157,754 results match your criteria attempt


Plasmodium vivax epidemiology in Ethiopia 2000-2020: A systematic review and meta-analysis.

PLoS Negl Trop Dis 2021 Sep 15;15(9):e0009781. Epub 2021 Sep 15.

ISGlobal, Institute for Global Health, Hospital Clinic-Universitat de Barcelona, Barcelona, Spain.

Background: Ethiopia is one of the scarce rare African countries where Plasmodium vivax and P. falciparum co-exist. There has been no attempt to derive a robust prevalence estimate of P. Read More

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September 2021

Decoupling Radiative and Auger Processes in Semiconductor Nanocrystals by Shape Engineering.

J Phys Chem Lett 2021 Sep 15:9155-9161. Epub 2021 Sep 15.

Pollard Institute, School of Electronic and Electrical Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom.

One of the most challenging aspects of semiconductor nanotechnology is the presence of extremely efficient nonradiative decay pathways (known as Auger processes) that hinder any attempt at creating population inversion and obtaining gain in nanocrystals. What is even more frustrating is that, in most cases, the strategies adopted to slow down Auger in these nanostructures also lead to a comparable increase in the radiative recombination times, so that there is no overall improvement from the point of view of their applicability as emissive media. Here we present a comprehensive theoretical characterization of CdTe tetrapods and show that in these versatile nanostructures it is possible to achieve a complete decoupling between radiative and Auger processes, where the latter can be strongly suppressed compared to spherical structures, by careful shape engineering, without affecting the efficiency of radiative recombination. Read More

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September 2021

Paramedic and EMT Program Performance on Certification Examinations Varies by Program Size and Geographic Location.

Prehosp Emerg Care 2021 Sep 15:1-10. Epub 2021 Sep 15.

The Ohio State University Wexner Medical Center, Department of Emergency Medicine, Columbus, Ohio.

: The quality of an Emergency Medical Technician (EMT) or paramedic training program is likely one factor which contributes to a candidate's success on the National Registry Cognitive Examination. However, program pass rates and their associated geographic location have not previously been evaluated. Our objective was to evaluate the performance of EMT and paramedic programs in the US, pass rates on the National Registry Cognitive Examinations, and relationship to geography. Read More

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September 2021

Self-Immolative Dye-Doped Polymeric Probe for Precisely Imaging Hydroxyl Radicals by Avoiding Leakage.

Anal Chem 2021 Sep 15. Epub 2021 Sep 15.

Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha 410114, P. R. China.

For sensing low abundance of biomarkers, utilizing nanocarriers to load dyes is an efficient method to amplify the detected signal. However, the non-specific leak of the internal dyes in this approach is accompanied by false positive signals, resulting in inaccurate signal acquirement. To address this issue, in this work, we reported a novel signal amplification strategy with dye as a scaffold to construct a self-immolative dye-doped polymeric probe (SDPP). Read More

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September 2021

Peptide-Based Electrochemiluminescence Biosensors Using Silver Nanoclusters as Signal Probes and Pd-CuO Hybrid Nanoconcaves as Coreactant Promoters for Immunoassays.

Anal Chem 2021 Sep 15. Epub 2021 Sep 15.

Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection, Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, Shandong, China.

Metal nanoclusters (NCs) possess high light stability and biocompatibility because of their unique quantum size effect, which has gradually become a new type of electrochemiluminescence (ECL) nanomaterial for immunoassays. However, the luminescence efficiency of metal NCs is too low to meet the needs of trace analysis, which limits its application. Herein, Ag NCs served as signal probes and Pd-CuO hybrid nanoconcaves served as coreaction promoters, developing a highly efficient peptide-based biosensor for neuron-specific enolase (NSE) detection. Read More

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September 2021

Valorization of carbon dioxide and waste (Derived from the site of Eutrophication) into syngas using a catalytic thermo-chemical platform.

Bioresour Technol 2021 Sep 8;341:125858. Epub 2021 Sep 8.

