University Of Notre Dame Research Articles

Supersonic Cavity-Based Flow Control Using a Quasi-DC Discharge

The Quasi-DC (Q-DC) discharge is studied as an active flow control authority on a rear-facing cavity in a supersonic duct by creating an oblique shockwave that impinges the cavity. This geometry simulates the geometry of a typical scramjet flameholding scheme. The tests were performed at the University of Notre Dame in the SBR-50 supersonic blowdown rig with dried air at M=2. Schlieren imaging is used to view the flow field with and without the Q-DC discharge in operation. A significant change in the flow field structure is observed. Pressure sensors detect a pressure increase throughout the entire rear-facing cavity while the Q-DC discharge is operating. This reveals that the cavity redistributes the pressure increase from the shockwave as a result of the flow within the cavity being subsonic. As a result of this pressure absorption and redistribution, the impinging shockwave created by the Q-DC is almost completely absorbed. This absorption is confirmed by the schlieren images. The data reveal that the discharge power is the dominating influence, as compared to electrode/discharge geometry, on the pressure increase produced in the cavity. There is a nearly linear correlation between the power of the discharge and the pressure increase produced directly behind the discharge, in the cavity, and on the ramp of the cavity (to varying magnitudes). It is suggested that the 11 electrode system may be slightly more effective than the 7 electrode system.

Plasma-Assisted Control of Mach-2 Flowfield over Ramp Geometry

This study examined the effect of Reynolds number on plasma-assisted flow control ahead of a compression ramp geometry in Mach-2 supersonic flow. The experiments were conducted in the supersonic wind tunnel SBR-50 at the University of Notre Dame. Stagnation temperature and pressure were varied as T0=294-500K and P0=1-3bar to attain Reynolds number ranging from 3.4×105-2.2×106. Ramp pressure measurements, schlieren visualization, and high-speed camera imaging were used for the evaluation of plasma-assisted flow control effects. A linear dependency was found between the ramp pressure change per averaged plasma power and Reynolds number.

14th International Conference on Fluid Control, Measurements and Visualization (FLUCOME 2017)

