cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Prediction of biomechanical responses of human lumbar discs - a stochastic finite element model analysis
Creators: name: Wang, Wei
name: Zhou, Chaochao
name: Guo, Runsheng
name: Cha, Thomas
name: Li, Guoan
Publisher: name: Taylor & Francis
Year: 2021
Subjects: Biophysics
Physical Sciences not elsewhere classified
Biotechnology
Environmental Sciences not elsewhere classified
Biological Sciences not elsewhere classified

description: Accurate biomechanical investigation of human intervertebral discs (IVDs) is difficult because of their complicated structural and material features. To investigate probabilistic distributions of the biomechanical responses of the IVD by considering varying nonlinear structural and material properties using a stochastic finite element (FE) model. A FE model of a L3-4 disc was reconstructed, including the nucleus pulposus (NP), annular matrix and fibers. A Monte Carlo method was used to randomly generate 500 sets of the nonlinear material properties and fiber orientations of the disc that were implemented into the FE model. The FE model was analyzed under seven loading conditions: a 500 N compressive force, a 7.5Nm moment simulating flexion, extension, left-right lateral bending, and left-right axial rotation, respectively. The distributions of the ranges of motion (ROMs), intradiscal pressures (IDP), fiber stresses and matrix strains of the disc were analyzed. Under the compressive load, the displacement varied between 0.29 mm and 0.76 mm. Under the 7.5Nm moment, the ROMs varied between 3.0° and 6.0° in primary rotations. The IDPs varied within 0.3 MPa under all the loading conditions. The maximal fiber stress (3.22 ± 0.64 MPa) and matrix strain (0.27 ± 0.12%) were observed under the flexion and extension moments, respectively. The IVD biomechanics could be dramatically affected by the structural and material parameters used to construct the FE model. The stochastic FE model that includes the probabilistic distributions of the structural and material parameters provides a useful approach to analyze the statistical ranges of the biomechanical responses of the IVDs.
Influence of knowledge about discriminatory practices towards HIV-positive individuals with the uptake of HIV testing during pregnancy among reproductive-aged women in Nigeria
Creators: name: Nzelu, Charles
name: Aagard, Magdeline
name: Danawi, Hadi
name: Francavillo, Gwendolyn
name: Melea, Pelagia
Publisher: name: Nigerian Medical Journal
Year: 2024

description: Background: The fear of positive HIV results has been reported as a determinant of HIV testing among pregnant women and women of reproductive age. When pregnant women know about discriminatory practices toward other people based on their HIV-positive status, it may impact their testing for HIV. Therefore, the purpose of this study was to examine the association between Nigerian pregnant women's knowledge of discriminatory practices against persons living with HIV and their self-reported HIV testing during antenatal visits or childbirth.

Methodology: A secondary analysis of data from 659 t women who had experienced pregnancy aged 15–49 years from the 2013 Nigeria Demographic Health Survey (NDHS) was done. Multivariable logistic regression analysis was done to determine the association between knowledge about discriminatory practices towards HIV-positive individuals (independent variable) and HIV testing during pregnancy (dependent variable) after controlling for covariates (demographic characteristics). A P-value of ≤ 0.05 was taken as statistically significant.

Results: Bivariate logistic regression analysis findings showed that educational level, place of residence, and religion statistically significantly predicted HIV testing of pregnant women, while age categories and marital status did not. The women’s knowledge of discriminatory practices towards persons living with HIV/AIDS was not statistically significant at Alpha = 0.05 (AOR,1.51; 95% CI: .46, 4.95) Higher levels of education (Primary Education, AOR = 1.81; 95% CI: 1.03, 3.18; Secondary Education, AOR = 3.73; 95% CI: 1.92, 7.25; Higher Education, AOR = 10.92; 95% CI: 4.25, 28.05) and those living in urban areas (AOR = 1.62; 95% CI: 1.04, 2.51) were significantly associated with testing for HIV in the stepwise multivariable regression model of pregnant women’s knowledge of discriminatory practices towards persons living with HIV/AIDS.

Conclusion: Although knowledge of discriminatory practices did not predict pregnant women's HIV testing in this study, interventions by stakeholders to eliminate or reduce these practices should be stepped up towards facilitating positive social change.
description: Nigerian Medical Journal, Vol. 65 No. 3 (2024): May to June
Exploring IoT and Machine Learning Integration for Soil Nutrients Monitoring and Crop Recommendation: A Survey
Creators: name: CSEIJ
Publisher: name: Zenodo
Year: 2025

description: The integration of Internet of Things (IoT) and machine learning (ML) technology has thecapacity to transform agriculture via the improvement of precision agricultural methods.This survey paper explores the integration of IoT and ML in the field of soil nutrientmonitoring and crop recommendation systems. In the context of crop recommendationsystems and soil nutrient monitoring, this paper explores the integration of IoT and ML. Itsgoal is to provide a thorough overview of the most recent developments, applications,challenges, and potential future directions. IoT sensors collect and give immediate soilhealth information, while ML algorithms analyses this data to suggest nutrient deficits andrecommend the most suitable crops. The paper reviews the progress made in sensortechnology and machine learning applications, highlighting the advantages they provide toprecision farming. This integration promises to enhance agricultural productivity andsustainability through datadriven decision-making and resource optimization. At the endresearch gaps are discussed, along with future research directions.
ZNF503 combined with GATA3 is a prognostic factor in triple-negative breast cancer
Creators: name: Liu, Siyu
name: Cao, Xiaobin
name: Li, Jing
name: Liu, Jingjing
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Space Science
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Hematology
subject: Plant Biology

