Miracle-dz/UniFAR-FTUs huggingface dataset:
Stochastic gravito-inertial modes discovered by CoRoT in the hot Be star HD 51452

Context. Be stars are rapidly rotating stars with a circumstellar decretion disk. They usually undergo pressure and/or gravity pulsation modes excited by the κ-mechanism, i.e. an effect of the opacity of iron-peak elements in the envelope of the star. In the Milky Way, p-modes are observed in stars that are hotter than or equal to the B3 spectral type, while g-modes are observed at the B2 spectral type and cooler. Aims. We observed a B0IVe star, HD 51452, with the high-precision, high-cadence photometric CoRoT satellite and high-resolution, ground-based HARPS and SOPHIE spectrographs to study its pulsations in great detail. We also used the lower resolution spectra available in the BeSS database. Methods. We analyzed the CoRoT and spectroscopic data with several methods: Clean-NG, FreqFind, and a sliding window method. We also analyzed spectral quantities, such as the violet over red (V/R) emission variations, to obtain information about the variation in the circumstellar environment. We calculated a stellar structure model with the ESTER code to test the various interpretation of the results. Results. We detect 189 frequencies of variations in the CoRoT light curve in the range between 0 and 4.5 c d−1. The main frequencies are also recovered in the spectroscopic data. In particular we find that HD 51452 undergoes gravito-inertial modes that are not in the domain of those excited by the κ-mechanism. We propose that these are stochastic modes excited in the convective zones and that at least some of them are a multiplet of r-modes (i.e. subinertial modes mainly driven by the Coriolis acceleration). Stochastically excited gravito-inertial modes had never been observed in any star, and theory predicted that their very low amplitudes would be undetectable even with CoRoT. We suggest that the amplitudes are enhanced in HD 51452 because of the very rapid stellar rotation. In addition, we find that the amplitude variations of these modes are related to the occurrence of minor outbursts. Conclusions. Thanks to CoRoT data, we have detected a new kind of pulsations in HD 51452, which are stochastically excited gravito-inertial modes, probably due to its very rapid rotation. These modes are probably also present in other rapidly rotating hot Be stars.
Diabetic Foot Ulcers — Treatment and Prevention

Diabetic foot ulcers are a growing problem in the diabetic community. Globally, diabetes mellitus has grown to pandemic proportions, affecting 194 million people worldwide and is expected to increase in prevalence to 344 million by the year 2030 [1]. Of these pa‐ tients, between 2 and 6% will develop a diabetic foot ulcer (DFU) yearly [2]. The onset of a DFU often precipitates a complex chain of events that may lead to limb loss. The longterm outcome for a diabetic patient after a major limb amputation is grave, with 50% of these patients deceased at 5 years [3].
Nematode-Borne Plant Viruses

Although it had been known since the early part of the twentieth century that soil could be a source of virus infection to newly established plants, the first direct demonstration that soil nematodes transmit plant viruses was not reported until 1958 (Hewitt et al., 1958). Quickly thereafter, other examples of virus transmission by nematodes were reported (Harrison and Cadman, 1959; Jha and Posnette, 1959), leading to the current acceptance of 30 nematode species that are known to transmit 15 viruses (Tables 26.1 and 26.2). The viruses are of two types that previously were referred to as either nepoviruses, with spherical particles, or tobraviruses, with rod-shaped particles. The name “nepovirus” originates from the contraction of “nematode-transmitted virus with polyhedral particles” (Cadman, 1963), while “tobravirus” is derived from the virus name Tobacco rattle virus. Recent changes to the classification of nematode-transmitted spherical viruses mean that not all of these viruses now are placed in the genus Nepovirus. Nevertheless, to simplify the discussion, we will continue to refer to this collection of viruses as nepoviruses. A comprehensive review detailing the biology of virus-vector nematodes was written by Taylor and Brown (1997). We build on this review to include new information about the molecular mechanism of virus transmission by nematodes, and we discuss current work that aims to control plant diseases caused by these viruses and their vector nematodes. Plant Viruses Transmitted by Nematodes
Hierarchies among northern harrier (Circus cyaneus) harems and the costs of polygyny

