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    Wyświetlanie 1-47 z 47
    Tytuł:
    Radio Wolna Europa i Radio Swoboda : lata CIA i późniejsze
    Autorzy:
    Johnson, A. Ross.
    Współwytwórcy:
    Borzym, Andrzej (1948- ). Tłumaczenie
    Kolegium Europy Wschodniej im. Jana Nowaka-Jeziorańskiego. pbl
    Data publikacji:
    2014
    Wydawca:
    Wrocław : Kolegium Europy Wschodniej im. Jana Nowaka-Jeziorańskiego
    Tematy:
    Radio Wolna Europa
    Radio Liberty
    Rozgłośnia radiowa
    Opis:
    Bibliogr. s. 423-[439]. Indeks.
    Dostawca treści:
    Bibliografia CBW
    Książka
    Tytuł:
    Cultural Ergonomics in Ghana, West Africa: A Descriptive Survey of Industry and Trade Workers’ Interpretations of Safety Symbols
    Autorzy:
    Smith-Jackson, T. L.
    Essuman-Johnson, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/91242.pdf
    Data publikacji:
    2002
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    cultural ergonomics
    safety symbols
    culture and organizations
    cross-cultural research and safety
    oznakowanie zagrożeń
    ergonomia
    transfer technologii
    symbole
    ergonomia kultury
    globalizacja
    Opis:
    Globalization and technology transfer have led to the diffusion of risk communications to users from cultures that were not initially viewed as the target users. This study examined industry and trade workers’ overall impressions of symbols used to convey varying degrees of hazardousness. Six symbols, including symbols from the American National Standards Institute (ANSI) Z535 Standard (ANSI, 1998) and the International Organization for Standardization (ISO) 3864:1984 Standard (ISO, 1984) were selected. With the exception of the SKULL symbol, results showed wide discrepancies between users’ perceptions of the symbols and their intended meanings. Implications for cross-cultural research on warning components and risk communications are discussed.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2002, 8, 1; 37-50
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A note on the predual of Lip(S, d)
    Autorzy:
    Johnson, J. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/723328.pdf
    Data publikacji:
    1979
    Wydawca:
    Polska Akademia Nauk. Instytut Matematyczny PAN
    Źródło:
    Colloquium Mathematicum; 1978-1979, 40, 2; 287-289
    0010-1354
    Pojawia się w:
    Colloquium Mathematicum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Quasi-complete ideal lattices
    Autorzy:
    Johnson, Johnny A.
    Powiązania:
    https://bibliotekanauki.pl/articles/725951.pdf
    Data publikacji:
    1975
    Wydawca:
    Polska Akademia Nauk. Instytut Matematyczny PAN
    Źródło:
    Colloquium Mathematicum; 1975, 33, 1; 59-62
    0010-1354
    Pojawia się w:
    Colloquium Mathematicum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Taekwondo diplomacy: new possibilities for peace on the Korean Peninsula
    Autorzy:
    Johnson, John A.
    Vitale, George
    Powiązania:
    https://bibliotekanauki.pl/articles/1923660.pdf
    Data publikacji:
    2018-11-28
    Wydawca:
    PPHU Projack Jacek Wąsik
    Tematy:
    soft diplomacy
    international relations
    sports diplomacy
    International Taekwon-Do Federation (ITF)
    World Taekwondo (WT)
    Opis:
    Sports diplomacy has long been effective in bringing nations and cultures together. Sports diplomacy is a type of soft diplomacy: the more informal diplomatic engagements between non-government entities that sometimes operate with governmental support, but more often as a private exchange. Soft diplomacy has provided governments a place where greater understanding happens, which has in turn led to increased political cooperation. Taekwondo, the Korean martial art turned international Olympic sport, has been used for soft diplomatic purposes almost since its inception. Most recently, the Taekwondo demonstration teams from the Republic of Korea (ROK; South Korea) and the Democratic People's Republic of Korea (DPRK; North Korea) have been used as a tool to bridge the political gap between the two divided nations. The current research introduces a general framework of diplomacy and elucidates the soft diplomacy efforts made by ROK and DPRK Taekwondo organizations in order to provide a foundation for future research on Taekwondo diplomacy and peace negotiations.
    Źródło:
    Physical Activity Review; 2018, 6; 237-250
    2300-5076
    Pojawia się w:
    Physical Activity Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Job Safety Program for Construction Workers Designed to Reduce the Potential for Occupational Injury Using Tool Box Training Sessions and Computer-Assisted Biofeedback Stress Management Techniques
    Autorzy:
    Johnson, K. A.
    Ruppe, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/89956.pdf
    Data publikacji:
    2002
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    job
    safety
    ergonomics
    biofeedback
    stress
    computer-assisted
    training
    ergonomia
    stres
    komputer
    bezpieczeństwo pracy
    szkolenie metodami audiowizualnymi
    szkolenie zawodowe
    budownictwo
    satysfakcja z pracy
    Opis:
    This project was conducted with a multicultural construction company in Hawaii, USA. The job duties performed included drywall and carpentry work. The following objectives were selected for this project: (a) fire prevention training and inspection of first aid equipment; (b) blood-borne pathogen training and risk evaluation; (c) ergonomic and risk evaluation intervention program; (d) electrical safety training and inspection program; (e) slips, trips, and falls safety training; (f) stress assessment and Personal Profile System; (g) safety and health program survey; (h) improving employee relations and morale by emphasizing spirituality; and (i) computer-assisted biofeedback stress management training. Results of the project indicated that observed safety hazards, reported injuries, and levels of perceived stress were reduced for the majority of the population.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2002, 8, 3; 321-329
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    From Individual Heroes to National Performers: The Shift in Taekwondos Peace Promotion Activities
    Autorzy:
    Johnson, John A.
    Lewis, Sanko
    Powiązania:
    https://bibliotekanauki.pl/articles/1922298.pdf
    Data publikacji:
    2020-11-04
    Wydawca:
    PPHU Projack Jacek Wąsik
    Tematy:
    sports diplomacy
    cultural exchange
    karate
    Republic of Korea (ROK)
    People’s Democratic Republic of Korea (DPRK)
    Opis:
    The writings of early taekwondo pioneers promote peace through the practice of the martial art and, later, the combat sport. These pioneers charged taekwondo practitioners with a duty to contribute to justice, defend the weak, and build a more peaceful world. National and international taekwondo organizations such as the Kukkiwon, World Taekwondo (WT), and the International Taekwon-Do Federation (ITF) have taken up the charge of peace promotion through taekwondo by means of transnational events, such as goodwill tours and joint taekwondo demonstrations by adversarial states (e.g., South and North Korea). These activities are soft diplomacy initiatives and have seen some level of success. While these soft diplomacy activities are in line with the goal of peace promotion that the early pioneers advocated, they are qualitatively different from what the pioneers advocated. Originally, the responsibility of peace promotion was on the individual taekwondo practitioner, who ought to cultivate moral character, courage, and martial art skill in order to uphold justice and defend the weak. With the current use of taekwondo for soft diplomacy, the responsibility of peace promotion has shifted from the individual practitioner to the governing bodies, such as WT and the ITF. Instead of focusing on issues surrounding justice and the protection of the weak, these national and international organizations focus on geopolitical cooperation, which is mediated through cultural exchange activities in the form of taekwondo demonstrations. These events involve activities such as acrobatic performances, dance routines, and board breaking that require little combat skill and may not pose the risk of serious injury to the individual practitioners, mainstays of the individual heroes of old. The charge to safeguard justice and physically defend the weak, which are acts of true courage as was envisioned by the taekwondo pioneers, is mostly ignored.
