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Habitat Characteristics of Long-Tailed Macaque (Macaca fascicularis Raffles, 1821) in Kucur Resort at Alas Purwo National Park 阿拉斯普沃国家公园库库尔度假村长尾猕猴(Macaca fascicularis Raffles, 1821)栖息地特征

BERKALA SAINSTEK Pub Date : 2022-06-28 DOI: 10.19184/bst.v10i2.31613

A. Siddiq, Dewi Erna Wati, Hari Sulistiyowati, Retno Wimbaningrum, R. Setiawan, Dudun Supriadi

{"title":"Habitat Characteristics of Long-Tailed Macaque (Macaca fascicularis Raffles, 1821) in Kucur Resort at Alas Purwo National Park","authors":"A. Siddiq, Dewi Erna Wati, Hari Sulistiyowati, Retno Wimbaningrum, R. Setiawan, Dudun Supriadi","doi":"10.19184/bst.v10i2.31613","DOIUrl":"https://doi.org/10.19184/bst.v10i2.31613","url":null,"abstract":"The Long-Tailed Macaque (LTM) (Macaca fascicularis Raffles, 1821) is a member of the Cercopithecidae which is included in the Vulnerable status. Information on the habitat characteristics of these species is needed to support in-situ conservation efforts. This study aims to determine the habitat characteristics of LTM in Kucur Resort at Alas Purwo National Park (APNP) based on the forest strata occupied by the LTM, Normalizes Difference Vegetation Index (NDVI), and river distance. The research procedure begins with a preliminary survey to determine the six lines of observation. The data used are primary data (LTM encounter points, forest strata they occupy, and data on tree species where they meet) and secondary data (NDVI variables and river distance). Both data were analyzed using a Geographic Information System (GIS) approach. The results showed that the LTM at Resort Kucur TNAP was found in four different groups. The results of data analysis show that the habitat characteristics of the LTM in Kucur Resort based on the forest strata it occupies are at a tree height level of 0-30 meters (strata E-B) which has branches, canopies, and produces young leaves and fruits. Furthermore, the LTM habitat has vegetation characteristics with medium density and cover which has an NDVI value of 0.3-0.5. This indicates the character of this habitat is used as a place to rest, socialize, and avoid from predators. Based on the distance of the river, the habitat characteristics are the location which is quite far from the river, which is > 300 meters. Based on the data on the habitat characteristics of LTM, it shows that Kucur Resort provides a fairly good habitat for the LTM.","PeriodicalId":353803,"journal":{"name":"BERKALA SAINSTEK","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128258379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Effect of Duck Egg Shell Ash with Fly Ash as Cement Substitution in Geopolymer Concrete 鸭壳灰与粉煤灰替代水泥在地聚合物混凝土中的应用效果

BERKALA SAINSTEK Pub Date : 2022-06-28 DOI: 10.19184/bst.v10i2.29080

Deka Larasati, Dwi Nurtanto, Nanin Meyfa Utami

{"title":"Effect of Duck Egg Shell Ash with Fly Ash as Cement Substitution in Geopolymer Concrete","authors":"Deka Larasati, Dwi Nurtanto, Nanin Meyfa Utami","doi":"10.19184/bst.v10i2.29080","DOIUrl":"https://doi.org/10.19184/bst.v10i2.29080","url":null,"abstract":"The increasing production of cement as a basic material for making concrete is due to the increasing demand for concrete throughout the world. Innovative materials are needed as a substitute for cement to reduce the greenhouse effect, fly ash is pozzolanic which in fact has the potential to replace Portland cement as the main ingredient of concrete, and duck eggshell flour has good prospects to be used as an additional precursor material for geopolymer concrete. This study aims to determine further variations of the proportion of duck egg shells, the mechanical properties of the concrete produced using duck egg shell ash with fly ash. This study used an experimental method with the percentage of duck egg shell ash at 0%, 5%, 10%, and 15% of the total use of cement. Using Na₂SiO₃ and NaOH as activator with a concentration of 14M. At the age of 7 and 28 days with room temperature treatment. This study resulted in duck egg shell ash being able to increase the compressive strength of concrete at the age of 28 days with the percentage of substitution up to 5% with a value of 59.26 MPa, in the porosity test the minimum value was at the age of 28 days at a percentage of 5% 0.403%, and the value of the modulus of elasticity. experienced an increase in value at a percentage of 5% with the result 36071.43 MPa. Duck egg shell ash with a proportion of 5% is the optimum substitution where the compressive strength, porosity and modulus of elasticity tests on geopolymer concrete have linear values.","PeriodicalId":353803,"journal":{"name":"BERKALA SAINSTEK","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116757423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of Two Dimensional Sensitivity as Decision Support Alternative Waste Management in TPST Bantargebang 二维敏感性分析作为决策支持的TPST替代废物管理

