Negative / Null Result ReportOpen accessDentistry
Mario Imburgia, Silvia Logozzo, Uli Hauschild et al. · 2017 · BMC Oral Health
BACKGROUND: Until now, only a few studies have compared the ability of different intraoral scanners (IOS) to capture high-quality impressions in patients with dental implants. Hence, the aim of this study was to compare the trueness and precision of four IOS in a partially edentulous model (PEM) with three implants and in a fully edentulous model (FEM) with six implants. METHODS: Two gypsum models were prepared with respectively three and six implant analogues, and polyether-ether-ketone cylinders screwed on. These models were scanned with a reference scanner (ScanRider®), and with four IOS (C
View details →Negative / Null Result ReportMedicine
Jay H. Traverse, Timothy D. Henry, Carl J. Pepine et al. · 2012 · JAMA
CONTEXT: While the delivery of cell therapy after ST-segment elevation myocardial infarction (STEMI) has been evaluated in previous clinical trials, the influence of the timing of cell delivery on the effect on left ventricular function…
View details →Negative / Null Result ReportSocial Sciences
Haywantee Ramkissoon, Liam Smith, Betty Weiler · 2012 · Journal of Sustainable Tourism
Place attachment is a multidimensional construct comprising place dependence, place affect, place identity, and place social bonding. Yet, studies investigating the relationships between place attachment, place satisfaction, and…
View details →Negative / Null Result ReportOpen accessPsychology
Paola Ferri, Matteo Guadi, Luigi Marcheselli et al. · 2016 · Risk Management and Healthcare Policy
BACKGROUND: Shift work is considered necessary to ensure continuity of care in hospitals and residential facilities. In particular, the night shift is one of the most frequent reasons for the disruption of circadian rhythms, causing…
View details →Negative / Null Result ReportOpen accessMedicine
Tom Jefferson, Mark Jones, Peter Doshi et al. · 2014 · Cochrane Database of Systematic Reviews
BACKGROUND: Neuraminidase inhibitors (NIs) are stockpiled and recommended by public health agencies for treating and preventing seasonal and pandemic influenza. They are used clinically worldwide. OBJECTIVES: To describe the potential…
View details →Negative / Null Result ReportOpen accessAgricultural and Biological Sciences
Humira Sonah, Louise S. O’Donoughue, Elroy R. Cober et al. · 2014 · Plant Biotechnology Journal
Soya bean is a major source of edible oil and protein for human consumption as well as animal feed. Understanding the genetic basis of different traits in soya bean will provide important insights for improving breeding strategies for this…
View details →Negative / Null Result ReportEconomics, Econometrics and Finance
David Arnold, Will Dobbie, Crystal Yang · 2018 · The Quarterly Journal of Economics
Abstract This article develops a new test for identifying racial bias in the context of bail decisions—a high-stakes setting with large disparities between white and black defendants. We motivate our analysis using Becker’s model of racial…
View details →Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology
Peiming Zheng, Qin Luo, Weiwei Wang et al. · 2018 · Cell Death and Disease
Abstract Tumor-associated macrophages (TAMs) are a major component of the tumor microenvironment and have been shown to contribute to tumor aggressiveness. However, the detailed mechanisms underlying the pro-metastatic effect of TAMs on gastric cancer are not clearly defined. Here, we show that TAMs are enriched in gastric cancer. TAMs are characterized by M2-polarized phenotype and promote migration of gastric cancer cells in vitro and in vivo. Furthermore, we find that M2-derived exosomes determine the TAMs-mediated pro-migratory activity. Using mass spectrometry, we identify that apolipopro
View details →Negative / Null Result ReportOpen accessPsychology
Kani Ülger · 2018 · Interdisciplinary Journal of Problem-based Learning
The problem-based learning (PBL) approach was implemented as a treatment for higher education visual arts students over one semester to examine its effect on the creative thinking and critical thinking disposition of these students. PBL…
View details →Negative / Null Result ReportOpen accessImmunology and Microbiology
Dermot McGovern, Michelle R. Jones, Kent D. Taylor et al. · 2010 · Human Molecular Genetics
Genetic variation in both innate and adaptive immune systems is associated with Crohn's disease (CD) susceptibility, but much of the heritability to CD remains unknown. We performed a genome-wide association study (GWAS) in 896 CD cases…
