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Updated: Jan 20, 2026

Standing/Stationary Waves and Simple Harmonics
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肠道和多胞体移植:我们今天的立场

Mohamed Maklad1, Mohammed Osman1, Mariam Ismail2

  • 1Center for Gut Rehabilitation and Transplantation, Digestive Disease and Surgery Institute, Cleveland Clinic, Cleveland, Ohio, USA.

Pediatric transplantation
|January 19, 2026
PubMed
概括

肠道移植是肠道衰竭的拯救生命的手术,生存率显著提高. 手术技术和免疫抑制技术的进步正在改善移植受体的结果和营养自主性.

关键词:
自主肠道重建自主肠道重建复合组织移植复合组织移植肠道衰竭是因为肠道不全.肠道移植 肠道移植多胞体移植多胞体移植儿科 儿科 儿科连续横向肠道整形手术

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Source: Arianna Brown, Asantha Cooray, PhD, Department of Physics & Astronomy, School of Physical Sciences, University of California, Irvine, CA
Standing waves, or stationary waves, are waves that appear not to propagate and are produced by the interference of two waves traveling in opposite directions with the same frequency and amplitude. These waves appear to vibrate up and down with no linear movement and are most easily identified in vibrating finite media like a plucked...
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Sometimes waves do not seem to move; rather, they just vibrate in place. Unmoving waves can be seen on the surface of a glass of milk kept in a refrigerator, which is one example of standing waves. Vibrations from the refrigerator motor create waves on the milk that oscillate up and down but do not seem to move across the surface. These waves are formed or created by the superposition of two or more identical moving waves in opposite directions. The waves move through each other, with their...
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Although digestion of proteins, carbohydrates, and lipids may begin in the stomach, it is completed in the intestine. The absorption of nutrients, water, and electrolytes from food and drink also occurs in the intestine. The intestines can be divided into two structurally distinct organs—the small and large intestines.
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Electromagnetic waves can be reflected; the surface of a conductor or a dielectric can act as a reflector. As electric and magnetic fields obey the superposition principle, so do electromagnetic waves. The superposition of an incident wave and a reflected electromagnetic wave produces a standing wave analogous to the standing waves created on a stretched string.
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A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
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