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Journal articles on the topic 'BFRA'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Zhang, Yongshu, Marvin Whiteley, Jens Kreth, et al. "The two-component system BfrAB regulates expression of ABC transporters in Streptococcus gordonii and Streptococcus sanguinis." Microbiology 155, no. 1 (2009): 165–73. http://dx.doi.org/10.1099/mic.0.023168-0.

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The putative two-component system BfrAB is involved in Streptococcus gordonii biofilm development. Here, we provide evidence that BfrAB regulates the expression of bfrCD and bfrEFG, which encode two ATP-binding cassette (ABC) transporters, and bfrH, which encodes a CAAX amino-terminal protease family protein. BfrC and BfrE are ATP-binding proteins, and BfrD, BfrF and BfrG are homologous membrane-spanning polypeptides. Similarly, BfrABss, the BfrAB homologous system in Streptococcus sanguinis, controls the expression of two bfrCD-homologous operons (bfrCD ss and bfrXY ss), a bfrH-homologous gen

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McMath, Lisa M., Heidi Contreras, Cedric P. Owens, and Celia W. Goulding. "The structural characterization of bacterioferritin, BfrA, from Mycobacterium tuberculosis." Journal of Porphyrins and Phthalocyanines 17, no. 03 (2013): 229–39. http://dx.doi.org/10.1142/s1088424613500211.

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Tuberculosis is a deadly disease caused by Mycobacterium tuberculosis. Like most bacterial pathogens, iron acquisition, regulation, and storage are critical for its survival. Due to the poor solubility of iron under physiological conditions, both eukaryotes and prokaryotes possess ferritins, large protein complexes that store iron and keep it bioavailable. Mtb encodes for two ferritin homologs: a heme-containing bacterioferritin (Mtb-BfrA) and a non-heme eukaryotic-like ferritin (Mtb-BfrB). A conserved feature of bacterioferritins is the presence of a heme group at the interface between two su

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Ma, Ju-Fang, Urs A. Ochsner, Martin G. Klotz, et al. "Bacterioferritin A Modulates Catalase A (KatA) Activity and Resistance to Hydrogen Peroxide in Pseudomonas aeruginosa." Journal of Bacteriology 181, no. 12 (1999): 3730–42. http://dx.doi.org/10.1128/jb.181.12.3730-3742.1999.

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ABSTRACT We have cloned a 3.6-kb genomic DNA fragment from Pseudomonas aeruginosa harboring the rpoA, rplQ,katA, and bfrA genes. These loci are predicted to encode, respectively, (i) the α subunit of RNA polymerase; (ii) the L17 ribosomal protein; (iii) the major catalase, KatA; and (iv) one of two iron storage proteins called bacterioferritin A (BfrA; cytochrome b 1 or b 557). Our goal was to determine the contributions of KatA and BfrA to the resistance of P. aeruginosa to hydrogen peroxide (H2O2). When provided on a multicopy plasmid, the P. aeruginosa katA gene complemented a catalase-defi

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Brickman, Timothy J., Ryan J. Suhadolc, and Sandra K. Armstrong. "Interspecies Variations in Bordetella Catecholamine Receptor Gene Regulation and Function." Infection and Immunity 83, no. 12 (2015): 4639–52. http://dx.doi.org/10.1128/iai.00787-15.

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Bordetella bronchisepticacan use catecholamines to obtain iron from transferrin and lactoferrin via uptake pathways involving the BfrA, BfrD, and BfrE outer membrane receptor proteins, and althoughBordetella pertussishas thebfrDandbfrEgenes, the role of these genes in iron uptake has not been demonstrated. In this study, thebfrDandbfrEgenes ofB. pertussiswere shown to be functional inB. bronchiseptica, but neitherB. bronchiseptica bfrDnorbfrEimparted catecholamine utilization toB. pertussis. Gene fusion analyses found that expression ofB. bronchiseptica bfrAwas increased during iron starvation

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Basulto-Moctezuma, Regina, Jorayma Reyes-Mendez, Daniela Villegas-Moncayo та ін. "Diseño de un plásmido capaz de expresar la β-fructosidasa (invertasa) en una biofábrica de origen bacteriano". Alianzas y Tendencias BUAP 7, № 26 (2022): 1–25. https://doi.org/10.5281/zenodo.6423631.

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<strong>RESUMEN</strong> La tecnología del ADN recombinante ha permitido desarrollar la capacidad de clonar y expresar en un hospedero un gen ajeno a él, con la finalidad de aumentar la producción de proteínas recombinantes a un menor costo. En los últimos años, las aplicaciones de las enzimas tipo invertasas han sido exploradas en el sector farmacéutico, alimentario e incluso, agropecuario, debido a su capacidad de catalizar la hidrólisis de sacarosa para la síntesis de oligosacáridos. En la presente investigación se

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Silva, Paula Monique Carvalho, Sandra Catia Pereira Uchôa, José Beethoven Figueiredo Barbosa, Victorio Jacob Bastos, José Maria Arcanjo Alves, and Lusiane Chaves Farias. "Efeito do potássio e do calcário na qualidade de mudas de cedro doce (Bombacopsis quinata)." REVISTA AGRO@MBIENTE ON-LINE 7, no. 1 (2013): 63. http://dx.doi.org/10.18227/1982-8470ragro.v7i1.842.

