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Articles 391 - 420 of 687

Full-Text Articles in Anatomy

End Matter, Vol. 5, Index Feb 1981

End Matter, Vol. 5, Index

Great Basin Naturalist Memoirs

No abstract provided.


End Matter, Vol. 5 Feb 1981

End Matter, Vol. 5

Great Basin Naturalist Memoirs

No abstract provided.


Full Issue, Vol. 5 Feb 1981

Full Issue, Vol. 5

Great Basin Naturalist Memoirs

No abstract provided.


End Matter, Vol. 4, Index Oct 1980

End Matter, Vol. 4, Index

Great Basin Naturalist Memoirs

No abstract provided.


Mineral Compostition Of Atriplex Hymenelytra Growing In The Northern Mojave Desert, A. Wallace, E. M. Romney, R. B. Hunter, J. E. Kinnear, G. V. Alexander Oct 1980

Mineral Compostition Of Atriplex Hymenelytra Growing In The Northern Mojave Desert, A. Wallace, E. M. Romney, R. B. Hunter, J. E. Kinnear, G. V. Alexander

Great Basin Naturalist Memoirs

Fifty samples of Atriplex hymenelytra (Torr.) S. Wats, were collected from several different locations in southern Nevada and California to test variability in mineral composition. Only Na, V, P. Ca, Mg, Mn, and Sr in the samples appeared to represent a uniform population resulting in normal curves for frequency distribution. Even so, about 40 percent of the variance for these elements was due to location. All elements differed enough with location so that no element really represented a uniform population. The coefficient of variation for most elements was over 40 percent and one was over 100 percent. The proportion of …


End Matter, Vol. 4 Oct 1980

End Matter, Vol. 4

Great Basin Naturalist Memoirs

No abstract provided.


Full Issue, Vol. 4 Oct 1980

Full Issue, Vol. 4

Great Basin Naturalist Memoirs

No abstract provided.


Parent Material Which Produces Saline Outcrops As A Factor In Differential Distribution Of Perennial Plants In The Northern Mojave Desert, A. Wallace, E. M. Romney, R. A. Wood, A. A. El-Ghonemy, S. A. Bamberg Oct 1980

Parent Material Which Produces Saline Outcrops As A Factor In Differential Distribution Of Perennial Plants In The Northern Mojave Desert, A. Wallace, E. M. Romney, R. A. Wood, A. A. El-Ghonemy, S. A. Bamberg

Great Basin Naturalist Memoirs

An area of 0.46 km2 divided into six zones in the northern Mojave Desert transitional with the Great Basin Desert has been studied. Diversity is high among the perennial plant species within the 0.46 km2 area. Common species for the two deserts that are present in the area studied are Atriplex confertifolia (Torr. & Frem.) S.Wats., Ceratoides lanata (Pursh) J. T. Howell, Grayia spinosa (Hook.) Moq., Ephedra nevadensis S. Wats. Some other species present include Lycium andersonii A. Gray, Lycium pallidum Miers, Ambrosia dumosa (A. Gray) Payne., Larrea tridentata (Sesse & Moc. ex DC) Cov., Acamptopappus shockleyi A. …


Transpiration And Co2 Fixation Of Selected Desert Shrubs As Related To Soil-Water Potential, S. B. Clark, J. Letey Jr., O. R. Lunt, A. Wallace, G. E. Kleinkopf, E. M. Romney Oct 1980

Transpiration And Co2 Fixation Of Selected Desert Shrubs As Related To Soil-Water Potential, S. B. Clark, J. Letey Jr., O. R. Lunt, A. Wallace, G. E. Kleinkopf, E. M. Romney

Great Basin Naturalist Memoirs

In desert plants, transpiration rates decreased before photosynthetic rates when plants were entering a period of water stress. This may have adaptive consequences. A difference of -5 bars in the soil-moisture potential had considerable importance in reducing the rate of transpiration. In Helianthus annuus L. (sunflower) the photosynthetic rate decreased before the transpiration rate in contrast to Great Basin-Mojave Desert plants, and the changes occurred with a -1 bar difference in soil-moisture potential. Morphological changes in three desert plant species [Artemisia tridentata Nutt., Ambrosia dumosa (Gray) Payne, Larrea tridentata (Ses. Moc. ex DC) Cov.] as the soil-moisture potential decreased …


Front Matter, Vol. 4 Oct 1980

Front Matter, Vol. 4

Great Basin Naturalist Memoirs

No abstract provided.


A Light And Electron Microscopic Study Of Visual Neurons In The Medulla Externa Of The Crab Hemigrapsus Nudus, Yu Cheng Liao Sep 1980

A Light And Electron Microscopic Study Of Visual Neurons In The Medulla Externa Of The Crab Hemigrapsus Nudus, Yu Cheng Liao

Loma Linda University Electronic Theses, Dissertations & Projects

The decapod crustacean with a relatively well-defined visual system have contributed significantly to our understanding of visual neuron morphology and physiology. The general morphology of the optic lobes of several decapods were initially described by Parker (1897) and Hanstrom (1924). In the past few years, several light and electron microscope studies have been made on the lamina ganglionaris: the first optic ganglion, of the lobster (Hamori and Horridge, 1966a); the crayfish (Hafner, 1974; Nassel, 1976a), and the crab (Stowe et al., 1977; Rafuse et al., in preparation). As yet, no adequate description has been made of the visual neurons in …


End Matter, Vol. 3 Dec 1979

End Matter, Vol. 3

Great Basin Naturalist Memoirs

No abstract provided.


