scholarly journals Structure and ecological peculiarities of algoflora of rock-forming soils of coal dumps in Donetsk region

2013 ◽  
pp. 379-387
Author(s):  
Mykola Chajka ◽  
Iryna Mal’tseva
Keyword(s):  
Key Words ◽  
Coal Mining ◽  
Soil Algae ◽  
Summer Period ◽  
Spring Period

As a result of the investigation of algogroups of coal-mining workings of mine administration “Zahidne” 44 species of algal from five departments (Cyanophyta, Chlorophyta, Bacillariophyta, Xanthophyta, Eustigmatophyta) were revealed. The coefficients of mesophility and xerophylity are calculated. The general spectrum of vital forms of algae species in spring period is represented by formula Ch14B5X3H2C2P1 (27), in summer period – Ch9P8B7X4H4C2V1CF1 (36). Key words: coal dump, soil algae, vital forms.

scholarly journals PHYTOPLANKTON OF ŠASKO LAKE AND THE FIRST RECORD OF INVASIVE TOXIN-PRODUCING CYANOBACTERIUM CYLINDROSPERMOPSIS RACIBORSKII (WOLOSZYNSKA) SEENAYYA ET SUBBA RAJU, 1972  IN MONTENEGRO

2018 ◽  
Vol 16 ◽  
pp. 114-123
Author(s):  
Jelena Rakočević
Keyword(s):  
Phytoplankton Community ◽  
Nutrient Loading ◽  
First Record ◽  
Cylindrospermopsis Raciborskii ◽  
Summer Period ◽  
Small Surface ◽  
Spring Period ◽  
Toxic Cyanobacteria ◽  
First Time ◽  
External Nutrient

Shallow lakes are specific aquatic systems sensitive to eutrophication, due to the constant exchange of nutrients between sediments and water column and less capacity to buffer external nutrient loading. The aim of this work was to analyze phytoplankton community in Šasko Lake after the gap of almost 40 years. A total of 88 phytoplankton taxa belonging to seven divisions were identified in Šasko Lake during the warm period of year (spring and summer) in 2016. Phytoplankton composition and abundance didn’t show spatial heterogeneity, due to the small surface of the lake and wind action, but seasonal differences were observed. Spring period characterized numerical dominance of B and E functional groups of phytoplankton (codons), while summer period characterized higher species diversity and abundance in comparison to spring and dominance of B, P, Sn and H1 codons. Results showed significant increase in phytoplankton abundance (for about two orders of magnitude) as well as the increased percentage share of cyanobacteria in comparison to former investigations. Besides, for the first time, invasive, potentially toxic cyanobacteria Cylindrospermopsis raciborskii (Woloszynska) Seenaya & Subba-Raju was recorded in Montenegro.

scholarly journals A Procedure for Oxytocin Measurement in Hair of Pig: Analytical Validation and a Pilot Application

Biology ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 527
Author(s):  
Marina López-Arjona ◽  
Fernando Tecles ◽  
Sandra V. Mateo ◽  
María Dolores Contreras-Aguilar ◽  
Silvia Martínez-Miró ◽  
...  
Keyword(s):  
Pilot Study ◽  
Reproductive Cycle ◽  
Biological Species ◽  
Future Research ◽  
Analytical Validation ◽  
Summer Period ◽  
First Report ◽  
Spring Period ◽  
Sample Extraction ◽  
Highly Sensitive

There is growing interest in oxytocin as a biomarker of stress and welfare. The objective of this study was to develop and validate a procedure based on a highly sensitive immunoassay to measure oxytocin in the hair of pigs. In addition, a pilot study to apply this procedure to evaluate possible changes in concentrations of oxytocin in hair during the reproductive cycle of pigs at different periods of the year was conducted. This procedure used methanol for sample extraction, since it offered better recoveries than acetonitrile, and the immunoassay developed was precise and accurate for the quantification of the oxytocin in the hair. When this procedure was applied to hair collected at different times of the reproductive cycle and season, higher values were found at days 23 and 59 after farrowing in the winter–spring period. In addition, higher oxytocin values in the spring–summer period were found in hair collected 5 days before farrowing compared to winter–spring. Oxytocin in hair showed moderate and low correlations with cortisone and cortisol in hair, respectively. This study represents the first report in which oxytocin was measured in hair and could open new lines for future research about the measurement of oxytocin in pigs and other biological species as a biomarker of stress.

