bluuebunny/crossref_metadata_2025 huggingface dataset:
Perubahan Karakteristik Campuran Aspal AC-WC dengan Penambahan Sampah Plastik
Authors: Subandi Adi , Sartono Sartono
Published: August 2023

ABSTRAKPenelitian ini bertujuan untuk mengetahui pengaruh penambahan sampah plastik terhadap kualitas campuran aspal AC-WC, serta mengetahui berapa besar prosentase sampah plastik yang bisa ditambahkan untuk campuran aspal AC-WC. Manfaat dari penelitian yaitu mengetahui kinerja atau kualitas dari campuran aspel AC-WC setelah ditambah sampah plastik dengan prosentase tertentu terhadap volume campuran, yang diharapkan juga akan mengurangi volume sampah plastik yang ada dimasyarakat serta meningkatkan kualitas dari campuran aspal panas itu sendiri. Dalam penelitian ini penulis bekerja sama dengan PT. ADHI KARYA AMP Kawasan Cirebon sebagai tempat laboratorium pengujian dan skaligus sumber bahan. Hasil penelitian berupa data laboratorium dengan variasi penambahan sampah plastik dengan beberapa skenario penambahan penambahan sampah plastik dengan besaran prosentase 0%, 2%, 4%, 6% dan 8% dengan kadar aspal optimum 5,9%.Kata kunci: campuran aspal, sampah plastik, aspal AC-WC ABSTRACTThe study has to investigate affect from the adding plastic waste to the AC-WC asphalt mixture quality, and to find out that percentage of plastic waste could be added to the AC-WC asphalt mixture. The research benefit is knowing the performance or quality of the AC-WC asphalt mixture after adding plastic waste with a certain percentage of the mixture volume, that is expected to reduce the plastic waste at community and also it can improve the hot asphalt mixture quality itself. In this study the authors cooperate with PT. ADHI KARYA AMP for Cirebon area is a testing laboratory and also a source of materials. The results are laboratory data with variations plastic waste addition with several scenarios of adding additional plastic waste with percentages of 0%, 2%, 4%, 6% and 8% with an optimum asphalt content of 5,9%.Keywords: asphalt mix, plastic waste, AC-WC asphalt
Studi Perbandingan Penurunan Fondasi Grup Menggunakan Program Plaxis 3D dan Settle3D Studi Kasus Jembatan Wampu
Authors: Dito Muhammad Farrel , Ikhya Ikhya , Fahmi Mufidhiansyah
Published: August 2023

ABSTRAKFondasi grup tiang adalah jenis fondasi yang umum digunakan pada struktur jembatan. Salah satu yang perlu diperhatikan dalam analisis suatu fondasi adalah penurunan yang dapat terjadi pada fondasi tersebut. Penurunan dapat terjadi karena suatu lapisan tanah yang mengalami pembebanan akibat beban yang diperoleh mengakibatkan terjadinya penurunan elevasi tanah dasar. Penelitian ini bertujuan untuk melakukan analisis perbandingan penurunan yang dapat terjadi pada program Plaxis 3D dan Settle3D. Analisis perbandingan juga dilakukan dengan melakukan variasi geometri berupa variasi ketebalan pilecap dan ketebalan lapisan tanah di bawah fondasi. Hasil berupa nilai penurunan yang terjadi pada Settle3D akan dibandingkan dengan hasil penurunan pada Plaxis 3D yang menggunakan pendekatan FEM (Finite Element Method).Kata kunci: fondasi grup, penurunan, Plaxis 3D, Settle3D ABSTRACTPile group foundations are a type of foundation commonly used in a bridge structure. One of the things to note in the analysis of a foundation is the settlement that can occur on that foundation. The settlement can occur because of the load obtained from the upper structure. The study aims to conduct a comparative analysis of the settlement that can occur in Plaxis 3D and Settle3D programs. Comparative analysis is also using geometric variations in pilecap thickness and soil layer thickness under the foundation. The result of a settlement value that occurs in Settle3D will be compared to the result of a settlement in Plaxis 3D which is using the FEM (Finite Element Method).Keywords: group foundation, settlement, Plaxis 3D, Settle3D
Project Communication Management in a Micro Small Medium Enterprises (MSMES) in a Construction Project
Authors: Wiradinata Irvan
Published: August 2023

ABSTRACTMicro, small, and medium enterprises (MSMEs) have become Indonesia's most essential and strategically important national economic drivers. This research focuses on an MSME involved in a construction project in 2021. This research aims to shed light on the project communication management of an MSME organization, PT Nata Kota Nusantara, simply Natakota, a micro-scale enterprise based in Bogor. Natakota was engaged in a civil construction project in a remote site area at PT GDE (GDE) in Ciwidey, Bandung. GDE is a state-owned enterprise focusing on geothermal energy and power generation. Virtual ethnography, observation, and discourse analysis were performed to reveal the project communication management process within the organization. It was unveiled that Natakota used Google Spreadsheet as a form of free and open-source software (FOSS) as their primary communication tool during the project execution. Actor-Network Theory (ANT) explains that the actor is the prime entity that shapes, drives, and accelerates the communication process within the network. This research observed the communication and collaboration between employees on several Google Spreadsheet files. In a project execution phase, communication is essential to obtain a productive project. Project communication plays a central part in communicating information flow to execute that project successfully. The results of this research show that several features in Google Spreadsheet play as actors in the ANT framework, which shapes, drives, and accelerates the internal communication process in the organization. Additionally, it appears that Google Spreadsheet could offer a competitive low-cost option for MSMEs looking to manage internal communications effectively and efficiently.Keywords: collaboration, communication, MSMEs, organization, project
Pengaruh Spasi antar Helix terhadap Daya Dukung Fondasi Helical Pile pada Tanah Limestone dengan Metode Hoek Brown dan Mohr Coloumb
Authors: Yakin Yuki Achmad , Pratiwi Desti Santi , Sugiarto Yanuar Agis
Published: August 2023

