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Biomedical subjects

M Lacki

Publications and source records attributed to M Lacki.

15 recordsLinked to original sources
PubMed2001

Differentiation between used motor oils on the basis of their IR spectra with application of the correlation method.

Two brands of motor oils (Elf and Castrol) that had been used for various periods of time were examined. The aim was to differentiate these samples (of varying degree of use) on the basis of their infrared spectra, for criminalistic purposes. The correlation method was used. It was found that the FTIR method is capable of providing sufficiently detailed information if some specific fragments of spectra are examined. Hence, it can be concluded that the investigation procedure proposed is adequate.

Fuel Oils↗
PubMed1989

[Gallbladder carcinoma--results of treatment].

One-hundred patients treated for gallbladder carcinoma in the years 1970-1986 are described. They accounted for 2.63% of all patients treated surgically for diseases of the gallbladder and bile ducts. Coexistence of carcinoma and cholelithiasis was found in 76% of cases. In 64 cases only exploratory laparotomy was done and biopsy was done for histological examination, since the progression of the tumour precluded any radical operation. In 15 cases cholecystectomy was done and in the remaining 21 patients palliative procedures were done. In the perioperative period 17 patients died. Information on the length of survival time was obtained in 43 cases. It was longest in cases in which the degree of progression of the tumour was classified into stages I and II after Nevin. Six patients are alive 7 months to 8 years after the operation. The authors think that the methods for improvement of the results of surgical treatment should be sought in prevention of this carcinoma that is early surgical treatment of cholelithiasis.

Adult↗
PubMedDate not supplied

The sensitivity of the respiratory center and some circulatory and subjective responses after nalorphine and naloxone injections.

In five volunteers the sensitivity of the respiratory centre to carbon dioxide after naloxone and nalorphine injections was studied using "double blind" method and increments of doses. Alterations in the respiratory centre sensitivity were reflected by changes in respiratory minute volume, which was measured before and after drug injections, as well as after carbon dioxide stimulation. Comparison of results and their statistical verification showed that nalorphine alone causes respiratory depression and carbon dioxide stimulation is, beside the weak initial action, almost ineffective. Naloxone causes very small, if at all, respiratory depression and the respiratory centre answers efficiently to carbon dioxide stimulation.

Carbon Dioxide↗