Egyptian Academic Society for Environmental DevelopmentInternational Journal of Development2314-55369120201201Assessing alcohol drinking measures, motives and problems among university students in the UK187318910.21608/idj.2020.73189ENMohammed AlghamdiFaculty of Arts and Humanities, King Abdul-Aziz University, Kingdom of Saudi ArabiaJournal Article20200110This study investigated the correlation between university student drinking measures, the motives for drinking and the actual consequences/problems of drinking. It was conducted using quantifiable data collected via online surveys from 126 university student drinkers. The results of the study revealed that the more units, and the greater frequency of consumption, were associated with a higher likelihood of physical and psychological consequences, and a reduction of the quality of life. The results also indicated that the most significant outcome was adverse effects on interpersonal relationships. The greatest motives were conformity, social relationships, and mood enhancements. The results of this study had been discussed.https://ijd.journals.ekb.eg/article_73189_2e7c6ba331ce5ae1f82e1f95be2b318b.pdfEgyptian Academic Society for Environmental DevelopmentInternational Journal of Development2314-55369120201201Study of the effects of different monosex Nile tilapia (Oreochromis niloticus) fingerlings densitieson Lettuce (Lactuca sativa) and water quality in a low-techrecirculation aquaponic system92114571610.21608/idj.2020.145716ENMohsen HusseinFish Production Department, Faculty of Agriculture, Al-Azhar Univ., Nasr City, Cairo, EgyptAhmed ELzayatFish Production Department, Faculty of Agriculture, Al-Azhar Univ., Nasr City, Cairo, EgyptMohammed BauomiFish Production Department, Faculty of Agriculture, Al-Azhar Univ., Nasr City, Cairo, EgyptJournal Article20200122The sustainable food initiatives and awareness amongst development interest has increased rapidly the technology of aquaponics in recent years due to widespread interest in local agencies that aquaponics may allow for the production of both vegetables and fish in water-deficient or soil-deficient zones. The present study aimed to compare rearing of three different fish (<em>Oreochromis niloticus</em>) fingerlings densities on the growth of lettuce (<em>Lactuca sativa </em>var. <em>capitata</em>) and water quality in a shallow water low-tech recirculation aquaponic system. The experimental aquaria were designed in 12 longitudinal aquaria of equal volum of 105L.<sup>3</sup>The treatments (Aquaponic <em>vs</em> Hydroponic) in this study were set-up for 56 days under 4treatments with three replications. T1, control (lettuce plant only using Hoagland solution), T2, T3, and T4 where stocking density of tilapia were 150(15 fish/ aquar.), 175(17 fish/ aquar.) and 200(20 fish/ aquar.) fish/m<sup>3</sup> with Lettuce plants, respectively. Fish was fed up to satiation twice a day with commercially available floating pellet with 30% protein level. The wastewater from the fish aquarium was irrigated to the vegetable bed by a 40 watt submersible water pump. During the experimental period different water quality parameters were monitored regularly. Growth and yield of Lettuce were measured by means of fresh weight, dry weight (g), leaf area (cm<sup>2</sup>), and Chlorophyll (SPAD). The range of water temperature was 27 to 29<sup>o</sup> C (av. 28<sup> o</sup> C), dissolve oxygen 6.8 to 7.4 mg/l (av. 7.1 mg/l), pH 7.10 to 7.4(av. 7.25), total ammonia (mg/l) 0.10 to 12.0 mg/l (av. 0.11 mg/l), nitrite (mg/l) 0.003 to0.005 (av. 0.004 mg/l) and nitrate (mg/l) 140 to 180 (average 160 mg/l). At the end of the experiment, the study suggests that stocking density of 20 fish/aquarium for tilapia, i.e.200 fish/m<sup>3</sup> with Lettuce plants, is suitable for production of both plant and fish in a recirculating aquaponic system because of higher nutrient availability in this aquaponic trough.https://ijd.journals.ekb.eg/article_145716_372037259e94094336b18d710faa7951.pdfEgyptian Academic Society for Environmental DevelopmentInternational Journal of Development2314-55369120201201Estimating the value of the dietary elements of tilapia fish in Ain Tawergha water, Libya232914572010.21608/idj.2020.145720ENSaleh BekiDepartment of Food Sciences - Faculty of Agriculture - Bani Walid University - LibyaJournal Article20200220This study was conducted to find out the nutritional value of tilapia fish found in Ain Tawergha water. As well as to assess the suitability of Ain Tawergha water for growth and development of Tilapia fish. Samples of tilapia fish were caught directly from the Tawerghan basins by fishing nets, and water samples were taken from the same fishing site for analysis. The results obtained from the water samples indicated that the quantities of calcium, magnesium, sodium, and potassium were 292, 147, 494 (and 33 mg/l), respectively, while the amount of chlorine was 915 mg / l, and the water pH was 7.4 and the total dissolved salts were 2940 mg /l. The water was good in transparency and clean without turbidity.
