From NYT > Science:

After almost two decades of delays, the Environmental Protection Agency said Thursday that it was on track to implement a regulation requiring the construction industry to help prevent cases of lead poisoning among children. The agency said it expected more t

Two transformers, each of them has a primary voltage 120v, but they have different magnetic materials and so they have different magnetizing currents.

Now, if the two primaries are connected in series across the 120v mains supply and their two secondaries left opened, does each primary will hav

I'm planning to pour a concrete driveway. The base is sand, about 15' deep. I'll be driving my truck, car and camper over it. The camper is a fifth wheel, about 10,000 lbs when loaded. Being a fifth wheel, some of the load is transferred to the truck. Is it acceptable to use the cement mix containin

What is the reason for the squeaking front end? A dry bearing? How can I repair and or stop the squeaking? My vehicle is a 1999 Ford Explorer 6 Cylinder 4WD 245 E 4.0L EFI SOHC.

I need a Revox A700 Remote Control Unit where do I purchase it?

Hi, this is very unusual but interesting to know that power system is affected due to VFDs and EMI is a major concern for installations in the area. I have come across one such recurring problem of ELR tripping at source main switch Board for no apparent fault. Monitorinng over time and increasing l

I am researching software to use to markup pdf files. We get pdf files from engineering and need to add balloons to identify the dimensions so that we can reference the dimensions with our suppliers. Example: Dimension T104 (top view, dim id # 104) Adobe Acrobat 9.0 does it but not easily. I

Hi all,

Has anybody installed ANSYS to Centos?

I waiting your answer.

Best regards

Hi guys , experts, Gurus , users and collaborators.

I'm looking all information about Ice thermal Storage , The revolutionary and green way for cooling in HVAC applications.

I already know a couple of things about it , for example , the system use a circuit to make ice during the n

Hi, I have a Power Point Presentation made in Windows 2007 and I would like to share it with others over the Internet, but I don't want anyone to modify it. What can I do to protect the file?

Everyone knows that any manufacturer or service provider researches what their competitors are doing. It's called competitive intelligence. The more a company knows about its competitors, their technology, and pricing structure, the better off they are in designing new products to compete in the mar

can anybody tell, what is Differance between root area and tensile stress area for bolt. in ASME B 1.1 tensile stress area is given . can i use tensile stress area in bolted flange calculation as per ASME SEC8 DIV. 1 APPE. 2 , OR BS PD 5500. as i have noticed that tensile stress area is more than ro

Dear Engineers,

I am designing a project that will enable me use an Alternator with higher DC output as well normal AC output to power. Can I get such a single Alternator that will produce this output as described below:

AC Output: 220V, Normal Amp AC

DC Output: 24V, 45 - 60Amp DC

Can anyone suggest the alternate material of PA 46+GF30% in terms of Temperature resistivity, thermal conductivity? The application is it will be used in Switch Body Assy with in-built Coupler in Ignition Swicth of Automotive Car.

B. Santra

The budget for the U.S. Occupational Safety and Health Administration (OSHA) is increasing this year and the agency seems to be reinvigorated. The agency is apparently gearing up for tougher enforcement of existing regulations. Those developments have raised concerns that ergonomic rules that were r

A soon-to-be published study shows that group brainstorming may not be the best idea for generating new ideas. In fact, it may block other ideas and lead to a conformity of thought. How do you inspire your employees to think creatively and collectively at the same time? Is it better to let people wo

Dear Friends,

I am looking for a sewage water treatment system design which can do 250 m3/day for a population of 1500 people in a residential complex. I have recvd 3 offers from different water treatment companies which have the following technologies:

1. Fluidised Media React

I have heard that Piping that is designed to ASME B 31.4 / B 31.8 codes, Mill Tolerance is not normally considered. i. e M.T = 0. whats the significance of this statement. Is it true? Moreover do we consider the Mill Tolerance for ERW / Seam Welded Pipes?

I was wondering how to calculate the weight of 500 cubic mm and 630 cubic mm 33 K V x 90 cable

I am trying to determine what size batter I need. Below is the info. I am coming up with a 12v 200Ah-hr battery. What do you think?

Usage: 336watts for 5hrs

Charge:370watts for 8hrs