cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Investigating the chemistry of stars in the Large Magellanic Cloud
Creators: name: Oh, Wei Shen
Publisher: name: The Australian National University
Year: 2024

description: The Large Magellanic Cloud (LMC) is one of the Milky Way's most prominent dwarf galaxy satellites. Positioned within the Milky Way's gravitational influence, the LMC offers a unique opportunity to explore near-field cosmology in the context of stellar evolution, star formation, interstellar medium behaviour, and galaxy evolution. This thesis presents detailed abundance measurements for various elements in stars within the LMC, shedding light on their chemical composition and evolution. The first study presents a search for multiple populations in a 1.95 Gyr old LMC star cluster NGC 1846, which is a direct test of the 2 Gyr minimum boundary for the age of massive star clusters exhibiting chemical abundance spread. High-resolution VLT/FLAMES spectra, complemented by HST photometric data and non-local thermodynamic equilibrium corrections, reveal a lack of intrinsic star-to-star spread in Na and O abundances, implying no evidence of multiple populations in NGC 1846. However, a significant spread in carbon abundances indicates varying evolutionary mixing on the red giant branch. This work enhances our understanding of the existence of multiple populations in intermediate-age massive star clusters in galaxies. The second study presents a search for extremely metal-poor (EMP) stars in the LMC, crucial for unraveling information about the earliest stars and conditions during the initial stages of star formation in dwarf galaxies. Utilising photometric data from SkyMapper DR3 and kinematic data from Gaia DR2, a selection of EMP candidates was made using various photometric and kinematic cuts. A low-resolution spectroscopic follow-up observation was done using ANU 2.3/WiFeS. The study identifies seven stars with [Fe/H] < -2.75, including two with [Fe/H] < -3. The radial velocities of these stars are consistent with the LMC's outer rotation curve, firmly establishing them as members of the LMC. These stars represent the most metal-poor stars discovered in the LMC to date. The third study delves into detailed abundance results for the seven LMC stars mentioned in the previous study. Based on UVES high dispersion spectra, the stars are confirmed as the most metal-poor stars ever found in the Magellanic Clouds. While their element abundance ratios are generally consistent with Milky Way halo stars of similar [Fe/H], only two of the more metal-rich stars in the sample exhibit enhancements in r-process elements. The absence of r-process enrichment in stars with lower [Fe/H] values imply a minimum timescale of ~100 Myr for the neutron star binary merger process to generate substantial r-process enhancements in the LMC. This finding challenges previous results and provides insights into the early stages of star formation in the LMC and galaxies of similar mass. Together, these studies contribute valuable insights into the chemical composition, evolutionary history, and early star formation processes within the LMC, advancing our understanding of stellar and galactic evolution.
Allochthonous and autochthonous carbon in deep, organic-rich and organic-poor lakes of the European Russian subarctic
Creators: name: Chupakov, A.V.
name: Chupakova, A.A.
name: Moreva, O.Yu.
name: Shirokova, L.S.
name: Zabelina, S.A.
name: Vorobieva, T.Y.
name: Klimov, S.I.
name: Brovko, O.S.
name: Pokrovsky, O.S.
Publisher: name: Boreal Environment Research Publishing Board
Year: 2017

description: To reveal the degree of allochthonous vs. autochthonous control on carbon dynamics in deep, boreal lakes, we studied two (one organic-rich and one organic-poor) small (~0.1 km2) and deep (~40 m), seasonally stratified lakes located in the European subarctic zone (NW Russia, Arkhangelsk region) during a 2.5-year period. The dissolved organic and inorganic carbon (DOC and DIC, respectively) concentrations were 15–30 mg l–1 and 0.5–1.9 mg l–1 in the humic lake and 0.8–4.3 mg l–1 and 18–52 mg l–1 in the organic-poor lake, respectively. The DOC profile in the organic-poor lake was sensitive to phytoplankton blooms in July–August and snowmelt in May, whereas the organic-rich lake was a highly stable system throughout the year in both the epilimnion and hypolimnion, with significant (ca. 40%) increase in DOC concentration in the hypolimnion relative to the epilimnion. The ratio of dissolved organic carbon to organic nitrogen (Corg/Norg) was significantly lower in the organic-poor lake, reflecting a strong impact of autochthonous Norg production and N diffusion from the sediment to the water column. There was a clear difference in the vertical pattern of the proportion of the low molecular weight (LMW< 1 kDa) organic carbon (OC) between the humic and the organic-poor lakes. Regardless of season, the organic-poor lake’s LMW< 1 kDa was 40%–90%, whereas that of the organic-rich lake 20%–30%. This difference was most likely linked to the dominance of peat soil and bog providing allochthonous OC to the organic-rich lake throughout the year, and possible production of LMW autochthonous organic ligands by phytoplankton and photodegradation in the organic-poor lake. The important role of allochthonous organic matter (OM) in the color properties of the lake water was confirmed by the light absorbance in the visual range and specific ultraviolet absorption measurements. Overall, deep humic (organic-rich) lakes are expected to be less sensitive to external impacts and possible climate change. The evaluation of both number and depth of humic lakes in the boreal zone is crucial for assessing their CO2 emission and carbon storage potential.
Megachile latita Mitchell, new comb.
Creators: name: Raw, Anthony
Publisher: name: Zenodo
Year: 2002
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Megachilidae
Megachile
Megachile latita

