9 research outputs found
Kuantan River, Malaysia: Prediction of salinity intrusion
No full textA mathematical model was used to simulate the long-term movements of the high water slack longitudinal salinity profile in the estuary of the Sg Kuantan, Malaysia. The proven model was then used to predict the effects on salinity of increased abstractions from the estuary under various drought conditions. The predicted longitudinal profiles were used to estimate the restrictions on abstraction at four sites assuming different limits on the salinity of the abstracted water. The main conclusion of the study is that, in the design drought conditions given, increased abstraction of water with tolerable salinity would not be possible for much of the year at the present intake, JKR Kobat (10.9 miles from the sea). Salinity levels would be considerably lower if the intake were moved to a point 16 miles from the sea, but for the abstracted water to be free of salinity above 0.2 ppt chlorides the intake would have to be moved at least 18.5 miles from the sea. An intake 20 miles from the sea would be affected by salinity of 0.1 ppt chlorides only for 30% of each tide on the worst 19 days of a 1 in 50 year drought
Gedenkboek van het Delftsch Studenten Corps ter gelegenheid van het twintigste lustrum
No full textDelft University of Technolog
Supplementary Material for: Five-Port Combined Limbal and Pars Plana Vitrectomy for Infectious Endophthalmitis
No full textPars plana vitrectomy for acute infectious endophthalmitis can be challenging due to severe inflammation in the anterior chamber creating significant media opacity. We describe a surgical technique combining limbal based vitrectomy and pars plana vitrectomy to manage acute infectious endophthalmitis. Limbal based vitrectomy facilitates removal of anterior chamber fibrin and inflammatory membranes for safe and optimal posterior pars plana vitrectomy
Chronic Unilateral Uveitis with Macular Edema Secondary to Dabrafenib for Pilocytic Astrocytoma
No full textThis report describes a unique case of chronic unilateral anterior uveitis associated with macular edema while on oral dabrafenib treatment for chronic recurrent pilocytic astrocytoma. After gradual taper of prednisolone acetate OS, the patient developed recurrent mild low-grade anterior uveitis and macular edema OS that required low dose of prednisolone acetate OS to prevent recurrences while on oral dabrafenib. When oral dabrafenib was temporarily discontinued for 3 months due to her ocular inflammation, she had no flares of her uveitis; however, her tumor increased significantly in size. The collaborative decision was made to continue her oral dabrafenib while on topical anti-inflammatory therapy for her uveitis. Clinicians should be aware of this potential unilateral sequela of uveitis secondary to dabrafenib. Further investigation should be conducted to identify factors that may place certain patients at higher risk for this complication. © 2021 The Author(s). Published by S. Karger AG, Basel.Open access journalThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at [email protected]
Sedentary Behavior Research Network (SBRN) - Terminology Consensus Project process and outcome
No full textBackground: The prominence of sedentary behavior research in health science has grown rapidly. With this growth there is increasing urgency for clear, common and accepted terminology and definitions. Such standardization is difficult to achieve, especially across multi-disciplinary researchers, practitioners, and industries. The Sedentary Behavior Research Network (SBRN) undertook a Terminology Consensus Project to address this need. Method: First, a literature review was completed to identify key terms in sedentary behavior research. These key terms were then reviewed and modified by a Steering Committee formed by SBRN. Next, SBRN members were invited to contribute to this project and interested participants reviewed and provided feedback on the proposed list of terms and draft definitions through an online survey. Finally, a conceptual model and consensus definitions (including caveats and examples for all age groups and functional abilities) were finalized based on the feedback received from the 87 SBRN member participants who responded to the original invitation and survey. Results: Consensus definitions for the terms physical inactivity, stationary behavior, sedentary behavior, standing, screen time, non-screen-based sedentary time, sitting, reclining, lying, sedentary behavior pattern, as well as how the terms bouts, breaks, and interruptions should be used in this context are provided. Conclusion: It is hoped that the definitions resulting from this comprehensive, transparent, and broad-based participatory process will result in standardized terminology that is widely supported and adopted, thereby advancing future research, interventions, policies, and practices related to sedentary behaviors
Catasetum grasineideae D. R. P. Krahl, Krahl, Chiron & J. B. F. Silva 2023, nothosp. nov.