Peter GarnavichProfessor, Department Chair Astrophysics/Cosmology Physics University of Notre DameTitle:The Accelerating Universe and the Discovery of Dark EnergySummary. One of the most dramatic scientific revolutions of the last fifty years is the discovery that the rate of expansion of the universe is accelerating. The source of acceleration is thought to be a mysterious “dark energy” that makes up 3/4 of the content of the universe, but more exotic causes are possible. This is a story that begins with Einstein and Hubble but shifts to two research teams racing to find the ultimate fate of the universe using exploding stars and new detector technology.Bio. Peter Garnavich is a Professor and Chair of Physics at the University of Notre Dame. Previously he was a Research Fellow at the Harvard-Smithsonian Center for Astrophysics and received a M.Sc. from the Massachusetts Institute of Technology and a Ph.D. from the University of Washington. His research interests include cataclysmic variable stars, supernovae and cosmology. He is co-recipient of the 2007 Gruber Prize in Cosmology and the 2015 Breakthrough Prize in Fundamental Physics. Garnavich was a key member of the “High-Z” team that discovered the universal expansion rate is accelerating. The discovery of the accelerating universe was awarded the 2011 Nobel Prize in Physics.William SaricDistinguished Professor of Aerospace Engineering George Eppright ‘26 Chair in EngineeringTexas A&M University Aerospace EngineeringTitle:Flight experiments on discrete roughness element technology for laminar flow controlWilliam S. Saric has been Professor of Aerospace Engineering at Texas A&M University since January 2005. He received his PhD in Mechanics from the Illinois Institute of Technology in 1968 and has held appointments at Sandia Laboratories (Atomic and Fluid Physics, 1963-1966, 1968-1975), Virginia Polytechnic Institute and State University (Engineering Science and Mechanics, 1975-1984), Tohoku University, Japan (Aeronautics and Astronautics, 1991-1992), and Arizona State University (Mechanical and Aerospace Engineering, 1984-2005).He is a registered Professional Engineer in Virginia and was an Aerospace Engineering Evaluator for ABET.He is a Fellow of AIAA, APS, and ASME. He received the AIAA Fluid Dynamics Award in 2003, the G.I. Taylor Medal from SES in 1993, the Scientific Achievement Award from AGARD (NATO) in 1996, and the Alumni Research Award from V.P.I.&S.U in 1984. In 2006, he was elected to the National Academy of Engineering for “contributions to the fundamental understanding and control of shear-flow and boundary-layer transition”.He has established two major wind tunnel research facilities and a flight research center at Texas A&M University and was the Director of the AFOSR/NASA National Center for Hypersonic Laminar-Turbulent Transition Research.Most recently, he has conducted experimental, and flight research on stability, transition, and control of two-dimensional and three-dimensional boundary layers for subsonic aircraft, supersonic aircraft and reentry vehicle applications.Gennaro CardoneProfessor, Dr., Chair of Aerospace Engineering Study CourseUniversità degli Studi di Napoli “Federico II”, Italy Department of Industrial Engineering – Aerospace divisionTitle:Thermo‐fluid‐dynamic analysis of innovative synthetic jet devicesSummary: Synthetic jets are largely used, especially in the field of electronic cooling; indeed their heat transfer performances have been widely investigated and some of the work performed at University of Naples Federico II is herein described. Heat transfer coefficients have been enhanced through the design of innovative synthetic jet devices; in particular, twin synthetic jets, multi orifice nozzles, chevron exit nozzles are considered. Obviously, the heat transfer performances of both the classic and innovative devices are strictly related to their impinging flow field on the surface to be cooled. In this work the behavior of innovative impinging synthetic jets is experimentally investigated by using Particle Image Velocimetry (PIV) and IR thermography leading to both time average and phase average flow velocity and heat transfer measurements. Three-dimensional coherent vortex structures, time-averaged and phase-averaged means, as well as turbulent statistics of flow fields and wall heat transfer data are presented and discussed.Bio. Born in Naples (Italy) on 1963. Graduated in Mechanical Engineering with summa cum laude (1988). PhD in Aerospace Engineering (1991). Assistant professor (1992). Associate professor (1998). Actual position: Full Professor of Fluid Mechanics (2010) and Chair of the Aerospace engineering study courses, at the University of Naples Federico II, Department of industrial engineering, aerospace division. Scientific interests: two-beam and reference beam interferometry; velocimetry techniques such as PIV, Stereo-PIV and Tomo-PIV and their developments; heat transfer measurements with the infrared thermography technique, particularly focused on heat flux sensors and thermal image restoration; steady and unsteady natural convection; boundary layer diagnostics; transition detection and flow field visualization from subsonic to hypersonic flow regimes; free and impinging synthetic jets; swirling jets; aerodynamic heating and its thermal visualization; thermal measurements in investment casting.

14th International Conference on Fluid Control, Measurements and Visualization (FLUCOME 2017)

