Purpose: The aim of this study was to evaluate the effect of oral microorganism on surface topography of acrylic resin denture base material. Materials and methods: Fifty rectangular plates of dimensions 30mm x 20mm x 1 mm were fabricated with heat polymerizing acrylic resin denture base material. an area of 10mm x 10 mm in the center of each acrylic plate was marked for evaluation of surface t...

1. A microorganism identical with that originally described by Anderson has been cultivated in pure strain from two additional cases of granuloma inguinale by means of inoculating the yolk of chick embryos with uncontaminated human tissue containing Donovan bodies. 2. The morphological and cultural characteristics of the three isolated strains are described and discussed. 3. This microorganism ...

This paper proposes a novel pixel interval down-sampling network (PID-Net) for dense tiny object (yeast cells) counting tasks with higher accuracy. The PID-Net is an end-to-end convolutional neural (CNN) model encoder–decoder architecture. operations are concatenated max-pooling to combine the sparse and features. addresses limitation of contour conglutination objects while counting. evaluation...

Undernutrition or malnutrition adversely affects host defenses against many invading microorganisms, thereby increasing the severity of infection. Studies of RNA viruses (e.g., coxsackievirus B and influenzavirus) have shown that selenium or vitamin E deficiency in mice increases disease severity and results in stable genomic changes in the virus that increase virulence. Changes in H3N2 influen...

This project focuses on the development of a microorganism concentrator for pathogen detection applications. A common problem in microfluidic systems is the mismatch between the volume of a sample and the volume that a device, such as a detector, can process in a reasonable amount of time. Concentrators can, therefore, be used in pathogen detection and other microfluidics applications to reduce...

The impacts of UV irradiation, gamma irradiation, and a combination of both on Escherichia coli inactivation in primary and secondary wastewater effluents were investigated. UV doses of 35 and 62 J/m(2) were required for a 1-log inactivation of E. coli in the primary and secondary wastewater samples, respectively. A gamma dose of 170 Gy (J/kg) was required for a 1-log inactivation of E. coli in...

In the past, a wide variety of unrelated oral filamentous and rod shaped bacteria were placed either in the genera Leptothrix or Leptotrichia. The confusion resulted from meager studies of many of these organisms, inadequate generic descriptions, and use of the ill-defined word "filamentous." Bergey's Manual of Determinative Bacteriology in 1948 stated, "the genus Leptotrichia Trevisan, 1879 is...

The purpose of this research stream is to evaluate the kinetics of bacterial strains of Pseudomonas aeruginosa, to establish the influence of UV doses on the kinetics of disinfection, to study UV-resistant strains of Pseudomonas aeruginosa, and to underline the influence of suspended solids on the inactivation kinetics of these strains. Furthermore, and due to the lack of readily available info...

Animal gastrointestinal tract contains a complex community of microbes, whose composition ultimately reflects the co-evolution of microorganisms with their animal host. The gut microbial community of humans and animals has received significant attention from researchers because of its association with health and disease. The application of metagenomics technology enables researchers to study no...

The aim of this study was to evaluate in vitro the duration of the antimicrobial effect of endodontic sealers by means of the Direct Contact Test. The sealers tested were: Endomethasone - Septodont, Endomethasone C-Septodont, Endion-Voco, Diaket-ESPE, Pulp Canal Sealer-SybronEndo, and AH26-Dentsply DeTrey. The endodontopathic microorganisms (MO) confronted were: Staphylococcus aureus (Sa), Cand...