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https://www.readbyqxmd.com/read/29225491/three-dimensional-quasi-periodic-shifted-green-function-throughout-the-spectrum-including-wood-anomalies
#1
Oscar P Bruno, Stephen P Shipman, Catalin Turc, Venakides Stephanos
This work, part II in a series, presents an efficient method for evaluation of wave scattering by doubly periodic diffraction gratings at or near what are commonly called 'Wood anomaly frequencies'. At these frequencies, there is a grazing Rayleigh wave, and the quasi-periodic Green function ceases to exist. We present a modification of the Green function by adding two types of terms to its lattice sum. The first type are transversely shifted Green functions with coefficients that annihilate the growth in the original lattice sum and yield algebraic convergence...
November 2017: Proceedings. Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/29215021/an-improved-enso-simulation-by-representing-chlorophyll-induced-climate-feedback-in-the-ncar-community-earth-system-model
#2
Xianbiao Kang, Rong-Hua Zhang, Chuan Gao, Jieshun Zhu
The El Niño-Southern oscillation (ENSO) simulated in the Community Earth System Model of the National Center for Atmospheric Research (NCAR CESM) is much stronger than in reality. Here, satellite data are used to derive a statistical relationship between interannual variations in oceanic chlorophyll (CHL) and sea surface temperature (SST), which is then incorporated into the CESM to represent oceanic chlorophyll -induced climate feedback in the tropical Pacific. Numerical runs with and without the feedback (referred to as feedback and non-feedback runs) are performed and compared with each other...
December 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29208890/impact-induced-changes-in-source-depth-and-volume-of-magmatism-on-mercury-and-their-observational-signatures
#3
Sebastiano Padovan, Nicola Tosi, Ana-Catalina Plesa, Thomas Ruedas
Mercury's crust is mostly the result of partial melting in the mantle associated with solid-state convection. Large impacts induce additional melting by generating subsurface thermal anomalies. By numerically investigating the geodynamical effects of impacts, here we show that impact-generated thermal anomalies interact with the underlying convection modifying the source depth of melt and inducing volcanism that can significantly postdate the impact depending on the impact time and location with respect to the underlying convection pattern...
December 5, 2017: Nature Communications
https://www.readbyqxmd.com/read/29200150/alder-reilly-anomaly-in-the-cerebrospinal-fluid-of-a-child-with-hurler-syndrome
#4
Ashley L Lukefahr, Maria Proytcheva
Hurler syndrome is an autosomal recessive mucopolysaccharidosis characterized by intralysosomal accumulation of glycosaminoglycan fragments, with cellular accumulation of distended lysosomes resulting in interference with normal cell function. One of the peripheral blood features of mucopolysaccharidoses is the presence of numerous, dark lilac granules within lymphocytes, monocytes, and neutrophils, also known at Alder-Reilly anomaly. Here we describe intracytoplasmic granules with haloes in mononuclear cells present in the cerebrospinal fluid of a 2-year-old boy with the diagnosis of Hurler syndrome, undergoing pretransplant evaluation for an unrelated donor cord blood stem cell transplant...
December 1, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/29193240/intracranial-fetus-in-fetu-with-numerous-fully-developed-organs
#5
Kuntharee Traisrisilp, Kasemsri Srisupundit, Songkiet Suwansirikul, Thunya Norasetthada, Shanika Kosarat, Theera Tongsong
Fetus in fetu (FIF) is an extremely rare anomaly featuring a monozygotic, diamniotic, parasitic twin, enclosed within its host twin. It is characterized by the presence of vertebrae and well-developed organs in a fetiform mass. Only 18 cases of intracranial FIF have been published. Of them, only five cases were prenatally detected. This study prenatally demonstrated triplet FIFs at 31 weeks within amniotic-like sac in the fetal skull, consisting of multiple well-defined organs. The FIF attached to the host twin via body stalk containing a single main feeding artery and vein, representing umbilical vessels...
