bluuebunny/crossref_metadata_2025_split huggingface dataset:
PENGARUH GREEN PRODUCT DAN CUSTOMER PERCEIVED VALUE TERHADAP PURCHASE INTENTION JAM TANGAN KAYU SERIBU SATOE
Authors: Lufie Muhammad aluf ma' , Kaihatu Thomas stefanus , Effendi Laij victor 
Published: April 2022

This research is done to find out The Effect of Green Products and Customer Perceived Value on Purchase Intention of Seribu Satoe Wooden Watch, this research uses quantitative approach with population that is taken from 133 respondents with purposive sampling technique with criteria of Seribu Satoe prospective consumers who have interest in Seribu Satoe wooden watch and domiciled in Surabaya, Gresik.
This research uses multiple linear regression analysis method that is processed through SPSS. The data collection method is done by distributing online questionnaires through google form. The results of this research indicate that green products, customer perceived value have significant effect on purchase intention with significant value of t test result of 0.000 green product variable, and customer perceived value of 0.000, all significant value ​​are the rate of <0.05. Therefore, it can be concluded that green product variable and customer perceived value affect partially on purchase intention variable
Bayesian Inference in Single-line Spectroscopic Binaries with a Visual Orbit
Authors: Videla Miguel , Mendez Rene A. , Clavería Rubén M. , Silva Jorge F. , Orchard Marcos E. 
Published: April 2022

Abstract
We present a Bayesian inference methodology for the estimation of orbital parameters on single-line spectroscopic binaries with astrometric data, based on the No-U-Turn sampler Markov chain Monte Carlo algorithm. Our approach is designed to provide a precise and efficient estimation of the joint posterior distribution of the orbital parameters in the presence of partial and heterogeneous observations. This scheme allows us to directly incorporate prior information about the system—in the form of a trigonometric parallax, and an estimation of the mass of the primary component from its spectral type—to constrain the range of solutions, and to estimate orbital parameters that cannot be usually determined (e.g., the individual component masses), due to the lack of observations or imprecise measurements. Our methodology is tested by analyzing the posterior distributions of well-studied double-line spectroscopic binaries treated as single-line binaries by omitting the radial velocity data of the secondary object. Our results show that the system’s mass ratio can be estimated with an uncertainty smaller than 10% using our approach. As a proof of concept, the proposed methodology is applied to 12 single-line spectroscopic binaries with astrometric data that lacked a joint astrometric–spectroscopic solution, for which we provide full orbital elements. Our sample-based methodology allows us also to study the impact of different posterior distributions in the corresponding observations space. This novel analysis provides a better understanding of the effect of the different sources of information on the shape and uncertainty in the orbit and radial velocity curve.
Search for Stellar Flybys in the Sco-Cen OB Association with the Gaia DR2
Authors: Ma 马 Yilun 逸伦 , De Rosa Robert J. , Kalas Paul 
Published: April 2022

Abstract
High-contrast imaging studies of debris disks have revealed a significant diversity in their morphologies, including large-scale asymmetries. Theories involving stellar flybys, an external source of gravitational disturbance, have offered a plausible explanation for the origin of these morphological variations. Our study is an experiment to gain empirical evidence that has been lacking from such theories. We explore this paradigm by using astrometric and radial velocity measurements from the Gaia DR2 and ground-based observations to trace the trajectories of 625 stars in the Sco-Cen OB association from 5 Myr in the past to 2 Myr in the future. We identified 119 stars that had at least one past flyby event occurring within one Hill radius, and 23 of these experienced flybys within 0.5 Hill radii. We found no evidence of a significant correlation between the presence of flyby events and infrared excess detections, although the sample is not uniformly sensitive to infrared excess emission. Ten stars that had past flyby events host resolved circumstellar disks that appear relatively symmetric in the existing data except for the circumbinary disk surrounding HD 106906. We determined the trajectory and relative velocity of each of these flyby events and compared these to the geometry of the spatially resolved disks. Future work is needed to measure the kinematics of lower-mass stars and to improve sensitivity to circumstellar disks for the entire sample.
Confirmation of the Long-period Planet Orbiting Gliese 411 and the Detection of a New Planet Candidate
Authors: Hurt Spencer A. , Fulton Benjamin , Isaacson Howard , Rosenthal Lee J. , Howard Andrew W. , Weiss Lauren M. , Petigura Erik A. 
Published: April 2022