PrefaceThe 14th International Conference on Fluid Control, Measurements and Visualization (FLUCOME 2017) was hosted by the Department of Aerospace and Mechanical Engineering on the campus of the University of Notre Dame, USA, in October 8-12, 2017. This well established Conference was collocated with the Notre Dame Workshop on Plasma-Based Flow Control.The FLUCOME conference was contemplated as a continuation of the previous thirteen meetings. The 1st FLUCOME symposium was organized by Professor Yasuki Nakayama (1916-2016) in Tokyo, Japan (1985). The 2nd symposium was held in Sheffield, UK (1988), the 3rd in San Fransisco, CA, USA (1991), the 4th in Toulouse, France (1994), the 5th in Hayama, Japan (1997), the 6th in Sherbrooke, Canada (2000), the 7th in Sorrento (2003), the 8th in Chengdu, China (2005), the 9th in Tallahassee, FL, USA (2007), the 10th in Moscow, Russia (2009); the 11th in Keelung/Kenting, Taiwan (2011); 12th in Nara, Japan (2013); and the 13th in Doha, Qatar (2015).The scientific program covered a wide range of topics, including Flow/Fluid Control, Flow Measurements, Non-Intrusive Methods, Visualization, Multiphase Flows, etc. The Workshop on Plasma-Based Flow Control (Plasma Aerodynamics) was organized as an entirely invited one-day meeting. Three keynote, fourteen invited and over fifty oral papers were presented during four Conference days. A special session was dedicated to a memory of Professor Nakayama, the FLUCOME founder and an outstanding leader in the international visualization community, who passed away in 2016.This volume of IOP Journal Conference Series: Material Science and Engineering includes 21 selected papers presented in sections “Flow/Fluid Control”, “Measurements”, “Visualization”, and “Multiphase Flow”. We believe these manuscripts well represent the Conference topics and will raise readers’ interest to the area considered.We would like to thank the members of both the International Steering Committee and the Local Organizing Committee, who greatly helped in a challenging process of the meeting organization. We are also pleased to thank the Academic Conferences Office in the University of Notre Dame and the Engineering Communications and Marketing Group in the College of Engineering for their everyday assistance in the Conference preparation. Finally, we are grateful to the College of Engineering and the Institute of Flow Physics and Control for the financial support of FLUCOME 2017.Thomas Corke and Sergey Leonov, FLUCOME 2017 Chairs

14th International Conference on Fluid Control, Measurements and Visualization (FLUCOME 2017)

14th International Conference on Fluid Control, Measurements, and Visualization October 8-12, 2017, University of Notre Dame, Notre Dame, IN 46556, USAThe Department of Aerospace and Mechanical Engineering, Institute of Flow Physics and Control of the University of Notre Dame, USA, hosts the 14th International Conference on Fluid Control, Measurements, and Visualization (FLUCOME) in the famous campus of Notre Dame, Indiana, USA.This well-established Conference will be collocated with the Notre Dame Workshop on Plasma-Based Flow Control.The FLUCOME conference is contemplated as a continuation of the previous thirteen meetings. The 1st FLUCOME symposium was held in Tokyo, Japan (1985), the 2nd in Sheffield, UK (1988), the 3rd in San Fransisco, CA, USA (1991), the 4th in Toulouse, France (1994), the 5th in Hayama, Japan (1997), the 6th in Sherbrooke, Canada (2000), the 7th in Sorrento (2003), the 8th in Chengdu, China (2005), the 9th in Tallahassee, FL, USA (2007), the 10th in Moscow, Russia (2009); the 11th in Keelung/Kenting, Taiwan (2011); 12th in Nara, Japan (2013); and the 13th in Doha, Qatar (2015).The 14th FLUCOME provided a forum for researches and scholars to exchange the latest scientific and technical achievements in multiple disciplines, including engineering, physics, chemical sciences, astrophysics, and meteorology. Conference topics include fluid processes across a wide range of scales: micro-scale biomechanical engineering flows, small-scale machine flows, large-scale civil and environmental fluid flows, and global-scale geophysical and meteorological fluid flows.

