cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.48577/jpl.wjjkjo
title: Magnesium silicate chimneys at the Strytan hydrothermal field, Iceland as analogues for prebiotic chemistry at alkaline submarine hydrothermal vents on the early Earth

description: The Strytan Hydrothermal Field (SHF) in Iceland, is of great interest as a member of the class of alkaline submarine hydrothermal vent systems that are leading contenders for the places where life on Earth may have begun. In this work we analyse the composition, structure, and mineralogy of samples from hydrothermal chimneys at the SHF. We find that the chimney mineral precipitates are composed of Mg-silicates including clays of the saponite-stevensite group (high Mg and Si, low Fe and Al); Ca-carbonates and Ca-sulfates. The chimney samples were porous / permeable structures with porosity evident at the macro and micro scale; pores were visible down to ~1 µm in size and possibly smaller. The chimney interiors as observed with SEM (Scanning Electron Microscopy) and X-ray CT (computed tomography) scanning exhibited complex structures with high internal surface area. EDX (energy-dispersive X-ray spectroscopy) analysis showed an increase in the Mg/Si ratio with oxygen content in the external area of the chimney. Chemical garden analogue experiments in the laboratory produced similar Mg-silicate chimneys with porous internal structures, indicating that injection-precipitation experiments can be high-fidelity analogues for natural hydrothermal chimneys at the SHF. The SHF chimneys may be able to host similar prebiotic reactions as proposed for other alkaline vents (e.g. the Lost City Hydrothermal Field); the additional presence of silicates and clays in the SHF may also facilitate prebiotic chemistry favoured on clays and silica gels. Analysis of the fluid dynamics shows that these chimneys are intermediate in growth rate compared to faster black smokers and the slower Lost City. The SHF is therefore a prebiotic vent analogue for worlds such as early Earth and Mars that may have had basalt-hosted alkaline hydrothermal systems.
DOI: 10.48577/jpl.f1ut01
title: The Variability of Lunar Mare Basalt Properties from Surface Rock Abundance

description: No abstract available.
DOI: 10.48577/jpl.ws8zjc
title: On-orbit Calibration and Performance of the EMIT Imaging Spectrometer

description: The Earth Mineral Dust source InvesTigation (EMIT) is a remote orbital visible shortwave infrared (VSWIR) imaging spectrometer, also known as a hyperspectral imager. This article describes the EMIT spectroradiometric calibration and on-orbit validation experiments. EMIT was launched to the International Space Station in July 2022, beginning a year-long mission to map the mineralogy of Earth’s mineral dust forming regions. It achieves several notable firsts for an instrument of its class. It demonstrates successful on-orbit adjustments of FPA alignment with sub-micron precision. It offers spectral uniformity better than 98%. Optical artifacts in the measurement windows of the spectrum are at least three orders of magnitude below the primary signal. EMIT consists of just a handful of optical elements, no shutter, and no onboard calibration systems. With this simple and efficient design, EMIT satisfies the stringent needs for the next generation of VSWIR imaging spectrometers, demonstrating that tomorrow’s spectral measurements are now possible with contemporary technology.
DOI: 10.48577/jpl.wb1z5f
title: Structural Analysis and Test of a Highly-Nonlinear, Stability-Critical System on Europa Clipper

