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https://www.readbyqxmd.com/read/28738310/postural-response-to-predictable-and-nonpredictable-visual-flow-in-children-and-adults
#1
Mark A Schmuckler
Children's (3-5years) and adults' postural reactions to different conditions of visual flow information varying in its frequency content was examined using a moving room apparatus. Both groups experienced four conditions of visual input: low-frequency (0.20Hz) visual oscillations, high-frequency (0.60Hz) oscillations, multifrequency nonpredictable visual input, and no imposed visual information. Analyses of the frequency content of anterior-posterior (AP) sway revealed that postural reactions to the single-frequency conditions replicated previous findings; children were responsive to low- and high-frequency oscillations, whereas adults were responsive to low-frequency information...
July 21, 2017: Journal of Experimental Child Psychology
https://www.readbyqxmd.com/read/28738276/the-impact-of-accelerated-high-frequency-rtms-on-brain-neurochemicals-in-treatment-resistant-depression-insights-from-1-h-mr-spectroscopy
#2
Chris Baeken, Jean-Pascal Lefaucheur, Peter Van Schuerbeek
OBJECTIVE: Although accelerated repetitive transcranial magnetic stimulation (rTMS) designs seem to be able to alleviate mood over a relatively short period of time, no studies yet examined the cellular effects on neurochemicals with regard to working mechanisms, safety and neural integrity. METHODS: Eighteen right-handed antidepressant-free unipolar treatment resistant depressed (TRD) patients participated in this sham-controlled accelerated high frequency (aHF)-rTMS (1)H MR spectroscopy study applied to the left dorsolateral prefrontal cortex (DLPFC)...
July 6, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28737378/quantitative-mid-infrared-cavity-ringdown-detection-of-methyl-iodide-for-monitoring-applications
#3
Ibrahim Sadiek, Qiang Shi, Douglas Wallace, Gernot Friedrichs
Methyl iodide is a toxic halocarbon with diverse industrial and agricultural applications and is an important ocean-derived trace gas that contributes to the iodine burden of the atmosphere. Quantitative analysis of CH3I is mostly based on gas chromatography coupled with mass spectrometry or electron capture detection (GC-MS/ECD) as yet, which often limits the ability to conduct in situ high-frequency monitoring studies. This work presents an alternative detection scheme based on mid-infrared continuous wave cavity ringdown spectroscopy (mid-IR cw-CRDS)...
July 24, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28736668/in-vivo-photoacoustics-and-high-frequency-ultrasound-imaging-of-mechanical-high-intensity-focused-ultrasound-hifu-ablation
#4
Khalid Daoudi, Martijn Hoogenboom, Martijn den Brok, Dylan Eikelenboom, Gosse J Adema, Jürgen J Fütterer, Chris L de Korte
The thermal effect of high intensity focused ultrasound (HIFU) has been clinically exploited over a decade, while the mechanical HIFU is still largely confined to laboratory investigations. This is in part due to the lack of adequate imaging techniques to better understand the in-vivo pathological and immunological effects caused by the mechanical treatment. In this work, we explore the use of high frequency ultrasound (US) and photoacoustics (PA) as a potential tool to evaluate the effect of mechanical ablation in-vivo, e...
April 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28736443/clock-3111t-c-genetic-variant-influences-the-daily-rhythm-of-autonomic-nervous-function-relevance-to-body-weight-control
#5
M-T Lo, C Bandin, H-W Yang, F A J L Scheer, K Hu, M Garaulet
BACKGROUND/OBJECTIVES: Humans carrying the genetic risk variant C at the circadian CLOCK (Circadian Locomotor Output Cycles Kaput) 3111T/C have been shown to have more difficulties to achieve desired weight loss than TT carriers. We tested the hypothesis that the daily rhythm of autonomic nervous function differs in CLOCK 3111C carriers, leading to reduced effectiveness in weight control. SUBJECTS/METHODS: We recruited 40 overweight/obese Caucasian women (BMI>25), 20 carrying CLOCK 3111C (CC and TC) and 20 non-carriers with matched age and BMI who participated in a dietary obesity treatment program of up to 30 weeks...
July 24, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28736151/multi-loop-nonlinear-control-design-for-performance-improvement-of-lti-systems
#6
Raaja Ganapathy Subramanian, Vinodh Kumar Elumalai
This paper puts forward a multi-loop nonlinear control (MLNC) strategy to overcome the limited performance of LTI controllers due to the so-called "waterbed" effect. According to "Bode's sensitivity integral", increasing the bandwidth or additional integral gain of LTI controller to improve the low-frequency disturbance attenuation irrefutably increases the sensitivity to high-frequency disturbances or measurement noise. Hence, it is impossible to attain the best of both worlds in the case of linear controllers...