Experiences with the ALICE Mesos infrastructure

Apache Mesos is a resource management system for large data centres, initially developed by UC Berkeley, and now maintained under the Apache Foundation umbrella. It is widely used in the industry by companies like Apple, Twitter, and Airbnb and it is known to scale to 10 000s of nodes. Together with other tools of its ecosystem, such as Mesosphere Marathon or Metronome, it provides an end-to-end solution for datacenter operations and a unified way to exploit large distributed systems. We present the experience of the ALICE Experiment Offline & Computing in deploying and using in production the Apache Mesos ecosystem for a variety of tasks on a small 500 cores cluster, using hybrid OpenStack and bare metal resources. We will initially introduce the architecture of our setup and its operation, we will then describe the tasks which are performed by it, including release building and QA, release validation, and simple Monte Carlo production. We will show how we developed Mesos enabled components (called “Mesos Frameworks”) to carry out ALICE specific needs. In particular, we will illustrate our effort to integrate Work Queue, a lightweight batch processing engine developed by University of Notre Dame, which ALICE uses to orchestrate release validation. Finally, we will give an outlook on how to use Mesos as resource manager for DDS, a software deployment system developed by GSI which will be the foundation of the system deployment for ALICE next generation Online-Offline (O2).

Scaling up a CMS tier-3 site with campus resources and a 100 Gb/s network connection: what could go wrong?

The University of Notre Dame (ND) CMS group operates a modest-sized Tier-3 site suitable for local, final-stage analysis of CMS data. However, through the ND Center for Research Computing (CRC), Notre Dame researchers have opportunistic access to roughly 25k CPU cores of computing and a 100 Gb/s WAN network link. To understand the limits of what might be possible in this scenario, we undertook to use these resources for a wide range of CMS computing tasks from user analysis through large-scale Monte Carlo production (including both detector simulation and data reconstruction.) We will discuss the challenges inherent in effectively utilizing CRC resources for these tasks and the solutions deployed to overcome them.

25th Biennial Conference on Chemical Education, July 29–August 2, 2018, University of Notre Dame, South Bend, Indiana

The 25th Biennial Conference on Chemical Education (BCCE), will be held July 29–August 2, 2018, hosted by the University of Notre Dame in South Bend, Indiana. BCCE provides opportunities for interacting with chemistry instructors of all levels in formal and informal settings. Join colleagues for professional growth and social networking, and discover how Chemical Education is Golden.

Analytical Division presents awards

The ACS Division of Analytical Chemistry has announced the 2017 recipients of its awards, which recognize important contributions to the major scientific aspects of the discipline. The awards were presented during a symposium at the fall ACS national meeting in Washington, D.C. Paul W. Bohn, Arthur J. Schmitt Professor of Chemical & Biomolecular Engineering and professor of chemistry and biochemistry at the University of Notre Dame, is the winner of the ACS Division of Analytical Chemistry Award in Electrochemistry. Bohn’s research interests include electrochemical nanotechnology, integrated nanofluidics and microfluidics for personal diagnostics, and correlated chemical imaging. Matthew F. Bush, assistant professor of chemistry at the University of Washington is the recipient of the Arthur F. Findeis Award for Achievements by a Young Analytical Scientist, sponsored by Altria. Bush’s research focuses on the development of mass-spectrometry-based approaches for elucidating the structures, assembly, and dynamics of protein complexes. Robert M. Corn, professor

University's missteps give dismissed student another chance

The Successful RegistrarVolume 17, Issue 8 p. 11-11 Breach of contract University's missteps give dismissed student another chance First published: 15 September 2017 https://doi.org/10.1002/tsr.30355Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Abstract Case name: Doe v. University of Notre Dame, No. 3:17CV298 (N.D. Ind. 05/08/17). Volume17, Issue8October 2017Pages 11-11 RelatedInformation

Enlightenment and Catholicism in Europe: A Transnational History. Edited by Jeffrey D. Burson and Ulrich L. Lehner . South Bend, Ind: University of Notre Dame, 2014. x + 482 pp. $46.00 paper.

