bluuebunny/crossref_metadata_2025 huggingface dataset:
COMPUTER CRIMES DURING COVID-19 AND MEASURES TO COUNTERACT THEM
Authors: Попов Игорь Вадимович , Дериглазова Анастасия Алексеевна , Дериглазова Ольга Алексеевна
Published: August 2022

Статья посвящена рассмотрению проблем, связанных с повышением компьютерной преступности в период коронавирусной инфекции. Пандемия COVID-19 изменила образ жизни во всех общественных сферах. Эти обстоятельства создали новые проблемы, к одной из которых можно отнести небезопасное использование сети Интернет, информации и информационных технологий в целом. Так, многие организации начали официально работать через Интернет, студенты перешли на дистанционное обучение, которое дается в виде электронного образования. Эти условия создали благоприятную обстановку для компьютерных преступлений. Именно в этот момент киберпреступники увеличили свою активность, использовали различные виды давления, оказывавшего влияние на психологическое состояние людей, что в свою очередь способствовало информационным атакам. Цель данной статьи - проанализировать данные, собранные за период пандемии, по онлайн-мошенничеству и кибербезопасности и выявить основные меры по предотвращению данных преступлений. На основе результатов исследования авторы делают вывод о необходимости разработки стратегий повышения осведомленности пользователей для лучшего обнаружения и предотвращения будущих компьютерных преступлений.

The article is devoted to the consideration of problems related to the increase in computer crime during the coronavirus infection. The COVID-19 pandemic has changed the way of life in all public spheres. These circumstances created new problems that people had to contend with. One of them was the unsafe use of the Internet, information and information technology in general. For example, many organizations have officially started working via the Internet, students have switched to distance learning, which is given in the form of e-education. These conditions have created a favorable environment for computer crimes. It was at this moment that cybercriminals increased their activity, used various types of pressure, which in turn affected the psychological state of people, which in turn leads to the success of information attacks. The purpose of this article is to analyze the data collected during the pandemic on online fraud and cybersecurity to demonstrate how computer crime has increased during the COVID-19 epidemic and to identify the main measures to prevent them. The importance and value of this study is to highlight the evidence of how criminals are exploiting the crisis, as well as the need to develop strategies and raise user awareness to better detect and prevent future computer crimes.
Domperidon: mögliche Gefahr für das Herz
Authors: Gysling Etzel
Published: August 2022

Im Vergleich mit Personen, die kein Domperidon (Motilium® u.a.) erhalten, erleiden diejenigen, die mit Domperidon-Tagesdosen von ≥30 mg behandelt werden, signifikant häufiger einen plötzlichen Herztod oder eine Kammerarrhythmie. Dies ist das Resultat einer systematischen Übersicht, in der überwiegend Studien bei älteren Personen berücksichtigt werden konnten.
Methotrexat stört COVID-19-Impfwirkung
Authors: Gysling Etzel
Published: August 2022

Bei Personen, die zweimal mit dem mRNA-Impfstoff von Pfizer-BioNTech (BNT162b2) geimpft worden waren, wurde die humorale Immunantwort (IgG-Antikörper) bestimmt. Diejenigen, die wegen einer immunvermittelten Krankheit mit Methotrexat behandelt wurden, hatten nur in 62% eine als adäquat beurteilte Immunantwort.
Mehr Kolonkarzinome nach häufiger Antibiotika-Therapie
Authors: Gysling Etzel
Published: August 2022

In einer schwedischen Fall-Kontrollstudie wurden 40'545 Personen erfasst, die an einem kolorektalen Karzinom erkrankt waren. Gemäss einer Analyse verschiedener Daten-banken hatten diejenigen Patientinnen und Patienten, die häufig Antibiotika erhalten hatten, ein höheres Risiko für ein proximales Kolonkarzinom (nicht aber für ein Rektumkarzinom).
Freiheit in der Pandemie
Authors: Gysling Etzel
Published: August 2022

N/A
Andexanet alfa
Authors: Weiler Stefan
Published: August 2022

Andexanet alfa: Mit Andexanet alfa (Ondexxya®) steht ein Medikament zur Verfügung, mit dem die antikoagulierende Wirkung von Faktor-Xa-Hemmern wie z.B. Rivaroxaban (Xarelto®) aufgehoben werden kann. Ob es bei bedrohlichen Blutungen besser wirkt als eine Therapie mit Prothrombinkomplex-Konzentraten, ist noch nicht sicher.
Bempedoinsäure
Authors: Masche Urspeter
Published: August 2022

Bempedoinsäure: Die oral verabreichbare Bempedoinsäure (Nilemdo® ) hemmt die Cholesterinsynthese und kann mit anderen lipidsenkenden Medikamenten zusammen gegeben werden. Sie kann die unerwünschten Wirkungen von Statinen verstärken und führt zum Anstieg der Harnsäurewerte. Bisher sind keine Resultate zu klinischen Endpunkten bekannt.
Surrogatendpunkte
Authors: Gysling Etzel
Published: August 2022

N/A
Risiken der Phytotherapeutika
Authors: Gysling Etzel
Published: August 2022

Pflanzliche Heilmittel sind keineswegs frei von unerwünschten Wirkungen. Wenn sie pharmakologisch aktive Wirkstoffe enthalten, sind dosisabhängige oder «idiosynkratische» Probleme möglich. Daneben spielen die Substitution von anderen Pflanzen, pflanzliche Beimischungen sowie die Kontamination mit rezeptpflichtigen Mitteln eine Rolle.
Welche Medikamente sind obsolet? (Ärztekongress Arosa))
Authors: Gysling Etzel , Weiler Stefan
Published: August 2022

N/A
Herzinfarkte bei rheumatoider Arthritis auch unter Biologika-Therapie gehäuft
Authors: Gysling Etzel
Published: August 2022

Wer an einer rheumatoiden Arthritis leidet, hat ein erhöhtes kardiovaskuläres Risiko. Gemäss einer grossen Kohortenstudie sind koronare Ereignisse auch unter den heute oft verwendeten biologischen Basismedikamenten gehäuft.
Hepatotoxizität von Antimykotika
Authors: Marty Natalie
Published: August 2022

N/A
New Approach for Handling Drop Point Addresses in Mail/ Web Surveys
Authors: Harter Rachel , McMichael Joseph , Deng S. Grace
Published: August 2022

The purpose of this paper is to introduce the concept of drop unit substitution in address-based samples for mail and web surveys. A drop point is a single US Postal Service (USPS) delivery point or receptacle that services multiple businesses, families, or households (USPS, 2017). Residential drop units are the individual housing units served by the drop point address. For the most part, address-based sampling frames list the number of units at a drop point address but will not contain information identifying specific units. Drop units comprise less than 2 percent of all residential addresses in the United States (McMichael, 2017), but they tend to be concentrated in certain large cities. In Queens, New York, for example, drop units constitute 27 percent of residential housing units. The problem with drop units for address-based surveys with mail contacts is that, without names or unit identifiers, there is no way to control which unit receives the various mailings. This limitation leads to distorted selection probabilities, renders the use of cash incentives by mail impractical, and precludes traditional methods for mail nonresponse follow-up, thus resulting in higher nonresponse. Alternatively, excluding drop units results in coverage error, which can be considerable for some subnational estimates. The authors propose a substitution approach when a drop unit is sampled—in other words, replacing the unit with a similar nearby unit in a non–drop point building.
Motivational Factors and Job Performance of Academic Librarians in University Libraries in Ogun State, Nigeria
Authors: Moyosore Sulaimon Abiola , Olumide Okunnu Hamid , Oluwaseyi Monu John , Motunrayo Ekeh Esther
Published: August 2022

Librarians’ performance is getting tasking and duties assigned must be completed at the expected time, through an effective and efficient manner. Librarians’ performance seems to be low in the libraries located in Ogun State, Nigeria where they work. Motivational factors stimulate individuals to put in their best to see to the completion of an assigned duty/task. Literature has not being fully established on how motivational factors influence job performance of librarians in Ogun State, Nigeria. It is on this premise that this study aimed to find out the influence of motivational factors on job performance of librarians in university libraries in Ogun State, Nigeria. Survey research design was used in this research. The population of the study was 201 librarians from the nine university libraries in Ogun State, Nigeria. Total enumeration technique was employed. A validated self-constructed structured questionnaire was used for data collection. A response rate of 61% was achieved. Data collected was analyzed using descriptive The findings revealed descriptively that librarians’ job performance was moderate at an overall mean score of 2.80 on a five point Likert scale with quantity of work output being the least score of 2.69. The extent to which librarians were motivated had an overall mean score of 2.00 which showed a low extent of motivation on a five Likert type scale. The most prevalent motivational factor is compensation (Mean = 2.07) while recognition of librarians was X=1.87, which indicates that librarians in these institutions were not recognized. The study concluded that motivational factors in these university libraries in Ogun State, Nigeria were low, therefore recommending that there should be an increase in the extent of motivation management of the library. Also, there be encouragement to improve performance of librarians in the libraries by the management of the libraries and the institution at large
Circunstancias que limitan la expansión de las TIC
Authors: Martínez Xioyusmar
Published: August 2022

Las Tecnologías de la Información y las Comunicación (TIC) forman parte de la cultura tecnológica que nos rodea y con la que debemos convivir.  Amplían nuestras capacidades físicas y mentales, y las posibilidades de desarrollo social. En el concepto TIC se incluye no solamente la informática y sus tecnologías asociadas, telemática y multimedia, sino también los medios de comunicación de todo tipo: los medios de comunicación social ("más media") y los medios de comunicación interpersonales tradicionales con soporte tecnológico como el teléfono, fax.
Impacto e Incidencias de las TIC
Authors: Piñero Nathalio
Published: August 2022

El conocimiento práctico es una característica distintiva de los ingenieros. Esta relación o impacto que ha generado las TIC en el mundo de la ingeniería ha coadyuvado a crear, planear, implantar, administrar, evaluar y supervisar sistemas de información integrándolos de forma sinérgica a las organizaciones con el objeto de mejorar su competitividad.
Las TIC en Venezuela
Authors: Lionettis-González Yudimar
Published: August 2022

La década de los 90 fue el principio de la transformación de la  raza humana, ya que las nuevas  tecnologías irrumpieron con gran fuerza en la vida hasta lograr que se dependa de ella en su totalidad. Ante de los 90, las tecnología no habían avanzado a pasos agigantados, pero hoy no dejan de evolucionar para simplificar la vida. Pero éstas han contribuido con el desarrollo de la educación o no. Algunos dirán que las TIC llegaron para simplificar la vida de los estudiantes y abrirle una gama de posibilidades para su educación, otros asumen que las mismas atentan contra la calidad de las mismas.
El papel de las TIC en las empresas
Authors: Espinal Alexmir
Published: August 2022

El acercamiento de las TIC a las empresas comienza por la concientización y sensibilización, dando a conocer las oportunidades y beneficios que aportan las TIC y proponiendo soluciones a la medida de las pequeñas y grandes empresas. Las TIC son una herramienta al servicio de la empresa; Son un medio nunca un fin. Incorporar las TIC en las empresas implica muchas veces adoptar nuevas formas de trabajar y a veces también, nuevos modelos de negocio.
La Multidisciplinariedad en el Análisis de Jurisprudencia
Authors: Lionettis González Yudimar
Published: August 2022

El silogismo es definido como aquel procedimiento realizado con el fin de “determinar la verdad o la falsedad de los juicios, estos deberán expresarse mediante afirmaciones y negaciones, que son la consecuencia y el resultado de los vínculos lógicos establecidos entre ellas.”, por lo que debe representarse en un razonamiento perfecto, compuesto por dos premisas y una conclusión. Pero en realidad ¿cuál es la verdadera función del silogismo y la lógica en nuestra profesión como abogados?
Paradigma en la Educación Superior en ARGENTINA
Authors: Ortiz Norelkys
Published: August 2022

A lo largo de los años, la Universidad se convierte en un asunto de Estado, con base en sus principios de igualdad y libertad, quien tendrá gran intervención dentro de ella, empleándola como espacio para debates filosóficos y científicos. De este modo, el Estado impulsa proyectos para garantizar el acceso al sector educativo superior, funcionando como Estado Educativo. A partir de las reformas políticas de 1994, se crean leyes que acompañan a las instituciones de educación superior en la autonomía, sistemas de ingreso, de selección de personal y de evaluación, además de la descentralización y privatización. El sistema de educación superior argentino tiene como propósito la formación científica, profesional, humanística y técnica. Está comprendido entre los institutos de educación superior las universidades e institutos universitarios.
Vascular reconstructions using synthetic prostheses after extended pancreatic resections for locally advanced pancreatic cancer
Authors:   Department of Obstetrics and Gynecology, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania, Bacalbasa Nicolae ,   Department of Visceral Surgery, Center of Excellence in Translational Medicine, Fundeni Clinical Institute, Bucharest, Romania, Balescu Irina ,   Department of Visceral Surgery, Ponderas Academic Hospital, Bucharest, Romania, Stoica Claudia ,   Department of Anatomy, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania,   Department of Surgery, Ilfov County Emergency Hospital, Bucharest, Romania, Pop Lucian ,   Department of Obstetrics and Gynecology National Institute of Mother and Child Care ”Alessandrescu-Rusescu”, Bucharest, Romania, Varlas Valentin ,   Department of Obstetrics and Gynecology, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania,   Department of Obstetrics and Gynecology, Filantropia Clinical Hospital, Bucharest, Romania, Martac Cristina ,   Department of Anesthesiology, Fundeni Clinical Institute, Bucharest, Romania, Voichitoiu Andrei ,   Department of Obstetrics and Gynecology, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania,   Department of Obstetrics and Gynecology National Institute of Mother and Child Care ”Alessandrescu-Rusescu”, Bucharest, Romania, Massawi Tarig ,   Department of Obstetrics and Gynecology, Ilfov County Emergency Hospital, Bucharest, Romania, Gaspar Bogdan ,   Department of Visceral Surgery, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania,   Department of Visceral Surgery, Floreasca Clinical Emergency Hospital, Bucharest, Romania
Published: August 2022

Pancreatic cancer represents one of the most aggressive malignancies affecting patients worldwide which are usually associated with high rates of vascular invasion. In order to achieve radical resection, in such cases extended vascular resections have been proposed with promising results. Once resected, the vascular structures should be reconstructed by direct re-anastomosis if a short length is resected or by placing a graft. The aim of the current paper is to review the most important aspects regarding the vascular reconstructions by using synthetic prostheses.
Do products containing Calendula officinalis have a positive role in treating uterine cervix disorders?
Authors:   Department of Obstetrics and Gynecology, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania, Bacalbasa Nicolae ,   Department of Visceral Surgery, Center of Excellence in Translational Medicine, Fundeni Clinical Institute, Bucharest, Romania, Balescu Irina ,   PhD Student at “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania, Stoica Claudia ,   Department of Anatomy, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania,   Department of Surgery, Ilfov County Emergency Hospital, Bucharest, Romania, Pop Lucian ,   Department of Obstetrics and Gynecology, ”Alessandrescu-Rusescu” National Institute of Mother and Child Care, Bucharest, Romania, Varlas Valentin ,   Department of Obstetrics and Gynecology, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania,   Department of Obstetrics and Gynecology, Filantropia Clinical Hospital, Bucharest, Romania, Martac Cristina ,   Department of Anesthesiology, Fundeni Clinical Institute, Bucharest, Romania, Voichitoiu Andrei ,   Department of Obstetrics and Gynecology, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania,   Department of Obstetrics and Gynecology, ”Alessandrescu-Rusescu” National Institute of Mother and Child Care, Bucharest, Romania
Published: August 2022

Once screening tests and national programs for early detection of cervical cancer have been widely developed, a significant number of patients are diagnosed with preneoplastic lesions at this level; therefore, in such cases, a conservative treatment is feasible, increasing therefore the possibility of fertility preservation and conceiving. Meanwhile, after performing an invasive maneuver at this level attention should be focused on obtaining an adequate healing process at this level. The aim of the current paper is to conduct a literature review regarding the benefits of Calendula officinalis in maximizing the healing process after local invasive procedures at the level of the uterine cervix as well as on human papilloma virus infection prevention.
Does the number of circulating platelets influence the postoperative evolution of endometrial cancer?
Authors:   Department of Visceral Surgery, “Cantacuzino” Clinical Hospital, Bucharest, Romania, Petrea Sorin , Bacalbasa Nicolae ,   Department of Obstetrics and Gynecology, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania,   Department of Visceral Surgery, Center of Excellence in Translational Medicine, Fundeni Clinical Institute, Bucharest, Romania, Balescu Irina ,   PhD Student at “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania, Stoica Claudia ,   Department of Anatomy, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania,   Department of Surgery, Ilfov County Emergency Hospital, Bucharest, Romania, Pop Lucian ,   Department of Obstetrics and Gynecology, ”Alessandrescu-Rusescu” National Institute of Mother and Child Care, Bucharest, Romania, Varlas Valentin ,   Department of Obstetrics and Gynecology, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania,   Department of Obstetrics and Gynecology, Filantropia Clinical Hospital, Bucharest, Romania, Martac Cristina ,   Department of Anesthesiology, Fundeni Clinical Institute, Bucharest, Romania, Voichitoiu Andrei ,   Department of Obstetrics and Gynecology, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania,   Department of Obstetrics and Gynecology, ”Alessandrescu-Rusescu” National Institute of Mother and Child Care, Bucharest, Romania
Published: August 2022

Endometrial cancer is a frequently encountered gynecologic malignancy with increasing incidence; in order to maximize the chances to achieve a long-term survival rate, attention was focused on better identifying the patients at risk to develop more aggressive forms of the disease. The aim of the current paper is to investigate the influence of the number of circulating platelets alone or in association with other biomarkers on the perioperative outcomes of endometrial cancer patients.
Spectrum of neurological manifestations among acute COVID-19 and long COVID-19 – A retrospective observational study
Authors:   Department of Neurology, Ramaiah Medical College and Hospital, India, Dugani Pooja , Mehta Anish ,   Department of Neurology, Ramaiah Medical College and Hospital, India, Furtado Sunil V ,   Department of Neurology, Ramaiah Medical College and Hospital, India, Pradeep R. ,   Department of Neurology, Ramaiah Medical College and Hospital, India, Javali Mahendra ,   Department of Neurology, Ramaiah Medical College and Hospital, India, Acharya Purushottam ,   Department of Neurology, Ramaiah Medical College and Hospital, India, Thyagaraj Vijayashree ,   Department of Internal Medicine, Ramaiah Medical College and Hospitals, India, Srinivasa R. ,   Department of Neurology, Ramaiah Medical College and Hospital, India
Published: August 2022

Objective. Preliminary clinical data indicate that severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection is associated with neurological symptoms. To compare the clinical features, imaging and treatments in patients with and without COVID-19. To compare the mortality and in-hospital stay among patients with and without COVID-19 and negative patients. Materials and methods. In this retrospective, single-center study, we included all the patients who attended the department of neurology with neurologic symptoms with confirmed COVID-19 and long COVID-19 from June 2020 to January 2021. Data on clinical signs, diagnosis, laboratory findings were collected and analyzed from the records for positive patients and compared with neurologic patients without COVID-19 admitted in the same period. Statistical analysis: The mean values between study groups were compared using an independent sample t-test and Mann Whitney u test. Categorical outcomes were compared using the Chi square test. Data was analyzed using coGuide software. Results. Headache was the common neurologic manifestation present in COVID positive patients compared to COVID negative patients (39.13%). There was no statistically significant difference between the two groups in baseline parameters. Laboratory parameters like CRP, Serum Ferritin, LDH, D-dimer, ESR, and IL-6 showed a significant increase in COVID positive patients (P <0.05). In-hospital mortality was more in COVID positive patients than COVID negative patients (P <0.011). Conclusion. The study showed varied neurologic symptoms in COVID patients, with headache as the common symptom. Hospital stay, morbidity, mortality, and inflammatory parameters were more in COVID positive patients compared to COVID negative patients.
Gender, Age and Grade Level Differences in Psychological Factors among Immigrant Francophone Adolescent Learners in the South African School Setting
Authors: Mukuna Kananga Robert
Published: August 2022

Psychological factors are important for boys or girls, depending on age and grade level. This study examines emotional regulation, aggressiveness, empathy, and sympathy, as psychological factors to peer interaction, manifest in adolescence. Eighty-three participants were conveniently and purposively selected at South African schools (N= 83, 52 girls and 31 boys, aged between 14 and 19 years). A psychological factors scale was purposively employed as a data collection instrument. The chi-square results partially confirmed previous results, namely, aggressiveness and sympathy, by gender and age. However, this did not apply to emotional regulation. This study recommended that the South African education system consider aggressiveness a psychological factor, playing a critical role in violence at schools among young adolescents.
Age Differences on Communication Styles among Married Adults in Oyo State, Nigeria
Authors: Adesokan Ruth
Published: August 2022

The study examined the impact of age differences in married adults' communication styles in Oyo state, Nigeria. It adopted a quantitative approach and descriptive survey research design. Six hundred (N=600) married adults were randomly selected using the multi-stage sampling technique. The questionnaires were used for data collection in this study, and the respondents were required to use four points Likert rating scale. The instrument was validated by the experts in Counsellor Education Department, University of Ilorin. Mean, Standard Deviation, and Analysis of Variance were employed as a data analysis technique. The findings revealed that married adults mostly adopted the marital communication styles, which tended more towards the supportive style. The results further indicated that age has an insignificant impact on the communication styles of married adults. It is recommended that married adults adopt the supportive communication style in their marriages to promote understanding, openness, empathy, adaptability, and cooperation between them and their spouses.
Nature and Determinants of Educators’ Attitudes toward Teaching Special Needs Learners in a School of Skills
Authors: Rowan Andre
Published: August 2022

This study explored the nature and determinants of educators’ attitudes toward teaching learners with special needs in a rural school of skills that was formerly an ordinary mainstream school. The study adopted a qualitative Grounded Theory approach within the constructivist epistemology framework. Eleven educators (n=11) teaching technical and academic subjects at the school of skills participated in the study. The semi-structured interview was employed as the sole data collection instrument and the coding principles underlying the Constructivist Grounded Theory were used to analyse data. The findings of the study revealed that educators had a positive attitude toward teaching special needs education at the selected school and highlighted the novel factors determining the educators’ attitudes such as both internal and external factors that motivated this positive attitude. The coping strategies identified by the educators replicated those reported in previous research. Palliative and direct coping actions, as well as an integration of these two were also reportedly employed by some participants. It was concluded that the group-based differentiation of the determinants of attitudes might be useful to influence educators’ attitudes at other special needs schools, or those undergoing a similar transitional process.
Effects of Planting Ratio and Planting Distance on Kadaria 1 Hybrid Rice Seed Production
Authors: Fadzli, A.R. Muhammad Naim , Arif I. Ahmad , H. Shahida , S.S. Elixon , Adam M.M. Azzami , I. Khairol
Published: August 2022

Hybrid rice has the potential to outperform existing inbred rice and was said to have the potential to produce 14-20 % more yield. In response, Malaysia Government has introduced its very own first Hybrid Rice Variety knew as Kadaria 1 developed by MARDI. This is in line with one of the strategies outlined in Dasar Agromakanan Negara (DAN) 2011-2020 as an approach to increasing rice productivity within Malaysia. The next step would be developing our hybrid seed rice production system. Therefore, an experiment to determine the planting ratio and planting distance between 0025A (A)-a hybrid with MR283 (R)-inbreed variety was carried out. Planting ratios studied in this study were 2:4, 2:6, 2:8, and 2:10 while planting distance was 14 x 30 cm, 16 x 30 cm, and 18 x 30 cm. Statistical analyses suggested that yield R, yield A, and panicle number A were significantly affected by planting ratios while yield A was significantly affected by an interaction between planting distance and planting ratios. Panicle number A performed significantly higher at planting ratios of 2:4 compared to 2:10. Yield R shows higher significant performance under ratio 2:6 compared to 2:4 and 2:8. Relatively, yield A performed the best under planting distance of 18 x 30 cm. Furthermore, under this particular planting distance, the planting ratio of 2:10 shows the highest significant figure while 2:8 exhibits statistical parity. Both yield R and yield A were significantly affected by planting ratios and have a significant positive association with each other. Therefore, the planting ratio of 2:10 should be the best since it contributed to significantly highest value for yield A while yield R under 2:10 shows statistical parity with 2:6 which was the highest significant value. In conclusion, the combination of 2:10 with a planting distance of 18 x 30 cm was the best since it shows best potential for both yields A and yield R.
Biocompatible Molybdenum Complexes Based on Terephthalic Acid and Derived from PET: Synthesis and Characterization
Authors: Castañeda-Calzoncit Cesar E. , Cabrera-Munguia Denis A. , Claudio-Rizo Jesús A. , Solís-Casados Dora A. , López-Badillo Claudia M.
Published: August 2022

Metal-organic molybdenum complexes were synthesized by the hydrothermal method using ammonium heptamolybdate as the metallic source, and as the organic ligand terephthalic acid (BDC) or bis(2-hydroxyethyl) terephthalate (BHET), obtained via glycolysis of poly(ethylene)terephthalate (PET). The BDC-Mo and BHET-Mo complexes were characterized by XRD, N2 physisorption, TGA, ATR-FTIR, SEM, XPS and their in vitro biocompatibility was tested by porcine fibroblasts viability. The results show that molybdates (MoO4-2) are coordinated to the carbonyl functional groups of BDC and BHET by urea bonding (-NH-CO-NH-) which is related to their high biocompatibility and high thermal stability. These organic molybdate complexes possess rectangular prism particles made up of rods arrays characteristics of molybdenum oxides (MoO3). The organic complexes BDC-Mo and BHET-Mo do not show to be cytotoxic for porcine dermal fibroblasts growing on their surface for up to 48 h of culture.
GJ 229B: Solving the Puzzle of the First Known T Dwarf with the APOLLO Retrieval Code
Authors: Howe Alex R. , McElwain Michael W. , Mandell Avi M.
Published: August 2022

GJ 229B was the first T dwarf to be discovered in 1995, and its spectrum has been more thoroughly observed than that of most other brown dwarfs. Yet a full spectroscopic analysis of its atmosphere has not been done with modern techniques. This spectrum has several peculiar features, and recent dynamical estimates of GJ 229B’s mass and orbit have disagreed widely, both of which warrant closer investigation. With a separation of tens of astronomical units from its host star, GJ 229B falls near the border of the planet and stellar population formation regimes, so its atmosphere could provide clues to formation processes for intermediate objects of this type. In an effort to resolve these questions, we performed retrievals on published spectra of GJ 229B over a wide range of wavelengths (0.5–5.1 μm) using the open-source APOLLO code. Based on these retrievals, we present a more precise mass estimate of 41.6 ± 3.3 M

J
and an effective temperature estimate of

869

−
7

+
5

K, which are more consistent with evolutionary models for brown dwarfs and suggest an older age for the system of >1.0 Gyr. We also present retrieved molecular abundances for the atmosphere, including replicating the previously observed high CO abundance, and discuss their implications for the formation and evolution of this object. This retrieval effort will give us insight into how to study other brown dwarfs and directly imaged planets, including those observed with JWST and other next-generation telescopes.
Plasma Oscillations and Kinetic Instabilities at Ion Scales in the Expanding Magnetosheath
Authors: Trávníček Pavel M. , Chaston Chris C.
Published: August 2022

We investigate a relationship between a decaying spectrum of magnetic field perturbations and kinetic instabilities in a slowly expanding magnetosheath plasma using two-dimensional hybrid expanding simulations in (X, Y) space. We impose an initial ambient magnetic field
B

0/B
0 = (1, 0, 0), and superimpose a flat spectrum of Alfvénic fluctuations with average amplitudes equal to δ
B = ∣B − B
0∣ ∼ 0.2B
0. The expansion leads to the development of temperature anisotropy A

p
= T

p⊥/T

p∥ > 1 (T

p⊥, T

p∥ are plasma temperatures perpendicular and parallel with respect to
B

0, respectively) and the system becomes unstable with respect to the ion cyclotron and mirror instabilities. The onset of mirror instability in the early stage of the simulation leads to the development of filaments that fill the simulation volume. The filaments represent pressure-balanced structures as they develop in the form of magnetic field (δ
B) perturbations balanced with corresponding density perturbations. Further expansion of the system leads to the thinning of these filaments, which gradually become extremely narrow. The filamentation maintains the power spectral density in δ
B
⊥ at

P

B

⊥

∼

10

−
3

B

0

2

d

p
0

(here d

p0 is the proton inertial length) over the range 0.2 < kd

p0 < 1.1. The filaments remain well developed in the form of density, magnetic field, and temperature anisotropy perturbations at t ∼ 10,000/Ω
p0 (here Ω
p0 is the initial proton gyrofrequency) and slowly dissipate when the expansion continues further.
Starspot Modeling and Flare Analysis on Selected Main-sequence M-type Stars
Authors: Bicz K. , Falewicz R. , Pietras M. , Siarkowski M. , Preś P.
Published: August 2022

We studied the light curves of GJ 1243, YZ CMi, and V374 Peg, as observed by TESS, for the presence of stellar spots and stellar flares. One of the main goals was to model the light curves of the spotted stars to estimate the number of spots, along with their parameters, using our original BASSMAN software. The modeled light curves were subtracted from the observations to increase the efficiency of the flare detection. The flares were detected automatically with our new dedicated software, WARPFINDER. We estimated the presence of two spots on GJ 1243, with a mean temperature of about 2800 K and a spottedness varying between 3% and 4% of the stellar surface, and two spots on V374 Peg, with a mean temperature of about 3000 K and a spottedness of about 6% of the stellar surface. On YZ CMi, we found two different models for two light curves separated in time by 1.5 yr. One of them was a three-spot model, with a mean temperature of about 3000 K and a spottedness of about 9% of the stellar surface. The second was a four-spot model, with a mean temperature of about 2800 K and a spottedness of about 7% of the stellar surface. We tested whether the flares were distributed homogeneously in phase and where there was any correlation between the presence of spots and the distribution of the flares. For YZ CMi, one spot was in anticorrelation with the distribution of the flares, while GJ 1243 shows the nonhomogeneous distribution of flares.
The GIGANTES Data Set: Precision Cosmology from Voids in the Machine-learning Era
Authors: Kreisch Christina D. , Pisani Alice , Villaescusa-Navarro Francisco , Spergel David N. , Wandelt Benjamin D. , Hamaus Nico , Bayer Adrian E.
Published: August 2022

We present GIGANTES, the most extensive and realistic void catalog suite ever released—containing over 1 billion cosmic voids covering a volume larger than the observable universe, more than 20 TB of data, and created by running the void finder VIDE on QUIJOTE’s halo simulations. The GIGANTES suite, spanning thousands of cosmological models, opens up the study of voids, answering compelling questions: Do voids carry unique cosmological information? How is this information correlated with galaxy information? Leveraging the large number of voids in the GIGANTES suite, our Fisher constraints demonstrate voids contain additional information, critically tightening constraints on cosmological parameters. We use traditional void summary statistics (void size function, void density profile) and the void autocorrelation function, which independently yields an error of 0.13 eV on ∑ m

ν
for a 1 h
−3 Gpc3 simulation, without cosmic microwave background priors. Combining halos and voids we forecast an error of 0.09 eV from the same volume, representing a gain of 60% compared to halos alone. Extrapolating to next generation multi-Gpc3 surveys such as the Dark Energy Spectroscopic Instrument, Euclid, the Spectro-Photometer for the History of the Universe and Ices Explorer, and the Roman Space Telescope, we expect voids should yield an independent determination of neutrino mass. Crucially, GIGANTES is the first void catalog suite expressly built for intensive machine-learning exploration. We illustrate this by training a neural network to perform likelihood-free inference on the void size function, giving a ∼20% constraint on Ωm. Cosmology problems provide an impetus to develop novel deep-learning techniques. With GIGANTES, machine learning gains an impressive data set, offering unique problems that will stimulate new techniques.
Radio Emission from UV Cet: Auroral Emission from a Stellar Magnetosphere
Authors: Bastian T. S. , Cotton W. D. , Hallinan G.
Published: August 2022

The archetypical flare star UV Cet was observed by MeerKAT on 2021 October 5–6. A large radio outburst with a duration of ∼2 hr was observed between 886 and 1682 MHz, with a time resolution of 8 s and a frequency resolution of 0.84 MHz, enabling sensitive dynamic spectra to be formed. The emission is characterized by three peaks containing a multitude of broadband arcs or partial arcs in the time-frequency domain. In general, the arcs are highly right-hand circularly polarized. At the end of the third peak, brief bursts occur that are significantly elliptically polarized. We present a simple model that appears to be broadly consistent with the characteristics of the radio emission from UV Cet. Briefly, the stellar magnetic field is modeled as a dipole aligned with the rotational axis of the star. The radio emission mechanism is assumed to be due to the cyclotron maser instability, where x-mode radiation near the electron gyrofrequency is amplified. While the elliptically polarized bursts may be intrinsic to the source, rather stringent limits are imposed on the plasma density in the source and along the propagation path. We suggest that the elliptically polarized radiation may instead be the result of reflection on an overdense plasma structure at some distance from the source. The radio emission from UV Cet shares both stellar and planetary attributes.
Dissecting Nearby Galaxies with piXedfit. II. Spatially Resolved Scaling Relations among Stars, Dust, and Gas
Authors: Abdurro’uf  , Lin Yen-Ting , Hirashita Hiroyuki , Morishita Takahiro , Tacchella Sandro , Wu Po-Feng , Akiyama Masayuki , Takeuchi Tsutomu T.
Published: August 2022

We study spatially resolved scaling relations among stars, dust, and gas in ten nearby spiral galaxies. In a preceding paper, we have derived spatially resolved properties of the stellar population and dust by a panchromatic spectral energy distribution fitting using piXedfit. Now, we investigate resolved star formation (

Σ

H

2

–ΣSFR–Σ*) and dust scaling relations. While the relations with all subgalactic regions of the galaxies are reasonably tight (σ ≲ 0.3 dex), we find that most of the scaling relations exhibit galaxy-to-galaxy variations in normalization and shape. Only two relations of Σdust–Σgas and Σdust–

Σ

H

2

do not show noticeable galaxy-to-galaxy variations among our sample galaxies. We further investigate the correlations among the scaling relations. We find significant correlations among the normalization of the

Σ

H

2

–ΣSFR–Σ* relations, which suggest that the galaxies with higher levels of resolved H2 fraction (

f

H

2

) tend to have higher levels of resolved star formation efficiency (SFE) and specific star formation rate (sSFR). We also observe that the galaxies with higher levels of resolved dust-to-stellar mass ratios tend to have higher levels of resolved sSFR, SFE, and

f

H

2

. Moreover, we find that the galaxies with higher global sSFR and less compact morphology tend to have higher levels of the resolved sSFR, SFE, and

f

H

2

, which can explain the variations in the normalization of the

Σ

H

2

–ΣSFR–Σ* relationships. Overall, we observe indications of the contributions of both global and local factors in governing the star formation process in galaxies.
The Physical Properties of Low-redshift FeLoBAL Quasars. II. The Rest-frame Optical Emission Line Properties
Authors: Leighly Karen M. , Choi Hyunseop , DeFrancesco Cora , Voelker Julianna , Terndrup Donald M. , Gallagher Sarah C. , Richards Gordon T.
Published: August 2022

We report the results of an analysis of the Hβ emission line region of a sample of 30 low-redshift (z < 1) iron low-ionization broad absorption line quasars (FeLoBALQs). Eleven of these objects are newly classified as FeLoBALQs. A matched sample of 132 unabsorbed quasars was analyzed in parallel. The emission lines showed the well-known anticorrelation between the [O iii] and Fe ii emission. Using a summary statistic called E1 to quantify this anticorrelation, we found that while the distribution of E1 for the unabsorbed quasars has a single peak, the FeLoBALQs have a bimodal shape in this parameter. Previous studies have shown that the line emission properties of BAL and non-BALQs are consistent; therefore, the difference in the Hβ region emission between FeLoBALQs and unabsorbed quasars is a new result. The two populations of FeLoBALQs are characterized by low and high bolometric luminosities and Eddington ratios. Some previous studies have suggested that BALQs are high accretion rate objects and therefore the discovery of the low accretion rate branch of FeLoBAL quasars was unexpected. We also found that the Hβ FWHM is systematically broader among the FeLoBALQs, implying a higher inclination viewing angle or a dearth of low velocity line emitting gas.
Geodesic Model of HF QPOs Tested for Black Holes in Spacetimes Reflecting the Effect of Surrounding Dark Matter
Authors: Stuchlík Zdeněk , Vrba Jaroslav
Published: August 2022

Using the simple but robust model of a shell of dark matter (DM) around a Schwarzschild black hole (BH), represented by the mass ratio of the shell and BH ΔM/M, the shell extension Δr
s and its inner radius r
s, we study the influence of DM on the spacetime structure and geodesic motion, and provide a classification of the BH+DM shell spacetimes according to the properties of the stable circular geodesics governing Keplerian disks. We focus our attention on the epicyclic motion around circular geodesics that can be related to observational phenomena in X-ray radiation from Keplerian accretion disks, assumed to be influenced by the DM shell only gravitationally. We give the frequencies of the orbital and epicyclic motions and discuss their properties in terms of the parameters governing the DM shell. Using the frequencies in relevant variants of the standard geodesic model of high-frequency quasiperiodic oscillations (HF QPOs), we test the role of DM by fitting the HF QPO data from some microquasars and active galactic nuclei with supermassive BHs where no variant of the geodesic model applied in the standard vacuum BH background is able to explain the data. We thus provide a robust review of the applicability of the geodesic model of HF QPOs, and also provide limits on the amount of DM around a BH. We demonstrate that the geodesic model could be well applied to most observations of active galactic nuclei, with strong restrictions on the amount of invisible matter around BHs.
An AGN with an Ionized Gas Outflow in a Massive Quiescent Galaxy in a Protocluster at z = 3.09
Authors: Kubo Mariko , Umehata Hideki , Matsuda Yuichi , Kajisawa Masaru , Steidel Charles C. , Yamada Toru , Tanaka Ichi , Hatsukade Bunyo , Tamura Yoichi , Nakanishi Kouichiro , Kohno Kotaro , Lee Kianhong , Matsuda Keiichi , Ao Yiping , Nagao Tohru , Yun Min S.
Published: August 2022

We report the detection of an ionized gas outflow from an X-ray active galactic nucleus hosted in a massive quiescent galaxy in a protocluster at z = 3.09 (J221737.29+001823.4). It is a type-2 QSO with broad (W
80 > 1000 km s−1) and strong (

log
(

L

[
OIII
]

/erg s−1) ≈ 43.4) [O iii]λ
λ 4959,5007 emission lines detected by slit spectroscopy in three-position angles using Multi-Object Infra-Red Camera and Spectrograph (MOIRCS) on the Subaru telescope and the Multi-Object Spectrometer For Infra-Red Exploration (MOSFIRE) on the Keck-I telescope. In the all slit directions, [O iii] emission is extended to ∼15 physical kpc and indicates a powerful outflow spreading over the host galaxy. The inferred ionized gas mass outflow rate is 22 ± 3 M
⊙ yr−1. Although it is a radio source, according to the line diagnostics using Hβ, [O ii], and [O iii], photoionization by the central QSO is likely the dominant ionization mechanism rather than shocks caused by radio jets. On the other hand, the spectral energy distribution of the host galaxy is well characterized as a quiescent galaxy that has shut down star formation several hundred Myr ago. Our results suggest a scenario that QSOs are powered after the shutdown of the star formation and help complete the quenching of massive quiescent galaxies at high redshift.
A Multifluid Dust Module in Athena++: Algorithms and Numerical Tests
Authors: Huang Pinghui , Bai Xue-Ning
Published: August 2022

We describe the algorithm, implementation, and numerical tests of a multifluid dust module in the Athena++ magnetohydrodynamic code. The module can accommodate an arbitrary number of dust species interacting with the gas via aerodynamic drag (characterized by the stopping time), with a number of numerical solvers. In particular, we describe two second-order accurate, two-stage, fully implicit solvers that are stable in stiff regimes, including short stopping times and high dust mass loading, and they are paired with the second-order explicit van Leer and Runge–Kutta gas dynamics solvers in Athena++, respectively. Moreover, we formulate a consistent treatment of dust concentration diffusion with dust back-reaction, which incorporates momentum diffusion and ensures Galilean invariance. The new formulation and stiff drag solvers are implemented to be compatible with most of the existing features of Athena++, including different coordinate systems, mesh refinement, and shearing box and orbital advection. We present a large suite of test problems, including the streaming instability in linear and nonlinear regimes, as well as local and global settings, which demonstrate that the code achieves the desired performance. This module will be particularly useful for studies of dust dynamics and planet formation in protoplanetary disks.
Osaka Feedback Model. II. Modeling Supernova Feedback Based on High-resolution Simulations
Authors: Oku Yuri , Tomida Kengo , Nagamine Kentaro , Shimizu Ikkoh , Cen Renyue
Published: August 2022

Feedback from supernovae (SNe) is an essential mechanism that self-regulates the growth of galaxies, and a better model of SN feedback is still needed in galaxy-formation simulations. In the first part of this paper, using an Eulerian hydrodynamic code Athena++, we find the universal scaling relations for the time evolution of momentum and radius for a superbubble, when the momentum and time are scaled by those at the shell-formation time. In the second part of this paper, we develop a SN feedback model based on the Athena++ simulation results utilizing Voronoi tessellation around each star particle, and implement it into the GADGET3-Osaka smoothed particle hydrodynamic code. Our feedback model was demonstrated to be isotropic and conservative in terms of energy and momentum. We examined the mass/energy/metal loading factors and find that our stochastic thermal feedback model produced galactic outflow that carries metals high above the galactic plane but with weak suppression of star formation. Additional mechanical feedback further suppressed star formation and brought the simulation results into better agreement with the observations of the Kennicutt–Schmidt relation, with all the results being within the uncertainties of observed data. We argue that both thermal and mechanical feedback are necessary for the SN feedback model of galaxy evolution when an individual SN bubble is unresolved.