Sort by

Article
Engineering
Electrical and Electronic Engineering

Askari Mehdi,

Yongjun Lim,

Kwang-Jung Oh,

Jae-Hyeung Park

Abstract: We present a novel high-resolution complex field extraction technique utilizing the U-Net-based architecture to effectively overcome the inherent resolution limitations of polarization camera with micro-polarized array. Our method extracts high-resolution complex field information, achieving a resolution comparable to that of the original polarization camera. Enabling the parallel phase-shifting digital holography technique, we extracted high-resolution complex field information from four high-resolution phase-shifted interference patterns predicted by our network directly at the hologram plane. Being independent of numerical propagation in dataset acquisition, our network reconstructs objects at various depths without DC and conjugate noise. By training the network with real-valued interference patterns and using only a single pair of low- and high-resolution input and ground truth interference patterns, we simplify computational complexity and improve efficiency. Our simulations demonstrate the network's robustness to variations in random phase distributions and transverse shifts in the input patterns. Validation results show that images have been successfully reconstructed with improved quality and enhanced spatial resolution.
Article
Environmental and Earth Sciences
Ecology

Chengyao Yang,

Chao Song,

Wenjie Yu,

Jilin Xie,

Hong Tao,

Feipeng Li,

Feng Zhao,

Ping Zhuang

Abstract: Muscle element fingerprint is a comprehensive reflection of the accumulated transformation of elements from different sources in muscles, and has habitat indicator functions such as stability and representativeness. Leiocassis longirostris (Ll), Coilia mystus (Cm) and Collichthys lucidus (Cl) are important fishery species in the Yangtze River Estuary with different ecological habits. In this study, the element fingerprint of three fish species (Ll, Cm, Cl) and two environmental media of water (W) and sediment (S) were analyzed. According to the PERMANOVA, significant differences (p
Article
Medicine and Pharmacology
Neuroscience and Neurology

Camilla Bonaudo MD PhD,

Elisa Castaldi PhD,

Agnese Pedone MD,

Federico Capelli MD,

Shani Enderage Don MD,

Edoardo Pieropan MSc,

Andrea Bianchi MD PhD,

Marika Gobbo PhD,

Giuseppe Maduli PhD,

Francesca Fedi MSc

+12 authors
Abstract: Objective: Navigated Transcranial Magnetic Stimulation (nTMS) has been little used to study Visuo-spatial (VS) circuits so far. Our work studies: I) VS functions in neurosurgical oncological patients by using repetitive nTMS (rnTMS); II) the possible subcortical circuits underneath. III) the correspondence between nTMS and Direct Cortical Stimulation (DCS) during awake procedures. Methods: We designed a monocentric prospective study, adopting a protocol to use rnTMS for preoperative planning, including VS functions for lesions potentially involving the VS network, including neurosurgical awake and asleep procedures. nTMS-based-DTI tractography allowed visualization of subcortical circuits. Statistical analyses on n TMS/DCS points were performed. Clinical results were collected pre- and postoperatively. Results: Finally, 27 patients with primitive intra-axial brain lesions were enrolled between April 2023-March 2024. Specific tests and an experimental integrated VS test (VISA) were used. The clinical evaluation (at 5±7, 30±10, 90±10 days after surgery) documented 33% of patients with ne-glect in the left hemisphere four days after surgery, and during 3-months-follow-up preservation of visuospatial function/clinical recovery [90.62% in MMSE, 98.86% in Bell Test, 80% in Clock test, 98% in OCS test]. The surgical strategy was modulated according to nTMS map. Subcortical bun-dles were traced to identify those most involved in these functions: SFLII>SLFII>SLFI. Comparison of nTMS and DCS points in awake surgery (n=10 patients) documented: Sensitivity (Se)=12%, Specificity (Sp)=91.21%, Positive Predictive Value (PPV)=42%, Negative Predictive Value (NPV)=66%. Accuracy ~63.7%. Conclusions: Based on our preliminary results, nTMS is advantageous to study cognitive func-tions, minimising neurological impairment. Further analyses are needed to validate our data.
Article
Computer Science and Mathematics
Analysis

