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Biomedical subjects

M Lukomski

Publications and source records attributed to M Lukomski.

At least 19 recordsLinked to original sources
PubMed2002

Laser excitation spectrum and spectroscopic potential parameters of Cd2 molecule in the 1u(5(3)P2) energy state.

Excitation spectrum of Cd2 van der Waals complex was observed in a supersonic free-jet expansion beam. Cadmium dimers were seeded in argon environment (a carrier gas) while a pulsed dye laser served as an excitation light source. Well resolved structures of vibrational bands arising from transition between 1u(3pi(u)) and X0g+ (1sigmag+) states were observed. Using a Birge-Sponer method for analyzing the vibrational excitation spectrum, the first-time determination of the spectroscopical potential parameters of the 1u molecular state was performed. We obtained D'e = 723 +/- 10 cm(-1), omega'e = 28.9 +/- 1.0 cm(-1), omega'e x'e = 0.260 +/- 0.002 cm(-1) and R'e = 3.93 +/- 0.05 A. The latter value was estimated with the help of the computer-simulation of the spectrum. The results are compared with recent results of ab initio calculation of Czuchaj et al. (Chem. Phys. Lett. 225 (1994) 233) and demonstrate a reasonable agreement.

Biophysical Phenomena↗
PubMed2002

Double-well potential energy curve of cadmium-krypton molecule in the B1(5(3)P1) excited state.

The real shape of a double-well B1(5(3)P1)-state potential in CdKr van der Waals molecule was reconstructed applying both the experimental data, using a Birge-Sponer method-based analysis of the B1 <-- X0+(5(1)S0) transition in excitation spectrum, and theoretical result of recent ab initio calculation. An inverse perturbation approach method was used for defining an accurate B1-state potential energy curve.

Cadmium↗
PubMed2002

Laser spectroscopy of CdKr molecules in ultraviolet region.

Excitation spectra of the A0+(5(3)P1)<--X0+(5(1)S0), B1(5(3)P1)<--X0+ and D1(5(1)P1)<--X0+ transitions as well as a fluorescence spectrum of the D1(v') = 16 --> X0+ transition in CdKr van der Waals molecule has been recorded in an experiment of a continuous supersonic molecular beam crossed with a pulsed dye laser beam. A rigorous analysis of the excitation spectra based on Birge-Sponer and LeRoy-Bernstein methods aided with a computer calculation, utilizing a program of near dissociation expansion lead to the X0+- and improved A0+-, B1- and D1-state characterizations. Evidence of a theoretically predicted potential barrier within the B1-state well was found and discussed with regard to the latest result of ab initio calculation. An analysis of bound-bound and bound-free parts of the fluorescence spectrum confirmed a v'-assignment and indicated that Morse and Maitland-Smith M-S (n0, n1) functions are adequate representations of the bound well and repulsive wall of the X0+-state potential energy curve, respectively. All spectroscopic characteristics obtained in this work are compared with newest theoretical studies of this complex.

Cadmium↗
PubMed2000

[Results of surgical treatment in patients with laryngeal carcinoma after failed radiotherapy].

Fifty-eight patients with laryngeal cancer from ENT Department in Lodz operated because of neoplastic recurrences after radio-therapy or associated therapy (surgery + radio-therapy) were analyzed. Postradiation oedema of the larynx was the most common cause of failure and delay in making diagnosis of neoplastic recurrences after primary treatment. The most common pooperative complication were cutaneous-pharyngeal and cutaneous-oesophageal fistules (24 patients--41%). In 41 patients (70.1%) long healing after operation was observed. In 8 patients (13%) recurrences in oesophagus, in pooperative scar and in stomal region were observed. Five year follow-up was observed in 54% and 3 year follow-up in 39%.

Adult↗
PubMed1999

[Types of hearing disorders in drug addicts and individuals drinking non-consumable alcohols].

All over the world an increase in the number of subjects addicted to various chemical substances has been observed. The studies of their toxic effect on the hearing have been so far most frequently limited to acute intoxication or direct effect: there are no data concerning distant and persistent effects. The aim of the study was to determine the type of hearing loss in drug addicts and individuals drinking non-consumable alcohols, examined during the period of abstinence. A group of 210 subjects addicted to various substances was examined using acumetry test and tuning forks, as well as threshold, suprathreshold and speech audiometry. Taking into consideration the threshold results for particular subjects, the percentage of hearing loss for both ears was calculated using CPT index. Most frequent complaints connected with the organ of hearing, such as tinnitus and hearing impairment were reported by alcoholics and opioid addicts. In the age adjusted threshold audiometry, perceptive hearing loss was diagnosed in nearly 50% of the subjects. The percentage of hearing loss calculated for both ears, using CPT index, demonstrated the highest values in the group of subjects drinking non-consumable alcohols and addicted to volatile organic substances.

