Miracle-dz/UniFAR-FTUs huggingface dataset:
Two distinct spin liquid states in a layered cubic lattice

We construct a family of short-range resonating-valence-bond wave functions on a layered cubic lattice, allowing for a tunable anisotropy in the amplitudes assigned to nearest-neighbour valence bonds along one axis. Monte Carlo simulations reveal that four phases are stabilized over the full range of the anisotropy parameter. They are separated from one another by a sequence of continuous quantum phase transitions. An antiferromagnetic phase, centred on the perfect isotropy point, intervenes between two distinct quantum spin liquid states. One of them is continuously deformable to the two-dimensional U(1) spin liquid, which is known to exhibit critical bond correlations. The other has both spin and bond correlations that decay exponentially. The existence of this second phase is proof that, contrary to expectations, neither a bipartite lattice structure nor a conventional Marshall sign rule is an impediment to realizing a fully gapped quantum spin liquid.
Tuning Bandgaps of Mixed Halide and Oxide Perovskites CsSnX3 (X=Cl, I), and SrBO3 (B=Rh, Ti)

Perovskites have recently attracted interest in the field of solar energy due to their excellent photovoltaic properties. We herein present a new approach to the composition of lead free perovskites via mixing of halide and oxide perovskites that share the cubic ABX3 structure. Using first-principles calculations through Density Functional Theory, we systematically investigated the atomic and electronic structures of mixed perovskite compounds composed of four cubic ABX3 perovskites. Our result shows that the B and X atoms play important roles in their band structure. On the other hand, their valence bands contributed by O-2p, Rh-4p, and Ti-3p orbitals, and their electronic properties were determined by Rh-O and Ti-O bonds. With new understandings of the electronic properties of cubic halide or oxide perovskites, we lastly combined the cubic perovskites in various configurations to improve stability and tune the bandgap to values desirable for photovoltaic cell applications. Our investigations suggest that the mixed perovskite compound Cs2Sn2Cl3I3Sr2TiRhO6 produced a bandgap of 1.2 eV, which falls into the ideal range of 1.0 to 1.7 eV, indicating high photo-conversion efficiency and showing promise towards solar energy applications.
TROPOPAUSAS DUPLAS TRANSPORT PROCESSES ASSOCIATED WITH DOUBLE TROPOPAUSES

This work aims to study the dynamic origin of the air that is found between double tropopauses. To do so, a Lagrangian dispersion model, FLEXPART was tested and run in backward mode for ten days, for every month of January between 1980 and 2010, for particles released twice a day between double tropopauses at selected sites. The resulting mean trajectories and potential vorticities were studied for single tropopause (ST) and double tropopause (DT) events separately and their results were compared. The results showed that, for DT events, the relative altitude and potential vorticity for the mean trajectories were both lower than for ST events, with a higher percentage of tropospheric particles in the DT cases. It was also observed that trajectories arriving between DTs tend to originate at lower latitudes. The results show that the poleward excursions of subtropical and tropical air accompanied by tropospheric intrusions into the lower extratropical stratosphere are a main mechanism for the occurrence of double tropopuase structures.
PROTONATION OF CITRACONIC AND GLUTACONIC ACID IN PERCHLORIC ACID MEDIA ORIGINAL SCIENTIFIC PAPER

The protonation process of citraconic and glutaconic acid in perchloric acid media was followed using the method of UV spectroscopy. The observed changes in the UV spectra of investigated acids confirmed that the protonation process in perchloric acid with concentration from 5 to 10 mol/dm occurred. Glutaconic acid behaved as weak organic base in perchloric acid media and existed in its monoprotonated form. On the other hand, citraconic acid existed in its protonated form and as protonated anhydride at higher perchloric acid concentration. Using the absorbance data the thermodynamic dissociation constants were calculated applying the methods of Yates and McClelland, Bunnett and Olsen, and the “excess acidity” function method. The solvatation parameters m, m and φ were evaluated, as well. In order to correct the medium effect the method of characteristic vector analysis was applied. The possible site where the protonation may take place was discussed using the partial atomic charge values determined according to AM1 and PM3 semiempirical methods.
Comparative Adherence Trajectories of Oral Fingolimod and Injectable Disease Modifying Agents in Multiple Sclerosis

