Publications by authors named "T H Kramer"
Article Synopsis
- The study focuses on detecting multijet signatures from proton-proton collisions at a high energy of 13 TeV, analyzing a dataset totaling 128 fb^{-1}.
- A special data scouting method is utilized to pick out events with low combined momentum in jets.
- This research is pioneering in its investigation of electroweak particle production in R-parity violating supersymmetric models, particularly examining hadronically decaying mass-degenerate higgsinos, and it broadens the limits on the existence of R-parity violating top squarks and gluinos.
The diradicaloid electronic structure of dialumenes: a benchmark study at the Full-CI limit.
Phys Chem Chem Phys
December 2024
Article Synopsis
- Multiply-bonded main group compounds from groups 13-15, like dialumenes, are gaining attention for their unique metal-metal bonding and potential applications in catalysis and small molecule activation.
- The study focuses on the simplest dialumene, AlH, analyzing its electronic structure and bond dissociation energy using advanced quantum chemistry methods to set a reference for other computational techniques.
- The results show that while single-reference coupled cluster theory can effectively capture the diradical character of dialumene, density functional methods struggle with accuracy, though some approaches like non-hybrid TPSS yield better results than high-percentage hybrids.
The first search for soft unclustered energy patterns (SUEPs) is performed using an integrated luminosity of 138 fb^{-1} of proton-proton collision data at sqrt[s]=13 TeV, collected in 2016-2018 by the CMS detector at the LHC. Such SUEPs are predicted by hidden valley models with a new, confining force with a large 't Hooft coupling. In events with boosted topologies, selected by high-threshold hadronic triggers, the multiplicity and sphericity of clustered tracks are used to reject the background from standard model quantum chromodynamics.
View Article and Find Full Text PDFIn this study using a discordant, xenogeneic, transplant model we demonstrate the functionality and safety of the first stent-based bioartificial pancreas (BAP) device implanted endovascularly into an artery, harnessing the high oxygen content in blood to support islet viability. The device is a self-expanding nitinol stent that is coated with a bilayer of polytetrafluoroethylene that forms channels to hold islets embedded in a hydrogel. We completed a 1-month study in the nondiabetic swine model (N = 3) to test the safety of the device and to assess islet functionality after device recovery.
View Article and Find Full Text PDFArticle Synopsis
- The study analyzes the formation of contrails from ammonia-powered engines compared to traditional jet fuel engines, focusing on thermodynamic processes like supersaturation and ice nucleation.
- It calculates how moisture from exhaust affects atmospheric conditions, determining the potential for contrail visibility based on temperature and humidity changes.
- Findings suggest that ammonia contrails are less dense but can form at lower altitudes and last longer due to higher moisture content, despite not producing soot which typically aids contrail formation.