نتایج جستجو برای: pi 613514 18
تعداد نتایج: 393061 فیلتر نتایج به سال:
Background: The Roussouly classification, based on the functional parameter sacral slope (SS), describes normal sagittal balance in adults and has proved useful for surgery. Reference values children should be defined, since they are an important treatment target of conservative treatment. Moreover, during growth, there few correlations between parameters, we hypothesize that a new classificati...
Background: Sagittal imbalance is known as the main radiographic driver of disability in adult spinal deformity (ASD).In this study, the association of radiological spinopelvic parameters and clinical outcomes was evaluated following thecorrective surgery of sagittal imbalance, in order to explore the predictive ability of each parameter.Methods: A total of 23 patients, who underwent corrective...
موضوع پایداری در میکروشبکه ها همچون سیستم های قدرت سنّتی، مولفه مهمی برای مدیریت انرژی و برنامه ریزی می باشد. پایداری ولتاژ و فرکانس از مهمترین مواردی است که اخیراً در زمینه میکروشبکه ها مطالعه شده است. هدف از انجام این پایان نامه، طراحی و مدلسازی عناصر و کنترلرها و ارائه روش های جدیدی برای کنترل ولتاژ در یک میکروشبکه هیبرید ac/dc و در شرایط وقوع اغتشاشات مختلف می باشد. همچنین توانایی این روش ها ...
Using psi(2S)-->pi;{+}pi;{-}J/psi, J/psi-->gammaeta;{'} events acquired with the CLEO-c detector at the CESR e;{+}e;{-} collider, we make the first observations of the decays eta;{'}-->pi;{+}pi;{-}pi;{0} and eta;{'}-->pi;{+}pi;{-}e;{+}e;{-}, measuring absolute branching fractions (37_{-9};{+11}+/-4)x10;{-4} and (25_{-9};{+12}+/-5)x10;{-4}, respectively. For eta;{'}-->pi;{+}pi;{-}pi;{0}, this re...
BACKGROUND AND PURPOSE Combined echoplanar MRI diffusion-weighted imaging (DWI), perfusion imaging (PI), and magnetic resonance angiography (MRA) can be used to visualize acute brain ischemia and predict lesion evolution and functional outcome. The appearance of a larger lesion by PI than by DWI quantitatively defines a mismatch of potential clinical importance. Qualitative lesion variations ex...
This phase II/III, double-blind, randomized trial assessed the efficacy, immunogenicity and safety of the human papillomavirus (HPV)-16/18 AS04-adjuvanted vaccine in young Chinese women (ClinicalTrials.gov registration NCT00779766). Women aged 18-25 years from Jiangsu province were randomized (1:1) to receive HPV vaccine (n = 3,026) or Al(OH)3 control (n = 3,025) at months 0, 1 and 6. The prima...
R is called commuting regular ring (resp. semigroup) if for each x,y $in$ R there exists a $in$ R such that xy = yxayx. In this paper, we introduce the concept of commuting $pi$-regular rings (resp. semigroups) and study various properties of them.
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید