cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Evidence for a new elliptical-galaxy paradigm: Sérsic and core galaxies
Creators: name: Trujillo, I.
name: Erwin, Peter
name: Ramos, A. Asensio
name: Graham, Alister
Publisher: name: Swinburne
Year: 2024

description: We fitted the surface-brightness profiles of 21 elliptical galaxies using both the Sérsic function and a new empirical model that combines an inner power law with an outer Sérsic function. The profiles are combinations of deconvolved Hubble Space Telescope (HST) profiles from the literature and ellipse fits to the full WFPC2 mosaic images and thus span a radial range from ∼0″.02 to about twice the half-light radius. We are able to accurately fit the entire profiles using either the Sérsic function or our new model. In doing so, we demonstrate that most, if not all, so-called "power-law" galaxies are better described as "Sérsic galaxies"-they are well modeled by the three-parameter Sérsic profile into the limits of HST resolution-and that "core" galaxies are best understood as consisting of an outer Sérsic profile with an inner power-law cusp, which is a downward deviation from the inward extrapolation of the Sérsic profile. This definition of cores resolves ambiguities that result when the popular "Nuker law" is fitted to the profiles of ellipticals and bulges, particularly at lower luminosities. We also find that using the Nuker law to model core-galaxy nuclear profiles systematically overestimates the core radii by factors of 1.5-4.5 and underestimates the inner power-law slope by ∼20%-40% or more.
Quantitative morphology of galaxies in the core of the Coma Cluster
Creators: name: Gutiérrez, Carlos M.
name: Trujillo, Ignacio
name: Aguerri, Jose A.L.
name: Graham, Alister
name: Caon, Nicola
Publisher: name: Swinburne
Year: 2024

description: We present a quantitative morphological analysis of 187 galaxies in a region covering the central 0.28 deg2 of the Coma Cluster. Structural parameters from the best-fitting Sérsic r1/n bulge plus, where appropriate, exponential disk model, are tabulated here. This sample is complete down to a magnitude of R = 17 mag. By examining the recent compilation by Edwards et al. of galaxy redshifts in the direction of Coma, we find that 163 of the 187 galaxies are Coma Cluster members and that the rest are foreground and background objects. For the Coma Cluster members, we have studied differences in the structural and kinematic properties between early- and late-type galaxies and between the dwarf and giant galaxies. Analysis of the elliptical galaxies reveals correlations among the structural parameters similar to those previously found in the Virgo and Fornax Clusters. Comparing the structural properties of the Coma Cluster disk galaxies with disk galaxies in the field, we find evidence for an environmental dependence: the scale lengths of the disk galaxies in Coma are 30% smaller. An analysis of the kinematics shows marginal differences between the velocity distributions of elliptical galaxies with Sérsic index n < 2 (dwarfs) and those with n > 2 (giants), the dwarf galaxies having a greater (cluster) velocity dispersion. Finally, our analysis of all 421 background galaxies in the catalog of Edwards et al. reveals a nonuniform distribution in redshift with contrasts in density of ~3, characterized by a void extending from ~10,000 to ~20,000 km s-1, and two dense and extended structures centered at ~20,000 and ~47,000 km s-1.
Type 1 diabetes: basis of causes and away of prevention
Creators: name: Iqbal, Zahid
name: Md. Shamim Hossain*
name: Mst. Touhida Khatun
Publisher: name: figshare
Year: 2015
Subjects: subject: Education
subject: Microbiology
subject: FOS: Biological sciences
subject: Biological Engineering
subject: Biotechnology
subject: Cell Biology
subject: Genetics

description: Type 1 diabetes (T1D) is characterized by autoimmune destruction of insulin-producing β-cells in the pancreas, an organ in the abdomen, produces very little or no insulin caused by a complex interaction of genetic and environmental factors. Insulin is a hormone that helps the body to absorb and use glucose and other nutrients from food, store fat, and build up protein and without insulin, blood glucose (sugar) levels become higher than normal. The genetic factors involved consist of multiple susceptibility genes, at least five of which, HLA, INS, CTLA4, PTPN22 and IL2RA/CD25. The excess mortality associated with the complications of type 1 diabetes and the increasing incidence of childhood type 1 diabetes emphasize the importance of therapeutic strategies to prevent this chronic disorder. Although no current "cure" exists, recent genetic data and preliminary trial results suggest T cells as a target for preventive strategies. Another potentially attainable target is induction of tolerance to the ß-cell proteins such as insulin that are inappropriately recognized. Other strategies involve ß-cell replacement, but currently there are insufficient donor cells available. But researchers revealed that breastfeeding, taking proper exercise, vaccination against causing enterovirous, vitamin D, regulation of maternal diet and keep away from smoking are the best away prevent from type 1 diabetes. This review aims to provide the link of causing type 1 diabetes and the away of prevention to the type 1 diabetes patient.
Biodiversity Digital Twin: Implementation Status and Extension Opportunities
Creators: name: Harrison, Jesse
name: Aalto, Tero
name: Oostervink, Nick
name: Geenen, Thomas
Publisher: name: Zenodo
Year: 2023
Subjects: biodiversity
digital twin
horizon europe
destination earth
biodt

description: Poster presentation at the 2nd Destination Earth User eXchange (13-14 November 2023, Bonn, Germany).
Supplementary material from Present and future suitability of invasive and urban vectors through an environmentally-driven Mosquito Reproduction Number
Creators: name: Pardo-Araujo, Marta
name: Eritja, Roger
name: Alonso, David
name: Bartumeus, Frederic
Publisher: name: The Royal Society
Year: 2024
Subjects: classificationCode: 310399
subject: Ecology not elsewhere classified

