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Comparison of Speech Recognition in Cochlear Implant Users with Different Speech Processors.

J Am Acad Audiol 2021 Jul 30;32(7):469-476. Epub 2021 Nov 30.

Cochlear Latino America, Panama City, Panama.

Background:  Speech recognition in noisy environments is a challenge for both cochlear implant (CI) users and device manufacturers. CI manufacturers have been investing in technological innovations for processors and researching strategies to improve signal processing and signal design for better aesthetic acceptance and everyday use.

Purpose:  This study aimed to compare speech recognition in CI users using off-the-ear (OTE) and behind-the-ear (BTE) processors. Read More

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Factors Associated with Speech-Recognition Performance in School-Aged Children with Cochlear Implants and Early Auditory-Verbal Intervention.

J Am Acad Audiol 2021 Jul 30;32(7):433-444. Epub 2021 Nov 30.

Haskins Laboratories, Yale University, New Haven, Connecticut.

Background:  Considerable variability exists in the speech recognition abilities achieved by children with cochlear implants (CIs) due to varying demographic and performance variables including language abilities.

Purpose:  This article examines the factors associated with speech recognition performance of school-aged children with CIs who were grouped by language ability.

Research Design:  This is a single-center cross-sectional study with repeated measures for subjects across two language groups. Read More

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Optimization of hydrogen-ion storage performance of tungsten trioxide nanowires by niobium doping.

Nanotechnology 2021 Nov 30. Epub 2021 Nov 30.

Key Laboratory of Low-dimensional Quantum Structures and Quantum Control Ministry of Education College of Physics and Information Science, Hunan Normal University, No 36 of Lushan Road, Yuelu District, Changsha 410081, Changsha, Hunan, 410081, CHINA.

The transport and storage of ions within solid state structures is a fundamental limitation for fabricate more advanced electrochemical energy storage, memristor, and electrochromic devices. Crystallographic shear structure can be induced in the tungsten bronze structures composed of corner-sharing WO6 octahedra by the addition of edge-sharing NbO6 octahedra, which might provide more storage sites and more convenient transport channels for external ions such as hydrogen ions and alkali metal ions. Here, we show that Nb2O5·15WO3 nanowires with long length-diameter ratio, smooth surface, and uniform diameter have been successfully synthesized by a simple hydrothermal method. Read More

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November 2021

Robust wave-feature adaptive heartbeat classification based on self-attention mechanism using a transformer model.

Physiol Meas 2021 Nov 30. Epub 2021 Nov 30.

Fudan University School of Basic Medical Sciences, Shanghai, CHINA.

Objective: Electrocardiography is a common method for screening cardiovascular diseases. Accurate heartbeat classification assists in diagnosis and has attracted great attention. In this paper, we proposed an automatic heartbeat classification method based on a transformer neural network using a self-attention mechanism. Read More

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November 2021

Photovoltaic performance and power conversion efficiency prediction of double fence porphyrins.

Phys Chem Chem Phys 2021 Nov 30. Epub 2021 Nov 30.

College of Science, Northeast Forestry University, Harbin 150040, Heilongjiang, China.

To explore high efficiency dye-sensitized solar cells (DSSCs), two experimentally derived (single fence and double fence porphyrins) and two theoretically designed zinc porphyrin molecules with D-D-π-A-A configurations were studied. Density functional theory and time-dependent density functional theory were employed to simulate these two experimental dyes and [email protected] systems to understand why the double fence porphyrin molecule exhibits better photovoltaic performance than the single fence porphyrin molecule. For the short-circuit current (), the various parameters that affected the experimental magnitude of were analyzed from different aspects of absorption, charge transfer and chemical parameters as well as an electron injection process. Read More

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November 2021

An improved African vultures optimization algorithm based on tent chaotic mapping and time-varying mechanism.

PLoS One 2021 30;16(11):e0260725. Epub 2021 Nov 30.

Northeast Asian Research Center, Jilin University, Changchun, China.

Metaheuristic optimization algorithms are one of the most effective methods for solving complex engineering problems. However, the performance of a metaheuristic algorithm is related to its exploration ability and exploitation ability. Therefore, to further improve the African vultures optimization algorithm (AVOA), a new metaheuristic algorithm, an improved African vultures optimization algorithm based on tent chaotic mapping and time-varying mechanism (TAVOA), is proposed. Read More

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November 2021

L-Shaped High Performance Schottky Barrier FET as Dielectrically Modulated Label Free Biosensor.

