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Activity monitors

Simone Cristoni, Guglielmo Dusi, Paolo Brambilla, Adriana Albini, Matteo Conti, Maura Brambilla, Antonino Bruno, Francesca Digaudio, Luca Ferlin, Valeria Tazzari, Silvia Mengozzi, Simone Barera, Carlos Salier, Tommaso Trenti, Marco Cantu, Luigi Rossi Bernardi, Douglas M Noonan
Electrospray Ionization (EI) and Collision Induced Dissociation tandem mass spectrometry (CID-MS/MS) are usually employed to obtain compound identification through a mass spectra match. Different algorithms have been developed for this purpose (for example the NIST match algorithm). These approaches compare the tandem mass spectra (MS/MS) of the unknown analyte with the MS/MS spectra of known compounds inserted in a database. The compounds are usually identified on the basis of spectral match value associated with a probability of recognition...
October 24, 2016: Journal of Mass Spectrometry: JMS
K Anand, C Tiloke, A Phulukdaree, B Ranjan, A Chuturgoon, S Singh, R M Gengan
The biosynthesis of nanostructured biopalladium nanoparticles (PdNPs) from an aqueous solution of crystalline palladium acetate is reported. For the synthesised PdNPs in solution, an agroforest biomass waste petal of Moringa oleifera derived bis-phthalate was used as natural reducing and biocapping agents. Continuous absorption in the UV region and subsequent brown colour change confirmed the formation of PdNPs. A strong surface plasmon peak for PdNPs occurred at 460nm. PdNPs were characterized by SEM with EDX, FTIR, TEM and DLS...
September 29, 2016: Journal of Photochemistry and Photobiology. B, Biology
S K Jesudoss, J Judith Vijaya, L John Kennedy, P Iyyappa Rajan, Hamad A Al-Lohedan, R Jothi Ramalingam, K Kaviyarasu, M Bououdina
The present work describes the successful synthesize of spinel magnetic ferrite Mn1-xNixFe2O4 (x=0.0, 0.1, 0.2, 0.3, 0.4 & 0.5) nanoparticles via a simple microwave combustion method which was then evaluated for its photocatalytic activity in the degradation of indigo carmine (IC) synthetic dye, a major water pollutant. Our results reveal that the synthesized of Ni(2+) doped MnFe2O4 nanoparticles possess well-crystalline pure cubic spinel phase, exhibit excellent optical and magnetic properties. Further, the photocatalytic performance of the synthesized nanoparticles at different concentration ratios of Ni(2+) ions was monitored by photocatalytic degradation of indigo carmine synthetic dye under UV (λ=365nm) light irradiation...
October 8, 2016: Journal of Photochemistry and Photobiology. B, Biology
Lesley S de Souza, James C Godwin, Mark A Renshaw, Eric Larson
Environmental DNA (eDNA) holds great promise for conservation applications like the monitoring of invasive or imperiled species, yet this emerging technique requires ongoing testing in order to determine the contexts over which it is effective. For example, little research to date has evaluated how seasonality of organism behavior or activity may influence detection probability of eDNA. We applied eDNA to survey for two highly imperiled species endemic to the upper Black Warrior River basin in Alabama, US: the Black Warrior Waterdog (Necturus alabamensis) and the Flattened Musk Turtle (Sternotherus depressus)...
2016: PloS One
Simon R Knight, Leanne Metcalfe, Katriona O'Donoghue, Simon T Ball, Angela Beale, William Beale, Rachel Hilton, Keith Hodkinson, Graham W Lipkin, Fiona Loud, Lorna P Marson, Peter J Morris
BACKGROUND: It has been suggested that the research priorities of those funding and performing research in transplantation may differ from those of end service users such as patients, carers and healthcare professionals involved in day-to-day care. The Kidney Transplant Priority Setting Partnership (PSP) was established with the aim of involving all stakeholders in prioritising future research in the field. METHODS: The PSP methodology is as outlined by the James Lind Alliance...
2016: PloS One
Jianyang Pan, Xingchu Gong, Haibin Qu
A novel quantitative 1H NMR (Q-NMR) combined with HPLC-MS method has been proposed for investigating the degradation process of traditional Chinese medicine (TCM) components. Through this method, in-situ monitoring of dynamics degradation process of lithospermic acid (LA), one of the popular polyphenolic acids in TCM, was realized under low oxygen condition. Additionally, this methodology was proved to be simple, rapid and specific. Degradation kinetic runs have been carried out to systematically investigate the effects of two key environmental factors, initial pH values and temperatures...
