Results 81 to 90 of about 176,515 (348)

Take a Ride on a Time Machine [PDF]

open access: yes, 2003
We discuss the possibility to build and operate a time machine, a device that produces closed timelike curves (CTCs). We specify the spacetime structure needed to implement a time machine and assess attempted no-go results against time machines in ...
Wuthrich, Christian   +2 more
core  

Melatonin Alleviates Graft Biliary Fibrosis by Inhibiting VIM+ Cholangiocyte Subcluster via Hypoxia/TGF‐β‐CREM‐VIM Axis

open access: yesAdvanced Science, EarlyView.
Single‐cell RNA sequencing verified the presence of the VIM+ biliary epithelial cell (BEC) in the bile ducts of NAS patients. The hypoxia/TGF‐β‐CREM‐VIM axis mediated phenotypic switch toward VIM+ BEC is validated using a hypoxia/TGF‐β‐stimulated cellular model, a rat liver transplantation model, BEC‐specific Crem conditional knockout rats, and BEC ...
Zhaoyi Wu   +14 more
wiley   +1 more source

To the Question of the Cultural Status of Early Neolithic Sites in the Forest Middle Volga Region

open access: yesАрхеология евразийских степей
The presented article examines the aspect of the cultural affiliation of the Mari sites, attributed by researchers to the Early Neolithic. The existing theories regarding the origin of the tradition are analyzed.
Alexander S. Kudashov
doaj   +1 more source

An optimized multi-proxy, multi-site Antarctic ice and gas orbital chronology (AICC2012): 120--800 ka

open access: yes, 2012
An accurate and coherent chronological framework is essential for the interpretation of climatic and environmental records obtained from deep polar ice cores.
L. Bazin   +21 more
semanticscholar   +1 more source

Implementation of counted layers for coherent ice core chronology [PDF]

open access: yes, 2015
International audienceA recent coherent chronology has been built for four Antarctic ice cores and the NorthGRIP (NGRIP) Greenland ice core (Antarctic Ice Core Chronology 2012, AICC2012) using a Bayesian approach for ice core dating (Datice).
L. Bazin   +24 more
core   +1 more source

Accurately Deciphering Tissue Heterogeneity From Spatial Multi‐Modal and Multi‐Omics With STransformer

open access: yesAdvanced Science, EarlyView.
STransformer is a unified deep learning framework designed to seamlessly accommodate a comprehensive landscape of spatial data. By simultaneously capturing short‐range cellular interactions and tissue‐wide semantic patterns, it extracts robust representations to accurately dissect complex tissue heterogeneity.
Xingyi Li   +9 more
wiley   +1 more source

Short remarks on the occurrences of continental Hippopotamus (Mammalia, Hippopotamidae) in Italy

open access: yesGeologia Croatica, 2015
Several Pleistocene hippopotamid remains have been collected from the Italian Peninsula, but some of them lack any stratigraphic datum or details about the fossiliferous localities.
Luca Pandolfi, Carmelo Petronio
doaj   +1 more source

AICC2012 chronology for ice core EDML

open access: yes, 2013
AICC2012 chronology for ice core ...
Rasmussen, Sune Olander   +43 more
core   +1 more source

The Spatiotemporal Genetic Architecture of Seed Vigor in Upland Cotton

open access: yesAdvanced Science, EarlyView.
Leveraging the semi‐automated SeedRanger platform, we profiled the germination kinetics of 356 cotton accessions at a 30‐min interval. This high‐throughput phenomic approach delineated a temporal genetic network comprising 541 stage‐specific loci. Crucially, functional validation identified FLA2 as a pivotal, auxin‐modulated regulator that orchestrates
Luyao Wang   +32 more
wiley   +1 more source

Measure and material of the 18th- 20th century masonry techniques. Archaeological analysis of the University building in Cagliari (Italy)

open access: yesRestauro Archeologico, 2016
The University building represents a valid benchmark of the 18th century civil architecture in Cagliari. It consists of two separate architectures, initially seat of the Rectorate and of the Tridentine seminary, which over time have taken on a ...
Caterina Giannattasio   +2 more
doaj   +1 more source

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