<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/"><channel><title>CR4 - Recent Forum Threads and Blog Entries</title><link>http://cr4.globalspec.com</link><description><![CDATA[Recent content from CR4, The Engineer&apos;s Place for News and Discussion]]></description><copyright>Copyright 2013</copyright><pubDate>Fri, 24 May 2013 08:37:02 EST</pubDate><generator>http://cr4.globalspec.com</generator><item><title><![CDATA[DC Breaker in AC Circuit]]></title><link><![CDATA[http://cr4.globalspec.com/thread/84824/DC-Breaker-in-AC-Circuit?from_rss=1]]></link><description><![CDATA[I&apos;ve seen postings before regarding the AC in DC circuit, but I can&apos;t find anything regarding DC in an AC circuit. I&apos;m trying to find a breaker that is similar to a switch and could possibly be panel mounted like this breaker

http://www.bluesea.com/products/7268/C-Series_White_Toggle_Circuit_Breake]]></description><pubDate>Fri, 24 May 2013 08:37:02 EST</pubDate><guid><![CDATA[http://cr4.globalspec.com/thread/84824]]></guid><dc:creator>jxm1092</dc:creator><dc:subject>Electrical Engineering</dc:subject></item><item><title><![CDATA[&apos;Elf an&apos; Safety in the UK today...]]></title><link><![CDATA[http://cr4.globalspec.com/thread/84823/Elf-an-Safety-in-the-UK-today?from_rss=1]]></link><description><![CDATA[http://uk.news.yahoo.com/gloucester-cheese-rolling-2013--police-ban-cheese-wheel-cooper-s-hill-double-gloucester-diana-smart-133143758.html#NhKEn8U]]></description><pubDate>Fri, 24 May 2013 05:19:40 EST</pubDate><guid><![CDATA[http://cr4.globalspec.com/thread/84823]]></guid><dc:creator>PWSlack</dc:creator><dc:subject>General Discussion</dc:subject></item><item><title><![CDATA[Basic Vibration Analysis]]></title><link><![CDATA[http://cr4.globalspec.com/thread/84822/Basic-Vibration-Analysis?from_rss=1]]></link><description><![CDATA[Hello CR4,

I am getting ready to purchase a Fluke 805 to measure vibrations on medium speed diesel engine (900 rpm / 2000 HP). I am not formally trained in vibration analysis and I know there is abnormal vibrations present with this engine/generator.

This is being done on client request in order t]]></description><pubDate>Fri, 24 May 2013 02:39:38 EST</pubDate><guid><![CDATA[http://cr4.globalspec.com/thread/84822]]></guid><dc:creator>Tim in Mexico</dc:creator><dc:subject>Instrumentation</dc:subject></item><item><title><![CDATA[Is the Public Finally Starting to Get It ?]]></title><link><![CDATA[http://cr4.globalspec.com/thread/84821/Is-the-Public-Finally-Starting-to-Get-It?from_rss=1]]></link><description><![CDATA[Robert Stone has made a new film about, of all things, the need for nuclear power....

Pandora&apos;s Promise...

A new movement ? Environmentalists for Nuclear Power....

http://www.powerlineblog.com/archives/2013/05/environmentalists-for-nuclear-power.php

Environmentalists debunk high cost of nuclear]]></description><pubDate>Thu, 23 May 2013 20:06:10 EST</pubDate><guid><![CDATA[http://cr4.globalspec.com/thread/84821]]></guid><dc:creator>SolarEagle</dc:creator><dc:subject>General Discussion</dc:subject></item><item><title><![CDATA[Grounding]]></title><link><![CDATA[http://cr4.globalspec.com/thread/84820/Grounding?from_rss=1]]></link><description><![CDATA[Dear All,

For designing grounding for instrumentation ( horn, switches, control vlv, tx ) is it acceptable to connect the grounding onto the cable tray then connect to main earth bar or from instrmunet to earth bar. which preferable and accordance to norm.

