keyword
https://read.qxmd.com/read/37935722/the-stage-and-sex-specific-transcriptome-of-the-human-parasite-schistosoma-mansoni
#21
JOURNAL ARTICLE
Sarah K Buddenborg, Zhigang Lu, Geetha Sankaranarayan, Stephen R Doyle, Matthew Berriman
The flatworm Schistosoma mansoni is an important but neglected pathogen that causes the disease schistosomiasis in millions of people worldwide. The parasite has a complex life cycle, undergoing sexual reproduction in a mammalian host and asexual replication in a snail host. Understanding the molecular mechanisms that the parasite uses to transition between hosts and develop into dimorphic reproductively competent adults may reveal new strategies for control. We present the first comprehensive transcriptomic analysis of S...
November 7, 2023: Scientific Data
https://read.qxmd.com/read/37934702/electric-field-effects-on-the-internal-charge-reorganization-energies-of-crystalline-organic-semiconductors
#22
JOURNAL ARTICLE
Wenhao Wang, Yonglai He, Lingzhi Tu, Hongguang Liu
The synergistic effects of molecular packing and external electric fields (EEFs, including axial and nonaxial fields) on the internal charge reorganization energies (λ) of typical p-type SMOS have been investigated. Combined quantum and molecular mechanics calculations show that, for all-ring-fused rigid molecules single-molecule approximation and neglect of EEFs are adequate for computing λ, while for nonrigid molecules with inter-ring carbon-carbon (IRCC) linkers, the above simplifications may cause a significant deviation from the actual λ...
November 7, 2023: Journal of Physical Chemistry Letters
https://read.qxmd.com/read/37889858/virtual-reality-planning-in-reconstructive-surgery-for-orbital-prosthetic-rehabilitation-using-immersivetouch-platform-preliminary-report
#23
JOURNAL ARTICLE
Eduardo Arias-Amezquita, Lee Alkureishi, Chad Purnell, Linping Zhao, Olivia Lee, Sydney A Mathis, Pravin K Patel, Mimis Cohen
BACKGROUND/PURPOSE: Virtual reality (VR) is emerging as an effective and intuitive surgical planning and 3D visualization tool. Digital surgical planning is the gold standard for planning the placement of implants in maxillofacial prosthetics, but the field lacks a platform exclusively designed to perform the task. Virtual reality planning (VRP) specific for maxillofacial prosthetics offers the clinician improved control of the presurgical planning and the potential to limit the need to adapt other advanced segmentation software...
October 27, 2023: Journal of Craniofacial Surgery
https://read.qxmd.com/read/37888321/performance-comparison-of-classical-methods-and-neural-networks-for-colour-correction
#24
JOURNAL ARTICLE
Abdullah Kucuk, Graham D Finlayson, Rafal Mantiuk, Maliha Ashraf
Colour correction is the process of converting RAW RGB pixel values of digital cameras to a standard colour space such as CIE XYZ. A range of regression methods including linear, polynomial and root-polynomial least-squares have been deployed. However, in recent years, various neural network (NN) models have also started to appear in the literature as an alternative to classical methods. In the first part of this paper, a leading neural network approach is compared and contrasted with regression methods. We find that, although the neural network model supports improved colour correction compared with simple least-squares regression, it performs less well than the more advanced root-polynomial regression...
October 7, 2023: Journal of Imaging
https://read.qxmd.com/read/37859103/snapshot-hyperspectral-imaging-of-intracellular-lasers
#25
JOURNAL ARTICLE
Soraya Caixeiro, Philip Wijesinghe, Kishan Dholakia, Malte C Gather
Intracellular lasers are emerging as powerful biosensors for multiplexed tracking and precision sensing of cells and their microenvironment. This sensing capacity is enabled by quantifying their narrow-linewidth emission spectra, which is presently challenging to do at high speeds. In this work, we demonstrate rapid snapshot hyperspectral imaging of intracellular lasers. Using integral field mapping with a microlens array and a diffraction grating, we obtain images of the spatial and spectral intensity distribution from a single camera acquisition...
