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https://www.readbyqxmd.com/read/29772822/measurement-of-wall-shear-stress-in-high-speed-air-flow-using-shear-sensitive-liquid-crystal-coating
#1
Jisong Zhao
Wall shear stress is an important quantity in fluid mechanics, but its measurement is a challenging task. An approach to measure wall shear stress vector distribution using shear-sensitive liquid crystal coating (SSLCC) is described. The wall shear stress distribution on the test surface beneath high speed jet flow is measured while using the proposed technique. The flow structures inside the jet flow are captured and the results agree well with the streakline pattern that was visualized using the oil-flow technique...
May 17, 2018: Sensors
https://www.readbyqxmd.com/read/29772661/tensile-property-of-ansi-304-stainless-steel-weldments-subjected-to-cavitation-erosion-based-on-treatment-of-laser-shock-processing
#2
Lei Zhang, Yue-Hua Liu, Kai-Yu Luo, Yong-Kang Zhang, Yong Zhao, Jian-Yun Huang, Xu-Dong Wu, Chuang Zhou
Tensile property was one important index of mechanical properties of ANSI 304 stainless steel laser weldments subjected to cavitation erosion (CE). Laser shock processing (LSP) was utilized to strengthen the CE resistance, and the tensile property and fracture morphology were analyzed through three replicated experiment times. Results showed tensile process of treated weldments was composed of elastic deformation, plastic deformation, and fracture. The elastic limit, elastic modulus, elongation, area reduction, and ultimate tensile strength of tensile sample after CE were higher in view of LSP...
May 16, 2018: Materials
https://www.readbyqxmd.com/read/29768578/-work-accidents-and-automatic-circuit-reclosers-in-the-electricity-sector-beyond-the-immediate-causes
#3
Alessandro Jose Nunes da Silva, Ildeberto Muniz de Almeida, Rodolfo Andrade de Gouveia Vilela, Renata Wey Berti Mendes, Sandra Lorena Beltran Hurtado
The Brazilian electricity sector has recorded high work-related mortality rates that have been associated with outsourcing, used to cut costs. In order to decrease the power outage time for consumers, the industry adopted the automatic circuit recloser as the technical solution. The device has hazardous implications for maintenance workers. The aim of this study was to analyze the origins and consequences of work accidents in power systems with automatic circuit recloser, using the Accident Analysis and Prevention (AAP) model...
May 10, 2018: Cadernos de Saúde Pública
https://www.readbyqxmd.com/read/29758192/gastric-mucosal-metastasis-of-prostate-cancer
#4
Hayretdin Koklu, Gokhan Gedikoglu, Taylan Kav
A 65-year-old male patient who had been hospitalized in the ıntensive care unit for pneumonia presented with hematemesis and melena. He was diagnosed with metastatic adenocarcinoma of prostate (multiple bone and lung metastases), which was accompanied by diabetes mellitus, hypertension, and coronary heart disease. The hemoglobin levels decreased from 11.4 g/dL to 7.3 g/dL during follow-up. Upper endoscopy revealed widespread distribution of numerous umbilicated nodules with varying sizes (from 0.5 to 2 cm) on gastric mucosa (A, B, C)...
May 11, 2018: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/29753197/violence-selection-and-infant-mortality-in-congo
#5
Olivier Dagnelie, Giacomo Davide De Luca, Jean-François Maystadt
This paper documents the effects of the recent civil war in the Democratic Republic of Congo on mortality both in utero and during the first year of life. It instruments for conflict intensity using a mineral price index, which exploits the exogenous variation in the potential value of mineral resources generated by changes in world mineral prices to predict the geographic distribution of the conflict. Using estimates of civil war exposure on mortality across male and female newborn to assess their relative health, it provides evidence of culling effect (in utero selection) as a consequence of in utero shocks...
