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https://www.readbyqxmd.com/read/29793146/development-of-a-novel-tridentate-ligand-for-colorimetric-detection-of-mn-2-based-on-agnps
#1
Jianyu Wei, Jinfan Chen, Guozong Yue, Liangsheng Hu, Danqing Zhao, Jing Zhu, Luming Yang, Deshun Huang, Pengxiang Zhao
A novel tridentate ligand nitrilotris(methylene)tris(1,2,3-triazole)triacetate (NTTTA) has been synthesized by click reaction and followed with ester hydrolysis reaction. The silver nanoparticles (AgNPs) were then modified and stabilized by this ligand, and subsequently been employed for the highly selective and sensitive colorimetric detection of Mn2+ in aqueous solution. The presence of Mn2+ can cause the aggregation of AgNPs, which leads to the color change of the dispersion from yellow to brown, as well as the decrease and red-shift of the surface plasmon resonance absorption...
May 9, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29792887/auditory-priming-improves-neural-synchronization-in-auditory-motor-entrainment
#2
Jewel E Crasta, Michael H Thaut, Charles W Anderson, Patricia L Davies, William J Gavin
Neurophysiological research has shown that auditory and motor systems interact during movement to rhythmic auditory stimuli through a process called entrainment. This study explores the neural oscillations underlying auditory-motor entrainment using electroencephalography. Forty young adults were randomly assigned to one of two control conditions, an auditory-only condition or a motor-only condition, prior to a rhythmic auditory-motor synchronization condition (referred to as combined condition). Participants assigned to the auditory-only condition (auditory-first group) listened to 400 trials of auditory stimuli presented every 800ms, while those in the motor-only condition (motor-first group) were asked to tap rhythmically every 800ms without any external stimuli...
May 21, 2018: Neuropsychologia
https://www.readbyqxmd.com/read/29792720/-experimental-processing-of-corrosion-casts-of-large-animal-organs
#3
R Pálek, V Liška, L Eberlová, H Mírka, M Svoboda, S Haviar, M Emingr, O Brzoň, P Mik, V Třeška
INTRODUCTION: Corrosion casts (CCs) are used for the visualization and assessment of hollow structures. CCs with filled capillaries enable (with the help of imaging methods) to obtain data for mathematical organ perfusion modelling. As the processing is more difficult in case of organs with greater volume of the vasculature, mainly organs from small animals have been cast up to now. The aim of this study was to optimize the protocol of corrosion casting of different organs of pig. Porcine organs are relatively easily accessible and frequently used in experimental medicine...
2018: Rozhledy V Chirurgii: Měsíčník Československé Chirurgické Společnosti
https://www.readbyqxmd.com/read/29789718/pdlim7-and-cdh18-regulate-the-turnover-of-mdm2-during-cdk4-6-inhibitor-therapy-induced-senescence
#4
Mary E Klein, Mark A Dickson, Cristina Antonescu, Li-Xuan Qin, Scott J Dooley, Afsar Barlas, Katia Manova, Gary K Schwartz, Aimee M Crago, Samuel Singer, Andrew Koff, William D Tap
CDK4/6 inhibitors are being used to treat a variety of human malignancies. In well-differentiated and dedifferentiated liposarcoma their clinical promise is associated with their ability to downregulate the MDM2 protein. The downregulation of MDM2 following treatment with CDK4/6 inhibitors also induces many cultured tumor cell lines derived from different types of malignancies to progress from quiescence into senescence. Here we used cultured human cell lines and defined a role for PDLIM7 and CDH18, regulating MDM2 protein in CDK4/6 inhibitor-treated cells...
May 23, 2018: Oncogene
https://www.readbyqxmd.com/read/29788688/effectiveness-of-double-tie-over-dressing-compared-with-bolster-dressing
#5
Seo Hyung Lee, Yu Jin Kim
BACKGROUND: Skin grafting is a commonly performed operation in plastic and reconstructive surgery. The tie-over dressing is an effective technique to secure the grafted skin by delivering persistent downward pressure. However, if an additional dressing is required due to incomplete graft healing, the process of re-implementing the tie-over dressing may be frustrating for both patients and surgeons. Therefore, we introduce the double tie-over dressing, which readily allows for an additional tie-over dressing after the first dressing, and we present a comparison of its effectiveness with that of the simpler bolster dressing...
