1,450,107 results match your criteria Labor & Delivery Perimortem Cesarean Delivery

Cancer-Associated Splanchnic Vein Thrombosis.

Semin Thromb Hemost 2021 Jun 11. Epub 2021 Jun 11.

Department of Medicine and Surgery, University of Insubria, Varese, Italy.

Splanchnic vein thrombosis (SVT), which includes portal, mesenteric, and splenic vein thrombosis and the Budd-Chiari syndrome, is an infrequent manifestation of venous thromboembolism (VTE). Like typical site VTE, SVT is also frequently associated with cancer, particularly intra-abdominal solid malignancies and myeloproliferative neoplasms (MPNs). The clinical presentation of SVT is nonspecific. Read More

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Use of a Transarticular Calcaneo-Tibial Locking Plate for Temporary Immobilization of the Tarsocrural Joint following Surgical Repair of Common Calcaneal Tendon Rupture in Eight Dogs.

Vet Comp Orthop Traumatol 2021 Jun 11. Epub 2021 Jun 11.

Dipartimento di Scienze Veterinarie, Università di Torino, Grugliasco (To), Italy.

Objective:  The purpose of this clinical communication is to report the management of common calcaneal tendon rupture in dogs using a transarticular calcaneo-tibial locking plate as a method of temporary immobilization of the tarsocrural joint to support primary repair of the common calcaneal tendon.

Study Design:  Dogs presented with partial or complete common calcaneal tendon rupture treated with primary tendon repair supported by the transarticular calcaneo-tibial locking plate technique from July 2016 to December 2019 were included. The tarsus was placed at a standing angle of 150 degrees and the pre-contoured Fixin locking 'L' or 'T' plate was medially applied with two locking screws inserted in the calcaneus and two screws inserted in the distal tibia. Read More

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Medicinal Plants for Insomnia Related to Anxiety: An Updated Review.

Planta Med 2021 Jun 11. Epub 2021 Jun 11.

Departament de Farmacologia, Facultat de Farmàcia, Universitat de València, Spain.

Sleep disorders are common among the general population and can generate health problems such as insomnia and anxiety. In addition to standard drugs and psychological interventions, there are different complementary plant-based therapies used to treat insomnia and anxiety. This review aimed to find and examine the most recent research on the use of herbal medicines for treating anxiety and insomnia as compiled from clinical trials, as well as to assess the safety and efficacy of these medicines and to elucidate their possible mechanisms of action. Read More

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Co-expression analysis identifies neuro-inflammation as a driver of sensory neuron aging in Aplysia californica.

N S Kron L A Fieber

PLoS One 2021 11;16(6):e0252647. Epub 2021 Jun 11.

Department of Marine Biology and Ecology, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, United States of America.

Aging of the nervous system is typified by depressed metabolism, compromised proteostasis, and increased inflammation that results in cognitive impairment. Differential expression analysis is a popular technique for exploring the molecular underpinnings of neural aging, but technical drawbacks of the methodology often obscure larger expression patterns. Co-expression analysis offers a robust alternative that allows for identification of networks of genes and their putative central regulators. Read More

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Inches, Centimeters, and Yards: Overlooked Definition Choices Inhibit Interpretation of Morphine Equivalence.

Clin J Pain 2021 Jun 11. Epub 2021 Jun 11.

Injury Prevention Research Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA Department of Health Outcomes & Biomedical Informatics, University of Florida College of Medicine, Gainesville, Florida, USA Institute for Pharmaceutical Outcomes & Policy, University of Kentucky College of Pharmacy, Lexington, Kentucky, USA Department of Pharmacy Practice and Science, University of Kentucky College of Pharmacy, Lexington, Kentucky, USA Division of Pharmaceutical Outcomes and Policy, University of North Carolina School of Pharmacy, Chapel Hill, North Carolina, USA Cecil G. Sheps Center for Health Services Research, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA UNC Hospitals Pain Management Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA Department of Anesthesiology, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA.

