bluuebunny/crossref_metadata_2025 huggingface dataset:
Religiões de Matriz Africana do Rio Grande do Sul: entre conflitos, projetos políticos e estratégias de legitimação
Authors: Leistner Rodrigo Marques
Published: January 2023

O trabalho promove uma reflexão sobre as estratégias de legitimação social empreendidas pela comunidade afro-umbandista no Rio Grande do Sul. A análise intenta construir um mapeamento das principais complexidades sobre as quais se deparam as religiões de matriz africana em suas realidades sociais contemporâneas. Deste ponto, parte-se para a observação dos aspectos estratégicos delineados pelos membros destas religiosidades, empreendidos como contrapartidas àquelas complexidades, os quais se encontram categorizados a partir de três enfoques. No primeiro, são abordados os aspectos morfológicos de legitimação, compreendidos na figura das principais instâncias atuantes junto aos propósitos reivindicativos, sobretudo os campos institucional e federativo. O segundo relaciona-se à detecção dos mecanismos de articulação política engendrados na busca pela legitimidade, que projetam o enquadramento das práticas observadas como ação coletiva. Por fim, são analisados os principais discursos tomados como referência fundamental nos projetos de legitimação alvitrados pelas comunidades religiosas estudadas.
A transnacionalização como fluxo religioso na fronteira e como campo social: Umbanda e Batuque na Argentina
Authors: Frigerio Alejandro
Published: January 2023

A transnacionalização como fluxo religioso na fronteira e como campo social: Umbanda e Batuque na Argentina
Comentário
Authors: Oro Ari Pedro
Published: January 2023

Comentário
Comentário
Authors: Guillot Maïa
Published: January 2023

Comentário
Comentário
Authors: De la Torre Renée
Published: January 2023

Comentário
Comentário
Authors: Gutiérrez Zúñiga Cristina
Published: January 2023

Comentário
Resposta aos Comentários
Authors: Frigerio Alejandro
Published: January 2023

Resposta aos Comentários
Resposta aos Comentários
Authors: Gutiérrez Zúñiga Cristina , De la Torre Renée
Published: January 2023

Resposta aos Comentários
Religiões e eleições 2012 em Porto Alegre
Authors: Oro Ari Pedro , Tavares de Carvalho Junior Erico
Published: January 2023

Religiões e eleições 2012 em Porto Alegre
Los procesos de relocalización de la santería en México: algunos ejemplos etnográficos
Authors: Huet Nahayeilli B. Juárez
Published: January 2023

Los procesos de relocalización de la santería en México: algunos ejemplos etnográficos
ORO, Ari Pedro e ANJOS, José Carlos Gomes dos. A Festa de Nossa Senhora dos Navegantes em Porto Alegre: sincretismo entre Maria e Iemanjá. Porto Alegre, SMC, 2009. 140 p.
Authors: Pieve Stella Mares Nunes
Published: January 2023

ORO, Ari Pedro e ANJOS, José Carlos Gomes dos. A Festa de Nossa Senhora dos Navegantes em Porto Alegre: sincretismo entre Maria e Iemanjá. Porto Alegre, SMC, 2009. 140 p.
A high-order predictor-corrector method for initial value problems with fractional derivative involving Mittag-Leffler kernel
Authors: ALJHANI SAMI , Noorani Mohd Salmi Md , Douaifia Redouane , Abdelmalek Salem
Published: January 2023

In this paper, we propose a numerical scheme of the predictor-corrector
type for solving nonlinear fractional initial value problems, the chosen
fractional derivative is called the Atangana-Baleanu derivative defined
in Caputo sense (ABC). This proposed method is based on Lagrangian
quadratic polynomials to approximate the nonlinearity implied in the
Volterra integral which is obtained by reducing the given fractional
differential equation via the properties of the ABC-fractional
derivative. Through this technique, we get corrector formula with high
accuracy which is implicit as well as predictor formula which is
explicit and has the same precision order as the corrective formula. On
the other hand, the so-called memory term is computed only once for both
prediction and correction phases, which indicates the low cost of the
proposed method. Also, the error bound of the proposed numerical scheme
is offered. Furthermore, numerical experiments are presented in order to
assess the accuracy of the new method on two differential equations.
Moreover, a case study is considered where the proposed
predictor-corrector scheme is used to obtained approximate solutions of
a coupled non-autonomous ABC-fractional differential system.
Einstein-Poincare synchronization and general transformations of coordinates
Authors: fordjarini ivan
Published: January 2023

Einstein-Poincare synchronization and deformation of space-time by gravity are sufficient for obtaining Lorentz transformation starting from Galileo transformation.
Characteristics analysis of heat and mass transport in catalytic reaction layers of thermally integrated reformers
Authors: Chen Junjie
Published: January 2023