Department of Environment and Energy, Sejong University, Seoul 05006, Republic of Korea. Electronic address:

Global warming increases a chance of eutrophication, and such fact offers that unhygienic organic waste materials (OWMs) in water must be treated. Hence, this study laid emphasis on the thermal-chemical (pyrolysis) process to establish a rapid valorization platform for OWMs. Indeed, OWMs were collected from the eutrophication site, and OWMs were mainly comprised of lignocellulosic biomass, microalgae (cyanobacteria) and the diverse types of bacteria (commonly observed from livestock waste). Read More

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September 2021

Montmorillonite facilitated Pb(II) biomineralization by Chlorella sorokiniana FK in soil.

J Hazard Mater 2021 Aug 27;423(Pt A):127007. Epub 2021 Aug 27.

Laboratorio de Investigaciones Microbiológicas de Lagunas Andinas (LIMLA), PROIMI Planta Piloto de Procesos Industriales Microbiológicos, Av. Belgrano y Pasaje Caseros, 4000 CONICET Consejo Nacional de Investigaciones Científicas y Técnicas, 4000 Tucumán, Argentina.

In this study, Chlorella sorokiniana FK, isolated from lead-zinc tailings, was employed for Pb(II) biomineralization with or without montmorillonite (MMT) addition in soil. Batch experiment results showed that montmorillonite facilitated Pb(CO)(OH) formation on the surface of Chlorella-MMT composite, thus increasing algal cells' tolerance to Pb(II) poisoning. Surprisingly, Pb(II) adsorbed and biomineralized by Chlorella-MMT composite was 2. Read More

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Predictive catalysis in olefin metathesis with Ru-based catalysts with annulated C60 fullerenes in the N-heterocyclic carbenes.

Chemistry 2021 Sep 15. Epub 2021 Sep 15.

Universitat de Girona, Chemistry Department, Campus de Montilivi sn, 17071, Girona, SPAIN.

Predictive catalysis must be the tool that does not replace experiments, but acts as a selective agent, so that synthetic strategies of maximum profitability are used in the laboratory in a surgical way. Here, nanotechnology has been mixed with olefin metathesis from homogeneous Ru-NHC catalysts, specifically annulating a C 60 fullerene to the NHC ligand. Based on results with the C 60 in the backbone, a sterile change with respect to the catalysis of the metal center, an attempt has been made to bring C 60 closer to the metal, by attaching it to one of the two C-N bonds of the imidazole group of the SIMes (1,3-bis(2,4,6-trimethylphenyl)imidazolin-2-ylidene) ligand (reference NHC ligand of the 2 nd generation Grubbs catalysts) to increase the steric pressure of C 60 in the first sphere of reactivity of the metal. Read More

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September 2021

Safety of Thermosensor Insertion in the Midline of the Spinal Canal Anterior to the Dura: A Cadaveric Study.

Cardiovasc Intervent Radiol 2021 Sep 14. Epub 2021 Sep 14.

Department of Interventional Radiology, Nouvel Hôpital Civil, 1, place de l'Hôpital, 67096, Strasbourg Cedex, France.

Objective: To evaluate the safety of the insertion of a blunt-tip thermosensor inside the anterior epidural space using the trans-osseous route in the dorsal spine and the double oblique trans-foraminal approach in the lumbar spine.

Materials And Methods: A total of 10 attempts were made on a 91 years old human specimen. Thermosensors were inserted under fluoroscopic guidance in the anterior part of the spinal canal using various oblique angulations. Read More

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September 2021

Review of diffusion-weighted imaging and dynamic contrast-enhanced MRI for multiple myeloma and its precursors (monoclonal gammopathy of undetermined significance and smouldering myeloma).

Skeletal Radiol 2021 Sep 14. Epub 2021 Sep 14.

Department of Radiology and Medical Imaging, Ghent University Hospital and Ghent University, Ghent, Belgium.

The last decades, increasing research has been conducted on dynamic contrast-enhanced and diffusion-weighted MRI techniques in multiple myeloma and its precursors. Apart from anatomical sequences which are prone to interpretation errors due to anatomical variants, other pathologies and subjective evaluation of signal intensities, dynamic contrast-enhanced and diffusion-weighted MRI provide additional information on microenvironmental changes in bone marrow and are helpful in the diagnosis, staging and follow-up of plasma cell dyscrasias. Diffusion-weighted imaging provides information on diffusion (restriction) of water molecules in bone marrow and in malignant infiltration. Read More

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September 2021

The Feasibility of Ultrasound-Guided Knee Arthrocentesis Training Using Formalin-Embalmed.

