cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Farmers’ preference for bundled input-output markets and implications for adapted dairy hubs in Tanzania – a choice experiment
Creators: name: Rao, E.J.O.
name: Mtimet, N.
name: Twine, E.
name: Baltenweck, I.
name: Omore, A.
name: Rao, E.J.O.
name: Mtimet, N.
name: Twine, E.
name: Baltenweck, I.
name: Omore, A.
Publisher: name: Unknown
Year: 2016
Subjects: subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: Research and Development/Tech Change/Emerging Technologies

description: Dairy business hubs present opportunities for efficiently linking farmers to input and output markets. Yet participation by smallholder dairy farmers in these hubs will only be realized if the hub options are adapted to fit the needs of farmers. In this study we have analyzed preference for dairy business hubs in Tanzania where ILRI is currently implementing adapted hub options. Using survey data from smallholder dairy producers from Tanga and Morogoro and applying the choice experiment method we find significant preference for hub options with higher milk prices and payment for milk on a fortnight rather than cash basis. Farmers also prefer hub options that bundle milk marketing with input provision. For bundled inputs, smallholder dairy farmers prefer hub options that allow payment for such inputs via credit or check-off rather than cash. Our analyses also reveal significant heterogeneity in preference among farmers hence the need for advanced analytical approaches that can handle such heterogeneity. Emerging dairy hubs in Tanzania should be supported to either establish in-house input provision arrangements or to enter into contracts with major agro-input dealers in their environs.
New cytotoxic ergosterols from a plant-associated fungus Colletotrichum magnisporum
Creators: name: Hao, Yanqi
name: Wei, Lan
name: Li, Li
name: Wang, Yanlei
name: Li, Ning
name: Pan, Yingni
name: Sun, Yi
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Cancer

description: Three new ergosterols, colletosterols A-C (1–3), together with two known analogues 4 and 5, were isolated from the endophytic fungus Colletotrichum magnisporum associated with the leaves of Rauvolfia verticillata by a bioassay-guided fractionation method. The new structures were elucidated on the basis of extensive spectroscopic analyses and electronic circular dichroism (ECD) calculations. All the ergosterols were evaluated for their cytotoxic activities against A549 and HeLa cell lines. Compounds 1–3 exhibited notable cytotoxicity with the IC50 values of 3.76–11.18 μM.
Impacts of improved sorghum varieties on farm families in Mali: A Multivalued Treatment Effects approach
Creators: name: Assima, Amidou
name: Smale, Melinda
name: Kergna, Alpha
name: Assima, Amidou
name: Smale, Melinda
name: Kergna, Alpha
Publisher: name: Unknown
Year: 2016
Subjects: Crop Production/Industries
Research and Development/Tech Change/Emerging Technologies

description: Uptake of improved sorghum seed in Mali remains relatively limited, despite the economic importance of the crop. We first explore the adoption by Malian farm families of improved sorghum seed, differentiating between improved varieties and recently released sorghum hybrids, which are based largely on local Guinea materials developed through participatory, on-farm testing. We then examine impacts on farm families with a multivalued treatment effects model. Analysis is based on primary data collected from 628 farm families in the Sudanian Savanna. Reflecting the social organization of production in this region, we test the role of plot manager characteristics (including relationship to household head) as determinants of use. Given that farm family enterprises both consume and sell their sorghum harvests, we consider effects on consumption outcomes as well as yield. We find that plot manager characteristics, in addition to household wealth and labor supply, influence the use of improved varieties. The impact of hybrid use on yields is large and significant, positively affecting household dietary diversity and contributing to a greater share of the harvest sold. However, use of hybrids, as well as improved varieties, is associated with a shift toward 2 consumption of other cereals. Findings support on-farm experimental evidence concerning yield advantages, and suggest that encouraging the use of well-adapted sorghum hybrids may contribute to crop commercialization by smallholders.
Solitons and deformed lattices I
Creators: name: Hartmann, Betti
name: Zakrzewski, Wojtek J.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Condensed Matter (cond-mat)
subject: High Energy Physics - Theory (hep-th)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We study a model describing some aspects of the dynamics of biopolymers. The models involve either one or two finite chains with a number N of sites that represent the "units" of a biophysical system. The mechanical degrees of freedom of these chains are coupled to the internal degrees of freedom through position dependent excitation transfer functions. We reconsider the case of the one chain model discussed by Mingaleev et al. and present new results concerning the soliton sector of this model. We also give new (preliminary) results in the two chain model in which case we have introduced an interaction potential inspired by the Morse potential.
description: 12 Latex pages, 7 PS-figures; introduction extended; figure added, new results added
Cities and Agricultural Transformation in Africa: Evidence from Ethiopia
Creators: name: Vandercasteelen, Joachim
name: Tamru, Seneshaw
name: Minten, Bart
name: Swinnen, Johan
name: Vandercasteelen, Joachim
name: Tamru, Seneshaw
name: Minten, Bart
name: Swinnen, Johan
Publisher: name: Unknown
Year: 2016
Subjects: subject: Community/Rural/Urban Development
subject: Crop Production/Industries
subject: Agricultural Transformation
subject: Crop Intensification
subject: Urbanization
subject: Cities
subject: Ethiopia
subject: Sub Saharan Africa

