Linqing Wang

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Levels of arsenic in water from Meager Creek hot springs, British Columbia, Canada, were found to be naturally elevated. Biota including microbial mats, green algae, sedge, cedar, fleabane, monkey flower, moss, mushrooms and lichens, that were expected to be impacted by the water, were analyzed for total levels of arsenic and for arsenic species. The major(More)
The efficiency of in vitro culture systems for a premeiotic female germ cell is still low, mostly because of our incomplete understanding of the mechanisms controlling oogenesis and the obvious difficulties in reproducing the complex in vivo environment of such a process under in vitro conditions. Here we explored the possibility of recovering the(More)
A copper/DIPEA-catalyzed, aldehyde-induced intermolecular decarboxylative coupling reaction of natural α-amino acids and phosphites or secondary phosphine oxides was developed. In this process, a series of potentially useful ligands for organic synthesis and biologically important unnatural amino acid derivatives (tertiary amino phosphorus compounds) were(More)
We previously reported a series of novel endomorphin analogs with unnatural amino acid modifications. These analogs display good binding affinity and functional activity toward the μ opioid receptor (MOP). In the present study, we further investigated the spinal antinociceptive activity of these compounds. The analogs were potent in several nociceptive(More)
Surface O3 was monitored continuously during Aug. 12, 2010 to Jul. 21, 2011 at a high elevation site (3,200 m above sea level) in Qinghai Lake area (36°58'37″N, 99°53'56″E) in Northeast Tibetan Plateau, China. Daily average O3 ranged from 21.8 ppbv to 65.3 ppbv with an annual average of 41.0 ppbv. Seasonal average of O3 followed a decreasing order of(More)
A magnesium-catalyzed asymmetric ring-opening reaction of aziridine with indole has been realized by employing commercially available chiral ligands. Both of the enantiomers of the ring-opening product could be obtained with good yields and a high level of enantioselectivity. The corresponding ring-opening product could be further transformed to various(More)
The catalytic asymmetric synthesis of b-amino acids has been an intense area of research in recent years as these unnatural amino acids are basic elements of peptides and peptidomimetic precursors of many physiologically active compounds. In particular, many efforts have focused on synthetic methods towards a-hydroxy b-amino acid (norstatine) derivatives,(More)
In this paper the less seam texture mapping algorithm based on sub-blocks of constrained texture mapping algorithm is introduced, our model is divided into several blocks by some critical points, and the triangles in the two blocks are divided into two or more triangles, so that each triangle belongs to a unique block. Finally, the proposed algorithm to map(More)
The first stereocontrolled cross reaction of enones has been realized. A novel combinational magnesium catalyst was designed to address the enantioselectivity problem between reaction partners with an intermolecular symmetric structure and bearing identical functional groups. This new catalytic strategy was proven to be effective to introduce high levels of(More)