bluuebunny/crossref_metadata_2025 huggingface dataset:
Ultrasound homogenization of milk cream at low temperature
Authors: Choirun Nisa Fithri , Zhu Fan , Perera Conrad , Huang Liurong , Hemar Yacine
Published: December 2021

Ultrasonication has been identified as a particularly promising technology for homogenization of dairy products. Homogenization of cream, by reducing fat globule size, can be utilized to inhibit creaming. The homogenization of cream usually leads to increased viscosity. Cream with fat level greater than 17% cannot be homogenized with satisfactory results since conventional homogenization methods cause coalescence and mostly agglomeration. The aim of this study was to investigate the influence of ultrasonication on milk cream (5-30% fat) and to study the phenomenon of formation of fat clusters during sonication (0.5-15 mins) at low temperature (2°C). The results showed that ultrasonication can reduce the fat globule size, although it resulted in the formation of fat clusters at short time (<1min), but at longer time, fat clusters can be broken. On the other hand, ultrasound homogenization tends to increase the viscosity of cream at various fat contents. Microstructure of solid phase showed that there was formation of double emulsions and partial fat coalescence. Ultrasound homogenization with the addition of SDS as small-molecule surfactant can prevent the formation of fat clusters. Fatty acid composition in solid phase shows that it consists of long-chain fatty acids in higher amount compared to that present in the liquid fraction. Whereas the concentration of short and medium chain fatty acids in the liquid phase was higher compared to that in solid phase. The utilization and optimization of ultrasound for cream homogenization has a potency to solve the limitation of conventional method (pressure homogenizer) which commonly used in dairy industry.
PENETAPAN BATAS LAUT TERITORIAL INDONESIA-TIMOR LESTE DI WILAYAH LAUT TUMPANG TINDIH
Authors: Ekon Yanto
Published: December 2021

Indonesia and Timor Leste in determining the overlapping territorial sea boundaries in the Ombai Strait, Wetar Strait and Timor Sea are increasingly complex and complicated because of the different baseline application rights between the two countries. The difference is that Indonesia as an archipelagic states has the right to apply normal baselines, straight baselines from point to point and straight baselines of islands, while Timor Leste as a coastal state has no right to apply archipelagic baselines but can only apply normal baselines and straight baselines. This paper aims to analyze and explain how to define the territorial sea boundaries etween Indonesia and Timor Leste in the Ombai Strait, Wetar Strait and Timor Sea This type of research is normative research with data sourced from secondary data Based on the data and analysis conducted, it can be concluded that the determination of territorial sea boundaries in the Ombai Strait, Wetar Strait and Timor Sea begins with the determination of the base point, drawing baselines and boundary lines by the Indonesia and Timor Leste However, the obstacle that will be faced by Indonesia and Timor Leste is the existence of islands in overlapping areas, which must first be determined whether or not it can be determined as the base point for drawing the baseline.
KEADILAN BAGI PENYALAHGUNA NARKOTIKA DI INDONESIA
Authors: Komalasari Rita , Nurhayati Nurhayati , Mustafa Cecep
Published: December 2021

This article presents the perceptions of Indonesian Judges in sentencing minor drug offenders. The judge holds a central role in the sentencing process, and because of the judicial discretion they can use it is essential to understand how judges come to their sentencing decisions. To develop an understanding of how judges perceive their actions in decision-making and sentencing of drug users, a total of 31 participants were interviewed. The data demonstrated that justice is presented as conditional, depending on various influencing factors that are primarily, though not entirely, one of tension and contradiction. One of the factors that influence the judge's decision is politics and the legal apparatus. This article contributes to the perception of judges who are influenced by juridical and sociological factors.
PENCABUTAN HAK POLITIK TERPIDANA KORUPSI DALAM PERSPEKTIF SOCIAL CONTRACT THEORY
Authors: Karianga Indra , Arsalan Haikal , Yubagyo Lidya , Ezra Cavita
Published: December 2021

This research aim is to provide a theoretical basis to permanently remove the political rights of a former prisoners of corruption as an alternative to achieve the purpose of criminal law. This normative research uses conceptual, statute and philosophical approach method. This research result indicate that based on the social contract theory, corruption is a criminal act which has injured the volonte generale and in this regard, a new concept is offered. The new concept is permanent revocation of political rights for a former coruption convicts that in line with peines infarmantes principle but does not apply automatically and must go through a court decision and be apllied for life (restitutio in integrum).
Biodegradation of Basic Yellow Auramine- O Dye using Staphylococcus sp. Isolated from Textile Industry Effluent
Authors: Shet Anil R.
Published: December 2021

Due to the increased use of synthetic dyes in various industries, there is an increased disposal of wastewater containing harmful dyes. These, in turn, have affected plants, animals, and humans. The physical and chemical methods of dye decolorization have failed to degrade the synthetic dyes in industrial effluents completely. The microbial decolorization is better due to its versatility, dynamic metabolism, and potential machinery of enzymes. This study aimed to degrade basic yellow dye auramine O by bacteria isolated from textile industry effluent. In this regard, five bacterial strains were isolated and screened from a soil sample taken from textile industry effluent. The initial physical and biochemical characterization of the bacterial isolates 1 and 2 indicated catalase test-positive, starch test-negative, motility agar test-negative, gram staining test-positive, and morphology-bacillus. The bacterial isolates 3, 4, and 5 indicated oxidase test-negative, urease test-positive, gram staining test-negative, and morphology-staphylococcus. All the isolates were further subjected to a screening test, where isolate 5 showed maximum dye decolorization of 98.9% in 96 h. The biodegradation of dye was optimized for different values of initial pH (4-10), inoculum size (2% -10%), initial dye concentration (50 mgL-1 to400 mgL-1), carbon source (glucose, fructose, xylose, starch and lactose) and nitrogen source (peptone, ammonium sulphate, yeast extract, ammonium nitrate and urea). Maximum dye decolorization was observed for initial dye concentration of 200 mgL-1, initial pH of 6, inoculum size of 10%, yeast extract as nitrogen source, and glucose as carbon source. Therefore, dye degradation by bacteria can be used as a potential method for auramine O dye treatment.
Partilhar a ausência
Authors: De Miranda Gabriel
Published: December 2021