description: Due to the rapid growth of cities in Africa, a larger number of farmers is living in the rural hinterland providing food to urban residents. However, empirical evidence on how urbanization affects these farmers is scarce. To fill this gap, this paper explores the relationship between proximity to a city and the production behavior of rural staple crop producers. More in particular, we analyze unique data from teff producing farmers in major producing areas around Addis Ababa, the Ethiopian capital. We find that farmers more closely located to Addis Ababa face higher wages and land rental prices, but because they receive higher teff prices they have better incentives to intensify production. Moreover, we observe that modern input use, land and labor productivity, and profitability in teff production improve with urban proximity. There is a strong and significant direct effect of urban proximity, which is suggested to be related with more use of formal factor markets, less transaction costs, and better access to information. In contrast, we do not find strong and positive relationships of rural population density increases - as an alternative source of agricultural transformation - as they seem to lead to immiserizing effects in these settings. Our results show that urban proximity should be considered as an important determinant of the process of agricultural intensification and transformation in developing countries.
Comparison of hadronic rescattering calculations of elliptic flow and HBT with measurements from RHIC
Creators: name: Humanic, T. J.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Results from the data obtained in the first physics run of the Relativistic Heavy Ion Collider (RHIC) have shown suprisingly large elliptic flow and suprisingly small HBT radii. Attempts to explain both results in a consistant picture have so far been unsuccessful. The present work shows that a simple thermal-like initial state model coupled to a hadronic rescattering calculation can explain reasonably well both elliptic flow and HBT results from RHIC. The calculation suggests a very early hadronization time of about 1 fm/c after the initial collision of the nuclei.
description: 6 pages, 6 figures
Additional file 1 of Clinical outcomes of Preimplantation genetic testing (PGT) application in couples with chromosomal inversion, a study in the Chinese Han population
Creators: name: Shao, Yuhan
name: Li, Jing
name: Lu, Juanjuan
name: Li, Hongchang
name: Zhu, Yueting
name: Jiang, Wenjie
name: Yan, Junhao
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Chemical Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: Additional file 1.
Robust policy evaluation from large-scale observational studies
Creators: name: Islam, Md Saiful
name: Morshed, Md Sarowar
name: Young, Gary J.
name: Noor-E-Alam, Md.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Methodology (stat.ME)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Under current policy decision making paradigm, we make or evaluate a policy decision by intervening different socio-economic parameters and analyzing the impact of those interventions. This process involves identifying the causal relation between interventions and outcomes. Matching method is one of the popular techniques to identify such causal relations. However, in one-to-one matching, when a treatment or control unit has multiple pair assignment options with similar match quality, different matching algorithms often assign different pairs. Since, all the matching algorithms assign pair without considering the outcomes, it is possible that with same data and same hypothesis, different experimenters can make different conclusions. This problem becomes more prominent in case of large-scale observational studies. Recently, a robust approach is proposed to tackle the uncertainty which uses discrete optimization techniques to explore all possible assignments. Though optimization techniques are very efficient in its own way, they are not scalable to big data. In this work, we consider causal inference testing with binary outcomes and propose computationally efficient algorithms that are scalable to large-scale observational studies. By leveraging the structure of the optimization model, we propose a robustness condition which further reduces the computational burden. We validate the efficiency of the proposed algorithms by testing the causal relation between Hospital Readmission Reduction Program (HRRP) and readmission to different hospital (non-index readmission) on the State of California Patient Discharge Database from 2010 to 2014. Our result shows that HRRP has a causal relation with the increase in non-index readmission and the proposed algorithms proved to be highly scalable in testing causal relations from large-scale observational studies.
Clock synchronization with dispersion cancellation
Creators: name: Giovannetti, V.
name: Lloyd, S.
name: Maccone, L.
name: Wong, F. N. C.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The dispersion cancellation feature of pulses which are entangled in frequency is employed to synchronize clocks of distant parties. The proposed protocol is insensitive to the pulse distortion caused by transit through a dispersive medium. Since there is cancellation to all orders, also the effects of slowly fluctuating dispersive media are compensated. The experimental setup can be realized with currently available technology, at least for a proof of principle.
description: 4 pages, 3 figures
Scalar Glueball Mass Reduction at Finite Temperature in SU(3) Anisotropic Lattice QCD
Creators: name: Ishii, Noriyoshi
name: Suganuma, Hideo
name: Matsufuru, Hideo
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We report the first study of the glueball properties at finite temperatures below T_c using SU(3) anisotropic lattice QCD with beta=6.25, the renormalized anisotropy xi \equiv a_s/a_t = 4 and 20^3 \times N_t (N_t=35,36,37,38,40,43,45,50,72) at the quenched level. From the temporal correlation analysis with the smearing method, about 20 % mass reduction is observed for the lowest scalar glueball as m_G(T)=1250 \pm 50MeV for 0.8 T_c < T < T_c in comparison with m_G \simeq 1500 \sim 1700MeV at T \simeq 0.
description: This is the second revised version using more gauge configurations. 5 pages, Latex2e, 5 figures
Two new 5/6/6 polyketide-amino acid hybrids from a genetic mutant of Periconia sp. F-31
Creators: name: Zhang, Min
name: Liu, Ji-Mei
name: Chen, Ri-Dao
name: Xie, Ke-Bo
name: Chen, Da-Wei
name: Dai, Jun-Gui
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Space Science
subject: Physical Sciences not elsewhere classified
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Plant Biology

