bluuebunny/crossref_metadata_2025 huggingface dataset:
Modeling a Water-based Concentrated Photovoltaic-Thermal (CPVT) hybrid collector: Analysis of the Influence of Mass Flow rate on Temperature and Photovoltaic Performance
Authors: SAVADOGO Mahamadi , TCHEDRE Kpéli Esso-Ehanam , SOURABIE Idrissa , ZONGO Abdul-Aziz , SAWADOGO Abdoulaye , ZERBO Issa , ZOUNGRANA Martial
Published: April 2024

The main objective of this paper is the modeling of a water-based concentration photovoltaic-thermal collector. This study also aims to investigate on the influence of the cooling water mass flow rate on the temperature and performances of a PV cell in such hybrid system.
On the basis of the thermal model, the thermal equation was determined at the steady-state. The numerical resolution of this equation allowed to plot the PV cell temperature profile according to light concentration and for different mass flow rates. It appears that the temperature rises with light concentration and falls down with increase in water mass flow rate towards the inlet temperature of this one. On the basis of the electrical model, diffusion parameters and electrical performance were extracted and plotted according to light concentration and mass flow rate.
The results show the decrease of the diffusion parameters with increase of light concentration and their improvement with increase of the mass flow rate. The current density and the short-circuit current density remain practically invariables under mass flow rate effect. But it appears a strong augmentation in voltage, open-circuit voltage, electrical power, electrical efficiency and fill factor when the mass flow rate increases. However, above 0.001 kg.s−1, it appears a drop in the cooling effect of water. This phenomenon is characterized by the slowing down of the favorable effect of an increasing water flow rate.
Exploring the Impacts of Digitizing Financial Products and Services in Microfinance on Entrepreneurial Innovations in Sub-Saharan Africa
Authors: ARSENE MBA FOKWA
Published: April 2024

This article seeks to explore the impacts of digitizing financial products and services in microfinance on entrepreneurial innovations. Utilising a recursive bivariate probit regression on panel data from 180 microfinance institutions in Sub-Saharan Africa spanning from 2019 to 2022, the primary findings are as follows: (i) a positive and significant influence of the digitization of microfinance products and services on the establishment and funding of startups; (ii) digitization stimulates the funding of the expansion of already established enterprises; (iii) these advantageous effects of digitization on entrepreneurial activities are more pronounced in urban areas than in rural areas; (iv) these digitization effects are more pronounced among men in comparison to women. Moreover, the digitization of microfinance products and services enhances startup funding by 27.35% more than the funding of the expansion of existing enterprises, by 25.36%. It is essential to augment financial innovations tailored to the needs of the clientele to nurture heightened entrepreneurial creativity.
JEL codes : D 23, G19, M13, R51
Investigation of Curvature Functions of Special Ruled Surfaces in Euclidean 3-Space
Authors: Saad M. Khalifa , Abdel-Aziz H. S. , Sorour Adel H.
Published: April 2024

This paper aims to study special types of ruled surfaces in three-dimensional Euclidean space E3. These surfaces are constructed by focal and slant curves, and generated by Frenet vectors of these curves. Also, some geometric properties and important results for these surfaces such as related to the curvatures of these surfaces are obtained. Finally, some computational examples that illustrate the validity of the theoretical results of this study are given and plotted.
MSC (2020). 53A04, 53A05, 53A10, 53C40.
Model optimization based on Hybrid Pneumatic Artificial Muscle Group and Its Genetic algorithm PID Control
Authors: Li Qingwei , Ma Shifei , Wu Zufen
Published: April 2024

Pneumatic Artificial Muscle (PAM) can be classified as mono-articular tendon and biarticular tendon in humanoid robot limb. Biarticular PAM acts on two or more joins simultaneous, while monoarticular PAM only acts on single joint. Biarticular PAM and monoarticular PAM mixed with each other and can be worked as Hybrid Pneumatic Artificial Muscle Group(HPAMG), in which two monoarticular PAM are series connected first, and then parallel connected with biarticular PAM. It's important to know how biarticular PAM and monoarticular PAM are orderly coordinated with each other in trajectory tracking with load. Optimization algorithms including ant colony algorithm optimization (ACO)and ant colony genetic algorithm optimization (ACGAO) were proposed, integrating with Proportional-Integral-Derivative (PID) control algorithm to track both monoarticular PAM and monoarticular PAM trajectories. Genetic algorithm PID (GAPID) was specifically adapted and subjected to experimental, to validate its superiority compared with PID. Experiment results indicate that ACO+PID and ACGAO+PID exhibited significant efficacy compared with the exclusive utilization of PID control algorithm. Furthermore, the ant colony genetic algorithm surpassed the performance of the ant colony algorithm. Notably, genetic PID trajectory tracking demonstrated distinct advantages over conventional PID control. The synergistic application of ACGAO and GAPID demonstrated a robust capability in achieving precise trajectory tracking.
Analysis of electric power generated by zeolite grain size variables for porous ceramic materials in battery
Authors: Respati Sri Mulyo Bondan , Nugroho Agung , Iskandar Ilham , Mauludin Mochamad Subchan
Published: April 2024

