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https://www.readbyqxmd.com/read/29328299/coherent-modulation-up-to-100-gbd-16qam-using-silicon-organic-hybrid-soh-devices
#1
S Wolf, H Zwickel, C Kieninger, M Lauermann, W Hartmann, Y Kutuvantavida, W Freude, S Randel, C Koos
We demonstrate the generation of higher-order modulation formats using silicon-based inphase/quadrature (IQ) modulators at symbol rates of up to 100 GBd. Our devices exploit the advantages of silicon-organic hybrid (SOH) integration, which combines silicon-on-insulator waveguides with highly efficient organic electro-optic (EO) cladding materials to enable small drive voltages and sub-millimeter device lengths. In our experiments, we use an SOH IQ modulator with a π-voltage of 1.6 V to generate 100 GBd 16QAM signals...
January 8, 2018: Optics Express
https://www.readbyqxmd.com/read/29316676/comparing-u-s-injury-death-estimates-from-gbd-2015-and-cdc-wonder
#2
Yue Wu, Xunjie Cheng, Peishan Ning, Peixia Cheng, David C Schwebel, Guoqing Hu
Objective: The purpose of the present study was to examine consistency in injury death statistics from the United States CDC Wide-ranging Online Data for Epidemiologic Research (CDC WONDER) with those from GBD 2015 estimates. Methods: Differences in deaths and the percent difference in deaths between GBD 2015 and CDC WONDER were assessed, as were changes in deaths between 2000 and 2015 for the two datasets. Results: From 2000 to 2015, GBD 2015 estimates for the U.S. injury deaths were somewhat higher than CDC WONDER estimates in most categories, with the exception of deaths from falls and from forces of nature, war, and legal intervention in 2015...
January 7, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29305393/the-contribution-of-neonatal-jaundice-to-global-child-mortality-findings-from-the-gbd-2016-study
#3
REVIEW
Bolajoko O Olusanya, Stephanie Teeple, Nicholas J Kassebaum
No abstract text is available yet for this article.
January 5, 2018: Pediatrics
https://www.readbyqxmd.com/read/29228198/the-contribution-of-alcohol-to-the-east-west-life-expectancy-gap-in-europe-from-1990-onward
#4
Sergi Trias-Llimós, Anton E Kunst, Domantas Jasilionis, Fanny Janssen
Background: Central and Eastern European (CEE) countries have lower life expectancies and higher alcohol-attributable mortality than Western European countries. We examine the contribution of alcohol consumption to mortality across Europe, and specifically to the East-West life expectancy gap from 1990 onward. Methods: We retrieved alcohol-attributable mortality rates (GBD Study 2013) and all-cause mortality rates (Human Mortality Database) by age and sex for nine CEE countries and for the EU-15 countries...
December 8, 2017: International Journal of Epidemiology
https://www.readbyqxmd.com/read/29223583/the-global-burden-of-tuberculosis-results-from-the-global-burden-of-disease-study-2015
#5
(no author information available yet)
BACKGROUND: An understanding of the trends in tuberculosis incidence, prevalence, and mortality is crucial to tracking of the success of tuberculosis control programmes and identification of remaining challenges. We assessed trends in the fatal and non-fatal burden of tuberculosis over the past 25 years for 195 countries and territories. METHODS: We analysed 10 691 site-years of vital registration data, 768 site-years of verbal autopsy data, and 361 site-years of mortality surveillance data using the Cause of Death Ensemble model to estimate tuberculosis mortality rates...
December 6, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/29221432/sex-and-ethnic-racial-specific-risk-factors-for-gallbladder-disease
#6
Jane C Figueiredo, Christopher Haiman, Jacqueline Porcel, James Buxbaum, Daniel Stram, Neal Tambe, Wendy Cozen, Lynne Wilkens, Loic Le Marchand, Veronica Wendy Setiawan
BACKGROUND: Gallbladder disease (GBD) is a highly prevalent condition; however, little is known about potential differences in risk factors by sex and ethnicity/race. Our aim was to evaluate dietary, reproductive and obesity-related factors and GBD in multiethnic populations. METHODS: We performed a prospective analysis from the Multiethnic Cohort study who self-identified as non-Hispanic White (n = 32,103), African American (n = 30,209), Japanese (n = 35,987), Native Hawaiian (n = 6942) and Latino (n = 39,168)...
