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Wyszukujesz frazę "Barakat, M." wg kryterium: Wszystkie pola

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Tytuł:
Amelioration of Ultrasonic Transducer to Study CuO Doped Thin Films
Autorzy:
Barakat, M. A. Y.
Powiązania:
https://bibliotekanauki.pl/articles/176534.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ultrasonic
thin films
doping
microstructure
wedge
Opis:
Ultrasonic pulse echo technique was used to study cupric oxide (CuO) thin films. CuO thin films were prepared using sol gel technique. They were doped with Lithium (Li) (1%, 2% and 4%). Thin films’ thickness (d) and band gap energy (Eg) were measured. In addition, elastic moduli (longitudinal (L), shear (G), bulk (K) and Young’s (E)) and Poisson’s ratio (v) were determined to estimate the microstructure properties of the prepared films. The study ameliorated the used transducers to overcome their dead zone and beam scattering; wedges were developed. The results showed the effectiveness of these wedges. They enhanced transducers’ sensitivity by changing the dead zone, beam diameter, beam directivity and waves’ transmission. Also, the study noted that Li doping caused the improvement of CuO thin films to be more useful in solar cell fabrication. Li-CuO thin films had narrower band gap. Thus, they acquired a high quantum yield for the excited carriers; also they gained more efficiency to absorb solar light.
Źródło:
Archives of Acoustics; 2018, 43, 3; 487-495
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kinetics of uranyl ion polymerization in the presence of ammonium hydroxide
Autorzy:
Abdelrazek, I.
Zidan, W.
Farag, H.
Barakat, M.
Powiązania:
https://bibliotekanauki.pl/articles/148783.pdf
Data publikacji:
2005
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
uranyl ion
hydrolysis
kinetics
polymerization
Opis:
Kinetics of the polymerization of UO2 2+ ion to UO2[(OH)2UO2]4 2+ in the ammonia-uranyl nitrate system has been studied. The deepening of the color formed with the addition of ammonia made it possible to estimate spectrophotometrically the concentration of the formed UO2[(OH)2UO2]4 2+ ions in the solution at 420.6 nm. The effects of pH, temperature as well as the concentration of uranyl ion have been investigated. The reaction rate equation for the polymerization reaction is presented. Linear dependencies of logarithm of the apparent reaction-rate constant on both pH and the reverse of temperature were observed.
Źródło:
Nukleonika; 2005, 50, 2; 57-60
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improving quality attributes of tomato during cold storage by preharvest foliar application of calcium chloride and potassium thiosulfate
Autorzy:
Semida, W.M.
Emara, A.E.
Barakat, M.A.
Powiązania:
https://bibliotekanauki.pl/articles/10960.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Źródło:
International Letters of Natural Sciences; 2019, 76
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Integrated use of potassium and Ssoil mulching on growth and productivity of garlic (Allium sativum L.) under deficit irrigation
Autorzy:
Barakat, M.A.
Osman, A.S.
Semida, W.M.
Mohammed, A.G.
Powiązania:
https://bibliotekanauki.pl/articles/11275.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Źródło:
International Letters of Natural Sciences; 2019, 76
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nematicidal activity of some biopesticide agents and microorganisms against root-knot nematode on tomato plants under greenhouse conditions
Autorzy:
Khalil, M.S.E.H.
Alam, A.F.G.
Barakat, A.S.T.
