bluuebunny/crossref_metadata_2025 huggingface dataset:
Morphological, optical and structural properties of pure, zinc and magnesium doped TiO2 nanoparticles for solar cell devices
Authors:   Assistant Professor, Department of Biotechnology, Vivekanandha college of Engineering for Women (Autonomous), Tiruchengode, Tamil Nadu, India, Manojkumar M. S. , Venkatesan S. ,   Professor, Department of Petro Chemical Engineering, University College of Engineering, BIT campus, Tiruchirappalli, Tamil Nadu, India, Pandiarajan S ,   Assistant Professor, Chemical Engineering, Nandha Engineering College, Erode, Tamil Nadu, India
Published: March 2022

Zn2+and Mg2+ions doped Titanium dioxide had been synthesized using a hydrothermal method at 120°C with an annealing temperature at 450°C, including individual Zn2+and Mg2+ ions. In addition, impact of these doping metal ions on the crystallization and phase transition of the Titanium dioxide nanoparticles were discussed by X-Ray Diffraction spectroscopy, Scanning Electron Microscopy, Fourier Transform Infra-Red spectroscopy, UV-Vis spectroscopy and Photo-Luminescence spectroscopy and also by photocatalytic measurements. The presence of anatase type structure in Titanium dioxide nanopowders with high crystallinity and high phase stability in spite of annealing at 450°C significantly specified that the dopants might prevent densification and crystallite growth in Titanium dioxide nanophase by on condition with different boundaries. Furthermore, with a suitable amount of Zn and Mg dopants, anatase grain size of Titanium dioxide powders was reduced. The band gap energy values of Zn2+ and Mg2+ ions doped nano-Titanium dioxide were lower than the pure nano-Titanium dioxide and they exhibited a red shift in the visible region
Production of PbO thin film using Silar method and electronıc and interface properties of Pb/PbO/p-Si MIS contacts
Authors:   Batman University, School of Graduate Studies, Branch of Physics, Batman, Turkey, Erdem E. , Asubay S. ,   Batman University, School of Graduate Studies, Branch of Physics, Batman, Turkey, Gullu O. ,   Batman University, Faculty of Sciences and Arts, Department of Physics, Batman, Turkey
Published: March 2022

In this paper, using SILAR thin film technique, which is low cost and is easy to control, the lead oxide (PbO) thin film was grown onto both microscope glass and inorganic semiconductor silicon (Si) wafer after appropriate chemical cleaning processes. The coating stage was performed by keeping the solution at 80 ℃. After forming a PbO thin film on the silicon semiconductor, Pb metal was evaporated onto its upper surface. Optical, morphological and structural properties of the PbO thin film formed on glass were investigated. The electrical and interface characteristics of the Pb/PbO/p-Si MIS Schottky diode were investigated in the dark by using current-voltage (I-V), capacity-voltage (C-V) and conductance-voltage (G-V) in 10kHz-2MHz frequency range and capacity-frequency (C-f) characteristics in 1kHz-10MHz frequency range.
Synthesis of hybrid nanocomposites by sol-gel method and their characterizations
Authors:   Laboratory of Physics of Materials and Nanomaterials Applied at Environment (LaPhyMNE), Gabes University, Faculty of Sciences in Gabes, 6072, Tunisia, Ben Mansour N. , Khouqeer G. ,   Department of Physics, College of Sciences, Imam Mohammad Ibn Saud University (IMSIU), Riyadh 11623, Saudi Arabia, Abdel All N. ,   Physics Department, Assiut University, Assiut 71516, Egypt, El Ghoul J. ,   Laboratory of Physics of Materials and Nanomaterials Applied at Environment (LaPhyMNE), Gabes University, Faculty of Sciences in Gabes, 6072, Tunisia
Published: March 2022

In this work, we report the synthesis of different hybrid nanocomposites by sol-gel method. Therefore, we used picric acid as a catalyst to incorporate the nanopowder oxides of nickel (NiO), copper (CuO) and manganese (MnO) in the porous carbon matrix based on pyrogallol and formaldehyde (PF). After a drying and heat treatment for two hours at 650 °C pyrolysis temperature, the obtained materials have been characterized by different structural and electrical techniques. The X-ray diffraction (XRD) spectra show that the incorporation of inorganic nanoparticles improved the crystallization of different nanocomposites with the existance of a graphite phase. The transmission electron microscopy (TEM) images reveal that the graphite nanoparticles size depends to the incorporated inorganic oxide. From the electrical studies, we notice that electrical conduction is linked to the presence of graphite nanoparticles. The variation of the electrical conductivity and the relaxation time with the measurement temperature, ranging between 80 and 300 K, explain the effect of the hopping conduction mechanism in these nanocomposites.
Tin sulfide-based nanocomposite: synthesis and study of structural, morphological and optical properties
Authors:   Centre for Nanoscience and Nanotechnology, Sathyabama Institute of Science and Technology, Chennai 600119, Tamil Nadu, India, Murugadoss G. , Kumar M. R. ,   Institute of Natural Science and Mathematics, Ural Federal University, Yekaterinburg 620002, Russia, Kathalingam A. ,   Millimeter-wave Innovation Technology Research Center, Dongguk UniversitySeoul, Seoul 04620, Republic of Korea, Jothiramalingam R. ,   Department of chemistry, College of science, King Saud University, PO Box 2455, Riyadh 11451, Kingdom of Saudi Arabia, Al-Lohedan H. ,   Department of chemistry, College of science, King Saud University, PO Box 2455, Riyadh 11451, Kingdom of Saudi Arabia, Al-Dhayan D. M. ,   Department of chemistry, College of science, King Saud University, PO Box 2455, Riyadh 11451, Kingdom of Saudi Arabia
Published: March 2022

