31,571 research outputs found
Chaetocladius togatenellus Yamamoto & Yamamoto 2018, comb. n.
No full textChaetocladius togatenellus (Sasa et Okazawa, 1992) comb. n. Bryophaenocladius togatenellus Sasa et Okazawa, 1992: 135. Specimen examined: Japan: Toyama Pref., Toga-Mura, Momose, holotype ♂ of Bryophaenocladius togatenellus, 31. v. 1990, T. Okazawa & M. Sasa [specimen No. 182:73 (NSMT-I-Dip 4716)]. The species was treated as a member of Bryophaenocladius by Yamamoto (2004) based on the original description. However, it becomes clear that the holotype of the species bears such features as follows: tarsomeres 1–2 of mid and hind legs with pseudospurs, sensilla chaetica present on tarsomere 1 of hind leg; lateral spines of mid and hind tibiae diverge from shaft of spur; small virga preset, anal point hyaline and bare. These features indicate that the species should be transferred to the genus Chaetocladius Kieffer. Kobayashi (2012) reported that B. togatenellus and Paratrissocladius sudagaicedeus each is a member of Chaetocladius by citing from the abstract of the meeting for the study of Japanese chironomid workers (Yamamoto & Yamamoto, 2007) which was not published formally.Published as part of Yamamoto, Nao & Yamamoto, Masaru, 2018, Taxonomic information on some Japanese Chironomidae (Diptera) described by Dr. M. Sasa (†), pp. 516-528 in Zootaxa 4514 (4) on page 517, DOI: 10.11646/zootaxa.4514.4.5, http://zenodo.org/record/260935
Letter from Tom Yamamoto to Ma & Pa Waegell, November 28, 1942
No full textTyped correspondence from Tom Yamamoto to the Waegells describing conditions in Topaz incarceration camp and current events. Yamamoto comments on the situation in France during World War II, the position of the War Relocation Authority on jobs for incarcerees, and working conditions in the camp.The Japanese American Archival Collection documents the people, places, and daily life of Japanese Americans, primarily those who lived in the once thriving community of pre-war Florin in the Sacramento region, as well as the conditions in American incarceration camps during World War II. The approximately 7,000 original items include personal and official letters, photographs, diaries, arts and crafts, newsletters, textiles, camps artifacts, yearbooks and other publications
Letter from Tom Yamamoto to Mrs. Margaret Waegell, 1941
No full textHandwritten correspondence from Tom Yamamoto to Margaret Waegell.The Japanese American Archival Collection documents the people, places, and daily life of Japanese Americans, primarily those who lived in the once thriving community of pre-war Florin in the Sacramento region, as well as the conditions in American incarceration camps during World War II. The approximately 7,000 original items include personal and official letters, photographs, diaries, arts and crafts, newsletters, textiles, camps artifacts, yearbooks and other publications
Letter from Tom Yamamoto to Margaret Waegells, March 5, 1942
No full textHandwritten correspondence from Tom Yamamoto to Margaret Waegell.The Japanese American Archival Collection documents the people, places, and daily life of Japanese Americans, primarily those who lived in the once thriving community of pre-war Florin in the Sacramento region, as well as the conditions in American incarceration camps during World War II. The approximately 7,000 original items include personal and official letters, photographs, diaries, arts and crafts, newsletters, textiles, camps artifacts, yearbooks and other publications
Letter from Tom Yamamoto to Ma & Pa Waegell
No full textHandwritten correspondence from Tommy [Tom] Yamamoto to the Waegells requesting pickup of boxes from Yamamoto's parent's house in French Camp.The Japanese American Archival Collection documents the people, places, and daily life of Japanese Americans, primarily those who lived in the once thriving community of pre-war Florin in the Sacramento region, as well as the conditions in American incarceration camps during World War II. The approximately 7,000 original items include personal and official letters, photographs, diaries, arts and crafts, newsletters, textiles, camps artifacts, yearbooks and other publications
Letter from Tom Yamamoto to Mr. and Mrs. Waegell, 1945
No full textHandwritten correspondence from Tom Yamamoto to the Waegells describing his current situation, future plans, and the status of incarcerees in the Los Angeles area.The Japanese American Archival Collection documents the people, places, and daily life of Japanese Americans, primarily those who lived in the once thriving community of pre-war Florin in the Sacramento region, as well as the conditions in American incarceration camps during World War II. The approximately 7,000 original items include personal and official letters, photographs, diaries, arts and crafts, newsletters, textiles, camps artifacts, yearbooks and other publications
Letter from Tom Yamamoto to Waegell family, April 25, 1942
No full textHandwritten correspondence from Tom Yamamoto to the Waegells describing the weather, conditions, sleeping arrangements, food, administration, and daily life at Topaz incarceration camp in Utah.The Japanese American Archival Collection documents the people, places, and daily life of Japanese Americans, primarily those who lived in the once thriving community of pre-war Florin in the Sacramento region, as well as the conditions in American incarceration camps during World War II. The approximately 7,000 original items include personal and official letters, photographs, diaries, arts and crafts, newsletters, textiles, camps artifacts, yearbooks and other publications
Letter from Tom Yamamoto to Ma and Pa Waegell, November 23, 1942
No full textTyped correspondence from Tom Yamamoto to the Waegells describing living conditions in Topaz incarceration camp and Yamamoto's current situation. Yamamoto discusses his work as a painter and his intentions to seek a position as an art teacher on the east coast. He also describes sleeping arrangements, food, and working conditions in the camp.The Japanese American Archival Collection documents the people, places, and daily life of Japanese Americans, primarily those who lived in the once thriving community of pre-war Florin in the Sacramento region, as well as the conditions in American incarceration camps during World War II. The approximately 7,000 original items include personal and official letters, photographs, diaries, arts and crafts, newsletters, textiles, camps artifacts, yearbooks and other publications
Polypedilum (Uresipedilum) dissimilum Yamamoto & Yamamoto, 2015, sp. nov.
