bluuebunny/crossref_metadata_2025_split huggingface dataset:
An online updated linear power flow model based on regression learning
Authors: An Molin , Lu Tianguang , Han Xueshan 
Published: May 2024

AbstractThe linear power flow (LPF) model is widely used in the optimization, operation, and control of distribution networks. These applications require the LPF model to be accurate, fast, and simple in order to simplify calculations as well as to efficiently perform operations and scheduling. In addition, it is difficult to realize the online update of parameters in the existing LPF models. The model retraining brings serious data burden and inefficiency. To serve these applications and comply with requirements, a brand new LPF model is proposed in this paper. A quadratic power flow model is trained by regression learning first, and then the proposed LPF model is derived by Taylor expansion. After only one initial regression learning, the proposed LPF model no longer needs retraining when updated. The refreshed parameter is simply updated online according to the real‐time measurement data, which improves the generalization ability. In conclusion, the proposed LPF model is accurate, generalizable, and greatly minimizes the data consumption and running time. Performance analysis verifies these superiorities.
Quantum model of galactic halos with an Navarro–Frenk–White dark matter profile
Authors: Musielak Z. E. 
Published: May 2024

Context. A quantum model of a cold dark matter galactic halo is developed. The model requires specifying the mass and radius of the halo as well as its density profile. The structure of the halo resulting from the theory is predicted and its physical properties are determined. Verification of these theoretical predictions by observations is proposed and discussed.
Aims. The model is constructed by analytically solving the governing equation and using its time-independent solutions to determine the internal structure of a galactic halo with an Navarro–Frenk–White cold dark matter density profile.
Methods. The governing equation that is the basis of the developed theory is derived from the irreducible representations of the extended Galilean group. The method of finding the solutions is analytical, even though an Navarro–Frenk–White density profile is used in the calculations.
Results. The theory predicts a halo with a core composed of free dark matter particles that move randomly with frequent collisions. It also predicts an envelope in which the particles are confined to their orbits, which are quantized. Except in the close vicinity of the core, the population of the orbits remains fixed, and physical reasons for the nonexistence of quantum jumps between these orbits are presented.
Conclusions. A quantum model of a galactic cold dark matter halo with a given Navarro–Frenk–White density profile is constructed. It predicts a quantum structure of the halo that is significantly different than any previously known dark matter model. The quantum model naturally accounts for dark matter being collisionless, and it predicts that dark matter can only emit radiation of one fixed frequency. The values of this frequency are computed for dark matter particles of different masses. A potential observational verification of the theory is also discussed.
The GAPS Programme at TNG
Authors: Sicilia D. , Scandariato G. , Guilluy G. , Esposito M. , Borsa F. , Stangret M. , Di Maio C. , Lanza A. F. , Bonomo A. S. , Desidera S. , Fossati L. , Nardiello D. , Sozzetti A. , Malavolta L. , Nascimbeni V. , Rainer M. , D’Arpa M. C. , Mancini L. , Singh V. , Zingales T. , Affer L. , Bignamini A. , Claudi R. , Colombo S. , Cosentino R. , Ghedina A. , Micela G. , Molinari E. , Molinaro M. , Pagano I. , Piotto G. 
Published: May 2024

Context. HAT-P-67 b is one of the lowest-density gas giants known to date, making it an excellent target for atmospheric characterisation through the transmission spectroscopy technique.
Aims. In the framework of the GAPS large programme, we collected four transit events of HAT-P-67 b with the aim of studying the exoplanet atmosphere and deriving the orbital projected obliquity.
Methods. We exploited the high-precision GIARPS (GIANO-B + HARPS-N) observing mode of the Telescopio Nazionale Galileo (TNG) along with additional archival TESS photometry to explore the activity level of the host star. We performed transmission spec-troscopy, both in the visible (VIS) and in the near-infrared (NIR) wavelength range, and we analysed the Rossiter–McLaughlin (RML) effect when fitting both the radial velocities and the Doppler shadow. Based on the TESS photometry, we redetermined the transit parameters of HAT-P-67 b.
Results. By modelling the RML effect, we derived a sky-projected obliquity of (2.2 ± 0.4)°, indicating an aligned planetary orbit. The chromospheric activity index log R′HK, the CCF profile, and the variability in the transmission spectrum of the Hα line suggest that the host star shows signatures of stellar activity and/or pulsation. We found no evidence of atomic or molecular species in the optical transmission spectra, with the exception of pseudo-signals corresponding to Cr I, Fe I, Ha, Na I, and Ti I. In the NIR range, we found an absorption signal of the He I triplet of 5.56−0.30+0.29% (19.0σ), corresponding to an effective planetary radius of ~3 Rp (where Rp ~ 2 RJ), which extends beyond the planet’s Roche lobe radius.
Conclusions. Owing to the stellar variability and the high uncertainty of the model, we could not confirm the planetary origin of the signals found in the optical transmission spectrum. On the other hand, we were able to confirm previous detections of the infrared He I triplet, providing a 19.0σ detection. Our finding indicates that the planet’s atmosphere is evaporating.
Adherence to follow-up and resource use after abnormal FIT-screening: Evaluation of the Danish colorectal cancer screening program
Authors: Jørgensen Susanne Fogh , Larsen Pernille Thordal , Erichsen Rune , Andersen Berit , Rebolj Matejka , Njor Sisse 
Published: May 2024

