bluuebunny/crossref_metadata_2025 huggingface dataset:
KEANEKARAGAMAN JENIS MAKROFAUNA TANAH DI TAMAN HUTAN HUJAN TROPIS INDONESIA (TH2TI) BANJARBARU KALIMANTAN SELATAN
Authors: Ashari Fahrizal , Yamani Ahmad , Peran Setia Budi
Published: January 2025

Banyak manfaat dari pembangunan Taman Hutan Hujan Tropis (TH2TI) seperti nilai estetika meningkat, populasi udara menurun, daerah resapan air meningkat, dan udara yang lebih segar. Informasi tentang keanekragaman makrofauna tanah berdasarkan penjelasan diatas, maka khususnya di Taman Hutan Hujan Tropis Indonesia (TH2TI) Kota Banjarbaru sangat penting, oleh sebab itu perlu dilakukan penelitian. Tujuan dari penelitian ini adalah Mengidentifikasi jenis makrofauna tanah dan Menganalisis keanekaragaman jenis makrofauna tanah dengan menggunakan indeks keanekaragaman Shannon-Wiener. Metode yang digunakan pada penelitian ini mengacu pada hasil nilai indeks keanekaragaman Shannon-Wiener dengan metode purposive sampling dan pengamatan makrofauna tanah menggunakan metode pitfall trap dan hand sorting yang dilakukan pada saat pagi dan sore hari.mana pencatatan dan pengolahan data dari hasil penelitian dicatat pada tabel identifikasi dan tabel jenis populasi dengan 2 waktu pengamatan yang berbeda, yaitu pagi hari dan sore hari. Hasil yang diperoleh dari data identifikasi pada makrofauna yang ada di Taman Hutan Hujan Tropis Indonesia (TH2TI) dengan waktu pengamatan yang berbeda ada 16 jenis makrofauna tanah dengan 12 famili. Hasil menunjukkan bahwa jumlah dan populasi pada fauna tanah yang paling banyak dari jumlah total pengamatan ialah semut api dengan jumlah 42 jenis dengan rata-rata total pengamatan sebesar 21 jenis serta hasil indeks keanekaragaman menunjukkan bahwa perhitungan indeks keanekaragaman jenis makrofauna tanah di Taman Hutan Hujan Tropis Indonesia (TH2TI) diperoleh nilai indeks keanekaragaman jenis makrofauna tanah sebesar 2,216 yang artinya indeks keanekaragaman makrofauna tanah termasuk dalam kategori sedang (1< H’<3).
NILAI EKONOMI TANAMAN KEMIRI (Aleurites moluccanus) DI KAWASAN HUTAN LINDUNG KTH BATU KURA KABUPATEN TANAH LAUT
Authors: Najla Siti , Rezekiah Arfa Agustina , Pitri Rina Muhayah Noor
Published: January 2025

Calculating the value or benefits present in a particular area is a crucial strategy in providing valuable information for decision-makers and is also an effort that can be undertaken to enhance the management of natural resources and environmental protection. The objective of this study is to analyze the economic value of utilizing candlenut trees in the KTH Batu Kura area using a use value approach, which encompasses both direct use value and indirect use value. Data collection was carried out through an inventory of candlenut trees in the KTH Batu Kura land, interviews with KTH Batu Kura managers, and the Tanah Laut Forest Management Unit (KPH). The research findings reveal the total economic value of candlenut trees in the KTH Batu Kura Protected Forest Area amounting to Rp.1,006,619,433.82 per year, consisting of the direct use value (candlenut production and candlenut wood) of Rp.817,405,363.82 per year and the indirect use value from carbon sequestration by candlenut trees amounting to Rp.189,214,070.00 per year.Menghitung nilai atau manfaat yang ada dari suatu wilayah adalah strategi penting dalam menyediakan informasi berharga bagi para pengambil keputusan, dan juga merupakan Upaya yang dapat dilakukan untuk meningkatkan pengelolaan sumber daya alam dan perlindungan lingkungan.. Tujuan dari penelitian ini adalah untuk menganalisis nilai ekonomi pemanfaatan tanaman kemiri di KTH Batu Kura dengan pendekatan nilai guna yang terdiri dari nilai guna langsung dan nilai guna tidak langsung. Pengambilan data dilakukan dengan inventarisasi pada tanaman kemiri di lahan KTH Batu Kura, wawancara dengan pengelola KTH Batu Kura dan KPH Tanah Laut. Hasil penelitian menunjukkan nilai ekonomi total dari tanaman kemiri yang terdapat di Kawaasan Hutan Lindung KTH Batu Kura yaitu sebesar Rp.1.006.619.433,82/tahun, yang terdiri dari nilai guna langsung (produksi kemiri dan kayu kemiri) sebesar Rp.817.405.363,82/tahun dan nilai guna tidak langsung dari karbon pohon kemiri sebesar Rp.189.214.070,00/tahun.
POLA ALIRAN UDARA PADA TURBIN ANGIN SAVONIUS HELIKS DENGAN VARIASI JUMLAH SUDU MENGGUNAKAN METODE CFD
Authors: Harist Mishbahuddin Muhammad , Saputra Taufik Wisnu , Wijayanto Danar S.
Published: January 2025