    Źródło:
    Physical Activity Review; 2020, 2, 8; 64-71
    2300-5076
    Pojawia się w:
    Physical Activity Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pathway analysis to determine factors contributing to overall quality scores in four berry crops
    Autorzy:
    Cockerton, H.
    Blanco Unzueta, M.
    Johnson, A.W.
    Vadillo Dieguez, A.
    Fernandez Fernandez, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/1077482.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Ogrodnictwa
    Tematy:
    berry plant
    blackberry
    blueberry
    raspberry
    strawberry
    fruit quality
    environmental factor
    agronomic factor
    genetic factor
    berry crop
    Opis:
    Fruit quality attributes are influenced by environmental, agronomic and genetic factors; both cultivars and growing conditions can vary substantially between UK production and imported fruit. This study aimed to record and dissect the most relevant fruit quality traits for berries imported into the UK in the winter months. Blackberry, blueberry, raspberry and strawberry fruit were imported from 11 countries into a Kent-based packhouse (UK) or purchased from major retailers between December 2018 and March 2019. Multiple fruit quality components were assessed for relative contribution towards a high “overall assessment” fruit quality score. It was found that strawberry and blackberry overall scores were affected by sweetness perception, whereas blueberry and raspberry organoleptics are more complex, with overall scores influenced by flavor perception. Multiple raspberry and strawberry fruit quality traits were found to be associated with genotypic differences, indicating a promising potential for genetic improvement through breeding. By contrast, the study findings suggest that there is less potential for genetic improvement in blueberry, and that the environment may have a large effect on blueberry fruit quality traits.
    Źródło:
    Journal of Horticultural Research; 2020, 28, 2; 35-42
    2300-5009
    Pojawia się w:
    Journal of Horticultural Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Photocatalytic degradation of ampicillin using silver nanoparticles biosynthesised by Pleurotus ostreatus
    Autorzy:
    Jassal, P.S.
    Khajuria, R.
    Sharma, R.
    Debnath, P.
    Verma, S.
    Johnson, A.
    Kumar, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2096973.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    ampicillin
    FTIR
    photocatalysis
    silver nanoparticles (Ag-NPs)
    TEM
    Opis:
    The past few decades have witnessed a tremendous increase in the consumption of antibiotics worldwide. This rampant and unregulated use of antibiotics and their improper disposal has led to the accumulation of these drugs in the environment. This in turn has led to the emergence of antibiotic resistance in microbes and has become one of the most pressing global concerns in medicine, with highly resistant pathogens of many species proving difficult to treat. The aim of the study was to synthesise silver nanoparticles (Ag-NPs) using white rot fungus, Pleurotus ostreatus and assess its potential to carry out photocatalytic degradation of ampicillin. UV–Vis spectroscopy, Fourier transform infrared spectroscopy and transmission electron microscope have been used to characterize biosynthesized Ag-NPs. The photocatalytic degradation of ampicillin in aqueous solution by Ag-NPs was evaluated under natural sunlight. The effect of the operating conditions (contact time, Ag-NP concentration and initial ampicillin concentration) on the photocatalytic degradation was also investigated. The highest ampicillin degradation of 96.5% was observed after exposure of the solution (antibiotic + nanoparticles) for 4 h in sunlight. The maximum degradation was observed at an Ag-NP concentration of 5 ppm at pH 6. To the best of our knowledge, photocatalytic degradation of ampicillin using Ag-NPs synthesised by P. ostreatus has not been reported earlier.
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2020, 101, 1; 5-14
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical investigation and sensitivity analysis of turbulent heat transfer and pressure drop of Al2O3/H2O nanofluid in straight pipe using response surface methodology
    Autorzy:
    Fadodun, Olatomide G.
    Amosun, Adebimpe A.
    Salau, Ayodeji O.
    Olaloye, David O.
    Ogundeji, Johnson A.
    Ibitoye, Francis I.
    Balogun, Fatai A.
    Powiązania:
    https://bibliotekanauki.pl/articles/239962.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    nusselt number
    Reynolds number
    pressure drop
    response surface methodology
    nanofluid
    single phase flow
    Opis:
    In this paper, investigation of the effect of Reynolds number, nanoparticle volume ratio, nanoparticle diameter and entrance temperature on the convective heat transfer and pressure drop of Al2O3/H2O nanofluid in turbulent flow through a straight pipe was carried out. The study employed a computational fluid dynamic approach using single-phase model and response surface methodology for the design of experiment. The Reynolds average Navier-Stokes equations and energy equation were solved using k-ε turbulent model. The central composite design method was used for the response-surface-methodology. Based on the number of variables and levels, the condition of 30 runs was defined and 30 simulations were performed. New models to evaluate the mean Nusselt number and pressure drop were obtained. Also, the result showed that all the four input variables are statistically significant to the pressure drop while three out of them are significant to the Nusslet number. Furthermore, sensitivity analysis carried out showed that the Reynolds number and volume fraction have a positive sensitivity to both the mean Nusselt number, and pressure drop, while the entrance temperature has negative sensitivities to both.
    Źródło:
    Archives of Thermodynamics; 2020, 41, 1; 3-30
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    CUBAN SOFT POWER: FROM REVOLUTIONARY CHARISMA TO SOCIAL DIPLOMACY
    Autorzy:
    DA SILVA, Marcos Antonio
    VRECHE, Carla Cristina
    JOHNSON, Guillermo A.
    Powiązania:
    https://bibliotekanauki.pl/articles/555844.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Warszawski. Instytut Studiów Iberyjskich i Iberoamerykańskich
    Tematy:
    Cuban Revolution
    Soft Power
    Social Diplomacy
    Opis:
    This article analyzes the international projection of the Cuban Revolution, discussing the contours of its soft power that contributed to international reintegration. After this concept discussing briefly and focusing on the transformation of contemporary international scene, it analyzes the change of use of soft power in the revolutionary process in Cuba. In this sense, it points out that such power was, in the golden years of the Revolution (the 60s and the 70s), based on the revolutionary aura and the charisma of its leaders (Fidel Castro, Che Guevara and others) and that, in the first decade of this century, it acquired new supported contours through the emergence of Social Diplomacy, i.e. cooperation in the field of social services (health, education and sports, among others), thus contributing.
