Sökning: "water supplies"

Visar resultat 1 - 5 av 58 avhandlingar innehållade orden water supplies.

1. 1. Challenges and Opportunities For Safe Water Supply in Mozambique

   Författare :Nelson Matsinhe; Avdelningen för Teknisk vattenresurslära; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; service quality; sustainability.; water treatment; water supply;

   Sammanfattning : In Mozambique, despite considerable investments in the promotion of drinking water supplies, the access to quality water of sufficient quantity for the majority of people is still far from optimal. Current official figures report that nearly half of the country´s population and about 45 per cent of urban residents do not have access to safe water. LÄS MER

3. 2. Monitoring and Evaluation of Rural Water Supply in Uganda

   Författare :Andrew Quin; Berit Balfors; Cecilia Öman; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; monitoring and evaluation; rural water supply; Uganda; Sub-Saharan Africa; Water engineering; Vattenteknik;

   Sammanfattning : Many nations in Sub-Saharan Africa, supported by donors, have increased efforts in their rural water supply programmes within the last few decades. However, these programmes suffer from a range of challenges and problems and, according to recent figures, over half of rural inhabitants in Sub-Saharan Africa lack access to safe water supplies. LÄS MER

4. 3. Photosynthetic water oxidation : the function of two extrinsic proteins

   Författare :Tatiana Shutova; Göran Samuelsson; Stenbjörn Styring; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; photosystem II; Psb0; Cah3; water oxidation; Plant physiology; Växtfysiologi;

   Sammanfattning : The solar energy accumulated by photosynthesis over billions of years is the sole source of energy available on Earth. Photosystem II (PSII) uses the sunlight to split water, an energetically unfavorable reaction where electrons and protons are extracted from water and oxygen is released as a by-product. LÄS MER

5. 4. Hydrogeological and geochemical assessment of aquifer systems with geogenic arsenic in Southeastern Bangladesh : Targeting low arsenic aquifers for safe drinking water supplies in Matlab

   Författare :Mattias von Brömssen; Prosun Bhattacharya; David Polya; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Arsenic; Bangladesh; drinking water; groundwater; sustainability; geochemistry; hydrogeology; modelling;

   Sammanfattning : Naturally occurring arsenic (As) in Holocene aquifers in Bangladesh have undermined a long success of supplying the population with safe drinking water. Arsenic is mobilised in reducing environments through reductive dissolution of Fe(III)-oxyhydroxides. LÄS MER

7. 5. Modern Artificial Recharge Plants : Combining chemical flocculation with aquifer recharge

   Författare :Kristofer Hägg; Avdelningen för Teknisk vattenresurslära; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Natural organic matter NOM ; Chemical flocculation; Ultrafiltration membrane; Disc filtration; Managed Aquifer Recharge;

   Sammanfattning : Water supply security is increasingly becoming a challenge worldwide. Surface waters, which are often used for drinking water production, have experienced an increase in natural organic matter (NOM) and frequency of algae blooms. Water quantity is also an issue due to increasing populations and potable water demand. LÄS MER