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TheScientificWorldJournal

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https://www.readbyqxmd.com/read/28547001/new-mathematical-model-for-the-surface-area-of-the-left-ventricle-by-the-truncated-prolate-spheroid
#1
José Sérgio Domingues, Marcos de Paula Vale, Carlos Barreira Martinez
The main aim of this study was the formula application of the superficial area of a truncated prolate spheroid (TPS) in Cartesian coordinates in obtaining a cardiac parameter that is not so much discussed in literature, related to the left ventricle (LV) surface area of the human heart, by age and sex. First we obtain a formula for the area of a TPS. Then a simple mathematical model of association of the axes measures of a TPS with the axes of the LV is built. Finally real values of the average dimensions of the humans LV are used to measure surface areas approximations of this heart chamber...
2017: TheScientificWorldJournal
https://www.readbyqxmd.com/read/28540362/an-optimal-current-controller-design-for-a-grid-connected-inverter-to-improve-power-quality-and-test-commercial-pv-inverters
#2
Ali Algaddafi, Saud A Altuwayjiri, Oday A Ahmed, Ibrahim Daho
Grid connected inverters play a crucial role in generating energy to be fed to the grid. A filter is commonly used to suppress the switching frequency harmonics produced by the inverter, this being passive, and either an L- or LCL-filter. The latter is smaller in size compared to the L-filter. But choosing the optimal values of the LCL-filter is challenging due to resonance, which can affect stability. This paper presents a simple inverter controller design with an L-filter. The control topology is simple and applied easily using traditional control theory...
2017: TheScientificWorldJournal
https://www.readbyqxmd.com/read/28474003/a-qualitative-inquiry-into-nursing-students-experience-of-facilitating-reflection-in-clinical-setting
#3
Shahnaz Karimi, Fariba Haghani, Nikoo Yamani, Majid Najafi Kalyani
Background and Aim. Reflection is known as a skill that is central to nursing students' professional development. Due to the importance and the role of reflection in clinical areas of nursing, it is important to know how to achieve it. However, nursing trainers face the challenge of how to help their students to improve reflection in clinical settings. The aim of this study was to investigate the nursing students' experiences of facilitating reflection during clinical practice. This qualitative study was conducted by qualitative content analysis approach...
2017: TheScientificWorldJournal
https://www.readbyqxmd.com/read/28474002/fem-and-von-mises-analysis-on-prosthetic-crowns-structural-elements-evaluation-of-different-applied-materials
#4
Ennio Bramanti, Gabriele Cervino, Floriana Lauritano, Luca Fiorillo, Cesare D'Amico, Sergio Sambataro, Deborah Denaro, Fausto Famà, Gaetano Ierardo, Antonella Polimeni, Marco Cicciù
The aim of this paper is to underline the mechanical properties of dental single crown prosthodontics materials in order to differentiate the possibility of using each material for typical clinical condition and masticatory load. Objective of the investigation is to highlight the stress distribution over different common dental crowns by using computer-aided design software and a three-dimensional virtual model. By using engineering systems of analyses like FEM and Von Mises investigations it has been highlighted the strength over simulated lower first premolar crowns made by chrome cobalt alloy, golden alloy, dental resin, and zirconia...
2017: TheScientificWorldJournal
https://www.readbyqxmd.com/read/28466066/influence-of-initial-moisture-content-on-heat-and-moisture-transfer-in-firefighters-protective-clothing
#5
Dongmei Huang, Song He
This paper presents a model for heat and moisture transfer through firefighters' protective clothing (FPC) during radiation exposure. The model, which accounts for air gaps in the FPC as well as heat transfer through human skin, investigates the effect of different initial moisture contents on the thermal insulation performance of FPC. Temperature, water vapor density, and the volume fraction of liquid water profiles were monitored during the simulation, and the heat quantity absorbed by water evaporation was calculated...
