888 results match your criteria arm separation

Combined effect of microplastics and global warming factors on early growth and development of the sea urchin (Paracentrotus lividus).

Sci Total Environ 2021 Apr 1;782:146888. Epub 2021 Apr 1.

Centro Oceanográfico de Vigo, Instituto Español de Oceanografía, IEO, Subida a Radio Faro, 50, 36390 Vigo, Pontevedra, Spain.

The aim of this work was to estimate the potential risk of the combined effect of global change factors (acidification, temperature increase) and microplastic (MP) pollution on the growth and development of the sea urchin P. lividus. Embryo-larval bioassays were conducted to determine growth and morphology after 48 h of incubation with MP (1000 and 3000 particles/mL); with filtered sea water at pH = 7. Read More

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Facile synthesis and immobilization of functionalized covalent organic framework-1 for electrochromatographic separation.

J Chromatogr A 2021 Apr 1;1645:462130. Epub 2021 Apr 1.

School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, China. Electronic address:

Inspired by the outstanding functions of 3-aminopropyltriethoxysilane (APTES), which can be used for functionalization of both covalent organic frameworks (COFs) and substrate surfaces, herein, a proof-of-concept demonstration was carried out by one-step synthesis and immobilization of COF-1 in capillary. COF-1 was grown on the inner wall of capillary using APTES, which played a triple role of catalyst, stabilizer, and connecting arm during the process. The immobilization of COF-1 on silicon surface was confirmed by scanning electron microscopy. Read More

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Effects of Low-frequency Repetitive Transcranial Magnetic Stimulation on Focal Hand Dystonia: A Case Report.

Tokai J Exp Clin Med 2021 Apr 20;46(1):44-50. Epub 2021 Apr 20.

Department of Rehabilitation Medicine, Tokai University Hachioji Hospital, 1838 Ishikawa-machi, Hachioji, Tokyo 192-0032, Japan.

A 40-year-old female patient with no medical history or family history of dystonia showed no abnormalities on cranial MRI. However, flexions and extensions were poor during the right arm and elbow movements, and tremors were observed during the finger separation movement. The tremors reduced when the left hand was placed on the right shoulder. Read More

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Evaluation of the Effects of Developmental Trauma on Neurotransmitter Systems Using Functional Molecular Imaging.

Int J Mol Sci 2021 Mar 3;22(5). Epub 2021 Mar 3.

Division of Applied RI, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Korea.

Early life stress (ELS) is strongly associated with psychiatric disorders such as anxiety, depression, and schizophrenia in adulthood. To date, biological, behavioral, and structural aspects of ELS have been studied extensively, but their functional effects remain unclear. Here, we examined NeuroPET studies of dopaminergic, glutamatergic, and serotonergic systems in ELS animal models. Read More

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In vivo measurement of distance between scapular neck and polyethylene insert during active external rotation in shoulders with Grammont type reverse prosthesis.

Clin Biomech (Bristol, Avon) 2021 Mar 26;84:105341. Epub 2021 Mar 26.

Department of Mechanical & Aerospace Engineering, University of Florida, 330 MAE-A P.O. Box 116250, Gainesville, FL 32611-6250, USA.

Background: Scapular notching is a frequently observed complication after reverse shoulder arthroplasty. Impingement of the humeral plastic insert against the scapular neck is believed to be the cause of notching. There have been no in vivo studies that analyzed the positional relationship between the scapular neck and humeral insert. Read More

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Transcriptomic signature of early life stress in male rat prefrontal cortex.

Neurobiol Stress 2021 May 10;14:100316. Epub 2021 Mar 10.

School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, New South Wales, Australia.

Early life stress (ELS) is associated with adverse mental health outcomes including anxiety, depression and addiction-like behaviours. While ELS is known to affect the developing brain, leading to increased stress responsiveness and increased glucocorticoid levels, the molecular mechanisms underlying the detrimental effects of ELS remain incompletely characterised. Rodent models have been instrumental in beginning to uncover the molecular and cellular underpinnings of ELS. Read More

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measurements of glenohumeral distraction technique performed in three different joint positions.

J Man Manip Ther 2021 Mar 25:1-7. Epub 2021 Mar 25.