ABSTRAKRencana pembangunan pembangkit listrik tenaga surya di bali. Karena pembangunan berada di lokasi bukit tinggi dekat laut yang dimana memiliki hembusan angin yang cukup kuat sehingga memengaruhi kuat aksial tekan dan aksial tarik. Oleh karena itu alternatif untuk menahan beban tekan dan tarik yaitu menggunakan fondasi Helical pile dimana lokasi penempatanya di bebatuan tanah Limestone. Dalam pemodelan fondasi helical pile divariasikan spasi helix nya yaitu 0,1 m; 0,15; m 0,2 m; dan 0,3 m. Hasil Deformasi dipemodelan plaxis 3D ada yaitu daya dukung ultimate dengan perbandingan model tanah Hoek Brown dan Mohr Coloumb dimana nilai daya dukung nya berbeda karena parameter dan spasi helix mempengaruhi nilai daya dukung. Untuk perhitungan analitis daya dukung menggunakan 2 metode yaitu Individual Bearing dan Cylindrical Shear. Tahapan perhitungan 2 metode memiliki nilai daya dukung yang berbeda berdasarkan nilai variasi spasi antar helix.Kata kunci: helical pile, Plaxis 3D, Hoek Brown, Mohr Coloumb ABSTRACTPlans to build a solar power plant in Bali. Because the development is located on a high hill near the sea which has strong enough wind gusts that affect axial compressive and axial tensile strength. Therefore an alternative to withstand compressive and tensile loads is to use a Helical pile foundation where the location is placed in Limestone soil rocks. In modeling the helical pile foundation, the helix spacing varies, namely 0.1 m 0.15 m 0.2 m and 0.3 m. The results of deformation in 3D plaxis modeling are the ultimate bearing capacity with a comparison of the Hoek Brown and Mohr Coloumb soil models where the bearing capacity values are different because the parameters and helix spacing affect the bearing capacity values. For the analytical calculation of the carrying capacity using 2 methods, namely Individual Bearing and Cylindrical Shear. The calculation stages of the 2 methods have different carrying capacity values based on the variation in the spacing between helix.Keywords: helical pile, Plaxis 3D, Hoek Brown, Mohr Coloumb
Studi Eksperimental Pengaruh Variasi Panjang Polypropylene Fibre terhadap Performa Beton
Authors: Sabara Akhmad Ilham Ramadhan , Rifqi Muhammad Ryan , Vanessa Vanessa , Febriant Mohammad , Fadiah Dianati
Published: August 2023

ABSTRAKSalah satu inovasi untuk meningkatkan performa beton adalah penambahan serat, seperti serat polypropylene. Penelitian ini bertujuan untuk mempelajari pengaruh variasi panjang serat polypropylene terhadap kinerja beton. Hasil penelitian menunjukkan bahwa workability beton mengalami pengurangan akibat serat yang mengalami kekusutan terutama pada serat makro. Selain itu diamati juga terjadi peningkatan kuat tekan beton diakibatkan terjadinya peningkatan mechanical bonding. Kuat tarik belah dan lentur murni beton tidak mengalami perubahan signifikan dengan penambahan serat. Namun, Penambahan serat terbukti dapat membantu mengurangi pelebaran retak secara efektif. Penambahan serat pada campuran beton meningkatkan mekanisme keruntuhan beton dengan menyediakan daktilitas yang lebih baik terutama pada serat mikro. Penelitian ini diharapkan dapat memberikan solusi efektif dan ekonomis untuk meningkatkan kinerja beton dengan penambahan serat polypropylene.Kata kunci: beton serat, serat Polypropylene, slump, kuat tekan, kuat tarik belah, kuat lentur murni, daktilitas betonABSTRACTAn innovative way to improve concrete performance could be the addition of fibers, such as polypropylene fibers. This research aims to study the effect of polypropylene fiber length variation on concrete performance. The results showed that the workability of concrete was reduced due to fiber tangling, especially in macro fibers. In addition, it was also observed that there was an increase in the compressive strength of concrete due to an increase in mechanical bonding. The split tensile and flexural strength of concrete did not change significantly with the addition of fibers. However, fiber addition was found to help reduce crack widening effectively. The addition of fibers to the concrete mix improves the collapse mechanism of concrete by providing better ductility especially in the case of micro fibers. This research is expected to provide an effective and economical solution to improve the performance of concrete with the addition of polypropylene fibers.Keywords: fiber concrete, Polypropylene fibre, slump, compressive strength, split tensile strength, pure flexural strength, concrete ductility
Pengaruh Subtitusi Parsial Variasi Tepung Kaca Terhadap Kuat Tekan Beton Geopolimer
Authors: Angelika Sirait Kristin , Desimaliana Erma , Khanza Mirara
Published: August 2023

ABSTRAKSalah satu masalah utama yang dihadapi adalah tingginya emisi karbon dioksida (CO2) yang dihasilkan semen selama proses pembangunan dan penggunaan gedung. Penelitian ini dilakukan dengan membuat perbandingan agregat dan binder-nya sebesar 70%:30%, sebagai pengganti material pengikat yang digunakan yaitu fly ash dan tepung kaca, yang direaksikan dengan alkali aktivator untuk menghasilkan binder pada beton geopolimer. Alkali aktivator yang digunakan yaitu larutan NaOH konsentrasi 10M dan Na2SiO3 dengan perbandingan 1:3. Pada penelitian ini dilakukan 4 variasi benda uji berbentuk silinder ukuran 10 cm x 20 cm sebanyak 48 buah dengan perbandingan tepung kaca dan fly ash yaitu 0%:100% (variasi A), 10%:90% (variasi B), 15%:85% (variasi C), dan 25%:75% (variasi D). Metode membran diaplikasikan untuk perawatan benda uji, selanjutnya dilakukan pengujian kuat tekan beton pada umur 7, 14, dan 28 hari. Berdasarkan hasil pengujian kuat tekan beton geopolimer tertinggi yaitu pada variasi B halmana 10% tepung kaca dengan 90% fly ash, dengan nilai masing-masing sebesar 21,12 MPa; 26,80 MPa; dan 28,65 MPa pada pengujian umur beton geopolimer 7 hari, 14 hari, dan 28 hari.Kata kunci: beton geopolimer, tepung kaca, fly ash, alkali kktivator, kuat tekan beton ABSTRACTOne of the main problems faced is the high emission of carbon dioxide (CO2) produced by cement during the process of building and using the building. This research was conducted by making a ratio of aggregate and binder of 70%:30%, as a substitute for the binding material used, namely fly ash and glass powder, which were reacted with an alkaline activator to produce binder in geopolymer concrete. The alkaline activator used was a 10M concentration of NaOH and Na2SiO3 with a ratio of 1:3. In this study, 4 variations of cylindrical specimens measuring 10 cm x 20 cm were carried out with 48 pieces with a ratio of glass powder and fly ash, namely 0%:100% (variation A), 10%:90% (variation B), 15%: 85% (variation C), and 25%:75% (variation D). The membrane method was applied for the treatment of the specimens, then the compressive strength of the concrete was tested at the age of 7, 14 and 28 days. Based on the results of the geopolymer concrete compressive strength test, the highest was variation B, which was 10% glass flour and 90% fly ash, with each value of 21.12 MPa; 26.80 MPa; and 28.65 MPa on the geopolymer concrete age test of 7 days, 14 days and 28 days.Keywords: geopolymer concrete, Glass powder, fly ash, alkaline activator, concrete compressive strength
Does capital adequacy ratio matter during the Covid-19 outbreak? Evidence on state-owned banks in Indonesia
Authors: Diaz Caecilya Putri , Yuniarti Sari , Aristanto Eko , Ardianto Yusaq Tomo
Published: August 2023