description: Peridecalins C and D (1 and 2), one decalin and one oxygen-decalin containing polyketide-amino acid hybrids with 5/6/6 ring system, was isolated from a genetic mutant of Periconia sp. F-31. Their structures were elucidated through extensive spectroscopic data analysis, including 1 D/2D NMR and HR-MS spectra. Biosynthetically, two proposed Diels-Alder reactions are supposed to be involved in the skeleton construction of 1 and 2.
Strongly Interacting Neutrino Portal Dark Matter
Creators: name: Lamprea, J. M.
name: Peinado, E.
name: Smolenski, S.
name: Wudka, J.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a realistic, simple and natural model of strongly-interacting dark matter based on the neutrino-portal paradigm. The strong interactions at small velocities are generated by the exchange of dark photons, and produce the observed core-like DM distribution in galactic centers; this effect could be spoiled by the formation of DM bound states (also due to dark-photon effects), which we avoid by requiring the DM candidates to be light, with masses below O(10 GeV). The mixing of the dark photon with the Z and ordinary photon is strongly suppressed by introducing a softly-broken discrete symmetry similar to charge conjugation, which also ensures that the dark photon life-time is short enough to avoid restrictions derived form big-bang nucleosynthesis and large-scale structure formation. Other constraints are accommodated without the need of fine tuning, in particular nucleon scattering occurs only at one loop, so direct detection cross sections are naturally suppressed. Neutrino masses are generated through the inverse see saw.
description: 23 pages, 13 figures
Shape of the 4.438 MeV gamma-ray line of ^12C from proton and alpha-particle induced reactions on ^12C and ^16O
Creators: name: Kiener, J.
name: de Sereville, N.
name: Tatischeff, V.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We calculated in detail the angular distribution of gamma-rays and the resulting shape of the gamma-ray line produced by the nuclear deexcitation of the 4.439 MeV state of ^12C following proton and alpha-particle interactions with ^12C and ^16O in the energy range from threshold to 100 MeV per nucleon, making use of available experimental data. In the proton energy range from 8.6 to 20 MeV, the extensive data set of a recent accelerator experiment on gamma-ray line shapes and angular distributions was used to deduce parameterizations for the gamma-ray emission of the 2^+, 4.439 MeV state of ^12C following inelastic proton scattering off ^12C and proton induced spallation of ^16O. At higher proton energies and for alpha-particle induced reactions, optical model calculations were the main source to obtain the needed reaction parameters for the calculation of gamma-ray line shapes and angular distributions. Line shapes are predicted for various interaction scenarios of accelerated protons and alpha-particles in solar flares.
description: REVTeX, 9 pages, 8 figures, 4 tables, to be published by Phys. Rev. C
Synthesis, herbicidal activity study, and molecular docking of novel acylthiourea derivatives
Creators: name: Jiang, Binbin
name: Chai, Yunlong
name: He, Xu
name: Wang, Yan
name: Chen, Bo
name: Li, Yang
name: Li, Ranhong
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified

description: A series of new acylthiourea derivatives were synthesized and characterized. The results of preliminary herbicidal activity tests showed that most compounds had good herbicidal activity against Digitaria adscendens and Amaranthus retroflexus, especially for compounds 4b (N-(2-chloro-4-methylsulfonylbenzoyl)-N’-(2-chlorophenyl) thiourea) and 4f (N-(2-chloro-4-methylsulfonylbenzoyl)-N’-(2,3-dichlorophenyl) thiourea). In vivo acetylhydroxylate synthase (AHAS) enzyme activity inhibition tests showed that all compounds had inhibitory activities against the enzyme at a concentration of 100 mg·L−1, with the highest inhibition rate up to 37.05% (compound 4f). In addition, molecular docking analysis was conducted by using the yeast AHAS as the target enzyme. The results of molecular docking were similar to the bioassay experiments, showing compounds 4b and 4f were potent inhibitors of AHAS.
Ptychostomum torquescens Ros & Mazimpaka
Creators: name: Ros, Rosa M.
name: Olaf, Susana Rams
name: Eloy, Olaf Werner
name: Cerón, Eloy
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Plantae
Bryophyta
Bryopsida
Bryales
Bryaceae
Ptychostomum
Ptychostomum torquescens

