Leveraging the high resolution,sensitivity,and wide frequency coverage of the Atacama Large Millimeter/submillimeter Array(ALMA),the QUARKS survey,standing for“Querying Underlying mechanisms of massive star formation...
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Leveraging the high resolution,sensitivity,and wide frequency coverage of the Atacama Large Millimeter/submillimeter Array(ALMA),the QUARKS survey,standing for“Querying Underlying mechanisms of massive star formation with ALMA-Resolved gas Kinematics and Structures”,is observing 139 massive starforming clumps at ALMA Band 6(λ~1.3 mm).This paper introduces the Atacama Compact Array(ACA)7 m data of the QUARKS survey,describing the ACA observations and data *** multiwavelength data,we provide the first edition of QUARKS atlas,offering insights into the multiscale and multiphase interstellar medium in high-mass star *** ACA 1.3 mm catalog includes 207 continuum sources that are called ACA *** gas kinetic temperatures are estimated using three formaldehyde transitions with a non-LTE radiation transfer model,and the mass and density are derived from a dust emission *** ACA sources are massive(16–84 percentile values of 6–160 M_(⊙)),gravity-dominated(M∝R^(1.1))fragments within massive clumps,with supersonic turbulence(M>1)and embedded star-forming *** find a linear correlation between the masses of the fragments and the massive clumps,with a ratio of 6%between the *** considering fragments as representative of dense gas,the ratio indicates a dense gas fraction(DGF)of 6%,although with a wide scatter ranging from 1%to 10%.If we consider the QUARKS massive clumps to be what is observed at various scales,then the size-independent DGF indicates a self-similar fragmentation or collapsing mode in protocluster *** the ACA data over four orders of magnitude of luminosity-to-mass ratio(L/M),we find that the DGF increases significantly with L/M,which indicates clump evolutionary *** observed a limited fragmentation at the subclump scale,which can be explained by a dynamic global collapse process.
Increasing demand for wearable sensors for multipurpose applications have made it an essential part of our everyday life. In such a scenario; reusability, flexibility, cost effectiveness, and integrability of such sen...
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Increasing demand for wearable sensors for multipurpose applications have made it an essential part of our everyday life. In such a scenario; reusability, flexibility, cost effectiveness, and integrability of such sensors are among the top desirable features. Using our casual clothing as sensors can be one of the most effective ways for various therapeutic, diagnostic, and continuous monitoring functionalities. Conducting yarns, possibly, have the capability to deeply influence the 4th industrial revolution and rule the e-textile based smart wearables for wide range applications. Herein, we present a comparative experimental study of three different capacitive sensor structures for humidity sensing applications. These structures have been explored using conducting yarns having tungsten metal as core conducting materials.
Tailoring morphology and composition of metal organic frameworks (MOF) can improve energy storage by establishing high surface area, large porosity and multiple redox states. Structure directing agents (SDA) is functi...
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Solar steam generation is considered to be a modern technology to resolve the drinking water problem of the globe in the near future. The preparation of highly efficient photothermal materials with long life, environm...
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Solar steam generation is considered to be a modern technology to resolve the drinking water problem of the globe in the near future. The preparation of highly efficient photothermal materials with long life, environmental friendliness, low cost, and the design of the interfacial solar steam generator (ISSG) are the main features of the practical application of ISSG. Herein, we have designed/fabricated a highly efficient polydopamine surface-capped cobalt–tin oxide (PDA@Co3O4–SnO2) heterojunction nanosheets with different ratios of Co3O4–SnO2optimization, coated on hydrophilic cellulose sponges and utilized as the 3D material in solar steam generation. The hydrophilic photothermal sponges demonstrate excellent light-to-heat conversion and salt discharge properties, which act as self-cleaning tools. The 3D sponges were staked to an adjustable height (5 cm), which demonstrated a maximum evaporation rate of 2.26 kg m–2h–1under 1.0 Sun with an energy efficiency of 118.3%. The system was optimized by selecting photothermal materials with excellent hydrophilicity, preventing salt buildup, minimizing heat conduction and radiation, and harnessing environmental energy through an innovative evaporator design. The designed ISSG system is not only cost-effective but has a long life and high efficiency, which have great potential for future practical applications in waste/seawater purification.
Loop-mediated isothermal amplification (LAMP) technology is extensively utilized for the detection of infectious diseases owing to its rapid processing and high sensitivity. Nevertheless, conventional LAMP signaling m...
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The Compton Pair (ComPair) telescope is a prototype that aims to develop the necessary technologies for future medium energy gamma-ray missions and to design, build, and test the prototype in a gamma-ray beam and ball...
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The quest for viable and scalable biofuel sources has been at the forefront of scientific innovation for the past three decades. Due to its rich chemical constituents, microalgal biomass has emerged as a pivotal susta...
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TAROGE-M is a radio antenna array atop ∼ 2.7 km-high Mt. Melbourne in Antarctica for detecting ultra-high energy (UHE, E > 1017 eV) air showers in near-horizontal directions. Besides the detection of cosmic rays a...
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The precise reconstruction of Compton-scatter events is paramount for an imaging medium-energy gamma-ray telescope. The proposed AMEGO-X is enabled by a silicon tracker utilizing AstroPix chips - a pixelated silicon H...
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In this research we developed two triphenylamine (TPA)-linked conjugated microporous polymers (CMPs), TPA-TAB and TPA-TBN, through Suzuki couplings of tris(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)amine (...
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