Article
Biochemical Research Methods
Helen Merina Albert, T. Jemima, C. Alosious Gonsago
Summary: Zinc (tris)-thiourea sulfate (ZTTS), a metal-organic crystal, was synthesized using the slow solvent evaporation technique. The as-synthesized ZTTS crystals were characterized using PXRD, FT-IR spectroscopy, UV-Vis spectroscopy, PL spectroscopy, SHG measurements, and thermal analysis. The results confirmed the orthorhombic structure, functional groups, transparency over the UV-visible spectral region, and potential applications as a nonlinear optical substance of the ZTTS crystals.
JOURNAL OF FLUORESCENCE
(2023)
Article
Materials Science, Ceramics
V. B. Sreedhar, Ramachari Doddoji, K. Kiran Kumar, Vasudeva Reddy Minnam Reddy
Summary: This study focuses on the spectroscopic properties of 1.06 μm laser emission and the characteristics of zincfluorophosphate glasses. By fabricating glasses with varying Nd2O3 concentrations, the researchers analyzed the optical band gap, radiative parameters, and emission spectra, and found favorable spectroscopic parameters such as high gain and low threshold properties for the glass with Nd(1.0) concentration.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Materials Science, Multidisciplinary
Kh. S. Shaaban, Nissren Tamam, Hawra A. Alghasham, Z. A. Alrowaili, M. S. Al-Buriahi, Takwa E. Ellakwa
Summary: Multicomponent molybdenum lithium borate glasses with different Nb2O5 concentrations were synthesized and studied for their structural, thermal, radiation, and optical characteristics. The results showed that the optical properties varied with the Nb2O5 concentration, and glasses with higher Nb2O5 content exhibited better thermal stability and radiation shielding properties.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Jerzy Dryzek, Miroslaw Wrobel, Tomasz Czeppe
Summary: After annealing pure vanadium cold-rolled foils at high temperatures, a significant rearrangement was observed in the dislocation microstructure, followed by recrystallization process between 650 and 800 degrees Celsius, and continuous decrease in lattice strain from 100 to 1100 degrees Celsius.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2022)
Article
Materials Science, Ceramics
I Kashif, A. Ratep
Summary: Fifty Bi2O3-(50-x) B2O3-xMoO(3) glasses with different mol% were prepared by the melt-quenching method. The structural and physical properties of the glasses were investigated using XRD, FTIR, and UV/Vis/NIR spectroscopy. The presence of Bi2MoO6 crystalline phase was observed at certain MoO3 concentrations. The glass samples containing 5 and 10 mol% MoO3 exhibited higher thermal stability.
JOURNAL OF THE AUSTRALIAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Organic
R. Dhanjayan, S. Suresh, S. Srinivasan, C. S. Biju, S. Sahaya Jude Dhas
Summary: In this study, a novel organic single crystal of Brucinium-3,5-dihydroxybenzoate dihydrate (B35D) was successfully grown and characterized. The crystal exhibited good optical, thermal stability, mechanical strength, and excellent nonlinear optical properties.