description: Supplementary material detailing the methodology used in the main manuscript.
The formation of galactic bulges
Creators: name: Peletier, Reynier
name: Balcells, Marc
name: Falcón-Barroso, Jesus
name: Graham, Alister
Publisher: name: Swinburne
Year: 2024

description: We summarise some recent results about nearby galactic bulges, relevant to their formation. We highlight a number of significant advances in our understanding of the surface brightness profiles, stellar populations, and especially the very centers of spirals. We also view our own Milky Way as if it were an external galaxy. Our main conclusions are that bulges of early-type spirals (Sb or earlier) contain central point sources, just like late-type spirals and most other types of galaxies. Central point source luminosities correlate best with total bulge luminosity, and not as well with morphological type. Bulges of early-type spiral galaxies follow the fundamental plane and the colour/line strength vs. luminosity relations of elliptical galaxies. Although we have a reasonable idea about bulges of early-type spirals we know much less about late-type bulges. However, the close resemblance of our Milky Way Bulge to early-type external bulges makes us suspect that maybe bulges of late-type spirals might be very similar as well.
ROBOTOTEXNIKANING TARAQQIYOTDAGI O'RNI
Creators: name: Shodiyeva, Sitora
name: Murtazoyev, Azizbek
Publisher: name: Zenodo
Year: 2024

description: Robototexnika bu robotlar va boshqa avtomatik tizimlarni yaratish, o'rganish va ulardan foydalanish bilan shug'ullanuvchi ilmiy va amaliy soha hisoblanadi. Ushbu sohada, texnologiya va mexanika asosida yaratilgan qurilmalar va robotlar o'zgaruvchanlik va ish xavfsizligi tizimi bilan farqlanadi.
Antioxidant and Antimicrobial Assessment of Synthesized and Spectrally Characterized New Nitrophenothiazines and their Sulfone Analogues
Creators: name: Gautam, Naveen
name: Ankita Garg
name: Bishnoi, Ajay Kumar
name: Agarwal, Shikha
name: Gautam, Dinesh Chand
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Science Policy
subject: Mathematics
subject: FOS: Mathematics
subject: Biological Sciences
subject: Chemistry
subject: Earth and Environmental Sciences
subject: Cell Biology

description: GRAPHICAL ABSTRACT
title: The elves
title: Les farfadets
titleType: AlternativeTitle
Creators: name: François, Alexandre
Publisher: name: COCOON - https://cocoon.huma-num.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2011
Subjects: subject: Dorig
subject: wwo

description: Conforms to: doi:10.34847/cocoon.49aefa90-8c1f-3ba8-a099-0ebefc6a2aa7
description: Un homme se fait aider par de mystérieux farfadets...
Lipid Recovery by Microalgae from Agro Industrial Waste Water as Biofuel Substrate
Creators: name: Hesam Kamyab
name: Hosseini, Seyed Ehsan
name: Mohd Fadhil Md Din
name: Muhd Zaimi Abd Majid
name: Keyvanfar, Ali
name: Veeramuthu Ashokkumar
name: Chew Tin Lee
Publisher: name: figshare
Year: 2015
Subjects: Environmental Science

description: Biodiesel has received much attention in recent years because of the depletion fossil fuels. In tropical countries, the palm oil industry discharges a large amount of waste water. The waste water can serve as an economical nutrient source or substrate that can support the cultivation of microalgae. This study aims to identify the local species of microalgae potentially existing in the industrial waste water of palm oil mill effluent (POME). POME was selected as a key source of waste due to its higher potential in producing lipids from microalgae as a biofuel substrate. The parameters selected for investigation were the amount of nutrients, carbon source, light intensity, and temperature. A total of five microalgae strains were tested during this study, among which Chlorella sorokiniana produced the highest lipid content when using POME as a substrate. This productivity was determined by testing for chlorophyll content, growth rate, biomass productivity and lipid content, which were found to be 0.099/day, 8.0 mg/L.day and 2.68 mg/mg cell dry weight (CDW), respectively. However, in the presence of glucose as an alternative source of carbon, with the combination of a nitrogen source, a higher lipid production was achieved 2.68 (mg/mg CDW) by Chlorella sorokiniana with a ratio of 100:7 (carbon/nitrogen) sources.
An outer disk in the 'Compact elliptical' galaxy M32
Creators: name: Graham, Alister
Publisher: name: Swinburne
Year: 2024

description: The surface brightness profile, velocity dispersion measurement, and estimated supermassive black hole (SMBH) mass in the prototype 'compact elliptical' galaxy M32 are inconsistent with the galaxy having, and probably ever having had, an r1=4 light profile. Instead, the radial surface brightness profile is described almost perfectly with an inner bulge and outer exponential disk model.
A photometric method to determine supermassive black hole masses
Creators: name: Graham, Alister
name: Erwin, Peter
name: Caon, Nicola
name: Trujillo, Ignacio
Publisher: name: Swinburne
Year: 2024

