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Field Work Practice (PKL) at Tambak Mina Bangkit Bersama (MIBAMA), Karangrejo, Banyuwangi, was conducted from June 26 to August 3, 2024, with the aim of understanding the process of growing Litopenaeus vannamei shrimp in HDPE ponds. Vaname shrimp farming involves pond preparation, seedling stocking, feed management, and water quality monitoring to optimize shrimp growth. Growth monitoring was carried out through sampling, resulting in an Average Daily Growth (ADG) value ranging from 0.41 to 0.71 grams per day. Water quality measurements showed that temperature, pH, and dissolved oxygen levels were still within safe ranges, although several parameters such as salinity, TDS, and ORP required special attention. Partial and total harvesting resulted in an accumulated production of 5.1 tons in this cycle. The use of HDPE ponds proved effective in maintaining the aquaculture environment and supporting production intensification. This study emphasizes the importance of proper water and feed quality management to enhance shrimp productivity and health, while also providing recommendations for continuous monitoring to address stress factors in shrimp during cultivation.

The black sea cucumber (Holothuria atra) holds significant ecological and economic value in tropical marine ecosystems, including those of Maluku, Indonesia. This study aimed to estimate population density, spatial distribution patterns, and their relationship with environmental conditions along the Haenesai coast, Hulung Village, Taniwel District, West Seram Regency. Sampling was carried out using the belt transect method (50 m × 2 m) at three stations with three replications, while physicochemical parameters of seawater (temperature, salinity, pH, dissolved oxygen, and transparency) were measured in situ. A total of 96 individuals of H. atra were recorded, with an average density of 10.6 ind/100 m². Station I exhibited the highest density (13 ind/100 m²), whereas Station II showed the lowest (9.3 ind/100 m²). Distribution patterns were generally uniform at Stations I and II, while Station III displayed a clustered pattern. These variations are likely influenced by differences in water transparency, dissolved oxygen, and substrate heterogeneity that affect food availability. Overall, environmental conditions remained suitable for H. atra, although evidence of exploitation pressure from local harvesting was observed. Ecologically, H. atra plays a critical role as a bioturbator, maintaining sediment quality and coastal ecosystem stability. This study highlights the need for regulated harvesting, habitat protection, and aquaculture development as strategic measures for the sustainable management of sea cucumber resources in Maluku.

This study aims to analyze the growth of tilapia (Oreochromis niloticus) cultivated in a concrete pond system in Dusun IV, Fadoro Lasara Village, Gunungsitoli City. The concrete pond system was chosen for its advantages in land efficiency, ease of management, and ability to maintain stable water quality. The research method employed a quantitative experimental approach over 60 days, with 200 Nile tilapia as the study subjects. The parameters observed included absolute weight and length gain, specific growth rate (SGR), feed conversion ratio (FCR), and survival rate (SR). The results showed that the average weight of the fish increased from 5.12 grams to 98.46 grams, with a length increase of 12.5 cm. The SGR was recorded at 4.29% per day, FCR at 1.38, and SR at 96.5%. These results indicate that the concrete pond system can support optimal tilapia growth. This study recommends the application of concrete ponds as an efficient aquaculture alternative, particularly in areas with limited land and resources. This system has proven to be adaptive to local conditions and contributes to increased productivity and income for aquaculture farmers.

Identifying fish species found in the Sendang Seruni stream, Tamansari Village, Licin District, Banyuwangi Regency, and analyzing the diversity and quality of its waters. Sampling was conducted over 14 days in July 2025 using umbrella traps, fishing rods, and underwater camera observations at three observation stations. The results of the study showed that there were six fish species, namely Rasbora lateristriata (Wader Pari), Barbodes binotatus (Wader Cakul), Oreochromis niloticus (Nila), Gambusia affinis (Cere), Nemacheilus fasciatus (Uceng), and Channa striata (Channa). The most abundant species was Wader Pari (25 individuals), while Channa was only one individual. Fish diversity in Sendang Seruni was classified as low with an H' value of 1. Clean, stable, and oxygen-rich water quality supports the existence of sensitive species such as B. binotatus, while polluted waters tend to be dominated by tolerant species. These results indicate the need for habitat management and conservation efforts to maintain the balance of the Sendang Seruni aquatic ecosystem. 