The battery component with the most important role is the separator. The separator is used as a battery cell to store a source of electricity and separate the cathode and anode. The separator in a battery is often damaged because its material is easily crushed or broken. This study aimed to create a new separator cell using a porous ceramic made from a mixture of zeolite sand and corn flour. This porous ceramic as a battery separator is sought to increase the ionic conductivity and thermal stability of the battery. The ceramic is divided into 4 grain size variables, namely grain size using 100, 30, and 16 mesh sieves—and grain size without using a sieve, or coarse grain. The making process begins with zeolite sand sifting. The sifted zeolite is then mixed with corn flour. The composition of the mixing is 92% zeolite and 8% corn flour. Then green ceramics molding are carried out at a pressure of 15 MPa. Then sintering is carried out in the furnace for 4 hours at a temperature of 900°C. The resulting porous ceramics are assembled onto batteries. The finished batteries are then tested for mains voltage. The porous ceramics are micro-photo tested. The results of the stress test show that the 100 mesh sieve zeolite variation has a voltage of 3.97 volts, the 30 mesh sieve zeolite variation has a voltage of 3.72 volts, and the 16 mesh sieve zeolite variation has a voltage of 3.43 volts. Whereas the zeolite variation without using a sieve cannot be molded because it is easily crushed so testing is impossible. Furthermore, the results of the micro-photo test show that for the 100 mesh sieve zeolite variation, the pores are relatively tight; for the 30 mesh sieve zeolite variation, there are several more pores when compared to the 100 mesh sieve; and for the 16 mesh sieve zeolite variation, the most (largest) pores among the three grain size variables are found
Are Technologies Useful and Easy to Use: Results of A Cross-Sectional Survey
Authors: Lock Adinet
Published: April 2024

Tools and technologies have strengths and weaknesses and can either reduce or increase complexity and make work easier or harder. This article aims to report the results of a survey that assessed the usefulness and ease of use of tools and technologies, and perceptions of participants about tools and technologies as a factor in complexity and project failure. A cross-sectional survey of 114 project managers, researchers, and decision-makers was conducted to assess if tools and technologies that participants use in their work are useful and easy to use by asking two questions based on a validated tool of user acceptance of technologies. Additionally, two questions asked participants which tools and technologies were most helpful in their work – one was an open question, and the other provided pre-selected choices of tools and technologies. Few participants chose tools and technologies as a factor that contributes to complexity and project failure, and most participants rated tools and technologies as useful and easy to use. However, the tools and technologies that were chosen by most as helpful for work, tend to be older and simpler and include tools such as checklists. In conclusion, even though tools and technologies are advancing rapidly, most participants in the current survey chose older tools and technologies as helpful in their work. The relevance of these findings is that there appears to be barriers to the adoption of newer technologies such as artificial intelligence and algorithms. The barriers to the adoption of new tools and technologies should be explored further.
Forward proton measurements with ATLAS
Authors: Schmidt Mustafa
Published: April 2024

The ALFA subdetector is designed to measure elastic proton-proton scattering from which the total cross section and \rhoρ-parameter are determined. In 2016, special runs at a center-of-mass energy of \sqrt{s}s = 13 TeV and with \beta^\starβ⋆ = 2.5 km were recorded.
Optimization of lubrication characteristics of wind turbine’s transmission system based on Newton Raphson method
Authors: Cao Li , Sun Wenlei , Gou Tao
Published: April 2024

To improve the reliability and lifespan of wind turbines, this paper takes the two-stage fixed shaft gearbox experimental platform of wind turbines as the research object. Based on Hertz contact theory, the oil film pressure and thickness in the contact area are solved by combining the equations of elastohydrodynamic lubrication and the Newton Raphson method; And the lubrication characteristics of the transmission system were analyzed to verify the correctness of the method; At the same time, in response to partial load phenomenon caused by system coupling deformation, genetic algorithm was selected to modify the gear teeth. The results show that the max unit load on the tooth face and the maximum stress of tooth root decreased by up to 26.48 % and up to 20.35 % respectively after modification which can improve the uneven distribution of oil film and the lubrication performance of the tooth surface.
Spatiotemporal assessment of pathogenic Leptospira in subtropical coastal watersheds
Authors: Bridgemohan Ronell , Deitch Matthew J. , Harmon Emily , Whiles Matt R. , Wilson P. Christopher , Bean Eban , Bridgemohan Puran , Bisesi Joseph H. , Nicholas Jodel , Redhead Aaden , Bachoon Dave S.
Published: April 2024

The World Health Organization classifies leptospirosis as a significant public health concern, predominantly affecting impoverished and unsanitary regions. By using the Pensacola Bay System as a case study, this study examines the underappreciated susceptibility of developed subtropical coastal ecosystems such as the Pensacola Bay System to neglected zoonotic pathogens such as Leptospira. We analyzed 132 water samples collected over 12 months from 44 distinct locations with high levels of Escherichia coli (>410 most probable number/100 mL). Fecal indicator bacteria (FIB) concentrations were assessed using IDEXX Colilert-18 and Enterolert-18, and an analysis of water physiochemical characteristics and rainfall intensity was conducted. The LipL32 gene was used as a quantitative polymerase chain reaction (qPCR) indicator to identify the distribution of Leptospira interrogans. The results revealed 12 instances of the presence of L. interrogans at sites with high FIB over various land cover and aquatic ecosystem types. Independent of specific rainfall events, a seasonal relationship between precipitation and elevated rates of fecal bacteria and leptospirosis was found. These findings highlight qPCR's utility in identifying pathogens in aquatic environments and the widespread conditions where it can be found in natural and developed areas.
Prevalence of antimicrobial resistance, biofilm formation, efflux pump activity, and virulence capabilities in multi-drug-resistant Klebsiella pneumoniae isolated from freshwater fish farms
Authors: Suresh Kummari , Pillai Devika
Published: April 2024

