فهرست مطالب علیرضا حسیبی

In order to investigate the variation of some morphological, physiological and enzymatic characteristics of Zataria multiflora with the application of Humic acid and Fowlowic acid, as completely randomzed design with 7 treatments, 3 replicates and each replicate containing 3 units of plant, in total 63 units were evaluated. The treatments consisted of Humic acid and Fluvic acid with 3 levels of 25, 50 and 100 mg/L. Sparying the pots with the desired compounds were carried out three times in a week. Sampling and evaluation of the traits were carried out about two weeks after the last spraying. The evaluated traits included fresh and dry weight of shoot and root, total leaf chlorophyll, protein, superoxide dismutase enzyme activity, iron and nitrogen content. The results showed that Humic acid 100ppm treatment had the most effect on improving traits such as fresh weight of shoot and root, shoot and root dry weight, protein, superoxid dismutase enzyme activity and nitrogen content. Also Fluvic acid 100ppm treatment improvement of total leaf chlorophyll and iron content.

Today, the biggest challenge that threatens domestic and foreign citrus markets is the rising cost of production and the low unit yield. Therefore, any agronomic techniques that reduce pre-harvest losses and increase production can increase production efficiency and productivity of soil and water resources. This study was conducted to investigate the effect of foliar application of different polyamines (putrescine, spermine, spermidine) on the yield properties of sweet lemon fruit in a completely randomized design with six treatments including spermine (0.25 and 0.5 mM), putrescine (0.1 And 0.25 mM), spermidine (1 and 1.5 mM) and control. The results showed that the best polyamine for use in sweet lemons is putrescine 0.1 mM. The results also showed a significant and positive effect of this treatment on preharvest fruit loss. The results of the study recommend sweet lemon growers use polyamines to enhance yield.

Because of high urbanization rate and especially fast development of metro policy like Tehran, environmental pollution, like air, water, soil and visual pollutions have been increased. All of these factors have important effects on reducing of life quality and public urban spaces in these cities. In this research, the Park-e-Shahr as the first public park of the city of Tehran has been studied and the reasons were its environmental values, its functionality, culture and beauty. The principal of this research is to protect and reinforce the historical perspective of the park, qualitative elevation of the environment and the park's view with the minimum degree of damages to it and the protection of its historical values and also the fulfillment of the current emotional, mental, spiritual and the educational needs of the visitors and ultimately keeping the memory and the spirit of the place in designing the environment as such which remains in harmony with the location in the past and the present. Since this sphere is located in the old fiber of the city of Tehran (Sang-e-Laj district), the study has been done from a broader outlook. At the high level of the recognition of Tehran city and its location in the natural- historical situation, for the recognition of historical districts, at the intermediate scale of general recognition of Sang-e-Laj district in Tehran and historical identity since before, at the microscale of the recognition, all the current of the Park-e-Shahr in the current conditions have been analyzed. Analysis of natural and historical segments, analysis of the outlook and the view and analysis of behavioral patterns of visitors were done. Finally, the results showed that principles related to the techniques of revitalization and the preservation of the Park-e-Shahr. Utilization of questionnaires and SWOT method were done for the revitalization of Park-e Shahr.

In order to evaluate different application methods and rates effect of salicylic acid (SA) on yield and yield components of cumin (Cuminum cyminum L.), this study was done as a split plot based on randomized complete block design with four replication in Research Field of Agricultural collage, Karaj Branch, Islamic Azad University in 2011. Two application methods of salicylic acid (Spraying and mixed with irrigation water) were as main plot and three concentration of SA (0, 0.1, 0.7 and 1.5 Mm) were as sub plot. Measured traits comprised number of seed per umbel, number of umbel per plant, number of seed per plant, seed yield and weight of thousands seed. Result showed that spraying method of SA has better effect than other one. Some traits such as number of seed per umbel and number of seed per plant (P> 0/05) and seed yield and thousands seeds weight (P> 0/01) had significant effect in sprayed plant with SA. But number of umbel per plant has no different effect on application methods of SA. Also some traits such as number of seed per umbel and number of seed per plant in sprayed plant with SA increased (P> 0/05) in 0.7 Mm concentration. Wherever maximum seed yield was achieved in sprayed plant with 0.7 Mm concentration in amount of 1480.63 kg/ha and minimum seed yield was achieved in irrigated plant with 0.7 Mm concentration in amount of 1100.16 kg/ha.

Unfavorable conditions of cities, the shortage and the deficiencies of open and green spaces in large cities of the country require paying attention to parks and green spaces of the city. Ecological and social activities which are the foundations of the city's stability have elevated the quality and the livability of the cities, while being effective in its beautification in order to make the city's living environment more desirable. The elimination of the current deficiencies in these parks is often known as their restoration. In this research, the ParkShahr as the first public park of the city of Tehran has been studied because of its environmental values, its functionality, culture and beauty and the study was done on the basis of descriptive-analytic method. Thus, all the current physical, biological, social, cultural and functional specifications of the ParkShahr in the current conditions have been analyzed. Then the analysis of the outlook and the view as a pictorial-analytical method (Simon Bell) and the analysis of behavioral patterns of visitors by utilization of questionnaires have been done. Finally, the results showed that the principles related to the techniques of restoration and reclamation of ParkShahr will put emphasis on improvement of ecological and social quality. SWOT method was used for the restoration of ParkShahr.