Results 141 to 150 of about 52,574 (296)

Quantifying Strain and Its Effect on Charge Transport in Ge/Si Core/Shell Nanowires

open access: yesAdvanced Science, EarlyView.
This work demonstrates strain engineering in Ge/Si core–shell nanowires (CS NWs) by tuning the Ge core‐Si shell dimensions. Polarization‐resolved µ‐Raman and geometrical phase analysis quantify the resulting strain. Electronic transport measurements demonstrate record hole mobilities up to 25 400 cm2/Vs, highlighting these Ge/Si CS NWs as a promising ...
Aswathi K. Sivan   +14 more
wiley   +1 more source

Adquisición de publicaciones electrónicas en consorcios de bibliotecas Acquisition of electronic journals in libraries consortia

open access: yesInformación, Cultura y Sociedad, 2004
El incremento en los precios de las suscripciones a publicaciones periódicas en los últimos años, motivó el hecho de que las bibliotecas universitarias intentaran solucionar este problema, uniéndose y formando consorcios de bibliotecas, dónde, además de ...
Silvia Contardi
doaj  

Competition and cooperation: Libraries and publishers in the transition to electronic scholarly journals

open access: yes, 1999
The conversion of scholarly journals to digital format is proceeding rapidly, especially for those from large commercial and learned society publishers. This conversion offers the best hope for survival for such publishers.
Odlyzko, Andrew
core   +2 more sources

In Situ Polyurea Integration for Self‐Healing, Durable Transparent Electromagnetic‐Interference Shielding Film

open access: yesAdvanced Science, EarlyView.
A steric‐hindrance molecular engineering strategy uses dimethyl maleate (DMM) to convert poly(1,4‐butanediol) bis(4‐aminobenzoate) (PBDAB) into a precursor with reduced reactivity via Michael addition, thereby retarding the curing process to form a transparent, ultraflexible, and self‐healable secondary‑amine polyurea (PuSA) with a crosslinked network.
Sinan Zheng   +10 more
wiley   +1 more source

Ten Ways to Cut Costs in New York Public Schools without Hurting the Classroom [PDF]

open access: yes, 2011
New York State instituted dramatic cuts to public education two years in a row. Across the state, school districts are cutting programs, teachers, and educational opportunities for students.

core  

Toward Predictive Theory in Single‐Atom Catalysis

open access: yesAdvanced Science, EarlyView.
A lifecycle‐oriented framework reframes modeling in single‐atom catalysis. By combining ensemble‐based descriptions with explicit validation against experimental observables, the approach defines the scope of theory across catalyst synthesis, activity, stability, and safety, clarifying where quantitative insight is possible and where interpretation ...
Andrea Ruiz‐Ferrando   +3 more
wiley   +1 more source

High‐Power Terahertz Emission from Picosecond Nano‐Plasma Switching Driven by Secondary Electron Emission Avalanche

open access: yesAdvanced Science, EarlyView.
A nano‐plasma device enables watt‐level on‐chip THz generation through picosecond switching triggered by secondary electron emission avalanche. An ultra‐dense electron sheet initiates nano‐plasma formation within a ∼100 nm gap, driving rapid energy release into an integrated resonator.
Guangyu Sun   +4 more
wiley   +1 more source

Decoding the Mechanism of Action of a Parasite TGFβ Antagonist Inspires the Creation of Cell‐Type‐Specific TGFβ Modulators

open access: yesAdvanced Science, EarlyView.
The mammalian TGFβ interacts with ubiquitously expressed TGFBR1 and TGFBR2, and current TGFβ‐targeting agents are non‐cell‐selective. The cooperative interaction of the modular parasite TGFβ antagonist with multiple host (co‐)receptors empowers the design of TGM chimeras and bispecific antibodies that activate or inhibit TGFβ signaling in a cell ...
Maarten van Dinther   +13 more
wiley   +1 more source

Procuring e-books for the virtual learning environment [PDF]

open access: yes
This paper discusses the explosion in the use of electronic resources by students and the development of e-books. The existing high usage will be intensified as virtual learning environments become the primary means of interaction between students and ...
Ball, David
core  

Scalable Engineering of Bio‐Manufactured Extracellular Vesicles for Selective Delivery in Ovarian Cancer Patient‐Derived Models

open access: yesAdvanced Science, EarlyView.
Engineered extracellular vesicles displaying Ephrin‐B2 selectively target Ephrin‐B4–expressing ovarian cancer cells, enabling precise delivery in patient‐derived models. This scalable bio‐manufacturing platform reveals a versatile strategy to exploit Ephrin signaling for highly specific therapeutic payload delivery and motivates exploration of tailored
Nihar Godbole   +17 more
wiley   +1 more source

Home - About - Disclaimer - Privacy