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https://www.readbyqxmd.com/read/29223114/regional-conduction-velocity-calculation-from-clinical-multichannel-electrograms-in-human-atria
#1
Bhawna Verma, Tobias Oesterlein, Axel Loewe, Armin Luik, Claus Schmitt, Olaf Dössel
BACKGROUND: During atrial fibrillation, heterogeneities and anisotropies result in a chaotic propagation of the depolarization wavefront. The electrophysiological parameter called conduction velocity (CV) influences the propagation pattern over the atrium. We present a method that determines the regional CV for deformed catheter shapes, which result due to the catheter movement and changing wall contact. METHODS: The algorithm selects stable catheter positions, finds the local activation times (LAT), considers the wall contact and calculates all CV estimates within the area covered by the catheter...
November 26, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29222737/differences-by-sexual-orientation-in-perceptions-of-neighborhood-cohesion-implications-for-health
#2
Carrie Henning-Smith, Gilbert Gonzales
A large body of research documents the relationship between health and place, including the positive association between neighborhood cohesion and health. However, very little research has examined neighborhood cohesion by sexual orientation. This paper addresses that gap by examining differences in perceived neighborhood cohesion by sexual orientation. We use data from the 2016 National Health Interview Survey (n = 28,164 respondents aged 18 years and older) to examine bivariate differences by sexual orientation in four measures of neighborhood cohesion...
December 8, 2017: Journal of Community Health
https://www.readbyqxmd.com/read/29222728/fetal-electrocardiogram-extraction-and-analysis-using-adaptive-noise-cancellation-and-wavelet-transformation-techniques
#3
P Sutha, V E Jayanthi
Birth defect-related demise is mainly due to congenital heart defects. In the earlier stage of pregnancy, fetus problem can be identified by finding information about the fetus to avoid stillbirths. The gold standard used to monitor the health status of the fetus is by Cardiotachography(CTG), cannot be used for long durations and continuous monitoring. There is a need for continuous and long duration monitoring of fetal ECG signals to study the progressive health status of the fetus using portable devices. The non-invasive method of electrocardiogram recording is one of the best method used to diagnose fetal cardiac problem rather than the invasive methods...
December 8, 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/29222630/-there-s-so-much-to-it-the-ways-physiotherapy-students-and-recent-graduates-experience-practice
#4
S Barradell, T Peseta, S Barrie
Health science courses aim to prepare students for the demands of their chosen profession by learning ways appropriate to that profession and the contexts they will work and live in. Expectations of what students should learn become re-contextualised and translated into entry-level curriculum, with students operating as a connection between what is intended and enacted in curriculum, and required in the real world. Drawing on phenomenology, this paper explores how students understand practice-the collective, purposeful knowing, doing and being of a community-in entry-level physiotherapy programs...
December 8, 2017: Advances in Health Sciences Education: Theory and Practice
https://www.readbyqxmd.com/read/29222459/uncovering-heterogeneous-interactions-in-online-commercial-networks
#5
Fangfeng Zhang, An Zeng, Bowen Ma, Ying Fan, Zengru Di
With the rapid development of Internet, the research on online commercial networks has become crucial for filtering out irrelevant information for users and predicting their future interest. The common methods for understanding such typical user-item networks are mainly projecting them to unipartite ones with only positive ratings, which may result in losing a large amount of information. In this paper, we propose a novel approach to construct a signed unipartite network with heterogeneous interactions (i.e...
December 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29222091/waste-management-informal-recycling-environmental-pollution-and-public-health
#6
Hong Yang, Mingguo Ma, Julian R Thompson, Roger J Flower
With rapid population growth, especially in low-income and middle-income countries, the generation of waste is increasing at an unprecedented rate. For example, annual global waste arising from waste electrical and electronic equipment alone will have increased from 33.8 to 49.8 million tonnes between 2010 and 2018. Despite incineration and other waste treatment techniques, landfill still dominates waste disposal in low-income and middle-income countries. There is usually insufficient funding for adequate waste management in these countries and uptake of more advanced waste treatment technologies is poor...
December 8, 2017: Journal of Epidemiology and Community Health
https://www.readbyqxmd.com/read/29222019/a-novel-use-of-cellulose-based-filter-paper-containing-silver-nanoparticles-for-its-potential-application-as-wound-dressing-agent
#7
Adnan Haider, Sajjad Haider, Inn-Kyu Kang, Anuj Kumar, Madhusudana Rao Kummara, Tahseen Kamal, Sung Soo Han
The frequent use of antibiotics against microbial infections may lead the emergence of antibiotic resistant microbial strains. To overcome these microbial strains, we need to fabricate alternative materials which can handle them. It is for this reason, we have fabricated cellulose (CE) based filter paper (FP) composite scaffolds comprising of adsorbed chitosan (CS) and sliver (Ag) nanoparticles (NPs). The AgNPs are incorporated in the CS layer of the composite scaffold. Prior to evaluate the efficacy of the scaffolds against gram positive and gram negative bacterial strains, the scaffolds were characterized for the presence of the Ag NPs with field emission scanning electron microscope (FE-SEM), fourier transform infrared (FTIR) spectroscopy and x-ray diffractometer (XRD)...
