bluuebunny/crossref_metadata_2025 huggingface dataset:
PENGEMBANGAN MODUL GEOMETRI SD BERBASIS ETNOMATEMATIKA
Authors: Sriwanti Putri Utami , Sukmawarti Sukmawarti
Published: August 2022

Penelitian ini merupakan jenis penelitian pengembangan R&D ( Research and Development ) dengan modifikasi model pengembangan ADDIE ( Analysis, Design, and Development) yang bertujuan untuk mengembangkan modul geometri SD berbasis etnomatematika, dengan menggunakan teknik analisis data deskriptif kualitatif. Berdasarkan hasil penelitian dan pengembangan menunjukkan bahwa modul yang dikembangkan layak untuk digunakan berdasarkan validasi oleh ahli materi memperoleh 15 kategori penilaian “YA” dari 15 pernyataan dan validasi oleh ahli media I dan ahli media II sama-sama memberikan 14 kategori penilaian “YA” dan 1 kategori penilaian “TIDAK”. Berdasarkan data yang diperoleh dapat disimpulkan bahwa Pengembangan Modul Geometri SD Berbasis Etnomatematika layak untuk digunakan.
PENGEMBANGAN MEDIA KOMIK PADA MATERI OPERASI PERKALIAN KELAS II SD NEGERI 117520 SIALANG GATAP TAHUN AJARAN 2020/2021
Authors: Wardah Wardah , Napitupulu Safrida
Published: August 2022

Tujuan penelitian ini adalah untuk mengembangkan media komik pada materi operasi bilangan perkalain kelas II SD Negeri 117520 sialang gatap tahun ajaran 2020/2021. Bentuk penelitian ini adalah r & d (research and depolopment), dan model pengembangan ini menggunakan model ADDIE yang terdiri dari beberapa tahapan. 1.Analysis, 2. Perancangan (design), 3. Pengembangan (development), 4. Implementasi (implementation), 5.Evaluasi (evalution). Berdasarkan hasil penelitian ini dapat disimpulkan bahwa pembelajaran perkalian menggunakan media komik dapat membantu dalam proses belajar mengajar siswa kelas II SDN 117520 Sialang Gatap, hal ini terbukti dari hasil validasi para ahli media yang mendapat tanggapan layak digunakan tanpa revisi sedangkan validasi ahli materi mendapat tanggapan layak digunakan dengan materi.
ANALISIS MODEL PEMBELAJARAN KOOPERATIF TIPE STAD DALAM MENINGKATKAN HASIL BELAJAR SISWA
Authors: Sriana Jenni , Sujarwo Sujarwo
Published: August 2022

Penelitian ini bertujuan untuk mendeskripsikan model pembelajaran kooperatif tipe STAD dalam meningkatkan hasil belajar siswa. Penelitian ini dilaksanakan dengan metode Library Research yang berlokasi diperpustakaan atau ruang baca secara offline maupun online. Sumber data penelitian ini yaitu 10 jurnal atau artikel karya ilmiah yang berhubungan dengan model pembelajaran kooperatif tipe STAD terhadap hasil belajar siswa. Teknik pengumpulan data dalam penelitian ini yaitu telaah dokumen atau biasa disebut dengan dokumentasi. Dokumentasi dilakukan dengan mengumpulkan data-data tentang model pembelajaran kooperatif tipe STAD terhadap hasil belajar siswa. Hasil penelitian menggunakan jenis penelitian kualitatif dengan mendeskripsikan data penelitian yang ada. Berdasarkan hasil analisis data yang diperoleh dari hasil penelitian, menyatakan bahwa model pembelajaran kooperatif tipe STAD berperan dalam meningkatkan hasil belajar siswa dan layak digunakan dalam pembelajaran.
PENGEMBANGAN MEDIA SCRAPBOOK PADA PEMBELAJARAN IPA MATERI STRUKTUR DAN FUNGSI TUMBUHAN KELAS IV SD
Authors: Pasaribu Wirda Ichsani , Silalahi Beta Rapita
Published: August 2022

Penelitian ini bertujuan untuk mengetahui prosedur pengembangan media scrapbook dan tingkat kelayakannya. Pengembangan media ini menggunakan metode penelitian dan pengembangan atau penelitian R&D (Research & Development). Pengembangan produk pada penelitian ini menggunakan model 4D. Subjek dari uji coba guru kelas IV yang berada di sekolah 064991 MEDAN AMPLAS dengan materi struktur dan fungsi tumbuhan. Objek dalam penelitian ini adalah media scrapbook materi struktur dan fungsi tumbuhan. Adapun waktu penelitian akan direncanakan pada bulan september 2021. Prosedur pengembangan yang harus di lakukan untuk menghasilkan bahan ajar media scrapbook berbentuk Pop Up Book terdiri dari analisis masalah, mendesain media gambar scrapbook, validasi produk dan revisi. Instrument pokok yang di pakai untuk mengumpulkan data dalam pengembangan ini adalah instrument ahli materi dan instrument ahli media yang berasal dari dosen Universitas Muslim Nusantara Al Washliyah Medan dan tanggapan dari guru kelas IV. Teknik analisi data yang digunakan dalam penelitian ini menggunakan analisis deskriptif kualitatif, yaitu data yang di peroleh dari hasil dari pertanyaan lembar observasi tim ahli validasi media, materi dan tanggapan guru. Berdasarkan analisis hasil penelitian dan pembahasan, maka dapat tahap dengan satu kali revisi, media scrapbook pada pembelajaran IPA yang dikembangkan mengalami dinyatakan baik dan layak untuk digunakan sebagai media pembelajaran di SD. Hal ini dapat dibuktikan dengan penilaian yang diperoleh dari produk awal dengan produk revisi mengalami kenaikkan penilaian.
Comparative Analysis of Various Software Development Life Cycle
Authors: Sawarkar Gurudev , Rajput Dipesh
Published: August 2022

