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https://www.readbyqxmd.com/read/28625062/bioinspired-hand-operating-smart-wetting-systems-using-smooth-liquid-coatings
#1
Mizuki Tenjimbayashi, Takeshi Matsubayashi, Takeo Moriya, Seimei Shiratori
Manually controllable 'hand-operating' smart systems have been developed in many fields, including smart wetting materials, electronic devices, molecular machines, and drug delivery systems. Because complex morphological or chemical control are generally required, versatile strategies for constructing the system are technologically important. Inspired by the natural phenomenon of raindrops rarely bouncing and usually spreading on a puddle, we introduce a droplet-impact-triggering smart-wetting system using "non-smart" smooth liquid coating materials...
June 19, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28605128/tiny-insects-against-the-weather-flight-and-foraging-patterns-of-frankliniella-schultzei-thripidae-not-altered-by-onset-of-rainfall
#2
Lachlan C Jones, Brodie J Foster, Michelle A Rafter, Gimme H Walter
To survive in nature, organisms may need to take direct action to mitigate specific dangers from their environmental surroundings. Tiny flying insects are thought to be at particular risk from rainfall that would be of negligible concern to larger animals. The study species Frankliniella schultzei is a thrips that inhabits flowers and feeds mostly on petal tissue and pollen. While found to respond in the laboratory to decreases in atmospheric pressure associated with cyclonic conditions (rather than merely heavy rainfall), their responses to conditions preceding rainfall have not been tested in the field...
June 12, 2017: Insect Science
https://www.readbyqxmd.com/read/28505774/crater-formation-during-raindrop-impact-on-sand
#3
Rianne de Jong, Song-Chuan Zhao, Devaraj van der Meer
After a raindrop impacts on a granular bed, a crater is formed as both drop and target deform. After an initial, transient, phase in which the maximum crater depth is reached, the crater broadens outwards until a final steady shape is attained. By varying the impact velocity of the drop and the packing density of the bed, we find that avalanches of grains are important in the second phase and hence affect the final crater shape. In a previous paper, we introduced an estimate of the impact energy going solely into sand deformation and here we show that both the transient and final crater diameter collapse with this quantity for various packing densities...
April 2017: Physical Review. E
https://www.readbyqxmd.com/read/28447798/spontaneous-droplet-motion-on-a-periodically-compliant-substrate
#4
Tianshu Liu, Nichole Nadermann, Zhenping He, Steven H Strogatz, Chung-Yuen Hui, Anand Jagota
Droplet motion arises in many natural phenomena, ranging from the familiar gravity-driven slip and arrest of raindrops on windows to the directed transport of droplets for water harvesting by plants and animals under dry conditions. Deliberate transportation and manipulation of droplets are also important in many technological applications, including droplet-based microfluidic chemical reactors and for thermal management. Droplet motion usually requires gradients of surface energy or temperature or external vibration to overcome contact angle hysteresis...
May 8, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28416944/evaluation-of-digital-pcr-as-a-technique-for-monitoring-acute-rejection-in-kidney-transplantation
#5
Hyeseon Lee, Young-Mi Park, Yu-Mee We, Duck Jong Han, Jung-Woo Seo, Haena Moon, Yu-Ho Lee, Yang-Gyun Kim, Ju-Young Moon, Sang-Ho Lee, Jong-Keuk Lee
Early detection and proper management of kidney rejection are crucial for the long-term health of a transplant recipient. Recipients are normally monitored by serum creatinine measurement and sometimes with graft biopsies. Donor-derived cell-free deoxyribonucleic acid (cfDNA) in the recipient's plasma and/or urine may be a better indicator of acute rejection. We evaluated digital PCR (dPCR) as a system for monitoring graft status using single nucleotide polymorphism (SNP)-based detection of donor DNA in plasma or urine...
