bluuebunny/crossref_metadata_2025 huggingface dataset:
EFEKTIVITAS PENGARUH EKSTRAK BIJI KOPI SEBAGAI INHIBITOR TERHADAP LAJU KOROSI PADA BAJA ST-37 DALAM MEDIA KOROSIF HCl 0,5 N
Authors: Nadrakhilla Yayang , Ishak Ishak , Hakim Lukman , Meriatna Meriatna , Ulfa Raudhatul
Published: December 2024

Proses penghancuran permukaan logam melalui proses elektrokimia disebut korosi. Korosi dapat diminimalkan melalui pelapisan, prosedur inhibitor, dan proteksi katodik. Namun pendekatan yang paling sederhana dan paling murah adalah dengan memasukkan inhibitor ke dalam media. Penelitian ini menggunakan metode perendaman untuk mengetahui pengaruh inhibitor alami turunan ekstrak biji kopi Robusta terhadap laju korosi baja ST-37. 0,5 N HCl adalah media korosif yang digunakan dalam penyelidikan ini. Perendaman dilakukan selama enam, sembilan, dua belas, dan lima belas hari dengan konsentrasi  inhibitor 0,13, 0,17, 0,22, dan 0,34 gram/ml. Berat benda yang hilang per satuan luas permukaan selama waktu perendaman disebut laju korosi. Hasil penelitian menunjukkan bahwa dalam lingkungan asam klorida, konsentrasi inhibitor dan waktu perendaman yang lebih lama menurunkan laju korosi pada baja karbon rendah. Penurunan ini disebabkan oleh pembentukan lapisan pasif yang melindungi permukaan besi. Lapisan ini melindungi besi dari korosi. Perendaman selama 15 hari dengan konsentrasi 0,34 gr/ml menunjukkan laju korosi terendah dan efisiensi inhibisi tertinggi, masing-masing 5,7193 Mpy dan 79,85%.
UNITY TO RUPTURE: FRAGMENTATION OF FRATERNITY AND HISTORY IN SHIV K. KUMAR’S A RIVER WITH THREE BANKS
Authors: Sooraj Kumar  , Seema Rajan S.
Published: December 2024

A River with Three Banks (1998) by Shiv K. Kumar explores the intricacies of human identity and morality amidst the chaotic and tumultuous backdrop of India’s Partition. Its central characters each reflect fractured psyches and diverse ideological stances. The novel weaves a narrative that interrogates the historical, social, and personal cataclysms of the dreadful partition of 1947. Kumar employs the metaphor of the river, a recurring symbol of continuity, division and renewal, to represent the multifaceted impact of partition on individual and collective consciousness. This article examines the novel’s thematic concerns, including the conciliation of identity and individuality in divided societies, the role of memory in shaping postcolonial narratives and the ethical dimensions of coexistence in a world marked by historical ruptures to understand the enduring legacy of one of the most significant and indelible events in Indian history.
A ROLE OF QUALITY FACTORS AND MARKETING MIX TOWARDS THE STUDENT’S SATISFACTION IN HIGHER EDUCATION INSTITUTIONS (HEIS): A SYSTEMATIC LITERATURE REVIEW
Authors: Dubey Shilpi
Published: December 2024

The aim of this research article to explore the previous studies on the quality factors and marketing mix to increase the enrolment and satisfaction of the students in the field of higher education institutions. An exploratory research design was used to explore the new facts, new knowledge, new information related to the quality factors and marketing mix in the higher education institutions. A systematic literature review was carried out to find the research gaps from the various research articles published in reputed national and international journals from the Peer Reviewed, Google Scholar, UGC Care Scopus, Wave of Science. Science Citation Index (SCI), Emerging Sources Citation Index (ESCI)) and Science Citation Index Expanded (SCIE) etc. during 2012 to 2024. This study concluded that there was little work and research available regarding the quality factors and marketing mix in the higher education institutions using statistical descriptive and structural equation modelling approach. The limitation of this study was the duration from year 2012 to year 2024 to explore the research articles from the authentic database sources. The future researchers can use the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) model to get the more precise results.
ANALYSIS OF THREE PROTAGONISTS CONTRIBUTING TO THE TRIVENI OF VIJAYDAN DETHA
Authors: Trivedi Pragati
Published: December 2024

This paper analyses the concept of Triveni, a term signifying the confluence of three significant elements, within the works of Vijay Dan Detha, a prominent figure in Rajasthan literature. By focusing on three distinct protagonists from his oeuvre, the study examines how each character contributes uniquely to the thematic and narrative fabric of Detha's stories. The protagonists selected represent diverse facets of human experience and cultural reflection, serving as lenses through which Detha's literary vision is crystallized. This paper uses a comparative analysis to reveal how these characters collectively embody the Triveni, merging individual struggles, cultural contexts, and philosophical insights. The research highlights Detha's innovative narrative techniques and ability to weave complex, multi-dimensional characters that enrich the reader's understanding of societal and existential themes. This paper not only enhances appreciation of Detha’s literary artistry but also contributes to broader discussions on using Triveni in narrative structures across different literary traditions.
A STUDY OF MACRO FACTORS INFLUENCING HAPPINESS INDEX OF EASTERN EUROPEAN COUNTRIES
Authors: Dave Maulik , Dave Tejas , Parwani Ashwin , Rami Ashish
Published: December 2024