Powiązania:
https://bibliotekanauki.pl/articles/66875.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
A pot experiment was carried out under greenhouse conditions to study the impact of the evaluated treatments namely abamectin, azadirachtin 0.15%, azadirachtin 0.03%, Bacillus subtilis, Pseudomonas fluorescens, Paecilomyces lilacinus and oxamyl against root-knot nematode (Meloidogyne incognita) on the tomato plants cv. Super strain B. The results indicated that the most of the tested treatments obviously reduced root galls and remarkably increase tomato plant growth characters significantly and egg masses on root system, as well as, juvenile's numbers in the soil. P. lilacinus was the most effective treatment on both galls and egg masses achieving 88.23 and 76.94% reduction, respectively. While, less effective treatment was P. fluorescens achieving 57.53% galls reduction. Azadirachtin 0.03% was the least effective treatment giving 40.37% reduction of egg masses. The superior treatment that suppressed nematode populations was oxamyl recording (88.90%) followed by abamectin (78.69%) reduction. Moreover, azadirachtin 0.15% was the least effective treatment which recorded 60.15% reduction. On the other hand, plants free nematode recorded the highest plant parameters for shoot system length, fresh shoot weight, dry shoot weight and root system length with values of 24.15, 107.53, 211.59 and 46.17% increase, respectively. Azadirachtin 0.15% was the least effective treatment on shoot system length and fresh and dry shoot weight. While, oxamyl recorded the least increase in root system length estimated by 18.47%. B. subtilis recorded the highest increase in fresh root weight followed by P. fluorescens with value of 125.75 and 86.57%, consecutively. Vise versa, P. fluorescens was the superior treatment to increase the dry root weight by 68.14% followed by B. subtilis which recorded 35.40%. The least effective treatment in improving fresh root weight was azadirachtin 0.15% which recorded 54.85% increase. Regarding to dry shoot weight P. lilacinus and azadirachtin 0.15% were the least effective treatments with values of 8.85 and 2.66% reduction, respectively.
Źródło:
Journal of Plant Protection Research; 2012, 52, 1
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nutritional status of sub-Saharans residing in the city of El Jadida - Morocco: weight in relation to socio-economic status
Autorzy:
Daif, H.
Chamlal, H.
Barakat, I.
Ayachi, M.E.
Belahsen, R.
Powiązania:
https://bibliotekanauki.pl/articles/2082826.pdf
Data publikacji:
2021
Wydawca:
Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Tematy:
Morocco
obesity
BMI
WHR
Sub-Saharans
migrant
Opis:
Background. Onset of overweight and obesity has been previously reported as a result of population migration to western countries. Objective. To determine the nutritional status, weight status and their association with socioeconomic status in sub- Saharan settled in El Jadida city in a Mediterranean country Morocco. Materials and methods. A descriptive study was carried out in 2018 on 256 sub-Saharans migrants living in the city of El Jadida in Morocco. Information on socio-economic and socio-demographic characteristics as well as anthropometric measurements was collected. The body mass index (BMI) and abdominal obesity by measuring waist circumference (WC) and waist circumference to hip ratio (WHR) and the distribution of body fat by calculating the sum of skin folds are determined. Results. Analysis results indicate that height, waist circumference, hip circumference, sum of trunk skinfolds, total sum of skinfolds, and BMI increase with age. The prevalence of underweight decreases with age, overweight was 38.7% in the youngest age group (18-25 years) and reached higher values after 35 years (44.10%). In addition, the prevalence of general obesity (based on BMI) increased with age and abdominal obesity (based on WHR and WC) was more marked in sub-Saharan people aged 26 to 35 years. These results also reveal the coexistence of underweight, overweight and obesity in all age groups. The analysis revealed a significant association between several variables and obesity. Significant associations were found between age and BMI (P=0.04), between level of education (university) and WHR (p=0.02), between sex and WHR, and between sex and WC (p=0.049). The study revealed also that the majority of the study sample gained weight after their settling in the host country. Conclusions. The study data show that obesity including overweight and abdominal obesity were prevalent among sub- Saharan migrants residing in the city of El Jadida. This prevalence is associated with socio-demographic and socio- economic factors.
Źródło:
Roczniki Państwowego Zakładu Higieny; 2021, 72, 4; 409-418
0035-7715
Pojawia się w:
Roczniki Państwowego Zakładu Higieny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Factors influencing cooking method, frequency, and duration of meal preparation in Moroccan households
Autorzy:
Barakat, I.
Elayachi, M.
Belahsen, R.