description: Ptychostomum torquescens (Bruch & Schimp.) Ros & Mazimpaka
RECORDS. — Bescherelle (1882): Constantine, rochers du Mansourah; Djurdjura. Bescherelle (1882), Corbière (1889): Blidah. Bescherelle (1882), Jelenc (1955a): Alger; La Calle; Philippeville. Julien (1894): Région de Constantine. Corbière (1904), Jelenc (1955a): Cherchell. Corbière (1905): Environs de Constantine, Bellevue; Environs de Constantine, Chettabah; Environs de Constantine, djebel Ouach; Environs de Constantine, Les Pins; Environs de Constantine, près l’usine à gaz; Environs de Constantine, route du Séminarie; Environs de Constantine, Sidi M’Cid. Camus (1906), Jelenc (1955a): Oran. Jelenc (1949, 1967): Monts de Tlemcen. Jelenc (1951, 1967): Massif du Tessala, 730 m; Sahel d’Arzeu, Dejbel (B)Orouse, 630 m. Jelenc (1953): Aurès, flanc nord du djebel Pharaoun, 1800 m. Jelenc (1953, 1967): Massif de l’Ouarsenis, cédraie de Téniet el Had, 1500 m. Jelenc (1954b, 1967): Dune de la Station d’Aquiculture et de Pêche de Castiglione. Jelenc (1955a): Arba; Atlas de Blida, oued el Kebir, 200 m; Azéba; Djebel Chenoua; El Kantara; Frais Vallon, 300 m; Kabylie des Babor, cap Aokas; Kabylie du Djurdjura, Aït Khalfoun; Kabylie du Djurdjura, Akfadou; Kabylie du Djurdjura, djebel Gouraya; La Bouzaréa; Lambèse; Monts de Constantine, gorges de Rhumel; djebel Murdjadjo; Ouarsenis. Jelenc (1955a, 1967): Saïda. Jelenc (1956, 1967): Kabylie du Djurdjura, près de Tizi-Ouzou; Massif de la Bouzaréa, forêt de Baïnem; Massif de la Bouzaréa, ravin près des Bains Romains. Bizot (1973): Ruines de Timgad. Syed (1973): Kabylia minor, Ras Aokas. Ros et al. (1990): Skikda beach, 0 m. Ahayoun et al. (2007): sine loco. Mazari & Boulaacheb (2023): Setif, Megriss Mountain. Very common.
COMMENT
Ros et al. (1990) reported Ptychostomum gr. torquescens from Oued Rhiou.
description: Published as part of Ros, Rosa M., Olaf, Susana Rams, Eloy, Olaf Werner & Cerón, Eloy, 2024, Revisiting the Bryophyte Checklist of Algeria: Exploring Diversity and Distribution, pp. 49-116 in Cryptogamie, Bryologie 20 (5) on page 95, DOI: 10.5252/cryptogamie-bryologie2024v45a5, http://zenodo.org/record/14593891
Putting hydrodynamic interactions to work: tagged particle separation
Creators: name: Iguain, J. L.
name: Kurchan, J.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Separation of magnetically tagged cells is performed by attaching markers to a subset of cells in suspension and applying fields to pull from them in a variety of ways. The magnetic force is proportional to the field gradient, and the hydrodynamic interactions play only a passive, adverse role. Here we propose using a homogeneous rotating magnetic field only to make tagged particles rotate, and then performing the actual separation by means of hydrodynamic interactions, which thus play an active role. The method, which we explore here theoretically and by means of numerical simulations, lends itself naturally to sorting on large scales.
description: Version accepted for publication - Europhysics Letters
Density dependence of the s-wave repulsion in pionic atoms
Creators: name: Friedman, E.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Several mechanisms of density dependence of the s-wave repulsion in pionic atoms, beyond the conventional model, are tested by parameter fits to a large (106 points) set of data from $^{16}$O to $^{238}$U, including `deeply bound' states in $^{205}$Pb. Special attention is paid to the proper choice of nuclear density distributions. A density-dependent isovector scattering amplitude suggested recently by Weise to result from a density dependence of the pion decay constant is introduced and found to account for most of the so-called anomalous repulsion. The presence of such an effect might indicate partial chiral symmetry restoration in dense matter. The anomalous repulsion is fully accounted for when an additional relativistic impulse approximation term is included in the potential.
description: 18 pages, 5 figures, version 2 (extended)
Approximation of the average of some random matrices
Creators: name: Ivanov, Grigory
name: Naszódi, Márton
name: Polyanskii, Alexandr
Publisher: name: arXiv
Year: 2019
Subjects: subject: Functional Analysis (math.FA)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: Primary 15A60, Secondary 52A20, 46B07

