960 research outputs found
ORBIT: The Oregon Road Base Information Team, A Draft Summary Report
It is clear that transportation organizations across the nation are integrating GIS into operations at many different levels—from day to day use for data display, to full-scale enterprise level integration for operations, inventory management, research and a variety of other purposes. The cost of building and maintaining a current and accurate GIS database can be substantial within any given organization. For some smaller level organizations—small counties, cities or special districts, the cost of gathering data, organizing it and implementing systems within expensive software on an expensive operating platform can be downright discouraging. Also, as more complex data structures are accumulated a window for more comprehensive modeling and analysis of regional issues is opened. Each of these trends alone provide ample incentive to develop data standards that can be applied to all systems to facilitate data sharing between organizations for system development, system update, or project specific purposes. Taken together these trends provide an imperative to develop data-sharing standards
Structural behaviour of reinforced concrete elements improved by layers of ultra hich performance reinforced concrete
EC88-2305 Six Steps to Mushroom Farming
Extension circular 88-2305 is six steps to mushroom farming
Impacts of COVID-19 on the value chain of the hake small scale fishery in northern Peru
The supply chain mapping and analysis of secondary sources was supported by The Walton Family Foundation (Grant 2019-319) and the estimation of COVID-19 impacts by a 2019–20 SFC-ODA GCRF (University of St Andrews) Grant.All aspects of fish supply chains have been severely affected by the COVID-19 pandemic, with jobs, income and food security at risk. In Peru, small scale fisheries are fundamental for food security, contributing to about 2/3 of all fish consumed nationally. One of the most important resources which is more affordable for local and regional consumption is hake (Merluccius gayi peruanus). This study is a first attempt to describe the small-scale hake fishery value chain and to quantify the impact of COVID-19 from March to August 2020 in two fishing communities in northern Peru. The levels of fishing and primary buying were the most affected, and we estimate that ~ 23,000 fishing trips were not conducted, ~ 1680 t of hake was not landed (83% decrease), and 620 jobs were negatively impacted during this period. The gross income of vessel owners and primary buyers decreased by ~ $US 913,000. Marked differences were observed in the way each community responded to the pandemic and in their resilience to cope with COVID-19, despite being located less than 10 km away. In El Ñuro, which relied more heavily on the international market for hake trade, the value chain was affected for longer, while in Los Órganos which supplied national markets, the chain was restored after an initial period of adjustment. Our study suggests that government efforts should focus on facilitating a formalisation process in all levels of the chain, develop indicators to monitor the resumption of activities and the inclusion of a value chain approach to small-scale fisheries management.Publisher PDFPeer reviewe
IDEAL Symposium on the East African Lakes
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/94975/1/eost9699.pd
Good practices for 68Ga radiopharmaceutical production
Background: The radiometal gallium-68 (Ga-68) is increasingly used in diagnostic positron emission tomography (PET), with Ga-68-labeled radiopharmaceuticals developed as potential higher-resolution imaging alternatives to traditional Tc-99m agents. In precision medicine, PET applications of Ga-68 are widespread, with Ga-68 radiolabeled to a variety of radiotracers that evaluate perfusion and organ function, and target specific biomarkers found on tumor lesions such as prostate-specific membrane antigen, somatostatin, fibroblast activation protein, bombesin, and melanocortin.
Main body: These Ga-68 radiopharmaceuticals include agents such as [Ga-68]Ga-macroaggregated albumin for myocardial perfusion evaluation, [Ga-68]Ga-PLED for assessing renal function, [Ga-68]Ga-t-butyl-HBED for assessing liver function, and [Ga-68]Ga-PSMA for tumor imaging. The short half-life, favourable nuclear decay properties, ease of radiolabeling, and convenient availability through germanium-68 (Ge-68) generators and cyclotron production routes strongly positions Ga-68 for continued growth in clinical deployment. This progress motivates the development of a set of common guidelines and standards for the Ga-68 radiopharmaceutical community, and recommendations for centers interested in establishing Ga-68 radiopharmaceutical production.
Conclusion: This review outlines important aspects of Ga-68 radiopharmacy, including Ga-68 production routes using a Ge-68/Ga-68 generator or medical cyclotron, standardized Ga-68 radiolabeling methods, quality control procedures for clinical Ga-68 radiopharmaceuticals, and suggested best practices for centers with established or upcoming Ga-68 radiopharmaceutical production. Finally, an outlook on Ga-68 radiopharmaceuticals is presented to highlight potential challenges and opportunities facing the community
Technologietransfer in Ostdeutschland. 2.Workshop in Arnstadt/Thueringen am 27.Oktober 1992. Erfahrungen aus der Technologielandschaft der alten Bundeslaender Mitteldeutscher Innovationsclub
Model for predicting the UHPFRC tensile hardening response
Ultra High Performances Fibre Reinforced Concretes (UHPFRC) are characterised by an ex-tremely low permeability and outstanding mechanical properties. These characteristics make UHPFRC suitable for locally “harden” reinforced concrete structures subjected to aggressive environments and/or mechanical stresses. Results from uni-axial tensile tests on different UHPFRC materials and cast in different directions have shown a variety of mechanical behav-iour. In particular, the hardening behaviour ranges from 0.1-0.4 % but is, in some cases, not existent. A meso-mechanical model is developed to predict the UHPFRC tensile response as a function of the volume, aspect-ratio, distribution and orientation of the fibres and the mechanical properties of the matrix. The model allows determining the effect of two parameters, the coeffi-cient of orientation and the volume of fibre, on the hardening behaviour
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