Ketersediaan sumber daya fosil semakin menurun, mendorong pemerintah dan swasta berlomba mengembangkan energi terbarukan. Salah satu solusinya adalah menciptakan Pembangkit Listrik Tenaga Bayu (PLTB) untuk memenuhi permintaan energi. Turbin Savonius, juga dikenal sebagai VAWT yang berpotensi besar memenuhi kebutuhan energi skala kecil. Turbin angin Savonius memiliki performa lebih rendah dibandingkan jenis lainnya. Performa ini perlu ditingkatkan melalui modifikasi desain, seperti variasi jumlah sudu pada turbin. Tujuan penelitian ini untuk menganalisis pengaruh jumlah sudu pada kinerja turbin angin Savonius tipe heliks. Fokus penelitian ini pada pola aliran udara dengan variasi jumlah sudu pada turbin angin Savonius heliks. Turbin ini dikaji secara numerik dengan pendekatan dinamika fluida komputasional (CFD) menggunakan aplikasi ANSYS Fluent. Masing-masing variasi jumlah sudu akan disimulasikan pada kecepatan angin 1 s.d 5 m/s. Hasil pengujian secara numerik akan menunjukkan visualisasi dalam bentuk kontur dan vektor dalam fokus tekanan atau kecepatan pada masing-masing variasi. Berdasarkan visualisasi hasil pengujian numerik didapatkan jumlah sudu mempengaruhi pola aliran yang terjadi. Bertambahnya jumlah sudu meningkatkan aliran turbulensi yang terjadi. Tekanan pada permukaan cembung juga semakin meningkat dengan tertambahnya sudu. Dua fenomena aliran udara tersebut yang menurunkan kinerja turbin, sehingga dua buah sudu menghasilkan performa paling optimal karena minimnya hambatan yang dialaminya.
The Potential of House Geckos in the Spread of Salmonellosis in Makassar City
Authors: Yusuf Baso , Kholilullah Zainal Abidin , Suharto Rian Hari , Rell Fedri , Jamaluddin Abdul Wahid , Mapparenta Bulan Allu , Syahbar Lutfiah Kurnia , Aprilia Eka , Alamsyah Muhammad
Published: January 2025

Salmonellosis is a significant global public health concern caused by the bacterium Salmonella spp. As a zoonotic disease, it can be transmitted between animals and humans, leading to various clinical symptoms in humans, including gastroenteritis, diarrhea, vomiting, enteric fever, and septicemia. This study examines the presence of Salmonella spp. in house geckos (Hemidactylus frenatus and Cosymbotus platyurus), which may act as zoonotic reservoirs. A total of 50 house geckos were collected from residential areas across five districts in Makassar City—Biringkanaya, Tamalanrea, Tallo, Manggala, and Rappocini—from March to September 2024. Skin, oral, and fecal samples from the geckos were cultured on nutrient agar, brain heart infusion broth, and selective Salmonella-Shigella agar, with bacterial identification confirmed using MALDI-TOF mass spectrometry. Findings revealed the presence of Salmonella enterica ssp. enterica in geckos from the Manggala district, highlighting a potential pathway for environmental contamination and zoonotic disease transmission. This study underscores the need for public awareness regarding the health risks associated with household reptiles and emphasizes preventive sanitation measures to reduce potential pathogen exposure. These findings serve as a foundation for future research on zoonotic reservoirs in urban environments.
Multivessel coronary artery stenting complicated by stent thrombosis in the setting of hereditary thrombophilia: a clinical case
Authors: Safiullina Z. M. , Mezhonov E. M. , Viatchinina S. V. , Vyalkina Yu. A. , Sereshcheva A. Kh.
Published: January 2025

An urgent issue remains to determine the role and significance of gene polymorphism encoding components of the blood coagulation and anticoagulation system in increasing the risk of myocardial infarction and its thrombotic complications, including those associated with coronary artery stenting. This article presents a clinical case of a patient with multivessel coronary artery disease and hereditary thrombophilia — polymorphism of thrombophilia genes (heterozygote F13, ITGA2). This condition was accompanied by dramatic progression of recurrent stent thrombosis and recurrent myocardial infarction, despite ongoing triple and subsequently dual antithrombotic therapy. Repeated thrombosis necessitated surgical revascularization via coronary artery bypass surgery. Hereditary thrombophilic conditions may contribute to the multifactorial nature of stent thrombosis development, complicating both the diagnosis of its causes and the choice of antiplatelet and anticoagulant therapy options, especially given the limited time frame in cases of acute stent thrombosis. Risk factors for stent thrombosis in this clinical case include hereditary thrombophilia, multivessel coronary artery disease involving the left main coronary artery, multiple stent implantation, myocardial infarction, and repeated revascularization. A number of gene mutations associated with an increased risk of thrombosis were identified, which may have varying clinical significance. However, from the perspective of genetic polymorphism, it is not possible to completely rule out their influence. Regarding the choice of antithrombotic therapy in patients with congenital thrombophilia, recurrent or treatment-resistant thromboses of unknown etiology, rare blood clots localization, randomized clinical trials on the efficacy of direct oral anticoagulants remain insufficient. Therefore, warfarin remains the treatment of choice for this specific group group of patients. Diagnosis of hereditary thrombophilic conditions influences the choice of rational therapy and secondary prevention of thrombotic complications.
Blood pressure variability — 15 years later
Authors: Gorbunov V. M. , Platonova E. V.
Published: January 2025

Blood pressure variability (BPV) has been studied for a long time, and recently important new information has been obtained about the prognostic value of BPV and the influence of antihypertensive therapy on it. There are three groups of VBP characteristics that are most important from a practical point of view: 24-hour BPV, BPV of average duration and visit-to-visit variability (VVV). VVV has attracted the attention of scientists in recent years. In a recent study in patients who participated in the ASCOT-BPLA cohort (mean follow-up 17.4 years) it was shown that 1) SBP VVV proved to be a strong predictor of cardiovascular complications (CVC), independent of mean BP (and possibly stronger than the latter) including in patients with well-controlled AH; 2) the CVC risk (including stroke and coronary events) remained significantly lower in the amlodipine treatment group. This finding seems particularly interesting in view of the fact that during such a long follow-up period many patients changed their treatment regimen; baseline values of office BP in both groups did not differ significantly. Thus, the independent prognostic value of VVV has received new convincing confirmation. Amlodipine may be the optimal drug for the treatment of patients with elevated BPV, but further studies are required to prove this point.
Сardiac interoception and its link with psychological characteristics in patients with symptomatic and asymptomatic premature ventricular contractions
Authors: Limonova A. S. , Minenko I. A. , Sukmanova A. A. , Davtyan K. V. , Ershova A. I. , Drapkina O. M.
Published: January 2025

