OALib Journal
  OALib Journal is an all-in-one open access journal (ISSN Print: 2333-9705, ISSN Online: 2333-9721). It accepts a manuscript for the peer-review processing, typesetting, publication and then allocated to one of the 322 subject areas. The article processing charge for publishing in OALib journal is Only $99. For more details, please contact service@oalib.com. Submit now
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Apr 28, 2023Open    Access

Ultraviolet Light (UV)-Induced Photocatalytic Degradation of Diclofenac Using Naturally Derived TiO2@rGO Composite

Lorenz E. Borromeo, Lea P. Bongat, John Patrick S. Nunez, Kirby F. Mendioro, Jocelyn R. Balisnomo
Diclofenac (DCF) is a non-steroidal anti-inflammatory drug (NSAID) used to relieve pain in joint-related diseases. It is not completely metabolized after consumption and cannot be easily removed using conventional wastewater treatment. DCF has been detected in water bodies and may pose chronic effects on the endocrines of living organisms even at low-level exposure. Heterogeneous photocatalysis provides an alternative and efficient method of degrading DCF. In this study, the photocatalytic remov...
Open Access Library J.   Vol.10, 2023

Mar 17, 2023Open    Access

Property Comparison of Golden Adornments with Different Characteristics Based on XRD

Yijie Zhu, Danjing Hu, Qianyun Lu, Xuejun Yan, Qiujin Peng, Xu Zhang
In this paper, the properties of golden adornments with four different characteristics were analyzed and compared by means of gold content analysis, XRD analysis, Vickers hardness test and wear resistance test. The results showed that the alignment of Au atomic crystal from 3D electroforming process and 5G process is different from traditional process and former process. Besides, products made by 3D electroforming process have the best Vickers hardness and wear resistance. The mechanical propert...
Open Access Library J.   Vol.10, 2023

Aug 30, 2021Open    Access

Determination of the Content of Impurity Elements in Aluminum Alloy by XRF Analysis

Jinge Zhou, Jie Shi, Bo Zhang, Shaoqin Li
Aluminum alloy is one of the most widely used metal materials in today’s society. Measurement and analysis of its impurity elements can effectively improve the performance of aluminum alloy. Energy dispersive X-ray fluorescence spectrometry (EDXRF) was used to analyze the types and contents of impurity elements in aluminum alloys, and the best working conditions for the EDXRF analyzer to measure impurity elements in aluminum alloys were determined. The absorption and enhancement effect of Al, Zn...
Open Access Library J.   Vol.8, 2021

Jul 19, 2021Open    Access

Weld Metal Dendritic Structure Modification by Dispersed Refractory Oxide Particles

Viktor Volodymyrovych Holovko, Sergiy Mikolayovich Stepanyuk, Dmytro Yuriiovych Yermolenko
The paper deals with the modification effect of dispersed oxides particles (Al2O3, MgO, ZrO) on the dendrite structure in low-alloy weld metal. The flux-core wire 1.6 mm diameter for inoculating of oxides powder to weld pool was purposed. Obtained results confirmed an influence of inoculated refractory oxides on dendrites size and morphology, microstructure and mechanical properties of the weld metal.
Open Access Library J.   Vol.8, 2021

Jul 09, 2021Open    Access

Prospecting of Gold Mineralization Indices in the Eastern of Meiganga (Adamawa Region, Cameroon)

Bien à Nwos Prisca-Gaelle, Kanouo Sylvestre Ngouo, Yongue Fouateu Rose, Toiditan Richard, Keubroh Djitoguem Séverin
In order to search for secondary gold in the eastern part of Meiganga, alluvial and eluvial field explorations, geological and mineralogical, morphoscopical studies have been carried out in Fell, Gbatoua, and Kombo-Laka. Alluvial and eluvial field explorations have allowed to locate six main concentrations points of gold and heavy minerals (olivine, zo?site, rutile, zircon, …). Many rocks types are found: volcanosedimentary (basalts, rhyolites, conglomerates), metamorphic (quartzites, chlorito...
Open Access Library J.   Vol.8, 2021

May 20, 2020Open    Access

Discussing the Coloration Mechanism of Luodian Jade from Guizhou

Lei Wang, Jinhui Lin, Taiping Ye, Jing Tan, Bing Wang, Lin Yang
In this paper, we have discussed the coloration mechanism based on visible absorption spectra testing by selecting three typical samples of Luodian jade with white, pallor and cyan. The attribution analysis of absorption spectra showed that absorption of Luodian jade in visible light mainly includes charge transfer spectrum of Fe2 → Ti4 (at 490 nm - 500 nm) and Fe2 → Fe3 (at 523 nm - 536 nm, 646 nm - 657 nm), electron transition 6A1 → 4T2 (4G) of Fe3 (at 615 nm - 632 nm, 685 nm - 694 nm) an...
Open Access Library J.   Vol.7, 2020

Apr 23, 2020Open    Access

Toxicity of Binary Mixtures of Phenol, Zinc and Cadmium to Yeast Strains Isolated from Hydrocarbon Impacted Soil

O. R. Nlemolisa, C. E. Nwanyanwu, C. O. Akujobi, F. C. Ihenetu, R. C. Nwokorie, C. C. Obasi, U. N. Kemka, K. H. Uzoho, M. C. Nwoke
Toxicity of zinc, cadmium and phenol and their binary mixtures were determined based on inhibition of dehydrogenase activities of yeasts strains isolated from hydrocarbon impacted soil. The yeasts isolated from the hydrocarbon impacted soil were identified as Saprochaete sp. and Cryptococcus sp. The toxicity of chemicals and their mixtures were evaluated in the concentration range of 0 - 16 mM for phenol, 0 - 5 mM for zinc and 0 - 0.4 mM for cadmium. The binary mixture ratios were evaluated. The...
Open Access Library J.   Vol.7, 2020

May 29, 2019Open    Access

An Investigation on Weldability of Flared D9 Tube to Cylindrical SS316L (N) Plug Using Electro-Magnetic Compression Welding

Satendra Kumar, G. K. Dey, Archana Sharma
Geometry configurations of joining partners (similar/dissimilar metals) are important to achieve effective and smooth joint in electromagnetic (EM) compression welding. Accordingly, design of welding tool (multi-turn coil) becomes challenging [1]. EM welding of flared D9 flyer tube to SS316 L (N) straight cylindrical plug has been performed under a discharge voltage of 15 - 17 kV with coil current 230 - 250 kA at
Open Access Library J.   Vol.6, 2019

May 28, 2018Open    Access

A Review of Stress Corrosion Cracking of Welded Stainless Steels

Ekaterina A. Krivonosova
This article gives a brief review of scientific researches of high-alloyed chromium-nickel steels stress corrosion cracking (SCC) process of welded joints. Welded joints are one of the most complex objects from the standpoint of the general theory of corrosion fatigue of metals. During their operation a number of problems arise related to the heterogeneity of the material properties, the complexity of the structure, the presence o
Open Access Library J.   Vol.5, 2018

Feb 22, 2017Open    Access

Hot Rolling of Large Gears

Dirk Landgrebe, Andreas Sterzing, Mike Lahl, Thomas Druwe, Anne Manuela Taubert
Forming processes are generally characterized by a high degree of material utilization as well as short process times and, consequently, a decent economic efficiency. Furthermore, incremental forming enables the use of relatively low forming forces which results in a more compact design of the used machines. These conveniences are utilized in terms of roll forming with round tools to form gears and thread
Open Access Library J.   Vol.4, 2017


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