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hadamard (or complete $cat(0)$) spaces are complete, non-positive curvature, metric spaces. here, we prove a nonlinear ergodic theorem for continuous non-expansive semigroup in these spaces as well as a strong convergence theorem for the commutative case. our results extend the standard non-linear ergodic theorems for non-expansive maps on real hilbert spaces, to non-expansive maps on had...
the available shear correction factors have mainly been developed for homogeneous isotropic plates and/or assuming that no shear tractions are imposed on the top and bottom surfaces of the plate. in the present research, a more general case of a circular functionally graded plate subjected to non-uniform normal and shear tractions at the top and bottom surfaces is considered. these non-uniform ...
The rings considered in this article are commutative with identity $1neq 0$. By a proper ideal of a ring $R$, we mean an ideal $I$ of $R$ such that $Ineq R$. We say that a proper ideal $I$ of a ring $R$ is a maximal non-prime ideal if $I$ is not a prime ideal of $R$ but any proper ideal $A$ of $R$ with $ Isubseteq A$ and $Ineq A$ is a prime ideal. That is, among all the proper ideals of $R$,...
nineteen bread wheat genotypes were selected to examine the effect of glycine betaine (gb, 100 mm) on various photosynthetic gas exchange parameters under drought stress and to study the relationship of these parameters with non-enzymatic antioxidants. drought stress caused a significant decline in net co2 assimilation rate (pn), stomatal conductance (gs), intercellular co2 concentration (ci) a...
abstract background: the varieties of treatment methods for the scaphoid non::::union:::: have always been a discussable issue for orthopaedic surgeons. the current study, considered to be review for treatment results of the patients who sustained the scaphoid non::::union:::: with or without avascular necrosis and compared these two groups clinically and radiologically. methods: the clinical a...
primary musculoskeletal lymphoma presenting as monoarthritis is very rare. less than 20 cases have been reported. the ultrasound appearances have not been reported to date. we present a young female of primary knee lymphoma with synovial involvement presenting as monoarthritis. the ultrasound and mri features are discussed.
in this paper we propose a simple non-parametric model for multiple crite-ria supplier selection problem. the proposed model does not generate a zeroweight for a certain criterion and ranks the suppliers without solving the modeln times (one linear programming (lp) for each supplier) and therefore allowsthe manager to get faster results. the methodology is illustrated using anexample.
lymphomas are solid malignant tumors having a wide spectrum of clinical and pathological features. non-hodgkin’s lymphoma (nhl) is a subtype of lymphoma with two-thirds of the cases presenting as lymph node enlargement. the remaining one third of nhl cases has been reported in the extranodal sites, including the gastro intestinal tract, waldeyer’s ring, bone, skin, and brain. intraoral non-hodg...
non-convulsive status epilepticus (ncse) may present with several manifestations, many of which may not be obvious. the most important tool for the diagnosis of ncse is the electroencephalograph (eeg) pattern. this is a case report of a boy 9 years of age presenting with severe and continuous headache. he had received chemotherapy for histiocytosis, diagnosed at the age of 3.5 years. no evidenc...
conclusions an increasing frequency of ndo compared to onychomycosis due to other causative agents has been noticeable over the past few years in iran. this epidemiological data may be useful in the development of preventive and educational strategies. results based on only direct microscopy, onychomycosis was diagnosed in 424 (39.6%) cases, among which 35.8% were caused by dermatophytes, 32.7%...
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