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An Evaluation to the Performance of Evacuated Tube Solar Heaters for Arid and Hot Areas

Energy Engineering 2023年第3期120卷 587-596页

作者： Asaad H.Sayer samah hussein kadhim Hameed B.Mahood Department of Chemistry College of ScienceUniversity of Thi-QarNasiriyahIraq Centre for Sustainable Cooling School of Chemical EngineeringUniversity of BirminghamBirminghamUK

Solar energy applications could be the best alternative to the conventional fuels for the purposes of domestic,water and space heating and some industries in the sunny,arid,and hot *** the present study,the performance of an evacuated tube solar heater for water heating for months of February and March was experimentally *** was performed in a hot and arid area(Nasiriya City,South of Iraq).A solar heater with ten evacuated tube solar collectors with a capacity of 100 liter was used in the *** evacuated tube had a length of 1.8m with an outside diameter of 8 *** was observed that for the two selected months,water temperature of the solar heater reached a maximum more than 70°C during sunny days with no heat extraction from the tank of the solar ***,heat was extracted from the solar collector with four different flowrates 0.5,0.75,1,and 1.25 l/min,*** results showed that temperature of the solar heater behaved differently from the static *** the heat extraction begun,there was a gradual and noticeable decrease in the water temperature of the *** observed decrease was slight with the lowest flowrate(0.25 l/m)and becomes sharp with the highest flowrate(1.25 l/min).However,water temperature of the solar heater remained higher than 40°C for the investigated flowrates except the case of 1.25 l/*** results showed that evacuated tube solar heater can work efficiently in arid and hot areas in winter and spring seasons when the conditions of solar radiation are suitable.

关键词： Solar energy evacuated tubes solar collectors

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Impact of carbimazole combined with vitamin E on testicular injury induced by experimental hyperthyroidism in adult albino rats:oxidative/inflammatory/apoptotic pathways

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Asian Journal of Andrology 2024年第4期26卷 396-401页

作者： Ramadan S hussein Moustafa M Eyada Rashad M Mostafa samah M Elaidy Shereen H Elsayed Hany M Saad Department of Dermatology College of Medicine Prince Sattam Bin Abdulaziz UniversityAl-Kharj 16242Saudi Arabia Department of Dermatology Andrology and STDsAssiut Police HospitalAssiut 71525Egypt Department of Dermatology Venereology and AndrologyFaculty of MedicineSuez Canal UniversityIsmailia 41522Egypt Department of Andrology and Sexology Faculty of MedicineSuez Canal UniversityIsmailia 41511Egypt Department of Clinical Pharmacology Faculty of MedicineSuez Canal UniversityIsmailia 41511Egypt Department of Rehabilitation Sciences Faculty of Health and Rehabilitation SciencesPrincess Nourah bint Abdulrahman UniversityRiyadh 12271Saudi Arabia.

Thyroid hormones play essential roles in spermatogenesis,but their effects on infertile males remain poorly *** study aimed to evaluate the impact of combining carbimazole(CBZ)with vitamin E(VE)on testicular injury induced by experimental hyperthyroidism in adult albino rats,focusing on oxidative,inflammatory,and apoptotic *** this experimental study,64 adult male albino Wistar rats were divided into eight groups:Group I(control-untreated),Group II(CBZ-control),Group III(VE-control),Group IV(CBZ+VE-control),Group V(levothyroxine-induced testicular injury),Group VI(levothyroxine+CBZ-treated),Group VII(levothyroxine+VE-treated),and Group VIII(levothyroxine+CBZ+VE-treated).The study was conducted in the Faculty of Medicine,Suez Canal University(Ismailia,Egypt).After cervical decapitation,both testes and epididymis were examined histopathologically and *** differences were observed among groups concerning malondialdehyde(MDA),glutathione(GSH),superoxide dismutase(SOD),and catalase(CAT;all P<0.001).Polymerase chain reaction analysis showed significant differences in tumor necrosis factor-α(TNF-α),interleukin-10(IL-10),Bcl-2-associated X protein(BAX),B-cell lymphoma 2 protein(Bcl2),p53,Caspase-3,Caspase-8,Caspase-9,and nuclear factor-kappa B(NF-κB)mRNA levels(all P<0.001).Hyperthyroid group treated with CBZ alone(Group VI)exhibited testicular side effects,affecting seminiferous tubules and ***,the Group VIII showed improved spermatogenesis and a decrease in testicular side *** addition of VE to the treatment of hyperthyroid rats with CBZ reduced testicular side effects and seminiferous tubular affection when potentially improving *** research is needed to elucidate the underlying mechanisms fully.

关键词： antithyroid drugs testicular injury thyroid gland vitamin E

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Review:Asphalt Pavement Rutting Distress and Affects on Traffics Safety

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Journal of Traffic and Transportation Engineering 2022年第1期10卷 35-39页

作者： Ahmed samah Shyaa Ir Dr Raha Abd Rahma Department of Highway and Traffic Engineering Faculty of Civil Engineering and EnvironmentalUniversity Tun Hussein Onn Malaysia86400 Parit RajaBatu PahatJohor

Highway is an essential facility that led to both economic success and quality of *** is necessary to ensure that highway will able to continue to carry out its *** rutting of asphalt pavement structures during their exploitation is considered to be one of the main problems in the entire *** kind of pavement distress makes a negative impact to the exploitation characteristics of the asphalt pavement to the residual life of pavement structure,also to the safety and quality of the *** main purpose of this review is to define the effects of rutting on roads safety.

关键词： Pavement distress rutting safety

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