bluuebunny/crossref_metadata_2025 huggingface dataset:
USE OF NUMBERED HEADS TOGETHER TECHNIQUE TO IMPROVE READING COMPREHENSION OF JUNIOR HIGH SCHOOL STUDENTS
Authors: Herawati Titin
Published: September 2024

The purpose of this research was to find out whether Numbered Heads Together technique can improve studentsâ€™ reading comprehension at seventh grade studentsâ€™ of SMPN 7 Tarakan. This research was in the form of Pre-experiment. The researcher tried to find out the differences before and after teaching by numbered heads together technique. The subject of this study was students in grade 7-2 which consisted of 29 students at SMPN 7 Tarakan in academic year 2018/2019. The instruments were reading tests that included pre-test and post test. To analyze, the researcher used descriptive analysis and SPSS 22.0 for statistical analysis. The result of this study indicated that there were differences between pre-test and post test. It was proven by the results of the students mean score. The studentsâ€™ mean score in pre-test were 45,51 and 54,13 at the post test. It means the improvement of the studentsâ€™ mean score was 8,62. The score in post test was higher than the pre-test scores. It showed that there was a significant difference from studentsâ€™ reading score on pre-test and post test. The results of the paired sample test indicate that the t-test (2.819) was higher that the t-table (2.048). In this research, the researcher found there was significant differences from the use of NHT technique in learning. This technique was able to improve studentsâ€™ enthusiasm, helped students understand the text easily, and builded students critical thinking. Then it can be concluded that the NHT technique has proven to be an effective technique for increasing reading comprehension in seventh grade studentsâ€™ of SMPN 7 Tarakan.Â
IMPROVING READING COMPREHENSION OF SENIOR HIGH SCHOOL STUDENTS THROUGH SCANNING AND SKIMMING TECHNIQUES
Authors: Rahmawati Rahmawati
Published: September 2024

The purpose of this research was to find out the students reading comprehension improvement through scanning and skimming techniques for students in SMA Muhammadiyah Tarakan. This research was quasi experiment. In this research, the researcher used two class. The researcher compared control class and experiment class whether there was any difference and improvement before and after giving treatment. The control class was given by skipping and paraphrasing techniques, meanwhile experiment class was given by scanning and skimming techniques. The subject of this study were XI IIS 3 as the experiment class there were 27 students and XI IIS 2 as the control class there were 26 students. The instruments were reading test that included pretest and posttest. Besides that, the researcher used descriptive analysis to analyze the data and SPSS veersion 22.0 for inferential analysis. The result of this research indicated that there were differences between pretest and posttest in both of the class. It was proven by the result of the students mean score. The students mean score in experiment class of pretest was 47,59 and posttest was 63,70. On the other hand, the students mean score in control class of pretest was 55,19 and posttest was 60,00. It can be seen from both of the class were have improvement. Eventhough, the treatment was different, but the comparison between control and experiment class, the experiment class was got higher improvement after giving the treatment by using scanning and skimming techniques, ratherthan the control class that was given by using skipping and paraphrasing techniques. It means that in experiment class the improvement of the students mean score was 16,11 point. The result of independent sample Ttest in posttest showed that Ttest (1,707) higher than Ttable (1,675). The result of this research there was the students reading comprehension was improve after using scanning and skimming techniques. Then it can be concluded that scanning and skimming can improve the students reading comprehension for studnts in SMA Muhammadiyah Tarakan.
THE IMPACT OF USING PROJECT-BASED LEARNING METHOD TO IMPROVE WRITING SKILLS ON NARRATIVE TEXT OF THE EIGHTH-GRADE STUDENTSâ€™ OF SMP NEGERI 7 TARAKAN
Authors: Dhea P Errita , Rianto Agus , Astuti Crisyanti Windi , Nurdiana Nurdiana
Published: September 2024

The objective of this research was to find out whether there was any significant difference in studentsâ€™ writing skill before and after being taught using the Project Based Learning method in learning narrative text at the eighth-grade students of SMP Negeri 7 Tarakan. The design of this research was pre-experimental research. The population in this research was all of the eighth grade students at SMP Negeri 7 Tarakan. The sample in this research was 31 students. The sample was chosen by using a purposive sampling technique. The class for treatment was VIII 3. It consisted of 31 students. The steps in this research were pre-test, treatment, and post-test. In the pre-test, the students were asked to answer the writing test. After giving the pre-test, the researcher gave treatment. The treatment class was taught by using Project Based Learning method. After giving the treatment, students were asked to answer the writing test in post test. In analysing the data, the researcher was used paired sample t-test in SPSS 24.0. The result of this study showed that there was different mean score between pre-test and post-test. It was proven by the result of studentsâ€™ mean score from pre-test was 48.00 and 65.29 in the post test. It indicates that the improvement of the studentsâ€™ mean score was 17.290. The result t-value is higher than t-table (7.478 2.042). It proves that the studentsâ€™ writing skill in narrative text improved after giving the treatment. The result of sig (2 tailed) 0.000 is lower than 0.05, it means that the Project Based Learning method can give any contribution to the studentsâ€™ writing skill. It can be concluded that using Project Based Learning method is impact to improve the studentsâ€™ writing skill in narrative text at the eighth-grade students of SMP Negeri 7 Tarakan.
AN ANALYSIS OF STUDENTSâ€™ MOTIVATION IN STUDYING ENGLISH AT SMPN 7 TARAKAN
Authors: Uka Sarti , Rafiqa Syarifa , Winiyanti Rita
Published: September 2024

