Article
Chemistry, Physical
Zaheer Uddin, Tariq Yasin, Muhammad Shafiq
Summary: The influence of surface modified boric acid on the physical, chemical, and neutron shielding properties of polyethylene-based composites was investigated in this study. The results showed that composites containing 9 wt% of modified boric acid exhibited excellent shielding properties.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Polymer Science
Chuqing Yao, Yaodong Dai, Qiangqiang Xie, Shuquan Chang, Haiqian Zhang
Summary: A novel flame-retardant and neutron-shielding additive was fabricated by depositing gadolinium phenylphosphonate on boron nitride nanosheets. The resulting additive was combined with silicone rubber to produce a radiation protection composite with excellent properties.
POLYMER DEGRADATION AND STABILITY
(2023)
Article
Chemistry, Physical
A. M. Ismail, N. B. Gad Elmoulaa, R. M. El Shazly, A. Ashry
Summary: This study investigated the optical and nuclear radiation shielding properties of barium titanate (BaTiO3) nanoparticles doped in poly(methyl methacrylate) (PMMA). The results confirmed the successful preparation of nanocomposite films. The inclusion of BaTiO3 nanoparticles significantly reduced the optical bandgap and maintained a moderate transmittance level. The optimal weight percentage of BaTiO3 in PMMA for attenuation of gamma ray and neutron radiation was determined to be 10 wt (%) and 15 wt (%), respectively.
RADIATION PHYSICS AND CHEMISTRY
(2023)
Article
Chemistry, Physical
Seda Nur Yilmaz, Ismail Kutlugun Akbay, Tonguc Ozdemir
Summary: The study developed a flexible composite material containing bismuth (III) oxide and hexagonal boron nitride fillers in a silicone rubber matrix to shield both neutron and X/gamma radiations. The mechanical test results showed that the elastic modulus of the optimum sample improved by 4 times compared to the control sample. The composite material exhibited considerable attenuation ratios for both neutron and X/gamma radiations.
RADIATION PHYSICS AND CHEMISTRY
(2021)
Article
Green & Sustainable Science & Technology
Ola Aziz, E. Salama, Doaa El-Nashar, Assem Bakry
Summary: This study produced composite materials using a combination of natural rubber and acrylonitrile butadiene rubber, along with nano-silica-loaded bismuth (III) oxide. The properties of the composites at different concentrations of Bi2O3 were tested, including gamma attenuation properties and mechanical properties. The results showed that the composites with a concentration of 20 phr exhibited the highest tensile strength and elongation at break. The composites also showed potential for radiation protection applications.
Article
Chemistry, Physical
Pei Dai, Xianfang Meng, Xiaoyi Sun, Anren Cheng, Yueying Guo, Yang Jiao, Yongjun Lu, Liancai Wang
Summary: In this study, poly(3-acrylaminophenylboronic acid) modified graphene oxide (GO-PAAPBA) was prepared by polymerization of 3-acrylaminophenylboronic acid (AAPBA) on the surface of GO. GO-PAAPBA exhibited better dispersion performance than pure GO, which contributed to improved thermal conductivity and mechanical properties. SR/GO-PAAPBA-1.88 with outstanding thermal and mechanical abilities exhibited excellent neutron shielding property.
RADIATION PHYSICS AND CHEMISTRY
(2023)
Article
Chemistry, Physical
Shiqi Weng, Ming Jin, Decheng Wan
Summary: A simple method utilizing PEI and SDBS to fabricate a pH-stable, durable, and porous material is reported, which shows good adsorption performance and chemical stability under optimized conditions.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Inorganic & Nuclear
I. . Erkoyuncu, F. Akman, H. Ogul, M. R. Kacal, H. Polat, I. Demirkol, K. Dilsiz, B. Ertugral
Summary: The shielding efficiencies of ternary composites containing polyester resin, polyacrylonitrile and gadolinium (III) sulfate against gamma and neutron radiations were investigated. Experimentally, theoretically, and using the GEANT4 simulation code, various parameters such as linear and mass attenuation coefficients, half value layer, effective atomic number, radiation protection efficiency, inelastic, elastic, capture and transport numbers, total macroscopic cross section, mean free path, and number of transmitted neutrons were determined to evaluate the shielding capacity. The study found that increasing the amount of gadolinium (III) sulfate improved gamma radiation shielding properties, while increasing the amount of polyacrylonitrile improved neutron shielding properties. The composite coded P0Gd50 exhibited better gamma radiation shielding ability, while the neutron shielding of the sample coded P50Gd0 was also more favorable.