No full textCatasetum × grasineideae D.R.P.Krahl, Krahl, Chiron & J.B.F.Silva, nothosp. nov. (Figures 2–3). Type:— BRAZIL. Amazonas: Careiro Castanho, Castanho Lake, epiphyte in Igapó, 3°44’08.35”S; 60°26’41.44”W, 8-10 m, 12 January 2022, A.H. Krahl & D.R.P. Krahl 1635 (holotype: INPA!). Hoc taxon naturalis hybrida inter C. gnomus et C. saccatum est, characteres intermedios efficiens. Non-resupinatos flores, ellipticolanceolata sepala petalaque, integrum suborbiculatum labellum com denticulato-serrato margine apice reflexo, parte centrali sacciformi conica, ostio latiore quam longo et duabus parvis protuberationibus in columnae proximali margine. Description:— Epiphytic caespitose plant. Rhizome short inconspicuous. Pseudobulb 3.7–7.5 × 1.0– 1.5 cm, fusiform, erect, clustered, 4-5–leaved, covered by leaf sheaths. Leaves 4.9–19.8 × 1.5–2.7 cm, linear-lanceolate, plicate, 3- 5–nerved, entire and slightly undulate margin, apex acute. Male inflorescence ca. 21.2 cm long, lateral, racemose, 1-5–flowered, erect then arched under the flower weight; peduncle cylindrical, greenish lightly purplish; floral bract ca. 0.7 × 0.6 cm, triangular, lightly greenish, margin entire, apex acute to obtuse. Male flower yellowish with brownish spots, especially on the sepals and petals, non-resupinated, pedicelled; pedicel ca. 3.3 cm long, cylindrical, erect and apically curved, purplish; sepals ca. 4.0 × 1.5 cm, elliptic-lanceolate, symmetrical, concave, margin entire, apex acute; petals ca. 4.1 × 1.6 cm, elliptic-lanceolate, symmetrical, margin entire and reflexed, apex acute; lip 3.0 × 4.5 cm, entire, subtrilobed, suborbicular, margins reflexed near the apex, denticulate to serrate, central part sacciform and conical; ostium ca. 0.9 × 1.4 cm, ca. 1.3 cm deep, opening somewhat flattened (transverse diameter longer), with two little protuberances on the edge nearest to the column; column ca. 3.2 × 1.0 cm, apex rostrate; antennae ca. 1.1 cm long, crossed; anther cap ca. 1.7 × 0.5 cm, rostrate; viscidium 0.25 × 0.35 cm, whitish, sticky; stipe ca. 0.6 × 0.2 cm, lamellate, rolled up, dark; pollinia 2, ca. 0.6 × 0.4 cm, obovate, thick, compressed, sulcate, yellowish. Female inflorescence and fruit not seen. Distribution and ecology:—the new taxon was found and collected on a phorophyte on the shore of the Castanho lake, in an igapó forest, in the municipality of Careiro Castanho, AM, Brazil. Based on personal observations, the parental species have already been observed in this place and in neighboring municipalities (e.g. Careiro da Várzea), especially along the BR 319 road. According to Petini-Benelli (2022), C. gnomus occurs in the states of Amazonas, Pará and Rondônia and C. saccatum in the entire North-Brazilian region as well as in the states of Mato Grosso and Mato Grosso do Sul. Thus, the geographical distribution of both species overlaps, including in the state of Amazonas where the new hybrid has been found. The new natural hybrid has been observed in bloom in January, a time when the parental species can flower. Based on author’s personal observations and on herbarium registers (e.g. CRIA database, 2022), we know that C. gnomus flowering generally begins in December and stops in April whereas C. saccatum is in bloom from August up to February. Consequently, the blooming times of both species overlap during at last three months (December, January and February), making possible their crossed pollination. As for the flower visitors, we already observed visit of male Eulaema bees on both parental species, which, once more, makes a genetic flux between them possible. These bees visit the flowers looking for volatile compounds (perfume) present on the lip. Etymology:—the specific epithet is given in honor to Maria Grasineide Gomes Passos, mother of the first author, orchid lover and great incentive to orchid study. Taxonomic Discussion:—the new entity shows characters intermediate between C. gnomus and C. saccatum (Figure 3), which allowed us to infer its taxonomic position as a nothospecies. As in most species within the genus it is impossible to define diagnostic vegetative features because these species practically share the same characters (Holst 1999, Walker-Larsen & Harder 2000). As for the floral morphology, especially in male flowers, we can mention various characters shared with the parental species. Flowers are not resupinate, as in C. gnomus (vs. resupinate in C. saccatum). Floral segments are elliptic-lanceolate as in C. saccatum (vs. obovate-lanceolate and linear-lanceolate in C. gnomus) (Pettini-Benelli 2022). The lip is entire and subtrilobed (vs. trilobed in C. gnomus and C. saccatum), but suborbicular as in C. saccatum, with the margin next to the apex reflexed and overall denticulate to serrate as in both parents (serrate in C. gnomus and fimbriate, laciniate or denticulate in C. saccatum). The central part of the lip is sacciform and conical with a transverse ostium as in C. saccatum and with two small protuberances on the edge next to column as in both parents, however less acute as in C. saccatum. The column shows a more rounded shape and a beak shorter and broader as in C. gnomus (vs. column narrower and oblong with a beak filiform in C. saccatum) (see Figure 4) (Lindley 1840a, Linden & Reichenbach 1870, Pessoa et al. 2015, Petini-Benelli 2017, 2022, Krahl 2020). We propose here a key to all the natural hybrids present in the Brazilian state of Amazonas (Figure 5), i.e. C. × grasineideae (C. gnomus × C. saccatum); C. × issanense Pabst (1975: 405) (C. pileatum Reichenbach (1882: 492) × C. longifolium Lindley (1839: 94)); C. × louiseae Krahl et al. (2020: 216) (C. discolor (Lindley 1835: t. 1735) Lindley (1844: Misc. 34) × C. macrocarpum Kunth (1822: 331)); C. × roseo-album (Hooker 1840: t. 3796) Lindley (1840b: 65) (C. discolor × C. longifolium); and C. × tapiriceps Reichenbach (1888: 133) (C. macrocarpum × C. pileatum) (according to Krahl et al. 2020 and Petini-Benelli 2022). It should be noted that C. × sheyllae Krahl, Cantuária & J.B.F.Silva in Cantuária et al. (2021) perhaps occurs in Amazonas but it is not confirmed. It occurs in fact in a border region between Amazonas and Pará (see Cantuária et al. 2021). We treated C. × roseo-album as a nothospecies, so disagreeing with Barbarena (2021) who treats it as an independent species. We have a large field knowledge as for the occurrence of C. × roseo-album in localities of Brazilian Amazon where C. discolor and C. longifolium are clearly sympatric species a few meters away from each other (eg. Pessoa et al. 2015). Moreover, the nothospecies clearly presents intermediate features between the parental taxa, what we already could observe in artificial crossings. In this way we agree with the opinion of Romero & Carnevalli (1989).Published as part of Krahl, Dayse Raiane Passos, Schmal, Philippe, Chiron, Guy, Silva, João Batista Fernandes Da, Krahl, Amauri Herbert & Cantuária, Patrick De Castro, 2023, Catasetum × grasineideae (Orchidaceae: Catasetinae), a new nothospecies from Brazilian Amazon and taxonomic notes for the genus, pp. 89-104 in Phytotaxa 594 (2) on pages 90-94, DOI: 10.11646/phytotaxa.594.2.1, http://zenodo.org/record/789198
Influencia de la dinámica de estuarios sobre la variabilidad espacial de macrobentos a lo largo de la plataforma continental del sudeste de Brasil
No full textAlong the southeast continental shelf of Brazil, the Paraíba do Sul River (PSR) plays a fundamental role in sediment and nutrient transport. This study focuses on the contribution of the PSR and its effect on the benthic macrofauna. Physical and chemical analyses of the sediment were conducted, and the macrofauna were identified and counted. Multivariate analyses were used to compare the distribution patterns of the benthic assemblages related to the depth gradient over two sampling periods. The principal component analysis showed that shallow waters assemblages are mostly influenced by the environmental descriptors temperature, salinity and chlorophyll a, whereas pheophytin, degree of sediment sorting, total carbonate and organic carbon were correlated with benthic assemblages at greater depths. The high organic enrichment reflected an increase in surface and sub-surface deposit feeders such as the polychaetes Spiophanes sp. and Prionospio cristata and the crustacean Phtisica marinain the deeper stations, with a corresponding decrease in other trophic groups. This study provides evidence of differences in organic matter sources, from primary production in shallow waters to detritus in deep waters. These sources provide different niches for the corresponding macrofaunal assemblages along the continental shelf adjacent to the PSR, with species richness and abundance of benthic populations related to the river output.A lo