Motivation is one of the most influential factors in achieving a target language. The purpose of this research was to determine the level of motivation in studying English at SMPN 7 Tarakan, to assess if the students had intrinsic or extrinsic motivation. This research was a descriptive research method and the population for this research was the eighth grade of SMPN 7 Tarakan with class VIII-1 was selected as a sample from random sampling technique. Furthermore, the data was collected using a questionnaire instrument consisting of 20 questions. The result of this research shows that the total mean score of extrinsic motivation is higher than the total mean score of intrinsic motivation (3,583,85). It means that class VIII-1 as a sample had higher extrinsic motivation than intrinsic motivation in studying English. In other words, students are well motivated by extrinsic motivation, but also intrinsic motivation is still at a moderate level.Â
THE USE OF AUGMENTED REALITY (AR) MEDIA TO ENHANCE STUDENTSâ€™ VOCABULARY MASTERY AT SEVENTH GRADE STUDENTS OF SMP NEGERI 7 TARAKAN
Authors: Natalia Merry Christin , Fitriawati Fitriawati
Published: September 2024

This research aimed to find out the average difference of Augmented Reality students' learning results in enhancing vocabulary mastery understanding about describing animals. The subjects of this research were 26 students from grades 7-6 of SMP Negeri 7 Tarakan in the academic year 2021/2022 using the pre-experimental method. This was research with One Group Pretest-Posttest design. Sample selection using Purposive Sampling. The instruments were a vocabulary test in the pretest and posttest to measure studentsâ€™ achievement in the learning process during treatments. The hypothesis was tested using Parametric Paired Sample T-Test. Paired Sample T-Test showed that the average students score in Pretest and Posttest. This is evidenced by the results of the average score of students. The average score in the Pretest was 53,12 and the average score in the posttest was 72,81. The results show the posttest was higher than the Pretest value. This shows that there was a significant difference in the students' vocabulary mastery at the pretest and posttest. Other than that, the value of N Gains both pre-test and post-test showed 0.42 is categorized as Normal. In addition, the paired sample t-test test results showed that -t-test (-7.010) is smaller than -t-table (-2.060). Based on the test results, the researchers concluded that the use of Augmented Reality media was proven to be effective in enhancing vocabulary comprehension learning outcomes in describing animals in the seventh grade of SMP Negeri 7 Tarakan
THE FACTOR OF SPEAKING PROBLEMS FACED BY THE ELEVENTH GRADERS OF SMA NEGERI 1 TANJUNG SELOR
Authors: Juliyati Patri , Winarno Winarno , Arifin Arifin , Widhianty Devy
Published: September 2024

The purpose of the research was to describe the results of the speaking problem factors of class XI students at SMA Negeri 1 Tanjung Selor. The design of the research was a descriptive. The subject was taken by random sampling technique. The researcher took 28 students of class XI with each representative from 8 classes. To collect the data, the researcher used documentation, questionnaire, and interview. Based on the results of the questionnaire showed that 1) there were 53.6% of students answered the lack of proper vocabulary selection, 2) 42.9% of students answered less confident in pronunciation, 3) 35.7% of students answered that they did not use proper grammar, and 46.4% of students answered that they could not speak English well. The results of interview with the teacher of English and the students showed that there were several problems faced by the students namely weak of grammar, weak of pronunciation in English, not fluent in speaking English, lack of vocabulary, difficulty compiling English sentences, lack of practice speaking at home and at school, embarrassed by wrong pronunciation and fear of being laughed at by friends. Based on the result of the research showed there were some factor of speaking problems faced by the eleventh graders of SMA Negeri 1 Tanjung Selor namely less of confidence, weak of grammar, weak of pronunciation in English, not fluent in speaking English, lack of vocabulary, difficulty compiling English sentences, lack of practice speaking.
ANALYSIS NINTH GRADE STUDENTSâ€™ LEARNING STYLE AT SMPN 9 TARAKAN
Authors: Alya Nurul Rezky , Setyawan Farid Helmi , Effendi Norman
Published: September 2024

This study aimed to determine studentsâ€™ learning style in ninth grade at SMPN 9 Tarakan. This research is a qualitative descriptive research. The targets of this study were teachers and students of SMPN 9 Tarakan. Data collection techniques used questionnaires and observations.Â  From the data collected, based on the results of data analysis, it stated that class IX students who were involved in learning process tend to have a visual learning style. Students who had a visual learning style of 57%, auditory percentage of 13%, and kinestics of 30%. So from the results of this study it can be concluded that class XII students who take online learning tend to have a visual learning style.
BREAKING THE ICE IN THE CLASSROOM: USING ICE BREAKING IN THE TEACHING AND LEARNING PROCESS
Authors: Fitria Tira Nur
Published: September 2024

This research describes ice-breaking (ice breaker) and the importance of ice-breaking in the teaching and learning process. This research is library research. The analysis shows that using ice-breaking requires preparation and planning, including materials, methods, and media. Ice-breaking usually can be used as warm-up activity at the beginning of learning. Ice-breaking must generate favorable impressions of students. Besides, the teacher must have strong impulses when delivering ice-breaking, must be sensitive to the classroom environment, adaptable to the studentâ€™s condition, and facilitate the students' needs. The teacher has the authority to vary or modify the game varieties of ice breaking while ensuring the duration needed. The ice-breaking is not only creating a joyful environment but also providing meaning and relevance to the subject material being presented.Â  Icebreaker activities can be an effective way to create a comfortable and interactive learning environment in the classroom. They break the â€˜iceâ€™ to create a relaxed and positive atmosphere, allow students to feel comfortable, interact with classmates, open their minds to a more effective learning process, and solve students' concentration, absorption, learning interests, attention, motivation even learning outcomes. Ice-breaking activities can be applied to all subjects and can be combined with learning methods or other game techniques. The teacher as a learning facilitator may not leave the learning principles including learning how to learn, how to think, how to do, and how to live together. For teachers, preparing ice breaking in learning is the same as upgrading teachersâ€™ pedagogical, personal, social, and professional competencies.
TEACHERSâ€™ STRATEGIES IN TEACHING READING COMPREHENSION TO SEVENTH-GRADE STUDENTS OF SMPN 10 TARAKAN
Authors: Abraham Abraham , Fitriawati Fitriawati , Kusmaryani Woro
Published: September 2024

