142,604 research outputs found
Hexapleomera urashima Tanabe 2017
No full textHexapleomera urashima Tanabe et al., 2017 [Japanese name: Urashima-tanaisu] Figure 1A Hexapleomera urashima Tanabe et al., 2017, 146–160, figs 2–6; Kakui & Tanabe 2018, 6, fig. 2. Material examined. Type material: Holotype (female, ICHUM-5381), allotype (male, ICHUM-5382), and five female and five male paratypes (ICHUM-5383–5387, 5389–5393); for detailed information on these specimens, see Tanabe et al. (2017). Other material: one female (ICHUM-5848; BL 2.54 mm, CW 0.58 mm), seven slides and one vial, INSD accession number LC474839, collected from epiphytic algae on a loggerhead sea turtle bycaught in a set-net (left tag no. 13445; SCL 59.5 cm, sex indeterminate), Funakoshi Bay, Iwate Prefecture (39°24'48"N 142°01'23"E), 2.viii.2017, by C. Kinoshita and T. Fukuoka; one female (ICHUM-5950; BL 3.50 mm, CW 0.83 mm), one vial, INSD accession number LC485015, collected from epiphytic algae on a nesting loggerhead sea turtle (left tag no. Y7115; SCL 85.3 cm, female) on Nagata-hama, Yakushima Island, southern Japan (30°24.933'N, 130°26.352'E), 30.vi.2016, by Y. Tanabe. Amended diagnostic characteristics. Labium with palp fused to outer lobe. Maxilliped with coxa bearing two setae; endite with two tiny dorso-subdistal and two distal spiniform setae. Cheliped with 5–7 dorsodistal simple setae on carpus; region between bases of dactylus and fixed finger with five or six simple setae. Propodus of pereopod 1 with inner subdistal plumose seta. Pleopodal rami with slight pigmentation (retained in ethanol). Basal article of pleopod 3 with two outer setae. Uropod with four articles, including basal article. Supplemental information on female and male morphology. Pleopodal rami with slight pigmentation (retained in ethanol; Fig. 1A). Variation and stability. We reexamined the holotype, allotype, and five female and five male paratypes, and observed one additional specimen of H. urashima. Table 3 lists the states for eight characters listed in Tanabe et al. (2017) and three characters we added. We did not check following four characters, which showed variation among specimens in Tanabe et al. (2017): the numbers of setae i) on the maxillipedal basis; ii) in the region posterior to eye; iii) in the inner region of the endopod of pleopods 1, 2, and 3; and iv) on the maxillular palp. In addition to the four stable characters presented in Tanabe et al. (2017), our observation of the type specimens and one additional specimen (seven females and six males in total) revealed: i) a single inner subdistal plumose seta on the pereopod-1 propodus; ii) 5–6 setae in the region between the bases of the chelipedal dactylus and fixed finger; iii) 5–7 setae in the dorsodistal region of the chelipedal carpus; iv) five spiniform setae on the carpus of pereopods 4–6; and v) slight pigmentation on the pleopodal rami (Fig. 1A). Genetic information. A partial COI sequence (655 nt, translating to 218 amino acids) for one H. urashima specimen collected off the eastern coast of Iwate Prefecture (ICHUM-5848; INSD accession number LC474839) is identical to one of two haplotype sequences reported for the species by Tanabe et al. (2017) (INSD accession number LC322243). A partial 18S sequence (1942 nt) was determined in one specimen collected from Yakushima Island (ICHUM-5950; INSD accession number LC485015). Distribution. This species is known from the surface of carapaces of loggerhead sea turtles (Caretta caretta) collected at Yakushima Island (Tanabe et al. 2017) and off the eastern coast of Iwate Prefecture (this study), and from among the fouling community on a tether line on Yakushima Island (Kakui & Tanabe 2018). Remarks. Tanabe et al. (2017) did not report which specimen was used for illustrations of the cheliped (fig. 3M, M1); we confirmed that these were based on the holotype female. After a detailed reexamination of this species, we amend the setal position name for setae on the propodal palm. The five setae in the region between the bases of the dactylus and fixed finger of the cheliped in the holotype correspond to i) four outer simple setae at the insertion of the dactylus, and ii) one dorsoproximal simple seta on the cutting surface (Tanabe et al. 2017: p. 150). The six setae in the same region of the allotype correspond to i) five outer simple setae at the insertion of the dactylus, and ii) one dorsoproximal (sic; actually subdistal) simple seta on the propodal palm (Tanabe et al. 2017: p. 156).Published as part of Tanabe, Yuki & Kakui, Keiichi, 2019, Two Hexapleomera species from Japan, with a new species description and discussion of phylogenetic relationships within Hexapleomera (Crustacea: Tanaidacea), pp. 318-336 in Zootaxa 4648 (2) on pages 321-322, DOI: 10.11646/zootaxa.4648.2.7, http://zenodo.org/record/335490