Objective: Morphine-standardized doses are used in clinical practice and research to account for molecular potency. 90 milligrams of morphine equivalents (MME) per day are considered a "high dose" risk threshold in guidelines, laws, and by payers. Although ubiquitously cited, the "CDC definition" of daily MME lacks a clearly defined denominator. Read More

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Cutting Edge: Novel Treatment Options Targeting Corneal Neovascularization to Improve High-Risk Corneal Graft Survival.

Cornea 2021 Jun 9. Epub 2021 Jun 9.

Department of Ophthalmology, University of Cologne, Faculty of Medicine, University Hospital Cologne, Cologne, Germany; and Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany.

Purpose: Corneal neovascularization is an important risk factor for graft rejection after keratoplasty, although its role in posterior lamellar keratoplasty is not yet well defined. The aim of this work was to describe clinically available approaches that target corneal neovascularization preoperatively to improve graft survival after subsequent penetrating keratoplasty (PK) and to present findings on Descemet membrane endothelial keratoplasty (DMEK) in eyes with neovascularization.

Methods: Recent work on the use of anti-vascular endothelial growth factor agents, fine needle diathermy (FND), and corneal collagen crosslinking (CXL) to regress corneal neovascularization before PK is summarized. Read More

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Multilevel Resistive Random Access Memory Achieved by MoO3/Hf/MoO3 Stack and its Application in Tunable High-Pass Filter.

Nanotechnology 2021 Jun 11. Epub 2021 Jun 11.

Xi'an Jiaotong University, No.8 Xian Ning West Road, Xi'an City, Xi'an, 710049, CHINA.

In this work, the multilevel resistive random access memories (RRAMs) have been achieved by using the structure of Pt/MoO3/Hf/MoO3/Pt with four stable resistance states. The devices show good retention property of each state (>104s) and large memory window (>104). The simulation and experimental study reveal that the resistive switching mechanism is ascribed to combination of the conductive filament in the stack of MoO3/Hf next to the top electrode and redox reaction at the interface of Hf/MoO3 next to bottom electrode. Read More

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NiCo alloy/C nanocomposites derived from a Ni-doped ZIF-67 for lightweight microwave absorbers.

Nanotechnology 2021 Jun 11. Epub 2021 Jun 11.

Shenzhen Technology University, No.3002, Lantian Road, Shenzhen, Guangdong, 518118, CHINA.

In this work, we prepared NiCo alloy/C with rhombic dodecahedron structure and superior microwave absorption performance by using ZIF-67 as the raw material. The rhombic dodecahedron NiCo alloy/C was with rough particles on the surface was photographed by field emission scanning electron microscopy (FESEM). By adjusting the doping amount of Ni and the temperature of pyrolysis, improved the impedance matching of NiCo alloy/C. Read More

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Renormalization group analysis of weakly interacting van der Waals Fermi system.

J Phys Condens Matter 2021 Jun 11. Epub 2021 Jun 11.

Department of Physics, Tezpur University (Central University), Napaam, Tezpur 784028, Tezpur, INDIA.

Weak-coupling phenomena of the two-dimensional Hubbard model is gaining momentum as a new interesting research field due to its extraordinarily rich behavior as a function of the carrier density and model parameters. Salmhofer [Commun. Math. Read More

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Circular dichroism enhancement and dynamically adjustment in planar metal chiral split rings with graphene sheets arrays.

Nanotechnology 2021 Jun 11. Epub 2021 Jun 11.

Xi'an University of Posts and Telecommunications, Xi'an University of Posts and Telecommunications, No. 618, West Chang'an Avenue, Xi'an, Shaanxi, 710121, CHINA.

Chiral plasmonic nanostructures have become a promising platform for polarization converters and molecular analysis. However, the circular dichroism (CD) of planar chiral plasmonic nanostructures is always weak and difficult for dynamic adjustment. In this work, graphene sheets (GSs) are introduced in planar metal chiral split rings (MCSRs) to enhance and dynamically adjust their CD effect. Read More

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COVID-19 pandemic in Africa: Is it time for water, sanitation and hygiene to climb up the ladder of global priorities?

