bluuebunny/crossref_metadata_2025 huggingface dataset:
Energy balance of thermal and catalytic degradation processes of plastic waste for producing alternative fuel
Authors: Sasongko Beni Tri , Wisnu Wardhana Prabuditya Bhisma , Kurniawan Stephanus Danny , Susilo Gunawan Budi
Published: October 2023

A simple thermal and catalytic degradation of polyethylene plastic waste has been carried out to produce alternative liquid fuel. Plastic of 1500 grams was pyrolyzed at a specific temperature of 450 °C. The gases were condensed in a water-cooled condenser and collected in a liquid container. Energy balance calculation was done where catalytic cracking with Y zeolite as catalyst seemed to be the best because the generated thermal energy from waste plastic oil was already higher than the required electric energy supplied for the cracking. However, several improvements must always be made in order to save more energy and create the best result for commercialization.
Work, retirement, and post-retirement employment among older adults in India
Authors: Siqueira Lobo Charmaine Savia , Falleiro Savio P.
Published: October 2023

Older adults in India, particularly those in Goa, where there is a high elderly population, have been insufficiently researched. Some older adults are financially vulnerable in their old age and must continue working, while others choose to work to stay active. Although some studies have examined the health and social issues faced by the elderly, this study contributes to a previously unexplored area in Goa. 400 Goan seniors were surveyed using multistage sampling to investigate their occupations before and after retirement, determine reasons for voluntary retirement and associated factors, and assess variables predisposing them to work. Binary Logistic Regression, Chi-square, and Fisher's Exact Tests were used. The findings showed that many were former government and private sector employees, farmers, and educators. 73 participants retired voluntarily due to factors such as health issues, family commitments, stress, and leisure. Among them, 20.5% are currently employed after retirement. Significant correlations were observed between post-retirement work and age groups such as the young-old and old-old. Factors that attracted the participants to engage in post-retirement work include insufficient income, education, experience, good physical health, and mental alertness. The study found that individuals categorized as young-old, with low household income, financially dependent, and having fewer comorbidities, were more likely to continue working after retirement. These findings highlight the need to end age discrimination and provide equal opportunity for older adults to contribute to society. Policymakers must focus on improving the wellbeing of vulnerable older adults who have inadequate resources and poor health. There is potential for further research in various states of India to understand the labor market decisions of older adults and implement necessary improvements where they are lacking.
In-hospital clinical outcomes in kidney transplant recipients with COVID-19 infection
Authors: Celis-Conde Sonia , Pinto-Ramirez Jessica , Garcia-Lopez Andrea , Patino-Jaramillo Nasly , Camargo-Salamanca Alejandro , Anaya-Taboada Marco , Lozano-Castañeda Fredy , Giron-Luque Fernando
Published: October 2023

Introduction: The coronavirus 19 disease (COVID-19) increased mortality in organ solid transplant patients due to chronic immunosuppression and significant comorbidity burden. We aim to evaluate patient and graft survival in kidney transplant (KT) recipients who were hospitalized or treated in Intensive Care Units (ICU) after contracting COVID-19.
Methods: A retrospective analysis was conducted on adult KT recipients diagnosed with COVID-19 between June 1 and July 31, 2021. The study reported demographics, symptoms, laboratory parameters, and clinical outcomes 30 days after a positive test. Risk factors for mortality were identified through comparisons between hospitalization-in-wards and ICU groups. The Kaplan-Meier method was used to calculate graft and patient survival.
Results: 55 KT patients were analysed, recipient age and history of diabetes showed significant differences between groups (p = 0.0124 and p = 0.0506, respectively). Multivariate analysis revealed that diabetes (p = 0.002) and dialysis requirement (p = 0.0006) were significantly associated with mortality risk. The overall mortality rate was 25.5%, with graft loss at 12.7%. Patient survival after 30 days was 74.5%, with significantly higher survival in the hospitalization-in-wards group (p = 0.0001) compared to the ICU group.
Conclusions: KT patients diagnosed with COVID-19 are at higher mortality risk than the general population. Our study found that patients in the ICU group experienced worse clinical outcomes and higher mortality rates compared to those in the hospitalization-in-wards group. These findings underscore the importance of closely monitoring COVID-19-implicated KT patients and tailoring treatment plans to minimize risk and improve outcomes.
Linking diversity in learning Geometry: Exploring tessellation in techno-based mathematical tasks
Authors: Laksmiwati Pasttita Ayu , Hidayah Miftahul , Schmidthaler Eva , Prahmana Rully Charitas Indra , Sabitzer Barbara , Lavicza Zsolt
Published: October 2023

Nowadays, digital technologies are crucial in supporting students in geometry in secondary mathematics classrooms. However, in some cases, the role of visual function in technology was only utilized for seeing and conjecturing, not for experimenting, while to develop a relational understanding of geometry concepts, students should actively participate in the learning process. To address the issue, this study investigated how students learn geometry with digital technology assistance based on students' diversity in their mathematics abilities. A task with a dynamic geometry software called Techno-based Mathematical Tasks (TbMT) was designed to assist students in exploring geometrical activities and solving a problem through investigations on tessellation. This research employs educational design research and focuses on the preliminary design by conducting a pilot study on three students based on the diversity in their ability in mathematics classrooms, i.e., low, middle, and high. As part of data collection, we captured students' works to examine critical information in their responses based on their differences in abilities. We collected the data through online meetings and recorded the data. We analyzed students' work from the recording by capturing critical information. The results revealed that the TbMT might provide students with opportunities to learn by exploring tessellation activities that might contribute to students' understanding of geometry concepts. Due to the limited number of participants in this study, further research can be an opportunity to expand the number of participants to enhance the contribution to the literature with more comprehensive empirical evidence.
Developing a workshop model for high school mathematics teachers in constructing HOTS questions through the Pendidikan Matematika Realistik Indonesia approach
Authors: Edwar  , Putri Ratu Ilma Indra , Zulkardi  , Darmawijoyo
Published: October 2023

