Some years ago I built a large demonstration pigeon chamber that was constructed of transparent Plexiglas on three vertical sides and the top. The intelligence panel and the bottom were opaque. The chamber was placed in a small room in the laboratory, and a pigeon was trained to peck a transilluminated key in the usual manner with presentations of a few seconds access to grain. Key pecking was ...

1 of 2 DESCRIPTION Gorlin syndrome (basal cell nevus syndrome or nevoid basal cell carcinoma syndrome) is an uncommon but, well known, autosomal dominant cancer syndrome. 1 This condition affects the hands commonly. 2 However the hand is not the common presenting clinical feature. 2 We wish to present an unusual presentation of Gorlin’s syndrome which has not been noted in the literature previo...

The Palmer Long-Term Ecological Research (Palmer LTER) program seeks to understand the structure and function of the Antarctic marine ecosystem in the context of physical forcing (atmospheric, oceanic and sea ice) on seasonal to millennial time-scales (http://www.icess. ucsb.edu/lter/lter.html). The western Antarctic Peninsula (WAP) region, the location of the Palmer LTER (Figure 1), is proving...

© 2021 American Meteorological Society. For information regarding reuse of this content and general copyright information, consult the AMS Copyright Policy (www.ametsoc.org/PUBSReuseLicenses).Corresponding author: Dr. Robert D. Palmer, [email protected]

The TFCC consists of triangular fibrocartilage (TFC), meniscus homologue, ulnolunate ligament, ulnotriquetral ligament, radioulnar ligament, and sheath floor of the extensor carpi ulnaris (ECU). The TFCC functions as a stabilizer of the ulnocarpal and DRU joints, load distributor between ulna and ulnar carpus and introduces smooth forearm rotation. The TFCC is a hammock-like shape supporting an...

The possible role that tropical Pacific SSTs played in driving the megadroughts over North America during the medieval period is addressed. Fossil coral records from the Palmyra Atoll are used to derive tropical Pacific SSTs for the period from A.D. 1320 to A.D. 1462 and show overall colder conditions as well as extended multidecadal La Niña–like states. The reconstructed SSTs are used to force...

THOMAS PALMER, The admirable secrets ofphysick and chyrurgery, edited by Thomas Rogers Forbes, New Haven, Conn., and London, Yale University Press, 1984, 8vo, pp. x, 221, £25.00. One of the earliest documents of medical practice in the North American colonies is published here for the first time. This is a notebook, containing medical remedies, compiled in 1696 by Thomas Palmer (c. 1666-1743), ...

Translational elongation factor is an essential component for protein synthesis that functions by binding aminoacylated tRNAs to the ribosome-mRNA complex. This function is performed by EF-Tu in prokaryotes and eukaryotic organelles, and by EF-la in eukaryotes (for review see Miller and Weissbach, 1977). In lower photosynthetic eukaryotes, including Chlamydomonas (Baldauf and Palmer, 1990) and ...

The e.s.r. t spectra of respiratory membranes from mitochondria show an asymmetric signal with the major component in the region of g = 1.9 that has been attributed to 'non-haem iron' (Sands & Beinert, 1960; see also Beinert & Palmer, 1965). A symmetrical signal due to an organic radical (g 2.00) has also been found in respiratory membranes (Sands & Beinert, 1960), but has not been definitely a...