bluuebunny/crossref_metadata_2025 huggingface dataset:
Public Expressions of Religion among Yogyakarta's Salafi Muslimah
Authors: Marhumah Marhumah , Muyyassaroh Iffah Khoiriyatul , Sciortino Rosalia
Published: December 2024

This study examines the manifestation of righteousness in public spaces among Salafi Muslim female students participating in Islamic study groups at four major universities in Yogyakarta, Indonesia. Using a qualitative case study approach, data were collected through six months of participant observation and in-depth interviews with eight key informants. The research explores how Salafi Muslim women internalize, negotiate, and practice hadith teachings daily, particularly in public settings. The findings reveal that these study groups significantly shape individual and collective expressions of piety. Participants exhibit varied approaches to negotiating religious teachings, with some finding clarity and structure, while others experience ambiguities, creating space for personal interpretation. This variation underscores the complex relationship between religious texts and individual agency, aligning with theoretical perspectives on spiritual practice. Additionally, the study highlights the importance of these groups in reinforcing social identities and facilitating engagement in public spaces. The research contributes to broader discussions on religious agency and public piety, providing insights into how Salafi Muslim women navigate the intersection of spiritual devotion and modern public life. Limitations include the focus on a specific group and reliance on self-reported data. Future studies should explore how piety is expressed across social and cultural contexts to deepen understanding of its role in public participation.
Supporting Students on Placement to Develop a Diligent Attitude to Social Work Student Supervision
Authors: Beesley Paula
Published: December 2024

Social work students in England undertake two placements in their qualifying course. They are supported by a practice educator, who provides regular (often weekly) supervision. This is a protected time for students to explore their learning from their practice, but as it is undertaken in a private space it is rarely subject to scrutiny. The objective of the research was to identify what contributed to the development of knowledge and skills in social work student supervision. The methodology was a Narrative Inquiry, which enabled the use of a range of data collection methods: eight supervisions were observed and audio recorded, creating supervision transcripts and field notes, and both supervision participants were interviewed immediately afterwards. A theme of diligence was identified, where a commitment to and organisation for and within social work student supervision by both parties was critical. This article will focus on the finding that students became more diligent as they developed an understanding that supervision would enhance their knowledge and skills. It will offer recommendations for students, practice educators and social work educators that support students’ development of a diligent attitude to social work student supervision.
Strategies to use online forums to teach social work students critical reflection
Authors: Haider Sharif
Published: December 2024

Without critical reflection, social work students would struggle to improve their social work practice. This skill is thus regarded as a significant aspect of social work training. The literature on social work covers the importance of critical reflection and presents a number of frameworks for how to reflect critically, but how this skill should be taught given its complexity and sensitivity has not been investigated, in particular as regards distance learning students. This skill is essential not only for students’ academic work but for their whole careers. This paper therefore presents a research study that explores strategies used by social work tutors in online forums to teach critical reflection at a distance. The participants were 15 tutors from a distance learning social work course in England who applied a number of teaching techniques to engage their distance learning students in becoming critically reflective. This research suggests that the role of tutors is pivotal in enabling social work students to acquire the skill of critical reflection. They play a number of roles in supporting students academically, emotionally and practically, acting as facilitators, educators, assessors, guides, mentors and coaches. The paper concludes with a discussion of the practical implications.
Automatic transportation process control systems with an extended data analytics circuit
Authors: Dolgiy Aleksandr , Kovalev Sergey
Published: December 2024

A new hybrid approach has been proposed to automate the management of complex technological processes at railway stations of industrial transport using intelligent monitoring technologies. This approach is based on the concept of predictive modeling combined with methods of statistical analysis, including a modification of the principal components analysis method for multivariate statistical analysis and the identification of violations in technological processes using a combination of well-known methods such as contribution analysis and fuzzy dynamic analysis. The principal feature of the hybrid approach is mapping the initial space of numerical parameters of the technological process onto a new space formed by fuzzy rules of an evolving system model. Applying multivariate analysis to new system variables using the principal component method allows for the formation of a few intermediate variables with different degrees of granularity and interpretability, describing the behavior of the controlled process, which makes it possible to develop mathematical models and algorithms for solving various monitoring tasks An example of using this approach for post-processing monitoring data to identify performance discrepancies in a marshalling yard and anomalies in the controlled process is considered.
Autonomous UAV guidance using computer vision: the problem of precise rudder control
Authors: Sacyuk Aleksandr , Shvalov Dmitriy
Published: December 2024

the development of a mathematical model of autonomous guidance for unmanned aerial vehicles based on computer vision is presented. The model uses a nonlinear response function with dynamic variation of the nonlinearity coefficient depending on the distance to the target, which improves the accuracy and stability of unmanned aerial vehicle guidance given different flight conditions and target characteristics. The problem of video frame aspect ratio mismatch is also considered and methods for normalizing the coordinates of the square on the screen to ensure uniform and predicable unmanned aerial vehicle response are proposed. As a result, an improved adaptive mathematical model is developed that provides more efficient motion control for the unmanned aerial vehicle, allowing it to accurately track the target and keep it in the center of the frame under different flight conditions.
On the possibility of increasing the statistical significance of regression dependencies in the problems of processing smallvolume experimental samples
Authors: Grachev Vladimir , Shvarc Mihail , Grischenko Aleksandr , Shvarc Filipp
Published: December 2024

