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https://www.readbyqxmd.com/read/29341601/determining-double-bond-position-in-lipids-using-online-ozonolysis-coupled-to-liquid-chromatography-and-ion-mobility-mass-spectrometry
#1
Rachel A Harris, Jody C May, Craig A Stinson, Yu Xia, John A McLean
The increasing focus on lipid metabolism has revealed a need for analytical techniques capable of structurally characterizing lipids with a high degree of specificity. Lipids can exist as any one of a large number of double bond positional isomers, which are indistinguishable by single-stage mass spectrometry alone. Ozonolysis reactions coupled to mass spectrometry have previously been demonstrated as a means for localizing double bonds in unsaturated lipids. Here we describe an online, solution-phase reactor using ozone produced via a low-pressure mercury lamp, which generates aldehyde products diagnostic of cleavage at a particular double bond position...
January 17, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29339773/postural-adaptations-to-unilateral-knee-joint-hypomobility-induced-by-orthosis-wear-during-gait-initiation
#2
A Delafontaine, P Fourcade, J L Honeine, S Ditcharles, E Yiou
Balance control and whole-body progression during gait initiation (GI) involve knee-joint mobility. Single knee-joint hypomobility often occurs with aging, orthopedics or neurological conditions. The goal of the present study was to investigate the capacity of the CNS to adapt GI organization to single knee-joint hypomobility induced by the wear of an orthosis. Twenty-seven healthy adults performed a GI series on a force-plate in the following conditions: without orthosis ("control"), with knee orthosis over the swing leg ("orth-swing") and with the orthosis over the contralateral stance leg ("orth-stance")...
January 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29339341/health-status-alterations-in-ruditapes-philippinarum-after-continuous-secondary-effluent-exposure-before-and-after-additional-tertiary-treatment-application
#3
B Díaz-Garduño, J A Perales, C Garrido-Pérez, M L Martín-Díaz
A mobile pilot plant was set up in a wastewater treatment plant (WWTP) in southwest Spain to address potential adverse effects of effluents as a whole contaminant, which are discharging into marine environments. Ruditapes philippinarum specimens were exposed to different effluent concentrations (50%, 25%, 12.5%, 6.25%, and 3.15%) during seven days. After effluent exposure, lysosomal membrane stability alterations (LMS), changes in the energy status storage (total lipids content (TLP) and in the mitochondrial electron transport (MET), inhibition of inflammatory mechanisms (cyclooxygenase activity (COX)), and neurotoxic effects (acetylcholinesterase (AChE) were determined in exposed organisms...
January 12, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29339205/agreement-of-musculoskeletal-ultrasound-and-clinical-assessment-of-shoulder-impairment-in-manual-wheelchair-users-with-various-duration-of-spinal-cord-injury
#4
Margaret Finley, David Ebaugh, Thomas Trojian
OBJECTIVE: To determine agreement of musculoskeletal ultrasound (MSK-US) findings of shoulder pathology and related shoulder special test results in individuals with varied duration of manual wheelchair (MWC) use following spinal cord injury (SCI) and determine if shoulder musculoskeletal impairments, per MSK-US and clinical examination, differed in individuals with SCI and varying duration of MWC use. DESIGN: Cross-sectional cohort study SETTING: Laboratory setting PARTICIPANTS: Twenty-three adult volunteers with SCI who used a MWC for community mobility...
January 12, 2018: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/29338722/development-and-pilot-evaluation-of-a-clinic-based-mhealth-app-referral-service-to-support-adult-cancer-survivors-increase-their-participation-in-physical-activity-using-publicly-available-mobile-apps
#5
Camille E Short, Amy Finlay, Ilea Sanders, Carol Maher
BACKGROUND: Participation in regular physical activity holds key benefits for cancer survivors, yet few cancer survivors meet physical activity recommendations. This study aimed to develop and pilot test a mHealth app referral service aimed at assisting cancer survivors to increase their physical activity. In particular, the study sought to examine feasibility and acceptability of the service and determine preliminary efficacy for physical activity behaviour change. METHODS: A systematic search identified potentially appropriate Apple (iOS) and Android mHealth apps...