description: We report the discovery of a strong correlation between the shape of a bulge's light-profile and the mass of its central supermassive black hole (Mbh). We find that log(Mbh=M-circle-dot) = 2:91(±0:38) log(n) + 6:37(±0:21), where n is the Sersic r1=n shape index. This correlation is shown to be at least as strong as the relationship between the logarithm of the stellar velocity dispersion and logMbh and has comparable scatter.
The role of the acidic domain of α-synuclein in amyloid fibril formation: a molecular dynamics study
Creators: name: Seokmin Shin
name: SeongByeong Park
name: Jeseong Yoon
name: Soonmin Jang
name: Kyunghee Lee
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Cancer
subject: Biological Sciences
subject: Chemistry
subject: Neuroscience
subject: Genetics
subject: FOS: Biological sciences
subject: Cell Biology
subject: Physics
subject: Biochemistry
subject: Biophysics

description: The detailed mechanism of the pathology of α-synuclein in the Parkinson’s disease has not been clearly elucidated. Recent studies suggested a possible chaperone-like role of the acidic C-terminal region of α-synuclein in the formation of amyloid fibrils. It was also previously demonstrated that the α-synuclein amyloid fibril formation is accelerated by mutations of proline residues to alanine in the acidic region. We performed replica exchange molecular dynamics simulations of the acidic and nonamyloid component (NAC) domains of the wild type and proline-to-alanine mutants of α-synuclein under various conditions. Our results showed that structural changes induced by a change in pH or an introduction of mutations lead to a reduction in mutual contacts between the NAC and acidic regions. Our data suggest that the highly charged acidic region of α-synuclein may act as an intramolecular chaperone by protecting the hydrophobic domain from aggregation. Understanding the function of such chaperone-like parts of fibril-forming proteins may provide novel insights into the mechanism of amyloid formation.
When is a bulge not a bulge? Inner disks masquerading as bulges in NGC 2787 and NGC 3945
Creators: name: Erwin, Peter
name: Vega Beltrán, Juan Carlos
name: Graham, Alister
name: Beckman, John E.
Publisher: name: Swinburne
Year: 2024

description: We present a detailed morphological, photometric, and kinematic analysis of two barred S0 galaxies with large, luminous inner disks inside their bars. We show that these structures, in addition to being geometrically disklike, have exponential profiles (scale lengths ~300-500 pc) distinct from the central, nonexponential bulges. We also find them to be kinematically disklike. The inner disk in NGC 2787 has a luminosity roughly twice that of the bulge; but in NGC 3945, the inner disk is almost 10 times more luminous than the bulge, which itself is extremely small (half-light radius ≈100 pc, in a galaxy with an outer ring of radius ≈14 kpc) and has only ~5% of the total luminosity—a bulge/total ratio much more typical of an Sc galaxy. We estimate that at least 20% of (barred) S0 galaxies may have similar structures, which means that their bulge/disk ratios may be significantly overestimated. These inner disks dominate the central light of their galaxies; they are at least an order of magnitude larger than typical 'nuclear disks' found in elliptical and early‐type spiral galaxies. Consequently, they must affect the dynamics of the bars in which they reside.
The occurrence of the stilbene piceatannol in grapes
Creators: name: Bavaresco, L.
name: Fregoni, M.
name: Trevisan, M.
name: Mattivi, F.
name: Vrhovsek, U.
name: Falchetti, R.
Publisher: name: VITIS - Journal of Grapevine Research
Year: 2015

description: Piceatannol (trans-3,3',4,5'-tetrahydroxy-stilbene) is a natural stilbene occurring in a number of plant species, and it has been shown to have beneficial effects on human health. The compound can seldom be consumed by humans, because it occurs in non-food plants, or in non-edible organs. Here we show for the first time that grapes (Vitis vinifera L. cv. Cabernet Sauvignon) have significant amounts of piceatannol (0.052 µg g-1 fresh wt). The identity of piceatannol was confirmed by HPLC and LC-MS.
description: VITIS - Journal of Grapevine Research, Vol. 41 No. 3 (2002): Vitis
Discrimination of grapevine (Vitis vinifera L.) leaf shape by fractal spectrum
Creators: name: Mancuso, S.
Publisher: name: VITIS - Journal of Grapevine Research
Year: 2015

description: A technique was developed (1) to digitise grapevine leaves, (2) to split the images obtained in the three components of the RGB (red, green and blue) colour system, obtain the fractal spectrum for each colour component of the leaf and (3) to calculate 15 different fractal parameters. The system, consisting of a scanning device, a personal computer and the code written in the C language, was then tested to characterize and identify 12 Sangiovese-related grapevine accessions. The results enabled us to distinguish between all accessions with a better discrimination than that obtained in previous studies with molecular markers or elliptic Fourier analysis. More, all the fractal parameters calculated for leaves of Sangiovese R10 grown in very different environments did not show any significant modification, revealing that fractal features can be considered environment-independent. The fractal analysis approach proposed, on the basis of the results obtained, gives the opportunity to verify the characters of distinction, uniformity and stability (DUS) requested by the Union for the Protection of Plant Varieties (UPOV) before plant breeders rights are granted.
description: VITIS - Journal of Grapevine Research, Vol. 41 No. 3 (2002): Vitis
Les teneurs en acides gras, en eau et en acide abscissique des feuilles de vigne (Vitis vinifera L. var. Cabernet Sauvignon) infectées par Eutypa lata
Creators: name: Koussa, T.
name: Dubos, B.
name: Cherrad, M.
Publisher: name: VITIS - Journal of Grapevine Research
Year: 2015