Abstract
Background and study aims The effectiveness of colorectal cancer screening programs depends on adherence to surveillance protocols for screening-positive individuals. We evaluated adherence in the Danish population-based screening program and estimated the volume of diagnostic resources required to achieve this adherence.
Patients and methods In this register- and population-based study, we included individuals with a positive fecal immunochemical test (FIT) screening from 2014 to 2017 and followed them until mid-2022. All endoscopic, imaging, and surgical procedures performed at public and private hospitals were identified. Adherence to national protocols was reported in terms of proportions and timeliness. Use of diagnostic and surveillance procedures was estimated during a 4-year post-screening period.
Results Among 82,221 individuals with a positive FIT test, 84% had a baseline colonoscopy within 1 month. After removal of intermediate or high-risk adenomas, 12% and 6%, respectively, did not have any follow-up. Only ~50% had timely surveillance. Approximately 10% to 20%, depending on their referral diagnosis, did not have a second surveillance colonoscopy. In addition, 12% with a negative colonoscopy had a second colonoscopy within 4 years.
Conclusions High adherence to baseline colonoscopy after positive FIT-screening is followed by lower adherence throughout the adenoma surveillance program. Better adherence to the guidelines could potentially improve the effectiveness and efficiency of the screening program.
The Effect of Hyperemesis Gravidarum on Macular Thickness, Corneal
Thickness, and Intraocular Pressure in Pregnancy
Authors: Okuyan Erhan , Akgül Ozlem , Baysal Zeki , Mangan Mehmet Serhat , Bayramoglu Denizhan , Tureyici Lena 
Published: May 2024

Abstract
Aim Physiological changes in intraocular pressure as well as in the cornea
and macula may occur during pregnancy. Therefore, we decided to investigate the
effect of hyperemesis gravidarum on macular thickness, corneal thickness and
intraocular pressure (IOP).
Material and Methods A total of 110 people, 55 of whom were diagnosed with
hyperemesis gravidarum and 55 of whom were in the control group, were included
in the study. The inclusion criteria for the study were as follows: first
trimester (8–14 weeks of gestation) pregnancy with positive fetal heartbeat and
no history of systemic disease, no continuous use of medication, diagnosis of
hyperemesis gravidarum (ketonuria and weight loss of more than 3 kilograms or 5%
of body weight), body mass index (BMI) within normal limits, age between 18 and
40, no alcohol use or smoking.
Results In the HG group compared to the control group, there was a
difference between the CCT values of both the right and left eyes (p<0.01).
There was a difference in both right and left IOP values in patients in the HG
group compared to the control group (p<0.05), and there was no correlation
between ketonuria scores and right and left eye CCT values, right and left eye
macular thickness, and right and left eye pressure in patients diagnosed with HG
(p>0.05).
Conclusion In hyperemesis gravidarum, changes occur in IOP, corneal
thickness, and macular thickness. In ophthalmic examinations in the
pregestational period, especially for women with systemic disease, it may be
important for clinicians to take the necessary precautions in this regard.
Associations between Parental Engagement in the Neonatal Intensive Care Unit and Neighborhood-Level Socioeconomic Status
Authors: Wallace Lisa S. , Okito Ololade , Mellin Kelsi , Soghier Lamia 
Published: May 2024