November 28, 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/29190652/range-based-volatility-expected-stock-returns-and-the-low-volatility-anomaly
#6
Benjamin M Blau, Ryan J Whitby
One of the foundations of financial economics is the idea that rational investors will discount stocks with more risk (volatility), which will result in a positive relation between risk and future returns. However, the empirical evidence is mixed when determining how volatility is related to future returns. In this paper, we examine this relation using a range-based measure of volatility, which is shown to be theoretically, numerically, and empirically superior to other measures of volatility. In a variety of tests, we find that range-based volatility is negatively associated with expected stock returns...
2017: PloS One
https://www.readbyqxmd.com/read/29174783/improving-results-of-surgery-for-ebstein-anomaly-where-are-we-after-235-cone-repairs
#7
Kimberly A Holst, Joseph A Dearani, Sameh Said, Roxann B Pike, Heidi M Connolly, Bryan C Cannon, Kristen L Sessions, Megan M O'Byrne, Patrick W O'Leary
BACKGROUND: Ebstein anomaly has heterogeneous anatomy and numerous operative techniques are described. Cone repair provides a near anatomic tricuspid valve repair. The purpose of this study was to examine our experience with cone repair. METHODS: Cone repair was performed in 235 consecutive patients with Ebstein anomaly, 134 children (57%) and 101 adults (43%), from June 2007 to October 2015. Median age was 15.6 years (range, 6 months to 73 years). Cone repair was the first operation in 192 patients (82%), the second in 41 (17%), and the third in 2 (1%)...
November 23, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29171184/structural-malformations-of-the-brain-eye-and-pituitary-gland-in-phace-syndrome
#8
Jack E Steiner, Garrett N McCoy, Christopher P Hess, William B Dobyns, Denise W Metry, Beth A Drolet, Mohit Maheshwari, Dawn H Siegel
PHACE syndrome is the association of segmental facial hemangiomas with congenital arterial, brain, cardiac, and ocular anomalies. Structural brain malformations affect 41-52% of PHACE patients and can be associated with focal neurologic deficits, developmental delays, and/or intellectual disability. To better characterize the spectrum of structural brain and other intracranial anomalies in PHACE syndrome, MRI scans of the head/neck were retrospectively reviewed in 55 patients from the PHACE Syndrome International Clinical Registry and Genetic Repository...
November 24, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/29167072/induction-of-anaesthesia-with-remifentanil-after-bolus-midazolam-administration-in-landrace-large-white-swine
#9
Argyro Zacharioudaki, Pavlos Lelovas, Theodoros N Sergentanis, George Karlis, Axel K Hansen, Apostolos Papalois, Theodoros Xanthos
OBJECTIVE: To investigate an alternative combination for anaesthesia induction in swine. STUDY DESIGN: Randomized, 'blinded' experimental study. ANIMALS: Forty-five Landrace/Large White swine weighing 20.0±1.5 kg. METHODS: Pulse oximetry, heart rate (HR) and blood pressure were measured after premedication with ketamine, midazolam and atropine as well as after intubation following induction with a fixed dose of 0.2 mg kg-1 midazolam combined with 1, 2, 3, 4 or 5 μg kg-1 remifentanil (groups R1, R2, R3, R4 and R5, respectively)...
April 17, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/29162069/martius-flap-for-recurrent-perineal-and-rectovaginal-fistulae-in-a-patient-with-crohn-s-disease-endometriosis-and-a-mullerian-anomaly
#10
Gaetano Gallo, Alberto Realis Luc, Giuseppe Clerico, Mario Trompetto
BACKGROUND: Rectovaginal fistulas represent 5% of all anorectal fistulae and are a disastrous manifestation of Crohn's disease that negatively affects patients' social and sexual quality of life. Treatment remains challenging for colorectal surgeons, and the recurrence rate remains high despite the numerous available options. CASE PRESENTATION: We describe a 31-year-old female patient with a Crohn's disease-related recurrent perineo-vaginal and recto-vaginal fistulae and a concomitant mullerian anomaly...
