Swainnymann0342

To assess the efficacy of intravenous recombinant tissue plasminogen activator (rt-PA) thrombolysis on clinical outcomes and risk of death in patients with acute cerebral infarction. Patients (n = 258) with acute cerebral infarction, treated within 4-5 h of the episode, were grouped according to whether intravenous thrombolysis was performed using rt-PA or not. Both groups received routine treatment for cerebral infarction, but the former received rt-PA intravenously at a dosage of 0.9 mg/kg. The National Institutes of Health Stroke Scale (NIHSS) score, clinical efficacy, and risk of bleeding and death were compared between the two groups. The NIHSS score and clinical effects for the rt-PA group were more favorable than those of its counterpart (P less then 0.05), though there was no significant difference in risk of an intracranial hemorrhage. The mortality rate for the rt-PA group was lower than that of the control group (P less then 0.05). Administration of intravenous rt-PA thrombolysis within 4.5 h of an acute cerebral infarction had a significant impact and did not increase risk of intracranial hemorrhage or death.To observe the effect of nano-artificial bone and bone marrow mesenchymal stem cells (BMSCs) in the treatment of femoral head osteonecrosis. The bilateral femoral head internal bone defect model was established and divided into three groups. Group A was used to make the defect without filling any material as the control, group B was only filled with nano-artificial bone, and group C was filled with composite materials of nano-artificial bone and bone marrow mesenchymal stem cells. The femoral head was examined using radiography and high-resolution focused 48-slice computed tomography (CT) at 12 weeks after implantation. A significant difference was found between groups B and C in the aspect of repairing the defect in osteogenesis of the femoral head as compared with the control group. Nano-collagen-based bone has strong osteogenic and osteogenic effects and is a good graft material for repairing bone defects of the femoral head. The use of bone marrow mesenchymal stem cells can promote the repair of bone defects, which is of great value in the treatment of osteonecrosis of the femoral head.To explore the possibility of using a specially functionalized nanoemulsion for the removal of free radical, resveratrol and phenethyl resorcinol were employed to form resveratrol/phenethyl resorcinol mixed active components, and the removal efficiency of free radicals was evaluated. Original nanoemulsion and specially functionalized-nanoemulsion were characterized by DLS and EPR. The free radical scavenging ability of the mixed active components of resveratrol/phenethyl resorcinol was determined as a function of the mass ratio of resveratrol to phenethyl resorcinol, temperature, and ionic strength. In the results, the removal of free radicals by the resveratrol/phenethyl resorcinol nanoemulsion system was found to be more effective than the nanoemulsion alone. At a higher resveratrol ratio, more than 68% of free radicals could be removed. The efficiency was also found to increase with rising temperature. However, efficiency decreased with the increase in ionic strength. In conclusion, compared with conventional nanoemulsion, the combined utilization of nanoemulsion and the mixed active components of resveratrol/phenethyl resorcinol achieved better results for the removal of free radicals because of synergistic effect between nanoemulsion droplets and the mixed active components of resveratrol/phenethyl resorcinol, involving hydrophobic binding, hydrogen binding, and partitioning.The relationship between osteoporosis (OP) and knee osteoarthritis (OA) was studied using gold nanomaterial (GNP) contrast agent from the imaging and clinical perspectives. Patients were divided into the OA and OP comorbidity group (experimental), OA group (positive control), and OP group (negative control) and evaluated using the Lysholm knee joint score and traditional Chinese medicine syndrome score. Ionomycin in vivo Bone density was measured by parallel X-ray examination, magnetic resonance imaging examination, Recht classification, and arthroscopic Outerbridge classification. GNP contrast agents were used in the medical imaging tests. There were significant differences between the various factors compared between the experimental and positive control groups (P less then 0.05). The correlation analysis of the variables and bone mineral density in all patients showed a positive linear relationship (P less then 0.05). There was a positive correlation between OP and knee OA. GNP has good clinical value in medical imaging.The objective of this study was to examine anticoagulant effects of fucoidan sulfate grafted on a TiO₂ nano-film. Using silica sol as a film-forming binding agent and high-molecular-weight polyvinyl alcohol as a film-forming aid, a nano-TiO₂ film was produced by applying a bonding film-forming method. Photocatalytic performance and resistance to heat, corrosion, and aging were investigated. Using glutaraldehyde as a cross-linking agent, brown algal polysaccharide sulfate was grafted onto the surface of NH₃ plasma-treated nano-film. The effects of pH, reaction temperature, and reaction time on grafting effects of nano-film are discussed. XPS was used to analyze chemical elements on the surface of nano-film, and partial thromboplastin time (APTT), thromboplastin time (PT), and thrombin time (TT) were used to evaluate anticoagulant activity of the graft nano-film In Vitro. The TiO₂ nano-film showed excellent resistance to heat, water, corrosion, and