نتایج جستجو برای: native bacteria
تعداد نتایج: 279521 فیلتر نتایج به سال:
Can a heterotrophic organism be evolved to synthesize biomass from CO2 directly? So far, non-native carbon fixation in which biomass precursors are synthesized solely from CO2 has remained an elusive grand challenge. Here, we demonstrate how a combination of rational metabolic rewiring, recombinant expression, and laboratory evolution has led to the biosynthesis of sugars and other major biomas...
This study investigated the extent and nature of university students’ use of digital technologies for learning and socialising. The findings show that students use a limited range of mainly established technologies. Use of collaborative knowledge creation tools, virtual worlds, and social networking sites was low. ‘Digital natives’ and students of a technical discipline (Engineering) used more ...
This paper interrogates the currently pervasive discourse of the 'net generation' finding the concept of the 'digital native' especially problematic, both empirically and conceptually. We draw on a research project of South African higher education students' access to and use of Information and Communication Technologies (ICTs) to show that age is not a determining factor in students' digital l...
This article takes a critical look at three pervasive urban legends in education about the nature of learners, learning, and teaching and looks at what educational and psychological research has to say about them. The three legends can be seen as variations on one central theme, namely, that it is the learner who knows best and that she or he should be the controlling force in her or his learni...
Endocarditis due to Legionella spp. is uncommon but presumably underestimated given the prevalence of Legionellae in the environment. We report a first and unusual case of chronic native valve endocarditis due to L. anisa and advocate that the diagnosis of endocarditis be made collaboratively between the cardiologist, surgeon, microbiologist and pathologist.
This paper illustrates the use of WELSA adaptive educational system for the implementation of an Artificial Intelligence (AI) course which is individualized to the learning style of each student. Several issues are addressed throughout this paper: i) What similar approaches exist in the literature?; ii) How is the AI course created?; iii) What kind of personalization is provided in the course a...
Educational computer games are sometimes considered to be motivating per se – because of the playing activity and do not require further motivational strategies. Therefore the concept of ‘flow experience’ is commonly used to describe how smooth gaming naturally results in deep engagement and, consequently, enhanced learning. Learning with an instructional game without discovering the instructio...
bacteriorhodopsin operates as a light/proton transfer pump which converts the light energy into a proton gradient. energy stored in the proton gradient can be used in a variety of ways. bacteriorhodopsin producing sources are some halobacterium species such as halobacterium sodomense and halobacterium salinarum which continue to grow in harsh and salt-saturated conditions. two types of red pigm...
this study investigated metadiscourse and its subcategories in english research articles (ras) written by nonnative (iranian) and native english writers from the two disciplines of applied linguistics and civil engineering. the study aimed at seeing whether language and discipline influenced the frequency of occurrence of metadiscourse elements in research articles. to this end, a sample of 120...
Achromobacter xylosoxidans is a Gram-negative aerobic bacterium first described by Yabuuchi and Ohyama in 1971. A. xylosoxidans is frequently found in aquatic environments. Abdominal, urinary tract, ocular, pneumonia, meningitis, and osteomyelitis are the most common infections. Infective endocarditis is rare. As far as we know, until now, only 19 cases have been described, including this curre...
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