description: Triple-negative breast cancer (TNBC) is a subtype of breast cancer with poor prognosis. Therefore, there is an urgent need to identify prognostic markers to improve current treatment and therapeutic strategies. The transcriptional factor ZNF503 has been reported to promote aggressive breast cancer development through the down-regulation of GATA3 expression and has been identified as a candidate predictive marker. In this study, we explored whether ZNF503 and GATA3 could serve as prognostic markers independently or in combination. We performed a survival analysis of 989 breast cancer patients from The Cancer Genome Atlas (TCGA), and validated the findings in 202 breast cancer patients from tissue microarray (TMA). In TCGA database, the mRNA expression of GATA3 and ZNF503 could not predict TNBC prognosis alone, though the ratio index, ZNF503/GATA3 could be a novel prognostic biomarker in TNBC patients. In TMA database, we detected the protein expression of ZNF503 and GATA3 and found that the combination of the two genes, ZNF503-GATA3, significantly improved the predictive ability of clinical outcomes. The results indicated that the binding index of ZNF503 and GATA3 could be used as a prognostic biomarker in TNBC.
A hierarchical clustering method for quantifying satellite abundance
Creators: name: Xi, Chengyu
name: Taylor, James E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a new method for quantifying the abundance of satellites around field galaxies and in groups. The method is designed to work with samples, such as local photometric redshift catalogues, that do not have full spectroscopic coverage, but for which some redshift or distance information is available. It consists of identifying the galaxies most likely to be centrals, and using the clustering signal around them as a template to iteratively decompose the full population into satellite and central populations. In that sense it is similar to performing crowded-field photometry, after having first used isolated stars to determine the point spread function of the image. The method does not identify individual satellites or centrals conclusively, but assigns a probability to each galaxy of being one or the other. Averaged over a large sample, it provides a statistical estimate of satellite abundance, even in crowded fields with large redshift uncertainties. We test the method using data from the COSMOS field, which includes a large set of local objects with accurate photometric redshifts. We measure satellite abundance as a function of central stellar or halo mass, as well as the satellite luminosity function, and find results consistent with previous studies, but extending over a broader range of central masses. We also consider a number of possible systematic uncertainties in the method, and show that they are generally smaller than our random errors. Having presented the method in this paper, we will use it to study the properties of the satellite populations in a forthcoming one.
description: 17 pages, 17 figures
Le carte di S. Giorgio in Braida di Verona (1075 – 1150). Archivio Segreto Vaticano, Fondo Veneto I, a cura di Giannina Tomassoli Manenti
Creators: name: De Angelis, Gianmarco
Publisher: name: Scrineum Rivista
Year: 2013

description: Scrineum Rivista, 5 (2008)
Correlation between oligohydramnios and anaemia in the third trimester of pregnancy: A study in a tertiary care hospital in Pakistan.
Creators: name: Batool, Asma
name: Sultana, Dr Mussarat
name: Sher, Zaiba
name: Fayyaz, Saadia
name: Sharif, Ayesha
name: Faisal, Nida
Publisher: name: Nigerian Medical Journal
Year: 2024

description: Background: Maintaining normal amniotic fluid index and normal hemoglobin level is crucial for normal fetal development. Their reduction can lead to maternal and fetal morbidity in the form of operative delivery and poor perinatal outcome such as, low birth weight. There is an association between oligohydramnios and anaemia, although there is scarcity on this correlation in literature. Early detection of oligohydramnios can improve maternal and perinatal outcome. This study aimed to investigate the association between oligohydramnios and anaemia during the third trimester of pregnancy.

Methodology: This retrospective cohort study was conducted at NESCOM Hospital, Pakistan. The study spanned from August 1, 2021, to July 31, 2022.

Results: The study included 109 pregnant individuals with oligohydramnios, resulting in an incidence of 22% among the total of 551 deliveries during the study period. The average age of participants was 29.75 years. The average gestational age was 33.52 weeks, with a range of 28 to 38 weeks. The analysis indicated that 44.03% of cases with oligohydramnios were associated with anaemia, followed by idiopathic causes (41.28%). Pearson's correlation revealed a significant association between oligohydramnios and anaemia (r = 0.307, p = 0.001), supporting the hypothesis of a potential interconnection between these two conditions. Regarding delivery outcomes, 81.6% underwent cesarean section, emphasizing the need for careful management in cases of oligohydramnios and anaemia. Neonatal outcomes indicated that 1.8% and 44.5% of neonates were extremely low birth weight and low birth weight, respectively.

