نتایج جستجو برای: fatigue of rocks
تعداد نتایج: 21173575 فیلتر نتایج به سال:
The Soleimanieh ultramafic-mafic cumulate rocks (East of Sabzevar) include gabbronorites, amphibole gabbronorites, pegmatite gabbros, leucogabbronorites, norites, diorites and plagioclase bearing amphibole peridotites. The Cr-number of spinels in amphibole peridotites and olivine gabbronorites varies from 0.44 to 0.45 and 0.42 to 0.44 respectively. Geochemically, the gabbroic rocks are characte...
The Pliocene calc-alkaline volcanic rocks are exposed in two areas in southeast and northwest of Isfahan and consist of andesites and dacites. Based on geochemical data and multi- elements pattern, these rocks are medium to high calc-alkaline suite and they show LILE and LREE enriched normalized multi-element patterns, and negative Nb and Ti. Condrite-normalized REE patterns display a steep dec...
The study area is located in Central Iranian volcano-plutonic copper belt (Dehaj-Sarduiyeh belt) about 42 Km northeast of Shahrbabak in Kerman Province. Based on petrographic studies, extrusive rocks have the composition from trachyandesite, andesite basaltic and andesite to dacite with Eocene age. Mineralogically, the rocks contain plagioclase, amphibole, biotite and quartz. Chlorite, calcite,...
background: the role of nutrition in the progression of multiple sclerosis (ms) and related complications such as fatigue has been reported by several studies. the aim of this study is the assessment of nutritional status and its relationship with fatigue in multiple sclerosis patients. methods: this is a cross-sectional study, in which 101 relapsing-remitting ms patie...
abstract aim and background: multiple sclerosis is a chronic neurological disorder which is more prevalent in women than men. therefore, the aim of present study was to evaluate the relationship physical functioning impairment (as criterion variable) with fatigue, psychological symptoms and body mass index (as predictive variables) in the women suffering from this disease. methods and materials...
Eocene volcanic rocks in NE of Ordib, have a very good exposures near and along the Turkmeni-Ordib fault. These rocks, that are situated in the inner part of the Central Iran and margin of the Yazd block, comprise trachyte, trachy-andesite and basaltic trachy-andesite. Trachy-andesite is the pervasive rock unit. Rock forming minerals of these rocks are chloritized olivine, plagioclase, pyroxene...
generally, fatigue failure in an element happens at the notch on a surface where the stress level rises because of the stress concentration effect. the present paper investigates the effect of a notch on the fatigue life of the hsla100 (high strength low alloy) steel which is widely applicable in the marine industry. tensile test was conducted on specimens and mechanical properties were obtain...
Background & Aims: The prevalence of multiple sclerosis (MS) has been on the rise, especially among the youth in Iran. MS is more common in the individuals in their 20s and 40s, while women are also twice as likely to develop MS compared to men. Statistics suggest that there are 2.5 million MS patients worldwide, and this figure has been reported to be 15-30 cases per 100,000 in Iran. According...
Siliceous sedimentary rocks of Tertiary age were recovered at three of the nine sites drilled during Leg 31 (Table 1). Only relatively small amounts of lithified material were retrieved, but these rocks are particularly interesting because they include three distinct types of siliceous rock and because each type occurs with a distinct sediment lithology. The kinds of rocks sampled are (with lit...
In this paper we classify the range of feldspathic igneous rocks using five geochemical variables: the FeO/(FeOþMgO) ratio or Fe-index, the modified alkali^lime index, the aluminum-saturation index, the alkalinity index, and the feldspathoid silica-saturation index.The Fe-index distinguishes between melts that have undergone extensive iron enrichment during differentiation from those that have ...
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