IEEE Trans Nanobioscience 2021 Nov 30;PP. Epub 2021 Nov 30.

In this work, we demonstrate the realization of L-Shaped Schottky Barrier FET as a biosensing device with improved sensitivity. The proposed device uses dual material gate with work functions of 4.2 eV (Al) and 4. Read More

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November 2021

A-GAS: a Probabilistic Approach for Generating Automated Gait Assessment Score for Cerebral Palsy Children.

IEEE Trans Neural Syst Rehabil Eng 2021 Nov 30;PP. Epub 2021 Nov 30.

Gait disorders in children with cerebral palsy (CP) affect their mental, physical, economic, and social lives. Gait assessment is one of the essential steps of gait management. It has been widely used for clinical decision making and evaluation of different treatment outcomes. Read More

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November 2021

Multi-target Transcranial Ultrasound Therapy in Small Animals Based on Phase-only Acoustic Holographic Lens.

IEEE Trans Ultrason Ferroelectr Freq Control 2021 Nov 30;PP. Epub 2021 Nov 30.

Transcranial ultrasound therapy has become a non-invasive method for treating neurological and psychiatric disorders, and studies have further demonstrated that multi-target transcranial ultrasound therapy is a better solution. At present, multi-target transcranial ultrasound therapy in small animals can only be achieved by the multi-transducer or phased array. However, multiple transducers may cause spatial interference, and the phased array system is complicated, expensive, and especially unsuitable for small animals. Read More

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November 2021

Reversible Data Hiding by Using CNN Prediction and Adaptive Embedding.

IEEE Trans Pattern Anal Mach Intell 2021 Nov 30;PP. Epub 2021 Nov 30.

In the field of reversible data hiding (RDH), how to predict an image and embed a message into the image with smaller distortion are two important aspects. In this paper, we propose a novel and efficient RDH method by innovating an intelligent predictor and an adaptive embedding way. In the prediction stage, we first constructed a convolutional neural network (CNN) based predictor by reasonably dividing an image into four parts to exploit more neighboring pixels as the context for improving the prediction performance. Read More

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November 2021

Tracking the National Early Warning Score 2 from prehospital care to the emergency department: A prospective, ambulance-based, observational study.

Prehosp Emerg Care 2021 Nov 30:1-13. Epub 2021 Nov 30.

Servicio de Urgencias, Hospital Universitario Rio Hortega de Valladolid, Gerencia Regional de Salud de Castilla y León (SACYL), Spain.

To assess the prognostic ability of the National Early Warning Score 2 (NEWS2) at three time points of care -at the emergency scene (NEWS2-1), just before starting the transfer by ambulance to the hospital (NEWS2- 2), and at the hospital triage box (NEWS2-3)- to estimate in-hospital mortality after two days since the index event. Prospective, multicenter, ambulance-based, cohort ongoing study in adults (>18 years) consecutively attended by advanced life support (ALS) and evacuated with high-priority to the emergency departments (ED) between October 2018 and May 2021. Vital sign measures were used to calculate the NEWS2 score at each time point, then this score was entered in a logistic regression model as the single predictor. Read More

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November 2021

Reimagining the Introductory Math Curriculum for Life Sciences Students.

CBE Life Sci Educ 2021 Dec;20(4):ar62

Department of Ecology & Evolutionary Biology, University of California Los Angeles, Los Angeles, CA 90095.

Calculus is typically one of the first college courses encountered by science, technology, engineering, and mathematics (STEM) majors. Calculus often presents major challenges affecting STEM student persistence, particularly for students from groups historically underrepresented in STEM. For life sciences majors, calculus courses may not offer content that is relevant to biological systems or connect with students' interests in biology. Read More

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December 2021

Triphenylamine-Based Conjugated Polyelectrolyte as a Hole Transport Layer for Efficient and Scalable Perovskite Solar Cells.

Small 2021 Nov 30:e2104933. Epub 2021 Nov 30.

