cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Dust Destruction by Drift-Induced Sputtering in Active Galactic Nuclei
Creators: name: Tazaki, Ryo
name: Ichikawa, Kohei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent mid-infrared high spatial resolution observations have revealed that active galactic nuclei (AGNs) may host a polar dust region with the size of several pc, and such dust may be carried by radiation from the central engine. The polar dust emission often exhibits very weak or absence of the silicate 10-$μ$m emission feature. A possible explanation is that the polar dust is dominated by micron-sized large grains because these grains do not show the silicate feature, while it remains unclear how large grains are preferentially supplied to the polar region. We here propose a new scenario describing the prevalence of large grains at the polar region. We show that grains are accelerated to the hypersonic drift velocity by the radiation pressure from AGN, and the hypersonic drift results in dust destruction via kinetic sputtering. Sputtering destroys small grains faster than the large ones, and thus larger grains will be preferentially blown over longer distance. Although the hypersonic drift, or kinetic sputtering, tends to be suppressed for very small grains due to the Coulomb drag, they might also be disrupted by Coulomb explosion. Removal of small grains and/or survival of large grains may explain the lack of a silicate 10-$μ$m emission feature in polar dust emission.
description: 17 pages, 14 Figures; Accepted for publication in ApJ
Monitoring the acclimatization of a Chlorella sp. from freshwater to hypersalinity using photosynthetic parameters of pulse amplitude modulated fluorometry
Creators: name: Anandraj, Akash
name: White, Sarah
name: Naidoo, Devashan
name: Mutanda, Taurai
Publisher: name: Mangosuthu University of Technology (MUT)
Year: 2022
Subjects: Biotechnology

description: Contamination of freshwater raceway ponds impedes the commercial cultivation of microalgae. Acclimatization of freshwater microalgae to hypersaline conditions offers a means to reduce contamination. A freshwater Chlorella species was cultured in a gradient of salinities ranging from 5 to 40‰ and pulse amplitude modulated fluorometry recorded photosynthetic functioning. While the average salinity of seawater is 35‰, optimum acclimatization occurred at 20‰, at which point the growth rate (1.6 µg chl a L−1 d−1 ) was not significantly different from the control (1.8 µg chl a L−1 d−1 ). The maximum relative electron transfer rate was lower (9 to 12 µmol m−2 s −1 ) at 5 to 20‰ as compared to 40‰ (28 µmol m−2 s −1 ) where no algal growth was recorded. ATP and NADPH were thus shunted towards synthesis of molecules that offset cytoplasmic osmotic stress. Culturing this Chlorella strain in raceway ponds under saline conditions may reduce contamination and improve productivity
Appendices from Cultural influences on the effects of social norm appeals
Creators: name: Liu, Rain Wuyu
name: Lapinski, Maria Knight
Publisher: name: The Royal Society
Year: 2023
Subjects: classificationCode: 310901
subject: Animal behaviour
classificationCode: 419999
subject: Other environmental sciences not elsewhere classified
classificationCode: 520499
subject: Cognitive and computational psychology not elsewhere classified

description: A: Experiment Scripts, Procedures, and Message Stimuli; B: Results of Measurement Invariance Test; C: Results of Manipulation Checks; D: Moderated Mediation Conceptual Model from PROCESS Macro (Hayes, 2022) Used for Testing Hypotheses in This Paper; E: Robustness checks investigating the effects of key demographic variables, participants’ attitudes toward food waste prevention, message appeals, message believability, cultural context, and group orientations on behavioral intentions.
Tratament Antituberculos personalizat
Creators: name: MUNTEAN, PETRU EMIL
Publisher: name: figshare
Year: 2020
Subjects: Medicine