Enlightenment and Catholicism in Europe: A Transnational History. Edited by Jeffrey D. Burson and Ulrich L. Lehner . South Bend, Ind: University of Notre Dame, 2014. x + 482 pp. $46.00 paper. - Volume 86 Issue 3

Gödel’s Natural Deduction

This is a companion to a paper by the authors entitled “Godel on deduction”, which examined the links between some philosophical views ascribed to Godel and general proof theory. When writing that other paper, the authors were not acquainted with a system of natural deduction that Godel presented with the help of Gentzen’s sequents, which amounts to Jaśkowski’s natural deduction system of 1934, and which may be found in Godel’s unpublished notes for the elementary logic course he gave in 1939 at the University of Notre Dame. Here one finds a presentation of this system of Godel accompanied by a brief reexamination in the light of the notes of some points concerning his interest in sequents made in the preceding paper. This is preceded by a brief summary of Godel’s Notre Dame course, and is followed by comments concerning Godel’s natural deduction system.

University's missteps give dismissed student another chance

Student Affairs TodayVolume 20, Issue 6 p. 9-9 Due process University's missteps give dismissed student another chance First published: 22 August 2017 https://doi.org/10.1002/say.30379Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Abstract Case name: Doe v. University of Notre Dame, No. 3:17CV298 (N.D. Ind. 05/08/17). Volume20, Issue6September 2017Pages 9-9 RelatedInformation

Special Issue Dedicated to Prof. Daoben Zhu's 75th Birthday

First of all, I, together with my colleagues and friends, would like to send our best wishes to Professor Daoben Zhu on the occasion of his 75th birthday. Professor Zhu began his chemistry studies at East China University of Science and Technology (ECUST) in 1965 and graduated in 1968. He then joined the Institute of Chemistry, Chinese Academy of Sciences as an assistant professor, and was promoted to associate professor in 1985 and professor at 1987. He was a visiting scholar at the Max-Planck Institute for Medical Research in Heidelberg, Germany, from 1977 to 1979. He again worked as a visiting scientist at the same Max-Planck Institute in 1985 and 1986. Professor Zhu is one of the pioneers in the area of molecular materials and devices in China. He has been the director of the CAS Key Laboratory of Organic Solids since its establishment. He and his co-workers have made remarkable contributions to interdisciplinary cutting-edge research areas including organic conductors and superconductors, functional Langmuir–Blodgett films, fullerene chemistry and physics, light-emitting materials and devices, organic semiconductors and devices, and organic thermoelectronic materials and devices. These research achievements have provided in-depth understanding of the electronic processes and related phenomena in organic solids, thus boosting research into molecular materials and devices. Professor Zhu has published two books and more than 1000 papers in scientific journals, which have received more than 24 000 citations, and has an H-index of 90. His research accomplishments have been well recognized by the scientific community. He has received National Natural Sciences of China second-class prizes five times, in 1988, 2002, 2004, 2007 and 2014. He was the winner of the Chinese Chemical Society—the China Petroleum and Chemical Corporation Chemical Contribution Award in 2008, and he won the Tan Kah Kee Science Award in chemistry in 2012. Professor Zhu was elected as a Chinese Academy of Sciences Academician in 1997 and a member of the World Academy of Sciences for the advancement of science in developing countries in 2009. In 2014 and 2015, Professor Zhu was selected by Thomson Reuters as one of the world's most influential scientific minds both in chemistry and materials science. Apart from doing scientific research, Professor Zhu has made great contributions to the administration and management of scientific research in China. Among the administration positions he has held, he was the director of the Institute of Chemistry, Chinese Academy of Sciences from 1992 to 2000, vice president of the National Natural Science Foundation of China from 2000 to 2007, president of the Chinese Chemical Society from 1994 to 1997, and vice president of the Chinese Materials Society from 2001 to 2005. He was the vice chairman of the second, fourth and fifth advisory committees of the National Basic Research Program of China (973 Program). He is now the vice chairman of the Academic Committee of Chinese Academy of Sciences (CAS) and the committee chair of the Academic Division of Chemistry, CAS. Professor Zhu has continuously supported and actively promoted scientific exchanges and collaborations between Chinese scientists and leading scientists across the world. We publish this special issue to celebrate the 75th birthday of Professor Zhu and express sincere thanks to him for his continuous support over many years. This special issue collects research communications, full research papers, and reviews that cover the following topics: organic semiconductors, doping of organic semiconductors and field-effect transistors, graphdiyne and carbon ene-yne nanoribbon, photovoltaic cells and photodetectors, bioelectronics, and organic nonlinear optical materials. We would like to take this opportunity to thank the distinguished authors who contributed to this special issue, and the editorial staff of Advanced Electronic Materials for enabling its publication. Professor Yuliang Li has worked at the Institute of Chemistry, Chinese Academy of Sciences since 1975. He was a visiting scholar in the Department of Chemistry at University of Amsterdam (The Netherlands) from 1987 to 1989, was a visiting professor at the Radiation Lab at University of Notre Dame (USA) from August 1998 to March 1999, and worked in the Department of Chemistry at the University of Hong Kong from September 1999 to February 2000. His research interests include the growth of low-dimensional and two-dimensional carbon nanostructures, covalently and non-covalently assembled molecular materials, and supramolecular chemistry.

