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Hongyu Li, Yonggang Wei
BACKGROUND: Laparosopic hepatectomy for caudate lobe is classified as one of the most difficult procedures to perform.1 For malignant caudate lobe tumor which is close to hepatic veins, extended hemi-hepatectomy may be more suitable. METHODS: A 60-year-old man was diagnosed with hepatitis B virus infection-related hepatocellular carcinoma (HCC). His liver function was Child-Pugh A and ICG-15 test was 2.1%. Abdominal CT showed a 5 × 6 cm mass located in caudate lobe with middle and left hepatic vein encroached...
September 21, 2018: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
O L Khasanov, E S Dvilis, E F Polisadova, S A Stepanov, D T Valiev, V D Paygin, D V Dudina
The aim of the present work was to investigate the effect of the ultrasonic treatment on the optical and cathodoluminescent properties of translucent ZrO2 -8 mol.% Y2 O3 (YSZ) ceramics obtained by conventional sintering of the pressed compacts. Treatment by intense ultrasound during dry pressing of the YSZ nanopowder leads to an increase in the relative density, a decrease in the pore size and an increase in the grain size of the sintered ceramics. It was shown that when the ultrasonic treatment is applied, the optical absorption cutoff wavelength of the sintered material is shifted to longer wavelengths, while the optical density of the material increases over the whole measurement spectrum...
September 12, 2018: Ultrasonics Sonochemistry
Hao Yang, Qingxia Zhang, Ying Chen, Yong Huang, Fang Yang, Zhong Lu
ZnO coated fabrics have attracted wide attentions due to their antibacterial and photocatalytic self-cleaning properties. However, the photo-response of ZnO only in ultraviolet region limits its application. In this paper, ZnO/BiOBr functionalized cotton fabrics were synthesized by a facile and time-saving ultrasonic-microwave combined method. Compared with ZnO coated fabric, the photocatalytic activity of ZnO/BiOBr coated fabric under visible light irradiation was remarkably improved at no sacrifice of its antibacterial activity...
December 1, 2018: Carbohydrate Polymers
Yanxiao Jiang, Pinyi Ma, Xinpei Li, Huilan Piao, Dan Li, Ying Sun, Xinghua Wang, Daqian Song
In this work, a metal-organic framework material MIL-101(Cr) was prepared and used as the sorbent for a laboratory-made semi-automated microextraction in packed syringe (MEPS). Six triazine herbicides, including desmetryn, prometon, ametryn, prometryn, atraton, and dipropetryn, that are commonly found in corn samples, were extracted and determined by the MEPS method and high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). Key parameters affecting the extraction efficiencies, including type of extraction solvent, type and amount of sorbent, time of ultrasonic extraction and adsorption, and type, volume and flow rate of elution solvent, were investigated...
September 10, 2018: Journal of Chromatography. A
Stamatina Passalidou, Filip Calberson, Mieke De Bruyne, Roeland De Moor, Maarten August Meire
INTRODUCTION: The purpose of this study was to compare in vitro the canal and isthmus debridement of manual-dynamic, passive ultrasonic, and laser-activated irrigation with an Er:YAG laser in mesial roots of human mandibular molars. METHODS: Fifty extracted mandibular molars with an isthmus were embedded in resin and sectioned axially 4 mm from the apex. The teeth were reassembled with guide pins and bolts, and the mesial canals were instrumented up to a ProTaper F2 rotary file (Dentsply Maillefer, Ballaigues, Switzerland)...
September 18, 2018: Journal of Endodontics
Emilia Wirth, Lilia Sabantina, Marcus O Weber, Karin Finsterbusch, Andrea Ehrmann
Electrospinning can be used to create nanofiber mats for diverse applications, from wound dressings and tissue engineering to filters for medical and biotechnological applications. In most of these applications, it is necessary to fix the nanofiber mat on a macroscopic textile fabric, on another nanofiber mat or within a frame to keep it at the desired position. Due to their extremely low thickness and areal mass, however, nanofiber mats are easily destroyed by sewing, and in several situations glued bonds are too thick and not flexible enough...
September 20, 2018: Nanomaterials
Guillaume Goudot, Clément Papadacci, Blandine Dizier, Véronique Baudrie, Irmine Ferreira, Catherine Boisson-Vidal, Mickaël Tanter, Xavier Jeunemaître, Mathieu Pernot, Emmanuel Messas, Tristan Mirault
OBJECTIVE:  Vascular Ehlers-Danlos syndrome (vEDS) is associated with arterial ruptures due to a mutant gene encoding collagen type III (Col-III). To better understand the role of Col-III, we aimed at evaluating aortic stiffness and dynamic stiffening in vEDS mouse models, with either a quantitative (col3KO mice) or a qualitative Col-III defect (col3KI mice). MATERIALS AND METHODS:  Abdominal aortic wall pulse wave velocities (PWV) in col3KO and col3KI mice were compared to their respective wild type (WT) littermates using a 15 MHz ultrafast ultrasonic transducer...
September 21, 2018: Ultraschall in der Medizin
Megan R Warren, Morgan S Spurrier, Eric D Roth, Joshua P Neunuebel
Ultrasonic vocalizations (USVs) are believed to play a critical role in mouse communication. Although mice produce USVs in multiple contexts, signals emitted in reproductive contexts are typically attributed solely to the male mouse. Only recently has evidence emerged showing that female mice are also vocally active during mixed-sex interactions. Therefore, this study aimed to systematically quantify and compare vocalizations emitted by female and male mice as the animals freely interacted. Using an eight-channel microphone array to determine which mouse emitted specific vocalizations during unrestrained social interaction, we recorded 13 mixed-sex pairs of mice...
2018: PloS One
Dibya Rani, Rahul Saxena, Baibaswata Nayak, Sudha Srivastava
Hepatitis E virus infection is responsible for acute viral hepatitis and associated with high mortality and still birth in pregnant women in developing countries. We report expression of truncated forms of HEV ORF2 as potential vaccine candidates for nanoparticle-based delivery. These two truncated ORF2 proteins (54 kDa and 26 kDa) have been reported to be highly immunogenic and can be used as nanoparticle-based vaccine candidate. The bacterial expressed protein was purified by affinity chromatography and further confirmed by western blot using anti-HEV antibody...
October 2018: 3 Biotech
Alexis Faure, Anne Nosjean, Elsa Pittaras, Adeline Duchêne, Annie Andrieux, Sylvie Gory-Fauré, Mathieu Charvériat, Sylvie Granon
Social and communication impairments are common features of psychiatric disorders. Animal models of schizophrenia display various social deficits due to difference in tests, mouse strains and drugs. Moreover, communication deficits have not been studied. Our objectives were to assess and compare three major features of social cognition in different mouse models of schizophrenia: interest for a social stimulus, organization and acceptance of social contact, and acoustic communication to question whether mouse models for schizophrenia with social dysfunction also exhibit vocal communication defects...
September 17, 2018: Neuropharmacology
Shadan Amiri, Azadeh Shakeri, Mahmoud Reza Sohrabi, Sepideh Khalajzadeh, Ensieh Ghasemi
The effectiveness of ultrasound-assisted extraction (UAE) of Aesculus hippocastanum fruit oil was investigated using methanol as a solvent. The study compared extraction yields using UAE and methanol with soxhlet. The effects of three extraction parameters, namely temperature, time and the ratio of solvent (volume) to plant material (weight) were optimized using both a Box-Behnken design (BBD) and response surface methodology (RSM). The highest extraction yields were obtained for UAE at 60 °C and 56.5 min with a ratio of solvent to plant material weight of 45:1...
January 15, 2019: Food Chemistry
Thiago K Nishimura, Thiago Martins, Maria Isabel da Silva, Bruna S Lafuente, José Ricardo de Garla Maio, Mario Binelli, Guilherme Pugliesi, Arlindo Saran Netto
The working hypothesis was that supplementation with progesterone (iP4) at early diestrus increases pregnancy rates of suckled beef cows with poor body condition score (BCS) and/or in anestrus when cows are submitted to timed insemination (TAI). The time of ovulation among suckled multiparous (n = 1270) and primiparous (n = 303) Nelore cows was synchronized using an estradiol/P4-based protocol for TAI (D0). At Day ‒10, visual evaluation of BCS was performed (scale = 1-5) and animals were classified according to an ovarian activity (OA) score: (OA1) absence of CL and presence of follicles ≥ 8 mm, (OA2) absence of CL and presence of follicles < 8 mm and (OA3) presence of corpus luteum (CL)...
August 30, 2018: Animal Reproduction Science
Junshan Zhang, Wei Ren, Yantao Liu, Xiaoqing Wu, Chunlong Fei, Yi Quan, Qifa Zhou
A lead-free 0.94(Na0.5 Bi0.5 ) TiO₃-0.06 BaTiO₃ (BNT-BT) thick film, with a thickness of 60 μm, has been fabricated using a tape-casting method. The longitudinal piezoelectric constant, clamped dielectric permittivity constant, remnant polarization and coercive field of the BNT-BT thick film were measured to be 150 pC/N, 1928, 13.6 μC/cm², and 33.6 kV/cm, respectively. The electromechanical coupling coefficient kt was calculated to be 0.55 according to the measured electrical impedance spectrum. A high-frequency plane ultrasound transducer was successfully fabricated using a BNT-BT thick film...
September 19, 2018: Sensors
Kun Yang, Bin Zhong, Qi Huang, Chao He, Zhi-Yong Huang, Qingyuan Wang, Yong-Jie Liu
Ultrasonic fatigue tests up to 1010 cycles were performed on a turbine engine titanium alloy (Ti-8Al-1Mo-1V) at the stress ratio ( R ) of -1 with smooth specimens and at R = -1, 0.1 and 0.5 with notched specimens. As a result, with increase of fatigue life, the source of reduced fatigue life caused by multi-point surface crack initiation changes from crack propagation stage to crack initiation stage in the high cycle fatigue regime. Notch effect further promotes the degeneration of high cycle and very high cycle fatigue strength at R > -1...
September 19, 2018: Materials
Rymantas J Kazys, Liudas Mazeika, Reimondas Sliteris, Justina Sestoke
Ultrasonic non-destructive testing techniques (NDT) based on the application of guided waves are already used for inspection of plate-type structures made of various materials, including composite materials. Air-coupled ultrasonic techniques are used to test such structures by means of guided waves. The objective of this research was development and investigation of air-coupled excitation of a slow A₀ Lamb wave mode in thin plastic films by a PMN-32%PT ultrasonic array. It is known that when the velocity of the A₀ mode in the film is less than the ultrasound velocity in air no leaky wave is observed in a surrounding air...
September 19, 2018: Sensors
Ting Chia Chang, Marcus J Weber, Jayant Charthad, Spyridon Baltsavias, Amin Arbabian
We present an analytical framework for optimizing the efficiency of ultrasonic wireless power links for implantable devices scaled down to sub-mm dimensions. Key design insights and tradeoffs are considered for various parameters including the operating frequency, the transmission depth, the size of the transmitter, the impedance and the aperture efficiency of the miniaturized receiver, and the interface between the receiver and the power recovery chain on the implant. The performance of spherically focused transducers as ultrasonic transmitters is analyzed to study the limits and the tradeoffs...
September 20, 2018: IEEE Transactions on Biomedical Circuits and Systems
Milomir Kovac, Yaroslav A Litvin, Ruslan O Aliev, Elena Y Zakirova, Catrin S Rutland, Andrey P Kiyasov, Albert A Rizvanov
This clinical study describes the intralesional application of the plasmid DNA encoding two therapeutic species-specific growth factors: vascular endothelial growth factor (VEGF164) and fibroblast growth factor 2 (FGF2) in seven horses to restore naturally occurring injuries of the superficial digital flexor tendon (SDFT) (tendinitis) and in three horses with suspensory ligament branch desmitis. Following application all horses were able to commence a more rapid exercise program in comparison to standardized exercise programs...
2018: Frontiers in Pharmacology
Kristina Emily Schmidt, Thorsten Mathias Auschill, Anton Sculean, Nicole Birgit Arweiler
OBJECTIVES: To investigate tissue health around implants with newly attached superstructures over 12 months of preventive maintenance appointments and instrumentation when necessary. MATERIAL AND METHODS: In a randomized, split-mouth study 32 implants (8 participants with 4 implants each) received followed-up care every 3 months after superstructure attachment. Implants and superstructures were randomly assigned to four treatment groups and treated if necessary: (1) titanium curettes (TC), (2) stainless steel ultrasonic tip (PS), (3) erythritol air-polishing powder (EP), or (4) rubber cup polishing (CON)...
September 19, 2018: Clinical Oral Investigations
Bo-Chul Shin, Carlos Cepeda, Ana María Estrada-Sánchez, Michael S Levine, Laya Hodaei, Yun Dai, Jai Jung, Amit Ganguly, Peter Clark, Sherin U Devaskar
We created a neural-specific conditional murine glut3 ( Slc2A3 ) deletion ( glut3flox/flox/nestin-Cre+- ) to examine the effect of a lack of Glut3 on neurodevelopment. In comparison to age-matched glut3flox/flox = wild type ( wt ) and heterozygotes ( glut3flox/+/nestin-Cre+ ), >90% reduction in male and female brain Glut3 occurred by postnatal (PN) day 15 in glut3flox/flox/nestin-Cre+ This genetic manipulation caused a diminution in brain weight and cortical thickness at PN15, a reduced number of dendritic spines, and less ultrasonic vocalizations...
September 19, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
Jiajun Zeng, Huanhua Xu, Yu Cai, Yan Xuan, Jia Liu, Yue Gao, Qingxian Luan
(-)-Epigallocatechin gallate (EGCG), is the main catechin found in green tea, and has several beneficial effects. This study investigated the stability of EGCG aqueous solution under different stored and ultrasonic conditions to determine whether it can be used with an ultrasonic dental scaler to treat periodontal infection. Four concentrations (0.05, 0.1, 0.15, 2 mg/mL) of EGCG aqueous solution were prepared and stored under four different conditions (A: Exposed to neither sunlight nor air, B: Exposed to sunlight, but not air, C: Not exposed to sunlight, but air, D: Exposed to sunlight and air) for two days...
September 18, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
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