description: Pacient de sex masculin, în vârstă de 62 de ani, din mediul urban, căsătorit, nefumător, fără antecedente de tuberculoză, este internat în spital pentru următoarele acuze: transpirații profuze nocturne, tuse seacă cronică și pierderea în greutate a șase kilograme în interval de o lună de zile. Analize de laborator: bilirubină directă: 0,25 miligrame per decilitru; bilirubină totală: 0,72 miligrame per decilitru; colesterol: 127 miligrame per decilitru; creatinină: 0,63 miligrame per decilitru; fibrinogen: 548 miligrame per decilitru; fosfatază alcalină: 1322 unități per litru; gama-glutamiltransferaza: 290 unități per litru; glicemie: 83 miligrame per decilitru; leucocite: 15,87 10 ^ 9 / Litri, bazofile: 0,03 10 ^ 9 / Litru, bazofile%: 0,2%, neutrofile: 13,41 10 ^ 9 / Litru, neutrofile%: 84,5%, eozinofile: 0,03 10 ^ 9 / Litru, eozinofile%: 0,2%, limfocite: 1,12 10 ^ 9 / Litru, limfocite%: 7%, monocite: 1,28 10 ^ 9 / Litri, monocite%: 8,1%, eritrocite: 5,89 10 ^ 12 / Litru, hemoglobină: 11,3 grame per decilitru, hematocrit: 35,4%, trombocite: 520 10 ^ 9 / Litru, aspartat aminotransferază: 35 unități per litru; alanin aminotransferază: 71 unități per litru; trigliceride: 112 miligrame per decilitru; uree serică: 22 miligrame per decilitru. Pe radiografia pulmonară se identifică un infiltrat neomogen situat subclavicular stâng (diametru de aproximativ 3 centimetri) și multiplii fibronoduli diseminați perihilar bilateral. Computer tomograf regiune torace: se descriu importante infiltrate nodulare și micronodulare confluate în segmentul anterior al lobului superior stâng, segmentul apicoposterior al lobului superior stâng, segment Fowler bilateral, asociind numeroși micronoduli izolați cu distribuție peribronșică de tip “tree in bud”; periferic, câteva imagini cavitare cu perete gros și contur intern neregulat; multiple alte infiltrate micronodulare cu aspect de tip “tree in bud” în: lobul mediu + inferior drept, segmentul mediobazal + segmentul anterobazal al lobului inferior stâng (cu tendință la confluare); adenopatii paratraheale (11/9 milimetri), adenopatii în fereastra aortopulmonară (9/6 milimetri), adenopatii situate infracarinar (10/5 milimetri), adenopatii hilare bilateral (aproximativ 9/6 milimetri); fără adenopatii axilare sau supraclaviculare; fără acumulări de lichid pleural; lichid în sacul pericardic cu o grosime maximă în decliv de 19 milimetri. Examenul bacteriologic al sputei pentru mycobacterium tuberculosis: microscopie negativă, cultură pozitivă 1+. Antibiogramă: sensibilitate la Hidrazidă și Rifampicină. Testarea pentru infecția cu virusului imunodeficienței umane relevă un rezultat negativ. Pacientul a avut o evoluție favorabilă sub tratamentul antituberculos (caz nou, categoria I de tratament adaptat bineînțeles la greutatea pacientului): Hidrazidă + Rifampicină + Etambutol + Pirazinamidă, zilnic timp de două luni (2 HRZE 7/7), urmate de alte patru luni de Hidrazidă și Rifampicină, administrate de trei ori pe săptămână (4 HR 3/7).
Fertilizer subsidies and how targeting conditions crowding in/out: An assessment of smallholder fertilizer demand in Tanzania
Creators: name: Mather, David
name: Minde, Isaac
name: Mather, David
name: Minde, Isaac
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agricultural and Food Policy
subject: Food Security and Poverty
subject: International Development
subject: Tanzania
subject: fertilizer

description: We use panel data of smallholder farm households from Tanzania to empirically assess a large- scale fertilizer subsidy program in Tanzania with respect to its ability to meet its stated targeting criteria and the effect of subsidy receipt on both smallholder commercial fertilizer demand and total fertilizer use. We find that the majority of subsidy recipients met the targeting criteria in practice in regards to area cultivated to maize and that few of them had used inorganic fertilizer on maize or rice in the previous five years. However, we also find that depending on the year, between 25 to 37% of households receiving a fertilizer voucher did not use it, implying that these households did not gain the experience using fertilizer on maize or rice as envisioned by NAIVS
Acryptolaria operculata Stepanjants 1979
Creators: name: Peña Cantero, Alvaro L.
name: Marques, Antonio C.
name: Migotto, Alvaro E.
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Cnidaria
Hydrozoa
Leptothecata
Lafoeidae
Acryptolaria
Acryptolaria operculata

description: Acryptolaria operculata Stepanjants, 1979
 Acryptolaria operculata: Blanco 1994a, p 162 (non-record; identification key).
 Acryptolaria operculata: Blanco 1994b, p 188 –189 (non-record; reference to other authors).
 Acryptolaria operculata: Blanco et al. 1994, p 10 –12, Figures 7, 8 (non-record; repetition of Stepanjants’ description).
 Acryptolaria operculata: Genzano and Zamponi 1997, p 290 (non-record; list of species).
description: Published as part of Peña Cantero, Alvaro L., Marques, Antonio C. & Migotto, Alvaro E., 2007, Revision of the genus Acryptolaria Norman, 1875 (Cnidaria, Hydrozoa, Lafoeidae), pp. 229-291 in Journal of Natural History 41 (5 - 8) on page 290, DOI: 10.1080/00222930701228132, http://zenodo.org/record/4582056
Unbiased MLMC stochastic gradient-based optimization of Bayesian experimental designs
Creators: name: Goda, Takashi
name: Hironaka, Tomohiko
name: Kitade, Wataru
name: Foster, Adam
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation (stat.CO)
subject: Numerical Analysis (math.NA)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: In this paper we propose an efficient stochastic optimization algorithm to search for Bayesian experimental designs such that the expected information gain is maximized. The gradient of the expected information gain with respect to experimental design parameters is given by a nested expectation, for which the standard Monte Carlo method using a fixed number of inner samples yields a biased estimator. In this paper, applying the idea of randomized multilevel Monte Carlo (MLMC) methods, we introduce an unbiased Monte Carlo estimator for the gradient of the expected information gain with finite expected squared $\ell_2$-norm and finite expected computational cost per sample. Our unbiased estimator can be combined well with stochastic gradient descent algorithms, which results in our proposal of an optimization algorithm to search for an optimal Bayesian experimental design. Numerical experiments confirm that our proposed algorithm works well not only for a simple test problem but also for a more realistic pharmacokinetic problem.
description: major revision, 26 pages, 6 figures
ETAT DES LIEUX ET FACTEURS -CLES POUR UN MEILLEUR ACCES DES PRODUCTEURS MALIENS A LA MECANISATION
STATE OF PLACES AND FACTORS - FOR A BETTER ACCESS OF MALIAN PRODUCERS IN MECHANIZATION
Creators: name: SANOGO, Par Zana Jean-Luc
name: Diallo, Boubacar
name: SANOGO, Par Zana Jean-Luc
name: Diallo, Boubacar
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agricultural and Food Policy
subject: Food Security and Poverty
subject: International Development
subject: Mali