description: Water, fatty acids and abscisic acid contents of grapevine leaves (Vitis vinifera, cv. Cabernet Sauvignon) infected by Eutypa lata Eytypiose of grapevines led to a lowering of the water content and to an accumulation of abscisic acid (ABA) in the leaves of Cabernet Sauvignon known to be susceptible to Eutypiose. The accumulation of ABA in the leaves of infected plants possibly causes changes in the composition of fatty acids, in partiular by reducing their degree of insaturation and by elongating their aliphatic chains. These changes may lower the permeability of membranes and, as a consequence, exchanges with the environment, which possibly intensifies dehydration of infected leaves during their development.
description: VITIS - Journal of Grapevine Research, Vol. 41 No. 3 (2002): Vitis
A new grapevine yellows phytoplasma from the Buckland Valley of Victoria, Australia
Creators: name: Constable, F. E.
name: Whiting, J. R.
name: Gibb, K. S.
name: Symons, R. H.
Publisher: name: VITIS - Journal of Grapevine Research
Year: 2015

description: A new phytoplasma detected in grapevines with grapevine yellows disease from the Buckland Valley of Victoria, Australia was characterized. Buckland Valley grapevine yellows phytoplasma (BVGYp) could not be amplified by PCR using primers specific for the stolbur (STOL, 16SrXII) group of phytoplasmas indicating that it was unlikely to be a STOL group phytoplasma. BVGYp was amplified by PCR using primers specific for both the aster yellows (AV, 16Sr I) and STOL phytoplasma groups, indicating that it may be more closely related to the AY group phytoplasmas. Sequence analysis of 16SrRNA gene sequences showed that BVGYp clustered with AY and STOL groups of phytoplasmas. Sequence similarities were determined by pairwise comparisons of the 16S rDNA sequence of BVGYp WAY and STOL group phytoplasmas and BVGYp was more closely related to the AY group phytoplasmas. Although the data indicate BVGYp may form a newAY subgroup, the similarity coefficients between BVGYp and phytoplasmas from the AY, STOL and Mexican periwinkle virescence groups, derived from putative RFLP patterns, were less than 90%, so BVGYp may actually form a new phytoplasma group.
description: VITIS - Journal of Grapevine Research, Vol. 41 No. 3 (2002): Vitis
Hubble Space Telescope detection of spiral structure in two Coma Cluster dwarf galaxies
Creators: name: Graham, Alister
name: Jerjen, Helmut
name: Guzmán, Rafael
Publisher: name: Swinburne
Year: 2024

description: We report the discovery of spiral-like structure in Hubble Space Telescope images of two dwarf galaxies (GMP 3292 and GMP 3629) belonging to the Coma Cluster. GMP 3629 is the faintest such galaxy detected in a cluster environment, and it is the first such galaxy observed in the dense Coma Cluster. The large bulge and the faintness of the broad spiral-like pattern in GMP 3629 suggest that its disk may have been largely depleted. We may therefore have found an example of the "missing link" in theories of galaxy evolution that have predicted that dwarf spiral galaxies, particularly in clusters, evolve into dwarf elliptical galaxies.
Ethanol application at veraison decreases acidity in Cabernet Sauvignon grapes
Creators: name: Chervin, C.
name: El-Kereamy, A.
name: Ibrahim, H.
name: Garcia, M.
name: Dedieu, F.
name: Romieu, C.
name: Ollat, N.
name: Roustan, J. P.
Publisher: name: VITIS - Journal of Grapevine Research
Year: 2015

description: Research Note Spraying ethanol (5 % v/v in water) onto grape clusters at mid-veraison led to a 30 % drop in the malic acid concentration at harvest. As a consequence, titratable acidity also dropped by 10 %. The concentration of tartaric acid did not change significantly. The mode of action of ethanol on malic acid metabolism is discussed.
description: VITIS - Journal of Grapevine Research, Vol. 41 No. 3 (2002): Vitis
Chloroplast SSR markers to assess DNA diversity in wild and cultivated grapevines
Creators: name: Grassi, F.
name: Labra, M.
name: Scienza, A.
name: Imazio, S.
Publisher: name: VITIS - Journal of Grapevine Research
Year: 2015

description: Research Note
description: VITIS - Journal of Grapevine Research, Vol. 41 No. 3 (2002): Vitis
Molecular discrimination and identification of some Turkish grape cultivars (Vitis vinifera L.) by RAPD markers
Creators: name: Ergül, A.
name: Marasali, B.
name: Ağaoğlu, Y. S.
Publisher: name: VITIS - Journal of Grapevine Research
Year: 2015

description: Research Note
description: VITIS - Journal of Grapevine Research, Vol. 41 No. 3 (2002): Vitis
Juice constituents and skin pigments in Vitis coignetiae Pulliat grapevines
Creators: name: Okamoto, G.
name: Ueki, K.
name: Ichi, T.
name: Aoki, H.
name: Fujiwara, M.
name: Hirano, K.
Publisher: name: VITIS - Journal of Grapevine Research
Year: 2015

description: Research Note
description: VITIS - Journal of Grapevine Research, Vol. 41 No. 3 (2002): Vitis
Assessing impacts on urban greenspace, waterways, and vegetation in urban planning
Creators: name: Sander, Heather A.
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Science Policy
subject: Biological Sciences
subject: Sociology
subject: FOS: Sociology
subject: Ecology
subject: FOS: Biological sciences
subject: Earth and Environmental Sciences
subject: Engineering

