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Autumn is a beautiful season: waning days of warmth, cool nights, and dramatic color. All is blissful until the leaves fall from the trees covering the ground with a thick mass of debris. So begins the raking…or blowing.

The Invention

Although not confirmed, it widely is believed that the leaf blower was invented by Dom Quinto in the late 1950s. It originally was introduced in the United States as an agricultural sprayer, but soon manufacturers saw an opportunity to use the blower as a lawn and garden maintenance tool.

Environmental Impact

Emissions from gasoline-powered leaf blowers, noise, carbon monoxide as well as airborne particulates are common complaints of the leaf blower. To minimize some of these side-effects, the leaf blower is governed by the U.S. E.P.A. emission standards for small engines, and to counteract the noise, several American cities have ordinances restricting lawn blower usage or mandating decibel levels. In fact, Caremel-by-the-Sea and Beverly Hills banned the implement in the 1970s citing it a noise nuisance.

So don’t throw out the rake just yet.

References

Determination Particulate Emission Rates from Leaf Blowers. Report written by Dennis Fitz, David Pankratz, Sally Pederson, and James Bristow, College of Engineering-Center for Environmental Research and Technology, University of California, Riverside, CA and Gary Arcemont, San Joaquin Unified Air Pollution Control District, Fresno, CA.

Glasner, Joanna. “The Silence of the Leaf Blowers.” September 23, 2005.

Haupt, David J. & Houge, Michael S. Convertible leaf blower and vacuum. U.S. Patent 5,638,574, filed July 21, 1995 and issued June 17, 1997

Lawn and Garden (Small Gasoline) Equipment, United States Environmental Protection Agency web page

“Leaf-blower regulations nationwide,” ConsumerReports.org, September 2010

Leaf Blower Report by the California Environmental Protection Agency Air Resources Board

Outdoor Power Equipment Internal Combustion Engine-Powered Handheld and Backpack Blowers and Blower-Vacuums Safety Requirements and Performance Testing Procedures ANSI/OPEI B175.2-2012 (with A1-2013) (Source: TechStreet)

Thackery, Clinton C. and Long, Charles Keith. Backpack leaf blower. EP268444, filed May 20, 2013 and issued January 15, 2014

ALFRED NOBEL

October 21st is the birthday of the late Alfred Bernhard Nobel who lived from 1833 to 1896. He was a Swedish chemist, engineer, innovator and manufacturer.

In 1862, he started experimenting with nitroglycerin as an explosive material for oil mining. By the next year, at age 30, he obtained his first patent. A year later, he also developed and patented a detonator, or blasting cap, for triggering the explosive device. By age 40, Nobel had armament and explosives manufacturing companies around the world.

 

Ironically, in 1866, one of Nobel’s German manufacturing factories exploded. Resolved to improve the products’ safety, Nobel discovered that adding diatomaceous earth, a form of hardened algae as fine as powder, stabilizes the explosive material.

Although Nobel held over 350 different patents, his dynamite patent was his most notable invention. “Dynamite revolutionized the transportation industry by greatly facilitating the construction of roads and railways, tunnels and canals. It also played a crucial role in the modern mining industry.”¹

 

 

 

THE NOBEL PRIZE

Nobel’s wealth was derived from his manufacturing companies and from his investment in his two brothers’ oilfields along the Caspian Sea. Upon his death, Nobel left the majority of his wealth, $186 million, in a trust from which his fortune is posthumously awarded “to those who, during the preceding year, shall have conferred the greatest benefit on mankind.”²

In 1900, The Nobel Foundation was established as a private organization to administer the trust, and, in accordance with Nobel’s wishes, “The prizes for physics and chemistry shall be awarded by the Swedish Academy of Sciences; that for physiology or medical works by the Karolinska Institute in Stockholm; that for literature by the Academy in Stockholm, and that for champions of peace by a committee of five persons to be elected by the Norwegian Storting. It is my express wish that in awarding the prizes no consideration be given to the nationality of the candidates, but that the most worthy shall receive the prize, whether he be Scandinavian or not.”² Up to three people may receive the award in any given field. For example, Eric Betzig, Stefan W. Hell and William E. Moerner jointly received the 2014 Nobel Prize in Chemistry “for the development of super-resolved fluorescence microscopy.”³

