keyword
https://read.qxmd.com/read/38652924/effect-of-different-surface-roughening-treatment-on-polyether-ether-ketone-and-acrylic-resin-bonding-a-pilot-study
#1
JOURNAL ARTICLE
Alper Ozdogan, Büsra Tosun
BACKGROUND: As polyether ether ketone (PEEK) is a relatively new material in dentistry, its bonding properties with regard to dental acrylic base materials are not fully known. To ensure the long-term success of removable dentures with a PEEK framework, the base materials must be well bonded to each other. OBJECTIVES: The study aimed to investigate the effects of different kinds of surface roughening treatment on PEEK and acrylic resin bonding. MATERIAL AND METHODS: Eighty PEEK specimens (N = 80) were randomly divided into 5 groups (n = 16 per group) and subjected to various surface roughening treatment (control, grinding, sandblasting, tribochemical silica coating (CoJet), and sulfuric acid etching)...
2024: Dental and Medical Problems
https://read.qxmd.com/read/38652723/correlation-between-maternal-and-umbilical-cord-25-hydroxy-vitamin-d-levels-over-a-range-of-values-a-prospective-observational-study-from-the-united-arab-emirates
#2
JOURNAL ARTICLE
Magnus Jutell, Shakura Bhat, Maria Lindstrom Bagge, Per-Erik Isberg, Nana Wiberg
Worldwide vitamin D insufficiency is remarkably prevalent in both children and adults, including pregnant women. The total amount of the vitamin is best measured by 25-hydroxy-vitamin D (25(OH)D), which is a measurement of total serum cholecalciferol 25(OH)D3 and ergocalciferol 25(OH)D2. There is a known correlation between maternal and umbilical cord blood (UCB) 25(OH)D; however, whether specific maternal demographics or comorbidities influence the correlation remains uncertain. This prospective observational study was designed to study if maternal 25(OH)D levels, maternal age and BMI, amount of supplementation, mode of delivery, diabetes, hypertension/preeclampsia, or sunlight exposure had an impact on the correlation...
2024: PloS One
https://read.qxmd.com/read/38652684/expression-of-syo_1-56-sarp-regulator-unveils-potent-elasnin-derivatives-with-antibacterial-activity
#3
JOURNAL ARTICLE
Islam A Abdelhakim, Yushi Futamura, Yukihiro Asami, Hideaki Hanaki, Naoko Kito, Sachiko Masuda, Arisa Shibata, Atsuya Muranaka, Hiroyuki Koshino, Ken Shirasu, Hiroyuki Osada, Jun Ishikawa, Shunji Takahashi
Actinomycetes are prolific producers of natural products, particularly antibiotics. However, a significant proportion of its biosynthetic gene clusters (BGCs) remain silent under typical laboratory conditions. This limits the effectiveness of conventional isolation methods for the discovery of novel natural products. Genetic interventions targeting the activation of silent gene clusters are necessary to address this challenge. Streptomyces antibiotic regulatory proteins (SARPs) act as cluster-specific activators and can be used to target silent BGCs for the discovery of new antibiotics...
April 23, 2024: Journal of Natural Products
https://read.qxmd.com/read/38652638/correlation-between-risk-factors-of-cognitive-dysfunction-and-blood-pressure-variability-after-acute-ischemic-stroke-in-northwest-shanghai
#4
JOURNAL ARTICLE
Meng Sun, Zhibin Chen, Guoyi Li, Yingfeng Weng, Yangbo Hou
Abstract: Objective: To explore the relationship between risk factors of cognitive dysfunction and blood pressure variability after acute ischemic stroke in northwest Shanghai to establish a model for early identification of high-risk groups of cognitive dysfunction and formulation of more targeted prevention and treatment measures. Methods: Spearman test was used to evaluate the correlation between blood pressure variability and Montreal Cognitive Assessment (MoCA) score in patients with acute ischemic stroke and the partial regression coefficient model was constructed based on the above independent risk factors, and the receiver operating characteristic (ROC) curve was described to analyze the relevant independent risk factors...
April 23, 2024: International Journal of Neuroscience
https://read.qxmd.com/read/38652627/robust-federated-learning-maximum-correntropy-aggregation-against-byzantine-attacks
#5
JOURNAL ARTICLE
Zhirong Luan, Wenrui Li, Meiqin Liu, Badong Chen
As an emerging decentralized machine learning technique, federated learning organizes collaborative training and preserves the privacy and security of participants. However, untrustworthy devices, typically Byzantine attackers, pose a significant challenge to federated learning since they can upload malicious parameters to corrupt the global model. To defend against such attacks, we propose a novel robust aggregation method-maximum correntropy aggregation (MCA), which applies the maximum correntropy criterion (MCC) to derive a central value from parameters...
