Miracle-dz/UniFAR-FTUs huggingface dataset:
Orthogonal Matrices with Zero Diagonal. II

C-matrices appear in the literature at various places; for a survey, see [11]. Important for the construction of Hadamard matrices are the symmetric C-matrices, of order v ≡ 2 (mod 4), and the skew C-matrices, of order v ≡ 0 (mod 4). In § 2 of the present paper it is shown that there are essentially no other C-matrices. A more general class of matrices with zero diagonal is investigated, which contains the C-matrices and the matrices of (v, k, λ)-systems on k and k + 1 in the sense of Bridges and Ryser [6]. Skew C-matrices are interpreted in § 3 as the adjacency matrices of a special class of tournaments, which we call strong tournaments. They generalize the tournaments introduced by Szekeres [24] and by Reid and Brown [21].
Compactifications

Every completely regular space has at least one Hausdorff compactification and much research in Topology has been devoted to methods of constructing the compactifications of completely regular spaces. These methods fall into two general categories: internal methods and external methods. External methods are characterized by their reliance on structures which are not topological or outside the immediate topological structure of the space in question; examples of the former are A. Weil [20] - uniform structures and Yu. Smirnov [15] who uses the proximity structures of Efremovich; using the continuous real-valued functions to produce an embedding of the space serves as an example of the latter.
Aerodynamics of a wing in turbulent bluff body wakes

Abstract The aerodynamics of a stationary wing in a turbulent wake are investigated. Force and velocity measurements are used to describe the unsteady flow. Various wakes are studied with different dominant frequencies and length scales. In contrast to the pre-stall angles of attack, the time-averaged lift increases substantially at post-stall angles of attack as the wing interacts with the von Kármán vortex street and experiences temporal variations of the effective angle of attack. At an optimal offset distance from the wake centreline, the time-averaged lift becomes maximum despite of small amplitude oscillations in the effective angle of attack. The stall angle of attack can reach 20° and the maximum lift coefficient can reach 64 % higher than that in the freestream. Whereas large velocity fluctuations at the wake centreline cause excursions into the fully attached and separated flows during the cycle, small-amplitude oscillations at the optimal location result in periodic shedding of leading edge vortices. These vortices may produce large separation bubbles with reattachment near the trailing-edge. Vorticity roll-up, strength and size of the vortices increase with increasing wavelength and period of the von Kármán vortex street, which also coincides with an increase in the spanwise length scale of the incident wake, and all contribute to the remarkable increase in lift.
Effects of Injury Severity and Brain Temperature on KAT6A Expression after Traumatic Brain Injury in Rats

Traumatic brain injury (TBI) is a major global health concern that contributes to nearly one-third of all trauma-related deaths [1]. Extensive studies have demonstrated noticeable damage to the central nervous system evoked by secondary autodestructive insults after TBI [2–4]. Evidence of the biochemical events after secondary injury has improved the understanding of delayed cell death and brain damage [5,6]. Although some progress has been made in preventive measures and clinical care in early resuscitation, overall neurological recovery and long-term morbidity continue to pose major healthcare challenges [7]. Lysine acetyltransferases catalyze lysine acetylation, a reversible protein modification implicated in a wide variety of disease states [8,9]. The MYST-family histone acetyltransferase lysine acetyltransferase 6A (KAT6A) is involved in various fundamental cellular processes, such as gene transcription [10], cellular apoptosis [11], cardiac septum development [12], memory T-cell diversity [13] and maintenance of normal hematopoietic stem cells [14]. Abnormal regulation of KAT6A histone acetyltransferase activity or aberrant expression of KAT6A has been proposed to be associated with oncogenesis in leukemia [15] and breast cancer [16]. Moreover, a recent study has suggested a possible mechanism in which KAT6A acetylation of lysine 23 of histone H3 results in recruitment of the nuclear-receptor-binding protein TRIM24, which in turn upregulates PI3K/AKT signaling and tumorigenesis [17]. Other studies have confirmed that PI3K/AKT signaling plays an important role in secondary brain injury, through increasing neurogenesis [18], decreasing 1Department of Neurosurgery, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, No. 160 Pujian Road, Shanghai 200127, People’s Republic of China
Physiologic Studies of Dysmetria in Patients with Cerebellar Deficits