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A nutrição adequada da plântula durante a fase de viveiro é determinante para reduzir o tempo de transplantio e pegamento no campo. O cedro doce, embora seja explorado comercialmente, carece de informações científicas acerca do seu processo produtivo, sobretudo na fase de viveiro. Objetivou-se, portanto, com esse estudo, avaliar dois níveis de correção da acidez do substrato com calcário dolomítico (PRNT 100%) e cinco doses de potássio na forma de KCl (0; 5; 10; 15 e 30 mg planta-1 de K2O), aplicadas em cobertura, por meio foliar, para mudas de cedro doce em estágio inicial de desenvolvimento,

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Gourley, Erin, and Megan Parsons. "Clinical Supervisors' and (Junior) Doctors' Experiences of Breastfeeding Risk Assessment, and Where We Go From Here." BJPsych Open 10, S1 (2024): S140—S141. http://dx.doi.org/10.1192/bjo.2024.373.

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AimsWith recruitment and retention of NHS doctors an increasingly topical issue, the facilitation of a supported Return To Work (RTW) following a period of leave is particularly important. That the support provided takes a holistic approach to the wellbeing of the individual and their family unit is necessary if it is to be of the greatest success, especially with regards to new parents. The World Health Organization recommends breastfeeding until 2 years of age but in the UK just 0.5% of parents are breastfeeding at 1 year and, perhaps more significantly, 90% of breastfeeding parents stop bef

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Zhang, Yongshu, Yu Lei, Ali Khammanivong, and Mark C. Herzberg. "Identification of a Novel Two-Component System in Streptococcus gordonii V288 Involved in Biofilm Formation." Infection and Immunity 72, no. 6 (2004): 3489–94. http://dx.doi.org/10.1128/iai.72.6.3489-3494.2004.

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ABSTRACT Streptococcus gordonii is a pioneer colonizer of the teeth, contributing to the initiation of the oral biofilm called dental plaque. To identify genes that may be important in biofilm formation, a plasmid integration library of S. gordonii V288 was used. After screening for in vitro biofilm formation on polystyrene, a putative biofilm-defective mutant was isolated. In this mutant, pAK36 was inserted into a locus encoding a novel two-component system (bfr [biofilm formation related]) with two cotranscribed genes that form an operon. bfrA encodes a putative response regulator, while bfr

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Janagama, Harish K., T. M. A. Senthilkumar, John P. Bannantine, et al. "Identification and functional characterization of the iron-dependent regulator (IdeR) of Mycobacterium avium subsp. paratuberculosis." Microbiology 155, no. 11 (2009): 3683–90. http://dx.doi.org/10.1099/mic.0.031948-0.

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Mycobacterium avium subspecies paratuberculosis (MAP), the causative agent of Johne's disease in cattle and sheep, has unique iron requirements in that it is mycobactin-dependent for cultivation in vitro. The iron-dependent regulator (IdeR) is a well-characterized global regulator responsible for maintaining iron homeostasis in Mycobacterium tuberculosis (MTB). We identified an orthologous segment in the MAP genome, MAP2827, with >93 % amino acid identity to MTB IdeR. Electrophoretic mobility shift assays and DNase protection assays confirmed that MAP2827 binds the 19 bp consensus motif (ir

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Gashua, Auwalu Garba, Zulkefly Sulaiman, Martini Mohammad Yusoff, Mohd Yusoff Abd Samad, Mohd Fauzi Ramlan, and Monsuru Adekunle Salisu. "Assessment of Fertilizer Quality in Horse Waste-Based Bokashi Fertilizer Formulations." Agronomy 12, no. 4 (2022): 937. http://dx.doi.org/10.3390/agronomy12040937.

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Agricultural waste is a type of solid waste that needs to be managed properly. Organic waste can be recycled to produce bokashi fertilizer, which can be used to improve soil health, increase crop production, and sanitize the environment. However, it may contain heavy metals that could be toxic to plants and can pollute the environment if not properly decomposed. This study was designed to evaluate the fertilizer quality of six different bokashi fertilizer ratios (bfrs) over seven- and thirty-day maturation periods. The raw materials used include horse bedding waste (HBW), cow dung (CD), and pa

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11

Vijay, Kumar. "SURVEY OF FAULT DETECTION ALGORITHM IN WSN." INTERNATIONAL JOURNAL OF RESEARCH- GRANTHAALAYAH 5, no. 5 (2017): 207–13. https://doi.org/10.5281/zenodo.583910.

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In recent years, applications of wireless sensor networks (WSNs) have been improved due to its vast potential to connect the physical world to the virtual world. Also, a progress in microelectronic fabrication technology reduces cost of developed portable wireless sensor nodes. Faults occurring to sensor nodes are familiar due to the sensor device itself and the harsh environment where the sensor nodes are deploy. WSNs is mainly affect by the crash of sensor nodes. Possibility of sensor node failure increases with increase number of sensors. Wireless sensor networks have been recognized, at an

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12

Pandey, Ruchi, and G. Marcela Rodriguez. "A Ferritin Mutant of Mycobacterium tuberculosis Is Highly Susceptible to Killing by Antibiotics and Is Unable To Establish a Chronic Infection in Mice." Infection and Immunity 80, no. 10 (2012): 3650–59. http://dx.doi.org/10.1128/iai.00229-12.