Conclusion: This study provides empirical evidence supporting a significant association between oligohydramnios and anaemia in the third trimester.
description: Nigerian Medical Journal, Vol. 65 No. 3 (2024): May to June
Giuseppe Cafiero sulle orme di Joyce a Roma
Creators: name: De Petris, Carla
Publisher: name: Biblioteca di Studi di Filologia Moderna: Series, Journals and Workshop
Year: 2011

description: In 2006 Giuseppe Cafiero published James Joyce, Roma & altre storie, a novel with thriller-like undertones that weaves stories around the author of Ulysses. In her conversation with the author, Carla de Petris investigates the genesis of the novel and reflects on the post-modernist stances of its complex plot.

description: Studi irlandesi. A Journal of Irish Studies, No 1 (2011)
Experimental investigation of the instability of a trailing vortex pair
Creators: name: Eliason, Brent G
Publisher: name: University of British Columbia
Year: 2010

description: The mutual instability of a trailing vortex pair has been studied in the Department's large wind tunnel. The vortices were visualized using helium filled soap bubbles and the cores probed with a hot wire anemometer. Measurements were made to permit calculation of the wing lift, the circulation of the trailing vortices, the vortex separation, the diameter of the vortex cores and the wavelength and plane of oscillation of the disturbed vortices. The results show that the linear theories of Crow and Parks closely predict the initial growth of the instability.
A Grid-Structured Model of Tubular Reactors
Creators: name: Haitsiukevich, Katsiaryna
name: Bergman, Samuli
name: Filho, Cesar de Araujo
name: Corona, Francesco
name: Ilin, Alexander
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We propose a grid-like computational model of tubular reactors. The architecture is inspired by the computations performed by solvers of partial differential equations which describe the dynamics of the chemical process inside a tubular reactor. The proposed model may be entirely based on the known form of the partial differential equations or it may contain generic machine learning components such as multi-layer perceptrons. We show that the proposed model can be trained using limited amounts of data to describe the state of a fixed-bed catalytic reactor. The trained model can reconstruct unmeasured states such as the catalyst activity using the measurements of inlet concentrations and temperatures along the reactor.
description: 2021 IEEE 19th International Conference on Industrial Informatics (INDIN)
Hubble expansion & Structure Formation in Time Varying Vacuum Models
Creators: name: Basilakos, S.
name: Plionis, M.
name: Sola, J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the properties of the FLRW flat cosmological models in which the vacuum energy density evolves with time, $Λ(t)$. Using different versions of the $Λ(t)$ model, namely quantum field vacuum, power series vacuum and power law vacuum, we find that the main cosmological functions such as the scale factor of the universe, the Hubble expansion rate $H$ and the energy densities are defined analytically. Performing a joint likelihood analysis of the recent supernovae type Ia data, the Cosmic Microwave Background (CMB) shift parameter and the Baryonic Acoustic Oscillations (BAOs) traced by the Sloan Digital Sky Survey (SDSS) galaxies, we put tight constraints on the main cosmological parameters of the $Λ(t)$ scenarios. Furthermore, we study the linear matter fluctuation field and the growth rate of clustering of the above vacuum models. Finally, we derived the theoretically predicted dark-matter halo mass function and the corresponding distribution of cluster-size halos for all the models studied. Their expected redshift distribution indicates that it will be difficult to distinguish the closely resembling models (constant vacuum, quantum field and power-law vacuum), using realistic future X-ray surveys of cluster abundances. However, cluster surveys based on the Sunayev-Zeldovich detection method give some hope to distinguish the closely resembling models at high redshifts.
description: 19 pages, 6 figures, Accepted in Phys. Rev. D (to appear)
Pritchard’s Regimen: The Effect of 12-Hour Versus 24-Hour Magnesium Sulphate Maintenance Regimen on the Occurrence of Seizures and Maternal Outcome in Women with Severe Features of Preeclampsia: A Triple-Blind Randomized Controlled Trial
Creators: name: Ilikannu, Samuel
name: Ebeigbe, Peter Ndidi
name: Ochei, Angela Uduak
Publisher: name: Nigerian Medical Journal
Year: 2024

description: Background: Magnesium sulphate (MgSO4) administered for twenty-four hours is the drug of choice for seizure prophylaxis in patients with preeclampsia with severe features. Due to its narrow therapeutic index, a reduction in the duration of MgSO4 administered in the postpartum period may not only prevent the occurrence of seizures but also reduce the adverse effects associated with this drug.This study aim was to compare the efficacy of the 12-hour and 24-hour Pritchard’s MgSO4 maintenance regimen on the occurrence of seizures and maternal outcomes in patients with preeclampsia with severe features.

Methodology: A triple-blind randomized controlled trial was conducted among women with preeclampsia with severe features between 1st June 2022 and January 31st, 2023. The primary outcome measure was the occurrence of seizure in either arm of the study. One hundred and forty-six women were randomized into two groups, those who received a 12-hour MgSO4 regimen and placebo for the remaining twelve hours (Group I) and those who received a 24-hour MgSO4 regimen in the postpartum period (Group II). The collected data was coded and analyzed using Statistical Product and Service Solutions (SPSS) version 26 and p<0.05 was considered significant.

Results: There was no statistically significant difference between the two groups concerning the occurrence of seizures, the need to recommence MgSO4, clinical evidence of toxicity and adverse effects of MgSO4. There was also no statistically significant difference between the two groups in the total dose of MgSO4 administered, duration of urethral catheterization and duration of hospital admission. No maternal mortality was recorded in this study.