This research aims to determine the methods for incorporating reading comprehension skills into classroom instruction and identify the specific strategies teachers employ. This study employs a descriptive qualitative approach. The participants of this study were English instructors at SMP Negeri 10 Tarakan, comprising a single teacher. The primary objective of this study is to examine the instructional techniques teachers employ to enhance reading comprehension skills among students in the classroom setting. The research data collection was conducted through documentation, observation, and interviews. Based on the observations and conversations, the instructor employs two specific strategies: scaffolding and QARs (Question-Answer Relationship).Â
PROBLEMS FACED BY STUDENTS IN SPEAKING ENGLISH
Authors: Wardhani Wira Mukti , Rafiqa Syarifa , Makmur Selamet
Published: September 2024

English is an international or global language that individuals from different regions or countries use to help them understand and interact with one another. Indonesian is the national language of Indonesia. One of the language skills that students need to be proficient is speaking, as speaking is the most crucial aspect of the objectives for learning Indonesian. The first goal of this study is to determine students' difficulties in speaking English, and the second is to look for possible remedies. In this research, a case study methodology was carried out. Students of class XII at one of public senior high schools in Tarakan served as the research subjects. Of the 36 students, only 28 per cent (10) were deemed to speak. This study revealed that students' challenges when speaking English are primarily related to a deficiency of vocabulary, challenging grammar, and challenging pronunciation.
IMPROVING SEVENTH GRADERSâ€™ VOCABULARY USING FLASHCARDS AT SMP NEGERI 13 TARAKAN
Authors: Noftalia Noftalia , Rafiqa Syarifa , Nur Asiah Nur Asiah
Published: September 2024

English language learners possess eight essential language skills: reading, writing, and speaking. When learning English, a thorough understanding and effective use of terminology is necessary right from the start. This study examines flashcards' efficacy in English classroom education, particularly for seventh-grade students. The research included a qualitative approach and involved a literature review. According to the study's findings, utilising this specific card game as an educational tool can provide significant advantages and aid teachers in delivering instruction more effectively. Furthermore, it possesses the capacity to improve student's proficiency in the English language and to motivate pupils to participate actively in classroom activities. This will facilitate favourable interactions between professors and students and between students and the learning medium.Â
THE ANALYSIS OF STUDENTS' ERROR IN STRESS PLACEMENT IN ENGLISH PRONUNCIATION OF THE FOURTH SEMESTER STUDENTS AT THE ENGLISH EDUCATION DEPARTMENT IN BORNEO TARAKAN UNIVERSITY
Authors: Pebriani Indah , Rianto Agus
Published: September 2024

The purpose of this research was to find out the error in stress on English by students in the fourth semester of the English Education Department, University of Borneo Tarakan. Purposive sampling was used to choose 30 English Language Education students who were enrolled in the English Morphology course as the studyâ€™s participants. This research used a qualitative descriptive method. The data was gathered via a reading test by having the researcher record participantsâ€™ accented speech and compare it to the eighth edition of the Oxford Advanced Learnerâ€™s Dictionary. The results of the reading test were presented in the form of percentages with a descriptive explanation. The results of this research showed that the students made the most mistakes in pronouncing words with four syllables and that the students had a good level of English pronunciation knowledge. The study also discovered that the number of syllables had an impact on the frequency of errors, as evidenced by data that revealed that more errors were made in words with more syllables than before. Misplaced word stress and double-stressed words were the most common causes of errors in this research.
DESIGNING SUPPLEMENTARY READING E-WORKSHEET BASED ON SDGs (SUSTAINABLE DEVELOPMENT GOALS) FOR TENTH-GRADE STUDENTS AT SMAN 3 TARAKAN
Authors: Alya Nurul Rezky , Arifin Arifin , Rafiqa Syarifa
Published: September 2024

This study aims to design a supplemental reading e-worksheet based on SDGs (sustainable development goals) with adequate materials and an attractive design for the tenth-grade students at SMAN 3 Tarakan. This research and development research used the ADDIE Model, which consisted of five stages: (1) Analysis, (2) Design, (3) Development, (4) Implementation, and (5) Evaluation. The subjects of the research were 35 students of Class X-E in SMAN 3 Tarakan. This research included two expert validators: the media expert and material expert validators. The results indicated that validation by the material expert was 86% included the excellent category and the material expert were 100% with the very good type for the supplemental reading e-worksheet based on SDGs (sustainable development goals). The evaluation test results were divided into two: the small evaluation test was 81% (good category), and the field evaluation test was 83% (suitable type). The research and development results of the Supplementary Reading E-Worksheet based on SDGs (Sustainable Development Goals) for Tenth Grade students at SMAN 3 Tarakan are feasible for use in English learning.Â
Pengembangan Media Mind Map Terintegrasi Lift The Flap Pada Materi Jaring-jaring Makanan Untuk Siswa Kelas V Sekolah Dasar
Authors: Fiska Tiara , Feni Kurnia
Published: September 2024