December 5, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29221607/leader-follower-formation-control-of-underactuated-surface-vehicles-based-on-sliding-mode-control-and-parameter-estimation
#8
Zhijian Sun, Guoqing Zhang, Yu Lu, Weidong Zhang
This paper studies the leader-follower formation control of underactuated surface vehicles with model uncertainties and environmental disturbances. A parameter estimation and upper bound estimation based sliding mode control scheme is proposed to solve the problem of the unknown plant parameters and environmental disturbances. For each of these leader-follower formation systems, the dynamic equations of position and attitude are analyzed using coordinate transformation with the aid of the backstepping technique...
December 5, 2017: ISA Transactions
https://www.readbyqxmd.com/read/29221498/influence-of-community-based-education-on-undergraduate-health-professions-students-decision-to-work-in-underserved-areas-in-uganda
#9
Samuel Kizito, Rhona Baingana, Kintu Mugagga, Peter Akera, Nelson K Sewankambo
BACKGROUND: Uganda is beset by a shortage of health workers and the few available are mal-distributed. Providing rural exposure through community-based education could positively influence students' perspectives towards work in rural areas. We aimed to assess the impact of Community-Based Education and Research (COBERS) on health professions students' attitudes towards working in rural areas. This was a before-and-after study among 525 students of 4 medical universities in Uganda. Data was collected using self-administered paper-based questionnaires...
December 8, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/29221420/influence-of-solvent-polarization-and-non-uniform-ion-size-on-electrostatic-properties-between-charged-surfaces-in-an-electrolyte-solution
#10
Jun-Sik Sin
In this paper, we study electrostatic properties between two similar or oppositely charged surfaces immersed in an electrolyte solution by using the mean-field approach accounting for solvent polarization and non-uniform size effects. Applying a free energy formalism accounting for unequal ion sizes and orientational ordering of water dipoles, we derive coupled and self-consistent equations to calculate electrostatic properties between charged surfaces. Electrostatic properties for similarly charged surfaces depend on the counterion size but not on the coion size...
December 7, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29221071/ultrafast-layer-based-computer-generated-hologram-calculation-with-sparse-template-holographic-fringe-pattern-for-3-d-object
#11
Hak Gu Kim, Yong Man Ro
In this paper, we propose a new ultrafast layer based CGH calculation that exploits the sparsity of hologram fringe pattern in 3-D object layer. Specifically, we devise a sparse template holographic fringe pattern. The holographic fringe pattern on a depth layer can be rapidly calculated by adding the sparse template holographic fringe patterns at each object point position. Since the size of sparse template holographic fringe pattern is much smaller than that of the CGH plane, the computational load can be significantly reduced...
November 27, 2017: Optics Express
https://www.readbyqxmd.com/read/29220872/new-hydrazide-hydrazones-of-isonicotinic-acid-synthesis-lipophilicity-and-in-vitro-antimicrobial-screening
#12
Łukasz Popiołek, Anna Biernasiuk, Anna Berecka, Anna Gumieniczek, Anna Malm, Monika Wujec
This paper describes the synthesis, lipophilicity and in vitro antimicrobial assays of 15 new hydrazide-hydrazones of isonicotinic acid. New derivatives were obtained on the basis of the condensation reaction of isonicotinic acid hydrazide with different aromatic aldehydes. The chemical structure of synthesized compounds was confirmed by spectral methods. Experimental lipophilicity of new isonicotinic acid derivatives was determined using reversed-phase thin-layer chromatography. All synthesized compounds were subjected to in vitro antimicrobial assays against reference strains of Gram-positive bacteria, Gram-negative bacteria and fungi belonging to Candida spp...
December 8, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/29220095/digital-image-analysis-of-ki67-in-hot-spots-is-superior-to-both-manual-ki67-and-mitotic-counts-in-breast-cancer
#13
Gustav Stålhammar, Stephanie Robertson, Lena Wedlund, Michael Lippert, Mattias Rantalainen, Jonas Bergh, Johan Hartman
AIMS: During pathological examination of breast tumours, proliferative activity is routinely evaluated by a count of mitoses. Adding immunohistochemical stains of Ki67 provides extra prognostic and predictive information. However, currently used methods for these evaluations suffer from imperfect reproducibility. It is still unclear whether analysis of Ki67 should be performed in hot spots, in the tumour periphery or as an average of the whole tumour section. In this paper, we compare the clinical relevance of mitoses, Ki67 and Phosphohistone H3 in two cohorts of primary breast cancer specimens (total n=294)...
December 8, 2017: Histopathology
https://www.readbyqxmd.com/read/29219000/techniques-for-nothingness-debate-over-the-comparability-of-hypnosis-and-zen-in-early-twentieth-century-japan
#14
Yu-Chuan Wu
This paper explores a debate that took place in Japan in the early twentieth century over the comparability of hypnosis and Zen. The debate was among the first exchanges between psychology and Buddhism in Japan, and it cast doubt on previous assumptions that a clear boundary existed between the two fields. In the debate, we find that contemporaries readily incorporated ideas from psychology and Buddhism to reconstruct the experiences and concepts of hypnosis and Buddhist nothingness. The resulting new theories and techniques of nothingness were fruits of a fairly fluid boundary between the two fields...