description: Rudelson's theorem states that if for a set of unit vectors $u_i$ and positive weights $c_i$, we have that $\sum c_i u_i\otimes u_i$ is the identity operator $I$ on ${\mathbb R}^d$, then the sum of a random sample of $Cd\ln d$ of these diadic products is close to $I$. The $\ln d$ term cannot be removed. On the other hand, the recent fundamental result of Batson, Spielman and Srivastava and its improvement by Marcus, Spielman and Srivastava show that the $\ln d$ term can be removed, if one wants to show the existence of a good approximation of $I$ as the average of a few diadic products. It is known that essentially the same proof as Rudelson's yields a more general statement about the average of positive semi-definite matrices. First, we give an example of an average of positive semi-definite matrices where there is no approximation of this average by $Cd$ elements. Thus, the result of Batson, Spielman and Srivastava cannot be extended to this wider class of matrices. Next, we present a stability version of Rudelson's result on positive semi-definite matrices, and thus, extend it to certain non-symmetric matrices. This yields applications to the study of the Banach--Mazur distance of convex bodies. Finally, we show that in some cases, one needs to take a subset of the vectors of order $d^2$ to approximate the identity.
description: v3: 15 pages
A perturbative approach to self-phase modulation and self-steepening of short laser pulses propagating in nonlinear media
Creators: name: Vidal, F.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The solution of the wave equation in the envelope approximation with temporal corrections for a laser pulse propagating in a medium where the Kerr effect, field ionization, and associated absorption take place, is obtained through a first-order perturbative approach. The closed-form expressions so obtained clarify the influence of the various terms of the equation on the laser amplitude and on the frequency generation as a function of the retarded time. Furthermore, they allow extracting scaling parameters which size the nonlinear effects. The results are illustrated quantitatively on the case of a femtosecond pulse focused in the air with typical parameters.
description: 14 pages, 4 figures
Markov Decision Processes under Ambiguity
Creators: name: Bäuerle, Nicole
name: Rieder, Ulrich
Publisher: name: arXiv
Year: 2019
Subjects: subject: Optimization and Control (math.OC)
subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 90C40, 62C05

description: We consider statistical Markov Decision Processes where the decision maker is risk averse against model ambiguity. The latter is given by an unknown parameter which influences the transition law and the cost functions. Risk aversion is either measured by the entropic risk measure or by the Average Value at Risk. We show how to solve these kind of problems using a general minimax theorem. Under some continuity and compactness assumptions we prove the existence of an optimal (deterministic) policy and discuss its computation. We illustrate our results using an example from statistical decision theory.
Ptychostomum turbinatum J. R. Spence
Creators: name: Ros, Rosa M.
name: Olaf, Susana Rams
name: Eloy, Olaf Werner
name: Cerón, Eloy
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Plantae
Bryophyta
Bryopsida
Bryales
Bryaceae
Ptychostomum
Ptychostomum turbinatum

description: Ptychostomum turbinatum (Hedw.) J.R.Spence
Bryum turbinatum (Hedw.) Turner
Bryum turbinatum var. gracilifolium Besch.
Nomenclature follows Hodgetts et al. (2020) and Holyoak (2021).
RECORDS. — Bescherelle (1882): Atlas; Constantine, chute du Rummel; La Calle, pentes gazonnées humides. Lapie (1909): Kabylie du Djurjura. Jelenc (1951, 1967): Haute plaine de Tlemcen, cascades de l’oued bou Ennag à la traversée des collines des Beni Mester, 500 m, 650 m. Jelenc (1955a): Blida. Jelenc (1955a, 1956, 1967): Kabylie du Djurdjura, Main du Juif, 1600 m. Rare.
description: Published as part of Ros, Rosa M., Olaf, Susana Rams, Eloy, Olaf Werner & Cerón, Eloy, 2024, Revisiting the Bryophyte Checklist of Algeria: Exploring Diversity and Distribution, pp. 49-116 in Cryptogamie, Bryologie 20 (5) on page 95, DOI: 10.5252/cryptogamie-bryologie2024v45a5, http://zenodo.org/record/14593891
Respiratory effects of road pollution in recreational cyclists: a pilot study
Creators: name: Elliott, Leslie
name: Loomis, Dana
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: We sought to measure bicyclists’ roadway exposures to particulate matter and assess whether those exposures are associated with reduced pulmonary function. Thirty-one (31) volunteer participants riding bicycles on selected routes were tracked using the Global Positioning System. Personal exposures to particulate matter (PM-10) were measured during the rides and pulmonary function tests were administered at baseline, immediately after the ride, and 2 and 6–24 hours later. Post-ride decrements in pulmonary function were observed for several outcome measures, with the largest differences immediately post-ride. Statistically-significant declines in FEV1 (-38.42, 95% Confidence Interval (CI), −63.79 to −13.05 ml), FVC (-36.89, 95% CI, −62.96, −10.84 ml), and PEFR (-162, 95% CI −316.02 to −9.49 ml/sec) were observed for each increase in decile of peak exposure. PM-10 exposures encountered on roadways may put bicyclists at risk for pulmonary deficits.
Gender differences in climate change perceptions and adaptation strategies: an intra-household analysis from rural Kenya
Creators: name: Ngigi, Marther W.
name: Mueller, Ulrike
name: Birner, Regina
name: Ngigi, Marther W.
name: Mueller, Ulrike
name: Birner, Regina
Publisher: name: Unknown
Year: 2016
Subjects: subject: Consumer/Household Economics
subject: Environmental Economics and Policy
subject: Farm Management
subject: Food Consumption/Nutrition/Food Safety
subject: perceptions
subject: adaptation
subject: group-based approaches
subject: gender
subject: intra-household analysis
subject: Kenya

