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Related Concept Videos

Stress: General Loading Conditions01:15

Stress: General Loading Conditions

To grasp the intricacy of real-world conditions where multiple loads are applied simultaneously to a structure, one might visualize a section passing through a specific point within a body, aligned parallel to the xy plane. This section is subjected to various forces, including original loads, normal forces, and shearing forces.
The shearing force, possessing potential directionality within the plane of the section, is simplified into two component forces running parallel to the x and y axes.
General State of Stress01:21

General State of Stress

The general state of stress within a material can be accurately depicted using a stress tensor. This tensor encapsulates the internal forces distributed within a material subjected to external forces or deformations.
Specifically, consider a tetrahedral element where one face, labeled XYZ, is perpendicular to the line OA, and the remaining faces align with the coordinate axes with point O as the origin. At any point, such as point O, the stress tensor can be used to determine the stress...
Principal Stresses01:24

Principal Stresses

The graphical depiction of normal and shearing stress equations is represented by a circle, demonstrating the interplay between these stresses under different angular conditions. The center of this circle C, located on the vertical axis, represents the average normal stress, while its radius shows the range of stress variations. At points A and B, where the circle intersects the horizontal axis, the maximum and minimum normal stresses are observed, occurring without shearing stress. These...
The Spindle Assembly Checkpoint02:19

The Spindle Assembly Checkpoint

The spindle assembly checkpoint is a molecular surveillance mechanism ensuring the fidelity of chromosome segregation during anaphase. The checkpoint monitors the completion of all the prerequisite steps before chromosome segregation to determine whether the segregation process should proceed or be delayed.
Many proteins function together to control the spindle assembly checkpoint. Mutations affecting these proteins may allow cells to proceed into anaphase prematurely, resulting in the...
The Spindle Assembly Checkpoint02:19

The Spindle Assembly Checkpoint

The spindle assembly checkpoint is a molecular surveillance mechanism ensuring the fidelity of chromosome segregation during anaphase. The checkpoint monitors the completion of all the prerequisite steps before chromosome segregation to determine whether the segregation process should proceed or be delayed.
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Planning Nursing Care II01:29

Planning Nursing Care II

A nursing care plan can present in two forms: informal and formal. Informal is a care plan for the individual use of the nurse and goals they wish to accomplish during their shift. Informal care plans are not included in the patient chart. A formal nursing care plan is a written or computerized guide that organizes patient care. It is further subdivided into two: standardized and individualized care plans. Standardized care plans are pre-populated care plans for specific patient populations,...

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OTA Staffs Up.

Science (New York, N.Y.)·1974
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OTA Staffs Up.

S B Mack

    Science (New York, N.Y.)
    |February 22, 1974
    PubMed
    Summary

    The Technology Assessment Board

    Area of Science:

    • Science and Technology Policy
    • Governmental Oversight

    Background:

    • The Technology Assessment Board (TAB) oversees technology assessment within the US government.
    • Previous reports indicated a leadership transition for the TAB.

    Purpose of the Study:

    • To clarify the legal framework and likely outcome for the chairmanship of the Technology Assessment Board.

    Main Methods:

    • Analysis of existing legislation regarding TAB leadership.
    • Consideration of political party dynamics within the House of Representatives.

    Main Results:

    • The law permits any House member of the TAB to become chairman.
    • A majority party member, likely a Democrat, is expected to be chosen as the next chairman.

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    Conclusions:

    • The selection of the TAB chairman is governed by law and political considerations.
    • The anticipated leadership change reflects the balance of power in the House.