description: latita Mitchell, new comb.
Megachile (Xeromegachile) latita Mitchell 1934: 335 ­336. Female. Type locality: Worland, Wyoming [U.S.A.].
description: Published as part of Raw, Anthony, 2002, New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae), pp. 1-43 in Zootaxa 71 (1) on page 18, DOI: 10.11646/zootaxa.71.1.1, http://zenodo.org/record/155887
Epiphytic lichen distribution and plant leaf heavy metal concentrations in Russian–Norwegian boreal forests influenced by air pollution from nickel-copper smelters
Creators: name: Bjerke, J. W.
name: Tømmervik, H.
name: Finne, T. E.
name: Jensen, H.
name: Lukina, N.
name: Bakkestuen, V.
Publisher: name: Boreal Environment Research Publishing Board
Year: 2006

description: The Norwegian–Russian border area is exposed to air pollution from Russian nickel-copper smelters at Kola Peninsula. An attempt was made to relate distribution and abundance of epiphytic lichens to concentrations of sulphur, nickel and copper in birch and bilberry foliage and soil. Lichen cover showed significant correlation with Ni and Cu concentrations. However, since the deposition patterns of airborne heavy metals and sulphur dioxide (SO2) around the smelters differ, some plots experience low lichen cover, despite low heavy metal concentrations. These plots are affected by relatively high SO2 emissions. Climatic variability within the study area may also play a role in explaining variation in lichen cover. For areas with uniform climate and physiognomy nearer than ca. 20 km from the smelters, Ni concentrations in birch leaves may prove useful for estimating the likelihood for recolonization to take place. The area closest to the smelters presently is much too polluted for lichen recolonization to occur.
Bose-Einstein-condensate source on an optical-grating-based atom chip for quantum sensor applications
Creators: name: Calviac, R.
name: Rouxel, A.
name: Charlot, S.
name: Bourrier, D.
name: Arnoult, A.
name: Monmayrant, A.
name: Gauthier-Lafaye, O.
name: Gauguet, A.
name: Allard, B.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We report the preparation of Bose-Einstein condensates (BECs) by integrating laser cooling with a grating magneto-optical trap (GMOT) and forced evaporation in a magnetic trap on a single chip. This new approach allowed us to produce a $6 \times 10^4$ atom Bose-Einstein condensate of rubidium-87 atoms with a single laser cooling beam. Our results represent a significant advance in the robustness and reliability of cold atom-based inertial sensors, especially for applications in demanding field environments.
Megachile laurita Mitchell, new comb.
Creators: name: Raw, Anthony
Publisher: name: Zenodo
Year: 2002
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Megachilidae
Megachile
Megachile laurita

description: laurita Mitchell, new comb.
Megachile laurita Mitchell 1927b: 115 ­116. Female. Type locality: Umatilla, Oregon [U.S.A.].
Megachile (Derotropis) laurita Mitchell 1936: 160 ­161.
description: Published as part of Raw, Anthony, 2002, New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae), pp. 1-43 in Zootaxa 71 (1) on page 18, DOI: 10.11646/zootaxa.71.1.1, http://zenodo.org/record/155887
Drinking water quality along the distribution network and associated antibiotic resistance in Maun, Botswana
Creators: name: Mashiqa, Oaratwa
Publisher: name: Botswana International University of Science and Technology
Year: 2018
Subjects: Science

description: Abstract

Maintaining the water quality in the distribution system is crucial to supplying safe drinking water to consumers. The main aim of the study was to analyse physicochemical, bacteriological parameters and investigate prevalence of antibiotic resistant bacteria and their antibiotic resistance genes in the drinking water distribution system in Maun, Botswana. Forty-four water samples were collected at different season interval and were tested for chlorine and turbidity and the results showed that in May, September, January and March, turbidity and chlorine measured 1.0 NTU (0.2 mg/L), 1.1 NTU (0.5 mg/L), 1.0 NTU (0.2 mg/L), 2.7 NTU (0.1 mg/L) respectively. The indicator organisms recorded were heterotrophic bacteria (37.7 %), total coliforms (28 %), Faecal streptococci (18.9 %) while Escherichia coli was at 10.4 % and 5 % for unusual isolates. Antibiotic susceptibility tests were performed on 150 isolates, which were tested against 15 different antibiotics using the Kirby-Bauer diffusion test. Ninety-two percent of the isolates were susceptible to at least one antibiotic and only one isolate (121-S5; E. coli) showed resistance to all the antibiotics used. For multi-drug resistance (MAR) patterns, the most prevalent antibiotic resistance pattern observed was AMP-AML-MEL-C-W-RD-TET-PENSTREP. In addition, 92 % of the isolates were susceptible to meropenem followed by gentamicin (88 %) and ciprofloxacin (81 %). The amplified 16S rDNA sequences were successfully used to identify the 10 selected isolates. The presence of targeted ARGs (tetA, tetB, int1, strepB and sul1) for both culture isolates and whole sample genome were established. Moreover, metagenomic analysis confirmed the presence of some pathogenic bacteria such as Mycobacterium tuberculosis, Legonillela sp, Cholera sp, Staphylococcus sp, Sphingosinicella sp. and Pseudomonas sp. In conclusion, the results indicated the occurrence of indicator bacteria and other non-culturable species in the drinking water as the water moves from the treatment plant to lines that feed the consumers. The results also signified the presence of antibiotic resistant bacteria and their resistance genes in the water samples. The data obtained may be thereof useful in monitoring the integrity of the water quality in the distribution network after treatment.
Characteristics of the atmospheric particle formation events observed at a borel forest site in southern Finland
Creators: name: Mäkelä, J. M.
name: Dal Maso, M.
name: Pirjola, L.
name: Keronen, P.
name: Laakso, L.
name: Kulmala, M.
name: Laaksonen, A.
Publisher: name: Boreal Environment Research Publishing Board
Year: 2000

