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https://www.readbyqxmd.com/read/27905608/drop-coating-deposition-of-a-liposome-suspension-on-surfaces-with-different-wettabilities-coffee-ring-formation-and-suspension-preconcentration
#1
Eva Kočišová, Martin Petr, Hana Šípová, Ondřej Kylián, Marek Procházka
Evaporation of a drop of biomolecular solution on a solid surface typically creates a ring-shaped drying pattern, formed by the so-called "coffee ring" effect. The size and shape of the "coffee ring" pattern is strongly dependent on the properties of the surface as well as on the deposited molecular solution or suspension. In this paper, we tested six types of surfaces differing in their physico-chemical surface characteristics (contact angles, wettability and roughness) as well as in the presence or absence of a base metal layer...
December 1, 2016: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/27905401/chirped-pulse-amplification-in-an-extreme-ultraviolet-free-electron-laser
#2
David Gauthier, Enrico Allaria, Marcello Coreno, Ivan Cudin, Hugo Dacasa, Miltcho Boyanov Danailov, Alexander Demidovich, Simone Di Mitri, Bruno Diviacco, Eugenio Ferrari, Paola Finetti, Fabio Frassetto, David Garzella, Swen Künzel, Vincent Leroux, Benoît Mahieu, Nicola Mahne, Michael Meyer, Tommaso Mazza, Paolo Miotti, Giuseppe Penco, Lorenzo Raimondi, Primož Rebernik Ribič, Robert Richter, Eléonore Roussel, Sebastian Schulz, Luca Sturari, Cristian Svetina, Mauro Trovò, Paul Andreas Walker, Marco Zangrando, Carlo Callegari, Marta Fajardo, Luca Poletto, Philippe Zeitoun, Luca Giannessi, Giovanni De Ninno
Chirped pulse amplification in optical lasers is a revolutionary technique, which allows the generation of extremely powerful femtosecond pulses in the infrared and visible spectral ranges. Such pulses are nowadays an indispensable tool for a myriad of applications, both in fundamental and applied research. In recent years, a strong need emerged for light sources producing ultra-short and intense laser-like X-ray pulses, to be used for experiments in a variety of disciplines, ranging from physics and chemistry to biology and material sciences...
December 1, 2016: Nature Communications
https://www.readbyqxmd.com/read/27905281/identification-of-acanthamoeba-genotypes-in-pools-and-stagnant-water-in-ponds-in-sistan-region-in-southeast-iran
#3
Ali Aghajani, Mansour Dabirzadeh, Yahya Maroufi, Hossein Hooshyar
OBJECTIVE: Acanthamoeba is one of the most abundant free-living amoebas that is widely distributed in natural and artificial environment resources. Acanthamoeba pathogenic genotypes cause chronic human diseases including amoebic keratitis and granulomatous amoebic encephalitis. The aim of this study was to determine and identify Acanthamoeba genotypes residing in pools and stagnant water in ponds in Sistan region in southeast Iran. This descriptive study was conducted at the Parasitology Laboratory, School of Medicine, Zabol University of Medical Sciences...
September 2016: Türkiye Parazitolojii Dergisi
https://www.readbyqxmd.com/read/27901016/relationships-between-arsenic-concentrations-in-drinking-water-and-lung-and-bladder-cancer-incidence-in-u-s-counties
#4
William M Mendez, Sorina Eftim, Jonathan Cohen, Isaac Warren, John Cowden, Janice S Lee, Reeder Sams
Increased risks of lung and bladder cancer have been observed in populations exposed to high levels of inorganic arsenic. However, studies at lower exposures (i.e., less than 100 μg/l in water) have shown inconsistent results. We therefore conducted an ecological analysis of the association between historical drinking water arsenic concentrations and lung and bladder cancer incidence in U.S. counties. We used drinking water arsenic concentrations measured by the U.S. Geological Survey and state agencies in the 1980s and 1990s as proxies for historical exposures in counties where public groundwater systems and private wells are important sources of drinking water...
