Archives-May 2015

Floristic studies are fundamental for the applied sciences such as rangeland management and conservation. Unique ecological and climatic conditions in the Tang Soulak Protected Area make it a remarkable habitat for the floristic studies. The purpose of this study was to determine floristic composition and their chorology carrying a central importance in vegetation description and analysis. Therefore, 50 quadrats (100 m2) were located according to the nature of vegetation. The species and their abundance-dominance were recorded. 70 plant species, belonging to 21 families, were identified. Plant classification, based on Raunkiaer’s life forms revealed Hemicryptophytes as the most abundant (46% of total) species. Therophytes, Phanerophytes and Chamaephytes contained 26, 12 and 4 percents of total plant species, respectively. Chorological characteristics of the plant species showed, about 66% of the total plant species in Tang Soulak area were belonged to the Irano-Turanian Chorotype.

This research was carried out from March 2014 to late August 2014 in Tang Soulak protected area in the Kohgiloye - Boyer Ahmad Province, I. R. Iran. The method used in this study was based on radius point counts. In the study area, 27 terrestrial bird species were identified. According to the “Margalef Index”, the most biodiversity richness was observed in May (3.12) and the least richness in March (2.92). According to “Menhink Index”, the most richness was seen in March (0.53) and the least in July and August (0.44).According to “Simpson Index”, the max. Biodiversity richness was in April (0.793) and the min. biodiversity was in March (0.699). According to“Shanon-viner Index” the max. Biodiversity richness was observed in April (3.396) and the min. biodiversity in March (2.892). According to “Simpson Index” the most uniformity was in April (0.193) and the least uniformity was in May and March (0.144). The diversity of species uniformity indices indicate a high habitat quality around “Tang Soulak protected area” area and status of good conditions for birds which should be considered in the management issues.

Constant Instantaneous Power Control technique for extracting reference currents for shunt active power filters has been assessed for 400Hz aircraft electric power system. Thereafter, its performance has been compared when optimized using fuzzy logic control. Critical analysis of Comparisons of the compensation ability of these two techniques based on THD and compensation time will be done and suggestions will be given for the selection of best technique to be used. The simulated results using MATLAB model are presented. That will prove the importance of the proposed control method of aircraft shunt SAF in aviation industry.

Currently the residential sector in India is growing more than 26% per annum. However the efficiency of construction sector in India is very low when compared to other countries. In order to assess the current situation of planning techniques used in residential project of India, a survey is carried out in the region of Pune city. The survey indicates that there is a vast difference in the planning techniques used by construction firms depending on their sizes. The small and medium size construction firms are reluctant in using the planning tools and the focus on planning in such companies is less.

Teaching grammar has always been an area of concern for the practitioners and EFL/ESL teachers. While it seems more commitment has been given to this task, yet there is still room for more attention to innovative methods of grammar instruction which can help learners practice grammar through working on a combination of meaning and form which makes grammar learning more meaningful. The idea of teaching grammar as "Dictogloss Method" comes from a paper by Ruth Wajnryb (1990) in which learners use their grammar resources to reconstruct a text and become aware of their shortcomings and needs through learning-based procedure in which noticing, hypothesis-testing and metatalk are involved. This research is an attempt to find out if teaching grammar through Dictogloss method will significantly help Iranian EFL learners develop their grammatical competence. This study was based on a quasi-experimental research strategy with a pre-test post-test control group design. Eighty intermediate EFL students studying English at Sana'ato Ma'adan Language Institute (Isfahan) with the age range of 16-18, participated in this study. The performance of the learners who were exposed to Dictogloss method in the experimental group was compared with that of control group which did not undergo such a procedure. The analysis of the data indicated that utilizing Dictogloss method in experimental group helped the participants improve their grammatical competence upon verb tense usages significantly. In addition, the results suggested that Dictogloss can provide learners with opportunities to use their productive grammar in the task of text creation and meaningful communication.

