Article
Chemistry, Physical
Paulina Varguez-Catzim, Nayeli Rodriguez-Fuentes, Rocio Borges-Argaez, Mirbella Caceres-Farfan, Abigail Gonzalez-Diaz, Alejandro Alonzo-Garcia, Santiago Duarte, Manuel Aguilar-Vega, Maria Ortencia Gonzalez-Diaz
Summary: The new biomimetic membranes for wound dressing applications were fabricated by blending PVA and PAMPS, crosslinking with succinic acid, showing a bilayer structure with dense PAMPS layer and porous PVA/PAMPS layer. The membranes exhibited good water swelling, mechanical properties, cell viability, inhibition against bacteria, and enhanced fibroblast cell proliferation and biocompatibility. The dense layer protects wounds from microorganisms, infections, and contamination, while the porous layer provides fibroblast cell proliferation and biocompatibility.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Yavuz Yagizatli, Alpay Sahin, Irfan Ar
Summary: Fuel cell technology, especially the PEM fuel cell, shows great promise as a clean and sustainable energy option. The study focuses on the development of a blend membrane using SPEEK and PVA with different sulfo-nation degrees, aiming to improve the stability and prevent dissolution in water. Thermal crosslinking was found to effectively prevent the dissolution of membranes and enhance their stability. Comparative analysis of various membrane characteristics demonstrated the improved structural stability of the thermally crosslinked membranes.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Guixian Li, Shoudeng Wang, Hongwei Li, Peng Guo, Yanru Li, Dong Ji, Xinhong Zhao
Summary: Palladium-copper alloy nanostructured catalysts loaded on carbon support have shown high activity and stability in alkaline direct methanol fuel cells. This study presents the synthesis and characterization of PdxCuy/XC-72 nanoalloy catalysts, with different ratios of Pd and Cu, using a one-step chemical reduction method. The catalysts were characterized using various analytical techniques, and the results indicate that Pd3Cu2/XC-72 catalysts exhibit superior electronic structure, leading to higher mass activity enhancement and improved durability for methanol oxidation reaction.
Article
Chemistry, Physical
Nebi Yelegen, Berre Kumuk, Ruveyda N. Kaplan, Mustafa Ilbas, Yuksel Kaplan
Summary: This study conducted performance tests on a unitized regenerative PEM electrolyzer/fuel cell and performed numerical modeling. The validity of the developed model was confirmed by experimental results. Prior to the performance tests, leakproofness tests were conducted and the appropriate torque force was optimized to reduce contact resistance and performance loss. In the electrolyzer mode, 0.019 slpm of hydrogen and 0.0095 slpm of oxygen gas were produced, while a power density of 0.353 W/cm2 was obtained in the fuel cell mode.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Biochemistry & Molecular Biology
Roxana Gonzalez-Stegmaier, Adam Aguirre, Constanza Carcamo, Patricia Aguila-Torres, Franz Villarroel-Espindola
Summary: This study evaluated the immunomodulatory effects of a recombinant domain (rND1) from flagellin in human peripheral blood mononuclear cells (PBMCs) and monocyte-derived dendritic cells (MoDCs). It was found that rND1 induced upregulation of proinflammatory cytokines in PBMCs, with IL-1 beta showing the highest increase. MoDCs treated with rND1 showed low expression of co-stimulatory and HLA-DR molecules, indicating an immature phenotype.
Article
Plant Sciences
Jose P. Fonseca, Venkatachalam Lakshmanan, Clarissa Boschiero, Kirankumar S. Mysore
Summary: The absence of pattern recognition receptors (PRRs) in plants may influence the rhizosphere microbiome, but the diversity of the rhizosphere microbial population did not show significant differences between PRR mutants and wild-type plants. The FLS2 receptor was found to modulate the beta-diversity of the rhizosphere-associated microbiome.
Review
Immunology
Shota Torigoe, Charles R. Schutt, Sho Yamasaki
Summary: This review discusses how immune receptors recognize lipid components to initiate immune responses, and explores the role of C-type lectin receptors in promoting immune responses, as well as the importance of inhibitory C-type lectin receptors in self and pathogen evasion strategies.
INTERNATIONAL IMMUNOLOGY
(2021)
Review
Virology
Rui Zhou, Li Liu, Yu Wang
Summary: Virus invasion triggers the host's innate immune response, leading to the production of cytokines and interferons to fight pathogens, and viral proteins are also recognized by pattern recognition receptors. Different TLRs play dual roles of protection and harm for specific viruses, and the relationship between TLRs and viral proteins is crucial for activating innate immunity.