November 21, 2017: BMC Surgery
https://www.readbyqxmd.com/read/29152434/characterization-of-eyeball-loss-in-four-cities-of-colombia
#11
F Hernán Moreno-Caviedes, Nórida Velez Cuellar, Margarita Caicedo Zapata, Gabriel Triana Reina, Azucena Sánchez
PURPOSE: Describe the socio-demographic characteristics of anophthalmic patients examined at specialized centers of four cities in Colombia to know the different causes of eyeball loss. METHOD: A transversal retrospective study was done of 511 medical records from the specialized practices of four cities in Colombia. Socio-demographic data of patients who were seen between January 2011 and December 2013 were compiled. SOFA Statistics software v1.4.6 was used for this analysis...
September 11, 2017: Curēus
https://www.readbyqxmd.com/read/29130579/a-homozygous-deleterious-cdk10-mutation-in-a-patient-with-agenesis-of-corpus-callosum-retinopathy-and-deafness
#12
Vincent J Guen, Simon Edvardson, Nitay D Fraenkel, Aviva Fattal-Valevski, Chaim Jalas, Irene Anteby, Avraham Shaag, Talia Dor, David Gillis, Eitan Kerem, Jacqueline A Lees, Pierre Colas, Orly Elpeleg
The primary cilium is a key organelle in numerous physiological and developmental processes. Genetic defects in the formation of this non-motile structure, in its maintenance and function, underlie a wide array of ciliopathies in human, including craniofacial, brain and heart malformations, and retinal and hearing defects. We used exome sequencing to study the molecular basis of disease in an 11-year-old female patient who suffered from growth retardation, global developmental delay with absent speech acquisition, agenesis of corpus callosum and paucity of white matter, sensorineural deafness, retinitis pigmentosa, vertebral anomalies, patent ductus arteriosus, and facial dysmorphism reminiscent of STAR syndrome, a suspected ciliopathy...
November 12, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/29128521/prenatal-chromosomal-microarray-analysis-in-fetuses-with-congenital-heart-disease-a-prospective-cohort-study
#13
Yan Wang, Li Cao, Dong Liang, Lulu Meng, Yun Wu, Fengchang Qiao, Xiuqing Ji, Chunyu Luo, Jingjing Zhang, Tianhui Xu, Bin Yu, Leilei Wang, Ting Wang, Qiong Pan, Dingyuan Ma, Ping Hu, Zhengfeng Xu
BACKGROUD: Currently, chromosomal microarray analysis is considered as the first-tier test in pediatric care and prenatal diagnosis. However, the diagnostic yield of CMA for prenatal diagnosis of congenital heart disease has not been evaluated based on a large cohort. OBJECTIVE: Our aim was to evaluate the clinical utility of chromosomal microarray as the first-tier test for chromosomal abnormalities in fetuses with congenital heart disease. STUDY DESIGN: In this prospective study, 602 prenatal cases of congenital heart disease were investigated using SNP array over a 5-year period...
November 8, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29114927/genetic-study-of-non-syndromic-tooth-agenesis-through-the-screening-of-paired-box-9-msh-homeobox-1-axin-2-and-wnt-family-member-10a-genes-a-case-series
#14
Marwa Haddaji Mastouri, Peter De Coster, Aicha Zaghabani, Frej Jammali, Nabiha Raouahi, Amina Ben Salem, Ali Saad, Paul Coucke, Dorra H'mida Ben Brahim
Non-syndromic tooth agenesis (NSTA) is the most common developmental anomaly in humans. Several studies have been conducted on dental agenesis and numerous genes have been identified. However, the pathogenic mechanisms responsible for NSTA are not clearly understood. We studied a group of 28 patients with sporadic NSTA and nine patients with a family history of tooth agenesis. We focused on four genes - paired box 9 (PAX9), Wnt family member 10A (WNT10A), msh homeobox 1 (MSX1), and axin 2 (AXIN2) - using direct Sanger sequencing of the exons and intron-exon boundaries...
November 8, 2017: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/29062253/gorlin-goltz-syndrome
#15
Betül Şereflican, Bengü Tuman, Murat Şereflican, Sıddıka Halıcıoğlu, Gülzade Özyalvaçlı, Seval Bayrak
Gorlin-Goltz syndrome is a rare multisystemic disease inherited in an autosomal dominant pattern. It is characterized by numerous basal cell carcinoma of the skin, jaw cysts, and skeletal anomalies such as frontal bossing, vertebral anomalies, palmoplantar pits, and falx cerebri calcification. There is a tendency to tumors including medullablastoma, fibroma, rabdomyoma, leiomyosarcoma etc.. The diagnosis is based on major and minor clinical and radiologic criteria. Early diagnosis and treatment are of utmost importance in reducing the severity of long-term sequelae of this syndrome...
