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    Wyświetlanie 1-8 z 8
    Tytuł:
    Isometric Pull and Push Strengths of Paraplegics in the Workspace: 1. Strength Measurement Profiles
    Autorzy:
    Das, B.
    Black, N. L.
    Powiązania:
    https://bibliotekanauki.pl/articles/90074.pdf
    Data publikacji:
    2000
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    isometric strength
    measurement
    pull and push strengths
    workspace
    reach envelopes
    paraplegics
    pomiary
    ciągnięcie
    pchanie
    siła mięśni
    praca mięśni
    Opis:
    The isometric strength profiles of male and female paraplegics were determined for pull and push strengths in the normal, maximum, and extreme working reach envelopes. A computerized isometric strength measurement system was designed and constructed for the purpose. The strongest pull location was at extreme reach vertically above the shoulder and the strength values for males and females were 473 and 318 newtons (N), respectively. The strongest push location was at maximum reach, at vertical ($) angle of 45° and at horizontal (6) angle of 45° for males and at 0° for women and the strength values were 235 and 172 N, respectively. The nature of the strength profiles was found to be similar for both the sexes. The pull and push strengths of the female were 77 and 68% that of the male, respectively.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2000, 6, 1; 47-65
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Isometric Pull and Push Strengths of Paraplegics in the Workspace: 2. Statistical Analysis of Spatial Factors
    Autorzy:
    Das, B.
    Black, N. L.
    Powiązania:
    https://bibliotekanauki.pl/articles/89871.pdf
    Data publikacji:
    2000
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    isometric strength
    pull and push strengths
    workspace reach levels
    horizontal and vertical angles
    paraplegics
    analiza statystyczna
    siła mięśni
    praca mięśni
    Opis:
    The effect of reach levels, horizontal angles, and vertical angles on isometric pull and push strengths of male and female was determined. Highly significant increases in men’s push strength were found between extreme to maximum reaches, and from extreme to normal reaches. However, for women’s push strength, a significant increase was found only between extreme to maximum reach. Significant or highly significant increases were found in men’s and women’s pull strength between the horizontal angle (0) sagittal through the active shoulder (90°) and other angles (0, 45, and 135°). However, for men’s push strength, highly significant increases were found between the horizontal angle 45° from the frontal plane, and other angles. For women’s push strength, significant or highly significant increases were found between the horizontal angles 0° and angles of 90 and 135°. For men’s and women’s pull strength, significant or highly significant increases were found between the vertical angle (), 90°, and other angles (-20, 0, and 45°). Similar increases were found for women’s push strength between the 45° angle and other angles. In the design of a workstation for paraplegics that requires pull and push forces, consideration must be given to the spatial factors.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2000, 6, 1; 67-80
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Simulation of Primary Spectra of Particle Radiation from Black Holes
    Autorzy:
    Wijewardhana, C. N. T.