University's missteps give dismissed student another chance

The Successful RegistrarVolume 17, Issue 7 p. 11-11 Breach of contract University's missteps give dismissed student another chance First published: 17 August 2017 https://doi.org/10.1002/tsr.30345Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Abstract Case name: Doe v. University of Notre Dame, No. 3:17CV298 (N.D. Ind. 05/08/17). Volume17, Issue7September 2017Pages 11-11 RelatedInformation

Redesigning Business Schools: At the Interface of a World of Wicked Problems

Business schools are facing collapsing boundaries among organizations, emergence of new business forms shaped by digital connectivity, and 'wicked' messes. Currently, business school scholarship, research, and curricula are largely geared towards a world of large corporations, stability, and relatively resolvable problems that no longer reflect a ubiquitously connected reality. We question how business school scholars can better address emergent needs and problems 'at the interfaces' where business schools themselves and organizations studied find themselves. Organizer Ian Mitroff (University of California, Berkeley) will argue that 'wicked messes' need to be foundational in business school curricula and scholarship. Sandra Waddock (Boston College) will discuss how wicked messes like climate change, inequality, sustainability, and jobs creation should influence research and curricula. Anne Tsui (University of Notre Dame, former AOM President) will share the work of a group of 24 leading scholars who have developed “A Vision of Responsible Research in Business and Management&x201D; white paper. Gerald F. Davis (University of Michigan) will discuss the business scholarship/education implications of increasingly irrelevant large corporations. Stella Nkomo (University of Pretoria) will add a perspective from the global South since the current debate has emanated from the global North. Stuart Hart (University of Vermont) will argue that although most major business schools have added initiatives, centers, or programs focused on sustainability, corporate citizenship, or social entrepreneurship, these issues are still insufficiently integrated. Robert E. Quinn (University of Michigan) will serve as discussant and synthesizer for the panel.

Student-Athlete Educational Records? The Involvement of FERPA Within Recent NCAA Division I Academic Scandals

The Family Educational Rights and Privacy Act (FERPA) was enacted in 1974 to protect the privacy of student academic records (FERPA, 2015). FERPA restricts the disclosure without consent of certain student records, files, documents, and other materials managed by educational institutions (U.S. Department of Education, 2004). Athletic departments have been criticized for expanding these rules to protect themselves in times of academic scandals (Escoffery, 2014; Riepenhoff & Jones, 2009; Salzwedel & Ericson, 2003). This study investigated the use of FERPA during two recent academic scandals involving Division I universities’ athletics programs: the University of North Carolina and the University of Notre Dame. Both universities were investigated for student-athlete academic dishonesty and employed different paths when disseminating information to the public demonstrating the ambiguous and inconsistent application of FERPA. Recommendations for universities faced with implementing FERPA to protect student rec...

