203,021 research outputs found
Using EBSD and TEM-Kikuchi patterns to study local crystallography at the domain boundaries of lead zirconate titanate
No full textReliable EBSD mapping of 90° domains in a tetragonal ferroelectric perovskite has been achieved for the first time, together with reliable automated orientation determination from TEM-Kikuchi patterns. This has been used to determine misorientation angles at 90° domain boundaries and thus local <i>c</i>/<i>a</i> ratios. The sources of orientation noise/error and their effects on the misorientation angle data have been thoroughly analyzed and it is found that this gives a cosine distribution of misorientation angles about the mean with a characteristic width related to the width of the orientation noise distribution. In most cases, a good agreement is found between local <i>c</i>/<i>a</i> ratios and global measurements by X-ray diffraction, but some clear discrepancies have also been found suggesting that real local variations are present, perhaps as a consequence of compositional inhomogeneities
The Kikuchi-Fujimoto Disease in Nigeria: A Case Report and Literature Review
No full textThe Kikuchi-Fujimoto is a rare, self-limiting disease, which is characterized by regional lymphadenopathy. It occurs worldwide with a higher prevalence among Asians and women below the age of forty years. We present 41-year-old Nigerian woman who was investigated extensively for unilateral left cervical lymphadenopathy. She was eventually diagnosed as having the Kikuchi-Fujimoto disease and was managed conservatively thereafter. We describe a case report and review of literature for better awareness of the disease amongst medical practitioners and pathologists in Africa
Meningodora longisulca Kikuchi 1985
No full textMeningodora longisulca Kikuchi, 1985 (Figs. 19 A–C, 20) Meningodora longisulca Kikuchi, 1985, 191, Figs. 1–3.— Kikuchi 1991: 27, fig. 2. Material examined: 1 OF, Fernando de Noronha, Abracos 2 ST#39/ Leg. 2, Midwater Tow, 800 m, 04° 52,43’ S / 034° 3,51’ W; 04° 50,86’ S / 034° 5,11’ W, 24 April 2017, MOUFPE: 18.451. 1 F, Fernando de Noronha, Abracos 2 ST#44A/ Leg. 2, Midwater Tow, 850 m, 03° 52,21’ S / 032° 17,54 ‘ W; 03° 52,28’ S / 032° 16,45’ W, 28 April 2017, MOUPE: 18.452. 1 M and 1 F, Fernando de Noronha, Abracos 2 ST#44B/ Leg. 2, Midwater Tow, 130 m, 03° 53,32’ S / 032° 17,99’ W, 24 April 2017, MOUFPE: 18.453. 1 M, Fernando de Noronha, Abracos 2 ST#48A/ Leg. 2, Midwater Tow, 550 m, 04° 25,02’ S / 032° 57,85’ W; 04° 25,45’ S / 032° 56,89’ W, 30 April 2017, MOUFPE: 18.450. Diagnosis: Integument thin and fragile. Rostrum triangular, slightly concave and not reaching beyond the second segment of antennular penduncle. Carapace dorsally carinate. Eyes slightly narrower than eyestalks; ocular tubercle present on inner side of stalks; tip of the eye reaches to first segment of antennular peduncle. Branchiostegal spine minute, not supported by any carina, but showing a blunt ridge. Abdomen carinate on somites 4–6. Third abdominal somite with a very faint dorsal carina; median posterior tooth present on fourth, fifth and sixth somites. Telson longer than sixth somite, deeply sulcate dorsally (Modified from Kikuchi 1985). Distribution: Atlantic Ocean: Brazil (Fernando de Noronha Archipelago). Pacific Ocean: Philliphines Sea and off Japan (Kikuchi 1985; 1991) (Fig. 20). Bathymetric distribution: 0–2394 m depth (Kikuchi 1985; 1991), herein this species was found in Brazilian waters in depths between 130– 850 m. Remarks: The specimen analyzed herein agrees with the descriptions of Kikuchi (1985) based on specimens collected in Pacific Ocean. According to Kikuchi (1985), the closest species of M. longisulca is M. mollis Smith, 1882, however, these species differ from each other in the following way (character of M. mollis in parentheses): cornea of the eyes narrower than the eyestalks (Fig. 19B) (eyes much narrower than eyestalks); presence of blunt ridge which supports the branchiostegal spine (Fig. 19A) (vs. branchiostegal spine supported by a short sharp ridge or carina); presence of dorsal carina on the third abdominal somite (Fig. 19C) (vs. dorsal carina on the third abdominal somite absent). Meningodora longisulca was previously reported only from Pacific Ocean by Kikuchi (1985; 1991) (Fig. 20), being recorded in few areas along the Philippines Sea and off Japan. In this paper, we report its first occurrence in Atlantic Ocean (Brazil), with the third observation of this rare species in all world.Published as part of Alves-Júnior, Flavio De Almeida, Silva, Elinai Dos Santos, Araújo, Marina De Sá Leitão Câmara De, Cardoso, Irene, Bertrand, Arnaud & Souza-Filho, Jesser F., 2019, Taxonomy of deep-sea shrimps of the Superfamily Oplophoroidea Dana 1852 (Decapoda: Caridea) from Southwestern Atlantic, pp. 401-442 in Zootaxa 4613 (3) on page 418, DOI: 10.11646/zootaxa.4613.3.1, http://zenodo.org/record/323976
Méthode approchée rapide pour orienter un cristal à partir d'un diagramme de Kikuchi
No full textA simplified stereographic projection from a Kikuchi pattern is used to determine the orientation of a crystal.
