keyword
https://read.qxmd.com/read/38593050/recent-advancements-and-future-prospects-in-nbd-based-fluorescent-chemosensors-design-strategy-sensing-mechanism-and-biological-applications
#1
REVIEW
Gurdeep Kaur, Richa Rani, Jeevika Raina, Iqubal Singh
In recent years, the field of Supramolecular Chemistry has witnessed tremendous progress owing to the development of versatile optical sensors for the detection of harmful biological analytes. Nitrobenzoxadiazole (NBD) is one such scaffold that has been exploited as fluorescent probes for selective recognition of harmful analytes and their optical imaging in various cell lines including HeLa, PC3, A549, SMMC-7721, MDA-MB-231, HepG2, MFC-7, etc. The NBD-derived molecular probes are majorly synthesized from the chloro derivative of NBD via nucleophilic aromatic substitution...
April 9, 2024: Critical Reviews in Analytical Chemistry
https://read.qxmd.com/read/38564781/ionic-conductivity-of-a-lithium-doped-deep-eutectic-solvent-glass-formation-and-rotation-translation-coupling
#2
JOURNAL ARTICLE
A Schulz, P Lunkenheimer, A Loidl
Deep eutectic solvents with admixed lithium salts are considered as electrolytes in electrochemical devices, such as batteries or supercapacitors. Compared to eutectic mixtures of hydrogen-bond donors and lithium salts, their raw-material costs are significantly lower. Not much is known about glassy freezing and rotational-translation coupling of such systems. Here, we investigate these phenomena by applying dielectric spectroscopy to the widely studied deep eutectic solvent glyceline, to which 1 and 5 mol % LiCl were added...
April 2, 2024: Journal of Physical Chemistry. B
https://read.qxmd.com/read/38534223/miniaturized-biosensors-based-on-lanthanide-doped-upconversion-polymeric-nanofibers
#3
REVIEW
Neha Dubey, Sudeshna Chandra
Electrospun nanofibers possess a large surface area and a three-dimensional porous network that makes them a perfect material for embedding functional nanoparticles for diverse applications. Herein, we report the trends in embedding upconversion nanoparticles (UCNPs) in polymeric nanofibers for making an advanced miniaturized (bio)analytical device. UCNPs have the benefits of several optical properties, like near-infrared excitation, anti-Stokes emission over a wide range from UV to NIR, narrow emission bands, an extended lifespan, and photostability...
February 21, 2024: Biosensors
https://read.qxmd.com/read/38479636/meniscus-repair-technique-must-be-determined-on-a-tear-by-tear-basis-hybrid-techniques-plus-biologics-are-optimal
#4
EDITORIAL
Daniel J Stokes, Rachel M Frank
Bucket-handle meniscus tears alter knee biomechanics and significantly elevate the risk of osteoarthritis when the tissue is not preserved. Consequentially, meniscus repair is preferred whenever possible to optimize load distribution and knee stability, with the overall goal of joint preservation. Bucket-handle meniscus tears have a higher rate of repair failure compared to many other tear patterns, and both the inside-out (IO) and all-inside (AI) techniques are acceptable options, each with distinct advantages and disadvantages...
March 11, 2024: Arthroscopy
https://read.qxmd.com/read/38473676/the-impact-of-marangoni-and-buoyancy-convections-on-flow-and-segregation-patterns-during-the-solidification-of-fe-0-82wt-c-steel
#5
JOURNAL ARTICLE
Ibrahim Sari, Menghuai Wu, Mahmoud Ahmadein, Sabbah Ataya, Nashmi Alrasheedi, Abdellah Kharicha
Due to the high computational costs of the Eulerian multiphase model, which solves the conservation equations for each considered phase, a two-phase mixture model is proposed to reduce these costs in the current study. Only one single equation for each the momentum and enthalpy equations has to be solved for the mixture phase. The Navier-Stokes and energy equations were solved using the 3D finite volume method. The model was used to simulate the liquid-solid phase transformation of a Fe-0.82wt%C steel alloy under the effect of both thermocapillary and buoyancy convections...