A facile one-step chemical method has been developed for synthesize of SnS-based nanocomposites. Herein, we have prepared a series of SnS based nanocomposites such as SnS/CdO, CdO/SnS, SnS/PbO, PbO/SnS, SnS/PbS and PbS/SnS. The synthesized nanocomposites were characterized using X-ray diffraction (XRD), transmission electron microscope (TEM), Fourier transform infrared (FT-IR), UV-visible and Photoluminescence (PL) spectroscopy. The obtained results are discussed in details. Significant PL sifting observed for SnS based nanocomposites. The role of the various compounds added with SnS is mainly for tunning the optical emission of the SnS. The obtained visible light emission of the SnS-based nanocomposites can be used in the optoelectronic applications.
Ab initio molecular-dynamics simulations of electronic structures and characteristics of Cu/SiO2/Pt memristive stack
Authors:   School of Information Engineering, Nanchang Hangkong University, 330063, Nanchang, P. R. China, Peng Y. X. , Wang L. ,   School of Electrical and Optical Engineering & School of Microelectronics, Nanjing University of Posts and Telecommunications, 210003, Nanjing, P. R. China
Published: March 2022

Memristor, as the fourth passive fundamental circuitry element, has recently received considerable attention due to its appealing prospect for in-memory computing and neuromorphic computing applications. Numerous memristive materials, such as metal oxides, chalcogenides, amorphous silicon, carbon, and polymer nanoparticle materials, have been under intensive research. Within the memristive families, metal oxides attain more attention due to their great scaling, fast switching speed, low power consumption, and long endurance. However, the memristive mechanism and electronic characteristics of the metal oxides still remain controversial. To address this issue, we here investigated the electronic structure and electronic characteristics of a typical memristive stack (i.e., Cu/SiO2/Pt) based on newly developed density functional theory and ab initio molecular-dynamics simulations. Calculated results reveal that the energy barriers required to be overcome for Cu ions to diffuse through Cu electrode, SiO2 active layer, and Pt electrode, are 0.6 eV, 1 eV, and 1.63 eV, respectively. This results in an overall barrier of ～ 1.63 eV for entire Cu/SiO2/Pt stack. Both ion and electron conductivities of the Cu/SiO2/Pt stack are found temperature dependent, while the electron conductivities arising from calculated density of states and band structures, is much higher than the ion conductivity. This obviously facilitates the diffusion of Cu ions and thus can explain the memristive behaviour of the studied device.
Estilo docente, clave para una menor percepción de violencia en educación física
Authors: Valero-Valenzuela A. , Manzano-Sánchez D. , Alekseev-Trifonov S. , Merino-Barrero J.A. , Belando-Pedreño N. , Moreno-Murcia J.A.
Published: March 2022

Este estudio tuvo como objetivo comprobar si la menor percepción de violencia escolar en adolescentes se asociaba con perfiles motivacionales más autodeterminados y con el estilo interpersonal del docente de Educación Física. Participaron 452 estudiantes de entre 13 y 16 años (M = 14.7; DT = 1.05). Tras la recogida de datos, se realizó un análisis multivariante (MANOVA) y un análisis de perfiles, confirmándose la existencia de tres perfiles motivacionales: “alta motivación autodeterminada”; “moderada” y “baja motivación autodeterminada”. Como principales resultados se observa que el grupo con alta motivación autodeterminada presentó valores inferiores en la percepción de violencia escolar y superiores en el estilo docente de apoyo a la autonomía y la satisfacción de las necesidades psicológicas básicas. Se concluye que una menor percepción de la violencia escolar en los estudiantes puede venir dada por la utilización de un estilo interpersonal del docente de Educación Física de apoyo a la autonomía.
School Closure Versus Targeted Control Measures for SARS-CoV-2 Infection
Authors: Rotevatn Torill A. , Elstrøm Petter , Greve-Isdahl Margrethe , Surén Pål , Johansen Tone Kristin Bjordal , Astrup Elisabeth
Published: March 2022

OBJECTIVES

To compare effects of school closures with effects of targeted infection prevention and control (IPC) measures in open schools on SARS-CoV-2 infection rates in students.

METHODS

We conducted interrupted time-series analyses to compare trends in infection rates in grades 1–10 in 7 boroughs in Oslo, Norway, between February 15 and April 18, 2021. All schools at all levels had implemented strict IPC measures. While grades 1–4 attended school throughout the study period, school closures were implemented for grades 5–10 from March 17. We obtained individual level data from nationwide registries.

RESULTS

A total of 616, 452, and 446 students in grades 1–4, 5–7 and 8–10, respectively, were registered with a positive SARS-CoV-2 test during the study period, when the α-variant dominated. A statistically significant reduction in postintervention trends was observed for grades 1–4 (coefficient −1.26; 95% confidence interval (CI), −2.44 to −0.09). We did not observe any statistically significant between-group differences in postintervention trends between grades 1–4 and 5–7 (coefficient 0.66; 95% CI, −1.25 to 2.58) nor between grades 1–4 and 8–10 (coefficient −0.63; 95% CI, −2.30 to 1.04). Findings indicate that keeping schools open with strict IPC measures was equally effective as school closures on reducing student infection rates.

CONCLUSIONS

School closure was not more effective than targeted IPC measures in open schools in reducing student infection rates. Our findings suggest that keeping schools open with appropriate IPC measures should be preferred over school closures, considering the negative consequences closures have on students.
Modernisasi Penafsiran Al-Quran Dalam Tafsir Al-Azhar Karya Buya Hamka
Authors: Firdausiyah Umi Wasilatul
Published: March 2022

