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https://www.readbyqxmd.com/read/28643832/metasurface-integrated-high-energy-efficient-and-high-linearly-polarized-ingan-gan-light-emitting-diode
#1
Miao Wang, Fuyang Xu, Yu Lin, Bing Cao, Linghua Chen, Chinhua Wang, Jianfeng Wang, Ke Xu
We proposed and demonstrated an integrated high energy efficient and high linearly polarized InGaN/GaN green LED grown on (0001) oriented sapphire with combined metasurface polarizing converter and polarizer system. It is different from those conventional polarized light emissions generated with plasmonic metallic grating in which at least 50% high energy loss occurs inherently due to high reflection of the transverse electric (TE) component of an electric field. A reflecting metasurface, with a two dimensional elliptic metal cylinder array (EMCA) that functions as a half-wave plate, was integrated at the bottom of a LED such that the back-reflected TE component, that is otherwise lost by a dielectric/metal bi-layered wire grids (DMBiWG) polarizer on the top emitting surface of the LED, can be converted to desired transverse magnetic (TM) polarized emission after reflecting from the metasurface...
June 23, 2017: Nanoscale
https://www.readbyqxmd.com/read/28643383/multiecho-pseudo-golden-angle-stack-of-stars-thermometry-with-high-spatial-and-temporal-resolution-using-k-space-weighted-image-contrast
#2
Bryant T Svedin, Allison Payne, Bradley D Bolster, Dennis L Parker
PURPOSE: Implement and evaluate a 3D MRI method to measure temperature changes with high spatial and temporal resolution and large field of view. METHODS: A multiecho pseudo-golden angle stack-of-stars (SOS) sequence with k-space weighted image contrast (KWIC) reconstruction was implemented to simultaneously measure multiple quantities, including temperature, initial signal magnitude M(0), transverse relaxation time ( T2*), and water/fat images. Respiration artifacts were corrected using self-navigation...
June 22, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28641287/chrysophanol-suppressed-glutamate-induced-hippocampal-neuronal-cell-death-via-regulation-of-dynamin-related-protein-1-dependent-mitochondrial-fission
#3
Unbin Chae, Ju-Sik Min, Hyun Hee Leem, Hyun-Shik Lee, Hong Jun Lee, Sang-Rae Lee, Dong-Seok Lee
Chrysophanic acid, or chrysophanol, is an anthraquinone found in Rheum palmatum, which was used in the preparation of oriental medicine in ancient China. The hippocampus plays a major role in controlling the activities of the short- and long-term memory. It is one of the major regions affected by excessive cell death in Alzheimer's disease. Therefore, neuronal cell-death modulation in the hippocampus is important for maintaining neuronal function. We investigated chrysophanol's effects on glutamate-induced hippocampal neuronal cell death...
June 23, 2017: Pharmacology
https://www.readbyqxmd.com/read/28640033/how-attending-physician-preceptors-negotiate-their-complex-work-environment-a-collective-ethnography
#4
Jane B Lemaire, Jean E Wallace, Peter M Sargious, Maria Bacchus, Kelly Zarnke, David R Ward, William A Ghali
PURPOSE: To generate an empiric, detailed, and updated view of the attending physician preceptor role and its interface with the complex work environment. METHOD: In 2013, the authors conducted a modified collective ethnography with observations of internal medicine medical teaching unit preceptors from two university hospitals in Canada. Eleven observers conducted 32 observations (99.5 hours) of 26 preceptors (30 observations [93.5 hours] of 24 preceptors were included in the analysis)...
June 20, 2017: Academic Medicine: Journal of the Association of American Medical Colleges
https://www.readbyqxmd.com/read/28638171/3d-printed-abdominal-aortic-aneurysm-phantom-for-image-guided-surgical-planning-with-a-patient-specific-fenestrated-endovascular-graft-system
#5
Karen M Meess, Richard L Izzo, Maciej L Dryjski, Richard E Curl, Linda M Harris, Michael Springer, Adnan H Siddiqui, Stephen Rudin, Ciprian N Ionita
Following new trends in precision medicine, Juxatarenal Abdominal Aortic Aneurysm (JAAA) treatment has been enabled by using patient-specific fenestrated endovascular grafts. The X-ray guided procedure requires precise orientation of multiple modular endografts within the arteries confirmed via radiopaque markers. Patient-specific 3D printed phantoms could familiarize physicians with complex procedures and new devices in a risk-free simulation environment to avoid periprocedural complications and improve training...
