bluuebunny/crossref_metadata_2025_split huggingface dataset:
Elaboración de Aglomerados Particulados a Partir del Reciclaje de Envases Multicapa Reforzados con PET-PP
Authors: Anacleto Morales Ruth , Enríquez Pérez Ma. De los Ángeles , Rosales Davalos Jaime 
Published: September 2024

El presente trabajo se analiza la proporción ideal para obtener aglomerados particulados, a partir del reciclaje de envases multicapas (contiene 75% de cartón, 20% de polietileno y 5% de aluminio) postconsumo, reforzados con tereftalato de polietileno (PET) y polipropileno (PP), con la finalidad de contribuir a reducir la generación de residuos. La metodología consiste en la limpieza y secado de la materia prima, posteriormente se muele hasta obtener un tamaño de partícula de 3mm aproximadamente; se homogenizan los materiales y finalmente, se realiza un prensado en caliente, durante este proceso el refuerzo se funde, permitiendo una mejor adherencia de los componentes. Para las pruebas físico-mecánicas se usa como referencias la Norma NMX-C-013-1978, ASTM D 1037-12 y NMX-C-036-ONNCCE-2013. Se obtienen aglomerados ligeros duros al tacto, pueden ser cortados y taladrados sin presencia de grietas, son ignífugos, hidrofóbicos y poseen una resistencia de ruptura de (10.83MPa), se comportan como un material dúctil con memoria de forma. Los materiales obtenidos pueden ser utilizados en la construcción de interiores o como soportes catalíticos para la degradación de colorantes orgánicos.
Quartz Clouds in the Dayside Atmosphere of the Quintessential Hot Jupiter HD 189733 b
Authors: Inglis Julie , Batalha Natasha E. , Lewis Nikole K. , Kataria Tiffany , Knutson Heather A. , Kilpatrick Brian M. , Gagnebin Anna , Mukherjee Sagnick , Pettyjohn Maria M. , Crossfield Ian J. M. , Foote Trevor O. , Grant David , Henry Gregory W. , Lally Maura , McKemmish Laura K. , Sing David K. , Wakeford Hannah R. , Zapata Trujillo Juan C. , Zellem Robert T. 
Published: September 2024

Abstract
Recent mid-infrared observations with JWST's Mid-Infrared Instrument Low Resolution Spectrometer (MIRI LRS) have resulted in the first direct detections of absorption features from silicate clouds in the transmission spectra of two transiting exoplanets, WASP-17 b and WASP-107 b. In this Letter, we measure the mid-infrared (5–12 μm) dayside emission spectrum of the benchmark hot Jupiter HD 189733 b with MIRI LRS by combining data from two secondary-eclipse observations. We confirm the previous detection of H2O absorption at 6.5 μm from Spitzer's Infrared Spectrograph (IRS) and additionally detect H2S as well as an absorption feature at 8.7 μm in both secondary-eclipse observations. The excess absorption at 8.7 μm can be explained by the presence of small (∼0.01 μm) grains of SiO2[s] in the uppermost layers of HD 189733 b’s dayside atmosphere. This is the first direct detection of silicate clouds in HD 189733 b’s atmosphere, and the first detection of a distinct absorption feature from silicate clouds on the dayside of any hot Jupiter. We find that models including SiO2[s] are preferred by 6–7σ over clear models and those with other potential cloud species. The high-altitude location of these silicate particles is best explained by formation in the hottest regions of HD 189733 b’s dayside atmosphere near the substellar point. We additionally find that HD 189733 b’s emission spectrum longward of 9 μm displays residual features not well captured by our current atmospheric models. When combined with other JWST observations of HD 189733 b’s transmission and emission spectra at shorter wavelengths, these observations will provide us with the most detailed picture to date of the atmospheric composition and cloud properties of this benchmark hot Jupiter.
A Far-ultraviolet-detected Accretion Shock at the Star–Disk Boundary of FU Ori
Authors: Carvalho Adolfo S. , Hillenbrand Lynne A. , France Kevin , Herczeg Gregory J. 
Published: September 2024