2016: PloS One
Hadis Biglari, Reza Sameni
Fetal motility is a widely accepted indicator of the well-being of a fetus. In previous research, it has be shown that fetal motion (FM) is coherent with fetal heart rate accelerations and an indicator for active/rest cycles of the fetus. The most common approach for FM and fetal heart rate (FHR) assessment is by Doppler ultrasound (DUS). While DUS is the most common approach for studying the mechanical activities of the heart, noninvasive fetal electrocardiogram (ECG) and magnetocardiogram (MCG) recording and processing techniques have been considered as a possible competitor (or complement) for the DUS...
October 24, 2016: Physiological Measurement
P Dhakal, V R Bhatt
Diagnosis and management of hematopoietic cell transplant-associated thrombotic microangiopathy (TA-TMA) are very complex and controversial, given multiple ongoing issues and comorbidities in sick transplant recipients. Complement activation via classic and alternative pathways is emerging as a potential pathogenetic mechanism in the development of TA-TMA. Complement-centric diagnostic strategy using functional and genetic tests may possibly support diagnosis, enhance molecular understanding and direct drug development...
October 24, 2016: Bone Marrow Transplantation
Yiming Zhao, Nong Zhang, Guangyao Si
Monitoring of roof activity is a primary measure adopted in the prevention of roof collapse accidents and functions to optimize and support the design of roadways in underground coalmines. However, traditional monitoring measures, such as using mechanical extensometers or electronic gauges, either require arduous underground labor or cannot function properly in the harsh underground environment. Therefore, in this paper, in order to break through this technological barrier, a novel monitoring system for roof safety control in underground coal mining, using fiber Bragg grating (FBG) material as a perceived element and transmission medium, has been developed...
October 21, 2016: Sensors
Zheng Dai, I G Rosen, Chuming Wang, Nancy Barnett, Susan E Luczak
Alcohol researchers/clinicians have two ways to collect subject /patient field data, standard-drink self-report and the breath analyzer, neither of which is passive or accurate because active subject participation is required. Transdermal alcohol sensors have been developed to measure transdermal alcohol concentration (TAC), but they are used primarily as abstinence monitors because converting TAC into more meaningful blood/breath alcohol concentration (BAC/BrAC) is difficult. In this paper, BAC/BrAC is estimated from TAC by first calibrating forward distributed parameter-based convolution models for ethanol transport from the blood through the skin using patient-collected drinking data for a single drinking episode and a nonlinear pharmacokinetic metabolic absorption/elimination model to estimate BAC...
October 1, 2016: Mathematical Biosciences and Engineering: MBE
Yoonbae Oh, Cheonho Park, Do Hyoung Kim, Hojin Shin, Yu Min Kang, Mark DeWaele, Jeyeon Lee, Hoon-Ki Min, Charles D Blaha, Kevin Bennet, In Young Kim, Kendall H Lee, Dong Pyo Jang
Dopamine (DA) modulates central neuronal activity through both phasic (second to second) and tonic (minutes to hours) terminal release. Conventional fast-scan cyclic voltammetry (FSCV), in combination with carbon fiber microelectrodes, has been used to measure phasic DA release in vivo by adopting a background subtraction procedure to remove background capacitive currents. However, to-date, measuring tonic changes in DA concentrations using conventional FSCV has been difficult because background capacitive currents are inherently unstable over long recording periods...
October 24, 2016: Analytical Chemistry
Petur I Jonsson, Loic Letertre, Sigurdur J Juliusson, Brynja R Gudmundsdottir, Charles W Francis, Pall T Onundarson
BACKGROUND: The prothrombin time (PT) is equally prolonged by reduction in each of vitamin K dependent (VKD) factors (F) II, VII and X. The Fiix-PT is only affected by FII and FX, the main contributors to thrombin generation (TG). OBJECTIVE: To test the hypothesis that warfarin anticoagulation variability is reduced early during monitoring with normalized PT-ratio calculated from Fiix-PT (Fiix-INR) compared to traditional PT-INR monitoring. Also, that due to its insensitivity to FVII, Fiix-PT more accurately reflects TG when Fiix-INR and PT-INR are discrepant...
October 23, 2016: Journal of Thrombosis and Haemostasis: JTH
Lulu Xie, Hongyi Kang, Maiken Nedergaard
BACKGROUND: Stroke is one of the leading causes of death and disability worldwide. As a consequence, several excellent rodent models have been developed to gain insight into the pathophysiology of stroke and testing the efficacy of neuroprotective interventions. However, one potential problem is that albeit roughly 80% of strokes occur in awake patients, all existing murine stroke models employ anesthesia. Moreover, epidemiological studies have shown that stroke injury is more severe in the minority of patients that suffer stroke while asleep...
