نتایج جستجو برای: dilation
تعداد نتایج: 15174 فیلتر نتایج به سال:
To evaluate the efficacy of nephrostomy balloon dilation (NBD) for patients who developed vesicourethral anastomotic stricture (VAS) following radical prostatectomy. NBD was performed in patients who developed VAS following radical prostatectomy. Quality of life (QoL), International Prostate Symptom Score (IPSS) and maximal urinary flow rate (Qmax) were evaluated. Four hundred and sixty-three p...
We establish dilation theorems for non-tight frames with additional structure, i.e., frames generated by unitary groups of operators and projective unitary representations. This generalizes previous dilation results for Parseval frames due to Han and Larson [6] and Gabardo and Han [5]. We also extend the dilation theorem for Parseval wavelets, due to Dutkay, Han, Picioroaga, and Sun [4], by ide...
Nitric oxide (NO) contributes to hypoxia-induced pial artery dilation, at least in part, via the formation of guanosine 3',5'-cyclic monophosphate (cGMP) and subsequent release of Met-enkephalin and Leu-enkephalin in the newborn pig. In separate studies, these opioids were also observed to elicit NO-dependent pial dilation. The present study was designed to investigate the role of the neuronal ...
A classical result in metric geometry asserts that any n-point metric admits a linear-size spanner of dilation O(log n) [PS89]. More generally, for any c > 1, any metric space admits a spanner of size O(n), and dilation at most c. This bound is tight assuming the well-known girth conjecture of Erdős [Erd63]. We show that for a metric induced by a set of n points in high-dimensional Euclidean sp...
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