cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.18462/iir.thermag.2016.0141
title: Improvement of the AMR's performance: multi-segment regenerator and by-pass flow.

description: This paper analyses the improvement of an Active Magnetic Regenerator performance by two methods. The first one is the layering of several magnetocaloric materials in series by their Curie temperature in order to create a higher temperature span. The second method is the use of a countercurrent heat exchanger by-pass flow to increase the machine’s final Coefficient of Performance and cooling power. A time-dependent numerical model was used to analyze multiple cases of magnetocaloric segment layering. The best layering was identified and compared with the by-pass configuration. Some interesting results were obtained which highlighted the point that the joint use of a by-pass on a magnetic refrigeration system with proper MCM segment layering significantly changes the behavior of an AMR. These results were compared to experimentally-obtained data from an existing rotary research prototype which had been specially adapted to fit the requirements of these new operating methods.
DOI: 10.6073/pasta/105b5bd65c3f10c461446753e0ccb8af
title: Far northeastern Siberia boreal forest data: Mean soil temperature within experimental burn plots
DOI: 10.6073/pasta/77916c75b866f3b9a68ba7541adccaea
title: Firescars with distance from towns in Interior Alaska (1988-1993)
DOI: 10.6073/pasta/993a200a931e9f85e66939d08b76b048
title: Alaskan Peatland Experiment: Community structure and productivity data for 2007-2010 VII - BGNPP
DOI: 10.6073/pasta/b8a41a7af1cc6175a9efc5d7b8be65e4
title: Alaskan Peatland Experiment: Community structure and productivity data for 2007-2010 VIII - VGA
DOI: 10.6073/pasta/6a2b4b9a88c02358ef4dd7a26dc8e00a
title: Firescars with distance from towns in Interior Alaska (1994-1999)
DOI: 10.6073/pasta/906c3a4618268ad320cd2499543bbd24
title: Firescars with distance from towns in Interior Alaska (2000-2005)
DOI: 10.6073/pasta/be406e7da3127d7426f68bed5ed31006
title: Far northeastern Siberia boreal forest data: Larch recruitment within experimental burn plots
DOI: 10.6073/pasta/cf6ebbc0e98294ba87b14227aea00202
title: Alaskan Peatland Experiment: Community structure and productivity data for 2007-2010 IX - Stem Density
DOI: 10.15468/uuh1dt
title: Taxonomy of Temnothorax simlensis stat. nov. (Hymenoptera: Formicidae) with first description of sexual castes along with a mention of its plesiobiotic association with Himalayan species of genus Myrmica

description: This dataset contains the digitized treatments in Plazi based on the original journal article Bharti, H., Gu, I., Sasi, S. (2016): Taxonomy of Temnothorax simlensis stat. nov. (Hymenoptera: Formicidae) with first description of sexual castes along with a mention of its plesiobiotic association with Himalayan species of genus Myrmica. Sociobiology 63 (2): 748-754, DOI: 10.13102/sociobiology.v63i2.869
DOI: 10.18462/iir.thermag.2016.0142
title: New magnetic refrigeration prototype with application in household and professional refrigerators.

description: The number of magnetic refrigeration prototypes with high cooling capacity and large temperature span is limited and there is ample room for new designs and improvements. In this paper a new prototype, designed and built, aiming at 200 W cooling capacity and about 40 K temperature span is presented. Such a unit is suitable for applications in household and professional refrigerators. In the current work, design of the prototype is described, practical issues solved to make the prototype running are explained, and preliminary test results are presented.
DOI: 10.18462/iir.thermag.2016.0143
title: Simulation of magnetic refrigeration systems with thermal diodes and axial conductive heat transfer.

description: In conventional magnetic refrigeration cycles with heat transfer fluid, the achievable cycle frequency, and therefore, specific cooling capacity is limited. Furthermore, ineffective use of magnet in low frequency devices makes them expensive. In this work, as an alternative technique, utilizing conductive heat transfer controlled by two different types of thermal diodes, gas-liquid and contact-break diodes, is investigated. For that purpose two software models are made to simulate the performance of a magnetic refrigerator with each of the diodes. The results of simulations are presented and comparison is made between these results and
the results of older studies which used ideal properties. According to the results, due to the limited thermal conductivity of the magnetocaloric materials, the increase in the capacity becomes small with too high frequencies. Among the thermal diodes and materials studied, the liquid metal Galinstan as the conducting fluid in an active diode gave the best results.
DOI: 10.6073/pasta/183704d71134f8e4d79dc58bdafd11e5
title: Summary of environmental and stand characteristics of thinleaf alder sites along the Tanana River floodplains from 2006-2007.
DOI: 10.6073/pasta/2be88d4f18e0dc77fe00752b5b10f484
title: Alaskan Peatland Experiment: Community structure and productivity data for 2007-2010 X - Leaf Area
DOI: 10.6073/pasta/2d248acf001ee500386e38c59109d7f2
title: Far northeastern Siberia boreal forest data: Soil horizon and thaw depths across a larch forest density gradient
DOI: 10.6073/pasta/9b73897fb9c007cbe3e616adfd1fee15
title: Far northeastern Siberia boreal forest data: Larch tree snag (dead tree) size distribution across a density gradient
DOI: 10.18462/iir.thermag.2016.0145
title: Optimization of heat exchange in magnetic refrigerators and thermomagnetic motors.