description: Parks, waterways, and vegetation enhance the well-being of urbanites and thus warrant consideration in planning and policy-making. It is, however, difficult to assess how land-use change may impact these features and how this in turn may impact well-being. I use a case-study approach to present a framework that combines geospatial and economic valuation techniques to generate indicators of the effects of land-use policies that alter these amenities on community well-being. This framework quantifies the impacts of land-use change on urban environmental amenities in a way that could help communities plan land use so as to maintain well-being as they urbanise.
HST photometry of dwarf elliptical galaxies in coma, and an explanation for the alleged structural dichotomy between dwarf and bright elliptical galaxies
Creators: name: Graham, Alister
name: Guzmán, Rafael
Publisher: name: Swinburne
Year: 2024

description: As part of a research program exploring how and why dwarf elliptical (dE) galaxies depart from the fundamental plane defined by luminous elliptical (E) galaxies, we have analyzed archival Hubble Space Telescope F606W images of a sample of 18 dE galaxy candidates in the Coma Cluster. We model the full radial extent of their light profiles by simultaneously fitting a point-spread function (PSF) convolved Sérsic R1/n model and, when necessary, either a central point source or a central PSF-convolved Gaussian. Nucleation was detected in all but two of our final sample of 15 dE galaxies. When detected, the luminosities of the central component, Lnuc, scale with the host galaxy luminosity Lgal such that Lnuc = 104.76±0.10(Lgal/107) 0.87±0.26. We confirm that the light profiles of the underlying host galaxies display systematic departures from an exponential model that are correlated with the model-independent host galaxy luminosity and are not due to biasing from the nuclear component. The Pearson correlation coefficient between log n and central galaxy surface brightness μ0 (excluding the flux from extraneous central components) is -0.83 at a significance level of 99.99%. Excluding one outlier, the Pearson correlation coefficient between the logarithm of the Sérsic index n and the host galaxy magnitude is -0.77 at a significance of 99.9%. We explain the observed relationship between dE galaxy luminosity and the inner logarithmic profile slope γ′ as a by-product of the correlation between luminosity and Sérsic index n. Including, from the literature, an additional 232 dE and E galaxies spanning 10 mag in absolute magnitude M, the dE galaxies are shown to display a continuous sequence with the brighter E galaxies, such that μ0 brightens linearly with M until core formation causes the most luminous (M B ≲ -20.5) E galaxies to deviate from this relation. The different behavior of dE and E galaxies in the M-〈μ〉e (and M-μe diagram and the 〈μ〉e-log R e diagram has nothing to do with core formation and is in fact expected from the continuous and linear relation between M and μ0, and M and log n.
A new empirical model for the structural analysis of early-type galaxies, and a critical review of the Nuker model
Creators: name: Graham, Alister
name: Erwin, Peter
name: Trujillo, I.
name: Ramos, A. Asensio
Publisher: name: Swinburne
Year: 2024

description: The Nuker law was designed to match the inner few (∼3-10) arcseconds of predominantly nearby (∼30 Mpc) early-type galaxy light profiles; it was never intended to describe an entire profile. The Sérsic model, on the other hand, was developed to fit the entire profile; however, because of the presence of partially depleted galaxy cores, the Sérsic model cannot always describe the very inner region. We have therefore developed a new empirical model consisting of an inner power law, a transition region, and an outer Sérsic model to connect the inner and outer structure of elliptical galaxies. We have additionally explored the stability of the Nuker model parameters. Surprisingly, none are found to be stable quantities; all are shown to vary systematically with a profile's fitted radial extent, and often by more than 100%. Considering elliptical galaxies spanning a range of 7.5 mag, we reveal that the central stellar densities of the underlying host galaxies increase with galaxy luminosity until the onset of core formation, detected only in the brightest elliptical galaxies. We suggest that the so-called power-law galaxies may actually be described by the Sérsic model over their entire radial range.
Multicentric Papillary Thyroid Carcinoma: Stratification for Treatment
Creators: name: Diaz-Cano, Salvador J.
Publisher: name: figshare
Year: 2015
Subjects: subject: Medicine
subject: Pathology
subject: Cancer
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences

description: Tumor stage is the main prognosticator of differentiated thyroid carcinomas, but it needs further stratification for multicentric neoplasms (most frequently papillary thyroid carcinomas, PTC), which frequently present as foci smaller than 1cm and are considered by default as high-risk tumors. Not all cases of multicentric PTC should be considered of high risk and they should be stratified to avoid unnecessary radioiodine ablation in selected cases. Currently, there are known variables for this stratification: size and number of tumor foci, clonal patterns, and specific markers of aggressive behaviour (infiltrative growth, BRAF mutation). In a near future, the identification of a gene expression pattern associated with a higher risk of recurrence would allow us to focus more aggressive treatment appropriately.
Annual and large-scale variation in breeding output of Greylag geese Anser anser in Iceland
Creators: name: Jónsson, Jón Einar
name: Gunnarsson, Tómas Grétar
name: Guðjónsson, Helgi
name: Stefánsson, Halldór Walter
name: Snæþórsson, Aðalsteinn Örn
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Cancer
subject: Sociology
subject: FOS: Sociology
subject: Ecology
subject: FOS: Biological sciences
subject: Earth and Environmental Sciences
subject: Evolutionary Biology
subject: Biotechnology
subject: Neuroscience
subject: Medicine

