Results 71 to 80 of about 46,776 (259)

Helmeted hornbill cranial kinesis: Balancing mobility and stability in a high‐impact joint

open access: yesThe Anatomical Record, EarlyView.
Abstract Prokinesis—in which a craniofacial joint allows the rostrum to move relative to the braincase—is thought to confer diverse advantages in birds, mostly for feeding. A craniofacial joint would, however, be a weak link if cranial stability is important. Paradoxically, we have identified a craniofacial joint in helmeted hornbills (Rhinoplax vigil),
Mike Schindler   +8 more
wiley   +1 more source

Sensors Burned Cause Analysis of High-speed EMUs

open access: yes, 2014
In order to solve the malfunctions of bogie gear-box temperature sensor, axle head speed sensor, and axle temperature sensor for breakdown by high voltage at operation process of CRH380BL trains, the EMUs grounding system was studied, and a simple grounding model was built and analyzed, which gave the malfunctions solutions and provided grounding ...
ZHANG Qiumin   +4 more
openaire   +1 more source

Synthesis and properties of nickel-cobalt-boron nanoparticles [PDF]

open access: yes, 2005
morphous cobalt nickel boride nanoparticles were synthesised by chemical reduction synthesis in aqueous solution. Careful control of synthesis conditions and post reaction oxidation enabled the nanoparticles to be converted into a core-shell structure ...
Pankhurst, QA, Parkin, IP, Patel, J
core   +1 more source

T. rex cognition was T. rex‐like—A critical outlook on diverging views of the neurocognitive evolution in dinosaurs

open access: yesThe Anatomical Record, EarlyView.
Abstract A recent debate has emerged between Caspar et al. (2024) and Herculano‐Houzel (2023) on inferring extinct dinosaur cognition by estimating brain neuron counts. While thought‐provoking, the discussion largely overlooks the function of cognition, as well as partly neglects the difficulties involved in estimating neuron numbers, which according ...
Thomas Rejsenhus Jensen   +7 more
wiley   +1 more source

Research on Operation and Maintenance Mode and Maintenance Facility Design of Power Centralized EMU

open access: yes机车电传动, 2021
In order to meet the needs of servicing and maintenance of power centralized EMU, there are more and more new maintenance facilities for power centralized EMU and upgrading and reconstruction projects for existing passenger service center.
Xiangyang TIAN
doaj  

Debt sustainability, structural breaks and non-linear fiscal adjustment: A testing application to Greek fiscal policy [PDF]

open access: yes, 2004
Non-linear public debt adjustment and structural breaks in fiscal policy may affect tests of public debt sustainability. Existing studies address these issues separately. No study has considered both. We address this gap by focusing on Greece, one of the
Arghyrou, MG
core  

Interest Rate Pass-Through to Macroeconomic Variables: The Nigerian Experience [PDF]

open access: yes, 2013
The effectiveness of monetary policy depends on the adjustment response of Central Banks short-term interest rate on the real interest rates charged by commercial banks and ultimately on macroeconomic indicators of investment and consumption in the ...
Alege, P. O., Ogundipe, Adeyomi A.
core   +2 more sources

Osteohistology of two phorusrhacids reveals uninterrupted growth strategy

open access: yesThe Anatomical Record, EarlyView.
Abstract Phorusrhacidae were apex predators that primarily dominated South America ecosystems for at least 40 million years with their imposing size and predatory lifestyle—yet some aspects of their biology remain poorly understood. Osteohistology is a tool for understanding growth dynamics and biomechanical adaptations.
Lotta Dreyer   +2 more
wiley   +1 more source

Diet of bird‐like troodontid dinosaurs: synthesis of a contentious clade

open access: yesBiological Reviews, EarlyView.
ABSTRACT Troodontidae is a clade of small‐to medium‐sized maniraptoran theropods that mainly lived in Laurasia (modern Asia, North America and Europe) during the Jurassic and Cretaceous periods and are believed to have had a variety of diets. The uniqueness of troodontid teeth suggests that they diverged from the typical flesh‐based diet of non‐avian ...
Yui Chi Fan   +2 more
wiley   +1 more source

Entropy‐Driven Innovations: Entropy Stabilized Oxides for High‐Performance Next‐Generation Lithium–Sulfur Batteries

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This article explores high‐entropy‐stabilized oxides (HEOs) as novel functional materials for addressing critical issues in lithium–sulfur (Li–S) batteries, including lithium polysulfide (LPS) shuttling, inadequate conductivity, and slow redox kinetics.
Hassan Raza   +10 more
wiley   +1 more source

Home - About - Disclaimer - Privacy