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Smoking and obesity are major global public health concerns, each linked to various adverse health effects. This study aims to explore the complex relationship between smoking and obesity among adult males in North Sulawesi Province, Indonesia. Using data from the 2018 Indonesia Basic Health Survey, we conducted a cross-sectional study involving 4,994 male participants aged 18 years and older. Smoking status was classified as regular, irregular, or former smokers based on the subjects’ habits in the previous month. Multinomial logistic regression, analysis of variance, and chi-square tests were applied to examine the association between smoking and obesity. The results showed that ex-smokers had a higher likelihood of obesity compared to current smokers, with an adjusted relative risk ratio (RRR) of 1.63 (95% CI: 1.18–2.24). Irregular smokers were also more likely to be obese than regular smokers, with an adjusted RRR of 1.42 (95% CI: 1.11–1.88). However, no statistically significant association was found between smoking and being overweight. A positive association was observed between smoking and obesity, indicating that former smokers may face an increased risk of becoming obese.

Stigma on abortion has limited the study of abortion in several countries, including Indonesia. Understanding factors of abortion can improve programs and policies aimed at increasing women’s sexual and reproductive health and rights, especially abortion. This study aims to draw a picture of the behavioral determinants of women who had abortions. This cross-sectional study utilized data from a community-based survey of 8,969 randomly selected women aged 15-49 in six provinces in Java. Data were collected via an interviewer-administered structured questionnaire, collecting information on socio-demographic characteristics, experience using contraception, pregnancy, abortion, partner violence, and other issues related to reproductive health. Structural Equation Modeling Analysis was used to get an overview of the structural determinants of women who had abortions based on the concept of Integrated Behavioral Model Theory. Model fit with RMSEA value = 0.037, CFI = 0.924, and SRMR =0.048. Intention shows the most significant direct effect on abortion. The experience of physical and sexual violence, the attitude toward the impact of ending pregnancy, and the lack of contraception knowledge have a direct effect on increasing the intention to have an abortion.

Fermentation is one of the main processes influencing cacao beans’ quality. Proper post-harvest cacao processing can affect the quality of cacao beans. Spontaneous fermentation of cacao beans is carried out carefully for 5 d to 7 d, characterized by a series of activities of certain microorganisms from three groups of microorganisms: yeasts, lactic acid, and acetic acid. Yeast aims to liquefy the pulp, while lactic acid and acetic acid bacteria play a role in raising and lowering the pH of cacao beans during fermentation. The activity of microorganisms affects the formation of aromatic compounds in fermented cacao beans. During the fermentation process, there is a change in pH and an increase in temperature in the seed heap; this creates conditions that cause changes in the seed’s structure at the cellular level and the metabolites present in the seeds. Leucine, alanine, phenylalanine, and tyrosine are precursors contributing to cacao and chocolate aroma formation. The post-harvest processes affect the yield of cacao beans that will be used in the chocolate industry. Each process must be considered to produce high-quality fermented cacao beans.

Mosquitoes are insects that are detrimental to human health because they act as disease vectors, such as dengue fever. Surabaya was known for its high risk of dengue fever. This study aims to describe the diversity of mosquitoes and breeding site distribution in Eastern Surabaya. The study was conducted in 2021 during the end of the wet season in different habitat types in the eastern Surabaya (residential, city park, bamboo forest, and mangrove forest). Eggs, larval, and adult-stage mosquitoes were collected and stored in the Entomology Laboratory for morphological identification. Adult mosquito was collected by using a sweep net and light trap method, while the larva and egg were collected incidentally from breeding sites. The diversity of mosquitoes in the Eastern Surabaya was determined by using the Shannon-Wiener diversity index (H’), dominance, species richness (R), and breeding site distribution. Eleven species were obtained in this study, namely Aedes aegypti, Aedes albopictus, Aedes annandalei, Anopheles subpictus, Anopheles vagus, Anopheles barbirostris, Culex bitaeniorhynchus, Culex pseudovishnui, Culex quinquefasciatus, Mansonia uniformis, and Malaya genurostris. The H’ index of 1.63 indicates the mosquito community was at a moderate level. The R-value of 1.56 indicates a low level of mosquito species richness. The most abundant species was Cx. quinquefasciatus (37.2%). Most of the breeding sites with mosquito larval infested were found in open areas (79.3%). These numbers mean the total of individuals of each species tends to be low and its dominance shows no effect on other species. The data on mosquito species and their distribution in Surabaya could be used as base information for vector control strategies.

The invasion of nipah (Nypa fructicans) occurred in the Air Telang Protected Forest (ATPF), Indonesia, as a result of mangrove forest degradation caused by anthropogenic activities in the area. This research aims to analyze the distribution of nipah populations in the ATPF and at the same time describe the benefits and potential of nipah both in the ATPF and in various regions in the world. The data collected in this research consists of two types, namely primary data and secondary data. Primary data was obtained through field surveys in the ATPF area, while secondary data was obtained through literature studies of relevant research results. Nipah populations can be widely distributed in degraded mangrove forest ecosystems and invade areas outside their natural habitat because they have high adaptability to the environment, high seed productivity and effective and adaptive seed distribution. Even though the spread of nipah in the ecosystem can hinder the succession of mangrove forests, it turns out that nipah has great benefits for the community and contains important compounds that are useful for making foods, drinks and medicine..

The addition of silicon carbide (SiC) as a reinforce in a composite can improve mechanical properties. In this study aluminium ADC 12 (Al-Si-Aluminium Alloy) is treated with an addition of SiC varied from (1; 1.5; 2; 2.5 to 3) vf% and mixed with 0.18 wt% Sr to change the morphology of the silicone eutectic phase and 0.15 wt% titanium boron (TiB) was added as a grain refiner as well as the addition of 5 wt% magnesium (Mg) to increase the wettability. All materials were fabricated by stir cast method. This research is conducted to obtain the candidate material for application in train's brake shoe and bearing. This kind of usage requires high mechanical properties such as wear resistance, thermal resistance, good elastic modulus and lightweight. The composites were characterised by both mechanical properties and microstructure. The result shows that there is an increase in the mechanical properties of aluminium ADC 12 /SiC composite compared to unreinforced with the value of 144 MPa of strength, 53 HRB of hardness, and 0.0049 mm3 m–1 of wear rate. As a result, the higher addition of the SiC results in the better mechanical properties for the composite.