The lack of learning media for science subjects, particularly food web material, inspired this study because schools have limited learning media, and using less varied media is still widespread. This research aims to develop an integrated lift-the-flap mind map learning medium on food web material at SD Negeri 12 Tempilang as a suitable and practical medium.
This research is research and development (R&D) using the ADDIE model, which consists of 5 stages: analysis, design, development, implementation, and evaluation. The subjects of this research consisted of 24 fifth-grade students at SD Negeri 12 Tempilang. Data collection techniques and instruments are in the form of questionnaires. The data analysis technique is quantitative-descriptive, consisting of feasibility data from media and material experts. Practicality data was obtained from the results of student questionnaire responses.
Based on the media validator assessment results, the percentage obtained was 92.45% (eligible), and the material validator obtained 87.5% (eligible). The results of small-scale trials were 95% (very practical), and those of large-scale trials were 97,80% (efficient). The results of the paired sample t-test have a significance value of 0.00 < 0.05, so it can be concluded that H0 is rejected and Ha is accepted, meaning that there are differences before and after in using learning media.
ANALISIS MOTIVASI KERJA KARYAWAN PADA PT. ALFA KENCANA SAMUDRA
Authors: Nurhayati Nurhayati
Published: September 2024

Good quality human resources are very important for a company because it is a very common need for every company. This research uses a survey method using primary data obtained from questionnaires. The types of data used in this study are quantitative data and qualitative data. The results showed that work motivation was quite good, this can be seen from the responses of respondents at PT Alfa Kencana Samudra as many as 26 respondents based on this recapitulation, it can be concluded that the variable dimensions of physiological needs on work motivation at PT Alfa Kencana. This proves that PT Alfa Kencana Samudra has fulfilled the five needs of employees in the theory of needs put forward by Abraham Maslow (Mangkunegara, 2005) so that it can be concluded that employees are motivated to work.
Keywords: Motivation, Work
The impact of COVID-19 pandemic on recommended adult vaccination in the elderly: A hospital-based study
Authors: Karaçepiş Cemile , Mutlu Hacer Hicran , Mutlu Hasan Hüseyin , Gülek Ayşe
Published: September 2024

ÖZET
Amaç: COVİD-19 salgınıyla birlikte tüm dünyada ve
Türkiye'de önemli değişiklikler meydana geldi. Önerilen
yetişkin aşılama uygulamaları da bunlardan biridir. Bu
çalışma, COVID-19 salgını öncesi ve sonrası yetişkinlerde
aşılama oranlarını ve farkındalıklarını karşılaştırmayı
amaçlamaktadır.
Materyal ve Metodlar: Yanıt verenlere sosyodemografik
özellikler (yaş, cinsiyet, medeni durum, eğitim durumu,
yandaş hastalıklar), yetişkinlikte yapılan aşılar, pandemi
öncesi ve pandemi sırasında aşı yaptırma ve aşılardan
kaçınma nedenleri soruldu. Sonuçlar tüm yazarların izni
alınarak aynı hastanenin aynı polikliniğinde 31.01.2017-
01.06.2017 tarihleri arasında gerçekleştirilen çalışmanın
verileriyle karşılaştırıldı.
Bulgular: Pnömokok (%9,9 vs %56,5) (p<0,001), influenza
(%33,9 vs %47,7) (p=0,004), tetanoz (%1,3 vs %20,7)
(p<0,001) ve hepatit B (%0,7 vs %4,8) (p=0,04) olduğu
gözlendi. Aşılanma oranlarında pandemi öncesi döneme
göre pandemi döneminde anlamlı artış görüldü.
Sonuç: Erişkin aşı kapsamı yetersiz olmakla birlikte,
pandemiyle birlikte erişkinlerde özellikle pnömokok aşı
kapsamı artmıştır. Bu artışta geleneksel ve sosyal medyanın
önemli bir rolü olduğu değerlendirildi.
Anahtar kelimeler: Aşılama, aşı karşıtlığı, aşı takvimi,
COVID-19 pandemisi, geleneksel medya, sosyal medya
Determinants affecting the current state and perspectives of development
of textile and clothing industry clusters within the European Union
Authors: GAJDOVÁ DENISA
Published: September 2024

The textile and clothing industry is one of the oldest industries ever, as the need for clothing is as old as human existence
itself. Of course, the challenges and problems it faces are connected with this, currently primarily the environmental
burden, the need for digitization, low wages for workers as well as the protection of brands and the development of the
grey economy. With its positions, the European Union declares its interest in solving these issues. Many traditional
companies are undergoing changes and there is a natural need for innovation, thus the textile and clothing industry is
interfering with the creative industry. The barriers to innovation in this area are frequently small and medium-sized
enterprises, which cannot solve many things and be competitive compared to large enterprises, but their flexibility and
quick response to the changing needs of customers and the market give them advantages compared to the big ones.
The possibilities of how smaller businesses can succeed and compete even in the long term are through clusters, which
will provide them with the necessary scope, strength, and research, but at the same time keep them independent. In our
contribution, we tried to find out the perspective of the development of textile and clothing industry clusters in Europe
given the existing market situation and consumer expectations.
Design and research on the posture-adjustable mannequin for chest-up
and hunchbacked posture
Authors: XU GUODONG , REN YUJIA , CHEN YU
Published: September 2024