Conclusion: The results of this study suggest that the 12-hour MgSO4 maintenance regimen is as efficacious as the traditional 24-hour regimen in preventing seizures without worsening maternal outcomes.
description: Nigerian Medical Journal, Vol. 65 No. 3 (2024): May to June
RELIGIONIMLAR TIZIMIDA MA'NO KENGAYISHI VA TORAYISHI
Creators: name: To'ychiyeva, Zulayho
Publisher: name: Zenodo
Year: 2025

description: Ushbu maqolada religionimlar semantikasida o‘zgarishlar umumiylikdan xususiylikka tomon yuz berganda – ma’no torayishi, xususiylikdan umumiylikka tomon yuz berganda esa ma’no kengayishi haqida fikr yuritilgan.
Magnetic-susceptibility and specific-heat studies on the inhomogeneity of superconductivity in the underdoped La_2-x_Sr_x_CuO_4_
Creators: name: Adachi, T.
name: Omori, K.
name: Tanabe, Y.
name: Koike, Y.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The possible inhomogeneity of superconductivity has been investigated by means of bulk-sensitive probes, using La_2-x_Sr_x_CuO_4_ (LSCO) single crystals from the underdoped to optimally doped regime. Measurements of the magnetic susceptibility, chi, on field cooling and specific heat have revealed that both the absolute value of chi at 2 K, regarded as corresponding to the superconducting (SC) volume fraction in a sample, and the Sommerfeld constant, reflecting the density of states of quasiparticles at the Fermi level, exhibit significant dependence on x, namely, on the hole concentration. This is the first experimental work strongly suggesting that a phase separation into SC and normal-state regions takes place in the underodped regime of LSCO as well as in the overdoped regime.
description: 7 pages, 4 figures, the version 2 has been accepted for publication in J. Phys. Soc. Jpn
The Cauchy problem and wave-breaking phenomenon for a generalized sine-type FORQ/mCH equation
Creators: name: Qin, Guoquan
name: Yan, Zhenya
name: Guo, Boling
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: In this paper, we are concerned with the Cauchy problem and wave-breaking phenomenon for a sine-type modified Camassa-Holm (alias sine-FORQ/mCH) equation. Employing the transport equations theory and the Littlewood-Paley theory, we first establish the local well-posedness for the strong solutions of the sine-FORQ/mCH equation in Besov spaces. In light of the Moser-type estimates, we are able to derive the blow-up criterion and the precise blow-up quantity of this equation in Sobolev spaces. We then give a sufficient condition with respect to the initial data to ensure the occurance of the wave-breaking phenomenon by trace the precise blow-up quantity along the characteristics associated with this equation.
description: 17 pages, 0 figures. arXiv admin note: substantial text overlap with arXiv:2112.10361
Kaiso Expression in Triple Negative Breast Cancer in a Tertiary Hospital in Ghana
Creators: name: Duduyemi, Babatunde
name: Kwakye, Thelma
name: Sallah, Lorraine
Publisher: name: Nigerian Medical Journal
Year: 2024

description: Background: Breast cancer has produced more lost disability-adjusted life years (DALYs) than any other type of cancer. The prevalence of the disease, especially triple negative breast cancer (TNBC) in Africa is on the rise, with poor survival rates. With the great advancements in treatments of breast cancers, that of TNBC is still a challenge due to its narrowed treatment options and poor disease prognosis. This research seeks to explore the expression of kaiso in Ghanaian breast cancer and how they may modulate clinicopathological features, and disease prognosis.

Methodology: A cross sectional and retrospective study was conducted on formalin-fixed paraffin-embedded (FFPE) breast cancer tissues retrieved from the archives of the pathology unit of Komfo Anokye Teaching Hospital (KATH). Immunohistochemistry assessment was performed on haematoxylin and eosin-stained slides selected for tissue microarray construction. Data were analysed using SPSS version 28 and Microsoft excel 2013.

Result: 55.3% of the cases tested negative to progesterone receptor (PR), oestrogen receptor (ER), and human epidermal growth receptor 2 (HER2). There were significant associations between menopausal status and molecular subtype (p=0.010), Kaiso expression and histological diagnoses (<0.001) and Kaiso against lymphovascular invasion (0.050). However, there were no significant associations between Kaiso localization and the clinicopathological features although 63.9% of the expression was seen in the nucleus.

Conclusion: The study indicates that Kaiso is highly expressed in Ghanaian TNBC and likely associated with worse outcomes in aggressive tumour types.
description: Nigerian Medical Journal, Vol. 65 No. 3 (2024): May to June
Basic embeddings and Hilbert's 13th problem on superpositions (in Russian)
Creators: name: Skopenkov, A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Functional Analysis (math.FA)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 26B40, 51F99

description: This note is purely expository. We show how in the course of the Kolmogorov-Arnold solution of Hilbert's 13-th problem on superpositions there appeared the notion of a basic embedding. A subset K of R^2 is {\it basic} if for each continuous function f:K->R there exist continuous functions g,h:R->R such that f(x,y) = g(x) + h(y) for each point (x,y) in K. We present descriptions of basic subsets of the plane and graphs basically embeddable into the plane (solutions of Arnold's and Sternfeld's problems). We present some results and open problems on the smooth version of the property of being basic. This note is accessible to undergraduates and could be an interesting easy reading for mature mathematicians.
description: 22 pages, 7 figures
Quality Management in Clinical and Public Health Research: A Panacea for Minimising and Eliminating Protocol Deviations in Research Operations
Creators: name: Isere, Elvis Efe
name: Omorogbe, Nosa Eniye
Publisher: name: Nigerian Medical Journal
Year: 2024

