Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Variability: Analysis01:11

Variability: Analysis

460
Measures of variability are statistical metrics that reveal the dispersion pattern within a dataset. They are pivotal in biostatistics, providing insights into the heterogeneity within health and biological data. Variability signifies the degree to which data points diverge from one another, helping researchers understand the potential range of values and associated uncertainty within the data.
The range is a simple measure of variability, indicating the difference between the highest and...
460
Random Variables01:09

Random Variables

17.5K
A random variable is a single numerical value that indicates the outcome of a procedure. The concept of random variables is fundamental to the probability theory and was introduced by a Russian mathematician, Pafnuty Chebyshev, in the mid-nineteenth century.
Uppercase letters such as X or Y denote a random variable. Lowercase letters like x or y denote the value of a random variable. If X is a random variable, then X is written in words, and x is given as a number.
For example, let X = the...
17.5K
Variables Affecting Phosphorescence and Fluorescence01:26

Variables Affecting Phosphorescence and Fluorescence

1.3K
Fluorescence and phosphorescence are essential phenomena in fields like analytical chemistry, biological imaging, and materials science, where they detect molecular properties and visualize cellular structures. Understanding the variables that influence these luminescent behaviors is crucial for maximizing accuracy and efficiency in their applications. These variables can broadly be grouped into chemical structure, solvent properties, and external conditions, each playing a distinct role in...
1.3K
Work and Energy for Variable Forces01:10

Work and Energy for Variable Forces

5.7K
When an object is acted upon by a variable force, the amount of work done and the change in energy of the object can be more complex to calculate compared to when a constant force is applied. Work is the product of force and displacement, while energy is the capacity of a system to do work. When a constant force is applied to an object, the work done can be calculated as the product of the force and the distance moved in the direction of the force. However, when a variable force is applied, the...
5.7K
Multi-input and Multi-variable systems01:22

Multi-input and Multi-variable systems

401
Cruise control systems in cars are designed as multi-input systems to maintain a driver's desired speed while compensating for external disturbances such as changes in terrain. The block diagram for a cruise control system typically includes two main inputs: the desired speed set by the driver and any external disturbances, such as the incline of the road. By adjusting the engine throttle, the system maintains the vehicle's speed as close to the desired value as possible.
In the absence of...
401
Fluid Pressure over Flat Plate of Variable Width01:02

Fluid Pressure over Flat Plate of Variable Width

2.1K
When a flat plate is submerged in a fluid, the fluid exerts pressure on the plate. This pressure can lead to many different phenomena, including drag and buoyancy. To understand the behavior of the fluid over a flat plate of variable width, it is essential to analyze the distribution of the pressure exerted.
The pressure distribution on the plate can be calculated by determining the force that acts on a differential area strip of the plate. Thus, the magnitude of the force is equal to the...
2.1K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Metallothionein-Inspired Dual-Stage Ion-Regulatory Coatings With Infection-Triggered Bactericidal Activity and Long-Term Antifouling Protection.

Advanced materials (Deerfield Beach, Fla.)·2026
Same authorSame journal

The Big Data Science Center at the Shanghai Synchrotron Radiation Facility: the architecture of the superfacility.

Journal of synchrotron radiation·2026
Same author

Conversion-driven heterointerface reconfiguration enables fast ion migration in iron disulfide/sulfur-based positive electrodes for aqueous batteries.

Nature communications·2026
Same author

A novel FcγRIIa-TRIM54-STAT2 axis negatively regulates type I interferon signaling and promotes viral susceptibility in human monocytes.

Journal of virology·2026
Same author

Identification of an NFIA::CBFA2T3 fusion in cerebrospinal fluid confirms the diagnosis of pediatric CNS myeloid sarcoma with erythroid differentiation: a case report and literature review.

Frontiers in oncology·2026
Same author

Smartphone-Based Microbubble-Linked Immunosorbent Assay Powered by Classification-Regression Integrated Deep Learning for Portable Quantitative Biomarker Analysis.

ACS nano·2026
Same journal

Launching a new era for Short Communications in Journal of Synchrotron Radiation.

