Essays about: "diurnal variation"

Showing result 1 - 5 of 21 essays containing the words diurnal variation.

  1. 1. Planetary boundary layer height measurements in a rural environment in southern Sweden - Relation to meteorological parameters and aerosol particle concentrations

    University essay from Lunds universitet/Kärnfysik; Lunds universitet/Fysiska institutionen

    Author : Ellen Carneheim; [2020]
    Keywords : Physics and Astronomy;

    Abstract : The aim of this project is to analyse planetary boundary layer height (BLH) measurements from the Hyltemossa research station and find their dependence on seasonality, time of day, and air temperature. Further, investigation was made into the correlation between mass concentration of particulate matter with equivalent diameter... READ MORE

  3. 2. The digesta passage rate among dairy cows with different abilities to consume large quantities of roughage : its impact on the milk production, and the reliability of the chemical fibre marker

    University essay from SLU/Dept. of Animal Nutrition and Management

    Author : Maria Elisabeth Eklund; [2020]
    Keywords : chemical markers; chromium; chromium mordanted fibre; cobalt; concen-trate level; EDTA; iNDF; mean re-tention time; ethylenediaminetetraacetic acid; forage consumption; indigestible neutral detergent fibre; liquid digesta phase; MRT; rumen evacuation; sol;

    Abstract : The objectives of the present master thesis were to investigate the passage rate among lactating Holstein and Swedish red dairy cows to investigate the hypotheses of: 1) The cows’ individual total mean retention time (TMRT) has a negative relationship to the cows’ individual forage intake capacity. 2) A reduced TMRT contributes to a reduced feed efficiency, but a higher milk yield. READ MORE

  4. 3. Effects of Salinization on Lake Metabolism

    University essay from Karlstads universitet/Institutionen för miljö- och livsvetenskaper (from 2013)

    Author : Emil Nordström; [2020]
    Keywords : Freshwater ecology; carbon flux; mesocosms; diurnal variation;

    Abstract : With rising salinity levels in many freshwaters across the globe caused by for example sealevel rise and de-icing salts, it becomes important to understand what effect it has on freshwater ecosystems, since the lakes and rivers themselves are important parts in the global carbon cycle. In this study I have looked at what effects increased salinity levels have on different lakes metabolism, specifically oxygen concentration and primary production. READ MORE

  5. 4. Våm-pH hos mjölkkor : jämförelse av mättekniker och pH-förändring i samband med foderintag

    University essay from SLU/Dept. of Animal Nutrition and Management

    Author : Veronica Furenbäck; [2019]
    Keywords : nätmagens pH; våmacidos; SARA; LRCpH; eBolus; buffring; salivflödeshastighet; tuggaktivitet; idissling; peNDF; partikellängd; sortering;

    Abstract : Våmmens pH hos mjölkkor varierar under dygnet och mikroberna i våmmen behöver ett pH mellan 6-6,5 för att fungera optimalt. Normalt hålls våm-pH stabilt genom att kon absorberar flyktiga fettsyror (VFA) till blodet och den viktigaste mekanismen är saliven vilket har en buffringsförmåga då den innehåller bikarbonat och vätefosfatjoner. READ MORE

  6. 5. Irritable Bowel Syndrome - A descriptive studyof symptom variation

    University essay from Örebro universitet/Institutionen för medicinska vetenskaper

    Author : Mujanovic Marcus; [2019]
    Keywords : ;

    Abstract : Introduction: Irritable Bowel Syndrome (IBS) is a functional gastrointestinal disorder with abroad spectrum of symptoms. The current view on IBS is that there may be similar butdifferent pathologies for different patients with IBS even though they currently are includedin the same diagnostic entity. READ MORE