Results 41 to 50 of about 2,645,891 (207)

Avances en la identificación de obsidianas utilizadas en el valle de Hualfín (Depto. de Belén, Catamarca, Argentina) durante el período de Desarrollos Regionales/Inka

Estudios Atacameños, 2014
En este trabajo se presentan los resultados del estudio macroscópico y geoquímico realizado sobre 10 muestras de obsidiana procedentes de siete sitios arqueológicos de las localidades de Asampay y de La Ciénaga de Abajo (valle de Hualfín, Catamarca ...
Marina Cecilia Flores, Bárbara María Balesta   +1 more
doaj   +8 more sources

Mechanical Activation of Piezo1 Drives Osteoarthritis Through Kdm5c‐Mediated Epigenetic Silencing

Advanced Science, EarlyView.
Excessive mechanical stress activates Piezo1, triggering Ca2+‐dependent cytoskeletal forces that deform the nucleus and reduce H3K4me3. Kdm5c demethylates H3K4me3 at Col2a1 and Runx3 promoters. Kdm5c knockout rescues degradation. Repurposed telmisartan directly inhibits Kdm5c, blocking this axis and showing disease‐modifying efficacy in mouse OA models
Tianyou Kan, Xuran Li, Han Wang, Lin Sun, Yao Wang, Jiangdong Wu, Junqi Cui, Yiqi Yang, Kai Yuan, Linyang Chu, Liao Wang, Hanjun Li, Mengning Yan, Zhifeng Yu   +13 more
wiley   +1 more source

Facile Fabrication of Low‐Impedance, Highly Conformal Epidermal Electrodes Based on Laser‐Induced Graphene–Silver Nanocomposites

Advanced Science, EarlyView.
A facile laser‐induced graphene–silver nanocomposite strategy enables ultrathin epidermal electrodes with low impedance, high conductivity, and excellent mechanical robustness. The porous LIG–Ag conductive network mechanically interlocked with SEBS provides stable, motion‐resistant biopotential monitoring, enabling high‐fidelity ECG, EMG, and EEG ...
Jiuqiang Li, Senhao Zhang, Kai Guo, Donghai Qiu, Juzhong Zhang, Hongbo Yang, Huanyu Cheng   +6 more
wiley   +1 more source

Quality Thresholds for Angiogenesis Under Acoustic Manipulation in Engineered Vascular Tissues

Advanced Science, EarlyView.
Defined biological and physical quality thresholds achieved through acoustic manipulation regulate cellular alignment and spatial organization, promoting self‐assembling vasculature, extracellular matrix deposition, and angiogenic responses, thereby establishing critical acoustic patterning requirements for engineered vascular tissue development in ...
Oscar O'Dwyer Lancaster‐Jones, Russell Quinn, Niloofar Khoshdel Rad, Kilian Paul, Andrea Frank, Daniela F. Duarte Campos   +5 more
wiley   +1 more source

Aşezarea tripoliană tardivă de lângă satul Voloviţa (raionul Soroca, Republica Moldova) / Late Tripolian settlement near the village of Voloviţa (Soroca District, Republic of Moldova)

Tyragetia, 2014
The article publishes the materials from the surface of a new Late Tripolian settlement in the Middle Dniester region. Apart from pottery, the abundance of stone implements is quite remarkable.
Stanislav Ţerna
doaj  

Halide Perovskite: A Rich Source of Thermal Insulator

Advanced Science, EarlyView.
Halide perovskites exhibit ultralow thermal conductivity driven by intrinsic lattice softness and strong anharmonicity, falling below conventional defect‐engineering limits. Weak metavalent bonding, A‐site rattling, and dynamic octahedral tilting drive phonon scattering to the Ioffe–Regel limit, where wave‐like tunneling replaces particle‐like ...
Haolin Ye, Bangzhi Ge, Yuan Yu, Chongjian Zhou   +3 more
wiley   +1 more source

A Comparative Analysis of Wood Residues on Experimental Stone Tools and Early Stone Age Artifacts: A Koobi Fora Case Study [PDF]

, 2002
There have been recently reported plant residues on stone tools from the Okote Member, Koobi Fora, Kenya. No comparative microscopy, however, was available for more specific identification of the residues.
Herrygers, Christa
core  

Chalcolithic and Middle Bronze Age obsidian industries at Karmir Sar: A mountain view on the lithic economies of the Southern Caucasus

Journal of Lithic Studies, 2018
The high-altitude site of Karmir Sar is located around 2850 m a.s.l. on the southern slopes of Mt. Aragats (Armenia). Numerous stone structures (including vishaps, cromlechs, stone enclosures) are found all over the 40 ha-sized meadow, out of which three
Christoph Purschwitz
doaj   +1 more source

Chronic HBV Infection Disrupts CCL5‐Secreting cNK Cells and Attenuates Liver Accumulation and Activation of DCs and HBV‐Specific T Cells

Advanced Science, EarlyView.
ADORA2A activation suppresses NFκB‐dependent CCL5 production in cNK cells during chronic HBV infection, disrupting intrahepatic DC recruitment and HBV‐specific CD8+ T‐cell differentiation and function. Targeting the ADORA2A/NFκB/CCL5 axis restores antiviral immunity and facilitates HBV clearance.
Ailu Yang, Yucan Wang, Yating Yu, Jing Wu, Cuiping Bao, Zixuan Wang, Qiuju Han, Zhigang Tian, Jian Zhang, Huajun Zhao   +9 more
wiley   +1 more source

Modes of chipped stone tool production: the early farming societies in the North-Western Pontic region

Journal of Lithic Studies
The chipped stone assemblages of early farmers in the south of the Eastern Europe take several forms. 1) They can have a developed laminar component, with production wastes underrepresented, with a high percentage of retouched items (mostly blades with ...
Dmytro Kiosak
doaj   +1 more source