A systematic approach was developed to understand, in-depth, the mechanisms involved during inactivation of bacterial cells using photoelectrocatalytic (PEC) processes with Escherichia coli K-12 as model microorganism. The were found be inactivated and decomposed primarily due attack from photogenerated H2O2. Extracellular reactive oxygen species (ROSs), such H2O2, may penetrate into cell cause dramatically elevated intracellular ROSs levels, which would overwhelm antioxidative capacity...

A series of novel well-defined Ag/AgX (X = Cl, Br, I) loaded carbon nanotubes (CNTs) composite photocatalysts (Ag/AgX-CNTs) were fabricated for the first time via a facile ultrasonic assistant deposition-precipitation method at room temperature (25 ± 1 °C). X-ray diffraction, photoelectron spectroscopy, nitrogen adsorption-desorption analysis, scanning electron microscopy, and ultraviolet-visible light absorption spectra analysis used to characterize structure, morphology, optical properties...

The carbon nanotube (CNT)-sub-micrometer-sized anatase TiO₂ sphere composite photocatalysts were synthesized by a facile one-step hydrothermal method using titanium tetrafluoride as source and CNTs structure regulator. Various technologies including X-ray diffraction, UV-visible absorption spectra, N₂ adsorption-desorption, scanning electron microscopy, transmission microscopy employed to characterize the properties of prepared photocatalysts. results indicated that consisted wrapping around...

Accurate pore structure characterization, as a basic tool for efficient exploration and development in reservoirs digital rock, has become increasingly popular nowadays. However, using single-scale core data, it is difficult to evaluate the multi-scale structures shales. This study proposes an integrated workflow identifying extracting parameters from three-dimensional two-dimensional rock images, which includes full-diameter computed tomography (CT), micro-CT, focused ion beam-scanning...

Abstract The use of biodegradable polymeric nanoparticles (NPs) for controlled drug delivery has shown significant therapeutic potential. Polyaspartic acid and polylactic are the most intensively studied polymers. In present study, novel amphiphilic co‐polymer NPs, poly( L ‐aspartic acid‐ co ‐lactic acid) with 1,2‐dipalmitoyl‐ sn ‐glycero‐3‐phosphoethanolamine (DPPE) (poly(AA‐co‐LA)/DPPE) is synthesized subsequently used to encapsulate an antitumor doxorubicin (DOX). formulation parameters...

Abstract Triple negative breast cancer (TNBC) has the characteristics of low immune cell infiltration, high expression tumor programmed death ligand 1 (PD-L1), and abundant stem cells. Systemic toxicity traditional chemotherapy drugs due to poor drug selectivity, failure resistance other problems, so it is particularly important find new treatment strategies for TNBC with limited options. Both anti-tumor natural curcumin ginsenoside Rg3 can exert effects by inducing immunogenic (ICD) cells,...

The characterization of carbonate microstructure is great significance for the evaluation oil and gas resources. However, due to complexity heterogeneity pore structure tight rocks, high-pressure mercury intrusion, nuclear magnetic resonance (NMR) other methods have different limitations in characterization. This study takes core samples fourth member Ordovician Majiagou Formation Ordos Basin as research object, rock physics experiments, computed tomography (CT), high resolution large-scale...

Gold nanostructures with promising applications in biomedical field have attracted great attention. However, some fundamental questions other than the development of novel should be elucidated before they can actually serve as biomedicines clinic. Bio-safety is one most important issues. Since numerous modifications (e.g., surface coating and composites) been designed on gold nanoparticles (GNPs) to extend their application, there would hundreds GNPs synthesized lab although prototypes...

In this paper, we report a novel targeting drug delivery system, obtained using an amphiphilic chitosan-co-(D,L-lactide)/1,2-dipalmitoyl-sn-glycero-3-phosphoethanolamine copolymer (CS-co-PLA/DPPE) with the modification of iRGD (CRGDKGPDC) peptide as module. Hydrophilic doxorubicin (DOX) was encapsulated and cell experiments were carried out to evaluate anti-tumor efficacy DOX-loaded nanoparticles (NPs) in vitro. Characterization data showed favorable size distribution, high encapsulation...

Abstract Background Biological composite scaffolds are increasingly being used in abdominal wall reconstruction but still have certain shortcomings. The present study describes here a novel three-dimensional (3D) scaffold fabricated by combining 3D printing (3DP) and electrospinning (ESP). Methods composed of integrated 3DP interconnected macrofiber random ESP microfiber networks. retains intact architecture mechanical properties, while the network serves as cell entrapment system at...

Abstract In this paper, the influence of phase evolution on polarization change and electrocaloric response in lead‐free (Ba 0.9 Ca 0.1 )(Ti 1− x Z r )O 3 ceramics ( BCTZ ) was systematically investigated. With increasing Zr/Ti ratio, structure transition behavior were greatly changed, resulting various temperature electric field dependence responses. For =0.05, a peak 1.64 K (at 130°C) corresponding entropy 1.78 J·kg −1 ·K obtained for 0‐7 kV·mm field. Negative −0.1 below Curie T c ), which...

An in situ observation of the precipitation γ-Mg17Al12 phase a die-cast Mg–Al–Zn–Sn alloy was performed using transmission electron microscope equipped with heating stage maintained at 403 K for 100 min. The addition small amount Sn to AZ91 system accelerates development formed during continuous precipitation. A new orientation relationship between precipitate and α-Mg matrix identified as .

The crystallographic orientation relationships (ORs) of precipitated β-Mg 2 Sn particles in Mg–9.76 wt% alloy aged at 573 K for 5 h, corresponding to its peak hardness, were investigated by advanced transmission electron microscopy (TEM). OR-3 (110) β //(0001) α and [\overline 111] //[1\overline 210] OR-4 [001] //[2\overline 1\overline 10] are the key ORs alloy. proportions exhibiting determined as 75.1 24.3%, respectively. Crystallographic factors predominance particles. This mechanism was...