Aim. To explore cardiac interoception (probed by interoceptive accuracy in the mental tracking task) and its association with psychological characteristics in groups of patients with symptomatic and asymptomatic premature ventricular contractions (PVC) and controls.

Material and methods. The study included 34 patients with PVC [17 individuals formed the group with symptomatic PVC (median age: 43 years) and 17 — formed the group with asymptomatic PVCs (median age: 42 years)] and 17 healthy subjects without cardiovascular diseases (median age: 40 years) in the control group. All study participants underwent 24-hour blood pressure and Holter monitoring. Interoception was assessed by interoceptive accuracy probed by behavioral test — mental tracking task. Participants completed questionnaires to assess levels of depression, anxiety, alexithymia and body perception.

Results. Patients with symptomatic PVC had significantly higher levels of personal (p<0.001) and situational (p=0.011) anxiety compared to controls (p<0.001). The total alexithymia index was elevated in both symptomatic (p=0.004) and asymptomatic patients (p=0.028) compared to controls. Body perception (supradiaphragmatic scale of the Body Perception Questionnaire) was significantly higher in the group with symptomatic PVC compared to both the asymptomatic group (p=0.003) and the control group (p<0.001). A trend towards higher interoceptive accuracy was found in the group with symptomatic PVC (p=0.021; after correction p=0.064). No correlation was found between the level of interoception and psychological characteristics.

Conclusion. Our findings suggest a possible role of cardiac interoception in the development of PVC symptoms, which may serve as a basis for the development of non-invasive and non-pharmacological treatment methods aimed at reducing the intensity of PVC symptoms, taking into account patients’ levels of anxiety, alexithymia and body perception.
Medical treatment of cardiovascular diseases in patients after hospitalization for COVID-19 (three-year follow-up data in the TARGET-VIP registry)
Authors: Kutishenko N. P. , Martsevich S. Yu. , Loukianov M. M. , Andreenko E. Yu. , Voronina V. P. , Dindikova V. A. , Dmitrieva N. A. , Kudryavtseva M. M. , Lerman O. V. , Okshina E. Yu. , Smirnov A. A. , Soplenkova A. G. , Pulin A. A. , Kuzina N. N. , Nefedova D. A. , Klyashtorniy V. G. , Karpov O. E. , Drapkina O. M.
Published: January 2025

Aim. To evaluate the quality of drug treatment of patients with cardiovascular diseases (CVD) at the remote stage of follow-up after hospitalization for new coronavirus infection (COronaVIrus Disease 2019, COVID-19) within the framework of the prospective TARGET-VIP registry.

Material and methods. 1,130 people were included in the registry. The 473 (54.8%) patients with CVD were selected of the 863 patients discharged from the hospital with a diagnosis of COVID-19.

Results. The frequency of proper prescriptions of medicines upon discharge from the hospital was 60%, after 3 years this indicator decreased to 41.4% (p<0.001). During the 3-year follow-up, a clear trend was recorded in a decrease in the frequency of intake of all drugs, while for some groups of drugs this decrease reached statistically significant differences. The frequency of taking angiotensin converting enzyme inhibitors in patients with cerebral stroke, statins in coronary heart disease and statins in patients with cerebral stroke MI did not change significantly, although the frequency of taking these drugs at all stages of follow-up was very low and did not exceed a third of the required prescriptions. New CVD were detected in 51 patients, and the average frequency of taking proper medications for CVD was higher than in patients with already known stable CVD, 74.2% and 66.2%, respectively, p=0.047. The presence of CVD did not affect the quality of therapy in the new cases of CVD, the average frequency of taking the necessary drugs in these groups was 77.8 and 63.2%, respectively, p=0.074.

Conclusion. The quality of CVD therapy was insufficient at all stages of long-term follow-up: the frequency of proper prescriptions upon discharge from the hospital was 60%, after 3 years this indicator decreased to 41.4%. A clear trend was revealed in a decrease in the frequency of taking all drugs, while for some groups of drugs this decrease reached statistically significant differences. The quality of cardiovascular pharmacotherapy was higher with the appearance / development of new CVD in comparison with the group of stable patients with CVD, there was no significant improvement in the quality of therapy for previously observed CVD.
Pengaruh Blended Learning Berbantuan Google Classroom Terhadap Hasil Belajar Peserta Didik Kelas X Materi Larutan Elektrolit dan Non Elektrolit di SMA Muhammadiyah 1 Palembang
Authors: Rima Rima Putri Wulan Suci
Published: January 2025

This study aims to determine the effect of the Google Classroom-assisted blended learning model on student learning outcomes on electrolyte and non-electrolyte solutions. The research was conducted at SMA Muhammadiyah 1 Palembang in class X MIPA. The research method uses a quasi-experimental design with a nonequivalent control group design. Students in the experimental class used a blended learning model assisted by google classroom, while students in the control class used a conventional learning model. Based on the results of data analysis, there is a significant difference between the learning outcomes of students in the experimental class and the control class as seen from the Mann Whitney test value, the significance value obtained is 0.000 (p <0.05), it can be concluded that there is a significant effect on the application of the model. blended learning learning assisted by google classroom on student learning outcomes on electrolyte and non-electrolyte solutions.
Identifikasi Kesulitan Belajar Siswa dalam Memahami Konsep Kimia Koloid di Kelas XI SMA
Authors: Laliyo Lukman , Djalil Moh. Rifaldi , Bialangi Nurhayati
Published: January 2025

