1,731 research outputs found
Sh. Imamura: Vorstudien über die Erregbarkeitsverhältnisse herzhemmender und motorischer Nerven gegenüber verschiedenen elektrischen Reizen. Arch. f. Physiol. (3 u. 4), 184-196. 1901
No full textSH. IMAMURA: VORSTUDIEN ÜBER DIE ERREGBARKEITSVERHÄLTNISSE HERZHEMMENDER UND MOTORISCHER NERVEN GEGENÜBER VERSCHIEDENEN ELEKTRISCHEN REIZEN. ARCH. F. PHYSIOL. (3 U. 4), 184-196. 1901
Zeitschrift für Psychologie und Physiologie der Sinnesorgane (-)
Zeitschrift für Psychologie und Physiologie der Sinnesorgane (28) (a0001)
Sh. Imamura: Vorstudien über die Erregbarkeitsverhältnisse herzhemmender und motorischer Nerven gegenüber verschiedenen elektrischen Reizen. Arch. f. Physiol. (3 u. 4), 184-196. 1901 (28) (p0052
Zelandopsis morimotoi Imamura 1977
No full textZelandopsis morimotoi Imamura, 1977 (Figure 4A-F) Material examined — New Zealand (all leg. H. Smit): 1/1/0, Bob’s Peak Creek, interstitial dig, western slope, Taipare Bay, Marlborough Sounds, South Island, 41°00.394’ S 173°45.248’ E, alt. 96 m asl, 2-1-2019; 0/1/0, Bob’s Peak Creek, western slope, Taipare Bay, Marlborough Sounds, South Island, 41°00.394’ S 173°45.248’ E, alt. 96 m asl, 2-1- 2019; 0/1/0, Unnamed stream, tributary of Bob’s Peak Creek, Taipare Bay, South Island, 41°00.499’ S 173°44.825’ E, alt. 124 m asl, 2-1-2019; 1/0/0, Upper course of Old Homestead Creek, interstitial dig, Taipare Bay, South Island, 41°01.119’ S 173°42.807’ E, alt. 179 m asl, 2-1-2019. Description — As given for genus. Frontal idiosoma margin concave. Anterior part of dorsum with spine-like structures. Male: Idiosoma 364–373 long ventrally, 356–365 long dorsally and 254–288 wide. Venter posteriorly with a short, apically rounded extension. Gonopore narrow, 24 long; an area surrounding the gonopore without idiosoma pores. Acetabula in the posteroventral sclerotization far posterior to gonopore, 7–8 pairs in irregular rows. Length of P1-P5: 18, 42, 26, 48, 22 (till tip of segment). P2 ventrally with three denticles, P3 ventrally with one denticle. Length of I-leg-4-6: 40, 44, 56 (till tip of segment). IV-leg-2 longer than other segments. Length of IV-leg-4 46, 52, 26. Female: Idiosoma 389–413 long ventrally, 381–405 long dorsally and 300–328 wide. Venter posteriorly with a pair of short, apically rounded extensions. Gonopore 64 long. Number of acetabula difficult to ascertain, but very likely around 20 pairs. Lengths of P1-P5: 18, 46, 26, 52, 24 (till tip). P2 ventrally with 2–5 denticles, P3 with one denticle. Length of I-leg-4-6: 43, 50, 56 (till tip of segment). Length of IV-leg-4-6: 49, 54, 50. Remarks — The specimens collected in this study match the description given by Imamura (1977). Imamura was not able to find the acetabula in his only male specimen. As the male was collected during a zoological expedition, and not by Imamura himself, it is likely that it was fixed in ethanol. This makes specimens dark and some structures, like the indistinct acetabula, are difficult to see. Imamura illustrated some indistinct structures posterior to the male gonopore, apparently not aware that these were the acetabula. Another feature not mentioned by Imamura is the long second segments of legs I-III, which are longer than the other segments of these legs. Habitat. Interstitial, but occasionally collected in superficial waters.Published as part of Smit, Harry, 2019, New and rare species of hyporheic water mites from New Zealand (Acari: Hydrachnidia: Aturidae, Momoniidae with the description of two new genera, one new subgenus and one new species, pp. 364-373 in Acarologia 59 (3) on pages 370-372, DOI: 10.24349/acarologia/20194339, http://zenodo.org/record/517369
Factors responsible for the limited inland extent of sand deposits on Leyte Island during 2013 Typhoon Haiyan
