Edge Chipping Resistance and Flexural Strength of CAD-CAM Ceramics Before and After Thermomechanical Aging.

Objectives: To evaluate the complementary mechanical properties of dental ceramics using edge chipping resistance (Rea) and flexural strength before and after thermomechanical aging.

Material And Methods: Computer-aided design and computer-aided manufacturing of ceramic materials, including zirconia (ZR), lithium disilicate (LS2), and resin nanoceramics (RNC), were evaluated. Specimens for flexural strength testing were fabricated with dimensions of 3 × 4 × 25 mm, with 30 specimens per group.

Probing the Distribution and Mobility of Aminopolymers after Multiple Sorption-Regeneration Cycles: Neutron Scattering Studies.

Solid-supported amines are effective CO adsorbents capable of capturing CO from flue gas streams (10-15 vol % CO) and from ultradilute streams, such as ambient air (∼400 ppm CO). Amine sorbents have demonstrated promising performance (e.g.

Underlying Roles of Polyol Additives in Promoting CO Capture in PEI/Silica Adsorbents.

Solid-supported amines having low molecular weight branched poly(ethylenimine) (PEI) physically impregnated into porous solid supports are promising adsorbents for CO capture. Co-impregnating short-chain poly(ethylene glycol) (PEG) together with PEI alters the performance of the adsorbent, delivering improved amine efficiency (AE, mol CO sorbed/mol N) and faster CO uptake rates. To uncover the physical basis for this improved gas capture performance, we probe the distribution and mobility of the polymers in the pores via small angle neutron scattering (SANS), solid-state NMR, and molecular dynamic (MD) simulation studies.

Cold Temperature Direct Air CO Capture with Amine-Loaded Metal-Organic Framework Monoliths.

Zeolites, silica-supported amines, and metal-organic frameworks (MOFs) have been demonstrated as promising adsorbents for direct air CO capture (DAC), but the shaping and structuring of these materials into sorbent modules for practical processes have been inadequately investigated compared to the extensive research on powder materials. Furthermore, there have been relatively few studies reporting the DAC performance of sorbent contactors under cold, subambient conditions (temperatures below 20 °C). In this work, we demonstrate the successful fabrication of adsorbent monoliths composed of cellulose acetate (CA) and adsorbent particles such as zeolite 13X and MOF MIL-101(Cr) by a 3D printing technique: solution-based additive manufacturing (SBAM).

Direct Air Capture of CO Using Amine/Alumina Sorbents at Cold Temperature.

Rising CO emissions are responsible for increasing global temperatures causing climate change. Significant efforts are underway to develop amine-based sorbents to directly capture CO from air (called direct air capture (DAC)) to combat the effects of climate change. However, the sorbents' performances have usually been evaluated at ambient temperatures (25 °C) or higher, most often under dry conditions.

Effect of Dielectric Barrier Discharge Plasma against Mixed-Culture Biofilms on Food-Contact Surfaces.

is a major foodborne pathogen. Various methods can be used to control biofilms formed by foodborne pathogens. Recently, the food industry has become interested in plasma, which can be used as a non-thermal technology with minimum changes to product quality.

Support Pore Structure and Composition Strongly Influence the Direct Air Capture of CO on Supported Amines.

A variety of amine-impregnated porous solid sorbents for direct air capture (DAC) of CO have been developed, yet the effect of amine-solid support interactions on the CO adsorption behavior is still poorly understood. When tetraethylenepentamine (TEPA) is impregnated on two different supports, commercial γ-AlO and MIL-101(Cr), they show different trends in CO sorption when the temperature (-20 to 25 °C) and humidity (0-70% RH) of the simulated air stream are varied. IR spectroscopy is used to probe the mechanism of CO sorption on the two supported amine materials, with weak chemisorption (formation of carbamic acid) being the dominant pathway over MIL-101(Cr)-supported TEPA and strong chemisorption (formation of carbamate) occurring over γ-AlO-supported TEPA.

Inactivation of Human Norovirus GII.4 and in the Sea Squirt () by Floating Electrode-Dielectric Barrier Discharge Plasma.

Human norovirus (HNoV) GII.4 and may be found in sea squirts. Antimicrobial effects of floating electrode-dielectric barrier discharge (FE-DBD) plasma (5-75 min, N 1.

Antibiofilm Efficacy of Quercetin against Biofilm on Food-Contact Surfaces in the Food Industry.

Vibrio parahaemolyticus, one of the most common foodborne pathogenic bacteria that forms biofilms, is a persistent source of concern for the food industry. The food production chain employs a variety of methods to control biofilms, although none are completely successful. This study aims to evaluate the effectiveness of quercetin as a food additive in reducing V.

Antimicrobial Efficacy of Quercetin against Biofilm on Food Surfaces and Downregulation of Virulence Genes.

For the seafood industry, Vibrio parahaemolyticus, one of the most prevalent food-borne pathogenic bacteria that forms biofilms, is a constant cause of concern. There are numerous techniques used throughout the food supply chain to manage biofilms, but none are entirely effective. Through assessing its antioxidant and antibacterial properties, quercetin will be evaluated for its ability to prevent the growth of V.

The Inhibitory Effect of Quercetin on Biofilm Formation of Mixed Culture and Repression of Virulence.

Listeria monocytogenes is the species of foodborne pathogenic bacteria that causes the infection listeriosis. The food production chain employs various methods to control biofilms, although none are completely successful. This study evaluates the effectiveness of quercetin as a food additive in reducing L.

Impact of Quercetin against Typhimurium Biofilm Formation on Food-Contact Surfaces and Molecular Mechanism Pattern.

