235 research outputs found
Polyrhachis doudou Rigato, 2016, n. sp.
No full textPolyrhachis doudou n. sp. (Figures 2 a–c) Diagnosis. A moderately large species in the militaris -group, with somewhat rectangular head, appendages without standing hairs, and moderately abundant short greyish pubescence. Holotype worker. HL 2.14, HW 1.60, CI 75, SL 2.93, SI 183, FW 0.55, FI 34, PW 1.43, WL 3.03, HTL 2.93. Clypeus faintly carinate medially, anterior clypeal margin evenly convex. Head in full face view subrectangular with weakly convex sides, broadly rounded posterior corners and slightly medially protruding occiput. Eyes moderately convex, placed relatively posteriorly; behind each eye a very blunt margination separates the head dorsum from the side. Scapes long and thin. Mesosoma moderately stout, in profile forming a broad curvature interrupted at the sutures, of which the metanotal one is the most impressed; all mesosoma segments look flat transversely. Mesonotum twice as wide as long, propodeal dorsum as wide as long. In profile, propodeal dorsum and declivity similar in length. Pronotal spines long, moderately anteriorly divergent and thin. Mesosoma distinctly marginate along its sides, the marginations mostly forming narrow flanges interrupted at the sutures. Propodeal dorsum and declivity separated by a sudden change of sculpturation. Propodeal teeth small and upturned. Petiole bearing a mid pair of long, erect, well separated and moderately divergent spines, and a lateral pair of small sharp teeth, close to the base of the spines. In frontal view petiole flat between the spines. First gastral tergite anteriorly shallowly concave. Mandibles finely longitudinally striolate and with sparse, small piligerous pits. Clypeus finely reticulatepunctate with sparse rough puncturation giving a scabrous appearance, especially laterally. Most of head dorsum and mesosoma, including the sides, finely and almost regularly longitudinally rugulose, with a finely reticulatepunctate ground sculpture. Propodeal declivity finely reticulate-imbricate. Petiole, gaster and appendages finely reticulate-punctate. The whole body looks dull and with a cinder-like reflection. Standing, yellowish/whitish hairs moderately abundant and long on the occiput, dorsum of mesosoma and gaster; shorter and more scattered hairs on frons and clypeus. Head sides in front of the eyes, ventral head surface, petiole and appendages without standing hairs, the whole body and appendages covered with relatively dense, but short, whitish pubescence; longer on mesosomal sides and petiole; denser and shorter on gaster and, especially, appendages. Colour black throughout, including mandibles, funiculi and tarsi. Paratype workers (n=2). HL 2.21–2.29, HW 1.63–1.70, CI 74, SL 2.93–2.97, SI 172–182, FW 0.55–0.56, FI 33–34, PW 1.40–1.52, WL 3.00–3.17, HTL 2.98–3.07. Not significantly different from the holotype. Holotype worker. GABON: Prov. Ogoové-Maritime, Réserve des Monts Doudou, 25.2 km 304° NW Doussala, 2°13.63’S 10°23.67’E, 600 m, 15.iii.2000 (S. van Noort), sweep, coastal lowland rainforest, undergrowth, low canopy in forest (CAS: GA00 S104-1). Paratypes. same data as the holotype (1 w, CAS: GA00 S103-1); GABON: Prov. Ogoové-Maritime, Réserve des Monts Doudou, 24.3 km 307° NW Doussala, 2°13.35’S 10°24.35’E, 370 m, 10.iii.2000 (S. van Noort), sweep, coastal lowland rainforest, undergrowth, low canopy in forest (1 w, CAS: GA00 S83-9). Comment. Polyrhachis doudou shares with militaris the subrectangular head outline in full face view. In addition, P. doudou recalls the less brightly coloured militaris specimens coated with short pubescence, and main differences between doudou and militaris are summarized in the key. Because of its size and colour P. doudou looks similar to schistacea, but the latter has hairy appendages, rounded head and, usually, a lower SI.Published as part of Rigato, Fabrizio, 2016, The ant genus Polyrhachis F. Smith in sub-Saharan Africa, with descriptions of ten new species. (Hymenoptera: Formicidae) in Zootaxa 4088 (1) on pages 14-16, DOI: 10.11646/zootaxa.4088.1.1, http://zenodo.org/record/26185
Sleep in your personalized sonic dreamscape: A profile-based modular music system for personalized sleep experiences in general wards
