Search results for: R. Vogt

Items from 1 to 20 out of 270 results

article

Magnetic Resonance Imaging Measures to Track Atrophy Progression in Progressive Supranuclear Palsy in Clinical Trials

Andrea Quattrone, Nicolai Franzmeier, Hans‐Jürgen Huppertz, Martin Klietz, more

Movement Disorders > 39 > 8 > 1329 - 1342

Background Several magnetic resonance imaging (MRI) measures have been suggested as progression biomarkers in progressive supranuclear palsy (PSP), and some PSP staging systems have been recently proposed. Objective Comparing structural MRI measures and staging systems in tracking atrophy progression in PSP and estimating the sample size to use them as endpoints in clinical trials. Methods Progressive...

article

Scale for the assessment and rating of ataxia: Age‐dependent performance of healthy adults

Marcus Grobe‐Einsler, Alina Schmidt, Tamara Schaprian, Ina R. Vogt, more

European Journal of Neurology > 30 > 2 > 548 - 551

Background and purpose The Scale for Assessment and Rating of Ataxia (SARA) is a widely used clinical scale. The objective was to study the age dependence of SARA in healthy adults and to define age‐specific cut‐off values to differentiate healthy from ataxic individuals. Methods Data from 390 healthy individuals and 119 spinocerebellar ataxia patients were analyzed. SARA scores were mapped on...

article

Digital Gait Biomarkers Allow to Capture 1‐Year Longitudinal Change in Spinocerebellar Ataxia Type 3

Winfried Ilg, Björn Müller, Jennifer Faber, Judith Gaalen, more

Movement Disorders > 37 > 11 > 2295 - 2301

Measures of step variability and body sway during gait have shown to correlate with clinical ataxia severity in several cross‐sectional studies. However, to serve as a valid progression biomarker, these gait measures have to prove their sensitivity to robustly capture longitudinal change, ideally within short time frames (eg, 1 year). We present the first multicenter longitudinal gait analysis study...

article

Late outcome after surgical and topical treatment for Aspergillus mediastinitis after heart transplantation

Paul R. Vogt, Raed Aser, Daniel Schmidlin, Paul Mohacsi, more

Journal of Cardiac Surgery > 36 > 7 > 2558 - 2561

The 7‐year long‐term survival after Aspergillus fumigatus mediastinitis after heart transplantation, an uncommonly described condition, is herein reported. A 66‐year‐old male developed an infection with A. fumigatus covering the entire thoracic cavity with a fungal turf after orthotopic heart transplantation. Repeated surgical removal of infectious and necrotic tissue together with innovative topical...

article

Interlaboratory comparison of angular‐dependent photovoltaic device measurements: Results and impact on energy rating

Nicholas Riedel‐Lyngskær, Adrián A. Santamaría Lancia, Fabian Plag, Ingo Kröger, more

Progress in Photovoltaics: Research and Applications > 29 > 3 > 315 - 333

This paper presents the results from an extensive interlaboratory comparison of angular‐dependent measurements on encapsulated photovoltaic (PV) cells. Twelve international laboratories measure the incident angle modifier of two unique PV devices. The absolute measurement agreement is ±2.0% to the weighted mean for angles of incidence (AOI) ≤ 65°, but from 70° to 85°, the range of measurement deviations...

article

In the operating room, do not leave important things unattended

Carlos A. Mestres, Juri Sromicki, Paul R. Vogt

Journal of Cardiac Surgery > 36 > 3 > 990 - 991

article

When life is an itch: What harms, helps, and heals from the patients' perspective? Differences and similarities among skin diseases

Alvyn Chee, Lorenzo Branca, Florence Jeker, Deborah R. Vogt, more

Dermatologic Therapy > 33 > 4 > n/a - n/a

Itch is the commonest skin‐related symptom, associated with a high psychosocial and economic burden. While the main focus of itch research lies on a few chronic skin diseases, only little is known about the perception of itch, itch‐aggravating/‐relieving factors and treatment preferences in patients with acute and chronic itch of various etiology. In this cross‐sectional study, we assessed these aspects...

article

Single-dose versus 3-day cotrimoxazole prophylaxis in transurethral resection or greenlight laser vaporisation of the prostate: study protocol for a multicentre randomised placebo controlled non-inferiority trial (CITrUS trial)

Benjamin Speich, Kathrin Bausch, Jan A. Roth, Lars G. Hemkens, more

Trials > 2019 > 20 > 1 > 1-11

Background Transurethral resection of the prostate (TURP) and Greenlight laser vaporisation (GL) of the prostate are frequently performed urological procedures. For TURP, a single-dose antimicrobial prophylaxis (AP) is recommended to reduce postoperative urinary tract infections. So far, no international recommendations for AP have been established for GL. In a survey-based study in Switzerland, Germany...

article

Flux Similarity and Turbulent Transport of Momentum, Heat and Carbon Dioxide in the Urban Boundary Layer