The Discourse of this research, focuses on the modernization of the interpretation of the Qur’an from the perspective of the Tafsir al-Azhar by Buya Hamka. The purpose of the study, to reveal the impact of modernization on the realm of interpretation of the Qur’an and to determine the development of the interpretation of the Qur’an by looking at the extent to which the Tafsir al-Azhar can be categorized in the realm of modernization of the interpretation of the Qur’an. This research is in the form of qualitative  research, the type of library research is assisted by data analysis in the form of descriptive analysis, and to determine the significance of Tafsir al-Azhar, the author uses the interpretation theory of the interpretation of the Qur’an Nasr Hamid Abu Zayd, in order to be able to see the representation of the text of Tafsir al-Azhar has any reference to modernization or not, and is equipped with theorical triangulation as a test of the validity of the data. The results of the study state that the existence of Tafsir al-Azhar is representation of modern interpretation because of ist efforts to contextualize the text with events that are currently happening, driven by the emergence of modernization, and modernization of the interpretation of the Qur’an is also an implementation of the involvement of interpretation with modern problems, as the interpretation of Buya Hamka in the Tafsir al-Azhar which discusses a lot of modern problems. This is an attempt by the mufasir to maintain the Qur’an which should indeed be salih likulli zaman wa makan.
EPISTEMOLOGI TAFSIR MUHAMMADIYAH DALAM TAFSIR AT-TANWIR
Authors: Taufiq Muhammad
Published: March 2022

Epistemologi tafsir merupakan disiplin ilmu yang berusaha untuk mengungkap pertanyaan-pertanyaan mendasar tentang teori ilmu pengetahuan tentang tafsir. Bagaimana sebuah karya tafsir dapat diuji kebenarannya berdasarkan norma epistemik. Artikel ini mencoba mengeksplor karya tafsir Muhammadiyah merupakan salah satu karya dari sederet karya-karya tafsir kontemporer yang lahir di zaman sekarang. Visi, gerakan dan wacana yang dikembangkan tafsir at-Tanwir adalah tafsir responsif atas masalah yang terjadi dalam kehidupan masyarakat. Penelitian ini menggunakan studi kepustakaan dengan metode deskriptis analitis mengungkap epistemologi tafsir karya Muhammadiyah, yang berjudul  Tafsir At-Tanwir. Tafsir ini disusun secara kolektif oleh kader Muhammadiyah yang berasal dari berbagai perguruan Tinggi Muhammadiyah dan tokoh Muhammadiyah dari Perguruan Tinggi Islam di Indonesia. Tafsir ini bukanlah kompilasi terhadap kitab-kitab tafsir yang ada, namun memiliki manhaj tersendiri sehingga tafsir ini menjawab persoalan yang terjadi dengan mengacu pada pola tarjih dalam Muhammadiyah. Dari sisi metode tafsir ini menggabungkan beberapa metode seperti tahlili, muqarran, dan tematik. Sumber tafsir yang digunakannya sangat beragam seperti sumber al-Qur>an, hadis, asba>b an-nuzu>l, ijtihad mufassir, kitab-kitab tafsir klasik seperti al-Maraghi dan Ibnu katsir yang dijadikan sebagai landasan awal dalam menafsirkan ayat Al-Qur’an. tafsir ini memberikan kontribusi terhadap penafsiran Muhammadiyah yang masih sangat minim sejak berdirinya Muhammadiyah tahun 1912.
EKOLOGI KELUARGA BERBASIS AL-QURAN DAN UPAYA PENCEGAHAN WOMEN TRAFFICKING
Authors: Febriany Ina Salma
Published: March 2022

Tulisan ini membahas tentang konsep ekologi keluarga berbasis al-Quran dalam upaya  pencegahan perilaku perdagangan perempuan yang akhir-akhir ini marak terjadi.Praktik perbudakan perempuan dalam tinjauan sejarah sekarang muncul dalam kemasan modern, yakni perdaganganperempuan. Ini tidak saja didorong oleh faktor kejahatan kemanusiaan dalam bentuk komoditas seks dan eksploitasi perempuan, namun juga didorong oleh faktor internal, yakni minimnya fungsi ekologi keluarga dalam menciptakan lingkungan yang kondusif, baik sosial, pendidikan, hukum, maupun ekonomi . Fenomena ini menuntut solusi. Dalam hal ini penulis menawarkan konsep ekologi keluarga berbasis al-Qur’an sebagai alternatif. Untuk melihat persoalan ini, penelitian ini menggunakan pendekatan kualitatif melalui metode tafsir tematik dengan teknis analis data deskriptif-analitis. Hasil penelitian ini menunjukkan bahwa konsep ekologi keluarga berbasis al-Quran menawarkan solusi konstruktif bagi pencegahan women trafficking. Kata kunci utama dalam konsep ini adalah nilai-nilai ketuhanan (spiritual dan moral), nilai-nilai kemanusiaan, kebersamaan, keadilan, kesetaraan, saling keterkaitan, kepemimpinan, kemandirian, profesionalitas, dan kebijakan pemerintah.Kata kunci ini merupakan solusi konstruktif bagi pencegahan women trafficking dalam lima level ekologi keluarga. Ia dilakukan secara sistematis, kolektif, bertumpu pada nilai-nilai, serta adanya kebijakan pemerintah yang berpihak pada perempuan.
PENDEKATAN ILMU BALAGHAH DALAM SHAFWAH AL-TAFÂSÎR KARYA ‘ALI AL-SHABUNY
Authors: Rifai Juhdi
Published: March 2022

Artikel ini mengkaji pendekatan ilmu balaghah dalam kitab Shafwah al-Tafâsir karya Imam ‘Ali al-Shabuniy. Salah satu bentuk i’jâz al-Qur’an terletak pada susunan yang fashih dan mengandung unsur Balaghah. Karena itu, diperlukan pendekatan ilmu Balaghah dalam menafsirkan al-Qur’an. Kebutuhan ilmu Balaghah untuk menafsirkan al-Qur’an sudah disadari pada awal perkembangan Islam. Kitab Shafwah al-Tafasir memiliki keunikan tersendiri ketika menggunakan Ilmu Balaghah dalam menjelaskan.  Al-Shabuni menyajikannya secara sederhana dan sistematis. Untuk mendalami pendekatan ilmu balaghah dalam kitab Shafwah al-Tafâsir, penelitian ini mengunkan metode kualitatif deskriptif, dengan mengambil surat al-Fatihah sebagai objek kajiannya. Hasil penelitian menunjukkan bahwa al-Shabuni ketika menafsirkan surah al-Fatihah, menyebutkan beberapa unsur ilmu Balagha, yaitu: ada ungkapan jumlah khabriyah, tetapi yang dimaksud adalah jumlah insyâiyyah; iltifat; taqdîm dan ta’khîr, yang berfungsi sebagai qahr atau hashr ; alif lam pada lafadz al-hamdu bermakna li al-istighrâq ; jâr-majrûr pada lafadz lillâhi bermakna ikhtishah (pengkhususan); ada lafadz yang dibuang mahdzûf ; adanya bentuk tashrîh setelah ibhâm; Ada bentuk fi’il amr (kata kerja perintah) yang bermakna terus-menerus dan selamanya; dan Saja’ mutawâzy.
al-La'alli al-Mashnu'ah fi al-Ahadis al-Maudhu'ah
Authors: Jendri Jendri
Published: March 2022

