State University of Papua

Splenic rupture is a recognized complication of acute Plasmodium falciparum and Plasmodium vivax malaria, but the risk of splenic rupture in chronic asymptomatic infections is unknown. In Timika, Papua, Indonesia, we determined the proportion of PCR-detectable asymptomatic peripheral parasitemia in patients undergoing trauma-related splenectomy (2015-21) and found it was more than twice the proportion compared to a 2013 household survey of the general population (87.9% [29/33] vs 38.6% [697/1807]; P < .0001). Our findings suggest asymptomatic parasitemia with either P. falciparum or P. vivax is associated with splenic rupture following trauma, pointing toward an additional consequence of chronic infection in malaria-endemic areas.

Penelitian ini menganalisis perawatan komponen sistem bahan bakar pada motor bantu diesel di kapal KM Binama No. 7 milik PT Dwi Bina Utama yang beroperasi di Laut Arafura. Tujuan penelitian adalah mengidentifikasi komponen utama sistem bahan bakar, mengevaluasi pelaksanaan perawatan yang dilakukan di atas kapal, serta menilai pengaruhnya terhadap kinerja dan efisiensi operasional motor bantu diesel. Komponen yang dikaji meliputi tangki bahan bakar, racor, filter, feed pump, priming pump, pompa injeksi, dan injektor. Metode penelitian yang digunakan adalah observasi langsung terhadap kondisi peralatan, studi dokumentasi log book mesin, serta wawancara dengan kru kapal yang terlibat dalam kegiatan perawatan.Hasil penelitian menunjukkan bahwa pelaksanaan perawatan sistem bahan bakar dan fuel oil purifier yang dilakukan secara rutin dan terencana mampu meningkatkan kinerja operasional motor bantu diesel. Berdasarkan data log book mesin, downtime motor bantu menurun dari sekitar 4–5 jam per bulan menjadi ±1 jam per bulan, sedangkan jam operasi efektif meningkat dari sekitar ±180 jam per bulan menjadi ±210 jam per bulan. Temuan ini menunjukkan bahwa perawatan berkala berkontribusi positif terhadap peningkatan efisiensi operasional dan keandalan motor bantu diesel selama pelayaran. Penelitian ini diharapkan dapat menjadi referensi teknis dalam peningkatan praktik perawatan sistem bahan bakar pada kapal sejenis.

Abstract. Lekitoo MN, Lekitoo T, Santoso B, Saragih EW, Yoku O, Hariadi BT, Iyai DA, Sonbait LY. 2026. Forage species diversity and composition, and carrying capacity of rangelands in Teluk Wondama Regency, West Papua, Indonesia. Biodiversitas 27 (1): d270111. https://doi.org/10.13057/biodiv/d270111. Rangelands and natural pastures serve as the backbone of livestock feed. However, there is limited empirical data on their productivity and capacity to sustain livestock populations in lesser-known regions, such as Papua. The study aims to assess the botanical diversity and composition of forage in natural rangeland in Teluk Wondama Regency, West Papua, Indonesia, and to evaluate its carrying capacity. Botanical sampling was conducted by establishing 30 sample plots measuring 1×1 m2 in areas of 64 ha within the Warayaro natural rangelands. Forage productivity was estimated based on botanical composition, fresh forage, dry matter, and total digestible nutrients. The findings reveal that the rangeland in Warayaro is a heterogeneous pasture comprising 5 types of fodder, including 4 grasses and 1 legume species. Non-native species from 3 families dominated the pasture, namely Paspalum dilatatum, followed by Paspalum conjugatum, Centrosema pubescens, Eleusine indica, and Cyperus rotundus. The botanical composition consisted of 86.7% grasses and 13.3% legumes. Average forage yield is 2.0 t FM, 0.4 t ha-1 and 1.02 t ha-1 TDN. The existing Warayaro forage has a carrying capacity for cattle of 0.4 AU ha-1 yr-1 (FM), 0.3 AU ha-1 yr-1 (DM) and 0.8 AU ha-1 yr-1 (TDN). The Warayaro natural pasture has low production potential (264.7 kg TDN per 100 kg of livestock body weight) and moderate nutritional quality, with a protein content of only 11.2%. The Warayaro pasture is more suitable for growing young stock to reach a body weight of 182 kg. The carrying capacity of the rangeland for cattle and goat is 32 head yr-1 is 320 head yr-1, respectively. Key ecological recommendations include increasing the proportion of legumes through reseeding, implementing rotational grazing, and monitoring and controlling Cyperus rotundus to prevent competitive exclusion of forage species.

