Abstract One of the present great challenges is finding nonprecious materials characterized by efficient electrocatalytic behavior in order to substitute the expensive platinum-based materials for the purpose of hydrogen evolution reactions (HERs).In this study, ZIF-67 and ZIF-67 were used as precursors in order to fabricate metallic-doped N-enrich
Al sabah and Al Zaman Journals Custom Shaped Wood Sign Attitudes Towards the Crisis between Turkey and kingdom of Saudi Arabia for the period (18 until 319)0mar chiad AIi Asst.Prof.Dr.University of Anbar College of Arts dept.of Media Abstract:The research tackles the crisis between Turkey and kingdom of Saudi Arabia after the absence of the
Abstract Background The South African legal framework requires mandatory parental/legal guardian consent for all research with children.Ethics guidelines provide some reprieve by allowing RECs to grant waivers of parental or guardianship consent in certain defined circumstances.In the first instance, consent may be provided by a proxy when parents
Thirty male subjects aged around 20-30 years old, with complete anterior teeth, no inter proximal caries and good general health conditions were selected by using simple random sampling.The anterior teeth were divided into 2 segments right side for 11, 12, 13 and left side for 21, 22, and 23.These two sites were treated by different way for compari