April 23, 2024: IEEE Transactions on Neural Networks and Learning Systems
https://read.qxmd.com/read/38652622/toward-efficient-convolutional-neural-networks-with-structured-ternary-patterns
#6
JOURNAL ARTICLE
Christos Kyrkou
High-efficiency deep learning (DL) models are necessary not only to facilitate their use in devices with limited resources but also to improve resources required for training. Convolutional neural networks (ConvNets) typically exert severe demands on local device resources and this conventionally limits their adoption within mobile and embedded platforms. This brief presents work toward utilizing static convolutional filters generated from the space of local binary patterns (LBPs) and Haar features to design efficient ConvNet architectures...
April 23, 2024: IEEE Transactions on Neural Networks and Learning Systems
https://read.qxmd.com/read/38652601/development-of-two-eco-friendly-and-high-throughput-microwell-spectrophotometric-methods-for-analysis-of-an-antibacterial-drug-tulathromycin-in-pharmaceutical-bulk-form
#7
JOURNAL ARTICLE
Ibrahim A Darwish, Nourah Z Alzoman, Mohammed S Alsalhi
BACKGROUND: Tulathromycin (TUL) is a triamilide antibacterial drug which has been approved for use in the European Union and the United States for the treatment and prevention of bovine respiratory diseases. The existing methods for determination of TUL in its pharmaceutical bulk form are very limited and suffer from major drawbacks. OBJECTIVES: The aim of this study was the development of two innovative microwell spectrophotometric methods (MW-SPMs) for determination of TUL in its pharmaceutical bulk form...
April 23, 2024: Journal of AOAC International
https://read.qxmd.com/read/38652565/renal-cell-carcinoma-histologic-subtypes-exhibit-distinct-transcriptional-profiles
#8
JOURNAL ARTICLE
Pedro Barata, Shuchi Gulati, Andrew Elliott, Hans J Hammers, Earle F Burgess, Benjamin A Gartrell, Sourat Darabi, Mehmet A Bilen, Arnab Basu, Daniel M Geynisman, Nancy A Dawson, Matthew R Zibelman, Tian Zhang, Shuanzeng Wei, Charles J Ryan, Elisabeth I Heath, Kelsey A Poorman, Chadi Nabhan, Rana R McKay
Molecular profiling of clear cell RCC (ccRCC) tumors of clinical trial patients has identified distinct transcriptomic signatures with predictive value, yet data in non-clear cell variants (nccRCC) are lacking. We examined the transcriptional profiles of RCC tumors representing key molecular pathways, from a multi-institutional, real-world patient cohort, including ccRCC (n = 508) and centrally-reviewed nccRCC (n = 149) samples. ccRCC had increased angiogenesis signature scores compared to the heterogeneous group of nccRCC tumors (mean z-score 0...
April 23, 2024: Journal of Clinical Investigation
https://read.qxmd.com/read/38652525/preferences-on-governance-models-for-mental-health-data-qualitative-study-with-young-people
#9
JOURNAL ARTICLE
Emma Grace Carey, Faith Oluwasemilore Adeyemi, Lakshmi Neelakantan, Blossom Fernandes, Mina Fazel, Tamsin Ford, Anne-Marie Burn
BACKGROUND: Improving access to mental health data to accelerate research and improve mental health outcomes is a potentially achievable goal given the substantial data that can now be collected from mobile devices. Smartphones can provide a useful mechanism for collecting mental health data from young people, especially as their use is relatively ubiquitous in high-resource settings such as the United Kingdom and they have a high capacity to collect active and passive data. This raises the interesting opportunity to establish a large bank of mental health data from young people that could be accessed by researchers worldwide, but it is important to clarify how to ensure that this is done in an appropriate manner aligned with the values of young people...
April 23, 2024: JMIR Formative Research
https://read.qxmd.com/read/38652418/extraction-spectrophotometry-using-a-lithium-ion-selective-metallacrown-temperature-effect-on-extraction-reaction-and-application-to-determination-of-lithium-in-serum-and-seawater
#10
JOURNAL ARTICLE
Shoichi Katsuta, Kosuke Maeda
A metallacrown-type ionophore, 2,3-pyridinediolate-bridged (3,5-dimethylanisole)ruthenium trinuclear complex, has a high extraction selectivity for Li+ , but the extraction reaction is very slow. To solve this problem, the effect of temperature on the rapidity and equilibrium of the extraction of Li+ and Na+ as picrates from water to toluene with the metallacrown was investigated in this study. While the extraction of Li+ requires 6 h of shaking for equilibration at 25 °C, the distribution ratio becomes nearly constant after 4 h and 2 h of shaking at 37 °C and 50 °C, respectively...
