bluuebunny/crossref_metadata_2025 huggingface dataset:
STEM SerialED: achieving high-resolution data for ab initio structure determination of beam-sensitive nanocrystalline materials
Authors: Hogan-Lamarre Pascal , Luo Yi , Bücker Robert , Miller R. J. Dwayne , Zou Xiaodong
Published: September 2023

Serial electron diffraction (SerialED), which applies a snapshot data acquisition strategy on each crystal, was introduced to tackle the problem of radiation damage in the structure determination of beam-sensitive materials by three-dimensional electron diffraction (3D ED). The snapshot data acquisition in SerialED can be realized both in transmission and scanning transmission electron microscopes (TEM/STEM). However, the current SerialED workflow based on STEM setups requires special external devices and software, which brings challenges for its broader adoption. Here, we present a simplified experimental implementation of STEM-based SerialED on Thermo Fisher Scientific STEMs using common proprietary software interfaced through Python scripts to automate data collection. Specifically, we utilize TEM Imaging and Analysis (TIA) scripting and TEM scripting to access the STEM functionalities of the microscope, and DigitalMicrograph (DM) scripting to control the camera for snapshot data acquisition. Data analysis adapts the existing workflow using the software CrystFEL developed for serial X-ray crystallography. Our workflow for SerialED can be used on any Gatan or Thermo Fisher Scientific camera. We apply this workflow to collect high-resolution STEM SerialED data from two aluminosilicate zeolites, Zeolite Y and ZSM-25, and demonstrate, for the first time, ab initio structure determination through direct methods using the STEM SerialED data. Zeolite Y is relatively stable under the electron beam, and SerialED data extend to 0.60 Å. We show that the structural model obtained using SerialED data merged from 358 crystals is nearly identical to that using continuous rotation electron diffraction (cRED) data from one crystal. This demonstrates that accurate structures can be obtained from SerialED. Zeolite ZSM-25 is very beam-sensitive and has a complex structure. We show that SerialED greatly improves data resolution of ZSM-25, compared to serial rotation electron diffraction (SerialRED), from 1.50 Å to 0.90 Å. This allows for the first time the use of standard phasing methods such as direct methods for ab initio structure determination of ZSM-25.
Implementation of Machine Learning-Based System for Early Diagnosis of Feline Mammary Carcinomas through Blood Metabolite Profiling
Authors: Kulkarni Vidhi , Tsigelny Igor , Kouznetsova Valentina
Published: September 2023

Feline mammary carcinoma (FMC) is a prevalent and fatal carcinoma that predominantly affects unsprayed female cats. FMC is the third most common carcinoma in cats but is still underrepresented in research. Current diagnosis methods include physical examinations, imaging tests, and fine-needle aspiration. The diagnosis through these methods is sometimes delayed and unreliable, leading to increased chances of mortality. The objective of this study was to identify the biomarkers, including blood metabolites and genes, related to feline mammary carcinoma, study their relationships, and develop a machine-learning (ML) model for the early diagnosis of the disease. We analyzed blood metabolites of felines with mammary carcinoma using the pathway analysis feature in the MetaboAnalyst software. The metabolic pathways that were elucidated to be associated with this disease include Alanine, aspartate and glutamate metabolism, Glutamine and glutamate metabolism, Arginine biosynthesis, and Glycerophospholipid metabolism. Furthermore, we also elucidated several genes that play a significant role in the development of FMC, such as ERBB2, PDGFA, EGFR, FLT4, ERBB3, FIGF, PDGFC, PDGFB through STRINGdb, a database of known and predicted protein–protein interactions, and MetaboAnalyst 5.0. We utilized ML methods to recognize FMC using blood metabolites of sick patients. The best-performing model was able to predict metabolite class with an accuracy of 85%. In conclusion, our findings demonstrate that the identification of the biomarkers associated with FMC and the affected metabolic pathways can aid in the early diagnosis of feline mammary carcinoma.
Molecular modification for Synergism against Drug Resistant Bacteria: A Combinatorial Synthesis Approach using Calitropis Procera Extract with Ampicillin.
Authors: Gideon Mathew , Ladan Zakari
Published: September 2023

Identifying novel methods to develop lead compounds for selectivity, efficacy, and safety for a clinical trial candidate remains a scientific challenge, Natural products offer novel pharmacophores, chemotypes, and scaffolds that can be amplified into efficient drugs for various infections and disease. This study present a simple, basic and eco-friendly method for boosting the antimicrobial activity of two less effective antimicrobial agents to obtain repetitive constant synergism in combat drug resistant clinical bacteria. Aqueous extract of fresh C. procera leaves and flowers was made to react with 1 mg/mL ampicillin solution under heat and acidic condition. The prepared sample was synergistic and highly susceptible to resistant S. aureus and Salmonella spp, moving their zones of inhibition from 0 mm to 16.8 mm and from 5.3 mm to 21.4 mm respectively. Gas chromatography mass spectrometry, GC-MS analysis reveals the presence of 53 phytochemicals, oleic acid 13.04 %, 1,1,1,3,5,5,7,7,7-Nonamethyl-3-(trimethylsiloxy)tetrasiloxane 9.50 %, 9-Heptadecanone 3.75%, Cystamine 3.35 % and Tetrahydro-4H-pyran-4-ol 3.15 % were where the five (5) most abundant phytochemicals. Eighteen (18) out of the 53 phytochemicals were reported to have known biological activities thus, some undergo molecular transformation to a new molecule and/or analogue to existing biologically active compound due to the reaction condition used. Farnesol, Cystamine, Cystine, Metaraminol, dl-phenylephrine and two different substituted amphetamine compounds were discovered. Three (3) phytochemicals present were reported to exhibit anticancer properties (Farnesol, 4-amino-1-pentanol and the of imidazole derivative similar to the drug Ribavir). The results of this study reveals that medicinal plants phytochemicals can be used in synthetic combination reactions with themselves or other drug/reagent to produce vast array of compounds with good pharmacological activities or compounds which can be used as starting material, intermediates or derivatives in pharmaceutical production.
Contrast Mechanism of Osmium Staining in Electron Microscopy of Biological Tissues
Authors: Li Ruiyu , Wildenberg Gregg , Boergens Kevin , Yang Yingjie , Weber Kassandra , Rieger Janek , Arcidiacono Ashley , Klie Robert , Kasthuri Narayanan , King Sarah B.
Published: September 2023