March 5, 2024: Materials
https://read.qxmd.com/read/38415811/upconversion-nanoparticles-based-sensing-from-design-to-point-of-care-testing
#6
REVIEW
Jizhong Wu, Jiaxi Wu, Wenya Wei, Yong Zhang, Quansheng Chen
Rare earth-doped upconversion nanoparticles (UCNPs) have achieved a wide range of applications in the sensing field due to their unique anti-Stokes luminescence property, minimized background interference, excellent biocompatibility, and stable physicochemical properties. However, UCNPs-based sensing platforms still face several challenges, including inherent limitations from UCNPs such as low quantum yields and narrow absorption cross-sections, as well as constraints related to energy transfer efficiencies in sensing systems...
February 28, 2024: Small
https://read.qxmd.com/read/38405027/lessons-learned-from-a-citywide-abandoned-housing-experiment
#7
JOURNAL ARTICLE
John MacDonald, Ahuva Jacobowitz, Jason Gravel, Mitchell Smith, Robert Stokes, Vicky Tam, Eugenia South, Charles Branas
PROBLEM RESEARCH STRATEGY AND FINDINGS: The negative impact of vacant and abandoned housing in city neighborhoods is extreme, affecting health and quality of life, promoting violence, and leading to further abandonment. One approach to addressing abandoned housing is to intervene with low-cost interventions that provide a visual sense of ownership. We tested whether a low-cost remediation of abandoned and vacant houses or a trash cleanup intervention would make a noticeable difference in the levels of nearby disrepair, disorder, and public safety...
2024: Journal of the American Planning Association
https://read.qxmd.com/read/38388635/probing-delivery-of-a-lipid-nanoparticle-encapsulated-self-amplifying-mrna-vaccine-using-coherent-raman-microscopy-and-multiphoton-imaging
#8
JOURNAL ARTICLE
Kajari Bera, Renán A Rojas-Gómez, Prabuddha Mukherjee, Corey E Snyder, Edita Aksamitiene, Aneesh Alex, Darold R Spillman, Marina Marjanovic, Ahmed Shabana, Russell Johnson, Steve R Hood, Stephen A Boppart
The COVID-19 pandemic triggered the resurgence of synthetic RNA vaccine platforms allowing rapid, scalable, low-cost manufacturing, and safe administration of therapeutic vaccines. Self-amplifying mRNA (SAM), which self-replicates upon delivery into the cellular cytoplasm, leads to a strong and sustained immune response. Such mRNAs are encapsulated within lipid nanoparticles (LNPs) that act as a vehicle for delivery to the cell cytoplasm. A better understanding of LNP-mediated SAM uptake and release mechanisms in different types of cells is critical for designing effective vaccines...
February 22, 2024: Scientific Reports
https://read.qxmd.com/read/38352983/a-multimodal-intervention-to-reduce-c-difficile-infections-and-stool-testing
#9
JOURNAL ARTICLE
Jillian M Cotter, Claire L Stokes, Suhong Tong, Meghan Birkholz, Jason Child, Carrye Cost, Rebecca Coughlin, Stephanie Cox, Susan A Dolan, Kathleen Dorris, Keith Z Hazleton, Virginia Lugo, Mikayla Norcross, Kelly Pearce, Samuel R Dominguez
BACKGROUND AND OBJECTIVES: The introduction of multiplex gastrointestinal panels at our institution resulted in increased Clostridioides difficile (C. difficile) detection and stool test utilization. We aimed to reduce hospital-onset C. difficile infections (HO-CDIs), C. difficile detection, and overall stool testing by 20% within 1 year. METHODS: We conducted a quality improvement project from 2018 to 2020 at a large children's hospital. Interventions included development of a C...
February 14, 2024: Pediatrics
https://read.qxmd.com/read/38350719/electrocatalytic-oxidation-of-pyrrole-on-a-quasi-reversible-silver-nanodumbbell-particle-surface-for-supramolecular-porphyrin-production
#10
JOURNAL ARTICLE
Olayemi Jola Fakayode, Reagan L Mohlala, Rudzani Ratshiedana, Bambesiwe M May, Eno E Ebenso, Usisipho Feleni, Thabo T I Nkambule
Photoactive supramolecular porphyrin assemblies are attractive molecules for light-harvesting applications. This is due to their relatively non-toxicity, biological activities and charge and energy exchange characteristics. However, the extreme cost associated with their synthesis and requirements for toxic organic solvents during purification pose a challenge to the sustainability characteristics of their applications. This work presents the first report on the sustainable synthesis, spectroscopic and photophysical characterizations of a near-infrared (NIR) absorbing Ca(II)-meso-tetrakis (4-hydroxyphenyl)porphyrin using an electrolyzed pyrrole solution...
February 13, 2024: ChemistryOpen
https://read.qxmd.com/read/38344052/a-guide-to-the-medical-school-curriculum-vitae
#11
JOURNAL ARTICLE
Konnor Davis, Megan Boysen-Osborn, Alisa Wray, Lauren Stokes
AUDIENCE: Although this lecture is aimed at medical students, it can also be utilized for residents, fellows, and junior faculty. BACKGROUND: The topic of teaching medical students about the fundamentals of creating a curriculum vitae (CV) is important because a CV serves as a record of scholastic and professional experiences.1 Thus, their CV will undoubtedly play a vital role in residency applications.2,3 Intentional instruction about the elements to incorporate in a CV are especially important for first-generation and underrepresented students in the medical field because they may not have had as much exposure to both the requirements of a residency application nor qualities of an effective CV...
January 2024: Journal of education & teaching in emergency medicine
https://read.qxmd.com/read/38343036/development-and-evaluation-of-a-de-escalation-training-intervention-in-adult-acute-and-forensic-units-the-edition-systematic-review-and-feasibility-trial
#12
Owen Price, Cat Papastavrou Brooks, Isobel Johnston, Peter McPherson, Helena Goodman, Andrew Grundy, Lindsey Cree, Zahra Motala, Jade Robinson, Michael Doyle, Nicholas Stokes, Christopher J Armitage, Elizabeth Barley, Helen Brooks, Patrick Callaghan, Lesley-Anne Carter, Linda M Davies, Richard J Drake, Karina Lovell, Penny Bee
BACKGROUND: Containment (e.g. physical restraint and seclusion) is used frequently in mental health inpatient settings. Containment is associated with serious psychological and physical harms. De-escalation (psychosocial techniques to manage distress without containment) is recommended to manage aggression and other unsafe behaviours, for example self-harm. All National Health Service staff are trained in de-escalation but there is little to no evidence supporting training's effectiveness...
January 2024: Health Technology Assessment: HTA
https://read.qxmd.com/read/38338473/aminoquinoline-based-tridentate-nnn-copper-catalyst-for-c-n-bond-forming-reactions-from-aniline-and-diazo-compounds
#13
JOURNAL ARTICLE
Mohsen Teimouri, Selvam Raju, Edward Acheampong, Allison N Schmittou, Bruno Donnadieu, David O Wipf, Brad S Pierce, Sean L Stokes, Joseph P Emerson
A new tridentate Cu2+ complex based on ( E )-1-(pyridin-2-yl)- N -(quinolin-8-yl)methanimine (PQM) was generated and characterized to support the activation of diazo compounds for the formation of new C-N bonds. This neutral Schiff base ligand was structurally characterized to coordinate with copper(II) in an equatorial fashion, yielding a distorted octahedral complex. Upon characterization, this copper(II) complex was used to catalyze an efficient and cost-effective protocol for C-N bond formation between N -nucleophiles and copper carbene complexes arising from the activation of diazo carbonyl compounds...
February 5, 2024: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://read.qxmd.com/read/38300038/bright-luminescence-from-nontoxic-all-inorganic-low-dimensional-cesium-halide
#14
JOURNAL ARTICLE
Ranran Fan, Junpeng Qiao, Jiaxin Xu, Sujuan Feng, Guangqiang Liu
Due to the superiority of low cost, easy manufacture, and tunable light emission owing to the diversity of compositions and dimensionalities, the metal halides have appeared as a promising class of semiconductors. Nevertheless, the toxicity problem along with inherent instability of Pb-based metal halides greatly limits their large-scale applications. Based on this situation, it is necessary to develop eco-friendly materials, which could simultaneously maintain the excellent optoelectronic properties of lead materials...
February 1, 2024: Optics Letters
https://read.qxmd.com/read/38297586/high-resolution-3d-imaging-in-light-field-microscopy-through-stokes-matrices-and-data-fusion
#15
JOURNAL ARTICLE
Wenqi Shi, Hongda Quan, Lingbao Kong
The trade-off between the lateral and vertical resolution has long posed challenges to the efficient and widespread application of Fourier light-field microscopy, a highly scalable 3D imaging tool. Although existing methods for resolution enhancement can improve the measurement result to a certain extent, they come with limitations in terms of accuracy and applicable specimen types. To address these problems, this paper proposed a resolution enhancement scheme utilizing data fusion of polarization Stokes vectors and light-field information for Fourier light-field microscopy system...
