bluuebunny/crossref_metadata_2025 huggingface dataset:
Changes in land use impacted air temperature in Bekasi Regency
Authors: Priambodo Okta Nindita , Wachjar Ade , Pratama Anugerah Rafi , Sahfitri Muhammad
Published: December 2023

Indonesia is experiencing dynamic land change. One area in Indonesia that has experienced high land use change is Central Cikarang District. Landsat 9 image sensing and land cover data from the Ministry ofEnvironment and Forestry show the increased temperature in the Central Cikarang District area since 2004. Based on the NDVI analysis, the residential area has increased, and the area of green vegetation hasdecreased. Analysis of temperature changes using satellite imagery also shows a wider distribution of hot temperatures in the 2004–2022 range. From the two data analyses that were carried out, a regression test was carried out to determine the correlation between air temperature and vegetation density. The results of the regression test obtained an R2 value of 7.2%. It is also known that the value of the regression coefficient is negative, which means that the correlation of the two data is inversely proportional. So this research analyzes changes in land cover to changes in temperature.
The Analysis of sustainability factors underlying human-monkeys (Macaca fascicularis) conflict at IPB University
Authors: Marpaung Sutan Sahala Muda , Masy'ud Burhanuddin , Has Dini Hardini , Paputungan Nursiti Aisyah , Siregar Imam Maajid As-Shidqi
Published: December 2023

The proximity of the Macaca fascicularis habitat to locations of human activity, especially in the IPB University area, disrupts human activity, especially in the morning and evening. The act of Maccaca fascicularis entering human territory increases the potential for human conflict with Macaca fascicularis. This research aims to identify the variables that cause conflict in the IPB Dramaga Campus environment by describing the intensity of influence and interdependent relationships between variables and grouping them from the most influential to the least influential. This research was conducted at IPB University, Bogor, Indonesia in 2021. The object of this research was the Macaca fascicularis group located at the IPB Dramaga Campus. Data collection was carried out by applying the Focus Group Discussion method to determine the influencing variables and human conflict with Macaca fascicularis. Data analysis was carried out using the Micmac Method. Based on the research results, there are factors that influence food, vegetation, culture, and the important role of human activity, land, population, and mitigation. The Primate Animal Study Center (PSSP) in collaboration with the Bogor BKSDA is making efforts to overcome disturbances using the Trapping Cage method, which is a method carried out by storing iron cages filled with fruit such as bananas and others in several locations that are suspected to be frequently visited areas and Increase the active role of the community around the IPB campus which is affected by long-tailed monkeys by providing incentives for people who are able to catch long-tailed monkeys without causing harm.
Overview of Breast Examination Screening in Labuhan Haji and Pengadangan Village East Lombok Regency
Authors: Apryani Reny , Djannah Fathul , Zuhan Arif
Published: December 2023

Breast lump is a condition that is often experienced by many women. Breast cancer is ranked second after cervical cancer which is most common suffered by women in the world. This article was written with the aim of early detection of breast lumps and the number of cancer cases. The subject of this study was a ≥18-year-old woman in Labuhan Haji Village and Pengadangan East Lombok Regency. This study used a non-analytical obssional descriptive method using a cross-sectional study. The data that has been obtained will be analyzed descriptively in the form of diagrams. The results of this study can be concluded ingeneral that the type of lump neoplasma found FAM (Fibroadenoma) which is as many as 7 respondents compared to other types of tumors. The type of non-neoplasma lump that was found in this study was Fibrocystic disease or commonly called fibrostic as many as 6 respondents. Mammae aberans were found in this study, namely as many as 2 respondents aged 53 and 60 years. Ductal Carcinoma or breast cancer with ductal type as many as 1 respondent with the age of 60 years. Ginecomastia there was 1 male respondent aged 33 years.Each tumor in the breast has a tendency to occur in a certain age range and each tumor in the breast has a type of benign and malignant tumor.
Hypoparathyroidism: Early Detection and Diagnosis Approaches
Authors: Shafa Rizqina Alya
Published: December 2023

Hypoparathyroidism is an endocrine disorder characterized by low or absent production of parathyroid hormone (PTH). The most common cause of hypoparathyroidism is injury to the parathyroid glands or unintentional removal during thyroid surgery. The author aims to explore further the early detection and diagnostic approaches for hypoparathyroidism. The search was conducted through the Pubmed database using the keywords "Detection AND Diagnose AND Hypoparathyroidism." A total of 183 results were obtained. However, after applying inclusion and exclusion criteria, 7 publications were used in this literature review. The diagnosis of hypoparathyroidism is established through the assessment of clinical symptoms, physical examination, and laboratory tests.
Morphological Appearance of M3 Generation Mutant Strains of Brown Rice (G16) to Support Rice Seedingi in Upland
Authors: Chandraningsih Ria Ayu , Fauzi Taufik , Suwardji  , Sudharmawan Anak Agung Ketut
Published: December 2023

Brown rice local cultivars are found in West Nusa Tenggara, but brown rice is still very rare to be used as a source of genetic diversity and its improvement is also lacking to be considered. This research aims to determine the effect of 300 Gy gamma ray irradiation on the quantitative properties of third generation G16 brown rice (M3) in the uplands. In this research, an experimental method was used with field experiments from May to December 2022 in Tatar Hamlet, Nyurlembang Village, Narmada District, West Lombok Regency. This research used Randomized Block Design (RBD) in an Augmented design with 18 treatments consisting of 15 G16 mutant strains and 3 comparison plants. The data obtained were analyzed using Analysis of Variance (Anova) with a level of 5%, then the real different treatment was further tested using the Least Significance Different (LSD) test. Based on the results of the research, it was obtained that some of the quantitative traits observed did not have differences in the properties of the elders and their comparators. The morphological apperance of mutant plants is the same as that of both the elders and the comparison varieties. However, it can be said that all strains based on their morphological appearance have the potential to be developed on dry land, because all strains tested show the same results compared to their elders and peers.
Review Paper: Use of Vetiver (Vetiveria zizanoides L.) and Rice Husk Biochar in Remediation of Mercury (Hg) Polluted Soil
Authors: Rohmaniati Baiq Siti , Fauzi Taufik , Sudharmawan A. A. Ketut , Suwardji
Published: December 2023