View details →Negative / Null Result ReportOpen accessSocial Sciences
Christopher R. Berry, Barry C. Burden, William G. Howell · 2010 · American Political Science Review
Scholarship on distributive politics focuses almost exclusively on the internal operations of Congress, paying particular attention to committees and majority parties. This article highlights the president, who has extensive opportunities,…
View details →Negative / Null Result ReportPsychology
Lynne Steinberg, Carla Sharp, Matthew S. Stanford et al. · 2012 · Psychological Assessment
The Barratt Impulsivity Scale (BIS), a 30-item self-report measure, is one of the most commonly used scales for the assessment of the personality construct of impulsiveness. It has recently marked 50 years of use in research and clinical…
View details →Negative / Null Result ReportOpen accessPhysics and Astronomy
Zaven Arzoumanian, P. T. Baker, Adam Brazier et al. · 2024 · Figshare
We search for an isotropic stochastic gravitational-wave background (GWB) in the newly released 11 year data set from the North American Nanohertz Observatory for Gravitational Waves (NANOGrav). While we find no evidence for a GWB, we place constraints on a population of inspiraling supermassive black hole (SMBH) binaries, a network of decaying cosmic strings, and a primordial GWB. For the first time, we find that the GWB constraints are sensitive to the solar system ephemeris (SSE) model used and that SSE errors can mimic a GWB signal. We developed an approach that bridges systematic SSE diff
View details →Negative / Null Result ReportSocial Sciences
Gail Kinman, Siobhan Wray, Calista Strange · 2011 · Educational Psychology
Although teaching has been described as a profoundly emotional activity, little is known about the emotional demands faced by teachers or how this impacts on their well-being. This study examined relationships between ‘emotional labour’,…
View details →Negative / Null Result ReportMaterials Science
Dimitrios Priftis, Matthew Tirrell · 2012 · Soft Matter
Mixing of oppositely charged polyelectrolytes in aqueous solutions may result in the formation of polyelectrolyte complexes (PEC). Phase separation and complex coacervation of polypeptides are investigated in this study. Polypeptides have…
View details →Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology
Jonathan A. Hern, Asma Baig, Gregory I. Mashanov et al. · 2010 · Proceedings of the National Academy of Sciences
G-protein-coupled receptors (GPCRs) are the largest family of transmembrane signaling proteins in the human genome. Events in the GPCR signaling cascade have been well characterized, but the receptor composition and its membrane…
View details →Negative / Null Result ReportOpen accessAgricultural and Biological Sciences
Joel Atallah, Lisa Teixeira, Raul Salazar et al. · 2014 · Proceedings of the Royal Society B Biological Sciences
Evolutionary innovation can allow a species access to a new ecological niche, potentially reducing competition with closely related species. While the vast majority of Drosophila flies feed on rotting fruit and other decaying matter, and…
View details →Negative / Null Result ReportOpen accessSocial Sciences
Davide Proserpio, Georgios Zervas · 2017 · Marketing Science
We investigate the relationship between a firm’s use of management responses and its online reputation. We focus on the hotel industry and present several findings. First, hotels are likely to start responding following a negative shock to…
View details →Negative / Null Result ReportOpen accessSocial Sciences
Deborah Carr, Vicki A. Freedman, Jennifer C. Cornman et al. · 2014 · Journal of Marriage and the Family
The authors examined associations between marital quality and both general life satisfaction and experienced (momentary) well‐being among older husbands and wives, the relative importance of own versus spouse's marital appraisals for…
View details →Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology
Lasse Folkersen, Eric B. Fauman, Maria Sabater‐Lleal et al. · 2017 · PLoS Genetics
Recent advances in highly multiplexed immunoassays have allowed systematic large-scale measurement of hundreds of plasma proteins in large cohort studies. In combination with genotyping, such studies offer the prospect to 1) identify mechanisms involved with regulation of protein expression in plasma, and 2) determine whether the plasma proteins are likely to be causally implicated in disease. We report here the results of genome-wide association (GWA) studies of 83 proteins considered relevant to cardiovascular disease (CVD), measured in 3,394 individuals with multiple CVD risk factors. We id
