313 research outputs found

    Weaving ‘figured - face flip face - fabric’ using orthogonal weft tapestry weave

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    The aim of this study is to evolve new compound weave structures by modifying and permuting the existing structures. Basic principles of orthogonal structure and weft tapestry structure have been studied. New ‘Orthogonal Weft Tapestry (OWT)’ weaves are evolved by combining these two weaves and the concepts involved in deriving the new weave have also been developed. The structure of ‘Two in one’ figured fabric available in the field has been analyzed. This fabric is renamed as ‘Figured - Face Flip Face - Fabric (FFFFF)’. Suitability of OWT weave to produce diversified FFFFF has been interpreted. Superimposing the guide graphs for the preparation of weave graph has been worked out using MS Paint to weave this fabric using electronic jacquard. Methodology of making double punching graph for mechanical jacquard weaving is also explored. The feasibilities of weaving these structures are explored using heald-treadle and jacquard shedding devices either separately or in combination. Fabric samples have been developed using mechanical jacquard in handloom. The techno - ergonomics of weaving methods are compared and recorded. It is observed that FFFFF produced with OWT weave has got features like uniqueness in appearance, fascinating utility value, and possibilities of producing exclusive product range

    Weaving twill damask fabric using ‘section- scale- stitch’ harnessing

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    The possibility of weaving figured twill damask using the combination of ‘sectional-scaled- stitched’ (SSS) harnessing systems has been explored. Setting of sectional, pressure harness systems used in jacquard have been studied. The arrangements of weave marks of twill damask using the warp face and weft face twills of 4 threads have been analyzed. The different characteristics of the weave have been identified. The methodology of setting the jacquard harness along with healds has been derived corresponding to the weave analysis. It involves in making the harness / ends in two sections; one section is to increase the figuring capacity by scaling the harness and combining it with other section of simple stitching harnessing of ends. Hence, the new harness methodology has been named as ‘section-scale-stitch’ harnessing. The advantages of new SSS harnessing to weave figured twill damask have been recorded. It is observed that the new harnessing methodology has got the advantages like increased figuring capacity with the given jacquard, less strain on the ends and versatility to produce all range of products of twill damask. It is also found that the new harnessing is suitable to weave figured double cloth using interchanging double equal plain cloth, extra warp and extra weft weaving

    Ultrasonic technology applied against mosquito larvae

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    The effective management of mosquito vectors is a timely challenge for medical and veterinary entomology. In this study, we evaluated the acoustic Larvasonic device to control young instars of the mosquito Aedes aegypti in diverse freshwater environments. Under laboratory conditions, we investigated the effect of exposure time and distance from the transducer on the mortality of larvae and pupae of Ae. aegypti. Furthermore, we evaluated the effectiveness of the ultrasound window of the electromagnetic spectrum under different field conditions. Results showed that first and second instar larvae were more sensitive to the frequency range of 18-30 kHz of the Larvasonic device. Ultrasonic waves applied for 180 s at a frequency from 18 to 30 kHz caused 100% larval mortality at a distance of 60 cm from the transducer. No mortality was observed in the non-target copepod Megacyclops formosanus. The exposure to the soundwaves produced by the acoustic larvicidal device over different distances effectively damaged Ae. aegypti through destruction of the larval dorsal tracheal trunk, thorax and abdomen. Overall, results indicated that the Larvasonic device tested can provide an alternative tool to reduce young instar populations of Ae. aegypti, without any effects on non-target aquatic invertebrates like copepods. It turned out to be a useful device for mosquito biocontrol. This technology has a relevant potential to fight the spread of mosquito-borne diseases

    A Scoping Review: Overview of Current Respectful Maternity Care Research by Research Approach and Study Location

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    Introduction: Disrespectful care during childbirth contributes to poor health outcomes, perpetuates disparities, and encourages childbirth outside of healthcare facilities. To measure disrespectful care, investigators use many research approaches. Most research has focused on low/low-middle income countries. This scoping review aims to 1) summarize current research and research approaches to analyze whether these approaches identify the same types of mistreatment and 2) identify gaps in current research analyzing disrespectful care during childbirth. Methods: Following PRISMA guidelines, this review utilized search terms to filter articles from the Pubmed database. Using specific criteria, articles were then excluded by title and abstract, then full article review. Included articles were organized by research approach and analyzed for study location and the presence of 9 types of mistreatment. Results: 102 included articles were organized by research approach, including direct labor observation, survey, interview, and focus groups, yielding 144 total studies to account for articles with more than one research approach. Each research approach identified all 9 types of mistreatment, with neglect/abandonment, verbal mistreatment, and physical mistreatment reported the most. Low-income countries represented 134/144 studies, with most research centered in East Africa and India. High-income countries represented only 7% of research. Discussion: This review is the first to organize current respectful maternity care research by research approach and study location. Analysis of study location shows gaps in research, particularly among high-income countries. Further research, particularly in high-income countries, is necessary to better this global health concern