description: The power and efficiency of magnetic refrigerators and thermomagnetic motors depend on their operating frequencies. To improve the efficiency of these machines, it is necessary to design the regenerators/heat exchangers so to present heat transfer as high as possible, allowing higher operational frequencies. In several machines, a fluid flowing through internal channels promotes the heat transfer. In such cases, as the temperature difference governing heat transfer decreases along the channels length, the heat transfer also decreases. One solution for this problem is the use of non-linear heat transfer area increase along the channels. That can be done by changing the cross section area or the profile of the channels. This study presents an experimental analysis that shows the effectiveness of this technique by comparing heat exchangers with cylindrical, conical and non-prismatic shaped internal channels using infrared thermography.
DOI: 10.6073/pasta/39c5cd973c8233d35042443b0c143210
title: Far northeastern Siberia boreal forest data: Larch tree size distribution across a density gradient
DOI: 10.6073/pasta/4464be01fd6d45552cd4f30aa7a01d95
title: Alaskan Peatland Experiment (APEX): Static chamber methane fluxes from bog sites, 2008-2011
DOI: 10.6073/pasta/de79443d3d0566982539017479462ba8
title: Stem diameter of trees and shrubs in thinleaf alder sites along the Tanana River floodplains and severity of stem canker infection of alder in 2006.
DOI: 10.6073/pasta/e4eb38c8fdd755c0c90390614e25901f
title: Impacts of wildfire on stream water chemistry in the Caribou-Poker Creeks Research Watershed during the summers of 2002-2007
DOI: 10.18462/iir.thermag.2016.0147
title: Epoxy-bonded La(Fe,Mn,Si)13Hz as a multilayered active magnetic regenerator.

description: The high magnetocaloric effect and tunability of the Curie temperature over a broad range makes La(Fe,Mn,Si)13Hz a promising magnetocaloric material for applications. Due to a volume change across the transition and the brittleness of the material as well as erosion due to fluid flow, the particles of the material may break apart during operation. In this context, we studied epoxy-bonded La(Fe,Mn,Si)13Hz regenerators, in a small versatile active magnetic regeneration (AMR) test device with a 1.1 T permanent magnet source. The magnetocaloric material was in the form of packed irregular particles (250-500 μm), which were mechanically held in place by an epoxy matrix connecting the particles, improving the mechanical integrity, while allowing a continuous porosity for the fluid flow. Water with 2 wt% ENTEK FNE as anti-corrosion additive was used as the heat transfer fluid for the epoxy-bonded regenerators. A series of AMRs was evaluated by varying the epoxy content in the range 1-4 wt%.
DOI: 10.18462/iir.thermag.2016.0149
title: Design and fabricating of a two-in-one compact magnet array.

description: Usually two Halbach[1] magnet arrays are required in order to make a force balance for a whole rotary magnetic refrigerator system. Except for a large volume of magnet array, a coupling gear is needed for the two magnet arrays. It is found that a new magnet array may avoid the above disadvantages. The magnet arrays are divided into inner two-hole Halbach-like magnet array and outer Halbach magnet array. The outer magnet array may rotate around the inner magnet array. The inner Halbach-like magnet array contains two rectangular holes parallel to cylindrical axis. The magnetic fields in the holes of inner magnet array are uniform and equal with opposite directions. The field in two holes alternately varies with the rotation of outer magnet array. It is shown that the field may be fairly uniform by calculation. The real two-in-one magnet array is made successfully and the measuring data of magnetic field support the calculation results.
DOI: 10.18462/iir.thermag.2016.0150
title: A new concept refrigeration model based on thermal switch and numerical calculation.