The article considers the problem of increasing the reliability and statistical significance of regression models of research objects built on small experimental data samples. Insufficient amount of experimental data forces the researcher to use linear models with a minimum number of variable factors, however, even with such a choice of the type of model, insufficient statistical significance of parameter estimates excludes the possibility of using it for reliable forecasting of changes in the explained variables. In order to expand the possibility of choosing the type of model at the specification stage and to increase the statistical significance of its parameter estimates, it is proposed to expand the volume of experimental data using a statistical model of the object of study, built on the basis of a generative adversarial neural network. When training on a small sample obtained during an experimental study of the object, the generator of a conditional generative adversarial network generates data clusters with centroids corresponding to the points of the training (experimental) sample. The results of the analysis of the data of a physical experiment are presented, confirming its main provisions.
The methodology of conducting a rating assessment of cities to determine the feasibility of locating polygon level transportation control centers
Authors: Sugorovskiy Anton , Sugorovskiy Artem
Published: December 2024

The transition to end-to-end management principles in the creation of polygon technologies entails the creation of polygon-level transportation control centers, which raises the question of determining the feasibility of their location in a particular city. The article proposes a methodology for conducting a rating assessment of cities to determine the feasibility of placing polygon-level transportation control centers in them. In accordance with the methodology, an assessment was made based on the following key indicators: the volume of total freight traffic on oads, qualitative indicators of road performance (performance analysis), functional specialization of dispatch centers for transportation management, level of education, level of material well-being, housing availability, quality of life, production resources, and labor resources. The significant factors were analyzed, calculated according to the proposed methodology and results were obtained based on production, social and operational factors. The complex calculation was carried out for cities in which dispatch transportation control centers are already located; an example of modeling is shown for the Eastern Polygon. The methodology and results of the study can be used to determine the feasibility of placing polygon-level transportation control centers on other polygons of the railway network.
Antihypertensive Treatment Compliance in Stroke Patients With Hypertension
Authors: Tekin Taşkıran Esra , Öztürk Bilgin
Published: December 2024

Aim
Stroke is responsible for approximately 6 millions of all the annual deaths worldwide. An effective method to prevent stroke and its comorbidities is the adequate control of the risk factors. This study aimed to evaluate the compliance of stroke patients in their antihypertensive treatment and the frequency of measuring blood pressure.
Material and methods
Patient’s files were retrieved from the hospital patients database using the ICD codes (I60-64, I67-69). In total, 5289 files were accessed. The age, sex, hypertension diagnosis, treatment compliance, the frequency of blood pressure measurements, and the presence of hypertensive crisis during admission were evaluated. Compliance with drug treatment and blood pressure monitoring was directly asked to patients, and when this was not possible, such as in patients with aphasia or coma, questions were asked to their relatives.
Results
In this study, 478 files (female: male, 201 (42.1%):277 (57.9%)) with complete data were included. Among the patients, 76.3% had a good to very good treatment compliance and 29.8% had a good to very good frequency of blood pressure measurement. During admission, 23% of patients were in hypertensive crisis.
Discussion
In patients with poor drug compliance and who did not have their blood pressure regularly measured, hypertensive crises occurred significantly more often. Strict blood pressure monitoring and regular doctor follow-ups are neglected by patients.
Conclusion
Drug compliance is insufficient to prevent stroke and blood pressure monitoring and follow-ups are also important points to consider.
Anxiety-Depression and Sleep Quality in Healthcare Workers Working in the Covid Service During the Covid-19 Pandemic Period
Authors: Karaoğullarından Ayşe , Erkan Sanem Okşan , Tuhanioğlu Birgül , Kurt Mustafa , Kuran Gökhan , Görgülü Orhan
Published: December 2024

ABSTRACT
OBJECTİVE:: Covid-19 , which mainly causes respiratory tract infections, threatens the physical health of individuals and negatively affects their mental health. In this study we aim to examine the mental health and sleep quality of healthcare professionals working in the covid service during the Covid-19 pandemic.
MATERIAL AND METHOD: A total of 222 healthcare workers in XXXX Hospital, between the ages of 20 and 65 years, working in COVID and non-COVID wards, without any previous diagnosis of anxiety-depression and sleep disorders were included in the study. The BDI (Beck Depression Index) , and BAI (Beck Anksiety Index) , and PSQI (Pitsburg Sleep Quality Index) were applied to healthcare workers between February 15th, 2021 and March 15th, 2021. In addition, healthcare workers were divided into physicians, nurses, and allied health personnel (e.g. laboratory, technicians, cleaners) according to their profession. Those working in the COVID and non-COVID service were evaluated according to the PSQI, BDI , and BAI and compared with each other.
RESULTS: The depression scores of employees in the COVID service were observed to be higher (p=0.035). Although the total PSQI scores and Beck anxiety scores of employees working in the COVID service were higher than of those working in the non-COVID service, the difference was not statistically significant (p=0.19 and p=0.32, respectively).
CONCLUSION: This observational cross-sectional clinical study showed that working in the COVID service with patients with a high risk of infection caused psychological problems such as depression, anxiety, and sleep disorders in healthcare workers.
What dominates most? The opinion of preservice biology teachers about factors associated with motivation to conduct innovative learning
Authors: Sudrajat Ahmad Kamal , Anggrella Dita Purwinda , Nugroho Ahmad Iskak
Published: December 2024