November 30, 2016: Journal of Exposure Science & Environmental Epidemiology
https://www.readbyqxmd.com/read/27896684/use-of-spray-dried-dispersions-in-early-pharmaceutical-development-theoretical-and-practical-challenges
#5
Jinjiang Li, Dhaval Patel, George Wang
Spray-dried dispersions (SDDs) have become an important formulation technology for the pharmaceutical product development of poorly water-soluble (PWS) compounds. Although this technology is now widely used in the industry, especially in the early-phase development, the lack of mechanistic understanding still causes difficulty in selecting excipients and predicting stability of SDD-based drug products. In this review, the authors aim to discuss several principles of polymer science pertaining to the development of SDDs, in terms of selecting polymers and solvents, optimizing drug loading, as well as assessing physical stability on storage and supersaturation maintenance after dissolution, from both thermodynamic and kinetic considerations...
November 28, 2016: AAPS Journal
https://www.readbyqxmd.com/read/27891647/a-roadmap-for-improving-the-representation-of-photosynthesis-in-earth-system-models
#6
Alistair Rogers, Belinda E Medlyn, Jeffrey S Dukes, Gordon Bonan, Susanne von Caemmerer, Michael C Dietze, Jens Kattge, Andrew D B Leakey, Lina M Mercado, Ülo Niinemets, I Colin Prentice, Shawn P Serbin, Stephen Sitch, Danielle A Way, Sönke Zaehle
Accurate representation of photosynthesis in terrestrial biosphere models (TBMs) is essential for robust projections of global change. However, current representations vary markedly between TBMs, contributing uncertainty to projections of global carbon fluxes. Here we compared the representation of photosynthesis in seven TBMs by examining leaf and canopy level responses of photosynthetic CO2 assimilation (A) to key environmental variables: light, temperature, CO2 concentration, vapor pressure deficit and soil water content...
January 2017: New Phytologist
https://www.readbyqxmd.com/read/27889365/characterizing-and-modelling-river-channel-migration-rates-at-a-regional-scale-case-study-of-south-east-france
#7
Adrien Alber, Hervé Piégay
An increased awareness by river managers of the importance of river channel migration to sediment dynamics, habitat complexity and other ecosystem functions has led to an advance in the science and practice of identifying, protecting or restoring specific erodible corridors across which rivers are free to migrate. One current challenge is the application of these watershed-specific goals at the regional planning scales (e.g., the European Water Framework Directive). This study provides a GIS-based spatial analysis of the channel migration rates at the regional-scale...
November 23, 2016: Journal of Environmental Management
https://www.readbyqxmd.com/read/27889353/review-on-fate-and-mechanism-of-removal-of-pharmaceutical-pollutants-from-wastewater-using-biological-approach
#8
REVIEW
Bhagyashree Tiwari, Balasubramanian Sellamuthu, Yassine Ouarda, Patrick Drogui, Rajeshwar D Tyagi, Gerardo Buelna
Due to research advancement and discoveries in the field of medical science, maintains and provides better human health and safer life, which lead to high demand for production of pharmaceutical compounds with a concomitant increase in population. These pharmaceutical (biologically active) compounds were not fully metabolized by the body and excreted out in wastewater. This micro-pollutant remains unchanged during wastewater treatment plant operation and enters into the receiving environment via the discharge of treated water...
November 15, 2016: Bioresource Technology
https://www.readbyqxmd.com/read/27882966/plant-science-a-war-over-water-when-bacteria-invade-leaves
#9
COMMENT
Gwyn A Beattie
No abstract text is available yet for this article.
November 23, 2016: Nature
https://www.readbyqxmd.com/read/27882211/novel-perspectives-on-the-role-of-the-human-microbiota-in-regenerative-medicine-and-surgery
#10
Tommaso Pellegatta, Marco Saler, Viola Bonfanti, Giovanni Nicoletti, Angela Faga
Plastic surgery is transitioning from a fine craftsmanship to a regenerative science. In wound healing, the role of microorganisms is no longer considered to be just counteracting, but also promoting. Furthermore, host-microbe interactions are essential for numerous aspects of normal mammalian physiology, from metabolic activity to immune homeostasis. Each area of the human body hosts a unique microbial community, and the composition of microbiota is dependent on the host, age and the anatomical area, and it changes according to the characteristics of the microenvironment...