February 14, 2018: Journal of Health Economics
https://www.readbyqxmd.com/read/29739320/mobilization-of-retrotransposons-as-a-cause-of-chromosomal-diversification-and-rapid-speciation-the-case-for-the-antarctic-teleost-genus-trematomus
#6
J Auvinet, P Graça, L Belkadi, L Petit, E Bonnivard, A Dettaï, W H Detrich, C Ozouf-Costaz, D Higuet
BACKGROUND: The importance of transposable elements (TEs) in the genomic remodeling and chromosomal rearrangements that accompany lineage diversification in vertebrates remains the subject of debate. The major impediment to understanding the roles of TEs in genome evolution is the lack of comparative and integrative analyses on complete taxonomic groups. To help overcome this problem, we have focused on the Antarctic teleost genus Trematomus (Notothenioidei: Nototheniidae), as they experienced rapid speciation accompanied by dramatic chromosomal diversity...
May 9, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29727378/patient-and-professional-factors-that-impact-the-perceived-likelihood-and-confidence-of-healthcare-professionals-to-discuss-implantable-cardioverter-defibrillator-deactivation-in-advanced-heart-failure-results-from-an-international-factorial-survey
#7
Loreena Hill, Sonja McIlfatrick, Brian J Taylor, Tiny Jaarsma, Debra Moser, Paul Slater, Toni McAloon, Lana Dixon, Patrick Donnelly, Anna Stromberg, Donna Fitzsimons
BACKGROUND: Rate of implantable cardioverter defibrillator (ICD) implantations is increasing in patients with advanced heart failure. Despite clear guideline recommendations, discussions addressing deactivation occur infrequently. AIM: The aim of this article is to explore patient and professional factors that impact perceived likelihood and confidence of healthcare professionals to discuss ICD deactivation. METHODS AND RESULTS: Between 2015 and 2016, an international sample of 262 healthcare professionals (65% nursing, 24% medical) completed an online factorial survey, encompassing a demographic questionnaire and clinical vignettes...
April 26, 2018: Journal of Cardiovascular Nursing
https://www.readbyqxmd.com/read/29717688/review-semen-handling-time-of-insemination-and-insemination-technique-in-cattle
#8
M G Diskin
In cattle artificial insemination plays not only a vital role in the successful establishment of pregnancy, which is a prerequisite for initiation of the subsequent lactation, but also in accelerating genetic improvement and facilitating the distribution of semen from genetically elite sires. The latter has been greatly facilitated by the ability to successfully cryopreserve semen. The objective of an insemination is to ensure that there is an adequate reservoir of competent, capacitated, motile sperm in the caudal region of the oviductal isthmus, the site of the main sperm reservoir in the cow, at the time of ovulation to ensure fertilisation...
May 2, 2018: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/29710752/effect-of-ventricular-myocardium-characteristics-on-the-defibrillation-threshold
#9
Li Qian, Jianfei Wang, Lian Jin, Biao Song, Xiaomei Wu
Myocardium characteristics differ markedly among individuals and play an important role in defibrillation threshold. The accuracy of simulation models used in most published studies are still have room to be improved and most of them only discussed the effect of myocardial anisotropy on defibrillation threshold. In our manuscript, a rabbit ventricular finite-element (FE) volume conductor model with high precision was constructed. Ventricular myocardium characteristics include cardiomyocyte coupling and the degree of myocardial anisotropy, which are represented as the value and the ratio of anisotropic conductivity, respectively...
April 17, 2018: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/29707847/signatures-of-local-adaptation-along-environmental-gradients-in-a-range-expanding-damselfly-ischnura-elegans
#10
Rachael Y Dudaniec, Chuan Ji Yong, Lesley T Lancaster, Erik I Svensson, Bengt Hansson
Insect distributions are shifting rapidly in response to climate change and are undergoing rapid evolutionary change. We investigate the molecular signatures underlying local adaptation in the range-expanding damselfly, Ischnura elegans. Using a landscape genomic approach combined with generalized dissimilarity modelling (GDM), we detect selection signatures on loci via allelic frequency change along environmental gradients. We analyse 13,612 Single Nucleotide Polymorphisms (SNPs), derived from Restriction site-Associated DNA sequencing (RADseq), in 426 individuals from 25 sites spanning the I...