    Źródło:
    Ameryka Łacińska. Kwartalnik analityczno-informacyjny; 2016, 24, 4(94); 43-61
    1506-8900
    2081-1152
    Pojawia się w:
    Ameryka Łacińska. Kwartalnik analityczno-informacyjny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Earth solids and dynamic nonlinear elasticity
    Autorzy:
    Johnson, P. A.
    Van Den Abeele, K. E-A., K. E-A.
    Powiązania:
    https://bibliotekanauki.pl/articles/331628.pdf
    Data publikacji:
    1997
    Wydawca:
    Polskie Towarzystwo Akustyczne
    Opis:
    The nonlinear response of rock is much different than that of ordinary materials. Especially at ambient conditions, rock responds in an extremely nonlinear fashion, often due to the presence of hysteresis. Nonlinear elastic response in rock is illustrated by dynamic results from resonant bar and pulse-mode experiments.
    Źródło:
    Hydroacoustics; 1997, 1; 53-58
    1642-1817
    Pojawia się w:
    Hydroacoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Directions in vehicle efficiency and emissions
    Autorzy:
    Johnson, T. V.
    Joshi, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/133977.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    greenhouse gases
    vehicle emissions
    regulations
    engines
    aftertreatment
    NOx
    diesel oxidation catalyst
    selective catalytic reduction
    diesel particulate filter
    gasoline particulate filter
    gazy cieplarniane
    przepisy prawne
    silniki
    katalizator utleniania oleju napędowego
    selektywna redukcja katalityczna
    filtr cząstek stałych
    Opis:
    This paper provides a general review of light-duty (LD) and heavy-duty (HD) regulations, engine technology, and key emission control strategies. The US is placing a stronger emphasis on laboratory emissions, and the LD regulations are about an order of magnitude tighter than Euro 6, but Europe is focusing on real-world reductions. The California HD low-NOx regulation is advancing and may be proposed in 2017/18 for implementation in 2023+. The second phase of US HD greenhouse gas regulations propose another 25-30% tightening beyond Phase 1, beginning in 2021. LD and HD engine technology continues showing marked improvements in engine efficiency. LD gasoline concepts are closing the gap with diesel. HD engines are demonstrating more than 50% BTE using methods that can reasonably be commercialized. LD and HD diesel NOx technology trends are also summarized. NOx storage catalysts and SCR combinations are the lead approach to meeting the LD regulations. Numerous advanced NOx technologies are being evaluated and some promise for meeting the California HD low NOx targets. Oxidation catalysts are improved for both diesel and methane oxidation applications. Gasoline particulate filters (GPF) are the lead approach to reducing particles from gasoline direct injection (GDI) engines. They reduce PAH emissions, and catalyzed versions can be designed for low back pressure. Regeneration largely occurs during hot decelerations.
    Źródło:
    Combustion Engines; 2016, 55, 3; 3-8
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Inexorable Carbon Capture & Sequestration and its Indian Scenario
    Autorzy:
    Thaslim, K. A. Muhammed
    Johnson, Jeffy
    Powiązania:
    https://bibliotekanauki.pl/articles/1191237.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    CCS
    Carbon Capture; Carbon sequestration; Climate change; Carbon footprint; Environmnet
    GHG emissions
    Opis:
    The drastic increase in the emission of CO2 (carbon dioxide) during the last 30 years caused by fossil fuel combustion has been identified as the major reason for the climate change. Demand for fossil fuels has begun to decline in the developed world, however, demand in developing countries has been rising and will continue to rise. India in its developing phase has been risen as one of the major emitting nations since they hugely rely on fossil fuels. And opting alternate energy sources wouldn’t suffice for meeting the obligatory values of emission. While the global frameworks for climate change demands for limiting the temperature rise within 2 °C, more mitigation technologies other than renewable energy and energy efficiency are searched for, where Carbon Capture & Sequestration pitch in. In this paper we discuss about the capacity of CCS as a climate mitigation tool and additionally evaluates the feasibility of implementation in Indian market.
    Źródło:
    World Scientific News; 2016, 54; 110-131
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Polyamines and cell migration
    Autorzy:
    McCormack, S.A.
    Johnson, L.R.
    Powiązania:
    https://bibliotekanauki.pl/articles/70020.pdf
    Data publikacji:
    2001
    Wydawca:
    Polskie Towarzystwo Fizjologiczne
    Tematy:
    cytoskeleton
    spermine
    polyamine
    ornithine decarboxylase
    microtubule
    cell migration
    actin polymerization
    putrescine
    spermidine
    Źródło:
    Journal of Physiology and Pharmacology; 2001, 52, 3
    0867-5910
    Pojawia się w:
    Journal of Physiology and Pharmacology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Prevalence of work-related musculoskeletal disorders among hairdressers
    Autorzy:
    Aweto, Happiness A.
    Tella, Bosede A.
    Johnson, Omobolanle Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/2177366.pdf
    Data publikacji:
    2015-05-15
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    prevalence
    workplace
    musculoskeletal abnormalities
    occupational health
    hairdressers
    Opis:
    Objectives This study has investigated the prevalence of work-related musculoskeletal disorders (WMSDs), the most commonly affected body parts, the risk factors of WMSDs and the coping strategies adopted by hairdressers. Material and Methods The study design was a cross-sectional descriptive survey design. Two hundred and ninety-nine hairdressers (242 females and 57 males) from salons in Surulere and Mushin Local Government Areas of Lagos State completed a 27-item questionnaire. They were selected using a non-probability consecutive sampling technique. The inferential analysis was conducted using the Chi² test. The level of significance stood at p < 0.05. Results The 12-month prevalence of musculoskeletal disorders stood at 75.6%. Two hundred and twenty-one (91.3%) participants reported gradual onset of musculoskeletal disorders. One hundred and sixteen (47.9%) participants had the onset of the WMSDs at the age range of 26–35 years. The most commonly affected body parts included the low back (76.3%), shoulder (62.5%) and neck (46.3%). Some of the major job risk factors of the WMSDs that were identified included: working in the same position for long periods and attending to a large number of customers in 1 day. Taking sufficient rest breaks by participants was one of the coping strategies adopted by the participants. The mean number of years of working experience was 7.85±0.4 years. One hundred and twenty-four (41.5%) participants had worked for 1–5 years. The Chi² analysis showed that the prevalence of musculoskeletal disorders were significantly associated with the age of a participant (Chi² = 78.78, p = 0.001), years of working experience (Chi² = 78.03, p = 0.001) and hours spent working in a standing position (Chi² = 8.77, p = 0.01), respectively. Conclusions The age of hairdressers, their years of working and the long hours they spent working in a standing position may be significant factors that contribute to the high prevalence of the WMSDs among them. The most commonly affected body parts included the low back, shoulders and neck.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2015, 28, 3; 545-555
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An Overview of the Canadian Health Care System
    Autorzy:
    Bielska, Iwona A.
