Results 71 to 80 of about 46,241 (293)

Spin and Charge Control of Topological End States in Chiral Graphene Nanoribbons on a 2D Ferromagnet

Advanced Materials, EarlyView.
Chiral graphene nanoribbons on a ferromagnetic gadolinium‐gold surface alloy display tunable spin and charge states at their termini. Atomic work function variations and exchange fields enabe transitions between singlet, doublet, and triplet configurations.
Leonard Edens, Francisco Romero‐Lara, Trisha Sai, Kalyan Biswas, Manuel Vilas‐Varela, Thomas Frederiksen, Diego Peña, Fabian Schulz, Jose Ignacio Pascual   +8 more
wiley   +1 more source

Lead Them to Water and Pay Them to Drink: An Experiment with Services and Incentives for College Achievement [PDF]

High rates of attrition, delayed completion, and poor achievement are growing concerns at colleges and universities in North America. This paper reports on a randomized field experiment involving two strategies designed to improve these outcomes among ...
Daniel Lang, Joshua Angrist, Philip Oreopoulos   +2 more
core  

Promoting Electrochemical Reactions with Dual‐Atom Catalysts for High‐Rate Lithium–Sulfur Batteries

Advanced Materials, EarlyView.
A scalable strategy for synthesizing transition metal–bismuth atomic pairs on carbon nitride to accelerate sulfur redox reactions in lithium–sulfur batteries is presented. Nickel‐bismuth and cobatl‐bismuth catalysts improve rate performance by promoting direct electrochemical transitions and rapid Li2S nucleation, minimizing sulfur loss, and enhancing ...
Jing Yu, Oleg Usoltsev, Irina Martynova, Chen Huang, Zhifu Liang, Ivan Pinto‐Huguet, Canhuang Li, Liqiang Lu, Chaoqi Zhang, Xuan Lu, Kapil Gupta, Marc Botifoll, Laura Simonelli, François Fauth, Jin Yuan Zhou, Jordi Llorca, Yan Lu, Chao Yue Zhang, Jordi Arbiol, Andreu Cabot   +19 more
wiley   +1 more source

Evaluación y control de un brote epidémico de hepatitis viral en escolares guineanos: Eficacia de heberbiovac HB

Revista Cubana de Investigaciones Biomédicas, 2000
Se estudiaron 448 muestras serológicas con el propósito de conocer la etiología de un brote de hepatitis aguda entre jóvenes guineanos que estudiaban en Cuba.
Antonio González Griego, Alina Alerm González, Graciela Delgado, Irma Vega García, Manuel Antón Lolo, Teresa Rodríguez Fernández, Victoria Ramírez Albajé   +6 more
doaj  

Universities and Professions in the Early Modern Period [PDF]

, 2009
This article brings together old and new ideas and information to provide a different perspective than has so far prevailed upon the relationship between the universities and the professions in the early modern period. It focuses not only upon the direct
O'Day, Rosemary
core  

Optoacoustic‐Guided Magnetic Microrobot Platform for Precision Drug Delivery

Advanced Materials, EarlyView.
Optoacoustically guided FePt@ZIF‐8‐based microrobots are designed with high drug loading capacity, controllable locomotion, and deep‐tissue imaging capability. By integrating navigation, drug release, and real‐time monitoring into a single platform, they provide a versatile tool for precise intervention, opening new possibilities for treating ...
Fan Wang, Erdost Yildiz, Xosé Luís Deán‐Ben, Yan Yu, Daniil Nozdriukhin, Wenbin Kang, Shuaizhong Zhang, Jelena Zinnanti, Devin Sheehan, Ren Hao Soon, Shuxin Lyu, Daniel Razansky, Metin Sitti   +12 more
wiley   +1 more source

Rainbow Photonic Crystals: Self‐Assembly of Carbohydrate Bottlebrushes Block Copolymers

Advanced Materials, EarlyView.
Full‐color reflective 1D photonic crystals, capable of a tunable, responsive, and reversible color with high repeatability, are created from the self‐assembly of carbohydrate‐based brush block copolymers (BR01‐04). Abstract Tunable and responsive photonic crystal systems are the subject of great research interest owing to their ability to actively ...
Hong Li, Muhammad Mumtaz, Takuya Isono, Toshifumi Satoh, Cheng‐Liang Liu, Wen‐Chang Chen, Redouane Borsali   +6 more
wiley   +1 more source

Ferroelectrics Hybrids: Harnessing Multifunctionality of 2D Semiconductors in the Post‐Moore Era

Advanced Materials, EarlyView.
In this Review, the state of art of ferroelectric hybrid systems—combining ferroelectrics, 2D semiconductors, and molecular switches is presented—as next‐generation platforms for high‐density, multifunctional electronics. By discussing 2D FeFET applications, nanoscale material downscaling, M3D integration, and emerging ferroelectrics, it highlights ...
Haixin Qiu, Xiaoshi Qian, Dahong Qian, Paolo Samorì   +3 more
wiley   +1 more source

3D Microprinting of Structures with Lanthanide‐Based Fluorophores on Optical Fibers for Multiplexed Sensing

Advanced Optical Materials, EarlyView.
Incorporating lanthanide‐based fluorophores into commercial resists for femtosecond direct laser writing enables a novel platform for multiplexed sensing. Porous, periodic, and solid luminescent microstructures fabricated directly on optical fiber tips are presented.
Valese Aslani, Shaghayegh Baghapour, Stephen C. Warren‐Smith, Wenqi Zhang, Esmat Ebadati, Sally E. Plush, Alois M. Herkommer, Andrea Toulouse, Shahraam Afshar V.   +8 more
wiley   +1 more source

A Compact Optical Sensor to Self‐Assess Skin Health after Sun Exposure

Advanced Sensor Research, EarlyView.
This work presents a portable, low‐cost device capable of detecting changes in the skin associated with excessive sun exposure through reflectance measurements. In vitro validation experiments in skin‐mimicking tissue phantoms showed the device can detect relative pigmentation changes as small as 5%.
Ying Zhi Cheong, Mingjie Yang, Shanmuga Sundar Dhanabalan, Peter Francis Mathew Elango, Sharath Sriram, Blanca del del Rosal, Madhu Bhaskaran   +6 more
wiley   +1 more source