cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.18462/iir.iccrt.2016.0020
title: Cryopreservation: methods, equipment and critical concerns.

description: The technique of cryopreservation aims to maintain the biological samples in a metabolic suspension state, by which all chemical, physical and biological changes are diminished. The biology principles behind cryopreservation are widely investigated in the literature. However, little scientific interest has been focused to the current equipment used as cryogenic storages and how they affect the viability and functionality of the cells during their preservation. This review paper attempts to bridge the gap between the biology and engineering aspects of cryopreservation. The basic principles of cryobiology, the cryoinjury mechanisms, the role of cryoprotective agents, the state of the art cryopreservation methods and equipment, and concerns regarding the use of liquid nitrogen as cryogenic refrigerant are covered. Further to our knowledge there is no complete review in the literature describing the connection between the current cryogenic equipment and the physical events taking place during cryopreservation. The paper aims to provide researchers with the key knowledge of cryopreservation, not only from a biological point of view, but from a technical aspect, too, in order to contribute to the development of the cryobiology field.
DOI: 10.18462/iir.iccrt.2016.0021
title: Effect of superconductivity on microscale radiative heat transfer.

description: Radiative heat transfer over short distances smaller than wavelengths in the spectrum of radiating surface is enhanced by near field effect. We studied radiative heat transfer between plane parallel surfaces of niobium films (critical temperature 9 K) sputtered on sapphire. The radiative heat flow was 20 times enhanced above the values given by Planck’s law (far-field values) in this measurement. Steep decrease of heat flow by a factor of five, caused by transition to superconducting state, was observed in the near field regime.
DOI: 10.18462/iir.iccrt.2016.0022
title: An overview and comparison of various refrigeration methods for microelectronics cooling.

description: Small-scale refrigerators, termed mesoscale refrigerators, are possible cooling solutions for high-power microelectronics. The performance of mesoscale refrigerators has not yet been experimentally demonstrated, although a recent theoretical model indicated that at temperatures near room temperature and above, a vapor compression refrigerator may compete successfully with a thermoelectric cooler having extremely high efficiency [1]. The present study proposes an overview and comparison between several alternative refrigeration methods used to actively cool the electronic components in a Power Microelectronics System. Three systems are evaluated, namely a miniaturized classical mechanical vapor compression system using an off-the-shelf compressor, a miniaturized system with ejector used for vapor compression, and finally a miniaturized refrigeration system with absorption, designed for similar cooling powers. The efficiency and COP of each system will be evaluated, together with associated reliability and cost related issues. The specifics of all proposed systems are based on the optimized performance of the miniaturized components of the various refrigeration systems, designed to fit the smaller scale power electronics populating a Printed Circuit Board (PCB) in a High-Power Microelectronics System. For all designs, an array of micro-channels is used for vaporizer/condenser units. Several components of the refrigeration system are thermally evaluated for cooling powers ranging from 20- 100W, with direct application to high power telecom units. Several advantages and/or disadvantages of these refrigeration-based cooling methods are highlighted. The study is concluded by identifying the pros and cons of implementing such systems to real-life microelectronics applications.
DOI: 10.14457/tu.res.2009.53
title: ความสัมพันธ์ระหว่างความฉลาดทางอารมณ์ ความสามารถในการเผชิญและฟันฝ่าอุปสรรค กับพฤติกรรมการเป็นสมาชิกที่ดีขององค์การของพยาบาล : กรณีศึกษาโรงพยาบาลรัฐแห่งหนึ่ง
DOI: 10.14457/tu.the.2009.562
title: การเกษียณอายุก่อนกำหนด : กรณีศึกษา : โครงการออกจากงานโดยความเห็นชอบร่วมกัน
DOI: 10.18462/iir.iccrt.2016.0023
title: Experimental study of a pulse tube cold head driven by a low frequency thermal compressor.

description: Cryocoolers operating at liquid helium temperature span a number of application domains, such as cooling of superconducting magnets, SQUID devices etc. GM type cryocoolers are widely used at liquid helium temperature but with shortcomings of using an oil-lubricated compressor that require regular maintenance and rotary valves that reduces the efficiency of the cryocooler. We are developing an alternative system that makes use of a Vuilleumier type thermal compressor. The system consists of a Stirling type pulse tube cryocooler that provides a cold heat sink to a thermal compressor. The thermal compressor generates pressure wave to drive a second pulse tube cold head. We experimentally studied the influence of pre-cooling temperature and frequency on the
performance of the pulse tube cold head. The lowest recorded temperature is 24.3 K with a pressure ratio of 1.18 and a frequency of 3 Hz. In this paper, the design of the cooling system and preliminary experimental results are presented.
DOI: 10.18462/iir.iccrt.2016.0024
title: Low temperature measurements of the hard magnetic materials.

