Richard G.W. Anderson (1940–2011) and the birth of receptor-mediated endocytosis

On March 19, 2011, the discipline of cell biology lost a creative force with the passing of Richard G.W. Anderson, Professor and Chairman of the Department of Cell Biology at the University of Texas Southwestern Medical School. An unabashed chauvinist for cell biology, Dick served for many years on the editorial board of The Journal of Cell Biology and the Council of the American Society for Cell Biology. He died of glioblastoma multiforme six days before his 71st birthday

Demonstration of an agroforestry system to minimize pollution hazards from land application of treated municipal sludge

Iowa has over 700 communities that generate municipal biosolids by various treatment means. These biosolids contain valuable nutrients. In this study, municipal biosolids are applied to trees, perennial grasses, and corn/soybean crops in an alley cropping (repeated tree strips combined with crops) system. The goal is to produce economical quantities of biomass and grains with reduced use of fossil fuel-based fertilizers and minimal environmental impacts

酵素の作用(退官記念最終講義)

Contains sequential images of Yale logo experimental treatment, replicate

Observations of Deep Ionospheric F-Region Density Depletions with FPMU Instrumentation and Their Relationship with the Global Dynamics of the June 22-23, 2015 Geomagnetic Storm

The magnetic storm that commenced on June 22, 2015 was one of the largest storms in the current solar cycle. During this event, ionospheric F-region density measurements from the Floating Potential Measurement Unit (FPMU) on board the International Space Station (ISS) show dramatic depletions in the post-sunset (nighttime) local time sector at equatorial latitudes starting in the main phase of the storm and persisting on several subsequent orbits into the next day. Putting these low-latitude measurements in context with the global dynamics of the storm, we will present results from simulations and observations in our efforts to better understand the effects of this storm on the different regions of the coupled ionosphere-magnetosphere. The consequences of the magnetospheric penetration electric field and their role in the occurrence of these equatorial spread F observations will be investigated through the results of the SAMI3-RCM numerical model, a coupled ionosphere-magnetosphere model with self-consistent large-scale electrodynamics. Specifically, we will investigate the transient signatures of the interplanetary magnetic field component, Bz, and its role in driving the global convection electric field and ionospheric density redistribution. Lastly, measurements from the AMPERE Birkeland currents, DMSP drift velocities and the particle flux dropouts observed from the Magnetospheric Multiscale Mission (MMS) will be correlated with the FPMU density depletions and each other. Together these observations and simulation results will be assembled to provide each regions context to the global dynamics and time evolution of the storm

"The Research Group Teaching Model": PhD students as research group leaders, mentors, and role models

MSc students in the School of Physics and Astronomy are organised into self-contained and self-supporting research groups of 6 students each. This structure authentically reflects the research group structure of the School itself. MSc students form close-knit, self-supporting communities of authentic, active, project-based learning with a strong peer-learning element. In the research group teaching model, former MSc students (current PhD students) play a central role as research group leaders, mentors, and role models. The authors have, for the past three academic years, provided essential research group leadership and teaching support. We are full members of the MSc Teaching and Learning team and are involved at every stage of the MSc core module design, development, implementation, and reflection process. In 2020/21, the research groups that we led and supported, transitioned from exclusively face-to-face to entirely remote learning, and as a result adapted the range of research topics to ensure consistent quality of teaching and learning. This poster summarises our reflections on our roles as student co-creators and developing educational practitioners

A simultaneous search for prompt radio emission associated with the short GRB 170112A using the all-sky imaging capability of the OVRO-LWA

We have conducted the most sensitive low frequency (below 100 MHz) search to date for prompt, low-frequency radio emission associated with short-duration gamma-ray bursts (GRBs), using the Owens Valley Radio Observatory Long Wavelength Array (OVRO-LWA). The OVRO-LWA's nearly full-hemisphere field-of-view ($\sim20$,$000$ square degrees) allows us to search for low-frequency (sub-$100$ MHz) counterparts for a large sample of the subset of GRB events for which prompt radio emission has been predicted. Following the detection of short GRB 170112A by Swift, we used all-sky OVRO-LWA images spanning one hour prior to and two hours following the GRB event to search for a transient source coincident with the position of GRB 170112A. We detect no transient source, with our most constraining $1\sigma$ flux density limit of $650~\text{mJy}$ for frequencies spanning $27~\text{MHz}-84~\text{MHz}$. We place constraints on a number of models predicting prompt, low-frequency radio emission accompanying short GRBs and their potential binary neutron star merger progenitors, and place an upper limit of $L_\text{radio}/L_\gamma \lesssim 7\times10^{-16}$ on the fraction of energy released in the prompt radio emission. These observations serve as a pilot effort for a program targeting a wider sample of both short and long GRBs with the OVRO-LWA, including bursts with confirmed redshift measurements which are critical to placing the most constraining limits on prompt radio emission models, as well as a program for the follow-up of gravitational wave compact binary coalescence events detected by advanced LIGO and Virgo.Comment: 14 pages, 5 figures, ApJ submitte