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Utilization of carrageenan and chitosan as coating material in phycocyanin encapsulation

IOP Conference Series: Materials science and engineering 2019年第1期633卷

作者： Hadiyanto H Sutanto M Suzery N P Adetya A M Nilamsari A Yunanda Department of Chemical Engineering Faculty of Engineering Diponegoro University Jl. Prof Soedarto SH Tembalang Semarang Central Java Indonesia Master Program of Environmental Science School of Postgraduate Studies Diponegoro University Jl. Imam Bardjo No 3-5 Semarang Central Java Indonesia Physic Department Faculty of Science and Mathematic Diponegoro University. Jl. Prof. Soedarto SH-Tembalang Semarang Departement of Chemistry Diponegoro University Jl. Prof.Soedharto SH Tembalang Semarang

Phycocyanin is one of the pigments found in Spirulina platensis. Phycocyanin has potential as natural blue dye and antioxidant. The application of phycocyanin as food ingredient is still limited due to its vulnerability to environment. Microencapsulation can keep phycocyanin from environmental influences such as temperature, light and pH. This research aimed to determine the antioxidant activity of phycocyanin microencapsulation with carrageenan and chitosan coating material caused by the effect of thermal degradation overtime and its influence on the physical characteristics of the microencapsulation. The highest antioxidant activity of 61.48% was found in chitosan coating material that occurred at temperature of 40° with 30 minutes heat *** microcapsule with chitosan has more vibrant blue color compared to *** microencapsulation either by using carrageenan or chitosan have functional groups such as alkane, alcohol, ether and ester.

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Radiological characteristics of charged particle interactions in the first clay-nanoparticle dichromate gel dosimeter

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Journal of Physics: Conference Series 2013年第1期444卷

作者： M L Taylor T Maeyama N Fukunishi K L Ishikawa K Fukasaku T Furuta S Takagi S Noda R Himeno S Fukuda RMIT University/School of Applied Sciences Melbourne Australia Peter MacCallum Cancer Centre/Physical Sciences Melbourne Australia RIKEN/Nishina Centre for Accelerator-Based Science Wako Japan RIKEN/Computational Science Research Program Wako Japan The University of Tokyo/Department of Nuclear Engineering and Management Graduate School of Engineering Tokyo Japan The University of Tokyo/Photon Science Centre Graduate School of Engineering Tokyo Japan Himon'ya Hospital Department of Neurosurgery Tokyo Japan RIKEN/Advanced Centre for Computing and Communication Wako Japan The University of Tokyo/Department of Mechanical Engineering Graduate School of Engineering Tokyo Japan National Institute of Radiological Sciences / Research Centre for Charged Particle Therapy Chiba Japan

The incorporation of clay nanoparticles into gel dosimeters shows promise for significant diffusion reduction – but to what extent does the presence of the nano-clay influence charged particle interactions and, in particular, what is the impact on water equivalence? In this work, we quantify the radiological characteristics of electron, proton and carbon ion interactions in the RIKEN dichromate nanoclay gel and specifically evaluate the water equivalence over a broad energy range. Results indicate that the radiological properties are sufficiently representative of tissues that this low-diffusion gel could readily be used for validation of complex dose distributions. Electron and proton ranges are within 1 % of those in water. Mean effective atomic numbers for electron interactions in the range 10 keV – 10 GeV are within 1 % of those of water which, coupled with the similar mass density, ultimately means the overall impact on dose distributions is not great. The range of C6+ ions in the nanoclay gel is closer to that of water (< 4 %) than a common polymer gel dosimeter (< 7 %), though experimentally measured R1 values indicate an over-response at low doses.

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Performance Analysis of a Modified Conjugate Gradient Algorithm for Optimization Models

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IOP Conference Series: Materials science and engineering 2021年第1期1115卷

作者： S E Olowo I M Sulaiman M Mamat A E Owoyemi M A Zaini Kalfin S H Yuningsih Department of Mathematics Kano University of science and Technology Kano Nigeria Faculty of Informatics and Computing Universiti Sultan Zainal Abidin Campus Kuala Nerus 22200 Terengganu Malaysia Department of General Studies. Federal College of Agricultural Produce Technology Kano Nigeria Institute of Engineering Mathematics Universiti Malaysia Perlis Kangar Malaysia Doctor Program of Mathematics Faculty of Mathematics and Natural Sciences Universitas Padjadjaran Indonesia Master Program of Mathematics Faculty of Mathematics and Natural Sciences Universitas Padjadjaran Indonesia

The Conjugate gradient (CG) algorithms is very important and widely used in solving optimization models. This is due to its simplicity as well as global convergence properties. Various line search procedures as usually employ in the analysis of the CG methods. Recently, many studies have been done aimed at improving the CG method. In this paper, an alternative formula for conjugate gradient coefficient has been proposed which possesses the global convergence properties under exact minimization condition. The result of the numerical computation has shown that this new coefficient performs better than the existing CG methods.