description: Le Mali dispose d’un important potentiel agro- sylvo-pastoral et halieutique mais n’arrive pas à couvrir entièrement ses besoins alimentaires et atteindre un niveau de sé curité alimentaire satisfaisant et durable. Moderniser le secteur agricole en mécanisant/motorisant son agriculture est l’une des priorités poursuivies par le Gouvernement du Mali dans le cadre de sa Loi d’Orientation Agricole pour réussir le passage d’une « agriculture africaine de subsistance » à une agriculture « moderne, commerciale et productive ». La crise alimentaire de 2007 -08 a suscité un intérêt additionnel des décideurs politiques du Mali à investir dans le secteur agricole pour booster la production et parvenir à l’autosuffisance alimentaire. Pour l’obtention d’une augmentation significative de la production agricole les spécialistes s’accordent sur le mérite de la mécanisation agricole dans (1) l’accroissement des superficies et (2) l’intensification accrue de la production agricole.
Stable diffeomorphism groups of 4-manifolds
Creators: name: Szymik, Markus
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics

description: A localisation of the category of n-manifolds is introduced by formally inverting the connected sum construction with a chosen n-manifold Y. On the level of automorphism groups, this leads to the stable diffeomorphism groups of n-manifolds. In dimensions 0 and 2, this is connected to the stable homotopy groups of spheres and the stable mapping class groups of Riemann surfaces. In dimension 4 there are many essentially different candidates for the n-manifold Y to choose from. It is shown that the Bauer--Furuta invariants provide invariants in the case Y = CP^2, which is related to the birational classification of complex surfaces. This will be the case for other Y only after localisation of the target category. In this context, it is shown that the K3-stable Bauer--Furuta invariants determine the S^2xS^2-stable invariants.
description: 24 pages
An integrated set-up for ex vivo characterisation of biaxial murine artery biomechanics under pulsatile conditions - Supplemental Digital Content 1
Creators: name: Bruggen, Myrthe Van Der
name: Reesink, Koen D.
name: Spronck, Paul J.M.
name: Bitsch, Nicole
name: Hameleers, Jeroen
name: Megens, Remco T.A.
name: Schalkwijk, Casper G.
name: Delhaas, Tammo
name: Spronck, Bart
Publisher: name: figshare
Year: 2020
Subjects: subject: 90302 Biomechanical Engineering
subject: FOS: Medical engineering

description: Simulation scheme to characterize differences in phase shifts and amplitude transfers during dynamic pressure-myography testing.
Spin Zero Quantum Relativistic Particles in Einstein Universe
Creators: name: Setare, M. R.
name: Saaidi, Khaled
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this letter we have considered the eigenvalues and eigenfunctions of relativistic massless scalar particle which conformally coupled to the background of Einstein universe. We found the eigenvalues and eigenfunctions exactly.
description: 4 pages, no figure, accepted for publication in International Journal of Theoretical Physics
Characteristic cohomotopy classes for families of 4-manifolds
Creators: name: Szymik, Markus
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics

description: Families of smooth closed oriented 4-manifolds with a complex spin structure are studied by means of a family version of the Bauer--Furuta invariants in the context of parametrised stable homotopy theory, leading to a definition of characteristic cohomotopy classes on Thom spectra associated to the classifying spaces of their complex spin diffeomorphism groups. This is illustrated with mapping tori of such diffeomorphisms and related to the equivariant invariants.
description: 23 pages
Developing Pest Management Strategies for Small Farmers Based on Traditional Knowledge
Creators: name: Altieri, Miguel A.
name: Altieri, Miguel A.
Publisher: name: Unknown
Year: 1984
Subjects: Crop Production/Industries
Farm Management
Teaching/Communication/Extension/Profession

description: For centuries traditional farmers have kept pest damage within acceptable levels by employing a wide variety of cultural practices based on local lore and resources. One such practice is the use of polycultures. Factors involved in pest regulation in polycultures include: increased parasitoid/predator populations, available alternative prey /hosts for natural enemies, decreased colonization and reproduction of pests, feeding inhibition or repellency from non-host plants and prevention of movement and emigration. These elements of natural pest conttol built into small farming systems should be examined, so that the valuable ones are retained in the course of agricultural modernization. Thus, traditional knowledge must be considered to guide changes and attain optimum yields in regions with low-input agriculture. All development approaches should be village-based, with emphasis on self-sufficiency, use of local resources and indigenous agricultural regimes.
Acryptolaria gracilis
Creators: name: Peña Cantero, Alvaro L.
name: Marques, Antonio C.
name: Migotto, Alvaro E.
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Cnidaria
Hydrozoa
Leptothecata
Lafoeidae
Acryptolaria
Acryptolaria gracilis

