cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Synthesis and crystal structures of Pb(II) dithiocarbamates complexes: precursors for PbS nanophotocatalyst
Creators: name: Abimbola E. Oluwalana
name: Ajibade, Peter A.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Molecular Biology
subject: Biotechnology
subject: Geology
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Pb(II) complexes of N-ethyl-N-phenyl dithiocarbamate [Pb(EtPhdtc)2] and N-benzylmethyl dithiocarbamate [Pb(BzyMedtc)2] were synthesized and characterized by single crystal X-ray crystallography. The molecular structures of compounds reveal a distorted tetrahedral geometry around the Pb(II) ions. [Pb(EtPhdtc)2] crystalized as a dimeric structure with Pb … Pb and Pb … S interactions while [Pb(BzyMedtc)2] crystallized as monomeric complex with weak C–H interactions. Thermogravimetric analysis of the Pb(II) complexes shows they decomposed to give lead sulphide (PbS). The complexes were thermolysed in oleic acid (OA) at 120°C, 160°C and 200°C to study the influence of temperature on OA capped PbS nanoparticles. Powder X-ray diffraction patterns confirms that the as-prepared PbS are cubic rock salt crystalline phase of PbS. High resolution transmission electron microscopy (HRTEM) micrographs crystallite average size of 2.64 nm for particles prepared at 120°C, 4.12 nm for particles prepared at 160°C, and 1.93 nm for particles prepared at 200°C from [Pb(EtPhdtc)2]. The average crystallite sizes of PbS nanoparticles obtained from [Pb(BzyMedtc)2] are 6.61 nm at 120°C, 13.88 nm at 160°C, and 10.82 nm at 200°C. The as-prepared PbS nanocrystals were used as photocatalyst for the degradation of methylene blue with the highest degradation efficiency of 73.89% recorded for OAPbS1a.
Where does Canada's social science research data live? An evaluation of data disposition
Creators: name: Webster, Peter
Publisher: name: Zenodo
Year: 2018

description: This paper will bring together information from different sources to evaluate the current disposition of Canadian social science and related research data. It will review the more than 20 repositories hosting Canadian social data. Sources of information about Canadian data include the Re3data international data registry and National Research Council Canada Gateway to Research Data, the Canadian Association of Research Libraries Portage project and the Fairsharing data directory, Canadian open government resources, and commercial resources like data.mendeley.com add substantial additional information about Canadian social sciences research data. This review will document the subjects covered, and organizational connections between repositories and the consortia efforts working to coordinate Canadian data collecting. The paper will compare social science repositories to the larger body of data repositories. It will compare government provided data sources, academic, institutional, subject based shared consortia data sources, and publisher based collection data approaches. The paper will outline the considerable progress which is being made in data collection. It will also delineate major issues still to be addressed. Though Canada's data landscape is particular to Canada its course of development and problems will be instructive for other countries developing data services and resources.
Estimates of the magnitude of blending efficiencies in the pacific northwest white wheat industry
Creators: name: Townsend, Terry P.
name: Martin, Michael V.
name: Townsend, Terry P.
name: Martin, Michael V.
Publisher: name: Unknown
Year: 1981
Subjects: Crop Production/Industries
Productivity Analysis

description: The unique nature of the white wheat grading specification and accompanying price discounting schedule creates the opportunity for large Pacific Northwest grain elevator firms to realize returns form white wheat blending. This paper estimates the potential size of these returns for the period 1969 to 1979, assuming optimal blending practices were employed.
One-pot, solvent-free facile stereoselective synthesis of rhodanine–furan hybrids from renewable resources
Creators: name: Sabahi-Agabager, Leila
name: Farough Nasiri
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Molecular Biology
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Hematology

description: In this study, a one-pot, solvent-free stereoselective reaction was started between primary amines, carbon disulfide, ethyl bromoacetate, and furan derivatives derived from sugars at room temperature, which was completed within 10 min to produce rhodanine–furan hybrid molecules in good to high yields. The presence of the chloromethyl group in products derived from chloromethylfurfural (CMF) made it possible for the substitution of other functional groups such as amine group.
Hybrid Coded Replication in LoRa Networks
Creators: name: Sant'Ana, Jean Michel de Souza
name: Hoeller, Arliones
name: Souza, Richard Demo
name: Montejo-Sánchez, Samuel
name: Alves, Hirley
name: Neto, Mario de Noronha
Publisher: name: arXiv
Year: 2020
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Low Power Wide Area Networks (LPWAN) are wireless connectivity solutions for Internet-of-Things (IoT) applications, including industrial automation. Among the several LPWAN technologies, LoRaWAN has been extensively addressed by the research community and the industry. However, the reliability and scalability of LoRaWAN are still uncertain. One of the techniques to increase the reliability of LoRaWAN is message replication, which exploits time diversity. This paper proposes a novel hybrid coded message replication scheme that interleaves simple repetition and a recently proposed coded replication method. We analyze the optimization of the proposed scheme under minimum reliability requirements and show that it enhances the network performance without requiring additional transmit power compared to the competing replication techniques.
description: 9 pages, 4 figures, to be published in IEEE Transactions on Industrial Informatics
A method for estimating the value of transport service attributes
Creators: name: Garrod, P. V.
name: Miklius, W.
name: Garrod, P. V.
name: Miklius, W.
Publisher: name: Unknown
Year: 1981
Subjects: Financial Economics
Public Economics