Happiness has been of importance for individuals, organisations and even for the nations primarily due to its influence on productivity and prosperity of the respective entities. There are plethora of micro and macro factors affecting happiness. This research study aims to   investigate the  association of macro factors viz. gross domestic product and per capita gross domestic product with happiness level and the extent to which they exercise their influence on happiness.Gross domestic product,  per capita gross domestic product and happiness index of east European countries have been examined. Various statistical techniques including multiple regression equation have been used to analyze the data, The study revealed that per capita gross domestic product is an important variable influencing happiness index of a nation signaling that any government trying to achieve higher happiness index will have to pay adequate attention to per capita gross domestic product.
THE ROLE OF MACRO ECONOMIC FACTORS IN SHAPING HAPPINESS IN WESTERN EUROPE
Authors: Dave Maulik , Dave Tejas , Parwani Ashwin , Rami Ashish
Published: December 2024

The present study examines the correlation between macroeconomic variables, specifically Gross Domestic Product (GDP) and Per Capita GDP, and their impact on happiness levels as measured by the Western European Happiness Index. The study uses statistical methods like ANOVA, multiple regression, and variance inflation factor (VIF) analysis to examine data from Western European countries. The results indicate a statistically significant negative association between GDP and the Happiness Index, but there is a positive but statistically insignificant positive association between per capita GDP and Happiness index. According to the study, GDP has a major impact on happiness levels, while per capita GDP has a little impact. By concentrating on macroeconomic determinants in a continental context, this study bridges research gap to an extent and provides guidance for policymakers looking to improve national happiness.
PRE AND POST LEVEL OF FINANCIAL LITERACY OF SHG MEMBERS, IMPACT OF FINANCIAL LITERACY ON ECONOMIC EMPOWERMENT AND FACTORS DRIVING ECONOMIC EMPOWERMENT – A STUDY WITH REFERENCE TO CHIKKABALLAPURA DISTRICT, KARNATAKA
Authors: Prathap T. A. , Basha K. Apsar
Published: December 2024

Purpose: The main intention of the present study is to know whether the demographic profiles impact on the study of financial literacy and women economic empowerment. Further, the study is also conducted to know the level of financial literacy of women SHG members before and after joining self help groups (SHGs), and to study the impact of financial literacy on economic women empowerment. Also further, the study conducted to know the factors impacting economic women empowerment, women studies reveal that unless and until women are developed their empowerment programs have no real meaning. Women empowerment has been noticed as a pre-requisite condition to reduce the level of poverty in developing nations (Aysha et al., 2018).
Methodology / Design: A well defined previously known questionnaire which was managed as schedule after knowing the constraints in collecting back questionnaires with their incompleteness and avoid. A total of 108 questionnaire where in the hard and out of this only 100 were usable one balance of questionnaires were rejected. Chi-square, contingency co-efficient, Kendall's co-efficient of concordance, weighted average and Impact of Financial Literacy Index (IFLI) quantitative techniques were performed. The participants of the study include SHG members of 6 blocks selected villages.
Findings: The present research work reveals that all the demographics are supporting the study and there exist significant variation in the data. The financial literacy has improved after joining SHGs. Factors of financial literacy impacting on ecommerce women empowerment includes in the order, women gains financial knowledge, road to economic empowerment and reduction in financial anxiety and stress. Further, the study also found about the factors driving women economic empowerment which includes in the order economic independence, savings formation and reduction in dependency on money lenders.
CRITICALLY ANALYSING THE IMPACT OF AI BASED MARKETING ON THE RETAIL SECTOR IN INDIA
Authors: Ghosh Uttam Kumar
Published: December 2024

The introduction of “Artificial Intelligence” or “AI” has revolutionised the India retail market. Its integration in the marketing strategies has created a profound impact making it an essential topic of study. Several technologies of AI are involved in this process. It includes, “machine learning”, “predictive analysis” and “language processing” technology, which has helped the retailers optimise and automate their processes. It has also resulted in better decision making, and thereby improved the customer interactions. The current study aims to analyse the “effects of AI” in the Indian retail markets. This study, additionally tries to highlight the various opportunities created and the associated challenges that arise. The current study also focuses on the current mechanisms of adaptation to “AI based technology”. It would therefore help in a better understanding of both the benefits and challenges of “AI integration”. For this study, a “mixed methods” approach has been taken. Therefore, both “qualitative” and “quantitative” methods have been considered.
 
The findings provide a comprehensive view of the “AI integration” in marketing. AI has helped the retailers to effectively increase “customer interaction” with the help of “predictive analytics” and has helped automate the marketing campaigns. Additionally, this study has identified several barriers to the adoption of AI. The associated “high costs”, and the concern for “data security” have been identified as top concerns of the retailers in the Indian market. Additionally, the study has revealed that the effects of AI on the “small and medium enterprises” (SMEs) of India is significant. It has led to them having long term “socio-economic” effects on their businesses. However, AI as a tool in the Indian retail sector has significant potential. Overcoming certain barriers would help the market reach its optimal potential. In this paper, additionally, the research gaps are also highlighted.
SOLITON EXCITATIONS IN AN (3+1) DIMENSIONAL Alpha-HELIX PROTEIN SYSTEM WITH QUADRAPOLE-QUADRAPOLE INTERACTIONS
Authors: Vijitha R. Jeba , Beauno S.
Published: December 2024

This paper aims to explore that the soliton solutions for the three-dimensional (3D) model Hamiltonian equation, specifically as it pertains to protein molecules. The considered equation has been thoroughly analyzed that, with every step of the calculations discussed in detail and the main results are clearly explained. Notably, eight distinct types of the soliton structures are identified and the surfaces corresponding to each solitons solution are graphically illustrated as described. The explicit forms of the eight soliton solutions are presented. Additionally, mathematical derivations and numerical graphs are provided to support and visualize the soliton solutions of the energy equation.
A Dialectical and Historical Evaluation on Turkish Place Names in Shumen, Bulgaria
Authors: Selami BAŞOĞLU Ali , YILMAZ Hasan Hüseyin
Published: December 2024