September 2017: Türk Pediatri Arşivi
https://www.readbyqxmd.com/read/29043801/compressibility-anomalies-in-stretched-water-and-their-interplay-with-density-anomalies
#16
Vincent Holten, Chen Qiu, Emmanuel Guillerm, Max Wilke, Jaroslav Rička, Martin Frenz, Frédéric Caupin
Water keeps puzzling scientists because of its numerous properties which behave oppositely to those of usual liquids: for instance, water expands upon cooling, and liquid water is denser than ice. To explain this anomalous behavior, several theories have been proposed, with different predictions for the properties of supercooled water (liquid at conditions where ice is stable). However, discriminating between those theories with experiments has remained elusive because of spontaneous ice nucleation. Here we measure the sound velocity in liquid water stretched to negative pressure and derive an experimental equation of state, which reveals compressibility anomalies...
October 31, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/29041055/fano-resonances-in-plasmonic-heptamer-nano-hole-arrays
#17
Akram Hajebifard, Pierre Berini
The optical properties of gold heptamer nanohole arrays have been investigated theoretically and numerically. This structure support pronounced Fano resonances with high transmittance (~50%) and narrow bandwidths (down to 12 nm). The Fano features arise from the interference between light directly transmitted through the holes, and light indirectly scattered through the excitation of localized surface plasmon polaritons (LSPPs), propagating surface plasmon polaritons (SPPs), or/and waves related to Wood's anomaly (WA)...
August 7, 2017: Optics Express
https://www.readbyqxmd.com/read/29033291/controversies-in-poland-syndrome-alternative-diagnoses-in-patients-with-congenital-pectoral-muscle-deficiency
#18
Martijn Baas, Elise B Burger, Dimitri Sneiders, Robert-Jan H Galjaard, Steven E R Hovius, Christianne A van Nieuwenhoven
PURPOSE: Poland syndrome was first described as a deficiency of the pectoral muscle with ipsilateral symbrachydactyly. Currently, numerous case reports describe variations of Poland syndrome in which pectoral muscle deficiency is often used as the only defining criterion. However, more syndromes can present with pectoral muscle deficiency. The aim of this review is to illustrate the diversity of the phenotypic spectrum of Poland syndrome and to create more awareness for alternative diagnoses in pectoral muscle deficiency...
October 13, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28989916/use-of-progesterone-supplement-therapy-for-prevention-of-preterm-birth-review-of-literatures
#19
REVIEW
Suk-Joo Choi
Preterm birth (PTB) is one of the most common complications during pregnancy and it primarily accounts for neonatal mortality and numerous morbidities including long-term sequelae including cerebral palsy and developmental disability. The most effective treatment of PTB is prediction and prevention of its risks. Risk factors of PTB include history of PTB, short cervical length (CL), multiple pregnancies, ethnicity, smoking, uterine anomaly and history of curettage or cervical conization. Among these risk factors, history of PTB, and short CL are the most important predictive factors...
September 2017: Obstetrics & Gynecology Science
https://www.readbyqxmd.com/read/28987056/the-role-of-the-cerebellum-in-the-regulation-of-language-functions
#20
REVIEW
Anna Starowicz-Filip, Adrian Andrzej Chrobak, Marek Moskała, Roger M Krzyżewski, Borys Kwinta, Stanisław Kwiatkowski, Olga Milczarek, Anna Rajtar-Zembaty, Dorota Przewoźnik
The present paper is a review of studies on the role of the cerebellum in the regulation of language functions. This brain structure until recently associated chiefly with motor skills, visual-motor coordination and balance, proves to be significant also for cognitive functioning. With regard to language functions, studies show that the cerebellum determines verbal fluency (both semantic and formal) expressive and receptive grammar processing, the ability to identify and correct language mistakes, and writing skills...
August 29, 2017: Psychiatria Polska
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