Electron imaging of biological samples stained with heavy metals has enabled visualization of nanoscale subcellular structures critical in chemical-, structural-, and neuro-biology. In particular, osmium tetroxide has been widely adopted for selective lipid imaging. Despite the ubiquity of its use, the osmium speciation in lipid membranes and the mechanism for image contrast in electron microscopy (EM) have continued to be open questions, limiting efforts to improve staining protocols and improve high-resolution imaging of biological samples. Following our recent success using photoemission electron microscopy (PEEM) to image mouse brain tissues with a subcellular resolution of 15 nm, we have used PEEM to determine the chemical contrast mechanism of Os staining in lipid membranes. Os (IV), in the form of OsO2, generates aggregates in lipid membranes, leading to a strong spatial variation in the electronic structure and electron density of states. OsO2 has a metallic electronic structure that drastically increases the electron density of states near the Fermi level. Depositing metallic OsO2 in lipid membranes allows for strongly enhanced EM signals of biological materials. This understanding of the membrane contrast mechanism of Os-stained biological specimens provides a new opportunity for the exploration and development of staining protocols for high-resolution, high-contrast EM imaging.
Automatic Mechanism Generation Involving Kinetics of Surface Reactions with Bidentate Adsorbates
Authors: Kreitz Bjarne , Blöndal Katrin , Badger Kirk , West Richard H. , Goldsmith C. Franklin
Published: September 2023

New features have been added to the open-source Reaction Mechanism Generator (RMG) that enhance its ability to handle multidentate adsorbates. New reaction families and improved thermophysical estimation routines have been added, based upon ab-initio data from 26 reactions involving CxOyHz bidentate adsorbates with two heavy atoms on Pt(111). Non-oxidative dehydrogenation of ethane over Pt(111) is used as a case study to demonstrate the effectiveness of these new features. RMG not only discovered the pathways from prior literature, but it also uncovered new elementary steps involving abstraction reactions. Various mono- and bimetallic catalysts for this process were screened using linear scaling relations within RMG, where a unique mechanism is generated for each catalyst. These results are consistent with prior literature trends, but they add additional insight into the rate determining steps across the periodic table. With these additions, RMG can now explore more intricate reaction mechanisms of heterogeneously catalyzed processes for the conversion of larger molecules, which will be particularly important in fuel synthesis.
ELECTRONIC STRUCTURE OF HOMOLOGICAL SERIES OF PRIMARY AMINES AND AMINYL RADICALS
Authors: Чернова Е.М. , Орлов М.Ю. , Русакова Н.П. , Орлов Ю.Д.
Published: September 2023

Электронное строение молекул моноалкиламинов R-NH2 и соответствующих радикалов R-N●H изучено в рамках квантовой теории атомов в молекулах. Представлены значения зарядов и объемов атомных групп. Проведено сравнение влияния на углеводородную цепь функциональных групп, содержащих атомы O-, N-, S-.

The electronic structure of the molecules of monoalkylamines R-NH2 and the corresponding radicals R-N●H has been studied in the framework of the quantum theory of atoms in molecules. The values of charges and volumes of atomic groups are presented. The effect of functional groups containing O-, N-, S- atoms on the hydrocarbon chain is compared.
Developing college student intercultural competence in a childhood diversity course: A pilot study
Authors: Coyl-Shepherd Diana
Published: September 2023

The primary aim of this study was to investigate pedagogical mechanisms that promote student understanding of diversity and intersectionality in national and global childhood experiences in order to foster openness, acceptance of diversity, and civic engagement. In this mixed-methods study, participants included 127 undergraduate students in a child development diversity (CDD) course and a control group of 63 undergraduate students in a research methods psychology (RMP) course. Students in both groups self-rated their knowledge of 18 diversity topics, their Openness to diversity, Acceptance of cultural differences, Awareness of racism and sexism, and Plans to advocate for others (OAAP variables). Quantitative results showed significant increases in CDD course groups’ knowledge of all topics from beginning to semester-end and greater knowledge compared with the RMP course control group. For CDD course students, diversity knowledge was positively and more strongly correlated with their OAAP scores. Qualitative written responses from CDD course students illustrate their perceptions of the importance of intercultural awareness and knowledge of childhood intersectionality and diversity, the effectiveness of specific content delivery methods, and how they relate to their advocacy and volunteer plans.
Undergraduate students' attitudes towards marriage equality: Changes in an introductory family science course
Authors: DiGregorio Nikki , Maurer Trent
Published: September 2023

This study explored undergraduate students’ changes in attitudes toward marriage equality in an introductory family science course. Students enrolled in the course were exposed to teaching activities centered largely around prejudice and discrimination to examine their effectiveness in facilitating the development of more positive attitudes toward marriage quality. The results of quantitative analyses revealed that substantial numbers of students became more supportive of marriage equality over time in this course. Qualitative analyses of written open-ended student responses utilizing the constant comparative method resulted in three emergent themes: support of marriage equality, increased understanding of marriage equality, and opposition to marriage equality. Collectively, the findings of this exploratory study indicate that the teaching method utilized was effective in fostering the development of more positive attitudes toward marriage equality. Implications for future research, replication, and adaptation in other disciplines are discussed.
Virtual/Online Music Festivals: New Contexts for Substance Use Facilitated by the COVID-19 Pandemic
Authors:   , Gurr Solomon
Published: September 2023

