Results 81 to 90 of about 477,196 (292)

Removing Homocoupling Defects in Alkoxy/Alkyl‐PBTTT Enhances Polymer:Fullerene Co‐Crystal Formation and Stability

Advanced Functional Materials, EarlyView.
PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu, Jochen Vanderspikken, Paola Mantegazza, Stefania Moro, Mouna Hamid, Sigurd Mertens, Niko Van den Brande, Laurence Lutsen, Vincent Lemaur, David Beljonne, Giovanni Costantini, Koen Vandewal, Bruno Van Mele, Wouter Maes, Bart Goderis   +14 more
wiley   +1 more source

The Evaluation of P‐Wave Parameters in Patients With Percutaneous Closure of Atrial Septal Defect

Annals of Noninvasive Electrocardiology
Background Atrial septal defect (ASD) can lead to volume overload and related changes in P‐wave parameters in surface electrocardiograms of these patients. In this study, we aimed to evaluate the effect of volume overload on P‐wave parameters in patients
Ramazan Astan, Fehmi Kacmaz, Ersin Saricam, Erdogan Ilkay   +3 more
doaj   +1 more source

Photoswitchable Conductive Metal–Organic Frameworks

Advanced Functional Materials, EarlyView.
A conductive material where the conductivity can be modulated remotely by irradiation with light is presented. It is based on films of conductive metal–organic framework type Cu3(HHTP)2 with embedded photochromic molecules such as azobenzene, diarylethene, spiropyran, and hexaarylbiimidazole in the pores.
Yidong Liu, Mersad Mostaghimi, Abhinav Chandresh, Saibal Jana, Wolfgang Wenzel, Lars Heinke   +5 more
wiley   +1 more source

Relation between the behaviors of P-wave and QT dispersions in elderly patients with heart failure

Arquivos Brasileiros de Cardiologia, 2002
OBJECTIVE: To assess the relation between P-wave and QT dispersions in elderly patients with heart failure. METHODS: Forty-seven elderly patients (75.6±6 years) with stable heart failure in NYHA functional classes II or III and with ejection fractions of
Szlejf Cláudia, Rays Jairo, Gebara Otávio Celso Eluf, Vieira Núbia Welerson, Pierri Humberto, Nussbacher Amit, Serro-Azul João Batista, Samesima Nelson, Pastore Carlos Alberto, Wajngarten Maurício   +9 more
doaj  

Ferrocene Derivatives Enable Ultrasensitive Perovskite Photodetectors with Enhanced Reverse Bias Stability

Advanced Functional Materials, EarlyView.
Novel ferrocene derivatives (e.g., FcPhc2) are used as an ultrathin layer hole‐blocking layer, reducing hole injection from the Ag contact. This results in an ultralow noise spectral density of 1.2 × 10−14 A Hz−1/2, and a high specific detectivity of 8.1 × 1012 Jones at −0.5 V.
Eunyoung Hong, William D. J. Tremlett, Lucy Hart, Beier Hu, Zhuoran Qiao, Patipan Sukpoonprom, Sarah Fearn, Edoardo Angela, Matilde Brunetta, Demosthenes C. Koutsogeorgis, Nikolaos Kalfagiannis, Davide Nodari, Martyn A. McLachlan, Piers R. F. Barnes, Artem A. Bakulin, Nicholas J. Long, Nicola Gasparini   +16 more
wiley   +1 more source

Understanding and Optimizing Li Substitution in P2‐Type Sodium Layered Oxides for Sodium‐Ion Batteries

Advanced Functional Materials, EarlyView.
This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous 
Mingfeng Xu, Giovanni Gammaitoni, Michael Häfner, Eduardo Villalobos‐Portillo, Carlo Marini, Matteo Bianchini   +5 more
wiley   +1 more source

DISPERSIÓN DE LA ONDA P INCREMENTADA EN FUTBOLISTAS DE ALTO RENDIMIENTO Y SU RELACIÓN CON EL TIEMPO DE PRÁCTICA DEPORTIVA / Increased P wave dispersion in high performance soccer players and its relationship with sport practice time [PDF]

CorSalud, 2013
Resumen: Introducción y objetivos: La dispersión de la onda P y su máxima duración se han vinculado con el riesgo incrementado para desarrollar fibrilación auricular. Estas variables han sido escasamente estudiadas en deportistas de elite.
Elibet Chávez González, Yaniel Castro Torres, Leonardo Pérez González, Magda A. Rabassa López–Calleja, Janny Monzón León, Reinaldo Ramos Martín, Raimundo Carmona Puerta   +6 more
doaj  

Comparison of P-wave dispersion in healthy dogs, dogs with chronic valvular disease and dogs with disturbances of supraventricular conduction

Acta Veterinaria Scandinavica, 2011
Background P-wave dispersion (Pd) is a new ECG index used in human cardiology and veterinary medicine. It is defined as the difference between the maximum and the minimum P-wave duration recorded from multiple different ECG leads.
Nicpoń Józef, Pasławska Urszula, Szałas Anna, Noszczyk-Nowak Agnieszka   +3 more
doaj   +1 more source

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

Advanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai, Md Shakhawath Hossain, Nhat Minh Nguyen, Yongliang Chen, Chaohao Chen, Xiaoxue Xu, Quang Thang Trinh, Toan Dinh, Toan Trong Tran   +8 more
wiley   +1 more source

Increased P wave dispersion in patients with liver steatosis

Medicinski Glasnik, 2010
Aim Hepatic steatosis is associated with metabolic and hemodynamicabnormalities induced by insulin resistance and inflammatory state. Since abnormalities of P wave dispersion may be accompanied with latter issues we evaluated this subject in patients ...
Mustafa Aparci, Zafer Isilak, Omer Uz, Ejder Kardesoglu, Omer Yiginer, Onur Sildiroglu, Murat Yalcin, Namık Ozmen, Bekir Yilmaz Cingozbay, Bekir Sitki Cebeci   +9 more
doaj