Highly efficient method

Uniform and magnetic recyclable hollowsphere Zn doped Fe3O4 were successfully synthesized via simple one-pot solvothermal route. Morphology and structure of as-obtained products was characterized by XRD, SEM, HRTEM methods. The Zn-doped Fe3O4 hollowsphere exhibited high photocatalytic activity for degradation of hexavalent chromium under visible light irradiation.

5p vikwong 29-09-2024 2 1   Download

The novel composite nanomaterials were synthesized via a simple method from two natural clay mineral sources, graphite and halloysite. The materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FTIR), Brunauer-Emmet-Teller (BET) methods.

10p vikwong 29-09-2024 1 1   Download

The synthesis and Rhodamine B removal efficiency of monazite monoclinic BiPO4 by hydrothermal route using Bi(NO3)3·5H2O, K2HPO4·3H2Oand HNO3 as staring materials were presented in this work. The obtained samples were characterized by X-ray powder diffraction, high-resolution transmission fieldemission scanning electron microscopy and diffuse reflectance UV-Vis spectrometry.

4p vikwong 29-09-2024 1 1   Download

The scaled boundary finite element method (SBFEM) is a semi-analytical method, whose versatility, accuracy, and efficiency are not only equal to, but potentially better than the finite element method and the boundary element method for certain problems. This paper investigates the possibility of using an efficient high-order polynomial element in the SBFEM to form the approximation in the circumferential direction.

14p vifilm 24-09-2024 3 1   Download

The hydraulic rock splitter with a wedge-type splitting head has various advantages, such as simple operation, high work efficiency, safety, shortened work time, and minimal environmental impact. This paper introduces the general structure of the rock splitter machine and the hydraulic cylinder-driven splitting head, along with the method for selecting suitable parameters.

13p vifaye 20-09-2024 2 1   Download

The specific research objectives of this study are: 1. The development of a high throughput method for evaluation of alloys (5xxx Al as model materials in this work) subject to pitting; 2. Understanding the roles of variation in functional groups' in determining the inhibition efficiency; 3. Elucidating the inhibition mechanisms; and 4. Unveiling the role of intermetallic present in Al matrix and their contribution to the inhibition mechanism, particularly the long-term durability of the inhibitor systems.

104p runthenight04 02-02-2023 9 2   Download

The growth of waterborne pathogens and the discharge of partially treated or non-treated chemical waste has become a severe environmental and health risk. Conventional wastewater treatment methods have become less effective, and most current techniques require multiple stages for the disinfection of antimicrobial-resistant (AMR) pathogens and the combined removal of toxic, non-biodegradable, or emerging priority pollutants from wastewater.

273p runordie3 06-07-2022 16 2   Download

Multimedia communications includes many efficient and highly efficient methods for exchanging information, an issue that is becoming increasingly necessary in the context of the rapid advancement of advanced network technologies such as broadband, wireless networks.

27p capheviahe27 23-02-2021 19 3   Download

The thesis proposes a number of image retrieval methods to improve image retrieval accuracy. These methods will address issues of reducing semantic gaps between low-level features and high-level concepts of images.

27p capheviahe26 25-01-2021 18 4   Download

Semiconductors nanoparticles have quantum size effects and non-linear optical characteristics as well as high quantum efficiency, making them next-generation materials that can be applied in various optoelectronic devices. Semiconductor nanoparticles have attracted much attention because of their novel electric and optical properties originating from surface and quantum confinement effects.

5p tamynhan5 10-12-2020 14 2   Download

This paper presents a data classification problem and methods to improve imbalanced data classification. Especially, biomedical data has a very high imbalance rate and the sample identification of minority class is a very important. Many studies have shown that border elements are important in imbalanced data classification such as Borderline-SMOTE, Random Under Border Sampling.

10p tamynhan9 02-12-2020 15 2   Download

In this study, the selective oximation of structurally diverse aromatic aldehydes (versus ketones) to the corresponding aldoxime derivatives was investigated using the combination system of NH2OH·HCl and bis-thiourea complexes of cobalt, nickel, copper and zinc chlorides, MII(tu)2Cl2, in a mixture of CH3CN-H2O (1:1).

10p tocectocec 25-05-2020 12 2   Download

This article presents one of the key approaches to "increasing the efficiency of propellant" by regulation the grain velocity of the initial particles of propellant by absorbing camphor on their surfaces (phlegmatic propellant).

5p abcxyz123_02 03-03-2020 11 1   Download

The result showed that two product spaces were highly similar. However, compared to IPM-QDA, IPM-RDA better improved the discriminability, increased the consensus among the assessors and reduced the variability of ideal profile. These findings indicated that ranking was more efficient than rating in gathering descriptive data using naïve consumers.

7p quilen 30-11-2019 22 1   Download

Purpose of research: Research and seek some measures of equipping with some tactics of cognitive activities for the students in order to improve the problem solving competence and contribute to increase the efficiency of teaching analytics at high schools.

0p cotithanh321 06-08-2019 60 3   Download

Objectives of the study: Focusing on studying how to incorporate of Fe and Cu atoms into GO and SBA-15 frameworks by atomic implantation method to create new, advanced and highly efficient nanocomposite catalysts for DDT treatment.

26p xacxuoc4321 08-07-2019 48 6   Download

(BQ) The paper describes the application of the fuzzy logic analysis coupled with Taguchi methods to optimise the precision and accuracy of the high-speed electrical discharge machining (EDM) process. A fuzzy logic system is used to investigate relationships between the machining precision and accuracy for determining the efficiency of each parameter design of the Taguchi dynamic experiments.

10p xuanphuongdhts 27-03-2017 54 3   Download

A novel plasmid vector pSELECT-1 is described which can be used for highly efficient site-directed in vitro mutagenesis. The mutagenesis method is based on the use of single-stranded DNA and two primers, one mutagenic primer and a second correction primer which corrects a defect in the ampicillin resistance gene on the vector and reverts the vector to ampicillin resistance. Using T4 DNA polymerase and T4 DNA ligase the two primers are physically linked on the template. The non-mutant DNA strand is selected against by growth in the presence of ampicillin.

5p zingzing09 24-04-2013 58 4   Download

Populations in Southeast AsiaandSouthChinahave highfrequencies ofa-thalassemia caused by a-globin gene mutations and/or deletions. This study was designed to find an efficient and simple diagnostic test for the mutations and deletions. A duplex polymerase chain reaction (PCR)/denaturing high-pressure liquid chromatography (DHPLC) was used to detect the mutations and deletions. A blinded study of 110 samples, which included 92 a-thalassemia samples with various genotypes and 18 normal DNA samples, was carried out by the methods.

8p zingzing09 24-04-2013 70 2   Download

The collection of seed from planted trees in a Seed Orchard (SO) Seed Production Area (SPA) generally requires access to seed-bearing branches at heights. High lift machinery or climbing methods can be used to obtain required working heights. High lift machinery is the more efficient option, reducing the risks associated with climbing and chainsaw operation. In cases where high lift machinery is not available or too expensive, climbing is a viable option.

13p tam_xuan 02-03-2012 45 4   Download