The Covid-19 epidemic has brought significant changes in the financial performance of the Indonesian banking sector. Weak economic indicators lead to a reduction in bank capital due to insufficient working capital loans. This study was conducted to find out changes in the capital adequacy ratio of state-owned banks in Indonesia during the Covid-19 pandemic. The data set is based on quarterly financial reports of state-owned banks for the 2020-2021 period. We prove that lending and NPL have an effect on CAR. In condition, there was a significant decrease in credit and a significant increase in non-performing loans starting in the third quarter of 2020 and increased slightly in the third quarter of 2021. Meanwhile, the capital adequacy ratio tends to be stable, because the government has strengthened bank capital. The study shows that state-owned banks can maintain CAR consistently and safely. This level of safe defense increases capital consistently in line with growth in lending while maintaining banking industry regulations.
The effect of income on net profit of banks before and during the Covid-19 pandemic
Authors: Lamablawa Anjelina , Prihantono Eko Yuni , Pratama Dimas Eka
Published: August 2023

During the Covid-19 pandemic, the banking sector experienced a decline in performance in terms of funding and lending. This downturn had significant implications on the income and net profit of banks, leading to operational challenges. This study aims to examine the effect of income on net profit before and during Covid-19 in State-Owned Banks (SOBs) in Indonesia. We included all existing SOBs in Indonesia, totaling 64 firms-quarterly observations during the period from 2018 to 2021. The research methodology involved regression analysis and a comparative study using Paired Sample Test. Our findings indicate that income has a significant impact on net profit. Furthermore, we demonstrate that there was no difference in bank income before and during the Covid-19 pandemic. However, there were variations in the net profit obtained by the banks. This phenomenon can be attributed to decreased interest margins as banks had to lower the interest rates on deposits without reducing the interest rates on loans.
Transmission Problem Between Two Herschel-Bulkley Fluids in a Three Dimensional Thin Layer
Authors: Saf Salim , Messelmi Farid
Published: August 2023

The paper is devoted to the study of steady-state transmission problem between two Herschel-Bulkley fluids in a three dimensional thin layer.
Measurement of Doctoral Students’ Intention to Use Online Learning: A SEM Approach Using the TRAM Model
Authors: Singh Bhati Narender , Srivastava Sachin , Singh Rathore Jaivardhan
Published: August 2023

Aim/Purpose: The study aims to supplement existing knowledge of information systems by presenting empirical data on the factors influencing the intentions of doctoral students to learn through online platforms.

Background: E-learning platforms have become popular among students and professionals over the past decade. However, the intentions of the doctoral students are not yet known. They are an important source of knowledge production in academics by way of teaching and research.

Methodology: The researchers collected data from universities in the Delhi National Capital Region (NCR) using a survey method from doctoral students using a convenience sampling method. The model studied was the Technology Readiness and Acceptance Model (TRAM), an integration of the Technology Readiness Index (TRI) and Technology Acceptance Model (TAM).

Contribution: TRAM provides empirical evidence that it positively predicts behavioral intentions to learn from online platforms. Hence, the study validated the model among doctoral students from the perspective of a developing nation.

Findings: The model variables predicted 49% of the variance in doctoral students’ intent. The TRAM model identified motivating constructs such as optimism and innovativeness as influencing TAM predictors. Finally, doctoral students have positive opinions about the usefulness and ease of use of online learning platforms.

Recommendations for Practitioners: Academic leaders motivate scholars to use online platforms, and application developers to incorporate features that facilitate ease of use.

Recommendation for Researchers: Researchers can explore the applicability of TRAM in other developing countries and examine the role of cultural and social factors in the intent to adopt online learning.

Future Research: The influence of demographic variables on intentions can lead to additional insights.
Biyogaz üretim süreçlerinde kullanılacak en uygun risk değerlendirme metodolojisinin analitik hiyerarşi prosesi ile belirlenmesi
Authors: YILDIRIM Rıfat
Published: August 2023