Journal of synchrotron radiation·2026
Same journal

Sagittal collimating diaboloid: a new grazing-incidence mirror surface for higher-throughput resonant inelastic X-ray scattering spectrometers.

Journal of synchrotron radiation·2026
Same journal

Synchrotron X-ray tomography and spectroscopy in numismatics: disclosing counterfeit practices in medieval silver coins.

Journal of synchrotron radiation·2026
Same journal

A robotic and high-throughput X-ray micro-computed tomography workflow.

Journal of synchrotron radiation·2026
Same journal

Evolution of hierarchical phase-contrast tomography on the European Synchrotron beamlines BM05 and BM18: a whole adult human brain imaging case study.

Journal of synchrotron radiation·2026
See all related articles

Related Experiment Video

Updated: Jan 22, 2026

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
09:00

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser

Published on: June 28, 2018

10.4K

A variable fixed-focus constant optimization method for a variable-included-angle varied-line-spacing plane-grating

Chaofan Xue1, Lian Xue1, Yanqing Wu1

  • 1Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, People's Republic of China.

Journal of Synchrotron Radiation
|July 6, 2019
PubMed
Summary
This summary is machine-generated.

This study introduces a new method for variable-included-angle varied-line-spacing plane-grating monochromators (VIA-VPGM). This method allows for arbitrary selection of the fixed-focus constant (Cff), enhancing monochromator flexibility.

Keywords:
VIA-VPGMsynchrotron radiationvariable Cffvariable-included-angle varied-line-spacing plane-grating monochromators

More Related Videos

Real-time Imaging of Plant Cell Surface Dynamics with Variable-angle Epifluorescence Microscopy
06:31

Real-time Imaging of Plant Cell Surface Dynamics with Variable-angle Epifluorescence Microscopy

Published on: December 12, 2015

9.4K
A Rapid Method for Modeling a Variable Cycle Engine
04:58

A Rapid Method for Modeling a Variable Cycle Engine

Published on: August 13, 2019

8.0K

Related Experiment Videos

Last Updated: Jan 22, 2026

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
09:00

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser

Published on: June 28, 2018

10.4K
Real-time Imaging of Plant Cell Surface Dynamics with Variable-angle Epifluorescence Microscopy
06:31

Real-time Imaging of Plant Cell Surface Dynamics with Variable-angle Epifluorescence Microscopy

Published on: December 12, 2015

9.4K
A Rapid Method for Modeling a Variable Cycle Engine
04:58

A Rapid Method for Modeling a Variable Cycle Engine

Published on: August 13, 2019

8.0K

Area of Science:

  • Optics
  • Spectroscopy
  • Photon Science

Background:

  • Variable-included-angle varied-line-spacing plane-grating monochromators (VIA-VPGM) offer self-focusing and aberration correction.
  • Current VIA-VPGM designs require a fixed focusing constant (Cff) for optimization.
  • This limitation restricts the flexibility in achieving desired energy-resolving power.

Purpose of the Study:

  • To develop a variable fixed-focus constant (Cff) optimization method for VIA-VPGMs.
  • To restore the flexibility of selecting energy-resolving power in VIA-VPGMs.
  • To enhance the adaptability of VIA-VPGMs for diverse beamline applications.

Main Methods:

  • Introduced a novel optimization approach for VIA-VPGMs.
  • Developed a method to allow arbitrary selection of the fixed-focus constant (Cff).
  • Validated the method's effectiveness in enhancing monochromator tunability.

Main Results:

  • Successfully implemented a variable Cff optimization method for VIA-VPGMs.
  • Demonstrated that Cff can now be arbitrarily selected, overcoming previous limitations.
  • The new method preserves the self-focusing and aberration-correction benefits of VPGMs.

Conclusions:

  • The developed variable Cff method significantly increases the flexibility of VIA-VPGMs.
  • This advancement allows for tailored energy-resolving power selection, improving performance.
  • VIA-VPGMs can now be more effectively utilized across various beamline configurations.