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https://www.readbyqxmd.com/read/28932831/smart-supramolecular-sensing-with-cucurbit-n-urils-probing-hydrogen-bonding-with-sers
#1
Bart de Nijs, Marlous Kamp, Istvan Szabó, Steven J Barrow, Felix Benz, Guanglu Wu, Cloudy Carnegie, Rohit Chikkaraddy, Wenting Wang, William M Deacon, Edina Rosta, Jeremy J Baumberg, Oren A Scherman
Rigid gap nano-aggregates of Au nanoparticles formed using cucurbit[n]uril (CB[n]) molecules are used to investigate the competitive binding of ethanol and methanol in an aqueous environment. We show it is possible to detect as little as 0.1% methanol in water and a ten times higher affinity to methanol over ethanol, making this a useful technology for quality control in alcohol production. We demonstrate strong interaction effects in the SERS peaks, which we demonstrate are likely from the hydrogen bonding of water complexes in the vicinity of the CB[n]s...
September 21, 2017: Faraday Discussions
https://www.readbyqxmd.com/read/28931181/-refractive-lens-exchange
#2
Fritz H Hengerer, Ina Conrad-Hengerer
In refractive surgery the removal of the natural lens followed by implantation of an artificial intraocular lens has been an established method to treat refractive errors. The term "clear lens exchange" separates this approach from cataract surgery, where a cloudy lens has to be removed. With regard to currently available intraocular lens technologies, there is a wide range to correct myopia, hyperopia as well as astigmatism. Trifocal or extended depth-of-focus lenses (EDOF) even with a toric component offer the patients a potential benefit to further address presbyopia, respectively...
September 20, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28904686/-rare-and-severe-complication-of-spinal-anesthesia-bacterial-meningitis-about-a-case-and-literature-review
#3
Naoufal Chouaib, Said Jidane, Mostafa Rafai, Ahmed Belkouch, Saad Zidouh, Lahcen Belyamani
Spinal anesthesia (SA) is the first locoregional anesthesia. It can cause side effects and carry risks that need to be avoided, prevented or treated early. We here report the case of a female patient operated under spinal anesthesia who had intense headache associated with nausea and vomiting evolving in the context of fever within a few days after surgeryLumbar puncture showed cloudy liquid revealing Gram + cocci on direct examination. This allowed the diagnosis of bacterial meningitis. Patient's evolution was favorable after antibiotic therapy...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28904097/network-approach-to-patterns-in-stratocumulus-clouds
#4
Franziska Glassmeier, Graham Feingold
Stratocumulus clouds (Sc) have a significant impact on the amount of sunlight reflected back to space, with important implications for Earth's climate. Representing Sc and their radiative impact is one of the largest challenges for global climate models. Sc fields self-organize into cellular patterns and thus lend themselves to analysis and quantification in terms of natural cellular networks. Based on large-eddy simulations of Sc fields, we present a first analysis of the geometric structure and self-organization of Sc patterns from this network perspective...
September 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28902010/posterior-amorphous-corneal-dystrophy-associated-with-keratoglobus-a-case-report
#5
Jonathan Fay, Alexandra A Herzlich, George J Florakis
PURPOSE: Posterior amorphous corneal dystrophy (PACD) is a rare disorder characterized by sheet-like opacification of the posterior corneal stroma, corneal thinning, and decreased corneal curvature. It is not known to be associated with progressive corneal ectasia. In this report, we examine the course of a patient with PACD who developed bilateral keratoglobus-type corneal ectasia. METHODS: The clinical history of a single patient is reviewed from birth through age 15...
September 8, 2017: Cornea
https://www.readbyqxmd.com/read/28895832/sunny-for-florida-blue-but-it-s-partly-cloudy-in-sunshine-state
#6
Susan Ladika
The ACA drove down the uninsured rate despite the lack of Medicare expansion, but major insurers have left the market. In some rural areas, Florida Blue is the only health plan in the game. Also in the mix: Consumers here usually pick the lowest-cost plan available.
