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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
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Tytuł:
An optical gamma-ray burst catalogue with measured redshift : I. Data release of 535 gamma-ray bursts and colour evolution
Autorzy:
Rossi, A.
Oates, S. R.
Orange, N. B.
Moriya, T. J.
Rinaldi, E.
Fraija, N.
Lopresti, C.
Jamal, W.
González, J. d. J. G.
Gendre, B.
Prochaska, X.
Levine, D.
Kumar, R.
Rosi, P.
Castro-Tirado, A. J.
Becerra, R. L.
Conti, M.
Pozanenko, A.
Das, U.
Richer, M.
Strabla, L.
Butler, N. R.
Saha, N.
Misra, K.
Niino, Y.
do E. S. Pedreira, A. C. C.
Kido, D.
Watson, A. M.
Volnova, A.
Kutyrev, A. S.
Ramirez, L. M. T.
Zoła, Stanisław
Lee, W. H.
Quadri, U.
Ruocco, N.
Li, L.
Dainotti, M. G.
Desai, S.
Pasumarti, V.
Siegel, M. H.
Kalinowski, K. K.
Lambiase, G.
De Simone, B.
Leonini, S.
Chan, L.
Hu, Y -D.
Jindal, I.
Cenko, S. B.
Fuentes, M.
Ramirez-Ruiz, E.
Belkin, S.
Mohideen Malik, R. F.
Opis:
We present the largest optical photometry compilation of gamma-ray bursts (GRBs) with redshifts (z). We include 64813 observations of 535 events (including upper limits) from 28 February 1997 to 18 August 2023. We also present a user-friendly web tool grbLC which allows users to visualize photometry, coordinates, redshift, host galaxy extinction, and spectral indices for each event in our database. Furthermore, we have added a Gamma-ray Coordinate Network (GCN) scraper that can be used to collect data by gathering magnitudes from the GCNs. The web tool also includes a package for uniformly investigating colour evolution. We compute the optical spectral indices for 138 GRBs, for which we have at least four filters at the same epoch in our sample, and craft a procedure to distinguish between GRBs with and without colour evolution. By providing a uniform format and repository for the optical catalogue, this web-based archive is the first step towards unifying several community efforts to gather the photometric information for all GRBs with known redshifts. This catalogue will enable population studies by providing light curves (LCs) with better coverage since we have gathered data from different ground-based locations. Consequently, these LCs can be used to train future LC reconstructions for an extended inference of the redshift. The data gathering also allows us to fill some of the orbital gaps from Swift in crucial points of the LCs, e.g. at the end of the plateau emission or where a jet break is identified.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Subjective Health Complaints of Teachers From Primary and Secondary Schools in Hong Kong
Autorzy:
Chong, E. Y. L.
Chan, A. H. S.
Tematy:
teachers
subjective health complaints
occupational diseases
Pokaż więcej
Wydawca:
Centralny Instytut Ochrony Pracy
Powiązania:
https://bibliotekanauki.pl/articles/91132.pdf  Link otwiera się w nowym oknie
Opis:
This study aimed to investigate the subjective health complaints (SHC) in the teaching profession of Hong Kong. On the basis of the SHC inventory, a questionnaire was prepared for data collection through a mail survey. A total of 1 710 usable questionnaires were returned by the primary or secondary school teachers. The results showed that 99.5% (n = 1 702) of respondents suffered at least one type of the 39 single health problems on the total SHC scale during the preceding 30 days. The 10 most frequently reported health complaints among the teachers were tiredness, eyestrain, anxiety, sleep problems, voice disorder, shoulder pain, neck pain, headache, cold/flu, and lower-back pain. With the exception of the category of pseudoneurological complaints, primary school teachers showed a statistically higher prevalence in reporting problems in 6 of 7 subscales. The 5 most severe complaints were tiredness, eyestrain, sleep problems, shoulder pain, and voice disorder.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reclamation from palm oil mill effluent using an integrated zero discharge membrane-based process
Autorzy:
Ahmad, A. L.
Idris, I.
Chan, C. Y.
Ismail, S.
