نتایج جستجو برای: stone wales defect
تعداد نتایج: 137725 فیلتر نتایج به سال:
Abstract The Altar Stone at Stonehenge in Wiltshire, UK, is enigmatic that it differs markedly from the other bluestones. It a grey–green, micaceous sandstone and has been considered to be derived Old Red Sandstone sequences of South Wales. Previous studies, however, have based on presumed fragments (debitage) identified visually as coming Stone. Portable X-ray fluorescence (pXRF) analyses were...
PURPOSE The occurrence of brushite stones has increased during recent years. However, the pathogenic factors driving the development of brushite stones remain unclear. METHODS Twenty-eight brushite stone formers and 28 age-, sex- and BMI-matched healthy individuals were enrolled in this case-control study. Anthropometric, clinical, 24 h urinary parameters and dietary intake from 7-day weighed...
OBJECTIVES To evaluate patterns of laterality in cystine stone formation to determine whether phenotypic expression of this genetic disease is distributed equally in each kidney. Cystinuria is a genetic defect that may result in the formation of recurrent cystine calculi. Significant nongenetic factors may play a role in the manifestation of this disease. METHODS Thirty-four patients seen in ...
Abstract
The introduction of defects in graphene will affect the mechanical and electrical properties composite interface. We investigate effect Stone–Wales (S-W), single-vacancy (S-V), double-vacancy (D-V) on interface copper/graphene/copper (Cu/Gr/Cu) sandwich models using first-principles study. results indicate that most forming Cu/Gr/Cu have lower formation energy than free slab. is beneficial to e...
BACKGROUND AND OBJECTIVES Idiopathic hypercalciuria is a frequent defect in calcium kidney stone formers that is associated with high intestinal calcium absorption and osteopenia. Characteristics distinguishing hypercalciuric stone formers from hypercalciuric patients without kidney stone history (HNSFs) are unknown and were explored in our study. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS...
INTRODUCTION Herniation of the liver through an anterior abdominal wall hernia defect is rare. To the best of our knowledge, only three cases have been described in the literature. CASE PRESENTATION A 70-year-old Mexican woman presented with a one-week history of right upper quadrant abdominal pain, nausea, vomiting, and jaundice to our Department of General Surgery. Her medical history inclu...
introduction & objective: after urinary tract infection and prostatic disorders , the urine stones are the third common genitourinary diseases. demographic, environmental and genetic factors affect urine stone formation. the aim of our study is to survey epidemiologic factors in patients with urinary stones referring to educational hospitals of hamadan during 2010-2013. materials & methods...
Figure 1a. Contrast enhanced CT demonstrating a small calcified gallstone (arrow) within the gallbladder. 1b+c. Contrast enhanced CT two weeks later. b. A dilated gallbladder with thickened wall, absence of stone, and intrahepatic bile duct dilatation (arrow). 1c. The migrated gallstone (arrow) is seen in the distal CBD. 1d. ERCP demonstrating a filling defect in the distal CBD. 1e. The extract...
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