Conference Session

Innovations in Teaching Physics or Engineering Physics

Collection

2010 Annual Conference & Exposition

Authors

Teresa Larkin, American University

Tagged Divisions

Engineering Physics & Physics

finalvelocity was a maximum at the point of impact with the water (and could be calculated using the constant acceleration equations ifthe falling distance or falling time was known).In physics, the term momentum (a vector) is used to describe “mass in motion.” Momentum can be found from: p = m × v,with units of kg-m/s. This looks a lot like a Newton, doesn’t it? We know that 1 N is equivalent to 1 kg-m/s2. Read on to see theconnection … When the eggs fell, their momentum changed from a zero initial value (pi = 0) to some final value (pf). Again, wecould calculate vf if we knew the falling distance or time. We could write this change in momentum as

Conference Session

Chemical Engineering Education: Upperclass Years

Collection

2010 Annual Conference & Exposition

Authors

Lisa Bullard, North Carolina State University; David Ollis, North Carolina State University

Tagged Divisions

Chemical Engineering

and the company/agency that offers it. The student must researchthe host company and write a single page summary of the company, size, location(s),employment, and main products and services. In addition, a literature and database searchshould identify recent activities of the company, including current business, technical and legalsuccesses/problems. This activity prepares the students to be more active in a subsequent mockinterview with the course instructor.We position the resume/corporate profile and mock interview writing assignments early in thesemester, so they aid students preparing for the Engineering Career Fair as well as corporateinterviewing on campus for summer intern, co-op, and permanent positions

Conference Session

New Learning Paradigms II

Collection

2010 Annual Conference & Exposition

Authors

Chandra Austin, Utah State University

Tagged Divisions

Educational Research and Methods

States is becoming more diverse 6, globalization hasmade it disadvantageous to continue to foster inequality of educational opportunity along ethniclines. A hazardous cycle has been created, reinforcing the idea that African American studentsare better suited for manual than for academic pursuits. The National Academy of Engineering(NAE), an honorific organization of engineers that advises the government on issues concerningengineering, states that “if the U. S. is to maintain economic leadership and be able to sustain itsshare of high-technology jobs, it must prepare for a new wave of change”7. This new wave ofchange refers to the education of more minority students in engineering as the minoritypopulation increases in order to ensure global

Conference Session

Engaging Students in Learning

Collection

2010 Annual Conference & Exposition

Authors

HuiRu Shih, Jackson State University; Wei Zheng, Jackson State University; Tzusheng Pei, Jackson State University; Gordon Skelton, Jackson State University; Evelyn Leggette, Jackson State University

Tagged Divisions

Engineering Technology

. Page 15.769.10Bibliography:1. National Center for Education Statistics, (2006). “Contexts of Postsecondary Education Indicator 45,” .2. Boylan, A. (2004). “The Charge to Conference Participants,” Proceeding of Invention and Impact: Building Excellence in Undergraduate Science, Technology, Engineering and Mathematics (STEM) Education, National Science Foundation, pp.357-360.3. Panaoura, A. and Philippou, G. (2003). “The Construct Validity of an Inventory for the Measurement of Young Pupils’ Metacognitive Abilities In Mathematics”. In N. A. Pateman, B. J. Doherty, and J. Zilliox (Eds.), Proc. 27th Conf. of the Int. Group for the Psychology of Mathematics Education, Vol. 3, pp. 437-444.4. Pape, S. J., Bell, C. V. and Yetkin, I. E

Conference Session

New Trends in ECE Education

Collection

2010 Annual Conference & Exposition

Authors

Wookwon Lee, Gannon University; Sreeramachandra K. Mutya, Gannon University; Kirankumar Palthi, Gannon University

Tagged Divisions

Electrical and Computer

embedded in the signal transmittedfrom an antenna array. In this scheme, each mobile node with an omni-directional, single-element antenna estimates the AOT based on one (or more than one) signature signal(s)transmitted from the fixed node equipped with an antenna array. The mobile node then furtherestimates its distance from the fixed node based on the RSS of the signature signal to ultimatelybe able to pin-point its location in the polar coordinates where the fixed node is assumed to be atthe origin. Page 15.868.2Although our work on a prototype of an indoor positioning system exploiting AOT will need tobe continued to the next stage, up to the

Conference Session

Technical Papers

Collection

2010 Annual Conference & Exposition

Authors

Dana Denick, Drexel University; Jay Bhatt, Drexel University; Bradley Layton, Drexel University (Eng.)

