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https://www.readbyqxmd.com/read/28651210/associations-between-perfluorinated-alkyl-acids-in-blood-and-ovarian-follicular-fluid-and-ovarian-function-in-women-undergoing-assisted-reproductive-treatment
#1
Jessica A McCoy, Jacqueline T Bangma, Jessica L Reiner, John A Bowden, John Schnorr, Michael Slowey, Thomas O'Leary, Louis J Guillette, Benjamin B Parrott
Endocrine disrupting contaminants, in combination with other environmental variables, are associated with altered reproductive health. Assisted reproductive technology (ART) procedures offer valuable opportunities to explore the connections between environmental contaminants in the ovarian microenvironment and measures of fertility, including impaired responsiveness to gonadotropins. Here, we investigate an emerging class of environmental contaminants, the perfluorinated alkyl acids (PFAAs), to determine whether ovarian contaminant levels are associated with measures of ovarian responsiveness and fertility outcomes in a South Carolina population of women undergoing ART...
June 23, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28651106/computer-based-speech-therapy-for-childhood-speech-sound-disorders
#2
REVIEW
Lisa Furlong, Shane Erickson, Meg E Morris
BACKGROUND: With the current worldwide workforce shortage of Speech-Language Pathologists, new and innovative ways of delivering therapy to children with speech sound disorders are needed. Computer-based speech therapy may be an effective and viable means of addressing service access issues for children with speech sound disorders. AIM: To evaluate the efficacy of computer-based speech therapy programs for children with speech sound disorders. METHOD: Studies reporting the efficacy of computer-based speech therapy programs were identified via a systematic, computerised database search...
June 15, 2017: Journal of Communication Disorders
https://www.readbyqxmd.com/read/28651050/brillouin-oscillations-from-single-au-nanoplate-opto-acoustic-transducers
#3
Kuai Yu, Tuphan Devkota, Gary Beane, Guo Ping Wang, Gregory V Hartland
Brillouin oscillations, which are GHz frequency waves that arise from the interaction of light with acoustic waves, are experiencing increasing applications in biology and materials science. They provide information about the speed of sound in the material they propagate in, and have recently been used in imaging applications. In the current study Brillouin oscillations in glass, water and polymer (PMMA) are observed through ultrafast transient reflectivity measurements using chemically synthesized Au nanoplates as opto-acoustic transducers...
June 26, 2017: ACS Nano
https://www.readbyqxmd.com/read/28650809/beam-diffraction-effects-in-the-backward-wave-regions-of-viscoelastic-leaky-lamb-modes-for-plate-transmission-at-normal-incidence
#4
Magne Aanes, Kjetil D Lohne, Per Lunde, Magne Vestrheim
Plane-wave theory for fluid-embedded isotropic plates is often used in ultrasonic guided-wave applications, and to estimate wall thickness, corrosion, or sound velocities in plates and pipes. In such structures, measured ultrasonic transmission through the solid material is affected by acoustic beam diffraction effects, and the results may deviate from plane-wave descriptions, which are insufficient to describe the complex effects that occur. When exciting a fluid-embedded steel plate with a pulsed ultrasonic beam at normal incidence, resonance frequency downshift, axial sound pressure level (SPL) increase, and beam narrowing have been observed, for measured resonance peaks in the frequency regions of certain leaky Lamb mode branches of the plate...
June 26, 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28650791/deproteinizing-agents-as-an-effective-enamel-bond-enhancer-an-in-vitro-study
#5
Pallavi Hasija, Vinod Sachdev, Shivani Mathur, Rishi Rath
OBJECTIVE: The aim of this study was to compare the effect of different deproteinizing agents on shear bond strength of composite to primary teeth enamel. STUDY DESIGN: Forty sound primary molars divided in 4 groups of 10 teeth each. In control group 1, enamel was etched for 60 seconds with 37% phosphoric acid and rinsed with water. Group 2: after acid etching deproteinizing agent 5 % sodium hypochlorite was applied for 60 seconds and rinsed. Group 3: after acid etching deproteinizing agent papain gel was applied for 60 seconds and rinsed...