APPLIED RADIATION AND ISOTOPES
(2023)
Article
Nuclear Science & Technology
Boyu Wang, Tianyi Qiu, Jinnan Yin, Menghuai Wang, Shixin Ma, Qi Wang, Lin Yuan, Qinglong Fang, Guoqing Zhang, Yang Liu
Summary: In this paper, a flexible shield for thermal neutrons was fabricated using a blend of functional B4C powder and thermoplastic elastomer SEBS. The results showed that the shield had excellent flexibility and shielding performance, effectively attenuating the transmission of thermal neutrons.
NUCLEAR MATERIALS AND ENERGY
(2022)
Article
Nuclear Science & Technology
Santhosh M. Malkapur, Shobha S. Ghodke, P. N. Sujatha, Yashoda Singh, K. S. Shivakumar, Meghanath Sen, Mattur C. Narasimhan, Abhishek Pulgur
Summary: In this study, waste plastics and byproducts from the iron industry were used to create a novel concrete mix for radiation shielding. The results showed that this concrete mix exhibited acceptable compressive strength and significantly enhanced shielding capabilities against both gamma and neutron radiations.
PROGRESS IN NUCLEAR ENERGY
(2021)
Article
Polymer Science
Sajith Thottathil Abdulrahman, Bindu Patanair, Vineeth Puthuparampil Vasukuttan, Sabu Thomas, Emmanuel Cadel, Fabien Cuvilly, Allisson Saiter-Fourcin, Zakiah Ahmad, Maciej Jaroszewski, Michal Strankowski, David Laroze
Summary: Novel materials with neutron shielding property were developed by incorporating boron compounds into HDPE/EPDM blends. The morphology, thermal, mechanical, and neutron attenuation properties of the blends were investigated. Results showed that the addition of EPDM improved the ductility of HDPE, but reduced its tensile strength and modulus. The BA and BC filled composites exhibited lower tensile strength and modulus but significantly increased tensile toughness. The NBC filled composites showed only marginal improvements in tensile toughness, tensile strength, and modulus.
EXPRESS POLYMER LETTERS
(2022)
Article
Agricultural Engineering
Guo-Kai Zhao, Er-Liang Cui, Shuangyu-Zhuo Wang, Fei-Zhou Li, Ming-Qiang Zhu
Summary: The synthesis of electromagnetic interference (EMI) shielding composites is an effective strategy to combat electromagnetic radiation pollution. In this study, Mn0.6Zn0.4Fe2O4 (MZF) and carbon black (CB) were added to a emulsion made of Eucommia ulmoides rubber (EUR) and epoxy resin (EP) to prepare the MZF/CB/PEUR (EP@EUR) composites. The uniform distribution of CB created a conductive network that facilitated dipole polarization and conduction losses. Additionally, the inclusion of MZF provided a shielding mechanism through natural resonance and enhancement of the conducting network, resulting in an optimized complex dielectric constant and a high-level resonance peak in the 8.2-12.4 GHz frequency range. By conducting a series of filler loading experiments, the optimal loading concentrations of CB (5%) and MZF (25%) were determined. Furthermore, the MZF/CB/PEUR composites exhibited excellent corrosion resistance in acid/alkali environments. These findings contribute to the development, application, and mechanism research of environment-friendly dielectric-magnetic EMI shielding composites using EUR as a matrix.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Environmental Sciences
Xue Yang, Chengcheng Jin, Kai Yu, Miaomiao Tian
Summary: In this study, a hollow CuO/Cu2O octahedron adsorbent was prepared with a carambola matrix shape via the hydrothermal method. The CuO/Cu2O octahedron was modified by silane emulsion self-assembly and then molecularly imprinted with dopamine to obtain Cu@B@PW9@MIPs. This adsorbent showed high efficiency in removing phenol and has the potential to become a promising biological enzyme catalyst for dephenolization.
