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Phillip A. Alviola,Marnelli S. Alviola,Kirk J. Taray,Cristian C. Lucañas,Anna Pauline O. de Guia,Aimee Lynn B. Dupo,Virginia C. Cuevas,Nelson M. Pampolina,Ireneo L. Lit Jr. 국립중앙과학관 2023 Journal of Asia-Pacific Biodiversity Vol.16 No.3
Food habits of eight insectivorous bat species from Puting Bato Cave Complex, Polillo Island, wereexamined. Fecal samples collected from eight species of cave-dwelling insectivorous bats containedculled fragments from seven prey taxa (six insect orders and one fish prey). Lepidoptera, Coleoptera, andHymenoptera were the most consumed group in both percentage volume and percentage frequency. Thediet of Hipposideros diadema, H. pygmaeus, Rhinolophus arcuatus, and R. philippinensis mostly concurswith previous studies but with varying proportions. Baseline information on the diets of H. coronatus,M. paululus, R. macrotis, and R. rufus is provided in this study.
Phillips, Brian M.,Takada, Shuta,Spencer, B.F. Jr.,Fujino, Yozo Techno-Press 2014 Smart Structures and Systems, An International Jou Vol.14 No.6
Real-time hybrid simulation (RTHS) has emerged as an important tool for testing large and complex structures with a focus on rate-dependent specimen behavior. Due to the real-time constraints, accurate dynamic control of servo-hydraulic actuators is required. These actuators are necessary to realize the desired displacements of the specimen, however they introduce unwanted dynamics into the RTHS loop. Model-based actuator control strategies are based on linearized models of the servo-hydraulic system, where the controller is taken as the model inverse to effectively cancel out the servo-hydraulic dynamics (i.e., model-based feedforward control). An accurate model of a servo-hydraulic system generally contains more poles than zeros, leading to an improper inverse (i.e., more zeros than poles). Rather than introduce additional poles to create a proper inverse controller, the higher order derivatives necessary for implementing the improper inverse can be calculated from available information. The backward-difference method is proposed as an alternative to discretize an improper continuous time model for use as a feedforward controller in RTHS. This method is flexible in that derivatives of any order can be explicitly calculated such that controllers can be developed for models of any order. Using model-based feedforward control with the backward-difference method, accurate actuator control and stable RTHS are demonstrated using a nine-story steel building model implemented with an MR damper.
Brian M. Phillips,Shuta Takada,Yozo Fujino,B.F. Spencer, Jr 국제구조공학회 2014 Smart Structures and Systems, An International Jou Vol.14 No.6
Real-time hybrid simulation (RTHS) has emerged as an important tool for testing large and complex structures with a focus on rate-dependent specimen behavior. Due to the real-time constraints, accurate dynamic control of servo-hydraulic actuators is required. These actuators are necessary to realize the desired displacements of the specimen, however they introduce unwanted dynamics into the RTHS loop. Model-based actuator control strategies are based on linearized models of the servo-hydraulic system, where the controller is taken as the model inverse to effectively cancel out the servo-hydraulic dynamics (i.e., model-based feedforward control). An accurate model of a servo-hydraulic system generally contains more poles than zeros, leading to an improper inverse (i.e., more zeros than poles). Rather than introduce additional poles to create a proper inverse controller, the higher order derivatives necessary for implementing the improper inverse can be calculated from available information. The backward-difference method is proposed as an alternative to discretize an improper continuous time model for use as a feedforward controller in RTHS. This method is flexible in that derivatives of any order can be explicitly calculated such that controllers can be developed for models of any order. Using model-based feedforward control with the backward-difference method, accurate actuator control and stable RTHS are demonstrated using a nine-story steel building model implemented with an MR damper.
Molecular dynamics simulation of a psychrophilic adenylate kinase
배의영,문소진,George N. Phillips, Jr 한국응용생명화학회 2015 Applied Biological Chemistry (Appl Biol Chem) Vol.58 No.2
Proteins from psychrophilic organisms can function at low temperatures and have shown potential for industrial applications. In the present study, thermal denaturation of a psychrophilic adenylate kinase (AKpsychro) from Bacillus globisporus was measured using circular dichroism spectroscopy and its molecular dynamics (MD) simulations were performed. The results fromthe unfolding experiment andMD simulations of AKpsychro were compared with those of its mesophilic and thermophilic homologues to study the relationship between dynamic motion and the cold adaptation of proteins.