description: It has been widely acknowledged that the effects of climate change are not gender neutral. However, existing studies on adaptation to climate change mainly focus on a comparison of male-headed and female-headed households. Aiming at a more nuanced gender analysis, this study examines how husbands and wives within the same household perceive climate risks and group-based approaches as coping strategies. The data stem from a unique self-collected and intra-household survey involving 156 couples in rural Kenya, where husbands and wives were interviewed separately. Options for adapting to climate change closely interplay with husbands’ and wives’ roles and responsibilities, social norms, risk perceptions and access to resources. Consequently, a higher percentage of wives adopt crop-related strategies, whereas husbands employ livestock- and agroforestry-related strategies. Besides, there are gender-specific climate information needs, gendered trust of information and preferred channels of information dissemination. Further, it turned out that group-based approaches benefit husbands and wives differently. Group-based approaches provide avenues for diversifying livelihoods and managing risks for wives, while they are pathways for sharing climate information and adaptation options for husbands. Social groups help husbands and wives to enhance their welfare through accumulating vital types of capital such as livestock, durable assets, human, natural, financial and social capital. The findings suggest that designing gender-sensitive policies and institutionalizing gender in climate change adaptation and mitigation frameworks, are vital. Policy interventions that rely on group-based approaches must reflect gender perspectives on the ground in order to amplify men’s and women’s specific abilities to manage risks and improve welfare outcomes in the wake of accelerating climate change.
Dissipationless Collapse of Spherical Protogalaxies and the Fundamental Plane
Creators: name: Dantas, Christine C.
name: Capelato, Hugo V.
name: de Carvalho, Reinaldo R.
name: Ribeiro, Andre L. B.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Following on from the numerical work of Capelato, de Carvalho & Carlberg (1995, 1997), where dissipationless merger simulations were shown to reproduce the "Fundamental Plane" (FP) of elliptical galaxies, we investigate whether the end products of pure, spherically symmetric, one-component dissipationless {\it collapses} could also reproduce the FP. Past numerical work on collisionless collapses have addressed important issues on the dynamical/structural characteristics of collapsed equilibrium systems. However, the study of collisionless collapse in the context of the nature of the FP has not been satisfactorily addressed yet. Our aim in this paper is to focus our attention on the resulting collapse of simple one-component spherical models with a range of different initial virial coefficients. We find that the characteristic correlations of the models are compatible with virialized, centrally homologous systems. Our results strengthen the idea that merging may be a fundamental ingredient in forming non-homologous objects.
description: 9 pages, 4 Postscript figures, Astronomy & Astrophysics in press (2002). Abstract placement corrected
Comment on "If it's pinched it's a memristor" by L. Chua [Semicond. Sci. Technol. 29, 104001 (2014)]
Creators: name: Pershin, Y. V.
name: Di Ventra, M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Emerging Technologies (cs.ET)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: In his paper "If it's pinched it's a memristor" [Semicond. Sci. Technol. 29, 104001 (2014)] L. Chua claims to extend the notion of memristor to all two-terminal resistive devices that show a hysteresis loop pinched at the origin. He also states that memcapacitors and meminductors can be defined by a trivial replacement of symbols in the memristor relations, and, therefore, there should be a correspondence between the hysteresis curves of different types of memory elements. This leads the author to the erroneous conclusion that charge-voltage curves of any memcapacitive devices should be pinched at the origin. The purpose of this Comment is to correct the wrong statements in Chua's paper, as well as to highlight some other inconsistencies in his reasoning. We also provide experimental evidence of a memcapacitive device showing non-pinched hysteresis.
Biomass cooking carbon monoxide levels in commercial canteens in Kigali, Rwanda
Creators: name: Woolley, Katherine
name: Bartington, Suzanne E.
name: Pope, Francis D.
name: Price, Malcolm J.
name: G. Neil Thomas
name: Telesphore Kabera
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: Computational Biology

description: Carbon monoxide (CO) is harmful to human health, yet there is limited evidence concerning emissions associated with biomass fuel cooking in occupational settings. Real-time 48-hour monitoring of CO concentrations at breathing height, was undertaken in staff and student kitchen and serving areas of two commercial canteens. We characterized two diurnal CO peaks coinciding with cooking activities. Peak CO concentrations of 255.5 ppm and 1-hour average of 76.3 ppm (IQR: 57.8–109.0 ppm) were observed in the student kitchen; the staff kitchen levels were 208.5 ppm, and 76.3 ppm (IQR: 52.5–114.0 ppm), respectively. High magnitude CO concentrations (8-hour average: 40.7 ppm SD: 40.0 ppm) which exceed World Health Organisation (WHO) Indoor Air Quality standards were observed. Further investigation of personal exposure and health impacts among kitchen staff is required, to inform interventions in this setting.
Additional file 1: of Identification of the defense-related gene VdWRKY53 from the wild grapevine Vitis davidii using RNA sequencing and ectopic expression analysis in Arabidopsis
Creators: name: Zhang, Ying
name: Yao, Jia-Long
name: Feng, Hu
name: Jiang, Jianfu
name: Fan, Xiucai
name: Jia, Yun-Fei
name: Wang, Ran
name: Liu, Chonghuai
Publisher: name: figshare
Year: 2019
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Evolutionary Biology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Plant Biology
subject: Virology

