bluuebunny/crossref_metadata_2025_split huggingface dataset:
DAUN LIDAH MERTUA (SANSEVIERIA) SEBAGAI ADSORBEN LOGAM PERAK (Ag) DAN KROMIUM (Cr) PADA LIMBAH CAIR INDUSTRI PERAK
Authors: Sri Hastutiningrum  
Published: February 2023

Perkembangan industri terus mengalami peningkatan seiring dengan perkembangan zaman. Namun, hal itu juga diikuti dengan bertambahnya jumlah limbah yang dihasilkan. Kotagede merupakan salah satu daerah yang terkenal akan kota penghasil kerajinan perak di provinsi Daerah Istimewa Yogyakarta. Limbah cair yang dihasilkan dari industri perak ini pada kenyataannnya belum diolah terlebih dahulu sebelum dibuang, padahal didalamnya masih terdapat kandungan logam berat seperti Perak (Ag) dan Kromium (Cr). Salahsatu upaya yang dapat dilakukan untuk mengurangi kadar Ag dan Cr pada limbah cair industri perak ialah dengan cara adsorpsi logam Ag Dan Cr menggunakan karbon aktif dari daun lidah mertua (Sansevieria). Tanaman lidah mertua ini mengandung unsure selulosa yang cukup tinggi sebesar 50 – 60%, sehingga ini menjadi salah satu potensi yang dapat dikembangkan karena masih sangat sedikit pemanfaatan tanaman lidah mertua yang hanya terbatas untuk tanaman hias saja.
Pembuatan karbon aktif dilakukan dengan variabel yang divariasikan, yaitu pertama jenis activator HCl dan KOH dengan konsentrasi masing–masing activator sebesar 1N. Kedua, waktu kontak adsorpsi 60 menit, 120 menit,180 menit, 240 menit, dan 300 menit.
Hasil penelitian ini menunjukkan persentase penyerapan terbanyak untuk logamAg diperoleh pada jenis aktivator HCl dengan waktu kontak adsorpsi 120 menit sebesar 88,1841%. Serta untuk logam Cr diperoleh pada jenis activator KOH dengan waktu kontak adsorpsi 240 menitsebesar 85,8897%.
STRATEGY FORMULATION ANALYSIS WITH COMPANY IMPLEMENTATION IN DEALING WITH THE COVID-19 PANDEMIC SITUATION
Authors: Mudzakkir Rizalullah 
Published: February 2023

The Covid-19 virus which has swept the world and become a global pademic has changed the world order. The reduced social economic activities of the community to reduce social interaction that can accelerate the spread of the virus, resulting in a decline in the performance of economic sectors. Many industries experience a decline in revenue and can result in further cessation of company operations. The Covid-19 pandemic to date has not been able to predict how long it will end which causes uncertainty about the future. In order for a company to continue to exist and grow sustainably, it is very important to formulate a future strategy that is full of uncertainty. Pizza Hut is one of the American restaurants and international franchises founded in 1958 in Wichita, Kansas by Dan and Frank Carney. The company is known for its Italian-American food, including pizza and pasta as well as side dishes and desserts. This research aims to implement marketing strategies to achieve excellence in the midst of this pandemic. The results showed that the marketing strategy used by Pizza Hut can increase sales volume by staying, even if selling on the side of the road. As well as the presence of information technology provides many benefits for Pizza HUT, such as being able to alleviate complex business activities as well as produce information that is trustworthy, relevant on time, complete, understandable and tested in the framework of planning, controlling and making management decisions. The results showed that the marketing strategy used by Pizza Hut can increase sales volume by staying, even if selling on the side of the road. As well as the presence of information technology provides many benefits for Pizza HUT, such as being able to alleviate complex business activities as well as produce information that is trustworthy, relevant on time, complete, understandable and tested in the framework of planning, controlling and making management decisions. The results showed that the marketing strategy used by Pizza Hut can increase sales volume by staying, even if selling on the side of the road. As well as the presence of information technology provides many benefits for Pizza HUT, such as being able to alleviate complex business activities as well as produce information that is trustworthy, relevant on time, complete, understandable and tested in the framework of planning, controlling and making management decisions.
Keywords: Covid-19, Management Strategy, and Strategy Formulation
Implementasi Tri Pusat Pendidikan Sebagai Model Pendidikan Karakter Religius Di Sekolah Dasar
Authors: Fadllurrohman Fadllurrohman , Jaenudin Jaenudin , Pratama Arizqi Ihsan 
Published: February 2023

