Search results for: Christian Schmidt

Items from 1 to 20 out of 269 results

article

67‐4: Late‐News Paper: A New Semi‐transparent OLED‐on‐Silicon Microdisplay Technology Enabling New Optical Design Opportunities for Slim Near‐to‐Eye Optics

Philipp Wartenberg, Bernd Richter, Stephan Brenner, Johannes Zeltner, more

SID Symposium Digest of Technical Papers > 55 > 1 > 930 - 933

Due to their very high resolution and high level of technological maturity, OLED microdisplays are an ideal image generator for VR, AR and MR applications in near‐to‐eye optics. However, due to the silicon‐based backplane, these microdisplays have always been non‐transparent, requiring a complex optical system for integration into an optic. This has a significant impact on the weight, size and overall...

article

Robot‐based 6D bioprinting for soft tissue biomedical applications

Franziska B. Albrecht, Freia F. Schmidt, Christian Schmidt, Rainer Börret, more

Engineering in Life Sciences > 24 > 7 > n/a - n/a

Within this interdisciplinary study, we demonstrate the applicability of a 6D printer for soft tissue engineering models. For this purpose, a special plant was constructed, combining the technical requirements for 6D printing with the biological necessities, especially for soft tissue. Therefore, a commercial 6D robot arm was combined with a sterilizable housing (including a high‐efficiency particulate...

article

A practical guide to bioimaging research data management in core facilities

Christian Schmidt, Tom Boissonnet, Julia Dohle, Karen Bernhardt, more

Journal of Microscopy > 294 > 3 > 350 - 371

Bioimage data are generated in diverse research fields throughout the life and biomedical sciences. Its potential for advancing scientific progress via modern, data‐driven discovery approaches reaches beyond disciplinary borders. To fully exploit this potential, it is necessary to make bioimaging data, in general, multidimensional microscopy images and image series, FAIR, that is, findable, accessible,...

article

Investigation of TGF‐α‐overexpressing mouse hepatocytes (TAMH) cultured as spheroids for use in hepatotoxicity screening of drug candidates

Kristin Beirow, Christian Schmidt, Britta Jürgen, Rabea Schlüter, more

Journal of Applied Toxicology > 44 > 2 > 272 - 286

The immortalized mouse liver cell line TAMH has been described as a valuable tool for studying hepatotoxic mechanisms, but until now, it has only been reported to grow as a monolayer in culture. However, culturing hepatocytes as three‐dimensional (3D) spheroids has been shown to result in improved liver‐specific functions (e.g., metabolic capacity) by better mimicking the in vivo environment. This...

article

Renal impairment and mortality in patients with STEMI and cardiogenic shock/cardiac arrest

Gautam R. Shroff, Santiago Garcia, Christian Schmidt, Brynn Okeson, more

Catheterization and Cardiovascular Interventions > 102 > 2 > 179 - 190

Objectives We sought to study the association of renal impairment (RI) with mortality in ST‐segment elevation myocardial infarction (STEMI) complicated by cardiogenic shock and/or cardiac arrest (CS/CA). Methods Patients with RI (estimated glomerular filtration rate <60 mL/min/1.73 m²) were identified from the Midwest STEMI consortium, a prospective registry of four large regional programs comprising...

article

Evolutionary history of Euteliidae (Lepidoptera, Noctuoidea)

Reza Zahiri, Jeremy D. Holloway, Jadranka Rota, B. Christian Schmidt, more

Systematic Entomology > 48 > 3 > 445 - 462

We performed a molecular phylogenetic analysis on the family Euteliidae to clarify deep divergences and elucidate evolutionary relationships at the level of the subfamily, tribe, and genus. Our dataset consists of 6.3 kbp of one mitochondrial and seven nuclear DNA loci and was analysed using model‐based phylogenetic methods, that is, maximum likelihood and Bayesian inference. Based on the recovered...

article

CO₂ Conversion by Fischer‐Tropsch Synthesis Using Na‐Modified Fe Catalysts

Christian Schmidt, Sven Kureti

Chemie Ingenieur Technik > 94 > 11 > 1747 - 1755

Three Fe catalysts with different Na contents were prepared, characterized, and investigated for the CO₂‐based Fischer‐Tropsch synthesis (FTS). The FTS results clearly indicated that the selectivity towards long‐chain hydrocarbons was driven by the surface Na content, which promotes the CO dissociation and chain propagation. Additionally, it was shown that Fe₃O₄, Fe₅C₂ and Fe₇C₃ coexist during FTS,...