2017: TheScientificWorldJournal
https://www.readbyqxmd.com/read/28466065/electrochemical-and-morphological-investigations-of-ga-addition-to-pt-electrocatalyst-supported-on-carbon
#6
Giordano T Paganoto, Deise M Santos, Tereza C S Evangelista, Marco C C Guimarães, Maria Tereza W D Carneiro, Josimar Ribeiro
This paper is consisted in the synthesis of platinum-based electrocatalysts supported on carbon (Vulcan XC-72) and investigation of the addition of gallium in their physicochemical and electrochemical properties toward ethanol oxidation reaction (EOR). PtGa/C electrocatalysts were prepared through thermal decomposition of polymeric precursor method at a temperature of 350°C. Six different compositions were homemade: Pt50Ga50/C, Pt60Ga40/C, Pt70Ga30/C, Pt80Ga20/C, Pt90Ga10/C, and Pt100/C. These electrocatalysts were electrochemically characterized by cyclic voltammetry (CV), chronoamperometry (CA), chronopotentiometry (CP), and electrochemical impedance spectroscopy (EIS) in the presence and absence of ethanol 1...
2017: TheScientificWorldJournal
https://www.readbyqxmd.com/read/28428976/sem-and-afm-studies-of-two-phase-magnetic-alkali-borosilicate-glasses
#7
N Andreeva, M Tomkovich, A Naberezhnov, B Nacke, A Filimonov, O Alekseeva, P Vanina, V Nizhankovskii
The morphology and composition of four types of two-phase alkali borosilicate glasses with magnetic atoms prepared by inductive melting have been studied. The results of scanning electron microscopy point to uniform distribution of Na, Si, and O atoms in these samples while magnetic iron atoms form ball-shaped agglomerates. The magnetic properties of these agglomerates have been confirmed by magnetic force microscopy. Atomic force microscopy had shown that in these samples two different morphological structures, drop-like and dendrite net, are formed...
2017: TheScientificWorldJournal
https://www.readbyqxmd.com/read/28421207/detection-of-human-papillomavirus-genotypes-and-epstein-barr-virus-in-nasopharyngeal-carcinomas-at-the-korle-bu-teaching-hospital-ghana
#8
Du-Bois Asante, Richard Harry Asmah, Andrew Anthony Adjei, Foster Kyei, David Larbi Simpong, Charles Addoquaye Brown, Richard Kwasi Gyasi
Nasopharyngeal carcinomas (NPC) are endemic in Far East Asia and commonly harbour Epstein-Barr virus (EBV) which is known to serve as a key oncogenic promoter. Human papillomavirus (HPV) is known to contribute to the pathogenesis of NPC. However, in Ghana these two viruses have not been linked to NPC prevalence. This study was designed to determine the HPV genotypes and EBV involved in NPC tissue biopsies. A retrospective study design involving 72 formalin-fixed paraffin-embedded tissue (FFPET) samples of NPC from 2006 to 2012 were retrieved from the Department of Pathology, University of Ghana School of Biomedical and Allied Health Sciences...
2017: TheScientificWorldJournal
https://www.readbyqxmd.com/read/28396881/allelopathic-activity-of-extracts-from-different-brazilian-peanut-arachis-hypogaea-l-cultivars-on-lettuce-lactuca-sativa-and-weed-plants
#9
G S Casimiro, E Mansur, G Pacheco, R Garcia, I C R Leal, N K Simas
Peanut (Arachis hypogaea L.) is the fourth most consumed oleaginous plant in the world, producing seeds with high contents of lipids, proteins, vitamins, and carbohydrates. Biological activities of different extracts of this species have already been evaluated by many researchers, including antioxidant, antitumoral, and antibacterial. In this work, the allelopathic activity of extracts from different Brazilian peanut cultivars against lettuce (Lactuca sativa) and two weed plants (Commelina benghalensis and Ipomoea nil) was studied...
2017: TheScientificWorldJournal
https://www.readbyqxmd.com/read/28393101/assessment-of-medication-use-among-university-students-in-ethiopia
#10
Dessalegn Asmelashe Gelayee, Gashaw Binega
Background. The extent, nature, and determinants of medication use of individuals can be known from drug utilization studies. Objectives. This study intended to determine medication consumption, sharing, storage, and disposal practices of university students in Northwest Ethiopia. Methods. A descriptive cross-sectional study was conducted on 404 university students selected through stratified random sampling technique. Data were collected using self-administered questionnaire and analyzed with SPSS version 20 statistical software...