May 2018: Archives of Plastic Surgery
https://www.readbyqxmd.com/read/29787806/factors-associated-with-post-election-psychological-distress-the-case-of-the-2016-u-s-presidential-election
#6
Shani Pitcho-Prelorentzos, Krzysztof Kaniasty, Yaira Hamama-Raz, Robin Goodwin, Lia Ring, Menachem Ben-Ezra, Michal Mahat-Shamir
This study, through the lens of Social Cognitive Theory, examined potential risk factors that may intensify election-related psychological distress. Six weeks after the 2016 U.S. election, 772 U.S. adult citizens filled out an online survey that assessed psychological distress along with sociodemographic characteristics, and a set of variables tapping various dimensions of political self-efficacy (i.e., importance of politics in one's life, preferences for different media outlets, political directness, and voting choices)...
May 12, 2018: Psychiatry Research
https://www.readbyqxmd.com/read/29786416/zinc-oxide-enhanced-piezoelectret-polypropylene-microfiber-for-mechanical-energy-harvesting
#7
Jianxiong Zhu, Yali Zhu, Weixing Song, Hui Wang, Min Gao, Minkyu Cho, Inkyu Park
This paper reports zinc oxide (ZnO) coated piezoelectret polypropylene (PP) microfibers with a structure of two opposite arc-shaped braces for enhanced mechanical energy harvesting. The ZnO film was coated onto PP microfibers via magnetron sputtering to form a ZnO/PP compound structure. Triboelectric Nanogenerator (TENG) based on ZnO/PP microfiber compound film was carefully designed with two opposite arc-shaped braces. The results of this study demonstrated that the mechanical energy collection efficiency of TENG based on piezoelectret PP microfiber was greatly enhanced by the coated ZnO and high voltage corona charging method...
May 22, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29786160/aberrant-learning-in-parkinson-s-disease-a-neurocomputational-study-on-bradykinesia
#8
Mauro Ursino, Chiara Baston
Parkinson's disease (PD) is a neurodegenerative disorder characterized by a progressive decline in motor functions, such as bradykinesia, caused by the pathological denervation of nigrostriatal dopaminergic neurons within the basal ganglia (BG). It is acknowledged that dopamine (DA) directly affects the modulatory role of BG towards the cortex. However, a growing body of literature is suggesting that DA induced aberrant synaptic plasticity could play a role in the core symptoms of PD, thus recalling for a "reconceptualization" of the pathophysiology...
May 22, 2018: European Journal of Neuroscience
https://www.readbyqxmd.com/read/29785911/characterisation-of-mango-flavoured-curd-powder-developed-using-spray-drying-technique
#9
Akash Basu, Kathirvelpillai A Athmaselvi
This research communication describes the production of flavoured (Mango) curd powder. The mango flavoured curd powder was developed in two different temperatures (150 °C and 170 °C) in various ratios with one control curd sample. The final powder was obtained in high quality which can be used directly or as an ingredient. The percentage of lactic acid in the developed powder showed the healthy amount of probiotic present in it. The physical properties and probiotic growth of the mango flavoured curd powder, developed by spray drying technique, have been evaluated in this article...
May 2018: Journal of Dairy Research
https://www.readbyqxmd.com/read/29784964/high-speed-photothermal-off-resonance-atomic-force-microscopy-reveals-assembly-routes-of-centriolar-scaffold-protein-sas-6
#10
Adrian P Nievergelt, Niccolò Banterle, Santiago H Andany, Pierre Gönczy, Georg E Fantner
The self-assembly of protein complexes is at the core of many fundamental biological processes 1 , ranging from the polymerization of cytoskeletal elements, such as microtubules 2 , to viral capsid formation and organelle assembly 3 . To reach a comprehensive understanding of the underlying mechanisms of self-assembly, high spatial and temporal resolutions must be attained. This is complicated by the need to not interfere with the reaction during the measurement. As self-assemblies are often governed by weak interactions, they are especially difficult to monitor with high-speed atomic force microscopy (HS-AFM) due to the non-negligible tip-sample interaction forces involved in current methods...
