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https://www.readbyqxmd.com/read/28437869/risk-modeling-of-interdependent-complex-systems-of-systems-theory-and-practice
#1
Yacov Y Haimes
The emergence of the complexity characterizing our systems of systems (SoS) requires a reevaluation of the way we model, assess, manage, communicate, and analyze the risk thereto. Current models for risk analysis of emergent complex SoS are insufficient because too often they rely on the same risk functions and models used for single systems. These models commonly fail to incorporate the complexity derived from the networks of interdependencies and interconnectedness (I-I) characterizing SoS. There is a need to reevaluate currently practiced risk analysis to respond to this reality by examining, and thus comprehending, what makes emergent SoS complex...
April 24, 2017: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/28437822/osmotic-demyelination-syndrome-due-to-severe-hyponatremia-mimicking-hypoxic-encephalopathy
#2
Felix Wicke, Sasha Moreitz, Stefan Weidauer
Hyponatremia and its rapid correction is a well-known cause of osmotic demyelination most commonly affecting the pons. We report on a case of severe hyponatremia likely due to psychogenic polydipsia resulting in hypotonic hyperhydration with resulting cortical laminar necrosis on initial imaging, mimicking hypoxic brain damage. Pontine myelinolysis became apparent on follow-up imaging, illustrating the diagnostic challenges of extrapontine manifestations of severe hyponatremia.
April 2017: Fortschritte der Neurologie-Psychiatrie
https://www.readbyqxmd.com/read/28437753/p-gp-modulatory-acetyl-11-keto-%C3%AE-boswellic-acid-based-nanoemulsified-carrier-system-for-augmented-oral-chemotherapy-of-docetaxel
#3
Gitu Pandey, Naresh Mittapelly, Guru Raghavendra Valicherla, Ravi Prakash Shukla, Shweta Sharma, Venkatesh Teja Banala, Sandeep Urandur, Arun Kumar Jajoriya, Kalyan Mitra, D P Mishra, J R Gayen, P R Mishra
In spite of being a very potent and promising drug against many types of cancer, docetaxel suffers the disadvantage of low solubility and poor bioavailability rendering it unsuitable for oral administration. Also, the available marketed formulation for intravenous administration has its inherent drawbacks owing to the presence of polysorbate 80. Here, we exploited the anticancer and P-gp inhibitory potential of naturally occurring frankincense oil to fabricate a stable docetaxel loaded nanoemulsified carrier system for oral delivery...
April 15, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28437751/effects-of-picrotoxin-on-zebrafish-larvae-behaviors-a-comparison-study-with-ptz
#4
Xue Yang, Jia Lin, Xiaolan Peng, Qin Zhang, Yinglan Zhang, Ning Guo, Shuizhen Zhou, Qiang Li
Larval zebrafish (Danio rerio) have been suggested as a high-throughput experimental animal model for epilepsy-related genetic and developmental studies. The behavioral manifestations in response to the seizure-inducing drugs picrotoxin (PTX) (1, 5, 25, 125, or 625μM) or pentylenetetrazole (PTZ) (1, 2, 4, 8, or 16mM) under light-dark conditions were studied using zebrafish larvae at 5days post-fertilization (dpf). Two behavioral parameters, locomotor activity and thigmotaxis behavior, were analyzed. We conclude that high concentrations of PTX treatment increased locomotion and thigmotaxis in 5 dpf zebrafish larvae under continuous illumination and the locomotion of PTX-treated zebrafish was decreased under the dark condition...
April 21, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28437712/raspberry-pomace-alters-cecal-microbial-activity-and-reduces-secondary-bile-acids-in-rats-fed-a-high-fat-diet
#5
Bartosz Fotschki, Jerzy Juśkiewicz, Adam Jurgoński, Neil Rigby, Michał Sójka, Krzysztof Kołodziejczyk, Alan Mackie, Zenon Zduńczyk
The profile of bile acids (BA) largely depends on the enzymatic activity of the microbiota, but this can be modulated by the dietary addition of biologically active compounds, e.g., polyphenols and polyunsaturated fatty acids. The aim of this study was to examine the effect of dietary raspberry pomace as a rich source of biologically active compounds on microbial activity and the BA profile in the caecum of rats fed a high-fat diet. Wistar rats were fed the standard diet AIN-93, a high-fat diet or a modified high-fat diet enriched with 7% different types of processed raspberry pomaces produced by standard grinding and fine grinding, with or without seeds...
April 7, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28437556/inheritance-of-bacterial-spot-resistance-in-capsicum-annuum-var-annuum
#6
L R A Silva, R Rodrigues, S Pimenta, J W S Correa, M S B Araújo, C S Bento, C P Sudré
Since 2008, Brazil is the largest consumer of agrochemicals, which increases production costs and risks of agricultural products, environment, and farmers' contamination. Sweet pepper, which is one of the main consumed vegetables in the country, is on top of the list of the most sprayed crops. The bacterial spot, caused by Xanthomonas spp, is one of the most damaging diseases of pepper crops. Genetic resistant consists of a suitable way of disease control, but development of durable resistant cultivars as well as understanding of plant-bacterium interaction is being a challenge for plant breeders and pathologists worldwide...
April 20, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28437535/clinical-aspects-of-glucose-transporter-type-1-deficiency-information-from-a-global-registry
#7
Jian Hao, Dorothy I Kelly, Jianzhong Su, Juan M Pascual
Importance: Case reports regularly document unique or unusual aspects of glucose transporter type 1 deficiency (G1D). In contrast, population studies from which to draw global inferences are lacking. Twenty-five years after the earliest case reports, this deficiency still particularly affects treatment and prognostic counseling. Objective: To examine the most common features of G1D. Design, Setting, and Participants: In this study, data were collected electronically from 181 patients with G1D through a web-based, worldwide patient registry from December 1, 2013, through December 1, 2016...
April 24, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28437459/management-and-outcomes-of-severe-dengue-patients-presenting-with-sepsis-in-a-tropical-country
#8
Prapit Teparrukkul, Viriya Hantrakun, Nicholas P J Day, T Eoin West, Direk Limmathurotsakul
BACKGROUND: Dengue is a common cause of infection in adults in tropical countries. Sepsis is a syndrome of systemic manifestations induced by infection of any organisms; including bacterial, fungal and viral agents. Here, we investigated the diagnosis, management and outcomes of dengue patients presenting with sepsis in a prospective study of community-acquired sepsis in Thailand. METHODS: From June to December 2015, 874 adult patients (age≥18 years) with suspected or documented community-acquired infection, with ≥3 diagnostic criteria for sepsis according to the Surviving Sepsis Campaign 2012, and within 24 hours of admission were evaluated...
2017: PloS One
https://www.readbyqxmd.com/read/28437337/axial-plane-deformity-of-the-shoulder-in-adolescent-idiopathic-scoliosis
#9
Venugopal K Menon, Naveen Tahasildar, Haroon M Pillay, Anbuselvam M
STUDY DESIGN: Prospective observational study. OBJECTIVE: To study axial plane deformation of the shoulder in adolescent idiopathic scoliosis (AIS) and try to correlate it with curve type and surgical correction. SUMMARY OF BACKGROUND DATA: It is established that AIS is a 3-dimensional deformity. The rib hump is the most common manifestation of axial plane deformations; the least common manifestation seems to be upper trunk and shoulder rotation, which has been hitherto undescribed...
May 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28437320/development-of-a-claims-based-frailty-indicator-anchored-to-a-well-established-frailty-phenotype
#10
Jodi B Segal, Hsien-Yen Chang, Yu Du, Jeremy D Walston, Michelle C Carlson, Ravi Varadhan
BACKGROUND: Fried and colleagues described a frailty phenotype measured in the Cardiovascular Health Study (CHS). This phenotype is manifest when ≥3 of the following are present: low grip strength, low energy, slowed waking speed, low physical activity, or unintentional weight loss. We sought to approximate frailty phenotype using only administrative claims data to enable frailty to be assessed without physical performance measures. STUDY DESIGN: We used the CHS cohort data linked to participants Medicare claims...