Abstract
FU Ori objects are the most extreme eruptive young stars known. Their 4–5 mag photometric outbursts last for decades and are attributed to a factor of up to 10,000 increase in the stellar accretion rate. The nature of the accretion disk-to-star interface in FU Ori objects has remained a mystery for decades. To date, attempts to directly observe a shock or boundary layer have been thwarted by the apparent lack of emission in excess of the accretion disk photosphere down to λ = 2300 Å. We present a new near-ultraviolet and the first high-sensitivity far-ultraviolet (FUV) spectrum of FU Ori. The FUV continuum is detected for the first time and, at λ = 1400 Å, is more than 104 times brighter than predicted by a viscous accretion disk. We interpret the excess as arising from a shock at the boundary between the disk and the stellar surface. We model the shock emission as a blackbody and find that the temperature of the shocked material is T
FUV ≈ 16,000 ± 2000 K. The shock temperature corresponds to an accretion flow along the surface of the disk that reaches a velocity of 40 km s−1 at the boundary, consistent with predictions from simulations.
Quantum Statistical Effects on Warm Dark Matter and the Mass Constraint from the Cosmic Structure at Small Scales
Authors: Zhang Zhijian , Lin Weikang 
Published: September 2024

Abstract
The suppression of the small-scale matter power spectrum is a distinct feature of warm dark matter (WDM), which permits a constraint on the WDM mass from galaxy surveys. In the thermal relic WDM scenario, quantum statistical effects are not manifest. In a unified framework, we investigate the quantum statistical effects for a fermion case with degenerate pressure and a boson case with Bose–Einstein condensation (BEC). Compared to the thermal relic case, the degenerate fermion case only slightly lowers the mass bound, while the boson case with a high initial BEC fraction (≳90%) significantly lowers it. On the other hand, the BEC fraction drops during the relativistic-to-nonrelativistic transition and completely disappears if the initial fraction is below ∼64%. Given the rising interest in resolving the late-time galaxy-scale problems with boson condensation, a question is posed on how a high initial BEC fraction can be dynamically created so that a dark matter condensed component remains today.
A Growing Braking Index and Spin-down Swings for the Pulsar PSR B0540–69
Authors: Espinoza Cristóbal M. , Kuiper Lucien , Ho Wynn C. G. , Antonopoulou Danai , Arzoumanian Zaven , Harding Alice K. , Ray Paul S. , Younes George 
Published: September 2024

Abstract
The way pulsars spin down is not understood in detail, but a number of possible physical mechanisms produce a spin-down rate that scales as a power of the rotation rate (

ν

̇

∝
−

ν

n

), with the power-law index n called the braking index. PSR B0540−69 is a pulsar that in 2011, after 16 yr of spinning down with a constant braking index of 2.1, experienced a giant spin-down change and a reduction of its braking index to nearly zero. Here, we show that, following this episode, the braking index monotonically increased during a period of at least 4 yr and stabilized at ∼1.1. We also present an alternative interpretation of a more modest rotational irregularity that occurred in 2023, which was modeled as an anomalous negative step of the rotation rate. Our analysis shows that the 2023 observations can be equally well described as a transient swing of the spin-down rate (lasting ∼65 days), and the Bayesian evidence indicates that this model is strongly preferred.
Nonlinear Alfvén-wave Dynamics and Premerger Emission from Crustal Oscillations in Neutron Star Mergers
Authors: Most Elias R. , Kim Yoonsoo , Chatziioannou Katerina , Legred Isaac 
Published: September 2024

Abstract
Neutron stars have solid crusts threaded by strong magnetic fields. Perturbations in the crust can excite nonradial oscillations, which can in turn launch Alfvén waves into the magnetosphere. In the case of a compact binary close to merger involving at least one neutron star, this can happen through tidal interactions causing resonant excitations that shatter the neutron star crust. We present the first numerical study that elucidates the dynamics of Alfvén waves launched in a compact binary magnetosphere. We seed a magnetic field perturbation on the neutron star crust, which we then evolve in fully general-relativistic force-free electrodynamics using a GPU-based implementation. We show that Alfvén waves steepen nonlinearly before reaching the orbital light cylinder, form flares, and dissipate energy in a transient current sheet. Our results predict radio and X-ray precursor emission from this process.
Alpha–Proton Differential Flow of a Coronal Mass Ejection at 15 Solar Radii
Authors: Zhang Xuechao , Song Hongqiang , Wang Xiaoqian , Li Leping , Fu Hui , Wang Rui , Chen Yao 
Published: September 2024

Abstract
Alpha–proton differential flow (V

α
p
) of coronal mass ejections (CMEs) and solar wind from the Sun to 1 au and beyond could influence the instantaneous correspondence of absolute abundances of alpha particles (He2+/H+) between the solar corona and interplanetary space as the abundance of a coronal source can vary with time. Previous studies based on Ulysses and Helios showed that V

α
p
is negligible within CMEs from 5 to 0.3 au, similar to slow solar wind (<400 km s−1). However, recent new observations using Parker Solar Probe (PSP) revealed that the V

