Hyalonema Sieboldi Gray

Ultrastructure of Archigetes sieboldi (Cestoda: Caryophyllidea): relationship between progenesis, development and evolution.

Ultrastructural characteristics of progenetic and monoxenic Archigetes sieboldi Leuckart, 1878 from the oligochaete Limnodrilus hoffmeisteri Claparède are described. Our observations demonstrate that progenetic Archigetes sieboldi shares characteristics of both larval (progenetic) and adult stages. The primary larval characteristics are: the presence of a cercomer; a surface filamentous coat co...

Delamination Wear Mechanism in Gray Cast Irons

An investigation of the friction and sliding wear of gray cast iron against chromium plated cast irons was carried out on a newly constructed reciprocating friction and wear tester. The tests were the first to be done on the test rig under dry conditions and at the speed of 170 cm/min, and variable loads of 20-260 N for a duration of 15 min. to 3 hours. The gray cast iron surfaces worn by a pro...

Aging and dementia: more gray hair and less gray matter.

A Nematic LCD with Submillisecond Gray-to-gray Response Time

We propose a triode structure for achieving submillisecond grayto-gray response time in a double fringing-field-switching (DFFS) cell. The bright and dark states are obtained by applying a fringing field and a vertical field, respectively. The simulated averaged grayscale rise time is 793 μs and decay time is 478 μs. This triode DFFS mode enables conventional nematic LCDs for color sequential d...

Mediastinal Gray Zone Lymphoma.

A 50-year-old male presented with cough and breathlessness. A positron emissoin tomography scan revealed FDG (Fluorodeoxyglucose) avid mediastinal mass. Tru-cut biopsy showed fibrotic stromal tissue with cellular infiltrate consisting of abnormal lymphoid cells and few large cells with smudged nucleus. Immunohistochemistry revealed diffuse positivity with CD20, focal positivity for CD30 and rar...