REFERENCES

1. The Official Web Site of the Nobel Prize, http://www.nobelprize.org/alfred_nobel/biographical/articles/krummel/

2. The Official Web Site of Nobel Prize, http://www.nobelprize.org/alfred_nobel/will/

3. The Official Web Site of Nobel Prize, http://www.nobelprize.org/nobel_prizes/chemistry/laureates/2014/

4. Bown, Stephen R. A most damnable invention : dynamite, nitrates, and the making of the modern world. New York : T. Dunne Books, 2005. Engineering Library Q175.35 .B69 2005

In this day in 1876, Alexander Bell demonstrated the first two way telephone conversation over outdoor wires. (October 9, 1876)

Timeline of the Telephone:

• 1667: Robert Hooke created an acoustic string telephone that convey sound over a taut extended wire by mechanical vibrations.
• 1849: Antonio Meucci demonstrated a communicating device, it is disputed whether or not this is an electromagnetic telephone, but it is said to involve direct transmission of electricity into the users body.
• 1861: Johann Philipp Reis of Germany managed to transfer voice electrically over a distance of 340 feet with his Reis telephone. Reis used his telephone to transmit the phrase “The horse does not eat cucumber salad.” This phrase is hard to understand acoustically in German so he used it to prove that speech can be recognized successfully at the receiving end.
• 1871: Antonio Meucci files a patent caveat – a statement of intention to file a patent application for a Sound Telegraph. It does not describe and electromagnetic telephone.
• 1872: Elisha Gray founds the Western Electric Manufacturing Company.
• July 1873: Thomas Edison notes variable resistance in carbon grains due to pressure, builds a rheostat based on the principle, but abandons it because of its sensitivity to vibration.
• July 1874: Alexander Graham Bell first conceives the theoretical concept for the telephone while vacationing at his parents’ farm near Brantford, Canada. Alexander Melville Bell records notes of his son’s conversation in his personal journal.
• 29 December 1874: Gray demonstrates his musical tones device and transmitted “familiar melodies through telegraph wire” at the Presbyterian Church in Highland Park, Illinois.
• 11 February 1876: Elisha Gray invents a liquid transmitter for use with a telephone, but does not build one.
• 14 February 1876, about 9:30 am: Gray or his lawyer brings Gray’s patent caveat for the telephone to the Washington, D.C. Patent Office.
• 14 February 1876, about 11:30 am: Bell’s lawyer brings to the same patent office Bell’s patent application for the telephone. Bell’s lawyer requests that it be registered immediately in the cash receipts blotter.
• 14 February 1876, about 1:30 pm: Approximately two hours later Elisha Gray’s patent caveat is registered in the cash blotter. Although his caveat was not a full application, Gray could have converted it into a patent application and contest Bell’s priority, but did not do so because of advice from his lawyer and his involvement with acoustic telegraphy. The result was that the patent was awarded to Bell.
• 7 March 1876: Bell’s U.S. Patent, No. 174,465 for the telephone is granted.
• 10 March 1876: Bell first successfully transmits speech, saying “Mr. Watson, come here! I want to see you!” using a liquid transmitter as described in Gray’s caveat, and Bell’s own electromagnetic receiver.
• 16 May 1876: Thomas Edison files first patent application for acoustic telegraphy for which U.S. patent 182,996 was granted October 10, 1876.
• 10 August 1876: Alexander Graham Bell makes the world’s first long distance telephone call, about 6 miles between Brantfordand Paris, Ontario, Canada.

• 9 October, 1876: Bell and Watson demonstrated the first two-way conversation over outdoor wires. Their call was made between Boston and Cambridge.