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ABSTRACTIron is an essential, elusive, and potentially toxic nutrient for most pathogens, includingMycobacterium tuberculosis. Due to the poor solubility of ferric iron under aerobic conditions, free iron is not found in the host.M. tuberculosisrequires specialized iron acquisition systems to replicate and cause disease. It also depends on a strict control of iron metabolism and intracellular iron levels to prevent iron-mediated toxicity. Under conditions of iron sufficiency,M. tuberculosisrepresses iron acquisition and induces iron storage, suggesting an important role for iron storage protei

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Chen, Shicheng, William F. Bleam та William J. Hickey. "Molecular Analysis of Two Bacterioferritin Genes, bfrα and bfrβ, in the Model Rhizobacterium Pseudomonas putida KT2440". Applied and Environmental Microbiology 76, № 16 (2010): 5335–43. http://dx.doi.org/10.1128/aem.00215-10.

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ABSTRACT The model rhizobacterium Pseudomonas putida KT2440 and other fluorescent pseudomonads possess two bacterioferritins, Bfrα and Bfrβ. However, the regulatory systems controlling the expression of these genes and the roles of these proteins in iron homeostasis are ill defined. Our studies show that both bfrα and bfrβ were monocistronic: promoter motifs and transcriptional start sites were identified, and Fur boxes and σS-dependent regulatory motifs were absent. The expressions of bfrα and bfrβ were enhanced by iron exposure and were maximal in cells rapidly growing in a high-iron environ

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14

Liu, Jun, Yanli Tian, Yuqiang Zhao, et al. "Ferric Uptake Regulator (FurA) is Required for Acidovorax citrulli Virulence on Watermelon." Phytopathology® 109, no. 12 (2019): 1997–2008. http://dx.doi.org/10.1094/phyto-05-19-0172-r.

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Acidovorax citrulli is the causal agent of bacterial fruit blotch, a serious threat to commercial watermelon and melon crop production worldwide. Ferric uptake regulator (Fur) is a global transcription factor that affects a number of virulence-related functions in phytopathogenic bacteria; however, the role of furA has not been determined for A. citrulli. Hence, we constructed an furA deletion mutant and a corresponding complement in the background of A. citrulli strain xlj12 to investigate the role of the gene in siderophore production, concentration of intracellular Fe2+, bacterial sensitivi

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15

Hong, Won-Kyu, and Choong-Seon Hong. "BFRA: bounded flooding routing algorithm for provisioning the globally optimal route in a hierarchical ATM network." Computer Communications 25, no. 10 (2002): 980–90. http://dx.doi.org/10.1016/s0140-3664(01)00436-4.

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Muda, Johanes B., Bambang Supriyadi, Muslikh Muslikh, and Suprapto Siswosukarto. "Tinjauan Perilaku Dinamik Balok T dengan Perkuatan CFRP Jenis Wrap (Studi Eksperimental, Balok Beton Bertulang)." Dinamika Teknik Sipil: Majalah Ilmiah Teknik Sipil 13, no. 2 (2020): 60–70. http://dx.doi.org/10.23917/dts.v13i2.13056.

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Penggunaan CFRP sebagai pilihan dalam revitalisasi komponen struktur saat ini sangat banyak digunakan dan di kembangkan. Penggunaan CFRP bertujuan untuk meningkatkan kapasitas lentur dan geser balok, namun pada penerapannya penambahan CFRP berpengaruh terhadap perubahan kekakuan dan pola keruntuhan balok tersebut. Perilaku dinamik dari komponen struktuktur dalam penelitian ini digambarkan oleh nilai frekuensi alami komponen struktur dalam pengujian lentur dan geser. Penelitian ini menggunakan enam buah benda uji yaitu tiga benda uji balok T dengan perkuatan CFRP wrap pengujian lentur (BC1, BFR

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Belaz, Sorya, Thibault Rattier, Pierre Lafite, et al. "Identification, biochemical characterization, and in-vivo expression of the intracellular invertase BfrA from the pathogenic parasite Leishmania major." Carbohydrate Research 415 (October 2015): 31–38. http://dx.doi.org/10.1016/j.carres.2015.07.001.

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18

Chen, Shicheng, William F. Bleam, and William J. Hickey. "Simultaneous Analysis of Bacterioferritin Gene Expression and Intracellular Iron Status in Pseudomonas putida KT2440 by Using a Rapid Dual Luciferase Reporter Assay." Applied and Environmental Microbiology 75, no. 3 (2008): 866–68. http://dx.doi.org/10.1128/aem.01823-08.

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ABSTRACT A dual luciferase reporter (DLR) system utilizing firefly and Renilla luciferases was developed and tested in a model rhizobacterium, Pseudomonas putida KT2440. The DLR was applied to simultaneously analyze expression of three putative bacterioferritin genes (bfrα, bfrβ, and bfr) and assess the cellular iron status of strain KT2440 by monitoring expression of the Fur-regulated fepA-fes promoter. The DLR proved to be reproducible and sensitive. Expression of bfrα (PP0482) and bfrβ (PP1082) was consistent with expectations for bacterioferritin and varied directly with the iron level. Ho

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Song, Kangjia, Yang Yu, Yutao Liu, and Jichong Zhao. "Flexural Performance Study of Basalt-Fiber-Reinforced Polymer Bar Basalt-Fiber-Reinforced Concrete Beams." Buildings 13, no. 10 (2023): 2583. http://dx.doi.org/10.3390/buildings13102583.

