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Total 84379 results found since Jan 2013.
Idiothetic Path Integration in the Fruit Fly Drosophila melanogaster.
Abstract
After discovering a small drop of food, hungry flies exhibit a peculiar behavior in which they repeatedly stray from, but then return to, the newly discovered resource. To study this behavior in more detail, we tracked hungry Drosophila as they explored a large arena, focusing on the question of how flies remain near the food. To determine whether flies use external stimuli, we individually eliminated visual, olfactory, and pheromonal cues. In all cases, flies still exhibited a centralized search behavior, suggesting that none of these cues are absolutely required for navigation back to the food. To simul...
Source: Current Biology - July 11, 2017 Category: Biology Authors: Kim IS, Dickinson MH Tags: Curr Biol Source Type: research
Population level evidence for seasonality of the human microbiome.
The objective of this study is to determine whether human body odors undergo seasonal modulation. We utilized google trends search volume from the United States of America from January 1, 2010 to June 24, 2017 for a number of predetermined body odors. Regression modeling of time series data was completed. Our primary outcome was to determine the proportion of the variability in Internet searches for each unpleasant odor (about the mean) that is explained by a seasonal model. We determined that the seasonal (sinusoidal) model provided a significantly better fit than the null model (best straight line fit) for all searches r...
Source: Chronobiology International - January 17, 2018 Category: Biology Authors: Korownyk C, Liu F, Garrison S Tags: Chronobiol Int Source Type: research
The impact of civil conflict on child health: Evidence from Colombia
Econ Hum Biol. 2021 Oct 28;44:101074. doi: 10.1016/j.ehb.2021.101074. Online ahead of print.ABSTRACTInternal armed conflicts have become more common and more physically destructive since the mid-20th century, with devastating consequences for health and development in low- and middle-income countries. This paper investigates the causal impacts of the long-term internal conflict on child health in Colombia, following an identification strategy based on the temporal and geographic variation of conflict intensity. We estimate the effect of different levels of conflict intensity on height-for-age (HAZ), weight-for-age (WAZ), a...
Source: Economics and Human Biology - November 28, 2021 Category: Biology Authors: No émi Kreif Andrew Mirelman Marc Suhrcke Giancarlo Buitrago Rodrigo Moreno-Serra Source Type: research
The Content of Cd and Pb in Herbs and Single-Component Spices Used in Polish Cuisine
Biol Trace Elem Res. 2022 Oct 7. doi: 10.1007/s12011-022-03437-7. Online ahead of print.ABSTRACTSpices and herbs play an important role in the human diet, mostly due to the presence of essential oils and high antioxidant activity. Therefore, the toxicity of metals raises concerns about the safety of consumption of spices and herbs. This paper examines the content of Cd and Pb in fresh and dried herbs and single-component spices that are the most popular in Polish cuisine: 100 samples of nine kinds of dried herbs, 184 samples of 15 kinds of fresh herbs and 148 samples of 14 kinds of loose single-component spices. The level ...
Source: Biological Trace Element Research - October 7, 2022 Category: Biology Authors: Anna Winiarska-Mieczan Karolina Jachimowicz Ma łgorzata Kwiecień Robert Krusi ński Svitlana Kislova Lesya Sowi ńska Zvenyslava Zasadna Dmytro Yanovych Source Type: research
Life history in primate teeth is revealed by changes in major and minor element concentrations measured via field-emission SEM-EDS analysis
Biol Lett. 2023 Jan;19(1):20220438. doi: 10.1098/rsbl.2022.0438. Epub 2023 Jan 18.ABSTRACTOvercoming the non-specificity of histological accentuated growth lines in hard tissues is an ongoing challenge. Identifying season at death and reproductive events has profound implications for evolutionary, ecological and conservation studies. Dental cementum is a mineralized tissue with yearly periodicity that continues deposition from tooth formation until death, maintaining a record spanning almost the entire life of an individual. Recent work has successfully employed elemental analysis of calcified incremental tissues to detect...
Source: Biology Letters - January 18, 2023 Category: Biology Authors: Paola Cerrito Bin Hu Rachel Kalisher Shara E Bailey Timothy G Bromage Source Type: research
"Curr Biol"ta; +173 new citations
173 new pubmed citations were retrieved for your search.
