Surface enhanced Raman scattering (SERS) investigation and sensitive detection of zinc oxide nanorods (ZnO Nrds) deposited on silver nanoparticles (Ag NPs) substrate

We reported a simple method to fabricate SERS active substrate composed of Ag NPs where ZnO Nrds was chosen as the probe molecule. Ag NPs and ZnO Nrds were synthesized separately by polyol and hydrothermal method, respectively. Subsequently, we have deposited a roughened surface made of Ag NPs on glass by spin coating. Morphology, phase composition and optical properties of Ag NPs and ZnO Nrds are characterized by Transition Electron Microscopy (TEM), Scanning Electron Microscopy (SEM), X-Ray Diffraction XRD, Raman and Uv–vis Spectroscopy. An amplification of the SERS intensity by an order more than 4.5 times was observed. The responses demonstrated the capability of Ag NPs SERS substrate to be used for detection of heavy metal oxide compounds. Due to the formation of interfacial electric field between Ag NPs and ZnO Nrds, the mechanism of SERS enhancement was discussed.
Source: Materials Letters - Category: Materials Science Source Type: research

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ConclusionIP is a diagnosis of exclusion which should only be made after surgical and non-surgical causes have been outruled. In the absence of signs of peritonitis and evidence of gastrointestinal perforation on CT, a conservative approach is warranted, allowing patients to avoid unnecessary surgical intervention.
Source: International Journal of Surgery Case Reports - Category: Surgery Source Type: research
CONCLUSIONTc-99 m SC SPECT-CT is a novel helper used to assess the differential liver function after Y90 radioembolization of HCC and before segmentectomy and lobectomy of the liver.
Source: International Journal of Surgery Case Reports - Category: Surgery Source Type: research
Authors: Bilezikian JP, Hattersley G, Mitlak BH, Hu MY, Fitzpatrick LA, Dabrowski C, Miller PD, Papapoulos SE Abstract Objective: To evaluate, post hoc, the efficacy and safety of abaloparatide by degree of renal impairment. Methods: ACTIVE was a phase 3, 18-month, randomized, double-blind, active-comparator, placebo-controlled study of postmenopausal women with osteoporosis who received subcutaneous abaloparatide 80 µg, placebo, or open-label teriparatide 20 µg daily. Patients with serum creatinine>2.0 mg/dL or 1.5-2.0 mg/dL with an estimated glomerular filtration rate (eGFR)
Source: Current Medical Research and Opinion - Category: Research Tags: Curr Med Res Opin Source Type: research
Publication date: Available online 18 August 2019Source: Journal of Materials Research and TechnologyAuthor(s): S. Padmapriya, S. HarinipriyaAbstractPolypyrrole(Ppy) synthesized by wet chemical method using FeCl3 and (NH4)2S2O8 as oxidants were subjected to analysis by Scanning Electron Microscopy, X-ray diffraction, UV-visible spectroscopy, Differential scanning calorimetry, Raman and 1HNMR techniques. Electrochemical analysis such as cyclic voltammetry, linear sweep voltammetry and impedance spectroscopy of Ppy were performed. Charge/Discharge studies in 0.01 M NaOH showed hydrogen storage capacity of PpyFeCl3 and PpyA...
Source: Journal of Materials Research and Technology - Category: Materials Science Source Type: research
Publication date: Available online 18 August 2019Source: Journal of Materials Research and TechnologyAuthor(s): Ruby Aslam, Mohammad Mobin, Jeenat Aslam, Hassane Lgaz, Ill-Min ChungAbstractThe aim of this paper is to study the anticorrosive performance of the polymer–surfactants system comprising of mixed solutions of varying concentrations (10–700 ppm) of sodium salt of carboxymethylcellulose (NaCMC) and fixed concentration (1 ppm) of synthesized oppositely charged biodegradable cationic di-ester bonded gemini surfactants i.e., ethane-1,2-diylbis(N,N-dimethyl-N-alkylammoniumacetoxy)dichloride, referred as ...
Source: Journal of Materials Research and Technology - Category: Materials Science Source Type: research
Publication date: Available online 17 August 2019Source: NeuroImageAuthor(s): Dorelle C. Hinton, Alexander Thiel, Jean-Paul Soucy, Laurent Bouyer, Caroline PaquetteAbstractWhen walking on a split-belt treadmill, where each leg is driven at a different speed, a temporary change is made to the typical steady-state walking pattern. The exact ways in which the brain controls these temporary changes to walking are still unknown. Ten young adults (23±3y) walked on a split-belt treadmill for 30 min on 2 separate occasions: tied-belt control with both belts at comfortable walking speed, and continuous adjustment where spe...
Source: NeuroImage - Category: Neuroscience Source Type: research
Publication date: Available online 17 August 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Yancheng Wang, Xin Wu, Deqing Mei, Lingfeng Zhu, Jianing ChenAbstractDistributed tactile information sensing is crucial for the stable grasping and manipulation of intelligent robotics. This paper presents a flexible tactile sensor array with spatial resolution of 3.5 mm that can be easily worn on the robotic hand for distributed three-axis contact force sensing in grasping applications. The proposed tactile sensor array has 3 × 3 sensing units, each unit has a five-electrode pattern’s desig...
Source: Sensors and Actuators A: Physical - Category: Physics Source Type: research
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Source: Results in Physics - Category: Physics Source Type: research
Authors: Abdellatif AAH Abstract Numerous normal and tumors cells are well-known to express the somatostatin receptors (SSTRs) on their surface which make the receptor be useful for tumor scintigraphy. Thus, identification of SSTRs is beneficial, especially SSTR2. The somatostatin analogue, Octreotide (OCT) was chosen as a ligand, as it is known to selectively bind to SSTR2. Moreover, polyethylene glycol (PEG), 8armPEG was used as a branched PEG to provide a low non-specific cell binding and easily chemical modification. OCT, and fluorescein (Flu) were conjugated to branched PEG using a water-soluble carbodiimide (...
Source: Drug Development and Industrial Pharmacy - Category: Drugs & Pharmacology Tags: Drug Dev Ind Pharm Source Type: research
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Source: Ocular Immunology and Inflammation - Category: Allergy & Immunology Tags: Ocul Immunol Inflamm Source Type: research
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