January 29, 2024: Optics Express
https://read.qxmd.com/read/38255454/theoretical-prediction-of-thermal-expansion-anisotropy-for-y-2-si-2-o-7-environmental-barrier-coatings-using-a-deep-neural-network-potential-and-comparison-to-experiment
#16
JOURNAL ARTICLE
Cameron J Bodenschatz, Wissam A Saidi, Jamesa L Stokes, Rebekah I Webster, Gustavo Costa
Environmental barrier coatings (EBCs) are an enabling technology for silicon carbide (SiC)-based ceramic matrix composites (CMCs) in extreme environments such as gas turbine engines. However, the development of new coating systems is hindered by the large design space and difficulty in predicting the properties for these materials. Density Functional Theory (DFT) has successfully been used to model and predict some thermodynamic and thermo-mechanical properties of high-temperature ceramics for EBCs, although these calculations are challenging due to their high computational costs...
January 5, 2024: Materials
https://read.qxmd.com/read/38250513/solving-inverse-problems-in-physics-by-optimizing-a-discrete-loss-fast-and-accurate-learning-without-neural-networks
#17
JOURNAL ARTICLE
Petr Karnakov, Sergey Litvinov, Petros Koumoutsakos
In recent years, advances in computing hardware and computational methods have prompted a wealth of activities for solving inverse problems in physics. These problems are often described by systems of partial differential equations (PDEs). The advent of machine learning has reinvigorated the interest in solving inverse problems using neural networks (NNs). In these efforts, the solution of the PDEs is expressed as NNs trained through the minimization of a loss function involving the PDE. Here, we show how to accelerate this approach by five orders of magnitude by deploying, instead of NNs, conventional PDE approximations...
January 2024: PNAS Nexus
https://read.qxmd.com/read/38233916/how-do-hospitals-respond-to-payment-unbundling-for-diagnostic-imaging-of-suspected-cancer-patients
#18
JOURNAL ARTICLE
Helen Hayes, Jonathan Stokes, Matt Sutton, Rachel Meacock
Payments for some diagnostic scans undertaken in outpatient settings were unbundled from Diagnosis Related Group based payments in England in April 2013 to address under-provision. Unbundled scans attracted additional payments of between £45 and £748 directly following the reform. We examined the effect on utilization of these scans for patients with suspected cancer. We also explored whether any detected effects represented real increases in use of scans or better coding of activity. We applied difference-in-differences regression to patient-level data from Hospital Episodes Statistics for 180 NHS hospital Trusts in England, between April 2010 and March 2018...
January 17, 2024: Health Economics
https://read.qxmd.com/read/38206884/improved-interface-construction-on-anode-and-cathode-for-na-ion-batteries-using-ultralow-concentration-electrolyte-containing-dual-additives
#19
JOURNAL ARTICLE
Yilong Lin, Xiaojing Jin, Shuqing Gao, Feng Liu, Sheng Huang, Xuerui Yang, Yanwu Chen, Yuezhong Meng
Compared with Li+, Na+ with a smaller stokes radius has faster de-solvation kinetics. An electrolyte with ultralow sodium salt (0.3 M NaPF6) is used to reduce the cell cost. However, the organic-dominated interface, mainly derived from decomposed solvents (SSIP solvation structure), is defective for the long cycling performance of sodium ion batteries. In this work, the simple application of dual additives, including sodium difluoro(oxalato)borate (NaDFOB) and tris(trimethylsilyl)borate (TMSB), is demonstrated to improve the cycling performance of the hard carbon/NaNi1/3Fe1/3Mn1/3O2 cell by constructing interface films on the anode and cathode...
January 11, 2024: Chemistry: a European Journal
https://read.qxmd.com/read/38175160/a-continuum-model-for-magnetic-particle-flows-in-microfluidics-applicable-from-dilute-to-packed-suspensions
#20
JOURNAL ARTICLE
Simon Dumas, Stéphanie Descroix
The manipulation of magnetic microparticles has always been pivotal in the development of microfluidic devices, as it encompasses a broad range of applications, such as drug delivery, bioanalysis, on-chip diagnostics, and more recently organ-on-chip development. However, predicting the behavior and trajectory of these particles remains a recurring and partly unresolved question. Magnetic particle-laden flows can display intricate collective behaviors, such as packed plugs, column-shaped aggregates, or fluidization, which are difficult to predict...
January 4, 2024: Lab on a Chip
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