largo de la plataforma continental del sudeste de Brasil, el río Paraíba do Sul (RPS) juega un papel fundamental en el transporte de sedimento y nutrientes. Este estudio se enfoca en la contribución del RPS y sus efectos sobre la macrofauna bentónica. Se condujeron análisis físicos y químicos del sedimento, y la macrofauna fue identificada y contada. Se realizaron análisis multivariados para comparar los patrones de distribución de los ensamblajes bentónicos relacionados al gradiente de profundidad en dos periodos de muestreo. El análisis de componentes principales (ACP) mostró que los ensamblajes de aguas poco profundas son influenciados principalmente por los descriptores ambientales de temperatura, salinidad, y clorofila a, mientras que la feofitina, grado de clasificación de sedimentos, carbonato total y el carbón orgánico estaban correlacionados a los ensamblajes bentónicos a mayores profundidades. El alto enriquecimiento orgánico se refleja en un incremento de detritívoros superficiales y sub-superficiales como los poliquetos Spiophanes sp. y Prionospio cristata y el crustáceo Phtisica marinaen las estaciones más profundas, con el decrecimiento correspondiente en otros grupos tróficos. Este estudio provee evidencia de diferencias entre fuentes de materia orgánica, desde la producción primaria en aguas poco profundas hasta detrito en aguas profundas, que proveen distintos nichos a los ensamblajes macrofaunales correspondientes a lo largo de la plataforma continental adyacente al RPS, con la riqueza de especies y abundancia de las poblaciones bentónicas relativas al flujo del rio
Percepción de los profesionales de enfermería en la atención de personas hospitalizadas en una Unidad de Atención Psicosocial
No full textO estudo teve como objetivo compreender a percepção de profissionais de enfermagem frente ao cuidado prestado às pessoas internadas em uma Unidade de Atenção Psicossocial. Pesquisa de abordagem metodológica qualitativa, desenvolvida com 15 profissionais de enfermagem de uma Unidade de Atenção Psicossocial, por meio de entrevista semiestruturada, no mês de setembro de 2015. Para a análise dos dados, foi utilizada a Proposta Operativa de Minayo. Os resultados revelam que, a maneira de trabalhar é uma das influências no cuidado, enfatizando a importância do trabalho em equipe multiprofissional. A estigmatização em Saúde Mental é outro ponto, fazendo com que os profissionais reflitam sobre as pessoas internadas e suas necessidades. Ainda, referem que o trabalho na área da Saúde Mental é satisfatório, pois é possível obter resultados a partir do cuidado que é prestado. Conclui-se que, o estudo apresenta contribuições para que os profissionais de enfermagem reflitam sobre suas práticas e o cuidado, contribuindo com a produção do conhecimento possibilitando que profissionais, pessoas com transtornos mentais, seus familiares e a sociedade possam compreender um pouco mais acerca da temática.In this context the study aimed to understand the perception of nursing professionals regarding the care provided to people hospitalized in a Psychosocial Care Unit. A qualitative methodological approach research, developed with 15 nursing professionals from a Psychosocial Care Unit, through semi-structured interview, in September 2015. For the data analysis, the Minayo Operative Proposal was used. The results reveal that the way of working is one of the influences in care, emphasizing the importance of multiprofessional teamwork. Stigmatization in Mental Health is another point, making professionals reflect on hospitalized people and their needs. Still, they report that the work in the area of Mental Health is satisfactory, because it is possible to obtain results from the care that is provided. It is concluded that the study presents contributions for nursing professionals to reflect on their practices and care, contributing to the production of knowledge enabling professionals, people with mental disorders, their families and society to understand a little more about the thematic.El estudio tuvo como objetivo comprender la percepción de los profesionales de enfermería con respecto a la atención brindada a las personas hospitalizadas en una Unidad de Atención Psicosocial. Investigación metodológica cualitativa, desarrollada con 15 profesionales de enfermería de una Unidad de Atención Psicosocial, a través de una entrevista semiestructurada, en