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"Curr Biol"[ta]
These pubmed results were generated on 2013/05/22PubMed, a service of the National Library of Medicine, includes over 15 million
citations for biomedical articles back to the 1950's.
These citations are from MEDLINE and additional life science journals.
PubMed includes links to many sites providing full text articles and other related resources.
Source: Current Biology - May 23, 2013 Category: Biology Tags: Report Source Type: research
Reassessing Google Flu Trends Data for Detection of Seasonal and Pandemic Influenza: A Comparative Epidemiological Study at Three Geographic Scales
by Donald R. Olson, Kevin J. Konty, Marc Paladini, Cecile Viboud, Lone Simonsen
The goal of influenza-like illness (ILI) surveillance is to determine the timing, location and magnitude of outbreaks by monitoring the frequency and progression of clinical case incidence. Advances in computational and information technology have allowed for automated collection of higher volumes of electronic data and more timely analyses than previously possible. Novel surveillance systems, including those based on internet search query data like Google Flu Trends (GFT), are being used as surrogates for clinically-based reporting of influen...
Source: PLoS Computational Biology - October 17, 2013 Category: Biology Authors: Donald R. Olson et al. Source Type: research
BLAST-based structural annotation of protein residues using Protein Data Bank
Conclusions:
In summary, this manuscript presents a web server for comprehensive annotation of a protein based on similarity search. It integrates number of visualization tools that facilitate users to understand structure and function of protein residues. This web server is available freely for scientific community from URL http://crdd.osdd.net/raghava/starpdb.ReviewersThis article was reviewed by Prof Michael Gromiha, Prof. Thomas Dandekar and Dr. I. King Jordan.
Source: Biology Direct - January 25, 2016 Category: Biology Authors: Harinder SinghGajendra Raghava Source Type: research
Hide and seek: How do DNA glycosylases locate oxidatively damaged DNA bases amidst a sea of undamaged bases?
Abstract
The first step of the base excision repair (BER) pathway responsible for removing oxidative DNA damage utilizes DNA glycosylases to find and remove the damaged DNA base. How glycosylases find the damaged base amidst a sea of undamaged bases has long been a question in the BER field. Single molecule total internal reflection fluorescence microscopy (SM TIRFM) experiments have allowed for an exciting look into this search mechanism and have found that DNA glycosylases scan along the DNA backbone in a bidirectional and random fashion. By comparing the search behavior of bacterial glycosylases from different ...
Source: Free Radical Biology and Medicine - November 15, 2016 Category: Biology Authors: Lee AJ, Wallace SS Tags: Free Radic Biol Med Source Type: research
"Biol Bull"ta; +164 new citations
164 new pubmed citations were retrieved for your search.
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"Biol Bull"[ta]
These pubmed results were generated on 2018/01/06PubMed comprises more than millions of citations for biomedical literature from MEDLINE, life science journals, and online books.
Citations may include links to full-text content from PubMed Central and publisher web sites.
Source: The Biological Bulletin - January 6, 2018 Category: Biology Tags: Report Source Type: research
"Biol Bull"ta; +210 new citations
210 new pubmed citations were retrieved for your search.
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"Biol Bull"[ta]
These pubmed results were generated on 2018/01/07PubMed comprises more than millions of citations for biomedical literature from MEDLINE, life science journals, and online books.
Citations may include links to full-text content from PubMed Central and publisher web sites.
Source: The Biological Bulletin - January 7, 2018 Category: Biology Tags: Report Source Type: research
"Biol Bull"ta; +126 new citations
126 new pubmed citations were retrieved for your search.
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"Biol Bull"[ta]
These pubmed results were generated on 2018/01/12PubMed comprises more than millions of citations for biomedical literature from MEDLINE, life science journals, and online books.
Citations may include links to full-text content from PubMed Central and publisher web sites.
Source: The Biological Bulletin - January 12, 2018 Category: Biology Tags: Report Source Type: research
"Biol Bull"ta; +172 new citations
172 new pubmed citations were retrieved for your search.
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"Biol Bull"[ta]
These pubmed results were generated on 2018/01/13PubMed comprises more than millions of citations for biomedical literature from MEDLINE, life science journals, and online books.
Citations may include links to full-text content from PubMed Central and publisher web sites.
Source: The Biological Bulletin - January 13, 2018 Category: Biology Tags: Report Source Type: research