description: Hard magnetic materials can be used at low temperatures down to the spin reorientation temperature, Tsr, (eg. around 135 K for Nd-Fe-B). In order to extend the lower limit of usage it is desired to decrease the value of Tsr. This paper reports the influence of different additions and substitutions (Mo, Mo-Cu, Ce) on the hard magnetic properties and Tsr of Nd-Fe-B based films prepared by vacuum deposition. The influence of embedding mode (by alloying or stratification) of additions (i.e. MoCu) in the Nd-Fe-B thin film volume on hard magnetic properties Tsr was also studied. The Nd-Fe-B films with MoCu additions, embedded by stratification, present an increase of the coercive field up to 23.9 kOe and a decrease of Tsr down to 56 K, while Nd-Fe-B films with Ce substitution present a slight deterioration of the magnetic properties and a decrease of Tsr down to 97 K.
DOI: 10.18462/iir.iccrt.2016.0025
title: Numerical investigation of R-134a ejector.

description: This paper studies the flow phenomena in the R-134a. In particular, an experimental investigation previously presented has been used as benchmark. In the experimental investigation, three different mixing chamber geometries with the same internal diameter, but different profiles have been tested. The critical conditions and the operating curves have been determined for three mixing chambers, without information of local flow phenomena. This paper deals with the numerical investigation of the local flow field inside the ejectors providing an insight view of the local flow phenomena and providing explanation to the phenomena experimentally observed. The CFD approach is based on a 2D axisymmetric representation of the ejectors, modeling the working fluids as a real gas. The CFD approach has been validated with the experimental data: the operating curves are predicted with relative errors less than 6% (critical mode) and less than 15% (subcritical mode) and local flow phenomena has been investigated.
DOI: 10.18462/iir.iccrt.2016.0027
title: Cooling characterization of conceptual Joule-Thomson cryogenic cooler.

description: In this study, cooling characterization of a conceptual Joule-Thomson cryogenic cooler operating with argon or nitrogen gases as coolant is studied by using numerical approach. Because of geometric complexities, a one dimensional model is used to study the thermo-fluidic behavior of the system. Heat transfer correlations used in the previous investigations are used while the thermodynamic properties of selected real gases are calculated by utilizing an inhouse code based on formulations presented in the literature. In most of the previous studies, the same friction factor formulation is used in pressure loss calculations. In this study,
pressure drop is calculated through a different approach. The major distinction of present study is related to pressure drop calculations. Since the model is one dimensional, finite difference method is applied to solve differential form of governing equations. Numerical results are validated with the results published in the literature and satisfactory agreement is obtained.
DOI: 10.18462/iir.iccrt.2016.0028
title: Heat transfer and pressure drop characteristics of wet air flow in metal foam under dehumidifying conditions: numerical model and experimental validation.

description: In the present study, the heat transfer and pressure drop characteristics of wet air flow in metal foams under dehumidifying conditions were investigated numerically. The numerical models of water droplet formation, growth and movement were developed; the mass transfer rate model during droplet formation process was obtained based on the heterogeneous nucleation rate and critical nucleation radius of droplet; the mass transfer rate model for droplet growth was developed based on the species conservation of water vapor on phase interface between the droplet and the moist air; the contact angle model of the droplet was developed based on the force analysis of droplets on the ligament. Both the models of mass transfer rate contact angle were reflected in the continuity, momentum and energy conservation equations as the mass source term and momentum term. The model prediction accuracy was verified based on the existing experimental data in the literature.
DOI: 10.5255/ukda-sn-852408
title: Results from post workshop survey
DOI: 10.6073/pasta/55e6cc01078ef068d5ded0ce142b7201
title: CGR02 Sweep Sampling of Grasshoppers on Konza Prairie LTER watersheds (1982-present)
DOI: 10.6073/pasta/9ecfbd070217e64b9483356aa7be2b6a
title: McMurdo Dry Valleys Winter Phytoplankton Densities during the 1990-1991 season
DOI: 10.14457/tu.res.2009.49
title: ทัศนะของนักศึกษาระดับปริญญาโทที่มีต่อคุณภาพการบริการทางการศึกษา
DOI: 10.4225/08/579315352bcd7
title: Parkes observations for project P630 semester 2012APRS

description: We propose to carry out the most ambitious and comprehensive all-sky survey for pulsars and transient sources to date. Using the 20cm multibeam and a new digital filterbank array this survey will create a petabyte digital record of the sky that can be data mined in the future and used to search for relativistic binary and millisecond pulsars, RRATs, and extragalactic radio bursts. The survey should discover 100s of new millisecond and normal pulsars and help define the lower limit to pulsar periods, test theories of relativistic gravity, find transients and provide pulsars for gravitational wave detection.
DOI: 10.4225/08/579318819c064
title: Parkes observations for project P630 semester 2012OCTS