July 20, 2017: ISA Transactions
https://www.readbyqxmd.com/read/28735602/skill-sharing-and-delegation-practice-in-two-queensland-regional-allied-health-cancer-care-services-a-comparison-of-tasks
#7
Juanine Passfield, Ilsa Nielsen, Neil Brebner, Cara Johnstone
Objective Delegation and skill sharing are emerging service strategies for allied health (AH) professionals working in Queensland regional cancer care services. The aim of the present study was to describe the consistency between two services for the types and frequency of tasks provided and the agreement between teams in the decision to delegate or skill share clinical tasks, thereby determining the potential applicability to other services.Methods Datasets provided by two similar services were collated. Descriptive statistical analyses were used to assess the extent of agreement...
July 24, 2017: Australian Health Review: a Publication of the Australian Hospital Association
https://www.readbyqxmd.com/read/28735534/investigation-and-application-of-a-new-passive-sampling-technique-for-in-situ-monitoring-of-illicit-drugs-in-waste-waters-and-rivers
#8
Changsheng Guo, Tingting Zhang, Song Hou, Jiapei Lv, Yuan Zhang, Fengchang Wu, Zhendong Hua, Wei Meng, Hao Zhang, Jian Xu
Illicit drugs constitute a class of emerging contaminants that has been drawing significant concern due to its potent pharmacological and biological activities. In this study, an in situ passive sampling approach that uses diffusive gradients in thin films (DGT) was successfully tested for measuring ketamine (KET), methamphetamine (METH), and amphetamine (AMP) in water. The diffusion coefficients of KET, METH, and AMP in diffusive gel were (8.13±0.12)×10-6, (8.55±0.14)×10-6, and (7.72±0.18)×10-6 cm2 s-1 at 22 °C, respectively...
July 24, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28735402/determination-of-total-sulfur-sulfate-sulfite-thiosulfate-and-sulfolipids-in-plants
#9
Assylay Kurmanbayeva, Galina Brychkova, Aizat Bekturova, Inna Khozin, Dominic Standing, Dmitry Yarmolinsky, Moshe Sagi
In response to oxidative stress the biosynthesis of the ROS scavenger, glutathione is induced. This requires the induction of the sulfate reduction pathway for an adequate supply of cysteine, the precursor for glutathione. Cysteine also acts as the sulfur donor for the sulfuration of the molybdenum cofactor, crucial for the last step of ABA biosynthesis. Sulfate and sulfite are, respectively, the precursor and intermediate for cysteine biosynthesis and there is evidence for stress-induced sulfate uptake and further downstream, enhanced sulfite generation by 5'-phosphosulfate (APS) reductase (APR, EC 1...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28735090/impacts-of-the-2003-and-2015-summer-heatwaves-on-permafrost-affected-rock-walls-in-the-mont-blanc-massif
#10
L Ravanel, F Magnin, P Deline
Rockfall is one of the main geomorphological processes that affects the evolution and stability of rock-walls. At high elevations, rockfall is largely climate-driven, very probably because of the warming of rock-wall permafrost. So with the ongoing global warming that drives the degradation of permafrost, the related hazards for people and infrastructure could continue to increase. The heatwave of summer 2015, which affected Western Europe from the end of June to August, had a serious impact on the stability of high-altitude rock-walls, including those in the Mont Blanc massif...
July 20, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28735055/molecular-analysis-of-virulence-genes-and-the-accessory-gene-regulator-agr-types-among-methicillin-resistant-staphylococcus-aureus-mrsa-strains
#11
Sara Cheraghi, Leyla Pourgholi, Maryam Shafaati, Shirinsadat Hashemi Fesharaki, Arash Jalali, Rahim Nosrati, MohammadAli Boroumand
OBJECTIVES: Methicillin resistant S. aureus (MRSA) strains are a main cause of hospital-acquired infections and are considered as a serious public-health concern. MRSA isolates have plenty of virulence factors, which are the basis for its pathogenicity. The controlling and coordination of the expression of these genes perform by the accessory gene regulator (agr). The aim of this study was to determine the rate of some virulence genes encoding the enterotoxin, exfoliative toxin genes (eta), the adhesin genes and identification of agr specificity groups in MRSA isolates...