September 25, 2023: Optics Express
https://read.qxmd.com/read/37856556/research-on-the-screening-mechanisms-of-composite-vibrating-screens-based-on-discrete-elements
#26
JOURNAL ARTICLE
Huarui Yang, Xuedong Ma
To strengthen the screening efficiency of traditional vibrating screens, a new type of vibrating screen, namely the composite vibrating screen, has been proposed based on the Lissajous vibration synthesis theory. The working principles of composite vibrating screens have been explained. Numerical simulations of the sieving processes for such composite vibrating screens were carried out using the discrete element method. Compared with traditional linear vibrating screens, the force, stratification mechanisms, and throwing principles of the material on the screen's surface were studied, and the vibrating screens' material transportation and screening efficiency were analyzed...
2023: PloS One
https://read.qxmd.com/read/37847241/exploring-geomasking-methods-for-geoprivacy-a-pilot-study-in-an-environment-with-built-features
#27
JOURNAL ARTICLE
Alok Tiwari, Sohail Ahmad, Emad Qurunflah, Mansour Helmi, Ayad Almaimani, Alaa Alaidroos, Majed Mustafa Hallawani
This study discusses the ethical use of geographical information systems (GIS) data with a focus on geomasking for upholding locational privacy. As part of a pilot study in Jeddah City, Saudi Arabia, we used open-source geomasking methods to ensure geoprivacy while examining built environment features that determine the quality of life among individuals with type-II diabetes. We employed the open-source algorithms Maskmy.XYZ and NRand-k for geomasking 329 data points. The results showed no differences between global and city-level spatial patterns, but significant variations were observed with respect to local patterns...
October 17, 2023: Geospatial Health
https://read.qxmd.com/read/37821890/positional-transfer-accuracy-of-titanium-base-implant-abutment-provided-by-two-different-scan-body-designs-an-invitro-study
#28
JOURNAL ARTICLE
Rania E Ramadan, Mahmoud Khamis Abdel Razek, Faten S Mohamed, Rania A Fahmy, Mervat E Abd-Ellah
BACKGROUND: The variabilities in design and material of scan bodies have a major role in the positional transfer accuracy of implants. The purpose of this invitro study was to compare the 3D transfer accuracy (trueness and precision) of titanium base (TB) abutment position provided by 2 different scan bodies: one-piece scan body (SB) in comparison to two-piece healing abutment and scan peg (HA-SP). METHODS: A maxillary model with a dummy implant in the 2nd premolar (Proactive Tapered Implant; Neoss) was 3D printed and TB (Ti Neolink Mono; Neoss) was tightened on the implant and scanned by using a laboratory scanner (inEos X5; Dentsply Sirona) (reference scan)...
October 11, 2023: BMC Oral Health
https://read.qxmd.com/read/37805360/objective-evaluation-of-changes-in-serum-transmittance-over-time-using-a-portable-color-digitizer
#29
JOURNAL ARTICLE
Shogo Shimbashi, Hideki Hyodoh
Forensic pathologists empirically understand that postmortem changes can decrease serum transparency and change its color. Such changes are potential indicators for estimating postmortem intervals; however, reports on color changes focusing on postmortem changes in serum are scarce. To elucidate the effect of postmortem intervals on serum levels, we quantitatively evaluated and investigated the relationship between serum color and time using venous blood samples obtained from three healthy male volunteers. The serum samples were separated at 0 (1 h), 1, 2, 3, 4, 7, 10, 16, 21, and 28 days of storage...
September 25, 2023: Legal Medicine
https://read.qxmd.com/read/37751792/racial-and-ethnic-differences-in-long-term-adverse-radiotherapy-effects-among-breast-cancer-survivors
#30
JOURNAL ARTICLE
Kevin Diao, Xiudong Lei, Weiguo He, Reshma Jagsi, Sharon H Giordano, Grace L Smith, Abigail Caudle, Yu Shen, Susan K Peterson, Benjamin D Smith
PURPOSE: Breast and skin changes are an underrecognized side effect of radiotherapy for breast cancer, which may have long-term implications for quality of life (QOL). Racial and ethnic disparities in breast cancer outcomes including long-term QOL differences following breast radiotherapy are poorly understood. METHODS AND MATERIALS: We conducted a cross-sectional survey study of patients from the XYZ Cancer Registry diagnosed with stage 0-II breast cancer from 2009-2014 and treated with lumpectomy and radiotherapy; 2,770 patients were sampled and 631 responded (23%)...