description: This paper evaluates a method based on a conjoint measurement technique for estimation of value of transport service attributes. The technique uses ordinal rankings of shipper preferences to estimate each shipper's utility or preference function which, in turn, is used to estimate the change in consumer's surplus attributable to a change in service attribute. The method is applied to measure the value of increased sailing frequency in inter-island transportation.
Three loop anomalous dimension of the second moment of the transversity operator in the MSbar and RI' schemes
Creators: name: Gracey, J. A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We compute the anomalous dimension of the second moment of the transversity operator, \barψ σ^{μν} D^ρψ, at three loops in both the MSbar and RI' schemes. As a check on the result we also determine the O(1/N_f) critical exponent of the n-th moment of the transversity operator in d-dimensions in the large N_f expansion and determine leading order information on the n dependence of the anomalous dimension at three and four loops in MSbar. In addition the RI' anomalous dimension of the non-singlet twist-2 operator, \barψ γ^μD^νψ, is also determined.
description: 18 latex pages; additional reference included
Ommatius Wiedemann 1821
Creators: name: Scarbrough, Aubrey G.
name: Perez-Gelabert, Daniel E.
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Asilidae
Ommatius

description: Ommatius Wiedemann
 Remarks. This large, nearly world wide, genus inhabits mostly tropical regions. It is well represented in the Neotropics with 100 varified species now reported. Of these, nearly 1/2 (46) is from the West Indies, with 21 from Hispaniola, largely the Dominican Republic, and the remaining 25 the other islands. We also report the discovery of the male of Ommatius cinnamomeus Scarbrough (1984) and illustrate its terminalia. The genus is distinguished by the pectinate style. Many species prefer tips of bare branches of woody or herbaceous vegetation along margins of sunlit clearings in, paths and roads through forested areas.
description: Published as part of Scarbrough, Aubrey G. & Perez-Gelabert, Daniel E., 2006, A review of the asilid (Diptera) fauna from Hispaniola with six genera new to the island, fifteen new species, and checklist, pp. 1-91 in Zootaxa 1381 on page 46
Increased multivariate association between insomnia and depressive symptomatology after psychotherapy intervention in late-life depression
Creators: name: Haritos, Rafailia
name: Küppers, Vincent
name: Eickhoff, Simon
name: Jessen, Frank
name: Dafsari, Forugh S.
name: Tahmasian, Masoud
Publisher: name: Forschungzentrum Jülich
Year: 2024

description: 27th Conference of the European Sleep Research Society, Seville, Spain, 24 Sep 2024 - 27 Sep 2024
Unveiling the most luminous Lyman-α emitters in the epoch of reionisation
Creators: name: Matthee, Jorryt
name: Sobral, David
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Distant luminous Lyman-alpha emitters are excellent targets for detailed observations of galaxies in the epoch of reionisation. Spatially resolved observations of these galaxies allow us to simultaneously probe the emission from young stars, partially ionised gas in the interstellar medium and to constrain the properties of the surrounding hydrogen in the circumgalactic medium. We review recent results from (spectroscopic) follow-up studies of the rest-frame UV, Lyman-alpha and [CII] emission in luminous galaxies observed ~500 Myr after the Big Bang with ALMA, HST/WFC3 and VLT/X-SHOOTER. These galaxies likely reside in early ionised bubbles and are complex systems, consisting of multiple well separated and resolved components where traces of metals are already present.
description: 5 pages, 3 figures. Proceeding of IAU Symposium #352, 2019, "Uncovering early galaxy evolution in the ALMA and JWST era"
Optimization of simulation models using the box-complex and the modified box-complex algorithms
Creators: name: Harris, Thomas R.
name: Mapp, Harry P.
name: Harris, Thomas R.
name: Mapp, Harry P.
Publisher: name: Unknown
Year: 1981
Subjects: Research Methods/ Statistical Methods

description: Optimizing simulation models may require the use of a nonlinear direct search method such as the Box-Complex algorithm. The Box-Complex has been found to be inefficient in some cases in deriving optimal solutions for simulation models. This paper presents results from a modification of the Box Complex designed to derive more efficiently optimal solutions. The potential efficiency of the Modified Box-Complex is illustrated by using it to solve two problems on which the Box-Complex had been found to be inefficient. The Modified Box-Complex may offer considerable savings in computer time and cost for some problems.
Ring-chain transformation of 4-aroyl-5-phenylamino-2,3-dihydrothiophene-2,3-diones: Facile and efficient synthesis of novel pyrrolo[2,3-c]pyrazol-3(2H)-ones and 1,2-dihydro-5H,6H-pyridazine-5,6-diones
Creators: name: Taghva, Pardis Hafez
name: Kabirifard, Hassan
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences

description: Seven, novel pyrrolo[2,3-c]pyrazol-3(2H)-one and 1,2-dihydro-5H,6H-pyridazine-5,6-dione chromophores were synthesized by the reaction of 4-aroyl-5-phenylamino-2,3-dihydrothiophene-2,3-diones with cyanoacetohydrazide and arylhydrazines such as phenylhydrazine and 4-nitrophenylhydrazine. These derivatives were characterized by elemental analysis, IR, UV-Visible, 1H, 13C NMR and mass spectroscopy. Spectral characteristics of the compounds were studied in four organic solvents of differing polarity.
Potential impacts of MX deployment on ranch management and ranch economics in Nevada and Utah
Creators: name: Torell, Lloyd Allen
name: Baughman, Mike L.
name: Torell, Lloyd Allen
name: Baughman, Mike L.
Publisher: name: Unknown
Year: 1981
Subjects: Production Economics
Land Economics/Use

description: Deployment of the MX Missile System in Nevada and Utah will have significant impacts on the range livestock industries of those states. Direct changes in ranch management and economics will vary depending upon the type of operation impacted, nature of the impact (physical, nonphysical, or both), and the duration of the impact.
Download free geospatial data from open government portal
Creators: name: Pinard, Jean
Publisher: name: Zenodo
Year: 2018

description: The session is an overview of the Federal Government's Open Maps portal. Open Maps provide one-stop access to the Government of Canada's geospatial information. You can search, combine, visualize, and analyze geospatial data. The portal presently makes more then 750 geospatial collections from 14 federal agencies available in one central location. As well, we present the Toporama interactive map, a demonstration of the Geospatial Data Extraction tool, as well as other federal government applications and sources of data that are useful for students, map librarians, and teachers
Evolution of the light-absorption properties of combustion brown carbon aerosols following reaction with nitrate radicals
Creators: name: Zezhen Cheng
name: Khairallah M. Atwi
name: Zhenhong Yu
name: Avery, Anita
name: Fortner, Edward C.
name: Williams, Leah
name: Majluf, Francesca
name: Krechmer, Jordan E.
name: Lambe, Andrew T.
name: Rawad Saleh
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Physiology
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Marine Biology

description: Polycyclic aromatic hydrocarbons (PAHs) are important constituents of brown carbon (BrC) that are subject to atmospheric processing by gas-phase oxidants such as the hydroxyl radical (OH) and the nitrate radical (NO3). While OH oxidation of BrC has been investigated extensively, studies of NO3 oxidation are limited. Here, we generated BrC from the combustion of toluene containing a complex mixture of light-absorbing PAHs and investigated changes in their chemical composition and light-absorption properties following exposure to NO3 in an oxidation flow reactor. Three types of BrC were studied, with varying light-absorption properties that were classified in terms of the imaginary part of the refractive index (k) as: light BrC (k at 532 nm, k532 = 0.008), medium BrC (k532 = 0.026), and dark BrC (k532 = 0.091). Exposure to NO3 led to ∼30% increase in k532 of the light and medium BrC and ∼5% decrease in k532 of the dark BrC. This discrepancy is attributed to two competing effects: 1) addition of chromophoric functional groups by NO3-induced heterogeneous oxidation and 2) condensation of gas-phase PAH + NO3 oxidation products that were less-absorbing than the particulate PAHs. Analysis of the aerosol chemical evolution revealed that effect (2) was more important in the dark BrC experiments. We performed optical calculations to isolate effect (1) and showed that heterogeneous oxidation led to ∼50% increase in k532 for all the BrC types. These results indicate that NO3-induced heterogeneous oxidation darkens some types of atmospheric BrC, which can counterbalance bleaching effects induced by OH oxidation. Copyright © 2020 American Association for Aerosol Research
The surface density of Extremely Red Objects in high-z quasar fields
Creators: name: Wold, M.
name: Armus, L.
name: Neugebauer, G.
name: Jarrett, T. H.
name: Lehnert, M. D.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on a study of the surface density of Extremely Red Objects (EROs) in the fields of 13 radio-loud quasars at 1.8 < z < 3.0 covering a total area of 61.7 sqr arcmin. There is a large variation in the ERO surface density from field to field, and as many as 30--40 % of the fields have roughly 4--5 times more EROs than what is expected from a random distribution. The average surface density exceeds the value found in large random-field surveys by a factor of 2--3, a result which is significant at the >3 sigma level. Hence, it appears that the quasar lines of sight are biassed towards regions of high ERO density. This might be caused by clusters or groups of galaxies physically associated with the quasars. However, an equally likely possibility is that the observed ERO excess is part of overdensities in the ERO population along the line of sight to the quasars. In this case, the non-randomness of quasar fields with respect to EROs may be explained in terms of gravitational lensing.
description: 6 pages, 2 figures, to appear in "Radio galaxies: past, present and future", eds. M. Jarvis et al., Leiden, November 2002
Three-party pure quantum states are determined by two two-party reduced states
Creators: name: Diosi, Lajos
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We can uniquely calculate almost all entangled state vectors of tripartite systems ABC if we know the reduced states of any two bipartite subsystems, e.g., of AB and of BC. We construct the explicit solution.
description: 2pp
Ommatius bastardoanus Scarbrough, In Scarbrough & Perez-Gelabert 2003
Creators: name: Scarbrough, Aubrey G.
name: Perez-Gelabert, Daniel E.
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Asilidae
Ommatius
Ommatius bastardoanus

