Evaluation of extraction methods

In this study, we evaluated and compared the effectiveness of four different protocols (D, MJ, MA, and S) for separating MPs from water of different types (brackish, marine, and river). Known combinations of MP particles (polyethylene (PE), polyethylene terephthalate (PET), polystyrene (PS) and polyvinyl chloride (PVC) with size ranging between 150 μm and 700 μm were spiked into water samples. Our results showed that the average recovery effectiveness of microplastics using four studied methods ranged from 53% to 86%.

10p dianmotminh02 03-05-2024 2 1   Download

The present study focuses on the preparation of silver/copper bimetallic hybrid nanoparticles by green method from precursor solutions of silver nitrate & copper nitrate and the locally available citrus fruit (lemon) peel extract which behaves as the stabilizing and reducing agent. Initially, the formation of hybrid nanoparticles was noticed in the reaction mixture by colour change.

7p dianmotminh02 03-05-2024 3 1   Download

Photocatalytic degradation proficiency was studied for bromothymol blue dye. Phytochemicals-coated Nickel Oxide nanoparticles demonstrated antibacterial properties against bacteria (gram negative strain of E. coli, Pseudomonas spp. and gram positive strain of Bacillus spp.) by showing highest zone of inhibition (19 mm, 22 mm, 15 mm).the antioxidant activity of the synthesized nanoparticles were also examined and the result show that the fabricated nanoparticles exhibited significant radical scavenging activity.

10p dianmotminh02 03-05-2024 5 2   Download

This study was conducted to determine the solvent and additives to obtain high bioactive compounds from Daklak Vietnam Robusta GCB to evaluate extraction methods, the properties (emulsion formation, particle, stability) and testing the antioxidant, antibiotic and cytotoxicity of the nanoemulsions of Robusta GCB extract.

7p viellison 28-03-2024 3 1   Download

Ebook "Evapotranspiration in the soil-plant-atmosphere system" is presenting and quantifying it as a catenary process, describing transport of water in the soil, including root extraction patterns and methods of its evaluation. Transport of water through the plant and from the canopy to the atmosphere is also described and quantified.

262p nhanphanguyet 28-01-2024 4 2   Download

This paper presents an approach to leverage this information during computing rotation by averaging of value of rotations extracted from both left and right sides. The proposed method is evaluated on the KITTI dataset to verify the performance of this algorithm.

13p viengels 25-08-2023 4 4   Download

The current study is to develop an easy and eco-friendly method for the synthesis of AgNPs using aqueous seed extract of E. robusta (Er-AgNPs) and evaluated the extract to know the effects of catalytic, antibacterial, antidiabetic, and antioxidant activities.

11p viberbers 09-08-2023 5 3   Download

In this paper, we propose an artificial neural network (ANN) based method to predict the energy use in campus buildings in short-term time series from one hour up to one week. The proposed method analyzes and extracts the features from the historical data of load and temperature to generate the prediction of future energy consumption in the building based on sparsified K-means. To evaluate the performance of the proposed approach, historical load data in hourly resolution collected from the campus buildings in Chonnam National University were used.

13p nhanchienthien 25-07-2023 8 4   Download

To evaluate the early result of EVAR in abdominal aorta aneurysm patients in Viet Duc university hospital from 01/01/2018 to 30/12/2021. Methods: Descriptive and retrospective study with convenience sampling. Data was extracted from patient records.

9p vihulk 27-07-2023 2 2   Download

Review the existing studies including an assessment tool/method to assess the quality of mHealth apps extract their criteria; and provide a classification of the collected criteria. Twenty-three papers were included in the review. Thirty-eight main classes of assessment criteria were identified. These were reorganized by expert panel into 7 main classes (Design, Information/Content, Usability, Functionality, Ethical Issues, Security and Privacy, and User-perceived value) with 37 sub-classes of criteria.

10p visteverogers 24-06-2023 6 2   Download

The aim of the research was the processing of the vibration signatures from healthy and damaged composite beams acquired with the help of a Scanning Laser Vibrometer (SLV) upon excitation and analysis of the mode shapes acquired for damage detection. The displacement mode shapes acquired were then converted into curvature mode shapes with the help of a Central Difference Approximation method (CDA).

146p runthenight07 01-03-2023 5 2   Download

The main purpose of the research "Rule extraction method for identifying solar PV generation" is to evaluate the applicability of rule extraction through interim summarisation to the problem of identifying electricity customers who have solar PV systems installed from their electricity consumption data.

112p runthenight04 02-02-2023 1 1   Download

This study screened phytochemicals to determine their total polyphenols content (TPC) by Folin-Ciocalteu reagents and to evaluate antioxidant activity using DPPH scavenging, ABTS cation decolorization, and reducing power assays of various extracts of Symplocos cochinchinensis leaves. A correlation between TPC and antioxidant activity was analysed by Pearson’s method.

6p vicedric 08-02-2023 4 1   Download

In this study, anticholinergic, antidiabetic, antioxidant and cytotoxic activities of Reseda lutea L. (R. lutea) were determined. Ethanol extracts of R. lutea (EERL) and water extract of R. lutea (WERL) were prepared for biochemical analysis. The antioxidant capacities of EERL and WERL were evaluated with 6 different methods. In addition, acetylcholinesterase (AChE), α-amylase and α-glycosidase enzyme inhibition by EERL were measured.

16p lyhuyenthu 31-01-2023 3 2   Download

Headspace in-tube extraction (HS-ITEX) and solid phase microextraction (HS-SPME) sampling, followed by gas chromatography-mass spectrometry (GC–MS), are widely used to analyze volatile compounds in various food matrices.

11p viginny 23-12-2022 13 3   Download

Food analysis is a tremendously broad field that is constantly evolving. New methods have emerged to increase productivity, such as modern miniaturized and robotic analytical techniques. In this paper, a microsolid-phase extraction system (μ-SPE) for clean-up was combined with a robotic autosampler to yield ready-to-analyze extracts.

11p viginny 23-12-2022 11 3   Download

Hydnophytum formicarum is a medicinal plant that has a variety of bioactive compounds and has been traditionally used for therapeutic purposes. Hydnophytum formicarum grows on the stems of large trees and in a symbiosis with a type of ants. This study investigates the effects of technological factors on the extraction process of Hydnophytum formicarum in n-hexan, ethyl acetate, and ethanol solvents by using the Soxhlet method.

6p vijaguar 16-11-2022 10 1   Download

The objective of the study "Total phenolic content and antioxidant activity of sesame cake aqueous extracts" was to investigate the efficiency of phenolic extraction and antioxidant activity from sesame cake using water extraction method and to evaluate the possibility of employing microwave irradiation to improve the extraction yield.

8p tieuvulinhhoa 22-09-2022 13 2   Download

This thesis reports research conducted to: Determine antioxidant capacity of dry and fresh calyxes of Hibiscus sabdariffa; Validate the HPLC method for analysis of the key antioxidant phytochemicals of Hibiscus sabdariffa; Quantify the amounts of key antioxidants in the extracts of Hibiscus sabdariffa calyxes.

130p runordie3 06-07-2022 6 2   Download

This paper suggests a new solution to conceal text messages in media by hybridizing a meta-heuristic algorithm of the Gravity search algorithm (GSA) and transposition method. Several stages are implemented, namely the concealment stage, extract stage, and evaluation metrics, whereas cover text and message text are split into blocks, and each block contains one letter, relying on the fitness value of related notes both of secret information and cover message.

9p linyanjun_2408 21-04-2022 15 3   Download