M. Schmutz, R. Vogt

Boundary-Layer Meteorology > 2019 > 172 > 1 > 45-65

Turbulence characteristics in the urban boundary layer of a mid-latitude European city are investigated using a quadrant analysis of more than 12 years of eddy-covariance measurements at 39 m above street level. To describe the ongoing turbulent-exchange processes, particularly the properties of ejection and sweep events, presented here are the transfer efficiency and the similarity of momentum, heat,...

article

Efficacy and safety of exogenous ketone bodies for preventive treatment of migraine: A study protocol for a single-centred, randomised, placebo-controlled, double-blind crossover trial

Elena Gross, Niveditha Putananickal, Anna-Lena Orsini, Simone Schmidt, more

Trials > 2019 > 20 > 1 > 1-18

Background Currently available prophylactic migraine treatment options are limited and are associated with many, often intolerable, side-effects. Various lines of research suggest that abnormalities in energy metabolism are likely to be part of migraine pathophysiology. Previously, a ketogenic diet (KD) has been reported to lead to a drastic reduction in migraine frequency. An alternative method to...

article

Pattern of Care Study in Metastatic Renal-Cell Carcinoma in the Preimmunotherapy Era in Switzerland

Nadja Sandmeier, Sacha I. Rothschild, Christian Rothermundt, Richard Cathomas, more

Clinical Genitourinary Cancer > 2018 > 16 > 4 > e711-e718

In metastatic renal-cell carcinoma (mRCC), physicians have a plethora of therapeutic choices, with the latest addition of checkpoint inhibitors. However, many questions regarding the best use of the respective drugs remain unanswered. Therefore, it is important to examine and summarize the outcome of real-world experiences to understand the practical value of the various drugs in daily use and foster...

article

Comparison of glucagon-like peptide-1 receptor (GLP-1R) PET/CT, SPECT/CT and 3T MRI for the localisation of occult insulinomas: evaluation of diagnostic accuracy in a prospective crossover imaging study

Kwadwo Antwi, Melpomeni Fani, Tobias Heye, Guillaume Nicolas, more

European Journal of Nuclear Medicine and Molecular Imaging > 2018 > 45 > 13 > 2318-2327

Purpose Benign insulinomas are the most prevalent cause of endogenous hyperinsulinaemic hypoglycaemia (EHH) in adults, and because of their small size are difficult to localise. The purpose of the study was to test the diagnostic accuracy and clinical impact of glucagon-like peptide-1 receptor (GLP-1R) PET/CT using ⁶⁸Ga-DOTA-exendin-4 in consecutive adult patients referred for localisation of insulinomas...

article

Correlated prompt fission data in transport simulations

P. Talou, R. Vogt, J. Randrup, M. E. Rising, more

The European Physical Journal A > 2018 > 54 > 1 > 1-38

. Detailed information on the fission process can be inferred from the observation, modeling and theoretical understanding of prompt fission neutron and $\gamma$ γ -ray observables. Beyond simple average quantities, the study of distributions and correlations in prompt data, e.g., multiplicity-dependent neutron and $\gamma$ γ -ray spectra, angular distributions of the emitted particles,...

article

Fission Reaction Event Yield Algorithm FREYA 2.0.2

J.M. Verbeke, J. Randrup, R. Vogt

Computer Physics Communications > 2018 > 222 > C > 263-266

FREYA (Fission Reaction Event Yield Algorithm) is a fission event generator which models complete fission events. As such, it automatically includes fluctuations as well as correlations between observables, resulting from conservation of energy and momentum. The purpose of this paper is to present the main differences between FREYA versions 1.0 and 2.0.2 : additional fissionable isotopes, angular...

article

PV module current gains due to structured backsheets

Malte R. Vogt, Hendrik Holst, Henning Schulte-Huxel, Susanne Blankemeyer, more

Energy Procedia > 2017 > 124 > C > 495-503

We evaluate the optical performance of PV modules with respect to an increase in short circuit current density. Our evaluation is based on the combination of ray tracing simulations and measurements on test modules with four types of backsheets: Two of them are structured, the third is white and diffusively reflecting and the fourth reflects no light. Under normal incidence, structured backsheets...

article

UV radiation hardness of photovoltaic modules featuring crystalline Si solar cells with AlO_x/p⁺‐type Si and SiN_y/n⁺‐type Si interfaces

Robert Witteck, Byungsul Min, Henning Schulte‐Huxel, Hendrik Holst, more

physica status solidi (RRL) – Rapid Research Letters > 11 > 8 > n/a - n/a

We report on the UV radiation hardness of photovoltaic modules with bifacial n‐type Passivated Emitter and Rear Totally diffused crystalline Si cells that are embedded in an encapsulation polymer with enhanced UV transparency. Modules with front junction cells featuring an AlO_x/p⁺‐type Si passivation interface at the illuminated side are stable for a UV irradiation dose of 598 kWh m⁻². In contrast,...

