Tree of life
All Organisms Share Common Characteristics
As I explained in last month’s column, all life forms share at least six common properties (variations of this list that include additional properties):
Order
Growth
Homeostasis
Metabolism
Reproduction
Respiration
In April I focused on order and growth. This article will focus on homeostasis and metabolism.
Homeostasis
To survive, cells must be able to regulate their internal environment….
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Tree of life
All Organisms Share Common Characteristics
In last month’s column, I wrote about what microbes are, where they are found, and why everyone should have some understanding of the microbial world. In this article, I will provide a superficial overview of how microbes live. I’ll start with a summary of the common characteristics of all living things. As illustrated in Figure 1, all life forms share at least six common properties (variations of this list that include…
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Microorganisms – a) virus; b) bacteria; c) archaea; d) yeast; d) mold.
Each year, on the first morning of STLE’s Metalworking Fluid Management Certificate Training Course, I ask attendees about their backgrounds. Invariably, the majority have at least undergraduate degrees in chemistry, engineering, or chemical engineering. However, of the more than 600 people who have taken the course since 2004, fewer than 50 have had a microbiology course.
Globally, biodeterioration –…
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Leaking underground storage tank. Microbiologically influenced corrosion (MIC) created numerous holes in this home heating oil fuel tank.
Definition
AMPP (formerly NACE) and ASTM define corrosion as “the deterioration of a material, usually a metal, that results from a chemical or electrochemical reaction with its environment” (ASTM Terminology G193). AMPP defines microbiologically influenced corrosion (MIC) as “corrosion affected by the presence or activity, or both, of…
Bottom sample from ultra-low-sulfur diesel tank showing hazy fuel over bottoms-water loaded with suspended solids.
Opportunity Cost
In two previous articles, I’ve discussed the opportunity costs associated with premature filter plugging (see November 2016 and February 2019). My November 2016 article focused on the disconnect between operator awareness and the actual incidence of substantial contamination in underground storage tanks (UST) and fuel transfer equipment between…
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