Sci Total Environ 2021 Jun 3;791:148252. Epub 2021 Jun 3.

Universidad de Granada, Campus de Cartuja, s/n, 18071 Granada, Spain.

In the current pandemic context, it is necessary to remember the lessons learned from previous outbreaks in Africa, where the incidence of other diseases could rise if most resources are directed to tackle the emergency. Improving the access to water, sanitation and hygiene (WASH) could be a win-win strategy, because the lack of these services not only hampers the implementation of preventive measures against SARS-CoV-2 (e.g. Read More

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Liberation of insoluble-bound phenolics from lentil hull matrices as affected by Rhizopus oryzae fermentation: Alteration in phenolic profiles and their inhibitory capacities against low-density lipoprotein (LDL) and DNA oxidation.

Food Chem 2021 Jun 3;363:130275. Epub 2021 Jun 3.

Department of Biochemistry, Memorial University of Newfoundland, St. John's, NL A1B 3X9, Canada. Electronic address:

Fermentation is an effective non-thermal food processing operation used for enhancing the nutritional and functional properties of food. HPLC-ESI-MS/MS analysis and inhibitory capacity of the soluble- and insoluble-bound phenolics in lentil hulls in retarding the oxidation of LDL and DNA strand scission were determined following fermentation. In HPLC-ESI-MS/MS analysis, most insoluble-bound phenolics in lentil hulls were significantly decreased, indicating their liberation from the cell wall matrix upon fermentation. Read More

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Controlled assembly of nitrogen-doped iron carbide nanoparticles on reduced graphene oxide for electrochemical reduction of carbon dioxide to syngas.

J Colloid Interface Sci 2021 May 29;601:877-885. Epub 2021 May 29.

College of Chemistry and Environmental Science, Inner Mongolia Key Laboratory of Green Catalysis and Inner Mongolia Collaborative Innovation Center for Water Environment Safety, Inner Mongolia Normal University, Hohhot 010022, China. Electronic address:

The electrocatalytic CO reduction reaction (CORR) decreases the amount of greenhouse gas in the atmosphere while enabling a closed carbon cycle. Herein, iron oleate was used as a precursor to produce oleic acid-coated triiron tetraoxide nanoparticles ([email protected] NPs) by pyrolysis, which was then assembled with reduced graphene oxide (rGO) and doped with dicyandiamide as a nitrogen source to obtain nitrogen-doped iron carbide nanoparticles assembled on rGO (N-FeC/rGO NPs). The catalyst prepared by nitrogen doping at 800 °C with an [email protected] NPs to rGO weight ratio of 20:1 showed good activity and stability for the CORR. Read More

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Upgrading of pine tannin biochars as electrochemical capacitor electrodes.

J Colloid Interface Sci 2021 May 31;601:863-876. Epub 2021 May 31.

Université de Lorraine, CNRS, IJL, Epinal F-88000, France. Electronic address:

Biochar derived from the pyrolysis of pine tannin is a green and available by-product of oil manufacturing that presents interesting features after having been activated by KOH at 650 °C. Different weight ratios of KOH to biochar were used and the resulting activated carbons (ACs) presented highly developed specific surface areas of up to 2190 m g, well-connected porosity and high oxygen content, leading to enhanced electrochemical performance when used as electrochemical capacitor electrodes in a 1 M HSO aqueous electrolyte. Galvanostatic charge/discharge experiments evidenced that the best material achieved a maximum electrode capacitance of up to 232 F g (at 0. Read More

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Enhanced electrochemical properties of Ni-rich layered cathode materials via Mg and Tico-doping for lithium-ion batteries.

J Colloid Interface Sci 2021 May 29;601:853-862. Epub 2021 May 29.

