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Wyszukujesz frazę "Ratajczak, Jan." wg kryterium: Autor


Wyświetlanie 1-5 z 5
Tytuł:
Wyniki rehabilitacji głosu i mowy po wszczepieniu wentylowych protez głosowych u chorych po całkowitym usunięciu krtani
Autorzy:
Ratajczak, Jan
Wojdas, Andrzej
Jurkiewicz, Dariusz
Powiązania:
https://bibliotekanauki.pl/articles/1398776.pdf
Data publikacji:
2008
Wydawca:
Index Copernicus International
Tematy:
rak krtani
całkowite usunięcie krtani
proteza głosowa
rehabilitacja głosu
Opis:
Ill applying with extensive infiltration of new-growth within of larynx will demand radical therapeutic procedure, which is operation completely removals of organ. Aim of work was estimation of voice and speeches ill with vocal fi stula in comparison with oesophageal voice and speech and with physiological. With research one embraced 81 men in age 42–75 of years. Group I – 32 ill with cancer of larynx, to which executed total laryngectomy and placed the voice prosthesis Provox 2. Group II – 30 ill after operation total removals of larynx, whiches used oesophageal speech. The control group III – 19 persons with physiological voice. Research one began from subjective estimation of replacement voices. Then one executed measurements maximum phonation time of vowel „a”. To objective estimation of voice one used polish programme „IRIS”. One compared: maximum intensities of voices for colloquial speech, F0, Jitter, Shimmer and NHR. In subjective estimation voice of the patients with voice prostheses was greater freedom of production and voice of the patients with voice prostheses appeared to be more loud in relation to oesophageal voice. Greatest statistical essential differences one obtained between maximum phonation times of vowels „a” where clearly is visible, that values obtained for voices of the patients with voice prostheses are to nearer values for physiological voices. Obtained averages values of acoustic analysis: F0, Jitter, Shimmer and NHR did not show statistical of essential differences between voices supplementary, though parameters of voice of the patients with voice prostheses one was to nearer parameters of physiological voice. Characterization perceptive and acoustic speech of the patients with voice prostheses in comparison with oesophageal speech is to nearer characterization of physiological speech. Lack of satisfactory effects of rehabilitation of oesophageal speech, should be effective secondary implantation vocal prosthesis.
Źródło:
Polish Journal of Otolaryngology; 2008, 62, 6; 727-730
0030-6657
2300-8423
Pojawia się w:
Polish Journal of Otolaryngology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rola czynników psychologicznych w patogenezie zaburzeń głosu spowodowanych guzkami głosowymi
Autorzy:
Ratajczak, Jan
Grzywacz, Krzysztof
Wojdas, Andrzej
Rapiejko, Piotr
Jurkiewicz, Dariusz
Powiązania:
https://bibliotekanauki.pl/articles/1398749.pdf
Data publikacji:
2008
Wydawca:
Index Copernicus International
Tematy:
zaburzenia głosu
chrypka
struny głosowe
temperament
osobowość
Opis:
Introduction. Hoarseness is most frequent complaint notified by ill in phoniatric outpatient clinics. Looking of causes notified of disturbances of voice often we ascertain in larynx existence of vocal nodules. Changes these come into being in consequence of excessive or irregular phonations. Single incident of disturbances of voice caused with oedema changes nascent of in consequence of inappropriate work with voice does not wake of our trouble, instead returns this of type of complaint provoke to other researches coexisting of etiological factors this diseases. Aim. Estimation of influence of individual personality trait of ill on formation of vocal nodules. Material and methods. One examined 20 patients with vocal nodules classified to treatments operating and 20 without disturbances of voice. All patients were subjected to otolaryngological and stroboscopic examinations. Character created of voice one examined at help of scale GRBAS, instead influence of disturbances of voice on quality of life ill at help of test VHI. Psychological examinations one executed using questionnaire State-Trait-Anxiety-Inventory( STAI), questionnaire NEO-FFI and questionnaire of aggression Buss-Perry. Results. Obtained results showed, that persons with returning vocal nodules, both during of research as in different situations everyday lives characterizes with higher level of fear and have greater inclination to worry oneself. Ill from groups examined in greater degree are extroverts, show greater activity and more are contagious socially in comparison to persons of comparative group. Attitude this in situations extorting rivalry will be able to be ruthless, are well organized guided, scrupulous and consistently endeavour to aim. Conclusions. Wanting efficiently to treat persons with returning vocal nodules we should subject to ill psychological examination and in once of ascertainment of irregularity to correct it, what at simultaneous correct treatment of organic changes should diminish frequency or to eliminate returns of disease. Skill psychological looks on patient by therapists treating disturbances of voice and speeches in case not large emotional instabilities probably would be able to improve results of treatment ill not only with functional disturbances of voice but also with disturbances of voice caused with organic changes in larynx.
