The first binary star evolution model producing a Chandrasekhar mass white dwarf

Today, Type Ia supernovae are essential tools for cosmology, and recognized as major contributors to the chemical evolution of galaxies. The construction of detailed supernova progenitor models, however, was so far prevented by various physical and numerical difficulties in simulating binary systems with an accreting white dwarf component, e.g., unstable helium shell burning which may cause significant expansion and mass loss. Here, we present the first binary evolution calculation which models both stellar components and the binary interaction simultaneously, and where the white dwarf mass grows up to the Chandrasekhar limit by mass accretion. Our model starts with a 1.6 Msun helium star and a 1.0 Msun CO white dwarf in a 0.124 day orbit. Thermally unstable mass transfer starts when the CO core of the helium star reaches 0.53 Msun, with mass transfer rates of 1...8 times 10^{-6} Msun/yr. The white dwarf burns the accreted helium steadily until the white dwarf mass has reached ~ 1.3 Msun and weak thermal pulses follow until carbon ignites in the center when the white dwarf reaches 1.37 Msun. Although the supernova production rate through this channel is not well known, and this channel can not be the only one as its progenitor life time is rather short (~ 10^7 - 10^8 yr), our results indicate that helium star plus white dwarf systems form a reliable route for producing Type Ia supernovae.Comment: 4 pages, 5 figure

Implementasi Kewajiban Kurator dalam Pembayaran Upah Pekerja Debitur Pailit: Analisis Putusan Mahkamah Agung Nomor 232 K/Pdt.Sus-Pailit/2021

This research focuses on the construction of wrongful acts related to the duties of curators and the considerations of judges in Supreme Court decisions. The research aims to gain in-depth understanding of wrongful acts by curators and how judges consider such cases. The theoretical contribution of the research is expected to enhance the understanding of wrongful acts in curator actions. Practically, the research results are anticipated to offer new perspectives for legal researchers and practitioners, as well as guidance for those involved in bankruptcy cases, emphasizing the principles of justice, legal utility, and legal certainty. The research has the potential to enrich legal insights related to bankruptcy and support the improvement of legal policies and practices in facing bankruptcy challenges

Multi-Session Reading Inservice: A Step In The Right Direction

Teachers, like members of other professional groups, are expected to learn, to grow, and to renew themselves. Although the need for effective inservice is evident and the qualities of effective inservice appear to be well-documented (Samuels and Pearson, 1988), school administrators seem still to be relying heavily on ineffective inservice formats. As university professors, we are frequently called to present the typical one-shot inservice session designed to provide something for everyone in less than two hours, with no provision for teacher participation or for follow-up activities and discussion

Afiks Nge- pada Media Sosial Twitter

Affix Nge- on Twitter Social Media ABSTRAKPembahasan pada penelitian ini mengenai perubahan bentuk afiksasi khususnya prefiks nge- pada media sosial Twitter. Oleh karena itu, penelitian ini bertujuan untuk mendeskripsikan perubahan bentuk afiks nge- dan makna yang ada dalam unggahan Twitter oleh warganet. Metode yang digunakan dalam penelitian adalah metode deskriptif kualitatif dengan data berupa kalimat yang mengandung afiks nge- dan sumber data berasal dari Twitter. Data dikumpulkan dengan metode simak dan teknik catat. Kemudian, analisis data menggunakan metode agih yang dilanjutkan dengan teknik bagi unsur langsung. Berdasarkan hasil analisis, pada media sosial Twitter ditemukan perubahan afiksasi pada afiks nge-, yaitu nge + v = v, nge + v + in = v, nge + n = v, nge + n + in = v, nge + adj.= v, nge + adj. + in = v. Kemudian, dari hasil data yang dianalisis keenam perubahan afiksasi menghasilkan kata berkategori verba.Kata kunci: afiks, Twitter, verbaABSTRACTThe discussion in this study is about changing in the form of affixation, especially the nge- prefix on Twitter social media. Therefore, this study aims to describe the changes in the form of the affix nge- and the meaning contained in Twitter uploads by netizens. The method which is used in this study is a qualitative descriptive method with data in the form of sentences containing the affix nge- and data sources is from Twitter. The data were collected using the listening method and note-taking technique. Then, the data analysis used the distribution method followed by the indirect division technique. Based on the analysis, on Twitter social media, it was found that the affixation changes in the affix nge-, namely nge + v = v, nge + v + in = v, nge + n = v, nge + n + in = v, nge + adj. = v , nge + adj. + in = v. Then, based on the results of the data analysis, the six changes in affixation produce verb words categorized.Keyword: affixes, Twitter, ver

Kewajiban Kurator Yang Hanya Membayarkan Sebagian Atas Upah Pekerja Debitur Pailit Yang Tidak Dikategorikan Sebagai Perbuatan Melawan Hukum (Studi Putusan Mahkamah Agung Nomor 232 K/Pdt.Sus- Pailit/2021)

(E) Kepailitan berguna mengatur keseimbangan kepentingan kreditur, pengusaha, dan debitor yang mengalami kesulitan keuangan. Agar prosesnya berjalan adil dan efisien, perlu seorang profesional yaitu kurator yang ditunjuk pengadilan untuk mengelola aset-aset debitor pailit. Terjadi pada kasus Putusan Mahkamah Agung No. 232 K/Pdt.Sus-Kepailitan/2021, pihak Pemohon Kasasi melayangkan kasasi kepada Endang Suharta, S.H., M.H selaku kurator kasus perkara kepailitan yang ditangani Bank Mandiri kota Semarang. Endang Suharta, terindikasi melakukan perbuatan melawan hukum dalam proses pemberian upah pekerja debitur pailit pada pihak-pihak terkait. Setelah dilakukan permohonan, Ratio Decidendi majelis hakim yang menyetujui kurator hanya membayarkan sebagian dari hak pekerja Woerjono Widjaja selaku debitor pailit adalah menyatakan bahwa biaya upah pekerja debitur pailit tidak termasuk dalam kategori biaya kepailitan yang harus dibayarkan

Math by the Month

These activities are designed to appeal directly to students, giving them open-ended questions to engage their intellect. Students may work on the activities individually, in pairs, or in small groups. No solutions are given for activities so that students will look to themselves as the mathematical authority.</jats:p

Dermoscopy in superficial fungal infection

 Superficial fungal infections are one of the most common skin infection infections. It is caused by fungal pathogens and are limited to the outer layer of the skin, hair, and nails. Superficial fungal infections include dermatophytosis, superficial candidiasis, and diseases caused by Malassezia spp. Most physicians diagnose and treat superficial fungal infections based solely on clinical appearance. But unfortunately, there are many other infectious and non-infectious diseases that have similar clinical appearance.Dermoscopy is a practical and noninvasive imaging method that allows magnifying clinical surface images that are normally invisible under a magnifying lens. In diagnosing superficial mycosis, dermoscopy was found to have a higher sensitivity and specifity compared to pottasium chloride (KOH) and fungal culture.More understanding is needed about the use of dermoscopy in diagnosing superficial fungal infections in the hope of being able to provide an overview of superficial fungal infections and dermoscopy, as well as dermoscopy features in some superficial fungal infections. In this article, the author describe dermoscopic findings in various superficial fungal infections on the skin, hair, and nails.</jats:p