Browse Our Latest Applied Sciences Journals

In applied sciences, researchers use particular scientific methods to achieve practical goals. You can think of applied sciences as a broad, integrated area of various scientific fields that involve agronomy, agriculture, food science, medicine, engineering, computer science, and many other natural and social science disciplines. The main goal of applied science is to provide more knowledge and practical applications

Materials and Applied Sciences

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Abstract

Thermomechanical treatments and variations in chemical composition during the production of these alloys allow their properties to be adjusted as necessary. In the present research, the influence of chemical modification was analyzed by adding a combination of two rare earth elements (lanthanum and cerium) and performing a pretreatment before natural and artificial aging. With this, it was observed that said chemical modification led to an increase in hardness after artificial aging and specific suppression of the hardening speed at room temperature, combined with a pretreatment process to improve the density of the nucleation site and take advantage of the possible vacancy capture effect. Furthermore, microstructural changes were observed in the study alloys by scanning electron microscopy. The above allows the design of alloy production processes according to the requirements of each application.

Open access

Abstract

Elderberry pomace, a by-product generated by elderberry processing industries, may be a favourable resource for further utilisation due to its components of high nutritional quality. In our research, elderberry pomace extract (EP) was added to apple juice as natural food additive for controlling microbial spoilage and enriching antioxidant components.

During the 8-week storage period of enriched apple juice (EPA) and control apple juice samples antioxidant properties were evaluated using the FRAP assay, Folin–Ciocalteu method, and pH differentiation method. The amount of polyphenols components was quantified using an RP-HPLC method. The microbiological status of samples was studied by determining the total viable and yeast/mould counts. The EPA is an important source of polyphenol components and other bioactive compounds, and the results suggest that extract of elderberry pomace could be a promising natural preservative to improve microbiological stability during refrigerated storage and increase the quality of apple juice.

Open access
Acta Alimentaria
Authors:
Z.Z. Yang
,
J.Q. Zhang
,
B.B. Shi
,
J.Q. Qian
, and
H. Guo

Abstract

Myricetin has been reported to have a wide variety of beneficial physiological functions. The present study investigated the antihyperlipidaemic activity of myricetin against hyperlipidaemia of high-fat diet-fed obese rats. The four-week antihyperlipidaemic activity was assayed by giving different doses of myricetin to hyperlipidaemic rats. Results showed that myricetin could reduce the harm caused by oxidative stress, decrease thiobarbituric acid reactive substances value, and decrease total cholesterol and triacylglycerol levels of hyperlipidaemic rats. Quantitative analysis of gene expression showed that myricetin's lipid-lowering activity can be activated by downregulating gene expression of fatty acid synthase (FAS) and peroxisome proliferator-activated receptor-γ (PPARγ) with upregulation of hormone-sensitive lipase (HSL) mRNA level. Thus, myricetin had significant health benefits and could be explored as a potentially promising dietary supplement for treating hyperlipidaemia.

Open access

Abstract

Conversion of economic microcrystalline cellulose (MCC) into high value-added prebiotic glucans, is not only stimulates utilisation of renewable lignocellulosic biomass, but also provides cheap prebiotics to reduce high incidence of obesity and metabolic syndrome. Herein, glucans (C0.25–C0.50–C1.00) from MCC were prepared by pre-impregnation with dilute sulphuric acid (0.25–0.50–1.00%) and ball-milling treatment for 1 h. NMR spectroscopy and gel-permeation chromatography of the glucan products showed a significant reduction in the degree of polymerisation (DP) and molecular weights (Mw). All prepared glucans improved gut stress evaluated by in vitro digestion and fermentation (young and aging mouse faecal inocula). C1.00 with lower DP and Mw showed better water solubility, earlier peak, and exhibited increased 1-diphenyl-2-picrylhydrazyl activity, higher ratios of Lactobacillus to Escherichia coli, and a higher level of short chain fatty acids better than C0.25 and C0.50 treatment (P < 0.05). Better prebiotic effects were observed in aging mice than in young mice. The highest ratio of Lactobacillus to E. coli was a 2.13-fold increase for aging mice compared to a 1.79-fold increase for young mice, relative to the initial value after C1.00 treatment. The study provides a novel pathway and a new resource for producing glucan.

Restricted access

NMR characterization of the permeability and structure of Boda Claystone Formation (BCF)

BCF - reservoir rock by NMR

A Bodai Aleurolit Formáció (BAF) permeabilitásának és szerkezetének NMR jellemzése

Scientia et Securitas
Authors:
Vanda Papp
,
Róbert Janovics
, and
Mónika Kéri

Summary

High-level radioactive waste can be safely disposed of in deep geological repositories, for which a possible geological environment in Hungary is the Boda Claystone Formation. In the repository site selection, the geochemical investigation of the host rock is necessary including the structural characterization. In this study, the porosity (p%~1.5% and 5.84%) and the T2cutoff value (0.12 ms and 0.10 ms) of two siliciclastic rock was determined by desktop low-field NMR, the value of which differed from the 3 ms accepted for clay-bound water and the 33 ms for movable water in clastic reservoirs. Based on the T2cutoff, the producible porosity was found to be high, however, based on the T2 distributions, the bound-water types dominate the composition of the water phase of the rock.

Open access