007137   Uygunoglu T;Unal O (Afyon Kocatepe Univ, Tech Educ Fac, Turkey, Email: uygunoglu@aku.edu.tr) : New approach to determination of compressive strength of fly ash concrete using fuzzy logic. J scient ind Res 2006, 65(11), 894-9.

Determination of effect of fly ash (FA) content on the compressive strength of concrete depending on water/cement ratio and concrete age was investigated by use of fuzzy logic (FL) approach. In the approach of modelling with FL, compressive strength values of various sample of concrete that produced by replacement of cement by F class of FA by ratio of 0 (control). 10%, 20% and 30% were used. Water/binder ratio of these concrete samples was varied between 0.27-0.60 in six different values. Experimental compressive strength values of the concrete specimens at 3, 7, 28, 90, 180 and 365 days compared with FL values obtained using the fuzzy sets. Optimum FA content and water/binder ratio for the best compressive strength for early age and hardened concrete can be obtained with FL.

7 illus, 4 tables, 18 ref

006077   Vijaykumar K C K;Srinivasan P S S;Dhandapani S (Dep of Mechanical Engng, Kongu Engng Coll, Perundurai, Erode-638 052, Email: vijikck@yahoo.com) : Transient thermal analysis of hollow clay tiled concrete roof for energy conservation and comfort. J scient ind Res 2006, 65(8), 670-4.

New concept of laying hollow clay tiles (HCT) over RCC instead of Weathering Course (WC). Transient heat transmission across roof structures for typical Indian climatic conditions has been studied. Energy savings with HCT roof is found to be 38-63% than conventional WC roof. When air is allowed to flow through the hollow passages, air flow is found to take care of all variations in the outside climate and solar radiation, thus providing almost uniform roof bottom surface temperature.

6 illus, 2 tables, 12 ref

023079   Aydin K (Civil Engineering Dep. Engineering Faculty, Erciyes Univ, 38039 Kayseri, Turkey, Email: kaydin@erciyes.edu.tr) : Evaluation of Turkish seismic code for mass irregular buildings. Indian J Engng Mater Sci 2007, 14(3), 220-34.

Several earthquake-prone countries including Turkey do not consider vertical mass discontinuity as a type of structural irregularity in their seismic codes. However, other earthquake prone countries clearly explain the mass irregularity and have limitations on the use of approximate methods to determine the earthquake forces developed in an irregular structure. The applicability of equivalent lateral force procedure of the Turkish earthquake code for mass irregular buildings is examined in this study. This is achieved by comparing the approximate results to those obtained by linear and non-linear time history analyses. 75 real and 100 simulated earthquake records are used in time history analyses. Two-dimensional 5, 10, and 20-story structures idealized as shear and frame buildings are studied. Mass irregularity is resulted from varying the mass of one floor and keeping the other story masses constant. Effect of altering the mass of different floors is also investigated. The comparison of the analysis results shows that the approximate method always overestimates the linear behaviour regardless of structure height, building rigidity and degree of mass irregularity. The method, however, underestimates the non-linear response of story columns. In light of the results obtained in this study, the inclusion of mass irregularity to the code appears appropriate.

7 illus, 6 tables, 13 ref

021132   Nasiruddin (Anthropology Dep, Faculty of Social Sciences, University of Chittagong-4331, Bangladesh, , Email: nuchoton@yahoo.com) : Study on the traditional housing technology of Bangladesh. Indian J Tradl Knowledge 2008, 7(3), 494-500.

Across history of human civilization, ecological factors motivated people of different periods in shaping their settlement strategy. From the very commencement of people's settlement-practice, housing practice became the symbol of protection and safety for human existence. Whenever people think of housing construction, ecological factors have been given the principal contemplation to cope with the hostile natural calamities and unusual environmental behaviour. People around the world still maintain and practice this trend historical, pragmatic and situational in housing construction. Indigenous people across the world have hereditarily been exercising this sort of housing technology for years that includes ecological and environmental reflection. However, even modern architectural design embodies the discourse of 'environmentally-sound' in construction process. With the increased economic dimension of human life, economic factors are also reflected in the domain of housing technology that includes cost-effectiveness and sustainability, etc. The paper explores one of such traditional housing technologies, mud-made housing technology bring widely practiced in different parts of Bangladesh. It explores the state and architecture, ecological and economic reasoning of the mud-made housing technology of Bangladesh.

005898   Shangari N K;Dave S G;Jain H K;Chhabra K L; Rajeev (NO, Central Building Research Institute, Roorkee-247 667) : Conscious effort for downsizing prefabrication for rural housing. Indian J Rural Technol 2006, 2(5), 224-8.

Housing, particularly the construction of safe, functional and durable dwelling units in rural and semi-urban locations of a vast country like India at an affordable cost still remains as an important concern of the society. The concept of large panel, box total segmental of prefabrication in housing is practice all over the western and technologically advanced world, in which building elements/components are fabricated in centralized factory set-ups and the on-site assembly is carried out through highly mechanized transportation and erection is neither feasible nor preferable in our present socio-economic scenario. A judiciously downscaled and downsized prefabrication ivz; partial prefabrication is a viable alternative to the prefabrication.

3 illus, 1 table

000974   Joshi M;Sawhney R L;Buddhi D (School of Energy and Environmental Studies, Faculty of Engineering Sci, Devi Ahilya University, Khandwa Road, Takshila Campus, Indore-452 017) : Mathematical models for estimation of daylight in buildings. SESI Jl 2006, 16(1), 45-67.