Software development life cycle is the process used by the software industry to design, build, and test high-quality software. SDLC's primary objective is to provide high-quality software that exceeds customer expectations. SDLC may also be referred to as Application Development Life Cycle. SDLC is not a technique; rather, it is a description of several phases. Participate in software development from project design to deployment. Sustainment. These SDLC phases serve as a roadmap for project activities. In our in this study, we describe many SDLC models (Waterfall, Spiral, V-Model, Iterative,). Rapid Application Development Model).
VERIFICAÇÃO SOBRE A SITUAÇÃO DO BANCO DE ALIMENTOS DE POÇOS DE CALDAS-MG E SUA REPERCUSSÃO AO COMBATE À INSEGURANÇA ALIMENTAR E NUTRICIONAL NO PERÍODO DE PANDEMIA DE COVID-19
Authors: Lopes Forte Flor Gabriele , Paiva Lourenção Luiz Felipe de
Published: August 2022

Os Bancos de Alimentos caracterizam-se como importantes Equipamentos Públicos de Segurança Alimentar e Nutricional, contribuindo para o combate à fome da população, exercendo, sobretudo neste tempo de Pandemia de COVID-19, como uma ação estratégica ao combate à insegurança Alimentar e Nutricional. Este trabalho tem por objetivo fazer uma análise situacional do Banco de Alimentos de Poços de Caldas, no sul de Minas Gerais, e ainda, analisar a ações de combate à fome no período atual. Trata-se de um estudo observacional com abordagem qualitativa e quantitativa, caracterizando-se como um Estudo de Caso e utilizando-se manuais operacionais, documentos internos e registros como instrumentos de coleta. Pela análise realizada, verifica-se que o Banco de Alimentos de Poços de Caldas-MG está em consonância com as orientações do Guia Operacional e de Gestão para Bancos de Alimentos do Ministério da Cidadania, e durante o período de pandemia, vem contribuindo de forma efetiva para garantir a Segurança Alimentar e Nutricional dos moradores da cidade, através de ações estratégicas para promover o Direito Humano à Alimentação Adequada, como campanhas, ações de arrecadação de alimentos e devidas distribuições à comunidade e entidades locais.
Reflections on Fifty Years of Utility Line Clearance
Authors: Abbott Richard
Published: August 2022

Utility line clearing has developed into a major industry. Many utilities today employ professionals (arborists, foresters, etc.), to direct their programs. Increased federal and state regulations have changed work procedures, tools, methods, equipment, etc. Basically the line clearance industry, with the exception of telephone/telegraph, has reacted to crisis. There is a need for a research coordinating committee to establish priorities, goals and ultimately stabilize or reduce maintenance line clearing cost.
Foreign Economic Priorities for the Development of Agro-Food Enterprises in European Integration Business Partnership
Authors: Shpychak Oleksandr , Varchenko Olga , Svynous Nadiia , Semysal Anna , Ostapenko Serhii , Prystеmskyi Oleksandr
Published: August 2022

Agro-food production is a source of the national food security, the basis for increasing its export potential, meeting domestic demand for agricultural products and food. The relevance of the subject under study is that Ukraine is currently developing the European vector of foreign economic activity. The purpose of this study is to substantiate a set of indicators used to assess the export potential of agro-food enterprises in the European integration business partnership both qualitatively and quantitatively. The authors used general scientific methods (analysis, synthesis), integrated approach, model of the hierarchy of factors influencing the integration business environment on the export potential of enterprises. Permissible tariff quotas for the volume of duty-free exports of crop products, livestock, and processed goods for Ukraine have been allocated. The volume of concentration of production of export-oriented agricultural crops in the enterprises of agrofood production of Ukraine was analysed. It was established that the bulk of agro-food exports are agricultural raw materials, including cereals and oilseeds, vegetable (sunflower) oil. The study estimated the efficiency of corn exports on average per agro-food enterprise in Ukraine under the conditions of currency risks. It was determined that in 2020 the total export costs for 1 tonne amounted to 186.18 USD. Furthermore, it was found that the profit received as a result of export activity for 1 tonne was 76.90 USD. The authors identified the parameters of the regression equation and their estimation in the dependence model of Ukrainian internal prices on export prices for agrofood products on the world market. The gravitational model of the integrated level of the export potential of Ukrainian agro-food enterprises was proposed to stimulate foreign trade on the world market and ensure a stable business partnership with European Union member states
Impact of COVID-19 Pandemic on Animal Husbandry: A Review
Authors: S. G. Patil  , N. A. Patel
Published: August 2022

The COVID-19 pandemic across the world had different effects of the disease on almost all countries, various industries, and numerous economic sectors that in term were often managed in different ways. At the global level of quarantine and lockdowns to cope with the COVID-19 pandemic, the whole of humanity has been faced with various problems, food insecurity being one of them. This review highlighted the impact of the COVID-19 virus on the animal husbandry sector. Dairy, meat, poultry, aquaculture, and others (insects) are the segments of the animal husbandry industry. Animal husbandry plays a very vital role economy of many countries. The globe, almost all countries have forced the closure of schools, restaurants, malls, shops, and markets, limitations on public gatherings and travel resulted in decreased demand for animal products. Lockdown restricts movement and disrupts national and international trade routes is holding back farmers’ access to breeding materials and replacement stocks. This can hit hard to sales for input providers. Pandemic has adversely affected livestock production, animal feed supply chain, skilled workforce, and products from animal husbandry.
Coletivo Psicanálise na Praça Roosevelt: Um Contexto de Psicanálise Extramuros
Authors: Rocha Tiago Humberto Rodrigues , Santos Yan Lázaro
Published: August 2022