February 11, 2017: Proceedings of SPIE
https://www.readbyqxmd.com/read/28636579/regeneration-orientation-is-better-than-resistance-orientation-in-behaviour-activation-results-from-an-intervention-study-with-psychosomatic-patients
#6
Josephine Otto, Michael Linden
The meaning of positive activities in mental health is widely known and found its entrance in therapeutically and empirical work. It also found it's entrance to current therapeutic developments. Different strategies for assessment and promotion of activity level exist. Patients were acquired from a department of psychosomatic medicine in a German rehabilitation center and randomly allocated to two treatment groups ("regeneration" vs "resistance" group). Data from 62 patients in the regeneration group and 65 patients in the resistance group was compared with 43 patients who received a "treatment as usual"...
June 2017: Psychiatria Danubina
https://www.readbyqxmd.com/read/28636311/insights-into-integrated-lead-generation-and-target-identification-in-malaria-and-tuberculosis-drug-discovery
#7
John Okombo, Kelly Chibale
New, safe and effective drugs are urgently needed to treat and control malaria and tuberculosis, which affect millions of people annually. However, financial return on investment in the poor settings where these diseases are mostly prevalent is very minimal to support market-driven drug discovery and development. Moreover, the imminent loss of therapeutic lifespan of existing therapies due to evolution and spread of drug resistance further compounds the urgency to identify novel effective drugs. However, the advent of new public-private partnerships focused on tropical diseases and the recent release of large data sets by pharmaceutical companies on antimalarial and antituberculosis compounds derived from phenotypic whole cell high throughput screening have spurred renewed interest and opened new frontiers in malaria and tuberculosis drug discovery...
June 21, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28633539/a-survey-on-chemical-constituents-and-indications-of-aromatic-waters-soft-drinks-hydrosols-used-in-persian-nutrition-culture-and-folk-medicine-for-neurological-disorders-and-mental-health
#8
Azadeh Hamedi, Ardalan Pasdaran, Zahra Zebarjad, Mahmoodreza Moein
In Persian nutrition culture, drinking aromatic waters (hydrosols, distillate) has a long history as functional beverages or therapeutic remedies. The co-distilled water with essential oils, which contains partial amounts of more water-soluble volatile compounds are diluted and used as beverages. Since the solubility of volatile components is different in water, the overall composition, and thus the biological activities of aromatic waters seem to be different from the essential oils they were co-distilled with...
January 1, 2017: Journal of Evidence-based Complementary & Alternative Medicine
https://www.readbyqxmd.com/read/28630033/trust-and-credibility-in-web-based-health-information-a-review-and-agenda-for-future-research
#9
Laura Sbaffi, Jennifer Rowley
BACKGROUND: Internet sources are becoming increasingly important in seeking health information, such that they may have a significant effect on health care decisions and outcomes. Hence, given the wide range of different sources of Web-based health information (WHI) from different organizations and individuals, it is important to understand how information seekers evaluate and select the sources that they use, and more specifically, how they assess their credibility and trustworthiness...
June 19, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28629581/impact-of-a-teamstepps-trauma-nurse-academy-at-a-level-1-trauma-center
#10
V Kristen Peters, Ellen M Harvey, Andi Wright, Jennifer Bath, Dan Freeman, Bryan Collier
PROBLEM: Nurses are crucial members of the team caring for the acutely injured trauma patient. Until recently, nurses and physicians gained an understanding of leadership and supportive roles separately. With the advent of a multidisciplinary team approach to trauma care, formal team training and simulation has transpired. METHODS: Since 2007, our Level I trauma system has integrated TeamSTEPPS (Team Strategies & Tools to Enhance Performance & Patient Safety; Agency for Healthcare Research and Quality, Rockville, MD) into our clinical care, joint training of nurses and physicians, using simulations with participation of all health care providers...
June 16, 2017: Journal of Emergency Nursing: JEN: Official Publication of the Emergency Department Nurses Association
https://www.readbyqxmd.com/read/28628860/in-silico-modeling-on-adme-properties-of-natural-products-classification-models-for-blood-brain-barrier-permeability-its-application-to-traditional-chinese-medicine-and-in-vitro-experimental-validation
#11
Xiuqing Zhang, Ting Liu, Xiaohui Fan, Ni Ai
In silico modeling of blood-brain barrier (BBB) permeability plays an important role in early discovery of central nervous system (CNS) drugs due to its high-throughput and cost-effectiveness. Natural products (NP) have demonstrated considerable therapeutic efficacy against several CNS diseases. However, BBB permeation property of NP is scarcely evaluated both experimentally and computationally. It is well accepted that significant difference in chemical spaces exists between NP and synthetic drugs, which calls into doubt on suitability of available synthetic chemical based BBB permeability models for the evaluation of NP...