Este ensaio se debruça sobre a série de fotografias Ausencias do argentino radicado na Catalunha Gustavo Germano. Através de uma preocupação em relação ao suporte da fotografia e o processo de montagem, o texto busca estabelecer algumas relações da série fotográfica com a problemática da percepção estética, baseado em alguns apontamentos de David Lapoujade quanto às possibilidades da recepção das fotografias se configurar como uma participação ou uma transferência de ponto de vista. Do mesmo modo, o ensaio busca analisar as fotografias como modos de desautomatização do olhar e de saída de um efeito “anestético” da arte e da percepção como notado por Susan Buck-Morss. O ensaio ainda busca demonstrar o uso da “face” como meio de identificação na série fotográfica, entendendo-a como uma espécie de comunicação pré-linguística que busca ultrapassar a diferença com o outro sem apaga-la por completo. Deste modo, o gesto fotográfico de Germano dá esteio para imaginar uma expansão do ponto de vista do desaparecimento para além do cerco familiar ou da esfera pública das políticas de memória, colocando em cena uma arte do Comum, saindo da dicotomia público-privada para adentrar uma partilha sul-americana do passado.
O colonialismo filtrado pelo olhar
Authors: Madeira Bruno , Rodrigues Filipa
Published: December 2021

A fotografia e a sua relação com uma almejada verdade histórica tem sido complexa. Olhar para ela como mero documento-fonte, ignorando a sua dimensão subjetiva, não corresponde a uma aproximação à totalidade do seu discurso, denotado e conotado, e da sua retórica. Por conseguinte, olharemos para a fotografia como processo de construção intencional de verdades, de discursos e de narrativas com objetivos políticos, culturais, sociais e económicos. No fundo, partimos da conceção de que a imagem produzida é sempre fruto das relações de poder existentes na sociedade em que é fixada e à qual se destina.

Neste artigo, propomo-nos refletir acerca desta tensão entre a objetividade e a subjetividade da imagem a partir do estudo da fotografia colonial produzida pelos serviços da Diamang. Nela procurando pensar a dicotomia visibilidade-invisibilidade e testando conceitos como os de alteridade, subalternidade e dominação. Avançaremos também com uma proposta de classificação e de leitura da narrativa visual da Diamang, centrando-nos em seis imagens-exemplo.
Divergencia genética entre progenies de Cordia trichotoma en una plantación mixta con Dalbergia nigra
Authors: Dos Santos Wanderley , Souza Bruno Marchetti de , Zulian Daniele Fernanda , Alves Gilberto Terra Ribeiro , Moraes Mário Luiz Teixeira de , Sousa Valderês Aparecida de , Aguiar Ananda Virginia de
Published: December 2021

Cordia trichotoma es una especie nativa que está siendo evaluada para diferentes sistemas forestales. El hecho de que los individuos empleados en las plantaciones posean algún grado de mejoramiento genético tiene muchas ventajas; para lograr este mejoramiento es fundamental la obtención de genotipos superiores, a fin de obtener un mejor rendimiento del producto final. El objetivo del presente estudio fue estimar la divergencia genética de progenies de C. trichotoma en dos diferentes condiciones de textura de suelo, por medio de caracteres fenotípicos. El diseño experimental fue bloques completos al azar, un árbol por parcela con 40 (área 1) y 34 (área 2) repeticiones, con espaciamiento de 3,0 m × 3,0 m. Los caracteres evaluados fueron: diámetro a altura del pecho, altura total de plantas, diámetro de cuello y altura del primer verticilo. Para estimar la divergencia genética y el agrupamiento de Tocher fue utilizado el método REML/BLUP. Las distancias entre las progenies en el área 1 fueron de 2,13 y 47,74 (17 y 15), en el área 2 las distancias entre las progenies fueron de 3,64 (9 y 15) y 48,28 (12 y 7). Las progenies formaron diez y cuatro grupos distintos (área 1 y área 2). Los caracteres que más contribuyeron para divergencia genética fueron diámetro a la altura del pecho-2016 (14,65%) área 1, y altura total de plantas-2014 (14,32%) área 2. Las progenies de C. trichotoma presentaron alta divergencia genética. En programas de mejoramiento, se recomienda el cruzamiento entre progenies de los grupos más divergentes para priorizar la ganancia con selección de los genotipos más productivos.
A close up of daily temperature and moisture in two Mexican high-elevation forests
Authors: Correa-Díaz Arian , Gómez-Guerrero Armando , Velasco-Bautista Efrain
Published: December 2021