The Pancasila Student Profile Strengthening Program (P5) is an initiative designed to shape students' character holistically, in accordance with the noble values ​​of Pancasila, which are the foundation of national and state life. One concrete step in implementing this program is through community service activities carried out by students of the Chemistry Study Program, Tribuana Kalabahi University, at Wolwal High School. This activity not only aims to provide technical knowledge regarding ecoenzyme production, but also plays a role in strengthening the P5 dimensions which include mutual cooperation, independence, critical thinking, creativity, and global diversity. In this activity, Tribuana Kalabahi University students integrate the chemistry theory they have learned with the direct practice of making ecoenzymes from organic waste. The creation of ecoenzymes, which is an environmentally friendly solution in waste management, is an effective medium for instilling students' understanding of the importance of environmental awareness and the practical application of chemical concepts. Through this activity, students are not only involved in the technical process of ecoenzyme production but are also empowered to think critically about innovative, creative, and sustainability-based environmental solutions. They are trained to work collaboratively in groups, reflecting the spirit of mutual cooperation, while simultaneously developing independence in carrying out practical tasks. Furthermore, this activity also provides a space for students to appreciate diversity, strengthen open attitudes, and deepen their sense of responsibility towards environmental issues, which aligns with the values ​​of global diversity in P5.

This study examines the application of the principle of special autonomy in the recognition and protection of customary land rights of indigenous communities in West Papua Province and the obstacles to its implementation. Customary rights encompass not only physical land ownership but also the cultural and social values of indigenous communities. A qualitative normative approach was used, using literature studies and analysis of relevant legal documents. The results show that although Law Number 21 of 2001 and its derivative regulations legally recognize customary rights, their implementation is still hampered by conflicts of interest, overlapping claims to customary territories, weak inter-agency coordination, and minimal participation of indigenous communities in decision-making. Conflicts are further complicated by the lack of application of the principle of Free, Prior, and Informed Consent (FPIC) in projects in customary territories. Other obstacles include the limited capacity of customary institutions and social changes that weaken indigenous community solidarity. The study emphasizes the importance of strengthening customary institutions, legal assistance, and synergy between the government, indigenous communities, and stakeholders in developing affirmative policies based on local cultural values. Strategic recommendations include the drafting of Special Regional Regulations (Perdasus) and Provincial Regulations (Perdasi), legal training, and increased cross-institutional coordination to ensure effective and sustainable protection of customary rights in West Papua.

The article presents an investigation into the perceptions of preservice science teachers about AI adoption to support multilingual learners (MLLs) in science classrooms. AI has tremendous potential for tailoring learning, real-time translation, and support with engaging educational resources, uses that the pre-service teachers consider positive (Gladwin, Redefining Education for the AI Era: Strategies to Foster Critical Thinking with Advanced Technologies, 2024). On the other hand, effective integration is fraught with technical complexity and issues relating to data privacy and is limited in terms of formal AI training within teacher education programs (Kilinç, Asian J Distance Educ 18(1):205–237, 2023). This is a mixed-methods study that evaluates these teachers’ attitudes, training needs, and barriers. The quantitative data collected from Likert-scale surveys and qualitative insights obtained from open-ended responses indicate that most preservice teachers favor comprehensive hands-on AI training, from practical classroom applications to ethical data management, to make teachers confident and competent while using AI. Findings indicate that while preservice teachers recognize AIs potential for inequitable science education, they require comprehensive training in both practical AI applications and ethical considerations. This study provides a series of recommendations about how teacher education can incorporate AI training to ensure that the preservice teachers are well-positioned to improve the full potential of AI in equitable and effective science teaching.