Indonesia's Program for International Student Assessment (PISA) results from 2000 to 2018 are worrisome because they are at the bottom of the international rankings. This result illustrates the low quality of education in Indonesia, which correlates with the qualifications of teachers. The quality of education will increase proportionally to the proportion of teachers who possess the necessary skills. Therefore, this study aims to train teachers to improve their professionalism in developing HOTs questions using the Pendidikan Matematika Realistik Indonesia (PMRI) approach. Design research-type development studies with two stages, preliminary and formative evaluation, are utilized. The results of the workshop revealed that the teacher's competency scores in developing HOTs questions increased by 45.70% (before the workshop), 77.14% (workshop 1), and 85.70% (workshop 2), respectively. It is evidenced by the teacher's ability to develop HOTs questions with the characteristics of questions investigating number content within the local context of selling duku fruits (langsat), which is a typical fruit of the East Ogan Komering Ulu (OKU) Regency and with a high degree of difficulty. This research also affects students in that it can stimulate their critical thinking abilities.
A comparison of the effects of different methodologies on the statistics learning profiles of prospective primary education teachers from a gender perspective
Authors: Anasagasti Jon , Berciano Ainhoa , Izagirre Ane
Published: October 2023

Over the last decades, it has been shown that teaching and learning statistics is complex, regardless of the teaching methodology. This research presents the different learning profiles identified in a group of future Primary Education (PE) teachers during the study of the Statistics block depending on the methodology used and gender, where the sample consists of 132 students in the third year of the PE undergraduate degree in the University of the Basque Country (Universidad del País Vasco/Euskal Herriko Unibertsitatea, UPV/EHU). To determine the profiles, a cluster analysis technique has been used, where the main variables to determine them are, on the one hand, their statistical competence development and, on the other hand, the evolution of their attitude towards statistics. In order to better understand the nature of the profiles obtained, the type of teaching methodology used to work on the Statistics block has been taken into account.  This comparison is based on the fact that the sample is divided into two groups: one has worked with a Project Based Learning (PBL) methodology, while the other has worked with a methodology in which theoretical explanations and typically decontextualized exercises predominate. Among the results obtained, three differentiated profiles are observed, highlighting the proportion of students with an advantageous profile in the group where PBL is included. With regard to gender, the results show that women's attitudes toward statistics evolved more positively than men's after the sessions devoted to statistics in the PBL group.
Clinical Analysis of Air-Leak Syndrome Following Allogeneic Hematopoietic Stem Cell Transplantation in Pediatric Patients
Authors: Chen Man , Zhao Wei
Published: October 2023

Air-leak syndrome (ALS) is an independent poor prognosis factor among
adult patients who have received hematopoietic stem cell transplantation
(HSCT), which 5-year overall survival (OS) is less than 30%. However,
the clinical features of ALS among post-transplant pediatric patients
have rarely been explored.We retrospectively reviewed 2,206 pediatric
patients who received an allo-HSCT between January 2013 and December
2019 at the Hebei Yanda Lu Daopei Hospital and analyzed the role of ALS
in their prognosis following HSCT.We divided ALS into two categories: 15
cases of bronchiolitis obliterans syndrome (BOS) and 13 cases of
idiopathic pneumonia syndrome (IPS).Following treatment of the ALS, 18
patients survived (18/28, 64.3%) and 10 patients died of respiratory
failure or infection (10/28, 35.7%). The OS of ALS in our hospital is
significantly higher than that cited in previous reports which may be
related to early diagnosis and timely FAM treatment.
Molecular sexing reveals ontogenetic shifts in sex ratios and underlying processes in a dioecious tree species
Authors: Lin Wei , Zhang Yonghua , Queenborough Simon , Ni Ming , He Qing , Li Bu-Hang , Chu Chengjin
Published: October 2023

Most dioecious plants are trees. However, because of the difficulty in
determining sex from vegetative morphology, previous investigations of
the sex ratios of dioecious trees were limited to flowering individuals,
leading to inadequate and potentially unreliable data on patterns of sex
ratios and the underlying mechanisms driving their variation. Here, we
applied sex-specific molecular markers to investigate the sex ratio of a
fully mapped population of the dioecious tree Diospyros
morrisiana (Ebenaceae) in a subtropical forest. We also investigated
the sexual dimorphism of life-history traits and spatial association
between male and female trees to determine potential processes shaping
the sex ratio at different life stages. Molecular sexing revealed a
female-biased population sex ratio for this D. morrisiana
population, contrasting with the male-biased operational (i.e.,
flowering) sex ratio. The sex ratio of D. morrisiana shifted from
female-biased to male-biased over older life stages. We found that
reproduction had a larger impact on the growth of female trees, which
may account for the ontogenetic shift in sex ratio. There was no
evidence of spatial segregation of the sexes beyond a scale of 2 m.
Through molecular sexing of all individuals across all life stages, our
work revealed for the first time a shift from a female- to a male-biased
sex ratio in a huge population of a dioecious tree species. To better
understand variation in sex ratios and the underlying mechanisms in
dioecious trees, the sex of non-flowering and juvenile individuals
should be included in future studies.
The Metabolite Vanillic Acid Regulates Acinetobacter baumannii Surface Attachment
Authors: Godoy Veronica G. , Brychcy Merlin , Nguyen Brian , Casula Pranav , Kokodynski Alexis
Published: October 2023