Background: Oral fingolimod is convenient to use than injectable disease modifying agents (DMAs) in patients with multiple sclerosis (MS). However, the existing literature regarding the comparative adherence trajectories between oral fingolimod and injectable DMAs is limited. Objective: To compare the adherence trajectories between oral DMA, fingolimod, and injectable DMAs in patients with MS. Methods: A retrospective longitudinal study was conducted using adults (≥18 years) with MS (ICD-9-CM: 340 and a DMA prescription) from the IBM MarketScan Commercial Claims and Encounters Database between 2010 and 2012. Patients were grouped into oral fingolimod or injectable DMA users based on the index DMA among patients with MS. The annual DMA adherence trajectories, based on the proportion of days covered (PDC), were examined using group-based trajectory modeling (GBTM) during the one-year follow-up period after treatment initiation. Multivariable multinomial logistic regression using stabilized inverse probability treatment weights (IPTW) was performed to assess the association between the DMA route of administration (Oral vs Injectable) and the adherence trajectory groups. The balance of covariates between oral and injectable DMAs before and after IPTW was checked against a standardized difference threshold of 0.25. Results: The study cohort consisted of 1,700 MS patients who were initiated with oral (15.8%) or injectable (84.2%) DMAs between 2010 and 2012. The adherence rates (PDC≥0.8) in oral fingolimod and injectable DMA users were found to be 64.7% and 50.8%, respectively. The GBTM grouped individuals in the study cohort into three adherence trajectories – rapid discontinuers (23.5%), complete adherers (49.9%), and slow decliners (26.6%). The multinomial logistic regression model with stabilized IPTW revealed that oral fingolimod users had higher odds to be a complete adherer (adjusted odds ratio [AOR]: 2.78, 95% CI: 1.85–4.16) or a slow discontinuer (AOR: 2.62, 95% CI: 1.70–4.05) than injectable DMA users. Conclusions: Oral DMA fingolimod was associated with better adherence than injectable DMAs across group-based trajectories. Further research is warranted to evaluate the adherence trajectories with newer oral DMAs introduced in the last decade for MS. multiple sclerosis patients, based on adherence to DMAs, into – rapid discontinuers 23.5%, complete adherers 49.9%, and slow decliners 26.6%. Oral fingolimod was associated with better adherence trajectories than injectable DMAs. Oral fingolimod users had nearly three times higher odds to be in completely adherent or slow declining trajectory than injectable DMA users.
Visual laughter synthesis: Initial approaches

Visual laughter synthesis is a challenging task that was only rarely explored and empirical investigations are scarce. For the purpose of building a virtual agent able to laugh naturally we exploit different animation techniques such as a procedural animation or based on motion capture and we apply them to visual laughter synthesis. At the moment we focus on three approaches: procedural animation based on manual annotation of facial behavior; motion capture driven animation and animation generated from automatic facial movements detection. For the purpose of this study we use the Greta agent (Niewiadomski et al., 2011) that can be driven by both high-level anatomically inspired facial behavior description based on the Facial Action Coding System (FACS; Ekman, et al., 1978) or low-level facial animation parameterization (FAPs) that is a part of MPEG-4 standard (Ostermann, 2002) for facial animation. We also use two video corpora: AVLC database (Urbain et al., 2011) containing mocap, video and audio data of 24 subjects showing spontaneous amusement laugh responses and Queen's University Belfast’s dataset of same sex interaction dyads during the watching of funny stimuli. We present all approaches in detail.
Thehigh-a⁄nityphosphate transporterPst is avirulence factor for Proteusmirabilis during complicatedurinary tract infection

Thehigh-a⁄nityphosphate transporterPst is avirulence factor for Proteusmirabilis during complicatedurinary tract infection Sandra M. Jacobsen, Mary C. Lane, Jean M. Harro, Mark E. Shirtliff & Harry L. T. Mobley Department of Microbiology and Immunology, School of Medicine, University of Maryland – Baltimore, Baltimore, MD, USA; Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI, USA; and Department of Biomedical Sciences, Dental School, University of Maryland – Baltimore, Baltimore, MD, USA
PREVALENCE AND DETERMINANTS OF ILLNESS ANXIETY DISORDER AMONG MEDICAL STUDENTS IN KING