Tagged Divisions

Engineering Libraries

students. Paper presented at the 30th ASEE/IEEE Frontiers in Education Conference. Kansas City, MO.4. Gadia V., R. Patel, S. Roy, R. Singh, N. Venkatesh, S. Lunagaria, and B.E. Layton. 2005. An educational model of an atomic force microscope. The Nanotechnology Group 4(7): 1-8.5. Gadia, V. S. Roy, N. Venkatesh, S. Lunagaria, R. Patel, and B.E. Layton. 2005. Towards nanotechnology for all. News from the Bottom 1(2): 1-7.6. Layton, B.E., L. Jablonowski, R. Kirby, and N. Lampe. 2007. Bicycle infrastructure development strategy for suburban commuting. ASME Insternational Mechanical Engineering Congress and Exposition. Seattle, WA.7. Edzan, N.N. 2007. Tracing information literacy of computer science undergraduates: A content

Conference Session

Accreditation and Continuous Quality Improvement -- What the Experts Are Saying!

Collection

2010 Annual Conference & Exposition

Authors

Stephen Ressler, United States Military Academy

Tagged Divisions

Civil Engineering

Page 15.209.13 Licensure and Professional Practice,” 2007. Accessed at http://www.asce.org/pressroom/news/policy_details.cfm?hdlid=15, January 7, 2010.7. ASCE. Civil Engineering Body of Knowledge for the 21st Century: Preparing the Civil Engineer for the Future, Reston, VA, 2004.8. Ressler, S. J. “Progress on Raising the Bar—New Civil Engineering Accreditation Criteria,” Proceedings of the 2006 Annual Conference of the American Society for Engineering Education, June 2006.9. Levels of Achievement Subcommittee of CAP3. “Levels of Achievement Applicable to the Body of Knowledge Required for Entry into the Practice of Civil Engineering at the Professional Level,” ASCE, September 2004. Accessed at http://www.asce.org

Conference Session

Past and Future of Manufacturing Education

Collection

2010 Annual Conference & Exposition

Authors

C. Norman, Applied Research Associates, Inc

Tagged Divisions

Manufacturing

remarkablein any country seeking to industrialize. But in China, it carried special force”. However, when we think of innovation, are we overlooking something, is it justinnovation in the narrow context of new inventions? If we accept the broader definitionof innovation, “…act or process of inventing or introducing something new”, we reallymay be on to something. In other words we don’t have to invent a new widget to beinnovative, we might simply improve (optimize) the widget’s design, performance,durability, and manufacturing process. Many manufacturing processes have changed verylittle since the mid 1900’s. While there have been significant advances in manufacturing,most of the focus has been on process automation, Information Technology (IT

Conference Session

Design in the First Year

Collection

2010 Annual Conference & Exposition

Authors

Noelle Comolli, Villanova University; William Kelly, Villanova University; Qianhong Wu, Villanova University

Tagged Divisions

First-Year Programs

. Page 15.1205.6The Design Project The students are able to apply their newly gained engineering theory and organphysiology to participate in hands-on experiments throughout the course. Early on, they wereexposed to a simple pumping system in which they could take pressure and flow measurements,and apply their newly acquired fluid dynamics knowledge. Throughout the course, the studentsgained valuable group work and laboratory experience when they analyzed and designed theirown kidney-dialysis systems. The project given to the students was in three parts, as follows: 1. Students will design and build their own dialysis circuit, with the goal of maximizing removal of salt from the blood (Kg/s) while removing < 5% of the liquid

Conference Session

Developing Young MINDS in Engineering - Part I

Collection

2010 Annual Conference & Exposition

Authors

Elyce Winters, Stony Brook University; Imin Kao, Stony Brook University; Jennifer Dellaposta, SUNY Stony Brook College of Engineering and Applied Sciences; Christine Szaraz, SUNY Stony Brook College of Engineering and Applied Sciences