Benito Gonzalez,

Emilio Negrín

Abstract: IIn this paper we derive a Plancherel theorem specific for a WidderLambert type integral transform by employing the corresponding Plancherel theorem for the classical Mellin transform. These findings lead us to explore a class of functions in connection with Salem’s equivalence to the Riemann hypothesis.
Article
Medicine and Pharmacology
Clinical Medicine

Erika Vieira Maroun,

María Argente Pla,

María José Pedraza Serrano,

Bianca Tabita Muresan,

Agustín Ramos Prol,

Eva Gascó Santana,

Silvia Martín Sanchis,

Ángela Durá De Miguel,

Andrea Micó García,

Anna Cebrián Vázquez

+2 authors
Abstract: Background: Disease-related malnutrition and sarcopenia are prevalent conditions in gastrointestinal cancer patients, whose early diagnosis is essential to establish a nutritional intervention that contributes to preventing adverse outcomes and improving the disease prognosis. Phase angle (PhA), rectus femoris cross-sectional area (RFCSA) and rectus femoris thickness (RF-Y-axis) are considered effort-independent markers of muscle mass, strength and functionality. These markers are influenced by the metabolic changes in cancer patients but have not been fully validated in this population. Objective: This study aimed to evaluate the potential utility of PhA, RFCSA and RF-Y-axis in predicting malnutrition and sarcopenia in patients with esophagogastric cancer (EGC). Methods: This was a cross-sectional study of patients diagnosed with EGC. PhA was obtained using bioelectrical impedance vector analysis (BIVA), along with ASMMI. RFCSA and RF-Y-axis were measured via nutritional ultrasound (NU®). Muscle capacity was assessed using handgrip strength (HGS), and functionality by applying the Short-Physical-Performance-Battery (SPPB). Malnutrition and sarcopenia were determined according to GLIM and EWGSOP2 criteria, respectively. Results: Out of the 35 patients evaluated, 82.8% had malnutrition and 51.4% sarcopenia. RFCSA(r=0.582) and RF-Y-axis(r=0.602) showed significant, moderate correlations with ASMMI, unlike PhA(r=0.439), which displayed a weak correlation with this parameter. However, PhA (OR=0.167,CI 95%:0.047-0.591,p=0.006), RFCSA (OR=0.212, CI 95%:0.074-0.605,p=0.004), and RF-Y-axis (OR=0.002,CI 95%:0.000-0.143,p=0.004) all showed good predicting ability for sarcopenia in the crude models, but only RF-Y-axis was able to explain malnutrition in the regression model (OR=0.002, CI 95%:0.000-0.418,p=0.023). Conclusion: RF-Y-axis emerged as the only independent predictor of both malnutrition and sarcopenia in this study, likely due to its stronger correlation with ASMMI compared to PhA and RFCSA.
Article
Biology and Life Sciences
Aquatic Science

Martha Angélica Gutiérrez-Aguirre,

Adrián Cervantes-Martínez,

Eduardo Suárez-Morales

Abstract: A Species richness is a critical measure in biodiversity studies, providing insights into the diversity and conservation value of ecosystems. This research presents an exhaustive inventory of crustaceans and fish species from the Yucatan Peninsula's epicontinental, underground, and anchialine aquatic systems. Spanning records from 1936 to 2024, the study analyzed over 2,600 entries across 670 aquatic systems, including cenotes, flooded caves lakes, springs, and wetlands. A total of 325 species were recorded, comprising 113 fish and 212 crustacean species. The richness and endemism of these species were assessed through a completeness analysis, utilizing non-parametric models (Chao 2, Jackknife 1, Bootstrap) to estimate potential species richness. Notably, the region exhibits high endemism, especially among crustaceans, with up of 50 species and 2 endemic families unique to the Yucatan Peninsula. The study underscores the importance of the eastern YP for crustaceans and central YP for fish, highlighting areas critical for conservation. These findings emphasize the need for further exploration, as the diversity of aquatic species remains incompletely understood. This comprehensive synthesis aims to inform future conservation strategies, environmental management, and regional planning efforts, particularly highlighting the vulnerability of these unique aquatic systems to environmental degradation.
Article
Biology and Life Sciences
Biochemistry and Molecular Biology

