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Hopkins, Xiaoping,Gill, Waqas Amin,Kringel, Rosemarie,Wang, Guankui,Hass, Jamie,Acharya, Suresh,Park, Jungrae,Jeon, In Tak,An, Boo Hyun,Lee, Ji Sung,Ryu, Jong Eun,Hill, Rod,McIlroy, David,Kim, Young K IOP 2017 Nanotechnology Vol.28 No.3
<P>We present a novel method of radio frequency (RF)-mediated thermotherapy in tumors by remotely heating nickel (Ni)–gold (Au) core–shell nanowires (CSNWs). Ectopic pancreatic tumors were developed in nude mice to evaluate the thermotherapeutic effects on tumor progression. Tumor ablation was produced by RF-mediated thermotherapy via activation of the paramagnetic properties of the Ni–Au CSNWs. Histopathology demonstrated that heat generated by RF irradiation caused significant cellular death with pyknotic nuclei and nuclear fragmentation dispersed throughout the tumors. These preliminary results suggest that thermotherapy ablation induced via RF activation of nanowires provides a potential alternative therapy for cancer treatment.</P>
FIRE-2 simulations: physics versus numerics in galaxy formation
Hopkins, Philip F,Wetzel, Andrew,Kereš,, Duš,an,Faucher-Giguè,re, Claude-André,Quataert, Eliot,Boylan-Kolchin, Michael,Murray, Norman,Hayward, Christopher C,Garrison-Kimmel, Shea Oxford University Press 2018 MONTHLY NOTICES- ROYAL ASTRONOMICAL SOCIETY Vol.480 No.1
Hopkins, D.L.,Hayhurst, G.,Horcicka, J.V. Asian Australasian Association of Animal Productio 1992 Animal Bioscience Vol.5 No.1
A computer program called LAMPRO has been developed for use by the Australian meat industry to assist with the pricing of lamb carcasses. Based on a series of prediction equations and accounting for the cost structure of a meat processor the program allows the real value of a carcass to be established. The concept has also been extended to cater for mutton carcasses destined for either domestic or export markets incorporated in a program called MUTONPRO.
Hopkins, C.,Crispin, C.,Poblet-Puig, J.,Guigou-Carter, C. Applied Science Publishers [etc.] 2016 Applied acoustics Vol.113 No.-
Sound insulation prediction models in European and International Standards use the vibration reduction index to calculate flanking transmission across junctions of walls and floors. These standards contain empirical relationships between the ratio of mass per unit areas for the walls/floors that form the junction and a frequency-independent vibration reduction index. However, calculations using wave theory show that there is a stronger relationship between the ratio of characteristic moment impedances and the transmission loss from which the vibration reduction index can subsequently be calculated. In addition, the assumption of frequency-independent vibration reduction indices has been shown to be incorrect due to in-plane wave generation at the junction. Therefore numerical experiments with FEM, SFEM and wave theory have been used to develop new regression curves between these variables for the low-, mid- and high-frequency ranges. The junctions considered were L-, T- and X-junctions formed from heavyweight walls and floors. These new relationships have been implemented in the prediction models and they tend to improve the agreement between the measured and predicted airborne and impact sound insulation.
Katsuro-Hopkins, O.,Sabbagh, S.A.,Bialek, J.M.,Park, H.K.,Bak, J.G.,Chung, J.,Hahn, S.H.,Kim, J.Y.,Kwon, M.,Lee, S.G.,Yoon, S.W.,You, K.-I.,Glasser, A.H.,Lao, L.L. International Atomic Energy Agency 2010 Nuclear fusion Vol.50 No.2
<P>The Korea Superconducting Tokamak Advanced Research, KSTAR, is designed to operate a steady-state, high beta plasma while retaining global magnetohydrodynamic (MHD) stability to establish the scientific and technological basis of an economically attractive fusion reactor. An equilibrium model is established for stability analysis of KSTAR. Reconstructions were performed for the experimental start-up scenario and experimental first plasma operation using the EFIT code. The VALEN code was used to determine the vacuum vessel current distribution. Theoretical high beta equilibria spanning the expected operational range are computed for various profiles including generic L-mode and DIII-D experimental H-mode pressure profiles. Ideal MHD stability calculations of toroidal mode number of unity using the DCON code shows a factor of 2 improvement in the wall-stabilized plasma beta limit at moderate to low plasma internal inductance. The planned stabilization system in KSTAR comprises passive stabilizing plates and actively cooled in-vessel control coils (IVCCs) designed for non-axisymmetric field error correction and stabilization of slow timescale MHD modes including resistive wall modes (RWMs). VALEN analysis using standard proportional gain shows that active stabilization near the ideal wall limit can be reached with feedback using the midplane segment of the IVCC. The RMS power required for control using both white noise and noise taken from NSTX active stabilization experiments is computed for beta near the ideal wall limit. Advanced state-space control algorithms yield a factor of 2 power reduction assuming white noise while remaining robust with respect to variations in plasma beta.</P>
C. Hopkins,J. Yin,D. Wilson,X. Wang 한국소음진동공학회 2015 한국소음진동공학회 학술대회논문집 Vol.2015 No.10
Many engineering structures are regular in form, with repeating cellular units across which it is necessary to be able to predict bending and in-plane wave transmission. Such structures often exhibit features such as high propagation losses, tunneling and spatial filtering. Using validations against measurements and finite element modes, examples are shown for finite, periodic plate and beam structures demonstrating that prediction of wave transmission using Advanced Statistical Energy Analysis (ASEA) can be significantly more accurate than SEA as it is able to account for these features by incorporating ray tracing.