bluuebunny/crossref_metadata_2025 huggingface dataset:
Farklı Şekillerde İşlenerek Soğukta (+4 °C) Muhafaza Edilen İnci Kefalinde (Chalcalburnus tarichi, Pallas 1811) Muhafaza Süresince Meydana Gelen Kalite Değişiklikleri
Authors: Sağun Emrullah , Ekici Kamil , Sancak Hakan , Yörük İbrahim , Duyar Hünkar Avni
Published: November 2024

Bu araştırmada; bütün halde ve temizlenerek vakumsuz/vakumlu ambalajlanıp 20 gün süreyle soğukta (+4 °C) muhafaza edilen inci kefalinde (Chalcalburnus tarichi, Pallas 1811) meydana gelen mikrobiyolojik, kimyasal ve duyusal değişiklikler incelenmiştir. Toplam aerob psikrofil mikroorganizmalar ve laktik asit bakterileri bütün gruplarda muhafaza süresince artarak 20. gün 7-8 log kob/g seviyelerine ulaşırken, Pseudomonas spp. sayıları ise sadece vakumsuz ambalajlanan örneklerde artmıştır (5-6 log kob/g). Örneklerin hiçbirinde fekal streptekoklara rastlanmamış, maya-küfler ve koliform grubu mikroorganizmalar muhafaza süresince düzensiz bir seyir izlemiştir. Toplam uçucu bazik azot (TVB-N) ve tiyobarbitürik asit (TBA) miktarları ile peroksit sayıları bütün gruplarda artarken, pH değerleri, vitamin (A, D3) miktarları ve duyusal analiz puanları azalmıştır. Belirlenen TBA miktarlarının, TVB-N ve duyusal analiz bulguları ile uyum göstermediği görülmüştür. Bütün halde vakumlanarak ambalajlanan örneklerde, kan ve sindirim sisteminin içeriği hoşa gitmeyen bir görünüm ve kokuya neden olmuştur. Sonuç olarak; inci kefalinin soğukta bütün halde 7 gün, baş ve iç organları çıkarılarak ise 10 gün süreyle muhafaza edilebileceği belirlenmiştir. Duyusal özellikler ve raf ömrü üzerine balıkları temizleyerek vakumlu ambalajlamanın olumlu bir etkisinin bulunduğu ve bunun en uygun yöntem olabileceği değerlendirilmiştir. Ayrıca, az yağlı bir balık olan inci kefalinde TBA miktarı ve peroksit sayısının tazeliğin belirlenmesinde yararlanılabilecek güvenilir kriterler olmadığı kanaatine varılmıştır.
Research on Hematology, Inflammatory and Antimicrobial Peptide Levels according to Clinical Scoring in Calves with Bovine Respiratory Disease (BRD)
Authors: Aktaş M. Sinan , Eren Emre , Aydın Ömer , Yanar Kerim Emre , Küçükler Sefa , Eroğlu Muhammed Sertaç , Değirmençay Şükrü , İlgün Murat
Published: November 2024

Bovine respiratory disease (BRD) is a significant and costly disease in cattle, characterized by various infections with distinct causes and clinical signs. This study focuses on investigating some hematological and inflammatory parameters, as well as cathelicidin antimicrobial peptide (CAMP) parameters, in calves with BRD. Forty-two calves were allocated to three groups based on clinical scoring: Group I (n=10, healthy, score 0), Group II (n=16, BRD, score 3), and Group III (n=16, BRD, score 4). Some hematological (WBC, NEU, LYM, NLR, and PLT), inflammatory (IL-1β, TNF-α, NF-ĸB, and IL-10), and CAMP parameters were evaluated in all groups. Group III had significantly higher WBC, NEU, and NLR concentrations than Group I, while concentrations of PLT in Group II were higher than Group I (p
SANITIZAÇÃO DE MATERIAIS ODONTOLÓGICOS
Authors: De Oliveira Michelle Alvarez Donati Soares
Published: November 2024

RESUMO
A biossegurança na prática odontológica é essencial para o controle de infecções cruzadas, garantindo um ambiente seguro tanto para pacientes quanto para profissionais de saúde. Medidas como esterilização rigorosa, uso de equipamentos de proteção individual (EPIs), higienização correta das mãos e desinfecção de superfícies e instrumentos são práticas fundamentais para a redução da carga microbiana e prevenção de contaminações. A classificação de materiais em artigos críticos, semicríticos e não críticos permite a escolha de técnicas específicas de desinfecção e esterilização conforme o nível de risco, otimizando a proteção contra agentes infecciosos. A utilização de produtos eficazes e biodegradáveis, como o ácido peracético, demonstra uma alternativa viável e segura para a desinfecção de instrumentos odontológicos, sendo uma opção que alia segurança microbiológica e baixo impacto ambiental.A educação continuada dos profissionais e o cumprimento disciplinado dos protocolos de biossegurança são primordiais para mitigar riscos de infecção e assegurar a qualidade no atendimento odontológico. As evidências mostram que práticas simples, como a higienização das mãos, podem reduzir drasticamente a incidência de infecções associadas aos cuidados de saúde, enquanto o uso adequado de EPIs minimiza a exposição a agentes patogênicos, aumentando a segurança ocupacional. Dessa forma, o comprometimento com a biossegurança não só protege os indivíduos, mas também promove a confiabilidade e eficácia dos tratamentos odontológicos.
OS CUIDADOS DE ENFERMAGEM À MULHER NO CLIMATÉRIO
Authors: Silva da Costa Kelyane , Andrade Campos Vitória , De Paiva dos Santos Edmea Maria
Published: November 2024

O climatério é o período que engloba o primeiro ano da menopausa, que ocorre devido a alteração hormonal (diminuição dos níveis de estrógeno e progesterona) onde a mulher passa do período reprodutivo para o não reprodutivo, provocando sintomas como ondas de calor, suores noturnos, irregularidades menstruais, alterações de humor, distúrbios do sonso, diminuição da libido, secura vaginal, dificuldades cognitivas, alteração no peso, dor nas articulações entre outros. Diante da saúde da mulher durante o climatério, as ações de enfermagem devem abordar de maneira holística todos os aspectos que permeiam essa fase de transição e com programas de educação em saúde. O artigo teve como objetivo analisar os cuidados de enfermagem direcionadas à mulher no climatério, destacando sua importância para a promoção da saúde e bem-estar nesse período de transição. A metodologia adotada foi a de revisão integrativa de literatura, foramincluídos nos resultados artigos originais completos escritos em português ou inglês desenvolvidos na área da saúde; artigos que abordem a temática; e artigos publicados nos anos de 2019 a 2024. E como resultados, apresentamos que apesar da falta de capacitação contíinua dos profissionais, aconsulta de enfermagem baseada nas teorias de enfermagem (Autocuidado, conforto) é fundamental para sanar dúvidas, melhorar o conhecimento, o autocuidado e otimizando a qualidade de vida da mulher no climatério. Assim, concluímos que com conhecimento e autonomia, o profissional consegue prestar uma assistência qualificada e que supre as necessecidades apresentadas pela mulher no climatério.
PREPARO DO CANAL RADICULAR DO MOLAR INFERIOR COM SISTEMA PRODESIGN LOGIC 2 – RELATO DE CASO
Authors: Coelho Travassos Rosana Maria , Tenório Dourado Chaves Adriane , Guimarães Sampaio Trajano Dos Santos Pedro , Alves Josué , Batista Lopes do Nascimento Alexandre , Cavalcanti Ribeiro da Silva Vânia , De Albuquerque Pontes Mônica Maria , De Sá Rodrigues Verônica Maria , Wale Rodrigues Martins William , Rocha Oliveira Elisangela , Barreto Silva Luciano
Published: November 2024

O objetivo deste estudo foi o de descrever o preparo dos canais radiculares com um sistema rotatório em um molar inferior de um paciente de 12 anos. Após exame clínico e radiográfico, o diagnóstico provável foi o de periodontite apical crônica. O preparo foi realizado com o sistema rotatório Easy ProDesign Logic. A exploração dos canais radiculares feita com s lima #10 c-pilot, A patência foraminal realizada após odontometria eletrônica (Iroot Apex) com a lima Prodesign Logic #30.01 nos canais mésio-vestibular e mésio-lingual e #45.01 no canal distal, um milímetro além da saída do forame. O preparo dos canais radiculares foi realizado com lima Prodesign Logic #30.05 nos canais mésio-vestibular e mésio-lingual  e #45.05 no canal palatino. A obturação dos canais radiculares, realizada na mesma sessão com a técnica do cone único MX (Tanari) associado ao cimento Bio-C Sealer. Concluiu-se que o sistema ProDesign Logic determinou uma boa formatação dos canais, facilitando a obturação do sistema de canais radiculares. Conclui-se que o sucesso da terapia endodôntica é alcançado quando se realiza o saneamento e  modelagem do sistema de canais com limas rotatórias de níquel-titânio.
GERMAN CONSTITUTIONALISM AND PHILOSOPHICAL-CRATOLOGICAL TEACHINGS
Authors: Saurov Ravshonbek Ruslanbek ogli
Published: November 2024

This paper discusses the constitutionalism principle in the German philosophy and its cratological implementation. Mainly the philosophical-cratological and constitutional views of German philosophers, such as I.Kant, Hegel, K. Marx and F. Nissche are analyzed and their ideas on the statehood, government, justice and law are discussed.
KEY WORDS: constitutionalism, independence, parliamentarism, monarchy, arbitrariness, absolutism
A critical review on m-learning for generation Z
Authors: Mandau Loviana Lenyu Dunstan , Lakulu Muhammad Modi
Published: November 2024

Mobile technology has become an essential part of education as it showed its effectiveness in the teaching and learning process. The need for flexibility in teaching and learning has resulted in the shifting paradigm from the traditional methods of teaching towards m-learning. M-learning is a methodology for teaching and learning that uses mobile devices equipped with wireless connectivity, which offers the user to learn anytime and anywhere. Presently, state-of-the-art mobile technologies usage dramatically in high demand and almost dominated our lives in communication, socializing, and learning, especially among the young generation, generation Z. As a result, it is important to improve the attractiveness of the user interface (UI) elements in m-learning application to prevent distraction among generation Z towards m-learning. Therefore, the purpose of this paper is to deliver a critical review of the trend of the m-learning frameworks and models, generation Z characteristics, the teaching and learning strategies based on generation Z’s characteristics, benefits, issues, and challenges. Hence, it may become comprehensive guidance for the policymakers, academicians, and researchers in this field who intend to adopt m-learning into the educational program.
Non-Standard Binary Representations and the Stern Sequence
Authors: Anders Katie , Dawsey Madeline Locus , Gupta Rajat , Vandehey Joseph
Published: November 2024

We show that the number of short binary signed-digit representations of an integer $n$ is equal to the $n$-th term in the Stern sequence.  Various proofs are provided, including direct, bijective, and generating function proofs.  We also show that this result can be derived from recent work of Monroe on binary signed-digit representations of a fixed length.
New Oscillation Conditions Test for Neutral Differential Equations
Authors: Bazighifan Omar , Al-Batati Anwar , Alshammari Nawa , Iambor Loredana Florentina
Published: November 2024

In this work, we investigate new oscillation conditions of delay differential equations of second-order. We start by finding new relations  and inequalities between the corresponding function and its solution, also with its derivatives. The new inequalities allow us to improve the asymptotic and oscillation conditions of the solutions of the this equation. By using an improved method and approach, we obtain new criteria that test the all solutions oscillation. The article provides some examples that highlight the significance of new conditions and properties.
A case series of three patients with extensive lung metastatic pheochromocytoma/paraganglioma: evaluation, treatment challenges, and outcomes
Authors: Charles Kailah M. , Nazari Matthew A. , Jha Abhishek , Talvacchio Sara , Kuo Mickey J. M. , Patel Mayank , Ling Alexander , Alzahrani Ali S. , Prodanov Tamara , Derkyi Alberta , Chen Alice , Glod John , Del Rivero Jaydira , Pacak Karel
Published: November 2024

Pheochromocytomas (PCCs) and paragangliomas (PGLs; together PPGLs) are uncommon neuroendocrine tumors arising from adrenal medullary chromaffin cells and sympathetic/parasympathetic paraganglia. Though PPGLs predominate in adult populations, pediatric cases of PPGLs represent more aggressive disease outcomes with 12% being diagnosed as metastatic. Metastatic disease (spread to bone, lung, lymph nodes, or liver) occurs in a subset of PPGLs, ranging from 15% to 17% depending on the underlying pathogenic variant. Historically, pulmonary metastases present clinically as multiple small lesions; however, cases of PPGLs with innumerable small metastases (a miliary pattern) overwhelming lung parenchyma define a novel yet exceptionally challenging disease presentation. This pattern of pulmonary lesions upon treatment and/or cellular lysis may lead to both respiratory decompensation as well as prolific catecholamine release, incurring significant morbidity and mortality if not appropriately managed. Of the 2,649 PPGL patients enrolled in our protocol from January 1, 2000, to April 30, 2023, 500 had metastatic disease, 122 were children/adolescents, and 3 of the 122 children/adolescents had extensive pulmonary metastatic disease. All three adolescent patients with extensive pulmonary metastases had cluster 1 PPGLs and suffered hypoxemia (due to pulmonary metastases) leading to overactive hypoxia signaling and catecholamine-induced signs and symptoms [among them hypertension and/or tachyarrhythmia(s)]. Interventions including surgery, chemotherapy, and radiotherapy were pursued. Two patients achieved disease stability, while one patient succumbed to disease. Ultimately these divergent outcomes emphasize the importance of recognizing poor prognostic factors and aggressive disease early, to select appropriate treatments. Thus, optimal management of these patients must consider complications of catecholamine excess and the profound influence of hypoxia. Herein, we describe three adolescent cases of extensive pulmonary metastatic PPGL and the unique clinical challenges faced in treating these tumors alongside relevant literature to provide guidance on appropriate interventions (ClinicalTrials.gov identifier: NCT00004847).
Managing severe oral mucositis using a novel combination of photobiomodulation therapy and pilocarpine hydrochloride: a case report
Authors: Dawoud Agha Aya , Abdul-Hak Mahmmoud , Albasher Auday , Bakkour Moudar
Published: November 2024

Combined treatment of photobiomodulation therapy and pilocarpine hydrochloride (Salagen) helped a patient suffering from severe oral mucositis and malnutrition resulting from radiochemotherapy for head and neck cancers. This treatment sped up the patient’s healing process and improved his quality of life by stimulating cells and increasing saliva secretion. The severity of oral mucositis was measured according to the World Health Organization (WHO) scale and the oral mucositis assessment scale. This case report highlighted a new combination treatment that may be the key to successfully managing severe oral mucositis during radiochemotherapy without the need to stop or modify cancer therapy.
Randomized Kaczmarz Algorithm Applied D’Hondt Method for Extremely Massive MIMO Wireless Communication Systems
Authors: Fukuda Tatsuki
Published: November 2024

Extremely massive MIMO (Multiple-Input Multiple-Output) is a technique to enable the spatial diversity. The systems employ a large number of antennas at the base stations, resulting in high computational complexity in various processes of wireless communications. The precoding process is one of them because the process requires the calculation of matrix inversion. The randomized Kaczmarz algorithm(rKA) is an iterative method to obtain the approximation so the computational time of precoding can be decreased. Some improvements of rKA were proposed so far, the iteration number required to obtain the approximation of inverse matrix is not so small. In this paper, we propose a new rKA method that applies the D’Hondt method, typically used for seat allocation in elections. In rKA process, the row vector is selected to use for updating approximation. Our method selects the row vector based on the D’Hondt method while the conventional rKA methods select the row vector probabilistic. Some results of simulation showed that the bit error ratio (BER) performance of our method is superior to other rKA methods at higher normalized transmit powers (NTP). The results also showed that the BER performances of our method with small number of iterations are more accurate than the others especially at high NTPs. That means our method can achieve the same BER performance with smaller number of iterations as the others, so the computational complexity of precoding with rKA is decreased.
КРУГЛЫЙ СТОЛ «НОРМА И НЕНОРМА В БИЗНЕС-КОММУНИКАЦИИ»
Authors: Л.В. СЕЛЕЗНЕВА
Published: November 2024

В работе представлено содержание круглого стола «Норма и не- норма в бизнес-коммуникации», который состоялся в рамках Косто- маровского форума 2024 г. Приглашенные эксперты рассмотрели актуальные вопросы деловой коммуникации в теоретическом, ис- следовательском и прикладном аспектах. В результате обсуждения эксперты пришли к выводу, что в бизнес-коммуникации статусно- ролевые характеристики участников влияют на дискурсивную практику, определяя особенности построения и восприятия речи.

The paper presents the content of the round table «Normal and abnormal in business communication», which was held during the Kostomarov Forum (2024). The invited experts considered topical issues of business communication in theoretical, research and practical aspects. As a result of the discussion, the experts came to the conclusion that in business communication the status-role characteristics of the participants influence the discursive practice, determining the peculiarities of speech construction and perception.
The Effect of the Government Internal Control System on the Performance of Government Agencies
Authors: Saputra Ade , Setiawan Ade Budi , Jamaludin Ayi
Published: November 2024

This study aims to analyze the impact of the Government Internal Control System, budget, and organizational commitment on the performance of government agencies in Bogor City. Using a descriptive survey method, this study involves 36 Regional Government Organizations, with 10 Regional Government Organizations purposively selected as the sample. Data were collected through questionnaires, and results were analyzed using multiple linear regression to test the hypotheses. The findings indicate that Internal Control System, budget, and organizational commitment significantly influence government agency performance, both overall and partially. The combined influence of these three variables on the performance of government agencies in Bogor City reaches 44.5%. These findings highlight the importance of effective Internal Control System implementation, adequate budget allocation, and strong organizational commitment in improving government performance. This study contributes by providing insights for policymakers in Bogor City to strengthen these aspects to achieve more optimal governmental performance.
Patients Monitoring and Data Management System for Hospitals
Authors: Abdulrahman Khuder Shahad , Nawfal Abdulrazzaq Sura
Published: November 2024

This work concerns creating a monitoring system for a smart hospital using Raspberry Pi to measure vital signs. The readings are continually sent to central monitoring units outside the room instead of being beside the patients, to ensure less contacting between the medical staff and patients, also the cloud is used for those who leave the hospital, as the design can track on their medical cases. Data presentation and analysis were accomplished by the LabVIEW program. A Graphical User Interface (GUI) has been created by the Virtual-Instrument (VI) of this program that offer real-time access to monitor patients' measurements. If unhealthy states are detected, the design triggers alerts and sends SMS message to the doctor. furthermore, the clinicians can scan a QR code (which is assigned to each patient individually) to access its real-time measurements. The system also utilizes Electrocardiography (ECG) to detect abnormalities and identify specific heart diseases based on its extracted parameters to encourage patients to seek timely medical attention, while aiding doctors in making well-informed decisions. To evaluate the system's performance, it is tested in the hospital on many patients of different ages and diseases as well. According to the results, the accuracy measurement of SpO2 was about 98.39%, 97.7% for (heart rate) and 98.7% for body temperature. This shows that the system can offer many patients receiving health services from various facilities, and it ensures efficient data management, access control, real-time monitoring, and secure patient information aligning with healthcare standards.
From Crisis to Recovery: Successful Experiences in the Eradication of Narcotics in Afghanistan Local Communities
Authors: YAR Fayaz Gul Mazloum
Published: November 2024

Purpose:Afghanistan, as one of the world’s largest producers of narcotics, faces significant social, economic, and health challenges. This research aims to identify and analyze the successful experiences in narcotics eradication in local Afghan communities and to evaluate the factors contributing to these successes.Methodology:A qualitative methodology was employed, utilizing semi-structured interviews with local community members, experts, and government officials. The data were analyzed using qualitative content analysis.Findings:The research findings indicate that educational programs, awareness-raising initiatives, the development of alternative economic opportunities, and active community participation have played crucial roles in reducing narcotics cultivation and consumption. Nevertheless, financial constraints, administrative corruption, and cultural resistance remain significant barriers to successfully implementing these programs.Implication:The study concludes that with increased international support, administrative transparency, and strengthened educational and economic programs, the dependency of local communities on narcotics cultivation can be significantly reduced. This research provides a foundation for the development of effective national policies in the fight against narcotics in Afghanistan.
Consequences of Talak, Khulu' and Marriage Fasakh Based on a Compilation of Islamic Law in Indonesia
Authors: SAPUTRA Deris Arista
Published: November 2024

Purpose:This study examines the effectiveness of the Compilation of Islamic Law (KHI) in handling divorce cases through talak, khulu’, and fasakh in Indonesia. This study aims to understand the significant role of KHI in providing justice for couples experiencing marital conflict.Methodology:Using library methods, data were collected from various literature sources and religious court decisions related to talak, khulu’, and fasakh. This study uses a library method, a systematic approach to reviewing and analyzing data from various literatures. This library research type studies theory, concepts, and regulations relevant to divorce cases through talak, khulu', and fasakh decisions.Findings:The results show that KHI functions not only as a formal rule but also as an instrument of protection for women and children and supports post-divorce welfare. These findings confirm that KHI has important flexibility relevant to the country's social conditions and can be used as a model for ethically and contextually responsive Islamic family law.Implication:This research provides an essential contribution to the development of science, both theoretically and practically. Theoretically, this research strengthens the understanding of the adaptation of Islamic law in the modern context, mainly how the KHI as a derivative of Islamic law can be applied effectively in a pluralistic society. Practically, this research enriches the study of Islamic family law in Indonesia by providing empirical data showing that the mechanisms of talak, khulu', and fasakh can be implemented formally and ethically.
Flink-ML: machine learning in Apache Flink
Authors: Mezati Messaoud , Aouria Ines
Published: November 2024

The emergence of Big Data has spurred the development of various frameworks designed for efficient data storage and processing. Key frameworks include Hadoop, Spark, Flink, Storm, Pig, and Zookeeper. Among these, Apache Flink stands out as a prominent open-source platform known for its powerful stream and batch processing capabilities. It functions as a versatile engine for large-scale processing, incorporating built-in modules for streaming, SQL, machine learning (ML), and visualization tasks.This paper introduces Flink-ML, Flink’s open-source distributed machine learning library, which has been added to the Flink ecosystem in response to the exponential growth of machine learning applications in recent years. Flink-ML addresses the increasing demand for scalable machine learning solutions by offering efficient implementations of a variety of algorithms. As the community around Flink continues to grow, so too does the number of contributors and available algorithms within Flink-ML.Flink-ML is designed to support multiple programming languages and provides a high-level API that leverages Flink’s rich ecosystem. This integration simplifies the development of end-to-end machine learning pipelines, allowing developers to efficiently build and deploy models. Overall, Flink-ML enhances the capabilities of the Flink framework, making it an ideal choice for organizations looking to harness the power of machine learning within their Big Data projects.
Functionally graded material porous sandwich symmetrical and no-symmetrical subjected to free vibration using high order theory
Authors: Slimane Merdaci , Ali Bouchafa , Adda Hadj Mostefa , Elamine Dahamni Mohamed
Published: November 2024

In this paper, analytical solutions for the free vibration analysis of functionally graded material symmetric and no-symmetric porous square sandwich plates are obtained using high order a shear deformation theory. Three-layer square sandwich plates with functionally graded skins at the top and bottom and an isotropic core in the middle are considered for the study. The material properties of the skins vary across the thickness according to the power law distribution. During manufacture of these plates, defects such as porosities can appear. This study investigates three different porosity distributions (H, X and V). Numerical analysis demonstrates how the material distribution, geometry, and porosity affect the free vibration responses of symmetric and no symmetric square FGM sandwich plates.
TFP shocks and endogenous innovation ability in manufacturing industry: from the perspective of structural stickiness
Authors: Zhao Dangru , Zhao Tianshu , Du Ran
Published: November 2024

This paper identifies the systemic shocks of total factor productivity (TFP) at the macro level and industry level, and then evaluates the structural stickiness of TFP shocks by using information entropy and industry correlation degree through counterfactual structural simulation based on China’s manufacturing companies. We find that: in the face of TFP systemic shocks, the industries with less structural stickiness include computer communication and other electronic equipment manufacturing, special equipment manufacturing and general equipment manufacturing, indicating that these industries have a strong internal innovation power. The TFP distribution of electrical machinery and equipment manufacturing industry and ferrous metal smelting and rolling industry showed structural differentiation, and the lower tail enterprises are not sensitive to TFP shocks. The industries with strong structural stickiness are non-ferrous metal processing industry and non-metallic mineral products industry, etc., which have weak internal innovation power and need exogenous innovation incentives. In addition, there is a significant positive correlation between industry correlation and information entropy, which emphasizes the radiation effect role of industries with high industry correlation degree. The research provides a new method to evaluate the innovation ability of the industry and a basis for the differentiation of innovation incentive policies in the industry.
Formation of CN and CO Molecules in the Envelope of Nova V1391 Cas During the Near-maximum Phase
Authors: Kawakita Hideyo , Lyke James E.
Published: November 2024

Moderate-resolution spectra (R ≈ 2700) of the classical nova V1391 Cas were obtained in the near-infrared wavelength range of 0.95–2.45 μm on UT 2020 August 14.41 using the Keck II telescope and the NIRES spectrograph. The spectral analysis revealed simultaneous detection of CO and CN molecular features. The CN red-system band was observed solely in absorption, while the CO first overtone bands, encompassing both 12CO and 13CO, displayed a combination of emission and absorption features at different velocities, resembling a P-Cygni profile. This specific CO profile is unprecedented in classical novae observations. Additionally, the negative velocity shifts in the absorption bands of both CN and CO were found to be consistent with each other.
The MDW Hα Sky Survey: Data Release 0
Authors: Aftab Noor , Zhang Xunhe (Andrew) , Mittelman David R. , di Cicco Dennis , Walker Sean , Sliski David H. , Homa Julia , Holm-Hansen Colin , Putman Mary , Schiminovich David , Henden Arne , Walker Gary
Published: November 2024

The Mittelman–di Cicco–Walker (MDW) Hα Sky Survey is an autonomously operated and ongoing all-sky imaging survey in the narrowband Hα wavelength. The survey was founded by amateur astronomers and is presented here in its first stage of refinement for rigorous scientific use. Each field is exposed through an Hα filter with a 3 nm bandwidth for a total of 4 hr, with a pixel scale of 3.″2. Here, we introduce the first Data Release of the MDW Hα Survey (Data Release 0, or DR0), spanning 238 fields in the region of Orion (∼3100 deg2). DR0 includes: calibrated mean fields, star-removed mean fields, a point-source catalog matched to Data Release 1 of the Panoramic Survey Telescope and Rapid Response System (Pan-STARRS1) and the Isaac Newton Telescope Galactic Plane Survey (IGAPS), and mosaics.
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DR0 components are available at http://mdw.astro.columbia.edu; the DR0 catalog can also be found on the AAS Journals Zenodo repository: doi:10.5281/zenodo.12747455.
uGMRT Survey of EXoplanets Around M-dwarfs (GS-EXAM): Radio Observations of GJ 1151
Authors: Narang Mayank , Puravankara Manoj , Vedantham H. K. , Ishwara-Chandra C. H. , De Ayanabha , Tyagi Himanshu , Banerjee Bihan , Nayak Prasanta K. , Surya Arun , Shridharan B. , Pathak Vinod C. , Tripathi Mihir
Published: November 2024

Coherent radio emission with properties similar to planetary auroral signals has been reported from GJ 1151, a quiescent, slow-rotating mid-M star, by the LOFAR Two-meter (120–170 MHz) Sky Survey. The observed LOFAR emission is fairly bright at 0.89 mJy with 64% circular polarization, and the emission characteristics are consistent with the interaction between an Earth-sized planet with an orbital period of 1–5 days and the magnetic field of the host star. However, no short-period planet has been detected around GJ 1151. To confirm the reported radio emission caused by the putative planet around GJ 1151 and to investigate the nature of this emission, we carried out upgraded Giant Metrewave Radio Telescope observations of GJ 1151 at 150, 218, and 400 MHz over 33 hr across ten epochs. No emission was detected at any frequency. While at 150 and 218 MHz, nondetection could be due to the low sensitivity of our observations, at 400 MHz, the rms sensitivities achieved were sufficient to detect the emission observed with LOFAR at ∼20σ level. Our findings suggest that the radio emission is highly time variable, likely influenced by the star-planet system’s phase and the host star’s magnetic field. Additional observations below 170 MHz, at more frequent epochs (as the periodicity of the emission is unknown), especially during periods of high stellar magnetic field strength, are needed to confirm the emission.
KBSS-InCLOSE. I. Design and First Results from the Inner Circumgalactic Medium of QSO Line-of-sight Emitting Galaxies at z ∼ 2–3
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Authors: Nuñez Evan Haze , Steidel Charles C. , Kirby Evan N. , Rudie Gwen C. , Prusinski Nikolaus Z. , Chen Yuguang , Zhuang Zhuyun , Strom Allison L. , Erb Dawn K. , Pettini Max , Welsh Louise , Rupke David S. N. , Cooke Ryan J.
Published: November 2024

We present the design and first results of the inner circumgalactic medium (CGM) of QSO line-of-sight emitting galaxies at z ∼ 2–3, Keck Baryonic Structure Survey (KBSS)-InCLOSE. The survey will connect galaxy properties (e.g., stellar mass M
*, interstellar medium, hereafter ISM, metallicity) with the physical conditions of the inner CGM (e.g., kinematics, metallicity) to directly observe the galaxy-scale baryon cycle. We obtain deep Keck/KCWI optical IFU pointings of KBSS QSOs to discover new star-forming galaxies at small projected distances b ≲ 12″ (98 kpc,

z

¯

=
2.3

), then obtain follow-up Keck/MOSFIRE near-IR spectra to confirm their redshifts. We leverage KBSS images and Keck/High Resolution Echelle Spectrometer QSO spectra to model stellar populations and inner CGM absorption. In this paper, we analyze two QSO fields and discover more than 15 new galaxies with KCWI, then use MOSFIRE for two galaxies Q2343-G1 (z = 2.43; G1) and Q2233-N1 (z = 3.15; N1), which are both associated with damped Lyα absorbers. We find that G1 has typical M
*, UV/optical emission properties. N1 has lower M
* with very strong nebular emission. We jointly analyze neutral phase CGM and ionized ISM in N/O (for the first time at this z), dust extinction, and high-ionization CGM finding that G1's CGM is metal poor and less evolved than its ISM, while N1's CGM and ISM abundances are comparable; their CGM shows ∼1 dex less dust extinction than the ISM; and G1's CGM has direct evidence of hot, metal-rich galactic outflow ejecta. These findings support that metals and dust are driven into the CGM from outflows, but may also be, e.g., stripped ISM gas or satellite enrichment. The full KBSS-InCLOSE sample will explore these scenarios.
The Effect of Anisotropic Energy Injection on the Ejecta Emission
Authors: Li Yu-Fei , Lin Da-Bin , Zhou Li , Ren Jia , Chen Zhi-Lin , Liang En-Wei
Published: November 2024

A rapidly rotating magnetar has long been assumed to inject energy into the ejecta through isotropic output energy in previous works. However, the output energy of a magnetar is anisotropic and a jet is generally presented in the rotational direction of a magnetar. In this paper, we present a consistent model of the energy injection from a magnetar, considering both the anisotropic magnetic dipole radiation and the jet’s ingredient (i.e., the late jet mentioned refers to the beamed magnetars wind). In the situation that the energy injection into the ejecta presents a significant effect on the ejecta’s emission, two facts are obtained. (1) For an observer in the equatorial direction, there is no significant difference between the light curves of the ejecta’s emission based on the consistent model and those obtained in previous works (i.e., based on the isotropic energy injection). (2) For an on jet-axis observer, however, the difference is significant, especially in the optical/U-band. If the jet is not present in the system, the rise of the optical/U-band light-curve is actually steeper than that in previous works because the output energy of the anisotropic magnetic dipole radiation is mainly in the equatorial direction. If the jet is present in the system, a bump from the cocoon (i.e., the late jet launch is expected to shock and heat-up the ejecta) may only appear in the optical/U-band light curve for a quasi-isotropic ejecta. Our results reveal that the anisotropic energy output of the magnetic dipole radiation and the jet’s ingredient should be well considered in modeling the ejecta emission by considering the energy injection from a magnetar. In addition, the optical/U-band light-curve may disclose the central engine of the burst.
Luminosity Evolution of the Hot Gas in Normal Galaxies from the Near Universe to z = 0.5
Authors: Kim Dong-Woo , Fabbiano Giuseppina
Published: November 2024

We explore the evolution of the ∼107 K hot gas in normal galaxies out to redshift = 0.5 (lookback time = 5 Gyr), using X-ray luminosity functions (XLFs) built from a sample of 575 normal galaxies with z < 0.6 detected in five high-galactic-latitude Chandra wide-field surveys. After estimating the emission due to the hot gas component (reducing the sample to ∼400 galaxies), we compared the XLF in three redshift bins (z = 0.1, 0.3, and 0.5), finding increases in the number of galaxies per unit comoving volume from z = 0.1 to 0.3 and then from z = 0.3 to 0.5. These XLF changes suggest a significant (∼5σ) X-ray luminosity evolution of the hot gas, with L
X,GAS decreasing by a factor of 6–10 in the last 5 Gyr (from z = 0.5 to 0.1). The relative abundance of L
X,GAS ∼ 1041 erg s−1 galaxies at higher z suggests that high-z, moderate-L
X,GAS galaxies may be the optimal target to solve the missing baryon problem. In early-type galaxies, this observational trend is qualitatively consistent with (but larger than) the expected time-dependent mass-loss rate in cooling flow models without active galactic nucleus feedback. In late-type galaxies, the observational trend is also qualitatively consistent with (but larger than) the effect of the z-dependent star formation rate.
Quijote-PNG: Optimizing the Summary Statistics to Measure Primordial Non-Gaussianity
Authors: Jung Gabriel , Ravenni Andrea , Liguori Michele , Baldi Marco , Coulton William R. , Villaescusa-Navarro Francisco , Wandelt Benjamin D.
Published: November 2024

We apply a suite of different estimators to the Quijote-png halo catalogs to find the best approach to constrain Primordial non-Gaussianity (PNG) at nonlinear cosmological scales, up to

k

max

=
0.5

h

Mpc

−
1

. The set of summary statistics considered in our analysis includes the power spectrum, bispectrum, halo mass function, marked power spectrum, and marked modal bispectrum. Marked statistics are used here for the first time in the context of the PNG study. We perform a Fisher analysis to estimate their cosmological information content, showing substantial improvements when marked observables are added to the analysis. Starting from these summaries, we train deep neural networks to perform likelihood-free inference of cosmological and PNG parameters. We assess the performance of different subsets of summary statistics; in the case of

f

NL

equil

, we find that a combination of the power spectrum and a suitable marked power spectrum outperforms the combination of power spectrum and bispectrum, the baseline statistics usually employed in PNG analysis. A minimal pipeline to analyze the statistics we identified can be implemented either with our ML algorithm or via more traditional estimators, if these are deemed more reliable.
Reverberation Mapping of High-mass and High-redshift Quasars Using Gravitational Time Delays
Authors: Golubchik Miriam , Steinhardt Charles L. , Zitrin Adi , Meena Ashish K. , Furtak Lukas J. , Chelouche Doron , Kaspi Shai
Published: November 2024

Mass estimates of black holes (BHs) in the centers of active galactic nuclei (AGNs) often rely on the radius–luminosity relation. However, this relation, usually probed by reverberation mapping (RM), is poorly constrained in the high-luminosity and high-redshift ends due to the very long expected RM lag times. Multiply imaged AGNs may offer a unique opportunity to explore the radius–luminosity relation at these ends. In addition to comprising several magnified images enabling a more efficient light-curve sampling, the time delay between multiple images of strongly lensed quasars can also aid in making such RM measurements feasible on reasonable timescales: if the strong-lensing time delay is, for example, of the order of the expected RM time lag, changes in the emission lines in the leading image can be observed around the same time as the changes in the continuum in the trailing image. In this work we probe the typical time-delay distribution in galaxy-cluster lenses and estimate the number of both high-mass (∼109−1010
M
⊙) and high-redshift (z ≳ 4−12) quasars that are expected to be strongly lensed by clusters. We find that up to several tens of thousands of M
BH ∼ 106–108
M
⊙ broad-line AGNs at z > 4 should be multiply imaged by galaxy clusters and detectable with JWST, hundreds with Euclid, and several thousand with the Roman Space Telescope, across the whole sky. These could supply an important calibration for the BH mass scaling in the early Universe.
Light Echoes of Protoplanetary Disks
Authors: King Austin J. , Bromley Benjamin C.
Published: November 2024

Light echoes offer a means of studying protoplanetary disks, including their geometry and composition, even when they are not spatially resolved. We present a test of this approach applied specifically to optically thick, geometrically flared disks around active stars. Here we adopt stellar parameters of an active M dwarf to calculate light echoes for disks and rings with radii that would produce time delays consistent with TESS short cadence (about 2 minutes) time bins. Our results show successful fits to disk parameters, highlighting the potential effectiveness of this method in the search for protoplanetary disks.
Multiple Periods in the Dwarf Nova GZ Cancri
Authors: Bruch Albert
Published: November 2024

TESS light curves of the SU UMa type dwarf nova GZ Cnc are analyzed. They reveal positive superhumps which persist until long after a superoutburst, variations at the orbital period restricted to outbursts, and transient negative superhumps. But none of these variations are seen simultaneously.
The Upper Atmosphere of Uranus from Stellar Occultations. II. Revised Temperatures in the Upper Stratosphere and Lower Thermosphere
Authors: Saunders William R. , Person Michael J. , Withers Paul , French Richard G. , Tubthong Chanita
Published: November 2024

Measurements made by Voyager 2 during its flyby of Uranus in 1986 found warm stratospheric and hot thermospheric temperatures that cannot be explained by solar energy alone. This contributes to what is known as the “giant planet energy crisis”: there is a fundamental lack of understanding of the energy balance of giant planets in the solar system. Uranus, in particular, has the coldest stratosphere temperatures, the hottest thermospheric temperatures, and the weakest internal heat flux of all four giant planets. Moreover, the Voyager 2 temperature measurements are at odds with many contemporaneous Earth-based stellar occultations. In Paper I, we introduced two updated techniques for reanalyzing these 26 occultations—forward modeling and inversion—and demonstrated them on the 1977 Uranus occultation. This work (Paper II) presents the results of applying these techniques to 26 total Uranus stellar occultations, observed between 1977 and 1996. We find that the lower thermosphere of Uranus is much cooler than the Voyager 2 profiles but slightly warmer than the originally published occultations. We find that the stratosphere of Uranus is nearly isothermal and the stratosphere–thermosphere boundary is much higher in altitude than previously believed. Furthermore, we present a family of new, one-dimensional atmospheric models for Uranus fit to our results. The models suggest that there is a significant source of heat transport or dissipation away from the stratosphere, which we discuss as resulting from gravity-wave activity. We offer our models as new representative profiles and discuss how they improve the understanding of the energy balance of Uranus.
Winter is (not) coming: Acoustic monitoring and temperature variation across important bat hibernacula in Bulgaria
Authors: Toshkova Nia , Kolev Maksim , Deleva Stanimira , Simeonov Tzvetan , Popov Vasil
Published: November 2024

Little is known about the winter bat activity in Bulgaria, which poses challenges in monitoring potential deviations in their behaviour as a consequence of the warming climate. Using passive acoustic monitoring we investigated the winter activity in some of Europe’s largest hibernacula. Our findings reveal cave and species-specific activity patterns. Activity was observed throughout each month of the survey, with distinct peaks on specific days. At one high-elevation site, bat activity was restricted to a single night, while the highest overall activity occurred at the highest elevation site (1325 m). The most active species was Myotis capaccinii (Bonaparte, 1837). While bats were mostly active right after sunset following their usual circadian rhythm, some daytime activity was also observed, including emergence at temperatures as low as -8°C. At sites with sufficient activity data, external temperature emerged as a significant positive predictor of bat activity, with higher temperatures associated with increased activity. Our data also suggest that bats rarely forage near the roost entrances. The observed variability in activity levels between study sites highlights the need for high-resolution, site-specific data rather than broad generalisations.
New records and an updated list of reptiles from Thanh Hoa Province, Vietnam
Authors: Dau Vinh , Hoang Thao , Nguyen Truong , Pham Anh
Published: November 2024

Thanh Hoa Province is located in North Central Vietnam and the Province contains a large area of 393,361.33 hectares of natural forest. A complexity of landforms has given this Province a high level of biodiversity potential. However, the reptile fauna of Thanh Hoa Province is still underestimated. Previous studies documented 111 species of reptiles from this Province.

As a result of our field surveys in Pu Luong and Xuan Lien Nature Reserves, we report five species of reptiles for the first time from Thanh Hoa Province, Vietnam, namely Plestiodon tamdaoensis, Scincella devorator (Scincidae), Elaphe taeniura, Pareas macularius and Pseudoxenodon macrops (Colubridae), with novel data about morphological characteristics. In addition, we provide an updated checklist of 116 species of reptiles from Thanh Hoa Province. The reptile fauna of Thanh Hoa Province also contains a number of species of conservation concern: 22 species listed in the Red Data Book of Vietnam, 22 species listed in the IUCN Red List, 18 species listed in the Vietnam Governmental Decree No. 84; and 21 species listed in CITES appendices.