Revision of the hydroid Plumalina Hall, 1858 in the Silurian and Devonian of New York

2013 ◽  
Vol 87 (4) ◽  
pp. 710-725 ◽  
Author(s):  
A. D. Muscente ◽  
Warren D. Allmon
Keyword(s):  
New York ◽  
Quantitative Analysis ◽  
Bedding Plane ◽  
Hard Substrate ◽  
Colony Form ◽  
New Information ◽  
Frasnian Stage

The feather-shaped Plumalina Hall, 1858 is revised on the basis of new and reexamined specimens from New York. Previously described from Givetian through Famennian deposits, a single compression of P. tenera n. sp. from the Rochester Shale extends the range into the Wenlock, and provides new information regarding Plumalina's biology. We assess the utility of morphologic characters in diagnoses of taxa, and present the first quantitative analysis of fossil hydroids to distinguish P. brevis n. sp. (Frasnian) from other Devonian species.Plumalina has been compared to plants, graptolites, and octocorals. Some interpretations have proposed affinities among hydrozoans based on colony form and the presence of putative polyp bases. Our analysis shows that, like extant thecate hydrozoans, Plumalina had a delicate, chitinous hydrocaulus with weakly articulated hydrocladia. An assemblage of in situ specimens, steeply inclined relative to the bedding plane in an Ithaca Formation (Frasnian Stage) turbidite, indicates that Devonian species produced sessile, erect colonies attached to a hard substrate, comparable to extant hydroids that feed in currents. Morphometric comparisons between putative Plumalina polyp bases and polyp bases of modern analogues reveal similarities to hydroids in the superfamily Plumularioidea McCrady, 1859. Plumalina is the most abundant fossil hydroid so far reported, and is pertinent to interpretations of the hydrozoan record.

Burrowed Phacops rana from the Moscow Formation of New York

1988 ◽  
Vol 62 (2) ◽  
pp. 311-312 ◽  
Author(s):  
Paul D. Zell
Keyword(s):  
New York ◽  
Visual Field ◽  
Bedding Plane ◽  
Sediment Surface ◽  
Bedding Planes

The trilobite Phacops rana has previously been documented in two life positions: horizontally outstretched and enrolled (Hall and Clarke, 1888). A specimen of Phacops rana was recovered in an unusual life position from the Windom Member of the Moscow Formation (Figure 1). It was collected from a borrow pit along Castle Hill Road, 1 km east of Earlville in Chenango County, New York. The trilobite appears to have burrowed tail first into the substrate, with only part of the cephalon and one or two thoracic segments exposed above the sediment surface. The orientation of the eyes indicate that the visual field was horizontal. The thorax angled into the substrate at an angle of approximately 50° from the horizontal, with the pygidium tilted dorsally relative to the thorax. Compaction effects appear to be slight. Because the specimen was found in situ, no doubt exists as to its orientation with respect to bedding. It is also evident from bedding plane surfaces that this trilobite had burrowed, and was not simply draped over an uneven substrate, as it intersects three bedding planes. There is no evidence of any object over which it could have been draped. No burrow trace, lining, or scratch marks are preserved. No other specimens of Phacops in this position have been reported.

Mathematical Model Investigation of Far-Field Transport of Ocean-Dumped Sewage Sludge Related to Remote Sensing

1982 ◽  
Vol 14 (3) ◽  
pp. 33-39
Author(s):  
C Y Kuo
Keyword(s):  
New York ◽  
Sewage Sludge ◽  
Laboratory Data ◽  
Three Dimensional ◽  
Approximate Model ◽  
Transport Processes ◽  
Far Field ◽  
New York Bight ◽  
Mean Current

An existing, three-dimensional, Eulerian-Lagrangian finite-difference model was modified and used to examine the far-field transport processes of dumped sewage sludge in the New York Bight. Both in situ and laboratory data were utilized in an attempt to approximate model inputs such as mean current speed, vertical and horizontal diffusion coefficients, particle size distributions, and specific gravities. Concentrations of the sludge near the sea surface predicted from the computer model were compared qualitatively with those remotely sensed.

Rabbit aortic medial thickness under relaxed and specified simulated in vivo conditions

1983 ◽  
Vol 245 (4) ◽  
pp. H623-H627
Author(s):  
G. Schneiderman ◽  
W. F. Pritchard ◽  
C. A. Ramirez ◽  
C. K. Colton ◽  
K. A. Smith ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Mean Arterial Pressure ◽  
Aortic Wall ◽  
Macromolecular Transport ◽  
Liquid Silicone ◽  
Normal Mean ◽  
Longitudinal Extension ◽  
Media Layer

A method is presented for measuring the thickness of the intima-media layer of the normal rabbit descending thoracic aortic wall under both relaxed (excised) and specified simulated in vivo conditions. The in vivo conditions were simulated by maintaining the aorta in situ at its normal longitudinal extension while perfusing its lumen at the normal mean arterial pressure with a mixture of liquid silicone polymer and a catalyst, thus providing physiological radial distension. After the rubber cured, both relaxed and extended-distended tissue segments were obtained from adjacent sites on the same aorta. These tissue segments were fixed and further processed for measurement of their medial thicknesses by light microscopy. This data was used to estimate the ratio of the medial thickness of the relaxed, excised aorta to that under in vivo conditions, 1.72 +/- 0.15. This information is required for quantitative analysis of data obtained from previous studies of in vivo macromolecular transport across the rabbit thoracic aortic wall.