Kemajuan teknologi informasi membuat arus informasi menjadi sangat deras, hal tersebut turut menggiring perubahan zaman dengan cepat. Arus informasi yang membawa beragam informasi baik dan buruk dengan mudah sampai kepada anak-anak, tidak terkecuali anak-anak usia sekolah dasar. Untuk itu upaya-upaya pencegahan harus dilakukan dalam rangka mengkounter arus informasi yang berpotensi menimbulkan dampak buruk bagi anak-anak usia sekolah dasar. Diantara langkah-langkah yang dapat dilakukan ialah dengan mengoptimalakan potensi sinergi pendidikan antara sekolah, rumah dan masyarakat dalam rangka penguatan pendidikan karakter religius. Metode penelitian yang digunakan ialah metode kualiatif yang dilakukan dengan cara mendeskripsikan temuan penelitian yang bersumber dari analisis dokumen. Hasil penelitian mengemukakan bahwa pendidikan karakter religius sangat penting diberikan sejak dini di tingkat sekolah dasar. Untuk mengoptimalkan program karakter religius siswa dapat dilakukan program kerjasama yang melibatkan sekolah, rumah dan masyarakat. Diantara Metode pendidkan karakter yang digunakan ialah melalui pembiasaan, peneladanan, dan pengkondisian lingkungam sekolah, rumah dan masyarakat. Inti dari program kerja sama ini ialah menghindari konflik nilai atau dilema moral yang mungkin terjadi sebagai akibat dari tidak terkoneksinya program sekolah dengan rumah dan masyarakat. Diantara aktifitas yang mengarah kepada penguatan karakter religius yang dapat dibiasakan, diteladankan dan dikondisikan di sekolah, rumah dan masyarakat ialah pembelajaran akhlak mulia, pembelajaran ibadah wajib dan pembelajaran ibadah sunnah.
Pengaruh Model Pembelajaran Somatic, Auditory, Visual, Intelectual (SAVI) Berbantuan Media Audio Visual dalam Meningkatkan Kemampuan Menulis Cerita Peserta Didik Kelas IV SD Negeri Gugus 21 Wilayah IV Lilirilau Kabupaten Soppeng
Authors: Rohani Rohani , Sulfasyah Sulfasyah , Munirah Munirah 
Published: February 2023

<p><em>Tujuan penelitian adalah u</em><em>ntuk mengetahui 1) deskripsi </em><em>hasil pembelajaran</em><em> kelas kontrol tanpa penggunaan model </em><em>pembelajaran SAVI berbantuan media audio visual dalam meningkatkan kemampuan menulis</em><em> cerita fiksi</em><em> siswa kelas IV</em><em>; 2) deskripsi p</em><em>engaruh model pembelajaran SAVI berbantuan media audiovisual terhadap kemampuan menulis cerita fiksi pada siswa kelas IV. Jenis penelitian ini adalah </em><em>jenis penelitian </em><em>pretest dan </em><em>posttest control group design atau disebut dengan true experimenteal design (eksperimen murni).</em><em> Jumlah sampel dalam penelitian ini adalah 46 orang, yang terdiri dari 23 orang kelas kontrol dan 23 orang kelas eksperimen. Metode pengumpulan data yang digunakan yaitu tes hasil belajar untuk mengukur keterampilan menulis, dan dokumentasi. Tehnik analisis data yang digunakan yaitu pendekatan statistik deskriptif dan analisis inferensial, uji hipotesis, dan uji N-Gain. Hasil penelitian yang didapatkan pada pembelajaran tanpa menggunakan model SAVI adalah tidak mengalami peningkatan dengan nilai rata-rata pretest 61 dan setelah diberikan postest hanya mendapatkan nilai rata-rata 65. Pada kelas yang menggunakan model pembeljaran SAVI mengalami peningkatan dengan nilai pretest 60 meningkat menjadi 86. Uji hipotesis dengan menggunakan uji Paired sampel test menunjukkan adanya pengaruh yang signifikan antara kelas kontrol dan kelas eksperimen sebelum dan setelah diberikan perlakukan. Maka dapat diperoleh nilai Sig.(2 tailed) = 0,000 &lt; 0,05 maka H<sub>o</sub> ditolak dan H<sub>1</sub> diterima. Jadi, penggunaan model pembelajaran SAVI berpengaruhterhadapkemampuan menulis cerita fiksi cerita fiksi pada siswa kelas IV SD Negeri Gugus 21 Wilayah IV Kecamatan Lilirilau Kabupaten Soppeng.</em></p><p><em> </em></p>
Fecundity and sex ratio inpuntius conchonius (pisces cyprinidae) from Garhwal Himalaya
Authors: Bahuguna Pankaj K. , Joshi H.K. , Dobriyal Anoop K. 
Published: February 2023