Powiązania:
https://bibliotekanauki.pl/articles/28765342.pdf
Data publikacji:
2023
Wydawca:
Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Opis:
Background. The construction of the consumer’s identity is dependent on how they prepare their meals. Objective. Study the cooking methods, frequency, and duration of meal preparation in Moroccan households as well as the associated factors. Materials and methods. This work is a part of a study with a validated conceptual and methodological framework that was conducted in 507 households in the region of Rabat-Salé-Kenitra in Morocco. The characteristics of the population and data on the cooking methods, frequency, and duration of meal preparation were collected by a survey. Associations between variables were studied by univariate logistic regression with a significance level of p<0.05. Results. The majority of the population was aged between 35 and 65 years (76%) and lived in urban areas (70%). The univariate analysis showed that the urban area was a factor that hindered stewing (p=0.009), while the work status (p=0.04) and the marital status “Married” (p=0.04) were favorable factors; the household size (p=0.02) is a factor favoring steaming method; urban area (p=0.04), work status (p 0.03), nuclear family type (p<0.001), and household size (p=0.02) are factors hindering the use of oven cooking; urban area (p=0.02) and higher education level (p=0.04) are factors favoring the use of fried food, age category [20-34] years (p=0.04), higher education level (p=0.01) and work status (p=0.01) were factors that favored the use of grilling; nuclear family type, (p=0.04) and household size (p=0.03) were factors that hindered the preparation of breakfast; urban area (p=0.03) and Arab ethnicity (p=0.04) are factors hindering snack preparation; urban area (p<0.001) is a factor favoring dinner preparation; household size (p=0.01) and use of stewing at least four times a week (p=0.002) are factors hindering meal preparation time, while use of baking (p=0.01) is a favoring factor. Conclusion. The study results point towards the implementation of a nutritional education strategy based on combining habits, preferences, and good cooking practices.
Źródło:
Roczniki Państwowego Zakładu Higieny; 2023, 74, 2; 177-185
0035-7715
Pojawia się w:
Roczniki Państwowego Zakładu Higieny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of water quality in open channels flowing through Beni-Mellal City (Morocco)
Ocena jakości wody w otwartych kanałach płynących przez miasto Beni-Mellal (Maroko)
Autorzy:
Barakat, A.
El Baghdadi, M.
Meddah, R.
Rais, J.
Nadem, S.
Afdali, M.
Powiązania:
https://bibliotekanauki.pl/articles/292626.pdf
Data publikacji:
2013
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
urban channels
physicochemical parameters
wastewater
water quality
jakość wody
kanały miejskie
parametry fizyczno-chemiczne
ścieki
Opis:
The water quality of the open channels (Foughal, OumDhar and Tamagnounte) flowing into Beni-Mellal city were assessed in a bid to determine impacts of anthropogenic activities. Physicochemical and bacteriological parameters comprising temperature, pH, alkalinity, electrical conductivity, oxidizability, total hardness, ammonia, nitrite, nitrate, total coliforms, fecal coliforms and geochemical analyses were determined for the channels water before reaching the irrigation areas. While biological parameters demonstrated substantial variability, other parameters showed relatively little spatial variations. The spatial variations in water quality may be attributed to the effects of the urban wastewater discharge in the channels and to surface urban and agricultural runoff. Compared with drinking water quality standards of Moroccan and WHO, the results indicated that the channels water was suitable for drinking purpose with prior treatment. Various determinants such as electrical conductivity, residual sodium carbonate, total dissolved solids and hardness revealed that all water samples were suitable for irrigation.
Oceniono wpływ działalności człowieka na jakość wody w otwartych kanałach (Foughal, OumDhar i Tamagnounte), dostarczających wodę do miasta Beni-Mellal. Zmierzono takie parametry fizyczne, chemiczne i bakteriologiczne, jak: temperatura, pH, alkaliczność, przewodnictwo elektrolityczne, utlenialność, twardość całkowitą, jony amonowe, azotyny, azotany, całkowitą liczbę bakterii coli, bakterie pochodzenia kałowego oraz przeprowadzono analizy geochemiczne w wodzie kanałów przed jej wprowadzeniem do systemów nawadniających. Podczas gdy parametry biologiczne wykazywały znaczną zmienność, pozostałe parametry cechowała stosunkowo niewielka zmienność przestrzenna. Na zmienność jakości wody w przestrzeni mogą wpływać ścieki miejskie spuszczane do kanałów oraz powierzchniowy spływ z terenów miejskich i obszarów rolniczych. Uzyskane wyniki porównane do norm jakości wody pitnej obowiązujących w Maroku i norm WHO pokazują, że woda w kanałach nadaje się do spożycia po wstępnym uzdatnieniu. Różne wskaźniki, takie jak przewodnictwo elektrolityczne, stężenie węglanu sodu, ilość całkowitej zawiesiny i twardość dowodzą, że analizowane wody nadają się do nawodnień.