View details →Negative / Null Result ReportPsychology
Leah B. Shapira, Myriam Mongrain · 2010 · The Journal of Positive Psychology
The effectiveness of two online exercises intended to help individuals experience (1) self-compassion (n = 63) and (2) optimism (n = 55) were compared to a control intervention where participants wrote about an early memory (n = 70). A…
View details →Negative / Null Result Report
Elizabeth Demers, Jurian Hendrikse, Philip Joos et al. · 2021 · Journal of Business Finance & Accounting
Abstract Environmental, social and governance (“ESG”) scores have been widely touted as indicators of share price resilience during the COVID‐19 crisis. Contrary to this conventional wisdom, we present robust evidence that once industry…
View details →Negative / Null Result ReportOpen accessBusiness, Management and Accounting
Anushree Tandon, Amandeep Dhir, Puneet Kaur et al. · 2020 · Journal of Retailing and Consumer Services
Although consumer interest in organic food has risen over time, resulting in a generally positive attitude toward these organic food products, scholarly research suggests a comparatively low volume of its consumption in the market. This has resulted in an urgent need to study the motivations which enhance consumers’ proclivity to purchase food items produced organically. The current research attempts to understand potential associations between motivations (intrinsic and extrinsic), attitude, and buying behaviour towards organic food. Self-determination theory (SDT) was applied to develop a th
View details →Negative / Null Result ReportEconomics, Econometrics and Finance
Andra C. Ghent, Marianna Kudlyak · 2011 · Review of Financial Studies
We quantify the effect of recourse on default and find that recourse affects default by lowering the borrower's sensitivity to negative equity. At the mean value of the default option for defaulted loans, borrowers are 30% more likely to…
View details →Negative / Null Result ReportOpen accessBusiness, Management and Accounting
Bülent Sezen, Sibel Yıldız Çankaya · 2013 · Procedia - Social and Behavioral Sciences
Firms are facing growing pressure to become “greener” or more environmentally friendly. Consequently, firms have had to review their production processes as a result of pressures from the community and governments. This pilot study…
View details →Negative / Null Result ReportEconomics, Econometrics and Finance
Atif Mian, Amir Sufi · 2012 · The Quarterly Journal of Economics
Abstract We evaluate the impact of the 2009 Cash for Clunkers program on short- and medium-run auto purchases. Our empirical strategy exploits variation across U.S. cities in ex ante exposure to the program as measured by the number of…
View details →Negative / Null Result ReportOpen accessNeuroscience
David T. Jones, Mary M. Machulda, Prashanthi Vemuri et al. · 2011 · Neurology
OBJECTIVE: To investigate age-related default mode network (DMN) connectivity in a large cognitively normal elderly cohort and in patients with Alzheimer disease (AD) compared with age-, gender-, and education-matched controls. METHODS: We…
View details →Negative / Null Result ReportOpen accessNeuroscience
Richard Anney, Lambertus Klei, Dalila Pinto et al. · 2012 · Human Molecular Genetics
While it is apparent that rare variation can play an important role in the genetic architecture of autism spectrum disorders (ASDs), the contribution of common variation to the risk of developing ASD is less clear. To produce a more…
View details →Negative / Null Result ReportOpen accessDecision Sciences
Robert M. Kaplan, Veronica L. Irvin · 2015 · PLoS ONE
BACKGROUND: We explore whether the number of null results in large National Heart Lung, and Blood Institute (NHLBI) funded trials has increased over time. METHODS: We identified all large NHLBI supported RCTs between 1970 and 2012 evaluating drugs or dietary supplements for the treatment or prevention of cardiovascular disease. Trials were included if direct costs >$500,000/year, participants were adult humans, and the primary outcome was cardiovascular risk, disease or death. The 55 trials meeting these criteria were coded for whether they were published prior to or after the year 2000, wheth
View details →Negative / Null Result ReportSocial Sciences
Dawn Langan Teele, Joshua Kalla, Frances Rosenbluth · 2018 · American Political Science Review
This paper theorizes three forms of bias that might limit women's representation: outright hostility, double standards, and a double bind whereby desired traits present bigger burdens for women than men. We examine these forms of bias…
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