Coronavirus diseases-2019 (COVID-19) pandemic emerged in late 2019 and many countries initially adopted partial or complete lockdown measures to restrict the transmission of disease, as effective drugs vaccines were unavailable till then. Imposing drastically reduced anthropogenic commercial activity. All types large small industries markets closed; all sorts public transportation, except for e...

the aim of this paper is to study semigroups possessing $e$-regular elements, where an element $a$ of a semigroup $s$ is {em $e$-regular} if $a$ has an inverse $a^circ$ such that $aa^circ,a^circ a$ lie in $ esubseteq e(s)$. where $s$ possesses `enough' (in a precisely defined way) $e$-regular elements, analogues of green's lemmas and even of green's theorem hold, where green&apos...

admittedly, one of the problems facing the high school education system in iran is that students do not show interest in arabic and obtain very low marks. this is specially important because arabic is the key to understanding religious texts and our literary and scientific heritage. a study of 400 high school students from various education districts in the city of mashhad, using a cluster samp...

the aim of this paper is to study semigroups possessing $e$-regular elements, where an element $a$ of a semigroup $s$ is {em $e$-regular} if $a$ has an inverse $a^circ$ such that $aa^circ,a^circ a$ lie in $ esubseteq e(s)$. where $s$ possesses `enough' (in a precisely defined way) $e$-regular elements, analogues of green's lemmas and even of green's theorem hold, where green's relations $mbox{$...

Lencucha and Thow’s paper offers an important addition and corrective to the burgeoning body of work in public health on the ‘commercial determinants of health’ in the context of non-communicable diseases (NCDs). Rather than tracing the origins of incoherence across policy sectors to the nefarious actions of industry, they argue that we need to be better attuned to the ...