Abstract
We perform a detailed characterization of the planetary system orbiting the bright, nearby M dwarf Gliese 411 using radial velocities gathered by APF, HIRES, SOPHIE, and CARMENES. We confirm the presence of a signal with a period near 2900 days that has been disputed as either a planet or a long-period stellar magnetic cycle. An analysis of activity metrics including the H
α
and

log
′

R

HK

indices supports the interpretation that the signal corresponds to a Neptune-like planet, GJ 411 c. An additional signal near 215 days was previously dismissed as an instrumental systematic, but we find that a planetary origin cannot be ruled out. With a semimajor axis of 0.5142 ± 0.0042 au, this candidate’s orbit falls between those of its companions and is located beyond the outer edge of the system’s habitable zone (determined using the moist greenhouse and maximum greenhouse limits in Kopparapu et al. 2013). It has a minimum mass of 3.89 ± 0.84 M
⊕, giving a radial-velocity amplitude of 0.81 ± 0.18 m s−1. If confirmed, this would be one of the lowest-amplitude planet detections from any of these four instruments. Our analysis of the joint radial-velocity data set also provides tighter constraints on the orbital parameters for the previously known planets. Photometric data from TESS do not show any signs of a transit event. However, the outermost planet and candidate are prime targets for future direct imaging missions, and GJ 411 c may be detectable via astrometry.
Stable Hydrogen-burning Limits in Rapidly Rotating Very Low Mass Objects
Authors: Chowdhury Shaswata , Banerjee Pritam , Garain Debojyoti , Sarkar Tapobrata 
Published: April 2022

Abstract
We present novel effects of uniform rapid stellar rotation on the minimum mass of stable hydrogen burning in very low mass stars, using an analytic model and relaxing the assumption of spherical symmetry. We obtain an analytic formula for the minimum mass of hydrogen burning as a function of the angular speed of stellar rotation. Further, we show the existence of a maximum mass of stable hydrogen burning in such stars, which is purely an artifact of rapid rotation. The existence of this extremum in mass results in a minimum admissible value of the stellar rotation period of ∼22 minutes, below which a very low mass object does not reach the main sequence, within the ambit of our model. For a given angular speed, we predict a mass range beyond which such an object will not evolve into a main-sequence star.
Properties of High-redshift Gamma-Ray Bursts
Authors: Fryer Chris L. , Lien Amy Y. , Fruchter Andrew , Ghirlanda Giancarlo , Hartmann Dieter , Salvaterra Ruben , Upton Sanderbeck Phoebe R. , Johnson Jarrett L. 
Published: April 2022

Abstract
The immense power of gamma-ray bursts (GRBs) makes them ideal probes of the early universe. By using absorption lines in the afterglows of high-redshift GRBs, astronomers can study the evolution of metals in the early universe. With an understanding of the nature of GRB progenitors, the rate and properties of GRBs observed at high redshift can probe the star formation history and the initial mass function of stars at high redshift. This paper presents a detailed study of the dependence on metallicity and mass of the properties of long-duration GRBs under the black hole accretion disk paradigm to predict the evolution of these properties with redshift. These models are calibrated on the current GRB observations and then used to make predictions for new observations and new missions (e.g., the proposed Gamow mission) studying high-redshift GRBs.
Constraints on r-modes and Mountains on Millisecond Neutron Stars in Binary Systems
Authors: Covas P. B. , Papa M. A. , Prix R. , Owen B. J. 
Published: April 2022