α
p
of slow wind increases to ∼60 km s−1 inside 0.1 au. It is important to answer whether the V

α
p
of CMEs exhibits similar behavior near the Sun. In this Letter, we report the V

α
p
of a CME measured by PSP at ∼15 R
⊙ for the first time, which demonstrates that the V

α
p
of CMEs is obvious and complex inside 0.1 au while keeping lower than the local Alfvén speed. A very interesting point is that the same one CME duration can be divided into A and B intervals clearly with Coulomb number below and beyond 0.5, respectively. The means of V

α
p
and alpha-to-proton temperature ratios of interval A (B) is 96.52 (21.96) km s−1 and 7.65 (2.23), respectively. This directly illustrates that Coulomb collisions play an important role in reducing the nonequilibrium features of CMEs. Our study indicates that the absolute elemental abundances of CMEs also might vary during their propagation.
Epidemiology of Lumbar Spine Fractures: Twenty-Year Assessment of Nationwide Emergency Department Visit Data
Authors: Kuharski Michael J. , Daher Mohammad , Zhou Jack J. , Ikwuazom Chibuokem P. , Andrews Carolyn , Alam Juhayer , Scheer Ryan C. , Lou Mary , Alsoof Daniel , Balmaceno-Criss Mariah , Shah Neil V. , Bou Monsef Jad , Diebo Bassel G. , Paulino Carl B. , Daniels Alan H. 
Published: September 2024

Background
Lumbar spine fractures are common injuries associated with substantial morbidity for patients and socioeconomic burden. This study sought to epidemiologically analyze lumbar spine fractures by mechanism of injury and identify temporal trends in patient demographics and disposition, which few studies have previously evaluated.

Materials and Methods
A retrospective analysis was done of the US National Electronic Injury Surveillance System (NEISS) database between 2003 and 2022. The sample contained all patients 2 to 101 years old with product-related lumbar fractures presenting to participating institutions' emergency departments. A total of 15,196 unweighted injuries (642,979 weighted injuries) were recorded.

Results

Overall, there was a 20-year incidence rate of 10.14 cases per 100,000 person-years with a 2-fold increase in fracture incidence. Females were more prone to lumbar fracture than males (
P
=.032). Injuries primarily stemmed from a fall (76.6%). The incidence of lumbar fracture increased most significantly in older patients, with patients 80 years and older showing the greatest annual increase (β=8.771,
R
2
=0.7439,
P
<.001) and patients 60 to 69 years showing the greatest percent increase with a 3.24-fold increase in incidence. Most (58.9%) of the fractures occurred at home. Females were more often injured at home compared with males (
P
<.001), who more often sustained lumbar fractures during recreational or athletic activity (
P
<.001). All patients older than 40 years showed at least a doubling in incidence rate of lumbar fracture between 2003 and 2022.

Conclusion

These data demonstrate the pressing need to address poor bone health in the aging population, shown here to have an increasing fracture burden. [
Orthopedics
. 2024;47(6):e297–e302.]
Improved Visual Outcomes With Dedicated Retina Call Block Time in Primary Retinal Detachment Repair
Authors: Finn Matthew J. , Martinez-Velazque Luis , Zeng Rebecca , Feng Yilin , Patel Nimesh A. , Miller John B. 
Published: September 2024

Background and Objective
To investigate visual outcomes for macula-off rhegmatogenous retinal detachments (RRD) compared to macula-on RRDs based on duration from diagnosis to surgical repair performed by a single surgeon with access to a retina call block system.

Patients and Methods

A case-control study reviewing the visual acuity (VA) after surgical repair in consecutive macula-off (
n
= 127) and maculaon (
n
= 63) RRD comparison eyes that underwent primary RRD repair performed by a single surgeon with dedicated retina call block time.

Results
Our results revealed significantly improved VA in macula-off RRD eyes repaired within 3 days of diagnosis at 3, 6, and 12 months/last follow-up, and that duration from diagnosis to surgery is a predictor of VA at 3- and 12-month/last follow-up postoperative visits.

Conclusion
Our findings support the use of mechanisms that improve access to operating room time, such as a retina call block system, to expedite surgical repair access.