O Coletivo de Psicanálise na Praça Roosevelt foi fundado em 2017, com o intuito de oferecer atendimento psicanalítico gratuito semanal na Praça Roosevelt, na cidade de São Paulo. Além das sessões aos sábados, realizadas em praça pública, possui um processo de intervisões semanais, nas quais são discutidos aspectos tanto do próprio Coletivo quanto dos casos clínicos adotados pelo mesmo. A pesquisa tem como principal objetivo investigar o trabalho realizado na Praça em seus aspectos técnicos, transferenciais e políticos. Foram realizadas entrevistas semiestruturadas com membros ativos e os resultados permearam sobre tópicos a respeito do espaço de atendimento, rotatividade, tempo, contrato, desmonetização, desejo do analista e apresentação de casos mais graves. A discussão foi organizada a partir do método de análise de conteúdo de Turato, estando organizada em três tópicos: (I) aspectos técnicos e transferenciais no setting na Praça Roosevelt; (II) a Psicanálise e o psicanalista no coletivo; (III) a Psicanálise na praça e seus aspectos políticos. Conclui-se que o modelo de clínica aberta em espaço público é potente e sua reprodução deve se embasar na política do não-saber e na transferência, representando a psicanálise em suas potencialidades clínicas, além de potencializar seu caráter político subversivo.
Cardiac arrhythmias and mortality risk among patients with obstructive sleep apnea following admission for acute myocardial infarction or acute ischemic stroke
Authors: Ramphul Kamleshun , Lohana Petras , Verma Renuka , Kumar Nomesh , Ramphul Yogeshwaree , Lohana Arti , Sombans Shaheen , Mejias Stephanie , Kumari Komal
Published: August 2022

Introduction

Obstructive sleep apnea (OSA) can cause several cardiovascular changes that increase the risk of various complications such as acute myocardial infarction (AMI) and acute ischemic stroke (AIS).

Material and methods

We used the 2019 National Inpatient Sample (NIS) from the Healthcare Cost and Utilization Project (HCUP), the Agency for Healthcare Research and Quality (AHRQ), and their many collaborators to study the differences in characteristics and outcomes of OSA patients following AMI or AIS and the presence of several cardiac arrhythmias and their associated mortality risks.

Results

A lower mortality rate was seen among OSA patients with AIS (2.5% compared to 3.8% in non-OSA), and AMI (2.8% compared to 4.7% in non-OSA). OSA patients with AIS had a higher risk of dying if they were aged 66 or over, of Hispanic origin, or if they reported ventricular tachycardia, or paroxysmal atrial fibrillation. For those with OSA and admitted for AMI, they were more at risk of dying if they were aged 66 or over, not classified as “White, Black, or Hispanic”, with a history of diabetes, reported ventricular tachycardia, or ventricular fibrillation. Lower adjusted odds ratios were noted among OSA patients with hypertension in both AMI and AIS cases.

Conclusions

Further studies comparing these characteristics based on the severity of OSA are therefore encouraged.
Evaluation of the frequency of incidental findings and their clinical significance in multiparametric prostate magnetic resonance imaging examination
Authors: Emekli Emre , Gündoğdu Elif
Published: August 2022

Introduction

Conventional diagnostic methods have limitations in the diagnosis of prostate cancer (PCa); therefore, the use of multiparametric magnetic resonance imaging (mpMRI) in PCa has become widespread. We aimed to determine the frequency of IF detected in the mpMRI examination according to organ distribution and clinical significance.

Material and methods

mpMRI examinations performed between January 2015 and 2020 based on the diagnosis or suspicion of PCa were retrospectively evaluated. IFs were divided into 2 groups, as genitourinary system and non-genitourinary system findings. In addition, IFs were also evaluated in 2 groups, as clinically significant and clinically non-significant. The patient population was divided into age ranges, and the frequency of IFs in these age ranges and their clinical significance were recorded.

Results

The mpMRI examinations of 426 patients revealed a total of 321 Ifs, comprising 212 (49.8%) genitourinary (41.1%) and 189 (58.9%) extragenitourinary findings. The mean age of the patients was 63.53 ± 7.89 years. As the age increased, the rate of IFs increased (p = 0.001). However, there was no increase for the 75-year-old group compared to the 65-74-year-old age range (p = 0.853). There were a total of 22 (6.9%) clinically significant Ifs – 4 associated with the genitourinary system and 18 extragenitourinary.

Conclusions

Although the rate of clinically significant IF was only 6.9%, this rate was high in patients, especially in those over the age of 65 years. It should be kept in mind that the early detection of these findings in the asymptomatic period will increase the survival and successful treatment of patients.
The impact of COVID-19 on radiological findings in patients accessing the emergency department: a multicentric study
Authors: Vingiani Vincenzo , Abadia Andres F. , Belmonte Gianfranco , Rutigliano Claudia , Pasqualetto Luigi , Presidente Alfonso , Napolitano Claudio , Lelario Maurizio , Corvino Antonio , Posa Alessandro
Published: August 2022

Introduction

The aim of this multicentric study is to illustrate how the COVID-19 pandemic lockdown affected the workload and outcomes of radiological examinations in emergency radiology.