Tematy:
palm oil mill effluent (POME)
membrane
wastewater
water recycling
carotenes
Pokaż więcej
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Powiązania:
https://bibliotekanauki.pl/articles/778766.pdf  Link otwiera się w nowym oknie
Opis:
This research emphasizes eloquently on membrane technology for treatment of palm oil mill effluent (POME) as it is the Malaysia’s largest and most important agro based industry. Findings established significant quality improvement with an efficient recovery of water from palm oil mill via innovative membrane application. Conventional bio-methods, whilst adhering to the Department of Environment’s (DOE) discharge regulations, produces brownish liquid which pales in comparison to the crystal clear water obtained through membrane treatment. The pre-treatment process consists of coagulation-flocculation using green environmental coagulant bases such as Moringa oleifera (MO) seeds. The ultrafiltration polyvinylidene difluoride (PVDF) and thin film composite (TFC) reverse osmosis were vital for the membrane processes. The system gave 99% suspended solids reduction in suspended solid and 78% of water present was successfully recovered. This technology guarantees water recovery with drinking water quality; meeting the US Environmental Protection Agency (USEPA) standard or could be recycled into the plant with sludge utilization for palm oil estates, thus enabling the concept of zero discharge to be executed in the industries. In addition, green and healthy antioxidants such as oil and beta-carotene can be recovered from POME further demonstrate. Silica gel showed better performance in separation of carotenes from oil at temperature 40°C using adsorption chromatography with 1154.55 ppm. The attractiveness of this technology, enabling the utilization of reuse of agricultural waste into potentially value added products.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mortality and major postoperative complications within one year after vascular surgery : a prospective cohort study
Autorzy:
Williams, Colin
Chan, Matthew T.V.
Montes, Félix R.
Dubois, Luc
Archbold, R. Andrew
Polok, Kamil
Cruz, Patricia
Malaga, German
Studzińska, Dorota
Urrútia, Gerard
Sigamani, Alben
Ackland, Gareth L.
Biccard, Bruce M.
Devereaux, P.J.
Harlock, John
Sapsford, Robert J.
Tittley, Jacques G.
Jacka, Michael J.
Chow, Clara K.
Szalay, David
Szczeklik, Wojciech
Berwanger, Otavio
Górka, Jacek
Cortes, Olga L.
Srinathan, Sadeesh K.
Wang, Chew Yin
Elias, Fadi
Opis:
Introduction: Patients undergoing vascular procedures are prone to developing postoperative complications affecting their short-term mortality. Prospective reports describing the incidence of long-term complications after vascular surgery are lacking. Objectives: We aimed to describe the incidence of complications 1 year after vascular surgery and to evaluate an association between myocardial injury after noncardiac surgery (MINS) and 1-year mortality. Patients and methods: This is a substudy of a large prospective cohort study Vascular Events in Noncardiac Surgery Patients Cohort Evaluation (VISION). Recruitment took place in 28 centers across 14 countries from August 2007 to November 2013. We enrolled patients aged 45 years or older undergoing vascular surgery, receiving general or regional anesthesia, and hospitalized for at least 1 night postoperatively. Plasma cardiac troponin T concentration was measured before the surgery and on the first, second, and third postoperative day. The patients or their relatives were contacted 1 year after the procedure to assess the incidence of major postoperative complications. Results: We enrolled 2641 patients who underwent vascular surgery, 2534 (95.9%) of whom completed 1-year follow-up. Their mean (SD) age was 68.2 (9.8) years, and the cohort was predominantly male (77.5%). The most frequent 1-year complications were myocardial infarction (224/2534, 8.8%), amputation (187/2534, 7.4%), and congestive heart failure (67/2534, 2.6%). The 1-year mortality rate was 8.8% (223/2534). MINS occurred in 633 patients (24%) and was associated with an increased 1-year mortality (hazard ratio, 2.82; 95% CI, 2.14–3.72; P <⁠0.001). Conclusions: The incidence of major postoperative complications after vascular surgery is high. The occurrence of MINS is associated with a nearly 3-fold increase in 1-year mortality.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Wyświetlanie 1-10 z 44

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