bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analisis Jarak Titik Pengukuran Temperatur Tuang pada Kualitas Coran Aluminium Daur Ulang
Authors: Masnur Dedy , Rasyad Abdur , Nawangsari Putri , Abdurrahman Ridwan 
Published: June 2023

The melt exhibits non-uniform temperature in a crucible at the surface, middle, and bottom. Thus, selecting the proper measurement location is essential since it affects the casting quality. This study investigates the proper temperature measurement location of recycled aluminum cans in investment casting. The selection was made based on casted samples' tensile strength and porosity. The pattern was prepared using the polylactic acid mold, then coated by dipping it in ceramic slurry, and then dewaxed at 120ºC. The aluminum cans were heated up to 700ºC, and the temperature was measured at 50 mm from the crucible bottom. Finally, the melt was poured into a 100ºC ceramic shell. The processes were repeated with the measurement at 125 and 200 mm. The samples were characterized through tensile tests and porosity measurements. The results show that the optimum tensile strength (112.97 MPa) and minimum porosity (6.367%) were found in the 125 mm sample.
Abstrak
Temperatur logam cair tidak seragam di permukaan, tengah, dan dasar kowi. Pemilihan lokasi pengukuran yang tepat sangat penting karena mempengaruhi kualitas pengecoran. Studi ini menyelidiki titik pengukuran suhu kaleng aluminium daur ulang pada pengecoran investment. Pemilihan dilakukan berdasarkan kekuatan tarik dan porositas sampel yang dicor. Pola dibuat menggunakan cetakan using polylactic acid. Pola dilapisi dengan mencelupkannya ke dalam bubur keramik kemudian didewaxing pada temperatur 120ºC. Kaleng aluminium dipanaskan hingga 700ºC, suhu diukur pada 50 mm dari dasar kowi. Logam cair dituangkan ke dalam cetakan keramik saat temperaturnya 100ºC. Proses diulang dengan pengukuran untuk lokasi 125 dan 200 mm. Sampel dikarakterisasi melalui uji tarik dan pengukuran porositas. Hasil menunjukkan kekuatan tarik optimum (112,97 MPa) dan porositas minimum (6,367%) ditemukan pada sampel dengan lokasi pengukuran temperatur 125 mm dari dasar kowi.
New criteria for diagnosis of pulmonary arterial hypertension: pros and cons
Authors: Nikolaeva E. A. , Martynyuk T. V. 
Published: June 2023

The updated 2022 ESC/ERS Guidelines for the diagnosis and treatment of pulmonary hypertension approved new criteria for diagnosis of pulmonary hypertension (PH). In this review we present the data from modern studies proving the expediency of changing the threshold values of hemodynamic parameters measured by right heart catheterization (RHC) and echocardiography for the diagnosis of PH, the importance of introduction the definition «exercise PH» into clinical practice.New haemodynamic definition of pulmonary arterial hypertension: mean pulmonary arterial pressure (mPAP) > 20 mmHg, pulmonary arterial wedge pressure < 15 mmHg, pulmonary vascular resistance (PVR) > 2 Wood units, measured by RHC at rest. Diagnostic levels of systolic pulmonary arterial pressure and tricuspid regurgitation velocity measured by echocardiography stay the same, but it is important to combine them with a number of additional echocardiographic signs of PH.Promising direction for early diagnosis of PH is RHC during exercise in addition to studies at rest. Nowadays there are no generally accepted diagnostic criteria for exercise PH. Some studies propose the following threshold values of exercise PH: mPAP > 30 mmHg and PVR > 3 Wood units during exercise.
Positive vasoreactive response in patients with genetically confirmed pulmonary veno-occlusive disease: case report
Authors: Andreeva E. M. , Goncharova N. S. , Lapshin K. B. , Kostareva A. A. , Alekseeva D. V. , Berezina A. V. , Zlobina I. S. , Ryzhkov A. V. , Sokolnikova P. S. , Zaitsev V. V. , Moiseeva O. M. 
Published: June 2023

