194 results match your criteria 2-m requirement


Safety and feasibility of retrograde INOUE-BALLOON for balloon aortic valvuloplasty without rapid ventricular pacing during transcatheter aortic valve replacement.

Cardiovasc Interv Ther 2021 Jun 10. Epub 2021 Jun 10.

Division of Cardiology, Department of Internal Medicine, Iwate Medical University, 2-1-1, Idaidori, Yahaba, Iwate, 028-3694, Japan.

Rapid ventricular pacing (RVP) is commonly employed during transcatheter aortic valve replacement (TAVR); however, frequent TAVR is associated with worse prognoses. The retrograde INOUE-BALLOON (IB) allows balloon aortic valvuloplasty (BAV) without RVP. The aim of this study was to evaluate the feasibility of retrograde IB for TAVR preparation. Read More

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Sarcopenia is associated with blood transfusions in head and neck cancer free flap surgery.

Laryngoscope Investig Otolaryngol 2021 Apr 31;6(2):200-210. Epub 2021 Jan 31.

Department of Otolaryngology-Head and Neck Surgery Indiana University School of Medicine Indianapolis Indiana USA.

Objective: To determine if sarcopenia is a predictor of blood transfusion requirements in head and neck cancer free flap reconstruction (HNCFFR).

Methods: A single-institution, retrospective review was performed of HNCFFR patients with preoperative abdominal imaging from 2014 to 2019. Demographics, comorbidities (modified Charlson Comorbidity Index [mCCI]), skeletal muscle index (cm/m), oncologic history, intraoperative data, and 30-day postoperative complications (Clavien-Dindo score [CD]) were collected. Read More

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Urban-Rural Compliance Variability to COVID-19 Restrictions of Indigenous Fijian (iTaukei) Funerals in Fiji.

Authors:
Ron Vave

Asia Pac J Public Health 2021 Apr 14:10105395211005921. Epub 2021 Apr 14.

University of Hawai'i at Mānoa, Honolulu, HI, USA.

Research on coronavirus disease 2019 (COVID-19) has focused primarily on impacts in Western societies despite emerging evidence of increased vulnerability among indigenous peoples such as Pacific Islanders. Using Facebook public posts, this research assessed compliance to COVID-19 restrictions such as social gatherings (SG) and social distancing (SD) in non-COVID-19, indigenous Fijian (iTaukei) funerals in Fiji. Results showed 95% of the 20 funerals exceeding SG limits with greater, and highly variable crowd sizes in rural than urban communities. Read More

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Pre-Flight Calibration of the Mars 2020 Rover Mastcam Zoom (Mastcam-Z) Multispectral, Stereoscopic Imager.

Space Sci Rev 2021 18;217(2):29. Epub 2021 Feb 18.

Malin Space Science Systems, San Diego, CA 92121 USA.

The NASA rover Mast Camera Zoom (Mastcam-Z) system is a pair of zoomable, focusable, multi-spectral, and color charge-coupled device (CCD) cameras mounted on top of a 1.7 m Remote Sensing Mast, along with associated electronics and two calibration targets. The cameras contain identical optical assemblies that can range in focal length from 26 mm ( ) to 110 mm ( ) and will acquire data at pixel scales of 148-540 μm at a range of 2 m and 7. Read More

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February 2021

The Influence of Concentration and Temperature on the Membrane Resistance of Ion Exchange Membranes and the Levelised Cost of Hydrogen from Reverse Electrodialysis with Ammonium Bicarbonate.

Membranes (Basel) 2021 Feb 16;11(2). Epub 2021 Feb 16.

Department of Energy and Process Engineering, Norwegian University of Science and Technology, Kolbjørn Hejes vei 1B, NO-7491 Trondheim, Norway.

The ohmic resistances of the anion and cation ion-exchange membranes (IEMs) that constitute a reverse electrodialysis system (RED) are of crucial importance for its performance. In this work, we study the influence of concentration (0.1 M, 0. Read More

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February 2021

Voltammetric Sensor of Potentially Bioavailable Inorganic Mercury in Marine Aquatic Systems Based on Gel-Integrated Nanostructured Gold-Based Microelectrode Arrays.

ACS Sens 2021 03 18;6(3):925-937. Epub 2021 Feb 18.

Ecole Polytechnique Fédérale de Lausanne (EPFL), 2002 Neuchâtel 2, Switzerland.

