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Why the Signal Will Not Come Under the Cell Tower

03/03/2015
posted in Communications & Electronics
by vijay guntimadugu
when we stand under the cell tower we will not get the proper signal why?? and we go some distance the signal will come why this happen??
Views: 12, Comments: 3
Last comment 03/03/2015 by lyn
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1-Stroke Engine for Hybrid Applications

03/03/2015
posted in Transportation
by ASleasman
I was doing some research and came across this new engine that is under development. It's a single stroke rotary engine that gets the efficiency of a...
Views: 13, Comments: 1
Last comment 03/03/2015 by Fredski
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New Alloy for Generating Electricity

03/03/2015
posted in Engineering Projects
by Bigzacdog123
Would anyone know where to find a block of alloy Ni45Co5Mn40Sn10. I read Dr.James review from the UM and find it intriguing. Would like to explore fur...
Views: 11, Comments: 2
Last comment 03/03/2015 by Randall
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Compact Event Timing Module/Time Interval Counter Applications

03/03/2015
posted in New Technologies & Research
by Katrina_Even
Good day to all! I'm working in a EU funded R&D project to develop new series of compact size and low power consumption event timing modules. Th...
Pathfinder Tags: event timer gravimetry interval counter ranging resolution ...
Views: 9, Comments: 0
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EDC

03/03/2015
posted in Communications & Electronics
by vijay guntimadugu
why cant we use diodes as switches in our homes as we KNOW diode act as a switch why cant we make a diode which can able to withdraw 230 volts
Views: 25, Comments: 10
Last comment 03/03/2015 by JohnDG
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How an Oscillator Gets Output Without Giving Input Signal?

03/03/2015
posted in Communications & Electronics
by Lokeshloki
HOW AN OSCILLATOR GETS OUTPUT WITHOUT GIVING INPUT SIGNAL? I THINK VDC SUPPLY IS JUST FOR POWER UP THE CIRCUIT AND IT'S NOT A INPUT SIGNAL.
Pathfinder Tags: amplifiers INPUT NO SIGNAL OSCILLATORS Output ...
Views: 22, Comments: 6
Last comment 03/03/2015 by redfred
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Solution To A Supply Chain Case Study

03/03/2015
posted in Transportation
by nitishmech
Hi Guys, I am looking for a solution to a supply chain case study, Company Name Company A Vendors V1 V2 V3 V4 V5 V6 V7 V8 Location of vendor Pu...
Pathfinder Tags: Cost Optimization ocean freight costs supply chain transportation cost
Views: 43, Comments: 3
Last comment 03/03/2015 by redfred
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Operational Technology Security Procedure

03/03/2015
posted in Communications & Electronics
by garuda777
Goodmorning Gents, Good day to all. I would like to produce a procedure for operational technology security which one will be help to protect our DCS...
Pathfinder Tags: operational technology security
Views: 31, Comments: 2
Last comment 03/03/2015 by RAMConsult
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2000 Cavalier Won't Start, Will Try to and Crank but Won't Start

03/02/2015
posted in Transportation
by andrewbrock7
ii drove all day and stopped at the gas station and put 20$ worth of gas in and tried to go home but wouldnt start my step dad came to help and got it...
Views: 97, Comments: 22
Last comment 03/03/2015 by nuccore
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New Oxidant Process for Cleaning up Water

03/02/2015
posted in Sustainable Engineering
by James Stewart
New sheriff in town for bad actors in water is OH• (OH free radical). This guy has a higher standard oxidation potential than even ozone (O3)....
Pathfinder Tags: oxidative treatment of water tertiary effluent water recycling
Views: 87, Comments: 10
Last comment 03/03/2015 by James Stewart
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3D Printed Jet Engine and Fast Prototype

03/02/2015
posted in Aerospace
by James Stewart
I ran across this at the bottom of one of the list of stories of the day: http://insights.globalspec.com/article/611/jet-engine-is-printed-using-3d-t...
Pathfinder Tags: 3D printed engines prototyping small jet engines
Views: 93, Comments: 7
Last comment 03/03/2015 by Wal
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What is the Difference Between Data Concentrator & RTU?