Tagged Divisions

Minorities in Engineering

12References1. Aleven, Vincent, McLaren, Bruce M., Koedinger, Kenneth R. (2006) Toward Computer- Based Tutoring of Help-Seeking Skills. In Karabenick, Stuart A. and Newman, Richard S. (Eds.), Help Seeking in Academic Settings Goals, Groups, and Contexts. (pp. 259- 296) Mahwah, N.J: Lawrence Erlbaum.2. Alexitch, Louise R. (2006) Help Seeking and the Role of Academic Advising in Higher Education. In Karabenick, Stuart A. and Newman, Richard S. (Eds.), Help Seeking in Academic Settings Goals, Groups, and Contexts. (pp. 175- 202)Mahwah, N.J: Lawrence Erlbaum.3. Amenkhienan, C. and Kogan, L. (2004) Engineering students' perceptions of academic activities and support services: factors that influence their academic

Conference Session

Aerospace Technical Session

Collection

2010 Annual Conference & Exposition

Authors

Kenneth Van Treuren, Baylor University; Daniel Kirk, Florida Institute of Technology; Tein-min Tan, Drexel University; Sridhar Santhanam, Villanova University

Tagged Divisions

Aerospace

percentage difference between showing answers to 18 key questions associated with answers supplied by new engineers and supervisors, Boeing’s ‘Desired Attributes of an Engineer’ normalized by supervisor response score Table 1 Figure 3 Summary Supervisors (S) – New Engineers (NE) Both Agree - Attribute New Engineers Not – Need More Skills Adequate

Conference Session

Innovations in Civil Engineering Education I

Collection

2010 Annual Conference & Exposition

Authors

Brock Barry, United States Military Academy; Jeffrey Braun, United States Military Academy; Mark DeRocchi, United States Military Academy

Tagged Divisions

Civil Engineering

the model to several independent study projectscompleted or on-going currently. Specifically, the model was used to evaluate 11 independentstudy projects that were authorized and completed during the 2008-2009 academic year, as wellas 8 independent study projects authorized and on-going during the 2009-2010 academic year.All independent study projects within the D-C&ME are executed under the requirements of acontract prepared collectively at the start of the academic year by the Cadets, faculty member(s)acting as the project advisor(s), and the course director responsible for oversight of allindependent study projects. The authors utilized only those contracts to evaluate the projectsusing the model. None of the authors were involved with

Conference Session

Teaching Mechanical Systems: What's New

Collection

2010 Annual Conference & Exposition

Authors

Camilla Saviz, University of the Pacific; Said Shakerin, University of the Pacific

Tagged Divisions

Mechanical Engineering

. and Oreovicz, Teaching Engineering, McGraw-Hill, Inc, NY, 1993.19. ExCEEd Teaching Workshop Seminars, 2008. http://www.asce.org/exceed20. Lowman, J., Mastering the Techniques of Teaching, 2nd ed., Jossey Bass, NY, 2005.21. Aref, H., Hutzler, S., and Weaire, D., “Toying with Physics,” Euro Physics News, Vol. 38, No. 3, pp. 23-26,200722. Guemez, J., Fiolhais, C. and Fiolhais, M., “Toys in Physics Lectures and Demonstrations – A Brief Review,”Physics Education, Vol. 44, No. 1, pp. 53-64, 200923. Turner, R. C., “Toys in Physics Teaching: Cartesian Diver,” American Journal of Physics, Vol. 51, No. 5, pp.475-476, 198324. Connolly, W., “An Automated Cartesian Diver Apparatus,” The Physics Teacher, p. 51, January 198925. Graham, R. M., “An Extremely

Conference Session

Contemporary Issues in Chemical Engineering Education

Collection

2010 Annual Conference & Exposition

Authors

Milo Koretsky, Oregon State University

Tagged Divisions

Chemical Engineering

2003 American Society for Engineering Education Annual Conference & Exposition.2. Gal, I. and J.B. Garfield (Eds.). 1997. The Assessment Challenge in Statistics Education. IOS Press.3. Posner, G. J., K.A. Strike, P.W. Hewson, and W.A. Gertzog. 1982. Accommodation of a scientific conception: toward a theory of conceptual change. Science Education. 66 (2):211–227.4. Vygotsky, Lev S. 1978. Mind in society: Development of higher psychological processes. Edited by Cole, M., John-Steiner, V., Scribner, S., Souberman, E. Cambridge, MA: Harvard University Press.5. Bransford, J., A. Brown, and R. Cocking (Eds.). 1999. How people learn: Brain, mind, experience, and school (Report of the National Research Council