Biyodizel, biyogaz ve biyoetanol dünya genelinde artan enerji taleplerini karşılamak için kullanılabilecek enerji kaynaklarındandır. Enerji üretiminde önemli yere sahip olan biyogaz tesisleri, işin doğası veya kullanılan ekipmanlar nedeniyle, bazı tehlikeler ve buna bağlı riskler içermektedir. Bu çalışmanın amacı, biyogaz üretim işletmelerinde risk değerlendirme yöntemlerinin Analitik Hiyerarşi Süreci (AHS) yardımıyla belirlenmesidir. Analitik hiyerarşi sürecinde kriterler “Zaman”, “Parametre Sayısı”, “Analist Yetkinliği”, “Veri Toplama Basamakları”, “Sektörel Yaygınlık” ve “Analizin Başarı Oranı” olarak belirlenmiştir. Çalışmanın alternatifleri ise “L Tipi Matris”, “X Tipi Matris”, “Fine Kinney” ve “FMEA” olarak seçilmiştir. Çalışmada “Başarı Oranı” kriteri 0,46 puan ile en yüksek ağırlıklı kriter, FMEA metodu ise 0,606 puan ile en iyi alternatif olarak belirlenmiştir. Çok tehlikeli ve Tehlikeli sınıfta yer alan biyogaz işletmeleri için “Başarı Oranı” kriteri de oldukça önemlidir. Bu nedenle biyogaz tesislerinde FMEA metoduna alternatif olarak Fine Kinney metodunun kullanımı da göz ardı edilmemelidir.
Sufi Educational Narratives in Wasiat Renungan Masa by TGKH. Muhammad Zainuddin Abdul Madjid
Authors: Atsani Lalu Gede Muhammad Zainuddin , Nasri Ulyan , Walad Muzakkir , Haryadi Lalu Fauzi , Yakin Hakkul
Published: August 2023

The findings of the research indicate that “Wasiat Renungan Masa” contains various narratives of Sufi education that impart spiritual values, ethics, and life concepts within the Sufi tradition. These narratives encompass teachings on the unity of God, the individual's relationship with God, the significance of divine love, submission, as well as spiritual practices that embrace simplicity and introspection. This research provides a deeper understanding of how the narratives of Sufi education within “Wasiat Renungan Masa” reflect and convey the values of Sufism as taught by TGKH. Muhammad Zainuddin Abdul Madjid. The implications of this research offer insights into how Sufi teachings can be applied in daily life and how these narratives can influence the spiritual growth and ethics of individuals.
Synthesis and characterization of hydroxyapatite-nanosilver-clove oil (Eugenia Caryophyllus) as antibacterial in toothpaste preparations against streptococcus mutans bacteria
Authors: Nugroho Browi , Cahyaningrum Sari Edi
Published: August 2023

The formation of dental caries results from the activity of Streptococcus mutans bacteria. One of the efforts to prevent dental caries is using toothpaste containing antibacterial compounds such as hydroxyapatite-nanosilver-clove oil. This study aims to synthesize and characterize hydroxyapatite-nanosilver-cloves oil as an antibacterial that causes dental caries. In this study, physical properties were tested, namely, particle size with PSA, spreadability, stickiness, homogeneity, and chemical properties tested in functional groups with FTIR, pH, and antibacterial activity with the disc diffusion method. This study used 2% hydroxyapatite, ten ppm nanosilver, tween 80, xanthan gum, 70% sorbitol, sodium benzoate, sodium lauryl sulfate, sodium saccharin, calcium carbonate, peppermint, distilled water, clove oil with variations in the addition of concentrations of 1%, 2%, 3%, and 4%. The synthesis results produced a toothpaste preparation made from hydroxyapatite-nanosilver-clove oil, as evidenced by the results of FTIR characterization showing the presence of OH-, CO32-, PO43-, C-H, C-O, and C=O functional groups. PSA results show hydroxyapatite-nanosilver-clove oil has an average size of 4464 nm which is not included in the nanoparticle category (<100 nm). The toothpaste spreadability test resulted in a spread diameter of 5-6 cm, which met the requirements for paste spreadability (5-7 cm), while the adhesion test resulted in adhesion (7-12 seconds) which has not met the ideal requirements (1-6 seconds). The pH measurement resulted in a toothpaste pH of 8.8-9.0 per SNI (4.5-10.5). The homogeneity test of the toothpaste has met the requirements according to SNI, namely the absence of air bubbles, clumps, and separated particles. The antibacterial activity test showed that the hydroxyapatite-nanosilver-clove oil toothpaste formulation was able to inhibit the growth of S.mutans bacteria with the highest inhibition diameter in the variation of adding 4% concentration of clove oil, namely 14.99 mm with normally distributed data (p>0.05). One Way ANOVA statistical analysis showed that the treatment variation had a significantly different effect (p<0.05). These results indicate that adding clove oil into the formulation of hydroxyapatite-nanosilver-clove oil toothpaste can affect its chemical, physical, and antibacterial activity.
AVALIAÇÃO BARIÁTRICA: levantamento dos traços de personalidade predominantes em pacientes pré-bariátricos através do modelo dos cinco fatores de personalidade (Big Five)
Authors:   , Ventura Luana
Published: August 2023

A cirurgia bariátrica é um dos procedimentos mais utilizados em casos de obesidade grau III no mundo, sendo um dos mais efetivos para melhorar a expectativa de vida, e evitar a progressão de doenças relacionadas à obesidade, além da melhora nos fatores físicos e psicológicos que o excesso de peso acarreta. (COSTA et al., 2009). Buscou-se investigar sobre o papel do psicólogo nesse processo, em especial sobre a avaliação psicológica, realizando um levantamento dos traços de personalidade predominantes em pacientes pré-bariátricos através do modelo dos cinco fatores de personalidade (Big Five). Para tal, foi
utilizado a Bateria Fatorial de Personalidade (NUNES; HUTZ; NUNES, 2010) e um questionário sociodemográfico com o objetivo de verificar se existem traços de personalidade comuns a este grupo e de que forma a psicologia iria atuar frente aos
resultados levantados e a uma possível tipagem de personalidade. Os participantes deste estudo incluíram 5 pessoas que estavam em processo de realização da cirurgia bariátrica. Os resultados sugerem uma homogeneidade na amostra em relação às facetas de neuroticismo e abertura, apontando possíveis tendências para depressão e ansiedade, mas uma maior abertura a aceitar intervenções e procedimentos. Uma das contribuições desse estudo foi verificar uma possível tipagem de perfil de personalidade em pacientes deste grupo, principalmente em relação a predominância de fatores como depressão e ansiedade, mas será necessário realizar mais pesquisas com amostras maiores, tanto para levantar os padrões seguros para a liberação da realização do procedimento, quanto para avaliar se os resultados obtidos em avaliação psicológica serão de fato analisados e
utilizados.
Edible Mushrooms and Their Holistic Approach on Health
Authors: Das T , Roy B , Bhattacharyya S
Published: August 2023

