Considering the importance of Sesquiplane wind turbines in generating electricity, a study of their efficiency has been considered. In this study, we examined the structure and characteristics of blades, and determining the angle of deposition and wind speed to improve its performance with the help of CFD analysis in order to optimize the production of electricity. Using CFD analysis, in this paper, a method Fast and accurate calculations for constant Permanent AOA are proposed based on the flow rate field data at two upstream reference points of the turbine blades. The new method can be used to compute and store AOA data during CFD simulations without the need for wide processing to analyze and optimize the aerodynamic efficiency of the turbine. Several reference and reference reference reference points were used to select the most suitable locations for two reference points for the AOA calculation, and it has been determined that by using flow data from two reference points in 0.5 atmospheres, the length of the chord upstream and the air far from each The HF can provide the most accurate assessment in a wide range of tested AOAs. Based on the proposed AOA estimation method, the performance of a fixed ground and VAWT variables of varying sinusoidal variables are compared. The analysis shows how the configuration of the sinusoidal rod can improve the overall turbine performance by maintaining more favorable AOAs, and increasing and distributing them.

This article is based on a study that aimed to analyse activities, perceptions and aspirations of a set of individual and institutional players. These players are identified as potentially relevant in the creation and management of a protected area, in order to enable social diagnosis and understand how implementing a protected space can contribute to local development and to what extent it is possible to involve and mobilize local players. For this purpose, Veiga de São Simão, located on the Lima estuary in Viana do Castelo (Portugal), was selected as a case study. This study shows that the creation of protected areas cannot be done in an isolated and punctual manner, being its insertion necessary in development policies which are susceptible to providing populations with governability conditions and means, when seeking a sustainable development.

Leaf hoppers are important pests of crops including cotton. This research was carried out during 2014- 2015 to identify the main leaf hopper species collected in the cotton fields of Golestan province and to study population of cotton green leafhoppers dominant ones. The specimen were collected and brought to the laboratory. The results revealed that following the species had the highest population in cotton fields:1- Asymmetrasca decedens (Paoli,1932). 2- Psammotettix alienus (Dahlbom, 1851).3- Emposca decipiens (Paoli, 1930). 4- Jacobiasca lybica (Bergevin & Zanon, 1922). A. decedens was determined as dominant species. The peak of activity this insect was late in June to late in August in the cotton feilds. The biological characteristics of A. decedens were stuied in the laboratory condition (24 ±1 °C. and 75 ± 5 % R.H) 25 – 35 days with egg incubation period of 7 – 9 days and nymphal duration of 10 – 15 days. The longevity of adults was 8- 11 days. This pest had 5-6 generation per year and over wintered as adult under weeds. The main important cultivated host plants of this pest are cotton, potato, faba bean, rapeseed, soybean and cucurbit and its wild hosts are black night shade, pigweed, mallow and goose weeds.

Cotton bollworm, Helicoverpa armigera (Lep. Noctouidae) is one of the key pests in cotton fields in Golestan province. In some areas the feeding of buds, floweres, bolls of cotton and cotton products will be reduced slightly. In this survey a new insecticide product Lufenorun were tested on cotton bollworm and important natural enemies, chrysopids in the field of cotton in Golestan province during 2015-2016. Eight treatments with four replications were tested at a complete randomized block design in Gorgan. Sampling was done before and 3, 7, 14 and 21 days after spraying. According to the results of the test toxin, lufenorun 1.5 liter treatment after 7 to 14 days 81.75 and 86.75 percent more with the greatest impact on cotton bollworm common pesticides used to good effect had. The impact on important natural enemies such as green lacewing (Chrysopa formosa ) to control showed no effect. This is necessary because conventional pesticides bollworm stretch in the province for many years taken in order to avoid the possible resistance of the pest in the future can be accommodated.