description: Ommatius bastardoanus Scarbrough
(Table 1)
 Ommatius bastardoanus Scarbrough, In Scarbrough & Perez-Gelabert, 2003: 43. Type locality: Dominican Republic, La Vega province, type: ♂ (USNM).
 New Records. DOMINICAN REPUBLIC: RD-266 Las Abejas, P. N, / Sierra de Bahoruco, Peder - / nales prov., 1,310m, / 18 o 09.011'N 71 o 37.342'W / 11.vii 2004, D.Perez (d/n) (1 ♂, MHND); La Vega prov., P.N. Armando / Bermúdez, La Ciénaga de / Manabao, 19 o 04.022'N 71 o 51. / 849'W, 1183 m, 19.viii.2006, D.Perez, R.Bastardo, B.Hierro (11 ♂, 5 ♀ USNM); RD-250 La Ciénaga – Los / Tablones, P N Armando / Bermúdez, La Vega prov., / 19 o 04.044'N 70 o 51.789'W. / 1,100 – 1,270 m, 17.vii.2004, / D.Perez (d) (6 ♂, 3 ♀, MHND); Republica Dominicana / prov. La Vega, La Sal Reserva / Ć ientifica ÉbanoVerde, 2–3.vii. / 1992, S. Naverro, 225 (1 ♂, IIBZ).
Distribution. Captured in montane forests between 1077 and 1270 mm in elevation during July and August in La Vega and Santiago provinces.
 Remarks. Ommatius bastardoanus is readily recognized by the unique terminalia, especially the somewhat truncate epandrium that bears a short, narrow ventroapical notch. Additionally, the strongly produced sternite 8 with a wide W-shaped apical margin and pyriform spermatheca distinguishes the female (Scarbrough & Perez-Gelabert, 2003). The type series were found in July. Here we extend its distribution to include Pedernales province and the month of August.
description: Published as part of Scarbrough, Aubrey G. & Perez-Gelabert, Daniel E., 2006, A review of the asilid (Diptera) fauna from Hispaniola with six genera new to the island, fifteen new species, and checklist, pp. 1-91 in Zootaxa 1381 on page 46
Elderscape Backyard Oasis : Creating a therapeutic and recreational park space for the elderly in Cangxia Village
Creators: name: Chen, Jingrong
Publisher: name: The University of British Columbia
Year: 2023

description: Population aging has become one of China’s most prominent social problems, especially in some rural areas where the elderly population continues to rise. The project centers on an agricultural site along a river in a typical aging village in southern China. It aims to connect village elders to their surroundings, social networks, and natural environment by utilizing therapeutic landscapes as a link, enabling them to feel more connected to their community. This community will offer horticultural therapy and recreational landscaping for the aging population while inspiring retirees The design attempts to provide recreational landscape and horticulture therapy for the elderly population in Cangxia Village, Fujian Province. The plan aims to create a welcoming and engaging space that fosters a sense of community and purpose among the elderly population in the area, promoting a higher quality of life for all.
Symbiosis or Precarity? Digital Platforms’ Role on Australian Digital-Native Journalism and Their Funding Models
Creators: name: Carson, Andrea
name: Muller, Denis
Publisher: name: La Trobe
Year: 2024
Subjects: classificationCode: 4701
subject: Communication and media studies
classificationCode: 4702
subject: Cultural studies

