International Journal of Natural Science Studies and Development (IJOSS)
Focus The International Journal of Natural Science Studies and Development (IJOSS) is an academic journal dedicated to disseminating the latest and most innovative research in the field of natural sciences. IJOSS provides a platform for researchers, academics, and practitioners to publish high-quality research findings related to various disciplines within the natural sciences. The journal is committed to supporting scientific and technological advancement through the publication of articles that significantly contribute to the understanding and application of natural sciences. The International Journal of Natural Science Studies and Development (IJOSS) focuses on publishing high-quality research articles, literature reviews, and case studies in the field of natural sciences. Scope: Biological Sciences: Research related to living organisms, ecology, genetics, microbiology, botany, zoology, evolutionary biology, living organisms, ecosystems, genetics, biotechnology, and environmental biology. Chemistry: Research on chemical reactions, chemical substances, synthesis, materials chemistry, and environmental. Physical Sciences: Studies in physics, earth sciences, meteorology, environmental science, fundamental principles of physics, applied physics, materials physics, and nuclear physics. Interdisciplinary Natural Sciences: Integration of natural sciences with other disciplines, including biochemistry, biophysics, environmental science, and materials science. Developmental Studies: Research on the application of natural science principles in technology, environmental sustainability, and socio-economic development. Environmental Studies: Articles addressing climate change, pollution control, conservation efforts, and sustainability practices. Agricultural Sciences: Research focusing on agronomy, soil science, plant pathology, entomology, crop management, crop production, agricultural biotechnology, sustainable farming practices, and pest management. Natural Resource Management: Studies on the sustainable use and management of natural resources like water, forests, and minerals. Civil Engineering: Research that explores the intersection of natural sciences and civil engineering, including structural engineering, environmental engineering, geotechnical engineering, and sustainable infrastructure development. Scientific Methodology: Innovative methods and approaches in conducting and applying natural science research. Geosciences: Research on geological processes, geography, geophysics, and environmental changes.
Articles
27 Documents
<![CDATA[Assessment of Microplastic Contamination in Coastal Waters of Southeast Asia: Implications for Marine Ecosystems and Human Health ]]>
<![CDATA[Siregar, Rahmah Juliani]]>;
<![CDATA[Mohamed , Rasidah Binti]]>;
<![CDATA[Bagaskorowati, Riana]]>
<![CDATA[ International Journal of Natural Science Studies and Development (IJOSS) Vol. 1 No. 1 (2024): IJOSS ]]>
Publisher : <![CDATA[PT Inovasi Pratama Internasional ]]>
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DOI: 10.55299/ijoss.v1i1.3
<![CDATA[This study aims to assess the level of microplastic contamination in the coastal waters of Southeast Asia and evaluate its impact on marine ecosystems and human health. Data were collected from various coastal locations in Southeast Asia, including Indonesia, Malaysia, Thailand, and the Philippines, using standard water and sediment sampling methods. Laboratory analysis was conducted to identify and measure microplastic concentrations. The results indicate that all surveyed locations were contaminated with microplastics at varying concentrations. Microplastics were found in significant amounts in surface water, sediments, and marine organisms such as fish and shellfish. The study also explores the potential impacts of microplastics on marine ecosystems, including disruptions to the food chain and the potential for bioaccumulation of harmful substances in marine organisms. Additionally, the potential health risks for humans consuming seafood contaminated with microplastics were evaluated. These findings highlight a serious threat to both marine ecosystems and human health in Southeast Asia. The study underscores the urgent need for actions to reduce the use of single-use plastics and improve plastic waste management to protect marine ecosystems and public health. Furthermore, it recommends increasing public awareness and implementing stricter policies related to plastic waste management to reduce microplastic contamination in coastal environments.]]>
<![CDATA[The Effect of Provision of Chicken Cage Fertilizer and N Fertilizer on The Growth of Pakchoy (Brassica rapa L.) Plants With Verticultural Paralon System ]]>
<![CDATA[Simbolon, Fenty Maimunah]]>;
<![CDATA[Ginting, Sulaiman]]>;
<![CDATA[Dalimunthe, Mahyuddin]]>;
<![CDATA[Gunawan, Indra]]>
<![CDATA[ International Journal of Natural Science Studies and Development (IJOSS) Vol. 1 No. 1 (2024): IJOSS ]]>
Publisher : <![CDATA[PT Inovasi Pratama Internasional ]]>
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DOI: 10.55299/ijoss.v1i1.5
<![CDATA[The research was conducted in the greenhouse of the Faculty of Agriculture, Universitas Islam Sumatera Utara. The aim of this research is to know the effect of chicken manure and N fertilizer on growth and production of mustard pakcoy plant with parallon vertikultur system. The design of this study used a Completely Randomized Design (CRD) Factorial consisting of two factors and repeated three times. The first factor is the provision of chicken coop (A) which consists of 4 levels, namely: A0 = 0 g / parallon (Control); A1 = 1000 g / parallon; A2 = 2000 g / parallon; A3 = 3000 g / parallon. The second factor is N (N) fertilizer consisting of 4 levels, namely: N0 = 0 g / parallon (Control); N1 = 1.8g / plant; N2 = 3.7g / plant; N3 = 5.6g / plant. The results showed that chicken manure gave a very significant effect on all parameters observed. The provision of chicken manure has a very significant effect on the parameters of plant height, the number of leaves, the diameter of the cob. The results showed that N fertilizer gave very significant effect on the parameters of plant height, leaf number, diameter of cob. The interaction of chicken manure and N fertilizer gave a very real effect on the diameter of the hump. However, the effect is not significant on the parameters of plant height, number of leaves.]]>
<![CDATA[Impact of CBR Value of Soil in Soaked and Unsoaked Conditions Based on 2018 Division 3 Bill Specifications ]]>
<![CDATA[Lubis, Muhammad Yusuf Parlagutan]]>
<![CDATA[ International Journal of Natural Science Studies and Development (IJOSS) Vol. 1 No. 1 (2024): IJOSS ]]>
Publisher : <![CDATA[PT Inovasi Pratama Internasional ]]>
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DOI: 10.55299/ijoss.v1i1.6
<![CDATA[Soil is a construction material that is used as embankment to provide better soil bearing capacity and resilience to the soil itself. This research aims to determine the comparison of the CBR value of soil in soaked and unsoaked conditions based on the provisions of the 2018 Directoral of Highways Specifications Division 3.2 regarding embankments. In the research, the CBR results in the soaked condition were 6.15% and the unsoaked CBR was 9.64%. The CBR value requirement based on the 2018 Specifications is a minimum of 6% of the results obtained that meet the requirements for embankment CBR value, where the CBR value in the soaked condition is greater than the unsoaked condition. Based on these results, soaked embankment soil is suitable for use if the soil is compacted under conditions of continuous work, while unsoaked embankment soil can be used after the CBR value meets after the soaking process or a drying period of 4 days (96 hours).]]>
<![CDATA[Utilization of Casgot and Eco Enzyme Fertilizer as Nutrient Support to Increase the Growth of White Cooperate (Brassica Pekinensis L) of the Tahono Variety in Karo District ]]>
<![CDATA[Zulfansyah, Ichpan]]>;
<![CDATA[Yulianita, Siska]]>;
<![CDATA[Balatif, Fuad]]>;
<![CDATA[Panjaitan, Faisal Azhari Baldan]]>
<![CDATA[ International Journal of Natural Science Studies and Development (IJOSS) Vol. 1 No. 1 (2024): IJOSS ]]>
Publisher : <![CDATA[PT Inovasi Pratama Internasional ]]>
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DOI: 10.55299/ijoss.v1i1.7
<![CDATA[Efforts to increase the growth of white mustard plants can be done by providing Kasgot Fertilizer and POC Eco enzyme treatment. If you look at the correct dose, type, time and method of fertilization, the plant's response to fertilization will increase growth and yield. This research was carried out with the aim of determining the effect of plants on the concentration of Kasgot and POC Eco enzyme in white mustard plants. This research was repeated three times using a two-way randomized block design (RAK). The cassava concentration factor (K) has 4 levels, K0 (control), K1 (2 kg/plot), K2 (3 kg/plot), K3 (4 kg/plot). POC Eco enzyme factor (C) consists of 3 levels, namely E0 (control), E1 (20 ml/L), E2 (35 ml/L). Observation parameters include plant height, stem diameter, leaf width for each sample plant. Application of Kasgot Fertilizer had a significant effect on plant height and stem diameter of white mustard plants (3 kg/plot). The administration of POC Eco enzyme had no significant effect on all parameters observed. The interaction of providing Kasgot Fertilizer and POC Eco enzyme had no significant effect on all the treatments observed.]]>
<![CDATA[Potential use of Several Fungalendofit Fungus in Rubber Crops (Hevea Brasiliensis) Plant for Healrth Invesment (Colletotrichum gloeosporiodes) in Rubber Plant ]]>
<![CDATA[Ginting, Sulaiman]]>
<![CDATA[ International Journal of Natural Science Studies and Development (IJOSS) Vol. 1 No. 1 (2024): IJOSS ]]>
Publisher : <![CDATA[PT Inovasi Pratama Internasional ]]>
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DOI: 10.55299/ijoss.v1i1.8
<![CDATA[Rubber is a key plantation commodity in Indonesia, serving as a significant source of non-oil and gas foreign exchange. However, rubber productivity remains low, largely due to inadequate cultivation technology and the impact of pests and diseases. One of the most economically significant diseases affecting rubber plants is deciduous disease caused by Colletotrichum gloeosporioides, which spreads through spores carried by wind and rain. This study was conducted at the Sungei Putih Rubber Research Institute, North Sumatra, from February to June 2019, at an elevation of ± 25 meters above sea level. A factorial randomized block design (RBD) with three replications was employed. The treatments included three types of endophytic fungi (E1, E2, E3) derived from different isolates of PB 260 rubber clones, and four application methods (M0, M1, M2, M3). The observed parameters included latent period, disease occurrence, and disease intensity. The results indicated that the E2M2 treatment, which combined the second endophytic fungus with metabolite application, was the most effective in controlling C. gloeosporioides deciduous disease. This combination resulted in the highest average latent period (3.67%), the lowest disease occurrence (0.03%), and the most effective reduction in disease intensity (17.67% after 12 days). The study demonstrates the potential of specific endophytic fungi and application methods in managing rubber plant diseases, offering insights for improving rubber productivity in Indonesia.]]>
<![CDATA[Analysis of the Effect of Road Damage Conditions on Vehicle Speed (Case Study of Road Sections in Tanjungbalai City) ]]>
<![CDATA[Sihombing, Alexander Tuahta]]>
<![CDATA[ International Journal of Natural Science Studies and Development (IJOSS) Vol. 1 No. 1 (2024): IJOSS ]]>
Publisher : <![CDATA[PT Inovasi Pratama Internasional ]]>
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DOI: 10.55299/ijoss.v1i1.9
<![CDATA[Economic growth and technological advancements have increased mobility in various aspects of life, with land transportation being the primary choice for daily activities. In this context, the availability of good road infrastructure is crucial for ensuring the smooth operation of transportation systems. The condition of road pavement is a key factor that influences how efficiently the system operates, as poor pavement conditions can lead to longer vehicle travel times. A comprehensive analysis can help identify specific components that contribute to changes in road conditions over time. According to the Road Law (2004), public roads are classified based on their function into arterial roads, collector roads, local roads, and environmental roads, each with different characteristics in terms of travel distance and average speed. Road damage is generally divided