air sac
air sac 1. Any one of a series of thin-walled sacs in birds that are connected to the lungs and increase the efficiency of ventilation. Some of the air sacs penetrate the internal cavities of bones.
2. A structural extension to the
trachea in insects, which increases the surface area available for the exchange of oxygen and carbon dioxide in respiration.
Cite this article
Pick a style below, and copy the text for your bibliography.
|
North Koreans living on bark, wild plants, aid officials say
News Wire article from: AP Online; 6/21/1998; ; 487 words
; ...Korea's food distribution system is forcing many of its people, especially women and children, to survive on bark and wild plants until the summer harvest, aid officials said Sunday. Aid programs have helped to save many North Koreans from...
|
|
NORTH KOREA - PEOPLE SURVIVING ON BARK, WILD PLANTS (JUN 22/HKS).
Newspaper article from: Periscope Daily Defense News Capsules; 6/22/1998; 697 words
; ...Korea's food distribution system is forcing many of its people, especially women and children, to survive on bark and wild plants until the summer harvest, aid officials said on Sunday. Aid programs have helped to save many North Koreans from...
|
|
Take time to appreciate beautiful tree bark; Birch not the only plant to recognize
Newspaper article from: Telegraph - Herald (Dubuque); 2/19/2006; ; 397 words
; ...paperbark maple is every bit as eye-catching as is the chalky white bark of birch. Winter is a wonderful time to appreciate a plant's bark. Many shrubs have notable bark. The red or yellow twigs of shrubby dogwoods look stunning against snowy...
|
|
Growth suppression of human transformed cells by treatment with bark extracts form a medicinal plant, Terminalia Arjuna
Magazine article from: In Vitro Cellular & Developmental Biology; 9/1/2000; ; 700+ words
; ...methanol extracts of a medicinal plant, Terminalia arjuna, on the...The study suggests that the bark extract of medicinal plant...words: Terminalia arjuna; bark extracts; p53; p21^sup WAFI...great medicinal value. Its bark is rich in polyphenols (about...
|
|
Identify plants by their bark and berries at a Wild Flower Society ramble.
Newspaper article from: The Boston Herald; 10/17/1999; ; 639 words
; Sticks and nuts and bark and buds will be the focus...Richburg will examine "Fall Woody Plants at Mt. Toby" with an eye...begin with basics, examining plant details up close. They'll...view and a chance to identify plants from a distance. "We will...during the expedition. The plant can grow to ...
|
|
Plant Rx: split bark.(WHAT'S GROWING ON IN THE PLANT WORLD)(Brief Article)
Magazine article from: Country Living Gardener; 12/22/2004; ; 470 words
; ...over the fissures and fractures in the bark of your young tree? Do linear cracks make...On cold but sunny winter days, tree bark heats up to 60[degrees]F, warming...spring, or whitewash with latex paint. Plant shrubs or other trees on the southwestern...
|
|
Isolation and Identification of the Beech Bark Disease Pathogens in Michigan. (Botany & Plant Ecology).(Brief Article)
Magazine article from: Michigan Academician; 3/22/2002; 606 words
; Isolation and Identification of the Beech Bark Disease Pathogens in Michigan. Gerard C. Adams, Michigan State University, Plant Pathology Department, East Lansing, MI 48824...Michigan where the beech are dying of beech bark disease.
|
|
ACID-LOVING PLANTS HARMED BY HARDWOOD BARK MULCH.(HOME & GARDEN)
Newspaper article from: The Virginian Pilot; 12/6/1998; ; 626 words
; ...with many gardeners than pine bark mulch. Is it good for plants...bark mulch on acid-loving plants proved hazardous. It should...several years, acid-loving plants that were mulched with hardwood...becoming alkaline.'' The plants analyzed were azaleas, rhododendron...when compared ...
|
|
Carnivorous plants: their bark is worse than their bite
Newspaper article from: Jerusalem Post; 7/25/1996; ; 581 words
; ...long-term goals of the Carnivorous Plant Society of Israel. Founded in December...society about the existence of carnivorous plants, and to create a forum for its 100 members to meet and exchange information and plant material. The society's current project...interests of the younger generation in ...
|
|
Plant poachers.(Tree with medicinal bark endangered)(Brief Article)
Magazine article from: New Scientist; 4/29/2000; 700+ words
; ...three days to strip valuable bark from the rare Prunus africana...the rate of regrowth, to sell bark to a French company. At this...africana, along with 13 other plants, was given new protection by...trade in medicinal plants. The bark of P. africana contains an...
|
|
Cotton Root Bark
Encyclopedia entry from: Gale Encyclopedia of Alternative Medicine
Cotton root bark Description Cotton root and the cotton plant are known as Gossypium herbaceum . Cotton is a member...to produce cotton fiber for clothing. Cotton root bark, the inner bark, and cotton seeds are all used as herbal remedies...
|
|
Bark
Encyclopedia entry from: The Gale Encyclopedia of Science
...coniferous and angiosperm plants. Bark is generally considered...among species of woody plants. For example, the bark of American beech...young, brownish, inner bark of young shoots of the...drinks and stews. Some barks have medicinal properties...
|
|
bark
Book article from: The Columbia Encyclopedia, Sixth Edition
...covering of the stem of woody plants, composed of waterproof cork...the carefully harvested outer bark of the cork oak ( Quercus suber...storage and to nourish other plant parts. "Girdling" a tree...girdled by animals that eat bark. The fiber cells that strengthen...flax, and jute; various ...
|
|
Anatomy of Plants
Book article from: Plant Sciences
...Anatomy of Plants The anatomy of plants relates to the internal structure...organization of the mature plant body, especially the vegetative organs of plants. Cells As in all other organisms...the fundamental unit of the plant body. Plant cells, whether...cambium, comprise the ...
|
|
Atmosphere and Plants
Book article from: Plant Sciences
...the atmosphere, and plants produce many of them...are the best-known plant-produced VOCs. Most...in leaves, wood, and bark. Once produced, monoterpenes stay in the plant tissue and are used by plants for defense against herbivores...does not stay in the plant. The production of ...
|