ENVIRONMENTAL RESEARCH
(2023)
Article
Construction & Building Technology
Junhong Yin, Ge Yan, Yajun Lv, Haibing Zheng, Yonghui Hou, Shoukai Chen, Juntao Dang, Chenhui Zhu
Summary: This study investigated the effect of adding acrylamide-saturated super absorbent polymer (SAP) to high-strength mortar on neutron shielding performance. The results showed that the addition of SAP increased the fluidity and hydration degree of the mortar, refined the pore structure of the matrix, and significantly improved the fast neutron shielding effect.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Biotechnology & Applied Microbiology
Wei-Jen Chan, Han-Lin Cho, Venkatesh Goudar, Sasinan Bupphathong, Chi-Hung Shu, Chi Kung, Fan-Gang Tseng
Summary: PVA/BA NPs showed high boron-loading capacity, preferential accumulation in brain and oral cancer cells, and lower cytotoxicity towards these cells compared to fibroblasts and macrophages. The results suggest that PVA/BA NPs could potentially serve as an efficient delivery system for BNCT with improved therapeutic outcomes.
Article
Materials Science, Biomaterials
Muge Asik, Ismail Kutlugun Akbay, Sadin Ozdemir, Rukan Genc
Summary: pH-responsive self-healing hydrogels from cross-linked tragacanth gum (TG) were developed as a controlled antibiotic release system. These hydrogels can sustain multiple cycles of healing and separation while maintaining their mechanical and healing properties. The loaded Cf-TG hydrogels showed slow drug release and excellent antibacterial activity against both gram-negative and gram-positive bacteria, with a robust inhibition of biofilm formation.
INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS AND POLYMERIC BIOMATERIALS
(2023)
Article
Polymer Science
Ummu Habibe Erdag, Onur Sahin, Aysegul Koroglu, Tonguc Ozdemir, Dogu Omur Dede
Summary: This study investigated the effect of different denture cleaning methods on the surface roughness and color stability of PEEK dental materials. The results showed that many cleaning procedures can be safely used for PEEK polymers in terms of color stability and surface roughness.
Article
Biochemistry & Molecular Biology
Aykut Oruc, Kadriye Yagmur Oruc, Karolin Yanar, Murat Mengi, Aysel Caglar, Bahar Ozturk Kurt, Mehmet Altan, Osman Fuat Sonmez, Ufuk Cakatay, Hafize Uzun, Gonul Simsek
Summary: Through studying rats with glutamate-induced neurotoxicity, it was found that metformin may exert neuroprotective effects and increase neuronal survival through zinc-dependent inhibition of GSK-3 beta.
BIOLOGICAL TRACE ELEMENT RESEARCH
(2023)
Article
Pediatrics
Yusuf Elgormus, Omer Okuyan, Hafize Uzun
Summary: This study aimed to evaluate the relationship between vitamin D status and systemic inflammatory markers NLR, LMR, and PLR in newborns. The results suggest that vitamin D deficiency in newborns may be associated with inflammation and changes in NLR, LMR, and PLR. NLR and other hematologic indices may serve as non-invasive, simple, easily measurable, and cost-effective markers of inflammation in newborns.
Article
Virology
Omer Okuyan, Yusuf Elgormus, Seyma Dumur, Ugurcan Sayili, Hafize Uzun
Summary: This study examined the relationship between SII, NLR, and PLR with clinical findings of RSV infection in children with LRTI. The results showed that CRP levels were higher in RSV positive cases, while NLR, PLR, and SII were lower in these cases. CRP performed better than other blood parameters as a marker. Determining the cause of the disease using these parameters can aid in disease management and avoid unnecessary antibiotic use.
Article
Chemistry, Multidisciplinary
Ahmet Gungor, Tonguc Ozdemir, Ruekan Genc
Summary: In this study, PNIPAM, P(NIPAM-co-VIm), and P(NIPAM-co-VIm)-g-PEG were synthesized to investigate the release of 5-FU at different temperatures and pH values. The results showed that the release ratio of 5-FU was 95% in the medium with pH 7.4 and temperature 37 degrees C. Therefore, P(NIPAM-co-VIm)-g-PEG hydrogels could be beneficially used as a material in targeted drug delivery systems.
