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105 results for “Population growth”
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Research ArticleOpen accessIn the abstractLisrel Analysis of Factors for Empowering Producers to Abolish Livelihood Poverty through Optimizing Agricultural Water Resources ManagementFatemeh Panahi, Iraj MalekmohammadiProblem Statement: Most of the projected increase in global population will take place in third world countries that already suffer from water, food, and health problems. Irrigation in developing countries tends to be stereotyped as equity reducing, in competition with other uses for scarce water resources. Agricultural intensification through the practice of irrigation as a strategy for poverty reduction is … …American Journal of Agricultural and Biological Sciences, Vol. 5, Issue 1 · 31 Mar 2010 · 8,034 accessesView PDFCite
Research ArticleOpen accessIn the abstractNutritional Value of the Maize Stalk Borer and American Bollworm as Unconventional Protein SourcesA.E. Ghaly, F.N. AlkoaikProblem statement: The maize stalk borer and American bollworm were grown in an artificial media to evaluate their potential as human food sources. Approach: Both cultures were started from moths and the life cycle and culture structures were evaluated. Results: The larvae of both insects reached maximum weight and maximum length at the same time. The growth rate of the … …American Journal of Applied Sciences, Vol. 7, Issue 1 · 31 Jan 2010 · 8,095 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Use of Insects as Human Food in ZambiaA.E. GhalyProblem statement: The life cycle and culture structure of two commonly eaten worms in Zambia (Isoberlinia paniculata and Miombo/Mopani) were evaluated. The worms were grown on an artificial medium to evaluate the potential of producing them on a commercial scale. Approach: An interesting characteristic of the worms studied was that they reached their maximum weight and maximum length at the … …OnLine Journal of Biological Sciences, Vol. 9, Issue 4 · 31 Dec 2009 · 8,707 accessesView PDFCite
Research ArticleOpen accessIn the abstractShort-Run Employment Functions in Manufacturing IndustriesMd. Azizul Baten, Monsur Ahmed Chowdhury, Anton Abdulbasah Kamil, Rumana MomtazProblem statement: Increasing growth of population and shortage of producing capacity in Bangladesh have caused serious unemployment crisis and has forced the authorities to look for ways to reduce unemployment rate. Due to difference of structure and technology used in economic sectors and activities, the effects of factors on employment are different. So, for the purpose of findings alternatives to … …Journal of Social Sciences, Vol. 5, Issue 4 · 31 Dec 2009 · 7,446 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Black Cutworm as a Potential Human FoodA.E. GhalyProblem statement: The black cutworms (Agrotis ipsilon) were grown in an artificial medium to evaluate their potential as a human food. Approach: The culture was started from moths and the life cycle and culture structure were evaluated. There was an initial adjustment period of 3 days during which the growth of the larvae was very slow. The size of the … …American Journal of Biochemistry and Biotechnology, Vol. 5, Issue 4 · 31 Dec 2009 · 7,577 accessesView PDFCite
Research ArticleOpen accessIn the abstractExpecting the Unexpected Macroeconomic Volatility and Climate PolicyGajendra Singh ChauhanProblem statement: Analysts have been comparing a policy scenario with a baseline scenario of future economic conditions without the policy, to estimate the emissions reductions and costs of a climate policy. Both scenarios required assumptions about the future course of numerous factors such as population growth, technical change and non-climate policies like taxes. Approach: The purpose of this study was … …American Journal of Economics and Business Administration, Vol. 1, Issue 3 · 30 Sep 2009 · 7,496 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Simulation Model Estimates of the Intercropping Advantage of an Immature-Rubber, Banana and Pineapple SystemMohamadu Boyie Jalloh, Wan Sulaiman Wan Harun, Jamal Talib et al.Problem statement: Intercropping has been shown to have many advantages but it is fallacious to conclude it is always a better cropping system. Little is known about a new double-hedgerow intercropping of rubber, banana and pineapple in relation to its effects on growth and yield of the component crops when compared to their monocrops. Simulation modeling offers a cheaper and … …American Journal of Agricultural and Biological Sciences, Vol. 4, Issue 3 · 30 Sep 2009 · 9,005 accessesView PDFCite
Research ArticleOpen accessIn the abstractSolving Volterra's Population Model Using New Second Derivative Multistep MethodsK. Parand, G. HojjatiIn this study new second derivative multistep methods (denoted SDMM) are used to solve Volterra's model for population growth of a species within a closed system. This model is a nonlinear integro-differential where the integral term represents the effect of toxin. This model is first converted to a nonlinear ordinary differential equation and then the new SDMM, which has good … …American Journal of Applied Sciences, Vol. 5, Issue 8 · 31 Aug 2008 · 6,910 accessesView PDFCite
Research ArticleOpen accessIn the abstractNucleation and Crystal Growth Rates of Struvite in DTM Type Crystallizer with a Jet-Pump of Descending Suspension Flow in a Mixing ChamberJoanna Koralewska, Krzysztof Piotrowski, Boguslawa Wierzbowska, Andrzej MatyniaThe kinetic data concerning reaction-crystallization of struvite from diluted water solutions of Mg2+, NH4+ and PO43- ions in a continuous DTM-type liquid jet-pump crystallizer with internal circulation of suspension are presented and discussed. The measurements were performed with the assumption of minimal value of unit power of a jet-pump’s feeding stream, providing thus a minimal level of internal circulation intensity. … …American Journal of Agricultural and Biological Sciences, Vol. 2, Issue 4 · 31 Dec 2007 · 7,958 accessesView PDFCite
Research ArticleOpen accessIn the abstractComparison of Microbial and Heavy Metal Contents in Soils and Roots under Mangrove Forest Stands with Different Levels of Pollution in the Niger River Delta, NigeriaAroloye Ofo NumbereOil and gas exploration in the Niger Delta, has resulted to increased heavy metal contamination. It is thus postulated that increased heavy metal will lead to decreased microbial content in soil and root. To test this hypothesis ten replicates each of soil and root samples were collected from already established sites. Samples were sent to the laboratory for analyses of … …American Journal of Applied Sciences, Vol. 15, Issue 2 · 25 Jun 2017 · 8,181 accessesView PDFCite