September 24, 2023: International Journal of Radiation Oncology, Biology, Physics
https://read.qxmd.com/read/37631723/color-conversion-of-wide-color-gamut-cameras-using-optimal-training-groups
#31
JOURNAL ARTICLE
Yasheng Li, Ningfang Liao, Yumei Li, Hongsong Li, Wenmin Wu
The colorimetric conversion of wide-color-gamut cameras plays an important role in the field of wide-color-gamut displays. However, it is rather difficult for us to establish the conversion models with desired approximation accuracy in the case of wide color gamut. In this paper, we propose using an optimal method to establish the color conversion models that change the RGB space of cameras to the XYZ space of a CIEXYZ system. The method makes use of the Pearson correlation coefficient to evaluate the linear correlation between the RGB values and the XYZ values in a training group so that a training group with optimal linear correlation can be obtained...
August 15, 2023: Sensors
https://read.qxmd.com/read/37631565/triangle-mesh-rasterization-projection-tmrp-an-algorithm-to-project-a-point-cloud-onto-a-consistent-dense-and-accurate-2d-raster-image
#32
JOURNAL ARTICLE
Christina Junger, Benjamin Buch, Gunther Notni
The projection of a point cloud onto a 2D camera image is relevant in the case of various image analysis and enhancement tasks, e.g., (i) in multimodal image processing for data fusion, (ii) in robotic applications and in scene analysis, and (iii) for deep neural networks to generate real datasets with ground truth. The challenges of the current single-shot projection methods, such as simple state-of-the-art projection, conventional, polygon, and deep learning-based upsampling methods or closed source SDK functions of low-cost depth cameras, have been identified...
August 8, 2023: Sensors
https://read.qxmd.com/read/37606893/pyconsolv-a-python-package-for-conformer-generation-of-metal-containing-systems-in-explicit-solvent
#33
JOURNAL ARTICLE
R A Talmazan, M Podewitz
We introduce PyConSolv, a freely available Python package that automates the generation of conformers of metal- and nonmetal-containing complexes in explicit solvent, through classical molecular dynamics simulations. Using a streamlined workflow and interfacing with widely used computational chemistry software, PyConSolv is an all-in-one tool for the generation of conformers in any solvent. Input requirements are minimal; only the geometry of the structure and the desired solvent in xyz (XMOL) format are needed...
August 22, 2023: Journal of Chemical Information and Modeling
https://read.qxmd.com/read/37554152/finite-element-analysis-of-kirschner-wire-fixation-for-lateral-condyle-fracture-in-children-in-the-sagittal-plane
#34
JOURNAL ARTICLE
Huanan Bai, Qingda Lu, Xiaoju Liang, Xiaoming Wang, Yating Yang, Huan Wang, Jiaju Wang, Qiang Jie
OBJECTIVE: This study aims to find the optimal arrangement of the Kirschner wire (K-wire) in the sagittal plane for fixation of a pediatric lateral condylar humeral fracture (Milch type II) by using finite element analysis (FEA). METHODS: A model of lateral condyle fracture in a 6-year-old boy was developed, and an XYZ coordinate system was established based on this model. The YZ plane was defined as the sagittal plane to investigate the impact of the angle formed by the first and second K-wires on stability...
2023: Frontiers in Pediatrics
https://read.qxmd.com/read/37546668/novel-method-to-obtain-contact-angles-of-tumor-biopsies
#35
JOURNAL ARTICLE
Julio Rincon, Michail Kastellorizios
Characterizing the strength of a solid-liquid interface can be done by depositing a single drop of liquid on a planar solid surface and measuring the angle of the formed semicircle, called the contact angle. The contact angle of pure water is indicative of a surface's hydrophobicity and is a useful metric in biomedical applications such as tissue scaffolding and drug/tissue interactions. However, the roughness and inhomogeneity of most biological surfaces make obtaining accurate contact angles of such materials challenging...
