Main memory is a shared resource among cores in a chip and the speed gap between cores and main memory limits the total system performance. Thus, main memory should be effectively accessed by each core. Exploiting both parallelism and locality of main memory is the key to realize the efficient memory access. The parallelism between memory banks can hide the latency by pipelining memory accesses...

In this work, we address the problem of scalable video delivery to mobile users under varying buffering constraints on the user side to determine how channel variations affect the optimal delivery policy. Typically, buffering constraints dictate how much video data the consumer may cache on a local disk ahead of the playback instant, and have a marked impact on the optimal policy for retrieving...

Förster resonance energy transfer (FRET) from luminescent terbium complexes (LTC) as donors to semiconductor quantum dots (QDs) as acceptors allows extraordinary large FRET efficiencies due to the long Förster distances afforded. Moreover, time-gated detection permits an efficient suppression of autofluorescent background leading to sub-picomolar detection limits even within multiplexed detecti...

Three simple new visible spectrophotometric methods has been developed for determination of Losartan potassium and Omeprazole, in single component pharmaceutical dosage forms. The methods were based on the formation of ion-pair complexes of the drug with dye Bromocresol purple(BCP) and Bromophenol blue(BPB), in acidic buffer solutions followed by their extraction in chloroform. Experiments were...

Compression in column-oriented databases has been proven to offer both performance enhancements and reductions in storage consumption. This is especially true for read access as compressed data can directly be processed for query execution.Nevertheless, compression happens to be disadvantageous when it comes to write access due to unavoidable re-compression: write-access requires significantly ...

Nicotine is a potent chemical that excites the central nervous system and refreshes people. It is also physically addictive and causes dependence. To reduce the harm of tobacco products for smokers, a law was introduced that requires tobacco product containers to be marked with the amount of nicotine as well as tar. In this paper, an online stacking capillary electrophoresis (CE) method with ca...

We report a microfluidic device, using segmented flow in a two-phase system of immiscible liquids, which delivers aqueous droplets into a modified commercial mass spectrometer. The interface coupling the microfluidics to the mass spectrometer achieves up to 96% sample transfer efficiency to the vacuum chamber. Sample ionization is assisted by multipass infrared laser beam in the interface. The ...

Optimal delivery scheme for coded caching problems with small buffer sizes and the number of users no less than the amount of files in the server was proposed by Chen, Fan and Letaief [“Fundamental limits of caching: improved bounds for users with small buffers," IET Communications, 2016]. This scheme is referred to as the CFL scheme. In this paper, the link between the server and the users is ...

An HPLC method is described using octadecylsilica (3 microns) with an acetonitrile phosphate buffer mobile phase containing diethylamine which is capable of separating ketoconazole [(+/-)-cis-1-acetyl-4-(4[2-(dichlorophenyl)-2- (1H-imidazol-1-ylmethyl)-1,3-dioxolan-4-yl]methoxy]phenyl)pi perazine] from four related compounds, (R049223, R063600, R053165 and R039519) and from excipients in tablet...

Efficient, rapid, and reproducible procedures for isolating high-quality DNA before PCR gene amplification are essential for the diagnostic and molecular identification of pathogenic bacteria. This study evaluated the Qiagen QIAamp DNA Mini Kit and the Schleicher and Schuell IsoCode Stix DNA isolation device for isolating nucleic acid. Buffer, serum, and whole-blood samples were spiked with Bac...