Colaboratividad y solidaridad como regreso al mundo en la filosofía de Hajime Tanabe
No full textThis paper explores Tanabe’s thoughts on collaborativity and solidarity as a dimension of nothingness in so far as they are possible from the perspective of the non-self (empty-self or empty subject) or the continuous death of the self, which is called metanoia and, as a way of thinking, metanoetics. For Tanabe, the continuity of metanoia allows for a historical form of existence that makes possible another mode of being in the world indicated by solidarity and collaborativity, also known as “returning to the world” (gensō, in Japanese). From the absolute nothingness, as a consequence, a kind of interstice with other societies and cultures opens up.El presente texto explora en el pensamiento de Tanabe la colaboratividad y la solidaridad como una dimensión de la nada en tanto que éstas son posibles desde la perspectiva del no-ego (yo-vacío o sujeto vacío) o muerte continua del ego a lo cual llama metánoia y que como camino de pensamiento le llama metanoética. Para Tanabe la continuidad de la metánoia permite una forma de existencia histórica que hace posible otro modo de ser en el mundo, marcado por la solidaridad y la colaboratividad, también llamado “regreso al mundo” (gensō-ekō, en japonés). De este modo es desde la nada absoluta que se abre una especie de intersticio con otras sociedades y culturas
Degenerate differential equations of parabolic type and inverse problems
No full textVarious methos to solve some identification problems for degenerate differential equations in Banach spaces are indicated. Various applications and examples are given
La mediación absoluta y el camino: de la transformación religiosa en Tanabe Hajime
No full textThis essay deals with the problem of religious transformation in Tanabe Hajime. In his Philosophy as Metanoetics, Tanabe examines this transformation through the relationship between vows of the Buddhas as described in the writings of the Pure Land Buddhist thinker Shinran. For Tanabe, each vow expresses a moment of the religious transformation. Furthermore,he argues against all possibility of immediacy in human existence and sets out to demonstrate that the meaning of existence is mediated by the transformation of self-power into Other-power, wherein the drive to affirm the self is transformed into a radical return to the world in which the self becomes a medium for the salvation of others. This is where Tanabe locates the deepest power of nothingness: in negating every effort of the self to ground itself and to make human being an upāya, a skillful means to a greater end. This is possible, in turn, because being itself, in all its manifestations, is upāya
Riukiaria mundyi Korsós, Nakamura & Tanabe, 2011, sp. n.
No full textRiukiaria mundyi sp. n. Figs 4 –6, 14– 19. Holotype male (NSMT-My 379)— Japan, Southern Ryukyus, Yaeyama Group, Yonaguni-jima Island, Mt. Dunandake, primary forest, N 24.4577 ° E 122.9711 °, 146 m alt., 31 August 2009, leg. Z. Korsós & Y. Nakamura. Paratypes: 3 males, 5 females, 2 juvs. (RUMF, HNHM)—Same locality and date. 1 male, 1 female (RUMF)— Japan, Southern Ryukyus, Yaeyama Group, Yonaguni-jima Island, Adigara Cave area, near construction place, N 24.4599 ° E 122.9594 °, 44 m alt., 2 September 2009, leg. Z. Korsós & Y. Nakamura 2 females (NSMT-My 380)— Japan, Southern Ryukyus, Yaeyama Group, Yonaguni-jima Island, Arakawabana forest trail, 134 m, primary forest, N 24.4441 ° E 123.0107 °, 1 September 2009, leg. Z. Korsós & Y. Nakamura 4 males, 5 females, 3 juvs. (RUMF, HNHM)— Japan, Southern Ryukyus, Yaeyama Group, Yonaguni-jima Island, Kubura-bari, N 24 ° 27.4 ’ E 122 ° 56.6 ’, 50 m alt., rocky grassland, 14 February 2010, leg. R. & Z. Korsós Diagnosis. A member of the genus Riukiaria as defined by Shinohara (1977) and Tanabe and Shinohara (1996) with the simple, forceps-like male gonopod conformation. It differs from congeners first of all by its coloration in life (almost uniformly pinkish-orange), by its exclusive occurrence on a single island (Yonaguni-jima), and in details of gonopod morphology. FIGURES 14–16. Riukiaria mundyi sp. n. 14 = Anterior body part paratype male, dorsal view; 15 = Epiproct of paratype male, dorsal view; 16 = Sternum, coxa, and