Management of Tomato Root-knot Nematode Meloidogyne incognita by Plant Extracts and Essential Oils

Kamal A. M. Abo-Elyousr,Magd El-Morsi Awad,M. A. Abdel Gaid 한국식물병리학회 2009 Plant Pathology Journal Vol.25 No.2

The effect of plant extracts of eucalyptus (Eucalyptus chamadulonsis), garlic (Allium sativium), marigold (Tagetes erecta) and neem (Azadirachta indica) and essential oils were tested on the suppression of root-knot nematode Meloidogyne incognita under greenhouse and field conditions. In vitro study, all tested treatments had nematicidal effect on nematode juveniles after 24 and 48 hours from exposures. The highest percentage of nematode mortality was achieved by application of neem extract (65.4%), essential oils (64.4%) and marigold extract (60.5%), followed by garlic and eucalyptus extracts (38.7-39.5%). Under greenhouse and field conditions, neem extract and essential oils treatments were more effective in reducing population numbers of the M. incognita in soil and root gall index compared to other treatments. In field experiments, the maximum protection of tomato plant against root-knot nematode was obtained by application of neem and essential oil treatments, 44.2 and 32.6%, respectively.

Management of Tomato Root-knot Nematode Meloidogyne incognita by Plant Extracts and Essential Oils

Abo-Elyousr, Kamal A.M.,Awad, Magd El-Morsi,Gaid, M.A. Abdel The Korean Society of Plant Pathology 2009 Plant Pathology Journal Vol.25 No.2

The effect of plant extracts of eucalyptus (Eucalyptus chamadulonsis), garlic (Allium sativium), marigold (Tagetes erecta) and neem (Azadirachta indica) and essential oils were tested on the suppression of root-knot nematode Meloidogyne incognita under greenhouse and field conditions. In vitro study, all tested treatments had nematicidal effect on nematode juveniles after 24 and 48 hours from exposures. The highest percentage of nematode mortality was achieved by application of neem extract (65.4%), essential oils (64.4%) and marigold extract (60.5%), followed by garlic and eucalyptus extracts (38.7-39.5%). Under greenhouse and field conditions, neem extract and essential oils treatments were more effective in reducing population numbers of the M. incognita in soil and root gall index compared to other treatments. In field experiments, the maximum protection of tomato plant against root-knot nematode was obtained by application of neem and essential oil treatments, 44.2 and 32.6%, respectively.

Cytotoxicity of Trichoderma spp. Cultural Filtrate Against Human Cervical and Breast Cancer Cell Lines

El-Rahman, Atef Abd El-Mohsen Abd,El-Shafei, Sally Mohamed Abd El-Aziz,Ivanova, Elena Vladimirovna,Fattakhova, Alfia Nurlimanovna,Pankova, Anna Victorovna,El-Shafei, Mohamed Abd El-Aziz,El-Morsi, El-M Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.17

Trichoderma spp. are known as a rich source of secondary metabolites with biological activity belonging to a variety of classes of chemical compounds. These fungi also are well known for their ability to produce a wide range of antibiotic substances and to parasitize other fungi. In search for new substances, which might act as anticancer agents, the overall objective of this study was to investigate the cytotoxic effects of Trichoderma harzianum and Trichoderma asperellum cultural filtrates against human cervical and breast cancer cell lines (HeLa and MCF-7 cells respectively). To achieve this objective, cells were exposed to 20, 40, 60, 80 and 100 mg/ml of both T. harzianum cultural filtrate (ThCF) and T. asperellum cultural filtrate (TaCF) for 24h, then the cell viability and the cytotoxic responses were assessed by using trypan blue and 3-(4,5-dimethylthiazol-2yl)-2,5-biphenyl tetrazolium bromide (MTT) assays. Morphological changes in cells were investigated by phase contrast inverted microscopy. The results showed that ThCF and TaCF significantly reduce the cell viability, have cytotoxic effects and alter the cellular morphology of HeLa and MCF-7 cells in a concentration dependent manner. A concentration of 80 and 100mg/ml of ThCF resulted in a sharp decline in the cell viability percent of HeLa and MCF-7 respectively (25.2%, 26.5%) which was recorded by trypan blue assay. The half-maximal inhibitory concentrations ($IC_{50}$) of ThCF and TaCF in HeLa and MCF-7 were recorded as 16.6, 12.0, 19.6 and 0.70mg/ml respectively by MTT assay. These results revealed that ThCF and TaCF have a substantial ability to reduce the viability and proliferation of human cervical and breast cancer cells.