• 9 July 1877: The Bell Telephone Company, a common law joint-stock company, is organized by Alexander Graham Bell’s future father-in-law Gardiner Greene Hubbard, a lawyer who becomes its first president.
• 6 October 1877: the Scientific American publishes the invention from Bell – at that time still without a ringer.
• Early months of 1879: The Bell Telephone Company is near bankruptcy and desperate to get a transmitter to equal Edison’s carbon transmitter.
• 19 February 1880: The photophone, also called a radiophone, is invented jointly by Alexander Graham Bell and Charles Sumner Tainter at Bell’s Volta Laboratory.[15][16] The device allowed for the transmission of sound on a beam of light
• 4 September 1884: Opening of telephone service between New York and Boston (235 miles)
• 26 February 1914: Boston-Washington underground cable commenced commercial service
• 25 January 1915: The first transcontinental (coast-to-coast) telephone call (3600 miles), with Thomas Augustus Watson at 333 Grant Avenue in San Francisco receiving a call from Alexander Graham Bell at 15 Dey Street in New York City, facilitated by a newly invented vacuum tube amplifier
• 21 October 1915: First transmission of speech across the Atlantic Ocean by radiotelephone from Arlington, VA to Paris, France
• 1919: The first rotary dial telephones in the Bell System installed in Norfolk, Virginia. Telephones that lacked dials and touch-tone pads were no longer made by the Bell System after 1978.
•  1919: AT&T conducts more than 4,000 measurements of people’s heads to gauge the best dimensions of standard headsets so that callers’ lips would be near the microphone when holding handsets up to their ears
• 25 April 1935: First telephone call around the world by wire and radio
• 1947: December, W. Rae Young and Douglas H. Ring, Bell Labs engineers, proposed hexagonal cells for provisioning of mobile telephone service.
• 1948: Phil Porter, a Bell Labs engineer, proposed that cell towers be at the corners of the hexagons rather than the centers and have directional antennas pointing in 3 directions.
• 1955: the laying of trans-Atlantic cable TAT-1 began – 36 circuits, later increased to 48 by reducing the bandwidth from 4 kHz to 3 kHz
• 1960’s: Bell Labs developed the electronics for cellular phones
• 1961: Initiation of Touch-Tone service trials
• 1970: ESS-2 electronic switch
• 1970: Amos E. Joel, Jr. of Bell Labs invented the “call handoff” system for “cellular mobile communication system” (patent granted 1972)
• 3 April 1973: Motorola employee Martin Cooper placed the first hand-held cell phone call to Joel Engel, head of research at AT&T’s Bell Labs, while talking on the first Motorola DynaTAC prototype.
• 1978: Bell Labs launched a trial of the first commercial cellular network in Chicago using Advanced Mobile Phone System (AMPS).
• 1982: FCC approved AT&T proposal for AMPS and allocated frequencies in the 824-894 MHz band
• 1982: Caller ID patented by Carolyn Doughty, Bell Labs
• 1987: ADSL introduced
• 1988: First transatlantic fiber optic cable TAT-8, carrying 40,000 circuits
• 1990: analog AMPS was superseded by Digital AMPS.
• 1993: Telecom Relay Service available for the disabled
• 11 June 2002: Antonio Meucci is recognized for “…his work in the invention of the telephone” (but not “…for inventing the telephone”) by the United States House of Representatives, in United States HRes. 269.
• 21 June 2002: The Parliament of Canada responds by passing a motion unanimously 10 days later recognizing Alexander Graham Bell as the inventor of the telephone.
• 2005: Mink, Louisiana finally receives traditional landline telephone service (one of the last in the United States).

Books in the Engineering Library:

• Gertner, Jon. 2012. The idea factory: Bell Labs and the great age of American innovation. Engineering  Library  TK5102.3.U6  G47 2012
• Petruzzellis, Thomas. 2009. Telephone projects for the evil genius. Engineering  Library  TK9951  .P48 2009
• Shulman, Seth. 2008. The telephone gambit : chasing Alexander Graham Bell’s secret. Engineering  Library  TK6018.B4  S58 2008  
• Freeman, Roger L.  2004. Telecommunication system engineering. Engineering  Library  TK5103  .F68 2004
• Chorafas, Dimitris N.  1984. Telephony : today and tomorrow. Engineering  Library  TK5101  .C496 1984
•   

 

WHAT IS BUILDING GREEN? The terms building green and green building practice typically refer to a method of designing and constructing buildings that increase the efficiency with which buildings normally use resources while reducing the negative impact the building has on its natural environment.¹(p.2) For any building to be considered “green architecture,” it must, to some degree, be sustainable, ecological, and performative.²