2016: Journal of Nature and Science
J Maarten de Moor, A Aiuppa, G Avard, H Wehrmann, N Dunbar, C Muller, G Tamburello, G Giudice, M Liuzzo, R Moretti, V Conde, B Galle
Eruptive activity at Turrialba Volcano (Costa Rica) has escalated significantly since 2014, causing airport and school closures in the capital city of San José. Whether or not new magma is involved in the current unrest seems probable but remains a matter of debate as ash deposits are dominated by hydrothermal material. Here we use high-frequency gas monitoring to track the behavior of the volcano between 2014 and 2015 and to decipher magmatic versus hydrothermal contributions to the eruptions. Pulses of deeply derived CO2-rich gas (CO2/Stotal > 4...
August 2016: Journal of Geophysical Research. Solid Earth
Truc T Pham, Shengli Meng, Yan Sun, Wenli Lv, Justin Bahl
A comprehensive monitoring strategy is vital for tracking the spread of mosquito-borne Japanese encephalitis virus (JEV), the leading cause of viral encephalitis in Asia. Virus detection consists of passive surveillance of primarily humans and swine, and/or active surveillance in mosquitoes, which may be a valuable proxy in providing insights into ecological processes underlying the spread and persistence of JEV. However, it has not been well characterized whether passive surveillance alone can capture the circulating genetic diversity to make reasonable inferences...
January 2016: Virus Evolution
Sheila Fleischhacker, Gowri Ramachandran
This article briefly explains the food and nutrition implications of the new standards, tax penalties and reporting requirements for non-profit hospitals and healthcare systems to maintain a tax-exempt or charitable status under section 501(c)(3) of the Federal Internal Revenue Code set forth in The Patient Protection and Affordable Care Act (P.L. 111-148, Sec. 9007). The newly created 501(r) of the Internal Revenue Code requires, beginning with the first tax year on or after March 23, 2012, that such hospitals demonstrate community benefit by conducting a community health needs assessment (CHNA) at least once every three years and annually file information by means of a Schedule H (Form 990) regarding progress towards addressing identified needs...
July 2016: Nutrition Today
Adam C Fisher, Sau L Lee, Daniel P Harris, Lucinda Buhse, Steven Kozlowski, Lawrence Yu, Michael Kopcha, Janet Woodcock
Failures surrounding pharmaceutical quality, particularly with respect to product manufacturing issues and facility remediation, account for the majority of drug shortages and product recalls in the United States. Major scientific advancements pressure established regulatory paradigms, especially in the areas of biosimilars, precision medicine, combination products, emerging manufacturing technologies, and the use of real-world data. Pharmaceutical manufacturing is increasingly globalized, prompting the need for more efficient surveillance systems for monitoring product quality...
October 20, 2016: International Journal of Pharmaceutics
Albina Nowak, Thomas P Mechtler, Robert J Desnick, David C Kasper
BACKGROUND: Fabry disease (FD) is a rare X-linked lysosomal storage disorder due to mutations in the α-galactosidase A gene (GLA) that result in absent or markedly reduce α-galactosidase A (α-GalA) enzymatic activity. As a result, the major glycosphingolipid substrates, globotriaosylceramide (Gb3) and globotriaosylsphingosine (LysoGb3) accumulate in plasma, urine and tissue lysosomes. In females, the diagnosis can be complicated by the fact that 40-50% of GLA-mutation confirmed heterozygotes have normal or only slightly decreased leukocyte α-GalA activities...
October 19, 2016: Molecular Genetics and Metabolism
S Ganesh Babu, P Aparna, G Satishkumar, Muthupandian Ashokkumar, B Neppolian
A recyclable heterogeneous catalyst has been successfully developed for application in a Fenton-type advanced oxidation process without adding external H2O2. LaFeO3 was prepared from Fe(NO3)3·9H2O and La(NO3)·6H2O by a simple sol-gel method and its catalytic efficiency was evaluated for mineralization of 4-chlorophenol using a Fenton-like process. The mineralization process was carried out under ultrasonication in presence of heterogeneous LaFeO3 catalyst with H2O2 that was produced during ultrasonication...
January 2017: Ultrasonics Sonochemistry
Ozkan Acisli, Alireza Khataee, Semra Karaca, Atefeh Karimi, Ercan Dogan
High energy planetary ball milling process was used to prepare magnetite nanostructures from natural magnetite. The natural and ball-milled magnetite samples were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (HR-TEM), energy-dispersive X-ray spectroscopy (EDX), Brunauer-Emmett-Teller (BET) and Fourier transform infrared spectroscopy (FT-IR). The results of EDX indicated the presence of main elements including Fe and O in the structure of both unmodified and milled magnetite samples...
January 2017: Ultrasonics Sonochemistry
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