description: Legacy media outlets, especially newspapers, have confronted significant challenges this century due to the shift of advertising revenues to digital platforms like Facebook and Google. Major events like the Global Financial Crisis (2007–2009) and Covid-19 pandemic intensified the financial strain, resulting in further downsizing and newsroom closures. Despite these difficulties, digital-native journalism has experienced widespread growth globally. This article explores funding models of selected digital-native journalism in Australia, drawing on platform dependency theory to address questions of what role digital technology platforms and nascent regulation have played in shaping the state of digital-native journalism in Australia. Australia’s concentrated media ownership landscape and its introduction of the world-first News Media Bargaining Code (NMBC), provide a unique backdrop to examine the economic and regulatory environment that impacts Australia’s digital-native journalism. Using a case-study approach, the research explores seven diverse digital-native news outlets over six years across three time periods: several years after the Global Financial Crisis (2017), just prior to the Covid-19 pandemic (2020–), and after the introduction of the NMBC (2023). Expert interviews provide insights into the role of digital platforms in shaping digital-only media. The digital native fail rate in this study is high (>40%). But we also find that of those that endure, the most successful placed a premium on building a distinctive brand (often through specialized reporting), adopting a diversified (hybrid) funding model, and growing audience share through trust. Most benefited from regulation in the form of the NMBC to increase newsroom resources, yet were also cautious of platform dependency.
Measuring Changes in the Atmospheric Neutrino Rate Over Gigayear Timescales
Creators: name: Jordan, Johnathon R.
name: Baum, Sebastian
name: Stengel, Patrick
name: Ferrari, Alfredo
name: Morone, Maria Cristina
name: Sala, Paola
name: Spitz, Joshua
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Physics - Experiment (hep-ex)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Measuring the cosmic ray flux over timescales comparable to the age of the solar system, $\sim 4.5\,$Gyr, could provide a new window on the history of the Earth, the solar system, and even our galaxy. We present a technique to indirectly measure the rate of cosmic rays as a function of time using the imprints of atmospheric neutrinos in paleo-detectors, natural minerals which record damage tracks from nuclear recoils. Minerals commonly found on Earth are $\lesssim 1\,$Gyr old, providing the ability to look back across cosmic ray history on timescales of the same order as the age of the solar system. Given a collection of differently aged samples dated with reasonable accuracy, this technique is particularly well-suited to measuring historical changes in the cosmic ray flux at Earth and is broadly applicable in astrophysics and geophysics.
description: Updated to match PRL version; 6 pages, 2 figures
Multi-Phase Galaxy Formation: High Velocity Clouds and the Missing Baryon Problem
Creators: name: Maller, Ariyeh H.
name: Bullock, James S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The standard treatment of cooling in Cold Dark Matter halos assumes that all of the gas within a ``cooling radius'' cools and contracts monolithically to fuel galaxy formation. Here we take into account the expectation that the hot gas in galactic halos is thermally unstable and prone to fragmentation during cooling and show that the implications are more far-reaching than previously expected: allowing multi-phase cooling fundamentally alters expectations about gas infall in halos and naturally explains the bright-end cutoff in the galaxy luminosity function. We argue that cooling should proceed via the formation of high-density, 10^4 K clouds, pressure-confined within a hot gas background. The background medium has a low density, and can survive as a stable corona with a long cooling time. The fraction of baryons contained in the residual hot core grows with halo mass because the cooling density increases, and this leads to an upper-mass limit in quiescent, non-merged galaxies of ~10^11 Msun. In this scenario, galaxy formation is fueled by the infall of pressure-supported clouds. For Milky-Way-size systems, clouds of mass ~ 5x10^6 Msun that formed or merged within the last several Gyrs should still exist as a residual population in the halo, with a total mass in clouds of ~ 2 x 10^10 Msun. The mass of the Milky Way galaxy is explained naturally in this model, and is a factor of two smaller than would result in the standard treatment without feedback. We expect clouds in galactic halos to be ~ 1 kpc in size and to extend ~150 kpc from galactic centers. The predicted properties of clouds match well the observed radial velocities, angular sizes, column densities, and velocity widths of High Velocity Clouds around our Galaxy. The clouds also explain high-ion absorption systems at z<1.
description: 21 pages, 12 figures, MNRAS accepted
Evolution of the Light-absorption Properties of Combustion Brown Carbon Aerosols Following Reaction with Nitrate Radicals
Creators: name: Zezhen Cheng
name: Khairallah M Atwi
name: Zhenhong Yu
name: Avery, Anita
name: Fortner, Edward C.
name: Williams, Leah
name: Majluf, Francesca
name: Krechmer, Jordan E.
name: Lambe, Andrew T.
name: Rawad Saleh
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Physiology
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Marine Biology