The present study aimed to determine the antibiotic resistance, underlying mechanisms, antibiotic residues, and virulence genes involved in 32 multi-drug-resistant Klebsiella pneumoniae isolates from freshwater fishes in Andhra Pradesh, India. Antibiogram studies revealed that all isolates were multi-drug-resistant, harbored tetA (96.8%), tetC (59.3%), tetD (71.9%), nfsA (59.3%), nfsB (53.1%), sul2 (68.7%), qnrC (43.7%), qnrD (50%), blaSHV (75%), blaTEM (68.7%), and blaCTX-M (93.7%) genes. Multiple antibiotic resistance index was calculated as 0.54. Sixteen isolates were confirmed to be hyper-virulent and harbored magA and rmpA genes. In total, 46.9, 31.2, and 21.9% of the isolates were categorized as strong, moderate, or weak biofilm formers, respectively. All isolates possessed an active efflux pump and harbored acrA, acrB, acrAB, and tolC genes in 94% of the isolates, followed by mdtK (56.2%). Porins such as ompK35 and ompK36 were detected in 59.3 and 62.5% of the isolates, respectively. Virulence genes fimH-1, mrkD, and entB were present in 84.3, 81.2, 87.5% of the isolates, respectively. These findings imply a potential threat that multi-drug-resistant bacterial pathogens could transmit to surrounding environments and humans through contaminated water and the aquaculture food chain.
DIGITAL LITERACIES AS SOCIAL PRACTICES IN COLLABORATIVE LEARNING
Authors: Souza Fábio Marques , Ferreira da Silva Rivaldo , Lins Élida Ferreira , Macedo Junior Helenildo Arruda de Macedo Junior
Published: April 2024

Digital literacies (DLs) encompass sets of literacy practices that are continuously supported, interwoven and adapted through the use of digital devices for specific purposes. It occurs in sociocultural contexts with geographical and temporal limitations, as well as in those shaped by electronically mediated interactions. In view of this, this article aims, from a critical perspective, to discuss the influences of Digital Literacy and the use of Audiovisual Resources on the mediation and practice of Teletandem. Therefore, this study is a qualitative research with bibliographic procedures. To support our arguments, we base ourselves on: Almeida Filho (1993), Benedetti (2010), Souza (2015), Rammé (2014), Rojo (2010), Cope, Kalantzis e Pinheiro (2020), Silva (2022), Arroio and Giordan (2006), Lemke (2010), Buzato (2006, 2009), Kenski (2007), among others. As a result, it was found that audiovisual resources enable the full development of the interactants' LDs and the construction of meanings.
PERCEPÇÕES SOBRE CORPO E EMOÇÕES ENTRE CONSUMIDORAS CRÍTICAS ANTICAPITALISTAS
Authors: Ramos Liliane Moreira , Pavesi Patricia , Valentim Julio
Published: April 2024

Este artigo tem como objetivo discutir, a partir das narrativas de um grupo de consumidoras críticas anticapitalistas, a centralidade dos afetos e emoções na construção de percepções sobre corpos, em processos de consumo político. Para tanto, analisamos três tipos de encaixe e táticas de acomodação: primeiro, entre um tipo de discurso sobre corpo que reivindica o status essencial de “natureza” e o papel estratégico deste corpo no posicionamento dos sujeitos como críticos; segundo, entre narrativas de racionalização do processo de consumo como o caminho moralmente adequado ao movimento crítico empreendido e práticas de consumo atravessadas por emoções positivas como o prazer e a valorização da ludicidade; e por fim, centralidade das emoções na construção de um complexo arranjo que busca acomodar os dois tipos de encaixe/acomodação anteriores, ou seja, entre a reivindicação de um corpo dotado de um saber natural e a construção deliberada de novas subjetividades nas relações com objetos e pessoas no contexto da moralidade crítica. Os dados apresentados foram produzidos a partir da experiência etnográfica realizada entre 2020 e 2022 com sujeitos participantes de um processo de “laboratório social” dedicado a discutir alternativas de consumo, parte de um movimento criado em função da pandemia de COVID-19.
Palavras-chave: Consumo Político; Anticapitalismo; Emoções; Afetos; Prazer.
EXPERIÊNCIAS ONLINE E OFFLINE NO CONSUMO DE MAQUIAGEM
Authors: Mesquita Márcia
Published: April 2024

Este presente artigo pretende analisar a relação entre consumo e internet a partir de etnografia realizada entre consumidoras brasileiras de maquiagem. O objetivo é trazer uma reflexão sobre como tal relação permite discutir as interseções entre os mundos do online e do offline que estão presentes na vida contemporânea hiper conectada. Os dados apresentados foram coletados durante pesquisa de doutorado em Antropologia, no período de 2015 a 2019. O trabalho de campo foi realizado de forma multissituada, acompanhando virtual e presencialmente os produtos e suas consumidoras, grupo este formado de mulheres cisgênero, das camadas médias com idades entre 20 e 50 anos. A pesquisa demonstra como um entrelaçamento de questões do digital e do presencial na forma de consumir os produtos e aplicá-los em seus rostos. Sendo assim, este fenômeno pode servir de comparação ou ponto de partida para se pensar como tal entrelaçamento vem impactando a vida social, desde na forma de se realizar uma pesquisa até nas ontologias contemporâneas.
Palavras-chave: Consumo; Internet; Maquiagem.
Transferencia del aprendizaje en la formación de profesorado de postgrado, efectos moderadores de sexo, edad y movilidad social
Authors: Roy Damarys , Céspedes Cristian , Aravena-Gaete Margarita , Fuentealba-Urra Sergio
Published: April 2024