Pulmonary veno-occlusive disease (PVOD) is verified by identifying typical pathological changes in lungs or mutation in the EIF2AK4 gene. Clinical suspicion is based on combination of specific pulmonary pattern on computed tomography scan, hypoxemia with low diffusing lung capacity (DLCO) and inadequate response to specific therapy of pulmonary arterial hypertension (PAH). The rapid course of PVOD with high mortality determines the importance of early diagnosis and lung transplantation refferal.We present an unusual clinical case of 40-year-old woman with expected idiopathic PAH and extremely low DLCO with verified EIF2AK4 gene mutation, who demonstrated a positive vasoreactive test (VRT) and clinical response to calcium channel blockers therapy at the onset of the disease. The loss of positive VRT and subsequent PAH specific therapy escalation resulted in PVOD manifestation with severe desaturation, recurrent syncope and pulmonary edema. The combination of low DLCO and inadequate response to PAH therapy in idiopathic PAH patient should be of a paramount awareness of PVOD. Careful PAH therapy escalation with meticulous follow-up, pulmonary multispiral CT and genetic testing could improve early PVOD diagnostics and lung transplantation referral.
Keck Planet Imager and Characterizer Emission Spectroscopy of WASP-33b
Authors: Finnerty Luke , Schofield Tobias , Sappey Ben , Xuan Jerry W. , Ruffio Jean-Baptiste , Wang Jason J. , Delorme Jacques-Robert , Blake Geoffrey A. , Buzard Cam , Fitzgerald Michael P. , Baker Ashley , Bartos Randall , Bond Charlotte Z. , Calvin Benjamin , Cetre Sylvain , Doppmann Greg , Echeverri Daniel , Jovanovic Nemanja , Liberman Joshua , López Ronald A. , Martin Emily C. , Mawet Dimitri , Morris Evan , Pezzato Jacklyn , Phillips Caprice L. , Ragland Sam , Skemer Andrew , Venenciano Taylor , Wallace J. Kent , Wallack Nicole L. , Wang 王 Ji 吉 , Wizinowich Peter 
Published: June 2023

Abstract
We present Keck Planet Imager and Characterizer (KPIC) high-resolution (R ∼35,000) K-band thermal emission spectroscopy of the ultrahot Jupiter WASP-33b. The use of KPIC’s single-mode fibers greatly improves both blaze and line-spread stabilities relative to slit spectrographs, enhancing the cross-correlation detection strength. We retrieve the dayside emission spectrum with a nested-sampling pipeline, which fits for orbital parameters, the atmospheric pressure–temperature profile, and the molecular abundances. We strongly detect the thermally inverted dayside and measure mass-mixing ratios for CO (

logCO

MMR

=
−

1.1

−
0.6

+
0.4

), H2O (

logH

2

O

MMR

=
−

4.1

−
0.9

+
0.7

), and OH (

logOH

MMR

=
−

2.1

−
1.1

+
0.5

), suggesting near-complete dayside photodissociation of H2O. The retrieved abundances suggest a carbon- and possibly metal-enriched atmosphere, with a gas-phase C/O ratio of

