Southern areas of Bafgh are located in central arid areas of Iran, with little amounts of precipitation and vegetation cover. Blowing of strong wind over these bare areas causes wind erosion and destroys soils texture, which result in rail roads damage specially Tehran-Bandar Abbas in southern Bafgh and also in damage to farmlands and neighboring villages. By accumulation of moving sands in southwest Bafgh, an erg of 37 km2 areas was made. In order to control wind erosion in these areas, source of aeolian deposits were determined using stepwise determination method. Investigations showed that erosive wind blew from southwest and transported aeolian sands, depositing them on sand dune areas. Geomorphological studies and mineralogy showed that source of sand dunes were local and near them, including some part of pediment in southwest of erg, Zarand Shoor dry river, and wind erosion facies in these areas. Generally, the main source of aeolian deposits extended from sand dune areas to Zarand Shoor dry river, and secondary source sandy desert nearby.

The louse as an external bloodthirsty parasite of human beings has been known since long ago, however, its function as the carrier of some of the diseases such as Typhus relapsing fever and other fevers has been seriously considered just around the late 20 century .Although louse contamination can be observed among all age groups, it is more prevalent among children, especially those in primary school. In this cross- sectional study the main goal is to investigate prevalence and the reasons of the origination of this head louse contamination among the primary students in Bandar Abbas during the years 99 till 2000 .In this study 3249 students of both sexes selected by random sampling mutiplestage . Data was gathered by means of questionnaires and hair examination among 3249 students of both sexes by means of questionnaires and hair examinations. The result showed that 12.27% of the populations were contaminated by the louse and the average amount of louse contamination among girls and boys was 20.29 and 1.77 percent respectively. There was a meaningful relationship between louse contamination and the number of family members the level of parent education, parent job, sex, age, length of hair, ( P = 0.000 ) . But there was no meaningful relationship between the louse contamination and lack of bathing facilities at home and having school health nurse or not having school health nurse. Considering the prevalence of infection among the female, it is suggested that the parent and teachers should receive training about the danger of infection and its spread in family and school for preventing the spread of infection and also for reducing the costs of its treatment.

To study the geomorphological facies of Lut Desert, especially Yardangs which are prominent and rare features in the world, 6 reflective Landsat satellite thematic mapper bands dated 1367 and 1368 as well as colour composites dated 1368 (TM7=red, TM4=green, TM2=blue) were empolyed. In the study some additional information, such as topographic maps (1:50000), ILWIS and ER mapper softewares were also used for Image processing. To enhance the Images, stretching and filtering techniques were applied to study the features as well as land cover types and photomorphic units. Based on the obtained data, 14 different units were distinguished of which five are related to Yardang. The obtained results also have shown the capability of Landsat satellite images in delineation of Desert geomorphological facies. During the study, major characteristics of geomorphologic facies were also identified and mapped.

As the result of gully invention and development in study area,more amount of susceptible soil for cultivation,delivering on slopes into drainage density. Because for this reason,research and study on invention and development of gullies in study area, are very very important. The role of morphogenic and topographic factors, taking into acount in the research of cause and factors of gulling. The gradient, length and shape of slopes ,relative relief-as the most important topographical factors influence on run off and increase or decrease power of erosive force of run off ,playing the most important role. In this article have been analysed the role of topographical factors on regression head of gullies by used of quantitive methods. The results of this analysises show that,the shere of slops lengthen on development of head gullies in study area is more than other topographical factors.So that as ,if slop of length increase and hold constant other factors, potential of soil erosion on slopes will increase to,equal 2.5 times

The massive conversion of Turkish tribes to Islam in 4thHQ (Hijri)/10th A. D. brought about immigration and institution of numerous Turkish tribes in the Islamic world. Consequently, establishing Turkish governments such as Ghaznavid and Saljooghis, and their backing of the Caliphate's center, set off the new movement of aggression in the Islamic world. This was however made by the Turkish warriors after a long cessation of battle in the Islamic world. The increase of tribal immigrations and little equipments made the Saljooghi's rulers in order to make living for their tribes to move to the Byzantine's territory in the east of Anatolia. Consequently, Byzantine's kingdom recruited a large army to face the new Moslem attacks. This crucial battle occurred in a place called Malazgerd in 464 Hijri/1071 A. D. Due to their strong faith and unity, the Saljooghi's armies, despite their small number of army, could conquer the great Byzantine's army. This conquest caused the Turks to expand their territory and to gradually occupy Anatolia. Therefore in order to gain political and religious power to prevent this sort of attacks, the Christian world attempted to convert all European residents Christianity. This was however due to the fact that these tribes were recently united and could be dispersed quickly in the risk of population boom and lack of resources. As a result, they sought out the excuse of the Moslems' occupation of sacred Christian places and commenced the Crusades.