Material and methods

The exams performed in the radiology departments of 4 Italian hospitals during 3 weeks of the Italian lockdown were retrospectively reviewed and compared to the exams conducted during the same period in 2019. Only exams from the emergency department (ED) were included. Two radiologists from each hospital defined the cases as positive or negative findings, based on independent blind readings of the imaging studies. In the case of differences in the evaluation, consensus was reached amongst them via discussion. Continuous measurements are presented as median and interquartile range, while categorical measurements are presented as frequency and percentage; p-values were calculated using the t-test, Mann-Whitney test, and the χ2 test.

Results

There were 745 patients (53% male; 62 years [44-78]) who underwent radiological examinations in 2020 vs. 2623 (52% male; 56 years [35-76]) in 2019 (p < 0.001). Furthermore, the total number of ED exams dropped from 3206 (2019) to 939 (2020), with a relative increase of CT examinations from 23% to 33% (p < 0.001). The percentage of patients with a positive finding was significantly higher in 2020 (355, 48%) compared to 2019 (684, 26%) (p < 0.001).

Conclusions

Our findings show that despite the reduction of emergency radiological examinations, there was a rela­tive increase in the number of positive cases. These significant findings are crucial to ensure better organization of radiology departments and improve patient management during similar health emergencies in the future.
Analisis Kompetensi Pedagogik dan Profesional Mahasiswa Praktek Pengalaman Lapangan Madiri (PPLM) Program Studi Pendidikan Teknik Informatika dan Komputer (PTIK) IAIN Bukittinggi
Authors: Pelita Ansara Ahmad Dori , Yemmardotillah M.
Published: August 2022

The PPL is a network of programmed activities for the LPTK students, which includes both teaching and training outside of teaching. It is a ground for shaping and developing the professional competence required by the work of a teacher or other educational institution. The aim is for the personality of the prospective educator who has the necessary body of knowledge, skill, value and attitude, as well as the pattern of conduct for his profession and is able and properly employed in conducting education and teaching. The practice of self-field experiences (PPLM) is a form of practical experience for tarbiyah and teacher trainig faculty students, in order to adjust between the theories acquired on the college bench and its practices at pademi covid-19. As for the main objectives of student PPL were able to instill teacher competence as professional candidates. Due to changes from PPL to PPLM, the research will be initiated to analysis of pedagogical competence and the professional competence of the student students who carry out PPLM activities. As for the methods used in this research are quantitative and potent sampling methods. The study is done in information and computer engineering education departments IAIN Bukittinggi.
Upaya Meningkatkan Hasil Belajar Melalui Model Pembelajaran Listening Team Mata Pelajaran Sejarah Kebudayaan Islam Siswa Kelas VIII MTs Swasta Tarbiyah Waladiyah Pulau Banyak Kecamatan Tanjung Pura Kabupaten Langkat
Authors: Saleh Muhammad , Zaki Ahmad , Agustina Sri
Published: August 2022

The objectives of this study are to determine the application of the listening team learning model at MTs Swasta Tarbiyah Waladiyah Pulau Banyak, to improve learning outcomes of Islamic Cultural History subjects in class VIII MTs Private Tarbiyah Waladiyah Pulau Banyak, to find out if there are any improving student learning outcomes through the listening team learning model for the subjects of Islamic Cultural History Class VIII MTs Swasta Tarbiyah Waladiyah Pulau Banyak. The model in this study uses Kurt Lewin's research model which consists of 4 stages, namely; planning, implementing actions, observing and reflecting. The subject of this research is the eighth grade students of MTs Swasta Tarbiyah Waladiyah Pulau Banyak. Which consists of 35 students. Data collection techniques using interviews, observation, documentation, and written test assessment. Before using the listening team learning model, the teacher still uses the conventional model, namely by using the lecture method in learning. So that students are not interested in understanding the learning material and this is very influential on student learning outcomes, namely only 33% of students who completed when I did the pre-test and 77% of students did not complete. From the observations, it was shown that students' responses to the use of the jigsaw learning model in learning showed a positive and enthusiastic attitude, all aspects had been met. The use of the listening team learning model can improve student learning outcomes from pre-cycle students who complete 33% of cycle I students who complete 62% of student mastery increases by about 29%, cycle II students who complete about 100%, from cycle I to cycle II students completeness increases about 38%. With this, the Jisaw learning model has succeeded in improving the learning outcomes of SKI subjects in class VIII MTs Swasta Tarbiyah Waladiyah Pulau Banyak.
Analisis Kesulitan Membaca Permulaan Pada Siswa Kelas I SD Negeri 101884 Limau Manis
Authors: Purnama Sari Betty , Dwi Dara Fitrah
Published: August 2022

Penelitian ini bertujuan untuk menganalisis proses dan hasil kesulitan membaca permulaan siswa kelas I SD Negeri 101884 Limau Manis yang berada di wilayah kota Medan Tanjung Morawah. Penelitian ini menggunakan jenis penelitian deskripsi dengan pendekatan kualitatif. Populasi dari penelitian ini adalah seluruh siswa kelas I SD Negeri 101884 Limau Manis pada semester genap tahun ajaran 2021/2022 yang berjumlah 60 siswa. Proses dan makna lebih ditonjolkan dalam penelitian kualitatif memiliki berbagai metode penelitian seperti obserpasi, wawancara,dan dokumentasi yang mana memerlukan alat bantu instrument itu sendiri. Seluruh siswa kelas I SD Negeri 101884 Limau Manis dengan jumlah 18 siswa, 13 siswa mengalami kesulitan membaca permulaan. Seluruh siswa kelas I SD Negeri 101884 Limau Manis dengan jumlah 30 siswa, terdapat 17 siswa memiliki kemampuan membaca permulaan yang cukup baik dan 13 siswa yang mengalami kesulitan membaca permulaan. Proses penelitian ini dimulai dengan memberikan tes membaca pada siswa, kemudian setelah aspek kesulitan diketahui, lalu diamati karakteristik siswa yang mengalami kesulitan membaca tersebut. Hasil penelitian menunjukkan bahwa aspek kesulitan tertinggi siswa dalam membaca permulaan adalah kesulitan dalam membaca kata yang tidak mempunyai arti dengan skor 16%. Kesulitan membaca permulaan selanjutnya yaitu pada aspek kelancaran membaca nyaring dan pemahaman bacaan dengan skor 27%. Kesulitan lain yang dialami peserta didik adalah kesulitan dalam membaca kata yaitu sebesar 33%. Lalu kesulitan pada aspek mengenal huruf dengan skor 51%. Aspek kesulitan membaca terakhir yaitu aspek menyimak atau pemahaman mendengar yaitu sebesar 79%. Karakteristik kesulitan membaca permulaan siswa kelas I SD Negeri 101884 Limau Manis yaitu: kesulitan mengidentifikasi huruf dan merangkai susunan huruf, membalik huruf, mengubah kata, menghilangkan huruf dalam susunan kata, mengucapkan kata salah, mengeja terbata-bata, kurang memperhatikan tanda baca tidak memahami isi bacaan, dan sulit konsentrasi
PREVENTION OF FALLS IN THE ELDERLY
Authors: Claudino do Nascimento Nathalia , Feitosa Rodrigues Lutigard , Torres Di Pace Maranhão Solange , De Lima Ferreira Mateus , Carolina Salustino dos Santos Maria
Published: August 2022

The elderly represent one of the phases of the human life cycle, they are more susceptible to falls, due to chronic diseases and the aging process itself. This study is reflective, synthesized according to the reading of articles, books and different contents in the year 2022. It was noticed that prevention is the best way to avoid further damage to the health of the elderly.
The Evaluation of Reactive Textile Dyes Regarding their Potential to Cause Organ-Specific Cyto- and Geno-Toxicity
Authors: Silva Enzo Zini Moreira , Sehr Andrea , Grummt Tamara , Oliveira Danielle Palma de , Leme Daniela Morais
Published: August 2022

The textile industry extensively uses synthetic chemicals such as dyes. Several studies report the deleterious effects (e.g., cell death and DNA damage) of dyes on humans. Humans can be exposed to toxic dyes by ingesting contaminated waters or dermal contact with colored garments. Thus, toxicity evaluations of textile dyes using organ-specific cell lines are relevant to estimate their hazard. Cyto- and geno-toxicity of the dyes Reactive Green 19 (RG19), Reactive Blue 2 (RB2), Reactive Blue 19 (RB19), Reactive Red 120 (RR120) and Reactive Orange 16 (RO16) were evaluated by the In Vitro MicroFlow® kit with immortalized human keratinocyte cell line (HaCaT) and immortalized human hepatic cell line (HepaRG). Concentration-dependent cytotoxicity was observed for HaCaT cells exposed to five of the six tested dyes (RB2, RB19, RR120, RO16), while in HepaRG cells, cytotoxic effects were only verified after exposure to RB19 and RO16 at the highest tested concentration (1000 Âµg/mL). Genotoxicity was not detected in any tested textile dyes under both test conditions (HaCaT and HepaRG). In conclusion, our data provide evidence that, although the tested reactive dyes are not genotoxic, which is in agreement with published literature, they can cause cytotoxicity in both target tissue, and the effect can be more severe in epidermal cells (HaCaT) than in liver cells (HepaRG). This differential cytotoxicity data emphasizes the need to assess the toxicity of textile dyes to the target organ specificity.
Editorial
Authors: Nilin Jeamylle , Fillmann Gilberto
Published: August 2022

In 2022, Ecotoxicology and Environmental Contamination - EEC, a scientific journal belonging to the Brazilian Society of  Ecotoxicology (ECOTOX-Brasil), originally called Journal of the Brazilian Society of Ecotoxicology (JBSE), celebrates its 17th anniversary. To continue promoting and expanding spaces for scientific dialogue, we initiated a new journal format with new sections and the opportunity to submit articles in both Portuguese and Spanish, in addition to English. The EEC editorial team greatly appreciates Dr. Charrid Resgalla’s dedication and effort as the head of the EEC in recent years. We are also grateful to the contribution of all associate editors in the editing of this volume. To remember EEC’s history, we have invited senior editor Gilberto Fillmann to inaugurate our editorial.
Penerapan Digital Content #CiptakanKebaikan sebagai Bentuk Promosi pada Platform Tiktok
Authors: Zulaikha Ihda 'Ainaya , Khotimah Khusnul
Published: August 2022