(1) A polygynous population of northern harriers was studied for 4 years in New Brunswick to establish the costs and benefits to females within harems. (2) Polygynous harems of up to five females were observed, and clear hierarchies in clutch size and reproductive success were apparent in each year. Alpha females raised more fledglings than any other harem female. (3) Seasonal declines could explain the tendency of polygynous females to lay smaller clutches but not their reduced reproductive success relative to monogamous females. (4) Later-settling polygynous females suffered higher rates of predation than either monogamous or cr females. This could not be explained by differences in nest site quality; nor could female inexperience be cited, since older females predominated in harems. (5) Reduced success of polygynous females was best explained by male provisioning rates. Alpha females received significantly more prey items per day than any other harem female. (6) We surmise that the increased predation of later (p/, y, and 6) harem nests was also a result of low male provisioning rates; later-settling females were forced to forage by themselves and to leave their nests unattended. (7) We contend that a skewed sex ratio is not the prime reason for the evolution of polygyny, as suspected in other harrier populations, but that differences in male quality or controlled resources contribute to the crossing of the polygyny threshold.
Heinrich events: Massive late Pleistocene detritus layers of the North Atlantic and their global climate imprint

Millennial climate oscillations of the glacial interval are interrupted by extreme events, the so‐called Heinrich events of the North Atlantic. Their near‐global footprint is a testament to coherent interactions among Earth's atmosphere, oceans, and cryosphere on millennial timescales. Heinrich detritus appears to have been derived from the region around Hudson Strait. It was deposited over approximately 500 ± 250 years. Several mechanisms have been proposed for the origin of the layers: binge‐purge cycle of the Laurentide ice sheet, jökulhlaup activity from a Hudson Bay lake, and an ice shelf buildup/collapse fed by Hudson Strait. To determine the origin of the Heinrich events, I recommend (1) further studies of the timing and duration of the events, (2) further sedimentology study near the Hudson Strait, and (3) greater spatial and temporal resolution studies of the layers as well as their precursory intervals. Studies of previous glacial intervals may also provide important constraints.
The Elderly Living in Nursing Homes: Cross - Culture Comparison

The purpose of this study was to understand and compare elder's daily life in living in nursing homes in America and Taiwan. Authors used a focused ethnography method for data collection and observation of the elderly's daily life in nursing homes of Taiwan and another nursing home in America. Then, a cross-cultural comparison was presented. One common theme that was revealed in the study was that ”the nursing home is a place to be idle”. There were four domains under the major theme: surrounding environment, residents, recreation and privacy and autonomy. The environment domain was categorized to two subcategories, internal environment and external environment. The external environment of the two cultures' nursing homes is different, but the internal environment has similarities and dissimilarities. Recreations for residents are very similar for both nursing homes, but nursing home residents in the U.S. have more space for activities than nursing home residents in Taiwan. In addition, health care providers in both cultures try to respect residents' privacy and residents have some autonomy, but American nursing home residents have more autonomy than residents in nursing home of Taiwan. In sum, the findings contribute to knowledge of elders' daily life living in nursing homes by demonstrating differences and similarities between American and Chinese elders in Taiwan. The study raises questions about the effects of institutional, professional and cultural factors on the disposition to care for elders. (Tzu Chi Nursing Journal, 2004; 3:2, 41-49.)
CONSTRUCTION OF A MODIFIED LIVE HP-PRRS VIRUS VACCINE AND AN ATTENUATED LISTERIA VACCINE VECTOR USING REVERSE GENETICS