description: Polycyclic aromatic hydrocarbons (PAHs) are important constituents of brown carbon (BrC) that are subject to atmospheric processing by gas-phase oxidants such as the hydroxyl radical (OH) and the nitrate radical (NO3). While OH oxidation of BrC has been investigated extensively, studies of NO3 oxidation are limited. Here, we generated BrC containing a complex mixture of light-absorbing PAHs from the combustion of toluene and investigated changes in their chemical composition and light-absorption properties following exposure to NO3 in an oxidation flow reactor. Three types of BrC were studied, with varying light-absorption properties that were classified in terms of the imaginary part of the refractive index (k) as: light BrC (k at 532 nm, k532 = 0.008), medium BrC (k532 = 0.026), and dark BrC (k532 = 0.091). Exposure to NO3 led to ∼30% increase in k532 of the light and medium BrC and ∼5% decrease in k532 of the dark BrC. This discrepancy is attributed to two competing effects: 1) addition of chromophoric functional groups by heterogeneous oxidation and 2) condensation of gas-phase PAH + NO3 oxidation products that were less-absorbing than the particulate PAHs. Analysis of the aerosol chemical evolution revealed that effect (2) was more important in the dark BrC experiments. We performed optical calculations to isolate effect (1) and showed that heterogeneous oxidation led to ∼50% increase in k532 for all the BrC types. These results indicate that NO3-induced heterogeneous oxidation darkens some types of atmospheric BrC, which can counterbalance bleaching effects induced by OH oxidation. Copyright © 2020 American Association for Aerosol Research
X-ray Survey Results on Active Galaxy Physics and Evolution
Creators: name: Brandt, W. N.
name: Alexander, D. M.
name: Bauer, F. E.
name: Vignali, C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This "pedagogical" review describes the key Chandra and XMM-Newton extragalactic surveys to date and details some of their implications for AGN physics and evolution. We additionally highlight two topics of current widespread interest: (1) X-ray constraints on the AGN content of luminous submillimeter galaxies, and (2) the demography and physics of high-redshift (z > 4) AGN as revealed by X-ray observations. Finally, we discuss prospects for future X-ray surveys with Chandra, XMM-Newton, and upcoming missions.
description: 26 pages, in Physics of Active Galactic Nuclei at All Scales, eds. Alloin D., Johnson R., Lira P. (Springer-Verlag, Berlin), version with all figures at http://www.astro.psu.edu/users/niel/papers/papers.html
Estimation of wilderness use functions for California: An analysis of covariance approach
Creators: name: Wetzstein, Michael E.
name: Green, Richard D.
name: Elsner, Gary H.
name: Wetzstein, Michael E.
name: Green, Richard D.
name: Elsner, Gary H.
Publisher: name: Unknown
Year: 1981
Subjects: Environmental Economics and Policy
Demand and Price Analysis

description: The Hotelling-Clawson procedure for estimating the demand for recreation resources assumes only one destination with no close substitutes. Knesset in 1963 states, "One factor which is of particular importance in describing the demand for any single recreation area is the availability of close substitutes." The problem of estimating the demand for wilderness use in California is an example where the availability of close substitutes will influence both the estimation technique and the determinants accounting for wilderness use. Alternative estimation techniques are presented and tested in this paper to account for differences among destinations. The results indicate that then dealing with a multi-area wilderness system assumptions with regard to the structure of the system must be explicitly stated and tested.
Quality of life in New Mexico: implications for public policy
Creators: name: Diemer, Joel A.
name: Harper, Wilmer M.
name: Diemer, Joel A.
name: Harper, Wilmer M.
Publisher: name: Unknown
Year: 1981
Subjects: Public Economics
Community/Rural/Urban Development

description: Preliminary results of a recently completed quality of life survey indicate that New Mexicans are not uniformly satisfied with the quality of their lives. The differences in perceived quality of life by residents of the state's seven planning districts can be related to a variety of physical, social, economic and institutional factors. Some of these factors are the explicit or implicit concerns of public policy and related fiscal activities. This being the case, the value of developing policy oriented measures of quality of life becomes apparent. Welfare weighted quality of life measures which would be of value to decision makers and planners at both the state and regional levels are discussed.
Orbital effect and weak localization physics in the longitudinal magnetoresistance of the Weyl semimetals NbP, NbAs, TaP and TaAs
Creators: name: Naumann, M.
name: Arnold, F.
name: Bachmann, M. D.
name: Modic, K. A.
name: Moll, P. J. W.
name: Süß, V.
name: Schmidt, M.
name: Hassinger, E.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Weyl semimetals such as the TaAs family (TaAs, TaP, NbAs, NbP) host quasiparticle excitations resembling the long sought after Weyl fermions at special band-crossing points in the band structure denoted as Weyl nodes. They are predicted to exhibit a negative longitudinal magnetoresistance (LMR) due to the chiral anomaly if the Fermi energy is sufficiently close to the Weyl points. However, current jetting effects, i.e. current inhomogeneities caused by a strong, field-induced conductivity anisotropy in semimetals, have a similar experimental signature and therefore have hindered a determination of the intrinsic LMR in the TaAs family so far. This work investigates the longitudinal magnetoresistance of all four members of this family along the crystallographic $a$ and $c$ direction. Our samples are of similar quality as those previously studied in the literature and have a similar chemical potential as indicated by matching quantum oscillation (QO) frequencies. Care was taken to ensure homogeneous currents in all measurements. As opposed to previous studies where this was not done, we find a positive LMR that saturates in fields above 4 T in TaP, NbP and NbAs for $B||c$. Using Fermi-surface geometries from band structure calculations that had been confirmed by experiment, we show that this is the behaviour expected from a classical purely orbital effect, independent on the distance of the Weyl node to the Fermi energy. The TaAs family of compounds is the first to show such a simple LMR without apparent influences of scattering anisotropy. In configurations where the orbital effect is small, i.e. for $B||a$ in NbAs and NbP, we find a non-monotonous LMR including regions of negative LMR. We discuss a weak antilocalisation scenario as an alternative interpretation than the chiral anomaly for these results, since it can fully account for the overall field dependence.
Map-a-thons: The Nimble Tents Toolkit approach
Creators: name: Rutkowski, Andy
name: Borovsky, Zoe
name: Yoh Dawano
name: Childress, Dawn
name: Gil, Alex
Publisher: name: Zenodo
Year: 2018