Rehabilitation and Human Movement Sciences Department, Faculty of Health Sciences, University of Antofagasta, Antofagasta, Chile.

: Distraction techniques are an important part of the manual approach in the glenohumeral joint; however, there is controversy regarding the initial joint position to maximize separation of joint surfaces.: To identify, through an exploration, the behavior of the coracohumeral distance (CHD) during the application of a short lever arm grade III distraction technique on the humeral head, executed in three different glenohumeral positions (zero position (P0), rest position (RP) and 90º abduction position with maximum external rotation (ABD+ER)).: 15 participants were selected. Read More

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Standard versus Accelerated Speaking Valve Placement after Percutaneous Tracheostomy: A Randomized-Controlled Feasibility Study.

Ann Am Thorac Soc 2021 Mar 24. Epub 2021 Mar 24.

Johns Hopkins University, 1466, Baltimore, Maryland, United States;

Rationale: Feasibility of a large, multi-center, randomized controlled trial (RCT) comparing the risks and benefits of early use speaking valve following tracheostomy is not clear.

Objective: To investigate the feasibility of accelerated (≤ 24 hours) versus standard (≥ 48 hours) one-way speaking valve ("speaking valve") placement after percutaneous tracheostomy.

Method: Twenty awake patients (Glasgow Coma Scale score >9) were randomized to accelerated or standard timing of speaking valve placement. Read More

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A new species of Diplotaxodon (Cichliformes: Cichlidae) from Lake Malaŵi.

Zootaxa 2021 Jan 7;4903(2):zootaxa.4903.2.7. Epub 2021 Jan 7.

Penn State University, 432 Forest Resources Building, University Park, Pennsylvania 16802, USA. Honorary Research Associate, South African Institute for Aquatic Biodiversity, Makhanda, RSA..

A species of haplochromine cichlid fish of the genus Diplotaxodon Trewavas, endemic to Lake Malaŵi is described: Diplotaxodon dentatus, new species. All eight type specimens were trawled together off Thumbi East Island in the Southeastern arm of the lake at 73 meters in 1985. They were initially identified as D. Read More

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January 2021

Four new species of Serranochromis (Teleostei: Cichlidae) from the Cuanza and Okavango river systems in Angola, including a preliminary key for the genus.

Zootaxa 2021 Jan 13;4908(1):zootaxa.4908.1.4. Epub 2021 Jan 13.

Penn State University, 432 Forest Resources Building, University Park, Pennsylvania 16802, USA., 2Honorary Research Associate, South African Institute for Aquatic Biodiversity, Makhanda, RSA. South African Institute for Aquatic Biodiversity, Private Bag 1015, Makhanda, 6140, RSA.

The present study describes Serranochromis alvum n. sp., Serranochromis swartzi n. Read More

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January 2021

Double-peak one-dimensional photonic crystal cavity in parallel configuration for temperature self-compensation in sensing.

Appl Opt 2021 Feb;60(6):1667-1673

We designed and demonstrated a double-peak one-dimensional photonic crystal (1D PhC) cavity device by integrating two 1D PhCs cavities in a parallel configuration. The device design is proposed so that it can be used for bio-sensing purposes and has a self-compensation ability to reduce the measurement error caused by the change of the surrounding temperature. By combining two light resonances, two resonance peaks are obtained. Read More

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February 2021

Toward Continuous-Flow Hyperpolarisation of Metabolites via Heterogenous Catalysis, Side-Arm-Hydrogenation, and Membrane Dissolution of Parahydrogen.

Chemphyschem 2021 Mar 10. Epub 2021 Mar 10.

University of Florida, Chemistry Department, PO Box 118440, New Physics Building, 32611-8440, Gainesville, UNITED STATES.

Side-arm hydrogenation (SAH) by homogeneous catalysis has extended the reach of the parahydrogen enhanced NMR technique to key metabolites such as pyruvate. However, homogeneous hydrogenation requires rapid separation of the dissolved catalyst and purification of the hyperpolarised species with a purity sufficient for safe in-vivo use. An alternate approach is to employ heterogeneous hydrogenation in a continuous-flow reactor, where separation from the solid catalysts is straightforward. Read More

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The Effect of Crank Resistance on Arm Configuration and Muscle Activation Variances in Arm Cycling Movements.

J Hum Kinet 2021 Jan 29;76:175-189. Epub 2021 Jan 29.

Department of Computational Sciences, Wigner Research Centre for Physics, Budapest, H-1121 Hungary.

Arm cycling on an ergometer is common in sports training and rehabilitation protocols. The hand movement is constrained along a circular path, and the user is working against a resistance, maintaining a cadence. Even if the desired hand trajectory is given, there is the flexibility to choose patterns of joint coordination and muscle activation, given the kinematic redundancy of the upper limb. Read More

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January 2021

Radioactive Source Localisation via Projective Linear Reconstruction.

Sensors (Basel) 2021 Jan 26;21(3). Epub 2021 Jan 26.

HH Wills Physics Laboratory, School of Physics, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, UK.

Radiation mapping, through the detection of ionising gamma-ray emissions, is an important technique used across the nuclear industry to characterise environments over a range of length scales. In complex scenarios, the precise localisation and activity of radiological sources becomes difficult to determine due to the inability to directly image gamma photon emissions. This is a result of the potentially unknown number of sources combined with uncertainties associated with the source-detector separation-causing an apparent 'blurring' of the as-detected radiation field relative to the true distribution. Read More

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January 2021

Complexation and Separation of Trivalent Actinides and Lanthanides by a Novel DGA Derived from Macrocyclic Crown Ether: Synthesis, Extraction, and Spectroscopic and Density Functional Theory Studies.

ACS Omega 2021 Jan 13;6(3):2156-2166. Epub 2021 Jan 13.

College of Chemistry, Sichuan University, Chengdu 610064, P. R. China.

A DGA-arm-grafted macrocyclic aza-crown ether ligand (Cr6DGA) was synthesized, and its solvent extraction behavior toward trivalent americium and europium in nitric acid medium was studied. The effects of various parameters such as the contact time, temperature, concentration of the extractant, and acidity on the extraction by Cr6DGA were investigated. It was found that in 3 mol/L HNO, the SF value was about 2. Read More

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January 2021

Long-length tomosynthesis and 3D-2D registration for intraoperative assessment of spine instrumentation.

Phys Med Biol 2021 Feb 17;66(5):055008. Epub 2021 Feb 17.

Department of Biomedical Engineering, Johns Hopkins University, Baltimore MD, United States of America.

Purpose: A system for long-length intraoperative imaging is reported based on longitudinal motion of an O-arm gantry featuring a multi-slot collimator. We assess the utility of long-length tomosynthesis and the geometric accuracy of 3D image registration for surgical guidance and evaluation of long spinal constructs.

Methods: A multi-slot collimator with tilted apertures was integrated into an O-arm system for long-length imaging. Read More

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February 2021

New insights on the removal of diclofenac and ibuprofen by CWPO using a magnetite-based catalyst in an up-flow fixed-bed reactor.

J Environ Manage 2021 Mar 5;281:111913. Epub 2021 Jan 5.

Catalysis and Separation Processes Group, Chemical Engineering and Materials Department, Faculty of Chemistry, Complutense University, Avda. Complutense s/n, 28040, Madrid, Spain.

This research has been focused on the removal of two anti-inflammatory drugs, diclofenac (DCF) and ibuprofen (IBU), by a continuous catalytic wet peroxide oxidation (CWPO) process using a lab-synthesized nanomagnetic catalyst (FeO/MWCNTs). The central composite rotatable design (CCRD) method was used to study the effect of DCF and IBU concentration (expressed as theoretical oxygen demand (ThOD) between 0 and 52.5 mg L) and of the feed stream pH (from 3 to 7) on the removal of total organic carbon (TOC) and the concentration of aromatic compounds (Arm) and total phenolic compounds (TP) by CWPO. Read More

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Simplicity in mean-field phase behavior of two-component miktoarm star copolymers.

Wei Li Yi-Xin Liu

J Chem Phys 2021 Jan;154(1):014903

Materials Research Laboratory, University of California, Santa Barbara, California 93106, USA.

