200 results match your criteria: "Center of Research and Development[Affiliation]"

Liquid deformation and motion are very common natural phenomena and of great value in various practical applications. In this study, a dielectric fluid column formation and directional flow phenomenon are presented. Dielectric fluid can grow upward to form a liquid column through a spatial electric field and realize directional and controllable operation of the liquid column by regulating spatial electric field distribution.

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Background: Updated vaccine strategies are needed to protect against new SARS-CoV-2 variants with increased immune escape. Here, information on the safety and immunogenicity of an inactivated Omicron-adapted vaccine is presented, as compared with CoronaVac.

Methods: A randomized, double-blind, active-controlled, phase III clinical trial was conducted to compare a modified Omicron-adapted vaccine (Omicron vaccine) with the authorized prototype vaccine (CoronaVac®) as a booster dose.

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Biophysical characterization of the cetacean morbillivirus haemagglutinin glycoprotein.

Virus Res

October 2023

Laboratory of Microbial Ecology and Genomics, Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, Italy.

Article Synopsis
  • Cetacean morbillivirus (CeMV) is a harmful RNA virus that infects marine mammals and can cause widespread disease outbreaks across different species.
  • Researchers successfully cloned, expressed, and purified a recombinant version of the virus's haemagglutinin (H) glycoprotein, known as rH-ecto, which is crucial for the virus’s infection process.
  • Various techniques confirmed that rH-ecto is a stable, well-formed protein that could serve as a valuable model for studying the virus's structure and function in future research.
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The coronavirus disease 2019 (COVID-19) pandemic is fading, however its etiologic agent severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) continues posing - despite the availability of licensed vaccines - a global health threat, due to the potential emergence of vaccine-resistant SARS-CoV-2 variants. This makes the development of new drugs against COVID-19 a persistent urgency and sets as research priority the validation of novel therapeutic targets within the SARS-CoV-2 proteome. Among these, a promising one is the SARS-CoV-2 nucleocapsid (N) phosphoprotein, a major structural component of the virion with indispensable role in packaging the viral genome into a ribonucleoprotein (RNP) complex, which also contributes to SARS-CoV-2 innate immune evasion by inhibiting the host cell type-I interferon (IFN-I) response.

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Modulation of fibroblast growth factor-23 expression and transepithelial calcium absorption in Caco-2 monolayer by calcium-sensing receptor and calcineurin under calcium hyperabsorptive state.

Biochem Biophys Res Commun

June 2023

Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom, Thailand; Center of Calcium and Bone Research (COCAB), Faculty of Science, Mahidol University, Bangkok, Thailand; Department of Physiology, Faculty of Science, Mahidol University, Bangkok, Thailand; The Academy of Science, The Royal Society of Thailand, Bangkok, Thailand. Electronic address:

Fibroblast growth factor (FGF)-23 and calcium-sensing receptor (CaSR) have previously been postulated to be parts of a negative feedback regulation of the intestinal calcium absorption to prevent excessive calcium uptake and its toxicity. However, the underlying mechanism of this feedback regulation remained elusive, especially whether it required transcription of FGF-23. Herein, we induced calcium hyperabsorptive state (CHS) by exposing intestinal epithelium-like Caco-2 monolayer to 30 mM CaCl and 1,25-dihydroxyvitamin D [1,25(OH)D] after which FGF-23 mRNA levels and transepithelial calcium flux were determined.

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Optical Encoding Model Based on Orbital Angular Momentum Powered by Machine Learning.

Sensors (Basel)

March 2023

Escuela Superior Politécnica del Litoral, ESPOL, Departamento de Física, Campus Gustavo Galindo, Km 30.5 Vía Perimetral, P.O. Box 09-01-5863, Guayaquil 090150, Ecuador.

Based on orbital angular momentum (OAM) properties of Laguerre-Gaussian beams LG(p,ℓ), a robust optical encoding model for efficient data transmission applications is designed. This paper presents an optical encoding model based on an intensity profile generated by a coherent superposition of two OAM-carrying Laguerre-Gaussian modes and a machine learning detection method. In the encoding process, the intensity profile for data encoding is generated based on the selection of and indices, while the decoding process is performed using a support vector machine (SVM) algorithm.