description: The structural qualification of the Europa Clipper spacecraft included testing of a highly-nonlinear, stability-critical Linear Separation Assembly (LSA). Of note, the LSA was ultimately descoped from the final Europa Clipper flight configuration in favor of a Marmon Clamp-style separation device. Nonetheless at the time of spacecraft static testing the LSA was the flight configuration and thus was structurally tested. The LSA is a double-wall cylinder design with a frangible circumferential notch. The firing of a pyrotechnic device expands a detonation tube which then severs the structure at the frangible notch, releasing the spacecraft from the launch vehicle. Two segments of aluminum 0.025 inches thick is all that exists at the minimum cross-section of this notch around the periphery, across which the launch loads of a 6000kg spacecraft must be reacted. The throat of the notch is predicted to yield substantially under launch loads. If the throat yielding propagates far enough it would become an unstable plastic hinge, leading to catastrophic plastic buckling of the structure. Testing at the subassembly level was successfully carried out to validate the LSA; however, analysis indicates the boundary conditions of the subassembly-level test artificially relieved stresses within the LSA and did not adequately exercise this failure mode. Thus, the risk of this failure mode at spacecraft-level testing could not be retired based on the success of the subassembly-level test. Extensive analysis was performed on the LSA to ensure notch throat yielding is not detrimental in nature and that the structure would not buckle during spacecraft-level static testing. Studies in the linear regime were carried out attempting to bound the buckling behavior of the notch in cases where the notch were fully-elastic or fully-yielded. These studies were augmented with material assessments such as the Neuber method to determine the extent of the predicted material strain to compare against elongation limits. A fully-nonlinear model of the LSA was assembled to support the assessments of notch yielding and a novel postprocessing technique was developed to identify the load at which the structure begins to present signs of instability. Ultimately this concert of analytical methods was substantiated by the successful completion of the Europa Clipper spacecraft static test. This paper takes a structural engineering focus walking through the concerns identified through both subassembly and spacecraft-level analysis and testing of the LSA. The paper describes in detail the analytical methods employed and developed to demonstrate the structural capability of the LSA and the testing that substantiates the conclusions of that analysis.
DOI: 10.48577/jpl.gxpiss
title: IEEE Paper - Systems Engineering of the Psyche Payload

description: The Psyche mission is a journey to a unique metal asteroid of the same name, (16) Psyche, orbiting the Sun between Mars and Jupiter. Slated for launch in October of 2023, Psyche seeks to answer questions about the formation of planets and explore what may be an exposed nickel-iron core of an early planetesimal, similar to the one hidden at the center of our own Earth. The mission is led by Arizona State University. NASA's Jet Propulsion Laboratory is responsible for mission management, systems engineering, operations, navigation, and some subsystems including command and data handling and telecommunications. This paper focuses on the Psyche Payload system, which consists of a multispectral imager, a magnetometer, a gamma-ray and neutron spectrometer (GRNS), and a deep space optical communications (DSOC) experiment. GRNS will measure the asteroid’s composition, the magnetometer will determine whether Psyche is a core by measuring any remnant magnetic field, and the imager will map its surface and characterize its topography. DSOC is a technology demonstration hosted by the Psyche spacecraft and intended to pave the way for low-power/high-bandwidth communications in deep space using individual photons to encode and transmit information. This paper focuses on the Payload development efforts and key systems engineering processes that made it possible including requirements development, risk reduction activities, key challenges and anomalies, verification and validation, and the final stretch to launch during assembly and test with the integrated spacecraft.
DOI: 10.48577/jpl.feb6l2
title: Global shape, gravity field, and libration of Enceladus

description: In order to improve our understanding of the interior structure of Saturn’s small moon Enceladus, we reanalyze radiometric tracking and onboard imaging data acquired by the Cassini spacecraft during close encounters of the moon. We compute the global shape, gravity field, and rotational parameters of Enceladus in a reference frame consistent with the International Astronomical Union’s definition, where the center of the Salih crater is located at -5° East longitude. We recover a quadrupole gravity field with 𝐽! and a forced libration amplitude of 0.091°±0.009° (3-𝜎). We also compute a global shape model using a stereo-photoclinometry technique with a global resolution of 500 m, although some local maps have higher resolutions ranging from 25 m to 100 m. While our overall results are generally consistent with previous studies, we infer a thicker 27–33 km mean ice shell, a thinner 21–26 km mean ocean thickness, and a mean core density range of 2270–2330 kg/m3.
DOI: 10.48577/jpl.mr9jvo
title: (UWG) ECOSTRESS and SBG update

description: No abstract available.
DOI: 10.48577/jpl.gcfzhm
title: Common Origin of Trapped Volatiles in Oxidized Icy Moons and Comets

