Wyniki wyszukiwania - BazTech

1

Investigations of hydroxyapatite crystals in oral care products using the TEM method

Pajchel Ł., Malicka A., Pajchel A., German R., Kolodzijski W.

Engineering of Biomaterials

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2018

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Vol. 21, no. 148

42

2

Analiza środowiska pobytu pacjenta w obiekcie szpitalnym

Malicka A

Zeszyty Naukowe Politechniki Poznańskiej. Architektura i Urbanistyka

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2012

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Z. 28

81--96

PL

W funkcjonowaniu nowoczesnych obiektów szpitalnych na świecie zachodzą ogromne zmiany, mające na celu lepszą i sprawniejszą obsługę pacjentów. Zmiany organizacyjne są odzwierciedlone w sposobie projektowania i budowania nowych szpitali jako obiektów przyjaznych, otwartych, pełnych słońca i zieleni. W artykule przeanalizowano przestrzeń, w której porusza się pacjent w budynku szpitalnym (od chwili wejścia do budynku do czasu jego opuszczenia) oraz adekwatnie do potrzeb pacjenta wskazano elementy architektoniczno-budowlane i funkcjonalne, tworzące optymalne warunki pobytu.

EN

The way modern hospital facilities in the world function is changing, as they are expected to provide better and more efficient service to patients. Organizational changes are reflected in the way hospital facilities are designed and constructed to make them friendly, open, full of sunshine and greenery. The article analyses the space in which patients move while their stay in a hospital facility (from the moment they enter until they leave the premises). Adequately to the patient's needs, it also focuses on the architectonic, constructing and functional elements which make the conditions of hospital stay optimal.

3

The effect of kaolin modification of silane coupling agents on the properties of the polyethylene composites

Domka L., Malicka A., Stachowiak N.

Polish Journal of Chemical Technology

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2008

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Vol. 10, nr 2

5-10

EN

This paper shows the results of using the modified kaolin by silane coupling agents in HDPE composite and the effect of surface modifications of fillers on the properties of polyethylene composites. In the first stage pure and modified kaolin was subjected to a number of tests in order to determine the backfill density, water and paraffin oil absorbability, the surface area and pore volume, the morphology of their grains, thermal analysis and the FT-IR spectroscopy. In the second stage the composites, which were moulded into the samples that could be subjected to further tests, were produced. The samples were characterised by the determination of the hardness according to Shore, the elasticity modulus, the tensile strength and tearing strength. The modification of the kaolin surface has resulted in a substantial improvement of the strength parameters of the obtained polyethylene composites.

4

Otrzymywanie i analiza fizykochemiczna krzemianów warstwowych modyfikowanych związkami proadhezyjnymi z grupy silanów

Kozak M., Domka L., Malicka A.

Przemysł Chemiczny

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2006

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T. 85, nr 8-9

844-846

PL

W ramach prezentowanych badań zmodyfikowano naturalny bentonit sodowy (Specjal) oraz syntetyczny montmorylonit sodowy przy pomocy środków proadhezyjnych z grupy silanów (3chloropropylotrimetoksysilan, 3-metakryloksypropylotrimetoksysilan). Stopień modyfikacji powierzchni określono przy pomocy dyfrakcji promieniowania rentgenowskiego (XRD) oraz analizy termicznej (TG, DTG). W badaniach XRD zaobserwowano niewielkie zmiany profili dyfrakcyjnych, natomiast na termogramach DTG zmodyfikowanych silanami glinokrzemianów zaobserwowano w temp. 400–420°C maksima odpowiadające rozkładowi czynnika proadhezyjnego. Przy pomocy skaningowej mikroskopii elektronowej (SEM) scharakteryzowano również morfologię cząstek przed i po modyfikacji.

EN

Natural Na bentonite contg. 65% montmorillonite and synthetic Na montmorillonite were mixed 2 hrs. in aq. 50% EtOH with 2 wt. parts of 3-chloropropyl (I) or 3-methacryloxypropyl trimethoxysilane (II). The av. particle size of modified montmorillonite was 10–15 ìm vs. the 10 in the original. The II-modified bentonite had particles up to 60 ìm. The interlayer distance in Na montmorillonite was changed by I only slightly, 1.244 vs. 1.265 nm, and likewise in bentonite, regardless of the coupler type. Up to 1000°C, wt. loss was 1%. In I- or II-modified montmorillonite, the loss was 2.8 and 4.7% and the DTG peaks at 390–460 and 345–465°C, resp., were attributed to the decompg. silanes. Only the silane surface was affected and penetration of silane mols. into the interlayer space was insignificant.

5

Eksperymentalne metody wyznaczania tzw. pól martwych w ślimaku ucha wewnętrznego

Skrodzka E., Malicka A., Sęk A.

Prace Naukowe Instytutu Telekomunikacji i Akustyki Politechniki Wrocławskiej. Konferencje

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2001

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Vol. 83, nr 27

97-102

EN

Hearing impairment is often associated with damage to the hair cells in the cochlea. Complete loss of inner hair cells over a certain region of the cochlea is called a "dead region". This region can be defined in terms of the range of characteristic frequencies of the inner hair cells and/or neurons immediately adjacent to the dead region. It is difficult to diagnose dead regions taking into account audiograms only. Up to now two different methods of dead regions diagnosis have been developed: measurements of psychophysical tuning curves (PTCs) (time consuming but very accurate) and the threshold-equalising noise (TEN) method (fast but sometimes giving ambiguous results). A third method, which measures PTCs by means of a noise band whose central frequency changes gradually over a certain region, is proposed in this paper. The method is a compromise between PTCs and TEN method. The method is as fast as the TEN method is and is almost as accurate as PTCs.