description: We analysed 184 formation events of new atmospheric aerosol particles, observed at a boreal forest site in Hyytiälä, southern Finland. Recognition, selection and classification of the formation events was based on continuous experimental size distribution data for submicron particles from a period 31 January 1996–18 September 1999 (1327 days). The formation events were classified, and their characteristic features such as the starting time and duration of the particle formation, the number of new particles produced, the particle growth rate at the beginning of the formation burst, and the final particle size after the observed 8-hour growth subsequent to formation, were quantified. The formation rate of 3 nm particles, J3, varied in the range 0.001–1 particles cm–3 s–1. The ultrafine particle growth rates varied in the range 1–17 nm h–1. The possible coupling between the apparent formation rate of new particles and their growth rate subsequent to formation was discussed.
Megachile legalis Cresson, new comb.
Creators: name: Raw, Anthony
Publisher: name: Zenodo
Year: 2002
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Megachilidae
Megachile
Megachile legalis

description: legalis Cresson, new comb.
Megachile legalis Cresson 1879: 209. Male. Type locality: Nevada [U.S. A].
Megachile (Xeromegachile) legalis Mitchell 1937a: 338 ­339.
Megachile (Xeromegachile) couleeana Mitchell 1938: 171. Female. Synonymy of Mitchell 1944:
137.
description: Published as part of Raw, Anthony, 2002, New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae), pp. 1-43 in Zootaxa 71 (1) on page 18, DOI: 10.11646/zootaxa.71.1.1, http://zenodo.org/record/155887
Cross-scale covariance for material property prediction
Creators: name: Jasperson, Benjamin A.
name: Nikiforov, Ilia
name: Samanta, Amit
name: Zhou, Fei
name: Tadmor, Ellad B.
name: Lordi, Vincenzo
name: Bulatov, Vasily V.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A simulation can stand its ground against experiment only if its prediction uncertainty is known. The unknown accuracy of interatomic potentials (IPs) is a major source of prediction uncertainty, severely limiting the use of large-scale classical atomistic simulations in a wide range of scientific and engineering applications. Here we explore covariance between predictions of metal plasticity, from 178 large-scale ($\sim 10^8$ atoms) molecular dynamics (MD) simulations, and a variety of indicator properties computed at small-scales ($\leq 10^2$ atoms). All simulations use the same 178 IPs. In a manner similar to statistical studies in public health, we analyze correlations of strength with indicators, identify the best predictor properties, and build a cross-scale ``strength-on-predictors'' regression model. This model is then used to quantify uncertainty over the statistical pool of IPs. Small-scale predictors found to be highly covariant with strength are computed using expensive quantum-accurate calculations and used to predict flow strength, within the uncertainty bounds established in our statistical study.
Wintertime CO2 evolution from a boreal forest ecosystem
Creators: name: Ilvesniemi, H.
name: Kähkönen, M. A.
name: Pumpanen, J.
name: Rannik, Ü.
name: Wittmann, C.
name: Perämäki, M.
name: Keronen, P.
name: Hari, P.
name: Vesala, T.
name: Salkinoja-Salonen, M.
Publisher: name: Boreal Environment Research Publishing Board
Year: 2005

description: We investigated wintertime ecosystem activity and CO2 efflux over three winters (1 November–28 February 1997–2000) in a boreal Scots pine stand in Finland. During the three winters the cumulative wintertime CO2 efflux measured with continuously operating soil chambers directly from the soil surface was between 103 and 144 g m–2, and between 240 and 330 g m–2 when measured by an eddy covariance method or estimated from the soil sample endogenous CO2 production. The flux measured directly from the soil surface is probably an underestimation due to the ice formation within the chamber. Photosynthesis was found to be active also during winter and metabolic activity was found to show extrapolated zero at –5 °C to –10 °C.
Megachile macneilli Mitchell, new comb.
Creators: name: Raw, Anthony
Publisher: name: Zenodo
Year: 2002
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Megachilidae
Megachile
Megachile macneilli

