Results 111 to 120 of about 106,210 (348)

Sacrificial Biofabrication for Vascularization: Concept, Materials, Technologies, and Applications

Advanced Materials, EarlyView.
Vasculature is indispensable for tissue viability in regenerative medicine. The sacrificial biofabrication enables precise fabrication of vascular channels by using temporary templates that are subsequently removed. This review defines the concept and delves into sacrificial materials, surrounding materials, fabrication technologies, and biomedical ...
Jiezhong Shi, Chunyao Wang, Xuan Mei, Ben Zhang, Junxi Wu, Rylie A. Green, Yu Shrike Zhang, Wenmiao Shu   +7 more
wiley   +1 more source

The Cylinders of Four-stroke Engines [PDF]

, 2016
Tématem této bakalářské práce jsou pracovní válce čtyřdobých pístových spalovacích motorů. První část práce obecně popisuje princip čtyřdobého pracovního cyklu, konstrukci zážehových a vznětových motorů.
Vanda, Marek
core  

Energetics and performance of a microscopic heat engine based on exact calculations of work and heat distributions

, 2009
We investigate a microscopic motor based on an externally controlled two-level system. One cycle of the motor operation consists of two strokes. Within each stroke, the two-level system is in contact with a given thermal bath and its energy levels are ...
Artem Ryabov, Esposito M Kawai R Lindenberg K van den Broeck C, Evans D J, Imparato A, Imparato A, Maes C, Manosas M, Mario Einax, Petr Chvosta, Philipp Maass, Schmiedl T, Slater L J, Slater L J, Subrt E, Viktor Holubec   +14 more
core   +1 more source

Magnetic Milli‐Spinner for Robotic Endovascular Surgery

Advanced Materials, EarlyView.
The magnetic milli‐spinner, with its unique structural design, achieves rapid and stable navigation through complex vasculature at speeds up to 23 cm·s−1. It further enables multifunctional treatment, including localized suction and shear for efficient clot removal, targeted drug delivery, and in situ embolization for aneurysm therapy, establishing it ...
Shuai Wu, Yilong Chang, Sophie Leanza, Jay Sim, Lu Lu, Qi Li, Diego Stone, Ruike Renee Zhao   +7 more
wiley   +1 more source

THE WORKING PROCESS RESEARCH OF COMPACT FOUR-STROKE PETROL INTERNAL COMBUSTION ENGINE PROCESS

RUDN Journal of Engineering Research, 2015
The reasons of choice, advantages and description of compact stand for receiving four-stroke engine characteristics and all of the components are adduced in the article.
S V Gusakov, M V Azanov, A A Savastenko
doaj  

Rapid Glass‐Substrate Digital Light 3D Printing Enables Anatomically Accurate Stroke Patient‐Specific Carotid Artery‐on‐Chips for Personalized Thrombosis Investigation

Advanced Materials, EarlyView.
A rapid glass‐substrate 3D microfabrication method creates anatomically accurate carotid artery‐on‐a‐chip models from stroke patient scans in 2 h. These miniaturized devices replicate patient‐specific blood vessel geometry and flow patterns, enabling real‐time imaging of clot formation under controlled injury.
Yunduo Charles Zhao, Zihao Wang, Arian Nasser, Allan Sun, Zhao Wang, Yingqi Zhang, Jianfang Ren, Haimei Zhao, Nicole Alexis Yap, Yinyan Wang, Zhiyong Li, Ken S Butcher, Freda Passam, Timothy Ang, Lining Arnold Ju   +14 more
wiley   +1 more source

Current trends in the development of engines for unmanned aerial vehicle

Авіаційно-космічна техніка та технологія
The subject of this study is the current state and prospects for the development of the market for unmanned aerial vehicles (UAVs) and power plants. The purpose of this work was to identify trends in the development of UAV engines of various classes ...
Anatolii Savchenko, Dmytro Obodets
doaj   +1 more source

Parametric analysis for performance and emissions of gasoline direct injection engine using mathematical modelling [PDF]

Engineering and Technology Journal
The study aims to estimate the performance and emissions of a gasoline direct injection (GDI) engine by analyzing parameters such as engine speed between 2000 and 6000 rpm, compression ratio (CR) between 9 and 13, and the start of ignition between 140 ...
Omar Yousif, Mahmoud Mashkour
doaj   +1 more source

Peptide Amphiphiles Hitchhike on Endogenous Biomolecules for Enhanced Cancer Imaging and Therapy

Advanced Materials, EarlyView.
Weakly assembled peptide amphiphile nanostructures disassemble in circulation and reassemble with blood biomolecules, mainly lipoproteins. Binding to blood biomolecules prolongs blood circulation and improves accumulation in solid tumors. In the tumor microenvironment, peptide amphiphiles assemble with cholesterol‐rich domains of cell membranes ...
Li Xiang, Morgan R. Stewart, Kailin Mooney, Mingchong Dai, Samuel Drennan, Samantha Holland, Arnaud Quentel, Sinan Sabuncu, Benjamin R. Kingston, Isabel J. Dengos, Karla Bonic, Florian Goncalves, Xin Yi, Michael I. Henderson, Srivathsan Ranganathan, Bruce P. Branchaud, Leslie L. Muldoon, Ramon F. Barajas Jr, Jared M. Fischer, Adem Yildirim   +19 more
wiley   +1 more source

Increasing the compression pressure in an engine by using a long intake pipe [PDF]

During some tests of a one-cylinder engine, using gas oil (diesel engine oil, specific gravity 0.86 at 60 F) with solid injection and compression ignition, it was found to be necessary to increase either the jacket water temperature or the compression ...
Gardiner, Arthur W, Mathews, Robertson
core   +1 more source