Index Catalog // ScholarsArchive@OSU

Catalyst selective and regiodivergent O- to C- or N-carboxyl transfer of pyrazolyl carbonates: synthetic and computational studies

Creator:: Gould, Eoin, Walden, Daniel M., Kasten, Kevin, Johnston, Ryne C., Wu, Jiufeng, Slawin, Alexandra M., Mustard, Thomas J. L., Johnston, Brittany, Davies, Tony, Cheong, Paul Ha-Yeon, and Smith, Andrew D.
Abstract:: The regiodivergent O- to C- or N-carboxyl transfer of pyrazolyl carbonates is described, with DMAP giving preferential N-carboxylation and triazolinylidenes promoting selective C-carboxylation (both with up to >99 : 1 regioselectivity). An enantioselective O- to C-carboxyl variant using NHC catalysis is demonstrated (up to 92% ee), while mechanistic and DFT studies outline...
Resource Type:: Article
Full Text:: O- to C- or N-carboxyl transfer of pyrazolyl carbonates: synthetic and computational studies

High-resolution glacial and deglacial record of atmospheric methane by continuous-flow and laser spectrometer analysis along the NEEM ice core

Creator:: Chappellaz, J., Stowasser, C., Blunier, T., Baslev-Clausen, D., Brook, Edward J., Dallmayr, R., Fain, X., Lee, J. E., Mitchell, L. E., Pascual, O., Romanini, D., Rosen, J., and Schuepbach, S.
Abstract:: The Greenland NEEM (North Greenland Eemian Ice Drilling) operation in 2010 provided the first opportunity to combine trace-gas measurements by laser spectroscopic instruments and continuous-flow analysis along a freshly drilled ice core in a field-based setting. We present the resulting atmospheric methane (CH₄) record covering the time period from 107.7...
Resource Type:: Article
Full Text:: de- note water or gas flow rates in mL min, and waste is abbreviated as w. ated with D/O events

Transmission Power Control with the Guaranteed Communication Reliability in WSN

Creator:: Kim, Dae-Young, Jin, Zilong, Choi, Jungwook, Lee, Ben, and Cho, Jinsung
Abstract:: In a wireless sensor network, sensor nodes are deployed in an ad hoc fashion and they deliver data packets using multihop transmission. However, transmission failures occur frequently in the multihop transmission over wireless media. Thus, a loss recovery mechanism is required to provide end-to-end reliability. In addition, because the sensor...
Resource Type:: Article
Full Text:: WSN Kim, D. Y., Jin, Z., Choi, J., Lee, B., & Cho, J. (2015). Transmission Power Control with the

Ultraviolet Radiation Influences Perch Selection by a Neotropical Poison-Dart Frog

Creator:: Kats, Lee B., Bucciarelli, Gary M., Schlais, David E., Blaustein, Andrew R., and Han, Barbara A.
Abstract:: Ambient ultraviolet-B radiation can harm amphibian eggs, larvae and adults. However, some amphibians avoid UV-B radiation when given the opportunity. The strawberry poison dart frog, Oophaga pumilio, is diurnal and males vocalize throughout the day in light gaps under forest canopies that expose them to solar radiation. Previous studies have...
Resource Type:: Article
Full Text:: Selection by a Neotropical Poison-Dart Frog Lee B. Kats1*, Gary M. Bucciarelli2, David E. Schlais1, Andrew R

Experimental Study on Detection of Deterioration in Concrete Using Infrared Thermography Technique

Creator:: Huh, Jungwon, Tran, Quang Huy, Lee, Jong-Han, Han, DongYeob, Ahn, Jin-Hee, and Yim, Solomon
Abstract:: Concrete is certainly prone to internal deteriorations or defects during the construction and operating periods. Compared with other nondestructive techniques, infrared thermography can easily detect the subsurface delamination in a very short period of time, but accurately identifying its size and depth in concrete is a very challenging task. In...
Resource Type:: Article
Full Text:: Jong-Han Lee,2 DongYeob Han,1 Jin-Hee Ahn,3 and Solomon Yim4 1Department of Ocean Civil Engineering

Mechanistic Insights into Validoxylamine A 7’-Phosphate Synthesis by VldE Using the Structure of the Entire Product Complex

