e-ISSN: Pending

Browse the failure-mode index

19,906 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 accessBiotechnology

A Mark-Release-Recapture Study to Estimate Field Performance of Imported Radio-Sterilized Male Aedes albopictus in Albania

Enkelejda Velo, Fabrizio Balestrino, Fabrizio Balestrino et al. · 2022 · Frontiers in Bioengineering and Biotechnology

The pathogen transmitting Aedes albopictus mosquito is spreading rapidly in Europe, putting millions of humans and animals at risk. This species is well-established in Albania since its first detection in 1979. The sterile insect technique (SIT) is increasingly gaining momentum worldwide as a component of area-wide-integrated pest management. However, estimating how the sterile males will perform in the field and the size of target populations is crucial for better decision-making, designing and elaborating appropriate SIT pilot trials, and subsequent large-scale release strategies. A mark-rel

View details →
Negative / Null Result ReportOpen accessMedicine

Association of eosinophil major basic protein with intraocular lens dislocation in atopic dermatitis

Koji Komatsu, Yoichiro Masuda, Hoshiho Kubota et al. · 2025 · Scientific Reports

Abstract The study aimed to investigate whether eosinophil major basic protein (MBP), which is linked to cataract formation due to lens epithelial cell (LEC) damage in atopic dermatitis (AD), is associated with intraocular lens (IOL) dislocation. This retrospective observational study was conducted at a Medical University Hospital and included 22 eyes (10 AD, 12 non-AD [NAD]) that underwent IOL explantation and fixation. Surgeries were conducted to extract the intraocular lens capsule for morphological evaluations. Quantitative analysis of the MBP staining was conducted using the staining area

View details →
Negative / Null Result ReportOpen accessZoology

The Diet and Sexual Differences of the Caspian Bent-Toed Gecko, Tenuidactylus caspius (Squamata: Gekkonidae), in Northern Iran

Vida Hojati, Reza Babaei Savasari · 2014 · International Journal of Zoology

The Caspian bent-toed gecko, Tenuidactylus caspius, is one of the most common nocturnal lizards of Iran with widespread distribution especially in the northern provinces. This research was done in order to study the diet and sexual dimorphism of this species in Sari County from 5 May to 20 October. During this research, 40 specimens of them including 20 males and 20 females were studied for diet and 140 specimens including 70 adult males and 70 adult females were studied for sexual dimorphism. Prey items identified were insects that belong to 15 species of 8 families and 6 orders. The most com

View details →
Negative / Null Result ReportOpen accessAgriculture

Effect of fish meal replacement with sunflower meal on growth indices and body composition of common carp (Cyprinus carpio) fingerlings

K. Javidrahmdel; H. Allaf noveirian; B. Falahatkar; A. Babakhani lashkan · 2017 · ‬‭Majallah-i ̒Ilmī-i Shīlāt-i Īrān

The present study was conducted to determine the effect of fish meal replacement with sunflower meal on growth performance, feed efficiency and body proximate composition of common carp fingerlings. Five experimental diets with replacement levels of 0, 25, 50, 75 and 100% of fish meal with sunflower meal were formulated with equal protein, fat and energy contents. Fish meal proportion of control diet was 28%. Fish with average weight of 3.03 ± 0.36 g were distributed in 15 fiberglass tanks. After 10 weeks of feeding by experimental diets, growth performance and feed efficiency were evaluated a

View details →
Negative / Null Result ReportOpen accessMedicine (General)

Prevention of Morbidity in Sickle Cell Disease (POMS2a)—overnight auto-adjusting continuous positive airway pressure compared with nocturnal oxygen therapy: a randomised crossover pilot study examining patient preference and safety in adults and children

Jo Howard, Sophie A. Lee, Baba Inusa et al. · 2019 · Trials

Abstract Design This randomised crossover trial compared nocturnal auto-adjusting continuous positive airway pressure (APAP) and nocturnal oxygen therapy (NOT) in adults and children with sickle cell anaemia, with patient acceptability as the primary outcome. Secondary outcomes included pulmonary physiology (adults), safety, and daily pain during interventions and washout documented using tablet technology. Methods Inclusion criteria were age > 8 years and the ability to use an iPad to collect daily pain data. Trial participation was 4 weeks; week 1 involved baseline data collection and week 3

View details →
Negative / Null Result ReportOpen accessMedicine

Comparisons between ultrasonic subgingival debridement with or without manual root planing on clinical parameters improving of periodontitis: a split-mouth randomized clinical trial.