Presents a comprehensive review on mathematical models for estimating daylight in buildings, which is an art and science of harnessing the visible portion of the solar spectrum and its admittance into the built environment. Daylight is essential for sustenance of life on the earth and, therefore, it is important to understand the physics of daylight in order to quantify its availability through various systems and components that are used in modem architecture. Estimation of daylight is required in a number of engineering applications related to energy efficient designing of buildings. Maximising the use of daylight to supplement electric lighting in buildings offers enormous energy saving opportunities. Also gives a comprehensive review of various computer softwares being used for optimum prediction of the distribution of daylight in a habitat.

4 illus, 8 tables, 42 ref

000973   Jain R (Architecture Dep, Maulana Azad National Institute of Technology, Bhopal-462 007) : Thermal response of houses in mass housing projects. SESI Jl 2006, 16(1), 23-31.

One of the important aspects dealing with conservation of conventional energy in cities is the designing of energy efficient buildings that are able to extract light and heat energy from the nature. The dense urban setting, however, restricts access to sun and wind for a large number of buildings, even though these are abundantly available in nature. Availability of solar radiation and wind - chief components; of the climate - influences the level of comfort inside the buildings. So, gadgets working on conventional energy are empl6yed when climatic elements are not accessible due to inadequate open spaces around the buildings. In cities, open spaces around buildings may not be determined just by choice since spaces are regulated by the municipal byelaws, which regulate development rate and population density of the locality. Quite often, these lead to a form of development, which has least concern for the climate as well as availability of sun and wind to the buildings. Aims to present a discussion on urban settings under which buildings are located in an Indian city along with their thermal response to the available surroundings. It was observed, through conducting real study of urban houses placed in various circumstances, that theoretical assumptions of orientation and thermal gain phenomenon are not true when buildings are subjected to narrow street width as well as small side and rear open spaces in a dense urban locality.

9 illus, 6 ref

000974   Joshi M;Sawhney R L;Buddhi D (School of Energy and Environmental Studies, Faculty of Engineering Sci, Devi Ahilya University, Khandwa Road, Takshila Campus, Indore-452 017) : Mathematical models for estimation of daylight in buildings. SESI Jl 2006, 16(1), 45-67.

Presents a comprehensive review on mathematical models for estimating daylight in buildings, which is an art and science of harnessing the visible portion of the solar spectrum and its admittance into the built environment. Daylight is essential for sustenance of life on the earth and, therefore, it is important to understand the physics of daylight in order to quantify its availability through various systems and components that are used in modem architecture. Estimation of daylight is required in a number of engineering applications related to energy efficient designing of buildings. Maximising the use of daylight to supplement electric lighting in buildings offers enormous energy saving opportunities. Also gives a comprehensive review of various computer softwares being used for optimum prediction of the distribution of daylight in a habitat.

4 illus, 8 tables, 42 ref

000973   Jain R (Architecture Dep, Maulana Azad National Institute of Technology, Bhopal-462 007) : Thermal response of houses in mass housing projects. SESI Jl 2006, 16(1), 23-31.

One of the important aspects dealing with conservation of conventional energy in cities is the designing of energy efficient buildings that are able to extract light and heat energy from the nature. The dense urban setting, however, restricts access to sun and wind for a large number of buildings, even though these are abundantly available in nature. Availability of solar radiation and wind - chief components; of the climate - influences the level of comfort inside the buildings. So, gadgets working on conventional energy are empl6yed when climatic elements are not accessible due to inadequate open spaces around the buildings. In cities, open spaces around buildings may not be determined just by choice since spaces are regulated by the municipal byelaws, which regulate development rate and population density of the locality. Quite often, these lead to a form of development, which has least concern for the climate as well as availability of sun and wind to the buildings. Aims to present a discussion on urban settings under which buildings are located in an Indian city along with their thermal response to the available surroundings. It was observed, through conducting real study of urban houses placed in various circumstances, that theoretical assumptions of orientation and thermal gain phenomenon are not true when buildings are subjected to narrow street width as well as small side and rear open spaces in a dense urban locality.

9 illus, 6 ref

019225   Chandel D (Human Genetics Div, Zoology Dep, Gujarat Univ, Ahmedabad-380 009, Email: divya_chandel@yahoo.com) : Case of 18q-deletion with balanced translocation t(15;18)(p13;q21.3) in the mother. J Cell Tissue Res 2008, 8(1), 1281-4.

The 18q deletion syndrome can be caused by several terminal and interstitial deletions of which terminal deletions of the distal part of 18q are known as the De Grouchy syndrome. A female infant with distal 18_q deletion confirmed by G-banding is reported, who was referred for delayed development. Subsequent karyotyping in parents revealed that the deletion was inherited from the mother who carried a balanced reciprocal translocation between chromosome 15 and 18-46,XX,t(15;18)(pl3;q21.3).

^ccr2 illus, 10 ref

001001   Mathur R;Misra A K;Goel P (Central Road Research Institute, , New delhi-110 020, Email: rmathur.erri@nic.in ) : Influence of wollastonite on mechanical properties of concrete. J scient ind Res 2007, 66(12), 1029-34.

Studies were made on cement concrete and cement-fly ash concrete mixes incorporating wollastonite as partial substitute of cementitious material and sand respectively. Improvements in compressive (28-35%) and flexural strength (36-42%) at 28 and 56 davs respectively were observed by incorporation of wollastonite (10%) in concrete mixes. By incorporation of wollastonite, reduction in water absorption, drying-shrinkage and abrasion loss of concrete, and enhancement in durability against alternate freezing-thawing and sulphate attack were observed. Because of high concrete strength and abrasion resistance, a better utilization of concrete cross section is possible. Alternatively, thickness of pavement slab can be reduced by incorporation of wollastonite micro-fibres in concrete mixes.

4 illus, 10 ref