نتایج جستجو برای: sink effect
تعداد نتایج: 1653879 فیلتر نتایج به سال:
The relationship between the source and sink of atmospheric CO2 has always been a widely discussed issue in global climate change research. Recent studies revealed that chemical weathering carbonate rocks contributed to 1/3 (~0.5 Pg C/yr) missing carbon sinks (MCS) globally, there are still 2/3 MCS need be explored. As one main overburdened parts earth, loess is important driving factors for co...
The mobile sink can increase the efficiency of wireless sensor networks. It moves in a monitored environment and collects the network nodes information. Thus, by the sink we can balance the power consumption and increases the network lifetime. Determining path of the sink's movement is usually modeled as an optimization problem where finding optimal solutions require collecting value of all the...
Regional groundwater flow systems often contain both strong sinks and weak sinks. A strong sink extracts water from the entire aquifer depth, while a weak sink lets some water pass underneath or over the actual sink. The numerical groundwater flow model MODFLOW may allow a sink cell to act as a strong or weak sink, hence extracting all water that enters the cell or allowing some of that water t...
Received: 12 November 2002 / Accepted: 22 May 2003 / Published: 31 December 2003 __________________________________________________________________________________ Abstract: Based on a model of a two-heat-reservoir heat engine with a finite high-temperature source and bypass heat leak, the optimal configuration of the cycle is found for the fixed cycle period with another linear heat transfer l...
Article history: Received 23 December 2009 Received in revised form 10 June 2010 Accepted 10 June 2010 Available online 16 July 2010
Littele is known about the relationships of different traits in safflower using wild and cultivated species. In this study, 46 safflower genotypes from five different species were evaluated under normal and deficit irrigation and the relationship of traits was assessed. Results showed that water stress had significant effect on head yield per plant, number of seeds per head, head diameter and 1...
This communication presents finite time thermodynamic optimization of irreversible cascaded refrigeration and heat pump cycles having source/sink thermal reservoirs of finite heat capacitance. A general expression for the optimum coefficient of performance of the refrigerator/heat pump is derived at minimum power input and given cooling/heating load conditions, respectively. External irreversib...
We consider the problem of maximizing the lifetime of a wireless sensor network with a mobile sink. The sink travels at finite speed among a subset of possible sink locations to collect data from a stationary set of sensor nodes. The problem we consider chooses a subset of sink locations for the sink to visit, finds a tour for the sink among the selected sink locations, and prescribes an optima...
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