HISTORY OF GREEN Green building is not a new construction practice. Historically, people built structures using locally available, or indigenous, materials such as clay and logs. Walls made of adobe, rammed earth, stone or brick acted as insulation to cool or to heat the interior. Sod roofs also insulated the home as well as providing vegetative habitat for small animals. Roof overhangs prevented water intrusion while also providing shade from the summer sun. However, the idea of green became popular in the 1970’s when oil and gas shortages raised prices. During this period, research to find alternative energy sources such as geothermal, solar and wind expanded dramatically in order to reduce the demand upon fossil fuels. In 1975, President Gerald Ford signed into law the United States Energy Policy & Conservation Act, which became the basis for many new energy codes and incentive programs. BUILDING CODES The International Code Council, which is responsible for the The International Building Code (IBC), the model for all building regulations, developed the International Green Construction Code (IgCC) in conjunction with the American Institute of Architects (AIA), ASTM International and the USGBC. The IgCC governs the impact of buildings and structures on the environment and promotes safe and sustainable construction practices. The newest edition of the IgCC was released in the Spring of 2012. It is to be revised every three years to ensure that the IgCC reflects the latest advances in technology and construction materials.¹(p.11) PROGRAMS In addition to building codes, programs are created in order to incentivize green construction. For example, in 1992, the EPA and the DOE initiated ENERGY STAR®, a government labeling program to identify and promote energy-efficient products to reduce greenhouse gas emissions.¹(p.5) Later, in 2005, the U.S. Green Building Council (USGBC) developed the Leadership in Energy and Environmental Design (LEED) rating system. Under this system, buildings are classified as Certified Silver, Gold, or Platinum depending on compliance levels within categories such as integrative process, sustainable sites, water efficiency, matierals & resources, energy & atmosphere, location & transportation, innovation and design as well as indoor environmental quality.³ LEED CONSTRUCTION The University of Iowa is committed to LEED principles and maintains a minimum standard of Certified LEED Silver for new construction and major renovations. To date, the campus has eight certified LEED buildings of which two have received the highest award of Platinum. By 2016, the UI campus is projected to have four additional LEED certifications. For example, the University’s goal is to achieve Certified LEED Gold for the new Art Building. Watch a Live View of Art Building Replacement Construction. LEARN MORE To learn more about green building, visit the Lichtenberger Engineering Library. View the Exhibit Case displaying examples of a green roof and sustainable building materials such as bamboo flooring and solar panels. Also, borrow one of the many books on the topic. REFERENCES 1. Kulczyk, Peter. Building Code Basics: Green Based on the 2012 International Green Construction Code. Clifton Park, NY: Delmar, 2013. (Engineering Library TH880 .B85 2013) 2. Attmann, Osman. Green Architecture: Advanced Technologies and Materials. McGraw-Hill: NY, 2010, p. 41, Figure 2.2. (Engineering Library TH880 .A88 2010) 3. U.S. Green Building Council http://www.usgbc.org/leed 4. University of Iowa http://www.facilities.uiowa.edu/sustainable-initiatives/LEED.html 5. Environmental Protection Agency. Green Roofs for Stormwater Runoff Control. EPA/600/R-09/026, February, 2009. http://www.nps.gov/tps/sustainability/greendocs/epa%20stormwater-sm.pdf 6. Environmental Protection Agency. Green Building. http://epa.gov/greenbuilding

Hundreds of books have been either removed or challenged in schools and libraries in the United States every year. According to the American Library Association (ALA), there were at least 464 in 2012.  ALA estimates that 70 to 80 percent are never reported.

To celebrate, here are some books of interest in Engineering and Science that have been banned at one time or another:

• Banned in 17th Century Europe:  Any writing or discussion demonstrating the heliocentric nature of the universe.
  Writings by Physicist and Astronomer Galileo Galilei was charged and convicted of heresy by the Inquisition in 1632 for writing, “Dialogue Concerning the Two Chief World Systems” Main Library QB41 .G1356 1967
• Banned in schools in Tennessee following the Butler Act of 1925:  Books and teaching materials on Darwinian evolution theory.
  The Origin of Species by Charles Darwin  Main Library QH365 .O2 1979
• Banned in Menifee School District, California:  Dictionary banned for too explicit definition.
  Merriam-Webster’s Collegiate Dictionary   Hardin Library For Health Sci Library PE1628 W4M4 1993
• Banned through the United States: For being too accurate in its scientific initiative.
  The Golden Book of Chemistry Experiments, written in 1960 by Robert Brent and illustrated by Harry Lazarus.

