Miracle-dz/UniFAR-FTUs huggingface dataset:
Magnetic fields in central stars of planetary nebulae

Most of the planetary nebulae (PN) have bipolar or other non-spherically symmetric shapes. The presence of a magnetic field in the central star may be the reason for this lack of symmetry, but observational works published in the literature have so far reported contradictory results. We try to correlate the presence of a magnetic field with the departures from the spherical geometry of the envelopes of planetary nebulae. We determine the magnetic field from spectropolarimetric observations of ten central stars of planetary nebulae. The results of the analysis of the observations of four stars was previously presented and discussed in the literature, while the observations of six stars, plus additional measurements for a star previously observed, are presented here for the first time. All our determinations of magnetic field in the central planetary nebulae are consistent with null results. Our field measurements have a typical error bar of 150-300 G. Previous spurious field detections obtained with FORS were probably due to the use of different wavelength calibration solutions for frames obtained at different position angles of the retarder waveplate. Currently, there is no observational evidence for the presence of magnetic fields with a strength of the order of hundreds Gauss or higher in the central stars of planetary nebulae.
Hierarchical Parametrization of Triangulated Surfaces

The problem of creating global parametrizations of triangulated surfaces is fundamental for many applications in computer-aided geometric design (CAGD). Although several solutions to this problem exist, most of them become considerably slow as the number of triangles increases, because large, ill-conditioned problems have to be solved. We show how the hierarchical representation of a triangulated surface can be exploited to establish a strategy that is similar to multigrid methods and guarantees fast convergence rates.
Efficient Embedded Model Predictive Vibration Control via Convex Lifting

This paper presents an efficient real-time implementation of embedded model predictive control, adopted in the context of active vibration control with the objective of minimizing the tip deflection of lightly damped cantilever beams. In particular, we focus on memory and time-efficient explicit solutions of the associated constrained optimal control problems that are easily implementable on low-end embedded hardware. To this end, we exploit the concept of convex lifting and show how it can be used to devise low-complexity, regionless piecewise affine controllers without any loss of optimality and performance. The efficiency of this constructive procedure is quantified via an extensive complexity analysis, evidenced by a successful practical deployment and optimal vibration control performance using a family of 32-bit ARM Cortex-M-based microcontroller platforms.
Reported Childhood Abuse and Stress Reactivity in Psychosis: A Conceptual Replication and Exploration of Statistical Approaches

A previous study observed that reported childhood abuse moderated psychotic and emotional reactivity to stress among patients with non-affective psychotic disorder. However, that study used a type of analysis unsuited for skewed data. This study aimed (1) to replicate the study and (2) to examine whether we would obtain similar results using a statistical approach better suited to skewed data. Fifty-nine patients with non-affective psychotic disorder were examined for up to 6 days using an intensive diary method to assess levels of negative affect, psychosis, and daily-life stress. A mixed-linear regression largely replicated earlier findings, but a two-component analysis failed to replicate the moderating effect of reported childhood abuse. These results illustrate the importance of exploring different statistical approaches to skewed data. They may also indicate that stress sensitization does not offer a complete account for the effect of reported childhood abuse on psychotic symptom severity.
Speech denoising in the presence of Impulsive Noise

This work addresses speech denoising problem in the presence of impulsive noise in transform domains. The impulsive noise, in this work, is modeled by an unknown sparse vector so that it can be actively suppressed. The speech signal is sparsely represented by the wavelet domain. To achieve the simultaneous speech recovery and the noise suppression, a joint estimation is devised based on the fact they have sparse representations in different domains. To efficiently solve the problem, the alternating direction method of multipliers (ADMM) is adopted to obtain the solution. Simulation results demonstrate the superior performance of the proposed approach.
Effects of preculture with sucrose and ABA on cell suspensions water status and its relation with vitrification resistance.

