Browsing Science (Faculty of) by Title

1-AMINOCYCLOPROPANE-1-CARBOXYLATE (ACC) DEAMINASE GENES IN RHIZOBIA: ISOLATION AND CHARACTERIZATION

Duan, Jin (University of Waterloo, 2007-05-14)

A collection of 233 putative Rhizobia strains from 30 different sites across Saskatchewan, Canada was assayed for ACC deaminase activity, with 27 of the strains displaying activity. When all 27 strains were characterized ...

1H MAS NMR Study of Water on Pd-MCM-41

Crone, Joshua (University of Waterloo, 2015-06-18)

Hydrogen spillover represents one of the most promising avenues to achieve hydrogen storage at the density required for transportation applications. The spillover phenomenon, however, is a topic of much debate, with many ...

2-Aminopurine-modified DNA homopolymers for robust and sensitive detection of mercury and silver

Zhou, Wenhu; Ding, Jinsong; Liu, Juewen (Elsevier, 2017-01-15)

Heavy metal detection is a key topic in analytical chemistry. DNA-based metal recognition has advanced significantly producing many specific metal ligands, such as thymine for Hg2+ and cytosine for Ag+. For practical ...

3-Phenylpyrazino[1,2-a]indol-1(2H)-ones as dual cholinesterase and amyloid aggregation inhibitors

Gujral, Sarbjeet Singh (University of Waterloo, 2017-05-10)

The year 2017, marks the 110th anniversary of the discovery of Alzheimer’s disease (AD)- a devastating neurodegenerative disease. Regardless of the significant advances made in the past century on the pathology of AD, the ...

A 30-Year Study of Impacts, Recovery, and Development of Critical Effect Sizes for Endocrine Disruption in White Sucker (Catostomus commersonii) Exposed to Bleached-Kraft Pulp Mill Effluent at Jackfish Bay, Ontario, Canada

Ussery, Erin J.; McMaster, Mark E.; Servos, Mark. R.; Miller, David H.; Munkittrick, Kelly R. (Frontiers, 2021-04-22)

Jackfish Bay is an isolated bay on the north shore of Lake Superior, Canada that has received effluent from a large bleached-kraft pulp mill since the 1940s. Studies conducted in the late 1980s found evidence of reductions ...

3D bioprinting of liver-mimetic construct with alginate/cellulose nanocrystal hybrid bioink

Wu, Yun; Lin, Zhi Yuan (William); Wenger, Andrew; Tam, Kam C.; Tang, Xiaowu (Shirley) (Elsevier, 2018-03-01)

3D bioprinting is a novel platform for engineering complex, three-dimensional (3D) tissues that mimic real ones. The development of hybrid bioinks is a viable strategy that integrates the desirable properties of the ...

3D N-doped hybrid architectures assembled from 0D T-Nb2O5 embedded in carbon microtubes toward high-rate Li-ion capacitors

Tolami Hemmati, Sahar; Li, Ge; Wang, Xiaolei; Ding, Yuanli; Pei, Yu; Yu, Aiping; Chen, Zhongwei (Elsevier, 2019-02)

Herein, a unique nitrogen-doped T-Nb2O5/tubular carbon hybrid structure in which T-Nb2O5 nanoparticles are homogeneously embedded in an in-situ formed nitrogen-doped microtubular carbon is synthesized, utilizing a facile ...

3D printing of soft hydrogels incorporating functional nanomaterials

Wu, Yun (University of Waterloo, 2017-01-10)

Tissue engineering (TE) scaffolds are required to closely mimic the human body environment to enable the study of cell behavior in vitro and allow the fabrication of artificial tissue constructs. The scaffolds should possess ...

400 kHz Spectral Domain Optical Coherence Tomography for Corneal Imaging

Chen, Lin Kun (University of Waterloo, 2021-12-23)

The cornea is the transparent, outermost layer of the human eye that contributes approximately 70% of the refractive power of the eye in air. It is composed of five major tissue layers: the epithelium, the Bowman’s membrane, ...

A 4d Lorentzian Spin Foam Model With Timelike Surfaces

Hnybida, Jeffrey (University of Waterloo, 2010-10-07)

We construct a 4d Lorentzian spin foam model capable of describing both spacelike and timelike surfaces. To do so we use a coherent state approach inspired by the Riemannian FK model. Using the coherent state method we ...

5-HT7 Receptor Neuroprotection against Excitotoxicity in the Hippocampus

Vasefi, Seyedeh Maryam (University of Waterloo, 2014-04-11)

Introduction and Objectives: The PDGFβ receptor and its ligand, PDGF-BB, are expressed throughout the central nervous system (CNS), including the hippocampas. Several reports confirm that PDGFβ receptors are neuroprotective ...

Above Bandgap Hyperpolarization Mechanism in Isotopically Purified Silicon and Optimal Bayesian Experiment Design for $T_1$ Estimation

Alexander, Thomas (University of Waterloo, 2018-05-24)

This thesis is concerned with the mechanism underlying the above bandgap illumination Dynamic Nuclear Polarization (DNP) of phosphorus donors in isotopically purified silicon-28. Two proposed DNP models are introduced and ...

Abundance Matching with the Galaxies of the Virgo Cluster and the Stellar-to-Halo Mass Relation

Grossauer, Jonathan (University of Waterloo, 2012-09-27)

Using data from the Next Generation Virgo Cluster Survey and high-resolution simulations of Virgo cluster-like halos, we determine the stellar-to-halo mass relation (SHMR) for subhalos, using the technique of abundance ...

Accelerating peroxidase mimicking nanozymes using DNA

Liu, Biwu; Liu, Juewen (Royal Society of Chemistry, 2015-09-07)

DNA-capped iron oxide nanoparticles are nearly 10-fold more active as a peroxidase mimic for TMB oxidation than naked nanoparticles. To understand the mechanism, the effect of DNA length and sequence is systematically ...

Acceptance of Commercially Available Wearable Activity Trackers Among Adults Aged Over 50 and With Chronic Illness: A Mixed-Methods Evaluation

Mercer, Kathryn; Grindrod, Kelly; Schneider, Eric; Li, Melissa; Chilana, Parmit; Giangregorio, Lora M. (JMIR Mhealth Uhealth., 2016-01-27)

Background: Physical inactivity and sedentary behavior increase the risk of chronic illness and death. The newest generation of “wearable” activity trackers offers potential as a multifaceted intervention to help people ...