The nosocomial bacterium Acinetobacter baumannii is protected
from antibiotic treatment by acquiring antibiotic resistances and by
forming biofilms. Cell attachment, one of the first steps in biofilm
formation, is normally induced by environmental metabolites. We
hypothesized that vanillic acid, the oxidized form of vanillin, a widely
available metabolite with antimicrobial properties, may play a role in
A. baumannii cell attachment. We first discovered that A.
baumannii actively breaks down VA through the evolutionarily conserved
vanABKP genes. These genes are under the control of the repressor
VanR, which we show binds directly to VanR binding sites within the
vanABKP genes bidirectional promoter. VA in turn counteracts VanR
inhibition. We identified a VanR binding site and searched for it
throughout the genome especially in pili encoding promoter genes. We
found a VanR binding site in the pilus encoding csu operon
promoter and showed that VanR binds specifically to it. As expected, a
strain lacking VanR overproduces Csu pili and makes robust biofilms. Our
study uncovers the role that VA plays in facilitating the attachment of
A. baumannii cells to surfaces, a crucial step in biofilm
formation. These findings provide valuable insights into a previously
obscure catabolic pathway with significant clinical implications.
ToffA-DSPL: An approach of Trade-off Analysis for designing Dynamic Software Product Lines
Authors: Carvalho Michelle Larissa Luciano , Santos Ismayle de Sousa , Masiero Paulo , Januario Tiago , Neto Pedro , Andrade Rossana Maria de Castro , Almeida Eduardo
Published: October 2023

Software engineers have adopted the Dynamic Software Product Lines
(DSPL) engineering practices to develop Dynamically Adaptable Software
(DAS). DAS is seen as a DSPL application and must cope with a large
number of configurations of features, Non-functional Requirements
(NFRs), and contexts. However, the accurate representation of the impact
of features over NFRs and contexts for the identification of optimal
configurations is not a trivial task. Software engineers need to have
domain knowledge and design DAS before deploying to satisfy those
requirements. Aiming to handle them, we proposed an approach of
Trade-off Analysis for DSPL at design-time, named ToffA-DSPL. It deals
with the configuration selection process considering interactions
between NFRs and contexts. We performed an exploratory study based on
simulations to identify the usefulness of the ToffA-DSPL approach. In
general, the configurations suggested by ToffA-DSPL provide high
satisfaction levels of NFRs. Based on simulations, we evidenced that our
approach aims to explore reuse and is useful for generating valid and
optimal configurations. In addition, ToffA-DSPL enables software
engineers to conduct trade-off analysis, evaluate changes in the context
feature, and define an adaptation model from optimal configurations
found in the analysis.
Mediating Effect of Self-Resilience on the Relationship between Financial Anxiety and Psychological Distress among University Students
Authors: Mat Hussin Nor Zaihan Mat Hasan , Jamal Aziz , Mohamad Besir Mohamad Shahril , Saadun Saadiah Juliana , Abdul Aziz Nor Intan Shamimi , Nordin Nor Azzura
Published: October 2023

The purpose of this study was to investigate the role that self-resilience plays as a mediator in the relationship between financial anxiety and psychological distress experienced by university students. In total, one hundred twenty undergraduate university students were sent an online invitation to take part in the research as survey respondents, and the survey instruments used were pre-tested to ensure their reliability. When the scores for respondents' financial anxiety, self-resilience, and psychological distress were compared with the characteristics of the respondents, the statistics suggest that there was no statistically significant difference. The primary finding reveals that self-resilience statistically and significantly mediated the association between financial anxiety and psychological distress, even though the effect size was relatively small. This is even though all variables were shown to have statistically significant correlations with one another. This study suggests that self-resilience can operate as a buffer against the potentially harmful impact that financial concern can have on psychological well-being. It is recommended that the university, in addition to providing continuous financial-related support to the students, provide a variety of programs on campus and off campus aimed at improving students' self-resilience. This will assist students in better managing their financial-related psychological distress.
Factorial Structure and Psychometric Validation of Social Media Intelligence Quotient (SMIQ) Scales among Graduates
Authors: Ibrahim Nadhrathul Ain , Musa Rosidah
Published: October 2023

The Social Media Intelligence Quotient (SMIQ)'s underlying factorial structure will be extracted, and validated, and its psychometric properties will be examined in this study. Self-administered questionnaires from the universities that produce the most employable graduates in Malaysia, such as Universiti Malaya, Universiti Kebangsaan Malaysia, and Universiti Teknologi Mara, were utilized by the researcher to gather the data. It involved 352 final-year students from the Faculty of Business Management. To ascertain the factorial structure of the SMIQ, the researcher used the Exploratory Factor Analysis (EFA). Additionally, the confirmatory factorial analysis (CFA) was used to evaluate the psychometric characteristics of each item to confirm and validate it. A structural model was also developed to measure the nomological validity between social media dependency and SMIQ. It revealed that SMIQ is second order with three factorial structure constructs and met the psychometric criteria. Thus, the findings have essential implications for future research directions and the management of social media skills.
Development in Electric Vehicle Intention and Adoption: Integrating the Extended Unified Theory of Acceptance and Use of Technology (UTAUT) and Religiosity
Authors: Mashahadi Faizah , Mahmod Razmah , Saidon Janiffa
Published: October 2023