    Hampel, Elizabeth M.
    Johnson, Ana P.
    Powiązania:
    https://bibliotekanauki.pl/articles/635288.pdf
    Data publikacji:
    2012
    Wydawca:
    Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
    Tematy:
    Canada
    delivery of health care
    economics
    financing
    health services
    ekonomika zdrowia
    finansowanie
    Kanada
    świadczenie usług zdrowotnych
    usługi zdrowotne
    Opis:
    The Canadian health care system is a publicly financed system administered by ten provincial and three territorial governments. The purpose of this article is to provide an overview of the universal health care system in Canada, including its history, the health status of Canadians, health care funding and spending, and health research and data collection. Health care spending in Canada amounts to 11.6% of the country’s gross domestic product and is estimated to have been $200.5 billion Canadian dollars in 2011. Hospitals account for the largest source of health care spending (29%), followed by drugs (16%) and physician spending (14%). Of the total health care spending, 70% is paid for by the public system. Due to the Canadian population being covered by the universal health care system, health data are being collected and can be used to monitor the health care system and inform evidence-based medicine.
    Źródło:
    Zdrowie Publiczne i Zarządzanie; 2012, 10, 1; 51-56
    2084-2627
    Pojawia się w:
    Zdrowie Publiczne i Zarządzanie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Valence Band Electronic Structure of HgMSe (M=Mn, Fe, Co)
    Autorzy:
    Guziewicz, A.
    Kowalski, B. J.
    Orłowski, B. A.
    Ghijsen, J.
    Johnson, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1931745.pdf
    Data publikacji:
    1994-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    79.60.Eq
    71.20.Fi
    Opis:
    The synchrotron radiation in the energy range between 40 and 80 eV was applied to investigate the electronic structure of Hg$\text{}_{0.7}$Mn$\text{}_{0.3}$Se, Hg$\text{}_{0.88}$Fe$\text{}_{0.12}$Se and Hg$\text{}_{0.93}$Co$\text{}_{0.07}$Se crystals by means of the resonant photoemission spectroscopy. The set of energy distribution curves was measured in the region near the M (M = Mn 3d$\text{}^{5}$, Fe 3d$\text{}^{6}$, Co 3d$\text{}^{7}$) 3p-3d transitions. In order to determine thoroughly the Fano type resonance energy the constant initial states curves were measured.
    Źródło:
    Acta Physica Polonica A; 1994, 86, 5; 817-823
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Contribution of Mn 3d Electrons To the Valence Band of Sn$\text{}_{0.9}$Mn$\text{}_{0.1}$te
    Autorzy:
    Nadolny, A. J.
    Guziewicz, E.
    Kowalski, B. J.
    Orłowski, B. A.
    Johnson, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1992049.pdf
    Data publikacji:
    1998-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    79.60.-i
    71.20.Nr
    Opis:
    The synchrotron radiation in the energy range between 15 and 70 eV was used to investigate the electronic structure of the crystalline Sn$\text{}_{0.9}$Mn$\text{}_{0.1}$Te by means of the resonant photoemission spectroscopy. Fano-type resonance has been observed in the obtained constant initial energy curves with the resonant energy 50.6 eV and antiresonant energy 49.0 eV. The energy distribution curves taken at photon energies close to the Mn 3p-3d transitions allow us to conclude that Mn atoms contribute to the valence band mainly at energies of 4.0 eV and 7.8 eV below the valence band edge.
    Źródło:
    Acta Physica Polonica A; 1998, 94, 3; 454-458
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new neolepadid cirripede from a Pleistocene cold seep, Krishna-Godavari Basin, offshore India
    Autorzy:
    Gale, A.S.
    Little, C.T.S.
    Johnson, J.E.
    Giosan, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/2082175.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Cirripedia
    Thoracica
    Neolepadidae
    cold seep
    Pleistocene
    Indian Ocean
    Opis:
    Valves of a thoracican cirripede belonging to a new species of the Neolepadidae, Ashinkailepas indica Gale sp. nov. are described from a Late Pleistocene cold seep (52.6 ka), cored in the Krishna-Godavari Basin, offshore from the eastern coast of India. This constitutes the first fossil record of the genus, and its first occurrence in the Indian Ocean. Other fossil records of the Neolepadidae (here elevated to full family status) are discussed, and it is concluded that only Stipilepas molerensis from the Eocene of Denmark, is correctly referred to the family. Cladistic analysis of the Neolepadidae supports a basal position for Ashinkailepas, as deduced independently from molecular studies, and the Lower Cretaceous brachylepadid genus Pedupycnolepas is identified as sister taxon to Neolepadidae. Neolepadids are not Mesozoic relics as claimed, preserved in association with the highly specialised environments of cold seeps and hydrothermal vents, but are rather an early Cenozoic offshoot from the clade which also gave rise to the sessile cirripedes.
    Źródło:
    Acta Palaeontologica Polonica; 2020, 65, 2; 351-362
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Self-reported physical activity versus physical function capacity: alternatives for energy expenditure estimation
    Deklarowany poziom aktywności fizycznej a wydolność funkcjonalna: alternatywy dla oceny wydatku energetycznego
    Autorzy:
    Mbada, Chidozie E
    Osifeso, Temitope A
    Johnson, Olubusola E
    Okonji, Adaobi M
    Odeyemi, Emmanuel A
    Powiązania:
    https://bibliotekanauki.pl/articles/1798624.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Wychowania Fizycznego im. Bronisława Czecha w Krakowie
    Tematy:
    physical activity
    exercise capacity
    energy expenditure
    cardiovascular parameters
    perceived exertion rate
    aktywność fi zyczna
    wydolność wysiłkowa
    wydatek energetyczny
    parametry układu sercowo-naczyniowego
    skala odczuwania
    wysiłku
    Opis:
    The extent to which self-report activity measured by the International Physical Activity Questionnaire (IPAQ) can substitute performance-based functional capacity measured by the Six-Minute Walk Test (6MWT) remains inconclusive. This study assessed Physical Activity (PA) and Functional Exercise Capacity (FEC); and also determined the relationship between PA and FEC in apparently healthy young adults. A total of 342 (145 males and 197 females) undergraduates of Obafemi Awolowo University, Ile-Ile, Nigeria participated in the study. The IPAQ was used to assess PA, while FEC was assessed using the 6MWT, and expressed in terms of the Six-Minute Walk Distance (6MWD), Six-Minute Walk Work (6MWW), Maximum Oxygen Uptake (VO2max) and Metabolic Equivalent (METS). Anthropometric and cardiovascular parameters were measured following standardized procedures. Data was analyzed using descriptive and inferential statistics. The alpha level was set at 0.05. The mean age of the participants was 22.0±2.87 years. The mean IPAQ score of all participants was 1471.4±1086.93. The percentage for low, moderate and high PA was 19% (65), 41.2% (141) and 39.8% (136), respectively. The mean 6MWD, 6MWW, VO2max and METS were 639.47 ±66.6 m, 41805.0 ±8520.6 kg·m, 28.9 ±1.92 mlO2k-1min-1, 4.05 ±0.32 mL/kg, respectively. There were signifi cant positive correlations between PA and each of the 6MWD (r=0.268; p=0.001), 6MWW (r=0.219; p=0.001), VO2max (r=0.268; p=0.001), METS (r=0.268; p=0.001). Measures of exercise capacity were not signifi cantly correlated with the anthropometric variables (p>0.05). Self-report of physical activity in healthy young adults does not adequately substitute the results of the Six-Minute Walk Test. Mbada Ch.E., Osifeso T.A., Johnson O.E., Okonji A.M., Odeyemi E.A. Self-reported physical activity versus physical function capacity: alternatives for energy expenditure estimation. Med Rehabil 2016; 20(4): 4-12. DOI: 10.5604/01.3001.0009.5479 null
    Wstęp: Stopień, w jakim deklarowana aktywność fizyczna oceniania za pomocą Międzynarodowego Kwestionariusza Aktywności Fizycznej (IPAQ) może zastąpić opartą o wyniki wydolność funkcjonalną mierzoną testem 6-minutowego chodu (6MWT) pozostaje niejednoznaczny. W badaniu tym oceniano aktywność fizyczną (AF) i funkcjonalną wydolność wysiłkową (FEC); a także określono zależność pomiędzy PA i FEC u pozornie zdrowych, młodych dorosłych. Materiał i metody: Badaniem objęto 342 studentów (145 mężczyzn i 197 kobiet) z Obafemi Awolowo University, Ile-Ile, Nigeria. IPAQ został wykorzystany do oceny AF, podczas gdy FEC oceniano za pomocą 6MWT i wyrażono w sześciominutowym dystansie chodu (6MWD), pracy wykonanej podczas sześciominutowego chodu (6MWW), maksymalnym minutowym poborze tlenu (VO2max) i równoważniku metabolicznym (MET). Parametry antropometryczne i układu krążenia były mierzone zgodnie ze standardowymi procedurami. Dane analizowano przy użyciu wnioskowania statystycznego i opisowego. Poziom alfa został ustalony na poziomie 0,05. Wyniki: Średni wiek uczestników wyniósł 22,0 ±2,87 lat. Średni wynik IPAQ wszystkich uczestników to 1471,4 ±1086,93. Procent dla niskiego, średniego i wysokiego poziomu AF to odpowiednio 19% (65), 41,2% (141) i 39,8% (136). Średni 6MWD, 6MWW, VO2max i METS wyniosły odpowiednio 639.47 ±66,6 m, 41805.0±8520,6 kg·m, 28,9±1,92 mlO2k-1min-1, 4,05±0,32 ml/kg. Istnieją znaczące dodatnie korelacje pomiędzy PA i każdym z 6MWD (r=0,268, p=0,001), 6MWW (r=0,219, p=0,001), VO2max (r=0,268, p=0,001), METS (r=0,268; p=0,001). Miary wydolności wysiłkowej nie były istotnie skorelowane ze zmiennymi antropometrycznymi (p>0,05). Wnioski: Deklarowany poziom aktywności fizycznej u zdrowych młodych dorosłych nie jest adekwatny do wyników testu sześciominutowego marszu.
    Źródło:
    Medical Rehabilitation; 2016, 20(4); 4-12
    1427-9622
    1896-3250
    Pojawia się w:
    Medical Rehabilitation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Health Care Resource Utilization after Acute Ankle Sprains
    Autorzy:
    Bielska, Iwona A.
    Pickett, William
    Brison, Robert
    Brouwer, Brenda
    Johnson, Ana P.
    Powiązania:
    https://bibliotekanauki.pl/articles/635205.pdf
    Data publikacji:
    2012
    Wydawca:
    Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
    Tematy:
    ankle sprains
    health resources
    productivity loss
    Canada
    Kanada
    urazy stawu skokowego
    utrata zdolności do pracy
    zasoby ochrony zdrowia
    Opis:
    Ankle sprains are common soft-tissue injuries that are often treated in emergency departments. These injuries can have significant consequences for the patient, including long-term morbidity and loss of productivity. The objective of this study was to examine the direct and indirect health resource utilization associated with ankle sprains. 296 adult patients with acute ankle sprains participated in the study in Kingston, Ontario, Canada. Data were collected using a one-month productivity questionnaire. Overall, 11% (95% CI, 8-15%) of the participants visited a physician following the initial emergency department visit. Almost all (95%; 95% CI, 92-97%) of the participants used medications or supportive treatments and 55% (95% CI, 50-61%) reported taking time off from work, school, or housework. The use of unpaid assistance was indicated by 56% (95% CI, 50-62%). Findings from this analysis highlight the significant patient-related and health care system burden of acute ankle sprains.
    Źródło:
    Zdrowie Publiczne i Zarządzanie; 2012, 10, 2; 106-110
    2084-2627
    Pojawia się w:
    Zdrowie Publiczne i Zarządzanie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Resonant Photoemission Spectra of Zn$\text{}_{1-x}$Co$\text{}_{x}$S Valence Band
    Autorzy:
    Kowalski, B. J.
    Gołacki, Z.
    Guziewicz, A.
    Orłowski, B. A.
    Mašek, J.
    Ghijsen, J.
    Johnson, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1931761.pdf
    Data publikacji:
    1994-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    79.60.-i
    71.20.Fi
    Opis:
    We report the results of a resonant photoemission study of Zn$\text{}_{1-x}$Co$\text{}_{x}$S. A Co 3d derived contribution to the valence band spectra was revealed as a 5 eV wide structure with two maxima: at the edge of the valence band and about 4 eV below the edge. The results were compared with the total DOS distribution resulting from tight binding-coherent potential approximation calculations.
    Źródło:
    Acta Physica Polonica A; 1994, 86, 5; 831-836
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of 4f Level in Samarium-Rich MBE Grown CdSmTe Sample
    Autorzy:
    Szamota-Sadowska, K.
    Gołacki, Z.
    Orłowski, B. A.
    Boyn, R.
    Johnson, R. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1991645.pdf
    Data publikacji:
    1998-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    73.20.At
    79.60.-i
    79.60.Bm
    Opis:
    Electronic states of 4f samarium ions were investigated by photoemission spectroscopy in samarium-rich CdSmTe sample obtained by MBE. The photon energy of synchrotron radiation allowed to investigate Fano-type resonance and antiresonance. The energy distribution curve spectra were attributed to the Sm 4d-4f transition. The shape of the constant initial states spectra was compared with this one obtained for atomic samarium.
    Źródło:
    Acta Physica Polonica A; 1998, 94, 3; 560-564
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fe 3d Contribution to the Valence Band of Cubic Hg$\text{}_{1-x}$Fe$\text{}_{x}$S - Resonant Photoemission Study
    Autorzy:
    Kowalski, B. J.