The scarcity of meteorological stations and the strong need for climatic information in alpine forests require the use of large-scale climatic algorithms but the lack of in situ information produces high uncertainty on their suitability. In this study, we used linear mixed models to study the topographic effect (elevation and aspect) and time variations (from hourly to monthly) on temperature (T) and relative humidity (RH) with a 5-year instrumental database. Furthermore, we compared climatic information from a geographical algorithm and our in-situ data. Our data covered two mountains (Tláloc-TLA and Jocotitlán-JOC, State of México), four elevation belts (from 3500 m to 3900 m a.s.l.), and two aspects (Northwest and Southwest). We found differences for average temperature (TLA = 7.56 °C ± 0.03 °C and JOC = 6.98 °C ± 0.02 °C), and relative humidity between mountains (TLA = 69.3% ± 0.12% and JOC = 72.5% ± 0.13%,). The most significant variables explaining T were the elevation (Δ= -0.36 °C by 100 m) and aspect, while the aspect was relevant for RH. May was the warmest month (9.50 °C ± 0.10 °C for average temperature) while September the wettest for both mountains (85.1% ± 0.30% and 87.4% ± 0.25 % RH, respectively). Despite the higher correlations between climatic sources (up to r = 0.83), the geographical algorithm overestimates T and underestimates RH. We propose that when climatic information from geographical algorithms is used in alpine forests, calibrations are needed whenever possible with in situ information.
Corncob residue as heterogeneous acid catalyst for green synthesis of biodiesel: A short review
Authors: Mardina Primata , Wijayanti Hesti , Tuhuloula Abubakar , Hijriyati Erita , Sarifah
Published: December 2021

The utilization of an appropriate catalyst in biodiesel production depends on the free fatty acid content of vegetable oil as a feedstock. Recently, heterogeneous acid catalysts are widely chosen for biodiesel production. However, these catalysts are non-renewable, highly expensive and low stability. Due to the aforementioned drawbacks of commercial heterogeneous acid catalyst, a number of efforts have been made to develop renewable green solid acid catalysts derived from biomass. Published literature revealed that the application of the biomass derived solid acid catalysts can achieve up to 98% yield of biodiesel. This article focused on corncob as raw material in solid acid catalyst preparation for biodiesel production. The efficient preparation method and performance comparation are discussed here. The corncob derived heterogeneous acid catalysts provides an environmentally friendly and green synthesis for biodiesel production.
Microwave-assisted biosynthesis and characterization of ZnO film for photocatalytic application in methylene blue degradation
Authors: Sulistyo Rini Ari , Nabilla Averin , Rati Yolanda
Published: December 2021

This study aims to investigate the physical characteristics and photocatalyst activity of biosynthesized ZnO with pineapple (Ananas comosus) peel extract under microwave irradiation. The ZnO powder was prepared in two different concentrations of zinc nitrate hexahydrate (ZNH) at 200mM (Z-200) and 500 mM (Z-500). The optical, structural, and morphological properties of ZnO were analyzed using UV-Vis spectroscopy, X-Ray Diffraction (XRD), and Scanning Electron Microscopy (SEM), respectively. The UV-Vis absorption spectrum showed a wide absorbance peak of ZnO at the wavelength of 300-360 nm with a bandgap energy of 3.22 and 3.25 eV. The XRD result confirmed the wurtzite structure of ZnO with high crystallinity. SEM morphology showed spherical particles with an average particle size of 190-220 nm. For photocatalytic application, ZnO film was fabricated via the doctor blade method from microwave-assisted biosynthesized ZnO powder. ZnO films were then applied under UV-irradiation to examine the photocatalytic degradation of methylene blue. It was found that the catalytic behavior of ZnO film was affected by the starting ZNH concentration with maximum effectiveness of 46% degradation after 2 h.
The influences of lime and irrigation water on arsenic accumulation of rice, maize and mungbean in the nethouse condition
Authors: Chuong Nguyen Van
Published: December 2021

This research found the great hold of liming, soils and irrigation water on the arsenic (As) accumulation of rice, maize and mung bean in the nethouse research. Two greenhouse experiments had various plant types of rice, maize and mung bean with two soils inside and outside the dyke, two irrigated waters of 0.0 and 200 ?g As/L and three different lime ratios (0, 7.0 and 9.0 tons CaO/ha). The whole treatments were twenty one (12 treatments of experiment 1 and 9 of experiment 2) with 4 repetitions. The results of this study showed that the lime application raised both soil pH and crop yield. The arsenic (As) absorption of plant bodies in stems and seeds inside the dyke increased from 67.8 to 68.3% higher than those outside the dyke, respectively. The arsenic contents of stems and seeds with the treatments of 200 ?g As/L irrigation water were higher from 81.5 to 89.4% than that of non As irrigation water, respectively. The lime supplementation of 7.0 and 9.0 tons CaO per ha reduced the As accumulation of stems and seeds of rice, maize and mung bean was lower than the one without lime supplement from 38.6 (stems) and 54.5 (seeds). Mung bean absorbed the highest As, followed by rice and maize with the lowest As value. However, the lime supplementation of 9.0 tons CaO/ha had so high soil pH of soil that restricted the growth and yield of crops. More different lime concentrations need to search for more new details and new discovery of positive effects of this research.
Mg/Al-CH, Ni/Al-CH and Zn/Al-CH, as adsorbents for Congo Red removal in aqueous solution
Authors: Siregar Patimah Mega Syah Bahar Nur , Normah  , Juleanti Novie , Wijaya Alfan , Palapa Neza Rahayu , Mohadi Risfidian , Lesbani Aldes
Published: December 2021