The development of reverse genetics systems for the manipulation of viral and bacterial genomes has provided platforms for identifying virulence genes, studying pathogenesis and developing vaccines. Replication-competent vaccines (e.g., modified live virus (MLV) vaccines and replicating viral/bacterial vectors) are considered the most efficacious approach for vaccine development. We constructed replication-competent candidate vaccines for two viral diseases in pigs via reverse genetics. The first vaccine we designed is to protect against highly pathogenic porcine reproductive and respiratory syndrome virus (HP-PRRSV). HP-PRRSV can cause high mortality in pigs of all ages. Vaccines to protect pigs from HP-PRRSV are not commercially available in the US. According to previous studies, the non-structural protein (NSP) coding region of HP-PRRSV is closely related to the high mortality rate and the structural protein (SP) coding region contributes to the induction of broadly protective neutralizing antibodies. We created a chimeric PRRSV, of which the SP coding region was derived from HP-PRRSV and NSP coding region was derived from a low-pathogenic strain. This chimeric PRRSV caused similar CPE in cells as parental viruses, but had slower growth kinetics. We hypothesize that this chimeric virus will have a low pathogenicity and could serve as a candidate vaccine that can provide protection against HP-PRRV. The second vaccine vector is a modified Listeria innocua (L.inn), a non-pathogenic strain of Listeria. Genetically related Listeria monocytogenes (L.m) is a well-known intracellular pathogen that encodes specialized virulent determinants facilitating its intracellular growth and spread. Our goal is to make L.inn a vaccine vector that can deliver classical swine fever (CSF) viral antigen into intracellular environments by complementation of L.inn with selected L.m virulence genes necessary for intracellular survival and induction of a robust immune response. In this study, we constructed a shuttle vector pHT-E2 that can express CSFV antigen E2 in L.inn. We cloned the plcA-prfA operon of L.m virulence gene cluster (vgc) into pHT-E2, which enhanced the expression of E2 in L.inn. In future studies, we plan to clone additional L.m virulence genes into the shuttle vector to increase immunogenicity of this recombinant L.inn and test its ability to protect pigs from CSFV.
Superelevation and overspill control secondary flow dynamics in submarine channels

In subaerial and submarine meander bends, fluid flow travels downstream in a helical spiral, the structure of which is determined by centrifugal, hydrostatic, baroclinic, and Coriolis forces that together balance frictional stresses generated by the flow. The sense of rotation of this helical flow, and in particular, whether the near bed flow is directed toward the inner bank, e.g., “river-normal,” or outer bank, e.g., “river-reversed,” is crucial to the morphodynamic evolution of the channel. However, in recent years, there has been a debate over the river-normal or river-reversed nature of submarine flows. Herein, we develop a novel three-dimensional closure of secondary flow dynamics, incorporating downstream convective material transport, to cast new light on this debate. Specifically, we show that the presence of net radial material transport, arising from flow superelevation and overspill, exerts a key control on the near bed orientation of secondary flow in submarine meanders. Our analysis implies that river-reversed flows are likely to be much more prevalent throughout submarine-canyon fan systems than prior studies have indicated.
Regional Labor Market Dynamics, Housing, and Migration

The aim of this study is to explore the dynamics of regional labour markets in terms of migration flows. In particular, the study explores the impact of labour markets and housing markets on migration. The internal and the external re-organisations of regional labour markets are shown to be related. An increase in internal turnover within establishments in regional labour markets is found to increase net-migration. This effect arises mainly from a reduction in out-migration. Housing markets constitute binding constraints for migration flows through housing prices and the share of owner-occupancy housing. The results imply that an increase in regional housing prices and a large share of owner-occupancy housing discourages net-migration to a region by reducing inmigration. The out-migration rate remains largely unaffected by housing markets.
Estimating recent sedimentation rates using 210 PB on the example of morphologically complex lake (Upper Lake Raduńskie, N Poland)

