bluuebunny/crossref_metadata_2025_split huggingface dataset:
Strategi PQ4R Strategi PQ4R Terintegrasi Model Team Quiz Berbasis E-Learning dalam Memberdayakan Keterampilan Berpikir Kritis dan Aktivitas Siswa
Authors: Asy'ari Asy'ari , Saefi Muhammad , Cholid Fahmi 
Published: September 2023

This study aims to provide light on various aspects of education, including student activities and critical thinking, as well as the implementation of PQ4R learning methodologies. True Experiment study is conducted using a quantitative research methodology. A control group with a pretest-posttest design was used in the study. Probability sampling is a technique used in sampling that allows for population analysis. Class X SMA Muhammadiyah 10 Surabaya was the random sequence used to choose the sample using the lottery method. Written tests and observations served as the data collection methods. Descriptive and statistical T-tests were used in data analysis. The study's findings indicate that there are two categories for how well learning is implemented: fairly good and extremely good. This study demonstrated that learning strategies had an impact on students' critical thinking skills by using statistical tests with a significant level of 0.05 and a significant value of 0.00 to show that Ha was accepted and Ho was rejected. According to data on student learning activities, the first meeting scored an average of 81.8, which is in the "very good" category. Therefore 66.9 is generally considered to be "good." The second meeting qualified as "very good" with an average score of 92.5. According to the research, the implementation of learning management utilizing the PQ4R technique along with the Quiz Team model on critical thinking abilities and student activities at Meeting 1 and Meeting 2 fell into the Pretty Good and Very Good categories, respectively.
Keywords: Student Activity, Critical Thinking Ability, PQ4R Strategy, Team Quiz
Isolasi dan Identifikasi Bakteri Pendegradasi Limbah Cair Minyak Kelapa Sawit (Elaeis guineensis Jacq)
Authors: Aida Hasni , Manalu Kartika 
Published: September 2023

The purpose of this study was to determine the presence of degrading bacteria in the Simangalam river containing palm oil wastewater in Gunung Melayu Village, North Labuhanbatu Regency. This research was conducted using a survey method on the presence of bacteria and the characteristics of bacterial isolates degrading palm oil industrial wastewater and the data obtained were analyzed descriptively. The results showed that only HB1ST1 and HB2ST2 were circular, while HB3ST2, HB4ST2, HB5ST2, and H62ST2 were irregular. After gram staining, three gram-positive bacterial isolates (HB1ST1, HB4ST2, and HB6ST2) and three gram-negative bacterial isolates (HB2ST2, HB3ST2, and HB5ST2) were obtained. The HB1ST1 isolate motility test showed negative results, while the other five isolates (HB2ST2, HB3ST2, HB4ST2, HB5ST2, and HB6ST2) showed positive results. The conclusion of this study is that there are 6 bacterial isolates that are able to degrade oil palm liquid waste in the Simangalam River from 2 samples of oil palm liquid waste.

Keywords: Descriptive, Isolate, Palm Oil Effluent
Studi Kualitas Sungai Ditinjau dari Kelimpahan Fitoplankton
Authors: Fitria Isnaini , Harahap Arman 
Published: September 2023

The purpose of this investigation is to identify the kinds of phytoplankton that can be found in the Aek Buru River's waters and to gauge the quality of the river's water. Purposive sampling, a sampling approach that considers specific data sources, is the sampling methodology employed. At surface water depths of 0 to 1.5 meters, water samples were taken. According to the study's findings, there are 4 classes and 15 different types of phytoplankton in the diversity of species collected. The conclusion of this study is the diversity of phytoplankton obtained (Chlorophyceae, Bacillariophyceae, Cyanophyceae and Chrysophyceae). The quality of river water is classified as moderately polluted waters.
Key words: Phytoplankton, Water Quality, Aek Buru River
Analisis Kualitas Air di Sungai Marbau
Authors: Pohan Nur Hasanah , Harahap Arman 
Published: September 2023