Tarihi Traklara hatta daha eskilere kadar götürülen Bulgaristan Şumnu (Şumen), çeşitli Oğuz boylarının, Tatarlar’ın, Kıpçaklar’ın, Peçenekler’in yurdu olmuştur. Bu yurt edinme sürecinde insanlar; yeni çevrelere kendilerinden, sevilen
şahsiyetlerden, boylarından, meslek isimlerinden ve yerlerin özelliklerinden isimlendirmelerde bulunmuşlardır. Bu yer adları da bir yerde tarihe kaynaklık etmektedir. Osmanlının nüfus ve vergi kayıtlarını ihtiva eden tapu tahrir
defterleri yerleşim yerlerinin isimleri, nüfus, hayvan, meslek, inanış, etnik köken hakkında bize önemli bilgiler sunarken bir takım değerlendirmeler yapma imkanı da vermektedir. Bu çalışmada günümüz Şumnu İli (Oblastı) idari sınırları
dahilinde yalnızca Türklerin yaşadığı veya çoğunluğunu Türklerin oluşturduğu yirmi yerleşme adı üzerinde bir araştırma yapılmıştır. Araştırmada, esas veri kaynaklarını, Osmanlı Arşivlerde bulunan 1479, 1483, 1512, 1516, 1538, 1557,
1579, 1586, 1591, 1601, 1642 tarihli ve sırasıyla 4529, 129, 167, 370, 217- 8, 382, 58- 42- 559, 625, 1774, 1558 - 25939 ve 771 numaralı tapu - tahrir defterlerine dayalı hazırlanan çalışmalar ile sahadaki Şumnu İli ağız çalışmasının
verileri oluşturmaktadır. Şumnu yer adlandırmalarında yerin özellikleri, jeomorfolojik yapı, lakap, aile ismi, mesleki isimler, oymak, cemaat, boy isimleri etkili olmuştur.
Vocabulary in Suat Derviş’s Novel Fosforlu Cevriye
Authors: ŞİMŞEK Şahin
Published: December 2024

Zengin bir söz varlığı, insanlara düşüncelerini, duygularını ve hayallerini daha etkili ve anlaşılır bir şekilde ifade etme imkânı sunar. Bu çalışmanın amacı Suat Derviş’in Fosforlu Cevriye adlı romanındaki söz varlığı unsurlarını
tespit etmektir. Çalışmada nitel araştırma yöntemi benimsenmiş, araştırmanın verileri doküman analizi tekniği ile elde edilmiştir. Elde edilen veriler içerik analizi kullanılarak tasnif edilmiş ve yorumlanmıştır. İnceleme objesi
olan romanda bugün ya kullanımdan düşmüş, unutulmuş yahut da yerine eş anlamlıları tercih edilen eski bir zamanın kelimelerinin sıkça karşımıza çıktığı görülmüş bu kelimeler kayıt altına alınmıştır. Romanda en fazla karşımıza çıkan
eskimiş kelimeler olup sonra sırasıyla atasözü ve deyimler, ikilemeler, argo sözcükler, terimler, kalıp sözler (ilişki sözleri) gelmektedir. Romanın zengin söz varlığı, dönemin dil özelliklerini ve kültürel değerlerini yansıtması
açısından önemlidir. Tespit edilen söz varlığı, günümüzde kullanımdan kalkmış kelimelerin ve deyimlerin, argo sözcüklerin, ilişki sözlerinin yeniden canlandırılması ve dilin zenginleştirilmesi amacıyla kullanılabilir.
Mythological Force And Environmental Struggle in Children’s Literature: An Analysis Of The ‘Yeryuzu Takımı” Series
Authors: BULUT Funda
Published: December 2024

Toplumların manevi dünyasını şekillendiren mitler, değerleri geleceğe taşıyarak bireyin geçmişiyle bağ kurmalarına olanak tanır. Türk mitolojisine çevresel bir bakışla yaklaşıldığında mitik anlatıların doğaya saygı, sürdürülebilirlik
ve ekolojik denge gibi kavramları pedagojik bir bağlamda aktarabilecek bir etik ve kültürel çerçeve sunduğu görülmektedir. Çocuk edebiyatında mitolojik unsurların çevre bilinci oluşturmadaki rolünün incelendiği çalışmada nitel
araştırma yöntemlerinden tarama modeli kullanılmış, veri toplama aracı olarak doküman incelemesi yöntemi tercih edilmiştir. İçerik analiziyle elde edilen verilere göre Türk mitolojisindeki iyi figürlerin (Umay, Ak Ana, Ötüken…vb.)
çevreyi koruma ve farkındalık yaratma işlevi üstlenirken kötücül figürlerin (Erlik, Kara Umay, Şıngay Han vb.), insanın doğaya verdiği zararlar simgesel olarak yeniden yorumlanmıştır. Çalışmada Esra Demirbilek’in Yeryüzü Takımı
serisinin özellikle “Türk mitolojisinden yararlanarak çocuklara ekolojik sorumluluk kazandırma, sürdürülebilirlik kavramlarını aşılama, çevresel değerleri öğretme, kültürel mirası aktarma”yı amaçladığına dair bulgular elde edilmiştir.
Bu çalışma, çocuk edebiyatının çevre eğitimi bağlamında sunduğu pedagojik potansiyeli vurgulayarak çocukların doğaya karşı sorumluluk bilinci geliştirmelerine katkı sağlayacak nitelikteki eserlerin yaygınlaşmasının, çevreye duyarlı
bireylerin yetişmesi açısından kritik bir öneme sahip olduğunu ortaya koymaktadır.
Pengaruh Motivasi Kerja, Beban Kerja, dan Audit MSDM terhadap Kinerja Karyawan pada Perawat Rumah Sakit Harapan Magelang
Authors: Nurmala Ahya , Hartono Budi , Novitaningtyas Ivo
Published: December 2024