Conference Session

Mentoring Graduate Students, Diversity, and Assessment

Collection

2010 Annual Conference & Exposition

Authors

Lisa Frehill, Self employed consultant; Amanda Lain, Freelance Consultant; Catherine Didion, National Academy of Engineering

Tagged Divisions

Graduate Studies

Postdocs in S&E”. These data are collected from institutions(not individuals as the dataset name might imply), and often provided by the institutionalresearch office, the same entity that completes many institutional data reports, including the(IPEDS) Integrated Postsecondary Education Data System reports for the National Center forEducation Statistics (NCES). For the sake of simplicity, we present data separately by genderwithin three race-ethnicity and citizenship groups. The URM group consists of U.S. citizens andpermanent residents who were members of three underrepresented minority groups: AfricanAmericans, American Indians and Alaska Natives, and Hispanics. At NMSU, the vast majorityof URMs are of Hispanic descent with small numbers of

Conference Session

Aerospace Technical Session

Collection

2010 Annual Conference & Exposition

Authors

Narayanan Komerath, Georgia Institute of Technology

Tagged Divisions

Aerospace

-Off Gross Weight (TOW).• Use a Wing Loading (W/S) from benchmarking, and find planform area S. Use airport gate or other commonsense constraints, or again benchmarking, to fix span, hence find aspect ratio.• For a selected cruise altitude and speed, find the lift and induced drag coefficients.• Guess a value for low speed zero-lift drag coefficient. Hence find total cruise drag, and speed for minimum drag. Find cruise L/D.• Starting with a thumb-rule (typically, that installed sea level static thrust is 30% of TOW, and that the plane must take off with 1 engine out), select a suitable engine and number of engines.• For the selected engine, find thrust-specific fuel consumption from published data, and estimate thrust at

Conference Session

Chemical Engineering Education: Underclass Years

Collection

2010 Annual Conference & Exposition

Authors

David Silverstein, University of Kentucky; Margot Vigeant, Bucknell University; Donald Visco, Tennessee Technological University; Donald Woods, McMaster University

Tagged Divisions

Chemical Engineering

variety. That variety is based on the fundamental difference in philosophy as to whetheryear 1 has common content for all branches of engineering or discipline specific programs begin inyear 1. For the former, many imaginative ways have been introduced to allow students to gain an Page 15.658.2understanding of the uniqueness of the disciplines.This summary considers eight options (with the school code in brackets for the school using thisoption): 1. Common year 1 with no engineering exposure through courses; basic math and sciences, 0% of responders 2. Common year 1 with required common engineering course(s) with no explicit

Conference Session

Administering First-Year Programs

Collection

2010 Annual Conference & Exposition

Authors

Russell Korte, University of Illinois, Urbana-Champaign; David Goldberg, University of Illinois, Urbana

Tagged Divisions

First-Year Programs

AC 2010-1351: STUDENTS AS THE KEY TO UNLEASHING STUDENTENGAGEMENT: THE THEORY, DESIGN, & LAUNCH OF A SCALABLE,STUDENT-RUN LEARNING COMMUNITY AT XXRussell Korte, University of Illinois, Urbana-Champaign Russell Korte is an assistant professor in Human Resource Education and a Fellow with the iFoundry at the University of Illinois at Urbana-Champaign.David Goldberg, University of Illinois, Urbana David E. Goldberg is Jerry S. Dobrovolny Distinguished Professor in Entrepreneurial Engineering and Co-Director of the Illinois Foundry for Innovation in Engineering Education. He is author of Genetic Algorithms in Search, Optimization, and Machine Learning (Addision-Wesley, 1989) and The

Conference Session

Project-based Learning and Other Pedagogical Innovations

Collection

2010 Annual Conference & Exposition

Authors

Steven Fleishman, Western Washington University

Tagged Divisions

Multidisciplinary Engineering

this type of analysisduring their future careers. The QFD matrix is set up with critical customer requirements listed in acolumn with their associated priority ranking (1-5 with 1’s being low; 5’s high). Potential designsolutions or aspects that could assist with meeting the requirements are listed in a row that isperpendicular to the requirements. Relationship matrix points are assigned to each of the cells that linka requirement to a solution (0,1,3,9 with 0’s being low; 9’s high), in order to determine if a potentialdesign solution can address multiple requirements. A technical difficulty rating is assigned based onthe ease of implementation (1-5 with 1 being easy), and objective targets are established as benchmarkgoals. In keeping with