La investigación tiene como objetivo medir la transferencia del aprendizaje en los egresados del programa de Magister en Docencia para la Educación Superior de la Universidad Andrés Bello, Chile, a través de tres constructos relacionados: competencia pedagógica, la calidad de la formación percibida, y la pertinencia de la formación recibida. Además, entregar una visión moderada por sexo, edad y movilidad social como factores sociodemográficos. Para ello se define una muestra por conveniencia de 333 participantes. Se utilizó como instrumento para recabar información, un cuestionario de autoreporte y se hizo un análisis cuantitativo de los datos. Los resultados confirman que el constructo de "transferencia" se puede establecer a partir de la competencia pedagógica, la calidad de la formación recibida y la pertinencia de la formación recibida. Así también que existe una relación significativa entre la calidad de la formación recibida y la movilidad social de sus egresados.
Benefits of Bambara Groundnut (Vigna subterranea) as a Source of Protein on Reproductive Function Related to Ghrelin-leptin in Female Mice Fed a Low Protein Diet
Authors: Gunanegara Rimonta Febby , Dewanto Agung , Sunarti
Published: April 2024

Background:

Low protein intake during pregnancy increases maternal mortality and
blood levels of leptin and ghrelin, the hormones that regulate energy balance, affecting energy intake
and body weight. The benefits of protein depend on the amount and type of amino acids that
make up the protein. The need for L-lysine amino acids in pregnant women is reported to increase,
especially at the end of pregnancy. Bambara beans contain high levels of the amino acid
L-lysine, so they can be used as a source of protein that contains high levels of L-lysine.

Objective:

This study evaluated the Bambara groundnuts (Vigna subterranea) supplementation effects
on reproductive function related to ghrelin-leptin in female mice fed a low protein diet.

Methods:

Quasi-experimental study with a control group employing 50 female mice divided into
five groups: normal protein diet (N), low protein diet (LP), low protein diet with 100 g (LP+100);
200 g (LP+200), and 300 g (LP+300) Bambara groundnut supplementation. After 2 months of intervention,
half of the mice in each group (n=25) were terminated, and blood samples were collected
to determine albumin, ghrelin, and leptin levels. The other half mice were mated to assess gestational
age.

Results:

Supplementation with Bambara groundnuts at 200 and 300 g/kg of feed increases protein
intake and ghrelin and leptin levels. The leptin/ ghrelin ratio in the group of mice supplemented
with Bambara groundnut at a dose of 300 g/kg feed shows a similar ratio to the normal group. Although
there were no significant changes in albumin levels in all groups, protein intake, ghrelin
and leptin levels were positively correlated with gestational age.

Conclusion:

Bambara groundnuts can reduce the negative effect of a low protein diet in female
mice. It is an excellent protein source that increases the leptin/ghrelin ratio to improve gestational
age.
The Relationship between Depression and Anxiety with Sexual Function in Postmenopausal Women: A Descriptive Correlational Study in Iran
Authors: Simbar Masoumeh , Nazarpour Soheila , Khorrami Mobina , Torkamani Zahra Jafari , Saghafi Reyhaneh , Alavi-Majd Hamid
Published: April 2024

Background:

Psychological factors can affect sexual function. Symptoms of depression
and anxiety may affect the sexual function of a woman after menopause.

Objective:

The study aimed to assess the correlation between depression and anxiety with the sexual
function of postmenopausal women.

Methods:

This was a descriptive correlational study on 255 postmenopausal women. For sampling, a
multi-stage method was used to recruit the eligible women from the health centers in Tehran-Iran. The
questionnaires for data collection were the Female Sexual Function Index (FSFI), Beck Depression
Inventory, Spielberger State-Trait Anxiety Inventory, and a socio-demographic questionnaire.

Results:

The mean age of the women was 52.60 ± 5.11 years. The mean total scores of FSFI, depression,
trait anxiety, and State anxiety were 54.05 ± 30.73, 19.00 ± 12.86, 40.73 ± 16.33, and
39.82 ± 16.57 percent, respectively. The female sexual dysfunction was reported in 65.5 percent of
subjects. The total scores of FSFI and its dimensions had a significant negative correlation with the
scores of depression, Trait-, and state anxiety. There was a negative correlation between the total
score of FSFI with the age of women and their husbands and the duration of menopause. A significant
positive correlation was found between FSFI with the education of women and the adequacy of
their family income. The occupations of the women and their husbands were also related to FSFI.
The multiple linear regression showed that state anxiety and depression are potential predictors of
FSFI.

Conclusion:

Depression and anxiety are associated with decreased sexual function in postmenopausal
women. Therefore, adopting appropriate policies is necessary to reduce depression and anxiety
among postmenopausal women to promote their mental health and sexual function.

conclusion:

Depression and anxiety are associated with decreased sexual function in postmenopausal women. Therefore, adopting appropriate policies are necessary to reduce depression and anxiety among postmenopausal women to promote their mental health and sexual function.
Research on Electro-hydraulic Servo Valve Structure and Control Algorithm of System with Servo Valve
Authors: LI Jianying , Wang Zhao , Guo Qi , Jiang Liqun , Zhang Xiaoqiu
Published: April 2024

Background:

With the continuous progress of electronic information technology, people
have begun to study the combination of electronic information technology and hydraulic technology
to achieve more accurate and flexible control. Electro-hydraulic servo technology was thus developed.
Much attanetion has been paid to electro-hydraulic servo valve,a key component of electrohydraulic
servo technology.