Abstract
Continuous gravitational waves are nearly monochromatic signals emitted by asymmetries in rotating neutron stars. These signals have not yet been detected. Deep all-sky searches for continuous gravitational waves from isolated neutron stars require significant computational expense. Deep searches for neutron stars in binary systems are even more expensive, but these targets are potentially more promising emitters, especially in the hundreds of Hertz region, where ground-based gravitational-wave detectors are most sensitive. We present here an all-sky search for continuous signals with frequency between 300 and 500 Hz, from neutron stars in binary systems with orbital periods between 15 and 60 days and projected semimajor axes between 10 and 40 lt-s. This is the only binary search on Advanced LIGO data that probes this frequency range. Compared to previous results, our search is over an order of magnitude more sensitive. We do not detect any signals, but our results exclude plausible and unexplored neutron star configurations, for example, neutron stars with relative deformations greater than 3 × 10−6 within 1 kpc from Earth and r-mode emission at the level of α ∼ a few 10−4 within the same distance.
Spitzer Dayside Emission of WASP-34b
Authors: Challener Ryan C. , Harrington Joseph , Cubillos Patricio E. , Blecic Jasmina , Smalley Barry 
Published: April 2022

Abstract
We analyzed two eclipse observations of the low-density transiting, likely grazing, exoplanet WASP-34b with the Spitzer Space Telescope’s InfraRed Array Camera using two techniques to correct for intrapixel sensitivity variation: Pixel-Level Decorrelation and BiLinearly Interpolated Subpixel Sensitivity. When jointly fitting both light curves, timing results are consistent within 0.7σ between the two models and eclipse depths are consistent within 1.1σ, where the difference is due to photometry methods, not the models themselves. By combining published radial velocity data, amateur and professional transit observations, and our eclipse timings, we improved on measurements of orbital parameters and found an eccentricity consistent with zero (0.0). Atmospheric retrieval, using our Bayesian Atmospheric Radiative Transfer code, shows that the planetary spectrum most resembles a blackbody, with no constraint on molecular abundances or vertical temperature variation. WASP-34b is redder than other warm Jupiters with a similar temperature, hinting at unique chemistry, although further observations are necessary to confirm this.
Soulèvements populaires
Authors: Sastramidjaja Yatun , Polet François 
Published: April 2022

Dans leur amplitude comme dans leur forme, les manifestations indonésiennes de 2019 contre plusieurs projets de loi jugés antidémocratiques traduisent l’émergence d’une nouvelle génération militante, dont la socialisation politique, les modes d’organisation et les registres d’expression sont tributaires des espaces numériques contemporains. La mobilisation sur la toile s’articule, davantage qu’elle ne se substitue, aux manifestations de rue.
Pathophysiology and rehabilitation management of exercise intolerance in COVID-19 patients
Authors: Nazir Arnengsih , Hasri Indra Putera 
Published: April 2022

OBJECTIVE:
This review aimed to explore the pathophysiology and rehabilitation management of exercise intolerance in COVID-19 patients.

METHODS:
We reviewed articles published in 2019-2021 using PubMed, Google Scholar, and CINAHL databases as an electronic database. Data obtained were pathophysiology and rehabilitation management of exercise intolerance in COVID-19 survivors. Types of the article were original articles and systematic or narrative reviews, both published and preprint articles. Articles that were written in English and freely accessible in pdf or HTML format were included.

RESULTS:
There were 28 articles eligible for this review. Pathophysiology, rehabilitation management, and both pathophysiology and rehabilitation management were explained in 7, 24, and 4 articles, consecutively.

DISCUSSION:
Exercise intolerance is caused by some pathological processes in the respiratory, cardiovascular, and musculoskeletal systems as a result of systemic inflammation. Fatigue and shortness of breath during the activity were the most common symptom in the early phase of COVID-19 and persisted until the follow-up phase. Hospital admission, especially prolonged use of ventilators and immobilization worsen functional impairment resulting in persistent symptoms. Rehabilitation management begins with a functional assessment consisting of symptom assessment and physical examination of the body systems affected. The goals of rehabilitation management are to increase functional capacity, reduce symptoms, improve the ability to perform daily activities, facilitate social reintegration, and improve quality of life. Exercise is an effective intervention to reach these goals. Several studies recommend breathing, and aerobic exercises, as well as resistance exercises for peripheral and respiratory muscles, to improve symptoms and increase functional capacity.
Obstructive sleep apnea in patients with severe asthma
Authors: Al-Lawati Fatema , Al-Mubaihsi Saif M. , Jayakrishnan B. , Rizvi Sayed , Al-Abri Mohammed A. 
Published: April 2022

INTRODUCTION:
Asthma and obstructive sleep apnea (OSA) are common respiratory disorders that can coexist and cause sleep disturbances. The strength of this association and the impact of OSA on asthma severity and control remain unclear. The study aims to estimate the prevalence of OSA in patients with severe asthma in Oman and to examine whether the severity of OSA contributed to the level of asthma control.