description: A quality management system for clinical and public health research operations is indispensable because it ensures the integrity and reliability of research outcomes. By implementing a robust quality management practice in research implementation and operation, research teams can uphold the highest standard of research conduct, thereby enhancing the credibility and trustworthiness of research findings. This paper elucidates the significance and role of a quality management system in clinical and public health research operations and its efficacy in minimising and eliminating protocol deviations and highlights the key steps in setting up a quality management system for research operations.
description: Nigerian Medical Journal, Vol. 65 No. 3 (2024): May to June
Prevalence and Pattern of Gestational Thyroid Dysfunction in a Population of South-East Nigerian Women.
Creators: name: Okoli, Ugochukwu J
name: Basil, Bruno
name: Nwajiobi, Chiebonam E
Publisher: name: Nigerian Medical Journal
Year: 2024

description: Background: Pregnancy serves as a physiological stress test for the thyroid which often leads to dysfunction in women with limited thyroid reserves. The occurrence of gestational thyroid dysfunction is linked to unfavourable obstetric and foetal outcomes. Globally, iodine deficiency is a prominent causative factor for thyroid dysfunction. The study aimed to determine the prevalence and pattern of thyroid dysfunction among pregnant women in Enugu, South-east Nigeria.

Methodology: This hospital-based descriptive cross-sectional and observational study was conducted over six months on selected participants from pregnant women attending antenatal clinics at the study sites. Maternal clinical and demographic risk factors for thyroid dysfunction were evaluated in a cohort of 318 pregnant women. An analysis of variance (ANOVA) was performed to compare participants' thyroid status across different trimesters of pregnancy, and different thyroid and nutritional iodine states.

Result: The prevalence of thyroid dysfunction in the study population is 6.6%. Hypothyroidism was detected in 5.3% of the participants, consisting of 3.8% sub-clinical hypothyroidism and 1.6% overt hypothyroidism. Sub-clinical hyperthyroidism accounted for 1.3% of all participants; no overt hyperthyroidism was detected in this study.

Conclusion: There is a relatively high prevalence of gestational thyroid dysfunction in the study population with hypothyroidism being the predominant disorder. This highlights the need for region-specific considerations in antenatal care to facilitate early detection and effective management of gestational thyroid dysfunction, thereby mitigating potential adverse maternal and foetal outcomes.
description: Nigerian Medical Journal, Vol. 65 No. 3 (2024): May to June
Investigation of intra-seasonal to multi-decadal variability in South Florida rainfall
Creators: name: Mestas-Nũnez, Alberto M.
name: Enfield, David B.
Publisher: name: National Oceanic and Atmospheric Administration, Oceanic and Atmospheric Research Laboratories, Atlantic Oceanographic and Meteorological Laboratory
Year: 2003
Subjects: subject: Rain and rainfall--Florida.
subject: Rainfall anomalies--Florida.
subject: Precipitation (Meteorology)--Florida.

description: We investigated different climatic factors affecting South Florida (climate divisions 4, 5 and 6) precipitation. The climatic indexes used here are based on over a century of global sea surface temperature anomalies. The climatic associations are studied for different seasons and in three frequency bands (intra-seasonal, inter-annual and decadal). We found that the known ENSO relationship for winter/spring (wetter than normal South Florida rainfall anomalies during El Niño) does not hold during the summer. We attribute this to an opposite relationship on intra-seasonal South Florida precipitation (dry during El Niño) that exists during that season. The ENSO associations with South Florida unfiltered precipitation depend on the different phases of the North Atlantic and Eastern North Pacific decadal variability. In general, decadal warming of the Eastern North Pacific and North Atlantic are associated with wetter decades of south Florida precipitation. Seasonal outlooks of south Florida precipitation ought to consider SST variability associated with ENSO, and from decadal modes of variability in the Pacific and the Atlantic.
Serum Brain Natriuretic Peptide Levels Correlate with the Severity of Hypertension in a Population of Nigerian Patients.
Creators: name: Nwajiobi, Chiebonam E
name: Basil, Bruno
name: Okoli, Ugochukwu J
Publisher: name: Nigerian Medical Journal
Year: 2024

description: Background: Hypertension is a major global health concern requiring precise risk assessment. Brain Natriuretic Peptide (BNP) has emerged as a potential biomarker, but its relationship with hypertension severity requires exploration to evaluate its potential as a risk prediction tool. This study aimed to assess the relationship between serum BNP levels and the severity of hypertension in a population of Nigerian patients.

Methodology: This was an analytical cross-sectional case-controlled study involving 103 hypertensive patients and 98 controls. Participants were grouped based on World Health Organization (WHO) criteria for diagnosis of Hypertension and the severity of hypertension was categorized based on blood pressure readings. The mean BNP levels were assessed among different hypertension grades, while logistic regression was used to assess the odds of higher severity with elevated BNP.