Alfiya Oscarovna Iusupova,

Nikolay Nikolaevich Pakhtusov,

Olga Alexandrovna Slepova,

Natalya Vladimirovna Khabarova,

Elena Vitalievna Privalova,

Irina Vladimirovna Bure,

Marina Vyacheslavovna Nemtsova,

Yuri Nikitich Belenkov

Abstract: Background: The development of different phenotypes of coronary artery (CA) lesions is regu-lated by many various factors such as proinflammatory agents, zinc-dependent endopeptidases, growth factors and circulating microRNAs (miRs). Objective: to evaluate the expression levels of miR-34a, miR-145 and miR-222, tumor necrosis factor α (TNF-α), matrix metalloproteinases (MMP-1, -9, -13, -14) and vascular endothelial growth factor (VEGF) in patients with different phenotypes of coronary artery disease (CAD): ischemia/angina with non- obstructive coronary arteries (INOCA/ANOCA) and obstructive CAD (oCAD) compared with the control group. Method: The cross-sectional observational study included 157 subjects with verified CAD diag-nosis (51 patients with INOCA, 76 patients with oCAD and 30 healthy volunteers). The expression of miR-34a, miR-145, miR-222 (RT-PCR) and the levels of VEGF, TNF-α, MMP-1, MMP-9, MMP-13, MMP-14 (ELISA) were estimated in the plasma samples. Results: Higher concentration of MMP-9 was found in oCAD group samples compared to the INOCA/ANOCA group. The INOCA/ANOCA group was characterized by higher levels of TNF-α. Based on multivariate regression analysis, a mathematical model predicting the type of CA lesion was constructed. MiR-145 was the inde-pendent predictor of INOCA/ANOCA (p=0.006). Conclusions: Changes in concentrations of MMP-9 and MMP-14 were found in both investigated CAD groups, with MMP-9 levels were sig-nificantly higher in obstructive CAD samples than in INOCA/ANOCA, which confirms the role of inflammation in the development of atherosclerosis. The multivariate regression analysis allowed us to obtain a model that can predict the phenotype of stable CAD and MiR-145 can be assumed as independent predictor of the INOCA/ANOCA.
Article
Social Sciences
Demography

Ivan N. Alov,

Marko D. Petrović

Abstract: This article analyzes the settlement of Haitians and Jamaicans at the state, county, and census tract levels in the two main population centers for these two groups: New York and Miami metropolitan areas. The authors pose the question of whether Haitians and Jamaicans fundamentally differ from African Americans in terms of settlement and socio-economic status. It is established that these two population groups are highly concentrated on a nationwide scale (in the states of Florida and New York) and in some counties (comprising metropolitan areas of New York and Miami). The authors carried out a spatial correlation analysis to identify areas of concentration of Haitians and Jamaicans in the two above-mentioned metropolitan areas. Three distinct Haitian areas, three mixed Haitian/Jamaican, and one distinct Jamaican area are found in New York. In the Miami metropolitan area, three Haitian/Jamaican areas are identified, as well as one Haitian area. The calculation of the Darden–Kamel Composite Socio-Economic Index was used to assess the socio-economic status of these areas and draw a comparison with the concentration of African Americans in these areas. The analysis revealed that the areas of concentration of Haitians and Jamaicans are relatively disadvantaged in their socio-economic status, but to a lesser extent than those of African Americans. The study also established the following pattern: in the New York metropolitan area, the higher socio-economic status is in the mixed Haitian/Jamaican areas of concentration in the central city, while in Miami, it is observed in the Jamaican areas in the suburbs.
Review
Medicine and Pharmacology
Other

