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    Wyświetlanie 1-8 z 8
    Tytuł:
    Effect of melatonin, GA3 and NAA on vegetative growth, yield and quality of ‘Canino’ apricot fruits
    Autorzy:
    Abd El-Naby, S.K.M.
    Abdelkhalek Ahmed Mohamed, M.
    El-Naggar, Y.I.M.
    Powiązania:
    https://bibliotekanauki.pl/articles/12684291.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    plant cultivar
    apricot
    Canino cultivar
    fruit tree
    fruit quality
    fruit yield
    vegetative growth
    field experiment
    gibberellic acid
    melatonin
    plant growth regulator
    naphthaleneacetic acid
    titratable acidity
    total soluble solid
    Opis:
    A field experiment was carried out during 2017–2018 in the Horticulture Research Station farm in El Kanater El Khayreia, El Kalubeia Governorate, Egypt, to find out the response of foliar application of melatonin, GA3 and NAA on vegetative and fruit attributes of ‘Canino’ apricot. Different plant growth regulators influenced all variable parameters related to vegetative growth and fruit. Results revealed that between all growth regulators, the foliar application of melatonin following by GA3 there was the highest vegetative growth as compared to other treatments, while GA3 gave the highest yield following by melatonin as compared to other treatments. Treatment with NAA improved vegetative growth, yield and fruit quality to a lesser extent as compared to the control.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 3; 167-178
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Consistently Trained Artificial Neural Network for Automatic Ship Berthing Control
    Autorzy:
    Ahmed, Y.
    Hasegawa, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/116809.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Port Maneuvres
    Artificial Neural Network (ANN)
    Automatic Ship Berthing Control
    Ship Berthing
    Automatic Ship Berthing
    Monte Carlo simulation
    Autonomous Underwater Vehicle (AUV)
    Teaching Data Creation
    Opis:
    In this paper, consistently trained Artificial Neural Network controller for automatic ship berthing is discussed. Minimum time course changing manoeuvre is utilised to ensure such consistency and a new concept named ‘virtual window’ is introduced. Such consistent teaching data are then used to train two separate multi-layered feed forward neural networks for command rudder and propeller revolution output. After proper training, several known and unknown conditions are tested to judge the effectiveness of the proposed controller using Monte Carlo simulations. After getting acceptable percentages of success, the trained networks are implemented for the free running experiment system to judge the network’s real time response for Esso Osaka 3-m model ship. The network’s behaviour during such experiments is also investigated for possible effect of initial conditions as well as wind disturbances. Moreover, since the final goal point of the proposed controller is set at some distance from the actual pier to ensure safety, therefore a study on automatic tug assistance is also discussed for the final alignment of the ship with actual pier.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2015, 9, 3; 417-426
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of serum creatinine, urea, and aminotransferase levels among methamphetamine addicted individuals in Khartoum State
    Autorzy:
    Al-Tayeb, Al-Noor Opied
    Abubakr, Mohammed Hayati
    Elrheima, Hafsa Ahmed
    Habbani, Ahmed Khalid
    Elrasul, Rami Y. Hassab
    Powiązania:
    https://bibliotekanauki.pl/articles/38695722.pdf
    Data publikacji:
    2024-03-30
    Wydawca:
    Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
    Tematy:
    aminotransferases
    creatinine
    methamphetamine
    urea
    Opis:
    Introduction and aim. Methamphetamine-use disorder is a pressing global public health issue. In Sudan, the escalating methamphetamine (METH) consumption has become a significant social and health problem. This study aims to evaluate liver and kidney biomarkers in methamphetamine addicts in Khartoum state. Material and methods. The study was an analytical prospective cross-sectional hospital-based study. One hundred participants were enrolled in this study, fifty were cases (methamphetamine addicts), and others were healthy non-METH users as a comparative group. Results. METH users had a mean age of (27±7) years and had been using METH for an average of (14±9) months. Urea and creatinine levels were also significantly elevated in METH users compared to non-users, with p<0.001 and p=0.044, respectively. Their aspartate transaminase (AST) and alanine transaminase (ALT) levels were significantly higher compared to non-users, with p<0.001. Conclusion. There was significant increases in creatinine, urea, and aminotransferases levels in the case group. ALT showed a moderate positive correlation with abuse duration, while AST showed no significant correlation. Urea and creatinine levels had strong and moderate positive correlations with abuse duration, respectively.
