Academic literature on the topic 'Combined-cycle devices'

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Journal articles on the topic "Combined-cycle devices"

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Liu, Qinfeng, Xianjiao Zhang, Enke Zhang, and Tao Wang. "Research on Application of PDCA Cycle Combined with Intensive Maintenance Quality Management Mode in Hospital Medical Equipment Maintenance Management." Academic Journal of Science and Technology 2, no. 2 (2022): 31–34. http://dx.doi.org/10.54097/ajst.v2i2.1103.

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Objective To explore the application value of PDCA cycle combined with intensive maintenance quality management mode in hospital medical devices maintenance management. Methods In order to improve the maintenance management level of medical devices, PDCA cycle combined with intensive maintenance quality management mode was adopted in hospital medical devices maintenance, and the management efficiency of the maintenance quality management mode was verified. Results After PDCA cycle combined with intensive maintenance quality management mode, the stain-free rate of medical device surfaces and th
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Hryha, Volodymyr, Bogdan Dzundza, Stepan Melnychuk, Iryna Manuliak, Andrii Terletsky, and Mykhailo Deichakivskyi. "Design of various operating devices for sorting binary data." Eastern-European Journal of Enterprise Technologies 4, no. 4 (124) (2023): 6–18. http://dx.doi.org/10.15587/1729-4061.2023.285997.

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The object of research is the process of designing hardware devices for sorting arrays of binary data using the methodology of space-time graphs. The main task that is solved in the work is the development and research of multi-cycle operating devices for sorting binary data in order to choose the optimal structure with predetermined technical characteristics for solving the sorting problem. As an example, the development of different types of structures of multi-cycle operating sorting devices by the method of «even-odd» permutation is shown and their system characteristics are determined. Ne
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Zimnyakov, V. M., A. A. Kurochkin, D. I. Frolov, and O. N. Kukharev. "The working process of the device for combined massage of the udder of heifers." IOP Conference Series: Earth and Environmental Science 953, no. 1 (2022): 012003. http://dx.doi.org/10.1088/1755-1315/953/1/012003.

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Abstract The article discusses the concept of a unified approach to the development of pneumomechanical massage devices and milking machines. The practical implementation of this approach is considered. An improved pneumomechanical massage device is proposed. The main function is assigned to reduced pressure (vacuum) when performing technological operations of udder massage. The mechanical component of the device fulfils auxiliary function. The presence of an independent element in the suggested structural scheme of the device for the combined massage of heifers’ udders is substantiated. The c
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Bellam and, S., and S. K. Gupta. "An Efficient Geometric Algorithm For Extracting Structural Elements to Facilitate Automated MEMS Extraction." Journal of Computing and Information Science in Engineering 3, no. 2 (2003): 155–65. http://dx.doi.org/10.1115/1.1576429.

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Micro-electro-mechanical systems (MEMS) are very small devices that contain both mechanical and electrical elements with sizes in the order of microns. Design cycle time is an important consideration in the development and introduction of MEMS devices in the market. To develop extraction tools for MEMS designs, we need geometric algorithms to analyze the spatial layout of the mechanical portion of the MEMS device and extract a net-list of mechanical components. Such extracted net-list of mechanical components can be combined with the electronic component net-list to provide the complete device
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Kolasiński, Piotr, and Sindu Daniarta. "Sizing the thermal energy storage (TES) device for organic Rankine cycle (ORC) power systems." MATEC Web of Conferences 345 (2021): 00018. http://dx.doi.org/10.1051/matecconf/202134500018.

