3,861 research outputs found
Revision of Ishigakia Uchida (Hymenoptera: Ichneumonidae: Acaenitinae) from Japan, with a new species having a close relative in South Africa
No full textIto, Masato, Maeto, Kaoru (2016): Revision of Ishigakia Uchida (Hymenoptera: Ichneumonidae: Acaenitinae) from Japan, with a new species having a close relative in South Africa. Zootaxa 4136 (1): 174-180, DOI: 10.11646/zootaxa.4136.1.
Revision of the genus Jezarotes Uchida (Hymenoptera: Ichneumonidae: Acaenitinae), with the description of a new species from Laos
No full textIto, Masato, Maeto, Kaoru (2015): Revision of the genus Jezarotes Uchida (Hymenoptera: Ichneumonidae: Acaenitinae), with the description of a new species from Laos. Zootaxa 3946 (3): 416-426, DOI: 10.11646/zootaxa.3946.3.
Revision of the genus Arotes Gravenhorst (Hymenoptera: Ichneumonidae: Acaenitinae) from Japan
No full textIto, Masato, Watanabe, Kyohei, Maeto, Kaoru (2014): Revision of the genus Arotes Gravenhorst (Hymenoptera: Ichneumonidae: Acaenitinae) from Japan. Zootaxa 3893 (2): 196-208, DOI: 10.11646/zootaxa.3893.2.
FIGURES 22–25. J in Revision of the genus Jezarotes Uchida (Hymenoptera: Ichneumonidae: Acaenitinae), with the description of a new species from Laos
No full textFIGURES 22–25. J. mitai sp. nov., female (holotype). 22, head, frontal view; 23, hind leg, lateral view; 24, mesosoma, lateral view; 25, basal part of metasoma, lateral view.Published as part of Ito, Masato & Maeto, Kaoru, 2015, Revision of the genus Jezarotes Uchida (Hymenoptera: Ichneumonidae: Acaenitinae), with the description of a new species from Laos, pp. 416-426 in Zootaxa 3946 (3) on page 423, DOI: 10.11646/zootaxa.3946.3.8, http://zenodo.org/record/24330
Toyo Ito and masato Araya's Experiments in the Structural Use of Aluminium
No full textAluminum is a widely used material offering many advantages when used in buildings. Supply has dramatically increased with better recycling practices. With this in mind during the 1990s, Japanese subsidies targeted exploratory development of new uses for aluminum in buildings. This paper reviews innovative aluminum developments by Japanese architect Toyo ITO and structural engineer Masato ARAYA. With strong industry support, the two professionals designed and built five free-standing aluminum structures: a house, a dormitory, a cottage, an exhibition kiosk and a pavilion. Teaming up with several different industry partners both at home and abroad, Ito and Araya explored a variety of formal approaches. Their work received numerous awards and accolades and was in some cases patented. However, in the end the structures the two professionals built remain unique
FIGURES 17–18. A in Revision of the genus Arotes Gravenhorst (Hymenoptera: Ichneumonidae: Acaenitinae) from Japan
No full textFIGURES 17–18. A. japonicus sp. nov., female (holotype). 17, lateral view; 18, dorsal view.Published as part of Ito, Masato, Watanabe, Kyohei & Maeto, Kaoru, 2014, Revision of the genus Arotes Gravenhorst (Hymenoptera: Ichneumonidae: Acaenitinae) from Japan, pp. 196-208 in Zootaxa 3893 (2) on page 204, DOI: 10.11646/zootaxa.3893.2.2, http://zenodo.org/record/22584
FIGURES 9–16. J in Revision of the genus Jezarotes Uchida (Hymenoptera: Ichneumonidae: Acaenitinae), with the description of a new species from Laos
No full textFIGURES 9–16. J. tamanukii (Uchida), females from Kanagawa Pref. (9, 10) and Osaka Pref. (11, 12), and a male from Nara Pref. (13–16). 9, head, frontal view; 10, propodeum and basal part of metasoma, lateral view; 11, right fore wing; 12, right hind wing; 13, genital capsule, ventral view, 14, genital capsule, dorsal view; 15, aedeagus, lateral view; 16, subgenital plate, ventral view.Published as part of Ito, Masato & Maeto, Kaoru, 2015, Revision of the genus Jezarotes Uchida (Hymenoptera: Ichneumonidae: Acaenitinae), with the description of a new species from Laos, pp. 416-426 in Zootaxa 3946 (3) on page 421, DOI: 10.11646/zootaxa.3946.3.8, http://zenodo.org/record/24330