Virtual music festivals, online adaptions of in-person music festivals, have increased in popularity since the COVID-19 pandemic began due to social gathering restrictions cancelling in-person music festivals at this time. These events have received little attention in the literature which focuses on alcohol and/or drug (AOD) use, and it is largely unknown how AOD consumption presents in this context. The new heights of popularity and immersivity these events experienced during the pandemic means they may be a new context for AOD use – one that currently lacks a specific framework for reducing harm. This study aimed to explore experiences of virtual festival attendees using AODs, to find if these attendees consider harm reduction practices, and to highlight any utilised strategies. Informed by a phenomenological perspective, this study involved interviewing six New Zealanders aged between 24 and 50 (3 females, 2 males, 1 non-binary) who attended these events since the pandemic began to learn about these experiences. A thematic analysis of interview transcripts identified three themes. ‘Experiencing Festivals from Home’ encapsulated how participants felt the home setting brought changes to ways they used AODs compared to inperson festivals, with AOD use being generally determined by how social their experience was. ‘Enhancing the Experience with AODs’ captured how participants would use AODs to enhance various aspects of the festival, including enhancement of their physical and virtual spaces, music from specific artists, and how AODs were used to enjoy their psychoactive effects. The final theme, ‘Reducing Harm’, covered how participants were largely aware of the general risks that come with AOD use, with many describing how their utilisation of ‘basic’ harm reduction strategies helped them reduce risk and maintain control of their use. These findings contribute to the literature as little research exists on this topic, providing groundwork for future studies in this area while highlighting the need for harm reduction information to be available for those attending virtual festivals.
The Paradox of Downstream Mining Industry Development in Indonesia: Analysis and Challenges
Authors: Krustiyati Atik , Gea Gita Venolita Valentina
Published: September 2023

Development of downstream on the mining industry has been encouraged by the government of Indonesia these past years. With the increasing demand for nickel ore, the government focused on implementing downstream in this sector. Establishing an export ban and domestic processing requirement on nickel ore caused the EU to challenge Indonesia before the DSB WTO. In its report to the Panel, it was concluded that Indonesia had violated the provisions of GATT 1994. While it is understandable that Indonesia has absolute sovereignty over its natural resources, it is also bounded to international organisations and regulations, for it has expressed its consent. This paper aims to examine the analysis by the Panel on what caused Indonesia to decide as the losing party and how Indonesia would implement the development downstream in the middle of its sovereignty and obligations on an international level. Through a juridical normative method, it is concluded that Indonesia had failed to comply with the provisions of GATT 1994 that obliged it. It does not mean it has no sovereignty towards its natural resources, for it has agreed to be bound by the provisions. In order to exercise downstream development, it is recommended that Indonesia create national policies or regulations related to adhering to the provisions of the WTO. A cautious approach to governing the downstream may prevent potentially damaging disputes.
Improving Student Learning Outcomes by Implementing Synectic Learning Strategies
Authors: Sitepu Elisabeth
Published: September 2023

This research aims to improve student learning outcomes by using synectic learning strategies at Jambi Medan Private High School. The population is all class XI high school students consisting of 2 classes. Samples were taken randomly in 2 classes consisting of an experimental class and a control class. The data observed were student learning outcomes, which were collected through a multiple-choice test of 25 questions consisting of 5 answer options, which had been tested for validity, reliability, level of difficulty and differentiating power of the test. The data obtained were analyzed using the t test, where the normality and homogeneity of the data had previously been tested. The experimental class learning outcomes averaged pretest (28.42 ± 6.71) and average posttest (73.51 ± 5.64) with an increase in Gain learning outcomes of 67% while the control class learning outcomes averaged pretest (21 .62 ± 6.48) and the posttest average (69.53 ± 5.96) with an increase in Gain learning outcomes of 61%. Hypothesis testing was carried out at a significance level of α = 0.05 using a one-sided t-test, namely the right side where tcount > ttable (2.85 > 1.67), which means Ho was rejected and Ha was accepted. By looking at the results of this research, it can be concluded that the learning outcomes of students who are treated through the application of Synectic learning strategies are higher than those using conventional teaching
Uma Análise das Características de Especificação de Requisitos de Software em Normas de Ambientes Regulados
Authors: Marques Johnny Cardoso
Published: September 2023

Engenharia de Requisitos é o conjunto de atividades envolvidas no gerenciamento, levantamento, documentação e manutenção de um conjunto de requisitos para um produto. O termo Engenharia envolve o uso de técnicas sistemáticas de repetibilidade para garantir que os Requisitos de Software sejam completos, consistentes, válidos e verificáveis. A Especificação de Requisitos de Software é um processo organizado orientado para definir, documentar e manter os Requisitos de Software durante o ciclo de vida de desenvolvimento. Muitos autores sugerem que os requisitos devem sempre focar suas declarações no que o produto de software precisa abordar, sem especificar como implementá-las. No entanto, o detalhamento dos Requisitos de Software é influenciado por vários fatores, tais como: pensamentos organizacionais; padrões de especificação existentes; e necessidades regulatórias. Este trabalho se enquadra exatamente nas necessidades regulatórias, onde são apresentadas e exploradas as características de Especificação de Requisitos de Software em Ambientes Regulados como aeronáutica, ferroviária e médica. Este artigo apresenta brevemente as três normas utilizadas nestes ambientes regulamentados (RTCA DO-178C, IEC 62279 e IEC 62304) e analisa suas similaridades do ponto de vista da Especificação de Requisitos.
Requirements Communication in Safety-Critical Systems
Authors: Vilela Jessyka , Castro Jaelson , Martins Luiz Eduardo G. , Gorschek Tony , Almendra Camilo
Published: September 2023

Safety-critical systems (SCS) are mainly controlled by software. Accordingly, the development of these systems must be carefully planned since inadequate or misunderstood requirements have been recognized as the major cause of a signifficant proportion of accidents and safety-related catastrophes. Objective: We investigate the integration and requirements communication in the requirements engineering (RE)process among different parties when developing SCS. Method:We used a Systematic Mapping Study as the basis for our work. Results: We analyze the challenges and needs involved, application context, research type, evaluation methods, type of contribution, domain, requirements activity as well as languages and tools used to specify safety requirements. Furthermore, we also analyze stakeholders involved, communication format, and for what safety standards have the approaches been proposed. Conclusions: We believe the results of such a study will benefit both researchers and practitioners. This information contributes to setting up possible collaborative networks and as a reference when developing new research projects.
Handebol escolar: Propostas Metodológicas da Iniciação Lúdica à preparação de equipes escolares de competição
Authors: Reis Ivan Gonçalves
Published: September 2023