Regards

Abdu

Saudi.]]></description><pubDate>Thu, 23 May 2013 19:34:00 EST</pubDate><guid><![CDATA[http://cr4.globalspec.com/thread/84820]]></guid><dc:creator>Anonymous Poster</dc:creator><dc:subject>Instrumentation</dc:subject></item><item><title><![CDATA[Sealing Fitting]]></title><link><![CDATA[http://cr4.globalspec.com/thread/84819/Sealing-Fitting?from_rss=1]]></link><description><![CDATA[Dear All

I&apos;ve installed control vlv and the armored cable was gland to the positioner however the client request to provide sealing fitting in between the gland and the IP positioner.

my question is it in the standard to provide sealing fitting? because in our approved design doesn&apos;t required futu]]></description><pubDate>Thu, 23 May 2013 19:27:01 EST</pubDate><guid><![CDATA[http://cr4.globalspec.com/thread/84819]]></guid><dc:creator>Anonymous Poster</dc:creator><dc:subject>Electrical Engineering</dc:subject></item><item><title><![CDATA[(AC &amp; DC )High voltage]]></title><link><![CDATA[http://cr4.globalspec.com/thread/84818/AC-DC-High-voltage?from_rss=1]]></link><description><![CDATA[Dear all

whats the type of voltage can we use (AC or DC )High voltage to check

generator,transformer,motor ,etc

thanks for all]]></description><pubDate>Thu, 23 May 2013 17:25:36 EST</pubDate><guid><![CDATA[http://cr4.globalspec.com/thread/84818]]></guid><dc:creator>FADHEL</dc:creator><dc:subject>Electrical Engineering</dc:subject></item><item><title><![CDATA[Phone Calls That Make Your Day! ]]></title><link><![CDATA[http://cr4.globalspec.com/thread/84817/Phone-Calls-That-Make-Your-Day?from_rss=1]]></link><description><![CDATA[Ever get a unexpected phone call that just puts a grin on your face and a little sun on your tickly spots all day long?

I got one this morning from a former employer. They were inquiring about a walkout we had at my last job around 2 months ago and to the what&apos;s and why&apos;s of it happening. I also go]]></description><pubDate>Thu, 23 May 2013 16:59:17 EST</pubDate><guid><![CDATA[http://cr4.globalspec.com/thread/84817]]></guid><dc:creator>tcmtech</dc:creator><dc:subject>Quality Assurance / Control</dc:subject></item><item><title><![CDATA[Diode Failure]]></title><link><![CDATA[http://cr4.globalspec.com/thread/84816/Diode-Failure?from_rss=1]]></link><description><![CDATA[Does anyone know if this is possible (regarding a power diode). When a diode fails, typically it does so catastrophically (stops being a diode). What happens when a diode partially fails.

If a diode is leaking current when in reverse polarity mode, what is happening internally? Is it something that]]></description><pubDate>Thu, 23 May 2013 15:25:08 EST</pubDate><guid><![CDATA[http://cr4.globalspec.com/thread/84816]]></guid><dc:creator>Autobroker</dc:creator><dc:subject>Electrical Engineering</dc:subject></item><item><title><![CDATA[Shame On Google? Misleading &quot;Memorial Day&quot; Doodle]]></title><link><![CDATA[http://cr4.globalspec.com/thread/84815/Shame-On-Google-Misleading-Memorial-Day-Doodle?from_rss=1]]></link><description><![CDATA[Today&apos;s Google Doodle should have been better vetted by the folks with the worlds largest search engine. Problem is that many Americans already confuse Memorial Day with Veteran&apos;s Day. Memorial Day is to honor those who have died in service to their country. Veterans Day celebrates all veterans, liv]]></description><pubDate>Thu, 23 May 2013 14:49:09 EST</pubDate><guid><![CDATA[http://cr4.globalspec.com/thread/84815]]></guid><dc:creator>Paddy O&apos;Flanigan</dc:creator><dc:subject>General Discussion</dc:subject></item><item><title><![CDATA[Why Are You Happy?]]></title><link><![CDATA[http://cr4.globalspec.com/thread/84814/Why-Are-You-Happy?from_rss=1]]></link><description><![CDATA[Newton said for every action there is an equal and opposite re-action.