FIGURE 19–21. A. moiwanus. 19 in Revision of the genus Arotes Gravenhorst (Hymenoptera: Ichneumonidae: Acaenitinae) from Japan
No full textFIGURE 19–21. A. moiwanus. 19, antennal flagellum, dorsal view, female (color form B, Hokkaido); 20, antennal flagellum, dorsal view, female (color form A, Fukui Pref.); 21, head, dorsal view, male (Ehime Pref.).Published as part of Ito, Masato, Watanabe, Kyohei & Maeto, Kaoru, 2014, Revision of the genus Arotes Gravenhorst (Hymenoptera: Ichneumonidae: Acaenitinae) from Japan, pp. 196-208 in Zootaxa 3893 (2) on page 205, DOI: 10.11646/zootaxa.3893.2.2, http://zenodo.org/record/22584
FIGURES 10–12. Wings. 10, A in Revision of the genus Arotes Gravenhorst (Hymenoptera: Ichneumonidae: Acaenitinae) from Japan
No full textFIGURES 10–12. Wings. 10, A. japonicus sp. nov., female (paratype, Kumamoto Pref.); 11, A. moiwanus, female (Yamanashi Pref.); 12, A. sugiharai, female (Yamanashi Pref.).Published as part of Ito, Masato, Watanabe, Kyohei & Maeto, Kaoru, 2014, Revision of the genus Arotes Gravenhorst (Hymenoptera: Ichneumonidae: Acaenitinae) from Japan, pp. 196-208 in Zootaxa 3893 (2) on page 202, DOI: 10.11646/zootaxa.3893.2.2, http://zenodo.org/record/22584
Transient outward K+ current (ITO) reduction prolongs action potentials and promotes afterdepolarisations: a dynamic-clamp study in human and rabbit cardiac atrial myocytes
No full textBackground and aim: Human atrial transient outward K+ current (ITO) is decreased in a variety of cardiac pathologies, but how ITO reduction alters action potentials (AP) and arrhythmia mechanisms is poorly understood, owing to non-selectivity of ITO blockers.<p></p>
Aim: to investigate effects of selective ITO changes on AP shape and duration (APD), and on afterdepolarisations or abnormal automaticity with beta-adrenergic-stimulation, using the dynamic-clamp technique in atrial cells.<p></p>
Methods and Results: Human and rabbit atrial cells were isolated by enzymatic dissociation, and electrical activity recorded by whole-cell-patch clamp (35-37oC). Dynamic-clamp-simulated ITO reduction or block slowed AP phase 1 and elevated the plateau, significantly prolonging APD, in both species. In human atrial cells, ITO block (100% ITO subtraction) increased APD50 by 31%, APD90 by 17%, and APD-61mV (reflecting cellular effective refractory period) by 22% (P<0.05 for each). Interrupting ITO block at various time points during repolarisation revealed that the APD90 increase resulted mainly from plateau-elevation, rather than from phase 1-slowing or any residual ITO. In rabbit atrial cells, partial ITO block (~40% ITO subtraction) reversibly increased the incidence of cellular arrhythmic depolarisations (CADs; afterdepolarisations and/or abnormal automaticity) in the presence of the beta-agonist isoproterenol (0.1 μM; ISO), from 0% to 64% (P<0.05). ISO-induced CADs were significantly suppressed by dynamic-clamp increase in ITO (~40% ITO addition). ISO+ITO decrease-induced CADs were abolished by beta1-antagonism with atenolol at therapeutic concentration (1 μM).<p></p>
Conclusion. Atrial cell action potential changes from selective ITO modulation, shown for the first time using dynamic-clamp, have the potential to influence reentrant and non-reentrant arrhythmia mechanisms, with implications for both the development and treatment of atrial fibrillation
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