No full textPolypedilum (Uresipedilum) dissimilum sp. nov. (Figs. 7–10) Type material. Holotype male (No. OPU-NY 501). Japan, Hokkaido, Monbetsu-gun, Kamiyubetsu, 9. ix. 2008, Y. Yamaguchi. Diagnosis. The species resembles P. convictum (Walker, 1856) in general appearance and the structure of the male hypopygium. However, it is easily distinguished by having a IX tergum with T-shaped tergal band which is unique to species. Etymology. From Latin dissimilis, differ, referring to shape of tergal band differing from any other member of subgenus Uresipedilum. Male (n= 1). Total length 2.8 mm. Wing 1.6 mm long. 0.5 mm wide; wing length / wing width 3.20. Coloration. Predominantly pale yellow except lateral vittae of scutum, medioanepisternum II and preepisternum II pale brown. Head. Temporal setae 12. AR 1.58. Palpomere lengths (in Μm): 40, 40, 112, 100, 176; palpomeres with 1, 4, 13, 11, 9 setae, respectively. Clypeus with 11 setae. Cibarial pump 40 Μm long, weakly developed. Thorax. Lateral antepronotal seta absent; dorsocentrals 12 including no humerals, uniserial; acrostichals 10, biserial, beginning just behind antepronotum; prealars 5, uniserial; supraalars 0. Scutellum with 15 setae, biserial. Wing (Fig. 7). VR 1.21. Brachiolum with 1 median seta; with 8 basal, 3 median, 11 subapical sensilla campaniformia. R, R 1 and R 4 + 5 with 18, 13, 22 setae, respectively. Legs (Figs. 8–9). Fore tibia with apical rounded scale without spine. Fore, mid and hind coxae with 3, 6, 3 setae, respectively; fore, mid and hind trochanters with 8, 5, 8 marginal setae, respectively. Lengths and proportions of legs as in Table 2. Hypopygium (Fig. 10). Tergum IX with T-shaped tergal band and with 2 median setae. Anal point long and slender, slightly constricted at middle, with rounded apex. Superior volsella with basal portion wide and its outer portion slightly produced posteriorly, bearing microtrichia on dorsolaterally, and with 1 long setae on its outer portion of posterior margin, with bare short projection. Inferior volsella rather wide and strongly constricted at outer margin of apical 1 / 4, not reaching the tip of anal point, with 17 setae on apical 1 / 3 of which the apical one is long and extending posteriorly. Sternapodeme narrow, without anterolateral projection, with anterior margin nearly 1 / 4 as wide as gonocoxite width. Gonocoxite with 5 uniserially arranged setae on its inner margin. Gonostylus long, lunate, with 8 setae on inner margin of apical 2 / 3. Distribution. Japan (Hokkaido).Published as part of Yamamoto, Nao & Yamamoto, Masaru, 2015, A revised subgeneric position for Polypedilum (Probolum) simantokeleum, with description of a new Uresipedilum species in Japan (Diptera: Chironomidae), pp. 439-445 in Zootaxa 3999 (3) on page 442, DOI: 10.11646/zootaxa.3999.3.9, http://zenodo.org/record/23283
First-principles calculation of defect energetics in cubic-BaTiO3 and a comparison with SrTiO3
No full textThe structural relaxation and formation energies of intrinsic vacancies in cubic-BaTiO3 were studied by using a first-principles planewave-based pseudopotential calculation. The calculated defect formation energies and the atomic relaxations were compared with previously reported data for SrTiO3 [Tanaka T, Matsunaga K, Ikuhara Y, Yamamoto T. Phys Rev B 2003;68:205213]. It was found that the formation energies of the partial Schottky species, V-Ti(2-) + V-O(2+) and V-Ba(2-) + V-O(2+), are the lowest in the oxidized condition. In contrast, as the oxygen chemical potential decreased, namely the reduced condition, the O vacancy becomes dominant in cubic-BaTiO3. Concerning the atomic relaxation, it was found that BaTiO3 and SrTiO3 show a difference in magnitude. It was also found that the overall vacancy formation energy in BaTiO3 is higher than that in SrTiO3. (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved
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