I asked you what your problems were and we got plenty responses, to be fair I must now ask you what makes you feel content, what urges you to count your blessings?

I feel that I have lived during the most interesting time of th]]></description><pubDate>Thu, 23 May 2013 14:29:57 EST</pubDate><guid><![CDATA[http://cr4.globalspec.com/thread/84814]]></guid><dc:creator>Johan van Niekerk</dc:creator><dc:subject>General Discussion</dc:subject></item><item><title><![CDATA[Zebrafish in Research]]></title><link><![CDATA[http://cr4.globalspec.com/blogentry/22635/Zebrafish-in-Research?from_rss=1]]></link><description><![CDATA[Zebrafish have been in the news recently. These small fish are gaining popularity in research labs. Read on to find out why!

Zebrafish Facts

 * One inch long
 * Freshwater fish
 * Native to south and southeast Asia in areas like the Ganges River
 * About 70% of human genes are found in zebrafish]]></description><pubDate>Fri, 24 May 2013 00:00:00 EST</pubDate><guid><![CDATA[http://cr4.globalspec.com/blogentry/22635]]></guid><dc:creator>SavvyExacta</dc:creator><dc:subject>Animal Science</dc:subject></item><item><title><![CDATA[Precision Manufacturing Healthy and&#xa0;Strong]]></title><link><![CDATA[http://cr4.globalspec.com/blogentry/22664/Precision-Manufacturing-Healthy-and-Strong?from_rss=1]]></link><description><![CDATA[We recently caught up with Charles Ruecker of PMPA member company Core Powered to get his opinion on PMTS and the state of precision manufacturing.



Healthy and strong!

Team play. Synergy. Working together.

Thanks Charles.

Core Powered Inc.]]></description><pubDate>Fri, 24 May 2013 00:00:00 EST</pubDate><guid><![CDATA[http://cr4.globalspec.com/blogentry/22664]]></guid><dc:creator>Milo</dc:creator><dc:subject>Speaking of Precision</dc:subject></item><item><title><![CDATA[American Precision Museum - History of Precision Manufacturing]]></title><link><![CDATA[http://cr4.globalspec.com/blogentry/22675/American-Precision-Museum-History-of-Precision-Manufacturing?from_rss=1]]></link><description><![CDATA[Have you heard of the American Precision Museum? Located in Windsor, Vermont, this organization provides maintenance and display of the history of US manufacturing.

From the museum&apos;s website:

Precision manufacturing touches us all. Without it, we would not have the mass communication, rapid transp]]></description><pubDate>Fri, 24 May 2013 00:00:00 EST</pubDate><guid><![CDATA[http://cr4.globalspec.com/blogentry/22675]]></guid><dc:creator>SavvyExacta</dc:creator><dc:subject>TechnoTourist’s Engineering Expeditions</dc:subject></item><item><title><![CDATA[Just for Fun – The Geek Constitution]]></title><link><![CDATA[http://cr4.globalspec.com/blogentry/22698/Just-for-Fun-The-Geek-Constitution?from_rss=1]]></link><description><![CDATA[Memorial Day is dedicated to remembering those who lost their lives while serving in the Armed Forces. Since many of you are probably off enjoying the long weekend and (hopefully) beautiful weather instead of trolling CR4, I decided to do a fun short post.

I wish I could take credit for this s]]></description><pubDate>Fri, 24 May 2013 00:00:00 EST</pubDate><guid><![CDATA[http://cr4.globalspec.com/blogentry/22698]]></guid><dc:creator>Chelsey H</dc:creator><dc:subject>The Engineer&apos;s Notebook</dc:subject></item><item><title><![CDATA[Caption This for 05/24/13]]></title><link><![CDATA[http://cr4.globalspec.com/blogentry/22580/Caption-This-for-05-24-13?from_rss=1]]></link><description><![CDATA[This week&apos;s image:



