نتایج جستجو برای: particularly as a step towards sustainable agriculture
تعداد نتایج: 14103122 فیلتر نتایج به سال:
conventional agriculture systems of production often lead to environmental degradation, economic problems and even social conflict. the efficacy of agriculture systems conducive to the economic, environmental and social sustainability of farming operations has been demonstrated, yet the adoption of sustainable agricultural practices is not widespread. this study evaluates the barriers of sustai...
The idea of a sustainable agriculture has gained prominence since the publication of the Brundtland Report in 1987. Yet, the concept of sustainable agriculture is very vague and ambiguous in its meaning, which renders its use and implementation extremely difficult. In this systematic review paper, we aim to advance understandings of sustainable agriculture from a social science and governance p...
The purpose of this study was to determine the perceptions of Iowa agricultural education teachers and students about sustainable agriculture. The teacher population for the study included all secondary school agricultural education teachers in Iowa (N=248). A stratified random sample of 60 teachers (schools) was selected, I O from each of the six FFA districts. Teachers in the sample were aske...
a phase-locked loop (pll) based frequency synthesizer is an important circuit that is used in many applications, especially in communication systems such as ethernet receivers, disk drive read/write channels, digital mobile receivers, high-speed memory interfaces, system clock recovery and wireless communication system. other than requiring good signal purity such as low phase noise and low spu...
in this thesis, we exploit a simple and suitable method for immobilization of copper(ii) complex of 4?-phenyl-terpyridine on activated multi-walled carbon nanotubes [amwcnts-o-cu(ii)-phtpy]. this nanostructure was characterized by various physico-chemical techniques. to ensure the efficiency and fidelity of copper species, the implementation of three-component strategies in click-chemistry all...
Presently the perception of sustainability has been dominant in field agriculture. Sustainable agriculture means economical by following practices which are eco-friendly. This results increasing attention stakeholders for monitoring as well evaluating being used It is realized that there many limitations to creating a commonly accepted term sustainable So opinions with reference realization In ...
‘Facilitating sustainable agriculture’ is an agricultural extension paradigm based on farming systems practice and the actor-oriented perspective on rural development. The challenge for agricultural extension is to facilitate a convergence of conflicting interests within a forum governed by the principle of communicative rationality. An initial stakeholder analysis is advised as a first step to...
fluorescence chemical sensors for the highly sensitive and selective determination of pb2+ , hg2+, co2+ and fe3+ ions in aqueous solutions are described. the ion sensing system was prepared by incorporating lipophilic ligand (l) as a neutral ion-selective fluoroionophore in the plasticized pvc membrane containing sodium tetraphenylborate or potasium tetrakis (p-chlorophenyl) borate as a liphoph...
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