Zhengyi Zhang

2Stefan Strauf
2Ibrahim Sarpkaya
2William Walden-Newman
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Based on POJ (PKU Judge Online), an online judge system for ACM/ICPC in Peking University, we develop a system called Programming Grid (PG), which is aimed at computer-aided education (CAE) for programming courses. PG is a course-centered system for CAE, while POJ is a problem-centered system for programming training. PG system designs many resources to(More)
BACKGROUND MicroRNAs act as posttranscriptional regulators of gene expression in many biological processes. Their deregulations occur commonly in gastric cancer (GC). Although DNA methylation constitutes an important mechanism for microRNA deregulation in cancer, this field largely remains unexplored. METHODOLOGY/PRINCIPAL FINDINGS Total RNA was extracted(More)
The bright exciton emission of carbon nanotubes is appealing for optoelectronic devices and fundamental studies of light-matter interaction in one-dimensional nanostructures. However, to date, the photophysics of excitons in carbon nanotubes is largely affected by extrinsic effects. Here we perform time-resolved photoluminescence measurements over 14 orders(More)
Measles is caused by measles virus belonging to genus Morbillivirus of the family Paramyxoviridae. Vaccination has played a critical role in controlling measles infection worldwide. However, in the recent years, outbreaks of measles infection still occur in many developing countries. Here, we report an outbreak of measles among healthcare workers and among(More)
The migratory locust, Locusta migratoria manilensis, is an immensely destructive agricultural pest that forms a devastating and voracious gregarious phase. The fungal insect pathogen, Metarhizium acridum, is a specialized locust pathogen that has been used as a potent mycoinsecticide for locust control. Little, however, is known about locust immune tissue,(More)
The complex mol-ecule of the tetra-nuclear cubane-type title compound, [Cu(4)I(4)(C(11)H(12)N(2)O(2))(4)], has crystallographically imposed fourfold inversion symmetry. The Cu(I) ions are coordinated in a distorted tetra-hedral geometry by an N atom of a benzimidazole ring system and three μ(3)-iodide ions, forming a Cu(4)I(4) core. In the crystal, complex(More)
The shortage of available genomic and transcriptomic data hampers the molecular study on the migratory locust, Locusta migratoria manilensis (L.) (Orthoptera: Acrididae) central nervous system (CNS). In this study, locust CNS RNA was sequenced by deep sequencing. 41,179 unigenes were obtained with an average length of 570 bp, and 5,519 unigenes were longer(More)
An in situ optical absorbance technique was used to monitor the growth of vertically aligned single-walled carbon nanotubes (VA-SWNTs) at various temperatures and pressures. The effects of the growth temperature and ethanol pressure on the initial growth rate and catalyst lifetime were investigated. It was found that the ideal pressure for VA-SWNT synthesis(More)
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