April 21, 2017: Medical Care
https://www.readbyqxmd.com/read/28437254/interaction-driven-distinctive-electronic-states-of-artificial-atoms-at-the-zno-interface
#11
Tapash Chakraborty, Aram Manaselyan, Manuk Barseghyan
We have investigated the electronic states of planar quantum dots at the ZnO interface containing a few interacting electrons in an externally applied magnetic field. The electron-electron interaction effects are expected to be much stronger in this case than in traditional semiconductor quantum systems, such as in GaAs or InAs quantum dots. In order to highlight that stronger Coulomb effects in the ZnO quantum dots, we have compared the energy spectra and the magnetization in this system to those of the InAs quantum dots...
April 24, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28437101/ground-state-and-excited-state-tuning-in-ferric-dipyrrin-complexes-promoted-by-ancillary-ligand-exchange
#12
Claudia Kleinlein, Shao-Liang Zheng, Theodore A Betley
Three ferric dipyrromethene complexes featuring different ancillary ligands were synthesized by one electron oxidation of ferrous precursors. Four-coordinate iron complexes of the type ((Ar)L)FeX2 [(Ar)L = 1,9-(2,4,6-Ph3C6H2)2-5-mesityldipyrromethene] with X = Cl or (t)BuO were prepared and found to be high-spin (S = (5)/2), as determined by superconducting quantum interference device magnetometry, electron paramagnetic resonance, and (57)Fe Mössbauer spectroscopy. The ancillary ligand substitution was found to affect both ground state and excited properties of the ferric complexes examined...
April 24, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28437081/silicon-induced-uv-transparency-in-phosphate-glasses-and-its-application-to-the-enhancement-of-the-uv-type-b-emission-of-gd-3
#13
José A Jiménez
The silicon route to improve the ultraviolet (UV) transparency in phosphate glasses is investigated, and further exploited to enhance the UV type B (280-320 nm) emission of gadolinium(III) relevant for biomedical applications. The glasses were synthesized with a barium-phosphate composition by melt-quenching in ambient atmosphere, and the optical properties investigated by optical absorption and photoluminescence (PL) spectroscopy including emission decay kinetics. An improvement in the UV transparency was gradually developed for the glasses melted merely with increasing amounts of Si powder...
April 24, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28437039/uterine-artery-pseudoaneurysm-bleeding-one-decade-after-caesarean-section-a-case-report
#14
Liza Johannesson, Jennifer Mason, Martin K Oehler
Uterine artery pseudoaneurysm (UAP) can cause severe secondary post-partum hemorrhage. The lag time between the triggering event and the manifestation of UAP reportedly usually occurs within a couple of weeks. In this case report, a 46-year-old woman with no significant comorbidities presented with a one-month history of increasing lower abdominal pain. She had previously undergone two cesarean sections (14 and 10 years earlier). A computed tomography angiogram revealed a left UAP. The patient was successfully treated by selective embolization and had an uneventful recovery...
April 24, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28437022/-wiring-fe-nx-embedded-porous-carbon-framework-onto-1d-nanotubes-for-efficient-oxygen-reduction-reaction-in-alkaline-and-acidic-media
#15
Sung Hoon Ahn, Xingwen Yu, Arumugam Manthiram
This study presents a novel metal-organic-framework-engaged synthesis route based on porous tellurium nanotubes as a sacrificial template for hierarchically porous 1D carbon nanotubes. Furthermore, an ultrathin Fe-ion-containing polydopamine layer has been introduced to generate highly effective FeNx C active sites into the carbon framework and to induce a high degree of graphitization. The synergistic effects between the hierarchically porous 1D carbon structure and the embedded FeNx C active sites in the carbon framework manifest in superior catalytic activity toward oxygen reduction reaction (ORR) compared to Pt/C catalyst in both alkaline and acidic media...
April 24, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28437003/high-intensity-focused-ultrasound-for-the-treatment-of-adenomyosis-selection-criteria-efficacy-safety-and-fertility
#16
Lian Zhang, Fangwen Rao, Raymond Setzen
Adenomyosis is a disorder of uterus in which endometrial glands and stroma are present within the uterine musculature. The main clinical manifestations are dysmenorrhea and menorrhagia. Adenomyosis has a great impact on both the quality of life and fertility of women. The treatment of adenomyosis remains an immense challenge MATERIAL AND METHODS: Relevant articles were searched through MEDLINE, Pubmed between 2000 and March 2017. The search terms of adenomyosis, magnetic resonance imaging (MRI) features of adenomyosis, high intensity focused ultrasound (HIFU), Ultrasound-guided HIFU and MRgFUS were used...