July 19, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28734548/ubiquitin-like-modifications-in-the-dna-damage-response
#12
REVIEW
Zhifeng Wang, Wei-Guo Zhu, Xingzhi Xu
Genomic DNA is damaged at an extremely high frequency by both endogenous and environmental factors. An improper response to DNA damage can lead to genome instability, accelerate the aging process and ultimately cause various human diseases, including cancers and neurodegenerative disorders. The mechanisms that underlie the cellular DNA damage response (DDR) are complex and are regulated at many levels, including at the level of post-translational modification (PTM). Since the discovery of ubiquitin in 1975 and ubiquitylation as a form of PTM in the early 1980s, a number of ubiquitin-like modifiers (UBLs) have been identified, including small ubiquitin-like modifiers (SUMOs), neural precursor cell expressed, developmentally down-regulated 8 (NEDD8), interferon-stimulated gene 15 (ISG15), human leukocyte antigen (HLA)-F adjacent transcript 10 (FAT10), ubiquitin-fold modifier 1 (UFRM1), URM1 ubiquitin-related modifier-1 (URM1), autophagy-related protein 12 (ATG12), autophagy-related protein 8 (ATG8), fan ubiquitin-like protein 1 (FUB1) and histone mono-ubiquitylation 1 (HUB1)...
July 11, 2017: Mutation Research
https://www.readbyqxmd.com/read/28734235/characterization-of-cognitive-performance-and-evaluation-of-quality-of-life-among-patients-with-htlv-1
#13
Liliana Raulino Goncalves, Leopoldo Nelson Fernandes Barbosa, Paula Machado Ribeiro Magalhaes, Pedro Augusto Sampaio Rocha-Filho
OBJECTIVE: To characterize cognitive alterations among patients with HTLV-1, ascertain what is associated with these alterations and evaluate these patients' quality of life. PATIENTS AND METHODS: This was a cross-sectional study. Patients infected by HTLV-1 who were seen at the Oswaldo Cruz University Hospital from March 2014 to June 2015 were included in the study. A semi-structured questionnaire and the Mini-Mental State Examination, Color Trails Test, Wechsler Adult Intelligence Scale (WAIS-III), Hospital Anxiety and Depression Scale and Medical Outcomes Study 36-Item Short-Form Health Survey (SF36) were used...
July 12, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28734175/cd8-t-cell-programming-by-cytomegalovirus-vectors-applications-in-prophylactic-and-therapeutic-vaccination
#14
REVIEW
Klaus Früh, Louis Picker
Vectors based on cytomegalovirus (CMV) represent a novel vaccine platform that maintains high frequencies of non-exhausted effector memory T cells in both CMV sero-positive and sero-negative individuals. In non-human primate models, CMV vectored vaccines provide unprecedented protection against simian immunodeficiency virus (SIV). Moreover, CMV vectors can be genetically altered to program highly diverse CD8+ T cell responses that differ in their epitope targeting including conventional, MHC-I restricted CD8+ T cells as well as unconventional CD8+ T cells restricted by MHC class II or non-polymorphic MHC-E...
July 19, 2017: Current Opinion in Immunology
https://www.readbyqxmd.com/read/28734106/insecticide-resistance-in-trialeurodes-vaporariorum-populations-and-novel-diagnostics-for-kdr-mutations
#15
Despoina Evr Kapantaidaki, Eldem Sadikoglou, Dimitra Tsakireli, Vasileios Kampanis, Marianna Stavrakaki, Corinna Schorn, Aris Ilias, Maria Riga, George Tsiamis, Ralf Nauen, George Skavdis, John Vontas, Anastasia Tsagkarakou
BACKGROUND: Neonicotinoids, pyrethroids and ketoenols, are currently used for the control of Trialeurodes vaporariorum (Hemiptera: Aleyrodidae). In this study, insecticide resistance status and mechanisms were investigated by classical bioassays and molecular techniques. RESULTS: Dose response bioassays were performed on 19 Greek populations, among the 35 different whitefly populations used for the whole analysis. Resistance factors scaled up to 207-, 4657- and 59- fold, for imidacloprid, bifenthrin and spiromesifen, respectively...