During this period of time, mushroom experience changes in functional aspects and consumption areas. Due to its magnificent role in promoting health, it was considered one of the most healthy sources of food. Agaricus spp., Marcrolepoita spp., Auricularia spp, Armillaria spp, Pholoita, Hericium, Grifola spp, Flammulina, and Hypsizygus spp. are some most commonly consumed mushrooms in the world. They provide inexpensive means of nutritious and tasty food worldwide. However, ancient people are also very much aware of their holistic function towards health and that was why they used mushrooms for medicinal purposes in the past onwards. Mushroom plays an important role in the treatment of some lethal diseases like cancer, inflammation, autoimmune disorders, allergy, hypertension, arthritis, hyperglycemia, atherosclerosis, and many more. Meanwhile, researchers still focus on other functions of mushrooms in health science and also explore their anticancerous activity. However, many findings are left to be found in the future. This review paper throws light on the various important mushrooms and their functions related to human health, and also ongoing research towards treating some critical diseases.
Reflexões sobre a Condição Concreta da Evangelização Hoje
Authors: Comblin José
Published: August 2023

O Plano de Pastoral de Conjunto, 1966-1970, publicado pela Conferência Nacional dos Bispos do Brasil, define seis objetivos específicos da ação da Igreja. O segundo dêsses objetivos é formulado assim: «Levar todos os homens à primeira adesão a Cristo, através do anúncio missionário da Palavra e do testemunho de vida evangélica» (pp. 29, 48). Êste mesmo objetivo constitui a linha de trabalho n. 2 (pp. 62-65). Dá-se à segunda linha de trabalho o seguinte título: promover a ação missionária...
Reflexões sobre a Lei Eclesiástica
Authors: Mallmann Lodomilo
Published: August 2023

O Estado teocrático de Israel achava-se, antes da vinda de Cristo, sob a lei do Antigo Testamento. Fôra prescrita por Javé ao povo eleito, a fim de dispô-lo lentamente para a vinda do Salvador. Essa lei, segundo os Atos dos Apóstolos, foi «um jugo, que nem nossos pais nem nós pudemos suportar» (15,10), por causa de seu caráter coativo e externo. Sua finalidade era tornar compreensível a vontade de Deus (Rom 7). Foi dada «para que abundasse o pecado» (Rom 5,20) e como «pedagogo» levasse a Cristo (Gál 3,24). E assim não justificava por si mesma, mas somente em razão do Redentor futuro. Este substituiria a Aliança Antiga pelo Testamento Novo (Rom 10,4)...
Igreja Latina Diante do Casamento
Authors: Hoornaert Eduardo
Published: August 2023

O casamento surge diante da consciência eclesial como uma ‘realidade terrestre’, segundo uma expressão feliz do Padre Schillebeeckx. Realidade esta das mais ‘terrestres’ e complexas: baseado no instinto universal, o encontro conjugal se exprime no entanto nas formas culturais as mais variadas; judeus e romanos, visigodos e francos, africanos e ameríndios possuem os seus costumes e a sua filosofia, a sua religião e os seus preconceitos em torno do tema eterno do Homem e da Mulher...
Exploration of indigenous arbuscular mycorrhizal fungi on Arenga pinnata Merr in post-mining land
Authors:   PT Riset Perkebunan Nusantara, Samal Shaleha Istiqamah , Mansur Irdika ,   IPB University, Junaedi Ahmad ,   IPB University
Published: August 2023

Mining activities have a positive impact that can generate income for the state, but the activities also cause negative impacts in the form of soil damage, vegetation and animal losses to disrupt the ecosystems. Therefore, it is necessary to carry out a reclamation with revegetation using local plant species. PT Berau Coal has conducted revegetation using a local sugar palm plant (Arenga pinnata). The success of sugar palm plant growth in post-mining reclamation land is influenced by several factors, one of it is the symbiosis of the arbuscula mycorrhizal fungi (AMF) with the sugar palm planted by PT Berau Coal. The purpose of this study was to determine the diversity of indigenous spores in the arenga rhizosphere and root colonization of sugar palm plants. Identification of the AMF diversity was carried out by observing the soil taken from the palm rhizosphere with a depth of 0-20 cm and 20-40 cm. Isolation of spores using the wet pouring technique method with centrifuges and AMF spores were identified using the INVAM methods. The observation of AMF colonization on plant roots was carried out through the root staining technique with the Clapp modification method. The results showed that the AMF spores were found in 3 AMF genera at the observation site, namely genus Glomus (15 sp), Acaulospora (3 sp), and Gigaspora (1 sp). The highest spore abundance is genus Glomus sp at a soil depth of 0-20 cm. The AMF structures found colonizing the roots of sugar palm plants are hyphae, vesicles, and spores.
Evaluation of rock slope using q-slope, limit equilibrium and failure probability at andesite mine of Sidomulyo Village
Authors:   University of National Development Veteran Yogyakarta, Akbar Wahyu Nusantara , Wiyono Bagus ,   University of National Development Veteran Yogyakarta
Published: August 2023

For an open pit mine, the rock slope stability is one of the major significant challenges at every stage in the operation. It became a concern from the planning until the mining closure. Mining activities in the research location have entered the mining closure phase and produced the final slope that consists of 4 single slopes with an overall slope height of 65m and an angle of 62° that its stability is not yet known. The actual overall slope has discontinuities which affect the potential for failure. Most of the methods used in geotechnical practice for estimating slope stability are based on the traditional limit equilibrium methods. On the other side, very few empirical techniques exist to assess the slope stability. The empirical method of the Q-Slope is a relatively new methodology for assessing the slope stability in terrains built from rock masses. This method was developed over the last decade by Barton and Bar (2015), with modifications to the original Q-System for application in rock slope stability through the parameter of RQD, Jn, Jr, Ja, O-Factor, Jwice, SRFa, SRFb and SRFc. The stability analysis by Q-Slope method has resulted the slope in stable condition because the value of βQ-Slope > βSlope. The factor of safety limit equilibrium method and probability of failure used the actual geometry and Q-Slope geometry is known in stable condition because it fulfils acceptance criteria with FoS ≥ 1.1 and PoF ≤ 37,5% according to the regulation Ministry of Energy and Mineral Resources Decree 1827/K/30/MEM/2018.
Analisis nilai keekonomian peruntukan lahan bekas tambang batubara sebagai asimilator karbon
Authors:   Teknik Pertambangan Universitas Sriwijaya, Yovanda Ridho , Juniah Restu ,   Teknik Pertambangan Universitas Sriwijaya, Yulianita Anna ,   Ekonomi, Universitas Sriwijaya, Anaperta Yoszi ,   Teknik Pertambangan, Universitas Negeri Padang, Rahmi Hisni ,   Teknik Pertambangan, STTIND Padang
Published: August 2023

