1,485 research outputs found

    Livestock Producer’s Nutrient Management Planner Guidebook: A Waste Management Planning Guide for Pacific Island Livestock Producers

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    This Livestock Producer’s Nutrient Management Planner provides you, the livestock producer, with help in developing an animal waste management plan for your farm. The plan will be unique to each individual farm due to differences in the types of animals you raise, where your farm is located, and how you manage your operation. This workbook is designed to provide the basics on laws and regulations, the concept of nutrient flow through your farm, a series of worksheets to establish the status of your operation, and a guide to developing your farm’s nutrient management plan

    Water issues in Hawaii: public attitudes in 2004 and 2010

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    This report examines Hawai‘i residents' awareness of, attitudes about, and actions taken concerning water quality. "Water quality" is a measure of the suitability of water for a particular use, such as drinking, recreation, agricultural irrigation, or protection and maintenance of aquatic life

    Research progress and trends on the use of concrete as thermal energy storage material through bibliometric analysis

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    A landmark review of concrete as thermal energy storage material is presented through a bibliometric analysis approach. This study shows influential literature and the current relevant research directions. Geographical source and the identification of the significant publications enable determining the leading authors and research groups of the topic. The methodology is based on an accurately defined query, composed of remarkable keywords for the study. Two queries are set out, the first one from a holistic point of view of the topic, while the second one has a special consideration on concrete as TES under high-temperature conditions. Most part of the literature research pays attention to concrete applications in buildings, while other applications such as solar energy are in the rear face. Throughout the years, great interest in latent heat storage technology is observed using phase change material (PCM), implementing them in concrete mixtures or in other formats integrated into a building component. Despite the fact that the area of research is currently in prominent development, some literature gaps and new research directions are identified. Concepts such as climate change mitigation, concrete components, maintenance, are possible in-progress initiatives which need to be further studied.This work was partially funded by the Ministerio de Ciencia, Innovación y Universidades de España (RTI2018–093849-B-C31 - MCIU/AEI/FEDER, UE) and by the Ministerio de Ciencia, Innovación y Universidades - Agencia Estatal de Investigación (AEI) (RED2018–102431-T). The authors at the University of Lleida would like to thank the Catalan Government for the quality accreditation given to their research group (2017 SGR 1537). GREiA is certified agent TECNIO in the category of technology developers from the Government of Catalonia. This work is partially supported by ICREA under the ICREA Academia program. A.L. Pisello thanks the Italian project SOS-CITTA’ supported by Fondazione Cassa di Risparmio di Perugia under grant agreement No. 2018.0499.026

    Pest Management Systems to Control Rodents in and around Packing Sheds

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    Rodent trap types are described and their appropriate placement is indicated

    Experimental study and comparison of different fully transparent laminated glass beam designs

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    Laminated glass beams without metallic or polymeric reinforcements generally lack post-breakage strength and ductility. This paper aims to perform a comparative study by testing five different fully transparent laminated glass beam designs in order to see how parameters such as the number and thickness of glass sheets (3 x 10 mm or 5 x 6 mm), the interlayer material (PVB Clear or SentryGlas), and the thermal treatment of glass (annealed or heat-strengthened) affect the pre-breakage performance and post-breakage safety. A buckling analysis is also performed using a numerical model with ABAQUS CAE. The study includes a comparison between the results of different experimental mechanical tests on laminated glass beams, including the tests presented in this paper, as well as other tests found in the literature. All designs presented a linear elastic behaviour until initial breakage. The interlayer material mainly affected the crack shape of laminated glass beams. Beams with five sheets of annealed glass had a more progressive breakage, and therefore a safer behaviour, than beams with three sheets of annealed or heat-strengthened glass.The work was partially funded by CRISTEC with CDTI funds (IDI-20160588). The authors at the University of Lleida would like to thank the Catalan Government for the quality accreditation given to their research group GREiA (2017 SGR 1537). GREiA is certified agent TECNIO in the category of technology developers from the Government of Catalonia. This work is partially supported by ICREA under the ICREA Academia programme. The financing support given by the Spanish Ministry of Economy and Competitiveness through the project BIA2014-53774-R is gratefully appreciated. Xavier Centelles would like to thank University of Lleida for his research fellowship and to the University of Oviedo for hosting his secondment during 2019. Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature

    A Preliminary Study of Microbial Water Quality Related to Food Safety in Recirculating Aquaponic Fish and Vegetable Production Systems

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    This study examines microbial water quality in recirculating aquaponic systems. The pathogens studied were E. coli and Salmonella, and the levels were compared with existing food safety standards
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