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Wenying Liao, Duncan N L Menge
Symbiotic nitrogen (N) fixation is the major N input to many ecosystems. Although temperate forests are commonly N limited, symbiotic N-fixing trees ("N fixers") are rare and decline in abundance as succession proceeds-a challenging paradox that remains unexplained. Understanding demographic processes that underlie N fixers' rarity and successional decline would provide a proximate answer to the paradox. Do N fixers grow slower, die more frequently, or recruit less in temperate forests? We quantified demographic rates of N-fixing and non-fixing trees across succession using U...
2016: PloS One
Paula Bernasconi, Stefan Blumentrath, David N Barton, Graciela M Rusch, Ademar R Romeiro
The recently launched Brazilian "forest certificates" market is expected to reduce environmental compliance costs for landowners through an offset mechanism, after a long history of conservation laws based in command-and-control and strict rules. In this paper we assessed potential costs and evaluated the cost-effectiveness of the instrument when introducing to this market constraints that aim to address conservation objectives more specifically. Using the conservation planning software Marxan with Zones we simulated different scopes for the "forest certificates" market, and compared their cost-effectiveness with that of existing command-and-control (C&C), i...
2016: PloS One
Michael B Cook, Jennifer Drahos, Shannon Wood, Lindsey Enewold, Ruth Parsons, Neal D Freedman, Philip R Taylor, Winnie Ricker, Christian C Abnet
BACKGROUND: The absolute risk of oesophageal adenocarcinoma (EA) among individuals with Barrett's oesophagus (BE) is low and a majority of EA cases are diagnosed among individuals with no prior BE diagnosis. To ensure that insights from EA case-control studies are transferable to clinical management of BE populations, we conducted a case-case study to compare the clinical presentation, medical history and survival of EA cases with and without a prior BE diagnosis in the Surveillance, Epidemiology and End Results Medicare database...
October 25, 2016: British Journal of Cancer
Marek Krawczyk, Michał Grąt, Rene Adam, Wojciech G Polak, Jurgen Klempnauer, Antonio Pinna, Fabrizio Di Benedetto, Franco Filipponi, Norbert Senninger, Aksel Foss, Sebastian Rufián-Peña, William Bennet, Johann Pratschke, Andreas Paul, Utz Settmacher, Giorgio Rossi, Mauro Salizzoni, Carlos Fernandez-Selles, Santiago T Martínez de Rituerto, Miguel A Gómez-Bravo, Jacques Pirenne, Olivier Detry, Pietro E Majno, Petr Nemec, Wolf O Bechstein, Michael Bartels, Silvio Nadalin, Francois R Pruvot, Darius F Mirza, Luigi Lupo, Michele Colledan, Giuseppe Tisone, Jan Ringers, Jorge Daniel, Ramón Charco Torra, Enrique Moreno González, Rafael Bañares Cañizares, Valentin Cuervas-Mons Martinez, Fernando San Juan Rodríguez, Sezai Yilmaz, Piotr Remiszewski
BACKGROUND: Liver transplantation is the most extreme form of surgical management of patients with hepatic trauma, with very limited literature data supporting its use. The aim of this study was to assess the results of liver transplantation for hepatic trauma. METHODS: This retrospective analysis based on European Liver Transplant Registry comprised data of 73 recipients of liver transplantation for hepatic trauma performed in 37 centers in the period between 1987 and 2013...
November 2016: Transplantation
Kyle G Cologne, Sean Byers, David R Rosen, Grace S Hwang, Adrian E Ortega, Glenn T Ault, Sang W Lee
A prospectively maintained database of 415 patients undergoing colectomy was evaluated. We performed a logistic regression analysis to identify factors associated with 1) length of stay (LOS) of 2 days or less and 2) LOS of 10 days or more. Investigated variables included demographics, American Society of Anesthesiology (ASA) score, diagnosis, operative procedure, approach and time, transfusion requirements, and occurrence of any complications. Factors associated with a LOS of two days or less included ASA [odds ratio (OR): 0...
October 2016: American Surgeon
Shu-Fang Chang
PURPOSE: We investigated the relationships among geriatric syndrome, physiological functions, and body composition in community-dwelling older people with varying nutritional statuses. Other factors correlated with nutritional status in community-dwelling older people were also explored. BACKGROUND: The World Health Organization has initiated preventive programs for addressing malnutrition. However, few studies have focused on the correlations among geriatric syndrome, physiological functions, and body composition in older people at risk of malnutrition...
October 25, 2016: Journal of Nursing Scholarship
Trevor P E Williams, Scott Shaw, Adam Porter, Larry Berkwitt
OBJECTIVE: To review information regarding etiology, pathophysiology, and treatment options for aortic thrombotic disease in dogs. ETIOLOGY: Diseases resulting in hypercoagulable states can cause thrombus formation in the distal aorta, and account for the majority of cases of aortic thrombosis (ATh) in dogs, although a substantial number of cases have no identifiable underlying cause. Aortic thromboembolism (ATE) also occurs but appears to be much less frequently documented...