description: Acryptolaria gracilis (Allman, 1888)
 Cryptolaria gracilis: Farquhar 1896, p 461 (non-record; reference to Allman’s record).
 Cryptolaria gracilis: Hutton 1904, p 320 (non-record).
 Lafoea (Cryptolaria) gracilis: Billard 1906b, p 330 (doubtful record; neither description nor figures. Mazagham, Morocco).
 Lafoea gracilis: Billard 1906c, p 157, 178 [doubtful record; neither description nor figures. Mazagham (5 El Jadida), Morocco, 33 ° 119N, 11 ° 199W, 550 m (5 Acryptolaria conferta minor after Ramil and Vervoort 1992, p 43)].
 Osaealdaria gracilis: Stechow 1923a, p 147 (non-record; change of genus).
 Acryptolaria gracilis: Ralph 1958, p 314, Figure 3 b–d (doubtful record; unspecified locality).
 Acryptolaria gracilis: Patriti 1970, p 30, Figure 34 (same locality as the record by Billard 1906c).
 Acryptolaria gracilis: Dawson 1992, p 15 (non-record).
 Cryptolaria gracilis: Stranks 1993, p 7 (non-record; catalogue).
 Acryptolaria gracilis: Watson and Vervoort 2001, p 157 –159, Figure 4 a–c (doubtful record, considered so by the authors. Clearly different from A. gracilis. Tasmanian seamounts, 44.19– 44.22 ° S, 147.02– 147.05 ° E, 936–1018 m).
 Acryptolaria gracilis: Vervoort and Watson 2003, p 46 –47, Figure 6D, E (non-record; revision of the type material).
description: Published as part of Peña Cantero, Alvaro L., Marques, Antonio C. & Migotto, Alvaro E., 2007, Revision of the genus Acryptolaria Norman, 1875 (Cnidaria, Hydrozoa, Lafoeidae), pp. 229-291 in Journal of Natural History 41 (5 - 8) on pages 288-289, DOI: 10.1080/00222930701228132, http://zenodo.org/record/4582056
An exploration of temporal coherence of light through holography
Creators: name: Escarguel, Alexandre
name: Martin, Céline
Publisher: name: arXiv
Year: 2024
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Abstract The coherence time $τ$ c of light is an important physical parameter in fundamental and applied optics and therefore, it is crucial that students understand its meaning. In this work, this notion is addressed through holography by simple experiments for bachelor and master students at Aix-Marseilles University. The coherence time of light sources used to make holograms is one of the key parameters for the success of such experiments; it must be large enough so that an optical wave train divided in two parts (reference/objects beams) interferes with itself to record the 3D shape of the object on the photosensitive medium. That is why laser sources, with much longer $τ$ c than other light sources, are commonly used to make holograms. We have recently worked with students on this problem; is it possible not to use a laser to make holograms? Which coherence time do we need for which hologram? After a study of the coherence time of different light sources (HeNe laser, red Light-Emitting Diode (LED) with and without 1 nm wide interference filter and high pressure mercury lamp with green filter) by emission spectroscopy and by interferometry, an extremely simple experimental setup is used to realize holograms of a coin with them. The observation of these holograms, coupled to a scan of the coin shape with an optical microscope, enables the deduction of information on the coherence length of these light sources.
Bauer--Furuta invariants and Galois symmetries
Creators: name: Szymik, Markus
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics

description: The Bauer-Furuta invariants of smooth 4-manifolds are investigated from a functorial point of view. This leads to a definition of equivariant Bauer-Furuta invariants for compact Lie group actions. These are studied in Galois covering situations. We show that the ordinary invariants of all quotients are determined by the equivariant invariants of the covering manifold. In the case where the Bauer-Furuta invariants can be identified with the Seiberg-Witten invariants, this implies relations between the invariants in Galois covering situations, and these can be illustrated through elliptic surfaces. It is also explained that the equivariant Bauer--Furuta invariants potentially contain more information than the ordinary invariants.
description: 36 pages
Small Farming Systems in Las Cuevas Watershed, Dominican Republic
Creators: name: Alvarez, J.
name: Hidebrand, P.E.
name: Nova, J.A.
name: Alvarez, J.
name: Hidebrand, P.E.
name: Nova, J.A.
Publisher: name: Unknown
Year: 1984
Subjects: subject: Crop Production/Industries
subject: Farm Management
subject: Institutional and Behavioral Economics
subject: farming systems
subject: crop systems
subject: crop associations
subject: "convite"

description: Farming systems in the watershed are described. Data were gathered by a multi-disciplinary team during the summer of 1982. Sample size was 182. Farming systems identified were (1) irrigated with a rice base, (2) rainfed with an annual crop base and minor permanent crops, and (3) predominantly coffee farms which were not studied in detail. Irrigated farming systems consisted of sole crops of beans, peanuts and maize in addition to rice. Rainfed systems consisted of both sole crops and crop mixtures of beans, maize and pigeon peas. Predominant crop mixtures are beans-maize, beans-pigeon peas, and beans-pigeon peas-maize. Peanuts are predominantly sole cropped. Unique to these systems are: (1) the "convite" system —a social form of labor sharing for harvest; (2) bean trading between rainfed and irrigated systems to maintain fresh seed; (3) peanuts to provide cash; available as a loan from the processing plant. Rainfed systems and increasing population pressures subject the watershed to high rates of soil erosion and resulting siltation downstream.
Supersymmetric Extensions of the Harry Dym Hierarchy
Creators: name: Brunelli, J. C.
name: Das, Ashok
name: Popowicz, Ziemowit
Publisher: name: arXiv
Year: 2003
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the supersymmetric extensions of the Harry Dym hierarchy of equations. We obtain the susy-B extension, the doubly susy-B extension as well as the N=1 and the N=2 supersymmetric extensions for this system. The N=2 supersymmetric extension is particularly interesting, since it leads to new classical integrable systems in the bosonic limit. We prove the integrability of these systems through the bi-Hamiltonian formulation of integrable models and through the Lax description. We also discuss the supersymmetric extension of the Hunter-Zheng equation which belongs to the Harry Dym hierarchy of equations.
description: 15 pages, Latex file
Transverse voltage in zero external magnetic fields, its scaling and violation of the time reversal symmetry in MgB2
Creators: name: Vasek, P.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The longitudinal and transverse voltages (resistances) have been measured for MgB$_2$ in zero external magnetic fields. Samples were prepared in the form of thin film and patterned into the usual Hall bar shape. In close vicinity of the critical temperature T$_c$ non-zero transverse resistance has been observed. Its dependence on the transport current has been also studied. New scaling between transverse and longitudinal resistivities has been observed in the form $ρ{_{xy}}\sim dρ{_{xx}}/dT$. Several models for explanation of the observed transverse resistances and breaking of reciprocity theorem are discussed. One of the most promising explanation is based on the idea of time-reversal symmetry violation.
Mitochondria segmentation - TEM - 2D U-Net - ZeroCostDL4Mic
Creators: name: ZeroCostDL4Mic Team
name: Pape, Constantin
name: DeepImageJ Team
Publisher: name: Zenodo
Year: 2022
Subjects: bioimage.io
bioimage.io:model
zerocostdl4mic
deepimagej
segmentation
tem
unet
isbi2012-challenge
mitochondria
bondary-segmentation
2d