Lin C, Mei YM, Yan Y et al. · 2026 · Head & face medicine

AIM: To evaluate the adjunctive clinical efficacy of manual root planing following ultrasonic subgingival debridement (SD) in the treatment of generalized severe periodontitis. MATERIAL AND METHODS: Twenty-nine patients diagnosed with…

View details →
Negative / Null Result ReportOpen accessMedicine

Sarcopenia and Balance in Community-dwelling Women with Postmenopausal Osteoporosis

Bilinç Doğruöz Karatekin, Şeyhmus Yasin, Yasemin Yumuşakhuylu et al. · 2021 · Bagcilar Medical Bulletin

Objective:Sarcopenia and osteoporosis share common risk factors and biological pathways. In the present study, patients with postmenopausal osteoporosis were screened for sarcopenia using the algorithm proposed by the European Working Group on Sarcopenia in Older People (EWGSOP) and balance impairment was investigated in sarcopenic patients.Method:Fifty three postmenopausal osteoporotic patients were evaluated for sarcopenia as per the algorithm proposed by the EWGSOP. Among the parameters included in the algorithm, gait speed was assessed using the timed up&go test (TUG), Jamar hand dynamomet

View details →
Negative / Null Result ReportOpen accessEducation (General)

Pengaruh Metode Pembelajaran dan Tipe Kepribadian Terhadap Hasil Belajar Bahasa Arab (Studi Eksperimen Pada MAN 1 Semarang)

Nur Maziyah Ulya · 2016 · Nadwa

This study aims to analyze: (1) The difference of students‟ achievement between students studying at cooperative learning class and those studying at conventional learning class; (2) The difference of students‟ achievement between the introvers and the extroverts; (3) The interactive influence between learning method and students‟ personality type toward students‟ achievement in Arabic language. This research used experimental design conducted at MAN 1 Semarang.. The result of this research shows that: (1) There is significant difference in students‟ achievement between students studying at th

View details →
Negative / Null Result ReportOpen accessPharmacy and materia medica

Applying Psychological and Educational Health Models to Determine the Effect of Cognitive and Behavioral Interventions on Tuberculosis Treatment Outcomes in Plateau State, Nigeria

Comfort Nanbam Sariem, Maxwell Patrick Dapar, Nenman Musa Lenka et al. · 2022 · INNOVATIONS in Pharmacy

Background: The prolonged multi-drug treatment regimen for tuberculosis (TB) can lead to non-adherence and unsuccessful treatment outcomes. Educational and psychological health models can be used to design cognitive and behavioral interventions to improve adherence and treatment outcomes. Objective: To determine the effect of cognitive and behavioral interventions on TB treatment outcomes. Methods: The quasi-experimental study conducted in six TB treatment centers involved reinforced medication education and adherence counseling (MEAC), designed from a structured validated psychometric scale.

View details →
Negative / Null Result ReportOpen accessAgriculture (General)

Distribution and Stability of Soil Aggregates over the Fissure Zones in Reclaimed Coal Mining Waste Dumpsite

LI Yexin, LYU Gang, WANG Daohan et al. · 2023 · Guan'gai paishui xuebao

【Objective】 Restoring coal mining waste dumps is a way to alleviate their detrimental impact on environment. In this paper, we present the results of an experimental study on distribution and stability of soil aggregates in a reclaimed coal mining overburden dump. 【Method】 The experiment was carried out at a reclaimed coal mine dump site in a grassland region in northern China. We measured the development of fissures from Zone I (GF) to Zone three (GFIII) in the fissure zone. The composition and distribution soil aggregates in these zones were determined using dry-wet sieve method. Aggregate s

