Internal morphology-dependent resonances of a coatedspherical particle

2021 ◽  
Author(s):  
Lufang Guo ◽  
Haitao Yu ◽  
Jianqi Shen
Keyword(s):  
Internal Morphology ◽  
Morphology Dependent Resonances

scholarly journals Effect of captivity on morphology: negligible changes in external morphology mask significant changes in internal morphology

2018 ◽  
Vol 5 (5) ◽  
pp. 172470 ◽  
Author(s):  
Stephanie K. Courtney Jones ◽  
Adam J. Munn ◽  
Phillip G. Byrne
Keyword(s):  
Sexual Dimorphism ◽  
Captive Breeding ◽  
Morphological Changes ◽  
External Morphology ◽  
Wild Animals ◽  
Internal Morphology ◽  
In Captivity ◽  
Two Generations ◽  
Breeding Programmes ◽  
Source Populations

Captive breeding programmes are increasingly relied upon for threatened species management. Changes in morphology can occur in captivity, often with unknown consequences for reintroductions. Few studies have examined the morphological changes that occur in captive animals compared with wild animals. Further, the effect of multiple generations being maintained in captivity, and the potential effects of captivity on sexual dimorphism remain poorly understood. We compared external and internal morphology of captive and wild animals using house mouse ( Mus musculus ) as a model species. In addition, we looked at morphology across two captive generations, and compared morphology between sexes. We found no statistically significant differences in external morphology, but after one generation in captivity there was evidence for a shift in the internal morphology of captive-reared mice; captive-reared mice (two generations bred) had lighter combined kidney and spleen masses compared with wild-caught mice. Sexual dimorphism was maintained in captivity. Our findings demonstrate that captive breeding can alter internal morphology. Given that these morphological changes may impact organismal functioning and viability following release, further investigation is warranted. If the morphological change is shown to be maladaptive, these changes would have significant implications for captive-source populations that are used for reintroduction, including reduced survivorship.

scholarly journals Corallimorpharians (Anthozoa: Corallimorpharia) from the Argentinean Sea

Zootaxa ◽  
2019 ◽  
Vol 4688 (2) ◽  
pp. 249-263
Author(s):  
DANIEL LAURETTA ◽  
MARIANO I. MARTINEZ
Keyword(s):  
Deep Sea ◽  
Submarine Canyon ◽  
Sister Group ◽  
Southwestern Atlantic ◽  
Sea Anemones ◽  
Northern Patagonia ◽  
Stony Corals ◽  
Internal Morphology ◽  
Southwestern Atlantic Ocean ◽  
First Time

Corallimorpharians are a relative small group of anthozoan cnidarians, also known as jewel sea anemones. They resemble actiniarian sea anemones in lacking a skeleton and being solitary, but resemble scleractinian corals in external and internal morphology, and they are considered to be the sister group of the stony corals. Corynactis carnea (=Sphincteractis sanmatiensis) is a small, common and eye catching species that inhabits the shallow water of northern Patagonia and the Argentinean shelf up to 200 m depth. Corallimorphus rigidus is registered for the first time from the southwestern Atlantic Ocean. It is a rather big and rare species that inhabits only the deep sea. Only two specimens were found at 2934 m depth in Mar del Plata submarine canyon, in an area under the influence of the Malvinas current, which may explain its occurrence. These two species are the only two known jewel sea anemones in the Argentinean sea and are reported and described herein. 

Internal Morphology Related to Tube-Building in the Meiobenthic Copepod Pseudostenhelia wellsi

1987 ◽  
Vol 7 (1) ◽  
pp. 171 ◽  
Author(s):  
J. Williams-Howze ◽  
H. Silverman ◽  
J. W. Fleeger
Keyword(s):  
Internal Morphology

Controlling the internal morphology of aqueous core-PLGA shell microcapsules: promoting the internal phase separation via alcohol addition

2019 ◽  
Vol 24 (6) ◽  
pp. 671-679 ◽  
Author(s):  
Samer R. Abulateefeh ◽  
Ghada K. Al-Adhami ◽  
Mahmoud Y. Alkawareek ◽  
Alaaldin M. Alkilany
Keyword(s):  
Phase Separation ◽  
Internal Morphology ◽  
Internal Phase ◽  
Aqueous Core

Aspects of the geomorphology, genesis and environmental significance of earth hummocks (thúfur, pounus): miniature cryogenic mounds

2005 ◽  
Vol 29 (2) ◽  
pp. 139-155 ◽  
Author(s):  
Stefan Grab
Keyword(s):  
Current Knowledge ◽  
Thermal Characteristics ◽  
Environmental Research ◽  
Environmental Significance ◽  
Research Gaps ◽  
Frozen Ground ◽  
The Past ◽  
Internal Morphology ◽  
Differential Frost Heave ◽  
Made In

Miniature varieties of cryogenic mounds that are capable of forming in seasonally frozen ground are commonly referred to as earth hummocks (e.g., North America), thúfur (e.g., Greenland and Iceland) and pounus (Fennoscandia). Over the past few decades there has been a consistent interest to study earth hummocks from a variety of environmental settings. This review summarizes the current knowledge of earth hummocks, highlighting aspects on the external and internal morphology, and thermal characteristics, which may assist to explain hummock formation. Several hypotheses have been proposed for the genesis of earth hummocks, including the ‘cryoexpulsion’ of clasts, hydrostatic and cryostatic pressure, cellular circulation, and differential frost heave. These hypotheses are critically evaluated and some research gaps identified. It emerges that considerable advances have been made towards an improved understanding of earth hummock development, modification and disintegration. Much progress has been made in the application of earth hummock studies to a variety of environmental research approaches such as palaeoenvironmental reconstructions and assessing their impact on hillslope drainage.

scholarly journals Morphology-dependent resonances of a microsphere–optical fiber system

1996 ◽  
Vol 21 (10) ◽  
pp. 695 ◽  
Author(s):  
Giora Griffel ◽  
John Connolly ◽  
Nancy Morris ◽  
Stephen Arnold ◽  
Dogan Taskent ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Fiber System ◽  
Morphology Dependent Resonances
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