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Letter from David G. Plotkin (The Artists and Writers Dinner Club) to John Sloan, April 8, 1935
No full text1 leaf (double-sided)Letter from David G. Plotkin (The Artists and Writers Dinner Club) to John Sloan, April 8, 193
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The David W. Fentress Family Letters, 1856-1969
No full textTranscript of a letter by an unidentified author to David Fentress regarding sharing federal newspapers and the banning of federal newspapers in some areas. The author passes on the news of the war including the destruction of the Federal merchantmen by the Confederate fleet. He passes along world news: Russia preparing to go to War with Europe and how that could negatively affect the Confederacy. There is also speculation on the future of the war
The David W. Fentress Family Letters, 1856-1969
No full textTranscript of a letter by an unidentified author to David Fentress regarding sharing federal newspapers and the banning of federal newspapers in some areas. The author passes on the news of the war including the destruction of the Federal merchantmen by the Confederate fleet. He passes along world news: Russia preparing to go to War with Europe and how that could negatively affect the Confederacy. There is also speculation on the future of the war
Astrotylus Plotkin & Janussen 2007
No full textGenus Astrotylus Plotkin & Janussen, 2007 Diagnosis: Cushionshaped encrusting sponges with hispid surface. Choanosomal skeleton consists of radial tracts of principal megascleres, between which numerous microscleres and rare small megascleres are freely scattered. Cortical skeleton formed by the main tracts arising from the choanosome, diverging into bouquets, reinforced by the irregular palisade of small megascleres and echinating the surface. Megascleres are tylostyles, microscleres are astrotylostyles. Type species: Astrotylus astrotylus Plotkin & Janussen, 2007 (by original designation). Astrotylus astrotylus Plotkin & Janussen, 2007 (Fig. 3) Synonymy Astrotylus astrotylus— Plotkin and Janussen 2007: 1395, figs. 1–3. Material examined Holotype: SMF 10518 (1 specimen): PS 67 / 102 11. Paratypes: SMF 10517 (1 specimen): PS 67 /094 11; SMF 10519 (1 specimen): PS 67 / 102 11; SMF 10516 (1 specimen): PS 67 / 110 2. Description (emended from Plotkin & Janussen 2007) External morphology. Sponges are small cushionshaped encrustations on pebbles measuring up to 21 x 18 x 4 mm (fig. 3 A). Surface is uniformly or irregularly hispid, brownish or greyish in colour due to the covering sediments. A single exhalant papilla is very small or the sponges may lack a papilla. The cortex is greyish, hardly detachable and rather resilient. The choanosome is beige to greyish, soft but rather dense. Skeleton. The main choanosomal skeleton is constituted by the radial tracts of principal tylostyles (fig. 3 B). The thickness of these tracts in the basal choanosome measures 150–290 µm. The tracts branch, cross the cortex, where they diverge into bouquets, and make up the surface hispidation. The cortical bouquets of principal tylostyles are reinforced by an irregular palisade of small tylostyles. The cortex is 200–550 µm thick and the thickness of the surface hispidation is 570–2000 µm including the external area of dense sediment cover which measures 170–1200 µm. The aquiferous cavities, measuring 80–130 µm in diameter, are visible in the upper part of the cortex, among the cortical bouquets. The additional choanosomal skeleton is composed of freely scattered small tylostyles and microscleres—astrotylostyles. The tylostyles are very rare. Numerous astrotylostyles are uniformly distributed between the main tracts; their mean density is about 300–500 per 1 mm 2 of the section. We were unable to study the aquiferous system and skeleton architecture of the papillae because of their extremely weak development. Spicules. Two size categories of tylostyles are well distinguished, and astrotylostyles constitute a third category (see frequency distributions in Plotkin & Janussen 2007). Altogether, 120 spicules of each category were measured (30 spicules in each specimen; see particular results of measurements for each specimen ibidem). Megascleres are exclusively tylostyles with welldeveloped, terminally located, spherical or oval tyles. Principal tylostyles are usually straight and slender (figs. 3 C–D). Their dimensions are: length 9141814 5414 µm, tyle diameter 1117.2 28 µm, diameter of the shaft underneath the tyle 511.2 20 µm, maximal diameter of the shaft 816.7 24 µm. Small tylostyles are straight or rarely slightly curved, fusiform, with welldeveloped, terminal spherical tyles (fig. 3 E). They measure: length 217396 750 µm, tyle diameter 1013.2 18 µm, diameter of the shaft underneath the tyle 37.6 12 µm, maximal diameter of the shaft 513.3 19 