In this study, chitosan was extracted from shrimp shells by demineralization and deproteination processes. The extracted chitosan was used to modify the layered double hydroxide and used as an adsorbent for the removal of congo red from aqueous solutions. Composites were successfully synthesized using M2+/Al (M2+ = Zn, Mg, Ni) and chitosan (CH) and the samples obtained were characterized using XRD and FTIR. The X-ray diffraction (XRD) pattern appeared at the layered double hydroxide peak of 2? = 11.63°; 23.00°; 35.16°; and 61.59° and chitosan at 2? = 7.93° and 19.35. The composite appearing in the layered double hydroxide and chitosan indicated that the composite material has been successfully synthesized. The XRD diffraction patterns of Zn/Al-CH, Ni/Al-CH, and Mg/Al-CH showed low crystallinity. The Fourier Transform Infrared (FTIR) spectra verifying absorption spectrum showed the presence of two bands at 3448 cm-1, 1382cm-1 characteristic to both chitosan and LDH. Adsorption of Congo Red (CR) followed the pseudo-second-order and Langmuir isotherm models. The adsorption capacities of Zn/Al-CH, Ni/Al-CH, and Mg/Al-CH were 181.818 mg/g, 227.273 mg/g, and 344.828 mg/g, respectively. The layered double hydroxide-chitosan composite adsorption was endothermically characterized by positive enthalpy and entropy values. On the other hand, the adsorption spontaneously was characterized by a negative Gibbs free energy value. The composites in this study were formed from LDH modified from chitosan extracted from shrimp shells to form Zn/Al-CH, Ni/Al-CH, and Mg/Al-CH. The results of the characterization showed a number of characteristics that resembled the constituent materials in the form of LDH and chitosan. After being applied as an adsorbent to absorb Congo red dye, it then showed the most effective results using Mg/Al-CH adsorbent with an adsorption capacity of 344.828 mg/g.
The gompertz exponential pareto distribution with the properties and applications to bladder cancer and hydrological datasets
Authors: Adeyemi Adewunmi Olaniran , Akarawak Eno Emmanuella , Adeleke Ismail Adedeji
Published: December 2021

Many existing distributions in literatures does not have the modeling fits capacity to adequately describe the real-life phenomena. The Exponential Pareto (EP) distribution has further gained some generalizations among several authors using different generator techniques with an aim to obtain a new distribution with greater flexibility. This article proposes Gompertz Exponential Pareto (GEP) distribution using the Gompertz generator. Findings from the study revealed some lifetime distributions as special cases and mathematical properties of the distribution investigated including the mean, variance, coefficient of variation, quantile, moment, moment generating function and, order statistics. The distribution can be positively or negatively skewed. It is unimodal with failure rates whose shapes could be reversed J bathtub, constant, decreasing and, increasing and the parameters were estimated using maximum likelihood estimation approach. Applications to two real-life datasets revealed the ability of GEP distribution to provide more flexibilities and better fit to the dataset compared to some previously proposed distributions for the data. The results also revealed that GEP had the superior performance over other generalizations of EP distribution existing in literatures and the performance has further strengthened the usefulness of the Gompertz-generator technique.
Dimensional analysis of partial discharge initiated by a metallic particle adhering to the spacer surface in a gas-insulated system
Authors: Budiman Firmansyah Nur , Rushdi Ali Muhammad
Published: December 2021

Partial discharges (PDs) constitute important phenomena in a Gas-Insulated System (GIS) that warrant recognition (and, subsequently, mitigation) as they are obvious symptoms of system degradation. This paper proposes the application of dimensional analysis, based on Buckingham pi theorem, for characterizing PDs provoked by the presence of metallic particles adhering to the spacer surface in a GIS employing SF6 (Sulphur hexafluoride). The ultimate goal of the analysis is to formulate the relationships that express three PD indicator quantities, namely current, charge, and energy, in terms of six independent quantities that collectively influence these indicators. These six quantities (henceforth referred to as the influencing, determining or affecting variables) include the level of applied voltage, the SF6 pressure, the length and position of the particle on the spacer, the duration of voltage application, and the gap between electrodes. To compute the pertinent dimensionless products, we implement three computational methods based on matrix operations. These three methods produce exactly the same dimensionless products, which are subsequently used for constructing the models depicting the relationships between each of the three PD dependent quantities and the common six determining variables. The models derived provide partial quantitative information and facilitate qualitative reasoning about the considered phenomenon.
Classification of Patients for Whom Benefit of Long-term Opioid Therapy No Longer Outweighs Harm: Protocol for a Delphi Study
Authors: Van Cleve Raymond , Edmond Sara , Snow Jennifer , Black Anne C , Pomeranz Jamie L , Becker William
Published: December 2021

Background

Patients with chronic pain prescribed long-term opioid therapy may come to a point where the benefits of the therapy are outweighed by the risks and tapering is indicated. At the 2019 Veterans Health Administration State of the Art Conference, there was an acknowledgment of a lack of clinical guidance with regard to treating this subset of patients. Some of the participants believed clinicians and patients would both benefit from a new diagnostic entity describing this situation.

Objective

The aim of this study was to determine if a new diagnostic entity was needed and what the criteria of the diagnostic entity would be. Given the ability of the Delphi method to synthesize input from a broad range of experts, we felt this technique was the most appropriate for this study.

Methods

We designed a modified Delphi technique involving 3 rounds. The first round is a series of open-ended questions asking about the necessity of this diagnostic entity, how this condition is different from opioid use disorder, and what its possible diagnostic criteria would be. After synthesizing the responses collected, a second round will be conducted to ask participants to rate the different responses offered by their peers. These ratings will be collected and analyzed, and will generate a preliminary definition for this clinical phenomena. In the third round, we will circulate this definition with the aim of achieving consensus.

Results

The modified Delphi study was initiated in July of 2020 and analysis is currently underway.

Conclusions

This protocol has been approved by the Internal Review Board at the Connecticut Veterans Affairs and the study is in process. This protocol may assist other researchers conducting similar studies.