A good approximation is obtained by this swift method which eliminates any calculations.Une projection stéréographique simplifiée obtenue à partir d'un diagramme de Kikuchi est utilisée pour déterminer l'orientation d'un cristal.
Une bonne approximation est obtenue par cette méthode rapide qui évite tout calcul.Régis M., Régis R. Méthode approchée rapide pour orienter un cristal à partir d'un diagramme de Kikuchi. In: Bulletin de la Société française de Minéralogie et de Cristallographie, volume 90, 3, 1967. pp. 316-319
Enfermedad de Kikuchi-Fujimoto: presentación de un caso pediátrico
No full textLa enfermedad de Kikuchi-Fujimoto, o linfadenitis necrosante histiocítica, es una afección benigna, poco frecuente, generalmente de resolución espontánea, en un periodo de seis meses. La presentación
clínica característica incluye linfadenopatía cervical, leucopenia y síndrome febril prolongado. Se presenta con mayor frecuencia en mujeres asiáticas jóvenes y existen pocas descripciones de esta
enfermedad en la población pediátrica.
Frecuentemente simula linfadenitis tuberculosa, linfoma maligno, lupus eritematoso sistémico y muchas otras condiciones benignas y malignas. La etiología es desconocida; sin embargo, se ha sugerido un origen viral o autoinmunitario. Los hallazgos de laboratorio generalmente son inespecíficos, siendo los más frecuentes la leucopenia, el aumento de la sedimentación globular, la anemia y la presencia de anticuerpos antinucleares.
En vista de lo inespecífico de las manifestaciones clínicas y de laboratorio, el hallazgo histológico es lo que permite definir el diagnóstico. El diagnóstico temprano es importante, entre otras razones para evitar el uso inapropiado de antibióticos.
Se describe el caso de una paciente de 10 años, con síndrome febril prolongado y adenopatías cervicales secundarias a enfermedad de Kikuchi-Fujimoto
Greater than 90nm continuously wavelength-tunable fibre Bragg gratings
No full textWe report silica-based fibre Bragg grating filters with wavelength tuning-spans well over 90nm using a simple set-and-forget beam bending tuning-package. The key operational parameters of the filters are maintained over the entire tuning-window
Kikuchi-Fujimoto disease from eastern India
No full textKikuchi′s disease, a rare disorder which usually presents with fever painful lymphadenopathy, rash and arthritis, all of which are close mimickers of infective and immunological disorders. It is essentially a histopathological diagnosis and tests to rule out other connective tissue disorders or infective etiology must be undertaken. We present a series of two cases of kikuchi-fujimoto′s disease presenting primarily with lymphadenopathy and fever in all cases. The first is a case of generalized lymphadenopathy and the second case of kikuchi′s disease with SLE, a rare association. Lymph node excision biopsy and histopathology documented Kikuchi Fujimoto disease in above cases. All the cases improved on follow up and had no residual stigmata
Neotrombicula (Neotrombicula) nogamii Takahasi, Takano, Misumi and Kikuchi 2008
No full textNeotrombicula (Neotrombicula) nogamii Takahasi, Takano, Misumi and Kikuchi, 2008: PALPublished as part of Nielsen, David H., Robbins, Richard G. & Rueda, Leopoldo M., 2021, Annotated world checklist of the Trombiculidae and Leeuwenhoekiidae (1758 - 2021) (Acari: Trombiculoidea), with notes on nomenclature, taxonomy, and distribution, pp. 1-243 in Zootaxa 4967 (1) on page 168, DOI: 10.11646/zootaxa.4967.1.1, http://zenodo.org/record/474551
Linycus kyoheii Kikuchi & Konishi 2021, sp. nov.
