Read by QxMD icon Read

road cycling

Kaiyue Zang, Jie Shen, Haosheng Huang, Mi Wan, Jiafeng Shi
The surface roughness of roads is an essential road characteristic. Due to the employed carrying platforms (which are often cars), existing measuring methods can only be used for motorable roads. Until now, there has been no effective method for measuring the surface roughness of un-motorable roads, such as pedestrian and bicycle lanes. This hinders many applications related to pedestrians, cyclists and wheelchair users. In recognizing these research gaps, this paper proposes a method for measuring the surface roughness of pedestrian and bicycle lanes based on Global Positioning System (GPS) and accelerometer sensors on bicycle-mounted smartphones...
March 19, 2018: Sensors
Gustavo Tejera, Beneharo Rodríguez, Carlos Armas, Airam Rodríguez
Insular wildlife is more prone to extinction than their mainland relatives. Thus, a basic understanding of non-natural mortality sources is the first step in the development of conservation management plans. The Canary Islands are an important tourist destination due to their unique climate and rich scenery and biodiversity. During the last few decades, there has been significant development of urban areas and busy road networks. However, there have been no studies describing the effects of road mortality on wildlife in this archipelago...
2018: PloS One
Dean Calahan, Edward Osenbaugh, Walter Adey
Humanity is degrading multiple ecosystem services, potentially irreversibly. Two of the most important human impacts are excess agricultural nutrient loading in our fresh and estuarine waters and excess carbon dioxide in our oceans and atmosphere. Large-scale global intervention is required to slow, halt, and eventually reverse these stresses. Cultivating attached polyculture algae within controlled open-field photobioreactors is a practical technique for exploiting the ubiquity and high primary productivity of algae to capture and recycle the pollutants driving humanity into unsafe regimes of biogeochemical cycling, ocean acidification, and global warming...
February 2018: Heliyon
Julia Karmann, Benedikt Müller, Ulrich Z Hammes
Pathways for assimilates. During their life cycle, plants alternate between a haploid stage, the gametophyte, and a diploid stage, the sporophyte. In higher plants, meiosis generates the gametophyte deeply embedded in the maternal tissue of the flower. The megaspore mother cell undergoes meiosis, and then, the surviving megaspore of the four megaspores produced undergoes mitotic divisions and finally gives rise to the female gametophyte, consisting of the egg cell, two synergids, the central cell, which due to the fusion of two nuclei is diploid (double haploid) in Arabidopsis and most angiosperms and the antipods, whose number is not fixed and varies significantly between species (Yadegari and Drews in Plant Cell 16(Suppl):S133-S141, 2004)...
March 16, 2018: Plant Reproduction
Rakesh Kumar Maurya, Mohit Raj Saxena, Piyush Rai, Aashish Bhardwaj
Currently, diesel engines are more preferred over gasoline engines due to their higher torque output and fuel economy. However, diesel engines confront major challenge of meeting the future stringent emission norms (especially soot particle emissions) while maintaining the same fuel economy. In this study, nanosize range soot particle emission characteristics of a stationary (non-road) diesel engine have been experimentally investigated. Experiments are conducted at a constant speed of 1500 rpm for three compression ratios and nozzle opening pressures at different engine loads...
March 12, 2018: Environmental Science and Pollution Research International
(no author information available yet)
We, the Editors and Publishers of the International Journal of Sports Physiology and Performance, have withdrawn the following article in whole: Plews, DJ, Laursen, PB. Training intensity distribution over a four-year cycle in Olympic champion rowers: different roads lead to Rio [version of record published online ahead of print September 27, 2017]. Int J Sports Physiol Perform. doi: 10.1123/ijspp.2017-0343 . The Editorial Office was contacted with the request to withdraw this article informing the Editor-in-Chief that the data in this article were not permissible to use due to undisclosed contractual obligations...