JOURNAL OF MEDICAL VIROLOGY
(2021)
Article
Immunology
Bradley A. Hamilton, J. Fraser Wright
Summary: This article discusses the host immune responses that limit durable therapeutic gene expression in AAV-based human gene therapies. A strategy of removing pathogen-associated molecular patterns in AAV vector genomes to overcome immunological barriers is proposed.
FRONTIERS IN IMMUNOLOGY
(2021)
Review
Cell Biology
Xuanzhi Zhu, Hanyao Huang, Lei Zhao
Summary: Atherosclerosis is a chronic artery disease, and periodontitis is a risk factor for it. There is a molecular pathological mechanism connecting the two conditions.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2022)
Review
Biochemistry & Molecular Biology
Olalekan Olanrewaju Bakare, Arun Gokul, Adewale Oluwaseun Fadaka, Ruomou Wu, Lee-Ann Niekerk, Adele Mariska Barker, Marshall Keyster, Ashwil Klein
Summary: This review examines the applications, features, production, expression, and challenges of plant antimicrobial peptides (PAMPs) and explores their significance in genomics, transcriptomics, proteomics, and their expression against pathogens. The review also highlights the potential therapeutic applications of PAMPs in medicine and agriculture, as well as their recyclability and conversion into more potent antimicrobial agents for sustainable development.
Article
Fisheries
Joo Jie Ching, Adawiyah Suriza Shuib, Noorlidah Abdullah, Nazia Abdul Majid, Norhidayah Mohd Taufek, Jumria Sutra, Mohammad Noor Amal Azmai
Summary: The study demonstrates that supplementation of hot water extract from mushroom stalk waste enhances the immune responses of red hybrid tilapia and increases resistance against bacterial and viral infections.
FISH & SHELLFISH IMMUNOLOGY
(2021)
Article
Chemistry, Physical
Pengpeng Xu, Qinglin Wen, Siyi Zou, Hanqing Jin, Yali Li, Wei Li, Can He, Saifei Pan, Bin Tian, Liuming Yan, Fandi Ning, Xiaochun Zhou
Summary: This study proposes an alveolus-inspired flow field design to improve the internal environment of vapor-fed passive DMFC. The experimental results show that the alveolus-inspired flow field can significantly enhance the DMFC performance (20.3 mW cm(-2)) compared to the traditional design, and it also exhibits better resistance to harsh weather conditions.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Applied
Paulina Varguez-Catzim, Wilberth Herrera-Kao, Rita Sulub-Sulub, Humberto Vazquez-Torres, Moises Alcaraz Calderon, Manuel Aguilar-Vega, Maria Ortencia Gonzalez-Diaz
Summary: Random copolymers of PVA and PAMPS were synthesized through free radical polymerization in water followed by alkaline hydrolysis in methanol. The copolymers exhibited higher thermal stabilities and well-correlated ion exchange capacities with the molar composition of PAMPS. They showed good solubility in water and had the ability to form dense and porous membranes, making them suitable for various polymeric membrane applications.