Environmental sustainability has become an urgent problem that cannot be avoided and ignored. The transportation sector is the main cause of greenhouse gas emissions. Many suggest electric vehicles (EVs) as a mechanism for reducing environmental degradation since EVs release less greenhouse gas as compared to combustion cars. However, the sales of EVs in Malaysia are still low compared to the achievements recorded by the neighboring countries. Despite being the earliest to promote electric vehicles, in the first quarter of 2023, Malaysia has only represented 2.4% of the EV market in Southeast Asia. It seems that the success rate in promoting environmental conservation through the adoption of EVs is still minimal. For this reason, the existing study seeks to explore factors related to EV behavioral intention and adoption by using the extended UTAUT (performance expectancy, effort expectancy, social influence, facilitating condition, perceived value/cost, hedonic motive, and habit). The proposed study believes that environmental protection and sustainability must be related to individuals’ values and principles which could have been shaped based on religiosity. Therefore, in addition to the extended UTAUT that views EV intention and adoption from the technical and personal perspective, this study proposes religiosity as a predecessor in determining EV intention and adoption. The use of extended UTAUT and religiosity in the model will clarify the extent to which the influence of technical factors, personal factors and religiosity is determining the intention and adoption of EVs.
Navigating the COVID-19 Storm: Assessing Well-being in University Students from Lower-Income Backgrounds
Authors: Hassan Naffisah Mohd , Kassim Erne Suzila , Yunus Noor'ain Binti Mohamad , Mat Ali Syukrina Alini , Said Yahya Mahyuddin Utoh
Published: October 2023

The COVID-19 pandemic has had severe repercussions on individuals' lives, with particularly detrimental effects on those from economically disadvantaged backgrounds. The quality of life and overall well-being of this vulnerable demographic have been profoundly shaken. In the context of increasing research segmentation based on specific population profiles, this study is designed to investigate the well-being of university students hailing from lower-income groups during the pandemic, particularly when stringent movement control orders were in effect. Furthermore, this research scrutinizes variations in well-being with respect to gender and locality. A quantitative comparative approach was employed, and data were collected through a convenient online survey sampling method. The assessment of the subjects' quality of life was carried out using a standardized WHO-QOL BREF questionnaire, consisting of 26 items that measure various domains encompassing environment, physical health, psychological well-being, and social relationships. Furthermore, the WHO well-being measure was also used to assess the respondents' general well-being. Multigroup analysis (MGA) and partial least squares structural equation modeling (PLS-SEM) were used to analyze the data. 305 students made up the study cohort, of whom 112 lived in urban regions and 193 in rural ones. The results show significant differences between male and female students in the areas of physical and psychological health. The study also found that among rural students, environmental characteristics and well-being were significantly correlated, although this was not the case for their urban counterparts
Foreign Bias in the Global Portfolio Investment of Selected OIC Countries
Authors: Md Elias Nura Lina
Published: October 2023

Home bias reflects the propensity of investors to invest substantially in the domestic market. When investing abroad investors exhibit foreign bias, a tendency to overweight certain foreign markets based on their preferences. A thorough review of the literature reveals that foreign bias has not been thoroughly investigated in emerging countries, especially in the context of OIC countries.  The purpose of this research is to examine the determinants of foreign bias in the global portfolio investment of selected OIC countries. An unbalanced bilateral panel data of 12 OIC countries’ outward equity investment in 74 host countries from the year 2001 to 2016 is analyzed. Cross-sectional analysis shows that OIC countries exhibit higher foreign bias towards their OIC counterparts especially in the MENA region. The results suggest, OIC countries not only exhibit foreign bias but also demonstrate regional bias. System Generalized Method of Moments (GMM) empirically shows that foreign bias is possibly explained by factors related to financial market openness, familiarity, information asymmetry, and global financial crisis. This study has a significant implication for the investors, fund managers and the regulators of the OIC countries. Investors and fund managers in OIC countries should be aware of the existence of foreign bias in their global portfolio investment that may potentially reduce the benefits of optimal diversification. It is a call for policymakers in the OIC countries to convince their local investors that international portfolio diversification offers risk sharing and eventually increases investment return.
Peningkatan Hasil Belajar Bahasa Inggris Siswa Kelas II Sekolah Dasar Melalui Pendekatan Joyfull Learning Berbasis Picture Cards Digital
Authors: Kamil Muhammad Rahman , Safrul
Published: October 2023

Kegiatan belajar mengajar Bahasa Inggris di kelas II sudah cukup baik, namun siswa masih kurang tertarik dengan strategi yang diterapkan, hal ini disebabkan karena kurangnya media pembelajaran yang digunakan oleh guru, sehingga siswa kesulitan memahami materi pembelajaran dan berdampak pada penurunan hasil belajar siswa terhadap mata pelajaran Bahasa Inggris. Penelitian ini bertujuan untuk menganalisis dampak pendekatan joyfull learning berbasis picture cards digital terhadap hasil belajar siswa kelas II mata pelajaran Bahasa Inggris pada materi animals. Penelitian dilaksanakan pada semester II. Subjek penelitian ini berjumlah 30 siswa, terdiri dari 15 siswa laki-laki dan 15 siswa perempuan. Metode yang digunakan adalah Penelitian Tindakan Kelas (Classroom Action Research) model Kemmis & MC Taggart dengan 4 tahap, perencanaan, pelaksanaan, observasi, dan refleksi. Intsrumen yang digunakan untuk mengukur hasil belajar siswa yaitu tes pengetahuan dan tes keterampilan. Hasil penelitian menunjukkan bahwa pendekatan joyfull learning berbasis picture cards digital dapat meningkatkan hasil belajar siswa kelas II sekolah dasar pada mata pelajaran Bahasa Inggris materi animals. Hal ini dibuktikan dengan hasil belajar siswa yang telah mencapai Kriteria Ketuntasan Minimum pada siklus I dan siklus II dengan presentase sebesar 60,71%; 21,42% dan 82,14%; 71,42%. Dapat disimpulkan bahwa pendekatan joyfull learning berbasis picture cards digital pada mata pelajaran Bahasa Inggris materi animals dapat meningkatkan prestasi belajar siswa.
Kesulitan Membaca Kata Anak Disleksia Usia 7-12 Tahun di Sekolah Dasar
Authors: Budiani Luh , Putrayasa Ida Bagus
Published: October 2023

