keyword
MENU ▼
Read by QxMD icon Read
search

repellent

keyword
https://www.readbyqxmd.com/read/29331128/two-component-gaussian-core-model-strong-coupling-limit-bjerrum-pairs-and-gas-liquid-phase-transition
#1
Derek Frydel, Yan Levin
In the present work, we investigate a gas-liquid transition in a two-component Gaussian core model, where particles of the same species repel and those of different species attract. Unlike a similar transition in a one-component system with particles having attractive interactions at long separations and repulsive interactions at short separations, a transition in the two-component system is not driven solely by interactions but by a specific feature of the interactions, the correlations. This leads to extremely low critical temperature, as correlations are dominant in the strong-coupling limit...
January 14, 2018: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29331089/modification-of-chrysanthemum-odour-and-taste-with-chrysanthemol-synthase-induces-strong-dual-resistance-against-cotton-aphids
#2
Hao Hu, Jinjin Li, Thierry Delatte, Jacques Vervoort, Liping Gao, Francel Verstappen, Wei Xiong, Jianping Gan, Maarten A Jongsma, Caiyun Wang
Aphids are pests of chrysanthemum that employ plant volatiles to select host plants and ingest cell contents to probe host quality before engaging in prolonged feeding and reproduction. Changes in volatile and non-volatile metabolite profiles can disrupt aphid-plant interactions and provide new methods of pest control. Chrysanthemol synthase (CHS) from Tanacetum cinerariifolium, represents the first committed step in the biosynthesis of pyrethrin ester insecticides, but no biological role for the chrysanthemol product alone has yet been documented...
January 13, 2018: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/29329403/host-tree-selection-by-the-invasive-argentine-ant-hymenoptera-formicidae-in-relation-to-honeydew-producing-insects
#3
Yugo Seko, Daisuke Hayasaka, Atsushi Nishino, Taizo Uchida, Francisco Sánchez-Bayo, Takuo Sawahata
The Argentine ant, Linepithema humile (Mayr; Hymenoptera: Formicidae), is one of the world's most hazardous invasive species, and thus its eradication from Japan is important. Physical and chemical controls can be expensive and cause strong adverse effects on local terrestrial ecosystems regardless of their high efficacy. Here, presence/absence of host-tree selection by Argentine ants was investigated to understand the ant-honeydew-producing insects interactions in order to develop new cultural controls compatible with biodiversity conservation...
January 10, 2018: Journal of Economic Entomology
https://www.readbyqxmd.com/read/29328117/rotating-of-low-refractive-index-microparticles-with-a-quasi-perfect-optical-vortex
#4
Yansheng Liang, Ming Lei, Shaohui Yan, Manman Li, Yanan Cai, Zhaojun Wang, Xianghua Yu, Baoli Yao
Low-refractive-index microparticles, such as hollow microspheres, have shown great significance in some applications, such as biomedical sensing and targeted drug delivery. However, optical trapping and manipulation of low-refractive-index microparticles are challenging, owing to the repelling force exerted by typical optical traps. In this paper, we demonstrated optical trapping and rotating of large-sized low-refractive-index microparticles by using quasi-perfect optical vortex (quasi-POV) beams, which were generated by Fourier transform of high-order quasi-Bessel beams...
January 1, 2018: Applied Optics
https://www.readbyqxmd.com/read/29327744/spinel-co3o4-nanomaterials-for-efficient-and-stable-large-area-carbon-based-printed-perovskite-solar-cells
#5
Amna Bashir, Sudhanshu Shukla, Jia Haur Lew, Shashwat Shukla, Annalisa Bruno, Disha Gupta, Tom Baikie, Rahul Patidar, Zareen Akhter, Anish Priyadarshi, Nripan Mathews, Subodh G Mhaisalkar
Carbon based perovskite solar cells (PSCs) are fabricated through easily scalable screen printing techniques, using abundant and cheap carbon to replace the hole transport material (HTM) and the gold electrode further reduces costs, and carbon acts as a moisture repellent that helps in maintaining the stability of the underlying perovskite active layer. An inorganic interlayer of spinel cobaltite oxides (Co3O4) can greatly enhance the carbon based PSC performance by suppressing charge recombination and extracting holes efficiently...