REACTIVE & FUNCTIONAL POLYMERS
(2023)
Review
Biochemistry & Molecular Biology
Smruti Mahapatra, Bristy Ganguly, Saswati Pani, Ashis Saha, Mrinal Samanta
Summary: This article provides an overview of various aspects of Toll-like receptors (TLRs) in fish, including their history, classification, structure, function, signaling pathways, and expression patterns. The article highlights the specific contribution of TLRs to the immune response in fish and identifies gaps in research in this area.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Materials Science, Multidisciplinary
Dalia I. Saleh, Mehrez E. El-Naggar, Ola A. Abu Ali, M. A. Abu-Saied, M. K. Ahmed, E. Abdel-Fattah, Manal F. Abou Taleb, Salem R. Salem
Summary: The sequence of co-doped HAP/PCL nanofibrous composites with different amounts of zinc has been prepared and tested. The introduction of zinc affects the grain size, fiber size, surface roughness, cell viability, and antibacterial ability of the materials in a positive way.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Energy & Fuels
Rania H. Taha, Tarek H. Taha, M. A. Abu-Saied, A. E. Mansy, Mervat A. Elsherif
Summary: In this research, cardboard waste was utilized for the production of bioethanol using physical, chemical, and enzymatic treatments to enhance glucose production. The results showed that acid treatment and hot plating increased glucose concentration, and cellulase enzyme treatment further improved the concentration. The yeast isolate T1 successfully produced high concentration of bioethanol from glucose produced through cardboard waste hydrolysis. Additionally, the poly(AN-co-MA) membrane modified with EDA showed good performance in the purification of bioethanol with high flux.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Energy & Fuels
Tarek H. Taha, M. A. Abu-Saied, Mohamed Elnouby, Mohamed Hashem, Saad Alamri, E. A. El Desouky, Kareem Morsy
Summary: In this study, biodegradable membranes made of chitosan-blended starch were prepared and characterized using various analytical techniques. The results showed that the biodegradability of the membranes was influenced by the ratio of starch. After enzymatic treatment, the surface roughness and water uptake of the membranes increased, while the water contact angle decreased. These findings suggest that chitosan-blended starch membranes have the potential to serve as alternatives to petroleum plastics with improved environmental safety.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Materials Science, Textiles
Mehrez E. El-Naggar, Ola A. Abu Ali, Dalia Saleh, K. M. Abu-alnja, Abd-allah M. Mnsour, Mohammed A. Abu-Saied, Tawfik A. Khattab
Summary: This study presents a simple one-step method for coating electrically conductive cotton-nickel blend fabric with flame-retardant and water-repellent characteristics. The results show that the strong binding of silicone rubber (RTV) with both ammonium polyphosphate (APP) and cotton fibers enhances the flame-retardant action of cotton. Additionally, the coated fabric exhibits improved hydrophobicity and comfort properties.
FIBERS AND POLYMERS
(2022)
Article
Biochemistry & Molecular Biology
Tawfik A. Khattab, Mehrez E. El-Naggar, Mehboobali Pannipara, S. Wageh, Manal F. Abou Taleb, M. A. Abu-Saied, Ibrahim El-Tantawy El Sayed
Summary: In this study, an environmentally-friendly metallochromic solid state sensor was developed using cyanidin-based anthocyanin as a spectroscopic probe and chitosan nanoparticles integrated onto cellulose paper strip as a host matrix for real-time determination of ferric ions. The sensor showed high selectivity, fast response, low cost, and environmental safety.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Chemistry, Applied
Mehrez E. El-Naggar, Sami Ullah, S. Wageh, M. A. Abu-Saied, Tawfik A. Khattab, Dalal Alhashmialameer, Manal Abou Taleb, E. A. Matter
Summary: A translucent wooden substrate with long-lasting phosphorescence, high photostability, durability, tough surface, ultraviolet protection, high optical transmittance, and superhydrophobicity was developed by immobilizing lignin-modified wood with a solution of epoxy resin and rare-earth doped aluminate phosphor nanoparticles. The nanoparticles were synthesized in a nanoscale particle size and characterized by TEM and XRD. The wooden substrates with different ratios of nanoparticles were investigated by SEM, XRF analysis, FT-IR, elemental mapping, and EDXA.
JOURNAL OF RARE EARTHS
(2023)
Article
Materials Science, Multidisciplinary
M. Afifi, Mehrez E. El-Naggar, Shabbir Muhammad, Noweir Ahmad Alghamdi, S. Wageh, M. A. Abu-Saied, M. A. El-Morsy, Waheed M. Salem, Mervat S. Mostafa, Salem R. Salem
Summary: Biocompatible scaffolds based on chitosan encapsulated with hydroxyapatite have been developed for orthopedic applications. The addition of magnesium and strontium dopants into the scaffold resulted in improved crystal growth and morphology. Furthermore, the scaffolds exhibited enhanced compressive strength, cell viability, and reduced corrosion behavior.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Paper & Wood
Tawfik A. Khattab, Mehrez E. El-Naggar, Abdullah G. Al-Sehemi, Mehboobali Pannipara, M. A. Abu-Saied, Manal F. Abou Taleb
Summary: A novel photochromic emissive nanofibrous film has been developed for anticounterfeiting applications. The film is produced using the low-cost and high-yield solution blowing spinning method and incorporates cellulose nanowhiskers for enhanced efficiency. The photochromic nanofiber-coated sheets demonstrate strong reversibility and can be considered as an efficient strategy for manufacturing authenticated merchandise.