Objective This study aimed to (1) determine the effect of neighborhood-level socioeconomic status (SES), which considers the social and physical environment where a person lives, on parental engagement in the Neonatal Intensive Care Unit (NICU) and (2) compare the relationships between parental engagement and individual versus neighborhood-level measures of SES.
Study Design In this cohort study, parents (n = 45) of premature neonates ≤34 weeks' gestation were assessed at 2 and 6 weeks after birth from December 2017 to October 2019. Neighborhood-level SES was determined using census data per the Association of Maternal and Child Health Programs' methodology, and parents self-reported their education level as an individual-level measure of SES. Data on frequency of engagement in NICU activities, including telephone updates, visitation, providing expressed breastmilk, and participating in kangaroo care, were collected from the electronic medical record. Parent psychosocial factors were assessed using validated surveys. Statistical analysis was performed using Fisher's exact test, t-test, and logistic regression.
Results In multivariate regression analysis, disadvantaged neighborhood-level SES was associated with decreased odds of kangaroo care (OR = 0.16, 95% CI: [0.03–0.89]) and visitation (OR = 0.14, 95% CI: [0.02–0.87]), while lower individual-level SES was not significantly associated with kangaroo care, visiting, calling, or pumping (p > 0.05).
Conclusion Parental engagement was more consistently and significantly associated with neighborhood-level SES than with individual-level SES. Therefore, neighborhood-level SES measures may be more explanatory than individual-level SES measures. Further studies and targeted interventions are needed to address disparities in the frequency of kangaroo care and visitation according to SES.
Key Points
Organocatalytic [3+2] Annulation of β-Tetralones with α,β-Unsaturated Aldehydes
Authors: Zhang Huiwen , Yu Xinhong , Li Zheyao , Zhang Xinzhe , Yu Jiawei 
Published: May 2024

AbstractThe NBS-mediated organocatalytic cascade synthesis of 4,5-dihydronaphtho[2,1-b]furan-1-carbaldehydes from α,β-unsaturated aldehydes and 2-tetralones have been developed. In this synthesis strategy, the C1 of in situ generated brominated 2-tetralone was used as identical twin electron donor–acceptor, and the Cβ and Cα of enals were used as the heterogeneous twin electron acceptor–donors. The process has been realized by a synergistic amine/p-TSA catalyzed one-pot cascade Michael addition–cyclopropanation–ring opening–oxa-Michael addition under mild conditions and without the use of transition metals.
Fracturas de la extremidad proximal de húmero en tres y cuatro fragmentos en el anciano: ¿Tratamiento conservador o artroplastia reversa?
Authors: Lopez María del Coro Solans , Conde Carlos Rodríguez , González José Carlos Álvarez , Mombiela Fausto López , Martín Ángel Pérez , Bernardo Mikel Aburto 
Published: May 2024

Resumen
Objetivo Comparar los resultados funcionales obtenidos en dos cohortes de pacientes ancianos tratados de forma quirúrgica (artroplastia reversa de hombro) versus tratamiento conservador.
Material y Métodos Estudio ambispectivo, no aleatorizado. Se incluyeron pacientes de 75 años o más, 15 tratados de forma quirúrgica y 16 siguieron tratamiento conservador. Seguimiento mínimo de 12 meses. A los 3, 6 y 12 meses de la fractura evaluamos las escalas ASES, Constant-Murley and Disabilities of the Arm, Shoulder and Hand score (DASH) y EVA. Además evaluamos los resultados radiológicos y las complicaciones.
Resultados No encontramos diferencias significativas para las escalas ASES, DASH, ni EVA .El grupo tratado de forma quirúrgica obtuvo a los 12 meses una puntuación media en la escala Constant mayor, diferencia estadísticamente significativa(75.1 +/-10.3 vs. 51.9 +/-12.4 p = 0.001). Además presentaban mayor rango de movilidad para flexión y rotación externa (128.9 +/-17 versus 99.3 +/-20.1 p = 0.001, and 35.7 +/-13.9 vs. 23.4 +/-15.5 p = 0.032). El 43% de los pacientes tratados mediante artroplastia reversa presentaban tuberosidades normoposicionadas y mejores resultados en las escalas versus pacientes con tuberosidades ausentes o malposicionadas. El grupo sometido a cirugía no presentó mayor tasa de complicaciones.
Conclusiones El tratamiento conservador en las fracturas de EPH en tres y cuatro fragmentos en pacientes ancianos ofrece buenos resultados en cuanto a dolor y funcionalidad en la mayoría de pacientes. Falta por definir qué pacientes por tener alta demanda funcional serían candidatos a tratamiento quirúrgico de entrada.
Nivel de Evidencia Nivel III
The New Delivery Method for Cardioplegic Solution in Type A Aortic Dissection
Authors: Rosseikin Evgeny V. , Kobzev Evgeny E. , Gornostaev Alexander A. 
Published: May 2024