The development of garment personalization has put forward diverse requirements for mannequins. In this paper, we
present a garment mannequin that can continuously alter the body posture in response to changes in human body
posture in the chest and back regions. This research is founded on an analysis of the patterns and ranges of movement
in the mannequin's chest and hunchbacked motions. We segmented the mannequin into six modules: neck, front chest,
back, left and right shoulders, and waist and abdomen. By employing stepper motors, we independently drive the front
chest, back, and left and right shoulders to achieve the simulation and continuous adjustment of the mannequin's body
posture for chest and hunchbacked positions. The comparison of the 3D scans shows that the mannequin fits well in
several cross-sections with the corresponding body variations of real people, and the results of the real shirt also show
that the shirt made based on the simulated hunchbacked body mannequin is significantly better than the standard shirt
in terms of comfort and aesthetics for a person with a hunchbacked body posture. The body posture adjustable
mannequin can replace multiple static mannequins, which can provide strong support for the business model of
personalized clothing customization. Compared with the existing dynamic mannequin, it has the advantages of high
relevance, simple structure and low production cost.
Impacto de la hipertensión arterial no controlada en el acoplamiento aurículo-ventrículo-arterial en pacientes sin cardiopatía estructural
Authors:   , Mallagray Sofía Mercedes
Published: September 2024

La hipertensión arterial es una causa prevenible de muerte en todo el mundo y tiene una alta prevalencia, especialmente en personas mayores. Suele estar asociada con factores de riesgo adicionales, como tabaquismo, inactividad física, alimentación inadecuada, dislipidemia, intolerancia a la glucosa y obesidad, lo que aumenta el riesgo de enfermedades cardiovasculares. La hipertensión arterial no controlada puede ocasionar daños a órganos vitales como el corazón, los riñones y el cerebro, incrementando así el riesgo de mortalidad. Es por esto que el control de la presión arterial resulta fundamental para reducir la probabilidad de desarrollar enfermedades cardiovasculares. Sin embargo, alcanzar los objetivos terapéuticos en el tratamiento de la hipertensión continúa siendo un desafío. El MAPA ha demostrado ser una herramienta sumamente valiosa en la evaluación del control de la presión arterial en pacientes hipertensos. Esto se debe a su capacidad para identificar casos de hipertensión de bata blanca y enmascarada, lo que lo convierte en una herramienta esencial en el diagnóstico y seguimiento de la hipertensión arterial. La presión arterial no controlada se ha relacionado de manera independiente con un aumento en el riesgo de disfunción miocárdica temprana y desacoplamiento auriculo-ventrículo-arterial. En nuestro estudio, hemos evidenciado una disminución significativa del SLG del VI en pacientes con hipertensión no controlada. Este hallazgo se considera un indicador temprano de disfunción miocárdica en pacientes sin evidencia de hipertrofia ventricular. Hemos observado además una disminución en el strain de la aurícula izquierda en ambos grupos de hipertensos, la cual precede a la disfunción miocárdica del ventrículo izquierdo. Esto nos lleva a inferir que el daño miocárdico auricular probablemente se produce de manera paralela a los cambios hemodinámicos y geométricos del VI. Es plausible considerar que este parámetro podría ser el indicador más temprano de daño de órgano blanco a nivel cardiaco. Estos nuevos hallazgos sugieren la posibilidad de que un control subóptimo de la presión arterial pueda ser un factor de riesgo o un acelerador de los cambios desadaptativos y fisiopatológicos asociados a la hipertensión.
Biocontrol in vitro e in vivo de aislados no defoliantes (ND) de Verticillium dahliae obtenidos de olivo (Olea europaea) en Catamarca y La Rioja con cepas nativas identificadas y caracterizadas de Trichoderma del noroeste de Argentina
Authors:   , Carrasco Franca Denise
Published: September 2024

El olivo, en el noroeste de Argentina, representa una importante fuente de ingresos por la exportación de aceite y aceituna de mesa. Entre los patógenos que causan pérdidas importantes, en Catamarca y La Rioja, se destacan los aislados no defoliantes (ND) de Verticillium. Con la finalidad de investigar sobre las cepas nativas de Trichoderma con capacidad de inhibir el crecimiento (PIC) y parasitar Verticillium (PM) se realizaron ensayos de biocontrol in vitro e in vivo. Los ensayos incluyeron los aislados Vd-1 (La Rioja) y Vd-2 (Catamarca) y 40 cepas nativas de Trichoderma. Los experimentos in vivo abarcaron los mismos aislados de Verticillium y un grupo de cepas de Trichoderma seleccionadas. Previo a los ensayos de biocontrol se obtuvieron y caracterizaron aislados de Verticillium de olivos sintomáticos. Por otro lado, se obtuvieron cepas nativas de Trichoderma que fueron caracterizadas morfo-molecularmente, y por su capacidad antagonista y endofítica y producción de indoles. Los estudios indicaron que Trichoderma 66 Tr mostró % de inhibición de crecimiento y parasitismo significativo para ambos aislados de Verticillium. Este estudio representa el primer registro de biocontrol de Verticillium en olivo con cepas nativas de Trichoderma bajo condiciones de invernáculo.
A REVIEW OF APPLICATION OF WATER JET TECHNOLOGY IN AGRICULTURE
Authors: ZHU Lixue , LUO Wenxuan , HU Hongnan , ZHANG Shiang , SHI Yifan , HUANG Shinian
Published: September 2024

