Zonal separation of particles in density gradients contained in hollow or tubeless rotors has been explored with the aim of developing a preparative counterpart of the analytical ultracentrifuge. A rotor with a capacity of 1625 milliliters has been tested up to 22,500 revolutions per minute, with sucrose density gradients used. Excellent separation of subcellular particles has been achieved as ...

Mary E. Kauffman, Hoi-Ying Holman, R. Michael Lehman, Michael C. Martin Idaho State University, Depts. Of Biologiy and Geology, Pocatello, ID, 83209, Idaho National Engineering and Environmental Laboratory (INEEL), Idaho Falls, ID, 83415, Center for Environmental Biotechnology, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, Advanced Light Source, Lawrence Berkeley National Laborato...

Jen Webb reviews Julia Prendergast’s Bloodrust; Kevin Brophy Paul Magee’s Suddenness and the Composition of Poetic Thought; Dominic Symes Marcelle Freiman’s Spirit Level; Fazzari Marion May Campbell’s languish, Rosemary Williamson Roslyn Petelin’s How Writing Works: A Field Guide to Effective (2nd Edition).

Timon Screech. The Shogun’s Silver Telescope. God, Art, and Money in the English Quest for Japan, 1600-1625. Oxford: Oxford University Press; 2020, 336 p. ISBN: 978-01-988-3203-4. 44, 91 €
 Yulia Frumer. Making Time. Astronomical Time Measurement Tokugawa Japan. Chicago: of Chicago 2018, 290 978-0-226-51644-8. 47,99 €

The Cover Feature shows that our results achieved unpresented high stability and durability for a Li−S battery from metal–organic framework (MOF)-derived material. study was led by Prof. Chih Wei Chu, Ming-Hsi Chiang Kuang-Lieh Lu Academia Sinica Fu Jen Catholic University, Taiwan. More information can be found in the Article A. I. Inamdar, N. Kaisar et al.

Recent studies have identified several new genes in Listeria monocytogenes which are positively or negatively affected by PrfA and grouped into three classes (E. Milohanic et al., Mol. Microbiol. 47:1613-1625, 2003). In vitro transcription performed with promoters of some class III genes showed strict SigB-dependent but PrfA-independent transcription initiation. Transcription starting at the pr...

Dr. Weaver is Associate Director of the Center for Educational Policy and Research, Dr. Haden is Associate Executive Director and Director of the Center for Educational Policy and Research, and Dr. Valachovic is Executive Director, all at the American Dental Education Association. Direct correspondence and requests for reprints to Dr. Richard G. Weaver, American Dental Education Association, 16...