3,134 research outputs found

    Interes publiczny i przestrzeń – kilka uwag

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    Udzielenie odpowiedzi na pytanie, czym jest interes publiczny, jest niezmiernie trudne, dotyczy bowiem niezwykle szerokiego pojęcia, zdaniem niektórych autorytetów naukowych – niedookreślonego. Mamy również do czynienia z szeregiem pojęć o treści i znaczeniu zbliżonym do pojęcia interesu publicznego, takich jak interes społeczny, dobro społeczne [NIK, 2018], wybór społeczny (public choice), dobro wspólne i cele społeczne [Siemiński, 2014]. Dlatego konieczne jest przyjęcie na wstępie kilku przedmiotowych oraz metodologicznych ograniczeń

    Extremal problems for second order hyperbolic systems involving multiple time delays

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    Extremal problems for multiple time delay hyperbolic systems are presented. The optimal boundary control problems for hyperbolic systems in which multiple time delays appear both in the state equations and in theNeumann boundary conditions are solved. The time horizon is fixed. Making use of Dubovicki-Milutin scheme, necessary and sufficient conditions of optimality for the Neumann problem with the quadratic performance functionals and constrained control are derived

    Zips Racing Electric CAN Communications

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    The CAN protocol has been a standard of electronic communication networks of automotive vehicles since the early 2000s due to its robust reliability in harsh environments. For the 2020 competition year, the Zips Racing Electric design team will be building an entirely new, fully-electric vehicle with CAN communication implemented rather than communicating via pure analog signals. Hardware and software can be utilized to read analog electrical signals from a source, such as accelerator and brake sensors, and encode them into a digital message that meets the CAN 2.0B communication protocol standard. Likewise, software can be used to extract data from CAN 2.0B messages, such as accumulator state of charge, which can then be sent to other subsystems, such as a dashboard display

    Contrast-enhanced ultrasonography versus computed tomographic angiography in the monitoring of patients after endovascular repair of abdominal aortic aneurysm - preliminary experience

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    BACKGROUND: Computed tomographic angiography (CTA) is routinely used in the monitoring of patients after endovascular repair of abdominal aortic aneurysm. The aim of the study was to determine if contrast-enhanced ultrasonography (CEUS) provides equivalent results to CTA in detection of endo-leaks in patients after abdominal aortic stentgraft placement. MATERIAL AND METHODS: In a group of 7 patients (6 men and 1 woman; aged 71±7 years) after repair procedure, 16 CTA and 16 CEUS follow-up examinations were performed. Second-generation contrast agent (Sonovue) and low-mechanical index technique were used for ultrasonography imaging. RESULTS: Computed tomographic angiography showed seven cases of type I, five cases of type II, and no endo-leaks in four examinations. In 15 out of 16 studies, the results of CEUS were consistent with the results of CTA. In one discrepant study, type II endo-leak was detected with CEUS while CTA was negative. CONCLUSIONS: Contrast-enhanced ultrasonography and CTA examinations in patients after endovascular repair of abdominal aortic aneurysm provide comparable results. CEUS may be considered an alternative technique to CTA

    Earth observations from DSCOVR EPIC instrument

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    The National Oceanic and Atmospheric Administration (NOAA) Deep Space Climate Observatory (DSCOVR) spacecraft was launched on 11 February 2015 and in June 2015 achieved its orbit at the first Lagrange point (L1), 1.5 million km from Earth toward the sun. There are two National Aeronautics and Space Administration (NASA) Earth-observing instruments on board: the Earth Polychromatic Imaging Camera (EPIC) and the National Institute of Standards and Technology Advanced Radiometer (NISTAR). The purpose of this paper is to describe various capabilities of the DSCOVR EPIC instrument. EPIC views the entire sunlit Earth from sunrise to sunset at the backscattering direction (scattering angles between 168.5° and 175.5°) with 10 narrowband filters: 317, 325, 340, 388, 443, 552, 680, 688, 764, and 779 nm. We discuss a number of preprocessing steps necessary for EPIC calibration including the geolocation algorithm and the radiometric calibration for each wavelength channel in terms of EPIC counts per second for conversion to reflectance units. The principal EPIC products are total ozone (O3) amount, scene reflectivity, erythemal irradiance, ultraviolet (UV) aerosol properties, sulfur dioxide (SO2) for volcanic eruptions, surface spectral reflectance, vegetation properties, and cloud products including cloud height. Finally, we describe the observation of horizontally oriented ice crystals in clouds and the unexpected use of the O2 B-band absorption for vegetation properties.The NASA GSFC DSCOVR project is funded by NASA Earth Science Division. We gratefully acknowledge the work by S. Taylor and B. Fisher for help with the SO2 retrievals and Marshall Sutton, Carl Hostetter, and the EPIC NISTAR project for help with EPIC data. We also would like to thank the EPIC Cloud Algorithm team, especially Dr. Gala Wind, for the contribution to the EPIC cloud products. (NASA Earth Science Division)Accepted manuscrip