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The utilization of Fiber-Reinforced Polymer (FRP) rods to strengthen concrete beam structures can enhance their ultimate load-carrying capacity and mitigate steel reinforcement corrosion damage. However, a prominent issue with BFRP (Basalt FRP) rod reinforcement in flexural members is its lack of yielding behavior, which can lead to catastrophic brittle failure without any preventive measures. Therefore, this study aims to enhance the ductility of concrete by introducing a specific quantity of basalt fiber, thereby reducing the hazards associated with the brittle failure of this composite stru

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Gerrick, Elias R., Thibault Barbier, Michael R. Chase, et al. "Small RNA profiling in Mycobacterium tuberculosis identifies MrsI as necessary for an anticipatory iron sparing response." Proceedings of the National Academy of Sciences 115, no. 25 (2018): 6464–69. http://dx.doi.org/10.1073/pnas.1718003115.

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One key to the success of Mycobacterium tuberculosis as a pathogen is its ability to reside in the hostile environment of the human macrophage. Bacteria adapt to stress through a variety of mechanisms, including the use of small regulatory RNAs (sRNAs), which posttranscriptionally regulate bacterial gene expression. However, very little is currently known about mycobacterial sRNA-mediated riboregulation. To date, mycobacterial sRNA discovery has been performed primarily in log-phase growth, and no direct interaction between any mycobacterial sRNA and its targets has been validated. Here, we pe

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Su, Xin, Bilige Menghe, Heping Zhang, and Wenjun Liu. "In Vitro Evaluation of Intestinal Transport and High-Density Fermentation of Lactobacillus acidophilus." Metabolites 13, no. 10 (2023): 1077. http://dx.doi.org/10.3390/metabo13101077.

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Lactobacillus acidophilus strains have limiting factors such as low cell density and complex nutritional requirements in industrial production, which greatly restricts their industrial application. In this study, fermentation conditions for L. acidophilus were optimized and transcriptomic analysis used to understand growth mechanisms under high-density fermentation conditions. We found that L. acidophilus IMAU81186 has strong tolerance to gastrointestinal juice. In addition, its optimal culture conditions were 3% inoculum (v/v); culture temperature 37 °C; initial pH 6.5; and medium composition

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Krassowska, Julita, and Carolina Piña Ramírez. "Flexural Capacity of Concrete Beams with Basalt Fiber-Reinforced Polymer Bars and Stirrups." Materials 15, no. 22 (2022): 8270. http://dx.doi.org/10.3390/ma15228270.

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The flexural properties of six 120 × 300 × 4500 mm concrete beams reinforced with bars made from basalt fiber-reinforced polymer (BFRP) basalt fibers and concrete stirrups were investigated. The beams contained different concrete compositions (with or without basalt fibers). Steel and BFRP bars were used as longitudinal and shear reinforcement. As expected, all the beams failed by the crushing of the concrete in the top compression fibers because of using BFRP bars. Beams with BFRP bars should be designed to fail by concrete crushing because it is safer than a brittle failure of the bars. The

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Urbański, Marek Urbański, and Andrzej Łapko. "On assessment of cracking of concrete beams reinforced with BFRP bars." Budownictwo i Architektura 13, no. 3 (2014): 201–8. http://dx.doi.org/10.35784/bud-arch.1821.

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This paper presents a comparative analysis of experimental and theoretical crack widths of simply supported beams reinforced with BFRP rebar (Basalt Fiber Reinforced Polymers). The tested BFRC model beams have been made of concrete class C30/37 and of bottom flexural basalt bars 8 mm in diameter. The reference RC beams with traditional flexural steel reinforcement have been additionally made of the same diameter. Beam deflections, concrete crack widths and strength capacity of beams reinforced with BFRP bars as well as with traditional steel bars have been registered. It has been shown that cr

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Kychkin, Anatoly K., Anna A. Gavrilieva, Alina A. Vasilieva, Aisen A. Kychkin, Mikhail P. Lebedev, and Anastasia V. Sivtseva. "Assessment of Extremely Cold Subarctic Climate Environment Destruction of the Basalt Fiber Reinforced Epoxy (BFRE) Rebar Using Its Moisture Uptake Kinetics." Polymers 13, no. 24 (2021): 4325. http://dx.doi.org/10.3390/polym13244325.

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A quite simple method is proposed for the assessment of extremely cold subarctic climate environment destruction of the basalt fiber reinforced epoxy (BFRE) rebar. The method involves the comparison of experimentally obtained long-term moisture uptake kinetic curves of unexposed and exposed BFRP rebars. A moisture uptake test was carried out at the temperature of 60 °C and relative humidity of 98 ± 2% for 306 days. The plasticization can be neglected because of low-level moisture saturation (<0.41% wt.); the swelling and structural relaxation of the polymer network can be neglected due to t

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Abushanab, Abdelrahman, Wael Alnahhal, and Murad Farraj. "Experimental and finite element studies on the structural behavior of BFRC continuous beams reinforced with BFRP bars." Composite Structures 281 (February 2022): 114982. http://dx.doi.org/10.1016/j.compstruct.2021.114982.