ABSTRACT: A feature of cerebellar ataxia is dysmetria, which is characterized by inaccurate movements. Studies of rapid movements at a single joint show prolonged acceleration phases and prolonged initial bursts of EMG activity in the agonist muscle. These two features correlate with each other, suggesting that the prolongation of the neural signal is responsible for the kinematic abnormality. This explains a tendency to hypermetria. Studies of multijoint movements show abnormalities in relative timing of the different joints. During locomotion, knee and ankle motions can be delayed differentially with respect to the gait cycle. Subjects attempting straight-line movements with the arm have systematic deviations that reflect incoordination of the shoulder and elbow with respect to each other. A possible explanation of dysmetria is a failure of sufficient force generation within the necessary time to accomplish a coordinated movement. Another possible explanation is that the cerebellum is responsible for timing of brain functions.
Leisure practice in adolescents and associated factors: implications for care

Lethícia Farias Marcino1 https://orcid.org/0000-0002-1064-2424 Bianca Cristina Ciccone Giacon-Arruda1 https://orcid.org/0000-0002-8433-6008 Elen Ferraz Teston1 https://orcid.org/0000-0001-6835-0574 Albert Schiaveto de Souza1 https://orcid.org/0000-0003-0017-672X Priscila Maria Marcheti1 https://orcid.org/0000-0002-1662-4139 Helder de Pádua Lima2 https://orcid.org/0000-0002-3795-6343 Sonia Silva Marcon3 https://orcid.org/0000-0002-6607-362X Nathan Aratani1 https://orcid.org/0000-0002-4602-7319
Influenza Vaccination with the Risk of SARS-CoV-2 Infection and Severe Illness at the Al-Wafa House for the Care of the Infirm and the Elderly in Massa, Libya

SARS CoV-2 is a pandemic infection that is associated with a significant mortality rate in elderly patients due to severe acute respiratory SARS-CoV-2 infection. When compared to adults, children had a lesser vulnerability to SARS-CoV-2 infection and a milder severity. This could be due to the large number of vaccines. This study was aimed to investigate whether the influenza vaccine may reduce the susceptibility and severity of SARS-CoV-2 infection. 79 inmates and workers at the Al-Wafa House for the Care of the Infirm and the Elderly in the Massa region was enrolled from November 15th to December first, 2020, and were test for SARS-CoV-2 infection by PCR on an oropharyngeal swab and presence of antibodies IgG/IgM against SARS-CoV-2 infection. Clinical data, outcomes, BCG and influenza vaccination status were collected from the medical records. 3% of all subjects were positive for IgG and 16.7% were positive for both IgM and IgG at the same time. While 16.7% were negative for both antibodies. Only 17 workers were vaccinated against influenza on November 1st, all workers had received the BCG vaccination. 78.4% of all workers were positive for SARS-CoV-2 IgG and 16.2% were positive for both SARS-CoV-2 IgM and IgG. Results from the present study found that 87% of all subjects had BCG vaccination, and this might offer at least partial protection against SARS-CoV-2. Results were also found that a relationship between vaccination against influenza and asymptomatic, mild, moderate, and severe symptoms associated with the SARS-CoV-2 were found at 13.54, 25.64, and 20.14 respectively, at a significant level. However, the relationship between vaccination against influenza and moderate symptoms associated with the SARS-CoV-2 infection was not significant. According to a current study, influenza immunization could lower SARS-CoV-2 mortality. Prospective investigations are required to verify this conclusion.
KECK GEOLOGY CONSORTIUM PROCEEDINGS OF THE TWENTY-THIRD ANNUAL KECK RESEARCH SYMPOSIUM IN GEOLOGY

SE ALASKA EXHUMATION OF THE COAST MOUNTAINS BATHOLITH DURING THE GREENHOUSE TO ICEHOUSE TRANSITION IN SOUTHEAST ALASKA: A MULTIDISCIPLINARY STUDY OF THE PALEOGENE KOOTZNAHOO FM. Faculty: Cameron Davidson (Carleton College), Karl Wirth (Macalester College), Tim White (Penn State University) Students: Lenny Ancuta, Jordan Epstein, Nathan Evenson, Samantha Falcon, Alexander Gonzalez, Tiffany Henderson, Conor McNally, Julia Nave, Maria Princen
IMPROVING PASSING LEARNING OUTCOMES IN FOOTBALL GAMES THROUGH PLAYING APPROACHES