College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, PR China. Electronic address:

To optimize the electrochemical performance of Ni-rich cathode materials, the 0.005 mol of Mg and 0.005 mol of Tico-doping LiNiCoMnO composite powders, labeled as NCM-11, are successfully prepared by being calcinated at 750 °C for 15 h following by an appropriate post-treatment, which are confirmed by XRD, EDS and XPS. Read More

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Improved oxygen activation over metal-organic-frameworks derived and zinc-modulated [email protected] catalyst for boosting indoor gaseous formaldehyde oxidation at room temperature.

J Colloid Interface Sci 2021 May 30;601:833-842. Epub 2021 May 30.

College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China; Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Chengdu 610065, China. Electronic address:

The indoor low-concentration formaldehyde (HCHO) removal in cobalt-based catalysts is still a "hot potato". In this work, metal-organic-frameworks (MOF)-derived and Zinc (Zn)-modulated new cobalt nanoparticles catalyst ([email protected]) was designed and prepared. The [email protected] performed outstanding elimination activities for ~1 ppm HCHO at 25 °C. Read More

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Fluorescent polymeric nanoparticle for ratiometric temperature sensing allows real-time monitoring in influenza virus-infected cells.

J Colloid Interface Sci 2021 Jun 1;601:825-832. Epub 2021 Jun 1.

Department of Bioengineering, School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan. Electronic address:

Temperature is a key indicator of infection and disease, however, it is difficult to measure at a cellular level. Nanoparticles are applied to measure the cellular temperature, and enhancement of the stability and reliability of the signal and higher biocompatibility are demanded. We have developed fluorescent polymeric nanoparticles loaded with temperature-sensitive units (as rhodamine B) and internal reference units (as coumarin) for imaging and ratiometric sensing of the cellular temperature in the physiological range. Read More

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Classification of visuomotor tasks based on electroencephalographic data depends on age-related differences in brain activity patterns.

Neural Netw 2021 May 13;142:363-374. Epub 2021 May 13.

Institute of Sports Medicine, Paderborn University, Paderborn, Germany; Division of Epilepsy and Clinical Neurophysiology, Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA. Electronic address:

Classification of physiological data provides a data driven approach to study central aspects of motor control, which changes with age. To implement such results in real-life applications for elderly it is important to identify age-specific characteristics of movement classification. We compared task-classification based on EEG derived activity patterns related to brain network characteristics between older and younger adults performing force tracking with two task characteristics (sinusoidal; constant) with the right or left hand. Read More

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Capturing the grouping and compactness of high-level semantic feature for saliency detection.

Neural Netw 2021 Apr 24;142:351-362. Epub 2021 Apr 24.

School of Physics Electronic Engineering, Nanyang Normal University, Nanyang 473061, China.

Saliency detection is an important and challenging research topic due to the variety and complexity of the background and saliency regions. In this paper, we present a novel unsupervised saliency detection approach by exploiting the grouping and compactness characteristics of the high-level semantic features. First, for the high-level semantic feature, the elastic net based hypergraph model is adopted to discover the group structure relationships of salient regional points, and the calculation of the spatial distribution is constructed to detect the compactness of the saliency regions. Read More

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Professional legislation knowledge of dentists and psychological effects of negligence.

J Forensic Leg Med 2021 Jun 8;81:102199. Epub 2021 Jun 8.

Student Research Committee, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran.

Introduction: The aim of the present study was to evaluate the extent to which a group of general dentists and specialists had knowledge of the professional laws and psychological effects of negligence on them.

Materials And Methods: The sample in this cross-sectional study consisted of 400 dentists (General dentists and specialists) in Isfahan city, Iran. Having designed the questionnaire and confirmed its validity and reliability, we published online to be completed by the dentists. Read More

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Radiographic severity, extent and pattern of cartilage loss are not associated with patient reported outcomes before or after total knee arthroplasty in end-stage knee osteoarthritis.

Knee 2021 Jun 8;31:54-63. Epub 2021 Jun 8.

