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tom R. 86, nr 3
30-31
EN
A new suboptimal non-linear algorithm for state estimation in the presence of interferences is presented. The algorithm was designed with use of the non-linear filtering theory and the Gaussian approximation method. The simulations results in different environment conditions have revealed its high efficiency.
PL
W artykule zaproponowano suboptymalny nieliniowy algorytm estymacji stanu w warunkach zakłóceń. Prezentowana metoda opiera się na teorii filtracji nieliniowej oraz wykorzystuje metodę aproksymacji Gaussowskiej.
8
Content available remote Data processing algorithm for the Rayleigh fading channels
63%
EN
The paper considers development of an adaptive algorithm for a measurement system in conditions of Rayleigh fading of signals in radio channels. The probability density functions (pdf) of time measurement variances are calculated. For these pdf an approximation of measurement noise distributions is proposed and an adaptive Kalman filter for processing transmitted data has been designed. The results of simulations of the proposed adaptive algorithm are presented.
PL
W artykule zaproponowano adaptacyjny algorytm przetwarzania danych w systemach przesyłu informacji w warunkach fluktuacji amplitudy o charakterze Rayleigha. Zaproponowano wykorzystanie aproksymacji funkcji gęstości prawdopodobieństwa szumu pomiarowego oraz adaptacyjny filtr Kalmana. Przedstawiono wyniki badań symulacyjnych.
PL
W pracy określono koszty zagospodarowania pulpy pofermentacyjnej z biogazowni metodą odzysku R10 (do celów nawozowych w rolnictwie). Stwierdzono, że ze względu na obecną klasyfikację pofermentu jako potencjalnie niebezpiecznego odpadu (jak np. osadów ściekowych) koszty analiz glebowych mogą być nawet wyższe niż samego rozwożenia pulpy. Omówiono bardzo istotne zmiany dotyczące zmniejszenia kosztów zagospodarowania pofermentu wg projektu zmiany ustawy o nawozach i nawożeniu. Zmiany te nie będą jednak dotyczyć biogazowni odpadowych.
EN
The study defines the management costs of digested pulp from biogas plant with usage of recovery method R10 (for manurial purposes in agriculture). It has been stated that because of present digestate classification as a waste potentially dangerous for environment (i.e. sewage sludge) the costs of soil analysis can be higher than costs of pulp transportation. Very important changes concerning cost decrease of digestate management according to the modification project of the law about fertilizers and fertilization have been discussed. However these changes will not refer to the waste biogas plants.
11
Content available Choroba mokrego ogona u chomików
51%
EN
To date, only a few cases of Demodex gatoi demodecosis have been reported around the world. D. gatoi is a species of mites that infest cats. The mite is much smaller than D. cati and inhabits the superficial keratin skin layer rather than hair follicles. We describe D. gatoi infestation in a young male British Shorthair cat with pruritic dermatosis treated chronically with immunosuppressive drugs for food allergy. In this report we present the diagnostic process and problems associated with the treatment of D. gatoi infestation in a cat undergoing immunosuppressive therapy.
EN
The paper presents the results of the investigation into fl exible layers based on carbon nanotubes used as measuring layer in forcesensor. Results of mechanical fatigue tests show that carbon nanotubes layers are good for reinforcing or as a conductive additive in composite materials. Composition of carbon nanotubes in PMMA polymer resin was prepared by modifi ed mixing process used in thick film material preparation. Sensor structure was fabricated by printing polymer-nanotube areas with polymer-silver paths as connection electrodes on polyester substrate foil. Second type of sensors was prepared with two comb electrodes and single carbon measuring layer. Composite materials were fabricated with diff erent amount of nanotube content: 0,25 wt%, 0,5 wt%, 1 wt% and 2 wt% multiwall carbon naotubes (MWCNT). Diff erent types of carbon-composites measuring layers were compared in the experiment. Results of mechanical fatigue tests conducted on carbon nanotubes layers showed that composition with polymer resin have good adhesion to polymer surface. Experiment shows CNT are good for reinforcing or as a conductive additive in diff erent composite materials. Results of the observations show that dependence between sensor resistance and force tension is linear in logarithmic scale and similar for diff erent samples. Resistance between sensor electrodes was measured for force tension changes in range.