Employee performance is one of the key factor in determining the success of an organization or company. Employee performance is influenced by several aspects, including work motivation, workload, and human resource management (HRM) audits. This study aims to determine the influence of work motivation, workload, and HRM audits on the performance of nurses at Harapan Hospital Magelang. This study employs a quantitative method with a causal associative approach. Data analysis conducted using descriptive statistical analysis, validity and reliability tests, classical assumption tests, multiple linear regression analysis with a significance level of 0.05, hypothesis testing, and model feasibility testing using SPSS version 26. The results of this study demonstrate that the variable of work motivation has a positive and significant effect on nurse performance, with a 𝑡𝑐𝑜𝑢𝑛𝑡 value of 5.144, which is greater than the 𝑡𝑡𝑎𝑏𝑙𝑒 value of 1.983 and a significance value of 0.000, which is less than 0.05. Additionally, the study proves that the workload variable also has a positive and significant effect on nurse performance, with 𝑡𝑐𝑜𝑢𝑛𝑡 of 5.438 greater than thecritical 𝑡𝑡𝑎𝑏𝑙𝑒 value of 1.983 and a significance value of 0.000, which is less than 0.05. However, in this study, the HRM audit variable does not have influence on nurse performance, with the 𝑡𝑐𝑜𝑢𝑛𝑡 value-1.968, which is greater than the 𝑡𝑡𝑎𝑏𝑙𝑒 value -1.983 and a significance value of 0.052, which is greater than 0.05.
The Effect of Digital Technology Adoption On Industry 4.0 Readiness and Business Performance of Culinary MSMEs in Bogor Regency
Authors: Alifudin Meygy , Mulyati Heti , Mahfudz Naufal
Published: December 2024

MSMEs significantly contribute to employment and economic growth, particularly in Indonesia, and impact the socioeconomic conditions of the lower middle-class community. The Fourth Industrial Revolution has transformed the fundamental managerial aspects of the industry. The aim of this era was to revolutionise industries through digitalisation. Digital technology can help MSMEs adapt swiftly and accelerate through digital transformation. This study investigates the influence of digital technology on the preparedness of MSMEs in Bogor Regency, West Java Province, for Industry 4.0, and on enhancing business performance using the Technology Acceptance Model (TAM). This study employs a quantitative approach with structural equation modelling (SEM) analysis tools for 116 business actors. Readiness indicators are measured using organizational resilience, infrastructure systems, manufacturing systems, data transformation, and digital technology. The findings of this study indicate that the adoption of digital technology by business actors has a minimal and insignificant impact on business performance in MSMEs, but does influence the preparedness of MSMEs to face Industry 4.0. Readiness indicators indirectly affect the use of digital technology and business performance.
The Pengaruh Perceived Organizational Support, Need for Achievement dan Transformational Leadership terhadap Employee Performance: Merit System sebagai Moderator
Authors: Izati Nurul , Azhar  , Prabujaya Sena Putra
Published: December 2024

Employee performance is multidimensional, comprising in-role performance and extra-role performance combined to measure it holistically. This study aims to examine the influence of Perceived Organizational Support (POS), Need for Achievement, and Transformational Leadership on Employee Performance with Merit System as a moderating variable in the North Musi Rawas District Government. Based on the Slovin formula (10 percent margin of error), the minimum sample size is 96 Civil Servants selected using non-probability sampling technique (convenience sampling). Data analysis is conducted using Structural Equation Modeling (SEM) Partial Least Square (PLS) with the assistance of SmartPLS version 4 for Windows software. The study findings indicate a positive and significant influence of Perceived Organizational Support (POS) and Need for Achievement on Employee Performance. However, the influence of Transformational Leadership on Employee Performance shows a negative albeit insignificant result. Additionally, no significant influence is found from the Merit System as a moderating variable on the relationship between POS, Need for Achievement, Transformational Leadership, and Employee Performance. These emphasize the importance of strengthening organizational support, developing appropriate training programs, implementing a better merit system, and aligning leadership styles with organizational conditions to enhance public sector employee performance.
Perbandingan Ukuran dan Komposisi Tubuh antara Mahasiswa Laki-Laki Atlet dan Non Atlet Universitas Padjadjaran
Authors: Mukti Andhika , Nasihin Shelvie Raffiza , Hanan Hanifa , Rohmatullayaly Eneng Nunuz
Published: December 2024

Body composition is the relative proportion of fat and fat-free tissue in the body and indicates health profile. Athletes usually have a different body composition compared to the general population due to their involvement in intense sports activities. This research investigated the body size and composition among male student-athletes and non-athletes at Universitas Padjadjaran. The study used a cross-sectional method and anthropometric measurements on 14 athletes and 34 non-athletes. Anthropometric data consisted of height, weight, body fat, visceral fat, skeletal muscle, and Body Mass Index (BMI). Student-athletes have a lower average weight, body fat, and BMI than non-athletes. They tend to have body fat and visceral fat in the normal category (50% and 100%), whereas non-athletes (5.9% and 79.4%). Additionally, student-athletes have more skeletal muscle (63.4%) than non-athletes (47.1%). Furthermore, nutritional status based on BMI values indicates that student-athletes tend to fall within the normal category at 78.8%, while non-athletes are only at 44%. These results demonstrate that the body size and composition of student-athletes reflect better physical fitness, resulting in a better nutritional status than non-athletes at Universitas Padjadjaran.
Karakterisasi dan Potensi Antibakteri Ekstrak Kapang Endofit Hasil Isolasi dari Sargassum sp.
Authors: Ridhwan Muhammad , Radiastuti Nani , Bahri Saiful , Muhammad Alfianur Azmi , Dwikencana Windy , Haribowo Dinda Rama , Solihat Nur Amaliah , Ramadhan Firdaus
Published: December 2024

