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20,211 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 accessMedicine

Results of the Kigali Imbereheza Project: A 2-Arm Individually Randomized Trial of TI-CBT Enhanced to Address ART Adherence and Mental Health for Rwandan Youth Living With HIV.

Geri R. Donenberg, Jessica Fitts, Charles Ingabire et al. · 2022 · PubMed

BACKGROUND: Adolescents living with HIV have elevated mental distress and suboptimal antiretroviral therapy (ART) adherence. SETTING: Two urban clinics in Kigali, Rwanda. METHODS: A 2-arm individual randomized controlled trial compared…

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Negative / Null Result ReportOpen accessChemistry

Net Analyte Signal-based Quantitative Determination of Fusel Oil in Korean Alcoholic Beverage Using FT-NIR Spectroscopy

Santosh Lohumi, Lalit Mohan Kandpal, Young Wook Seo et al. · 2016 · Journal of Biosystems Engineering

Purpose: Fusel oil is a potent volatile aroma compound found in many alcoholic beverages. At low concentrations, it makes an essential contribution to the flavor and aroma of fermented alcoholic beverages, while at high concentrations, it…

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Negative / Null Result Report

Quantifying Clinically Significant Change

Barton J. Mann, Taco Gosens, Stephen Lyman · 2012 · The American Journal of Sports Medicine

Treatment outcome researchers in orthopaedics frequently report only tests of statistical significance between group means to evaluate the effectiveness of a given intervention. Although important in establishing that mean differences are…

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Negative / Null Result ReportOpen accessMedicine

Machine Learning Did Not Outperform Conventional Competing Risk Modeling to Predict Revision Arthroplasty

Jacobien H. F. Oosterhoff, Anne de Hond, Rinne M Peters et al. · 2024 · Clinical Orthopaedics and Related Research

BACKGROUND: Estimating the risk of revision after arthroplasty could inform patient and surgeon decision-making. However, there is a lack of well-performing prediction models assisting in this task, which may be due to current conventional…

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Negative / Null Result Report

Observational study of the implementation of telephone advice nursing in Sweden: did callers follow recommendations and did the rate of healthcare visits change?

Amanda Sundberg, Anna Carin Wahlberg, Niklas Zethraeus et al. · 2021 · BMJ Open

Objectives Telephone advice nursing is introduced in many countries with one key aim being a reduction of avoidable healthcare visits. The aim of this study was to explore whether callers to a telephone advice nursing service followed the…

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Negative / Null Result ReportOpen accessComputer Science

Noise Reduction in EEG Signals using Convolutional Autoencoding Techniques

Conor Hanrahan · 2019 · ARROW@Dublin Institute of Technology (Dublin Institute of Technology)

The presence of noise in electroencephalography (EEG) signals can significantly reduce the accuracy of the analysis of the signal. This study assesses to what extent stacked autoencoders designed using one-dimensional convolutional neural…

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Negative / Null Result Report

Risk of Climate Change for Hydroelectricity Production in China Is Small but Significant Reductions Cannot Be Precluded for More Than a Third of the Installed Capacity

Wenhua Wan, Petra Döll, Hang Zheng · 2022 · Water Resources Research

Abstract To support the implementation of China's carbon neutrality target, this study assesses the impact of future climate change on hydroelectricity production (HP) in China. We developed a hydropower database for mainland China, which…

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Negative / Null Result ReportOpen accessNeuroscience

Melatonin as a Guardian of Mitochondria: Mechanisms and Therapeutic Potential in Neurodegenerative Diseases

Yanyu Bao, Guoying Miao, Nannan He et al. · 2026 · Biology

Mitochondrial dysfunction is a key early pathological process in neurodegenerative diseases (NDs), leading to oxidative stress, impaired energy metabolism, and neuronal apoptosis prior to the onset of clinical symptoms. Although mitochondria represent important therapeutic targets, effective interventions targeting mitochondrial function remain limited. This review summarizes current evidence regarding the mechanisms by which melatonin protects mitochondria and evaluates its therapeutic relevance, with a primary focus on Alzheimer's disease, Parkinson's disease, and Huntington's disease-the ma

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Negative / Null Result ReportOpen accessMedicine

Neutrophil-initiated nociceptive ingrowth orchestrates inflammation resolution to potentiate bone regeneration

Xuanyu Qi, Guangzheng YANG, Zeqian Xu et al. · 2026 · Bone Research

Abstract Nociceptive pain is a cardinal feature of traumatic and inflammatory bone diseases. However, whether and how nociceptors actively regulate the immune response during bone regeneration remains unclear. Here, we found that neutrophil-triggered nociceptive ingrowth functioned as negative feedback regulation to inflammation during bone healing. A unique Il4ra + Ccl2 high neutrophil subset drove intense postinjury TRPV1 + nociceptive ingrowth, which in return dissipated inflammation by activating the production of pro-resolving mediator lipoxin A4 (LXA4) in osteoblasts. Mechanistically, os

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Negative / Null Result ReportOpen accessSocial Sciences

SΔϕ-65 — Slop as Externalized Restabilization Cost: AI Slop, Human Slop, Authority Pollution, and the Cost of Re-entry (v1.0)

