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1

Dibutylbutyl phosphonate as an extractant of zinc(II) from hydrochloric acid solutions

100%

Regel-Rosocka M. , Rozenblat M. , Nowaczyk R. , Wiśniewski M.

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tom Vol. 39

99-106

EN

The extraction of zinc(II) and iron(II) with solutions of dibutylbutyl phosphonate (DBBP) from hydrochloric acid solutions is studied. Iron(II is slightly extracted by the considered extractant. The isotherms of zinc(II) extraction with DBBP are compared with those for TBP. They indicate that extraction effectiveness of DBBP as an extractant is higher than for tributyl phosphate (TBP). It is found that the extraction ability of zinc(II) chlorocomplexes from hydrochloric acid solutions decreases with decreasing DBBP content. Addition of kerosene increases hydrophobicity of DBBP at the same time slightly decreasing the efficiency of zinc(II) extraction. 80 vol% DBBP is applied successfully to separate zinc(II) from iron(II) in the following stages: extraction with excess of DBBP (o/w = 5:1), scrubbing of loaded extractant with small amount of water (w/o = 1:5) to remove iron(II), stripping with water to remove zinc(II) from loaded DBBP (w/o = 1:1).

PL

Badano ekstrakcję cynku(II) oraz żelaza(II) z roztworów kwasu solnego za pomocą fosfonianu dibutylobutylu (DBBP) o różnych stężeniach. Otrzymane izotermy ekstrakcji porównano z izotermami uzyskanymi wcześniej dla fosforanu tributylu (TBP). W wyniku przeprowadzonych badań stwierdzono, że zdolność ekstrakcyjna DBBP jest większa niż TBP. Dodatek rozpuszczalnika węglowodorowego powoduje wzrost hydrofobowości DBBP, a nie zmniejsza w znaczący sposób wydajności ekstrakcji cynku(II). 80% DBBP zastosowano z powodzeniem do oddzielenia cynku(II) od żelaza(II) w procesie składającym się z następujących etapów: ekstrakcja cynku(II) nadmiarem DBBP (o/w = 5:1), odmycie z naładowanej fazy organicznej źelaza(II) małą ilością wody (w/o =s 1:5), reekstrakcja cynku(II) z DBBP wodą (w/o =1:1).

2

Parallel manifestation of various types of tumours in canine testes

100%

Nowaczyk R. , Nowak M. , Madej J. P.

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nr 3

3

Syndrom krwotoczny cieląt - opis przypadku

88%

Bednarski M. , Houszka M. , Hamala J. , Nowaczyk R. , Piasecki T.

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nr 04

EN

Hemorrhagic diathesis in neonatal calves is a new and emerging disease of young calves. The disease affects calves aged less than 4 weeks. Clinical signs in calves include skin and intestinal bleeding as well as petechiae on all mucosal membranes. The cause of this syndrome is as of yet unknown. In this study, to the best of our knowledge, the authors demonstrated the first case of hemorrhagic diathesis in neonatal calves with hematological and histopathological diagnosis. Clinical examinations demonstrated cutaneous bleeding. Hematological examination showed thrombocytopenia (43.7 × 10⁹/L) and pancytopenia (1.47 × 10⁹/L). During necropsy multiple generalized petechiae, ecchymoses or hemorrhages were ascertained. Histopathology revealed a multifocal extravasation of red blood cells (hemorrhage). Severe loss of hematopoietic tissue of the bone marrow was the most prominent finding on histology. The BVD antigen test was negative.

4

Histological, histochemical and fine structure studies of the lacrimal gland and superficial gland of the third eyelid and their significance on the proper function of the eyeball in alpaca (Vicugna pacos)

88%

Kleckowska-Nawrot J. , Nowaczyk R. , Gozdziewska-Harlajczuk K. , Krasucki K. , Janeczek M.

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nr 2

EN

The lacrimal gland (LG) and superficial gland of the third eyelid (SGTE) belong to accessory organs of the eye. The aim of the present studies was to evaluate the histological, histochemical and fine structure of the LG and SGTE obtained from 3 adult females and 2 adult males of alpaca (Vicugna pacos). The LG was situated in the dorsolateral angle of the orbit between the dorsal rectus and the lateral rectus muscles. The SGTE was located between the medial rectus muscle, the ventral rectus muscle and was partially covered by the ventral oblique muscle of the eyeball. There were no effect of gender on the morphometry of examined LG and SGTE. The third eyelid resembles an anchor in shape. During histological and ultrastructural analyses using light and transmission electron microscopy, it was established that the LG and SGTE are tubulo-acinar glands with mucoserous characters. The LG contains either lymphocytes or plasma cells, while SGTE had rare plasma cells and numerous lymphocytes in connective tissue. The cartilage of the third eyelid was composed of hyaline tissue. Numerous aggregations of lymphocytes as lymph nodules in bulbar surface of the third eyelid were observed. The LG and SGTE secretory cells exhibited a similar ultrastructure appearance in electron microscopic examination, with secretory cells tightly filled with intracytoplasmatic secretory granules and numerous clusters of mucus of different sizes which were observed in the peripheral cells compartment. (Folia Morphol 2015; 74, 2: 195–205)

5

Metastasis of mammary carcinoma to myocardium in a dog: clinical and morphological correlation

88%

Nowak M. , Noszczyk-Nowak A. , Slawuta P. , Nowaczyk R. , Polanska J.

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nr 2

EN

A case of a widespread neoplastic process, originating from the mammary gland in mongrel bitch, weighing 27 kg and aging 7 years, was described. In the patient, blood morphology, blood biochemical parameters, gasometry of arterial blood, chest X-ray, and heart ECG and USG were determined. ECG record demonstrated elevation of ST-T segment by 0.2-0.3 mV in I, aVL leads and a downward- sloping depression in III and aVR leads. The alterations pointed with high probability to infarction in the lateral wall of the left ventricle. Following demonstration by imaging tests of numerous tumours in the chest, the dog was subjected to euthanasia. Upon autopsy, apart from the primary tumour in the mammary gland, numerous tumours were demonstrated in inner organs, including myocardium. Histopathology confirmed neoplastic growth of adenocarcinoma type. In the vicinity of the tumour localised in the left cardiac ventricle, microscopic examination disclosed regions of cardiomyocyte necrosis, which corroborated the preliminary diagnosis of infarction.

6

Prostaglandin-mediated effects in early canine corpus luteum: In vivo effects on vascular and immune factors

75%

Pereira M. T. , Gram A. , Nowaczyk R. , Boos A. , Hoffmann B. , Janowski T. , Kowalewski M. P.

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nr 1