bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analisa Kerusakan Pompa OCCWP Pada Pembangkit Listrik Tenaga Uap 2 x 115 MW
Authors: Sianturi Tambos , Hutauruk Sindak , Sihombing Fiktor 
Published: October 2021

The use of pumps in the industrial world, especially in power plants, cannot be separated from problems that arise that can cause losses. The research was conducted at PLTU 2 X 115 MW by taking a case that had happened to the pump, namely the Open Cycle Cooling Water Pump 2A. The analytical method used in this final project is the vibration analysis method, namely by reading the spectrum of the data retrieval results so that it can be seen what happens to the equipment that experiences an increase in vibration.
Bearing damage can be seen in the spectrum image of the measurement results, where the appearance of the spectrum in the high frequency range is an indication of bearing damage. And the high vibration which reaches 13.06 mm/s and is already in the danger category based on ISO 10816-3.
PENGARUH MEDIA PEMBELAJARAN FLASHCARD TERHADAP KEMAMPUAN MEMBACA PERMULAAN PADA ANAK KELAS 1 SD NEGERI 01 SITIUNG KABUPATEN DHARMASRAYA
Authors: Lestari Endang Dwi 
Published: October 2021

Berdasarkan latar belakang pada penelitian ini terdapat masalah terhadap kemampuan membaca permulaan siswa yang masih mengeja huruf dan belum digunakannya media pembelajaran yang bervariasi. Penelitian ini bertujuan untuk mengetahui tingkat pengaruh yang signifiksn dalam penggunaan media flash card terhadap kemampuan membaca permulaan pada anak kelas I SD Negeri 01 Sitiung. Penelitian ini menggunakan Pre-Experimental Desain. Desain penelitian Pre-Experimental yang di gunakan adalah One-Group Pretest-Posttest Desig. Pengumpulan data dilakukan dengan memberikan pretest dan posttest, pengumpulan data di kelas I SD Negeri 01 Sitiung hasil data pretest dan posttest tersebut di uji dengan menggunakan paired sample t-test pada SPSS20. Hasil penelitian menunjukkan bahwa penggunaan media flash card berpengaruh terhadap kemampuan membaca permulaan. Dimana nilai rata-rata pretes yaitu 65,6 sedangkan nilai rata-rata posttest yaitu 80,5. Serta uji T-tes diperoleh kedua data tingkat signifikannya lebih kecil dari 0,05 hasil perhitungan diperoleh sign < α (0,000 < 0,05). Hal ini menunjukan bahwa ada pengaruh penggunaan media flash card terhadap kemampuan membaca permulaan

Kata kunci : media flash card, membaca permulaan, pembelajaran Bahasa Indonesia
Strategi Guru Kelas IV C SD Negeri 102/II Sungai Kerjan Dalam Menumbuhkan Minat Baca Peserta Didik Pada Masa Belajar Jarak Jauh Di Era Covid-19
Authors: Andini Bunga , Husni Rauldatul , Fitri Alchonity Harika 
Published: October 2021

Strategi guru dilakukan untuk tercapainya suatu proses pembelajaran yang telah di rencanakan. Minat baca pada peserta didik tidak bisa tumbuh dengan sendirinya, akan tetapi membutuhkan peranan orang lain dalam menumbuhkan minat baca. Penelitian ini bertujuan untuk menganalisis adakah strategi guru kelas IV C SD Negeri 102/II Sungai Kerjan dalam menumbuhkan minat baca peserta didik pada masa belajar jarak jauh di era covid-19. Jenis penelitian ini penelitian kualitatif yaitu penelitian yang bersifat deskriptif dan cenderung menggunakan analisis berupa kata-kata seseorang, tulisan, atau lisan tentang perilaku seseorang yang dapat diamati. Pengumpulan data dilakukan dengan cara mewawancarai guru wali kelas IV C. Teknik pengumpulan data penelitian dengan melakukan observasi, wawancara dan dokumentasi. Hasil penelitian menunjukkan bahwa guru wali kelas IV C memiliki strategi dalam menumbuhkan minat baca peserta didik yaitu dengan cara memberi tugas membaca, memberi bahan bacaan yang menarik, memotivasi peserta didik, memberikan instruksi dengan jelas, memanfaatkan pojok baca, memberikan reward untuk menambah semangat peserta didik membaca dan bekerjasama dengan orang tua.
PENGARUH MODEL PEMBELAJARAN NUMBERED HEAD TOGETHER (NHT) TERHADAP HASIL BELAJAR SISWA MUATAN PEMBELAJARAN PPKn KELAS IV DI SDN 221/II TALANG PAMESUN
Authors: Wulandari Isti , Novitasari Ana , Pratama Deded 
Published: October 2021