BERKALA SAINSTEK Pub Date : 2022-06-28 DOI: 10.19184/bst.v10i2.31293

T. Sukwika, N. Sukamdani, M. Maharani

{"title":"Analysis of Two Dimensional Sensitivity as Decision Support Alternative Waste Management in TPST Bantargebang","authors":"T. Sukwika, N. Sukamdani, M. Maharani","doi":"10.19184/bst.v10i2.31293","DOIUrl":"https://doi.org/10.19184/bst.v10i2.31293","url":null,"abstract":"The importance of waste management at the TPST Bantargebang Bekasi is very high. Some sensitive issues such as pollution, social issues, and the requirement of wider area are several issues needed to be considered further. Therefore, this study tries to highlight the best alternative in waste management at the TPST Bantargebang with a two-dimensional approach using AHP (Analytical Hierarchy Process) analysis. Through a two-dimensional approach, it is hoped that adequate priority options can be found regarding alternative integrated waste management at the TPST Bantargebang Bekasi. Collecting data through expert interviews assisted by questionnaires, supported by other sources of data and information from various relevant agencies. The results of the two-dimensional sensitivity graph from the iteration of the three-goal criteria pair, namely waste management innovation, expansion of the TPST area, and strengthening regulations show that alternative decisions in integrated waste management at the TPST Bantargebang several times have raised alternatives to increase Human Resources (HR) to support activities. In conclusion, the most important alternative decision is to increase human resources. The policy implication of this study is that it is necessary to add more educated staff at the Bantargebang TPST so that the target of serving the needs of the community in terms of waste management can be carried out effectively, therefore, increasing human resources both in terms of competence and number is a priority to support the development of integrated waste management at the TPST Bantargebang.","PeriodicalId":353803,"journal":{"name":"BERKALA SAINSTEK","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126171132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Synthesis of Zeolite-NaY for Methane Adsorption 甲烷吸附沸石- nay的合成

BERKALA SAINSTEK Pub Date : 2022-06-28 DOI: 10.19184/bst.v10i2.31356

I. Susanti, S. A. Wulandari, Silvi Rosiva Rosdiana

引用次数: 0

Proximate and Essential Macrominerals Analysis of Tembakul (Mudskipper) Fish Flour as a Food Source for Stunting Prevention 作为预防发育不良食物来源的Tembakul(弹涂鱼)鱼粉的比邻量和必需量矿物质分析

BERKALA SAINSTEK Pub Date : 2022-06-14 DOI: 10.19184/bst.v10i1.31030

Desriani Lestari, Lucky Hartanti, M. Sofiana, Agus Yuliono, B. Kurniadi

{"title":"Proximate and Essential Macrominerals Analysis of Tembakul (Mudskipper) Fish Flour as a Food Source for Stunting Prevention","authors":"Desriani Lestari, Lucky Hartanti, M. Sofiana, Agus Yuliono, B. Kurniadi","doi":"10.19184/bst.v10i1.31030","DOIUrl":"https://doi.org/10.19184/bst.v10i1.31030","url":null,"abstract":"The main cause of stunting is due to inadequate food intake according to the needs for growth and development of children, or insufficient nutrition of pregnant women. The low nutritional intake of pregnant and lactating mothers as well as children under five years old who are still growing and developing is generally caused by the wrong diet. One of the efforts to prevent stunting from an early age is to search for several sources of animal source food containing protein, fat and macro essential minerals according to nutritional standards. The purpose of this study was to determine the proximate content including protein and fat nutrition, water content and ash content, as well as mineral content including calcium, iron and phosphorus, from Tembakul (mudskipper) fish flour as the main needs in the growth of children, during pregnancy and lactation. Protein analysis was carried out using the Kjeldahl method, and fat analysis by extraction using a non-polar solvent, while the determination of essential macro minerals calcium and iron was carried out using an Atomic Absorption Spectrophotometer, and phosphorus analysis using ultraviolet spectrophotometry. The proximate content of Tembakul (mudskipper) fish flour from the Mempawah mangrove ecosystem is fat content (1.80%), protein content (50.67%), water content (24.58%), and ash content (20.20%). Mudskipper fish flour contains 3 essential minerals, namely Calcium (2.15%), Phosphorus (2.50%) and Iron (270.26 ppm).","PeriodicalId":353803,"journal":{"name":"BERKALA SAINSTEK","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116093096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Essential Oils Activity of Legundi Leaf (Vitex trifolia L.) as A Repellent for Rice Weevil (Sitophilus oryzae) 豇豆叶精油对水稻象鼻虫的驱避活性研究