January 16, 2018: BMC Health Services Research
https://www.readbyqxmd.com/read/29338691/morca-ubiquitous-access-to-life-science-web-services
#6
Sergio Diaz-Del-Pino, Oswaldo Trelles, Juan Falgueras
BACKGROUND: Technical advances in mobile devices such as smartphones and tablets have produced an extraordinary increase in their use around the world and have become part of our daily lives. The possibility of carrying these devices in a pocket, particularly mobile phones, has enabled ubiquitous access to Internet resources. Furthermore, in the life sciences world there has been a vast proliferation of data types and services that finish as Web Services. This suggests the need for research into mobile clients to deal with life sciences applications for effective usage and exploitation...
January 16, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29337917/the-hydrocolor-app-above-water-measurements-of-remote-sensing-reflectance-and-turbidity-using-a-smartphone-camera
#7
Thomas Leeuw, Emmanuel Boss
HydroColor is a mobile application that utilizes a smartphone's camera and auxiliary sensors to measure the remote sensing reflectance of natural water bodies. HydroColor uses the smartphone's digital camera as a three-band radiometer. Users are directed by the application to collect a series of three images. These images are used to calculate the remote sensing reflectance in the red, green, and blue broad wavelength bands. As with satellite measurements, the reflectance can be inverted to estimate the concentration of absorbing and scattering substances in the water, which are predominately composed of suspended sediment, chlorophyll, and dissolved organic matter...
January 16, 2018: Sensors
https://www.readbyqxmd.com/read/29337367/correlation-of-simulation-finite-element-analysis-to-the-separation-of-intrinsically-magnetic-spores-and-red-blood-cells-using-a-microfluidic-magnetic-deposition-system
#8
Jianxin Sun, L Moore, Wei Xue, James Kim, Maciej Zborowski, Jeffrey J Chalmers
Magnetic separation of cells has been, and continues to be, widely used in a variety of applications, ranging from healthcare diagnostics to detection of food contamination. Typical, these technologies require cells labeled with antibody magnetic particle conjugate and a high magnetic energy gradient created in the flow containing the labeled cells (i.e. a column packed with magnetically inducible material), or dense packing of magnetic particles next to the flow cell. Such designs while creating high magnetic energy gradients, are not amenable to easy, highly detailed, mathematic characterization...
January 16, 2018: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/29336905/getting-a-good-night-sleep-the-importance-of-recognizing-and-treating-nocturnal-hypokinesia-in-parkinson-s-disease
#9
REVIEW
Roongroj Bhidayasiri, Claudia Trenkwalder
When Parkinson's disease (PD) patients are asked about the quality of their sleep, their answers are dominated by difficulties associated with impaired mobility in bed, medically referred to as nocturnal hypokinesia. Nocturnal hypokinesia is symptomatic from the mid-stage of the disease, affecting up to 70% of PD patients, and contributes to poor sleep quality, and increased carer burden. Here we explore four areas of nocturnal hypokinesia that are relevant to clinical practice, namely: manifestations and definition; clinical assessment and objective monitoring; etiologies and contributing factors; and evidence-based therapeutic approaches...
January 5, 2018: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/29336354/an-analytical-poroelastic-model-for-ultrasound-elastography-imaging-of-tumors
#10
Md Tauhidul Islam, Anuj Chaudhry, Ginu Unnikrishnan, J N Reddy, Raffaella Righetti
The mechanical behavior of biological tissues has been studied using a number of mechanical models. Due to the relatively high fluid content and mobility, many biological tissues have been modeled as poroelastic materials. Diseases such as cancers are known to alter the poroelastic response of a tissue. Tissue poroelastic properties such as compressibility, interstitial permeability and fluid pressure also play a key role for the assessment of cancer treatments and for improved therapies. At the present time, however, a limited number of poroelastic models for soft tissues are retrievable in the literature, and the ones available are not directly applicable to tumors as they typically refer to uniform tissues...