Berdasarkan latar belakang peneliti, banyak sekali ditemukannya siswa yang pasif saat proses pembelajaran, interaksi antar siswa yang kurang saat belajar, jarang adanya diskusi kelompok saat belajar, siswa kurang bertanggung jawab mengerjakan tugasnya, dan rendahnya hasil belajar siswa PPKn di kelas IV. Upaya mengatasi permasalah tersebut, diperlukan model pembelajaran yang inovatif dan menarik yaitu Model Pembelajaran Numbered Head Together (NHT). Penelitian ini bertujuan untuk membuktikan pengaruh model pembelajaran Numbered Head Together (NHT) terhadap hasil belajar siswa muatan pembelajaran PPKn kelas IV di SDN 221/II Talang Pamesun. Jenis penelitian ini adalah kuantitatif yang menggunakan metode penelitiannya yaitu Ekperimen. Desain penelitian yang digunakan adalah Pre-Experimental Design dengan bentuk One group pretest posttest design. Sampel yang digunakan adalah seluruh siswa kelas IV di SDN 221/II Talang Pamesun. Hasil penelitian eksperimen ini datanya diolah dengan uji normalitas dan uji hipotesis. Hasil dari uji normalitas yaitu data pretest yaitu 0,550>0,05 dan signifikansi yang diperoleh dari data posttest yaitu 0,264>0,05. Artinya data pretest dan posttest siswa kelas IV SDN 221/II Talang Pamesun adalah berdistribusi normal. Sedangkan hasil uji hipotesis yaitu 0,000<0,05 artinya ditolak dan diterima. Maka dapat disimpulkan bahwa terdapat pengaruh model pembelajaran Numbered head Together (NHT) terhadap hasil belajar siswa muatan pembelajaran PPKn kelas IV di SDN 221/II Talang Pamesun.
Pengembangan Modul Bergambar Pada Tema 8 Untuk Meningkatkan Keterampilan Membaca Untuk Peserta Didik Kelas II Pembelajaran Bahasa Indonesia Di SD N 107 Ngaol I Kabupaten Merangin
Authors: Safitri Defa Gustia , Prasetyo Dian Estu , Saputra Riyadi 
Published: October 2021

Penelitian ini dilatar belakangi oleh kurangya keterampilan membaca peserta didik dalam pembelajaran bahasa Indonesia, sehingga diperlukan modul bergambar, ini membantu peserta didik agar dapat membaca dengan mudah mempelajari, tertarik untuk membaca ini dengan desain yang menarik dan bergambar, tujuannya yaitu modul bergambar ini valid, praktis dan efektif. Pengembangan modul bergambar menggunakan model ADDIE yang terdiri dari 5 tahapan yaitu, analisis (analyze), Perencanaan (design), pengembangan (development), implementasi (implementation), evaluasi (evaluation). Kelima tahapan dilakukan memulai analisis materi, analisis peserta didik, analisis kebutuhan. Kemudian uji validasi olen 3 orang validator ( tim ahli ) mengatakan valid dan pratis delanjutnya dilakukan uji efektifitas dengan melakukan tes soal oleh peserta didik di SD N 107 Ngaol I Kabupaten Merangin Hasil penelitian pengembangan modul bergambar ini uji oleh tiga validator memperoleh nilai dengan rata – rata 84,72% dengan dikategori sangat valid, Nilai pratikalitas guru memperoleh nilai rata- rata 96% dan nilai Pratikalitas Peserta didik memperoleh nilai rata – rata 94,42% dengan kategori sangat praktis dan nilai efektifitas memperoleh nilai rata – rata 92,85% dengan kategori sangat. Dapat disimpulkan bahwa modul bergambar ini pembelajaran bahasa Indonesia dengan hasil memenuhi kategori valid, pratis dan efektifitas. Dapat memudahkan peserta didik dan pendidik memcapai tujuan pembelajaran.
Вміст фотосинтетичних пігментів у хвої сосни звичайної (Pinus sylvestris L.) в умовах заповідних об'єктів міста Черкаси
Authors: Чемерис І. А. , Ключка С. І. 
Published: October 2021

