Negative / Null Result ReportOpen accessComputer Science
Mathieu Melich, Jacques Dupont-Roc, Philippe Jacquier · 2007 · arXiv
The anisotropic effect of a hcp 4He solid matrix on cesium atoms has been proposed as a tool to reveal the parity violating anapole moment of its nucleus. It should also result in splitting the D2 optical excitation line in a way depending on the light polarization. An experimental investigation has been set up using oriented hcp helium crystals in which cesium metal grains are embedded. Atoms are created by laser sputtering from this grains. Optical absorption spectra of the D2 line have been recorded in the temperature range of 1.0 to 1.4 K at liquid/solid coexistence pressure by monitoring
Negative / Null Result ReportOpen accessComputer Science
Morris de Haan, Philipp Hager · 2024 · arXiv
Despite the popularity of the two-tower model for unbiased learning to rank (ULTR) tasks, recent work suggests that it suffers from a major limitation that could lead to its collapse in industry applications: the problem of logging policy confounding. Several potential solutions have even been proposed; however, the evaluation of these methods was mostly conducted using semi-synthetic simulation experiments. This paper bridges the gap between theory and practice by investigating the confounding problem on the largest real-world dataset, Baidu-ULTR. Our main contributions are threefold: 1) we s
Negative / Null Result ReportOpen accessComputer Science
Nils Dycke, Iryna Gurevych · 2025 · arXiv
Large Language Models (LLMs) have great potential to accelerate and support scholarly peer review and are increasingly used as fully automatic review generators (ARGs). However, potential biases and systematic errors may pose significant risks to scientific integrity; understanding the specific capabilities and limitations of state-of-the-art ARGs is essential. We focus on a core reviewing skill that underpins high-quality peer review: detecting faulty research logic. This involves evaluating the internal consistency between a paper's results, interpretations, and claims. We present a fully au
Negative / Null Result ReportOpen accessComputer Science
Bryan Y. Siow · 2025 · arXiv
This paper describes a practical approach of using supervised machine learning (ML) models to assist safety investigators to classify aviation occurrences into either incident or serious incident categories. Our implementation currently deployed as a ML web application is trained on a labelled dataset derived from publicly available aviation investigation reports. A selection of five supervised learning models (Support Vector Machine, Logistic Regression, Random Forest Classifier, XGBoost and K-Nearest Neighbors) were evaluated. This paper showed the best performing ML algorithm was the Random
Negative / Null Result Report
Joonpyo Oh, Dae Kyum Yoo, Si Woo Jeong et al. · 2025 · Animal Bioscience
Objective: The effects of heat-treated soybean meal (SBM) and citric acid (HCSBM) on the growth performance, rumen fermentation, blood metabolites, nutrient digestibility, and nitrogen (N) utilization were evaluated in growing Hanwoo…
View details →DOI: 10.5713/ab.24.0860 Negative / Null Result Report
Kaixun Hu, Yajing Huang, Huisheng Ai et al. · 2015 · Blood
Abstract Acute myeloid leukemia (AML) of older patients is an aggressive malignancy. Despite decitabine is performed some clinic trials in these patients, however there is little data on efficacy and is more controversial on it. Recent…
View details →DOI: 10.1182/blood.v126.23.1318.1318 Negative / Null Result Report
Yousuke Nakai, Hiroyuki Isayama, Kazunaga Ishigaki et al. · 2016 · Journal of Clinical Oncology
293 Background: We previously reported the introduction of S-1 improved overall survival (OS) in advanced pancreatic cancer (PC), but in a pooled analysis of 3 RCTs, a combination of gemcitabine and S-1 (GS) improved OS in locally advanced…
View details →DOI: 10.1200/jco.2016.34.4_suppl.293 Negative / Null Result Report
John G. Skedros, Tanner R. Henrie, Chad S. Mears · 2014 · Case Reports in Orthopedics
Although interposition soft-tissue (biologic) resurfacing of the glenoid with humeral hemiarthroplasty has been considered an option for end-stage glenohumeral arthritis, the results of this procedure are highly unsatisfactory in patients…
