Search results for "ENDOR"
showing 10 items of 114 documents
Factorizations of the Fibonacci Infinite Word
2015
The aim of this note is to survey the factorizations of the Fibonacci infinite word that make use of the Fibonacci words and other related words, and to show that all these factorizations can be easily derived in sequence starting from elementary properties of the Fibonacci numbers.
A preliminary study of agility in business and production - Cases of early-stage hardware startups
2018
[Context] Advancement in technologies, popularity of small-batch manufacturing and the recent trend of investing in hardware startups are among the factors leading to the rise of hardware startups nowadays. It is essential for hardware startups, companies that involve both software and hardware development, to be not only agile to develop their business but also efficient to develop the right products. [Objective] We investigate how hardware startups achieve agility when developing their products in early stages. [Methods] A qualitative research is conducted with data from 20 hardware startups. [Result] Preliminary results show that agile development is known to hardware entrepreneurs, howe…
Interneta mediju “Delfi” un “Tvnet” “Facebook” komentāru sadaļas vide un šo interneta mediju loma tās rediģēšanā un apsekošanā: kara Ukrainā gadījums
2022
Bakalaura darba mērķis ir izpētīt interneta mediju “Delfi” un “Tvnet” “Facebook” komentāru sadaļu vidi, noskaidrojot, ar kādiem paņēmieniem interneta mediju “Delfi” un “Tvnet” darbinieki apseko sava medija “Facebook” komentāru sadaļu laika posmā no 2022. gada 24. februārim līdz 2022. gada 10. martam. Mērķa sasniegšanai ir izvirzīti trīs pētnieciskie jautājumi, uz kuriem atbildes tiks atrastas, pielietojot teorētisko bāzi, kurā tiks izpētīta masu komunikācijas teorija, sociālo mediju darbības pamatprincipi un ietekme uz tradicionālo žurnālistiku, masu mediju auditorija un komentāru vide, vārda brīvība likumā un tās pielietojums žurnālistikā, kā arī empīriskajā daļā tiks veikta mediju “Delfi”…
“Vendor-Affected” WLAN experimental results: A Pandora’s Box?
2008
Experimental results are typically envisioned as the ultimate validation reference for any theoretical and/or simulation modelling assumptions. However, in the case of Wireless LANs, the situation is not nearly as straightforward as it might seem. In this paper, we discuss to what (large) extent measurement results may depend on proprietary undocumented algorithms implemented in the vendor-specific card/driver employed. Specifically, we focus on the experimental study of IEEE 802.11 b/g outdoor links based on the widely used Atheros/MADWiFi card/driver pair. We show that unexpected performance divergences do emerge in two classes of comparative experiments run on a same outdoor link: broadc…
Homologies Between Different Forms of 2-5A Synthetases
1994
(2′-5′) Oligoadenylate synthetases (2-5A synthetases; EC 2.7.7.19) are present in mammalian cells and tissues and synthesize from ATP a series of oligomers termed 2-5A [general formula: ppp(A2′p)nA; with 1 ≤ n < 18 and usually 1 ≤ n < 6] (Hovanessian 1991). For full enzymic activity of the 2-5A synthetases, binding of double-stranded RNA is required (Sen 1982). Three principal 2-5A synthetase isoenzymes have been described with Mr’s of 40–46, 69, and 100 kDa (Chebath et al. 1987; Hovanessian et al. 1987, 1988). In the following they are classified as 2-5A synthetase I [Mr 40–46 000], II [Mr 69 000] and III [Mr 100 000]. All three isoforms are induced in cells by interferon (Cohen et al. 198…
Spontaneous Endoreduplication, Tetraploidy and Chromosome Breakage in Lymphocyte Cultures from Healthy Subjects
1984
SUMMARY42,703 metaphases of peripheral lymphocytes from 20 healthy subjects (10 women and 10 men) were examined in order to establish the frequency of endoreduplicated cells and of tetraploid cells without diplochromosomes. Frequencies were found to be 0.016% and 0.112%, respectively. The two sexes did not differ as to the frequency of tetraploid cells, with and without diplochromosomes (about 0.13% in either sex). In a total of 2,135 well spread metaphases examined, 26 cells (i.e. 1.2%) with chromosomal breaks were found. Again, no significant differences between the two sexes were found as to such chromosome abnormalities.
Topoisomerase II inhibition and high yield of endoreduplication induced by the flavonoids luteolin and quercetin
2006
Luteolin and quercetin are widely distributed plant flavonoids that possess a variety of chemical and biological activities, including free-radical scavenging and antioxidant activity. Recently, both flavonoids have been reported to inhibit DNA topoisomerases I and II (topo I and topo II), a property that, together with their ability to induce DNA and chromosome damage, has made them candidate anticancer compounds. In the present study, we confirmed that both compounds are topo II inhibitors by conducting a comparative study of their effect on topo II activity from Chinese hamster ovary AA8 cells. Because interference with the function of topo II to resolve DNA entanglement at the end of re…
Trattamento laparoscopico del megacolon agangliare
2007
Recent trends in surgery for Hirschsprung's disease have been toward early repair and fewer surgical stages. Laparoscopy can be used for colon pull-through even in neonates adding the advantages of a minimally invasive approach to those of the traditional technique. the personal experience in the use of laparoscopically assisted endorectal pull-through in the treatment of Hirschsprung's disease in reported. the advantages it offers are outlined, including excellent visualization of the operative field, accurate dissection of the bowel from pelvic structures, and minimally invasive abdominal wounds. Preliminary results show that laparoscopically assisted endorectal pull-through is one of the…
Sequence of lethal events in HeLa cells exposed to the G2 blocking cytolethal distending toxin
2000
The bacterial cytolethal distending toxin (CDT) was previously shown to block the cell cycle of several cell lines at stage G2 through inactivation of the cyclin-dependent kinase Cdkl and without induction of DNA strand breaks. In the present study, we have analyzed, using various methods of analytical cytometry, the progressive transformation and delayed lethal events in the tumor-derived HeLa cell line temporarily exposed to CDT. The cell proliferation arrest induced by CDT was irreversible but, starting about two days after exposure, the G2 block released partially, concomitantly with a decline in the level of Cdkl phosphorylation. This partial release resulted in endoreduplication, lead…
Dissecting the factors controlling seed development in the model legume Medicago truncatula
2012
Legumes are not only indispensible for sustainable agriculture but are also a rich source of protein in food and feed for humans and animals, respectively. However, major proteins stored in legume seeds are poor in sulfur-containing amino acids, and may be accompanied by anti-nutritional factors causing low protein digestibility problems. In this regard, Medicago truncatula serves as a model legume to study legume seed development especially the phase of seed storage protein accumulation. As developing legume seeds are complex structures, a thorough knowledge of the morphogenesis of the seed and the characterization of regulatory mechanisms underlying the embryo development and seed filling…