June 7, 2017: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/28623784/antihypertensive-and-vasodilator-effects-of-methanolic-extract-of-inula-viscosa-biological-evaluation-and-pom-analysis-of-cynarin-chlorogenic-acid-as-potential-hypertensive
#12
Zineb Hakkou, Alexandre Maciuk, Veronique Leblais, Nour Elhouda Bouanani, Hassane Mekhfi, Mohammed Bnouham, Mohammed Aziz, Abderrahime Ziyyat, Abdur Rauf, Taibi Ben Hadda, Usama Shaheen, Seema Patel, Rodolphe Fischmeister, Abdelkhaleq Legssyer
BACKGROUND: Inula viscosa L. (Asteraceae) is a medicinal plant widely used as a folk medicine in oriental Morocco, to treat hypertension. The antihypertensive effect of the methanolic extract obtained from I. viscosa leaves was evaluated in hypertensive L-NAME rats. Systolic blood pressure (SBP) was measured using a non-invasive indirect tail-cuff plethysmographic method. Four groups of rats were used: a control group; a hypertensive group treated with L-NAME (32mg/kg/day); a positive control group treated with L-NAME plus enalapril (15mg/kg/day) as a reference antihypertensive agent; and a group treated with L-NAME plus MeOH-extract (40mg/kg/day)...
June 14, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28621537/electrochemical-deposition-of-conformal-and-functional-layers-on-high-aspect-ratio-silicon-micro-nanowires
#13
Tuncay Ozel, Benjamin A Zhang, Ruixuan Gao, Robert W Day, Charles M Lieber, Daniel G Nocera
Development of new synthetic methods for the modification of nanostructures has accelerated materials design advances to furnish complex architectures. Structures based on one-dimensional (1D) silicon (Si) structures synthesized using top-down and bottom-up methods are especially prominent for diverse applications in chemistry, physics, and medicine. Yet further elaboration of these structures with distinct metal-based and polymeric materials, which could open up new opportunities, has been difficult. We present a general electrochemical method for the deposition of conformal layers of various materials onto high aspect ratio Si micro- and nanowire arrays...
June 23, 2017: Nano Letters
https://www.readbyqxmd.com/read/28619773/herbal-medicine-hyeolbuchukeo-tang-or-xuefu-zhuyu-decoction-for-treating-primary-dysmenorrhoea-protocol-for-a-systematic-review-of-randomised-controlled-trials
#14
Junyoung Jo, Jungtae Leem, Jin Moo Lee, Kyoung Sun Park
INTRODUCTION: Primary dysmenorrhoea is menstrual pain without pelvic pathology and is the most common gynaecological condition in women. Xuefu Zhuyudecoction (XZD) or Hyeolbuchukeo-tang, a traditional herbal formula, has been used as a treatment for primary dysmenorrhoea. The purpose of this study is to assess the current published evidence regarding XZD as treatment for primary dysmenorrhoea. MATERIALS AND METHODS: The following databases will be searched from their inception until April 2017: MEDLINE (via PubMed), Allied and Complementary Medicine Database (AMED), EMBASE, The Cochrane Library, six Korean medical databases (Korean Studies Information Service System, DBPia, Oriental Medicine Advanced Searching Integrated System, Research Information Service System, Korea Med and the Korean Traditional Knowledge Portal), three Chinese medical databases (China National Knowledge Infrastructure (CNKI), Wan Fang Database and Chinese Scientific Journals Database (VIP)) and one Japanese medical database (CiNii)...
June 15, 2017: BMJ Open
https://www.readbyqxmd.com/read/28612293/nowhere-to-run-rabbit-the-cold-war-calculus-of-disease-ecology
#15
Warwick Anderson
During the cold war, Frank Fenner (protégé of Macfarlane Burnet and René Dubos) and Francis Ratcliffe (associate of A. J. Nicholson and student of Charles Elton) studied mathematically the coevolution of host resistance and parasite virulence when myxomatosis was unleashed on Australia's rabbit population. Later, Robert May called Fenner the "real hero" of disease ecology for his mathematical modeling of the epidemic. While Ratcliffe came from a tradition of animal ecology, Fenner developed an ecological orientation in World War II through his work on malaria control (with Ratcliffe and Ian Mackerras, among others)-that is, through studies of tropical medicine...
