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Analytical model of sand spit evolution

Spits typically consist of sand or gravel and are commonly occurring morphological features at inlets, river mouths, and the down-drift ends of barrier islands. Thus, they may form at the ocean-, lake-, or bay-side of inlets, entrances, and river mouths. Apart from the scientific interest in spits and their evolution, engineers have often studied spits with regard to their penetration into river m

Hydrogen peroxide vapour treatment inactivates norovirus but has limited effect on post-treatment viral RNA levels

Background: Hydrogen peroxide vapour is used as a room disinfectant. Its activity against murine norovirus, a surrogate viability marker for human norovirus, indicates that it is also active against human norovirus. Aim: The aim of this study is to assess how this effect on viability is reflected in measurements of RNA by quantitative PCR (qPCR). Methods: Faeces suspensions of two human norovirus

On the molecular mechanisms of the amyloid β-peptide aggregation

Proteins are tiny chemical machines that play many critical roles in our body. Some proteins send important messages, some carry crucial supplies, some fight with invaders and protect body from diseases, some clear trash etc. Proteins are strings of hundreds and thousands of small units called amino acids. If the string is built from less than hundred amino acids, it is called a peptide. DNA, a loThe pathogenesis of Alzheimer’s disease is widely believed to be due to production and deposition of the amyloid β-peptide. Several variants of the Aβ peptide are known to exist in in vivo. Variations include mutations or additional functional groups attached to residue side chains and may affect the aggregation process. Early on-set Alzheimer’s is caused by a variety of single amino acid substitu

An analytical model to predict dune and cliff notching due to wave impact

A model was developed to calculate the evolution of a notch in a dune or cliff due to wave impact. Analytical solutions were derived to the model for schematized conditions regarding forcing and dune/cliff properties. Comparisons were made with laboratory experiments where the time evolution of the notch was measured. Values of the transport coefficients in the analytical solutions were determined

Features of the international MSC educational programme in environmental management and modelling

“International Msc Educational Programme in Environmental Management and Modelling” (GeoNetC) is a European Commission funded project under ERASMUS+: Higher Education – International Capacity Building programme (Project No 561967-EPP-1-2015-1-SE-EPPKA2-CBHE-JP). It began in October 2015 and ended in October 2018. Initiated by the Lund University and partners from the Middle East countries, the Geo

Maternal selenium status and neuropsychological development in Spanish preschool children

BACKGROUND: The relationship between maternal selenium (Se) status and child neurodevelopment has been scarcely assessed. In a previous study we observed an inverse U-shaped association between maternal Se concentrations and infant neurodevelopment at 12 months of age. In this study, this non-linear association was explored at preschool age. The effect modification by breastfeeding, child's sex an

A biological approach to salinized soil amelioration in arid Northwest China – Saline water irrigated trees and shrubs on saline sodic soil

A field experiment was carried out to explore the possibilities of planting halophytes on salt-affected land with saline water irrigation. The changes in the salinity of the soil profile, the survival rate and growth conditions as well as the salt tolerance were investigated over a five-year period after the planting of halophyte shrubs and arbours. The results show that halophytes can assimilate

C3 glomerulopathy — understanding a rare complement-driven renal disease

The C3 glomerulopathies are a group of rare kidney diseases characterized by complement dysregulation occurring in the fluid phase and in the glomerular microenvironment, which results in prominent complement C3 deposition in kidney biopsy samples. The two major subgroups of C3 glomerulopathy — dense deposit disease (DDD) and C3 glomerulonephritis (C3GN) — have overlapping clinical and pathologica

Coordination between Lexical Tones and Melody in Traditional Kammu Singing

The study of the interaction between music and language is a small but rather active branch of musicology and linguistics. The two disciplines seldom meet. In this study we add a linguistic approach to our ethnomusicological knowledge. The cultural setting under study is Kammu, an Austroasiatic language spoken mainly in Laos. Kammu is a tone language where each syllable has a tone, either High or

RIFM fragrance ingredient safety assessment, 2-ethyl-5-methoxybicyclo[2.2.1]heptane, CAS registry number 122795-41-9

4H-4a,9-Methanoazuleno[5,6-d]-1,3-dioxole, octahydro-2,2,5,8,8,9a-hexamethyl-, (4aR,5R,7aS,9R) (CAS # 211299-54-6) was evaluated for genotoxicity, repeated dose toxicity, reproductive toxicity, local respiratory toxicity, phototoxicity/photoallergenicity, skin sensitization, and environmental safety. Data from 4H-4a,9-methanoazuleno[5,6-d]-1,3-dioxole, octahydro-2,2,5,8,8,9a-hexamethyl-, (4aR,5R,7

Dynamics of the development of multiple follicles by early versus late hCG administration in ART program

OBJECTIVE: To evaluate, in patients stimulated with recombinant FSH and GnRH antagonists, whether triggering the final maturation of oocytes affects IVF outcomes.STUDY DESIGN: Five hundred and six IVF procedures were divided into three groups according to the timing of hCG administration: when at least 2 follicles reached the diameter of 17 mm, at least 2 follicles reached 18 mm and at least 2 fol