Kesulitan membaca kata disleksia pada siswa sekolah dasar terutama dikelas rendah. Tujuan penelitian ini untuk menganalisis kesulitan membaca kata anak disleksia usia 7-12 tahun disekolah SD. Jenis penelitian ini adalah kualitatif. Teknik pengumpulan data dilakukan dengan tes, checklist, dan wawancara. Analisis data menggunakan analisis kualitatif. Hasil penelitian ini menunjukkan bahwa: terdapat kesulitan-kesulitan membaca kata dikelas satu seperti sulit membaca /memproses fonologi sehingga kurang mampu membaca (decode), mengeja kata (encode), berbicara (syintax); terdapat kendala-kendala penyebab disleksia yaitu faktor gen (hereditas), lingkungan, cahaya yang mengakibatkan sindrom irlen, kerusakan neorologis, artikulasi. Implikasi disleksia mengelak dari membuat kerja sekolah, menggunakan strategi-strategi seperti menyalin kerja anak-anak lain untuk menyembunyikan masalah, menyadari sesuatu yang “tidak kena” tetapi tidak dapat memahaminya, coba menyembunyikan kesukarannya. Kesimpulan dengan adanya kesulitan membaca kata anak disleksia terdapat upaya-upaya yang dilakukan guru untuk siswa disleksia seperti intervensi, toleransi, dispensasi, multisensori, metode gilingham, clinical teaching, alat bantu seperti buku-buku bergambar, remidial teaching, memperhatikan perkembangan sosial emosional anak agar siswa disleksia tidak mengalami demotivasi belajar dan kefrustasian yang bisa membawanya pada kesulitan-kesulitan lain.
Upaya Meningkatkan Hasil Belajar IPA Materi Siklus Air Menggunakan Media Gambar pada Siswa Kelas V Sekolah Dasar
Authors: Nisa Nurul , Au Hurit Andreas , Bari Anne Ansyalina
Published: October 2023

Masih belum tuntasnya hasil belajar siswa pada materi siklus air, menjadi alasan penelitian yang bertujuan untuk mengkaji peran media gambar terhadap hasil belajar materi siklus air dilakukan. Jenis penelitian yang dialkukan adalah penelitian tindakan kelas yang terdiri atas tiga tahapan yaitu, perncanaan, pelaksanaan dan refleksi. Subjek penelitian ini siswa kelas V yang berjumlah 24 siswa. Metode pengumpulan data yang digunkan adalah tes dan lembar observasi. analisis data dilakukan dengan membandingkan nilai siswa dari hasil tes dengan KKM yang telah ditetapkan oleh sekolah, yaitu KKM 70. Hasil penelitian menunjukkan bahwa dengan adanya media gambar dapat meningktkan hasil belajar pada materi siklus air. Hal ini ditunjukan dari peningkatkan jumlah siswa yang tuntas dari prasiklus sampai siklus II. Dimana dalam siklus 1 masih ditemukan bebera kendala dalam proses pembelajaran sehingga menyebakan masih ada 5 orang siswa yang belum tuntas, disebabkan karena pada penelitian ini, terlihat bahwa guru masih kurang memperhatikan siswa pada saat pembelajaran dan beberapa siswa terlambat mengikuti pembelajaran, mengakibatkan mereka tidak mendengarkan penjelasan guru dengan baik. Jadi bisa di rekomadasikan bahwa media gambar bisa digunkan sebagai salah satu alternatif medai pembelajaran untuk siklus air.
Efikasi Herbisida Isopropilamina Glifosat 480 g/l pada Gulma Persiapan Tanam dan Pengaruhnya terhadap Tanaman Serta Hasil Padi Sawah Tanpa Olah Tanah
Authors: Rifa'i Thaher , Susanto Herry , Nurmauli Niar , Pujisiswanto Hidayat
Published: October 2023

One of the efforts to control weeds in preparing land for lowland rice cultivation with the No-Tillage system one of which uses isopropylamineglyphosate herbicide. The purpose of this study was to determine the dose of glyphosate herbicide that effectively controls weeds for preparation of lowland rice planting with the no tillage system, to determine changes in weed composition in lowland rice after the application of glyphosate herbicide, and to determine the effect of the no tillage system after the application of glyphosate herbicide on growth and paddy yields. Data collection was carried out from June to September 2022 in the rice fields of Trimurjo District, Central Lampung Regency and the Weed Science Laboratory, Faculty of Agriculture, University of Lampung. The treatment was arranged using a randomized block design with 4 replications and 6 treatments consisting of the glyphosate herbicide doses (1,080; 1,440; 1,800; 2,160 g/ha) + no tillage, manual weeding, and intensive tillage system. Homogeneity of variance was tested by Barlett's test and then analyzed for variance. Separation of the mean was carried out using the least significant difference test (LSD) at the 5% level. The results showed that the herbicide isopropylamine glyphosate doses of 1,800 and 2,160 g/ha of the no tillage system could be used to replace the intensive tillage system because it was effective in controlling total weeds, sedges, grasses, and broad leaf groups, dominant weed Fimbristylis miliacea, Echinochloa colonum, Ludwigia octovalvis and Monochoria vaginalis up to 6 WAP, causing a change in the composition of weed species from Echinochloa colonum become monochoria vaginalis at 3 WAP, and from Echinochloa colonum become Ludwigia octovalvis at 6 WAP. The growth  is not stunted and yield of lowland rice plants is equivalent to the intensive tillage system with grain yields per hectare of 5.14 - 5.49 t/ha. Key words : weeds, isopropylamine glyphosate, paddy field, no tillage
Pengaruh frekuensi pemupukan setelah forcing terhadap produktivitas buah tanaman nanas (Ananas comosis [L.] Merr.)
Authors: Azizah Nur , Widyatuti R. A. Diana , Karyanto Agus , Ginting Yohannes Cahya
Published: October 2023