August 1, 2023: ACS Omega
https://read.qxmd.com/read/37522048/myocardial-infarction-detection-using-itd-dwt-and-deterministic-learning-based-on-ecg-signals
#36
JOURNAL ARTICLE
Wei Zeng, Chengzhi Yuan
Nowadays, cardiovascular diseases (CVD) is one of the prime causes of human mortality, which has received tremendous and elaborative research interests regarding the prevention issue. Myocardial ischemia is a kind of CVD which will lead to myocardial infarction (MI). The diagnostic criterion of MI is supplemented with clinical judgement and several electrocardiographic (ECG) or vectorcardiographic (VCG) programs. However the visual inspection of ECG or VCG signals by cardiologists is tedious, laborious and subjective...
August 2023: Cognitive Neurodynamics
https://read.qxmd.com/read/37474809/open-3dsim-an-open-source-three-dimensional-structured-illumination-microscopy-reconstruction-platform
#37
JOURNAL ARTICLE
Ruijie Cao, Yaning Li, Xin Chen, Xichuan Ge, Meiqi Li, Meiling Guan, Yiwei Hou, Yunzhe Fu, Xinzhu Xu, Shan Jiang, Baoxiang Gao, Peng Xi
Open-3DSIM is an open-source reconstruction platform for three-dimensional structured illumination microscopy. We demonstrate its superior performance for artifact suppression and high-fidelity reconstruction relative to other algorithms on various specimens and over a range of signal-to-noise levels. Open-3DSIM also offers the capacity to extract dipole orientation, paving a new avenue for interpreting subcellular structures in six dimensions (xyzθλt). The platform is available as MATLAB code, a Fiji plugin and an Exe application to maximize user-friendliness...
July 20, 2023: Nature Methods
https://read.qxmd.com/read/37464687/average-entanglement-entropy-of-midspectrum-eigenstates-of-quantum-chaotic-interacting-hamiltonians
#38
JOURNAL ARTICLE
M Kliczkowski, R Świętek, L Vidmar, M Rigol
To which degree the average entanglement entropy of midspectrum eigenstates of quantum-chaotic interacting Hamiltonians agrees with that of random pure states is a question that has attracted considerable attention in the recent years. While there is substantial evidence that the leading (volume-law) terms are identical, which and how subleading terms differ between them is less clear. Here we carry out state-of-the-art full exact diagonalization calculations of clean spin-1/2 XYZ and XXZ chains with integrability breaking terms to address this question in the absence and presence of U(1) symmetry, respectively...
June 2023: Physical Review. E
https://read.qxmd.com/read/37447089/non-invasive-assessment-classification-and-prediction-of-biophysical-parameters-using-reflectance-hyperspectroscopy
#39
JOURNAL ARTICLE
Renan Falcioni, Glaucio Leboso Alemparte Abrantes Dos Santos, Luis Guilherme Teixeira Crusiol, Werner Camargos Antunes, Marcelo Luiz Chicati, Roney Berti de Oliveira, José A M Demattê, Marcos Rafael Nanni
Hyperspectral technology offers significant potential for non-invasive monitoring and prediction of morphological parameters in plants. In this study, UV-VIS-NIR-SWIR reflectance hyperspectral data were collected from Nicotiana tabacum L. plants using a spectroradiometer. These plants were grown under different light and gibberellic acid (GA3 ) concentrations. Through spectroscopy and multivariate analyses, key growth parameters, such as height, leaf area, energy yield, and biomass, were effectively evaluated based on the interaction of light with leaf structures...
July 2, 2023: Plants (Basel, Switzerland)
https://read.qxmd.com/read/37420871/colorimetric-characterization-of-color-imaging-system-based-on-kernel-partial-least-squares
#40
JOURNAL ARTICLE
Siyu Zhao, Lu Liu, Zibing Feng, Ningfang Liao, Qiang Liu, Xufen Xie
Colorimetric characterization is the basis of color information management in color imaging systems. In this paper, we propose a colorimetric characterization method based on kernel partial least squares (KPLS) for color imaging systems. This method takes the kernel function expansion of the three-channel response values (RGB) in the device-dependent space of the imaging system as input feature vectors, and CIE-1931 XYZ as output vectors. We first establish a KPLS color-characterization model for color imaging systems...
June 19, 2023: Sensors
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