Results 101 to 110 of about 6,692 (310)

A wooden cylinder seal at Norwich Castle Museum [PDF]

open access: yes, 2015
One of the objects in the Egyptian collection at Norwich Castle Museum is a wooden cylinder seal, originally part of a nineteenth-century private collection, but later donated to the museum.
Faye Kalloniatis
core   +1 more source

Super‐Resolution Ultrasound Based Cell Tracking With Polymeric Nanobubbles

open access: yesAdvanced Materials, EarlyView.
This study presents a super‐resolution ultrasound platform for tracking cells in vivo. Biocompatible polymeric nanobubbles are used as highly echogenic intracellular labels. Following the injection of cells and microbubbles, ultrasound localization microscopy (ULM) can dynamically match the microvascular architecture and individual cell trajectories ...
Junlin Chen   +19 more
wiley   +1 more source

Analisa Kerusakan Hydraulic Cylinder Boom Pada Excavactor PC 200-8 [PDF]

open access: yes, 2022
Boom cylinder serves to move the boom in the maximum position by utilizing hydraulic oil. The boom cylinder is a hydraulic actuator located on the boom, its function is to move the boom up and down.
Nugraha, Arief Cahya   +1 more
core  

On‐Water Surface Synthesis of 2D Conjugated Metal–Organic Framework Films With Controllable Layer Orientation Enabling High‐Performance Chemiresistive Sensing

open access: yesAdvanced Materials, EarlyView.
Layer orientation dictates charge transport in 2D conjugated metal–organic frameworks, yet controllable methods remain scarce. We report surfactant monolayer‐assisted on‐water synthesis of cm2‐scale Ni‐HHTP films with programmable face‐on and edge‐on orientations.
Jianjun Zhang   +22 more
wiley   +1 more source

Canaanite Cylinder Seal (replica) [PDF]

open access: yes
Canaanite cylinder seal of a man and animal resin replica from the Middle Bronze Age (1850–1550 BCE).https://digital.kenyon.edu/arthistorystudycollection/2826/thumbnail ...

core  

High Center‐of‐Mass, Multi‐Legged Soft Robots Powered by Geometrically Encoded Liquid Crystal Elastomer Arc Appendages

open access: yesAdvanced Materials, EarlyView.
Inspired by the octopus and the golden wheel spider, soft robots with liquid crystal elastomer arc fibers as appendages are fabricated to transcend surface constraints through an elevated center of mass and minimal contact footprints. By leveraging curvature‐encoded deformation‐recovery cycles, these robots exhibit contractile, torsional, and flexural ...
Jong Bin Kim   +5 more
wiley   +1 more source

Development and Application of Packer for CO2 Flooding

open access: yesShiyou jixie, 2018
Aiming at the problems of packer during CO2 flooding such as easy corrosion, poor gas sealing effect, short working life and pull up difficulty, a CO2 flooding packer was developed.
Huang Xiaomeng   +3 more
doaj  

Fabrication of Cu-Doped Diamond-like Carbon Film for Improving Sealing Performance of Hydraulic Cylinder of Shearers

open access: yesC
During shearer operation, the piston rod is susceptible to wear from the invasion of pollutants, thus ruining the sealing ring in the hydraulic cylinder.
Yanrong Yang   +3 more
doaj   +1 more source

Old Babylonian Cylinder Seal (replica) [PDF]

open access: yes
This is a replica of an Old Babylonian cylinder seal from about 1900 BCE.https://digital.kenyon.edu/arthistorystudycollection/2839/thumbnail ...

core  

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

open access: yesAdvanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu   +8 more
wiley   +1 more source

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