2017: TheScientificWorldJournal
https://www.readbyqxmd.com/read/28386582/preliminary-phytochemical-screening-quantitative-analysis-of-alkaloids-and-antioxidant-activity-of-crude-plant-extracts-from-ephedra-intermedia-indigenous-to-balochistan
#11
Rahman Gul, Syed Umer Jan, Syed Faridullah, Samiullah Sherani, Nusrat Jahan
The aim of this study was to evaluate the antioxidant activity, screening the phytogenic chemical compounds, and to assess the alkaloids present in the E. intermedia to prove its uses in Pakistani folk medicines for the treatment of asthma and bronchitis. Antioxidant activity was analyzed by using 2,2-diphenyl-1-picryl-hydrazyl-hydrate assay. Standard methods were used for the identification of cardiac glycosides, phenolic compounds, flavonoids, anthraquinones, and alkaloids. High performance liquid chromatography (HPLC) was used for quantitative purpose of ephedrine alkaloids in E...
2017: TheScientificWorldJournal
https://www.readbyqxmd.com/read/28367492/analgesic-anti-inflammatory-and-antioxidant-activities-of-byrsonima-duckeana-w-r-anderson-malpighiaceae
#12
Maria Christina Dos Santos Verdam, Fernanda Guilhon-Simplicio, Kleyton Cardoso de Andrade, Karina Lorena Meira Fernandes, Tallita Marques Machado, Felipe Moura Araújo da Silva, Mayane Pereira de Souza, Hector Henrique Ferreira Koolen, Cristiane da Silva Paula, Beatriz Cristina Konopatzki Hirota, Vinícius Bednarczuk de Oliveira, Cristina Mayumi Sasaki Miyazaki, Milena Kalegari, Marilis Dallarmi Miguel, Patricia Maria Stuelp-Campelo, Obdulio Gomes Miguel
Background. Byrsonima is a promising neotropical genus, rich in flavonoids and triterpenes, with several proven pharmacological properties. Nevertheless, Byrsonima duckeana W. R. Anderson is an Amazonian species almost not studied. Objective. To assess the antioxidant, anti-inflammatory, and analgesic activities of Byrsonima duckeana leaves. Materials and Methods. We analyzed an ethanol extract and its fractions for polyphenol content and UHPLC-MS/MS, phosphomolybdenum, DPPH, TBARS antioxidant tests, formalin-induced pain, carrageenan-induced peritonitis, acetic acid-induced abdominal writhings, and hot plate assays...
2017: TheScientificWorldJournal
https://www.readbyqxmd.com/read/28367491/alpha-amylase-inhibition-and-antioxidative-capacity-of-some-antidiabetic-plants-used-by-the-traditional-healers-in-southeastern-nigeria
#13
Sunday O Oyedemi, Blessing O Oyedemi, Ifeoma I Ijeh, Princemartins E Ohanyerem, Roger M Coopoosamy, Olayinka A Aiyegoro
Oxidative stress plays a significant role in the pathogenesis of metabolic syndrome including diabetes mellitus (DM). The inhibition of alpha-amylase is an important therapeutic target in the regulation of postprandial increase of blood glucose in diabetic patients. The present study investigated the alpha-amylase inhibitory and antioxidant potential of selected herbal drugs used in the treatment of DM by the traditional healers in Isiala Mbano and Ikwuano regions of southeastern Nigeria. Antioxidant activity was evaluated in terms of free radical scavenging, reducing power, and total phenolic (TPC) and flavonoid content (TFC) in consonance with the TLC profiling...
2017: TheScientificWorldJournal
https://www.readbyqxmd.com/read/28337477/heating-has-no-effect-on-the-net-protein-utilisation-from-egg-whites-in-rats
#14
Ryosuke Matsuoka, Yayoi Takahashi, Mamoru Kimura, Yasunobu Masuda, Masaaki Kunou
Egg whites (EW) are a good source of protein; however, they are typically heated prior to consumption. Therefore, we investigated the effects of different heating conditions on the protein utilisation rate of EW. Male Sprague-Dawley rats (n = 36, 198 ± 1 g) were divided into six groups and fed American Institute of Nutrition-76 chow containing unheated EW, soft-boiled EW, boiled EW, milk whey protein, soybean protein, or no protein over a 10-day period using pair-feeding. Urine and faeces were sampled daily beginning on day 5 to measure nitrogen content and the net protein utilisation (NPU) rate...