Background: Illness anxiety Disorder is Highly prevalent among Medical Students and is associated with Functional impairment and psychosocial disability. Given the increasing prevalence of illness anxiety among medical students, it is imperative that we acquire adequate knowledge on this important topic to prevent The Associated distress that may interfere with medical students’ studies and enhance the awareness of how it may represent a poorly recognized occupational disorder. Objectives: To identify the prevalence of illness anxiety and its determinants among medical students in King Abdulaziz University, Saudi Arabia, 2018. Subjects and Methods: A Cross-sectional study was conducted including 300 participants randomly selected from All Medical students in the 4, 5, 6 academic years at King Abdulaziz University Medical college. A self-administered questionnaire was distributed. Illness anxiety was assessed using The Short Health Anxiety Inventory. Setting: College of Medicine, King Abdulaziz University Jeddah, Saudi Arabia. Main Results: Among the 300 participants, 15.2% of them had IAD. prevalence was higher among 4 year students [21.0%] compared to the 5 year [16.5%], and the 6 year [7.9%, p = 0.018]. In addition, the highest GPA scores [4.5-5] had a borderline significant association [p = 0.051] with IAD prevalence, with higher prevalence among those in high and low GPA categories, compared to those in medium GPA. Increased IAD prevalence was significantly associated with having a previous personal [27.8% versus 12.8%, p = 0.005] or family [40.0% versus 13.6%, p = 0.001] history of a mental health disorder. No other demographic variable was associated with IAD prevalence. Conclusion: Health-related anxiety in medical students is an unrecognized phenomenon in the Saudi academic community. since almost one in every seven medical students experienced illness anxiety symptoms in our sample in Jeddah, it is essential for medical schools to establish a screening scheme that would serve early detection of IAD and offer referral and psychiatric care for the students to prevent the resulting psychosocial disability and functional impairment.
The uncertain future of the Norway lobster ﬁsheries in the North Sea calls for new management strategies

A. , Berkenhagen, and Stelzenmüller, The uncertain future of the Norway lobster ﬁsheries in the North Sea calls for new management strategies. – ICES Journal of Marine Science, : –. Nephrops ( Nephrops norvegicus ) is an economically valuable target species in the North Sea. Although individual Nephrops populations are scattered, the crustacean is managed regionally by the European Union (EU). The spatial competition for ﬁsheries in the North Sea is growing especially due to expanding oﬀshore wind farms (OWF) and newly implemented marine protected areas (MPA). Moreover, the Brexit aﬀects the availability of EU ﬁshing quotas and adds to the overall uncertainty EU ﬁshers face. We compare landings and catches to scientiﬁcally advised quantities and perform an overlap analysis of ﬁshing grounds with current and future OWFs and MPAs. Furthermore, we explore the German Nephrops ﬂeet using high-resolution spatial ﬁshing eﬀort and catch data. Our results conﬁrm earlier studies showing that Nephrops stocks have been ﬁshed above scientiﬁc advice. Present OWFs and MPAs marginally overlap with Nephrops ﬁshing grounds, whereas German ﬁshing grounds are covered up to % in future scenarios. Co-use strategies with OWFs could mitigate the loss of ﬁshing opportunities. Decreased cod quotas due to Brexit and worse stock conditions, lowers Germany’s capability to swap Nephrops quotas with the UK. We support the call for a new management strategy of individual Nephrops populations and the promotion of selective ﬁshing gears.
RF Pulse Design for Parallel Excitation in MRI.

