The comparative study of nursing pads by electrospun cellulose acetate, polyethylene oxide and thermoplastic polyurethane nanofibers

This study summarizes the general information about nursing pads and novel electrospun nanofiber mats as potential component for nursing pads. It also compares electrospun thermoplastic polyurethane (TPU), cellulose acetate (CA) and polyethylene oxide (PEO) nanofibers with a polypropylene conventional disposable nursing pad (NP) in terms of hydrophilicity, breathability, air permeability and swelling properties. Nanofiber mats prepared by the electrospinning method have unique properties such as smooth surface, high specific surface area and high porosity with fine pores which will lead to improved wicking properties. These properties make nanofibers potential component for disposable nursing pads. Mean diameters of produced nanofibers were 284.39, 609.70 and 219.30 nm for CA, TPU and PEO, respectively. Water contact angle measurement revealed that these nanofibers show good wettability properties better than commercial nonwoven nursing mat and air permeability results revealed that these nanofibrous mats have considerably adequate permeability. Besides, water vapor permeability results showed these nanofibers still show good breathability despite their compact structure. © Published under licence by IOP Publishing Ltd

Spontaneous Magnetization and Electron Momentum Density in 3D Quantum Dots

We discuss an exactly solvable model Hamiltonian for describing the interacting electron gas in a quantum dot. Results for a spherical square well confining potential are presented. The ground state is found to exhibit striking oscillations in spin polarization with dot radius at a fixed electron density. These oscillations are shown to induce characteristic signatures in the momentum density of the electron gas, providing a novel route for direct experimental observation of the dot magnetization via spectroscopies sensitive to the electron momentum density.Comment: 5 pages (Revtex4), 4 (eps) figure

Элементы природы в крымско–татарском народном искусстве

В статье рассматривается система образования элементов орнамента. Типы орнаментального искусства и принципы группировки элементов изобразительной формы. Цветовое решение в орнаменте.В статі розглядається система освіти елементів орнамента. Типи орнаментального мистецтва і принципи згрупування елементів образотворчої форми. Кольорове рішення в орнаменті.The system of ornament's elements is representative in this article. Same types of art's ornament and some principles of grouping art's elements are here. Color's design in ornament

Genetic risk factors of cardiovascular disease

Atherosclerosis has a multifactorial origin involving abnormalities in lipid metabolism, hypertension, obesity, diabetes mellitus, smoking, inflammation, coagulation, and fibrinolysis, amongst others. At present, we lack a complete understanding of the relevance of these individual risk factors and their interplay in the disease process. It has been suggested that genetic factors contribute to the risk of CVD.The main aim of this thesis was to find new genetic risk factors for CVD, by using different analysis methods using new and existing publicly available data.In this thesis, we have identified new variants with small effects associated with lipid levels in a large meta-analysis of 66,240 individuals from 32 different studies.Unfortunately, we did not find an association between GRS of common variants with small effects on CVD and the number of events in a cohort of FH patients and a cohort of patients treated with statins. By using publicly available GWAS data we found that TG, LP(a), CAC and plaque are associated with CVD. We feel that sharing and combining datasets by making (summary-level) data publicly available for further research will contribute to the discovery of new (genetic) risk factors of CVD

Simulation of the ITER Poloidal Field Coil Insert DC Performance with a New Model

The Poloidal Field (PF) Coil Insert is made from a NbTi cable in conduit conductor and has been subjected to tests in the Central Solenoid Model Coil facility at JAEA in Japan. For the interpretation of the voltage tap signals from these tests, we adapted the JackPot model – which was used previously to analyse short sample tests – to simulate also the model coil experiments. A key ingredient of JackPot is that the local magnetic field on the superconducting strands and the inter-strand contact resistances all depend on the “trajectories” of the strands within the cable. These trajectories areprecisely calculated, ensuring a realistic distribution of magnetic field- and contact resistance values. The results of the model calculations show that the applied joints are most likely responsible for the poor performance of short samples of similar PF conductors in earlier experimental tests. The model predicts that the influence of the joints is significantly less pronounced for the Poloidal Field Coil Insert

Larvicidal activity of Ramalina usnea lichen against Aedes aegypti

AbstractThe larvicidal activity of the methanol extract, fractions and compounds 2-hydroxy-4-methoxy-6-propyl-methyl benzoate and (+)-usnic acid identified from the lichen Ramalina usnea (L.) R. Howe, Ramalinaceae, was tested against the third instar larvae of the Aedes aegypti mosquito. The methanol extract and three fractions showed activity, killing 100% and 96.6% of the larvae at a concentration of 150μg/ml at 24h. The isolated compounds, 2-hydroxy-4-methoxy-6-propyl-methyl benzoate and the (+)-usnic acid showed larvicidal activity, presenting LC50 values of 4.85 and 4.48μg/ml, respectively. This is the first study of its kind reporting the larvicidal activity against the A. aegypti mosquito with compound (1)