The development and field validation of newly designed nanostructured gold-plated gel-integrated microelectrode (Au-GIME) arrays applied to the direct square wave anodic stripping voltammetry (SWASV) quantification of the potentially bioavailable inorganic mercury (Hg(II)) species in the coastal area are presented. The Au-GIME consists of arrays of 100-500 interconnected iridium (Ir)-based microdisks that are electroplated with renewable Au nanoparticles (AuNPs) or Au nanofilaments (AuNFs) and covered with an agarose gel. The gel protects the sensor surface from fouling and ensures that mass transport of analytes toward the sensor surface is by pure diffusion only and therefore independent of the ill-controlled convective conditions of the media. Read More

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Lactate regulates autophagy through ROS-mediated activation of ERK1/2/m-TOR/p-70S6K pathway in skeletal muscle.

J Cell Commun Signal 2021 Mar 4;15(1):107-123. Epub 2021 Jan 4.

Department of Exercise physiology, Faculty of Physical Education and Sport Sciences, Shahid Bahonar University of Kerman, Kerman, Iran.

The role of autophagy and lysosomal degradation pathway in the regulation of skeletal muscle metabolism was previously studied. However, underlying molecular mechanisms are poorly understood. L-lactate which is utilized as an energetic substrate by skeletal muscle can also augment genes expression related to metabolism and up-regulate those being responsive to reactive oxygen species (ROS). Read More

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Development of an unmodified screen-printed graphene electrode for nonenzymatic histamine detection.

Anal Methods 2020 11 30;12(44):5407-5414. Epub 2020 Oct 30.

Electroanalytical and Imaging Sensor Research Group (EISRG), Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Wattana, Bangkok 10110, Thailand.

The high requirement for food quality control has inspired the creation of high-performance sensing, cost-effectiveness, and ease to use. Therefore, the aim of this work is to develop nonenzymatic electrochemical platforms for direct detection of histamine using unmodified screen-printed graphene electrodes (SPGEs) for their applications such as evaluation of fish freshness. In alkaline media (0. Read More

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November 2020

Seawater neutralization and gypsum amelioration of bauxite refining residue to produce a plant growth medium.

Sci Total Environ 2021 Apr 16;763:143046. Epub 2020 Oct 16.

The University of Queensland, School of Agriculture and Food Sciences, St Lucia, Queensland 4072, Australia.

Alumina production waste (bauxite refining residue) is highly alkaline, saline, and sodic, and hence cannot support plant growth for revegetation. Gypsum (CaSO.2HO) amendment of bauxite residue can lower alkalinity and improve the residue Ca status, but given the large gypsum requirement, efficient gypsum use is imperative. Read More

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Sarcopenia in Cirrhosis: Fallout on Liver Transplantation.

J Clin Exp Hepatol 2020 Sep-Oct;10(5):467-476. Epub 2019 Dec 31.

Department of Hepato Pancreato Biliary and Liver Transplant Surgery, Institute of Liver and Biliary Sciences, New Delhi, India.

Background: Liver transplantation (LT) is a game changer in cirrhosis. Poor muscle mass defined as sarcopenia may potentially upset the LT scoreboard.

Aim: To assess the prevalence and impact of sarcopenia on the intraoperative and early postoperative outcomes in Indian patients undergoing LT. Read More

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December 2019

Three-Dimensional Printed Miniature Fiber-Coupled Multipass Cells with Dense Spot Patterns for ppb-Level Methane Detection Using a Near-IR Diode Laser.

Anal Chem 2020 Oct 9;92(19):13034-13041. Epub 2020 Sep 9.

Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, United States.

Tunable diode laser absorption spectroscopy (TDLAS) based on a multipass cell (MPC) is a powerful analytical tool and is widely applied to air quality monitoring, industrial process control, and medical diagnostics. However, the conventional MPC as a core component in TDLAS devices has a large size, low utilization efficiency of the mirror surfaces, and tight optical alignment tolerances. In this paper, we design and fabricate a mini-MPC with an optical absorption path length of 4. Read More

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October 2020

Plant morphology and seed germination responses of seagrass (Zostera japonica) to water depth and light availability in Ailian Bay, northern China.

Mar Environ Res 2020 Dec 11;162:105082. Epub 2020 Aug 11.

CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; University of Chinese Academy of Sciences, Beijing, 100049, China.

