Sökning: "växter"

Visar resultat 1 - 5 av 461 avhandlingar innehållade ordet växter.

1. 1. Näringsvärden i vilda svenska växter : analyser och fysiologiska studier av olika komponenter med tonvikt på kolhydrater, protein och vitamin C

   Författare :Stefan Källman; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Växter; Fytokemi; Nutrition;

   Sammanfattning : In order to investigate the possibility of using wild plants as food in emergency situations and to provide results for further physiological studies, the content and seasonal variations of different nutritive components were investigated in 80 wild Swedish species, including 9 lichens. The plants were analysed for: glucose, fructose, galactose, sucrose, inulin, starch, crude protein, ascorbic acid, minerals, ash and amino acids. LÄS MER

3. 2. Teaching photosynthesis in a compulsory school context : Students' reasoning, understanding and interactions

   Författare :Helena Näs; Christina Ottander; Sylvia Benckert; Jenny Lewis; Umeå universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; teaching; primary and secondary school; plants; photosynthesis and respiration; Undervisning; mellan- och högstadiet; växter; fotosyntes och cellandning; Subject didactics; Ämnesdidaktik; didactics of natural science; naturvetenskapens didaktik;

   Sammanfattning : According to previous research, students show difficulties in understanding photosynthesis and respiration, and basic ecological concepts like energy flow in ecosystems. There are successful teaching units accomplished in this area and many of them can be described as inquiry-based teaching. LÄS MER

4. 3. Restoration of semi-natural grasslands : Impacts on biodiversity, ecosystem services and stakeholder perceptions

   Författare :Emelie Waldén; Regina Lindborg; Sara A O Cousins; Erik Öckinger; Aveliina Helm; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Biodiversity; Ecosystem services; Farmer; Landscape ecology; Plant; Policy; Restoration; Semi-natural grassland; Biologisk mångfald; Ekosystemtjänster; Landskapsekologi; Lantbrukare; Naturbetesmark; Policy; Restaurering; Växter; Äng; Physical Geography; naturgeografi;

   Sammanfattning : Humans play a major role shaping the living conditions for not only ourselves, but also all other species on Earth. In fact, some species-rich habitat types require human management to uphold the biodiversity and related ecosystem services. LÄS MER

5. 4. Wastewater treatment in constructed wetlands : Effects of vegetation, hydraulics and data analysis methods

   Författare :Hristina Bodin; Karin Tonderski; Jesper Persson; Stefan Weisner; Per Milberg; Hans Brix; Linköpings universitet; []
   Nyckelord :constructed wetland; free water surface flow; wastewater treatment; Kenya; Sweden; vegetation; harvest; Cyperus papyrus; Echinochloa pyramidalis; mass load; phosphorus; ammonium; suspended solids; pollutant removal; hydraulics; residence time distribution; data analysis methods; Konstgjorda våtmarker; avloppsvatten; vattenrening; fosfor; ammonium; partiklar; Kenya; Sverige; växter; Cyperus papyrus; Echinochloa pyramidalis; skörd; hydraulik; dataanalysmetod;

   Sammanfattning : Degradation of water resources has become one of the most pressing global concerns currently facing mankind. Constructed Wetlands (CWs) represent a concept to combat deterioration of water resources by acting as buffers between wastewater and receiving water bodies. LÄS MER

7. 5. Coloniæ plantarum in Svecia pars secunda quam venia ampliss. fac. philos. Upsal. publico examini subjiciunt Arvid. August. Afzelius ... et Andreas Svanbeck Uplandus in audit. Gust. d. XXV Novemb. MDCCCIX, P. 2

   Författare :Arvid August Afzelius; Andreas Svanbeck; Arvid August Afzelius; Uppsala universitet; []
   Nyckelord :Plants; Phytogeography; Plants; Växter; Växtgeografi; Sverige;

   Sammanfattning : .... LÄS MER