ACKNOWLEDGEMENTS I have many people to thank. First, I would like to thank Doug Noll, for taking me on as a student five years ago. He is the best mentor I have ever had, and I look up to him as a model of what an engineer should be. He is creative, open-minded, friendly and excited about his work. I was blessed to have him as an advisor, and I am excited to be working in a field with people like him in it. I would also like to thank Jeff Fessler, from whom I have also learned a ton, and who I would also like to emulate. I never left a meeting with Jeff without a new idea or direction. His dedication to his students and his ability to switch between modes of thinking for each students' project is amazing. Chun-yu Yip has been like my lab-brother. We started working together when I first joined the lab, and I know my constant questioning must have been annoying at first, but I have learned a lot from him, and I feel as though we have grown up as MR engineers together. His skills as a communicator and his attention to detail make him a great scientist, who will surely do wonderful things in his career. I would also like to thank the rest of my senior lab-mates and Yoon Chung Kim, for helping me out whenever I had a problem with the scanner, or my computer, or anything else. You guys have been great and supportive friends. I would also like to thank Luis, Eve, Scott, Chuck and Keith, who have also helped me a great deal, and whose tireless work keeps our lab running like a dream. ii I would like to thank Eric Michielssen, for serving on my committee, and for being a great EM teacher whose classes I have truly enjoyed taking, and Tom Chenevert, for serving on my committee and providing constructive feedback on my research. I am grateful to Troy Stevens, whom I worked for at General Dynamics just before grad school. Troy piqued my interest in research and encouraged me to continue with school. I also have to thank my dogs, Billy and Sugar, for providing comic relief at home, and reminding me that life is pretty much silly most of the time. Rachael, my wife, has done so much to support me over …
Numerical Model of Piezoelectric Lateral Electric Field Excited Resonator as Basic Element of Acoustic Sensors

Nowadays, piezoelectric lateral electric field excited resonators are frequently used for development of various acoustic sensors. But, the adequate theory of such resonators is absent. In this paper, the numerical method of calculation of characteristics of the acoustic oscillations in the piezoelectric lateral electric field excited resonators is developed. The developed method is based on the finite element analysis and allows computing the distribution of the components of the mechanical displacement in the piezoelectric plate and electric potential in the piezoelectric plate and surrounding vacuum at arbitrary frequency of the exciting field. This method allows setting various boundary conditions on various parts of a plate surface, including a condition of mechanical damping of oscillations. This allows calculating the frequency dependence of the real and imaginary parts of the electrical impedance/admittance of the resonator. We analyzed a piezoelectric lateral electric field excited resonator, which is based on a 0.5 mm-thick X-cut lithium niobate plate. Two infinitesimally thin metallic electrodes with width of 5 mm were deposited on top side of the plate. The electrodes were deposited in such a way that the lateral field was oriented along the crystallographic Y-axis. Calculations of electric impedance were carried out for various values of a gap in range 1 3 mm between electrodes. These results are in quantitative agreement with experimental data. A brief description of experimental set up is also presented.
Clinical outcomes of transepithelial photorefractive keratectomy with epithelial ablation targeting actual epithelial thickness vs default laser platform values

In transepithelial PRK, refractive outcome depends little on preexisting corneal epithelial thickness. There is a concern about the contraction of OZ, especially in lower intended ablations. Purpose: To investigate the clinical outcomes of transepithelial photorefractive keratectomy (tPRK) with actual epithelial thickness vs default software values. Setting: Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran. Design: Prospective controlled study. Methods: Patients with refractive spherical error of −1.50 to −7.00 diopters (D) and refractive astigmatism up to 4.00 D were consecutively enrolled and divided into 2 groups: group 1 undergone tPRK with actual central and peripheral epithelial thickness input in right eyes, group 2 undergone tPRK with actual central and 10 mm higher peripheral epithelial thickness in right eyes. Left eyes in both groups underwent tPRK with default protocol. Outcome measures were induced refractive error, achieved optical zone (OZ), and wasted stromal tissue. Results: 83 patients were included in this study. Mean ± SD of induced spherical equivalent was +0.15 ± 0.39 D and +0.01 ± 0.35 D in right and left eyes of group 1 (P = .01) and +0.04 ± 0.22 D and +0.03 ± 0.23 D in right and left eyes of group 2 (P = .75), respectively. There was no statistically significant difference between wasted tissue between right and left eyes in group 1 and group 2 (P = .77 and P = .49, respectively). OZ contraction was significantly higher in right compared with left eyes in group 1 (P = .05), but not in group 2 (P = .95). Conclusions: In tPRK, refractive outcomes, wasted tissue, and OZ contraction depend little on preexisting corneal epithelial thickness in corneas with normal range epithelial thickness. However, OZ contraction may be a concern in lower amount of ablations.
Phenolic composition, antioxidant and anti-fibrotic effects of Sesbania grandiflora L. (Agastya) – An edible medicinal plant