0.8

−
0.2

+
0.1

, consistent with the accretion of high-metallicity gas near the CO2 snow line and post-disk migration or with accretion between the soot and H2O snow lines. We also find tentative evidence for 12CO/13CO ∼ 50, consistent with values expected in protoplanetary disks, as well as tentative evidence for a metal-enriched atmosphere (2–15 × solar). These observations demonstrate KPIC’s ability to characterize close-in planets and the utility of KPIC’s improved instrumental stability for cross-correlation techniques.
TOI-3984 A b and TOI-5293 A b: Two Temperate Gas Giants Transiting Mid-M Dwarfs in Wide Binary Systems
Authors: Cañas Caleb I. , Kanodia Shubham , Libby-Roberts Jessica , Lin Andrea S. J. , Schutte Maria , Powers Luke , Jones Sinclaire , Monson Andrew , Wang Songhu , Stefánsson Guđmundur , Cochran William D. , Robertson Paul , Mahadevan Suvrath , Kowalski Adam F. , Wisniewski John , Parker Brock A. , Larsen Alexander , Chapman Franklin A. L. , Kobulnicky Henry A. , Gupta Arvind F. , Everett Mark E. , Penprase Bryan Edward , Zeimann Gregory , Beard Corey , Bender Chad F. , Colón Knicole D. , Diddams Scott A. , Fredrick Connor , Halverson Samuel , Ninan Joe P. , Ramsey Lawrence W. , Roy Arpita , Schwab Christian 
Published: June 2023

Abstract
We confirm the planetary nature of two gas giants discovered by TESS to transit M dwarfs with stellar companions at wide separations. TOI-3984 A (J = 11.93) is an M4 dwarf hosting a short-period (4.353326 ± 0.000005 days) gas giant (M

p
= 0.14 ± 0.03 M
J and R

p
= 0.71 ± 0.02 R
J) with a wide-separation white dwarf companion. TOI-5293 A (J = 12.47) is an M3 dwarf hosting a short-period (2.930289 ± 0.000004 days) gas giant (M

p
= 0.54 ± 0.07 M
J and R

p
= 1.06 ± 0.04 R
J) with a wide-separation M dwarf companion. We characterize both systems using a combination of ground- and space-based photometry, speckle imaging, and high-precision radial velocities from the Habitable-zone Planet Finder and NEID spectrographs. TOI-3984 A b (T
eq = 563 ± 15 K and

TSM
=

138

−
27

+
29

) and TOI-5293 A b (

T

eq

=

675

−
30

+
42

K and TSM = 92 ± 14) are two of the coolest gas giants among the population of hot Jupiter–sized gas planets orbiting M dwarfs and are favorable targets for atmospheric characterization of temperate gas giants and 3D obliquity measurements to probe system architecture and migration scenarios.
Early Planet Formation in Embedded Disks (eDisk). III. A First High-resolution View of Submillimeter Continuum and Molecular Line Emission toward the Class 0 Protostar L1527 IRS
Authors: van ’t Hoff Merel L. R. , Tobin John J. , Li Zhi-Yun , Ohashi Nagayoshi , Jørgensen Jes K. , Lin Zhe-Yu Daniel , Aikawa Yuri , Aso Yusuke , de Gregorio-Monsalvo Itziar , Gavino Sacha , Han Ilseung , Koch Patrick M. , Kwon Woojin , Lee Chang Won , Lee Jeong-Eun , Looney Leslie W. , Narayanan Suchitra , Plunkett Adele , (Insa Choi) Jinshi Sai , Santamaría-Miranda Alejandro , Sharma Rajeeb , Sheehan Patrick D. , Takakuwa Shigehisa , Thieme Travis J. , Williams Jonathan P. , Lai Shih-Ping , Phuong Nguyen Thi , Yen Hsi-Wei 
Published: June 2023

Abstract
Studying the physical and chemical conditions of young embedded disks is crucial to constrain the initial conditions for planet formation. Here we present Atacama Large Millimeter/submillimeter Array observations of dust continuum at ∼0.″06 (8 au) resolution and molecular line emission at ∼0.″17 (24 au) resolution toward the Class 0 protostar L1527 IRS from the Large Program eDisk (Early Planet Formation in Embedded Disks). The continuum emission is smooth without substructures but asymmetric along both the major and minor axes of the disk as previously observed. The detected lines of 12CO, 13CO, C18O, H2CO, c-C3H2, SO, SiO, and DCN trace different components of the protostellar system, with a disk wind potentially visible in 12CO. The 13CO brightness temperature and the H2CO line ratio confirm that the disk is too warm for CO freezeout, with the snowline located at ∼350 au in the envelope. Both molecules show potential evidence of a temperature increase around the disk–envelope interface. SO seems to originate predominantly in UV-irradiated regions such as the disk surface and the outflow cavity walls rather than at the disk–envelope interface as previously suggested. Finally, the continuum asymmetry along the minor axis is consistent with the inclination derived from the large-scale (100″ or 14,000 au) outflow, but opposite to that based on the molecular jet and envelope emission, suggesting a misalignment in the system. Overall, these results highlight the importance of observing multiple molecular species in multiple transitions to characterize the physical and chemical environment of young disks.
Identification of Extended Emission Gamma-Ray Burst Candidates Using Machine Learning
Authors: Garcia-Cifuentes K. , Becerra R. L. , De Colle F. , Cabrera J. I. , Del Burgo C. 
Published: June 2023