The paper deals with the analysis of reproductive capacity of Puntius conchonius (Ham.-Buch.), an important ornamental fish inhabiting the river MandaI in Garhwal Himalaya. Study is based on 73 mature female specimens in a length ranging from 53 to 79 mm were collected from river Mandal. The absolute fecundity ranged from 523.0 1± 100.3 ( fish length 54.2 ± 1.I mm, fish weight 2782.5 ± 84.6 mg, ovary length 17.5 ± 1.2 mm and ovary weight 250.1 1 12.7 mg) to 1366± 282 (fish length 77.4±1.4 mm, fish wight 8408 ± 861 mg, ovary length 26.2 ± 2.2 mm and ovary weight 584.7 ± 112.7 mg). Four linear relationships were observed between fecundity and different body parameters calculated by the method of least squares. Sex ratio of fish in nature was also studied monthly, which varied from 1:1 (April) to 1:1.8 (July) with an annual average I :1.17 (male: female, X 0.013 which is insignificant) .Overall it was found very close to the natural one.
Systematic KMTNet Planetary Anomaly Search. VII. Complete Sample of q < 10−4 Planets from the First 4 yr Survey
Authors: Zang Weicheng , Jung Youn Kil , Yang Hongjing , Zhang Xiangyu , Udalski Andrzej , Yee Jennifer C. , Gould Andrew , Mao Shude ,   Leading Authors, Albrow Michael D. , Chung Sun-Ju , Han Cheongho , Hwang Kyu-Ha , Ryu Yoon-Hyun , Shin In-Gu , Shvartzvald Yossi , Cha Sang-Mok , Kim Dong-Jin , Kim Hyoun-Woo , Kim Seung-Lee , Lee Chung-Uk , Lee Dong-Joo , Lee Yongseok , Park Byeong-Gon , Pogge Richard W. ,   The KMTNet Collaboration, Mróz Przemek , Skowron Jan , Poleski Radoslaw , Szymański Michał K. , Soszyński Igor , Pietrukowicz Paweł , Kozłowski Szymon , Ulaczyk Krzysztof , Rybicki Krzysztof A. , Iwanek Patryk , Wrona Marcin , Gromadzki Mariusz ,   The OGLE Collaboration, Wang Hanyue , Zhang Jiyuan , Zhu Wei ,   The MAP Collaboration
Published: February 2023

Abstract
We present the analysis of seven microlensing planetary events with planet/host mass ratios q < 10−4: KMT-2017-BLG-1194, KMT-2017-BLG-0428, KMT-2019-BLG-1806, KMT-2017-BLG-1003, KMT-2019-BLG-1367, OGLE-2017-BLG-1806, and KMT-2016-BLG-1105. They were identified by applying the Korea Microlensing Telescope Network (KMTNet) AnomalyFinder algorithm to 2016–2019 KMTNet events. A Bayesian analysis indicates that all the lens systems consist of a cold super-Earth orbiting an M or K dwarf. Together with 17 previously published and three that will be published elsewhere, AnomalyFinder has found a total of 27 planets that have solutions with q < 10−4 from 2016–2019 KMTNet events, which lays the foundation for the first statistical analysis of the planetary mass-ratio function based on KMTNet data. By reviewing the 27 planets, we find that the missing planetary caustics problem in the KMTNet planetary sample has been solved by AnomalyFinder. We also find a desert of high-magnification planetary signals (A ≳ 65), and a follow-up project for KMTNet high-magnification events could detect at least two more q < 10−4 planets per year and form an independent statistical sample.
Photometric Metallicity and Distance Estimates for ∼136,000 RR Lyrae Stars from Gaia Data Release 3
Authors: Li Xin-Yi , Huang Yang , Liu Gao-Chao , Beers Timothy C. , Zhang Hua-Wei 
Published: February 2023