Foram realizadas mudancas nas relacoes hidricas celulares durante a fase de precultura afim de se entender os mecanismos de endurecimento celular pela vitrificacao durante a criopreservacao. Suspensoes celulares de laranja e cenoura foram cultivadas em meio contendo 0,4 M sacarose (Yw = -1,45 MPa) e 5 mgL-1 de ABA (MT Yw = -0,73 MPa e MS Yw = -0,48 MPa). A precultura nesse meio nao promoveu um significante decrescimo na viabilidade celular, entretanto, aumentou a sobrevivencia das celulas a exposicao a PVS2 e a nitrogenio liquido. Quando as celulas foram incubadas em meio contendo 0,4 M de sacarose, o Yw celular decresceu rapidamente igualando-se ao Yw do meio, enquanto o turgor foi tambem severamente reduzido ou desapareceu. Ao mesmo tempo o Ys comecou a decrescer e apos 48h de tratamento em meio com baixo Yw , o turgor foi recuperado pela osmoregulacao ate atingir o mesmo valor que as celulas tinham no inicio do experimento. A precultura em meio contendo ABA tambem causou um decrescimo no Yw celular em menor intensidade que aquela verificada quando a precultura foi realizada em meio com baixo Yw. O aumento na sobrevivencia celular ao choque osmotico e vitrificacao nao pode ser atribuido unicamente ao acumulo quantitativo de solutos uma vez que a precultura aumentou significativamente a sobrevivencia com o pre-tramento com PVS2 e exposicao a nitrogenio liquido. Estes resultados sugerem que o acumulo qualitativo de determinados solutos poderia ser o evento responsavel pela aumento a tolerância a exposicao ao PVS2 e ao nitrogenio liquido.
Changes in the Nitrate Assimilation and Ascorbic Acid Content of Spinach Plants Treatmented with Nutrient Solutions Containing High Nitrogen and Low Potassium

This study was conducted to determine the physiological differences betweenhealthy and wilted plants with respect to nitrate assimilation and ascorbic acid content. Wilting was artificially induced in spinach plants by treating the seeds with nutrient solution containing high nitrogen and low potassium. The plants were cultured in different plots 4 types of media: 1N-1P-1K (control), 6N-1P-0K (0K), 6N-1P-0.5K (0.5K), and 6N-1P-2K (2K). The rate of wilting among the plants was as follows: control, 0%; 2K, 10%; 0.5K, 40%; and 0K, 70%. This shows that under high nitrogen conditions, the lower the amount of potassium provided, higher was the rate of wilting. There were no differences in plant growth among the plants treated with different levels of potassium under high nitrogen conditions.The nitrate content in both the leaves and the roots was higher in plants grown under high nitrogen media than those in the control. Furthermore, the nitrate level decreased with increasing potassium concentration. The ascorbic acid content of spinach under high nitrogen conditions was lower than those of the control.
Use of platelet-rich plasma in regenerative medicine: technical tools for correct quality control

Background/aims Platelet-rich plasma (PRP) injections are used in sports medicine and have been the subject of increased clinical interest. However, there have been very few reports of the composition of initial whole blood and the final PRP product. The objective of this study was to provide technical tools to perform a correct characterisation of platelets, leucocytes and red blood cells (RBCs) from whole blood and PRP. Methods Blood and PRP were obtained from 26 healthy volunteers and prepared according to the varying parameters encountered within PRP process preparation and quantification (harvesting method, anticoagulant used, sampling method, counting method). Concentrations were measured at t=0, t=1, t=6 and t=24 hours. Results Sampling of blood in Eppendorf tubes significantly decreased platelet concentration over time, whereas sampling in Microvette EDTA-coated tube kept platelet concentration stable until 24 hours. A non-significant difference was observed in platelet counts in PRP with impedance (median (IQR): 521.8 G/L (505.3–524.7)) and fluorescence (591.5 G/L (581.5–595.8)) methods. Other studied parameters did not influence platelet concentrations in blood or PRP samples. Leucocytes and RBC counts were similar whatever the anticoagulant, sampling, harvesting and counting methods used for both blood and PRP samples. Conclusions Systematic sampling of blood and PRP in EDTA-coated tubes for quality control is recommended. The use of a validated counter for PRP sample should also be taken into account.
Feasibility Investigation of Low Cost Highly Functional Hardware Options for a Community Designed Social Robot