In conventional fuel cells, a predominantly diffusive heat and mass
transport is established in the diffusion layer. However, conventional
fuel cells cannot ensure a heat and mass transport from the porous
diffusion layer to the catalytic reaction layer that is sufficiently
uniform for this purpose. The present study aims to provide a
methodology for determining the characteristics of heat and mass
transport in catalytic reaction layers. Numerical simulations are
performed using computational fluid dynamics to better understand the
characteristics of heat and mass transport in catalytic reaction layers
of thermally integrated reformers. The present study aims to provide a
fundamental understanding of the heat and mass transport in catalytic
reaction layers of thermally integrated reformers. Particular emphasis
is placed upon the dimensionless quantities involved in thermally
integrated reformer with different catalytic reaction layer structures.
The results indicate that a vapor-liquid equilibrium exists when the
escape tendency of the specie from liquid to a vapor phase is exactly
balanced with the escape phase at the same temperature and pressure. It
may be beneficial to utilize the thermodynamic work potential provided
by the transfer of heat to drive the separation process in the desired
direction. If a chamber partition operates below its maximum heat
transfer flux capability, this flux often can be increased by augmenting
adjacent latent energy transfer which transfers through the partition as
sensible energy. The external balance establishes the net enthalpy
offset and therefore the temperature difference and the net amount of
liquid that may be evaporated or condensed. A pure diffusive heat and
mass transport would lead to an uneven reaction density or current
density in the catalytic reaction layer, on account of a corresponding
lack of uniformity in the heat and mass transport in the same catalytic
reaction layer. A high pressure-drop in the thermally integrated
reformer is to be avoided, since a high-pressure drop is associated with
correspondingly high-power losses, which in turn results in a low
overall efficiency. The conduit surface may vary along the general
direction of flow to provide the zones either intermittently or
preferably continuously as with an undulating membrane surface. When
tubular membranes are employed, which membranes are preferably circular
in cross section, the zones are preferably provided by circumferential
furrowing.

Keywords: Integrated reformers; Temperature differences;
Membrane surfaces; Dimensionless quantities; Heat transport; Mass
transport
Lesion Size Index-guided high-power ablation for atrial fibrillation: opening the therapeutic window
Authors: Hanley Alan
Published: January 2023

Radiofrequency (RF) ablation for the treatment of atrial fibrillation
has gained widespread acceptance since the concept was introduced by
Haissaguerre et al a quarter of a century ago. High power short duration
ablation has been widely adopted in the management of atrial
fibrillation. Evidence for combining lesion size index and high power
short duration ablation is lacking. In this issue of the journal, Cai et
al evaluated the combination of HPSD with LSI with a focus on long-term
efficacy.
Coronary arterial injury during right ventricular outflow tract ablation: Know your neighbors
Authors: Sridharan Aadhavi , Hutchinson Mathew
Published: January 2023

Left anterior descending (LAD) coronary arterial injury is an
underappreciated and rare consequence of ablation in the right
ventricular outflow tract (RVOT). The authors present five cases of
acute or subacute LAD injury after RVOT ablation. Most patients had
fairly extensive ablation and two had coincident cardiac perforation.
The patients reported also had a strikingly similar ECG morphology of
their spontaneous ventricular arrhythmias. The authors’ report serves an
important cautionary tale regarding ablation of intramural septal VAs.
Short or Long-Coupled Idiopathic Ventricular Fibrillation: Does the Coupling Interval Really Matter?
Authors: Belhassen Bernard , Tovia-Brodie Oholi
Published: January 2023

I am not sure this editorial comment deserves an abstract. Plesae
advise.
Measurement of vessel shape for estimating viscoelastic properties of the radial artery under ultrasound probe pressure
Authors: Ishikawa Ryo , MORI Shohei , ARAKAWA Mototaka , OHBA Shigeo , KOBAYASHI Kazuto , KANAI Hiroshi
Published: January 2023

Here, the blood vessel shape was accurately measured to evaluate the
viscoelastic properties of the radial artery. For a robust measurement,
the shape parameters of the elliptical blood vessel were determined by
integrating brightness over the entire vessel instead of using the
brightness gradient at the vessel boundary. The usefulness of the
proposed method was demonstrated via simulations and in vivo
experiments. The obtained results exhibited considerable potential for
estimating the viscoelastic properties of elliptically deformed blood
vessels.
Evolution and concept of environmental flows (e–flows): Meta–analysis
Authors: Abera Gizaw , Degefa Sileshi , Furi Wakgari , Legesse Gudina
Published: January 2023

The idea of e-flows emerged as a result of the efforts to lessen the
effects of river flow alterations. The role of e-flows in ecosystem
protection and water resources management isn’t yet fully understood and
practiced. This review summarizes the historical evolution of the
concept and recaps the assessment methods; analyze impacts of river flow
alterations, and identifying gaps in the focus of e-flows researches. A
total of 303 articles published since 2010 were collected and assessed.
Most of the publications are focused on describing the effects and
management of river flow alterations. According to the findings of this
meta-analysis, less attention is given for basin scale, social, policy
aspects of e-flows. Moreover, the role, importance, and influence of
groundwater in the e-flows is given minor attention.
A Sub-nW 100 ppm/°C Self-Biased Voltage Reference Circuit for IOT Applications.
Authors: KAUR TARANVEER , kumar Arvind
Published: January 2023

A sub-nW, self-biased voltage reference circuit is developed to provide
bias signals for use in Internet-of-Things (IOT) applications, taking
use of the sub-threshold region operation MOSFETs. Circuit is evaluated
by simulation with 180nm SCL’s CMOS device parameters and 1.8 V voltage
supply and from temperature -40˚C to 125˚C. Simulation shows that a
temperature sensitivity of designed voltage reference is less than 100
ppm/°C. The size of the proposed design without IO pads is 30 µm × 30 µm
and consumes power less than 50 nW.
Improving the electrical performance of Lithium-ion battery using SilicaCarbon anode through technique
Authors: Le Loan Phung , Nguyen Xuan My , Le Kha , Phung Quan , Truong Duc , Nguyen Hoang , Nguyen Quynh , Tran Man
Published: January 2023