July 2017: Managed Care
https://www.readbyqxmd.com/read/28890836/new-diagnosis-of-aids-based-on-salmonella-enterica-subsp-i-enterica-enteritidis-a-meningitis-in-a-previously-immunocompetent-adult-in-the-united-states
#7
Andrew C Elton, James Levin, Matthew P Lazio
Salmonella meningitis is a rare manifestation of meningitis typically presenting in neonates and the elderly. This infection typically associates with foodborne outbreaks in developing nations and AIDS-endemic regions. We report a case of a 19-year-old male presenting with altered mental status after 3-day absence from work at a Wisconsin tourist area. He was febrile, tachycardic, and tachypneic with a GCS of 8. The patient was intubated and a presumptive diagnosis of meningitis was made. Treatment was initiated with ceftriaxone, vancomycin, acyclovir, dexamethasone, and fluid resuscitation...
2017: Case Reports in Infectious Diseases
https://www.readbyqxmd.com/read/28888104/effects-of-ultraviolet-light-emitting-diodes-leds-on-microbial-and-enzyme-inactivation-of-apple-juice
#8
Merve Pelvan Akgün, Sevcan Ünlütürk
In this study, the effects of Ultraviolet light-emitting diodes (UV-LEDs) on the inactivation of E. coli K12 (ATCC 25253), an indicator organism of E. coli O157:H7, and polyphneoloxidase (PPO) in cloudy apple juice (CAJ) were investigated. The clear (AJ) and cloudy apple juice were exposed to UV rays for 40min by using a UV device composed of four UV-LEDs with peak emissions at 254 and 280nm and coupled emissions as follows: 254/365, 254/405, 280/365, 280/405 and 254/280/365/405nm. UV-LEDs at 254nm achieved 1...
August 15, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28872426/enhancing-quality-practice-for-prevention-and-diagnosis-of-urinary-tract-infection-during-inpatient-spinal-cord-rehabilitation
#9
Seyed Mohammad Alavinia, Maryam Omidvar, Farnoosh Farahani, Mark Bayley, Joana Zee, Beverley Catharine Craven
Objectives To reduce the incidence of Urinary Tract Infection (UTI) in subacute SCI individuals admitted for tertiary inpatient rehabilitation. Design A quality improvement team was assembled to improve UTI prevention/diagnosis. To plan data collection, UTI-related factors were mapped in an Ishikawa (fishbone) driver diagram. Data including patient demographics, presence and frequency of signs and/or symptoms of UTI and antibiotic initiation from August to December 2015 were recorded. Sensitivity, Specificity, Positive and Negative Predictive Values (PPV, NPV), and Likelihood Ratios (LR) were calculated for each sign and symptom...
September 5, 2017: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/28871020/intermittent-catheter-users-symptom-identification-description-and-management-of-urinary-tract-infection-a-qualitative-study
#10
Ikumi Okamoto, Jacqui Prieto, Miriam Avery, Katherine Moore, Mandy Fader, Samantha Sartain, Bridget Clancy
OBJECTIVES: To elucidate the views of intermittent catheter (IC) users regarding urinary tract infection (UTI) symptom presentation, terminology for describing signs and symptoms, the cause of UTI and management strategies. DESIGN: Qualitative study with semi-structured interviews. The transcribed text was analysed thematically. SETTING: 12 general practitioner (GP) surgeries in Hampshire and Dorset, UK. PARTICIPANTS: A convenience sample of 30 IC users, aged over 18, using IC for at least 3 months who had at least one self-reported UTI since starting IC...