    Wijewardena Gamalath, K. A. I. L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1193473.pdf
    Data publikacji:
    2021
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Hawking radiation
    Higgs boson emission
    Kerr black hole
    Planck mass
    Primary emission spectra
    Schwarzschild black hole
    W±
    Z0
    primordial black hole
    quark and gluon emission
    Opis:
    The instantaneous primary emission spectra of particles radiating from Schwarzschild black holes and maximally rotating Kerr black holes of masses 1013 – 1015 g were investigated and C code, BlackHawk was used for the simulations. From a Schwarzschild black hole of mass 3.53×1013 g, gluons had the lowest cutoff energy, 199 MeV. The emission spectra were dominated by coloured particles, quarks having with the highest overall emission rate, 2.826×1022 GeV-1s-1 at energy 1.205 GeV. The leptons e±, μ±, τ± showed similar variation in emission rates. The only particles emitted with energies below the rest mass of u quarks were neutrinos, photons, and e±. At greater particle energies (> ~ 2 GeV) the emission rates of all particles were almost equivalent. The emission of vector bosons, Z0 and W± were negligible and became significant when the mass reduced to ~1011 g and then gluons, W±, Z0 and photons were emitted similar to each other with a peak at energy, 280 GeV. The emitting rates of gluons, quarks, neutrinos, W±, e±, μ±, τ±, Z0, photons, and Higgs bosons are in decreasing order respectively. As the mass of the black hole is reduced to 1.06×108 g, quarks were emitted at the highest rate 2.826×1022 GeV-1s-1 at 4010 GeV peak energy and at energies between rest mass energy of Higgs boson and 1.25×105 GeV, the emission of Higgs bosons exceeded the emission of quarks. For maximally rotating Kerr black hole of mass 3.53×1013 g, W±, Z0 and Higgs boson were emitted at higher emission rates 1012 – 1015 GeV-1s-1 and for mass 1.06×108 g, the gluons had the highest overall emission rate at the peak energy. At extremely high energies, the gluon emission rates are less than the emission rates of Higgs bosons, quarks, neutrinos, and e±, μ±, τ±. The spin-dependent behaviour of spectra is also present.
    Źródło:
    World Scientific News; 2021, 158; 105-129
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Phytopharmacological study of red, white and black variety of Abrus precatorius L.
    Autorzy:
    Garaniya, N.H.
    Bapodra, A.H.
    Ladva, K.D.
    Powiązania:
    https://bibliotekanauki.pl/articles/11319.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    phytopharmacology
    red variety
    white variety
    black variety
    Abrus precatorius
    medicinal plant
    flavonoids
    steroid
    Opis:
    Abrus precatorius L. is a leguminous plant of family fabaceae. Plant parts are widely used for medicinal purpose in different region of the world. Seed behavior and phytochemical evaluation of different solvent extracts (i.e. Petroleum ether, Ethyl acetate, Methanol & Water) of leaf and seed of red, white and black varieties of Abrus precatorius L. is carried out in the present study. This study indicates presence of different phytoconstituents i.e. alkaloids, steroids, glycosides, proteins, etc. the present study concludes that the plant parts can be used as very good natural remedy to diagnosed variety of dieses.
    Źródło:
    International Letters of Natural Sciences; 2014, 09
    2300-9675
    Pojawia się w:
    International Letters of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of herbicide (Quizalofop-p-ethyl) on growth, photosynthetic pigments, enzymes and yield responses of blackgram (Vigna mungo L.)
    Autorzy:
    Mahakavi, T.
    Bakiyaraj, R.
    Baskaran, L.
    Rashid, N.
    Ganesh, K.S.
    Powiązania:
    https://bibliotekanauki.pl/articles/10896.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    herbicide effect
    quizalofop-p-ethyl
    plant growth
    photosynthetic pigment
    pigment
    catalase
    peroxidase
    enzyme
    yield response
    black gram
    black lentil zob.black gram
    Vigna mungo
    Opis:
    The recent experiment was conducted to assess the effect of herbicide (quizalafop-p-ethyl) on growth, photosynthetic pigments, enzymes and yield of Black gram (Vigna mungo L.) during the summer season 2013-2014. This experiment comprised black gram (variety ADT 3) and different concentrations of herbicide (quizalafop-p-ethyl) treatments compared with control. Reduction in growth, photosynthetic pigments, enzymes and yield parameters were observed with 0.5 % herbicide application followed by 1 %, 1.5 % and 2 %, out of all treatments 0.5 % shows least reduction. Thus, 0.5 % herbicide application is the safest way for weed control in Black gram field as it showed least adverse effect on growth, photosynthetic pigments, enzymes and yield of crop when compared with other treatments.
    Źródło:
    International Letters of Natural Sciences; 2014, 04
    2300-9675
    Pojawia się w:
    International Letters of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Genetic variability and virulence of some Iranian Rhizoctonia solani isolates associated with stem canker and black scurf of potato (Solanum tuberosum L.)