article

Wheat yield potential can be maximized by increasing red to far‐red light conditions at critical developmental stages

Maria Fernanda Dreccer, Alec B. Zwart, Ralf‐Christian Schmidt, Anthony G. Condon, more

Plant, Cell & Environment > 45 > 9 > 2652 - 2670

Sensing of neighbours via the Red to Far‐Red light ratio (R:FR) may exert a cap to yield potential in wheat. The effects of an increased R:FR inside the canopy were studied in dense wheat mini canopies grown in controlled environments by lowering FR. To distinguish between effects exerted by light sensing and assimilate supply, the treatments were complemented with elevated CO₂, applied between different...

article

56‐3: New Ultra Low‐Power High Brightness Microdisplays Enabling Broad Applications

Philipp Wartenberg, Andreas Fritscher, Stephan Brenner, Bernd Richter, more

SID Symposium Digest of Technical Papers > 53 > 1 > 740 - 743

This paper reports on the latest development on ultra low‐power microdisplays. Initially this architecture has been presented in a monochrome version in [4]. Due to the demand of extended applications beyond pure information displays towards situation aware notifications a new colored version has been developed with the main achievement of cutting down the pixel size by more than a factor of two to...

article

Groundwater‐surface water exchange as key control for instream and groundwater nitrate concentrations along a first‐order agricultural stream

Oscar Jimenez‐Fernandez, Marc Schwientek, Karsten Osenbrück, Clarissa Glaser, more

Hydrological Processes > 36 > 2 > n/a - n/a

Lower‐order streams (first‐ and second‐order) define the initial, landscape‐related, chemical signature of stream water in catchments. To date, first‐order streams have been perceived as predominantly draining systems, which collect water and solutes from the surrounding groundwater and surface runoff and simply mirror the chemical composition of the inputs. In this study, the impact of stream‐groundwater...

article

Increased rejection rates in kidney transplantations during the COVID‐19 pandemic

Christian Schmidt‐Lauber, Melissa Spoden, Tobias B. Huber, Christian Günster, more

Transplant International > 34 > 12 > 2899 - 2902

article

Convalescent plasma treatment for early post‐kidney transplant acquired COVID‐19

Malte A. Kluger, Jan Czogalla, Christian Schmidt‐Lauber, Sven Peine, more

Transplant Infectious Disease > 23 > 4 > n/a - n/a

article

Impact of COVID‐19 pandemic on STEMI care: An expanded analysis from the United States

Santiago Garcia, Larissa Stanberry, Christian Schmidt, Scott Sharkey, more

Catheterization and Cardiovascular Interventions > 98 > 2 > 217 - 222

Objective To evaluate the impact of COVID‐19 pandemic migitation measures on of ST‐elevation myocardial infarction (STEMI) care. Background We previously reported a 38% decline in cardiac catheterization activations during the early phase of the COVID‐19 pandemic mitigation measures. This study extends our early observations using a larger sample of STEMI programs representative of different US...

article

Seasonal and short‐term controls of riparian oxygen dynamics and the implications for redox processes

Guilherme E. H. Nogueira, Christian Schmidt, Nico Trauth, Jan H. Fleckenstein

Hydrological Processes > 35 > 2 > n/a - n/a

Riparian zones are highly‐dynamic transition zones between surface water (SW) and groundwater (GW) and function as key biogeochemical‐reactors for solutes transitioning between both compartments. Infiltration of SW rich in dissolved oxygen (DO) into the riparian aquifer can supress removal processes of redox sensitive compounds like NO₃⁻, a nutrient harmful for the aquatic ecosystem at high concentrations...

article

Extreme sleep fragmentation for 11 consecutive days and nights does not significantly alter total sleep time, and sleep stage distribution, during the continuous alpine downhill skiing world record

Mirco Gindulis, Nikolaus Netzer, Martin Burtscher, Hannes Gatterer, more

Health Promotion & Physical Activity > 2021 > 17 > 4 > 18-24

Introduction: Extreme levels of sleep deprivation, fragmentation and management, are major problems in many sportive disciplines, ultramarathons, polar or extreme altitude expeditions, and in space operations.Material and methods: Polysomnographic (PSG) data was continuously recorded (total sleep time and sleep stage distribution) in a 34-year-old male whilst performing the new world record in long-term...

article

Genomic‐wide sequencing reveals remarkable connection between widely disjunct populations of the internationally threatened bog buck moth

