Four new species of Pentacentrus Gorochov from China are described and illustrated, P. acutiparamerus Liu & Shi sp. nov., P. biflexuous Liu & Shi sp. nov., P. emarginatus Liu & Shi sp. nov. and P. parvulus Liu & Shi sp. nov. A key and a distribution map of the Chinese species of this genus are provided.

Hemp-based materials have been recently proposed as adsorbents for metals present in aqueous solutions using adsorption-oriented processes. This study aims to reveal the adsorption mechanism of prepared from hemp shives co-products industry, namely sodium carbonate-activated (SHI-C) and polycarboxylic agent-grafted (SHI-BTCA) shives. The interactions between copper two hemp-based were character...

A number of efforts have been recently devoted to fault modeling, fault simulation and test generation for asynchronous circuits (Shi and Makris 2004). Simulation based approach for testing gate delay faults in asynchronous sequential circuits was proposed by Sur-Kolay et al (2000). Shi and Makris (2006) have proposed a test method for path delay faults based on a design for test strategy. In s...

In this study, a series of hemp shives (chènevotte) with different chemical compositions and properties, namely raw (SHI-R), washed water (SHI-W), three samples chemically modified KOH (SHI-OH), Na2CO3 (SHI-C) or H3PO4 (SHI-H), sample prepared by grafting carboxylic groups (SHI-BTCA), were used as adsorbents for the removal copper present in aqueous solutions. This article presents abatements k...

Growing up in rural China under the imposed hardships of the cultural revolution, Yigong Shi did not have the luxury of toys. Instead Shi, now the dean of the School of Life Sciences at Tsinghua University in Beijing, made elaborate models out of clay he collected from the fields. “I would stay for hours to a make a ship or train model with small parts,” he recalls. Decades later, as a structur...

The tolerances of a storage ring to its magnet imperfections largely depend upon the magnitude of the resulting tune shifts. A large tune shift would imply the potential danger of resonances and. hence. poor tolerances. When the errors are in field gradients or in random sextupole displacement. the cal cul ati ons of the RMS tune shi fts are strai ght forward. On the contra ry. when we cons i d...

The context here is image segmentation because it was in this domain that spectral clustering was introduced by Shi and Malik in 2000. Meila and Shi provide a random-walk interpretation of the spectral clustering algorithm, and then use a transition probability matrix to create a model which learns to segment images based on pixel intensity (which they call “edge strength”) and “co-circularity”...