View details →
Negative / Null Result ReportOpen accessVocational rehabilitation. Employment of people with disabilities

Educational environment perception and cognitive load among physical therapy students during e-learning

Zahid Mehmood, Zubair Ahmad, Asad Ullah et al. · 2023 · The Rehabilitation Journal

Background: Understanding students' perception of the educational environment and their cognitive load in this context is crucial for optimizing the effectiveness of e-learning platforms. Objective: To compare educational environment perception and cognitive load in under-graduates Doctor of Physical Therapy (DPT) and post-graduate Master in Science of Physical Therapy (MSPT) students having online learning experiences. Methodology: In this comparative cross-sectional study, data was collected through non-probability convenient sampling from n=274 under-graduates DPT (n=225) and post-graduates

View details →
Negative / Null Result ReportOpen accessArchaeology

Morphological features of the Eneolithic — Early Bronze population as a result of adaptation to the geographical and bioclimatic conditions of the Altai highlands

Solodovnikov K.N., Kravchenko G.G., Rykun M.P. · 2018 · Вестник археологии, антропологии и этнографии

This paper is aimed at scrutinizing the dependence between the morphological features of the Eneolithic — Early Bronze population and the geographical and bioclimatic conditions in the Altai valleys and intermountain basins. Across the territory of the Altai highlands, we have identified several local-territorial groups of archaeological sites dating to the period under study. Most of them belong to the Afanasyevо culture, with the rest being represented by the Kurota, Aragol and Ulita cultural types that have been recently designated from the Afanasyevо culture. For each group, in accordance

View details →
Negative / Null Result ReportOpen accessMedicine

ASSESSMENT OF COMPLETE BLOOD COUNT IN PATIENTS WITH CORONARY ARTERY DISEASE

Qais A. AL-Oqaily · 2016 · The Iraqi Journal of Medical Sciences

Background:Several studies have demonstrated the role of hematological parameters like hemoglobin (Hb), white blood cells (WBC) count and platelet count in the assessment of patients with coronary artery disease; some studies suggest an additional role of platelet indices in the prognosis of patients with coronary artery disease. Objective:To assess complete blood count and platelet indices in patients with coronary artery disease. Methods: Blood sample of 42 newly diagnosed ischemic heart disease patients including 20 patients with myocardial infarction (MI) and 22 patients with unstable angi

View details →
Negative / Null Result ReportOpen accessSurgery

Risk factors associated with secondary displacement in fractures of the humeral greater tuberosity

Qing-Quan Chen, Qing-Quan Chen, Han-Lin Chen et al. · 2025 · Frontiers in Surgery

BackgroundThe incidence of secondary displacement in fractures of the greater tuberosity of the humerus remains high, irrespective of whether conservative or surgical treatment is administered. However, the specific risk factors contributing to secondary displacement of the greater tuberosity of the humerus have not been previously reported. The primary objective of this study was to analyze the risk factors associated with secondary displacement of the greater tuberosity of the humerus and to summarize corresponding guidelines for clinical diagnosis and treatment.MethodsA retrospective analys

View details →
Negative / Null Result ReportOpen accessMedicine

Effect and Mechanism of Swimming Exercise Preconditioning on Neurological Function of Mice with Intracerebral Hemorrhage

LI Yongxu, LIN Libin, LU Taotao et al. · 2023 · 康复学报

ObjectiveTo observe the effect of swimming exercise preconditioning on neurological function and expression levels of brain derived neurotrophic factor (BDNF), serine-threonine kinase (Akt) and peroxisome proliferator-activated receptor-γ coactivator-1α (PGC-1α) proteins in perihematoma tissues of mice with intracerebral hemorrhage (ICH).MethodsA total of 60 male C57BL/6 mice were randomly divided into sham group, ICH 7 d group, SEP+ICH 7 d group (preconditioning group 1), ICH 14 d group and SEP+ICH 14 d group (preconditioning group 2), with 12 cases in each group. The preconditioning group 1

View details →
Negative / Null Result ReportOpen accessDiseases of the musculoskeletal system

Comparison of urinary parameters, biomarkers, and outcome of childhood systemic lupus erythematosus early onset-lupus nephritis

Daniele Faria Miguel, Maria Teresa Terreri, Rosa Maria Rodrigues Pereira et al. · 2020 · Advances in Rheumatology

Abstract Background Urinary parameters, anti-dsDNA antibodies and complement tests were explored in patients with childhood-Systemic Lupus Erythematosus (cSLE) early-onset lupus nephritis (ELN) from a large multicenter cohort study. Methods Clinical and laboratory features of cSLE cases with kidney involvement at presentation, were reviewed. Disease activity parameters including SLEDAI-2 K scores and major organ involvement at onset and follow up, with accrued damage scored by SLICC-DI, during last follow up, were compared with those without kidney involvement. Autoantibodies, renal function a

View details →
Negative / Null Result ReportOpen accessDentistry

Comparative evaluation of platelet rich plasma in socket healing and bone regeneration after surgical removal of impacted mandibular third molars

Ravi Bhujbal, Neelima A Malik, Nilesh Kumar et al. · 2018 · Journal of Dental Research, Dental Clinics, Dental Prospects

Background. Surgical removal of mandibular third molars results in pain, swelling and bony defects, causing prolonged postoperative recovery. The growth factors present in platelet-rich plasma (PRP) can accelerate the healing, thereby shortening postoperative recovery period. This study was undertaken to evaluate the role of PRP in postoperative socket healing, pain, swelling and bone regeneration following surgical removal of impacted mandibular third molars. Methods. The present case‒control study was conducted on 20 patients with identical bilateral mandibular third molar impaction. PRP was

View details →
Negative / Null Result ReportOpen accessNutrition. Foods and food supply

Endothelial Progenitor Cell Levels and Extent of Post-prandial Lipemic Response

Buket Akcan, Asim Örem, Yahya Altinkaynak et al. · 2022 · Frontiers in Nutrition

Background and ObjectiveDue to the frequency of meal ingestion, individuals spend the majority of the day, ~18 h, in a status of post-prandial (PP) stress. Remnant-like lipoprotein particles (RLPs) are predominant in PP phase playing an important role in the development of atherosclerosis. Endothelial progenitor cells (EPCs) have been suggested to play a role in vessel wall homeostasis and in reducing atherosclerosis. However, there is no information about peripheral blood EPCs number following PP stress. We investigated the association between circulating EPCs levels and extent of PP lipemia

View details →
Negative / Null Result ReportOpen accessVeterinary medicine

Comparison of the feline Glasgow Composite Measured Pain Scale in a feline population without painful disease at home and in a veterinary hospital: a prospective clinical study

Virginia Rega, Stefanie Brause, Sabine BR Kästner et al. · 2025 · Journal of Feline Medicine and Surgery

Objectives The objective of this study was to compare the use of the feline Glasgow Composite Measured Pain Scale (CMPS-f) at home and in a veterinary hospital. The hypothesis was that pain-free cats would score higher in the CMPS-f when in a stressful situation than when calm and relaxed; that is, healthy but stressed cats could appear to be in discomfort or pain. Methods Healthy, non-painful adult cats owned by clinical staff were included in a prospective clinical trial with two observers (caregiver [CG] and researcher). Cats were scored by their CG at home (H), after arrival at the clinic

View details →
Negative / Null Result ReportOpen accessComputer applications to medicine. Medical informatics

Adherence to Blended or Face-to-Face Smoking Cessation Treatment and Predictors of Adherence: Randomized Controlled Trial

Siemer, Lutz, Brusse-Keizer, Marjolein G J, Postel, Marloes G et al. · 2020 · Journal of Medical Internet Research