November 2016: Biomedical Reports
https://www.readbyqxmd.com/read/27881142/ethnoagroforestry-integration-of-biocultural-diversity-for-food-sovereignty-in-mexico
#11
Ana Isabel Moreno-Calles, Alejandro Casas, Alexis Daniela Rivero-Romero, Yessica Angélica Romero-Bautista, Selene Rangel-Landa, Roberto Alexander Fisher-Ortíz, Fernando Alvarado-Ramos, Mariana Vallejo-Ramos, Dídac Santos-Fita
BACKGROUND: Documenting the spectrum of ecosystem management, the roles of forestry and agricultural biodiversity, TEK, and human culture for food sovereignty, are all priority challenges for contemporary science and society. Ethnoagroforestry is a research approach that provides a theoretical framework integrating socio-ecological disciplines and TEK. We analyze in this study general types of Agroforestry Systems of México, in which peasants, small agriculturalist, and indigenous people are the main drivers of AFS and planning of landscape diversity use...
November 23, 2016: Journal of Ethnobiology and Ethnomedicine
https://www.readbyqxmd.com/read/27876949/new-occurrence-of-parasitic-isopod-argathona-sp-stebbing-1905-from-epinephelus-undulosus-in-the-tuticorin-coast-gulf-of-mannar-region
#12
Gurusamy Chelladurai, Srinivasan Balakrishanan, Ganapathy Rameshkumar, Kannan Banumathi
In the present study of Epinephelus undulosus captured in gillnets from the inshore waters of Tuticorin, Gulf of Mannar region during December 2014. The present findings represent the first occurrence of Argathona sp. and here in reported. The materials examined were deposited at the Kamaraj College, Marine Biological Research Laboratory, Tuticorin, India. The parasitological indexes were calculated. The site of attachment of the parasites on their hosts was also observed. Host-parasite relationships are considered and these parasites can cause the damage in gill, eye and internal organ including swim bladder...
December 2016: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/27876141/sers-as-an-analytical-tool-in-environmental-science-the-detection-of-sulfamethoxazole-in-the-nanomolar-range-by-applying-a-microfluidic-cartridge-setup
#13
Sophie Patze, Uwe Huebner, Falk Liebold, Karina Weber, Dana Cialla-May, Juergen Popp
Sulfamethoxazole (SMX) is a commonly applied antibiotic for treating urinary tract infections; however, allergic reactions and skin eczema are known side effects that are observed for all sulfonamides. Today, this molecule is present in drinking and surface water sources. The allowed concentration in tap water is 2·10(-7) mol L(-1). SMX could unintentionally be ingested by healthy people when drinking contaminated tap water, representing unnecessary drug intake. To assess the quality of tap water, fast, specific and sensitive detection methods are required, in which consequence measures for improving the purification of water might be initiated in the short term...
January 1, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/27869769/zebrafish-a-model-for-the-study-of-toxicants-affecting-muscle-development-and-function
#14
REVIEW
Magda Dubińska-Magiera, Małgorzata Daczewska, Anna Lewicka, Marta Migocka-Patrzałek, Joanna Niedbalska-Tarnowska, Krzysztof Jagla
The rapid progress in medicine, agriculture, and allied sciences has enabled the development of a large amount of potentially useful bioactive compounds, such as drugs and pesticides. However, there is another side of this phenomenon, which includes side effects and environmental pollution. To avoid or minimize the uncontrollable consequences of using the newly developed compounds, researchers seek a quick and effective means of their evaluation. In achieving this goal, the zebrafish (Danio rerio) has proven to be a highly useful tool, mostly because of its fast growth and development, as well as the ability to absorb the molecules diluted in water through its skin and gills...
November 19, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27867503/the-croprotect-project-and-wider-opportunities-to-improve-farm-productivity-through-web-based-knowledge-exchange
#15
REVIEW
Toby J A Bruce
A key global 21st century challenge is to maximize agricultural production while minimizing use of resources such as land, water, and energy to meet rising demand for produce. To meet this challenge, while also adapting to climate change, agriculture will have to become more knowledge intensive and deploy smarter farming techniques. The intention of this study was to: (1) Highlight the opportunity for web-based knowledge exchange to increase farm productivity and thus contribute to achieving food and energy security, (2) Give some examples of online farming information services such as the "CROPROTECT" tool I am developing in the UK, the CABI "Plantwise" Knowledge Bank and the IRRI "Rice Doctor," and (3) Consider lessons learnt so far...
