keyword
https://read.qxmd.com/read/38544072/synergistically-enhanced-electrochemical-sensing-of-food-adulterant-in-milk-sample-at-erbium-vanadate-graphitic-carbon-nitride-composite
#1
JOURNAL ARTICLE
U G Anushka Sanjeewani, Sea-Fue Wang
Dimetridazole (DMZ), a nitroimidazole derivative, is a notable antibiotic that has garnered growing interest in the medical community owing to its noteworthy pharmacological and toxicological properties. Increasing interest is being directed toward developing high-performance sensors for continuous monitoring of DMZ in food samples. This research investigated an electrochemical sensor-based nano-sized ErVO4 attached to a sheet-like g-CN-coated glassy carbon electrode to determine dimetridazole (DMZ). The chemical structure and morphological characterization of synthesized ErVO4 @g-CN were analyzed with XRD, FTIR, TEM, and EDS...
March 11, 2024: Sensors
https://read.qxmd.com/read/38543363/reactive-deep-eutectic-solvent-for-an-eco-friendly-synthesis-of-cellulose-carbamate
#2
JOURNAL ARTICLE
Vincenzo Algieri, Loredana Maiuolo, Debora Procopio, Paola Costanzo, Fiore Pasquale Nicoletta, Sonia Trombino, Maria Luisa Di Gioia, Antonio De Nino
The limited solubility of natural cellulose in water and common organic solvents hinders its diverse applications, despite being one of the most abundant and easily accessible biopolymers on Earth. Chemical derivatization, such as cellulose carbamate (CC), offers a pathway to enhance both solubility and industrial processability. In this study, CC was synthesized by exploiting a novel type IV deep eutectic solvent (DES) composed of erbium trichloride and urea. This DES was shown to be not only an environmentally friendly reaction medium/catalyst but also actively participated in the synthetic process as a reagent...
March 9, 2024: Polymers
https://read.qxmd.com/read/38541163/laser-therapy-effects-on-periodontal-status-a-randomized-study-using-gaussian-network-analysis-and-structural-equation-modeling-approach
#3
JOURNAL ARTICLE
Codruta Elena Ciurescu, Lorena Dima, Vlad Alexandru Ciurescu, Gratiela Georgiana Noja, Alin Viorel Istodor, Marius Alexandru Moga, Lavinia Cosmina Ardelean, Laura-Cristina Rusu, Marius Traian Leretter
Background and Objectives: This paper aims to assess the role of laser therapy in periodontitis through an innovative approach involving computational prediction and advanced modeling performed through network analysis (Gaussian graphical models-GGMs) and structural equations (SEM). Materials and Methods: Forty patients, exhibiting periodontal pockets with a minimum depth of 5 mm, were randomly divided into two groups: a control group and a laser group. Four specific indicators were measured for each tooth, namely periodontal pocket depth (PPD), clinical attachment level (CAL), bleeding on probing (BOP), and plaque index (PI), and the mean of six measured values was recorded at five time markers (baseline, 6 months, 1 year, 2 years, and 4 years)...
March 6, 2024: Medicina
https://read.qxmd.com/read/38533847/nanocavity-mediated-purcell-enhancement-of-er-in-tio-2-thin-films-grown-via-atomic-layer-deposition
#4
JOURNAL ARTICLE
Cheng Ji, Michael T Solomon, Gregory D Grant, Koichi Tanaka, Muchuan Hua, Jianguo Wen, Sagar Kumar Seth, Connor P Horn, Ignas Masiulionis, Manish Kumar Singh, Sean E Sullivan, F Joseph Heremans, David D Awschalom, Supratik Guha, Alan M Dibos
The use of trivalent erbium (Er3+ ), typically embedded as an atomic defect in the solid-state, has widespread adoption as a dopant in telecommunication devices and shows promise as a spin-based quantum memory for quantum communication. In particular, its natural telecom C-band optical transition and spin-photon interface make it an ideal candidate for integration into existing optical fiber networks without the need for quantum frequency conversion. However, successful scaling requires a host material with few intrinsic nuclear spins, compatibility with semiconductor foundry processes, and straightforward integration with silicon photonics...