into structural damage, which occurs when the pavement can no longer support traffic loads, and functional damage, which compromises the safety and comfort of road users, thereby increasing operational costs. Several factors contributing to road pavement damage include increased traffic loads, poor drainage systems, construction materials, unstable subgrade conditions, and Indonesia's tropical climate, characterized by high air temperatures and rainfall. Research conducted in Tanjung Balai City shows a correlation between road pavement conditions and vehicle speed; as pavement conditions deteriorate, vehicle speeds decrease. The results indicate a significant relationship, with an R2 value of 0.92, meaning a 92 percent correlation.]]>
<![CDATA[Degradation of Triadimefon Compounds in Bayleton 250 EC Pesticides by Sonolysis, Ozonolysis and Sonozolysis ]]>
<![CDATA[Kamila, Rahmi]]>
<![CDATA[ International Journal of Natural Science Studies and Development (IJOSS) Vol. 1 No. 2 (2024): IJOSS ]]>
Publisher : <![CDATA[PT Inovasi Pratama Internasional ]]>
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DOI: 10.55299/ijoss.v1i2.10
<![CDATA[The increase in the agricultural sector is supported by the use of pesticides to kill pests and diseases in plants. However, the continuous use of pesticides in excessive amounts can have a detrimental impact on the environment, especially the waters around agricultural land. Therefore, efforts are needed to degrade pesticide residues containing triadimefon compounds that pollute the environment such as sonolysis, ozonolysis, and sonozoisis methods. These three methods are organic compound degradation methods that utilize OH radicals to degrade organic compounds. Based on the data obtained, the sonolysis method with the addition of TiO2-anatase catalyst produced a degradation percentage of 76.25% after degradation for 150 minutes. While in a much shorter time, namely 15 minutes, using the ozonolysis method without the use of a catalyst, triadimefon can be degraded by 69.10%, and 71.87% with the sonolysis method. Since only a small amount of triadimefon is degraded by the sonozolysis method, it is more effective to use the ozonolysis method to degrade this triadimefon compound.]]>
<![CDATA[Identification and Analysis of the Nutrition Value of Black Teripang (Holothuriaedulis) and Sand Teripang (Holothuria Scabra) In the Waitiu Flow of Lewolema District ]]>
<![CDATA[Tukan, Maria Magdalena N. M.]]>;
<![CDATA[Betan, Antonius Bao]]>;
<![CDATA[Bili, Guido Anderlex]]>
<![CDATA[ International Journal of Natural Science Studies and Development (IJOSS) Vol. 1 No. 2 (2024): IJOSS ]]>
Publisher : <![CDATA[PT Inovasi Pratama Internasional ]]>
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DOI: 10.55299/ijoss.v1i2.13
<![CDATA[Indonesia is a country with a large area of water, with enormous potential for marine biodiversity which is useful as food, pharmaceuticals and cosmetics. There are several marine biota that produce secondary metabolites that are beneficial to humans, including microorganisms, blue green algae, green algae, brown algae, red algae, sponges, coelenterates, bryozoans, molluscs and sea cucumbers (echinoderms). Sea cucumbers are marine animals classified in the phylum Echinodermata, class Holothuroidea. This animal lives on sandy substrates or can be found in coral ecosystems. Sea cucumbers have complete and quite high nutritional content, but the existence of sea cucumbers with a high population in East Flores Regency has not been utilized properly. This study aims to identify and analyze the nutritional content of Sand Sea Cucumber (Holothuria Scabra) and Black Sea Cucumber (Holothuria Edulis). Identification is based on morphology and body color and spicules of the dorsal integument tissue, while the analysis of nutritional value includes water content and ash content using the gravimetric method, protein content using the Kjeldahl method, fat content using the Soxhlet method and carbohydrate content using the by difference method. The results of the study showed that the nutritional content of Sand Sea Cucumber (Holothuria Scabra) was 5.472% water content, 51.056% ash content, 27.072% protein content, 1.449% fat content and 20.424% carbohydrate content, while the nutritional content of Black Sea Cucumber (Holothuria Edulis) was 6.214% water content, 18.864% ash content, 51.636% protein content, 0.659% fat content and 28.841% carbohydrate content.]]>
