Article
Chemistry, Analytical
Bidisha Dey, Supriyo Kumar Das, Kaushik Gangopadhyay, Tomoyuki Shibata, Masako Yoshikawa, Supriya Nandy, Arati Deshpande Mukherjee
Summary: This study presents the first measurement of bioavailable strontium and lead isotope ratios from cattle bones and soil samples in the Chalcolithic site of Erenda, coastal east India. The results show that the isotope ratios of the bones differ from that of the soil, suggesting a local origin of the cattle with insignificant preservation changes. Moreover, the study suggests a potential influence of marine strontium on modifying the bioavailable strontium isotope ratio.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Angela Sciatti, Paola Marzullo, Gabriella Chirco, Elena Piacenza, Federica Arcidiacono, Elena Dellu, Delia F. Chillura Martino
Summary: The analysis of organic and mineral content in biological samples helps determine post-mortem changes and the preservation status of ancient human remains. This study focuses on the physical-chemical characterization of bone specimens from different historical periods found in Apulia, Italy. Specific infrared and X-ray spectroscopies were used to evaluate the extent of diagenetic processes and elemental composition. Physical-chemical post-mortem transformations were influenced by soil composition, tissue specificity, burial rituals, probable dietary customs, and pathologies.
Article
Geology
Yang Gao, Jun Liu, Tie-Gang Li, Dong-Dong Zhang, Yan-Chen Yang, Shi-Jiong Han, Qing-Feng Ding, Shuai Zhang
Summary: The study reveals that the ore-forming fluid of the Jiawula deposit is a mixture of mantle-derived and crustal fluids, and the variation of zinc isotopes in sphalerite from the deposit is likely caused by kinetic Rayleigh fractionation. The ore-forming material of the Jiawula deposit is derived from a single source, and the isotopic characteristics of intrusive rocks indicate a high proportion of juvenile material.
ORE GEOLOGY REVIEWS
(2021)
Article
Engineering, Biomedical
Bo Jia, Hongtao Yang, Zechuan Zhang, Xinhua Qu, Xiufeng Jia, Qiang Wu, Yu Han, Yufeng Zheng, Kerong Dai
Summary: Bone defects caused by trauma, tumors, or diseases present challenges for orthopedic surgeons, especially when critical in size. Biodegradable zinc-based metals, particularly Zn-Sr alloys, show promising biocompatibility and osteogenic properties. The Zn-0.8Sr alloy, with its ability to activate multiple signaling pathways for osteogenesis, proves to be an ideal candidate for bone repair, demonstrating favorable in vivo properties and biosafety.
BIOACTIVE MATERIALS
(2021)
Article
Engineering, Environmental
Mayuri Bhatia, Aaron J. Specht, Vallabhuni Ramya, Dahy Sulaiman, Manasa Konda, Prentiss Balcom, Elsie M. Sunderland, Asif Qureshi
Summary: This study evaluated the use of portable X-ray fluorescence (XRF) for analyzing trace metal(loid)s in toenail samples from three populations near Chennai, India. The results showed no proportional bias between ICP-MS and XRF for nickel, zinc, and lead, but some absolute bias was observed. However, a strong proportional bias was found for arsenic and selenium at lower concentrations. Overall, calibrated and evaluated portable XRF has potential for high-throughput assessments at population scales.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Pharmacology & Pharmacy
Gerardo Asensio, Marcela Martin-del-Campo, Rosa Ana Ramirez, Luis Rojo, Blanca Vazquez-Lasa
Summary: Sr/Zn phytate compounds have antimicrobial effects and can form bioactive coatings. Phytic acid has antioxidant and osteogenic properties that are important for bone remodelling. The study explored the antioxidant and osteogenic properties of SrPhy and ZnPhy and found that they can be used in bone regenerative therapies.
Article
Geosciences, Multidisciplinary
Suo-Fei Xiong, Shao-Yong Jiang, Zuo-Hao Chen, Jian-Xin Zhao, Ying Ma, Di Zhang, Zhen-Peng Duan, Pan-Pan Niu, Yao-Ming Xu
Summary: The ages of Zn-Pb deposits have been difficult to determine due to the lack of appropriate mineral chronometers and techniques. However, the use of in situ LA-ICP-MS U-Pb dating of carbonates and barite has allowed for the determination of ages for a Mississippi Valley-type Zn-Pb deposit in South China, shedding light on its mineralization history.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2022)
Article
Geology
Qiaoqiao Zhu, Nigel J. Cook, Guiqing Xie, Cristiana L. Ciobanu, Sarah E. Gilbert, Benjamin Wade, Jing Xu
Summary: Breccia-hosted Sr-(Pb-Zn) mineralization from the Shizilishan deposit in eastern China is formed by the interaction between fluids with low to moderate salinity and a quartz diorite porphyry stock. The research highlights that extensive water-rock interaction can lead to the formation of large celestine deposits when fluid flow is continuous and there are superimposed episodes of high Sr/Ba ratios and moderate dissolved sulfate.