Results: Serum BNP levels were significantly higher in hypertensive individuals (616.5 ± 66.3 pg/mL) compared to controls (501.1 ± 84.6 pg/mL) and varied significantly across different hypertension grades (p = 0.000). A positive correlation was observed between serum BNP and hypertension severity (r = 0.736, p < 0.001). Logistic regression analysis indicated increasing odds of higher severity with elevated BNP from Grade 1 to Grade 3 hypertension.

Conclusion: This study established a positive correlation between serum BNP levels and hypertension severity, indicating its potential as a predictive biomarker for risk stratification in hypertensive individuals.
description: Nigerian Medical Journal, Vol. 65 No. 3 (2024): May to June
Le costituzioni di Gerardo da Sesso: gli statuti sinodali novaresi e i decreti emanati in qualità di legato apostolico
Creators: name: Olivieri, Antonio
Publisher: name: Scrineum Rivista
Year: 2013
Subjects: synodal statutes; Novara; Gerardo da Sesso

description: Gerard from Sesso was an important Lombard prelate close to pope Innocent III: at the end of his life (+ 1211 december) besides a Papal legate, he was elected bishop of Novara, designated cardinal bishop of Albano and, according to a poorly documented tradition, he was appointed archbishop of Milan for few months. Some scholars of 17-18th century ascribe to him a series of synodal decrees for Novara's diocese and a body of disciplinary regulations that was spread among the clergy of Milan. The paper here proposed re-examines the documentation relating to these two collection of rules through a study of their structure and of their mutual relations based on Medieval specimens which are still unpublished or not well known to the scholars. We'll also try to emphasize their complex stratification and correct some mistaken identities (for instance the attribution to Gerard of a group of legateship precepts which were on the contrary issued by cardinal Geoffrey from Castiglione in 1229).
description: Scrineum Rivista, 1 (2003)
Detection of Dyslexia and Dyscalculia in Children
Creators: name: CSEIJ
Publisher: name: Zenodo
Year: 2025

description: Learning disabilities represent a prevalent category of developmental challenges seen inchildren. The process of learning is pivotal for a child's holistic growth. Children encounterhurdles in their daily tasks such as reading, verbal expression, organizational skills, andsimilar activities. These specific learning impediments are categorized into dyslexia,dysgraphia, and dyscalculia. Dyslexia refers to difficulties in reading and distinguishingspeech sounds. Dysgraphia and dyscalculia pertain to challenges in written expression andmathematical computations, respectively. Timely identification and assessment are crucialfor early intervention and treatment. The forthcoming article outlines methodologies andapproaches employed in identifying dyslexia. Its key contribution lies in a comparativeexamination of diverse machine learning algorithms utilized for dyslexia diagnosis,encompassing SVM, KNN, and random forest.
Efficiently Imaging Accreting Protoplanets from Space: Reference Star Differential Imaging of the PDS 70 Planetary System using the HST/WFC3 Archival PSF Library
Creators: name: Sanghi, Aniket
name: Zhou, Yifan
name: Bowler, Brendan P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Accreting protoplanets provide key insights into how planets assemble from their natal protoplanetary disks. Recently, Zhou et al. (2021) used angular differential imaging (ADI) with Hubble Space Telescope's Wide Field Camera 3 (HST/WFC3) to recover the young accreting planet PDS 70 b in F656N ($\mathrm{H}α$) at a S/N of 7.9. In this paper, we demonstrate a promising approach to efficiently imaging accreting planets by applying reference star differential imaging (RDI) to the same dataset. We compile a reference library from the database of WFC3 point-spread functions (PSFs) provided by Space Telescope Science Institute and develop a set of morphology-significance criteria for pre-selection of reference frames to improve RDI subtraction. RDI with this PSF library results in a detection of PDS 70 b at a S/N of 5.3. Astrometry and photometry of PDS 70 b are calibrated using a forward-modeling method and injection-recovery tests, resulting in a separation of $186 \pm 13$ mas, a position angle of $142 \pm 5^\circ$, and an H$α$ flux of $(1.7 \pm 0.3)\times10^{-15}$ erg s$^{-1}$ cm$^{-2}$. The lower detection significance with RDI can be attributed to the $\sim$100 times lower peak-to-background ratios of the reference PSFs compared to the ADI PSFs. Building a high-quality reference library with WFC3 will provide unique opportunities to study accretion variability on short timescales not limited by roll angle scheduling constraints and efficiently search for actively accreting protoplanets in $\mathrm{H}α$ around targets inaccessible to ground-based adaptive optics systems, such as faint transition disk hosts.
description: Accepted for publication in The Astronomical Journal, 20 pages, 12 figures, 1 table
I mutevoli volti dell’eroe
Creators: name: Serpillo, Giuseppe
Publisher: name: Biblioteca di Studi di Filologia Moderna: Series, Journals and Workshop
Year: 2013