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THE PATROL FRIGATE program‐A NEW APPROACH TO SHIP DIGIGN AND ACQUISTION

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Naval Engineers Journal 1973年第4期85卷 82-91页

作者： NEWCOMB, JOHN W. DITRAPANI, ANTHONY R. Mr. John W. Newcomb received his undergraduate education at Webb Institute of Naval Architecture graduating in 1966 and is currently completing requirements for a Master of Business Administration degree at the George Washington University. After gradwlting from Webb he was employed by Texaco Inc. Marine Department and later served three years active duty in the Navy as the DEG-7 Project Oficer at Supervisor of Shipbuilding Conversion and Repair Third Naval District. Subsequent thereto he was employed by the Naval Ship Research and Development Center prior to assuming his present position in the Ship System Design Division of the Naval Ship Engineering Center. He is a member of ASNE and SNAME. Mr. Anthony R. Di'hapani received his BS degree in Mechanical Engineering from the University of Wisconsin in 1958 and subsequently completed course requirements for a Master of Engineering Science while an evening student at the George Washington University. He began his engineering career in 1958 in the BuShips Steam Turbine and Gear Branch specializing in steam turbine systems for nuclear submarines. In 1962 after completing a Navy-sponsored Electronics Training Program he joined the SQS-26 Sonar Project and served as Head of the Special Projects Section and subsequently the Test and Analysis Section until selected in 1967 to head the ASW Branch for the newly-churtered DXIDXG Project now the DO963 Ship Acquisition Project in the Naval Ship System Command. In 1970 he was designated a8 Acting Director of the DD963 Technical Management Plans Division and when the PF Program emerged in 1971 was reassigned as Deputy Project Manager for the Patrol Frigate Project.

Late in 1970, Admiral E. R. Zumwdt, Chid of Naval Operations, directed that study begin towards development of a new class of ocean escort to be known BS Patrol Frigate (PF) to take over some of the duties of the Navy's World War II destroyers as these 25 year old ships are retired from the active Fleet. At the same time, the department of Defense, was significantly revising its basic policies for the development and acquisition of major weapons systems, and PF became the Nay's first major ship claw acquisition under these new policies. This new requirement, as atmound in DOD Directive 5000.1, along with the program constraints imposed by the CNO, required the development of a philosophy and approach towards design, test and evaluation and acquisition which was significantly Merent from ship procurements of the recent past. This paper disc the overall acquisition proms for the Patrol Frigate Class BS it is being developed and implemented to meet these needs and constraints, and provides a commepfary regarding the effectiveness of the appraach as of January 1973. © 1973 by the American Society of Naval Engineers

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Mitigating errors in mobile-based dietary assessments: Effects of a data modification process on the validity of an image-assisted food and nutrition app

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Nutrition 2023年 116卷 112212-112212页

作者： Ho, Dang Khanh Ngan Chiu, Wan-Chun Kao, Jing-Wen Tseng, Hsiang-Tung Yao, Chih-Yuan Su, Hsiu-Yueh Wei, Pin-Hui Le, Nguyen Quoc Khanh Nguyen, Hung Trong Chang, Jung-Su School of Nutrition and Health Sciences College of Nutrition Taipei Medical University Taipei Taiwan Department of Nutrition Wan Fang Hospital Taipei Medical University Taipei Taiwan Department of Computer Science and Information Engineering National Taiwan University of Science and Technology Taipei Taiwan Department of Dietetics Taipei Medical University Hospital Taipei Taiwan Professional Master Program in Artificial Intelligence in Medicine College of Medicine Taipei Medical University Taipei Taiwan Research Center for Artificial Intelligence in Medicine Taipei Medical University Taipei Taiwan Translational Imaging Research Center Taipei Medical University Hospital Taipei Taiwan Department of Adult Nutrition Counselling National Institute of Nutrition Hanoi Viet Nam Department of Clinical Nutrition and Dietetics National Hospital of Endocrinology Hanoi Viet Nam Graduate Institute of Metabolism and Obesity Sciences College of Nutrition Taipei Medical University Taipei Taiwan Nutrition Research Center Taipei Medical University Hospital Taipei Taiwan Chinese Taipei Society for the Study of Obesity (CTSSO) Taipei Taiwan TMU Research Center for Digestive Medicine Taipei Medical University Taipei Taiwan