View details →DOI: 10.1155/2014/517801 Negative / Null Result Report
Zeeshan M. Akhtar, Emily R. Hunt, Brooks N. Platt et al. · 2021 · The Journal of Hip Surgery
Abstract Doxycycline has been shown to reduce fibroblast activity in the treatment of multiple pathologies, and was utilized as part of the postoperative medication protocol to help prevent adhesions from developing after hip arthroscopy.…
View details →DOI: 10.1055/s-0041-1739456 Negative / Null Result Report
Abdullahi Abubakar, Boniface Denis Umoh · 2023 · Caleb International Journal of Development Studies
Many employees are merely holding on to their current jobs for lack of alternatives. Such staff members are no longer deriving satisfaction from their current jobs. Lack of satisfaction impinges on workers productivity and attitude to work…
View details →DOI: 10.26772/cijds-2023-06-01-06 Negative / Null Result Report
B Gu, J Chetwood, A Pudipeddi et al. · 2026 · Journal of Crohn’s and Colitis
Abstract Background Emerging evidence suggests early initiation of advanced therapies (AT) may improve outcomes, but optimal timing remains unclear. We aimed to assess the impact of AT timing on persistence. Methods We interrogated the…
View details →DOI: 10.1093/ecco-jcc/jjaf231.784 Failed Experiment Report
Omar S. Aljitawi, Jeff Radel, Bruce Kimler et al. · 2011 · Blood
Abstract Abstract 4695 Introduction: UCB is also an attractive stem cell source for transplantation because of the ease of procurement, the absence of donor risks, and reduced risk of transmissible infections. Unfortunately, outcomes of…
View details →DOI: 10.1182/blood.v118.21.4695.4695 Negative / Null Result Report
Taíse Toniazzo, Rafael de Almeida Azevedo, Tamires Nunes Oliveira et al. · 2025 · International Journal of Sport Nutrition and Exercise Metabolism
Sports supplements composed of carbohydrate and protein are widely used by endurance athletes and recreational practitioners, mostly aimed at improving performance. This study investigated the effect of a novel carbohydrate + protein honey…
View details →DOI: 10.1123/ijsnem.2025-0021 Negative / Null Result Report
Ching-Tai Huang, Avijit Dutta, Tse-Ching Chen et al. · 2016 · The Journal of Immunology
Abstract The host immune system responds to influenza virus infection for eradication of the virus but the immune response associated inflammation causes tissue injury and damage to the host as well. Severe influenza with morbidity and…
View details →DOI: 10.4049/jimmunol.196.supp.76.21 Negative / Null Result ReportMedicine
Balcı, Saltık, Aktemur et al. · 2026 · Life (Basel, Switzerland)
The migrating myoelectric complex (MMC) is the electrical basis of fasting small intestinal motility. Although oxytocin (OT) regulates gastrointestinal functions through oxytocin receptors (OTRs), its effect on jejunal MMC activity during…
View details →DOI: 10.3390/life16061029 Negative / Null Result Report
Samar Mahmoud Elbahy, Ola Galal Ali, Sara Soliman Ali et al. · 2024 · Egyptian Pediatric Association Gazette
Abstract Background Among preterm babies, patent ductus arteriosus (PDA) is a prevalent condition, and hemodynamically significant patent ductus arteriosus (hsPDA) constitutes an important problem that impacts their outcome. There has…
View details →DOI: 10.1186/s43054-024-00339-2 Negative / Null Result Report
Josef Yayan · 2026 · Life
Background: Sedative medications are widely used in intensive care units (ICUs) to facilitate patient management; however, their association with clinical outcomes remains incompletely understood. This study aimed to evaluate the…
View details →DOI: 10.3390/life16050833 Negative / Null Result Report
· 2022 · Biomedical Letters
Obesity has become a major health concern in the past few decades. It is quite threatening that it is now a common problem among our adults, especially girls. The possible reason for this alarming increase is might acid-alkaline imbalance…
View details →DOI: 10.47262/bl/8.1.20211119 Negative / Null Result Report
Brona Dinneen, Marcus Kenyon, Finbar O'Shea · 2024 · Rheumatology
Abstract Background/Aims Axial spondyloarthritis is a chronic inflammatory condition primarily impacting the spine and sacroiliac joints. In addition to spinal inflammation and peripheral symptoms, it frequently presents with…