Indonesia has abundant natural resources. One of the great natural resources is mineral resources in the form of gold. With this potential, the number of national mining locations continues to increase, both large, medium, small and unlicensed gold mining (PETI) carried out directly by the community, either in groups or individually, which can have a negative impact on the environment. pollution such as land and water. , because the results of gold processing which contain heavy metals (Hg) are immediately thrown away without any further processing. This can harm the surrounding environment and even enter the food chain. Therefore, the purpose of this paper is to study and find out related information regarding the effectiveness of phytoremediation of soil contaminated with heavy metals such as mercury (Hg) using vetiver (Vetiveria zizanoides L.) and soil ameliorant materials in the form of rice husks. biochar to reduce the concentration of these heavy metals, as well as the mechanisms involved in phytoremediation of soil contaminated with heavy metals. The vetiver root plant (Vetiveria zizanoides L) is very effective for use in remediating soil contaminated with mercury (Hg) or other heavy metals. The use of biochar can influence the growth and absorption of heavy metals by vetiver (Vetiveria zizanoides L). Biochar is also able to improve the physical and chemical properties of soil and stabilize heavy metals in the soil.
Identification Tree Damage on The Green line of The Mataram City
Authors: Faizin Ruhil , Ichsan Andi Chairil , Valentino Niechi
Published: December 2023

Street Arya Banjar Getas – Dr. Sujono is one of the green open spaces in the form of lanes in Mataram City. Visually, trees along street Arya Banjar Getas– Dr. Sujono Mataram City experience disturbances in the growth phase caused by biotic and abiotic factors. This study aims to obtain information on the type and extent of tree damage in the Green Open Space area along street Arya Banjar Getas and Dr. Sujono in Mataram City. The method used in collecting primary data and secondary data on tree damage is by census or analyzing all trees in the two green lines of Mataram City. The number of vegetation species found on the green line is 19 with 832 individual trees. The 4 most dominant species found on the green line are Angsana (Pterocarpus indicus) with 244 individuals, Mahogany (Swietenia mahagoni) with 144 individuals, Flamboyan (Delonix regia) with 108 individuals and Canary (Canarium ovatum) with 101 individual trees. Based on the FHM (Forest Health Monitoring) book and using the parameters of tree damage values (Tree Level Index), 3 categories of damage to the green line were obtained, namely with a percentage of healthy class 91%, medium class 7%, and sick class 3%.
Regeneration of Cattleya Amazing Thailand in ½ MS Medium with The Addition of Several Concentration of PGR and Coconut Water
Authors: Fitria Asnul , Noli Zozy Aneloi , Tjong Djong Hon
Published: December 2023

One of the Cattleya species with aesthetic and commercial value is Cattleya Amazing Thailand. An efficient protocol with a high rate of plantlet regeneration is through in vitro culture. Plantlet regeneration is affected by the addition of a Plant Growth Regulator (PGR). Auxin and cytokinin (2,4-D and BAP) combined with PGR from organic material such as coconut water can increase the growth of leave and roots in plantlet regeneration. The research aims to determine the best PGRs combination in regenerating the  Cattleya Amazing Thailand orchid in vitro. The research used the Completely Randomized Design (CRD) experimental method for five treatments. The parameter are survival rate, number of leave, and number of roots. Survival rate was analyzed descriptively and both of number of leave and roots were analyzed statistically. All treatments can form 100% plantlets on survival rate parameter. The treatment of 0.1 mg/L 2,4-D + 1 mg/L BAP gave significantly different results in the number of leaf (9.0) and was not significantly different in the number of root. 0.1 mg/L 2,4-D + 1 mg/L BAP is the best combination for in vitro regeneration of the Cattleya Amazing Thailand orchid.
Effects of Land Application of Farm Dairy Effluent on The Growth of Sweet Corn
Authors: Nurcahya Intan , Permana Indra , Windiastuti Erviyana , Nuralam Rizki
Published: December 2023

This study investigates the impact of land application of farm dairy effluent (FDE) on the growth and yield of sweet corn (Zea mays var. saccharata). The agricultural sector faces increasing challenges in managing effluents sustainably, and the utilization of FDE as a potential nutrient source for crop production has gained prominence. Field experiments were conducted to assess the effects of FDE application on sweet corn with different rate of irrigation. Randomized completely block design was used an experimental design with different irrigation rate i.e. A = 0% FC effluent, B = 25% FC effluent, C = 50% FC effluent, D = 75% FC effluent, and E = 100% FC. The collected data was analyzed by using ANOVA with 5% of significance, a further test is performed using duncan multiple range test. The results showed that  FDE had TDS, TSS, BOD and COD higher than the standard with values ​​of 1398 mg/L, 2575 mg/L, 3611 mg/L and 6374 mg/L respectively. The application of FDE significantly influenced sweet corn growth especially on height and leaf increment. The application of FDE with 100% FC tends to have higher leaf increment than other treatments at 35 DAA (day after application).
Problems in Writing Passive Voice: A Case Study in the EFL Classes
Authors: Jannah Alda Raudatul , Wilian Sudirman , Zamzam Ahmad , Arafiq Arafiq , Arfah Hajriana
Published: December 2023

This study addresses EFL students' challenges at a state university in Mataram, Indonesia, in constructing passive voices in the present and past tense. This study was focused on verb tense changes, subject-verb agreement, pronoun usage, and appropriate use of "by" in passive voice constructions. It also aims to explore the causes of these issues and offers insights into potential solutions. With a descriptive qualitative approach, the data were collected using a set of written grammatical tests of passive voices and open interviews. The adopted validated test was completed by thirty students as the participants of this study. The data were analyzed descriptively using an in-depth reading analysis method on the test results and participant responses. The results reveal a need for fundamental grammatical knowledge, limited exposure to passive voice, inadequate practice opportunities, and unclear explanations as contributing factors to the challenges. Language transfer from native languages and a lack of feedback compound the problem. To address these issues, the study recommends basic tense understanding, increased practice, targeted feedback, and exposure to authentic materials to enhance students' proficiency in constructing accurate passive voice sentences.
Pengembangan Media Boneka Jari Untuk Meningkatkan Kemampuan Bahasa Ekspresif Anak Usia Dini
Authors: Azmi Rujiatul , Astini Baik Nilawati , Rachmayani Ika , Fahruddin Fahruddin
Published: December 2023

