A searchable index of real negative results, null findings, and replication failures from the published literature — so you can learn what didn't work before repeating it.
WASTE indexes published research — it does not host or republish full papers. Each entry is a metadata record (title, authors, DOI) compiled from open scholarly databases, with the abstract shown in full only where the paper is openly licensed (e.g. Creative Commons); otherwise a short excerpt is shown for reference under fair use. WASTE classifies each work by failure type; classifications are automated and approximate.
19906 results in Negative / Null Result Report · page 620 of 664
B. Selivany, A. Yousif · 2020 · The Journal Of Duhok University
Aim : The study aimed to compare Shaping ability of WaveOne Gold, Reciproc Blue and 2Shape NiTi systems having different design and metallurgic properties. Method : Forty five extracted human single root with 10 mm root length were…
P. Subramaniam, N. Nandan · 2011 · Contemporary Clinical Dentistry
Introduction: Prevention of dental caries is one of the main strategies in contemporary pediatric dental practice. Mouth rinses are widely used as an adjunct to maintain oral hygiene. It is important for these products to be effective and…
C. E. Monera Lucas, J. Escolano Serrano, C. T. Tarazona Jaimes et al. · 2022 · Archivos de la Sociedad Española de Oftalmología
PURPOSE To evaluate the reproducibility in the measurement of ocular biometric parameters using a new swept-source optical coherence tomographer and its comparability with an optical low coherence reflectometry biometer. DESIGN An…
J. Ortiz, M. Fernández‐Arquero, E. Urcelay et al. · 2006 · BMC Medical Genetics
BackgroundIgA deficiency (IgAD) is the most common primary immunodeficiency in Caucasians. Genetic and environmental factors are suspected to be involved in the development of the disease. Interleukin-10 (IL-10) is a cytokine with…
C. Villanueva · 2019 · Journal of Pediatric Urology
INTRODUCTION AND OBJECTIVE The assessment of penile curvature is a key component of hypospadias surgery, as it often determines if a one- or two-stage procedure should be performed. The objective of this study was to compare unaided visual…
Douk Kwon, C. Rah, Byung-Chang Kim et al. · 2024 · Annals of Surgical Treatment and Research
Purpose Adrenocortical carcinoma (ACC) is a rare primary carcinoma originating in the adrenal gland with a poor prognosis and a high recurrence rate. This study evaluated the risk factors associated with recurrence in patients with early…
Anita Metzinger, Leith C. R. Meyer, P. Buss et al. · 2024 · Journal of Wildlife Diseases
Abstract: Translocation and dehorning are common and important practices for rhinoceros management and conservation. It is not known if dehorning causes a stress response or negatively affects rhinoceroses during transport. Twenty-three…
Jukka Kopra, E. Litonius, P. Pekkarinen et al. · 2023 · Intensive Care Medicine Experimental
Background In refractory out-of-hospital cardiac arrest, transportation to hospital with continuous chest compressions (CCC) from a chest compression device and ventilation with 100% oxygen through an advanced airway is common practice.…
A. Elgebaly · 2018 · Anesthesiology Research and Practice
Aim The aim of the study was to assess the nitroglycerin patch as a new additive to Bier's block and its impact on the effects and dose of lidocaine. Methods Forty patients of each sex belonging to ASA I or II underwent elective tendon…
D. Aparicio-López, J. Ramia, C. Villodre et al. · 2025 · Journal of Clinical Medicine
Background/Objectives: Like many other countries, the management of pancreatic cancer in Spain has developed in a fragmented manner. This study analyzes clinical outcomes related to patient volume at different centers after left…
Danyuan Xu, K. Lai, Jia-xing Xie et al. · 2011 · European Respiratory Journal
Background: Eosinophilic bronchitis (EB) is a common cause of chronic cough. Inhaled corticosteroids can improve sputum eosinophilia and cough severity. However, the treatment course with inhaled corticosteroids for EB is unkown.…
H. Edrees, A. Y. Siddiqui, M. M. Almousa et al. · 2021 · Journal of Evolution of Medical and Dental Sciences
BACKGROUND Necrotic immature permanent teeth undergoing Regenerative Endodontic Treatment (RET) are subjected to functional forces that might lead to their fracture before achieving apical closure. This study compared the fracture strength…
Susan Keefe, Carrie Baldwin, Elda Fisher et al. · 2025 · Journal of oral and maxillofacial surgery
BACKGROUND Limited comprehensive historical data exist comparing male and female residents in oral and maxillofacial surgery (OMS) residency programs. This gap underscores the need to examine sex-based differences to guide equitable…
G. Murugan, Sheeba Sharon R, A. K. Krishna Kumar · 2023 · International Journal of Health Sciences and Research
BACKGROUND: Low back pain (LBP) is one of the most common causes of disability among the general population. Lumbar traction is an application of distraction force to produce a separation of the joint and elongate the soft tissues.…