Edith Filaire,

Anais Georgeault,

Christophe Riedel,

Christian Poinsot

Abstract: Pulsed light (PL) is a non-thermal technology which leads to different applications (food, pharmaceutical and cosmetic packaging, medical devices) by inactivating microorganisms, knowing that the properties of PL technology are cumulative treatment, especially for bacteria. PL uses intense flashes of white light (200 nm–1100 nm wavelengths), rich in UV (200 nm–400 nm) and produced by xenon flash lamps. Localized photothermal and photophysical effects, but also the capability of its UV light component to modify the structure of biomolecules (photochemical effect), such as DNA and proteins, are the main mechanisms involved to explain the inactivation of microorganisms by PL. As compared to other sterilization methods, such as heat or chemical disinfectant treatment, PL treatment has several advantages; it is faster, induces low operational cost and leaves no residues. Nevertheless, no exhaustive data on exposure conditions are available, which would make it possible to repeat, interpret and evaluate the data needed for large-scale industrial deployment of PL in pharmaceutical and cosmetic packaging and medical devices. Research should also focus on understanding the inactivation mechanisms of different bacterial strains, states, and morphologies when exposed to PL.
Article
Biology and Life Sciences
Plant Sciences

Mohamed Refaiy,

Muhammad Tahir,

Lijun Jiao,

Xiuli Zhang,

Huicheng Zhang,

Yuhan Chen,

Yaru Xu,

Shuang Song,

Xiaoming Pang

Abstract: The Xyloglucan endotransglucosylase/hydrolase (XTH) family, a group of cell wall-modifying enzymes, plays crucial roles in plant growth, development, and stress adaptation. The quality and yield of Chinese jujube (Ziziphus jujuba) fruit are significantly impacted by environmental stresses, including excessive salinity, drought, freezing, and disease. However, there has no report of the XTH encoding genes present in Chinese jujube genome and their response transcription level under various stresses. This study provides an in-depth analysis of ZjXTH genes in genome of Chinese jujube and elucidating their structural motifs, regulatory networks, and expression patterns under various stresses. A total of 29 ZjXTH genes were identified from Ziziphus jujuba genome. Phylogenetic analysis classifies ZjXTH genes into four distinct groups, while conserved motifs and domain analyses reveal coordinated xyloglucan modifications, highlighting key shared motifs and domains. Interaction network predictions suggest that ZjXTHs may interact with proteins such as Expansin-B1 (EXPB1) and Pectin Methylesterase 22 (PME22). Additionally, cis-regulatory element analysis enhances our understanding of Chinese jujube plant's defensive systems, where TCA- and TGACG-motifs process environmental cues and orchestrate stress responses. Expression profiling revealed differential regulation of ZjXTH genes under various stress conditions. Under salt stress, ZjXTH1 was upregulated, while ZjXTH6, and ZjXTH13 were downregulated, with ZjXTH3 and ZjXTH19 exhibiting negative regulation. In response to drought, ZjXTH5 showed upregulation, whereas ZjXTH7, -25, -13 were downregulated, and ZjXTH13 and ZjXTH19 were negatively regulated. Furthermore, under cold conditions, ZjXTH14 and ZjXTH18 were upregulated, while ZjXTH22, -23, -28, -29 were downregulated, and ZjXTH20 exhibited negative regulation. Additionally, phytoplasma infection induced the upregulation of ZjXTH1, -3, -5, with ZjXTH6, -7, -11, -16, -25 being downregulated, and ZjXTH20 showing negative regulation. Collectively, these findings deepen our understanding of the functional roles of Chinese jujube XTHs, emphasizing their regulatory function in adaptive responses in Chinese jujube plants.

of 7,530

Prerpints.org logo

Preprints.org is a free preprint server supported by MDPI in Basel, Switzerland.

Subscribe

© 2024 MDPI (Basel, Switzerland) unless otherwise stated