Attracting of Electrophile and resonating structures.pdf


























Comments

Post a Comment

Popular posts from this blog

OXIDE SUPPORTED METAL THIN FILM CATALYST.PDF

INTRODUCTION In recent years, metal nanoparticles and thin films supported on oxides have become fundamental components of many devices as their small dimensions present structures with new chemical and physical properties, often enhancing the reactivity of these surfaces relative to their bulk counterparts. Numerous theoretical and experimental studies show that the metal particle size and shape as well as direct adsorbate interactions with the oxide support can each play a key role in enhancing the reactivity of these surfaces.  Further investigations imply that the support material mayalso influence the metal’s intrinsic reactivity at these surfaces.  However, these studies were not able to isolate this effect from those of particle size, shape, and direct adsorbate-support interactions. It was not until recently that Chen and Goodman probed the influence of the oxide support material on the intrinsic properties at the metal surface. By covering a titania support with one o...
Read more

COVID-19 chem.com. Pdf

    Coronaviruse:- Coronaviruses are a group of enveloped viruses with no segmented, single-stranded, and positive-sense RNA genomes. Corona virus emerged in Wuhan, China, at the end of 2019. As in the start of 2020,   several cases  had  been  diagnosed  in  nine countries:  China,  Thailand,  Japan,  South  Korea, Singapore,  Vietnam,  Taiwan,  Nepal,  and  the  United States. Introduction : The novel coronavirus (2019-nCOV)or the severe acute respiratory syndrome corona virus 2(SARS_oV_2).On December 31, 2019, the China Health Authority alerted the World Health Organization (WHO) to several cases of pneumonia  in Wuhan City in Hubei Province in central China. The cases had been reported since December 8, 2019, and many patients worked at or lived around the local Huanan Seafood Wholesale Market although other early cases had no exposure to this market. On January 7, a novel corona...
Read more

Classroom as a good learning place.pdf

Classroom Culture: In a classroom culture the course instructor is the manager and the students can be considered as sub-ordinates. As the course instructor allots taks in the formof assigements and provid grades based on those, which can be considered as reward. There are mainly seven dimensions of organizational culture which are applied on the classroom. It involves creating an environment where students feel free and save to be involved. It’s a space where everyone should feel accepted and included in everything. Students should be comfortable with sharing how they feel, and teachers should be willing to take it in to help improve learning. When asking students to explore issues of personal and social identity , teachers must provide safe spaces where students are seen,valued,cared fro and repected. It is also important that students have opportunities to learn from one anothers varied experiences and perspectives. To create this learning enviroement ,teachers need to skillfully dr...
Read more