Деревні насадження парків міст, що належать до природно-заповідного фонду держави, перебувають під впливом стресових чинників, тому є актуальним питання їх діагностики. Фотосинтетичний апарат рослин є одним з показників їх життєвого стану. Досліджено фотосинтетичний апарат хвої сосни звичайної парків-пам'яток садово-паркового мистецтва Черкас. Встановлено, що в Черкасах поєднання перепадів температури та збільшення середньої літньої температури і зниження відносної вологості повітря створює умови для посух. Високий рівень забруднення атмосферного повітря (індекс забруднення 7,22) у поєднанні з низьким потенціалом до розсіювання шкідливих домішок в атмосфері сприяють послабленню соснових деревостанів парків міста. Виявлено збільшення концентрації хлорофілів та каротиноїдів хвої порівняно з деревами контрольної ділянки у парках "Сосновий бір" (Ахл а – в 1,2 раза; Ахл b – в 1,6 раза; Акар – в 1,3 раза) та "Обласна лікарня" (Ахл а – в 1,4 раза; Ахл b – в 1,9 раза; Акар – в 1,4 раза), а у дерев парку "Перша міська лікарня" встановлено, що концентрація хлорофілу а та каротиноїдів в 1,5 раза, а хлорофілу b в 1,05 раза менша, ніж у контрольних дерев. Виявлено достовірний зворотній зв'язок між концентрацією сульфатів у снігових опадах та концентрацією хлорофілу а (r = -0,844 при ts = 6,24 ˃ t0,05 = 2,26) та хлорофілу b (r = -0,762 при ts = 5,37 ˃ t0,05 = 2,26). З'ясовано, що співвідношення вмісту хлорофілу a до хлорофілу b у досліджуваних дерев нижче (2,50-2,59) порівняно з контрольними деревами (3,52). Виявлено, що співвідношення вмісту хлорофілів до вмісту каротиноїдів у дерев контрольної ділянки (4,09) менше, ніж у дерев паркових насаджень (4,21-4,53). З'ясовано, що фотохімічна активність хлоропластів соснових деревостанів досліджуваних ділянок нижча порівняно з контролем (425,84±18,24): парк "Сосновий бір" – 386,44±15,63, парк "Обласна лікарня" – 354,26±12,34, парк "Перша міська лікарня" – 300,01±13,85. Встановлено, що зміни фотосинтетичного апарату рослин парків "Сосновий бір" та "Обласна лікарня" свідчать про розвиток адаптивної специфічної реакції на стресогенні чинники міського середовища, а зниження всіх досліджуваних показників сосни звичайної "Парку Першої міської лікарні" діагностує пригнічення фотосинтетичної функції деревостанів та розвиток деструктивних процесів.
TESS Data for Asteroseismology (T’DA) Stellar Variability Classification Pipeline: Setup and Application to the Kepler Q9 Data
Authors: Audenaert J. , Kuszlewicz J. S. , Handberg R. , Tkachenko A. , Armstrong D. J. , Hon M. , Kgoadi R. , Lund M. N. , Bell K. J. , Bugnet L. , Bowman D. M. , Johnston C. , García R. A. , Stello D. , Molnár L. , Plachy E. , Buzasi D. , Aerts C. ,   The T’DA collaboration
Published: October 2021