EN
Protozoal infection of T. gondii is a public health problem and also causes serious economic losses in livestock production in many countries. Farm animals from organic farms are more likely to be infected. The aim of the study was to determine the prevalence of Toxoplasma gondii among 50 dairy goats from an organic farm in the northwestern Poland region and to assess the prevalence of parasite DNA in the milk of infected animals. Serological tests performed by direct agglutination of IgG antibodies against T. gondii were positive in 10% of the tested animals. No parasite DNA was detected in the milk from the seropositive goats. However, the number of tested animals was too small to draw significant epidemiological conclusions.
EN
Current methods used for the diagnosis and treatment of coronary diseases require detailed knowledge of the morphology of cardiac vessels, including the clinical aspects of the subepicardial cardiac veins. The study was conducted on 50 corpses of adult domestic shorthair cats of both sexes (24 ♂, 26 ♀), having an average body weight of 4.15 kg and aged from 2 to 10 years. A clear view of subepicardial cardiac veins was obtained by filling them with dyed synthetic latex (LBS 3060). The next stage of the study consisted in a detailed preparation of the main trunks with the use of a Global surgical microscope. It was found that the veins that drained the heart were the great cardiac vein, the middle cardiac vein, and the right cardiac veins. The course, main branches, and termination of the cardiac veins were determined. In view of the clinical importance of these cardiac vessels and their branches, universal nomenclature was suggested.
EN
GNPs based layers prepared with screen printing technology proved to have good mechanical resistance and high transparency. GNPs agglomerates were observed in investigated samples and they are the cause of the layer's resistance raise. Further investigation needs to be done to observe how such situation can be avoided. First experiments on carbon nanotubes layers showed that using dispersants prevents agglomerating. Without agglomerates appearing in the samples, conductivity improves consistently.
PL
Celem pracy była ocean wgajania materiału tkankowego (allografu tętniczego) i protezy impregnowanej srebrem w masywnym zakażeniu protezy naczyniowej. W pracy przedstawiono zastosowanie przeszczepu tętniczego pobranego ze zwłok w czasie pobrania wielonarządowego (50 chorych) i impregnowanej solami srebra protezy naczyniowej (27 chorych). Badania wykonywano w Katedrze i Klinice Chirurgii Naczyniowej, Ogólnej i Transplantacyjnej Akademii Medycznej we Wrocławiu w latach 1999-2003. U wszystkich chorych wykonano przed zabiegiem operacyjnym i w obserwacji pooperacyjnej badania obrazowe: ultrasonografię duplex-doppler i scyntygrafię leukocytami znakowanymi Technetem-99m. Badaniem scyntygraficznym z użyciem leukocytów znakowanych Technetem-99m potwierdzono ustępowanie zakażenia po wymianie zainfekowanej protezy naczyniowej na homograft tętniczy i protezę impregnowaną solami srebra. Wynik badania scyntygraficznego, który wykazuje zwiększoną migrację znakowanych technetem leukocytów w kierunku zastosowanej protezy impregnowanej solami srebra, każe stosować taką protezę w zakażeniach z dużą ostrożnością i wyłącznie w stanach zagrożenia życia
EN
The purpose of his study is to evaluate his use of arterial homograft and silver-coated medical prosthesis in cases of the massive vascular graft infection. In this paper the use of arterial homograft (50 patients) silver-coated medical prosthesis (27 patients) of massive dacron graft infection is presented. The study was made in the Department of Vascular, General and Transplantation Surgery in Wrocław University of Medicine in the period of years from 1999 to 2003. For lack of tissue material and because of the exclusion of extraanatomic bypass application, in situ replacement was attempted using silver-coated dacron vascular prosthesis more resistant to infection. Before and after the surgery in all patients imaging studies were performed. Duplex Doppler Ultrasound demonstrated perigraft fluid collections are the scintigraphy with use of Technetium-labeled leukocytes revealed vast migration to the infected prosthesis. The remission of the symptoms of infection was obtained. In the postoperative follow up no perigraft fluid collections were observed. In the most cases positive clinical effect was obtained, the scinigraphy of implanted graft revealed its infection. Because the scinitraphy disclosed Technetium-labeled leukocytes vast migration to the implanted graft, the application of silver coated medical prosthesis should be very cautious and limited to the critical states
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