Superparamagnetic behavior of sulfonated fullerene (C60SO3H): Synthesis and characterization for biomedical applications

Publication date: Available online 20 September 2019Source: Materials Chemistry and PhysicsAuthor(s): P. Anto Christy, A. John Peter, S.Arumugam, Chang Woo Lee, P. Siva PrakashAbstractFullerenes were synthesized to form sulfonated fullerenes by novel less cost-effective manner using diethyl ether as solvent. The synthesized sulfonated fullerene was extensively characterized by UV–Vis, FT-IR, FT-RAMAN, XRD, SEM HRTEM, XPS, EPR and VSM. FT-IR characterization reveals the presence of functional SO3H groups and FT-Raman characterization confirms the symmetry of the molecule. UV–Vis spectral analysis endorses red shifting of absorption peak. EPR spectrum, at room temperature with g-factor values, indicates the paramagnetic nature and magnetic ion sites of the samples. Structural changes, in sulfonated fullerene, are observed through Scanning electron microscope (SEM) and High-resolution transmission electron microscope (HRTEM). HRTEM micrographs showed that the sulfonation improves the good dispersion of fullerene in water. X-ray photoelectron spectroscopy (XPS) and energy dispersive spectroscopy (EDX) confirm the presence of carbon, sulphur and oxygen element in the molecule. Magnetization studies were measured using a vibrating sample magnetometer (VSM). The sulfonated fullerene exhibited superparamagnetic (SPM) behaviour at 5K with saturation magnetization value (ms = 0.14 emu/g). The zero-field cooled (ZFC) curve exhibited a blocking temperature Tb which is clo...
Source: Materials Chemistry and Physics - Category: Materials Science Source Type: research

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Authors: Günal A, Pekçetin S, Demirtürk F, Şenol H, Håkansson C, Wagman P Abstract Background: Occupational balance (OB) is an important concept in occupational therapy and is considered as an essential component of health and well-being. Aim: The aim of this study was to investigate the validity and reliability of the Turkish version of the Occupational Balance Questionnaire-11 (OBQ11-T). Materials and methods: The OBQ11-T was administered to 116 individuals for construct validity analysis and to 58 individuals for reliability analysis. Validity was determined using explanatory and confirma...
Source: Scandinavian Journal of Occupational Therapy - Category: Occupational Health Tags: Scand J Occup Ther Source Type: research
Conclusion: MDCT provides good results in detecting sinus fat, venous invasion and kidney-confined tumors, but evaluation of perinephric fat remains a difficult task, leading to reduced accuracy in T3a staging. PMID: 31607203 [PubMed - as supplied by publisher]
Source: Scandinavian Journal of Urology - Category: Urology & Nephrology Tags: Scand J Urol Source Type: research
This study was aimed to estimate the length of the MIC in the interforaminal safe zone, to analyse its course in relation to the lingual and the buccal cortical plates of the mandible using cone beam computed tomography (CBCT) scans and to relate the above findings to age, gender, dental status and Malaysian races.MethodsRetrospective analysis of 100 CBCT scans (n = 200) was performed on both sides of the mandible. Cross-sectional and panoramic images were reconstructed. The length of the MIC and the horizontal distances between the MIC and the buccal and the lingual cortical plates were measured at the three...
Source: Journal of Maxillofacial and Oral Surgery - Category: ENT & OMF Source Type: research
Background From infancy to adulthood, the mandible develops increased ramus height, prominence of the chin, and laterally widened gonial angles. In Crouzon and Apert syndromes, both relative retrognathia and prognathic jaws have been reported. Growth is influenced by a variety of factors, including the growth and relative position of the skull base, functional coordination, and the spatial influence of the laryngopharynx. Thus, this study aimed to explore in detail the evolution of the mandible in both syndromes and its relationship with the entire facial structure and skull base. Methods One hundred twenty-three preo...
Source: Annals of Plastic Surgery - Category: Cosmetic Surgery Tags: Research Source Type: research
In this issue, Tang et al. [1] from Taiwan report on an increasingly important issue in thoracic medicine and surgery, the natural history of small, asymptomatic lung nodules. The widespread use, over the last couple of decades, of increasingly sensitive computed tomography (CT) scans with reducing radiation dose has resulted in the recognition of a significant population of otherwise healthy patients who have a lung nodule of undefined nature. In most cases, this lung nodule has been detected at the time of a CT scan for a completely different issue —atypical chest pain, back pain, shoulder pain, and often for inves...
Source: Heart, Lung and Circulation - Category: Cardiology Authors: Tags: Editorial Source Type: research
Publication date: Available online 14 October 2019Source: Materials Today CommunicationsAuthor(s): Marzie Farjami, Vahid Vatanpour, Abdolreza MoghadassiAbstractThe influence of various additives of PEG (with MW = 1000, 4000 g/mol), PVP (with MW = 10000, 29000 g/mol) and Pluronic F-17 on the attributes and performance of the EPVC and EPVC/boehmite nanocomposite membranes was studied. Water contact angle, scanning electron microscopy (SEM), atomic force microscopy (AFM) and energy dispersive X-ray (EDX) analyses and also the obtained results of pure water flux, bovine serum albumin (...
Source: Materials Today Communications - Category: Materials Science Source Type: research
Publication date: Available online 14 October 2019Source: Physics Letters BAuthor(s): He Liu, Feng-Tao Wang, Kai-Jia Sun, Jun Xu, Che Ming KoAbstractBased on the framework of an extended multiphase transport model with mean-field potentials in both the partonic phase and the hadronic phase, we explain the elliptic flow difference between π+ and π− in the beam-energy scan program at the relativistic heavy-ion collider by incorporating the vector-isovector potential for quarks and antiquarks with different isospins. It is found that the isospin splitting of pion elliptic flow favors a strong vector-isovector inte...
Source: Physics Letters B - Category: Physics Source Type: research
Publication date: Available online 15 October 2019Source: Journal of Bioscience and BioengineeringAuthor(s): Shaun N. Robertson, Peter G. Childs, Ayorinde Akinbobola, Fiona L. Henriquez, Gordon Ramage, Stuart Reid, William G. Mackay, Craig WilliamsBacterial biofilms pose a significant burden in both healthcare and industrial environments. With the limited effectiveness of current biofilm control strategies, novel or adjunctive methods in biofilm control are being actively pursued. Reported here, is the first evidence of the application of nanovibrational stimulation (nanokicking) to reduce the biofilm formation of Pseudomo...
Source: Journal of Bioscience and Bioengineering - Category: Biomedical Science Source Type: research
Publication date: Available online 14 October 2019Source: Sensors and Actuators B: ChemicalAuthor(s): Jing Tan, Shahid Hussain, Chuanxin Ge, Mingsong Wang, Sufaid Shah, Guiwu Liu, Guanjun QiaoAbstractUnique nanostructures of bimetallic organic materials assisted by new organic frameworks are promising candidates for gas sensor applications. For the first time, we successfully report the design and synthesis of Co3O4/NiCo2O4 double-shelled nanocages (DSNCs) via a facile template-assisted method. The DSNCs were characterized using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Te...
Source: Sensors and Actuators B: Chemical - Category: Chemistry Source Type: research
In conclusion, the as-fabricated PHMG-OCS-PVA fiber membrane may be used as a new sewage treatment membrane with superior anti-biofouling performance.Graphical abstract
Source: Reactive and Functional Polymers - Category: Chemistry Source Type: research
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