Search results for: Alexander Scholz

Items from 1 to 20 out of 30 results

article

Inkjet‐Printed Tungsten Oxide Memristor Displaying Non‐Volatile Memory and Neuromorphic Properties (Adv. Funct. Mater. 20/2024)

Hongrong Hu, Alexander Scholz, Christian Dolle, Alexander Zintler, more

Advanced Functional Materials > 34 > 20 > n/a - n/a

Inkjet Printing In article number 2302290, Jasmin Aghassi‐Hagmann and co‐workers present an inkjet‐printed tungsten oxide memristor showing the high conductive state with a grown filament (ECM type) suitable for non‐volatile memory. Without an electroforming step, the memristor can be also used as an interfacial type device to perform neuromorphic learning and signal processing. All features can be...

article

Inkjet‐Printed Tungsten Oxide Memristor Displaying Non‐Volatile Memory and Neuromorphic Properties

Hongrong Hu, Alexander Scholz, Christian Dolle, Alexander Zintler, more

Advanced Functional Materials > 34 > 20 > n/a - n/a

Printed electronics including large‐area sensing, wearables, and bioelectronic systems are often limited to simple circuits and hence it remains a major challenge to efficiently store data and perform computational tasks. Memristors can be considered as ideal candidates for both purposes. Herein, an inkjet‐printed memristor is demonstrated, which can serve as a digital information storage device,...

article

The rotation–activity relation of M dwarfs: From K2 to TESS and PLATO

Stefanie Raetz, Beate Stelzer, Alexander Scholz

Astronomische Nachrichten > 341 > 5 > 519 - 556

Studies of the rotation–activity relation of late‐type stars are essential to enhance our understanding of stellar dynamos and angular momentum evolution. We study the rotation–activity relation with K2 for M dwarfs, where it is especially poorly understood. We analyzed the light curves of all bright and nearby M dwarfs form the Superblink proper motion catalog that were in the K2 field of view. Using...

article

An empirical assessment of food security on First Nations in Canada

B. James Deaton, Alexander Scholz, Bethany Lipka

Canadian Journal of Agricultural Economics/Revue canadienne d'agroeconomie > 68 > 1 > 5 - 19

Using data generated from surveys conducted on First Nations throughout Canada, we use regression analysis to examine factors influencing food insecurity. To our knowledge, this is the first time a regression‐based analysis has been conducted to examine food insecurity on First Nations in Canada. As expected, income is inversely related to the likelihood that one reports their household as experiencing...

article

Association between trans fatty acid intake and overweight including obesity in 4 to 5‐year‐old children from the INMA study

Alexander Scholz, Eva Maria Navarrete‐Muñoz, Manuela García‐de‐la‐Hera, Ana Fernandez‐Somoano, more

Pediatric Obesity > 14 > 9 > n/a - n/a

Background Trans fatty acid (TFA) intake has been positively associated with obesity in adults, although the evidence in children is scarce. There is growing evidence that TFA of industrial or natural origin may have different effects. Objectives We aimed to explore the association between total, industrial, and natural TFA intake and overweight including obesity in 4 to 5‐year‐old Spanish children...

article

31st Annual Meeting and Associated Programs of the Society for Immunotherapy of Cancer (SITC 2016): part two

Casey Ager, Matthew Reilley, Courtney Nicholas, Todd Bartkowiak, more

Journal for ImmunoTherapy of Cancer > 2016 > 4 > 1 > 107-221

article

#FoundThem–21st Century pre-search and post-detection seti protocols for social and digital media

Duncan Forgan, Alexander Scholz

Acta Astronautica > 2016 > 126 > C > 312-315

The transmission of news stories in global culture has changed fundamentally in the last three decades. The general public are alerted to breaking stories on increasingly rapid timescales, and the discussion/distortion of facts by writers, bloggers, commenters and Internet users can also be extremely fast. The narrative of a news item no longer belongs to a small cadre of conventional media outlets,...

chapter

Rotation of Young Very Low Mass Objects

Alexander Scholz, Jochen Eislöffel

ESO ASTROPHYSICS SYMPOSIA > High Resolution Infrared Spectroscopy in Astronomy > 493-498

We present our large sample of photometric rotation periods for VLM objects in young open clusters. Based on these periods, we investigate the mass and age dependence of rotation, and find a) a significant lack of slow rotators, b) exponential rotational braking, and c) no significant influence of disk-locking for ages > 3Myr. Using additional information about disks and surface activity,...

article

Angiopoietin-2-induced blood–brain barrier compromise and increased stroke size are rescued by VE-PTP-dependent restoration of Tie2 signaling