description: In response to Hurricane Maria in the fall of 2017, Columbia University and other universities created a series of map-a-thons that helped on-the-ground relief efforts. Utilizing the infrastructure, skills, and people that are part of digital and data libraries, a set of practical guidelines and how-to has emerged. The resulting "nimble tents toolkit" allows almost anyone, even without a lot of lead-time, to hold their own map-a-thon event. This story is about building community, showing how technology and data transforms lives, and how libraries can become sites for sustained activist and volunteer efforts. The presentation will go over the first set of map-a-thons, how the toolkit emerged, and how it can be deployed by virtually anyone.
Influence of relative humidity on HEPA filters during and after loading with soot particles
Creators: name: Godoy, Charlotte
name: Thomas, Dominique
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Space Science
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Marine Biology

description: One of the most frequently used methods to purify air contaminated by particles, in many industrial processes, is filter media. Although the performance of filter media is relatively well documented under standard conditions (humidity and ambient temperature), few studies are interested in the interaction between moisture and the deposition of particles collected. The proposed study aims to establish the performance of a fibrous media with aerosols composed of nanostructured solid particles (soot) and the influence of relative humidity (RH) on its pressure drop. In a first part, the impact of relative humidity on the mass loading capacity of flat HEPA filter with soot particles during clogging is investigated. In a second part, exposure of filters loaded (at 35% RH) with soot particles by a clean air at relative humidity rate between 50 and 90% is tested. The results show a significant decrease of pressure drop for high relative humidity rate. Knowing soot particles are non-hygroscopic and non-hydrophilic, shows an interesting phenomenon, which could be not link to the nature of the particles. A model has be done with the results obtained. Copyright © 2020 American Association for Aerosol Research
Ommatius cinnamomeus Scarbrough 1984
Creators: name: Scarbrough, Aubrey G.
name: Perez-Gelabert, Daniel E.
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Asilidae
Ommatius
Ommatius cinnamomeus

description: Ommatius cinnamomeus Scarbrough
(Table 1, Figs. 40–44)
 Ommatius cinnamomeus Scarbrough, 1984: 147. Type locality: Haiti, La Hotte, type: ♀ USNM; 1997: 11; Scarbrough & Perez-Gelabert, 2003: 41.
 New records. DOMINICAN REPUBLIC: Independencia prov., 200 m / N. Destacamento Aguacate, / 18 o 19.681' N 71 o 41.830'W, / 1050 m, 12.viii.2006, D. / Perez, R.Bastardo, M.Hierro (1 ♂, 1 ♀, USNM); RD- 264 km 25 rd Cabo Rojo / - Aceitillar, Pedernales prov. / 678 m, 10.vii.2004, D.Perez (1 ♂, USNM); Pedernales [province] 22.5 km / N. Cabo Rojo / 18-06N, 71-38W [10 o 06'N, 71 o 38'W] 540 m ~ 13–19 July 1990 / L. Masner, J.Rawlins, C. Young Deciduous forest: intercept trap (1 ♂, CMNH); Peder / nales [province] 25 km N. Cabo Rojo / 18-06N, 71-38W [10 o 06'N, 71 o 38'W] 730 m / 31 July 1990 J. Rawlins, / C.W.Young, S.Thompson (1 ♀, CMNH).
Distribution. Captured between 60 and 1050 m in elevation in Pedernales and Independencia provinces, Dominican Republic, and the southern peninsula of Haiti.
 Remarks. The male of Ommatius cinnamomeus is distinguished by the large body, dilated anterior margin of the wing, and the combined characters of the male terminalia (Figs. 40–44).
description: Published as part of Scarbrough, Aubrey G. & Perez-Gelabert, Daniel E., 2006, A review of the asilid (Diptera) fauna from Hispaniola with six genera new to the island, fifteen new species, and checklist, pp. 1-91 in Zootaxa 1381 on pages 47-49
Electrochemical synthesis of hydroxy-thioxo-imidazole carboxylates: an experimental and theoretical study
Creators: name: Najoua Sbei
name: Said, Ridha Ben
name: Seyfeddine Rahali
name: Haouas Beya
name: Al-Ayed, Abdullah S.
name: Muneerah Mogren Al Mogren
name: Benkhoud, Mohamed Lamin
name: Mahamadou Seydou
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Space Science
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified

description: We report here the facile synthesis of a new series of hydroxy-thioxo-imidazole carboxylates in good yields using the cyanomethyl anion as an electrogenerated base which is formed when dry acetonitrile is electrolyzed at constant current, followed by addition of different thioureas and diazirine-3,3-dicarboxylate. The mechanism of the reaction, NMR shifts and IR are discussed and compared to density functional theory calculations.
Observatório de desenvolvimento integrado e sustentável
Creators: name: Moraes, Wal
Publisher: name: Zenodo
Year: 2024