scholarly journals Evaluation of quality measurement of Olomouc cake of cheese (Olomoucké tvarůžky) during ripening

2012 ◽  
Vol 60 (5) ◽  
pp. 205-210 ◽  
Author(s):  
Daniela Strnadová ◽  
Hana Konečná ◽  
Miroslav Jůzl
Keyword(s):  
Chemical Composition ◽  
Chemical Analysis ◽  
Manufacturing Process ◽  
Dry Matter ◽  
Quality Measurement ◽  
Titratable Acidity ◽  
Summer Period ◽  
Brevibacterium Linens ◽  
Spring Period

Olomouc cake of cheese (Olomoucké tvarůžky) is smear-ripened cheese, which is produced from sour industrial curd. Brevibacterium linens, which are added during the production process, are reproducing and make gold-yellow smear cover. The aim of this work was to assess the chemical analysis of the quality of Olomouc cake of cheese. Changes in chemical composition were evaluated during different stages of production and at the same time it was detected whether changes in chemical composition during the manufacturing process are same in spring as well as in summer, without statistically significant differences. Dry matter of Olomouc cake of cheese was ranged from 35 % to 39 %. The increase of dry matter during production is evident, but these changes were in the most cases not statistically signifiant (P > 0.05). The value of titratable acidity of the cheese considerably changes during the manufacturing process, it has a decreasing tendency. Titratable acidity of cheese after shaping was 106.64 (136.12) SH and at the end of life it was 49.91 (65.06) SH. These changes were very highly statistically significant (P < 0.001). Increasing the dry matter of cheese is also proportionatelly increase content of salt in cheese, although this changes are not statistically significant (P > 0.05) in cheese from summer period. Content of salt is increased from 5.30 % to 5.98 %, respectively 6.10 %. In spring period the oposite changes in most cases occured (P < 0.001), it is increased from 4.27 % to 6.20 %, respectively 6.94 %. When the chemical composition of the cheese in spring and in summer period is compared, there are no significant changes (P > 0.05).

Seasonal changes in photosynthetic rate and pigment content in two populations of the monotypic Balkan serpentine endemic Halacsya sendtneri

2015 ◽  
Vol 63 (2) ◽  
pp. 167 ◽  
Author(s):  
Dražen D. Vicić ◽  
Milovan M. Stoiljković ◽  
Marko S. Sabovljević ◽  
Branka M. Stevanović
Keyword(s):  
Photosynthetic Rate ◽  
Photosynthetic Activity ◽  
Balkan Peninsula ◽  
Summer Period ◽  
Spring Period ◽  
Leaf Chlorophyll ◽  
Steep Decline ◽  
Microclimate Conditions ◽  
Two Populations

Halacsya sendtneri (Boiss.) Dörfl. is an obligate serpentine palaeoendemic of the Balkan Peninsula. It is able to maintain a favourable magnesium : calcium (Mg : Ca) ratio throughout its root and shoot, and grow in serpentine habitats with different microclimate conditions. Seasonal variation of leaf chlorophyll and carotenoid contents showed a steep decline right after the spring period, which was most probably caused by the drought imposed on the plants on the shallow serpentine soil. However, the in situ photosynthetic rate remained stable throughout the spring and summer period. Prolonged photosynthetic activity enables this species an investment into root development and sustainable survival in the harsh soils of the habitats it occupies.

scholarly journals Effect of greenhouse conditions on Zn, Fe and Cu content in tomato fruits

2005 ◽  
Vol 50 (2) ◽  
pp. 101-105
Author(s):  
Vukasin Bjelic ◽  
Djordje Moravcevic ◽  
Damir Beatovic
Keyword(s):  
Chemical Composition ◽  
Iron Content ◽  
Copper Content ◽  
Field Trials ◽  
Field Conditions ◽  
Summer Period ◽  
Tomato Fruits ◽  
Cu Content ◽  
Spring Period ◽  
Ripe Tomato