April 29, 2018: Molecular Ecology
https://www.readbyqxmd.com/read/29702669/heat-shock-proteins-expressed-in-the-marsupial-tasmanian-devil-are-potential-antigenic-candidates-in-a-vaccine-against-devil-facial-tumour-disease
#11
Cesar Tovar, Amanda L Patchett, Vitna Kim, Richard Wilson, Jocelyn Darby, A Bruce Lyons, Gregory M Woods
The Tasmanian devil (Sarcophilus harrisii), the largest extant carnivorous marsupial and endemic to Tasmania, is at the verge of extinction due to the emergence of a transmissible cancer known as devil facial tumour disease (DFTD). DFTD has spread over the distribution range of the species and has been responsible for a severe decline in the global devil population. To protect the Tasmanian devil from extinction in the wild, our group has focused on the development of a prophylactic vaccine. Although this work has shown that vaccine preparations using whole DFTD tumour cells supplemented with adjuvants can induce anti-DFTD immune responses, alternative strategies that induce stronger and more specific immune responses are required...
2018: PloS One
https://www.readbyqxmd.com/read/29702234/immuno-protective-role-of-biologically-synthesized-dietary-selenium-nanoparticles-against-multiple-stressors-in-pangasinodon-hypophthalmus
#12
Neeraj Kumar, K K Krishnani, Sanjay Kumar Gupta, Rupam Sharma, Raju Baitha, Dilip Kumar Singh, Narendra Pratap Singh
An environment friendly and sustainable approach is being emerged in the area of nanotechnology for accelerated growth and development of culturable aquatic animals hence green chemistry is gaining momentum in recent years. The present study has been carried out to delineate the effects of selenium nanoparticles (Se-NPs) on growth performance, antioxidative status and immunity of fish reared under lead (Pb) and high temperature (34 °C). Three hundred and sixty five fish were equally distributed in seven treatments in triplicates...
April 24, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29700654/the-protein-protein-interaction-network-and-clinical-significance-of-heat-shock-proteins-in-esophageal-squamous-cell-carcinoma
#13
Hong Sun, Xinyi Cai, Haofeng Zhou, Xiaoqi Li, Zepeng Du, Haiying Zou, Jianyi Wu, Lei Xie, Yinwei Cheng, Wenming Xie, Xiaomei Lu, Liyan Xu, Longqi Chen, Enmin Li, Bingli Wu
Heat-shock proteins (HSPs), one of the evolutionarily conserved protein families, are widely found in various organisms, and play important physiological functions. Nevertheless, HSPs have not been systematically analyzed in esophageal squamous cell carcinoma (ESCC). In this study, we applied the protein-protein interaction (PPI) network methodology to explore the characteristics of HSPs, and integrate their expression in ESCC. First, differentially expressed HSPs in ESCC were identified from our previous RNA-seq data...
April 27, 2018: Amino Acids
https://www.readbyqxmd.com/read/29693936/cardiac-point-of-care-using-ultrasound
#14
Mitsuharu Kodaka
Patients with cardiac disease have high mortality rates, mainly owing to shock. Therefore, evaluation of cardiac function is one of the most challenging issues in the intensive and critical care unit. Cardiac point-of-care tests using ultrasound, such as focus assessed transthoracic echo (FATE) and rapid ultrasound in shock (RUSH). are useful for diagnosis and initial care of such patients. The author will introduce first a basic FATE protocol of how to scan from position 1-4, including subcostal 4-chamber, apical 4-chamber, parasternal long and short axis, and pleural scanning...
May 2017: Masui. the Japanese Journal of Anesthesiology
https://www.readbyqxmd.com/read/29686180/chromobacterium-violaceum-the-deadly-sepsis
#15
Guntur Darmawan, R N Yasmin Kusumawardhani, Bachti Alisjahbana, Trinugroho Heri Fadjari
Chromobacterium violaceum is a Gram-negative facultatively anaerobic, oxidase-positive bacterium producing a dark violet antioxidant pigment called violacein. It is an opportunistic pathogen and has an ubiquitous distribution, mainly resides in water and soil of tropical and subtropical regions.An-18-year-old man referred to the emergency room with a 5-day history of progressively worsening swelling of the right cheek. He sought consult and hospitalized at another institution for three days prior this admission; however, his condition deteriorated...