Abstract
We present a sample of 135,873 RR Lyrae stars (RRLs) with precise photometric metallicity and distance estimates from our newly calibrated P–ϕ
31–R
21–[Fe/H]/P–R
21–[Fe/H] and G-band absolute magnitude–metallicity relations. The P–ϕ
31–R
21–[Fe/H] and P–R
21–[Fe/H] relations for type RRab and type RRc stars are obtained from nearly 2700 Gaia-identified RRLs, with precise ϕ
31 and R
21 measurements from light curves and metallicity estimates from spectroscopy. Using a few hundreds of nearby RRLs, with accurate distances estimated from the parallax measurements in Gaia Early Data Release 3, new G-band absolute magnitude–metallicity relations and near-IR period–absolute magnitude–metallicity relations are constructed. External checks, using other high-resolution spectroscopic samples of field RRLs and RRL members of globular clusters, show that the typical uncertainties in our photometric metallicity estimates are about 0.24 and 0.16 dex for type RRab and type RRc stars, respectively, without significant systematic bias with respect to the high-resolution spectroscopic metallicity measurements. The accuracies of these metallicity estimates are much improved, especially for type RRab stars, when compared to those provided by Gaia Data Release 3. Validations of our distance estimates, again using members of globular clusters, show that the typical distance errors are only 3%–4%. The distance moduli μ
0 = 18.503 ± 0.001 (stat) ± 0.040 (syst) mag for the Large Magellanic Cloud (LMC) and μ
0 = 19.030 ± 0.003 (stat) ± 0.043 (syst) mag for the Small Magellanic Cloud (SMC) are estimated from our type RRab star sample and are in excellent agreement with previous measurements. The mean metallicities of the LMC and SMC derived in this work are also consistent with previous determinations. Using our sample, a steep metallicity gradient of −0.024 ± 0.001 dex kpc−1 is found for the LMC, while a negligible metallicity gradient is obtained for the SMC.
Dust Echoes from Luminous Fast Blue Optical Transients
Authors: Metzger Brian D. , Perley Daniel A. 
Published: February 2023

Abstract
Luminous fast blue optical transients (LFBOTs) such as AT2018cow form a rare class of engine-powered explosions of uncertain origin. A hallmark feature of these events is radio/millimeter synchrotron emission powered by the interaction of fast ≳0.1c ejecta and dense circumstellar material (CSM) extending to large radii ≳1016 cm surrounding the progenitor. Assuming this CSM to be an outflow from the progenitor, we show that dust grains up to ∼1 μm in size can form in the outflow in the years before the explosion. This dusty CSM would attenuate the transient’s ultraviolet emission prior to peak light, before being destroyed by the rising luminosity, reddening the premaximum colors (consistent with the premaximum red-to-blue color evolution of the LFBOT candidate MUSSES2020J). Reradiation by the dust before being destroyed generates a near-infrared (NIR) “echo” of luminosity ∼1041–1042 erg s−1 lasting weeks, which is detectable over the transient’s rapidly fading blue continuum. We show that this dust echo is compatible with the previously unexplained NIR excess observed in AT2018cow. The gradual decay of the early NIR light curve can result from CSM, which is concentrated in a wide-angle equatorial outflow or torus, consistent with the highly aspherical geometry of AT2018cow’s ejecta. Premaximum optical/UV and NIR follow-up of LFBOTs provide a new probe of their CSM environments and place additional constraints on their progenitors.
Nondetection of CHIME/Fast Radio Burst Sources with the Arecibo Observatory
Authors: Good Deborah C. , Chawla Pragya , Fonseca Emmanuel , Kaspi Victoria , Meyers B. W. , Pleunis Ziggy , Sand Ketan R. , Scholz Paul , Stairs I. H. , Tendulkar Shriharsh P. 
Published: February 2023