International Registered Report Identifier (IRRID)

DERR1-10.2196/33310
Effectiveness and Cost-effectiveness of Online Brief Mindfulness-based Cognitive Therapy for the Improvement of Productivity in the Workplace: Study Protocol for a Randomized Controlled Trial (Preprint)
Authors: Sado Mitsuhiro , Yamada Masashi , Ninomiya Akira , Nagaoka Maki , Goto Naho , Koreki Akihiro , Nakagawa Atsuo , Segal Zindel , Mimura Masaru
Published: December 2021

BACKGROUND

Numerous studies have demonstrated the effectiveness of mindfulness-based programs (MBPs) among both clinical and nonclinical populations. These data document positive impacts in the workplace, including reducing perceived stress and burnout and increasing well-being. However, the effectiveness for productivity, which is of most interest to managers and administrators, is still unclear. In addition, MBPs in the workplace tend to be modified by reducing the number of the program sessions or delivering content online to improve accessibility. To date, however, the impact of MBPs that feature these modifications on productivity in the workplace has not been investigated.

OBJECTIVE

The study aims to investigate the effectiveness and cost-effectiveness of online-delivered brief mindfulness-based cognitive therapy (bMBCT) for improving productivity and other work-related outcomes among healthy workers compared to the waitlist control.

METHODS

We will conduct a 4-week randomized controlled trial (RCT) with a 6-month follow-up. Employees are included in the study if they (1) are between the ages of 20 and 65 years and (2) work longer than 30 hours weekly. Employees are randomly allocated to either the bMBCT group or the waitlist control group. The primary outcome of the study is the mean difference of productivity measured by the World Health Organization Health and Work Performance Questionnaire (WHO-HPQ) between the groups at 4, 16, and 28 weeks. Secondary outcomes include several clinical outcomes and health economics evaluation.

RESULTS

We started recruiting participants in August 2021, and the intervention began in October 2021. A total of 104 participants have been enrolled in the study as of October 2021. The intervention is scheduled to be completed in December 2023. Data collection will be completed by the end of January 2024.

CONCLUSIONS

The novelty of the study is that (1) it will investigate bMBCT’s effectiveness on productivity, which is still unclear, and (2) samples are recruited from 3 companies in different industries. The limitations of the study are that (1) all measures assessed are in self-report format and (2) we lack an active control group. This study has the potential to provide new data on the relationship between MBPs and occupational health and productivity.

CLINICALTRIAL

University Hospital Medical Information Network Clinical Trials Registry UMIN000044721; https://tinyurl.com/4e2fh873

INTERNATIONAL REGISTERED REPORT

DERR1-10.2196/36012
A Kinetic Study of Manganese Leaching from Low-Grade Psilomelane Ore by Acetic-Tannic Acid Lixiviant
Authors: Aryani Widya , Anggraini Astria Gesta , Bahfie Fathan , Herlina Ulin , Al Muttaqii Muhammad , Prasetyo Erik
Published: December 2021

Kinetic leaching of psilomelane using tannic acid as reductant and acetic acid as an acidic modifier is investigated in terms of tannic acid and acetic acid concentration, solid-liquid ratio, particle size and temperature. Kinetic modelling using three models: shrinking core, shrinking particle, and diffusion-interface transfer model revealed that at room temperature leaching (30 °C), experimental data are best modelled using diffusion-interface transfer model, indicating the dissolution of Mn is more affected by reaction rate among reactants and their concentration in bulk volume rather than by transfer across the boundary layer. At higher temperatures (≥ 50 °C), the shrinking particle model fits the experimental data best, suggesting the prominence of the diffusion process boundary layer. The apparent activation energy obtained at two temperatures were 13.1 and 52.7 kJ/mol for lower and higher temperatures. Plot between rate constant and concentration yields reaction order to be 1.28 for tannic acid and 0.73 for acetic acid. A semi-empirical model for each temperature range is proposed to describe the overall manganese leaching efficiency.
HEAT TREATMENT MATERIAL TIE ROD PADA TEMPERATURE 1000 0C TERHADAP STRUKTUR MIKRO, KEKERASAN DAN KEAUSAN
Authors: Firdhaus Firman , Setiawan Widia
Published: December 2021

Tie rod adalah salah satu komponen dari actuator coal pulverizer dengan fungsi sebagai penahan naik turunnya grinding roller pada saat proses penggilingan didalam coal pulverizer. PT PJB UBJ O&M PLTU Tanjung Awar-Awar sebagai perusahaan pembangkit listrik tenaga uap mengalami kendala seperti kebocoran coal pulverizer, breakdown coal pulverizer dan kebakaran akibat semburan batu bara. Salah satu penyebab utama dari masalah tersebut adalah tie rod pada coal pulverizer mengalami patah dan aus. Penelitian ini bertujuan untuk mendapatkan nilai kekerasan dan keausan yang optimal dengan memakai perlakuan panas. Penelitian ini membahas tentang pengaruh variasi perlakuan panas terhadap struktur mikro, nilai kekerasan dan nilai keausan pada baja AISI S5 Steel. Penelitian ini dilakukan perlakuan panas pada temperature austenite 10000C dengan waktu penahanan 24 menit yang kemudian diberi variasi pendinginan yaitu quenching, annealing dan quench tepering menggunakan temperature 2000C dengan penahanan 48 menit. Hasil dari perlakuan panas tersebut dianalisa struktur mikro, uji kekerasan dan uji keausan. Hasil penelitian ini menunjukkan bahwa material tie rod adalah baja perkakas AISI S5 Steel. Struktur mikro yang terbentuk pada spesimen raw material dan annealing adalah ferite dan perlite. Fasa ferrite dan martensite terbentuk pada material quenching dan quench tempering. Nilai kekerasan Proses heat treatment yang menghasilkan sifat yang optimal pada material tie rod adalah quench tempering, hal ini dikarenaka nilai kekerasannya meningkat menjadi 503,22 VHN, memiliki nilai keausan sebesar 0,832803 x 10-4 mm3/kg.m dan material quench tempering memiliki sifat ulet dan tangguh. Kata Kunci: AISI S5 Steel, Tie rod, Perlakuan panas, Uji kekerasan, Uji keausan
Desain dan Manufaktur Tabung Gas Komposit Karbon dengan Metode Wet Bladder Compression Moulding
Authors: Nugraha Aditya , Nugroho Gesang
Published: December 2021