Background: Sesbania grandiflora (S. grandiflora/Agastya) is an edible Indian traditional medicinal plant widely used as dietary supplements and possesses various pharmacological activities. Aims: The aim is to evaluate aqueous ethanol extract of S. grandiflora leaves and flowers for its anti-oxidant and anti-proliferative and anti-fibrotic effects using activated rat hepatic stellate cell (HSC)-T6. Material and methods: The antioxidant activities of these plant extracts were assessed as per the standard methods and the total phenolic and flavonoid contents were examined by folin ciocalteu reagent and colorimetric methods respectively. The anti-proliferation assay was conducted by using a cyto X cell viability assay kit. The anti-fibrotic effect was investigated by measuring the hydroxyproline content and gene expression analysis of the two main fibrogenic cytokines in activated HSC-T6 cells: Transforming growth factor-beta (TGF-β) and alpha-smooth muscle actin (α-SMA). Results: The aqueous ethanol extract of S. grandiflora leaves showed the highest antioxidant activity in a concentration-dependent manner. These findings were well correlated with the total phenols and flavonoids contents. The aqueous ethanol extract of S. grandiflora leaf and flower significantly reduced the proliferation of activated HSC-T6 cells. Regarding the anti-fibrotic effect, the hydroxyproline content was significantly reduced in a concentration-dependent manner during the extract treatment. In gene expression analysis, the treatment without extracts drastically up-regulated the fibrogenic cytokines (TGF-β and α-SMA), whereas the treatment with extracts significantly reduced these alterations. Conclusion: Results of present study revealed the significant antioxidant potential of the aqueous ethanol extract of S. grandiflora leaves and flowers. Among two extracts, S. grandiflora leaves demonstrated greater antioxidant, anti-fibrotic capacity with lower inhibiting concentrations corresponding to 50% values than S. grandiflora flowers.
Helical scaling in turbulence

The influence of the mean helicity on the turbulence spectra in a stratified incompressible fluid and a compressible nonentropic gas is considered. The helicity is taken into account by analyzing the transformation properties of a Hopf-like equation for a characteristic functional. It is shown that a self-similar region with cascade transfer of the helicity over the energy spectrum, i.e., a region of helical scaling that can be observed in natural and laboratory experiments, forms in the large-scale region. An E k-713 energy spectrum and an arbitrary twopoint semi-invariant are obtained in the asymptotic limit. An analog of the Corrsin-Obukhov spectrum is obtained in the helical case. A quasisound energy spectrum is obtained in the compressible case for an arbitrary adiabatic exponent and transforms into an E k-3 spectrum in the shock-wave limit. O 1996 American Institute of Physics. [S 1063-776 1(96)02707-21
Réduction de dimension dans les modèles linéaires généralisés : Application à la classification supervisée de données issues des biopuces

Une des principales caracteristiques des donnees issues des biopuces reside dans le fait qu'on dispose d'un nombre d'individus n tres faible devant un grand nombre de genes p. Un des enjeux majeurs du traitement statistique de ces donnees est l'analyse discriminante a but decisionnel. D'un point de vue statistique, ce grand nombre de covariables devant un petit nombre d'observations rend l'analyse discriminante difficile. Une facon de contourner ce « fleau de la dimension » consiste a reduire cette dimension. Dans ce papier, la classification supervisee est vue comme un probleme de regression avec peu d'observations et beaucoup de covariables. Nous proposons deux approches de reduction de dimension. La premiere, de type parametrique, est une extension de la methode «Partial Least Squares» aux modeles lineaires generalises. La deuxieme, de type semi-parametrique, utilise des estimateurs par vraisemblance locale dans les modeles lineaires generalises en indice simple. Nous illustrons la pertinence de ces approches lorsqu'elles sont appliquees a l'analyse de deux jeux de donnees reels: Colon et Leukemia.