description: Following spacecraft encounters with comets 67P/C-G and 1P/Halley, it was surprising that O2, expected to be a very minor species in their comas, was observed to outgas at a few percent abundance during their ice sublimation phases. This challenged the direct connection suggested between comets and material in the interstellarmedium(ISM), which exhibits a very low O2/H2O gas-phase abundance, leading to a number of papers suggesting novel sources for O2. Since these eccentrically orbiting comets have lost significant amounts of their evaporating surfaces over their lifetimes, the O2 observed must have been stably trapped down to significant depths in these primordial icy bodies. O2 was seen in the coma by Rosetta, along with other volatiles, long after water ice sublimation began to subside. Here we note that the extensive observations of the icy satellites of Jupiter (Europa, Ganymede, and Callisto) exhibit radiolytic and outgassing processes that provide certain direct parallels to interpretations of recent comet observations. Given that O2 is regularly observed in the atmospheres of icy Jovian satellites, as well as stably trapped as ‘bubbles’ (Johnson & Jesser 1997) in their water ice surfaces, their spectral observations can help constrain the environment in which Jupiter-family and Oort cloud comets formed given that the observed O2/H2O abundances at both types of comets and icy moons are nearly identical. Based on the approximate charged particle radiation required to produce the observed steady-state concentrations of O2, we suggest that comets likely formed in a far more energetic environment than the ISM.While grains can be irradiated for longer timescales in the neutral ISM, small grains are expected to evaporate before significant O2 formation and trapping occurs. Independent of celestial dynamics then, an unknown radiation source, may provide insight to the first population of oxidized water ice grains in the early solar system.
DOI: 10.48577/jpl.22obsv
title: Mars 2020 SHERLOC On-Board Data Processing Algorithms for Improved Mission Operations

description: The Scanning Habitable Environments with Raman & Luminescence for Organics & Chemicals (SHERLOC) instrument on the Mars Perseverance Rover robotic arm is a deep UV Raman and fluorescence mapping spectrometer, generating rich hyperspectral datasets co-located with high resolution con- text images. SHERLOC is equipped with a suite of on-board data processing algorithms, which can be employed to identify regions of interest within a SHERLOC hyperspectral map for immediate follow-up observations of the most astrobiologically interesting targets. Autonomous on-board target selection improves operation efficiency by reducing the number of human decision loops, and potentially decreases the amount of time an abraded surface is exposed to solar UV radiation and arid Martian conditions before SHERLOC makes informed, high resolution measurements, preserving volatiles and potential organics from alteration.In this manuscript, we discuss each of SHERLOC’s on-board data processing algorithms, ground testing, the potential for improved science return, and how surface operations benefit from the implementation of on-board data processing.
DOI: 10.6084/m9.figshare.24964512
title: Check- ID4268

description: Check from Grammarly
DOI: 10.6084/m9.figshare.24964512.v1
title: Check- ID4268

description: Check from Grammarly
DOI: 10.5281/zenodo.10456882
title: Fuzz4All: Universal Fuzzing with Large Language Models

description: Artifact for "Fuzz4All: Universal Fuzzing with Large Language Models" - accepted at ICSE 2024.
DOI: 10.5281/zenodo.10456883
title: Fuzz4All: Universal Fuzzing with Large Language Models

description: Artifact for "Fuzz4All: Universal Fuzzing with Large Language Models" - accepted at ICSE 2024.
DOI: 10.5281/zenodo.10472450
title: Tertiary students' attitude toward practical courses in Ghana: The case of fashion and textiles students at Kumasi Technical University
DOI: 10.5281/zenodo.10472449
title: Tertiary students' attitude toward practical courses in Ghana: The case of fashion and textiles students at Kumasi Technical University
DOI: 10.6084/m9.figshare.24964593
title: Source data for "Nonclassical Near-Field Dynamics of Surface Plasmons"

description: Source data for "Nonclassical Near-Field Dynamics of Surface Plasmons"
DOI: 10.34740/kaggle/dsv/7366210
title: Construction Work Permits, Buenos Aires Argentina
DOI: 10.6084/m9.figshare.22663840
title: Stable carbon isotope composition of land snail shells in Westerlies Asia and Monsoonal Asia: paleoclimate implications

description: This dataset is composed of high-resolution stable carbon isotopic compositions of land snail shells collected from Westerlies Asia and Monsoonal Asia. Table S1 includes sample information. Table S2 comprises stable carbon isotope data of shells collected from north Iran and the Chinese Loess Plateau. Table S3 comprises stable carbon isotope data of land snail fossils collected from the Xifeng section on the Chinese Loess Plateau.
DOI: 10.34740/kaggle/dsv/7366230
title: WallStreetBets 2022
DOI: 10.5281/zenodo.10472435
title: Sequences of mitochondrial and nuclear genetic markers of the deep-sea urchins of the family Pourtalesiidae Agassiz, 1881 (Echinoidea)

description: This dataset contains aligned sequences of four genetic markers, obtained for the sea urchins of the family Pourtalesiidae (genera Pourtalesia and Cystocrepis), putative new family "Ceratophysidae" (genera Ceratophysa, Echinocrepis, Echinogutta, Echinosigra, Helgocystis and Solenocystis), family Calymnidae (genera Rodocystis and Sternopatagus), and family Carnarechinidae (genus Carnarechinus).