No full textHospitalized patients were found to sleep significantly worse in the hospital than at home. The lack of quality sleep can cause serious health problems and affect patients’ health recovery. Music as a low-cost sleep aid is a promising way to improve patients’ sleep. However, most available sleep music playlists are limited to generic, soothing songs. People’s personal preferences in relation to the effects of music are not well-considered and under-researched. Therefore, this project aims to explore how to design and deliver music that fits with patients’ sleep and music preferences with a profile-based personalization approach.Literature research was first carried out to understand sleep knowledge, how and why music aid sleep, practices in music therapy and profile-based personalization. Through generative research, people’s preference data was collected and lead to four sleep music profiles: explorer, diver, hunter, observer. A design direction was proposed based on insights from the research activities. In the design phase, two brainstorming sessions were carried out and resulted in a feasible system concept. After two iterations, the final design DREAMe was proposed. DREAMe is personalized music modular system, including profile generation and music delivery. The profile generation logic allows the system to predict which profile users are based on a list of questions. Each profile comes with a sleep music module. To evaluate the music effects, sleep music samples were made under a summarized music design guideline. The music melodies of users’ favourite music come from instrumental covers of the songs participants provided. The resources downloaded online were used fairly and only for this evaluation purpose.In project evaluation, results suggest that the product and profile experience are logical, intuitive, and easy to use. The four profiles can reflect people’s preferences, but they may not be stable. An eight-day evaluation was conducted to test the music effects on sleep. DREAMe music was found to reduce sleep onset latency and improve sleep quality. People could fall asleep more easily and feel more relaxed after two days’ music listening. The music design delivers a relaxing, enjoyable and immersive music experience.Design for Interactio
Rythme d’activité journalière de Glossina fuscipes fuscipes, vecteur majeur de la trypanosomiase humaine africaine dans le parc national de Moukalaba Doudou (Sud-Ouest Gabon)
Get PDFLa présence des glossines et l’activité journalière de Glossina fuscipes fuscipes dans le parc national de Moukalaba-Doudou ont été évaluées à l’aide du piège Vavoua durant douze jours pendant la grande saison sèche dans trois habitats différents à raison de quatre jours par habitats : savane, forêt et milieu anthropisé. Dans chaque milieu, un dispositif de trois pièges a été utilisé. 697 glossines au total ont été capturées soit 59,26% en forêt, 34,14% en milieu anthropisé et 6,60% en savane. Les glossines capturées ont été identifiées comme appartenant aux taxons suivant : Glossina fuscipes fuscipes Newstead 1911, G. palpalis palpalis Robineau-Desvoidy 1830, G. frezili Gouteux 1987, G. tachinoides Westwood1850, G. nashi Potts1955. Le rythme circadien d’activité de Glossina fuscipes fuscipes montre de façon générale que cette espèce a un rythme de type unimodal avec un maximum de capture marquée en milieu de journée. Selon les différents habitats, les pics d’activités journalières de cette espèce varie. Il est unimodal en forêt et savane, et bimodal en milieu anthropisé. Suivant le sexe, l’activité journalière de Glossina fuscipes fuscipes dans les trois biotopes est très hétérogène. Chez les mâles, le rythme circadien d’activité est bimodal en milieu anthropisé et unimodal en savane et en forêt, alors que chez les femelles ce cycle est unimodal dans les trois milieux.Mots clés : Vavoua, glossines, activités journalières, Doussala, Moukalaba Doudou, Gabo
Enicospilus bebelus GAULD & MITCHELL 1978
No full textEnicospilus bebelus GAULD & MITCHELL, 1978 Enicospilus bebelus GAULD & MITCHELL, 1978: ROUSSE & VAN NOORT 2014: 68 (Réserve des Monts Doudou), 70 (taxonomy). D i s t r i b u t i o n: Ogooué-Maritime: Réserve des Monts Doudou. Enicospilus bebelus is recorded from the Central African Republic, Democratic Republic of Congo, Gabon, Ivory Coast, Nigeria, Sierra Leone and Uganda.Published as part of Madl, Michael & O, Tersilochinae., 2020, A catalogue of the Ichneumonidae (Hymenoptera, Ichneumonoidea) of Gabon, pp. 377-407 in Linzer biologische Beiträge 52 (1) on page 396, DOI: 10.5281/zenodo.527526