January 12, 2018: Nanoscale
https://www.readbyqxmd.com/read/29324269/surfactant-free-synthesis-of-silica-aerogel-microspheres-with-hierarchically-porous-structure
#6
Yulu Zhang, Jin Wang, Xuetong Zhang
In this work, we developed a new method to synthesize silica aerogel microspheres via ambient pressure drying (APD) process without applying any surfactants and mechanical stirring. An ethanol solution of partially hydrolyzed, partially condensed silica (CS) was used as precursor in the synthesis, the water-repellent n-Heptane as solvent, while the water-soluble ammonia gas (NH3) as catalyst. After a fast sol-gel process and APD process, aerogel microspheres were obtained in the form of white powder with packing density ranged from 62 mg/cm3 to 230 mg/cm3 for different samples...
January 3, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29323482/a-fluorine-free-slippery-surface-with-hot-water-repellency-and-improved-stability-against-boiling
#7
Ryo Togasawa, Mizuki Tenjimbayashi, Takeshi Matsubayashi, Takeo Moriya, Kengo Manabe, Seimei Shiratori
Inspired by natural living things such as lotus leaves and pitcher plants, researchers have developed many excellent antifouling coatings. In particular, hot-water repellent surfaces have received much attention in recent years because of their wide range of applications. However, coatings with stability against boiling in hot water have not been achieved yet. Long-chain perfluorinated materials, which are often used for liquid-repellent coatings owing to their low surface energy, hinder the potential application of antifouling coatings in food containers...
January 11, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29323200/heat-transfer-enhancement-during-water-and-hydrocarbon-condensation-on-lubricant-infused-surfaces
#8
Daniel J Preston, Zhengmao Lu, Youngsup Song, Yajing Zhao, Kyle L Wilke, Dion S Antao, Marcel Louis, Evelyn N Wang
Vapor condensation is routinely used as an effective means of transferring heat or separating fluids. Dropwise condensation, where discrete droplets form on the condenser surface, offers a potential improvement in heat transfer of up to an order of magnitude compared to filmwise condensation, where a liquid film covers the surface. Low surface tension fluid condensates such as hydrocarbons pose a unique challenge since typical hydrophobic condenser coatings used to promote dropwise condensation of water often do not repel fluids with lower surface tensions...
January 11, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29315275/a-pilot-qualitative-investigation-of-stakeholders-experiences-and-opinions-of-equine-insect-bite-hypersensitivity-in-england
#9
Hannah R Lomas, Philip A Robinson
Equine insect bite hypersensitivity (IBH), commonly known as sweet itch or summer eczema, is a frustrating recurrent skin disease in the equine industry involving an immune reaction to the bites of Culicoides spp. midges. To investigate the impact of IBH in the field, an exploratory pilot study was conducted with equine stakeholders in one region of central England. Nine semi-structured, face-to-face interviews were conducted with horse owners and an equine veterinarian. The aim was to gain an understanding of experiences with IBH, and to gauge opinions on the value of the various management strategies horse owners use to control IBH...
January 9, 2018: Veterinary Sciences
https://www.readbyqxmd.com/read/29314825/mixed-copolymer-adlayers-allowing-reversible-thermal-control-of-single-cell-aspect-ratio
#10
Fabrice Dalier, Galina V Dubacheva, Marie Coniel, Drazen Zanchi, Anouk Galtayries, Matthieu Piel, Emmanuelle Marie, Christophe Tribet
Dynamic guidance of living cells is achieved by fine tuning and spatiotemporal modulation on artificial polymer layers enabling reversible peptide display. Adjustment of surface composition and interactions is obtained by coadsorption of mixed poly(lysine) derivatives, grafted with either repellent PEG, RGD adhesion peptides, or T-responsive poly(N-isopropylacrylamide) strands. Deposition of mixed adlayers provides a straightforward mean to optimize complex substrates, which is here implemented to achieve 1) thermal control of ligand accessibility and 2) adjustment of relative adhesiveness between adjacent micropatterns, while preserving cell attachment during thermal cycles...