 

Banned Classic Books:

According to the Office for Intellectual Freedom, at least 46 of the Radcliffe Publishing Course Top 100 Novels of the 20th Century have been the target of ban attempts.  See which books these are and learn the reasons for being banned at the following link: http://www.ala.org/bbooks/frequentlychallengedbooks/classics/reasons  

 

 

References:

• Banned Book Week.  http://www.bannedbooksweek.org/
• Baron, Dennis.  Webster’s Banned for too much sex.  http://illinois.edu/blog/view/25/20915
• Banned Books Awareness: “The Golden Book of Chemistry Experiments” http://bannedbooks.world.edu/2013/07/07/banned-books-awareness-the-golden-book-of-chemistry-experiments/ 

The Lichtenberger Engineering Library now has 2 group study rooms!

Pod 1

• Media:Scape System: Large Television allowing for up to 6 laptops to be connected at a time for easy collaboration.
• Whiteboard Wall

Pod 2

• Table with 4 chairs
• Whiteboard Wall

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Reservation Policies

2-2-2 RULES

Group spaces in the Lichtenberger Engineering Library may be reserved by sign-up posted by each room. Use of the group spaces is governed by the 2-2-2 rules.

• Two or more students are required to be present for group space use. Priority will be given to groups over individuals. Unattended items left in the room will be removed from the room and reservations will be cancelled.
• Reservations may last up to two hours. Consecutive reservations will not be permitted.
• Reservations can be made up to two days in advance.

No Show Policy

Groups have 15 minutes after the start of their reservation to arrive. If a group has not claimed their study space by that time their reservation will be cancelled.

The Lichtenberger Engineering Library has made a lot of changes over the summer!

 

Check to see what we’ve all been up to:

1.            New Tools
2.            New Study Rooms
3.            WISE Collection
4.            Library Xpress Classes
5.            New Resources (Engineering Case Studies Online, Standards, Synthesis Lectures, New DVDs)
6.            Refworks Discontinued
7.            Course Reserves
8.            Instruction & Research Support

 

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1.                New Tools

With support from the Engineering Electronics Shop & Engineering Computer Services, the Library has added 24 new tools to the Tool Library!

The Tool Library now has eyeball webcams, microphones, and 2 LabQuest data devices with 19 accessories are available for check out.   The LabQuest with the available accessories can be used for collecting and analyzing data in experiments and other hands-on projects.   For a complete list of all tools, as well as descriptions and links to user manuals, click on the Tool Library at http://guides.lib.uiowa.edu/toollibrary . Tools are arranged by category and, unless noted otherwise, can circulate for 1 week.

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2.            New Study Rooms

The Library now has 2 group study rooms!  Both rooms feature whiteboard walls and one features a media:scape system.  For more information and reservation policies, check out the following link: http://www.lib.uiowa.edu/eng/group-study-rooms/

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 3.            WISE Collection

The Library has received a generous donation from Women in Science and Engineering, check out all the new resources that have been added at: http://www.lib.uiowa.edu/giving/bookplate/?id=240

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4.            Library Xpress Classes

This semester we are adding a few new classes to the Library Xpress Series.  All sessions are open to all and will be on Wednesdays at 2:30 PM.  More information at: http://www.lib.uiowa.edu/eng/engineering-library-xpress-classes/

Series Schedule:

September 3rd  “Web of Science”—-Sara Scheib, 30 min
September 10^th  “Endnote Basic” —Steve Ostrem, 30 min
September 17^th  “Scifinder”—-Sara Scheib, 30 min
September 24th  “Company Information”—-Kim Bloedel, 30 min
October 1st  “Pubmed”—-Shane Wallace, 15 min
October 8th, “Patents”—– Kari Kozak, 15 min
October 15th, “Protein Database”—Christopher Childs, 15 min
October 22nd, “Compendex”—-Kari Kozak, 15 min
October 29th, “Standards”—-Kari Kozak, 15 min
November 5, “IEEE Xplore”—Kari Kozak, 15 min
November 12th, “Open Access”—Karen Fischer, 30 min
November 19th “Keeping up with your research”—-Kari Kozak, 15 min

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 5.            New Resources

Engineering Case Studies Online (http://purl.lib.uiowa.edu/EnginCaseStud)

Engineering Case Studies Online is a multi-media database chronicling the field’s most noteworthy failures, such as the Chernobyl Disaster, Ford Pinto Controversy, Apollo 13 and more. Designed to meet classroom and research needs across a range of engineering disciplines—such as aerospace, mechanical, nuclear, and civil—the collection brings together nuanced information about complex case studies into one database. It aims to incorporate diverse perspectives and materials, presented in a balanced way, to enable through analysis. Pulling together 250 hours of video and 50,000 pages of full-text material upon completion, the collected materials include video documentaries and primary footage, audio transcripts and witness testimony; images, maps, accident reports, blueprints, and other key archival content, monographs and articles, as well as timelines and simulations.