The bioactive potential in Sargassum sp. and its direct use is expected to reduce its population in nature if used continuously. Using endophytic fungi from the host is a solution for obtaining bioactive compounds from Sargassum sp. The purpose of this study was to characterize endophytic fungi in Sargassum sp. and its potential as an antibacterial agent. Endophytic fungi were isolated using the direct planting technique, endophytic fungi were characterized through microscopic and macroscopic observations. Extraction was performed with two organic solvents, namely ethanol and ethyl acetate. Antibacterial potency was tested using the agar diffusion method using Staphylococcus aureus, Bacillus subtilis, Escherichia coli, and Salmonella typhi. Based on the results, two mold isolates, D3P1 and D4P1, were obtained. The ethyl acetate extract of D3P1 had the highest inhibition zone for Bacillus subtilis bacteria, with the highest inhibition zone being 23.2 mm for Bacillus subtilis and the smallest being 17 mm for Escherichia coli. The ethyl acetate extract of D3P1 had the highest inhibition zone compared to the ethyl acetate extract of D4P1 and the ethanol extract of D3P1 and D4P1. The GC-MS analysis identified four compounds that have been identified in the ethyl acetate extract of D3P1 isolates, among others, 2,3-Butanediol, Phthalic acid, 1,2-Benzenedicarbocylic acid, and 1-Anthracenamine. Phthalic acid and 1,2-Benzenedicarboxylic acid compounds have the potential as antibacterial.
Uji Aktivitas Antibakteri dan Antioksidan dari Metabolit Ekstraseluler Bakteri Endofit Tumbuhan Mahang (Macaranga bancana)
Authors: Chang Helen , Pujiyanto Sri , Prastya Muhammad Eka , Primahana Gian , Yuswan Apriza , Retnowati Dwi , Permatasari Vera
Published: December 2024

The increasing pollution which promotes accumulation of free radicals and a significant number of bacterial resistances to antibiotics have prompted various efforts to search for new sources of bioactive compounds. The aim of this study was to investigate the antibacterial and antioxidant properties of bioactive compounds produced by endophyte bacteria from M. bancana. The most potential bacterial isolate was extracted its active constituents until obatined crude extract and tested using disc diffusion technique and detemined MIC and MBC values. Antioxidant properties using DPPH radicals were performed followed by GC-MS analysis of its crude extract. We obtained that MB3.1 isolate exhibited antibacterial activity against all four tested bacteria including Escherichia coli strain ATCC 8739, Pseudomonas aeruginosa strain ATCC 9027, Staphylococcus aureus strain ATCC 25923, and Bacillus subtilis strain ATCC 6633. The best MIC values of this extract were shown against B. subtilis with an MIC value of 39.06 μg/ml. Further, MB3.1 extract showed a moderate antioxidant activity with an IC50 value of 248.19 μg/ml. GC-MS analysis of MB3.1 extract revealed 10 dominant compounds, including phenylethyl alcohol, benzeneethanol, 4-hydroxy, and tryptophol, which might be responsible for the antibacterial and antioxidant properties.
Isolasi dan Identifikasi Cendawan Endofit Akar Anggrek Epifit Vanda sp. dan Anggrek Terestrial Spathoglottis plicata
Authors: Rahayu Nadiya Dwi , Sukarno Nampiah , Listiyowati Sri , Rafi Mohamad , Sandra Edhi , Mursidawati Sofi , Risna
Published: December 2024

Endophytic fungi play an important role in the orchid lifecycle by aiding seed germination and plant development. Information on the diversity of endophytic fungi in Indonesian orchids, particularly Vanda epiphytic orchid and Spathoglottis terrestrial orchid, is still limited. This study aimed to isolate and identify endophytic fungi from the roots of Vanda sp. and Spathoglottis plicata orchids collected from Banjarbaru, South Kalimantan, and Kendari, Southeast Sulawesi. Isolation was performed using Potato Sucrose Agar (PSA) medium, and morphological identification was carried out through macroscopic and microscopic observations. A total of four endophytic fungal isolates were identified, including Nigrospora sp. and Penicillium sp. from Vanda sp. roots, and two isolates of Fusarium sp. from Spathoglottis plicata roots. The four fungal isolates obtained had aerial mycelium and septate hyphae, as well as conidia with diverse shapes. The diversity of endophytic fungi in orchid species could be influenced by the fungal affinity on the specific microhabitat conditions of each tissue and host plant species.
Probiotics on Commercial Fish Growth: A Meta-Analysis
Authors: Ariyanto Yogy Satria , Anika Mutia
Published: December 2024