June 2017: History and Philosophy of the Life Sciences
https://www.readbyqxmd.com/read/28611089/protocol-for-a-randomised-controlled-trial-evaluating-the-effects-of-providing-essential-medicines-at-no-charge-the-carefully-selected-and-easily-accessible-at-no-charge-medicines-clean-meds-trial
#16
Nav Persaud, Taehoon Lee, Haroon Ahmad, Winny Li, Michael Sergio Taglione, Yathavan Rajakulasingam, Norman Umali, Andrew Boozary, Richard H Glazier, Tara Gomes, Stephen W Hwang, Peter Jüni, Michael Law, Muhammad M Mamdani, Braden Manns, Danielle Martin, Steve Morgan, Paul Oh, Andrew David Pinto, Baiju R Shah, Frank M Sullivan, Kevin E Thorpe, Karen Tu, Andreas Laupacis
INTRODUCTION: Cost-related non-adherence to medicines is common in low-income, middle-income and high-income countries such as Canada. Medicine non-adherence is associated with poor health outcomes and increased mortality. This randomised trial will test the impact of a carefully selected list of essential medicines at no charge (compared with usual medicine access) in primary care patients reporting cost-related non-adherence. METHODS AND ANALYSIS: This is an open-label, parallel two-arm, superiority, individually randomised controlled trial conducted in three primary care sites (one urban, two rural) in Ontario, Canada, that was codesigned by a community guidance panel...
June 12, 2017: BMJ Open
https://www.readbyqxmd.com/read/28610755/epistemological-erasure-the-subject-of-abuse-in-the-problematization-of-elder-abuse
#17
Bridget Garnham, Lia Bryant
The academic field of literature pertaining to elder abuse emerges largely from gerontology with contributions from a variety of disciplines including geriatric medicine, nursing, public health, law, psychology, sociology and social work. This paper presents a critical review of articles drawn from this literature to identify current directions leading the development of empirical research in this field. The objective measurement of prevalence, the identification and correlation of psycho-social risk factors and practice-based research oriented to intervention and prevention are identified as privileged sites for scientific investigation...
April 2017: Journal of Aging Studies
https://www.readbyqxmd.com/read/28608954/experience-from-an-optional-dissection-course-in-a-clinically-orientated-concept-to-complement-system-based-anatomy-in-a-reformed-curriculum
#18
Elisabeth Eppler, Steffen Serowy, Karl Link, Luis Filgueira
Profound anatomical knowledge is the basis for modern demands in medicine and surgery, but many countries worldwide including Australia and New Zealand have discontinued offering dissection courses to medical and dental students during the past decades. This educational project done in Australia aimed at enhancing basic and advanced anatomy teaching by engaging a sub-group of second-year undergraduate students of a compulsory prosection- and model-based anatomy course (n = 54/170) in an optional multimodal course, which should easily articulate with a vertical curriculum...
June 13, 2017: Anatomical Sciences Education
https://www.readbyqxmd.com/read/28608849/the-complete-chloroplast-genome-sequences-of-fritillaria-ussuriensis-maxim-and-fritillaria-cirrhosa-d-don-and-comparative-analysis-with-other-fritillaria-species
#19
Inkyu Park, Wook Jin Kim, Sang-Min Yeo, Goya Choi, Young-Min Kang, Renzhe Piao, Byeong Cheol Moon
The genus Fritillaria belongs to the widely distributed Liliaceae. The bulbs of Fritillaria, F. ussuriensis and F. cirrhosa are valuable herbaceous medicinal ingredients. However, they are still used indiscriminately in herbal medicine. Identification and molecular phylogenic analysis of Fritillaria species are therefore required. Here, we report the complete chloroplast (CP) genome sequences of F. ussuriensis and F. cirrhosa. The two Fritillaria CP genomes were 151,524 and 151,083 bp in length, respectively, and each included a pair of inverted repeated regions (52,678 and 52,156 bp) that was separated by a large single copy region (81,732 and 81,390 bp), and a small single copy region (17,114 and 17,537 bp)...
June 13, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28608356/-the-influence-of-spanish-neuropsychiatry-on-the-improbable-medicine-of-ramon-gomez-de-la-serna
#20
REVIEW
G Delgado-Garcia, C Rodriguez-Navarez, T Corona, B Estanol-Vidal
INTRODUCTION: El doctor inverosimil (The Improbable Doctor) is a novel by Ramon Gomez de la Serna (1888-1963) in which the reader follows, by means of a series of different clinical cases, the adventures of Doctor Vivar. AIMS: To present and discuss, for the first time, the influence that Spanish neuropsychiatry had on this novel, taking the following short stories as study models: 'Casos cerebrales' ('Brain Cases') and 'La risita' ('The Giggles'). DEVELOPMENT: In these two tales, the improbable doctor embodies the three defining elements of Spanish neuropsychiatry...
June 16, 2017: Revista de Neurologia
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