description: Download RDF Package
Visit https://github.com/HenriquesLab/ZeroCostDL4Mic/wiki
description: 2D UNet trained on data from ISBI Challenge for Mitchondria segmentation in Transmission Electron Microscopy images using ZeroCostDL4Mic notebooks. (Uploaded via https://bioimage.io)
Fabrication of nano-structured Titania - Thin-Films on Carbon-coated Nickel sheets
Creators: name: Wunderlich, Wilfried
name: Hue, Nguyen Thi
name: Tanemura, Sakae
Publisher: name: arXiv
Year: 2004
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: This research for Eco-materials focuses on the improvement of photo response of titania thin films. The goal of this research is to find a suitable substrate for decreasing the band-gap of titania, to improve the microstructure and to seek for new processing techniques in nano-meter scale. The sol-gel technique using titanium-tetra-iso-propoxide (TTIP), di-ethanol-amine (DEA) and ethanol was applied by using the dip-coating method. The substrate is a nickel-sheet covered with amorphous carbon-layers or carbon-nano-tubes (CNT), both produced with plasma- enhanced chemical vapor deposition (PECVD) by varying the temperature and the gas molecule velocity. The microstructure of these titania thin films show nanometer-structured pores, which are supposed to decrease the band gap according to the literature. Possible applications for photo catalytic devices will be discussed.
description: 5 pages, 6 figures
Predators and Parasites of Insect Pests on Cantaloupe and Asparagus Bean, St. Croix, U.S. Virgin Islands
Creators: name: Bland, R.G.
name: Knausenberger, W.I.
name: Bland, R.G.
name: Knausenberger, W.I.
Publisher: name: Unknown
Year: 1984
Subjects: subject: Crop Production/Industries
subject: Research and Development/Tech Change/Emerging Technologies
subject: Aphis craccivora
subject: Aphis gossypii
subject: asparagus beans
subject: cantaloupe
subject: cowpea aphid
subject: Diaphania hyalinata
subject: Liriomyza sativae
subject: melon aphid
subject: melonworm
subject: parasites
subject: predators

description: Cantaloupe (Cucumii melo L.) and asparagus beans (Vigna unguiculata subsp. sesqutpedalis [L.J Verde.), were sampled weekly for insect pests and their predators and parasites duting the spring dry season. The three major pests of cantaloupe were melonworms (Diaphania hyalinata L.), melon aphids (Aphis gossypii Glover), and powdery mildew (Erysiphe sp.). Fire ants (Solenopsis geminata F.) became serious secondary pests by tending aphids. All four pests required chemical control. Sytphid, chrysopid, and coccinellid larvae preyed on aphids but these predator populations were very low and developed too slowly to exert significant control. Two ichneumonid, one chalcid, and one tachinid species were reared from melonworm pupae and one of the ichneumonids, Agrypon carihhaeum Bland, occurred in sufficient frequency to consider its use as a biological control agent.
Hard Spectra of X-Ray Pulsars from INTEGRAL Data
Creators: name: Filippova, E. V.
name: Tsygankov, S. S.
name: Lutovinov, A. A.
name: Sunyaev, R. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present spectra for 34 accretion-powered X-ray and one millisecond pulsars that were within the field of view of the INTEGRAL observatory over two years (December 2002 - January 2005) of its in-orbit operation and that were detected by its instruments at a statistically significant level (> 8 sigma in the energy range 18--60 keV). There are seven recently discovered objects of this class among the pulsars studied: 2RXP J130159.6-635806, IGR/AX J16320-4751, IGR J16358-4726, AX J163904-4642, IGR J16465-4507, SAX/IGR J18027-2017 and AX J1841.0-0535. We have also obtained hard X-ray (> 20 keV) spectra for the accretion-powered pulsars A 0114+650, RX J0146.9+6121, AX J1820.5-1434, AX J1841.0-0535 and the millisecond pulsar XTE J1807-294 for the first time. We analyze the evolution of spectral parameters as a function of the intensity of the sources and compare these with the results of previous studies.
description: 33 pages, 2 figures Astronomy Letters, 31, pp. 729 (2005)
Ticking-clock performance enhanced by nonclassical temporal correlations
Creators: name: Budroni, Costantino
name: Vitagliano, Giuseppe
name: Woods, Mischa P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the role of nonclassical temporal correlations in enhancing the performance of ticking clocks in a discrete-time scenario. We show that the problem of optimal models for ticking clocks is related to the violation of Leggett-Garg-type temporal inequalities formulated in terms of, possibly invasive, sequential measurements, but on a system with a bounded memory capacity. Ticking clocks inspire the derivation of a family of temporal inequalities showing a gap between classical and quantum correlations, despite involving no input. We show that quantum ticking-clock models achieving accuracy beyond the classical bound are also those violating Leggett-Garg-type temporal inequalities for finite sequences and we investigate their continuous-time limit. Interestingly, we show that optimal classical clock models in the discrete-time scenario do not have a well-defined continuous-time limit, a feature that is absent in quantum models.
description: 8+12 pages, 5 figures
Testvorstellung: Computeradaptive Leistungsmessung im Bereich naturwissenschaftlichen Denkens
Creators: name: Brüggemann, Volker
name: Nordmeier, Volkhard
Publisher: name: Freie Universität Berlin
Year: 2020
Subjects: subject: Adaptives Testen
subject: Naturwissenschaftliches Denken
subject: Testentwicklung
subject: 500 Naturwissenschaften und Mathematik::530 Physik::530 Physik