April 23, 2024: Analytical Sciences: the International Journal of the Japan Society for Analytical Chemistry
https://read.qxmd.com/read/38652348/a-mechanistic-simulation-of-induced-dna-damage-in-a-bacterial-cell-by-x-and-gamma-rays-a-parameter-study
#11
JOURNAL ARTICLE
Payman Rafiepour, Sedigheh Sina, Zahra Alizadeh Amoli, Seyed Shahram Shekarforoush, Ebrahim Farajzadeh, Seyed Mohammad Javad Mortazavi
Mechanistic Monte Carlo simulations calculating DNA damage caused by ionizing radiation are highly dependent on the simulation parameters. In the present study, using the Geant4-DNA toolkit, the impact of different parameters on DNA damage induced in a bacterial cell by X- and gamma-ray irradiation was investigated. Three geometry configurations, including the simple (without DNA details), the random (a random multiplication of identical DNA segments), and the fractal (a regular replication of DNA segments using fractal Hilbert curves), were simulated...
April 23, 2024: Physical and engineering sciences in medicine
https://read.qxmd.com/read/38652304/interactions-between-folate-metabolism-related-nutrients-and-polymorphisms-on-colorectal-cancer-risk-a-case-control-study-in-the-basque-country
#12
JOURNAL ARTICLE
Sara Corchero-Palacios, Iker Alegria-Lertxundi, Marian M de Pancorbo, Marta Arroyo-Izaga
Folate-mediated one-carbon metabolism (FOCM) plays an important role in colorectal carcinogenesis. Previous studies have assessed the role of folate-mediated one-carbon metabolism (FOCM)-related gene-diet interaction in the aetiology of colorectal cancer (CRC), however, the results remained inconclusive. Thus, this study aimed to investigate dietary factors and genetic variants related to FOCM, as well as potential nutrient-gene and nutrient-lifestyle interactions, on CRC risk. This observational study included 229 patients diagnosed with CRC and 229 age- and sex-matched subjects as controls from a population-based bowel cancer screening program...
April 23, 2024: European Journal of Nutrition
https://read.qxmd.com/read/38652301/diagnostic-accuracy-of-artificial-intelligence-assisted-clinical-imaging-in-the-detection-of-oral-potentially-malignant-disorders-and-oral-cancer-a-systematic-review-and-meta-analysis
#13
JOURNAL ARTICLE
JingWen Li, Wai Ying Kot, Colman Patrick McGrath, Bik Wan Amy Chan, Joshua Wing Kei Ho, Li Wu Zheng
BACKGROUND: The objective of this study is to examine the application of AI algorithms in detecting OPMD and oral cancerous lesions, and to evaluate the accuracy variations among different imaging tools employed in these diagnostic processes. MATERIALS AND METHODS: A systematic search was conducted in four databases: Embase, Web of Science, PubMed, and Scopus. The inclusion criteria included studies using machine learning algorithms to provide diagnostic information on specific oral lesions, prospective or retrospective design, and inclusion of OPMD...
April 23, 2024: International Journal of Surgery
https://read.qxmd.com/read/38652300/using-the-geriatric-nutritional-risk-index-to-predict-outcomes-in-older-patients-with-remnant-gastric-cancer-after-gastrectomy-a-retrospective-multicenter-study-in-japan
#14
JOURNAL ARTICLE
Tomoyuki Matsunaga, Hiroaki Saito, Tomohiro Osaki, Kenji Fukuda, Yoji Fukumoto, Sadamu Takahashi, Kenjiro Taniguchi, Akemi Iwamoto, Hirohiko Kuroda, Kuniyuki Katano, Shota Shimizu, Yuji Shishido, Kozo Miyatani, Teruhisa Sakamoto, Yoshiyuki Fujiwara
PURPOSE: This study investigated the prognostic value of the geriatric nutritional risk index (GNRI) in patients undergoing curative gastrectomy for remnant gastric cancer (RGC). METHODS: This multicenter retrospective study included 105 patients with RGC of ≥ 65 years of age who underwent curative gastrectomy at 10 institutions in Japan between January 2000 and December 2016. Postoperative complications, overall survival (OS), and disease-specific survival (DSS) were analyzed...
April 23, 2024: Surgery Today
https://read.qxmd.com/read/38652294/plant-diversity-increases-spatial-stability-of-aboveground-productivity-in-alpine-grasslands
#15
JOURNAL ARTICLE
Zeng Cui, Jian Sun, Gao-Lin Wu
Plant diversity can significantly affect the grassland productivity and its stability. However, it remains unclear how plant diversity affects the spatial stability of natural grassland productivity, especially in alpine regions that are sensitive to climate change. We analyzed the interaction between plant (species richness and productivity, etc.) and climatic factors (precipitation, temperature, and moisture index, etc.) of alpine natural grassland on the Qinghai-Tibetan Plateau. In addition, we tested the relationship between plant diversity and spatial stability of grassland productivity...