Objective: Mobile nutrition applications (apps) provide a simple way for individuals to record their diet, but the validity and inherent errors need to be carefully evaluated. The aim of this study was to assess the validity and clarify the sources of measurement errors of image-assisted mobile nutrition apps. Methods: This was a cross-sectional study with 98 students recruited from School of Nutrition and Health sciences, Taipei Medical University. A 3-d nutrient intake record by Formosa Food and Nutrient Recording App (FoodApp) was compared with a 24-h dietary recall (24-HDR). A two-stage data modification process, manual data cleaning, and reanalyzing of prepackaged foods were employed to address inherent errors. Nutrient intake levels obtained by the two methods were compared with the recommended daily intake (DRI), Taiwan. Paired t test, Spearman's correlation coefficients, and Bland–Altman plots were used to assess agreement between the FoodApp and 24-HDR. Results: Manual data cleaning identified 166 food coding errors (12%;stage 1), and 426 food codes with missing micronutrients (32%) were reanalyzed (stage 2). Positive linear trends were observed for total energy and micronutrient intake (all P_trend < 0.05) after the two stages of data modification, but not for dietary fat, carbohydrates, or vitamin D. There were no statistical differences in mean energy and macronutrient intake between the FoodApp and 24-HDR, and this agreement was confirmed by Bland–Altman plots. Spearman's correlation analyses showed strong to moderate correlations (r = 0.834 ∼ 0.386) between the two methods. Participants’ nutrient intake tended to be lower than the DRI, but no differences in proportions of adequacy/inadequacy for DRI values were observed between the two methods. Conclusions: Mitigating errors significantly improved the accuracy of the Formosa FoodApp, indicating its validity and reliability as a self-reporting mobile-based dietary assessment tool. Dietitians a

关键词： Food records Mobile application Mobile health Smartphone application

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Ultra-Stable environment control for the neid spectrometer: Design and performance demonstration

arXiv

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arXiv 2019年

作者： Robertson, Paul Anderson, Tyler Stefansson, Gudmundur Hearty, Frederick R. Monsonb, Andrew Mahadevan, Suvrath Blakesle, Scott Bendere, Chad Ninan, Joe P. Conran, David Levi, Eric Lubar, Emily Cole, Amanda Dykhouse, Adam Kanodia, Shubham Nitroy, Colin Smolsky, Joseph Tuggle, Demetrius Blank, Basil Nelson, Matthew Blake, Cullen Halverson, Samuel Henderson, Chuck Kaplan, Kyle F. Li, Dan Logsdon, Sarah E. McElwain, Michael W. Rajagopal, Jayadev Ramsey, Lawrence W. Roy, Arpita Schwab, Christian Ryan, Terrien R. Wright, Jason T. University of California Department of Physics and Astronomy 4129 Frederick Reines Hall IrvineCA92697 United States Pennsylvania State University Department of Astronomy And Astrophysics University ParkPA United States NASA Earth and Space Science Pennsylvania State University Center for Exoplanets AND Habitable Worlds University ParkPA United States University of Arizona Department of Astronomy Steward Observatory TucsonAZ United States Pennsylvania State University College of Engineering University ParkPA United States Pennsylvania State University Department of Physics University ParkPA United States Massachusetts Institute of Technology Laboratory for Nuclear Science CambridgeMA United States Ohio State University Department of Astronomy ColumbusOH United States PulseRay Inc. Beaver DamsNY United States University of Virginia Department of Astronomy CharlottesvilleVA United States University of Pennsylvania Department of Physics and Astronomy PhiladelphiaPA United States NASA Sagan Massachusetts Institute of Technology Department of Physics CambridgeMA United States Cornell University IthacaNY United States National Optical Astronomy Observatory NASA Postdoctoral Program NASA Goddard Space Flight Center Exoplanets and Stellar Astrophysics Laboratory NASA Goddard Space Flight Center GreenbeltMD United States California Institute of Technology Department of Astronomy PasadenaCA United States Macquarie University Department of Physics And Astronomy Sydney Australia Carleton College Department of Physics AND Astronomy NorthfieldMN United States