Objective:

The number of stages of the electro-hydraulic servo valve, the structure form of the electro-
hydraulic servo valve hydraulic front stage, the feedback form of the electro-hydraulic servo
valve, the output form of electro-hydraulic servo valve, and the control algorithm based on the application
of electro-hydraulic servo valve are analyzed and commented respectively. Combined with
associated patents, the research direction and hot topics of electro-hydraulic servo valves are analyzed.

Method:

The electro-hydraulic servo valves were briefly classified; and then the problems of different
types of valves were discussed in depth.

Results:

By analyzing the problems of electro-hydraulic servo valves, the problems of how to improve
the control accuracy, response speed, anti-interference ability, service life and cost reduction
of electro-hydraulic servo valves are analyzed comprehensively, and the future development prospect
of electro-hydraulic servo valves is predicted and outlooked.

Conclusion:

Analyzing and discussing the existing hot issues of electro-hydraulic servo valves helps
to update and change the electro-hydraulic servo valves, and makes corresponding references for the
subsequent research of electro-hydraulic servo valves.
Evaluation of strawberry supply chain efficiency level with data envelopment analysis (DEA) model approach in Lumbung Stroberi, Pandanrejo Village, Batu City
Authors: Suprapti Ningsih Eka Indah , Maulidah Silvana , Haryati Novi , Zahran Nurirrozak Muhamad
Published: April 2024

Supply chain activities are one of the considerations for business actors. However, several problems within these activities lead to inefficiencies in the performance of supply chain actors. This study aimed to describe the strawberry supply chain system and analyze its efficiency level at Lumbung Stroberi, and evaluate supplier selection based on the supply chain performance efficiency results. The respondents of this study were five partner farmers who supplied Lumbung Stroberi and were interviewed directly using questionnaires. Data analysis was conducted using two methods, namely descriptive analysis and quantitative analysis using the Data Envelopment Analysis (DEA) model approach. The study’s findings revealed the occurrence of supply chain activities from suppliers to Lumbung Stroberi and the efficiency level of the strawberry supply chain, with three suppliers operating efficiently. This supplier selection based on supply chain performance efficiency results is crucial evaluation for maintaining the efficient suppliers and improving the inefficient ones.
Bioconversion of black soldier fly (Hermetia illucens) on agricultural waste: Potential source of protein and lipid, the application (A mini-review)
Authors: Hidayat Nur , Anggarini Sakunda , Sabrina Sunyoto Nimas Mayang , Enggar Fitri Loeki , Suhartini Sri , Ainur Rohma Novita , Elviliana Elviliana , Aji Arif Setyawan Sang , Fitriana Subekti Indah , Alya Namira Anggi , Waladatun Nafi’ah Riris , Nur Afifah Firdiani , Putra Agus Pratama Andhika
Published: April 2024

Hermetia illucens, well-known as black soldier fly (BSF), is an insect easily found in subtropical and tropical regions. It contains high protein and lipids. BSF is known as one of the biological agents consuming organic components, thus having a high potential to overcome organic waste problems. BSF has promising advantages due to its long development time in the larval stage (compared to other flies) and its ability to self-separate from organic waste. BSF with large protein and lipid content can substitute the commonly used protein source in aquaculture, poultry and livestock compound diet formulation, which can be an option to overcome limited sources of future food and feed insecurity. This review analyses the latest study of bioconversion using BSF from the viewpoint of nutrient composition, degradation rate and biomass results from different feed treatments. Various feed and growth mediums have been studied to obtain high protein and lipid biomass. Hopefully, the information will provide new research directions and solutions for converting agro-industrial waste using bioconversion with BSF.
Valorization of oil palm empty fruit bunches into activated carbon: A mini-review
Authors: Putra Agus Pratama Andhika , Ainur Rohma Novita , Elviliana Elviliana , Waladatun Nafi'ah Riris , Yulis Setyawan Hendrix , Sabrina Sunyoto Nimas Mayang , Fatriasari Widya , Suhartini Sri , Hoon Jung Young , Idrus Syazwani , Melville Lynsey
Published: April 2024

This paper aimed to comprehensively review the potential valorization of oil palm empty fruit bunches (OPEFBs) into activated carbon and its potential application. Activated carbon is carbon processed through dual phases, including carbonization and activation. Firstly, this process converts biomass into carbon thermally with zero to little oxygen conditions. Next, the carbon needs to be activated to stimulate the formation of pores and reduce impurities. The activated carbon’s quality is influenced by the activation process, which can be done physically, chemically, or physiochemically. Activated carbon has an amorphous structure and abundant internal pore structure, thus increasing the surface area. In Indonesia, the quality of active carbon is regulated by Indonesian National Standards or SNI 06-370-1995. The factors influencing the activation step include activator agent type, activator agent concentration, activation ratio and time, etc. . Generally, activated carbon can be widely applied to various sectors, such as agriculture (i.e., slow-released fertilizer, fertilizer, etc.), waste treatment (i.e., adsorbent, activator in anaerobic digestion/AD, bioremediation, etc.), gas purification, ceramic membrane, etc. However, further in-depth investigation is required to determine potential scaling-up and commercialization.
SECONDARY METABOLITE PROFILE IN STEM AND ROOT OF KEJI PLANT (Staurogyne elongata (Blume) Kuntze)
Authors: Safitri Hana , Malik Abdul , Mukaromah Arnia Sari
Published: April 2024