[
Ophthalmic Surg Lasers Imaging Retina
2025;56:30–36.]
MARCH8 Mediates K27-Linked Polyubiquitination of IL-7 Receptor α to Negatively Regulate IL-7–Triggered T Cell Homeostasis
Authors: Gao Deng , Yi Xue-Mei , Feng Lu , Li Shu , Shu Hong-Bing 
Published: September 2024

Abstract
IL-7 is a cytokine produced by stromal cells, which binds to IL-7Rα and plays an important role for homeostasis of T lymphocytes. Excessive activities of IL-7–triggered signaling pathways causes autoimmune diseases. How IL-7–triggered signaling and immune effects are regulated is not fully understood. In this study, we show that the membrane-associated RING-CH (MARCH) E3 ligase family member MARCH8 mediates K27-linked polyubiquitination of IL-7Rα, leading to its lysosomal degradation. Site-directed mutagenesis suggests that MARCH8 meditates polyubiquitination of IL-7Rα at K265/K266, and mutation of these residues renders IL-7Rα resistance to MARCH8-mediated polyubiquitination and degradation. MARCH8 deficiency increases IL-7–triggered activation of the downstream transcription factor STAT5 and transcriptional induction of the effector genes in human T lymphoma cells. MARCH8 deficiency also promotes IL-7–triggered T cell proliferation and splenic memory CD8+ T cell differentiation in mice. Our findings suggest that MARCH8 negatively regulates IL-7–triggered signaling by mediating K27-linked polyubiquitination and lysosomal degradation of IL-7Rα, which reveals a negative regulatory mechanism of IL-7–triggered T cell homeostasis.
Anxiety, Depression, and Quality of Life in the Postnatal Period: A Cross-sectional Analysis in a Tertiary Care Setting in Khammam, Telangana, South India
Authors: Faizan Md. Adil , Kandhi Sri Divya Reddy , Geethanjali  , Raghuram Macharapu , Babu R. Sateesh 
Published: September 2024

Abstract

Introduction:
The postpartum period is a crucial phase marked by significant physical and emotional changes for women. Mental health issues, especially anxiety and depression, can profoundly affect maternal well-being and maternal–infant interactions. Despite growing recognition, comprehensive research on perinatal mental health in India is lacking.

Materials and Methods:
A cross-sectional study surveyed 236 postnatal women in a tertiary care center in Khammam, Telangana. Participants completed standardized questionnaires for depression (Edinburgh Postnatal Depression Scale), anxiety (Perinatal Anxiety Screening Scale), and quality of life (QOL, World Health Organization QOL-BREF). Data analysis utilized descriptive statistics and inferential tests to examine associations between variables.

Results:
The study revealed a significant prevalence of depression (25.42%) and anxiety (24.57%) among postnatal women, with 11% experiencing both. Demographic analysis highlighted age, residency, and education as significant factors associated with mental health outcomes. Participants without depression or anxiety generally reported a higher QOL across various domains compared to those with mental health disorders. Significant differences were observed in physical, psychological, and social relationship domains between participants with and without depression and anxiety.

Conclusion:
This study provides valuable insights into anxiety and depression prevalence among postnatal women and their impact on QOL. Addressing postnatal mental health is crucial for fostering positive maternal–infant relationships. Future interventions should prioritize comprehensive, culturally sensitive approaches to mental health care for postnatal women in India.
A Case Report on Anti-N-methyl-d-aspartate Receptor Encephalitis in a 52-year-old Female with Schizophrenia
Authors: Murke Mukund Purushottam , Deshmukh Suraj Ajay , Khapri Anurag , Rathod Anupam 
Published: September 2024

Abstract
Anti-N-methyl-d-aspartate receptor (NMDAR) encephalitis is a complex neurological and psychiatric disorder. It often presents with psychiatric symptoms, leading to misdiagnosis, but can progress to severe neurological manifestations. In this study, we presented a 52-year-old woman with a 30-year history of schizophrenia who suddenly developed mutism, agitation, and incontinence. Electroencephalography showed generalized slowing, and autoimmune testing revealed NMDAR antibody positivity. Treatment with intravenous methylprednisone led to rapid improvement, highlighting the importance of considering autoimmune causes in such cases. NMDAR encephalitis is a condition with both neurological and psychiatric symptoms. It is often initially mistaken for psychiatric issues. Physicians should carefully assess and be vigilant in psychiatric cases. If routine tests show no significant issues, but the neurological state worsens, considers NMDAR encephalitis, and acts promptly. Delayed treatment can be harmful.
A study on meteorological characteristics and its consequences on human mortality in Rajkot City, Gujarat
Authors: Ranpariya Pooja N. , Solanki Harsha M. , Chudasama Rajesh K. 
Published: September 2024

Abstract

Background:
Climate change presents a crucial threat to human health. The health of human is affected by heat waves and extreme weather events. Hence, the present study was planned to explore weather conditions and their consequences on mortality of human being by accessing the meteorological and mortality data.