description: macneilli Mitchell, new comb.
Megachile (Xeromegachile) macneilli Mitchell 1957: 24. Male. Type locality: Riverside, California, U.S.A.
description: Published as part of Raw, Anthony, 2002, New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae), pp. 1-43 in Zootaxa 71 (1) on page 18, DOI: 10.11646/zootaxa.71.1.1, http://zenodo.org/record/155887
Superstep wavefield propagation
Creators: name: Nemeth, Tamas
name: Nihei, Kurt
name: Loddoch, Alex
name: Sekar, Anusha
name: Bube, Ken
name: Washbourne, John
name: Decker, Luke
name: Kaplan, Sam
name: Wu, Chunling
name: Shabelansky, Andrey
name: Bader, Milad
name: Cristea, Ovidiu
name: Yin, Ziyi
Publisher: name: arXiv
Year: 2024
Subjects: subject: Geophysics (physics.geo-ph)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: This paper describes how to propagate wavefields for arbitrary numbers of traditional time steps in a single step, called a superstep. We show how to construct operators that accomplish this task for finite-difference time domain schemes, including temporal first-order schemes in isotropic, anisotropic and elastic media, as well as temporal second-order schemes for acoustic media. This task is achieved by implementing a computational tradeoff differing from traditional single step wavefield propagators by precomputing propagator matrices for each model location for k timesteps (a superstep) and using these propagator matrices to advance the wavefield k time steps at once. This tradeoff separates the physics of the propagator matrix computation from the computer science of wavefield propagation and allows each discipline to provide their optimal modular solutions.
Long-Range Quantum Tunneling via Matter Wave
Creators: name: Yang, Yuan-Xing
name: Bai, Si-Yuan
name: An, Jun-Hong
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Quantum tunneling is a quantum phenomenon in which a microscopic object crosses through a potential barrier even if its energy cannot overcome the barrier. A general belief is that tunneling occurs only when the barrier width is comparable to, or smaller than the de Broglie's wavelength of the object. Here, we study the tunneling of an ultracold atom among $N$ far-separated trapping potentials in a state-selective optical lattice and present a mechanism to realize long-range tunneling. We find that, mediated by the propagating matter wave emitted from the atom, coherent tunneling of the atom to the remote lattices occurs as long as bound states are present in the energy spectrum of the system formed by the atom and its matter wave. Going beyond the Markovian approximation, and breaking through the conventional distance constraint, our result opens another avenue to realizing tunneling and gives a guideline to developing tunneling devices.
Southern Baltic sea level extremes: tide gauge data, historic storms and conﬁdence intervals
Creators: name: Hieronymus, M.
name: Hieronymus, F.
Publisher: name: Boreal Environment Research Publishing Board
Year: 2021

description: Knowledge of extreme sea levels is important when planning housing developments and other infrastructure in coastal locations. The natural science basis of such plans are often return level-return period plots derived from tide gauge records that typically stretch from a few decades to a century. Coastal planners, however, often require return levels associated with return periods that are much longer than these tide gauge records in their planning. Moreover, return level estimates are known to be sensitive to outliers and can have significant biases. Here, we quantify different confidence intervals that are applicable to such return level estimates, and discuss their usability for coastal planning in the context of historic data from the Baltic Sea flood in 1872. Two types of commonly used confidence intervals are found to be too narrow to capture a plausible range that includes the 1872 Baltic Sea flood. A parametric bootstrapping method is then introduced, which gives a reasonable range even when this extreme flood is considered.
Megachile manifesta Cresson, new comb.
Creators: name: Raw, Anthony
Publisher: name: Zenodo
Year: 2002
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Megachilidae
Megachile
Megachile manifesta

description: manifesta Cresson, new comb.
Megachile manifesta Cresson 1878: 122. Male. Type locality: Colorado [U.S. A].
Megachile (Xeromegachile) manifesta Mitchell 1937a: 352 ­355.
Megachile chrysothamni Cockerell 1908b: 262. Female. Type locality: Boulder, Colorado [U.S.A.]. Synonymy of Mitchell 1937a: 352.
description: Published as part of Raw, Anthony, 2002, New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae), pp. 1-43 in Zootaxa 71 (1) on pages 18-19, DOI: 10.11646/zootaxa.71.1.1, http://zenodo.org/record/155887
Scaling violation in power corrections to energy correlators from the light-ray OPE
Creators: name: Chen, Hao
name: Monni, Pier Francesco
name: Xu, Zhen
name: Zhu, Hua Xing
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In recent years, energy correlators have emerged as a powerful tool to explore the field theoretic structure of strong interactions at particle colliders. In this Letter we initiate a novel study of the non-perturbative power corrections to the projected $N$-point energy correlators in the limit where the angle between the detectors is small. Using the light-ray operator product expansion (OPE) as a guiding principle, we derive the power corrections in terms of two non-perturbative quantities describing the fragmentation of quarks and gluons. In analogy with their perturbative leading-power counterpart, we show that power corrections obey a classical scaling behavior that is violated at the quantum level. This crucially results in a dependence on the hard scale $Q$ of the problem that is calculable in perturbation theory. Our analytic predictions are successfully tested against Monte Carlo simulations for both lepton and hadron colliders, marking a significant step forward in the understanding of these observables.
description: journal version
The effect of atmospheric circulation on spring arrival of short- and long-distance migratory bird species in Estonia
Creators: name: Palm, V.
name: Sepp, M.
name: Truu, J.
name: Ward, R.D.
name: Leito, A.
Publisher: name: Boreal Environment Research Publishing Board
Year: 2017