aging, and produced good interfacial adhesion performance. The grafting process optimum occurred at pH 2, 40 °C, and a reaction time of 6 h. Under these conditions, the optimal value of grafted silk fibroin membrane APTT was 72 s, and coagulation time of APTT and TT was increased by 37 s and 6 s, respectively, compared with the control, suggesting anticoagulant effects. Regarding stability, grafted fucoidan sulfate did not dissolve easily from the matrix; therefore, this product appears to be a promising novel biomaterial with effective anticoagulant properties.In this report, emplectite (CuBiS₂) semiconductor has been deposited on mesoporous TiO₂ using gas-solid reaction method. For the first time, CuCl₂ and BiCl₃ are solution-coated on mesoporous TiO₂ films, and thereafter reacted with H₂S gas in an H₂S atmosphere. The CuBiS₂ film is further confirmed using X-ray diffraction; thus, demonstrating the pure phase of CuBiS₂. CuBiS₂ film shows high spectral absorption with an energy gap (Eg) of 2.18 eV. Furthermore, devices have a structure consisting of FTO/compact-TiO₂/mesoporous-TiO₂/CuBiS₂/P3HT/Ag have been fabricated and hence exhibit high photoresponse performance.A thin, clean pristine Au film created in a transmission electron microscope chamber was tailored by an electron beam. Various kinds of nanopatterns, including hexagonal holes and dumbbell-like patterns, were fabricated by different doses of the electron beam. A high-quality series of in situ images were recorded to explore the irradiation mechanism. The electron-matter collision enabled the electron beam to act as a tweezer to arrange atoms into a specified pattern.The study presents a novel molten salt assisted autocombustion synthesis of SrFe 12-x Al x O19 particles. The extrinsic magnetic properties such as coercivity and the remanence of sintered M-type ferrites are highly dependent on the microstructure viz. morphology and size, of the ferrite particles. The control of the microstructures of ferrite particles is usually achieved via control nucleation and grain growth process. In this study, NaCl salt was used to control the crystal shape and size of Al3+ doped SrFe 12-x Al x O19 particles. The presented novel method couples advantage of deriving homogenized particles via auctocombustion first and later sintering in the presence of NaCl salt. Highly dispersed, homogeneous, and hexagonal shaped SrFe 12-x Al x O19 ferrite particles were achieved with this method. The particles derived via the molten salt assisted method presented a high coercivity and squareness ratio (>0.5) as compared to that obtained via autocombustion method only.Nano silver is widely used in the treatment of burn wounds globally, but most clinical studies on the efficacy of the treatment are small-sample randomized controlled studies. Hence, we aimed to systematically evaluate the efficacy of nano silver and sulfadiazine silver for the treatment of burn wounds through meta-analysis of multiple small studies. Randomized controlled trials were collected from the published literature to compare the effects of nano silver application and sulfadiazine silver application on burns. After evaluating the quality of the methodology and extracting the data from each study, we used RevMan 5.1 software to conduct meta-analysis on eight randomized controlled trials which encompassed 513 patients with second degree burns. The results of the meta-analysis showed that the wound healing time of the nano silver treatment group was less than that of sulfadiazine silver group (P less then 0.001) but the wound healing rate of nano silver treatment group was not significantly different from that of control group on the 15th day (MD = 7.10; 95% P = 0.14). Compared with the sulfadiazine silver treatment group, the difference between the nano silver treatment group and sulfadiazine silver treatment group was significant in reducing the pain of burn wounds (P less then 0.001). This suggests that the application of nano silver can promote the healing of burn wounds compared with sulfadiazine silver and has considerable advantages in relieving the pain intensity of burn wounds. However, these conclusions need to be further confirmed by a large sample in a high-quality randomized controlled study.Despite the fact that stability is a critical issue affecting halide perovskite after the materials have been developed, these materials continue to be studied due to their outstanding optoelectronic characteristics such as narrow emission band width, high PLQY. Many methods are suggested and improved, but the limitations for the display and lighting applications are still remaining. Here, we propose the fabrication of stable cesium lead tri-halide (CsPbX₃; X= Cl, Br, I) perovskite films using photocurable polyurethane material, norland optical adhesive 63 (NOA 63), to generate white LEDs by placing films on the InGaN 450 nm blue chip. Comparing with the conventional perovskites, fabricated films well maintained the luminescence properties such as full widths at half maximum (FWHM) of 18 nm and 31 nm for green and red films, respectively. For the stability issue, pristine perovskite without encapsulation is decomposed immediately at high humidity and temperature, but NOA 63 encapsulated perovskite maintained a PL emission property of 60% after four hours in artificial atmosphere. The CIE color triangle reached ~119% of the NTSC standard, exhibiting high color purity. From the results, we confirm that the NOA 63 encapsulated halide perovskites are beneficial when applied in optoelectronic applications due to their improved stability and maintained characteristics.