Źródło:
Polish Journal of Otolaryngology; 2008, 62, 6; 758-763
0030-6657
2300-8423
Pojawia się w:
Polish Journal of Otolaryngology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metahydrophobicity and orthohydrophilicity tested in flotation of NaCl, KCl, KPF6 in their saturated aqueous solutions
Autorzy:
Drzymala, Jan
Dubiel, Malgorzata
Ratajczak, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/109910.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
flotation
contact angle
hydrophobicity
hydrophilicity
Opis:
Flotation tests of different size fractions of NaCl, KCl and KPF6 in their saturated aqueous solutions were performed in a 36 cm in height monobubble Hallimond tube. Also contact angle tests by means of sessile drops of saturated salt solution put on pressed discs of salts were carried out. The obtained sessile drop contact angles were equal to zero, pointing to a complete hydrophilicity (orthophilicity) of the investigated salts. In the case of NaCl and KCl, their orthohydrophilicity was confirmed by flotation tests and flotometric considerations because the entrainment factors, which take into account the maximum size of entrained particles and density of the salt as well as it solution, were similar to those of quartz and magnetite and equal to 0.11 mm. The entrainment factor for KPF6  was equal to 0.18 mm and was greater than that of NaCl and KCl indicating certain natural flotation of this salt caused by some flotational hydrophobicity called in this paper metahydrophobicity. The metahydrophobicity of KPF6   was confirmed by flotation results. In the case of KPF6 the maximum yields of the same size particles were the highest, even though the density of this salt was greater than that of NaCl and KCl. Also, the first order kinetic constants were always the greatest for KPF6. Further flotometeric calculation based on the balance of forces involved in flotation indicated that the estimated contact angle of KPF6 was about 8 º assuming static flotation, and 7 º for dynamic flotation, while for NaCl and KCl was below 5 º . It means that during flotation test orthohydrophilic NaCl and KCl are only entrained while for metahydrophobic KPF6 there is mostly entrainment and some flotation.
Źródło:
Physicochemical Problems of Mineral Processing; 2019, 55, 5; 1141-1147
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A procedure of Arrhenius activation energy determination for salt flotation of particles in the vicinity of one molar salt aqueous solutions
Autorzy:
Ratajczak, Tomasz
Kurkiewicz, Szymon
Drzymala, Jan
Powiązania:
https://bibliotekanauki.pl/articles/1450643.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
activation energy
salt flotation
Arrhenius equation
Gibbs potential
Opis:
A modified Arrhenius equation, in which thermal energy is replaced with chemical (Gibbs) potential, and a special calculation procedure were used to evaluate the flotation activation energy for salt solutions in the one molar range of concentrations. The proposed formula overcomes the difficulties of calculating the salt flotation activation energy caused by mathematical problems of finding 1/(ln($c$/$c_o$)) for the standard salt concentration $C_o$ =1 M (1 kmol/m3 and when the applied salt concentration c is in the vicinity of 1 M. The salt flotation activation energy was calculated for flotation of copper-bearing carbonaceous shale in the 0.25, 0.50, 1.00 and 2.00 M NaCl solutions performed in a laboratory machine as equal to 1.9 RT for standard salt solution equal to 1 M.
Źródło:
Physicochemical Problems of Mineral Processing; 2020, 56, 6; 1-5
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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