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Girgibo N, Lü X, Hiltunen E, Peura P, Dai Z. The air temperature change effect on water quality in the Kvarken Archipelago area. Sci Total Environ 2023; 874:162599. [PMID: 36871730 DOI: 10.1016/j.scitotenv.2023.162599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 02/27/2023] [Accepted: 02/28/2023] [Indexed: 06/18/2023]
Abstract
The Kvarken Archipelago is Finland's World Heritage site designated by UNESCO. How climate change has affected the Kvaken Archipelago remains unclear. This study was conducted to investigate this issue by analyzing air temperature and water quality in this area. Here we use long-term historical data sets of 61 years from several monitoring stations. Water quality parameters included chlorophyll-a; total phosphorus; total nitrogen; coliform bacteria thermos tolerant; temperature; nitrate as nitrogen; nitrite-nitrate as nitrogen, and Secchi depth and correlations analysis was conducted to identify the most relevant parameters. Based on the correlation analysis of weather data and water quality parameters, air temperature showed a significant correlation with water temperature (Pearson's correlations = 0.89691, P < 0.0001). The air temperature increased in April (R2 (goodness-of-fit) = 0.2109 &P = 0.0009) and July (R2 = 0.1207 &P = 0.0155) which has indirectly increased the chlorophyll-a level (e.g. in June increasing slope = 0.39101, R2 = 0.4685, P < 0.0001) an indicator of phytoplankton growth and abundance in the water systems. The study concludes that there might be indirect effects of the likely increase in air temperature on water quality in the Kvarken Archipelago, in particular causing water temperature and chlorophyll-a concentration to increase at least in some months.
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Affiliation(s)
- N Girgibo
- Department of Energy Technology, School of Technology and Innovations, University of Vaasa, P.O.Box 700, FIN-65101 Vaasa, Finland.
| | - X Lü
- Department of Energy Technology, School of Technology and Innovations, University of Vaasa, P.O.Box 700, FIN-65101 Vaasa, Finland; Department of Civil Engineering, Aalto University, P.O.Box 12100, FIN-02130 Espoo, Finland.
| | - E Hiltunen
- Department of Energy Technology, School of Technology and Innovations, University of Vaasa, P.O.Box 700, FIN-65101 Vaasa, Finland.
| | - P Peura
- Department of Energy Technology, School of Technology and Innovations, University of Vaasa, P.O.Box 700, FIN-65101 Vaasa, Finland.
| | - Z Dai
- College of Construction Engineering, Jilin University, Changchun 130026, China.
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Zhu LD, Takala J, Hiltunen E, Wang ZM. Recycling harvest water to cultivate Chlorella zofingiensis under nutrient limitation for biodiesel production. Bioresour Technol 2013; 144:14-20. [PMID: 23850821 DOI: 10.1016/j.biortech.2013.06.061] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Revised: 06/15/2013] [Accepted: 06/19/2013] [Indexed: 05/06/2023]
Abstract
Harvest water recycling for Chlorella zofingiensis re-cultivation under nutrient limitation was investigated. Using 100% harvest water, four cultures were prepared: Full medium, P-limited medium, N-limited medium and N- and P-limited medium, while another full medium was also prepared using 50% harvest water. The results showed that the specific growth rate and biomass productivity ranged from 0.289 to 0.403 day(-1) and 86.30 to 266.66 mg L(-1) day(-1), respectively. Nutrient-limited cultures witnessed much higher lipid content (41.21-46.21% of dry weight) than nutrient-full cultures (26% of dry weight). The N- and P-limited medium observed the highest FAME yield at 10.95% of dry weight, while the N-limited culture and P-limited culture shared the highest biodiesel productivity at 20.66 and 19.91 mg L(-1) day(-1), respectively. The experiment on harvest water recycling times demonstrated that 100% of the harvest water could be recycled twice with the addition of sufficient nutrients.
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Affiliation(s)
- L D Zhu
- Faculty of Technology, University of Vaasa and Vaasa Energy Institute, FI-65101 Vaasa, Finland.
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Anttila M, Hiltunen E, Tammi R, Heinonen S, Yliskoski M, Juhola M, Kosma VM, Tammi M. The serum hyaluronan is a potential marker for epithelial ovarian cancer. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.5066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- M. Anttila
- Kuopio Univ Hosp, Kuopio, Finland; Univ of Kuopio, Kuopio, Finland; Jyväskylä Central Hosp, Jyväskylä, Finland
| | - E. Hiltunen
- Kuopio Univ Hosp, Kuopio, Finland; Univ of Kuopio, Kuopio, Finland; Jyväskylä Central Hosp, Jyväskylä, Finland
| | - R. Tammi
- Kuopio Univ Hosp, Kuopio, Finland; Univ of Kuopio, Kuopio, Finland; Jyväskylä Central Hosp, Jyväskylä, Finland
| | - S. Heinonen
- Kuopio Univ Hosp, Kuopio, Finland; Univ of Kuopio, Kuopio, Finland; Jyväskylä Central Hosp, Jyväskylä, Finland
| | - M. Yliskoski
- Kuopio Univ Hosp, Kuopio, Finland; Univ of Kuopio, Kuopio, Finland; Jyväskylä Central Hosp, Jyväskylä, Finland
| | - M. Juhola
- Kuopio Univ Hosp, Kuopio, Finland; Univ of Kuopio, Kuopio, Finland; Jyväskylä Central Hosp, Jyväskylä, Finland
| | - V.-M. Kosma
- Kuopio Univ Hosp, Kuopio, Finland; Univ of Kuopio, Kuopio, Finland; Jyväskylä Central Hosp, Jyväskylä, Finland
| | - M. Tammi
- Kuopio Univ Hosp, Kuopio, Finland; Univ of Kuopio, Kuopio, Finland; Jyväskylä Central Hosp, Jyväskylä, Finland
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Abstract
The purpose of this study was to identify high frequency-treatment priority nursing diagnoses in critical care nursing using survey research methods. Through a mailed survey the prevalence of 135 nursing diagnoses from the NANDA Diagnostic Taxonomy and other diagnoses was rated by a national, random sample of 678 critical care nurses. Six important diagnostic areas were: sleep-rest, activity, nutritional-metabolic, cognitive-perceptual, self-perception (mood state), and health management (risk) patterns. Twenty diagnoses were rated as nearly always or frequently present in their practice by 70% or more of the nurses. Findings can be used to focus clinical studies of the highly prevalent diagnoses.
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Abstract
Literature on clinical judgment is discussed as a background for proposing an integrated model of diagnostic-therapeutic and ethical reasoning. Information processing and nursing process components related to problem identification and problem solving serve as a framework for the integration of the two domains of clinical reasoning. Discussion focuses on the integration of process components, identification of areas of research, and the use of the model in education and practice.
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Affiliation(s)
- M Gordon
- Boston College School of Nursing, Chestnut Hill, Massachusetts
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Hiltunen E, Tamminen M. On the crystallization of FeP metallic glasses. Acta Crystallogr A 1984. [DOI: 10.1107/s0108767384094009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
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