January 9, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29314635/semiochemicals-to-enhance-herbivory-by-diorhabda-carinulata-aggregations-in-saltcedar-tamarix-spp-infestations
#11
Alexander M Gaffke, Sharlene E Sing, Tom L Dudley, Daniel W Bean, Justin A Russak, Agenor Mafra-Neto, Paul A Grieco, Robert K D Peterson, David K Weaver
BACKGROUND: Semiochemicals for monitoring, attracting or repelling pest and beneficial organisms are increasingly deployed in agricultural and forest systems for pest management activities. However, the use of aggregation pheromones and host plant attractants for the express purpose of increasing the efficacy of classical biological control agents of weeds has not been widely reported. Therefore, we conducted field-based assays to determine if a specialized wax based matrix impregnated with an aggregation pheromone of the northern tamarisk beetle Diorhabda carinulata (Desbrochers) or host plant volatiles could increase the efficacy of D...
January 3, 2018: Pest Management Science
https://www.readbyqxmd.com/read/29306642/the-abc-transporter-snu-and-the-extracellular-protein-snsl-cooperate-in-the-formation-of-the-lipid-based-inward-and-outward-barrier-in-the-skin-of-drosophila
#12
Renata Zuber, Michaela Norum, Yiwen Wang, Kathrin Oehl, Nicole Gehring, Davide Accardi, Slawomir Bartozsewski, Jürgen Berger, Matthias Flötenmeyer, Bernard Moussian
Lipids in extracellular matrices (ECM) contribute to barrier function and stability of epithelial tissues such as the pulmonary alveoli and the skin. In insects, skin waterproofness depends on the outermost layer of the extracellular cuticle termed envelope that contains cuticulin, an unidentified water-repellent complex molecule composed of proteins, lipids and catecholamines. Based on live-imaging analyses of fruit fly larvae, we find that initially envelope units are assembled within putative vesicles harbouring the ABC transporter Snu and the extracellular protein Snsl...
December 27, 2017: European Journal of Cell Biology
https://www.readbyqxmd.com/read/29304794/socio-demographic-and-household-attributes-may-not-necessarily-influence-malaria-evidence-from-a-cross-sectional-study-of-households-in-an-urban-slum-setting-of-chennai-india
#13
Shalu Thomas, Sangamithra Ravishankaran, Aswin Asokan, N A Johnson Amala Justin, T Maria Jusler Kalsingh, Manu Thomas Mathai, Neena Valecha, Alex Eapen
BACKGROUND: Household and environmental factors are reported to influence the malaria endemicity of a place. Hence, a careful assessment of these factors would, potentially help in locating the possible areas under risk to plan and adopt the most suitable and appropriate malaria control strategies. METHODS: A cross-sectional household survey was carried out in the study site, Besant Nagar, Chennai, through random sampling method from February 2014 to February 2015...
January 5, 2018: Malaria Journal
https://www.readbyqxmd.com/read/29301722/human-interventions-driving-forces-of-mosquito-evolution
#14
REVIEW
Caroline Fouet, Peter Atkinson, Colince Kamdem
One of the most common strategies for controlling mosquito-borne diseases relies on the use of chemical pesticides to repel or kill the mosquito vector. Pesticide exposure interferes with several key biological functions in the mosquito and triggers a variety of adaptive responses whose underlying mechanisms are only partially elucidated. The availability of reference genome sequences opens up the possibility of tracking signatures of evolutionary changes, including the most recent, across the genomes of many vector species...
November 29, 2017: Trends in Parasitology
https://www.readbyqxmd.com/read/29301087/localized-3-d-functionalization-of-bionanoreceptors-on-high-density-micropillar-arrays-via-electrowetting
#15
Sangwook Chu, Thomas E Winkler, Adam Degen Brown, James N Culver, Reza Ghodssi
In this work, we introduce an electrowetting-assisted 3-D biofabrication process allowing both complete and localized functionalization of bionanoreceptors onto densely arranged 3-D microstructures. Integration of biomaterials with three-dimensional (3-D) microdevice components offers exciting opportunities for communities developing miniature bioelectronics with enhanced performances and advanced modes of operation. However, most biological materials are stable only in properly conditioned aqueous solutions, thus the water-repellent properties exhibited by densely arranged micro-/nano- structures (widely known as the Cassie-Baxter state) represent a significant challenge to biomaterial integration...