JB JS Open Access 2021 Jul-Sep;6(3). Epub 2021 Sep 9.

Rocky Vista University College of Osteopathic Medicine-Southern Utah Campus, Ivins, Utah.

Background: The use of ultrasound guidance during knee arthrocentesis has proven to increase operator confidence and accuracy, particularly in novice healthcare providers. Realistic and practical means of teaching this procedure to medical trainees are needed. This study is intended to assess the feasibility and efficacy of using formalin-embalmed human cadavers in the instruction of ultrasound-guided knee arthrocentesis to medical trainees. Read More

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September 2021

The role of individual behavioral traits on fishway passage attempt behavior.

Ecol Evol 2021 Sep 1;11(17):11974-11990. Epub 2021 Aug 1.

Department of Biosciences Durham University Durham UK.

Variations in behavioral traits are widely recognized to drive animal behaviors exhibited within a population. However, information on how behavior traits influence behavior in anthropogenically modified habitats is lacking. Many habitats have become highly fragmented as a result of human processes. Read More

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September 2021

Active maintenance of proton motive force mediates starvation-induced bacterial antibiotic tolerance in Escherichia coli.

Commun Biol 2021 Sep 14;4(1):1068. Epub 2021 Sep 14.

Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong.

Recent evidence suggests that metabolic shutdown alone does not fully explain how bacteria exhibit phenotypic antibiotic tolerance. In an attempt to investigate the range of starvation-induced physiological responses underlying tolerance development, we found that active maintenance of the transmembrane proton motive force (PMF) is essential for prolonged expression of antibiotic tolerance in bacteria. Eradication of tolerant sub-population could be achieved by disruption of PMF using the ionophore CCCP, or through suppression of PMF maintenance mechanisms by simultaneous inhibition of the phage shock protein (Psp) response and electron transport chain (ETC) complex activities. Read More

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September 2021

Protein status of people with phenylketonuria: a scoping review protocol.

BMJ Open 2021 Sep 14;11(9):e049883. Epub 2021 Sep 14.

Department of Nutritional Sciences, King's College London, London, UK

Introduction: Phenylketonuria (PKU) is a disorder of protein metabolism resulting in an accumulation of phenylalanine in the body. Dietary management consists of altering the sources of ingested protein to limit phenylalanine intake. Current dietary protein guidelines for PKU are based on limited scientific evidence, thus it remains unclear whether current practice leads to optimal protein status in people with PKU. Read More

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September 2021

Holding pharmacy educators accountable in the wake of the anti-racism movement: A call to action.

Curr Pharm Teach Learn 2021 Oct 24;13(10):1261-1264. Epub 2021 Jul 24.

Howard University, College of Pharmacy, 2400 Sixth Street NW, Washington, DC 20059, United States. Electronic address:

Introduction: The recent murders of Black Americans has forced our society to reevaluate how the various systems in our nation view race and to attempt to dismantle and rebuild the structures that reinforce and perpetuate racial group inequity.

Perspective: Cultural awareness education has been broadly integrated into pharmacy curricula across the country to comply with accreditation standards. Health disparities are currently addressed in the context of race and ethnicity but lack the connection to racism. Read More

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October 2021

Dynamic capacity allocation in a radiology service considering different types of patients, individual no-show probabilities, and overbooking.

BMC Health Serv Res 2021 Sep 14;21(1):968. Epub 2021 Sep 14.

Mathematics Department, Universidade Federal de Mato Grosso, Cuiabá, Brazil.

Background: We propose a mathematical model formulated as a finite-horizon Markov Decision Process (MDP) to allocate capacity in a radiology department that serves different types of patients. To the best of our knowledge, this is the first attempt at considering radiology resources with different capacities and individual no-show probabilities of ambulatory patients in an MDP model. To mitigate the negative impacts of no-show, overbooking rules are also investigated. Read More

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September 2021

Methyl linked pyrazoles: Synthetic and Medicinal Perspective.