O aprofundamento do conhecimento é imprescindível ao ser humano! Mergulhar em todas as áreas é possível sim, para tanto, precisamos ter coragem, determinação e, não desistirmos no primeiro obstáculo que surgir como intransponível em nossa frente.
Durante muitos séculos, o conhecimento se arrastou na sua evolução, porém, no século XX , com os movimentos feministas crescendo a cada dia, o homem aos poucos reconhecendo o empoderamento da mulher no mercado de trabalho e o fortalecimento do processo de globalização dos meios de comunicação de todas as espécies de veiculação, possibilitou que os profissionais de diversas áreas; em questão especial nessa obra, o Professor de Educação Física, expandisse seus conhecimentos para uma melhor atuação no mercado de trabalho, fatos esses que vem se ratificando no século XXI.
Vale salientar também, que toda a trajetória de expansão do conhecimento do professor de Educação Física, sempre esbarrou em dificuldades enfrentadas por este profissional por ser de uma área da educação em que os governantes teimam em ignorar a sua devida valorização, esquecendo que toda e qualquer profissão passa por uma sala de aula sob a regência de um professor.
Sabemos que os avanços tecnológicos evidenciam possibilidades de expansão das mais variadas formas de conhecimento, porém, havemos de concordar que ainda
existem carências muito grandes de acesso dessas informações tecnológicas em muitos municípios do território brasileiro, fazendo com que os atores sociais abandonem suas tribos em busca de novidades para expandirem seus conhecimentos em locais que facilitem os acessos tecnológicos. E, nessa ótica, encontra-se o professor de Educação Física. Portanto, pensando em fatores expostos nesse texto, nas experiências vivenciadas ao longo de 42 anos como Professor de educação Física em todos os níveis de ensino, com ênfase de 31 anos de escola pública, professor da disciplina handebol do ensino superior, ex-técnico escolar da modalidade, ex-técnico e auxiliar técnico de clubes e seleções regionais e universitárias, é que decidi que ainda havia tempo de colaborar com os meus conhecimentos adquiridos em prol do professor de Educação Física e abnegados do desporto handebol.
Acute fatty liver of pregnancy, report of two cases
Authors: Amjoud Hassan , Benksim Abdelhafid , Chemlal Yassine , Elazaoui Yassir , Achbani Abderrahmane
Published: September 2023

Acute fatty liver of pregnancy (AFLP) is a rare and potentially fatal disease that occurs in the 3rd trimester of pregnancy. This article presents two clinical cases of AFLP and provides a review of the literature on this pathology. Diagnosis of AFLP is based on clinical, laboratory and radiological criteria, and treatment involves early recognition of the condition with delivery and full supportive maternal care are extremely important for the outcomes of both mother and child. However, AFLP can lead to serious complications. A better understanding of this pathology is needed to improve the prognosis and survival of AFLP patients.
The impact of COVID-19 and anti-immigration policy on an undocumented student in the United States: a qualitative case study
Authors: Park Chulwoo , Shimada Shannon , Angelica Patricia
Published: September 2023

Background

The change of Deferred Action for Childhood Arrivals (DACA) program has significantly impacted DACA students’ mental health in the United States. The study aimed to conduct a qualitative case study for understanding the effects of DACA program on one undocumented college student’s life during the COVID-19 pandemic.

Methods

We conducted a two-component qualitative case study, the online survey and the subsequent in-depth interview, with a DACA college student, Leah (pseudonym), in California who was in an ongoing fear of deportation before and during the COVID-19 pandemic. We used Questionnaire-9 (PHQ-9) and General Anxiety Disorder-7 (GAD-7) in the online survey to measure her level of depression and anxiety. QSR NVivo was used to analyze the verbatim transcription.

Results

Leah’s anxiety and depression level just before the Supreme Court’s decision to the DACA termination in June 2020 was higher than during the COVID-19 pandemic in 2021. Leah’s concern still remained due to the uncertain legal status in the United States even after the presidential election.

Conclusions

During 2020-2022, the anti-immigration policy, the COVID-19 pandemic, and the presidential election has impacted a DACA student’s mental health status. However, because of the unstable legal status and fear of deportation in the United States, our participant’s anxiety and depression level maintained high. From our participant’s standpoint, more policy support is needed to sustain her legal status, financial stability, and mental health during the pandemic.
Angol en La Frontera. Desarrollo urbano y arquitectura pública, una modernidad al margen
Authors: Fuentes Hernández Pablo , Vargas Castillo Luis Felipe , Sáez Orrego Bárbara
Published: September 2023

La Frontera, el resistido territorio mapuche ubicado entre los ríos Biobío y Las Cruces, fue ocupado por el Estado chileno entre 1861 y 1883. Tal acción, originada en el aprovechamiento de esas tierras para su explotación agroforestal y mineral, con el consiguiente desplazamiento forzado del pueblo mapuche, tuvo por materialización física la creación o refundación de ciudades como una estrategia espacial de dominio. En este marco, Angol fue fundada por séptima vez, revelando la importancia histórica de su emplazamiento, en términos militares y políticos, augurando una instalación urbana de desarrollo sostenido. A pesar de ese respaldo estatal inicial, diversas decisiones mermaron su progreso, dejando a la ciudad postergada en su desarrollo hasta mediados del siglo XX. Este trabajo examina las vicisitudes que ampararon la ejecución de las obras públicas relevantes, como expresión de la presencia y poder del Estado y de particulares. Se relevan piezas fundamentales que contribuyen al relato arquitectónico contemporáneo chileno y a la formación de una identidad ciudadana. La metodología utilizada incluye fuentes primarias, como archivos fotográficos, periódicos locales y catastros; y secundarias, como diversas historias regionales. Las conclusiones, por su parte, revelan que la modernidad arquitectónica fue un proceso contenido, marginal y paralelo.
Pelatihan Keterampilan Membuat Kerajinan Tangan dari Sedotan Plastik Pada Ibu-Ibu Majelis Taklim Nurmahmudah Kabupaten Kubu Raya
Authors: Maulina Iin , Elvri Rini , Yuniarti Yuniarti , Zar'in Firdaus
Published: September 2023

Pengabdian ini bertujuan untuk memberikan pengetahuan dan keterampilan dalam mengembangkan kreativitas dengan membuat kerajinan tangan dari sedotan. Target kegiatan pengabdian ini adalah para ibu yang mengikuti Majelis Taklim Nurmahmudah. Kegiatan pengabdian ini menggunakan metode ceramah, demonstrasi, curah pendapat, dan praktik langsung. Pemilihan metode ini dilakukan agar ibu-ibu Majelis Taklim Nurmahmudah mempunyai keterampilan membuat kerajinan tangan dari sedotan dan menjadi penghasilan tambahan. Jumlah peserta sekitar 28 orang. Kegiatan pengabdian ini mengikuti langkah perencanaan, pelaksanaan, dan penilaian. Kegiatan perencanaan meliputi: Membuat kesepakatan antara pengabdi dengan mitra usaha tentang program yang akan dilaksanakan mulai dari perencanaannya sampai dengan akhir kegiatan. Perencanaan meliputi: Penyusunan jadwal, penyusunan materi, menyiapkan sarana dan prasarana pendukung kegiatan, seperti: Sedotan, gunting, lem khusus, bahan pendukung lainnya, ruangan, media pembelajaran, narasumber atau pemateri, dan konsumsi. Setelah itu, pengabdi dibantu oleh mitra usaha memberikan pengarahan kepada ibu-ibu Majelis Taklim Nurmahmudah. Tahap pelaksanaan berlangsung selama sebulan. Kegiatan akhir, yaitu pengabdi melakukan evaluasi dan penyusunan laporan. Secara keseluruhan, kegiatan pengabdian berlangsung dengan baik yang mana ibu-ibu Majelis Taklim Nurmahmudah dapat membuat kerajinan tangan dari sedotan berupa bunga hias dan pot bunganya dan masing-masing menjual hasil karya tersebut.
Promosi Kesehatan Dalam Upaya Pencegahan Covid- 19 Melalui Vaksinasi di Kelurahan X Kabupaten Sintang
Authors: Putra Gandha , Komala Dewi Ria Risti , Ardiansyah Ardiansyah
Published: September 2023

Kasus covid-19 di Indonesia semakin bertambah setiap harinya. Beberapa penelitian telah dilakukan untuk mencegah terjadinya penyebaran Covid-19, salah satunya adalah dengan pengembangan Vaksin. Hal tersebut sejalan dengan kebijakan pemerintah Indonesia untuk menyelenggarakan program vaksinasi covid-19. Namun sayangnya, masih banyak masyarakat yang tidak mau divaksin karena persepsinya terhadap vaksin covid-19 masih kurang baik. Kelurahan X merupakan salah satu kelurahan di Kabupaten Sintang yang 62%  persepsi masyarakat tentang vaksin covid-19 masih kurang baik. Tujuan dan target khusus yang ingin dicapai dari kegiatan ini adalah meningkatkan pengetahuan masyarakat  tentang pentingnya vaksinasi Covid-19 dalam upaya pencegahan covid-19. Kegiatan dilaksanakan pada tanggal 29 April 2021 di Posyandu Anggrek. Metode pelaksanaan promosi kesehatan yang digunakan dalam pengabdian ini adalah dengan ceramah dan diskusi. Hasil menunjukkan p value sebesar 0,000 yang berarti terdapat perbedaan yang bermakna tingkat pengetahuan responden sebelum dan sesudah dilaksanakan penyuluhan.
Pemanfaatan Sampah Dalam Meningkatkan Pendapatan Masyarakat Kelurahan Bansir Darat, Kota Pontianak
Authors: Yasmin Devi , Pradipta Aldo Gala
Published: September 2023

Sampah terbagi menjadi 2, yaitu sampah organik dan non organik. Sampah organik yang berasal dari sisa-sisa makanan sehari-hari seperti sayur-sayuran dan buah-buahan di masyarakat belum dimanfaatkan dengan baik. Serta sampah non organik seperti plastik, botol, atau kaleng minuman. Sampah-sampah ini sebenarnya masih bisa dimanfaatkan yang bisa dimanfaatkan dan  mempunyai nilai jual. Namun masih banyak masyarakat yang membiarkan sampah-sampah tersebut begitu saja, sehingga menimbulkan bau tidak sedap atau mengotori lingkungan sekitar. Pelatihan pengolahan sampah organik dan non organik yang dilakukan ini untuk meningkatkan pengetahuan serta kemampuan masyarakat dalam mengolah dan memanfaatkan sampah menjadi kompos dan kerajinan tangan penghias rumah yang bermanfaat serta mempunyai nilai jual yang tinggi.  Pelatihan dilakukan di Kelurahan Bansir Darat,  Kecamatan Pontianak Barat, Kota Pontianak.
Pelatihan Diversifikasi Olahan Rumput Laut Bagi Masyarakat Pulau Lemukutan, Kabupaten Bengkayang
Authors: Minsas Sukal , Jayuska Afghani , Muliadi Muliadi , Satyahadewi Neva , Rafdinal Rafdinal
Published: September 2023