Two key areas of emphasis in contemporary experimental exoplanet science are the detailed characterization of transiting terrestrial planets, and the search for Earth analog planets to be targeted by future imaging missions. Both of these pursuits are dependent on an order-of-magnitude improvement in the measurement of stellar radial velocities (RV), setting a requirement on single-measurement instrumental uncertainty of order 10 cm/s. Achieving such extraordinary precision on a high-resolution spectrometer requires thermo-mechanically stabilizing the instrument to unprecedented levels. Here, we describe the Environment Control System (ECS) of the NEID Spectrometer, which will be commissioned on the 3.5m WIYN Telescope at Kitt Peak National Observatory in 2019, and has a performance specification of on-sky RV precision Copyright © 2019, The Authors. All rights reserved.

关键词： Temperature control

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Executive Order 10988 And the Navy

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Naval Engineers Journal 1966年第2期78卷 267-274页

作者： Avallone, E.M. The Author graduated from the Naval Academy in 1952. Following graduation he served aboard the USS LENAWEE (APA-195) in the Pacific during the Korean war. His next four years were spent in submarines with duty in the Atlantic. He qualified for submarines while serving aboard the USS DOGFISH (SS-350) and qualified for command of submarines while serving aboard the USS SARDA (SS-488). Then he attended Massachusetts Institute of Technology for three years while studying Naval Construction and Engineering in the Nuclear Option. After receipt of a Professional Degree and a Master of Science degree he was designated an Engineering Duty Officer (EDO) and assigned to duty at the Philadelphia Naval Shipyard. While there he served in billets primarily concerned with the repair and conversion of submarines. After three years at Philadelphia he was ordered to duty at the U. S. Naval Academy as an instructor in the Engineering Department. He is presently teaching Fluid Mechanics and Thermodynamics. In January 1966 he received a Master of Arts degree from George Washington University in Personnel Management. The author has been a frquent contributor to both theNAVAL ENGINEERS JOURNALand the U.S. Naval Institute Proceedings.

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In-situ electric field control of THz non-reciprocal directional dichroism in the multiferroic Ba2CoGe2O7

arXiv

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arXiv 2021年

作者： Vít, J. Viirok, J. Peedu, L. Rõõm, T. Nagel, U. Kocsis, V. Tokunaga, Y. Taguchi, Y. Tokura, Y. Kézsmárki, I. Balla, P. Penc, K. Romhányi, J. Bordács, Sandor Department of Physics Budapest University of Technology and Economics Budapest1111 Hungary Institute of Physics Ascr Na Slovance 2 Prague 8182 21 Czech Republic Faculty of Nuclear Science and Physical Engineering Czech Technical University Břehová 7 Prague 1115 19 Czech Republic National Institute of Chemical Physics and Biophysics Akadeemia tee 23 Tallinn12618 Estonia Wako351-0198 Japan Department of Advanced Materials Science University of Tokyo Kashiwa277-8561 Japan Department of Applied Physics Tokyo College University of Tokyo Tokyo113-8656 Japan Experimental Physics v Center for Electronic Correlations and Magnetism University of Augsburg Augsburg86135 Germany Institute for Solid State Physics and Optics Wigner Research Centre or Physics PO Box. 49 BudapestH-1525 Hungary Department of Physics and Astronomy University of California Irvine 4129 Frederick Reines Hall IrvineCA United States Hungarian Academy of Sciences Premium Postdoctor Program Budapest1051 Hungary

Non-reciprocal directional dichroism, also called the optical-diode effect, is an appealing functional property inherent to the large class of non-centrosymmetric magnets. However, the in-situ electric control of this phenomenon is challenging as it requires a set of conditions to be fulfilled: Special symmetries of the magnetic ground state, spin-excitations with comparable magnetic- and electricdipole activity and switchable electric polarization. We demonstrate the isothermal electric switch between domains of Ba2CoGe2O7 possessing opposite magnetoelectric susceptibilities. Combining THz spectroscopy and multiboson spin-wave analysis, we show that unbalancing the population of antiferromagnetic domains generates the non-reciprocal light absorption of spin excitations. Copyright © 2021, The Authors. All rights reserved.

