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https://www.readbyqxmd.com/read/28634596/study-on-drive-system-of-hybrid-tree-harvester
#1
Shen Rong-Feng, Zhang Xiaozhen, Zhou Chengjun
Hybrid tree harvester with a 60 kW diesel engine combined with a battery pile could be a "green" forest harvesting and transportation system. With the new design, the diesel engine maintains a constant engine speed, keeping fuel consumption low while charging the batteries that drive the forwarder. As an additional energy saving method, the electric motors work as generators to charge the battery pile when the vehicle moves downhill. The vehicle is equipped with six large wheels providing high clearance over uneven terrain while reducing ground pressure...
2017: TheScientificWorldJournal
https://www.readbyqxmd.com/read/28614263/misdiagnosed-anomalous-left-coronary-artery-from-the-pulmonary-artery-as-endocardial-fibroelastosis-in-infancy-a-case-series
#2
Fan Ma, Kaiyu Zhou, Xiaoqing Shi, Xiaoqing Wang, Yi Zhang, Yifei Li, Yimin Hua, Chuan Wang
INTRODUCTION: Anomalous left coronary artery from the pulmonary artery (ALCAPA) is a rare but severe congenital cardiac malformation. The prognosis mainly depends on the early and accurate diagnosis and treatment. However, without a typical and specific clinical manifestation in early stage, ALCAPA has a higher rate of false initial diagnosis. DIAGNOSTIC AND THERAPEUTIC PROCEDURE: Three infants with impaired left ventricle (LV) function, LV enlargement, mitral valve regurgitation (MR), and LV endocardium thickness were initially diagnosed as endocardial fibroelastosis (EFE)...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28611879/pitfalls-in-electrocardiographic-diagnosis-of-acute-coronary-syndrome-in-low-risk-chest-pain
#3
REVIEW
Semhar Z Tewelde, Amal Mattu, William J Brady
Less than half of patients with a chest pain history indicative of acute coronary syndrome have a diagnostic electrocardiogram (ECG) on initial presentation to the emergency department. The physician must dissect the ECG for elusive, but perilous, characteristics that are often missed by machine analysis. ST depression is interpreted and often suggestive of ischemia; however, when exclusive to leads V1-V3 with concomitant tall R waves and upright T waves, a posterior infarction should first and foremost be suspected...
June 2017: Western Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28607615/diffuse-interstitial-fibrosis-assessed-by-cardiac-magnetic-resonance-is-associated-with-dispersion-of-ventricular-repolarization-in-patients-with-hypertrophic-cardiomyopathy
#4
David Hurtado-de-Mendoza, Celia P Corona-Villalobos, Iraklis Pozios, Jorge Gonzales, Yalda Soleimanifard, Sanjay Sivalokanathan, Diego Montoya-Cerrillo, Styliani Vakrou, Ihab Kamel, Wilfredo Mormontoy-Laurel, Ketty Dolores-Cerna, Jacsel Suarez, Sergio Perez-Melo, David A Bluemke, Theodore P Abraham, Stefan L Zimmerman, M Roselle Abraham
BACKGROUND: Hypertrophic cardiomyopathy (HCM) is characterized by myocyte hypertrophy, disarray, fibrosis, and increased risk for ventricular arrhythmias. Increased QT dispersion has been reported in patients with HCM, but the underlying mechanisms have not been completely elucidated. In this study, we examined the relationship between diffuse interstitial fibrosis, replacement fibrosis, QTc dispersion and ventricular arrhythmias in patients with HCM. We hypothesized that fibrosis would slow impulse propagation and increase dispersion of ventricular repolarization, resulting in increased QTc dispersion on surface electrocardiogram (ECG) and ventricular arrhythmias...
June 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/28576263/numerical-analysis-of-ammonia-homogenization-for-selective-catalytic-reduction-application
#5
Jakov Baleta, Matija Martinjak, Milan Vujanović, Klaus Pachler, Jin Wang, Neven Duić
Selective catalytic reduction based on urea water solution as ammonia precursor is a promising method for the NOx abatement form exhaust gasses of mobile diesel engine units. It consists of injecting the urea-water solution in the hot flue gas stream and reaction of its products with the NOx over the catalyst surface. During this process flue gas enthalpy is used for the urea-water droplet heating and for the evaporation of water content. After water evaporates, thermolysis of urea occurs, during which ammonia, a known NOx reductant, and isocyanic acid are generated...