White Feces Disease (WFD), which infects Pacific white shrimp (Litopenaeus vannamei), poses a serious challenge in aquaculture due to its potential to cause mass mortality and substantial economic losses. One of the main causes of this disease is bacterial infection from the genus Vibrio. The use of natural substances, such as garlic (Allium sativum) extract, is considered a more environmentally friendly and sustainable alternative for disease control. This study aimed to examine the effect and determine the optimal concentration of garlic extract in inhibiting the growth of Vibrio sp. isolated from WFD-infected L. vannamei ponds, cultured on TCBS media. The study was conducted in vitro using the disc diffusion method with four extract concentrations (25%, 50%, 75%, and 100%) against two bacterial isolates, designated as isolate A and isolate B. The results showed that garlic extract was able to inhibit the growth of Vibrio sp., with the largest inhibition zone observed in isolate A at 75% concentration (14.8 mm) and in isolate B at 100% concentration (19.3 mm). These findings indicate the potential of garlic as a natural antibacterial agent to inhibit pathogenic bacteria and support the sustainability of shrimp aquaculture.

This study aims to determine and analyze the effect of Social Media Marketing and Environment Knowledge on Green Purchase Intention with Customer Trust as a Mediating Variable in Generation Z in Sleman. This study uses quantitative research methods using a questionnaire. The population in this study is Generation Z in Sleman, Yogyakarta Special Region who consume drinking water in gallons of the Aqua brand. The data collection technique used purposive sampling technique. The sample in this study amounted to 95 respondents. The analysis method used in this research is Partial Least Square (PLS). The results showed that social media marketing has a significant direct effect on green purchase intention, environmental knowledge has a significant direct effect on green purchase intention, social media marketing has a significant direct effect on customer trust, environmental knowledge has a significant direct effect on customer trust. Meanwhile, customer trust does not have a significant direct effect on green purchase intention. In the mediation test, customer trust is able to mediate social media marketing on green purchase intention and customer trust is able to mediate environmental knowledge on green purchase intention.

Technological advancements, particularly in microcontrollers and the Internet of Things (IoT), have brought significant changes to various aspects of life. Microcontrollers such as the ESP32, DS18B20 sensor, water pH sensor, and other supporting sensors enable the development of efficient automation systems. This research addresses issues related to the design and development of IoT devices for water quality monitoring, as well as the integration of these devices with web-based systems. The objective is to develop a device capable of monitoring water quality parameters such as pH, temperature, turbidity, dissolved materials, salinity projection, and dissolved oxygen projection, while providing automatic notifications under certain conditions. The development process applies the Agile methodology, which allows for rapid and adaptive iterations. Theoretically, this study contributes to improving understanding of IoT implementation and information systems, while practically, it provides a technological solution to support Koi fish farmers in monitoring and managing pond water quality. The expected outcome is a web-based water quality monitoring and management device for Koi ponds that can deliver real-time information and condition notifications, thereby reducing aquaculture risks and improving productivity.

Kuala Indah Village in Sei Suka, Batubara, North Sumatra, is a coastal village whose economy relies on fisheries and aquaculture. The community is predominantly Muslim and also practices small-scale agriculture and animal husbandry. The Community Service Program (KKN) provides a platform for students to apply academic theory in real-world contexts, while also encouraging active community involvement. KKN students implement various programs, such as stunting prevention, religious moderation, skills training for poverty alleviation, and education for children and adolescents. They also play a role in increasing community participation through cultural activities and supporting local businesses by strengthening digital visibility. These initiatives support the creation of inclusive villages, providing equal access and opportunities regardless of gender, religion, or socioeconomic status. This collaborative approach reinforces the value of mutual cooperation and enriches social and educational life in the village. Through KKN, universities demonstrate their tangible contribution to village development. The success of this program underscores the importance of social inclusion and collective work in promoting sustainable development in rural areas like Kuala Indah.  

Capture fisheries are an important economic sector in the coastal area of ​​Depok Beach, Yogyakarta Special Region. Fishing activities in this area use various fishing gear, one of which is the bottom gill net. However, the use of this fishing gear can have negative impacts on the aquatic environment and marine ecosystem, such as the decline in the population of white pomfret and ribbonhead fish, which are the main catch. This study aims to analyze the level of environmental friendliness of the use of bottom gill nets in Depok Beach using a descriptive quantitative approach. The methods used in this study include direct surveys of fishermen, observation of fishing operations, and analysis of catch results. Data were collected through a questionnaire containing 9 indicators compiled by the FAO, which cover aspects of gear selectivity, impact on aquatic habitats, fisherman safety, catch quality, and social acceptance of the fishing gear. The results showed that bottom gill nets had the lowest level of selectivity with a score of 1.13, indicating that this tool is less selective in selecting the types of fish caught. However, the indicator regarding consumer safety received the highest score of 4.00. Overall, the test results show that the use of bottom gill nets at Depok Beach has an environmental friendliness score of 27.06, which indicates that this fishing gear is classified as environmentally friendly even though it needs improvement in terms of selectivity.

Tonic is a preparation thats can stqrengsthen the body and improve stamina. Curcuma zedoaria and Curcuma aeruginosa are known to have phytochemical compunds such as flavonoids, alkaloids, saponins, tannin, triterpenoids, curcuminoid and polyphenols that can function as stimulant and tonics. This studiy aimed to investigate tonic effects of ethanolic extracts of Curcuma zedoaria, ethanolic extract of Curcuma aeruginosa, and their combinations on male white mice (Mus musculus). Curcuma zedoaria rhizome and Curcuma aeruginosa rhizome were extracted using the maceration method for 3 days using 70% ethanol solvent which was then thickened in a waterbath. A total of 35 male mice were divided into 7 groups with different treatments, including negative control (aquadest), positive control (caffeine 100 mg/kgBB), ethanolic exctract of Curcuma zedoaria (600 mg/kgBB), ethanolic extract of Curcuma aeruginosa (600 mg/kgBB), and combination ethanolic extract of Curcuma zedoaria and Curcuma aeruginosa at dosage of 150:450 mg/kgBB, 300:300 mg/kgBB, and 450:150 mg/kgBB. Tonic effect were evaluated using natatory exhaustion and rotarod tests. The natatory exhaustion test is carried out by observing how long the mice swim, while the rotarod test is carried out by observing how long the mice stay on the rotarod apparatus. The data analyzed using ANOVA and Tukey’s test. The results of One Way Anova showed a there were significansts differensce in each groups (p<0,05) with combination of Curcuma zedoaria : Curcuma aeruginosa (150:450 mg/kgBB) yielding the best tonic effect. From the result of Tukey’s followsup test, it showed that the highers the dosae of Curcuma aeruginosa rhizome extracts the better the tonics effects giiven. This suggest that Curcuma aeruginosa has a dominant role in enhancing phsycal endurance in male white mice.

Amphibian Cessna 172 SP is an aircraft designed to operate in aquatic environments and is frequently exposed to seawater, which is highly corrosive. Such exposure poses a serious issue of corrosion affecting both the structure and components of the aircraft, particularly the floats, lower fuselage, and propeller. Corrosion not only reduces the quality and integrity of the material but also potentially compromises flight safety and increases maintenance costs. This study aims to analyze the causes of corrosion on the Seaplane Amphibian Cessna 172 SP using the fishbone diagram to identify the main contributing factors, including material, method, environment, manpower, and machine. In addition, the 5W+1H approach is employed to examine the problem in greater detail and develop preventive strategies. The results of the analysis indicate that the dominant factors causing corrosion are the high intensity of direct contact with seawater, suboptimal cleaning processes due to limited manpower, and the use of cleaning agents not fully compatible with aircraft materials. Mitigation efforts include implementing more effective cleaning procedures, applying anti-corrosion chemicals such as AeroShell Fluid 41, Bonderite Turco S.S.2, Ardrox AV-15, CorrosionX, Toolmates Dry Film Lubricant 6075, and Ultra Tef-Gel, as well as conducting scheduled inspections at specific intervals. This research is expected to provide more appropriate preventive strategies to extend the service life of the aircraft structure while maintaining both operational safety and efficiency.

The Community Service Program (Kuliah Kerja Nyata/KKN) conducted by Mulawarman University in Muara Badak Ulu Village, Kutai Kartanegara Regency, focused on introducing and strengthening the existence of the Muara Berau Biccu Forest Farmers Group (Kelompok Tani Hutan/KTH) to the wider community. This group plays an important role as a community forum for managing forests in a sustainable and equitable manner, encompassing the utilization of both timber and non-timber forest products. As part of the program, the students designed and implemented several activities aimed at raising public awareness and encouraging participation. The methods included creating an identity signboard for KTH as an official symbol of recognition, installing educational boards highlighting the importance of mangrove planting for coastal ecosystems, conducting mangrove planting using the silvofishery system that integrates environmental sustainability with aquaculture productivity, and developing a blog as a digital information platform accessible to the public. Through these initiatives, the program sought to enhance community knowledge about the ecological functions of mangrove forests, the importance of sustainable pond management for long-term productivity, and the benefits of having an online information medium to promote, document, and expand the networks of KTH Muara Berau Biccu. The results demonstrated an increased level of environmental awareness among community members, active participation in mangrove planting activities, and the establishment of a new communication medium that has the potential to strengthen the group’s position at both local and regional levels. Overall, the KKN program contributed significantly to supporting sustainable community-based forest and coastal resource management.

Mangroves play a crucial strategic role in maintaining coastal ecosystem balance, serving as habitats for aquatic organisms and functioning as natural biofilters that help reduce pollution. Nevertheless, mangrove degradation in Indonesia, including in Kutai Kartanegara Regency, remains a significant challenge caused by human activities such as aquaculture expansion, settlement growth, and industrial development. Muara Badak Ulu Village, located within this regency, possesses extensive mangrove resources that require integrated conservation strategies. This community service program was carried out in collaboration with the Salo Sumbala Forest Farmers Group (KTH) to promote conservation, sustainable economic development, and local community empowerment. The activities included the installation of educational banners, community-based mangrove replanting, and the production of a profile video highlighting local potential. Over a 40-day period, these initiatives received enthusiastic responses from local residents, reflecting increased awareness of the ecological and economic importance of mangroves. The program emphasized participatory approaches, where local community members, particularly KTH, were actively engaged in every stage of planning and implementation. Beyond ecological benefits, the initiative is expected to support sustainable management of non-timber forest products, enhance economic opportunities, and strengthen environmental stewardship among coastal communities. Overall, this program demonstrates that community-driven mangrove conservation can generate multiple impacts: restoring degraded ecosystems, fostering collective awareness, and building resilience in coastal areas facing environmental challenges. Thus, the collaboration between higher education institutions and local communities provides a practical model for achieving sustainable development and environmental preservation.

Panggungrejo District in Pasuruan City is a central hub for fishing activities with significant potential for capture fisheries production. One of the fishing gears used by fishermen in this area is the boat dredge, which is classified as an active fishing gear. This study aims to assess the environmental friendliness of the boat dredge used by fishermen in Panggungrejo based on the principles of the Code of Conduct for Responsible Fisheries (CCRF). The research employs a descriptive method, using data collection techniques such as interviews with structured questionnaires, direct observations, document analysis, and literature review. The study involved 32 respondents consisting of fishermen using the boat dredge. Data analysis was performed by assigning scores based on the principles outlined in the CCRF that are related to sustainability and environmental impact of the fishing gear. The results showed that the boat dredge in Panggungrejo scored a total of 855, with an environmental friendliness score of 26.71. Based on this score, the boat dredge falls into category III, considered “environmentally friendly.” However, several indicators related to resource efficiency and the impact on aquatic ecosystems still need improvement to further enhance the environmental friendliness of this fishing gear. This study provides recommendations for the development and improvement of more environmentally friendly fishing techniques and increasing fishermen’s awareness of sustainability in fisheries practices.

