Results 21 to 30 of about 1,570,001 (303)

Optimization of the Laminate Structure of a Composite Cylinder Based on the Combination of Response Surface Methodology (RSM) and Finite Element Analysis (FEA)

open access: yesMolecules, 2022
This study optimized the laminate structure of a composite cylinder under the constraint of minimum layup thickness. Based on the progressive damage theory, a finite element model of the cylinder was established, and the NOL ring tensile test was used to
Zhiqi Li   +7 more
doaj   +1 more source

Construction of Ultrathin Layered MXene-TiN Heterostructure Enabling Favorable Catalytic Ability for High-Areal-Capacity Lithium–Sulfur Batteries

open access: yesNano-Micro Letters, 2022
Catalysis has been regarded as an effective strategy to mitigate sluggish reaction kinetics and serious shuttle effect of Li–S batteries. Herein, a spherical structure consists of ultrathin layered Ti3C2T x -TiN heterostructures (MX-TiN) through in-situ ...
Hao Wang   +6 more
doaj   +1 more source

On-demand assembly of polymeric nanoparticles for longer-blood-circulation and disassembly in tumor for boosting sonodynamic therapy

open access: yesBioactive Materials, 2022
Sonodynamic therapy (SDT) is one of the promising strategies for tumor therapy, but its application is usually hindered by fast clearance in blood-circulation, abnormal tumor microenvironment, and inefficient generation of reactive oxygen species.
Mei Wen   +7 more
doaj   +1 more source

Direct tunneling through high-$\kappa$ amorphous HfO$_2$: effects of chemical modification [PDF]

open access: yes, 2014
We report first principles modeling of quantum tunneling through amorphous HfO$_2$ dielectric layer of metal-oxide-semiconductor (MOS) nanostructures in the form of n-Si/HfO$_2$/Al. In particular we predict that chemically modifying the amorphous HfO$_2$
Ferdows Zahid   +9 more
core   +2 more sources

Chemical Modification of Tylosin.

open access: yesThe Journal of Antibiotics, 1995
20-Homo tylosin, 20-nor tylosin, 20-deoxy-19,20-didehydro tylosin (6-vinyl tylosin) and 2",3"-didehydro-3"-deoxy tylosin were prepared by multi-step procedures. 20-Homo tylosin was about twice less active than tylosin while the other compounds exhibited very weak antibacterial activity.
S, Bobillot   +6 more
openaire   +3 more sources

Chemical Modification of Polysaccharides [PDF]

open access: yesISRN Organic Chemistry, 2013
This review covers methods for modifying the structures of polysaccharides. The introduction of hydrophobic, acidic, basic, or other functionality into polysaccharide structures can alter the properties of materials based on these substances. The development of chemical methods to achieve this aim is an ongoing area of research that is expected to ...
openaire   +2 more sources

Stretchable fabric generates electric power from woven thermoelectric fibers

open access: yesNature Communications, 2020
Despite recent advances in flexible thermoelectric generators for wearable devices, current designs are unable to efficiently harvest heat flowing from human body. Here, the authors report high thermoelectric performance and stretchability in interlocked
Tingting Sun   +5 more
doaj   +1 more source

The Effect of Cooling Rates on Thermal, Crystallization, Mechanical and Barrier Properties of Rotational Molding Polyamide 11 as the Liner Material for High-Capacity High-Pressure Vessels

open access: yesMolecules, 2023
The rapid development of hydrogen fuel cells has been paralleled by increased demand for lightweight type IV hydrogen storage vessels with high hydrogen storage density, which raises the performance requirements of internal plastic liners. An appropriate
Muhuo Yu   +6 more
doaj   +1 more source

Microstructural analysis and magnetic characterization of native and magnetically modified montmorillonite and vermiculite [PDF]

open access: yes, 2018
Two clay minerals of the similar 2 : 1 layer structure and chemical composition, vermiculite and montmorillonite, were studied using a wide spectrum of experimental methods in their original states and the magnetically modified states after mixing with ...
Bursík, Jiří   +7 more
core   +2 more sources

Giant magnetoimpedance: new electrochemical option to monitor surface effects?

open access: yes, 2006
Magnetoimpedance, MI, change due to surface modification of the sensitive element caused by biofluids was studied with the aim of creating a robust sensor capable of separating the chemical surface modification from the sensing process.
Baselt   +11 more
core   +1 more source

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