Upper Lake Raduñskie is a classical channel lake with a typical complexity of lake basin morphology. This study presents the results of 210Pb measurements in four cores of recent sediments taken from different parts of the lake. The unsupported 210Pb activity plotted on a logarithmic scale against the cumulative dry mass decreased almost linearly. Sedimentation rates were determined from the mean slope of the profile (CF:CS model). A diversity of calculated values was significant, the highest value was found in the core RAD02/6 located in the deepest part of the lake. Both 210Pb inventories and fluxes were higher than that expected from atmospheric fallout estimated for this part of Europe. Factors influencing differences between atmospheric fallout and sediment record may include inputs from the catchment and sediment focusing, which seems to be the main reason of sedimentation rates diversity in morphologically complex lakes. GEOCHRONOMETRIA Vol. 23, pp 21-26, 2004 – Journal on Methods and Applications of Absolute Chronology
The Impact of Low Intensity Laser Irradiation on Lung Cancer Stem Cell Viability and Proliferation

Background: Cancer stem cells or tumour initiating cells are cells that have been attributed to metastatic drive and tumour genesis. These cells contribute to cancer recurrence, metastasis, aggressiveness and resistance to therapy. Laser irradiation has been shown to have a diverse range of clinical applications including wound healing and photo dynamic therapy (PDT). Middle infrared (MIR) radiation has shown to inhibit cellular proliferation and induce morphological changes to the cytoskeletal dynamics of A549 lung cancer cells. Recent studies done using Low Intensity Laser Irradiation (LILI) using near-infrared light with a wavelength of 636 nm and fluence between 515 J/cm 2 on adipose derived stem cells (ADSCs) which are adult mesenchymal stem cells (MSCs), have shown to have an increase in proliferation, viability and differentiation into smooth muscle cells. The effects of LILI on cancer stem cells have yet to be elucidated. Methodology: Isolated A549 lung cancer stem cells were exposed to a wavelength of 636 nm and a fluence of 5 or 10 J/cm 2 , where after cellular responses were monitored after several time intervals to evaluate proliferation and viability with the view to establish the wavelength and fluence at which LILI causes an effect on proliferation and viability after a specific incubation time. Discussion: This study assists in the understanding of the effects of LILI on isolated lung cancer stem cells by evaluating the results produced and comparing the different effects of different laser parameters on these cells.
New hydrogen-deficient (pre-) white dwarfs in the Sloan Digital Sky Survey Data Release 10

We have detected 21 new, very hot hydrogen-deficient (pre-) white dwarfs (spectral types O(He), hot DO, PG1159) in the Data Release 10 of the Sloan Digital Sky Survey. We present the results of non-local thermodynamic equilibrium (non-LTE) model-atmosphere analyses. The seven PG1159 stars have effective temperatures and surface gravities in the ranges Teff = 100 000–140 000 K and log g = 6–7.5. The hottest one is a new member of the rare hybrid-PG1159 subtype, indicating the presence of residual hydrogen. The ten new hot DOs span Teff = 65 000–120 000 K and log g = 7.5–8. Carbon abundances were derived and it is found that the PG1159 star values (C/He = 0.33–0.03 by number) and the DO values (<0.0004–0.01) cover distinct but adjacent ranges. With the discovery of four new O(He) stars (Teff = 80 000–100 000 K, log g = 5–5.5, C/He = 0.002–0.01), we double the number of known members of this rare spectral class. One of them is particularly interesting because it is unusually rich in C, N, O, and Si. Unexpected problems arose with the DOs because many He ii lines of every other star are so deep that they cannot be matched by any model. This is most conspicuous in the case of one object which exhibits the occurrence of ultrahigh-ionization metal features, a hitherto unexplained phenomenon that is known from a disquieting large fraction of hot DOs.
Characterization of Off Stoichiometric Silicon Oxide by Thermo, Cathode, and Photo-Luminescence