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Due to their selective toxicity to insects, nicotinoid compounds have been widely used to control pests in crops and livestock around the world. However, despite the advantages presented, much has been discussed about their harmful effects on exposed organisms, either directly or indirectly, with regards to endocrine disruption. This study aimed to evaluate the lethal and sublethal effects of imidacloprid (IMD) and abamectin (ABA) formulations, separately and combined, on zebrafish () embryos at different developmental stages.

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SSR identification and phylogenetic analysis in four plant species based on complete chloroplast genome sequences.

Plasmid

March 2023

Enshi Tujia & Miao Autonomous Prefecture Academy of Agricultural Sciences, Enshi 445000, China; Center of Research and Development, Senium Science Development (Zhejiang) Company Limited, Hangzhou 311121, China. Electronic address:

The effective utilization of traditional Chinese medicine (TCM) has been challenged by the difficulty to accurately distinguish between similar plant varieties. The stability and conservation of the chloroplast genome can aid in resolving genotypes. Previous studies using nuclear sequences and molecular markers have not effectively differentiated the species from related taxa, such as Machilus leptophylla, Hanceola exserta, Rubus bambusarum, and Rubus henryi.

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Background: Malaria is one of the biggest impediments to global progress. In Peru, it is still a major public health problem. Measures of health and economic burden due to malaria are relevant considerations for the assessment of current policies.

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Combinations of drugs may be fixed (two or more entities in a single product) or loose (two or more agents taken together but as individual agents) to help address multimechanistic pain. The use of opioids plus nonopioids can result in lower opioid consumption without sacrificing analgesic benefits. Drug combinations may offer additive or synergistic benefits.

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Article Synopsis
  • Numerous NSAIDs are effective for managing acute postoperative pain following oral surgeries like wisdom tooth extractions, and dental studies often help in understanding analgesic effectiveness.
  • A literature review examined recent randomized controlled trials comparing NSAIDs for postoperative pain management, focusing on head-to-head studies for insights into effectiveness.
  • While NSAIDs like ibuprofen and naproxen are commonly used, there isn't a definitive "best" NSAID, and combination therapy with other pain relievers is widely practiced.
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Vasoactive intestinal peptide (VIP) as a neurocrine factor released by enteric neurons has been postulated to participate in the regulation of transcellular active calcium transport across intestinal epithelium, but the preceding evidence is scant and inconclusive. Herein, transepithelial calcium flux and epithelial electrical parameters were determined by Ussing chamber technique with radioactive tracer in the intestinal epithelium-like Caco-2 monolayer grown on Snapwell. After 3-day culture, Caco-2 cells expressed mRNA of calcium transporters, i.

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Atypical opioids such as tramadol, tapentadol, and cebranopadol combine two complementary mechanisms of action into a single molecule, creating novel analgesic agents. These are synthetic small molecules: cebranopadol is not yet market released; tramadol and tapentadol are commercially available and have immediate-release (IR) and extended-release (ER) formulations. Tramadol has been widely used in the United States in recent years and works as a prodrug in that its metabolites are active in inhibiting serotonin and norepinephrine reuptake.

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Cocaine is taken frequently together with ethanol and this combination produces a psychoactive metabolite called cocaethylene which has similar properties to the parent drug and may be more cardiotoxic. Cocaethylene has a longer half-life than cocaine, so that people who combine cocaine and ethanol may experience a longer-lasting, as well as more intense, psychoactive effect. Cocaethylene is the only known instance where a new psychoactive substance is formed entirely within the body.

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The aim of the present work is the characterization of biscuit doughs enriched with pomegranate peel powder (PPP) at 3 (PPP3) and 5 (PPP5) wt% in the prospect of developing a fortified aliment as a support of the therapy of chronic inflammatory diseases of the intestinal tract. The total phenolic content of the powder was preliminarily evaluated. Then, the main compounds present in the PPP were identified by HPLC-ESI-TOF-MS analysis, being mainly hydrolysable tannins.