No full textPrevious geological studies suggest that the maximum inland extent of storm-induced sand deposits is shorter, but their thickness is larger, than those of tsunami-induced sand deposits. However, factors that determine the maximum extent and thickness of storm deposits are still uncertain. We conducted numerical simulations of storm surge, waves, and sediment transport during Typhoon Haiyan in order to understand the distribution and sedimentary processes responsible for storm deposits. Numerical results showed that wave-induced currents slightly offshore were strong, but attenuated rapidly in the inland direction after wave breaking. Therefore, sediments were not transported far inland by waves and storm surge. Consequently, the maximum inland extent of storm deposits was remarkably shorter than the inland extent of inundation. We also revealed that vegetation (roughness coefficient) and typhoon intensity greatly affect the calculation of maximum extent and thickness distribution of storm deposits. As the duration of wave impact on a coast is relatively long during a storm (hours, compared to minutes for a tsunami), sediments are repeatedly supplied by multiple waves. Therefore, storm deposits tend to be thicker than tsunami deposits, and multiple layers can form in the internal sedimentary structure of the deposits. We infer that limitation of the sand deposit to within only a short distance inland from the shoreline and multiple layers found in a deposit can be used as appropriate identification proxies for storm deposits
Surface plasmon resonance biosensing of the monomer and the linked dimer of the variants of protein G under mass transport limitation
No full textAbstractThis article presented the data related to the research article entitled “Calibration-free concentration analysis for an analyte prone to self-association” (H. Imamura, S. Honda, 2017) [1]. The data included surface plasmon resonance (SPR) responses of the variants of protein G with different masses under mass transport limitation. The friction factors of the proteins analyzed by an ultracentrifugation were recorded. Calculation of the SPR response of the proteins was also described
Platycephalus australis Imamura, 2015, sp. nov.
No full textPlatycephalus australis sp. nov. Proposed common English name: Australian bartail flathead (Figs. 34 –35, 36 A, 37; Tables 13–14) Platycephalus indicus (not Linnaeus, 1758): Paxton & Hanley, 1989: 469; Knapp, 1999: 2409, unnumbered fig. (in part); Hoese et al., 2006: 942. Material examined. Holotype: WAM P. 29859 -001, 477 mm SL, Exmouth Gulf, WA, Australia (22 ° 28 ’S, 114 ° 13 ’E), 22 May 1988. *Tending to decrease with growth. **Nine or 10 caudal-fin rays in specimens <50 mm SL (incompletely branched caudal fin). Paratypes (11 specimens, from north and northeastern Australia): AMS I. 21831 -028, 294 mm SL, Arafura Sea (10 ° 53 ’S, 132 °02’E), 36–40 m depth, 14 Nov. 1980; AMS I. 34397 -046, 273 mm SL, AMS I. 34397 -075, 214 mm SL, HUMZ 215745 (ex. AMS I. 34397 -075), 184 mm SL, South Arm Channel, Port Clinton, Qld (23 ° 34.13 ’S, 150 ° 44.75 ’E), 10 m depth, 25 Oct. 1993; CSIRO 3916 -01, 415 mm SL, west of Weipa, Gulf of Carpentaria, Qld (12 ° 32 ’S, 141 ° 28 ’E – 12 ° 31 ’S, 141 ° 28 ’E), 22 m depth, 8 March 1995; CSIRO H 6714 -01, 232 mm SL, southeast of Bowling Green Bay, Qld (19 ° 28 ’S, 147 ° 32 ’E – 19 ° 27 ’S, 147 ° 32 ’E), 15 m depth, 2 Dec. 2003; NTM S. 10414 -004, 2 of 7 specimens, 125–126 mm SL, Ludmilla Creek, Darwin, NT (12 ° 25 ’S, 130 ° 51 ’E), 0–0.5 m depth, 26 Nov. 1981; NTM S. 10738 -013, 2 specimens, 123–147 mm SL, Buchanan Island, Bathurst Island, NT (11 ° 49 ’S, 130 ° 39 ’E), 18 Nov. 1982; NTM S. 17108 -012, 229 mm SL, Haycock Reach, Darwin Harbour, NT (12 ° 34.99 ’S, 130 ° 57.67 ’E), 8–9 m depth, 28 March 2011. Non-types (13 specimens, from north and northeastern Australia): AMS I. 22720 -017, 1 of 2 specimens, 51.4 mm SL, Three Mile Creek, Cape Pallarenda, Townsville, Qld (19 ° 11.14 ’S, 146 ° 46 ’E), 0–1 m depth, 8 Oct. 1981; AMS I. 25676 -002, 310 mm SL, south of Moreton Bay, Qld (27 ° 25 ’S, 153 ° 20 ’E), 2 March 1985; NTM S. 10414 - 0 0 4, 5 of 7 specimens, 63.6–106 mm SL, Ludmilla Creek, Darwin, NT (12 ° 25 ’S, 130 ° 51 ’E), 0–0.5 m depth, 26 Nov. 1981; NTM S. 10553 -007, 6 specimens, 81.5–109 mm SL, East Arm Mudflats, Darwin, NT (12 ° 29.5 ’S, 130 ° 34 ’E), 6 Sep. 1982. Diagnosis. A species of Platycephalus with the following combination of characters: first dorsal fin with a single small isolated spine anteriorly; second dorsal-fin rays 13–14, usually 13: anal-fin rays 13; pectoral-fin rays 19–21, usually 20; gill rakers 1–2 + 3–8 = 4–10 (tending to decrease with growth); postorbital length 51.6–63.6 % HL; snout, area anteroventral to eye, interorbit, and occipital region scaled; upper iris lappet usually simple, triangular; a