prefemur of 2 nd legpair of paratype male, posterior view. Scales 1 mm (14,15) and 0.5 mm (16). Etymology. The specific epithet is a patronym in honor of Mr. Imre Mundy (Budapest), a Hungarian engineer, long time friend and supporter of the first author (genitive, masculine). Description. Measurements: Body size generally smaller than in most other Riukiaria species. Length of males 36–42 mm, midbody paranotal width 7.5–8 mm, metatergal length 1.8–2 mm, collum width 6–6.6 mm, length 2.4–3 mm (n= 4). Female body length 36–41 mm, midbody paranotal width 7.8–8.6 mm, metatergal length 1.8–2 mm, collum width 6.3–7.1 mm, length 2.8–3.3 mm (n= 8). Kubura-bari population (see Remarks): Male body length 25–26 mm, midbody paranotal width 5.1–5.3 mm, metatergal length 1.2–1.3 mm, collum width 4.4– 4.6 mm, length 1.9–2.1 mm (n= 4). Female body length 30–31 mm, midbody paranotal width 6.3–6.8 mm, metatergal length 1.3–1.4 mm, collum width 5.2–5.5 mm, length 2.5–2.6 mm (n= 5). Color in life (Fig. 4): Whole body is almost uniformly light orange, pinkish, occasionally tending toward reddish or dark yellowish. Head, prozona, legs, and underside paler, 6 th segment of antennae, tibiae and tarsi whitish. On collum and each metatergum a slightly darker, almost brownish median patch, pronounced towards paranota as oval spots. On preserved specimens (70 % ethanol) the vivid color quickly disappears, only shadows of the abovementioned pattern remains. Coloration of males and females does not differ. Fluorescence in UV light strong (Figs 5–6), especially on prozona and underside, metazona are slightly greyish. Head smooth, epicranial suture distinct, 2 + 2 frontal setae, several setae scattered above clypeus, with 2 dense rows at its margin and on labrum. Antennae straight, first article globose, 2 nd slightly clavate, subequal with articles 3 –5, 6th longest, about 1.2 x longer than 5 th, 7 th small, slender, slightly longer than wide. Gnathochilarial stipites and lamellae linguales covered densely with short hairs, large, triangular mentum with smaller, distinct, median hair-field. Collum convex, smooth, shiny, lateral and posterior margin with weak ridge, lateral corners triangular, slightly directed caudad. Pro- and metaterga smooth without any traces of tubercles or punctuation, not even wrinkles. Posteriolateral edge of paranota 2–3 triangular, on 4 th and onwards strongly pointed caudad (Fig. 14). Pore formula normal, pores on paranota 5,7,9,10,12,13,15,16, 17, and 18, in median excavation of paranota (in lateral view). Sides between segments 6–13 perfectly parallel, segments 14–19 gradually tapering, posteriolateral projections become more pointed. Epiproct in dorsal view subtriangular (Fig. 15), in lateral view protruding over paraprocts, parallel-sided, slightly curved ventrad, with 7 + 7 setae, 3 + 3 of them sitting on knobs. Paraprocts strongly marginate with 2 + 2 setae, hypoproct with 1 + 1 setae on knobs. Midbody legs well separated (by 1.8–1.9 mm in males, 2.4–2.8 mm in females), sterna wide and smooth. Postgonopodal legs with moderately developed ventral spine on prefemur, increasingly stronger towards body end, femur about twice as long as prefemur, straight, postfemur crassate, tibia straight, both subequal in length and about 1 / 3 rd of femur, tarsus slender, about twice as long as tibia, claw (ca. 0.5 mm long) curved. Sexual characters: Male 2 nd legpair (Fig. 16) coxa with strong median projections about half as long as length of coxa, apically with membraneous tubules surrounded by strong setae, 1 + 1 macrosetae sitting at joint of prefemur (1 anteriorly, and 1 posteriorly). No other sternal or leg modification could be observed. Male gonopodal aperture on segment 7 wide, elliptical, about twice as wide as long, gonopods in situ usually deeply embedded, with acropodites crossing each other. Coxa (Figs 17–18, c) long, slender, about twice as long as wide, without apophysis but with small apophyseal macroseta (cm). Cannula normal, hidden on mesal side. Telopodite consists of two simple processes (Figs 17–18) forming a simple, forceps-like appearance typical for Riukiaria (Tanabe & Shinohara 1996), the shorter branch being the prefemoral process (pfp), growing proximally from the base of prefemur, the latter being thick and short, and densely covered with long hairs. Prefemoral process about 3 / 4 th of length of acropodite, devoid of any seta, knob, or additional process, flattened, parallel-sided, spatula-shaped, almost transparent. Acropodite (as a continuation of