Results 31 to 40 of about 85,587 (290)

Beyond Electrostatics: Anion‐π+ Orbital Hybridization Underpins High‐Performance Chloride Storage in Poly(arylamine) Organic Cathodes

Advanced Science, EarlyView.
The fundamental nature of anion storage in p‐type organic cathodes is elucidated using rigid poly(arylamine) frameworks. This study reveals a hybrid covalent‐ionic mechanism for anion‐π+ interactions, driven by synergistic orbital hybridization and electrostatic attraction.
Tiantian She, Jiena Weng, Jie Wang, Qiao Xi, Yangyang Zhang, Zijie Zhang, Zongqiong Lin, Wei Huang   +7 more
wiley   +1 more source

Bypassing Pre‐Photoactivation in High‐Barrier Polyamide for Robust and Scalable Organic Persistent Luminescence

Advanced Science, EarlyView.
A universal paradigm resolves the trade‐off between ambient stability and barrier properties in organic persistent luminescent (OPL) polymers. By interlocking chromophores within a high‐barrier MXD6 matrix, we achieved no Pre‐photoactivation OPLs with exceptional long‐term stability in water.
Yunlong Yang, Sha Liu, Shilin Bo, Longming Jin, Baijun Tang, Zhiying Guo, Chengtao Gao, Xionggang Wang, Yuejun Liu, Qiang Zheng, Zi Liang Wu   +10 more
wiley   +1 more source

Factores de riesgo asociados a las lesiones premalignas en pacientes del consultorio 26. Roberto Reyes. Bayamo. 2016

Multimed, 2017
RESUMEN Se realizó una investigación observacional del tipo analítica de caso y control para determinar qué factores de riesgo influyen en la aparición de lesiones premalignas en pacientes de 15-59 años en el consultorio 26 de Roberto Reyes, Bayamo ...
Ibrahim Andrés Rogert Alcolea, Alfredo Milanés Chalet, Hortensia Cristina Labrada Fernández, Liset Carrazana López, Beatriz Castillo Aguilar   +4 more
doaj  

Caracterización de los síntomas de angina en hombres adultos con cateterismo cardíaco positivo para enfermedad coronaria

Revista Colombiana de Cardiología, 2013
en Colombia la enfermedad coronaria ocasionó 29.394 muertes en 2011 ocupando el primer lugar como causa de mortalidad, según el Departamento Nacional de Estadística.
Clemencia Bernal, RN., Esp, Adriana Pacheco, RN., Esp, Jhoanna Núñez, RN., Esp, Fanny Rincón, RN., Mg   +3 more
doaj   +1 more source

Strain‐Adaptive Dielectric Metamaterials via Bioinspired “Ligament‐Bone” Architecture for Ultrahigh‐Energy Capacitive Storage

Advanced Science, EarlyView.
A bioinspired strain‐adaptive ligament‐bone architecture achieves record‐high energy density of 26.1 J cm−3 and 90% efficiency at 600 MV m−1, coupled with a Young's modulus of 2.13 GPa. ABSTRACT Polymer dielectrics for capacitive energy storage face fundamental trade‐offs between breakdown strength, energy density, efficiency, and mechanical robustness.
Jian Wang, Xinyu Wang, Jiabao Wang, Biyun Peng, Yifei Zhang, Ning Zhu, Xin Hu   +6 more
wiley   +1 more source

Factores de riesgo para enfermedad cardiovascular en aspirantes a una empresa de obras civiles en Yopal - Casanare, 2010

Revista Colombiana de Cardiología, 2012
en Colombia, según estadísticas recientes, las enfermedades cardiovasculares representan la segunda causa de mortalidad. En tal sentido, para Casanare, en 2009, la mortalidad fue de 54,3%.
Mónica A. Calderón, Esp, Sandra L. Aranguren, Esp, Néstor R. Gerónimo, MD, MSc, Oneida Castañeda, Esp   +3 more
doaj   +1 more source

Oxygen Vacancy‐Mediated Bi─O Unsaturation Coordination in BiOCl for Efficient Photocatalytic Water Purification

Advanced Science, EarlyView.
The incorporation of oxygen vacancies (OVs) presents a viable strategy for fine‐tuning the photocatalytic prowess of BiOCl. A reliable hydrogen annealing reduction technique is employed to precisely design OVs, thereby optimizing the light absorption capacity, as well as the efficiency of carrier migration and separation in BiOCl.
Shuaihao Ma, Jianglong Kong, Shidong Zhang, Wentao Li, Ling Yan, Deng Long, Xinglin Yu, Dawei Wang, Zheng Han, Sihan Ma, Lin Wang, Guang Ran   +11 more
wiley   +1 more source

Molecularly Engineered Wing‐Shaped Azobenzene Memristors for Logic‐in‐Memory and Edge Visual Intelligence

Advanced Science, EarlyView.
Rational engineering of terminal substituents in symmetric azobenzene‐based molecules enables precise control over conformationally coupled charge‐transfer processes. This design yields tunable nonvolatile resistive memory behaviors, ranging from write‐once‐read‐many‐times (WORM) to rewritable switching.
Yanze Liu, Tao Han, Jiahui Ding, Hong Lian, Lingling Yao, Zhaoxin Xu, Xingyu Zhang, Shuanglong Wang, Jiangnan Xia, Tianchi Zhang, Weiwei Kang, Qingchen Dong   +11 more
wiley   +1 more source

Unveiling Activation Process of C═N Cathode for High‐Performing Zinc‐Organic Batteries

Advanced Science, EarlyView.
A high‐performance organic cathode of DPPT has been designed for aqueous zinc‐ion batteries (ZIBs), showing ultralong cycle life of 45 000 cycles. Besides, flexible DPPT ZIBs with stable capacity are applied in wearable NH3 sensors. Notably, the activation mechanism of the transformation of DPPT‐eight proton into DPPT is proposed and proved which ...
Xiaodong Geng, Zhangyu Wang, Weiyao Bi, Qian Zhao, Hongting Ma, Kai Yang, Ying Liu, Zhiqian Li, Qinghua Deng, Dan Zhao, Yuqian Jiang, Nan Zhu   +11 more
wiley   +1 more source

Intervención educativa sobre factores de riesgos para lesiones premalignas de la cavidad bucal. Bayamo. Enero-marzo. 2016.

Multimed, 2017
RESUMEN Se realizó un estudio experimental de intervención educativa del tipo antes-después con pacientes de 35-60 años. El universo estuvo constituido por 120 pacientes, con una muestra no probabilística intencional de 80 expuestos a factores de riesgo,
Ibrahim Andres Rogert Alcolea, Nilber Martínez Sánchez, Karen Palomino Rodríguez, Eliana Carrazana Montejo, Yurenia de los Ángeles Pompa Sánchez   +4 more
doaj