October 25, 2016: Journal of Veterinary Emergency and Critical Care
L Hepburn, D J Hijnen, B R Sellman, T Mustelin, M A Sleeman, R D May, I Strickland
Atopic dermatitis (AD) is a complex, chronic inflammatory skin disorder affecting more than 10% of UK children and is a major cause of occupation-related disability. A subset of patients, particularly those with severe AD, are persistently colonised with Staphylococcus aureus (S. aureus) and exacerbation of disease is commonly associated with this bacterium by virtue of increased inflammation and allergic sensitisation, aggravated by skin barrier defects. Understanding the complex biology of S. aureus is an important factor when developing new drugs to combat infection...
October 25, 2016: British Journal of Dermatology
Shuichi Kaneyama, Masatoshi Sumi, Masato Takabatake, Koichi Kasahara, Aritetsu Kanemura, Hiroaki Hirata, Bruce V Darden
STUDY DESIGN: Clinical case series and risk factor analysis of dysphagia after occipitospinal fusion (OSF). OBJECTIVE: To develop new criteria to avoid postoperative dysphagia by analyzing the relationship among the craniocervical alignment, the oropharyngeal space and the incidence of dysphagia after OSF. SUMMARY OF BACKGROUND DATA: Craniocervical malalignment after OSF is considered to be one of the primary triggers of postoperative dysphagia...
October 24, 2016: Spine
Mariska Stam, Jan H Smit, Jos W R Twisk, Ulrike Lemke, Cas Smits, Joost M Festen, Sophia E Kramer
OBJECTIVES: The aim of this study was to establish the longitudinal relationship between hearing ability in noise and psychosocial health outcomes (i.e., loneliness, anxiety, depression, distress, and somatization) in adults aged 18 to 70 years. An additional objective was to determine whether a change in hearing ability in noise over a period of 5 years was associated with a change in psychosocial functioning. Subgroup effects for a range of factors were investigated. DESIGN: Longitudinal data of the web-based Netherlands Longitudinal Study on Hearing (NL-SH) (N = 508) were analyzed...
November 2016: Ear and Hearing
Chayanon Ngambenjawong, Julio Marco B Pineda, Suzie H Pun
Peptide cyclization is a strategy used to improve stability and/or activity of peptides. The most commonly used cyclization method is disulfide bridge formation of cysteine-containing peptides as typically found in nature. Over the years, an increasing number of alternative chemistries for peptide cyclization with improved efficiency, kinetics, orthogonality, and stability have been reported. However, there has been less appreciation for the opportunity to fine-tune peptide activity via the diverse chemical entities introduced at the site of linkage by different cyclization strategies...
October 25, 2016: Bioconjugate Chemistry
Ting-Ting Cao, Xiu-Li Sun, Shi-Yan Wang, Xin Yang, Jian-Liu Wang
BACKGROUND: Pelvic organ prolapse (POP) is a major health concern that affects women. Surgeons have increasingly used prosthetic meshes to correct POP. However, the most common used is synthetic mesh, and absorbable mesh is less reported. This research aimed to evaluate the clinical effectiveness of porcine small intestinal submucosa (SIS). METHODS: Consecutive forty POP patients who met the inclusion criteria underwent pelvic reconstruction surgery with SIS between March 2012 and December 2013...
2016: Chinese Medical Journal
Shekhar S Chandra, Jason A Dowling, Peter B Greer, Jarad Martin, Chris Wratten, Peter Pichler, Jurgen Fripp, Stuart Crozier
Active shape models (ASMs) have proved successful in automatic segmentation by using shape and appearance priors in a number of areas such as prostate segmentation, where accurate contouring is important in treatment planning for prostate cancer. The ASM approach however, is heavily reliant on a good initialisation for achieving high segmentation quality. This initialisation often requires algorithms with high computational complexity, such as three dimensional (3D) image registration. In this work, we present a fast, self-initialised ASM approach that simultaneously fits multiple objects hierarchically controlled by spatially weighted shape learning...
November 21, 2016: Physics in Medicine and Biology
W K Chiu, W C Lam, N H Chu, C Km Mok, W K Tung, F Yl Leung, S M Ting
INTRODUCTION: Rainlily, the first one-stop crisis centre in Hong Kong, was set up in 2000 to protect female victims of sexual violence. This study aimed to analyse the characteristics of sexual assault cases and victims who presented to two hospitals in Hong Kong. The data are invaluable for health care professionals and policymakers to improve service provision to these victims. METHODS: This retrospective analysis of hospital records was conducted in two acute hospitals under the Hospital Authority in Hong Kong...