Tulisan ini merupakan kajian tentang hadis al-Maudhu>’ dalam kitab al-La’alli al-Mashnu>’ah al-Aha>dis al-Maudhu>’ah karya al-Suyuthi. kitab ini menjelaskan tentang hadis-hadis al-Maudhu>’ dan secara taklangsung memberikan komentar atau kritikan terhadap al-Jauzi yang sangat memuat hadis-hadis Maudhu> dalam kitabnya. Adapun tujuan yang membuat as-Suyuthi dalam kegelisahannya akademisnya yaitu terdapat hadis-hadis shahih, hasan, dan selainnya bahkan ada beberapa hadis dha’if yang belum dicantumkan kedalam kitab al-Maudhu>’at- Ibnu al-Jauzi. Oleh karena as-Sayuthi mencoba memberikan kontribusi melalui kitabnya itu dengan meringkas kitab al-Jauzi ini dan memberikan kritikan-kritikan ataupun komentar dengan merujuk berbagai kitab seperti al-Ta>rikh, al-Kha>tibi, al-Ha>kim, al-Ka>mil, Ibnu ‘A>di, al-Du’afa’, Afrad al- Da>rul Quthni. Oleh karena itu diperlukan analis yang lebih terkait dengan hadis Maudhu> tersebut. Penelitian ini  menggunakan jenis penelitian kepustakaan (library research). Teknik pengumpulan data yang digunakan yaitu mengambil langsung dari buku-buku yang berkaitan dengan hadis-hadis Maudhu>’ dan keterkaitan dengan penelitian yang dilakukan. Dalam pengolahan data menggunakan metode analisis isi (content analisis). Sedangkan dalam menarik kesimpulan menggunakan metode deduktif dimana data yang terkumpul diolah secara selektif dan sistematis kemudian ditariklah kesimpulan khusus yang merupakan hasil dari penelitian. Hasil dari penelitian ini menunjukan bahwa Secara umum kitab ini bisa digolongkan sebagai menghimpun hadis-hadis maudhu>’ disertai dengan komentar-komentar dengan mengutip kitab hadis. Dalam kitab tersebut as-Suyuthi memberikan komentar-komentar di dalamnya, dengan  menggunakan pendapat-pendapat ulama hadis yang lain. Sehingga dikatakan kitab al-Suyuthi dikatakan al-Kubra>, sedangkan kitab al-Jauzi dikatakan al-Sugra>.
Figur Nabi Yusuf AS Bagi Kaum Milenial Dalam Menghadapi Era 4.0
Authors: Amril Dapit , Hafizzullah Hafizzullah
Published: March 2022

Era 4.0 menuntut umat manusia, terutama generasi milenial untuk terbuka dengan berbagai kemajuan teknologi. Mereka dihadapkan dengan satu masa yang menuntut manusia untuk berlomba-lomba dalam mengembangkan skill dan intelektual, sehingga hal-hal spiritual seringkali terabaikan. Terabaikannya unsur-unsur spiritual membuat seseorang menjadikan unsur materi sebagai tolak ukur kesuksesan. Berkaca dari kisah Nabi Yusuf terutama yang diceritakan secara lengkap dalam surat Yusuf, penulis ingin kembali menghadirkan sosok figur seorang pemuda yang mampu menghadapi berbagai masalah ke dalam kehidupan era 4.0 sekarang ini. Untuk mencapai tujuan tersebut, penulis menggunakan metode kualitatif dengan jenis penelitian library research. Adapun teknik pengumpulan data dilakukan dengan cara memahami surat Yusuf dengan utuh dengan pendekatan tafsir maudhu’i, kemudian dianalisis dengan menggunakan metode content analysis. Hasil penelitian ditemukan Nabi Yusuf adalah sosok figur pemuda yang dari aspek material dari awalnya terbuang kemudian menjadi seorang yang memiliki segalanya, secara intelektual merupakan pemuda yang cerdas dan inspiratif, dan dari segi ruhani merupakan pribadi yang taat dan istiqamah dalam beragama.
Can psychedelic-assisted psychotherapy play a role in enhancing motivation to change in addiction treatment settings?
Authors: Kang Mark , Mackay Lindsay , Christie Devon , Callon Cody , Argento Elena
Published: March 2022

Despite growing availability of several evidence-based approaches in the treatment of substance use disorders, existing pharmacotherapy and psychosocial interventions continue to have significant limitations, such as low treatment retention rates and high rates of relapse. There is a need to develop new strategies and models to address these limitations and target underlying psychosocial drivers of addiction, such as motivation to change – a crucial factor in achieving positive addiction treatment outcomes. Re-emerging clinical evidence and literature signal the promise of psychedelic-assisted psychotherapies as being novel, adjunctive treatments for a range of mental health and substance use disorders, encouraging further research. However, there remains a lack of formally validated metrics to evaluate recovery capital and motivation, limiting interpretation of the growing psychedelic literature. This commentary describes the current state of this line of investigation and potential impact of psychedelic-assisted psychotherapy on enhancing motivation to change in addiction treatment, and the need for validated metrics to evaluate recovery motivation and capital to assess the potential for psychedelic-assisted psychotherapies to elicit positive, lasting changes in substance use behaviors among those seeking treatment.
Identifikasi Keputusan Pemberlakukan Pembatasan Sosial Berskala Besar (Psbb) Di Provinsi Dki Jakarta Tahun 2020
Authors: Sari Dian
Published: March 2022