Pulau Lemukutan merupakan salah satu daerah penghasil rumput laut di Kabupaten Bengkayang dengan Bingke merupakan panganan khas Pontianak yang bercitarasa tinggi dan telah dibuat dalam olahan dasar yang bervariasi. Cara pembuatannya yang mudah Rumput laut merupakan salah satu komoditas daerah Pulau Lemukutan, Kabupaten Bengkayang. Desa Pulau Lemukutan merupakan salah satu daerah penghasil rumput laut di Kalimantan barat. Rumput laut yang dibudidayakan pada umumnya jenis Euchema cottoni. Tujuan kegiatan ini adalah untuk peningkatan keterampilan dan pengetahuan dalam bidang kewirausahaan dalam pengolahan pangan lokal berbasis rumput laut. Kegiatan PKM ini telah dilaksanakan pada bulan Juni 2021 di Balai Desa Pulau Lemukutan Kalimantan Barat. Mitra PKM ini adalah ibu-ibu yang tergabung dalam anggota PKK (Pemberdayaan Kesejahteraan Keluarga) Desa Pulau Lemukutan, Kalimantan Barat. Permasalahan yang dihadapi ibu-ibu PKK belum pernah mendapatkan pelatihan terkait olahan rumput laut. Oleh karena itu dilakukan kegiatan peningkatan keterampilan berupa pelatihan pengolahan rumput laut. Metode yang dilakukan dalam PKM ini adalah ceramah, praktik, tanya jawab, demontrasi, dan diskusi. Manfaat dari kegiatan PKM ini adalah adanya peningkatan pengetahuan dan kesadaran terkait manfaat rumput laut terhadap kesehatan sebagai asupan gizi yang optimal untuk memperkuat daya imun tubuh, kemudian meningkatnya keterampilan peserta PKM dalam membuat bingke, bakso dan nugget dengan pangan lokal berbasis rumput laut sehingga dapat dijadikan olahan pangan yang berdaya jual tinggi. Kegiatan PKM ini telah meningkatkan pengetahuan, kesadaraan dan keterampilan akan pengolahan pangan bebasis rumput laut.
Sosialisasi Pemanfaatan Botol Plastik Bekas Menjadi Kursi, Meja dan Tempat Tidur Sebagai Upaya Mengurangi Limbah Plastik dan Menciptakan Produk Lokal Berdaya Saing Global
Authors: Perangin-Angin Susanti BR , Manik Erba Kalto , Nolia Helfi
Published: September 2023

Sampah plastik merupakan salah satu sampah dengan waktu urai paling lama, dimana akan mengakibatkan pencemaran secara masif jika penggunaan dan pengelolaan limbahnya tidak diatur. Pelaksanaan kegiatan pengabdian kepada masyarakat kali ini berlandaskan kuantitas dari sampah botol plastik yang sangat tinggi sedangkan dilain sisi dapat dikembangkan dan diolah menjadi sebuah produk selayaknya kursi, meja, dan tempat tidur. Kegiatan kali ini diawali dengan metode persiapan dan pelaksanaan dimana terdapat kegiatan persiapan dan pembekalan oleh mahasiswa, alumni, dan dosen pembimbing lapangan. Persiapan dan pembekalan ini mencakup teori dan praktek desa yang akan menjadi mitra pendampingan mahasiswa dan alumni serta masyarakat peserta Pengabdian Masyarakat yakni Desa Ajinembah Kecamatan Merek Kabupaten Karo. Hasil dari kegiatan pengabdian kepada masyarakat berupa sosialisasi kali ini menghasilkan kesadaran masyarakat dalam membuang sampah terkhusus sampah botol plastik dan dalam mengolah sampah tersebut, selain itu kegiatan kali ini juga meningkatan kecintaan masyarakat terhadap produk lokal dan kedepannya dapat menciptakan produk yang dapat bersaing dengan produk asing. Dan dengan semua kemajuan diharapakan juga dapat membuka peluang usaha baru dalam pembuatan kursi, meja, dan tempat tidur.
Peningkatan kemampuan Public Speaking melalui Pelatihan Muballighot Pimpinan Daerah Aisyiyah Kabupaten Kubu Raya
Authors: Elvri Rini , Maulina Iin , Ronas Mahin Ridlo
Published: September 2023

Majlis Tabligh adalah jantung kehidupan organisasi Aisyiyah, karena di majelis Tabligh inilah pergerakan dakwah Islam menjadi pusatnya. Para Mubalighat Aisyiyah, memiliki peranan penting untuk menyampaikan dakwah Islam bil lisan, sehingga dalam melaksanakan program kerjanya memerlukan metode untuk menyampaikan pesan dakwah islam supaya dapat diterima oleh masyarkat luas. Oleh Karena itu, maka mubalighat Aisyiyah perlu mengembangkan diri dengan menambah ketrampilan berbicara di depan umum. PD Aisyiyah Kabupaten Kuburaya sangat antusias untuk mengadakan pelatihan ini, karena mereka memiliki semangat yang tinggi untuk berdakwah dan audiensnya juga sudah banyak tersebar di seluruh cabang di daerah Kabupaten Kuburaya, meskipun medan yang sangat jauh dari jangkauan mereka.Namun permasalahan yang mereka hadapi, belum ada mubalighat yang mampu berbicara dengan baik dan terampil di depan umum. Untuk itu , pengusul berinisiatif untuk membuat pengabdian dengan pelatihan Public Speaking untuk menambah ketrampilan berbicara di depan umum bagi para mubalighat Aisyiyah dengan jumlah peserta 20 orang utusan dari pengurus cabang dan ranting. Kegiatan pengabdian ini,mengikuti langkah pendekatan, persiapan, pelaksanaan, pelatihan. Langkah pendekatan meliputi bersilaturrahim ke Pengurus PD Aisyiyah KKR, langkah persiapan meliputi sosialisasi ke Pengurus cabang dan ranting, langkah pelaksanaan, menyiapkan bahan materi dari sumber Muhammadiyah dan Aisyiyah, menyiapkan materi secara runtut dan menmberikan materi ke para Mubalighat. Langkah pelatihan meliputi penyampaian materi dari pengusul dan praktik langsung.
TEKNIK BUDIDAYA IKAN ARWANA SUPER RED Scleropages formosus UNTUK MENGHASILKAN BENIH SIAP TEBAR
Authors: Iskandar A , Revan M , Carman O , Widianti D , Indriastuti C E
Published: September 2023