This article discusses the views of preservice biology teachers regarding the factors that dominate their motivation for innovative learning. A total of 152 preservice biology teachers were involved in this study. A correlation test was conducted to determine the relationship between curriculum design, school design, and class design with motivation to implement innovative learning. Data was collected using a questionnaire. The study results show that curriculum, school, and class design are collectively related to the motivation of preservice biology teachers to carry out innovative learning. Based on further analysis, the curriculum design factors significantly contributed to this relationship, while school and classroom design did not contribute significantly to this relationship. These results show that good curriculum design will support implementing innovative learning in the classroom. We recommend some things related to curriculum, school, and class design, the essence of which is the need to seek advice from students and teachers when renovating or building a school. Technology integration is also an important thing to include in the design plan. The government and related parties can use the results of this study in designing their schools or classrooms.Abstrak. Artikel ini membahas pandangan calon guru biologi mengenai faktor-faktor yang mendominasi motivasi mereka untuk pembelajaran inovatif. Sebanyak 152 calon guru biologi terlibat dalam penelitian ini. Data dikumpulkan menggunakan questionairre. Uji korelasi dilakukan untuk mengetahui hubungan antara curriculum design, school design, dan classroom design dengan motivasi untuk melaksanaan pembelajaran inovatif. Hasil penelitian menunjukkan bahwa desain kurikulum, sekolah, dan kelas secara kolektif berkaitan dengan motivasi guru biologi prajabatan untuk melaksanakan pembelajaran inovatif. Berdasarkan analisis lebih lanjut, faktor desain kurikulum berkontribusi signifikan terhadap hubungan ini, sementara desain sekolah dan kelas tidak berkontribusi signifikan terhadap hubungan ini. Hal ini menunjukkan bahwa desain kurikulum yang baik akan menunjang implementasi pembelajaran inovatif di kelas. Kami merekomendasikan beberapa hal yang berkaitan dengan kurikulum, sekolah, dan desain kelas, yang intinya adalah perlunya meminta saran dari siswa dan guru ketika merenovasi atau membangun sekolah. Integrasi teknologi juga merupakan hal yang penting untuk dimasukkan dalam rencana desain. Pemerintah dan pihak terkait dapat menggunakan hasil penelitian ini dalam merancang sekolah atau ruang kelasnya.
Development of encyclopedia medicinal plants in the Natuna Malay community
Authors: Sarinah Sarinah , Sunandar Ari , Rahayu Hanum Mukti
Published: December 2024

The Malay people of the Natuna Regency still uphold the culture of utilizing medicinal plants. Medicinal plants have local potential that must be preserved. Preservation of medicinal plants can be done through local potential-based education presented in learning media. Integrating local potential presented in the encyclopedia learning media will certainly make it easier for students to understand the concept of the material they are learning. This research aims to develop a valid and practical Natuna Malay community medicinal plant encyclopedia using the 4D development model. The research instruments used were a validation questionnaire, response questionnaire, interview sheet and observation sheet. The subjects in this study were students of class X MIPA 1 and X MIPA 2 (28 students). The results show that the encyclopedia has a validity level from material experts of 98.88% (very valid), media experts of 99.52% (very valid) and language experts of 88.33% (very valid). Based on the results of the student response in the small-scale trial, the practicality level was 81.62% (positive), and the large-scale trial was 98% (very positive). This shows that the encyclopedia of medicinal plants of the Natuna Malay community is very feasible to use as a learning media for students on biodiversity material, and this encyclopedia media can also serve as a means of preserving the local wisdom of the Natuna Malay community in utilizing plants as independent medicine.Abstrak. Masyarakat Melayu Kabupaten Natuna masih menjunjung tinggi budaya memanfaatkan tanaman obat. Tumbuhan obat merupakan potensi lokal yang harus dilestarikan. Pelestarian tumbuhan obat dapat dilakukan melalui pendidikan berbasis potensi lokal yang disajikan dalam media pembelajaran. Dengan mengintegrasikan potensi lokal yang disajikan dalam media pembelajaran ensiklopedia tentunya akan memudahkan siswa dalam memahami konsep materi yang dipelajarinya. Penelitian ini bertujuan untuk mengembangkan ensiklopedia tumbuhan obat masyarakat Melayu Natuna yang valid dan praktis dengan menggunakan model pengembangan 4D. Instrumen penelitian yang digunakan adalah angket validasi, angket respon, lembar wawancara dan lembar observasi. Subjek dalam penelitian ini adalah siswa kelas X MIPA 1 dan X MIPA 2 yang berjumlah 28 siswa. Hasil penelitian menunjukkan ensiklopedia memiliki tingkat validitas dari ahli materi sebesar 98,88% (sangat valid), ahli media sebesar 99,52% (sangat valid) dan ahli bahasa sebesar 88,33% (sangat valid). Tingkat kepraktisan berdasarkan hasil respon siswa pada uji coba skala kecil sebesar 81,62% (positif) dan uji coba skala besar sebesar 98% (sangat positif). Hal ini menunjukkan bahwa ensiklopedia tanaman berkhasiat obat masyarakat Melayu Natuna sangat layak digunakan sebagai media pembelajaran peserta didik pada materi keanekaragamn hayati dan media ensiklopedia ini juga dapat berfungsi sebagai sarana pelestarian kearifan lokal masyarakat Melayu Natuna dalam memanfaatkan tumbuhan sebagai pengobatan mandiri.
Development of an encyclopedia of flora and fauna motifs in Singkawang hand-written batik as a biology learning resource
Authors: Ramanda Perabela , Qurbaniah Mahwar , Setiadi Anandita Eka
Published: December 2024