December 8, 2017: BMC Gastroenterology
https://www.readbyqxmd.com/read/29216565/incidence-prevalence-mortality-disability-adjusted-life-years-and-risk-factors-of-cancer-in-australia-and-comparison-with-oecd-countries-1990-2015-findings-from-the-global-burden-of-disease-study-2015
#7
Yohannes Adama Melaku, Sarah L Appleton, Tiffany K Gill, Felix A Ogbo, Elizabeth Buckley, Zumin Shi, Tim Driscoll, Robert Adams, Benjamin C Cowie, Christina Fitzmaurice
BACKGROUND: Comparative evidence on the burden, trend, and risk factors of cancer is limited. Using data from the Global Burden of Disease (GBD) study, we aimed to assess cancer burden - incidence, prevalence, mortality, disability-adjusted life years (DALYs) - and attributable risk factors for Australia between 1990 and 2015, and to compare them with those of 34 members of the Organisation for Economic Co-operation and Development (OECD). METHODS: The general GBD cancer estimation methods were used with data input from vital registration systems and cancer registries...
December 4, 2017: Cancer Epidemiology
https://www.readbyqxmd.com/read/29205183/feasibility-of-conversion-of-percutaneous-cholecystostomy-to-internal-transmural-endoscopic-ultrasound-guided-gallbladder-drainage
#8
Tanyaporn Chantarojanasiri, Saburo Matsubara, Hiroyuki Isayama, Yousuke Nakai, Naminatsu Takahara, Suguru Mizuno, Hirofumi Kogure, Ryunosuke Hakuta, Yukiko Ito, Minoru Tada, Kazuhiko Koike
BACKGROUND/AIM: Percutaneous cholecystostomy [percutaneous transhepatic gallbladder drainage (PTGBD)] is the treatment of choice in surgically unfit patients with acute cholecystitis. However, PTGBD tube removal after symptoms resolution results in 41-46% recurrence. This study aims to demonstrate the feasibility of the conversion of PTGBD to transmural endoscopic ultrasound-guided gallbladder drainage (EUS-GBD) using plastic stents in patients unfit for cholecystectomy. PATIENTS AND METHODS: Patients who underwent internal transmural EUS-GBD as a conversion from PTGBD were reviewed...
November 2017: Saudi Journal of Gastroenterology: Official Journal of the Saudi Gastroenterology Association
https://www.readbyqxmd.com/read/29166948/cause-specific-mortality-for-249-causes-in-brazil-and-states-during-1990-2015-a-systematic-analysis-for-the-global-burden-of-disease-study-2015
#9
Elisabeth B França, Valéria Maria de Azeredo Passos, Deborah Carvalho Malta, Bruce B Duncan, Antonio Luiz P Ribeiro, Mark D C Guimarães, Daisy M X Abreu, Ana Maria N Vasconcelos, Mariângela Carneiro, Renato Teixeira, Paulo Camargos, Ana Paula S Melo, Bernardo L Queiroz, Maria Inês Schmidt, Lenice Ishitani, Roberto Marini Ladeira, Otaliba L Morais-Neto, Maria Tereza Bustamante-Teixeira, Maximiliano R Guerra, Isabela Bensenor, Paulo Lotufo, Meghan Mooney, Mohsen Naghavi
BACKGROUND: Reliable data on cause of death (COD) are fundamental for planning and resource allocation priorities. We used GBD 2015 estimates to examine levels and trends for the leading causes of death in Brazil from 1990 to 2015. METHODS: We describe the main analytical approaches focused on both overall and specific causes of death for Brazil and Brazilian states. RESULTS: There was an overall improvement in life expectancy at birth from 1990 to 2015, but with important heterogeneity among states...
November 22, 2017: Population Health Metrics
https://www.readbyqxmd.com/read/29150201/nations-within-a-nation-variations-in-epidemiological-transition-across-the-states-of-india-1990-2016-in-the-global-burden-of-disease-study
#10
(no author information available yet)
BACKGROUND: 18% of the world's population lives in India, and many states of India have populations similar to those of large countries. Action to effectively improve population health in India requires availability of reliable and comprehensive state-level estimates of disease burden and risk factors over time. Such comprehensive estimates have not been available so far for all major diseases and risk factors. Thus, we aimed to estimate the disease burden and risk factors in every state of India as part of the Global Burden of Disease (GBD) Study 2016...
