This research was carried out at Microbiol. Lab., Faculty of Agric., Damietta Univ. to evaluate the water and fish of River Nile. Water and fish samples were collected from the same site of River Nile in Damietta governorate namely Farskour city during spring, summer, autumn and winter at 2014. All fishes obtained from Rive Nile […]
Problem-Solving and Concept Mapping Strategies as Determinants of Students’ Achievement in Some Environmental Concepts in Chemistry
The study investigated the relative effects of problem-solving and concept mapping strategies on students’ achievement of some environmental concepts in senior secondary school chemistry. The study also sought to know the moderating effects of students’ gender and verbal ability on students’ achievement in environmental concepts. The study adopted pre-test, post-test quasi-experimental design. The population was […]
Cytoprotective, Conjugative and Antioxidant Activities of Glutathione; and Its Role in Removal of Toxic Metabolites and Protein Protection: A Review
The purpose of this paper is to examine the role of glutathione in cytoprotection, xenobiotics metabolism and conjugation of reactive metabolites as well as its role in Protein s- glutathionylation induced by reactive oxygen and nitrosative species. We reviewed published literatures addressing the xenobiotics detoxification, involvement of methylglyoxal in glycation and cellular damage as well […]
Cu (II) and Hg(II) captopril compounds in aqueous media: A calorimetric study
The interactions in aqueous solution of captopril with Cu(II) and Hg(II) cations are investigated through solution calorimetry. The reactions and respective enthalpy values (kJ mol-1) are: Cu2+ (aq) + Captopril (aq) → [Cu.Captopril]2+ (aq), -27,25; Cu2+ (aq) + 2 Captopril (aq) → [Cu.2 Captopril]2+ (aq), -28,37 and Hg2+ (aq) + Captopril (aq) → [Hg.Captopril (aq)]2+ […]
The influence of salicylic acid on 1000 grain weight, germination percent and biological yield of wheat in the sistan region
Salicylic acid (SA) (o-hydroxybenzoic acid), which belongs to a group of plant phenolics, is widely distributed in plants and is now considered as a hormone-like substance, which plays an important role in the regulation of plant growth and development. Exogenous SA alters the activities of antioxidant enzymes and increases plant tolerance to abiotic stress by […]
Effects of Salt Stress on Some Characteristics in Crop Plants
Salinity is a major environmental factor determining plant productivity and plant distribution. It affects more than 10 percent of arable land and salinization is rapidly increasing on a global scale, declining average yield for most major crop plants by more than 50 percent. Salt stress occurs in areas where soils are naturally high in salt […]
Determination of amino acids and physico-chemical properties of juice samples produced from five varieties of tigernut (Cyperus esculentus)
Abstract Production of tigernut juice from four varieties of tigernut (Tiger-Var01, Tiger-Var02, Tiger-Var03 and Tiger-Var04) was carried out in this study, with the aim of analysing some of its chemical properties and amino acids. The organoleptic properties of the juice samples were also investigated. The pH of the juice samples ranged between 6.57 and 6.61, […]
Families of Common Synthetic Agrochemicals Designed to Target Insect Pests or Vectors in Landscapes and Households
Abstract The global usage of agrochemicals is expanding in scale and intensity, thus, objective of completing this article is to know the properties of chemical families used to manage insect pests and vectors concerning health and environmental risks. Insecticides are grouped into families according to chemical structure and knowing about the chemical family allows an […]
Synthesis and Characterization of Fe3O4 Magnetite Nanoparticles Coated with Silica Nanoparticles
Abstract Fe3O4 nanoparticles have been successfully synthesized by modification of the preparation method of Fe3O4 nano-particles, which were prepared from Iron (III) Chloride hexahydrate FeCl3.6H2O, Ferrous Chloride FeCl2.4H2O, Ammonia Solution (NH4OH)and silica nanoparticles. In this study, a new preparation of Fe3O4 nanoparticles and Fe3O4 nanoparticles coated with silica nanoparticles were reported. The characterization of Fe3O4 […]
Potential Uses of Synergists in Insecticides Resistance Management Accompanied by Their Contributions as Control Agents and Research Tools
Abstract Insecticides form a major proportion of the agricultural products and their importance and impact on the farm cannot be denied. In this context, new molecules and strategies are urgently needed to preserve the efficacy of insecticide-treated materials used in public health. The purpose of this paper is to consider the best possible roles of […]