March 27, 2024: ACS Nano
https://read.qxmd.com/read/38530563/exploring-the-gamma-ray-enhanced-nir-luminescence-and-cytotoxic-potential-of-lanthanide-naphthalene-dicarboxylate-based-metal-organic-frameworks
#5
JOURNAL ARTICLE
Podilapu Atchutha Rao, Harihara Padhy, Krishanu Bandyopadhyay, Adapaka Venkateswara Rao, Ravikumar Ganta, Samatha Bevara, Bheeshma Pratap Singh, Bhavani Kundrapu, Satyen Saha, RamaRao Malla, Saratchandra Babu Mukkamala
In this investigation, we explore the integration of lanthanides into Metal-Organic Frameworks (MOFs) to enable Near-Infrared (NIR) emission. Specifically, we focus on Lanthanide-Naphthalene Dicarboxylate based MOFs (Ln-MOFs), incorporating elements such as Praseodymium (Pr), Samarium (Sm), Dysprosium (Dy), and Erbium (Er). The synthesis of Ln-MOFs is achieved via the hydrothermal method. The structure, morphology, thermal stability, and luminescence properties of synthesized Ln-MOFs have been evaluated through different characterization techniques...
March 26, 2024: Journal of Fluorescence
https://read.qxmd.com/read/38522216/erbium-iii-complexes-with-fluoroquinolones-structure-and-biological-properties
#6
JOURNAL ARTICLE
Eleni Arnaouti, Christina Georgiadou, Antonios G Hatizdimitriou, Stavros Kalogiannis, George Psomas
Four erbium(III) complexes with the fluoroquinolones enrofloxacin, levofloxacin, flumequine and sparfloxacin as ligands were synthesized and characterized by a wide range of physicochemical and spectroscopic techniques as well as single-crystal X-ray crystallography. The compounds were evaluated for their activity against the bacterial strains Staphylococcus aureus, Bacillus subtilis, Escherichia coli and Xanthomonas campestris, which was higher than that of the corresponding free quinolones. The interaction mode of the complexes with calf-thymus DNA is via intercalation, as suggested by diverse studies such as UV-vis spectroscopy, DNA-viscosity measurements and competitive studies with ethidium bromide...
March 15, 2024: Journal of Inorganic Biochemistry
https://read.qxmd.com/read/38516080/-ab-initio-based-determination-of-lanthanoid-radical-exchange-as-visualised-by-inelastic-neutron-scattering
#7
JOURNAL ARTICLE
Maja A Dunstan, Marcus J Giansiracusa, Simone Calvello, Lorenzo Sorace, Anwen M Krause-Heuer, Alessandro Soncini, Richard A Mole, Colette Boskovic
Magnetic exchange coupling can modulate the slow magnetic relaxation in single-molecule magnets. Despite this, elucidation of exchange coupling remains a significant challenge for the lanthanoid(iii) ions, both experimentally and computationally. In this work, the crystal field splitting and 4f-π exchange coupling in the erbium-semiquinonate complex [ErTp2 dbsq] (Er-dbsq; Tp- = hydro-tris(1-pyrazolyl)borate, dbsqH2 = 3,5-di- tert -butyl-1,2-semiquinone) have been determined by inelastic neutron scattering (INS), magnetometry, and CASSCF-SO ab initio calculations...
March 20, 2024: Chemical Science
https://read.qxmd.com/read/38507227/fiber-optic-photoacoustic-co-sensor-for-gas-insulation-equipment-monitoring-based-on-cantilever-differential-lock-in-amplification-and-optical-excitation-enhancement
#8
JOURNAL ARTICLE
Xinyu Zhao, Fengxiang Ma, Heng Wang, Hongchao Qi, Chenxi Li, Min Guo, Ke Chen
A fiber-optic photoacoustic CO sensor for gas insulation equipment is proposed, which relies on F-P interferometric cantilever-based differential lock-in amplification and optical multipass excitation enhancement. The sensor has excellent characteristics of high sensitivity, antielectromagnetic interference, fast response, and long-distance detection. The photoacoustic pressure waves in the two resonators of the differential photoacoustic cell (DPAC) are simultaneously detected by two fiber-optic interferometric cantilevers and processed differentially; thereby, the gas flow noise is effectively suppressed...
March 20, 2024: Analytical Chemistry
https://read.qxmd.com/read/38506244/erbium-yag-laser-treatment-efficacy-and-association-with-histologic-features-for-giant-congenital-melanocytic-nevi-management
#9
JOURNAL ARTICLE
Yifei Zhao, Yun Zou, Hui Chen, Yamin Rao, Xiaoxi Lin
BACKGROUND: Limited research exists on laser treatment of giant congenital melanocytic nevus (GCMN). OBJECTIVE: We sought to elucidate the efficacy of the Erbium: YAG laser on GCMN and the histologic factors associated with a positive clinical response. METHODS AND MATERIALS: Between 2019 and 2022, we enrolled 30 medium-to-giant CMN patients who underwent Er: YAG laser treatment. All patients received biopsies before and after laser treatments...
March 20, 2024: Lasers in Surgery and Medicine
https://read.qxmd.com/read/38501030/pathological-insights-on-polypropylene-mesh-complications-from-laparoscopic-sacrocolpopexy-a-case-series
#10
JOURNAL ARTICLE
Nobuo Okui, Machiko A Okui
Background The use of polypropylene mesh in laparoscopic sacrocolpopexy (LSC) is a common treatment for pelvic organ prolapse (POP). Despite its widespread application, postoperative complications such as mesh pain and infection sometimes necessitate the removal of the mesh. However, it remains unclear in which cases mesh removal is warranted. Our research focused on the pathological changes at the sacral fixation point of the mesh. We sought to evaluate the pathological alterations of the sacral mesh removed through an innovative approach of transvaginal natural orifice transluminal endoscopic surgery (vNOTES)...
March 2024: Curēus
https://read.qxmd.com/read/38497193/dual-second-harmonic-generation-and-up-conversion-photoluminescence-emission-in-highly-optimized-linbo-3-nanocrystals-doped-and-co-doped-with-er-3-and-yb-3
#11
JOURNAL ARTICLE
K Bredillet, F Riporto, T Guo, A Dhouib, V Multian, V Monnier, P Figueras Llussà, S Beauquis, L Bonacina, Y Mugnier, R Le Dantec
Preparation from the aqueous alkoxide route of doped and co-doped lithium niobate nanocrystals with Er3+ and Yb3+ ions, and detailed investigations of their optical properties are presented in this comprehensive work. Simultaneous emission under femtosecond laser excitation of second harmonic generation (SHG) and up-conversion photoluminescence (UC-PL) is studied from colloidal suspensions according to the lanthanide ion contents. Special attention has been paid to produce phase pure nanocrystals of constant size (∼20 nm) thus allowing a straightforward comparison and optimization of the Er content for increasing the green UC-PL signals under 800 nm excitation...
March 18, 2024: Nanoscale
https://read.qxmd.com/read/38496814/eradication-of-mature-biofilm-from-the-isthmus-region-using-er-cr-ysgg-laser-as-an-activator-of-2-chlorhexidine-gluconate
#12
JOURNAL ARTICLE
Ghufran I Ibrahim, Hussein A Jawad
BACKGROUND: Challenges in the root canal system, such as isthmus, may limit the action of endodontic equipment and irrigation solutions, so using laser agitation is recommended to upgrade the removal of microbial biofilm. The objective of this study is to assess the effectiveness of the laser in photon-induced photoacoustic streaming protocol agitation of 2% chlorohexidine gluconate in removing mature biofilm in complex root canal systems. MATERIAL AND METHODS: Seventy-five mesial roots of the lower first and second molars were separated and cultivated with Enterococcus faecalis bacteria for 30 days (except for the negative control group samples)...