Penggunaan material komposit semakin beragam seiring dengan kemajuan teknologi di berbagai bidang. Serat karbon merupakan material komposit yang banyak digunakan karena memiliki sifat mekanik yang baik, tahan korosi, memiliki rasio kekuatan terhadap berat jenis yang tinggi. Salah satu aplikasi penggunaan material komposit serat karbon yang sangat terbuka peluang pengembangannya adalah untuk tabung gas. Penelitian ini akan menyajikan desain, proses manufaktur, dan pengujian tabung gas komposit. Proses desain meliputi desain tabung gas komposit, desain cetakan, dan desain bladder. Tabung gas komposit terbuat dari serat karbon dan matriks resin epoxy sebanyak 6 lapis pada dinding tabung. Proses manufaktur dilakukan dengan metode wet bladder compression moulding yaitu dengan menggunakan dua buah mould dari material fiberglass bagian atas dan bawah, dan dengan menggunakan bladder atau kantung bertekanan dari latex untuk menekan material komposit. Uji hidrostatis dilakukan menggunakan manual test pump untuk menguji kekuatan tabung. Hasil pengujian menunjukkan tabung gas komposit serat karbon dapat menahan tekanan hidrostatis  hingga 18 bar.
Penyisihan Kontaminan dari Air Limbah Hasil Daur Ulang Baterai LiFePO4 (LFP) Menggunakan Penukar Ion Resin Kation Amberlite HPR1100 Na dan Resin Anion Dowex Marathon A
Authors: Suryohendrasworo Satryo Dewanto
Published: December 2021

Pada tahun 2025, diperkirakan kebutuhan baterai Li-ion akan mencapai 400.000 ton. Upaya strategis diperlukan untuk mewujudkan pemakaian baterai Li-ion yang berkelanjutan. Setelah siklus pemakaian baterai Li-ion berakhir, baterai Li-ion akan diproses kembali untuk diambil kandungan logam-logam penting yang terkandung di dalam katoda, terutama litium. Secara umum, proses recycle tersebut dilakukan dengan metode hidrometalurgi yang terdiri atas rangkaian leaching dan presipitasi. Namun demikian, dalam proses pemurnian tersebut dihasilkan air limbah yang mengandung beragam logam dengan konsentrasi yang berbeda. Untuk baterai LFP, logam-logam tersebut berasal dari katoda yang mengandung Li, Na, Si, dan PO4. Proses pelindian dan pencucian serbuk katoda membutuhkan air dalam jumlah yang relatif besar. Pengolahan air limbah hasil proses daur ulang baterai diharapkan dapat secara signifikan meningkatkan efisiensi penggunaan air. Pada eksperimen ini, metode adsorpsi batch dengan ion-exchange resin kation Amberlite HPR1100 Na dan resin anion Dowex Marathon A digunakan untuk menghilangkan ion logam dari air limbah artifisial. Pengambilan sampel air limbah yang diolah diambil pada menit ke-3, 6, 10, 20, 30 dan hari ke-3. Berdasarkan pada hasil removal percentage, diperoleh bahwa pengolahan air limbah artifisial metode adsorpsi dengan menggunakan ion-exchange resin kation Amberlite HPR1100 Na dapat mengurangi kadar ion litium dan natrium sampai 100% pada menit ke-20 dengan variasi dosis adsorben 10 g/100 mL, sedangkan penggunaan ion-exchange resin anion Dowex Marathon A dapat mengurangi kadar ion fosfat sampai 100% pada menit ke-30 dengan dosis adsorben 10 g/100 mL. Dengan adsorpsi isotherm didapat model Langmuir lebih sesuai dengan data eksperimen dengan nilai parameter Qm dan KL untuk ion litium sebesar 1,16 mg/g dan 2,57 mg/g, ion natrium sebesar 74,62 mg/g dan 0,04 mg/gL/mg, dan ion fosfat sebesar 208,33 mg/g dan 0,06 mg/g. Selain itu, studi kinetika menunjukkan bahwa model pseudo second-order memiliki kesesuaian data yang lebih baik daripada pseudo first-order.
Speech Based Emotion Recognition Using Machine Learning
Authors: K. P. Vaibhav
Published: December 2021

Abstract: Speech emotion recognition is a trending research topic these days, with its main motive to improve the humanmachine interaction. At present, most of the work in this area utilizes extraction of discriminatory features for the purpose of classification of emotions into various categories. Most of the present work involves the utterance of words which is used for lexical analysis for emotion recognition. In our project, a technique is utilized for classifying emotions into Angry',' Calm', 'Fearful', 'Happy', and 'Sad' categories.
Smart Alarm System (Drowsiness Detection System Review Paper)
Authors: Das Chiranjit
Published: December 2021

Abstract: With the increase in automative population, accident rates are rising rapidly, one of the major reasons is the state of drowsiness or fatigue. Such fatal incidents can be prevented if the driver is warned in time. With time, several drowsiness alarm systems are been implemented, the system monitors driver’s movements through various techniques, one of the most considerable one is face detection, Open Computer Vision is widely used to detect driver’s movements for a long period of time. A comparative study on different types of approach is summarized in this paper. The main agenda is to help the society to understand more about the techniques and find the most convenient method for them. Keywords: Drowsiness, Face Detection, Mouth Yawn Detection, Open Computer Vision
Simulation of Bidirectional Converter for Vechile to Grid and Grid to Vechile Application
Authors: Banerjee Swagata
Published: December 2021

