1,721,319 research outputs found
GALACTO-OLIGOSACCHARIDE PRODUCTION BY BETA-GALACTOSIDASE IN HYDROPHOBIC ORGANIC MEDIA
No full textProduction of galacto-oligosaccharide (GO), including trisaccharide and tetrasaccharide, was performed using a beta-galactosidase in water-hydrophobic solvent mixtures. A maximum GO concentration of 45% (w/w) was attained in a 95% cyclohexane / 5% water mixture from a 55% (w/w) of lactose at 60 degrees C and pH 6.0, while a maximum of 38% GO in aqueous media. GO production decreased with an increase in surfactant concentration. The optimum water content for GO production showed a broad range from 2.5 to 10% (v/v). Solvent properties, such as log P and the dipole moment, had no relation to GO production
Damage Visualization of Aircraft Rotating Blade Structures using the Ultrasonic Propagation Imaging Technique
No full textIntegrated SHM for aircraft wing and fuselage with built-in and mobile UPI systems in Smart Hangar
No full textOn extracting the wire curves from multiple face models for facial animation
No full textWire curve (SIGGRAPH 98 Conference Proceedings, 1998, p. 299) is a simple, intuitive interface to local deformation of complex geometric objects such as human face models. In this paper, we provide a formulation to extract wire curves and deformation parameters from a facial model based on the displacements of its vertices from those of the corresponding reference model. This extraction process is an inverse process of the wire deformation. With a mild assumption and interactive guide for setting the reference curves and their attributes, we show that the inverse process can be nicely formulated as an over-constrained system of linear equations that can be solved with a least-squares minimization technique. We apply the extraction process to multiple face models with different types of expressions to obtain their corresponding wire curves. For facial animation, we blend those extracted wire curves and deformation parameters to finally deform the reference face model. Our proposed scheme facilitates both local deformation and non-uniform blending by making use of the power of wire deformation. (C) 2004 Elsevier Ltd. All rights reserved
Long distance laser ultrasonic propagation imaging system with damage visualization techniques
No full textUnderstanding the pathogenicity of Naegleria fowleri in association with N. fowleri antigen-1 (Nfa1)
Full text linkNaegleria fowleri, a brain-eating amoeba, thrives in lakes and rivers with aquatic vegetation and causes primary amoebic meningoencephalitis (PAM) in humans. Most recently, it has become such a serious problem that N. fowleri was detected in tap water in Houston, USA. Several pathogenic factors are considered very important to destroy target cells in the brain. In particular, the food-cup where N. fowleri antigen-1 (Nfa1) is located, is strongly expressed in pseudopodia involved in the movement of N. fowleri, and is involved in phagocytosis by attaching to target cells. In this article, we reviewed the role of the Nfa1 protein and its associated pathogenicity. The nfa1 gene was cloned by cDNA library immunoscreening using infection serum and immune serum. Nfa1 protein is mainly distributed in pseudopodia important to movement and vacuoles. Moreover, heat shock protein 70, cathepsin-like proteare and Nf-actin are also associated with pseudopodia in which Nfa1 is localized. Interestingly, the amount of the nfa1 gene changed as N. fowleri trophozoites transformed into cysts. Polyclonal antiserum against Nfa1 showed a protective effect against cytotoxicity of approximately 19.7%. Nfa1-specific IgA antibodies prevent N. fowleri trophozoites from adhering to the nasal mucosa, delaying invasion. The nfa1-vaccinated mice showed significantly higher levels of Nfa1-specific antibody. The duration of anti-Nfa1 IgG in the vaccinated mice lasted 12 weeks, strongly suggesting that nfa1 is a significant pathogenic gene and that Nfa1 is a pathogenic protein. Several factors related to pseudopodia and locomotion have been linked to Nfa1. A clearer function of N. fowleri targeting nfa1 with other genes might enable target-based inhibition of N. fowleri pathogenicity
Defect visualization of aircraft UHF antenna radome using full-field pulse-echo ultrasonic propagation imaging system
No full textASO Author Reflections: Prediction of Survival Outcomes Based on Preoperative Clinical Parameters in Gastric Cancer
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