urban sinks accumulate phosphorus and other elements and may serve as sources of secondaryraw materials. this paper evaluates phosphorus sources based on their environmental impact. in a life cycleassessment (lca) the conventional production was used as a yardstick against which tomeasure the performanceof two recycling options: spreading of sewage sludge and phosphorus recovery from municipal ...

magnetic levitation (maglev) is amongst the most advanced technologies that are available to the transportation industries. it has already been noticed by decision makers in many countries around the globe. contrary to such high levels of interest, there are no practical algorithms available to the engineers and/or managers to assist them in analyzing economics of the maglev systems. therefore,...

There have been some observed studies and developed applications (apps), with a concentration on Mobile Assisted Language Learning (MALL), and no consideration of communicative needs of the learners; besides, these studies focused on either the theoretical aspects or the utilization of the available apps in the market (Burston & Athanasiou, 2020). Hence, Vocabulary Guru (VG), a custom-made mobi...

Because of the increasing concern regarding environmental sustainability, manufacturing equipment faces a challenge to optimize carbon emissions from life-cycle perspective. Current approaches lack overall low-carbon optimization flow guidance needed in order take effective measures for equipment. Consequently, this paper proposes framework Firstly, four-layer processes is established, consisti...

This paper develops a life cycle assessment framework for embodied environmental impacts of building construction systems. The is intended to be used early in the design stage assist decision making identifying sources higher and selecting sustainable alternatives. covers commonly systems such as reinforced concrete (RCC), hot-rolled steel (HRS), light (LSC). system boundary defined from cradle...