Using self-consistent field theory, we systematically explore the microphase separation in the class of two-component miktoarm star copolymers containing a single conjunction point between different blocks by considering an extended list of candidate microphases. We plot mean-field phase diagrams in the plane of segregation strength and composition for an array of representative star copolymers. Three principal phase diagram topologies, dictated by different phase stabilities, are exposed, displaying a hierarchy in complexity by increasing the molecular asymmetry. Read More

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January 2021

Comparison of the Results of Hook Plate and Endo-Button Used in the Surgical Treatment of Acromioclavicular Joint Separation.

Cureus 2020 Dec 8;12(12):e11987. Epub 2020 Dec 8.

Department of Orthopedics and Traumatology, Maltepe University, Istanbul, TUR.

Purpose: Our study aimed to compare the clinical outcomes between endo-button and hook plate fixations for the treatment of acute unstable acromioclavicular (AC) joint dislocation.

Materials: A retrospective evaluation of patients with acute AC joint dislocation who were treated between February 2009 and December 2019 was performed. The study was conducted with 39 patients who met the inclusion criteria. Read More

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December 2020

The Influence of "Loss of Attachment" on the Outcome of Anterior Cervical Fusion Procedures in Patients With Hirayama Disease.

Orthopedics 2021 Jan 7;44(1):30-37. Epub 2020 Dec 7.

The objective of this study was to identify the influence of the measurements of "loss of attachment" on the surgical outcome in Hirayama disease (HD). Forty-two patients with HD underwent neutral and cervical-flexion magnetic resonance imaging (MRI) before surgery, and the cervical-flexion MRI was repeated at the 3-month postoperative visit. The longitudinal separation range (LSR) of loss of attachment, the maximum forward-shifting (MFS) degree in the cervical cord, and the relative morphological changes of the cervical cord were measured on MRI. Read More

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January 2021

Mild Physical Activity Does Not Improve Spatial Learning in a Virtual Environment.

Front Behav Neurosci 2020 17;14:584052. Epub 2020 Nov 17.

The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan, Israel.

It is well-established that physical exercise in humans improves cognitive functions, such as executive functions, pattern separation, and working memory. It is yet unknown, however, whether spatial learning, long known to be affected by exercise in rodents, is also affected in humans. In order to address this question, we recruited 20 healthy young male adults (18-30 years old) divided into exercise and control groups ( = 10 in each group). Read More

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November 2020

Individualized, Intraoperative Dosing of Fibrinogen Concentrate for the Prevention of Bleeding in Neonatal and Infant Cardiac Surgery Using Cardiopulmonary Bypass (FIBCON): A Phase 1b/2a Randomized Controlled Trial.

Circ Cardiovasc Interv 2020 Dec 20;13(12):e009465. Epub 2020 Nov 20.

Department of Paediatric Intensive Care, Evelina London Children's Hospital, United Kingdom (K.S., J.H., A.G.N., S.M.T.).

Background: Mediastinal bleeding is common following pediatric cardiopulmonary bypass surgery for congenital heart disease. Fibrinogen concentrate (FC) represents a potential therapy for preventing bleeding.

Methods: We performed a single-center, phase 1b/2a, randomized controlled trial on infants 2. Read More

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December 2020

Synthesis, Structure, Hydrodynamics and Thermoresponsiveness of Graft Copolymer with Aromatic Polyester Backbone at Poly(2-isopropyl-2-oxazoline) Side Chains.

Polymers (Basel) 2020 Nov 10;12(11). Epub 2020 Nov 10.

Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 Saint-Petersburg, Russia.

New thermoresponsive graft copolymers with an aromatic polyester backbone and poly(2-isopropyl-2-oxazoline) (PiPrOx) side chains are synthesized and characterized by NMR and GPC. The grafting density of side chains is 0.49. Read More

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November 2020

New System for the Classification of Epiphyseal Separation of the Coracoid Process: Evaluation of Nine Cases and Review of the Literature.

Adv Orthop 2020 23;2020:9749515. Epub 2020 Oct 23.

Department of Orthopaedics, Nara Medical University, 840 Shijyo, Kashihara, Nara 634-8521, Japan.

. Epiphyseal separation of the coracoid process (CP) rarely occurs in adolescents. In this retrospective case series, we reviewed the data of nine patients treated at our center and those of 28 patients reported in the literature. Read More

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October 2020

Impact of Covid-19 in pregnancy on mother's psychological status and infant's neurobehavioral development: a longitudinal cohort study in China.