March 13, 2018: International Journal of Sports Physiology and Performance
A L Collins, Y Zhang, S McMillan, E R Dixon, A Stringfellow, S Bateman, D A Sear
Oxygen demand in river substrates providing important habitats for the early life stages of aquatic ecology, including lithophilous fish, can arise due to the oxidation of sediment-associated organic matter. Oxygen depletion associated with this component of river biogeochemical cycling, will, in part, depend on the sources of such material. A reconnaissance survey was therefore undertaken to assess the relative contributions from bed sediment-associated organic matter sources potentially impacting on the River Axe Special Area of Conservation (SAC), in SW England...
December 2017: River Research and Applications
Raimund Nagel, Reuben J Peters
Biosynthesis of the gibberellin plant hormones evolved independently in plants and microbes, but the pathways proceed via similar transformations. The combined demethylation and -lactone ring forming transformation is of significant mechanistic interest, yet remains opaque. The relevant CYP112 from bacteria was probed via activity assays and 18O2 labeling experiments. Notably, the ability of tert-butyl hydroperoxide to drive this transformation indicates use of the ferryl-oxo (Compound I) from the CYP catalytic cycle for this reaction...
March 8, 2018: Angewandte Chemie
Christopher Drudge, James Johnson, Elaina MacIntyre, Ye Li, Ray Copes, Stanley Ing, Steven Johnson, Sunil Varughese, Hong Chen
Road traffic noise can adversely impact the health of city residents, particularly when it occurs at night. The objective of this study was to evaluate nighttime traffic ambient noise in Toronto, Canada using measured and model-estimated noise levels. Road traffic noise was measured at 767 locations over three seasonal sampling campaigns between June 2012 and October 2013 to fully capture noise variability in Toronto. Temporal and campaign-specific spatial models, developed using the noise measurements, were used to build a final predictive surface...
March 1, 2018: Journal of Occupational and Environmental Hygiene
Sarfraz Ahmed, Siti Amrah Sulaiman, Atif Amin Baig, Muhammad Ibrahim, Sana Liaqat, Saira Fatima, Sadia Jabeen, Nighat Shamim, Nor Hayati Othman
Honey clasps several medicinal and health effects as a natural food supplement. It has been established as a potential therapeutic antioxidant agent for various biodiverse ailments. Data report that it exhibits strong wound healing, antibacterial, anti-inflammatory, antifungal, antiviral, and antidiabetic effects. It also retains immunomodulatory, estrogenic regulatory, antimutagenic, anticancer, and numerous other vigor effects. Data also show that honey, as a conventional therapy, might be a novel antioxidant to abate many of the diseases directly or indirectly associated with oxidative stress...
2018: Oxidative Medicine and Cellular Longevity
Carol V Tadros, Jagoda Crawford, Pauline C Treble, Andy Baker, David D Cohen, Armand J Atanacio, Stuart Hankin, Regina Roach
Characterisation of atmospheric aerosols is of major importance for: climate, the hydrological cycle, human health and policymaking, biogeochemical and palaeo-climatological studies. In this study, the chemical composition and source apportionment of PM2.5 (particulate matter with aerodynamic diameters less than 2.5μm) at Yarrangobilly, in the Snowy Mountains, SE Australia are examined and quantified. A new aerosol monitoring network was deployed in June 2013 and aerosol samples collected during the period July 2013 to July 2017 were analysed for 22 trace elements and black carbon by ion beam analysis techniques...
February 24, 2018: Science of the Total Environment
Laura Minet, Rick Liu, Marie-France Valois, Junshi Xu, Scott Weichenthal, Marianne Hatzopoulou
Land-use regression (LUR) models of air pollutants are frequently developed based on short-term stationary or mobile monitoring approaches, which raises the question of whether these two data collection protocols lead to similar exposure surfaces. In this study, we measured Ultrafine Particles (UFP) and Black Carbon (BC) concentrations in Toronto during summer 2016, using two short-term data collection approaches: mobile, involving 3,023 road segments sampled on bicycles, and stationary, involving 92 sidewalk locations...