May 21, 2018: Nature Nanotechnology
https://www.readbyqxmd.com/read/29784951/tomographic-and-multimodal-scattering-type-scanning-near-field-optical-microscopy-with-peak-force-tapping-mode
#11
Haomin Wang, Le Wang, Devon S Jakob, Xiaoji G Xu
Scattering-type scanning near-field optical microscopy (s-SNOM) enables nanoscale spectroscopic imaging and has been instrumental for many nano-photonic discoveries and in situ studies. However, conventional s-SNOM techniques with atomic force microscopy tapping mode operation and lock-in detections do not provide direct tomographic information with explicit tip-sample distance. Here, we present a non-traditional s-SNOM technique, named peak force scattering-type scanning near-field optical microscopy (PF-SNOM), by combination of peak force tapping mode and time-gated light detection...
May 21, 2018: Nature Communications
https://www.readbyqxmd.com/read/29784429/in-absence-of-an-explicit-judgment-action-specific-effects-still-influence-an-action-measure-of-perceived-speed
#12
Jessica K Witt
Action-specific effects, such as a fish appearing faster when it is harder to catch, have been primarily demonstrated using explicit perceptual judgments. These sorts of judgments rely on the cognitive or "what" visual pathway. An open question is whether action-specific effects also influence the action pathway. If fish look faster when the net is small, the net should be released earlier than when the net is big. Previously, this action measure was always paired with an explicit measure of fish speed, which is known to evoke the cognitive visual pathway...
May 18, 2018: Consciousness and Cognition
https://www.readbyqxmd.com/read/29784342/rapid-and-sensitive-detection-of-staphylococcus-aureus-assisted-by-polydopamine-modified-magnetic-nanoparticles
#13
Xiaomei Gao, Xin Yao, Zitao Zhong, Li Jia
Pathogens cause significant morbidity and mortality to humans. Thus, development of fast and reliable methods for detection and identification of pathogens is urgently needed to increase protection level of public health and ensure the safety of consumers. Herein, a rapid and sensitive method has been developed for Staphylococcus aureus (S. aureus) detection based on the dual role of polydopamine modified magnetic nanoparticles (PDA@Fe3 O4 NPs) combined with polymerase chain reaction (PCR) and capillary electrophoresis (CE)...
August 15, 2018: Talanta
https://www.readbyqxmd.com/read/29783043/developmental-changes-in-the-perception-of-visuotactile-simultaneity
#14
Yi-Chuan Chen, Terri L Lewis, David I Shore, Charles Spence, Daphne Maurer
A simultaneity judgment (SJ) task was used to measure the developmental trajectory of visuotactile simultaneity perception in children (aged 7, 9, 11, and 13 years) and adults. Participants were presented with a visual flash in the center of a computer monitor and a tap on their right index finger (located 20° below the flash) with 13 possible stimulus onset asynchronies (SOAs). Participants reported whether the flash and tap were presented at the same time. Compared with the adult group, children aged 7 and 9 years made more simultaneous responses when the tap led by more than 300 ms and when the flash led by more than 200 ms, whereas they made fewer simultaneous responses at the 0 ms SOA...
May 18, 2018: Journal of Experimental Child Psychology
https://www.readbyqxmd.com/read/29782515/simulation-of-dyslexia-how-literacy-and-cognitive-skills-can-help-distinguish-college-students-with-dyslexia-from-malingerers
#15
Madelon van den Boer, Elise H de Bree, Peter F de Jong
Academic accommodations associated with a diagnosis of dyslexia might be incentives for college students without reading or spelling difficulties to feign dyslexia and obtain the diagnosis unfairly. In the current study we examined malingering practices by comparing the performance of college students instructed to malinger dyslexia (n = 28) to that of students actually diagnosed with dyslexia (n = 16). We also included a control group of students without reading and spelling difficulties (n = 28). The test battery included tasks tapping literacy skills as well as underlying cognitive skills associated with literacy outcomes...