Some insect larvae tolerate high temperatures better during winter

Snowy winters seem to be becoming a thing of the past. As rising temperatures take an ever stronger hold, the insulating blankets of snow that kept overwintering populations of bugs and mini-beasts in various states of suspended animation through the long dark months are receding. ‘We were interested in how insects would respond to increased temperatures in the winter’, says Henry Vu from the University of Notre Dame, USA, who was curious to find out how vulnerable exposed insects might respond to relatively sultry winters when their insulating winter blanket dwindles. Specifically, Vu and his colleagues wanted to find out whether high temperatures during thaws could be close to the insects’ lethal temperatures. As many insects pass the winter buried as larvae deep in logs, Vu and PI John Duman decided to test the tolerance of the fire-coloured beetle, Dendroides canadensis, throughout the seasons to find out whether losing their winter muffler is risky.Vu ventured out into local woods to retrieve the beetle larvae from decaying logs throughout the year, even braving the elements during the polar vortex that gripped the US in January 2014: ‘We used a chisel and hammer to peel back the frozen bark of trees and chip away at the decaying wood to find our insects during the winter’, he recalls. Back in the lab, Vu placed the larvae in incubators ranging from 33 to 41°C for up to 2 days to find out how well they survived the high temperatures. In addition, he chilled some of the larvae during each of the seasons, while recording the temperatures at which they died, to find out how their low temperature tolerance varied.Fire-coloured beetles avoid freezing during the colder months by producing antifreeze compounds and Vu and Duman recorded that the insects could survive temperatures as low as −25°C during the winter, although they only survived temperatures that were a few degrees below freezing during spring and summer. However, when Vu recorded the insects’ survival rates at high temperatures, he found they were able to survive temperatures around 40.9°C during the winter but could only cope with temperatures around 36.7°C during the summer. ‘These insects can survive over a 60°C range in the winter while only surviving over approximately a 40°C range in summer’, says Vu. And when he tested the survival of the larvae of two other species – a member of the flat bark beetle family, Cucujus clavipes clavipes (which also produces antifreeze to avoid freezing), and the crane fly, Tipula trivittata (which can survive the freezing of some of their body fluids) – their high temperature resilience also seemed to increase during the winter.‘Logically, we were expecting the insects to survive higher temperatures in the summer because that's when the highest temperatures are’, says Vu. He suspects that the larvae are most at risk from overheating during the spring, when they are becoming less heat tolerant and the logs are warming as the air temperatures rise and there are fewer leaves for shade from the increasing strength of the sun.

Development of a solenoid spectrometer for nuclear astrophysical studies of fusion reactions near stellar energies

A solenoid spectrometer for nuclear astrophysics (SSNAP) has been developed to study heavy-ion fusion reactions of astrophysical importance near stellar energies. Charged particles follow helical trajectories within the strong magnetic field of a superconducting solenoid. The 12C(12C,p)23Na reaction was studied as the first measurement using the solenoid spectrometer at the University of Notre Dame within the energy range of Ec.m.=4.0 to 6.0 MeV. This experiment demonstrated that the solenoid spectrometer is able to provide outstanding capability for detection of light charged particles produced by nuclear fusion reactions having a relatively wide energy range.

New Physical Insights from a Computational Catalysis Perspective

ADVERTISEMENT RETURN TO ISSUEViewpointNEXTNew Physical Insights from a Computational Catalysis PerspectiveWilliam F. Schneider*View Author Information Department of Chemical and Biomolecular Engineering and Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States*E-mail: [email protected]Cite this: J. Phys. Chem. C 2017, 121, 29, 15491–15492Publication Date (Web):July 27, 2017Publication History Published online27 July 2017Published inissue 27 July 2017https://doi.org/10.1021/acs.jpcc.7b06535Copyright © 2017 American Chemical SocietyRIGHTS & PERMISSIONSArticle Views2177Altmetric-Citations1LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (159 KB) Get e-AlertsSUBJECTS:Catalysis,Computational modeling,Energy,Physical chemistry,Transition states Get e-Alerts