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Science

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plasma propulsion, Plasma, neutralizer, exhaust beam, Radio Frequency, radio-frequency self-bias effect, spectrscopy, James Dedrick, Andrew Gibson, Dmytro Rafalskyi, Ane Aanesland, University of York, CNRS - Ecole Polytechnique, Physics of Plasmas

Neptune: Neutralizer-Free Plasma Propulsion

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The most established plasma propulsion concepts are gridded-ion thrusters that accelerate and emit a larger number of positively charged particles than those that are negatively charged. To enable the spacecraft to remain charge-neutral, a “neutralizer” is used to inject electrons to exactly balance the positive ion charge in the exhaust beam. However, the neutralizer requires additional power from the spacecraft and increases the size and weight of the propulsion system. Researchers are investigating how the radio-frequency self-bias effect can be used to remove the neutralizer altogether, and they report their work in this week’s Physics of Plasmas.

Science

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irradiated material, neutron radiation, glassy materials, disordered atomic network, Quartz, Vitrification, Glasses, Nuclear Waste, disordering, N.M. Anoop Krishnan, Bu Wang, Yann Le Pape, Gaurav Sant, Mathieu Bauchy, University of California, Los Angeles, Oak Ridge National Laboratory, The Journal Of Chemical Physics

Atomic Structure of Irradiated Materials Is More Akin to Liquid Than Glass

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Materials exposed to neutron radiation tend to experience significant damage. At the nanoscale, these incident neutrons collide with a material’s atoms, which then collide with each other. The resulting disordered atomic network resembles those seen in some glassy materials, which has led many in the field to use them in nuclear research. But the similarities between the materials may not be as useful as previously thought, according to this week’s The Journal of Chemical Physics.

Medicine

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Statement from Eleanor D. Lederer, MD, FASN, President, American Society of Nephrology on Proposed FY 2018 budget

ASN Denounces Administration’s Proposed Massive Cuts for the National Institutes of Health – “Would Disrupt Medical Research”

Medicine

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Wolters Kluwer, Psychiatry, Mental Health

Wolters Kluwer Publishes 10th Edition Kaplan and Sadock’s Comprehensive Textbook of Psychiatry

Wolters Kluwer, a leading global provider of information and point of care solutions for the healthcare industry, is pleased to announce the 10th Edition of Kaplan and Sadock’s Comprehensive Textbook of Psychiatry. This marks the 50th anniversary of this cornerstone text, which covers the full range of psychiatry and mental health.

Science

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Solar Eclipse, Astronomy, Stars, SUN, moon, Eclipse, Sky, Astrophyics

University of Redlands Expert: Let Someone Else Take the Photos—How to View the U.S. August 2017 Total Solar Eclipse

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Life

Social and Behavioral Sciences

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diaphragmatic breathing, Orofacial Pain, Psychology, Violence Against Women, Chronic Pain, smartphone app

University of Kentucky Researchers Help Victims of Violence Manage Chronic Pain with Mobile App for Breathing Techniques

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By providing UK Orofacial Pain Clinic patients with a smartphone application that teaches diaphragmatic breathing, a team from the UK Center for Research on Violence Against Women hypothesizes victims of sexual and physical violence will learn to regulate their body’s sympathetic (flight or fight) tone and manage their pain.

Science

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Cybersecurity, Autonomous cars, connected vehicles

Dynamic Watermarking Could Help Solve Security Issues in Connected Vehicles

Working in the Texas A&M’s Cyberphysical Systems Laboratory, Dr. P.R.Kumar, University Distinguished Professor in the Department of Electrical and Computer Engineering, along with graduate students Bharadwaj Satchidanandan and Woo-Hyun Ko, have applied the theory of dynamic watermarking of sensors in autonomous vehicles to prevent malicious attacks.

Science

Business

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self driving cars, Autonomous Vehicles, Safety Testing

New Way to Test Self-Driving Cars Could Cut 99.9 Percent of Validation Costs

Mobility researchers at the University of Michigan have devised a new way to test autonomous vehicles that bypasses the billions of miles they would need to log for consumers to consider them road-ready

Life

Social and Behavioral Sciences

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WVU Expert Says Terrorism Is ‘Not a Muslim Thing’

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Political and economic unrest, not religion or ethnicity, are often the causes of terrorist attacks like the one in Manchester, England. The response should not just center on increasing military action and security reinforcement , according to a West Virginia University expert in social and psychological responses to terrorism and other threats.

Science

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soot particles, Carcinogen, Carcinogenic Chemicals, gasoline direct injection, Combustion Research, Engine exhaust, analytical chemistry

Carcinogenic Soot Particles From Petrol Engines

First, diesel vehicles tainted their reputation with soot particles, then high nitric oxide emissions. So are owners of new gasoline cars environmentally friendly? Not always, says a new study led by Empa scientists: some direct-injection gasoline engines emit just as many soot particles as unfiltered diesel cars did in the past. Particle filters can remedy this.







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