STUDY DESIGN A double-blind, randomized, controlled trial. OBJECTIVE To determine the clinical effectiveness of therapeutic local anesthetic cervical medial branch blocks with or without steroid in managing chronic neck pain of facet joint origin. SUMMARY OF BACKGROUND DATA The prevalence of persistent neck pain, secondary to involvement of cervical facet or zygapophysial joints, has been d...

Recent improvements in mRNA display have enabled the selection of peptides that incorporate non-natural amino acids, thus expanding chemical diversity macrocycles beyond what is accessible nature. Such libraries incorporated acids at expense natural by reassigning their codons. Here we report an alternative approach to expanded amino-acid preserves all 19 (no methionine) and adds 6 resulting hi...

This article provides information on the current production in Karaganda branch of RSE «KazStandard» reference hardness blocks, brief state blocks world and research conducted at this institute while improving manufacturing technology. Hardness test are designed to reproduce metals according standardized scales, for example, [1], [2], [3], [4]. Reference made accordance with [5] from carbon all...