Penelitian ini dilatarbelakangi dengan kemapuan bahasa ekspresif anak yang belum berkembang, hal ini dilihat pada saat proses pembelajaran berlangsung. Penelitian ini bertujuan mengembangkan media boneka jari untuk meningkatkan kemampuan bahasa ekspesif anak usia dini. Penelitian ini merupakan jenis penelitian Research and Development (R&D) menurut Sari (2015) dengan menggunakan model pengembangan Borg and Gall. Tempat dilakukan penelitian yaitu di PAUD Syafaatul Ikhwan Tetebatu. Subjek penelitian ini adalah anak kelompok B sebanyak 12 orang. Sedangkan, objek penelitian ini adalah media boneka jari untuk meningkatkan kemampuan bahasa ekspresif anak. Instrumen penelitian yang digunakan adalah observasi dan dokumentasi. Teknik analisis data dalam penelitian ini menggunakan skala likert dengan skor penilaian yaitu 1 sampai 5. Hasil penelitian ini menunjukkan bahwa media boneka jari untuk meningkatkan kemampuan bahasa ekspresif anak mendapatkan presentase 82,8% dengan kategori sangat layak dari ahli materi, presentase 83, 6% dengan kategori sangat layak dari ahli media, presentase 96% dengan kategori sangat layak dari validasi instrumen, presentase pada tahap I sebanyak 74,59% dengan kategori cukup baik, dan tahap II sebanyak 88,74% dengan kategori baik dari respon siswa. Oleh karena itu, dapat disimpulkan berdasarkan hasil penelitian bahwa media boneka jari untuk meningkatkan kemampuan bahasa ekspresif anak sudah layak untuk digunakan sebagai media belajar di kelompok B PAUD Syafaatul Ikhwan Tetebatu.
Analysis of Students Scientific Reasoning Ability and the Correlation to Students Cognitive Ability in Physics Learning
Authors: Kamaluddin Kamaluddin , Sani Nurul Kami , Darmadi I Wayan , Nurgan Nurgan
Published: December 2023

This study aims to identify students scientific reasoning ability in Palu city and the correlation between students’ scientific reasoning abilities and their cognitive aptitude within the context of physics education. In this study, we adopted a descriptive quantitative research method where the respondents consist of four high schools in Palu city, namely SMAN 1, SMAN 7, SMAN 6, and SMAN 4 Palu. An instrument by Lawson (LCSTR) was adapted for this study and it consist of 12 items two tier multiple-choice that contains conservation of mass and volume, proportional thinking, control of variables, probabilistic thinking, correlational thinking, and hypothetical deductive reasoning. Meanwhile, for the cognitive understanding test, we utilized a static fluid concept comprehension test. The findings of this research using SPSS to analyzed find that Pearson correlation coefficient is 0,54 that revealed significant correlations between students’ scientific reasoning abilities and their cognitive aptitude in the context of physics learning. These correlations provided valuable insights into how these components influence each other and impact students’ performance and achievement in physics. The study’s result has implications for educators as a reference in the selection of models and methods of physics learning appropriate to train and develop students scientific reasoning skills.
Adopsi Teknologi Sambung Pucuk Pada Kopi Rakyat Berdasarkan Faktor Internal dan Ekternal Petani Lokal di Provinsi Bengkulu
Authors: Silamat Eddy , Siregar Hermanto , Pambudy Rachmat , Harianto Harianto
Published: December 2023

Implementasi teknologi merupakan salah satu faktor utama yang diduga mempengaruhi fluktuasi produksi dan produktivitas. Pada sektor produktif teknologi sangat penting untuk meningkatkan daya saing dan pembangunan berkelanjutan. Penerapan praktik teknologi yang dikombinasikan dengan keberlanjutan lingkungan selama tahap produksi dan pemrosesan pada tanaman kopi diduga dapat menghasilkan produksi pada capaian tingkatan yang maksimal. Tanaman kopi dapat diperbanyak dengan cara vegetatif yaitu menggunakan bagian dari tanaman itu sendiri, dan generatif yaitu menggunakan benih atau biji. Sambung pucuk (grafting) pada tanaman kopi merupakan perbanyakan secara vegetative. Beberapa kelebihan yang dimiliki perbanyakan cara vegetative antara lain; (1) mempunyai sifat yang sama dengan tanaman tetuanya (induk), (2) mutu hasil yang diperoleh lebih seragam, (3) memiliki dua sifat unggul sekaligus yaitu sifat unggul dari batang atas dan sifat unggul dari batang bawah, dan (4) memiliki umur mulai berbuah (prekositas) lebih awal. sampel frame sebanyak 326 yang terdiri dari 120 sampel frame sambung pucuk (grafting) dan 206 sampel frame kopi yang belum menerapkan sambung pucuk, Multi-stage sampling. Hasil menunjukan factor internal yang melekat pada petani kopi di Bengkulu menjadi pendorong dominan dalam mengadopsi teknologi sambung pucuk (grafting).
PENYULUHAN PENGGUNAAN KOSMETIK HERBAL YANG AMAN PADA KADER PKK DI DESA BENGKAUNG
Authors: Neneng Rachmalia Izzatul Mukhlishah  , Agriana Rosmalina Hidayati  , Dedianto Hidajat  , Candra Eka Puspitasari  , Nisa Isneni Hanifa  , Faizul Bayani
Published: December 2023

