Tag: learning

Last time we talked about the history of the periodic table and some of the reasons behind why it “works”.  We also took a look at the first three periods (rows), the very short first period, with only two elements, and the two short periods with eight elements each in them.  We also grouped these elements into families (columns) that show similar chemical properties.

Now we shall look at Periods 4 and 5, the two long periods.  These periods (and later ones) contain the transition metals.  In the first three periods, chemical properties change radically from one element to the next as atomic number increases.  For example, fluorine, the most chemically reactive element sits next to neon, which forms no known ground state chemical compounds.

The single most important piece of scientific literature is, in my opinion, the periodic table.  Those who understand what it means, and what it actually implies, have mastered more science than most professors ever will.  This may sound like an exaggeration, but come with me and I think that I can prove it to you.

One thing that scientists like to do is to make order out of what seems to be a myriad of disjointed facts.  The table does just this.  The table did not just appear overnight; it is the product of contributions by hundreds of scientists over decades and finally took a form sort of like what we use today in 1869.  That was the year in which Dmitrii Mendeleev published his table, but he was not alone by far.

I should have spent yesterday afternoon grading Java programs, or perhaps preparing some files to show my Tuesday night class how to better use the animation capabilities of Director 11.  But it was only Saturday and procrastination is what it is, so I decided to put that off until today.  So I created a graphic.  As I am wont to do, I saved often along the way, so I actually created a whole series of graphics.

Which one is best is in the eye of the beholder.

Today, in order to continue the procrastination process, I decided to provide a glimpse, perhaps, at how the artistic part of my brain functions.

See Burning the Midnight Oil for Living Energy Independence for crosspost links

On Thursday, djrekluse at the Daily Kos said:

Despite considerable tension and even aversion in green communities to the subject, we cannot talk about “going green” without making it a discussion about growth through various hierarchies of human development.  Really, the subject of growth should come as second nature to “green” thinkers and communities-after all, a blade of grass must grow to two inches before it can grow to six; a tree must grow from acorn to sapling before it can someday become a mighty oak.  In much the same way, our consciousness, our values, and our cultures must also move through several distinct stages of growth before we can even begin to even see the problem, let alone care enough to do anything about it.

In other words, “going green” really means “growing green,” and represents the crux of almost all the global issues we presently face: it’s not a problem of human imagination, technological innovation, or even political will-it’s a problem of human growth

Consciousness, Culture, and Climate: Growing Green

This provides a frame for thinking about growing an energy independent transport system, and about the multiple ways that local, regional, and inter-regional rail systems can help in that growth.

Many lifeforms communicate.  Whether it is from pheromones, like the insects (and to a smaller extent, us) to verbal language, there is some sort of communication.

Other than the opposed thumb, the thing that makes us unique is that we not only communicate, we write it down.  That is a seminal difference.  Here is why.

This is the second of two installments on non-nutritive sweeteners.  This time we will talk about one very ancient one, the new ultra sweet aspartame analogue, and a couple of natural products, one of which is gaining popularity these days.

Non-nutritive sweeteners probably have value in managing conditions such as diabetes and obesity where caloric intake, particularly from simple carbohydrates, needs to be restricted.  However, these materials are not panaceas and other dietary measures are essential to control either of those conditions.  Some studies also are consistent with the premise that the mere sensation of sweetness can cause a rise in blood glucose in non-diabetic people, thus making these agents act like sugar even though they contain no calories.  These interpretations are controversial, though.

Hello, folks.  Here is another installment regarding the things that we eat.  Remember, I am a trained expert in the field (I used to head one the few “Megalabs” for FDA) so I know of what I speak.  This time we will talk about non-nutritive sweeteners since we all use them from time to time, even if we do not know it.

I was going to talk about the drugs that Michael Jackson took before he died a short time ago, but the information is still dribbling out from the Coroner’s office, and I want the whole story before I add my opinion about it.  But be assured that I will weigh in when the story is out in the open.

Milk, in its human form, has  been the foundation of nutrition for hominid infants for millions of years.  In the past few millenia, animals have been domesticated for milk and meat.  Many of them are ruminants, but not all are.  The camel and the horse are notable exceptions, highly regarded in several cultures for their milk.

In the western world, kine (aka cattle), (Bos) are almost exclusively used for providing milk in useful quantities.  As a matter of fact, in the United States this is such an important agricultural industry that entire sets of laws and price supports have been enacted.

This essay looks into the the issue of milk that is produced with Bovine Growth Hormone (BGH), (also called Bovine Somatotropin (BST))and will likely prove to be controversial.  This is an important issue, and I will attempt to give it a fair treatment, but remember that many folks have already made up their minds without considering the actual data, and it is difficult to make folks who have already made decisions based on emotion to see logic.  With that said, here we go.

There is a lot of attention regarding the topic of trans fats, but hardly anyone outside of chemists and biochemists really understands what a trans fat actually is.  This evening we will discuss what they are, whence they come, and some health aspects of them.

This is a controversial subject (not as controversial as high fructose corn sweetener), in that the medical community is not completely in unison with the interpretation of the data from studies.  However, the case is more clear than with high fructose corn sweetener.