    Orłowski, B. A.
    Szuszkiewicz, W.
    Witkowska, B.
    Johnson, R. L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1933837.pdf
    Data publikacji:
    1995-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    79.60.-i
    Opis:
    Resonant photoemission spectra of cubic Ηg$\text{}_{0.94}$Fe$\text{}_{0.06}$S were measured for photon energies near to the energy of intra atomic Fe 3p$\text{}^{6}$3d$\text{}^{6}$ → 3p$\text{}^{5}$3d$\text{}^{7}$ transition. The difference between the spectra taken at resonance and antiresonance is presented as a measure of the energy distribution of Fe 3d derived states. The results obtained show that Fe 3d states contribute to the whole valence band with a distinct structure appearing at the band edge.
    Źródło:
    Acta Physica Polonica A; 1995, 88, 4; 791-794
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Gd 4f and 5d Electrons in Sn$\text{}_{0.96}$Gd$\text{}_{0.04}$Te Valence Band
    Autorzy:
    Orłowski, B. A.
    Kowalski, B. J.
    Gołacki, Z.
    Story, T.
    Johnson, R. L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1933933.pdf
    Data publikacji:
    1995-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    79.60.-i
    71.20.Fi
    Opis:
    The synchrotron radiation was applied to measure resonant photoemission spectra (Fano-type Gd 4d-4f resonance), constant initial states and constant final states to study the valence band electronic structure of Sn$\text{}_{0.96}$Gd$\text{}_{0.04}$Te crystal. The resonant energy was found equal to 150.3 eV. The electrons 4f were found to contribute to the valence band of the crystal with the maximum located at 9.5 eV below the valence band edge whereas 5d electrons contribute at the crystal valence band edge.
    Źródło:
    Acta Physica Polonica A; 1995, 88, 5; 857-860
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Photoemission Study of Mn 3d Electrons in the Valence Band of Mn/GeMnTe
    Autorzy:
    Pietrzyk, M. A.
    Kowalski, B. J.
    Orłowski, B. A.
    Knoff, W.
    Osinniy, V.
    Kowalik, I. A.
    Story, T.
    Johnson, R. L.
    Powiązania:
    https://bibliotekanauki.pl/articles/2047678.pdf
    Data publikacji:
    2007-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    79.60.-i
    71.20.Mq
    Opis:
    We present the results of the electronic band structure study of Ge$\text{}_{0.9}$Mn$\text{}_{0.1}$Te epilayers, clean and modified in situ by deposition of manganese atoms. The sets of resonant photoemission spectra were measured for the photon energy range covering the energy of Mn 3p→3d transition (45
    Źródło:
    Acta Physica Polonica A; 2007, 112, 2; 275-281
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Indigenous Fisherman Divers of Thailand: Diving-Related Mortality and Morbidity
    Autorzy:
    Gold, D.
    Geater, A.
    Aiyarak, S.
    Wongcharoenyong, S.
    Juengprasert, W.
    Johnson, M.
    Skinner, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/90406.pdf
    Data publikacji:
    2000
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    indigenous divers
    Thailand
    mortality
    decompression illness
    nurkowanie
    Tajlandia
    choroba dekompresyjna
    Opis:
    The Urak Lawoi are indigenous fishermen on Thailand’s west coast. The population includes an estimated 400 divers who dive using surface-supplied compressed air. In a cross-sectional survey conducted among the 6 major communities of Urak Lawoi, questionnaire-based interviews were administered to active divers, ex-divers, and families or colleagues of divers who had died in the previous 5 years. Six deaths resulting from diving-related accidents were identified, indicating a diving-related mortality rate of approximately 300 per 100,000 person-years, while in the same 5-year period 11 divers had been disabled owing to diving-related events, indicating a diving-related disabling event rate of approximately 550 per 100,000 person-years. Among 342 active divers interviewed, one third reported having suffered from decompression illness, although based on reported current symptoms over 50% were classified as suffering from recurring non-disabling decompression illness. Physical examination conducted on a subset of 98 active divers revealed the presence of spinal injury (clonus, raised muscle tone, and heightened reflexes) and of joint damage (pain in one or more joint, crepitus, or restricted movement) in 24 and 30% respectively. Improved primary prevention and medical treatment are needed to reduce mortality and morbidity among this population.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2000, 6, 2; 147-167
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cd_{1-x}Fe_{x}Te Ternary Crystal Formation Studied by Resonant Photoemission
    Autorzy:
    Guziewicz, E.
    Kowalski, B. J.
    Gołacki, Z.
    Orłowski, B. A.
    Johnson, R. L.
    Masek, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1968113.pdf
    Data publikacji:
    1997-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    68.35.Fx
    79.60.-i
    Opis:
    A resonant photoemission was used to study the ternary crystal formation, when small amount of Fe atoms was deposited (in one monolayer range of thickness) on the clean CdTe(100) surface. The constant initial state spectra taken near the Fe 3p-3d transition after Fe deposition and then again after heating process show the existence of two Fano-like resonance. The differences of the energy distribution curves taken for both resonance and antiresonance, respectively, allow us to distinguish two kind of Fe 3d contributions to the valence band: one derived from the metallic Fe islands on the surface and the second - derived from the Fe atoms built into the Cd$\text{}_{1-x}$Fe$\text{}_{x}$Te crystal.
    Źródło:
    Acta Physica Polonica A; 1997, 92, 4; 793-796
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    4f Contribution to Valence Band of Pb$\text{}_{1-x}$RE$\text{}_{x}$S (RE = Eu,Gd) Studied by Resonant Photoemission
    Autorzy:
    Kowalski, B. J.
    Gołacki, Z.
    Guziewicz, E.
    Orłowski, B. A.
    Ghijsen, J.
    Johnson, R. L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1952558.pdf
    Data publikacji:
    1996-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    71.25.Tn
    79.60.-i
    Opis:
    Resonant photoemission experiments were carried out in order to reveal the contributions of partly filled Eu 4f$\text{}^{7}$ and Gd 4f$\text{}^{7}$ shells to the valence bands of Pb$\text{}_{0.95}$Eu$\text{}_{0.05}$S and Pb$\text{}_{0.95}$Gd$\text{}_{0.05}$S crystals. The coupling between these orbitals and the host electronic states is discussed.
    Źródło:
    Acta Physica Polonica A; 1996, 90, 5; 1035-1039
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Resonant Photoemission Study of Gd 4f States in IV-VI Crystals
    Autorzy:
    Kowalski, B. J.
    Gołacki, Z.
    Guziewicz, E.
    Orłowski, B. A.
    Ghijsen, J.