January 16, 2018: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29335669/portable-faims-applications-and-future-perspectives
#11
Michael T Costanzo, Jared J Boock, Robin H J Kemperman, Michael S Wei, Christopher R Beekman, Richard A Yost
Miniaturized mass spectrometry (MMS) is optimal for a wide variety of applications that benefit from field-portable instrumentation. Like MMS, field asymmetric ion mobility spectrometry (FAIMS) has proven capable of providing in situ analysis, allowing researchers to bring the lab to the sample. FAIMS compliments MMS very well, but has the added benefit of operating at atmospheric pressure, unlike MS. This distinct advantage makes FAIMS uniquely suited for portability. Since its inception, FAIMS has been envisioned as a field-portable device, as it affords less expense and greater simplicity than many similar methods...
November 2017: International Journal of Mass Spectrometry
https://www.readbyqxmd.com/read/29333801/efficacy-of-the-regent-suit-based-rehabilitation-on-gait-emg-patterns-in-hemiparetic-subjects-a-pilot-study
#12
Luigi Iuppariello, Giovanni D'Addio, Maria Romano, Paolo Bifulco, Nicola Pappone, Bernardo Lanzillo, Mario Cesarelli
BACKGROUND: The recovery of the functional limb mobility of patients with cerebral damages can take great benefit of the role offered by proprioceptive rehabilitation. Recently have been developed a special Regent Suit (RS) for rehabilitative applications. Actually, there are preliminary studies which describes the effects of RS on gait recovery of stroke patients in acute stage, but none in chronic stage. Moreover, it is known that motor recovery does not always reflect improvements of the muscle activity and coactivity...
January 11, 2018: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/29333683/mobility-engineering-in-vertical-field-effect-transistors-based-on-van-der-waals-heterostructures
#13
Yong Seon Shin, Kiyoung Lee, Young Rae Kim, Hyangsook Lee, I Min Lee, Won Tae Kang, Boo Heung Lee, Kunnyun Kim, Jinseong Heo, Seongjun Park, Young Hee Lee, Woo Jong Yu
Vertical integration of 2D layered materials to form van der Waals heterostructures (vdWHs) offers new functional electronic and optoelectronic devices. However, the mobility in vertical carrier transport in vdWHs of vertical field-effect transistor (VFET) is not yet investigated in spite of the importance of mobility for the successful application of VFETs in integrated circuits. Here, the mobility in VFET of vdWHs under different drain biases, gate biases, and metal work functions is first investigated and engineered...
January 15, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29331913/speciation-evolution-of-zinc-and-copper-during-pyrolysis-and-hydrothermal-carbonization-treatments-of-sewage-sludges
#14
Rixiang Huang, Bei Zhang, Emily M Saad, Ellery D Ingall, Yuanzhi Tang
Thermal and hydrothermal treatments are promising techniques for sewage sludge management that can potentially facilitate safe waste disposal, energy recovery, and nutrient recovery/recycling. Content and speciation of heavy metals in the treatment products affect the potential environmental risks upon sludge disposal and/or application of the treatment products. Therefore, it is important to study the speciation transformation of heavy metals and the effects of treatment conditions. By combining synchrotron X-ray spectroscopy/microscopy analysis and sequential chemical extraction, this study systematically characterized the speciation of Zn and Cu in municipal sewage sludges and their chars derived from pyrolysis (a representative thermal treatment technique) and hydrothermal carbonization (HTC; a representative hydrothermal treatment technique)...
January 4, 2018: Water Research
https://www.readbyqxmd.com/read/29331901/an-ultrasensitive-detection-of-mirna-155-in-breast-cancer-via-direct-hybridization-assay-using-two-dimensional-molybdenum-disulfide-field-effect-transistor-biosensor
#15
Samira Mansouri Majd, Abdollah Salimi, Foad Ghasemi
MicroRNAs (miRNAs), critical biomarkers of acute and chronic diseases, play key regulatory roles in many biological processes. As a result, robust assay platforms to enable an accurate and efficient detection of low-level miRNAs in complex biological samples are of great significance. In this work, a label-free and direct hybridization assay using molybdenum disulfide (MoS2) field-effect transistor (FET) biosensor has been developed for ultrasensitive detection of miRNA-155 as a breast cancer biomarker in human serum and cell-line samples...