POLYCYCLIC AROMATIC COMPOUNDS
(2023)
Article
Chemistry, Physical
K. Anitha, M. Subha, M. Tamil Elakkiya
Summary: The study explores the crystal structure and properties of the molecular complex of 3-hydroxy pyridinium 2-hydroxy benzoate using various analytical techniques. It investigates the crystal structure conformation, fluorescence spectra, NMR spectra, as well as nonlinear optical and thermal stability properties of the crystal. The research provides insights into the structural, electronic, and reactivity properties of the crystal through computational methods.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Engineering, Environmental
Hatice Kaplan Can, Serap Kavlak, Fatma Gurbuz, Mehmet Odabasi
Summary: This study investigates the structure, properties, and applications of cyanobacterial EPS, revealing its significant role in bloom formation and stress tolerance. The findings highlight the ecological importance and industrial potential of EPS due to its viscoelastic behavior and thermal stability.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2022)
Article
Thermodynamics
S. L. Reis, R. L. Grosso, E. N. S. Muccillo
Summary: A complex oxide solid solution consisting of lanthanum gallate with partial substitutions for strontium and magnesium was successfully synthesized by the sol-gel route, leading to a sinter active powder and a final material with stoichiometric control. The thermal behavior and bulk conductivity testing showed the suitability of the synthesis method for preparing doped lanthanum gallate.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Chemistry, Analytical
Y. Gomathy, A. Chandrasekaran, M. Aravinthraj, J. Udayaseelan
Summary: The mineralogical analysis of archaeological pottery sherds from the Kundureddiyur archaeological site in Tamil Nadu, India revealed the presence of quartz, calcite, kaolinite, magnetite, and hematite minerals. XRD and FTIR characterization studies provided insights into the firing conditions and temperatures reached during manufacturing, with all samples fired below 900°C. EDS analysis confirmed the firing temperature by identifying major elements in the pottery samples.
MICROCHEMICAL JOURNAL
(2021)
Article
Metallurgy & Metallurgical Engineering
S. K. Samal, M. K. Mohanty, B. Mishra, S. C. Mishra
Summary: The study demonstrates the thermal transformation behavior of chromite and manganese ores with varying compositions, showing how the quality of ore governs the process kinetics and economy of the ferroalloy industry.
MINING METALLURGY & EXPLORATION
(2021)
Article
Chemistry, Physical
D. Reuben Jonathan, Era Angeline Shirmila, M. Krishna Priya, D. Angeline Shirmila, A. Anish Fathima, R. Yuvashri, G. Usha
Summary: Two important curcumin derivatives were synthesized and characterized for their chemical and physical properties. The compounds exhibited promising crystalline structure, optical properties, and potent antibacterial activity.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Physical
Edouard Koffi Kouassi, Max Wedjers Manouan, Eulogne Zoro, David Boa, Pierre Benigni, Hmida Zamali, Jacques Rogez, Dalila Hellali
Summary: The study focuses on the thermochemical properties and phase diagrams of alkali nitrate mixtures for thermal storage systems, with a critical analysis of phases and proposing reliable phase change data for pure nitrates. Differential thermal analysis and X-ray diffraction techniques are utilized to investigate the systems, revealing eutectic reactions and polymorphic transitions. By combining experimental data and utilizing the Calphad approach, a reasonable agreement is obtained between calculated results and experimental data, optimizing thermodynamic parameters in the ternary system.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
M. A. Hosseini, M. Ranjbar
Summary: Nanostructured MoO3 films were deposited on glass at different substrate temperatures using an atmospheric solid-fed flame vapor deposition technique. The films exhibited different morphologies and structures depending on the temperature. The MoO3 films turned dark blue after hydrogen exposure, showing localized surface plasmon resonance absorption bands. The films demonstrated significant sensitivity to low concentrations of hydrogen and different working temperatures, with desirable repeatability and selectivity among interfering gases. Sample S300 at a working temperature of 150 degrees C showed the best sensing performance.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Textiles
Vasantha Kumar Shravanabelagola Nagaraja Setty, Govardhan Goud, Sharath Peramanahalli Chikkegowda, Sanjay Mavinkere Rangappa, Suchart Siengchin
Summary: The latest environmental legislations around the world have promoted the usage of biodegradable materials in composite structures. One major limitation of natural fibers is their incompatible hydrophilic nature. In this study, Limonia acidissima shell powder was treated with alkali chemical to enhance its properties. The treatment resulted in improved cellulose content, crystallinity index, and matrix bonding.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Polymer Science
Z. A. Alrowaili, R. M. Ahmed, Ahmed Saleh, Abdelazim M. Mebed, T. A. Taha
Summary: The dielectric properties of PVC-fGO films were studied in different temperatures, showing that the high dielectric constant values at low frequencies in different nanocomposites were induced by the space charge effect from electrode polarization. The maximum barrier height decreased with increasing temperature and was independent of the fGo content. The real dielectric modulus decreased with increasing fGO content, while the AC conductivity increased up to 0.3 wt% of fGO and then decreased.