Aethioplitops fulvator
No full textAethioplitops fulvator (MORLEY, 1919) Aethioplitops fulvator (MORLEY, 1919): VAN NOORT 2004: 193 (table 2: Réserve des Monts Doudou (25.2 km NW Doussala)). D i s t r i b u t i o n: Ogoueé-Maritime: Réserve des Monts Doudou (25.2 km NW Doussala). Aethioplitops fulvator is also recorded from Angola, Kenya, Republic of Guinea and Uganda.Published as part of Madl, Michael & O, Tersilochinae., 2020, A catalogue of the Ichneumonidae (Hymenoptera, Ichneumonoidea) of Gabon, pp. 377-407 in Linzer biologische Beiträge 52 (1) on page 391, DOI: 10.5281/zenodo.527526
Enicospilus expeditus
No full textEnicospilus expeditus (TOSQUINET, 1896) Enicospilus expeditus (Tosquinet, 1896): VAN NOORT 2004: 194 (table 2: Réserve des Monts Doudou (25.2 km NW Doussala)). D i s t r i b u t i o n: Ogooué-Maritime: Réserve des Monts Doudou (25.2 km NW Doussala). Enicospilus expeditus is known from the Afrotropical (Democratic Republic of Congo, Gabon, Togo, Uganda, Madagascar) and Palaearctic (Yemen) regions.Published as part of Madl, Michael & O, Tersilochinae., 2020, A catalogue of the Ichneumonidae (Hymenoptera, Ichneumonoidea) of Gabon, pp. 377-407 in Linzer biologische Beiträge 52 (1) on page 397, DOI: 10.5281/zenodo.527526
Nanocrystalline Cellulose – Attapulgite/ Sepiolite as water-based drilling fluids and their impacts on the oil drilling penetration rate
No full textA research report submitted to the Faculty of Engineering and the Built Environment, University of the Witwatersrand, in partial fulfillment of the requirements for the degree of MScProduction of oil and gas from deep well that operate under high pressure and high temperature (HPHT) conditions require the use of smart or advanced drilling fluid with improved rheological and filtration properties that are cheaper, eco-environmentally friendly, biodegradable and applicable for reducing the drilling cost. Due to the limitation of the use of Bentonite (BT) in harsh conditions of HPHT, Attapulgite (ATT) and Sepiolite (SEP) are used through unconventional hydrocarbon resources, such as shale gas, shale oil, deep water, and artic reservoirs. Nanotechnology demonstrated promising solutions to address such issues in the oil and gas industry. As many researchers investigated the improvement of the drilling fluids through the application of nanotechnology, success brought hope. In this study, the effect of the incorporation of cellulose nanocrystals (CNCs) at different concentrations into ATT and SEP water-based drilling fluids (ATT/SEP-WDFs) and the variation of temperature were investigated to evaluate the improvement on the rheological and filtration properties of cellulose nanocrystals into attapulgite water-based drilling fluids (CNC/ATT-WDFs) and cellulose nanocrystals into sepiolite water-based drilling fluids (CNC/SEP-WDFs) in fresh-water (FW) and sea-water (SW). Herschel-Bulkley's (HB) rheological model was applied to analyze quantitatively the fluid properties. Results showed that the incorporation of CNC at various concentrations into ATT/SEP-WDFs in freshwater and seawater improves the rheological and fluid loss properties and fluid thermal stability. When incorporating CNCs at lower concentrations into ATT/SEP-WDFs in freshwater and seawater, results showed improved carrying capacity of the cuttings, wellbore stability, fast penetration rate, high yield stress during the aging period, low viscosity at a high shear rate, and excellent shear-thinning behaviorsCK202
Pseudotogea albidora HEINRICH 1968
No full textPseudotogea albidora HEINRICH, 1968 Pseudotogea albidora HEINRICH, 1968: VAN NOORT 2004: 193 (table 2: Réserve des Monts Doudou (24.3 km NW Doussala)). D i s t r i b u t i o n: Ogoueé-Maritime: Réserve des Monts Doudou (24.3 km NW Doussala). Gibbosoplites guineensis is recorded from Angola and Gabon.Published as part of Madl, Michael & O, Tersilochinae., 2020, A catalogue of the Ichneumonidae (Hymenoptera, Ichneumonoidea) of Gabon, pp. 377-407 in Linzer biologische Beiträge 52 (1) on page 394, DOI: 10.5281/zenodo.527526
Nylanderia brevisetula LaPolla and Fisher, sp. nov.
