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関連する概念動画

Temperature Measurement Sites01:14

Temperature Measurement Sites

A thermometer measures body temperature. The common sites for measuring body temperature are the oral cavity, axillary region, temporal artery, and skin surface, such as the forehead, abdomen, and axilla. True core body temperature is assessed in the rectum, tympanic membrane, pulmonary artery, esophagus, and urinary bladder.
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...
Wheatstone Bridge01:29

Wheatstone Bridge

An ohmmeter is a resistance-measuring device. It works by applying a voltage to a resistor of unknown resistance and measuring the current across the resistor. The resistance value is deduced using Ohm's law. Usually, the standard configuration of an ohmmeter comprises a voltmeter or an ammeter. However, such configurations are limited in accuracy because the meters alter the voltage applied to the resistor and the current that flows through it.
Thus, for accurate resistance measurements, a...
Influence of Earth's Curvature and Atmospheric Refraction on Leveling01:26

Influence of Earth's Curvature and Atmospheric Refraction on Leveling

During leveling, the Earth's curvature and atmospheric refraction introduce deviations in the line of sight from a true horizontal reference. When the line of sight is leveled, it remains perpendicular to the plumb line only at a single point. Beyond this, it deviates due to the Earth’s curvature, represented by the correction C. For a sight distance D, the deviation can be derived using the relationship:This relationship shows that the deviation increases quadratically with distance. Over a...
Geoid and Ellipsoid01:28

Geoid and Ellipsoid

The Earth's shape is best described as an ellipsoid, a slightly flattened sphere created by rotating an ellipse around its minor axis. This flattening results in the polar axis being about 21 kilometers shorter than the equatorial axis. In contrast, the geoid represents the Earth's gravitational shape and aligns with the mean sea level (MSL). The geoid is an irregular equipotential surface where gravity is perpendicular at every point. Variations in Earth's mass distribution cause geoid...
Radian and Degree Measure01:29

Radian and Degree Measure

Angular motion is measured using two primary units: degrees and radians. These units describe the extent of rotation around a fixed point. A complete rotation corresponds to 360 degrees or 2π radians, depending on the unit used. Although both represent the same angular displacement, they differ in origin and application.Degrees divide a circle into 360 equal segments. Due to its intuitive structure, this unit is historically rooted and widely used in general applications such as navigation,...
Polar Coordinates01:24

Polar Coordinates

The polar coordinate system offers an alternative to the Cartesian coordinate system for specifying points in a plane, using a distance and an angle instead of x and y coordinates. This system is particularly advantageous in situations involving circular or rotational symmetry, such as in physics or engineering problems involving waves, oscillations, or orbital paths.Defining Polar CoordinatesIn polar coordinates, a point is represented as P(r, ��), where r is the radial distance from a fixed...

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関連する実験動画

Updated: Jul 14, 2026

Measuring Biophysical and Psychological Stress Levels Following Visitation to Three Locations with Differing Levels of Nature
05:33

Measuring Biophysical and Psychological Stress Levels Following Visitation to Three Locations with Differing Levels of Nature

Published on: June 19, 2019

インディナビルの濃度とセントジョンズワート.

S C Piscitelli, A H Burstein, D Chaitt

    Lancet (London, England)
    |February 22, 2000
    PubMed
    まとめ

    セントジョン's wortは,健康な個人にHIV薬インディナビルの暴露を大幅に低下させます. この相互作用は,HIV患者において,薬剤耐性および治療失敗のリスクを増やす可能性があります.

    科学分野:

    • 薬理学 薬理学とは
    • 薬物相互作用 薬物相互作用
    • 薬草の相互作用 薬草の相互作用

    背景:

    • セントジョンズワートは,既知の相互作用を持つ人気のあるハーブサプリメントです.
    • インディナビルは,HIV-1感染の管理に不可欠なプロテアゼ阻害剤です.
    • 薬草の相互作用を理解することは,患者の安全性と治療の有効性にとって極めて重要です.

    研究 の 目的:

    • 健康なボランティアのインディナビールの薬理 Indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir. indinavir.
    • HIV治療におけるこの相互作用の臨床的意義を評価する.

    主な方法:

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    Last Updated: Jul 14, 2026

    Measuring Biophysical and Psychological Stress Levels Following Visitation to Three Locations with Differing Levels of Nature
    05:33

    Measuring Biophysical and Psychological Stress Levels Following Visitation to Three Locations with Differing Levels of Nature

    Published on: June 19, 2019

    Field Measurement of Effective Leaf Area Index using Optical Device in Vegetation Canopy
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    Published on: July 29, 2021

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    • 健康なボランティアにインディナビルを投与した.
    • インディナビルの暴露に対するセントジョンズワートの併用投与の影響を測定した.
    • 曲線下の面積と最低濃度を含む主要な薬理学パラメータを分析した.

    主要な成果:

    • セントジョンズワートはインディナビルの曲線下の面積 (AUC) を平均57%減少させた.
    • 抽出した8時間のインディナビルの最低濃度は81%減少した.
    • これらの減少は,薬物への全般的な曝露の大幅な減少を示しています.

    結論:

    • セントジョンズワートとインディナビルの併用は,インディナビルの暴露を大幅に減少させます.
    • この相互作用は,治療の失敗と,HIV患者の薬剤耐性の発生のリスクを伴います.
    • 臨床医は,インディナビル治療を受けている患者にセントジョンズワートを処方する際には注意を払うべきです.