Singkawang City has biodiversity that inspires motifs in Singkawang batik. In order to introduce batik tulis in the city of Singkawang, an encyclopedia media was developed on biodiversity material. This study aims to develop an encyclopedia of flora and fauna motifs of Singkawang hand-written batik by measuring the level of validity and student response to the encyclopedia. This research uses the R&D method with the 4D development model, which consists of defining, designing, developing, and disseminating. Data collection using interviews, observations, questionnaires, and documentation, analyzed with descriptive techniques. The results showed the average validation score in the very valid category, in the media aspect (98.81%), material aspect (98.25%) and language aspect (84.72%). The media was considered practical with very strong criteria based on student responses with an average of 88.78% in the small-scale trial and 96.57% in the large-scale trial. It is concluded that the encyclopedia media of flora and fauna motifs of Singkawang hand-written batik is very valid and very strong from students. The existence of this encyclopedia media is expected to increase public knowledge, especially the younger generation in Singkawang City about the flora and fauna motifs of Singkawang hand-written batik, so that they are able to maintain and preserve hand-written batik in Singkawang city.Abstrak. Kota Singkawang memiliki keanekaragaman hayati yang menginspirasi motif pada batik tulis Singkawang. Demi memperkenalkan batik tulis yang ada di kota Singkawang maka di kembangkan media ensiklopedia pada materi keanekaramanan hayati. Penelitian ini bertujuan untuk mengembangkan ensiklopedia corak motif flora dan fauna batik tulis Singkawang dengan mengukur tingkat kevalidan dan respon siswa terhadap ensiklopedia. Penelitian ini menggunakan metode R&D dengan model pengembangan 4D, yang terdiri dari pendefinisian, perancangan, pengembangan, dan penyebaran. Pengumpulan data menggunakan wawancara, observasi, angket, dan dokumentasi, dianalisis dengan teknik deskriptif. Hasil penelitian menunjukkan rata-rata nilai validasi pada kategori sangat valid, pada aspek media (98,81%), aspek materi (98,25%) dan aspek bahasa (84,72%). Media tersebut dinilai praktis dengan kriteria sangat kuat berdasarkan respon siswa dengan rata-rata 88,78% pada uji coba skala kecil dan 96,57% pada uji coba skala besar. Disimpulkan bahwa media ensiklopedia corak motif flora dan fauna batik tulis Singkawang sangat valid dan sangat kuat dari siswa. Adanya media ensiklopedia ini diharapkan menambah pengetahuan masyarakat khususnya generasi muda di Kota Singkawang mengenai corak motif flora dan fauna batik tulis Singkawang, sehingga mampu menjaga dan melestarikan batik tulis yang ada di kota Singkawang.
The analysis of last year junior high school students’ scientific literacy in biology topics
Authors: Nefianthi Rezky , Dwinanda Wahab Muhammad Novaldy Nur
Published: December 2024

The urgency of this study lies in the importance of science literacy assessment to reflect the quality of the learning process, especially in biology topics that require laboratory skills related to science literacy. This study used a quantitative descriptive analysis approach to analyze and compare the level of science literacy of junior high school students in biology topics. The assessment tool in this study was developed based on PISA indicators to measure students' science literacy. Data collection was conducted using purposive sampling technique to obtain samples from two different junior high schools. Based on the results of the study of 134 students from two classes in each school, it was found that 113 students still had below average science literacy skills, while only 21 students were above average. Students with above-average scores were at levels 5 and 6, while students with below-average scores were at levels 2, 3, and 4. This study shows that there needs to be special attention from teachers to focus more on developing students' science literacy. The scientific implication in the future is to improve the quality of the learning process to develop students' science literacy, especially on the topic of biology.Abstrak. Urgensi penelitian ini terletak pada pentingnya penilaian literasi sains untuk mencerminkan kualitas proses pembelajaran, khususnya pada topik biologi yang membutuhkan keterampilan laboratorium terkait literasi sains. Penelitian ini menggunakan pendekatan analisis deskriptif kuantitatif untuk menganalisis dan membandingkan tingkat literasi sains siswa SMP dalam topik biologi. Alat penilaian dalam penelitian ini dikembangkan berdasarkan indikator PISA untuk mengukur literasi sains siswa. Pengumpulan data dilakukan dengan teknik purposive sampling untuk memperoleh sampel dari dua SMP yang berbeda. Berdasarkan hasil penelitian terhadap 134 siswa dari dua kelas di setiap sekolah, ditemukan bahwa 113 siswa masih memiliki keterampilan literasi sains di bawah rata-rata, sementara hanya 21 siswa yang berada di atas rata-rata. Siswa dengan nilai di atas rata-rata berada pada level 5 dan 6, sedangkan siswa dengan nilai di bawah rata-rata berada pada level 2, 3, dan 4. Penelitian ini menunjukkan bahwa perlu adanya perhatian khusus dari guru untuk lebih fokus pada pengembangan literasi sains siswa. Implikasi ilmiah di masa mendatang adalah peningkatan kualitas proses pembelajaran guna mengembangkan literasi sains siswa, khususnya pada topik biologi.
Kajian Kinerja Lalu Lintas Bundaran Besar Kota Palangka Raya
Authors: Ompusunggu Bern Davis , Riani Desi , Robby Robby
Published: December 2024