description: Primer sequences used in this study. (DOCX 16 kb)
Pulvigera lyellii Plasek, Sawicki & Ochyra
Creators: name: Ros, Rosa M.
name: Olaf, Susana Rams
name: Eloy, Olaf Werner
name: Cerón, Eloy
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Plantae
Bryophyta
Bryopsida
Orthotrichales
Orthotrichaceae
Pulvigera
Pulvigera lyellii

description: Pulvigera lyellii (Hook. & Taylor) Plášek, Sawicki & Ochyra
Orthotrichum lyellii Hook. & Taylor
Nomenclature follows Plášek et al. (2015).
RECORDS. — Bescherelle (1882): Atlas, troncs d’arbres; Bouzazi. Bescherelle (1882), Jelenc (1955a): Kabylie du Djurdjura, Tizi Ouzou; La Calle. Corbière (1889): Blida, forêt des Beni-Salah, 1500 m. Corbière (1905): Environs de Constantine, djebel Ouach. Lapie (1909): Kabylie du Djurdjura, Beni Khalfoun. Jelenc (1949, 1967): Monts de Tlemcen, forêts de Zariflet et d’Hafir, 1000-1400 m. Jelenc (1955a): Kabylie de Collo, djebel Goufi; Kabylie du Djurdjura, Aït Daoud; Monts de Constantine; Téniet el Had. Ahayoun et al. (2007): Djebel Bonti, Collo. Boukhatem et al. (2017): El-Kala National Park, Tonga lake watershed. Mazari & Boulaacheb (2023): Setif, Megriss Mountain. Frequent.
description: Published as part of Ros, Rosa M., Olaf, Susana Rams, Eloy, Olaf Werner & Cerón, Eloy, 2024, Revisiting the Bryophyte Checklist of Algeria: Exploring Diversity and Distribution, pp. 49-116 in Cryptogamie, Bryologie 20 (5) on page 95, DOI: 10.5252/cryptogamie-bryologie2024v45a5, http://zenodo.org/record/14593891
Atomic Bose Condensation and the Lattice
Creators: name: Moore, Guy D.
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: I show how interaction corrections to the Bose condensation temperature of an atomic gas can be computed using a combination of perturbative effective field theory and lattice techniques.
description: Lattice2001(spin)
A Measurement of the Electric Form Factor of the Neutron through $\vec{d}(\vec{e},e'n)p$ at $Q^2 = 0.5$ (GeV/c)$^2$
Creators: name: E93026 Collaboration
name: Zhu, H.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We report the first measurement of the neutron electric form factor $G_E^n$ via $\vec{d}(\vec{e},e'n)p$ using a solid polarized target. $G_E^n$ was determined from the beam-target asymmetry in the scattering of longitudinally polarized electrons from polarized deuterated ammonia, $^{15}$ND$_3$. The measurement was performed in Hall C at Thomas Jefferson National Accelerator Facility (TJNAF) in quasi free kinematics with the target polarization perpendicular to the momentum transfer. The electrons were detected in a magnetic spectrometer in coincidence with neutrons in a large solid angle segmented detector. We find $G_E^n = 0.04632\pm0.00616 (stat.) \pm0.00341 (syst.)$ at $Q^2 = 0.495$ (GeV/c)$^2$.
description: Latex2e 5 pages, 3 figures
Platyarthrini Bates 1870
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae

description: Tribe Platyarthrini Bates, 1870   Platyarthron Guérin-Méneville, 1844: 230
 Platyarthrum Agassiz, 1846: 295 (unjustified emendation).
 Type-species: Platyarthron bilineatum Guérin-Méneville, 1844 (by monotypy).
 Syn. Coelomarthron Thomson, 1861: 199.
 Coelarthron Lacordaire, 1869: 142 (unjustified emendation).
 Type-species: Platyarthron bilineatum Guérin-Méneville, 1844 (by original designation).
description: Published as part of Monné, Miguel A., 2012, Catalogue of the type-species of the genera of the Cerambycidae, Disteniidae, Oxypeltidae and Vesperidae (Coleoptera) of the Neotropical Region 3213, pp. 1-183 in Zootaxa 3213 (1) on page 44, DOI: 10.11646/zootaxa.3213.1.1, http://zenodo.org/record/10096127
Optimal quantum control with poor statistics
Creators: name: Sauvage, Frederic
name: Mintert, Florian
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Control of quantum systems is a central element of high-precision experiments and the development of quantum technological applications. Control pulses that are typically temporally or spatially modulated are often designed based on theoretical simulations. As we gain control over larger and more complex quantum systems, however, we reach the limitations of our capabilities of theoretical modeling and simulations, and learning how to control a quantum system based exclusively on experimental data can help us to exceed those limitations. Due to the intrinsic probabilistic nature of quantum mechanics, it is fundamentally necessary to repeat measurements on individual quantum systems many times in order to estimate the expectation value of an observable with good accuracy. Control algorithms requiring accurate data can thus imply an experimental effort that negates the benefits of avoiding theoretical modeling. We present a control algorithm based on Bayesian optimization that finds optimal control solutions in the presence of large measurement shot noise and even in the limit of single-shot measurements. With several numerical and experimental examples we demonstrate that this method is capable of finding excellent control solutions with minimal experimental effort
Evaluation of Integer Weighting for the 1997 Census of Agriculture
Creators: name: Scholetzky, Wendy
name: Scholetzky, Wendy
Publisher: name: Unknown
Year: 2000
Subjects: subject: Agricultural and Food Policy
subject: Research Methods/ Statistical Methods
subject: 1997 Census of Agriculture
subject: Integer weight
subject: Noninteger weight
subject: t-value
subject: Percent difference.