January 4, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29297223/single-step-fabrication-of-high-throughput-surface-enhanced-raman-scattering-substrates
#16
Yi Zeng, Xin Du, Bingbing Gao, Bing Liu, Zhuoying Xie, Zhongze Gu
The combination of surface-enhanced Raman scattering (SERS) with high-throughput screening (HTS) has significant importance for highly sensitive and massive workload assays. Although fabrication of HTS-SERS substrates can be achieved by several methods, the high cost as well as large-equipment-dependence limit their applications. Here we report a simple method to fabricate HTS-SERS substrates within one-step process. The HTS-SERS substrate is fabricated by simply UV irradiating a fluoroalkylsilane-modified liquid-repellent TiO2 surface in AgNO3 solution through a photomask...
January 3, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29289771/the-influence-of-the-so2-ageing-on-the-graffiti-cleaning-effectiveness-with-chemical-procedures-on-a-granite-substrate
#17
Vera Gomes, Amélia Dionísio, J Santiago Pozo-Antonio
Graffiti are one of the most severe threats to Stone Cultural Heritage and are most of the times removed after long periods of environmental exposure. This research intends to evaluate the influence of the ageing of the graffitis on the effectiveness of their cleaning. So, comparative studies on unaged and on artificially SO2 aged samples were conducted. Four graffiti spray colours were applied on a granite stone and cleaned with two chemical commercial cleaners: a solution of KOH and a solution of n-butyl acetate, xylene and alcohol isobutyl...
December 28, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29287758/repellence-of-essential-oils-and-selected-compounds-against-ticks-a-systematic-review
#18
REVIEW
Giovanni Benelli, Roman Pavela
Ticks act as vectors of a wide range of infectious agents, far encompassing any other group of bloodsucking arthropods worldwide. The prevention of tick-borne diseases is strictly linked to the successful management of tick vector populations. The employ of repellents can represent a worth solution to avoid tick bites. It is widely adopted to protect travellers and pets exposed to ticks during limited periods of the year. The use of natural products as active ingredients in eco-friendly repellent formulations is currently a prominent research area, due to the wide diversity and high effectiveness of a number of plant-borne compounds, with special reference to essential oils (EOs) extracted from medicinal and aromatic species...
December 26, 2017: Acta Tropica
https://www.readbyqxmd.com/read/29286629/environmentally-benign-production-of-stretchable-and-robust-superhydrophobic-silicone-monoliths
#19
Alexander Davis, Salvatore Surdo, Gianvito Caputo, Ilker S Bayer, Athanassia Athanassiou
Superhydrophobic materials hold an enormous potential in sectors as important as aerospace, food industries or biomedicine. Despite this great promise, the lack of environmentally friendly production methods and limited robustness remain the two most pertinent barriers to the scalability, large-area production and widespread use of superhydrophobic materials. In this work, highly robust superhydrophobic silicone monoliths are produced through a scalable and environmentally friendly emulsion technique. It is first found that stable and surfactantless water-in-polydimethylsiloxane (PDMS) emulsions can be formed through mechanical mixing...
December 29, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29285899/design-of-polymeric-culture-substrates-to-promote-proangiogenic-potential-of-stem-cells
#20
REVIEW
Byeong-Ju Kwon, Xintong Wang, Mi-Lan Kang, Jin You, Shin-Jeong Lee, Won Shik Kim, Young-Sup Yoon, Jong-Chul Park, Hak-Joon Sung
Stem cells are a promising cell source for regenerative medicine due to their differentiation and self-renewal capacities. In the field of regenerative medicine and tissue engineering, a variety of biomedical technologies have been tested to improve proangiogenic activities of stem cells. However, their therapeutic effect is found to be limited in the clinic because of cell loss, senescence, and insufficient therapeutic activities. To address this type of issue, advanced techniques for biomaterial synthesis and fabrication have been approached to mimic proangiogenic microenvironment and to direct proangiogenic activities...
December 29, 2017: Macromolecular Bioscience
keyword
keyword
115495
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"