نتایج جستجو برای: epi retractable modules
تعداد نتایج: 67308 فیلتر نتایج به سال:
let $alpha$ be an endomorphism and $delta$ an $alpha$-derivationof a ring $r$. in this paper we study the relationship between an$r$-module $m_r$ and the general polynomial module $m[x]$ over theskew polynomial ring $r[x;alpha,delta]$. we introduce the notionsof skew-armendariz modules and skew quasi-armendariz modules whichare generalizations of $alpha$-armendariz modules and extend thecla...
BACKGROUND Patients with nonischemic left ventricular cardiomyopathy (LVCM) and ventricular tachycardia (Vt) have complex 3-dimensional substrate with variable involvement of the endocardium (ENDO) and epicardium (EPI). The purpose of this study was to determine whether ENDO unipolar (UNI) mapping with a larger electric field of view could identify EPI low bipolar (BIP) voltage regions in patie...
Objetivo: Evaluar los cambios refractivos y topográficos producidos por crosslinking EPI-ON (CXL EPI-ON) vs EPI-OFF EPI-OFF) en pacientes con queratocono. Introducción: Queratocono es una enfermedad bilateral progresiva, que puede causar discapacidad visual. La progresión de la tratada CXL, procedimiento fortalece córnea. Material métodos: Se revisaron retrospectivamente datos fueron tratados C...
The purpose of this paper is to introduce some new classes of rings and modules that are closely related to the classes of almost Dedekind domains and almost Dedekind modules. We introduce the concepts of $\phi$-almost Dedekind rings and $\Phi$-almost Dedekind modules and study some properties of this classes. In this paper we get some equivalent conditions for $\phi$-almost Dedekind rings and ...
BACKGROUND AND PURPOSE RS-EPI has been suggested as an alternative approach to EPI for high-resolution DWI with reduced distortions. To determine whether RS-EPI is a useful approach for routine clinical use, we implemented GRAPPA-accelerated RS-EPI DWI at our pediatric hospital and graded the images alongside standard accelerated (ASSET) EPI DWI used routinely for clinical studies. MATERIALS ...
In order to deliver public health services, epidemiologists and other public health professionals need low cost and easy-to-use computer software tools to manage data, perform data analysis, and map results. The software must function on laptop computers during field studies as well as in office environments. Epi Info' and Epi Map' are personal computer (PC) software programs developed since 19...
Let R be a commutative Noetherian ring. The k-torsionless modules are defined in [7] as a generalization of torsionless and reflexive modules, i.e., torsionless modules are 1-torsionless and reflexive modules are 2-torsionless. Some properties of torsionless, reflexive, and k-torsionless modules are investigated in this paper. It is proved that if M is an R-module such that G-dimR(M)
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