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Matthieu Raveau, Atsushi Shimohata, Kenji Amano, Hiroyuki Miyamoto, Kazuhiro Yamakawa
Mutations and copy number variants affecting DYRK1A gene encoding the dual-specificity tyrosine phosphorylation-regulated kinase 1A are among the most frequent genetic causes of neurodevelopmental disorders including autism spectrum disorder (ASD) associated with microcephaly, febrile seizures and severe speech acquisition delay. Here we developed a mouse model harboring a frame-shift mutation in Dyrk1a resulting in a protein truncation and elimination of its kinase activity site. Dyrk1a+/- mice showed significant impairments in cognition and cognitive flexibility, communicative ultrasonic vocalizations, and social contacts...
December 6, 2017: Neurobiology of Disease
Ponnusamy Senthil Kumar, Sunita J Varjani, Subburaj Suganya
The present work explains the biosorption of malachite green dye from aquatic systems by nano zero valent iron stacked activated carbon (NZVI-AC), which was prepared by dual surface modification strategy. NZVI-AC was characterized by using FTIR, SEM-EDX, XRD and TGA. NZVI-AC exhibited efficient performance in dye biosorption properties. Experimental variables such as time, pH, dye concentration, temperature and biosorbent dosage influenced Langmuir adsorption capacity of 187.3 mg/g. The present biosorption system was best described by pseudo-first order kinetics...
December 6, 2017: Bioresource Technology
Imran Zada, Wang Zhang, Wangshu Zheng, Yuying Zhu, Zhijian Zhang, Jianzhong Zhang, Muhammad Imtiaz, Waseem Abbas, Di Zhang
The negative replica of biomorphic TiO2 with nano-holes structure has been effectively fabricated directly from nano-nipple arrays structure of cicada wings by using a simple, low-cost and highly effective sol-gel ultrasonic method. The nano-holes array structure was well maintained after calcination in air at 500 °C. The Ag nanoparticles (10 nm-25 nm) were homogeneously decorated on the surface and to the side wall of nano-holes structure. It was observed that the biomorphic Ag-TiO2 showed remarkable photocatalytic activity by degradation of methyl blue (MB) under UV-vis light irradiation...
December 8, 2017: Scientific Reports
Jiajun Tian, Xiaolong Dong, Shimin Gao, Yong Yao
In this study, a novel fiber-optic, multipoint, laser-ultrasonic actuator based on fiber core-opened tapers (COTs) is proposed and demonstrated. The COTs were fabricated by splicing single-mode fibers using a standard fiber splicer. A COT can effectively couple part of a core mode into cladding modes, and the coupling ratio can be controlled by adjusting the taper length. Such characteristics are used to obtain a multipoint, laser-ultrasonic actuator with balanced signal strength by reasonably controlling the taper lengths of the COTs...
November 27, 2017: Optics Express
Weibao Qiu, Juan Zhou, Yan Chen, Min Su, Guofeng Li, Huixia Zhao, Xianyi Gu, De Meng, Congzhi Wang, Yang Xiao, Kwok Ho Lam, Jiyan Dai, Hairong Zheng
Fundamental insights into the function of the neural circuits often follows from the advances in methodologies and tools for neuroscience. Electrode- and optical- based stimulation methods have been used widely for neuro-modulation with high resolution. However, they are suffering from inherent invasive surgical procedure. Ultrasound has been proved as a promising technology for neuro-stimulation in a non-invasive manner. However, no portable ultrasound system has been developed particularly for neuro-stimulation...
December 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
Rhona J Taberham, Adnan Raza, Aiman Alzetani, Edwin B Woo, Martin H Chamberlain, George Koulaxouzidis, Khalid M Amer
OBJECTIVE: The aim of the study was to report the safety and efficacy of video-assisted thoracoscopic (VATS) plication of the diaphragm at our institution between 2006 and 2016. METHODS: Adult patients selected on etiology and combination of investigations including plain chest x-ray, computed tomography of chest and abdomen, lung functions in supine and sitting positions, radiological/ultrasonic screening for diaphragmatic movement, and phrenic nerve conduction studies...
December 6, 2017: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
Jing Lin, Xiaohai Yuan, Gen Li, Yang Huang, Weijia Wang, Xin He, Chao Yu, Yi Fang, Zhenya Liu, Chengchun Tang
As a kind of macroscopic BN architectures, ultralight BN cellular materials with high porosity and great resilience would have broad range of applications in energy and environmental areas. However, creating such BN cellular materials in a large size has still been proven challenging. Here we report on the unique self-assembly of one-dimensional (1D) porous BN microfibers into an integral three-dimensional (3D) BN foam with open-cell cellular architectures. An ultrasonic-assisted self-assembly, freeze-drying and high-temperature pyrolysis process has been developed for the preparation of cellular BN foam with large size and desired shape...
December 8, 2017: ACS Applied Materials & Interfaces
Guillaume Maimbourg, Alexandre Houdouin, Thomas Deffieux, Mickael Tanter, Jean-Francois Aubry
The development of multi-element arrays for better control of the shape of ultrasonic beams has opened the way for focusing through highly aberrating media, such as the human skull. As a result, the use of brain therapy with transcranial-focused ultrasound has rapidly grown. Although effective, such technology is expensive. We propose a disruptive, low-cost approach that consists of focusing a 1-MHz ultrasound beam through a human skull with a single-element transducer coupled with a tailored silicone acoustic lens cast in a 3D-printed mold and designed using computed tomography-based numerical acoustic simulation...
December 8, 2017: Physics in Medicine and Biology
Hae-Won Choi, Seung-Hoon Um, Sang-Hoon Rhee
A new method to deliver fluoride using biodegradable poly(lactic-co-glycolic acid) microcapsules to suppress cariogenic bacterial growth during orthodontic treatment was investigated. A coaxial ultrasonic atomizer was used to encapsulate KF solution into microcapsules. The orthodontic adhesive resin disk containing fluoride loaded microcapsules (DFLM) was prepared by LED light curing. The microstructure of microcapsules, successful loading of KF, fracture strength, and shear bonding strength were assessed by FE-SEM, confocal laser scanning microscope, and general purpose testing machine, respectively...
January 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
Sungho Kim, Yoo-Seok Yoon, Ho-Seong Han, Jai Young Cho, YoungRok Choi
BACKGROUND: Gallbladder cancer (GBC) has been contraindicated for laparoscopic surgery since this procedure was introduced [1, 2]. Recently, however, there have been several reports of laparoscopic extended cholecystectomy for GBC, but most cases involved early GBC confined to the GB [3, 4]. This video describes our technique of laparoscopic extended cholecystectomy for T3 GBC. METHODS: A 77-year-old female presented with a gallbladder mass, which was incidentally detected during evaluation of back pain...
December 7, 2017: Surgical Endoscopy
Lateefat Olokoba, Tajul Islam, Nazmun Nahar, Abdulraheem Mahmoud, Abdulfatai Olokoba
Background: Dropped lens fragments into the vitreous are uncommon, but potentially sight threatening complications of cataract surgery. The recommended approach for removal of dropped lens matter is pars plana vitrectomy with or without ultrasonic emulsification with the fragmatome. This study aimed to determine the visual outcome following pars plana vitrectomy for dropped lens fragments complicating cataract surgery at 6 weeks, 3 months and 6 months. Methods: This study is a retrospective review of patients who had PPV as treatment for dropped lens fragments complicating cataract surgery at Ispahani Islamia Eye hospital and Institute...
July 2017: Ethiopian Journal of Health Sciences
Kunze Du, Jin Li, Fei Tian, Yan-Xu Chang
A simple nonionic detergent - based vortex- synchronized matrix solid-phase dispersion (ND-VSMSPD) method was developed to extract bioactive compounds in Forsythiae Fructus coupled with ultra high-performance liquid chromatography (UHPLC). Nonionic detergent Triton 114 was firstly used as a green elution reagent in vortex- synchronized MSPD procedure. The optimum parameters were investigated to attain the best results, including Florisil as sorbent, 2mL 10% (v/v) nonionic detergent Triton X-114 as the elution reagent, 1:1 of sample/sorbent ratio, grinding for 3min, and whirling for 2min...
December 4, 2017: Journal of Pharmaceutical and Biomedical Analysis
Taofiq Oludemi, Lillian Barros, M A Prieto, Sandrina A Heleno, Maria F Barreiro, Isabel C F R Ferreira
The extraction of triterpenoids and phenolic compounds from Ganoderma lucidum was optimized by using the response surface methodology (RSM), using heat and ultrasound assisted extraction techniques (HAE and UAE). The obtained results were compared with that of the standard Soxhlet procedure. RSM was applied using a circumscribed central composite design with three variables (time, ethanol content, and temperature or ultrasonic power) and five levels. The conditions that maximize the responses (extraction yield, triterpenoids and total phenolics) were: 78...
December 7, 2017: Food & Function
Olushola S Ayanda, Simphiwe M Nelana, Leslie F Petrik, Eliazer B Naidoo
The application of nano-TiO2 as adsorbent combined with ultrasound for the degradation of N-acetyl-para-aminophenol (AAP) from aqueous solution was investigated. The nano-TiO2 was characterized by means of powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS), and attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FTIR). Experimental results revealed that the adsorption of AAP by nano-TiO2 fitted the pseudo-second-order kinetic model, the equilibrium could be explained by the Freundlich isotherm and the treatment process is exothermic...
October 2017: Journal of Water and Health
David Gueorguiev, Eric Vezzoli, André Mouraux, Betty Lemaire-Semail, Jean-Louis Thonnard
When we touch an object or explore a texture, frictional strains are induced by the tactile interactions with the surface of the object. Little is known about how these interactions are perceived, although it becomes crucial for the nascent industry of interactive displays with haptic feedback (e.g. smartphones and tablets) where tactile feedback based on friction modulation is particularly relevant. To investigate the human perception of frictional strains, we mounted a high-fidelity friction modulating ultrasonic device on a robotic platform performing controlled rubbing of the fingertip and asked participants to detect induced decreases of friction during a forced-choice task...
December 2017: Journal of the Royal Society, Interface
Kai-Wen Huang, Po-Huang Lee, Tomokazu Kusano, Isabella Reccia, Kumar Jayant, Nagy Habib
Background: The aim of this study was to evaluate the oncological outcomes of hepatocellular carcinoma patients undergoing liver resection using cavitron ultrasonic surgical aspirator (CUSA) or radiofrequency (RF) based device Habib-4X.
. Study Design: We prospectively analyzed the data of 280 patients who underwent liver resection for hepatocellular carcinoma at our institution from 2010-2012 with follow up till August 2016. The CUSA was used in the 163 patients whilst Habib-4X in 117 patients...
November 7, 2017: Oncotarget
Murilo Priori Alcalde, Clóvis Monteiro Bramante, Rodrigo Ricci Vivan, Pablo Andrés Amorso-Silva, Flaviana Bombarda de Andrade, Marco Antonio Hungaro Duarte
MATERIAL AND METHODS: The aim of this study was evaluate the influence of ultrasonic activation (UA) of AH Plus to improve canal and isthmus filing, and analyse the antimicrobial effect against Enterococcus faecalis within dentinal tubules. Thirty mesial roots of mandibular first molars were selected and divided into 2 groups (n = 15): with and without UA of the sealer. Then the root canals were filled by using the single cone technique, and the specimens were sectioned at 2, 4 and 6 mm from the apex for stereomicroscope and confocal laser scanner microscopy (CLSM) analysis...
November 2017: Journal of Applied Oral Science: Revista FOB
Yuan Yang, Xiaoyuan Wei, Lei Zhang, Wenqing Yao
For achieving the power maximum transmission, the electrical impedance matching (EIM) for piezoelectric ultrasonic transducers is highly required. In this paper, the effect of EIM networks on the electromechanical characteristics of sandwiched piezoelectric ultrasonic transducers is investigated in time and frequency domains, based on the PSpice model of single sandwiched piezoelectric ultrasonic transducer. The above-mentioned EIM networks include, series capacitance and parallel inductance (I type) and series inductance and parallel capacitance (II type)...
December 6, 2017: Sensors
Wanzhu Zhang, Lin Wang, Bingzhi Dong
The fouling behavior during forward osmosis (FO) was investigated. Tannic acid was used as a model organic foulant for natural organic matter analysis since the main characteristics are similar, and calcium ions were added at different concentrations to explore the anti-pollution capability of FO membranes. The initial permeate flux and calcium ions strength were varied in different operating conditions to describe membrane fouling with membrane cleaning methods. The observed flux decline in FO changed dramatically with the type of foulant and the type of draw solution used to provide the osmotic driving force...
December 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
Hiew Thong Yap, Su Kong Ngien
Inflow and infiltration are important aspects of sewerage systems that need to be considered during the design stage and constantly monitored once the sewerage system is in operation. The aim of this research is to analyse the relationship of rainfall as well as inflow infiltration with sewage flow patterns through data collected from fieldwork. Three sewer pipelines were selected at the residential areas of Taman Lepar Hilir Saujana, Bandar Putra and Kota Sas for data collection. Sewage flow data were collected in terms of flowrate, velocity and depth of flow using flowmeters with ultrasonic sensors that utilize the continuous Doppler effect in the sewer pipelines, while rainfall intensity data were collected using rain gauges installed at the study locations...
December 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
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