Poor water quality and light reduction owing to anthropogenic impacts are the most widespread causes behind marine submerged angiosperm (seagrass) declines, worldwide. Seagrasses could respond to sustained environmental stresses, such as increasing water depth and light reduction, through morphological changes, particularly shoot density and/or biomass reductions. The seagrass Zostera japonica Asch. Read More

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December 2020

Independent Influence of Skin Temperature on Whole-Body Sweat Rate.

Med Sci Sports Exerc 2020 11;52(11):2423-2429

US Army Research Institute of Environmental Medicine, Natick, MA.

Purpose: It is often assumed that a person with a higher mean skin temperature (Tsk) will sweat more during exercise. However, it has not yet been demonstrated whether Tsk describes any individual variability in whole-body sweat rate (WBSR) independently of the evaporative requirement for heat balance (Ereq).

Methods: One hundred forty bouts of 2-h treadmill walking completed by a pool of 21 participants (23 ± 4 yr, 174 ± 8 cm, 76 ± 11 kg, 1. Read More

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November 2020

Highly Integrated Guidewire Ultrasound Imaging System-on-a-Chip.

IEEE J Solid-State Circuits 2020 May 30;55(5):1310-1323. Epub 2020 Jan 30.

Bionic Sciences Inc., Atlanta, GA 30316 USA.

In this article, we present a highly integrated guidewire ultrasound (US) imaging system-on-a-chip (GUISoC) for vascular imaging. The SoC consists of a 16-channel US transmitter (Tx) and receiver (Rx) electronics, on-chip power management IC (PMIC), and quadrature sampler. Using a synthetic aperture imaging algorithm, a Tx/Rx pair, connected to capacitive micromachined ultrasound transducers (CMUTs), can be activated at any time. Read More

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A Fine-Tuned Positioning Algorithm for Space-Borne GNSS Timing Receivers.

Sensors (Basel) 2020 Apr 19;20(8). Epub 2020 Apr 19.

Department of Electronics Engineering, Tsinghua University, Beijing 100084, China.

To maximize the usage of limited transmission power and wireless spectrum, more communication satellites are adopting precise space-ground beam-forming, which poses a rigorous positioning and timing requirement of the satellite. To fulfill this requirement, a space-borne global navigation satellite system (GNSS) timing receiver with a disciplined high-performance clock is preferable. The space-borne GNSS timing receiver moves with the satellite, in contrast to its stationary counterpart on ground, making it tricky in its positioning algorithm design. Read More

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Field survey to evaluate space allowances for dairy cows in Great Britain.

J Dairy Sci 2020 Apr 31;103(4):3745-3759. Epub 2020 Jan 31.

School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington Campus, Leicestershire, LE12 5RD, United Kingdom. Electronic address:

Housing conditions can affect health of cows by increasing exposure to biological, chemical, and physical hazards, resulting in increased disease. A report in 2014 indicated that 99% of UK dairy cows are housed during winter months and that an increasing number of farms are committing to year-round indoor-housing management systems. Current literature does not provide a clear understanding of the relationship between cow health, welfare, and production, and the housing environment. Read More

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Task-Specific Supported Liquid Membrane for Actinide Assay in Aqueous Streams by Thermal Ionization Mass Spectrometry.

Anal Chem 2019 11 1;91(22):14383-14391. Epub 2019 Nov 1.

Fuel Chemistry Division , Bhabha Atomic Research Centre , Trombay, Mumbai 400 085 , India.

Thermal ionization mass spectrometry is the most commonly used technique for the determination of Pu isotopic composition and concentration in complex matrices but involves multiple steps including sample pretreatment, removal of matrix, preconcentration of Pu, and loading on a rhenium filament for TIMS analysis. The present work reports the synthesis of the ,'-dioctyl-α-hydroxyacetamide (DOHA) functionalized supported liquid membrane that offered dual functions: (i) matrix elimination and/or preconcentration of actinides from complex aqueous samples and (ii) served as a loading substrate for TIMS analysis. The ligand composition in the membrane can be tuned aiming either for selective preconcentration of Pu from an aqueous matrix or for bulk removal of actinides. Read More

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November 2019

Tricolor visible-light laser diodes based visible light communication operated at 40.665 Gbit/s and 2 m free-space transmission.

