Results 81 to 90 of about 384,467 (314)

Il viaggio settentrionale di Francesco Negri

open access: yesItalies, 2014
Né en 1623, Francesco Negri est considéré comme le premier touriste à avoir atteint le Cap Nord motivé par une pure soif de connaissance. Il s’aventura jusque dans ces régions âpres à une époque où la mode considérait que l’exotique se trouvait en ...
Stefano Magni
doaj   +1 more source

The Study of Two-dimensional Polytropic Stars [PDF]

open access: yes, 2015
In this article we have studied the structure of hypothetical two-dimensional polytropic stars. Considering some academic interest, we have developed a formalism to investigate some of the gross properties of such stellar objects.
Chakrabarty, Somenath, De, Sanchari
core  

Poster Presentation: Xcerpt and XChange – Logic Programming Languages for Querying and Evolution on the Web [PDF]

open access: yes, 2004
age Xcerpt and provides advanced, Web-specific capabilities, such as propagation of changes on the Web (change) and event-based communications between Web sites (exchange).
Bry, François   +2 more
core   +3 more sources

Golden‐Ratio–Guided Aperiodic Architected Metamaterials with Simultaneously Enhanced Strength and Toughness

open access: yesAdvanced Functional Materials, EarlyView.
Guided by the golden ratio, a class of aperiodic architected metamaterials is introduced to address the intrinsic trade‐off between strength and toughness. By unifying local geometric heterogeneity with global order, the golden‐ratio‐guided aperiodic architecture promotes spatial delocalization of damage tolerence regions, leading to more tortuous ...
Junjie Deng   +9 more
wiley   +1 more source

Charge‐Induced Morphing Gels for Bioinspired Actuation

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces a novel electroactive actuation mechanism that enables the gel material to generate substantial and reversible shape‐changing while preserving topological and isochoric (volumetric) equivalence. The resultant morphing behaviors can mimic the movements of muscle‐driven organelles in nature, including cilia‐like beating and ...
Ciqun Xu   +4 more
wiley   +1 more source

Boston University Jazz Lab Band, October 16, 1989 [PDF]

open access: yes, 1989
This is the concert program of Boston University Jazz Lab Band performance on Monday, October 16, 1989 at 8:00 p.m., at the Tsai Performance Center, 685 Commonwealth Avenue, Boston, Massachusetts. Works performed were Basie Straight Ahead by Count Basie,
School of Music, Boston University
core  

Reconfigurable Magnetic Soft Microrobot for Acoustically Triggered Targeted Bacterial Sterilization

open access: yesAdvanced Functional Materials, EarlyView.
Reconfigurable magnetic soft microrobots integrate in situ‐grown piezoelectric zinc oxide nanorods that produce reactive oxygen species upon acoustic excitation. Combining magnetically guided transport with thermally induced planar reconfiguration, the microrobots achieve targeted delivery and enhanced bacterial sterilization through efficient on ...
Quan Gao   +12 more
wiley   +1 more source

Electroactive Liquid Crystal Elastomers as Soft Actuators

open access: yesAdvanced Functional Materials, EarlyView.
Electroactive liquid crystal elastomers (eLCEs) can be actuated via electromechanical, electrochemical, or electrothermal effects. a) Electromechanical effects include Maxwell stress, electrostriction, and the electroclinic effect. b) Electrochemical effects arise from electrode redox reactions.
Yakui Deng, Min‐Hui Li
wiley   +1 more source

Cross-sectional study about the activities for various occupational groups on board during different voyage stages

open access: yesJournal of Occupational Medicine and Toxicology, 2019
Background Employees on board must be highly qualified in order to be able to independently meet the different work requirements during the three voyage stages of a ship (port stay, river and sea passage).
Marcus Oldenburg, Hans-Joachim Jensen
doaj   +1 more source

Junk Raft: an Ocean Voyage and a Rising Tide of Activism to Fight Plastic Pollution by Marcus Eriksen [PDF]

open access: yes, 2019
Review of Marcus Eriksen\u27s Junk Raft: an Ocean Voyage and a Rising Tide of Activism to Fight Plastic ...
Athens, Allison K.
core   +1 more source

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