Essays about: "carbon cycle"

Showing result 1 - 5 of 209 essays containing the words carbon cycle.

  1. 1. Modelling gross primary production in semi-arid regions: effects on carbon uptake of intensive agriculture in southern Kenya

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Malin Ahlbäck; [2020]
    Keywords : Physical Geography; Ecosystem Analysis; GPP; Africa; Kenya; Land cover changes; Cropland; Remote sensing; Sentinel-2; Earth and Environmental Sciences;

    Abstract : Background and aim: Gross primary production (GPP) is the largest global carbon (C) flux and an important component for counteracting anthropogenic CO2 emissions, understanding vegetation dynamics, and sustaining universal human standards. Africa plays a prominent role in the global C cycle, though our understanding of GPP dynamics is largely hampered by a paucity of ground-based observations. READ MORE

  2. 2. Re-thinking green roof design : The prospect of a carbon sink structure investigated through a life cycle cost-benefit analysis

    University essay from Lunds universitet/Internationella miljöinstitutet

    Author : Aziliz Le Rouzo; [2020]
    Keywords : Carbon Footprint; Green Roof Design; Carbon Sink; Cost-Effectiveness; Life cycle Cost-Benefit Analysis; Green Roofs; Earth and Environmental Sciences;

    Abstract : Green Roofs (GRs) have been used worldwide as a solution for greening cities, while providing useful services to society such as storm water management, improved air quality, energy savings, and increased biodiversity, to name a few. However, the environmental impact of their structure has been understudied, and more importantly, the carbon cost related to the use of materials that have a high carbon footprint has received little to no attention. READ MORE

  3. 3. Environmental impact of a led fitting : A conducted life cycle analysis on a led fitting

    University essay from Jönköping University/JTH, Logistik och verksamhetsledning; Jönköping University/JTH, Logistik och verksamhetsledning

    Author : Mika Fröjd; Evelina Skårhammar; [2020]
    Keywords : Sustainability; Environmental impact; LCA; led fitting; Life cycle; use phase; end of life phase; transportation; Carbon dioxide equivalent CO2e ;

    Abstract : Purpose –The purpose of this research is to increase knowledge about how a led fitting impacts the environment. To be able to fulfil the purpose, it has been broken down into four research questions: • RQ1: What is the environmental impact during transportation? • RQ2: What is the environmental impact during the use phase? • RQ3: What is the environmental impact during the end of life phase? • RQ4: How can the environmental impact be decreased? Method: The authors worked abductive in the relation between theories and empirical data. READ MORE

  4. 4. Metabolic engineering of Escherichia coli for direct production of 4-hydroxybutyrate from glucose

    University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Author : Sussan Alipour; [2020]
    Keywords : Escherichia coli; 4- hydroxybutyrate; 4-HB dehydrogenase; 2-oxoglutarate decarboxylase; metabolic engineering; TCA cycle; Succinyl semialdehyde;

    Abstract : Growing concerns of the negative effects on the environment and dependency of fossil fuelsare major driving forces for finding novel sustainable production pathways for plastic.Metabolic engineering has emerged as a powerful tool to enable microorganisms to producenon-native metabolites. READ MORE

  5. 5. Hur grönt är ett stadsträd? : ett stadsträds klimatavtryck ur ett livscykelperspektiv

    University essay from SLU/Department of Landscape Architecture, Planning and Management (from 130101)

    Author : Erik Lind; [2020]
    Keywords : klimatavtryck; stadsträd; livscykelanalys; LCA; växthusgasutsläpp; koldioxidupptag; kolförråd; kolsänka; Salix alba; Quercus rubra; Pinus sylvestris; negativa utsläpp; klimatförändringar;

    Abstract : I uppsatsen undersöks vad plantering av ett enskilt stadsträd har för effekt på växthusgasbalansen. Ämnet undersöks genom litteraturstudie och livscykelanalys av plantering av E-plantor av trädarterna Salix alba, Quercus rubra och Pinus sylvestris i plantskolestorlek alléträd 30-35 med rotklump i öppen parkmark i Helsingborg, Stockholm och Umeå. READ MORE