September 3, 2017: BMJ Open
https://www.readbyqxmd.com/read/28842023/portable-kit-for-high-throughput-analysis-of-polycyclic-aromatic-hydrocarbons-using-surface-enhanced-raman-scattering-after-dispersive-liquid-liquid-microextraction
#11
Min Zhang, Xiaoli Zhang, Baofeng Qu, Jinhua Zhan
In this work, a portable kit was developed for convenient high-throughput trace analysis of polycyclic aromatic hydrocarbons (PAHs) using surface enhanced Raman scattering (SERS) after dispersive liquid-liquid microextraction (DLLME) process. This portable kit contains three sealed reagent tubes (labeled as T1, T2 and T3), a self-made well plate, and a portable Raman spectrometer. The reagent tube T1 contains a mixture of disperser solvent and extraction solvent, which involved a 2min sample pretreatment of DLLME process...
December 1, 2017: Talanta
https://www.readbyqxmd.com/read/28842003/cyclohexylamine-as-extraction-solvent-and-chelating-agent-in-extraction-and-preconcentration-of-some-heavy-metals-in-aqueous-samples-based-on-heat-induced-homogeneous-liquid-liquid-extraction
#12
Saeed Mohammad Sorouraddin, Mir Ali Farajzadeh, Tohid Okhravi
A new sample preparation method has been developed for extraction and preconcentration of some heavy metal cations in aqueous samples using cyclohexylamine-based homogeneous liquid-liquid microextraction. In the proposed method, cyclohexylamine was used as both the complexing agent and the extraction solvent. For this purpose, cyclohexylamine at µL level was initially added into an aqueous solution containing Co(II), Ni(II), and Cu(II) ions which was placed in a glass test tube. The mixture was shaken for forming a homogeneous solution...
December 1, 2017: Talanta
https://www.readbyqxmd.com/read/28814806/enhanced-wintertime-greenhouse-effect-reinforcing-arctic-amplification-and-initial-sea-ice-melting
#13
Yunfeng Cao, Shunlin Liang, Xiaona Chen, Tao He, Dongdong Wang, Xiao Cheng
The speeds of both Arctic surface warming and sea-ice shrinking have accelerated over recent decades. However, the causes of this unprecedented phenomenon remain unclear and are subjects of considerable debate. In this study, we report strong observational evidence, for the first time from long-term (1984-2014) spatially complete satellite records, that increased cloudiness and atmospheric water vapor in winter and spring have caused an extraordinary downward longwave radiative flux to the ice surface, which may then amplify the Arctic wintertime ice-surface warming...
August 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28807092/extraction-and-determination-of-trace-amounts-of-p-coumaric-acid-in-vinegar-carrot-juice-and-seed-extract-from-silybum-marianum-l-gaertn
#14
Rouhollah Khani, Zeinab Rostami, Ghodsieh Bagherzade, Vahid Khojeh
In this study, for the monitoring and quantification of p-coumaric acid (p-CA) in vinegar, carrot juice, and seed extract from the plant species Silybum marianum (L.) Gaertn, an efficient and low-cost analytical method has been applied. For this purpose, a dispersive liquid-liquid microextraction (DLLME) method, followed by UV-Vis spectrophotometric detection, was used. To form a cloudy solution, a binary mixture containing ethanol as a disperser solvent and chloroform as an extraction solvent was rapidly injected by syringe into a sample solution containing p-CA...
August 10, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28802218/pharmaceutical-and-biomedical-applications-of-dispersive-liquid-liquid-microextraction
#15
REVIEW
Fotouh R Mansour, Mostafa A Khairy
Sample treatment is so crucial in pharmaceutical and biomedical analysis. Proper sample preparation protects the analytical instrument, increases the sensitivity, and enhances the selectivity by removing probable interfering substances. Dispersive liquid-liquid microextraction (DLLME) is one of the most important approaches in sample treatment. In normal DLLME, the organic droplet of the extractant is mixed with a dispersing solvent before being injected into the sample. After manual or mechanical shaking, the cloudy solution is centrifuged to break the formed emulsion...