Probiotics are widely used in fish diets to improve health and growth, but a detailed analysis of their impact on fish growth performance has been lacking. This study conducted a meta-analysis of 86 relevant articles out of 627 identified, focusing on specific growth rate (SGR) and feed conversion ratio (FCR). The study examined the effects of different variables, including the number of probiotic strains used, the type of water (freshwater, saltwater, or brackish), and the concentration of probiotics. The results indicated that probiotics had a significant positive effect on both SGR and FCR in fish. There was no notable difference in growth performance between diets with single strains versus multiple strains of probiotics. However, freshwater fish showed a better response to probiotics compared to saltwater and brackish water fish. The analysis found that the minimum effective concentration of probiotics for improving SGR was 7 log CFU/g, while 8 log CFU/g was needed to enhance FCR. Overall, this meta-analysis offers valuable insights into optimizing the use of probiotics in aquaculture, demonstrating that specific factors such as water type and probiotic concentration play critical roles in achieving the best growth performance in fish.
Pengaruh Deterjen Cair terhadap Mortalitas dan Perilaku Ikan Nila (Oreochromis niloticus)
Authors: Amaliah Rizki , Hanifa Lola Nur , Emil Muhammad Farhan Putra , Dheana Puspa Dewi  , Widarto Tri Heru
Published: December 2024

The disposal of detergent waste into water bodies leads to environmental problems. The use of detergents is increasing, and the variety of detergents available is also becoming more diverse. This study examines the mortality and behavior of Nile tilapia (Oreochromis niloticus) in response to liquid detergent contaminants. The research was conducted from March to April 2023 at the Fish Behaviour Laboratory, Faculty of Fisheries and Marine Sciences, IPB University. We used 154 individuals of Nile tilapia measuring 5-7 cm. A total of 90 individuals were used for the preliminary test and most of them died at the highest concentration of 100 ml/L within five minutes. Sixty individuals were used for determining LD50–96 and we found that the LD50–96 was 1.29 ml/L. The behavior of four individuals of tilapia was observed using focal animal sampling in four sublethal concentrations. The results show that the detergent contaminant inhibits oxygen diffusion and damages the physiological functions of the tilapia. The detergent concentration level also affects the operculum opening and closing behavior, movement, feeding response, and mortality.
Produksi Jamur Merang (Volvariella volvacea (Bull. ex. Fr) Sing). pada Dua Jenis Limbah Kapas
Authors: Sudirman Lisdar Idwan , Rosita Iros , Dharmaputra Okky Setyawati
Published: December 2024

One of the substrates for the growth of straw mushrooms is cotton waste. Based on the cellulose content, trash cotton and dust cotton were selected as substrates. This research was conducted twice at the dry season. The 3,000 g production substrates were a mixture of trash cotton and straw in a ratio of 2:1 (T2J1) and 1:1 (T1J1), dust cotton and straw in a ratio of 2:1 (D2J1) and 1:1 (D1J1). Previously, cotton and straw with the addition of 8% rice bran and 3% lime were composted separately, then mixed, pasteurized and inoculated with 2.5% of spawn. The D2J1 substrate produced higher number and bigger of fruit bodies, with the biological efficiency (BE) of   21.22 and 23.03%  for the first and the second experiments, while the BE of T1J1 were only 16.76%  and 5.84% and those of D1J1 were 15.63% and 12.45%, those of T2J1 were 16.76% and 0.22% for the first and second experiment respectively. The lowest BE value in these experiments due to incomplete vegetative phase, along with the contamination of Trichoderma sp. In conclusion, the production of straw mushroom fruiting bodies depends on the type of cotton and its ratio to straw.
Perilaku Defensif Lebah Apis cerana Terhadap Stimulus Isopentil Asetat (IPA)
Authors: Winnie Ruth Martha , Raffiudin Rika , Atmowidi Tri
Published: December 2024

Honey bee workers perform colony defense behavior to maintain colony integrity against predators. The aim of this research was to explore the response of A. cerana defensive behavior by using Isopentyl Acetate (IPA) as the stimulus which is the main volatile compound in the venom. Five concentrations of IPA volume i.e. 10, 20, 30, 40, and 50 µL IPA were used as the stimulus and each volume was pipetted to a cotton ball. The cotton ball was placed 10 cm in front of the hive entrance in oscillatory motion for five minutes. Natural defensive behavior of A. cerana (balling behavior), balling temperature and A. cerana predator were observed. Observation of defensive behavior was conducted by using colonies A. cerana obtained from Parung Panjang, Bogor and Nyalidung, Sukabumi; and using colonies A. cerana obtained from Sumedang and Banjarsari, Lebak. Based on the research, five A. cerana defensive behavior responses were observed, i.e.: guarding in front of bee hive entrance, recruitment at the hive entrance, fly toward the cotton ball, balling around the hive entrance, and balling on cotton ball. A. cerana showed defensive behavior due to IPA stimulus, however, there was no significant difference (P>0.05) with the variety IPA stimulus volume. We found the temperature of 44°C inside the natural balling of A. cerana defense behavior, as the colony defense mechanism in response to the natural predator Vespa sp. wasp.
Development of Learning Media Digital Pop-Up Book Based Interactive Powerpoint Material Hearing Material Grade Five Elementary School
Authors: Huda Muhammad Aziz Nur , Kiptiyah Siti Maryatul
Published: December 2024

The creation of pop-up book learning materials based on PowerPoint can improve learning results and student interest. The purpose of this study was to determine the feasibility pop-up book learning materials based on PowerPoint and its effect on students' listening comprehension on sound-based material. This research is a development research (R&D) using the ADDIE model development design, which consists of five stages namely analysis, design, development, implementation, and evaluation. The results showed that the effectiveness of PowerPoint-based pop-up book was 97% based on the average validation of media experts, 95% based on the validation of teaching material experts, 95% based on the results of the classroom teacher response questionnaire and 95% based on the results of the student response questionnaire. Pop-up books with a PowerPoint foundation fall under the category of educational resources that are useful for learning. The N-gain test results also show that the learning media developed by researchers are in the very feasible category. In other words, it can be concluded that PowerPoint-based pop-up book learning media is effective, practical and efficient in improving student learning outcomes in elementary schools.
Application of Interactive Virtual Lab Media Based on a STEM Approach in Improving Students' Scientific Literacy and Learning Motivation
Authors: Pane Eva Pratiwi , Lubis Nenni Faridah , Simarmata Gayus
Published: December 2024

