Comparison of the photo-acclimation potential of floating and benthic thalli of Sargassum horneri (Phaeophyta) during autumn and winter

With gradient analysis investigated the role of soil moisture in the formation of the modern population of birds in the reserve forest plantations. Soil moisture was divided into seven grades. For this purpose used grass cover and the coefficient of local moistening. His proposed PhD L. P. Travleev. This method allows knowing the degree of influence of soil moisture at the birds. We analyzed birds species composition, population, placement in space and power of influence factors (soil moisture). Investigations were carried out on the territory of the Biosphere Reserve «Askania Nova». We studied the birds which live in the reserve at the end of the summer, autumn and winter. This happened from 2006 to 2013 years. Specially was studied as permanently specific form of birds is found in a particular humidity. The degree of coupling was studied using the amount of information that transmits to the local bird humidification. For 68 species of birds are the options of the population density, coefficient koligatsii and data communication with the seven variants of soil moisture. For all kinds of set information «price» of each option dampening that contributes to the formation of a particular community of birds. Thus, the defined contribution to the formation of soil moisture forest bird communities. Species representation and density gradient within the test moisture is not in direct linear relationship from moisture and ranges from 11 (very coldly) to 50 species (moist soil). The density of the community varies from 0,5 birds / hectare (very dry) to 269 birds / hectare (fresh soil). The strongest link between the information and the formation of moisture gradient structure avifauna is typical in a fresh soil – bird on the edge, and wet – forest representatives. These types of humidification function is performed starting in the formation of two major blocks dendrophilous community. The steppe birds give way to forest representatives when the soil slightly moist. The main conclusion of our study includes the following: than wetter the soil the more species of birds lives in the forest; some graduation humidity are the most important for separate species of birds; it is very important for birds, there are places where one can drink water. Further invasive alien species can occur where the soil is moist. Forest with dry soil is already fully occupied by birds.

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Acanthamoeba Species in Tap Water, Egypt

International Journal of Pharmaceutical and Clinical Research ◽

10.25258/ijpcr.v9i1.8259 ◽

2017 ◽

Vol 9 (1) ◽

Author(s):

Ahmad Z Al-Herrawy ◽

Mohamed A Marouf ◽

Mahmoud A. Gad

Keyword(s):

Water Samples ◽

Tap Water ◽

Pcr Analysis ◽

Pulmonary Infections ◽

Clinical Syndromes ◽

Acanthamoeba Species ◽

Amebic Encephalitis ◽

Acanthamoeba Culbertsoni ◽

Autumn And Winter

Genus Acanthamoeba causes 3 clinical syndromes amebic keratitis, granulomatous amebic encephalitis and disseminated granulomatous amebic disease (eg, sinus, skin and pulmonary infections). A total of 144 tap water samples were collected from Giza governorate, Egypt. Samples were processed for detection of Acanthamoeba species using non-nutrient agar (NNA) and were incubated at 30oC. The isolates of Acanthamoeba were identified to species level based on the morphologic criteria. Molecular characterization of the Acanthamoeba isolates to genus level was performed by using PCR. The obtained results showed that the highest occurrence percentage of Acanthamoeba species in water samples was observed in summer season (38.9%), then it decreased to be 30.6% in spring and 25% in each of autumn and winter. PCR analysis showed that 100% of 43 Acanthamoeba morphologically positive samples were positive by genus specific primer. In the present study eight species of Acanthamoeba can be morphologically recognized namely Acanthamoeba triangularis, Acanthamoeba echinulata, Acanthamoeba astronyxis, Acanthamoeba comandoni, Acanthamoeba griffini, Acanthamoeba culbertsoni, Acanthamoeba quina and Acanthamoeba lenticulata. In conclusion, the most common Acanthamoeba species in tap water was Acanthamoeba comandoni

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COLUMNAR GROWTH HABIT APPLE RESISTANCE TO LAW TEMPERATURE AT AUTUMN AND WINTER PERIOD

POMICULTURE & SMALL FRUITS CULTURE IN RUSSIA ◽

10.31676/2073-4948-2020-63-70-76 ◽

2020 ◽

Vol 63 (1) ◽

pp. 70-76

Author(s):

A. S. Zemisov ◽

N. N. Saveleva ◽

A. N. Yushkov ◽

V. V. Chivilev ◽

N. V. Borzykh

Keyword(s):

Growth Habit ◽

Winter Period ◽

Columnar Growth ◽

Autumn And Winter

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The microbiological condition of public air in the city during autumn and winter

Medical Studies ◽

10.5114/ms.2019.88418 ◽

2019 ◽

Vol 35 (3) ◽

pp. 203-209

Author(s):

Wioletta Adamus-Białek ◽

Aneta Filipiak ◽

Monika Wawszczak ◽

Aleksandra Woźniak ◽

Stanisław Głuszek

Keyword(s):

Autumn And Winter ◽

The City

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Analysis of the Particulate Matter Pollution in the Urban Areas of Croatia, EU

Environmental Sciences Proceedings ◽

10.3390/ecas2020-08145 ◽

2020 ◽

Vol 4 (1) ◽

pp. 9

Author(s):

