INFLUENCE OF GREEN-HOUSE COVER ON POTENTIAL EVAPOTRANSPIRATION AND CUCUMBER WATER REQUIREMENTS

The experiment was conducted through two successive seasons of 2008 and 2009 at El-Bosaily farm, El-Behira governorate at the North Coastal of the Nile Delta, in Egypt. This work aimed to study the effect of three green-house covers (polyethylene sheet, white and black net) and three irrigation levels [80%, 100% and 120% of the potential evapotranspiration estimated according to class A pan equation (ETo)], applied by drip irrigation system, on plant growth and crop yield of Cucumber (Cucumis sativus L. cv. Reda F1). The experimental design was split- plot with three replicates. The results showed that white net green-house cover optimized growth and yield of cucumber plant. White net cover treatment recorded the highest vegetative growth (plant height, number of leaves, total leaves area, total fresh and dry weights), and significantly increased total yield. The highest vegetative growth was obtained by 100% ETo compared to 80 and 120% ETo treatments. The interaction among water treatment and green-house cover indicated the highest vegetative growth and crop yield were obtained under white net cover with 100% ETo

Incidence of hip fracture in Saudi Arabia and the development of a FRAX model

Summary A prospective hospital-based survey in representative regions of Saudi Arabia determined the incidence of fractures at the hip. The hip fracture rates were used to create a FRAX® model to facilitate fracture risk assessment in Saudi Arabia. Objective This paper describes the incidence of hip fracture in the Kingdom of Saudi Arabia that was used to characterize the current and future burden of hip fracture, to develop a country-specific FRAX® tool for fracture prediction and to compare fracture probabilities with neighbouring countries. Methods During a 2-year (2017/2018) prospective survey in 15 hospitals with a defined catchment population, hip fractures in Saudi citizens were prospectively identified from hospital registers. The number of hip fractures and future burden was determined from national demography. Age- and sex-specific incidence of hip fracture and national mortality rates were incorporated into a FRAX model for Saudi Arabia. Fracture probabilities were compared with those from Kuwait and Abu Dhabi. Results The incidence of hip fracture applied nationally suggested that the estimated number of hip fractures nationwide in persons over the age of 50 years for 2015 was 2,949 and is predicted to increase nearly sevenfold to 20,328 in 2050. Hip fracture rates were comparable with estimates from Abu Dhabi and Kuwait. By contrast, probabilities of a major osteoporotic fracture or hip fracture from the age of 70 years were much lower than those seen in Abu Dhabi and Kuwait due to higher mortality estimates for Saudi Arabia. Conclusion A country-specific FRAX tool for fracture prediction has been developed for Saudi Arabia which is expected to help guide decisions about treatment

Antioxidant activity of Mayodendron igneum Kurz and the cytotoxicity of the isolated terpenoids

A petroleum ether extract of Mayodendron igneum Kurz, (Family Bignoniaceae) yielded five compounds identified as sitosterol, erythrodiol, oleanolic acid, ursolic acid and 5\u27, 6\u27 norigeumone. Antioxidant activity of total ethanol extracts of the plant was equal to 77.02% of the antioxidant activity of ascorbic acid (100%) as measured by electron spin resonance (ESR) and using DPPH as the stable free radical. The antioxidant activity of successive fractions of M. igneum leaves were tested with the strongest inhibition of DPPH stable free radicals exhibited by the successive ethanol fraction (equal to 100% of free radical scavenging activity relative to ascorbic acid). The ethyl acetate fraction had 64.96% of the antioxidant activity of ascorbic acid, and the petroleum ether and chloroform fractions had 12.46% and 0%, respectively, of the antioxidant activity of ascorbic acid. An examination of isolated oleanolic acid demonstrated moderate cytotoxic activity against four tested cancer cell lines (liver, cervix, breast, and colon). The highest activity level was against the cervix cancer cell line (HELA) (IC50= 32 µg/mL), followed by the liver cancer cell line (HEPG2) (IC50=33 µg/mL), the colon cancer cell line (HCT-116) (IC50= 35 µg/mL), and the breast cancer cell line (MCF7) (IC50= 37 µg/mL)

Influence of green-house cover on potential evapotranspiration and cucumber water requirements

Pollen grain morphology and seed coat characters of 11 cultivars belonging to two species. The experiment was conducted through two successive seasons of 2008 and 2009 at El-Bosaily farm, El-Behira governorate at the North Coastal of the Nile Delta, in Egypt. This work aimed to study the effect of three green-house covers (polyethylene sheet, white and black net) and three irrigation levels [80%, 100% and 120% of the potential evapotranspiration estimated according to class A pan equation (ETo)], applied by drip irrigation system, on plant growth and crop yield of Cucumber (Cucumis sativus L. cv. Reda F1). The experimental design was split–plot with three replicates. The results showed that white net green-house cover optimized growth and yield of cucumber plant. White net cover treatment recorded the highest vegetative growth (plant height, number of leaves, total leaves area, total fresh and dry weights), and significantly increased total yield. The highest vegetative growth was obtained by 100% ETo compared to 80% and 120% ETo treatments. The interaction among water treatment and green-house cover indicated the highest vegetative growth and crop yield was obtained under white net cover with 100% ETo