1,272 research outputs found

    Analisis Tingkat Kebisingan Akibat Lalu Lintas Pada Kawasan Perkantoran dan Pendidikan di Kecamatan Kota Utara Kota Gorontalo

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    Increased traffic volume can result in environmental issues such as noise or noise pollution. The purpose of this study is to analyze the noise levels in the office and educational areas in Kota Utara District, Gorontalo City, using a traffic noise prediction calculation model and to analyze the comparative value of noise levels based on the prediction calculation model and quality standards according to KEP-48/MENLH/11/1996. The location of this study is spread over several points, namely in Kampus STIKES Bina Mandiri Gorontalo, in front of Kantor Kejaksaan Tinggi Gorontalo, and in front of Kantor Imigrasi TPI Kelas I Gorontalo. The method used in this study is an empirical method with a prediction model for traffic noise prediction.The results showed that the highest noise levels on Monday and Thursday occurred in the Kampus STIKES Bina Mandiri Gorontalo area with a noise intensity of 65.71 dB (A) and 64.71 dB (A). The highest noise level on Saturday occurred in front of Kantor Kejaksaan Tinggi Gorontalo with a noise intensity of 65.12 dB (A). According to a comparison of the results of the analysis and the quality standard according to KEP-48/MENLH/11/1996, the average noise level in the Kampus STIKES area has exceeded the quality standard value for the educational area, which is 55 dB (A). The noise level in front of Kantor Kejaksaan Tinggi Gorontalo on Saturday at 07.00–08.00 WITA shows that the noise intensity has exceeded the quality standard for office areas, which is 65 dB (A). Meanwhile, the noise level in front of Kantor Imigrasi on average still meets the quality standards required for office areas

    Nutritional Risk Assessment and Cultural Validation of the Modified NUTRIC Score in Critically Ill Patients-A Multicenter Prospective Cohort Study

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    PURPOSE: Characterize the nutritional risk of critically ill patients with the modified NUTrition Risk in the Critically ill (NUTRIC) score. MATERIALS: National, multicenter, prospective, observational study conducted in 15 polyvalent Portuguese intensive care unit (ICU), during 6 months. Adult patients were eligible. Those transferred from another ICU or readmitted, brain dead at admission, and with length of ICU stay (LOS) of 72 hours or less were excluded. NUTRIC score was calculated at admission; scores ≥5 represent a high nutritional risk. Main outcome was mortality from all causes at 28 days after admission to the ICU; LOS and days without mechanical ventilation (days free of MV) were secondary outcomes. RESULTS: From 2061 admissions, 1143 patients were considered, mostly males (n = 744, 64.7%) with median (P25-P75) age of 64 (51-75). Patients at high nutritional risk were 555 (48.6%). High NUTRIC score was associated with longer LOS (P < .001), less days free of MV (P = .002) and higher 28-day mortality (P < .001). The area under the curve of NUTRIC score ≥5 for predicting 28-day mortality was 0.658 (95% CI, 0.620-0.696). NUTRIC score ≥5 had a positive predictive value 32.7% and a negative predictive value 88.8% for 28-day mortality. CONCLUSIONS: Almost half of the patients in Portuguese ICUs are at high nutritional risk. NUTRIC score was strongly associated with main clinical outcomes.info:eu-repo/semantics/publishedVersio

    Effects of sintering temperature on microstructure and properties of sanitaryware ceramic produced with waste material

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    Abstract This paper aims at exploring the possibility of using a great percentage of recycled materials into vitreous china (VC), thus, contributing to urban waste decrease while lowering the industry's buying costs, previously optimized, for the sanitaryware production. The recycled blend was introduced in the ceramic slip, Sanitser VC, and used in three sanitaryware production plants. This slip let to improve the environmental performances of the overall ceramic production through energy-saving and a decrease in greenhouse gas emissions. In fact, the firing temperature is 80-100 °C lower than traditional production. Therefore, the objective of this paper was to evaluate the firing behavior, technological properties, and microstructure of a typical industrial vitreous china body in comparison with Sanitser VC. The analytical results confirmed the force of this idea and highlighted the advantages of the choice made

    Workpresence - Aplicação para a gestão de presenças

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    A gestão e controlo de presenças nas organizações tem, ao longo dos anos, vindo a merecer uma atenção cada vez mais significativa no meio das organizações. Existe uma perceção clara que o controlo eficaz e análise de presenças uma maior produtividade dos funcionários e, consequentemente, das organizações. O presente trabalho consiste no processo de desenvolvimento de um sistema informático para a gestão de presenças de funcionários de uma organização, na qual os funcionários utilizem uma aplicação móvel no seu smartphone, para registarem as suas entradas e as suas saídas. O administrador da organização terá acesso às suas ferramentas de gestão, visualização de estatísticas e à atividade dos seus funcionários através de uma aplicação Web. Estas duas aplicações estabelecerão comunicação entre as duas, através de tecnologia WebService. Já existem algumas aplicações no mercado de gestão de presenças, no entanto a grande maioria faz uso de sensores físicos, para controlar as presenças dos funcionários. Estes sensores físicos trazem algumas desvantagens como: requerem amplo tempo a serem instaladas, os funcionários necessitam de adaptar a novas rotinas, estão sujeitos a manutenções periódicas e em caso de avaria, a sua reparação pode demorar semanas. Todas estas desvantagens fazem com que os sensores físicos sejam bastante invasivos e difíceis de se adaptar a mudanças dentro de uma organização. O sistema proposto, designa-se por WorkPresence, utiliza as tecnologias Android e Web para disponibilizar a qualquer organização, um sistema de gestão de presenças que seja adaptável, intuitivo, pouco invasivo, sem custos de manutenção e utilizável em qualquer computador ou smartphone Android