Conference Session

Student Learning

Collection

2010 Annual Conference & Exposition

Authors

Dianne Raubenheimer, North Carolina State University; Eric Wiebe, North Carolina State University; Chia-Lin Ho, North Carolina State University

Tagged Divisions

Educational Research and Methods

application domain. When presented with a problem, they are able to select the appropriate tools(s), seek the necessary information, and present a solution. The regularly used technical skills are committed to memory, and external information resources are not needed in these cases. More complex problems and problems with multiple possible solution paths for which they have to evaluate the quality of the different solution paths will create difficulties for the individual. Overall intellectual capability may be a limiting factor. Fluency The individual has extensive knowledge

Conference Session

Aerospace Technical Session

Collection

2010 Annual Conference & Exposition

Authors

Edward Crawley, MIT; Robert Niewoehner, United States Naval Academy; Jean Koster, University of Colorado, Boulder

Tagged Divisions

Aerospace

Conference Session

Knowing our Students, Faculty, and Profession

Collection

2010 Annual Conference & Exposition

Authors

Matthew Holsapple, University of Michigan; Donald Carpenter, Lawrence Technological University; Janel Sutkus, Carnegie Mellon University; Cynthia Finelli, University of Michigan; Kelley Walczak, University of Michigan; Trevor Harding, California Polytechnic State University

Tagged Divisions

Educational Research and Methods

Conference Session

How to Get Published: Tips from Journal Editors

Collection

2010 Annual Conference & Exposition

Authors

Bevlee Watford, Virginia Tech

Tagged Divisions

Women in Engineering

of quality, not falling within the scopeof the journal, lack of assessment data, etc.) it will be rejected. Those manuscripts not rejectedenter the review process, and are distributed to an associate editor (AE) on the basis of thetechnical area of the manuscript. Each manuscript is assigned at least three (3) reviewers. Aminimum of two (2) reviews must be performed before a decision can be taken. Once thesereviews are in hand, the AE prepares a preliminary decision, if necessary giving requirementsand recommendations to be met by the author(s). The EIC reviews the preliminary decision, editsit as necessary, and communicates the decision to the author(s). This process continues withrevisions that are submitted until a satisfactory manuscript

Conference Session

Standards For Future Engineering Practitioners

Collection

2010 Annual Conference & Exposition

Authors

Charlotte Erdmann, Purdue University

Tagged Divisions

New Engineering Educators

associations and professional societies,government agencies, national standards bodies, and international standards agencies.” Hardingand McPherson (2009) 7 describe the present sphere of standards organizations in his ASEEpaper.Two surveys describe the libraries’ best practices for standards. The original plan to do a surveydid not appear necessary after finding these two surveys. Both surveys cover large academiclibraries. Brian S. Mathews (2006)8 wrote about “top engineering schools” while Lorraine F.Pellack (2004)9did a survey of 34 libraries that are members of the prestigious Association forResearch Libraries (ARL). In 2003, Pellack’s survey indicated that there are many librariesdoing special ordering with format half of the libraries buying

Conference Session

Engineering Technology Progress Reports: Part I

Collection

2010 Annual Conference & Exposition

Authors

William Loendorf, Eastern Washington University; Donald Richter, Eastern Washington University; Danny Teachman, Eastern Washington University

Tagged Divisions

Engineering Technology

departments, organizations,and stakeholders was challenge at times. After merging all of the accumulated informationgathered from multiple sources into a design specification, the construction and testing phasesproceeded as scheduled. During this project many other products were identified that requiredesign modifications to make them more usable by people with the widest possible range ofabilities. Redesigning these products using the concepts of universal design will become the nextstep for this project.Bibliography1. Burgstahler, S. (2008). Universal Design of Instruction (UDI): Definition, Principles, and Examples. Retrieved from http://www.washington.edu/doit/Brochures/Academics/instruction.html2. Burgstahler, S. E., & Cory, R. C