Penelitan ini bertujuan untuk mengetahui kesulitan belajar siswa dalam memahami materi kimia koloid berdasarkan indikator. Penelitian ini dilakukan di salah satu SMA Kota Gorontalo dengan jenis penelitian deskriptif kualitatif, Poplasinya adalah seluruh kelas XI. Sampel penelitian ini sebanyak 60 siswa yang diambil dari kelas XI tersebut. Instrument yang digunakan adalah instrument tes diagnostik Three-tier multiple choice dengan 15 butir soal. Hasil uji coba instrument diperoleh validitas isi sebesar 97,7%. Hasil penelitian ini diperoleh bahwa (1) Kesulitan Belajar siswa pada materi koloid tergolong tinggi dan terletak disemua indikator pada materi koloid; (2) Kesulitan tertinggi terletak pada menganalisis pembuatan koloid degan persentase kesulitan belajar sebesar 79,15% dan dikategorikn tinggi. Fakta ini menunjukkan bahwa kesulitan belajar siswa pada materi koloid tergolong tinggi.
Meningkatkan Kemampuan Berpikir Kritis dan Pengambilan Keputusan Peserta Didik melalui Penggunaan Model Group Investigation pada Materi Stoikiometri Pokok Bahasan Konsep Mol Kelas X MIA SMA Muhammadiyah 2 Banjarmasin
Authors: Meri  , Kusumawardhani Ratna , Widiyowati Iis Intan
Published: January 2025

Abstract
This study aims to determine the relationship between study habits during thepandemic COVID-19and the chemistry learning achievement of class X State Senior High School students in West Kutai Regency. The population used was all X grade students from three public high schools in West Kutai Regency consisting of SMAN 1 Linggang Bigung, SMAN 1 Long Iram and SMAN 2 Sendawar with non- probability sampling using purposive sampling method and obtained a sample of 129 students. The instrument used was a study habit questionnaire. This type of research isresearch ex past facto. Data analysis used descriptive statistics and inferential statistics, namely simple linear regression analysis with a significance level of 5%. Based on the results of descriptive data analysis, it was obtained that students' study habits were in the medium category with a percentage of 35.66% and student achievement variables were in the medium category with a percentage of 31.78%. From the results of inferential analysis using simple linear regression, the t-test obtained a significance of 0.583 > 0.05, indicating that there is no relationship between study habits and academic achievement in class X State Senior High School Students in West Kutai Regency.
 
Keywords
Study Habits, Chemistry Study Achievement, COVID-19.
Efektivitas Proses Oriented Guided Inquiry Learning (Pogil) Berbasis Isu Sosiosaintifik (Ssi) Terhadap Kemampuan Berpikir Kritis Siswa
Authors: Lisa Utami
Published: January 2025

The implementation of discussion in learning activities based on problem in schools could improve students' critical thinking skills.  However, in its implementation, there were still several problems, one of them was the lack of students' ability in solving the problems.  So, there needs to be a learning model that could create the learning based on problem.  This research aimed at knowing 1) difference of students' critical thinking abilities, 2) the effectiveness of learning using POGIL model based on SSI students' critical thinking skills.  This research was conducted in the even semester of 2021/2022 Academic Year at X MIPA grade of Senior High School Taruna Mandiri Pekanbaru on electrolyte and non-electrolyte solutions materials.  It was an experimental research with pretest and posttest nonequivalent control group design.  T-test (knowing difference of students' critical thinking abilities) and N-gain test (knowing the level of effectiveness) were used for analyzing the data.  The results of this research showed that 1) there was a difference of students' critical thinking skills between the experiment and control groups, the posttest average scores of critical thinking skills in the experiment group was 82.00 and the control group was 75.21, the result of t-test obtained that a significance value was 0.002 < 0.05, so that null hypothesis (Ho) was rejected and alternative hypothesis (Ha) was accepted.  2) Learning using the POGIL (Process Oriented Guided Inquiry Learning) model was effective on students' critical thinking skills.  The N-gain value of the experimental group from each student: there were 28 students in the high N-gain category (93.33%) and 2 students in the medium N-gain category (6.67%) who were into the effective category.  The conclusion was learning using the POGIL (Process Oriented Guided Inquiry Learning) model was effective on students' critical thinking skills.
Meningkatkan Kemampuan Berpikir Kritis dan Pengambilan Keputusan Peserta Didik Melalui Penggunaan Model Group Investigation Pada Materi Stoikiometri Pokok Bahasan Konsep Mol Kelas X MIA Sma Muhammadiyah 2 Banjarmasin
Authors: Aditya Saputra Muhammad , Hamid Abdul , Winarti Atiek , Aufa Mohamad Nor , Hasbie Muhammad , Fitri Muhammad Awaluddin
Published: January 2025

