نتایج جستجو برای: turbidostat culture

تعداد نتایج: 277460  

Journal: :Cell 2003
Mariette R. Atkinson Michael A. Savageau Jesse T. Myers Alexander J. Ninfa

Analysis of the system design principles of signaling systems requires model systems where all components and regulatory interactions are known. Components of the Lac and Ntr systems were used to construct genetic circuits that display toggle switch or oscillatory behavior. Both devices contain an "activator module" consisting of a modified glnA promoter with lac operators, driving the expressi...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده ادبیات و زبانهای خارجی 1390

the present paper offers a postcolonial reading of two of the best novels by v. s. naipaul – half a life and the mimic men – in five chapters. the focus of this research is on different notions of postcolonial criticism and their application on the two novels as discussed from homi bhabha’s and frantz fanons points of view. having introduced the life and literary career of v. s. naipaul in th...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده علوم انسانی 1393

in this research the focus of the researcher is on the influence of american myths that have long been held and offered by the american culture and ideologies. sam shepard is conceived to be one of the greatest playwrights of the contemporary american theater. in his works he depicts broken characters who are struggling to keep up with the national expectations but are ceaselessly borne back to...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید چمران اهواز - دانشکده ادبیات و زبانهای خارجی 1394

résumé depuis la création de la culture écrite, il est rare quune œuvre soit dépourvue de reflet de la culture populaire dans ses diverses manifestations, y compris ladage et les proverbes. ceux-ci constituent les éléments clés de toute langue supportant le poids des traditions et des coutumes, lhistoire, le caractère et la vision dune nation. les proverbes français et persans touchant des élé...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده زبانهای خارجی 1391

théoriquement, lenseignement constitue, dans la relation didactique, un pôle symétrique à celui de lapprentissage. du point de vue du curriculum, lenseignement est généralement caractérisé comme le moyen par lequel le curriculum est mis en oeuvre. les progrès dans les connaissances psychologiques sur les phénomènes dappropriation ont montré quun savoir est véritablement approprié, cest-à-d...

2014
Hans C. Bernstein Allan Konopka Matthew R. Melnicki Eric A. Hill Leo A. Kucek Shuyi Zhang Gaozhong Shen Donald A. Bryant Alexander S. Beliaev

Synechococcus sp. PCC 7002 was grown to steady state in optically thin turbidostat cultures under conditions for which light quantity and quality was systematically varied by modulating the output of narrow-band LEDs. Cells were provided photons absorbed primarily by chlorophyll (680 nm) or phycocyanin (630 nm) as the organism was subjected to four distinct mono- and dichromatic regimes. During...

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