Edinburgh Orthopaedics, Royal Infirmary of Edinburgh, 51 Little France Crescent, Old Dalkeith Road, Edinburgh EH16 4SA, United Kingdom.

Background: The aim of this study was to determine if radiographic severity, extent or pattern of knee osteoarthritis was associated with pain and function before total knee arthroplasty (TKA) or improvement therein one year after TKA.

Methods: A prospective study of 259 patients undergoing unilateral TKA for Kellgren-Lawrence (KL) grade ≥ 3 knee osteoarthritis was conducted: mean age 69.8 ± 9. Read More

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Comparison between hydroxyapatite/soapstone and hydroxyapatite/reduced graphene oxide composite coatings: Synthesis and property improvement.

J Mech Behav Biomed Mater 2021 Jun 8;121:104618. Epub 2021 Jun 8.

Departamento de Física, Universidade Federal de Ouro Preto, Campus Universitário Morro Do Cruzeiro ICEB/DEFIS, 35400-000, Ouro Preto, Minas Gerais, Brazil. Electronic address:

Economic viability and eco-friendliness are important characteristics that make implants available to the population in a sustainable way. In this work, we evaluate the performance of a low-cost, widely available, and eco-friendly material (talc from soapstone) relative to reduced graphene oxide as reinforcement to brittle hydroxyapatite coatings. We employ a low-cost and straightforward technique, electrodeposition, to deposit the composite coatings on the titanium substrate. Read More

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Interactions of copper and copper chelate compounds with the amyloid beta peptide: An investigation into electrochemistry, reactive oxygen species and peptide aggregation.

J Inorg Biochem 2021 May 29;222:111493. Epub 2021 May 29.

Department of Chemistry, Lewis University, One University Pkwy, Romeoville, IL 60455, United States. Electronic address:

Alzheimer's disease is a fatal neurological disorder affecting millions of people worldwide with an increasing patient population as average life expectancy increases. Accumulation of amyloid beta (Aβ) plaques is characteristic of the disease and has been the target of numerous failed clinical trials. In light of this, therapeutics that target mechanisms of neuronal death beyond Aβ aggregation are needed. Read More

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Measuring and modeling the motor system with machine learning.

Curr Opin Neurobiol 2021 Jun 8;70:11-23. Epub 2021 Jun 8.

EPFL, Swiss Federal Institute of Technology, Lausanne, Switzerland. Electronic address:

The utility of machine learning in understanding the motor system is promising a revolution in how to collect, measure, and analyze data. The field of movement science already elegantly incorporates theory and engineering principles to guide experimental work, and in this review we discuss the growing use of machine learning: from pose estimation, kinematic analyses, dimensionality reduction, and closed-loop feedback, to its use in understanding neural correlates and untangling sensorimotor systems. We also give our perspective on new avenues, where markerless motion capture combined with biomechanical modeling and neural networks could be a new platform for hypothesis-driven research. Read More

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A highly selective and sensitive Zn fluorescent sensor based on zinc finger-like peptide and its application in cell imaging.

Spectrochim Acta A Mol Biomol Spectrosc 2021 Jun 2;261:120042. Epub 2021 Jun 2.

School of Chemistry and Chemical Engineering, University of South China, Hengyang, China. Electronic address:

Developing new chemosensors for detection of Zn has attracted great attentions because of the important roles of Zn in biological systems, and it will produce toxic effects with an excessive intake of zinc ion. Metalloproteins are often used as an effective template for the design and development of peptide-based fluorescent sensors. In this study, we designed a new and simple ratiometric fluorescent sensor for Zn, which was based on a zinc finger-like peptide and labeled with a dansyl group, i. Read More

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Fabrication and measurement of fiber optic localized surface plasmon resonance sensor based on gold nanoparticle dimer.

Spectrochim Acta A Mol Biomol Spectrosc 2021 May 29;261:120034. Epub 2021 May 29.