Research has been conducted using the Group Investigation model of mole concept material. The aim of this study used to enhance critical thinking and decision making about the concept material of the mole. The subjects of the study were 32 high school students at Muhammadiyah 2 Banjarmasin in X grade Mathematics and Natural Sciences School Year 2018/2019. Research using test and non-test instruments. Research that resulted in increased aspects of the attitude of students increased from the good enough category with a score of 8.14 to a good category with a score of 11.52, the skills of students increased from the category of quite skilled with a score of 8.15 being skilled with a score of 10.82, critical thinking learners from the indicators (1) examine the questions (2) decide on actions (3) weigh the researcher's report and induce a quite critical category with an average score of 54.28 increasing to 62.76 and categorized as critical, and learning outcomes aspects of students' knowledge from completeness 65.73% to 75.94, as well as students' decision making from indicators 1) predicting risk 2) identifying choices 3) analyzing information 4) determining choices increasing from category quite well with an average score of 39.71 becoming 51, 17 and categorized as good
Validasi Instrumen untuk Menilai Kegiatan Pelaksanaan Kuliah Praktikum Mahasiswa di Laboratorium Pendidikan
Authors: Mujakir Mujakir , Sabarni Sabarni , Safrijal Safrijal , Ardiansyah M. Edo , Zainuddin Zainuddin
Published: January 2025

Based on the results of the analysis and evaluation of the implementation of practicum activities at the chemistry education laboratory at UIN ar-Raniry Banda Aceh, lecturers supporting the chemistry practicum course are still constrained in assessing the activity of implementing practicum lectures in the laboratory. Objective How to validate practicum instruments to assess the activities of implementing practicum lectures that are developed. This type of research includes research and development (R&D). The population in the study was students who carried out chemistry practicums in the chemistry education laboratory at UIN Ar-Raniry Banda Aceh. The sample in this study were 30 students in third semester chemistry education. Instrument validation was developed using the FGD technique through five experts from different universities. The data obtained were analyzed based on the average score for each aspect given by the validator. The validity of each aspect of the developed instrument is determined based on the average total score for all aspects. The validity is described by referring to predetermined criteria. The results of the validation show that the developed instrument obtains a score of 94,73 or is included in the valid category.
Analisis Perspektif Lingkungan Pembelajaran Mahasiswa Tingkat Pertama Perguruan Tinggi
Authors: Nurmalita Rahma , Nur'aini Ruhul Aflah , Hasyim Nur Wakhid
Published: January 2025

The purpose of this study is to analyze the perspectives of a university or college-level classroom learning instrument, the college and university classroom environment inventory (CUCEI), and then use it to compare students' actual and preferred perceptions of their classroom learning environments at the upper secondary and higher education levels. This study also examined differences in perceptions according to faculty and student expectations. A sample of 30 students participated in this study. The reliability of the modified CUCEI scale ranged from 0,28 to 0.88 for actual form and 0,65 to 0.94 for preffered form. When the two forms of instruments were compared, students in the first year of higher education had a perception of an actual learning environment that was less good than ideal in the cooperation dimension. Therefore, there is a need to improve the learning environment on the cooperation aspect.
Hilirisasi Penelitian Rekonstruksi Sains Ilmiah Berbasis Pengetahuan Masyarakat Mengenai Budaya Ngeteh sebagai Kearifan Lokal Bangsa Indonesia
Authors: Sudarmin  , Widiyatmoko Arif , Setiawan Beni , Sri Endang Pujiastuti Rr
Published: January 2025

Indonesia has known tea and ngeteh culture since its ancestors and until now this culture has been preserved. Thus "Ngeteh" is the local wisdom of the Indonesian people. The community also has knowledge about the diversity of tea, the benefits of tea for health, how to make tea, and know the taste and aroma of tea. This research aims to downstream the results of the reconstruction of the original knowledge of the community into a culture of tea in the context of ethnoscience as a vehicle for learning chemistry, as well as for the conservation of tea culture as a form of Indonesian local wisdom. This type of research is research with an ethno-scientific approach which includes data collection activities, verification and reduction, conceptualization and validation, as well as scientific reconstruction and explanation. The results of the reconstruction of scientific knowledge are documented as a learning resource for organic chemistry of natural materials and to equip students with the character of local wisdom. Data analysis was carried out in a descriptive qualitative manner regarding the results of the reconstruction of scientific knowledge based on community knowledge regarding the Ngeteh culture. The results of the study were concluded. The results of the analysis of the discussion data can be concluded (1) the process of reconstruction and explanation of the community's knowledge about tea, tea water, tea making, tea culture and its benefits for health has been produced, (2) informants as research subjects stated that tea and tea have been well known by the people of Indonesia and tea has benefits for the body (3) the method of making tea, ngeteh, and the taste of tea water contains scientific concepts related to chemical concepts regarding the process of extraction, oxidation, enzymatic reactions, and (3) in tea, tea water contains secondary metabolites of alkaloids, flavonoids, tannins and saponins which cause bitterness and cure disease
Pendekatan Dilemmas Storiesdalam Pembelajaran Kimia pada Materi Larutan Penyangga dengan Metode Think Pair Square(TPSq)
Authors: Lisdiana Hayyun , Hadinugrahaningsih Tritiyatma , Rahmawati Yuli
Published: January 2025

The aim of this study is to understand the integration and implication of dilemmas stories approach in learning the buffer solution using the think pair square (TPSq) method related to students‟ soft skills. The subject of this study is XI MIA 5 Senior High School 2 Tangerang, of forty students. This study is conducted from January 2015 until July 2015. This study used interterpretivism paradigm approach using the qualitative method. The focused of this study is the learning process and implication using dilemmas stories in learning the buffer solution using the think pair square (TPSq) method. This study consists two steps: preparation step and execution step. The sources of the data are the interviews with the students, the students reflective journals, and class observation supported by CCVLES questionnaire consisting seven indicators. The data collecting procedure refers to the seven indicators: emotion towards the story, plot, teacher support, teamwork, communication empathy, critical thinking, and contextual chemistry. Quality standards used in this study are credibility by using prolonged engagement, progressive subjectivity, dan member checking.
Based on this study, it is found that the students are interested and motivated to learn chemistry through stories. They also learn to work in team, learn to appreciate other‟s opinions, and learn to solve problems in chemistry by thinking critically. Confidence, responsibility, curiosity, and creativity can be seen through the posters and videos created by the students in the final step of the learning. Dilemmas Stories can be used as an alternative in learning the buffer solution.
Uji Validitas dan Respon Siswa Pengembangan E-Modul Kimia Berbasis Science, Environment, Technology, Society (SETS) Terintegrasi Nilai-Nilai Keislaman Pada Materi Sistem Koloid
Authors: Zeni Aprilia Lovty , Sri Wahyuni Tutik
Published: January 2025