Berdasarkan hasil Penelitian volume lalu lintas pada Bundaran Kapasitas Dasar jalinan Bundaran terbesar Jalinan Imam Bonjol (Co)=4848,72 smp/jam, terkecil Jalinan Kinibalu (Co) =3612,98 smp/jam, Kapasitas Sebenarnya (C) terbesar jalinan Imam Bonjol (C)=3419,31 smp/jam, terkecil Jalinan Kinibalu (C)=2547,86 smp/jam, Derajat Kejenuhan (DS) terkecil Jalinan D.I.Pandjaitan (DS)=0,18,terbesar Jalinan Yos Sudarso (DS)=0,35, Tundaan Jalinan Bundaran (DT) terkecil Jalinan D.I.Pandjaitan (DT)=0,84 det/smp,terbesar Jalinan Yos Sudarso (DT)=1,64det/smp,Tundaan lalu lintas total (Dtotal)=4535,82 det/jam,Tundaan rata-rata jalinan (DTR)=2,13, Tundaan rata-rata bundaran (DTR+4) 6,13 ,Peluang Antrian QP% batas bawah- QP% batas atas (DS) 0,35 adalah 3,6%-7,35%, Maka disimpulkan dari hasil yang didapat bahwah (DS 0,75) kinerja jalinan bundaran arus lalu lintas stabil, akan tetapi terjadi penyempitan lajur dan meningkatnya kapasitas oleh pembatas proyek.
PENGUKURAN TINGKAT KEBISINGAN DI LOKASI RENCANA PEMBANGUNAN FLY OVER KOTA BANDUNG
Authors: Wardani Eka , Salsabella Abelda
Published: December 2024

ABSTRAKTujuan penelitian ini untuk mengukur tingkat kebisingan pada rencana pembangunan fly over Kota Bandung. Pengukuran kebisingan dilakukan di sembilan titik yang berada pada area Kecamatan Cicendo dan Andir dengan rencana panjang fly over 550 meter dan lebar 11,5 meter. Metode pengumpulan data meliputi data primer yaitu observasi lapangan, dokumentasi kondisi eksisting dengan mengukur tingkat kebisingan. Data sekunder yaitu deskripsi kegiatan dan peta lokasi. Pengolahan dan Analisis data mengacu pada Keputusan Menteri Lingkungan Hidup Nomor 48 Tahun 1996 tentang Baku Tingkat Kebisingan. Hasil penelitian pengukuran tingkat kebisingan di titik 1 sebesar 80,60 dBA, titik 2 sebesar 80,98 dBA, titik 3 sebesar 80,27 dBA untuk peruntukan perdagangan dan jasa sebesar 70 dB(A) dan titik 4 sebesar 77,45 dBA, titik 5 sebesar 77,96 dBA, titik 6 sebesar 77,93 dBA, titik 7 sebesar 78,77 dBA, titik 8 sebesar 75,75 dBA dan titik 9 sebesar 79,08 dBA untuk peruntukan perumahan dan pemukiman sebesar 55 dB(A). Kesimpulan penelitian ini bahwa tingkat kebisingan di rencana pembangunan Fly Over Kota Bandung melebihi baku mutu.
UJI EFISIENSI FILTER PARTIKULAT MATTER BERBAHAN SERBUK KAYU UNTUK MENGURANGI EMISI FINE PARTICLE ASAP ROKOK
Authors: Destrianingtyas Aulia Safitri , Hurnah Hurnah , Fajriah Baiq Nurul , Wahana Lidia , Budianto Arif , Rahayu Susi , Anggriani Ni Ketut
Published: December 2024

Partikulat yang dikeluarkan oleh asap rokok diketahui berkontribusi terhadap polusi udara dan berdampak negatif terhadap kesehatan manusia. Oleh karena itu, diperlukan upaya untuk mengurangi konsentrasi asap rokok di udara. Dalam penelitian ini, kami mengembangkan filter partikulat yang terbuat dari serbuk kayu dengan tepung terigu sebagai perekat filternya. Variasi filter yang digunakan pada penelitian ini adalah filter yang dijemur langsung di bawah sinar matahari dan menggunakan pengering rambut. Filter ini ditandai dengan nilai efisiensinya dalam mengurangi emisi asap rokok. Efisiensi filter dalam mereduksi partikel ditentukan dengan membandingkan asap rokok sebelum dan sesudah penambahan filter. Hasil penelitian menunjukkan nilai efisiensi filter dalam mereduksi partikel asap rokok adalah sekitar 95,24%. Nilai efisiensi yang dihasilkan dari variasi perlakuan filter yang berbeda tidak menunjukkan perbedaan nilai yang signifikan.
ANALISIS INTENSITAS BISING SERTA POLA SEBARAN TINGKAT KEBISINGAN DI SEKITAR BUNDARAN WARU MENGGUNAKAN SURFER
Authors: Abdilllah Hanif Yusuf Rahman , Yusrianti Yusrianti , Nilandita Widya
Published: December 2024

Bundaran Waru, merupakan jalan kolektor sekunder di Kota Surabaya yang sering mengalami kemacetan, terutama di persimpangan yang padat dari berbagai arah jalan, dikenal sebagai salah satu zona lalu lintas yang padat. Keputusan Menteri Lingkungan Hidup No. 48 tahun 1996 menyatakan bahwa tingkat ketidaknyamanan yang ditimbulkan oleh kebisingan lalu lintas termasuk dalam klasifikasi polusi suara. Dengan menggunakan perangkat lunak Surfer, penelitian ini mencoba untuk mengetahui pola dan intensitas sebaran kebisingan di sekitar Bundaran Waru dari 20 titik dalam radius 500 meter. Metodologi yang digunakan untuk pengukuran kebisingan sesuai dengan Keputusan Menteri Negara Lingkungan Hidup No. 48 Tahun 1996 tentang Baku Tingkat Kebisingan, dan pengukuran dilakukan pada hari Senin dan Jumat untuk merefleksikan hari kerja dan hari Minggu untuk merefleksikan hari libur. Hasil pengukuran menunjukkan bahwa tingkat kebisingan di sekitar Bundaran Waru melampaui Baku Mutu (55 dB) dan (70 dB) yang telah ditetapkan, yaitu berkisar antara 66,15 hingga 87,89 dBA. Pola distribusi kebisingan menunjukkan tingkat tertinggi di titik 18 untuk hari Senin dan Jumat dan titik 6 untuk hari Minggu, sementara tingkat terendah secara konsisten tercatat di titik 17 di ketiga hari tersebut.
UJI EFEKTIVITAS PEMANFAATAN SERBUK BIJI KELOR SEBAGAI ALTERNATIF KOAGULAN DALAM MENURUNKAN COD, BOD, DAN TSS PADA AIR LIMBAH LAUNDRY
Authors: Thabrani Muhammad Rozan , Permadi Didin Agustian
Published: December 2024