No full textNylanderia brevisetula LaPolla and Fisher, sp. nov. (Figs. 7 –9, 75 [worker]) Holotype worker, GABON: Ogooue-Maritime: Aire d'Exploit. Rationnelle de Faune des Monts Doudou, 24.3 km 307 ° NW Doussala, 02° 13 ' 35 "S 010° 24 ' 35 " E, elev. 375 m, 6.iii. 2000 (B.L. Fisher) (CASC) (CASENT0179575); 6 paratype workers, same label data as holotype (CASC, USNM) Worker diagnosis: Head and mesosoma brown to reddish brown, with darker brown gaster; suberect setae on pronotum and mesonotum distinctly short. Compare with: N. mendica WORKER. Measurements (n = 6): TL: 2.40–2.80; HW: 0.50–0.70; HL: 0.67–0.71; EL: 0.14–0.18; SL: 0.80– 0.90; PW: 0.39–0.45; WL: 0.85–0.92; GL: 0.88–1.16 Indices: CI: 85–92; REL: 19–26; SI: 137–142 Head and mesosoma brown to reddish brown, with gaster dark brown, yellowish around acidopore; mandibles, antennae, trochanters, joints of legs and tarsi yellowish. Head rugulose; pronotum smooth and shining, with a few specimens faintly rugulose; gaster faintly striated; mesonotum, mesopleuron, and propodeum faintly rugulose in places. Posterior margin of head broadly rounded, with distinctly rounded posterolateral corners; medially posterior margin slightly emarginate. Scapes surpass posterior margin by about the length of the first 3–4 funicular segments; scapes with erect macrosetae (SMC ≥ 25) and an abundant layer of decumbent pubescence. Pronotum and mesonotum with scattered, distinctly short, erect to suberect macrosetae (PMC = 2–3; MMC = 2–4); pronotum gently rounded toward mesonotum; mesonotum distinctly rugulose; metanotal area elongate and rugulose; dorsal face of propodeum rounded, although lower than mesonotum; dorsal face shorter than declivitous face. Dorsally gastral segments with short, erect to appressed macrosetae, with macrosetae becoming slightly longer posteriorly; gaster with a layer of pubescence and appressed macrosetae. The queen and male castes are currently unknown for this species. Etymology. The species epithet brevisetula is a combination of brevi (L. = short) and seta (L. = bristle) with a Latin diminutive ending (ula), referring to the unusually short dorsal macrosetae of the workers. Non-type material examined. CAMEROON: Mbalmayo, 3 ° 30.932 ' N, 11 ° 30.051 ' E *, Nov 1993 (N. Stork); GABON: Prov. Ogooue-Maritime Res Monts Doudou, 24.3 km, 307 ° NW Doussala, 2 ° 23.4 ' S, 10 ° 24.4 ' E, 375 m, 6 March 2000 (B.L. Fisher); Prov. Ogooue-Maritime Res Monts Doudou, 24.5 km, 307 °NW Doussala, 2 °14.0' S, 10 ° 23.9 ' E, 630 m, 18 March 2000 (B.L. Fisher); Prov. Ogooue-Maritime Res des Monts Doudou, 25.2 km, 304 ° NW Doussala, 2 ° 13.6 ' S, 10 °23,7' E, 640 m, 19 March 2000 (B.L. Fisher); IVORY COAST: Tai Forest, 5 ° 19.343 ' N, 6 ° 33.314 ' W *, 15 Aug 1975 (T. Diomande); Sassandra, 4 ° 57.133 ' N, 6 ° 5.100 ' W *, 16 March 1977 (I. Lobi) Notes. This is an unusual Nylanderia species with macrosetae on the pronotum and mesonotum both short and suberect. It may be confused with N. mendica, because N. brevisetula has a rugulose head similar to that of N. mendica and the macrosetae on the pronotum and mesonotum of N. mendica are also fairly short, though not as short as in N. brevisetula. N. mendica also has distinct striations both dorsally and ventrally on the gaster, whereas N. brevisetula only occasionally has faint striations dorsally on its gaster. Finally, N. mendica has a pronotum with lateral striations whereas N. brevisetula has a smooth pronotum laterally. We suspect based on the rugulose cuticles (generally an unusual condition in Nylanderia), similarly shaped heads, and the short macrosetae observed in both N. brevisetula and N. mendica that these two species are closely related.Published as part of Lapolla, John S., Hawkes, Peter G. & Fisher, Brian L., 2011, Monograph of Nylanderia (Hymenoptera: Formicidae) of the World, Part I: Nylanderia in the Afrotropics, pp. 10-36 in Zootaxa 3110 on page 15, DOI: 10.5281/zenodo.27929
Exploring profiling and personalisation in sleep music design: Towards conceptualising musical sleep aids for hospital use
No full textMusic as a low-cost sleep aid is a promising way to improve the sleep quality of people. However, most available sleep music playlists are limited to generic, soothing songs, which do not take in account personalisation. In collaboration with the Neurology Department of the Reinier de Graaf hospital (Delft, The Netherlands), we explored a profile-based personalisation approach to deliver music that fits with people' sleep and music preferences. Through generative research, we collected people's preference data and proposed four, evocative sleep music profiles: The Explorer, the Diver, the Hunter, and the Observer. The results of the profiling evaluation suggest that the profile experience is credible, intuitive, and easy to use. Four profiles can reflect people's preferences, but may not be stable. Design Aesthetic
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