prefemur) long, scythe-shaped, arched proximally towards prefemoral process, with its slightly broadened to triangular, pointed tip (s) almost bending back to that. Distinction between prefemur and acropodite indefinite, hairs becoming scarcier at about 1 / 3 rd of total length, but about half length still a strong macroseta (ms) on lateral side of acropodite. Prostatic groove runs straight medially along mesal side of acropodite, and ends indistinctly on its pointed tip. Female cyphopods (Fig. 19) closely packed behind 2 nd legpair, in large, ∞-shaped aperture, valves (v) are oval, nearly as high as wide, densely setose, operculum (op) on lateral side small, less than half as high as valves, with fewer and shorter but stronger setae, receptacles (r) embracing valves both anteriorly and posteriorly, subrectangular, with several series of short hairs only along ventral margin. Distribution. R. mundyi sp. n. is restricted to Yonaguni-jima Island, the southwesternmost member of the Yaeyama Island Group, southern Ryukyus, Okinawa Prefecture, Japan. Remarks. Yonaguni-jima island, the type locality of R. mundyi sp. n., is situated about 100 km east of Taiwan, and 80 km west of Iriomote-jima, another member of the Yaeyamas. On two of this latter island group, Iriomotejima and Ishigaki-jima islands, another species, R. chelifera, occurs. It is slightly larger (body length 45 mm), and its color pattern is different: head, antennae, proterga, large part of metaterga anteriorly dark brown or grey, posterior margin, paranota, tip of epiproct, and legs yellow. This is in strong contrast with the uniformly orange-yellow color of the new species. Male gonopods also differ, acropodite and prefemoral process being straight, slender, and almost equal in length, as opposed to the longer and curved acropodite with macroseta in R. mundyi sp. n. Comparison to the possible Taiwanese species, R. cohaesiva, R. contigua, and R. uraensis (from the region of Taipei, Wulai), all inadequately described and poorly illustrated by Wang (1956, 1957), is impossible without freshly collected material. Specimens of the new species in Yonaguni-jima were mostly collected along the edge of natural, deciduous forests, mostly in moist litter under the large leaves of Alocasia odora, but also close to human-disturbed areas like abandoned construction sites, ruined cave entrances etc. Adult specimens were collected at the locality Kuburabari, too, which is actually a pasture for the native, endemic race of horse (the Yonaguni pony), and these specimens were distinctly smaller than members of the other populations. This is perhaps due to that relatively harsh environment, the wind-swept rocky grassland on the western side of the island, generally poor in organic litter. The species was mentioned and illustrated as an undescribed Riukiaria from Yonaguni-jima island by Tanabe (2005). It was included into the Red Data Book of threatened wildlife of Okinawa and, though categorized as ’data deficient’ (DD), its habitat was proposed for preservation. According to our observations, the species is not confined to any characteristic or undisturbed biotope on Yonaguni-jima Island so perhaps habitat conservation is not the best approach, but considering that the total area of the island itself is only 28.8 square kilometers, the populations of the new and unique species are indeed worthy of legal protection.Published as part of Korsós, Zoltán, Nakamura, Yasuyuki & Tanabe, Tsutomu, 2011, Two new millipede species of the genus Riukiaria (Diplopoda, Polydesmida, Xystodesmidae) endemic to the Ryukyu Archipelago, Japan, pp. 55-68 in Zootaxa 2877 on pages 62-66, DOI: 10.5281/zenodo.27756
Genetic variability in east Asian dogs using microsatellite loci analysis
No full textAn analysis of eight microsatellite loci in 213 animals was performed to define the genetic structure and variability of 11 East Asian native dog populations. Allele diversity, observed heterozygosities, expected heterozygosities, F-statistics, G(ST) estimates, number of migrants per generation (Nm), and Nei's DA distance were calculated. Expected mean heterozygosities of Asian native dogs varied within a range of 0.310-0.718 with a mean value of 0.580. In a sample of 11 Asian dogs, the highest genetic diversity was exhibited in the Korean native dogs and the lowest in the Shiba, the Japanese native dog. All populations except the Kishu and Akita showed statistically significant deviation from Hardy-Weinberg equilibrium at more than one locus. After corrections for multiple significance