April 23, 2024: Oecologia
https://read.qxmd.com/read/38652259/electrochemical-formation-of-%C3%AE-ketoamides-from-ketoximes-through-non-beckmann-mechanism-pathway
#16
JOURNAL ARTICLE
Issa Yavari, Sina Shaabanzadeh
α-Ketoamides are highly valued in synthetic chemistry due to their incorporation into diverse natural products and drug molecules. Here, we present an innovative electrochemical approach for constructing α-ketoamides, utilizing a mild and environmentally friendly strategy in a user-friendly undivided cell setup under constant current. The excellent functional-group tolerance, convenient accessibility of reaction instruments and starting materials, and easy scalability collectively enhance the importance of this protocol compared to previous challenging methods...
April 23, 2024: Journal of Organic Chemistry
https://read.qxmd.com/read/38652204/anterior-versus-posterior-component-separation-technique-for-advanced-abdominal-wall-reconstruction-a-proposed-algorithm
#17
JOURNAL ARTICLE
P Dries, B Verstraete, M Allaeys, S Van Hoef, H Eker, F Berrevoet
OBJECTIVE: The precise indications for employing the anterior component separation technique (ACST) and the Transversus Abdominis Release (TAR) in abdominal wall reconstruction (AWR) remain uncertain, despite the undeniable value of both techniques. The aim of this study was to analyze the anterior fascial closure rate, postoperative wound morbidity, and hernia recurrence rate for both procedures according to the algorithm used for complex AWR. METHODS: A retrospective analysis of prospectively collected data was carried out...
April 23, 2024: Hernia: the Journal of Hernias and Abdominal Wall Surgery
https://read.qxmd.com/read/38652196/clinical-utility-of-the-combined-use-of-ca19-9-and-dupan-2-in-pancreatic-adenocarcinoma
#18
JOURNAL ARTICLE
Tatsuaki Sumiyoshi, Kenichiro Uemura, Ryuta Shintakuya, Kenjiro Okada, Kenta Baba, Takumi Harada, Masahiro Serikawa, Yasutaka Ishii, Shinya Nakamura, Koji Arihiro, Yoshiaki Murakami, Shinya Takahashi
PURPOSE: Pancreatic ductal adenocarcinoma (PDAC) patients with normal carbohydrate antigen (CA) 19-9 levels can have early-stage cancer or advanced cancer without elevation of CA19-9 level; estimating their malignant potential is difficult. This study investigated the clinical utility of the combined use of preoperative CA 19-9 and Duke pancreatic monoclonal antigen type 2 (DUPAN-2) levels in patients with PDAC. METHODS: Patients who underwent curative-intent surgery for PDAC between November 2005 and December 2021 were investigated...
April 23, 2024: Annals of Surgical Oncology
https://read.qxmd.com/read/38652163/comparison-of-flow-reduction-efficacy-of-nominal-and-oversized-flow-diverters-using-a%C3%A2-novel-measurement-assisted-in-silico-method
#19
JOURNAL ARTICLE
Benjamin Csippa, Levente Sándor, Gábor Závodszky, István Szikora, György Paál
PURPOSE: The high efficacy of flow diverters (FD) in the case of wide-neck aneurysms is well demonstrated, yet new challenges have arisen because of reported posttreatment failures and the growing number of new generation of devices. Our aim is to present a measurement-supported in silico workflow that automates the virtual deployment and subsequent hemodynamic analysis of FDs. In this work, the objective is to analyze the effects of FD deployment variability of two manufacturers on posttreatment flow reduction...
April 23, 2024: Clinical Neuroradiology
https://read.qxmd.com/read/38652084/fast-spect-ct-planar-bone-imaging-enabled-by-deep-learning-enhancement
#20
JOURNAL ARTICLE
Zhenglin Pan, Na Qi, Qingyuan Meng, Boyang Pan, Tao Feng, Jun Zhao, Nan-Jie Gong
BACKGROUND: The application of deep learning methods in rapid bone scintigraphy is increasingly promising for minimizing the duration of SPECT examinations. Recent works showed several deep learning models based on simulated data for the synthesis of high-count bone scintigraphy images from low-count counterparts. Few studies have been conducted and validated on real clinical pairs due to the misalignment inherent in multiple scan procedures. PURPOSE: To generate high quality whole-body bone images from 2× and 3× fast scans using deep learning based enhancement method...
April 23, 2024: Medical Physics
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