Kosmetik herbal merupakan produk atau formulasi perawatan kulit yang mengandung bahan kimia aktif berupa ekstrak yang berasal dari alam seperti tanaman, daun, akar, buah dan bunga yang memiliki khasiat untuk kesehatan kulit. Memilih produk kosmetika herbal yang aman untuk kulit menjadi salah satu tantangan saat ini. Walaupun akses mendapatkan kosmetika sudah sangat mudah, tetapi masih banyak ditemui kosmetik yang beredar di pasaran yang tidak memiliki izin edar BPOM dan mengandung bahan-bahan berbahaya yang jika digunakan akan menimbulkan efek yang merugikan bagi kulit. Kegiatan pengabdian masyarakat dalam bentuk penyuluhan penggunaan kosmetik herbal yang aman pada kader PKK di Desa Bengkaung dilakukan untuk peningkatan pengetahuan kader PKK terkait kosmetik herbal yang aman, legal dan telah memiliki nomor izin edar dari BPOM. Dalam kegiatan penyuluhan ini terdapat peningkatan pengetahuan antara sebelum dan sesudah pemaparan materi (p-value < 0.005). Melalui kegiatan pengabdian ini, dapat disimpulkan bahwa penyuluhan penggunaan kosmetik herbal yang aman pada kader PKK di Desa Bengkaung dapat diimplementasikan untuk pemilihan dan penggunaan bahan herbal atau alami sebagai kosmetik yang aman di kalangan masyarakat.
PENDAMPINGAN PEMANFAATAN MULTIMEDIA WORDWALL BERBASIS LINGKUNGAN PADA GURU-GURU SD
Authors: Evi Yuliza  , Putra Bahtera Jaya Bangun  , Robinson Sitepu  , Elisa Nurnawati  , Fitri Maya Puspita  , Sisca Octarina  , Indrawati
Published: December 2023

Wordwall merupakan media pembelajaran multimedia berbasis web yang dapat diakses secara gratis. Aplikasi ini adalah media yang sederhana, menarik dan mudah digunakan dan dapat memberikan latihan yang dapat dimanfaatkan oleh pendidik dalam penyampaian evaluasi materi. Tingkat keterampilan para guru terhadap metode pembelajaran daring dalam pemberian latihan soal dan evaluasi pembelajaran di SD Negeri 15 Kecamatan Pemulutan Ulu Kabupaten Ogan Ilir dirasakan masih kurang dalam pemanfaatan media pembelajaran multimedia. Perlu ditingkatkan keterampilan guru-guru untuk memperoleh kualitas pendidikan yang maksimal dengan memberikan pendampingan pemanfaatan aplikasi wordwall pada guru-guru SD. Melalui pendampingan ini diharapkan guru dapat memberikan metode pembelajaran yang lebih bervariasi dengan memanfaatkan segala sesuatu yang mudah didapat dari lingkungan sekitar. Metode yang diterapkan dalam kegiatan pendampingan ini adalah melalui ceramah (lecture), latihan (tutorial) dan evaluasi. Berdasarkan hasil pembahasan diperoleh bahwa tanggapan guru-guru terhadap pemanfaatan wordwall berbasis lingkungan sudah sangat baik. Rerata skor dan persentase skor dari peserta menunjukkan bahwa media pembelajaran wordwall berbasis lingkungan dapat meningkatkan kemampuan berpikir logis dan motivasi belajar siswa. Wordwall dapat dimanfaatkan sebagai media pembelajaran sekolah dasar khususnya mata pelajaran matematika, dapat meningkatkan kreatifitas guru dan sebagai media pembelajaran inovatif. Melalui pembelajaran berbasis lingkungan dapat meningkatkan pengetahuan dan pengalaman belajar siswa. Hal ini sangat relevan dengan implementasi merdeka belajar pada pembelajaran abad-21 yang membekali peserta didik dalam menjawab tantangan zaman.
Respuesta de cultivares de frijol a inoculación e incidencia natural del tizón de halo y utilidad de marcadores moleculares para selección
Authors: Jiménez-Hernández Yanet , Montero-Tavera Victor , Ramírez Pimentel Juan Gabriel , Aguirre-Mancilla César L. , Raya Pérez Juan Carlos , Acosta-Gallegos Jorge A.
Published: December 2023

En el Bajío el tizón de halo del frijol [(Pseudomonas syringae pv. phaseolicola (Psph)] causa severo daño a variedades de los tipos Azufrado y Cacahuate Bola. Para identificar genotipos resistentes se inocularon diversos materiales de frijol con dos aislados, razas 2 y 6. Asimismo, se registraron lecturas de la reacción a la infección natural por Psph en campo en dos juegos de líneas de tipo Azufrado evaluadas bajo temporal en Celaya, Guanajuato en 2018, uno con 10 y otro con 16 líneas establecidas en junio y julio, respectivamente. En el laboratorio de marcadores se usaron los iniciadores B10, W13 y T8 asociados a genes de resistencia contra la bacteria en diversos genotipos de frijol para determinar la asociación entre la presencia de los marcadores y la resistencia a Psph. Los genotipos de tipo azufrado establecidos en junio fueron severamente dañados (reacción de 5 a 8 en escala de 1 a 9) por Psph, mientras que los de julio lo fueron en menor grado. En el primer ensayo las condiciones ambientales favorecieron el ataque de la bacteria, condiciones que no se registraron en el segundo ensayo. La mayoría de los genotipos inoculados con la raza 6 en invernadero, resultaron susceptibles. Genotipos positivos para la presencia de los tres marcadores utilizados fueron susceptibles a las razas 2 y 6; es decir, los factores de resistencia marcados no proporcionan resistencia a esas razas. Todos los genotipos evaluados del tipo azufrado de raza Nueva Granada, fueron susceptibles a Psph razas 2 y 6. Entre los genotipos resistentes a la inoculación se encuentran, Flor de Mayo M38, San Rafael, Pinto Laguna 80 y Pinto Saltillo.
Optimasi dosis pupuk NPK dan asam humat dalam memperbaiki kualitas tanah bekas tambang batubara dan pertumbuhan sengon Solomon
Authors:   Fakultas Pertanian, Universitas Jambi, Tampubolon Gindo , Lagowa Muhammad Ikrar ,   Fakultas Sains dan Teknologi, Universitas Jambi, Simarmata Jhoy Michael ,   Fakultas Kehutanan, Universitas Jambi, Sitanggang Boy Julius ,   Fakultas Kehutanan, Universitas Jambi
Published: December 2023