finger-like interopercular flap present; upper jaw without large caniniform teeth; teeth absent on dorsal surface of anterolateral edge of upper jaw; palatine teeth in two rows; vomerine teeth usually in one row; caudal fin with a yellow marking on midline when fresh. Description. Counts and measurements shown in Table 13. Data for all specimens, including both non-types and paratypes, presented first, followed by holotype in parentheses. Body greatly depressed, mostly covered with ctenoid scales, but some cycloid scales on undersurface. Head greatly flattened, length 2.8–3.2 (3.2) in SL; scales covering snout, a small area anteroventral to eye, interorbit, occipital region, nape, and postorbital and opercular regions; suborbital region naked. Snout robust, longer than orbital diameter, length 3.6 –4.0 (3.8) in HL. Upper surface of eye without papillae. Upper iris lappet simple, triangular dorsally; lower weakly convex (unobservable in holotype) (Fig. 35 B). Interorbital width 5.5–15.3 (6.3) in HL, increasing with growth; orbital diameter 5.4 –8.0 (8.4) in HL, decreasing with growth; interorbit narrower than orbital diameter in smaller specimens, becoming equal to or wider than orbital diameter by 232 mm SL (including holotype). Spines and ridges on top and side of head weakly developed (Fig. 35 B). Nasal usually with a single distinct spine in 123 mm SL or smaller specimens (absent in 106 mm SL specimen), a small or rudimentary spine, or spine absent in larger specimens (absent in holotype). Lachrymal with two embedded antrorse spines. Single preocular spine present. Single preorbital spine present or absent in 109 mm SL or smaller specimens, absent in larger specimens (including holotype). Suborbital ridge usually with a spine below and slightly posterior to posterior margin of eye, often with a spine below and slightly anterior to middle of eye in 125 mm or smaller specimens (lacking both spines on right side of 123 mm SL specimen); with or without a spine below and slightly posterior to posterior margin of eye in 175 to 270 mm SL specimens; and without spines in 273 mm SL or larger specimens (including holotype). Supraorbital ridge serrated posteriorly, with one to seven small spines (two on left and one on right in holotype). Single postocular spine present. Pterotic with one to six spines (one). Frontal and supraoccipital with entirely smooth ridges. Parietal with one or two spines (rudimental spine on left, spine absent on right). Supratemporal usually with one spine (sometimes two or zero) in 294 mm SL or smaller specimens (spines absent in 415 mm SL specimen and holotype). Posttemporal usually with one spine; rarely absent in some specimens in 125 mm SL or larger (including holotype). Supracleithrum usually with one spine (spine absent only in holotype). Preopercle with two distinct spines; lower spine slightly longer than upper (including holotype) or spines subequal, not reaching posterior margin of opercle; upper spine with supplementary spine in 147 mm SL or smaller specimens, usually without in 184 mm SL or larger specimens (including holotype) (rudimental supplementary spine in 294 mm SL specimen). Opercle with two spines, lacking prominent ridge. Finger-like interopercular flap present; margin of interopercle not scalloped. Maxilla reaching beyond anterior margin of orbit, length 2.6–2.8 (2.6) in HL, tending to extend posteriorly with growth [just below posterior margin of orbit in largest examined specimen (holotype)]. Teeth in bands on jaws and palatine, a single shallow V-shaped or crescentic patch on vomer (shallow crescentic patch in holotype); tooth band on upper jaw lacking distinct notch mesially. Upper jaw with several large conical or small caniniform (large conical in holotype) teeth anteromedially, villiform teeth anterolaterally, teeth tending to be larger medially; remainder of jaw with small conical and villiform teeth; teeth absent on dorsal surface of anterolateral edge of upper jaw. Lower jaw usually with one villiform tooth row laterally (a narrow villiform band in holotype) and one small to moderate conical tooth row medially, teeth tending to become larger posteriorly; lateral villiform teeth forming two or three rows anteriorly in several paratypes and non-types. Palatine with two tooth rows; inner row with