Disorders of Head Shape and Size

2020 ◽  
pp. 957-999
Author(s):  
Essam A. Elgamal ◽  
Mustafa A. M. Salih
Keyword(s):  
Head Shape ◽  
Shape And Size

Acanthochondria helicoleni sp. nov. (Copepoda, Chondracanthidae) parasitic on Helicolenus lahillei (Scorpaeniformes, Sebastidae) from Argentinean waters

2010 ◽  
Vol 55 (4) ◽  
Author(s):  
Delfina Cantatore ◽  
Juan Timi
Keyword(s):  
New Species ◽  
Relative Size ◽  
Relative Length ◽  
Parasitic Copepod ◽  
The Body ◽  
Head Shape ◽  
A New Species ◽  
Shape And Size

AbstractA new species of a parasitic copepod, Acanthochondria helicoleni sp. nov. (Copepoda, Chondracanthidae), is described and illustrated from specimens collected within the branchial chambers of the rubio, Helicolenus lahillei Norman, 1937, from the Argentinean waters. The new species most closely resemble A. serrani Braicovich et Timi, 2009 collected in the same region, but differs in the general measurements and proportions of the body; primarily by the relative length of neck, shape of head, shape and size of genito-abdominal tagma and relative size of the trunk postero-lateral processes.

Head shape and size and body weight in the newborn infant

1985 ◽  
Vol 19 (1) ◽  
pp. 1-5 ◽  
Author(s):  
T. Todros ◽  
C. Sanfelici ◽  
G. Corrao ◽  
L. Gagliardi
Keyword(s):  
Body Weight ◽  
Newborn Infant ◽  
Head Shape ◽  
Shape And Size

scholarly journals Predictive Capacity of Boar Sperm Morphometry and Morphometric Sub-Populations on Reproductive Success after Artificial Insemination

Animals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 920
Author(s):  
Vinicio Barquero ◽  
Eduardo R. S. Roldan ◽  
Carles Soler ◽  
Jesús L. Yániz ◽  
Marlen Camacho ◽  
...  
Keyword(s):  
Reproductive Success ◽  
Litter Size ◽  
Artificial Insemination ◽  
Sperm Head ◽  
Computer Assisted ◽  
Operating Characteristics ◽  
Head Shape ◽  
Roc Curve Analysis ◽  
Predictive Capacity ◽  
Shape And Size

The aim of the study was to compare the morphometric features of sperm head size and shape from the Pietrain line and the Duroc × Pietrain boar crossbred terminal lines, and to evaluate their relationship with reproductive success after artificial insemination of sows produced from crossbreeding the York, Landrace and Pietrain breeds. Semen samples were collected from 11 sexually mature boars. Only ejaculates with greater than 70% motility rate and < 15% of abnormal sperm were used for artificial inseminations (AI) and included in the study. Samples were analyzed using an ISAS®v1 computer-assisted sperm analysis system for eight morphometric parameters of head shape and size (CASA-Morph). Sub-populations of morphometric ejaculates were characterized using multivariate procedures, such as principal component (PC) analysis and clustering methods (k-means model). Four different ejaculate sub-populations were identified from two PCs that involved the head shape and size of the spermatozoa. The discriminant ability of the different morphometric sperm variables to predict sow litter size was analyzed using a receiver operating characteristics (ROC) curve analysis. Sperm head length, ellipticity, elongation, and regularity showed significant predictive capacity on litter size (0.59, 0.59, 0.60, and 0.56 area under curve (AUC), respectively). The morphometric sperm sub-populations were not related to sow litter size.

Head Shape and Size of Newborn Infants

2008 ◽  
Vol 13 (5) ◽  
pp. 572-575 ◽  
Author(s):  
J. David Baum ◽  
Donald Searls
Keyword(s):  
Newborn Infants ◽  
Head Shape ◽  
Shape And Size

Parental smoking during pregnancy and head shape and size in school children

2018 ◽  
Vol 45 (5) ◽  
pp. 401-405 ◽  
Author(s):  
Sławomir Kozieł ◽  
Elżbieta Żądzińska ◽  
Aleksandra Gomula
Keyword(s):  
School Children ◽  
Parental Smoking ◽  
Head Shape ◽  
Smoking During Pregnancy ◽  
Shape And Size

Head Shape and Size in Cannibal and Noncannibal Larvae of the Tiger Salamander from West Texas

Copeia ◽  
1983 ◽  
Vol 1983 (4) ◽  
pp. 1006 ◽  
Author(s):  
Benjamin A. Pierce ◽  
Jeffry B. Mitton ◽  
Larry Jacobson ◽  
Francis L. Rose
Keyword(s):  
Tiger Salamander ◽  
Head Shape ◽  
West Texas ◽  
Shape And Size

The Alteration of the Pore Spaces in Sandstones

1973 ◽  
Vol 31 ◽  
pp. 210-211
Author(s):  
R. E. Ferrell ◽  
G. G. Paulson
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
The Other ◽  
Coarse Grained ◽  
Depositional Fabric ◽  
Soluble Components ◽  
Scanning Electron ◽  
Shape And Size

The pore spaces in sandstones are the result of the original depositional fabric and the degree of post-depositional alteration that the rock has experienced. The largest pore volumes are present in coarse-grained, well-sorted materials with high sphericity. The chief mechanisms which alter the shape and size of the pores are precipitation of cementing agents and the dissolution of soluble components. Each process may operate alone or in combination with the other, or there may be several generations of cementation and solution.The scanning electron microscope has ‘been used in this study to reveal the morphology of the pore spaces in a variety of moderate porosity, orthoquartzites.

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