One of the developments in the world of education is using virtual labs as a medium for carrying out practical work. The aim of this research is to determine the application of using interactive virtual lab practicum media based on a STEM approach in increasing students' scientific literacy and learning motivation. The subjects of this research were students in the odd semester of the 2023/2024 academic year who took basic chemistry practical lectures on the topic of reaction rates. The research method uses a quantitative approach with a quasi-experimental design in the form of a one group pretest and posttest design. The instruments used in this research were a multiple-choice test to measure scientific literacy and a questionnaire to measure learning motivation. Data analysis in this study used descriptive statistics including n-gain and percentage calculations. Based on the results of data analysis, it was found that the increase in students' scientific literacy was 0.46 with moderate criteria. Scientific literacy skills have increased significantly in the aspect of explaining scientific phenomena by 82%. Student learning motivation also increased with an average of 77% before learning to 83% after learning.
Effectiveness of Block Programming and Quarky Robots to Improve Computational Abilities Thinking through the STEMC Approach
Authors: Muzakiah Muzakiah , Irwandi Irwandi , Yusibani Elin , Sari Intan Mulia , Omar Romarzila , Oktavia Rini
Published: December 2024

The results of PISA 2022 show that Indonesian students are still weak in science literacy, mathematics, and technology-based problem solving, which are the basis for developing computational thinking (CT) skills. CT includes four primary indicators: decomposition to break down significant problems into smaller parts, pattern recognition to find similarities in data, abstraction to filter out irrelevant information, and algorithms to design systematic steps in solving problems. There are many ways to train CT, so this study uses block programming and the Quarky robot. This approach was chosen because it is visual and interactive and makes it easier to apply CT concepts practically, making it suitable for building 21st-century skills. The study was conducted in two high schools in Banda Aceh, involving 20 students from school A and 26 students from school B. Students were divided into two study groups in each school. Learning activities were designed based on STEMC in the form of Student Worksheets (LKPD), which include interactive learning scenarios, block programming challenges, and exploration of the Quarky robot's functions to solve real problems. The activities were arranged in stages, from a basic introduction to applying CT concepts in solving complex problems. The results showed a significant increase in students' CT abilities, especially in the algorithm indicator. Although both schools progressed, school B recorded higher growth, with better pre-test and post-test results than school A. This shows that block programming-based learning and Quarky robots effectively improve CT skills, which is essential in 21st-century education
Effect of Consuming Papaya Leaves, Almond Milk, Green Beans, Moringa Leaves, Ajwa Dates, Soy Milk, and Fennel Leaves on Breast Milk Production in Postpartum Mothers
Authors: Herawati Ita , Lutfiah Lita , Rahmawati Nur’aini Djulkiyyah , Natalia Christine , Santi Firnia , Maemunah Dede , Susanti Ise , Kurni Rita
Published: December 2024

Exclusive breastfeeding rates are often low due to suboptimal breast milk production, which impedes infants' nutritional needs. This issue is frequently attributed to poor maternal nutrition, unbalanced diets, and irregular food consumption. Breast milk production relies on hormonal changes, notably the dominance of prolactin over progesterone and estrogen during childbirth. To address this, a study was conducted to evaluate the impact of specific foods boiled papaya leaves, almond milk, green beans, moringa leaves, ajwa dates, soy milk, and fennel leaves—on breast milk production. Employing a quasi-experimental design with a one-group pretest-posttest approach, the study involved 56 postpartum mothers whose milk production was substandard. These participants were selected in March 2023 using purposive non-probability sampling. A paired t-test was performed for bivariate analysis. Results indicated a significant improvement in milk production, with a p-value of 0.000, demonstrating that the consumption of these foods positively affects lactation. Consequently, it is recommended that breastfeeding mothers incorporate these foods into their diet to enhance milk production and support exclusive breastfeeding. Regular consumption of these specific foods can help meet infants' nutritional needs more effectively.
Predicting the Effect of Magnetic Acquisition Using CrowdMag Android App on Fundamental Magnetic Concepts Mastery in Basic Physics
Authors: Jufri  , L Rizky Fatmalasari , Naston La
Published: December 2024

If the concept of the magnetic field is categorized as one of the physics concepts considered difficult by some students, then classroom instruction itself is not sufficient to explain it. This research reveals that integrating magnetic acquisition using the Android application CrowdMag in learning the concept of the magnetic field can be an effective solution. Testing 32 (on thirty-two) Faculty of Teacher Training and Education (FKIP) Universitas Darussalam Ambon students showed that magnetic acquisition using the Android application CrowdMag had a significant effect on the mastery of the magnetic field concept. This effect is not due to chance, as evidenced by a significant regression coefficient β and an F-calculated value greater than the F-table value, as well as a strong and linear correlation between the variables of magnetic acquisition and the mastery of the magnetic field concept. The resulting regression model (Y = 31.271 + 0.584X) can be used to predict the effect of magnetic acquisition using the Android application CrowdMag on the mastery of basic physics concepts of magnetic fields for students of FKIP Unidar Ambon.
Periodontal Care Needs In Diabetic Patients: A Study Of The Prolanis Group In Banjarbaru City
Authors: Utami Naning Kisworo , Amperawati Metty , Ulfah Rasuna , Nurwati Bunga , Hammad
Published: December 2024

