Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Pedagogiczna Biblioteka Wojewódzka im. Komisji Edukacji Narodowej w Lublinie Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaPedagogiczna Biblioteka Wojewódzka im. Komisji Edukacji Narodowej w Lublinie
Zmień bibliotekę

Wyszukujesz frazę "Świątkowski, Piotr." wg kryterium: Autor

  Lista filtrów
Wyrównaj
Wyświetlanie 1-10 z 11
Tytuł:
Obieg kogeneracyjny w wodnych kotłach ciepłowniczych
Autorzy:
Ostrowski, Piotr
Pronobis, Marek
Świątkowski, Tomasz
Tematy:
kocioł ciepłowniczy
kocioł wodny
kogeneracja
energia elektryczna
wytwarzanie energii elektrycznej
ciepło
wytwarzanie ciepła
heating boiler
water boiler
cogeneration
electricity
electricity generation
heat
heat generation
Pokaż więcej
Wydawca:
Nowa Energia
Powiązania:
https://bibliotekanauki.pl/articles/986605.pdf  Link otwiera się w nowym oknie
Opis:
Kogeneracja - wspólne wytwarzanie energii elektrycznej i ciepła przynosi oszczędności w zużyciu paliw pierwotnych. W związku z tym przyczynia się do redukcji emisji szkodliwych substancji do atmosfery (CO2), co również oznacza zmniejszenie kosztów zewnętrznych wytwarzania energii i ciepła. Do tej pory cykle kogeneracyjne nie były stosowane w ciepłowniach wyposażonych w kotły wodne (wodno-rurowe lub płomienicowo-płomieniówkowe). W artykule przedstawiono koncepcję innowacyjnego obiegu kogeneracji, który współpracuje z wodnym kotłem ciepłowniczym lub przemysłowym, a instalacja kogeneracji nie zmienia zatwierdzenia parametrów technicznych kotła i nie ogranicza zakresu jego użytkowania. Przedstawiono opracowane obiegi porównawcze w układach h-s i T-s, pasmowy wykres energii Sankey'a oraz wykresy wybranych wskaźników kogeneracji. Ponadto przedstawiono wskaźniki ekonomiczne kogeneracji dla kotłów wodnych.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cortical fibrous defects and non-ossifying fibromas in children and young adults : the analysis of radiological features in 28 cases and a review of literature
Autorzy:
Błaż, Marcin
Palczewski, Piotr
Świątkowski, Jan
Gołębiowski, Marek
Opis:
Background: To assess and describe the variability of radiological presentations of fibrous cortical defects and non-ossifying fibromas in children and young adults. Material/Methods: Medical records of 28 patients (15 males, 13 females, mean age of 17 years) with a radiological diagnosis of cortical fibrous defect or non-ossifying fibroma were reviewed retrospectively. The presentation of the lesion, its location and morphology according to Ritschl's classification, as well as the number and types of imaging studies performed in the study group were assessed. Results: Almost all lesions constituted an incidental finding discovered on plain films performed due to trauma. One lesion presented with a pathological fracture. There were 4 patients (mean age of 11 years) with stage A lesion, 9 patients (mean age of 16 years) with stage B lesion, 10 patients (mean age of 18 years) with stage C lesion, and 5 patients (mean age of 23 years) with stage D lesion. The lesions were located mostly in bones around the knee joint. In more than a half of the patients, further imaging was performed apart from plain films. Four lesions were biopsied (1 of stage B and 3 of stage C). Conclusions: A considerable morphological variability of cortical fibrous defects and non-ossifying fibromas, especially of stage C, seems to be the main cause of unnecessary additional imaging and invasive diagnostic procedures in patients with this benign pathology. The knowledge of their age-related evolution and typical skeletal distribution should help in making a correct diagnosis.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Tłuszczaki śródkostne w materiale własnym : opis 6 przypadków i przegląd piśmiennictwa
Intraosseous lipomas : a report of six cases and a review of literature
Autorzy:
Błasińska-Przerwa, Katarzyna
Gołębiowski, Marek
Palczewski, Piotr
Świątkowski, Jan
Opis:
Background: Intraosseous lipoma is a very rare lesion, which constitutes not more than 0.1% of bone tumors. The introduction of cross-sectional imaging, especially MRI, seems to have increased the detection rate of these lesions. Case Report: The authors presented 6 cases of intraosseous lipomas in bones of the lower extremities. All lesions were detected incidentally and presented radiographically as radiolucent lesions with sclerotic borders and internal trabeculations. One lesion caused bone expansion. CT and MRI identified fatty tissue in all lesions. Cystic degeneration was present in one lesion and dystrophic calcifications in two. Discussion: The radiographic appearance of intraosseous lipomas is not characteristic and requires differential diagnostics conducted for a long time. However, CT and MRI allow for a tissue-specific diagnosis. The detection of a predominant fatty component in a lesion confirms its benign character and no further diagnostic work-up is required.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Ischiofemoral impingement syndrome : a case report and a review of literature
Autorzy:
Kocoń, Hanna
Palczewski, Piotr
Gołębiowski, Marek
Sułkowska, Katarzyna
Świątkowski, Jan
Opis:
BACKGROUND: Ischiofemoral impingement syndrome is characterized by a hip pain associated with abnormalities in quadriceps femoris muscle and ipsilaterally reduced distance between the lesser trochanter and the ischium. Thus far, the congenital variant of this entity has been reported exclusively in women. CASE REPORT: We report a case of a 22-year old male with painful hips in whom on the basis of the imaging studies the constitutional variant of ischiofemoral impingement was diagnosed. CONCLUSIONS: Ischiofemoral conflict should be taken into consideration in the differential diagnosis of hip pain, particularly among women, but also in patients with valgus hip deformity and other abnormalities leading to reduction of the space between femoral and ischial bones independent of gender.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Osteoblastoma of the femur in a patient with recurrent paronychia : case report
Autorzy:
Palczewski, Piotr
Babiak, Ireneusz
Gołębiowski, Marek
Świątkowski, Jan
Wiśniewska, Małgorzata
Opis:
Background: Osteoblastoma is a rare primary benign bone tumor that has varied radiologic presentation depending on the affected site. In selected cases, differential diagnosis with subacute osteomyelitis is necessary. Case Report: The authors present the case of a 23 year-old male with recurrent paronychia diagnosed with osteoblastoma of the femur. On the basis of CT and MRI findings, osteosarcoma, ABC, enchondroma, chondromyxoid fibroma, and Brodie's abscess were excluded from differential diagnosis, with the last option being the second most probable diagnosis given the coexistence of chronic pyogenic process. Discussion: Plain film findings in osteoblastoma and Brodie's abscess may be strikingly similar with an osteolytic lesion surrounded by prominent sclerosis. The nature of the lesion can be further elucidated by cross-sectional imaging. CT helps to assess the lesion matrix and presence or absence of sequestra or fistulae, while MRI defines the extent of the changes in bone marrow cavity and soft tissues.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Is whole-body trauma MDCT justified in patients in good clinical condition but with dangerous trauma mechanism?
Autorzy:
Palczewski, Piotr
Wisniewska, Malgorzata
Golebiowski, Marek
Blaz, Marcin
Swiatkowski, Jan
Szeszkowski, Wojciech
Opis:
Background: To assess whether whole body MDCT is justified in patients in good clinical condition yet with dangerous trauma mechanism. Material/Methods: The study included 81 patients who were examined between January and July 2008 with wholebody trauma CT protocol. Inclusion into the study was based on a dangerous trauma mechanism and the possibility of an unbiased calculation of the weighted revised trauma score (RTSw). All examinations were performed with 16 row MDCT scanner located in emergency department. The cut off of the RTSw over 6.0 was used to separate the patients in good clinical condition. The CT examinations and medical records of patients were reviewed to assess the number of significant injuries, the need for emergency surgery and other types of medical treatment, the number of negative CT examinations, the number of patients admitted to hospital, and mortality. Results: 28 life-threatening injuries were found in 21 of 61 patients with RTS over 6.0 (34.4%). Only two of those patients required emergency surgery (laparotomy). CT studies were negative for traumatic injuries in 22 patients from this group (36.0%). Conclusions: Whole-body MDCT may detect injuries in patients in good clinical condition, with some of them demanding medical treatment. Still, further studies are required to balance the advantages of MDCT and potentially harmful effects of radiation dose, especially better triage systems and lowdose protocols are needed.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Diagnostic accuracy of plain films in detection of thoracolumbar fractures in minor trauma patients : comparison with CT
Autorzy:
Bereźniak, Marlena
Niwiński, Jan
Palczewski, Piotr
Świątkowski, Jan
Byrdy-Daca, Marta
Łęgosz, Paweł
Gołębiowski, Marek
Piłat, Krzysztof
Opis:
Purpose: To evaluate the diagnostic value of X-ray in detecting acute thoracolumbar (TL) fractures in minor trauma patients, using computed tomography (CT) as the reference standard, and to assess the impact of rigid spine conditions and reader experience on performance. Material and methods: This retrospective single-centre study included patients with acute TL fractures from minor trauma between July 2014 and December 2020, who underwent both X-ray and CT. On CT, the presence or absence of rigid spine conditions, location, and fracture morphology were assessed. Two independent readers (a radiology resident and an attending radiologist) evaluated the radiographs, blinded to CTs. Sensitivity, specificity, and accuracy were calculated, and interobserver agreement was assessed using Cohen’s κ coefficient. Results: Sixty-three patients (32 with rigid spines, 31 without) with 84 fractures were included. The resident radiologist showed lower diagnostic accuracy than the attending radiologist, with more false positives in the rigid-spine group. In both groups, unrecognised fractures were more common for the resident radiologist (61.2% in rigid-spine patients and 48.6% in non-rigid-spine patients) compared to the attending radiologist (51.0% and 40.0%, respectively). Thoracic fractures were more frequently missed than lumbar fractures. Interobserver agreement was moderate (κ = 0.44) in the rigid-spine group and substantial (κ = 0.67) in the non-rigid-spine group. Conclusions: Radiographs cannot reliably exclude unstable TL fractures in minor trauma patients. Attention should be paid to the lower thoracic region when evaluating lumbar radiographs.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Wyświetlanie 1-10 z 11

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies