Results 61 to 70 of about 15,044,355 (406)

Impacts of seasonality and parasitism on honey bee population dynamics [PDF]

arXiv, 2023
The honeybee plays an extremely important role in ecosystem stability and diversity and in the production of bee pollinated crops. Honey bees and other pollinators are under threat from the combined effects of nutritional stress, parasitism, pesticides, and climate change that impact the timing, duration, and variability of seasonal events.
arxiv  

Measurements of the ion concentrations and conductivity over the Arabian Sea during the ARMEX [PDF]

Journal of Geophysical Research-Atmosphere, 110, D18207, 2005, 2009
Measurements of the small-, intermediate-, and large-ion concentrations and the atmospheric electric conductivity of both polarities have been made over the Arabian Sea on four cruises of ORV Sagarkanya during the Arabian Sea Monsoon Experiment (ARMEX)during the monsoon and pre-monsoon seasons of 2002 and 2003.
arxiv   +1 more source

Genetic diversity and population structure of the Taigan dog breed

FEBS Open Bio, EarlyView.
The Taigan is a rare sighthound from the mountains of Kyrgyzstan. We used DNA markers to study its genetic diversity and compare it with other sighthound breeds. Our findings show that the Taigan shares close genetic ties with the Kazakh Tazy, suggesting a common ancestry shaped by nomadic traditions and regional adaptation.
Kira Bespalova, Anastassiya Perfilyeva, Мamura Begmanova, Assel Zhaxylykova, Arailym Yerzhan, Kanagat Yergali, Almazbek Akunov, Marat Munarbek uulu, Anna Khamchukova, Almira Amirgaliyeva, Yelena Kuzovleva   +10 more
wiley   +1 more source

Seasonal changes of electrophysiological heterogeneities in the rainbow trout ventricular myocardium

Current Research in Physiology, 2022
Introduction: Thermal adaptation in fish is accompanied by morphological and electrophysiological changes in the myocardium. Little is known regarding seasonal changes of spatiotemporal organization of ventricular excitation and repolarization processes.
Marina A. Vaykshnorayte, Vladimir A. Vityazev, Jan E. Azarov   +2 more
doaj  

Effects of Weather Conditions on Phenolic Content and Antioxidant Capacity in Juice of Chokeberries (Aronia melanocarpa L.)

Polish Journal of Food and Nutrition Sciences, 2017
Chokeberries are a subject of numerous studies due to a high phenolic compound content, antioxidant properties and potential positive influence on the health.
Tolić Mandica-Tamara, Krbavčić Ines Panjkota, Vujević Predrag, Milinović Bernardica, Jurčević Irena Landeka, Vahčić Nada   +5 more
doaj   +1 more source

Age, Sex and Seasonal Variations of Vitamin D Level in Children of Jammu Region [PDF]

Journal of Clinical and Diagnostic Research, 2018
Introduction: Vitamin D deficiency is considered as one of the most common undiagnosed medical conditions in the world. Studies from India have reported prevalence of vitamin D deficiency varying from 30 to 100%.
Rachna Sabharwal, Pallavi Mahajan
doaj   +1 more source

Spatio-Temporal Variation in Bird Assemblages in a Subtropical Urban Ecosystem

Diversity, 2022
Background: Being an excellent indicator of habitat quality, birds are more and more popular in urban studies. Selective impacts of urban environments on avian communities have been repeatedly demonstrated, however, limited information is available under
Shilin Xie, Baolong Han, Weiqi Zhou, Chaofan Xian, Zhiyun Ouyang   +4 more
doaj   +1 more source

Climatic seasonality may affect ecological network structure: Food webs and mutualistic networks [PDF]

Biosystems 121, 29-37 (2014), 2014
Ecological networks exhibit non-random structural patterns, such as modularity and nestedness, which indicate ecosystem stability, species diversity, and connectance. Such structure-stability relationships are well known. However, another important perspective is less well understood: the relationship between the environment and structure.
arxiv   +1 more source

Harnessing Outer Space for Improved Electrocaloric Cooling

Advanced Functional Materials, EarlyView.
A novel radiative heat sink/source‐integrated electrocaloric (R‐iEC) system combines the electrocaloric (EC) effect with a thermally conductive radiative cooler (TCRC) to address heat dissipation limitations in EC devices. Utilizing outer space as a heat sink, the system achieves up to 240 W m−2 of heat dissipation performance, making it highly ...
Dong Hyun Seo, Hyung Rae Kim, Joo Ho Yun, Hyunkyu Kwak, Do Hyeon Kim, Se‐Yeon Heo, Rujun Ma, Gil Ju Lee, Young Min Song   +8 more
wiley   +1 more source

Impacts of extreme precipitation and seasonal changes in precipitation on plants

, 2014
. The global hydrological cycle is predicted to become more intense in future climates, with both larger precipitation events and longer times between events in some regions.
M. Zeppel, Jessica V. Wilks, James D. Lewis   +2 more
semanticscholar   +1 more source