description: Capsule Large-scale variation in breeding output of Greylag geese Anser anser is negligible across Iceland but detectable variation is likely related to spring temperature.Aims To identify large-scale spatial and annual variation in breeding parameters to support sustainable utilization and conservation of Greylag geese that are a quarry species in Iceland and the UK.Methods In 2012 and 2013, a total of 360 Greylag nests were visited across Iceland and timing of breeding, egg sizes and clutch sizes were measured. In addition, 888 Greylag families were surveyed in the same period to estimate large-scale variation in brood sizes.Results Timing of nest initiation varied significantly between parts of the country and nesting started on average on 30 April in West and South Iceland, but considerably later in cooler parts of Iceland, North Iceland (10 May) and East Iceland (20 May). In 2012, clutch sizes were similar between areas but in 2013, East Iceland had a smaller mean clutch size than South and West Iceland. Overall, mean clutch sizes ranged from four to six eggs. Mean brood size varied from three to five goslings per pair between regions, where East Iceland was found to have the smallest brood size on average while West and North Iceland had the largest brood sizes. Brood size was the most variable parameter between years.Conclusion Regional variation in timing of nest initiation and clutch size across Iceland suggests that variation in these parameters is related to ambient temperatures and this is supported by comparison of data from Iceland and other countries. The South and West parts of Iceland are the warmest and this study suggests that conditions for early breeding may be most favourable there. A more long-term study of the links between demography and environmental parameters is needed for sustainable management of the Greylag population.
Spatial data, analysis approaches, and information needs for spatial ecosystem service assessments: a review
Creators: name: Andrew, Margaret E.
name: Wulder, Michael A.
name: Trisalyn A. Nelson
name: Coops, Nicholas C.
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Information and Computing Sciences
subject: Biological Sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Earth and Environmental Sciences

description: Operational use of the ecosystem service (ES) concept in conservation and planning requires quantitative assessments based on accurate mapping of ESs. Our goal is to review spatial assessments of ESs, with an emphasis on the socioecological drivers of ESs, the spatial datasets commonly used to represent those drivers, and the methodological approaches used to spatially model ESs. We conclude that diverse strategies, integrating both spatial and aspatial data, have been used to map ES supply and human demand. Model parameters representing abiotic ecosystem properties can be supported by use of well-developed and widely available spatial datasets. Land-cover data, often manipulated or subject to modeling in a GIS, is the most common input for ES modeling; however, assessments are increasingly informed by a mechanistic understanding of the relationships between drivers and services. We suggest that ES assessments are potentially weakened by the simplifying assumptions often needed to translate between conceptual models and widely used spatial data. Adoption of quantitative spatial data that more directly represent ecosystem properties may improve parameterization of mechanistic ES models and increase confidence in ES assessments.
Galactic bulges from Hubble Space Telescope near-infrared camera multi-object spectrometer observations: The lack of r1/4 bulges
Creators: name: Balcells, Marc
name: Graham, Alister
name: Domínguez-Palmero, Lilian
name: Peletier, Reynier F.
Publisher: name: Swinburne
Year: 2024

description: We use Hubble Space Telescope (HST) near-infrared imaging to explore the shapes of the surface brightness profiles of bulges of S0-Sbc galaxies at high resolution. Modeling extends to the outer bulge via bulge-disk decompositions of combined HST-ground-based profiles. Compact, central unresolved components similar to those reported by others are found in ~84% of the sample. We also detect a moderate frequency (~34%) of nuclear components with exponential profiles that may be disks or bars. Adopting the Sérsic r1/n functional form for the bulge, none of the bulges have an r 1/4 behavior; derived Sérsic shape indices are (n) = 1.7 ± 0.7, For the same sample, fits to near-infrared ground-based profiles yield Sérsic indices up to n = 4-6. The high n of ground-based profiles are the result of nuclear point sources blending with the extended light of the bulge because of seeing. The low Sérsic indices are not expected from violent relaxation in mergers.
Sun-sensor geometry effects on vegetation index anomalies in the Amazon rainforest
Creators: name: Maeda, Eduardo Eiji
name: Lênio Soares Galvão
Publisher: name: Taylor & Francis
Year: 2015
Subjects: Biological Sciences
Neuroscience
Physics
Engineering

description: The capacity of orbital sensors to monitor vegetation functioning and phenology in the Amazon rainforest using vegetation indices (VIs) has been broadly challenged in recent years. In particular, recent studies indicate that artifacts associated with sun-sensor geometry are likely to have major influence on the variability of some VIs. Nevertheless, the magnitude of this influence and the impacts on different VIs are still poorly understood. This study evaluates the scaling and magnitude of the phase angle variation effects on six different VIs, as well as in the individual spectral bands used for computing these indices. Our results show a significant and consistent relationship between phase angle and VI anomalies. The scaling (i.e. the change rate of VI anomaly with phase angle) of this relationship varies according to spectral bands and VIs. Median anomalies in individual Moderate Resolution Imaging Spectroradiometer (MODIS) bands showed a variation of up to −0.045 degree−1, while median VI anomaly variations reached −0.047 degree−1. The scaling of all relationships was shown to be constant throughout the year. Average phase angle values in the Amazon basin ranged from approximately 25 degrees in October to 41 degrees in June. Such variation can, on average, cause changes of up to 0.75 in some VIs, therefore having major impacts on the interpretation of the relationships between VIs and forest phenology.
Evidence for the involvement of cysteine proteases in the regulation of methyl jasmonate-induced cell death in grapevine
Creators: name: Repka, V.
Publisher: name: VITIS - Journal of Grapevine Research
Year: 2015