Teaching materials that can be used for self-study by students, stimulate students' thinking skills by associating chemical concepts with approaches to science, environment, technology, and society as well as containing the integration of Islamic values are needed so that students get a complete concept andit is hoped that students can apply the concept to the real situations. This research aims to develop e-module based Science, Environment, Technology, and Society (SETS) which is integrated with Islamic values in colloidal system material. This researchand development use 7 stages of the RnD model from Sugiyono, namely potential problems, information gathering, product design, design validation, design revision, product manufacture, and limited product trials. The research instruments were needs analysis questionnaires, validation sheets, and student response questionnaires. E-module that was developed was validated by three validators to measure its validity in terms of material, media, and the integration of Islamic values. Product revisions were carried out according to the suggestions of the validators, then limited tests to find out student responses to the e-module being developed. The results of the validation of material experts, media, and integration of Islamic values successively obtained an average percentage of 96.0%, 95.1%, and 85.0% with very valid categories. The results of student responses obtained an average percentage of 83.6% in the very good category.
ANALYSIS OF TEST ITEMS ANALYSIS OF TEST ITEMS OF FINAL EXAMINATION OF THE SECOND SEMESTERS ON CHEMISTRY SUBJECT OF XI NATURAL SCIENCE AT STATE SENIOR HIGH SCHOOL 6 PEKANBARU IN ACADEMIC YEAR OF 2015/2016
Authors: Tengku Syarifah Wikasari
Published: January 2025

There were many factors causing problems encountered in the learning process, one of them was the learning instrument used and created by the teacher.  Learning instrument can be as test items.  This research aimed at knowing the quality of test items of final examination of the second semester on Chemistry subject of XI Natural Science at State Senior High School 6 Pekanbaru in the Academic Year of 2015/2016 in terms of qualitative and quantitative aspects.  Sample of this research was all student answer sheets of XI Natural Science (XI Natural Science 1 to 6) comprised 192 students.  Test items of final examination of the second semester comprised 30 multiple choice questions.  Research findings showed inappropriate test items in term of qualitative aspect, there were 8 (26.7%) test items in term of material, 12 (40%) test items in term of construction, and 23 (76.6%) test items in term of language.  Whereas in the quantitative aspect, 3 (10%) test items were not valid.  High reliability test items were 0.72.  In term of discriminator, there were 3 (10%) test items were on bad category, 11 (36.7%) test items were on medium category, and 16 (53.3%) test items were on good category.  In term of difficulty level, there were 2 (6.9%) test items were on difficult category, 22 (72.4%) test items were on medium category, and 6 (23%) test items were on easy category.  27 (23%) options of distractors were not working.  It could be concluded that the percentage of inappropriate test items in qualitative aspect was 47.7% meaning that the quality of test items was enough.  In quantitative aspect validity, reliability, and discriminator were on good criteria, whereas difficulty level and distractor were on enough criterion.
Peningkatan HOTS pada Mata Pelajaran Green Chemistry Menggunakan Model Problem Based Learning
Authors: ELSYE DAMAYANTI PINGKAN
Published: January 2025

High-Ordered Thinking Skills (HOTS) are skills that must be possessed by students in the 21st century. To obtain good HOTS, a HOTS-based learning model is needed. State Senior High School (SMAN) 2 Jonggol, West Java, is one of the schools that has implemented the Independent Curriculum since 2020. The Independent Curriculum requires HOTS-based learning such as Project Based Learning (PjBL), and Problem-Based Learning (PBL). This means that SMAN 2 Jonggol has implemented HOTS-based learning. However, based on the results of interviews with chemistry teachers, students' HOTS was still low, indicated by students who tended to be passive and had difficulty concluding learning material. Therefore, this study uses a problem-based learning model to analyze the increase in HOTS in green chemistry material. This study uses the Classroom Action research method. The sampling technique in this study was purposive sampling, with a total of 42 students. The results of the Wilcoxon test have a Positive Ranks value at N of 42. This explains that there is an increase in student HOTS after using the problem-based learning model. So, it can be concluded that the problem-based learning model affects increasing students' HOTS skills.
Veronika, dkk PENGARUH RESPON TENTANG MEDIA VIDEO PEMBELAJARAN TERHADAP HASIL BELAJAR MATERI LARUTAN ELEKTROLIT NON ELEKTROLIT SMA GELEKAT LEWO BORU TAHUN 2020/2021
Authors: Tinenti Yanti Rosinda
Published: January 2025

