Negative / Null Result ReportMathematics
W. Trey Hill, Gary L. Brase · 2012 · Quarterly Journal of Experimental Psychology
The thesis that the mind is better prepared to process frequencies-as compared to other numerical formats-continues to be debated. A recent aspect of this issue is the role of numeracy (numerical literacy; one's ability to understand and…
View details →Negative / Null Result ReportPsychology
Irene M. Pepperberg, Leigh Ann Hartsfield · 2014 · Journal of comparative psychology
Linking specific cognitive abilities of nonhuman species on a laboratory task to their evolutionary history-ecological niche can be a fruitful exercise in comparative psychology. Crucial issues, however, are the choice of task, the…
View details →Negative / Null Result ReportOpen accessMedicine
Huajun Zhang, Shawn Todd, Mary Tachedjian et al. · 2012 · Journal of Virology
Herpesviruses or herpesviral sequences have been identified in various bat species. Here, we report the isolation, cell tropism, and complete genome sequence of a novel betaherpesvirus from the bat Miniopterus schreibersii (MsHV). In…
View details →Negative / Null Result ReportOpen accessSocial Sciences
David Brady, Agnes Blome, Julie A. Kmec · 2018 · Socio-Economic Review
Abstract Prominent research has claimed that work–family reconciliation policies trigger ‘tradeoffs’ and ‘paradoxes’ in terms of gender equality with adverse labor market consequences for women. These claims have greatly influenced debates…
View details →Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology
Andreas Billich, Thomas Baumruker, Christian Beerli et al. · 2013 · PLoS ONE
BACKGROUND: Sphingosine-1-phosphate (S1P) regulates the egress of T cells from lymphoid organs; levels of S1P in the tissues are controlled by S1P lyase (Sgpl1). Hence, Sgpl1 offers a target to block T cell-dependent inflammatory processes. However, the involvement of Sgpl1 in models of disease has not been fully elucidated yet, since Sgpl1 KO mice have a short life-span. METHODOLOGY: We generated inducible Sgpl1 KO mice featuring partial reduction of Sgpl1 activity and analyzed them with respect to sphingolipid levels, T-cell distribution, and response in models of inflammation. PRINCIPAL FIN
View details →Failed Experiment ReportOpen accessMedicine
Christian Theilacker, Andrea Kropec, Felix Hammer et al. · 2012 · The Journal of Infectious Diseases
Type 1 lipoteichoic acid (LTA) is present in many clinically important gram-positive bacteria, including enterococci, streptococci, and staphylococci, and antibodies against LTA have been shown to opsonize nonencapsulated Enterococcus…
View details →Negative / Null Result ReportOpen accessMaterials Science
Elisabet Martí Coma-Cros, Alexandre Lancelot, María San Anselmo et al. · 2019 · Biomaterials Science
Biomaterials for antimalarial drug transport still need to be investigated in order to attain nanocarriers that can tackle essential issues related to malaria treatment, e.g. complying with size requirements and targeting specificity for their entry into Plasmodium-infected red blood cells (pRBCs), and limiting premature drug elimination or drug resistance evolution. Two types of dendritic macromolecule that can form vehicles suitable for antimalarial drug transport are herein explored. A new hybrid dendritic-linear-dendritic block copolymer based on Pluronic® F127 and amino terminated 2,2'-bi
View details →Negative / Null Result ReportOpen accessNursing
Gisele P. Oliveira, Cristina Márcia Dias, Paolo Pelosi et al. · 2010 · Anais da Academia Brasileira de Ciências
Glutamine (Gln) is an important energy source and has been used as a supplementary energy substrate. Furthermore, Gln is an essential component for numerous metabolic functions, including acid-base homeostasis, gluconeogenesis, nitrogen…
View details →Negative / Null Result ReportOpen accessMedicine
Phitsinee Thipubon, Chairat Uthaipibull, Sumalee Kamchonwongpaisan et al. · 2015 · Malaria Journal
BACKGROUND: Iron is an essential micronutrient required by all living organisms including malaria parasites (Plasmodium spp.) for many biochemical reactions, especially growth and multiplication processes. Therefore, malaria parasite needs to take up the iron from outside or/and inside the parasitized red blood cells (PRBC). Iron chelators are widely used for the treatment of thalassaemia-related iron overload and also inhibit parasite growth at levels that are non-toxic to mammalian cells. METHODS: Inhibitory effect of 1-(N-acetyl-6-aminohexyl)-3-hydroxy-2-methylpyridin-4-one (CM1) and green