Passing skills in sports Football is a basic skill used in moving the ball from one player to another. This research is a Classroom Action Research (CAR) which aims to improve the learning outcomes of passing in the soccer game through the playing approach of Class XI IPA 3 students at SMA Negeri 4 Gorontalo. The subjects of this study were students of class XI IPA 3 SMA Negeri 4 Gorontalo with a total of 34 people with 20 males and 14 females respectively and was a population study. Data collection techniques consisting of observation, interviews, and documentation. The data analysis technique was processed with the formula for individual learning mastery, classical learning mastery, and classical absorption. The results of the observation are the achievement of very poor category 11.77%, not good 29.41%, quite good 17.64%, good 26.47%, very good 14.71%, then followed by cycle I which reached the category of less good 14.71%, good enough 20.59%, good 17.64% , very good 47.06%, then the final result of the second cycle of this study is that it reaches the good criteria of 17.65% and very good 82.35% for the completeness assessment criteria. The evidence from this study concludes that the use of fun playing methods has been able to improve operand learning outcomes in
Tracing Banks’ Credit Allocation to their Funding Costs

We quantify how banks’ funding costs affect their lending behavior directly, and indirectly by feeding back to their net worth. For identification, we exploit banks’ heterogeneous liability structure and the existence of regulated deposits in France whose rates are set by the government. Using administrative credit-registry and regulatory bank data, we find that a one-percentage-point increase in funding costs reduces credit by 17%. To insulate their profits, banks reach for yield and rebalance their lending towards smaller and riskier firms. These changes are not compensated for by less affected banks at the aggregate city level, with repercussions for firms’ investment. JEL classification: E23, E32, E44, G20, G21, L14
LATCH as a systematic tool for assessment of the breastfeeding technique in maternity

Methods: Cross-sectional analytical study with women in a single birth and their children in exclusive breastfeeding between June and December 2015. The individual and total scores of the LATCH tool were used to assess the breastfeeding technique, considering women’s difficulties to breastfeed and the child’s hours of life. Chi-square, Fisher’s exact, Kruskal-Wallis tests, and a generalized linear model were used to assess the relationships between LATCH scores and sociodemographic, clinical, and obstetric characteristics.
University of Groningen Differential effects of testosterone, dihydrotestosterone and estradiol on carotenoid deposition in an avian sexually selected signal Casagrande,

Recent studies have demonstrated that carotenoid-based traits are under the control of testosterone (T) by up-regulation of carotenoid carriers (lipoproteins) and/or tissue-speciWc uptake of carotenoids. T can be converted to dihydrotestosterone (DHT) and estradiol (E2), and variation in conversion rate may partly explain some contradictory Wndings in the literature. Moreover, most studies on the eVect of T on sexual signals have focused on the male sex only, while in many species females show the same signal, albeit to a lesser extent. We studied the eVects of T, DHT, and E2 treatment in male and female diamond doves Geopelia cuneata in which both sexes have an enlarged red eye ring, which is more pronounced in males. We Wrst showed that this periorbital ring contains very high concentration of carotenoids, of which most are lutein esters. Both T and DHT were eVective in enhancing hue, UV-chroma and size in both sexes, while E2 was ineVective. However, E2 dramatically increased the concentration of circulating lipoproteins. We conclude that in both sexes both color and size of the secondary sexual trait are androgen dependent. The action of androgens is independent of lipoproteins regulation. Potential mechanisms and their consequences for trade-oV are discussed.
palladseite, Pd17Se15: an experimental mineralogical study