The main objectives of this study are (1) to determine the validity of the learning video media for electrolyte and non-electrolyte solutions. (2) Knowing the response of students about learning videos on electrolyte and non-electrolyte solution materials. (3) Knowing the learning outcomes of students who use learning videos on electrolyte and non-electrolyte solutions. (4) Knowing the relationship of students' responses to learning video media on student learning outcomes after using learning videos on electrolyte and non-electrolyte solution materials. (5) Knowing the effect of student responses on learning video media on student learning outcomes after using learning videos on electrolyte and non-electrolyte solution materials. Based on the results of data analysis and discussion, it can be concluded that (1) The validation of the learning video media is declared valid with a validity value of 92.5. (2) The responses of class X IPA students at SMA Geangkat Lewo Boru for the Academic Year 2020/2021 are included in the very good category with an average percentage of 83%. (3) The learning outcomes of class X IPA students at SMA Geangkat Lewo Boru for the Academic Year 2020/2021 were declared complete with an average score of 85. (4) There was a significant relationship between responses and student learning outcomes. students of class X science at Geangkat Lewo Boru High School for the 2020/2021 academic year with a correlation coefficient of 0.55 (5) There is a significant effect between the response and learning outcomes of students in class X science at Gelekat Lewo Boru School Year 2020/2021 with a simple regression equation of Y = 57.64 + 0.33x.
Learning Number Patterns through Batik and Webbing Motifs: An Ethnomathematics Study in Kudus
Authors: Lestari Mulyaningrum , Malasari Putri Nur
Published: January 2025

Number pattern learning lacks a link to everyday life. This research aims to find the concept of number patterns in batik and weaving motifs in the Japanese village of Kudus Regency. Qualitative approach with ethnographic model was used in this research. The subjects of this research were woven craftsmen in Japanese village, batik craftsmen in Alfa Shoofa Batik Kudus and Muria Batik Kudus. Data collection techniques used interviews, observation, and documentation with research instruments in the form of interview guidelines, documentation, and field notes. The results of the research found the concept of arithmetic sequence in Kudus batik motifs. Kudus batik motifs form an arithmetic sequence with a difference of 6 and a difference of 3. In addition, odd and even number sequence patterns were found. Meanwhile, in the weaving of the Japanese village community, an arithmetic sequence with the formula Un = 2n -1 (odd number pattern) and Un = 2n (even number pattern) was found. The research findings can be developed as a learning resource for number patterns in mathematics learning.

 

Pembelajaran pola bilangan kurang mengaitkan dengan kehidupan sehari-hari. Penelitian ini bertujuan untuk menemukan konsep pola bilangan pada motif batik dan anyaman di desa Jepang Kabupaten Kudus. Pendekatan kualitatif dengan model etnografi digunakan dalam penelitian ini. Subjek penelitian ini adalah pengrajin anyaman di desa jepang, pengrajin batik di Alfa Shoofa Batik Kudus dan Muria Batik Kudus. Teknik pengumpulan data menggunakan teknik wawancara, observasi, dan dokumentasi dengan instrumen penelitian berupa pedoman wawancara, dokumentasi, dan catatan lapangan. Hasil penelitian ditemukan konsep barisan aritmatika pada motif batik Kudus. Motif batik Kudus membentuk barisan aritmatika dengan beda 6 dan beda 3. Selain itu, ditemukan pola barisan bilangan ganjil, dan genap. Sementara pada anyaman masyarakat Desa Jepang ditemukan barisan aritmatika dengan rumus Un = 2n -1 (pola bilangan ganjil) dan Un = 2n (pola bilangan genap). Temuan penelitian dapat dikembangkan sebagai sumber belajar pola bilangan pada pembelajaran matematika.
Ethnomathematics Exploration of Simo Dance and Gringsing Batik Dance from Batang Central Java in Mathematics Learning
Authors: Fahmy Ahmad Faridh Ricky , Saputra Moh. Alwi Andiansyah , Shandy Kevin Fredika
Published: January 2025

Culture in Each region's culture has unique characteristics, which are often expressed through dance. As a cultural form, dance serves as a way to express emotions through body movements. In Batang Regency, there are two folk traditions called the Simo Dance and Gringsing Batik Dance. The movements of the two dances consist of forward beksan, beksan, and backward beksan movements. This research used a descriptive qualitative method with an ethnographic approach. Observations, interviews and literature studies were carried out as data collection tools. The results indicate that mathematical concepts are present in the dances, including activities such as counting, patterns of hand and foot movements, and floor formations. These involve geometric concepts like plane shapes, spatial shapes, angles, and reflections. Further research can be developed from other aspects, such as clothing and musical notation which are related to mathematics.

 

Budaya di setiap daerah memiliki karakter tersendiri, termasuk kesenian tari. Tari sebagai bentuk budaya merupakan corak ekspresi perasaan yang dituangkan dalam gerakan tubuh. Di Kabupaten Batang, ada sebuah tradisi kerakyatan yaitu Tari Simo dan Tari Batik Gringsing. Gerakan kedua tari tersebut terdiri dari gerakan maju beksan, beksan, dan mundur beksan. Penelitian ini menggunakan metode kualitatif deskriptif dengan pendekatan etnografi. Adapun observasi, wawancara dan studi pustaka dilakukan sebagai tahap pengumpulan data. Hasil penelitian menunjukkan bahwa terdapat aktivitas matematika seperti menghitung, pola gerakan tangan, kaki, dan pola lantai yang menggunakan konsep geometri seperti bangun datar, bangun ruang, sudut, dan refleksi. Penelitian lebih lanjut dapat dikembangkan kembali dari aspek lain, seperti busana, dan notasi musik serta hubungannya dengan matematika.
ASA Class Is a Stronger Predictor of Early Revision Risk Following Primary Total Knee Arthroplasty than BMI
Authors: Wall Christopher J. , de Steiger Richard N. , Vertullo Christopher J. , Harries Dylan , Kondalsamy-Chennakesavan Srinivas
Published: January 2025

Background:

Although there is a known correlation between obesity and revision risk following total knee arthroplasty (TKA), there is an ongoing debate regarding the appropriateness of denying TKA solely based on the body mass index (BMI) of a patient. Our aim was to determine whether a patient’s American Society of Anesthesiologists (ASA) class predicts their risks of early all-cause revision and revision for periprosthetic joint infection (PJI) following primary TKA, independent of their BMI.