Stefanie Gurnik, Kavi Devraj, Jadranka Macas, Maiko Yamaji, more

Acta Neuropathologica > 2016 > 131 > 5 > 753-773

The homeostasis of the central nervous system is maintained by the blood–brain barrier (BBB). Angiopoietins (Ang-1/Ang-2) act as antagonizing molecules to regulate angiogenesis, vascular stability, vascular permeability and lymphatic integrity. However, the precise role of angiopoietin/Tie2 signaling at the BBB remains unclear. We investigated the influence of Ang-2 on BBB permeability in wild-type...

article

Angiopoietin‐2: a multifaceted cytokine that functions in both angiogenesis and inflammation

Alexander Scholz, Karl H. Plate, Yvonne Reiss

Annals of the New York Academy of Sciences > 1347 > 1 > 45 - 51

Angiogenesis and inflammation are two highly linked processes. In the last decade, several factors with dual function in both of these major pathways have been identified. This review focuses on angiopoietin‐2 (Ang‐2), an important proangiogenic factor that has more recently been implicated in mediating inflammatory processes as well. Ang‐2 is upregulated in multiple inflammatory diseases and has...

chapter

Combining visual and inertial features for efficient grasping and bin-picking

Dirk Buchholz, Daniel Kubus, Ingo Weidauer, Alexander Scholz, more

2014 IEEE International Conference on Robotics and Automation (ICRA) > 875 - 882

2014 IEEE International Conference on Robotics and Automation (ICRA)

Grasping objects is a well-known problem in robotics. If the objects to be grasped are known, usually they are to be placed at a desired position in a desired orientation. Therefore, the object pose w.r.t the gripper has to be known before placing the object. In this paper we propose a simple and efficient, yet robust approach to this challenge, which can (nearly) eliminate dead times of the employed...

article

Enantioselective enzymatic synthesis of the α-hydroxy ketone (R)-acetoin from meso-2,3-butanediol

Svenja Kochius, Melanie Paetzold, Alexander Scholz, Hedda Merkens, more

Journal of Molecular Catalysis. B, Enzymatic > 2014 > 103 > Complete > 61-66

Acetoin (3-hydroxy-2-butanone) is an important flavour compound and is applied in cosmetics, pharmacy and chemical synthesis. In contrast to chemical syntheses or fermentations an enzymatic route facilitates enantioselective acetoin production. The discovery of a (S)-selective alcohol dehydrogenase enables a novel production process of (R)-acetoin from meso-2,3-butanediol. It was shown that the regeneration...

article

Measurement of anesthetic uptake kinetics in the brain using ¹⁹F MRI and cross-correlation analysis after pulsed application

Maxim Terekhov, Alexander Scholz, Laura M. Schreiber

Magnetic Resonance Materials in Physics, Biology and Medicine > 2014 > 27 > 1 > 107-111

Object We present a pilot study based on ¹⁹F-MRI to measure fast and slow wash-in and wash-out kinetics of volatile anesthetics in pig brain. Method The periodic administration of anesthetics in pulsed mode is used to enhance the sensitivity of the anesthetic concentration detection by ¹⁹F-MRI signal. Temporal correlation analysis allows mapping the kinetics time constants. Results The clear correlation...

article

Semi‐continuous in situ magnetic separation for enhanced extracellular protease production—modeling and experimental validation

Martin Cerff, Alexander Scholz, Tobias Käppler, Kim E. Ottow, more

Biotechnology and Bioengineering > 110 > 8 > 2161 - 2172

In modern biotechnology proteases play a major role as detergent ingredients. Especially the production of extracellular protease by Bacillus species facilitates downstream processing because the protease can be directly harvested from the biosuspension. In situ magnetic separation (ISMS) constitutes an excellent adsorptive method for efficient extracellular protease removal during cultivation. In...

article

Lung ventilation‐ and perfusion‐weighted Fourier decomposition magnetic resonance imaging: In vivo validation with hyperpolarized ³He and dynamic contrast‐enhanced MRI

Grzegorz Bauman, Alexander Scholz, Julien Rivoire, Maxim Terekhov, more

Magnetic Resonance in Medicine > 69 > 1 > 229 - 237

The purpose of this work was to validate ventilation‐weighted (VW) and perfusion‐weighted (QW) Fourier decomposition (FD) magnetic resonance imaging (MRI) with hyperpolarized ³He MRI and dynamic contrast‐enhanced perfusion (DCE) MRI in a controlled animal experiment. Three healthy pigs were studied on 1.5‐T MR scanner. For FD MRI, the VW and QW images were obtained by postprocessing of time‐resolved...

article

Molecular mechanisms of the crosstalk between mitochondrial and NADPH oxidase derived reactive oxygen species in white blood cells — Implications for cardiovascular diseases