November 13, 2017: Lancet
https://www.readbyqxmd.com/read/29145349/current-status-of-endoscopic-gallbladder-drainage
#11
Joey Ho Yi Chan, Anthony Yuen Bun Teoh
The gold standard for treatment of acute cholecystitis is laparoscopic cholecystectomy. However, cholecystectomy is often not suitable for surgically unfit patients who are too frail due to various co-morbidities. As such, several less invasive endoscopic treatment modalities have been developed to control sepsis, either as a definitive treatment or as a temporizing modality until the patient is stable enough to undergo cholecystectomy at a later stage. Recent developments in endoscopic ultrasound-guided gallbladder drainage (EUS-GBD) with endoscopic ultrasound (EUS)-specific stents having lumen-apposing properties have demonstrated potential as a definitive treatment modality...
November 17, 2017: Clinical Endoscopy
https://www.readbyqxmd.com/read/29116930/long-term-fine-particulate-matter-exposure-and-nonaccidental-and-cause-specific-mortality-in-a-large-national-cohort-of-chinese-men
#12
Peng Yin, Michael Brauer, Aaron Cohen, Richard T Burnett, Jiangmei Liu, Yunning Liu, Ruiming Liang, Weihua Wang, Jinlei Qi, Lijun Wang, Maigeng Zhou
BACKGROUND: Cohort studies in North America and western Europe have reported increased risk of mortality associated with long-term exposure to fine particles (PM2.5), but to date, no such studies have been reported in China, where higher levels of exposure are experienced. OBJECTIVES: We estimated the association between long-term exposure to PM2.5 with nonaccidental and cause-specific mortality in a cohort of Chinese men. METHODS: We conducted a prospective cohort study of 189,793 men 40 y old or older during 1990-91 from 45 areas in China...
November 7, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/29097809/the-burden-and-challenges-of-tuberculosis-in-china-findings-from-the-global-burden-of-disease-study-2015
#13
Sui Zhu, Lan Xia, Shicheng Yu, Saobing Chen, Juying Zhang
To achieve the End Tuberculosis (TB) Strategy, it is important to understand the characteristics of TB in China, which may provide the government with important clues for controlling TB by 2030. Data from the Global Burden of Disease Study 2015 (GBD 2015) and Institute for Health Metrics and Evaluation (IHME) were reviewed and analysed. The age-standardized death rate decreased by 83.79% [95% uncertainty interval (UI) 73.06-87.10] from 1990 to 2015. The age-standardized prevalence of TB in males decreased steadily by 33...
November 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29097050/a-county-level-estimate-of-pm2-5-related-chronic-mortality-risk-in-china-based-on-multi-model-exposure-data
#14
Qing Wang, Jiaonan Wang, Mike Z He, Patrick L Kinney, Tiantian Li
BACKGROUND: Ambient fine particulate matter (PM2.5) pollution is currently a serious environmental problem in China, but evidence of health effects with higher resolution and spatial coverage is insufficient. OBJECTIVE: This study aims to provide a better overall understanding of long-term mortality effects of PM2.5 pollution in China and a county-level spatial map for estimating PM2.5 related premature deaths of the entire country. METHOD: Using four sets of satellite-derived PM2...
January 2018: Environment International
https://www.readbyqxmd.com/read/29092252/low-complexity-split-digital-backpropagation-for-digital-subcarrier-multiplexing-optical-transmissions
#15
Zhuopeng Xiao, Qunbi Zhuge, Songnian Fu, Fangyuan Zhang, Meng Qiu, Ming Tang, Deming Liu, David V Plant
A split digital backpropagation (DBP) scheme for digital subcarrier-multiplexing (SCM) transmissions, denoted as SSDBP, is proposed and studied in both experiments and simulations. The implementation of the SSDBP is split at the transmitter and the receiver, leveraging existing chromatic dispersion (CD) compensation blocks to reduce complexity. We experimentally demonstrate that the SSDBP, with a complexity reduction up to 50% compared to the original receiver based SCM-DBP, can achieve a nonlinear compensation Q(2) gain of 0...