Nowadays, a hybrid composite SiO2/C has been paid attention to improving
battery performance in Li-ion batteries (LIBs) as the anode. However,
this material unexpectedly suffers from initial active lithium loss
caused by the solid electrolyte interface (SEI) formation leading to low
initial Coulombic efficiency and significantly reducing the initial
capacity. In order to solve these issues, pre-lithiation has been
considered an effective approach to limit active lithium loss and
increase cycling performance. This work focuses on the two most common
techniques, including the direct contact method (CM) and the
electrochemical method in half-cell (EM). After the pre-lithiation
process, the anodes would be evaluated in full-cell with
LiNi0.6Mn0.2Co0.2O2 (NMC622) cathode. According to electrochemical
properties evaluations, pre-lithiation could enhance discharged capacity
and initial coulombic efficiency. Without the pre-lithiation method, the
discharged capacity in full-cell only witnessed 66.9 mAh.g-1, while CM
and EM methods illustrated a better battery performance. In detail, EM
exhibited a higher discharged capacity and initial coulombic efficiency
(137.06 mAh.g-1 and 99.08%, respectively) compared to CM (99.08 mAh.g-1
and 93.23%) method. Besides, the capacity retention using EM achieved
71.4% and the discharged capacity illustrated 97.87 mAh.g-1 after 100
cycles, which is better than using CM, which only showed 71.40 mAh.g-1.
Salidroside restores glucocorticoid sensitivity in chronic obstructive pulmonary disease by activating Nrf2/HO-1 pathway
Authors: Huang Rong , Deng Daishuo , Xie Tao , Zheng Yulong , Fu Yufeng , Wan Yufeng
Published: January 2023

Corticosteroid resistance is the essential obstacle for effective
treatment of chronic obstructive pulmonary disease (COPD). Oxidative
stress and persistent chronic inflammation caused by cigarette smoke are
likely to induce this corticosteroid insensitivity. Salidroside (Sal) is
a main ingredient of traditional Chinese medicine rhodiola, which has
the effects of anti-oxidation and anti-inflammatory. We aimed to
investigate the role of Sal in the corticosteroid sensitivity of COPD.
Collecting peripheral blood mononuclear cells (PBMC) from healthy
volunteers (HV) and patients with COPD, and human monocytic U937 cells
stimulated by normal culture and cigarette smoke extract (CSE),
corticosteroid sensitivity was determined as the dexamethasone
concentration causing 30% inhibition of tumor necrosis factor alpha
(TNF-α)-induced IL-8 production (Dex-IC ) in these
cells. Compared with PBMC from HV and normally cultured U937, in PBMC
from COPD patients and U937 cells stimulated by CSE, the inhibitory
effect of dexamethasone on IL-8 was weakened and the levels of nuclear
factor erythroid 2‐related factor 2 (Nrf2) and histone deacetylase‐2
(HDAC2) was reduced. In conclusion, Sal restored dexamethasone
inhibition of IL‐8 production, accompanied by raising the expression of
Nrf2 and HDAC2 levels. Sal may upregulate HDAC2 expression by activating
the Nrf2/HO-1 signaling pathway, and then restore corticosteroid
sensitivity in COPD.
A taxonomic revision of Commelina bicolor D. Q. Wang & M. E. Cheng (Commelinineae)
Authors: Huang Ruizhou , Xu Han
Published: January 2023

Commelina bicolor D. Q. Wang & M. E. Cheng is a late homonym of
Commelina bicolor Poepp. ex Kunth, so it is renamed as
Commelina anhuiensis R. Z. Huang & Han Xu.
Rancang Bangun Sistem Simulasi Asesmen Internal Berbasis Web Menggunakan Instrumen Akreditasi Program Studi (IAPS 4.0)
Authors: Duwi Antara Yogi , Gunadi Gede Aris , Candiasa I Made
Published: January 2023

Penelitian ini bertujuan mengembangkan sebuah sistem simulasi berbasis web untuk melakukan asesmen internal pada program studi di Universitas Warmadewa yang akan mengajukan akreditasi menggunakan Instrumen Akreditasi Program Studi versi 4.0 (IAPS 4.0). Simulasi dilakukan sebelum program studi mengunggah isian instrumen akreditasi yang berupa Laporan Evaluasi Diri (LED), Laporan Kinerja Program Studi (LKPS), dan dokumen-dokumen terkait akreditasi lainnya ke SAPTO BAN-PT. Hasil dari simulasi yang dilakukan berupa skor dan peringkat akreditasi serta rekomendasi untuk penyempurnaan isian instrumen akreditasi. Penelitian ini menggunakan metode extreme programming untuk merancang dan membangun sistem simulasi serta menggunakan metode black-box testing dan instrumen respon pengguna untuk melakukan pengujian efektivitas sistem. Hasil implementasi menggunakan metode extreme programming telah dilakukan dengan menghasilkan rancangan sistem, desain sistem, tampilan sistem, serta pengujian sistem. Dari hasil penelitian yang dilakukan, sistem simulasi asesmen internal mampu membantu program studi yang akan mengajukan akreditasi untuk mempersiapkan LED, LKPS, maupun dokumen terkait akreditasi sebelum mengunggahnya melalui SAPTO BAN-PT serta mengetahui perkiraan skor yang akan didapat melalui asesmen internal. Sistem simulasi juga dapat berjalan sesuai dengan yang diharapkan dilihat dari hasil hasil uji yang dilakukan terhadap sistem dan 3 user yang terlibat yaitu admin, program studi, dan asesor internal.
Analisis Perancangan E-Business B2C (Business to Consumer) Upaya Digitalisasi Pengembangan UMKM (Studi Kasus : Kabupaten Pesawaran, Indonesia)
Authors: Iis Ariska Nurhasanah  , Muhamad  Brilliant  , Kustia Reni  , Agus Mulyanto
Published: January 2023

