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Tytuł:
Towards an International Standard on Occupational Health and Safety Management
Autorzy:
Abad, J.
Mondelo, P. R.
Llimona, J.
Powiązania:
https://bibliotekanauki.pl/articles/91048.pdf
Data publikacji:
2002
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
management systems
international standards
OHSAS
ILO
system zarządzania bezpieczeństwem i higieną pracy
komisja bezpieczeństwa pracy
normalizacja
norma
Hiszpania
Europa
Opis:
As a result of the need for companies to manage occupational health and safety, as well as the absence of a globally accepted international standard, numerous organisations have developed their own models in the shape of guides, standards, or guidelines. However, the resultant dispersion is creating confusion among companies, rather than making life easier for them. In this article, we look at the current situation as far as available European management systems are concerned, and the emergent trends in the development of an international standard. Moreover, we present the special case of Spain, whose broad legislation on occupational health and safety might hinder the adoption of an international model by Spanish companies.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2002, 8, 3; 309-319
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Statistical analysis and modeling of SIP traffic for parameter estimation of server hysteretic overload control
Autorzy:
Abaev, P.
Razumchik, R.
Uglov, I.
Powiązania:
https://bibliotekanauki.pl/articles/308261.pdf
Data publikacji:
2013
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
Markov Modulated Poisson Process
overload control
SIP server
statistical analysis
Opis:
The problem of overload control in Session Initiation Protocol (SIP) signaling networks gives rise to many questions which attract researchers from theoretical and practical point of view. Any mechanism that is claimed to settle this problem down demands estimation of local (control) parameters on which its performance is greatly dependent. In hysteretic mechanism these parameters are those which define hysteretic loops. In order to find appropriate values for parameters one needs adequate model of SIP traffic flow circulating in the network under consideration. In this paper the attempt is made to address this issue. Analysis of SIP traffic collected from telecommunication operator’s network is presented. Traffic profile is built. It is shown that fitting with Markov Modulated Poisson Process with more than 2 phases is accurate. Estimated values of its parameters are given.
Źródło:
Journal of Telecommunications and Information Technology; 2013, 4; 22-31
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Statistical Analysis of Message Delay in SIP Proxy Server
Autorzy:
Abaev, P.
Razumchik, R.
Uglov, I.
Powiązania:
https://bibliotekanauki.pl/articles/958112.pdf
Data publikacji:
2014
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
single hop delay
SIP server
statistical analysis
waiting time
Opis:
Single hop delay of SIP message going through SIP proxy server operating in carriers backbone network is being analyzed. Results indicate that message sojourn times inside SIP server in most cases do not exceed order of tens of milliseconds (99% of all SIP-I messages experience less than 21 ms of sojourn delay) but there were observed very large delays which can hardly be attributed to message specic processing procedures. It is observed that delays are very variable. Delay components distribution that is to identied are not exponentially distributed or nearly constant even per message type or size. The authors show that measured waiting time and minimum transit time through SIP server can be approximated by acyclic phase-type distributions but accuracy of approximation at very high values of quantiles depends on the number outliers in the data. This nding suggests that modeling of SIP server with queueing system of GjPHjc type may server as an adequate solution.
Źródło:
Journal of Telecommunications and Information Technology; 2014, 4; 79-87
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Validation of tropical artificial soil by chronic toxicity studies on Eisenia fetida against superphosphate
Autorzy:
Abbiramy, K.S.
Ross, P.R.
Paramanandham, J.
Powiązania:
https://bibliotekanauki.pl/articles/10839.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
validation
tropical soil
artificial soil
chronic toxicity
Eisenia fetida
superphosphate
Opis:
The research methodology recommended by the OECD (Organization of Economic Co-operation and Development) and ISO (International Organization for Standardization) guidelines for testing of chemicals meets the most criteria expected for ecotoxicological testing except the testing condition and the organic matter. The guidelines were initially developed by temperate countries, with testing conditions as 20 °C and the organic matter as sphagnum peat which is commonly available in those countries. But these two criterions are difficult to be followed in tropical countries. Thus there arises a need of modifying these criterions for toxicity studied in tropical regions. In this study a trial was made for substituting the fermented coir pith for sphagnum peat and the validation of the modified tropical artificial soil (TAS) was done by conducting chronic toxicity studies on Eisenia fetida against an inorganic fertilizer, superphosphate (SP) under tropical condition, i.e., 28 ±2 °C. The performed study showed that the SP determined lower earthworm mortality in TAS comparing to OECD soil for all tested concentration levels. The number of juveniles produced in OECD soil was also significantly reduced (p < 0.05) than in TAS. This may be due to the production of large amount of hydrogen ions when the temperature increases and making the medium acidic. The fermented coir pith was more suitable for ecotoxicity studies under tropical condition than sphagnum peat.