1) Pourtalesiidae_COI.fas - alignment of unmodified COI gene partial sequences

2) Pourtalesiidae_12S.fas - alignment of unmodified 12S rRNA gene partial sequences

3) Pourtalesiidae_16S.fas - alignment of unmodified 16S rRNA gene partial sequences

4) Pourtalesiidae_28S.fas - alignment of unmodified 28S rRNA gene partial sequences

5) Pourtalesiidae_concatenated_trimmed.fas - trimmed alignments of all four genetic markers, concatenated in the single dataset

6) Pourtalesiidae_concatenated_trimmed_partition.txt - partitioning scheme for the Pourtalesiidae_concatenated_trimmed.fas

7) Alignment_curation.txt - detailed description of the alignment curation procedure

8) Vouchers and accession numbers.docx - table, containing specimen identifications, voucher numbers and GenBank accession numbers for the sequences, included in the alignments
DOI: 10.5281/zenodo.10472436
title: Sequences of mitochondrial and nuclear genetic markers of the deep-sea urchins of the family Pourtalesiidae Agassiz, 1881 (Echinoidea)

description: This dataset contains aligned sequences of four genetic markers, obtained for the sea urchins of the family Pourtalesiidae (genera Pourtalesia and Cystocrepis), putative new family "Ceratophysidae" (genera Ceratophysa, Echinocrepis, Echinogutta, Echinosigra, Helgocystis and Solenocystis), family Calymnidae (genera Rodocystis and Sternopatagus), and family Carnarechinidae (genus Carnarechinus).

1) Pourtalesiidae_COI.fas - alignment of unmodified COI gene partial sequences

2) Pourtalesiidae_12S.fas - alignment of unmodified 12S rRNA gene partial sequences

3) Pourtalesiidae_16S.fas - alignment of unmodified 16S rRNA gene partial sequences

4) Pourtalesiidae_28S.fas - alignment of unmodified 28S rRNA gene partial sequences

5) Pourtalesiidae_concatenated_trimmed.fas - trimmed alignments of all four genetic markers, concatenated in the single dataset

6) Pourtalesiidae_concatenated_trimmed_partition.txt - partitioning scheme for the Pourtalesiidae_concatenated_trimmed.fas

7) Alignment_curation.txt - detailed description of the alignment curation procedure

8) Vouchers and accession numbers.docx - table, containing specimen identifications, voucher numbers and GenBank accession numbers for the sequences, included in the alignments
DOI: 10.25345/c5rn30j82
title: MassIVE MSV000093795 - Identifying Unexpected Neurotoxicity Drivers with Acetylcholinesterase Inhibition by Virtual Effect-directed Analysis in Nationwide Estuarine Waters
title: Water quality monitoring plays a vital role in achieving the sustainable development goal of clean water. Neurotoxicity is frequently observed in the global aquatic environment. However, a very limited proportion of the effect (~1%) has been explained by the known chemicals of concern. Here, we integrated machine learning, nontargeted analysis, and in vitro biotesting to identify neurotoxic drivers with acetylcholinesterase (AChE) inhibition in estuarine waters along the coastline of China. Machine learning was used as a virtual fractionation tool to reduce the complexity of chemical mixtures, thus guiding nontargeted screening of AChE inhibitors. Ultimately, sixty chemicals with diverse known and presently unknown structures were identified, explaining 82.1% of the observed AChE inhibition in estuarine water samples. Polyunsaturated fatty acids were unexpectedly found as the neurotoxic driver, accounting for 80.5% of the overall effect mainly due to their high occurrence (microgram per liter). The results of this proof-of-concept study demonstrate that our approach enables screening of causative organic pollutants associated with in vitro endpoints for large-scale water quality monitoring.
DOI: 10.25919/dxrb-7t67
title: Parkes observations for project P1207 semester 2023OCTS_03