Survey yang dilakukan oleh badan pusat statistik pada 10-26 Juli 2021 menyajikan data penurunan pendapatan yang dialami 80% pelaku usaha mikro kecil dan menengah (UMKM) Secara tidak langsung penurunan pendapatan ini juga terjadi di UMKM Kabupaten Pesawaran Selain permasalahan penurunan pendapatan di masa pandemi, Permasalahan yang terjadi pada Mayoritas pelaku UMKM di kabupaten Pesawaran adalah rendahnya tingkat pemanfaatan teknologi informasi dalam menunjang proses bisnis UMKM, sehingga mayoritas pelaku UMKM di kabupaten Pesawaran melakukan pemasaran produknya secara konvensional, hal ini menjadi salah satu factor yang dapat mengakibatkan UMKM di Kabupaten Pesawaran sulit untuk bangkit di masa pandemi. ­­Penelitian ini bertujuan untuk membuat rancang bangun Landing Page berbasis Content Management System yang sesuai dengan UMKM, dikarenakan belum adanya Landing Page berbasis Content Management System yang di desain secara spesifik untuk UMKM khususnya di Kabupaten Pesawaran yang sampai saat ini penulis belum menemukannya, penambahan fitur cashless pada CMS ini akan memberikan kemudahan dalam transaksi non tunai. Penelitian ini menggunakan metode RnD (Research and Development) dengan Tahapan dalam penelitian ADDIE sebagai berikut (1) Analisis (2) Desain (3) Pengembangan, (4) Implementasi (5) Evaluasi. Hasil dari penelitian ini adalah rancangan aplikasi yang diberi nama UMKM jejama yang dalam bahasa lampung memiliki makna bersama, dan berfungsi sebagai media penjualan UMKM ke pelanggan/pembeli. Hasil pengujian menunjukan fungsi dari menu yang terdapat di aplikasi dapat berjalan dengan baik dan sesuai dengan spesifikasi kebutuhan UMKM.
Sentiment Analysis of Online Lectures using K-Nearest Neighbors based on Feature Selection
Authors: Junadhi  , Agustin  , Rifqi Mi’rajul , Anam M. Khairul
Published: January 2023

Online lecture is a distance learning system that utilizes information technology in its implementation. Although it has been agreed, this lecture system has caused controversy. Not infrequently online lectures are considered to bring a variety of new obstacles in lectures, and not a few also consider that online lectures are the most appropriate solution to continue to run lecture activities in the midst of alarming pandemic conditions. In response to this policy, many people expressed various kinds of opinions and views on the implementation of online lectures which are generally stated on social media, one of which is through Twitter. Sentiment analysis is a branch of the science of machine learning that is carried out to obtain useful information or new knowledge by extracting, understanding, and processing text data automatically. Several methods are widely used by researchers to classify sentiment analysis datasets including K-Nearest Neighbor (K-NN). K-NN will be adapted to classify online lecture datasets because K-NN can produce good accuracy on a large number of data. The presence of feature selection also helps machine learning in improving its performance. The purpose of this study was to determine student sentiment toward online lectures and to determine the level of accuracy of the combination of K-NN with various feature selections. Based on 780 tweets data, a classification of 394 positive sentiments, 320 negative sentiments, and 39 neutral sentiments was obtained. So, the results of student opinions are on POSITIVE sentiments.  The accuracy result of the K-NN Algorithm was 56% and the accuracy of the K-NN Algorithm + Forward Selection was 51%, the accuracy of the KNN Algorithm + Adabost was 54%, and the accuracy of the KNN Algorithm + Genetic Algorithm was 55%.
Self-Regulated Learning Strategy in Conducting Remote Lecturing During Covid-19 Pandemic
Authors: Adam Nurul Suciana , Kartowagiran Badrun , Yansa Hajra , Marlina Marlina , Amiruddin Muhammad
Published: January 2023

Since the outbreak of the COVID-19 virus hit Indonesia, the Work from Home Policy of working, studying, and worshiping at home has been implemented to reduce community activities outside the home. To maintain students’ academic performance in remote lecturing during the COVID-19 Pandemic, it needed a strategy to plan, monitor, and evaluate academic progress. The study aimed to investigate the Self-Regulated Learning (SRL) strategy in remote lecturing. The research design used was a survey method with a quantitative approach. The subjects of this study numbered 209 higher university students by using the convenience sampling technique. The data collection technique used was the SRL scale developed by Zimmerman. The scale was inputted into Google Form, then distributed online. The Aiken index validity and reliability using Cronbach Alpha showed good validity and high reliability. The data analysis techniques were descriptive statistics, MANOVA and ANOVA. The findings showed that the Self-Control indicator was the most dominant factor among students. Besides, there was no significant difference simultaneously between men and women and inconclusive results related to gender in SRL in the distance lecturing implementation.
Teachers Intention to Use E-Learning During The Covid-19 Pandemic: Age and Gender Perspective
Authors: Kardoyo  , Kusumantoro  , Nurkhin Ahmad , Mukhibad Hasan
Published: January 2023

During the Covid-19 pandemic, learning was carried out online using an e-learning system. With this system, all students and teachers can even carry out learning even though they are at home. This study aims to analyze teachers' intentions in using e-learning during the covid-19 pandemic. This study uses a modified model of TAM (Technology Acceptance Model). This study uses 7 Likert scales in measuring all indicators. The data analysis method uses Structured Equation Models (SEM). The results of the study show that perceived ease of use (USE) has a significant effect on teacher intentions in utilizing e-learning, while perceived ease of use (EASE) has no significant effect on the use of e-learning. Gender was not proven to be a moderating variable on the relationship between USE and EASE with teachers' intentions to use e-learning. Teacher age strengthens the USE relationship to e-learning use. However, teacher age weakens the relationship between EASE and e-learning use. Male and female teachers have the same understanding regarding e-learning. In addition, teachers with a more mature age see e-learning as a system that provides benefits for them to carry out their duties as teachers. They also focus more on improving performance. On the other hand, teachers with more mature ages are less concerned about the ease of using e-learning.
The Effect of Reciprocal Teaching Learning Model and Self-Concept on Reading Comprehension Ability
Authors: Tantowie Tanto Aljauharie , Sunendar Dadang , Rahman  , Hartati Tatat
Published: January 2023

