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Browse the failure-mode index

135 real negative results, null findings, and replication failures in Engineering. 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

3D deformable registration of longitudinal abdominopelvic CT images using unsupervised deep learning

Maureen van Eijnatten, Leonardo Rundo, Batenburg, Joost et al. · 2021 · Data Archiving and Networked Services (DANS)

Background and Objectives: Deep learning is being increasingly used for deformable image registration and unsupervised approaches, in particular, have shown great potential. However, the registration of abdominopelvic Computed Tomography…

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Negative / Null Result ReportOpen accessEngineering

A National and Regional Greenhouse Gas Breakeven Assessment of EVs across North America

Daniel Rasbash, Kevin Joseph Dillman, Jukka Heinonen et al. · 2023 · Sustainability

Electrification is considered key to decarbonizing the transport sector. While electric vehicles (EVs) lack tailpipe emissions, battery and electricity production can lead to significant emissions. This study analysed whether EVs can effectively mitigate GHG emissions in North America, by calculating two GHG breakeven indicators for EVs and comparing them to internal combustion engine vehicles (ICEVs). EV life cycle emissions were compared to those of ICEVs in Canada, Mexico, and the USA. In addition, this study considered potential national electricity grids evolutions and improvements in bat

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Negative / Null Result ReportEngineering

Individual differences in young children’s visual-spatial abilities

Donna Kotsopoulos, Samantha Makosz, Joanna Zambrzycka et al. · 2019 · Early Child Development and Care

An enduring challenge in visual-spatial research has been to identify the factors contributing to individual differences in ability. This research investigated the overall, verbal, and nonverbal visual-spatial ability of 61 (34 boys)…

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Negative / Null Result ReportOpen accessEngineering

Inflow Process of Pedestrians to a Confined Space

Takahiro Ezaki, Kazumichi Ohtsuka, Mohcine Chraibi et al. · 2026 · Qucosa (Saxon State and University Library Dresden)

To better design safe and comfortable urban spaces, understanding the nature of human crowd movement is important. However, precise interactions among pedestrians are difficult to measure in the presence of their complex decision-making processes and many related factors. While extensive studies on pedestrian flow through bottlenecks and corridors have been conducted, the dominant mode of interaction in these scenarios may not be relevant in different scenarios. Here, we attempt to decipher the factors that affect human reactions to other individuals from a different perspective. We conducted

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Negative / Null Result ReportOpen accessEngineering

Mathematical Modeling of Operational Reliability of Mine Lifting Equipment Based on Censored Data

Denis A. Zadkov, Nikita MARTYUSHEV, Boris V. Malozyomov et al. · 2026 · Mathematics

In this study, a comprehensive mathematical method for modeling the operational reliability of mine hoisting equipment under conditions of incomplete and heavily censored data is developed. The analyzed dataset includes 259 observations collected over a five-year period for six critical components, with the overall level of censoring reaching 62% and exceeding 70% for long life mechanical subsystems. Considering right, left, and interval censoring, the paper proposes a unified statistical procedure that combines empirical estimation of failure rates with parametric identification using Weibull

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Negative / Null Result ReportOpen accessEngineering

Predictors of Hospital Mortality in Patients with Acute Coronary Syndrome Complicated by Cardiogenic Shock

Gábor Szabó, András Ágoston, Gábor Csató et al. · 2021 · Sensors

As demonstrated by earlier studies, pre-hospital triage with trans-telephonic electrocardiogram (TTECG) and direct referral for catheter therapy shows great value in the management of out-of-hospital chest pain emergencies. It does not only improve in-hospital mortality in ST-segment elevation myocardial infarction, but it has also been identified as an independent predictor of higher in-hospital survival rate. Since TTECG-facilitated triage shortens both transport time and percutaneous coronary intervention (PCI)-related procedural time intervals, it was hypothesized that even high-risk patie

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Negative / Null Result ReportOpen accessEngineering

Imaged-guided focused ultrasound in combination with various formulations of doxorubicin for the treatment of diffuse intrinsic pontine glioma

Rianne Haumann, John Bianco, Piotr Waranecki et al. · 2022 · Translational Medicine Communications

Abstract Background Diffuse intrinsic pontine glioma (DIPG) is a notoriously difficult tumor to treat, with an overall survival of DIPG patients being only 11 months. One of the major obstacles for the effective treatment of DIPG is the blood–brain barrier (BBB). In order to circumvent the BBB, drug delivery methods are needed that target the pontine area. One such approach is microbubble-mediated focused ultrasound (FUS)—a non-invasive method that can temporarily and locally open the BBB. Previously, it was shown that FUS is safe with minimal side effects and rapid recovery times in preclinic

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Negative / Null Result ReportOpen accessEngineering