March 2017: Genomics & Informatics
https://www.readbyqxmd.com/read/28390052/a-review-of-presbyopia-treatment-with-corneal-inlays
#6
REVIEW
M Amir Moarefi, Shamik Bafna, William Wiley
The prevalence of presbyopia continues to increase every year. The therapeutic approaches to presbyopia cover the spectrum of non-surgical to surgical techniques. With recent advances in biocompatible materials, corneal inlays make a strong case for their place within the treatment spectrum. This article takes a closer look at three of the current corneal inlay models: KAMRA, Raindrop, and Presbia Flexivue Microlens. Each design approach and mode of action is described with data from key clinical trials. Furthermore, the ability to choose the most suitable corneal inlay is presented by comparing each model and identifying their similarities and differences...
June 2017: Ophthalmology and Therapy
https://www.readbyqxmd.com/read/28267145/bioaerosol-generation-by-raindrops-on-soil
#7
Young Soo Joung, Zhifei Ge, Cullen R Buie
Aerosolized microorganisms may play an important role in climate change, disease transmission, water and soil contaminants, and geographic migration of microbes. While it is known that bioaerosols are generated when bubbles break on the surface of water containing microbes, it is largely unclear how viable soil-based microbes are transferred to the atmosphere. Here we report a previously unknown mechanism by which rain disperses soil bacteria into the air. Bubbles, tens of micrometres in size, formed inside the raindrops disperse micro-droplets containing soil bacteria during raindrop impingement...
March 7, 2017: Nature Communications
https://www.readbyqxmd.com/read/28211715/liquid-grain-mixing-suppresses-droplet-spreading-and-splashing-during-impact
#8
Song-Chuan Zhao, Rianne de Jong, Devaraj van der Meer
Would a raindrop impacting on a coarse beach behave differently from that impacting on a desert of fine sand? We study this question by a series of model experiments, where the packing density of the granular target, the wettability of individual grains, the grain size, the impacting liquid, and the impact speed are varied. We find that by increasing the grain size and/or the wettability of individual grains the maximum droplet spreading undergoes a transition from a capillary regime towards a viscous regime, and splashing is suppressed...
February 3, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28199898/differential-release-of-manure-borne-bioactive-phosphorus-forms-to-runoff-and-leachate-under-simulated-rain
#9
R A Blaustein, Thanh H Dao, Y A Pachepsky, D R Shelton
Limited information exists on the unhindered release of bioactive phosphorus (P) from a manure layer to model the partitioning and transport of component P forms before they reach an underlying soil. Rain simulations were conducted to quantify effects of intensity (30, 60, and 90 mm h(-1)) on P release from an application of 60 Mg ha(-1) of dairy manure. Runoff contained water-extractable- (WEP), exchangeable and enzyme-labile bioactive P (TBIOP), in contrast to the operationally defined "dissolved-reactive P" form...
May 1, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28119004/contribution-of-raindrop-impact-to-the-change-of-soil-physical-properties-and-water-erosion-under-semi-arid-rainfalls
#10
Ali Reza Vaezi, Morvarid Ahmadi, Artemi Cerdà
Soil erosion by water is a three-phase process that consists of detachment of soil particles from the soil mass, transportation of detached particles either by raindrop impact or surface water flow, and sedimentation. Detachment by raindrops is a key component of the soil erosion process. However, little information is available on the role of raindrop impact on soil losses in the semi-arid regions where vegetation cover is often poor and does not protect the soil from rainfall. The objective of this study is to determine the contribution of raindrop impact to changes in soil physical properties and soil losses in a semiarid weakly-aggregated agricultural soil...
January 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28118137/effect-of-source-of-dna-on-the-quantitative-analysis-of-genetically-engineered-traits-using-digital-pcr-and-real-time-pcr
#11
Tigst Demeke, Jemima Malabanan, Michelle Holigroski, Monika Eng
Seven commercially available DNA extraction kits were compared with a cetyltrimethylammonium bromide (CTAB) method to determine the suitability of the extracted DNA for RainDrop digital PCR (dPCR) and real-time PCR (RT-PCR) quantification of OXY235 canola, FP967 flax, and DP305423 soybean (spiked at the 0.1% level). For the kits, the highest amount of DNA extracted from a 0.2 g sample was obtained using OmniPrep for Plant for flax and DNeasy mericon Food for canola and soybean. For canola, DNA extracted with the Fast ID Genomic DNA Extraction Kit, FastDNA Spin Kit, GM Quicker 2, NucleoSpin Food, and DNeasy mericon Food was suitable for dPCR and RT-PCR...