Article
Immunology
Omer Okuyan, Yusuf Elgormus, Ugurcan Sayili, Seyma Dumur, Ozlem Erkan Isik, Hafize Uzun
Summary: This study evaluated the impact of the RV vaccine on the natural course of RV infections. The results showed that children who received the RV vaccine had lower rates of fever and hospitalization for acute gastroenteritis (AGE), and breastfeeding was also associated with a lower risk of infection. The neutrophil-lymphocyte ratio (NLR), platelet-lymphocyte ratio (PLR), and systemic immune inflammatory index (SII) were significantly higher in the RV-unvaccinated group.
Article
Medicine, General & Internal
Pelin Uysal, Arzu Yuksel, Sinem Durmus, Caglar Cuhadaroglu, Remise Gelisgen, Hafize Uzun
Summary: In this study, the relationship between NF-kappa B, oxidative stress, and disease severity in new COVID-19 patients was investigated. LOX-1, NF-kappa B, and oxLDL levels were found to be higher in COVID-19 patients compared to healthy subjects. oxLDL showed the highest discrimination power in distinguishing COVID-19 patients.
FRONTIERS IN MEDICINE
(2023)
Article
Medicine, General & Internal
Derya Ozturk, Adem Melekoglu, Ertugrul Altinbilek, Mustafa Calik, Arzu Kosem, Hakan Kilci, Naile Fevziye Misirlioglu, Hafize Uzun
Summary: This study aimed to investigate the associations between serum irisin levels and acute myocardial infarction (AMI). The findings showed that STEMI patients had significantly lower irisin levels compared to control subjects, and these levels were correlated with cTi levels and QTc interval.
INTERNATIONAL JOURNAL OF GENERAL MEDICINE
(2023)
Article
Biochemistry & Molecular Biology
Nevin Fazlioglu, Pelin Uysal, Sinem Durmus, Sibel Yurt, Remise Gelisgen, Hafize Uzun
Summary: This study investigated the relationship between plasma irisin, RBP-4, and adiponectin levels and the severity of OSAS. The results showed that these biomarkers were associated with the disease and could be used for diagnosis in the absence of polysomnography. Patients with an AHI score greater than thirty should be closely monitored for metabolic abnormalities.
Article
Medicine, General & Internal
Gulseren Sagcan, Zeki Dogan, Hafize Uzun, Caglar Cuhadaroglu, Gulfer Okumus, Orhan Arseven
Summary: This study found that higher levels of NT-proBNP and GDF-15 were associated with the severity, prognosis, and mortality of acute pulmonary embolism.
INTERNATIONAL JOURNAL OF GENERAL MEDICINE
(2023)
Article
Pharmacology & Pharmacy
Z. Dogan, S. Durmus, D. D. Ergun, R. Gelisgen, H. Uzun
Summary: This study evaluated the effectiveness of ranolazine on hypoxia-inducible factor-1 alpha (HIF-1 alpha) and oxidative stress in H9c2 cardiomyocyte cells. The results showed that ranolazine can protect cardiomyocytes from oxidative damage induced by methotrexate (MTX) by reducing oxidative stress and increasing antioxidant capacity markers. The antioxidant properties of ranolazine may contribute to these protective effects.
EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES
(2023)
Article
Medicine, General & Internal
Zeki Dogan, Gokhan Bektasoglu, Seyma Dumur, Hafize Uzun, Ismail Erden, Mustafa Yurtdas
Summary: This study aimed to evaluate the monocyte count and high-density lipoprotein cholesterol levels and their ratio in patients with deep venous thrombosis and investigate whether this ratio can indicate thrombus burden in terms of thrombus location. The results showed a significantly higher monocyte/high-density lipoprotein ratio in deep venous thrombosis patients compared to the control group. This ratio was associated with thrombus location and the number of vein segments involved.
REVISTA DA ASSOCIACAO MEDICA BRASILEIRA
(2023)
Meeting Abstract
Physiology
Emine Uygur, Hakki Oktay Seymen, Hafize Uzun, Matem Tuncdemir, Aysim Buge Oz, Elif Polat, Ahsen Yilmaz, Elif Yaman
Meeting Abstract
Physiology
Emine Uygur, Hakki Oktay Seymen, Hafize Uzun, Matem Tuncdemir, Aysim Buge Oz, Elif Polat, Ahsen Yilmaz, Elif Yaman
