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On adsorption of water vapor on silica gel

100%
Gwadera M., Kupiec K., Marszałek A.
Czasopismo Techniczne
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-
PL
The aim of this work is to present the results of studies on heat and mass transfer in an adsorber, which is the main part of an adsorption chiller. The paper refers to adsorption of water vapor on silica gel grains. Adsorbent grains were coated on the outer surface of a copper pipe. The influence of grains diameter and flow rate of the gas phase on process intensity was considered.
2
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An unusual case of a tuberculous granuloma of the liver presenting thirteen years after intravesical BCG – therapy for bladder cancer

88%
Szczęsny W., Szylberg Ł., Słupski M., Marszałek A., Szmytkowski J.
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vol. 93
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issue 5
1-5
EN
The authors present the case of a female patient with a tumor of segment VII of the liver, which was postoperatively identified as a tuberculous granuloma. The patient was admitted for elective surgery for a liver tumor, which had been diagnosed a few months before. Computed tomography and nuclear magnetic resonance were performed, based on which focal nodular hyperplasia was suspected. Thirteen years prior to admission the patient had undergone a transurethral resection of superficial bladder carcinoma, followed by adjuvant intravesical Bacillus Calmette-Guérin (BCG-therapy). Upon surgery, segment VII of the liver was resected; postoperative course was uneventful. After the identification of granuloma, the patient was referred to a phthysiatric clinic for further diagnostics and treatment. The authors have deemed this case worthy of reporting primarily due to the exceptionally long period between the completion of BCG therapy and the onset of hepatic tumor.
3
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Searching for association of the CAG repeat polymorphism in the mitochondrial DNA polymerase gamma gene (POLG) with colorectal cancer

88%
Linkowska K., Jawień A., Marszałek A., Skonieczna K., Grzybowski T.
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2015
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vol. 62
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issue 3
625-627
EN
Mitochondrial DNA polymerase gamma (POLG) is the only DNA polymerase involved in maintaining the mitochondrial genome. Recent studies demonstrated an association of CAG repeat polymorphism in the second exon of POLG gene with the risk of cancer. We investigated the CAG repeat variability in the POLG gene in tumor and non-tumor tissues from colorectal cancer patients and in DNA samples isolated from blood obtained from age-matched healthy persons. Somatically occuring CAG-repeat alterations in cancer tissues have been observed in 10% of patients, but no association has been found between the CAG repeat variants in the POLG gene and colorectal cancer risk.
4
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Changes of the expression of insulin-like growth factor 1 and its two receptors in the periphery of the developing lung are parallel to ultrastructural capillary changes during perinatal period

76%
Marszałek A., Biczysko W., Daa T., Kaczmarek E., Wąsowicz M., Yokoyama S.
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EN
Insulin-like growth factor type 1 (IGF-1) belongs to the peptide hormones which regulate cell proliferation and differentiation as well as angiogenesis. The aim of the present study was the quantitative evaluation of immuohistochemical (IH) expression of IGF-1 and its two receptors (IGF-1Rα and IGF-1Rβ) parallel to changes of capillary lumen/whole capillary area (L/W) ratio during the perinatal period. Tissue samples from lungs from 19-, and 21-day fetuses as well as 1-, 3-, 5-day old newborns were processed for frozen sections that were used for IH staining and then used for quantitative analysis of antigens expression. In parallel, tissue samples were processed for transmission electron microscopy and used for capillaries morphometry. Our results were statistically evaluated. We found that the expression of IGF-1 in the peripheral part of the developing lung has a peak at the moment of birth when changes of vascular structure were reflected by L/W ratio. This is followed by the peak expression of the IGF-1Rα, but not of the IGF-1Rβ.
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