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A Bacterium Belonging to the Burkholderia cepacia Complex Associated with Pleurotus ostreatus
Yara Ricardo,Maccheroni Junior Walter,Horii Jorge,Azevedo Joao Lucio The Microbiological Society of Korea 2006 The journal of microbiology Vol.44 No.3
Pleurotus ostreatus is a widely cultivated white-rot fungus. Owing to its considerable enzymatic versatility p. ostreatus has become the focus of increasing attention for its possible utility in biobleaching and bioremediation applications. Interactions between microorganisms can be an important factor in those processes. In this study, we describe the presence of a bacterial species associated with P. ostreatus strain G2. This bacterial species grew slowly (approximately 30 days) in the liquid and semi-solid media tested. When p. ostreatus was inoculated in solid media containing Tween 80 or Tween 20, bacterial microcolonies were detected proximal to the fungal colonies, and the relevant bacterium was identified via the analysis of a partial 16S rDNA sequence; it was determined to belong to the Burkholderia cepacia complex, but was not closely related to other fungus-isolated Burkholderiaceae. New specific primers were designed, and confirmed the presence of in vitro P. ostreatus cultures. This is the first time that a bacterial species belonging to the B. cepacia complex has been found associated with P. ostreatus.
Yara Dadalti Fragoso 한국역학회 2018 Epidemiology and Health Vol.40 No.-
OBJECTIVES: John Cunningham virus (JCV) is a polyoma virus that infects humans, mainly in childhood or adolescence, andpresents no symptomatic manifestations. JCV can cause progressive multifocal leukoencephalopathy (PML) in immunosuppressedindividuals, including those undergoing treatment for multiple sclerosis (MS) and neuromyelitis optica (NMO). PMLis a severe and potentially fatal disease of the brain. The prevalence of JCV antibodies in human serum has been reported to bebetween 50.0 and 90.0%. The aim of the present study was to review worldwide data on populations of patients with MS andNMO in order to establish the rates of JCV seropositivity in these individuals. METHODS: The present review followed the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses)guidelines and used the following search terms: “JCV” OR “JC virus” AND “multiple sclerosis” OR “MS” OR “NMO” OR “neuromyelitisoptica” AND “prevalence.” These terms were searched for both in smaller and in larger clusters of words. The databasessearched included PubMed, MEDLINE, SciELO, LILACS, Google Scholar, and Embase. RESULTS: After the initial selection, 18 papers were included in the review. These articles reported the prevalence of JCV antibodiesin the serum of patients with MS or NMO living in 26 countries. The systematic review identified data on 29,319 patientswith MS/NMO and found that 57.1% of them (16,730 individuals) were seropositive for the anti-JCV antibody (range, 40.0 to69.0%). CONCLUSIONS: The median worldwide prevalence of JCV among adults with MS or NMO was found to be 57.1%.
ON HOM-LIE TRIPLE SYSTEMS AND INVOLUTIONS OF HOM-LIE ALGEBRAS
Yara, Hamdiatou,Zoungrana, Patricia L. The Kangwon-Kyungki Mathematical Society 2022 한국수학논문집 Vol.30 No.2
In this paper we mainly establish a relationship between involutions of multiplicative Hom-Lie algebras and Hom-Lie triple systems. We show that the -1-eigenspace of any involution on any multiplicative Hom-Lie algebra becomes a Hom-Lie triple system and we construct some examples of Hom-Lie triple systems using some involutions of some classical Hom-Lie algebras.
A Bacterium Belonging to the Burkholderia cepacia Complex Associated with Pleurotus ostreatus
Ricardo Yara,Walter Maccheroni Jr,Jorge Horii,Joao Lucio Azevedo 한국미생물학회 2006 The journal of microbiology Vol.44 No.3
Pleurotus ostreatus is a widely cultivated white-rot fungus. Owing to its considerable enzymatic versatility P. ostreatus has become the focus of increasing attention for its possible utility in biobleaching and bioremediation applications. Interactions between microorganisms can be an important factor in those processes. In this study, we describe the presence of a bacterial species associated with P. ostreatus strain G2. This bacterial species grew slowly (approximately 30 days) in the liquid and semi-solid media tested. When P. ostreatus was inoculated in solid media containing Tween 80 or Tween 20, bacterial microcolonies were detected proximal to the fungal colonies, and the relevant bacterium was identified via the analysis of a partial 16S rDNA sequence; it was determined to belong to the Burkholderia cepacia complex, but was not closely related to other fungus-isolated Burkholderiaceae. New specific primers were designed, and confirmed the presence of in vitro P. ostreatus cultures. This is the first time that a bacterial species belonging to the B. cepacia complex has been found associated with P. ostreatus.