description: The census of agriculture is an important source of statistics about the Nation’s agricultural production and provides consistent, comparable data at the county, state, and national levels. Each census record has weights which are used to produce totals for the entire population. The process of rounding weights to integer values has been in place for the last several censuses. When a record’s weight is rounded to an integer value, the totals represented by that record may or may not change dramatically. These changes may or may not become negligible when producing totals at the state or county level. This report compares totals calculated with the noninteger weights to the published totals (calculated with the integer weights) for the 1997 Census of Agriculture, evaluates how different these totals are, and examines how the differences relate to the standard error. The analysis examines a number of characteristics at both the state and county levels. The report also examines another weighting approach where the noninteger weights are applied to the record and the weighted data values are rounded at the record level. The difference between totals produced with these values and the noninteger weights is calculated and compared to the above differences. The reasons for rounding weights, to ease data review procedures and to ensure that publication totals add, are legitimate concerns. The author asserts that it is possible to address these two concerns and improve the totals produced when NASS revamps the census processing system for the 2002 census.
Meson exchange currents in a relativistic model for electromagnetic one nucleon emission
Creators: name: Meucci, Andrea
name: Giusti, Carlotta
name: Pacati, Franco Davide
Publisher: name: arXiv
Year: 2002
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We analyze the role of meson exchange currents (MEC) in photon- and electron-induced one nucleon emission reactions in a fully relativistic model. The relativistic mean field theory is used for the bound state and the Pauli reduction for the scattering state. Direct 1-body and exchange 2-body terms in the nuclear current are considered. Results for the 12C(gamma,p) and 16O(gamma,p) differential cross sections and photon asymmetries are displayed in an energy range between 60 and 196 MeV. The 2-body seagull current affects the cross section less than in nonrelativistic analyses. In the case of the 16O(gamma,n) differential cross section MEC effects are large but not sufficient to reproduce the data. MEC have a small effect on (e,e'p) calculations.
description: 8 pages, 7 figures, REVTeX4
Non-linear $σ$-model for long range disorder and quantum chaos
Creators: name: Kogan, V. R.
name: Efetov, K. B.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We suggest a new scheme of derivation of a non-linear ballistic $σ$-model for a long range disorder and quantum billiards. The derivation is based on writing equations for quasiclassical Green functions for a fixed long range potential and exact representation of their solutions in terms of functional integrals over supermatrices $Q$ with the constraint $Q^2=1$. Averaging over the long range disorder or energy we are able to write a ballistic $σ$-model for all distances exceeding the electron wavelength. Neither singling out slow modes nor a saddle-point approximation are used in the derivation. Carrying out a course graining procedure that allows us to get rid off scales in the Lapunov region we come to a reduced $σ$-model containing a conventional collision term. For quantum billiards, we demonstrate that, at not very low frequencies, one can reduce the $σ$-model to a one-dimensional $σ$-model on periodic orbits. Solving the latter model, first approximately and then exactly, we resolve the problem of repetitions.
description: 22 pages, no figures, to be submitted in PRB
Variabilities in concentrations of selected perfluoroalkyl acids among normotensives and hypertensives across various stages of glomerular function
Creators: name: Jain, Ram B.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Data (N = 10643) from National Health and Nutrition Examination Survey for US adults aged > = 20 years for 2003-2016 were analyzed to evaluate how concentrations of selected perfluoroalkyl acids (PFAA) vary among normotensives and hypertensives across various stages of glomerular function (GF) namely from stage 1 to stage 3B/4. Regression models stratified by GF stages and hypertension status were fitted for each of the five PFAAs, namely, PFOA, PFOS, PFDA, PFHxS, and PFNA. For the total population, hypertensives had higher adjusted levels than normotensives for GF-1, GF-2, and GF-3A with highest differences being at GF-3A for every PFAA. At GF-3B/4, hypertensives had lower adjusted geometric means (AGM) than normotensives. While AGMs for PFAA for hypertensives followed inverted U-shaped distributions with points of inflections at GF-3A, for normotensives the points of inflections were at GF-2 or GF-3A.