description: We propose to carry out the most ambitious and comprehensive all-sky survey for pulsars and transient sources to date. Using the 20cm multibeam and a new digital filterbank array this survey will create a petabyte digital record of the sky that can be data mined in the future and used to search for relativistic binary and millisecond pulsars, RRATs, and extragalactic radio bursts. The survey should discover 100s of new millisecond and normal pulsars and help define the lower limit to pulsar periods, test theories of relativistic gravity, find transients and provide pulsars for gravitational wave detection.
DOI: 10.5517/ccdc.csd.cc1kh93g
title: CCDC 1444665: Experimental Crystal Structure Determination

description: Related Article: Dawn M. Marin, Jose Castaneda, Meesha Kaushal, Ghallia Kaouk, Daniel S. Jones, Michael G. Walter|2016|Chem.Phys.Lett.|659|137|doi:10.1016/j.cplett.2016.06.057
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccdc.csd.cc1ln7gy
title: CCDC 1479210: Experimental Crystal Structure Determination

description: Related Article: Umie F.M. Haziz, Rosenani A. Haque, A.A. Amirul, N. Shaheeda, Mohd R. Razali|2016|Polyhedron|117|628|doi:10.1016/j.poly.2016.07.005
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccdc.csd.cc1jm90g
title: CCDC 1418715: Experimental Crystal Structure Determination

description: Related Article: Willian X.C. Oliveira, Cynthia L.M. Pereira, Carlos B. Pinheiro, Klaus Krambrock, Thais Grancha, Nícolas Moliner, Francesc Lloret, Miguel Julve|2016|Polyhedron|117|710|doi:10.1016/j.poly.2016.07.014
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccdc.csd.cc1kv08p
title: CCDC 1454962: Experimental Crystal Structure Determination

description: Related Article: Willian X.C. Oliveira, Cynthia L.M. Pereira, Carlos B. Pinheiro, Klaus Krambrock, Thais Grancha, Nícolas Moliner, Francesc Lloret, Miguel Julve|2016|Polyhedron|117|710|doi:10.1016/j.poly.2016.07.014
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccdc.csd.cc1kwkcc
title: CCDC 1456453: Experimental Crystal Structure Determination

description: Related Article: Joanna Lach, Normen Peulecke, Peter G. Jones, Ina Dix, Joachim W. Heinicke|2016|Polyhedron|117|795|doi:10.1016/j.poly.2016.07.011
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccdc.csd.cc1lp5q5
title: CCDC 1480117: Experimental Crystal Structure Determination

description: Related Article: Mohammed Bakir, Mark A.W. Lawrence, Peter N. Nelson, Rebecca R. Conry|2016|Electrochimica Acta|212|1010|doi:10.1016/j.electacta.2016.07.051
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccdc.csd.cc1lb211
title: CCDC 1469432: Experimental Crystal Structure Determination

description: Related Article: Qipeng Li, Panpan Yu, Jiagang Luo, Jinjie Qian|2016|Microporous and Mesoporous Materials|234|196|doi:10.1016/j.micromeso.2016.07.018
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.6073/pasta/3b480b23a703e71f5e5460f597f5ef03
title: CGR01 Sweep Sampling of Grasshoppers on Konza Prairie LTER Watersheds in 1981 Only
DOI: 10.18462/iir.iccrt.2016.0026
title: Simulation of R718 flash boiling flow inside motive nozzle of ejector.

description: Flash boiling steam/water flow phenomenon is encountered when a saturation mixture flow of R718 refrigerant experiences a depressurization rapidly inside motive nozzle of ejector. In this work, the phenomenon is modelled via CFD approach through a mixture model with slip velocity between two phases. To account for thermal non-equilibrium, the authors use evaporation/condensation model with evaporation/condensation frequency (time delay of boiling/condensing) is extracted from experimental data. This study tested on a 2D convergent-divergent nozzle with a range of total pressure-inlet (134 – 189 kPa)
and range of inlet liquid mass fraction (0 - 0.36) for case of saturation vapor/liquid R718 flow. Results of simulation in this case are in agreement with experimental data when maximum relative error is 8.2 % . The same geometry and numerical model is also applied for superheated vapor R718 flow in range of total pressue-inlet (91 – 141 kPa) and total inlet temperature (378 – 399 K), maximum relative error between simulation and experimental data in this case is 9.2%.
DOI: 10.18462/iir.iccrt.2016.0029
title: Cooling unit for the AmpaCity project: two years successful operation.