description: A new system to study programmed cell death (PCD) in plants is described. Grapevine (Vitis vinifera L., cv. Limberger) leaves and suspension cells were induced to undergo a form of cell death that mimics the hypersensitive response (HR) by treatment with a lipid-derived molecule, methyl jasmonate (MeJA). This chemical-induced cell death was accompanied by the characteristic features of apoptosis in animal and plant cells, such as typical changes in nuclear morphology, the fragmentation of the nucleus and protoplast collapse. Local and ectopic treatment of grapevine leaves with phenylmethylsulfonyl fluoride (PMSF), leupeptin, and especially with a specific inhibitor of cysteine proteases, E-64, inhibited MeJA-induced cysteine protease activity and blocked PCD triggered by 50 muM MeJA. These results indicate that proteolysis plays a crucial role in MeJA-induced apoptosis and that this type of PCD can be regulated by activity poised between the cysteine protease and the cysteine protease inhibitor.
description: VITIS - Journal of Grapevine Research, Vol. 41 No. 3 (2002): Vitis
Developmental processes, polyamine composition and content of fruiting cuttings of Vitis vinifera L.: Responses to nitrogen deficiency
Creators: name: Gény, L.
name: Broquedis, M.
Publisher: name: VITIS - Journal of Grapevine Research
Year: 2015

description: Fruiting cuttings of cv. Cabernet Sauvignon exposed to nitrogen (N) deficiency showed alterations of the N and phosphorus content, the number of berries per plant and berry characteristics at maturity. Conjugated and bound polyamines changed in various tissues at different and critical stages of development and responded strongly to N deficiency. At anthesis the conjugated and bound spermidine content in flowers and the N supply were closely and inversely correlated, while conjugated and bound forms of putrescine responded in the opposite way. However, in these organs N deficiency led to a high content of bound spermidine and a marked decrease of conjugated putrescine. At fruit set, N deficiency was associated with a high content of bound diaminopropane in berries. In ripe berries free putrescine and the N supply were inversely correlated.
description: VITIS - Journal of Grapevine Research, Vol. 41 No. 3 (2002): Vitis
Polygalacturonase isozymes produced during infection of the grape berry by Botrytis cinerea
Creators: name: Cabanne, C.
name: Donèche, B.
Publisher: name: VITIS - Journal of Grapevine Research
Year: 2015

description: This paper focuses on polygalacturonase activity during the early stages of infection of the grape berry by the fungus Botrytis cinerea. While a weak polygalacturonase activity was measured in healthy, ripe Semillon grape berries, in infected berries the activity increased rapidly with infection. Liquid isoelectrofocalisation was used to separate polygalacturonase isozymes in healthy and infected berries. In healthy berries, we found 4 isozymes of polygalacturonase with pI values of 4.2, 4.9, 6.0 and 8.0. In infected berries, we have separated up to 7 isozymes of polygalacturonase in infected berries. The first isozymes detected had acidic pIs; basic isozymes of polygalacturonase with considerable activity were separated. The most active isozyme had a pI of 8.8. At the onset of infection by B. cinerea, polygalacturonase activity consists of a large number of isozymes, most of which are identical with the isozymes previously described.
description: VITIS - Journal of Grapevine Research, Vol. 41 No. 3 (2002): Vitis
title: Diet analysis of bats killed at wind turbines suggests large-scale losses of trophic interactions
Creators: name: Scholz, Carolin
name: Voigt, Christian C.
Publisher: name: Universität Potsdam
Year: 2024
Subjects: subject: 570 Biowissenschaften; Biologie

description: Agricultural practice has led to landscape simplification and biodiversity decline, yet recently, energy-producing infrastructures, such as wind turbines, have been added to these simplified agroecosystems, turning them into multi-functional energy-agroecosystems. Here, we studied the trophic interactions of bats killed at wind turbines using a DNA metabarcoding approach to shed light on how turbine-related bat fatalities may possibly affect local habitats. Specifically, we identified insect DNA in the stomachs of common noctule bats (Nyctalus noctula) killed by wind turbines in Germany to infer in which habitats these bats hunted. Common noctule bats consumed a wide variety of insects from different habitats, ranging from aquatic to terrestrial ecosystems (e.g., wetlands, farmland, forests, and grasslands). Agricultural and silvicultural pest insects made up about 20% of insect species consumed by the studied bats. Our study suggests that the potential damage of wind energy production goes beyond the loss of bats and the decline of bat populations. Bat fatalities at wind turbines may lead to the loss of trophic interactions and ecosystem services provided by bats, which may add to the functional simplification and impaired crop production, respectively, in multi-functional ecosystems.
description: Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe; 1358
The 'photometric plane' of elliptical galaxies
Creators: name: Graham, Alister
Publisher: name: Swinburne
Year: 2024