2017: TheScientificWorldJournal
https://www.readbyqxmd.com/read/28326431/effects-of-a-supraseasonal-drought-on-the-ecological-attributes-of-plagioscion-squamosissimus-heckel-1840-pisces-sciaenidae-in-a-brazilian-reservoir
#15
Antonia E F Souza, Jônnata F Oliveira, Danielle Peretti, Rodrigo Fernandes, Rodrigo S Costa, José Luis Costa Novaes
The aim of this study was to evaluate the effect of a supraseasonal drought on the ecological attributes of Plagioscion squamosissimus. The fish were caught quarterly from February 2010 to November 2014 using gill nets in the reservoir of Santa Cruz, Rio Grande do Norte, Brazil. The abundance of the species was evaluated with the catch per unit effort (CPUE) metric and then correlated with the accumulated rainfall and water volume of the reservoir. The diet of the fish was evaluated using the feeding index (IAi)...
2017: TheScientificWorldJournal
https://www.readbyqxmd.com/read/28317010/statistical-downscaling-for-rainfall-forecasts-using-modified-constructed-analog-method-in-thailand
#16
Patchalai Anuchaivong, Dusadee Sukawat, Anirut Luadsong
The simulations of rainfall from historical data were created in this study by using statistical downscaling. Statistical downscaling techniques are based on a relationship between the variables that are solved by the General Circulation Models (GCMs) and the observed predictions. The Modified Constructed Analog Method (MCAM) is a technique in downscaling estimation, suitable for rainfall simulation accuracy using weather forecasting. In this research, the MCAM was used to calculate the Euclidean distance to obtain the number of analog days...
2017: TheScientificWorldJournal
https://www.readbyqxmd.com/read/28299349/gabapentin-inhibits-protein-kinase-c-epsilon-translocation-in-cultured-sensory-neurons-with-additive-effects-when-coapplied-with-paracetamol-acetaminophen
#17
Vittorio Vellani, Chiara Giacomoni
Gabapentin is a well-established anticonvulsant drug which is also effective for the treatment of neuropathic pain. Although the exact mechanism leading to relief of allodynia and hyperalgesia caused by neuropathy is not known, the blocking effect of gabapentin on voltage-dependent calcium channels has been proposed to be involved. In order to further evaluate its analgesic mechanisms, we tested the efficacy of gabapentin on protein kinase C epsilon (PKCε) translocation in cultured peripheral neurons isolated from rat dorsal root ganglia (DRGs)...
2017: TheScientificWorldJournal
https://www.readbyqxmd.com/read/28280769/development-and-reliability-of-the-basic-skill-assessment-tool-for-adolescents-with-autism-spectrum-disorder
#18
Maethisa Pongsaksri, Suchitporn Lersilp, Sumana Suchart
The purpose of this study was to improve upon the first version of the basic work skills assessment tool for adolescents with autism spectrum disorder (ASD) and examine interrater and intrarater reliability using Intraclass Correlation Coefficient (ICC). The modified tool includes 2 components: (1) three tasks measuring work abilities and work attitudes and (2) a form to record the number of verbal and nonverbal prompts. 26 participants were selected by purposive sampling and divided into 3 groups-group 1 (10 subjects, aged 11-13 years), group 2 (10, aged 14-16 years), and group 3 (6, aged 17-19 years)...
2017: TheScientificWorldJournal
https://www.readbyqxmd.com/read/28265588/new-records-of-hyphoderma-meruliaceae-polyporales-for-india
#19
Sanjeev Kumar Sanyal, Ritu Devi, Gurpaul Singh Dhingra
An account of eight species of genus Hyphoderma (H. clavatum, H. definitum, H. echinocystis, H. litschaueri, H. nemorale, H. subpraetermissum, H. tibia, and H. transiens) is presented, which is based on collections made from Uttarakhand state during 2009-2014. All these species are cited and fully described for the first time from India.
2017: TheScientificWorldJournal
https://www.readbyqxmd.com/read/28255577/effect-of-harvesting-stage-on-sweet-sorghum-sorghum-bicolor-l-genotypes-in-western-kenya
#20
Moses Owuor Oyier, James O Owuoche, Maurice E Oyoo, Erick Cheruiyot, Betty Mulianga, Justice Rono
Harvesting stage of sweet sorghum (Sorghum bicolor L. Moench) cane is an important aspect in the content of sugar for production of industrial alcohol. Four sweet sorghum genotypes were evaluated for harvesting stage in a randomized complete block design. In order to determine sorghum harvest growth stage for bioethanol production, sorghum canes were harvested at intervals of seven days after anthesis. The genotypes were evaluated at different stages of development for maximum production of bioethanol from flowering to physiological maturity...
2017: TheScientificWorldJournal
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