Penggunaan koagulan anorganik banyak digunakan dalam pengolahan air limbah. Namun, adanya dampak negatif dalam jangka panjang, membuat penggunannya mulai banyak digantikan oleh koagulan organik yang terbuat dari alam atau biokoagulan yang ramah lingkungan. Di Indonesia banyak sekali tanaman yang dapat dimanfaatkan sebagai biokoagulan, salah satunya Biji Kelor (Moringa oleifera). Penelitian ini dilakukan untuk menganalisis pengaruh serbuk biji kelor terhadap parameter COD, BOD, dan TSS pada air limbah laundry, dengan menggunakan metode jar test. Variabel penelitian yang digunakan adalah variasi dosis serbuk biji kelor (0,8 gr; 1,0 gr; 1,5 gr; 2 gr; dan 3 gr). Penelitian ini dianalisis dengan melakukan perbandingan dengan baku mutu dan perhitungan presentase penyisihan setiap parameter ujinya. Hasil penelitian menunjukan bahwa perbedaan dosis serbuk biji kelor dapat mempengaruhi kadar COD, BOD, dan TSS yang terkandung pada air limbah. Dosis optimum dalam penurunan COD dan TSS adalah dosis 1,5 gram dengan penurunan COD sebesar  84% dan TSS sebesar 94%. Sementara itu, pada parameter BOD dosis optimumnya adalah dosis 1 gram dengan persen penurunan sebesar 85%.
PEMODELAN SEBARAN BOD DAN TSS DI PARIT GUDANG KECAP KOTA PONTIANAK MENGGUNAKAN WASP 7.5
Authors: Ananta Bagus Verel , Purnaini Rizki , Desmaiani Herda
Published: December 2024

Parit Gudang Kecap berlokasi di Kecamatan Pontianak Timur, Kota Pontianak. Daerah tangkapan parit dimanfaatkan sebagai permukiman penduduk dan pada muara parit terdapat sebuah industri kecap. Kegiatan industri dan domestik yang berlangsung di sekitar parit menyebabkan menurunnya kualitas dari air parit. Penelitian ini bertujuan untuk mengidentifikasi dan menginventarisasikan sumber pencemar parit, memodelkan parameter BOD dan TSS menggunakan model WASP, dan mengetahui DTBP parit. Pengambilan sampel air dilakukan dengan metode grab sampling saat kondisi air parit surut. Hasil Inventarisasi sumber pencemar parit meliputi limbah domestik (non-point source) yang merupakan sumber pencemar dominan yang berasal dari pemukiman dan limbah industri dari pabrik kecap (point source). Pemodelan kualitas air parit untuk parameter BOD dilakukan 5 skenario yaitu pengurangan beban pencemar sebesar 15%, 50%, 75%, 100% dan kombinasi skenario pengurangan beban pencemar. Pemodelan kualitas air parit untuk parameter TSS dilakukan 4 skenario yaitu pengurangan beban pencemar sebesar 75%, penambahan beban pencemar sebesar 10% dan 90%, dan kombinasi skenario pengurangan dan penambahan beban pencemar. DTBP untuk parameter BOD untuk segmen 1-5 secara berurutan sebesar 3,4; 0,96; 4,73; 3,36; 1,12; dan 7,53 kg/hari dan untuk parameter TSS untuk segmen 1-5 secara berurutan sebesar 3,8; 3,47; 11,59; 4,68; 2,24 kg/hari.
PENURUNAN KADAR SALINITAS, COD, MINYAK DAN LEMAK PADA AIR LIMBAH DENGAN KOMBINASI FILTRASI-ADSORPSI (STUDI KASUS: AIR LIMBAH RETENTION POND PEMBANGKIT LISTRIK)
Authors: Fauzia Naufalin Akbar , Anasstasia Titi Tiara , Hidayati Uslah
Published: December 2024

Retention pond pada industri pembangkit listrik tempat menampung air hujan, air saluran drainase dari seluruh area pada lingkup perusahaan, serta hasil penyaringan pada unit Circulating Water Pump (CWP). Upaya pengolahan air retention pond mempertimbangkan parameter kualitas air yaitu salinitas, Chemical Oxygen Demand (COD), minyak dan lemak berdasarkan sumber air yang memasuki retention pond. Upaya pengolahan air retention pond dalam pemanfaatan air sebagai air baku. Metode yang dipilih yaitu menggunakan filtrasi dengan adsorben karbon aktif dan zeolit aktif. Variasi waktu dalam mengetahui waktu tinggal paling optimal media filter dalam mengadsorp, yaitu 0 jam; 1 jam; 2 jam; 3 jam; 4 jam; 5 jam; dan 6 jam. Efektivitas penurunan salinitas sebesar 53,846% dengan kadar akhir 6‰ di variasi 6 jam; COD sebesar 91,008% dengan kadar akhir 70,5 mg/L di variasi 5 jam; dan minyak lemak sebesar 52,275% dengan kadar akhir 0,9545 mg/L di variasi 4 jam. Model kapasitas adsorpsi Isoterm Langmuir dan Isoterm Freundlich menunjukkan besar ion dan senyawa yang teradsorp terbesar dengan rentang nilai 0,0010-0,714 mg/g pada waktu tinggal 5 jam. Oleh karena itu, waktu optimal pengolahannya pada waktu tinggal 5 jam.
Characterization of essential oil from red citronella leaves (Cymbopogon nardus L.)
Authors: Wicaksono Akhmad Permadi , Afandi Fadila Ardiansyah , Wira Guardiola Rosa , Adzani Mayla Fayzza , Erliyanti Nove Kartika
Published: December 2024