description: Yeats needed heroes and looked forward to finding one who might embody his ideas and hopes of the beginning of a new era. However, his standard of perfection changed over the years: from a character in whom the best and highest qualities of an individual might come into being, to a model of the hero able to stand as a symbol and guide for his fellow men, in particular those people Yeats felt mainly responsible for, the Irish. There is something Carlylean in this (Yeats knew and appreciated Carlyle, even though he did not like his style), but his view of the hero includes other models, like the tragic hero and the hero of myth. This paper takes into consideration two heroes who frequently recur in his work, Oisin and Cuchulainn, pointing to similarities and difference both in their qualities and functions. However, above and beyond them, it is the poet himself that emerges as a key figure of a hero in Yeats’s poetry, as the only one who can fulfil the double task of developing his self and playing an essential social and moral role.
description: Studi irlandesi. A Journal of Irish Studies, No 2 (2012)
A simple derivation of the electromagnetic field of an arbitrarily moving charge
Creators: name: Padmanabhan, Hamsa
Publisher: name: arXiv
Year: 2008
Subjects: subject: Classical Physics (physics.class-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The expression for the electromagnetic field of a charge moving along an arbitrary trajectory is obtained in a direct, elegant, and Lorentz invariant manner without resorting to more complicated procedures such as differentiation of the Lienard-Wiechert potentials. The derivation uses arguments based on Lorentz invariance and a physically transparent expression originally due to J.J.Thomson for the field of a charge that experiences an impulsive acceleration.
description: The following article has been accepted by the American Journal of Physics. After it is published, it will be found at http://scitation.aip.org/ajp; 12 pages, 1 figure
Wannier Function Perturbation Theory: Localized Representation and Interpolation of Wavefunction Perturbation
Creators: name: Lihm, Jae-Mo
name: Park, Cheol-Hwan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Thanks to the nearsightedness principle, the low-energy electronic structure of solids can be represented by localized states such as the Wannier functions. Wannier functions are actively being applied to a wide range of phenomena in condensed matter systems. However, the Wannier-functionbased representation is limited to a small number of bands and thus cannot describe the change of wavefunctions due to various kinds of perturbations, which require sums over an infinite number of bands. Here, we introduce the concept of the Wannier function perturbation, which provides a localized representation of wavefunction perturbations. Wannier function perturbation theory allows efficient calculation of numerous quantities involving wavefunction perturbation, among which we provide three applications. First, we calculate the temperature-dependent indirect optical absorption spectra of silicon near the absorption edge nonadiabatically, i.e., differentiating phonon-absorption and phonon-emission processes, and without arbitrary temperature-dependent shifts in energy. Second, we establish a theory to calculate the shift spin conductivity without any band-truncation error. Unlike the shift charge conductivity, an exact calculation of the shift spin conductivity is not possible within the conventional Wannier function methods because it cannot be obtained from geometric quantities for low-energy bands. We apply the theory to monolayer WTe$_2$. Third, we calculate the spin Hall conductivity of the same material again without any band-truncation error. Wannier function perturbation theory is a versatile method that can be readily applied to calculate a wide range of quantities related to various kinds of perturbations.
description: 31+6 pages, 14+7 figures
On the Kohn--Sham density response in a localized basis set
Creators: name: Foerster, Dietrich
name: Koval, Peter
Publisher: name: arXiv
Year: 2009
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We construct the Kohn--Sham density response function $χ_{0}$ in a previously described basis of the space of orbital products. The calculational complexity of our construction is $O(N^{2}N_ω)$ for a molecule of $N$ atoms and in a spectroscopic window of $N_ω$ frequency points. As a first application, we use $χ_{0}$ to calculate molecular spectra from the Petersilka--Gossmann--Gross equation. With $χ_{0}$ as input, we obtain correct spectra with an extra computational effort that grows also as $O(N^2 N_ω)$ and, therefore, less steeply in $N$ than the $O(N^{3})$ complexity of solving Casida's equations. Our construction should be useful for the study of excitons in molecular physics and in related areas where $χ_{0}$ is a crucial ingredient.
description: 20 pages, 11 figures
Deep XMM-Newton Observations of an X-ray Weak, Broad Absorption Line Quasar at $z=6.5$
Creators: name: Yang, Jinyi
name: Fan, Xiaohui
name: Wang, Feige
name: Lanzuisi, Giorgio
name: Nanni, Riccardo
name: Cappi, Massimo
name: Chartas, George
name: Dadina, Mauro
name: Decarli, Roberto
name: Jin, Xiangyu
name: Keeton, Charles R.
name: Venemans, Bram P.
name: Walter, Fabian
name: Wang, Ran
name: Wu, Xue-Bing
name: Yue, Minghao
name: Zabludoff, Ann
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report X-ray observations of the most distant known gravitationally lensed quasar, J0439+1634 at $z=6.52$, which is also a broad absorption line (BAL) quasar, using the XMM-Newton Observatory. With a 130 ks exposure, the quasar is significantly detected as a point source at the optical position with a total of 358$^{+19}_{-19}$ net counts using the EPIC instrument. By fitting a power-law plus Galactic absorption model to the observed spectra, we obtain a spectral slope of $Γ=1.45^{+0.10}_{-0.09}$. The derived optical-to-X-ray spectral slope $α_{\rm{ox}}$ is $-2.07^{+0.01}_{-0.01}$, suggesting that the X-ray emission of J0439+1634 is weaker by a factor of 18 than the expectation based on its 2500 Angstrom luminosity and the average $α_{\rm{ox}}$ vs. luminosity relationship. This is the first time that an X-ray weak BAL quasar at $z>6$ has been observed spectroscopically. Its X-ray weakness is consistent with the properties of BAL quasars at lower redshift. By fitting a model including an intrinsic absorption component, we obtain intrinsic column densities of $N_{\rm{H}}=2.8^{+0.7}_{-0.6}\times10^{23}\,\rm{cm}^{-2}$ and $N_{\rm{H}}= 4.3^{+1.8}_{-1.5}\times10^{23}\,\rm{cm}^{-2}$, assuming a fixed $Γ$ of 1.9 and a free $Γ$, respectively. The intrinsic rest-frame 2--10 keV luminosity is derived as $(9.4-15.1)\times10^{43}\,\rm{erg\,s}^{-1}$, after correcting for lensing magnification ($μ=51.3$). The absorbed power-law model fitting indicates that J0439+1634 is the highest redshift obscured quasar with a direct measurement of the absorbing column density. The intrinsic high column density absorption can reduce the X-ray luminosity by a factor of $3-7$, which also indicates that this quasar could be a candidate of intrinsically X-ray weak quasar.
description: 8 pages, 3 figures, 1 table; Accepted for publication in ApJL
La progettazione di nuovi spazi educativi per l’infanzia: da Ellen Key a Maria Montessori
Creators: name: Pironi, Tiziana
Publisher: name: Studi sulla Formazione
Year: 2011