View details →Negative / Null Result ReportOpen accessMedicine
Michael Mullerad, Jonatan R. A. Aguinaga, Tareq Aro et al. · 2017 · Rambam Maimonides Medical Journal
OBJECTIVE: High-power Holmium Laser (120H) has a unique modulated pulse mode, Moses™ technology. Moses technology modulates the laser pulse to separate the water (vapor bubble), then deliver the remaining energy through the bubble. Proprietary laser fibers were designed for the Moses technology. Our aim was to compare stone lithotripsy with and without the Moses technology. METHODS: We designed a questionnaire for the urologist to fill immediately after each ureteroscopy in which the Lumenis 120H was used. We compared procedures with (n=23) and without (n=11) the use of Moses technology. Surge
View details →Negative / Null Result ReportOpen accessSocial Sciences
Mary Burns · 2013 · International Journal of Emerging Technologies in Learning (iJET)
The question of whether computers have positively or negatively impacted student learning is still hotly contested in educational technology circles, particularly in the area of international development, by proponents and critics of technology in education. Overall, research still provides conflicting answers to this question. Nonetheless, the abundant research on effective school change and innovation implementation points to practices which those who promote technology in schools should tap. This paper outlines the long-term structural conditions that can lead to the deep change technology
View details →Negative / Null Result ReportOpen accessEarth and Planetary Sciences
George B. McManus, Donald M. Schoener, Katharine Haberlandt · 2012 · Frontiers in Microbiology
Simultaneous use of both heterotrophic and autotrophic metabolism ("mixotrophy") is common among protists. Strombidium rassoulzadegani is a planktonic mixotrophic marine ciliate that saves chloroplasts from its algal food and obtains a nutritional subsidy via photosynthesis. Cultures from the northeast, northwest, and southwest Atlantic Ocean show similar numerical response parameters (maximum growth rate, food concentration at which growth is half its maximum, and threshold food concentration for growth), and some isolates have been maintained in vitro for over 3 years. This ciliate grows equ
View details →Negative / Null Result ReportOpen accessMedicine
Florence T.H. Wu, Ping Xu, Annabelle Chow et al. · 2018 · British Journal of Cancer
There are phase 3 clinical trials underway evaluating anti-PD-L1 antibodies as adjuvant (postoperative) monotherapies for resectable renal cell carcinoma (RCC) and triple-negative breast cancer (TNBC); in combination with antiangiogenic VEGF/VEGFR2 inhibitors (e.g., bevacizumab and sunitinib) for metastatic RCC; and in combination with chemotherapeutics as neoadjuvant (preoperative) therapies for resectable TNBC. This study investigated these and similar clinically relevant drug combinations in highly translational preclinical models of micro- and macro-metastatic disease that spontaneously de
View details →Negative / Null Result ReportOpen accessMedicine
L. Kavalieris, P.J. O’Sullivan, James M. Suttie et al. · 2015 · BMC Urology
BACKGROUND: Hematuria can be symptomatic of urothelial carcinoma (UC) and ruling out patients with benign causes during primary evaluation is challenging. Patients with hematuria undergoing urological work-ups place significant clinical and financial burdens on healthcare systems. Current clinical evaluation involves processes that individually lack the sensitivity for accurate determination of UC. Algorithms and nomograms combining genotypic and phenotypic variables have largely focused on cancer detection and failed to improve performance. This study aimed to develop and validate a model inc
View details →Negative / Null Result ReportOpen accessDecision Sciences
Chris Lu, Cong Lu, R. T. Lange et al. · 2026 · Nature