March 1, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/27990347/digital-pcr-dynamic-range-is-approaching-that-of-real-time-quantitative-pcr
#12
Gerwyn M Jones, Eloise Busby, Jeremy A Garson, Paul R Grant, Eleni Nastouli, Alison S Devonshire, Alexandra S Whale
Digital PCR (dPCR) has been reported to be more precise and sensitive than real-time quantitative PCR (qPCR) in a variety of models and applications. However, in the majority of commercially available dPCR platforms, the dynamic range is dependent on the number of partitions analysed and so is typically limited to four orders of magnitude; reduced compared with the typical seven orders achievable by qPCR. Using two different biological models (HIV DNA analysis and KRAS genotyping), we have demonstrated that the RainDrop Digital PCR System (RainDance Technologies) is capable of performing accurate and precise quantification over six orders of magnitude thereby approaching that achievable by qPCR...
December 2016: Biomolecular Detection and Quantification
https://www.readbyqxmd.com/read/27979961/rt-qpcr-and-rt-digital-pcr-a-comparison-of-different-platforms-for-the-evaluation-of-residual-disease-in-chronic-myeloid-leukemia
#13
COMPARATIVE STUDY
Mary Alikian, Alexandra S Whale, Susanna Akiki, Kim Piechocki, Celia Torrado, Thet Myint, Simon Cowen, Michael Griffiths, Alistair G Reid, Jane Apperley, Helen White, Jim F Huggett, Letizia Foroni
BACKGROUND: Tyrosine kinase inhibitors (TKIs) are the cornerstone of successful clinical management of patients with chronic myeloid leukemia (CML). Quantitative monitoring of the percentage of the fusion transcript BCR-ABL1 (breakpoint cluster region-c-abl oncogene 1, non-receptor tyrosine kinase) BCR-ABL1(IS) (%BCR-ABL1(IS)) by reverse transcription-quantitative PCR (RT-qPCR) is the gold standard strategy for evaluating patient response to TKIs and classification into prognostic subgroups...
February 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/27935271/self-powered-random-number-generator-based-on-coupled-triboelectric-and-electrostatic-induction-effects-at-the-liquid-dielectric-interface
#14
Aifang Yu, Xiangyu Chen, Haotian Cui, Libo Chen, Jianjun Luo, Wei Tang, Mingzeng Peng, Yang Zhang, Junyi Zhai, Zhong Lin Wang
Modern cryptography increasingly employs random numbers generated from physical sources in lieu of conventional software-based pseudorandom numbers, primarily owing to the great demand of unpredictable, indecipherable cryptographic keys from true random numbers for information security. Thus, far, the sole demonstration of true random numbers has been generated through thermal noise and/or quantum effects, which suffers from expensive and complex equipment. In this paper, we demonstrate a method for self-powered creation of true random numbers by using triboelectric technology to collect random signals from nature...
December 27, 2016: ACS Nano
https://www.readbyqxmd.com/read/27930796/surgical-correction-of-presbyopic-ametropia-with-non-refractive-transparent-corneal-inlay-and-an-implantable-collamer-lens
#15
Carlos Gutierrez Amoros
PURPOSE: To report the clinical outcomes of two patients implanted with the Raindrop Near Vision Inlay (ReVision Optics, Inc., Lake Forest, CA) to correct for presbyopia and the Visian implantable collamer lens (ICL) (STAAR Surgical, Monrovia, CA) to correct refractive error. METHODS: Case report. RESULTS: Two patients with presbyopic ametropia complained of blurred vision for distance and near. Both patients received a corneal inlay in the non-dominant eye followed by the Raindrop Inlay the following day...