The reading ability of students in the field is still very worrying. This is reinforced by the low ability of students to understand material or questions that require higher-order thinking skills. The low reading comprehension ability can be seen from the low literacy ability of students based on PISA rankings. This study aims to analyze the effectiveness of the reciprocal teaching model on students' reading comprehension skills in terms of students' self-concept levels. The approach used in this research is quantitative with a quasi-experimental method. The participants of this study were 100 elementary school students who were divided into two groups of 50 students each in the experimental and control groups. Data was collected through reading comprehension tests and observations. Data analysis was performed by two-way ANOVA. The results showed that the Reciprocal Teaching model gave a more significant contribution to students' reading comprehension skills compared to conventional methods, especially for students who had low self-concept. Based on the findings above, it is concluded that the Reciprocal Teaching learning model has an effect on students' reading comprehension skills. Both reciprocal and conventional learning models have the same effect on students who have high self-concept. The implication of this research is that teachers must choose a learning model that can accommodate all students, not only students with high academic abilities, but also students with low academic abilities.
Physical and Mechanical Properties of Oriented Flattened Bamboo Boards from Ater (Gigantochloa atter) and Betung (Dendrocalamus asper) Bamboos
Authors: Putri Alfira Ramadhani , Alam Nur , Adzkia Ulfa , Amin Yusup , Darmawan I Wayan , Karlinasari Lina
Published: January 2023

Bamboo-based composite has been used widely for building components and furniture. Oriented flattened bamboo board (OFBB) is a composite board consisting of oriented structure sheets of flattening bamboo. This study aimed to analyze the physical and mechanical properties of the OFBB from ater (Gigantochloa atter) and betung (Dendrocalamus asper) bamboo. A three-layer flattened bamboo board using the isocyanate resin with a density target of 0.6 g/cm3 was applied. The characteristics of raw bamboo, the contact angle of OFBB, and board properties of density, moisture content, thickness swelling, and water absorption, as well as bending, internal bonding (IB), and compressive strength properties were determined to evaluate the quality of the OFBB.  Based on the findings, the thin wall thickness of ater bamboo enhanced the physical and mechanical properties of the OFBB compared to the higher wall thickness of betung bamboo.  Therefore, further development in bamboo composite products with those anatomical properties seems promising. The dimensional stability and bending properties of OFBB from ater bamboo met the quality of first grade of the Canadian Standard for OSB and waferboard, except for the IB strength.
Keywords: Bamboo wall thickness, contact angle, Dendrocalamus asper, Gigantochloa atter, oriented flattened bamboo board
Plant Diversity and Carbon Stocks in Urban Green Open Space (Case Study in PT. Gajah Tunggal Tbk., Tangerang, Banten)
Authors: Heriyanto Nur Muhammad , Samsoedin Ismayadi , Rochmayanto Yanto
Published: January 2023

Efforts to mitigate climate change, namely reducing greenhouse gas emissions, can be carried out, among others, by utilizing trees in urban areas, which have an important role as carbon sinks. In order to determine the potential of tree species in absorbing carbon, research was conducted in the green open space area of PT. Gajah Tunggal Tbk. in Tangerang, Banten Province. This study aimed to determine the potential of tree species in absorbing carbon by measuring the diameter and height of 150 plant species of 46 families, consisting of 8,636 tree stands and 5,254 bamboo stems. The average age of the tree is over 7 years. The results showed that the potential biomass, carbon content, and CO2 absorption of plants with a diameter of 2 cm were dominated by Eucalyptus deglupta, Roystonea regia, and Pterocarpus indicus. The total biomass, carbon content, and CO2 absorption of tree and bamboo species were 880.82 tons or 413.98 tons C, equivalent to 1,519.33 t.CO2-eq. This company’s CO2 emissions in 2020 amounted to 406,073.72 t.CO2-eq.
Keywords: Carbon stock, greenhouse gas, green open space, plant diversity
Mining Sludge Utilization as Medium Growth for Revegetation Plants through Seed Germination Test
Authors: Pratama Muhamad Ramdhanny , Mansur Irdika , Rusdiana Omo
Published: January 2023

The limited topsoil stock is one of the post-mining reclamation problems that will directly impact the company’s business processes. One solution that can be considered to reduce production costs is the utilization of unused materials around the mine. The settling pond sludge contains nutrients and can be used as a growing medium for plants to replace topsoil. This study examined the potential utilization of settling pond sludge through germination and sprout viability tests. This study used a completely randomized design with four composting treatments, namely 0%, 25%, 50%, and 75%. The number of replications was ten times and applied to several species of revegetation plants, namely Acacia mangium, Senna siamea, Falcataria moluccana, and Albizia saman, so there were 160 experimental units in total. The results showed that the settling pond sludge has organic matter reserves and low nitrogen content but is rich in P and element reserves of P and K. The physical texture of settling pond sludge was still suitable as a medium for plant growth. The addition of compost as a mixture of settling pond media had a significant effect on germination and germination viability but had no significant effect on the parameters of the germination rate. The increase in compost composition in the settling pond media mixture positively affected germination and germination survival. Based on this research, it is known that settling pond sludge can be used as a medium for growing revegetation plants. In general, the media with the addition of 50% and 75% compost gave the best germination response and viability.
Keywords: Compost, post-mining reclamation, revegetation, seed germination test, settling pond sludge
Effect of Landform on the Distribution of Metroxylon sagu Habitat in Yapen Islands, Papua Province, Indonesia
Authors: Dimara Petrus Abraham , Auri Amilda
Published: January 2023