Department of Chemistry, KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, 02841, Republic of Korea.

π-Conjugated polyelectrolytes (CPEs) have been studied as interlayers on top of a separate hole transport layer (HTL) to improve the wetting, interfacial defect passivation, and crystal growth of perovskites. However, very few CPE-based HTLs have been reported without rational molecular design as ideal HTLs for perovskite solar cells (PeSCs). In this study, the authors synthesize a triphenylamine-based anionic CPE (TPAFS-TMA) as an HTL for p-i-n-type PeSCs. Read More

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November 2021

The effect of perceptual processing fluency and value on metacognition and remembering.

Psychon Bull Rev 2021 Nov 30. Epub 2021 Nov 30.

Department of Psychology, University of California, Los Angeles, CA, 90095, USA.

Previous research has indicated that perceptual processing fluency significantly affects metacognitive predictions of performance but not learning outcomes. In the present study, we examined the differential impact of perceptual processing fluency and an item's value on metacognition and recall. We presented participants with words visually and audibly, with each word paired with a point value counting towards participants' scores if recalled. Read More

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November 2021

Quantitative analysis of dominant mechanisms in improving fluid sweeping uniformity in a layered heterogeneous system via xanthan gum addition.

Environ Sci Pollut Res Int 2021 Nov 30. Epub 2021 Nov 30.

Key Laboratory for Water and Sediment Sciences of Ministry of Education, School of Environment, Beijing Normal University, Beijing, 100875, People's Republic of China.

Although it has been proven that the addition of shear-thinning polymers can lead to an improvement in the sweeping efficiency of the remedial agent in heterogeneous aquifers, the related mechanisms require further investigation. This study revealed the mechanisms associated with the improvement of fluid sweeping uniformity. Under the assumption of no transverse flow existed between layers, the variation patterns of the fluid sweeping uniformity in strip layered heterogeneous media (R/R) with the change of the fluid hydraulic conductivity were investigated. Read More

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November 2021

Implication of energy expansion via the interaction of coal, industrialization, and agriculture towards climate goal: dual sustainability analysis.

Environ Sci Pollut Res Int 2021 Nov 30. Epub 2021 Nov 30.

Faculty of Economics Administrative and Social Sciences, Istanbul Gelisim University, Istanbul, Turkey.

This current study seeks to investigate the policy implication of Turkey's recent energy policies on its sustainable development. This study uses Turkey's country-specific data and series of 1974 to 2018 for effective investigation and justification of the findings of this study with emphasis on both short-run and long-run implications. Three models were fitted to achieve study objectives to accommodate both environmental sustainability and economic impacts. Read More

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November 2021

Deep Learning Image Processing Enables 40% Faster Spinal MR Scans Which Match or Exceed Quality of Standard of Care : A Prospective Multicenter Multireader Study.

Clin Neuroradiol 2021 Nov 30. Epub 2021 Nov 30.

RadNet-San Fernando Interventional Radiology, 1510 Cotner Ave., 90025, Los Angeles, CA, USA.

Objective: This prospective multicenter multireader study evaluated the performance of 40% scan-time reduced spinal magnetic resonance imaging (MRI) reconstructed with deep learning (DL).

Methods: A total of 61 patients underwent standard of care (SOC) and accelerated (FAST) spine MRI. DL was used to enhance the accelerated set (FAST-DL). Read More

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November 2021

Detection of wavelength in the range from ultraviolet to near infrared light using two parallel PtSe/thin Si Schottky junctions.

Mater Horiz 2021 Jul 28;8(7):1976-1984. Epub 2021 Apr 28.

School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei, 230009, China.

A wavelength sensor as a representative optoelectronic device plays an important role in many fields including visible light communication, medical diagnosis, and image recognition. In this study, a wavelength-sensitive detector with a new operation mechanism was reported. The as-proposed wavelength sensor which is composed of two parallel PtSe/thin Si Schottky junction photodetectors is capable of distinguishing wavelength in the range from ultraviolet to near infrared (UV-NIR) light (265 to 1050 nm), in that the relationship between the photocurrent ratio of both photodetectors and incident wavelength can be numerically described by a monotonic function. Read More

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Trust is good, control is better: a review on monitoring and characterization techniques for flow battery electrolytes.