The environmental issues that usually arise from mining activities are ex-coal mining lands in the form of mine pits (void) and land (non void) which are not managed properly. The company has an obligation to manage ex-coal mining land so that the environment remains sustainable and benefits the community by carrying out reclamation activities. Reclamation of ex-coal mining land by planting oil palm provides benefits in the form of incomes and as a carbon assimilator. This study aims to analyze the economics value of the ex-coal mining land use as a carbon assimilator by using the extended NPV analysis method. The result of analysis revealed a positive extended NPV value of IDR. 1,961,057,020,-, which means that ex-coal mining land can provide positive benefits as a carbon assimilator.
Analisis neraca air pascatambang pada tailing storage facility
Authors:   Program Studi Teknik Pertambangan, Fakultas Teknik, Universitas Cordova, Akbar M. Anshari , Kusuma Ginting ,   Kelompok Keahlian Teknik Pertambangan, Fakultas Teknik Pertambangan dan Perminyakan, Institut Teknologi Bandung, Benggolo Rudy ,   Kelompok Keahlian Teknik Pertambangan, Fakultas Teknik Pertambangan dan Perminyakan, Institut Teknologi Bandung, Badhurahman Abie ,   Kelompok Keahlian Teknik Pertambangan, Fakultas Teknik Pertambangan dan Perminyakan, Institut Teknologi Bandung
Published: August 2023

Tailings Storage Facility (TSF) has environmental impacts and risks arising from the tailings storage. Water balance is an important component in TSF management. In this study, the water balance was analyzed to determine the method of handling TSF during mine closure, to reduce the risk of environmental pollution. Analysis of the rainfall and potential evaporation parameters was used to calculate the water discharge that must be managed in mine closure. The method of selecting daily maximum rainfall data was used to analyze the need for TSF facilities. Meanwhile, for mine closure TSF filling, scenarios for extreme climate conditions were made for the rainfall and potential evaporation parameters which were then analyzed to determine the water balance. Based on the daily data analysis, the maximum amount of water discharge that must be managed at the TSF was 1.511 m3/s. Meanwhile, for TSF charging, it was found that the fastest charging scenario took 31.8 months and for the longest charging it took 110.4 months. To determine the method of handling TSF during mine closure, the results of water balance analysis for several scenarios of climatic conditions resulted in the minimum thickness of the water column ranging from 6 - 8 m. Based on the analysis of several scenarios of climatic conditions, the mine closure method for handling TSF was water cover.
Potensi longsor berdasarkan analisis kinematik pada area low wall PT. Bukit Asam Tbk, site Tanjung Enim, Sumatera Selatan
Authors:   Teknik Geologi - Universitas Padjadjaran, Khodijah Siti , Monica Utari Sonya ,   Satuan Kerja Eksplorasi, PT. Bukit Asam Tbk, Ersyari Jodistriawan ,   Satuan Kerja Eksplorasi, PT. Bukit Asam Tbk, Khoirullah Nur ,   Fakultas Teknik Geologi, Universitas Padjadjaran, Sophian Raden Irvan ,   Fakultas Teknik Geologi, Universitas Padjadjaran
Published: August 2023

PT. Bukit Asam Tbk is an open-pit coal mining company in Muara Enim, Soutgh Sumatra. In open-pit mining activities, slope stability analysis is carried out to evaluate the mine in order to create a safe mining process. Several types of slope failure are associated with geological structures. This research was conducted to identify the type of landslides in the low wall area of Pit X PT. Bukit Asam Tbk and determine the slope stability factor based on discontinuity data using the scanline method at 8 observation points that represent the lithology of the low wall area. Methods used in this research is kinematic analysis, slope stability analysis on plane slide types and wedge. Based on the kinematic analysis, it was identified that the Pit X low wall area has the potential for plane and wedge type landslides with a relatively stable slopes.
Potensi deposit wolfram di Indonesia
Authors:   Politeknik Energi dan Pertambangan (PEP) Bandung, Hutabarat Imelda Eva Roturena , Suprapto Sabtanto Joko ,   Politeknik Energi dan Pertambangan (PEP) Bandung, Priatna  ,   Politeknik Energi dan Pertambangan (PEP) Bandung, Maryono  ,   Balai Besar Pengujian Mineral dan Batubara, Rudiyansah  ,   Politeknik Energi dan Pertambangan (PEP) Bandung
Published: August 2023

Bangka island is one of the islands in the Southeast Asian Tin Belt that makes Indonesia the largest tin (Sn) producer in the world. The carrier of wolframite is a by product mineral of the mineral tin (cassiterite). This study aims to study the presence and type of wolfram-as by product in the tin deposits on Bangka island. The research area was conducted on the eastern edge of Klabat Granite in Kepoh Village, Toboali District, South Bangka, at coordinates of 106o 31' 58" BT, 2o 56' 56 " LS. The result shows the presence of wolfram with grade of wolfram in veins reaching 8287 ppm. Wolfram was identified as an associated mineral in the tin mineralization system in Toboali along with rare earth metals (LTJ), molybdenum (Mo) and platinum (Pt). The results of analytical studies (UV, XRF, ICP OES, mineragraphy) on Toboali area minerals show the presence of wolfram in ores, concentrates, slag, and floor crusts. The identified wolfram minerals are wolframite (Fe.Mn)WO4 and scheelite (CaWO4) which are characterized through differences in properties such as color, fluorosence, magnetic, specific gravity and hardness values. The results obtained showed the presence of wolfram in Toboali area with wolfram content of 742 ppm in ore and also in the tin process, specifically in slag II of 1.02%. In addition, wolfram is indicated on the furnace floor and on the anode slime. Indonesia as one of the countries that owns wolfram minerals needs to continue the wolfram extraction process so that Indonesia receive the added value from its minerals.
Identifikasi Penggunaan Faktor Produksi pada Usahatani Sayuran Pola Tumpangsari di Kelompoktani Ganda Arum I Desa Gandatapa Kecamatan Sumbang Kabupaten Banyumas
Authors: Utami Pujiati , Wardhani Susi , Watemin Watemin , Purwidianti Wida
Published: August 2023