description: In den Projekten Ko-WADiS und ValiDiS wurde die Kompetenzentwicklung naturwissenschaftli-chen Denkens bei Lehramtsstudierenden untersucht. Zu diesem Zweck wurde in der ersten Pro-jektphase ein Messinstrument entwickelt und in der zweiten Phase in Bezug auf seinen Einsatz va-lidiert. Da das Instrument zwar valide Messungen ermöglicht, aber im Einsatz sehr zeitaufwändig ist und eine geringe Messgenauigkeit aufweist, wurde eine zweite Version entwickelt: ein compu-teradaptiver Multi-Stage-Test. Dieses Testformat ermöglicht im Vergleich zu papierbasierten In-strumenten kürzere Befragungen bei gleichbleibender Messgenauigkeit. In diesem Beitrag werden die theoretischen Grundlagen adaptiven Testens und das Vorgehen der Testkonstruktion beschrieben. Zusätzlich werden Methodik sowie die Ergebnisse von Simulations-studien und der Pilotierungsstudie des adaptiven Formats zusammengefasst. Im Vergleich beider Versionen konnte eine deutliche Steigerung der Messeffizienz (höhere Messgenauigkeit bei kürze-rer Testzeit) durch die adaptive Testanwendung nachgewiesen werden.
Current Status and Trends in Cabo Verde Agriculture
Creators: name: Monteiro, Filipa
name: Fortes, Arlindo Rodrigues
name: Vladmir Silves Ferreira
name: Anyse Pereira Essoh
name: Gomes, Isildo
name: Correia, Manuel
name: Romeiras, Maria Manuel
Publisher: name: figshare
Year: 2020
Subjects: subject: 70105 Agricultural Systems Analysis and Modelling
subject: FOS: Other agricultural sciences
subject: 70302 Agronomy
subject: FOS: Agriculture, forestry and fisheries

description: With climate change, drought is expected to increase, and its negative impacts will beparticularly important in developing countries, usually with rainfall-dependent agriculture. The CaboVerde archipelago is characterized by limited resources, remoteness, vulnerability to natural disasters,and a fragile environment. In this study, we provide the first report of the current status and trends ofagriculture in Cabo Verde. We present data on the current performance of agricultural productionareas in these islands and discuss them in terms of their most important natural constraint, water. Also,we assess the impact of institutional strategies on crop production and evaluate recent mechanismsthat have been engaged towards agrarian development in this archipelago. Our results show that,among the ten Cabo Verde Islands, Santiago has the largest area used for agriculture (52.5%), followedby Santo Antão (16%) and Fogo (15.8%), and that rainfed farming dominates in all of them. The staplecrops, such as maize and beans, are produced through rainfed subsistence farming, whereas irrigatedcrops (i.e., sugarcane, tomatoes) are mostly grown for commercial purposes. The prolonged droughtperiods, exposure, erosion and soil degradation, which led to increasing desertification over the lastdecades, have been identified as the main constraints to agrarian development across the ten islandsof the archipelago. The strategies of Cabo Verde government to mitigate water scarcity throughsmall-scale irrigation based mainly on small dams and drip irrigation technology have a markedeffect on agricultural production in the predominantly arid and semi-arid areas of this archipelago
Fusion and breakup in the reactions of 6,7Li and 9Be
Creators: name: Hagino, K.
name: Dasgupta, M.
name: Hinde, D. J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We develop a three body classical trajectory Monte Carlo (CTMC) method to dicsuss the effect of the breakup process on heavy-ion fusion reactions induced by weakly bound nuclei. This method follows the classical trajectories of breakup fragments after the breakup takes place, and thus provides an unambiguous separation between complete and incomplete fusion cross sections. Applying this method to the fusion reaction $^{6}$Li + $^{209}$Bi, we find that there is a significant contribution to the total complete fusion cross sections from the process where all the breakup fragments are captured by the target nucleus (i.e., the breakup followed by complete fusion).
description: 4 pages, 3 eps figures. Uses espcrc1.sty. To be published in the proceedings of the 8th international conference on clustering aspects of nuclear structure and dynamics, November 24 - 29, 2003, Nara, Japan (Nucl. Phys. A)
Vagility and Probability of Survival in Two Weevils (Coleoptera, Curculionidae): the sugarcane rootstalk borer weevil (Diaprepes abbreviatus [L.]) and the sweet potato weevil (Cylas formicarius [F.])
Creators: name: Bonnefil, Léonce
name: Bonnefil, Léonce
Publisher: name: Unknown
Year: 1984
Subjects: Crop Production/Industries
Research and Development/Tech Change/Emerging Technologies

