Ograniczanie wyników

Czasopisma help
Autorzy help
Lata help
Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 105

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 6 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  localization
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 6 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Migration of enterprises - case studies

100%
The aim of this paper was to present the essence of the relocation process of companies with particular consideration of intra-national migration. The author arranged definitions and presented factors of the relocation of companies. The paper ends with case studies of the companies that entirely or partly relocated their business activity in the country. The information on migration was obtained on the basis of the conducted survey among randomly selected enterprises. Further information was collected from web pages of surveyed entities and press releases. As a result of the conducted analysis the conclusions were drawn towards the surveyed enterprises. It was observed that domestic relocation concerns both small and large enterprises dealing with manufacturing, providing services and trading. Internal migration may be conducted entirely or partly. Companies may transfer their seats or branches. The main reason for a change of localization is insufficient supply of manufacturing area. The conducted research reflect only fragment of the process of domestic relocation in order to draw the overall conclusions in this respect is indispensable to make extension at the bigger scale of enterprises.
The purpose of this study was to trace the immunoreactivity of the two calcium binding proteins, parvalbumin and calbindin D28k, in the periaqueductal gray matter of the chinchilla midbrain. The immunoreactivity of these proteins in this species has never been investigated. The localisation of the activity was examined by carrying out the peroxidase-antiperoxidase (PAP) reaction using specific antibodies against parvalbumin and calbindin D28k. Slightly different parvalbumin immunoreactivity was shown. In most neurons, with the exception of large neurons in the dorsal and dorso-lateral periaqueductal gray matter, a weak immunostaining for parvalbumin was observed. Extremely intense immunostaining for calbindin D28k occurred in all neurons in the examined area. The results obtained suggest a slightly different distribution of parvalbumin in the neurons of the periaqueductal gray matter of the midbrain of the chinchilla than in other animal species. This indicates that mainly calbindin D28k is involved in the regulation of intracellular calcium ion concentration in the periaqueductal gray matter of the chinchilla.
Changes in the activity of acid phosphatase (AcPase) in the apoplast of pea root nodule were investigated. The activity was determined using lead and cerium methods. The results indicated a following sequence of AcPase activity appearance during the development of the infection thread: 1) low AcPase activity appears in the outer part of cells of symbiotic bacteria; 2) bacteria show increased AcPase activity, and the enzyme activity appears in the thread walls; 3) activity exhibits also matrix of the infection thread; 4) bacteria just before their release from the infection threads show high AcPase activity; 5) AcPase activity ceases after bacteria transformation into bacteroids. The increase in bacterial AcPase activity may reflect a higher demand for inorganic phosphorus necessary for propagation of the bacteria within the infection threads and/or involved in bacteria release from the infection threads.
The distribution of lead in root tips of Dianthus carthusianorum was compared in populations from a zinc-lead waste heap in Bolesław near Olkusz and from a natural stand in the Botanical Garden in Lublin. The analyses were made at two developmental stages: seedlings (after 8 days of incubation in 5 mg/dm3 Pb+2 from PbCl2 in 1/8 Knop medium) and mature plants (after 23 days of incubation in 10 mg/dm3 Pb+2 from PbCl2 in 1/2 Knop medium). Histochemical methods (rhodizonate and dithizonate) of lead detection revealed significant accumulation of this metal on the root surface of the examined plants. The site of next-strongest lead accumulation in root tips of plants from both populations was in cell walls of the pericycle. The layer of meristematic pericycle cells seemed to be a strong barrier against penetration of lead to the deepest cells of the procambium. Histochemical methods and tissue sections revealed no differences in lead distribution between root tips from the waste heap and from the natural population, but differences were detected on the ultrastructural level. There were numerous lead deposits in the cytoplasm of cells from ground meristem in the natural population, and none in specimens from the waste heap, indicating that lead had a higher toxic effect on the natural population of D. carthusianorum.
The localisation of oestrogen (ER) and epidermal growth factor receptors (EGFR) in the various cell types of the bitch uterine was determined. In this study, 23 adult, healthy crossbred bitches brought to the clinic for ovariohisterectomy were used. ER and EGFR positive staining was detected in all cell types of the uterus. A distinct staining was seen in the luminal and glandular epithelium; while stromal and myometrial cells showed weak or moderate staining. The endothelial and smooth muscle cells of the vessels in the endometrium and myometrium sometimes appeared positive. No staining was observed in the mesothelium. The results of this study suggested that ER and EGFR were expressed at various levels in different cell types of bitch uterus. In light of the previous studies, and data of the presented investigations, it may be necesssary to elicit the harmonious proliferation and differentiation of epithelial and stromal cells that are considered essential for the preparation of the uterus for implantation.
 In this study immunoelectrophoretic and double immunodiffusion analyses were used to investigate the antigenic character of zinc-binding proteins (ZnBPs), whereas the indirect immunofluorescence technique was used to identify their origin in boar reproductive tract. The mmunoelectrophoretic analysis of ZnBPs of the seminal plasma resulted in the appearance of three antigenic protein complexes, while specific immunoreactivity patterns of the anti-ZnBP serum were detected by double immunodiffusion analysis. Indirect immunofluorescence technique confirmed that ZnBPs were secreted by different reproductive tract tissues, suggesting their contributions to the seminal plasma.
For the purpose of this work an epiphytic lichen species, Hypogymnia physodes (L.)Nyl., was used. Thalli of the lichen were treated with solutions of nitrate salts of heavy metals, including Zn(NO3)(2), Cu(NO3)(2), Pb(NO3)(2), and Cd(NO3)(2). To simulate the acid rain impact, pH of the metal mixture was lowered to pH 4, using Na2S2O5. Content of heavy metals was determined after a standard UV mineralization method (water solution) and burning method (in temperature 450 degreesC- thalli), using a Microcomputer Voltage-ammeter Analyser (MAW). After two months exposure of the lichen to the mixture of heavy metal nitrates it was ascertained that there was an increase of accumulation of Zn, Pb, Cu, and Cd in the thalli; a decrease of thalli pH caused increased uptake of toxic elements by the lichen; Pb and Cd remained mainly on the surface of the thalli and in the cell walls, whilst Zn and Cu penetrated to the protoplast.
Cysteine proteinases also referred to as thiol proteases play an essential role in plant growth and development but also in senescence and programmed cell death, in accumulation of storage proteins such as in seeds, but also in storage protein mobili­zation. Thus, they participate in both anabolic and catabolic processes. In addition, they are involved in signalling pathways and in the response to biotic and abiotic stresses. In this review an attempt was undertaken to illustrate these multiple roles of cysteine proteinases and the mechanisms underlying their action.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 6 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.