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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.
Star/galaxy separation at faint magnitudes: application to a simulated Dark Energy Survey
Soumagnac, M. T.,Abdalla, F. B.,Lahav, O.,Kirk, D.,Sevilla, I.,Bertin, E.,Rowe, B. T. P.,Annis, J.,Busha, M. T.,Da Costa, L. N.,Frieman, J. A.,Gaztanaga, E.,Jarvis, M.,Lin, H.,Percival, W. J.,Santiago Oxford University Press 2015 MONTHLY NOTICES- ROYAL ASTRONOMICAL SOCIETY Vol.450 No.1
An Overview of Biopulping Research: Discovery and Engineering
Scott, Gary M.,Akhtar, Masood,Lentz, Michael J.,Horn, Eric,Swaney, Ross E.,Kirk, T.Kent Korea Technical Association of the Pulp and Paper 1998 펄프.종이기술 Vol.30 No.4
Biopulping is defined as the treatment of wood chips with lignin-degrading fungi prior to pulping. Fungal pretreatment prior to mechanical pulping reduces electrical energy requirements during refining or increases mill throughput, improves paper strength, reduces the pitch content, and reduces the environmental impact of pulping. Our recent work involved scaling up the biopulping process towards the industrial level, investigating both the engineering and economic feasibility. We envision the process to be done in either a chip-pile or silo-based system for which several factors need to be considered: the degree of decontamination, a hospitable environment for the fungus, and the overall process economics. Currently, treatment of the chips with low-pressure steam is sufficient for decontamination and a simple, forced ventilation system maintains the proper temperature, humidity, and moisture conditions, thus promoting uniform growth of the fungus. The pilot-scale trial resulted in the successful treatment of 4 tons of wood chips (dry weight basis) with results comparable to those on a laboratory. Larger, 40-ton trials were also successful, with energy savings and paper properties comparable with the laboratory scale. The overall economics of the process also look very favorable and can result in significant annual savings to the mill. Although the current research has focused on biopulping for mechanical pulping, it is also beneficial for sulfite chemical pulping and some applications to recycled fiber have been investigated.
AKARI, SCUBA2 AND HERSCHEL DATA OF PRE-STELLAR CORES
D. Ward-Thompson,K. Pattle,J. M. Kirk,P. Andre,J. Di Francesco 한국천문학회 2017 天文學論叢 Vol.32 No.1
We show Akari data, Herschel data and data from the SCUBA2 cameraon JCMT, of molecular clouds. We focus on pre-stellar cores within the clouds. We present Akari data of the L1147-1157 ring in Cepheus and show how thedata indicate that the cores are being externally heated. We present SCUBA2and Herschel data of the Ophiuchus region and show how the environment isalso affecting core evolution in this region. We discuss the effects of the magnetic field in the Lupus I region, andhow this lends support to a model for the formation and evolution of coresin filamentary molecular clouds.