tests, deviations over all loci were statistically significant in 7 of 11 dog populations, meaning that Asian dogs are genetically subdivided (global F-ST = 0.154). Despite the locus-specific deviations, statistically significant departures from the Hardy-Weinberg equilibrium reflect deviations In the direction of heterozygote deficit, the global F-IS being 0.072. In the neighbor-joining and unweighted pair group method with arithmetic mean (UPGMA) dendrograms based on Nei's DA distance, the Korean native breeds (the Sapsaree and the Jindo) were grouped together, then with the Eskimo dog. The two Japanese native dogs (the Hokkaido and the Akita) also clustered together, with moderate bootstrap support. In spite of some deviation, the three-dimensional scattergram based an principal components supported the conclusions suggested by the dendrograms based on Nei's DA distance. From these two analyses, the Korean native dogs formed the closest groups and then showed a close relationship to the Eskimo dogs, reflecting the fact that the Korean native dogs might be originated from dogs in the northern part of Far East Asia
Mechanistic investigation on ethanol-to-butadiene conversion reaction over metal oxide clusters
No full textDensity functional theory (DFT) calculations were conducted to investigate mechanistic details of ethanol-to-butadiene conversion reaction over MgO or ZnO catalyst. We evaluated the Lewis acidity and basicity of MgO and ZnO and found that ZnO had the stronger Lewis acidity and basicity than MgO. Potential energy surfaces of ethanol-to-butadiene conversion, which included relevant transition states and intermediates, were computed in detail following the generally accepted mechanism reported in the literature, where such mechanism included ethanol dehydrogenation, aldol condensation, Meerwein-Pondorf-Verley reduction, and crotyl alcohol dehydration. DFT results showed that ethanol dehydrogenation was the rate-limiting step of overall reaction when the reaction was catalyzed by MgO. Also, DFT results showed that ethanol dehydrogenation occurred more easily on ZnO than on MgO, where such a result correlated with the stronger Lewis acidity of ZnO. In addition, we computed ethanol dehydration, which generates ethylene, one of the major undesired side reaction products for butadiene formation. DFT results showed that ZnO favored dehydrogenation over dehydration, while MgO favored dehydration
La temporalidad metanoética: Sobre Tanabe, Heidegger y Shinran
No full textIn Tanabe’s reading of time in the work of Heidegger and, through Shinran’s interpretation, of the seventh-century Chinese philosopher Shandao, one can see that both Heidegger’s and Zendō’s viewpoints do not go beyond the ethical standpoint of self-power. Tanabe distances himself from any view that strays from the eternal present as it is witnessed in the practice of metanoesis, in which one attempts to live the continuous practice, not as if one were dead, but by effectively being so, that is, by practicing and witnessing the breaking through of the self, which in turn is the only thing that can foster the eternal present of naturalness. This is definitively Shinran’s viewpoint
ELEVEN NEW BIVALVES FROM TANABE BAY, WAKAYAMA PREF., JAPAN
No full textDuring the biological survey of Tanabe Bay which was carried out on 8th and 9th of September, 1958, 195 species of bivalves have been collected, of which 11 species are new to science. Therefore the writer describes them herein. The type specimens of these new species are deposited in the Amakusa Marine Biological Laboratory. Before going further the writer wishes to express his sincere thanks to the members of the Seto Marine Biological Laboratory for their cooperations and Dr. T. KURODA, Dr. K. SAKURAI and Mr. Y. MATSUMOTO for their warm-hearted advices
Crystallization and preliminary X-ray analysis of the tungsten-dependent acetylene hydratase from Pelobacter acetylenicus
No full textAcetylene hydratase is a tungsten-containing hydroxylase that converts acetylene to acetaldehyde in a unique reaction that requires a strong reductant. The subsequent disproportionation of acetaldehyde yields acetate and ethanol. Crystals of the tungsten/iron-sulfur protein acetylene hydratase from Pelobacter acetylenicus starin WoAcy 1 (DSM 3246) were grown by the vapour-diffusion method in an N-2/H-2 atmosphere using polyethylene glycol as precipitant. Growth of crystals suitable for X-ray analysis strictly depended on the presence of Ti-III citrate or dithionite as reducing agents
- …