    Chrzęstniakomięsak zatoki szczękowej: opis przypadku i przegląd aktualnej literatury

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    Chrzęstniakomięsak, złośliwy guz pochodzenia mezenchymalnego, jest drugim co do częstości występowania nowotworem kości po mięsaku kościopochodnym. Jego rozpoznanie należy do najtrudniejszych w patomorfologii. W narządach głowy i szyi ten typ nowotworu występuje rzadko. W pracy przedstawiono przypadek 45-letniej kobiety z nietypową manifestacją chrzęstniakomięsaka, pod postacią guza lewej zatoki szczękowej.Czterdziestopięcioletnią kobietę poddano szczegółowej diagnostyce z powodu podejrzenia procesu rozrostowego wywodzącego się z lewej zatoki szczękowej. W obrazach tomografii komputerowej (TK) i rezonansu magnetycznego (MRI) wykazano obecność nieprawidłowej masy naciekającej otaczające tkanki. Rozpoznanie chrzęstniakomięsaka nie zostało przez długi czas ustalone z powodu braku korelacji pomiędzy obrazem klinicznym a mikroskopowym. U chorej wykonano lewostronną, subtotalną maksilektomię metodą Webera-Fergusona, obustronną etmoidektomię, sfenoidektomię i prawą górną turbinektomię, wycięcie przegrody nosa, lewej zatoki czołowej oraz enukleację lewej gałki ocznej.Obraz mikroskopowy materiału z biopsji może nie być wystarczający do postawienia właściwej diagnozy. Powyższy przypadek przedstawia, jak istotna jest właściwa korelacja dostępnych wyników badań obrazowych oraz badań histopatologicznych oraz jak heterogennym nowotworem może być chrzęstniakomięsak. Pobranie do oceny tkanek z różnych fragmentów guza jest kluczowe dla zmniejszenia ryzyka błędu diagnostycznego. W skomplikowanych i niejednoznacznych przypadkach nawet niepewne rozpoznanie histopatologiczne możeokazać pomocne w ustaleniu właściwego postępowania terapeutycznego