The Covid-19 pandemic that is currently occurring in Indonesia, especially in the DKI Jakarta Province, began to occur at the end of February 2020. This pandemic has made changes in various sectors, this indicates that the conditions that occur during a pandemic are conditions that cannot be predicted. Mr. Anies Baswedan as the Governor of Indonesia's capital city has a very big role in making effective decisions during this pandemic. One of the keys to the success of a leader is making an effective decision. In this research, it tries to describe the style of decision making by the Governor of DKI Jakarta during the Covid-19 Pandemic conditions. The research method used is qualitative research techniques with descriptive analysis methods, data collection using literature study. Based on data analysis, the decision to enforce the PSBB (Large-Scale Social Restrictions) is essentially very important and constitutes an informative, unprogrammed decision on decentralization based on facts and intuition.
Implementasi Program Keluarga Harapan Pada Masa Pandemi Covid-19 di Kabupaten Kampar Provinsi Riau
Authors: Mediana Winda , As'ari Hasim
Published: March 2022

Tambang Sub-district is one of the sub-districts located in Kampar Regency, Riau Province which also established the Covid-19 Pandemic with the current number of PKH recipients as many as 1,804 Beneficiary Families (KPM). This study aims to determine the implementation of the Program Keluarga Harapan (PKH) during the Corona Virus Disease 2019 (Covid-19) Pandemic in Tambang District, Kampar Regency and the inhibiting factors for the implementation of the Program Keluarga Harapan (PKH) during the Corona Virus Disease 2019 (Covid-19) Pandemic. ) in the Mine District, Kampar Regency. The concepts used by researchers are policy theory, policy implementation theory, and the concept of the Program Keluarga Harapan (PKH). The research method used is qualitative using a descriptive case study method with data collection techniques through interviews and documentation. The results of this study indicate that the implementation of the Program Keluarga Harapan (PKH) during the Corona Virus Disease 2019 (Covid-19) Pandemic in Tambang District, Kampar Regency is carried out by applying standards and targets, resources, relationships between organizations, characteristics of implementing agents, social environmental conditions. and economics and disposition of implementers. Then there are also inhibiting factors for the implementation of the Program Keluarga Harapan (PKH) during the Corona Virus Disease 2019 (Covid-19) Pandemic in Tambang District, Kampar Regency, namely the invalid PKH KPM data during the Covid-19 period, adjustments and calculations for PKH assistance during the Covid-19 period. 19 have not fully provided benefits, KPM PKH has difficulty accessing Health Facilities (Faskes) and Education Facilities (Fasdik) during the Covid-19 period, socialization of PKH policies during the Covid-19 period has not been effective, Standard Operational Procedures (SOP) for reporting problems of KPM PKH which intersect with the unstructured BPNT and problematic KPM PKH administration data in e-PKH.Keywords: Implementationi, Program Keluarga Harapan (PKH)
Error correction for reliable quantum computing
Authors:   , Fuentes Patricio
Published: March 2022

Quantum computers herald the arrival of a new era in which previously intractable computational problems will be solved efficiently. However, quantum technology is held down by decoherence, a phenomenon that is omnipresent in the quantum paradigm and that renders quantum information useless when left unchecked. The science of quantum error correction, a discipline that seeks to combine and protect quantum information from the effects of decoherence using structures known as codes, has arisen to meet this challenge. Stabilizer codes, a particular subclass of quantum codes, have enabled fast progress in the field of quantum error correction by allowing parallels to be drawn with the widely studied field of classical error correction. This has resulted in the construction of the quantum counterparts of well-known capacity-approaching classical codes like sparse codes and quantum turbo codes. However, quantum codes obtained in this manner do not entirely evoke the stupendous error correcting abilities of their classical counterparts. This occurs because classical strategies ignore important differences between the quantum and classical paradigms, an issue that needs to be addressed if quantum error correction is to succeed in its battle with decoherence. In this dissertation we study a phenomenon exclusive to the quantum paradigm, known as degeneracy, and its effects on the performance of sparse quantum codes. Furthermore, we also analyze and present methods to improve the performance of a specific family of sparse quantum codes in various different scenarios.
Identifying hydrologic reference stations to understand changes in water resources across Vietnam - a data-driven approach
Authors: Xuan Do Hong , -Hung Le Manh , Thanh Pham Hung , Hoang Le Tu , Quang Nguyen Binh
Published: March 2022

Among the impacts of climate change and variabilities, change in the terrestrial water cycle has been investigated extensively due to the importance of water resources to the Earth System. The detection and attribution of changes in river flows, however, are usually complicated by the impacts of on-ground human activities such as urbanization or dam construction that have altered flow regimes. As a result, hydrological reference stations – gauges measuring river flows of catchments that are unregulated - have been identified in many countries to provide streamflow records that are suitable for climate studies. Such a network, to the best of our knowledge, has not been promoted widely in Vietnam, making it difficult to determine the actual impact of climate change and variability to river flow regimes at the national scale. To address this limitation, this study uses a data-driven approach to identify stations that have not been influenced substantially by human activities for Vietnam. Specifically, we have carefully assessed streamflow records at 68 locations that are not influenced by tidal regime to identify stations with relatively good data quality. The drainage area associated with each of these stations was then delineated following international standards, and then used to identify catchments that were not associated with large dams. The catchment boundary was also used to extract land surface information, available through an ensemble of different satellite-based data products, to further identify catchments that are not featured by large urban areas, or experienced a substantial change in land cover during the 2000-2019 period. Using these criteria, this study suggested two subsets of stations distributed across the countries, providing a good starting point for future investigations into the impacts of climate change on water resources in Vietnam. The investigation also suggests that more investments are required to maintain and expand the hydrologic reference network for Vietnam.
Characterizations of a helicoid and a catenoid
Authors: KUCUKARSLAN YUZBASİ Zuhal , YOON Dae Won
Published: March 2022

