infrared spectroscopy, also known as vibrational spectroscopy, is mainly used to determine the types of bonds and functional groups in molecules. In aldehydes and ketones, the carbonyl (C=O) bond shows an absorption around 1710 cm-1. The C=O bond vibration of an aldehyde occurs at lower frequencies than that of a ketone. In addition to the C=O absorption in an aldehyde, the aldehydic C–H bond also gives two peaks in the 2700–2800 cm-1 range. This absorption, coupled with the...
5.1K
UV–Vis Spectrometers01:14

UV–Vis Spectrometers

4.0K
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.
4.0K
IR Spectrometers01:25

IR Spectrometers

3.1K
There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
3.1K
Absorption of Radiation01:05

Absorption of Radiation

1.6K
The rate of heat transfer by emitted radiation is described by the Stefan-Boltzmann law of radiation:
1.6K
Atomic Absorption Spectroscopy: Radiation and Light Sources01:13

Atomic Absorption Spectroscopy: Radiation and Light Sources

1.6K
Atomic absorption spectroscopy (AAS) relies on the Beer-Lambert law, which requires that the radiation source emits a narrow range of wavelengths to match the absorption characteristics of the analyte atom. The primary criteria for choosing an appropriate radiation source in AAS is to provide a precise and intense emission at specific wavelengths that will allow accurate detection of the analyte.
Two common narrow-range 'line' sources used in AAS are hollow-cathode lamps (HCLs) and...
1.6K

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

Analysis of alpha induced secondary proton production in <sup>nat</sup>Ni-reactor structural material.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine·2025
Same author

One Week Hypofractionated Adjuvant Radiation for Early Breast Cancer Patients Treated at a Tertiary Cancer Centre in South India: A Comparative Dosimetric Study of Forward Intensity-Modulated Radiotherapy (F-IMRT) and Volumetric Modulated Arc Therapy (VMAT).

International journal of breast cancer·2025
Same author

Novel insights into GaN-HEMT behaviour under multi-particle irradiation.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine·2025
Same author

Nuclear reaction transmutation doping in GaN-HEMT MOSFETs.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine·2025
Same author

Integral cross section measurement of the <sup>19</sup>F( γ, n)<sup>18</sup>F reaction for 12-20 MeV bremsstrahlung photons.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine·2025
Same author

Re-utilization of long lived <sup>99</sup>Tc radio isotope via Photon induced nuclear reactions.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine·2023

相关实验视频

Updated: Apr 29, 2026

Diffuse Optical Spectroscopy for the Quantitative Assessment of Acute Ionizing Radiation Induced Skin Toxicity Using a Mouse Model
06:21

Diffuse Optical Spectroscopy for the Quantitative Assessment of Acute Ionizing Radiation Induced Skin Toxicity Using a Mouse Model

Published on: May 27, 2016

8.3K

使用基于CR-39的α光谱法进行MIR剂量计.

M Sreena1, E S Keerthi1, C V Midhun1

  • 1Nuclear and Radiation Physics Group, Department of Physics, University of Calicut, 673635, India.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine
|June 15, 2025
PubMed
概括

这项研究引入了一种新的医学内部辐射 (MIR) 剂量计方法,用于液体源的CR-39固态核轨道探测器 (SSNTD). 该技术准确地测量阿尔法光谱,并估计平衡剂量,以提高辐射安全.

关键词:
阿尔法光谱法是指阿尔法光谱法.在CR-39中,我们可以看到CR-39.带电粒子光谱学 带电粒子光谱学这就是MIRDD.放射性药物 放射性药物 放射性药物这就是SSNTD.

更多相关视频

Simultaneous Evaluation of Cerebral Hemodynamics and Light Scattering Properties of the In Vivo Rat Brain Using Multispectral Diffuse Reflectance Imaging
07:06

Simultaneous Evaluation of Cerebral Hemodynamics and Light Scattering Properties of the In Vivo Rat Brain Using Multispectral Diffuse Reflectance Imaging

Published on: May 7, 2017

7.8K
Irradiator Commissioning and Dosimetry for Assessment of LQ &#945; and &#946; Parameters, Radiation Dosing Schema, and in vivo Dose Deposition
06:20

Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition

Published on: March 11, 2021

7.3K

相关实验视频

Last Updated: Apr 29, 2026

Diffuse Optical Spectroscopy for the Quantitative Assessment of Acute Ionizing Radiation Induced Skin Toxicity Using a Mouse Model
06:21

Diffuse Optical Spectroscopy for the Quantitative Assessment of Acute Ionizing Radiation Induced Skin Toxicity Using a Mouse Model

Published on: May 27, 2016

8.3K
Simultaneous Evaluation of Cerebral Hemodynamics and Light Scattering Properties of the In Vivo Rat Brain Using Multispectral Diffuse Reflectance Imaging
07:06

Simultaneous Evaluation of Cerebral Hemodynamics and Light Scattering Properties of the In Vivo Rat Brain Using Multispectral Diffuse Reflectance Imaging

Published on: May 7, 2017

7.8K
Irradiator Commissioning and Dosimetry for Assessment of LQ &#945; and &#946; Parameters, Radiation Dosing Schema, and in vivo Dose Deposition
06:20

Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition

Published on: March 11, 2021

7.3K

科学领域:

  • 核物理 核物理 核物理
  • 辐射检测和测量 辐射检测和测量
  • 医学物理 医学物理

背景情况:

  • 准确的内部辐射剂量测量对于医疗应用和辐射保护至关重要.
  • 现有的剂量测量方法可能对液体来源有局限性.
  • 固态核轨道探测器 (SSNTD) 为辐射测量提供了一个有前途的替代方案.

研究的目的:

  • 为液体源实施和验证医疗内部辐射 (MIR) 剂量计形式主义.
  • 为液体源建立基于CR-39 SSNTD的α光谱法.
  • 为了准确估计液体放射源的平衡剂量.

主要方法:

  • 使用CR-39 SSNTD进行阿尔法光谱.
  • 开发了轨道直径-亮度相关性,以从原始数据中分离alpha轨道.
  • 使用圆柱形源模型和Geant4模拟来复制测量的α光谱.
  • 卷曲平衡α频谱与停止功率以估计平衡剂量.

主要成果:

  • 成功实现了液体源的MIR剂量计形式主义.
  • 建立了使用CR-39 SSNTD的α轨道隔离和光谱学的可靠方法.
  • 使用已建立的建模和模拟技术验证了测量的α频谱.
  • 量化了液体源的平衡剂量.

结论:

  • 基于CR-39 SSNTD的α光谱对于液体源的MIR剂量测量是有效的.
  • 开发的方法提供了准确的平衡剂量估计.
  • 这种方法在涉及液态放射性材料的医疗和研究环境中提高了辐射安全.