Negative / Null Result ReportOpen accessEnergy
Shufang Yang, Xue Lu, Jia Wang et al. · 2025 · Marine Drugs
Astaxanthin, a high-value keto-carotenoid with potent antioxidant and health-promoting properties, has gained global attention as a sustainable nutraceutical and biotechnological product. The green microalgae Haematococcus pluvialis and Chromochloris zofingiensis represent two promising natural producers, yet they differ markedly in physiology, productivity, and industrial scalability. This review provides a focused comparative analysis of these two species, emphasizing their quantitative performance differences. H. pluvialis can accumulate astaxanthin up to ~3–5% of dry biomass but typically
View details →Negative / Null Result ReportOpen accessMedicine
Ewelina Młynarska, Wiktoria Lisińska, Katarzyna Hossa et al. · 2025 · Pharmaceuticals
Vitamin D, long recognized for its essential role in calcium-phosphate balance and bone health, has increasingly been identified as a pleiotropic regulator of metabolic, cardiovascular, and renal function. Deficiency of vitamin D is widespread worldwide and has been linked to a higher risk of insulin resistance, type 2 diabetes, atherosclerosis, hypertension, and chronic kidney disease. Meta-analyses suggest that each 10 nmol/L (≈4 ng/mL) increase in serum 25-hydroxyvitamin D [25(OH)D] is associated with about a 4% lower risk of type 2 diabetes, whereas other analyses indicate an approximately
View details →Negative / Null Result ReportOpen accessMedicine
Iñaki Eguren‐Santamaría, Ignacio Melero, Inmaculada Rodríguez et al. · 2025 · Journal for ImmunoTherapy of Cancer
Almost every successful anticancer treatment has been preceded by preclinical scientific breakthroughs that encouraged clinical development. However, therapeutic strategies showing promising preclinical results often fail to confirm…
View details →Negative / Null Result ReportOpen accessMedicine
Bilal A. Siddiqui, Sumit K. Subudhi, Padmanee Sharma · 2022 · Cell Reports Medicine
The addition of atezolizumab (anti-PD-L1) to enzalutamide (androgen receptor antagonist) did not prolong survival in metastatic prostate cancer.1Powles T. Yuen K.C. Gillessen S. Kadel 3rd, E.E. Rathkopf D. Matsubara N. Drake C.G. Fizazi K.…
View details →Negative / Null Result ReportOpen accessNeuroscience
Madhur Mangalam · 2025 · European Journal of Applied Physiology
The Bayesian brain hypothesis-the idea that neural systems implement or approximate Bayesian inference-has become a dominant framework in cognitive neuroscience over the past two decades. While mathematically elegant and conceptually unifying, this paper argues that the hypothesis occupies an ambiguous territory between useful metaphor and testable, biologically plausible mechanistic explanation. We critically examine the key claims of the Bayesian brain hypothesis, highlighting issues of unfalsifiability, biological implausibility, and inconsistent empirical support. The framework's remarkabl
View details →Negative / Null Result ReportOpen accessMedicine
Robin Murray, Alice Egerton, Yueming Gao et al. · 2025 · Biological Psychiatry
Much is known about the use, benefits, and side-effects, of clozapine in treatment resistant schizophrenia (TRS). However, why clozapine is more effective than other antipsychotics in TRS remains unclear. This paper addresses this question. TRS patients show glutamate abnormalities, and clozapine has widespread effects on glutamate. However, these actions have not been proven different to those of other antipsychotics. Immune dysfunction is also reported in TRS, and clozapine has anti-inflammatory actions, but these have not been correlated with clinical improvement. Currently, there is much i
View details →Negative / Null Result ReportOpen accessMedicine