This study aims to analyze the quality of river water and the water quality status of the Marbau watershed in North Labuhanbatu Regency based on water quality criteria and to formulate a pollution control strategy that needs to be implemented. The method used is a quantitative descriptive method by analyzing the status of river water quality based on the pollution index. The results showed that the P1 value of Marbau river water ranged from 0.94 to 1.82. The recommended pollution control strategies are: 1) maintaining river protection zones involving environmental cadres and green communities in monitoring; 2) monitoring and controlling water pollution along the river; 3) improve river water quality monitoring; 5) supervision of the discharge of waste water into rivers; 4) granting permits for disposal of wastewater (IPLC) into rivers must pay attention to the condition of the capacity to accommodate river pollution loads and enforce environmental law against business actors who violate established environmental quality standards. In conclusion, the quality of the Marbau river has decreased with the water quality status being slightly polluted. The recommendations for water pollution control strategies that need to be implemented are progressive strategies.
Keywords: Water Quality, North Labuhanbatu, Marbau
Aktivitas Antioksidan dan Antibakteri Ekstrak Etanol Adas Pagar (Eupatorium Capillifolium (Lam.) Small) terhadap Staphylococcus Aureus dan Escherichia Coli
Authors: Palimbunga Feblicya , Aditiyarini Dwi , Prakasita Vinsa Cantya 
Published: September 2023

The purpose of the study was to investigate the presence of second-order metabolites and the antibacterial and antifungal activities against S. aureus and E. coli in an experimental manner. This study is being conducted using an experimental method. Metabolit is quickly identified by scrining fitokimia. Antioxidant activity was measured using the DPPH method. Antibacterial activity is carried out using the cakram diffusion method. Ekstraksi was carried out by the 96% etanol-maseration process. The results show that the extracted etanol adas pagar contains flavonoid, alkaloid, tanin, saponin, and terpenoid content. Ekstrak etanol adas pagar has strong anti-oxidant activity with an IC50 of 80,56 ppm. Due to its antibacterial potential, ekstrak etanol adas pagar can kill gram-positive Staphylococcus aureus as well as gram-negative Escherichia coli bacteria when applied in concentrations of 100% and 50%, respectively. The main finding of this study is that ekstrak etanol adas pagar can be used as a safe antibacterial and antifungal against the growth of S. aureus and E. coli.
Keywords: Adas Pagar, Antibacterial, Antioxidant, Extraction, Metabolite
Karakteristik Buah dan Biji Lontar (Borassus Flabelifer L.)
Authors: Yostianti Tnunay Ite Morina , Hanas Dicky Frengky , Mata Meri Helsiana 
Published: September 2023

The purpose of this study was to provide the data about character of lontar fruit and seeds in Kefamenanu City, North Central Timor Regency. This research was conducted from August to September 2022 using exploration and sample collection methods than contnued with characterization of fruit and seed. The results showed that the lontar fruit and seed in Kefamenanu can be characterized using the characteristics of the diameter of the base of the petals, the diameter of the tip of the petals, the length of the inner petals, the length of the outer petals, the width of the inner petals, the width of the outer petals, the number of petals, color. petals, edges of petals, petal shape, weight of petals, weight of fruit with petals, weight of fruit without petals, fruit diameter, fruit length, fruit circumference, fruit skin color, fruit shape, fruit skin surface, fruit tip and base surface, base color and fruit tip, seed weight, seed length, seed width, seed diameter, endosperm diameter, seed coat thickness, endosperm length, and endoperm color. In conclusion, there are 31 qualitative and quantitative characters that have been used to characterize lontar fruit and seed in Kefamenanu City.
Keywords: Fruit and Seed Characters, Lontar
Studi Spesies Gastropoda di Perairan Sungai Berumun
Authors: Nurlina Nurlina , Harahap Arman 
Published: September 2023

The aim of the Gastropod species study is to determine the diversity and density of Gastropods and the environmental conditions that influence the development of gastropods in berumun rivers. The research method used in this study of gastropod species is to provide descriptive information about the diversity of gastropod species in the Berumun river, Panai Hulu sub-district, Labuhan Batu district. The results of temperature measurements at the observation station in Sungai Berumun, Panai Hulu District, Labuhan Batu Regency, showed that the highest pH was at the third station, 7.40, while the lowest pH was at the first station, namely 7.1. From the results of the study, it was concluded that there are 15 species of macrozoobenthos found in the Barumun River which belong to 5 families, namely: 1. Potamididae, Cerithidae obtusa, Cerithidae alata, Cerithidae cingulata, Telescopium mauritsi, Telescopium telescopium, 2. Littorinidae, Littoraria melanostoma, Littoraria conica, Littoraria scabra, 3. Neritidae, Nerita balteata, Neritina violacea, Neritina cornucopia, 4. Muricidae, Stramonita gradata, Chicoreus capucinus, 5. Ellobiidae, Cassidula aurisfelis, Ellobium aurisjudae.
Keywords: Gastropods, Diversity
Etnozoologi Pada Masyarakat Sumba
Authors: Nikmatila Alda Rizkia , Kurnia Insan , Utari Wulandari Dwi 
Published: September 2023