Determination of the Optical Properties of Bent Optical Fibre by Using an Automatic Fringe Pattern Analysis

M. A. M. El-Morsy,H. H. Wahba 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.5

The automatic multiple-beam Fizeau fringes technique with the aid of the slabs model is used to characterize the macroscopic and microscopic optical parameters of the bent optical fibre cladding. The contour line of the interferogram is obtained using one dimensional Fourier transform. The used mathematical expressions based on the consideration of refraction of the beam through the liquid/bent fibre interface. The refractive index profile, the induced birefringence profile and the dispersions are studied along the cladding diameter. The influences of the dispersion parameters such as the oscillation energy E_0 and the dispersion energy Ed for the optical fibre cladding due to bending are investigated. Also the variation occurred in the molecular Polarizability and corresponding parameters are illustrated.

Effect of the Volatile Oil of Nigella sativa Seeds and Its Components on Body Temperature of Mice: Elucidation of the Mechanisms of Action

M. M. Ashour,K. E. H. El Tahir,M.G. Morsi,N.A. Aba-Alkhail 한국생약학회 2006 Natural Product Sciences Vol.12 No.1

effect(s) of the volatile oil (VO) of Nigella sativa and its two components, α-pinene and ρ-cymeneon body temperature of male and female conscious mice were studied. Further investigations to delineate themechanism(s) of action of the observed efect(s) by using various blockers involved in the central regulation ofbody temperature were made. VO and α-pinene caused significant reductions in rectal body temperature at is and30 minute after treatment. ρVO and α-pinene-induced hypothermia significantly. Nalbuphine inhibited α-pinene-induced hypothermiasignificantly but did not affect VO-induced hypothermia. Droperidol potentiated VO and α-pinene-inducedhypothermia to a non-significant level; whereas atropine potentiated VO-induced hypothermia non-significantly.The study confirms further the role of serotoninergic receptors in the mechanism(s) of the observedpharmacological efects of the VO of Nigella sativa. It also indicated a possible role of opioid receptors in α-KeywordsNigella sativa, α-pinene, ρ-cymene, receptor blockers, serotoninergic receptors

Utilization of alternative marine fuels for gas turbine power plant onboard ships

El Gohary, M. Morsy,Seddiek, Ibrahim Sadek The Society of Naval Architects of Korea 2013 International Journal of Naval Architecture and Oc Vol.5 No.1

Marine transportation industry is undergoing a number of problems. Some of these problems are associated with conventional marine fuel-oils. Many researchers have showed that fuel-oil is considered as the main component that causes both environmental and economic problems, especially with the continuous rising of fuel cost. This paper investigates the capability of using natural gas and hydrogen as alternative fuel instead of diesel oil for marine gas turbine, the effect of the alternative fuel on gas turbine thermodynamic performance and the employed mathematical model. The results showed that since the natural gas is categorized as hydrocarbon fuel, the thermodynamic performance of the gas turbine cycle using the natural gas was found to be close to the diesel case performance. The gas turbine thermal efficiency was found to be 1% less in the case of hydrogen compared to the original case of diesel.