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Thermal energy storage (TES) became one of the main research topics in modern power engineering. The design of TES devices and systems depend on their application. Different thermal energy storage materials (e.g., solids, liquids, or phase change materials) can be applied in TES devices. The selection of the thermal energy storage material depends mainly on the thermal power and operating temperature range of the TES device. These devices and systems are applied in different energy conversion systems, including solar power plants or combined heat and power (CHP) stations. The application of TE
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Wang, Chun Long, Ye Liu, Xiao Long Lian, Qing Yuan Song, and Jin Ping Li. "Development of Combined Cooling and Power System with NH3-H2O Absorption Cycle Driven by Solar Energy." Advanced Materials Research 614-615 (December 2012): 132–38. http://dx.doi.org/10.4028/www.scientific.net/amr.614-615.132.

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In recent years, a combined cooling and power system (CCPS) with NH3-H2O absorption cycle has been aroused great interests. The previous researches on CCPS have been reviewed to summarize the properties of working pair and the experimental apparatus and demonstration devices firstly. Then, a new CCPS driven by solar energy has been developed and discussed.
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Sztekler, Karol, Wojciech Kalawa, Lukasz Mika, et al. "Modeling of a Combined Cycle Gas Turbine Integrated with an Adsorption Chiller." Energies 13, no. 3 (2020): 515. http://dx.doi.org/10.3390/en13030515.

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Forecasts to 2030 indicate that demand for electricity will increase from 2% to 3% per year, and due to the observed high rate of development of the world economy, energy demand will continue to increase. More efficient use of primary energy has influence on reduction emissions and consumption of fuel. Besides, reducing the amount of fuel burned, it reveals a beneficial effect on the environment. Since extraction-back pressure turbines have some limitations, including the restriction of electricity production due to limited heat consumption in summer. The paper discusses the possibilities of i
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Schwarz, Franziska, Klaus Schwarz, and Reiner Creutzburg. "New Methodology and Checklist of Wi-Fi Connected and App-Controlled IoT-Based Consumer Market Smart Home Devices." Electronic Imaging 2020, no. 3 (2020): 276–1. http://dx.doi.org/10.2352/issn.2470-1173.2020.3.mobmu-275.

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Since its invention, the Internet has changed the world, but above all, it has connected people. With the advent of the Internet of Things, the Internet connects things today much more than people do. A large part of the Internet of Things consists of IoT controlled Smart Home devices. The Internet of Things and the Smart Home have become an increasingly important topic in recent years. The growing popularity of Smart Home devices such as Smart TVs, Smart Door Locks, Smart Light Bulbs, and others is causing a rapid increase in vulnerable areas. In the future, many IoT devices could be just as
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Liu, Zongcheng, Jianping Han, and Penghui Yang. "Low-Cycle Fatigue Behavior and the Combined Cyclic Hardening Material Model of Plate-Shaped Zn-22Al Alloy for Seismic Dampers." Materials 17, no. 9 (2024): 2141. http://dx.doi.org/10.3390/ma17092141.

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This study investigates the potential of the plate-shaped Zn-22 wt.% Al (Zn-22Al) alloy as an innovative energy dissipation material for seismic damping devices, since plate-shaped material is more suitable to fabricate large-scale devices for building structures. The research begins with the synthesis of Zn-22Al alloy, given its unavailability in the commercial market. Monotonic tensile tests and low-cycle fatigue tests are performed to analyze material properties and fatigue performance of plate-shaped specimens. Monotonic tensile curves and cyclic stress–strain curves, along with SEM microg
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Sharp, C. J., A. Romero Francia, R. Franqueira Ximenes, et al. "Assessment of beam-intercepting device robustness for intensity increase in CERN’s North Area." Journal of Physics: Conference Series 2687, no. 8 (2024): 082038. http://dx.doi.org/10.1088/1742-6596/2687/8/082038.

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Abstract CERN’s North Area comprises several target and experimental systems and is a zone of interest for future development. Provision of beam to this area relies upon several beam-intercepting devices located in various branched transfer lines from the Super Proton Synchrotron. In several lines, these include a primary production target system of beryllium plates followed by a combined collimation, attenuation and dump device made from a set of aluminum, copper and iron blocks and known as a ‘TAX’ (Target Attenuator [for] eXperimental areas). These may operate in a range of configurations d
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Book chapters on the topic "Combined-cycle devices"

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Chen, Guobang, Zhihua Gan, Limin Qiu, and Jianping Yu. "Pulse Tube Refrigeration with a Combined Cooling and Freezing Cycle for HTSC Devices." In Cryocoolers 11. Springer US, 2002. http://dx.doi.org/10.1007/0-306-47112-4_38.