Penelitian ini dilakukan di Kelompoktani Ganda Arum I Desa Gandatapa Kecamatan Sumbang Kabupaten Banyumas. Tujuan dari penelitian ini adalah untuk mengetahui faktor produksi yang digunakan pada usahatani sayuran dengan pola tumpangsari. Kelompoktani Ganda Arum I merupakan salah satu kelompoktani yang ada di Desa Gandatapa dengan jumlah anggota aktif berjumlah 26 orang petani sayuran. Dari 26 orang petani tersebut, 8 orang petani melakukan kegiatan usahatani sayuran dengan pola tumpangsari. Kombinasi sayuran yang dibudidayakan dengan pola tumpangsari yaitu pakcoy-cabai besar dan pakcoy-cabai rawit. Faktor produksi yang digunakan pada usahatani tersebut yaitu penggunaan lahan pertanian milik petani dan sewa, penggunaan benih (pakcoy, cabai besar, cabai rawit), penggunaan pupuk (pupuk kandang, NPK, Phonska, Urea, KCL), penggunaan pestisida (Topdor, Sagribit, Demolis, Bercak Daun, Saporo, Emazo, Topsaid, dan lain-lain), penggunaan tenaga kerja (untuk pengolahan lahan, penyemaian, penanaman, pemupukan, pengendalian hama-penyakit, panen) dan penggunaan teknologi atau alat-alat pertanian (cangkul, arit, ember, tangki semprot, mulsa, gembor).
Inventarisasi Jenis Ikan Hias dan Ancaman Invasifnya yang Dipasarkan di Kabupaten Purbalingga
Authors: Nugraheni Lintang Cyan , Wiranata Bangkit , Nugrahaeni Lailatul Azmi , Pramono Taufik Budhi
Published: August 2023

Ikan invasif menjadi faktor utama penyebab kerentanan ikan endemik di Indonesia dan bahkan menyebabkan kepunahan. Ikan invansif sebagaian besar dimulai dari adanya introduksi ikan hias ke perairan umum, penting untuk melakukan pendataan dalam rangka pengendalian ikan invasif di Indonesia Penelitian ini bertujuan untuk mengidentifikasi jenis-jenis ikan hias yang dijual di Kabupaten Purbalingga dan tingkat ancaman invasifnya.pada penelitian ini pengambilan data dilakukan dengan menggunkan  Survei aktif secara purposive dilakukan dengan menggunakan kuesioner kepada toko penjual ikan hias di Kabupaten Purbalingga. Hasil penelitian menunjukkan bahwa ada 21 spesies ikan hias dari 20 yang diperdagangkan yang termasuk dalam kategori berbahaya atau berpotensi invasif. Para penjual ikan hias yang menjadi responden tidak mengetahui bahwa jenis-jenis ikan hias yang mereka jual termasuk invasif dan berpotensi invasif. Hal tersebut menimbulkan risiko tinggi dan bahaya yang serius bagi ekosistem air apa bila tidak di imbangi dengan pengetahuan ikan invasif. Pelepas liaran ikan invasif dapat mempengaruhi keseimbangan ekosistem, menurunkan keanekaragaman hayati, dan bahkan mengancam kelangsungan hidup spesies asli di perairan tersebut. Edukasi tentang bahaya ikan invasif perlu ditingkatkan, tidak hanya pada penjual tetapi juga pada pembeli agar mereka tidak melepaskan ikan tersebut ke perairan umum. Perlu adanya regulasi pemerintah yang ketat pada impor ikan hias dalam rangka mengendalikan ikan invasif di Indonesia, pendataan dan edukasi tentang bahayanya perlu ditingkatkan. Dengan meningkatkan kesadaran tentang bahaya ikan invasif, diharapkan masyarakat dapat mengurangi dampak negatifnya pada ekosistem perairan.Penelitian ini diharapkan dapat memberikan informasi penting bagi para penjual ikan hias dan juga otoritas yang terkait.
Pelatihan Budidaya Ikan Tepat Guna Bagi Anak Panti Asuhan Al Maaun PCM Wangon Banyumas
Authors: Rijal M Azharul , Pratama Ikhsan , Rachmawati Fitri , Haryogi Sukma , Muafa Adhia Rafif
Published: August 2023

Panti asuhan Al Maaun merupakan panti asuhan bagi remaja pada usia sekolah yang didirkan oleh Pimpinan Cabang Muhammadiyah Wangon. Panti asuhan memberikan layanan kepada masyrakat untuk meningkatkan keterampilan, rehabilitasi sosial, pelayanan sosial, perlindungan sosial dan perlindungan Pendidikan. Untuk meningkatkan ketrampilan, anak asuh panti harus diberikan keterampilan sehingga dapat bermafaat bagi mereka kelak. Teknologi budidaya yang tepat guna dapat meningkatkan keterampilan mereka kelak.Budidaya perikanan ramah lingkungan untuk produksi ikan secara efektif saat ini sangat dibutuhkan oleh masyarakat. Kegiatan pengabdian menggunakan metode partisipasi langsung dengan melakukan pembenihan ikan lele yang di dalamnya mencakup: pemberian materi budidaya dengan ceramah dilanjutkan dengan diskusi, penerapan budidaya dengan praktek langsung di tempat mitra, pembinaan dan pendampingan. Hasil dari kegiatan ini adalah peningkatan pemahaman anak asuh panti terhadap kegiatan budidaya dan adanya tambahan ilmu tentang keterampilan mengenai budidaya tepat guna dalam hal ini adalah budidaya ikan dalam ember. Pelatihan ini memiliki kesimpulan bahwa adanya peningkatan keterampilan dari anak asuh panti dan adanya peningkatan pengetahuan untuk kegiatan budidaya ikan. Saran untuk pelatihan ini adalah perlu ada nya peningkatan pemahaman anak asuh panti akan konsep panen dan konsep pemasaran hasil perikanan budidaya dan pelatihan kewirausahaan perikanan.
Pengembangan Usaha dari Sumber Daya Lokal Sektor Pertanian: Kasus Pada Produk Kopi Tersertifikasi Indikasi Geografis (IG)
Authors: Aziz Subkhi Abdul , Jayanthi Ria , Dinaseviani Anggini
Published: August 2023