Water jet technology, as a non-contact cutting and crushing technique, is commonly used in industries such as cleaning, rust removal, cutting, drilling, and mining. It enables a green and environmentally friendly production process by avoiding environmental pollution, heat generation, blade replacement, and sharpening issues. Cutting, cleaning, and crushing techniques are widely applied in various stages of agricultural production, but mostly through contact-based methods. The application of non-contact water jet technology in the agricultural field is still in its infancy. This paper summarized the current application status and research progress of water jet technology in different operational stages of agriculture, including sowing, management, field harvesting, and post-harvest processing. The specific requirements of key parameters for different operational objects and stages were analysed. Furthermore, the challenges encountered in the application of water jet technology in agriculture and provides prospects for future research directions were discussed. The review is intended to provide references for the promotion and green sustainable development of water jet technology in the agricultural field.
DESIGN AND TESTING OF PEANUT SIEVING PROTOTYPE MACHINE
Authors: LI Dongjie , HOU Jialin , WANG Dongwei , CHANG Zengcun
Published: September 2024

In order to address the high impurity and loss rates in the cleaning process of existing peanut combine harvesters, the design basis of the cleaning sieve was explored. Tests were conducted to determine the composition of the peanut picking fruit and the characteristics of the material suspension mixture. Additionally, the mechanical relationship between the fruit and miscellaneous mixtures and the cleaning sieve was investigated. The wind speed ranged from 8 m/s to 10 m/s, the vibration frequency ranged from 6 Hz to 8 Hz, and the inclination angle of the sieve ranged from 5° to 9°. The scavenger sieve platform was constructed and tested using Box-Behnken’s central combination test method. The optimal combination of fan wind speed (9 m/s), sieve surface inclination angle (8°), and sieve vibration frequency (7 Hz) resulted in a pod impurity rate of 1.16% and a loss rate of 1.4%. The device significantly reduces impurity content and loss rate during peanut harvesting. The study's results can serve as a reference for improving the design of the peanut combine harvester cleaning mechanism and optimizing operating parameters.
ENGINEERING PROPERTIES OF COMMON BEAN (PHASEOLUS VULGARIS L.) IN PERSPECTIVE OF PHYSICAL AND FRICTIONAL PARAMETERS FOR THRESHING MACHINE DESIGN
Authors: ZEWDIE Biniam , OLANIYAN Adesoji M. , WAKO Amana , ALEMU Dereje , LEMA Tamrat
Published: September 2024

When designing appropriate machinery systems, equipment, and infrastructures for interacting with, cultivating, gathering, and agriculture-related processing, it is required to have an understanding of the engineering characteristics of agricultural products. This unpredictability makes it difficult to design or develop machines that can efficiently and effectively manage a wide range of product characteristics. Experimental analysis was used to accomplish the study's objective, which was to investigate the implications of variation on the physical characteristics and frictional parameters of common beans (Phaseolus vulgaris L.) concerning the design of the threshing machine. One hundred bean seeds from each variety were randomly selected and their three primary dimensions were measured with a digital vernier caliper (least count 0.01 mm) and a micro-screw gauge in order to determine the dimensional parameters. The remaining parameters (elongation at the width, thickness, and vertical orientation, geometrical mean diameter, arithmetic mean diameter, square mean diameter, equivalent mean diameter, roundness, sphericity, flakiness ratio, aspect ratio, cross-sectional area, projected area, transverse surface area, and the seed volume) were calculated using mathematical models. Gravimetric characteristics true density and seed volumes were calculated using the toluene displacement method. The data were subjected to analysis of variance (ANOVA), and the Duncan multiple range test was used to separate the means. Significance was accepted at 95% confidence interval (p< 0.05).The results data are required for predicting loads in agricultural storage structures, and to establish useful sources for the development of machinery for handling, cleaning, storing, transporting and drying, among other things.
Keanekaragaman Jenis Bambu di Kawasan Hutan Desa Kuwil, Kecamatan Kalawat, Kabupaten Minahasa Utara
Authors: Janis Broery J. , Lasut Marthen Theogives , Pangemanan Euis F.S.
Published: September 2024

Keanekaragaman di Indonesia sangat tinggi, salah satunya yaitu Bambu di Desa Kuwil, Kecamatan Kalawat, Kabupaten Minahasa Utara terdapat berbagai jenis bambu Tujuan penelitian ini yaitu untuk mengetahui keanekaragaman jenis bambu di kawasan hutan Desa Kuwil, Minahasa Utara.  Penelitian ini dilakukan dengan metode eksploratif yaitu menjelajahi hutan yang ada di Desa Kuwil, kemudian mengambil sampel bambu, mencatat karakter morfologinya, serta dianalisa secara deskriptif. Berdasarkan hasil penelitian, terdapat 6 jenis bambu yang tergolong dalam 4 marga yaitu Dendrocalamus (Dendrocalamus asper (Schult.) Backer), Bambusa (Bambusa blumeana Schult.f. dan Bambusa vulgaris var. vulgaris Schard.), Schizostachyum (Schizostachyum brachycladum Kurz dan Schizostachyum lima (Blanco) Merr), dan Gigantochloa (Gigantochloa atter (Hassk) Kurz). Satu diantaranya merupakan catatan baru di Sulawesi Utara, yaitu Bambusa blumeana Schult.f..
Komposisi dan Struktur Vegetasi Mangrove di Desa Tatakalai Kabupaten Banggai Kepulauan, Sulawesi Tengah
Authors: Sengkul Sukmalita , Langi Martina A. , Tasitrin Caroline N.A.C.
Published: September 2024

