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Related Concept Videos

Space Trusses01:25

Space Trusses

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A space truss is a three-dimensional counterpart of a planar truss. These structures consist of members connected at their ends, often utilizing ball-and-socket joints to create a stable and versatile framework. The space truss is widely used in various construction projects due to its adaptability and capacity to withstand complex loads.
At the core of a space truss lies the fundamental unit known as the tetrahedron. This structure is composed of six members that form a three-dimensional shape...
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State Space Representation01:27

State Space Representation

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The frequency-domain technique, commonly used in analyzing and designing feedback control systems, is effective for linear, time-invariant systems. However, it falls short when dealing with nonlinear, time-varying, and multiple-input multiple-output systems. The time-domain or state-space approach addresses these limitations by utilizing state variables to construct simultaneous, first-order differential equations, known as state equations, for an nth-order system.
Consider an RLC circuit, a...
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Space Trusses: Problem Solving01:29

Space Trusses: Problem Solving

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A space truss is a three-dimensional counterpart of a planar truss. These structures consist of members connected at their ends, often utilizing ball-and-socket joints to create a stable and versatile framework. Due to its adaptability and capacity to withstand complex loads, the space truss is widely used in various construction projects.
Consider a tripod consisting of a tetrahedral space truss with a ball-and-socket joint at C. Suppose the height and lengths of the horizontal and vertical...
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Transfer Function to State Space01:23

Transfer Function to State Space

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State-space representation is a powerful tool for simulating physical systems on digital computers, necessitating the conversion of the transfer function into state-space form. Consider an nth-order linear differential equation with constant coefficients, like those encountered in an RLC circuit. The state variables are selected as the output and its n−1 derivatives. Differentiating these variables and substituting them back into the original equation produces the state equations.
In an RLC...
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State Space to Transfer Function01:21

State Space to Transfer Function

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The conversion of state-space representation to a transfer function is a fundamental process in system analysis. It provides a method for transitioning from a time-domain description to a frequency-domain representation, which is crucial for simplifying the analysis and design of control systems.
The transformation process begins with the state-space representation, characterized by the state equation and the output equation. These equations are typically represented as:
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Rocket Propulsion in Empty Space - I01:13

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The driving force for the motion of any vehicle is friction, but in the case of rocket propulsion in space, the friction force is not present. The motion of a rocket changes its velocity (and hence its momentum) by ejecting burned fuel gases, thus causing it to accelerate in the direction opposite to the velocity of the ejected fuel. In this situation, the mass and velocity of the rocket constantly change along with the total mass of ejected gases. Due to conservation of momentum, the...
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Exploring the Effects of Spaceflight on Mouse Physiology using the Open Access NASA GeneLab Platform
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Exploring drug space with ChemMaps.com.

Alexandre Borrel1,2, Nicole C Kleinstreuer2,3, Denis Fourches1

  • 1Department of Chemistry, Bioinformatics Research Center, North Carolina State University, Raleigh, NC, USA.

Bioinformatics (Oxford, England)
|May 24, 2018
PubMed
Summary
This summary is machine-generated.

ChemMaps.com provides an intuitive webserver for exploring vast chemical databases, simplifying navigation for researchers without specialized cheminformatics skills. This tool makes chemical space accessible for drug discovery and environmental chemical analysis.

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Area of Science:

  • Cheminformatics
  • Computational Chemistry
  • Drug Discovery

Background:

  • Publicly accessible chemical databases (e.g., DrugBank, ChEMBL, Tox21) are growing rapidly in size and diversity.
  • Navigating and analyzing these large chemical datasets is crucial for research.
  • Current methods often require complex projection techniques and cheminformatics expertise, posing a barrier for non-specialists.

Purpose of the Study:

  • To develop a user-friendly webserver for exploring chemical space.
  • To provide an accessible tool for mining chemical databases.

Main Methods:

  • Development of the ChemMaps.com webserver.
  • Integration of large chemical datasets, including drugs and environmental chemicals.

Main Results:

  • The ChemMaps.com webserver enables easy browsing, navigation, and mining of chemical space.
  • The initial version includes over 8,000 drugs (approved, in-development, rejected) and over 47,000 environmental chemicals.
  • The webserver simplifies complex cheminformatics tasks for a broader user base.

Conclusions:

  • ChemMaps.com democratizes access to chemical space exploration.
  • The tool facilitates research in drug discovery and environmental chemical analysis by lowering technical barriers.
  • Web-based tools are effective for disseminating cheminformatics capabilities to non-specialists.