Results 221 to 230 of about 4,010 (268)

Enhanced Biocatalysis in Nanofluidic Membrane Reactors With Goldilocks Nanopores for Enzymes

Small, EarlyView.
We show that enzyme confinement within the three‐dimensionally interconnected nanochannels of a polyurea molecular network membrane, featuring pore‐size tunability to match the enzyme size, enables a highly active nanofluidic reactor platform. Stable continuous‐flow operation for >200 h and a 30 000‐fold increase in specific space‐time yield over ...
Wangsuk Oh, Ji‐Woong Park
wiley   +1 more source

Visualizing Metal Nanoparticle Electrochemical Dissolution Atom by Atom

Small, EarlyView.
The early stages of the electrochemical dissolution of gold nanoparticles (NPs) on electron beam transparent carbon‐based supports are investigated using identical location scanning transmission electron microscopy at atom resolution. Numbers of atoms lost (and gained), along with morphology changes are tracked for the same NP within an ensemble, over ...
Pei Zhao, Daniel Houghton, Richard Beanland, Julie V. Macpherson   +3 more
wiley   +1 more source

Effects of different lengths and doses of raw and treated sisal fibers in the cement composite material. [PDF]

Sci Rep
Fode TA, Jande YAC, Kim YD, Ham MG, Lee J, Kivevele T, Rahbar N.   +6 more
europepmc   +1 more source

Ultrahigh Stiffness and Energy Absorption Properties of Isotropic Metallic Closed Cell Microlattices

Small, EarlyView.
True closed cell microlattices without holes are fabricated for the first time using a novel Laser Sheet Fusion additive manufacturing technique. These microlattices exhibited isotropy in stiffness and surprisingly, strength and plasticity as well, despite orientation‐dependent failure mechanisms. Furthermore, material work hardening is shown to be key
Dominic Kang Jueh Lim, Chang Quan Lai
wiley   +1 more source

A novel pythonic paradigm for image encryption using axis-aligned bounding boxes. [PDF]

Sci Rep
Banga A, Abbas A, Ali D, Innab N, Alluhaidan AS, Iqbal N, Diab H.   +6 more
europepmc   +1 more source

Rounded Monodisperse Fluorescent Nanodiamonds

Small, EarlyView.
Nanodiamond (ND) shape control using rapid molten‐nitrate etching is studied as a scale‐up method for monodispersed rounded particles. Optimal etching condition (567°C for 6 min) yields NDs with atomically stepped surfaces and reduced sp2 content. Compared to angular control, rounded NDs exhibit an increased proportion of luminescent particles (66% vs.
Helena Raabova, Ivan Rehor, Jan Havlik, Stuart Turner, Jan Stursa, Vladimira Petrakova, Michal Gulka, Petr Cigler   +7 more
wiley   +1 more source

Quantitative Analysis of Background Intraocular Pressure Volatility and Retinal Nerve Fiber Layer Loss in Cytomegalovirus Anterior Uveitis. [PDF]

Transl Vis Sci Technol
Hsu YR, Cheng MS, Su CC, Sun WH, Wang JK.   +4 more
europepmc   +1 more source

Monitoring of historical structural materials with computed tomography

Structural Concrete, EarlyView.
Abstract Computed tomography (CT) is an excellent tool to solve certain engineering problems connected to material science (such as sulfate swelling, internal degradation due to freezing, and alkali silicate swelling) and to understand specific processes (frost peeling, acid action).
Kristóf Csorba, Kristóf Kapitány, Zsolt Cimer, Viktor Hlavička, András Biró, Éva Lublóy   +5 more
wiley   +1 more source

Multiple image encryption algorithm using channel randomization and multiple chaotic maps. [PDF]

Sci Rep
Hosny KM, Elnabawy YM, Salama RA, Elshewey AM.   +3 more
europepmc   +1 more source