Penelitian ini bertujuan untuk mempelajari komposisi dan struktur vegetasi pohon mangrove di Desa Tatakalai Kabupaten Banggai Kepulauan, Sulawesi Tengah. Metode survey lapangan dengan jalur berpetak dibuat sebanyak 34 buah yang tersebar di enam transek pengamatan.  Komposisi dan struktur pohon pada vegetasi mangrove dianalisis menggunakan pendekatan Indeks Nilai Penting (INP). Hasil penelitian menunjukkan bahwa terdapat enam jenis pohon mangrove mayor (sejati) dan dua jenis pohon mangrove asosiasi. Kelompok mayor vegetasi mangrove Desa Tatakalai terdiri atas enam jenis yaitu Rhizophora apiculata Bl, (Rhizophoraceae), Bruguiera gymnorrhiza (L.) Lamk. (Rhizophoraceae), Rhizophora stylosa Griff. (Rhizophoraceae), Ceriops tagal (Perr.) C.B.Rob. (Rhizophoraceae), Lumnitzera littorea (Jack) Voigt (Combretaceae), dan Sonneratia alba J.E. (Sonneratiaceae). Komponen asosiasi vegetasi mangrove Desa Tatakalai terdiri atas Hibiscus tiliaceus L. (Malvaceae) dan Morinda citrifolia L. (Rubiceae).  Selanjutnya struktur vegetasi pohon hutan mangrove di Desa Tatakalai didominasi oleh tingkat pancang. Jenis yang mendominasi pada seluruh tingkat pertumbuhan adalah Rhizophora apiculata Bl.  Distribusi penyebaran diameter paling besar yaitu 38,4 cm, sedangkan distribusi tinggi didominasi oleh jenis Bruguiera gymnorrhiza (L.) Lamk dengan angka tertinggi adalah 16 m.
Using magneto-optical effects in soft X-ray reflectivity to study current driven magnetization reversal
Authors: Kiranjot  , Fan Raymond , Aboljadayel R. O. M. , Burn David M. , Alsaeed Kalel , Hindmarch Aidan T. , Steadman Paul
Published: September 2024

The soft X-ray reflectivity technique is frequently utilized for studying magnetization reversal in thin films due to its elemental and depth sensitivity. The characteristic hysteresis loops measured with this technique are dependent on both the magnetization direction in magnetic materials and the incident soft X-ray polarization. In this note, we have discussed these magneto-optical effects in soft X-ray reflectivity measurements. These effects can be exploited to probe magnetization reversal mechanisms driven by stimuli beyond conventional means of magnetic field. To demonstrate this, we have presented our investigations on current-induced magnetization switching in ferromagnet (FM)/heavy metal(HM) heterostructures.
Interactions between supported lipid bilayers and substrates that affect lateral diffusion of lipids
Authors: Sumitomo Koji , Yoshimizu Hiroto , Oshima Azusa , Yamaguchi Masumi , Heya Akira
Published: September 2024

Changes in the diffusion coefficient of supported lipid bilayers affected by their interaction with the substrate were evaluated by fluorescence recovery after photobleaching under different surface charges and ambient conditions (presence of divalent ions in solution). The diffusion coefficients of each leaflet were estimated separately by quenching only the leaflet on the far side from the substrate with Co2+ ions. The potential valleys, which are created by the divalent ions between the supported lipid bilayer and the substrate or the positive charges on the substrate surface, act as diffusion barriers, and the diffusion coefficient of the leaflet on the side closer to the substrate decreases. At the same time, the other leaflet far from the substrate also showed a somewhat decrease in diffusion coefficient due to interleaflet coupling.
Efficient photosensitized luminescence from Eu3+ in inert nanocrystals via ligand coordination
Authors: Goushi Kenichi , Kashiwagi Yusaku , Adachi Chihaya
Published: September 2024

Luminescent lanthanide ions incorporated in sodium yttrium fluoride nanocrystals are promising as new luminescent materials in optoelectronics and bioimaging since the nonradiative transition is significantly suppressed due to the absence of high-energy vibrational modes. To prepare optically and electrically active nanocrystals, we explored organic ligands that allow efficient triplet energy transfer to Eu3+ incorporated into nanocrystals, resulting in an efficient photosensitization effect in colloidal solutions and films. Further, we applied these emitting nanocrystals to light-emitting devices and observed the electroluminescence.
Ancora sull’uso del genere femminile nei testi giuridico-amministrativi
Authors: dell’Accademia della Crusca Il Consiglio Direttivo
Published: September 2024

Riprendendo quanto già scritto e pubblicato su questo stesso sito il 9 marzo 2023 in risposta a un quesito sulla parità di genere negli atti giudiziari posto dal Comitato Pari opportunità del Consiglio direttivo della Corte di Cassazione, il 15 luglio 2024 il Consiglio direttivo dell’Accademia della Crusca (costituito dal presidente Paolo D’Achille, dalla vicepresidente Rita Librandi, dall’accademica segretaria Annalisa Nesi e dai consiglieri Federigo Bambi e Rosario Coluccia) ha ritenuto utile fornire nuovamente, in forma sintetica, alcune indicazioni di carattere generale (per singoli casi si rimanda alla pagina del sito che segnala tutti gli interventi sull’argomento pubblicati sullo stesso sito nel corso degli anni).
Pengaruh Modal Terhadap Tingkat Kesejahteraan Petani di Desa Lakapera Kecamatan Gu Kabupaten Buton Tengah
Authors: Novel Tri Alva , Al Zarliani Wa Ode , Ajo Antasalam
Published: September 2024