Abstract
The NASA Transiting Exoplanet Survey Satellite (TESS) is observing tens of millions of stars with time spans ranging from ∼27 days to about 1 yr of continuous observations. This vast amount of data contains a wealth of information for variability, exoplanet, and stellar astrophysics studies but requires a number of processing steps before it can be fully utilized. In order to efficiently process all the TESS data and make it available to the wider scientific community, the TESS Data for Asteroseismology working group, as part of the TESS Asteroseismic Science Consortium, has created an automated open-source processing pipeline to produce light curves corrected for systematics from the short- and long-cadence raw photometry data and to classify these according to stellar variability type. We will process all stars down to a TESS magnitude of 15. This paper is the next in a series detailing how the pipeline works. Here, we present our methodology for the automatic variability classification of TESS photometry using an ensemble of supervised learners that are combined into a metaclassifier. We successfully validate our method using a carefully constructed labeled sample of Kepler Q9 light curves with a 27.4 days time span mimicking single-sector TESS observations, on which we obtain an overall accuracy of 94.9%. We demonstrate that our methodology can successfully classify stars outside of our labeled sample by applying it to all ∼167,000 stars observed in Q9 of the Kepler space mission.
New Investigations of Dark-floored Pits In the Volatile Ice of Sputnik Planitia on Pluto
Authors: Alan Stern S. , Keeney Brian , Hoover Rachael , Protopapa Silvia , White Oliver , Grundy Will , Cruikshank Dale P. ,   And the New Horizons Team
Published: October 2021

Abstract
Sputnik Planitia, Pluto’s gigantic, volatile ice glacier, hosts numerous scientific mysteries, including the presence of thousands of elongated pit structures. We examine various attributes of these pit structures in New Horizons data sets, revealing their length, aspect ratio, and orientation properties; we also study their reflectivities, colors, and compositions, and compare these attributes to some other relevant regions on Pluto. We then comment on origin mechanisms of the pits and also the fate of the missing volatiles represented by the pits on Sputnik Planitia. From a sample of 317 pits, we find typical length/width ratios of 2–4, with their major axis preferentially oriented approximately north–south. We also find that the floors of large pits in our sample have similar single-scattering albedos and colors to dark material on crater rims and floors (i.e., possible subsurface windows) in Burney basin. We also find that the base of the three pits in our sample, large enough to study with LEISA IR spectroscopy, display both CH4 and N2 absorption features, as do the dark regions in crater windows in Burney basin. Evidence for a sublimation erosion origin for the pits is supported over both the explosion/ejecta venting and structural collapse alternatives. Finally, we find that the mass lost by the pits on Sputnik Planitia most likely lies condensed elsewhere, on Pluto’s surface, relocated there by volatile transport as opposed to removal by escape to space or photochemical conversion.
AT 2019qyl in NGC 300: Internal Collisions in the Early Outflow from a Very Fast Nova in a Symbiotic Binary*

†
Authors: Jencson Jacob E. , Andrews Jennifer E. , Bond Howard E. , Karambelkar Viraj , Sand David J. , van Dyk Schuyler D. , Blagorodnova Nadejda , Boyer Martha L. , Kasliwal Mansi M. , Lau Ryan M. , Mohamed Shazrene , Williams Robert , Whitelock Patricia A. , Amaro Rachael C. , Bostroem K. Azalee , Dong Yize , Lundquist Michael J. , Valenti Stefano , Wyatt Samuel D. , Burke Jamie , De Kishalay , Jha Saurabh W. , Johansson Joel , Rojas-Bravo César , Coulter David A. , Foley Ryan J. , Gehrz Robert D. , Haislip Joshua , Hiramatsu Daichi , Howell D. Andrew , Kilpatrick Charles D. , Masci Frank J. , McCully Curtis , Ngeow Chow-Choong , Pan Yen-Chen , Pellegrino Craig , Piro Anthony L. , Kouprianov Vladimir , Reichart Daniel E. , Rest Armin , Rest Sofia , Smith Nathan 
Published: October 2021