2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28650787/the-effect-of-casein-phosphopeptide-amorf-calcium-phosphate-and-acidulated-phosphate-fluoride-gel-on-dental-erosion-in-primary-teeth-an-in-vitro-study
#6
Eda Arat Maden, Özge Acar, Ceyhan Altun, Günseli Güven Polat
OBJECTIVE: This study aimed to investigate the effect of acidulated phosphate fluoride (APF) gel and casein phosphopeptide/amorphous calciumphosphate (CPP-ACP) on the dental erosion produced by carbonated soft drink in primary teeth. STUDY DESIGN: This study evaluated by an in vitro model the effect of APF gel and CPP-ACP on the dental enamel previously subjected to erosive challenge with carbonated soft drink. Sixty sound human primary molars were prepared by embedding the crown sections in acrylic resin blocks leaving the enamel surfaces exposed...
2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28650259/locomotor-effects-of-a-low-frequency-fire-alarm-on-c57bl-6-male-mice-a-preliminary-study
#7
Jessica M Povroznik, Robert E Faith, Matthew J Kessler, Frank N Ali, James Kosik, Stephen Prince, Elizabeth B Engler-Chiurazzi
Maintaining appropriate acoustic conditions for animal welfare and data collection are crucial in biomedical research facilities. Negative impacts of disruptive sound are known and can include auditory damage, immune function changes, and behavioral alterations. One type of disruptive sound occurring in research facilities is that of fire alarms. To ameliorate this problem, many facilities have incorporated the use of low-frequency fire alarms that emit tones outside the rodent audible range. The impact of these devices has been assumed to be negligible...
January 1, 2017: Laboratory Animals
https://www.readbyqxmd.com/read/28650181/racial-identity-invalidation-with-multiracial-individuals-an-instrument-development-study
#8
Marisa G Franco, Karen M O'Brien
OBJECTIVES: Racial identity invalidation, others' denial of an individual's racial identity, is a salient racial stressor with harmful effects on the mental health and well-being of Multiracial individuals. The purpose of this study was to create a psychometrically sound measure to assess racial identity invalidation for use with Multiracial individuals (N = 497). METHOD: The present sample was mostly female (75%) with a mean age of 26.52 years (SD = 9.60). The most common racial backgrounds represented were Asian/White (33...
June 26, 2017: Cultural Diversity & Ethnic Minority Psychology
https://www.readbyqxmd.com/read/28649291/animal-pitch-perception-melodies-and-harmonies
#9
Marisa Hoeschele
Pitch is a percept of sound that is based in part on fundamental frequency. Although pitch can be defined in a way that is clearly separable from other aspects of musical sounds, such as timbre, the perception of pitch is not a simple topic. Despite this, studying pitch separately from other aspects of sound has led to some interesting conclusions about how humans and other animals process acoustic signals. It turns out that pitch perception in humans is based on an assessment of pitch height, pitch chroma, relative pitch, and grouping principles...
2017: Comparative Cognition & Behavior Reviews
https://www.readbyqxmd.com/read/28649190/effects-of-light-and-sound-on-the-prefrontal-cortex-activation-and-emotional-function-a-functional-near-infrared-spectroscopy-study
#10
Shota Hori, Koichi Mori, Takehisa Mashimo, Akitoshi Seiyama
We constructed a near infrared spectroscopy-based real-time feedback system to estimate the subjects' emotional states using the changes in oxygenated hemoglobin concentration [Δ(oxy-Hb)] in the prefrontal cortex (PFC). Using this system, we investigated the influences of continual mild and equivocal stimuli consisting of lights and a reconstructed waterfall sound on Δ[oxy-Hb] in the PFC. The visual (light) and auditory (sound) stimuli changed randomly and independently, depending on the emotional states of the individual subjects...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28649123/extraovarian-primary-peritoneal-carcinomatosis-a-case-report
#11
Gregory Nicolas, Tony Kfoury, Hassan Fawaz, Mahdi Issa
BACKGROUND Extraovarian primary peritoneal carcinoma (EOPPC) is a rare malignant epithelial tumor with an age-adjusted incidence rate of 6.78 per million, which arises from the peritoneal lining with minimal or no ovarian involvement. EOPPC is a diagnosis of exclusion with the absence of other identifiable primary sites and after surgical assessment and consideration of the histological report to evaluate the extent of ovarian invasion. CASE REPORT A 66-year-old woman complained of mild postprandial epigastric pain...
