نتایج جستجو برای: جریان غیرتشعشعی nr
تعداد نتایج: 46373 فیلتر نتایج به سال:
OBJECTIVE To evaluate, in simulated external root resorptions (ERR), two factors that may affect results of digital subtraction radiography (DSR): (1) intraobserver and interobserver reproducibility and (2) effects of digital file formats (TIFF, BMP and JPEG) on the estimation of mineral loss. METHODS Eleven incisors were radiographed three times (NR, no resorption; SR, small--#1/4 round bur;...
The notion of offering VoIP service over mobile networks is not new. The 3GPP has been discussing this topic for years, but has yet to define an actual implementation, in part due to a lack of suitable radio access technology. Interest in this technology generally falls into one of two main groups or drivers: • rapid growth in the number of VoIP users on the internet; and • desire on the part o...
In the early days, connecting devices with a computer involved many different connectors and the attachment of the devices had to be done before the host computer was powered on. The universal serial bus (USB) has replaced many of those old-fashioned connectors and provides a unified and universal connector with hot-plug support. The versatility of the USB makes it an indispensable way of conne...
DNA gyrase inhibitors, cyclothialidines B, C, D and E were isolated from four Streptomycete strains (NR 0659, NR 0660, NR 0661 and NR 0662). Their structures have been elucidated based on the amino acid analysis of the hydrolysates, NMR and HRFAB-MS experiments and shown to be cyclothialidine analogs. The absolute stereochemistry has been determined by the chiral HPLC analysis of the hydrolysat...
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