Genius Traveler 350

In one of my previous posts, I did mention about my broken Genius mouse. It was a trackball actually - Genius Traveler 350. I used it with my notebook. Here I attach a few pictures of it. You can see where the cord went bad. I should say that the cord is not robust enough for my usage.

 Logitech Mouseman M-BA47

This is Logitech Mouseman M-BA47 rollerball mouse. I just bought this "Dell by Logitech" mouse at a very cheap price around US$3.50. It was a new-old-stock (that bad photo was due to my horrible camera phone). I am connecting this to my office desktop PC.
    So, what do I think of this mouse? It is an old tech rollerball mouse. But this is good enough for my desktop since I am going to place it on a smooth flat surface. Having an optical mouse will not have much advantage over this rollerball in this case. In terms of size and design, I am so impressed with the grip provided by the rubber surface on the left and right side. It feels much more natural and comfortable compared to the Logitech M100r and heavier (therefore feels more solid). The scroll wheel functions very well like other Logitech mouses(mice?) unlike some other brands with erratic scrolling. It also has an extra button on its lower left side for your thumb to click. This can be customized using the software downloadable from Logitech's website. But sometimes my thumb accidentally clicks the button when I hold the mouse extra tight. So I prefer to leave it unassigned. As a conclusion, this is a very good mouse considering the price and if you don't mind the old rollerball tech, grab one as a spare. It is really worth it.

Review: Comparing Genius PowerScroll Eye U+P mouse and Logitech M100r mouse

   All this while, I have been using Genius mouse with my desktop. The problem with the Genius mouse is the scrolling wheel. It just wouldn't work as I expected it to. If I scroll up or down quickly, it just moved up or down and return to original position. It is irritating when you are rushing to look for something in a long article. I got the Genius mouse new bundled with Genius Comfy KB-21e Scroll keyboard. Interestingly the wheel on the keyboard works very well. So I do not know where Genius went wrong - the design or the little components inside.

   At the same time I was using Genius Trackball Traveler 350 with my notebook. However, recently I damaged its cord. So I went shopping for a simple mouse with less damage to my pocket and get the cheapest Logitech which was the Logitech M100r mouse. I actually wanted to buy the cheapest Microsoft mouse but this M100r was cheaper. To my surprise it works really well for that kind of price. Even though it is lighter (feels cheap) compared to the Genius, but the wheel works really well no matter how fast I run the wheel. The size is also big enough for my palm (unlike the smaller mouse which are so common these days which I hate). Therefore it is really good value for money.

Body Temperature Guide (in Celcius and Fahrenheit)
   This is based on my experience. Not to be used for writing refereed articles. Outside this range, it is definitely abnormal

Tag: Celcius, Fahrenheit conversion guide, body temperature, normal, fever

Iskandar Airport

Aki built this airport for Daniel

Tag: Airport modelling, Daniel, DIY, creative,

HPLC and quercetin

I've been running my HPLC for the last few feeks to check the retention time of few (single) standard flavonoids and their UV spectra. I expected the peaks would have come out when I monitored at 280nm and 365nm but the apparently life is not that simple. My quercetin standard didn't produce any peak at 365nm. Maybe the standard has degraded over time. I just received another unopened bottle of quercetin. So let see if this one is any different from the previous one
- HPLC: Waters Alliance with PDA detector
- Temp: 30degC
- Column:
- Flow rate: 0.2ml/min
- Mobile phase: ACN, MeOH



Tag: HPLC, Waters 2695 Alliance, PDA