Results 131 to 140 of about 93,944 (304)

Zein‐Based Adhesives: Sustainable Extraction and Application in Bioadhesive Technologies

Advanced Engineering Materials, EarlyView.
Zein is extracted from corn gluten meal using a simple and scalable process with high yield (~90%). The resulting protein is applied in bioadhesives modified with Ca2+ and Fe3+ ions, exhibiting substrate‐dependent adhesion. The findings demonstrate competitive bonding performance and highlight the role of ionic interactions in tuning adhesion ...
Paula Bertolino Sanvezzo, Daniela Winsley Valereto Friozi, Vinícius de Oliveira, Marcia Cristina Branciforti   +3 more
wiley   +1 more source

Left bundle branch area pacing optimized cardiac resynchronization – a promise of way better?

Cardiologia Hungarica
Conduction system pacing may revolutionize conventional pacemaker therapy. Both His- and left bundle branch area pacing (LBBAP) can prevent right ventricular pacing induced cardiomyopathy in bradycardia pacemaker indications, furtheron they might improve
Péter Ezer, Gábor Vilmányi, Kitti Dorina Szűcs, Réka Alíz Lukács, Attila Kónyi   +4 more
doaj   +1 more source

Handbook of Establishing and Maintaining Oxygen‐Free Atmospheres

Advanced Engineering Materials, EarlyView.
This study presents a practical framework for creating oxygen‐free atmospheres at ambient pressure using silane‐doped inert gases. The results show that ultra‐low oxygen levels and strongly reduced water content can be achieved through controlled silane dosing, drying systems, and sensor monitoring.
Sascha Jan Zimmermann, René Gustus, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +3 more
wiley   +1 more source

Providing an efficient algorithm for finding R peaks in ECG signals and detecting ventricular abnormalities with morphological features

Journal of Medical Signals and Sensors, 2016
Ventricular arrhythmias are one of the most important causes of annual deaths in the world, which may lead to sudden cardiac deaths. Accurate and early diagnosis of ventricular arrhythmias in heart diseases is essential for preventing mortality in ...
Mohammad Pooyan, Fateme Akhoondi
doaj  

Retrograde Conduction in Complete Heart Block*

, 1966
In complete heart block, absolute independence between atrial and ventricular activity does not always occur. Several mechanisms may be postu-lated to explain this phenomenon.
Cesar Castillo, Philip Samet
core  

Derivation of the bidomain equations for a beating heart with a general microstructure

, 2011
A novel multiple scales method is formulated that can be applied to problems which have an almost periodic microstructure not in Cartesian coordinates but in a general curvilinear coordinate system.
Chapman, Stephen, S. J. Chapman, Richardson, Giles, Richardson, G, Chapman, SJ, Chapman, S.J., G. Richardson   +6 more
core   +1 more source

Effect of Oxygen Content on Surface and Subsurface Integrity During Turning of Ti–6Al–4V

Advanced Engineering Materials, EarlyView.
This study examines how oxygen content in the ambient atmosphere affects the surface and subsurface properties of Ti–6Al–4V during turning. Results show that oxygen does not influence surface roughness. However, machining in an extremely high vacuum‐adequate atmosphere increases surface hardness by up to 7.8% and induces compressive residual stresses ...
Benjamin Bergmann, Berend Denkena, Hilke Petersen, Florian Schaper   +3 more
wiley   +1 more source

Cardiac conduction system regeneration prevents arrhythmias after myocardial infarction

Arrhythmias are a hallmark of myocardial infarction (MI) and increase patient mortality. How insult to the cardiac conduction system causes arrhythmias following MI is poorly understood.
Rodriguez, Claudio Cortes, Berg, Lucas Arantes, Rodriguez, Blanca, Camps, Julia, Riebel, Leto Luana, Sayers, Judy R., de Villiers, Carla, Weinberger, Michael, Sun, Xin, Sigal, Sarah, Riley, Paul R., Martinez-Navarro, Hector, Sauka-Spengler, Tatjana, Herring, Neil   +13 more
core   +1 more source

Near‐Field Electrospinning Micro‐Printhead Achieves Precise Control of Nanofiber Deposition

Advanced Engineering Materials, EarlyView.
A micro‐printhead for near‐field electrospinning enables reproducible deposition of polymer nanofibers with diameters below 50 nm. Systematic parameter studies uncover the mechanisms linking operating conditions to fiber morphology, paving the way for precise and low‐cost nanoscale 3D manufacturing.As a high‐resolution, cost‐effective, and rapid ...
Han Xu, Dario Mager, Jan G. Korvink
wiley   +1 more source

Histogenetic transformations of conductive system of the heart

Морфологія, 2010
Були досліджені серця ембріонів і плодів людини, а також серця ембріонів, новонароджених та зрілих щурів. Дослідження проводилося з використанням панелі антитіл (NF, α-SMA, MSA, neuregulin, Ki-67, bax, CD95), панелі лектинів (WGA, PNA, HPA, SBA, SNA), електронної мікроскопії.
openaire   +2 more sources