Be sure to vote for your favorite caption!]]></description><pubDate>Thu, 23 May 2013 16:45:00 EST</pubDate><guid><![CDATA[http://cr4.globalspec.com/blogentry/22580]]></guid><dc:creator>Kaplin</dc:creator><dc:subject>Caption This!</dc:subject></item><item><title><![CDATA[Telescope Photographs Inky &apos;Strawberry Cocktail&apos; Nebula for 15th Birthday]]></title><link><![CDATA[http://cr4.globalspec.com/blogentry/22696/Telescope-Photographs-Inky-Strawberry-Cocktail-Nebula-for-15th-Birthday?from_rss=1]]></link><description><![CDATA[From Science News Headlines - Yahoo! News:

 			 	An amazing photo of a stellar nursery located 6,500 light-years away from Earth marks the 15-year cosmic anniversary of a telescope in the Southern Hemisphere.

 			Read the whole article]]></description><pubDate>Thu, 23 May 2013 11:47:13 EST</pubDate><guid><![CDATA[http://cr4.globalspec.com/blogentry/22696]]></guid><dc:subject>Engineering News</dc:subject></item><item><title><![CDATA[Bandages Silence Genes]]></title><link><![CDATA[http://cr4.globalspec.com/blogentry/22695/Bandages-Silence-Genes?from_rss=1]]></link><description><![CDATA[From Chemical &amp; Engineering News: Nano SCENE:

 			 	Medical researchers think specially tailored RNA sequences could turn off genes in patients&apos; cells to encourage wound healing or to kill tumor cells. Now researchers have developed a nanocoating for bandages that could deliver these fragile]]></description><pubDate>Thu, 23 May 2013 11:46:28 EST</pubDate><guid><![CDATA[http://cr4.globalspec.com/blogentry/22695]]></guid><dc:subject>Engineering News</dc:subject></item><item><title><![CDATA[Atomic-scale Investigations Solve Key Puzzle of LED Efficiency]]></title><link><![CDATA[http://cr4.globalspec.com/blogentry/22694/Atomic-scale-Investigations-Solve-Key-Puzzle-of-LED-Efficiency?from_rss=1]]></link><description><![CDATA[From Phys.org - latest science and technology news stories:

 			 	From the high-resolution glow of flat screen televisions to light bulbs that last for years, light-emitting diodes (LEDs) continue to transform technology. The celebrated efficiency and versatility of LEDs -and other solid-sta]]></description><pubDate>Thu, 23 May 2013 11:45:43 EST</pubDate><guid><![CDATA[http://cr4.globalspec.com/blogentry/22694]]></guid><dc:subject>Engineering News</dc:subject></item><item><title><![CDATA[Northrop Grumman&apos;s MQ-4C Triton Long-Range Drone Completes First Flight]]></title><link><![CDATA[http://cr4.globalspec.com/blogentry/22693/Northrop-Grumman-s-MQ-4C-Triton-Long-Range-Drone-Completes-First-Flight?from_rss=1]]></link><description><![CDATA[From Engadget RSS Feed:

 			 	Northrop Grumman&apos;s MQ-4C Triton unmanned aircraft is one step closer to serving the Navy in reconnaissance and surveillance missions, having just completed its first flight. The drone spent 80 minutes in the air, reaching an altitude of 20,000 feet. That&apos;s child]]></description><pubDate>Thu, 23 May 2013 09:26:51 EST</pubDate><guid><![CDATA[http://cr4.globalspec.com/blogentry/22693]]></guid><dc:subject>Engineering News</dc:subject></item><item><title><![CDATA[Tiny Crystal Flowers Bloom in a Beaker]]></title><link><![CDATA[http://cr4.globalspec.com/blogentry/22692/Tiny-Crystal-Flowers-Bloom-in-a-Beaker?from_rss=1]]></link><description><![CDATA[From CNET News:

 			 	Scientists at Harvard have coaxed beautiful microscopic crystal flowers to form in a beaker of chemical fluid.

 			Read the whole article]]></description><pubDate>Thu, 23 May 2013 09:26:12 EST</pubDate><guid><![CDATA[http://cr4.globalspec.com/blogentry/22692]]></guid><dc:subject>Engineering News</dc:subject></item></channel></rss>