Tomato investigations were carried out under greenhouse and field conditions. The aim was to determine the extent to which greenhouse conditions influence the chemical composition of tomato fruits. Plants grown under field conditions were used as the control. Tomato trials were performed during different periods. Greenhouse trials were carried out in the winter and the spring period (January-June), and field trials in the spring and the summer period (May-September). Zinc (Zn), iron (Fe) and copper (Cu) content was established in ripe tomato fruits. Greenhouse conditions were found to effect zinc and iron content in tomato, whereas copper content was unaltered.

Composition, seasonality and distribution of Ichthyoplankton in Port Phillip Bay, Victoria

1986 ◽  
Vol 37 (4) ◽  
pp. 507 ◽  
Author(s):  
GP Jenkins
Keyword(s):  
Central Region ◽  
Fish Larvae ◽  
Northern Region ◽  
Juvenile Stage ◽  
Larval Abundance ◽  
Summer Period ◽  
Early Juvenile ◽  
Positive Correlation ◽  
Spring Period ◽  
Early Juvenile Stage

Plankton samples were collected on monthly cruises over 1 year from May 1983 to April 1984, to investigate composition, seasonality and distribution of ichthyoplankton in Port Phillip Bay. Fish egg numbers were dominated by the southern anchovy, Engraulis australis; clupeoids and gobiids were co-dominant larvae. Other common fish larvae were the cobbler, Gymnapistes marmoratus, greenback flounder, Rhombosolea tapirina, and callionymids. Egg abundances were highest in summer, resulting mainly from high abundances of E. australis eggs. Abundances of fish larvae were highest in summer and winter-spring. The summer period was dominated by clupeoid and gobiid larvae, together with callionymids, monacanthids, platycephalids, the blenny, Pictiblennius tasmanianus, the snapper, Chrysophrys auratus, and a number of rarer species. The winter-spring period was almost entirely dominated by four taxa: gobiids, G. marmoratus, R. taplrina and the long-snouted flounder, Ammotretis rostratus. Eggs of E. australis, Sardinops neopilchardus and A. rostratus, and larvae of all common taxa except monacanthids and C. auratus, were distributed widely throughout the bay. Abundance of eggs of E. australis at the mouth of the bay was significantly lower than within the bay proper. Larvae of P. tasrnanianus were significantly more abundant in the shallow, northern region of the bay than in the deeper, central region. Most monacanthid larvae were collected towards the mouth of the bay, whereas C. auratus larvae were only collected at stations well inside the bay. Analysis of winter samples revealed multispecies patchiness of fish larvae, and a positive correlation between larval abundance and volume of net zooplankton. Although juveniles of King George whiting, Sillaginodes punctatus, and yellow-eyed mullet, Aldrichetra forsteri, are abundant in Port Phillip Bay, larvae were virtually absent. It is proposed that these species spawn offshore, and that immigration into the bay occurs at a late larval-early juvenile stage not detectable by plankton sampling.

scholarly journals Drought Spells and Their Impact on the Growth of Young Plantations Established with the Containerized Planting Stock

2018 ◽  
Vol 66 (1) ◽  
pp. 89-99 ◽  
Author(s):  
Oldřich Mauer ◽  
Martin Rozmánek ◽  
Kateřina Houšková
Keyword(s):  
Czech Republic ◽  
European Beech ◽  
First Year ◽  
Good Growth ◽  
Summer Period ◽  
Planting Stock ◽  
The Czech Republic ◽  
Clear Cut ◽  
Spring Period ◽  
Root Collar

In 2013–2016, the growth and post – planting losses were monitored of bare – rooted and containerized planting stock of European beech, Norway spruce and Douglas fir together with the course of weather in seven regions of the Czech Republic, most endangered by drought. Precipitation deficits occurred especially in the spring period of 2015 and in the summer period of 2016, significant drought spells being recorded also in the summer periods of years 2013 and 2015. If there is a normal weather after planting, the containerized planting stock exhibits better growth. If the planting is followed by severe spells of drought, both the bare–rooted and the containerized planting stock dies, the containerized planting stock more so. The containerized planting stock responds worse to repeated drought spells. Drought spells are at all times better endured by the containerized planting stock with the large root balls, root ball coverage and strong root collar. Coverage of clear–cut areas is significantly affected by the success of regeneration, which depends on the used type of planting stock, as well as by the spells of drought. Good growth in the first year after planting does not guarantee the success of regeneration, particularly if the containerized planting stock is concerned.