ORE GEOLOGY REVIEWS
(2022)
Article
Geology
Junqin Wang, Dengfei Duan, Xiang Chen, Zhigang Kong, Changqing Zhang, Jiaxi Zhou, Yue Wu
Summary: The Sichuan-Yunnan-Guizhou (SYG) zinc-lead triangle in southwestern China is a significant producer of zinc, lead, silver, and germanium. Most of the zinc-lead deposits in the region are believed to be Mississippi Valley-type (MVT) deposits hosted in carbonate rocks from the later Ediacaran to Permian period. However, the origin of the zinc-lead deposits found in the Mesoproterozoic basement is controversial. This study conducted in situ LA-ICP-MS/MS muscovite Rb-Sr dating and apatite analysis to address this gap. The results challenge the previously proposed MVT model and link the formation of the Daxiao deposit to an extensional setting during the breakup of the Rodinia.
ORE GEOLOGY REVIEWS
(2023)
Article
Geochemistry & Geophysics
Stefan Luth, Fredrik Sahlstrom, Mikael Bergqvist, Alexander Hansson, Edward P. Lynch, Stefan Sadbom, Erik Jonsson, Stefan S. Andersson, Nikolaos Arvanitidis
Summary: In this study, a pilot study integrating automated drill core scanning technology based on simultaneous X-ray computed tomography (XCT) and X-ray fluorescence (XRF) analyses was conducted. The results showed that this technique provides valuable information on 3-D rock textures and structures, chemical composition, and density, which is useful for mineral exploration and research.
Article
Geosciences, Multidisciplinary
Hua-Wen Cao, Qiu-Ming Pei, Xiao Yu, M. Santosh, Guang-Ming Li, Lin-Kui Zhang, Hao Zou, Lei Dong, Ke Gao, Zuo-Wen Dai, Jin-Biao Ai, Shuang-Shuang Lan, Fan Xiang, Ai-Bin Cao
Summary: The study reports the discovery and genesis of the Xiwu Pb-Zn-Ag deposit in the eastern Himalaya, which formed during the late-collisional tectonic transition stage. The ore materials originated from deeper metamorphic rocks and the ore-forming fluids were a mixture of metamorphic fluids and shallow formation waters.
Article
Chemistry, Analytical
Mirco Ramacciotti, Gianni Gallello, Joaquin Jimenez-Puerto, Joan Bernabeu, Teresa Orozco Kohler, Sonia Rubio-Barbera, Agustin Pastor
Summary: A methodological proposal has been developed to test a non-destructive and non-invasive analytical approach for the characterisation of dolerite rock. Geological samples and archaeological stone tools were analysed using multiple techniques, and the results were statistically processed to evaluate affinities and differences among them, as well as the possible provenance of the stone tools.
MICROCHEMICAL JOURNAL
(2022)
Article
Geochemistry & Geophysics
Hongsheng Gong, Runsheng Han, Peng Wu, Gang Chen, Lingjie Li
Summary: The Laoyingqing Pb-Zn deposit in the Sichuan-Yunnan-Guizhou Pb-Zn metallogenic triangle area is believed to have formed synchronously during the late Indosinian orogeny with most other Pb-Zn deposits in the region, indicating a similar ore-forming age and type. The source of Pb in the deposit is mainly derived from mixed crustal Pb in basement rocks, while the sulfur isotopic composition suggests mixing with reduced S from overlying strata. This study concludes that the Laoyingqing deposit and other Pb-Zn deposits in the area are Mississippi Valley-type deposits, providing new insights for exploration in the region.
Article
Geology
Zhixin Zhao, David L. Leach, Junhao Wei, Shengnan Liang, Katharina Pfaff
Summary: The Xitieshan Pb-Zn deposit in the North Qaidam orogenic belt consists of a geologic resource of 64 million tons with high Zn and Pb grades. The mineralized zones are hosted by the Tanjianshan Group in a Middle to Late Ordovician back-arc basin. Sulfur isotopic compositions of ore-stage sulfides suggest sulfur derived from leaching volcanic rocks in the host sequence or magmatic-related fluids.