June 26, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28648918/acoustic-and-elastic-properties-of-glycerol-in-oil-based-gel-phantoms
#12
Luciana C Cabrelli, Felipe W Grillo, Diego R T Sampaio, Antonio A O Carneiro, Theo Z Pavan
Phantoms are important tools for image quality control and medical training. Many phantom materials have been proposed for ultrasound; most of them use water as the solvent, but these materials have disadvantages such as dehydration and low temporal stability if not properly stored. To overcome these difficulties, copolymer-in-oil gel was proposed as an inert and stable material; however, speed of sound for these materials is still lower than what is described for most biological tissues. Here, we propose the glycerol dispersion in oil-based gels to modify the acoustic and elastic properties of copolymer-in-oil phantoms...
June 22, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28648887/adult-like-processing-of-naturalistic-sounds-in-auditory-cortex-by-3-and-9-month-old-infants
#13
Conor J Wild, Annika C Linke, Leire Zubiaurre-Elorza, Charlotte Herzmann, Hester Duffy, Victor K Han, David S C Lee, Rhodri Cusack
Functional neuroimaging has been used to show that the developing auditory cortex of very young human infants responds, in some way, to sound. However, impoverished stimuli and uncontrolled designs have made it difficult to attribute brain responses to specific auditory features, and thus made it difficult to assess the maturity of feature tuning in auditory cortex. To address this, we used functional magnetic resonance imaging (fMRI) to measure the brain activity evoked by naturalistic sounds (a series of sung lullabies) in two groups of infants (3 and 9 months) and adults...
June 22, 2017: NeuroImage
https://www.readbyqxmd.com/read/28648267/ecological-insights-into-the-dynamics-of-plant-biomass-degrading-microbial-consortia
#14
REVIEW
Diego Javier Jiménez, Francisco Dini-Andreote, Kristen M DeAngelis, Steven W Singer, Joana Falcão Salles, Jan Dirk van Elsas
Plant biomass (PB) is an important resource for biofuel production. However, the frequent lack of efficiency of PB saccharification is still an industrial bottleneck. The use of enzyme cocktails produced from PB-degrading microbial consortia (PB-dmc) is a promising approach to optimize this process. Nevertheless, the proper use and manipulation of PB-dmc depends on a sound understanding of the ecological processes and mechanisms that exist in these communities. This Opinion article provides an overview of arguments as to how spatiotemporal nutritional fluxes influence the successional dynamics and ecological interactions (synergism versus competition) between populations in PB-dmc...
June 19, 2017: Trends in Microbiology
https://www.readbyqxmd.com/read/28647851/a-questionnaire-survey-of-radiological-diagnosis-and-management-of-renal-dysplasia-in-children
#15
Giovanni Montini, Marco Busutti, Fatos Yalcinkaya, Adrian S Woolf, Stefanie Weber
BACKGROUND: The condition called renal dysplasia is considered to be a frequent cause of chronic kidney disease in children. Formally, it is defined by histological parameters. In current nephrology practice, however, the appearance of the kidneys on ultrasound scanning is often used as a basis for the diagnosis. METHODS: The European Society for Pediatric Nephrology Working Group on Congenital Anomalies of the Kidney and Urinary Tract hypothesized that the current diagnostic approach with regard to renal dysplasia was not homogeneous...