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Du, Zhigang, Ning Li, Wuxiu Ding, et al. "Development of the Large-Tonnage Pressure-Type Prestressed Anchor Cable with BFRP for Geotechnical Engineering and Its Mechanical Properties." Geofluids 2022 (September 13, 2022): 1–13. http://dx.doi.org/10.1155/2022/7467842.

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Prestressed anchor cable is widely used in geotechnical engineering to control the displacement or landslide of an unstable slope. However, the traditional cable anchor is made of steel material, which is easy to get rust in a corrosive environment. Basalt fiber-reinforced plastics (BFRP) are a kind of emerging compound material, with a good performance of high strength, low weight, and anticorrosion. Herein, an innovative large-tonnage pressure-type prestressed anchor is made with BFRP. This large-tonnage BFRP anchor cable has seven bunch structures of the “BFRP-connector-strand.” In each bun

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Jiang, Shi Yong, Yong Ye, and Wei Fei. "Experiment on the Bonding Performance of BFRP Bars Reinforced Concrete." Applied Mechanics and Materials 174-177 (May 2012): 993–98. http://dx.doi.org/10.4028/www.scientific.net/amm.174-177.993.

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Through the pull-out test methods, the concrete strength、reinforcement diameter Basalt Fiber Reinforced Plastics Bars、the anchorage length、 stirrup rate and other factors on the bonding properties of the BFRP reinforced concrete is analyzed. The BFRP bars and reinforcing steel bars bonding properties is compared. BFRP reinforced concrete bond failure mode has two types .As the concrete strength increases, the bond strength of the BFRP reinforced concrete increased. With the increase BFRP bars diameter and shear lag relationship, the cohesive force of the BFRP reinforced concrete decrease accor

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Anderson, Mark T., and Sandra K. Armstrong. "The BfeR Regulator Mediates Enterobactin-Inducible Expression of Bordetella Enterobactin Utilization Genes." Journal of Bacteriology 186, no. 21 (2004): 7302–11. http://dx.doi.org/10.1128/jb.186.21.7302-7311.2004.

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ABSTRACT Utilization of the enterobactin siderophore by the respiratory pathogens Bordetella pertussis and Bordetella bronchiseptica is dependent on the BfeA outer membrane receptor. This study determined that production of BfeA was increased significantly in iron-starved bacteria upon supplementation of cultures with enterobactin. A 1.01-kb open reading frame, designated bfeR, encoding a predicted positive transcriptional regulator of the AraC family was identified upstream and divergently oriented from bfeA. In iron-depleted cultures containing enterobactin, a Bordetella bfeR mutant exhibite

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Anderson, Mark T., and Sandra K. Armstrong. "The Bordetella Bfe System: Growth and Transcriptional Response to Siderophores, Catechols, and Neuroendocrine Catecholamines." Journal of Bacteriology 188, no. 16 (2006): 5731–40. http://dx.doi.org/10.1128/jb.00495-06.

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ABSTRACT Ferric enterobactin utilization by Bordetella bronchiseptica and Bordetella pertussis requires the BfeA outer membrane receptor. Under iron-depleted growth conditions, transcription of bfeA is activated by the BfeR regulator by a mechanism requiring the siderophore enterobactin. In this study, enterobactin-inducible bfeA transcription was shown to be TonB independent. To determine whether other siderophores or nonsiderophore catechols could be utilized by the Bfe system, various compounds were tested for the abilities to promote the growth of iron-starved B. bronchiseptica and induce

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Shen, Tongyu. "A Correlation Study of Attachment and Body-Focused Repetitive Behavior in Non-treatment Seeking People." Lecture Notes in Education Psychology and Public Media 47, no. 1 (2024): 119–24. http://dx.doi.org/10.54254/2753-7048/47/20240894.

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The public's body focused repetitive behavior (BFRB) is getting worse and it is important to address the problem. The main basis of this article is that one source of BFRB is negative emotions, and the development of insecure attachment patterns is also associated with negative emotions. This paper also builds on recent studies showing that BFRB is negatively associated with attachment in children with autism. This paper studies the relationship between attachment and BFRB in non-treatment seeking people. The study as a whole is to explore the correlation. Bgs-8 scale for BFRB, IPPA-R scale fo

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Zhang, Shao Yi, and Wei Shan. "Prospect Analysis of the Application of BFRP Bar to Bridges." Key Engineering Materials 574 (September 2013): 21–29. http://dx.doi.org/10.4028/www.scientific.net/kem.574.21.

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Basalt Fiber Reinforced Polymer (BFRP) bar was deemed as a substitute material of steel bar owing to its strong tensile properties and corrosion resistance which is benefit to enhance the durability of reinforced concrete bridges. Based on the current research findings, the prospects of BFRP bar for the application to bridges were analyzed. It was concluded that BFRP bar had more widely application to bridges than steel bar owing to the advantages of BFRP bar in the mechanical performance of resisting the corrosion. Meanwhile, two key points of whether BFRP bar could be successfully applied to

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Li, Xiangyi. "Risk of Brominated Flame Retardants for Aquatic Organisms." Highlights in Science, Engineering and Technology 73 (November 29, 2023): 330–36. http://dx.doi.org/10.54097/hset.v73i.13009.

