317 research outputs found
Astronomy Without a Telescope
No full textCreated by author Nick Strobel, "Astronomy Notes" is an educational resource for introductory astronomy classes for undergraduates. This section describes: the celestial sphere, coordinate systems, the motion of the stars. There are also sections describing: time, the seasons, time zones, the phases of the moon, solar eclipses, lunar eclipses, and the motions of the planets
In situ study of hydrogen silsesquioxane dissolution rate in salty and electrochemical developers
No full textIn order to better characterize the development of the electron-beam resist hydrogen silsesquioxane (HSQ), the authors used a quartz crystal microbalance (QCM) to study its rate of dissolution in situ. The authors determined the effect of both salt concentration and applied electric potential on the development rate of HSQ. The development rates were measured by spinning HSQ directly onto a quartz crystal resonator, and then developing in a QCM microfluidic module. In order to more directly observe the effect of electric potentials on the HSQ development rate, a film of HSQ was partially cross-linked in an O2 plasma asher and then developed in the QCM flow module with a salt-free NaOH solution. As the partially cross-linked HSQ slowly developed, electric potentials were applied and removed from the crystal allowing the observation of how the development rate increased upon the application of a positive electric potential. The increased development rate caused by both the addition of salt ions and a positive electric potential suggests that the rate may be limited by a build-up of negative charge on the HSQ.QN/Quantum NanoscienceApplied Science
sj-docx-1-tag-10.1177_17562848231218555 – Supplemental material for Long-term outcomes of cyclosporin induction and ustekinumab maintenance combination therapy in patients with steroid-refractory acute severe ulcerative colitis
No full textSupplemental material, sj-docx-1-tag-10.1177_17562848231218555 for Long-term outcomes of cyclosporin induction and ustekinumab maintenance combination therapy in patients with steroid-refractory acute severe ulcerative colitis by Francesco Vitali, Timo Rath, Entcho Klenske, Anna-Lena Vögele, Ingo Ganzleben, Sebastian Zundler, Deike Strobel, Carol Geppert, Arndt Hartmann, Markus F. Neurath and Raja Atreya in Therapeutic Advances in Gastroenterology</p
sj-docx-2-tag-10.1177_17562848231218555 – Supplemental material for Long-term outcomes of cyclosporin induction and ustekinumab maintenance combination therapy in patients with steroid-refractory acute severe ulcerative colitis
No full textSupplemental material, sj-docx-2-tag-10.1177_17562848231218555 for Long-term outcomes of cyclosporin induction and ustekinumab maintenance combination therapy in patients with steroid-refractory acute severe ulcerative colitis by Francesco Vitali, Timo Rath, Entcho Klenske, Anna-Lena Vögele, Ingo Ganzleben, Sebastian Zundler, Deike Strobel, Carol Geppert, Arndt Hartmann, Markus F. Neurath and Raja Atreya in Therapeutic Advances in Gastroenterology</p
The Development of Inpatient Initiation and Follow-up of Home Mechanical Ventilation in Germany
No full textDiagnostic Endoscopic Ultrasound in Pancreatology: Focus on Normal Variants and Pancreatic Masses
No full textBackground: Endoscopic ultrasound (EUS) is a main tool in gastroenterology for both diagnosis and exclusion of pancreatic pathology. It allows minimally invasive assessment of various diseases or anatomic variations affecting the pancreas also with the help of new Doppler technologies, elastography, contrast-enhanced imaging including post hoc image processing with quantification analyses, three-dimensional reconstruction, and artificial intelligence. EUS also allows interventional direct access to the pancreatic parenchyma and the retroperitoneal space, to the pancreatic duct, pancreatic masses, cysts, and vascular structures. Summary: This review aimed to summarize new developments of EUS in the field of pancreatology. We highlight the role of EUS in evaluating pancreatic pathology by describing normal anatomic variants like pancreas divisum, pancreatic lipomatosis, pancreatic fibrosis in the elderly and characterizing pancreatic masses, both in the context of chronic pancreatitis and within healthy pancreatic parenchyma. EUS is considered the optimal imaging modality for pancreatic masses of uncertain dignity and allows both cytological diagnosis and histology, which is essential not only for neoplastic conditions but also for tailoring therapy for benign inflammatory conditions. Key Messages: EUS plays an indispensable role in pancreatology and the development of new diagnostic and interventional approaches to the retroperitoneal space and the pancreas exponentially increased over the last years. The development of computer-aided diagnosis and artificial intelligence algorithms hold the potential to overcome the obstacles associated with interobserver variability and will most likely support decision-making in the management of pancreatic disease
Replication Data for: Analytical model for bio-reactive transport in underground methanation reactors
No full textData for the reproduction of the paper Analytical model for bio-reactive transport in underground methanation reactors published in Springers Transport in Porous Media. The repository contains the relevant source code to reproduce the results and the comparison of the analytical solution and the numerical simulation in DuMux
Data for: Benchmark Study for the Simulation of Underground Hydrogen Storage Operations
No full textThis benchmark study establishes an underground hydrogen storage (UHS) scenario to evaluate the capabilities of various simulators to predict hydrogen-related processes.
The scenario itself comprises a semi-artificial grid representing typical sandstone formations. The gas storage is operated with one well in the formation center. Initially, the formation is saturated with natural gas in a hydrostatic equilibrium. A periodic pressure-controlled injection of hydrogen-containing gas achieves a transformation from a gas reservoir to a UHS. Afterward, four regular storage cycles composing three months of injection and production with idle times are performed. This study considers two cases varying in hydrogen concentration blended to the natural gas stream (10% and 80% H2).
The benchmark scenario is provided in Schlumberger Eclipse simulation format, including the relevant files such as the grid, properties, and schedule. Additionally, the commercial simulator Schlumberger Eclipse and the open-source simulator DuMux were compared in a first commit. The corresponding results are part of the current repository to compare futural commits better.
Therefore, we invite you to simulate this study by yourself and compare the present results with other open-source or commercial simulators. An updated version of the DuMux source code can be accessed on the
Gitlab repository
Christoph Wulf / Birgit Althans / Kathrin Audehm / Gerald Blaschke / Nino Ferrin / Ingrid Kellermann / Ruprecht Mattig / Sebastian Schinkel: Die Geste in Erziehung, Bildung und Sozialisation. Ethnographische Feldstudien. Wiesbaden: VS Verlag für Sozialwissenschaften 2011 (297 S.) [Rezension]
No full textRezension von: Christoph Wulf / Birgit Althans / Kathrin Audehm / Gerald Blaschke / Nino Ferrin / Ingrid Kellermann / Ruprecht Mattig / Sebastian Schinkel: Die Geste in Erziehung, Bildung und Sozialisation. Ethnographische Feldstudien. Wiesbaden: VS Verlag für Sozialwissenschaften 2011 (297 S.; ISBN 978-3-5311-7733-5; 39,95 EUR)
Predictors of health-related quality of life in COPD-patients on long-term non-invasive ventilation
No full text- …