Sago palm (Metroxylon sagu) plays a vital role in the Papuan indigenous community’s social, economic, and cultural life. It is a source of staple food, household income, and embedded cultural values. This research aimed to determine the extent of sago palm habitat spread using spatial data. The classification method and multispectral imaging were used by employing satellite imagery (Landsat 8 and Quick Bird) and field surveys. The sago forest coverage in Yapen islands was 87.73%, located between 9–50 masl, covering 9,456.26 ha. The results revealed that 43.53% of the habitat lies in the inclination of 2–8% (extreme gentle slope), covering 4,692.45 ha. Sago forest was found in a gleysol soil type with precipitation of 3,000-3,100 mm. The sago forest distances of 0–250 m and 251–500 m to the coastline showed that the habitat covers an area of 153.87 ha and 368.19 ha. The preferable area in this category is Raimbawi Subdistrict, followed by Kosiwo, and the less suitable area, or the marginal land, is in Windesi Subdistrict.
Keywords: Alternative crop, Metroxylon sagu, sago, spatial distribution, Yapen Islands
Production and Characterization of Natural Dyes for Ecoprinting Leather from the Extracts of Three Mangrove Species
Authors: Pancapalaga Wehandaka , Ishartati Erny , Ambarwati Titik
Published: January 2023

This study aimed to determine the potential of Rhizophora mucronata, Maclura cochinchinensis, and Ceriops tagal extracts as a dye for ecoprinting leather. The parameters evaluated were color values (L*, a*, and b*), Fourier-Transform Infrared Spectroscopy (FTIR) analysis, and ecoprinting leather color fastness. The results showed that R. mucronata extract produced a brownish-red color with the L*, a*, and b* values of 17.53, 36.27, and 30.19, respectively. M. cochinchinensis extract produced a brownish-yellow color with the L*, a*, and b* values of 34.59, 31.87, and 58.61, while C. tagal extract produced a reddish-brown color with the L*, a*, and b* values of 32.36, 36.80, and 34.06. The results of FTIR analysis of the three mangrove extracts identified several functional groups such as O-H stretch, C=O stretch, C=C aromatic, C-O-C stretch, and C-N stretch. The color fastness of wet rubbing showed that R. mucronata and C. tagal extracts have a value of 4, indicating a good category. In contrast, M. cochinchinensis extract has a value of 5, with an excellent tegory. It showed that the extracts of R. mucronata, M. cochinchinensis, and C. tagal could be used for leather coloring with the ecoprinting method.
Keywords: Ceriops tagal, ecoprinting leather, Maclura cochinchinensis, natural dyes, Rhizophora mucronata
Physical and Mechanical Properties of Cross-Laminated Timber Made of a Combination of Mangium-Puspa Wood and Polyurethane Adhesive
Authors: Hariz Tengku Muhammad Renzy , Hadi Yusuf Sudo , Lubis Muhammad Adly Rahandi , Maulana Muhammad Iqbal , Sari Rita Kartika , Hidayat Wahyu
Published: January 2023

This study aimed to evaluate the physical and mechanical properties of cross-laminated timber (CLT) characteristics from mangium (Acacia mangium) and puspa (Schima wallichii) woods and their combination using polyurethane (PU 1.2) adhesives. The manufacture of CLT began with basic adhesive characterization and thermo-mechanical analysis. Wood material’s physical and chemical properties were also tested with its response to the PU 1.2 wettability. The CLT (100 ´ 30 ´ 3.60) cm3 was manufactured with 160 g/m2 glue spread at a pressure of 0.80 MPa for 200 minutes. The CLT panels were characterized refers to the JAS 3079  standard. The results show that PU 1.2 had a gelatination time of 182.1 minutes at 25°C, was able to form urethane groups, and experienced an increase in storage modulus at 35°C. Mangium and puspa woods have different physical and chemical properties, but they interact similarly with PU 1.2 wettability. Puspa CLT panel has a higher density than mangium but lower dimensional stability. The bending mechanical properties of hybrid puspa-mangium-puspa CLT were able to match puspa CLT and have one sample of shear strength that met the JAS 3079 standard in both grain directions. Therefore, hybrid puspa-mangium-puspa CLT has the potential to be developed to improve its dimensional stability and mechanical properties.
Keywords: Acacia mangium, cross-laminated timber, layer combination, polyurethane adhesive, Schima wallichii
The Impact of the COVID-19 Pandemic on Primary Cleft Surgery
Authors: Budihardja Andi Setiawan , Lius Adrielle Alpha
Published: January 2023