May 2016: Food and energy security
https://www.readbyqxmd.com/read/27867310/the-north-wyke-farm-platform-effect-of-temperate-grassland-farming-systems-on-soil-moisture-contents-runoff-and-associated-water-quality-dynamics
#16
R J Orr, P J Murray, C J Eyles, M S A Blackwell, L M Cardenas, A L Collins, J A J Dungait, K W T Goulding, B A Griffith, S J Gurr, P Harris, J M B Hawkins, T H Misselbrook, C Rawlings, A Shepherd, H Sint, T Takahashi, K N Tozer, A P Whitmore, L Wu, M R F Lee
: The North Wyke Farm Platform was established as a United Kingdom national capability for collaborative research, training and knowledge exchange in agro-environmental sciences. Its remit is to research agricultural productivity and ecosystem responses to different management practices for beef and sheep production in lowland grasslands. A system based on permanent pasture was implemented on three 21-ha farmlets to obtain baseline data on hydrology, nutrient cycling and productivity for 2 years...
July 2016: European Journal of Soil Science
https://www.readbyqxmd.com/read/27863805/computational-dehydration-of-crystalline-hydrates-using-molecular-dynamics-simulations
#17
Anders S Larsen, Jukka Rantanen, Kristoffer E Johansson
Molecular dynamics (MD) simulations have evolved to an increasingly reliable and accessible technique and are today implemented in many areas of biomedical sciences. We present a generally applicable method to study dehydration of hydrates based on MD simulations and apply this approach to the dehydration of ampicillin trihydrate. The crystallographic unit cell of the trihydrate is used to construct the simulation cell containing 216 ampicillin and 648 water molecules. This system is dehydrated by removing water molecules during a 2200 ps simulation, and depending on the computational dehydration rate, different dehydrated structures were observed...
November 15, 2016: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/27843109/non-cholera-vibrios-the-microbial-barometer-of-climate-change
#18
REVIEW
Craig Baker-Austin, Joaquin Trinanes, Narjol Gonzalez-Escalona, Jaime Martinez-Urtaza
There is a growing interest in the role of climate change in driving the spread of waterborne infectious diseases, such as those caused by bacterial pathogens. One particular group of pathogenic bacteria - vibrios - are a globally important cause of diseases in humans and aquatic animals. These Gram-negative bacteria, including the species Vibrio vulnificus, Vibrio parahaemolyticus and Vibrio cholerae, grow in warm, low-salinity waters, and their abundance in the natural environment mirrors ambient environmental temperatures...
November 11, 2016: Trends in Microbiology
https://www.readbyqxmd.com/read/27842964/hygroscopic-behavior-of-water-soluble-matter-in-marine-aerosols-over-the-east-china-sea
#19
Yu Yan, Pingqing Fu, Bo Jing, Chao Peng, S K R Boreddy, Fan Yang, Lianfang Wei, Yele Sun, Zifa Wang, Maofa Ge
In this study, we investigated hygroscopic properties of water-soluble matter (WSM) in marine aerosols over the East China Sea, which were collected during a Natural Science Foundation of China (NSFC) sharing cruise in 2014. Hygroscopic growth factors (g) of WSM were measured by a hygroscopicity tandem differential mobility analyzer (H-TDMA) with an initial dry particle mobility diameter of 100nm. The observed g at 90% relative humidity (RH), g(90%)WSM, defined as the ratio of the particle diameter at 90% RH to that at RH<5% (initial dry diameter), ranged from 1...
November 11, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27833599/physiological-ecology-of-microorganisms-in-subglacial-lake-whillans
#20
Trista J Vick-Majors, Andrew C Mitchell, Amanda M Achberger, Brent C Christner, John E Dore, Alexander B Michaud, Jill A Mikucki, Alicia M Purcell, Mark L Skidmore, John C Priscu
Subglacial microbial habitats are widespread in glaciated regions of our planet. Some of these environments have been isolated from the atmosphere and from sunlight for many thousands of years. Consequently, ecosystem processes must rely on energy gained from the oxidation of inorganic substrates or detrital organic matter. Subglacial Lake Whillans (SLW) is one of more than 400 subglacial lakes known to exist under the Antarctic ice sheet; however, little is known about microbial physiology and energetics in these systems...
2016: Frontiers in Microbiology
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