True North
True North - Related Videos
01:28
True Stress and True Strain
0 Views •
2024
Engineering stress is calculated as the load divided by the original, undeformed cross-sectional area. It approximates a material under load. This approximation is especially relevant post-yield in ductile materials. Though engineering stress-strain diagrams are often used for their convenience and accessibility, they can sometimes fall short in accuracy, particularly when dealing with large strain values. In contrast, true stress offers a more precise portrayal. It is computed by dividing the...
09:40
Detection of True IgE-expressing Mouse B Lineage Cells
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Cited by 3 •
2014
In vitro analysis of class switch recombination in mice is challenging due to cytophilic IgE molecules bound to Fc receptors on the surface of B cells. We describe a method for IgE detection using trypsin-mediated cleavage of surface-bound IgE prior to fixation and permeabilization for cytoplasmic fluorescence staining.
09:18
TRUE Gene Silencing: Screening of a Heptamer-type Small Guide RNA Library for Potential Cancer Therapeutic Agents
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Cited by 7 •
2016
Here we present a protocol for screening of a heptamer-type sgRNA library for potential therapeutic drugs against blood cancers.
12:44
A General Method for Evaluating Incubation of Sucrose Craving in Rats
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Cited by 25 •
2011
Responding for food or drug-paired cues increases over the course of a period of abstinence and this may relate to an increased susceptibility to relapse behaviors. Here we detail a procedure for evaluating this "incubation of craving" in rats that have self-administered sucrose.
08:29
Using Coculture to Detect Chemically Mediated Interspecies Interactions
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Cited by 9 •
2013
Bacteria produce secreted compounds that have the potential to affect the physiology of their microbial neighbors. Here we describe a coculture screen that allows detection of such chemically mediated interspecies interactions by mixing soil microbes with fluorescent transcriptional reporter strains of Bacillus subtilis on solid media.
FAQs
True North can be established through geographic coordinates, astronomical observations, or geodetic models. These approaches connect an engineering direction to Earth’s geographic reference rather than to a temporary or project-specific orientation. The selected basis lets engineers derive consistent azimuths and bearings for surveys, maps, and site layouts.
The distinction prevents engineers from treating a changing magnetic direction as a fixed geographic reference. Magnetic North varies with location and changes over time because of Earth’s magnetic field, while True North supports a consistent orientation. Keeping the references separate helps reduce alignment errors and preserves clear communication among project teams.
Azimuths and bearings express direction relative to an established reference, so using True North gives those measurements a consistent geographic basis. Surveyors and engineers can then compare directions across maps, observations, and site plans without changing the underlying reference. This consistency supports accurate layout work and coordination between related measurements.
A common reference allows different teams to interpret directional measurements in the same way. Surveyors, civil engineers, geospatial specialists, and transportation planners can coordinate maps, infrastructure orientations, and site information without introducing separate directional assumptions. The result is clearer technical communication and a lower risk that inconsistent orientation will affect project alignment.
A typical workflow begins by establishing the project’s geographic reference through coordinates, astronomical observations, or a geodetic model. Engineers then use that reference to define azimuths or bearings, orient the survey and map, and align the planned infrastructure. Applying the same direction throughout the site plan maintains consistency from measurement through construction coordination.
True North is especially useful when a project requires consistent orientation across surveys, maps, infrastructure, navigation, or site plans. It provides a shared basis for work in civil, geospatial, surveying, and transportation engineering. Projects that combine measurements from multiple sources benefit because each directional value can be interpreted against the same geographic reference.
Confusing the two references can cause directional measurements, map orientations, or infrastructure alignments to be interpreted incorrectly. Because Magnetic North varies by location and over time, applying it as though it were a fixed geographic direction can introduce alignment errors. Separating the references helps engineers maintain dependable bearings and communicate spatial information accurately.