In this paper, helium plasma jets are used for water activation to explore the production mechanism of H2O2 in the water. Either positive or negative DC voltage is used for the plasma excitation. It is found that the concentration of aqueous H2O2 induced by the positive plasma jet is ~4 times larger than that by the negative plasma jet with similar average discharge current. Three production pathways of aqueous H2O2 are considered important in literature, including the electrolysis, the dissolution of gaseous H2O2, and the combination of aqueous OH. However, the first two pathways are found to have similar contributions on H2O2 production for the positive and negative plasma jets. It is deduced that the OH combination in the surface layer of the plasma-activated water is most responsible for the concentration difference of aqueous H2O2 between the two plasma jets.

Background: To retrospectively investigate the clinical characteristics, initial treatment, relapse, therapy outcome, and prognosis of Chinese patients with primary testicular lymphoma (PTL) through analysis of the cases of our institute. Methods: From December 2008 to July 2018, all patients with PTL were included in this study. Kaplan-Meier method was used to estimate PFS and OS. The Cox proportional hazards model was used to compare the survival times for groups of patients differing in terms of clinical and laboratory parameters. Results: All 28 PTL patients (24 DLBCL, three NK/T lymphomas, and one Burkkit's lymphoma) with a median age of 65.5 years were included in this study. Six patients were observed recurrence among all the 22 individuals evaluated. Following orchiectomy and systemic chemotherapy, with or without intrathecal prophylaxis, complete response was achieved in 15 (68%) patients. For DLBCL patients, the median progression-free survival (PFS) was 44.63 months (95% CI 17.71-71.56 months), and the median overall survival (OS) was 77.02 months (95% CI, 57.35-96.69 months). For all the DLBCL patients, the 5-year PFS and 5-year OS were 35.4% (95%CI, 14.8-56.0%) and 53.4% (95%CI, 30.1-76.7%). Without further chemotherapy following orchiectomy (HR = 3.4, P = 0.03) were associated with inferior PFS of DLBCL patients. Advanced Ann Arbor stage (HR =5.9, P = 0.009) and high (international prognostic index, IPI) score: 3-5 (HR =3.9, P = 0.04) were correlated with shorter OS of DLBCL patients. Conclusion: This study confirms that PTL is an aggressive malignant with a poor prognosis. Limited Ann Arbor stage, further chemotherapy following orchiectomy, and low IPI score (less than 2) are correlated with superior survival for DLBCL patients.

No abstract

KH550 organic modified MMT was incorporated into PCL to enhance the interfacial bonding and restricted the movement of PCL molecular chains in galleries through the interlayer locking effect.