Abstract: This paper represents a bidirectional converter for the application of vehicle to grid and grid to vehicle application. This converter can be used in the application of electric vehicle. And the results have been verified through simulation in MATLAB. The topology can provide an energy bi-directional flow path for energy exchange between the Libattery/supercapacitor (SC) hybrid energy storage system (HESS) of the electric vehicle and the grid. Keywords: bi-directional converter, vehicle, HESS, Li-battery.
Sentiment Analysis of Twitter Data for COVID-19 Lockdown: India Statewise Perspective
Authors: Kalra Dr. Sneh
Published: December 2021

Abstract: The whole human race is acquainted with the truth that COVID-19 has taken the form of a pandemic. Almost, all the countries are endeavouring their best to circumscribe the dispersion as much as possible. This paper focuses to observe sentiments of Indians during a nationwide lockdown to find what was going on in people's minds due to lockdown and its extension announced by the Indian government. Data has collected from Twitter during the second lockdown period. The results revealed that the majority of the people shows a positive attitude for declared lockdown and need the extension of the lockdown for a month or two to control the spread across the country. Keywords: COVID-19, Lockdown, Pandemic, Sentiments, Twitter
Computational Fluid Dynamics (CFD) Analysis of 3D Car Model to Understanding Key Aerodynamic Issues and Their Interaction with Other Motorsport & Automotive Vehicle System
Authors: Jadhav Rohit
Published: December 2021

Abstract: Growing population of vehicles is one the biggest global concern and it led to traffic problems and creates congestion. People are not getting place to park their vehicles. Travel by car for shorter distance also stressful and time consuming because they have to face road traffic and usually cars are big at size so, to travel by car on road need more spacious and traffic free roads. that’s why some manufacturers start designing & manufacturing One seater vehicle which can easily transportable and create less congestion. If a single person wants to ride somewhere then he doesn’t have to take large car for one person, He can use single seater vehicle. In this assignment I have Designed and Tested a single seater electric vehicle which can easily transportable, compact and personal commuter vehicle (PMV). Keywords: CFD analysis, Aerodynamics analysis, automotive vehicle system, 3D modelling, pressure plot, performance optimization, vehicle aerodynamics.
Optimization of Process Parameter in Wire Electrical Discharge Machining of H11 Tool Steel Using Response Surface Methodology
Authors: Vishwasrao Pratik R.
Published: December 2021

Abstract: Conventional machining is now being superseded by non-conventional machining to cope up with increased demand of machining of complex shapes with high surface finish machining and dimensional accuracy. Wire electric discharge machining (WEDM) is electro-thermal principle based nontraditional machining, widely used for machining of electrically conductive materials. This paper summarized, the parametric influence of Pulse-on duration (Ton), Pulse-off duration (Toff) and Pulse peak current (Ip) on material removal rate (MRR), surface roughness (SR) of H11 tool steel. Response surface methodology (RSM) is used for modelling and optimization. ANOVA has been carried out to identify importance of the machining parameters on the performance characteristics considered. Further the verification experiment has been carried out to confirm the performance of optimum parameters. The results from this study will be useful for selecting appropriate set of process parameters to WEDM machining of H11 tool steel.
Classification of Incomplete Sentences of the Russian Language
Authors: Z. U. Usmanova
Published: December 2021

Annotation: In the Russian language, there are different principles for the classification of sentences, and one of them is according to the completeness and incompleteness of a given syntactic unit. What exactly this means is explained at the lessons of the Russian language. This topic is very important for understanding the principles of writing sentences and syntax in general. Keywords: sentences, syntactics, grammar, semantics, complete sentence, incomplete sentence, structural features, meaning.
Peran Kader Koordinator Jumantik dalam Sosialisasi Program Gerakan Satu Rumah Satu Jumantik (G1R1J) di Kelurahan Patih Galung, Kota Prabumulih, Sumatera Selatan
Authors: Margarethy Indah , Salim Milana , Marini Marini
Published: December 2021

The One House One Jumantik Movement Program (G1R1J) involves the family as the smallest social unit in society in controlling dengue fever. G1R1J socialization in Prabumulih City was carried out in 2019, namely in Patih Galung Village. The role of the jumantik coordinator cadre in implementing a program is very important, especially in socialization in the community. This study aims to determine the perception of the jumantik coordinator cadre on the G1R1J and DHF programs that can affect the behavior of the community in implementing the G1R1J program in their environment. Data was collected by means of in-depth interviews and focus group discussions. The informants of this research are jumantik coordinator cadres in Patih Galung Village. The data is processed based on thematic analysis with the Health Belief Model (HBM) approach. The results of this study describe the role of the jumantik coordinator in disseminating G1R1J to the community, which is strongly influenced by the presence of community leaders who also act as jumantik coordinators, coupled with the jumantik coordinator's understanding of the concepts of DHF and G1R1J and the benefits of the G1R1J program itself. Lack of response or rejection from some communities can have an impact on the motivation of cadres to carry out their roles. For this reason, external support is needed in the form of assistance either by health workers as a reference source of health information, as well as from regional stakeholders, such as the head of the RT, Lurah or Camat to the jumantik coordinator to maintain the motivation and confidence that has been formed.
A EDUCAÇÃO FÍSICA NO ENSINO MÉDIO E OS EXAMES ESTANDARDIZADOS: UMA ANÁLISE DAS QUESTÕES DO ENEM
Authors: Marques Rodrigo , Gama Jean Carlos Freitas , Oliveira Junior Geraldo Luzia , Ferreira Neto Amarílio , Santos Wagner dos
Published: December 2021

