In Ethiopia, there is an urge to enhance milk production where urban and peri-urban farms play important role. Therefore, the role of such system in Greenhouse gas (GHG) emissions should be known. This study was conducted with objective estimating carbon footprint (CF) within Mekelle milkshed, Ethiopia. 50 42 dairy were selected randomly both primary secondary data collected. Lifecycle Assessme...

The environmental impacts of municipal solid waste (MSW) management have been highlighted in China, due to the continually increasing amount of MSW being generated and the limited capacity of waste treatment facilities. Of particular interest is greenhouse gas (GHG) mitigation, aided by the Kyoto Mechanisms. China is an important case study for this global issue; however, an analysis of the ent...

Emission trading has become recently more and more import in environmental regulation. In the context of controlling greenhouse gas emissions, the directive on a Europewide trading scheme for large immobile sources may be perceived as one of the most important milestones in recent years. Prior to its start, however, a number of very specific design features have to be agreed upon. In the politi...

In order to investigate the effect of Ca on biomass allocation strategies tree species with different growth rates under drought conditions, we treated poplar (Populus canadensis cv) cuttings and mulberry (Morus alba) seedlings two soil moisture levels (40 ± 5% 80 maximum water holding capacity) (0 200 mg·kg−1 Ca2+) in a greenhouse experiment, then measured uptake, growth, gas exchange paramete...

According to the grading curve and Water content allocation of hydrate reservoir, particle size distribution water condition formation sand are simulated, gas drive pressure difference is set. Under gravel packing control, one-dimensional unidirectional flow high argillaceous fine under analyzed, parameters such as displacement difference, rate, proportion permeability measured. The three phase...

in this paper, the energy efficient resource allocation in noma-based heterogeneous cellular network(hcn) systems is investigated. since energy consumption and its limitations is one of the important challenges in fifth generation of cellular networks (5g), we propose a resource allocation problem which allocates power and subcarriers to multiple users to achieve the best system energy efficien...

Assignment model is a powerful operations research techniques that can be used to solve assignment or allocation problem. This study applies the assignment model to the course allocation problem in Nigeria tertiary institution in order to maximize lecturers’ effectiveness. A well-structured questionnaire was used to obtain data from lecturers and solved with Hungarian method. The study revealed...