Ethnozoology is the study of the relationship between humans and animals. Ethnozoological studies are closely related to culture and local knowledge and their interactions with the surrounding environment. The Sumba people with the marapu belief are known to have close relationships with various types of animals. This study aims to identify the types of animals used by the people of three villages in Sumba. The results showed that 23 species of animals were identified as part of the ethnozoology of the three villages. Species of animals related to ethnozoology can refer to several species scientifically. The forms of utilization by the community are as part of traditional and religious rituals (five species), traditional medicine (five species), consumption (six species), artistic values ​​(seven species), and mystical values ​​and omens (seven species). Ethnozology in Sumba society is closely related to Marapu beliefs.
Keywords: Etnozoology, Marapu, traditional rituals, Sumba
Identifikasi dan Perbandingan Komposisi Kepadatan Mesodebris pada Pantai Wisata
Authors: Nurhayati Fadhila , Ritonga Irwan Ramadhan , Eryati Ristiana 
Published: September 2023

This study aimed to determine the type, composition and density of mesodebris based on seasonal differences (periods I and II). Sampling was conducted using the purposive sampling method. There were 5 lanes of transects randomised to determine the sub-transect box. Mesodebris samples were taken by excavating surface sediments (± 3 cm) and filtered with 0.5 cm x 0.5 cm size at Lamaru beach, Balikpapan City. All samples were collected, grouped and counted to determine the type, number, weight and density of mesodebris. The analysis results showed that 6 types of mesodebris were found in the study site such as plastic, plastic foam, glass, cloth, wood and rubber. The highest mesodebris composition for the number category was plastic (80%) in period II, while the highest weight composition was found in period I at 51%. The density of mesodebris with the most number category was found in period II (1.64 amount/m2). From the results of the study it can be concluded that there was no significant difference in the mesodebris density between periods I and II at Lamaru Tourism Beach, Balikpapan City. The main sources of mesodebris in the study area come from tourist activities, local residents' activities on land, and water runoff from the Manggar River.

Keywords: Balikpapan, Density, Mesodebris, Season
Pemanfaatan Sistem Tanam Tumpangsari terhadap Pertumbuhan Vegetatif Dua Kultivar Tanaman Kedelai Hitam (Gylcine Max L)
Authors: Hasibuan Gurbas Ida Rohima , Rahmadina Rahmadina 
Published: September 2023

This study aims to determine the use of spacing and cultivars for the growth of black soybean plants with an intercropping system (Gylcine max L.). This research method used a factorial randomized block design (RBD) with 2 factorials and 4 replications. Factor I (K) cultivars were K1 = detam 2 soybean cultivar and K2 = detam 4 soybean cultivar. The interval (J) consisted of three levels: J1 = 10 x 20 cm, J2 = 15 x 20 cm, J3 = 20 x 20 cm . The observed variables were plant height, leaf area index, root nodules, relative growth rate (LPR), chlorophyll content, and net assimilation rate (LAB). The results showed that treatment with K2 (detam 4) had a significant effect on plant height 14.28 HST, relative growth rate, chlorophyll a, b and total. The treatment of J1 spacing (10 x 20 cm) had a significant effect on 14 DAP height and leaf area index. Based on the research, it can be concluded that the intercropping system and black soybean cultivar had a significant effect on plant height, relative growth rate, chlorophyll a, b, total, and leaf area index.
Keywords: Spacing, Black Soybean, Cultivars, Growth, Intercropping
Biodiversitas Tumbuhan Herba Berdasarkan Variasi Ketinggian
Authors: Nasution Lailatul Hasanah , Hutasuhut Melfa Aisyah , Idami Zahratul 
Published: September 2023