Abstract The automation of science is a long-standing ambition in artificial intelligence (AI) research 1,2 . Although the community has made substantial progress in automating individual components of the scientific process, a system that autonomously navigates the entire research life cycle—from conception to publication—has remained out of reach. Here we present a pipeline for automating the entire scientific process end to end. We present The AI Scientist, which creates research ideas, writes code, runs experiments, plots and analyses data, writes the entire scientific manuscript, and perf
View details →Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology
Klaudia Jomová, Suliman Yousef Alomar, Richard Valko et al. · 2025 · Archives of Toxicology
Abstract Cellular systems responsible for the formation and removal of reactive oxygen species (ROS), functioning within physiological limits, are essential for maintaining intracellular redox balance. This state is known as oxidative eustress. Key redox signaling molecules, such as superoxide anion radical (O 2 •— ) and hydrogen peroxide (H 2 O 2 ), operate at nanomolar concentrations and are produced by NADPH oxidases (regulated by various factors), the mitochondrial electron transport chain (ETC), and numerous enzymes. In addition, cell signaling is influenced by nitric oxide (NO • ) and re
View details →Negative / Null Result ReportOpen accessNursing
Mohamad Wessam Alnouri, Kenneth Anthony Roquid, Rémy Bonnavion et al. · 2024 · Proceedings of the National Academy of Sciences
Inflammation is a protective response to pathogens and injury. To be effective it needs to be resolved by endogenous mechanisms in order to avoid prolonged and excessive inflammation, which can become chronic. Specialized pro-resolving mediators (SPMs) are a group of lipids derived from omega-3 fatty acids, which can induce the resolution of inflammation. How SPMs exert their anti-inflammatory and pro-resolving effects is, however, not clear. Here, we show that SPMs such as protectins, maresins, and D-series resolvins function as biased positive allosteric modulators (PAM) of the prostaglandin
View details →Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology
Youlu Chen, Yong Zeng, Xiaowei Zhu et al. · 2020 · Bioactive Materials
Compared with paclitaxel, sirolimus has been more used in the treatment of vascular restenosis gradually as an anti-proliferative drug, but few basic studies have elucidated its mechanism. The anti-proliferative effects of sirolimus or…
View details →Negative / Null Result ReportOpen accessHealth Professions
Junko Ueshima, Akio Shimizu, Keisuke Maeda et al. · 2022 · Journal of the American Medical Directors Association
This position paper prepared by the Japanese Working Group on Integrated Nutrition for Dysphagic People (JWIND) aims to summarize the need for nutritional management in adult patients with dysphagia, the issues that nutrition professionals should address, and the promising approaches as well as to propose a vision for the future of nutritional care for adult patients with dysphagia. JWIND is a joint certification system recognized by the Japan Dietetic Association and the Japanese Society of Dysphagia Rehabilitation; its members are mostly experts known as "Certified Specialist of Registered D
View details →Negative / Null Result ReportOpen accessMedicine
Hao Chen, Donghang Zheng, Jeff Abbott et al. · 2013 · Antimicrobial Agents and Chemotherapy
Lethal viral infections produce widespread inflammation with vascular leak, clotting, and bleeding (disseminated intravascular coagulation [DIC]), organ failure, and high mortality. Serine proteases in clot-forming (thrombotic) and…
View details →Negative / Null Result ReportOpen accessMedicine
Yan Sun, Ying Cheng, Xuezhi Hao et al. · 2016 · BMC Cancer
BACKGROUND: Extensive-disease small-cell lung cancer (ED-SCLC) is characterized by rapid progression and relapse, despite high initial response rates to chemotherapy. The primary objective of this trial was to demonstrate the non-inferiority of amrubicin and cisplatin (AP) combination therapy compared with the standard first-line regimen of etoposide and cisplatin (EP) for previously untreated ED-SCLC in a Chinese population. When non-inferiority was verified, the objective was switched from non-inferiority to superiority. METHODS: From June 2008 to July 2010, 300 patients were enrolled and ra
