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排序方式: 共有176条查询结果,搜索用时 15 毫秒
171.
172.
Djermanovic Mirjana Baralic Ivana Pejic Snezana 《Biological trace element research》2020,194(2):545-551
Biological Trace Element Research - The mercury concentration was quantified in frozen and canned fish found in the market of the Republic of Srpska, Bosnia and Herzegovina. Using the method of... 相似文献
173.
Vesna Rajkovic Renata Kovac Ivana Koledin Milica Matavulj 《Central European Journal of Biology》2012,7(1):25-32
Atrazine is a commonly used pesticide in the US and the non-EU countries. It is classified as an endocrine-disrupting chemical
and is well-known for its reproductive toxicity in mammals and lower vertebrates. The study on atrazine effects on thyroid
mast cells was performed on juvenile/peripubertal and adult male Wistar rats orally gavaged with atrazine at doses of 50 mg/kg
of body weight (bw) or 200 mg/kg bw. In order to visualize the mast cell population within the thyroid gland, a histochemical
staining method of toluidine blue was used. The results of the histological evaluation demonstrated a prominent increase in
mast cell degranulation in both age groups and at both atrazine doses. According to the stereological analysis, a statistically
significant decrease in the mast cell volume density in the young rats exposed to a higher dose of atrazine was found when
compared to the corresponding control. The numerical density of mast cells significantly decreased in a higher-dose atrazine
treated adults in comparison to the control. The obtained data suggest that atrazine-affected mast cells would probably have
a consequent influence on thyroid follicular cells and/or thyroid microvasculature via paracrine action of released mediators, but might also be involved in already suggested thyroid cancerogenesis. 相似文献
174.
Toxic Metal and Trace Element Concentrations in Blood and Outcome of In Vitro Fertilization in Women
Tulić Lidija Vidaković Snezana Tulić Ivan Ćurčić Marijana Bulat Zorica 《Biological trace element research》2019,188(2):284-294
Biological Trace Element Research - The aim of this study was to investigate the association of trace element and toxic metal concentrations in blood and the outcome of in vitro fertilization... 相似文献
175.
Natural vs. mariculture induced variability in nutrients and plankton in the eastern Mediterranean 总被引:1,自引:0,他引:1
Paraskevi Pitta Ioannis Karakassis Manolis Tsapakis Snezana Zivanovic 《Hydrobiologia》1998,391(1-3):179-192
The water column in three Mediterranean fish farms was investigated in terms of physical, chemical and biological characteristics. A significant increase in concentrations of phosphate and ammonium was detected within the cages over the control site in one of the farms but without any significant effect on chlorophyll concentration. Analysis of variation within the data set identified location and season as the major factors of variability in most of the variables examined except phosphate and ammonium for which variability induced by fish farming seemed to be of major importance. Plankton abundance for the major taxonomic groups (diatoms, flagellates, dinoflagellates and ciliates), microplankton species diversity and community structure were also determined by the effects of season and location rather than by fish farming. 相似文献
176.
Aleksandar D. Jurisic Aleksandra P. Petrovic Dragana V. Rajkovic Slobodan Dj Nicin 《Experimental & applied acarology》2010,52(1):101-109
In recent years, in urban areas of Novi Sad, unique ecological conditions, specific floristic and faunistic composition and
poor habits of citizens in sense of public health, facilitate the development and maintenance of ticks. Regarding the importance
of ticks as vectors of severe human and animal diseases, complex and detailed studies are conducted with an aim to find the
most efficient methods for tick control. Two tick species, Ixodes ricinus and Dermacentor marginatus, were identified during a 3-year period on the territory of Municipality of Novi Sad. During 2006, the efficacy of the pyrethroid
lambda-cyhalothrin in tick control varied from 60.7 to 100%. The highest efficacy recorded in 2007 was 92.3%. The efficacy
of lambda-cyhalothrin in 2008 varied from 39.1 to 100%. Lambda-cyhalothrin showed high efficacy in tick control at localities
which were improved before the application (mowed, litter removed, abundance control and euthanasia of abandoned cats and
dogs). The results of this research indicate that lambda-cyhalothrin has a toxic effect on ticks and could be used as efficient
acaricide for tick control, although its efficacy depends on formulation, terrain features and methods of application. 相似文献