Thursday, July 17, 2008

Is this science?

Yesterday, I was in the lab, trying to get my setup working before next Thursday's meeting, when I saw Carrol with some kids coming into the lab. She then introduced her daughter and two lovely grandkids, both girls, to me. The kids were in 6th grade school, and were on vacation from Arlington, TX. Carrol explained to them about my research, but then wanted me to tell them more. So I started explaining to them about wastewater treatment and how I was trying to get rid of the 'microbes' in the dirty water. And then, one of the kids asked me, "Is this science"?

That question startled me for a second. I have interacted with high school kids and have talked to toddlers (who have no other option but to listen, and they can't talk back!), but it has really been a long time I talked to kids in primary/middle school, and that too about research. For kids, there is a clear demarcation of science, history and language. What we see as molecular genetics, wastewater treatment and wireless communication, they see as 'science'.

I replied to her, saying "Yes, this is science and engineering". This was not the only one, there were more to follow. The kid later asked me, "We have our school from 8 in the morning till 3.30 in the afternoon. Do you also have a specific time at which you come here and then leave". The whole conversation with the kids set me thinking on how far I have come from school. At her age, I would have asked similar questions to a graduate student. I don't know if she understood my explanations, but when asked about research and my work, she said, "It is very interesting and exciting". I hope she carries positive memories of this conversation and choses a profession that best appeals to her.

Friday, June 13, 2008

"Dirty Water" Explained

So, here goes the much-promised post on my lab-mate's work on treatment of wastewater, coming out of turkey processing plants.


The lab, the boss, Karen Mancl (pronounced Man-sil) and stand-in boss, Rashmi.


hmm...lots of food! wait a second...


Read the label carefully. This is where all the wastewater is stored. Refrigeration prevents decay of organic matter and thereby, the stink that we get in sewers and septic tanks.


Wastewater from the turkey processing plant - "dirty", smelly, red in color, full of animal blood and fat, high in carbon content (BOD)


It needs to go through these tower like structures, filled with sand, pea gravel /textile felt, where it gets filtered. Microbes growing on the media (sand, felt, etc) eat the carbon present in the wastewater, and reduce the organic content, thereby, cleaning the water.


The final outcome looks like this - clear and devoid of any suspended or organic matter. This water has very low BOD, and it almost drinkable, except for one thing - disinfection. It needs to be treated with disinfectants like chlorine, ozone before it can be consumed by humans. I am working on the disinfection, and that will be another blogpost sometime later.

Hope this was interesting enough.

Monday, April 28, 2008

Indian Hockey Federation and KPS Gill sacked

Breaking News! President of the Indian Hockey Federation (IHF) KPS Gill has been sacked by the Indian Olympic Association (IOA). IOA has also suspended the IHF with immediate effect. IHF is to be replaced by an ad-hoc commission, which will continue to govern Indian hockey. A new President and other office bearers will be elected soon. IOA has decided to take over the IHF so that it could be run in a transparent manner.
The decision was taken after a sting operation conducted by Aaj Tak exposed former IHF Secretary Jothikumaran taking bribe on camera to select a player in the national team. Jothikumaran was forced to resign after the exposure.
Gill's removal is seen as a welcome step towards the revival of Indian Hockey. He held the post for 14 years and refused to step down despite criticism from several quarters. For the first time in 80 years, India failed to qualify for the Olympics. Gill was blamed for the continued decline in the standards of Indian hockey ultimately leading to the failure to qualify for the Olympics.

Source: Breaking News Online, CNN-IBN, NDTV News

Wednesday, April 16, 2008

"Dirty" Water

My next blog would be on wastewater...specifically, it would include my lab-mate's research (with photos!). She's gone on a holiday, and me and my other lab-mate are taking "care" of her set-up. Stay tuned. Meanwhile, get yourself up to speed on what wastewater is all about.

Tuesday, March 18, 2008

Oil Price Bubble?

Supply is up, demand is down, yet the price is soaring. Here's why... (courtesy: Ronald Bailey from ReasonOnline)

Oil prices climbed to their highest level ever, reaching over $108 per barrel this week. And Americans are feeling this price spike at the pump, with gasoline averaging $3.22 per gallon. An analysis released by the investment firm Goldman Sachs suggested that oil prices might soar to $200 per barrel. Does this make sense?

Not really. Although U.S. crude oil inventories have fallen, gasoline inventories are at their highest since March, 1993, notes Tim Evans, an energy futures analyst at Citigroup's Futures Perspective. World oil production was up 2.5 percent in the first quarter of 2008 over the same period in 2007 while world oil consumption rose by just 2 percent. In fact, world production is projected to be 3.3 percent higher in the second quarter and 4.1 percent higher in the third quarter than the same periods a year ago. On the other hand, world demand is projected to rise by just 1.6 percent over the next six months.

