The flashover of insulator strings in heavily polluted areas is a prominent problem in the construction of transmission line projects. This research innovatively proposes an application scheme of ...vertically arranged F-type towers in a 500kV single-circuit AC transmission line project in a heavily polluted area in Shanxi Province. The scheme effectively reduces the risk of flashover caused by the accumulation of pollution in the jumper string, ensures the safe operation of the power grid, and greatly reduces the width of the line corridor is reduced, which has great advantages for passing through the industrial intensive area.
In leaves of birch (Betula pendula Roth), changes in the content of total sulphur and its inorganic and organic forms were determined in relation to the decreasing air-pollution load (SO₂) in the ...air-polluted Krusne hory mountains and the Decin sandstone highlands in 1995, 1998, 2001 and 2004. Results have shown that birch is able to use considerable amounts of sulphur taken through leaves from air-pollution load. Birch responds fast to changes in air-pollution load by fall in the content of total and inorganic forms of sulphur in leaves.
The aim of the present study was to clarify the relationship between urinary cadmium concentration (U-Cd) and total cadmium intake (T-Cd) based on individual data of Cd in urine. Morning urine ...specimens were collected from 198 persons (100 men with average age of 45.8 years and 98 women with average age of 50.7 years) living in the Kakehashi River basin in Ishikawa Prefecture, Japan. The method used to calculate T-Cd basically mirrored that used in our previous study. Correlation coefficients between U-Cd and T-Cd of 0.879 and 0.835 were obtained in men and women, respectively, with both values statistically significant. Therefore, T-Cd is confirmed to be a useful indicator for external Cd exposure even on the basis of individual data of U-Cd.
Analyses of birch leaves (Betula pendula Roth) sampled from trees in the air polluted Krusne hory mountains and Decin sandstone highlands were performed in 1995 and 1998. The results revealed a ...connection between reduction of air pollutants and overall decrease in sulphur and nitrogen content of the leaves. Simultaneously, in many stands an increase in calcium content and a decrease in contents of phosphorus, magnesium and potassium occurred. The content of microelements and non-nutrient elements did not change.PUBLICATION ABSTRACT
Seasonal Changes of Pigment Content and Antioxidant Capacity in Leaves of Alnus firma at Polluted Area Han, S.H. (Korea Forest Research Institute, Seoul, Republic of Korea); Lee, J.C. (Korea Forest Research Institute, Seoul, Republic of Korea); Oh, C.Y. (Korea Forest Research Institute, Seoul, Republic of Korea) ...
Korean Journal of Agricultural and Forest Meteorology,
(Jun 2006), Letnik:
8, Številka:
2
Journal Article
Recenzirano
To elucidate the relation of leaf development stage to the antioxidative function in leaves of Alnus firma Sieb. et Zucc. growing in polluted areas, we investigated seasonal changes of pigment ...content and antioxidant enzyme activities from January to June. In abandoned mine and industrial complex areas, antioxidant function against stress of trees was changed with leaf expansion, and antioxidant activity in leaves was highest in June. Among antioxidants, carotenoid, SOD and CAT were correlated with seasonal change.