Sofience · 2026 · Zenodo (CERN European Organization for Nuclear Research)

This record provides SΔϕ-65 — Slop as Externalized Restabilization Cost: AI Slop, Human Slop, Authority Pollution, and the Cost of Re-entry (v1.0). SΔϕ-65 defines Slop not by whether it is produced by AI or humans, but by whether low execution or production cost externalizes high verification, rebuttal, correction, interpretation, cleanup, and restabilization cost onto others. The central proposition of this document is: Slop is not defined by the producer. Slop is defined by a cost asymmetry: low execution TCC on the producer side, high restabilization TCC on the receiver, platform, expert, p

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Negative / Null Result ReportOpen accessEngineering

Constructing biomimetic microenvironments for liver regeneration

Yawen Zhu, Wanqi Yang, Zhong‐Xia Wang et al. · 2025 · Journal of Nanobiotechnology

Liver regeneration is a sophisticated biological process influenced by a complex microenvironment that becomes profoundly altered in various pathological conditions. Current therapeutic approaches, including liver transplantation and…

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Negative / Null Result ReportOpen accessEngineering

Ultrasound-Responsive Calcium Copper Phosphate Nanomaterials Induce Tumor Cell Death via the Synergistic Release of Copper and Calcium

Jieling Qin, Zhenqi Jiang · 2026 · International Journal of Molecular Sciences

Metastatic breast cancer remains a significant therapeutic challenge due to its high invasiveness and resistance to conventional treatments. In this study, an ultrasound-responsive copper-calcium phosphate (Ca19Cu2(PO4)14) nanomaterial is developed for synergistic ion-mediated tumor therapy. The Ca19Cu2(PO4)14 nanomaterials exhibit a uniform morphology and crystalline structure, as well as good colloidal stability. Upon ultrasound irradiation, the release of Cu2+ and Ca2+ is spatiotemporally controlled via mechanical and cavitation effects. In vitro studies using highly metastatic 4T1 cells de

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Negative / Null Result ReportOpen accessComputer Science

Generative AI offers more, but students revise less: comparing the effects of teacher and AI feedback on student essay revisions

Mohammadreza Farrokhnia, Saeed Latifi, Pantelis M. Papadopoulos et al. · 2026 · International Journal of Educational Technology in Higher Education

Abstract Providing high-quality feedback on student writing is essential yet increasingly difficult due to rising class sizes and limited instructional capacity. Generative AI (GenAI) offers a promising and scalable alternative, but its effectiveness compared to traditional teacher feedback, particularly across different prompting techniques, remains uncertain. This study employed a quantitative, randomized three-group experimental design with 70 graduate students to compare the effects of teacher feedback and GenAI feedback generated using two prompting techniques: Zero-shot and chain-of-thou

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Negative / Null Result ReportOpen accessEnvironmental Science

Dynamic oxygen vacancy engineering on CuO via refreshable catalytic surface for high-efficient water decontamination

Xinyi Zhang, Liangjie Wang, Jian Wei et al. · 2026 · Nature Communications

Oxygen vacancies (Ov) on metal oxide surfaces exhibit high catalytic activity for activating peroxymonosulfate (PMS) in wastewater decontamination, yet their in-situ regeneration remains a significant challenge. This study successfully…

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Negative / Null Result ReportOpen accessMedicine

Predicting the Intention to Use Generative Artificial Intelligence for Health Information: Comparative Survey Study

Jörg Matthes, Anne Reinhardt, Selma Hodzic et al. · 2026 · Journal of Medical Internet Research

Background: The rise of generative artificial intelligence (AI) tools such as ChatGPT is rapidly transforming how people access information online. In the health context, generative AI is seen as a potentially disruptive information source due to its low entry barriers, conversational style, and ability to tailor content to users' needs. However, little is known about whether and how individuals use generative AI for health purposes, and which groups may benefit or be left behind, raising important questions of digital health equity. Objective: This study aimed to assess the current relevance

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Negative / Null Result ReportOpen accessMedicine

CONCUSS randomised clinical trial of vergence/accommodative therapy for concussion-related symptomatic convergence insufficiency

Tara L. Alvarez, Mitchell Scheiman, Farzin Hajebrahimi et al. · 2025 · British Journal of Sports Medicine

OBJECTIVE: The CONCUSS randomised clinical trial compared the effectiveness of immediate office-based vergence/accommodative therapy with movement (OBVAM) to delayed therapy for the treatment of concussion-related convergence insufficiency…

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Negative / Null Result ReportOpen accessMedicine

Population-scale sequencing resolves determinants of persistent EBV DNA

Sherry S. Y. Nyeo, Erin M. Cumming, Oliver S. Burren et al. · 2026 · Nature

Abstract Epstein–Barr virus (EBV) is an endemic herpesvirus implicated in autoimmunity, cancer and neurological disorders. Although primary infection is often subclinical, persistent EBV infection can drive immune dysregulation and long-term complications. Despite the ubiquity of infection, the determinants of EBV persistence following primary exposure remain poorly understood, although human genetic variation partially contributes to this phenotypic spectrum 1–3 . Here we demonstrate that existing whole genome sequencing (WGS) data of human populations can be used to quantify persistent EBV D