End Matter, Vol. 3, Index Dec 1979

End Matter, Vol. 3, Index

Great Basin Naturalist Memoirs

No abstract provided.


Full Issue, Vol. 3 Dec 1979

Full Issue, Vol. 3

Great Basin Naturalist Memoirs

No abstract provided.


Front Matter, Vol. 3 Dec 1979

Front Matter, Vol. 3

Great Basin Naturalist Memoirs

No abstract provided.


Isolation And Chemico-Physiologic Characterization Of A Parotid Hormone Activity From Porcine Glands, Jean-Marc Tieche Sep 1978

Isolation And Chemico-Physiologic Characterization Of A Parotid Hormone Activity From Porcine Glands, Jean-Marc Tieche

Loma Linda University Electronic Theses, Dissertations & Projects

For the past decade, evidence has accumulated which suggests that the resistance of the teeth to dental decay is in part under systemic control. It was shown that the resistance is accomplished through the optimal operation of a dentinal fluid transport mechanism which is believed to be hormonally controlled by the hypothalamic-parotid gland endocrine axis. Although circumstantial evidence for such an endocrine function was strong, the isolation of a parotid hormone which stimulates the dentinal fluid transport mechanism remained to be accomplished.

Using modern biochemical techniques, a methodology was designed to isolate and purify the hormone from porcine parotid glands. …


End Matter, Vol. 20 No. 5 Jun 1978

End Matter, Vol. 20 No. 5

Brigham Young University Science Bulletin, Biological Series

No abstract provided.


Mammals Of The Smithsonian Venezuelan Project, Charles O. Handley Jr. Jun 1978

Mammals Of The Smithsonian Venezuelan Project, Charles O. Handley Jr.

Brigham Young University Science Bulletin, Biological Series

Mammals and their ectoparasites were collected in all parts of Venezuela between 1965 and 1968 by the Smithsonian Venezuelan Project. Ecological and geographical data are summarized here for 38,213 specimens of 270 species of mammals obtained by the project.


Front Matter, Vol. 20 No. 5 Jun 1978

Front Matter, Vol. 20 No. 5

Brigham Young University Science Bulletin, Biological Series

No abstract provided.


Front Matter, Vol. 2 Mar 1978

Front Matter, Vol. 2

Great Basin Naturalist Memoirs

No abstract provided.


Full Issue, Vol. 2 Mar 1978

Full Issue, Vol. 2

Great Basin Naturalist Memoirs

No abstract provided.


End Matter, Vol. 2, Index Mar 1978

End Matter, Vol. 2, Index

Great Basin Naturalist Memoirs

No abstract provided.


End Matter, Vol. 2 Mar 1978

End Matter, Vol. 2

Great Basin Naturalist Memoirs

No abstract provided.


Front Matter, Vol. 1 Dec 1976

Front Matter, Vol. 1

Great Basin Naturalist Memoirs

No abstract provided.


End Matter, Vol. 1 Dec 1976

End Matter, Vol. 1

Great Basin Naturalist Memoirs

No abstract provided.


A Taxonomic And Ecologic Study Of The Riverbottom Forest On St. Mary River, Lee Creek, And Belly River In Southwestern Alberta, Canada, Robert K. Shaw Sep 1976

A Taxonomic And Ecologic Study Of The Riverbottom Forest On St. Mary River, Lee Creek, And Belly River In Southwestern Alberta, Canada, Robert K. Shaw

Great Basin Naturalist

The riverbottom forest community of St. Mary River, Lee Creek, and Belly River in southwestern Alberta, Canada, is a unique ecological entity characterized by poplar species having their major Alberta distribution along these streams. Stands in the community are dominated by three tree species, six shrub species, and nine herb species. Establishment of the community is dependent on climate and substrate; destruction is the result of progressive lateral stream-flow erosion. Soils are sandy loams above gravel, with pH values of 7.7 to 8.0 and soluble salt concentrations of 176 to 458 parts per million. Trees in mature stands averaged 23.0 …


Inhibition Of Gastric Secretion And Ulcer Formation By Lithium Chloride In The Rat, Thomas H. Adair Aug 1976

Inhibition Of Gastric Secretion And Ulcer Formation By Lithium Chloride In The Rat, Thomas H. Adair

Masters Theses

No abstract provided.


Front Matter, Vol. 20 No. 4 Jun 1976

Front Matter, Vol. 20 No. 4

Brigham Young University Science Bulletin, Biological Series

No abstract provided.


End Matter, Vol. 20 No. 4 Jun 1976

End Matter, Vol. 20 No. 4

Brigham Young University Science Bulletin, Biological Series

No abstract provided.


The Streblid Batflies Of Venezuela (Diptera: Streblidae), Rupert L. Wenzel Jun 1976

The Streblid Batflies Of Venezuela (Diptera: Streblidae), Rupert L. Wenzel

Brigham Young University Science Bulletin, Biological Series

This study was based on more than 36,000 Venezuelan Streblidae representing ca. 115 species and species complexes in 22 genera, taken from more than 6,800 hats of 95 species. Two new genera are proposed and 45 new species are described. The morphology is briefly discussed and terminology is revised. Collection data are given for each species, together with discussions on variability and host relationships when pertinent. Keys to genera and species arc included, as well as illustrations of most species. Noctiliostrebla dubia (Rudow) and the male of Parastrebla handleyi Wenzel are characterized, and relationships of Speiseria are discussed. New Taxa– …