AbstractAdequate myocardial protection is crucial for a successful cardiac surgery. In type A aortic dissection, standard methods of delivery of cardioplegic solution may not be adequately effective. Ineffectiveness may happen due to both features of the anatomy of the dissection and to peculiarities of the delivery method itself. We present a new method of delivering a cardioplegic solution using a Foley catheter through the orifice of the brachiocephalic trunk or the left common carotid artery.
The Prevalence of Coronary Artery Disease in Bicuspid Aortic Valve Patients: An Overview of the Literature
Authors: Dolmaci Onur B. , Hilhorst Tijmen L. , Malekzadeh Arjan , Mertens Bart J.A. , Klautz Robert J.M. , Poelmann Robert E. , Grewal Nimrat 
Published: May 2024

AbstractThe prevalence of coronary artery disease (CAD) in bicuspid aortic valve (BAV) patients is a debatable topic. Several studies have indicated that BAV patients have a lower prevalence of CAD compared with patients with a tricuspid aortic valve (TAV), but the effects of age and gender have not always been considered. This systematic review provides an overview of articles which report on CAD in BAV and TAV patients. Searches were executed in April 2021 and January 2022 according to the PRISMA (Preferred Reporting Items for Systematic reviews and Meta-analyses) guidelines in three online databases: Medline, Embase, and Scopus. Screening and data extraction was done by two investigators separately. Primary and secondary outcomes were compared between BAV and TAV patients; a fixed effects model was used for correcting on confounders. Literature search yielded 1,529 articles with 44 being eligible for inclusion. BAV patients were younger (56.4 ± 8.3 years) than TAV patients (64 ± 10.3 years, p < 0.001). All CAD risk factors and CAD were more prevalent in TAV patients. No significant difference remained after correcting for age and gender as confounders. BAV patients have a lower prevalence of CAD and CAD risk factors compared with TAV patients. However, when the age differences between both groups are considered in the analyses, a similar prevalence of both CAD and CAD risk factors is found.
To Study Perioperative Changes in Plasma Phenytoin Levels in Patients with Brain Tumor Undergoing Craniotomy and Its Correlation with Postoperative Seizures
Authors: Kumawat Manjulata , Singh Amanpreet , Kumar Prashant , Johar Sanjay , Singh Ishwar 
Published: May 2024

Abstract
Introduction Phenytoin, although commonly used for postoperative seizure prophylaxis, exhibits variable results in mitigating seizure frequency following craniotomy. These discrepancies may be linked to a reduction in plasma phenytoin levels subsequent to the surgical intervention.
Aims This prospective study aims to characterize changes in plasma phenytoin levels after craniotomy and their relationship with intraoperative blood loss.
Methods Fifty consecutive patients were enrolled in this study after obtaining written informed consent. These patients had either been on oral phenytoin for at least 7 days or had received an intravenous loading dose before undergoing craniotomy. Serum phenytoin levels were measured 24 hours preoperatively, immediately before craniotomy (prior to skin incision), postcraniotomy (after skin closure), and 24 hours postcraniotomy. Additionally, intraoperative blood loss was calculated using a modified Gross formula.
Results Immediately following craniotomy, there was a statistically significant mean decline of 28.16% in serum phenytoin levels. Furthermore, the analysis revealed a robust positive correlation between the decrease in phenytoin concentration level and several factors, including blood loss during surgery, the duration of the surgical procedure, intravenous fluids administered during surgery, and the occurrence of postoperative seizures.
Conclusion This study underscores the potential utility of routinely measuring perioperative serum phenytoin levels in high-risk patients to prevent postcraniotomy seizures. Moreover, it suggests that patients with substantial intraoperative blood loss may benefit from an additional bolus dose of phenytoin toward the end of the surgical procedure.
Evaluation of Clinical and Laboratory Features of Rhinovirus Infections in Children
Authors: Yilmaz Naci , Ozkaya-Parlakay Aslinur , Yigit Metin , Gulhan Belgin , Yuksek Saliha Kanik , Bayhan Gulsum Iclal , Dinc Bedia , Korukluoglu Fatma Gulay 
Published: May 2024