Abstract
Nova eruptions, thermonuclear explosions on the surfaces of white dwarfs (WDs), are now recognized to be among the most common shock-powered astrophysical transients. We present the early discovery and rapid ultraviolet (UV), optical, and infrared (IR) temporal development of AT 2019qyl, a recent nova in the nearby Sculptor Group galaxy NGC 300. The light curve shows a rapid rise lasting ≲1 day, reaching a peak absolute magnitude of M

V
= −9.2 mag and a very fast decline, fading by 2 mag over 3.5 days. A steep dropoff in the light curves after 71 days and the rapid decline timescale suggest a low-mass ejection from a massive WD with M
WD ≳ 1.2 M
⊙. We present an unprecedented view of the early spectroscopic evolution of such an event. Three spectra prior to the peak reveal a complex, multicomponent outflow giving rise to internal collisions and shocks in the ejecta of an He/N-class nova. We identify a coincident IR-variable counterpart in the extensive preeruption coverage of the transient location and infer the presence of a symbiotic progenitor system with an O-rich asymptotic-giant-branch donor star, as well as evidence for an earlier UV-bright outburst in 2014. We suggest that AT 2019qyl is analogous to the subset of Galactic recurrent novae with red-giant companions such as RS Oph and other embedded nova systems like V407 Cyg. Our observations provide new evidence that internal shocks between multiple, distinct outflow components likely contribute to the generation of the shock-powered emission from such systems.
A Detailed View of the Broad-line Region in NGC 3783 from Velocity-resolved Reverberation Mapping
Authors: Bentz Misty C. , Williams Peter R. , Street Rachel , Onken Christopher A. , Valluri Monica , Treu Tommaso 
Published: October 2021

Abstract
We have modeled the full velocity-resolved reverberation response of the Hβ and He ii optical broad emission lines in NGC 3783 to constrain the geometry and kinematics of the low-ionization and high-ionization broad-line region (BLR). The geometry is found to be a thick disk that is nearly face-on, inclined at ∼18° to our line of sight, and exhibiting clear ionization stratification, with an extended Hβ-emitting region (

r

median

=

10.07

−
1.12

+
1.10

lt-day) and a more compact and centrally located He ii-emitting region (

r

median

=

1.33

−
0.42

=
+
0.34

lt-day). In the Hβ-emitting region, the kinematics are dominated by near-circular Keplerian orbits, but with ∼40% of the orbits inflowing. The more compact He ii-emitting region, on the other hand, appears to be dominated by outflowing orbits. The black hole mass is constrained to be M
BH =

2.82

−
0.63

+
1.55

×

10

7

M
⊙, which is consistent with the simple reverberation constraint on the mass based on a mean time delay, line width, and scale factor of 〈f〉 = 4.82. The difference in kinematics between the Hβ- and He ii-emitting regions of the BLR is intriguing given the recent history of large changes in the ionizing luminosity of NGC 3783 and evidence for possible changes in the BLR structure as a result.
The Final Fates of Close Hot Subdwarf–White Dwarf Binaries: Mergers Involving He/C/O White Dwarfs and the Formation of Unusual Giant Stars with C/O-Dominated Envelopes
Authors: Schwab Josiah , Bauer Evan B. 
Published: October 2021