Pineapple (Ananas comosus [L.] Merr) is one of the potential horticultural commodities and is a mainstay of exports in Indonesia.  Pineapple fruit productivity can be increased through the fertilization process. One of the fertilization processes in pineapple plants is fertilization after forcing.  The nutrients needed by pineapple plants after forcing are nitrogen and potassium which can support plant growth and increase pineapple fruit production. The purpose of this study was to determine the effect of the frequency of fertilization after forcing and to find out which treatment had the highest productivity. The research was conducted from October 2022 to April 2023 at the Central Lampung Pineapple Plantation, Lampung Province. This study used a single factor randomized block design (RBD), namely the frequency of fertilization on the day after forcing (HSF). The treatment consisted of four levels, namely twice fertilization given at 20 and 55 HSF (P1), two times fertilization given at 15 and 30 HSF (P2), three times fertilization given at 15, 30, 45 HSF (P3) and four times of fertilization given at 15, 30, 45, 60 HSF (P4). Each fertilization application uses Urea 50 kg/ha and K2SO4 75 kg/ha. Each treatment was repeated four times to obtain 16 experimental units. The results showed that the frequency of fertilization after forcing had an effect on the weight of 12 eyed fruit, the length of 11 and 12 eyed fruit, the diameter of 12 eyed fruit, and the weight of 12 eyed crowns in pineapple plants. The fertilization that was able to produce the best pineapple fruit productivity was fertilization with twice the frequency at 15 HSF and 30 HSF which produced the highest production potential compared to the control treatment with a difference of 2.51%.Keywords : pineapple, fertilization, HSF (Days After Forcing)
Hasil Benih dan Polong Segar Buncis (Phaseolus vulgaris L.) yang Dipanen dari Pertanaman Tumpangsari dengan Sorgum (Sorghum bicolor [L.] Moench) dan Monokultur
Authors: Pramono Eko , Kurniawati V D , Utomo Setyo Dwi , Ginting Yohannes Cahya
Published: October 2023

Bean (Phaseolus vulgaris L.) is generally cultivated in monoculture (sole cropping) by farmers in the highlands as main crops. Increasing land use efficiency (LUE) by inter-cropping sorghum on bean requires certain cultivation techniques so as not reducing the production of seeds or fresh fruit bean. This experiment aimed at determine 1) the yields of seeds and fresh pods harvested from the bean-sorghum intercropping compared to those from the sole cropping and 2) the LUE of the bean-sorghum intercropping.  The research, which was conducted during April-September 2021 in Sekincau District, West Lampung Regency, Lampung Province, Indonesia used dwarf beans Balitsa-2 variety and climbing bean Horti-3 variety, each of which to be intercropped with sorghum of Numbu variety. Five levels of cropping system treatment were arranged in a Completely Randomized Block Design (CRBD) with six groups as six replications. The results showed that there was no difference the seeds yield and fresh pods of bean between those harvested from bean-sorghum intercropping and from monocultures. The seed yield harvested from the dwarf bean-sorghum intercropping was higher, whereas those harvested from the climbing bean-sorghum intercropping was lower, respectively, compared to those harvested from the monoculture. In producing fresh pods, intercroppings of dwarf bean-sorghum and climbing bean-sorghum increased the LUE, respectively. Whereas in producing seeds, the dwarf bean-sorghum intercropping increased the LUE, but the climbing bean-sorghum intercropping decreased the LUE. Key words : bean, fresh pods, intercropping, seeds, sorghum
Respons Pertumbuhan Planlets Anggrek Phalaenopsis terhadap Pemberian BA dan NAA Selama Aklimatisasi
Authors: Arianbach Achmad Fatih , Saputra Herry Marta , Zasari Maera
Published: October 2023

Orchid plants are a type of plant that belongs to the Orchidaceae family which has approximately 900 genera and estimated to have 15.000- 25.000 species. Orchid plants can be cultivated vegetative and generative. Tissue culture is one of the vegetative propagation methods of orchids. Acclimatization is a critical period for tissue cultured plantlets. Acclimatization is a critical period for plantlets resulting from tissue culture. Plant growth regulators can help stimulate plantlet growth during the acclimatization period. growth regulators is one of the success factors in acclimatization. This study aims to determine the best BA and NAA concentrations and the best treatment combination for acclimatization of Phalaenopsis orchids. This research was conducted from March to July 2022 at the Research and Experimental station, University of Bangka Belitung. This study used a factorial randomized block design (RBD). The factors tested were the concentrations of BA and NAA solutions. The results showed that the acclimatization of Phalaenopsis orchids was successful, indicated by the high percentage of plantlet survival. The highest average growth was shown at concentrations of 10 ppm BA and 10 ppm NAA. The treatment combination showing the highest average growth was BA 20 + NAA 10 ppm.Keywords : Acclimatization, BA, NAA, Phalaenopsis
Upaya Pengelolaan Lingkungan – Upaya Pemantauan Lingkungan (UPL-UKL) jaringan irigasi Daerah Rawa Irigasi (DIR) Rantau Durian 2
Authors: Hamid Edy , Wardono Herry , Septiana Trisya
Published: October 2023

Dalam rangka meningkatkan produksi hasil pertanian dan mendukung pemenuhan pangan nasional,pengembangan lahan pertanian secara terpadu dan menyeluruh dilakukan dengan membangun daerah irigasi berikut jaringan irigasinya untuk menjamin  ketersediaan air pertanian.Dengan adanya bangunan Irigasi Tersebut terutama di saluran sekundernya dapat mengatur tinggi rendah nya debit air yang ada di persawahan yaitu dengan membuat bangunan pintu air di saluran sekunder,sehingga pada ssat musim kemarau air tidak kering dan pada musim hujan air tidak membanjiri sawah tersebut.terbatasnya lahan mengingat sebagian besar wilayah di Kabupaten OKI berupa daerah rawa maka pemerintah Daerah Kabupaten Ogan Komering Ilir melalui Dinas Pekerjaan Umum dan Penataan Ruang mengembangkan daerah rawa menjadi daerah irigasi lengkap dengan jaringan irigasi dan fasilitas penunjang lainnya. Kegiatan Pembangunan Daerah Irigasi di Kabupaten OKI .