This study aims to analyze the development strategy of vannamei shrimp (Litopenaeus vannamei) cultivation business in the intensive pond system at CV Jaya Tirta Vannamei, Probolinggo, East Java. The research applied a qualitative descriptive approach combined with SWOT analysis to evaluate both internal and external factors affecting the business. Data were obtained through observation, interviews, and documentation, then processed to generate alternative development strategies. The results show that CV Jaya Tirta Vannamei possesses strong internal resources such as experienced human resources, reliable production facilities, and good management capabilities. Externally, the company benefits from the rising demand for vannamei shrimp in domestic and global markets, the availability of modern aquaculture technology, and supportive government policies. Nevertheless, some challenges exist, including fluctuating shrimp prices, vulnerability to disease outbreaks, and relatively high operational costs, which may influence business continuity if not addressed effectively. Based on the SWOT analysis, the most appropriate development strategy is the S-O (Strengths–Opportunities) strategy, with an alternative strategy score of 3.72. The recommended strategies are: (1) increasing shrimp production through the adoption of advanced and sustainable cultivation technology, (2) developing and maintaining a reliable water quality management system to enhance productivity, (3) utilizing skilled human resources to strengthen innovation in cultivation techniques, and (4) ensuring the availability of sufficient and quality feed to support continuous production growth. In conclusion, implementing the S-O strategy provides an effective pathway for CV Jaya Tirta Vannamei to optimize its internal strengths in response to external opportunities. By improving technology application, strengthening resource utilization, and enhancing production management, the company can secure competitive advantage, increase productivity, and ensure long-term sustainability in the rapidly growing aquaculture industry.

A lopography or barium enema colostomy is a radiographic examination of the colon using a contrast medium inserted through a colostomy. This examination aims to evaluate the condition of the colon after the colostomy, including detecting the presence of obstructions or masses in the gastrointestinal tract. The contrast medium used is a type of non-ionic soluble water that is inserted through the stoma and anus orifice until it fills the entire colon, characterized by the exit of contrast through the stoma. The examination was carried out using several radiographic projections, including plain photographs of the AP abdomen, as well as post-contrast projections of the Antero Posterior (AP), Right Posterior Oblique (RPO), Left Posterior Oblique (LPO), and lateral. This study aims to find out the procedure for the Lopography examination at the Radiology Installation of Caruban Hospital and the medical reasons for the use of two channels of input of contrast media, namely through the stoma and anus. The method used is qualitative descriptive research with a case study approach. The study was carried out from November to May 2025, with one post-colostomy patient as a sample. Data collection was carried out through direct observation, interviews with medical personnel, and documentation of radiographic procedures. Data analysis includes data reduction, data presentation, and conclusion drawn. The results of the study showed that the procedure of Robotic examination did not require any special preparation before the procedure. The non-ionic contrast medium used is mixed with aquades at a ratio of 1:3 (about 200 cc), and inserted through both the stoma and the anus to obtain a thorough visualization of the colon. The selection of two input paths aims to ensure that there are no blockages or masses that block the contrast flow. The projections used are adjusted to provide maximum information about the structure of the colon after colostomy

The KKN Program of Universitas PGRI Adi Buana Surabaya for the 2024–2025 period in Kajeksan Village, Sidoarjo Regency, focuses on the issue of family food security by implementing a mixed farming system based on the use of used goods. This service method uses Participatory Action Research (PAR) through the stages of to know (identifying problems), to understand (socialization of concepts), to plan (design a system from gallons of mineral water), to act (training and assistance in making hydroponics-aquaponic systems, making fish feed from household waste, and natural vitamins), and to change (evaluation and sustainability). As a result, there is an improvement in community skills with the realization of catfish harvest along with optimal kale growth, opening household business opportunities, and creating a sustainable empowerment model through appropriate technology transfer.