    Growth laws and self-similar growth regimes of coarsening two-dimensional foams: Transition from dry to wet limits

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    We study the topology and geometry of two dimensional coarsening foams with arbitrary liquid fraction. To interpolate between the dry limit described by von Neumann's law, and the wet limit described by Marqusee equation, the relevant bubble characteristics are the Plateau border radius and a new variable, the effective number of sides. We propose an equation for the individual bubble growth rate as the weighted sum of the growth through bubble-bubble interfaces and through bubble-Plateau borders interfaces. The resulting prediction is successfully tested, without adjustable parameter, using extensive bidimensional Potts model simulations. Simulations also show that a selfsimilar growth regime is observed at any liquid fraction and determine how the average size growth exponent, side number distribution and relative size distribution interpolate between the extreme limits. Applications include concentrated emulsions, grains in polycrystals and other domains with coarsening driven by curvature

    Magnetic field resistant quantum interferences in bismuth nanowires based Josephson junctions

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    We investigate proximity induced superconductivity in micrometer-long bismuth nanowires con- nected to superconducting electrodes with a high critical field. At low temperature we measure a supercurrent that persists in magnetic fields as high as the critical field of the electrodes (above 11 T). The critical current is also strongly modulated by the magnetic field. In certain samples we find regular, rapid SQUID-like periodic oscillations occurring up to high fields. Other samples ex- hibit less periodic but full modulations of the critical current on Tesla field scales, with field-caused extinctions of the supercurrent. These findings indicate the existence of low dimensionally, phase coherent, interfering conducting regions through the samples, with a subtle interplay between orbital and spin contributions. We relate these surprising results to the electronic properties of the surface states of bismuth, strong Rashba spin-orbit coupling, large effective g factors, and their effect on the induced superconducting correlations.Comment: 5 page

    Peer Support Specialists and Service Users’ Perspectives on privacy, confidentiality, and security of digital mental health

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    As the digitalization of mental health systems progresses, the ethical and social debate on the use of these mental health technologies has seldom been explored among end-users. This article explores how service users (e.g., patients and users of mental health services) and peer support specialists understand and perceive issues of privacy, confidentiality, and security of digital mental health interventions. Semi-structured qualitative interviews were conducted among service users (n = 17) and peer support specialists (n = 15) from a convenience sample at an urban community mental health center in the United States. We identified technology ownership and use, lack of technology literacy including limited understanding of privacy, confidentiality, and security as the main barriers to engagement among service users. Peers demonstrated a high level of technology engagement, literacy of digital mental health tools, and a more comprehensive awareness of digital mental health ethics. We recommend peer support specialists as a potential resource to facilitate the ethical engagement of digital mental health interventions for service users. Finally, engaging potential end-users in the development cycle of digital mental health support platforms and increased privacy regulations may lead the field to a better understanding of effective uses of technology for people with mental health conditions. This study contributes to the ongoing debate of digital mental health ethics, data justice, and digital mental health by providing a first-hand experience of digital ethics from end-users’ perspectives.publishedVersio

    The role of asymmetric interactions on the effect of habitat destruction in mutualistic networks

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    Plant-pollinator mutualistic networks are asymmetric in their interactions: specialist plants are pollinated by generalist animals, while generalist plants are pollinated by a broad involving specialists and generalists. It has been suggested that this asymmetric ---or disassortative--- assemblage could play an important role in determining the equal susceptibility of specialist and generalist plants under habitat destruction. At the core of the argument lies the observation that specialist plants, otherwise candidates to extinction, could cope with the disruption thanks to their interaction with generalist pollinators. We present a theoretical framework that supports this thesis. We analyze a dynamical model of a system of mutualistic plants and pollinators, subject to the destruction of their habitat. We analyze and compare two families of interaction topologies, ranging from highly assortative to highly disassortative ones, as well as real pollination networks. We found that several features observed in natural systems are predicted by the mathematical model. First, there is a tendency to increase the asymmetry of the network as a result of the extinctions. Second, an entropy measure of the differential susceptibility to extinction of specialist and generalist species show that they tend to balance when the network is disassortative. Finally, the disappearance of links in the network, as a result of extinctions, shows that specialist plants preserve more connections than the corresponding plants in an assortative system, enabling them to resist the disruption.Comment: 14 pages, 7 figure

    Epibiosis in decapod crustaceans by stalked barnacle Octolasmis lowei (Cirripedia: Poecilasmatidae)

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    Stalked barnacles Octolasmis lowei Darwin, 1851 are frequently found attached to decapod crustaceans. Their epibiotic association depends on many factors, which are mainly related to characteristics of the host's biology. This study evaluated the infestation and distribution of stalked barnacles in the branchial chambers of crabs, and analyzed the data with respect to the host's sex, maturity stage, molt cycle and size. The crab species Arenaeus cribrarius Lamarck, 1818, Callinectes danae Smith, 1869, Callinectes ornatus Ordway, 1863, Hepatus pudibundus Herbst, 1785, Libinia ferreirae Brito Capello, 1871, and Persephona punctata Linnaeus, 1758 were sampled and found to be infested by O. lowei. No juvenile crabs were infested. The prevalence of infestation by O. lowei was significantly different among C. danae, C. ornatus, and H. pudibundus males and females. All infested hosts were in the intermolt period. The mean size of infested crabs was larger than that observed for non-infested individuals. Internally, stalked barnacles were concentrated on the central gills or walls and floor of branchial chambers, suggesting that these gills provide more favorable conditions for the settlement and development of these epibionts. These results highlight the relationship between epibiont infestation and host biology, as well as the role of decapod crustaceans as a suitable substrate for the development of stalked barnacle O. lowei.30731
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