    The IMEx coronavirus interactome: an evolving map of Coronaviridae-host molecular interactions

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    The current coronavirus disease of 2019 (COVID-19) pandemic, caused by the severe acute respiratory syndrome coronavirus (SARS-CoV)-2, has spurred a wave of research of nearly unprecedented scale. Among the different strategies that are being used to understand the disease and develop effective treatments, the study of physical molecular interactions can provide fine-grained resolution of the mechanisms behind the virus biology and the human organism response. We present a curated dataset of physical molecular interactions focused on proteins from SARS-CoV-2, SARS-CoV-1 and other members of the Coronaviridae family that has been manually extracted by International Molecular Exchange (IMEx) Consortium curators. Currently, the dataset comprises over 4400 binarized interactions extracted from 151 publications. The dataset can be accessed in the standard formats recommended by the Proteomics Standards Initiative (HUPO-PSI) at the IntAct database website (https://www.ebi.ac.uk/intact) and will be continuously updated as research on COVID-19 progresses

    Modern microwave methods in solid state inorganic materials chemistry: from fundamentals to manufacturing

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    Novel magnetite nanoparticles coated with waste sourced bio- based substances as sustainable and renewable adsorbing materials

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    This study examines the possibility of using bio-based product isolated from urban solid wastes as a material for environmental technological applications. To this end, Fe3O4 nanoparticles coated with different amounts of soluble bio-based products (SBO) were synthesized as low-cost nanoadsorbent for the removal of pollutants in wastewater. Particles of 10 nm diameter with Fe3O4 core and SBO shell were obtained. The concentration of SBO employed in the synthesis had no effect on the size and structure of the NPs, but ruled the pHPZC and aggregation of the nanoparticles in water. The cationic dye crystal violet (CV) was used as a model pollutant to test the adsorption capacity of the nanoparticles. The results indicated that both the medium pH and NP dosage were significant parameters to enhance the removal of CV. The results contribute to the studies which show how wastes can become a source of revenue through the industrial exploitation of their chemical value.Fil: Magnacca, Giuliana. Università di Torino; ItaliaFil: Allera, Alex. Università di Torino; ItaliaFil: Montoneri, Enzo. Università di Torino; ItaliaFil: Celi, Luisella. Università di Torino; ItaliaFil: Benito, Damián Ezequiel. Universidad Nacional de La Plata. Laboratorio de Investigación y Desarrollo de Métodos Analíticos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaFil: Gagliardi, Leonardo Gabriel. Universidad Nacional de La Plata. Laboratorio de Investigación y Desarrollo de Métodos Analíticos; ArgentinaFil: Martire, Daniel Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; ArgentinaFil: Gonzalez, Monica Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; ArgentinaFil: Carlos, Luciano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentin

    Yield and Economic Performance of Organic and Conventional Cotton-Based Farming Systems – Results from a Field Trial in India

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    The debate on the relative benefits of conventional and organic farming systems has in recent time gained significant interest. So far, global agricultural development has focused on increased productivity rather than on a holistic natural resource management for food security. Thus, developing more sustainable farming practices on a large scale is of utmost importance. However, information concerning the performance of farming systems under organic and conventional management in tropical and subtropical regions is scarce. This study presents agronomic and economic data from the conversion phase (2007–2010) of a farming systems comparison trial on a Vertisol soil in Madhya Pradesh, central India. A cotton-soybean-wheat crop rotation under biodynamic, organic and conventional (with and without Bt cotton) management was investigated. We observed a significant yield gap between organic and conventional farming systems in the 1st crop cycle (cycle 1: 2007–2008) for cotton (229%) and wheat (227%), whereas in the 2nd crop cycle (cycle 2: 2009–2010) cotton and wheat yields were similar in all farming systems due to lower yields in the conventional systems. In contrast, organic soybean (a nitrogen fixing leguminous plant) yields were marginally lower than conventional yields (21% in cycle 1, 211% in cycle 2). Averaged across all crops, conventional farming systems achieved significantly higher gross margins in cycle 1 (+29%), whereas in cycle 2 gross margins in organic farming systems were significantly higher (+25%) due to lower variable production costs but similar yields. Soybean gross margin was significantly higher in the organic system (+11%) across the four harvest years compared to the conventional systems. Our results suggest that organic soybean production is a viable option for smallholder farmers under the prevailing semi-arid conditions in India. Future research needs to elucidate the long-term productivity and profitability, particularly of cotton and wheat, and the ecological impact of the different farming systems
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