This document outlines the potential hardware options for the socially intelligent Human Robot Interaction (HRI) robot Quori. The robot design is to be driven by the community and thus these designs will serve as technically feasible options to discuss with the community and gain feedback. Three hardware design sections are discussed: Expressive head, gesturing arm, and mobile base (or table top mounted). It is important that the designs be modular, expandable and low cost.
Interactive comment on “ Ground surface temperatures indicate the presence of permafrost in North Africa ( Djebel Toubkal , High Atlas , Morocco ) ” by Gonçalo

The research article “Ground surface temperatures indicate the presence of permafrost in North Africa (Djebel Toubkal, High Atlas, Morocco)” presents new observations and thoughts on the permafrost occurrence in the High Atlas. Due to the particularly poor data basis concerning permafrost and related phenomena in North Africa, any new measurements and findings on the potential permafrost distribution are of high importance, not only for the research community but also from an environmental and
THE EFFECT OF STOCKING DENSITY AND FEEDER TYPES ON THE PERFORMANCE OF GROWING RABBITS UNDER CONDITIONS PREVAILING IN CAMEROON.

Weaned rabbits fed with a maize based diet supplemented with Guatemala grass were used in a factorial experiment to compare the effects of stocking rate (5 vs 10 per m²) and feeder type on production parameters and mortality over an 8 week period under Cameroon conditions. Stocking rate did not affect (p>0.05) feed intake, feed conversion efficiency or mortality rates. Increasing the number of animals from 2 to 4 in a cage resulted in a significant decrease in daily weight gain (P 0.05) effect on feed intake, growth rate, feed conversion efficiency or mortality rate. However, feed wastage was significantly (P 0.05) any of the parameters measured. The interaction between sex, feeder type, and cage density had a significant (P<0.01) effect only on feed wastage. The results of the study showed that rearing rabbits in pairs per cage and using a cylindrical metallic tin feeder would enhance faster growth and reduce the amount of feed wasted.
Morphological and immunochemical characterization of the pollen grains of Chenopodium album L. (Chenopodiaceae) in a temperate urban area in Argentina

Chenopodium album is a very polymorphic, cosmopolitan, annual herb that grows spontaneously in modified soils in wasteland in the outlying urban zones of Bahia Blanca. In this city, the flowering period is mainly during February and March, which coincides with the highest concentrations of this pollen type in the atmosphere of the city. The objective of this study was to characterize the pollen grains of Chenopodium album, both morphologically and immunochemically, that were obtained from three different zones in the urban area of Bahia Blanca. Samples were collected from the three separate zones in the city that were far apart. The structure and morphology of the grains were analyzed using light and electron microscopy. The protein and antigenic profiles were studied with Tricine-SDS-PAGE and western blot with a polyclonal rabbit serum, respectively. The morphological analysis showed significant differences in relation to the diameters of the pollen grains in one of the studied areas. Differences in the protein expression were seen for the same area although the antigenic profile was conserved. The variations in the morphology and the protein profile may be caused by the effect of environmental conditions on the pollen, and the presence of urban contaminants from vehicular traffic.
Electron-Hole Correlation in Quantum Dots under a High Magnetic Field (up to 45 T)

