Stengården, an East Jutland Occupation Site from the Early Germanic Iron Age: The Problem of Settlement Continuity in Later Iron Age Denmark

Stengården, an East Jutland Occupation Site from the Early Germanic Iron Age. The Problem of Settlement Continuity in Later Iron Age Denmark

Productivity and quality, competition and facilitation of chicory in ryegrass/legume-based pastures under various nitrogen supply levels

Traditional perennial ryegrass-white clover mixtures have limitations in combined productivity and quality that herbs like chicory may alleviate. This study examined the consequences on productivity and quality of as well as competition and facilitation after introducing chicory into varies ryegrass-legume-based pastures in a field study over 3 consecutive growing seasons. A cultivar of chicory, suitable for grazing, in pure stand was found to out-yield a pure stand ryegrass in terms of dry matter and nitrogen (N) accumulation but was found to yield similar to mixture of chicory and ryegrass. The inclusion of chicory, increased N accumulation per area unit irrespective of associated leguminous species but had no effect (P>0.05) on the combined dry matter yield of these mixtures as compared to the chicory-ryegrass mixture. Chicory was not found to co-exist well with associated fodder legumes but it co-existed well with perennial ryegrass. Determined by a direct 15N plant labelling technique, chicory transferred little N to associated legumes and under moderate soil N conditions it almost out-competed the white clover whereas lucerne was able to withstand the competition with birdsfoot trefoil as intermediate. Chicory and ryegrass did exchange N amounting to less than 5% of the receiver plants’ N economy whereas the N transfer from the N-rich lucerne constituted 15% of the associated ryegrass’ N economy but less (P<0.05) of the chicory’s N economy. These differences are ascribed to the species’ root morphology and root zonation. Chicory accumulated large amounts of calcium, potassium, sodium and zinc but significant less of magnesium and manganese, irrespective of the N supply. In the case of sodium it was a short-term effect whereas calcium and possibly also sulphur, copper and zinc accumulation increased over time. It is concluded that chicory may improve the management of intensive dairy farms with a large N surplus because of the increase in productivity per unit area and N uptake efficiency and add significant improvements of the quality of the forage

A multiwavelet approach to the direct solution of the Poisson equation: implementation and optimization

This work is presenting a fully numerical approach for the direct solution of the Poisson equation for the electrostatic potential given by an arbitrary charge density. Efficient solution of this equation is important in many fields of science, where the current work is dealing with nuclear and electronic potential calculations, used in the field of computational chemistry. The equation is solved using the mathematical framework of multiwavelets, which is a theory that enables us to represent functions and operators with rigorous error control. The multiwavelet basis is well suited to treat the multiple length scales present in the calculation of electronic structure. A prototype implementation of the solution of the Poisson equation using the multiwavelet formalism has previously been obtained by the computational chemistry group at the University of Tromso¸, and the current work is dealing with optimization of the existing code and with the development of the code into new areas of applicability, specifically to the calculation of electronic structure using the framework of density functional theory

Developing an in house vulnerability scanner for detecting Template Injection, XSS, and DOM-XSS vulnerabilities

Web applications are becoming an essential part of today's digital world. However, with the increase in the usage of web applications, security threats have also become more prevalent. Cyber attackers can exploit vulnerabilities in web applications to steal sensitive information or take control of the system. To prevent these attacks, web application security must be given due consideration. Existing vulnerability scanners fail to detect Template Injection, XSS, and DOM-XSS vulnerabilities effectively. To bridge this gap in web application security, a customized in-house scanner is needed to quickly and accurately identify these vulnerabilities, enhancing manual security assessments of web applications. This thesis focused on developing a modular and extensible vulnerability scanner to detect Template Injection, XSS, and DOM-based XSS vulnerabilities in web applications. Testing the scanner against other free and open-source solutions on the market showed that it outperformed them on Template injection vulnerabilities and nearly all on XSS-type vulnerabilities. While the scanner has limitations, focusing on specific injection vulnerabilities can result in better performance

Pre-Viking and Early Viking Age Ribe: Excavations at Nicolajgade 8, 1985–86

Pre-Viking and Early Viking Age Ribe: Excavations at Nicolajgade 8, 1985–8

The Dating of Ribe's earliest Culture Layers

The Dating of Ribe's earliest Culture Layer

Excavations in Ribe 1979-82

Excavations in Ribe 1979-82

Udvalgte eksempler

Intet resum

Grøn, grønnere, Københavns Universitet.: Indblik i KU’s lange vej mod at blive et grønt universitet

Intet resum

PhytoMilk - Open seminar

Programme for open seminar for the PhytoMilk project held at Studentersamfundet, UMB, Ås, Norway, 23 June 201