Abstract
Objective Our aim in this study was to evaluate the clinical characteristics of patients afflicted with rhinovirus (RV) infections, compare their laboratory findings with a healthy population, determine the features of the clinical course of the illness in individuals with a chronic disease, and set out the risk factors involved in the need for mechanical ventilation (MV).
Methods The study was conducted on 318 pediatric patients aged 0 to 18 years diagnosed with RV infection. Patients were divided into two main groups, those with and without a chronic disease. The group with chronic disease was divided into four subgroups. Children with RV were compared with a control group of 231 healthy children.
Results The most common symptoms and signs were wheeze (65.4%), cough (65.1%), and tachypnea (50.3%). Compared with the healthy population, RV-positive patients showed significant increases in their white blood cell (WBC), neutrophil, and platelet counts, and in their delta neutrophil index and C-reactive protein values (all p < 0.001). The most important risk factors in terms of the need for MV were elevated WBC (odds ratio [OR] = 1.404, 95% confidence interval [CI]: 1.059–1.862), chronic lung disease (CLD) (OR = 5.196, 95% CI: 2.296–11.762), reticular involvement (OR = 3.132, 95% CI: 1.259–7.793), and lobar involvement (OR = 10.575, 95% CI: 13.434–32.564).
Conclusion It is of vital importance that individuals with asthma and CLD are closely monitored and protected during RV seasonal periods as they are most at risk of severe infection, which can require high-flow nasal cannula and MV.
Tendencias en la cirugía de artroplastía total de rodilla en Chile. ¿Cómo las estamos operando?
Authors: Edwards Diego , Casas-Cordero Juan Pablo , Marín Felipe , Alonso Julián , Cerda Daniel , Acosta Manuel , Zelaya Gerardo 
Published: May 2024

Resumen
Introducción La artroplastía total de rodilla (ATR), que ha tenido un aumento importante en la población en las últimas décadas, presenta una gran variación en su estudio y técnica entre los distintos países. En la actualidad no hay datos nacionales registrados que evalúen la forma de su implementación.
Objetivo Registrar las tendencias respecto de la ATR en distintos aspectos en Chile y compararlas con los registros de otros países.
Materiales y Métodos Se realizó una encuesta vía email a cirujanos de rodilla en Chile considerando cuatro aspectos: generalidades, estudio preoperatorio, técnica quirúrgica y técnica de cementación. Se excluyeron las encuestas que no rellenadas por completo. Se analizaron los datos generales y separados según años de experiencia (ADE). Se compararon los datos con los obtenidos en estudios internacionales.
Resultados Se obtuvieron 87 encuestas completas. La mayoría de los encuestados realizaba entre 25 y 50 ATR en 1 año (44%), y el 16%, más de 75. Sólo un 20% utilizaba la modalidad ambulatoria, y un 43% creía que siempre deben ser hospitalizadas (mayor frecuencia en los cirujanos con más de 10 ADE). Un 18% utilizaba algún sistema robótico, con mayor frecuencia en cirujanos con más de 10 ADE; los sistemas más usados fueron ROSA y CORI. El 90% creía que la ATR debería ser parte del programa de Garantías Explícitas de Salud (GES), sin diferencias según ADE. El 81% usaba sistema estabilizado posterior (posterior-estabilized, PS, en inglés), 96% realizaba un abordaje parapatelar medial, 82% usaba guía extramedular tibial, 41% tendía a recambiar la patela, y un 35% no usaba torniquete (ninguna de las variables mostró diferencias según ADE). Sólo un 31% utilizaba cementación al vacío (mayor frecuencia en el grupo con menos de 10 ADE), 95% colocaba el cemento en componentes y en hueso, 75% colocaba en la quilla, y 56% utilizaba el dedo para colocarlo (sólo 22% con pistola). La secuencia más frecuente de cementación fue tibia-fémur-patela. En la mayoría de los aspectos evaluados, se observaron diferencias importantes con estudios de otros países.
Conclusión Existe una gran variabilidad en la realización de ATR en Chile, con tendencias distintas a las de otros países. En general, en relación con los distintos ADE, no hay grandes diferencias en la técnica quirúrgica, sí habiendo diferencias en la técnica de cementación y en el uso de sistemas robóticos.