In the present article, we consider a parametric surface generated by the Frenet frame of a curve, and study the minimality condition for the surface. As a result, we give characterizations of a helicoid and a catenoid. Finally we show some examples of minimal surfaces generated by a circle and a helix.
Johns modules and quasi-Johns modules
Authors: CASTRO PÉREZ Jaime , MEDINA-BÁRCENAS Mauricio Gabriel
Published: March 2022

A right Johns ring is a right Noetherian ring in which every right ideal is a right annihilator. It is known that in a Johns ring RR the Jacobson radical J(R)J(R) of RR is nilpotent and Soc(R)(R) is an essential right ideal of RR. Moreover, every right Johns ring RR is right Kasch, that is, every simple right RR-module can be embedded in RR. For a M∈RM∈R-Mod we use the concept of MM-annihilator and define a Johns module (resp. quasi-Johns) as a Noetherian module MM such that every submodule is an MM-annihilator. A module MM is called quasi-Johns if any essential submodule of MM is an MM-annihilator and the set of essential submodules of MM satisfies the ascending chain condition. In this paper we extend classical results on Johns rings, as those mentioned above and we also provide new ones. We investigate when a Johns module is Artinian and we give some information about its prime submodules.
Variational equations and Killing magnetic trajectories on timelike surfaces in semi-Riemannian manifolds
Authors: ŞAHİN Kübra , OZDEMİR Zehra
Published: March 2022

In this article, Darboux frame variations for timelike surfaces in semi-Riemannian manifolds are discussed. In addition, the Killing equations are examined by using the Darboux frame curvature variations. Then, magnetic trajectories are generated by means of the variational vector fields. Furthermore, parametric representations of all magnetic trajectories on the de Sitter space $\mathbb{S}_{1}^{2}$ are presented. Moreover, various examples of magnetic trajectories are given in order to illustrate the theoretical results.
Approximately Cohen-Macaulay modules
Authors: YAZDANİ Saeed , A'ZAMİ Jafar , SADEGH Yasin
Published: March 2022

Let $(R,\mathfrak m)$ be a commutative Noetherian local ring. There is a variety of nice results about approximately Cohen-Macaulay rings. These results were done by Goto. In this paper we prove some these results for modules and generalize the concept of approximately Cohen-Macaulay rings to approximately Cohen-Macaulay modules. It is seen that when $M$ is an approximately Cohen-Macaulay module, for any proper ideal $I$ we have $grade(I,M) \geq \dim_R M -\dim_R M/IM -1$. Specially when $M$ is $R$ itself, we obtain an interval for $grade(I,R)$. We also give a definition for these modules in case that $R$ is not necessarily local and show that approximately Cohen-Macaulay modules are in close relationship with perfect modules. Finally we consider the behaviour of these modules under faithful flat extensions.
Behavioral risk factors for noncommunicable diseases associated with depression and suicide risk in adolescence
Authors: Barbosa Janaina Maiana Abreu , Ribeiro Cecilia Claudia Costa , Batista Rosangela Fernandes Lucena , Brondani Mario Augusto , Simões Vanda Maria Ferreira , Bettiol Heloisa , Barbieri Marco Antônio , Coelho Sâmia Jamile Damous Duailibe de Aguiar Carneiro , Silva Antonio Augusto Moura da
Published: March 2022

Noncommunicable diseases (NCDs) and mental disorders cooccur in adulthood, which is why their determinants and common risk factors should be addressed at an early age. Therefore, we estimated the association of the major risk factors for NCDs with depression and suicide risk by structural equation modeling considering pathways triggered by social vulnerability or mediated by obesity. This population-based study included 2,515 Brazilian adolescents. The following exposures were the major risk factors for NCDs: substance use behaviors (variable deduced from alcohol, tobacco, and drug use), physical inactivity, and components of unhealthy eating markers (added sugar and saturated fat). Obesity was assessed using the fat mass index. The outcomes were depression and suicide risk. Depression was associated with substance use behaviors (SC = 0.304; p < 0.001), added sugar (SC = 0.094; p = 0.005), and females (SC = 0.310; p < 0.001). Suicide risk was also associated with substance use behaviors (SC = 0.356; p < 0.001), added sugar (SC = 0.100; p = 0.012), and females (SC = 0.207; p < 0.001). In adolescents, these associations may help explain the cluster of NCDs and mental disorders in adulthood.
Associações entre duração de sono e índices de massa gorda, muscular e corporal em adolescentes de São Luís, Maranhão, Brasil
Authors: Santana Karen das Graças Ferreira Passos , Confortin Susana Cararo , Bragança Maylla Luanna Barbosa Martins , Batista Rosângela Fernandes Lucena , Santos Iná da Silva dos , Silva Antônio Augusto Moura da
Published: March 2022