No full textLinycus kyoheii sp. nov. (Figs 1-D, 3-A–G, 4-B) Holotype, ♀, JAPAN: Biwakubo-sawa, Masutomi, Hokuto City, Yamanashi Pref, 28. VII. 2007, Kyôhei Watanabe (KPMNH [KPM-NK 55268]). Data on the label: “, // (JAPAN) Yamanashi Pref. // Hokuto-shi, Masutomi, Biwakubo-sawa // 2007 July 28 // Kyohei Watanabe leg.” Female (HT). Body length 8.5 mm. Coloration. Body ground color black and covered with short white setae; setae on head and mesoscutum brown. Scutellum with single white spot. Flagellum with white semiannulus on flagellomeres 6–10. Metasomal T 5– T 7 with apical white markings. Head. Vertex and dorsal part of gena granulated and punctate; supra-clypeal area finely granulated with dense punctures and reticulate rugose; clypeus granulated and densely punctate (Figs 3-A–C). Occipital carina meeting hypostomal carina above base of mandible by 0.2 × MBW. HW/HL = 2.1; OW/HW = 0.6; OOL/POL = 0.8. SCW/ SCH = 1.8; CLW/CLH = 1.9. MBL /BMW = 2.1; MSL/BMW = 0.9. MP 5/BMW = 1.4. Antenna. Flagellum about as long as body length, with 35 flagellomeres; apical flagellomere conical; FL1 3.8 × as long as apical width and 1.3 × as long as FL2. Mesosoma. Pronotum punctate; mesoscutum dull, densely punctate; dorsal and posterior surface of scutellum punctate; postscutellum polished, with sparse longitudinal rugae; mesopleuron and metapleuron densely punctate; surface of propodeum strongly punctate, except areola and petiolar area roughly rugose (Fig. 3-C, D). Dorsal surface of scutellum moderately convex (Fig. 3-G). Lateral carina of scutellum reaching posterior end (Fig. 3-C). Costula very weak (Fig. 3-C). MSSL / MSSW = 1.0; ARL/ARW = 1.0; ARW/PSD = 0.3; PSI = 1.5. Legs. Surface of legs coriaceous, except coxae finely punctate. Hind tibia 0.4 × as long as fore wing. Wings (Fig. 4-B). Fore wing 7.6 mm long; areolet quadrangular, 1.2 × as long as 3rs-m, 0.4 × as high as 2m-cu; 1/M:2/M = 1.0:0.9. Cu-a opposite Rs&M; ramulus very slightly developed. Hind wing with cu-a 0.2 × as long as first abscissa of Cu1; three basal hamuli, 7 distal hamuli on R 1 vein. Metasoma. Surface of petiole polished with sparse punctures; lateral area of petiole weakly rugose; median field of postpetiole polished, lateral field of postpetiole weakly rugose-punctate; T 2 strongly punctate except gastrocoelus and area between gastrocoeli roughly rugose; T 3 weakly densely punctate and coriaceous, T 4– T 5 coriaceous (Fig. 3-E, F). Petiole in dorsal view almost parallel sided in basal half; postpetiole moderately widened; dorsomedian carina weakly developed; median and lateral field of postpetiole weakly separated (Fig. 3-E). Posterior margins of T 5– T 7 slightly concave (Fig. 3-E). T 1 L/W = 2.1; T 2 L/W = 0.9. THI = 1.6. Male. Unknown. Diagnosis: This species can be easily distinguished from other species of the genus by combination of: body entirely black except scutellum with single white spot; scutellum moderately convex; areolet quadrangular; T2 strongly punctate. Distribution: Japan (Honshû). Etymology: The new species is named after a great taxonomist of Darwin wasp, Dr Kyohei Watanabe, who collected the holotype. Remarks: This species is probably rare, as only single specimen was found. The morphological characteristics, such as body sculpture and quadrangular areolet, are somewhat similar to L. gotoi Kusigemati, 1986 from Taiwan, although the colorations are different; in gotoi, head with broad yellow bands on each side of vertex to clypeus, pronotum and subalar ridge with yellow markings, and each femur, hind and mid tibiae reddish-brown. Considering by the morphological similarity with Oriental species, this new species might be found in southern part of Japan.Published as part of Kikuchi, Namiki & Konishi, Kazuhiko, 2021, A taxonomic revision of the genus Linycus Cameron, 1903 from Japan, pp. 546-558 in Zootaxa 4948 (4) on pages 552-553, DOI: 10.11646/zootaxa.4948.4.3, http://zenodo.org/record/462938
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