The results also showed that the amount of protein , carbohydrates and fats in fish muscle were 22.086 , 0 and 1.87 g, respectively. The minerals in muscles, calcium, iron and sodium were 12, 0.54, 56 mg, respectively. The cholesterol n muscles was 50 mg. It was also found that tilapia was rich in important fatty acids for the body (omega-3, which was 0.14 mg).https://ijd.journals.ekb.eg/article_145720_223ccd4bc1ebae79c4bbafac6e81db9e.pdfEgyptian Academic Society for Environmental DevelopmentInternational Journal of Development2314-55369120201201Effect of diluents type and preservation periods on some sheep semen characteristics313614572310.21608/idj.2020.145723ENSalah AlragubiDepartment of animal production, Faculty of agriculture, Bani Walid, University, LibyaJournal Article20200330The present study aimed to evaluate three seminal diluents and three conservation periods (0, 48 and 96 hours) on quality of Barki rams. The three diluents tests were citrate-egg yolk , tris – egg yolk and skim milk – egg yolk. The dilution ratio was 1 diluent:10 semen. Semen was collected from barki rams using artificial vagina ram one time monthly in the morning during September, October and November. Semen samples after dilution with the tested diluents were conserved for 48 and 96 hours, then semen quality was evaluated. The results obtained are summarized as following :
1- tris –egg yolk diluent showed the best sperm movement and the livability of the sperm was better compared to the skim milk diluent.
2- tris + skim milk showed the lowest abnormality percentage compared to citrate.
3- The conservation periods had significant effects where the tris- diluent was the best in semen conservation using cooling compared to citrate.
https://ijd.journals.ekb.eg/article_145723_5efeb217d3396b6a816babc9603d3aa1.pdfEgyptian Academic Society for Environmental DevelopmentInternational Journal of Development2314-55369120201201Facile nitrogen-free one-potaqueous synthesis of highly soluble and luminescent CdSe quantum dots374314879510.21608/idj.2020.148795ENElhussein M.HashemChemistry Department, Faculty of Science, Ain-Shams University, Cairo, EgyptMohamed A.AhmedChemistry Department, Faculty of Science, Ain-Shams University, Cairo, EgyptMeshel F.Abdel MessihChemistry Department, Faculty of Science, Ain-Shams University, Cairo, EgyptJournal Article20200429CdSe quantum dots (QDs) have been widely used in a plethora of applications due to their relatively high photocatalytic abilities and unique properties. Herein, we report that highly water-soluble CdSe (QDs) were successfully prepared in an open-air condition without using an inert atmosphere. This has been accomplished through a facile one-pot method by using a novel binary mixture of thioglycolic acid (TGA) and trisodium citrate (TSC) as capping agents. Air stable and cheap sodium selenite (Na<sub>2</sub>SeO<sub>3</sub>) was used as the selenium precursor. Structural and morphological properties of the as-prepared QDs were examined by varying the reflux time and the temporal evolution of the optical. The obtained QDs were characterized by XRD, HRTEM, XPS, UV-Vis absorption, DRS and PL. The results revealed that we can use this facile ‘green’ approach in synthesis high quality, small, spherical and monodispersed QDs which exhibits high optical properties and superior stability in open-air conditions.https://ijd.journals.ekb.eg/article_148795_87f154ee7a75968208687bbe610c6d09.pdfEgyptian Academic Society for Environmental DevelopmentInternational Journal of Development2314-55369120201201Towards compatible land use planning around public airports (Applied case study: Marsa Alam International Airport)456519400110.21608/idj.2019.194001ENAbdel Latif G.A.L.YounesCivil Engineering Department, Faculty of Engineering Mataria, Helwan Univ.Abdelzaher E. A.MostafaCivil Engineering Department, Faculty of Engineering Mataria, Helwan UnivMohamed E.OufCivil Engineering Department, Faculty of Engineering Mataria, Helwan UnivShady M.NoureldinCivil Engineering Department, Faculty of Engineering, Ain Shams Univ.Sahar I.M.AbdElhadyUrban Design Department, Faculty of Regional and Urban Planning, Cairo UniversityJournal Article20190530 This study presents a guide for planners and airports land use commissions about incompatible land uses around public airports that can cause creation of hazards on air navigation and reductions in airport utilization resulting from obstructions to flight paths and incompatible land use resulting from construction near airport. The main target of this research is contributing in putting criteria and restrictions of land uses planning around international Airports (Case Study Marsa Alam International Airport) from Safety and Airspace Protection factors point of view. In this context, the description of land uses around Marsa Alam International Airport was according to the existing land use plan for the nearest urban area.The results of the applied case study showed that some land uses are incompatible with safety factor according to the applied criteria. For unused areas, permitted and prohibited land uses must be determined for each area relative to its location within safety zones. On the other hand, from airspace protection point of view, it was clearly found that height restrictions are necessary for land uses planning around airports and protection of aircraft in flight. Also, residential and other uses around airports must be compatible with airports and the airports approach/departure corridors as a condition of continuity and allowed uses.https://ijd.journals.ekb.eg/article_194001_ca254fcaf0e4851d79c9c0fa4381d46e.pdf