South Kalimantan has seen a significant rise in dental and oral health issues, particularly periodontal diseases, which are prevalent among diabetic patients. This research aimed to analyze the periodontal status and the corresponding treatment needs of the Prolanis group, consisting of diabetic mellitus (DM) patients, at Sungai Ulin Health Center and South Banjarbaru Health Center, Banjarbaru City, during the second year of the study. A descriptive-analytical approach was employed to assess the periodontal tissue condition using the Community Periodontal Index of Treatment Needs (CPITN). A total of 65 respondents were examined, and the results indicated that 49.23% of the participants had tartar, while 30.78% displayed healthy periodontal conditions. Counseling on oral hygiene and scaling treatments were provided. The study emphasizes the importance of regular dental check-ups and proper oral hygiene practices, particularly in diabetic patients, to prevent further complications. Recommendations include brushing teeth twice daily and reducing the intake of cariogenic foods.
The Influence of Project Based Learning Model on Creative Thinking Skills and Physics Learning Outcomes
Authors: Wulandari Nala Oktavia , Sutrio  , Doyan Aris , Rahayau Satutik
Published: December 2024

This study examines the impact of the Project-Based Learning (PjBL) model on high school students' creative thinking skills and physics learning outcomes. Using a quasi-experimental design with a Nonequivalent Control Group, data were collected through pre-tests and post-tests from 71 students divided into experimental and control classes at SMAN 1 Gerung. The findings reveal that the PjBL model significantly enhances students' creative thinking skills, with the experimental class showing a higher improvement (from 42.58 to 76.29) compared to the control class (from 37.41 to 67.77). Additionally, the PjBL model effectively improves cognitive, affective, and psychomotor outcomes, as evidenced by higher post-test scores and improved engagement, collaboration, and responsibility among students in the experimental class. These results suggest that the PjBL model is an innovative and effective approach to fostering 21st-century skills such as creativity, problem-solving, and critical thinking while addressing the limitations of traditional, teacher-centered methods. This research contributes to the development of interactive and student-centered teaching strategies, particularly in physics education, and provides valuable insights for enhancing academic and life skills in students.
Sosialisasi Pelatihan Penanggulangan Bencana di Desa Bilebante Kecamatan Pringgarata, Kabupaten Lombok Tengah
Authors: Aini Dinatul , Anshari Buan , Safitri Auliya , Rizki Beni , Mardiana  , Maly Solhana Arwin , Aini Zahratul , Ulfayati Sri , Muffidah Muhammad Asrarul , Pratama Angga Bagus
Published: December 2024

Mitigasi bencana merupakan salah satu upaya untuk mengurangi risiko bencana. Managment  mitigasi yang tepat dapat membatu  dalam penanggulangan bencana. Dalam penanggulangan bencana masyarakat harus mengenali jenis-jenis bencana dan siklus bencana  baik dari pra bencana, saat bencana, dan pasca bencana. Desa Bilebante merupakan Desa yang terletak  di Kabupaten Lombok Tengah dengan  potensi bencana  gempa bumi dan kekeringan yang tinggi. Tujuan dari kegiatan  ini adalah untuk meningkatkan kewaspadaan masyarakat Desa Bilebante terhadap risiko bencana. Metode yang digunakan pada kegiatan ini adalah metode ceramah dan diskusi. Metode  ceramah merupakan metode penampaian materi dengan secara lisan dengan mengcangkup ide, prinsip,dan informasi dari sebuah topik. Sasaran peserta pada kegiatan ini  adalah Kepala Dusun, Karang Taruna, Ketua Remaja setiap dusun, Bintara Pembina Desa, Bhabinkamtibmas, perwakilan Guru Sekolah Dasar, dan masyarakat setempat dengan  total jumlah peserta sebanyak 28  orang. Hasil dari kegiatan ini diharapkan mampu meningkatkan pengetahuan masyarakat  guna meningkatkan  kewaspadaan terhadap risiko bencana.
Associated Tinnitus Risk Factors in Patients with Type 2 Diabetes Mellitus
Authors: Puryani Noorma Zuliana , Yenny Yenny
Published: December 2024

Tinnitus risk factors for type 2 diabetes mellitus (T2DM) are still under debate. Our study objective was to find tinnitus prevalence and principal risk factors in community-dwelling T2DM subjects. It was an analytical observational cross-sectional design study conducted from August to October 2023 at a public health center in West Jakarta. The consecutive non-random sampling method included 140 ambulatory T2DM study subjects. Tinnitus Screener and Tinnitus Handicap Inventory assessed tinnitus presence and severity. Age, sex, T2DM duration, fasting and 2-hour post-prandial blood glucose concentrations, lipid profile, blood pressure, and severity of hypertension were extracted from medical records. Data analysis was by chi-squared or Fisher exact tests, followed by multiple logistic regression analysis, with statistical significance set at p<0.05. The subjects' mean age was 54.71±5.33 years, and T2DM duration was 8.75±2.55 years. Tinnitus prevalence was 92 (65.17%), with 44 subjects (47.8%) having moderate tinnitus. Multivariable logistic regression findings: age (p=0.576), T2DM duration (p=0.116), total cholesterol (p=0.053), HDL-cholesterol (p=0.425), hypertension (p=0.046). Hypertension increased the risk of tinnitus by 2.289 times in T2DM subjects after adjusting for age, T2DM duration, and total and HDL cholesterol. Hypertension is the main tinnitus risk factor. The high tinnitus prevalence in our T2DM subjects requires regular screening for auditory function and control of blood pressure to minimize tinnitus risk in T2DM subjects.