description: The essay presents a comparison between the thought of Ellen Key and that of Maria Montessori. Changes that involved the role of women, caught in its interdependence with the development of new educational practices, were the center of the theoretical contribution of Ellen Key. Maria Montessori believed that only women work outside the home would guarantee the economic independence necessary to form a union on sentiment rather than on utilitarian calculations and therefore she did not seem to share the concerns of the Key on an increasingly massive female entry into the world of work. The paper offers an updated reflection on the work of two scholars of education.
description: Studi sulla Formazione, Anno XIII, I-2010
Microlensing-Based Estimate of the Mass Fraction in Compact Objects in Lens
Creators: name: Mediavilla, E.
name: Munoz, J. A.
name: Falco, E.
name: Motta, V.
name: Guerras, E.
name: Canovas, H.
name: Jean, C.
name: Oscoz, A.
name: Mosquera, A. M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We estimate the fraction of mass that is composed of compact objects in gravitational lens galaxies. This study is based on microlensing measurements (obtained from the literature) of a sample of 29 quasar image pairs seen through 20 lens galaxies. We determine the baseline for no microlensing magnification between two images from the ratios of emission line fluxes. Relative to this baseline, the ratio between the continua of the two images gives the difference in microlensing magnification. The histogram of observed microlensing events peaks close to no magnification and is concentrated below 0.6 magnitudes, although two events of high magnification, $Δm \sim 1.5$, are also present. We study the likelihood of the microlensing measurements using frequency distributions obtained from simulated microlensing magnification maps for different values of the fraction of mass in compact objects, $α$. The concentration of microlensing measurements close to $Δm \sim 0$ can be explained only by simulations corresponding to very low values of $α$ (10% or less). A maximum likelihood test yields $α=0.05_{-0.03}^{+0.09}$ (90% confidence interval) for a quasar continuum source of intrinsic size $r_{s_0}\sim 2.6 \cdot 10^{15} \rm cm$. Regarding the current controversy about Milky Way/LMC and M31 microlensing studies, our work supports the hypothesis of a very low content in MACHOS (Massive Compact Halo Objects).
The initial mass function of stars and the star-formation rates of galaxies
Creators: name: Kroupa, Pavel
name: Jerabkova, Tereza
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The measured star-formation rates (SFRs) of galaxies comprise an important constraint on galaxy evolution and also on their cosmological boundary conditions. Any available tracer of the SFR depends on the shape of the mass-distribution of formed stars, i.e. on the stellar initial mass function (IMF). The luminous massive stars dominate the observed photon flux while the dim low-mass stars dominate the mass in the freshly formed population. Errors in the number ratio of the massive to low-mass stars lead to errors in SFR measurements and thus to errors concerning the gas-accretion-rates and the gas-consumption time-scales of galaxies. The stellar IMF has traditionally been interpreted to be a scale-invariant probability density distribution function (PDF), but it may instead be an optimal distribution function. In the PDF interpretation, the stellar IMF observed on the stales of individual star clusters is equal to the galaxy-wide IMF (gwIMF) which, by implication, would be invariant. In this Chapter we discuss the fundamental properties of the IMF and of the gwIMF, the nature of both and their systematic variability as indicated by measurements and theoretical expectations, and we discuss the implications for the SFRs of galaxies and their main sequence. The importance of the putative most-massive-star-mass vs stellar-mass-of-the-hosting-embedded-cluster (mmax-Mecl) relation and its possible establishment during the proto-stellar formation phase, is emphasised.
description: LaTex, 62 pages, 8 figures. This is Chapter 2 in the book "Star-formation Rates of Galaxies", edited by Veronique Buat and Andreas Zezas, published in April 2021 by Cambridge University Press [ISBN: 9781107184169]. This arXiv version contains additional material in Sec. 1.1.1, 1.1.2, 1.2, 1.3 and 1.7.1