Creator:: Cavalier, Michael C., Yim, Young-Sun, Asamizu, Shumpei, Neau, David, Almabruk, Khaled H., Mahmud, Taifo, and Lee, Yong-Hwan
Abstract:: The pseudo-glycosyltransferase VldE catalyzes non-glycosidic C-N coupling between an unsaturated cyclitol and a saturated aminocyclitol with the conservation of the stereochemical configuration of the substrates to form validoxylamine A 7'-phosphate, the biosynthetic precursor of the antibiotic validamycin A. To study the molecular basis of its mechanism, the three-dimensional structures of...
Resource Type:: Article
Full Text:: ) ND2 N2 (3.4) Asp360 O O6 (3.3) Asn361 OD1 N1 (2.6) OD1 N2 (2.9) Asp362 N O6 (2.9) O O6 (3.2

First record of the genus Pseudopilolabus Legalov, 2003 (Coleoptera: Attelabidae) in Dominican amber

Creator:: Poinar, George O., Jr., Brown, A. E., and Legalov, A. A.
Abstract:: A new weevil species (urn:lsid:zoobank.org: act:2D5E9E4A-A250-4D0A-AF69-CF4753436686), Pseudopilolabus othnius Poinar, Brown and Legalov, sp. nov. (Coleoptera: Attelabidae), is described from Dominican amber. The new species is close to the extant P. viridanus (Gyllenhal, 1839) and P. splendens (Gyllenhal, 1839) but differs by having a bronzed body, narrower and more convex elytral...
Resource Type:: Article
Full Text:: ). Acknowledgements. We are grateful to L. Chamorro (USA: Wash- ington), J. Frisch (Germany: Berlin), O. Jaeger

A Prediction Algorithm for Coexistence Problem in Multiple-WBAN Environment

Creator:: Jin, Zilong, Han, Yoonjeong, Cho, Jinsung, and Lee, Ben
Abstract:: The coexistence problem occurs when a single wireless body area network (WBAN) is located within a multiple-WBAN environment. This causes WBANs to suffer from severe channel interference that degrades the communication performance of each WBAN. Since a WBAN handles vital signs that affect human life, the detection or prediction of...
Resource Type:: Article
Full Text:: Jin, Z., Han, Y., Cho, J., & Lee, B. (2015). A Prediction Algorithm for Coexistence Problem in

What the Inbred Scandinavian Wolf Population Tells Us about the Nature of Conservation

Creator:: Räikkönen, Jannikke, Vucetich, John A., Vucetich, Leah M., Peterson, Rolf O., and Nelson, Michael P.
Abstract:: The genetic aspects of population health are critical, but frequently difficult to assess. Of concern has been the genetic constitution of Scandinavian wolves (Canis lupus), which represent an important case in conservation. We examined the incidence of different congenital anomalies for 171 Scandinavian wolves, including the immigrant founder female, born...
Resource Type:: Article
Full Text:: , Rolf O. Peterson2, Michael P. Nelson3 1 Swedish Museum of Natural History, Department of Contaminant

The plant phenology monitoring design for The National Ecological Observatory Network

Creator:: Elmendorf, Sarah C., Jones, Katherine D., Cook, Benjamin I., Diez, Jeffrey M., Enquist, Carolyn A. F., Hufft, Rebecca A., Jones, Matthew O., Mazer, Susan J., Miller-Rushing, Abraham J., Moore, David J. P., Schwartz, Mark D., and Weltzin, Jake F.
Abstract:: Phenology is an integrative science that comprises the study of recurring biological activities or events. In an era of rapidly changing climate, the relationship between the timing of those events and environmental cues such as temperature, snowmelt, water availability, or day length are of particular interest. This article provides an...
Resource Type:: Article
Full Text:: Matthew O. Jones,8 Susan J. Mazer,9 Abraham J. Miller-Rushing,10 David J. P. Moore,11 Mark D. Schwartz

ScholarsArchive@OSU

Catalyst selective and regiodivergent O- to C- or N-carboxyl transfer of pyrazolyl carbonates: synthetic and computational studies

High-resolution glacial and deglacial record of atmospheric methane by continuous-flow and laser spectrometer analysis along the NEEM ice core

Transmission Power Control with the Guaranteed Communication Reliability in WSN

Ultraviolet Radiation Influences Perch Selection by a Neotropical Poison-Dart Frog

Experimental Study on Detection of Deterioration in Concrete Using Infrared Thermography Technique

Mechanistic Insights into Validoxylamine A 7’-Phosphate Synthesis by VldE Using the Structure of the Entire Product Complex

First record of the genus Pseudopilolabus Legalov, 2003 (Coleoptera: Attelabidae) in Dominican amber

A Prediction Algorithm for Coexistence Problem in Multiple-WBAN Environment

What the Inbred Scandinavian Wolf Population Tells Us about the Nature of Conservation

The plant phenology monitoring design for The National Ecological Observatory Network

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