O artigo analisa as questões do novo Enem que apresentam objetos de conhecimento da Educação Física, compreendendo as relações que se estabelecem por e entre as áreas do conhecimento mediadas pelas competências e habilidades. De natureza qualitativa, utiliza a análise crítico-documental como metodologia. As fontes são compostas por: 49 questões relacionadas com a Educação Física no exame (2009 a 2017), as Diretrizes Nacionais para o Ensino Médio, o Documento Básico do Enem e a Matriz de Referência do Enem. Os usos e apropriações dos objetos de conhecimento da Educação Física, devido à sua natureza multidisciplinar, favorecem a exigência da elaboração das questões do exame visando à interdisciplinaridade por e entre as áreas do conhecimento, explorando as relações cotidianas dos sujeitos. A interação entre os objetivos da área de Linguagens e suas Tecnologias, promovida pelo exame, permite-nos compreender a Educação Física dentro de um contexto amplo de formação, para além do saberes de domínio.
ADEQUAÇÕES DIDÁTICO-METODOLÓGICAS NA PRÁTICA DO SURFE PARA PESSOAS COM TRANSTORNO DO ESPECTRO AUTISTA
Authors: Moraes Letícia Baldasso , Marinho Alcyane
Published: December 2021

Este artigo objetiva identificar as adequações didático-metodológicas utilizadas nas aulas de surfe para pessoas com transtorno do espectro autista (TEA) na Associação Onda Azul (AOA) em Florianópolis/SC e propor uma estratégia pedagógica para o ensino deste esporte para esta população. Trata-se de uma pesquisa descritivo-exploratória, com abordagem qualitativa dos dados, realizada com voluntários da AOA, a qual utilizou como instrumentos de coleta de dados observações participantes, entrevistas semiestruturadas e diário de campo. Foram analisados conteúdos referentes ao planejamento das aulas, ao conteúdo, às adaptações, à comunicação e transmissão de conteúdo e às formas de avaliação. O estudo apresenta uma proposta pedagógica que extrapola as considerações feitas pelos voluntários e traz à luz estratégias para facilitar o ensino do surfe para pessoas com TEA. O surfe apresentou-se como uma fértil oportunidade de desenvolvimento para pessoas com TEA e os professores devem respeitar as individualidades dos alunos dispostos a realizar adaptações.
TRANSIDENTIDADES PARA UMA EDUCAÇÃO FÍSICA ACOLHEDORA
Authors: Gonçalves Carlos Henrique Rego , Silva Carlos Alberto Figueiredo da
Published: December 2021

O objetivo deste estudo é discutir o processo de exclusão resultante de projetos curriculares pautados em identidades minoritárias prontas, de forma a questionar as representações sociais majoritárias naturalizadas na Educação Física. Utilizou-se a técnica de revisão bibliográfica do tipo qualitativa, constituindo-se como uma revisão narrativa. Foi consultado o banco de dados do Google Acadêmico, no período entre 2000 e 2021, utilizando-se indicador booleano e descritores entre aspas. Justifica-se este estudo em função de que vários caminhos didático-pedagógicos presentes na literatura desconsideram diversas subjetividades, experiências e diferenças existentes dentro das diferenças, negligenciando a construção de identidades formadas dentro dos próprios marcadores identitários. Conclui-se que, ao se incentivar a coalizão entre várias teorias pós-críticas, assegura-se o sabor de novidade e a verve revolucionária fundamental para resolução de problemas identitários e projetos curriculares que buscam suplantar qualquer tipo de ficção naturalizante.
Tefe’ül Geleneği Bağlamında “Su’âl ve Cevâblı Tefe’ül-nâme Yâhûd Kolay Remiller” İsimli Eser Üzerine Bir İnceleme
Authors: EREN Hulusi
Published: December 2021

Tarih boyunca insan, bilinmeyeni öğrenme merakı içinde olmuştur. Bu merak onu evrenin kimi hadiselerini ya da kendi geleceğini bilme peşinde bazı faaliyetlere sürüklemiştir. Fal bak(tır)ma geleneği bu faaliyetlerin başında gelmektedir. Özellikle gelecek ve insan karakteri hakkında bilgi verme amacı taşıyan bütün gizemli faaliyetleri tanımlayan fal kelimesiyle, hayra yorma manasına gelen ve daha ziyade iyimser beklentileri dile getiren tefe’ül geleneği ortaya çıkmıştır. Tefe’ül ile başlanılacak bir işin, gerçekleşmesi istenen bir dileğin ya da çıkılacak seferin hayırlı olup olmadığı sorusuna yanıt aranır. Tefe’ül yıldız falı, çiçek falı, el falı ve kum falı gibi farklı metotlarla yapılabilmektedir; ancak kitaptan tefe’ül, en sık başvurulanıdır. Abdest alıp dua etme gibi birtakım ritüellerden sonra Kur’ân-ı Kerîm ve Mesnevî başta olmak üzere Hâfız ve Örfî divanları ile Sa’di’nin Gülistân’ı gibi bazı kitaplardan tutulan niyetin hayır mı şer mi olduğu sorusuna cevap aranır. Bunların dışında yazılmış tefe’ül kitapları da bulunmaktadır. Suʾâl ve Cevâblı Tefeʾül-nâme Yâhûd Kolay Remiller isimli matbu eser de bunlardan biridir. Bu çalışmada önce tefe’ül geleneğinin ortaya çıkışı ve Osmanlı şiirindenki örnekleri genel hatlarıyla ele alınacaktır. Daha sonra söz konusu eserin yazılış amacı, şekil ve muhteva hususları incelenecek, çalışmanın sonunda ise eserin transkribe metnine yer verilecektir.