Acid mine drainage (AMD) is one of the major environmental problems arising from coal mining activities. AMD is formed through the oxidation of sulfide minerals, resulting in acidic water with high concentrations of dissolved heavy metals. This condition is characterized by elevated levels of Fe, Mn, and total suspended solids (TSS), which, if left untreated, can pollute nearby water bodies, damage aquatic ecosystems, and pose risks to human health. Therefore, effective, eco-friendly, and low-cost treatment methods are needed to minimize the negative impacts of AMD. This study aims to investigate the effect of activated carbon derived from sugarcane bagasse as an adsorbent for reducing Fe, Mn, and TSS levels in AMD at the sump of PT Alreksa Bara Mitra. The selection of sugarcane bagasse is based on its abundance as an agro-industrial waste and its high lignocellulosic content, making it a potential raw material for activated carbon. The research involved the preparation of activated carbon through carbonization and activation processes, followed by its application to AMD samples with variations in adsorbent dosage and contact time. Laboratory analyses were conducted to measure the concentrations of Fe, Mn, and TSS before and after treatment. The results showed that sugarcane bagasse-based activated carbon significantly reduced Fe, Mn, and TSS concentrations. The highest removal efficiencies were achieved under optimum conditions, reaching 93.14% for Fe, 95.05% for Mn, and 85.04% for TSS. These findings demonstrate that activated carbon from sugarcane bagasse has a strong adsorption capacity for dissolved metals and suspended solids in AMD. In conclusion, sugarcane bagasse-derived activated carbon has potential as an environmentally friendly and cost-effective alternative for AMD treatment, while simultaneously providing added value to agro-industrial waste. This research is expected to serve as a reference for the development of more sustainable mine wastewater treatment methods.

Marine conservation areas play a crucial role in maintaining the sustainability of aquatic ecosystems and fishery resources. However, many fishing vessels still violate regulations by entering and exploiting conservation areas without permission. This study aims to analyze the compliance level of fishing vessels with conservation regulations in the Anambas Islands, identify the factors contributing to non-compliance, and evaluate the effectiveness of the imposed sanctions. The research employs a qualitative and quantitative descriptive approach, utilizing SWOT analysis to assess internal and external factors affecting compliance. Data were collected through vessel movement monitoring using the Vessel Monitoring System (VMS), interviews with fishery inspectors, and analysis of relevant policy documents. The findings indicate that many fishing vessels fail to comply with conservation regulations, mainly due to fish migration into conservation areas, deliberate violations by business operators seeking higher profits, and a lack of understanding among captains regarding conservation boundaries. Additionally, limited human resources and monitoring facilities hinder effective law enforcement. Although sanctions are regulated under Government Regulation No. 85 of 2021, their effectiveness remains low, as evidenced by recurring violations. Therefore, strengthening supervision, optimizing monitoring technology, and raising fishermen’s awareness of conservation regulations are necessary to enhance compliance among fishing vessels and preserve marine ecosystems.

This research is motivated by the potential of the waters of South Palabusa, Buton, as an ideal habitat for pearl oyster cultivation. This region has ecological advantages that can support the growth of oysters producing high-value pearls. However, pearl production is still strongly influenced by the application of nucleus implantation techniques and the condition of the aquatic environment. Therefore, this study aims to determine the effect of nucleus implantation on pearl growth and quality and identify environmental factors that play a significant role. The research method used is descriptive quantitative, with subjects being Pteria penguin oysters cultivated by the local community for a period of one month. The main parameters observed included the oyster survival rate, pearl size growth, and the quality of the resulting nacre. The findings provide valuable insight into how nucleus implantation can optimize pearl farming practices. The results showed that oysters implanted with nucleus implants had a survival rate of between 85–90%. Pearl diameter growth reached 1–2 cm per month, with a thicker nacre layer and brighter color than oysters without nuclei. Environmental factors, such as water temperature of 28–30°C, salinity of 30–35 ppt, pH 7.5–8.5, moderate water currents, and high plankton availability, have been shown to support successful cultivation. These environmental factors act as natural enhancers that improve pearl quality and survival rates. The findings of this study imply that the application of appropriate nucleus implantation techniques, accompanied by good environmental management, can increase pearl yield and quality. This not only provides significant economic benefits for cultivators but can also serve as a basis for developing sustainable pearl cultivation strategies in potential Indonesian waters. Thus, sustainable pearl aquaculture can become a promising sector for local communities.