Julian R. Dupuis, Scott M. Geib, Christian Schmidt, Daniel Rubinoff

Insect Conservation and Diversity > 13 > 5 > 495 - 500

Rare, threatened species often suffer from habitat fragmentation, which leads to smaller populations vulnerable to negative impacts including inbreeding depression and collapse of metapopulation dynamics. Therefore, understanding the population structure and relationships of each population of a threatened species is critical for prioritising habitat conservation and reintroduction efforts. The bog...

article

Linear array detector for online diagnostics of spectral distributions at MHz repetition rates

Christopher Gerth, Günter Brenner, Michele Caselle, Stefan Düsterer, more

Journal of Synchrotron Radiation > 26 > 5 > 1514 - 1522

Free‐electron lasers (FELs) based on superconducting accelerator technology and storage ring facilities operate with bunch repetition rates in the MHz range, and the need arises for bunch‐by‐bunch electron and photon diagnostics. For photon‐pulse‐resolved measurements of spectral distributions, fast one‐dimensional profile monitors are required. The linear array detector KALYPSO (KArlsruhe Linear...

article

Sources and variability of CO₂ in a prealpine stream gravel bar

Kyle S. Boodoo, Jakob Schelker, Nico Trauth, Tom J. Battin, more

Hydrological Processes > 33 > 17 > 2279 - 2299

Gravel bars (GBs) contribute to carbon dioxide (CO₂) emissions from stream corridors, with CO₂ concentrations and emissions dependent on prevailing hydraulic, biochemical, and physicochemical conditions. We investigated CO₂ concentrations and fluxes across a GB in a prealpine stream over three different discharge‐temperature conditions. By combining field data with a reactive transport groundwater...

article

52‐2: Invited Paper: A New 0.64″ 720p OLED Microdisplay for Application in Industrial See‐Through AR HMD

Philipp Wartenberg, Bernd Richter, Stephan Brenner, Martin Rolle, more

SID Symposium Digest of Technical Papers > 50 > 1 > 717 - 720

This paper discusses different use‐cases for data glasses as well as their impact on the used display. This includes the discussion of a new 0.64‐in 720p OLED microdisplay for AR see‐through head‐mounted display (ST‐HMD) which features 1,280 × 720 resolution at a pixel pitch of 11um with four subpixels and 8bit per color. For low latency, an adequate high frame rate has been targeted. To reduce motion...

article

Netzwerktheorie(n)

Christian Schmidt

Gruppe. Interaktion. Organisation. Zeitschrift für Angewandte Organisationspsychologie... > 2019 > 50 > 2 > 239-242

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INFONA - science communication portal

Search results for: Christian Schmidt

67‐4: Late‐News Paper: A New Semi‐transparent OLED‐on‐Silicon Microdisplay Technology Enabling New Optical Design Opportunities for Slim Near‐to‐Eye Optics

Robot‐based 6D bioprinting for soft tissue biomedical applications

A practical guide to bioimaging research data management in core facilities

Investigation of TGF‐α‐overexpressing mouse hepatocytes (TAMH) cultured as spheroids for use in hepatotoxicity screening of drug candidates

Renal impairment and mortality in patients with STEMI and cardiogenic shock/cardiac arrest

Evolutionary history of Euteliidae (Lepidoptera, Noctuoidea)

CO₂ Conversion by Fischer‐Tropsch Synthesis Using Na‐Modified Fe Catalysts

Wheat yield potential can be maximized by increasing red to far‐red light conditions at critical developmental stages

56‐3: New Ultra Low‐Power High Brightness Microdisplays Enabling Broad Applications

Groundwater‐surface water exchange as key control for instream and groundwater nitrate concentrations along a first‐order agricultural stream

Increased rejection rates in kidney transplantations during the COVID‐19 pandemic

Convalescent plasma treatment for early post‐kidney transplant acquired COVID‐19

Impact of COVID‐19 pandemic on STEMI care: An expanded analysis from the United States

Seasonal and short‐term controls of riparian oxygen dynamics and the implications for redox processes

Extreme sleep fragmentation for 11 consecutive days and nights does not significantly alter total sleep time, and sleep stage distribution, during the continuous alpine downhill skiing world record

Genomic‐wide sequencing reveals remarkable connection between widely disjunct populations of the internationally threatened bog buck moth

Linear array detector for online diagnostics of spectral distributions at MHz repetition rates

Sources and variability of CO₂ in a prealpine stream gravel bar

52‐2: Invited Paper: A New 0.64″ 720p OLED Microdisplay for Application in Industrial See‐Through AR HMD

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