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Nowadays, many experiments have detected the residues of halogenated flame retardants in organisms and even human bodies, among which the amount and type of brominated flame retardants (BFRs) are the most. Therefore, research on biological toxicity and possible harms of BFRs need to be studied to adjust the use and disposal of these chemicals to prevent irreversible consequences on the human body. This article mainly introduced the harm of BFRs to aquatic organisms and the solutions to reduce the concentration of BFRs in water. The harm of BFRs to aquatic organisms is mainly reflected in repro

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Lv, Qing Fang, Ji Hong Qin, and Ran Zhu. "Study on the Flexural Behavior of BFRP-Plate Strengthened Beams." Applied Mechanics and Materials 501-504 (January 2014): 1007–13. http://dx.doi.org/10.4028/www.scientific.net/amm.501-504.1007.

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Flexural behavior of BFRP composite bamboo beams is tested with taking the size effect and number of BFRP-plate layers into consideration. The results illustrate that the BFRP-plates enhance the stiffness and ductility of bamboo beam, proving that BFRP plates undertake a portion of tension in the tensile region. With layers of BFRP plates increasing, the enhancing effects more significant. However, strengthening effects decline with the aspect ratio of bamboo beam.

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Dong, Jin Qiu. "Mechanical Properties of Basalt Fiber Reinforced Concrete at Low Cycle Impact." Applied Mechanics and Materials 174-177 (May 2012): 1524–27. http://dx.doi.org/10.4028/www.scientific.net/amm.174-177.1524.

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The mechanical properties and toughening mechanism of basalt fiber reinforced concrete (BFRC) with different fibers proportion ranging from 0 to 2.5 kg/m3 were tested in the experiment. The results show that the basalt fiber has little effect on the compressive strength of BFRC, but it can improve the impact toughness of BFRC significantly. Taking impact toughness as criterion, BFRC with 0.36% basalt fiber would be the best choice. The energy absorption characteristic of BFRC with different fibers dosages increases by 1.4~3.1 times than that of plain concrete when it is ultimately destroyed. B

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Ding, Bin, Li Jun Ouyang, Zhou Dao Lu, and Wei Zhen Chen. "Seismic Performance of RC Short Columns Strengthened with BFRP." Applied Mechanics and Materials 351-352 (August 2013): 1532–36. http://dx.doi.org/10.4028/www.scientific.net/amm.351-352.1532.

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BFRP has excellent strength, durability, thermal properties and economic cost. To test seismic performance of short columns strengthened with BFRP. Low cyclic loading test was conducted on one comparative short column and two RC short columns strengthened with BFRP. The test shows that short columns warped by BFRP show excellent failure modes, shear capacity, ductility and energy dissipation. As a new fiber reinforced plastic, BFRP has a good prospect in the area of seismic strengthening for its low cost and comprehensive mechanical properties.

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Huo, Bao Rong, and Xiang Dong Zhang. "Experiment Study of BFRP Bars’ Mechanical Properties." Applied Mechanics and Materials 174-177 (May 2012): 830–33. http://dx.doi.org/10.4028/www.scientific.net/amm.174-177.830.

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The testing rule of mechanical properties of material can be established and the mechanical performance can be found by studying the basic mechanical properties of BFRP bars. Using the opressive sleeve anchor developed by the researchers,tensile tests of BFRP bars are carried out according to the national standards of “GFRP bar tensile test methods”.The BFRP bar’s force-deformation curve is linear before the force-deformation relationship is destroyed,therefore,referring to steel wire or steel cable,the BFRP bar’s reliable strength is suggested to be approximately 80% of its ultimate tensile s

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Xie, Jianhe, Jianglin Li, Zhongyu Lu, and Huan Zhang. "Experimental Study on Fatigue Behaviour of BFRP-Concrete Bond Interfaces under Bending Load." Shock and Vibration 2018 (2018): 1–11. http://dx.doi.org/10.1155/2018/7497061.

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Basalt fiber reinforced polymer (BFRP) composites are increasingly being used to retrofit concrete structures by external bonding. For such strengthened members, the BFRP-concrete interface plays the crucial role of transferring stresses. This study aims to investigate the fatigue behaviour of the interface under bending load. A series of tests were conducted on BFRP-concrete bonded joint, including static, fatigue, and postfatigue loading. The fatigue failure modes, the development of deflection, the evolution of BFRP strains, and the propagation of interfacial cracks were analysed. In additi

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daSilva, Wilmar, Halyka Vasconcelos, Karina Scaramuzzi, et al. "Generation of the Recombinant M. smegmatis and M. bovis (BCG) Vaccine with genes of Enteropathogenic E. coli bfpA and intimin. Dias da Silva, W, 1, 3, Vasconcellos, H.L.F. 1,2,3 ; Scaramuzzi, K.1,3; Rodriguez, D.2 ; Nascimento, I.P.2; 1 Laboratório de Imunoquímica, Instituto Butantan São Paulo, SP, Brazi. 2 Laboratório de Biotecnologia, Instituto Butantan São Paulo, SP, Brazil. 3 Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, SP, Brazil. (166.15)." Journal of Immunology 188, no. 1_Supplement (2012): 166.15. http://dx.doi.org/10.4049/jimmunol.188.supp.166.15.

