نتایج جستجو برای: 4600 bc

تعداد نتایج: 17376  

2017
Kaiyan Qiu Anil Netravali Stephen C. Bondy

Two high-performance bacterial cellulose (BC) nanofiber-based hybrid structures were produced using an in situ self-assembly approach, one with microfibrillated cellulose (MFC) and another with sisal fiber, by incorporating them in the fermentation media. The fabricated BC-MFC hybrid and BC-sisal hybrid fibers showed enhanced mechanical properties compared to pure BC and sisal fibers, respectiv...

Journal: :ACS applied materials & interfaces 2014
Mahmoud Rouabhia Jérémie Asselin Neftaha Tazi Younès Messaddeq Dennis Levinson Ze Zhang

Bacterial cellulose (BC), a three-dimensional fibril, is a natural polymer that can be used for many applications. BC effectiveness may be improved by enhancing surface characteristics contributing to a better physiologic interaction with human and animal cells and to intrinsically present antimicrobial agents. In the present study, gentamicin-activated BC membranes were obtained by chemically ...

Journal: :Applied and environmental microbiology 2010
Driss Elhanafi Vikrant Dutta Sophia Kathariou

Quaternary ammonium compounds such as benzalkonium chloride (BC) are widely used as disinfectants in both food processing and medical environments. BC-resistant strains of Listeria monocytogenes have been implicated in multistate outbreaks of listeriosis and have been frequently isolated from food processing plants. However, the genetic basis for BC resistance in L. monocytogenes remains poorly...

2011
E. CHUNG KYUNGHWA LEE DETLEF MÜLLER

The effects of coating on black carbon (BC) optical properties and global climate forcing are revisited with more realistic approaches. We use the Generalized Multiparticle Mie method along with a realistic size range of monomers and clusters to compute the optical properties of uncoated BC clusters. Mie scattering is used to compute the optical properties of BC coated by scattering material. W...

2016
Xufeng Fei George Christakos Zhaohan Lou Yanjun Ren Qingmin Liu Jiaping Wu

Thyroid and breast cancers (TC, BC) are common female malignant tumors worldwide. Studies suggest that TC patients have a higher BC risk, and vice versa. However, it has not been investigated quantitatively if there is an association between the space-time TC and BC incidence distributions at the population level. This work aims to answer this question. 5358 TC and 8784 BC (female) cases were d...

2016
Leigh Anne Swayne Juan C. Sanchez-Arias Andrew Agbay Stephanie Michelle Willerth

1Centre for Biomedical Research, University of Victoria, Victoria, BC, Canada, 2Division of Medical Sciences, University of Victoria, Victoria, BC, Canada, 3Island Medical Program, Department of Cellular and Physiological Sciences, The University of British Columbia, Victoria, BC, Canada, 4Department of Mechanical Engineering, University of Victoria, Victoria, BC, Canada, 5International Collabo...

Journal: :Physics-Uspekhi 1995

Journal: :Ergonomics 2010
J Klein Hesselink J de Leede A Goudswaard

This article reports a field study of a shift roster change in a large steel producer. The changes in the roster are threefold: (1) from backward rotating to forward rotating; (2) from rather slow (three) to fast rotating (two consecutive shifts); (3) the number of days off after the night shifts was changed from two to three. Company data cover 1 year before and 1 year after the implementation...

2001
Henry T. Mullins John D. Halfman

Approximately 70 km of new decimeter-resolution seismic reflection profile data from Owasco Lake, New York define a middle Holocene (∼4600 14C yr B.P.) erosion surface in the north end of the lake at water depths as great as 26 m. Beneath the lake, postglacial sediments are up to 9 m thick and represent about 10% of the total sediment fill. Early to middle Holocene sediments, ∼6 m thick, contai...

Journal: :Journal of physical activity & health 2012
Michael W Beets Aaron Beighle Matteo Bottai Laura Rooney Fallon Tilley

BACKGROUND Policies to require afterschool programs (ASPs, 3 PM to 6 PM) to provide children a minimum of 30 minutes of moderate-to-vigorous physical activity (MVPA) exist. With few low-cost, easy-to-use measures of MVPA available to the general public, ASP providers are limited in their ability to track progress toward achieving this policy-goal. Pedometers may fill this gap, yet there are no ...

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