View details →DOI: 10.1093/rheumatology/keae163.009 Negative / Null Result Report
Ying Zhu, Ruibo Miao · 2026 · Medicine
Nicotine metabolite ratio (NMR) is a biomarker for the rate of nicotine metabolism and may be linked to depression, but evidence from large, representative populations is scarce. The role of smoking status as a potential effect modifier of…
View details →DOI: 10.1097/md.0000000000048186 Negative / Null Result Report
Georgi M. Sarov · 2016 · Journal of Biomedical and Clinical Research
Summary It is well known that some psychological features of adolescents are positively associated with alcohol drinking but less attention is paid to the psychological features of their significant others. The aim of the study was to…
View details →DOI: 10.1515/jbcr-2016-0005 Negative / Null Result Report
Fishella Aprista Rahmanti, Willy Sandhika, Lusiani Tjandra · 2025 · Folia Medica Indonesiana
Residual Cancer Burden (RCB) is a validated scoring system that quantifies the amount of tumour remaining after neoadjuvant chemotherapy (NAC) for breast cancer, providing prognostic information beyond binary outcomes, such as pathologic…
View details →DOI: 10.65346/2599-056x.2407 Negative / Null Result Report
David Camacho, Denise Burnette, Maria P Aranda et al. · 2019 · Innovation in Aging
Abstract Loneliness and pain are significant public health problems in later life, yet limited research has examined how these factors interact among racially diverse older adults. Guided by the Biopsychosocial Model of Pain, we used data…
View details →DOI: 10.1093/geroni/igz038.2281 Negative / Null Result Report
Arni Gershman, Rivka Farkash, Amjad Abu-Salman et al. · 2025 · Journal of Clinical Medicine
Background: Atrial fibrillation (AF) is a common tachyarrhythmia associated with increased morbidity. AF frequently occurs alongside mitral regurgitation (MR). Although the impact of MR severity on AF is well proven, its effect on AF…
View details →DOI: 10.3390/jcm14207300 Negative / Null Result Report
M Shvydka, M Lutay, I Golikova · 2026 · European Heart Journal - Cardiovascular Imaging
Abstract Introduction Non-invasive diagnostic methods for coronary artery disease (CAD) are gaining increasing importance due to their accessibility, diagnostic value, safety, and cost-effectiveness. Both global longitudinal strain (GLS)…
View details →DOI: 10.1093/ehjci/jeaf367.070 Negative / Null Result Report
Ameera Al-Humidi, Mohammed Abdulsalam · 2025 · Yemeni Journal for Medical Sciences
Background: Sleep deprivation is total or partial absence of sleep. It is a risk factor for many diseases including disorders of reproductive system. Objective: This study aimed to investigate the correlation between sleep deprivation and…
View details →DOI: 10.20428/yjms.v19i4.2793 Negative / Null Result Report
A. V. Myagkov, A. S. Stoyukhina, E. V. Shibalko et al. · 2025 · The EYE GLAZ
Background. Peripheral retinal degeneration (PRD) is among the key risk factors for rhegmatogenous retinal detachment (RRD), particularly in patients with myopia. Despite the accumulated data, the threshold values of axial length and…
View details →DOI: 10.33791/2222-4408-2025-4-288-296 Negative / Null Result Report
Zicheng Wang, Lei Fang, Fachao Shi et al. · 2025 · Frontiers in Nutrition
Objective Depression is a severe global mental disorder closely associated with dietary habits. This study aimed to evaluate associations between four dietary patterns [assessed by Dietary Inflammatory Index (DII), Healthy Eating…
View details →DOI: 10.3389/fnut.2025.1680741 Negative / Null Result Report
Nabil Rtam · 2023 · Ultrasound
Introduction: The British Thyroid Association Ultrasound-classification is a risk stratification model which grades thyroid nodules in U2–5 based on their sonographic appearance. Existence of variability between the ultrasound operators…
View details →DOI: 10.1177/1742271x231215500 Negative / Null Result Report
Narges Taheri, Mahzad Nasir Shalal, Mahdi Mazloom et al. · 2025 · Andrologia
Objective Chromosomal abnormalities participate in male infertility by affecting a variety of physiological functions including spermatogenesis, hormonal homoeostasis, and semen quality. The long arm of the Y chromosome has an important…
View details →DOI: 10.1155/and/6689096 