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Abstract Escherichia coli (EPEC) is important cause of diarrhea in children. EPEC adhere the intestinal epithelium causing the attaching and effacing (A/E) lesions. Recombinant M. smegmatis (MS) and BCG were constructed to express bfpA or intimin. Briefly, the whole bfpA gene and the intimin portion were amplified by PCR primers from genomic DNA (EPEC), and inserted into pMIP12 at the BamH I/KpnI sites. The vectors pMIP_bfpA and pMIP _intim were introduced separately into MS and BCG. Recombinants clones were selected based on resistance to kanamycin and named rSmeg_pMIP_(bfpA or intimin) and r

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Ipavec, Matej. "The effects of Low-Load BFRE training on self-reported knee function and pain intensity in individuals with knee impairment." Annales Kinesiologiae 15, no. 2 (2025): 171–93. https://doi.org/10.35469/ak.2024.473.

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Purpose: The aim of this study was to investigate the influence of low-load (LL) blood flow restriction exercise (BFRE) on orthopedic patients with knee joint injuries, focusing on the subjective assessment of knee joint function and the perception of pain in the knee joint. Methods: The participants were divided into an LL-BFRE group and a sham LL-BFRE group (SLL-BFRE). The training program to strengthen the quadriceps femoris muscle was carried out for four weeks with three training sessions per week. The LL-BFRE group trained with blood flow obstruction through the active muscles using an i

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Long, Yue Ling, and Jiang Zhu. "Experimental Study on Concrete Columns with Various Sizes Confined by BFRP and Hybrid FRP under Axial Compression." Advanced Materials Research 838-841 (November 2013): 407–11. http://dx.doi.org/10.4028/www.scientific.net/amr.838-841.407.

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Fourteen concrete columns with various sizes confined by BFRP and hybrid FRP and six plain concrete columns as the control specimens were axially loaded to failure in order to investigate both confining effects and size effects in concrete columns confined by BFRP and hybrid FRP. Experimental results show that BFRP and hybrid FRP can increase considerably both the capacity and ductility of the concrete specimens. Furthermore, the peak stress of the unconfined concrete decreases with the size of the specimens increasing. Similarly, the peak stress of BFRP confined concrete decreases with the si

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Liu, Jianxun, Ning Li, Meirong Chen, Jianping Yang, Biao Long, and Zhishen Wu. "Durability of basalt fiber-reinforced polymer bars in wet-dry cycles alkali-salt corrosion." Science and Engineering of Composite Materials 26, no. 1 (2019): 43–52. http://dx.doi.org/10.1515/secm-2018-0030.

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AbstractBasalt fiber-reinforced polymer (BFRP) bars have been increasingly applied to offshore structures, which are subjected to seawater corrosion and wet-dry cycles during their service time. This study evaluated the alkali-salt resistance performance of BFRP bars with different resin matrix types under wet-dry cycles. The tensile and shear strength of BFRP bars were tested. As a comparison, experiments of BFRP bars under continuous immersion were also conducted. The mechanisms of the two different conditions were analyzed by scanning electron microscopy (SEM). A relationship was establishe

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Lv, Qingfang, and Ye Liu. "Experimental study on the mechanical behavior of BFRP-bamboo composite beam." Advanced Composites Letters 28 (January 1, 2019): 096369351986733. http://dx.doi.org/10.1177/0963693519867335.

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This article proposes a basalt fiber-reinforced plastic–bamboo (BFRP-bamboo) composite beam consisting of BFRP sheet and laminated bamboo, aiming at fully utilizing advantages of bamboo and BFRP to improve the mechanical behavior of the laminated bamboo beam. A two-step test program is involved: (1) double shear test for bonding behavior between the BFRP and laminated bamboo and (2) loading test for mechanical behaviors of both laminated bamboo and BFRP-bamboo composite beams. Parameters affecting the bonding behavior are firstly concluded as the coated surface resin, types of bonding material

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Wang, Yongwei, Zhen Zhou, Yang Wei, and Dongping Zhu. "Experimental Investigation of BFRP Tendons under Monotonic and Hysteretic Loadings." Polymers 13, no. 21 (2021): 3722. http://dx.doi.org/10.3390/polym13213722.

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Basalt fiber reinforced polymers (BFRPs) have been widely used in structures because of their high strength and light weight advantages. The previous research neglected the effect of the bonded anchor which led to overestimated performances of the BFRP tendons. In this study, experiments on the monotonic and hysteretic behaviors were conducted to analyze the mechanics of the BFRP tendons with bonded anchors. After considering the influences of the loading rates and initial prestressed displacements, the anchor colloidal deformations of the BFRP systems were measured and regressed. The results

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Yang, Yongmin, Zhaoheng Li, Tongsheng Zhang, Jiangxiong Wei, and Qijun Yu. "Bond-Slip Behavior of Basalt Fiber Reinforced Polymer Bar in Concrete Subjected to Simulated Marine Environment: Effects of BFRP Bar Size, Corrosion Age, and Concrete Strength." International Journal of Polymer Science 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/5156189.