Abstract
Recently, a class of Roche-lobe-filling binary systems consisting of hot subdwarf stars and white dwarfs (WDs) with sub-hour periods has been discovered. At present, the hot subdwarf is in a shell He-burning phase and is transferring some of its remaining thin H envelope to its WD companion. As the evolution of the hot subdwarf continues, it is expected to detach, leaving behind a low-mass C/O-core WD secondary with a thick He layer. Then, on a timescale of ∼10 Myr, gravitational wave radiation will again bring the systems into contact. If the mass transfer is unstable and results in a merger and a catastrophic thermonuclear explosion is not triggered, it creates a remnant with a C/O-dominated envelope, but one still rich enough in He to support an R Corona Borealis-like shell-burning phase. We present evolutionary calculations of this phase and discuss its potential impact on the cooling of the remnant WD.
Quality of Life and its Determinants in Patients with Diabetes Mellitus from Two Health Institutions of Sub-himalayan Region of India
Authors: Gupta Jyoti , Kapoor Dheeraj , Sood Vivek 
Published: October 2021

Background:Diabetes mellitus (DM) causes serious deterioration in general quality of life (QoL) mainly affecting the health-related quality of life (HRQOL). Routine assessment of QoL improves communication with the patient, helps to predict treatment response, and supports clinical decision-making. QoL can predict an individual’s capacity to manage the disease and maintain long-term health and wellbeing.Aims:To find out the QoL and its socio-demographic, anthropometric, and clinical determinants among DM patients attending health institutions from sub-Himalayan region, catering rural population.Settings and Design:This cross-sectional study was conducted in two hospitals mostly catering rural population from 2014 to 2018. Purposive sampling technique was used.Materials and Methods:Socio-demographic, anthropometric, and clinical data of DM patients (N = 300) were collected. They were administeredHindi translation of QoL Instrument for Indian Diabetes Patients (QOLID) and Patient Health Questionnaire-9 (PHQ-9). All statistical analyses were carried out using Statistical Package for Social Sciences (SSPS) (Version 17.0, USA).Results:About 10% had very poor, 13% poor, 11% average, 16% good, and 50% very good QoL on QOLID. General health (GH) and treatment satisfaction (TS) were the most affected domains. Fatigue was the most common symptom (79%) reported in QOLID. Age more than 55 years, rural background, and PHQ-9 score of more than 7 were predictors of poorer QoL.Conclusion:There is a need for a holistic and collaborative care of DM patients, to maintain a good HRQoL. Screening of depression, fatigue, and regular assessment of QoL should be emphasized.
Upper Extremity High-Pressure Injection Injuries with Paint Thinner
Authors: Ipek Bugra , Sener Ugurcan , Elmas Feridun , Seven Ergin , Uslu Aysegül , Karamürsel Sebat 
Published: October 2021

Introduction:
High-pressure injection injuries are rare traumas of upper extremity which can result in high morbidity incompatible with presentation. Clinical presentation right after the injury can be misleading and might cause underrating of the condition. This may lead to latencies in treatment and might worsen the final prognosis of the patients. Prognosis changes according to the material injected, pressure the material is injected, injection site, and time between the injury and the onset of treatment. Digit amputation rates are between 16% and 48% in literature series, and this seems to decrease with early debridement.

Materials and Methods:
Emergency department referrals are searched retrospectively for patients with high-pressure injection injuries. Four patients were found that were treated for injured with high-pressure injection gun with paint thinner or mixtures. Relevant literature was searched and discussed.

Results:
Three out of four patients needed amputations (75%). Two patients needed flap surgery for reconstruction: one interpolation and one free flap. The average time from hospitalization to definitive operation was 9.5 days (minimum 6, maximum 15 days). Fingertip injuries resulted in amputations, and amputation level was more proximal than the injury level which was connected to the dissemination of the injected material.

Discussion:
High-pressure injection injuries can cause devastating results if neglected, and can be overlooked with inexperienced eyes. Usually, there are minimal complaints from the patients on the onset of the injury, but symptoms exacerbate by time. Early debridement in the first 6 h is crucial for lowering amputation rates. Injected material has a great impact on the outcomes, and organic solvents such as paint thinner, paints, diesel, and engine oil have worse outcomes and higher amputation rates.

Conclusion:
High-pressure injection injuries need emergency surgical intervention and should not be neglected. Delay in treatment of these cases could cause detrimental outcomes.