Wyniki wyszukiwania - Biblioteka Nauki

1

The infuence of scattering effect on generated radiation of microchips

100%

Ciosek J.

|

tom Vol. 31, No. 3/4

431-434

EN

Questions of scattring effect by rough surfaces stay a foreground problems on optics in view of thier prevelance. The problem of definition of critical or satisfactory state of optical surface is siginificant especially for active optical elements, generating coherent radiation. This problem occurs extreme with used microlasers with the thickness of decimal parts of millimetre. An Nd: fluorophosphate glass (LG800) have been used as active laser media. Presented results enable the qualification of critical surface condition of microlaser.

2

Poziom generacji promieniowania mikrolasera w warunkach rozpraszania powierzchniowego czół

100%

Ciosek J.

|

tom Vol. 47, nr 4

81-89

PL

Przedstawiono wyniki badań wpływu stanu powierzchni czół mikrolaserów na jakość generowanego promieniowania. Porównywane są próbki szkła fluorofosforowego o jednakowej koncentracji domieszkowanego nedymu oraz jednakowych wymiarach fizycznych. Na czoła próbek o różnym stopniu chropowatości powierzchni naniesione zostały powłoki interferencyjne o charakterystykach spektralnych odpowiednich dla mikrolaserów. Próbki zbadano w układzie diodowego pompowania optycznego w celu porównania wiązek generowanego promieniowania w zależności od stanu czół mikrolaserów.

EN

The study presents the results of front-surface state of microchips on the quality of generated radiation. The samples of fluorofosphate glass neodymium doped are compared. Samples had the same dimension and concentration of neodymium. The surfaces with different roughness have been coated likemicrochips. The samples were investigated with diode pumped system to compare generated beams for different states of microchips surfaces.

3

Thyrotropin-releasing hormone modulates vasopressin and oxytocin synthesis and release from the hypothalamo-neurohypophysial system of different age male rats

63%

Ciosek J. , Izdebska K.

|

nr 2

63-70

EN

Thyrotropin-releasing hormone (TRH) is engaged in the modulation of the hypothalamo-neurohypophysial system activity. Effects of repeated intravenously injections of TRH in a dose of 100 ng/100 g b.w. on vasopressin (VP) and oxytocin (OT) biosynthesis and release from the hypothalamo-neurohypophysial system was investigated in rats in different age (1-, 3- or 7-months of the life). To estimate the biosynthesis rate of both neurohormones the colchicine procedure was used (the dose of 5 µg/5 µl icv 20 hours before the decapitation). It has been observed that vasopressin synthesis in the hypothalamus increased gradually with maturation of rats, while OT biosynthesis decreased in the same animals. Hypothalamic biosynthesis rate of VP and OT is most effective in youngest rats and declines during the adolescence of animals. Thyrotropin-releasing hormone directly affects VP-ergic and OT-ergic hypothalamic neurons activity and both neurohormones biosynthesis process. This effect, however, is opposed: TRH acts as a stimulator of vasopressin biosynthesis most of all in young male rats and as an inhibitor for oxytocin biosynthesis especially in mature animals.

4

Thyroliberin (TRH) and release of vasopressin and oxytocin from the rat hypothalamo-neurohypophysial explants in vitro

63%

Ciosek J. , Stempniak B.

|

nr 5

5

Centrally administered galanin modifies vasopressin and oxytocin release from the hypothalamo-neurohypophysial system of euhydrated and dehydrated rats

63%

Ciosek J. , Cisowska A.

|

nr 4

EN

Galanin (Gal) as a neuropeptide with widespread distribution in the central nervous system may be involved in the mechanisms of vasopressin (AVP) and oxytocin (OT) release from the hypothalamo-neurohypophysial system. Vasopressin and oxytocin content in the hypothalamus and neurohypophysis as well as plasma level of both neurohormones were studied after galanin treatment in euhydrated and dehydrated rats. In not dehydrated rats intracerebroventricular (i.c.v.) injections of Gal did not affect the hypothalamic and neurohypophysial OT content, however, distinctly increased plasma OT concentration. In the same animals Gal diminished the hypothalamic AVP content but was without the effect on neurohypophysial AVP storage; plasma AVP level then raised. Galanin, administered i.c.v. to rats deprived of water, distinctly inhibited AVP and OT release from the hypothalamo-neurohypophysial system. Simultaneously, plasma AVP and OT level was significantly diminished after Gal treatment in dehydrated rats. These results suggest that modulatory effect of galanin on vasopressin and oxytocin release depends on the actual state of water metabolism. Gal acts as an inhibitory neuromodulator of AVP and OT secretion under conditions of the dehydration but stimulates this process in the state of equilibrated water metabolism.