Quercetin is an active nutraceutical element that is found in a variety of foods, vegetables, fruits, and other products. Due to its antioxidant properties, quercetin is a flexible functional food that has broad protective effects against a wide range of infectious and degenerative disorders. As a result, research is required on food-contact surfaces (rubber (R) and hand gloves (HG)) that can lead to cross-contamination.

Inhibitory effects of atmospheric dielectric barrier discharge plasma against Bacillus cereus and Staphylococcus aureus on Gwamegi (semi-dried Cololabis saira).

Aims: The current study was conducted to investigate the effects of atmospheric dielectric barrier discharge (DBD) plasma on the reduction of B. cereus and S. aureus, both potential hazardous bacteria on Gwamegi.

Dual-neodymium magnet-based microfluidic separation device.

Microfluidic-based separation methods have been highlighted for a number of biological applications, such as single cell analysis, disease diagnostics, and therapeutics. Although a number of previous studies have been carried out to minimize the physical damage and chemical deformations of the sample during the separation process, it still remains a challenge. In this paper, we developed a microfluidic device with dual-neodymium magnet-based negative magnetophoresis for the separation of the microparticles and cells.

Effect of Enhancers on and Skin Permeation and Deposition of S-Methyl--Methionine.

S-methyl--methionine (SMM), also known as vitamin U, is commercially available as skin care cosmetic products for its wound healing and photoprotective effects. However, the low skin permeation expected of SMM due to its hydrophilic nature with a log P value of -3.3, has not been thoroughly addressed.

Role of aquaporin 3 in development, subtypes and activation of dendritic cells.

Dendritic cells (DCs) uptake soluble antigens and large volumes of fluid through macropinocytosis and migrate for antigen presentation. Aquaporin 3 (AQP3), a water and glycerol transporting protein, is highly expressed in immature DCs. To elucidate the role of AQP3 in DC function, we investigated subtype and activation of DCs in AQP3 knock-out (AQP3(-/-)) mice.

The mechanism of fucoidan-induced apoptosis in leukemic cells: involvement of ERK1/2, JNK, glutathione, and nitric oxide.

Fucoidan, a sulfated polysaccharide in brown seaweed, has various biological activities including anti-tumor activity. We investigated the effects of fucoidan on the apoptosis of human promyeloid leukemic cells and fucoidan-mediated signaling pathways. Fucoidan induced apoptosis of HL-60, NB4, and THP-1 cells, but not K562 cells.

Accelerated wound healing by S-methylmethionine sulfonium: evidence of dermal fibroblast activation via the ERK1/2 pathway.

S-Methylmethionine sulfonium (SMMS) is a derivative of the amino acid methionine, and is synthesized in a variety of plants. SMMS is widely referred to as vitamin U because of its potent therapeutic effect on gastrointestinal ulceration. Skin wounds are accompanied by mucosal erosion and share similar histopathological aspects with gastric ulcers, so it is plausible that SMMS may promote skin wound healing.

Expression of dendritic cell markers on cultured neutrophils and its modulation by anti-apoptotic and pro-apoptotic compounds.

Neutrophils are also known to acquire the characteristics of dendritic cells (DCs) under the appropriate conditions. In this study, neutrophils were cultivated in vitro in the presence or absence of compounds modulating their survival in an attempt to characterize the expression profile of the DC markers. Higher MHC-II, CD80, CD86, CD83, and CD40 expression levels were detected on the surface of the cultured neutrophils for 24 h than on the freshly isolated cells.

Peritoneal fluid from endometriosis patients switches differentiation of monocytes from dendritic cells to macrophages.

Immunological abnormalities of cell-mediated and humoral immunity might be associated with the pathogenesis of endometriosis. This study has examined the effects of peritoneal fluid obtained from patients with endometriosis (ePF) on the phenotypic characteristics of macrophages and dendritic cells (DCs) derived from monocytes. Monocytes were obtained from healthy young volunteers and cultured with ePF (n=12) or a control PF (cPF) (n=5) in the presence or absence of macrophage-colony stimulating factor (M-CSF) or IL-4 plus granulocyte macrophage-colony stimulating factor (GM-CSF).

Apoptosis of human neutrophils induced by protein phosphatase 1/2A inhibition is caspase-independent and serine protease-dependent.

Protein phosphatase (PP) activity is associated with the regulation of apoptosis in neutrophils. However, the underlying regulatory mechanism(s) in apoptosis remain unclear. The type of cell death induced by okadaic acid (OA), the inhibitor of PP1 and PP2A, is characterized by apoptotic morphological changes of the cells and annexin V-positive staining without DNA fragmentation.

Delayed apoptosis and modulation of phospholipase D activity by plasmid containing mammalian cDNA in human neutrophils.

Phospholipase D (PLD) has been reported to have an anti-apoptotic role in neutrophils. This study examined the effects of plasmids containing the cDNA of PLD on the apoptosis of neutrophils. The apoptotic rate of neutrophils treated with the pCDNA3.

Comparison of transepidermal water loss, capacitance and pH values in the skin between intrinsic and extrinsic atopic dermatitis patients.

Atopic dermatitis (AD), with the prevalence rate of around 10 to 15%, is characterized by an intensely pruritic skin lesions with typical distribution and morphology. Recently, AD is divided into extrinsic type (ADe) and intrinsic type (ADi) according to the laboratory findings and associated diseases. ADe is well-known for high IgE level, positive response to food- or aero-allergens, whereas ADi has clinically similar skin lesions and distribution patterns of AD with normal serum IgE levels, negative in vitro test for environmental or food allergens and without associated atopic diseases.