A. Giordano, Cristina Romero-Mascarell, Begoña González-Suárez et al. · 2025 · Digestive Diseases and Sciences
The integration of artificial intelligence (AI) into capsule endoscopy is transforming gastrointestinal diagnostics by enhancing lesion detection and optimizing reading efficiency. This review focuses on the clinical applications of…
View details →Negative / Null Result ReportOpen accessPsychology
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
View details →Negative / Null Result ReportOpen accessEarth and Planetary Sciences
Alok Bharadwaj, R. de Bruin, Arjen J. Jakobi · 2026 · Nature Communications
Cryogenic sample electron microscopy (cryo-EM) maps often display uneven quality, with high-resolution features coexisting alongside weak or poorly ordered regions. Such variation complicates structural interpretation, especially for heterogeneous macromolecular assemblies. Here, we present LocScale-2.0, a context-aware map optimisation framework that operates without prior knowledge of molecular structure or composition. By leveraging general expectations of electron scattering by biological macromolecules, it enhances local detail and connectivity while preserving weak but biologically relev
View details →Negative / Null Result ReportOpen accessBusiness, Management and Accounting
Faisal AlReshaid, Alper Ertürk, Razan Alkhayyat et al. · 2025 · Frontiers in Psychology
Introduction: Leaders' self-awareness is essential to leadership effectiveness. Cognitive styles-how individuals perceive and process information-are key factors in fostering self-awareness. Drawing on Social Identity Theory (SIT), this study explores whether cognitive style congruence between supervisors and subordinates enhances supervisors' self-awareness, and whether Leader-Member Exchange (LMX) mediates this relationship. Methods: We used a time-lagged dyadic design and multilevel polynomial regression to analyze data from 189 subordinates and 36 supervisors. Cognitive styles were measure
View details →Negative / Null Result ReportOpen accessEarth and Planetary Sciences
Andrea Catacora‐Grundy, Caroline Juery, Fabien Chevalier et al. · 2026 · Proceedings of the National Academy of Sciences
Abstract Symbiosis between a host and intracellular eukaryotic microalgae is a widespread life strategy in aquatic ecosystems. This partnership is considered to be mainly energized by the photosynthetically-derived carbon energy of…
View details →Negative / Null Result ReportOpen accessNeuroscience
James W. Antony · 2026
Abstract Some neural representations change across multiple timescales. Here we argue that modeling this “drift” could help explain the spacing effect (the long-term benefit of distributed learning), whereby differences between stored and current temporal context activity patterns produce greater error-driven learning. We trained a neurobiologically realistic model of the entorhinal cortex and hippocampus to learn paired associates alongside temporal context vectors that drifted between learning episodes and/or before final retention intervals. In line with spacing effects, greater drift led t
View details →Negative / Null Result ReportOpen accessPhysics and Astronomy
C.L. Wilson, J. Astbury, M.J. Ginsberg et al. · 2026 · Nuclear Fusion
Abstract To support the pre-concept design of Tokamak Energy’s (TEs) ST-E1 fusion power plant, we developed a new systems code, PyTok. PyTok codifies plasma physics and engineering constraints within a pure Python, object-oriented framework designed for rapid design iteration and exploration of the power-plant parameter space. The code base and its human- and machine-readable data structures enable coupling to external physics codes and data-analysis tools. Informed by TEs design philosophy and techno-economic analyses, the code was used to identify an initial reference design point for ST-E1.