The purpose of this study was to determine the types, diversity, and distribution patterns of herbaceous plants based on variations in height. The method used is the survey method with the squared plot technique by purposive sampling at two heights of 1,009 masl and 1,144 masl with a plot size of 5 x 5 meters. The results showed that the herbaceous plants found at an altitude of 1,009 meters above sea level, namely 22 species with 14 families, the most species at an altitude of 1,009 meters above sea level were Impatiens sp., while the herbaceous plants found at an altitude of 1,144 meters above sea level, namely 15 species with 9 families, the most species at an altitude of 1,144 meters above sea level, namely Selaginella subalpine Aldrew. The diversity of herbaceous plants seen from the IVI value. The IVI value obtained at an altitude of 1,009 masl is found in Taenitis blechnoides Sw. of 36.268. At an altitude of 1,144 masl there is the highest IVI value, namely Selaginella subalpina Aldrew. of 48,400. The diversity index at an altitude of 1,009 masl was 2.313 while the diversity index at an altitude of 1,144 masl was 2,200. From the diversity index data for herbaceous plants, the diversity index was moderate. The distribution pattern of plants at an altitude of 1,009 masl is 2.66 and the pattern of distribution of herbaceous plants at an altitude of 1,114 masl is 2.89. The conclusion of the research is that the diversity of herbaceous plants in Batang Gadis Resort 6 National Park is classified as moderate, while the distribution of herbaceous plants found in Batang Gadis Resort 6 National Park is in groups.

Keywords: Biodiversity, Herbs, Distribution Pattern, Altitude
Isolasi dan Identifikasi Bakteri Clostridium Botulinum pada Minyak Jelantah
Authors: Hanipah Asti , Manalu Kartika , Nasution Rizki Amelia 
Published: September 2023

The aims of this study were to determine whether Clostridium botulinum bacteria were present in used cooking oil, and to look at the characteristics of Clostridium botulinum bacteria in used cooking oil. In this study, isolation of bacteria from used cooking oil using blood agar media, identification of bacteria using gram staining and biochemical tests such as gelatin test, triple sugar iron agar (TSIA) test, simon citrate test, and motility test were carried out. The results of the study obtained 2 out of 3 samples containing Clostridium botulinum bacteria. These bacteria are more common in used cooking oil, which has a more blackish brown color, lots of crumbs left over from food, and temperatures around 30-55℃. In conclusion, there is Clostridium botulinum bacteria found in used cooking oil. Clostridium botulinum colonies are grey, alpha hemolytic, circular to irregular in shape with scalloped edges or rhizoids, and flat to raised surfaces.
Keywords: Clostridium botulinum, Isolation, Identification, Cooking Oil
Keragaman Lumut Kerak (Lichenes) di Resort 6 Taman Nasional Batang Gadis (TNBG) Sumatera Utara
Authors: Nuryani Eka , Hutasuhut Melfa Aisyah , Idami Zahratul 
Published: September 2023

The purpose of this study was to determine the types of lichens, thallus types, and diversity index of lichens found in Resort 6 of Batang Gadis National Park. The method used in this study is an exploratory survey method with a squared plot technique using purposive sampling. The results of the study, there are 25 types of lichens from 13 families. The most commonly found family is the Parmeliaceae family and the most commonly found species is Lepraria sp. There are three types of thallus found in lichens, namely crustose, foliose, and fruticose types. There are 14 types of crustose-shaped lichens, 10 types of foliose shaped like leaves, and 1 type of fruticose shaped like dangling ribbons. The lichenes diversity index value is 2.96. From the results of the study it can be concluded that the diversity of lichens shows moderate diversity with a moderate distribution of individuals of each type. This also shows that the Batang Girls Resort 6 National Park area still has good air quality.

Keywords: Diversity, Lichens (lichenes), Batang Gadis National Park
Analisis Kelimpahan Bakteri Coliform pada Air Sumur Warga di Kelurahan Tanjung Selamat Kecamatan Medan Tuntungan
Authors: Septiyah Almadina , Manalu Kartika , Nasution Rizki Amelia 
Published: September 2023

