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We investigate whether it is possible that viable microbes could have been transported to the Earth from planets in extra-solar systems by means of natural vehicles such as ejecta expelled by comets or asteroid impacts on such planets. The probabilities of close encounters with other solar systems are taken into account as well as the limitations of bacterial survival times inside ejecta in space,
Proprioception of the knee was measured in 19 healthy individuals to evaluate whether there were any differences between extension and flexion movements from two different starting positions. The threshold before detecting a passive movement, visual estimation on a protractor of a passive change in position (30 degrees angular change) and active reproduction of the same angular change were registe
The 21st century is accompanied by a myriad of urban challenges with respect to energy use, waste management, transportation & mobility, water consumption and ecological space. An increasingly growing influx of people from rural to urban areas coupled with the already significant urban growth is presenting businesses, municipalities and the public with a multitude of challenges in managing and
BACKGROUND--Formoterol and salmeterol are new long acting beta 2 adrenoceptor agonists. The maximum relaxant effect, potency and functional antagonism against carbachol induced contraction for salmeterol, formoterol and salbutamol have been compared in the guinea pig isolated trachea. In addition, the possibility of inducing a non-beta adrenoceptor mediated relaxation by salmeterol was studied. ME
Objective. To study trends in body mass index (BMI) at diagnosis of diabetes in all young Swedish adults in the age range of 15-34 years registered in a nation-based registry. Design. The BMI was assessed at diagnosis in diabetic patients 15-34 years of age at diagnosis, for a period of 17 years (1983-1999). Islet cell antibodies (ICA) were measured during three periods (1987-1988, 1992-1993 and
The role of endothelium-derived nitric oxide in the regulation of vascular resistance (tonus) in cat skeletal muscle was studied with the use of NG-monomethyl-L-arginine (L-NMMA), a specific inhibitor of nitric oxide formation from L-arginine. The study was performed with a whole-organ technique which permits simultaneous, continuous and quantitative recordings of resistance reactions in the whole
A secret among staff at nursing homes is that they are often ambivalent about old residents spending so much time watching TV since it is a common cultural perception that it makes the viewer passive. The purpose of this paper is to highlight the importance of reflecting on the TV viewing habits old people bring with them when they move into geriatric care. The findings are based on a study involv
Background: Residual tumor volume (RTV) and extent of resection (EOR) have previously been shown to affect survival in glioblastoma (GB) patients. Quantitative radiological assessment (QRA) of these factors could potentially affect clinical decision-making in the postoperative period. Purpose: The first aim was to evaluate the reproducibility of different volume estimation methods of RTV and EOR b
Background: ATP-binding cassette (ABC) transporters have been associated with methylmercury (MeHg) toxicity in experimental animal models. Aims: To evaluate the association of single nucleotide polymorphisms (SNPs) in maternal ABC transporter genes with 1) maternal hair MeHg concentrations during pregnancy and 2) child neurodevelopmental outcomes. Materials and methods: Nutrition Cohort 2 (NC2) is
Fluctuations of neuronal activities in the brain may underlie relatively slow components of neurofunctional alterations, which can be modulated by food intake and related systemic metabolic statuses. Glutamatergic neurotransmission plays a major role in the regulation of excitatory tones in the central nervous system, although just how dietary elements contribute to the tuning of this system remai
The production of strange hadrons (KS0 , Λ, Ξ±, and Ω±), baryon-to-meson ratios (Λ/ KS0 , Ξ/ KS0 , and Ω/ KS0), and baryon-to-baryon ratios (Ξ/Λ, Ω/Λ, and Ω/Ξ) associated with jets and the underlying event were measured as a function of transverse momentum (p T) in pp collisions at s = 13 TeV and p Pb collisions at sNN = 5.02 TeV with the ALICE detector at the LHC. The inclusive production of the
In situ synthesis of oestrogens is of great importance in the development and progression of breast cancer. 17β-hydroxysteroid dehydrogenase (17HSD) type 2 catalyses oxidation from oestradiol to oestrone, and thereby protects the breast epithelial cells from oestradiol. Low expression of 17HSD type 2 has been associated with decreased survival in breast cancer, but no studies have investigated the
This paper examines the effect of European corporates’ sustainability performance on their economic and financial performance. The sustainability performance is represented by ESG scores in this paper. ESG evaluates the sustainability performance in environmental, social and governance aspects. The financial performance is measured as the average monthly stock return from January 2002 to July 2018
The Logical Framework Approach is applied in development projects all over the world. The Swedish aid agency Sida also encourages all aid organizations who receives funds from them or their umbrella organization Forum Syd to use the LFA for the improvement of development programs. However, the LFAs applicability in development interventions has been seriously criticized by researchers and by NGOs
Universitetslektor Kontaktinformation E-post: niklas_lars [dot] hallberg [at] fek [dot] lu [dot] seOrganisation Strategi Hämtställe: 10 WebbplatsNiklas Lars Hallbergs profil i Lunds universitets forskningsportalAndra roller Docent Strategi Publikationer Visar av publikationer. Sorterade efter år och sen titel. Filtrera efter typ AllaArtikel i vetenskaplig tidskriftBokDoktorsavhandling (monografi)K
https://www.ehl.lu.se/niklas-lars-hallberg - 2026-07-22
