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Golden pompano (Trachinotus blochii) is a carnivorous teleost cultured in the Asia-Pacific region. Fish culture in high densities and numbers results in disease outbreaks, causing huge economic losses. Here, we collected cultured golden pompanos from 2021 to 2022 and identified the pathogens isolated from the diseased fish. Out of a total of 64 clinical cases observed in both sea cages and fish ponds, it was found that Nocardia seriolae was the predominant pathogen (26%), followed by Lactococcus garvieae (13%). Trichodina spp. was the most prevalent parasite in sea cages and earthen ponds (21%), while Neobenedenia spp. was the primary parasitic pathogen (16%) in sea cages. Given these findings, further investigations were conducted, including antibiotic susceptibility and pathogenicity tests specific to N. seriolae in golden pompanos. Antibiotic susceptibility tests of N. seriolae revealed that all strains were susceptible to doxycycline, oxytetracycline, florfenicol and erythromycin but resistant to amoxicillin and ampicillin. Additionally, a pathogenicity assessment was carried out by administering an intraperitoneal injection of 0.1 mL containing 10 7  CFU of N. seriolae per fish. The mortality rates observed varied between 40% and 90%, with the P2 strain exhibiting the highest level of virulence, resulting in a cumulative mortality of 90%. Therefore, disease outbreaks in fish can be minimized by developing effective treatments and prevention methods., (© 2023 John Wiley & Sons Ltd.)

Background: The objective of this study was to investigate the impact on patient care quality of a positive, high-quality environment that is tailored to the practice of nursing. This study enabled nurses to show their professional skills and knowledge, which may help enhance job satisfaction. To date, little research has been done to assess the relationship between the nursing work environment and the job satisfaction of psychiatric nurses employed in acute wards of general hospitals., Purpose: This study was designed to explain the relationship between job satisfaction and the perceived indicators of a quality nursing work environment (QNWE) after adjusting for demographic characteristics and work characteristics., Methods: A cross-sectional correlational design was employed, and a stratified random sample of 185 psychiatric nurses (99% response rate) working in acute wards in Taiwan was surveyed in 2013. Nurses were asked to complete a self-administered questionnaire that included measures of perceived QNWE and job satisfaction and demographic variables., Results: A statistically significant, positive relationship was found between perceived indicators of QNWE and job satisfaction (r = .813, p < .001). In the hierarchical multiple linear regression model, for the subdimensions of QNWE, the variables "perceived indicators of professional specialization and teamwork" and "support and caring" showed a significant and positive association with job satisfaction, after adjusting for personal demographic characteristics., Conclusions/implications for Practice: Job satisfaction is related to the perception of nurses regarding their work environment. Therefore, nursing managers should improve workplace satisfaction by supporting and caring for nurses and creating better career development and teamwork opportunities for nurses through job training and planning.

The aim of this study was to chemically characterize the fine particulate matter (PM 2.5 ) at a subtropical forest in East Asia under the influences of anthropogenic and biogenic sources and a complex topographic setting. Four seasonal campaigns were conducted at the Xitou Experimental Forest in central Taiwan from the winter of 2013 to the autumn of 2014. The results indicated that the ambient levels and chemical features of PM 2.5 exhibited pronounced seasonal variations. Non-sea-salt sulfate (nss-SO 4 2- ) constituted the major component of PM 2.5 , followed by ammonium (NH 4 + ) and nitrate (NO 3 - ) during winter, summer and autumn. However, it was revealed that the mass fraction of NO 3 - increased to be comparable with that of nss-SO 4 2- in springtime. The mass contribution of secondary organic carbon (SOC) to PM 2.5 peaked in summer (13.2%), inferring the importance of enhanced photo-oxidation reactions in SOC formation. Diurnal variations of O 3 and SO 2 coincided with each other, suggesting the transport of aged pollutants from distant sources, whereas CO and NO x were shown to be under the influences of both local and regional sources. Notably high sulfur oxidation ratio (SOR) and nitrogen oxidation ratio (NOR) were observed, which were 0.93 ± 0.05 and 0.39 ± 0.20, respectively. Precursor gases (i.e. SO 2 and NO x ) could be converted to sulfate and nitrate during the transport by the uphill winds. Furthermore, due to the high relative humidity at Xitou, enhanced aqueous-phase and/or heterogeneous reactions could further contribute to the formation of sulfate and nitrate at the site. This study demonstrated the significant transport of urban pollutants to a subtropical forest by the mountain-valley circulations as well as the long-range transport from regional sources, whereas the implications of which for regional climate change necessitated further investigation., (Copyright © 2018 Elsevier Ltd. All rights reserved.)