    Johnson, R. L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1963391.pdf
    Data publikacji:
    1997-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    79.60.-i
    Opis:
    Resonant photoemission experiments were performed in order to reveal the contributions of half-filled Gd 4f$\text{}^{7}$ shell to the electronic structures of Sn$\text{}_{0.95}$Gd$\text{}_{0.05}$Te and Pb$\text{}_{0.95}$Gd$\text{}_{0.05}$S crystals. The influences of the Gd 4f$\text{}^{6}$ final-state multiplet splitting and f-ligand hybridization on the shapes of the spectra are discussed.
    Źródło:
    Acta Physica Polonica A; 1997, 91, 4; 819-823
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Valence Band Density of States and Mn 3d Contribution in Mn$\text{}_{1-x}$Mg$\text{}_{x}$Te
    Autorzy:
    Kowalski, B. J.
    Guziewicz, E.
    Kopalko, K.
    Orłowski, B. A.
    Janik, E.
    Wojtowicz, T.
    Johnson, R. L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1991616.pdf
    Data publikacji:
    1998-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    71.20.Nr
    79.60.-i
    Opis:
    Resonant photoemission spectroscopy was applied to determine the Mn 3d derived contribution to the valence band density of states of Mn$\text{}_{0.44}$ Mg$\text{}_{0.56}$Te grown by molecular beam epitaxy on a GaAs(001) substrate. The modifications of the valence band density-of-states distribution are discussed as a consequence of the substitution of Mg ions for Mn ions.
    Źródło:
    Acta Physica Polonica A; 1998, 94, 3; 401-405
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Band Structure of Mn/ZnTe Studied, by Angle-Resolved Photoelectron Spectroscopy
    Autorzy:
    Kowalski, B. J.
    Orlowski, B. A.
    Pietrzyk, M.
    Kaczor, P.
    Kopalko, K.
    Mickievicius, S.
    Johnson, R. L.
    Powiązania:
    https://bibliotekanauki.pl/articles/2044491.pdf
    Data publikacji:
    2005-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    79.60.-i
    71.23.-k
    Opis:
    The electronic band structure of Mn/ZnTe(110) (1×1) has been studied by angle-resolved photoelectron spectroscopy. The sets of spectra were acquired for the clean surface and after in situ deposition of 0.4 ML of Mn, in order to compare the band structures and to reveal changes brought about by the presence of Mn. The experimental band structure diagram of Mn/ZnTe along theΓ-K direction in the Brillouin zone has been derived from the experimental data. Indications of interaction between the Mn 3d states and sp$\text{}^{3}$ bands of the semiconductor are discussed.
    Źródło:
    Acta Physica Polonica A; 2005, 108, 5; 735-740
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Resonant Photoemission Study of Mn 3d Electrons Contribution to the Pb$\text{}_{0.92}$Mn$\text{}_{0.08}$Se Valence Band
    Autorzy:
    Orłowski, B. A.
    Kowalski, B. J.
    Le Van, Khoi
    Gałązka, R. R.
    Ghijsen, J.
    Johnson, R. L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1872563.pdf
    Data publikacji:
    1995-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    71.20.Fi
    79.60.-i
    Opis:
    The resonant photoemission spectroscopy was applied to investigate the valence band electronic structure of semimagnetic semiconductor Pb$\text{}_{0.92}$Mn$\text{}_{0.08}$Se crystal and to determine the contribution of Mn 3d electrons to the valence band. The set of energy distribution curves and constant initial states spectra were taken for by energies in the region (40-60 eV) close to the Mn 3p-3d transition. The electrons Mn 3d hybridize and contribute to the valence band electrons of the crystal and main density of states contribution appears in the energy 3.5 ± 0.2 eV below the valence band edge.
    Źródło:
    Acta Physica Polonica A; 1995, 87, 2; 329-332
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cr 3d Surface and Bulk States in Sn$\text{}_{1-x}$Cr$\text{}_{x}$Te/Cr Crystals
    Autorzy:
    Guziewicz, E.
    Szamota-Sadowska, K.
    Kowalski, B. J.
    Grodzicka, E.
    Story, T.
    Orłowski, B. A.
    Johnson, R. L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1963380.pdf
    Data publikacji:
    1997-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    68.35.Fx
    79.60.-i
    Opis:
    We report a new approach to investigate metal-semiconductor interface formation. Photoemission spectroscopy was applied in order to investigate the clean surface of a Sn$\text{}_{0.97}$Cr$\text{}_{0.03}$ Te crystal and to observe its changes under sequential deposition of small amounts of Cr atoms. In order to analyse the Cr 3d contribution to the valence band, the Fano-type resonance tuned to the Cr 3p-3d transition was used. The experiment was designed to follow the Sn$\text{}_{0.97}$Cr$\text{}_{0.03}$ Te/Cr interface formation process. At the clean Sn$\text{}_{0.97}$Cr$\text{}_{0.03}$Te surface, the Cr 3d states contribution to the valence band was found to be positioned 0.8 eV below the Fermi level. After the Cr deposition processes the contribution shifted to a higher binding energy and another contribution 5.8 eV below the Fermi level was also observed.
    Źródło:
    Acta Physica Polonica A; 1997, 91, 4; 783-787
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fano Resonance of Eu$\text{}^{2+}$ and Eu$\text{}^{3+}$ in (Eu,Gd)Te MBE Layers
    Autorzy:
    Orlowski, B. A.
    Kowalski, B. J.
    Dziawa, P.
    Pietrzyk, M.
    Mickievicius, S.
    Osinniy, V.
    Taliashvili, B.
    Kowalik, I. A.
    Story, T.
    Johnson, R. L.
    Powiązania:
    https://bibliotekanauki.pl/articles/2044511.pdf
    Data publikacji:
    2005-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    79.60.-i
    71.20.Mq
    Opis:
    Resonant photoemission spectroscopy, with application of synchrotron radiation, was used to study the valence band electronic structure of clean surface of (EuGd)Te layers. Fano-type resonant photoemission spectra corresponding to the Eu 4d-4f transition were measured to determine the contribution of 4f electrons of Eu$\text{}^{2+}$ and Eu$\text{}^{3+}$ ions to the valence band. The resonant and antiresonant photon energies of Eu$\text{}^{2+}$ ions were found as equal to 141 V and 132 eV, respectively and for Eu$\text{}^{3+}$ ions were found as equal to 146 eV and 132 eV, respectively. Contribution of Eu$\text{}^{2+}$4f electrons was found at the valence band edge while for Eu$\text{}^{3+}$ it was located in the region between 3.5 eV and 8.5 eV below the valence band edge.
    Źródło:
    Acta Physica Polonica A; 2005, 108, 5; 803-807
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigations on the Properties of Nanostructured Mg-Doped Sn₂S₃ Thin Films towards Photovoltaic Applications
    Autorzy:
    Joshua Gnanamuthu, S.
    Kartharinal Punithavathy, I.
    Johnson Jeyakumar, S.
    Jobe Prabhakar, P.
    Parasuraman, K.
    Nagarethinam, V.
    Usharani, K.