Effects of hydrated lime on radionuclides stabilization of Hanford tank residual waste
Wang, Guohui,Um, Wooyong,Cantrell, Kirk J.,Snyder, Michelle M.V.,Bowden, Mark E.,Triplett, Mark B.,Buck, Edgar C. Elsevier 2017 CHEMOSPHERE - Vol.185 No.-
<P><B>Abstract</B></P> <P>Chemical stabilization of tank residual waste is part of a Hanford Site tank closure strategy to reduce overall risk levels to human health and the environment. In this study, a set of column leaching experiments using tank C-104 residual waste were conducted to evaluate the leachability of uranium (U) and technetium (Tc) where grout and hydrated lime were applied as chemical stabilizing agents. The experiments were designed to simulate future scenarios where meteoric water infiltrates through the vadose zones into the interior of the tank filled with layers of grout or hydrated lime, and then contacts the residual waste. Effluent concentrations of U and Tc were monitored and compared among three different packing columns (waste only, waste + grout, and waste + grout + hydrated lime). Geochemical modeling of the effluent compositions was conducted to determine saturation indices of uranium solid phases that could control the solubility of uranium. The results indicate that addition of hydrated lime strongly stabilized the uranium through transforming uranium to a highly insoluble calcium uranate (CaUO<SUB>4</SUB>) or similar phase, whereas no significant stabilization effect of grout or hydrated lime was observed on Tc leachability. The result implies that hydrated lime could be a great candidate for stabilizing Hanford tank residual wastes where uranium is one of the main concerns.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Hanford tank residual waste could be stabilized by grout. </LI> <LI> Addition of hydrated lime stabilized uranium from leaching through CaUO<SUB>4</SUB>. </LI> <LI> XRD, SEM/EDS and thermodynamic model revealed uranium mineral transformation. </LI> </UL> </P>
Irradiation-induced disordering and amorphization of Al<sub>3</sub>Ti-based intermetallic compounds
Park, Jeong-Yong,Kim, Il-Hyun,Motta, Arthur T.,Ulmer, Christopher J.,Kirk Jr., Marquis A.,Ryan Jr., Edward A.,Baldo Jr., Peter M. Elsevier 2015 JOURNAL OF NUCLEAR MATERIALS Vol.467 No.2
<P><B>Abstract</B></P> <P>An in situ ion-irradiation study, simultaneously examined using transmission electron microscopy, was performed to investigate irradiation-induced disordering and amorphization of Al<SUB>3</SUB>Ti-based intermetallic compounds. Thin foil samples of two crystalline structures: D0<SUB>22</SUB>-structured Al<SUB>3</SUB>Ti and L1<SUB>2</SUB>-structured (Al,Cr)<SUB>3</SUB>Ti were irradiated using 1.0 MeV Kr ions at a temperature range from 40 K to 573 K to doses up to 4.06 × 10<SUP>15</SUP> ions/cm<SUP>2</SUP>. The results showed that both the compounds underwent an order-disorder transformation under irradiation, where both Al<SUB>3</SUB>Ti and (Al,Cr)<SUB>3</SUB>Ti ordered structures were fully transformed to the disordered face-centered cubic (FCC) structure except at the highest irradiation temperature of 573 K. A slightly higher irradiation dose was required for order-disorder transformation in case of Al<SUB>3</SUB>Ti as compared to (Al,Cr)<SUB>3</SUB>Ti at a given temperature. However, their amorphization resistances were different: while the disordered FCC (Al,Cr)<SUB>3</SUB>Ti amorphized at the irradiation dose of 6.25 × 10<SUP>14</SUP> ions/cm<SUP>2</SUP> (0.92 dpa) at 40 K and 100 K, the Al<SUB>3</SUB>Ti compound with the same disordered FCC structure maintained crystallinity up to 4.06 × 10<SUP>15</SUP> ions/cm<SUP>2</SUP> (5.62 dpa) at 40 K. The critical temperature for amorphization of (Al,Cr)<SUB>3</SUB>Ti under Kr ion irradiation is likely between 100 K and room temperature and the critical temperature for disordering between room temperature and 573 K.</P>
Ivy Amor F. Lambio,Marnelli S. Alviola,Cristian C. Lucañas,Aimee Lynn A. Barrion-Dupo,Camille Faith D. Duran,Ma. Francia Kyla M. Cammayo,Kirk J. Taray,Orlando L. Eusebio,Ireneo L. Lit Jr. 국립중앙과학관 2024 Journal of Asia-Pacific Biodiversity Vol.17 No.1
A new record of a holoparasitic plant is hereby reported to thrive in the twilight zone of Dry Cave I,Tayabas, Quezon Province, Philippines. This is the first record of a Balanophora species thriving withincave ecosystems. Based on the observed production of white sap from the roots inside the cave and apreliminary survey of trees above the cave, the probable host of the Balanophora abbreviata is Ficus sp. (Moraceae). Fig trees are capable of producing deeply penetrating and lithophytic roots. Based on theexistence of various arthropods in and within the vicinity of the plant clumps, the possible role ofB. abbreviata as part of the food web within Dry Cave I is also discussed.