description: The aim of this study was to analyse and identify preferred atmospheric circulation conditions for migratory birds during their spring arrival in Estonia (for Tartu and Kuressaare). A total of 47 circulation classifications and 42 common bird species were studied. The analysis identified a clear division of species into two general clusters according to their preferred circulation conditions. Short-distance migrants preferred predominantly cyclonic conditions with winds from the south-west, while for long-distance migrants windless anticyclonic conditions were preferred. The former were also less dependent on circulation than the latter. Short-distance migrants reaching Tartu were more dependent on circulation than those reaching Kuressaare. The classifications created by the methods CAP, CKM and SAN indicated stronger associations with bird arrival than those based on the methods NNW, PXK and SOM. Clear species sub-clusters were identified for the Tartu migrants only, distinguishable in the strength of the dependence on circulation or the preferred circulation conditions.
REVOLUTIONIZING PEDAGOGY: THE TASK-DRIVEN COLLABORATIVE INQUIRY APPROACH IN MODERN EDUCATIONAL TECHNOLOGY INSTRUCTION
Creators: name: Xinyi Wang, Wei Li
Publisher: name: continental
Year: 2024
Subjects: Modern educational technology, Teacher training, Educational informatization, Task-driven teaching, Collaborative inquiry

description: The modern educational technology course, primarily designed for teacher training students, plays a pivotal role in shaping their educational competence and proficiency. A comprehensive understanding and command of modern educational technology profoundly influence their capacity for applying, integrating, and innovating in the context of educational informatization. To optimize the efficacy of modern educational technology instruction, educators must embrace scientific and rational teaching methods, evolve beyond conventional practices, and emphasize task-driven pedagogy. Fostering collaborative inquiry among students serves as a key strategy to facilitate their grasp of contemporary educational theories and models. This approach equips students with a robust foundation of both theoretical knowledge and practical skills, fortifying their readiness for future professional roles. It is imperative for university educators to recognize the paramount value of task-driven and collaborative inquiry methodologies in modern educational technology instruction, coupling them harmoniously with specific course content to elevate the overall quality of pedagogy.
FIZIK-KIMYOVIY USULDA AZNEK FOSFORITLARINI TAHLIL QILISH
Creators: name: Kudiyarova, A.A.
name: Raximova, G.S.
name: Nurmurodov, T.I.
Publisher: name: Zenodo
Year: 2024

description: Fosforitlarning tuzilishi va mineralogik tarkibi ularning reaksion qobiliyatiga va o‘g‘itlardagi samaradorligiga sezilarli ta’sir ko‘rsatadi. Turli xil fosforli o‘g‘itlar turli xil elementlarga ega bo‘lib, bu agronomlarga ma’lum bir tuproq va o‘simliklarning ehtiyojlariga qarab optimal yechimlarni tanlash imkonini beradi [1].
Megachile maurata Mitchell, new comb.
Creators: name: Raw, Anthony
Publisher: name: Zenodo
Year: 2002
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Megachilidae
Megachile
Megachile maurata

description: maurata Mitchell, new comb.
Megachile (Xeromegachile) maurata Mitchell 1937a: 369 ­370. Male. Type locality: Green River (6100 ft), Wyoming [U.S.A.].
description: Published as part of Raw, Anthony, 2002, New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae), pp. 1-43 in Zootaxa 71 (1) on page 19, DOI: 10.11646/zootaxa.71.1.1, http://zenodo.org/record/155887
Baltic Sea wave conditions under climate change scenarios
Creators: name: Groll, N.
name: Grabemann, I.
name: Hünicke, B.
name: Meese, M.
Publisher: name: Boreal Environment Research Publishing Board
Year: 2017

description: Anthropogenic climate change can alter the wind- and sea-ice climate and thus the wave conditions in the Baltic Sea. Here, transient simulations with the 3rd generation wave model WAM under two IPCC AR4 emission scenarios (A1B and B1) and two initial conditions of the forcing atmospheric fields are analyzed for the period 1961–2100. Future changes in the wave climate comprise higher significant wave height for most regions and simulations. Median waves show temporal and spatial consistent changes, whereas extreme waves (99th percentile and maximum) show much more variability in space and among the simulations. These changes in the wave fields result from not only higher wind speeds but also from a shift to more westerly winds, which leads to different fetch and thus to different significant wave height and direction. The multi-decadal and the inter-simulation variability illustrate the uncertainty in the estimation of the climate change signal.
Megachile melanderi Mitchell, new comb.
Creators: name: Raw, Anthony
Publisher: name: Zenodo
Year: 2002
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Megachilidae
Megachile
Megachile melanderi

description: melanderi Mitchell, new comb.
Megachile (Derotropis) melanderi Mitchell 1944: 140 ­141. Female. Type locality: Marfa, Texas [U.S.A.].
description: Published as part of Raw, Anthony, 2002, New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae), pp. 1-43 in Zootaxa 71 (1) on page 19, DOI: 10.11646/zootaxa.71.1.1, http://zenodo.org/record/155887
Megachile micheneri Mitchell, new comb.
Creators: name: Raw, Anthony
Publisher: name: Zenodo
Year: 2002
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Megachilidae
Megachile
Megachile micheneri