Mater Horiz 2021 Jul 26;8(7):1866-1925. Epub 2021 Mar 26.

Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany.

Flow batteries (FBs) currently are one of the most promising large-scale energy storage technologies for energy grids with a large share of renewable electricity generation. Among the main technological challenges for the economic operation of a large-scale battery technology is its calendar lifetime, which ideally has to cover a few decades without significant loss of performance. This requirement can only be met if the key parameters representing the performance losses of the system are continuously monitored and optimized during the operation. Read More

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Metal- and halide-free, solid-state polymeric water vapor sorbents for efficient water-sorption-driven cooling and atmospheric water harvesting.

Mater Horiz 2021 May 10;8(5):1518-1527. Epub 2021 Mar 10.

Water Desalination and Reuse Center, Division of Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia.

Metal- and halide-free, solid-state water vapor sorbents are highly desirable for water-sorption-based applications, because most of the solid sorbents suffer from low water sorption capacity caused by their rigid porosity, while the liquid sorbents are limited by their fluidity and strong corrosivity, which is caused by the halide ions. Herein, we report a novel type of highly efficient and benign polymeric sorbent, which contains no metal or halide, and has an expandable solid state when wet. A group of sorbents are synthesized by polymerizing and crosslinking the metal-free quaternary ammonium monomers followed by an ion-exchange process to replace chloride anions with benign-anions, including acetate, oxalate, and citrate. Read More

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The University of Colorado Virtual Physical Examination for Spine Surgeons: A Preliminary Study.

Orthopedics 2021 Dec 2:1-4. Epub 2021 Dec 2.

As coronavirus disease 2019 (COVID-19) reached pandemic status, in-person orthopedic clinics across the United States were forced to close as many states adopted stay-at-home orders. Previously, the use of telemedicine in orthopedic practices was minimal for a variety of reasons, one being the inability to perform a physical examination in a specialty reliant on direct patient contact for diagnosis and treatment. A prospective cohort of 52 patients consented to participate in a novel virtual physical examination protocol during routine telemedicine visits at a large, tertiary orthopedic spine practice. Read More

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December 2021

Bio-inspired Track-Etched Polymeric Nanochannels: Steady-State Biosensors for Detection of Analytes.

ACS Nano 2021 Nov 30. Epub 2021 Nov 30.

Key Laboratory of Bio-inspired Materials and Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.

Bio-inspired polymeric nanochannel (also referred as nanopore)-based biosensors have attracted considerable attention on account of their controllable channel size and shape, multi-functional surface chemistry, unique ionic transport properties, and good robustness for applications. There are already very informative reviews on the latest developments in solid-state artificial nanochannel-based biosensors, however, which concentrated on the resistive-pulse sensing-based sensors for practical applications. The steady-state sensing-based nanochannel biosensors, in principle, have significant advantages over their counterparts in term of high sensitivity, fast response, target analytes with no size limit, and extensive suitable range. Read More

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November 2021

9,10-Phenanthrenequinone: A Promising Kernel to Develop Multifunctional Antitumor Systems for Efficient Type I Photodynamic and Photothermal Synergistic Therapy.

ACS Nano 2021 Nov 30. Epub 2021 Nov 30.

State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, South China University of Technology, Guangzhou 510640, China.

Synergistic phototherapy provides a promising strategy to conquer the hypoxia and heterogeneity of tumors and realize a better therapeutic effect than monomodal photodynamic therapy (PDT) or photothermal therapy (PTT). The development of efficient multifunctional organic phototheranostic systems still remains a challenging task. Herein, 9,10-phenanthrenequinone (PQ) with strong electron-withdrawing ability is conjugated with the rotor-type electron-donating triphenylamine derivatives to create a series of tailor-made photosensitizers. Read More

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November 2021

Thermally stable biopolymer composites based on poly(3-hydroxybutyrate) modified with linear aliphatic polyurethanes - preparation and properties.

Acta Bioeng Biomech 2021 ;23(2):91-105

Faculty of Chemical Engineering and Commodity Science, University of Technology and Humanities, Radom, Poland.

