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Wyszukujesz frazę "Gabriel, H" wg kryterium: Autor

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    Wyświetlanie 1-4 z 4
    Tytuł:
    The influence of red worms (E. Foetida) on compost’s fertilizing properties
    Autorzy:
    Rosik-Dulewska, Cz.
    Ciesielczuk, T.
    Karwaczyńska, U.
    Gabriel, H
    Powiązania:
    https://bibliotekanauki.pl/articles/123103.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    vermicompost
    earthworm compost
    Eisenia foetida
    fertilizing properties
    Opis:
    Composting is becoming a more and more common way of biodegradable waste disposal. Composts should be characterized by high content of nutrients and low amount of pollutants. Vermicompost is a compost produced by overpopulated culture of earthworm Eisenia foetida (Savigny 1826). World scientific literature states that vermicompost has a high fertilizing value which often exceeds such value of conventional composts. The results showed that vermicompost has a much higher fertilizing value than the compost produced by the traditional pile method. However, prism vermicompost created with the participation of a less concentrated population of earthworms has an intermediate value as a fertilizer (nitrogen and heavy metals), it could be assessed as a lower value product due to the lower content of potassium and phosphorus than the material obtained without earthworms.
    Źródło:
    Journal of Ecological Engineering; 2014, 15, 2; 67-72
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Use of Water Injection Technique to Improve the Combustion Efficiency of the Spark-Ignition Engine: A Model Study
    Autorzy:
    Ghazal, Osama H.
    Borowski, Gabriel
    Powiązania:
    https://bibliotekanauki.pl/articles/125381.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    water injection
    combustion
    emissions
    engine modeling
    Opis:
    In the paper, the effect of water injection and different air/fuel ratio on the gasoline engine performance and emissions was investigated theoretically. A four cylinder SI engine model was built using GT-Power professional software. The gasoline fuel was injected directly to the cylinder and water was injected into the intake manifold with different mass flow rate. The calculated engine parameters were: cylinder pressure and temperature, brake torque, brake power, mean effective pressure, thermal efficiency, carbon monoxide, hydrocarbon, and nitrogen oxide emissions. The results of simulations show that the increased water mass flow rate resulted in an improved engine performance and decreased emissions compared to neat gasoline fuel. However, we found that the excessive increase of the water amount inside the cylinder resulted in a deteriorated engine performance and, consequently, poor combustion efficiency.
    Źródło:
    Journal of Ecological Engineering; 2019, 20, 2; 226-233
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An Experimental Investigation into Improving the Performance of Thermoelectric Generators
    Autorzy:
    Alahmer, Ali
    Khalid, Mohammad Bani
    Beithou, Nabil
    Borowski, Gabriel
    Alsaqoor, Sameh
    Alhendi, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/2068454.pdf
    Data publikacji:
    2022
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    thermoelectric generator
    liquid evaporation
    TEG performance
    enhancing power generation
    waste energy harvesting
    Opis:
    Low-temperature heat sources have become increasingly popular in recent years, particularly for energy generation. The majority of thermal devices in the market (including devices using solar energy, geothermal energy, waste energy, and so on) transform heat into electricity indirectly, requiring mechanical work before producing power. Through the Seebeck effect, the technology that employs a thermoelectric generator (TEG) may directly transform heat energy into electricity. The TEG technology provides several advantages, including compactness, quietness, and the absence of moving components. TEGs have a low thermal and electrical efficiency, which is one of their main drawbacks. Therefore, the performance of a thermoelectric generator is improved by employing liquid evaporation heat transfer in this manuscript. The performance of the thermoelectric was examined experimentally and compared to the liquid evaporation mode under varied heat flux values and different modes of heat transfer in terms of free and forced convection with and without fins. The experimental results revealed that when compared to free convection without fins, adopting forced liquid evaporation convection would improve TEG voltage variation by 435.9%.
    Źródło:
    Journal of Ecological Engineering; 2022, 23, 3; 100--108
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Behavior of temporal parameters of the ground reactive forces for the walking of postmenopausal women
    Autorzy:
    Sousa, A. L. de
    Gabriel, R. E. C. dias
    Faria, A. M.
    Aragao, F. R.
    Moreira, M. H. R.
    Powiązania:
    https://bibliotekanauki.pl/articles/306799.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    lokomocja
    własności temporalne
    siła
    menopauza
    bipedal locomotion
    temporal parameters
    force platform
    ground reactive force
    menopause
    visceral fat
    Opis:
    The study aimed to examine the influence of body composition and menopause characteristics on certain temporal parameters of the behavior of vertical and anteroposterior components of ground reactive forces, as well as the vertical and anteroposterior rates on the walking of postmenopausal women. The sample consisted of 67 postmenopausal women, average age 59 years. Body composition was assessed by octapolar bioimpedance and ground reactive force by the Kistler force platform. Vertical loading rate correlated positively with age (r = 0.02) and negatively with weight (r = –0.33). The relationship between the rates of vertical loading and unloading associated positively with menopause time (r = 0.27) but negatively with weight (r = –0.27). Vertical unloading rate showed a negative association with abdominal visceral adiposity (r = –0.27). The relationship between the times of the intermediate and final phases of the support correlated significantly with abdominal visceral adiposity (r = 0.25) and fat mass (r = 0.24). The study suggests that fat mass and abdominal visceral adiposity affect the support time, and increased abdominal visceral adiposity implies a slower pre-suspension phase during the walking of postmenopausal women. Hormone replacement therapy was shown to be an enhancer of steeper vertical loading and anteroposterior unloading and longer time in the double support phase, indicating a greater stability of postmenopausal women when walking.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2015, 17, 3; 119-127
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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