description: The Sérsic (r1/n) index n of an elliptical galaxy (or bulge) has recently been shown to correlate strongly (r= 0.8) with the central velocity dispersion of a galaxy. This index could therefore prove extremely useful and cost-effective (in terms of both telescope time and data reduction) for many fields of extragalactic research. It is a purely photometric quantity which apparently not only traces the mass of a bulge but has additionally been shown to reflect the degree of bulge concentration. This paper explores the affect of replacing the central velocity dispersion term in the Fundamental Plane with the Sérsic index n. Using a sample of early-type galaxies from the Virgo and Fornax clusters, various (B-band) ‘Photometric Planes’ were constructed and found to have a scatter of 0.14-0.17 dex in log re, or a distance error of 38-48 per cent per galaxy (the higher values arising from the inclusion of the S0 galaxies). The corresponding Fundamental Plane yielded a 33-37 per cent error in distance for the same galaxy samples (i.e. ~15-30 per cent less scatter). The gains in using a hyperplane (i.e. adding the Sérsic index to the Fundamental Plane as a fourth parameter) were small, giving a 27-33 per cent error in distance, depending on the galaxy sample used. The Photometric Plane has been used here to estimate the Virgo-Fornax distance modulus; giving a value of 0.62 ± 0.30 mag[cf. 0.51 ± 0.21, Hubble Space Telescope (HST ) Key Project on the Extragalactic Distance Scale]. The prospects for using the Photometric Plane at higher redshifts appears promising. Using published data on the intermediate redshift cluster Cl 1358 + 62 (z= 0.33) gave a Photometric Plane distance error of 35-41 per cent per galaxy.
TO'LOV TIZIMLARI XAVFINI BOSHQARISH VA ULARNI MINIMALLASHTIRISH
Creators: name: Axmedov, Miraziz
Publisher: name: Zenodo
Year: 2024

description: To'lov tizimlarida xavflarni minimallashtirish uchun muallif xavflarning oldini olish va ularga javob berish strategiyasini ishlab chiqish, ma'lumotlarni himoya qilishning zamonaviy texnologiyalarini joriy etish, xodimlarni o'qitish va tizimni doimiy monitoringini o'z ichiga olgan keng qamrovli yondashuvni taklif etadi. U to'lov tizimlarining barqaror ishlashini ta'minlash uchun xavfsizlik standartlariga rioya qilish va regulyatorlar va boshqa bozor ishtirokchilari bilan hamkorlik qilish muhimligini ta'kidlaydi.
Optimal Synergistic Extraction of Cr(VI) from Aqueous Acidic Media Using Alamine 300/Aliquat 336 and Di-n-octyl Amine/Tributyl Phosphate Mixed Reagents
Creators: name: Senol, Aynur
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Plant Biology
subject: FOS: Biological sciences
subject: Cancer
subject: Mathematics
subject: FOS: Mathematics
subject: Biological Sciences
subject: Ecology
subject: Chemistry
subject: Earth and Environmental Sciences
subject: Evolutionary Biology
subject: Biotechnology
subject: Pharmacology
subject: Molecular Biology
subject: Medicine
subject: Physics
subject: Biochemistry

description: Data for the extraction of chromium(VI) from aqueous sulfate solutions by Alamine 300/Aliquat 336 and di–n–octyl amine/tributyl phosphate (DOA/TBP) have been subjected to formulation of an optimization structure for an effective Cr(VI) separation based on the derivative variation method. Both experimentally and analytically defined optimum Cr(VI) removal efficiencies are ranging about 83–99%, 71–93%, and 60–73% for Alamine 300/Aliquat 336, DOA/TBP, and DOA, respectively. Modeling efforts based on mass-action law methodology and non-homogeneous differential approach have shown considerable success yielding a 10% mean error, and satisfies established limiting behavior of the physical event.
Triaxial stellar systems following the r1/n luminosity law: An analytical mass-density expression, gravitational torques and the bulge/disc interplay
Creators: name: Trujillo, I.
name: Asensio Ramos, A.
name: Rubiño-Martîn, J. A.
name: Graham, Alister
name: Aguerri, J. A L
name: Cepa, J.
name: Gutiérrez, C. M.
Publisher: name: Swinburne
Year: 2024

description: We have investigated the structural and dynamical properties of triaxial stellar systems whose surface brightness profiles follow the r1/n luminosity law - extending the analysis by Ciotti, who explored the properties of spherical r1/n systems. A new analytical expression that accurately reproduces the spatial (i.e., deprojected) luminosity density profiles (error less than 0.1 per cent) is presented for detailed modelling of the Se?rsic family of luminosity profiles. We evaluate both the symmetric and the non-axisymmetric components of the gravitational potential and force, and compute the torques as a function of position. For a given triaxiality, stellar systems with smaller values of n have a greater non-axisymmetric gravitational field component. We also explore the strength of the non-axisymmetric forces produced by bulges with differing n and triaxiality on systems having a range of bulge-to-disc ratios. The increasing disc-to-bulge ratio with increasing galaxy type (decreasing n) is found to greatly reduce the amplitude of the non-axisymmetric terms, and therefore reduce the possibility that triaxial bulges in late-type systems may be the mechanism or perturbation for non-symmetric structures in the disc. Using seeing-convolved r1/n-bulge plus exponential-disc fits to the K-band data from a sample of 80 nearby disc galaxies, we probe the relations between galaxy type, Sersic index n and the bulge-to-disc luminosity ratio. These relations are shown to be primarily a consequence of the relation between n and the total bulge luminosity. In the K band, the trend of decreasing bulge-to-disc luminosity ratio along the spiral Hubble sequence is predominantly, though not entirely, a consequence of the change in the total bulge luminosity; the trend between the total disc luminosity and Hubble type is much weaker.
title: Cycle 2014 : Expériences des transformations politiques
Publisher: name: EHESS
Year: 2014

description: Séminaire du Fonds de dotation de l'EHESS 2014 avec le concours du Laboratoire d'Excellence TEPSIS   Qu'est-ce qu'une société, si nous sommes des individus  autonomes?     Comment l'idée d'un collectif d'individus et  d'individualités produit-elle du politique aujourd'hui ? Et sous quelles formes  ?