Results 81 to 90 of about 8,875 (259)

Fiber Bragg Gratings with Micro‐Engineered Temperature Coefficients

open access: yesAdvanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
Fiber Bragg gratings (FBGs) are intrinsically responsive to temperature and strain simultaneously. In this research, low‐loss FBGs with micro‐engineered temperature coefficients are fabricated, utilizing refractive index liquid‐filled microchannels in the cladding.
Zipei Song   +8 more
wiley   +1 more source

Diachronic and/or synchronic variation? The acquisition of sociolinguistic competence in L2 French. [PDF]

open access: yes, 2007
A majority of the early research in Second Language Acquisition focused on diachronic variation in the learners’ interlanguage (IL), that is, differences in the IL linked to a supposed increase in knowledge between two points in time (cf.
Dewaele, Jean-Marc
core  

A Dual‐Emissive DNA‐Templated Silver Nanocluster with Near‐Infrared I and II Emission

open access: yesAdvanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
This study presents a dual‐emissive DNA‐stabilized silver nanocluster with a nanosecond‐lived NIR‐I emission band and a microsecond‐lived NIR‐II emission band. Mass spectrometry establishes that the nanocluster has molecular formula (DNA)2[Ag17]11+. DNA sequence variations reveal critical nucleobases for stabilization, and modifications at the DNA 5 ...
Anna Gonzàlez‐Rosell   +6 more
wiley   +1 more source

Ultrabroadband Excitation of Hot Carriers in Plasmonic Nanorods Revealed by Two‐Dimensional Electronic Spectroscopy

open access: yesAdvanced Optical Materials, EarlyView.
This work dissects the ultrafast response of polydisperse plasmonic nanorods using two‐dimensional electronic spectroscopy, uniquely combining temporal and spectral resolution. Our ultrabroadband pulses cover both transverse and longitudinal nanorods’ resonances, revealing sub‐200‐fs dynamics and distinct broadening mechanisms.
Andrea Schirato   +8 more
wiley   +1 more source

IL1R2 Marks and Sorts a Spermatogonial Stem Cell Population Critical for Restoring Spermatogenesis Upon Interruption in Mammals

open access: yesAdvanced Science, EarlyView.
Spermatogonial stem cells (SSCs) provide critical support to spermatogenesis. Here, the author established Il1r2 as a sorting marker for SSCs, with which further insights into the SSC heterogeneity and dynamic features can be obtained. They also confirmed findings in both mouse and human, thus validating IL1R2 as the surface marker for isolating and ...
Pengyu Li   +19 more
wiley   +1 more source

Indole‐3‐Propionic Acid Improves Alveolar Development Impairment via Targeting VAMP8‐mediated SNAREs Complex Formation in Bronchopulmonary Dysplasia

open access: yesAdvanced Science, EarlyView.
This study aims to evaluate the impact of the tryptophan‐derived metabolite indole‐3‐propionic acid (IPA) on lung development and autophagic flux. IPA alleviates hyperoxia‐induced alveolar arrest by promoting autophagosome‐lysosome fusion via inhibition of VAMP8 phosphorylation, which is suggestive of a promising therapeutic target of BPD.
Beibei Wang   +14 more
wiley   +1 more source

Problems Of Tamil Learners Of English In Forming Negative And Interrogative Structures

open access: yes, 2018
{"references": ["1.\tBright, J. A., and Mc Gregor, G. P. (1970), Teaching English as a Second LangJage. London: Longman Group Limited. 2.\tClose, R. A. (1962), English as a Foreign Language. London, George Aillen A Unwin. 3.\tHamby, A. S. (1992), Oxford Advanced Learners Dictionary of Current English. (4th ed.,). London, OUP. 4.\tLittlewood, William T.
R. Shobana, M. Dinakaran
openaire   +1 more source

Perfluorooctanoic Acid Exposure Causes Macrophage Ammonia Retention and Induces Spontaneous Miscarriages

open access: yesAdvanced Science, EarlyView.
PFOA exposure induces pregnancy loss by promoting glutaminolysis, which further causes ammonia accumulation in macrophages. Cellular ammonia retention results in damage to mitochondria and lysosomes, which leads to cell death eventually. Impaired lysosomes also decrease the secretion of the Cathepsin B (CTSB), and attenuate macrophage infiltration and ...
Yongbo Zhao   +6 more
wiley   +1 more source

Alternative interrogatives and Negative Polarity Items

open access: yesSnippets, 2020
Abenina-Adar, Maayan, Sharvit, Yael
openaire   +1 more source

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