January 2018: Acta Medica Indonesiana
https://www.readbyqxmd.com/read/29683829/harmful-or-physiologic-diagnosing-fibrinolysis-shutdown-in-a-trauma-cohort-with-rotational-thromboelastometry
#16
J Carolina Gomez-Builes, Sergio A Acuna, Bartolomeu Nascimento, Fabiana Madotto, Sandro B Rizoli
BACKGROUND: Despite its central role in early trauma coagulopathy, abnormal fibrinolysis continues to be poorly understood. Excessive fibrinolysis is a known contributor to mortality. Recent studies with thromboelastography (TEG) suggest decreased fibrinolysis (or shutdown) may be just as harmful. Considering the broad use of 2 different viscoelastic assays, which are not interchangeable, we proposed for the first time to define and characterize fibrinolysis shutdown using rotational thromboelastometry (ROTEM)...
April 19, 2018: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29683753/fluid-therapy-and-shock-an-integrative-literature-review
#17
Joana Silva, Luís Gonçalves, Patrícia Pontífice Sousa
BACKGROUND: shock refers to a physiological situation that puts life at risk. Its early identification and the timely institution of therapeutic measures can avoid death. Despite the frequent administration of fluid therapy as a treatment for shock, the type and dose of fluids to be delivered remain undetermined. AIM: to determine the type of fluids to be administered and the type of approach to be performed in the different types of shock. METHOD: integrative literature review...
April 26, 2018: British Journal of Nursing: BJN
https://www.readbyqxmd.com/read/29672734/halyomorpha-halys-hemiptera-pentatomidae-winter-survival-feeding-activity-and-reproduction-rates-based-on-episodic-cold-shock-and-winter-temperature-regimes
#18
David M Lowenstein, Vaughn M Walton
Globally distributed nonnative insects thrive by having a generalist diet and persisting across large latitudinal gradients. Halyomorpha halys (Stål) (Hemiptera: Pentatomidae) is a cold-tolerant invasive species that enters reproductive diapause in temperate North American and European climates. While it can survive the acute effects of subzero (°C) temperatures, it is poorly understood how exposure to infrequent cold temperatures affects postdiapause survival and behavior. We studied the impacts of episodic cold shock at temperatures of -6 to -2 (°C) at the onset of H...
April 17, 2018: Journal of Economic Entomology
https://www.readbyqxmd.com/read/29670170/y-box-protein-associated-acidic-protein-ybap1-c1qbp-affects-the-localization-and-cytoplasmic-functions-of-yb-1
#19
Ken Matsumoto, Shingo Kose, Iku Kuwahara, Mami Yoshimura, Naoko Imamoto, Minoru Yoshida
The Y-box proteins are multifunctional nucleic acid-binding proteins involved in various aspects of gene regulation. The founding member of the Y-box protein family, YB-1, functions as a transcription factor as well as a principal component of messenger ribonucleoprotein particles (mRNPs) in somatic cells. The nuclear level of YB-1 is well correlated with poor prognosis in many human cancers. Previously, we showed that a Y-box protein-associated acidic protein, YBAP1, which is identical to complement component 1, q subcomponent-binding protein (C1QBP, also called gC1qR, hyaluronan-binding protein 1 [HABP1] or ASF/SF2-associated protein p32), relieves translational repression by YB-1...
April 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29655319/molecular-dynamics-simulations-of-site-point-mutations-in-the-tpr-domain-of-cyclophilin-40-identify-conformational-states-with-distinct-dynamic-and-enzymatic-properties
#20
Mert Gur, Elizabeth A Blackburn, Jia Ning, Vikram Narayan, Kathryn L Ball, Malcolm D Walkinshaw, Burak Erman
Cyclophilin 40 (Cyp40) is a member of the immunophilin family that acts as a peptidyl-prolyl-isomerase enzyme and binds to the heat shock protein 90 (Hsp90). Its structure comprises an N-terminal cyclophilin domain and a C-terminal tetratricopeptide (TPR) domain. Cyp40 is overexpressed in prostate cancer and certain T-cell lymphomas. The groove for Hsp90 binding on the TPR domain includes residues Lys227 and Lys308, referred to as the carboxylate clamp, and is essential for Cyp40-Hsp90 binding. In this study, the effect of two mutations, K227A and K308A, and their combinative mutant was investigated by performing a total of 5...
April 14, 2018: Journal of Chemical Physics
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