2,644 papers found

Accurate characterization of aerodynamic stability coefficients is essential for predicting the dynamic behavior of atmospheric re-entry vehicles. Estimating these coefficients from free-flight data is challenging due to nonlinear flow–structure coupling, limited data, and high computational costs. Existing nonl…

Sclerosing adenosis is a benign breast disease with non-specific images on ultrasound or mammogram. It can mimic infiltrating carcinoma when the above mentioned imaging techniques are used. Herein we present a patient with breast cancer who received neoadjuvant chemotherapy and subsequently underwent mastectomy. Ductos…

An extension of a coarse-grained, implicit-solvent peptide model wherein each amino acid residue is represented by four interaction sites is presented and discussed. The model is used to study the coil-to-helix transition of five peptide sequences, ranging from all hydrophobic to all hydrophilic, for a 10-residue pepti…

Accurate fault diagnosis of analog circuits is critical for ensuring the reliability of modern electronic systems. Two practical challenges hinder data-driven methods: data imbalance, where certain fault modes are rare, and variable operating conditions, where models trained under one fault severity fail to generalize…

We describe successful use of enteral sildenafil following surgery for congenital heart disease in three cases. One infant after repair of ventricular septal defect and aortic coarctation had pulmonary hypertension non-responsive to nitric oxide, another infant and 3.5 year child following palliative surgery for congen…

Authors present a case of a 78-year-old female patient with invasive ductal adenocarcinoma in the pacemaker, s pocket. A decubitus-like tumor had developed in this place, and has been missinterpretated as a benign lesion for 5 months. Diagnosis was done with a time delay. An excisional biopsy revealed annvasive ductal…

We propose an approach to predicting implicit gene-disease associations based on the inference network, whereby genes and diseases are represented as nodes and are connected via two types of intermediate nodes: gene functions and phenotypes. To estimate the probabilities involved in the model, two learning schemes are…

Trained indexers at the National Library of Medicine (NLM) manually tag each biomedical abstract with the most suitable terms from the Medical Subject Headings (MeSH) terminology to be indexed by their PubMed information system. MeSH has over 26,000 terms and indexers look at each article's full text while assigning th…

Acute anterior ischemic optic neuropathy (AION) is a disabling disease which impairs visual functions. AION is characterized by ischemic injury of the optic nerve caused by hypoperfusion in the short posterior ciliary arteries supplying the optic nerve head. AION is a complex multi-factorial disease and is difficult to…

Follicular dendritic cell sarcoma (FDCS) is a rare tumor, derived from antigen-presenting cells that normally form meshworks in lymphoid follicles. FDCS in general recapitulate the immunophenotypic profile of follicular dendritic cells (FDCs). This tumor affects mainly the lymph nodes, but may arise at a variety of ext…

An unusual case of early nephrotic syndrome without hypertension which slightly resolved after delivery is documented. Renal biopsy was performed postpartum and the diagnosis was focal and segmental glomerulosclerosis with moderate chronic renal changes. It is questioned whether the case was due to preeclampsia or was…

INTRODUCTION: Cases of venous thrombosis associated with celiac disease have been rarely published. We report a case of celiac disease associated with deep venous thrombosis in the left leg. MATERIAL AND METHODS: A 44-year-old man was admitted to the hospital due to diarrhea, which was present for three months. The di…

There is ongoing debate in the profession as to whether veterinary students should focus on one (or a small number of) species during their undergraduate training (ie, track). This paper presents the qualitative data from surveys evaluating UK stakeholder opinion on introducing partial tracking (whereby students contin…

Early diagnosis of expansive formations enables efficient therapy and maximal reduction of remaining neurological damage. Schwannoma situated entirely within the inner auditory canal with free pontocerebellar angle is a rather rare event. Of significant diagnostical help are auditory evoked potentials (AEP), computeris…

The original histological investigation that forms the basis of our present understanding of tooth movement was carried out on dogs by the Swedish dentist Carl Sandstedt at the Karolinska Institute, Stockholm. His findings were published in 1901 as a monograph in Swedish, and shortly after his death in 1904, as three a…

The near-infrared and visible wavelength spectrum of the water dimer is considered to be the major contributor to the so-called water continuum at these wavelengths. However, theoretical models of this spectrum require the simultaneous treatment of both monomer and dimer excitations. A model for treating this problem i…

Because of repeated claims that A-DNA cannot exist without aggregation or condensation, the state of DNA restriction fragments with 84-859 bp has been analyzed in aqueous solutions upon reduction of the water activity. Rotational diffusion times τ (d) measured by electric dichroism at different water activit…

The myocardial performance index (MPI) is a simple quantitative, non-geometric index of ventricular function and is readily applicable for evaluation of the right and left ventricle function. The aim of the study was to assess normal MPI values in healthy children. We studied 38 healthy children from 3 to 18 years of a…

The article brings a biomechanical analysis of the determination of the position of gravity centre of trainee in plane, both graphically and by calculation. The importance of determining the position of the gravity centre in different postures of a trainee should not be underestimated, as it belongs to the basic princi…

We study the phase behaviour of hard spheres confined between two parallel hard plates using extensive computer simulations. We determine the full equilibrium phase diagram for arbitrary densities and plate separations from one to five hard-sphere diameters using free energy calculations. We find a first-order fluid-so…