scholarly journals Water bears and water loss: Tardigrades and anhydrobiosis

2008 ◽  
Vol 30 (4) ◽  
pp. 18-20 ◽  
Author(s):  
Ian M. Kinchin
Keyword(s):  
Water Loss ◽  
Sister Group ◽  
International Community ◽  
Community Of Researchers ◽  
Water Bears

The Phylum Tardigrada consists of about 900 known species of microscopic animals that are often referred to by their endearing popular names, water bears or moss piglets (translated from the German expressions Wasser Bär and Mooschweinchen). The group is considered a sister group to the arthropods, with animals typically less than 0.5 mm in length1. As tardigrades are of no direct medi cal or agricultural importance, their study is confined to a small, but highly productive, international community of researchers.

Electron Microscopy of Silicon Deposits in Foliar Idioblasts of Magnolia Grandiflora

1976 ◽  
Vol 34 ◽  
pp. 374-375
Author(s):  
Michael T. Postek
Keyword(s):  
Electron Microscopy ◽  
Water Loss ◽  
Normal Development ◽  
Magnolia Grandiflora ◽  
Plant Body ◽  
Normal Metabolism ◽  
Hydrated Oxide

Silicon occurs naturally in plants in the form of its hydrated oxide (SiO2.nH2O) commonly called silica. Silica has been shown to be a necessary element in the normal development of many plants, playing an array of roles including strengthening, protection, and reduction of water loss. Deposition of silica in various portions of the plant body, especially the leaves, may also be viewed as a way for the plant to dispose of any excess silica taken up beyond that necessary for normal metabolism.Studies of this “opaline” silica have thus far been limited to species of the Cyperaceae and Gramineae known to possess significant quantities of silica. Within the Magnoliaceae, certain “glistening” idioblast cells at the foliar veinlet termini and vein sheaths of Magnolia grandiflora (1) have been suspected to be siliceous in nature.

Leading through Chaos in a Neocolonial Context

2020 ◽  
Vol 43 (1) ◽  
pp. 31-42
Author(s):  
Laura Colket
Keyword(s):  
International Community ◽  
International Agencies ◽  
Personal Stories ◽  
The Creation ◽  
Foreign Governments ◽  
The Government ◽  
Post Disaster

Academic and public discourses often oversimplify the complex historical, social, and discursive forces that have created the current realities in Haiti. These discourses ignore or distort the role that foreign governments and international agencies have played and continue to play in the creation of the Haitian state. They portray the Haitian government as singular and static, corrupt and incapable, and fail to acknowledge changes in leadership and the diversity of individuals who exist within the government. This “single story” about Haiti privileges the international community and overlooks the stories from Haitians who are working to rebuild and reimagine their own country. This article examines the personal stories of Haitians in order to better understand the nature of Haitian leadership in a neocolonial, post-disaster context.

Diversification of the North American Doellingeria-Eucephalus Clade (Astereae: Asteraceae) Inferred from Molecular and Morphological Evidence

2019 ◽  
Vol 44 (4) ◽  
pp. 930-942
Author(s):  
Geraldine A. Allen ◽  
Luc Brouillet ◽  
John C. Semple ◽  
Heidi J. Guest ◽  
Robert Underhill
Keyword(s):  
North American ◽  
Sequence Data ◽  
Phylogenetic Analyses ◽  
Sister Group ◽  
Morphological Evidence ◽  
South American ◽  
New Combinations ◽  
The North ◽  
Hybridization Event ◽  
Ancient Hybridization

Abstract—Doellingeria and Eucephalus form the earliest-diverging clade of the North American Astereae lineage. Phylogenetic analyses of both nuclear and plastid sequence data show that the Doellingeria-Eucephalus clade consists of two main subclades that differ from current circumscriptions of the two genera. Doellingeria is the sister group to E. elegans, and the Doellingeria + E. elegans subclade in turn is sister to the subclade containing all remaining species of Eucephalus. In the plastid phylogeny, the two subclades are deeply divergent, a pattern that is consistent with an ancient hybridization event involving ancestral species of the Doellingeria-Eucephalus clade and an ancestral taxon of a related North American or South American group. Divergence of the two Doellingeria-Eucephalus subclades may have occurred in association with northward migration from South American ancestors. We combine these two genera under the older of the two names, Doellingeria, and propose 12 new combinations (10 species and two varieties) for all species of Eucephalus.

Recommendations on a scientific journal website preparation to represent for Russian and international community

2018 ◽  
Author(s):  
O.V. Kirillova ◽  
◽  
N.G. Popova ◽  
A.V. Skalaban ◽  
M.M. Zeldina ◽  
...  
Keyword(s):  
Scientific Journal ◽  
International Community

The examination of biophysical parameters of skin (transepidermal water loss, skin hydration and pH value) in different body regions of ponies

2012 ◽  
Vol 15 (3) ◽  
pp. 553-559 ◽  
Author(s):  
M.P. Szczepanik ◽  
P.M. Wilkołek ◽  
M. Pluta ◽  
Ł.R. Adamek ◽  
Z.J.H. Pomorski
Keyword(s):  
Water Loss ◽  
Ph Value ◽  
Neck Region ◽  
Transepidermal Water Loss ◽  
Skin Hydration ◽  
Lumbar Region ◽  
Biophysical Parameters ◽  
Body Regions ◽  
Skin Ph

Abstract The purpose of this study was to evaluate transepidermal water loss, skin hydration and skin pH in normal ponies. Sixteen ponies of both sexes were examined in the study. Measurements were taken from seven different sites: the neck region, the shoulder, thorax, lumbar, inguinal, lip region and the auricle. In each of the regions transepidermal water loss (TEWL), skin hydration and skin pH were measured. For transepidermal water loss, the lowest values were observed in the lumbar region (9.71g/hm2), while the highest values were observed in the lip region (22.35 g/hm2). In the case of skin hydration the lowest values were observed for the thorax region (2.13 CU), and the highest for the lip region (41.81 CU). For skin pH, the lowest results were obtained in the lumbar region (6.93), and the highest in the lip region (7.96).

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