Martina Habulan ◽

Bojan Đurin ◽

Anita Ptiček Siročić ◽

Nikola Sakač

Keyword(s):

Particulate Matter ◽

Urban Areas ◽

Fossil Fuels ◽

Negative Impact ◽

Electric Energy ◽

Two Cities ◽

Adriatic Coast ◽

Pm2.5 And Pm10 ◽

Autumn And Winter ◽

Particulate Matter Pollution

Particulate matter (PM) comprises a mixture of chemical compounds and water particles found in the air. The size of suspended particles is directly related to the negative impact on human health and the environment. In this paper, we present an analysis of the PM pollution in urban areas of Croatia. Data on PM10 and PM2.5 concentrations were measured with nine instruments at seven stationary measuring units located in three continental cities, namely Zagreb (the capital), Slavonski Brod, and Osijek, and two cities on the Adriatic coast, namely Rijeka and Dubrovnik. We analyzed an hourly course of PM2.5 and PM10 concentrations and average seasonal PM2.5 and PM10 concentrations from 2017 to 2019. At most measuring stations, maximum concentrations were recorded during autumn and winter, which can be explained by the intensive use of fossil fuels and traffic. Increases in PM concentrations during the summer months at measuring stations in Rijeka and Dubrovnik may be associated with the intensive arrival of tourists by air during the tourist season, and lower PM concentrations during the winter periods may be caused by a milder climate consequently resulting in lower consumption of fossil fuels and use of electric energy for heating.

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UVB protective effects of Sargassum horneri through the regulation of Nrf2 mediated antioxidant mechanism

Scientific Reports ◽

10.1038/s41598-021-88949-3 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Eui Jeong Han ◽

Seo-Young Kim ◽

Hee-Jin Han ◽

Hyun-Soo Kim ◽

Kil-Nam Kim ◽

...

Keyword(s):

Skin Barrier ◽

Human Keratinocytes ◽

Underlying Mechanism ◽

Ultraviolet B ◽

Sargassum Horneri ◽

Cellular Damage ◽

Protective Effects ◽

Skin Damage ◽

Antioxidant Mechanism ◽

Induced Apoptosis

AbstractThe present study aimed to evaluate the protective effect of a methanol extract of Sargassum horneri (SHM), which contains 6-hydroxy-4,4,7a-trimethyl-5,6,7,7a-tetrahydrobenzofuran-2(4H)-one (HTT) and apo-9′-fucoxanthinone, against ultraviolet B (UVB)-induced cellular damage in human keratinocytes and its underlying mechanism. SHM significantly improved cell viability of UVB-exposed human keratinocytes by reducing the generation of intracellular reactive oxygen species (ROS). Moreover, SHM inhibited UVB exposure-induced apoptosis by reducing the formation of apoptotic bodies and the populations of the sub-G1 hypodiploid cells and the early apoptotic cells by modulating the expression of the anti- and pro-apoptotic molecules, Bcl-2 and Bax, respectively. Furthermore, SHM inhibited NF-κB p65 activation by inducing the activation of Nrf2/HO-1 signaling. The cytoprotective and antiapoptotic activities of SHM are abolished by the inhibition of HO-1 signaling. In further study, SHM restored the skin dryness and skin barrier disruption in UVB-exposed human keratinocytes. Based to these results, our study suggests that SHM protects the cells against UVB-induced cellular damages through the Nrf2/HO-1/NF-κB p65 signaling pathway and may be potentially useful for the prevention of UVB-induced skin damage.

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Isolation and Purification of Fucoxanthin from Brown Seaweed Sargassum horneri Using Open ODS Column Chromatography and Ethanol Precipitation

Molecules ◽

10.3390/molecules26133777 ◽

2021 ◽

Vol 26 (13) ◽

pp. 3777

Author(s):

Yuemei Ye ◽

Jingwen Sun ◽

Liting Wang ◽

Junwang Zhu ◽

Wei Cui ◽

...

Keyword(s):

Column Chromatography ◽

Recovery Rate ◽

Biological Activities ◽

Brown Seaweed ◽

Sargassum Horneri ◽

Scale Production ◽

Water Mixture ◽

Isolation And Purification ◽

Ethanol Precipitation ◽

Water Solvent

As an abundant marine xanthophyll, fucoxanthin (FX) exhibits a broad range of biological activities. The preparation of high-purity FX is in great demand, however, most of the available methods require organic solvents which cannot meet the green chemistry standard. In the present study, a simple and efficient purification approach for the purification of FX from the brown seaweed Sargassum horneri was carried out. The FX-rich ethanol extract was isolated by octadecylsilyl (ODS) column chromatography using ethanol–water solvent as a gradient eluent. The overwhelming majority of FX was successfully eluted by the ethanol–water mixture (9:1, v/v), with a recovery rate of 95.36%. A parametric study was performed to optimize the aqueous ethanol precipitation process by investigating the effects on the purity and recovery of FX. Under the optimal conditions, the purity of FX was 91.07%, and the recovery rate was 74.98%. Collectively, the eco-friendly method was cost-efficient for the purification of FX. The developed method provides a potential approach for the large-scale production of fucoxanthin from the brown seaweed Sargassum horneri.