description: A new concept electrocaloric effect(ECE) refrigeration model based on a certain thermal switch(TS) is presented in this paper. In the model tabular ECE materials and tabular TS alternately arrange parallelly and tightly, forming many units of the same structure. The TS has two states, on and off according to external control orders. The electric field is applied in every other ECE material sheet and let every other TS sheet be on within the fore semi-period at the same time, and alternately going adversely within the rear semi-period. The thermal conductivity of the TS in the off-state should be much lower than that in the on-state. The calculation shows that the cooling power with 20 K temperature span may be more than 1 kW per kg ECE material, and unit area cooling power may be more than 8 KW/m2 when the sheet is 0.15mm thin. In addition the COP may be up to 12 at most.
DOI: 10.6073/pasta/59beaf0c74f4735697227d8e9daf7d47
title: Far northeastern Siberia boreal forest data: Fine woody debris abundance across a larch forest density gradient
DOI: 10.6073/pasta/a7ea5022c3841778f3169faea4030908
title: Site, environmental and stand data across an age since fire range of 6-338 years for 30 sites in northern Yukon and central Alaska
DOI: 10.7939/r3mc8rj6f
title: Home ranges in moving habitats: polar bears and sea ice - Data
DOI: 10.18462/iir.thermag.2016.0151
title: Impact of the integration work on the performance measurements of the magnetocaloric cooling system and its target refrigerated cabinet.

description: Cooltech Applications has completed the construction and tests of a new Scale-up rotary magnetic cooling system. This specific prototype has been designed for research purposes. Its modular architecture has been used to generate improvements on the results to be integrated into the more compact commercial devices. This system uses NdFeB permanent magnets providing a peak field of 0.8 T in the air gap and 3.1 kg of parallel plates of Gd alloys. On the technology roadmap focused on the integration inside a target refrigerated cabinet, external liquid/air heat exchangers and airflow configurations have been identified as key drivers. In this paper the performance of this latest interfaced system is reported for a liquid flow rate of 6 liters/min. Actual measurements demonstrate that it was achievable to reach the target specification of the first application from industrial partners: to cool an air volume of 350 liters down to a temperature of +2°C.
DOI: 10.18462/iir.thermag.2016.0157
title: Theoretical description of the magnetocaloric effect in Mn-Fe-P-Si alloys.

description: We apply a thermodynamic model describing magnetoelastic effects and based on mean field theory to understand the physical origin of the first order ferro- to paramagnetic magnetostructural transition occurring in Mn1.3Fe0.65P0.5Si0.5. The phenomenological parameters of the model are determined through comparison with the entropy data measured by Peltier calorimetry under magnetic field. The values obtained support the idea that: the phase transition is driven by the strong magnetoelastic coupling present along the a lattice axis; the spin entropy plays a key role in the transition; the structural contribution has a minor counteracting role. Moreover, the number of magnetic moments derived from the model agrees with the picture describing the paramagnetic phase of the system as due to the disordered magnetic moments at the Mn sites only.
DOI: 10.5281/zenodo.221348
title: A  Voltage-Dependent Fluorescent Indicator For Optogenetic Applications, Archaerhodopsin-3: Structure And Optical Properties From In Silico Modeling

description: seq.fasta and P96787_1UAZ.fasta are the input files for I-TASSER suite.

The command of running I-TASSER suite:<br>
path-to-I-TASSER-dir/I-TASSERmod/runI-TASSER.pl -pkgdir path-to-I-TASSER-dir -libdir path-to-I-TASSER-lib-dir -seqname P96787 -datadir path-to-workdir -outdir path-to-outdir -java_home /usr/ -restraint2 P96787_1UAZ.fasta

For detailed data please refer to I-TASSER documentation.

The P96787_1UAZ_IT.zip is an archieve with I-TASSER output for the best achaerhodopsin-3 prediciton.

SCRIPTS_GENERAL.zip contains all the scripts for the structure postprocessing: addition of hydrogen atoms,<br>
chromophore insertion and equilibration, internal waters addition.

P96787_wi.pdb is a final prepared structure.