Change of Mood in Relation with The Seasons

2016 ◽  
Vol 33 (S1) ◽  
pp. S441-S442
Author(s):  
R. de la Mata Hidalgo ◽  
M. de la Mata Hidalgo ◽  
I. Valriberas Herrera ◽  
O.E. Ana ◽  
L. Al Chaal Marcos ◽  
...  
Keyword(s):  
Emergency Service ◽  
Significant Proportion ◽  
Summer Period ◽  
Emergency Situations ◽  
Spring Period ◽  
Different Seasons ◽  
Medical Emergencies ◽  
Competing Interest ◽  
Age Range ◽  
Second Period

IntroductionEmergency situations related to mental disorders represent a significant proportion of all medical emergencies. Over the last years we have been witness to an upturn in the incidence of psychiatry emergency service because to change of mood.ObjectiveTo determine the profile of the patient who requires psychiatric attention with changing of mood in our area in different seasons.MethodologyThis is a prevalence and prospective study in which the dependent variable is taken as change of mood and we also use three more independent variables that are age sex and seasonality. The seasonality (spring period and summer period) will be at the same time the form of divided the population in two groups to compare.ResultsOut of all the consultations for changing of mood in the emergency service during the first period (113 patients), 34% were men and 66% were women. The age range of 36–50 years was more frequent for women and the age range of 51–65 years was more frequent for men. in the second period (with 162 patients), 137 women (86%) and 25 men (14%). in this case, the most common age range was 36–50 years, both for women and for men.ConclusionsThe epidemiological and clinical characteristics of patients with changing of mood assessed by the emergency service are described from a naturalistic approach.Which Chi2 we will discover if the population who has been taken between woman and man is significant and with the median, we will also determine if the age ranges are enough significant to confirm our hypothesis.Disclosure of interestThe authors have not supplied their declaration of competing interest.

scholarly journals Effect of heat stress on milk production in dairy cows

2011 ◽  
Vol 27 (3) ◽  
pp. 1017-1023 ◽  
Author(s):  
M. Joksimovic-Todorovic ◽  
V. Davidovic ◽  
S. Hristov ◽  
B. Stankovic
Keyword(s):  
Heat Stress ◽  
Dairy Cows ◽  
Milk Production ◽  
Milk Fat ◽  
Lactation Period ◽  
Summer Period ◽  
Spring Period ◽  
Lactation Curve ◽  
Level Of Significance ◽  
June July

Heat stress in dairy cows is caused by a combination of environmental factors (temperature, relative humidity, solar radiation and air movement). Continual genetic selectin for greater performance results to increased sensitivity to heat stress. It was one of the reasons why lactation curve during summer has decreasing trend compared to spring in which lactation curve maintained within high levels. The trial was conducted in spring (April-May) and summer period (June-July) on total of 40 dairy cows of Holstein-Friesian breed in early lactation period (first 60 days of lactation). Milking capacity in cows and milk chemical ingredients (milk fat and proteins) were statistically significantly higher in the spring period compared to summer, while higher values of lactose were not statistically significant. Total average milk production per cow was significantly higher in spring period (42.74?4.98l) than in summer (39.60?5.09l) at the level of P<0.05. A higher rate of milk fat was recorded in spring in relation to summer period the level of significance being P<0.01. The content of proteins in milk in spring period was 13% higher than in summer. The established difference was highly statistically significant (P<0.001). Obtained values for percentage of lactose varied slightly (4.45?0.54% in spring versus 4.03?0.24% in summer period; P>0.05).

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