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Munoz Lopez, Edwin J., and Alexander Hergt. "Experimental and Numerical Investigations of SBLI and Flow Control on a Transonic Compressor Cascade." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-86605-0_14.

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Abstract The flow through a transonic compressor cascade is inherently unsteady due to the shock-boundary layer interactions (SBLI) on the blade. Despite decades of research, few details are known about the mechanisms that cause such behavior. This chapter presents a multidisciplinary study aiming to elucidate these mechanisms and optimize flow control methods to mitigate their effects. For this purpose, the Transonic Cascade TEAMAero was first optimized and its performance was validated experimentally. The cycle of shock oscillation was then compared using advanced experimental measurement te
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Velmurugan, Ramasamy, and Balasubramanian Subramanian. "Physicochemical Approaches for Thin Film Energy Storage Devices through PVD Techniques." In Energy Storage Devices [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.99473.

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For the fabrication of thin films, Physical Vapor Deposition (PVD) techniques specified greater contribution than all other deposition techniques. Laser Ablation or Pulsed Laser deposition (PLD) technique is the one of most promising techniques for the fabrication of thin films among all other physical vapor deposition. In particular, flexible thin-film energy storage fabrication PLD plays an important role due to its special parameters such as fine thickness control, partial pressure atmospheric condition, pulsed repetition rate, in-situ annealing and microstructure optimization. Very recentl
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Marian, L., and A. Giaralis. "Optimal design of inerter devices combined with TMDs for vibration control of buildings exposed to stochastic seismic excitation." In Safety, Reliability, Risk and Life-Cycle Performance of Structures and Infrastructures. CRC Press, 2014. http://dx.doi.org/10.1201/b16387-151.

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Oliver, Anthony R. "Laboratory Quality Control and Accreditation." In Tutorial Topics in Infection for the Combined Infection Training Programme. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198801740.003.0019.

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According to the International Organization for Standardization (ISO), the ‘Medical laboratories—Requirements for quality and competence (ISO 15189:2012) BS EN ISO 15189:2012’ accreditation is defined as ‘a procedure by which an authoritative body gives formal recognition that an organization is competent to carry out specific tasks’. Accreditation is delivered by the ‘competent authority’ based on a set of defined standards and the continual internal audit of the laboratory processes and infrastructure against these standards to achieve conformance. Additionally, the ‘competent authority’ per
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Conference papers on the topic "Combined-cycle devices"

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Reboli, Tommaso, Marco Ferrando, Lorenzo Gini, Luca Mantelli, Alessandro Sorce, and Alberto Traverso. "Gas Turbine Combined Cycle Range Enhancer - Part 2: Performance Demonstration." In ASME Turbo Expo 2022: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/gt2022-82516.

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Abstract In the current energy scenario, gas turbine combined cycles (GTCCs) are considered key drivers for the transition towards fossil-free energy production. However, to meet this goal, they must be able to cope with rapid changes of power request, and to extend their operating range beyond the limits imposed by the environmental conditions in which they operate. The European H2020 project PUMPHEAT [1] aims at achieving this goal thanks to the integration of the GTCC with a heat pump (HP) and a thermal energy storage (TES). Both HP and TES are used to condition the air flow at the gas turb
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Moritsuka, Hideto. "Proposal of Innovative Gas Turbine Combined Cycle Power Generation System." In ASME Turbo Expo 2004: Power for Land, Sea, and Air. ASMEDC, 2004. http://dx.doi.org/10.1115/gt2004-54177.