Pengembangan usaha kopi yang merupakan hasil sumber daya lokal daerah di sektor pertanian menjadi fokus perhatian dalam rangka meningkatkan kesejahteraan petani dan masyarakat di sekitar wilayah produksi kopi. Sertifikasi Indikasi Geografis (IG) terhadap produk kopi daerah merupakan salah satu cara meningkatkan kesejahteraan petani melalui perlindungan hak atas produksi kopi yang mereka hasilkan.  Namun, hanya mengandalkan sertifikasi IG belum cukup bagi produsen kopi untuk meningkatkan kesejahteraan mereka. Penelitian ini bertujuan menganalisis tantangan dan mencari solusi yang diperlukan untuk meningkatkan potensi pengembangan usaha kopi tersertifikasi IG. Penelitian dilakukan menggunakan metode kualitatif dengan mengambil kasus pada produk-produk kopi yang tersertifikasi IG. Pengumpulan data dilakukan menggunakan teknik wawancara mendalam kepada perwakilan Masyarakat Perlindungan Indikasi Geografis (MPIG) yang berasal dari produk kopi, praktisi dan pelaku usaha produk IG. Selain itu dilakukan analisis data sekunder berupa dokumen terkait dengan kebijakan pemerintah dan pasar kopi. Hasil penelitian menunjukkan tantangan yang ditemui dalam pengembangan usaha kopi tersertifikasi IG, diantaranya adalah rendahnya pemahaman oleh produsen kopi dan konsumen lokal di Indonesia terhadap produk tersertifikasi IG, keterbatasan pengetahuan dan keterampilan, kurangnya infrastruktur pendukung seperti jalan dan akses internet, dan minimnya modal yang dimiliki oleh produsen kopi. Adapun solusi yang diperlukan untuk pengembagan usaha kopi tersertifikasi IG adalah dukungan pemerintah melalui perbaikan kebijakan, pembangunan infrastruktur pendukung, pelatihan dan pendampingan usaha, serta penyediaan modal usaha. Implikasi dari hasil penelitian ini adalah pentingnya mendukung pengembangan usaha kopi tersertifikasi IG yang merupakan hasil dari sumber daya lokal daerah untuk meningkatkan kesejahteraan masyarakat dan mempromosikan produk kopi berkualitas tinggi dari Indonesia.
Pengujian Kesehatan 4 Varietas Benih Sorgum (Sorghum bicolor L.)
Authors: Pamekas Tunjung , Bustamam Hendri , M Ferdinand Gherrisyah , Suharjo Usman Kris Joko , Susilo Edi
Published: August 2023

Kesehatan benih sorgum sangat mendukung terciptanya tanaman sorgum yang sehat dan berproduksi tinggi. Tujuan dari penelitian adalah untuk menguji kesehatan 4 varietas benih sorgum dengan metode seedling symptom test. Penelitian dilakukan pada bulan Oktober 2021 hingga Januari 2022 di Laboratorium Proteksi Tanaman, Fakultas Pertanian Universitas Bengkulu. Varietas sorgum yang dipakai adalah Super 1, Suri 3 Agritan, Suri 4 Agritan, dan Numbu yang berasal dari Balai Penelitian Tanaman Jagung dan Serealia (BALITJAS) Kabupaten Maros Sulawesi Selatan. Hasil penelitian menunjukkan bahwa varietas Suri 4 Agritan memiliki daya kecambah, tinggi tanaman, jumlah daun dan panjang akar yang paling rendah, namun varietas tersebut memiliki persentase bibit terinfeksi yang paling kecil. Keempat varietas benih sorgum terserang patogen terbawa benih dari golongan cendawan, berturut turut 4, 6, 5 dan 3 species cendawan  pada varietas Super 1, Suri 3 Agritan, Suri 4 Agritan, dan Numbu. Cendawan terbawa benih empat varietas sorgum adalah Aspergillus niger,  Mucor sp, Pyricularia sp,  Rhizopus sp,  Curvularia sp, dan 4 isolat cendawan yang belum teridentifikasi.
Uji Enam Racikan Nutrisi Hidroponik pada Tanaman Pakchoy (Brassica rapa L.) sebagai Pengganti Larutan AB-Mix
Authors: Suharjo Usman Kris Joko , Siburian Wenyta Lasputri , Marlin Marlin
Published: August 2023

Pakcoy (Brassica rapa L.) merupakan jenis sayur yang mempunyai kandugan nilai gizi tinggi. Salah satu cara meningkatkan produksinya memenfaatkan sistem hidroponik. Larutan AB-mix telah diketahui bahwa harga nya tidak ekonomis jika digunakan dalam skala besar. Penelitian ini bertujuan untuk mendapatkan formula nutrisi pengganti AB-Mix pada tanaman pakcoy (Brassica rapa L.) yang ditanam secara hidroponik. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan faktor tunggal yaitu AB-Mix 5 ml/l, NPK 1 gram/l + POC 5 ml/l, NPK 1 gram/l + POC 10 ml/l, NPK 1 gram/l + POC 15 ml/l, NPK 1,5 gram/l + POC 5 ml/l, NPK 1,5 gram/l + POC 10 ml/l, NPK 1,5 gram/l + POC 15 ml/l. Dari faktor tunggal didapat 7 kombinasi perlakuan dengan 3 ulangan, sehingga didapatkan 21 satuan percobaan. Data yang diperoleh dianalisis dengan analisis varians (ANAVA) pada taraf 5% dan diuji lanjut dengan uji Duncan Multiple Tange Test (DMRT). Hasil penelitian menunjukkan bahwa kombinasi pupuk NPK dan POC tidak dapat menggantikan pupuk AB-Mix.