December 1, 2017: History of Science; An Annual Review of Literature, Research and Teaching
https://www.readbyqxmd.com/read/29218966/building-compassion-literacy-enabling-care-in-primary-health-care-nursing
#15
Letitia Helen Burridge, Sarah Winch, Margaret Kay, Amanda Henderson
This paper introduces the concept of compassion literacy and discusses its place in nursing within the general practice setting. Compassion literacy is a valuable competency for sustaining the delivery of high quality care. Being compassion literate enables practice nurses to provide compassionate care to their patients and to recognise factors that may constrain this. A compassion literate practice nurse may be more protected from compassion fatigue and its negative consequences. Understanding how to enable self-compassion and how to support the delivery of compassionate care within the primary care team can enhance the care experienced by the patient while improving the positive engagement and satisfaction of the health professionals...
2017: Collegian: Journal of the Royal College of Nursing, Australia
https://www.readbyqxmd.com/read/29218965/moral-courage-in-undergraduate-nursing-students-a-literature-review
#16
Laurie Bickhoff, Peter M Sinclair, Tracy Levett-Jones
Aim: The aim of this review was to explore factors which facilitate or inhibit undergraduate nursing students’ willingness to demonstrate moral courage when confronted by poor patient care. Methods: Included papers were those that met the criteria of being qualitative research that explored undergraduate nursing students’ depictions of situations where moral courage was or was not demonstrated during clinical placements, with a particular focus on situations that impacted or had the potential to impact the quality of patient care...
2017: Collegian: Journal of the Royal College of Nursing, Australia
https://www.readbyqxmd.com/read/29218933/-research-progress-of-bixie
#17
REVIEW
Li-Xiang Dong, Jun Ni
The extract of ginkgo leaves showed positive effects on treatments of many diseases, and has been used clinically worldwide. Considering the fact that flavonoids are the main bioactive components in the extract of ginkgo leaves, it is very important to investigate the flavonoid biosynthesis in ginkgo leaves. In this paper, we first reviewed the research progress of flavonoid biosynthesis in different plants, and introduced the flavonoid biosynthesis related genes discovered in ginkgo. Then, several cases of ginkgo researches using high throughput sequencing technology were described in detail...
September 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29218678/low-dose-ct-for-lung-cancer-screening-opportunities-and-challenges
#18
Hongbing Shen
Lung cancer is among the most frequently diagnosed cancers worldwide and the leading cause of cancer death in both males and females. Screening for lung cancer coupled with earlier intervention has long been studied as an approach to mortality reduction. However, minimal progress was achieved until recently, when lowdose spiral computed tomography (LDCT) screening demonstrated a 20% reduction in mortality from lung cancer in a randomized controlled trial (RCT), the National Lung Screening Trial, from the United States...
December 7, 2017: Frontiers of Medicine
https://www.readbyqxmd.com/read/29218602/correlates-of-serosorting-and-knowledge-of-sexual-partner-s-hiv-status-among-men-who-have-sex-with-men-in-ukraine
#19
Olena Iakunchykova, Viktor Burlaka, Elizabeth J King
Ukraine has among the highest rates of newly diagnosed HIV infections in the WHO European region. Men who have sex with men (MSM) is the least studied group in the context of the HIV epidemics in Ukraine. The present paper aims to estimate the prevalence and correlates of knowledge of sexual partner's HIV status and potentially discordant anal intercourse (failure to serosort) among MSM. Data of the cross-sectional study among 8100 MSM in Ukraine in 2013 were used for this analysis. Less than half of the participants (42...
December 7, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/29218061/a-comparative-study-of-efficacy-and-safety-of-two-eradication-regimens-for-helicobacter-pylori-infection
#20
Carmen Monica Preda, Doina Proca, Irina Sandra, Larisa Elena Fulger, Boroka Claudia Horeanga, Mircea Manuc, Teodora Manuc, Catalin Andrei Dutei, Mihaela Barbu, Letitia Tugui, Adriana-Corina Andrei, Bogdan Ionut Slavulete, Mircea Diculescu
Introduction: Helicobacter pylori infection is one of the most frequent diseases around the world, affecting about half of the world population. The infection is known to be associated with upper gastrointestinal diseases. The aim of this paper is to identify which of the following two first-line therapy options (ECA vs ECM - see abbreviations below) is more efficient and to assess the improvement in the quality of life among these patients. Material and Methods: 96 patients with proven Helicobacter pylori infection were divided in two treatment groups, as follows: 47 patients received a 10-day triple therapy with esomeprazole 80 mg/day, amoxicillin 2000 mg/day and clarithromycin 1000 mg/day (ECA) and the rest of 49 received a 10-day sequential therapy: esomeprazole 40 mg and amoxicillin 1000 mg twice daily for five days, followed by esomeprazole 40 mg, clarithromycin 500 mg and metronidazole 500 mg (ECM) twice daily for another five days...
September 2017: Mædica
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