Powered by TCPDF (www.tcpdf.org) This material is protected by copyright and other intellectual property rights, and duplication or sale of all or part of any of the repository collections is not permitted, except that material may be duplicated by you for your research use or educational purposes in electronic or print form. You must obtain permission for any other use. Electronic or print copies may not be offered, whether for sale or otherwise to anyone who is not an authorised user. Cingolani, R. ; Rinaldi, R. ; Lipsanen, H. ; Sopanen, M. ; Virkkala, R. ; Maijala, K. ; Tulkki, Jukka; Ahopelto, J.; Uchida, K. ; Miura, N. ; Arakawa, Y. Electron-hole correlation in quantum dots under a high magnetic field (up to 45T)
Cloud-based solutions to the levelling education in physics in the context of Latvian education

With the rapid development of new technologies, the priority directions and goals of education are also changing. As the intensity of life is constantly growing, it requires new solutions. There is a high demand for not only different teaching materials, but also for a different organization of the learning process, a different educational policy, as well as the opportunity to quickly and continuously introduce new solutions. In 2017, “i-Zvaigzne.lv” publishing company presented a new cloud-based solution [1] "Online Tests in Physics for Grade 12" and [2] "Physics : High School course! " These are extensive electronic collections of online learning tasks, tests, tasks solution examples and tasks for self-testing in the Latvian language. The aim of the research - to theoretically analyse and empirically justify the use of cloud services in the context of levelling education .
COMPARING LANGUAGE USE AND NETWORK STRUCTURE

We develop an approach for exploring questions regarding language use and con4 nections between people in social networks. In particular, we investigate community structure and 5 language usage in the network composed of the most followed ninety-nine users in Twitter. Our goal 6 is to measure the relation between a community of users and the words employed by those users. We 7 accomplish the investigation using k-means clustering to group users based on word choice, and we 8 use modularity maximization and InfoMap clustering to find communities based on network connec9 tions. Our study illustrates how to mathematically analyze and interpret language use within social 10 network structure. 11
Mobile Application and E-Classes for Increasing theAvailability of Information for Visually Impaired Persons

The aim of this paper is to describe a software application that converts Mobile SMSs into Braille script with special emphasis on special symbols so that visually impaired people will also be able to read mobile messages and we have also introduced the concept of e-classes for blinds which increases the availability of information for them. At the time of receiving incoming text messages, this application allows user to select the option to convert these text messages into the Braille and then it scans these text messages, converts these messages’ text into Braille script using ASCII-Braille encoding and sends them to the electronic Braille reader or Braille Embosser attached via USB port or bluetooth so that it can be either embossed on paper or 1 can be read directly by Electronic Braille Reader. This application is implemented using J2ME which makes use of it generic because today most of the mobile phones are java enabled. This application also maintains the mobility because devices used here are portable without any role of PC. For measuring the accuracy of this software, we have tested it on over about 100 messages and it provided on an average 90% accurate result when messages do not contain any multimedia content. Index Terms ASCII-Braille Encoding, Braille, Braille Transcription, E-class for blinds, Mobile SMS
The Effects of Catch-and-Release Angling on the Growth and Survival of Juvenile White Seabass Captured on Offset Circle and J-Type Hooks

Abstract Despite the growing number of recreational anglers targeting white seabass Atractoscion nobilis in California, no information is available on the mortality rates of juveniles following catch and release. We captured juvenile white seabass (430–577 mm total length) with 4/0 offset circle hooks (n = 113) or 4/0 J-type hooks (n = 108) or with a net (control, n = 30) to investigate the effect of hook type on anatomical hook location. We also examined how hook location affected growth and survival for 90 d following release. Offset circle hooks penetrated the lip region significantly more frequently (73%) than did J-type hooks (41%). Hook location was directly correlated with mortality; all mortalities involved hook damage to the visceral region. A 10% postrelease mortality rate was observed for fish caught on both offset circle and J-type hooks. All mortalities occurred within 5 d postrelease. Survival was enhanced when deeply embedded hooks were left in place rather than removed from the visceral ti.
DEVELOPMENT OF LIQUID FORMULATION FOR THE DUAL PURPOSE OF CROP PROTECTION AND PRODUCTION