    Autorzy:
    Esfahani, M.N.
    Powiązania:
    https://bibliotekanauki.pl/articles/2084743.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    genetic diversity
    isolates
    ISSR
    RAPD
    virulence variability
    Opis:
    Stem canker and black scurf of potato (Solanum tuberosum L.) caused by Rhizoctonia solani Kühn are important and epidemic diseases in potato-growing regions worldwide, including Iran. In this study, 120 isolates were retrieved from infected stem canker from six potato-growing regions in Iran (Isfahan, Ardebil, Fars, Hamedan, Kurdestan and Kerman). Out of these, 30 isolates were selected as representatives for genetic and virulence analysis. The isolates were analyzed by one sequence analyzes of the ITS-rDNA region, random amplified polymorphic DNA (RAPD) and inter-simple sequence repeat (ISSR), as well as virulence studies. Based on sequence analysis of the ITS-rDNA region, all 30 isolates were assigned to the anastomosis group (AG) and all were assigned to AG-3 PT. Cluster analysis using the unweighted pair group method with the arithmetic averages (UPGMA) method for both RAPD and ISSR markers revealed that they were divided into three main groups, with no correlation to geographical regions of the isolates. Pathogenicity tests showed that all isolates were pathogenic on potato cv. Agria; however, virulence variability was observed among the isolates. The grouping based on RAPD analysis and virulence variability was not correlated.
    Źródło:
    Journal of Plant Protection Research; 2020, 60, 1; 21-30
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Lower Toarcian organic-rich sediments from the Tuscan Succession (Northern Apennines, Italy): preliminary results
    Autorzy:
    Perilli, N.
    Rodrigues, R.
    Veiga de Oliveira, L.
    Catanzariti, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2061357.pdf
    Data publikacji:
    2009
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    black shales
    Early Toarcian
    calcareous nannofossils
    Tuscan Nappe
    Northern Apennines
    Italy
    Opis:
    For the first time is here documented the presence of Lower Toarcian black shales in the lower portion of the Calcari e marne a Posidonia (Posidonia Marls auctt.) belonging to the Tuscan Nappe. It consists of alternations of 30 cm to 5 m thick black laminated marlstone and marly claystone, with TOC values ranging from 0.43% to 2.49%. Based on calcareous nannofossils, the basal portion of the Calcari e marne a Posidonia spans the Lotharingius hauffii to Carinolithus superbus zones, and the organic-rich interval lies within the Carinolithus superbus Zone.
    Źródło:
    Volumina Jurassica; 2009, 7, 1; 55-65
    1896-7876
    1731-3708
    Pojawia się w:
    Volumina Jurassica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Environmental risk assessment in the background of armed conflict in the Black Sea Area. A case study for a container terminal in the port of Constanța
    Autorzy:
    Stefanov, N. O.
    Rauca, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/24201412.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    maritime transport
    port of Constanza
    container terminal
    Black Sea
    environmental risk
    pollution at sea
    armed conflict safety
    environmental performance and profitability of terminals
    Opis:
    The year 2022 was marked by economic risks with potentially very sensitive impacts for countries in the Black Sea region. Given the limited capacity of Ukrainian ports, as well as the sanctions imposed on Russia, due to ongoing conflict, it was necessary to identify new destinations capable of taking over the flow of goods that normally went to the countries involved in this conflict. In addition to the risks specific to maritime transport, the risk of armed conflict comes with new challenges that can also materialize in the form of environmental impact. To analyze this potential impact, the study is being focused mainly on the analysis of the pollution risk generated by the emissions caused by the vessels calling the container terminal CSCT, located in Constanța harbor, and the emissions generated by the vehicles moving in the terminal. As estimated from the start all levels of pollution have increased, with the level of CO2 increasing from 11072.7 tons in 2021 to 11915.7 tons in 2022. The NOx emissions have a similar trend, as well as the other emission level measured and calculated.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 3; 545--551
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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