Covalent bond

Once pups are weaned from their mother’s the frequency of mother-pup vocalizations drastically decreases. The decrease in calling, especially in the pup, is visible as the pup matures. Pups begin to call within minutes of birth, and spend more time calling during their first day of life than ever. Using time-budget analysis, the calling activity of fur seal pups was examined at the ages of 1, 3, 5, 9-12, and 30 days old, the number of calls were negatively correlated with age. This data can be…

Pricing Bonds in the Australian Market is an article, which appeared in the 33rd Australian Journal of Management in 2008. Written by Bilson et al., the article does an incredible job in highlighting issues pertaining to the modeling of the term structure of interest rates. The article begins by appreciating the fact that there are various models associated with the yield curve. The authors highlight the significance of the term structure of interest rates by offering valid examples. For…

creation of war bonds. During WWII, war bonds were created/advertised, used to produce war supplies, and then paid back after the war. War bonds existed before WWII, but it was Secretary of the Treasury Henry Morgenthau Jr. who began planning a defense bond program for the United States. He recruited political scientist Peter Odegard to help him create a program. They developed a voluntary loan system that was commonly called “defense bonds.” The idea was that citizens could purchase the bonds…

Introduction: Egyptian scrolls dating back to 1534 BC were found discussing the medical ability of the willow tree to relive aches and pains. Even the famous Hippocrates wrote about the powder that could be obtained from the willow tree in 5th century BC. In 216 AD, the willow tree was a popular medicinal product used throughout the world. However the raw product taken from the willow tree had harsh effects on the body and stomach. Throughout the 1800’s many chemists attempted to covert…

good things must come to an end…or so they say. Of course, James Bond apparently never got that memo – you know, because he seems to get younger and more ambitious with each passing decade. With that said, it’s impossible not to admire the fan base and longevity that this character has built for itself, stemming back to the 1950s. At the same time, it’s also terribly difficult not to admire the stylistic swagger that the current Bond, Daniel Craig, has brought to the ever-growing franchise.…

While azulene and naphthalene have the same formula of C10H8, their differing arrangement of carbon atoms in rings causes disparities in their molecular orbitals. As shown in the energy difference calculations below Table 1, naphthalene has an energy difference of -10.184 between its HOMO and LUMO orbitals while azulene has one of +6.904. The low energy difference of naphthalene FMOs would suggest that its HOMO and LUMO orbitals have relatively similar distributions of electron density among odd…

The use of steroids, also known as performance enhancing drugs (PEDs), in baseball has been illegal in Major League Baseball since 1991, even though they did not start league wide testing until 2003. And even though they are outlawed, many still use steroids and get away with it. This gives them an unfair advantage and if not used properly can ruin not only their careers, but their lives. I believe that steroids should become legal in the MLB to level the playing field. Many people cheat and get…

“Mommy, how are babies made?” Every person has a different response when a little kid asks where babies come from. The stork is the most common story, and some parents even say they bought the kit at Walmart and assembled it. Some cultures believe the baby was found in a cabbage patch or that the stars are just babies looking down, waiting to find their place on earth. In various cases, the parents will simply explain how the baby started growing inside mommy and that you have to wait nine…

Introduction Affinity Chromatography, also referred to as biospecific chromatography, is a technique of partitioning rooted in biological affinity (Dean). This practice capitalizes on complex interactions such as bond formation between enzymes and substrate, or more broadly: macromolecules and ligands. Purification is at the center of the use of affinity chromatography. In general, samples may be run through a gel that contains a corresponding component that binds with the sample at certain…

Relationships are complicated. The film “Her”, directed by Spike Jonze, is a clear example of this. Throughout the film, Theodore Twombly is challenged by the decision of having a relationship with a digital lifeform. He struggles with his artificial companion, Samantha, wishing that she were real. Samantha faces many of her own challenges as well, one of them being that she is unable to have human interaction with Theodore. Although, technology helps Theodore to break out of his comfort zone,…