Źródło:
International Letters of Natural Sciences; 2014, 08, 1
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genetic variability and host specialization in Alternaria alternata colonizing Solanaceous crops in Sudan
Autorzy:
Abbo, A.S.
Idris, M.O.
Elballa, M.A.
Hammad, A.M.
El Sidding, M.A.R.
Karlovsky, P.
Powiązania:
https://bibliotekanauki.pl/articles/66044.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
plant disease
early blight
genetic variability
host
Alternaria alternata
diversity
Solanaceae
crop
amplified fragment length polymorphism
Sudan
Opis:
Early blight disease caused by Alternaria sp. is one of the most devastating diseases of Solanaceous crops widely distributed in Sudan. The aim of this study was to determine the genetic variation among different Alternaria isolates recovered from different Solanaceae crops showing typical symptoms of early blight disease. Infected leaves of tomato, potato, eggplant and pepper were collected from different geographical zones in Sudan. The recovered fungal isolates were identified to the genus level based on cultural and morphological characteristics. Five representative isolates were sent to the CABI Bioscience, U.K. for confirmation. The genetic relationship among the isolates was determined using the amplified fragments length polymorphism (AFLP) technique and the generated data were used to create similarity matrices using the PAST 3.01 software package. Dendrograms were constructed based on Jaccard’s similarity coefficients. A total of 70 fungal isolates was recovered from the tested plants and all of them showed morphological characteristics typical of Alternaria spp. The conidia appeared in multiple-branched chains with spore sizes in the range of 2.38−13.09 μm × 12.30−43.63 μm. Therefore, the isolates were identified as Alternaria alternata (Fr.) Keissl. The identification was then confirmed by CABI.AFLPbased dendrogram which revealed five clusters with a significant cophenetic correlation coefficient (r = 0.834) between the dendrogram and the original similarity matrix irrespective of their geographical origins. Eighteen (75%) of the Alternaria isolated from tomato leaves were clustered together in cluster I and five isolates formed two separate clusters, viz. cluster IV (T-Kh5 and T-H1) and cluster V (T-H4 and T-Med2). The remaining isolate, T-Am5, grouped with one of the potato isolates in cluster III. The other isolates which were recovered from potato, pepper and eggplants were all separated from the tomato isolates in the largest cluster.
Źródło:
Journal of Plant Protection Research; 2018, 58, 3
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of injection pressure and strategy in a Jaguar V6 diesel engine
Autorzy:
Abdullah, N. R.
Mamat, R.
Rounce, P.
Wyszynski, M. L.
Tsolakis, A.
Xu, H. M.
Tian, G.
Powiązania:
https://bibliotekanauki.pl/articles/242414.pdf
Data publikacji:
2009
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
combustion
emissions
injection strategies
premixed combustion
ignition delay
Opis:
In recent years, the improvement of engine performance and emissions has become an extremely important concern. This study focuses on the injection strategy based on the injection pressure (IP) and duration between pilot injection and the main injection (dMI) using a multi cylinder common rail multiple injections diesel engine. The study was designed to produce improvements in fuel mixing via the injection strategy, to reduce the main ignition delay. This would contribute to a minimum amount of fuel burnt in the premixed combustion phase, leading to a reduction in emissions. Recent evidence shows that premixed combustion is significant in the controlling of emissions of nitrogen oxides (NOx) and soot. Six different IPs combined with a short and long dMI were compared in the attempt to improve engine performance and emissions. The engine performance was measured in terms of brake specific fuel consumption, ignition delay, heat release and peak in-cylinder pressure and emissions, specifically nitrogen oxides (NOx), total unburned hydrocarbons (THC), carbon monoxide (CO) and smoke emissions for each engine test condition. The evidence from this study shows that the effect of IP is more dominant than dMI in terms of peak cylinder pressure, heat release, brake specific fuel consumption and emissions. However, the dMI shows a strong effect at a higher engine speed.