The solubility of Ag, Cu, Hg, Pt, Sb and Te in the synthetic analogue of palladseite was experimentally studied at 350 °C. To document the impact of these elements on the palladseite crystal structure, Rietveld refinement analysis of experimental products was performed. The synthetic Pd17Se15 dissolves at 400 °C 3.6, 6.4, 8.8, 9.7, 6.1 wt. % of Cu, Ag, Hg, Pt and Te, respectively. The solubility of Sb in synthetic Pd17Se15 is less than 0.03 wt. %. Three different types of incorporation of the above-mentioned elements to the palladseite structure have been observed. Ag, Cu and Hg occupy a position 3d of the Pm–3m space group, which was empty in the unsubstituted Pd17Se15. Consequently, Pd occupancy of adjacent [Pd(4)Se6] octahedron is reduced to 0.46 and 0.51 for Cu and Ag-bearing palladseite, respectively. Incorporation of Hg to the palladseite structure causes vacancy of this Pd(4) position. Pt partially substitutes Pd at the Pd(2) position (6f ), forming Pd0.41/Pt0.59 mix site showing square-planar coordination by Se atoms. Te atoms substitute for Se. The refined unit-cell parameter increased from the initial value of a = 10.6074(1) Å for Pd17Se15 to 10.6680(1) Å for Te-bearing palladseite. Incorporation of Cu, Ag and Hg to the palladseite causes significant changes of its powder X-ray diffraction pattern and hence can be detected by PXRD.
Reconfigurable Low-Density Parity-Check (LDPC) Decoder for Multi-Standard 60 GHz Wireless Local Area Networks

In this study, a reconfigurable low-density parity-check (LDPC) decoder is designed with good hardware sharing for IEEE 802.15. 3c, 802.11ad, and 802.11ay standards. This architecture flexibly supports 12 types of parity-check matrix. The switching network adopts an architecture that can flexibly switch between different inputs and achieves a low hardware complexity. The check node unit adopts a switchable 8/16/32 reconfigurable structure to match different row weights at different code rates and uses the normalised probability min-sum algorithm to simplify the structure of searching for the minimum value. Finally, the chip is implemented using the TSMC 40 nm CMOS process, based on the IEEE 802.11ad standard decoder, extended to support the IEEE 802.15. 3c standard, and upwardly compatible with the next-generation advanced standard IEEE 802.11ay. The chip core size was 1.312 mm × 1.312 mm, the operating frequency was 117 MHz when the maximum number of iterations was five with the power consumption of 57.1 mW, and the throughput of 5.24 Gbps and 3.90 Gbsp was in the IEEE 802.11ad and 802.5. 3c standards, respectively.
Favipiravir Inhibits Hepatitis A Virus Infection in Human Hepatocytes

Hepatitis A virus (HAV) is a causative agent of acute hepatitis and can occasionally induce acute liver failure. However, specific potent anti-HAV drug is not available on the market currently. Thus, we investigated several novel therapeutic drugs through a drug repositioning approach, targeting ribonucleic acid (RNA)-dependent RNA polymerase and RNA-dependent deoxyribonucleic acid polymerase. In the present study, we examined the anti-HAV activity of 18 drugs by measuring the HAV subgenomic replicon and HAV HA11-1299 genotype IIIA replication in human hepatoma cell lines, using a reporter assay and real-time reverse transcription polymerase chain reaction, respectively. Mutagenesis of the HAV 5’ untranslated region was also examined by next-generation sequencing. These specific parameters were explored because lethal mutagenesis has emerged as a novel potential therapeutic approach to treat RNA virus infections. Favipiravir inhibited HAV replication in both Huh7 and PLC/PRF/5 cells, although ribavirin inhibited HAV replication in only Huh7 cells. Next-generation sequencing demonstrated that favipiravir could introduce nucleotide mutations into the HAV genome more than ribavirin. In conclusion, favipiravir could introduce nucleotide mutations into the HAV genome and work as an antiviral against HAV infection. Provided that further in vivo experiments confirm its efficacy, favipiravir would be useful for the treatment of severe HAV infection.
Entropy Generation Analysis of Peristaltic Flow of Nanomaterial in a Rotating Medium through Generalized Complaint Walls of Micro-Channel with Radiation and Heat Flux Effects

This study discusses entropy generation analysis for a peristaltic flow in a rotating medium with generalized complaint walls. The goal of the current analysis is to understand the fluid flow phenomena particular to micro devices. Nano materials with a size less than 100 nm have applications in micro heat exchangers to cool electronic circuits, blood analyzers, biological cell separations, etc. For this study, we considered the effects of radiation, viscous dissipation and heat flux on the flow of nanomaterial inside a cylindrical micro-channel. To investigate the slip effects on the flow, the second order slip condition for axial velocity, the first order slip condition for secondary velocity and the thermal slip conditions were used. The flow was governed by partial differential equations (PDE’s), which were turned into a system of coupled ordinary differential equations (ODE’s) that were highly non-linear and numerically solved using the NDSolve command in Mathematica. The impacts of different involved parameters on the flow field were investigated with the aid of graphical illustrations. Entropy generation and the Bejan number were given special attention, and it was found that they decreased as the Hartman number, rotation, and radiation parameters increased.
Gam-COVID-Vac (Sputnik V) and Pfizer-BioNTech Vaccines Adverse Events following Immunization in Patients Affected by Parkinson’s Disease and Multiple Sclerosis: A Longitudinal Study