December 1, 2016: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/27810330/foxl2-402c-g-mutation-can-be-identified-in-the-circulating-tumor-dna-of-patients-with-adult-type-granulosa-cell-tumor
#16
Anniina Färkkilä, Melissa K McConechy, Winnie Yang, Aline Talhouk, Ying Ng, Amy Lum, Ryan D Morin, Kevin Bushell, Annika Riska, Jessica N McAlpine, C Blake Gilks, Leila Unkila-Kallio, Mikko Anttonen, David G Huntsman
Adult granulosa cell tumors (AGCTs) of the ovary are molecularly characterized by the pathognomonic FOXL2 402C>G (C134W) mutation. To improve diagnostics and follow-up, we developed a specific digital droplet PCR (ddPCR) assay to detect the FOXL2 mutation in the circulating tumor DNA (ctDNA) of AGCT patients. Optimization of the ddPCR assay was performed using a TaqMan primer/probe with the RainDance RainDrop digital PCR system. The ddPCR assay was performed on circulating cell-free DNA extracted from 120 serial plasma samples collected prospectively from 35 AGCT patients...
January 2017: Journal of Molecular Diagnostics: JMD
https://www.readbyqxmd.com/read/27739638/platinum-alloy-tailored-all-weather-solar-cells-for-energy-harvesting-from-sun-and-rain
#17
Qunwei Tang, Yanyan Duan, Benlin He, Haiyan Chen
Solar cells that can harvest energy in all weathers are promising in solving the energy crisis and environmental problems. The power outputs are nearly zero under dark conditions for state-of-the-art solar cells. To address this issue, we present herein a class of platinum alloy (PtMx , M=Ni, Fe, Co, Cu, Mo) tailored all-weather solar cells that can harvest energy from rain and realize photoelectric conversion under sun illumination. By tuning the stoichiometric Pt/M ratio and M species, the optimized solar cell yields a photoelectric conversion efficiency of 10...
October 14, 2016: Angewandte Chemie
https://www.readbyqxmd.com/read/27697473/changes-in-keratometric-values-and-corneal-high-order-aberrations-after-hydrogel-inlay-implantation
#18
Woong-Joo Whang, Young-Sik Yoo, Choun-Ki Joo, Geunyoung Yoon
PURPOSE: We sought to analyze surgically induced refractive change (SIRC) and change in high-order aberration after Raindrop corneal inlay insertion (ReVision Optics, Lake Forest, CA), and assess the extent to which Raindrop corneal inlay insertion could correct presbyopia. DESIGN: Interventional case series. METHODS: Seventeen patients were included if they had a corneal thickness ≥500 μm and a stable manifest spherical equivalent refraction between 0...
January 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/27625453/diffuse-parenchymal-lung-disease-in-a-case-of-chronic-arsenic-exposure
#19
Somnath Bhattacharya, Atin Dey, Sayantan Saha, Saurav Kar
A 42-year-old housewife, the resident of rural part of West Bengal, presented with gradually progressive exertional dyspnea associated with a dry cough for last 3 years clinical features were suggestive of diffuse parenchymal lung disease (DPLD). Her chest X-ray posteroanterior view and high resolution computed tomography scan of the thorax showed bilateral patchy ground glass opacities and reticulonodular pattern. Search for the etiology revealed classical skin findings of chronic arsenic exposure in the form of generalized darkening and thickening of skin and keratotic lesions over the palms and soles and classical raindrop pigmentation over leg which was present for last 7 years subsequently her bronchoalveolar lavage fluid, hair, nail, and drinking water showed significant amount of arsenic contamination...
September 2016: Lung India: Official Organ of Indian Chest Society
https://www.readbyqxmd.com/read/27609234/effects-of-rainfall-on-oil-droplet-size-and-the-dispersion-of-spilled-oil-with-application-to-douglas-channel-british-columbia-canada
#20
Yongsheng Wu, Charles G Hannah, Pramod Thupaki, Ruping Mo, Brent Law
Raindrops falling on the sea surface produce turbulence. The present study examined the influence of rain-induced turbulence on oil droplet size and dispersion of oil spills in Douglas Channel in British Columbia, Canada using hourly atmospheric data in 2011-2013. We examined three types of oils: a light oil (Cold Lake Diluent - CLD), and two heavy oils (Cold Lake Blend - CLB and Access Western Blend - AWB). We found that the turbulent energy dissipation rate produced by rainfalls is comparable to what is produced by wind-induced wave breaking in our study area...
January 15, 2017: Marine Pollution Bulletin
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