View details →Negative / Null Result ReportOpen accessEngineering
E. Maartensson, N. Welch, M. Scarpari et al. · 2026 · Nuclear Fusion
Abstract ST-E1 is Tokamak Energy’s commercially competitive fusion power plant design featuring a lifetime high-temperature superconducting (HTS) magnet cage, which has completed its pre-concept design stage. A central challenge at the pre-concept stage is the need to iteratively and consistently integrate the development of the magnet cage, core plasma physics, and power-exhaust systems, while avoiding serial design loops and late discovery of infeasible operating scenarios. Accurate representation of inductive current drive is particularly critical, as it tightly couples magnetic equilibria,
View details →Negative / Null Result ReportOpen accessEnergy
Haisheng Zhang, Jiawei Li, Haijing Yan et al. · 2025 · Advanced Materials
Proton exchange membrane water electrolysis (PEMWE) is a promising blueprint for the industrial production of green hydrogen in the short term, but its large-scale deployment is extremely constrained by the high cost and low storage of…
View details →Negative / Null Result ReportOpen accessMedicine
Gustavo Jimenez‐Maggiora, Arndt‐Peter Schulz, Michael Donohue et al. · 2024 · The Journal of Prevention of Alzheimer s Disease
BACKGROUND: The Anti-Amyloid Treatment in Asymptomatic Alzheimer's Disease (A4) and Longitudinal Evaluation of Amyloid Risk and Neurodegeneration (LEARN) studies were conducted between 2014 and 2023, with enrollment completed in 2017 and final study results reported in 2023. The study screening process involved the collection of initial clinical, cognitive, neuroimaging, and genetic measures to determine eligibility. Once randomized, enrolled participants were assessed every four weeks over a 4.5-year follow-up period during which longitudinal clinical, cognitive, and neuroimaging measures wer
View details →Negative / Null Result ReportOpen accessEngineering
M. A. Huque, Leon M. Tolbert, Benjamin J. Blalock et al. · 2026 · IMAPSource Proceedings
High-temperature power conversion modules (DC-DC converters, inverters, etc.) have enormous potential in extreme environment applications, including automotive, aerospace, geothermal, nuclear, and well logging. Power-to-volume and…
View details →Negative / Null Result ReportOpen accessMedicine
Solveigh C. Koeberle, Maria Thürmer, Fengting Su et al. · 2025 · Theranostics
: Our study deciphers the structural features of silybin contributing to hepatic lipid remodeling and suggests that silymarin/silybin protects the liver in individuals with mild metabolic dysregulation, involving a lipid class switch from triglycerides to phospholipids, whereas it may be less effective in disease states associated with severe metabolic dysregulation.
View details →Negative / Null Result ReportOpen accessPhysics and Astronomy
Junyao Li, Ming-Yang Zhuang, Yue Shen et al. · 2025 · The Astrophysical Journal
Abstract Kiloparsec-scale dual and offset active galactic nuclei (AGNs) are signposts of accreting supermassive black holes (SMBHs) triggered during late-stage galaxy mergers, offering crucial insights into the coevolution of SMBHs and galaxies. However, robustly confirmed systems at high redshift (e.g., z > 1) are scarce and biased toward the most luminous and unobscured systems. In this study, we systematically search for kiloparsec-scale (projected separation <15 kpc) dual and offset AGNs around 571 moderate-luminosity, X-ray-selected AGNs, including the obscured population, utilizing
View details →Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology
Erlei Zhi, Haowei Bai, Chuan Ren et al. · 2025 · Nature Communications
Mitochondrial fatty acid β-oxidation (FAO) is essential for energy production and cellular homeostasis, yet its role in sperm function has remained unclear. Through whole-exome sequencing (WES) of 800 patients with asthenozoospermia, we…
View details →Negative / Null Result ReportOpen accessBusiness, Management and Accounting
Alina Marculetiu, Çiğdem Ataseven, Injazz J. Chen · 2025 · Business Ethics the Environment & Responsibility
ABSTRACT This study investigates the effectiveness of institutional pressures in motivating two contrasting sustainability strategies, symbolic and substantive, and their subsequent impact on the triple bottom line (TBL). Using data from…
View details →Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology
Michael Korenjak, Nuri A. Temiz, Stéphane Keïta et al. · 2026 · Genome Medicine
BACKGROUND: Tobacco use is linked to multiple cancer types and a quarter of cancer deaths. Tobacco smoke contains numerous mutagenic chemicals such as polycyclic aromatic hydrocarbons (PAH), however, the mutagenicity of many chemicals in…
View details →Negative / Null Result ReportOpen accessEconomics, Econometrics and Finance
S Jakubowski, Paweł Kawalec, Przemysław Holko et al. · 2024 · Frontiers in Pharmacology
