Tuesday, September 28, 2010

Difference Between Manual Transmission and Automatic Transmission

Generally to change the vehicle's gear ratio, these automatic and manual transmissions are used. Both the systems work in similar ways. There is primary difference between manual and automatic transmissions is the driver interaction with them. There is semi-automatic transmission also, it is combination of both manual and automatic transmission elements. There are few differences, such as:
  • A driver has to drive a manual transmission with both the feet. Before changing the gears, the driver has to engage the clutch pedal. Then slowly clutch must be disengaged while the car moves forward. Driver has to repeat this process while car starts to move faster.
  • Correct gear can be selected for the driver in case on automatic transmission. Complex communication system can be used in this transmission. Information is incorporated by this system about speed of the car, whether the driver is accelerating and braking and about revolutions per minute of the engine.
  • Procedure of the manual transmission can be challenging and it can be steep and frustrating. Drivers of manual transmission can be tried by constantly changing the gear. Generally, more urban commuters prefer automatic transmission.
  • But some people like this manual transmission, because control is given by this transmission to driver.
  • More fuel can be consumed by automatic transmission vehicles than manual transmission i.e., more power is required by automatic transmission to operate.
  • Frequent and complex servicing is required by automatic transmissions than manual transmission. Automatic transmission requires regular oil and fluid changes and engine inspections.
  • If a car battery dies then automatic transmission vehicle will be stuck. If it is in the case of manual, if the car is pushed then it will start.
These are differences between manual transmission and automatic transmission, according to your need and drivers who needs physical needs then they can choose the automatic transmission vehicle.

Tuesday, September 7, 2010

Know About Pre-Employment Marijuana Drug Test

Marijuana is an highly used illegal drug in the United States. In order to detect the usage, marijuana drug test is conducted at different places. There are several types of drug testing methods like saliva drug testing, blood drug testing, urine drug testing, hair drug testing.

Employer of an organization expects the environment to be clean and safe. For making the work environment safer, he wants to choose the right employee for their job. Apart from conducting several skill testing, they even made drug testing as mandatory for preventing the accidents.


As this test will be done for so many people at a time and randomly, the most cheapest and effective test will be the urine test. Although, Urine test cannot determine the THC psychoactive component of marijuana, it can detect the non-psychoactive component of marijuana for THC-COOH. As detection periods for occasional users will be from 1 to 7 days and for chronic users it will be detected from 7 to 100 days.


If you want the immediate result, saliva drug testing can be used. But, unlike the urine test one cannot perfectly detect the presence. Blood test gives the accurate and perfect result for the recent drug usage, but this test is not used because it is expensive. Hair test also can be done, but the recent use cannot be detected.


But generally urine test is performed as the marijuana is much sensitive to this test. Once the job applicants marijuana drug test results are out, depending on the result i.e., if the result is negative then he will be employed by the employer.