BackgroundBlended face-to-face and web-based treatment is a promising way to deliver smoking cessation treatment. Since adherence has been shown to be an indicator of treatment acceptability and a determinant for effectiveness, we explored and compared adherence and predictors of adherence to blended and face-to-face alone smoking cessation treatments with similar content and intensity. ObjectiveThe objectives of this study were (1) to compare adherence to a blended smoking cessation treatment with adherence to a face-to-face treatment; (2) to compare adherence within the blended treatment to

View details →
Negative / Null Result ReportOpen accessSurgery

Fine versus Sclerotic Trabecular Bone Remodeling/Restructure: A Refined Radiographic Predictor for Long-Term Segment Stability After Posterior Lumbar Interbody Fusion

Yasuhiro Nagatani MD, Naoki Segi MD, Sadayuki Ito MD et al. · 2026 · Global Spine Journal

Study Design Retrospective cohort study. Objectives Successful bone fusion is crucial for favorable posterior lumbar interbody fusion (PLIF) outcomes. While trabecular bone remodeling (TBR) indicates osseointegration, its interpretation remains uncertain. This study aimed to clarify the clinical significance of distinct TBR types—fine TBR (fTBR) and sclerotic TBR (sTBR)—as seen on computed tomography (CT) scans and to evaluate their predictive value for segment stabilization and complete bone fusion and their relationship with interbody cage materials. Methods Seventy-one patients who underwen

View details →
Negative / Null Result ReportOpen accessMedicine

Preventing Traumatic Urinary Catheter Insertion Through a Computerized Ordering System: Quasi-experimental Study From a Tertiary Academic Center

Ted Lee, Heiko Yang, David Haneuer et al. · 2018 · Hospital Practices and Research

Background: Iatrogenic urethral injury is a well-known risk of urinary catheter insertion. Associated morbidities include stricture formation, catheter associated infection, risk for instrumentation, and extended length of stay. Yet, insufficient attention is paid to its prevention. Objective: This study aimed to assess the effectiveness of a computerized ordering system in reducing iatrogenic urethral injuries in men at high risk for iatrogenic urethral injury from traumatic catheterization. Methods: A pre-post study was performed to assess the impact of a computerized ordering system that re

View details →
Negative / Null Result ReportOpen accessPsychiatry

A comparative study of behavioral and psychological symptoms in patients with vascular and Alzheimer dementia

S. Javed, R. K. Gaur, A. Ibrahim et al. · 2017 · Sri Lanka Journal of Psychiatry

Background Dementia is a common, disabling disorder of the elderly. With the steady growth in the older population, the rate of dementia is expected to increase two fold by 2030 and three fold by 2050. Dementia of Alzheimer Type (DAT) and vascular dementia (VD) are among the most common types of dementia. Behavioral and psychological symptoms of dementia (BPSD) are associated with increased patient morbidity and carer burden. Aims The objective of this study was to compare symptoms of BPSD in patients with DAT and VD and to explore the correlates of BPSD in patients with DAT and VD. Methods Pe

View details →
Negative / Null Result ReportOpen accessNeoplasms. Tumors. Oncology. Including cancer and carcinogens

The Value of Perioperative Chemotherapy for Patients With Hepatoid Adenocarcinoma of the Stomach Undergoing Radical Gastrectomy

Kai Zhou, Anqiang Wang, Jingtao Wei et al. · 2022 · Frontiers in Oncology

BackgroundHepatoid adenocarcinoma of the stomach (HAS) is a rare type of gastric cancer, but the role of perioperative chemotherapy is still poorly understood. The aim of this retrospective study was to investigate the associations between perioperative chemotherapy and prognosis of HAS.MethodWe retrospectively analyzed patients with locally advanced HAS who received radical surgery in Peking University Cancer Hospital between November 2009 and October 2020. Patients were divided into neoadjuvant chemotherapy-first (NAC-first) group and surgery-first group. The relationships between perioperat

View details →
Negative / Null Result ReportOpen accessDentistry

Chitosan’s effects on the acidity, copper ion release, deflection, and surface roughness of copper-nickel-titanium archwire

