5,947 research outputs found
Kinetic model of hyperbranched polymers formed in copolymerization of AB(2) monomers and multifunctional core molecules with various reactivities
No full textScreening of di-(2-ethylhexyl) phthalate-degrading microorganism and the optimization of biodegradation conditions.
No full text
Seroprevalence of rubella infection after national immunization program in Taiwan: vaccination status and immigration impact.
No full textPinworm Control and Risk Factors of Pinworm Infection among Primary-School Children in Taiwan
No full textMeasured impact of crooked traceroute
No full textData collected using traceroute-based algorithms underpins research into the Internet’s router-level topology, though it is possible to infer false links from this data. One source of false inference is the combination of per-flow load-balancing, in which more than one path is active from a given source to destination, and classic traceroute, which varies the UDP destination port number or ICMP checksum of successive probe packets, which can cause per-flow load-balancers to treat successive packets as distinct flows and forward them along different paths. Consequently, successive probe packets can solicit responses from unconnected routers, leading to the inference of false links. This paper examines the inaccuracies induced from such false inferences, both on macroscopic and ISP topology mapping. We collected macroscopic topology data to 365k destinations, with techniques that both do and do not try to capture load balancing phenomena.We then use alias resolution techniques to infer if a measurement artifact of classic traceroute induces a false router-level link. This technique detected that 2.71% and 0.76% of the links in our UDP and ICMP graphs were falsely inferred due to the presence of load-balancing. We conclude that most per-flow load-balancing does not induce false links when macroscopic topology is inferred using classic traceroute. The effect of false links on ISP topology mapping is possibly much worse, because the degrees of a tier-1 ISP’s routers derived from classic traceroute were inflated by a median factor of 2.9 as compared to those inferred with Paris traceroute
Characterization of glucose transport system in Drosophila Kc cells
No full textAbstractWe have characterized the glucose transport system in the Kc cells of Drosophila melanogaster. The transporter is stereospecific and can be inhibited by both cytochalasin B and phloretin, with ki, values of 4 μM and 30 μM for cytochalasin B and phloretin, respectively. Moreover, phloridzin does not affect uptake of glucose by Kc cells. Thus, on the basis of inhibitor studies, it appears that this insect cell line contains glucose transporters similar to those of the mammalian cells. However, probes prepared from rat transporter cDNAs showed no cross-hybridization with Drosophila RNA under moderately stringent conditions. Sugar selectivity has also been investigated by competition assay. The km values for d-glucose, 2-deoxy-d-glucose, d-fructose and d-galactose are 2 mM, 6 mM, 17 mM and 16 mM, respectively. The results indicate that this transporter prefers d-glucose and that it does not discriminate between d-galactose and d-fructose
In vivo insulin signaling in the myocardium of streptozotocin-diabetic rats: opposite effects of diabetes on insulin stimulation of glycogen synthase and c-Fos
No full text- …