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In order to estimate the possibility to improve thermal efficiency of power generation use gas turbine combined cycle power generation system, benefits of employing the advanced gas turbine technologies proposed here have been made clear based on the recently developed 1500C-class steam cooling gas turbine and 1300C-class reheat cycle gas turbine combined cycle power generation systems. In addition, methane reforming cooling method and NO reducing catalytic reheater are proposed. Based on these findings, the Maximized efficiency Optimized Reheat cycle Innovative Gas Turbine Combined cycle (MOR
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Fisher, Mark D., and George A. Davies. "Flow Analysis Helps Correct Underperformance of Combined Cycle Emissions Equipment." In ASME 2006 Power Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/power2006-88209.

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Computational fluid dynamics analysis of the exhaust gas flow distribution in the inlet ductwork of a combined cycle power plant has helped improve both emissions performance as well as lowering plant operating costs. The Turlock Irrigation District Almond Power plant had recently installed an upgraded gas turbine (GT), and replaced both CO oxidation and selective catalytic control (SCR) NOx control catalysts in order to withstand the higher exhaust temperatures of the new gas turbine. After the retrofits, both NOx and CO emissions were within Permitted limits, but were above expected values,
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Desideri, Umberto, Francesco Fantozzi, Gianni Bidini, and Philippe Mathieu. "Use of Artificial Neural Networks for the Simulation of Combined Cycle Transients." In ASME 1997 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/97-gt-442.

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Due to techno-economic assets, the demand of combined cycles (CC) is currently growing. Nowadays, in a diversified electricity mix, these plants are often used on a load cycling duty or in the intermediate load range. The ability to start quickly and reliably may be a decisional criterion for the selection of the plant, in addition to the design performance, the cost and the pollutant emissions. Therefore, together with the simulation of CC transients, a proper monitoring system aimed at keeping high plant performance during the transients is required. With the help of advanced measurement and
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Jirnov, Alexei A., Anatoli Borissov, and James J. McCoy. "The Description of a Combined Thermodynamic Power System Using a Two-Phase Fluid and Air As Working Fluids." In ASME 2001 Internal Combustion Engine Division Spring Technical Conference. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/ices2001-133.

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Abstract A combined thermodynamic power system is described that uses a two-phase fluid (air and water) to form the basis of a cycle that employs the isothermal compression of the working fluid to improve the overall efficiency. The compressor and the expander described in the system utilize sliding-blade rotary devices that together make up an air-heat engine that operates on a modified Brayton cycle. Key to this device is the utilization of an isothermal compression of the air and the efficient use of waste heat in a regenerative process to achieve high thermal efficiency and reduce environm
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Khan, J. R., W. E. Lear, S. A. Sherif, and John F. Crittenden. "Second Law Analysis of a Novel Combined Cooling and Power Cycle With Water Harvesting." In ASME Turbo Expo 2005: Power for Land, Sea, and Air. ASMEDC, 2005. http://dx.doi.org/10.1115/gt2005-68628.

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The first and second laws of thermodynamics were used to analyze a novel cooling and power cycle that combines a semi-closed cycle called the High Pressure Regenerative Turbine Engine (HPRTE) with a vapor absorption refrigeration system (VARS). Waste heat from the recirculated combustion gas of the HPRTE is used to power the absorption refrigeration unit, which cools the high-pressure compressor inlet of the HPRTE to below ambient conditions and also produces excess refrigeration in an amount that depends on ambient conditions. The cycle is modeled using steady-state thermodynamics, with state
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Karrabi, H., and S. Rasoulipour. "Second Law Based Analysis of Supplementary Firing Effects on the Heat Recovery Steam Generator in a Combined Cycle Power Plant." In ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2010. http://dx.doi.org/10.1115/esda2010-24660.

