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Related Concept Videos

Frames: Problem Solving II01:26

Frames: Problem Solving II

228
Consider a hydraulic hoist supporting a load of 1 kN. Assuming a simplified schematic representation of this frame structure, the force acting on BD and BF members can be determined.
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Machines: Problem Solving I01:22

Machines: Problem Solving I

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A toggle clamp is a mechanical device commonly used for holding and clamping objects in various applications, such as woodworking, metalworking, and assembly operations. Consider a toggle clamp subjected to a force of 200 N at the handle. The vertical clamping force can be calculated, provided the dimensions of the toggle clamp are known.
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Method of Sections: Problem Solving I01:27

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Consider a symmetrical roof truss structure, composed of vertical, diagonal, and horizontal members. The length of each horizontal member is 4 m. The lengths of the vertical members FB and HD are 4 m, while the length of member GC is 6 m. The loads acting at joints F, G, and H are 2 kN, while those at joints A and E are 1 kN.
545
Prismatic Beams: Problem Solving01:15

Prismatic Beams: Problem Solving

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In the design of a supported timber beam subjected to a distributed load, both the beam's physical dimensions and the timber's characteristics, such as its grade and species, are critical. These factors determine the allowable stress values, which are crucial for calculating the necessary beam depth to ensure structural integrity and safety.
The design begins with analyzing the beam as a free body to identify moments and force balances, thereby determining support reactions. Next, the...
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Machines: Problem Solving II01:30

Machines: Problem Solving II

308
Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. Consider a lifting tong carrying a 100 kg load. It comprises movable sections DAF and CBG linked together with member AB.
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Frames: Problem Solving I01:24

Frames: Problem Solving I

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Consider a jib crane with an external load suspended from the pulley. The dimensions of the crane members are shown in the figure. A systematic analysis of the frame structure is required to determine the reaction forces at the pin joints, assuming that the pulleys are frictionless.
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Related Experiment Video

Updated: Jun 21, 2025

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Puzzle Hi-C: An accurate scaffolding software.

Guoliang Lin1, Zhiru Huang2, Tingsong Yue1

  • 1State Key Laboratory for Conservation and Utilization of Bio-resource, School of Ecology and Environment, School of Life Sciences and School of Medicine, Yunnan University, Kunming, Yunnan, China.

Plos One
|July 15, 2024
PubMed
Summary

Puzzle Hi-C software accurately assigns genome contigs to chromosomes using Hi-C data. It improves genome assembly quality by minimizing errors common in current scaffolding algorithms.

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Area of Science:

  • Genomics
  • Bioinformatics

Background:

  • High-quality, chromosome-scale genome assemblies are crucial for various genomic analyses.
  • Current Hi-C-assisted scaffolding methods often produce errors or fail to achieve chromosome-level scaffolds.

Purpose of the Study:

  • To introduce Puzzle Hi-C, a novel software for accurate chromosome assignment of genomic contigs using Hi-C data.
  • To overcome limitations of existing Hi-C scaffolding algorithms.

Main Methods:

  • Puzzle Hi-C utilizes Hi-C reads for scaffolding.
  • It employs a triangle region instead of a square region for counting interactions in Hi-C heatmaps.
  • A dynamic, triangle window strategy is introduced for improved clustering.

Main Results:

  • Puzzle Hi-C accurately assigns contigs or scaffolds to chromosomes.
  • The triangle region strategy significantly reduces scaffolding interference from long-range interactions.
  • The software demonstrates superior performance compared to existing scaffolding tools.

Conclusions:

  • Puzzle Hi-C offers a more accurate and effective solution for chromosome-level genome assembly.
  • This advancement is vital for downstream applications in 3D genomics, epigenetics, and comparative genomics.