    Źródło:
    European Journal of Clinical and Experimental Medicine; 2024, 22, 1; 68-72
    2544-2406
    2544-1361
    Pojawia się w:
    European Journal of Clinical and Experimental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Physico-Chemical Characterization of Medical Solid Waste Leachate: Case of the Hospital de lAmitié of Nouakchott, Mauritania
    Autorzy:
    Ammar, Mohamed Bouna
    Dick, Brahim Ahmed
    Sidi, Yahya Maham Ould
    Dieh, H.
    Mohamed, L. S.
    Lemine, Y. M.
    Sadegh, Vadly
    Fekhaoui, Mohamed
    Powiązania:
    https://bibliotekanauki.pl/articles/2173340.pdf
    Data publikacji:
    2022
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    hospital waste
    impact
    environment
    Opis:
    At the Hospital de l'Amitié, hospital waste corresponds to a mixture of waste assimilated to household waste and the waste from healthcare activities with infectious risks. In the context of hospital hygiene, the conducted study focuses on the impact of this hospital waste on the people of the Hospital de l'Amitié and the environment, and their handling of hospital waste (collection and transport). From an environmental point of view, the physico-chemical characterization of the leachate leaving submerged waste in three media (drinking water, distilled water and alcoholic distilled water) show high concentrations for most of the parameters studied. Physico-chemical characterization of solid waste from Hospital de l'Amitié in Nouakchott (Mauritania) was carried out from September to December 2020. The objective was to determine the value of 14 parameters (pH, temperature, turbidity, electrical conductivity, COD, BOD5, COD/BOD5, BOD5/COD, SS/BOD5, SS, nitrite, nitrate, sulfate and phosphorus), and improve the treatment method for this solid waste by immersing it in three different mediums (drinking water, distilled water and alcoholic distilled water). Among the 14 parameters, seven exceeded the Moroccan and WHO standards for medium 1, 2 and 3 respectively, conductivity (5340.00 μs/cm, 5820.00 μs/cm and 3550.00 μs/cm), BOD5 (122.00 mg/L, 106.00 mg/L and 142.00 mg/L), BOD5/COD (2.30, 1.93 and 2.88), SS (1000.00 mg/L, 600.00 mg/L and 600.00 mg/L), nitrite (0.91 mg/L, 25.00 mg/L and 45.00 mg/L), nitrate (210.00 mg/L, 200.00 mg/L and 110.00 mg/L) and sulfate (1000.00 mg/L, 2000.00 mg/L and 1000.00 mg/L). These results indicate the existence of toxic substances in these leachates that may impact the environment. In addition, the study proposes solid waste treatment from the Hospital de l'Amitié in Nouakchott (Mauritania) before its discharge into the natural environment. This observation is consolidated by the analyses carried out on the leachate of the waste immersed in three aqueous media (drinking water, distilled water and alcoholic distilled water).
    Źródło:
    Journal of Ecological Engineering; 2022, 23, 8; 181--186
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sintering of Egyptian iron ore
    Efektywność procesu rozdziału w osadzarce
    Autorzy:
    Fouzi, S.M.
    Kahlifa, M.G.
    Ahmed, Y.M.Z.
    Mohamed, F.M.
    Shalabi, M.E.H.
    Powiązania:
    https://bibliotekanauki.pl/articles/350128.pdf
    Data publikacji:
    2006
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    egipskie rudy żelaza
    spiekanie
    Egyptian iron ores
    sintering
    Opis:
    There are many parameters affecting of the sintering process such as: amount of water added, basicity of sinter, amount of sinter return, amount of coke breeze, any addition of iron bearing material (mill scale) and time of ignition. Thus the aim of this work is devoted to study the optimum condition for sintering process of the Egyptian iron ore.
    Istnieje wiele parametrów mających wpływ na proces spiekania: ilość dodanej do procesu wody, odczyn pH spieku, ilość pyłu koksowego, każdy dodatek stopu żelaza oraz czas zapłonu. Celem pracy jest określenie optymalnych warunków dla procesów spiekania rud żelaza w Egipcie.