Citronella leaves are generally processed using conventional methods to obtain its essential oil. UMAE (Ultrasound-Microwave Assisted Extraction) method can be a replacement of conventional methods. UMAE is an extraction process assisted by ultrasonic waves and microwaves. NaCl solution can be used as a solvent in the UMAE method due to its large dielectric constant value. This research aimed to examinethe effect of microwave power and salt concentration on the characteristics of citronella leaf essential oil (density, refractive index, color, and solubility in alcohol). The extraction method used in this research was Ultrasound Microwave-Assisted Extraction (UMAE). The solvent and material used in this research were NaCl salt solution and Red Citronella Leaves (Cymbopogon nardus L.). The first stage carried out in this research was pre-treatment assisted by ultrasonic waves for five minutes at a temperature of 35 ᵒC, solvent concentrations of 0, 2, 4, 6, and 8% (w/v). The second stage was microwave-assisted extraction with a microwave power of 150, 300, 450, 600, and 750 Watts. The best results were produced at a concentration of 4% NaCl salt solution and 450Watt microwave power with yellow color, density value 0.8898 g/mL, refractive index 1.456, and solubility in alcohol 1:2. Overall, the quality of citronella leaves essential oil was in range of SNI 06-3953 1995. Therefore, the Red Citronella Leaves (Cymbopogon nardus L.) in the future can be considered as the alternative resource of citronella essential oil due to its good characteristics, among many varieties of citronella plants.
The ability of the Ni/Al2O3 catalyst in the CO2 methanation process in﻿ terms of variations in CO2 flow rate and catalyst
Authors: Parega Sultan , Junaidi Robert , Nugroho Didiek Hari , Niawanti Helda
Published: December 2024

Carbon dioxide (CO2) is one of the biggest contributors to the greenhouse effect. Based on International Energy Agency (IEA) data, global emissions of carbon dioxide (CO2) from burning energy and industrial activities will reach 36.8 billion tons in 2022. The increase in emissions in 2022 will mainly come from burning coal and fuel oil (Fuel Oil). Carbon dioxide emissions from coal rose 1.6% while fuel oil emissions increased 2.5%. One effort to reduce carbon dioxide emissions is to convert carbon dioxide into methane gas (CH4) which can be used as fuel. This research aims to produce methane gas from carbon dioxide using Ni/Al2O3 catalyst treatment and varying CO2 flow rates. In this research, CO2 was used as a raw material with a Ni/Al2O3 catalyst and Zn metal. Based on the research results, the highest conversion yield of methane gas was 49.23% with a variation of 0.05 L/minute with Ni_R4 catalyst treatment
Synthesis of biochar from fronds palm waste as a support for CaO catalyst
Authors: Oktariandi Vito , Akbar Irfan Sarhadi , Rizky Muhammad Dian , Anjani Putri , Perdana Rendy Putra
Published: December 2024

Production palm oil-based biodiesel production itself has been widely developed in Indonesia to replace fuel because the palm oil commodity has the greatest potential for biodiesel for biodiesel production. The use of catalysts affects the production of biodiesel because it can accelerate the production of biodiesel which is needed. Materials that has the potential to be part of the catalyst is activated carbon from palm frond waste palm. Palm frond waste has great potential and is supported by its lignocellulosic component. lignocellulose component, so it can be utilized as activated carbon. Research This research has variations in the procedure, namely pyrolysis temperature variations of 450°C and 500°C, pyrolysis time of 15 minutes and 20 minutes as well as the base used in impregnation, namely NaOH and KOH. The catalyst that has been The synthesized catalyst was characterized using XRD and BET analysis. XRD testing XRD testing obtained the smallest particle size on the 500°C CaO/NaOH/Biochar catalyst with a pyrolysis time of 15 minutes amounting to 26.925732 nm and in the BET test, the smallest particle size was obtained. BET testing obtained the largest catalyst surface area on CaO/NaOH/Biochar catalyst 500°C with pyrolysis time of 15 minutes amounted to 8.1626 m2/g.
Effect of flow rate and condenser cooling water temperature on product yield of coconut trunk sawdust pyrolysis liquid smoke
Authors: B Srisitisugiastuti , Aladin Andi , Syarif Takdir , Wiyani Lastri
Published: December 2024

