Sonochemical synthesis of perovskite-type barium titanate nanoparticles decorated on reduced graphene oxide nanosheets as an effective electrode material for the rapid determination of ractopamine in meat samples.
Sonochemical synthesis of perovskite-type barium titanate nanoparticles decorated on reduced graphene oxide nanosheets as an effective electrode material for the rapid determination of ractopamine in meat samples. Ultrason Sonochem. 2019 Sep;56:318-326 Authors: Muthumariyappan A, Rajaji U, Chen SM, Baskaran N, Chen TW, Jothi Ramalingam R Abstract A simple and facile ultrasound based sonochemical method to incorporate Perovskite-type barium titanate (BaTiO3) nanoparticles inside the layered and reduced graphene oxide sheets (rGOs) is reported. BaTiO3@rGOs nanocomposite was characterized by FESEM, HRTEM, EDX, mapping, XRD, XPS and EIS. The results show that the decoration and also incorporation of BaTiO3 nanoparticles in the multi-layered and ultrasound reduced graphene oxide matrix. Non-enzymatic and differential pulse voltammetric sensor of ractopamine (food toxic) based on the BaTiO3@rGOs nanocomposite modified screen printed carbon electrode is developed. Compared with the original BaTiO3/SPCE and rGOs/SPCE, the BaTiO3@rGOs/SPCE displays excellent current response towards ractopamine and gives linearity in the range of 0.01-527.19 µM ractopamine in neutral phosphate buffer (pH 7.0). The BaTiO3@rGOs nanocomposite modified sensor also exhibits valuable ability of anti-interference to electroactive analytes. Furthermore, the as-prepared BaTiO3 NPs@rGOs/SPCE has been applied to the determination of ractopamine in pork and chicken samples. PMID...
Conclusion: Preoperative systematic staging by EBUS-TBNA of early lung cancer can reduce postoperative upstaging. Sensitivity for detection of radiologically occult mediastinal metastases seems lower than selective sampling of pathologic lymph nodes. Verification of negative results by mediastinoscopy in selected cases remains of value.
This study compares the safety, pain level, and time involved in these techniques. Methods: We randomized 100 patients receiving ultrasound-guided unilateral thoracentesis in an academic medical center from December 2015 through September 2017 to either vacuum or manual drainage. Without using pleural manometry, the effusion was drained completely or until the development of refractory symptoms. Measurements included self-reported pain before and during the procedure (from 0 to 10), time for completion of drainage, and volume removed. Primary outcomes were rates of all-cause complications and of early termination of the...
Conclusion: Our study demonstrates a 100% negative predictive value for the exclusion of PTX via TUS’ verification of SL. The practical value of TUS post-TBLCB may lie in its application as a rule-out study, thereby avoiding CXR.
Conclusion: EBUS-elastography is feasible during EBUS and may be helpful in predicting malignant lymph node infiltration. It could improve anatomopathologic sample collection and increase diagnostic efficiency.
Conclusion: Elastography does not preclude performing TBNA of the lymph nodes. It does not preclude EBUS-TBNA when a type 1 elastogram pattern is found. All lymph nodes visualized should be sampled by EBUS-TBNA, regardless of elastography pattern.
Conclusion: EBUS-TBNA is a useful investigation in the diagnostic algorithm of suspected lymphoma as it helps avoid other invasive diagnostic procedures. The sensitivity of EBUS-TBNA in subtyping new-onset mediastinal lymphoma depends on the adequacy of cell aspirate and the judicious utilization of pathologic techniques.
Conclusion: EBUS-TBNA using either capillary sampling or complete stylet removal are effective and has a high proportion of satisfactory results for ancillary testing.
Conclusion: NUS and needle sampling of cervical lymph nodes is a potential modality that can be used for the diagnosis of sarcoidosis in a selected group of patients.
ConclusionConception and safe, full-term pregnancy is achievable following Lap-RFA of symptomatic fibroids. Additional large, rigorous, multivariate prospective studies that adjust for confounders and report pregnancy outcomes following symptomatic fibroid treatment are needed.
Introduction: Previous studies observed diurnal variation in hemodynamic responses during recovery from whole-body exercise, with vasodilation appearing greater after evening versus morning sessions. It is unclear what mechanism(s) underlie this response. Since small muscle-mass exercise can isolate peripheral effects related to postexercise vasodilation, it may provide insight into possible mechanisms behind this diurnal variation. Methods: The study was conducted in ten healthy (5F, 5M) young individuals, following single-leg dynamic knee-extension exercise performed in the Morning (7:30-11:30am) or the Evening (5-9pm)...