Molecular dynamics simulation of a psychrophilic adenylate kinase
Bae, Euiyoung,Moon, Sojin,Phillips, George N. Jr. The Korean Society for Applied Biological Chemistr 2015 Applied Biological Chemistry (Appl Biol Chem) Vol.58 No.2
Proteins from psychrophilic organisms can function at low temperatures and have shown potential for industrial applications. In the present study, thermal denaturation of a psychrophilic adenylate kinase (AKpsychro) from Bacillus globisporus was measured using circular dichroism spectroscopy and its molecular dynamics (MD) simulations were performed. The results fromthe unfolding experiment andMD simulations of AKpsychro were compared with those of its mesophilic and thermophilic homologues to study the relationship between dynamic motion and the cold adaptation of proteins.
Diversity and threats to cave-dwelling bats in a small island in the southern Philippines
Ma. Niña Regina M. Quibod,Phillip A. Alviola,Anna Pauline O. de Guia,Virginia C. Cuevas,Ireneo L. Lit Jr.,Bonifacio O. Pasion 국립중앙과학관 2019 Journal of Asia-Pacific Biodiversity Vol.12 No.4
More than 2,000 caves have been documented in the Philippines, yet cave research is very limited. Thisstudy was conducted to provide benchmark information on the diversity and ecology of cave-dwellingbats from Samal Island, a small island in the southern Philippines. Bats were surveyed from thirtycaves of varying physical features and disturbances. Fifteen species of bats were identified in the island;14 of which are new records for the island, increasing the island distribution of the identified bats in thecountry. The abundance of cave-dwelling bats varied from low to high density, with some caves estimatedto harbor more than 10,000 individuals. Abundance and richness of cave-dwelling bats positivelyincreased with longer cave length, higher ceilings, bigger and multiple entrances, and presence of water. The Bat Cave Vulnerability Index (BCVI) revealed three high priority caves, 12 medium priority caves and15 low priority caves, indicating the importance of standardized method in assessing cave disturbance. Traces of tourism and hunting were the most common disturbance factors. The results of this studyhighlight the need for fundamental data on the distribution, diversity, and ecology of cave-dweling batsin the Philippines.
Crystal structure of tandem ACT domain‐containing protein ACTP from <i>Galdieria sulphuraria</i>
Bitto, Eduard,Kim, Do Jin,Bingman, Craig A.,Kim, Hyun‐,Jung,Han, Byung Woo,Phillips Jr., George N. Wiley Subscription Services, Inc., A Wiley Company 2012 Proteins Vol.80 No.8
<P><B>Abstract</B></P><P>The ACT domain is a structurally conserved small molecule binding domain which is mostly involved in amino acid and purine metabolism. Here, we report the crystal structure of a tandem ACT domain‐containing protein (ACTP) from <I>Galdieria sulphuraria</I>. The two ACTP monomers in the asymmetric unit form a dimer with a non‐crystallographic twofold axis in a domain‐swapped manner, showing a horseshoe‐like structure with a central crevice. This structure contributes to expand our knowledge on the structural diversity of ACT domain‐containing proteins. Proteins 2012; © 2012 Wiley Periodicals, Inc.</P>
Kim, Do Jin,Bitto, Eduard,Bingman, Craig A.,Kim, Hyun‐,Jung,Han, Byung Woo,Phillips Jr., George N. John Wiley and Sons Inc. 2015 Proteins Vol.83 No.7
<P><B>ABSTRACT</B></P><P>Members of the universal stress protein (USP) family are conserved in a phylogenetically diverse range of prokaryotes, fungi, protists, and plants and confer abilities to respond to a wide range of environmental stresses. <I>Arabidopsis thaliana</I> contains 44 USP domain‐containing proteins, and USP domain is found either in a small protein with unknown physiological function or in an N‐terminal portion of a multi‐domain protein, usually a protein kinase. Here, we report the first crystal structure of a eukaryotic USP‐like protein encoded from the gene At3g01520. The crystal structure of the protein At3g01520 was determined by the single‐wavelength anomalous dispersion method and refined to an <I>R</I> factor of 21.8% (<I>R</I><SUB>free</SUB> = 26.1%) at 2.5 Å resolution. The crystal structure includes three At3g01520 protein dimers with one AMP molecule bound to each protomer, comprising a Rossmann‐like α/β overall fold. The bound AMP and conservation of residues in the ATP‐binding loop suggest that the protein At3g01520 also belongs to the ATP‐binding USP subfamily members. Proteins 2015; 83:1368–1373. © 2015 The Authors. Proteins: Structure, Function, and Bioinformatics Published by Wiley Periodicals, Inc.</P>