In fact, demand is falling in some countries. According to economist John Kemp at the commodities firm Sempra Metals, the U.S. consumed 4 percent less petroleum in January 2008 than it did the year before. Evans agrees, noting that the U.S. demand for petroleum products began falling off last July. Interestingly, this drop in U.S. oil consumption began before crude prices turned vertical and before we began to see weakness in the broader economy. Even China's thirst for oil is abating somewhat. Its demand for oil, which once rose at 10 percent per year, has now dropped to 6 percent per year. In addition, world surplus oil production capacity has gone from a very tight 1.5 million barrels per day a couple of years ago to more than 3 million barrels today, says petroleum economist Michael Lynch.

So supply is up; relative demand is down and yet, the price of oil is soaring. What's going on? Last week, Exxon Mobil CEO Rex Tillerson blamed a third of the recent run up in oil prices on the weak dollar, another third on geopolitical uncertainty, and the rest on market speculation.

Let's start with geopolitical uncertainties. Last year, oil consumers watched warily as unrest in Nigeria's oil fields, the possibility of war between the U.S. and Iran, and the antics of Venezuela's Hugo Chavez threatened to disrupt oil supplies. That analysis may have once made sense, but most of those tensions have abated in recent months. Nevertheless, it remains true that most of the world's oil is produced in volatile regions and by erratic governments, so the price of crude must still include some kind of political risk premium.

What effect does the falling dollar have on the price of crude? Most oil price contracts are denominated in dollars. The dollar has fallen in value by more than 30 percent against a Federal Reserve index of major currencies since 2002. This means that the price of imports, including oil, have gone up. To some extent, the chief of the Organization of Petroleum Exporting Countries (OPEC) Chakib Khelil was correct when he said earlier this week, "What's happening in the oil market is due to the mismanagement of the U.S. economy." Continuing U.S. trade and fiscal deficits along with lower interest rates are stoking inflationary fears.

That brings us to speculation. Evans observes that since September 2003, the total number of open crude oil futures and options contracts rose by 364 percent. Meanwhile the global demand for petroleum rose by just 8.2 percent. "So the futures and options market has become more important than the physical supplies in driving the price," concludes Evans. "We are seeing investment flows into the oil market that don't have anything to do with the demand and supply of oil."

Investors are treating oil as a hedge against inflation and a falling dollar. Oil markets are part of a negative positive feedback loop in which higher oil prices contribute to higher inflation, which in turn lowers the value of the dollar, which boosts oil prices, and so forth. In other words, the oil market is coming to resemble the gold market (which has also been soaring). Evans notes that most gold traders don't even ask the question of how much gold was mined last year or how much spare gold mining capacity there is.

In the short run, oil prices are very inelastic: A large change in price produces only a small change in demand. If the price of gas goes up a dollar per gallon overnight, you still have to fill your tank to get to work. However, over the long run, consumers and producers respond to higher oil prices. For example, Americans are driving less and have switched to buying more fuel efficient cars.

Higher prices also encourage innovation. Economist Richard Rahn from the Institute for Global Economic Growth believes battery technologies are improving so rapidly that the majority of cars sold in 10 years will be all-electric. This would certainly help drive down the price of oil. Supply is also inelastic—it takes a long time to do the exploration, drilling, and refining necessary to boost production in response to higher prices. This inelasticity of demand and supply means that petroleum prices are very sensitive to relatively small changes in either. This means that prices can fall as steeply has they rose.

Whenever you begin to hear market gurus decree that "this time it's different," as we did during the dot-com bubble and the housing bubble, that's a sure sign of danger in the market. Naturally, proponents of the peak oil theory claim that the recent run up in prices is evidence that the end is nigh. Evans responds, "Fears of peak oil are what this market has in common with the 1980s, not what is different." Recall that during the "oil crisis" of the 1970s when oil prices were as high as they are today, U.S. oil consumption declined by 13 percent between 1973 and 1983. The higher prices of the 1970s led eventually to an oil glut and prices fell to about $10 a barrel by 1986.

So what will happen to oil prices over the next few years? No one is predicting $10 per barrel oil. However, once the current bubble bursts, both Evans and Lynch believe that the price of crude will settle at around $60 to $70 per barrel in the next couple of years. "It's very hard to pinpoint just how long a bubble can expand before it breaks. Getting the timing right is not an easy matter," says Evans. But he adds, "I think that this is the riskiest time to be long in crude oil since 1980."

Saturday, February 02, 2008

OFI Campaign ends

The One For India (OFI) campaign arranged by AID Columbus came to an end 2 days ago. (See earlier post to know about OFI). We were able to generate $3000 in a span of 40 days and sold about 60 calendars. Thanks to everyone who contributed to this campaign. If you were not able to but would like to donate later or know more about us, send me an email.