Keji plant (Staurogyne elongata (Blume) Kuntze) is an herbal medicinal plant that is often found on the islands of Java to Sumatra. The leaves and roots of keji plants (S. elongata) are used by the community as diuretic drugs and increase blood pressure and are believed to treat bladder stones, kidney stones, and joint problems. However, research on secondary metabolites in the stems and roots of keji plants has never been done. The aims of the study were to identify the secondary metabolites content and marker compounds in the stems and roots of keji plants. The research stages were drying and pollination of samples, extraction, and analysis using Gas Chromatography-Mass Spectrometry (GC-MS). The results showed that the compounds in the stem were nine secondary metabolite compounds from the phenol, terpenoid, alcohol and ester group. Meanwhile, secondary metabolite compounds in the roots of keji plants were ten compounds from coumaran, phenols, and ester group. The marker compounds in the stem were phenol, 2,2'-methylenebis[6-(1,1-dimethylethyl)-4-methyl- while the marker compounds in the roots were octadecanoic acid, 2-hydroxy-1-(hydroxymethyl)ethyl ester.
Literatura, komunikacja i relacje międzyludzkie – Powrót – zbiór opowiadań Kazimierza Orłosia
Authors: Krzemiński Maciej
Published: April 2024

Artykuł poświęcony jest twórczości Kazimierza Orłosia. Zagadnienia relacji międzyludzkich, sposobów komunikowania postaci literackich oraz obrazu moralnej kondycji społeczeństwa prezentowane są głównie w odniesieniu do tomu opowiadań Powrót. W tekście artykułu podjęto próbę uchwycenia stałych motywów obecnych w twórczości autora analizowanych utworów.
Pelaksanaan kebijakan zonasi sekolah dan dampaknya terhadap kualitas sekolah pada jenjang sekolah menengah pertama: Studi kasus di Kabupaten Sleman Yogyakarta
Authors: Sidik Fajar
Published: April 2024

Mulai 2017, pemerintah pusat memberlakukan kebijakan zonasi sekolah untuk mengatasi problem ketimpangan kualitas pendidikan di Indonesia. Kebijakan zonasi sekolah diyakini pemerintah pusat mampu mewujudkan pemerataan kualitas pendidikan antar sekolah dan berkeadilan. Berangkat dari pandangan ideal tersebut, metode studi evaluasi kebijakan digunakan untuk menilai sejauhmana kebijakan zonasi sekolah mampu mencapai tujuannya, yaitu pemerataan kualitas pendidikan antar sekolah. Berbeda dengan penelitian sebelumnya yang lebih menyorot sekolah-sekolah negeri ‘favorit’, studi ini memberikan fokus perhatian pada sekolah-sekolah ‘non-favorit’ pada jenjang sekolah menengah pertama di Kabupaten Sleman. Dalam proses evaluasi kebijakan, metode kuantitatif deskriptif digunakan untuk menilai kualitas input sekolah antara sebelum dan sesudah kebijakan zonasi sekolah diterapkan. Penelitin ini menggunakan data dokumen berupa nilai input siswa berbasis nilai akademik siswa pada waktu sebelum dan sesudah kebijakan zonasi sekolah diterapkan. Data dokumen ini kemudian dianalisis menggunakan tahap seleksi data, penyajian data, dan pengambilan kesimpulan. Studi ini menemukan bahwa sekolah-sekolah yang menempati rangking 15 terbawah atau ‘non-favorit’, dari sebelum dan sesudah kebijakan zonasi sekolah diterapkan, posisi distribusi input sekolah masih tidak berubah.Starting in 2017, the central government implemented a school zoning policy to address the problem of inequality in the quality of education in Indonesia. The government believes that the school zoning policy can realize an equal and equitable quality of education between schools. Departing from this ideal view, the policy evaluation study method is used to assess the extent to which school zoning policies are able to achieve their objectives, namely equal distribution of education quality between schools. In contrast to previous research, which focused more on 'favorite' state schools, this study focuses on 'non-favorite' schools at the junior high school level in Sleman Regency. In the policy evaluation process, descriptive quantitative methods are used to assess the quality of school input before and after the school zoning policy is implemented. This research uses document data in the form of student input scores based on students' academic scores before and after the school zoning policy was implemented. This document data is then analyzed using the stages of data selection, presentation, and conclusion. This study found for schools ranked in the bottom 15 'non-favorites' before and after the school zoning policy was implemented, the position of the school input distribution remained unchanged.
Asesmen kebijakan sekolah ramah anak di sekolah dasar
Authors: Nurhayati Riana , Hajaroh Mami , Purwastuti Lusila Andriani , Rohman Arif
Published: April 2024