Abstract
Gamma-ray bursts (GRBs) have been classified traditionally based on their duration. The increasing number of extended emission (EE) GRBs, lasting typically more than 2s but with properties similar to those of short GRBs, challenges the traditional classification criteria. In this work, we use the t-distributed stochastic neighbor embedding (t-SNE), a machine-learning technique, to classify GRBs. We present the results for GRBs observed until 2022 July by the Swift/BAT (Burst Alert Telescope) instrument in all its energy bands. We show the effects of varying the learning rate and perplexity parameters as well as the benefit of preprocessing the data by a nonparametric noise-reduction technique. Consistently with previous works, we show that the t-SNE method separates GRBs into two subgroups. We also show that EE GRBs reported by various authors under different criteria tend to cluster in a few regions of our t-SNE maps and identify seven new EE GRB candidates by using the gamma-ray data provided by the automatic pipeline of Swift/BAT and the proximity with previously identified EE GRBs.
Neutron Star Phase Transition as the Origin for the Fast Radio Bursts and Soft Gamma-Ray Repeaters of SGR J1935 + 2154
Authors: Shen Jun-Yi , Zou Yuan-Chuan , Yang Shu-Hua , Zheng Xiao-Ping , Wang Kai 
Published: June 2023

Abstract
Magnetars are believed to be neutron stars (NSs) with strong magnetic fields. X-ray flares and fast radio bursts (FRBs) have been observed from the magnetar (soft gamma-ray repeater, SGR J1935+2154). We propose that the phase transition of the NS can power the FRBs and SGRs. Based on the equation of state provided by the MIT bag model and the mean field approximation, we solve the Tolman–Oppenheimer–Volkoff equations to get the NS structure. With the spin-down of the NS, the hadronic shell gradually transfers to the quark shell. The gravitational potential energy released by one time of the phase transition can be achieved. The released energy, time interval between two successive phase transitions, and glitch are all consistent with the observations of the FRBs and the X-ray flares from SGR J1935 + 2154. We conclude that the phase transition of an NS is a plausible mechanism to power the SGRs as well as the repeating FRBs.
Delensing of Cosmic Microwave Background Polarization with Machine Learning
Authors: Yan Ye-Peng , Wang Guo-Jian , Li Si-Yu , Xia Jun-Qing 
Published: June 2023