    Chondrosarcoma of the maxilla: a case report and review of current literature

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    Chondrosarcoma is a malignant mesenchymal tumour that is the second most common bone tumour after osteosarcoma. Its diagnosis is among the most difficult ones in tumour pathology. Here, we report a very unique case of chondrosarcoma in maxillary sinus. A 45-year-old woman presented with a tumour on the left side of the maxillary sinus. CT and MRI imaging showed an abnormal mass destructing surrounding tissues. The final diagnosis of chondrosarcoma could not be made for a long time due to lack of correlation between clinical and microscopic examinations. The patient underwent left subtotal maxillectomy via Weber-Ferguson incision, bilateral ethmoidectomy, sphenoidectomy, and right upper turbinectomy, and excision of nasal septum, left frontal sinus, and left exenteration of orbit. Histological changes in the small biopsy specimen may be not sufficient for definitive diagnosis. Our case shows that radiography combined with histopathology is necessary to make the final diagnosis. The presented case revealed that chondrosarcoma can be a heterogeneous tumour. Collecting tissue samples from different locations is essential for improving diagnosis and reducing diagnostic error. Combining clinical data even with uncertain microscopic examination may be a solution in borderline and complicated cases.Chondrosarcoma is a malignant mesenchymal tumour that is the second most common bone tumour after osteosarcoma. Its diagnosis is among the most difficult ones in tumour pathology. Here, we report a very unique case of chondrosarcoma in maxillary sinus. A 45-year-old woman presented with a tumour on the left side of the maxillary sinus. CT and MRI imaging showed an abnormal mass destructing surrounding tissues. The final diagnosis of chondrosarcoma could not be made for a long time due to lack of correlation between clinical and microscopic examinations. The patient underwent left subtotal maxillectomy via Weber-Ferguson incision, bilateral ethmoidectomy, sphenoidectomy, and right upper turbinectomy, and excision of nasal septum, left frontal sinus, and left exenteration of orbit. Histological changes in the small biopsy specimen may be not sufficient for definitive diagnosis. Our case shows that radiography combined with histopathology is necessary to make the final diagnosis. The presented case revealed that chondrosarcoma can be a heterogeneous tumour. Collecting tissue samples from different locations is essential for improving diagnosis and reducing diagnostic error. Combining clinical data even with uncertain microscopic examination may be a solution in borderline and complicated cases

    Refining PD-1/PD-L1 assessment for biomarker-guided immunotherapy: A review

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    Anti-programmed cell death ligand 1 (anti-PD-L1)  immunotherapy is an increasingly crucial in cancer treatment. To date, the Federal Drug Administration (FDA) has approved four PD-L1 immunohistochemistry (IHC) staining protocols, commercially available in the form of "kits", facilitating testing for PD-L1 expression. These kits comprise four PD-L1 antibodies on two separate IHC platforms, each utilizing distinct, non-interchangeable scoring systems. Several factors, including tumor heterogeneity and the size of the tissue specimens assessed, can lead to PD-L1 status misclassification, potentially hindering the initiation of therapy. Therefore, the development of more accurate predictive biomarkers to distinguish between responders and non-responders prior to anti-PD-1/PD-L1 therapy warrants further research. Achieving this goal necessitates refining sampling criteria, enhancing current methods of PD-L1 detection, and deepening our understanding of the impact of additional biomarkers. In this article, we review potential solutions to improve the predictive accuracy of PD-L1 assessment in order to more precisely anticipate patients' responses to anti-PD-1/PD-L1 therapy, monitor disease progression and predict clinical outcomes

    Atopic dermatitis. Interdisciplinary diagnostic and therapeutic recommendations of the Polish Dermatological Society, Polish Society of Allergology, Polish Pediatric Society and Polish Society of Family Medicine : part II : systemic treatment and new therapeutic methods

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    The treatment goal in atopic dermatitis is eliminating clinical symptoms of the disease, preventing exacerbations and complications, as well as improving patients’ quality of life. In cases of severe atopic dermatitis and lack of response it is recommended to introduce systemic therapy. Patients ofter require multi-specialist consultations, and occasionally hospitalization. It is not recommended to use acupuncture, acupressure, bioresonance, homeopathy, or Chinese herbs in the treatment of atopic dermatitis

    Atopic dermatitis. Interdisciplinary diagnostic and therapeutic recommendations of the Polish Dermatological Society, Polish Society of Allergology, Polish Pediatric Society and Polish Society of Family Medicine. Part I. Prophylaxis, topical treatment and phototherapy

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    Atopic dermatitis is a chronic and recurrent inflammatory dermatosis with concomitant intensive pruritus, and is diagnosed both in children and adults. Atopic dermatitis-patients are predisposed to have bacterial, viral and fungal skin infections; they also suffer from an increased risk of developing food allergies (especially, at an infantile age), allergic rhinitis, or bronchial asthma (a so-called atopic march). Currently, an increasing atopic dermatitis incidence constitutes a serious medical problem that regards not only dermatology and allergology, but also paediatrics, and family medicine. The basis for atopic dermatitis treatment and prophylaxis is restoration of epidermal barrier functions by means of tailored emollients. Atopic dermatitis therapies should effectively eliminate clinical symptoms of the disease, prevent exacerbations as well as complications, and improve patients’ quality of life
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