Penelitian ini bertujuan  untuk  mengklasifikasikan dan mengkategorikan sekolah dasar yang mengimplementasikan kebijakan sekolah ramah anak di kabupaten Bantul Yogyakarta. Pendekatan penelitian merupakan penelitian kuantitatif dengan jenis survei. Teknik pengambilan sampel menggunakan simple random sampling dengan jumlah responden sebanyak 356 yang terdiri dari kepala sekolah dan guru. Teknik pengumpulan data menggunakan angket dengan skala likert, angket disebarkan melalui google form untuk membantu peneliti menjangkau seluruh lokasi. Instrumen angket menggunakan model evaluasi CIPP (context, input, process, product). Analisis data menggunakan statistik desktiptif dalam bentuk persentase.Hasil penelitian menunjukkan bahwa kategori dari hasil asesmen evaluasi kebijakan sekolah ramah anak di sekolah dasar kabupaten Bantul DIY yang menerapkan kebijakan sekolah ramah anak baik itu negeri dan swasta termasuk dalam kategori sangat baik. Hasil analisis menunjukkan bahwa dari 144 SD Negeri dan 30 SD swasta terdapat 130 sekolah (37%) yang menerapkan Sekolah Ramah Anak termasuk ke kategori “Sangat Baik”, sebanyak 109 sekolah (31%) yang menerapkan SRA termasuk ke kategori “Baik”, sebanyak 76 sekolah (21%) yang menerapkan SRA termasuk ke kategori “Cukup”, sebanyak 34 (10%) sekolah ramah anak yang termasuk dalam kategori “Kurang Baik”, dan 7 sekolah (2%) termasuk ke kategori “Tidak Baik” pelaksanaannya.This research aims to classify and categorize elementary schools implementing child-friendly policies in the Bantul district, Yogyakarta. The research approach is quantitative research with a survey type. The sampling technique used simple random sampling with a total of 357 respondents consisting of school principals and teachers. The data collection technique uses a Likert scale questionnaire distributed via Google Forms to help researchers reach all locations. The questionnaire instrument uses the CIPP (context, input, process, product) evaluation model. Data analysis uses descriptive statistics in the form of percentages. The research results show that the category of evaluation results of child-friendly school policies in elementary schools in Bantul DIY district which implement child-friendly school policies, both public and private, is included in the excellent category. The results of the analysis show that of the 144 public elementary schools and 30 private elementary schools, there are 130 schools (37%) that implement Child-Friendly Schools, including the "Very Good" category, as many as 109 schools (31%) that implement SRA fall into the "Good" category, as many as 76 schools (21%) that implemented SRA were included in the "Fair" category, 34 (10%) child-friendly schools were included in the "Poorly Good" category, and seven schools (2%) were included in the "Not Good" category.
Transformasi makna budaya tradisi nguras enceh pada generasi milenial
Authors: Qurrota A'yun Bintan Auliya , Aini Syarifah Nur , Assyihabi Rahmatullah , Setiawan Benni
Published: April 2024

Arus globalisasi dan modernisasi yang masif disertai dengan lemahnya rasa cinta tanah air membuat kebudayaan dan jati diri bangsa terkikis. Kebudayaan yang sudah berkurang peminatnya terutama mdari generasi muda ialah  tradisi Nguras Enceh yang berada di Makam Raja Raja Imogiri. Permasalahan tersebut berkaitan dengan minimnya komunikasi budaya berupa komunikasi yang sempat terhenti atau berjalan tidak maksimal dikarenakan perbedaan generasi dan perbedaan penyampaian. Jenis penelitian yang digunakan dalam penelitian ini adalah kualitatif dengan subjek penelitian yang terlibat ini adalah para abdi dalem yang bekerja di Makam Imogiri, Bantul dan generasi milenial yang bertempat tinggal di wilayah sekitar Makam Imogiri Bantul. Sedangkan teknik pengumpulan data yang dilakukan pada penelitian ini, yaitu observasi, wawancara, dan dokumentasi. Selain itu, model analisis data yang digunakan adalah model analisis interaktif Milles dan Hubberman berupa reduksi data, penyajian data, dan kesimpulan/verifikasi. Penelitian ini akan mengeksplorasi mengenai pemaknaan generasi muda terhadap Tradisi Ngurah Enceh, peran generasi muda yang berada di daerah sekitar Makam Raja-Raja Imogiri pada Tradisi Nguras Enceh, dan communication gap yang terjadi antara abdi dalem dengan pemuda di sekitar Makam Raja-Raja Imogiri. The massive waves of globalization and modernization, coupled with a weakened sense of patriotism, have eroded the culture and national identity of the nation. One of the diminishing cultural traditions, especially among the younger generation, is the Nguras Enceh tradition held at the Imogiri Royal Cemetery. This issue is related to the lack of cultural communication, where communication has been halted or not maximized due to generational differences and differences in communication styles.The research conducted adopts a qualitative approach involving subjects such as the palace servants (abdi dalem) working at the Imogiri Cemetery in Bantul and the millennial generation residing in the surrounding area of Imogiri Cemetery in Bantul. Data collection techniques in this study include observation, interviews, and documentation. Additionally, the data analysis model used is the interactive analysis model by Milles and Hubberman, involving data reduction, data presentation, and conclusion/verification stages. This research aims to explore the meaning of the Ngurah Enceh tradition for the younger generation, the role of the younger generation in the vicinity of the Imogiri Royal Cemetery in the Nguras Enceh tradition, and the communication gap that exists between the palace servants and the youth around the Imogiri Royal Cemetery.
Degenerative Cervical Myelopathy Awareness in Primary Care: UK National Cross-Sectional Survey of General Practitioners (Preprint)
Authors: Rufus-Toye Remi M , Rafati Fard Amir , Mowforth Oliver D , McCarron Luke V , Chan Kayen , Hirayama Yuri , Smith Emma K , Veremu Munashe , Davies Benjamin M , Brannigan Jamie F M
Published: April 2024

BACKGROUND

Degenerative cervical myelopathy (DCM) is a progressive neurological condition, characterized by spinal cord injury secondary to degenerative changes in the spine. Misdiagnosis in primary care forms part of a complex picture leading to an average diagnostic delay of 2 years. This leads to potentially preventable and permanent disability. A lack of awareness secondary to deficits in postgraduate education may contribute to these delays.

OBJECTIVE

This study aims to assess the awareness of DCM in the setting of general practice.