Objective To establish a statistical diagnostic method to identify patients with Minamata disease (MD) considering factors of aging and sex, we analyzed the neurological findings in MD patients, ...inhabitants in a methylmercury polluted (MP) area, and inhabitants in a non-MP area. Materials and Methods We compared the neurological findings in MD patients and inhabitants aged more than 40 years in the non-MP area. Based on the different frequencies of the neurological signs in the two groups, we devised the following formula to calculate the predicting index for MD: predicting index = 1/(1+e-x)×100 (The value of x was calculated using the regression coefficients of each neurological finding obtained from logistic analysis. The index 100 indicated MD, and 0, non-MD). Results Using this method, we found that 100% of male and 98% of female patients with MD (95 cases) gave predicting indices higher than 95. Five percent of the aged inhabitants in the MP area (598 inhabitants) and 0.2% of those in the non-MP area (558 inhabitants) gave predicting indices of 50 or higher. Conclusion Our statistical diagnostic method for MD was useful in distinguishing MD patients from healthy elders based on their neurological findings. (Internal Medicine 41: 14-19, 2002)
We studied the crown fauna of caterpillars in the air-polluted area of the Krušné hory Mts, in tree stands consisting of substitute tree species Betula pendula Roth, Sorbus aucuparia L., Alnus ...alnobetula (Ehrh.), Picea pungens Englm., Pinus sylvestris L., Larix decidua Mill., Acer campestre L., Pinus sylvestris L., Fagus sylvatica L., Quercus robur L. and Q. rubra L. We used the method of shaking off the crown fauna of caterpillars. In the course of two years, larvae of 137 Lepidoptera species were registered, namely 123 species on broadleaved trees and 27 on conifers. Birch (63 species), alder (54) and mountain ash (38) showed the richest crown fauna. The proportion of caterpillars in the crown of beech (24), larch (18) and oak (25) was, however, poorer in species. Paraswammerdamia albicapitella (Scharf.) was found only on mountain ash, Aleimma loeflingianum (L.) on red oak and Ypsolopha ustella (Cl.) on sessile oak. The occurrence of caterpillars on Picea pungens is surprising because it represents a very unattractive species for phytophages and information is missing on its fauna from the area of the CR. Soerensens index of faunistic similarity was highest between birch and alder (51.3%) and the same level of similarity was noted between birch and mountain ash (31.7%) and beech (32.2%) and oak (26%).
Lo scopo di tale indagine è stato quello di valutare l’estensione e l’entità di contaminanti presenti nei suoli superficiali a suo tempo riscontrati mediante il Progetto Pavia. Il monitoraggio ...ambientale ha interessato un’area di circa 12 ettari situata nel comune di Carpiano. Complessivamente sono state identificate 33 aree di campionamento dove sono stati prelevati campioni di suolo sino alla profondità di 30 cm. In ciascun campione di suolo, dopo adeguati trattamenti, è stata valutata la concentrazione di metalli pesanti, metalloidi, macroelementi, sostanza organica, pH, densità apparente, contenuto d’acqua. In alcuni campioni, precisamente 11, si è analizzata la concentrazione di diossine e furani e si è approntato uno studio che ha visto l’utilizzo dei batteri e dei loro prodotti. Lo studio condotto attraverso l’uso dei batteri ha evidenziato anomalie in alcuni punti ad elevata contaminazione. I risultati analitici ottenuti hanno identificato la presenza di una importante contaminazione di metalli pesanti, metalloidi, diossine e furani che interessa un area di alcuni ettari. Tale livello di contaminazione, per la presenza di sostanza organica e per valori ridotti di acidità dei suoli stessi, potrà arrecare danni ingenti all’ambiente.
L'indagine conoscitiva realizzata 111 una area di 12,5 ettari, sita nel comune di Carpiano, ha permesso di ottenere uno schedario molto ampio di dati chimici e fisici quali metalli pesanti, ...metalloidi, nlacroelemnenti, radionuclidi, sostanza organica (carbonio totale e carbonio organico), diossine, furani, DDT, PCBs, pesticidi orgaclorurati, erbicidi, pH e tessitura. I parametri biologici hanno insistito sugli aspetti connessi alla Biodiversita e alla Bioindicazione come ad esempio i batteri e i funghi, l'utilizzo dei biosensoii e degli artropodi, l'analisi dell'attiviti enzinlatica e i lo~nbrichi sino alla coltivazione di piantine di trifoglio per valutare eventuali variazioni del patrimonio genetic0 (DNA) causate dai contaminanti presenti nel suolo. Le informazioni, nel loro concetto olistico, hanno permesso di osservare uno stato di compromissione del suolo e della stessa vita degli organismi vegetali e animali che sono presenti nel suolo. Tale malessere del suolo e presente a differenti livelli di intensita e copre buona parte dell'area oggetto di indagine.
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