Abstract
In this work, we present follow-up observations of two known repeating fast radio bursts (FRBs) and seven nonrepeating FRBs with complex morphology discovered with the CHIME/FRB project. These observations were conducted with the Arecibo Observatory 327 MHz receiver. We detected no additional bursts from these sources, nor did CHIME/FRB detect any additional bursts from these sources during our follow-up program. Based on these nondetections, we provide constraints on the repetition rate for all nine sources. We calculate repetition rates above 1 Jy using both a Poisson distribution of repetition and the Weibull distribution of repetition presented by Oppermann et al. For both distributions we find repetition upper limits of the order λ = 10−2–10−1 hr−1 for all sources. These rates are much lower than those published for notable repeating FRBs like FRB 20121102A and FRB 20201124A, suggesting the possibility of a low-repetition subpopulation.
Turbulence Driving by Interstellar Pickup Ions in the Outer Solar Wind
Authors: Isenberg Philip A. , Vasquez Bernard J. , Smith Charles W. 
Published: February 2023

Abstract
We revisit the question of how the unstable scattering of interstellar pickup ions (PUIs) may drive turbulence in the outer solar wind and why the energy released into fluctuations by this scattering appears to be significantly less than the standard bispherical prediction. We suggest that energization of the newly picked-up ions by the ambient turbulence during the scattering process can result in a more spherical distribution of PUIs and reduce the generated fluctuation energy to a level consistent with the observations of turbulent intensities and core solar wind heating. This scenario implies the operation of a self-regulation mechanism that maintains the observed conditions of turbulence and heating in the PUI-dominated solar wind.
Atmospheric Pressure and Molecular Cloud Formation in Early-type Galaxies
Authors: Babyk Iu. V. , McNamara B. R. , Nulsen P. E. J. , Russell H. R. , Edge A. C. , Blitz Leo 
Published: February 2023

Abstract
A strong correlation between atmospheric pressure and molecular gas mass is found in central cluster galaxies and early-type galaxies. This trend and a similar trend with atmospheric gas density would naturally arise if the molecular clouds condensed from hot atmospheres. Limits on the ratio of molecular to atomic hydrogen in these systems exceed unity. The data are consistent with ambient pressure being a significant factor in the rapid conversion of atomic hydrogen into molecules as found in normal spiral galaxies.
L’accès à l’Assistance Médicale à la Procréation (AMP) pour les couples de femmes et les femmes seules : témoignage d’un responsable d’un centre d’AMP, quelles conséquences en pratique ?
Authors: Belaisch-Allart Joëlle 
Published: February 2023

Après une très longue gestation, la loi dite de bioéthique a enfin été promulguée le 2 août 2021 mais nous attendons encore la publication de certains décrets d’application. Cette loi va-t-elle vraiment révolutionner la pratique de l’AMP en France, nombre de professionnels en doutent… En théorie, les couples de femmes et les femmes seules dénommées femmes non mariées dans la loi vont pouvoir être prises en charge, c’était la mesure phare de la loi, celle qui a éclipsé toutes les autres. En pratique, ces femmes vont consulter leur gynécologue ou les centres d’AMP qui vont les adresser au Centre d’étude et de consevation des oeufs et du sperme (CECOS) le plus proche pour obtenir la précieuse paillette de sperme. Dans quel délai l’obtiendront-elles, nul ne sait, mais pas plus rapidement que les couples hétérosexuels qui attendent un an voire plus. Quel effet va avoir la levée de l’anonymat sur les donneurs ? Si les donneurs français se comportent comme ceux des autres pays ou l’anonymat a été levé ils vont dans un premier temps diminuer et il n’est pas sûr que la campagne de presse de l’Agence de Biomédecine (ABM) ait un effet positif !
Le témoignage des CECOS au sujet de l’accès à l’assistance médicale à la procréation avec don de spermatozoïdes et à l’accès aux « origines »
Authors: Metzler-Guillemain Catherine 
Published: February 2023