Liquid smoke is a product resulting from the pyrolysis of biomass waste that contains chemical compounds with various applications, such as food preservatives, natural pesticides, and raw materials for the chemical industry. Liquid smoke is a by-product of simultaneous pyrolysis. To maximize the yield of liquid smoke while minimizing mass loss that could potentially pollute the environment, the simultaneous pyrolysisreactor needs to operate under optimal condensation conditions. This study observed two condensation parameters: the flow rate and the cooling water temperature of the condenser, using the case study of pyrolysis of biomass waste from coconut trunk sawdust. Pyrolysis was conducted at a temperature of 400°C for 2.5 hours, varying the flow rate of the cooling water in the condenser (1, 2, 2.5, 3, and 3.5 liters/minute)and the temperature of the cooling water (10°C, 20°C, 25°C, and 30°C). A multivariable nonlinear mathematical model was obtained, relating the yield of liquid smoke (y; %) to the water temperature parameter (x1) and the flow rate of the cooling water in the condenser (x2), which is expressed as y = 6.68 + 1.89x1 – 0.04x1² – 0.41x1x2 + 13.06x2 – 0.89x2². It was concluded that the optimal condensation conditions consist of a flow rate and cooling water temperature of 2 liters/minute and 20°C, respectively, yielding a maximum of 36% liquid smoke, 33% charcoal, and a minimum mass loss of 31%. Based on the coefficient values in the obtained mathematical model, it can also be concluded that the more dominant parameter affecting the yield of liquid smoke is the flow rate of the cooling water in the condenser, with a coefficient value of 13.06. An effective condensation system can enhance the conversion efficiency of pyrolysis vapour into liquid smoke and minimize potential pollution, demonstrating significant potential in processing biomass waste into valuable products, such as liquid smoke and charcoal, while being more environmentally friendly and energy-efficient.
O olhar de José Luis Garci sobre a escola rural do pós-guerra espanhola: abordagem à You’re The One (2000)
Authors: Durán Manso Valeriano
Published: December 2024

José Luis Garci (Madrid, 1944) é um dos cineastas espanhóis que mais recorreu ao passado para desenvolver os seus filmes. No início da sua carreira concentrou-se em histórias passadas no presente, a Transição (1975-1982), mas posteriormente manifestou interesse por períodos anteriores. O pós-guerra é um dos mais presentes na sua filmografia desde finais dos anos 90 e permitiu-lhe concentrar-se tanto em espaços urbanos como Madrid, como em espaços rurais, especialmente nas Astúrias. Nestes filmes recria como era a vida naquela época, bem como o universo educativo, os perfis dos professores e os espaços escolares. Com o objetivo de conhecer a representação do passado histórico-educativo que faz nos seus filmes, You’re the One (2000) é abordado como um estudo de caso.
The use of algae to create phytosanitary products
Authors: Derkanosova A. A. , Drannikov A. V. , Nshimirimana S. , Hryachkov N. A. , Hryachkova L. A. , Egorova G. N.
Published: December 2024

Microalgae and macroalgae have beneficial properties for nutrition, biocontrol, immunity and health, etc., especially in the context of integrated multitrophic aquaculture. Projects to improve the bioavailability, digestibility and pretreatment of algae, as well as those aimed at controlling crops with a high protein content (macro/micro), are growing in popularity. Bioremediation will be available for fertilization as part of a mineral and nitrogen recycling approach improved by the effects of these matrices on soil structuring and nutrient absorption. The advantage of microalgae is that they have a fairly short reproduction cycle (about half a day), which allows efficient production of biomass in large quantities. Microalgae have a wide variety of original molecules in their cells. This biomass is rich in lipids, proteins, vitamins and antioxidants. Microalgae form the basis of the concept, they have caused one of the greatest climatic changes in the history of the Earth. Their metabolism, based on photosynthesis, added huge amounts of oxygen to the "toxic primitive atmosphere of the Earth." The main characteristics of microalgae. Most microalgae are called photoautotrophic or autotrophic. Microalgae are very diverse and about 30,000 species have already been analyzed. This number is less than 10% of the estimated existing total. The most common classes in terms of relative abundance are diatoms (bacillariophyceae), green algae (chlorophyceae), cyanobacteria or blue-green algae (cyanophyceae) and golden algae (chrysophyceae). Most of the research is devoted to finding the best strains. The choice of microalgae species ultimately depends on the available organisms capable of synthesizing target products and achieving yields necessary to meet economic and technical constraints. Therefore, when choosing, it is necessary to take into account the prevailing climatic conditions, especially average and minimum temperatures and the availability of necessary nutrients. The use of algae to create phytosanitary products is a promising and in-demand area of research.
Development of functional algorithms and a conceptual model of an information and analytical system to support the management of the regional agro-industrial complex
Authors: Linkina A. V. , Roshin V. S.
Published: December 2024

The article discusses the possibilities of using digitalization tools in the organization and optimization of management systems for the regional agro-industrial complex. The main tasks and functions of the designed system are described in terms of constructing optimization models to support decision-making at agricultural enterprises. The structure of the top-level conceptual model of the developed system is presented, which contributes to solving the problems of automating the collection and processing of heterogeneous data and generating reports based on the results of analyzing the obtained values. Based on the use of an object-oriented approach in UML 2.0 notation, a use case diagram was developed to formalize options for user interaction with system modules. The main user categories of the system are identified. The integration of the reporting module, including standard templates approved at the legislative level of the Russian Federation (17 forms for the main indicators of agricultural production), is demonstrated. Step-by-step development of functional algorithms and conceptual model and construction of structural and behavioral models for detailed display of information and logical models of the designed management support decision-making system in the regional agro-industrial complex is carried out. The efficiency of introducing automated integrated tools at enterprises of various scales and levels of production organization is estimated at 53%. The implementation of the system we propose can significantly help in solving the problems of automation and optimization of the existing management structure, and also allows reducing production costs, minimizing the use of labor resources and ultimately helps ensure the implementation of the activities stated in the National Program “Digital Economy of the Russian Federation” in terms of implementation departmental project “Digital Agriculture”..