Article
Engineering, Electrical & Electronic
E. A. Abdel Wahab, Haifa A. Alyousef, A. F. Abd El-Rehim, Kh S. Shaaban
Summary: In this study, a glass system with tungsten ions was synthesized and its optical properties were analyzed. The results showed that increasing the concentration of tungsten ions in the glass resulted in a slight increase in refractive index and optical band gap, while the half-value layer and mean free path decreased.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Kh. S. Shaaban, B. M. Alotaibi, El Sayed Yousef
Summary: This investigation evaluated the structural, optical, and radiation-shielding effectiveness of glasses with the xLa(2)O(3)-(20 - x) TiO2-23SiO(2)-57B(2)O(3) formula. The addition of La2O3 content significantly increased the density, refractive index, ion concentration, and field strength. Optical spectroscopy showed that the indirect optical band gap (E-opt) decreased and the Urbach energy (E-u) increased with La2O3 content. FTIR spectra detected the conversion of BO3 into BO4 tetrahedral units. The glass sample demonstrated superior gamma radiation- and neutron-shielding performance compared to other glasses.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Khamis S. S. Shaaban, Beriham Basha, Ziad A. A. Alrowaili, Mohammad S. S. Al-Buriahi, Essam A. A. Abdel Wahab
Summary: Transparent glasses doped with GeO2 were synthesized using the melt-quench procedure. The glasses' structural properties were examined using XRD and FT-IR. Physical parameters such as oxygen molar volume and packing density were estimated and examined. FTIR results indicated clear structural alterations and the formation of BO3 and BO4 units, resulting in the formation of more stiff networks.
Article
Physics, Multidisciplinary
M. A. Sayed, Beriham Basha, Nuha Al-Harbi, Ateyyah M. Al-Baradi, Kh. S. Shaaban
Summary: The physical, structural, mechanical, optical, and radiation characteristics of glasses with different PbO content were investigated. It was found that as the PbO content increased, the density increased, molar volume decreased, mechanical moduli improved, indirect band gap values decreased, and Urbach energy increased. Moreover, the shielding characteristics and effective removal cross section of the glasses also changed with increasing PbO level.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Chemistry, Physical
Kh. S. Shaaban, B. M. Alotaibi, Z. A. Alrowaili, M. S. Al-Buriahi, A. Ashour, Sayed Yousef
Summary: This study investigated a specific molybdenum borosilicate glass with the composition 61B(2)O(3) - 19SiO(2)- (20-x) MoO3-x CeO2, where x = (0 < x < 12 mol. %). DTA analysis revealed that the amount of CeO2 in the glass influenced its crystallization behavior, with an increase in CeO2 content leading to increased stability. XRD and SEM analysis identified various crystalline phases and microstructural morphologies in the glass samples. The presence of different-shaped particles was observed with increasing CeO(2) concentrations, and the ultrasonic velocities and elastic moduli also increased.
Article
Chemistry, Physical
Kh. S. Shaaban, B. M. Alotaibi, Ateyyah M. Al-Baradi, El Sayed Yousef, A. Ashour
Summary: The conventional melting and annealing procedure was used to manufacture glass matrices with a nominal composition of x La2O3-(20 - x)TiO2-23SiO(2)-57B(2)O(3) and a gradual partial replacement of TiO2 by La2O3. X-ray diffraction (XRD), pulse-echo technique, and differential thermal analysis (DTA) were used to examine the effects of La(2)O(3)3 content on the TiO2-B(2)O(3)3-SiO2 glass. The results showed that the glass transition temperature increased with an increase in La2O3 content, and the elastic properties of the glass also improved.