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Surface Sediment Diatom Assemblages Response to Water Environment in Dongping Lake, North China

Water ◽

10.3390/w13030339 ◽

2021 ◽

Vol 13 (3) ◽

pp. 339

Author(s):

Shuangshuang Liu ◽

Min Yao ◽

Shiyue Chen ◽

Xingzhong Yuan

Keyword(s):

Environmental Factors ◽

Water Environment ◽

Oxygen Demand ◽

Diatom Assemblages ◽

Multivariate Statistical ◽

Dongping Lake ◽

Autumn And Winter ◽

Response To Water ◽

The Relationship ◽

Significant Factors

The relationship between the diatom taxa preserved in surface lake sediments and environmental variables in Dongping Lake was explored using multivariate statistical methods. The statistical analysis showed that the lake was eutrophicated in all seasons. Transparency, chlorophyll a (Chla) and total phosphorus (TP) were the dominant environmental factors in spring and summer, and NH4+-N and chemical oxygen demand (COD) were the dominant environmental factors in autumn and winter. Sixteen genera and 43 species of diatom were found in the surface sediments, and the dominant diatom genera were Aulacoseira, Ulnaria, Cyclotella, Navicula and Fragilaria. A redundancy analysis (RDA) and Monte Carlo permutation 20 test revealed that COD, pH, TP, conductivity and transparency were significant factors influencing diatom assemblage change, meaning that the distribution of the diatom assemblages were mostly influenced by nutrient composition, light intensity and ion concentrations.

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Maps, trends, and temperature sensitivities—phenological information from and for decreasing numbers of volunteer observers

International Journal of Biometeorology ◽

10.1007/s00484-021-02110-3 ◽

2021 ◽

Author(s):

Ye Yuan ◽

Stefan Härer ◽

Tobias Ottenheym ◽

Gourav Misra ◽

Alissa Lüpke ◽

...

Keyword(s):

Climate Change ◽

Time Series ◽

Strong Decrease ◽

Temperature Changes ◽

Interpolation Accuracy ◽

Observation Network ◽

Shiny App ◽

Long Term Trends ◽

Autumn And Winter

AbstractPhenology serves as a major indicator of ongoing climate change. Long-term phenological observations are critically important for tracking and communicating these changes. The phenological observation network across Germany is operated by the National Meteorological Service with a major contribution from volunteering activities. However, the number of observers has strongly decreased for the last decades, possibly resulting in increasing uncertainties when extracting reliable phenological information from map interpolation. We studied uncertainties in interpolated maps from decreasing phenological records, by comparing long-term trends based on grid-based interpolated and station-wise observed time series, as well as their correlations with temperature. Interpolated maps in spring were characterized by the largest spatial variabilities across Bavaria, Germany, with respective lowest interpolated uncertainties. Long-term phenological trends for both interpolations and observations exhibited mean advances of −0.2 to −0.3 days year−1 for spring and summer, while late autumn and winter showed a delay of around 0.1 days year−1. Throughout the year, temperature sensitivities were consistently stronger for interpolated time series than observations. Such a better representation of regional phenology by interpolation was equally supported by satellite-derived phenological indices. Nevertheless, simulation of observer numbers indicated that a decline to less than 40% leads to a strong decrease in interpolation accuracy. To better understand the risk of declining phenological observations and to motivate volunteer observers, a Shiny app is proposed to visualize spatial and temporal phenological patterns across Bavaria and their links to climate change–induced temperature changes.

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Seasonal variation of patulous Eustachian tube diagnoses using climatic and national health insurance data

The Journal of Laryngology & Otology ◽

10.1017/s0022215121001596 ◽

2021 ◽

pp. 1-7

Author(s):

S Lee ◽

S-W Choi ◽

J Kim ◽

H M Lee ◽

S-J Oh ◽

...

Keyword(s):

Relative Risk ◽

Eustachian Tube ◽

Climatic Factors ◽

Data Sets ◽

National Data ◽

Health Insurance Data ◽

Number Of Patients ◽

Autumn And Winter ◽

Insurance Data ◽

Patulous Eustachian Tube

Abstract Objectives This study aimed to analyse if there were any associations between patulous Eustachian tube occurrence and climatic factors and seasonality. Methods The correlation between the monthly average number of patients diagnosed with patulous Eustachian tube and climatic factors in Seoul, Korea, from January 2010 to December 2016, was statistically analysed using national data sets. Results The relative risk for patulous Eustachian tube occurrence according to season was significantly higher in summer and autumn, and lower in winter than in spring (relative risk (95 per cent confidence interval): 1.334 (1.267–1.404), 1.219 (1.157–1.285) and 0.889 (0.840–0.941) for summer, autumn and winter, respectively). Temperature, atmospheric pressure and relative humidity had a moderate positive (r = 0.648), negative (r = –0.601) and positive (r = 0.492) correlation with the number of patulous Eustachian tube cases, respectively. Conclusion The number of patulous Eustachian tube cases was highest in summer and increased in proportion to changes in temperature and humidity, which could be due to physiological changes caused by climatic factors or diet trends.

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