This study aims to determine whether there are Coliform bacteria contained in residents' well water in Tanjung Selamat Village, Medan Tuntungan District. In this study, physical tests were carried out on samples using sensory devices, chemical tests using pH paper, and bacterial identification using the MPN test which included a prediction test using Lactose Borth media, a confirmation test using Brilliant Green Lactose Borth (BGLB) media, and a certainty test. using eosin methylene blue (EMB) media. The results of the physical test obtained 1 sample and the chemical test obtained 3 samples that met the requirements for clean water health. Meanwhile, from the MPN test, the MPN value was obtained for sample 1: 43/100 ml of water, sample 2: >2400/100 ml of water, sample 3: 60.06/100 ml of water. The difference in the number of MPN values found in the samples indicates that the samples have different levels of contamination and pollution levels. Based on the research that has been done, it can be concluded that of the three water samples taken from residents' well water in Tanjung Selamat Village, Medan District, Tuntungan was positive for Coliform bacteria.
Keywords: Well water, Coliform bacteria, MPN test
Perubahan Fıtokımıa Kecambah Kembang Kol (Brassica oleraceae L., var. botrytis) sebagai Respons terhadap Cahaya Biru
Authors: Salim Mohamad Agus 
Published: September 2023

The aim of this study was to observe the use of blue light on phytochemical changes during cauliflower (Brassica oleraceae L., var. botrytis) germination and the correlation between the parameters measured. The treatment was in the form of giving blue light and dark conditions as a control. Measurement of phytochemical compounds including ascorbic acid, glucosinolates, isothiocyanates and myrosinase enzymes was carried out every day for 5 days of germination. This research method is experimental research. Data obtained from measurements for all parameters are presented in the form of mean ± standard error. Furthermore, all data were analyzed using analysis of variance (ANOVA). To determine differences between groups, Duncan's multiple range test (DMRT) was used at the 95% confidence level. All data analysis used SPSS software version 24.0 (IBM, Chicago, IL, USA). In addition, the measurement of the correlation between parameters is carried out using the Pearson rank correlation coefficient. The results showed that blue light treatment significantly increased all measured phytochemical parameters. A significant positive correlation occurred between myrosinase activity and isothiocyanate formation. The glucosinolate content of cauliflower sprouts remained high during observations in the blue light treatment compared to the dark conditions. Blue light induces isothiocyanate formation and higher myrosinase activity when compared to dark conditions. The conclusion from this study is that blue light significantly increases the phytochemical changes of cauliflower sprouts.

Keywords: Ascorbic Acid, Glucosinolate, Isothiocyanate, Correlation, Myrosinase
Studi Efek Pemberian Probiotik Multistrain terhadap Parameter Klinis Diabetes Melitus: Review Sistematik
Authors: Ningrum Mefri Widya , Kok Tjie 
Published: September 2023

ABSTRACT
The purpose of this study was to analyze the study of the effects of multistrain probiotics on clinical parameters in diabetes mellitus to determine the condition of blood glucose and HbA1c so as to trigger inflammation. The research method uses a systematic review with the online scientific database Google Scholar, PubMed, Researchgate according to the inclusion and exclusion criteria. The results of this systematic review showed that 13 articles that had been extracted discussed the effects of giving probiotics as an alternative secondary treatment for complications of diabetes mellitus and 5 articles that were in accordance with the research objectives. From the results of a systematic review, it was concluded that probiotic treatment can reduce the level of resistance to HbA1c, GDP, GD2P and inflammatory mediator parts of diabetes mellitus.

Keywords: Diabetes mellitus, HbA1c, Probiotics, Proinflammation
Pengembangan E-Booklet Lemea Lebong sebagai Media Pembelajaran Materi Bioteknologi untuk Siswa SMP
Authors: Marcellina Roleka Julia , Karyadi Bhakti , Parlindungan Deni , Uliyandari Mellyta , Sutarno M. 
Published: September 2023

This study aims to develop an e-booklet, namely the Lemea Lebong electronic booklet as a learning medium for biotechnology material. This research method is research and development. Data collection techniques are questionnaires, interview guides and observation. The research instruments were observation sheets, needs analysis questionnaire sheets, teacher interview guides, student readability test questionnaires and expert validation sheets. Data analysis techniques are descriptive and quantitative analysis. The results showed that the Lemea Lebong e-booklet as a learning media for biotechnology materials for students was very feasible to use based on the results of the validation test. Student responses to the readability of the Lemea Lebong e-booklet as a medium for learning biotechnology material for students showed a very good category. In conclusion, the Lemea Lebong e-booklet as a learning medium for biotechnology material is suitable for science learning on biotechnology material.
Keywords: E-booklet, Lebong, Lemea