Źródło:
Journal of Water and Land Development; 2013, no. 19 [VII-XII]; 3-11
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Risk factors for low birth weight in El Jadida Province, Morocco. Case-control study
Autorzy:
Elfane, H.
El-Jamal, S.
Mziwira, M.
Barakat, I.
Sahel, K.
El Ayachi, M.
Belahsen, R.
Powiązania:
https://bibliotekanauki.pl/articles/28765618.pdf
Data publikacji:
2022
Wydawca:
Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Opis:
Background. Low birth weight (LBW) is considered to be one of the most important indicators of a newborn's chances of survival, and a major risk of medium- and long-term morbidity. Objective. To identify risk factors associated with low birth weight newborns among pregnant women during childbirth in Moroccan hospital environment with a view to proposing avenues of intervention for its prevention. Material and methods. Data concerning the weight of newborns at birth, nutritional education, pregnancy monitoring and other risk factors, etc. were collected from 312 pregnant women who gave birth in the maternity ward of El-Jadida Provincial Hospital in Morocco. Results. The study identified 156 cases of newborns with LBW and 156 controls of normal-weight newborns. After adjustment for the variables included in the analysis, the determined factors associated with LBW are nutritional education [OR: 6.22 (2.60-14.87), P<0.001], illiterate women [OR: 8.74 (1.65-46.08), P=0.011], insufficient pregnancy monitoring [OR: 5.69 (2.74-11.83),P<0.001], pregnant women with a normal weight [OR: 3.84 (1.73-8.52), P=0.001], lack of psychological support [OR: 3.23 (1.72-6.08), P<0.001] and tiring domestic activity [OR: 2.13 (1.14-3.99), P=0.017]. Conclusion. Promotion of nutrition for pregnant women, proper implementation of maternal health programs and improvement of their social condition are the modifiable factors that should help reduce LBW risk.
Źródło:
Roczniki Państwowego Zakładu Higieny; 2022, 73, 2; 209-214
0035-7715
Pojawia się w:
Roczniki Państwowego Zakładu Higieny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Validation of conceptual and methodological framework for the study of dietary practices and nutritional status of an adult population
Autorzy:
Barakat, I.
Elayachi, M.
Belahsen, R.
Powiązania:
https://bibliotekanauki.pl/articles/28765616.pdf
Data publikacji:
2022
Wydawca:
Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Opis:
Background. The use of validated and reliable methods and instruments is necessary to study dietary practices and nutritional status due to their direct impacts on population health. Objective. The aim is the validity and reliability of the conceptual and methodological framework of research on factors associated with dietary practices and nutritional status (FADPNS), carried out on adult population of the Rabat-Salé- Kenitra region in Morocco. Material and methods. First, we developed a conceptual and methodological framework for research on FADPNS, which aimed to study dietary practices, nutritional status, and the factors associated with them in an adult Moroccan population. Then, we studied the validity and reliability of this framework in three phases. Phase 1 focused on the validation of the content of the conceptual and methodological framework, Phase 2 focused on the study by an expert committee of the internal consistency validity (ICV) of the questionnaires used in this research , and Phase 3 consisted of the study of the reliability of the items questionnaires by the test of Cronbach Alpha. Results. Thus, the validated content of the conceptual framework of research on FADPNS includes socio-demographic, socio-economic, and socio-cultural characteristics; health status; physical activity, places of food purchase; food preparation, taking of meals, family commensality; social representations of good dietary practices; food consumption; and nutritional status. The questionnaires used in this research received an ICV score of 85%. The reliability test of the questionnaires showed a Cronbach Alpha value ≥ 0.5, which turned out to vary from "moderate" to "excellent". Conclusion. This work enabled the validation of the conceptual framework and the methodology of the study of the factors associated with dietary practices and nutritional status in the RSK region.
Źródło:
Roczniki Państwowego Zakładu Higieny; 2022, 73, 2; 199-207
0035-7715
Pojawia się w:
Roczniki Państwowego Zakładu Higieny
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-10 z 15

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