October 30, 2017: Optics Express
https://www.readbyqxmd.com/read/29072438/economic-burden-of-smoking-in-iran-a-prevalence-based-annual-cost-approach
#16
Satar Rezaei, Behzad Karami Matin, Mohammad Hajizadeh, Mohammad Bazyar, Ali Akbari Sari
Objectives: The burden of smoking on the health system and society is significant. The current study aimed to estimate the annual direct and indirect costs of smoking in Iran for the year 2014. Methods: A prevalence-based diseasespecific approach was used to determine costs associated with the three most common smoking-related diseases: lung cancer (LC), chronic obstructive pulmonary disease (COPD) and ischaemic heart disease (IHD). Data on healthcare utilization were obtained from an original survey, hospital records and questionnaires...
October 26, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/29041528/1-024-tb-s-wavelength-conversion-in-a-silicon-waveguide-with-reverse-biased-p-i-n-junction
#17
Isaac Sackey, Andrzej Gajda, Anna Peczek, Erik Liebig, Lars Zimmermann, Klaus Petermann, Colja Schubert
We experimentally show an all-optical wavelength conversion of 8 × 32-GBd single-polarization 16QAM signals using a silicon nano-rib waveguide. The application of reverse biasing of the p-i-n junction of the waveguide allows a conversion efficiency of -8.5 dB with a measured 3-dB optical bandwidth of about 40 nm. Using digital coherent reception, it is shown that the receiver optical signal-to-noise ratio penalty, at a bit-error ratio of 1 × 10(-3), of the wavelength-converted signals over all eight channels was less than 0...
September 4, 2017: Optics Express
https://www.readbyqxmd.com/read/29036993/-study-on-the-disease-burden-of-chinese-adolescent-in-2015
#18
R B Xu, D Y Jin, Y Song, X J Wang, Y H Dong, Z G Yang, Y J Chen, J Ma
Objective: To discuss the main causes and risk factors of disability and death among current Chinese adolescents. Methods: Subnational data of China from Global Burden of Disease Study 2015 (GBD 2015) was used to rank the causes and risk factors leading to death and disability adjusted life years (DALY) in Chinese adolescents aged between 10 and 19 years old, and thereby to analyze the main cauese and risk factors of death and DALY among Chinese adolescents in different genders. Results: In 2015, among Chinese adolescents aged 10-19 years old, the total DALY was 13 million 490 thousand years, and the total number of deaths was 63 258 cases...
October 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/28983565/the-burden-of-primary-liver-cancer-and-underlying-etiologies-from-1990-to-2015-at-the-global-regional-and-national-level-results-from-the-global-burden-of-disease-study-2015
#19
(no author information available yet)
No abstract text is available yet for this article.
December 1, 2017: JAMA Oncology
https://www.readbyqxmd.com/read/28981518/phytochemical-characterization-of-the-vochysia-rufa-vochysiaceae-extract-and-its-effects-on-oxidative-stress-in-the-pancreata-of-streptozotocin-induced-diabetic-rats
#20
Neire M de Gouveia, Wellington F Rodrigues, Raquel M F de Sousa, Luciana K Calábria, Antonio V Mundim, Camila B Miguel, Carlo J F Oliveira, Javier E Lazo-Chica, Alberto de Oliveira, João H G Lago, Vagner B Dos Santos, Claudimir L do Lago, Foued S Espindola
Aqueous extract of macerated Vochysia rufa stem bark has been commonly used in the treatment of diabetes. Therefore, we evaluated the antihyperglycemic and antioxidant effects of an extract of V. rufa on the pancreata of streptozotocin (STZ)-induced diabetic rats. Animals received one of the following treatments daily by oral gavage: water (diabetic-control), V. rufa extract (diabetic-V. rufa), or glibenclamide (diabetic-GBD). Total antioxidant capacity; levels of thiobarbituric acid reactive substances, reduced glutathione, and sulfhydryls; and superoxide dismutase, catalase, and glutathione peroxidase (GPx) activities were measured in the pancreas...
2017: PloS One
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