Background and Purpose: In our country the generation of youth includes the most percentage of the whole population. The education of environment can help fostering of environmental culture and attainment to sustainable development purposes. It is clear that acquaintance of youth with environmental basic science in the education of different degrees can foster compatibility, mentality and conversation of natural conservation and creasing of sense of responsibility in young population. The aim of this essay is to survey of students’ views of secondary curriculum around environment Conservation in Meshkinshar County. Methodology: This survey is functional type and its analytical-explanatory. The population of this study is over 16 students who were selected by multistage random sampling, and the tool is researcher's questionnaire. Formal validity of questionnaire was proven by expert panels. A survey with the same population with 30 questionnaires was held and a finding by the use of Cronbach alpha formula in the SPSS software obtained stability was 0. 85. Findings: For attaining the sustainable development namely harmonious development and with protecting environmental values and natural dynamics must think of the evolution of society’ s subsistence culture until society accord their character with sustainability and nature dynamics. Hence, outbreak of environmental crisis and devastation and decomposition of natural sources with promoting of population have been caused that current human attempt to prevent their environment devastation. Discussion and resulting: The findings showed that expert from variable orientation for creating of environmental complexes, rate of visit from parks and green spaces, using from educational films regarding environment, between all variables ( rate of environmental educational material on the reading book, attitude regarding environmental conservation, rate of environmental interests, rate of schools books, rate of use from environmental journals and publication, information technology of teachers regarding environment) had positive and significant correlation with students’ views regarding environment conservation. Finally, it is presented based on findings of practical research suggestions.

Background and Objective: Environmental pollution and dependency on fossil fuels are the most important incentives for the development of biofuels in Iran. Microalgae are introduced as one of the best raw materials for the production of biofuels in the world. In addition, for the production of microalgae, the emissions from power plants are used which leads to the reduction of greenhouse gas emissions to the atmosphere. Method: This paper proposes a microalgae-based biofuel supply chain network design model to study the development of such fuels. First, a deterministic model was developed to model the all activities of the supply chain including provision of raw materials for the production of microalgae, microalgae cultivation, turning them into biofuel and eventually biofuel distribution. Then, the deterministic model was extended to a robust network design model to achieve a safe and stable supply chain decisions in the face of uncertainty. Findings: Results of using the proposed model for the development of microalgal biofuel production show that the cost biofuel production from microalgae is 88. 5 thousand Rials per liter. Discussion and Conclusion: Current production cost of microalgae-based biofuel cannot compete with that of fossil fuel, but the cost can be significantly decreased with a slight increase in algae productivity or oil content in future.

Background and Objective: Azolla plants with the capability of fixing nitrogen, potassium and phosphorus, which are used as green manure and the nutrients in the compost, can be considered as a source of nutrition for plants. This study was designed to investigate the combined effects of Azolla with organic and inorganic fertilizers on soil NPK levels on study the growth index of Populous Deltoids. Method: The Azolla were collected from ponds of Joibar city located in Mazandaran province. Azolla compost was used in combination with inorganic and organic materials and the amount of NPK in these compounds and its effects on growth parameters (height, stem diameter and leaf fresh weight) were investigated. The compost of Azolla 100% and straw 100% had the highest and the lowest NPK that resulted in significant increases in growth indices of Populus deltoides in comparison with control one. Findings: Growth Indices in the compost of Azolla 100% showed the significant increase in comparison to other fertilizer treatments (different percentages of Azolla, straw and urea). Also, the mixed manure of Azolla and organic compost (Azolla 50%+ straw 50%) (With 0. 32% nitrogen, 0. 02% phosphorus and 0. 24% K) with inorganic fertilizer of urea was significantly increased growth parameters of plant than control. Discussion and Conclusion: According to the results, compound fertilizer 50% Azolla +50% straw + urea and Azolla 100% compost were had the greatest impact on improving the soil and finaly, plants growth. Therefore, use of green manure and green manure combined with a combination of organic and inorganic fertilizers, according to the effects on soil chemical traits, resulted in fertility improvement and increase of crop and by reducing the use of chemical fertilizer in agriculture will prevent environmental pollution and its staggering costs and contribute to the sustainable development of agriculture.