description: High temperature super conductors (HTS) can efficiently be cooled with liquid nitrogen down to a temperature of 64 K (-209°C). Lower temperatures are not practical, because nitrogen becomes solid at 63 K (-210°C). To achieve this temperature level the coolant has to be vaporized below atmospheric pressure. Messer has developed a cooling unit with an adequate vacuum subcooler, a liquid nitrogen circulation system, and a storage vessel for cooling an HTS power cable. The cooling unit was delivered in 2013 for the German AmpaCity project of RWE Deutschland AG, Nexans and Karlsruhe Institute of Technology. Within this project RWE and Nexans installed the worldwide longest superconducting power cable in the city of Essen, Germany. The cable is in operation since March 10th, 2014.
DOI: 10.18462/iir.iccrt.2016.0030
title: Helium management concept for the ITER cryogenic system.

description: The ITER cryogenic system comprises multiple elements with an overall helium inventory of about 24 ton. Distribution of helium over the cryogenic system varies depending on operational modes. A mode analysis has been carried out in order to optimise and validate the solution and equipment sizing for the helium storage, recovery and purification systems. This paper outlines the methodology used, the input data for the study (system requirements, proposed sizing and assumptions) and the main results of the study. It describes key elements of the He storage consisting of GHe (warm and cold) vessels and LHe vessel. It also justifies the choice of the storage configuration and demonstrates sufficient storage flexibility for the ITER cryogenic system operation.
DOI: 10.18462/iir.iccrt.2016.0031
title: Materials and components in cryogenic distillation.

description: Industrial plants, which use cryogenic process, like plants for H-D-T distillation, have high hazards. Therefore, it is important to strengthen all the required safety measures, starting from materials, with high tenacity in order to assure safety in working and low diffusion and permeation properties, in order to avoid tritium implant into the crystalline structure, and finishing with the technical procedures and manuals for a correct installation and operation of cryogenic facilities. The distillation systems components must comply with the followings rules: to use reliable cryogenic sources; to have proper cold-boxes who shelter the columns, in order to decrease the environmental thermal influences; to have for the columns, condensers with smooth dropping, re-boilers with
steady controllable boiling, internals solutions with higher separation factor; to have low mass and high thermal capacity heat exchangers.
DOI: 10.18462/iir.iccrt.2016.0032
title: Thermodynamic analysis of a J-T heat exchanger used in G-M/J-T helium refrigerator for a cryoadsorption test facility.

description: A G-M/J-T helium refrigerator system is designed for a cryoadsorption test facility at 4.5K. The refrigerator includes a heat exchanger consisted by counterflow of J-T valve and a helically twined single finned-tube. A nonlinear variable specific heat capacity model for helium gas under 15K has been developed by the law of thermodynamics to study the thermal characteristics of the heat exchanger. Its performance is discussed for the test works in various operation conditions and the results indicate that weakening the interact surrounding environment and enhancing the number of Cr are practical and reasonable for the heat exchanger and useful for performance analysis of similar heat exchangers.
DOI: 10.18462/iir.iccrt.2016.0033
title: Cryogenic calibration facility for supercritical helium venturi flowmeter.

description: Accurate flow measurement is essential in cryogenic field which is used for control, indication, alarm or commercial purposes. Because of good accuracy, simple structure and wide temperature range application, venturi flowmeters are selected to monitor supercritical helium flow rates at cooling loop of EAST (Experimental Advanced Superconducting Tokamak) superconducting magnets. In order to calibrate manufactured venturi flowmeters before application, a cryogenic calibration facility has been designed and constructed at CASIPP. The system of cryogenic calibration facility is comprised of cryostat, air-bath type vaporizer, standard flowmeter, cryogenic valve, helium refrigerator and data acquisition system. The maximum supercritical helium flow rate is 6g/s at about 5bara and 5K, which is available by a Linde LR280 helium refrigerator with a capacity of about 900W at 4.5K. This paper mainly presents the system of the cryogenic calibration facility and the first cool down with liquid nitrogen.
DOI: 10.5517/ccdc.csd.cc1lqfg6
title: CCDC 1481318: Experimental Crystal Structure Determination

description: Related Article: Chang-Kun Xia, Fan Wu, Kai Yang, Wen Sun, Yuan-Yuan Min, Yun-Long Wu, Xiao-Jing Lu|2016|Polyhedron|117|637|doi:10.1016/j.poly.2016.07.003
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccdc.csd.cc1lqfh7
title: CCDC 1481319: Experimental Crystal Structure Determination

description: Related Article: Chang-Kun Xia, Fan Wu, Kai Yang, Wen Sun, Yuan-Yuan Min, Yun-Long Wu, Xiao-Jing Lu|2016|Polyhedron|117|637|doi:10.1016/j.poly.2016.07.003
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.