June 24, 2017: Journal of Nephrology
https://www.readbyqxmd.com/read/28647430/determining-the-relevant-criteria-for-three-dimensional-vocal-tract-characterization
#16
Rebecca R Vos, Damian T Murphy, David M Howard, Helena Daffern
OBJECTIVE: Soprano singers face a number of specific challenges when singing vowels at high frequencies, due to the wide spacing of harmonics in the voice source. The varied and complex techniques used to overcome these are still not fully understood. Magnetic resonance imaging (MRI) has become increasingly popular in recent years for singing voice analysis. This study proposes a new protocol using three-dimensional MRI to investigate the articulatory parameters relevant to resonance tuning, a technique whereby singers alter their vocal tract to shift its resonances nearer to a voice source harmonic, increasing the amplitude of the sound produced...
June 21, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28647062/high-resolution-computed-tomography-imaging-in-conductive-hearing-loss-what-to-look-for
#17
REVIEW
Manickam Subramanian, Ashish Chawla, Kabilan Chokkappan, Tze Lim, Jagadish Narayana Shenoy, Wilfred Chin Guan Peh
Conductive hearing loss (CHL) is caused by the disruption of the sound conductive chain that, in turn, may be due to diseases of the external and middle ear. High-resolution computed tomography (CT) is the imaging modality of choice to evaluate CHL because of its excellent spatial resolution. Along with clinical and otoscopic findings, CT also helps in the diagnosis and preoperative planning. This pictorial review aims to illustrate the CT features of common conditions causing CHL that may arise from the external and middle ear, as well as highlights some of the key imaging features that are helpful in management...
May 17, 2017: Current Problems in Diagnostic Radiology
https://www.readbyqxmd.com/read/28646131/insights-on-the-drivers-of-genetic-divergence-in-the-european-anchovy
#18
Gaetano Catanese, Romain Watteaux, Iratxe Montes, Marco Barra, Paola Rumolo, Diego Borme, Bruno Buongiorno Nardelli, Vincenzo Botte, Maria Grazia Mazzocchi, Simona Genovese, Iole Di Capua, Mikel Iriondo, Andone Estonba, Paolo Ruggeri, Valentina Tirelli, Vincenzo Caputo-Barucchi, Gualtiero Basilone, Angelo Bonanno, Daniele Iudicone, Gabriele Procaccini
Anchovies represent the largest world's marine fish catches and the current threats on their populations impose a sustainable exploitment based on sound scientific information. In the European anchovy (Engraulis encrasicolus), the existence of several populations has been proposed but a global view is missing. Using a multidisciplinary approach, here we assessed the divergence among different ecotypes and its possible causes. SNPs have revealed two functionally distinct ecotypes overlapping in the Central Mediterranean, with one ecotype confined near the river estuaries...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28645081/loudness-and-time-dependence-of-auditory-evoked-potentials-is-blunted-by-the-nmda-channel-blocker-mk-801
#19
Tobias Teichert
Amplitudes of auditory evoked potentials (AEP) increase with the intensity/loudness of sounds (loudness-dependence of AEP, LDAEP), and the time between adjacent sounds (time-dependence of AEP, TDAEP). Both, blunted LDAEP and blunted TDAEP are markers of altered auditory function in schizophrenia (SZ). However, while blunted LDAEP has been attributed to altered serotonergic function, blunted TDAEP has been linked to altered NMDA receptor function. Despite phenomenological similarities of the two effects, no common pharmacological underpinnings have been identified...
June 15, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28644548/repetitive-peripheral-magnetic-stimulation-for-activities-of-daily-living-and-functional-ability-in-people-after-stroke
#20
REVIEW
Ryo Momosaki, Naoki Yamada, Erika Ota, Masahiro Abo
BACKGROUND: Repetitive peripheral magnetic stimulation (rPMS) is a form of therapy that creates painless stimulation of deep muscle structures to improve motor function in people with physical impairment from brain or nerve disorders. Use of rPMS for people after stroke has been identified as a feasible approach to improve activities of daily living and functional ability. However, no systematic reviews have assessed the findings of available trials. The effect and safety of this intervention for people after stroke currently remain uncertain...
June 23, 2017: Cochrane Database of Systematic Reviews
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