Źródło:
Journal of KONES; 2009, 16, 2; 9-22
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The adrenal renal vascular connection plays an essential role in the pathogenesis of renovascular hypertension in the rat
Autorzy:
Abramczyk, P.
Ziecina, R.
Lisiecka, A.
Papierski, K.
Przybylski, J.
Powiązania:
https://bibliotekanauki.pl/articles/69187.pdf
Data publikacji:
2000
Wydawca:
Polskie Towarzystwo Fizjologiczne
Tematy:
pathogenesis
adrenal renal portal circulation
adrenalectomy
adrenal renal vascular connection
nephrectomy
renal artery
plasma renin
renal blood
rat
renovascular hypertension
blood pressure
Źródło:
Journal of Physiology and Pharmacology; 2000, 51, 1
0867-5910
Pojawia się w:
Journal of Physiology and Pharmacology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badania prądnicy z magnesami trwałymi
Experimental Results of Permanent Magnet Generator
Autorzy:
Abramowski, A.
Paplicki, P.
Piotuch, R.
Powiązania:
https://bibliotekanauki.pl/articles/1367533.pdf
Data publikacji:
2015
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
prądnica
magnes trwały
SMC
badania eksperymentalne
synchronous generator
permanent magnet
test results
Opis:
The paper presents selected experimental results of a permanent magnet generator up to 0,5 kVA to be used in a micro wind or hydro power plant. No-load back-emf, load output voltage and efficiency map of the generator tested for a rotor speed range of 0-2000 rpm are shown.
Artykuł przedstawia wybrane wyniki badań eksperymentalnych prądnicy z magnesami trwałymi o mocy do 0,5 kVA dedykowanej do mikro elektrowni wiatrowej lub wodnej. Pokazano charakterystyki biegu jałowego i obciążenia oraz mapę sprawności prądnicy badanej w zakresie prędkości obrotowych 0-2000 obr/min.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2015, 4, 108; 33-35
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Charakterystyka wybranych surowców roślinnych i możliwości ich wykorzystania jako dodatków do ciast chlebowych ®
Characteristic of selected plant raw materials and their potential applications as additives to bread dough®
Autorzy:
Achremowicz, B.
Ceglińska, A.
Darmetko, M.
Haber, T.
Jankowska, J.
Karpiński, P.
Obiedziński, M.
Tarasiewicz, R.
Powiązania:
https://bibliotekanauki.pl/articles/956062.pdf
Data publikacji:
2017
Wydawca:
Wyższa Szkoła Menedżerska w Warszawie
Tematy:
siemię lniane
pestki dyni
pestki słonecznika
skład chemiczny
właściwości prozdrowotne
wzbogacanie pieczywa
flaxseed
pampkin seeds
san flower seeds
chemical composition
healt benefits
enrichment bread
Opis:
Skład chemiczny i liczne właściwości, w tym prozdrowotne, nasion wielu roślin sprawiają, że są one doskonałym dodatkiem wzbogacającym walory organoleptyczne i wartość odżywczą pieczywa. Pieczywo, spożywane w znacznych ilościach i każdego dnia, przez wszystkie grupy społeczne, jest podstawowym produktem spożywczym, a jednocześnie doskonałym nośnikiem dla wielu niezbędnych składników pokarmowych czy wartości prozdrowotnych. Szczególnie cennymi dodatkami do pieczywa są: nasiona lnu, dyni i słonecznika. Jako dodatki piekarskie wykorzystywane mogą być zarówno całe nasiona jak i mąki z nich uzyskane.
Seeds of many plants are a great additions enriching the organolep- tic and nutritional value of bread. It is the result of their chemical composition and a number of other properties, including health benefits education. Bread a popular daily food consumed by all social groups, is a staple food, and excellent carrier for many essential nutrients and healthy values. Flaxseeds, pumpkin and sunflower rare particularly valuable addi-tions to bread. One may use either whole seed or flour the baking additives.
Źródło:
Postępy Techniki Przetwórstwa Spożywczego; 2017, 1; 97-109
0867-793X
2719-3691
Pojawia się w:
Postępy Techniki Przetwórstwa Spożywczego
Dostawca treści:
Biblioteka Nauki
Artykuł

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