May 30, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28545282/-electrocardiogram-characteristics-of-patients-with-ventricular-arrhythmia-originating-from-the-distal-great-cardiac-vein
#6
R L Zheng, D P Zhou, J X Lin, Y C Li, J Li, J Li, R P Yin, J F Lin
Objective: To explore the electrocardiographic characteristics of patients with idiopathic ventricular arrhythmias (VAs) originating from different portions of distal great cardiac veins (DGCV). Methods: The study included 49 patients underwent successful RFCA of premature ventricular complex(PVCs)/ventricular tachycardia(VT) from different portions of the DGCV in our department from July 2009 to March 2016. The surface 12-lead electrocardiogram (ECG) and intraventricular ablation mapping features were analyzed...
April 24, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/28482065/use-of-bacillus-subtilis-pb6-as-a-potential-antibiotic-growth-promoter-replacement-in-improving-performance-of-broiler-birds
#7
Sathishkumar Jayaraman, Partha Pratim Das, Prakash Chandra Saini, Barun Roy, Paresh Nath Chatterjee
The intestinal gut health is one of the primary determinants of broiler growth and performance. Among the various enteric diseases, necrotic enteritis (NE) is an enterotoxemic disease caused by Clostridium perfringens, which can result in severe economic losses in poultry farming. Antibiotics like bacitracin methylene disalicylate (BMD) and avilamycin (AVL) are commonly used antibiotic growth promoters (AGP) in poultry feed to control necrotic enteritis in birds. Bacillus subtilis PB6 was reported to prevent necrotic enteritis and improve performance in birds...
May 6, 2017: Poultry Science
https://www.readbyqxmd.com/read/28452316/predictive-value-of-qt-dispersion-and-isolated-t-wave-inversion-in-lead-avl-for-early-detection-of-left-anterior-descending-coronary-artery-lesions
#8
Ramadan Ghaleb, Hossam Mansour
No abstract text is available yet for this article.
March 2017: Atherosclerosis. Supplements
https://www.readbyqxmd.com/read/28436566/atrial-fibrillation-originating-from-superior-vena-cava-with-atrial-flutter-electrocardiogram-pattern
#9
Hung-Kai Huang, Shih-Lin Chang, Yenn-Jiang Lin, Li-Wei Lo, Yu-Feng Hu, Fa-Po Chung, Yen-Chang Huang, Chung-Hsing Lin, Chao-Shun Chan, Hung-Yu Chang, Chin-Yu Lin, Yao-Ting Chang, Ching-Hui Huang, Shih-Ann Chen
BACKGROUNDS: Substrate property is related to the genesis and maintenance of atrial fibrillation (AF). The aim of the study was to investigate the impact of substrate property on the electrocardiogram (ECG) in patients with AF originating from the superior vena cava (SVC). METHODS AND RESULTS: Seventy-six patients with AF originating from SVC underwent catheter ablation were included from 2004 to 2013. Of these patients, 16 had a presentation of atrial flutter (AFL)-pattern ECG during AF (group 1), and 60 patients did not (group 2)...
April 24, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28430947/electrocardiographic-left-ventricular-hypertrophy-predicts-cardiovascular-morbidity-and-mortality-in-hypertensive-patients-the-allhat-study
#10
Casper N Bang, Elsayed Z Soliman, Lara M Simpson, Barry R Davis, Richard B Devereux, Peter M Okin
BACKGROUND: Electrocardiographic (ECG) left ventricular hypertrophy (LVH) is a strong predictor of cardiovascular (CV) morbidity and mortality. However, the predictive value of ECG LVH in treated hypertensive patients remains unclear. METHODS: A total of 33,357 patients (aged ≥ 55 years) with hypertension and at least 1 other coronary heart disease (CHD) risk factor were randomized to chlorthalidone, amlodipine, or lisinopril. The outcome of the present study was all-cause mortality; and secondary endpoints were CHD, nonfatal myocardial infarction (MI), stroke, angina, heart failure (HF), and peripheral arterial disease...