Objective: The main objective of this study is to evaluate the early effects of the COVID-19 pandemic on primary cleft lip surgeries in a single high-volume center.
Material and Methods: A retrospective comparative cohort study of patients undergoing primary cleft lip and primary cleft palate repair before and during the pandemic was conducted. A sum of 194 patients, comprising of 100 patients taken pre-pandemic, and 94 patients who underwent primary cleft repairs during the pandemic were used in this study. The demographic factor and age groups were compared.
Results: Mean age of primary cleft repair was 6.1 ± 2.9 pre-pandemic (n = 66) and 6.9 ± 4.9 (n = 69) in the pandemic cohort (p = 0.229). The mean age at primary cleft palate repair was 22.3 ± 13.5 (n = 34) pre-pandemic and 23.6 ± 10.7 (n = 25) in the pandemic cohort (p = 0.7).
Conclusion: Primary cleft surgery was not significantly affected by the COVID-19 pandemic. Further studies are required to evaluate the psychological effects of the pandemic to patients and their families.
Simulation-based Reliability Evaluation of Maintenance the Efficiency of A Repairable System
Authors: Krit Makram
Published: January 2023

The aim of this paper is to study the asymptotic behavior of the Arithmetic Reduction of Intensity (ARI) and Arithmetic Reduction of Age (ARA) models as two imperfect maintenance models. These models have been proposed by Doyen & Gaudoin (2011), the failure process with bathtub failure intensity. The maintenance effect is characterized by the change induced by the failure intensity before and after a failure during the degradation period. To simplify the study, the asymptotic properties of the failure process are derived. Then, the asymptotic normality of several maintenance efficiency estimators can be proved in the case where the failure process without maintenance is known. Practically, the coverage rate of the asymptotic confidence intervals issued from those estimators is studied.
ESG (Environmental, Social, and Governance) Implementation to Strengthen Business Sustainability Pt. Migas–North Field
Authors: Sibarani Samuel
Published: January 2023

ESG implementation is one of factors in establishing a sustainable business. Businesses in Indonesia also need to implement ESG to achieve net zero emissions by 2026. This study describes the implementation of ESG (Environmental, Social, and Governance) to strengthen PT. Migas–North Field. This qualitative study uses an interview technique with 5 employees of PT Migas. This study focuses on the implementation of 30 indicators from ESG Reporting Guide 2.0. The findings show, in the environmental aspect, the indicators that have been practiced in the company consist of GhG emission, emission intensity, energy usage, energy intensity, energy mix, water usage, and environmental operation. While the indicator has not been practiced is climate oversight/board, climate oversight management, and climate risk mitigation. In the social aspect, the indicators that have been implemented by the company are the CEO Pay Ratio, Gender Pay Ratio, Temporary Worker Ratio, Non-discrimination, Injury Rate, Child & Forced Labor, Global Health & Safety, and Human Rights. While the indicators of Gender Diversity and Employee Turnover have not been implemented. In the governance aspect, the indicators that have been implemented by the company are Board Independence, Collective Bargaining, Supplier Code of Conduct, Ethic & Anti-Corruption, and Data Privacy. While the indicators that have not been implemented are Board Diversity, ESG Reporting, Disclosure Practice, Incentivized Pay, and External Assurance. All of indicators above actually have an urgency to be implemented in order to create business sustainability.
Semi-open Herniorrhaphy Reduces Postoperative Complications of Umbilical Hernia in Male Calves
Authors: Sutradhar Bibek Chandra , Biswas Sreekanta , Bristi Sabiha Zarin Tasnim , Dey Tuli , Paul Thomby , Sarker Debashish , Hossain Muhammad Farhad
Published: January 2023

Umbilical hernia is the most common birth defect in calves, especially in the male. The aim of this study was to justify the semi-open herniorrhaphy compared with other techniques for the treatment of umbilical hernia in male calves. This research included 54 clinical cases of reducible umbilical hernia (11 indigenous, 43 crossbred calves). The ages of 54 calves ranged from less than 1 month to 6 months. Sizes of the hernial ring ranged from 2-6 cm. Out of the 54 hernias, 20 were treated with open herniorrhaphy, 16 with closed herniorrhaphy, and 18 with semi-open herniorrhaphy. Among the three correction methods of umbilical hernia in calves, the semi-open herniorrhaphy was the best with a 96.65% recovery rate without any complication, followed by the closed method (93.3%) and open method (66.67%) of herniorrhaphy. The average recovery period was also the best in semi-open herniorrhaphy (10.27 days), followed by the open method (12.44 days) and the close method (21.01 days). These findings suggest that semi-open herniorrhaphy is the best method to correct umbilical hernia in calves, especially in the male.
Field Study of Infectious Bursal Disease in A Laying Poultry Farm at Khartoum State, Sudan
Authors: Osman Hind E. , Hallane Guled Abdi Ahmed , Edris Marwa Mohamed Badawi Sheikh , Nor Aldaim Mohamed Sadia , Ahmed Rawnag Hassan Alshareef , Osman Omar Mutasim Ali
Published: January 2023

The aim of this study is to investigate field Infectious bursal disease outbreak in a laying poultry farm. The disease is an economically important worldwide disease in poultry production sector.  Serological tests (Elisa, AGID, and immunochromatography), morbidity rate, mortality rate and post-mortem changes were studied.  The results showed 100% morbidity, 28% mortality, positive AGID test and immunochromatography test and the Elisa test which was done at the end of the outbreak. Post-mortem revealed haemorrhages in the enlarged and edematous burasa, atrophy of the bursa, haemorrhage in skin, breast, thigh muscles and proventriculus as the most frequently detected lesions. The kidneys were affected showing enlargement, nut meg appearance and pale color Deposition of urates in ureters was also obvious. In conclusion IBD is a serious problem causing a considerable socioeconomic loss for the farmer, consumers and the country as a whole. The disease can be diagnosed using serological tests. IBD needs extensive effort in extension to raise the awareness of the sector about the disease diagnosis, prevention and control.
Evaluation of Phytogenic Feed Additive on Egg Production, Egg Quality and Feed Intake in Layer Chicken
Authors: Suresh Subramaniyam , D'Souza Prashanth , Marimuthu Saravanakumar
Published: January 2023