description: micheneri Mitchell, new comb.
Megachile (Xeromegachile) micheneri Mitchell 1937a: 373 ­374. Male. Type locality: Northeast Larrimer County, Colorado [U.S.A.].
description: Published as part of Raw, Anthony, 2002, New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae), pp. 1-43 in Zootaxa 71 (1) on page 19, DOI: 10.11646/zootaxa.71.1.1, http://zenodo.org/record/155887
Megachile mojavensis Mitchell, new comb.
Creators: name: Raw, Anthony
Publisher: name: Zenodo
Year: 2002
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Megachilidae
Megachile
Megachile mojavensis

description: mojavensis Mitchell, new comb.
Megachile (Xeromegachile) mojavensis Mitchell 1934: 340. Female. Type locality: Mojave, Kern County, California [U.S.A.].
description: Published as part of Raw, Anthony, 2002, New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae), pp. 1-43 in Zootaxa 71 (1) on page 19, DOI: 10.11646/zootaxa.71.1.1, http://zenodo.org/record/155887
MPEC 2024-L139 : 2024 LO4
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 LO4

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Megachile mucorosa Cockerell, new comb.
Creators: name: Raw, Anthony
Publisher: name: Zenodo
Year: 2002
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Megachilidae
Megachile
Megachile mucorosa

description: mucorosa Cockerell, new comb.
Megachile mucorosa Cockerell 1908b: 265 ­266. Male. Type locality: Boulder, Colorado [U.S.A.].
Megachile (Argyropile) nebraskana Mitchell 1934: 347 ­348. Female. Type locality: War Bonnet Canyon, Sioux County, Nebraska [U.S.A.]. Synonymy of Hurd 1979: 2064.
description: Published as part of Raw, Anthony, 2002, New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae), pp. 1-43 in Zootaxa 71 (1) on page 19, DOI: 10.11646/zootaxa.71.1.1, http://zenodo.org/record/155887
title: Fresa, Frutilla :
title: Directrices para la ejecución del examen de la distinción, la homogeneidad y la estabilidad.
titleType: Subtitle
Creators: name: (:Unas)
Publisher: name: Unknown
Year: 2023

description: La finalidad de estas directrices (“directrices de examen”) es elaborar los principios que figuran en la Introducción General (documento TG/1/3) y sus documentos TGP conexos, con objeto de que sirvan de orientación práctica y detallada para el examen armonizado de la distinción, homogeneidad y estabilidad (DHE) y en particular, para identificar los caracteres apropiados para el examen DHE y producir descripciones armonizadas de variedades.
Megachile nelsoni Mitchell, new comb.
Creators: name: Raw, Anthony
Publisher: name: Zenodo
Year: 2002
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Megachilidae
Megachile
Megachile nelsoni

description: nelsoni Mitchell, new comb.
Megachile (Xeromegachile) nelsoni Mitchell 1937a: 381. Female. Type locality: Boulder, Colorado [U.S.A.].
description: Published as part of Raw, Anthony, 2002, New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae), pp. 1-43 in Zootaxa 71 (1) on page 19, DOI: 10.11646/zootaxa.71.1.1, http://zenodo.org/record/155887
Wigner function method for the Gibbons-Hawking and the Unruh effect
Creators: name: Landau, Ziv
name: Leonhardt, Ulf
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: An observer at rest with the expanding universe experiences some extra noise in the quantum vacuum, and so does an accelerated observer in a vacuum at rest (in Minkowski space). The literature mainly focuses on the ideal cases of exponential expansion (de-Sitter space) or uniform acceleration (Rindler trajectories) or both, but the real cosmic expansion is non-exponential and real accelerations are non-uniform. Here we use the frequency-time Wigner function of vacuum correlations to define time-dependent spectra. We found excellent Planck spectra for a class of realistic cosmological models, but also strongly non-Planckian, negative Wigner functions for a standard scenario testable with laboratory analogues.
The influence of Kola Peninsula, continental European and marine sources on the number concentrations and scattering coefficients of the atmospheric aerosol in Finnish Lapland
Creators: name: Virkkula, A.
name: Hillamo, R.E.
name: Kerminen, V.-M.
name: Stohl, A.
Publisher: name: Boreal Environment Research Publishing Board
Year: 1997