03/02/2015
posted in Electrical Engineering
by Anonymous Poster
With reference to Substation Automation artitechture block daigram of EIL for OPAL Dahej Package I want to ask what is the difference between Data con...
Views: 87, Comments: 7
Last comment 03/03/2015 by Anonymous Poster
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Piezoelectric Vibrators for Skin Stimulation

03/02/2015
posted in Software & Programming
by dnam2001
Since skin is densely filled with mechanoreceptors able to sense vibrations even with very short indentation (e.g. 30 micron) vibrating the skin could...
Pathfinder Tags: skin stimulation feedback vibration
Views: 109, Comments: 8
Last comment 03/03/2015 by Anonymous Poster
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Should I Shovel the Snow off my Roof?

02/26/2015
posted in Civil Engineering
by ASleasman
I live in upstate NY and this has been a year of plenty of snow and very cold temperatures. My house sits quietly with a roof well covered in snow of...
Views: 523, Comments: 49
Last comment 03/03/2015 by Spinco
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Need Some Chemistry Assistance.

02/25/2015
posted in Chemical & Material Science
by tcmtech
As some of you know I heat my house primarily off of my boiler system that burns pretty much anything including as I have it set up now used oil. Wel...
Views: 576, Comments: 45
Last comment 03/02/2015 by tcmtech
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Merging Current and Voltage Sources - How Can I Do This?

02/25/2015
posted in Electrical Engineering
by scall93
I wish to power a +-12vdc pump which needs 300mA to drive the motor using a National Instruments USB-6009 data acquisition unit. The output of this de...
Pathfinder Tags: current source voltage op-amp
Views: 347, Comments: 44
Last comment 03/02/2015 by jack of all trades
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Why is the Radiator Called Radiator?

02/26/2015
posted in Mechanical Engineering
by Anonymous Poster
we all know that there is heat exchange process occurs in radiator between coolant or water + coolant with the hot gases. there is always medium as tu...
Views: 343, Comments: 43
Last comment 03/02/2015 by Oomborrie
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How to Increase Turbulence in a Chemical Reactor

03/02/2015
posted in General Discussion
by r&ddoc
At our facility we have a 1,000 liter jacketed chemical reactor (Image borrowed from the web) used in the manufacturing of polymers in aqueous suspens...
Pathfinder Tags: Increase of turbulence in reactor
Views: 169, Comments: 35
Last comment 03/03/2015 by phoenix911
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How Would you React to Such a Reply? - Bench-top Machine

02/26/2015
posted in General Discussion
by r&ddoc
Hi, for a new assembly process I am looking for a bench-top machine to slip a 2.5mm ID plastic tube on the 3.5 mm barb of a 316L SS trocar. I searched...
Pathfinder Tags: weird reply from salesperson
Views: 457, Comments: 35
Last comment 03/03/2015 by r&ddoc
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Ernest Hemmings, 1926-2015

03/03/2015 posted in Hemmings Motor News Blog
by dstrohl
An Illinois parts dealer who created an institution in the world of automotive history, Ernest Robert Hemmings, the father of Hemmings Motor News,...
Pathfinder Tags: classic auto coverage Hemmings reporting
Views: 11, Comments: 0
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My Hit-and-Miss Experiences with Parts Cars

03/02/2015 posted in Hemmings Motor News Blog
by dstrohl
Parts car availability seems to be shuffling toward the realm of dinosaurs, VCR repairmen, desktop computers and hula-hoops, thanks mostly to the...
Pathfinder Tags: classic auto Parts parts car restoration
Views: 111, Comments: 0
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What Do Coated Fabrics Have In Common with Ice Cream?

