نتایج جستجو برای: freckles
تعداد نتایج: 196 فیلتر نتایج به سال:
The formation of macroscopic grain defects during the directional solidification of single crystal Ni-base superalloys can have a significant impact on resulting fatigue and creep properties of critical structural components used in a variety of aerospace applications and gas turbines for power generation. Common casting defects in Ni-base superalloys include freckles, Figure 1, which consist o...
We use the two-dimensional discrete cosine transform to study how the noise from the data enters the reconstructed images computed by regularizing iterations, that is, Krylov subspace methods applied to discrete ill-posed problems. The regularization in these methods is obtained via the projection onto the associated Krylov subspace. We focus on CGLS/LSQR, GMRES, and RRGMRES, as well as MINRES ...
A Polymorphism in IRF4 Affects Human Pigmentation through a Tyrosinase-Dependent MITF/TFAP2A Pathway
Sequence polymorphisms linked to human diseases and phenotypes in genome-wide association studies often affect noncoding regions. A SNP within an intron of the gene encoding Interferon Regulatory Factor 4 (IRF4), a transcription factor with no known role in melanocyte biology, is strongly associated with sensitivity of skin to sun exposure, freckles, blue eyes, and brown hair color. Here, we de...
Iris is a strong biometric tool used for human authentication. In this methodology, the patterns in the iris such as rings, furrows and freckles can be envisaged a set of Bezier curves and hence represented by the corresponding Bezier points, resulting in considerable reduction in the file size. After the iris is captured using scanner, the patterns are extracted from the scanned image. Then th...
Segregation defects greatly affect the service performance and working life of castings during vacuum arc remelting (VAR) process. However, corresponding research on prediction segregation is still not comprehensive. Through considering influence water-cooled crucible electromagnetic field inside an ingot, a full-scale model for comprehensive freckles macrosegregation VAR process developed in t...
Neurofibromatosis type 1 (NF1) is the most common neurocutaneous disease. Main neurologic manifestations are represented by neoplasms such as optic gliomas, but epilepsy can occur by CNS lesions in less than 10%. Our patient was diagnosed, based on café-au-lait spots and axillary freckles. Her brain MRI did not show only multiple CNS lesions, like hamartomas, but also mesial temporal lesions. O...
We report a case of synchronous multiple colon adenocarcinomas in a patient with neurofibromatosis type 1 (NF1). NF1 is an autosomal dominant inherited disorder and patients with NF1 have high risk for both benign and malignant tumors. However, adenocarcinomas involving the colon have rarely been reported in patients with NF1. A 61-year-old man was referred for generalized peritonitis due to de...
Somali women often use creams and soaps to lighten skin tone, fade freckles or get rid of age spots. Use of these products raises a health concern, as some have been found to contain mercury. This article describes an investigation that involved interviewing Somali women about skin-lightening practices and the products they use and then testing those products for mercury. Twenty-seven samples o...
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