description: Atmospheric aerosols were measured at Sevettijärvi in Finnish Lapland in 1992–1995. The variation of aerosol concentrations in different air masses has been examined. In polluted air from the Kola peninsula particle number concentrations were often > 10000 cm– 3. In marine and continental air mean particle number concentrations were 60–350 cm– 3 and 200–1 120 cm– 3, respectively. They were lower in air from the Arctic Sea than in air from the Norwegian Sea. This is explained by the difference in the natural sulphur emissions and resulting particle production between these two areas. In marine air, the mean scattering coefficient (ssp) at 550 nm was 2–8 x 10– 6 m–1, in continental air 2–3 x 10– 5 m–1, and in pollution plumes < 9 x 10– 5 m–1. The mean backscatter fraction in marine air, continental air and in pollution plumes was 0.13, 0.11, 0.10, respectively. The impact of the air pollution sources in northern Siberia was detected despite the vicinity of Kola peninsula pollution sources.
Topologically Robust Quantum Network Nonlocality
Creators: name: Boreiri, Sadra
name: Krivachy, Tamas
name: Sekatski, Pavel
name: Girardin, Antoine
name: Brunner, Nicolas
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We discuss quantum network Bell nonlocality in a setting where the network structure is not fully known. More concretely, an honest user may trust their local network topology, but not the structure of the rest of the network, involving distant (and potentially dishonest) parties. We demonstrate that quantum network nonlocality can still be demonstrated in such a setting, hence exhibiting topological robustness. Specifically, we present quantum distributions obtained from a simple network that cannot be reproduced by classical models, even when the latter are based on more powerful networks. In particular, we show that in a large ring network, the knowledge of only a small part of the network structure (involving only 2 or 3 neighbouring parties) is enough to guarantee nonlocality over the entire network. This shows that quantum network nonlocality can be extremely robust to changes in the network topology. Moreover, we demonstrate that applications of quantum nonlocality, such as the black-box certification of randomness and entanglement, are also possible in such a setting.
Likely responses to climate change of fish associations in the Laurentian Great Lakes Basin : concepts, methods and findings
Creators: name: Regier, H.A.
name: Lin, P.
name: Ing, K.K.
name: Wichert, G.A.
Publisher: name: Boreal Environment Research Publishing Board
Year: 1996

description: How a water body’s temperature characteristics constrain organisms ecologically has been a continuing focus of interest in limnology and aquatic ecology for over a century now. A number of complementary scientific approaches are reviewed briefly. Progress in assessment of climate change is hampered by the still fragmentary and scattered scientific literature. A number of tentative generalizations are sketched. We expect that climate change of a type consistent with currently available scenarios will have severe consequences for Great Lakes fish and fisheries: in rivers that flow south, east or west and which contain isolated endemic species at the northerly edge of their ranges and which have no opportunity to migrate northwards; and where effects on the aquatic ecosystem of climate change interact synergistically and harmfully, as seems likely, with bad effects of other cultural stresses such as damming and nutrient loading.
Sulphur and nitrogen oxides emissions in Europe and deposition in Finland during the 21st century
Creators: name: Syri, S.
name: Fronzek, S.
name: Karvosenoja, N.
name: Forsius, M.
Publisher: name: Boreal Environment Research Publishing Board
Year: 2004

description: This paper describes the development of European scenarios of sulphur and nitrogen oxide emissions and resulting depositions in Finland during the 21st century, based on the IPCC Special Report on Emissions Scenarios. The work is a part of the FINSKEN project, which aimed at developing consistent long-term scenarios of global change for Finland. The derivation of emission scenarios for European countries and the calculation of environmental loading scenarios based on them presented in this paper is analogous to the estimation of future ground level ozone concentrations within FINSKEN. Global energy scenarios are reflected in changing emission quantities in Europe. Deposition scenarios up to the year 2100 are developed using European and regional deposition models. The impacts of alternative energy futures on emissions and regional air pollution are compared with the plausible impacts of climate change on the transformation and transportation of air pollution, based on the work in the European AIR-CLIM project. The long-term emission scenarios are developed taking into account the recent international emission reduction agreements within the UN/ECE and the EU. Comparisons between IPCC scenarios and European developments indicated that the fossil-intensive IPCC scenarios were pessimistic in their estimates for future sulphur and nitrogen oxides emissions for European regions. In the light of recent air pollution reduction legislation in Europe, increasing sulphur and nitrogen oxides deposition trends for Finland appear unlikely.
Megachile nevadensis Cresson, new comb.
Creators: name: Raw, Anthony
Publisher: name: Zenodo
Year: 2002
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Megachilidae
Megachile
Megachile nevadensis

description: nevadensis Cresson, new comb.
Megachile nevadensis Cresson 1879: 209. Male. Type locality: Nevada [U.S. A].
Megachile (Xeromegachile) nevadensis Hurd 1979: 2064.
description: Published as part of Raw, Anthony, 2002, New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae), pp. 1-43 in Zootaxa 71 (1) on page 19, DOI: 10.11646/zootaxa.71.1.1, http://zenodo.org/record/155887
Megachile oslari Mitchell, new comb.
Creators: name: Raw, Anthony
Publisher: name: Zenodo
Year: 2002
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Megachilidae
Megachile
Megachile oslari

description: oslari Mitchell, new comb.
Megachile (Xeromegachile) oslari Mitchell 1934: 330 ­331. Female. Type locality: Berkeley, Colorado [U.S.A.]).
description: Published as part of Raw, Anthony, 2002, New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae), pp. 1-43 in Zootaxa 71 (1) on page 19, DOI: 10.11646/zootaxa.71.1.1, http://zenodo.org/record/155887
Effects of clear-cutting and site preparation on water quality from a drained Scots pine mire in southern Finland
Creators: name: Nieminen, M.
Publisher: name: Boreal Environment Research Publishing Board
Year: 2003

