e-ISSN: Pending

Browse the failure-mode index

20,201 real negative results, null findings, and replication failures · Negative / Null Result Report. Search the index →

WASTE indexes published research — it does not host or republish full papers. Each entry is a metadata record compiled from open scholarly databases; the abstract is shown in full only where the paper is openly licensed, otherwise a short excerpt under fair use. Classifications are automated and approximate.

Negative / Null Result ReportOpen accessEngineering

Analysis of water distribution network under pressure-deficient conditions through emitter setting

Suribabu Conety Ravi, Neelakantan Thurvas Renganathan, Sivakumar Perumal et al. · 2019 · Drinking water engineering and science

Abstract. Pressure-driven analysis (PDA) of water distribution networks necessitates an assessment of the supplying capacity of a network within the minimum and required pressure ranges. Pressure-deficient conditions happen due to the uncertainty of nodal demands, failure of electromechanical components, diversion of water, aging of pipes, permanent increase in the demand at certain supply nodes, fire demand, etc. As the demand-driven analysis (DDA) solves the governing equations without any bound on pressure head, it fails to replicate the real scenario, particularly when the network experien

View details →
Negative / Null Result ReportBiochemistry, Genetics and Molecular Biology

Sex‐dependent associations of genetic variants identified by GWAS with indices of adiposity and obesity risk in a Chinese children population

Bo Xi, Yue Shen, Kathleen H. Reilly et al. · 2012 · Clinical Endocrinology

OBJECTIVE: Recent genome-wide association studies have identified a few single nucleotide polymorphisms (SNPs), which are associated with body mass index (BMI)/obesity. This study aimed to examine the identified associations among a…

View details →
Negative / Null Result ReportOpen accessSocial Sciences

Investigator Characteristics and Respondent Behavior in Online Surveys

Ariel White, Anton Strezhnev, Christopher Lucas et al. · 2018 · Journal of Experimental Political Science

Abstract Prior research demonstrates that responses to surveys can vary depending on the race, gender, or ethnicity of the investigator asking the question. We build upon this research by empirically testing how information about…

View details →
Negative / Null Result ReportOpen accessEnvironmental Science

Montpellier broom (Genista monspessulana) and Spanish broom (Spartium junceum) in South Africa: An assessment of invasiveness and options for management

Sjirk Geerts, Pieter Willem Botha, Vernon Visser et al. · 2013 · South African Journal of Botany

The legumes (Fabaceae) Genista monspessulana and Spartium junceum are major invaders in several other parts of the world, but not yet so in South Africa. We determine their current distributions in South Africa at different spatial scales, assess population structure (soil seed banks and size at reproduction) evaluate current management activities, and provide recommendations for control (including assessing the feasibility of nation-wide eradication). G. monspessulana occurs at nine localities in three quarter-degree cells, covering a total of 22.7 ha. S. junceum is much more widespread, occu

View details →
Negative / Null Result ReportOpen accessNeuroscience

Perivascular spaces in the centrum semiovale at the beginning of the 8th decade of life: effect on cognition and associations with mineral deposition

María Valdés Hernández, Lucia Ballerini, Andreas Glatz et al. · 2019 · Brain Imaging and Behavior

Brain iron deposits (IDs) are indicative of microvessel dysfunction which may predispose to small vessel disease (SVD) brain damage and worsen cognition later in life. Visible perivascular spaces in the centrum semiovale (CSO-PVS) are SVD features linked with microvessel dysfunction. We examined possible associations of CSO-PVS volume and count with brain IDs and cognitive abilities in 700 community-dwelling individuals from the Lothian Birth Cohort 1936 who underwent detailed cognitive testing and multimodal brain MRI at mean age 72.7 years. Brain IDs were assessed automatically followed by m

View details →
Negative / Null Result ReportOpen accessNeuroscience

Elevated decision uncertainty and reduced avoidance drives in depression, anxiety and substance use disorders during approach–avoidance conflict: a replication study

Ryan Smith, Claire A. Lavalley, S Taylor et al. · 2023 · Journal of Psychiatry and Neuroscience

BACKGROUND: Decision-making under approach-avoidance conflict (AAC; e.g., sacrificing quality of life to avoid feared outcomes) may be affected in multiple psychiatric disorders. Recently, we used a computational (active inference) model…

View details →
Negative / Null Result Report

Significant Associations of Neurological Complications of Herpes Zoster With Stroke in Rheumatoid Arthritis Patients

Tsai‐Ling Liao, Ching‐Heng Lin, Hsin‐Hua Chen et al. · 2017 · Journal of the American Heart Association

Background Accumulating evidence suggests an increased risk of stroke after herpes zoster ( HZ ). This risk is elevated in immunocompromised patients. The incidence of HZ in Asia is higher than in Western countries. However, the…

View details →
Negative / Null Result Report

Small-Sided Games in Elite Football: Practical Solutions to Replicate the 4-min Match-Derived Maximal Intensities