Purpose: Poly(3-hydroxybutyrate) (P3HB) is a biopolymer, but storing products from P3HB causes the deterioration of their properties leading to their brittleness. P3HB has also low thermal stability. Its melting point almost equals its degradation temperature. Read More

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January 2021

Relationship Between the Ratio of Acceleration Time/Ejection Time and Mortality in Patients With High-Gradient Severe Aortic Stenosis.

J Am Heart Assoc 2021 Nov 30:e021873. Epub 2021 Nov 30.

Cardiology Department Lille Catholic Hospitals Heart Valve Center Lille Catholic University Lille France.

Background The ratio of acceleration time/ejection time (AT/ET) is a simple and reproducible echocardiographic parameter that integrates aortic stenosis severity and its consequences on the left ventricle. No study has specifically assessed the prognostic impact of AT/ET on outcome in patients with high-gradient severe aortic stenosis (SAS) and no or mild symptoms. We sought to evaluate the relationship between AT/ET and mortality and determine the best predictive AT/ET cutoff value in these patients. Read More

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November 2021

Stability of biomaterials used in adjunct to coronally advanced flap: A systematic review and network meta-analysis.

Clin Exp Dent Res 2021 Nov 29. Epub 2021 Nov 29.

Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy.

Aim: The objective of this network meta-analysis was to rank different biomaterials used in adjunct to coronally advanced flap (CAF), based on their performance in root-coverage for Miller's Class I and II gingival recessions.

Materials And Methods: An electronic database search was carried out in PUBMED, CENTRAL, SCOPUS, and EMBASE to identify the eligible articles and compiled into the citation manager to remove the duplicates. The primary outcome was keratinized gingival tissue width (KGW) and percentage of root coverage (%RC). Read More

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November 2021

Machine learning-based prediction of invisible intraprostatic prostate cancer lesions on  Ga-PSMA-11 PET/CT in patients with primary prostate cancer.

Eur J Nucl Med Mol Imaging 2021 Nov 30. Epub 2021 Nov 30.

Department of Nuclear Medicine, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China.

Purpose:  Ga-PSMA PET/CT has high specificity and sensitivity for the detection of both intraprostatic tumor focal lesions and metastasis. However, approximately 10% of primary prostate cancer are invisible on PSMA-PET (exhibit no or minimal uptake). In this work, we investigated whether machine learning-based radiomics models derived from PSMA-PET images could predict invisible intraprostatic lesions on  Ga-PSMA-11 PET in patients with primary prostate cancer. Read More

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November 2021

Real-world data analysis of patients with cancer of unknown primary.

Sci Rep 2021 Nov 29;11(1):23074. Epub 2021 Nov 29.

Department of Medical Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea.

Cancer of unknown primary (CUP) is a heterogeneous malignancy in which the primary site of the tumor cannot be identified through standard work-up. The survival outcome of CUP is generally poor, and there is no consensus for treatment. Here, we comprehensively analyzed the real-world data of 218 patients with CUP (median age, 62 years [range, 19-91]; male, 62. Read More

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November 2021

Combining Transcranial Doppler and EEG Data to Predict Delayed Cerebral Ischemia After Subarachnoid Hemorrhage.

Neurology 2021 Nov 29. Epub 2021 Nov 29.

Department of Neurology, Yale University, New Haven, CT

Background And Objectives: Delayed cerebral ischemia (DCI) is the leading complication of subarachnoid hemorrhage (SAH). Because DCI was traditionally thought to be caused by large vessel vasospasm, transcranial Doppler ultrasounds (TCDs) have been the standard of care. Continuous EEG has emerged as a promising complementary monitoring modality and predicts increased DCI risk. Read More

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November 2021

Predicting multilingual effects on executive function and individual connectomes in children: An ABCD study.

Proc Natl Acad Sci U S A 2021 Dec;118(49)

Department of Psychology, Yale University, New Haven, CT 06520-8205;

While there is a substantial amount of work studying multilingualism's effect on cognitive functions, little is known about how the multilingual experience modulates the brain as a whole. In this study, we analyzed data of over 1,000 children from the Adolescent Brain Cognitive Development (ABCD) Study to examine whether monolinguals and multilinguals differ in executive function, functional brain connectivity, and brain-behavior associations. We observed significantly better performance from multilingual children than monolinguals in working-memory tasks. Read More

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December 2021