Mini Rev Med Chem 2021 Sep 14. Epub 2021 Sep 14.

Department of Chemistry, Central University of Haryana, Mahendergarh 123031, Haryana. India.

Pyrazoles, an important and well known class of the azole family, have been found to show a large number of applications in various fields specially of medicinal chemistry. Among pyrazole derivatives, particularly, methyl substituted pyrazoles have been reported as the potent medicinal scaffolds that exhibit a wide spectrum of biological activities. The present review is an attempt to highlight the detailed synthetic approaches for methyl substituted pyrazoles along with in depth analysis of their respective medical significances till March2021. Read More

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September 2021

Secundum Atrial Septal Defect Closure via the Transhepatic Approach in a Patient With Situs Ambiguus and a Left-Sided Inferior Vena Cava.

J Investig Med High Impact Case Rep 2021 Jan-Dec;9:23247096211045255

Creighton University, Phoenix, AZ, USA.

Secundum atrial septal defect (ASD) is the most common type of ASD. Symptoms including dyspnea on exertion usually manifest in the third and fourth decade of life. The transcatheter closure is the treatment of choice for secundum ASD. Read More

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September 2021

Second Attempt of Guided Tissue Regeneration on a Previous Successfully Grafted Site with Periodontal Breakdown-A 5-Year Follow-up.

Authors:
Lean Heong Foo

Eur J Dent 2021 Sep 14. Epub 2021 Sep 14.

Periodontic Unit, Department of Restorative Dentistry, National Dental Centre Singapore, Singapore.

Guided tissue regeneration (GTR) has been proven to promote attachment and regeneration of periodontal tissue. However, there is a 20 to 40% incidence of attachment loss on regenerated attachments reported in the literature. To my knowledge, this is the first case report on a second attempt in GTR on a previous successful grafted site with clinical attachment loss. Read More

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September 2021

Myostatin/Activin Receptor Ligands In Muscle And The Development Status Of Attenuating Drugs.

Endocr Rev 2021 Sep 14. Epub 2021 Sep 14.

Department of Orthopedics and Center for Biomedical Engineering and Technology (BioMET), University of Maryland School of Medicine, Baltimore, MD.

Muscle wasting disease indications are among the most debilitating and often deadly noncommunicable disease states. As a comorbidity, muscle wasting is associated with different neuromuscular diseases and myopathies, cancer, heart failure, chronic pulmonary and renal diseases, peripheral neuropathies, inflammatory disorders and of course, musculoskeletal injuries. Current treatment strategies are relatively ineffective and can at best only limit the rate of muscle degeneration. Read More

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September 2021

Robust Scene Parsing by Mining Supportive Knowledge From Dataset.

IEEE Trans Neural Netw Learn Syst 2021 Sep 14;PP. Epub 2021 Sep 14.

Scene parsing, or semantic segmentation, aims at labeling all pixels in an image with the predefined categories of things and stuff. Learning a robust representation for each pixel is crucial for this task. Existing state-of-the-art (SOTA) algorithms employ deep neural networks to learn (discover) the representations needed for parsing from raw data. Read More

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September 2021

Resilience, Perceived Stress, and Depressed Mood in Women Under in Vitro Fertilization Treatment.

Reprod Sci 2021 Sep 14. Epub 2021 Sep 14.

Universidad de Oviedo, Departamento de Cirugía y Especialidades Medico Quirurgicas, Hospital Universitario Central de Asturias, Av. Roma, s/n, 33011, Oviedo, Asturias, Spain.

It has been suggested that women who display higher resilience levels may have less psychological distress during IVF. The aim of this study was to evaluate how infertile women deal with perceived stress, depressed mood, and sleep disturbances at the first IVF attempt and after one or more negative IVF outcomes depending on their level of resilience. An observational, cross-sectional study was carried out in a sample of 207 infertile women undergoing IVF procedures. Read More

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September 2021

Construction of a eukaryotic expression system with stable and secretory expression of mycobacterium tuberculosis 38 kDa protein.