Arwana super red Scleropages formosus merupakan jenis ikan hias yang termasuk kategori low-volume high-value. Saat ini pemenuhan permintaan ikan arwana masih banyak didominasi oleh ikan hasil tangkapan yang jika berlangsung secara terus menerus, ikan ini akan punah dari ekosistem di habitatnya. Salah satu upaya guna mengatasi hal tersebut adalah diseminasi informasi teknik budidaya ikan arwana agar keberadaan ikan ini tetap lestari serta dapat merangsang pengembangan perekonomian masyarakat pembudidaya dengan mengelola dan memanfaatkan sumber daya yang tersedia secara optimal. Dalam studi ini alur kegiatan budidaya dibagi kedalam 5 tahapan yang dimulai dari pemeliharaan induk, pemijahan induk, pemanenan larva, pemeliharaan larva dan pemeliharaan benih. Ikan arwana super red dipelihara dengan padat tebar 1 ekor/m2 dan dipijahkan secara alami dengan perbandingan induk jantan dan betina 2:3. Selama proses studi, fekunditas rata-rata perekor induk betina sebanyak 25-35 butir telur, fecundity rate 95% dan persentase hatching rate telur rata-rata sebesar 75%. Larva hasil budidaya dipelihara selama 3 bulan sampai mencapai ukuran 25 cm dengan rata-rata persentase tingkat kelangsungan hidup benih mencapai 90%. Sebelum dijual kepada konsumen, ikan dipasangi microchip dan dilengkapi dengan sertifikat sebagai penanda bahwa ikan tersebut berasal dari penangkaran resmi yang memiliki CITES bukan dari tangkapan alam liar.
SUPLEMENTASI EKSTRAK DAUN KELOR (Moringa oleifera) DAN VITAMIN E DALAM PAKAN UNTUK MENINGKATKAN KINERJA PRODUKSI DAN DAYA TAHAN TUBUH BENIH IKAN PATIN (Pangasius sp.)
Authors: Fadhillah Radhi , Zulfadhli Zulfadhli , Lestari Tuti Puji , Burhanis Burhanis , Alauddin Alauddin
Published: September 2023

Keberhasilan kegiatan produksi budidaya ikan patin sangat erat kaitannya dengan peningkatan pertumbuhan ikan patin dalam proses pemeliharaan. Pemberian suplemen yang tepat pada pakan diharapkan dapat meningkatkan pertumbuhan ikan. Tujuan penelitian ini adalah meningkatkan kinerja produksi dan daya tahan tubuh benih ikan patin (Pangasius sp.) melalui suplementasi ektrak daun kelor dan vitamin E dalam pakan. Rancangan penelitian ini menggunakan Rancangan Acak Lengkap (RAL). Perlakukan penelitian yang diteliti terdiri dari 4 Perlakukan dan 4 Ulangan, yaitu: A). Kontrol: Pakan Komersil; B). Pakan Komersil+ EDK 100mL/kg pakan + Vit. E 200 mg/kg pakan; C). Pakan Komersil + EDK 150 ml/kg pakan + Vit. E 200 mg/kg pakan; D). Pakan Komersil + EDK 200 ml/kg pakan + Vit. E 200 mg/kg pakan. Hasil Analisis sidik ragam (ANOVA) menunjukkan bahwa suplementasi ekstrak daun kelor dan vitamin E kedalam pakan dapat meningkatkan kinerja produksi benih ikan patin seperti penambahan bobot mutlak, Efisiensi pakan, Food convertion ratio dan laju pertumbuhan spesifik benih ikan patin (P0,05). Hasil uji Duncan menunjukkan bahwa suplementasi EDK dan Vit.E dalam pakan menghasilkan perbedaan yang nyata, hal ini ditunjukkan perlakuan yang terbaik diperoleh pada perlakuan C yaitu penambahan EDK 100ml/kg pakan+ Vit. E 200mg/kg pakan.
ARTIKEL REVIEW: TEKNIK PEMBENIHAN UDANG GALAH (Macrobrachium rosenbergii) DENGAN METODE PEMIJAHAN ALAMI
Authors: Ramadhani Ayu Winna , Islamy R. Adharyan , Hakim Faisal
Published: September 2023

Udang galah (Macrobrachium rosenbergii) merupakan komoditas perikanan yang potensial untuk dibudidayakan karena pertumbuhannya cepat, berukuran besar, serta tingkat prevelansi penyakit yang rendah. Faktor utama yang perlu diperhatikan dalam pembenihan Udang Galah adalah pemilihan induk, pemeliharaan calon induk, metode pemijahan, manajemen pakan, pengendalian hama dan penyakit, serta manajemen kualitas air. Dengan demikian, kegiatan ini membutuhkan perhatian khusus untuk mencapai keberhasilan budidaya Udang Galah. Pelaksaan observasi partisipatif dilaksanakan selama satu bulan di Instalasi Budidaya Air Payau (IBAP) Kabupaten Probolinggo. Kegiatan ini bertujuan mengetahui kondisi optimal yang diperuntukkan pembenihan Udang Galah. Pembenihan Udang Galah di Instalasi Budidaya Air Payau (IBAP) Kabupaten Probolinggo menghasilkan benur Udang Galah sebanyak 11.000 ekor. Kualitas air dari bak pemeliharan benih yang meliputi suhu, salinitas dan DO diantaranya ialah 27℃ - 29℃; 6 – 11 ppt; pH 8,2 – 8,5 dan 7,5 – 8,2 mg/L.
EFEKTIVITAS EKSTRAK BIJI PEPAYA (Carica papaya) TERHADAP KESEMBUHAN DAN KELANGSUNGAN HIDUP IKAN JELAWAT (Leptobarbus hoevenii) YANG DIINFEKSI BAKTERI Aeromonas hydrophila
Authors: Rahayu Endang , Dewantoro Eko , Farida Farida , Hadiarti Dini
Published: September 2023

Jelawat fish (Leptobarbus hoevenii) are found in several rivers in Kalimantan and Sumatra. Often encountered obstacles in fish farming is the bacterial disease Aeromonas hydrophila, known as Motile Aeromonas Septicemia (MAS). Treatment of disease can use natural ingredients that function as antimicrobials. Papaya seeds contain antimicrobials; besides that, they also contain secondary metabolites such as phenols, terpenoids, alkaloids, and saponins. The terpenoid group is the main component of papaya seeds and has antibacterial activity. This study aims to determine the effectiveness of the best papaya seed extract on the survival of jelawat fish infected with Aeromonas hydrophila bacteria. The treatment in this study used a completely randomized design (CRD) with 4 treatments and 3 replications. The treatments were treatment A (soaking with papaya seed extract at 0 ppm), treatment B (soaking with papaya seed extract at 40 ppm), treatment C (soaking with papaya seed extract at 80 ppm), and treatment D (soaking with papaya seed extract at 120 ppm). The results showed that the administration of papaya seed extract by immersion had a significant effect on the response to high feeding, with an average absolute weight growth value of 1.33 grams, a 100% survival rate, and wound healing in sharks infected with A. hydrophila bacteria starting to normalize or heal. Meanwhile, the water quality observed during the study was quite supportive for the survival of the jelawat, with temperatures ranging from 27–28, dissolved oxygen (DO) ranging from 7-8.7 mg/L, pH ranging from 6.5 to 7.3, and ammonia values from 0.1–0.3 mg/L. Giving 80 ppm through soaking papaya seed extract with jelawat fish is the best.
Implementasi Maximum Power Point Tracking (MPPT) Metode Overall Distribution (OD) – Particle Swarm Optimization (PSO) Algorithm dengan Interleaved Boost Converter
Authors: Santoso Bima Bagus
Published: September 2023