    Źródło:
    Górnictwo i Geoinżynieria; 2006, 30, 3/1; 91-107
    1732-6702
    Pojawia się w:
    Górnictwo i Geoinżynieria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    CFD analysis of nano-lubricated journal bearing considering variable viscosity and elastic deformation effects
    Autorzy:
    Kadhim, Zainab H.
    Ahmed, Saba Y.
    Abass, Basim A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2096173.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    hydrodynamic journal bearings
    computational fluid dynamics
    thermohydrodynamic lubrication
    nano-lubricant
    elastic deformation
    hydrodynamika
    łożyska ślizgowe
    numeryczna mechanika płynów
    smarowanie hydrodynamiczne
    odkształcenie sprężyste
    Opis:
    The main objective of the present work is to study the behavior of Nano-lubricated journal bearing considering elasticity and variable viscosity effects. A mathematical model for a journal bearing is employed using three-dimensional computational fluid dynamics. The study is implemented for a journal bearing with laminar flow and smooth surfaces lubricated with pure oil as well as lubricants containing different concentrations of Al2O3 Nano-particles. The dependence of the oil viscosity on the temperature is considered by using the modified Krieger Dougherty model. Pressure, temperature and elastic deformation in addition to the bearing load-carrying capacity of the bearing working under different eccentricity ratios (0.1-0.6) have been studied. The mathematical model is confirmed by comparing the results of the pressure and temperature distributions obtained in the current work with those obtained by Ferron et al.(1983) for a bearing lubricated with pure oil. Also, the pressure obtained for the Nano-lubricated bearing of the present work is validated with that obtained by Solighar (2015). The results are found in good agreement with a maximum deviation not exceeding 5%. The obtained results show that the oil film pressure increases by about 17.9% with a slight decrease in oil film temperature and friction coefficient.
    Źródło:
    Diagnostyka; 2022, 23, 1; 1--8
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Impact of raw and purified wastewater reuse from the Dar El-Gueddari treatment plant on the soil
    Autorzy:
    Njimat, Smail
    Elfettahi, Fouad
    Griou, Hajar
    El Brouzi, Mohammed Y.
    Aboulouafa, Mohammed
    Ibn Ahmed, Said
    Powiązania:
    https://bibliotekanauki.pl/articles/1844311.pdf
    Data publikacji:
    2021
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    dilutions
    electrical conductivity
    infiltration
    organic matter
    pH
    treatment plant
    wastewater irrigation
    Opis:
    The study has been carried out at two experimental sites. It aims to assess the impact of the reuse of raw wastewater, purified and diluted with conventional water on the physicochemical quality of soils compared to irrigated soils with conventional drilled water and non-irrigated soil. The obtained results show that the electrical conductivity EC and sodium gradually increase in all the plots irrigated with wastewater. Additionally, a slight increase in the pH levels at the first site and a slight decrease in the second site was seen, but at both sites the soils remained alkaline. The infiltration rate of water slide decreases in relation to the amount of irrigation, especially in plots irrigated by raw and treated wastewater. For the same plots, the values of organic matter increased, and the values obtained for the exchangeable sodium percentage (ESP) became high in the third year and reached 17.0% and 16.7% respectively.
    Źródło:
    Journal of Water and Land Development; 2021, 49; 121-128
    1429-7426
    2083-4535
    Pojawia się w:
    Journal of Water and Land Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fabrication of pyramid/nanowire binary structure on n-type silicon using chemical etching
    Autorzy:
    Si Ahmed, Y.
    Hadjersi, T.
    Chaoui, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1068526.pdf
    Data publikacji:
    2016-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    88.40.jj
    Opis:
    A pyramid and nanowire binary structure of n-type monocrystalline silicon surface was fabricated by two-step chemical etching process. The nanowire surface is formed by electroless etching in HF-AgNO₃ aqueous solution after being textured in KOH/IPA solution. Optical absorption was compared between this structure and that of random pyramid arrays. The effective reflectance calculated between 400 and 1100 nm decreased from ≈ 40% to ≈ 15% after pyramidal texturing and ≈ 4% after formation of vertically aligned nanowires with a length less than 1 μ m. This simple and low-cost surface structuring technique holds high potential for the manufacture of terrestrial silicon solar cells with reduced optical losses.
    Źródło:
    Acta Physica Polonica A; 2016, 130, 1; 385-387
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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