O objetivo do estudo foi avaliar a associação entre duração de sono e composição corporal em adolescentes. Estudo transversal, com 1.269 adolescentes de 18 e 19 anos da coorte de nascimentos de 1997/1998 de São Luís, Maranhão, Brasil. A duração do sono foi avaliada a partir dos dados registrados por acelerometria. A composição corporal foi avaliada pelo o índice de massa gorda (IMG), índice de massa muscular (IMM) e índice de massa corporal (IMC). Os fatores de confusão foram identificados em gráfico acíclico direcionado no programa DAGitty 3.0. Foram realizadas análises descritivas para todas as variáveis e, posteriormente, regressão linear, com estimativa dos coeficientes de regressão brutos e ajustados, com os respectivos intervalos de 95% de confiança (IC95%). Nos adolescentes do sexo masculino, cada hora a mais de sono associou-se a reduções de 0,30kg/m2 do IMM (IC95%: -0,45; -0,15), de 0,26kg/m2 do IMG (IC95%: -0,48; -0,03) e 0,61kg/m2 do IMC (IC95%: -0,93; -0,30). Nas adolescentes, cada hora a mais de sono associou-se à redução de 0,22kg/m2 do IMM (IC95%: -0,36; -0,07). A maior duração do sono associou-se a menor IMM em ambos os sexos e menor IMG e IMC no sexo masculino, o que evidencia a importância de ter adequadas horas de sono para melhorar os índices de composição corporal.
Morphometry of fruits and pyrenes in two morphotypes and populations of Butia purpurascens Glassman (Arecaceae)
Authors: Rocha James Dean Leal , Guilherme Frederico Augusto Guimarães , Rocha Diego Ismael , Pereira Kaila de Assis Ressel , Coelho Christiano Peres , Souza Luzia Francisca de
Published: March 2022

ABSTRACT: Morphometry of fruits and seeds is a useful and important information for phenotyping and genetic characterization of crop plant species and, for conservation of endangered species, as is the case of Butia purpurascens Glassman. In this study, we determined comparatively the morphometric features of fruits and pyrenes between yellow and magenta B. purpurascens morphotypes, located in four different sites (populations). We processed 1380 fruits collected from 69 individuals. We evaluated the length, width and weight of the fruits and pyrenes, the fresh and dry pulp mass, and percentage of pulp moisture. Yellow morph showed larger and heavier fruits than magenta morph. Morphometric differences were also evident among the four populations, suggesting that ecosystems fragmentation can cause deleterious genetic effects in B. purpurascens in long-term.
Efeitos da adição de nanocompósito híbrido baseado em hidrogel de polissacarídeo e nanoargila nas propriedades nos estados fresco e endurecido de argamassas cimentícias
Authors: Calesco M. A. F. , Watanuki Filho A. , Moura M. R. de , Aouada F. A.
Published: March 2022

Resumo As argamassas são compósitos heterogêneos cujo ganho de resistência ocorre por meio de uma sucessão de reações químicas entre a água e o cimento Portland. Nesse sentido, polímeros hidrofílicos capazes de absorver água e liberá-la posteriormente vêm sendo desenvolvidos para melhorar as propriedades das argamassas. Assim, hidrogel à base de poliacrilamida, carboximetilcelulose e nanoargila foi sintetizado e aplicado em argamassas cimentícias preparadas com diferentes relações água/cimento (a/c = 0,40, 0,48 e 0,50). A sua aplicação nas argamassas reduziu o índice de consistência e a taxa de exsudação, e não ocasionou variação na densidade no estado endurecido destas. Já os índices de absorção de água das argamassas com hidrogel com a/c= 0,40 e 0,50 reduziram cerca de 6,1% e 6,7%, respectivamente. Esse mesmo comportamento também foi observado para a resistência à compressão. Em suma, o desenvolvimento e aplicação de hidrogéis capazes de absorver e liberar água é uma área bastante promissora para a construção civil.
Is sleep time associated with handgrip strength in adolescents from the 1997/1998 São Luís Birth Cohort?
Authors: Confortin Susana Cararo , Batista Rosângela Fernandes Lucena , Barbosa Aline Rodrigues , Wendt Andrea , Crochemore-Silva Inácio , Alves Maria Teresa Seabra Soares de Britto e , Simões Vanda Maria Ferreira , Silva Antônio Augusto Moura da
Published: March 2022

Abstract This article aims to analyze the association between sleep time and handgrip strength in adolescents belonging to the 1997/1998 São Luís Birth Cohort. This was a cross-sectional study nested in a birth cohort study. One thousand two hundred sixty-nine individuals (18 and 19 years) wore an Actigraph® GTX3+ accelerometer on their wrist 24 hr/day for 7 consecutive days. Handgrip strength was measured using a digital hand dynamometer. We used directed acyclic graphs (DAG) to identify confounding variables. This sample of adolescents was mostly composed of men, with brown skin color, economic class C, which did not work, did not consume alcohol, did not smoke, and never used drugs. The mean value of handgrip strength was 28.2 (±9.3) kgf, and the mean of sleep time was 6 (±1.0) hours per day. The crude analysis showed an association between sleep time and muscle strength. An increase of one hour of sleep reduced the handgrip strength by 1.95 kgf (95%CI:-2.51;-1.39). However, after adjustment for confounders, the association was not maintained (β:-0.07; 95%CI:-0.48;0.36). Sleep time is not associated with handgrip strength in adolescents in São Luís.
Formação na Residência Multiprofissional em Atenção Básica: revisão sistemática da literatura
Authors: Flor Taiana Brito Menêzes , Cirilo Edemberg Teixeira , Lima Rafael Rodolfo Tomaz de , Sette-de-Souza Pedro Henrique , Noro Luiz Roberto Augusto
Published: March 2022

Resumo Este estudo tem como objetivo investigar a formação de profissionais de saúde em programas de Residência Multiprofissional em Saúde (RMS) direcionados à atenção básica no Brasil. Trata-se de uma revisão sistemática da literatura conduzida nas bases de dados SciELO, BVS e PubMed no ano de 2019, registrada sob número CRD42019134350. A busca ocorreu utilizando descritores relacionados à RMS e à atenção básica, sendo incluídas pesquisas empíricas sobre o tema sem alto risco de viés. Dos 700 registros recuperados no processo de busca, 13 artigos foram incluídos na revisão. Todos os estudos apresentaram abordagem qualitativa, predominando estudos realizados no estado de São Paulo e com baixo risco de viés (69%). Os principais resultados foram categorizados em: contribuição de dispositivos para a formação pelo trabalho; estratégias balizadoras da formação; potencialidades da residência para a formação em saúde; e dificuldades experienciadas no processo de formação. A formação nos programas estudados tem proporcionado um novo perfil de profissional de saúde, apesar das limitações vivenciadas no processo. Torna-se necessário investimento na qualificação dos atores envolvidos na formação, uma vez que essa foi uma das principais dificuldades relatadas.
Experiencias y percepciones sobre sexualidad, riesgo y campañas de prevención de ITS/VIH por estudiantes universitarios. Diseñando una intervención digital
Authors: Duarte-Anselmi Giuliano , Leiva-Pinto Eduardo , Vanegas-López Jairo , Thomas-Lange Jeffrey
Published: March 2022