Intensive commercial farming involves excessive use of chemical fertilizers and pesticides. It is feared that practice of using chemical fertilizers and pesticides continually would result in gradual aggravation of soil fertility. Use of agriculturally important microorganisms in different combinations is the only solution for restoration of soils. A bio formulation using humic acid and a suitable microorganism namely, Pseudomonas fluorescens has been developed to replace chemical fertilizers. This liquid formulation in addition to facilitates long shelf life, zero contamination, no need of carriers, convenience of handling, storage and transportation has easy to use with irrigation. The mixed formulation of humic acid along with the microorganism namely Pseudomonas fluorescens can be used for the dual purpose viz., crop protection and enhanced production. The liquid bio-formulation was tested and compared for viability as well as its inhibitory characteristics against Fusarium oxysporum, a fungus which cause wilt of tomato. Field studies were conducted for two crop varieties- radish and tomato. Cell viability tests were carried out for the bio-formulations by plate count method. The results revealed that both in vivo and in vitro the formulation containing humic acid showed better support for the viable cells as well as leafing characteristic in pot kept in field as compared to the control. The formulation was able to inhibit the wilt of tomato caused by Fusarium thus confirming its protective property.
Parental substance abuse and child maltreatment : a study of child protective services

Child maltreatment continues to be a serious and prevalent issue that affects a significant portionof the population each year, and has been shown to predict negative short and long term effectson victims, and the family as a unit. Much of the literature concerning child maltreatmentfocuses on Child Protective Services (CPS), a department charged with the responsibility ofintervening in cases of child abuse and neglect. One of the responsibilities of CPS is to preventrecidivism (i.e., the reoccurrence of child maltreatment after an initial finding of neglect orabuse), which transpires in an alarming number of cases. Previous literature has focused on riskfactors of recidivism, including child and parent variables. Substance use has been identified as afactor that often, but not always, has been found to predict both maltreatment severity andrecidivism. The current study aimed to investigate the presence of both alcohol and illicitsubstance abuse in a CPS sample, and understand its relationship to abuse severity, removal fromthe home, and recidivism. Findings of this study showed that neither substance nor alcohol abusewas predictive of severity as measured by CPS. However, families where parents abused alcoholand other drugs (AOD) or just substances were more likely to be removed from the home.Additionally, this research identified substance abuse as a significant predictor in both removalfrom the home and recidivism. The results of this research may provide information into furtherinvestigation of links between substance use, child maltreatment, and other parental variables.
Modification of Even-A Nuclear Mass Formula

In this paper we obtain an empirical mass formula of even-A nuclei based on residual proton-neutron interactions. The root-mean-squared deviation (RMSD) from experimental data is at an accuracy of about 150 Kev. While for heavy nuclei, we give another formula that fits the experimental data better (RMSD ≈ 119 Kev). We have successfully described the experimental data of nuclear masses and predicted some unknown masses (like 200Ir not involved in AME2003, the deviation of our predicted masses from the value in AME2012 is only about 82 keV). The predictive power of our formula is more competitive than other mass models.
Egalitarianism: An Evolutionary Perspective

Two parties bargaining over a pie, the size of which is determined by their previous investment decisions. Investment costs are heterogeneous. The bargaining rule is sensitive to investment behavior. Two games are studied which differ for the considered sociopolitical structure: communal property in one case and private property in the other. We hereby show that in both games when a unique stochastically stable outcome exists a norm of investment and a norm of surplus division must coevolve. While the investment norm always supports the efficient investment profile, the surplus division norm may differ among these games depending on the size of investment cost gap. Under private property only the egalitarian surplus division evolves. Under communal property instead two different surplus division norms may evolve: the egalitarian one and an inegalitarian norm. We show that no cap to payoffs inequality emerges under private property while an inequality payoff cap endogenously evolves under communal property. The games have been proposed to explain the social norms used in modern hunter-gatherer societies.