关键词： Electric fields

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THE SHIP CASE PROBLEM

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Naval Engineers Journal 1966年第3期78卷 523-528页

作者： AVALLONE, EUGENE M. The Author graduated from the Naval Academy in 1952. Following graduation he served aboard the USS LENAWEE (APA-195) in the Pacific during the Korean war. His next four years were spent in submarines with duty in the Atlantic. He qualified for submarines while serving aboard the USS DOGFISH (SS-350) and qualified for command of submarines while serving aboard the USS SARDA (SS-488). Then he attended Massachusetts Institute of Technology for three years while studying Naval Construction and Engineering in the Nuclear Option. After receipt of a Professional Degree and a Master of Science degree he was designated an Engineering Duty Officer (EDO) and assigned to duty at the Philadelphia Naval Shipyard. While there he served in billets primarily concerned with the repair and conversion of submarines. After three years at Philadelphia he was ordered to duty at the U. S. Naval Academy as an instructor in the Engineering Department. He is presently teaching Fluid Mechanics and Thermodynamics. In January 1966 he received a Master of Arts degree from George Washington University in Personnel Management. The author has been a frequent contributor to both the NavalEngineersJournaland the U.S. Naval Institute Proceedings.

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Concurrent operando neutron imaging and diffraction analysis revealing spatial lithiation phase evolution in an ultra-thick graphite electrode

arXiv

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arXiv 2024年

作者： Strobl, Markus Baur, Monica E. Samothraktis, Stavros Malamud, Florencia Zhang, Xiaolong Tung, Patrick K.M. Schmidt, Søren Woracek, R. Lee, J. Kiyanagi, Ryoji Kuhn, Luise Theil Segev, Inbal Gavish Ein-Eli, Yair PSI Center for Neutron and Muon Sciences Villigen5232 Switzerland Niels Bohr Institut University of Copenhagen Denmark Department of Energy Conversion and Storage Technical University of Denmark Kongens LyngbyDK-2800 Denmark Research Technology Services [ResTech UNSW Sydney Kensington2052 Australia DMSC European Spallation Source Lyngby Denmark European Spallation Source P.O. Box 176 LundS - 221 00 Sweden J-PARC Center Japan Atomic Energy Agency Tokai319-1195 Japan Soreq Nuclear Research Center [SNRC Yavne Israel Department of Material Science and Engineering Technion Israel Institute of Technology Haifa3200003 Israel Grand Technion Energy Program [GTEP Technion Haifa3200003 Israel Israel National Institute for Energy Storage [INIES Technion Haifa3200003 Israel

Energy efficient, safe and reliable Li-ion batteries (LIBs) are required for a wide range of applications. Charging capabilities of thick electrodes still holding their stored high-energy is a most desirable characteristic in future advanced LIBs. The introduction of ultra-thick graphite anode meets limitations in internal electrode transport properties, leading to Li-ion gradients with detrimental consequences for battery cell performance and lifetime. Yet, there is a lack of experimental tools capable of providing a complete view of local processes and evolving gradients within such thick electrodes. Here, we introduce a multi-modal operando measurement approach, enabling quantitative spatio-temporal observations of Li concentrations and intercalation phases in ultra-thick, graphite electrodes. Neutron imaging and diffraction concurrently provide correlated information from the macroscopic scale of the cell and electrode down to the crystallographic scale portraying the intercalation and deintercalation processes. In particular, the evolving formation of the solid electrolyte interphase (SEI), observation of gradients in total lithium content, as well as in the formation of ordered LixC6 phases and trapped lithium have been mapped throughout the first charge-discharge cycle of the cell. Different lithiation stages co-exist during charging and discharging of an ultra-thick composite graphite-based electrode;delayed lithiation and delithiation processes are observed at the central region of the electrode, while the SEI formation, potential plating and dead lithium are predominantly found closer to the interface with the separator. The study furthermore emphasizes the potential of the method to study Li ion diffusion and the kinetics of lithiation phase formation in advanced ultra-thick electrodes. Specifically, the relation of dead Li and SEI formation to the different Li phase stages can be mapped. Copyright © 2024, The Authors. All rights reserved.

关键词： Solid electrolytes

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