A New Generation of Girls

2019 ◽  
Vol 12 (1) ◽  
pp. 125-127
Author(s):  
Lucy D. Curzon
Keyword(s):  
New York ◽  
Quantitative Analysis ◽  
Qualitative Study ◽  
New York University ◽  
Gendered Spaces ◽  
Transgender Children ◽  
New Generation ◽  
Gender Revolution

BOOK REVIEWAnn Travers. 2018. The Trans Generation: How Trans Kids (and Their Parents) Are Creating a Gender Revolution. New York: New York University Press.Ann Travers’s new book, The Trans Generation: How Trans Kids (and Their Parents) Are Creating a Gender Revolution (hereafter The Trans Generation) is a highly persuasive investigation that sheds much-needed scholarly light on a grossly marginalized, precarious community. Travers interviewed 36 transgender children, and many of their parents, to reveal the challenges they face in everyday use of bathrooms, locker rooms, and other rigidly gendered spaces, as well as in interactions with friends, parents, and siblings, as well as schools, and local and state or provincial governments. Apart from the scope of this study, what is remarkable about The Trans Generation is its accessibility. Instead of presenting a quantitative analysis, which can be alienating to readers outside academia, Travers offers an exhaustive qualitative study parsed in highly thoughtful, eloquent, and open terms—one that prizes the individuality, indeed the knowableness, of each child interviewed. And, although The Trans Generation is not explicitly dedicated to discussions of girlhood, the focus of this journal, it nonetheless offers, I argue, valuable new paradigms or strategies for thinking about girls’ lives and identities.

C-fos and c-jun Proto-Oncogene Expression Is Decreased in Psoriasis: an In Situ Quantitative Analysis

1991 ◽  
Vol 97 (4) ◽  
pp. 672-678 ◽  
Author(s):  
Nicole. Basset-Séguin ◽  
Chantal. Escot ◽  
Jean Pierre. Molès ◽  
Jean Marie. Blanchard ◽  
Cécile. Kerai ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Oncogene Expression

JOB LEWIS SMITH ON MATERNAL IMPRESSIONS AS A CAUSE OF CLEFT LIP AND PALATE (1890)

PEDIATRICS ◽  
1981 ◽  
Vol 68 (4) ◽  
pp. 483-483
Author(s):  
T. E. C.
Keyword(s):  
New York ◽  
Cleft Palate ◽  
Congenital Malformations ◽  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Seventh Edition ◽  
Pediatric Society ◽  
Firm Believer

Job Lewis Smith (1827-1897), a founder of the American Pediatric Society and who, with Abraham Jacobi, established pediatrics as a specialty in our country, was a firm believer that strong mental impressions during pregnancy might be a cause of congenital malformations. He gave the following explanation of the cause of cleft lip and palate in the seventh edition of his textbook, published in 1890.1 Mrs. D[unknown], Eighth avenue, New York, seven months before the birth of her child, when visiting at a distance, accidentally broke the plate of a full set of upper teeth. The line of fracture was antero-posterior and through the centre of the plate. Being away from home, she was much annoyed by the accident and retained the fragments of the plate in situ by pressure with the tongue. As she could not open her mouth without the plate falling out, except it was retained by pressure with the tongue, her mind was dwelling almost constantly on the accident during the few days of her visit. Her boy, born seven months subsequently, had a hare-lip and cleft palate. The mother stated that the deficiency in the lip and palate corresponded precisely to the location of the fracture in the plate.

The application of the in situ high-temperature X-ray diffraction quantitative analysis

2008 ◽  
Vol 452 (2) ◽  
pp. 446-450 ◽  
Author(s):  
Qiuguo Xiao ◽  
Ling Huang ◽  
Hui Ma ◽  
Xinhua Zhao
Keyword(s):  
High Temperature ◽  
Quantitative Analysis ◽  
X Ray Diffraction ◽  
X Ray

Was the Bank Holiday of 1933 Caused by a Run on the Dollar?

1987 ◽  
Vol 47 (3) ◽  
pp. 739-755 ◽  
Author(s):  
Barrie A. Wigmore
Keyword(s):  
New York ◽  
Foreign Exchange ◽  
Federal Reserve ◽  
Deposit Insurance ◽  
Banking System ◽  
Domestic Currency ◽  
New Information ◽  
The Stability ◽  
Specific Timing

International, rather than domestic, causes of both the Bank Holiday of 1933 and the calm in the banking system that followed are emphasized here. New information on gold losses by the New York Federal Reserve, rather than domestic currency hoarding, serve to explain the Bank Holiday's specific timing. Expectations that Roosevelt would devalue the dollar stimulated much of the gold loss. I also argue that Roosevelt's restrictions on gold holdings and foreign exchange dealings and his devaluation of the dollar by 60 percent were more important to the stability of the banking system after the Bank Holiday than was deposit insurance.

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