Sengon Solomon (Paraserianthes mollucana (Miq.) Barneby & J.W. Grimes) adalah salah satu spesies tanaman yang digunakan pada kegiatan revegetasi untuk reklamasi tanah bekas tambang batubara. Tanaman sengon Solomon memiliki beberapa kelebihan yaitu cepat tumbuh (fast growing), mampu beradaptasi dengan baik pada lingkungan yang ekstrim, serta mempunyai nilai ekologi dan ekonomi yang tinggi. Tanah bekas tambang batubara secara umum terdegradasi, serta memiliki kandungan bahan organik, ketersediaan hara esensial, KTK dan kejenuhan basa yang tergolong rendah. Kondisi ini kurang mendukung pertumbuhan tanaman yang optimal. Penelitian ini bertujuan untuk mengkaji pengaruh aplikasi pupuk NPK dan asam humat terhadap sifat kimia tanah serta laju pertumbuhan tanaman sengon Solomon. Penelitian dilaksanakan di area reklamasi PT. Nan Riang, perusahaan pertambangan batubara di Desa Ampelu Mudo, Kecamatan Tembesi, Kabupaten Batang Hari, Provinsi Jambi. Penelitian ini menerapkan Rancangan Acak Kelompok (RAK) dengan perlakuan dosis pupuk NPK Plus asam humat sebanyak 9 taraf dan pengulangan sebanyak 3 kali, sehingga diperoleh 27 petak atau unit percobaan. Variabel yang diamati adalah pH, P-tersedia, Al-dd, K-dd, pertambahan tinggi, pertambahan diameter dan berat kering akar. Hasil penelitian menunjukkan bahwa pemberian pupuk NPK sebanyak 100 g plus asam humat sebanyak 20 g /lubang tanam (P5) merupakan perlakuan terbaik dalam memperbaiki K-dd tanah dengan pertambahan tinggi tanaman 110,83 cm, diameter 28,65 mm dan BKA sebesar 10,63 g, terjadi peningkatan pertambahan tinggi tanaman sengon Solomon sebesar 101,21%, diameter sebesar 65,13% dan BKA sebesar 75,12% dibandingkan dengan pemberian 50 g NPK plus 10 g asam humat (P1). Peningkatan dosis NPK dan asam humat dari 50 g NPK Plus 10 g asam humat menjadi 100 g NPK dan 20 g asam humat berpotensi meningkatkan pertumbuhan tanaman sengon Solomon secara nyata.
Flotasi kasiterit dari bijih timah primer tipe skarn asal pulau belitung
Authors:   Program Studi Teknik Metalurgi - Institut Teknologi Bandung, Kamoda Rustam , Sanwani Edy ,   Program Studi Teknik Metalurgi - Institut Teknologi Bandung
Published: December 2023

Indonesia sebagai salah satu produsen timah dunia, selain memiliki cadangan timah dari endapan sekunder juga memiliki cadangan timah dari endapan primer tipe skarn yang terletak di Pulau Belitung. Keterdapatan serta karakteristik mineral kasiterit pada bijih timah primer tipe skarn dapat dikonfirmasi melalui karakterisasi sampel dan berpotensi untuk dipisahkan dari mineral-mineral pengotornya dengan metode flotasi. Ada beberapa faktor yang dapat mempengaruhi pemisahan mineral berharga dari pengotor melalui metode flotasi yaitu asosiasi mineral, skema penggunaan jenis kolektor, kondisi pH, penggunaan depresan dan lain-lain. Hasil karakterisasi sampel menunjukkan bahwa bijih timah primer tipe skarn asal Pulau Belitung mengandung Sn dengan kadar rendah yaitu 0,1615% dalam bentuk mineral kasiterit. Percobaan flotasi yang dilakukan terdiri dari dua skema. Skema pertama yaitu flotasi menggunakan kolektor SHA, SO dan SHA+SO dengan variasi pH 6, 7, 8, dan 9 dan skema kedua yaitu flotasi dengan penggunaan dan tanpa penggunaan depresan pada pH 8 untuk masing-masing jenis kolektor. Perolehan, kadar produk, percent mass pull, nisbah pengayaan, efisiensi pemisahan, dan indeks selektivitas merupakan parameter-parameter yang digunakan untuk menilai performa flotasi. Hasil percobaan menunjukkan bahwa flotasi kasiterit pada variasi pH cenderung menunjukkan performa yang lebih baik pada pH 8. Flotasi dengan variasi jenis kolektor menunjukkan bahwa recovery Sn kolektor SHA < SO < SHA+SO. Jika ditinjau dari segi kadar pada konsentrat, maka kadar Sn SO < SHA+SO < SHA. Percobaan flotasi menggunakan ketiga jenis kolektor pada kondisi penggunaan dan tanpa penggunaan depresan menunjukkan bahwa performa flotasi lebih baik pada kondisi tanpa penggunaan depresan.
Validitas hasil pengujian kadar timbal secara kompleksometri terhadap modifikasi teknik preparasi dalam produk konsentrat timbal sulfida
Authors:   Jurusan Kimia, Fakultas Sains dan Informatika, Universitas Jenderal Achmad Yani, Aprillianto Yesaya , Hardian Arie ,   Jurusan Kimia, Fakultas Sains dan Informatika, Universitas Jenderal Achmad Yani, Herawati  ,   Program Studi Analisis Kimia, Politeknik AKA Bogor, Tirta Ardina Purnama ,   Program Studi Analisis Kimia, Politeknik AKA Bogor
Published: December 2023

