The aim of the experiment is determination of a mount of bismuth in Pepto-Bismol antacid tablets using Atomic Absorption Spectrometer instrument (AAS) and inductively coupled plasma-optical emission spectroscopy (ICP-OES) instrument. As well as to see the interpretation of the resultant data from the instruments programs using curves and correct calculations.   IntroductionBismuth one of the most …

The Introduction Bismuth one of the most importantRead More »

Why methionine as the initiating amino acid?Production of methioninein the supposed prebiotic chemistry conditions, present no particularchallenges (Kim andBenner, 2018) . Methionine could be initially incorporated into the primordialRNA-dependent world as a cofactor because, among others, of its involvement inmethyltransferase activities although spontaneous emergence of S-Adenosylmethioninein the RNA world is very conceivable (Laurino and Tawfik, …

Why preferentially interacts with its codon AUG (Mellersh,Read More »

 MohamadFauzi Ahmad1,4, Faridah Sonsudin2,Rosiyah Yahya1, MardianaSaid3, Norliza Baharom4, Adlan Akram Mohamad Mazuki4,Osman Zakaria41Chemistry Department, Faculty of Science2Centre for Foundation Studies in Science3 Infra Analysis Laboratory, IPPPUniversity of Malaya, 50603, Kuala Lumpur,Malaysia.4Chemical Group, National Metrology Institute ofMalaysia (NMIM), Lot PT4803, Bandar Baru Salak Tinggi, 43900, Sepang, Selangor Corresponding author:  [email protected]:Multiwall Carbon Nanotubes (MWCNTs), Inductively Coupled Plasma MassSpectrometry (ICP-MS), …

Mohamad elektron penghantaran (TEM) digunakan untuk menganalisa perubahanRead More »

In the last few years, the invention ofa new group of mesoporous silicate or aluminosilicate molecular sieves whichwas called M41S has received much attention in some areas of nanotechnology, chemical,engineering and physical sciences. M41S are broadly classified into four maincategories including ordered hexagonal pore structure of MCM-41, cubic pore structure of MCM-48, lamellar of MCM-50and …

In for scientists because it provides a lotRead More »

 “C60 behaves chemically like an electrondeficient alkene, since it has sp2carbon atoms but tends to avoid double bonds in the pentagonal rings, whichcauses poor electron delocalisation throughout the molecule” (Unwin, 2018) 3. Thismeans that C60 behaves chemically like an electron deficient alkeneand so readily takes place in addition reactions; like the addition of theO-Os-O unit across …

“C60 behaves chemically like an electron deficient alkene,Read More »

Teachers should be absolute experts in their field and exemplary influences to their students before attempting to teach in a school. Excellent teachers are certainly important, as they are the ones who have knowledge about their topic and it is their responsibility to impart it on the students, as well as to motivate and inspire. …

Is it the teachers or good facilities that lead to excellent academic achievementRead More »