Tiktok is a social media that now has the potential to promote products ranging from goods, services, or information that can be delivered quickly. The context of communication teaches several important roles including about 'messages', how good message content will bring up a person's responsive attitude, so that messages in the realm of promotion on the Tiktok platform are to show content ideas in visual form. Problems or social phenomena regarding visual violence or cyberbullying are a form of shared unrest, so the Ministry of Information and Communication (KOMINFO) collaborates with Tiktok to promote a #CiptakanKebaikan campaign to provide understanding and create digital forms of conversation in the current era. This study uses a qualitative method where researchers see how this campaign is formed so as to form a Digital Literacy. The researcher uses the Critical Discourse Analysis approach as an accurate form to reflect on how the analysis is built in the campaign. The researcher analyzed the entire content regarding #CiptakanKebaikan to see how the implementation of this campaign could be utilized by Tiktok social media and the implications of that content for building Digital Literacy. The results of the research show that there are three content used in the #CiptakanKebaikan campaign including storytelling, sharing, and experience.
FAKTOR YANG BERHUBUNGAN DENGAN PEMBERIAN IMUNISASI PENTABIO DI DESA BATANG KUIS PEKAN
Authors: Tarigan Suci Nanda Resti
Published: August 2022

Basedon surveillance data from the Ministry of Health 2020, the situation of diphtheria in Indonesia, in2019 the number of suspected diphtheria cases was 944 casesspread across 25 provinces, while upto May 2020, there were 129 cases of suspected diphtheria found in 16 provinces. To prevent the incidence of diphtheria, the government is targeting the achievement of basic immunization coverage. The type of researchused in this research is analytic which aims to determine the factors related to the provision of Pentabio immunization in Batang Kuis Pekan Village in2020. Mothers who have babies (11-12 months) in Batang Kuis Pekan Villageare 137 people, The sampling technique in this study used simple random sampling totaling 57 people. Data analysis using Chi- square analysis. The results of the study found that there was a significant relationship between knowledge (p-value = 0.037) and family  support (p-value 0.05) with the provision of Pentabio immunization in Batang Kuis Pekan Village in2020. From the results In this study, respondents should increase their knowledge that is less and better and  change  their  behavior,  respondents  can  increase  their  knowledge   about immunization through health personnel facilities, orexisting books so that they want to administer pentabio immunization.
PELAYANAN BIDAN PADA MASA ADAPTASI KEBIASAAN BARU DI RSUD. DOLOK SANGGUL
Authors: Hutajulu Johansen , Simanjuntak Novita K , Ompusunggu Tanti Yosepha
Published: August 2022

The Corona Virus Disease-2019 (covid-19) pandemic has resulted in many changes to the service order as a hospital entrance. Midwives must adjust services to patients so as to minimize the risk of transmission of COVID-19. The purpose of this study was to explore the experience of midwives in providing hospital services during the adaptation period to new habits at the Dolok Sanggul Hospital. This research is an exploratory qualitative research with a phenomenological approach. The population in this study were all midwives at the Dolok Sanggul Hospital. The technique of taking participants was done by purposive sampling as many as 6 participants. Data collection using interviews. The data were analyzed using the trial version of Nvivo 12 software. The results of this study obtained 7 (seven) , namely 1) Implementing infection prevention and control procedures, 2) Implementing work safety and safety procedures, 3) Implementing 3M procedures, 4) Anticipating the transmission of covid-19, 5) Providing services to Covid-19 patients. 19 and non-covid-19, 6) Limiting access to hospitals, 7) Utilizing information technology for health service innovation. It is recommended that midwives continue to carry out infection control and prevention procedures, occupational safety and health as well as 3M procedures (washing hands, wearing masks, maintaining distance) to anticipate the transmission of COVID-19.
Simulations of winter ozone in the Upper Green River Basin, Wyoming, using WRF-Chem
Authors: Ghimire Shreta , Lebo Zachary J. , Murphy Shane , Rahimi Stefan , Tran Trang
Published: August 2022

Abstract. In both the Upper Green River Basin (UGRB) of Wyoming and the Uintah Basin of Utah, strong wintertime ozone (O3) formation episodes leading to O3 concentrations exceeding the 8-hour O3 NAAQS (70 ppb) have been observed over the last two decades. Wintertime O3 events in the UGRB were first observed in 2005 and since then have continued to be observed intermittently when meteorological conditions are favorable, despite significant efforts to reduce emissions. While O3 formation has been successfully simulated using observed volatile organic compound (VOC) and nitrogen oxide (NOX) concentrations, successful simulation of these wintertime episodes using emission inventories in a 3-D photochemical model has remained elusive. An accurate 3-D photochemical model driven by an emission inventory is critical to understand which emission sources have the most impact on O3 formation. In the winter of 2016–2017 (December 2016–March 2017) several high O3 events were recorded with concentrations exceeding 70 ppb. This study uses the Weather Research Forecasting model with chemistry (WRF-Chem) to simulate one of the high O3 events observed in the UGRB during March of 2017. The WRF-Chem simulations were carried out using the 2014 edition of the Environmental Protection Agency National Emissions Inventory (EPA-NEI 2014v2), which includes estimates of emissions from non-point oil and gas production sources. Simulations were carried out with two different chemical mechanisms: the Model for Ozone and Related Chemical Tracers (MOZART) and the Regional Atmospheric Chemistry Mechanism (RACM), and the results were compared with the observed data from 7 weather and air quality monitoring stations in the UGRB operated by Wyoming Department of Environmental Quality (WYDEQ). The simulated meteorology compared favorably to observations in terms of predicting temperature inversions and surface temperature and wind speeds. Notably, because of snow cover present in the basin, the photolysis surface albedo was modified in all simulations. Without this modification, none of the simulations formed O3 exceeding 70 ppb, though the models were relatively insensitive to the exact photolysis albedo if it was over 0.65. The MOZART simulation produced more O3 in the basin than the RACM simulation and compares better with the observations. However, while O3 precursors NOX and NMHC are predicted similarly in simulations with both chemistry mechanisms, simulated NMHC mixing ratios are a factor of six lower than the observations, while NOX mixing ratios are also underpredicted but are much closer to the observations within the region of oil and gas production. The results show that both the RACM and MOZART chemical mechanisms were able to produce O3 even though the NMHC mixing ratios in the model were a factor of six too low, an intriguing result for future studies.
Sensitivity analysis of an aerosol-aware microphysics scheme in Weather Research and Forecasting (WRF) during case studies of fog in Namibia
Authors: Weston Michael John , Piketh Stuart John , Burnet Frédéric , Broccardo Stephen , Denjean Cyrielle , Bourrianne Thierry , Formenti Paola
Published: August 2022

