46 research outputs found
SecureMEMS: Selective Deposition of Energetic Materials
There exists a pressing operational need to secure and control access to high-valued electromechanical systems, and in some cases render them inoperable. Developing a reliable method for depositing energetic materials will allow for the near-seamless integration of electromechanical systems and energetic material, and, in turn, provide the pathway for security and selective destruction that is needed. In this work, piezoelectric inkjet printing was used to selectively deposit energetic materials. Nanothermites, comprising of nanoscale aluminum and nanoscale copper oxide suspended in dimethyl-formamide (DMF), were printed onto silicon wafers, which enabled both thermal and thrust measurements of the decomposing energetic material. Various solids loadings were studied in order to optimize printing characteristics. Going forward, further studies will focus on the plausibility of inkjet printing other energetic materials for the purposes of the degradation of electromechanical systems
Occasional Publications of the Bounds Law Library, Number Five: Commonplace Books of Law: A Selection of Law-Related Notebooks
Occasional Publications of the Bounds Law Library, Number Five contains the transcriptions of five notebooks, one ledger, and one diary as well as critical introductions to each piece and an essay on notebooks in legal culture. Primary sources include: a seventeenth century notebook authored by multiple anonymous persons likely to have been students in the Inns of Courts, Alexander Dorcas\u27 ledger used from 1785 to 1817, George Josiah Sturges Walker\u27s 1826 Litchfield Law School notebook, Thomas K. Jackson\u27s 1871 diary, James Thomas Kirk\u27s notebook used from 1891 to 1916, Jerome T. Fuller\u27s notebook used from 1925 to 1935, and Hugo L. Black\u27s notebook used from 1938 to 1940.https://scholarship.law.ua.edu/occasional_publications/1004/thumbnail.jp
Initial Visible and Mid-IR Characterization of P/2019 LDâ (ATLAS), an Active Transitioning Centaur Among the Trojans, with Hubble, Spitzer, ZTF, Keck, APO and GROWTH Imaging and Spectroscopy
We present visible and mid-infrared imagery and photometry of Jovian co-orbital comet P/2019 LDâ (ATLAS) taken with Hubble Space Telescope/WFC3 on 2020 April 1, Spitzer Space Telescope/IRAC on 2020 January 25, Zwicky Transient Facility between 2019 April 9 and 2019 Nov 8 and the GROWTH telescope network from 2020 May to July, as well as visible spectroscopy from Keck/LRIS on 2020 August 19. Our observations indicate that LDâ has a nucleus with radius 0.2-1.8 km assuming a 0.08 albedo and that the coma is dominated by âŒ100 ÎŒ m-scale dust ejected at âŒ1 m/s speeds with a âŒ1" jet pointing in the SW direction. LDâ experienced a total dust mass loss of âŒ10âž kg and dust mass loss rate of âŒ6 kg/s with AfÏ/cross-section varying between âŒ85 cm/125 kmÂČ and âŒ200 cm/310 kmÂČ between 2019 April 9 and 2019 Nov 8. If the AfÏ/cross-section increase remained constant, it implies that LDâ has remained active since âŒ2018 November when it came within 4.8 au of the Sun, a typical distance for comets to begin sublimation of HâO. From our 4.5 ÎŒm Spitzer observations, we set a limit on CO/COâ gas production of âŒ10ÂČâ·/âŒ10ÂČⶠmol/s. Multiple bandpass photometry of LDâ taken by the GROWTH network measured in a 10,000 km aperture provide color measurements of g-r = 0.59±0.03, r-i = 0.18±0.05, and i-z = 0.01±0.07, colors typical of comets. We set a spectroscopic upper limit to the production of HâO gas of âŒ80 kg/s. Improving the orbital solution for LDâ with our observations, we determine that the long-term orbit of LDâ is that of a typical Jupiter Family Comet having close encounters with Jupiter coming within âŒ0.5 Hill radius in the last âŒ3 y to within 0.8 Hill radius in âŒ9 y and has a 95% chance of being ejected from the Solar System in < 10 Myr
brainlife.io: A decentralized and open source cloud platform to support neuroscience research
Neuroscience research has expanded dramatically over the past 30 years by
advancing standardization and tool development to support rigor and
transparency. Consequently, the complexity of the data pipeline has also
increased, hindering access to FAIR data analysis to portions of the worldwide
research community. brainlife.io was developed to reduce these burdens and
democratize modern neuroscience research across institutions and career levels.
Using community software and hardware infrastructure, the platform provides
open-source data standardization, management, visualization, and processing and
simplifies the data pipeline. brainlife.io automatically tracks the provenance
history of thousands of data objects, supporting simplicity, efficiency, and
transparency in neuroscience research. Here brainlife.io's technology and data
services are described and evaluated for validity, reliability,
reproducibility, replicability, and scientific utility. Using data from 4
modalities and 3,200 participants, we demonstrate that brainlife.io's services
produce outputs that adhere to best practices in modern neuroscience research
Photography-based taxonomy is inadequate, unnecessary, and potentially harmful for biological sciences
The question whether taxonomic descriptions naming new animal species without type specimen(s) deposited in collections should be accepted for publication by scientific journals and allowed by the Code has already been discussed in Zootaxa (Dubois & NemĂ©sio 2007; Donegan 2008, 2009; NemĂ©sio 2009aâb; Dubois 2009; Gentile & Snell 2009; Minelli 2009; Cianferoni & Bartolozzi 2016; Amorim et al. 2016). This question was again raised in a letter supported
by 35 signatories published in the journal Nature (Pape et al. 2016) on 15 September 2016. On 25 September 2016, the following rebuttal (strictly limited to 300 words as per the editorial rules of Nature) was submitted to Nature, which on
18 October 2016 refused to publish it. As we think this problem is a very important one for zoological taxonomy, this text is published here exactly as submitted to Nature, followed by the list of the 493 taxonomists and collection-based
researchers who signed it in the short time span from 20 September to 6 October 2016
brainlife.io: a decentralized and open-source cloud platform to support neuroscience research
Neuroscience is advancing standardization and tool development to support rigor and transparency. Consequently, data pipeline complexity has increased, hindering FAIR (findable, accessible, interoperable and reusable) access. brainlife.io was developed to democratize neuroimaging research. The platform provides data standardization, management, visualization and processing and automatically tracks the provenance history of thousands of data objects. Here, brainlife.io is described and evaluated for validity, reliability, reproducibility, replicability and scientific utility using four data modalities and 3,200 participants
Registered Ship Notes
https://digitalmaine.com/blue_hill_documents/1179/thumbnail.jp