BMC Med 2020 11 4;18(1):347. Epub 2020 Nov 4.

Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, 100191, China.

Background: Evidence concerning the long-term impact of Covid-19 in pregnancy on mother's psychological disorder and infant's developmental delay is unknown.

Methods: This study is a longitudinal single-arm cohort study conducted in China between May 1 and July 31, 2020. Seventy-two pregnant patients with Covid-19 participated in follow-up surveys until 3 months after giving birth (57 cases) or having abortion (15 cases). Read More

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November 2020

Combined Use of Rotational Thromboelastometry (Rotem) and Platelet Impedance Aggregometry (Multiplate Analyzer) in Cyanotic and Acyanotic Infants and Children Undergoing Cardiac Surgery With Cardiopulmonary Bypass: Subgroup Analysis of a Randomized Clinical Trial.

J Cardiothorac Vasc Anesth 2020 Oct 1. Epub 2020 Oct 1.

Department of Anesthesiology, Cliniques Universitaires Saint Luc, Université Catholique de Louvain, Brussels, Belgium. Electronic address:

Objectives: Few studies have investigated the Multiplate platelet function analyzer in pediatrics. The authors evaluated Multiplate combined with Rotem in terms of guiding platelet transfusion after pediatric cardiac surgery with cardiopulmonary bypass (CPB). The authors further compared coagulation parameters between cyanotic and acyanotic patients. Read More

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October 2020

"Orthogonal-Twisted-Arm" Ligands for The Construction of Metal-Organic Frameworks (MOFs): New Topology and Catalytic Reactivity.

Chemistry 2020 Dec 3;26(69):16272-16276. Epub 2020 Nov 3.

Department of Chemistry, University of South Florida, Tampa, FL, 33620, USA.

Extended tetratopic benzoic acid ligands with "orthogonal-twisted-arms" conformations were designed and synthesized for the construction of new MOF structures (OTA-MOF). Upon coordination with Cd and Cu cations, two well-defined new MOFs were prepared. X-ray single crystal structures were successfully obtained, demonstrating the formation of a new topology (4,4,4-c). Read More

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December 2020

Physical Fitness, Sex Considerations, and Academy Graduation for Law Enforcement Recruits.

J Strength Cond Res 2020 Dec;34(12):3356-3363

Department of Kinesiology, California State University, Fullerton, Fullerton, California.

Lockie, RG, Dawes, JJ, Dulla, JM, Orr, RM, and Hernandez, E. Physical fitness, sex considerations, and academy graduation for law enforcement recruits. J Strength Cond Res 34(12): 3356-3363, 2020-This study investigated the influence of fitness on academy graduation, and any between-sex differences, in law enforcement recruits. Read More

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December 2020

Interferometric diffuse correlation spectroscopy improves measurements at long source-detector separation and low photon count rate.

J Biomed Opt 2020 09;25(9)

Athinoula A. Martinos Ctr. for Biomedical Imaging, Massachusetts General Hospital, United States.

Significance: The use of diffuse correlation spectroscopy (DCS) has shown efficacy in research studies as a technique capable of noninvasively monitoring blood flow in tissue with applications in neuromonitoring, exercise science, and breast cancer management. The ability of DCS to resolve blood flow in these tissues is related to the optical sensitivity and signal-to-noise ratio (SNR) of the measurements, which in some cases, particularly adult cerebral blood flow measurements, is inadequate in a significant portion of the population. Improvements to DCS sensitivity and SNR could allow for greater clinical translation of this technique. Read More

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September 2020

Structural basis of the XPB helicase-Bax1 nuclease complex interacting with the repair bubble DNA.

Nucleic Acids Res 2020 11;48(20):11695-11705

Department of Biochemistry, University of California, Riverside, CA 92521, USA.

Nucleotide excision repair (NER) removes various DNA lesions caused by UV light and chemical carcinogens. The DNA helicase XPB plays a key role in DNA opening and coordinating damage incision by nucleases during NER, but the underlying mechanisms remain unclear. Here, we report crystal structures of XPB from Sulfurisphaera tokodaii (St) bound to the nuclease Bax1 and their complex with a bubble DNA having one arm unwound in the crystal. Read More

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November 2020