Adolescent↗
PubMed1997

[Bacterial flora of the mouth cavity and pharynx and postop wound infection in laryngeal cancer treatment].

The study was carried out on 12 surgically treated patients with carcinoma laryngis. Isolation and identification of oral cavity, pharynx, larynx and postoperative neck wound microflora were performed. Failures in neck wounds healing resulting from bacterial flora were compared. Sources of wound infection were found due to biochemical features and antibiotics sensibility.

Carcinoma↗
PubMed1997

[Vertigo and vestibular disorders in patients treated from sudden deafness].

In the article incidence of the vertigo and vestibular disorders in 119 patients with sudden sensorineural deafness was evaluated. It was stated, that vertigo and vestibular disorders had 47% of persons, abnormal trace in ENG examination--56% of persons. Furthermore hearing recovery was less frequent in group of patients with sudden deafness and vertigo than in group of patients without vertigo.

Adolescent↗
PubMed1996

[Radical neck dissection and the possibility of complications: surgical technique].

Based on 15 pictures the technique of radical neck dissection is presented with particular attention to the topography of the neck. Steps by steps the possibility of complications is considered. During the operation the mandible branches of the facial nerve, vagus nerve, hypoglossal nerve, phrenic nerve, accessory nerve, shoulder plexus, cervical plexus, sympathetic trunk can be injured as well as the jugular vein, carotid artery, occipital artery, thoracic duct. The critical moments for generation of these complications are indicated.

Cranial Nerves↗
PubMed1996

[The significance of rotation tests in diagnosis of vestibule and otolith].

The authors describe the most useful tests of rotatory stimulation of vestibular and otolith organs. Estimation of threshold of during the rotative excitatory test, acceleration-deceleration test and reactions post stimulation of otolith organs are represents. Examinations of otolith organs are exactly discussed. The physiological and pathological results of somatic "deviation" test are showed.

Humans↗
PubMed1995

[A new biopsy needle in the laryngological diagnosis].

An own constructed biopsy needle is described. The technique is applied in the deep tissue pathological lesions (neoplastic, mycotical and for bacterial infiltrations). The mean application is of endophitic infiltration diagnosis of the larynx. The authors stress the fact, that the needle seems to be useful in the pathomorphological diagnosis of the neck and breast tumors.

Biopsy, Needle↗
PubMed1995

[Plastic surgery of the trachea after laryngectomy].

Authors present new method of wind-pipe plastic operation post laryngectomy. In this method perpendicular scores of the skin are performed and special external sutures are made which stretch tracheostomy foramen to order to obtain wide inside measurement of wind-pipe. 78% operated patients may be without tracheotomy tube.

Humans↗
PubMed1995

[Regarding patient nourishment after laryngectomy].

Authors remember own method of location of stomach tube in laryngectomy patients and they give a detailed description of technic of this one. Authors discuss advantages and faults of this manner. They also present long-term observations in 54 patients who have undergone total laryngectomy and another way of location of stomach tube.

Enteral Nutrition↗
PubMed1995

[The prognostic value of modified quantitative classification and expression of monoclonal antibodies against PCNA in laryngeal neoplasm (introduction)].

In clinical practice there are no sufficient histopathological and immunohistochemical parameters to predicting progression of laryngeal cancer. We applied the new quantitative Anertoha, Blatsakisa and Luny cancer classification and expression of PCNA (proliferating cell nuclear antigen) to clinical findings to appreciate prognosis in laryngeal cancer.

Biomarkers, Tumor↗
PubMed1993

[Thermic investigations of the nystagmus induced in the Brunning's positions V-I in patients with unilateral, peripheral vestibular lesion].

There were examined 50 persons with unilateral peripheral lesion of vestibular system. Each patient was tested by method, in which inversion of nystagmus direction in respect of ampullopetal and ampullofugal stimulation followed cause of change of head's position--position Brünnings V-I--during irrigation 30 degrees C. Results obtained during these method were compared with effects of caloric Hallpike test. The method described in these paper could supply to classic caloric test.

Adolescent↗