ABSTRACT
Solar-driven photocatalysis has shown great potential as a sustainable wastewater treatment technology that utilizes clean solar energy for pollutant degradation. Consequently, much attention is being paid to the development of new, efficient and low-cost photocatalyst materials. In this study, we report the photocatalytic activity of NH4V4O10 (NVO) and its composite with rGO (NVO/rGO). Samples were synthesized via a facile one-pot hydrothermal method and successfully characterized using XRD, FTIR, Raman, XPS, XAS, TG-MS, SEM, TEM, N2 adsorption, PL and UVâvis DRS. The results indicate that the obtained NVO and NVO/rGO photocatalysts exhibited efficient absorption in the visible wavelength region, a high content of V4+ surface species and a well-developed surface area. Such features resulted in excellent performance in methylene blue photodegradation under simulated solar light illumination. In addition, the composite of NH4V4O10 with rGO accelerates the photooxidation of the dye and is beneficial for photocatalyst reusability. Moreover, it was shown that the NVO/rGO composite can be successfully used not only for the photooxidation of organic pollution but also for the photoreduction of inorganic pollutants such as Cr(VI). Finally, an active species trapping experiment was conducted, and the photodegradation mechanism was discussed.
ABSTRACT
Three cases of accessory parotid gland lesions are reported. The literature concerning accessory gland disease and its diagnosis and treatment is reviewed.
Subject(s)
Adenoma, Pleomorphic/pathology , Parotid Diseases/pathology , Parotid Neoplasms/pathology , Sialadenitis/pathology , Adult , Carcinoma, Acinar Cell , Diagnosis, Differential , Female , Humans , Male , Middle AgedSubject(s)
Synovial Cyst/diagnosis , Temporomandibular Joint Disorders/diagnosis , Female , Humans , Middle Aged , Radiography , Synovial Cyst/pathology , Synovial Cyst/surgery , Temporomandibular Joint/diagnostic imaging , Temporomandibular Joint/pathology , Temporomandibular Joint/surgery , Temporomandibular Joint Disorders/pathology , Temporomandibular Joint Disorders/surgery , Terminology as TopicABSTRACT
Descrevem-se as características das hemácias A3 com métodos convencionais e ulteriores testes com lectinas vegetais e de caramujos. Dos três indivíduos estudados, Mulato Claro, dois nasceram em Pernambuco e um no Rio de Janeiro. A separaçäo das hemácias A3 sugere uma mistura de, pelo menos, duas populaçöes de células com aglutinabilidade variável do antígeno A. Uma análise da literatura permitiu estimar que a maior freqüência de A3 encontrou-se em Negroides, um valor intermedio em Caucasoides e a menor prevalência em pessoas do Estado de Maharashtra na India
Subject(s)
Humans , Male , ABO Blood-Group System/genetics , Ethnicity , PhenotypeABSTRACT
The efficiency of plating of Escherichia coli K12 and its derivatives K12 C600 and K12 C600(lambda) is diminished during the transition period from the lag of the exponential growth phase in cultures grown in tryptone broth. The phenomenon is suppressed in cultures of the strain K12 C600(lambda ind). The reduction in the efficiency of plating is transitory and not influenced by temperature between 30 and 42 degrees C.
