Category: Elements

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Euclid, “The Elements”, 300 BC. CONTINUED-TWO.

  Here I present: Euclid, The Elements’, 300BC. CONTINUED-TWO. INTRODUCTION.               Euclid was a Greek mathematician who lived in Alexandria, EGYPT, during the reign of Ptolemy-I, placing his writing around 300 BC.  Euclid organized Greek geometry into a 13-volume set of books named The Elements’ in which the geometric relationships were derived through deductive reasoning. Thus, today’s geometry is often called Euclidean Geometry, also known as plane geometry because the relationships deal with flat surfaces. TWO MATHEMATICAL TOOLS. … Continue reading Euclid, “The Elements”, 300 BC. CONTINUED-TWO.

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“Vitamin-B12 Transporter”, CONTINUED

  Here I present: “Vitamin-B12 Transporter“, CONTINUED. INTRODUCTION. Vitamin-B12 transporter, ABC-type Enzyme Commission 7.6.2.8 is a translocase for “cobalamuin” (vitamin B12). The translocase converts ATP into ADP energetically to bring vitamin B12 into cells. Cobalamin is a cobalt containing molecule of complex structure, and is shown essential to the body diet.  Vitamin B12 in humans … Continue reading “Vitamin-B12 Transporter”, CONTINUED

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Gerhard Michal, “METABOLIC PATHWAYS”, Wallchart-1965.

  ”Chemical Notation using the Nemeth Braille’ Code”, 2023 was the topic of an earlier blog post. Here I present: Gerhard Michal, “METABOLIC PATHWAYS”, Wallchart-1965. INTRODUCTION. The first edition of the wallchart was published in 1965. Gerhard Michal as Biochemistry’ professor published decades ago (before this 2005 edition) a wallchart that became the gold standard for molecular biology.  Part #1 “Metabolic Pathways” & Part … Continue reading Gerhard Michal, “METABOLIC PATHWAYS”, Wallchart-1965.

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Royal Society of Chemistry, “MERCK INDEX: Encyclopedia of Chemicals, Drugs & Biologicals”, 15th edition, 2708 pages, 2013.

INTRODUCTION. The Merck Index is the definitive reference work for scientists and professionals looking for authoritative information on chemicals, drugs and biologicals. It has been the leading source of information on chemical compounds for generations of scientists and professionals, selling over one million (1,000,000) copies since its first publication in 1889. The Merck Index contains … Continue reading Royal Society of Chemistry, “MERCK INDEX: Encyclopedia of Chemicals, Drugs & Biologicals”, 15th edition, 2708 pages, 2013.

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UN-WHO, “100 Most Popular Drugs not Assigned an ATC Code”, 2021. PART TWO (II).

INTRODUCTION. Anatomical therapeutic chemicals (ATC) classification was the topic of an earlier blog post. Here is a discussion language. Rudyard Kipling quoting to start: “Words are, of course, the most powerful, drug used by mankind.” The statement by Rudyard Kipling is the essence of the problem with the “100 drugs not  assigned ATC classification”. They … Continue reading UN-WHO, “100 Most Popular Drugs not Assigned an ATC Code”, 2021. PART TWO (II).