METHODS:
Adult patients with confirmed diagnosis of severe asthma who attended the respiratory clinic in a tertiary hospital in Oman over a period of 19 months were enrolled in the study. Eligible participants were screened by asthma control test (ACT) and Berlin questionnaire (BQ). Patients with high risk for OSA were subjected further to level 3 sleep study. The prevalence of OSA in patients with severe asthma and the associations between the severity of OSA and asthma control were calculated.

RESULTS:
We identified 312 adult asthma patients on Global Initiative for Asthma step 4 or 5 management out of 550 who were screened. The mean age of the study population was 56.59 ± 12.40 years and the mean body mass index (BMI) 40.30 ± 12.24 kg/m2. The prevalence of OSA in asthma patients with severe asthma was found to be 32.4%. Out of the 138 well-controlled asthma patients (ACT ≥20), 35 had high risk of OSA based on BQ, and 32 were confirmed to have OSA (23%). Of the 174 uncontrolled patients, 80 patients had high risk of OSA and 69 patients were confirmed to have OSA (39.65%). Severe OSA was seen in 63.8% and 9.4% in uncontrolled and controlled asthma patients, respectively (P = 0.002). The median respiratory event index in the uncontrolled group was 43, and it was significantly higher than 12.5 in the controlled group (P < 0.001).

CONCLUSIONS:
The prevalence of OSA was high (32.37%) in patients with severe asthma. Uncontrolled severe asthma was significantly associated with severe OSA.
Evaluation of risk stratification and adherence to venous thromboembolism prophylaxis among hospitalized obstetric women
Authors: Mattar Ghadeer , Al Sahafi Nada , Al Hazmi Lujain , Al Hazmi Nadia , Abozeid Hanaa Elsayed , Sultan Intessar 
Published: April 2022

BACKGROUND:
Venous thromboembolism (VTE) is associated with substantial mortality as well as morbidity and is largely preventable among hospitalized obstetric women. However, thromboprophylaxis is underutilized in most hospitalized patients.

OBJECTIVES:
To evaluate VTE risk and adherence to local thromboprophylaxis protocol among hospitalized pre- and postnatal women.

METHODS:
This retrospective study was conducted at East Jeddah Hospital, Jeddah, Saudi Arabia, in 2020. The electronic record database of the hospitalized pregnant Saudi women during the years 2018 and 2019 was reviewed. Based on the local hospital protocol, the risk stratification was reassessed by researchers, and the hospital adherence to the prophylaxis was reviewed separately for antenatal and postnatal women.

RESULTS:
One thousand and ninety-five electronic records (539 antenatal and 556 postnatal) were reviewed. The postnatal group showed a significantly higher risk compared with an antenatal group (62.2% vs. 11.7%) (P = 0.000). There was a highly significant difference between risk categories assessment by the physicians and the researchers in both groups (P = 0.000). Thromboprophylaxis was overutilized in the low risk (5% heparin and 41.4% heparin and mechanical devices for antenatal and 17.08% heparin and 6.1% heparin and a mechanical device for the postnatal group) and underutilized in intermediate groups (50% no prophylaxis in antenatal and 51.5% mechanical devices in the postnatal group). There was less adherence to documentation in postnatal as compared to antenatal group (83.6% vs. 95%, P = 0.000) for risk documentation and 85.3% versus 91.5% for physician signature (P = 0.001). Thromboprophylaxis was ordered for 21.3% of antenatal (12.2 heparin, 3.5% mechanical, and 5.6% both) and 23.7% of postnatal patients (16.5 heparin, 2% mechanical, and 5.2% both). There were no reported VTE events or bleeding complications.