One of Papua's special autonomy rights is the existence of the Papuan People's Council (MRP) as a cultural representation of the indigenous Papuan population which is given certain powers. The main problem is that the MRP, which is a direct representative of indigenous Papuans, is considered to have weak authority in carrying out the direct aspirations of the Indigenous Papuan people, including matters relating to the entry of foreign investors into their customary land. Therefore, the implications of foreign investment on the enjoyment and ownership of indigenous peoples' rights to land are becoming increasingly neglected. This research was conducted to examine the legal protection of Papua's indigenous communities through the role of the Papuan People's Council towards foreign investment. This type of research is included in normative juridical with a statutory approach. The research results show that the regulation of foreign investment in Indonesia is regulated by Law Number 25 of 2007. This law contains a number of principles which form the background for the formation of norms and rules contained in the articles of this law. The legal protection of Papua's indigenous communities in relation to foreign investment is realized through several provisions, including Article 38 paragraph (2) and Article 43 of Law Number 21 of 2001 concerning Special Autonomy for Papua Province. In this law, it is stipulated that economic businesses that utilize natural resources in Papua must respect the rights of indigenous peoples. Furthermore, the Papuan People's Assembly must pay attention to indigenous communities in carrying out its functions and authority.

The shifting cultivation system is an integral part of the local culture of the Papuan people in Indonesia, persisting to this day. This study investigates the relationship between vegetation abundance and soil chemical composition in former plantation lands of varying ages in Papua, Indonesia. Three sites with distinct fallow periods - 5 years (BK-5), 10 years (BK-10), and 15 years (BK-15) - were analyzed. Multivariate analysis was employed to model the combination of dominant vegetation density and soil physical and chemical characteristics. The results revealed that the BK-5 site exhibited poor soil quality, characterized by acidic pH and low organic carbon and nitrogen content. In contrast, the BK-10 and BK-15 sites demonstrated improved soil fertility. The multivariate analysis highlighted distinct differences in vegetation composition and soil nutrient parameters among the sites, with specific plant species associated with particular soil conditions. The study confirms that older former plantation lands tend to have higher soil fertility, suggesting that short fallow periods may be insufficient for optimal soil fertility restoration. These findings underscore the importance of considering the age of former plantation lands and the role of vegetation in shaping soil conditions. This research provides valuable insights into the ecological recovery of post-agricultural landscapes in Papua.

Rainfall variability in the Indo-Pacific warm pool arises from coupled interactions between the Intertropical Convergence Zone (ITCZ), the Asian-Australian monsoon, and large-scale ocean-atmosphere teleconnections. However, eastern Indonesia, particularly West Papua, remains underrepresented in climatological research. This study examined rainfall dynamics in Manokwari, West Papua, using 32 years (1991-2022) of BMKG station observations. Daily rainfall was aggregated into dekadal (10-day) totals to capture variability from intraseasonal to interannual timescales. We first characterized the annual and seasonal rainfall cycles using descriptive statistics and then diagnosed the dominant periodicities through Fast Fourier Transform (FFT) spectral analysis. To assess large-scale climate control, we quantified relationships between dekadal rainfall and key climate drivers, El Nino-Southern Oscillation (ENSO), the Indian Ocean Dipole (IOD), and the Australian monsoon, using correlation and partial correlation analyses to isolate each driver's independent association amid overlapping signals. Together, these diagnostics establish a robust dekadal climatology for an equatorial maritime region with limited prior analysis, supporting seasonal monitoring and climate-sensitive decision making. Beyond site-specific findings, this study introduces a replicable central-local co-production approach: standardized diagnostics developed centrally are paired with locally owned station data and locally contextualized interpretation by forecasters in the field. Applied across stations, this framework can strengthen the local analytical capacity in remote regions while improving the consistency and depth of Indonesia's climate information services for adaptation and operational forecasting, with ENSO emerging as the most robust large-scale modulator in both partial-correlation and phase-composite evidence.

This study develops and analyzes a predator-prey model within an extended Lotka-Volterra framework that incorporates a Holling Type II functional response and a threshold-based harvesting strategy. Two ecological regimes were considered: a non-harvesting regime, where population densities remain below prescribed thresholds, and a harvesting regime activated once these thresholds are exceeded. The analysis begins with the identification of equilibrium points, followed by a local stability analysis using the Jacobian matrix and eigenvalue criteria. In the absence of harvesting, three biologically meaningful equilibria are obtained: trivial, semitrivial, and interior equilibria representing prey-predator coexistence. The stability of these equilibria depends on key biological parameters, such as predator mortality and prey intraspecific competition. When threshold harvesting is introduced, the interior equilibrium can be stabilized if the harvesting thresholds are chosen appropriately. Numerical simulations confirm that threshold-based harvesting may stabilize dynamics that are unstable in the non-harvesting case, although this effect is highly sensitive to harvesting parameters and exploitation intensity. The results highlight the importance of well-designed threshold harvesting policies for sustainable ecosystem management and long-term prey-predator coexistence.