Konsentrat timbal sulfida (PbS) berasal dari mineral sulfida yaitu galena. Untuk mendapatkan konsentrat PbS, galena di alam harus diolah terlebih dahulu melalui proses konsentrasi. Kadar timbal (Pb) dalam konsentrat (PbS) ditetapkan secara kompleksometri mengacu kepada ISO 13545:2000 yang dimodifikasi pada tahapan preparasinya. Pada penelitian ini dilakukan validitas hasil pengujian menggunakan beberapa parameter meliputi uji presisi (ripitabilitas dan reprodusibilitas), akurasi (nilai perolehan kembali/%recovery), dan estimasi ketidakpastian hasil pengukuran. Pada penelitian ini digunakan CRM Pb353 sebagai sampel uji yang memiliki rentang kadar Pb antara 58,20-64,33%. Dari hasil penelitian diperoleh nilai rata-rata kadar Pb dalam CRM Pb353 sebesar 61,11% untuk analis A dan 61,00% untuk analis B. Penelitian ini telah memenuhi uji presisi secara ripitabilitas (SBR 0,46% untuk analis A dan SBR 0,39% untuk analis B < 2/3 coefficient variance (CV) Horwitz 1,44%) dan reprodusibilitas (Fhitung 1,34 < Ftabel 4,28 dan P-value 0,37 > taraf nyata 0,05). Akurasi dengan %recovery (analis A 99,06–100,53% dan analis B 99,23–99,98%), serta estimasi ketidakpastian hasil pengukuran (µrelatif 2,27% < 5%). Hasil uji Pb secara kompleksometri dengan modifikasi teknik preparasi dalam produk konsentrat PbS telah memenuhi semua parameter validitas hasil uji.
Indirect contact increases antibody titers in people exposed to Anthrax
Authors: Dhani Redhono Harioputro  , Nurhasan Agung Prabowo  , Fatna Andika Wati  , Indrayana Sunarso  , Arie Kusumawardani  , Arsyi Dasa Ramadhan
Published: December 2023

Introduction: Anthrax is a zoonotic infection that often becomes epidemic in endemic areas. It can be transmitted to humans through contact with infected animals. The most common manifestation is the appearance of eschar on the skin. Early detection as a screening for anthrax exposure can use serum anti PA Ig G antibody tests. This study aims to analyze the contact history and appearance of eschar on the skin against serum antibodies of people exposed to anthrax. Material and Methods: This analytical observational study used a cross-sectional design. It assessed the relationship of contact history and eschar to Ig G anti PA serum antibodies. To determine the significance of the association between the factors studied, an analysis using SPSS version 22.0 for windows was used, with a 95% confidence level. Result and Discussion: A total of 35 respondents who were exposed to anthrax in Gunungkidul District, Yogyakarta. Most of the respondents were women aged between 40 - 60 years and worked as farmers. It showed that Anti-PA Ig G antibodies are 40% positive, with 17% having a history of direct contact showing positive serology and 20% having eschar on skin with positive antibodies. It indicates a significant association between contact history and antibodies with p <0.05, but there is no significant difference in the appearance of eschar on the skin. Conclusion: There is a relationship between the results of serology with a history of contact with infected animals, so it’s very important information in efforts to prevent and screen anthrax in endemic areas.
SELEKSI TEKNOLOGI PENANGKAPAN IKAN PELAGIS KECIL YANG BERWAWASAN LINGKUNGAN DI PERAIRAN KOTA AMBON
Authors: NANLOHY ALBERTH Ch , Hehanussa Kedswin G. , Tawari Ruslan H. S.
Published: December 2023

Penelitian ini dilakukan pada bulan Mei hingga Juli 2021 melalui survei pada nelayan perikanan pelagis kecil di kota Ambon. Hasil penelitian menunjukkan bahwa berdasarkan pendapat nelayan teknologi penangkapan ikan skala kecil di wilayah Kota Ambon tergolong sangat ramah lingkungan dan cukup berkelanjutan. Dari tujuh (7) kriteria teknologi penangkapan ikan ramah lingkungan, kriteria selektivitas skornya sangat rendah yaitu 59,57%, sedangkan dari lima (5) kriteria teknologi penangkapan berkelanjutan, kriteria investasinya rendah dengan skor 65,50%. . Hasil analisis AHP menunjukkan terdapat tiga alternatif pilihan prioritas utama teknologi penangkapan ikan ramah lingkungan, yaitu selektivitas tinggi dengan skor 0,343, kualitas tangkapan tinggi 0,238, dan penerimaan sosial 0,135. Hasil analisis ini memiliki rasio inkonsistensi sebesar 0,05 (<0,1). Dua prioritas dalam pilihan teknologi berkelanjutan adalah teknologi tangkap yang menerapkan prinsip ramah lingkungan (0,333), dan aspek hukum (0,333). Rasio inkonsistensi dari analisis ini adalah 0,000 (<0,1). Secara keseluruhan, prioritas teknologi penangkapan ikan pelagis kecil yang ramah lingkungan berkelanjutan di Kota Ambon adalah pancing ulur 0,445, jaring insang hanyut 0,247, purse seine 0,171, bagan 0,089, dan jaring pantai 0,049.
Pemetaan Sebaran Rajungan yang ditangkap menggunakan Bubu Di Perairan Pesisir Barat Lampung
Authors: Putri Aprilia Syah , Nulzapril Mulkan , Tirtana Denta
Published: December 2023

The Pesisir Barat  of Lampung is one of the locations that has great opportunities for capture fisheries activities in Lampung. The abundant potential of these waters means that people in Pesisir Barat Regency earn income from fishing along these waters. Fishermen still catch fish using traditional tools using small boats (jukung). The vast waters with muddy and sandy water substrates make fishermen use fishing gear that is cheap, easy to operate and environmentally friendly. The trap fishing gear is a passive fishing gear operated by fishermen whose main catch is crab. The aim of this research is to map the distribution of crab catches using trap fishing gear. This research was carried out from June 2023 to September 2023. The research location was carried out in West Coastal Waters. Mapping crab fishing areas begins with identifying crab fishing areas. Identification of crab fishing areas is carried out using a survey method on three indicators, namely the location of fishing operations, catch results and environmental conditions. These results show that the distribution of crabs using trap fishing gear on the West Coast is at the Fishing Ground in Kuala Stabas Waters, Bengkunat Bay Waters and Labuhan Tapokan Waters with the number of crabs on LED trap fishing gear being 250 and the number of crabs on trap fishing gear without LEDs being 250. 119 Tails
Hasil Tangkapan Mini Pure Seine Di Perairan Teluk Ambon Luar Dan Selatan Pulau Ambon
Authors: Paillin Jacobus Bunga , Tuapetel Friesland , Siahainenia Stany R.
Published: December 2023