September 1, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28802105/combined-influence-of-multiple-climatic-factors-on-the-incidence-of-bacterial-foodborne-diseases
#16
Myoung Su Park, Ki Hwan Park, Gyung Jin Bahk
Information regarding the relationship between the incidence of foodborne diseases (FBD) and climatic factors is useful in designing preventive strategies for FBD based on anticipated future climate change. To better predict the effect of climate change on foodborne pathogens, the present study investigated the combined influence of multiple climatic factors on bacterial FBD incidence in South Korea. During 2011-2015, the relationships between 8 climatic factors and the incidences of 13 bacterial FBD, were determined based on inpatient stays, on a monthly basis using the Pearson correlation analyses, multicollinearity tests, principal component analysis (PCA), and the seasonal autoregressive integrated moving average (SARIMA) modeling...
August 9, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28794295/foreign-body-reaction-to-dialysis-chatheter-and-peritoneal-fluid-eosinophilia-in-a-child-on-continuous-ambulatory-peritoneal-dialysis
#17
Nuran Cetin, Nadide Melike Sav, Evrim Ciftci, Bilal Yildiz
Foreign body reaction is a tissue response against implanted materials. We described for the first time the eosinophilic peritonitis and foreign body giant cell reaction to dialysis catheter in a nonatopic child on continuous ambulatory peritoneal dialysis. We found tenderness, redness, and swelling without purulent discharge around the peritoneal catheter; increased eosinophil count in cloudy dialysis fluid; and blood and hyperechoic granulomatous formation appearance surrounding the peritoneal catheter on ultrasonography and foreign body giant cell reaction to dialysis catheter in pathologic examination of granulomatous lesionin in our patient...
July 2017: Iranian Journal of Kidney Diseases
https://www.readbyqxmd.com/read/28774457/conventional-radiology-in-crystal-arthritis-gout-calcium-pyrophosphate-deposition-and-basic-calcium-phosphate-crystals
#18
REVIEW
Thibaut Jacques, Paul Michelin, Sammy Badr, Michelangelo Nasuto, Guillaume Lefebvre, Neal Larkman, Anne Cotten
This article reviews the main radiographic features of crystal deposition diseases. Gout is linked to monosodium urate crystals. Classic radiographic features include subcutaneous tophi, large and well-circumscribed paraarticular bone erosions, and exuberant bone hyperostosis. Calcium pyrophosphate deposition (CPPD) can involve numerous structures, such as hyaline cartilages, fibrocartilages, or tendons. CPPD arthropathy involves joints usually spared by osteoarthritis. Basic calcium phosphate deposits are periarticular or intraarticular...
September 2017: Radiologic Clinics of North America
https://www.readbyqxmd.com/read/28751661/imaging-and-mapping-the-impact-of-clouds-on-skyglow-with-all-sky-photometry
#19
Andreas Jechow, Zoltán Kolláth, Salvador J Ribas, Henk Spoelstra, Franz Hölker, Christopher C M Kyba
Artificial skyglow is constantly growing on a global scale, with potential ecological consequences ranging up to affecting biodiversity. To understand these consequences, worldwide mapping of skyglow for all weather conditions is urgently required. In particular, the amplification of skyglow by clouds needs to be studied, as clouds can extend the reach of skyglow into remote areas not affected by light pollution on clear nights. Here we use commercial digital single lens reflex cameras with fisheye lenses for all-sky photometry...
July 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28745814/ocular-localization-of-mycobacterial-lesions-in-tank-reared-juvenile-cobia-rachycentron-canadum
#20
A C N Phillips, R Suepaul, E Soto
Severe clinical mycobacteriosis with consistent ocular lesion localization was diagnosed in a population of 800 juvenile tank-reared Cobia (Rachycentron canadum) which experienced a sudden increase in mortality approximately 5 months after arriving into Trinidad and Tobago from Florida, USA. Moderate daily mortality (15-20 animals per day) persisted for just over 1 month. Moribund fish displayed circling behaviour and had an open-mouth gape upon death. Fish consistently presented with bilateral exophthalmia, corneal cloudiness and hyphema...
July 26, 2017: Journal of Fish Diseases
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