Opt Express 2019 Sep;27(18):25072-25077

Visible light communication (VLC) can provide a dedicated, secure, and high data rate wireless transmission link. It has gained considerable attentions recently, and is considered as one of the promising technologies for beyond 5G mobile and wireless communications. In this work, we demonstrate a VLC system with a recorded data rate of 40. Read More

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September 2019

Locating Ultrasonic Signals Employing MEMS-On-Fiber Sensors.

Sensors (Basel) 2019 Aug 26;19(17). Epub 2019 Aug 26.

Key Laboratory of Micro/Nano Systems for Aerospace (Ministry of Education), Northwestern Polytechnical University, Xi'an 710072, China.

Sound sensing finds wide applications in various fields, such as underwater detection, structural health monitoring, and medical diagnosis, to name just a few. Based on our previously developed MEMS-on-fiber sensors, showing the advantages of low cost, small volume, and high performance, a three-dimensional ultrasonic localization system employing four such sensors was established in this work. A time difference of arrival (TDOA) algorithm was utilized to analyze the acquired data and then calculate the accurate position of the ultrasonic signal source. Read More

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Effects of Developmental Task Constraints on Kinematic Synergies during Catching in Children with Developmental Delays.

J Mot Behav 2020 7;52(5):527-543. Epub 2019 Aug 7.

Faculty of Health and Well-Being, Sheffield Hallam University, Sheffield, UK.

The aim of this study was to examine effects of a task intervention on kinematic synergies in catching. Participants were young children (5.58 ± 0. Read More

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[Design of an axial blood pump of diffuser with splitter blades and cantilevered main blades].

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi 2019 Jun;36(3):379-385

State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037,

An implantable axial blood pump was designed according to the circulation assist requirement of severe heart failure patients of China. The design point was chosen at 3 L/min flow rate with 100 mm Hg pressure rise when the blood pump can provide flow rates of 2-7 L/min. The blood pump with good hemolytic and anti-thrombogenic property at widely operating range was designed by developing a structure that including the spindly rotor impeller structure and the diffuser with splitter blades and cantilevered main blades. Read More

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Ultrasound-guided intermediate cervical plexus and additional peripheral facial nerve block for carotid endarterectomy : A prospective pilot study.

Anaesthesist 2018 12 1;67(12):907-913. Epub 2018 Oct 1.

Institut of Anatomy, Medical University of Rostock, Rostock, Germany.

Background And Objectives: Ultrasound-guided intermediate cervical plexus block with perivascular local anesthetic infiltration is an established anesthetic procedure for carotid endarterectomy. In this prospective pilot study an additional subplatysmal block of the superficial ansa cervicalis is presented for the first time. The target structures are the anastomoses between the facial nerve (cervical and marginal mandibular branches) and cervical plexus. Read More

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December 2018

Comparison of the treatment performance of a high rate algal pond and a facultative waste stabilisation pond operating in rural South Australia.

Water Sci Technol 2018 Aug;78(1-2):3-11

Health and Environment Group, College of Science and Engineering, Flinders University, GPO Box 2100, Adelaide 5001, Australia E-mail:

South Australian community wastewater management schemes (CWMS) treat wastewater using waste stabilisation ponds before disposal or reuse. This study compared the performance of a facultative pond, 6,300 m, 27.5 d theoretical hydraulic retention time (THRT), with a high rate algal pond (HRAP) operated at depths of 0. Read More

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Underwater wireless optical communication using an arrayed transmitter/receiver and optical superimposition-based PAM-4 signal.

Opt Express 2018 Feb;26(3):3087-3097

In this work, we propose an underwater wireless optical communication (UWOC) system using an arrayed transmitter/receiver and optical superimposition-based pulse amplitude modulation with 4 levels (PAM-4). At the transmitter side, we design a spatial summing scheme using a light emitting diode (LED) array, which is divided into two groups in a uniformly interleaved manner. With on-off keying (OOK) modulation for each group, optical superimposition-based PAM-4 can be realized. Read More

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February 2018

Ultraviolet and solar photocatalytic ozonation of municipal wastewater: Catalyst reuse, energy requirements and toxicity assessment.

Chemosphere 2017 Nov 13;186:669-676. Epub 2017 Aug 13.

Department of Environmental, Water and Earth Sciences, Tshwane University of Technology, Pretoria, South Africa.