description: Whether there is a large population of pulsars in the Bulge, millisecond pulsars in particular, is a long-standing problem. We recently carried out a survey of a small region toward the Bulge with the Five-hundred-meter Aperture Spherical Telescope (FAST) and discovered more than 10 pulsar candidates. Four bright pulsar candidates are estimated to have distances larger than 3kpc and are therefore likely located in the Bulge region. Considering the small number of pulsars we know in the Bulge, the determination of spin and astrometric parameters of these pulsars can be important for us to understand the pulsar population in the Bulge. These information can then be used to investigate the origin of Gamma-ray emission and the electron density distribution in the region. Here we propose to carry out confirmation observation of nine pulsar candidates and time those four bright ones (detected with S/N&gt;20, and with distance larger than 3kpc) with Parkes.
DOI: 10.25919/edp9-nh36
title: Parkes observations for project P1183 semester 2023OCTS_05

description: We have detected a total of 48 bursts of FRB 20220529 using the Parkes UWL receiver, with 29 of them detected during full polarization observations. Our previous cooperating observations of FAST and Parkes for FRB 20220529 have revealed significant variations in flux distribution during different active periods. However, only 3 bursts from Parkes have been observed simultaneously with FAST, one of which has the potential to improve the spectrum limits of repeating FRBs by more than an order of magnitude. To further investigate FRB 20220529, we have scheduled regular FAST observations every fortnight, tracking the source for 20 minutes each time. Additionally, we have been granted another 10 hours of FAST time to facilitate simultaneous observations of FRB 20200529 using both the FAST and Parkes telescopes. Therefore, we propose to continue monitoring the source of FRB 20220529 using the Parkes UWL receiver, ensuring high-time resolution and employing full-polarization observations to: (1) detect more bursts using the Parkes UWL receiver, with corresponding simultaneous observations from FAST, in order to obtain robust constraints on the radiation spectrum of repeating FRBs; (2) explore additional clues regarding the active periods of FRB 20220529; (3) study the microstructure of the bursts.
DOI: 10.25919/mps2-xm41
title: Parkes observations for project P1101 semester 2023OCTS_05

description: We propose to continue our fortnightly monitoring of a very active repeater, FRB~190520, with the Parkes UWL system. Our current observations show that FRB~190520 is not only the most active FRB that can be observed with Parkes, but also shows extreme rotation measure (RM) variations and unique behavior at 2 to 3 GHz frequency. This makes UWL the ideal instrument to carry out in-depth studies of this repeating FRB. With this program, we expect to detect a large sample of bursts from FRB~190520, and in collaboration with the FAST telescope, we will study the local environment, emission properties, fluence distributions, and polarisation properties over an extremely wide bandwidth with high sensitivity.
DOI: 10.5281/zenodo.10069182
title: Forest leaf litter beetles of Taiwan: first DNA barcodes and first insight into the fauna

description: Full data published in the paper
DOI: 10.5281/zenodo.10069183
title: Forest leaf litter beetles of Taiwan: first DNA barcodes and first insight into the fauna

description: Full data published in the paper
DOI: 10.6084/m9.figshare.24960702
title: Cross-sectional survey of health literacy among health science students in Singapore

description: Cross-sectional survey of health literacy among health science students in Singapore
DOI: 10.6084/m9.figshare.24960702.v1
title: Cross-sectional survey of health literacy among health science students in Singapore

description: Cross-sectional survey of health literacy among health science students in Singapore
DOI: 10.6084/m9.figshare.24964686
title: Pattern Recognition and Predictive Warning

description: Mechanical, Electrical and Thermal Information on Mechanical Abuse of Batteries under Different Operating Conditions
DOI: 10.5281/zenodo.10472506
title: Very high resolution of Jakarta's urban green space data

description: Very high resolution of Jakarta’s urban green space data was produced using fusion of three different earth observation data (Planet, Sentinel-1 SAR, and Sentinel-2 MSI). Planet data was first transformed into Red Edge Triangulated Vegetation Index (RTVI) and the Red Edge Triangulated Wetness Index (RTWI) spectral indices before classification. Training and testing data were gathered from Google Street View. Two machine learning algorithms were used (Random Forest (RF) and Classification and Regression Tree (CART)) within the Google Earth Engine (GEE) cloud computing platform. To refine the data, Google's Open Building Data was used, the data was accessible through the GEE data catalog.