BERKALA SAINSTEK Pub Date : 2022-06-11 DOI: 10.19184/bst.v10i1.31011

A. Jayuska, W. Warsidah, Nur Asikin, Ari Widiyantoro, A. B. Aritonang

{"title":"Essential Oils Activity of Legundi Leaf (Vitex trifolia L.) as A Repellent for Rice Weevil (Sitophilus oryzae)","authors":"A. Jayuska, W. Warsidah, Nur Asikin, Ari Widiyantoro, A. B. Aritonang","doi":"10.19184/bst.v10i1.31011","DOIUrl":"https://doi.org/10.19184/bst.v10i1.31011","url":null,"abstract":"Legundi (Vitex trifolia L.) is a plant that contains essential oils. Legundi leaf essential oil has the potential as a more environmentally friendly rice lice repellent. The process of extracting essential oils from Legundi leaves uses the steam-water distillation method. The yield obtained from distillation is 0.10% with a bright yellow color, has a distinctive smell of Legundi oil with a specific gravity of 0.9065 gram/cm3. GC-MS search results showed that Legundi leaf essential oil contains 5 main components, namely 2-β-Pinene (16.18 %), trans-caryophyllene (13.75 %), β-Ocimene (11.16 %), Cyclohexanol (10.03%), and Eucalyptol (5.45%). Testing of repellent activity was carried out on rice lice with variations in volatile oil concentrations of 1%, 5%, 10%, and 20%. The results of the repellent test showed that the highest percentage occurred at a concentration of 20% (P4), which was 56.7%, with an application time of 120 hours (L5). Based on this, it can be said that the greater the concentration of the essential oil used, the higher the percentage of rejection of the population, this also indicates that Legundi leaf essential oil has lice repellent activity (Sitophilus oryzae).","PeriodicalId":353803,"journal":{"name":"BERKALA SAINSTEK","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123912186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Effect of Various Concentration BAP (6-Benzyl Amino Purine) on Orchid Growth (Macodes petola (Blume) Lindl.) In-Vitro 不同浓度BAP(6-苄基氨基嘌呤)对兰科植物生长的影响体外

BERKALA SAINSTEK Pub Date : 2022-04-19 DOI: 10.19184/bst.v10i1.27091

Muchfa Eprilia Muchsin, A. Supriatna, A. Adawiyah, Adisty Virakawugi Darniwa

引用次数: 0

Groundwater Distribution and Potency in Faculty of Mathematics Natural Sciences, Universitas Jember based 3-Dimensional Resistivity Data Modelling 基于三维电阻率数据建模的德国Jember大学数学与自然科学学院地下水分布与潜力

BERKALA SAINSTEK Pub Date : 2022-04-19 DOI: 10.19184/bst.v10i1.23025

H. P. Sari, A. Suprianto, Nurul Priyantari

引用次数: 0

Design of a Falling Ball Speed Measuring Instrument in Viscosity Experiment Using Arduino UNO ATmega 基于Arduino UNO ATmega的粘度实验落球速度测量仪的设计

BERKALA SAINSTEK Pub Date : 2022-04-19 DOI: 10.19184/bst.v10i1.27315

B. Budiyono, E. Sutrisno, Taufik Usman Wibowo

{"title":"Design of a Falling Ball Speed Measuring Instrument in Viscosity Experiment Using Arduino UNO ATmega","authors":"B. Budiyono, E. Sutrisno, Taufik Usman Wibowo","doi":"10.19184/bst.v10i1.27315","DOIUrl":"https://doi.org/10.19184/bst.v10i1.27315","url":null,"abstract":"Viscosity experiments in universities generally use falling ball method with manual observations. Measuring travel time of iron ball from one point to another manually using a stopwatch can cause a large error. This problem can be solved by designing a digital falling ball viscometer using infrared and photodiode configured with Arduino. Infrared and photodiode pairs are placed in the top and bottom glass tubes to detect the movement of iron ball so that it produces a change in voltage. This voltage change is used to mark start and stop times in time measurement. The time measurement obtained is then used to calculate speed of the ball through the formula for distance between sensors divided by time. Data obtained is then entered into viscosity formula of falling ball method to obtain viscosity value of fluid (oil). The digital falling ball viscometer is accurate when error obtained is less than 5%. The results obtained are the error of the digital viscometer measurement results are better than the error of the manual viscometer. The highest error obtained from the digital viscometer is 4%, while the lowest is 1%. This indicates that the digital falling ball viscometer has a high enough accuracy so that data obtained is in accordance with the reference and can be used as a viscosity experiment tool using falling ball method.","PeriodicalId":353803,"journal":{"name":"BERKALA SAINSTEK","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124004646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Pattern of Microwave Scattering by the Dielectric of Milks 牛奶介质对微波的散射规律

BERKALA SAINSTEK Pub Date : 2022-04-19 DOI: 10.19184/bst.v10i1.30155

A. T. Nugroho, N. Sa'adah, B. E. Cahyono

引用次数: 0