A purse seine is an active fishing gear used by fishermen in Ambon Island to catch small pelagic fish that gather in high abundance, although the information is still limited. The purpose of this research is to determine the species composition and size distribution of the catch from the mini purse seine in the waters of Outer Ambon Bay (TAL) and South Ambon Island (SPA). From the results of this research, there are four types in TAL waters and two types in SPA. In TAL, the captured fish species were Decapterus sp (Scad), Selar sp (Selar), Sardinella sp (Sardine), and Rastreliger sp (Mackerel). Sardine had the highest catch percentage at 28.41%, followed by scad (25.28%), mackerel (23.27%), and selar (23.04%). In the SPA waters, only scad (Decapterus sp) and selar (Selar sp) were found, with catch percentages of 57.83% and 42.17%, respectively. The average size distribution of scad caught with the mini purse seine in TAL waters was 16.62 cm, selar (17.22 cm), sardine (13.36 cm), and mackerel (17.34 cm). In SPA waters, the average size distribution of scad was 17.59 cm, and selar (16.63 cm).
Tindak Pidana Penyerobotan Tanah
Authors: Marjan Muh Efendi , Toule Elsa Rina Maya , Latupeirissa Julianus Edwin
Published: December 2023

This study aims to find out: what are the material elements of land grabbing that can be punished, and what are the judges'juridical considerations of criminal acts of land grabbing. Normative Juridical Research Research. Legal research is conducted to find solutions to legal issues that arise, primary data and secondary data are analyzed descriptively. This research is directed to be able to study and analyze whether land grabbing can be criminalized or not, analyze and explain the application of criminal law to criminal acts of land grabbing. The results showed that the judge who examined and tried the case with register number 225/Pid.B/2015/PN.Kla stated that the defendant was proven to have committed the act as charged by the first and second charges, but the panel of judges decided to release the defendant from all charges. law because the actions committed by the defendant are not a crime (onslag van recht vervolging). The Judge considered that the indictment submitted by the Public Prosecutor at the trial was in accordance with the actions of the defendant, but based on the results of the trial facts the Panel of Judges who examined and tried the case with register number 225/Pid.B/2015/PN.Kla did not find any action crime from the defendant's actions during the evidentiary process.
Kesadaran Hukum Masyarakat Pesisir Terhadap Pengelolaan Lingkungan di Desa Bukit Samang Kecamatan Sendana
Authors: Baharuddin Wahdaniah , Dyastuti Risqi Mumpuni
Published: December 2023

Environmental problems involve all components of the country and all elements of Indonesian society and even become rights and obligations, as regulated in Law Number 32 of 2009 concerning Environmental Protection and Management. Community participation, especially houses living in coastal areas, is very necessary in preparing plans for environmental management in the region. However, based on observations made by the author, the environmental conditions in the coastal area of ​​Bukit Samang, Sendana District, Majene Regency are included in the category of areas that are less clean. Traders who sell young coconuts along the beach still throw rubbish carelessly, potentially damaging the environment and polluting the coastal area. This research aims to determine the legal awareness of coastal communities regarding environmental management in Bukit Samang Village, Sendana District. This research is normative legal research. The approach is taken by reviewing literature or literature studies and directly observing conditions in the field related to the problem to be researched. The sources of legal materials used are primary and secondary legal materials which are then interpreted and analyzed qualitatively. Results of the research, this shows that The coastal area in Bukit Samang, Sendana District, Majene Regency is included in the category of areas that are less clean. This is characterized by a lack of legal awareness among the public or traders selling young coconuts along the coast who still throw rubbish carelessly which has the potential to damage the environment and pollute the coastal area. This is due to the government's unequal attention to areas far from the center of government, such as equal distribution of rubbish bins, in addition to providing sanctions that are only administrative in nature and do not have a deterrent effect on violators of space use.
ANALISIS KANDUNGAN LOGAM PADA LIPSTIK YANG BEREDAR DI KOTA BATUSANGKAR
Authors: Khaira Kuntum
Published: December 2023

Research has been conducted to analyze the content of heavy metals (Pb, Cd, Mn) in lipstick circulating in Batusangkar Market. Samples are lipsticks that are registered and not registered with BPOM with various brands, colors and prices sold in the batusangkar market and totaling 10 samples. The sample was destroyed using a mixture of nitric acid and hydrogen peroxide. Furthermore, the content of Pb, Cd and Mn was measured using Atomic Absorption Spectrophotometry (AAS). Based on the results of the analysis, the Pb content in the sample ranged from -6.875 mg/kg to 2.0305 mg/kg, Cd content 0.18 mg/kg to 0.52 mg/kmg/kg, Mn content -4.60 mg/kg up to 149.59 mg/kg. Lead was found in 4 out of 10 lipstick samples, heavy metal Cd was found in all lipstick samples and manganese was found in 8 out of 10 lipstick samples. Based on these results, it can be concluded that the heavy metal content in the electrical sample is below the specified limit so that it meets the requirements of the Regulation of the Head of the POM No. 17 of 2014 concerning requirements for microbial and heavy metal contamination in cosmetics.
VIDEO ANIMASI STOP MOTION SEBAGAI MEDIA PEMBELAJARAN OFFLINE DALAM MODEL PEMBELAJARAN RECIPROCAL TEACHING PADA MATERI IKATAN KIMIA UNTUK MENINGKATKAN HASIL BELAJAR SISWA DI SMA NEGERI 4 AMBON
Authors: Mathelumual Mince , Manoppo Yance , Manuhutu Julita B
Published: December 2023

