Wyniki wyszukiwania - Biblioteka Nauki

1

Automatyzacja obrabiarek w małych i średnich przedsiębiorstwach

100%

Honczarenko J. , Matyjek R.

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2013

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tom R. 86, nr 2

88--91

PL

Obecnie w Polsce funkcjonuje wiele małych i średnich przedsiębiorstw, w których pracują nowoczesne obrabiarki sterowane numerycznie, najczęściej jednak z obsługą operatorską. W artykule autorzy pokazują, jak można, wykorzystując najnowsze rozwiązania techniczne, w postaci zrobotyzowanych modułów dostawianych do maszyny i stosunkowo niewielkim kosztem, zautomatyzować przepływ przedmiotów w obrabiarkach zainstalowanych w zakładzie.

EN

At present there are many middle and small enterprises in Poland, where are modern CNC machine tools in use, in most cases manualy opereted. In the paper, the authors show how to automate flow of workpieces in machine tools installed in the plant, using the latest technology in form of robotic cells adapted to the machine, at relatively low costs.

2

Central and local (enteric) action of orexins

61%

Korczynski W. , Ceregrzyn M. , Matyjek R. , Kato I. , Kuwahara A. , Wolinski J. , Zabielski R.

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nr 6

17-42

EN

Orexin-A (OXA, hyprocretin-1) and orexin-B (OXB, hypocretin-2) are peptides derived from the same 130 amino acid long precursor (prepro-orexin) that bind and activate two closely related orphan G protein-coupled receptors. Orexins and their receptors were first discovered in the rat brain, and soon after that in peripheral neural structures, including the vagal nerve and enteric nervous system, and in other structures involving the gastrointestinal tract diffuse neuroendocrine system, pancreas tissue, stomach and intestinal mucosa. Orexins and their receptors were also demonstrated in the testes, adrenals, kidneys and placenta. This review is focused on central and enteric actions. Originally, orexins were considered to be neurotransmitters that centrally stimulate food intake in animals and humans, but it soon became evident that their action is broader due to activation of a large number of neuronal pathways involved in energy homeostasis, sleep-awake behavior, nociception, reward seeking, food and drug addiction, as well as reproduction, cardiovascular and adrenal function. In the gastrointestinal tract, orexins have been found so far to affect gastrointestinal motility and gastric, intestinal and pancreatic secretions. The effects were observed following central (intraventricular) or local (intraluminal, intraarterial), but not peripheral (intravenous), administrations of orexins. Since the expression of orexins in the gastrointestinal tract is enhanced during fasting, and fasting reveals many of the orexin gastrointestinal effects, it seems probable that on the local level, orexins keep the gastrointestinal tract functions ready during fasting and play a role in brain-gut axis control.

3

Wplyw warunkow tostowania sruty i ogrzewania odtluszczonego wytloku rzepakowego na wartosc pokarmowa bialka oceniana na podstawie wskaznikow in vitro i in vivo.

51%

Pastuszewska B. , Dakowski P. , Jablecki G. , Buraczewska L. , Ochtabinska A. , Swiech E. , Matyjek R. , Taciak M.

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tom 22

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nr 1

241-246

4

Pancreatic secretion differs according to the genotype of growing pigs

51%

Laubitz D. , Jankowska A. , Nieminuszczy J. , Wrzesinski M. , Jaworski A. , Romanowicz K. , Matyjek R. , Grzesiuk E. , Zebrowska T. , Zabielski R.

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nr 4

EN

The objective of this study was to investigate the secretion of pancreatic enzymes and antibacterial activity in weaned pigs of three pure breeds, Pietrain, Duroc and Polish synthetic line 990, to look for eventual differences related to the genotype. Six male pigs of each breed, about 24 kg mean body weight, were equipped with chronic pancreatic duct catheters and duodenal cannulas to assess pure pancreatic juice, and jugular vein catheters for blood withdrawal. Pancreatic juice was collected before and after the morning feeding. Protein output and enzyme activities revealed two distinct profiles: strong manifestation of the prandial phase in Pietrain and line 990 pigs, and weak manifestation in Duroc. The antibacterial activity did not follow the enzyme kinetics, and it was the strongest in pancreatic juice from Pietrain pigs. Postprandial insulinaemia was reduced in the order of: line 990>Pietrain>Duroc. A slight (not significant) tendency towards a reduction of leptin after feeding in synthetic line 990 corresponded with elevated secretion of pancreatic enzymes and plasma insulin. The presented results suggest that the prandial secretion of pancreatic juice differs according to genotype, and the differences may be in part related to release of insulin.