Abstract. Aerosol-aware microphysics parameterisation schemes are
increasingly being introduced into numerical weather prediction models,
allowing for regional and case-specific parameterisation of cloud
condensation nuclei (CCN) and cloud droplet interactions. In this paper, the Thompson aerosol-aware microphysics scheme, within the Weather Research and Forecasting (WRF) model, is used for two fog cases during September 2017 over Namibia. Measurements of CCN and fog microphysics were undertaken
during the AErosols, RadiatiOn and CLOuds in southern Africa (AEROCLO-sA)
field campaign at Henties Bay on the coast of Namibia during September 2017. A key concept of the microphysics scheme is the conversion of water-friendly aerosols to cloud droplets (hereafter referred to as CCN activation), which could be estimated from the observations. A fog monitor 100 (FM-100) provided cloud droplet size distribution, number concentration (Nt), liquid water content (LWC), and mean volumetric diameter (MVD). These measurements are used to evaluate and parameterise WRF model simulations of Nt, LWC, and MVD. A sensitivity analysis was conducted through variations to the initial CCN concentration, CCN radius, and the minimum updraft speed, which are important factors that influence droplet activation in the microphysics scheme of the model. The first model scenario made use of the default settings with a constant initial CCN number concentration of 300 cm−3 and underestimated the cloud droplet number concentration, while the LWC was in good agreement with the observations. This resulted in droplet size being larger than the observations. Another scenario used modelled data as CCN initial conditions, which were an order of magnitude higher than other
scenarios. However, these provided the most realistic values of Nt,
LWC, MVD, and droplet size distribution. From this, it was concluded that CCN activation of around 10 % in the simulations is too low, while the
observed appears to be higher reaching between 20 % and 80 %, with a mean (median) of 0.55
(0.56) during fog events. To achieve this level of activation in the model,
the minimum updraft speed for CCN activation was increased from 0.01 to 0.1 m s−1. This scenario provided Nt, LWC, MVD, and droplet size distribution in the range of the observations, with the added benefit of a realistic initial CCN concentration. These results demonstrate the benefits of a dynamic aerosol-aware scheme when parameterised with observations.
On the use of high-frequency surface wave oceanographic research radars as bistatic single-frequency oblique ionospheric sounders
Authors: Kaeppler Stephen R. , Miller Ethan S. , Cole Daniel , Updyke Teresa
Published: August 2022

Abstract. We demonstrate that bistatic reception of high-frequency oceanographic radars can be used as single-frequency oblique ionospheric sounders. We develop methods that are agnostic of the software-defined radio system to estimate the group range from the bistatic observations. The group range observations are used to estimate the virtual height and equivalent vertical frequency at the midpoint of the oblique propagation path. Uncertainty estimates of the virtual height and equivalent vertical frequency are presented. We apply this analysis to observations collected from two experiments run at two locations in different years, but utilizing similar software-defined radio data collection systems.
In the first experiment, 10 d of data were collected in March 2016 at a site located in Maryland, USA, while the second experiment collected 20 d of data in October 2020 at a site located in South Carolina, USA. In both experiments, three Coastal Oceanographic Dynamics and Applications Radars (CODARs) located along the Virginia and North Carolina coast of the US were bistatically observed at 4.53718 MHz.
The virtual height and equivalent virtual frequency were estimated in both experiments and compared with contemporaneous observations from a vertical incident digisonde–ionosonde at Wallops Island, VA, USA. We find good agreement between the oblique CODAR-derived and WP937 digisonde virtual heights. Variations in the virtual height from the CODAR observations and the digisonde are found to be nearly in phase with each other.
We conclude from this investigation that observations of oceanographic radar can be used as single-frequency oblique incidence sounders.
We discuss applications with respect to investigations of traveling ionospheric disturbances, studies of day-to-day ionospheric variability, and using these observations in data assimilation.
U and Th content in magnetite and Al-spinel obtained by wet chemistry and laser ablation methods: implication for (U-Th)/He thermochronometer
Authors: Corre Marianna , Agranier Arnaud , Lanson Martine , Gautheron Cécile , Brunet Fabrice , Schwartz Stéphane
Published: August 2022