Abstract
Primordial B-mode detection is one of the main goals of next-generation cosmic microwave background (CMB) experiments. Primordial B-modes are a unique signature of primordial gravitational waves (PGWs). However, the gravitational interaction of CMB photons with large-scale structures will distort the primordial E modes, adding a lensing B-mode component to the primordial B-mode signal. Removing the lensing effect (“delensing”) from observed CMB polarization maps will be necessary to improve the constraint of PGWs and obtain a primordial E-mode signal. Here, we introduce a deep convolutional neural network model named multi-input multi-output U-net (MIMO-UNet) to perform CMB delensing. The networks are trained on simulated CMB maps with size 20° × 20°. We first use MIMO-UNet to reconstruct the unlensing CMB polarization (Q and U) maps from observed CMB maps. The recovered E-mode power spectrum exhibits excellent agreement with the primordial EE power spectrum. The recovery of the primordial B-mode power spectrum for noise levels of 0, 1, and 2 μK-arcmin is greater than 98% at the angular scale of ℓ < 150. We additionally reconstruct the lensing B map from observed CMB maps. The recovery of the lensing B-mode power spectrum is greater than roughly 99% at the scales of ℓ > 200. We delens the observed B-mode power spectrum by subtracting the reconstructed lensing B-mode spectrum. The recovery of tensor B-mode power spectrum for noise levels of 0, 1, and 2 μK-arcmin is greater than 98% at the angular scales of ℓ < 120. Even at ℓ = 160, the recovery of tensor B-mode power spectrum is still around 71%.
Mechanical Modification of Chondrule Fine-grained Rims by Dusty Nebular Shocks
Authors: Carballido Augusto , Matthews Lorin S. , Hanna Romy D. , Hyde Truell W. 
Published: June 2023

Abstract
The mechanical processes that convert an initially fluffy chondrule fine-grained rim (FGR) into a more compact structure remain poorly characterized. Given the presence of shocks in protoplanetary disks, we use numerical simulations to test the hypothesis that dust-laden shocks in the solar nebula contributed to FGR modification. We use the iSALE2D shock physics code to model the collision of dusty nebular shock fronts (which we term “dust clouds”) into chondrule surfaces that host a porous FGR. In our simulations, dust particles are modeled as dunite disks. The dust radii follow the Mathis–Rumpl–Nordsieck distribution of interstellar grains. Chondrules are modeled as rectangular dunite slabs. We vary the impact speed v
imp, the fractional abundance f
cloud of dust grains in the impacting shock, and the fractional abundance f
FGR of dust grains in the pre-existing FGR. We thus compute dust temperatures and pressures resulting from the collisions, as well as the net mass accretion of dust by the FGRs. Dust temperatures increase upon impact, depending on the kinetic energy of the dust cloud and on f
FGR. Dust rims with a higher f
FGR heat up more than those with a lower f
FGR, with possibly important implications for the composition and structure of FGRs. Maximum impact pressures increase with f
cloud. Fine-grained rims can experience mass gain from the impacting cloud, but in some instances, mass is lost from the rim. We find qualitative similarities in the topography of the FGR–chondrule interface between our simulations and petrographic analyses of the Paris CM chondrite by other authors.
Taxonomic notes on Stemmops O. Pickard-Cambridge, 1894 (Araneae, Theridiidae) of China
Authors: Li Fengyuan , Lin Yejie , Gao Fan , Yao Yanbin , Li Shuqiang 
Published: June 2023

The theridiid spider genus Stemmops O. Pickard-Cambridge, 1894 includes 27 extant species and is distributed in America (23 spp.) and Asia (4 spp.). Three species, S. forcipus Zhu, 1998 (♂♀), S. nigrabdomenus Zhu, 1998 (♂) and S. nipponicus Yaginuma, 1969 (♂♀), are currently known from China.
Two new species of Stemmops are described from China: S. atratus sp. n. (♀, Jiangsu, Zhejiang) and S. lini sp. n. (♂♀, Fujian, Zhejiang). In addition, the previously unknown female of S. nigrabdomenus Zhu, 1998 is described. Photos and morphological descriptions are provided.
Smartphone-Based Wearable Gait Monitoring System Using Wireless Inertial Sensors
Authors: Astudillo Alejandro , Avella-Rodríguez Edna , Arango-Hoyos Gloria , Ramirez-Scarpetta Jose , Rosero Esteban 
Published: June 2023