<![CDATA[Evaluation of Urban Plant Vegetation on the Effects of Flight Noise Around the Airport Area ]]>
<![CDATA[Putra, Dimas Endrawan]]>;
<![CDATA[Dewantoro R, Daniel]]>;
<![CDATA[Prayitno, Hadi]]>;
<![CDATA[Rubiono, Gatut]]>;
<![CDATA[Wisnu, Kuncoro]]>
<![CDATA[ International Journal of Natural Science Studies and Development (IJOSS) Vol. 1 No. 2 (2024): IJOSS ]]>
Publisher : <![CDATA[PT Inovasi Pratama Internasional ]]>
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DOI: 10.55299/ijoss.v1i2.14
<![CDATA[In urban and industrial regions, noise pollution is becoming a bigger environmental issue, particularly around airports. Excessive noise can have a number of detrimental effects on people's physical and mental well-being. The World Health Organization (WHO) states that extended exposure to noise can raise blood pressure, cause sleep disruptions, cause hearing loss, and increase the risk of cardiovascular disease. The fast expansion of air travel and heightened airport operations in Indonesia have made the noise issue worse. A lot of study has been done on how to lessen airport noise. More environmentally friendly natural solutions, such as the use of plants as noise barriers, have attracted attention as effective and sustainable alternatives. It is hoped that this research can provide practical and effective solutions that not only reduce noise but also support environmental sustainability. Thus, the results of this research will provide long-term benefits for the community around the airport and educational institutions such as the Indonesian Aviation Academy Banyuwangi. With an average noise reduction percentage of 46.79%, the study's results demonstrate the most notable decrease in noise levels. With a noise reduction of 29.54%, Tunas Merah comes in second. With a noise reduction of 23.94%, the TFan spruce comes in third. Noise is only decreased by 17.77% in the absence of barrier plants.]]>
<![CDATA[Knowing and Understanding the Tuberculosis (Tb) Disease of the Lung (Literature Review) ]]>
<![CDATA[Arsyad, M. Hatadi]]>;
<![CDATA[Syafina, Ikhfana]]>;
<![CDATA[Hapsah, Hapsah]]>;
<![CDATA[Hervina, Hervina]]>
<![CDATA[ International Journal of Natural Science Studies and Development (IJOSS) Vol. 1 No. 2 (2024): IJOSS ]]>
Publisher : <![CDATA[PT Inovasi Pratama Internasional ]]>
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DOI: 10.55299/ijoss.v1i2.15
<![CDATA[Tuberculosis is a highly prevalent disease among individuals. The bacteria may enter the human body with inhaled air, after which they will be taken into the lungs, and then might disseminate from the lungs into the other parts of the body via the circulatory system, lymphatic system, respiratory tract-bronchi, or by direct passage to other areas. The most affected organs with tuberculosis are the lungs, but it may also affect other organs, including the meninges, bones, superficial glands, and other organs. They include: India, 26%; Indonesia, 8.5%; China, 8.4%; the Philippines, 6%; Pakistan, 5.7%; Nigeria, 4.4%; Bangladesh, 3.6%; and South Africa, 3.6%. These eight countries account for two-thirds of the global cases put together. 8.2% of tuberculosis cases are co-infected with HIV. Targeted by the national tuberculosis control program is the elimination of tuberculosis by 2035 and attainment of a tuberculosis-free status by 2050. Methods: This study is based on a review of general clinical practice guidelines, research publications, websites, and textbooks on pulmonary tuberculosis. Findings and Analysis: There are various research writings about the clinical presentations of the condition, confirmatory investigations for Mycobacterium tuberculosis, the epidemiology of the patients, and risk conditions that predispose a patient to getting infected by the bacteria. Therapeutic interventions and pharmacological adverse effects. Conclusion Pulmonary tuberculosis is a communicable disease, and Indonesia still has a population that carries this infection. Thus, prevention of the disease should be done by every single individual in society by understanding and knowing the character of the disease.]]>