Andrea Riboli, Fabio Esposito, Giuseppe Coratella · 2022 · Journal of Strength & Conditioning Research

Abstract Riboli, A, Esposito, F, and Coratella, G. Small-sided games in elite football: practical solutions to replicate the 4-min match-derived maximal intensities. J Strength Cond Res 37(2): 366–374, 2023—The purpose of the study was to…

View details →
Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology

Human essential hypertension: no significant association of polygenic risk scores with antihypertensive drug responses

Heini Sánez Tähtisalo, Sanni Ruotsalainen, Nina Mars et al. · 2020 · Scientific Reports

Polygenic risk scores (PRSs) for essential hypertension, calculated from > 900 genomic loci, were recently found to explain a significant fraction of hypertension heritability and complications. To investigate whether variation of hypertension PRS also captures variation of antihypertensive drug responsiveness, we calculated two different PRSs for both systolic and diastolic blood pressure: one based on the top 793 independent hypertension-associated single nucleotide polymorphisms and another based on over 1 million genome-wide variants. Using our pharmacogenomic GENRES study comprising four

View details →
Negative / Null Result ReportOpen accessEnergy

Ecological Stoichiometry Meets Ecological Engineering: Using Polycultures to Enhance the Multifunctionality of Algal Biocrude Systems

Casey M. Godwin, David C. Hietala, Aubrey R. Lashaway et al. · 2017 · Environmental Science & Technology

For algal biofuels to be economically sustainable and avoid exacerbating nutrient pollution, algal cultivation and processing must maximize rates of biofuel production while simultaneously minimizing the consumption of nitrogen (N) and…

View details →
Negative / Null Result ReportOpen accessMedicine

Preoperative palsy score has no significant association with survival in non-small-cell lung cancer patients with spinal metastases who undergo spinal surgery

Yen‐Jen Chen, Hsien‐Te Chen, Horng‐Chaung Hsu · 2015 · Journal of Orthopaedic Surgery and Research

BACKGROUND: Survival is a key factor physicians consider when selecting a treatment modality for the treatment of spinal metastases. Various assessment systems can predict length of survival and facilitate selection of the most appropriate treatment. Spinal palsy is a prognostic parameter in the Tokuhashi scoring system but not in the Tomita scoring system. A limitation of these scoring systems is that studies of them have included different tumor types. The aim of this study was to evaluate the usefulness of preoperative neurological status as a prognostic factor in non-small-cell lung cancer

View details →
Negative / Null Result Report

Dissimilarity–Overlap analysis of replicate enrichment communities

Jean C C Vila, Yang-Yu Liu, Alvaro Sanchez · 2020 · The ISME Journal

Abstract The taxonomic composition of microbial communities can vary substantially across habitats and within the same habitat over time. Efforts to build quantitative and predictive models of microbial population dynamics are underway,…

View details →
Negative / Null Result Report

‘Virtual Parrots’ Confirm Mating Preferences of Female Budgerigars

Marin L. Moravec, Georg F. Striedter, Nancy T. Burley · 2010 · Ethology

Abstract Parrots comprise one of the several taxa in which life‐long learning of new vocal signals used in intraspecific communication is known to occur routinely. The functions and evolutionary bases of this ability are largely unknown.…

View details →
Negative / Null Result ReportOpen accessMedicine

Significant association between polymorphism of the erythropoietin gene promoter and myelodysplastic syndrome

Wanlong Ma, Hagop M. Kantarjian, Ke Zhang et al. · 2010 · BMC Medical Genetics

BACKGROUND: Myelodysplastic syndrome (MDS) may be induced by certain mutagenic environmental or chemotherapeutic toxins; however, the role of susceptibility genes remains unclear. The G/G genotype of the single-nucleotide polymorphism (SNP) rs1617640 in the erythropoietin (EPO) promoter has been shown to be associated with decreased EPO expression. We examined the association of rs1617640 genotype with MDS. METHODS: We genotyped the EPO rS1617640 SNP in 189 patients with MDS, 257 with acute myeloid leukemia (AML), 106 with acute lymphoblastic leukemia, 97 with chronic lymphocytic leukemia, 353

View details →
Negative / Null Result Report

Assessment of T-History Method Variants to Obtain Enthalpy–Temperature Curves for Phase Change Materials With Significant Subcooling

Katherine D’Avignon, Michaël Kummert · 2015 · Journal of Thermal Science and Engineering Applications

To assess the potential of thermal energy storage systems using phase change materials (PCMs), numerical simulations rely on an enthalpy–temperature curve (or equivalent specific heat curve) to model the PCM thermal storage behavior. The…

View details →
Negative / Null Result Report

Defining the Minimal Clinically Important Difference for Patients With Vestibular Schwannoma: Are all Quality-of-Life Scores Significant?