 

More Standards

The library has add many new standards to the standards database, TechStreet (http://purl.lib.uiowa.edu/TechStreet), as well as adding the standards produced by ASCE (http://purl.lib.uiowa.edu/asce). For more information on these standards and all other available visit: http://guides.lib.uiowa.edu/standards

 

Synthesis Lecture Series in Biomedical Engineering and General Engineering, Technology, and Mathematics Collections

Synthesis Lecture Series in Biomedical Engineering(http://www.morganclaypool.com/toc/bme/3/1 ) is comprised of 75- to 150-page publications on advanced and state-of-the-art topics that span the field of biomedical engineering, from the atom and molecule to large diagnostic equipment. Each lecture covers, for that topic, the fundamental principles in a unified manner, develops underlying concepts needed for sequential material, and progresses to more advanced topics.
General Engineering, Technology, and Mathematics Collections 1,2, and 3 (http://www.morganclaypool.com/page/getm1) are comprised of 90 Synthesis lectures from series in Energy and the Environment, General Engineering, and Electrical Engineering, Engineers, Technology, & Society, Global Engineering, and Mathematics & Statistics

 

More DVDs

Over the last year, we’ve add a variety of new DVDs to the Library.  Series include: Mythbusters, Junkyard Wars, How it’s Made, Extreme Engineering, etc. http://www.lib.uiowa.edu/eng/engineering-related-dvds/

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 6.            RefWorks Discontinued

Starting January 1, 2015 RefWorks and Write-N-Cite will no longer be available for free from the UI Libraries. We recommend current RefWorks users transfer their citations to another citation management program well in advance of December 31, 2014.  EndNote Basic (for undergraduates) and EndNote Desktop (for faculty, staff, graduate and professional students) are available for free through the UI Libraries.

Anyone who wishes to stay with RefWorks will need to purchase an individual subscription before December 31, 2014. You can then back-up and restore your references to your new account. http://guides.lib.uiowa.edu/content.php?pid=574044&sid=4733245

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7.            Course Reserves

Course Reserves are going up for the Fall Semester.  If you have not already done so and have items to put on reserve for the Fall Semester, please email the Engineering Library at lib-engineering@uiowa.edu with a list of the materials and course number.  The lists may also be brought to the Library or put into the Engineering Library’s mailbox.

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8.            Instruction & Research Support

Kari is available to provide short or class length demonstrations on a wide variety of library resources and services to students, faculty, and/or staff.  This could range from an overview of the library and services to in-depth researching strategies.  Sessions can be to individuals, small groups, lab groups, or classes. Topics that can be covered include: evaluating information, standards, patents, citations as well as Endnote or other citation software.

The Lichtenberger Engineering Library has a new database for streaming videos!

 

This database is called Engineering Case Studies Online (http://purl.lib.uiowa.edu/EnginCaseStud)

Engineering Case Studies Online is a multi-media database chronicling the field’s most noteworthy failures, such as the Chernobyl Disaster, Ford Pinto Controversy, Apollo 13 and more. Designed to meet classroom and research needs across a range of engineering disciplines—such as aerospace, mechanical, nuclear, and civil—the collection brings together nuanced information about complex case studies into one database. It aims to incorporate diverse perspectives and materials, presented in a balanced way, to enable through analysis. Pulling together 250 hours of video and 50,000 pages of full-text material upon completion, the collected materials include video documentaries and primary footage, audio transcripts and witness testimony; images, maps, accident reports, blueprints, and other key archival content, monographs and articles, as well as timelines and simulations.

 

The Lichtenberger Engineering Library announces an addition of 24 new items to the Tool Library. The tools are made available through the donations by the Engineering Electronic Shop and the Engineering Computer Services.

Various screwdrivers, wrenches, measurement devices, an eyeball webcam, and 2 LabQuest data devices with 19 accessories are some of the tools available for check out. For a complete list of all tools, as well as descriptions and links to user manuals, click on the Tool Library LibGuide at http://guides.lib.uiowa.edu/toollibrary. Tools are arranged by category and, unless noted otherwise, can circulate for 1 week.