Objectives: The aim of this study was to characterize the reimbursement policy for orphan drugs (ODs) in Central and Eastern European (CEE) countries in relation to the availability and impact of clinical evidence, health technology assessment (HTA) procedure, selected economic indicators, and the drug type according to indications. Materials and methods: A list of authorized medicines with orphan designation and information about active substance, Anatomical Therapeutic Chemical (ATC) classification, and therapeutic area was extracted from the web-based register of the European Medicines Agen
View details →Negative / Null Result ReportOpen accessPsychology
E. G. J. M. Arts, Bram Orobio de Castro, Ellen Luteijn et al. · 2024 · Social Development
Abstract This study investigated whether interactive virtual reality (VR) training of social and emotional abilities (InterAction) improves socio‐emotional functioning of youth with developmental language disorders (DLD). To this end we conducted a multiple baseline intervention study, comparing participants’ social abilities during a baseline phase with their changes in abilities during the intervention and posttest phase. The training group consisted of 29 adolescents ( 20 boys, 9 girls ) with DLD from the Netherlands. The training consisted of nine, weekly (45–50 min) individual sessions wi
View details →Negative / Null Result ReportOpen accessMedicine
Émilie Le Rhun, Lakshmi Nayak, Mary Jane Lim-Fat et al. · 2024 · Neuro-Oncology
BACKGROUND: There are no validated tools for the clinical neurological assessment of patients with leptomeningeal metastases (LM). However, clinical examination during the course of the disease guides medical management and is part of response assessment in clinical trials. Because neuroimaging may not always be obtained owing to rapid clinical deterioration, clinical neurological assessment of LM is essential, and standardization is important to minimize rater disagreement. METHODS: The Response Assessment in Neuro-oncology-LM group launched a 2-step process, aiming at improving and standardi
View details →Negative / Null Result ReportOpen accessEnvironmental Science
Wolfgang Wüster · 2025 · Vertebrate Zoology
The advent of molecular methods has revolutionised the field of species delimitation and description, one of the key tasks of systematic biology. In animal taxonomy, one marker, the mitochondrial DNA (mtDNA) molecule, has acquired and retained disproportionate influence. This is despite its uniparental, clonal mode of inheritance, as a result of which the entire molecule acts as a single locus, and that precludes its use as a test for admixture between putative lineages, a key consideration in species delimitation. To establish the extent to which the limitations of mtDNA affect present-day ta
View details →Negative / Null Result ReportOpen accessMedicine
Ruben P. A. van Eijk, Daphne N. Weemering, Sarah Opie-Martin et al. · 2025 · Amyotrophic Lateral Sclerosis and Frontotemporal Degeneration
Objective To characterize the natural history of the revised ALS functional rating scale (ALSFRS-R) over a 24-month period following initial assessment, and to assess its associations with survival.Methods Longitudinal ALSFRS-R…
View details →Negative / Null Result ReportOpen accessPsychology
Gerui Xu, Shruthi Venkatesha Murthy, Bochen Jia · 2025 · Informatics
As AI decision support systems play a growing role in high-stakes decision making, ensuring effective integration of human intuition with AI recommendations is essential. Despite advances in AI explainability, challenges persist in fostering appropriate reliance. This review explores AI decision support systems that enhance human intuition through the analysis of 84 studies addressing three questions: (1) What design strategies enable AI systems to support humans’ intuitive capabilities while maintaining decision-making autonomy? (2) How do AI presentation and interaction approaches influence
View details →Negative / Null Result ReportOpen accessMedicine
Golan Carmi · 2025 · Education Sciences
Generative AI technologies are rapidly permeating higher education as innovative tools that support teaching and learning processes. This study investigates the integration of GenAI tools into academic learning and examines their influence on students’ learning effectiveness, attitudes, and satisfaction. A quantitative survey was administered to 485 college students. The findings indicate that students’ attitudes, satisfaction, and accumulated experience with GenAI constitute the most influential factors in promoting effective learning. Perceived advantages and disadvantages also play a substa
View details →Failed Experiment ReportOpen accessMedicine
Sahar Motamedi, Nina Ravoet, Jonas Dehairs et al. · 2025 · Nature Communications
Ferroptosis, a regulated form of cell death driven by lipid peroxidation, holds promise for targeting treatment-resistant cancer cells. Using a panel of melanoma cell lines, we uncover variability in the timing of ferroptosis onset upon…
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