Resumen Damos cuenta de la fase cualitativa de una investigación que busca diseñar una intervención digital de prevención de ITS/VIH y promoción de salud sexual en jóvenes universitarios. A partir de grupos focales se abordó la experiencia y percepción que universitarios tienen sobre sexualidad, riesgo y campañas de prevención. Se realizan entrevistas semiestructuradas a informantes claves. Los resultados muestran que la educación sexual es escasa, reducida a lo biológico, cargada de prejuicios y sesgos de género, limitando el manejo de información por la población estudiantil. Se evidencian estrategias vacilantes de prevención, no logrando motivar ni ofrecer oportunidades para la toma de decisiones conscientes y autónomas en salud sexual. Las campañas de ITS/VIH se evaluaron poco inclusivas, lejanas y basadas en el miedo. Las intervenciones en salud sexual han fallado en sopesar aspectos experienciales de la sexualidad juvenil, basándose en modelos de comportamiento ideal y estereotipado, desechando narrativas en primera persona y su rica complejidad. Es imperativo innovar en la prevención de ITS/VIH, formulando intervenciones basadas en un diseño integrador, multidisciplinar y situado, que valore la teoría y la experiencia de las poblaciones objetivo.
Dimensões da violência do aluno contra o professor
Authors: Alves Angela Gilda , Cesar Flaviane Cristina Rocha , Barbosa Maria Alves , Oliveira Lizete Malagoni de Almeida Cavalcante , Silva Edinamar Aparecida Santos da , Rodríguez-Martín Dolors
Published: March 2022

Resumo A violência contra o professor é uma preocupação global e traz impacto negativo para o desenvolvimento da sociedade. Nesse contexto, o estudo objetivou revisar definições de violência contra o professor para desenvolver consenso integrado e modelo conceitual. Foi realizada uma revisão de escopo de literatura para incluir artigos que pudessem responder à pergunta norteadora da pesquisa: “Quais são as definições e as dimensões da violência do aluno contra o professor no ensino?” Nos estudos incluídos na revisão, identificou-se que a violência contra o professor pode ser definida como o conjunto de ações e situações provocadas por estudantes de forma insidiosa ou crônica no local de trabalho e/ou meio digital, mediadas por percepção de violência, mecanismo de enfrentamento do professor e gestão organizacional da violência. O modelo integrado de violência contra o professor compreende antecedentes conceituais, como a experiência anterior com violência contra o docente, definição cultural de violência e percepção de vitimização. A violência propriamente dita contra o professor é um construto multidimensional que resulta da interação com o estudante nos contextos organizacional e social. As consequências da violência contra o professor incluem danos psicológicos, emocionais, biológicos, profissionais e sociais.
Reporting COVID-19 preprints: fast science in newspapers in the United States, the United Kingdom and Brazil
Authors: Massarani Luisa , Neves Luiz Felipe Fernandes
Published: March 2022

Abstract The COVID-19 pandemic accelerated the pace of science. Many scientific data are published on preprint repositories, prior to peer review, which raises questions about the credibility of the information not yet validated by other scientists. We analyzed 76 stories published from January to July 2020 by three newspapers (The New York Times - USA, The Guardian - UK and Folha de S. Paulo - Brazil), having as topic studies on COVID-19 published on preprint platforms. The objective was to analyze how the media covered non-peer-reviewed research, in countries marked by conflicting discourses prompted by the denialist attitude of their government leaders. The results show that the newspapers did not provide a detailed explanation of what a preprint platform is, how the process of publishing research results works, and the implications of a study that has not yet been peer reviewed. The analysis also reveals how these news outlets were guided by the anxiety from an unknown disease, focusing on research on drug trials and seroprevalence. The study leads us to reflect on the challenges and weaknesses of covering fast science and the need to broaden the public’s understanding of the methods and processes of science.
Espelho sem reflexos: conflitos e vulnerabilidades socioambientais em uma região produtora de cana-de-açúcar
Authors: Gurgel Aline do Monte , Souto Aline de Souza , Guedes Clenio Azevedo , Guedes Geovanna Hachyra Facundo , Pereira João Antonio dos Santos , Bezerra Virgínia Carmem Rocha
Published: March 2022

Resumo O objetivo deste estudo é analisar os impactos socioambientais e sanitários decorrentes do monocultivo da cana-de-açúcar em um município da Zona da Mata pernambucana. Foi realizado um mapeamento coletivo, com uso da cartografia social. Os problemas investigados foram representados graficamente em mapas, cujas versões finais foram elaboradas pelo Software ArcGIS 10.2. O estudo foi realizado no distrito de Tejucupapo, situado em Goiana, selecionado por sua proximidade dos canaviais. No ambiente observou-se aumento do desmatamento, degradação do mangue, assoreamento dos rios, diminuição do pescado e contaminação das águas e de outras culturas por agrotóxicos e esgoto. Para a saúde, foram apontados problemas respiratórios pela queima da cana, intoxicações por agrotóxicos e precariedade da rede assistencial. Na dimensão sociocultural foram identificados conflitos relacionados ao uso e à ocupação das terras, com perda, expropriação e destruição de objetos e símbolos históricos da comunidade, tendo como reflexos a perda da identidade cultural. Os problemas relacionados ao cultivo da cana afetam severamente a saúde e destroem o território tanto em seus aspectos ambientais como na própria construção identitária da comunidade, ameaçando os modos de vida tradicionais.