Ketersediaan modal menjadi masalah tersendiri terutama untuk petani di daerah perdesaan. Penelitian ini dilakukan dengan tujuan untuk mengetahui pengaruh modal terhadap tingkat kesejahteraan petani di Desa Lakapera, Kecamatan Gu, Kabupaten Buton Tengah. Data yang digunakan adalah data hasil wawancara langsung dengan petani dan variabel yang dikumpulkan adalah modal usaha dan pendapatan.  Analisis data penelitian ini menggunakan teknik analisis regresi sederhana. Hasil penelitian ini menunjukkan pengaruh modal terhadap tingkat kesejahteraan petani adalah sebesar 50,7 persen sedangkan sisanya yakni 49,3 persen dipengaruhi oleh faktor-faktor lain. Koefisien regresi X sebesar 5,745 menyatakan bahwa jika modal mengalami kenaikan satu satuan, maka tingkat kesejahteraan petani akan mengalami peningkatan sebesar 5,745 atau 574 persen. Menindaklanjuti temuan penelitian ini diharapkan dapat menjadi referensi dapat menjadi gambaran tentang kesejahteraan petani di perdesaan dan menjadi referensi bagi penelitian selanjutnya.
The availability of capital is a problem, especially for farmers in rural areas. This study was conducted with the aim of knowing the effect of capital on the level of welfare of farmers in Lakapera Village, Gu District, Central Buton Regency. The data used were data from direct interviews with farmers and the variables collected were business capital and income.  Data analysis of this study used simple regression analysis techniques. The results of this study indicate that the effect of capital on the level of welfare of farmers is 50.7 percent while the remaining 49.3 percent is influenced by other factors. The regression coefficient X of 5.745 states that if capital increases by one unit, then the welfare level of farmers will increase by 5.745 or 574 percent. Following up on the findings of this study is expected to be a reference can be a picture of the welfare of farmers in rural areas and become a reference for further research.
Reviu Literatur: Efek Samping Penggunaan Kontrasepsi Suntik
Authors: Murniati Ika Azdah , Suriana Ni Putu Wahyu , Mawar Astri
Published: September 2024

Penelitian ini bertujuan untuk mengkaji efek samping penggunaan kontrasepsi suntik, terutama Depo Medroxyprogesterone Acetate (DMPA), melalui metode narrative review. Literatur yang digunakan dalam penelitian ini mencakup studi-studi yang diterbitkan antara tahun 2019 hingga 2024, yang diidentifikasi melalui pencarian di basis data seperti PubMed, Google Scholar, dan jurnal yang terindeks dalam SINTA dan Scopus. Hasil dari tinjauan pustaka menunjukkan bahwa penggunaan DMPA memiliki beberapa efek samping signifikan, termasuk disfungsi seksual yang dialami oleh 54% pengguna, peningkatan konsentrasi timbal dalam darah, serta gangguan pada lapisan epitel yang dapat meningkatkan risiko infeksi. Di sisi lain, DMPA juga menunjukkan efek protektif terhadap perkembangan leiomyoma, dengan insidensi yang lebih rendah pada pengguna dibandingkan dengan non-pengguna. Meskipun sebagian besar penelitian tidak menemukan peningkatan risiko kanker payudara yang signifikan pada pengguna DMPA, beberapa studi menunjukkan adanya risiko yang sedikit meningkat. Oleh karena itu, penting bagi penyedia layanan kesehatan untuk memberikan informasi yang komprehensif kepada pengguna mengenai risiko dan manfaat DMPA sebelum pemilihan metode kontrasepsi.
This study aims to examine the side effects of injectable contraceptive use, especially Depo Medroxyprogesterone Acetate (DMPA), through a narrative review method. The literature used in this study includes studies published between 2019 and 2024, which were identified through searches in databases such as PubMed, Google Scholar, and journals indexed in SINTA and Scopus. The results of the literature review indicate that the use of DMPA has several significant side effects, including sexual dysfunction experienced by 54% of users, increased blood lead concentrations, and disorders of the epithelial layer that can increase the risk of infection. On the other hand, DMPA also shows a protective effect against the development of leiomyoma, with a lower incidence in users compared to non-users. Although most studies have not found a significant increase in the risk of breast cancer in DMPA users, some studies have shown a slightly increased risk. Therefore, it is important for health care providers to provide comprehensive information to users regarding the risks and benefits of DMPA before choosing a contraceptive method.
ANALISIS SEMIOTIKA PADA ULOS HARUNGGUAN MUARA
Authors: Parasian Nehemia Anugrah , Sinulingga Jekmen , Sinaga Warisman
Published: September 2024

Ulos Harungguan Muara merupakan salah satu ulos etnik Batak Toba. Ulos yang berasal dari Muara ini memiliki motif yang tergabung dari motif ulos yang dimiliki oleh etnik Batak Toba dan komodifikasi dilakukan sebagai pengembangan dari ulos ini. Penelitian ini bertujuan untuk mendeskripsikan bentuk simbol, mendeskripsikan fungsi yang terdapat pada UHM, mendeskripsikan makna yang terdapat pada UHM, mendeskripsikan komodifikasi yang terdapat pada UHM. Teori yang digunakan dalam menganalisis data merupakan teori semiotika yang dikemukakan oleh Charles Sanders Peirce dan teori komodifikasi yang dikemukakan oleh Mosco. Metode yang digunakan pada penelitian ini adalah deskriptif kualitatif. Pada penelitian ini ditemukan hasil simbol, yakni 22 bentuk simbol motif. Dari hasil penelitian terhadap fungsi simbol, ditemukan 2 fungsi, yakni: (1) fungsi simbolis dan (2) fungsi praktis. Berdasarkan maknanya, ditemukan 2 makna, yakni: (1) makna konotasi dan (2) makna denotasi, serta komodifikasi yang terdapat yakni: (1) komodifikasi fungsi dan penggunaan UHM dan (2) komodifikasi fungsi dan bentuk UHM.