03/02/2015 posted in Elasto Proxy's Sealing Solutions Blog
by Doug Sharpe
What's the best way to enjoy an ice cream sundae? Do you add chocolate syrup, or caramel instead? Smuckers, a well-known maker of ice cream topping...
Pathfinder Tags: coated fabrics industrial fabrics insulation seals textiles
Views: 60, Comments: 0
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New Titanium-Making Process

03/02/2015 posted in Roger's Equations
by Roger Pink
Recently I posted an article about a new Steel Alloy stronger than Titanium. It looks like there's been an advancement in the processing of titanium t...
Views: 113, Comments: 4
Last comment 03/03/2015 by jhhassociates
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Why Tool Life Can Vary: Carbon and Alloy Steels

03/02/2015 posted in Speaking of Precision
by Milo
Tool life can vary when machining carbon and alloy steels despite the use of our best technology and our efforts to control our processes. Many...
Pathfinder Tags: life metal quality tool
Views: 72, Comments: 0
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Unconventionals Enter a New Phase

03/02/2015 posted in Oil & Gas Technology
by IHS GlobalSpec eNewsletter
Wood Mackenzie's prediction in the Unconventional Oil & Gas Report suggests that the unconventional revolution is entering a new phase. In the pas...
Views: 54, Comments: 0
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100th Site Release Provides New Toolbox Apps (Free)

03/02/2015 posted in IHS ESDU Blog
by SavvyExacta
IHS ESDU provides validated design methods for aerospace engineers. One perk of an ESDU subscription is that these methods are constantly being update...
Views: 47, Comments: 0
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Microgrids – Nation’s Future towards Clean Energy

03/01/2015 posted in Alternative & Renewable Energy Blog
by sanasyed24
A microgrid is an integrated energy system with control capability of operating independently or in parallel with an existing utility grid, managin...
Views: 112, Comments: 2
Last comment 03/02/2015 by Wal
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Science Develops a Spider Sense

03/01/2015 posted in Shock, Vibration and Noise Blog
by IHS GlobalSpec eNewsletter
Spiders detect the tiniest of vibrations to avoid danger. Scientists hope to capture this "early alert" capability with "nanoscale crack junction-base...
Views: 77, Comments: 1
Last comment 03/02/2015 by adreasler
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3464-Cube: Newsletter Challenge (March 2015)

02/28/2015 posted in Challenge Questions
This month's Challenge Question: Specs & Techs from IHS Engineering360: A 2-cube (square) has 4 vertices and 4 edges. A 3-cube (cube) has 8 vert...
Pathfinder Tags: challenge question characteristic cube Euler
Views: 391, Comments: 13
Last comment 03/02/2015 by SolarEagle
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Compact Terahertz Sensor Could Alleviate Airport Security Hassles

02/28/2015 posted in Sensors & Switches
by IHS GlobalSpec eNewsletter
A new security device could dramatically reduce or eliminate airport security hassles. It detects explosives, biological substances, and chemical agen...
Views: 102, Comments: 0
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My Steel Won't Harden!

02/27/2015 posted in Speaking of Precision
by Milo
There are only a handful of things to check when your steel parts fail to respond to quench and temper heat treatment. Here's my list in decreasing p...
Pathfinder Tags: harden metal quench steel
Views: 197, Comments: 3
Last comment 03/01/2015 by Kulas
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Recovered After Four-Plus Decades, Stolen 1972 Corvette May Not Return to its Original Owner

02/27/2015 posted in Hemmings Motor News Blog
by dstrohl
In 1972, a young Terry Dietrich of DeKalb County, Georgia, purchased a new Corvette coupe, a car she still refers to as her first love. It was...
Pathfinder Tags: car theft classic auto corvette
Views: 336, Comments: 2
Last comment 02/28/2015 by spaceracer
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The Year in Test — 2015

02/27/2015 posted in Quality Control
by IHS GlobalSpec eNewsletter
What five factors will most significantly influence the path of test this year? Thirty years ago Nicholas Negroponte speculated that wired technologie...
Views: 88, Comments: 0
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Caption This for 02/27/15

02/26/2015 posted in Caption This!
by Kaplin
This week's image: Be sure to vote for your favorite caption! Thanks to energyconversion for submitting this image.
Pathfinder Tags: Caption this engineering images funny images human pyramid
Views: 502, Comments: 49
Last comment 03/03/2015 by texasron
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One-Off Buick Blackhawk Show Car Could Fetch Up to $450,000 at Auction

02/26/2015 posted in Hemmings Motor News Blog
by dstrohl
Any resemblance to the Y-Job is purely intentional. Yet while the original Buick dream car will likely remain in GM's possession as long as there...
Pathfinder Tags: auction buick classic auto unique
Views: 207, Comments: 0
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