This paper presents a wearable virtual reality system with a wireless network of inertial sensors for lower limb monitoring. The system comprises seven sensor nodes sending data wirelessly to a master node. The information is then collected, organized, and sent to a screening device via a serial interface. An application executed either on a smartphone or a personal computer features an avatar which represents the received data and mimics the sensed movements of the patient, providing online feedback during and after the execution of a therapy. The data resulting from the therapy execution can be uploaded to a web server to facilitate the assessment and decision-making by health professionals. A pendulum featuring a rotary optical encoder is used for sensor functional behavior validation. In addition, the orientation angles measured by the proposed system are compared with respect to measurements from the motion analysis software Kinovea. The delay between the patient's body movement and the avatar is 33 ms, which is acceptable for visual feedback. This system is portable, inexpensive and enables a patient to complete physical therapy sessions at home or anywhere, with the advantage of enabling visual feedback through an avatar during rehabilitation therapy and allowing the reproduction of a therapy session for further analysis.
Quel(s) rapport(s) au marché du travail des élèves inscrits en Certificat d’Aptitude Professionnelle (CAP) ?
Authors: Bonnard Claire 
Published: June 2023

Si des travaux ont montré une diversité de rapports à l’école et aux savoirs des élèves de l’enseignement professionnel, peu d’entre eux ont cherché à étudier le rapport au marché du travail de ces élèves. Cet article propose d’analyser la relation entre rapport à l'école et au marché du travail des élèves inscrits en CAP. Pour cela, une enquête a été réalisée portant sur 750 élèves inscrits en CAP sous voie scolaire et en apprentissage. Une typologie permet d’identifier quatre « profils-types » d’élèves qui se distinguent selon leur rapport à l’école et au marché du travail. Les résultats soulignent qu’un rapport plutôt positif ou négatif à l’école peut renvoyer à des finalités différentes et demande à être appréhendé selon la valeur accordée au diplôme et les opportunités perçues par l’élève sur le marché du travail. Ces différents rapports vont se construire de manière différenciée selon le genre, le statut migratoire, le parcours d’orientation ainsi que le contexte social et scolaire de l’élève.
Impact of an Assessment-Based Training Module on Communication Skills in Phase I Indian Medical Undergraduates
Authors: Aggarwal Prerana , Rawekar Alka , Dey Saikat Kumar , Roy Rajarshi 
Published: June 2023

Introduction:
Good communication skills (CSs) are not only the crux of a good doctor–patient relationship but also the foundation over which any human relationship is based. The aim of this study was to assess the impact of training on CS in Phase I MBBS students in a Government Medical College in West Bengal, India.

Materials and Methods:
One hundred and eighty-four Phase I medical students were trained on how to communicate properly with their peers, seniors, teachers, college authorities, department staff, patient relatives, and other health professionals. Each participant underwent a set of three assessments (presession, postsession, and late postsession) for both knowledge and skills in CS. After postsession assessment, feedback by the faculties and peers was provided and reflections were obtained from the participants. A prevalidated questionnaire and Gap-Kalamazoo CS Assessment Form (with some modification) were used for knowledge and skill's assessment, respectively. At the end of the module, feedback was collected from the participants. Data were tabulated and results were compared and interpreted.

Results:
Mean score and standard deviation for knowledge assessment were 5.29 ± 1.35, 9 ± 1.20 and 8.55 ± 0.97 in T1, T2, and T3 and for skills' score were 17.78 ± 4.89, 26.32 ± 5.04 and 30.77 ± 3.66 in SA1, SA2, and SA3, respectively. Most participants showed improvement in T2 with mean improvement score (T2–T1) of 79.57 ± 47.25 and mean retention score (T3–T1) of 71.9 ± 47.84. About 52% of participants showed deterioration in T3 with late deterioration score (T3–T2) of − 4.06 ± 11.42. 33% showed no change in knowledge, i.e., they retained their improvements, whereas 15% showed further improvement. Fifty-two percent of participants showed skills' improvement by scores of 7–12, 43% showed retention by 13–18, and late deterioration was shown by 82%, their scores dropped by 0–6.

Conclusion:
The training module was successfully implemented, and participants appreciated this type of participant centric assessment-based teaching learning module. They learned about the effective ways of communication in a fun manner and were determined to apply all that they have learned.