Effect of elevated temperature on physico-mechanical properties of metakaolin blended cement mortar

Morsy, M.S.,Rashad, A.M.,El-Nouhy, H.A. Techno-Press 2009 Structural Engineering and Mechanics, An Int'l Jou Vol.31 No.1

An experimental investigation was conducted to evaluate the performance of mortars with and without Metakaolin (MK) exposed to elevated temperatures $200^{\circ}C$, $400^{\circ}C$, $600^{\circ}C$ and $800^{\circ}C$ for two hours. The binder to sand ratio was kept constant (1:5.23). The ordinary Portland cement (OPC) was replaced with MK at 0%, 5%, 10% 20% and 30%. All mixtures were designed to have a flow of $94{\pm}5%$. The compressive strength of mortars before and after exposure to elevated temperature was determined. The formation of various decomposition phases were identified using X-ray diffractometry (XRD) and differential thermal analysis (DTA). The microstructure of the mortars was examined using scanning electron microscope (SEM). Test results indicated that MK improves the compressive strength before and after exposure to elevated temperature and that the 20% cement replacement of MK is the optimum percentage.

Utilization of alternative marine fuels for gas turbine power plant onboard ships

M. Morsy El Gohary,Ibrahim Sadek Seddiek 대한조선학회 2013 International Journal of Naval Architecture and Oc Vol.5 No.1

Marine transportation industry is undergoing a number of problems. Some of these problems are associated with conventional marine fuel-oils. Many researchers have showed that fuel-oil is considered as the main component that causes both environmental and economic problems, especially with the continuous rising of fuel cost. This paper investigates the capability of using natural gas and hydrogen as alternative fuel instead of diesel oil for marine gas turbine, the effect of the alternative fuel on gas turbine thermodynamic performance and the employed mathematical model. The results showed that since the natural gas is categorized as hydrocarbon fuel, the thermodynamic performance of the gas turbine cycle using the natural gas was found to be close to the diesel case performance. The gas turbine thermal efficiency was found to be 1% less in the case of hydrogen compared to the original case of diesel.

Environmental analysis of present and future fuels in 2D simple model marine gas tubines

M. Morsy El Gohary 대한조선학회 2013 International Journal of Naval Architecture and Oc Vol.5 No.4

Increased worldwide concerns about fossil fuel costs and effects on the environment lead many governments and scientific societies to consider the hydrogen as the fuel of the future. Many researches have been made to assess the suitability of using the hydrogen gas as fuel for internal combustion engines and gas turbines; this suitability was assessed from several viewpoints including the combustion characteristics, the fuel production and storage and also the thermodynamic cycle changes with the application of hydrogen instead of ordinary fossil fuels. This paper introduces the basic environmental differences happening when changing the fuel of a marine gas turbine from marine diesel fuel to gaseous hydrogen for the same power output. Environmentally, the hydrogen is the best when the CO2emissions are considered, zero carbon dioxide emissions can be theoretically attained. But when the NOx emissions are considered, the hydrogen is not the best based on the unit heat input. The hydrogen produces 270% more NOx than the diesel case without any control measures. This is primarily due to the increased air flow rate bringing more nitrogen into the combustion chamber and the increased combustion temperature (10% more than the diesel case). Efficient and of course expensive NOx control measures are a must to control these emissions levels.

Environmental analysis of present and future fuels in 2D simple model marine gas tubines

El Gohary, M. Morsy The Society of Naval Architects of Korea 2013 International Journal of Naval Architecture and Oc Vol.5 No.4

Increased worldwide concerns about fossil fuel costs and effects on the environment lead many governments and scientific societies to consider the hydrogen as the fuel of the future. Many researches have been made to assess the suitability of using the hydrogen gas as fuel for internal combustion engines and gas turbines; this suitability was assessed from several viewpoints including the combustion characteristics, the fuel production and storage and also the thermodynamic cycle changes with the application of hydrogen instead of ordinary fossil fuels. This paper introduces the basic environmental differences happening when changing the fuel of a marine gas turbine from marine diesel fuel to gaseous hydrogen for the same power output. Environmentally, the hydrogen is the best when the $CO_2$ emissions are considered, zero carbon dioxide emissions can be theoretically attained. But when the $NO_x$ emissions are considered, the hydrogen is not the best based on the unit heat input. The hydrogen produces 270% more $NO_x$ than the diesel case without any control measures. This is primarily due to the increased air flow rate bringing more nitrogen into the combustion chamber and the increased combustion temperature (10% more than the diesel case). Efficient and of course expensive $NO_x$ control measures are a must to control these emissions levels.