Article
Multidisciplinary Sciences
Haifa A. Alyousef, Z. A. Alrowaili, Mohamed Saad, Hussain Al-Mohiy, Abdulaziz A. Alshihri, Kh S. Shaaban, M. S. Al-Buriahi, E. A. Abdel Wahab
Summary: A glass system was manufactured by substituting CeO2 for ZnO in concentrations ranging from 0 to 1 mol% in the glass matrix. The mechanical parameters and elastic characteristics of the glass system were evaluated using the Makishima-Mackenzie model and sound wave velocity measurements, respectively. The results showed that increasing CeO2 doping ratio enhanced the density, sound velocities, elastic properties, and microhardness of the glass. The replacement of ZnO with CeO2 improved the shielding capacity of the glass.
Article
Nanoscience & Nanotechnology
B. Basha, Kh. S. Shaaban, E. A. Abdel Wahab
Summary: A series of phosphate glass with varying WO3 content was manufactured using the melt quenching procedure. The glasses' physical and structural characteristics were examined using XRD and FT-IR analysis. Increasing WO3 concentration led to depolymerization of the glass network and enhanced physical, mechanical, and structural parameters. Furthermore, the glass exhibited improved radiation characteristics due to the presence of stronger P-O-W bonds.
DIGEST JOURNAL OF NANOMATERIALS AND BIOSTRUCTURES
(2023)
Article
Materials Science, Multidisciplinary
M. I. Sayyed, M. S. Sadeq, Kh. S. Shaaban, A. F. Abd El-Rehim, Atif Mossad Ali, H. Y. Morshidy
Summary: This study prepared borate glass systems containing lanthanum oxide (La2O3), nickel oxide (NiO), and sodium oxide (Na2O) using the melt quenching technique with varying La2O3/B2O3 contents. The glasses' structural, optical, and radiation shielding characteristics were investigated. It was found that increasing La2O3/B2O3 contents led to increased density, decreased molar volume, and increased average bond density. Additionally, the glasses exhibited enhanced radiation shielding properties with higher La2O3 additions, making them good candidates for radiation shielding materials.
Article
Materials Science, Multidisciplinary
M. I. Sayyed, H. Y. Morshidy, Kh. S. Shaaban, A. F. Abd El-Rehim, Atif Mossad Ali, M. S. Sadeq
Summary: The purpose of this research is to study the structure, optical properties, and radiation shielding effectiveness of radiation shielding glasses based on a specific formula. The addition of BaO to the glasses improves the density and enhances the tetrahedral coordination of boron units, leading to improved optical properties. The glasses also exhibit good radiation shielding performance, outperforming previously reported glasses.
Article
Chemistry, Physical
Kh S. Shaaban, Nuha Al-Harbi, Haifa A. Alyousef, Ateyyah M. Al-Baradi, Atif Mossad Ali, E. A. Abdel Wahab
Summary: Through a melt-quench procedure, B2O3-SiO2-BaO-Na2O glasses were successfully synthesized with varying mol% of Y2O3 added. X-ray diffraction analysis showed the amorphous behavior of the samples. The G 5 sample exhibited the highest density and compactness, while the G 1 sample had the lowest compactness. The increase in shear waves (VT) and longitudinal velocity (VL) was related to structural alterations, as confirmed by DTA study. The glass G 5 showed superior radiation shielding characteristics compared to other glasses.
RADIATION PHYSICS AND CHEMISTRY
(2023)
Article
Clinical Neurology
Juan Diego Alzate, Assaf Berger, Kenneth Bernstein, Reed Mullen, Tanxia Qu, Joshua S. Silverman, Maksim Shapiro, Peter K. Nelson, Eytan Raz, Jafar J. Jafar, Howard A. Riina, Douglas Kondziolka
Summary: This study conducted a quantitative analysis of cerebral arteriovenous malformation flow using visual analysis and a computer-based method, correlating these factors with obliteration response after radiosurgery. The results showed that flow analysis and categorization can predict the probability and time to obliteration. This is important in guiding stereotactic radiosurgery treatment and setting accurate outcome expectations.
JOURNAL OF NEUROSURGERY
(2023)