Modelling the nicotine pharmacokinetic profile for e-cigarettes using real time monitoring of consumers' physiological measurements and mouth level exposure.

Pharmacokinetic (PK) studies can provide essential information on abuse liability of nicotine and tobacco products but are intrusive and must be conducted in a clinical environment. The objective of the study was to explore whether changes in plasma nicotine levels following use of an e-cigarette can be predicted from real time monitoring of physiological parameters and mouth level exposure (MLE) to nicotine before, during, and after e-cigarette vaping, using wearable devices. Such an approach would allow an -effective pre-screening process, reducing the number of clinical studies, reducing the number of products to be tested and the number of blood draws required in a clinical PK study Establishing such a prediction model might facilitate the longitudinal collection of data on product use and nicotine expression among consumers using nicotine products in their normal environments, thereby reducing the need for intrusive clinical studies while generating PK data related to product use in the real world.

Virtual work conditions impact negative work behaviors via ambiguity, anonymity, and (un)accountability: An integrative review.

Negative work behavior (NWB) occurs with concerning frequency in virtual work environments. Despite their prevalence and a substantial, multidisciplinary research literature on virtual negative behaviors in general, we lack clear answers regarding if, how, and why conditions differentiating virtual (i.e.

Norms Message Features in an Alcohol Consumption Context: Testing the Roles of Functional Matching and Numeracy.

The current study tested a theoretical account of how and when norms message features influence attitudes and intentions. Specifically, we examined whether functional matching and numeracy help to explain variation in persuasive outcomes following exposure to norms messaging. We executed two experiments to test our functional matching and numeracy assumptions in the context of alcohol consumption.

Body MRI Subspecialty Reinterpretations at a Tertiary Care Center: Discrepancy Rates and Error Types.

Radiology departments in tertiary care centers are frequently asked to perform secondary interpretations of imaging studies, particularly when a patient is transferred from a community hospital. Discrepancy rates in radiology vary widely, with low rates reported for preliminary resident reports that are overread by attending radiologists (2-6%) and higher rates (up to 56%) for secondary interpretations. Abdominal and pelvic imaging and cross-sectional imaging have the highest discrepancy rates.

Finding Common Ground: Can Provider-Patient Race Concordance and Self-disclosure Bolster Patient Trust, Perceptions, and Intentions?

Background: Improvements in provider-patient relationships may help alleviate health disparities. Provider-patient race concordance and provider self-disclosure are variables that may help improve this relationship.

Purpose: This study sought to answer if provider-patient race concordance and provider self-disclosure may improve patient trust, rapport, similarity, likeability, intention to disclose, satisfaction, behavioral intention to keep a provider, and intention to recommend a provider, while using empathy as a covariate.

Extending Efforts to Move Cigarette and e-Cigarette Beliefs: Message Exposure and Belief Structures.

This study examines message exposure and belief structures in the context of tobacco prevention and education efforts. Though it is imperative that researchers identify and test messaging strategies that move beliefs in the desired direction, these efforts must take care to consider the existing belief structures of the target audience. A pretest-posttest design was employed in order to extend an existing tobacco-free initiative.

Shake No Bake: A Homemade Ultrasound Gel Recipe for Low-Resource Settings.

Commercially produced ultrasound coupling gel is often a scarce resource in rural regions of low-income countries that use sonography as their main imaging modality and, when available, may be cost prohibitive. Various homemade gels were created and tested to assure image quality was not compromised. Glucomannan-based gel and guar gum-based gel had superior physical properties in initial testing and showed no substantial difference compared with commercially available ultrasound gel on subject and phantom imaging and analysis (P > .

Seeking Ways to Inform the Uninformed: Improving the Informed Consent Process in Online Social Science Research.

Participants often do not read consent forms in social science research. This is not surprising, especially for online studies, given they do not typically offer greater risk than what is encountered in daily life. However, if no one is reading, are participants really informed? This study used previous research to craft experimentally manipulated consent forms utilizing different visual presentations (e.

