Different programming languages

The rise of BASIC is very much a phenomenon of the mid 70’s and early 80’s. It comes as something of a surprise to discover that it was actually born in the 60’s. BASIC was designed by John Kemeny and Thomas Kurtz at Dartmouth College, in the USA. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3380

Patterning of Surfaces for Subsequent Roll Bonding in a Low-Oxygen Environment Using Deformable Mesh Inlays

Efficient roll bonding for the manufacturing of clad strips not only requires surface activation but also is improved by a surface patterning to reduce the initial contact area. This increases contact stresses and facilitates a joining without an increasing rolling force. Experiments to pattern surfaces with deformable inlays during cold rolling for a subsequent bonding in low-oxygen atmosphere were carried out using two types of rolling mills, two types of inlays and two types of assemblies. Digital twins of selected experiments were created by means of the FE simulation software QForm UK 10.2.4. The main set of rolling parameters, which play a significant role during formation of the pattern shape considering deformation of the patterning tool, were investigated. The pilot roll bonding of patterned components under vacuum conditions, provided using vacuum sealer bags, allowed for an experimental realization of this approach. The concept technological chain of roll bonding in a low-oxygen or oxygen-free environment comprises the following stages: roll patterning; surface activation and sealing of the strips in a vacuum bag; subsequent roll bonding of the prepared strips inside the protective bag. The difference between the shape of the pattern created and the initial shape of the mesh insert can be quantitatively described by the change of its angle. This difference reaches maximum values when smaller rolls are used with increased rolling reductions. This maximum value is limited by the springback of the deformed insert; the limit is reached more easily if the inlay is not positioned on the rolling plane

Sandwich rolling of twin-roll cast aluminium-steel clad strips

In the present study experimental results of twin-roll cast aluminium-steel clad strips of a thickness of 2.0 mm using the example of pure aluminium and an austenitic steel are presented. Electron probe measurements of the bonding area revealed the presence of a continuous interface layer of about 2 μm. To verify the formability of the twin-roll cast clad strips, sandwich samples were cold rolled with up to 66% strain. Furthermore, the sandwich samples were hot rolled at the temperature of 300 °C with different strain values. Mechanical properties, the microstructure and the surface quality of the deformed compound after rolling were analysed. To test ductility and formability of the rolled strips these were cold deep drawn.DFG/SCHA1484/21-

Интерпретация квантовой механики 100 лет спустя после ее создания

The basic axioms of quantum mechanics are given. Various interpretations of its mathematical formalism are discussed.Приводятся основные аксиомы квантовой механики. Обсуждаются различные интерпретации её математического формализма

POS-548 Glomerular filtration state of children with juvenile idiopathic arthritis according to Cys-C indicators

According to modern literature reveiw, it is believed that about 8% of children with juvenile idiopathic arthritis (JIA) have chronic kidney disease. Subclinical kidney damage in JIA remains undiagnosed in real clinical practice. Kidney damage can manifest itself as a complication of the underlying disease or, as a consequence, its long-term treatment.The structure of renal pathology in JIA is represented by secondary amyloidosis, glomerulonephritis, tubulo-interstitial nephritis. Methods: We investigated the level of cystatin C (Cys-C) in the blood of 80 children with JIA. The age of the subjects was from 3 to 17 years. The calculation of the glomerular filtration rate (GFR) was carried out twice (the first and third months of the study) on the basis of the concentration of Cys-C and creatinine in serum according to the methods: Hoek F.J. et al. (2003), Equation based on cystatin C (2012), Schwartz and Counahan-Barratt (2012)

Cause of acute kidney injury and unilateral kidney enlargement in a child with acute lymphoblastic leukemia: a case report

We want tо present a rare clinical case challenging in diagnosing the cause of acute kidney injury in a child with acute lymphoblastic leukemia (ALL)

Environmental problems

Environmental problems can be found in all areas of the world, and they affect land, water and air. Some of them result from what humans take from the environment, in the form of land for agriculture, and accommodation for a rapidly increasing population; mineral and fossil fuel resources; and timber. These problems include deforestation, erosion, damage to ecosystems and reductions in biodiversity. Other problems stem from what humans put into the environment, in the form of various pollutions. These issues include climate change, damage to the ozone layer, urban pollution, and acid rain

Environmental problems

Environmental problems can be found in all areas of the world, and they affect land, water and air. Some of them result from what humans take from the environment, in the form of land for agriculture, and accommodation for a rapidly increasing population; mineral and fossil fuel resources; and timber. These problems include deforestation, erosion, damage to ecosystems and reductions in biodiversity. Other problems stem from what humans put into the environment, in the form of various pollutions. These issues include climate change, damage to the ozone layer, urban pollution, and acid rain