February 2024: Journal of Clinical and Experimental Dentistry
https://read.qxmd.com/read/38489464/multiwavelength-erbium-doped-fiber-laser-using-the-polarization-hole-burning-effect-for-multichannel-acoustic-detection
#13
JOURNAL ARTICLE
Cheng Zhou, Shengnan Zhou, Jiajun Tian, Yong Yao, Yongkang Dong
We propose and demonstrate a novel, to the best of our knowledge, fiber-optic multipoint acoustic detection system based on a multiwavelength erbium-doped fiber (EDF) laser (MWEDFL) using the polarization-hole-burning effect with Fabry-Perot interferometers as the acoustic cavity-loss modulator. A polarization-wavelength-related filter is designed to assign a distinct polarization state to each laser wavelength. By adjusting the polarization state, the polarization-dependent loss and gain of each laser line are tuned to be equal, effectively suppressing the mode competition of EDF and enabling a stable MWEDFL...
March 15, 2024: Optics Letters
https://read.qxmd.com/read/38487492/photoionisation-detection-of-a-single-er-3-ion-with-sub-100-ns-time-resolution
#14
JOURNAL ARTICLE
Yangbo Zhang, Wenda Fan, Jiliang Yang, Hao Guan, Qi Zhang, Xi Qin, Changkui Duan, Gabriele G de Boo, Brett C Johnson, Jeffrey C McCallum, Matthew J Sellars, Sven Rogge, Chunming Yin, Jiangfeng Du
Efficient detection of single optical centres in solids is essential for quantum information processing, sensing and single-photon generation applications. In this work, we use radio-frequency (RF) reflectometry to electrically detect the photoionisation induced by a single Er3+ ion in Si. The high bandwidth and sensitivity of the RF reflectometry provide sub-100-ns time resolution for the photoionisation detection. With this technique, the optically excited state lifetime of a single Er3+ ion in a Si nano-transistor is measured for the first time to be [Formula: see text]s...
April 2024: National Science Review
https://read.qxmd.com/read/38473488/the-efficacy-of-different-laser-applications-on-dentin-sealing-in-preventing-discoloration-induced-by-mineral-trioxide-aggregate
#15
JOURNAL ARTICLE
Yesim Sesen Uslu, Burçin Arıcan Alpay, Pinar Sesen, Taha Özyürek
The aim of this in vitro study was to evaluate the effect of the pre-application of a dentin-bonding agent and the application of different lasers on the prevention of tooth discoloration caused by mineral trioxide aggregate (MTA) in the presence of blood. Sixty extracted human anterior teeth were selected, with root lengths standardized to 10 mm and root canals shaped using Gates-Glidden drills #3 to #5. The samples were divided into six groups ( n = 10): Group 1 with no surface treatment and Groups 2 to 6 with Optibond universal adhesive and Neodymium yttrium aluminum garnet (Nd:YAG), Erbium yttrium aluminum garnet (Er:YAG), Erbium-chromium-yttrium-scandium-gallium-garnet (Er:Cr:YSGG), and diode laser applications, respectively...
February 22, 2024: Materials
https://read.qxmd.com/read/38472923/a-novel-molecularly-imprinted-quartz-crystal-microbalance-sensor-based-on-erbium-molybdate-incorporating-sulfur-doped-graphitic-carbon-nitride-for-dimethoate-determination-in-apple-juice-samples
#16
JOURNAL ARTICLE
Neslihan Özdemir, Betül Karslıoğlu, Bahar Bankoğlu Yola, Necip Atar, Mehmet Lütfi Yola
Dimethoate (DIM) as an organophosphorus pesticide is widely utilized especially in the cultivation of vegetables and fruits due to its killing effect on harmful insects. However, unconscious use of DIM in large amounts can also cause serious health problems. For these reasons, rapid and reliable detection of DIM from food samples is significant. In this study, a novel quartz crystal microbalance (QCM) sensor based on erbium molybdate incorporating sulfur-doped graphitic carbon nitride (EM/S-g-C3 N4 ) and a molecularly imprinting polymer (MIP) was designed for DIM detection in apple juice samples...
March 6, 2024: Foods (Basel, Switzerland)
https://read.qxmd.com/read/38449912/non-ablative-erbium-yag-and-neodymium-yag-laser-treatment-for-anal-incontinence-and-vaginal-atrophy-a-case-study
#17
Nobuo Okui, Tadashi Ikegami, C Tamer Erel
In this case study, a 68-year-old woman with anal incontinence (AI) and vaginal atrophy (VVA), who did not respond to traditional treatments such as pelvic floor exercises or hormone therapy, underwent three sessions of laser treatment using RenovaLase (SP Dynamis; Fotona d.o.o., Ljubljana, Slovenia), which employs non-ablative Erbium:YAG and Neodymium:YAG lasers. Significant improvements were observed in the VVA symptoms, with AI being resolved. The Vaginal Health Index Score increased from 7 points at the initial assessment to 18 points at 12 months after treatment...
March 2024: Curēus
https://read.qxmd.com/read/38449629/effect-of-erbium-yttrium-aluminium-garnet-laser-dentin-conditioning-on-dental-pulp-stem-cells-viability
#18
JOURNAL ARTICLE
Aryan Jafari, Mehdi Vatanpour, Nooshin Barikrow, Pouyan Razavi, Sohrab Tour Savadkouhi
OBJECTIVE: This study aims to investigate the effect of dentin conditioning by subablative Er:YAG (erbium-doped yttrium aluminium garnet) laser on dental pulp stem cells (DPSCs) viability. METHODS: For this in-vitro experimental study, root fragments were longitudinally hemisected after decoronation of single-rooted extracted teeth and preparation of root canals. Prepared samples were randomly assigned to 2 experimental groups (n = 17) as follows; 1) laser conditioning: irradiation with Er:YAG laser beams (2940 nm, 50 mJ per pulse, 20 Hz) 2) Chemical conditioning: 1...
March 15, 2024: Heliyon
https://read.qxmd.com/read/38439462/strip-loaded-waveguide-amplifiers-based-on-erbium-doped-nanocomposites-with-17%C3%A2-db-internal-net-gain
#19
JOURNAL ARTICLE
Siliang Tao, Hangyu Song, Dan Zhao, Yu Yang, Shuangshuang Wang, Jinming Yan, Jiashuo Wei, Xibin Wang, Guanshi Qin, Fei Wang, Daming Zhang
We propose a strip loaded amplifier employing SU-8 as the loaded waveguide and nanoparticles (NPs)-polymethyl methacrylate (PMMA) as the cladding layer. By leveraging the undoped SU-8 loaded waveguide, the polymer waveguide amplifier accomplished remarkably low transmission losses, reaching as low as 1.8 dB/cm at 1530 nm. We prepared NPs-PMMA nanocomposite by utilizing NaLu0.1 Y0.7 F4 : Er3+ , Yb3+ @NaLuF4 core-shell nanoparticles, which exhibited a significantly enhanced lifetime of 6.15 ms...
February 26, 2024: Optics Express
https://read.qxmd.com/read/38439434/m-type-refractive-index-profile-erbium-doped-fiber-for-high-efficiency-multicore-edfa
#20
JOURNAL ARTICLE
Zhimu Gu, Le He, Xiaoke Yin, Shaokun Liu, Wenzhen Li, Yingbin Xing, Nengli Dai, Jinyan Li
Cladding-pumped multicore erbium-doped fiber is an important element for future spatial division multiplexing (SDM) amplification. We propose an M-type erbium-doped multicore fiber to achieve high-efficiency SDM amplification. The performance of cladding-pumped erbium-doped fiber with a central refractive index depression has been investigated, and the M-type fiber has better amplification performance than conventional fibers by reducing the signal mode overlap with the doped region. The experiment results show that the M-type 4-core erbium-doped fiber has a gain improvement of 2...
February 26, 2024: Optics Express
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