View details →Negative / Null Result ReportOpen accessMedicine
Abigail T. Berman, Leslie A. Litzky, Virginia A. LiVolsi et al. · 2011 · Cancer
BACKGROUND: The clinical benefit of postoperative mediastinal radiation for completely resected Masaoka stage 2 thymoma remains controversial. Due to its indolent nature and infrequent recurrences, no study has definitively determined the…
View details →Negative / Null Result ReportOpen accessMedicine
Raffaele Di Fenza, Naman S. Shetty, Stefano Gianni et al. · 2023 · American Journal of Respiratory and Critical Care Medicine
Abstract Rationale The effects of high-dose inhaled nitric oxide on hypoxemia in coronavirus disease (COVID-19) acute respiratory failure are unknown. Objectives The primary outcome was the change in arterial oxygenation (PaO2/Fi O2) at 48…
View details →Negative / Null Result ReportOpen accessMedicine
Mauro Giovanni Carta, Maria Efisia Lecca, Luca Saba et al. · 2015 · BMC Psychiatry
BACKGROUND: To compare the six-month outcome on mood, cognition and quality of life (QoL) in patients with severe carotid atherosclerosis (CA) who underwent carotid endarterectomy (CEA) with subjects who refused treatment. METHODS: Cohort study on consecutive inpatients with CA (stenosis ≥ 50 %) (N = 46; age 72.56 ± 7.26; male 65.2 %). Intervention cohort: subjects who decided to undergo CEA (N = 35); Control cohort patients who refused CEA (N = 11). DSM-IV-Psychiatric diagnosis made by clinicians using interviews, QoL measured by Short Form Health Survey (SF-12); cognitive performance by WAIS
View details →Negative / Null Result Report
R Kelly Garrett, Shannon Poulsen · 2019 · Journal of Computer-Mediated Communication
Abstract We present two studies evaluating the effectiveness of flagging inaccurate political posts on social media. In Study 1, we tested fact-checker flags, peer-generated flags, and a flag indicating that the publisher self-identified…
View details →Negative / Null Result ReportOpen accessMedicine
Tracy L. Diamond, Winnie Ngo, Min Xu et al. · 2022 · Antimicrobial Agents and Chemotherapy
Islatravir (ISL) is a nucleoside reverse transcriptase translocation inhibitor (NRTTI) that inhibits human immunodeficiency virus (HIV) reverse transcription by blocking reverse transcriptase (RT) translocation on the primer:template. ISL…
View details →Replication FailureOpen accessNeuroscience
Beth Lloyd, Franz Wurm, Roy de Kleijn et al. · 2023 · Brain stimulation
BackgroundTranscutaneous auricular vagus nerve stimulation (taVNS) has been tested as a potential treatment for pharmaco-resistant epilepsy and depression. Its clinical efficacy is thought to depend on taVNS-induced activation of the locus coeruleus and other neuromodulator systems. However, unlike for invasive VNS in rodents, there is little evidence for an effect of taVNS on noradrenergic activity.ObjectiveWe attempted to replicate recently published findings by Sharon et al. (2021), showing that short bursts of taVNS transiently increased pupil size and decreased EEG alpha power, two correl
View details →Negative / Null Result Report
Malin Hildebrandt, Sabine Koch, Thomas Fuchs · 2016 · Behavioral Sciences
The treatment of deficits in social interaction, a shared symptom cluster in persons with schizophrenia (negative symptoms) and autism spectrum disorder (DSM-5 A-criterion), has so far remained widely unsuccessful in common approaches of…
View details →Negative / Null Result ReportOpen accessNeuroscience
Shaomin Peng, Geliang Gan, Caihong Qiu et al. · 2013 · Stem Cells Translational Medicine
Retinal degenerations are a major cause of impaired vision in the elderly. Degenerations originate in either photoreceptors or the retinal pigment epithelium (RPE). RPE forms the outer blood-retinal barrier and functions intimately with…
View details →Negative / Null Result ReportPsychology
Lauren A. Stutts, Kerstin K. Blomquist · 2018 · International Journal of Eating Disorders
OBJECTIVE: The present study employed a longitudinal design to examine the moderating role of self-compassion in the relationship between weight/shape concerns and the outcomes of eating pathology and stress in a diverse college student…
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