Methods:

Data from the Australian Orthopaedic Association National Joint Replacement Registry (AOANJRR) were obtained regarding all patients who underwent primary TKA for osteoarthritis in Australia from January 1, 2015, to December 31, 2022. Estimated hazard ratios of all-cause revision and revision for PJI, as well as predicted risks of revision within 3 months, 1 year, and 2 years, as a function of patient ASA class and BMI, were calculated with use of multivariable Cox proportional hazards models.

Results:

A total of 274,786 primary TKAs (54.5% female; mean age, 68.3 years) were included in the study, of which 5,401 were revised during the study period. Compared with BMI, ASA class was a stronger predictor of the risks of all-cause revision and revision for PJI following primary TKA. Patients with an ASA class of 3 to 4 had higher risks of all-cause revision and revision for PJI at multiple time points after TKA compared with patients with an ASA class of 1 to 2, regardless of BMI.

Conclusions:

Although ASA class and BMI are theoretically interrelated variables, we found that a patient’s ASA class was more strongly associated with their risks of early all-cause revision and revision for PJI following primary TKA than their BMI. Employing a BMI threshold in isolation when assessing fitness for TKA may be inappropriate, and surgeons should give greater weight to the other medical comorbidities and general perioperative fitness of the patient. Patients with poorly controlled comorbidities should be referred for medical optimization prior to TKA.

Level of Evidence:

Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.
An Updated Demographic Profile of Orthopaedic Surgery Using a New ABOS Data Set
Authors: Caldwell Lindsey S. , Glass Natalie , Guyton Gregory P. , Elstein David W. , Nelson Charles L.
Published: January 2025

Introduction:

The orthopaedic surgery physician workforce is predominately White and male and has been identified as the least diverse medical specialty. Increasing efforts toward diversification within orthopaedic surgery are underway. Evaluating the effectiveness of these programs requires a thorough understanding of the current demographic profile of the profession.

Methods:

The American Board of Orthopaedic Surgery (ABOS) is the leading board certification organization for orthopaedic surgeons in the United States. The ABOS began collecting self-reported race/ethnicity and sex/gender data of its examinees and diplomates in 2017. This new data set of ABOS was analyzed to describe both the current demographic profile of orthopaedic surgery and trends over time. Underrepresented minority (URM) was defined as a group that is less well represented in orthopaedic surgery than in US census data and includes female, American Indian or Alaska Native, Black or African American, Hispanic/Latino, and Native Hawaiian or Other Pacific Islander categories.

Results:

Of the 21,025 currently practicing ABOS diplomates with time-limited ABOS certificates (issued since 1986), 19,912 (94.7%) provided sex/gender data, and 19,876 (94.5%) provided race/ethnicity data. Approximately 84.78% selected male and 8.43% female. The majority identified as White (73.67%), whereas 16.35% selected a URM race/ethnicity category. There have been significant increases in the proportions of female (odds ratio [OR] = 4.72, 95% confidence interval [CI] = 3.64-6.11, p < 0.001) and URM (OR = 2.31, 95% CI = 1.80-2.96, p < 0.0001). Diplomates among orthopaedic surgeons attaining ABOS board Diplomates from 1989 to present. Among the subspecialties, pediatric orthopaedics reported the highest percentage of females (30.4%). Spine had both the lowest percentage of females (2.63%) and the highest percentage of URMs (8.97%). Sports had the lowest percentage of URMs at 5.63%.

Conclusion:

Orthopaedic surgery in 2023 remains largely White and male. However, there have been promising trends toward diversification of orthopaedic surgery both in terms of gender and race/ethnicity. Specialties within orthopaedics have a wide variety of demographic profiles.

Level of Evidence:

Level IV Retrospective Cohort Study. See Instructions for Authors for a complete description of levels of evidence.
PENINGKATAN SIFAT GLASS-CERAMICS FLY ASH TERVITRIFIKASI DENGAN PENAMBAHAN 30 WT.% ALUMINIUM SILIKAT DAN PENGATURAN SUHU SINTER
Authors: Nurzal Nurzal , Pratiwi Putri , Handra Nofriady , Perdana Mastariyanto , Hafni Hafni
Published: January 2025

Penelitian ini bertujuan untuk mengivestigasi pengaruh penambahan 30 wt.% aluminium silikat serta variasi suhu sinter terhadap densitas dan kekerasan material glass-ceramics berbasis fly ash yang tervitrifikasi. Fly ash merupakan limbah hasil pembakaran batu bara dari Pembangkit Listrik Tenaga Uap Suralaya dan telah lama menjadi permasalahan lingkungan. Sebagai upaya mitigasi dampak tersebut, penelitian ini mengeksplorasi pemanfaatan fly ash dalam produksi material glass-ceramics. Sampel penelitian berbentuk silinder dengan diameter 15 mm dan ketebalan 5 mm dibuat melalui metode penekanan uniaxial pada tekanan 120 MPa. Sampel-sampel tersebut disinter pada suhu 1050 °C, 1100 °C, dan 1150 °C dengan laju pemanasan sebesar 5 °C/menit. Hasil eksperimen menunjukkan bahwa penambahan 30 wt.% aluminium silikat secara signifikan meningkatkan densitas material dari 2,31 menjadi 2,51 g/cm³ serta kekerasan dari 443 menjadi 2418,55 MPa dibandingkan dengan menggunakan 100 wt.%. fly ash. Kondisi optimal densitas dan kekerasan diperoleh pada suhu sinter 1150 °C.