Seismic Behavior Prediction of Flanged Unreinforced Masonry (FURM) Walls

In most available studies, unreinforced masonry (URM) walls are idealized as rectangular sections, while in reality walls have effective sectional shapes such as C, I, T, and L. In this article, the results of experimental and analytical assessment of flange effects on the behavior of I- and C-shaped URM walls are reported. Four clay brick walls at half scale were tested. Two specimens were designed with I- and C-shaped sections, and for comparison, two additional specimens were designed without flanges. The tests showed that under constant axial load the strength of the I-shaped wall increases, but that of the C-shaped wall decreases, because of out-of-plane distortion effects. Despite the loss of strength, both flanged walls indicated almost similar initial stiffness, deformation capacity, and mode of failure in comparison with walls without flanges. A mixed-mode analytical model is proposed to predict the lateral force displacement curve of flanged URM (FURM) walls. The proposed analytical model is based on section analysis of the walls and shows good agreement with previous experimental results.     

Sedimentation rates in the Lake Qattinah using 210Pb and 137Cs as geochronometer

The constant rate of supply (CRS) of excess ²¹⁰Pb model was successfully applied to assess ²¹⁰Pb data of two sediment cores from the lake Qattinah, Syria. Gamma spectrometry was used to determine ¹³⁷Cs and ²¹⁰Pb activity concentrations. The bottom of the cores was ²¹⁰Pb-dated to years 1907 and 1893. The accumulation rates were determined using ²¹⁰Pb method and found to vary similarly in both cores from 0.10 ± 0.01 to 3.78 ± 0.57 kg m^?2 y^?1 during the past century. ¹³⁷Cs was used as an in-dependent chronometer. The two distinct peaks observed on the ¹³⁷Cs record of both cores, corresponding to 1965 and 1986, have allowed a successful validation of the CRS model.     

Experimental Study on Postponing the Deboning of FRP Sheets in Masonry Walls

ABSTRACT

A large number of buildings all around the world are constructed of unreinforced masonry. These structures do not act well during earthquakes because of their vulnerable behavior. In last two decades, fiber-reinforced polymers (FRPs) has been used widely in seismic rehabilitation and strengthening unreinforced concrete and masonry structures. One important issue in using FRP composites for strengthening masonry walls is the inopportune debonding of composites from the wall surface; thus, in this article new methods are proposed to further delay the mentioned debonding issue. For this purpose, 13 masonry panels with 100x870x870 mm dimension are strengthened by using carbon and glass FRPs (CFRPs and GFRPs). A variety of strengthening methods such as surface preparation, boring, grooving, nailing, and plaster are used to mount FRP composites to the walls. For each specimen subjected to diagonal compression test, the loading level along with tensile and compressive diagonal displacements are evaluated. In order to assess the effect of FRP composites, four unreinforced masonry walls are tested as well. The results show 110% increase in ductility index of reinforced specimens compared to the unreinforced ones.     

Habermas and Iranian Intellectuals

In this paper, we discuss the impact of Jürgen Habermas' ideas on Iranian intellectuals who live in Iran. The upshot of the paper is that in present day Iran, where the society is going through a significant transitional period, various intellectual groups have reacted differently towards the ideas of the German philosopher-sociologist. While the orthodox left-wing (ex-Marxist) intellectuals and the conservative right-wing writers have, by and large, tended to ignore his views, a younger generation of the left-wing intellectuals and a number of the Muslim intellectuals with left-wing/socialist tendencies, have tried, each in their own ways, to ‘adopt’ Habermas' ideas in pursuit of their own projects/research programs.     

FARMERS,HERDERS OR TRADESMEN? ANALYSING SETTLEMENT PATTERNS OF THE MIDDLE AND LATE BRONZE AGE ON THE SARFIROUZABAD PLAIN,KERMANSHAH, WESTERN IRAN

The highland plains of western Iran have been investigated with varying intensity. The Sarfirouzabad Plain located in the south of Kermanshah province, although visited perfunctorily, has not previously been studied systematically, despite attractive ecological and environmental conditions. In 2009, a team from Tehran University conducted a systematic and intensive field survey in the region to identify Bronze Age settlements and to assess their location in relation to ecological, environmental and cultural factors that may have impacted their distribution on the plain. The surveyed area was walked in transects at 20‐metre intervals and resulted in the identification of 332 archaeological sites from different cultural periods, which added much to the limited knowledge about the history of this region. Twenty‐four of these settlement sites belong to the Middle and Late Bronze Age horizons. This study uses GIS to map the distribution of archaeological materials and construct spatial models to determine the significance of the distribution patterns of the Bronze Age sites.     

Government-Sponsored Iranian Medical Students Abroad (1811–1935)

The first Iranian to study medicine abroad was sent to Britain by the Iranian government in 1811, during the early decades of the Qajar period (1796–1925). The second student was sent to France in 1815, along with four other students. Another group of five students, including the third student of medicine, was sent to France in 1845. Forty-two others, including five medical students, were dispatched to France in 1858. Most members of the latter group were among the first graduates of Tehran Dar al-Fonun (House of Techniques) School. Then, in 1928, during Reza Shah Pahlavi's reign (1925–41), a special act was passed by the Iranian parliament (Majlis) according to which the Ministry of Education would send 100 students abroad annually for higher education at the government's expense. The practice was suspended in 1935 with the advent of the Second World War. Between 1928 and 1935, a total of 640 students, including 125 medical students, were sent abroad. The majority of the medical students (84 percent) were sent to France. Most of these medical graduates returned to Iran and in subsequent years played a significant role in further propagation of modern medical knowledge in the country. The paper presents a brief historical account of the conditions of public health and medical education between 1811 and 1935 as well as biographical sketches of some of the best-known or most influential medical figures among these graduates.     

The Cinderella complex – narrating Spanish women's history, the home and visions of equality: developing new margins

This paper examines the development of feminism in Spain within the context of political transformations. It focuses on one particular strand of feminist thinking: 'equality feminism'. The paper traces the evolution of equality feminism and its institutionalization, supported by the production and dissemination of a feminist history of the Franquista dictatorship (1936–1939). Yet, under scrutiny such narratives maintain a silence on the social, political and geographical diversity of women's experiences prior to, during and beyond the Franquista dictatorship. Drawing on women's oral testimonies (recorded in the city of Málaga, Andalucía) the paper animates the silences of this feminist history in Spain and the limits of state feminist ideology.