In the developing countries like Ethiopia most of the environmental problems are caused by underdevelopment. Millions continue to live far below the minimum levels required for a decent human existence, deprived of adequate food and clothing, shelter and education, health direct their efforts to development, bearing in mind their priorities and the need to safeguard and improve the environment. For the same purpose, the industrialized countries should make efforts to reduce the gap themselves and the developing countries, environmental problems are generally related to industrialization and technological development (Yared, 2017:17).
This paper calculates the existing system reliability index and typical daily optimal load distribution, studies the optimization problem of the generator unit’s investment plan in the next ten years, and uses the minimum cost of the investment plan to establish a multi-objective planning model. Combined with the artificial bee colony algorithm. It also discusses the impact of a large number of renewable energy power generation access power systems on traditional power system planning, and proposes an experimental model to solve this problem. Based on the system enumeration method of fault enumeration, enumerate all possible states of the system at each moment, consider the total cost of the system, increase the load demand constraint on the basis, and obtain the probability of occurrence of low-order faults. LOLP, EENS and power outage fees. After the above analysis, after the fault order reaches 5th order, the LOLP of the system is negligible, so the power loss cost is considered to be 4th order. Using the minimum total cost as the objective function, the artificial bee colony algorithm is used to find the optimal solution. The uncertainty of the output of renewable energy in the power system greatly increases the risk of operation scheduling, does not guarantee the quality of power, and is currently economically poor. In view of the difficulties caused by the system components in solving nonlinear constrained power supply planning, an experimental model is also established.
The present study was carried out to determine various physico-chemical parameters and water quality index of the Patancheru in Medak District of Telangana state to examine the quality of water for public consumption, recreation and other purposes. This study deals with the influence of environmental factors as well as domestic activities in the water quality in the related area.
DPPH Free Radical Scavenging Activity of Ethanolic Extracts of Twenty two Medicinal Species From South Algeria (Laghouat region)
Free radicals scavenging Activity, total phenolic and flavonoids contents of Twenty two ethanolic extracts, from the botanical families Asteraceae, Lamiaceae, Amaranthaceae, Chenopodiaceae, Cupressaceae, Ericaceae and Rhamnaceae, collected from the Laghouat region (Algeria Sahara) were investigated. The 2,2-diphenyl-1-picrylhydrazyl radical assay was used to determine the antioxidant activity of the plant extracts, while the Folin–Ciocalteu method was used to determine the total phenolic content and flavonoids using AlCl3 method . The antioxidant capacity expressed as IC50 values ranged from 20 µg/ml for O. basilicum to 650 ± 8.60 µg/ml for A. iva. The total phenolic content ranged from 2.72 to 87.11 mg/g of dry weight of extract, expressed as gallic acid equivalents. The total flavonoid concentrations varied from 1.48 to 12.59 mg/g, expressed as rutin equivalents. The results of this study showed that there is no significant correlation between antioxidant activity and phenolic content of the studied plant materials and phenolic content could not be a good indicator of antioxidant capacity.
INFLUENCE OF CASSAVA MILL EFFLUENT ON THE GROWTH RATE OF TWO SELECTED ARABLE CROP SPECIES (Zea Mays And Vigna Unguiculata L.)
Hydrogen cyanide is the dominant element in cassava mill effluent with several toxicological implications. Physiochemical analysis was carried out on the soil samples gotten from three different cassava tuber processing mills located at Amaoba, Umuarigha I, and Umuarigha II in Ikwuano Local Government area of Abia state. The parameters investigated were pH, nitrogen, phosphorous, organic carbon, organic matter; others were the sodium, calcium, potassium and magnesium contents. All the afore-mentioned parameters were also analyzed for control sample. The result showed that there was an increase in soil pH, nitrogen and magnesium content of the cassava mill soils. The effect on plant growth rate was studied using maize and cowpea as test crops. The number of leaves, stem girth and length was recorded for a period of eight (8) weeks. The result after eight (8) weeks showed that the growth rate of seedlings on the soil of the three different cassava mills was rapid more than that of the control. This research shows that the cyanide content of the cassava mill effluent had a stimulatory effect on the parameters measured and could serve as an efficient source of nutrient to the soil and thus to crops, making it an alternative to mineral fertilisers.
Vermicomposting of different proportion of floral waste (FW)-cattle dung (CD) mixtures were carried out under aerobic condition in a plastic bins to find the rate of depletion of biomass. The initial substrate depth of five different compositions viz. 100% FW, 75% FW, 50% FW, 25% FW and 100% CD were 25cm, 16 cm, 13 cm, 11 cm and 8 cm respectively. The rate of biomass reduction was high in 100% FW which was decreased with increasing the quantity of cattle dung. The time for substrate stabilization during vermicomposting was also found to be lesser in summer as compared to rainy season. The substrate depth variation with respect to time followed a declined curve.
Agro-homeopathy, which allows to influence biological processes of plants by either accelerating or delaying growth. Moreover, it can contribute to the control of plagues and diseases, directly promoting an increase of the yield and an improvement of product qualitative traits
Urban, industrial, biomass and biomedical wastes are being generated in huge quantities world over causing significant environmental problems including human health. Such generation of waste is on increasing trend with the increase in population along with corresponding increase in industrialization and urbanization. In order to address such an alarming issue of such waste, it has become essential to effectively manage such wastes including transforming this waste into usable product through technological development and innovation techniques which would not only take care of environmental problems but also act as economic tools to manage wastes. An effort has therefore been made by the authors of the present paper to discuss and explain the total population of class- 1 towns in India, the total anticipated quantity of waste generated and the predicted energy generation including financial feasibility along with various technological options available to transform such wastes into energy, fuel pallets, compost, and methane gas etc.