Ika Devi, Erliera Sufarnap, Finna et al. · 2023 · Dental Journal

Background: Chitosan has an antimicrobial effect in oral hygiene control. Orthodontists sometimes prescribe mouthwash to adolescent patients. Copper-nickel-titanium (CuNiTi) orthodontic archwire is widely used in orthodontic treatment. Chitosan’s effects on the CuNiTi properties of orthodontic archwire are not generally known. Purpose: This study aimed to measure the acidity, copper ion release, deflection, and surface roughness of CuNiTi orthodontic archwire immersed in artificial saliva and 2% chitosan. Methods: This study comprised experimental laboratory research. Forty-two CuNiTi orthodon

View details →
Negative / Null Result ReportOpen accessMedicine

Report: The effects of topical pleurotus tuberregium (PT) aqueous extract on intraocular pressure in monkeys.

Ghalib A Akinlabi, Paul L Kaufman, Julie A Kiland · 2021 · PLoS ONE

Purpose In earlier experiments in Nigeria, aqueous extract of Pleurotus tuber-regium (PT) had been shown to lower intra ocular pressure (IOP) in a feline model. The aim of the current study was to determine whether PT had the same or a similar IOP-lowering effect in ocularly normal non-human primates. Methods Four monkeys were treated twice daily for 4 days with 2 x 20 μl drops of 50 mg/ml PT (pH = 4.3). The monkeys were sedated with 5-10 mg/kg ketamine HCl IM. PT was administered to the right eye and BSS to the left eye. Baseline IOP was measured just prior to beginning treatment, and on day

View details →
Negative / Null Result ReportOpen accessTherapeutics. Pharmacology

Safety of using the intravenous beta-1-adrenoblocker esmolol in patients with ST-segment elevation myocardial infarction before primary percutaneous coronary intervention

O. A. Saygina, T. S. Sukhinina, M. A. Terenicheva et al. · 2026 · Рациональная фармакотерапия в кардиологии

Aim. To study the safety of using the intravenous beta-blocker (BB) esmolol in the early stages of ST-segment elevation myocardial infarction (STEMI) before primary percutaneous coronary intervention (PCI) based on an analysis of the incidence and clinical significance of adverse events (acute heart failure, hypotension, bradycardia, disorders of atrioventricular conduction (AV conduction), etc.) compared with the control group.Material and methods. The presented study is part of the randomized controlled trial ESMO-VASCMI (ClinicalTrials.gov NCT number 06376630) on the study of the cardioprot

View details →
Negative / Null Result ReportOpen accessMedicine

Association between phthalate exposure and accelerated bone maturation in Chinese girls with early puberty onset: a propensity score-matched case–control analysis

Shurong Huang, Zhe Su, Huiping Su et al. · 2022 · Scientific Reports

Abstract Estrogen can promote the acceleration of bone maturation and phthalate esters (PAEs) have estrogen-mimicking effects. We investigated whether PAEs are associated with the acceleration of bone age (BA) in girls with early onset of puberty (EOP). This case–control study enrolled 254 girls with EOP from the Endocrinology Department at Shenzhen Children’s Hospital between December 2018 and August 2019. Ultra-performance liquid chromatography and tandem mass spectrometry were used to analyze the 10 metabolites of PAEs (mPAEs) in urine samples. BA was measured using an artificial intelligen

View details →
Negative / Null Result ReportOpen accessDiseases of the blood and blood-forming organs

Outcomes of autologous transplantation for multiple myeloma according to different induction regimens

Edvan de Queiroz Crusoe, Fabiana Higashi, Maria Paula Nalesso Camargo Padilha et al. · 2014 · Revista Brasileira de Hematologia e Hemoterapia

Background: Induction therapy followed by high-dose chemotherapy and autologous transplantation is the standard treatment for suitable patients with multiple myeloma. Objective: The aim of this study was to assess whether induction therapy with thalidomidecontaining regimens was associated with improved results compared to vincristine, doxorubicin, and dexamethasone, and whether cyclophosphamide, thalidomide, and dexamethasone were associated with better results than thalidomide and dexamethasone. Methods: The records of 152 patients who underwent autologous transplantation at this institution

View details →