scholarly journals Non-neoplastic pathology at the crossroads between neck imaging and cardiothoracic imaging

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Trinh T. Nguyen ◽  
Patricia E. Melendez ◽  
Katherine Kaproth-Joslin ◽  
Alok A. Bhatt
Keyword(s):  
Detailed Examination ◽  
Thoracic Inlet ◽  
Thoracic Imaging ◽  
Anatomic Landmark ◽  
Companion Article ◽  
Conducting Pathway

AbstractThe thoracic inlet is located at the crossroads between imaging of the neck and chest. It represents an important anatomic landmark, serving as the central conducting pathway for many vital structures extending from the neck into the chest and vice versa. Many important body systems are located within this region, including the enteric, respiratory, vascular, lymphatic, neurologic, and endocrine systems. A detailed examination of this region is essential when reviewing neck and thoracic imaging. This article will discuss the normal anatomic boundaries of the thoracic inlet and present an image-rich systematic discussion of the non-neoplastic pathology that can occur in this region. The neoplastic pathology of the thoracic inlet will be covered in a companion article.

Electron Irradiation Effects in Polyoxymethylene Crystals Grown Inside Trioxane Crystals

1971 ◽  
Vol 29 ◽  
pp. 78-79
Author(s):  
J. P. Colson ◽  
D. H. Reneker
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Detailed Examination ◽  
The Other ◽  
Electron Micrograph ◽  
Irradiation Effects ◽  
Threefold Axis ◽  
Typical Sample ◽  
Polymer Crystals ◽  
Chain Axis

Polyoxymethylene (POM) crystals grow inside trioxane crystals which have been irradiated and heated to a temperature slightly below their melting point. Figure 1 shows a low magnification electron micrograph of a group of such POM crystals. Detailed examination at higher magnification showed that three distinct types of POM crystals grew in a typical sample. The three types of POM crystals were distinguished by the direction that the polymer chain axis in each crystal made with respect to the threefold axis of the trioxane crystal. These polyoxymethylene crystals were described previously.At low magnifications the three types of polymer crystals appeared as slender rods. One type had a hexagonal cross section and the other two types had rectangular cross sections, that is, they were ribbonlike.

A new dissociation mode for dislocations in silicon

1978 ◽  
Vol 36 (1) ◽  
pp. 346-347
Author(s):  
A. Ourmazd ◽  
G.R. Booker ◽  
C.J. Humphreys
Keyword(s):  
Detailed Examination ◽  
Experimental Results ◽  
Dislocation Network ◽  
Weak Beam ◽  
Phosphorus Doped

A (111) phosphorus-doped Si specimen, thinned to give a TEM foil of thickness ∼ 150nm, contained a dislocation network lying on the (111) plane. The dislocation lines were along the three <211> directions and their total Burgers vectors,ḇt, were of the type , each dislocation being of edge character. TEM examination under proper weak-beam conditions seemed initially to show the standard contrast behaviour for such dislocations, indicating some dislocation segments were undissociated (contrast A), while other segments were dissociated to give two Shockley partials separated by approximately 6nm (contrast B) . A more detailed examination, however, revealed that some segments exhibited a third and anomalous contrast behaviour (contrast C), interpreted here as being due to a new dissociation not previously reported. Experimental results obtained for a dislocation along [211] with for the six <220> type reflections using (g,5g) weak-beam conditions are summarised in the table below, together with the relevant values.

Communication Sciences and Disorders PhD Graduates' Perceptions of Their PhD Program

2020 ◽  
Vol 5 (2) ◽  
pp. 463-478
Author(s):  
Elizabeth Crais ◽  
Melody Harrison Savage
Keyword(s):  
Detailed Examination ◽  
Career Expectations ◽  
Doctoral Preparation ◽  
Creative Solutions ◽  
Phd Education ◽  
Doctor Of Philosophy ◽  
First Time ◽  
Students Success ◽  
Phd Program

Purpose The shortage of doctor of philosophy (PhD)–level applicants to fill academic and research positions in communication sciences and disorders (CSD) programs calls for a detailed examination of current CSD PhD educational practices and the generation of creative solutions. The intended purposes of the article are to encourage CSD faculty to examine their own PhD program practices and consider the perspectives of recent CSD PhD graduates in determining the need for possible modifications. Method The article describes the results of a survey of 240 CSD PhD graduates and their perceptions of the challenges and facilitators to completing a PhD degree; the quality of their preparation in research, teaching, and job readiness; and ways to improve PhD education. Results Two primary themes emerged from the data highlighting the need for “matchmaking.” The first time point of needed matchmaking is prior to entry among students, mentors, and expectations as well as between aspects of the program that can lead to students' success and graduation. The second important matchmaking need is between the actual PhD preparation and the realities of the graduates' career expectations, and those placed on graduates by their employers. Conclusions Within both themes, graduate's perspectives and suggestions to help guide future doctoral preparation are highlighted. The graduates' recommendations could be used by CSD PhD program faculty to enhance the quality of their program and the likelihood of student success and completion. Supplemental Material https://doi.org/10.23641/asha.11991480

RadCases Plus Q&A Thoracic Imaging

2019 ◽  
Author(s):  
Carlos S Restrepo ◽  
Steven Zangan
Keyword(s):  
Thoracic Imaging

The Intersphenoid Sinus Septum: An Impractical Anatomic Landmark in Transsphenoidal Endoscopic Pituitary Surgery

Skull Base ◽  
2011 ◽  
Vol 21 (S 01) ◽  
Author(s):  
Justin Poirier ◽  
Donald Lee ◽  
Neil Duggal ◽  
Brian Rotenberg
Keyword(s):  
Pituitary Surgery ◽  
Anatomic Landmark

Apparitions of ‘Freedom’ (the Word)

Derrida Today ◽  
2012 ◽  
Vol 5 (1) ◽  
pp. 39-54 ◽  
Author(s):  
Marian Hobson
Keyword(s):  
Detailed Examination ◽  
Close Attention ◽  
Change Of Perspective

Derrida thematises his writing through a change of perspective which moves from very detailed examination of an argument to more general statements. This paper is a consideration of how Derrida anchors his close attention to the detail of an argument in a wider philosophical-historical and indeed social framework. In this paper, the word in question is ‘freedom’, discussed with the philosopher and psychoanalyst Elisabeth Roudinesco; this paper moves back chronologically to Force of Law, and finally to a passage in Of Grammatology to demonstrate that in Derrida's work from early to late there is a web of reflection about freedom.

Essays on Hume, Smith and the Scottish Enlightenment

2018 ◽  
Author(s):  
Christopher J. Berry
Keyword(s):  
Intellectual History ◽  
David Hume ◽  
Adam Smith ◽  
Detailed Examination ◽  
Scottish Enlightenment ◽  
Subsequent Work ◽  
Retrospective Assessment ◽  
The 1960S

A collection of essays by a leading scholar. The work selected spans several decades, which together with three new unpublished pieces, cumulatively constitute a distinct interpretation of the Scottish Enlightenment as a whole while incorporating detailed examination of the work of David Hume and Adam Smith. There is, in addition, a substantial introduction which, alongside Berry’s personal intellectual history, provides a commentary on the development of the study of the Scottish Enlightenment from the 1960s. Each of the previously published chapters includes a postscript where Berry comments on subsequent work and his own retrospective assessment. The recurrent themes are the ideas of sociability and socialisation, the Humean science of man and Smith’s analysis of the relation between commerce and morality.

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