Results 71 to 80 of about 269,073 (304)

Dual‐Functional Polyphosphoesters for Gene Delivery: Synergistic Effects of Guanidinium and Hydrophobic Side Chains in Degradable Polymers

Advanced Healthcare Materials, EarlyView.
This study presents guanidinium‐ and indole‐functionalized polyphosphoesters as degradable, non‐viral gene delivery vectors. Through precise tuning of charge density and hydrophobicity, these polymers form stable polyplexes with low toxicity. Remarkably, minor structural changes yield up to 200‐fold differences in transfection efficiency, highlighting ...
Markus Kötzsche, Andreas Dzierza, Jan Egger, Timo Rheinberger, Christin Weilandt, Frederik R. Wurm, Ivo Nischang, Dagmar Fischer, Kalina Peneva   +8 more
wiley   +1 more source

Impact of fuel composition on the recirculation zone structure and its role in lean premixed flame anchoring [PDF]

, 2014
We investigate the dependence of the recirculation zone (RZ) size and structure on the fuel composition using high-speed particle image velocimetry (PIV) and chemiluminescence measurements for C[subscript 3]H[subscript 8]/H[subscript 2]/air lean premixed
Ghoniem, Ahmed F., Hong, Seung hyuck, Shanbhogue, Santosh   +2 more
core   +1 more source

Purpose‐Adaptable Reinforced 3D Hyaluronic‐Acid Based Platform to Study Pathomechanisms of the Central Nervous System

Advanced Healthcare Materials, EarlyView.
Platform system to create biofabricated 3D spinal cord tissue models: Combining high resolution PCL fiber placement, a customized, hyaluronic acid‐based hydrogel, two cell types (spinal cord neurons and astrocytes) together with three distinct laminin isoforms allow the formation of functional cell–cell network interactions.
Nicoletta Murenu, Esra Tuerker, Anna‐Lena Wiessler, Jessica Faber, Ievgenii Liashenko, Jeanette Weigelt, Jörg Tessmar, Paul D. Dalton, Sibylle Jablonka, Mateo S. Andrade Mier, Carmen Villmann, Silvia Budday, Natascha Schaefer   +12 more
wiley   +1 more source

Effect of Nozzle Height on the Combustion Dynamics of Jet Fires in Rotating Flow Fields

Fire
In this paper, the effect of nozzle height on the combustion dynamics of jet fires in rotating flow fields (JFRFFs) is systematically investigated through experimental and numerical simulations.
Qiang Zhang, Jinjiang Wang, Laibin Zhang, Pengchao Chen, Xiaole Qin, Kuibin Zhou, Yufeng Yang, Jiancheng Shi   +7 more
doaj   +1 more source

Study on the influence of enclosed vertical channels on downward flame spread over XPS thermal insulation materials

Case Studies in Thermal Engineering, 2019
In this paper, the small-scale combustion experiments are carried out in combination with theoretical analysis to study the influence of length-width ratio (α) of enclosed vertical channel on the downward flame spread of XPS insulation material attaching
Minglun Cai, Song Chen, Yanhua Tang, Qing Li, Weiguang An   +4 more
doaj   +1 more source

Flame length measurements of the turbulent plume [PDF]

Physics of Fluids A: Fluid Dynamics, 1990
The minimum molecular scale mixing rate of the turbulent plume was found by measurements of the plume ‘‘flame length’’ under various initial conditions. A simple derivation based on the self-similar properties of plumes provides power law relations for the mixing rate, which agree well with the experiments.
openaire   +1 more source

The Influence of Tailpipe Length on Flame Stability [PDF]

ASME 1967 Gas Turbine Conference and Products Show, 1967
The influence of tailpipe length on the stability of a flame anchored in a high-velocity propane-air stream contained in a 2-in. pipe test section has been experimentally examined. Two flameholders were studied; a bluff body and a reverse-jet. A satisfactory correlation of the bluff-body data was obtained by plotting (blowoff velocity) (tailpipe length)
Louis G. Palermo, John R. O’Loughlin
openaire   +1 more source

Unveiling the Role of Curvature in Carbon for Improved Energy Release of Ammonium Perchlorate

Advanced Materials, EarlyView.
High‐curvature carbon materials identified via machine learning and simulation can enhance the heat release and combustion performance of ammonium perchlorate. ABSTRACT The catalytic role of carbon curvature in the thermal decomposition of ammonium perchlorate (AP) remains largely unexplored. To address this gap, this study employs machine learning and
Dan Liu, Keliang Song, Haorui Zhang, Zhipeng Liu, Guansong He, Junru Wang, Wenming Yang, Xu Zhao, Zhijian Yang   +8 more
wiley   +1 more source

Preparation and characterization of bis-[1,3,5]triazinyl diazenes and their utilization as flame retardants in polypropylene films [PDF]

, 2014
A series of bis-[1,3,5]triazinyl diazenes and two metal complexes thereof were synthesized and tested as new flame retardants in polypropylene films. It was observed that electron withdrawing triazinyl ring substituents (i.e.
Aelmans, Aubert, Aubert, Aubert, Chantarasiri, Chen, Chigrinov, Chudgar, Dugave, Duliban, Huang, Huynh, Inoue, Inoue, Kandil, Koopman, Laoutid, Larkin, Li, Lin, Loew, Mikhailov, Milman, Morgan, Morgan, Nicolas, Oxley, Pawelec, Petredis, Ribeiro da Silva, Schartel, Singh, Skinner, Starnes, Tirri, Veen, Wilen, Yamanaka, Zhao, Zhong, Zilker   +40 more
core   +1 more source

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

Advanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje, Wilson Henao, Tania Rodenas, Patricia Concepción, Virginia Pérez Dieste, Alexander Missyul, Giovanni Agostini, Gonzalo Prieto   +7 more
wiley   +1 more source