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Quasi-periodic eruptions (QPEs) are luminous bursts of soft X-rays from the nuclei of galaxies, repeating on timescales of hours to weeks1-5. The mechanism behind these rare systems is uncertain, but most theories involve accretion disks around supermassive black holes (SMBHs) undergoing instabilities6-8 or interacting with a stellar object in a close orbit9-11. It has been suggested that this disk could be created when the SMBH disrupts a passing star8,11, implying that many QPEs should be preceded by observable tidal disruption events (TDEs). Two known QPE sources show long-term decays in quiescent luminosity consistent with TDEs4,12 and two observed TDEs have exhibited X-ray flares consistent with individual eruptions13,14. TDEs and QPEs also occur preferentially in similar galaxies15. However, no confirmed repeating QPEs have been associated with a spectroscopically confirmed TDE or an optical TDE observed at peak brightness. Here we report the detection of nine X-ray QPEs with a mean recurrence time of approximately 48 h from AT2019qiz, a nearby and extensively studied optically selected TDE16. We detect and model the X-ray, ultraviolet (UV) and optical emission from the accretion disk and show that an orbiting body colliding with this disk provides a plausible explanation for the QPEs.

Critical thinking ability and character education seem to be interesting educational topics that are being discussed in the digital era of 21st century. It is necessary to optimize the character education in the learning process earlier using various learning media. The aim of this study is to investigate the influence learning process of legend story the theme of "obligation and right me" using the a character-based media of "wayang beber" (the legend of "Wasis Joyokusumo") on the students' critical thinking ability. This study is quasi experimental research using post-test only non-equivalent. The samples or participants are two classes in Pati city, namely SD Ngepungrejo 01 Pati as the control class with 36 students and SD Payang 2 Pati as the experimental class with 38 students. Cluster sampling is a technique used to determine the research subject. The data then collected using several techniques, namely observations, interviews, tests, and document analysis. In analyzing the data, descriptive and inferential statistical analysis methods are implemented. In this case, the content validity and construct validity are utilized to test the internal validity. The external validity is tested using try out test of instruments on the sample of study. The validity and reliability tests are implemented. After that, the questions are eligible to be used to obtain the data. The conclusion of study is that the implementation of "wayang beber" as a character-based learning media influences the students' critical thinking ability because the significance value is less than 0,01.

Short stories have the advantage of teaching materials. Because of its short form, it is flexible to be used as teaching materials that do not take long to read. This study aims to describe the teachers' perception of the urgency of integrating tolerance education in the short story appreciation, the content of tolerance values in the short story appreciation learning instruments in high school, and the content of tolerance values in the short story appreciation teaching materials in textbooks. In order to achieve that, a descriptive qualitative method was employed in this study. The results are as follows: (1) All Indonesian teachers in senior high schools in Surakarta have the perception that the value of tolerance education is important to be integrated into learning, including in the short story appreciation learning. (2) The character of tolerance is always listed in the Syllabus document and the Core Competency component of the lesson plan. Apart from that component, the character of tolerance is implicitly included in the character of "caring" and "open to others' opinions" in 86% of the syllabus and lesson plans. (3) There are 9% of short story appreciation teaching materials that have tolerance education content. The potential for this tolerance content is found in a lot of teaching material topics in the form of learning activities and short stories.

Samin is an Indonesian tribe at Mount Kendeng, exactly in the cities of Blora and Bojonegoro. Samin people reject school, fez, polygamy, long trousers, and trade. Although they look like out of date, they have 7 good characters i.e discipline, honesty, responsibility, cooperation, tolerance, social care, and environmental care. This research aimed at investigating the strategies for implementing local wisdom-based character education among Indonesian higher education students by focusing on the values sated in Jamuskalimasada book of Samin Community. The data of this phenomenological research were collected by observation, interview, questionnaire, and documentation. The findings demonstrated that teaching character education in the higher education based on local wisdom could be conducted by integrating values and aesthetics in the course, internalizing positive values to students, habituation and training, providing example and model, creating characterized-situation based on local wisdom, and civilizing. Value-based vision of study program or campus can be achieved through educational strategy formulation including value habituation, value role model, value internalization, value integration in learning, and cultural value. Teaching character education was related to both character actualization programmed in the lesson plan and good example provision in the classroom and daily campus activities.

The objectives of this research are (1) revealing the lecturers and students' perception on the use of multicultural-based short story appreciation textbook in teaching prose-fiction appreciation course; and (2) evaluating the effectiveness of multicultural-based short story appreciation textbook in teaching prose-fiction appreciation course. This study employed a mixed-method approach by combining evaluative descriptive research design and experimental design to evaluate multicultural-based short story appreciation textbook in private universities in East Java, Indonesia. The data were gathered via interview, questionnaires, documentation, and test. While choosing the experimental and control group from each university, the sampling technique used was cluster random sampling. The results reveal that both the lecturers and the students showed their positive responses and attitudes towards the use of multicultural-based short story appreciation textbook in teaching prose-fiction appreciation course. They asserted that the textbook could motivate the students in learning prose-fiction appreciation course. It is inferred that the use of multicultural-based short story appreciation textbook is more effective than the use of previously common textbook used by the lecturers to teach prose-fiction appreciation.

John Lachs considers his major philosophical contributions to be his work on mediation, the love of life, and his explication of George Santayana's philosophical and literary outlooks. All three are undergirded by Lachs's effort to make philosophy relevant to people's lives. This article examines these three contributions with both a critical eye and an admiration for Lachs's efforts. The conclusion provides an assessment often missed in critiques of Lachs's work. Keywords: John Lachs, George Santayana, Wallace Stevens, Consciousness, Education, Immediacy, Living Well, Love of Life, Mediation, Naturalism, Neuroscience, Non-reductive Materialism, Preface John Lachs considers his major philosophical contributions to be his work on mediation, the love of life, and his explication of George Santayana's outlook. He notes that the foundation [...]

The study aims to find out the effectiveness of poetry appreciation textbook for the implementation of character education values at the Higher Education institution. It was set in four universities, two of which are located in Central Java, including University of Sebelas Maret Surakarta and University of Muhammadiyah Purworejo meanwhile, the other two are in Special Region of Yogyakarta, including University of Ahmad Dahlan, and University of Sarjanawiyata Taman Siswa. It utilized an experimental method with Independent Sample T-Test based on the mean difference of pre-test and post-test results from the control and experimental group. The finding confirms that the experimental group obtained the average score that equals 15.68, meanwhile the control group obtained 10.86. The T-Test shows tcalc = 5.087 (p = 0.000<0.05), that rejects the Null Hypothesis. It concludes that there is a significant difference between the experimental and control group in the use poetry appreciation textbook for character education implementation at the Higher Education institution. The study expects further exploration concerning character education implementation through literature works in a wider range for the sake of research and development. The uniqueness of the textbook in combining the values of personal development and literature is recommended as the dominant feature to introduce a complex gradual learning system for the innovation of teaching and learning method.

Teaching and learning speaking skills should be able to engage students in a creative process. Students have to be able to speak in front of the class, create a dialogue, tell a story, and produce the language creatively. The teaching and learning of the speaking skill focusing on story telling ability can work well when supported by the appropriate choice of teaching method. This study attempts to: 1) identify the list of things needed by teachers of primary schools to teach Bahasa Indonesia in fun and creative ways, 2) design a prototype of suggestopedia based storytelling learning model to teach Bahasa Indonesia in primary schools, 3) develop the prototype into a suggestopedia based storytelling learning model to teach Bahasa Indonesia in primary schools, 4) determine the effectiveness of the application of suggestopedia based storytelling learning model to teach Bahasa Indonesia in primary schools. This research is a model development study based on the procedures by Borg and Gall. This study demonstrated that a teaching model is created through the following steps: 1) identifying and analyzing the needs of the students and teachers, 2) designing and evaluating the model, 3) developing and testing the model. The effectiveness test showed a significant increase of 3.03 or 8.11% in the experimental group's mean score, from 18.94 in the pretest to 21.97 in the posttest. Meanwhile, the control group only experienced a 2.51 or 6.36% in the mean score, from 18.50 in the pretest to 21.05 in the posttest. Hence, it can be concluded that the students' story telling skill in the experiment class using the teaching method developed in this study was higher than in the control class. The result implied that the teaching model prototype can be further developed to increase the primary students' story telling skill in Salatiga.

In this study, a variety of ZnO-based heterojunctions with disparate wt.% doping of WO3 and BiOI have been prepared for the photodestruction of methyl orange (MO) dye in aqueous solution. The composites were analysed by scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, optical studies, and nitrogen adsorption-desorption isotherms. The SEM images revealed non-uniform surfaces of the ZnO–BiOI based composites while mostly nodular morphology was observed for all three samples of ZnO-WO3. As the WO3 loading increased, more clustering was detected. The analysed samples exhibited characteristic peaks representative of the triclinic phase of WO3 and the hexagonal wurtzite structure of ZnO, while the diffractogram observed from the materials displayed distinct peaks corresponding to the crystalline phases of both BiOI and ZnO in their pure forms. Further evidence of the samples' characteristics includes the presence of distinct crystalline patterns without any impurity peaks, a red shift in the absorption spectra of the heterostructure, the detection of only the reference elements, and mostly Type IV isotherm adsorption. This study identified the ZnO-[10%]BiOI and ZnO-[10%]WO3 heterojunctions as the best performing photocatalysts, as MO was completely destroyed in 120 and 90 min, respectively. Thus, confirming 10% wt. as the optimal doping concentration for the best photo-activity in this study. The impact of varying process parameters demonstrates that at an elevated photocatalyst mass of 40 mg, both heterojunctions effectively degraded MO. The photodegradation efficiency of MO was more pronounced in strong acidic conditions (pH 2) when compared to high alkaline conditions (pH 11) for the ZnO-[10%]BiOI heterostructure. However, a decrease in performance was observed for both strong acidic and high alkaline pH values when the ZnO-[10%]WO3 heterostructure was applied. The kinetic analysis of the photodegradation study reveals that all the photodegradation experiments can be represented by the pseudo-first-order kinetic model. The findings from this investigation propose that the ZnO-[10%]BiOI heterojunction photocatalyst holds significant potential for the effective treatment of dye-contaminated wastewater.

Calcium oxalate (CaOx) crystallization under laminar flow conditions, relevant for kidney stone formation, was studied in a microfluidic device simulating the geometry of kidney collecting ducts. In a typical microfluidic experiment, two reactive solutions with designated concentrations of calcium (Ca) and oxalate (Ox) ions were brought into contact in a microfluidic channel to create a laminar co-current flow of the two streams. As the streams flow co-currently in the channel, diffusion takes place between the two streams across the channel width, resulting in reactive crystallization leading to CaOx nucleation and growth of CaOx crystals along the mixing front. We studied the growth of these crystals in artificial urine as a function of the fluid flow rate in the channel, the molar ratio of Ca : Ox in the medium and the presence of an organic protein, osteopontin (OPN), known to inhibit the growth of CaOx crystals. Three different flow velocities at a fixed molar ratio of Ca : Ox = 7.5 and four molar ratios of Ca : Ox at a fixed mean flow velocity of 0.035 m s−1 were tested. Lastly, three additive OPN concentrations were evaluated: 2.4 × 10−8 mol m−3, 6 × 10−8 mol m−3 and 8.4 × 10−8 mol m−3. The mean flow velocity did not alter the crystal growth of CaOx in the studied range, whereas altering the molar ratio of Ca : Ox had a high impact on the growth rate. In addition, the type of pseudopolymorph which nucleated appears to depend strongly on the molar ratio. At a low Ca : Ox ratio, both calcium oxalate monohydrate (COM) and calcium oxalate dihydrate (COD) nucleated simultaneously and the growth of the two pseudopolymorphic forms of CaOx crystals was observed. The lowest applied OPN concentration decreased the growth rate of COD, while higher concentrations of OPN slowed down the nucleation kinetics to a point that it completely inhibited the formation of any CaOx crystal in artificial urine within the investigated timeframe. COD was seen under all the conditions investigated, whilst COM was seen in experiments for Ca : Ox molar ratio values between 5 and 6. Our results were rationalized using finite element simulations supported by solution chemistry modelling. [ABSTRACT FROM AUTHOR]

Background/Objectives: Products from various parts of Crataegus species are traditionally applied as a cardiotonic. In Europe and the USA, mainly Crataegus monogyna Jacq. (Lindm.) and Crataegus laevigata (Poir.) DC (synonym Crataegus oxyacantha L.) are used, but worldwide, other Crataegus species are also used. Phytotherapeutic preparations with a standardised content of flavonoids and/or oligomeric procyanidins are commercially available. The products are generally considered as safe and are at most associated with minor and atypical adverse reactions. The aim of this study was to critically assess the information about the safety of Crataegus-containing products in humans. Methods: A scoping review of the literature about adverse reactions associated with Crataegus-containing products was performed. Next, individual case safety reports (ICSRs) were assessed, which were included in VigiBase (the World Health Organisation's global database of adverse event reports for medicines and vaccines) and in the database of the Netherlands Pharmacovigilance Centre Lareb. The findings are discussed in relation to the literature. Results: The scoping review yielded 23 clinical studies with single-herb and 14 with multi-herb preparations, from which only a few minor gastrointestinal and cardiac events had been reported. A total of 1527 reports from VigiBase, from 1970 to 2023, were analysed, as well as 13 reports from Lareb. The most frequently reported adverse reactions belonged to the system organ classes 'gastrointestinal disorders', 'skin and subcutaneous tissue disorders', 'general disorders and administration site conditions', 'cardiac disorders' or 'nervous system disorders'. In 277 reports of VigiBase, a single-herb product was the only suspect for causing the adverse reaction(s). Of these, 12.6% were graded as serious. Conclusions: The results of our study provide deeper insight in the adverse reaction profile of Crataegus-containing products and should contribute to their safe application in the treatment of less severe forms of cardiac failure. [ABSTRACT FROM AUTHOR]

The threat that climate change poses to water resource systems has led to a substantial and growing number of impact studies. These studies follow two approaches: (a) top‐down studies are driven by projections of future climate change provided by downscaled general circulation models (GCMs); and (b) bottom‐up studies are driven by the systematic evaluation of exploratory scenarios. Top‐down approaches produce realistic scenarios rooted in the simulation of thermodynamic and dynamic processes represented in GCMs, but the internal resolution of these processes make it difficult to link vulnerabilities to discrete components of change. Bottom‐up approaches link vulnerabilities to discrete components of change through the structured evaluation of exploratory scenarios, but the lack of insight rooted in climate change processes can lead to the development of implausible scenarios. This paper evaluates exploratory scenarios developed through thermodynamic and dynamical guided perturbations motivated by GCM‐bound insights. The result is a hybrid approach that bridges a gap between top‐down and bottom‐up approaches. This yields several advantages. First, emerging vulnerabilities are linked to distinct thermodynamic and dynamic processes that are modeled in GCMs with differential likelihoods and plausible ranges of change. Second, the structured evaluation of process‐informed exploratory scenarios link system vulnerabilities to distinct components of climate change. An illustrative case study demonstrates perturbations linked to thermodynamic and dynamical processes have a large impact on stakeholder‐defined flood and drought performance, and the structured evaluation of process‐informed exploratory scenarios find nuanced infrastructure‐specific vulnerabilities that would be difficult to identify using an alternative approach. Plain Language Summary: This paper addresses the threat climate change poses to water resource systems. Existing studies mainly use top‐down and bottom‐up methods. Top‐down studies rely upon climate models but struggle to assess local concerns. Bottom‐up studies assess local concerns but struggle to link those concerns to ways the climate is changing. This paper introduces a hybrid approach that combines the strengths of both methods. It evaluates local vulnerabilities using variables that drive impacts and are represented in climate models. A case study shows that this hybrid approach identifies local flood and drought vulnerabilities that would be difficult to find with traditional top‐down and bottom‐up methods. This paper aims to enhance our understanding of how climate change impacts water resource systems. Key Points: Exploratory scenarios rooted in processes represented in climate model simulations enhance bottom‐up climate vulnerability assessmentsSystematic exploration of climate drivers with uncertain futures enhance top‐down climate impact assessmentsExploratory scenarios linked to specific climate change insights identify nuanced system‐centric vulnerabilities [ABSTRACT FROM AUTHOR]