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Treating Apnea of Prematurity.

Cureus

January 2022

President, Paolo Procacci Foundation, Rome, ITA.

Premature babies often suffer apnea of prematurity as a physiological consequence of an immature respiratory system. Hypercapnia may develop, and neonates with apnea of prematurity are at an increased risk of morbidity and mortality. The long-term effects of apnea of prematurity or their treatments are less clear.

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Orbital floor fractures subsequently lead to consequences such as diplopia and enophthalmos. The graft materials used in orbital floor fractures varied from autografts to alloplastic grafts, which possess certain limitations. In the present study, a novel porcine bone matrix decellularized by supercritical CO2 (scCO2), ABCcolla® Collagen Bone Graft, was used for the reconstruction of the orbital framework.

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Article Synopsis
  • CFTR is a protein that helps control salt and water balance in the body, and problems with it can lead to cystic fibrosis and other related diseases.
  • Scientists studied cells from people with and without cystic fibrosis to see how different gene changes affect how well CFTR works.
  • They found that certain tests on these cells could help understand CFTR function and guide future treatments for cystic fibrosis.
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The Barrier to Contraceptive Use among Multiparous Women in Indonesia.

Indian J Community Med

October 2021

Department of Reproductive Health, Faculty of Public Health, Ahmad Dahlan University, Yogyakarta, Indonesia.

Background: The lack of perception related to the risk of pregnancy and contraceptive use's side effects is the main reason for not using contraceptives.

Objective: This study aimed to analyze barriers to contraceptive use among multiparous women in Indonesia.

Methods: This study employed the 2017 Indonesia Demographic and Health Survey.

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Residual olfactory dysfunction in coronavirus disease 2019 patients after long term recovery.

J Clin Neurosci

November 2021

Department of Neurology, Puai Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430033, China. Electronic address:

Introduction: Hyposmia is among the most common symptoms of COVID-19 patients. Previous research has mainly described this issue at the disease's early stages. Because olfactory impairment can indicate neurological degeneration, we investigated the possibility of permanent olfactory damage by assessing hyposmia during the late recovery stage of COVID-19 patients.

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The 'third wave' of the ongoing opioid overdose crisis in the United States (US) is driven in large measure by illicitly manufactured fentanyl (IMF), a highly potent synthetic opioid or an analog developed in clandestine laboratories primarily in China and Mexico. It is smuggled into this country either as IMF or as precursors. The southern border of the US is a frequent point of entry for smuggled IMF and the amounts are increasing year over year.

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More than half of the people with dementia live in lower-middle income countries (LMIC), yet we lack research and evidence-based knowledge to guide health promotion and prevention strategies for cognitive decline. In the Philippines, the prevalence of mild cognitive impairment (MCI) and cardiovascular risk factors among older persons are high, making this population at high risk for developing dementia. This protocol describes a cluster randomized controlled trial that aims to investigate the efficacy of a multicomponent intervention to maintain cognitive performance among high-risk population.

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Prolonged implementation of lockdowns during the coronavirus disease 2019 (COVID-19) pandemic has resulted in older adults living alone in social isolation. The purpose of the study was to describe the meaning of the experience of Filipino older adults, who are living alone and using social media technologies during the COVID-19 pandemic. Eight participants who met the inclusion criteria were interviewed using the snowball selection technique.

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Sustainability of Civil Structures through the Application of Smart Materials: A Review.

Materials (Basel)

August 2021

College of Civil Engineering, University Town, Key Lab of Fujian Province, Fuzhou University, 2 Xueyuan Road, Fuzhou 350108, China.

Every year, structural flaws or breakdowns cause thousands of people to be harmed and cost billions of dollars owing to the limitations of design methods and materials to withstand extreme earthquakes. Since earthquakes have a significant effect on sustainability factors, there is a contradiction between these constraints and the growing need for more sustainable structures. There has been a significant attempt to circumvent these constraints by developing various techniques and materials.

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