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Basalt Fiber Reinforced Polymer (BFRP) bars have bright potential application in concrete structures subjected to marine environment due to their superior corrosion resistance. Available literatures mainly focused on the mechanical properties of BFRP concrete structures, while the bond-slip behavior of BFRP bars, which is a key factor influencing the safety and service life of ocean concrete structures, has not been clarified yet. In this paper, effects of BFRP bars size, corrosion age, and concrete strength on the bond-slip behavior of BFRP bars in concrete cured in artificial seawater were i

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Yang, Yaqiang, Zixian Zhou, Yanlin Guan, et al. "Nonlinear Coupled Vibration Behavior of BFRP Cables on Long-Span Cable-Stayed Bridges under Parametric Excitation." Buildings 13, no. 12 (2023): 3082. http://dx.doi.org/10.3390/buildings13123082.

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Based on the cable-stayed beam model, this paper studies the nonlinear coupled vibration behavior of basalt fiber-reinforced polymer (BFRP) cables on long-span cable-stayed bridges under parametric excitation. Considering the sag, damping of BFRP cables, and the coupled interactions between stayed cables and the main girder, the nonlinear coupling vibration model of the BFRP cable–beam composite structure has been established. Taking the longest cable of Sutong Bridge as a case study, the nonlinear coupled vibration behavior of BFRP cables under parametric excitation has been numerically analy

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Lee, Dohyeon, Minje Ji, and Sewon Lee. "Blood Flow Restriction Exercise for Successful Aging." Exercise Science 32, no. 2 (2023): 154–67. http://dx.doi.org/10.15857/ksep.2023.00227.

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PURPOSE: Generally, an increase in life expectancy is accompanied by various geriatric diseases. However, there is a possibility that geriatric diseases can be prevented and improved through exercise. Exercise is recommended for older adults, but high-intensity exercise (HIE) increases the risk of potential injury. Therefore, blood flow restriction exercise (BFRE) is attracting attention as an alternative for older people who cannot perform HIE. However, mechanisms underlying the physiological effects and benefits of BFRE in older adults have not yet been fully elucidated. This study aimed to

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Yin, Yushi, Min Zhang, and Guan-hua Zhang. "Influence of BFRP Mesh on UHPC Wet Bonding Performance." Advances in Materials Science and Engineering 2023 (January 14, 2023): 1–12. http://dx.doi.org/10.1155/2023/7011235.

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As an effective method of strengthening concrete in the marine environment, wet bonding has maintained an efficient application mode for many years. At present, research on the wet bonding behavior of UHPC is very rare, so in order to investigate the interfacial bonding performance between basalt fiber-reinforced plastic (BFRP) mesh cloth and ultra-high performance concrete (UHPC) under wet bonding conditions, forty-eight BFRP-UHPC specimens were carried out to investigate the influence of dry/wet bonding type, mesh depth, and mesh thickness on the interfacial bonding performance between BFRP

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Guleria, Mohini, Tapas Das, Chandan Kumar, et al. "Effect of Number of Bifunctional Chelating Agents on the Pharmacokinetics and Immunoreactivity of 177Lu-labeled Rituximab: A Systemic Study." Anti-Cancer Agents in Medicinal Chemistry 18, no. 1 (2018): 146–53. http://dx.doi.org/10.2174/1871520617666170725164530.

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Objective: Monoclonal antibodies (mAbs) have been radiolabeled with a variety of radioisotopes utilizing various kinds of bi-functional chelating agents (BFCAs) with an aim to develop suitable agents for radioimmunotherapy. The number of BFCA moieties present per antibody molecule plays a significant role in determining the pharmacokinetics and immunoreactivity exhibited by the radiolabeled antibodies. The objective of the present study is to evaluate the effect of the number of BFCA moieties present per antibody molecule on the pharmacokinetics and immunoreactivity of the 177Lu-labeled Rituxi

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Huo, Bao Rong, Guang Ning Yang, and Xiang Dong Zhang. "Research on the Flexural Behavior of BFRP Concrete Beams." Advanced Materials Research 598 (November 2012): 351–55. http://dx.doi.org/10.4028/www.scientific.net/amr.598.351.

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In order to prolong the useful time of the building structure, as well as increase the ability of resisting kinds of architectural diseases, BFRP is used to replace steel, and finished the research tests of BFRP reinforced concrete simply supported beams with different reinforcement ratios. According to the test results and theoretical analysis, we put forward: The BFRP bar is one kind of brittle material without obvious yielding point, but the BFRP reinforcement concrete beam has bigger deformation before the beam collapses. The deflection produced can be approximately viewed as two straight

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Smith, Dr Nathan, Dr Olivier Girard, Associate Professor Brendan Scott, and Professor Jeremiah Peiffer. "PRESCRIBING BLOOD FLOW-RESTRICTED CYCLING USING RPE BALANCES THE PHYSIOLOGICAL AND PERCEPTUAL DEMANDS IN HEALTHY ADULTS." Journal of Clinical Exercise Physiology 13, s2 (2024): 341. http://dx.doi.org/10.31189/2165-7629-13-s2.341.

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INTRODUCTION Aerobic exercise is commonly prescribed using fixed heart rates or power/speed. These methods may not be suitable when incorporating blood flow restriction (BFR), as this technique can influence these measurements. Prescribing exercise via perception of exertion (RPE), which reflects overall psychophysiological stress, may present an alternative to overcome these issues. Aim: Describe physiological and perceptual responses during fixed-power and fixed-RPE cycling performed with blood flow restriction (BFR_{PWR} and BFR_{RPE}) and without (CON_{PWR} and CON_{RPE}). METHODS Followin

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