April 24, 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/28436741/deep-learning-at-chest-radiography-automated-classification-of-pulmonary-tuberculosis-by-using-convolutional-neural-networks
#17
Paras Lakhani, Baskaran Sundaram
Purpose To evaluate the efficacy of deep convolutional neural networks (DCNNs) for detecting tuberculosis (TB) on chest radiographs. Materials and Methods Four deidentified HIPAA-compliant datasets were used in this study that were exempted from review by the institutional review board, which consisted of 1007 posteroanterior chest radiographs. The datasets were split into training (68.0%), validation (17.1%), and test (14.9%). Two different DCNNs, AlexNet and GoogLeNet, were used to classify the images as having manifestations of pulmonary TB or as healthy...
April 24, 2017: Radiology
https://www.readbyqxmd.com/read/28436716/skin-score-correlates-with-global-dna-methylation-and-gsto1-a140d-polymorphism-in-arsenic-affected-population-of-eastern-india
#18
Moumita Majumder, Uma B DasGupta, D N Guha Mazumder, Nilansu Das
Arsenic is a potent environmental toxicant causing serious public health concerns in India, Bangladesh and other parts of the world. Gene and promoter specific hypermethylation has been reported in different arsenic exposed cell lines, whereas whole genome DNA methylation study suggested genomic hypo and hypermethylation after arsenic exposure in in-vitro and in-vivo studies. Along with other characteristic biomarkers, arsenic toxicity leads to typical skin lesions. The present study demonstrates significant correlation between severities of skin manifestations with their whole genome DNA methylation status as well as with a particular polymorphism (Ala 140 Asp) status in arsenic metabolizing enzyme Glutathione S-transferase Omega-1 (GSTO1) in arsenic exposed population of the district of Nadia, West Bengal, India...
April 24, 2017: Toxicology Mechanisms and Methods
https://www.readbyqxmd.com/read/28436690/a-comparison-of-the-nomological-networks-associated-with-forced-choice-and-likert-formats-of-the-narcissistic-personality-inventory
#19
Joshua D Miller, Brittany Gentile, Nathan T Carter, Michael Crowe, Brian J Hoffman, W Keith Campbell
The Narcissistic Personality Inventory (NPI) is one of the most popular measures of narcissism. However, its use of a forced-choice response set might negatively affect some of its psychometric properties. The purpose of this research was to compare a Likert version of the NPI, in which only the narcissistic response of each pair was given, to the original NPI, in 3 samples of participants (N = 1,109). To this end, we compared the nomological networks of the forced-choice and Likert formats of the NPI in relation to alternative measures of narcissism, narcissistic personality disorder, entitlement, self-esteem, general personality traits (reported by self and informants), interpersonal styles, and general pathological traits included in the DSM-5...
April 24, 2017: Journal of Personality Assessment
https://www.readbyqxmd.com/read/28436534/a-novel-trpa1-variant-is-associated-with-carbamazepine-responsive-cramp-fasciculation-syndrome
#20
M J Nirenberg, R Chaouni, T M Biller, R M Gilbert, C Paisán-Ruiz
Cramp-fasciculation syndrome (CFS) is a rare muscle hyperexcitability syndrome that presents with muscle cramps, fasciculations, and stiffness, as well as pain, fatigue, anxiety, hyperreflexia, and paresthesias. Although familial cases have been reported, a genetic etiology has not yet been identified. We performed whole-exome sequencing followed by validation and cosegregation analyses on a father-son pair with CFS. Both subjects manifested other hypersensitivity-hyperexcitability symptoms, including asthma, gastroesophageal reflux, migraine, restless legs syndrome, tremor, cold hyperalgesia, and cardiac conduction defects...
April 24, 2017: Clinical Genetics
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