description: The sugarcane rootscalk weevil borer Diaprepes abbreviates (L.) moves freely among numerous plant hosts within Puertorican agroecosystems. The sweet potato weevil, on the contrary, appears circumscribed to the family Convolvulaceae. The fecundity, life cycle and longevity of the two insects were probed to unveil the biological nature of vagility. Diaprepes fecundity was greatly enhanced by the shift from wild to cultivated hosts, development was not influenced appreciably, and longevity was greater in the sedentary species. It is assumed that vagile populations are briefly boosted by host shifts even ending in expansion thrusts though longevity is not necessarily extended. Undet sedentary conditions populations are generally low but stable.
Beekeeping in the Caribbean
Creators: name: Breyer, Richard A.
name: Harris, E.
name: Sorhaindo, T.
name: Breyer, Richard A.
name: Harris, E.
name: Sorhaindo, T.
Publisher: name: Unknown
Year: 1984
Subjects: Crop Production/Industries
Teaching/Communication/Extension/Profession

description: The potential for the production of honey and related products for the Caribbean is great. The climate, flora and demand fot an economical, locally produced sweetener provide an ideal setting for expanded production. Start-up and ongoing expenses are minimal compared to most agricultural endeavors. Although management is needed, anyone with a desire can learn the necessary skills. Recently, a technical assistance program between Dominica and Michigan State University catalyzed developments for the industry on that island. Field level Agriculture Extension Agents from the two countries worked together to identify potential producers, provide training, and encourage the development of producer support systems. Such a technical assistance program could be continued with Extension Agents and experienced volunteer beekeepers who would help local beekeepers improve their skills, create new products and reteach other beginning beekeepers. A joint program to pool expertise and interests could be developed and is worth exploring.
Modifications of gravity via differential transformations of field variables
Creators: name: Sheykin, A. A.
name: Solovyev, D. P.
name: Sukhanov, V. V.
name: Paston, S. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss field theories appearing as a result of applying field transformations with derivatives (differential field transformations, DFT) to a known theory. We begin with some simple examples of DFTs to see the basic properties of the procedure. In this process the dynamics of the theory might either change or conserve. After that we concentrate on the theories of gravity which appear as a result of various DFT applied to general relativity, namely the mimetic gravity and Regge-Teitelboim embedding theory. We review main results related to the extension of dynamics in these theories, as well as the possibility to write down the action of a theory after DFT as the action of the original theory before DFT plus an additional term. Such a term usually contains some constraints with Lagrange multipliers and can be interpreted as an action of additional matter, which might be of use in cosmological applications, e.g. for the explanation of the effects of dark matter.
description: 18 pages
Origin of granular axial segregation bands in a rotating tumbler: An interface-mixing driven Rayleigh-Taylor instability
Creators: name: d'Ortona, Umberto
name: Lueptow, Richard
name: Thomas, Nathalie
Publisher: name: arXiv
Year: 2024
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: The origin of large and small particle axial bands in long rotating tumblers is a long-standing question. Using DEM simulations, we show that this axial segregation is due to a Rayleigh-Taylor instability which is characterized by the fact that the density of a granular medium increases with mixing and decreases with segregation. For initially mixed particles, segregation and collisional diffusion in the flowing layer balance and lead to a three-layer system, with a layer of large particles over a layer of small particles, and, interposed between these layers, a layer of more densely packed mixed particles. The higher density mixed particle layer over the lower density small particle layer induces a Rayleigh-Taylor instability, evident as waviness in the interface between the layers. The waviness destabilizes into ascending plumes of small particles and descending plumes of mixed particles with large particles enriched near the surface, which become evident as small and large particle bands visible at the free surface. Rolls driven by segregation at the tilted interface between plumes maintain the pattern of frozen plumes. Published by the American Physical Society 2024
Ab-initio calculations of the Optical band-gap of TiO2 thin films
Creators: name: Wunderlich, Wilfried
name: Miao, Lei
name: Tanemura, Masaki
name: Tanemura, Sakae
name: Jin, Ping
name: Kaneko, Kenji
name: Terai, Asuka
name: Nabatova-Gabin, Nataliya
name: Belkada, Rachid
Publisher: name: arXiv
Year: 2004
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Titanium dioxide has been extensively studied in recent decades for its important photocatalytic application in environmental purification. The search for a method to narrow the optical band-gap of TiO2 plays a key role for enhancing its photocatalytic application. The optical band gap of epitaxial rutile and anatase TiO2 thin films deposited by helicon magnetron sputtering on sapphire and on SrTiO3 substrates was correlated to the lattice constants estimated from HRTEM images and SAED. The optical band-gap of 3.03 eV for bulk-rutile increased for the thin films to 3.37 on sapphire. The band gap of 3.20 eV for bulk-anatase increases to 3.51 on SrTiO3. In order to interpret the optical band gap expansion for both phases, ab-initio calculations were performed using the Vienna ab-initio software. The calculations for rutile as well anatase show an almost linear increase of the band gap width with decreasing volume or increasing lattice constant a. The calculated band gap fits well with the experimental values. The conclusion from these calculations is, in order to achieve a smaller band-gap for both, rutile or anatase, the lattice constants c has to be compressed, and a has to be expanded.
description: 4 pages, 4 figures, 1 table
Etude de la Matiere Organiques des Sols par Fractionnement Granulometrique 1 - Decomposition au Champ d'un Compost Enfoi dans Plusieurs Types de Sols des Antilles
Creators: name: Brossard, M.
name: Balesdent, J.
name: Feller, C.
name: Plenecassagne, A.
name: Turenne, J.F.
name: Brossard, M.
name: Balesdent, J.
name: Feller, C.
name: Plenecassagne, A.
name: Turenne, J.F.
Publisher: name: Unknown
Year: 1984
Subjects: subject: Crop Production/Industries
subject: Research and Development/Tech Change/Emerging Technologies
subject: Matière organique du sol
subject: fractionnement granulométrique
subject: formes humus et azote
subject: venisol
subject: sol fersiallitique,
subject: sol peu évolué sur ponce