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The supplementary firing is one of the techniques which are used to increase the output power of the combined cycle power plants (CCPP). The low construction cost per generated power encourages designers to consider it in the new CCPP. In this paper the thermal and exergy analyses of HRSG for various operating conditions in variation of loads and variation of ambient temperature carried out. They are based on the performance test data at different operating conditions. The objective of these analyses is to present the effects of supplementary firing on gross power output, combined cycle effici
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Scott-Murrell, Emrys, David Lanza, and Michael J. Schertzer. "Impedimetric Feedback in Particle Laden Digital Microfluidic Devices." In ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels collocated with the ASME 2015 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/icnmm2015-48494.

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Impedimetric measurement methods are a novel approach to the characterization of fluid in biological applications. Lab on a chip (LOAC) technologies could be combined with impedimetrics to benefit these applications. LOAC devices are currently being developed to pursue the miniaturization of larger scale processes. Current research shows great flexibility in using LOAC devices to reproduce biological processes such as those used in medical diagnostic applications. With a smaller form factor, testing that generally requires off-site lab usage can be deployed at the point-of-care. LOAC devices a
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Winkelmann, Anna, and Eric J. Barth. "Stirling Power Unit: Impact of a Controlled Displacer Piston on Efficiency and Power Output." In ASME/BATH 2015 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/fpmc2015-9609.

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This paper presents the design and dynamic model of a novel “controlled Stirling power unit” with an independently controlled displacer piston. Breaking the coupling traditionally seen in Stirling devices between the power piston and the displacer piston, realized either kinematically or dynamically, allows an additional control degree of freedom that can be used to shape the thermodynamic cycle independent of the load. The device presented combines such a controlled Stirling engine (called a pressurizer) with a power extraction unit. The dynamic models of three different power extraction unit
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Robinson, Matthew C., and Nigel N. Clark. "Fundamental Explorations of Spring-Varied, Free Piston Linear Engine Devices." In ASME 2014 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icef2014-5432.

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The conventional crank-based internal combustion engine faces many challenges to remain a viable option for electric power generation. Limitations in mechanical, thermal, and combustion efficiencies must be overcome by innovations in existing technologies and progress towards new ones. The free piston linear engine (FPLE) is a device with the potential to meet these challenges. Friction losses are reduced by avoiding rotational motion and linkages. Instead, electrical power is generated by the oscillation of the translator through a stator. Meanwhile, naturally variable compression ratio provi
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Reports on the topic "Combined-cycle devices"

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Sharma, Bhavna, Bryan Swanton, Joseph Kuo, et al. Use of Life Cycle Assessment in the Healthcare Industry: Environmental Impacts and Emissions Associated With Products, Processes, and Waste. Agency for Healthcare Research and Quality (AHRQ), 2024. http://dx.doi.org/10.23970/ahrqepctb48.

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Objectives. The objective of this Technical Brief is to assess the current use of life cycle assessment (LCA) frameworks in healthcare research and practice, understand the components of those frameworks, review LCA studies that have been conducted, and assess gaps in research and practice to guide future directions. Review methods. A scoping review combined with Key Informant interviews provided the input for the report. We searched a combination of biomedical (PubMed®); environmental (Agricultural & Environmental Science Collection, Environmental Science Database, Environment Index); and
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Brosh, Arieh, David Robertshaw, Yoav Aharoni, Zvi Holzer, Mario Gutman, and Amichai Arieli. Estimation of Energy Expenditure of Free Living and Growing Domesticated Ruminants by Heart Rate Measurement. United States Department of Agriculture, 2002. http://dx.doi.org/10.32747/2002.7580685.bard.

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Research objectives were: 1) To study the effect of diet energy density, level of exercise, thermal conditions and reproductive state on cardiovascular function as it relates to oxygen (O2) mobilization. 2) To validate the use of heart rate (HR) to predict energy expenditure (EE) of ruminants, by measuring and calculating the energy balance components at different productive and reproductive states. 3) To validate the use of HR to identify changes in the metabolizable energy (ME) and ME intake (MEI) of grazing ruminants. Background: The development of an effective method for the measurement of
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