Abstrak Kinerja sistem photovoltaic yang fluktuatif sangat tergantung pada radiasi matahari dan kondisi suhu. Karena alasan ini maka diperlukannya pengoptimasian pada sistem photovoltaic. Saat ini terdapat banyak sekali optimasi photovoltaic menggunakan Maximum Power Point Tracking. Dari sekian banyak metode yang digunakan dalam pengoptimasian, terdapat 2 metode pada umumnya sering digunakan, yaitu metode Artificial Intelegence dan konvensional. Untuk mengatasi permasalahan pada MPPT konvensional yaitu kelemahan dalam pelacakan daya titik maksimum dibawah kondisi partial shading. Artikel ini mengusulkan algoritma Overall Distribution (OD) - Particle Swarm Optimization (PSO) dengan tujuan meningkatkan kecepatan dan keakuratan pelacakan saat kondisi partial shading. Sistem photovoltaic dalam artikel ini menggunakan tiga modul photovoltaic 100 Wp yang dikonfigurasi secara seri dengan DC-DC interleaved boost converter. Kinerja algoritma yang diusulkan di simulasikan menggunakan software MATLAB dan dibandingkan dengan metode HC dan P&O. MPPT yang diusulkan diuji dengan memvariasikan penyinaran matahari pada ketiga modul. Hasilnya menunjukkan bahwa MPPT mampu melacak GMPP di bawah kondisi partial shading yang akurat. Kecepatan pelacakan rata-rata dari algoritma yang diusulkan yaitu 0.195 s dan akurasi 100%.
ANALISA FAKTOR GESEKAN ALAT PENUKAR KALOR PIPA KONSENTRIK SALURAN SILINDER SKALA LABORATORIUM
Authors: Lelanang Andre , Zulyan Muhammad , Julianto Eko , Sarwono Eko , Fuazen Fuazen
Published: September 2023

Alat penukar kalor adalah suatu alat untuk memindahkan kalor antara dua jenis fluida. Pada Pengujian ini, menggunakan pipa aluminium dengan diameter luar pipa dalam 25mm, diameter dalam pipa dalam 19mm, diameter luar annulus 50mm, diameter dalam annulus 44mm, panjang pipa dalam 1.500mm, panjang annulus 1.000mm. Kontruksi penukar kalor pipa konsentrik satu laluan (one pass concentric tube heat exchanger), dengan arah aliran berlawanan arah (counterflow), air panas dengan arah aliran horizontal di pipa dalam, air dingin aliran horizontal di annulus berlawanan arah dengan arah aliran air panas. Pengujan menggunakan tiga variasi debit yaitu 5 LPM, 8,33 LPM dan 11,67 LPM meliputi dua seksi. Pada seksi pertama dengan gravitasi pada annulus terlihat bahwa semakin meningkatnya debit aliran, semakin meningkat faktor gesekan, bilangan Reynolds dan efektivitas penukar kalor. Pada seksi kedua dengan pompa dingin pada annulus terlihat bahwa semakin meningkatnya debit aliran, semakin meningkat faktor gesekan dan efektivitas penukar kalor. Tetapi, pada bilangan Reynolds nilainya fluktuatif. Pada debit 5 LPM berada pada nilai 13.108,38 namun pada debit 8,33 LPM terjadi penurunan pada nilai 9.806,683 kemudian pada debit 11,67 LPM kembali meningkat pada nilai 13.926,28.Kata kunci: Debit, Faktor Gesekan, Reynolds, Efektivitas Penukar Kalor
RANCANG BANGUN SMART BIOGAS PLANT MENGGUNAKAN TEKNOLOGI INTERNET OF THINGS (IOT)
Authors: Prasetya Hendrik Elvian Gayuh , Amalia Rif'ah , Azisa Achmad Fawaidz Bintang , Fitri Aulia Lailatul , Jibran Muhammad Rizal
Published: September 2023

Biogas adalah gas yang dihasilkan dari proses fermentasi bahan organik dalam kondisi tertutup (anaerob) oleh mikroorganisme. Dalam penelitian ini, produksi biogas menggunakan bahan baku dari kotoran sapi. Kotoran sapi merupakan sumber yang baik karena mengandung bakteri penghasil metana. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh penambahan EM4 terhadap kualitas biogas yang dihasilkan. Penelitian ini dilakukan di Laboratorium PLC, Program Studi Sistem Pembangkit Energi, Politeknik Elektronika Negeri Surabaya. Metode yang digunakan dalam penelitian ini adalah dengan membandingkan dan memvariasikan rasio bahan yang digunakan untuk menghasilkan biogas. 1 adalah 50 kg kotoran sapi : 50 liter air: 3 Liter EM4, varian 2 adalah 50 kg kotoran sapi : 50 liter air : 1.5 Liter EM4 dengan varian 3 adalah 25 kg kotoran sapi : 25 liter air : 3 Liter EM4. Biogas diproduksi di dalam fermentor berkapasitas 200 liter dengan pengadukan tiga kali sehari menggunakan sistem batch dan masa penelitian selama 25 hari untuk setiap varian. Pengambilan data berupa kandungan CH4, CO2, H2S, suhu dan tekanan dijalankan setiap hari. Hasil penelitian ini menunjukkan bahwa varian 1 mampu menghasilkan biogas dengan kandungan gas CH4 sebesar 53,6% dan menghasilkan warna nyala kuning-biru dengan durasi nyala 56 detik pada uji pembakaran.