description: Apresentação realizada na sessão “O meu Póster em 1 minuto”, da 15ª Conferência Lusófona de Ciência Aberta, na Escola Superior de Enfermagem do Porto (ESEP), de 01 a 04 de outubro de 2024.
The Physics of Supernova Remnant Blast Waves. I. Kinematics of DEM L71 in the Large Magellanic Cloud
Creators: name: Ghavamian, Parviz
name: Rakowski, Cara E.
name: Hughes, John P.
name: Williams, T. B.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results from Fabry-Perot imaging spectroscopy of the Balmer-dominated supernova remnant DEM L71 (0505-67.9) in the LMC. Spectra extracted from the entire circumference of the blast wave reveal the broad and narrow component H-alpha line emission characteristic of non-radiative shocks in partially neutral gas. The new spectra of DEM L71 include portions of the rim that have not been previously observed. We find that the broad component width varies azimuthally along the edge of DEM L71, ranging from 450+/-60 km/s along the eastern edge to values as high as 985 (+210)(-165) km/s along the faint western edge. In part of the faint northern rim the broad component is not detected, possibly indicating a lower density in these regions and/or a broad component width in excess of 1000 km/s. Between the limits of zero and full electron-ion temperature equilibration at the shock front, the allowed range of shock velocities is 430-560 km/s along the east rim and 700-1250 km/s along other parts of the blast wave. The H-alpha broad-to-narrow flux ratios vary considerably around the remnant, ranging from 0.4 to 0.8. These ratios lie below the values predicted by our shock models. We find that narrow component H-alpha emission from a cosmic ray precursor may be the cause of the discrepancy. The least decelerated portions of the blast wave (i.e., regions excluding the brightest filaments) are well characterized by Sedov models with a kinetic energy E_51= (0.37+/-0.06)*D_50**(5/2), where D_50 is the LMC distance in units of 50 kpc. The corresponding age for DEM L71 is (4360+/-290)*D_50 yr. This is the first time that velocity information from the entire blast wave has been utilized to study the global kinematics of a non-radiative SNR at a known distance.
description: 21 pages, including 8 postscript figures and 4 tables, LaTeX, accepted to ApJ; see companion paper
E-COMMERCE EVOLUTION: THE ROLE OF SOCIAL MEDIA IN CHINESE SMES
Creators: name: Chen, Mei Ling
Publisher: name: ZAP journals
Year: 2024
Subjects: Supplier information sharing
Supplier collaboration
Supplier ICT Integration
Supplier value creation an

description: Small and Medium-sized Enterprises (SMEs) constitute the bedrock of China's robust economy, contributing significantly to its social and economic development. Accounting for over 90% of all enterprises, these entities play a pivotal role by contributing 60% to the GDP, generating more than 70% of patents, and employing around 90% of the workforce (Statista, 2021). Leveraging the expansive landscape of China's e-commerce sector, SMEs have strategically embraced and fortified their e-commerce systems, aiming to bolster their income-generating capacities (Statista, 2018).

Nevertheless, the unanticipated and unprecedented challenges posed by the double intertwined and once-in-a-century epidemic have compelled SMEs to confront a new paradigm. The market dynamics are shifting rapidly, marked by evolving and uncertain demands and an accelerated pace of globalization. Information and communication technology are recognized as pivotal factors influencing the sales revenue of SMEs (Bocconcelli et al., 2017). Amid this landscape, social media emerges as a powerful tool, enabling direct interaction between businesses and customers (Alansari et al., 2018). It functions as a dynamic virtual world, facilitating access to reliable and up-to-date information critical for business survival and growth (Tajvidi & Karami, 2021).

The Global Digital Survey (2022) underscores the pervasive influence of social media, with over 4.62 billion global users, constituting 58.4% of the world's population. Facebook, maintaining its dominance, boasts a staggering 2.912 billion monthly users (We Are Social and Hootsuite, 2022). Social media platforms have evolved beyond mere communication channels, transforming into hubs for news consumption. According to the Pew Research Center (2021), 69% of Twitter users in the U.S. rely on the platform as a source of news (Mitchell et al., 2021).

The platform's projected milestone of surpassing 1 billion monthly active users by the end of 2021 underscores its significance in the digital landscape (Iqbal, 2020). In the realm of international e-commerce and internet-based services, the United States and China stand at the forefront, driving innovation and wealth creation. Reports from The United Nations Conference on Trade and Development (UNCTAD) (2021) indicate that China's online retail sales have surged, claiming more than half of the global online retail sales over the past three years and rapidly closing the gap with the United States (UNCTAD, 2021).
Risk efficient farm plans vs. actual producer patterns: cash-crop and crop-livestock systems
Creators: name: Held, Larry J.
name: Zink, Richard A.
name: Held, Larry J.
name: Zink, Richard A.
Publisher: name: Unknown
Year: 1981
Subjects: Risk and Uncertainty
Crop Production/Industries
Livestock Production/Industries

description: MOTAD is used to develop risk efficient farm plans for an irrigated farm in Eastern Wyoming. Compared to a cash-crop system, a crop-livestock system yields higher income and less income variability. Area producers specified a representative farm plan which assumes an intermediate risk-income position, reflecting risk aversion.