Input files for spectra calculations are rhodopsin_gaussian.inp and rhodopsin_orca.inp.
DOI: 10.6073/pasta/016bdce2dd5e5e37f8b43547323d7b28
title: Samples of individual trees (cones, age) within sites across an age since fire range of 6-338 years for 30 sites in northern Yukon and central Alaska
DOI: 10.6073/pasta/6f8816ba7a1f0297d5a88013c7fe37af
title: Observational study of post-fire mycorrhizal communities associated with resprouting Betula nana shrubs across a fire-severity gradient in the Anaktuvuk River Fire burn scar, 2009
DOI: 10.18462/iir.thermag.2016.0158
title: Modeling of a novel digital hydraulic system for a magnetic refrigerator.

description: In rotary magnetic refrigerators, the flow distribution system can be the major energy-consuming component of the overall transmission system. Most magnetic refrigerators developed to this date employ rotary valves (face-to-face sealing) for the fluid flow management. In this work, a mathematical model of a novel digital hydraulic system for a magnetic refrigerator was developed. The modeling parameters of the flow distribution system were based on the operating conditions of the device developed at POLO/UFSC. By varying the input parameters for the solenoid valves and the system operating conditions, the dynamic response of the hydraulic system was evaluated in terms of the absolute pressure and the volumetric fluid flow rate at any point of the circuit. The energy consumption of the digital hydraulic system was also determined. Based on the solenoid valves power consumption, a qualitative analysis was carried out to compare the new solenoid valve system to that of a face-to-face flow management system.
DOI: 10.6073/pasta/0bef3b470d70d58c7e1cad666044cea7
title: Alaska Peatland Experiment: Biweekly flux data and environmental measurements (soil temperature, soil moisture, seasonal thaw depth, water table depth)
DOI: 10.6073/pasta/0d49f32d0b4ebab69275e58042b3a9ac
title: Alaska Peatland Experiment: 2009 All sites Root Biomass data taken during peak biomass (late July)
DOI: 10.18462/iir.thermag.2016.0161
title: Dynamic temperature measurement for magnetocaloric materials.

description: A device to measure the dynamic response of magnetocaloric effect in terms of temperature change at different speed and up to 1 T.ms-1 has been developed. The magnetic source is based on rotating magnets and the temperature measurement on thermocouple. This prototype will be able to explore the dynamic response of magnetocaloric effect under controlled temperature for different type of material: first order and second order phase transition material.
DOI: 10.6073/pasta/08795087874049fda31cb325dece3506
title: Alaska Peatland Experiment: 2010 Alpha Root Biomass data taken during peak biomass (late July)
DOI: 10.18462/iir.thermag.2016.0163
title: Peculiarities of the magnetocaloric effect in the vicinity of the ferromagnetic-antiferromagnetic transition in an iron-rhodium alloy.

description: We have investigated the large magnetocaloric effect (MCE) in a Fe50.4Rh49.6 alloy subjected to a slowly cycled magnetic field of up to 1.8 T in magnitude over a range of temperatures, 250 K &lt; T &lt; 350 K. Our measurements showed that the MCE associated with the first order ferromagnetic/antiferromagnetic phase transition in this material was asymmetric with respect to whether the transition took place by heating the material from temperatures below the transition or by cooling it from above. We have explained these peculiarities using ab-initio density functional theory-based disordered local moment theory calculations.
DOI: 10.6073/pasta/8fb8700f70f228fc0685b59c63ba3032
title: Alaska Peatland Experiment: 2011 Gradient Root Biomass data taken during peak biomass (late July)
DOI: 10.18462/iir.thermag.2016.0173
title: Electrocaloric polymers: different electric field cycles to increase their efficiency.

description: The evaluation of electrocaloric properties of a material can be achieved by two methods: either by the indirect method which uses Maxwell relations to link the electrocaloric effect to the polarization versus temperature or by the direct measurement of the heat flux response to an electric field variation. In this paper we show how the heat flux method is able to evaluate the efficiency of different types of electric field cycles applied to a ferroelectric material with hysteresis. We present experiments on the polymer P(VDF-TrFE)
70/30 and discuss how to improve the cooling power in connection with respect to the non zero electrical conductivity of the material.
DOI: 10.18462/iir.thermag.2016.0174
title: Theoretical modeling of heat transfer processes in Ni-Co-Mn-In magnetic wires.

description: Evidently, the choice of geometry for a regenerator or magnetic cooling cell is an important problem in the magnetic cooling technology. In our work, we study a heat transfer in the three-dimensional magnetic cooling cell involving microwires of Ni45Co5Mn37In13 Heusler alloy. In the present study of heat transfer processes in the system with microwires, we used the system of differential equations including the Navier–Stokes and heat equations for fluid and solid, while the incompressible fluid is passed. The relaxation times of the temperature of wires, the temperature distribution in the magnetic wires and coolant in the cell were calculated. Our data clearly point to the fact that the relaxation time increases practically linearly with the increasing microwire diameter.
DOI: 10.6073/pasta/e086ae0d8ed18c4409668e39c4708bbb
title: Alaska Peatland Experiment: 2011 Beta Root Biomass data taken during peak biomass (late July)
DOI: 10.18462/iir.thermag.2016.0175
title: Direct in situ study of magnetocaloric effect and martensitic twins structure of Ni-Mn-Ga Heusler alloy in high magnetic fields up to 14T.