ORE GEOLOGY REVIEWS
(2021)
Article
Microbiology
Yumi Kim, Sunki Kwon, Yul Roh
Summary: Microbially induced calcium carbonate precipitation (MICP) is a bio-geochemical process involving calcium carbonate precipitation and possible co-precipitation of other metals. The study found that different metals have varying effects on bioprecipitation, with lead and strontium showing over 99% removal efficiency, while copper, zinc, and cadmium exhibited lower removal efficiency. The types and concentrations of metals significantly influenced the mineralogy of calcium carbonates precipitated and the rates of metal removal.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Food Science & Technology
Mayeen Uddin Khandaker, Nwokoma Oliver Chijioke, Nurul' Adillah Binti Heffny, David A. Bradley, Abdullah Alsubaie, Abdelmoneim Sulieman, Mohammad Rashed Faruque, M. Sayyed, K. S. Al-mugren
Summary: The study found that seaweeds contain higher concentrations of essential elements and certain potentially toxic metals, with some metals having similar origins and increased concentrations within the marine ecosystem. While most metals are within recommended daily intake levels, estimated noncarcinogenic and carcinogenic risks exist.
Article
Chemistry, Physical
F. Moradi, S. F. Abdul Sani, M. H. Norazri, N. M. Ung, K. S. Almugren, Kh. Rezaee Ebrahim Saraee, D. A. Bradley
Summary: Small field treatments in radiotherapy have become increasingly important for better control of target volume dose and improved therapeutic ratio. However, the dosimetry of small field techniques is more challenging due to the production of high dose areas with rapid dose rate fall off margins. In this study, Monte Carlo simulations were used to investigate the perturbation effect caused by dosimeter size in radiation fields. The results showed that small size silica fibre TL dosimeters have advantages in small field dosimetry, while conventional LiF TLDs produced significant perturbations, especially in small radiation fields.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Chemistry, Physical
K. S. Almugren, S. F. Abdul Sani, Irzwan Affendy Sulong, S. N. Mat Nawi, A. S. Siti Shafiqah, D. A. Bradley
Summary: This study investigates the use of black carbon charcoal as passive radiation dosimetry, exploring Raman spectroscopy and photoluminescence analysis in graphite charcoal, as well as characterizing the crystal structure using X-ray diffractometry. The findings provide a low-cost yet highly effective system for studying radiation-induced changes in carbon and have potential applications in radiotherapy.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Chemistry, Physical
Air Mohammad Siddiky, Mohammad Rashed Iqbal Faruque, Mohammad Tariqul Islam, Sabirin Abdullah, Mayeen Uddin Khandaker, K. S. Al-Mugren
Summary: The article presents a method of using a metamaterial-incorporated microwave sensor for material characterization, which exhibits high sensitivity and compactness. Numerical studies and simulation validation demonstrate the good performance of the sensor under different permittivity variations.
Article
Chemistry, Physical
K. S. Almugren, S. F. Abdul Sani, M. S. Jaafar, Azhar Mohamad, A. S. Siti Shafiqah, D. A. Bradley
Summary: The study investigates the effects of gamma irradiation pretreatment on potato dextrose agar (PDA) substrate, finding that irradiation doses influence the growth rate of mushroom strains and the physical attributes of PDA, providing a low-cost and effective method for mushroom irradiation.
RADIATION PHYSICS AND CHEMISTRY
(2023)
Article
Chemistry, Physical
Md. Salah Uddin Afsar, Mohammad Rashed Iqbal Faruque, Sabirin Abdullah, Mohammad Tariqul Islam, Mayeen Uddin Khandaker, K. S. Al-Mugren
Summary: This research article presents a new compact metamaterial in the shape of a power tiller wheel with four resonance peaks and negative permittivity in specific frequency ranges. The proposed metamaterial unit cell has a small electrical dimension and high effective medium ratio. Computer simulation technology confirms the performance of the metamaterial structure, and its potential applications include wireless communication in S-, C-, and X-bands.
Article
Chemistry, Analytical
Asmaa M. Elsayed, Fatemah H. Alkallas, Amira Ben Gouider Trabelsi, Salem AlFaify, Mohd Shkir, Tahani A. Alrebdi, Kholoud S. Almugren, Feodor V. Kusmatsev, Mohamed Rabia
Summary: A graphene oxide/poly 3-methyl aniline photodetector was developed for light detection in the UV, Vis, and IR spectrum. The composite exhibited good optical properties and a decrease in bandgap after formation. The photodetector showed promising current density and R/D values in the UV and IR regions, making it an excellent candidate for future light detection instruments.
Article
Crystallography
Raja Abdul Basit, Zeeshan Abbasi, Muhammad Hafeez, Pervaiz Ahmad, Jahanzeb Khan, Mayeen Uddin Khandaker, Kholoud Saad Al-Mugren, Awais Khalid
Summary: This study reports the successful synthesis of ZnO nanoparticles (NPs), CuO NPs, and ZnO/CuO nanocomposite using an eco-friendly method with Corriandrum sativum leaf extract as a capping agent. The synthesized materials were characterized using XRD, FTIR, UV-Vis, and SEM, and showed spherical morphology with average sizes of approximately 25 nm, 55 nm, and 11 nm, respectively. The synthesized nanomaterials were evaluated for photocatalytic activity, with the nanocomposite showing the highest photodegradation of methylene blue dye compared to the other materials. This work could provide a pathway for the decontamination of harmful dyes in wastewater from various industries.