6

Thyrotropin-releasing hormone affects the oxytocin, vasopressin and prolactin release in female rats during midlactation: relation to suckling

63%

Ciosek J. , Guzek J. W.

|

nr 1

7

Thyrotropin-releasing hormone [TRH] modifies oxytocin release from the hypothalamo-neurohypophysial system in salt-loaded rats

63%

Ciosek J. , Stempniak B.

|

1995

|

tom 46

|

nr 2

8

The relase of neurohypophysial hormones as influenced by stimulation of alpha-adrenergic transmission in long- term dehydrated male white rats. Information 1: hypothalamic and neurohypophysial vasopressor activity

51%

Guzek J. W. , Ciosek J. , Janus J.

|

nr 2

9

The relase of neurohypophysial hormones as influenced by stimulation of alpha-adrenergic transmission in long- term dehydrated male white rats. Information 2: hypothalamic and neurohypophysial oxytocic activity

51%

Guzek J. W. , Janus J. , Ciosek J.

|

nr 2

10

Galanin affects vasopressin and oxytocin release from the hypothalamo-neurohypophysial system in haemorrhaged rats

51%

Ciosek J. , Cisowska A. , Dabrowski R.

|

nr 2

EN

The effect of centrally administered galanin (Gal; 100 pM i.c.v.) on the hypothalamo-neurohypophysial storage as well as blood plasma level of vasopressin and oxytocin was estimated in haemorrhaged (1 ml per 100 g b.w.) male Wistar rats. Gal i.c.v. treatment did not alter vasopressin and oxytocin content both in the hypothalamus and neurohypophysis as well as their concentration in blood plasma of not haemorrhaged rats. Haemorrhage decreased the hypothalamic and neurohypophysial vasopressin and oxytocin storage but increased the neurohormones plasma level in animals injected with vehicle solution. During the haemorrhage, the increase in plasma vasopressin and oxytocin was inhibited in rats previously treated i.c.v. with galanin. The hypothalamic and neurohypophysial vasopressin as well as oxytocin content significantly increased in animals treated with galanin and subsequently haemorrhaged. These results suggest that galanin may have a regulatory role in the hypothalamo-neurohypophysial function especially under condition of hypovolemia.

11

Ołów niskoaktywny jako osłona detektorów we współczesnej fizyce.

45%

Wójcik M. , Bednarek A. , Ciosek J. , Okoń L. , Karwań T.

|

1999

|

tom R. 44, nr 8-9

397-402

PL

Porównano własności różnych metali, które mogłyby być wykorzystane do budowy osłon przed promieniowaniem gamma współczesnych detektorów używanych przez fizyków i astrofizyków. Pokazano, iż najlepszym materiałem do tego celu jest ołów. Posiada on dużą gęstość, dużą liczbę porządkową, wytwarzanie w nim izotopów promieniotwórczych przez neutrony, jak i promieniowanie kosmiczne jest mało prawdopodobne. Problemem jest natomiast obecność izotopów promieniotwórczych we współcześnie produkowanym ołowiu. Przedstawiono wyniki pomiarów aktywności właściwej polskiego, specjalnie produkowanego ołowiu niskoaktywnego i porównano je z aktywnościami innych produktów tego typu dostępnych na rynku.

EN

The authors compare the qualities of several metals, which may be used for construction of shields against the gamma-radiation for contemporary detectors used by physicists and astro-physicists. Lead is shown to be the best material for this purpose. It has high density, high ordinal number, the creation of radioactive isotopes inside, by neutrons and by cosmic radiation is little probable. But the problem is the presence of radioactive isotops in contemporary produced lead. The results of measurement of the specific activity of the Polish low active lead specially produced are presented and the results are compared with the activities of other commercially available products of that type.

12

Opracowanie technologii przerobu zgarów z procesu rafinacji ołowiu w Krótkim Piecu Obrotowym opalanym palnikiem typu gaz ziemny-tlen.