septiembre de 2015. Para el análisis de datos, se utilizó la Propuesta Operativa Minayo. Los resultados revelan que la forma de trabajar es una de las influencias en la atención, enfatizando la importancia del trabajo en equipo multiprofesional. La estigmatización en la salud mental es otro punto, que hace que los profesionales reflexionen sobre las personas hospitalizadas y sus necesidades. Aún así, informan que el trabajo en el área de Salud Mental es satisfactorio, porque es posible obtener resultados de la atención que se brinda. Se concluye que el estudio presenta contribuciones para que los profesionales de enfermería reflexionen sobre sus prácticas y cuidados, contribuyendo a la producción de conocimiento que permita a los profesionales, las personas con trastornos mentales, sus familias y la sociedad comprender un poco más sobre el temática
Nuevos registros de algas marinas y cianobacterias filamentosas de la isla Trindade: una lista de verificación actualizada para apoyar las pautas de conservación y el monitoreo de los cambios ambientales en los archipiélagos del Atlántico sur
No full textOceanic islands are natural laboratories for investigating species diversity and richness patterns. Changes in abiotic parameters may induce shifts in marine biota. Seaweeds are recognized as bioindicators, though those from remote tropical islands have been rarely studied. This study updates the diversity, richness and distribution of macroalgae from Trindade, a Brazilian volcanic island located 1140 km off the coast. Biotic data, obtained in a global database and in situ and compiled in a new records list, were associated with abiotic parameters. Conservation and ecological issues were discussed in the context of the observed greater richness, expansion of the distributional range and low endemism. A total of 141 species were identified, including 60 new records and 20 taxa of filamentous cyanobacteria. The greater richness, including potential cryptogenic species, may primarily be associated with past incomplete samplings, current new techniques and combined taxonomical methods, including molecular analysis for cryptic species. However, on the macroscale, this study provides information for the re-evaluation of aspects of endemism, connections and biogeographical distribution shifts of seaweed assemblages, considering environmental changes. In addition, this updated checklist establishes a baseline for further comparative studies, reinforcing the hypothesis that biogeographical isolation can be disrupted by meteorological and oceanographic shifts, altering dispersal patterns and resulting in higher ecosystems connectivity.Las islas oceánicas son laboratorios naturales para investigar la diversidad de especies y los patrones de riqueza. Los cambios en los parámetros abióticos pueden inducir cambios en la biota marina. Las algas son reconocidas como bioindicadores, aunque rara vez se han estudiado las de las islas tropicales remotas. Este estudio actualiza la diversidad, riqueza y distribución de macroalgas de Trindade, una isla volcánica brasileña ubicada a 1140 km de la costa. Los datos bióticos, obtenidos en una base de datos global e in situ, compilados en una nueva lista de registros, se asociaron con parámetros abióticos. Los temas ecológicos y de conservación se discutieron en el contexto de la mayor riqueza observada, la expansión del rango de distribución y el bajo endemismo. Se identificaron un total de 141 especies, incluidos 60 nuevos registros y 20 taxones de cianobacterias filamentosas. La mayor riqueza, incluidas las especies criptogénicas potenciales, puede estar asociada principalmente con muestreos incompletos del pasado, nuevas técnicas actuales y métodos taxonómicos combinados, incluido el análisis molecular de especies crípticas. Sin embargo, en la macroescala, este estudio proporciona información para la reevaluación de aspectos de endemismo, conexiones y cambios en la distribución biogeográfica de los conjuntos de algas marinas, considerando los cambios ambientales. Además, esta lista de verificación actualizada establece una línea de base para futuros estudios comparativos, lo que refuerza la hipótesis de que el aislamiento biogeográfico puede verse afectado por cambios meteorológicos y oceanográficos, alterando los patrones de dispersión y dando como resultado una mayor conectividad de los ecosistemas