Experimental Investigation of the Bearing-Deformation Behavior of Broken Rocks in Goafs Under Various Influencing Factors

Yue Zhao, Jiang Su, Zhengzhen An et al. · 2026 · Applied Sciences

Coal gangue is one of the most abundant solid wastes generated during coal mining. The use of coal gangue for underground backfilling is widely recognized as an effective approach to reducing waste accumulation and promoting sustainable utilization. To further investigate the bearing and deformation behavior of underground gangue filling materials, combined with the underground occurrence conditions of crushed gangue in goaf, a self-designed loading apparatus for crushed gangue was employed to perform lateral compression experiments on crushed gangue. The compaction deformation, fractal dimens

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Negative / Null Result ReportOpen accessEngineering

Assessment of Worn Textile Antennas’ Exposure on the Physiological Parameters and Well-Being of Adults

Khuzairi Masrakin, Hasliza A. Rahim, Ping Jack Soh et al. · 2019 · IEEE Access

This paper presents the assessment of short-term wireless body area network (WBAN) exposure, which is operated at the industrial, scientific, and medical (ISM) band (2.45 GHz) in the vicinity of the human body. The experiment utilizes two popular textile antenna topologies, a planar monopole and a patch antenna as the radiating sources. The objective of this experiment is to investigate whether the exposure from WBAN may influence the physiological parameters (body temperature, blood pressure, and heart rate) and the well-being of the wearer. Counter-balanced, crossover, and the single-blind m

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Negative / Null Result ReportEngineering

Laboratory and Field Evaluation of Single Layer and Double Layer High Friction Surface Treatments

Shuo Li, Peiliang Cong, Demei Yu et al. · 2019 · Transportation Research Record Journal of the Transportation Research Board

High friction surface treatment (HFST) has been proactively used as a solution to extreme friction demands at locations such as horizontal curves, ramps, bridge decks, and intersections. Considerable efforts have been made to evaluate the…

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Negative / Null Result ReportOpen accessEngineering

Predicting Hourly Residential Energy Consumption using Random Forest and Support Vector Regression : An Analysis of the Impact of Household Clustering on the Performance Accuracy

William Hedén · 2016 · KTH Publication Database DiVA (KTH Royal Institute of Technology)

The recent increase of smart meters in the residential sector has lead to large available datasets. The electricity consumption of individual households can be accessed in close to real time, and allows both the demand and supply side to…

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Negative / Null Result ReportOpen accessEngineering

Hybrid combinations of graphene nanoplatelet, carbon nanotube, and carbon black for tailored mechanical and triboelectric properties in polypropylene fibers

Yue Cheng, Jian Wang, Mingwang Shao et al. · 2025 · Advanced Composites and Hybrid Materials

Hybrid polymer composites with carbon fillers are of great interest for applications requiring specific mechanical, electrical, and thermal properties. However, studies on hybrid polymer composite fiber (HPCF) with multiple carbon fillers…

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Negative / Null Result ReportOpen accessEngineering

Functional evaluation of a real-time EMG controlled prosthetic hand

Amlan Jyoti Kalita, Maibam Pooya Chanu, Nayan M. Kakoty et al. · 2025 · Wearable Technologies

Electromyogram (EMG)-controlled prosthetic hands have advanced significantly during the past two decades. However, most of the currently available prosthetic hands fail to replicate human hand functionality and controllability. To measure the emulation of the human hand by a prosthetic hand, it is important to evaluate the functional characteristics. Moreover, incorporating feedback from end users during clinical testing is crucial for the precise assessment of a prosthetic hand. The work reported in this manuscript unfolds the functional characteristics of an EMG-CoNtrolled PRosthetIC Hand ca

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Negative / Null Result ReportOpen accessEngineering

Are There Any Significant Differences in Terms of Age and Sex in Pedestrian and Cyclist Accidents?

Christoph Leo, Maria C. Rizzi, N M Bos et al. · 2021 · Frontiers in Bioengineering and Biotechnology

This study has analyzed sex-specific differences in pedestrian and cyclist accidents involving passenger cars. The most frequently injured body regions, types of injuries, which show sex-specific differences and the general accident parameters of females and males were compared. Accident data from three different European countries (Austria, Netherlands, Sweden) were analyzed. The current analysis shows that for both, females and males, pedestrian and cyclist injuries are sustained mainly to the body regions head, thorax, upper extremities and lower extremities. The results show that the odds

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Negative / Null Result ReportOpen accessEngineering

Revisiting the strainburst intensity of roadways in coal mines: Theory and case study

Lianpeng Dai, Xin Zhao, Yishan Pan et al. · 2026 · Journal of Rock Mechanics and Geotechnical Engineering