    Balu, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1029811.pdf
    Data publikacji:
    2018-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.05.cp
    77.84.Bw
    78.66.Jg
    68.55.Ln
    78.20.Ci
    73.61.Jc
    Opis:
    This paper reports the synthesis, crystal structure, surface morphology, optical and electrical properties of Mg-doped Sn₂S₃ thin films deposited by spray pyrolysis technique. All the films exhibit orthorhombic crystal structure with a (211) preferential orientation. Crystallite size calculations based on the Debye-Scherrer formula indicated that the Sn₂S₃ crystallite size increases with Mg content from 27.97 nm to 33.58 nm. Scanning electron microscopy images showed that all the films were very smooth composed of nanoneedle and nanoplate shaped grains. The band gap energy of the films exhibits a blue shift from 1.94 eV to 2.09 eV with increase in Mg concentration. Resistivity values of the undoped and Mg-doped Sn₂S₃ films were found to be in the order of 0.1 Ωcm. From the obtained results it is observed that the Sn₂S₃ film coated with 2 wt% Mg concentration exhibits better physical properties.
    Źródło:
    Acta Physica Polonica A; 2018, 133, 1; 15-19
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The state of adolescent student attitude towards sex/sexuality education in today’s contemporary society
    Autorzy:
    Adiaha, Monday S.
    Abolarin, Elizabeth E.
    Johnson, Bukola K.
    Ndifon, Mary A.
    Anabe, Momoh I.
    Ocheje, David U.
    Auwalu, Saminu
    Powiązania:
    https://bibliotekanauki.pl/articles/1177733.pdf
    Data publikacji:
    2018
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Adolescent
    Contemporary
    Education
    Sexuality
    Society
    Opis:
    This study was conducted to investigate the attitude of adolescent students towards sex education. The investigation was carried out in Junior Secondary Schools in Gwagwalada Area Council, Federal Capital Territory, Abuja. A simple random technique was used to select the sample size of 1,981 respondents, made up of students in three (3) schools within Gwagwalada Area Council, used for the study. The statistical analysis used for data presentation and analysis were frequency table and percentages. The findings indicated that adolescent students held generally positive attitudes towards sexuality education, with female holding more positive attitudes than male. Learners indicated that the sexuality programme provide valuable information especially with regards to their own bodies and self-respect. Recommendations were given, among which include, that; parents should support their adolescent to practice the knowledge acquired from sex education, ideal (positive) peer group should be form by adolescents, including the society encouraging adolescents to practice teachings of sexuality education, and presenting values and morals that the adolescents can emulate as a guide regarding sexuality issues.
    Źródło:
    World Scientific News; 2018, 101; 205-216
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Femtosecond X-ray Absorption Spectroscopy οf a Light-Driven Spin-Crossover Process
    Autorzy:
    Milne, C.
    Pham, V.
    Gawelda, W.
    Nahhas, A.
    van der Veen, R.
    Johnson, S.
    Beaud, P.
    Ingold, G.
    Borca, C.
    Grolimund, D.
    Abela, R.
    Chergui, M.
    Bressler, Ch.
    Powiązania:
    https://bibliotekanauki.pl/articles/1539083.pdf
    Data publikacji:
    2010-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.70.Dm
    75.30.Wx
    Opis:
    Understanding the initial steps during ultrafast molecular reactions involving large spin state changes is a vital goal in structural dynamics research. These involve knowledge of the geometric structure of the system. Ultrafast X-ray absorption spectroscopy with 50-100 picosecond time resolution establishes the geometric structure of the short-lived (τ = 0.6 ns) high spin state. Here we focus on time-resolved X-ray absorption studies with 160-200 fs temporal resolution to monitor the structural evolution in this spin-conversion process.
    Źródło:
    Acta Physica Polonica A; 2010, 117, 2; 391-393
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of Yb on Valence Band Density of States of CdYbTe and PbYbTe - a Resonant Photoemission Study
    Autorzy:
    Szamota-Sadowska, K.
    Kowalski, B. J.
    Guziewicz, E.
    Orłowski, B. A.
    Sadowski, J.
    Gołacki, Z.
    Ghijsen, J.
    Johnson, R. L.
    Belkhou, R.
    Radosavkič, D.
    Martinotti, D.
    Barrett, N.
    Guillot, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/1952185.pdf
    Data publikacji:
    1996-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.72.Vv
    Opis:
    Photoemission measurements using synchrotron radiation were performed on PbYbTe (bulk crystal) and CdYbTe (MBE thin film). The resonant enhancement of the photoemission was applied for investigation of the contribution of Yb 4f electrons to the valence band. The set of the energy distribution curves was collected for energies in the region close to the 4d-4f Fano transition. The Yb 4f$\text{}^{14}$ were observed at the binding energies close to the edge of the valence band while the 4f$\text{}^{13}$ states were revealed deep in the valence band.
    Źródło:
    Acta Physica Polonica A; 1996, 90, 5; 943-946
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sea ice mechanics
    Autorzy:
    Paul, Felix
    Schwarz, Carina
    Audh, Riesna Reuben
    Bluhm, J.
    Johnson, Siobhan
    MacHutchon, Keith
    Mielke, Tommy
    Mishra, A.
    Rampai, Tokoloho
    Ricken, Tim
    Schwarz, Alexander
    Skatulla, Sebastian
    Thom, Andrea
    Verrinder, Robyn
    Schröder, Jörg
    Vichi, Marcello
    Lupascu, Doru C.
    Powiązania:
    https://bibliotekanauki.pl/articles/29519762.pdf
    Data publikacji:
    2023
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    sea ice mechanics
    polar regions
    review
    Antarctic MIZ
    Opis:
    Earth System Models (ESM), simulating sea ice and its interaction with the atmosphere and open ocean, require reliable physical, chemical, and biological input from measurements. There is limited data available from the Marginal Ice Zone of the Antarctic, where sea ice growth mechanisms differ from the Arctic. The main objective of this study is to review existing work related to Antarctic sea ice and highlight gaps in the available literature. The mechanical properties of sea ice and the numerical modeling of sea ice across all scales are covered. We summarize the genesis, physical mechanics, static and dynamic properties, strength, toughness, and transport of young sea ice as well as medium to large scale observation. On the computational mechanics side large- and small-scale modeling, ocean-sea ice and atmosphere-sea ice models, as well as sea ice rheology models, sea ice fracture mechanics, and bio-geo-chemical interaction processes are captured. The synergy between the physical and computational mechanics brings to light missing information from both fields. Plain language summary (PLS) Sea ice determines the interaction of the ocean with the atmosphere in both the southern and northern hemispheres. Its formation and annual development is subject to mechanical interaction with ocean currents and winds. This review covers the mechanics of sea ice in the Antarctic and its relation to the Arctic covering experiment and modelling. Impact on the climate is discussed.
    Źródło:
    Computer Methods in Materials Science; 2023, 23, 3; 5-53
    2720-4081
    2720-3948
    Pojawia się w:
    Computer Methods in Materials Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-47 z 47

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