description: Les auteurs présement une méthode d'étude de la matière organique du sol qui permet, par granulométrie, de séparer trois fractions végétales et une fraction organo-minérale. Son application à une étude cinétique de la décomposition annuelle d'un compost dans plusieurs types de sols met en évidence que les seules variarions significatives observées concernent les fractions végétales. A titre de comparaison, les autres techniques habituellement utilisées pour l'étude de la matière organique des sols (extractions chimiques ou hydrolyses acides) ne font apparaitre aucune variation significative des formes de l'humus et de l'azore organique.
$p_T$-dependent multiplicity fluctuations from PCA and initial conditions
Creators: name: Gardim, Fernando G.
name: Grassi, Frédérique
name: Ishida, Pedro
name: Luzum, Matthew
name: Ollitrault, Jean-Yves
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present a Principal Component Analysis for a hydrodynamic simulation and compare with CMS experimental data. While the results are reasonable for anisotropic flow, for multiplicity fluctuations they are qualitatively different. We argue that this is due to too large transverse momentum ($p_T$) fluctuations and $N-p_T$ covariance in the simulation than seen experimentally. In turn this is related to too large initial size fluctuations.
Global Superdiffusion of Weak Chaos
Creators: name: Dana, Itzhack
Publisher: name: arXiv
Year: 2003
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: A class of kicked rotors is introduced, exhibiting accelerator-mode islands (AIs) and {\em global} superdiffusion for {\em arbitrarily weak} chaos. The corresponding standard maps are shown to be exactly related to generalized web maps taken modulo an ``oblique cylinder''. Then, in a case that the web-map orbit structure is periodic in the phase plane, the AIs are essentially {\em normal} web islands folded back into the cylinder. As a consequence, chaotic orbits sticking around the AI boundary are accelerated {\em only} when they traverse tiny {\em ``acceleration spots''}. This leads to chaotic flights having a quasiregular {\em steplike} structure. The global weak-chaos superdiffusion is thus basically different in nature from the strong-chaos one in the usual standard and web maps.
description: REVTEX, 4 Figures: fig1.jpg, fig2.ps, fig3.ps, fig4.ps
An Interpretive Examination of the Need and Effectiveness of the Prototypical Nest Eggs Non-Profit Organization in Burundi at the Micro, Mezzo, and Macro Levels
Creators: name: Lind, Milea
Publisher: name: American University (Washington, D.C.)
Year: 2023
Subjects: classificationCode: 35
subject: Commerce, management, tourism and services

description: Description to be added
Professionelle Kompetenzen von Studierenden im ‚Lehramtsmaster mit Profil Quereinstieg‘ im Fach Physik
Creators: name: Ghassemi, Novid
name: Nordmeier, Volkhard
Publisher: name: Freie Universität Berlin
Year: 2020
Subjects: subject: Qualitätsoffensive Lehrerbildung
subject: Quereinstieg
subject: Know how to teach
subject: Master of Education
subject: 500 Naturwissenschaften und Mathematik::530 Physik::530 Physik

description: An der „Qualitätsoffensive Lehrerbildung“ (QLB) ist die Freie Universität Berlin mit dem Projekt „K2teach“ (Know how to teach) beteiligt. Begleitet durch das Teilprojekt „Q-Master: Qualifizierung von Quereinsteiger*innen im Master of Education“ startete im Wintersemester 2016/17 ein Modellstudiengang im Land Berlin, und im Wintersemester 2019/20 wurde bereits die vierte Studienkohorte eingeschrieben. Der Modellversuch verfolgt das Ziel, Quereinsteiger*innen innerhalb eines auf vier Semester ausgelegten Master of Education für den anschließenden Vorbereitungsdienst zu qualifizieren. Ein Teil der Begleitforschung fokussiert exemplarisch auf das Fach Physik. Es werden Unterschiede und Gemeinsamkeiten in der Ausprägung und Entwicklung professioneller Handlungskompetenzen der Q-Masterstudierenden im Vergleich zu regulären Lehramtsstudierenden untersucht. Es werden fachdidaktisches Wissen (FDW), Fachwissen (FW), Überzeugungen (zum Lehren und Lernen im Fach) und Berufswahlmotive quantitativ erhoben. Qualitativ ergänzt wird diese Erhebung durch Leitfadeninterviews zu den Themen Berufswahlmotive und Überzeugungen. Erste Ergebnisse zur Entwicklung des FDW deuten auf einen Wissenszuwachs der Studiereden im Zuge des Lehramtsmasterstudiums hin. Neben der Konzeption des Studiengangs werden erste Ergebnisse der Begleitforschung vorgestellt.
Foliar Analysis as a Diagnostic Technique in Tropical Horticulture
Creators: name: Cahoon, G.A.
name: Cahoon, G.A.
Publisher: name: Unknown
Year: 1984
Subjects: subject: Crop Production/Industries
subject: Research and Development/Tech Change/Emerging Technologies
subject: foliar analysis
subject: plant analysis
subject: leaf analysis
subject: petiole analysis
subject: diagnostic techniques
subject: plant nutrition
subject: nutrient elements

description: A brief history of the development of foliar analysis as a diagnostic technique for horticultural crops is reviewed and discussed. Terminology, together with a basic discussion of the components necessary to operate a successful foliar analysis program for growers, is presented. Some standard values, as they relate to 'normal' growth of selected tropical and sub-tropical horticultural crops, are listed.