Article
Materials Science, Multidisciplinary
Fatemah H. Alkallas, Asmaa M. Elsayed, Amira Ben Gouider Trabelsi, Salem AlFaify, Mohd. Shkir, Tahani A. Alrebdi, Kholoud S. Almugren, Feodor V. Kusmatsev, Mohamed Rabia
Summary: Rolled graphene oxide (roll-GO) with a unique morphology was synthesized and used to prepare a roll-GO/PANI composite material. The composite exhibited a small bandgap and excellent optical properties across a wide range. Structural analysis confirmed the chemical structure and functional groups present in the composite material. The roll-GO/PANI composite material showed high light sensitivity as a photodetector, with enhanced current density under light compared to dark conditions at different wavelengths.
Article
Chemistry, Physical
Md. Salah Uddin Afsar, Mohammad Rashed Iqbal Faruque, Sabirin Abdullah, K. S. Al-Mugren
Summary: This paper presents a commercially viable metal-dielectric-metal triple-band metamaterial absorber. The absorber consists of four compact symmetric circles with a swastika-shaped metal structure bonded by two split-ring resonators. Copper and FR 4 dielectric are used as the materials for the ground plate and resonator portion of the top layer, respectively. The absorber shows high absorbance at three resonance peaks with frequencies of 3.03, 5.83, and 7.23 GHz.
Article
Chemistry, Physical
Tayaallen Ramachandran, Mohammad Rashed Iqbal Faruque, Mandeep Singh Jit Singh, K. S. Al-Mugren
Summary: This study focuses on a multi-layered symmetric metamaterial design for C- and X-band applications. The proposed design achieved the miniaturisation concept by arranging unit cells in a multi-layer structure, and exhibited unique properties such as a highly effective medium ratio and left-handed characteristics. Simulation analyses and parametric studies were performed to validate the performance of the design.
Article
Materials Science, Multidisciplinary
Ahmed Adel A. Abdelazeez, Amira Ben Gouider Trabelsi, Fatemah. H. Alkallas, Salem AlFaify, Mohd Shkir, Tahani A. Alrebdi, Kholoud S. Almugren, Feodor V. Kusmatsev, Mohamed Rabia
Summary: This paper presents an innovative, cost-effective, and environmentally sustainable approach to producing high-quality graphene nanosheets on a large scale. Through comprehensive analysis using advanced techniques, the thickness of the deposited films was found to profoundly influence the material's interaction with photons.
Article
Materials Science, Multidisciplinary
Amira Ben Gouider Trabelsi, Asmaa M. Elsayed, Fatemah. H. Alkallas, Salem AlFaify, Mohd. Shkir, Tahani A. Alrebdi, Kholoud S. Almugren, Feodor V. Kusmatsev, Mohamed Rabia
Summary: This paper describes the synthesis of free-standing rolled graphene oxide (roll-GO) and polypyrrole (Ppy) and the development of a photodetector using these materials. The roll-GO exhibited a rolled structure and had a small bandgap of 2.4 eV. The photodetector showed high photoresponsivity and detectivity values, which were further improved by the addition of Ppy. The Ppy/roll-GO/tape photoelectrode demonstrated excellent performance and potential for industrial applications.
Article
Optics
Ahmed Adel A. Abdelazeez, Amira Ben Gouider Trabelsi, Fatemah H. Alkallas, Salem AlFaify, Mohd. Shkir, Tahani A. Alrebdi, Kholoud S. Almugren, Feodor V. Kusmatsev, Mohamed Rabia
Summary: This study examines the effects of Si and Si-P doping and co-doping on monolayer graphene. The results show that both Si doping and Si-P co-doping significantly affect the bonding arrangement and electron concentration of the graphene surface. The HOMO-LUMO gap and absorption wavelength of the graphene sheets were found to decrease in the doped and co-doped systems, indicating their potential for photodetector applications.
Article
Health Care Sciences & Services
Arnab Das, Adittya Barua, Md. Ajwad Mohimin, Jainal Abedin, Mayeen Uddin Khandaker, Kholoud S. Al-mugren
Summary: The study introduced a laser-based sensing device to overcome the malfunctioning issues of traditional hand sanitizer dispensers, demonstrating the design and fabrication of a low-cost, touchless automated sanitizer dispenser for public use. The device was found to be more efficient and cost-effective compared to other dispensers in the market, showing potential for reducing the spread of infectious diseases in society.