April 19, 2017: American Journal of Hypertension
https://www.readbyqxmd.com/read/28423167/what-pre-columbian-mummies-could-teach-us-about-south-american-leishmaniases
#11
REVIEW
Denis Sereno, Mohammad Akhoundi, Franck Dorkeld, Bruno Oury, Hooman Momen, Pascale Perrin
A recent report on the taxonomic profile of the human gut microbiome in pre-Columbian mummies (Santiago-Rodriguez et al. 2016) gives for the first time evidence of the presence of Leishmania DNA (sequences similar to Leishmania donovani according to the authors) that can be reminiscent of visceral leishmaniasis during the pre-Columbian era. It is commonly assumed that Leishmania infantum, the etiological agent of American visceral leishmaniasis (AVL) was introduced into the New World by the Iberian conquest...
April 1, 2017: Pathogens and Disease
https://www.readbyqxmd.com/read/28414663/not-another-acs-rule-out
#12
S Preston, R Nelson, M Watts, D Smith, T Dewenter, D Spruill
CASE: A 50 year old African-American woman with diabetes, hypertension, and hyperlipidemia presented with progressively worsening retro-sternal chest pain, exacerbated by activity and relieved by rest. She also endorsed a thirty-pound unintentional weight loss, and dysphagia. She was dysarthric with left-sided Bell's Palsy and a palpable left axillary lymph node. She had been evaluated at several hospitals in the previous months for similar typical chest pain. Her troponin values were normal, and an EKG showed T-wave inversions in leads I and aVL...
March 2017: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/28400921/validity-of-electrocardiographic-criteria-for-increased-left-ventricular-mass-in-young-patients-in-the-general-population
#13
Eduard Sklyar, Paul Ginelli, Aaron Barton, Richard Peralta, Jonathan N Bella
AIM: To investigate validity of electrocardiographic (ECG) criteria for left ventricular hypertrophy (LVH) in young adults. METHODS: Retrospectively, echocardiograms showing LVH and concomitant electrocardiograms were collected in patients 18 to 39 years old. A control group of patients without LVH was collected. Using echocardiogram as the gold standard, electrocardiograms were analyzed using common voltage criteria. RESULTS: Study included 100 subjects (52% male, mean age = 28 ± 6...
March 26, 2017: World Journal of Cardiology
https://www.readbyqxmd.com/read/28344026/the-impact-of-various-scaffold-components-on-vascularized-bone-constructs
#14
Ahmad Eweida, Matthias Schulte, Oliver Frisch, Ulrich Kneser, Leila Harhaus
Bone tissue engineering is gaining more interest in the field of craniofacial surgery where continuous efforts are being made to improve the outcomes via modulation of the scaffold components. In an in vitro three dimensional (3D) culture, the effect of bone morphogenic protein 2 (BMP2, 60 μg/ml) and the effect of different cell seeding densities (0.25, 0.5, and 1 × 104) of rat mesenchymal stem cells seeded on nanocrystalline hydroxyapatite in silica gel matrix (Nanobone(®)) on the cell viability and differentiation were studied...
February 24, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28343785/pericardial-mesothelioma-presenting-as-a-suspected-st-elevation-myocardial-infarction
#15
Ana Sofia Barroso, Sérgio Leite, Fernando Friões, Mariana Vasconcelos, Daniela Azevedo, Helena Baldaia, Mário Jorge Amorim, Paula Dias
Primary cardiac and pericardial tumors are rare entities with an autopsy frequency of 0.001-0.03%. Metastases to the heart and pericardium are much more common than primary tumors. Malignant pericardial mesotheliomas account for up to 50% of primary pericardial tumors. We report the case of a 75-year-old woman with hypertension, dyslipidemia and atrial fibrillation who went to the emergency department due to nonspecific thoracic discomfort of over six hours duration associated with syncope. Physical examination revealed a low-amplitude arrhythmic pulse, no heart murmurs and no signs of pulmonary congestion...