This study aims to improve the learning outcomes of students using the video of the stop motion animation as an offiler learning media in the reciprocal teaching learning model on chemical bond material in SMA Negeri 4 Ambon. This research is quantitative research. The sample in this study is class X IPA-2 with the number of students as many as 30 people. This study lasted for 3 meetings on chemical ties, technique of data collection in this study included test techniques, LKS, observation using cognitive aspect sheets, observation sheet of affective aspects (attitude) and observation sheet of psychomotor aspects (skills). The Pretest is given treatment to measure students’  initial understanding while, the posttest is given to measure students’ final understanding after being given treatment. From the results of data analysis obtained showing the learning outcomes of class X IPA-2 students have achieved minimum completeness criteria (KKM), with the final value obtained is the excellent qualification of 1 student (3.3%), qualification of both 4 students (13.3%), qualification is quite 23 students (76.7%) and qualifying 2 less than 6 students (6.7%). The results of research data analysis through N-Gain calculations showed an increase in student learning outcomes obtained by 7 students (23.3%) in high categories and 23 students (76.7%) in medium category, for the average results of N-Gain scores all students obtained by 0.68 which are in medium category. From the results obtained all students meet the assessment criteria despite being in different qualifications. The results showed an increase in the use of the learning method of animation video stop motion can improve student learning outcomes.
UTILIZATION OF THE LABORATORY AND APPLICATION OF SCIENCE PROCESS SKILLS TO INCREASE STUDENT LEARNING OUTCOMES ON THE CONCEPTS OF ELECTROLYTE AND NON-ELECTROLYTE SOLUTIONS CLASS X SMA
Authors: Palisoa Napsin , Lumaela Miftha Khuljannah
Published: December 2023

The purpose of this study was to determine the application of science process skills to improving student learning outcomes on the concept of electrolyte and nonelectrolyte solutions for class X SMA Negeri 26 Central Maluku and to determine student responses to learning by using the laboratory. The type of research used is descriptive quantitative research design with one group pretest-posttest design. The research sample was 25 students of class X MIA-1 SMA Negeri 26 Maluku Tengah. Data was collected using test instruments and non-test instruments. The results showed that all students (100%) had reached the KKM. To find out the increase in student learning outcomes, it is calculated using the normalized gain formula (n-gain) where 8 students (32%) are in high qualification and 17 students (68%) are in medium qualification, with an average value of n-gain of 0.7 with a percentage of 70%. For student responses to learning by utilizing laboratories in the form of practicum activities, 17 students (68%) were in the strongly agree qualification, 8 students (32%) were in the agree qualification. Thus the application of science process skills and the use of laboratories has a positive effect on improving learning outcomes.
CAN THE ETHNOSCIENCE-BASED INQUIRY LEARNING MODEL IMPROVE STUDENTS’ SCIENCE PROCESS SKILLS?
Authors: Saija Maryone , Tahya Dominggus
Published: December 2023

This study aims to determine the increase in students' science process skills by applying an ethnoscience-based inquiry learning model to colloid system material from a public high school in West Seram. The type of research used is descriptive-quantitative. The sample used in this research was 30 students in class XI IPA. Data collection techniques in this study were test techniques in the form of a pre-test and a post-test. The results showed that the application of the ethnoscience-based inquiry learning model succeeded in improving students' science process skills, with an increased score calculated based on the results: the average value before learning was 26.29 and increased after learning with an average value of 80.50. The average value of N-gain is 0.74, indicating an increase in students' science process skills in the high category. Encouraging chemistry teachers to explore other ethnosciences to teach colloid systems is necessary.
PRODUCTION OF ACTIVATED CARBON OF PALMYRA PALM FRUIT SHELL (Borassus flabellifer Linn.) FROM KISAR ISLAND, SOUTHWEST MALUKU REGENCY FOR ADSORPTION OF METHYL RED DYE
Authors: Maromon Ingrid Natasya Tritama , Utubira Yeslia , Untailawan Romelos
Published: December 2023

Palmyra palm is a species of palmae that grows a lot on Kisar Island where all parts of the plant can be utilized. However, the palmyra palm fruit shell has not been used and that is only thrown away. In this study, palmyra palm fruit shell were made as activated carbon and were characterized using XRD to determine the crystallinity properties of the palmyra palm fruit shell activated carbon and adsorption test was carried out to determine the capacity and efficiency of activated carbon adsorption to methyl red dye. The production of palmyra palm fruit shell activated carbon is carried out through the carbonization stage at 300°C for 1 hour, and followed by chemical activation using H3PO4 10% solution for 24 hours. The results of the analysis using XRD showed that the activated carbon of the palmyra palm fruit shell formed peaks with the highest intensity at diffraction angles of 2θ = 26.5241° and 27.6274° with d-spacing values ​​(Å) = 3.36059 and 3.22884, which are characteristic peaks of carbon and are amorphous. The adsorption of methyl red 20 ppm use batch method, with various contact times of 5, 10, 15, 20, 25, and 30 minutes. The results of showed that on 15 minutes was the optimal time, with 0.25 gram mass of the adsorbent and the adsorption capacity and adsorption efficiency was 0.87 mg/g and 44.3%, respectively.
Theorizing Ideological Steering
Authors: Nylén Erkki-Jussi Antero
Published: December 2023

Erkki-Jussi Nylénin väitöskirja ”Theorizing Ideological Steering: The journey of the circular economy” tarkastettiin Tampereen yliopiston johtamisen ja talouden tiedekunnassa perjantaina 22.9.2023. Vastaväittäjänä toimi apulaisprofessori Hayley Stevenson Torcuato Di Tellan (Argentiina) yliopistosta. Kustoksena toimii professori Pekka Jokinen Tampereen yliopiston johtamisen ja talouden tiedekunnasta. Tämä teksti perustuu Nylénin väitöstilaisuuden lektioon. Väitöskirjaan voi tutustua osoitteessa: https://urn.fi/URN:ISBN:978-952-03-2994-5.
Vastaväittäjä Hayley Stevensonin kirjoittama väitösikkuna-teksti Erkki-Jussi Nylénin väitöskirjasta on julkaistu samassa numerossa: https://doi.org/10.30663/ay.141247.