July 22, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28734060/effects-of-eddy-currents-on-selective-spectral-editing-experiments-at-3t
#16
Georg Oeltzschner, Karim Snoussi, Nicolaas A Puts, Mark Mikkelsen, Ashley D Harris, Subechhya Pradhan, Kyrana Tsapkini, Michael Schär, Peter B Barker, Richard A E Edden
PURPOSE: To investigate frequency-offset effects in edited magnetic resonance spectroscopy (MRS) experiments arising from B0 eddy currents. MATERIALS AND METHODS: Macromolecule-suppressed (MM-suppressed) γ-aminobutyric acid (GABA)-edited experiments were performed at 3T. Saturation-offset series of MEGA-PRESS experiments were performed in phantoms, in order to investigate different aspects of the relationship between the effective editing frequencies and eddy currents associated with gradient pulses in the sequence...
July 22, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28734020/molecular-analysis-of-brazilian-patients-with-combined-pituitary-hormone-deficiency-and-orthotopic-posterior-pituitary-lobe-reveals-eight-different-prop1-alterations-with-three-novel-mutations
#17
Joao L O Madeira, Mirian Y Nishi, Marilena Nakaguma, Anna F Benedetti, Isabela Peixoto Biscotto, Thamiris Fernandes, Thiago Pequeno, Thalita Figueiredo, Marcela M Franca, Fernanda A Correa, Aline P Otto, Milena Abrão, Mirta B Miras, Silvana Santos, Alexander A L Jorge, Everlayny F Costalonga, Berenice B Mendonca, Ivo J P Arnhold, Luciani R Carvalho
BACKGROUND: Mutations in PROP1, HESX1, and LHX3 are associated with combined pituitary hormone deficiency (CPHD) and orthotopic posterior pituitary lobe (OPP). OBJECTIVE: To identify mutations in PROP1, HESX1, and LHX3 in a large cohort of patients with CPHD and OPP (35 Brazilian, 2 Argentinian). DESIGN AND METHODS: We studied 23 index patients with CPHD and OPP (6 familial and 17 sporadic) as well as 14 relatives. PROP1 was sequenced by the Sanger method in all except one sporadic case studied using a candidate gene panel...
July 22, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28733683/radiation-loss-of-planar-surface-plasmon-polaritons-transmission-lines-at-microwave-frequencies
#18
Zhixia Xu, Shunli Li, Xiaoxing Yin, Hongxin Zhao, Leilei Liu
Radiation loss of a typical spoof surface plasmon polaritons (SSPPs) transmission line (TL) is investigated in this paper. A 325 mm-long SSPPs TL is designed and fabricated. Simulated results show that radiation loss contributes more to transmission loss than dielectric loss and conductor loss from 2 GHz to 10 GHz. Radiation loss of the SSPPs TL could be divided into two parts, one is caused by the input mode converter, and the other is caused by the corrugated metallic strip. This paper explains mechanisms of radiation loss from different parts, designs a loaded SSPPs TL with a series of resistors to absorb electromagnetic energy on corrugated metallic strip, and then discriminates radiation loss from the input mode converter, proposes the concept of average radiation length (ARL) to evaluate radiation loss from SSPPs of finite length, and concludes that radiation loss is mainly caused by corrugated structure of finite length at low frequency band and by the input mode converter at high frequency band...
July 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28733433/intensive-exercise-training-improves-cardiac-electrical-stability-in-myocardial-infarcted-rats
#19
Horesh Dor-Haim, Chaim Lotan, Michal Horowitz, Moshe Swissa
BACKGROUND: Moderate exercise training has been shown to decrease sudden cardiac death post myocardial infarction. However, the effects of intensive exercise are still controversial. METHODS AND RESULTS: Fourteen myocardial-infarcted rats were divided into sedentary (n=8) and intensive training groups (n=6) and 18 sham control rats to sedentary (n=10) and intensive training groups (n=8). Heart rate variability was obtained at weeks 1 and 8. The inducibility of ventricular tachycardia/fibrillation was assessed in a Langendorff system...
July 21, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28733314/effects-of-an-airway-clearance-device-on-inflammation-bacteriology-and-mucus-transport-in-bronchiectasis
#20
Joana Tambascio, Hugo Celso Dutra de Souza, Roberto Martinez, José Antônio Baddini-Martinez, Peter John Barnes, Ada Clarice Gastaldi
BACKGROUND: Bronchiectasis is characterized by abnormal and permanent dilation of the bronchi, caused by the perpetuation of inflammation and impairment of mucociliary clearance. Physiotherapy techniques can help to decrease the retention of respiratory secretions. The flutter valve combines high-frequency oscillation and positive expiratory pressure to facilitate the removal of secretions. We evaluated the effects of the flutter valve on sputum inflammation, microbiology, and transport of respiratory secretions in patients with bronchiectasis...
August 2017: Respiratory Care
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