Off Stoichiometric Silicon Oxide, or Silicon Rich Oxide (SRO), obtained by LPCVD was studied by Photo, Cathode and Thermo luminescence. The Silicon excess in the SRO films varied between 2 and 12 % at. In the deposited samples, the luminescence was observed in the blue region by all techniques. This is an indication that the high temperature used during the deposit produces point defects. After annealing at 1100 °C in nitrogen during 3 hours, the blue emission is still observed suggesting that the nanopoints responsible of the blue emission are not affected. However, after annealing, the photoluminescence of SRO 30, with 5 % of silicon excess, shows drastic increase of the red emission contrarily to the cathodoluminescence, which, after annealing the blue emission, has a big increment. This contradictory observation cannot be explained as a simple emission of oxide defects, rather a mixed model that includes the effect of charge trapping characteristic of the SRO and coulombic interaction, is proposed. Still, more work has to be done to have a detailed mixed model that predicts the emission of the SRO films obtained by LPCVD.
Status and trends in the alien flora of Corsica

This article summarizes and analyses some of the data published in Flora Corsica (Jeanmonod & Gamisans, 2007) in order to characterize the alien vascular plant flora of the island. The data analysed focus on different aspects of the alien flora such as diversity (species richness), abundance, lifeforms, vegetation belts, habitats and biogeographical origins. The results show that the alien species richness is currently high, representing 16.5% of the total flora, amongst which 37.5% are naturalized. The penetration of this flora occurs mainly at lower altitudes, and is still weak or absent in the higher altitude vegetation belts whereas it has increased over time within natural closed habitats. Over the last 11 years, the species richness of xenophytes has increased by 18.1%, which corresponds to an increase of 23.0% of the naturalized plants. Moreover, 24.8% of the alien taxa have increased in abundance. A scenario highlighting the trends of the introduced flora, and that includes issues of native biodiversity conservation, is proposed based on the results. The special case of invasive species is also considered, and their exponential increase on Corsica is highlighted. Other aspects of the alien flora, such as its taxonomic spectrum and biogeographical origins, are also analysed and are, whenever possible, compared with those of other geographical regions, particularly from the Mediterranean (Sardinia, Balearic Islands) and Continental Europe.
Prevalence of Social Networks Addiction among Ethiopian Youths

A curiosity and mystique around teens and youths behavior has long been a cultural obsession. The world of social networks has captured the youths’ attention because of their ability to embrace new things quickly as they are digital natives, super communicators and multi-task performers. This study explores how far the Ethiopian youths are addicted to social networks. The objective of this research is to analyze the age and gender dynamics of youths regarding social networks addiction. There are three target population of this study: teen cyber café visitors, cell-phone using older youths and laptop using professional youths. For the first target population, systematic random sampling is used whereas for the second and third snowball sampling is applied. The sample size (n=264) comprises of questionnaire (n=252) supplemented by interview from key respondents (n=12). The data is collected and analyzed keeping in view the age and gender dynamics and the result is presented.
A study of evapotranspiration from a Douglas fir forest using the energy balance approach

Energy balance measurements of evapotranspiration from a young Douglas fir forest are reported for a period of 18 days in July 1970 when soil water was not limiting. Peak daily evapotranspiration rates characteristically occurred 2–3 hours after solar noon, and evapotranspiration showed a short-term independence from net radiation. This behavior is interpreted as being a consequence of the large forest roughness. Daily evapotranspiration and net radiation were, however, well correlated. Values of surface diffusion resistance calculated from Monteith's combination formula are presented. Daytime values showed significant day-to-day differences, and an attempt to define a potential evapotranspiration rate by assuming a constant daytime surface resistance was not successful. Comparison of evapotranspiration measurements with a potential evaporation formula for wet surfaces developed by Priestley and Taylor suggests that evaporation of intercepted water proceeds 20% more rapidly than evapotranspiration from the nonwetted canopy.
Return to work after breast cancer diagnosis: An observational prospective study in Brazil

In North America and Europe, return‐to‐work (RTW) rates vary among breast cancer (BC) survivors, from 24% to 66% and from 53% to 82% at 6 and 36 months after diagnosis, respectively. To date, there is a lack of data on RTW rates after BC diagnosis in Latin America. Therefore, the primary objectives of this study were to define RTW rates at 12 and 24 months after BC diagnosis and to identify the factors associated with RTW in this population.