description: This work reports the results of the experimental studies of magnetocaloric effect (MCE) in Ni2.16Mn0.84Ga Heusler alloy with separate magnetic and structural phase transitions in adiabatic (ΔT) and quasi isothermal (ΔQ) regimes by direct methods in magnetic fields up to 10 T. The data obtained allow for comparing ΔT and ΔQ values in the vicinity of martensitic transition and Curie point. It is found maximal values of ΔT = 4,7 K at T = 311 K and ΔQ = 4,6 kJ/kg at T = 313 K in the fields H = 10 T. Optical observations of martensitic twins structure origin and evolution under the influence of high magnetic field confirm the reversible magnetic-field-induced martensitic transition at constant temperature T = 313 K in the field 14 T.
DOI: 10.18462/iir.thermag.2016.0176
title: Magnetocaloric properties of the stacked Ni50Mn18.75-xCu6.25+xGa25 (x = 0÷1) polycrystalline alloys.

description: Nowadays, much effort is devoted worldwide to the development of refrigerators utilizing the magnetocaloric effect (MCE). The MCE is observed in the course of heating and cooling of the material during the successive cycles of magnetization and demagnetization of materials exhibiting magnetic transitions, i.e. ferromagnetic - paramagnetic transition at the Curie temperature. To this group belong Heusler phase based Ni2MnGa alloys. In our paper the effect of stacking of NiMnCuGa alloys, having various compositions, was studied towards achieving a broader temperature range of the relatively high magnetocaloric properties. Three stacked alloys, with 6.25, 6.75 and 7.25 at. % of Cu content exhibit a broad spectrum, over 25°C, of the magnetic entropy change (ΔS), calculated on a basis of thermomagnetic curves recorded with 200 kA/m step over the 0-1200 kA/m range. A single alloy, having 6.25 at. % Cu, exhibits high value of the magnetic entropy change, approx. 12 J/kgK, however, the change occurs within a narrow temperature range of a few centigrades. Calculations of the relative cooling power (RCP) revealed the value of 62.5 J/kg for the stacked alloys, over a broad temperature range of 25°C, which exceeds the respective RCP for the single alloy – 46.5 J/kg. Although the maximum value of the ΔS is three times lower than for the single alloy the direct measurement of the adiabatic temperature change (ΔTad) revealed the constant value of the ΔTad equal to 0.4 °C in the temperature range from 35 to 65 °C. NiMnCuGa alloys package seems to be an interesting alternative to expensive alloys based on gadolinium or lanthanum. The temperature change can be relatively easily controlled with the chemical composition and/or the heat treatment of the alloys thereby increasing the operating temperature range of the devices made of them. The alloys described are also simple to prepare by casting and heat treatment.
DOI: 10.18462/iir.thermag.2016.0177
title: Properties of gadolimium wire for magnetic refrigeration.

description: In an active magnetic regenerator (AMR) cycle, the shape of the magnetocaloric material (MCM) has a large influence on the pressure losses of the refrigerant fluid. The results of a simulation suggest that a wire-shaped MCM lined up in the regenerator lead to more reductions in the pressure losses compared to packed particles of MCM [1]. However, no experimental study verified the simulation results. We have developed a gadolinium (Gd) wire with a diameter of 0.25 mm to increase the power of an AMR based on the simulation results. This paper reports mechanic and magnetic properties of the wire. The tensile strength of the wire was about 400 MPa and the elongation was about 3%. These properties were almost the same as those of a copper wire. This suggests that Gd wires can easily be handled like common metal wires. For example, this wire can be lined up side by side in the regenerator. The maximum magnetic entropy change, ΔSm, of the wire was about 2.6 J/Kg*K. This value was lower than that of the particles (‐2.8 J/Kg*K). The Curie temperature, TC, of the wire was slightly lower than that of the particles. More detailed data will be reported in the poster session.
DOI: 10.6073/pasta/2c5db9ec860071b1711e14d4d3fc8998
title: Alaska Peatland Experiment: 2010-2011 Root Respiration Experiment Root Fluxes
DOI: 10.6073/pasta/72c3bda7074ece936e25860fd58b1a96
title: Alaska Peatland Experiment: 2010-2011 Root Respiration Experiment Aboveground biomass