µm. Astrotylostyles are straight or curved (fig. 3 F). Each spicule consists of a shaft with a small fungiform serrated tyle at one end (fig. 3 G), the other end bearing a multirayed starlike structure resembling an asterose spicule. The latter structure varies in regularity, its one ray being always a prolongation of the main spicule shaft. The dimensions of astrotylostyles are: length 50 71.0 93 µm, diameter of tyle 12.8 5 µm, diameter of the shaft underneath the tyle 11.6 3 µm, diameter of the shaft underneath the starlike formation 24.7 7 µm, diameter of the starlike formation 820.7 35 µm. Type locality: Antarctic: Northern Weddell Sea, ca. 4700–4900 m (known only from type locality). Remarks. The affinities of A. astrotylus with allied polymastiid species have been discussed by Plotkin and Janussen (2007).Published as part of Plotkin, Alexander S. & Janussen, Dorte, 2008, Polymastiidae and Suberitidae (Porifera: Demospongiae: Hadromerida) of the deep Weddell Sea, Antarctic *, pp. 95-135 in Zootaxa 1866 on pages 100-102, DOI: 10.5281/zenodo.18387
Supplemental Material for Carja and Plotkin, 2019
No full textSupplementary Material for the paper 'Evolutionary rescue through partly heritable phenotypic variability', Carja and Plotkin, 2019
Mark Plotkin: Ethnobotonist and Social Entrepreneur
No full textEducated at Harvard, Yale and Tufts University, the Louisiana native has spent decades immersed in South America\u27s tropical jungles learning from shamans about traditional plant use. In 1996, he co-founded the Amazon Conservation Team (ACT) and has since worked with 32 tribes to map, manage and protect 70 million acres of ancestral rain forest.
Beyond conservation, Plotkin\u27s work has the potential to significantly impact millions of people in Hampton Roads and around the world. He believes lessons learned from indigenous plant use could be instrumental in overcoming drug-resistant bacteria and treating diseases such as diabetes, where Western medicine has fallen short.
Plotkin\u27s efforts have garnered international acclaim, numerous national media appearances and even an Academy Award nomination for the IMAX film Amazon, in which he played a leading role. Time magazine hailed him as an Environmental Hero for the Planet and Smithsonian magazine placed him in company with Bill Gates, Steven Spielberg and Wynton Marsalis as one of 35 Who Made a Difference. Other accolades include being the first environmentalist to win the Social Entrepreneur designation from the Skoll Foundation and an award for International Conservation Leadership from celebrated primate researcher Jane Goodall
PLOTKIN SEMEN YAKOVLEVICH (TO THE 110TH ANNIVERSARY)
Get PDFThe article tells about life and fate of S.Ya. Plotkin, whose 110-th anniversary of birth was marked on March 2016. He was born in 1906 in Melitopole town (Ukraine). Having graduated at the Moscow Institute of Fine Chemical Technology in 1931, he was asked for administration works firstly as the director of the Institute and then as the member of the All-Union Committee for High School problems. During all his life S.Ya. Plotkin successfully combine administrative, scientific, pedagogical and journalistic activities. He was the expert in the problems of hard alloys and powder metallurgy, professor, editor in chief of the journal «History of Natural Sciences and Technique». He was the member of the Journalist’s Union of the USSR, Honorary member of the International Institute for the Sciences of Sintering and Honorary worker of Culture of Russian Federation
Portrait of author David Foster at the National Library of Australia, Canberra, 8 June 2011 /
No full textTitle from acquisitions documentation.; Part of the collection: Portraits of author David Foster at the National Library of Australia, Canberra, 8 June 2011.; Acquired in digital format; access copy available online.; Mode of access: Online.; Photographed by a staff member of the National Library of Australia
Author David Foster with academic Jeff Doyle at the National Library of Australia, Canberra, 8 June 2011 /
No full textTitle from acquisitions documentation.; Part of the collection: Portraits of author David Foster at the National Library of Australia, Canberra, 8 June 2011.; Acquired in digital format; access copy available online.; Mode of access: Online.; Photographed by a staff member of the National Library of Australia
Author David Foster and academic Jeff Doyle at the National Library of Australia, Canberra, 8 June 2011 /
No full textTitle from acquisitions documentation.; Part of the collection: Portraits of author David Foster at the National Library of Australia, Canberra, 8 June 2011.; Acquired in digital format; access copy available online.; Mode of access: Online.; Photographed by a staff member of the National Library of Australia
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