Risk Belief and Attitude Formation From Translated Scientific Messages About PFOA, an Environmental Risk Associated With Breast Cancer.

Evidence regarding possible environmental causes of breast cancer is advancing. Often, however, the public is not informed about these advances in a manner that is easily understandable. This research translates findings from biologists into messages at two literacy levels about perfluorooctanoic acid (PFOA), a possible environmental contributor to breast cancer.

Fitting identity in the reasoned action framework: A meta-analysis and model comparison.

Several competing models have been put forth regarding the role of identity in the reasoned action framework. The standard model proposes that identity is a background variable. Under a typical augmented model, identity is treated as an additional direct predictor of intention and behavior.

Health Blogging and Social Support: A 3-Year Panel Study.

The reported study explored the implications of informal computer-mediated social support for the well-being of individuals coping with illness over the course of 3 years. A panel study was conducted in which respondents--bloggers writing about their experiences living with a health condition--reported on their perceptions of social support and well-being during 2010 and again during 2013. Among respondents who completed both questionnaires (n = 49), increases in support availability from family and friends were related to improvements in bloggers' health self-efficacy as well as improvements in bloggers' loneliness, particularly among those who also experienced increased support availability from blog readers.

Deterministic Domain Wall Motion Orthogonal To Current Flow Due To Spin Orbit Torque.

Spin-polarized electrons can move a ferromagnetic domain wall through the transfer of spin angular momentum when current flows in a magnetic nanowire. Such current induced control of a domain wall is of significant interest due to its potential application for low power ultra high-density data storage. In previous reports, it has been observed that the motion of the domain wall always happens parallel to the current flow - either in the same or opposite direction depending on the specific nature of the interaction.

Scientific Message Translation and the Heuristic Systematic Model: Insights for Designing Educational Messages About Progesterone and Breast Cancer Risks.

Results of ongoing scientific research on environmental determinants of breast cancer are not typically presented to the public in ways they can easily understand and use to take preventive actions. In this study, results of scientific studies on progesterone exposure as a risk factor for breast cancer were translated into high and low literacy level messages. Using the heuristic systematic model, this study examined how ability, motivation, and message processing (heuristic and systematic) influenced perceptions of risk beliefs and negative attitudes about progesterone exposure among women who read the translated scientific messages.

Systems biology defines the biological significance of redox-active proteins during cellulose degradation in an aerobic bacterium.

Microbial depolymerization of plant cell walls contributes to global carbon balance and is a critical component of renewable energy. The genomes of lignocellulose degrading microorganisms encode diverse classes of carbohydrate modifying enzymes, although currently there is a paucity of knowledge on the role of these proteins in vivo. We report the comprehensive analysis of the cellulose degradation system in the saprophytic bacterium Cellvibrio japonicus.

Engineering and two-stage evolution of a lignocellulosic hydrolysate-tolerant Saccharomyces cerevisiae strain for anaerobic fermentation of xylose from AFEX pretreated corn stover.

The inability of the yeast Saccharomyces cerevisiae to ferment xylose effectively under anaerobic conditions is a major barrier to economical production of lignocellulosic biofuels. Although genetic approaches have enabled engineering of S. cerevisiae to convert xylose efficiently into ethanol in defined lab medium, few strains are able to ferment xylose from lignocellulosic hydrolysates in the absence of oxygen.

Aromatic inhibitors derived from ammonia-pretreated lignocellulose hinder bacterial ethanologenesis by activating regulatory circuits controlling inhibitor efflux and detoxification.

Efficient microbial conversion of lignocellulosic hydrolysates to biofuels is a key barrier to the economically viable deployment of lignocellulosic biofuels. A chief contributor to this barrier is the impact on microbial processes and energy metabolism of lignocellulose-derived inhibitors, including phenolic carboxylates, phenolic amides (for ammonia-pretreated biomass), phenolic aldehydes, and furfurals. To understand the bacterial pathways induced by inhibitors present in ammonia-pretreated biomass hydrolysates, which are less well studied than acid-pretreated biomass hydrolysates, we developed and exploited synthetic mimics of ammonia-pretreated corn stover hydrolysate (ACSH).