article

UV‐induced degradation of PERC solar modules with UV‐transparent encapsulation materials

Robert Witteck, Boris Veith‐Wolf, Henning Schulte‐Huxel, Arnaud Morlier, more

Progress in Photovoltaics: Research and Applications > 25 > 6 > 409 - 416

In this paper, we report on the stability of p‐type passivated emitter and rear cells under ultraviolet (UV) exposure with various silicone nitride passivation coatings and embedded in different encapsulation polymers. Our results reveal that UV transparent polymers can result in a module power loss of up to 6% under a UV irradiation dose of 497 kWh/m². We show that the degradation in power is caused...

article

How to introduce medical ethics at the bedside - Factors influencing the implementation of an ethical decision-making model

Barbara Meyer-Zehnder, Heidi Albisser Schleger, Sabine Tanner, Valentin Schnurrer, more

BMC Medical Ethics > 2017 > 18 > 1 > 1-14

Background As the implementation of new approaches and procedures of medical ethics is as complex and resource-consuming as in other fields, strategies and activities must be carefully planned to use the available means and funds responsibly. Which facilitators and barriers influence the implementation of a medical ethics decision-making model in daily routine? Up to now, there has been little examination...

article

Decreased neonatal pain response after vaginal-operative delivery with Kiwi OmniCup versus metal ventouse

E. A. Huhn, E. Visca, D. R. Vogt, S. von Felten, more

BMC Pregnancy and Childbirth > 2017 > 17 > 1 > 1-8

Background Vaginal delivery, especially operative assisted vaginal delivery, seems to be a major stressor for the neonate. The objective of this study was to evaluate the stress response after metal cup versus Kiwi Omnicup® ventouse delivery. Methods The study was a secondary observational analysis of data from a former prospective randomised placebo controlled multicentre study on the analgesic...

article

High-Efficiency Modules With Passivated Emitter and Rear Solar Cells—An Analysis of Electrical and Optical Losses

Henning Schulte-Huxel, Robert Witteck, Hendrik Holst, Malte R. Vogt, more

IEEE Journal of Photovoltaics > 2017 > 7 > 1 > 25 - 31

We process a photovoltaic (PV) module with 120 half passivated emitter and rear cells that exhibits an independently confirmed power of 303.2 W and a module efficiency of 20.2% (aperture area). The cells are optimized for operation within the module. We enhance light harvesting from the inactive spacing between the cells and the cell interconnect ribbons. Additionally, we reduce the inactive area...

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INFONA - science communication portal

Search results for: R. Vogt

Magnetic Resonance Imaging Measures to Track Atrophy Progression in Progressive Supranuclear Palsy in Clinical Trials

Scale for the assessment and rating of ataxia: Age‐dependent performance of healthy adults

Digital Gait Biomarkers Allow to Capture 1‐Year Longitudinal Change in Spinocerebellar Ataxia Type 3

Late outcome after surgical and topical treatment for Aspergillus mediastinitis after heart transplantation

Interlaboratory comparison of angular‐dependent photovoltaic device measurements: Results and impact on energy rating

In the operating room, do not leave important things unattended

When life is an itch: What harms, helps, and heals from the patients' perspective? Differences and similarities among skin diseases

Single-dose versus 3-day cotrimoxazole prophylaxis in transurethral resection or greenlight laser vaporisation of the prostate: study protocol for a multicentre randomised placebo controlled non-inferiority trial (CITrUS trial)

Flux Similarity and Turbulent Transport of Momentum, Heat and Carbon Dioxide in the Urban Boundary Layer

Efficacy and safety of exogenous ketone bodies for preventive treatment of migraine: A study protocol for a single-centred, randomised, placebo-controlled, double-blind crossover trial

Pattern of Care Study in Metastatic Renal-Cell Carcinoma in the Preimmunotherapy Era in Switzerland

Comparison of glucagon-like peptide-1 receptor (GLP-1R) PET/CT, SPECT/CT and 3T MRI for the localisation of occult insulinomas: evaluation of diagnostic accuracy in a prospective crossover imaging study

Correlated prompt fission data in transport simulations

Fission Reaction Event Yield Algorithm FREYA 2.0.2

PV module current gains due to structured backsheets

UV radiation hardness of photovoltaic modules featuring crystalline Si solar cells with AlO_x/p⁺‐type Si and SiN_y/n⁺‐type Si interfaces

UV‐induced degradation of PERC solar modules with UV‐transparent encapsulation materials

How to introduce medical ethics at the bedside - Factors influencing the implementation of an ethical decision-making model

Decreased neonatal pain response after vaginal-operative delivery with Kiwi OmniCup versus metal ventouse

High-Efficiency Modules With Passivated Emitter and Rear Solar Cells—An Analysis of Electrical and Optical Losses

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