Optical reconstruction of transparent objects with phase-only SLMs.
Stoykova, Elena,Yara?, Fahri,Yontem, Ali ?zg?r,Kang, Hoonjong,Onural, Levent,Hamel, Philippe,Delacr?taz, Yves,Bergo?nd, Isabelle,Arfire, Cristian,Depeursinge, Christian Optical Society of America 2013 Optics express Vol.21 No.23
<P>Three approaches for visualization of transparent micro-objects from holographic data using phase-only SLMs are described. The objects are silicon micro-lenses captured in the near infrared by means of digital holographic microscopy and a simulated weakly refracting 3D object with size in the micrometer range. In the first method, profilometric/tomographic data are retrieved from captured holograms and converted into a 3D point cloud which allows for computer generation of multi-view phase holograms using Rayleigh-Sommerfeld formulation. In the second method, the microlens is computationally placed in front of a textured object to simulate the image of the textured data as seen through the lens. In the third method, direct optical reconstruction of the micrometer object through a digital lens by modifying the phase with the Gerchberg-Saxton algorithm is achieved.</P>
Sustainable mold biomachining for the manufacturing of microfluidic devices
Arrate Santaolalla,Yara Alvarez-Braña,Astrid Barona,Lourdes Basabe-Desmonts,Fernando Benito-Lopez,Naiara Rojo 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.120 No.-
Biomachining has been investigated as a sustainable and effective alternative to conventional prototypingtechniques for molding polymeric materials for their subsequent use as microfluidic devices. A noveland simple process based on the combination of a Pressure Sensitive Adhesive mask and a varnish hasbeen proposed for preparing metal workpieces as an alternative to photolithography, with the latterbeing the most widely used technique for protecting workpieces. As far as the bioprocess is concerned,it has been applied in successive mold-etching and oxidant bio-regeneration stages. Metal solubilizationhas proven to be repeatable in several consecutive mold-etching stages when using the regenerated oxidantsolution. As a result, the lifespan of the biomachining medium has been prolonged, contributing toprocess sustainability. An equation with two restrictions has been proposed to predict the time requiredto obtain a mold with a fixed height, as metal solubilization evolves differently between the first and subsequenthours. Finally, the bio-engraved copper pieces have acted as effective molds in the fabrication ofself-powered polydimethylsiloxane microfluidic devices. This new biomachining application is thereforean effective and ecofriendly process for producing microfluidic devices.
Zayet, Mohamed Khalifa,Helaly, Yara Rabee,Eiid, Salma Belal Korean Academy of Oral and Maxillofacial Radiology 2014 Imaging Science in Dentistry Vol.44 No.3
Purpose: This study aimed to investigate the effect of changing the kilovoltage peak (kVp) on the radiographic assessment of dental caries. Materials and Methods: Seventy-five extracted posterior teeth with proximal caries or apparently sound proximal surfaces were radiographed with conventional E-speed films and a photostimulable phosphor system using 60 kVp and 70 kVp for the caries assessment. The images were evaluated by three oral radiologists and compared with the results of the stereomicroscope analysis. Results: No statistically significant difference was found between 60 kVp and 70 kVp for the caries detection, determination of caries extension into dentin, and caries severity in either the conventional or the digital images. Good to very good inter-observer and intra-observer agreements were found for both kilovoltage values on the conventional and digital images. Conclusion: Changing the kilovoltage between 60 kVp and 70 kVp had no obvious effect on the detection of proximal caries or determination of its extension or severity.