Menyadari dampak yang dapat terjadi akibat adanya rencana pembangunan tersebut, maka sejalan dengan Peraturan Pemerintah Republik Indonesia yang tertuang dalam Undang-Undang Nomor 32 tahun 2009 tentang Perlindungan dan Pengelolaan Lingkungan Hidup bahwa setiap usaha dan atau kegiatan yang menimbulkan dampak penting terhadap lingkungan hidup wajib dilengkapi dengan dokumen Analisis Mengenai Dampak Lingkungan (AMDAL), serta sesuai dengan Peraturan Menteri Lingkungan Hidup No. 5 tahun 2012 tentang Jenis Usaha dan/atau Kegiatan yang Wajib Memiliki AMDAL, sementara AMDAL hanya diperuntukan untuk kegiatan seluas > 1000 ha, sedangkan kegiatan ini memiliki luas  420  ha. Maka kegiatan ini tidak diwajibkan memiliki Dokumen AMDAL akan tetapi diwajibkan menyusun dokumen Upaya Pengelolaan Lingkungan Hidup dan Upaya Pemantauan Lingkungan (UKL-UPL).
PENYUSUNAN MASTERPLAN AGROWISATA KABUPATEN LAMPUNG SELATAN
Authors: Saruhian Aryan , Waluyo Sri , Widyawati Ratna
Published: October 2023

Agrowisata merupakan salah satu bentuk ekonomi kreatif di sektor pertanian yang dapat memberikan nilai tambah bagi usaha agribisnis dalam rangka peningkatan kesejahteraan petani. Beberapa dampak positif pengembangan agrowisata antara lain meningkatkan nilai jual komoditi pertanian yang dihasilkan dan berkembangnya sumber sumber pendapatan lainnya yang dapat dinikmati oleh masyarakat setempat seperti penyewaan homestay dan lain lain.

Pembuatan Agrowisata Kalianda pada tahun 2020 ini dimulai dengan pembuatan masterplan Agrowisata Kalianda. Rencana Induk (Masterplan) Agrowisata kalianda disusun dalam rangka pengembangan terhadap kegiatan pembuatan Agrowisata Kalianda. Oleh karena itu, kegiatan penyusunan Masterplan Agrowisata Kalianda Kabupaten Lampung Selatan ini menjadi langkah awal terwujudnya Agrowisata Kalianda. Tujuan pelaksanaan kegiatan ini adalah melakukan penyusunan Masterplan Agrowisata Kalianda di Kabupaten Lampung Selatan sebagai langkah awal pembuatan Agrowisata Kalianda.

Masterplan Agrowisata ini meliputi sektor perkebunan, pertanian, dan perikanan yang diimplementasikan ke dalam 5 zona yakni Zona A (Entrance), Zona B (Pertanian), Zona C (Taman Bunga), Zona D (Embung), dan Zona E (Perikanan dan Kolam Renang). Zona A (Entrance) mencerminkan ciri khas Lampung Selatan. Zona B (Pertanian) mencakup beberapa tanaman seperti durian, kelengkeng, jambu air, dan kelapa puan. Zona C (Taman Bunga) terdiri dari aneka bunga dan dilengkapi dengan menara pandang setinggi 16 m yang mampu menjangkau seluruh kawasan perencanaan. Zona D (Embung) terdapat embung permanen seluas 500 m2 dengan kedalaman 3 m. Zona terakhir yakni Zona E (Perikanan dan Kolam Renang). Di zona ini terdapat beraneka macam kolam ikan serta kolam renang baik untuk dewasa maupun anak-anak. Secara teknis masterplan agrowisata dapat dilaksanakan.
Identifikasi Jenis Kerusakan Jalan Studi Kasus Ruas Jalan Sumber Jaya – Batas Waykanan, Kabupaten Ogan Komering Ulu Selatan
Authors: Heriyanto Heriyanto , Suharno Suharno , Haerudin Nandi
Published: October 2023

Jalan merupakan salah satu jenis prasarana transportasi darat yang memegang peranan penting bagi  pengembangan  suatu  daerah. Ruas  jalan  Jalan Sumber Jaya – Batas Waykanan  merupakan  jalan Kolektor Kabupaten yang mempunyai frekwensi lalu lintas sedang sebagai penghubung Kabupaten OKU selatan dengan Kabupaten Waykanan. penelitian ini bermaksud mengetahui jenis kerusakan jalan di Ruas Jalan Sumber Jaya - Batas Way Kanan, Kabupaten Ogan Komering Ulu Selatan. Data yang digunakan dalam penelitian adalah data primer dan data sekunder. Data primer didapatkan melalui survei kondisi jalan dengan pengukuran kerusakan jalan, sedangkan data sekunder didapatkan dari bidang bina marga Dinas PU-TR Kabupaten Ogan Komering Ulu Selatan yaitu, SK jalan Kabupaten Ogan Komering Ulu Selatan dan peta jalan Kabupaten Ogan Komering Ulu Selatan. Tahapan penelitian yaitu, identifikasi kerusakan jalan dengan melakukan pengukuran, rekapitulasi data dengan mengolah hasil survei, analisis data dengan metode SDI (Surface Distress Index). Jenis kerusakan yang mendominasi pada ruas jalan tersebut berupa  retak rambut dan retak kulit buaya sebesar  743 m2 atau 44,98 % dari total kerusakan yang terjadi sepanjang ruas jalan tersebut. kerusakan retak rambut dapat meresapkan air kedalam lapis permukaan. Retak rambut dapat berkembang menjadi retak kulit buaya. Retak kulit buaya dapat diresapi pula oleh air sehingga jika tidak segera ditangani dapat mengakibatkan terjadinya lubang–lubang kecil akibat terlepasnya butir-butir. Hal ini akan mengakibatkan sangat tidak nyamannya pengendara menggunakan jalan tersebut.
PERENCANAAN PERKUATAN LERENG DENGAN PEMAKUAN TANAH (SOIL NAILING) SEBAGAI SOLUSI DALAM PENANGANAN TANAH LONGSOR
Authors: Hermansyah Ikhtiyan , Despa Dikpride , Septiana Trisya
Published: October 2023

