Results 81 to 90 of about 106,236 (355)

Biodegradable, Humidity‐Insensitive Mask‐Integrated E‐Nose for Sustainable and Non‐Invasive Continuous Breath Analysis

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces a paper‐based biodegradable, humidity‐insensitive e‐nose for real‐time breath analysis, addressing challenges in existing technologies such as humidity interference, high costs, and environmental impact. Featuring hydrophobic polymer coatings, these sensors reliably detect VOCs even in high‐moisture environments.
Indrajit Mondal   +2 more
wiley   +1 more source

Swimming against the tide: Gender bias in the physics classroom [PDF]

open access: yes, 2017
This study examines physics students' evaluations of identical, video-recorded lectures performed by female and male actors playing the role of professors. The results indicate that evaluations by male students show statistically significant overall biases with male professors rated more positively than female professors.
arxiv   +1 more source

Keys and Notes on the Buprestidae (Coleoptera) of Michigan [PDF]

open access: yes, 2017
The distribution and dates of adult activity for Michigan buprestids are discussed. Keys to the genera and species, as well as host information are presented for 116 species and one subspecies.
Jackman, John A   +2 more
core   +2 more sources

Smart Dust for Chemical Mapping

open access: yesAdvanced Materials, EarlyView.
This review article explores the advancement of smart dust networks for high‐resolution spatial and temporal chemical mapping. Comprising miniature, wireless sensors, and communication devices, smart dust autonomously collects, processes, and transmits data via swarm‐based communication.
Indrajit Mondal, Hossam Haick
wiley   +1 more source

Description of the male of Brachygastra moebiana Saussure 1867 (Hymenoptera: Vespidae; Epiponini)

open access: yesEntomoBrasilis, 2011
The male of Brachygastra moebiana (de Saussure) is described, including figures of male genitalia and notes about the Richards’s description of what he supposed to be the same species.
Sergio Ricardo Andena, Sidnei Mateus
doaj   +4 more sources

Increased adaptability to rapid environmental change can more than make up for the two-fold cost of males [PDF]

open access: yes, 2018
The famous "two-fold cost of sex" is really the cost of anisogamy -- why should females mate with males who do not contribute resources to offspring, rather than isogamous partners who contribute equally? In typical anisogamous populations, a single very fit male can have an enormous number of offspring, far larger than is possible for any female or ...
arxiv   +1 more source

Evolution of female choice and age-dependent male traits with paternal germ-line mutation [PDF]

open access: yesarXiv, 2013
Several studies question the adaptive value of female preferences for older males. Theory and evidence show that older males carry more deleterious mutations in their sperm than younger males carry. These mutations are not visible to females choosing mates.
arxiv  

Descriptions of four new species of Cryptolestes Ganglbauer : with a revised key to the New World species and notes on other species (Coleoptera: Laemophloeidae) [PDF]

open access: yes, 2002
The following new species of Cryptolestes Ganglbauer are described and illustrated: Cryptolestes obesus Thomas, new species, Brazil; Cryptolestes turnbowi Thomas, new species, Honduras and Mexico; Cryptolestes inyoensis Thomas, new species, California ...
Thomas, Michael C.
core  

Three new species of Omalodes (Omalodes) (Histeridae, Histerinae) from South America

open access: yesZooKeys, 2013
Three new species of Omalodes are described from South America, including descriptions of male and female genitalia. Omalodes (O.) mazuri sp. n. is described from Peru and Bolivia; Omalodes (O.) punctulatus sp.n.
Daniel P. Moura, Lucia Almeida
doaj   +1 more source

Theclinae of Rondonia, Brazil: Strymon Hübner : with descriptions of new species (Lepidoptera: Lycaenidae) [PDF]

open access: yes, 2011
Twenty-two species of Strymon are known from the vicinity of Cacaulandia in Rondonia, Brazil, of which 14 are new species. These belong to 5 species groups: the "oreala" group [Strymon megarus (Godart)]; the "ziba" group [Strymon ziba (Hewitson), Strymon
Austin, George T., Johnson, Kurt
core  

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