World J Microbiol Biotechnol 2021 Sep 14;37(10):175. Epub 2021 Sep 14.

School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, 510515, China.

The 38 kDa protein is a major antigen of mycobacterium tuberculosis and has been widely used in TB serodiagnosis, due to its highly sensitivity and specificity. Here we attempt to establish a production platform of recombinant 38 kDa protein in mammalian cells and to evaluate the potential value of 38 kDa protein in TB serodiagnosis. The 38 kDa gene is synthesized and cloned into a lentiviral expressing vector. Read More

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September 2021

Carbon reservoir perturbations induced by Deccan volcanism: Stable isotope and biomolecular perspectives from shallow marine environment in Eastern India.

Geobiology 2021 Sep 14. Epub 2021 Sep 14.

Department of Earth Sciences, Indian Institute of Science Education and Research Kolkata, Nadia, West Bengal, India.

The Deccan Traps in Western India is hypothesized to have caused significant fluctuations in climatic condition and organic matter (OM) productivity across the Cretaceous-Paleogene Boundary (K/PgB). The periodic release of large amounts of volatiles into the atmosphere is thought to drive these changes. Yet, direct impact of volcanism on the carbon cycle and ecosystem remains relatively unconstrained. Read More

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September 2021

Airborne SARS-CoV-2 surveillance in hospital environment using high-flowrate air samplers and its comparison to surface sampling.

Indoor Air 2021 Sep 14. Epub 2021 Sep 14.

Singapore Centre for Environmental Life Sciences Engineering, Nanyang Technological University, Singapore, Singapore.

Reliable methods to detect the presence of SARS-CoV-2 at venues where people gather are essential for epidemiological surveillance to guide public policy. Communal screening of air in a highly crowded space has the potential to provide early warning on the presence and potential transmission of SARS-CoV-2 as suggested by studies early in the epidemic. As hospitals and public facilities apply varying degrees of restrictions and regulations, it is important to provide multiple methodological options to enable environmental SARS-CoV-2 surveillance under different conditions. Read More

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September 2021

Study of dynamic behaviour of psychological stress during COVID-19 in India: A mathematical approach.

Results Phys 2021 Oct 17;29:104661. Epub 2021 Aug 17.

Department of Mathematics and General Sciences, Prince Sultan University, Saudi Arabia.

In this study, a new attempt has been made using mathematical modelling to study dynamic behaviour and estimate the final size of spread of the psychological stress arising due to sudden outbreak of COVID-19 in India. The proposed mathematical model examines and includes different behaviours of transition from one process to another in current situation and study their propagation mode. We propose a mathematical model, where two different type of psychological stresses occur due to COVID-19 situation and its impact on people's life such as their mental well being and happiness. Read More

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October 2021

Selection of mesophotic habitats by Oculina patagonica in the Eastern Mediterranean Sea following global warming.

Sci Rep 2021 Sep 13;11(1):18134. Epub 2021 Sep 13.

Department of Marine Biology, Leon H. Charney School of Marine Sciences, University of Haifa, Haifa, Israel.

Globally, species are migrating in an attempt to track optimal isotherms as climate change increasingly warms existing habitats. Stony corals are severely threatened by anthropogenic warming, which has resulted in repeated mass bleaching and mortality events. Since corals are sessile as adults and with a relatively old age of sexual maturity, they are slow to latitudinally migrate, but corals may also migrate vertically to deeper, cooler reefs. Read More

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September 2021

RORγt Promotes Foxp3 Expression by Antagonizing the Effector Program in Colonic Regulatory T Cells.

J Immunol 2021 Sep 13. Epub 2021 Sep 13.

Department of Pathology, University of Alabama at Birmingham, Birmingham, AL;

RORγt is the master transcription factor for the Th17 cells. Paradoxically, in the intestine, RORγt is coexpressed in peripherally induced regulatory T cells (pTregs) together with Foxp3, the master transcription factor for Tregs. Unexpectedly, by an unknown mechanism, colonic RORγt Tregs show an enhanced suppressor function and prevent intestinal inflammation more efficiently than RORγt-nonexpressing pTregs. Read More

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September 2021