Norman Rudhumbu, Patience Kelebogile Mudau · 2022 · International Journal of Learning, Teaching and Educational Research
One of the major strategies that universities use to ensure quality in education is the use of entry requirements as a screening procedure to ensure that only those considered to be the ‘best’ students are admitted. Whether these so-called…
A. Loguércio, L. Tay, D. R. Herrera et al. · 2015 · Brazilian Oral Research
The study aimed to evaluate the effectiveness of in-office bleaching and associated tooth sensitivity on application of nano-calcium phosphate paste as desensitizing agent. Bleaching was performed with 35% hydrogen peroxide gel in 40…
Paul H Doan, David M Handojo, Shivani Parihar et al. · 2024 · Journal of the American Podiatric Medical Association (Print)
BACKGROUND A rounded lateral first metatarsal head shape is associated with higher rates of hallux abducto valgus recurrence following corrective surgery; however, the effect of the lateral first metatarsal head shape on the hallux…
F. Gutiérrez-Agüera, Virginia C. Rodríguez-Cortez, P. Petazzi et al. · 2021 · Frontiers in Cell and Developmental Biology
The generation of transplantable hematopoietic stem cells (HSCs) from human pluripotent stem cells (hPSCs) remains challenging. Current differentiation protocols from hPSCs generate mostly hematopoietic progenitors of the primitive…
C. M. Esposito, F. Legnani, J. Barkin et al. · 2026 · International journal of psychiatry in clinical practice
OBJECTIVE Major depressive disorder (MDD) is a prevalent disabling condition, with psychotic features complicating its course and management. Purpose of the study is to identify clinical and biochemical factors differentiating psychotic…
Kienka, Kienka, · 2026 · Journal of Professional Counselling
One of the rapidly growing global concerns today is the abuse of various substances that are linked with mental health with significant threat to the psychosocial challenges common in Nigeria. One of the pertinent problems is the…
Mary Coletta mcdonough Newkome · 1974
The major purpose of this study was to determine if there was a significant difference in readiness test scores between students who participated in a structured kindergarten program and those who participated in an unstructured program.…
Xin Yuan, Kai Chen, Jing Yuan et al. · 2023 · International Journal of Antimicrobial Agents
BACKGROUND Inappropriate antimicrobial use is common for patients undergoing surgery. Whether a multifaceted computerized antimicrobial stewardship program is effective and safe in reducing inappropriate antimicrobial use in surgical…
E. Juszczuk-Kubiak, R. Starzyński, T. Sakowski et al. · 2012 · Molecular Biology Reports
Myocyte enhancer factor 2D (MEF2D), a product of the MEF2D gene, belongs to the myocyte enhancer factor 2 (MEF2) protein family which is involved in vertebrate skeletal muscle development and differentiation during myogenesis. The aim of…
H. Fujino, Soojung Lee, Shigeki Suzuki et al. · 2011 · Journal of Veterinary Medical Science
The adhesion-preventing effect of trehalose in visceral organs was evaluated in a rabbit model. All rabbits underwent a hysterotomy, during which mild abrasion and desiccation was induced on the surfaces of visceral organs. In the control…
Yeun-Hwa Gu, T. Yamasita, K. Kang · 2018 · Toxicological Research
As a part of general toxicity studies of Enterococcus Faecalis 2001 (EF 2001) prepared using heat-treatment bacillus mort body EF 2001 in mice, this study examined the toxicity of EF 2001 in single and repeated administrations following…
Dongchun Tang, Weicong Cai, Yang Gao et al. · 2020 · Scientific Reports
This prospective study was to describe the incidence and characteristics of physical activity-related injuries (PARI) among college students in southern China. Online questionnaires and telephone interviews were combined to investigate the…
M. Bağcıoğlu, C. Surcel, S. Ozcan et al. · 2017 · Archivio Italiano di Urologia e Andrologia
OBJECTIVE Androgen deprivation therapy (ADT) is commonly used as a first-line treatment for locally advanced and metastatic prostatic cancer (Pca). There is no consensus about which alternative treatment should be used after the failure of…
Kendall Kling, Patrick Janulis, A. Demonbreun et al. · 2023 · Frontiers in Immunology
Background Understanding the immune response to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccination will enable accurate counseling and inform evolving vaccination strategies. Little is known about antibody response…
Yuanchun Liu, Wanyi Huang, Huiyang Wang et al. · 2023 · PeerJ
Bone marrow-derived mesenchymal stem cells (BMSCs) are increasingly being used in bone marrow transplantation (BMT) to enable homing of the allogeneic hematopoietic stem cells and suppress acute graft versus host disease (aGVHD). The aim…
Rafaela Machado dos Santos, Simone Fernanda Nedel Pértile, Marcos Barbosa Ferreira et al. · 2024 · Ensaios e Ciência: Ciências Biológicas, Agrárias e da Saúde
Abstract The aim of this study was to evaluate the effect of a feed additive for feedlot Pantaneiro lambs on weight gain, dry matter intake, carcass and meat characteristics, in addition to the comparison between males and females. Eleven…