2018: PloS One
https://www.readbyqxmd.com/read/29782328/post-stroke-visual-neglect-affects-goal-directed-locomotion-in-different-perceptuo-cognitive-conditions-and-on-a-wide-visual-spectrum
#16
Tatiana Ogourtsova, Philippe S Archambault, Anouk Lamontagne
BACKGROUND: Unilateral spatial neglect (USN), a highly prevalent and disabling post-stroke deficit, has been shown to affect the recovery of locomotion. However, our current understanding of USN role in goal-directed locomotion control, and this, in different cognitive/perceptual conditions tapping into daily life demands, is limited. OBJECTIVES: To examine goal-directed locomotion abilities in individuals with and without post-stroke USN vs. healthy controls. METHODS: Participants (n = 45, n = 15 per group) performed goal-directed locomotion trials to actual, remembered and shifting targets located 7 m away at 0° and 15° right/left while immersed in a 3-D virtual environment...
2018: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/29781084/musical-rhythm-and-reading-development-does-beat-processing-matter
#17
REVIEW
Ola Ozernov-Palchik, Aniruddh D Patel
There is mounting evidence for links between musical rhythm processing and reading-related cognitive skills, such as phonological awareness. This may be because music and speech are rhythmic: both involve processing complex sound sequences with systematic patterns of timing, accent, and grouping. Yet, there is a salient difference between musical and speech rhythm: musical rhythm is often beat-based (based on an underlying grid of equal time intervals), while speech rhythm is not. Thus, the role of beat-based processing in the reading-rhythm relationship is not clear...
May 20, 2018: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/29780346/response-inhibition-and-interference-suppression-in-individuals-with-down-syndrome-compared-to-typically-developing-children
#18
Laura Traverso, Martina Fontana, Maria Carmen Usai, Maria C Passolunghi
The present study aims to investigate inhibition in individuals with Down Syndrome compared to typically developing children with different inhibitory tasks tapping response inhibition and interference suppression. Previous studies that aimed to investigate inhibition in individuals with Down Syndrome reported contradictory results that are difficult to compare given the different types of inhibitory tasks used and the lack of reference to a theoretical model of inhibition that was tested in children (see Bunge et al...
2018: Frontiers in Psychology
https://www.readbyqxmd.com/read/29777948/escherichia-coli-hyperepidemic-clone-st410-a-harboring-bla-ctx-m-15-isolated-from-fresh-vegetables-in-a-municipal-market-in-quito-ecuador
#19
David Ortega-Paredes, Pedro Barba, Santiago Mena-López, Nathaly Espinel, Jeannete Zurita
Dissemination of Extended spectrum β-lactamases (ESBL) Enterobacteriaceae is a major medical threat. Vegetables and fruits, which are usually consumed raw, are a very suitable pathway for the spread of these bacteria from farm-to-fork. However, limited information exists regarding resistant bacteria and epidemic clones that are disseminated in vegetables and tap water in South America. We processed a total of 90 samples in triplicate of nine typically consumed raw vegetables from a central municipal market, and tap water samples were processed from twenty-one locations in Quito, Ecuador...
April 30, 2018: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/29776937/pelvic-epidermoid-cyst-a-rare-cause-of-lower-urinary-tract-symptoms
#20
Pritesh Jain, Dilip Kumar Pal
Pelvic retroperitoneum is a bizarre location of an epidermoid cyst and obstructive voiding caused by it even being stranger. Voiding symptoms related to such an abnormal location of cyst are extremely rare and literature that taps into such cases is scarce. We are presenting here a case of 26-year-old man who was presented with obstructive lower urinary tract symptoms and chronic constipation. On evaluation, he was found to have well-defined cyst in pelvic retroperitoneum. Complete excision of the cyst was done; histopathology confirmed it as an epidermoid cyst...
May 18, 2018: BMJ Case Reports
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