Results 131 to 140 of about 1,310,981 (293)

A Bioinspired Underwater Soft Robot for Active Intravesical Liquid Delivery and Mixing

Advanced Intelligent Systems, EarlyView.
A bioinspired underwater soft robot is reported that integrates an elastic strain energy‐driven soft robotic pump with a programmable flexible magnetic valve, enabling remotely controlled, programmable, and sustained liquid release and mixing. This functionality is enabled by the synergistic integration of elastic strain energy‐driven pumping and ...
Jacob Katona, Sage Bernstein, Boyang Xiao, Amie Zhang, Ellen Lu, Evan Ticknor, Jeffrey J. Tosoian, Xiaoguang Dong   +7 more
wiley   +1 more source

Thin channel-channel welded cross-beams under cyclic bending

, 2008
Fatigue tests were carried out on welded thin-walled Channel-Channel cross-beams. Cyclic bending load was applied to the bottom member. Constant stress amplitude loading was applied to the specimens resulting in crack initiation and propagation leading ...
Mahendran, Mahen, Zhao, Xiao-Ling, Mashiri, Fidelis R.   +2 more
core  

Development of an Inchworm‐Like Dual‐Balloon‐Assisted Colonoscopic Robot Based on a Two‐Segment Extensible Continuum Section

Advanced Intelligent Systems, EarlyView.
This work presents an inchworm‐like dual‐balloon‐assisted colonoscopic robot (IDCR) based on a rod‐driven two‐segment continuum section. The IDCR enables the active straightening of the sigmoid colon through an inchworm‐like locomotion strategy, thereby avoiding loop formation.
Dezhi Song, Bohan Leng, Yi Liu, Xiangyang Yu, Chaoyang Shi   +4 more
wiley   +1 more source

Non‐Palpable Contraceptive Implant Evaluation and Removal: A Protocol That Can Be Adopted for Practice in Low‐Middle Income Countries

Public Health Challenges
Currently, there are four implants that a family planning provider might encounter for removal: Jadelle (two radiopaque, flexible cylindrical implants, 43 mm × 2.5 mm, consisting of dimethylsiloxane/methylvinylsiloxane copolymer core enclosed in thin ...
Abraham Fessehaye Sium, Amani Nureddin Abdu, Jaclyn M. Grentzer, Matthew F. Reeves, Sarah Prager   +4 more
doaj   +1 more source

Autonomous Charging and Battery Swapping for Unmanned Aerial Vehicles: A Review

Advanced Intelligent Systems, EarlyView.
This review evaluates major autonomous charging and battery swapping methods for unmanned aerial vehicles (UAVs) against a single question: how close each is to sustained unattended operation. Rather than ranking them by charging performance, it identifies the limitation that most restricts each method, and briefly outlines the supporting technologies ...
Zelin Wu, Yuanwen Zhang, Xiangdong Meng, Guangyu Zhang, Huiwen Zhang, Yuquan Leng   +5 more
wiley   +1 more source

On the modelling of distorted thin-walled stiffened panels via a scale reduction approach for a simplified structural stress analysis

To reduce the weight of cruise ships, the shipbuilding industry is interested in thin-walled superstructures, where the thickness of butt-welded plates in stiffened panels is under 5 mm.
Mancini, Federica, Remes, Heikki, Romanoff, Jani   +2 more
core   +1 more source

Syntheses, X‐ray Crystal Structures, and Raman Spectra of Self‐Assembled XeO3 Chain and Network Complexes of Polytopic sp2‐ and sp3‐Nitrogen Bases

Angewandte Chemie, EarlyView.
Supramolecular 1‐D, 2‐D, and 3‐D networks comprised of ‐(‐O═Xe(O2)‐‐)‐∞ and ‐(‐Xe(O2)O‐‐‐HO(H)‐‐)‐∞ chains coordinated to polytopic N‐base ligands were synthesized and structurally characterized by X‐ray crystallography. Their Xe‐‐‐N and Xe‐‐‐O bonds are characteristic of σ–hole bonds in which the nucleophilic Lewis base sites of the N‐ligands, H2O ...
James T. Goettel, Hélène P. A. Mercier, Gary J. Schrobilgen   +2 more
wiley   +1 more source

Modification of the Formula of Papkovich-Föppl for a Compressed Thin-Walled Rod with an Open Profile

IOP Conference Series: Materials Science and Engineering, 2018
The article is about thin-walled rods of open cross-section compressed by multiparameter load. It is known that the critical multiparameter load factor can be calculated by the formula of Papkovich-Foppl. In this article, the formula is modified so that it takes into account the change in cross-section dimensions of the rod. The modified formula can be
openaire   +1 more source

MicroCT reinvestigation of the only articulated fossil anostomid fish reveals synonymy of Arhinolemur Ameghino, 1898 and Megaleporinus Ramirez et al., 2017

The Anatomical Record, EarlyView.
Abstract Arhinolemur scalabrinii† Ameghino, 1898 was originally described as a strepsirrhine primate (Mammalia) but has been recognized as an anostomid fish since 2012. It remains the only extinct anostomid species known from complete cranial material.
Karen M. Panzeri, Humberto L. Andrelino, Sergio Bogan, José P. O'Gorman, Federico Agnolín, Brian L. Sidlauskas, Nahuel Vega, Agustín G. Martinelli, José L. Birindelli   +8 more
wiley   +1 more source

Redescription of the Triassic cynodont Cistecynodon parvus and reassessment of its phylogeny

The Anatomical Record, EarlyView.
Abstract Cynodontia is an important subclade of Therapsida that first occurred in the late Permian. It includes extinct subclades which are the non‐mammaliaform cynodonts and Mammaliaformes, with the latter ultimately giving rise to crown mammals. The systematics of non‐mammaliaform cynodonts has been extensively studied and is relatively well‐resolved,
Erin S. Lund, Frederik P. Wolvaardt, Roger M. H. Smith, Jaganmoy Jodder, Julien Benoit   +4 more
wiley   +1 more source