Strainburst is a type of severe dynamic hazard frequently encountered in underground excavation, involving violent rock ejection. It is caused by the release of elastic strain energy stored in the surrounding rocks. Hence, the burst energy…

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Negative / Null Result ReportOpen accessEngineering

Gas Chromatography–Sensor System Aids Diagnosis of Inflammatory Bowel Disease, and Separates Crohn’s from Ulcerative Colitis, in Children

Rachael Slater, Kukatharmini Tharmaratnam, Salma Belnour et al. · 2024 · Sensors

The diagnosis of inflammatory bowel disease (IBD) in children and the need to distinguish between subtypes (Crohn's disease (CD) and ulcerative colitis (UC)) requires lengthy investigative and invasive procedures. Non-invasive, rapid, and cost-effective tests to support these diagnoses are needed. Faecal volatile organic compounds (VOCs) are distinctive in IBD. VOC profiles can be rapidly determined using a gas chromatography-sensor device (OdoReader©). In an inception-cohort of children presenting with suspected IBD, we directly compared the diagnostic fidelity of faecal calprotectin (FCP, a

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Negative / Null Result ReportOpen accessEngineering

Short-Term Wind Power Forecast Based on STL-IAOA-iTransformer Algorithm: A Case Study in Northwest China

Zhaowei Yang, Wenqi Liu, Miwei Li et al. · 2025 · Energy Engineering

Accurate short-term wind power forecast technique plays a crucial role in maintaining the safety and economic efficiency of smart grids. Although numerous studies have employed various methods to forecast wind power, there re... | Find, read and cite all the research you need on Tech Science Press

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Negative / Null Result ReportOpen accessEngineering

Anisotropic spin stripe domains in bilayer La3Ni2O7

Naman Gupta, Rantong Gong, Y. Wu et al. · 2025 · Nature Communications

The discovery of superconductivity in La3Ni2O7 under pressure has motivated the investigation of a parent spin density wave (SDW) state, which could provide the underlying pairing interaction. Here, we employ resonant soft x-ray scattering…

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Negative / Null Result ReportOpen accessEngineering

Nomogram for Predicting In-Hospital Mortality in Patients with Acute ST-Elevation Myocardial Infarction Complicated by Cardiogenic Shock after Primary Percutaneous Coronary Intervention

Yudan Wang, Litian Liu, Xinning Li et al. · 2022 · Journal of Interventional Cardiology

Background: Mortality after percutaneous coronary intervention (PCI) in ST-elevation myocardial infarction (STEMI) patients with cardiogenic shock (CS) remains high. However, the real-world risk factors for mortality in these patients are poorly defined. Objective: The aim of this study is to establish a clinical prognostic nomogram for predicting in-hospital mortality after primary PCI in STEMI patients with CS. Methods: This retrospective, multicenter, observational study included STEMI patients with CS who underwent PCI at 39 hospitals in Hebei Province from January 2018 to December 2019. A

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Negative / Null Result ReportOpen accessEngineering

Significant effect of image contrast enhancement on weld defect detection

Wan Azani Mustafa, Haniza Yazid, Hiam Alquran et al. · 2024 · PLoS ONE

Weld defect inspection is an essential aspect of testing in industries field. From a human viewpoint, a manual inspection can make appropriate justification more difficult and lead to incorrect identification during weld defect detection. Weld defect inspection uses X-radiography testing, which is now mostly outdated. Recently, numerous researchers have utilized X-radiography digital images to inspect the defect. As a result, for error-free inspection, an autonomous weld detection and classification system are required. One of the most difficult issues in the field of image processing, particu

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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 accessEngineering

Iteration of Tumor Organoids in Drug Development: Simplification and Integration

Rui Zhao, Qiushi Feng, Yangyang Xia et al. · 2025 · Pharmaceuticals

The inherent complexity and heterogeneity of tumors pose substantial challenges for the development of effective oncology therapeutics. Organoids, three-dimensional (3D) in vitro models, have become essential tools for predicting therapeutic responses and advancing precision oncology, with established correlations to clinical outcomes in patient-derived models. These systems have transformed preclinical drug screening by bridging the gap between conventional two-dimensional (2D) cultures and in vivo models, preserving tumor histopathology, cellular heterogeneity, and patient-specific molecular

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Negative / Null Result ReportOpen accessEngineering

The relevance of preferential flow in catchment scale simulations: Calibrating a 3D dual‐permeability model using DREAM

Luisa Hopp, Barbara Glaser, Julian Klaus et al. · 2019 · Hydrological Processes

Abstract The occurrence of preferential flow in the subsurface has often been shown in field experiments. However, preferential flow is rarely included in models simulating the hydrological response at the catchment scale. If it is…

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