Abstract. Magnetite and spinel thermochronological (U-Th)/He dates obtained in different geological contexts often present significantly dispersed values, that could be related to the low concentration of U and Th isotopes, the lack of standard samples or other parameters. For this purpose, this study focuses on the analysis of U and Th content variability. U and Th in magnetite (natural and synthetic) and in natural Al-spinel samples containing different amounts of U and Th, from 0.02 to 116 µg/g, are analyzed using both wet chemistry and in-situ laser ablation extraction methods. To increase the number of reference samples, two U-Th doped nanomagnetite powders were synthesized and the U and Th concentration were firstly determined using wet chemistry extraction (U and Th of NMA is ~40 µg/g and NMB ~0.1 µg/g). We show that for both U and Th analyses, the obtained reproducibility of the wet chemistry protocol depends on their concentration and is below 11 % for U-Th values higher than 0.4 µg/g and reaches 22 % for U-Th content lower than 0.1 µg/g. It implies that (U-Th)/He thermochronological dates cannot be more reproducible than 24 % for magnetite containing less than 0.1 µg/g of U and Th, explaining part of the natural date variability. Secondly, U and Th concentration extracted by laser ablation on natural magnetite and Al-spinel samples were calibrated using both silicate glass standards and synthetic magnetite samples. The determined U and Th content using NMA sample give similar values than the one obtained by wet chemistry extraction but is 30 % overestimated using the glass standard samples. These results highlight the impact of matrix effect on the determination of the U-Th content and we recommend to use a well-characterized magnetite sample for calibrating the U-Th signals by laser ablation. In addition, the scatter on the (U-Th)/He magnetite dates can be expected to be ~20 % if the U and Th contents are determined by laser ablation. Such a precision level is not that different to the one obtained using wet chemistry extraction, opening the use the use of laser ablation extraction method for determining (U-Th)/He dates. In the absence of spinel reference for U and Th, the silicate glasses and NMA samples was used for laser ablation calibration and U and Th content and are of ~30 % lower compared to values obtained using wet chemistry extraction. This discrepancy underlines the importance of using a standard with a composition close to that of the mineral of interest. Although magnetite and Al-spinel have related crystal-structures, the magnetite standard is not appropriate for U and Th analysis in Al-spinel.
Hydroclimate reconstruction during the last 1000 years inferred by mineralogical and geochemical composition of a sediment core from Lake-Azuei (Haiti)
Authors: Noncent David , Sifeddine Abdelfettah , Emmanuel Evens , Cormier Marie-Helene , Briceño-Zuluaga Francisco J. , Mendez-Milan Mercedes , Turcq Bruno , Caquineau Sandrine , Valdés Jorge , Bernal Juan Pablo , King John W. , Djouraev Irina , Cetin Fethiye , Sloan Heather
Published: August 2022

Abstract. This study aims to reconstruct the hydro-climatic variations over the last 1000 yrs in Haiti using mineralogical and geochemical composition of well dated lacustrine sediment core retrieved from Lake Azuei. The results show changes in sedimentological processes linked to environmental and climatic variations. The general pattern suggests a wetter Medieval Climate Anomaly (MCA), drier Little Ice Age (LIA), high climate variability during the MCA-LIA transition and more anthropogenic impacts that dominate natural climate during the Current Warm Period (CWP). The MCA period (~1000–1100 CE) thus appears marked by increase sedimentation rate supported by higher terrigenous input linked to erosive events and consequently increases in precipitation. During the LIA, particularly from ~1450 CE to 1600 CE, there is a great variation towards a decrease of terrigenous input, which is related to a decrease on sedimentation rate and increase Mg-calcite precipitation, suggesting less precipitation and high evaporation respectively during dry climate conditions. The MCA-LIA transition (~1200–1400 CE) is characterized by variations between terrigenous input, Mg-calcite neoformation and organic matter deposition, which indicate succession of dry and humid conditions. The CWP (1800–2000 CE) shows a progressive increase on sedimentation rate and decrease of grey level, which indicate more organic matter sedimentation as consequence of anthropogenic activities in the surrounding basin of the lake. High-resolution grey level analysis, which reflects principally variations in terrigenous input, carbonate mineral neoformation and organic matter deposition, shows that the AMO, NAO, PDO and ENSO are the principal modes affecting the hydro-climatic changes in Haiti during the last millennium. In addition, temporal correlation of other Caribbean paleoclimate records with our geochemical and mineralogical data, suggests that trends observed in Lake Azuei were controlled by regional climate, likely associated with shifts in the position of the ITCZ.
The signature of NAO and EA climate patterns on the vertical structure of the Canary Current Upwelling System
Authors: Georg Tina , Neves Maria Conceição , Relvas Paulo
Published: August 2022

Abstract. The current study aims to analyse the vertical structure of the ocean during upwelling events using in situ and modelled data. Additionally, the influence of climate patterns, namely the North Atlantic Oscillation (NAO) and the East Atlantic (EA) pattern, on the vertical structure and their impact on the upwelling activity is assessed for a period of 25 years (1993–2017). The study focuses on the central part of the Canary Current (25–35° N) with persistent upwelling throughout the year with an annual cycle and strongest events from June to September. Upwelling is determined using three different approaches: One index is calculated based on temperature differences between the coastal and the offshore area and two based on wind data and the resulting Ekman transport. Different data sets were chosen according to the indices. Stable coastal upwelling can be observed in the study area for the analysed time span with differences throughout the latitudes and a time lag of four to five months between the wind and the temperature-based indices. A deepening of the isothermal layer depth and a cooling of temperatures is observed in the vertical structure of coastal waters representing a deeper mixing of the ocean and the rise of cooler, denser water towards the surface. During years of a positive NAO, corresponding to a strengthening of the Azores High and the Iceland Low, stronger winds lead to an intensification of the upwelling activity, an enhanced mixing of the upper ocean and a deeper (shallower) isothermal layer along the coast (offshore). The opposite is observed in years of negative NAO. Both effects are enhanced in years with a coupled, opposite phase of the EA pattern and are mainly visible during winter months where the effect of both indices is the greatest. The study therefore suggests stronger upwelling activities in winters of positive North Atlantic Oscillation coupled with a negative East Atlantic pattern and emphasizes the importance of interactions between the climate patterns and upwelling.