Factors Related to Rabies Prevention Measures in Nangapanda Community Health Center, Ende, East Nusa Tenggara

Background: Rabies is an acute infectious disease of the central nervous system caused by the rabies virus and transmitted through the bites of Rabies Transmitting Animals (HPR), especially dogs. The bite of an unvaccinated rabies-infecting animal is the cause of most cases of rabies which can lead to death. This study aimed to determine the factors related with the prevention of rabies in the community in the working area of the Nangapanda Community Health Center, Ende, East Nusa Tenggara. Subjects and Method: This cross-sectional study was conducted in the working area of the Nangapanda Public Health Center, Ende Regency from August to September, 2022. A total of 116 families were selected for this study. The dependent variable is rabies prevention measures and the independent variable is knowledge and attitude. Data were analyzed using the chi-square test. Results: Good knowledge (OR= 19.25; 95% CI= 5.94 to 62.36; p<0.001), and positive attitude (OR= 0.11; 95% CI= 0.02 to 0.53; p= 0.001) are associated with rabies prevention measures. Conclusion: There is a significant relationship between knowledge and attitude toward rabies disease prevention measures. Keywords: rabies, action, prevention. Correspondence: Yuniarti Prihartini. Study Program in Public Health, Faculty of Public Health, Universitas Nusa Cendana. Jl. Lasiana, Klp. Lima, Kupang, East Nusa Tenggara. Email: [email protected]. Mobile: +62 821-8780-4312. Journal of Health Promotion and Behavior (2023), 08(02): 78-84 DOI: https://doi.org/10.26911/thejhpb.2023.08.02.0

Impacts of Atmospheric Nitrogen Deposition and Coastal Nitrogen Fluxes on Oxygen Concentrations in Chesapeake Bay

Although rivers are the primary source of dissolved inorganic nitrogen (DIN) inputs to the Chesapeake Bay, direct atmospheric DIN deposition and coastal DIN concentrations on the continental shelf can also significantly influence hypoxia; however, the relative impact of these additional sources of DIN on Chesapeake Bay hypoxia has not previously been quantified. In this study, the estuarine‐carbon‐biogeochemistry model embedded in the Regional‐Ocean‐Modeling‐System (ChesROMS‐ECB) is used to examine the relative impact of these three DIN sources. Model simulations highlight that DIN from the atmosphere has roughly the same impact on hypoxia as the same gram‐for‐gram change in riverine DIN loading, although their spatial and temporal distributions are distinct. DIN concentrations on the continental shelf have a similar overall impact on hypoxia as DIN from the atmosphere (~0.2 mg L−1); however, atmospheric DIN impacts dissolved oxygen (DO) primarily via the decomposition of autochthonous organic matter, whereas coastal DIN concentrations primarily impact DO via the decomposition of allochthonous organic matter entering the Bay mouth from the shelf. The impacts of atmospheric DIN deposition and coastal DIN concentrations on hypoxia are greatest in summer and occur farther downstream (southern mesohaline) in wet years than in dry years (northern mesohaline). Integrated analyses of the relative contributions of all three DIN sources on summer bottom DO indicate that impacts of atmospheric deposition are largest in the eastern mesohaline shoals, riverine DIN has dominant impacts in the largest tributaries and the oligohaline Bay, while coastal DIN concentrations are most influential in the polyhaline region

Responses of marine benthic microalgae to elevated CO<inf>2</inf>

Increasing anthropogenic CO2 emissions to the atmosphere are causing a rise in pCO2 concentrations in the ocean surface and lowering pH. To predict the effects of these changes, we need to improve our understanding of the responses of marine primary producers since these drive biogeochemical cycles and profoundly affect the structure and function of benthic habitats. The effects of increasing CO2 levels on the colonisation of artificial substrata by microalgal assemblages (periphyton) were examined across a CO2 gradient off the volcanic island of Vulcano (NE Sicily). We show that periphyton communities altered significantly as CO2 concentrations increased. CO2 enrichment caused significant increases in chlorophyll a concentrations and in diatom abundance although we did not detect any changes in cyanobacteria. SEM analysis revealed major shifts in diatom assemblage composition as CO2 levels increased. The responses of benthic microalgae to rising anthropogenic CO2 emissions are likely to have significant ecological ramifications for coastal systems. © 2011 Springer-Verlag

Juvenile king scallop, Pecten maximus, is potentially tolerant to low levels of ocean acidification when food is unrestricted.

The decline in ocean water pH and changes in carbonate saturation states through anthropogenically mediated increases in atmospheric CO2 levels may pose a hazard to marine organisms. This may be particularly acute for those species reliant on calcareous structures like shells and exoskeletons. This is of particular concern in the case of valuable commercially exploited species such as the king scallop, Pecten maximus. In this study we investigated the effects on oxygen consumption, clearance rates and cellular turnover in juvenile P. maximus following 3 months laboratory exposure to four pCO2 treatments (290, 380, 750 and 1140 µatm). None of the exposure levels were found to have significant effect on the clearance rates, respiration rates, condition index or cellular turnover (RNA: DNA) of individuals. While it is clear that some life stages of marine bivalves appear susceptible to future levels of ocean acidification, particularly under food limiting conditions, the results from this study suggest that where food is in abundance, bivalves like juvenile P. maximus may display a tolerance to limited changes in seawater chemistry

RADIOLABELED BUTYL TIN STUDIES IN THE MERL ENCLOSED ECOSYSTEMS.

Radiolabeled tributyltin was introduced into an enclosed ecosystem in which most of the processes occurring in adjacent Narragansett Bay also can be found. The tributyl tin was initially removed from the water column with a half-life of 3. 5 days. A partitioning coefficient to suspended sediments of 4 multiplied by 10**4 was found for tributyl tin