RESUMEN
The over usage plastics have possessed serious threat to the ecological system. Thus progressive advancement in fabricating biodegradable and renewable bioplastics is persuasively required to furnish an effective alternative to non-biodegradable plastics. In this view, the current work highlights the production of starch based bioplastic films using waste Colocasia esculenta (taro herb) as a viable starting precursor. The functional ability of developed taro starch based film was further modified by incorporating carbon dots (CQDs) fillers generated from the waste slurry produced during starch extraction from taro herbs. The optimization of films production was achieved by varying the CQDs amount (0.4 %, 0.8 %, 2 % and 4 % w/w) on taro-based films using casting technology. The data illustrates that the addition of CQDs has the ability to enhance the fluorescence property, mechanical properties (Tensile Strength 0.332-4.635 MPa, Elongation at break 42.45-547.63 %) and water resistance ability of films (Moisture content 15-6.4 %, Water Solubility 50-30 % Water Vapour Transmission Rate 2.0012-1.0054 g-2 h-1 and Water Contact Angle 40.6-89.6°). The developed films are found to be thermally stable. The formed films possessed anti-oxidative abilities which safeguard the film from oxidative attacks and ultimately protect the film from the external environment. The fluorescence nanosensor probe has further been developed by utilizing CQDs embedded in a starch-based bioplastic nanocomposite. The developed sensor displayed selective sensing ability towards Fe2+ ion with high sensitivity and accuracy in aqueous medium. Thus, the proposed sensor in this work offers a portable, efficient, low-cost, disposable, non-lethal, and eco-friendly nanosensor for on-site monitoring of metal ion for the food, beverage, and pharmaceutical industries. This is one of the primary reports where metal ions sensing is reported for Taro@CQDs nanocomposites based films. Our outcomes of this work hold significant relevance to providing a smart sensory and biodegradable probe for metal ion sensing by using waste resources, thus offering a better and sustainable alternative for environmental remediation applications.
RESUMEN
BACKGROUND: Alveolar bone loss can occur as a result of aggressive maneuvering due to iatrogenic trauma during teeth extraction or due to normal post-extraction socket healing. Tooth if used as a whole grafting material then successful osteoconductive remodeling can be expected because low-crystalline apatite is the main minerals in bone tissue. A study was conducted in the department of oral and maxillofacial surgery focused on the potential for osteoconduction, osteoinduction, and osteogenesis by growth factors in the tooth and related histogenesis between the tooth and bone. Radiographic evaluation of alveolar ridge preservation was performed using a 3D imaging technique as well as histologically using Autogenous fresh mineralized tooth graft prepared at the chairside. RESULTS: A total of 30 patients were included in the study. The data was subjected to statistical analysis and the comparison of quantitative data was done using paired t-test. CONCLUSION: The outcome of this study suggests that chair side autogenous tooth graft can be used for socket survival, sinus and ridge augmentation as it is less time consuming, easy to prepare, with lower bone resorption speed, osteoinduction, osteoconduction, osteogenetic properties, and excellent primary implant stability.
RESUMEN
Nowadays, cutaneous expansion is used progressively in reconstructive surgery for treating the variety of problems such as burns alopecia scar revision in children and adults. With the use of tissue expansion technique, the reconstruction of many acquired and congenital defects has been made possible. Tissue expanders are principally based on the mechanical and the biological creep in which mechanical creep is the morphological changes occurring in cellular level in response to applied stress and biological creep is the resultant expansion of skin surface. There is an excellent closure of extensive soft tissue defects without additional scars in donor area with tissue expanders as compared with other methods of plastic surgery the case report highlights the excellent results of tissue expander in an esthetically compromised patient due to hypotrophic scar on the forehead. This is a novel technique as it was performed under local anesthesia without the use of any sedation in a regular clinical setup.
RESUMEN
In the title compound, C20H17ClN2O2S, the dihedral angle between the planes of the benzo-thia-zole fused ring system (r.m.s. deviation = 0.024â Å) and the chloro-benzene ring is 89.62â (12)°. The ester C-O-C-C side chain has an anti orientation [torsion angle = -155.2â (3)°]. In the crystal, weak aromatic π-π stacking inter-actions are observed between the phenyl and pyrimidine rings [centroid-centroid seperation = 3.666â (2)â Å].