A selective method for the fast determination of trace amounts of Pb (II)ions in water samples has been developed. method has been developed for preconcentration of Pb on organic-solution-processable functionalized-nano graphene (SPFGraphene) adsorben in the pH range 5.0–10.0, prior to its spectrophotometric determination, based on the oxidation of bromopyrogallol red at ? = 517 nm. This method makes it possible to quantitize Pb in the range of 4.2×10?9 to 2.3×10?5 M, with a detection limit (S/N = 3) of 1.42×10?9 M. This procedure has been successfully applied to determine the ultra trace levels of Pb in the environmental samples, free from the interference of some diverse ions. The precision, expressed as relative standard deviation of three measurements is better than 3.0%.

Sediment and fish (nile Tilapia, Oreochromis niloticus) were collected from six sites of Lake Hawassa namely; Tikur Wuha, Amora Gedel, Dorie Bafana, Central part of the lake, the opposite side of Amora Gedel and Referral Hospital sites. Concentration of heavy metals was analyzed quantitatively using Flame Atomic Absorption Spectrophotometer and Chemometric methods. The maximum and minimum mean levels (mg/kg dry mass) in different lake sediment sites were Cu (51.38-17.64), Mn (348.51-140.63), Cd (12.8764-403), Pb (30.05-6.72), Ni (26.73-8.43 ), Zn (367.84-147.49), Cr (14.15-5.34), Co (27.19-9.59 ), Mg (3859.86-1872.43), Na (4913.72-2903.043), Ca (5526.74 - 3608.71), K (4229.69-2255.57) and that of fish muscle were Cu (13.833-5.666), Mn (11.972-9.722), Zn (21.110-12.055), Ca (574-482), Mg (512-437), Na (771-681), K (903-785). The result shows that the metal concentration in sediment samples is in order of Ca > Na > K > Mg > Zn > Mn > Cu > Pb > Co > Ni > Cr > Cd. The detectable metals in Tilapia fish muscle were in order of K > Na > Ca > Mg > Zn > Mn > Cu. In all the samples, concentrations of metals in sediment samples were higher than those of fish samples.

Now a days divorce is the most important threat to the family institution and understanding its influencing factors is one of the priorities of mental health. The aim of this study is to investigate the efficacy of training the cognitive –behavioral techniques of the marriage performance of couple son the verge of divorce. This study used aquasi-experimental design with pretest, post-test, and control group. The subjects of this study consisted of 15 clients as the experimental group and 15 patients as the control group which were selected with multi-stage random sampling from the counseling center of Social Welfare Organizaion and Family Court center of Neyshaboor. The experimental group was trained for 8 sessions about the cognitive - behavioral techniques. The results showed training cognitive-behavioral techniques improves the marriage performance using analysis of covariance and independent t-test. Furthermore, in terms of the effectiveness of cognitive - behavioral techniques there was a significant difference between the two sexes.

In this paper we synthesis various thickness of nickel oxide (NiO) nanostructure films deposited on si substrate. by using RF. Reactive magnetron sputtering technique rotating by 5 cycle/min with both Argon and Oxygen mixture gases .argon and oxygen partial pressure was(7.0×10-3torr)and(1.89×10-2torr) respectively. The gas sensing application and electrical properties investigated as a function to the thickness variation the dramatic change in the electrical properties shows strong dependence on the thickness variation. Conductivity, resistivity, gas sensitivity of hydrogen and nitrogen dioxide gases was (95 %) and (90 %) for 50 nm respectively, gas sensitivity for NiO films increasing as film thickness increasing.

The use of sumac plant extract as corrosion inhibitor for ?-brass in nitric acid solution was investigated using weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and electrochemical frequency modulation (EFM) measurements. It was found that sumac extract behaves as inhibitor. The inhibition efficiency increases with increasing sumac concentration, but decreases with raising the temperature. The adsorption of sumac on the ?-brass surface follows Langmuir's adsorption isotherm. The effect of the temperature on the corrosion rate of ?-brass in 1M nitric acid was studied. Potentiodynamic polarization studies showed that sumac extract is mixed type inhibitor and the results obtained from different techniques are in good agreement.