The commercial layer production in chicken farms has usually been exposed to wide range of stress stimulants, which adversely affect the feed intake and body weight that in-turn depress the egg production and quality. Hence, it’s a major area of concern to reduce the stress and increase the production benefiting the farmer and health of the bird. The present study was designed to evaluate the impact of phytogenic feed additive (PGC) on egg production, egg quality and feed intake in layer chicken. A total of 320 birds of age 65 weeks of BV300 layers were randomly assigned to 2 groups (Control and PGC groups) with 10 replicates comprising 16 birds each (n = 160). The control group was provided with standard commercial feed as recommended by NRC specifications. In PGC group PhytoceeTM was supplemented at 200 g/ton with standard commercial feed. The study period was 6 weeks (65 weeks to 70 weeks) and data was collected on 7 days interval. The data on egg production, feed intake and egg quality parameters (egg weight and shell parameters) were collected during the study. The group fed with PGC had showed numerical improvement in egg production and decreased egg defects during the study period when compared to control group. The feed intake was not much altered in both the groups. The egg density, egg strength, shell weight, shell thickness and shell percentage were numerically improved in PGC supplemented group when compared with control. The supplementation of PGC had considerably improved the egg quality and production parameters in layer birds by helping them in reducing the harmful effects of stress.
Curative Effects of Spirulina (Spirulina platensis) Aqueous Extract on Reproductive Parameters and Oxidative Stress Markers in Female Guinea Pig (Cavia porcellus) Exposed to Lead
Authors: Sorelle Deutcheu Nienga , Narcisse Vemo Bertin , Momo Chongsi Margaret Mary , Herve Tchoffo , Ferdinand Ngoula , Joseph Tchoumboue
Published: January 2023

Some medicinal plants with antioxidant properties have protective effects on reproductive parameters and neutralize the harmful effects of hazardous. Spirulina possesses high concentration of nutrients responsible of their biological activities and nutritional properties. The present study aimed at assessing the protective effect of aqueous extract of Spirulina platensis (AESP) in alleviating the lead-induced impairment of reproductive function in female guinea pig. For this purpose, Sixty (60) sexually mature females were divided into six groups of ten (10) animals each. The first batch served as neutral control, receiving distilled water, the second as negative control, receiving lead acetate at a dose of 12 mg/kg body weight (bw) while the third set, the positive control, was given 12 mg of lead acetate/kg bw and 100 mg of vitamin C; the groups 4, 5 and 6 were treated with 12 mg/kg bw of lead acetate and thereafter received 50, 100 and 200 mg/kg bw of AESP respectively. Lead acetate was administered for 30 days and then after the curative substances were given for 60 days. All the administrations were done through oral route. The reproductive and biochemical parameters were studied. Results revealed that lead acetate induced significant (p<0.05) decrease in final body weight, sex organs weight, concentrations of Luteinizing Hormone (LH), Follicle Stimulating Hormone (FSH) and estradiol. Lead acetate also lead to an increase in malondiadehyde concentration and to a drop in superoxide dismutase and catalase activities. The post exposure treatment of female guinea pig with AESP improved the harmful effects of Lead acetate. Therefore, the AESP can be promising as a natural therapeutic agent in Lead-induced reproductive toxicity and oxidative stress in female guinea pig.
Ethical Leadership Role in Job Embeddedness and Job Involvement ‎
Authors: Jami Mohammed S. , Massoudi Aram H. , Al-Salami Qusay H.
Published: January 2023

The aim of this article is to verify the relationship between ethical leadership (EL) and job embeddedness (JE) and job involvement (JI) in charity organizations in Erbil province, Iraq. Also, identifying the role of ethical leadership in enhancing job involvement and job embeddedness. The data were collected by questionnaire distributed to 320 staff working at charity organizations in Erbil, Iraq. The data were analyzed by IBM-SPSS 26 to test the hypothesis of the study. The outcome of this article showed a positive relationship between EL and JE and JI. Also, there is a positive effect between the EL and JE. The implication of the study point to the essential role of ethical leadership in changing employees’ attitudes positively toward job involvement and satisfaction.
Factors Influencing Individual’s E-wallet ‎Usage in Kurdistan Region of Iraq
Authors: Sulaiman Twana T.
Published: January 2023

E-Wallets play a critical role in many ways people do cashless transactions. Technology innovations have made smartphone users carry out many transactions or payments using applications installed on their smartphones. The COVID-19 pandemic has boosted cashless payment awareness in numerous countries, including Iraq. The research objectives are to determine the factors that influence E-wallet usage in the Kurdistan Region of Iraq. This study methodology uses a questionnaire distribution based on the structural equation model. Ninety-nine sets of valuable data were collected from lecturers who use the FastPay E-Wallet application at the University of Cihan-Erbil. The collected data have been analyzed using SmartPLS data analysis software. The current study revealed that perceived security, trust, ease of use, and usefulness strongly influence E-Wallet usage. A future study suggests researching different E-Wallet applications since this research only focused on FastPay.
Islamic Business Ethics in Muhammad Syafii Antonio's Thought
Authors: Faozi Latif
Published: January 2023

Islam regulates all matters relating to human activity. Also included in business activities. In the case of muamalah, all things are considered permissible unless there is evidence that forbids it. So in business it is permissible and even innovation is needed. Islam of course has ethics in business which are all contained in the Koran and can be seen from the actions of the Prophet Muhammad. Muhammad Syafii Antonio as a Muslim economist has his own picture of Islamic business ethics. As a convert, his views on Islamic business ethics deserve to be studied.