Article
Energy & Fuels
Sara E. AbdElhafez, Tarek Taha, Ahmed E. Mansy, Eman El-Desouky, Mohamed A. Abu-Saied, Khloud Eltaher, Ali Hamdy, Gomaa El Fawal, Amr Gamal, Aly M. Hashim, Abdallah S. Elgharbawy, Mona M. Abd El-Latif, Hesham Hamad, Rehab M. Ali
Summary: This study proposes a facile and green approach for bioethanol production with high concentration and purity from corn stover. The optimized pretreatment process achieves significant lignin and hemicellulose removal, high cellulose recovery, and glucose yield. The isolated yeast strain successfully produces bioethanol, and the integrated pervaporation technique increases bioethanol concentration. The techno-economic analysis demonstrates the profitability of the process, making it a promising approach for industrial bioethanol production.
Article
Polymer Science
Ahmed F. Elerian, M. A. Abu-Saied, G. H. Abd-Elnaim, Elsayed M. Elnaggar
Summary: The film-forming and structural properties of Polyvinyl chloride (PVC) were studied, and it was found that incorporating Graphene oxide (GO) and zirconium phosphate (ZrP) into PVC can develop functionalized polyelectrolyte membranes (PEMs) for direct methanol fuel cells (DMFCs). The structural and physical properties of PVC/GO-ZrP membranes were investigated using various techniques, and the results showed that these membranes have sufficient characteristics for application in DMFCs.
JOURNAL OF POLYMER RESEARCH
(2023)
Article
Energy & Fuels
A. E. Mansy, E. A. El Desouky, Ahmed K. K. Saleh, M. A. Abu-Saied, Tarek H. H. Taha, Waleed K. K. El-Zawawy, Yasser R. R. Abdel-Fattah
Summary: In this study, bioethanol was separated and purified from the culture broth using a newly developed BC/AMPS composite membrane. The membrane was characterized using various techniques and its performance in bioethanol separation was evaluated using an Amicon cell pervaporation system. The results showed that the BC/AMPS membrane was more efficient than the neat BC membrane, with a higher separation factor and flux. These findings suggest the promising application of the BC/AMPS membrane in bioethanol separation for bioenergy production.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Biotechnology & Applied Microbiology
Ahmed E. Mansy, Eman El-Desouky, Hamada El-Gendi, Mohamed A. Abu-Saied, Tarek H. Taha, Ranya A. Amer
Summary: The study focused on converting industrial waste, specifically cellulosic fiber waste, into bioethanol as an alternative energy source. Various treatments, including physical, chemical, and enzymatic hydrolysis, were used to maximize glucose concentration for fermentation into bioethanol. The results showed that the combination of treatments led to a glucose production of 13.9 mg/mL, while instrumental characterization confirmed the effectiveness of the waste fiber treatment. A yeast strain, Starmerella bacillaris STDF-G4, was identified and used to ferment glucose into bioethanol under optimized conditions, resulting in a production of 3.16 mg/mL. Scaling up the optimized conditions in a fermentation bioreactor further increased bioethanol production to 8.6 mg/mL.
FERMENTATION-BASEL
(2023)
Article
Green & Sustainable Science & Technology
Eman A. El Desouky, Emad A. Soliman, Hessa H. Al-Rasheed, Ayman El-Faham, M. A. Abu-Saied
Summary: Novel proton exchange membranes (PEMs) based on a composite of sulfonated polyacrylonitrile (SPAN), sulfonated polyglycidyl methacrylate (SPGMA), or sulfonated poly(acrylonitrile-co-glycidyl methacrylate) (SP(AN-co-GMA))/polyvinyl chloride (PVC) were developed for direct methanol fuel cells (DMFCs). The study found that the composite membranes based on sulfonated copolymers had higher thermal stability and ion exchange capacity than the composites based on sulfonated homopolymers.
Article
Materials Science, Characterization & Testing
Mahmoud Moustafa, M. A. Abu-Saied, Tarek H. Taha, Mohamed Elnouby, E. A. El Desouky, Saad Alamri, Sulaiman Alrumman, Ali Shati, Mohmed Al-Khatani, Huda Alghamdii, Rahmah Al-Qthanin, Ahmed Al-Emam
Summary: This research focuses on extracting starch polymer from potato peels waste and using it as a blending material in diapers to increase their water capacity. The results show that the addition of starch to the polymer blend significantly improves the water-holding capacity, making it suitable for diapers applications.
POLYMERS & POLYMER COMPOSITES
(2022)