Philip Wenzel, Swenja Schuhmacher, Matthias Oelze, Alexander Scholz, more

Vascular Pharmacology > 2012 > 56 > 5-6 > 338

article

Nitroglycerin-induced endothelial dysfunction and tolerance involve adverse phosphorylation and S-glutathionylation of endothelial nitric oxide synthase — Beneficial effects of therapy with the AT1-receptor blocker telmisartan

Maike Knorr, Sebastian Steven, Michael Hausding, Swenja Kröller-Schuhmacher, more

Vascular Pharmacology > 2012 > 56 > 5-6 > 351-352

article

Comparison of direct and indirect antioxidant effects of linagliptin with other gliptins — Evidence for antioxidant and antiinflammatory properties of linagliptin

Swenja Kröller-Schuhmacher, Maike Knorr, Matthias Oelze, Alexandra Schuff, more

Vascular Pharmacology > 2012 > 56 > 5-6 > 352

article

Hyperglycemia and oxidative stress in cultured endothelial cells – a comparison of primary endothelial cells with an immortalized endothelial cell line

Susanne Karbach, Thomas Jansen, Sven Horke, Tjebo Heeren, more

Journal of Diabetes and Its Complications > 2012 > 26 > 3 > 155-162

Diabetes mellitus is a major risk factor for the development of cardiovascular disease and oxidative stress plays an important role in this process. Therefore, we investigated the effects of hyperglycemia on the formation of reactive oxygen species (ROS) and nitric oxide/cGMP signaling in two different endothelial cell cultures. Human umbilical vein endothelial cells (HUVEC) and EA.hy 926 cells showed...

article

The frequency of large variations in the near‐infrared fluxes of T Tauri stars

Alexander Scholz

Monthly Notices of the Royal Astronomical Society > 420 > 2 > 1495 - 1502

Variability is a characteristic feature of young stellar objects (YSOs) and could contribute to the large scatter observed in Hertzsprung–Russell (HR) diagrams for star‐forming regions. For typical YSOs, however, the long‐term effects of variability are poorly constrained. Here we use archived near‐infrared photometry from Two Micron All Sky Survey (2MASS), UKIDSS and DENIS to investigate the long‐term...

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INFONA - science communication portal

Search results for: Alexander Scholz

Inkjet‐Printed Tungsten Oxide Memristor Displaying Non‐Volatile Memory and Neuromorphic Properties (Adv. Funct. Mater. 20/2024)

Inkjet‐Printed Tungsten Oxide Memristor Displaying Non‐Volatile Memory and Neuromorphic Properties

The rotation–activity relation of M dwarfs: From K2 to TESS and PLATO

An empirical assessment of food security on First Nations in Canada

Association between trans fatty acid intake and overweight including obesity in 4 to 5‐year‐old children from the INMA study

31st Annual Meeting and Associated Programs of the Society for Immunotherapy of Cancer (SITC 2016): part two

#FoundThem–21st Century pre-search and post-detection seti protocols for social and digital media

Rotation of Young Very Low Mass Objects

Angiopoietin-2-induced blood–brain barrier compromise and increased stroke size are rescued by VE-PTP-dependent restoration of Tie2 signaling

Angiopoietin‐2: a multifaceted cytokine that functions in both angiogenesis and inflammation

Combining visual and inertial features for efficient grasping and bin-picking

Enantioselective enzymatic synthesis of the α-hydroxy ketone (R)-acetoin from meso-2,3-butanediol

Measurement of anesthetic uptake kinetics in the brain using ¹⁹F MRI and cross-correlation analysis after pulsed application

Semi‐continuous in situ magnetic separation for enhanced extracellular protease production—modeling and experimental validation

Lung ventilation‐ and perfusion‐weighted Fourier decomposition magnetic resonance imaging: In vivo validation with hyperpolarized ³He and dynamic contrast‐enhanced MRI

Molecular mechanisms of the crosstalk between mitochondrial and NADPH oxidase derived reactive oxygen species in white blood cells — Implications for cardiovascular diseases

Nitroglycerin-induced endothelial dysfunction and tolerance involve adverse phosphorylation and S-glutathionylation of endothelial nitric oxide synthase — Beneficial effects of therapy with the AT1-receptor blocker telmisartan

Comparison of direct and indirect antioxidant effects of linagliptin with other gliptins — Evidence for antioxidant and antiinflammatory properties of linagliptin

Hyperglycemia and oxidative stress in cultured endothelial cells – a comparison of primary endothelial cells with an immortalized endothelial cell line

The frequency of large variations in the near‐infrared fluxes of T Tauri stars

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