The Republic of San Marino COVID-19 vaccination campaign used Gam-COVID-Vac and Pfizer-BioNTech vaccines. To assess adverse events following immunization (AEFIs), approximately 6000 vaccine recipients were monitored by the ROCCA study, including subgroups with Parkinson’s Disease (PD) and Multiple Sclerosis (MS). The purpose of this study is to evaluate short-term AEFIs through a 1-month follow-up. We conducted a longitudinal study, using active surveillance to evaluate the safety profiles of COVID-19 vaccines in PD and MS patients. Participants were actively administered a standardized online questionnaire to collect information on AEFIs. Among all PD and MS assisted by the San Marino hospital, a total of 82 patients completed the questionnaires. One week after administration of the first dose, vaccine recipients reported AEFIs in 26% of cases in the PD group, 67% in the MS group, and 68% in the control group. Participants reported slightly higher rates of AEFIs after dose 2 compared with dose 1, being 29%, 75%, and 78% for PD, MS, control group, respectively. Most of the reported symptoms were mild. Patients with PD and MS reported few AEFIs after administration of the COVID-19 vaccines. The frequency of AEFIs in the PD population was significantly lower than in the control group.
Complex Networks and the b-Value Relationship Using the Degree Probability Distribution: The Case of Three Mega-Earthquakes in Chile in the Last Decade

Studies from complex networks have increased in recent years, and different applications have been utilized in geophysics. Seismicity represents a complex and dynamic system that has open questions related to earthquake occurrence. In this work, we carry out an analysis to understand the physical interpretation of two metrics of complex systems: the slope of the probability distribution of connectivity (γ) and the betweenness centrality (BC). To conduct this study, we use seismic datasets recorded from three large earthquakes that occurred in Chile: the Mw8.2 Iquique earthquake (2014), the Mw8.4 Illapel earthquake (2015) and the Mw8.8 Cauquenes earthquake (2010). We find a linear relationship between the b-value and the γ value, with an interesting finding about the ratio between the b-value and γ that gives a value of ∼0.4. We also explore a possible physical meaning of the BC. As a first result, we find that the behaviour of this metric is not the same for the three large earthquakes, and it seems that this metric is not related to the b-value and coupling of the zone. We present the first results about the physical meaning of metrics from complex networks in seismicity. These first results are promising, and we hope to be able to carry out further analyses to understand the physics that these complex network parameters represent in a seismic system.
Pollen Morphology of Napeantheae Wiehler (Gesneriaceae) from Brazil

ABSTRACT Napeantheae is a monogeneric tribe of Gesneriaceae (with Napeanthus Gardner), that presents species with different morphology from other Gesnerioideae, being herbs with rosulate leaves that grow in pits, banks or at the base of rocks in humid forests. The tribe's palynology is poorly known. Thus, the aim of this study was to investigate the pollen morphology of the Brazilian native species of Napeanthus (Napeantheae) in order to expand the morphological knowledge of the tribe and compare it with existing studies on Gesneriaceae. For the analysis, the pollen grains were removed from flower buds of exsiccatae deposited in herbaria; they were acetolyzed, measured, photographed using light microscopy (LM) and scanning electron microscopy (SEM), and described qualitatively. The analyzed species present differences in amb, polar area, shape, size of ectoapertures, type of endoapertures and exine thickness. The pollen grains are monads, isopolar, small, tricolporate, circulaperturate, ectoaperture rounded at the polar ends and without margo; the exine is semitectate, microreticulate-fossulate, sexine is thicker than nexine. An artificial pollen key is presented to help distinguish species. Quantitative pollen grain data confirm the qualitative differences observed, especially in relation to the type of endoaperture. The microreticulate-fossulate exine ornamentation observed in Napeanthus has not previously been recorded for Gesneriaceae, especially in Gesnerioideae.