METHODS

General practitioners completed a quantitative web-based cross-sectional questionnaire. The 17-item questionnaire captured data regarding demographics, subjective awareness, and objective knowledge. The questionnaire was disseminated via professional networks, including via practice managers and senior practice partners. Incentivization was provided via a bespoke DCM fact sheet for those that completed the survey.

RESULTS

A total of 54 general practitioners representing all 4 UK nations responded to the survey. General practitioners most commonly self-assessed that they had “limited awareness” of DCM (n=24, 51%). General practitioners felt most commonly “moderately able” to recognize a case of DCM (n=21, 46%). In total, 13% (n=6) of respondents reported that they would not be at all able to recognize a patient with DCM. Respondents most commonly reported that they were “moderately confident” in their ability to triage a patient with DCM (n=19, 41%). A quarter of respondents reported no prior introduction to DCM throughout their medical training (n=13, 25%). The mean score for knowledge-based questions was 42.6% (SD 3.96%) with the lowest performance observed in patient demographic and clinical recognition items.

CONCLUSIONS

General practitioners lack confidence in the recognition and management of DCM. These findings are consistent with the diagnostic delays previously described in the literature at the primary care level. Further work to develop and implement educational interventions to general practitioner practices is a crucial step to improving patient outcomes in DCM.
Production and Optimization of Oleic Acid Ethyl Ester Synthesis Using Lipase From Rice Bran (Oryza sativa L.) and Germinated Jatropha Seeds (Jatropha curcas L.) by Response Surface Methodology
Authors: Prastowo Indro , Hidayat Chusnul , Hastuti Pramudji
Published: April 2024

Recently, the fatty acid ethyl ester has been synthesized in place of fatty acid methyl ester since ethanol has been more renewable. In this research, oleic acid ethyl ester (OAEE) was synthesized using germinated jatropha seeds (Jatropha curcas.L) and rice bran (Oryza sativa) as source of lipase. The objective of the research was to optimize the synthesis conditions using Response Surface Methodology. Factors, such as crude enzyme concentration, molar ratio of oleic acid to ethanol, and the reaction time, were evaluated. The results show that lipase from germinated jatropha seeds had the hydrolitic and esterifi cation activity about 6.73 U/g and 298.07 U/g, respectively. Lipase from rice bran had the hydrolitic and esterifi cation activity about 10.57 U/g and 324.03 U/g, respectively. The optimum conditions of esterifi cation reaction using germinated jatropha seed lipase as biocatalyst were crude enzyme concentration of 0.31 g/ml, molar ratio of oleic acid to ethanol of 1 : 1.81, and reaction time of 50.9 min. The optimum conditions of esterifi cation reaction using rice bran lipase were crude enzyme concentration of 0.29 g/ml, molar ratio of oleic acid to ethanol of 1 : 2.05, and reaction time of 58.61 min. The obtained amounts of OAEE were 810.77 μmole and 626.92 μmole for lipases from rice bran and germinated jatropha seed, respectively.
Human Origin Lactobacillus casei Isolated from Indonesian Infants Demonstrating Potential Characteristics as Probiotics in vitro
Authors: Widodo W. , Taufiq Tiyas Tono , Aryati Ety , Kurniawati Asih , Asmara Widya
Published: April 2024

The aim of this experiment was to isolate and identify Lactic Acid Bacteria (LAB) from infant faecesand subsequent evaluation of its potential probiotics. LAB was isolated from faeces of infants who consumedbreast milk as the only source of diet on L-cysteine-supplemented MRS Agar, and incubated on 37oC for 48hours. Colonies grew on this media were then identifi ed based on morphological, physiological and molecularapproaches. Morphological and physiological identifi cations based on Gram staining, shape, motility, sporeformation, catalase, CO2 and NH3 production, and the ability to grow on temperature at 10oC and 45oC.Molecular identifi cation based on the amplifi cation of 16S rRNA gene. The potential application of selectedisolates for probiotics was evaluated based on the ability to grow on media with low pH and the additionof 0.5% bile salts, the ability to inhibit the growth of pathogenic Bacillus cereus and Eschericia coli, and in vitroadherence ability. On the basis of morphological, physiological and molecular analysis of 16S rRNA gene, itwas concluded that the selected isolate 1AF was a strain of Lactobacillus casei. Evaluation of probiotic in vitro showed that 60.4% of cells were resistant to pH 2.0 for 90 minutes. Survival of isolate 1AF after growing at0.5% bile salts was 70.8%. The selected isolate 1AF showed the ability to inhibit the growth of Eschericia coli and Bacillus cereus with inhibitory zone of 12.00±1,00 and 15.33±1.53 mm, respectively. In vitro study on theadherence value of isolate to solid plate was found at 46.5%. It is concluded that Lactobacillus casei isolate 1AFis a potential candidate as probiotics and subject to further in vivo evaluation.
An Analysis of Translation of Literary Texts under the Guidance of Adaptation Theory— A Case Study of White Teeth (Excerpt)
Authors: Simiao Qin
Published: April 2024

As an important part of cross-cultural communication, the significance of translating literary works accurately is self-evident. In specific translation practice, how to clear cultural barriers, resolve cultural misunderstandings, and faithfully convey meanings have always been challenges for translators. Literary texts often have a large number of long and difficult sentences while Adaptation Theory advocates conforming to the linguistic characteristics and style of the translated text, which has a certain guiding effect on the translation of English-Chinese literary texts. Based on the translation practice of White Teeth (excerpts), this paper analyzes the specific role of Adaptation Theory in translation practice, with a view to providing specific references for the translation of literary texts.