Comparison of cathode ray tube and liquid crystal display stimulators for use in multifocal VEP.

Purpose: To compare the modified signal-to-noise ratio (SNR*) of multifocal visual evoked potential (mfVEP) responses elicited by a cathode ray tube (CRT) and liquid crystal display (LCD) monitor in normal subjects.

Methods: An LCD monitor and CRT monitor were luminance and contrast matched. Luminance stability and the effect of viewing angle on luminance and contrast was measured for both screens.

Correcting direct effects of ethanol on translation and transcription machinery confers ethanol tolerance in bacteria.

The molecular mechanisms of ethanol toxicity and tolerance in bacteria, although important for biotechnology and bioenergy applications, remain incompletely understood. Genetic studies have identified potential cellular targets for ethanol and have revealed multiple mechanisms of tolerance, but it remains difficult to separate the direct and indirect effects of ethanol. We used adaptive evolution to generate spontaneous ethanol-tolerant strains of Escherichia coli, and then characterized mechanisms of toxicity and resistance using genome-scale DNAseq, RNAseq, and ribosome profiling coupled with specific assays of ribosome and RNA polymerase function.

Death by a thousand cuts: the challenges and diverse landscape of lignocellulosic hydrolysate inhibitors.

Lignocellulosic hydrolysate (LCH) inhibitors are a large class of bioactive molecules that arise from pretreatment, hydrolysis, and fermentation of plant biomass. These diverse compounds reduce lignocellulosic biofuel yields by inhibiting cellular processes and diverting energy into cellular responses. LCH inhibitors present one of the most significant challenges to efficient biofuel production by microbes.

Universal genetic assay for engineering extracellular protein expression.

A variety of strategies now exist for the extracellular expression of recombinant proteins using laboratory strains of Escherichia coli . However, secreted proteins often accumulate in the culture medium at levels that are too low to be practically useful for most synthetic biology and metabolic engineering applications. The situation is compounded by the lack of generalized screening tools for optimizing the secretion process.

Ultrafast 3-T MRI in the evaluation of children with acute lower abdominal pain for the detection of appendicitis.

Objective: The purpose of this study is to evaluate the feasibility of ultrafast 3-T MRI in the evaluation of children with acute lower abdominal pain for the detection of appendicitis.

Subjects And Methods: Forty-two pediatric patients (30 girls and 12 boys; mean age, 11.5 years; age range, 4-17 years) with acute abdominal pain were prospectively studied.

Genetic and functional genomic approaches for the study of plant cell wall degradation in Cellvibrio japonicus.

Microbial degradation of plant cell walls is a critical contributor to the global carbon cycle, and enzymes derived from microbes play a key role in the sustainable biofuels industry. Despite its biological and biotechnological importance, relatively little is known about how microbes degrade plant cell walls. Much of this gap in knowledge has resulted from difficulties in extending modern molecular tools to the study of plant cell wall-degrading microbes.

Quantitative colorimetric measurement of cellulose degradation under microbial culture conditions.

We have developed a simple, rapid, quantitative colorimetric assay to measure cellulose degradation based on the absorbance shift of Congo red dye bound to soluble cellulose. We term this assay "Congo Red Analysis of Cellulose Concentration," or "CRACC." CRACC can be performed directly in culture media, including rich and defined media containing monosaccharides or disaccharides (such as glucose and cellobiose).

Complex physiology and compound stress responses during fermentation of alkali-pretreated corn stover hydrolysate by an Escherichia coli ethanologen.

The physiology of ethanologenic Escherichia coli grown anaerobically in alkali-pretreated plant hydrolysates is complex and not well studied. To gain insight into how E. coli responds to such hydrolysates, we studied an E.