Conference Session

ELD Poster Session

Collection

2010 Annual Conference & Exposition

Authors

David Hubbard, Texas A&M University

Tagged Divisions

Engineering Libraries

for the content analysis was subjective, but did point to the emphasison information literacy, information/reference services, collections and novel databases. Whiletextual analysis was limited in terms of results, it did provide further support for theclassification analysis based on word and phrase frequencies of the paper titles. A future studymight apply a more rigorous textual analysis methodology (and software) to obtain topichierarchies and to perform more sophisticated analyses.Further work could compare these results to other LIS publications in the field of science and Page 15.177.13engineering librarianship.References1. Tiew, S

Conference Session

Design Projects in Mechanical Engineering I

Collection

2010 Annual Conference & Exposition

Authors

Garrett Clayton, Villanova University; James O'Brien, Villanova University; Kenneth Kroos, Villanova University; Amy Fleischer, Villanova University

Tagged Divisions

Mechanical Engineering

College in Memphis, TN, where he served as Student Section Advisor and Chair of the Memphis – Midsouth Section of ASME. In 1982, Ken joined Villanova University where he teaches thermodynamics and a wide variety of other courses. He currently serves as Assistant Department Chair for the Mechanical Engineering Department. Ken is the author of over fifteen publications in the fields of fluid mechanics, heat transfer, engineering education and computer graphics for flow visualization. Ken has performed research in computer graphics for the U. S. Army Ballistics Research Lab in Aberdeen, MD. He has also done consulting work for a number of companies in the Memphis and Philadelphia areas. Ken is a

Conference Session

International Division Poster Session

Collection

2010 Annual Conference & Exposition

Authors

Claudio Brito, Council of Researches in Education and Sciences; Melany Ciampi, Organization of Researches in Environment, Health and Safety

Tagged Divisions

International

number of 3rd gradestudents it does not assure the increase of students in engineering and technology areas. Howeverit is an issue for further discussions.7. Distance Learning Experience – A History of more than 50 years.Brazilian Distance Learning Experience dates back form the 40’s when two initiatives have to bementioned as pioneer projects on distance education in the world: Brazilian government startedthe “Universidade do Ar” (The University of Air), which was the transmission by radio of firstgrade program. The target was to provide basic education for workers and people of remoteplaces of the country. The other initiative is the one of "Instituto Universal Brasileiro" anotherinstitute that has done a very good work teaching by distance

Conference Session

NSF Grantees Poster Session

Collection

2010 Annual Conference & Exposition

Authors

Emad Habib, University of Louisiana, Lafayette; Carloina Cruz-Neira, University of Louisiana at Lafayette; Yuxin Ma, University of Louisiana at Lafayette; Douglas Williams, University of Louisiana at Lafayette

. Theobservatory and its learning modules can be introduced in engineering and earth scienceshydrology courses at both the undergraduate and graduate levels Acknowledgement Support for this work was provided by the National Science Foundation's Course,Curriculum, and Laboratory Improvement (CCLI) program under Award No. DUE-0737073. 7. Bibliography 1. NRC (1991): Opportunities in the Hydrologic Sciences, National Academy Press, Washington, D.C., 348 p. 2. Wagener, T., Weiler, M., McGlynn, B., Gooseff, M., Meixner, T., Marshall, L., McGuire, K. and McHale, M. (2007): Taking the pulse of hydrology education. Hydrological Processes, 21, 1789-1792. 3. Nash, J. E., Eagleson, P. S., Phillip, J. R., and van der Molen, W. H. (1990

Conference Session

BME Laboratory and Project Experiences

Collection

2010 Annual Conference & Exposition

Authors

Sarah Pierce, Cumberland University; Amanda Lowery, Vanderbilt University; Charleson Bell, Vanderbilt University; Todd Giorgio, Vanderbilt University

Tagged Divisions

Biomedical

approximately 2.5 mL. To synthesize gold NPs, 1.0 mMhydrogen tetrachloroaurate (III) trihydrate was added dropwise into 30 ml of sodiumborohydride, swirling the tube occasionally, until a pink or purple color appeared. The finalvolume of silver nitrite used was approximately 2.5 mL. Both NP suspensions were Page 15.900.5characterized by UV-Vis spectroscopy (Nanodrop ND3300) and DLS. DLS was conducted on aMalvern Nano Series Zetasizer with a 633 nm laser. The duration of each scan was 60 s and 3scans were acquired.NP Application to CellsOn day 1, cells were rinsed once with 700 l of phosphate buffered saline (PBS) and 700 l offresh cell culture media was