38%

Kapias P. , Bednarek A. , Ciosek J. , Brzezina E. , Wójcik S. , Pelka E. , Szkutnik L.

|

1999

|

tom R. 44, nr 8-9

391-397

PL

Przedstawiono wyniki prac prowadzonych w HMN SZOPIENICE S.A. w kierunku nadania żużlom pochodzącym z procesu przerobu półproduktów procesu rafinacji ołowiu, postaci nadającej się do zastosowań przemysłowych lub bezpiecznego składowania. Badania prowadzono w skali przemysłowej w Krótkim Piecu Obrotowym przy wykorzystaniu instalacji pilotowej złożonej z systemu zgazowania tlenu oraz palnika typu tlen-gaz. W ramach prowadzonych badań testowano możliwość zastosowania nowych technologii przerobu wszystkich półproduktów procesu rafinacji ołowiu. Prezentowane są wyniki badań uzyskane w zakresie przerobu alkalicznych zgarów pochodzących z rafinacji końcowej ołowiu przy zastosowaniu nowego zestawu topników. Topniki dobrano w taki sposób, aby otrzymać tzw. żużel szklisty charakteryzujący się niskim stopniem wymywalności metali ciężkich. Na podstawie uzyskanych wyników można stwierdzić, że w stosowanych warunkach możliwe było otrzymywanie żużli szklistych zawierających ok. 0,5 % Pb i ok. 0,5 % Sb. Testy wymywalności przeprowadzone dla otrzymanych żużli wykazują, że jedynie poziom zawartości jonów Pb w roztworze, średnio biorąc, balansuje na granicy stężeń dopuszczalnych, natomiast dla pozostałych jonów jest znacznie niższy od przewidzianego normą.

EN

The authors present the results of the work which is conducted in HMN SZOPIENICE SA, for giving to the slag, from processing the intermediate products from rafination of lead, the form suitable for industrial application or for safe storage. The investigations were conducted in commercial scale, in a Short Rotary Furnace, making use of a pilot installation consisting of a gasmixer for oxygen and a burner of the oxygengas type. The applicability of new technologies for working all the intermediate products from the process of rafination of lead was tested within the investigations. The results gained in processing of the alkaline melting losses of the final rafining of lead, at application of a new set of fluxes, are presented. The fluxes were selected for getting a vitreous slag, characterized by a low degree of elution of heavy metals. It may be stated, on the basis of the obtained results, that, under applied conditions, it is possible winning of vitreous slags containing about 0,5 % Pb and about 0,5 % Sb. The tests of elution, made for the got slags, show that only the content of Pb in solution oscillates on the limit of the admitted concentrations, whereas the concentration of the other ions is considerably lower.

13

The assessment of serum and diagnostic peritoneal lavage concentration of matrix metalloproteinase-2, matrix metalloproteinase-9, carbohydrate antigen 19-9, and carcinoembryonic antigen in patients with pancreatic cancer and chronic pancreatitis

38%

Dranka-Bojarowska D. , Lewinski A. , Lekstan A. , Gajda M. , Ciosek J. , Mrowiec S.

|

nr 5

14

Experimental hypothyroidism increases content of collagen and glycosaminoglycans in the heart

32%

Drobnik J. , Ciosek J. , Slotwinska D. , Stempniak B. , Zukowska D. , Marczynski A. , Tosik D. , Bartel H. , Dabrowski R. , Szczepanowska A.

|

2009

|

tom 60

|

nr 3

57-62

EN

The connective tissue matrix of the heart remains under regulatory influence of the thyroid hormones. Some conflicting data describe the connective tissue changes in subjects with thyroid gland disorders. The aim of the study was to assess the changes of the connective tissue accumulation in the heart of rats in the state of hypothyroidism and to answer the question whether TSH is involved in mechanism of the observed phenomena. Hypothyroidism in rats was induced by methylotiouracil treatment or by thyreoidectomy. The thyroid hormones [freeT3 (fT3), freeT4 (fT4)] and pituitary TSH were measured in plasma with radioimmunological method. The glycosaminoglycans (GAG) and total collagen were measured in heart muscle of both left and right ventricles. Cells from the rat’s heart were isolated and cultured. The cells were identified as myofibroblasts by electron microscopy method. The effects of TSH in concentrations ranging from 0.002 to 20 mIU/ml, on connective tissue accumulation in heart myofibroblasts cultures were tested. The primary hypothyroidism was developed both in groups with thyroidectomy and with methylthiouracil. The levels of fT3 and fT4 both in rats with thyreoidectomy and animals treated with methylthiouracil were decreased and TSH level in these two experimental groups was elevated. In the heart of the rats with experimental hypothyroidism increased content of both GAG and collagen was found. Myofibroblast number in culture was increased by TSH. Regardless of the method of its induction, hypothyroidism increased collagen and GAG contents in the heart. TSH is not involved in regulation of collagen and glycosaminoglycans accumulation in the heart of rats affected with primary hypothyroidism.

15

Melatonin-induced glycosaminoglycans augmentation in myocardium remote to infarction

32%

Drobnik J. , Tosik D. , Piera L. , Szczepanowska A. , Olczak S. , Zielinska A. , Liberski P. P. , Ciosek J.

|

tom 64

|

nr 6