April 2017: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
https://www.readbyqxmd.com/read/28328081/btk-inhibition-is-a-potent-approach-to-block-ige-mediated-histamine-release-in-human-basophils
#16
D Smiljkovic, K Blatt, G Stefanzl, Y Dorofeeva, C Skrabs, M Focke-Tejkl, W R Sperr, U Jaeger, R Valenta, P Valent
BACKGROUND: Recent data suggest that Bruton's tyrosine kinase (BTK) is an emerging therapeutic target in IgE receptor (IgER)-cross-linked basophils. METHODS: We examined the effects of four BTK inhibitors (ibrutinib, dasatinib, AVL-292, and CNX-774) on IgE-dependent activation and histamine release in blood basophils obtained from allergic patients (n=11) and nonallergic donors (n=5). In addition, we examined the effects of these drugs on the growth of the human basophil cell line KU812 and the human mast cell line HMC-1...
March 22, 2017: Allergy
https://www.readbyqxmd.com/read/28315838/germline-proliferation-is-regulated-by-somatic-endocytic-genes-via-jnk-and-bmp-signaling-in-drosophila
#17
Yaning Tang, Qing Geng, Di Chen, Shaowei Zhao, Xian Liu, Zhaohui Wang
Signals derived from the microenvironment contribute greatly to tumorigenesis . The underlying mechanism requires thorough investigation. Here, we use Drosophila testis as a model system to address this question, taking the advantage of the ease to distinguish germline and somatic cells and to track the cell numbers. In an EMS mutagenesis screen, we identified Rab5, a key factor in endocytosis, for its nonautonomous role in germline proliferation. The disruption of Rab5 in somatic cyst cells, which escort the development of germline lineage, induced the overproliferation of underdifferentiated but genetically wild-type germ cells...
May 2017: Genetics
https://www.readbyqxmd.com/read/28314845/distribution-and-prognostic-significance-of-fragmented-qrs-in-patients-with-brugada-syndrome
#18
Hiroshi Morita, Atsuyuki Watanabe, Yoshimasa Morimoto, Satoshi Kawada, Motomi Tachibana, Koji Nakagawa, Nobuhiro Nishii, Hiroshi Ito
BACKGROUND: Fragmented QRS complexes (fQRS) in the right precordial leads are associated with occurrence of ventricular fibrillation (VF) in Brugada syndrome. Recently, epicardial mapping has revealed abnormal electrograms at the right ventricular (RV) outflow tract and inferior region of the right ventricle. fQRS may reflect the extent of the area of abnormal potentials, but whether the distribution of fQRS has prognostic value is not known. METHODS AND RESULTS: We evaluated the existence of fQRS in 456 patients with Brugada syndrome, including 117 patients with syncope and 23 patients with VF...
March 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/28285712/the-value-of-reciprocal-electrocardiographic-leads
#19
Mazen M Kawji, David L Glancy
In a woman with chest pain, <0.1 mV ST-segment elevation in lead III, and virtually no ST elevation in leads II and aVF, striking ST-segment depression in lead aVL, the reciprocal lead to lead III, confirmed the diagnosis of acute inferior myocardial infarction.
May 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28244206/surface-ecg-and-fluoroscopy-are-not-predictive-of-right-ventricular-septal-lead-position-compared-to-cardiac-ct
#20
Matthew K Rowe, Peter Moore, Jit Pratap, John Coucher, Paul A Gould, Gerald C Kaye
BACKGROUND: Controversy exists regarding the optimal lead position for chronic right ventricular (RV) pacing. Placing a lead at the RV septum relies upon fluoroscopy assisted by a surface 12-lead electrocardiogram (ECG). We compared the postimplant lead position determined by ECG-gated multidetector contrast-enhanced computed tomography (MDCT) with the position derived from the surface 12-lead ECG. METHODS: Eighteen patients with permanent RV leads were prospectively enrolled...
May 2017: Pacing and Clinical Electrophysiology: PACE
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