نتایج جستجو برای: surface soil shear strength

تعداد نتایج: 1034220  

Seyed Vahid Mojtahed Sistani Soheil Ghareh,

Nowadays, soil reinforcement using polymer elements have been investigated by a number of researchers in order to increase the load capacity of soils. Reinforcing soils using fibers is a method of soil improvement, which offers a homogenous mixture in combination with soils, regarding their tensile strength. This combination maintains pressure loading capacity and properties in mutual resistant...

Journal: :فیزیک زمین و فضا 0
احمد ادیب دانشیار، گروه مهندسی نفت، دانشکده فنی، دانشگاه آزاد اسلامی واحد تهران جنوب، تهران، ایران

summary based on the results of the analysis of site effects, mostly those with shear wave velocity and the fundamental period chosen as the basis for classification. in revision of earthquake resistant design regulations for buildings, classification of lands should be subject to the field conditions, geological, geotechnical, geophysical, and laboratory tests.in this context, the average shea...

2013
T Mohammad Shariful Islam Shamima Nasrin Shahidul Islam Farzana Rahman Moury

Protection of slope and embankment from erosion has become an important issue in Bangladesh. The constructions of strong structures require large capital, integrated designing, high maintenance cost. Strong structure methods have negative impact on the environment and sometimes not function for the design period. Plantation of vetiver system along the slopes is an alternative solution. Vetiver ...

Journal: :journal of dentistry, tehran university of medical sciences 0
m h hosseini assisstant professor, department of orthodontic, school of dentistry, tehran university of medical science, tehran, iran. f namvar j chalipa k saber n chiniforush s sarmadi

the purpose of this study was to compare shear bond strength (sbs) of orthodontic brackets bonded to enamel prepared by er:yag laser with two different powers and conventional acid-etching.forty-five human premolars extracted for orthodontic purposes were randomly assigned to three groups based on conditioning method: group 1- conventional etching with 37% phosphoric acid; group 2- irradiation ...

2014
R. Chitra Manish Gupta

Over the last few years or so, the use of artificial neural networks (ANNs) has increased in many areas of engineering. In particular, ANNs have been applied to many geotechnical engineering problems such as to predict pile capacity, settlement, liquefaction etc. The correlations between shear strength parameters and other soil properties individually are common among Geotechnical engineers. Bu...

2013

This brief article elaborates on some clearly unlikely predictions made some four decades ago by R. Dobry within the context of his doctoral dissertation, which concern the resonant frequencies of soil strata whose stiffness starts at zero at ground level and then increases continuously as some power of the depth. Although the problem was eventually traced to subtle changes in the boundary cond...

Journal: :journal of lasers in medical sciences 0
merve çakirbay taniş dental practitioner, ankara,turkey turgut cihan akçaboy department of prosthodontics, faculty of dentistry, gazi university, ankara, turkey

introduction: resin cements are generally preferred for cementation of zirconia ceramics. resin bonding of zirconia ceramics cannot be done with the same methods of traditional ceramics because zirconia is a silica-free material. in recent years, many methods have been reported in the literature to provide the resin bonding of zirconia ceramics. the purpose of this in vitro study is to evaluate...

2005
Stephen G. Wright

15. Supplementary Notes Project performed in cooperation with the Texas Department of Transportation and the Federal Highway Administration; Project Title: Implementation of Research Results Regarding Shear Strength and Stability of Embankments 16. Abstract A number of TxDOT-sponsored studies and research projects have been conducted over the years regarding shear strength and slope stability i...

Journal: :galen medical journal 0
ali nozari department of pediatric dentistry, dental school, shiraz university of medical sciences, shiraz, iran ali heidari student research committee, dental school, shiraz university of medical sciences, shiraz, iran ebrahim azimi student research committee, dental school, shiraz university of medical sciences, shiraz, iran azade rafiee department of pediatric dentistry, dental school, shiraz university of medical sciences, shiraz, iran

background: esthetic demands among patients have led to the introduction of tooth-colored restorations. composite resins bond to enamel applying acid etch technique. total etch adhesion systems are still considered as golden standard among bonding systems. however, clinicians have tendency towards using adhesive systems with a simplified application procedure. the aim of the present study is to...

Journal: :dental research journal 0
niloofar shadman shahram farzin ebrahimi maryam azizi shoul hasti sattari

background: casein phosphopeptide-amorphous calcium phosphate (cpp-acp) is applied for remineralization of early caries lesions or tooth sensitivity conditions and may affect subsequent resin bonding. this in vitro study investigated the effect of cpp-acp on the shear bond strength of dental adhesives to enamel. materials and methods: sixty extracted human molar teeth were selected and randomly...

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