small conical teeth, outer row with small villiform teeth. Vomer with single villiform to moderate conical (moderate conical in holotype) tooth row; some specimens 147 mm SL or larger with additional villiform teeth anteriorly and/or posteriorly (teeth anteriorly in holotype). Lip margins without papillae. Fleshy sensory tubes on suborbitals and preopercle not covering cheek region. Pored scales in lateral line each with a pair of sensory ducts and exterior openings posteriorly. First dorsal fin originating posterior to opercular margin. First and second dorsal fin narrowly separated. Pectoral fin rounded posteriorly, length 5.6–8.1 (7.1) in SL. Posterior tip of pelvic fin reaching between anus and base of fourth anal-fin ray (reaching anal-fin origin), length 4.0– 5.1 (4.5) in SL. Caudal fin usually slightly rounded or mostly straight posteriorly (slightly concave in holotype), length 5.5–6.8 (7.2) in SL. Color in alcohol. In holotype (Fig. 34), body and head brown above, pale below. Head with single indistinct, dark brown band crossing occipital and anterior opercular regions. Side of head with many small dark brown spots. Body with two dark brown bands below second dorsal fin; anterior band broad, posterior band narrow. First and second dorsal, pectoral and pelvic fins with small, dark brownish spots along rays. Pectoral and pelvic fins with paler outer margins. Anal fin pale, with melanophores along membrane between seventh to last fin rays; melanophores thicker posteriorly. Caudal fin with the following markings: a long dark brown band on both the upper and lower portions; short blackish band above long dark brown band on upper portion; short dark brown band below long dark brown band on lower portion; small brownish spots on dorsal portion. In paratypes and non-types, caudal fin usually with three dark brown or black bands; middle band paler than dorsal and ventral bands. In CSIRO H 3916 -01 (415 mm SL, paratype) caudal fin with four bands; middle two bands brownish, and dorsal and ventral two bands dark brown. Color when fresh (based on color photographs; Figs. 36 A, 37). Caudal fin with yellow marking on midline; its size variable, small (Fig. 36 A), medium (Fig. 37 A) or large (Fig. 37 A). Other coloration similar to preserved condition. Distribution. Known from northern Australia, from Exmouth Gulf, WA (22 ° 28 ’S) to south of Moreton Bay, Qld (27 ° 25 ’S) in depths from at least 0.5–36 m (this study). Size. Recorded maximum length 477 mm SL (554 mm TL) (this study; Fig. 34). Etymology. The specific name australis derived from Latin is proposed in reference to its type locality, Australia. Remarks. Platycephalus australis sp. nov. has previously been misidentified as Platycephalus indicus, both species being characterized by usually 13 second dorsal- and anal-fin rays, the snout, area anteroventral to the eye, interorbit and occipital region scaled, large caniniform teeth absent on the upper jaw, a finger-like interopercular flap, palatine teeth arranged in two rows and the caudal fin with a yellow marking on the middle when fresh. In fact, the yellow mid-caudal fin marking occurs only in the above two species. However, P. australis sp. nov. is separable from P. i n di c us in having fewer total gill rakers (4–10 in P. australis vs. 7–10 in P. i n di c us, tending to decrease with growth in both species) and a longer postorbital region (51.6–63.6 % HL vs. 51.4–61.6 % HL) than the latter at a comparable size, although a considerable overlap occurs (Fig. 38). In addition, P. australis sp. nov. differs from P. indicus in having a greater number of pectoral-fin rays (19–21, usually 20 vs. 18-20, usually 19) (Table 14). The validity of P. australis sp. nov. has also been demonstrated from genetically reconstructed phylogenetic relationships of Platycephalus, showing that “ P. indicus ” from Australia, including a specimen with a yellow marking on the mid-caudal fin (thus probably P. australis sp. nov.) and P. i nd i c u s from the Indian Ocean and Indonesia are included in different monophyletic clades, the degree of speciation between the two species being similar to that of P. conatus and P. richardsoni (sister species) (W. White, personal communication, 20 June 2013). A detailed comparison of P. australis sp. nov. and P. i ndicus is presented