Panagiotis Kerezoudis, Kathleen J Yost, Nicole M Tombers et al. · 2018 · Neurosurgery

Abstract BACKGROUND The diagnosis of vestibular schwannomas (VS) is associated with reduced patient quality of life (QOL). Minimal clinically important difference (MCID) was introduced as the lowest improvement in a patient-reported…

View details →
Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology

Propofol‑induced miR‑125a‑5p inhibits the proliferation and metastasis of ovarian cancer by suppressing LIN28B

Juan Zeng, Yukun Li, Feifei Quan et al. · 2020 · Molecular Medicine Reports

Propofol, a commonly used intravenous anesthetic agent during surgery, has relatively widespread pharmacological actions. Previous studies have reported that propofol may act as an antitumor drug in several cancer types, such as pancreatic…

View details →
Negative / Null Result ReportOpen accessMedicine

First exposure to rituximab is associated to high rate of anti-drug antibodies in systemic lupus erythematosus but not in ANCA-associated vasculitis

Francesca Faustini, Nicky Dunn, Nastya Kharlamova et al. · 2021 · Arthritis Research & Therapy

BACKGROUND: Anti-drug antibodies (ADAs) can impact on the efficacy and safety of biologicals, today used to treat several chronic inflammatory conditions. Specific patient groups may be more prone to develop ADAs. Rituximab is routinely used for ANCA-associated vasculitis (AAV) and as off-label therapy for systemic lupus erythematosus (SLE), but data on occurrence and predisposing factors to ADAs in these diseases is limited. OBJECTIVES: To elucidate the rate of occurrence, and risk factors for ADAs against rituximab in SLE and AAV. METHODS: ADAs were detected using a bridging electrochemilumi

View details →
Negative / Null Result ReportOpen accessMedicine

Results From the German Fungal Keratitis Registry: Significant Differences Between Cases With and Without a History of Contact Lens Use

Mathias Roth, Christoph Holtmann, Loay Daas et al. · 2021 · Cornea

PURPOSE: Fungal keratitis (FK) is a serious ophthalmic disease with a potentially devastating outcome that seems to be increasing in recent years. The use of contact lenses (CLs) was evaluated as a risk factor for FK to determine possible…

View details →
Negative / Null Result ReportOpen accessNeuroscience

MTEP, a Selective mGluR5 Antagonist, Had a Neuroprotective Effect but Did Not Prevent the Development of Spontaneous Recurrent Seizures and Behavioral Comorbidities in the Rat Lithium–Pilocarpine Model of Epilepsy

A. V. Dyomina, Anna A. Kovalenko, Maria V. Zakharova et al. · 2022 · International Journal of Molecular Sciences

Metabotropic glutamate receptors (mGluRs) are expressed predominantly on neurons and glial cells and are involved in the modulation of a wide range of signal transduction cascades. Therefore, different subtypes of mGluRs are considered a promising target for the treatment of various brain diseases. Previous studies have demonstrated the seizure-induced upregulation of mGluR5; however, its functional significance is still unclear. In the present study, we aimed to clarify the effect of treatment with the selective mGluR5 antagonist 3-[(2-methyl-1,3-thiazol-4-yl)ethynyl]-pyridine (MTEP) on epile

View details →
Negative / Null Result ReportOpen accessMedicine

Effect of Concurrent Chemoradiation With Celecoxib vs Concurrent Chemoradiation Alone on Survival Among Patients With Non–Small Cell Lung Cancer With and Without Cyclooxygenase 2 Genetic Variants

Nan Bi, Jun Liang, Zongmei Zhou et al. · 2019 · JAMA Network Open

Importance: Treatment of locally advanced non-small cell lung cancer (NSCLC) remains challenging. The rationale of combining a cyclooxygenase 2 (COX-2) inhibitor with concurrent chemoradiation (CCRT) was based on results of preclinical research and prospective clinical studies; however, no randomized clinical trial has provided evidence of a direct comparison with CCRT alone. Objective: To determine the effect of combined selective COX-2 inhibition with standard CCRT on survival among patients with unresectable stage III NSCLC. Design, Setting, and Participants: A single-center, open-label, ra

View details →
Negative / Null Result ReportOpen accessImmunology and Microbiology

The Success Rate of New Drug Development in Clinical Trials: Crohn’s Disease

Jayson L. Parker, Jillian Clare Köhler · 2010 · Journal of Pharmacy & Pharmaceutical Sciences

PURPOSE: To determine the risk of drug failure during clinical trial testing in Crohn's disease and determine what steps can be taken to improve outcomes. This is the first study to quantify such risk for a single disease. METHODS: Moderate to severe Crohn's disease was investigated by reviewing press releases from 1998 to June 2008. Clinical trial failure causes were classified as commercial or clinical and compared with industry expectations. The risk of failure was also reviewed based on whether the compound was a small molecule drug or a biologic. Lastly, the role of the sponsor was examin

View details →