objective: traditional methods for storing microbial dna samples use the low-temperatures of 4 °c, -20°c or -80 °c. the dbc card is a new method of storing microbial dna at room temperature. this study evaluates the stability and determine the best storing method of bacterial dna on the dbc card. methods: in this study, we used a pair of primers from the conserved domain of 16srrna designed to...

The aromatic N-heterocyclic 7H-dibenzo(c,g)carbazole (DBC), like polynuclear aromatic hydrocarbons, is a potent inducer of local sarcomas, papillomas, and respiratory tumors, but unlike such compounds it also induces hepatomas. The N-methyl derivative of DBC, N-methyl-dibenzo(c,g)carbazole (MeDBC), also induces sarcomas, papillomas, and respiratory tumors but at a lower frequency than DBC. Howe...

We present the Distributed Batch Controller (DBC), a system built to support batch processing of large scientiic datasets. The DBC implements a federation of autonomous workstation pools, which may be widely-distributed. Individual batch jobs are executed using idle workstations in these pools. Input data are staged to the pool before processing begins. We describe the architecture and implemen...

BACKGROUND AND STUDY AIMS  Dye-based chromoendoscopy (DBC) is the preferred method for endoscopic dysplasia surveillance in patients with inflammatory bowel disease (IBD). We sought to examine the uptake of, and perception toward DBC among academic gastroenterologists. METHODS  We conducted an online survey of academic members of the Canadian Association of Gastroenterology to assess their cu...

Design contracts can be used in software development to ensure the preservation of assertions for program correctness. This can increase reliability in software design. Design by ContractTM (DBC) was developed by Bertrand Meyer and is supported by the Eiffel programming language. Eiffel provides support for checking preconditions, postconditions, and class invariants automatically at runtime. E...

Breakfast is often considered the most important meal of the day and children and adolescents can benefit from breakfast consumption in several ways. The purpose of the present study was to describe trends in daily breakfast consumption (DBC) among adolescents across 31 countries participating in the HBSC survey between 2002 to 2010 and to identify socio-demographic (gender, family affluence an...

Design by Contract (DbC) is a programming methodology in which the meaning of program entities, such as methods and classes, is made explicit by the use of programming predicates named assertions. A false assertion is always a manifestation of an incorrect program. This simple founding idea, when properly applied, give programmers a tool able to specify, test, debug, document programs, as well ...

Pyrogenic carbon, also called black carbon (BC), is an important component in the global carbon cycle. BC produced by biomass burning or fossil fuel combustion is transported to oceans by the atmosphere or rivers. However, environmental dynamics (i.e., major sources and sinks) of BC in marine environments have not been well-documented. In this study, dissolved BC (DBC) collected from surface wa...

The Distributed Batch Controller DBC supports scienti c batch data processing The DBC dis tributes batch jobs to one or more pools of workstations and monitors and controls their execution The pools themselves may be geographically distributed and need not be dedicated to process ing batch jobs We describe the use of the DBC in a large scienti c data processing application namely the generation...

Rivers annually carry 25–28 Tg carbon in the form of pyrogenic dissolved organic matter (dissolved black carbon, DBC) into the ocean, which is equivalent to about 10% of the entire riverine land-ocean flux of dissolved organic carbon (DOC). The objective of this study was to identify the main processes behind the release and turnover of DBC on a riverine catchment scale. As a model system, we c...