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Negative / Null Result ReportOpen accessMedicine

Climate change and hyponatremia‐related hospital admissions in people with focal epilepsy exposed to carbamazepine or its derivatives

Francesco Fortunato, Francesco D’Amico, Anny Votano et al. · 2025 · Epilepsia

OBJECTIVE: To estimate the proportion of individuals with focal epilepsy treated with at least one among carbamazepine (CBZ), oxcarbazepine (OXC), or eslicarbazepine (ESL), who were hospitalized due to hyponatremia-related symptoms in 2024, and to test the hypothesis that there is an association with climatic variables. METHODS: We undertook a prospective study in which people with focal epilepsy treated with at least one of the target drugs and at least one attendance in 2024 formed the study cohort. Individuals who were admitted or seen as outpatients for hyponatremia in 2024 were considered

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Negative / Null Result ReportOpen accessMedicine

PIP4K2C inhibition reverses autophagic flux impairment induced by SARS-CoV-2

Marwah Karim, Manjari Mishra, Chieh‐Wen Lo et al. · 2025 · Nature Communications

In search for broad-spectrum antivirals, we discover a small molecule inhibitor, RMC-113, that potently suppresses the replication of multiple RNA viruses including SARS-CoV-2 in human lung organoids. We demonstrate selective inhibition of…

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Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology

Antibiotic use and gut microbiome composition links from individual-level prescription data of 14,979 individuals

Gabriel Baldanzi, Anna Larsson, Sergi Sayols-Baixeras et al. · 2026 · Nature Medicine

Disruptions in gut microbiome are implicated in cardiometabolic disorders and other health outcomes. Antibiotics are known gut microbiome disruptors, but their long-term consequences remain underexplored. Here we combined individual-level data from the Swedish Prescribed Drug Register with fecal metagenomes of 14,979 adults to examine the association between oral antibiotic use over 8 years and gut microbiome. In multivariable confounder-adjusted regression models, antibiotic use <1 year before fecal sampling was associated with the greatest reduction in species diversity, but significant asso

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Negative / Null Result ReportOpen accessPsychology

Combating weight-stigmatization in online spaces: the impacts of body neutral, body positive, and weight-stigmatizing TikTok content on body image and mood

Raeanna Kilby, Kristin D. Mickelson · 2025 · Frontiers in Psychiatry

Social media movements centered on body positivity and body neutrality both encourage healthy attitudes toward the physical body; however, these movements are conceptually distinct and may have unique influences on body image. This study examined how brief exposure to different types of body acceptance and weight-stigmatizing content affects body image and mood. Participants consisted of women and gender-diverse individuals (N = 326) who completed an online survey and were randomly assigned to view one of four TikTok video compilations: body neutrality, body positivity, weight-stigmatizing, or

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Negative / Null Result ReportOpen accessMedicine

Prognostic value of liver stiffness measurement vs. biochemical response in primary biliary cholangitis

Yu Jun Wong, Laurent Lam, Pierre‐Antoine Soret et al. · 2025 · Journal of Hepatology

BACKGROUND & AIMS: Both liver stiffness measurement (LSM) and biochemical response have prognostic significance in patients with primary biliary cholangitis (PBC). However, the frequency and clinical relevance of discordant biochemical and LSM changes remain unclear. We aim to determine the performance of the most recent or current LSM (LSMc) in predicting first hepatic decompensation (HD) in the setting of discordant biochemical and LSM responses. METHODS: In this international, multicenter study, we included patients with at least two reliable LSM performed at least 6 months apart. Patients

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Negative / Null Result ReportOpen accessMedicine

Deep feature engineering for accurate sperm morphology classification using CBAM-enhanced ResNet50

Şafak Kılıç · 2025 · PLoS ONE

BACKGROUND AND OBJECTIVE: Male fertility assessment through sperm morphology analysis remains a critical component of reproductive health evaluation, as abnormal sperm morphology is strongly correlated with reduced fertility rates and poor assisted reproductive technology outcomes. Traditional manual analysis performed by embryologists is time-intensive, subjective, and prone to significant inter-observer variability, with studies reporting up to 40% disagreement between expert evaluators. This research presents a novel deep learning framework combining Convolutional Block Attention Module (CB

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Negative / Null Result ReportOpen accessPsychology

Association between glutamate transporter gene polymorphisms and obsessive-compulsive disorder/trait empathy in a Korean population

Hae Won Kim, Jee In Kang, Eunhee Hwang et al. · 2018 · PLoS ONE

Accumulating evidence suggests that the glutamatergic system plays a major role in the pathophysiology of obsessive compulsive disorder (OCD) and empathic processing. Particularly, genetic influence of glutamate transporter gene (SLC1A1) on OCD has been frequently replicated in previous studies, but several studies did not replicate the result. Therefore, we aimed to replicate the associations between the SLC1A1 and OCD in a Korean population. In addition, we investigated the influence of SLC1A1 on trait empathy, impairments in which are characteristic of OCD. Six single-nucleotide polymorphis

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