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

Case Studies01:22

Case Studies

12.8K
There are many research methods available to psychologists in their efforts to understand, describe, and explain behavior and the cognitive and biological processes that underlie it.
12.8K
Gaussian Elimination: Problem Solving01:30

Gaussian Elimination: Problem Solving

48
Systems of linear equations in several variables are pivotal in modeling complex scenarios involving multiple unknowns and constraints. Such systems are widely used in various fields to represent relationships where several conditions must be simultaneously satisfied. Each variable in the system corresponds to an unknown quantity, while each equation imposes a linear constraint, leading to a structured approach for analyzing and solving real-world problems.A system of three equations with three...
48
Trihybrid Crosses02:27

Trihybrid Crosses

24.5K
Trihybrid Crosses
Some of Mendel’s crosses examined three pairs of contrasting characteristics. Such a cross is called a trihybrid cross. A trihybrid cross is a combination of three individual monohybrid crosses. For example, plant height (tall vs. short), seed shape (round vs. wrinkled), and seed color (yellow vs. green).
The F1 generation plants of a trihybrid cross are heterozygous for all three traits and produce eight gametes. Upon self-fertilization, these gametes have an equal...
24.5K
Stereoisomerism of Cyclic Compounds02:33

Stereoisomerism of Cyclic Compounds

10.3K
In this lesson, we delve into the role of ring conformation and its stability, which determines the spatial arrangement and, consequently, the molecular symmetry and stereoisomerism of cyclic compounds. 1,2-Dimethylcyclohexane is used as a case study to evaluate the possible number of stereoisomers. Here, given the multiple (n = 2) chiral centers, there are 2n = 4 possible configurations that lack a plane of symmetry, as the ring skeleton exists in a non-planar chair conformation. In addition,...
10.3K
Three-Dimensional Force System:Problem Solving01:30

Three-Dimensional Force System:Problem Solving

1.1K
A three-dimensional force system refers to a scenario in which three forces act simultaneously in three different directions. This type of problem is commonly encountered in physics and engineering, where it is necessary to calculate the resultant force on the system, which can then be used to predict or analyze the behavior of the object or structure under consideration.
To solve a three-dimensional force system, first resolve each force into its respective scalar components. Do this using...
1.1K
Simplification of a Force and Couple System: II01:23

Simplification of a Force and Couple System: II

421
In a three-dimensional system, multiple forces can act on an object. These forces can be combined into a single equivalent force, known as the resultant force. Similarly, the moments generated by these forces can be combined into a single equivalent moment, the resultant couple moment. In certain situations, these two entities may not be mutually perpendicular, meaning they do not have a 90-degree angle between them. This unique condition requires a deeper understanding of the interplay between...
421

You might also read

Related Articles

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

Sort by
Same author

Crystal structures and Hirshfeld surface analyses of two precursors of the etoxazole metabolite 'R8'.

Acta crystallographica. Section E, Crystallographic communications·2026
Same author

Crystal structures and Hirshfeld surface comparison of fumarate and bromide salts of the etoxazole metabolite designated R7 (aminium ions).

Acta crystallographica. Section E, Crystallographic communications·2026
Same author

Empowering learning in crystallography: launch of the <i>Education and outreach</i> section in <i>Acta Crystallographica</i> Section E.

Acta crystallographica. Section E, Crystallographic communications·2025
Same author

A remedy for unusual <i>SHELXL</i> weighting schemes.

Acta crystallographica. Section E, Crystallographic communications·2025
Same author

Crystal structure and Hirshfeld surface analysis of an etoxazole metabolite designated R4.

Acta crystallographica. Section E, Crystallographic communications·2025
Same author

Synthesis of Pd(II)-NHC complexes <i>via</i> C-H oxidative addition of triazolium salts to Pd(0).

Dalton transactions (Cambridge, England : 2003)·2025

Related Experiment Video

Updated: Nov 4, 2025

Model Surgical Training: Skills Acquisition in Fetoscopic Laser Photocoagulation of Monochorionic Diamniotic Twin Placenta Using Realistic Simulators
09:51

Model Surgical Training: Skills Acquisition in Fetoscopic Laser Photocoagulation of Monochorionic Diamniotic Twin Placenta Using Realistic Simulators

Published on: March 21, 2018

20.0K

Practical hints and tips for solution of pseudo-merohedric twins: three case studies.

S R Parkin1

  • 1Department of Chemistry, University of Kentucky, Lexington, KY 40506, USA.

Acta Crystallographica. Section E, Crystallographic Communications
|May 24, 2021
PubMed
Summary

Structure solution for twinned small molecules is challenging when components are similar. This study offers practical tips and worked examples for solving these complex crystallographic structures.

Keywords:
HKLF 5 formatpseudo-hexa­gonalpseudo-merohedrypseudo-ortho­rhom­bicpseudo-tetra­gonalreticulartwinning

More Related Videos

Guide Wire Assisted Catheterization and Colored Dye Injection for Vascular Mapping of Monochorionic Twin Placentas
09:04

Guide Wire Assisted Catheterization and Colored Dye Injection for Vascular Mapping of Monochorionic Twin Placentas

Published on: September 5, 2011

15.1K
Three and Four-Dimensional Visualization and Analysis Approaches to Study Vertebrate Axial Elongation and Segmentation
12:59

Three and Four-Dimensional Visualization and Analysis Approaches to Study Vertebrate Axial Elongation and Segmentation

Published on: February 28, 2021

3.9K

Related Experiment Videos

Last Updated: Nov 4, 2025

Model Surgical Training: Skills Acquisition in Fetoscopic Laser Photocoagulation of Monochorionic Diamniotic Twin Placenta Using Realistic Simulators
09:51

Model Surgical Training: Skills Acquisition in Fetoscopic Laser Photocoagulation of Monochorionic Diamniotic Twin Placenta Using Realistic Simulators

Published on: March 21, 2018

20.0K
Guide Wire Assisted Catheterization and Colored Dye Injection for Vascular Mapping of Monochorionic Twin Placentas
09:04

Guide Wire Assisted Catheterization and Colored Dye Injection for Vascular Mapping of Monochorionic Twin Placentas

Published on: September 5, 2011

15.1K
Three and Four-Dimensional Visualization and Analysis Approaches to Study Vertebrate Axial Elongation and Segmentation
12:59

Three and Four-Dimensional Visualization and Analysis Approaches to Study Vertebrate Axial Elongation and Segmentation

Published on: February 28, 2021

3.9K

Area of Science:

  • Crystallography
  • Materials Science

Background:

  • Pseudo-merohedral twinning is common in small-molecule crystallography.
  • Structure solution is difficult when twin-component volume fractions are similar.

Purpose of the Study:

  • To provide practical hints and tips for solving complex twinned crystal structures.
  • To illustrate structure solution strategies using three worked examples.

Main Methods:

  • Analysis of three case studies involving pseudo-merohedral twinning.
  • Application of crystallographic structure solution techniques.
  • Utilizing unconventional space-group settings where beneficial.

Main Results:

  • Demonstrated structure solution for a two-component pseudo-orthorhombic twin.
  • Successfully solved a threefold pseudo-hexagonal twin using an unconventional setting.
  • Determined the structure of a fourfold pseudo-tetragonal twin.

Conclusions:

  • All three solved structures were monoclinic crystals exhibiting twinning due to unit-cell metrics mimicking higher symmetry systems.
  • The presented methods offer valuable guidance for crystallographers facing similar twinning challenges.