January 6, 2018: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29331853/mobility-of-heavy-metals-in-sandy-soil-after-application-of-composts-produced-from-maize-straw-sewage-sludge-and-biochar
#16
K Gondek, M Mierzwa-Hersztek, M Kopeć
Studies on the availability of heavy metals in composted organic materials and in soil amended with these materials are of practical significance. They are used in the assessment of the purity of the soil environment and of the biological value of plants intended for human and animal consumption. Composting of organic materials has a significant effect on changes in mobile forms of heavy metals. Therefore, the aim of this study was to determine the effect of the addition of biochar and sewage sludge on (i) the contents of water soluble forms of Cu, Cd, Pb, and Zn in composts; and (ii) the contents of mobile forms of these elements in sandy soil after the addition of composts...
January 11, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29331795/development-and-validation-of-an-uhplc-ms-ms-approach-for-simultaneous-quantification-of-five-bioactive-saponins-in-rat-plasma-application-to-a-comparative-pharmacokinetic-study-of-aqueous-extracts-of-raw-and-salt-processed-achyranthes-bidentata
#17
Yi Tao, Yingshan Du, Weidong Li, Baochang Cai
A simple, accurate and sensitive ultra high-performance liquid chromatography-tandem mass spectrometry approach was established for the simultaneous determination of β-ecdysterone, 25S-inokosterone, ginsenoside Ro, chikusetsusaponin IV and chikusetsusaponin IVa in rat plasma after oral administration of raw and salt-processed Achyranthes bidentata extract. The saponins were completely separated on a Waters BEH C18 UHPLC column by using acetonitrile/0.1% formic acid-water as mobile phases. The mass analysis was performed in a triple quadrupole mass spectrometer using multiple reaction monitoring (MRM) with negative scan mode...
January 9, 2018: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29331494/a-novel-difficult-airway-prediction-tool-for-emergency-airway-management-validation-of-the-heaven-criteria-in-a-large-air-medical-cohort
#18
Edward Kuzmack, Travis Inglis, David Olvera, Allen Wolfe, Kona Seng, Daniel Davis
BACKGROUND: Difficult-airway prediction tools help identify optimal airway techniques, but were derived in elective surgery patients and may not be applicable to emergency rapid sequence intubation (RSI). The HEAVEN criteria (Hypoxemia, Extremes of size, Anatomic abnormalities, Vomit/blood/fluid, Exsanguination, Neck mobility issues) may be more relevant to emergency RSI patients. OBJECTIVE: To validate the HEAVEN criteria for difficult-airway prediction in emergency RSI using a large air medical cohort...
January 10, 2018: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29331247/a-biopsy-of-breast-cancer-mobile-applications-state-of-the-practice-review
#19
G Giunti, D H Giunta, E Guisado-Fernandez, J L Bender, L Fernandez-Luque
BACKGROUND: Breast cancer is the most common cancer in women. The use of mobile software applications for health and wellbeing promotion has grown exponentially in recent years. We systematically reviewed the breast cancer apps available in today's leading smartphone application stores and characterized them based on their features, evidence base and target audiences. METHODS: A cross-sectional study was performed to characterize breast cancer apps from the two major smartphone app stores (iOS and Android)...
February 2018: International Journal of Medical Informatics
https://www.readbyqxmd.com/read/29330841/delayed-replantation-of-an-avulsed-immature-permanent-incisor-and-apexification-using-a-novel-fast-setting-calcium-silicate-cement-containing-fluoride-a-3-year-follow-up-case-report
#20
A Vafaei, B Ranjkesh, L Erfanparast, H Løvschall
BACKGROUND: Traumatic tooth avulsion requires an urgent intervention to replant the tooth. Prolonged post-injury dry extra-oral conditions worsen the prognosis and increase the risk of root resorption. Fluoride has the potential to delay replacement resorption. Calcium silicate cements (CSC) are used to seal the root canal system and to stimulate periapical regeneration in immature open apex teeth (apexification). This report suggests the application of a novel fast-setting CSC with fluoride for apexification in an attempt to hinder root resorption...
January 12, 2018: European Archives of Paediatric Dentistry: Official Journal of the European Academy of Paediatric Dentistry
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