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Automatyczna stacja wykrywania zanieczyszczeń ropopochodnych w zbiornikach wodnych

100%

Zaraska K. , Cież M. , Grzesiak W. , Kozioł S. , Wiejak J. , Molenda J.

tom nr 2

191-198

Artykuł przedstawia zagadnienia badawcze, które należało podjąć, aby zrealizować prototyp autonomicznej stacji, będącej elementem systemu wykrywania skażeń wody produktami ropopochodnymi. Stacja ma postać pływającej platformy i przeznaczona jest do stosowania na akwenach lądowych (rzeki, jeziora). Podstawowym wymogiem konstrukcyjnym jest autonomiczność oraz bezobsługowość urządzenia. Omówiono zastosowane rozwiązania konstrukcyjne w aspekcie konstrukcji mechanicznej, systemu zasilania oraz metody wykrywania zanieczyszczeń ropopochodnych.

This paper describes a research problem which should be undertaken to create a prototype structure and practical implementation of an autonomous floating station destined for an automatic oil spill detection system. The device has the form of a floating platform, applicable for use on inland waters (lakes, rivers). The main requirement for such a device is that it should be autonomous and not require maintenance. The paper describes in detail the solutions applied, in particular with respect to the mechanical construction, photovoltaic power supply system and method of oil spill detection.

Zastosowanie niskokosztowej matrycy czujników podczerwieni termicznej do detekcji osób

84%

Zaraska K. , Grzesiak W. , Guzdek P. , Kolaszczyński G. , Piekarski J. , Maćków P. , Maj T. , Polak A. , Solnica D. , Iwanicki P.

tom Vol. 59, nr 9

2--5

W artykule przedstawiono zastosowanie niskokosztowej kamery podczerwieni termicznej o rozdzielczości 32x32 punkty do detekcji osób w pomieszczeniach dla zastosowania w systemach inteligentnego oświetlenia. Opisywane urządzenie złożone jest z kamery podczerwieni oraz mikrokontrolera realizującego algorytm obróbki obrazu w czasie rzeczywistym. Artykuł przedstawia kroki algorytmiczne niezbędne do detekcji obecności osoby w pomieszczeniu, przy jednoczesnym ignorowaniu innych źródeł ciepła, takich jak grzejniki.

This paper describes the application of a low-cost 32x32 pixel infrared camera for detection of people for application in smart lighting systems. The system is based on an infrared camera and a microcontroller implementing an image processing algorithm in real time. The developed detection method allows detection of people in enclosed spaces, at the same time ignoring other sources of heat, such as heaters.

Effects of continuous microchip (MC) vagal neuromodulation on gastrointestinal function in rats

84%

Krolczyk G. , Zurowski D. , Sobocki J. , Slowiaczek M. P. , Laskiewicz J. , Matyja A. , Zaraska K. , Zaraska W. , Thor P. J.

nr 4,1

Afferent fibers from gastrointestinal tract outnumber efferents ten times in vagal nerves. Modifying the afferent input makes possible to change discharge of vagal efferents affecting gastrointestinal functions in process known as neuromodulation (NM). Lately it has been used in the treatment of pain and hyperactive neurogenic bladder in urology. MC induced NM may therefore provide a concurrent to pharmacology tool, in treatment of gastrointestinal disorders. The aim of this study was to investigate the effects of long term neuromodulation procedure with use of MC on gastric motility, secretion and weight control in conscious rats. Experiments were performed on 30 Wistar male rats (250—350 g) divided in two groups: sham operated and microsurgically implanted with MC on left vagal nerve below diaphragm. Following stimulation parameters were used: frequency of 0.5—30 Hz, amplitude of 0.55 V, impulse duration of 10 ms in monophasic fashion. In both groups food intake and body weight were measured through the period of 2 weeks after recovery period. Then gastric fistula was implanted in gastric antrum and fasted gastric motility recorded with use of PowerLab system (Australia). Gastric emptying and secretion were also tested with use of phenol red and automatic titration methods. On the daily basis glucose level with standard test and leptin after MC implantation were measured. Recording of vagal activity in fasted rats showed burst of action potentials about 5 ± 2,5 in period of 5000 sec, each burst with spike frequency up to 35 Hz. Food (5 ml of Intralipid – intragastrically) almost doubled amount of bursts to 12 ± 5 in period of 5000 sec with increase in frequency at spike up to 50 Hz. MC induced vagal activity showed continuous spike activity similar to fed pattern. MC induced NM decreases daily food intake by 6% (33.6 ± 4.8 vs control 35.5 ± 4.8 g, p < 0.01). Body weight gain in rats before MC implantation decreased by 20% within 2 weeks after recovery (34.8 ± 9.08 vs control 23.56 ± 4.15 g). Fasting control glucose level also decreased of 5.5% (93.15 ± 9.3 vs control 98.5 ± 11.2 mg%, p < 0.05). Frequency of gastric contractions did not change significantly in MC versus control but amplitude of contractions increased of about 66.7% (2.0 ± 0.8 vs 1.17 ± 0.52) at the dominant frequency 0.08 Hz range and about 71.5% (1.17 ± 0.35 vs 0.68 ± 0.47, p < 0.05) at the frequency 0.12 Hz. in FFT analysis PowerLab (chart v = 4.01). BAO decreased by 29.25% without H+ concentration changes (0.2 ± 0.14 vs 0.14 ± 0.12 mmol/30min, p < 0,05) but MAO did not change in MC rats (0.37 ± 0.25 vs 0.42 ± 0.28 mmol/30min, p0.05). Gastric emptying of isotonic solution increased by 10% (90.46 ± 5.34 vs 80.39 ± 9.95) percent of marker passing to duodenum /5min,.p < 0.0001). Our results suggest that MC induced NM affect brain-gut axis via influencing metabolic and gastric function and decreases body weight. 706