in Table 13. Among other species with usually 13 second dorsal- and anal-fin rays, P. australis sp. nov. is easily distinguished from P. endrachtensis in having a broader interorbit and longer postorbital region (interorbital width 6.5–18.1 % HL and postorbital length 51.6–63.6 % HL in P. australis sp. nov. vs. 7.7 –12.0% HL and 50.7–56.9 % HL in P. endrachtensis) (Fig. 30), from P. angustus, P. cultellatus, P. f u s cu s, and Platycephalus sp. 1 and sp. 2 (sensu Nakabo, 2002) in having the first dorsal fin with a single small isolated spine anteriorly (usually two in the other species), and from P. westraliae in having a simple triangular upper iris lappet (usually broad and bilobed in P. westraliae).Published as part of Imamura, Hisashi, 2015, Taxonomic revision of the flathead fish genus Platycephalus Bloch, 1785 (Teleostei: Platycephalidae) from Australia, with description of a new species, pp. 151-207 in Zootaxa 3904 (2) on pages 199-203, DOI: 10.11646/zootaxa.3904.2.1, http://zenodo.org/record/23355
Are inundation limit and maximum extent of sand useful for differentiating tsunamis and storms?: An example from sediment transport simulations on the Sendai Plain, Japan
No full textWe examined the quantitative difference in the distribution of tsunami and storm deposits based on numerical simulations of inundation and sediment transport due to tsunami and storm events on the Sendai Plain, Japan. The calculated distance from the shoreline inundated by the 2011 Tohoku-oki tsunami was smaller than that inundated by storm surges from hypothetical typhoon events. Previous studies have assumed that deposits observed farther inland than the possible inundation limit of storm waves and storm surge were tsunami deposits. However, confirming only the extent of inundation is insufficient to distinguish tsunami and storm deposits, because the inundation limit of storm surges may be farther inland than that of tsunamis in the case of gently sloping coastal topography such as on the Sendai Plain. In other locations, where coastal topography is steep, the maximum inland inundation extent of storm surges may be only several hundred meters, so marine-sourced deposits that are distributed several km inland can be identified as tsunami deposits by default. Over both gentle and steep slopes, another difference between tsunami and storm deposits is the total volume deposited, as flow speed over land during a tsunami is faster than during a storm surge. Therefore, the total deposit volume could also be a useful proxy to differentiate tsunami and storm deposits.Hydraulic Structures and Flood Ris
Type status and taxonomic accounts for Ambiserrula jugosa (McCulloch 1914) and Inegocia harrisii (McCulloch 1914) (Scorpaeniformes: Platycephalidae)
No full textPlatycephalids Ambiserrula jugosa (McCulloch 1914) and Inegocia harrisii (McCulloch 1914) were described as new species based on 10 and 2 specimens, respectively, collected from the coast of Queensland, Australia by the F.I.S. Endeavour in 1910. McCulloch (1914) listed additional specimens at the end of the description, which he did not exclude from the type series. Previous authors considered the specimens, which McCulloch stated the species to have been described from, to be types of the two species, it was revealed that all 43 and 9 specimens included in these species by McCulloch are type specimens, according to the fourth edition of International Code of Zoological Nomenclature, stating "type series of a nominal taxon consists of all the specimens included by the author in the new nominal taxon" in Article 72.4.1. In I. harrisii, it was assumed that a specimen later designated as the lectotype was figured with the original description. Because its plate legend includes the words "sp. nov. Type", the specimen is regarded to be the holotype of the species and the designation of the lectotype was unnecessary. This study newly recognizes additional 12 paratypes of A. jugosa and 5 paratypes of I. harrisii, and gives taxonomic accounts of the two species to show range extensions of intraspecific variation and distribution newly found. Also comments are given about the type status of other species taken by the Endeavour described by McCulloch in a series of five papers
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