La fédération des CECOS (Centres d’Études et de Conservation des Œufs et du Sperme) rassemble la majorité des centres autorisés pour la gestion des activités d’Assistance Médicale à la Procréation (AMP) avec tiers donneur (97 % des centres autorisés pour le don de spermatozoïdes, 80 % des centres autorisés pour de don d’ovocytes, 80 % des centres autorisés pour l’accueil d’embryon). La loi n° 2021-1017 du 2 août 2021 relative à la bioéthique prévoit de nombreux changements dans les pratiques des centres d’AMP, notamment concernant l’AMP avec tiers donneur : la prise en charge de couples de femmes ou de femmes non mariées, le recours au double don de gamètes, la possibilité (sous conditions) d’accès aux données non identifiantes et à l’identité du tiers donneur même pour des personnes majeures nées antérieurement à cette loi. Plus de 40 000 personnes actuellement majeures sont nées suite au recours à l’AMP avec tiers donneur au sein des CECOS. Combien d’entre elles solliciteront la commission d’accès aux données non identifiantes et à l’identité du tiers donneur ? Quelles réponses auront-elles ? Quelles conséquences auront ces mesures sur les anciens donneurs et leur famille ? Par ailleurs, comment assurer des délais d’attente raisonnables pour tous les receveurs en don de spermatozoïdes ? La France veut mettre en place un système reposant sur des valeurs comme la non-rémunération du don et des donneurs motivés par l’altruisme, des receveurs pris en charge en don de spermatozoïdes avec un délai raisonnable, et une couverture par l’assurance maladie pour tous. Le défi est à relever, il impose une coopération parfaite entre les professionnels, les tutelles et les instances gouvernementales afin de répondre aux attentes des patients.
Conservation des gamètes sans indication médicale : une nouvelle possibilité mais des interrogations pratiques
Authors: Bujan Louis 
Published: February 2023

La loi relative à la bioéthique du 2 août 2021 donne la possibilité à toute personne majeure de pouvoir conserver ses gamètes, en absence d’indication médicale, pour une utilisation ultérieure à son profit. Cette disposition soulève de nombreuses questions pratiques. Le prélèvement de gamètes étant bien plus simple chez l’homme et l’intérêt d’une telle conservation étant discutée, la conservation des ovocytes sera principalement abordée dans ce travail. Concernant l’âge de la femme en bénéficiant, un équilibre est nécessaire entre un âge trop précoce qui ferait apparaître cette conservation comme inutile et un âge trop tardif qui rendrait la technique non efficiente. La question du nombre de ponctions ovariennes se pose à la lumière du nombre d’ovocytes nécessaires pour une chance raisonnable d’avoir un enfant. Le caractère invasif de la méthode impose un bilan rigoureux afin de prévenir les potentiels effets indésirables et ce d’autant plus qu’il n’y a pas d’indication médicale. La question de l’information est d’intérêt majeur dans la mesure où les contraintes et limites de la méthode doivent être explicitées afin de ne pas donner de faux espoirs aux femmes. Si la loi prévoit un suivi de la conservation et, à l’arrêt de celle-ci, une requalification des gamètes notamment vers le don, sa mise en place n’apparait pas simple. Le nombre de femmes recourant à cette méthode ne peut être qu’hypothétique mais si seulement 5 à 10 % des femmes de 30 ans s’orientent vers la conservation cela imposera des moyens supplémentaires pour les centres pour répondre à la demande.
La république turque a 100 ans. Qu’en est-il de sa population ?
Authors: Yildiz Dilek , Adali Tugba , Özdemir Caner 
Published: February 2023

En octobre 2023, la république de Turquie célébrera son 100 e anniversaire. Depuis sa fondation, la population du pays est passée de 13,5 millions d’habitants lors du premier recensement de 1927 à 84,7 millions en 2021, et l’indice synthétique de fécondité de 6 naissances par femme à moins de 2 au cours de la même période. Avec une diminution continue de sa mortalité, la population commence à montrer les premiers signes de vieillissement. En termes de migration, la Turquie, autrefois un pays d’origine, est progressivement devenue un pays de transit et d’accueil pour les migrants, principalement en provenance de Syrie et d’autres pays du Moyen-Orient. L’intention d’émigrer de Turquie est élevée parmi les jeunes, en raison de l’incertitude du pays confronté à des crises économiques et un chômage élevé.