Methodology:
Meteorological data include maximum and minimum temperature, average wind speed, and total rainfall; relative humidity was obtained for January 1, 2017–December 31, 2021, from India Meteorological Department, Pune. Trend analysis of climatic variables was done. Human mortality data were obtained from January 1, 2017, to December 31, 2020, from Health Department, Rajkot Municipal Corporation, Rajkot. The impact of temperature and rainfall on mortality was observed.

Results:
Upward trend of maximum temperature, rainfall, and relative humidity while downward trend for minimum temperature and average wind speed was observed. Human mortality due to communicable and noncommunicable diseases was not affected by maximum temperature. The effect of rainfall on mortality due to vector-borne diseases was observed.

Conclusion:
The effect of rainfall on human mortality was observed. Upward and downward trend of climatic variables was not found to be statistically significant. Further study needs to be conducted by analyzing climate data over a longer duration and across a larger geographical area.
Elevations of N-Terminal Mid-Fragment of Osteocalcin and Cystatin C Levels are Associated with Disorders of Glycolipid Metabolism and Abnormal Bone Metabolism in Patients with Type 2 Diabetes Mellitus Complicated with Osteoporosis
Authors: Guo Xiaofang , Shen Yun , Du Teng , He Yan , Lu Jie , Yang Qianhong 
Published: September 2024

Abstract
Type 2 diabetes mellitus (T2DM) patients always develop osteoporosis (OP). We examined correlations of N-terminal mid-fragment of osteocalcin (N-MID) and cystatin C (Cys C) levels with glycolipid metabolism, bone metabolism markers, and bone mineral density (BMD) in elderly T2DM-OP patients. Grouping was performed as per whether T2DM patients developed OP (OP group) or not (N-OP group). N-MID and Cys C were measured using enzyme-linked immunosorbent assay, with correlations with glycolipid metabolism, bone metabolism indicators, and BMD analyzed using Pearson’s correlation coefficient. Elderly T2DM-OP patients showed elevated disease duration, age, body mass index, glycated hemoglobin (HbA1c), Homer’s insulin resistance (HOMA-IR), total cholesterol (TC), beta-carboxy-terminal crosslinked telopeptide of type 1 collagen (β-CTX), tartrate-resistant acid phosphatase 5b (TRACP-5b), N-MID and Cys C levels, and reduced high-density lipoprotein cholesterol (HDL-C), bone alkaline phosphatase (B-ALP), aminoterminal propeptide of type I procollagen (PINP), carboxyterminal propeptide of type I procollagen (PICP), BMD, and calcium supplementation. N-MID and Cys C were positively correlated with HbA1c, HOMA-IR, TC, β-CTX, and TRACP-5b and negatively with HDL-C, B-ALP, PINP, PICP, and BMD in elderly T2DM-OP patients. Conclusively, the abnormal elevations of serum N-MID and Cys C were associated with glycolipid metabolism disorder, abnormal bone metabolism, and decreased BMD in elderly T2DM-OP patients.
Reinforcing simulated vital pulpotomized teeth as an alternate to invasive procedures: An in vitro study
Authors: Hiremath Hemalatha , Kharya Aastha , Shiringi Isha , Mishra Lavanshi 
Published: September 2024

Aim:
The aim is to compare and evaluate the fracture resistance of simulated pulpotomy-treated tooth reinforced with different reinforcing materials.

Methods:
Forty-five extracted human permanent central incisors were collected of approximately similar dimensions for this in vitro study. To simulate pulpotomy procedure, each tooth was sectioned through the middle third of the crown perpendicular to the long axis of the tooth, resulting in 6 mm cervicoincisal height (mimicking Ellis Class III fracture). Later, all the teeth were divided into four experimental (n = 10 each) and a control group (n = 5), according to the reinforcing materials used: Group A – microhybrid composite, Group B – stainless steel, Group C – polypropylene mesh, Group D – Rebilda post, and Group E – control group (natural tooth). The reinforcing materials were placed parallel to the long axis of the tooth, such that it lies 3 mm into the pulp chamber and 3 mm in the coronal portion, over which the composite restorations were placed. All the specimens were subjected to the universal testing machine for fracture resistance.

Results:
The data obtained were tabulated and statistically analyzed using Kruskal–Wallis and Tukey’s post hoc test. Stainless steel material exhibited statistically significant values among the experimental groups and the control group, whereas the values of polypropylene mesh, microhybrid composite, and Rebilda post were nonsignificant.

Conclusion:
Stainless steel wire can be used as a reinforcing material in pulpotomy treated tooth with extensive loss of tooth structure and could be an effective alternate for crown coverage.