Department of Electronics and Electrical Engineering, Dankook University, Yongin 16890, South Korea. Electronic address:

Fiber optic localized surface plasmon resonance (FO LSPR) sensors capable of portable, real-time, and remote sensing are emerging with the progress of lab-on-fiber technology. However, the small area of the substrate by the optical fiber often restricts the sensitivity of the FO LSPR sensors. To improve the performance of the FO LSPR sensors, it is necessary to enhance the interactions between incident light and plasmonic nanostructures within a defined region. Read More

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Density functional study of trans,trans,trans-[Pt(N)(OH)(Py)] on molecular structure and vibrational spectroscopy.

Spectrochim Acta A Mol Biomol Spectrosc 2021 Jun 2;261:120022. Epub 2021 Jun 2.

School of Life Science, Ludong University, Yantai, Shandong 264025, China. Electronic address:

This study records the selection of the best combination of geometric optimization and frequency calculation methods of the trans,trans,trans-[Pt(N)(OH)(py)](FM-190) by using different density functional calculation methods and basis sets. The results show that the CAM-B3LYP/SDD method has the best fit to the experimental data for geometric optimization, while the LSDA/SDD method has better performance in frequency calculation, and the infrared vibration peak is assigned. In addition, the calculated HOMO and LUMO show the energy gap and the internal charge transfer of this complex. Read More

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A novel 1,8-naphthalimide-based Cu ion fluorescent probe and its bioimaging application.

Spectrochim Acta A Mol Biomol Spectrosc 2021 Jun 1;261:120037. Epub 2021 Jun 1.

School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, People's Republic of China. Electronic address:

A new 1,8-naphthalimide-based Schiff base compound, named as (Z)-2-butyl-6-(((2-hydroxyphenyl)imino)methyl)-1H-benzo[de]isoquinoline-1,3(2H)-dione (BHBD), has been simply synthesized with high yields. BHBD can be employed as a "turn-on" fluorescent probe for Cu ion with high sensitivity, high selectivity and relatively low detection limit (0.48 × 10 M). Read More

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Identification and composition of carbonate minerals of the calcite structure by Raman and infrared spectroscopies using portable devices.

Spectrochim Acta A Mol Biomol Spectrosc 2021 May 26;261:119980. Epub 2021 May 26.

GeoRessources Laboratory -Université de Lorraine, Faculté des Sciences et Technologies, BP 70239, F-54506 Vandœuvre-lès-Nancy, France.

A portable Raman device with a 532 nm excitation laser and a portable infrared spectrometer with ATR (Attenuated Total Reflection) mode were used to analyse the spectral features associated with the identification and compositional variation of Ca-Mg-Fe-Mn natural carbonate minerals with a calcite structure (calcite, ankerite, dolomite, siderite, rhodochrosite, and magnesite). A systematic study of the variations of the peak positions with various compositional ratios was carried out. Most of the band positions were shifted to lower wavenumbers with increasing ionic radius or atomic mass of the divalent cations but the band of the translational lattice (T) mode in Raman and the symmetric bending (ν) band in the mid-infrared were the most sensitive. Read More

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FTIR spectroscopy with machine learning: A new approach to animal DNA polymorphism screening.

Spectrochim Acta A Mol Biomol Spectrosc 2021 Jun 1;261:120036. Epub 2021 Jun 1.

Faculdade de Medicina Veterinária e Zootecnia, Universidade Federal de Mato Grosso do Sul, 79070-900 Campo Grande, MS, Brazil. Electronic address:

Technological advances in recent decades, especially in molecular genetics, have enabled the detection of genetic DNA markers associated with productive characteristics in animals. However, the prospection of polymorphisms based on DNA sequencing is still expensive for the reality of many food-producing regions around the world, such as Brazil, demanding more accessible prospecting methods. In the present study, the Fourier transform infrared spectroscopy (FTIR) and machine learning algorithms were used to identify single nucleotide polymorphism (SNP) in animal DNA. Read More

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