The present study evaluated the treatment of municipal wastewater containing phenol using solar and ultraviolet (UV) light photocatalytic ozonation processes to explore comparative performance. Important aspects such as catalyst reuse, mineralization of pollutants, energy requirements, and toxicity of treated wastewater which are crucial for practical implementation of the processes were explored. The activity of the photocatalysts did not change significantly even after three consecutive uses despite approximately 2% of the initial quantity of catalyst being lost in each run. Read More

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November 2017

Head impact velocities in FIS World Cup snowboarders and freestyle skiers: Do real-life impacts exceed helmet testing standards?

Br J Sports Med 2018 Jan 8;52(1):32-40. Epub 2017 Jul 8.

Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sports Sciences, Oslo, Norway.

Introduction: Prior to the 2013-2014 season, the International Ski Federation (FIS) increased the helmet testing speed from a minimum requirement of 5.4 to 6.8 m/s for alpine downhill, super-G and giant slalom and for freestyle ski cross, but not for the other freestyle disciplines or snowboarding. Read More

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January 2018

CVVHD treatment with CARPEDIEM: small solute clearance at different blood and dialysate flows with three different surface area filter configurations.

Pediatr Nephrol 2016 10 30;31(10):1659-65. Epub 2016 Apr 30.

International Renal Research Institute of Vicenza (IRRIV), Vicenza, Italy.

Background: The CARdiorenal PEDIatric EMergency (CARPEDIEM) machine was originally designed to perform only continuous venovenous hemofiltration (CVVH) in neonatal and pediatric patients. In some cases, adequate convective clearance may not be reached because of a limited blood flow. In such conditions, the application of diffusive clearance [continuous venovenous hemodialysis (CVVHD)] would help optimize blood purification. Read More

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October 2016

A comparison of clinical efficacy between high frequency oscillatory ventilation and conventional ventilation with lung volume recruitment in pediatric acute respiratory distress syndrome: A randomized controlled trial.

Indian J Crit Care Med 2016 Feb;20(2):72-7

Department of Pediatrics, Division of Pediatric Pulmonary, Faculty of Medicine, King Chulalongkorn Memorial Hospital, Chulalongkorn University, Bangkok, 10330, Thailand.

Purpose: To determine the efficacy of lung volume recruitment maneuver (LVRM) with high frequency oscillatory ventilation (HFOV) on oxygenation, hemodynamic alteration, and clinical outcomes when compared to conventional mechanical ventilation (CV) in children with severe acute respiratory distress syndrome (ARDS).

Materials: We performed a randomized controlled trial and enrolled pediatric patients who were diagnosed to have severe ARDS upon pediatric intensive care unit (PICU) admission. LVRM protocol combined with HFOV or conventional mechanical ventilation was used. Read More

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February 2016

Exploring Structural and Physicochemical Profiles of Potential GSK-3β Inhibitors Using Structure- and Ligand-Based Modeling Studies.

Comb Chem High Throughput Screen 2016 ;19(4):298-306

Department of Chemical Technology, University of Calcutta, 92, A.P.C. Road, Kolkata-700009, India.

Glycogen synthase kinase-3β (GSK-3β) is a promising target for therapeutic invasion of Alzheimer's disease (AD). The kinase enzyme plays major role in pathological process for the formation of β-amyloid plaques and neurofibrillary tangles in AD. In the present study, structure-based pharmacophore and ligand-based 3D QSAR, HQSAR and pharmacophore mapping studies have been emphasized to explore the possible structural requirement of this potential kinase inhibitors using a structurally diverse set of compounds. Read More

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Prefrontal Cortex Activation Upon a Demanding Virtual Hand-Controlled Task: A New Frontier for Neuroergonomics.

Front Hum Neurosci 2016 16;10:53. Epub 2016 Feb 16.

Department of Life, Health and Environmental Sciences, University of L'Aquila L'Aquila, Italy.

Functional near-infrared spectroscopy (fNIRS) is a non-invasive vascular-based functional neuroimaging technology that can assess, simultaneously from multiple cortical areas, concentration changes in oxygenated-deoxygenated hemoglobin at the level of the cortical microcirculation blood vessels. fNIRS, with its high degree of ecological validity and its very limited requirement of physical constraints to subjects, could represent a valid tool for monitoring cortical responses in the research field of neuroergonomics. In virtual reality (VR) real situations can be replicated with greater control than those obtainable in the real world. Read More

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February 2016