CONCLUSION:
There was a considerable VTE risk among hospitalized obstetric patients which peaked during the postnatal period. Physicians showed good compliance to local VTE protocol with no reported VTE events or drug-induced bleeding. However, the implementation of prophylaxis is associated with both under and overutilization. There is a need for increasing the physicians’ awareness of optimizing VTE risk assessment and documentation for hospitalized obstetric patients.
Mucocele of Appendix
Authors: Hassan Yaqoob , Wani Ishfaq Ahmad , Farooq Shiekh Imran 
Published: April 2022

Background:
Appendiceal mucocele is a rare surgical emergency caused by intraluminal accumulation of mucoid material due to obstruction. Proper diagnosis and adequate surgical management are paramount to prevent the complications. Objectives: The aim of this study is to report on our management of appendiceal mucocele and highlighting the importance of proper pre-operative workup to reach a definitive diagnosis as a possible means of avoiding the associated grave complications.

Materials and Methods:
The patients of mucocele of appendix encountered over the period of five years in our department were managed and reported.

Results:
We present a series of three cases of appendiceal mucocele and included two females and one male patient with a median age of 41.67 years. Clinical examination, biochemical parameters, and imaging studies showed features of acute appendicitis. A 65-year-old female patient, presented with signs and symptoms of acute appendicitis was admitted and on exploratory laparotomy, showed inflamed globular cystic mass of appendix 10 cm × 6 cm × 4 cm, with dilated base and subjected to right hemicolectomy. A 35-year-old male patient was operated for appendicitis and diagnosed with mucocele appendix of 6 cm × 1 cm × 1 cm. Another patient, 25-year-old female was subjected to diagnostic laparoscopy in view of recurrent pain in right iliac fossa. A diagnosis of mucocele of appendix was made and removed via endobag.

Conclusion:
Appendiceal mucocele with acute presentation remains a rare diagnosis. Proper pre-operative workup to reach a definitive diagnosis is imperative for adequate surgical management to prevent the associated post-operative grave complications. Pre-operative diagnosis helps in decision making for the selection of the appropriate surgical procedure and alarms the operating surgeon for meticulous surgical dissection, adequate removal of mesoappendix with utmost cautious to prevent the mucus spillage into the peritoneal cavity.
Comparative Evaluation of Cell Block Histopathology and Conventional Smear Cytology in FNAC of Clinically Suspected Cervical Lymph Node Malignancy
Authors: Bhunia Chanchal , Chatterjee Sankha , Kundu Dipankar , Bhattacherjee Sharmistha 
Published: April 2022

Introduction:
Cervical lymphadenopathy is a common clinical presentation in various departments of clinical practice. Fine needle aspiration cytology (FNAC) is usually the first choice to diagnose superficial cervical lymphadenopathy. However, FNAC sometimes does not yield information for precise diagnosis, and the risk of false-negative and indeterminate diagnosis is always present. In order to overcome these problems, cell block technique has been resorted to make the best use of the available material.

Objective:
The aim of this article is to evaluate whether there are any diagnostic advantages of cell block histopathology over conventional smear cytology by corroborating with excisional biopsy.

Materials and Methods:
A descriptive study with cross-sectional design was performed among 106 cases with clinical suspicion of malignancy. FNAC was performed without anesthesia, and the aspirated material was flushed on slides and then fixed immediately. The remaining materials were processed into cell blocks followed by HE staining. The data obtained were analyzed using SPSS (IBM Statistics, Version 20.0, SPSS, Chicago, IL, USA) statistical software. Ethical approval was obtained from the Institutional Ethics Committee, and informed consent was taken from all the participants before the procedure.

Results:
Out of the 106 cases, 101 (95.28%) cases were diagnosed as malignant lesions and 5 (4.72%) cases diagnosed as non-malignant lesions. The majority of the patients were in the 40–59 year age group and were males. The sensitivity of cytology to provide specific diagnosis in malignant lesions was 90.57%, whereas those of cell block histopathology and cell block histopathology with cytology were 94.34% and 98.11%, respectively.

Conclusion:
Cell block as an adjunct to FNAC can be a useful diagnostic technique in cervical lymphadenopathy. Compared with FNAC, it gives more accurate diagnostic architecture and apparent histopathological features.