Pelaksanaan pembangunan suatu proyek membutuhkan penggunaan metode pelaksanaan yang tepat, praktis, dan aman agar penyelesaian pekerjaan proyek dapat berjalan sesuai dengan target waktu, biaya dan mutu yang telah direncanakan. Konstruksi lereng yang mantap dan sesuai dengan syarat keamanan memegang peran penting dalam suatu pembangunan. Dalam proyek ini proses perbaikan lereng perlu diperhatikan pemilihan metodenya. Jika metode pelaksanaan yang baik sesuai dengan kondisi lapangan berhasil diterapkan, akan menguntungkan proyek itu sendiri (Debora dkk, 2022). Analisis stabilitas lereng dan kecocokan terhadap metode perkuatan lereng agar tidak terjadi longsor mempunyai peran yang sangat penting pada perencanaan konstruksi-konstruksi sipil.  Soil Nailing adalah teknik konstruksi yang dapat digunakan sebagai ukuran perbaikan untuk mengobati lereng tanah alami tidak stabil atau yang memungkinkan aman dari keruntuhan lereng. Untuk kondisi tertentu, soil nailing menawarkan alternatif dari sudut pandang kelayakan teknis, biaya konstruksi, dan durasi konstruksi.  Salah satu metode yang dapat digunakan untuk menjadikan suatu tebing lebih stabil terhadap tekanan tanah adalah dengan pemakuan tanah “soil nailing”. Soil nailing termasuk kategori perkuatan kaku (rigid) yang dapat memikul gaya normal, gaya lintang dan gaya momen. Kontrol utama terhadap pemakuan tanah adalah hasil dari pull out Soil Nailing merupakan solusi potensial dari masalah longsor karena ekonomis dan juga berlaku di zona seismik. Pemakuan tanah dapat memecahkan masalah lereng terjal, pada daerah yang sebagian besar perumahan, akibat pemasangan tidak membutuhkan lahan yang luas serta dapat digunakan untuk berbagai jenis tanah (I Nengah Sinarta, 2014). Soil nailing merupakan solusi potensial dari masalah longsor karena ekonomis dan juga berlaku di zona seismik. Hal ini dapat memecahkan masalah daerah yang sebagian besar perumahan, akibat pemasangan tidak membutuhkan lahan yang luas serta dapat digunakan untuk berbagai jenis tanah. Namun dari hasil penelitian penulis menyarankan agar menggunakan sistem soil nailing pada suatu lokasi digunakan dengan jumlah yang banyak agar setiap titik tekan terwakilkan dan juga harus disertakan sistem drainase.
Analisa Kegiatan Program Kerjasama Antara TNI dan Pemerintah Daerah Kabupaten Ogan Komering Ulu Selatan Studi Kasus Kegiatan Ruas Jalan Menuju Desa Pematang Obar
Authors: Suryanegara Hidayat , Wardono Herry , Armijon Armijon
Published: October 2023

Pembangunan desa sangat vital bagi pertumbuhan daerah dan nasional. Desa adalah tingkat pemerintahan terendah, tetapi berada di garis depan masyarakat. Agenda pembangunan pemerintah akan selalu melibatkan masyarakat. Pelaksaaan Program pembangunan ini memerlukan penggabungan antara instansi dan kerjasama pemangku kepentingan. Tentara Nasinal Indonesia (TNI) dapat bekerjasama  dengan pemangku kepentingan desa. Pasal 7 ayat 2b no.9 UU 34 Tahun 2004 tentang TNI menyatakan bahwa tujuan pokok TNI adalah membantu pemerintah daerah dalam kegiatan militer nonperang. Desa Berkembang TNI Manunggal (TMMD) merupakan salah satu bentuk Operasi TNI Bhakti, program terpadu lintas sektoral antara TNI dengan Departemen, Lembaga Pemerintah Non Departemen, Pemerintah Daerah, dan komponen bangsa lainnya, yang dilakukan bersama masyarakat untuk percepatan pembangunan di Indonesia. Perdesaan tertinggal, berbatasan, dan kumuh. Penelitian ini mengevaluasi program TMMD di Desa Pematang Obar Kecamatan Pulau Beringin Kabupaten Ogan Komering Ulu Selatan dengan menggunakan teori William N. Dunn yang memuat enam indikator yaitu efektivitas, efisiensi, kecukupan, pemerataan, daya tanggap, dan ketepatan. Deskriptif, penelitian kualitatif digunakan. Wawancara, observasi, dan dokumentasi memperoleh data. Hasil penelitian menunjukkan bahwa penerapan program TMMD Desa Pematang Obar Kabupaten Ogan Komering Ulu Selatan telah berjalan cukup baik dan memenuhi enam indikator evaluasi kebijakan. Kegiatan TMMD ini dinilai baik dalam meningkatkan kesejahteraan masyarakat dan kegiatan ini sangat bermanfaat bagi masyarakat dan hasil yang sudah terlaksanakan bisa dijaga dengan baik oleh masyarakat dan dapat dikembangankan lagi oleh masyarakat setempat.