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J Gasiorek

Publications and source records attributed to J Gasiorek.

11 recordsLinked to original sources
PubMed1996

[Language tests for the examination of nasal resonance].

A set of 7 word tests with different number of nasal phonemes was prepared. These tests are adjusted to technical possibilities of nasal resonance examination by means of own construction apparatus. The VII-th test consisting only oral speech sounds appeared to be most important for estimating physiological nasal resonance characteristic for the Polish language and gave individual timbre of the voice. For Polish language these resonance rate is 15.2%. It is useful as reference data to evaluate patients with pathological nasal resonance. The VII-th test together with the V-th one which contain 6.3% of nasal consonants, and the VI-th with 33.3% of them were used for detailed evaluation of nasal resonance.

Child↗
PubMed1976

Influence of the concentration of phosphorus, potassium, calcium and iron compounds on the microbial reduction of sulphates.

In the reduction process of sulphates by Desulfovibrio desulfuricans suitable concentration of mineral salts plays an important role. In particular, different K2HPO4, CaCl2 and Fe(NH4)2(SO4)2 content in the reaction medium has an observable effect on the reduction degree (x'), the induction time (t0) and the reduction rate constant (k). These data were recorded for 9 liquid media characterized by different content of mineral salts. The reaction rate constants were calculated for the reduction process in each medium. Optimal reduction conditions exists at the following element concentration ratios: P/S=0.068, K/S=0.086, Fe/S=0.08, N/S=0.33, C/S=1.80, Ca/S=0.03, Cl/S=0.80.

Calcium↗
PubMed1975

Effect of the concentration of nitrogen compounds on microbial reduction of sulphates.

A change of the N/S ratio in the reaction medium affects the degree of the microbial reduction of sulphates to sulphides (x'). The time interval between the initial and the log phase of the process (t0) also varies, depending on the N/S ratio. It was demonstrated that optimal reduction conditions by the studied strain of Desulfovibrio desulphuricans exist in media of N/S=0.33.

Desulfovibrio↗
PubMed1975

Effect of the concentration of available carbon compounds on the microbial reduction of sulphates.

A change of the concentration of available carbon compounds in the reaction medium affecting the carbon to sulphur ratio (C/S) affects the reduction degree of sulphates. The time interval between the initial and the log phase of the process (to) also varies depending on the concentration of carbon compounds. It was demonstrated that optimal reduction conditions for the strain Desulfovibrio desulphuricans used exist in media of C/S = 1.84 +/- 0.2. Kinetic data for the reduction process are presented.

Carbon↗