October 24, 2016: Hong Kong Medical Journal, Xianggang Yi Xue za Zhi
Johannes A Govaert, Marc J P M Govaert, Marta Fiocco, Wouter A van Dijk, Rob A E M Tollenaar, Michel W J M Wouters
: Background Due to increasing healthcare costs, discussions regarding increased hospital costs when operating on high-risk patients is rising. Therefore, the aim of this study was to analyze if oldest-old colorectal cancer patients have a greater impact on hospital costs than their younger counterparts. METHODS: All colorectal cancer procedures performed in 29 Dutch hospitals between 2010 and 2012 and listed in the Dutch Surgical Colorectal Audit were analyzed...
October 25, 2016: Journal of Surgical Oncology
Xingdong Chen, Ziyu Yuan, Ming Lu, Yuechan Zhang, Li Jin, Weimin Ye
To further examine the association between oral hygiene and esophageal squamous cell carcinoma (ESCC) risk and the effect modification of other exposures, we conducted a population-based case-control study between 2010 and 2012 in Taixing, China, a high-risk area for ESCC. Cases were primarily recruited from endoscopy units at local hospitals, supplemented by linkage to the local Cancer Registry. Control subjects were frequency matched to cases by sex and age (5-year groups) and were randomly selected from the Taixing Population Registry...
October 25, 2016: International Journal of Cancer. Journal International du Cancer
Aneta M Białkowska
2,3-Butanediol (2,3-BD) is a promising bulk chemical with a potentially wide range of applications e.g., in the manufacture of printing inks, perfumes, synthetic rubber, fumigants, antifreeze agents, fuel additives, foodstuffs and pharmaceuticals. Its high heating value and ability to increase the octane number of fuels make 2,3-BD a promising drop-in fuel. It can also be converted to methyl-ethyl ketone (MEK), which is considered an effective liquid fuel additive. After combination with MEK and hydrogenation reaction, 2,3-BD can be converted to octane, which is used to produce high-quality aviation fuel...
December 2016: World Journal of Microbiology & Biotechnology
Oni J Blackstock, Brent A Moore, Gail V Berkenblit, Sarah K Calabrese, Chinazo O Cunningham, David A Fiellin, Viraj V Patel, Karran A Phillips, Jeanette M Tetrault, Minesh Shah, E Jennifer Edelman
BACKGROUND: Among health care providers, prescription of HIV pre-exposure prophylaxis (PrEP) has been low. Little is known specifically about primary care physicians (PCPs) with regard to PrEP awareness and adoption (i.e., prescription or referral), and factors associated with adoption. OBJECTIVE: To assess PrEP awareness, PrEP adoption, and factors associated with adoption among PCPs. DESIGN: Cross-sectional online survey conducted in April and May 2015...
October 24, 2016: Journal of General Internal Medicine
Colin Hamlin, Kanwar Bhangu, Alexander Villafranca, Manpreet Bhangu, Robert Brown, Marshall Tenenbein, Eric Jacobsohn
PURPOSE: Historically, anesthesiology departments have played a small role in teaching the pre-clerkship component of undergraduate medical education (UGME). The purpose of this study was to measure the current participation of Canadian anesthesiologists in UGME with a focus on pre-clerkship. METHODS: Three surveys were developed in collaboration with the Association of Canadian Departments of Anesthesia. After an initial series of validation procedures, the surveys were distributed to anesthesia department heads, UGME directors, and associate deans at the 17 Canadian medical schools...
October 24, 2016: Canadian Journal of Anaesthesia, Journal Canadien D'anesthésie
Andrea Calvo, Cristina Moglia, Christian Lunetta, Kalliopi Marinou, Nicola Ticozzi, Gianluca Drago Ferrante, Carlo Scialo, Gianni Sorarù, Francesca Trojsi, Amelia Conte, Yuri M Falzone, Rosanna Tortelli, Massimo Russo, Adriano Chiò, Valeria Ada Sansone, Gabriele Mora, Vincenzo Silani, Paolo Volanti, Claudia Caponnetto, Giorgia Querin, Maria Rosaria Monsurrò, Mario Sabatelli, Nilo Riva, Giancarlo Logroscino, Sonia Messina, Nicola Fini, Jessica Mandrioli
The aim of this multicenter, retrospective study is to investigate the role of clinical characteristics and therapeutic intervention on ALS prognosis. The study included patients diagnosed from January 1, 2009 to December 31, 2013 in 13 Italian referral centers for ALS located in 10 Italian regions. Caring neurologists collected a detailed phenotypic profile and follow-up data until death into an electronic database. One center collected also data from a population-based registry for ALS. 2648 incident cases were collected...
October 24, 2016: Journal of Neurology
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