description: Ditch outflow from four treatment areas on a drained Scots pine mire was sampled for one year before and four years after clear-cutting and different site preparation operations. Ditch-mounding, or excavation of 40–60 cm deep ditches at spacings of 12–15 m in connection with mounding, is currently considered the most reliable site preparation method for drained peatlands in Finland. High leaching rates of suspended solids were detected from the ditch-mounding area, where the ditches reached down into the mineral soil below peat layer. In contrast to clear-cutting + mounding (without ditches) and clear-cutting alone, cutting and ditch-mounding also increased the leaching of ammonium and nitrate. Phosphorus concentrations in ditch outflow following clear-cutting and site preparation increased from areas where peat contents of phosphorus sorbing minerals (aluminium and iron) were low. The study demonstrated that clear-cutting and site preparation can significantly impair water quality from drained low productive pine mires.
Megachile pagosiana Mitchell, new comb.
Creators: name: Raw, Anthony
Publisher: name: Zenodo
Year: 2002
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Megachilidae
Megachile
Megachile pagosiana

description: pagosiana Mitchell, new comb.
Megachile (Xeromegachile) pagosiana Mitchell 1934: 333 ­334. Female. Type locality: Pagosa Springs (about 7200 ft), Colorado [U.S.A.].
description: Published as part of Raw, Anthony, 2002, New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae), pp. 1-43 in Zootaxa 71 (1) on page 19, DOI: 10.11646/zootaxa.71.1.1, http://zenodo.org/record/155887
Growth and size-selective mortality of vendace (Coregonus albula (L.)) and whitefish (C. lavaretus L.) larvae
Creators: name: Urpanen, O.
name: Huuskonen, H.
name: Marjomäki, T. J.
name: Karjalainen, J.
Publisher: name: Boreal Environment Research Publishing Board
Year: 2005

description: Vendace (Coregonus albula (L.)) and whitefish (C. lavaretus L.) larvae were sampled by stratified random sampling design in four Finnish lakes. Otolith microstructure analysis was used to investigate individual age, hatching time and growth rate of newly hatched larvae to reveal possible size-selective mortality during early life. The majority of the larvae hatched during a short period after the ice-off. Significant differences in hatching length between the lakes were found. Growth rate decreased when larvae became larger and the growth rate was slowest in the lake with the highest density of larvae. However, larger larvae were not relatively more abundant after first weeks and thus, size-dependent mortality was not evident. Hence, we observed that mortality of these two coregonid species during the first weeks was rather random in relation to size of the larvae. Overall, the mortality of vendace larvae with smaller hatching length was higher than that of larger whitefish larvae.
The solution to the Black Hole information paradox
Creators: name: Arraut, Ivan
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The information paradox suggests that the black hole loses information when it emits radiation. In this way, the spectrum of radiation corresponds to a mixed (non-pure) quantum state even if the internal state generating the black-hole is expected to be pure in essence. In this paper we propose an argument solving this paradox by understanding the process of spontaneous symmetry breaking when the black-hole selects one among the many possible ground states, emitting then radiation as a consequence of it. Here the particle operator number is the order parameter. This mechanism explains the connection between the density matrix corresponding to the pure state describing the black-hole state and the density matrix describing the spectrum of radiation (mixed quantum state). From this perspective, we can recover the black-hole information from the superposition principle applied to the different possible order parameters (particle number operators).
description: 5 pages
Small-scale variability of the wind field over a typical Scandinavian lake
Creators: name: Venäläinen, A.
name: Sahlgren, V.
name: Podsechin, V.
name: Huttula, T.
Publisher: name: Boreal Environment Research Publishing Board
Year: 2003

description: Lake flow and transport models are largely dependent on the accuracy of the input data like wind forcing. In the current study the WAsP (Wind Atlas Analysis and Application Program) model was used for the calculation of wind conditions on a typical north European lake, lake Längelmävesi-Roine. Lake is relatively small and landscape fragmented. The main objective was to estimate how well the measurement made at one location represented conditions in different parts of the lake. It was found that, due to the influence of orography and surface roughness, the mean wind speed values could at certain locations be about 30% weaker than those at the measurement site. The variation in mean wind direction was small. The results of the study demonstrate that models like WAsP can provide valuable and substantial information and thus the use of wind models can improve the quality of lake model calculations.
Megachile palmensis Mitchell, new comb.
Creators: name: Raw, Anthony
Publisher: name: Zenodo
Year: 2002
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Megachilidae
Megachile
Megachile palmensis

description: palmensis Mitchell, new comb.
Megachile (Xeromegachile) palmensis Mitchell 1934: 317 ­318. Male. Type locality: Palm Springs, California [U.S.A.].
Megachile (Xeromegachile) smithi Mitchell 1934: 337 ­335. Female. Type locality: Palm Springs Canyon, California [U.S.A.]. Synonymy of Mitchell 1937: 35.
description: Published as part of Raw, Anthony, 2002, New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae), pp. 1-43 in Zootaxa 71 (1) on page 19, DOI: 10.11646/zootaxa.71.1.1, http://zenodo.org/record/155887