February 23, 2018: Environmental Science & Technology
Amy L Woods, Anthony J Rice, Laura A Garvican-Lewis, Alice M Wallett, Bronwen Lundy, Margot A Rogers, Marijke Welvaert, Shona Halson, Andrew McKune, Kevin G Thompson
BACKGROUND: Recent research has demonstrated decreases in resting metabolic rate (RMR), body composition and performance following a period of intensified training in elite athletes, however the underlying mechanisms of change remain unclear. Therefore, the aim of the present study was to investigate how an intensified training period, designed to elicit overreaching, affects RMR, body composition, and performance in trained endurance athletes, and to elucidate underlying mechanisms. METHOD: Thirteen (n = 13) trained male cyclists completed a six-week training program consisting of a "Baseline" week (100% of regular training load), a "Build" week (~120% of Baseline load), two "Loading" weeks (~140, 150% of Baseline load, respectively) and two "Recovery" weeks (~80% of Baseline load)...
2018: PloS One
Aghygh Heidari, Samsam Dabiri, Feridoun Sabzi
Angiosarcomas of the uterine is a malignant and poor prognostic tumor and can either be a primary sarcoma or arising secondary to radiotherapy of a more complex tumor. Primary uterine angiosarcomas are exceptional and probably arise from embryonic vascular remnants, teratoma or from the rich uterine vasculature. We reported a rare case of primary angiosarcoma of uterine that at the time of diagnosis presented with sign and symptom of local and distant metastasis. The patient presented with dyspnea, chest pain, and history of vaginal bleeding and pelvic pain...
January 2018: Acta Medica Iranica
Hyun-Ki Cho, Chang-Gyun Park, Han-Jae Shin, Ki-Hong Park, Heung-Bin Lim
Ultrafine particles (UFPs, < 2.5 µm) in air pollutants have been identified as a major cause of respiratory diseases, since they can affect the lung alveoli through the bronchus. In particular, if toxicants such as heavy metals and polycyclic aromatic hydrocarbons (PAHs) are present in UFPs, they can cause diseases such as asthma, chronic obstructive pulmonary disease, and lung cancer. This study compared in vitro toxicity of various particulate matter including UFPs from combustion particles of diesel (diesel exhaust particles (DEP)), rice straw (RS), pine stem (PS) and coal (CC), and road dust particles from tunnel (TD) and roadside (RD)...
January 1, 2018: Toxicology and Industrial Health
Yanyong Guo, Ahmed Osama, Tarek Sayed
Despite the recognized benefits of cycling as a sustainable mode of transportation, cyclists are considered vulnerable road users and there are concerns about their safety. Therefore, it is essential to investigate the factors affecting cyclist safety. The goal of this study is to evaluate and compare different approaches of modeling macro-level cyclist safety as well as investigating factors that contribute to cyclist crashes using a comprehensive list of covariates. Data from 134 traffic analysis zones (TAZs) in the City of Vancouver were used to develop macro-level crash models (CM) incorporating variables related to actual traffic exposure, socio-economics, land use, built environment, and bike network...
February 1, 2018: Accident; Analysis and Prevention
Sijie Li, Honghu Tang, Peng Ge, Feng Jiang, Jiahui Zhou, Chenyang Zhang, Hongshuai Hou, Wei Sun, Xiaobo Ji
Considering serious pollution from the traditional chemical synthesis process, the resource-rich, clean and first-hand electrode materials are greatly desired. Natural ore-Molybdenite (MoS2), as the low cost, high yield and environmental friendly natural source, is investigated as a first-hand anode material for LIBs. Compared with chemosynthetic pure MoS2, natural molybdenite provides ordered ion diffusion channel more effectively owing to its excellent characteristics, containing well crystalline, large lattice distance and trance dopants...
January 27, 2018: ACS Applied Materials & Interfaces
Márcia Moreira de Ávila, Andreia Fernandes Brilhante, Cristian Ferreira de Souza, Paula Dias Bevilacqua, Eunice Aparecida Bianchi Galati, Reginaldo Peçanha Brazil
BACKGROUND: Phlebotomine sand flies (Diptera: Psychodidae) are insects of medical importance due to their involvement in the zoonotic transmission of Leishmania spp. to vertebrates. The aim of this work was to study the ecology of the sand fly fauna of two types of environments, a rural environment (the Transacreana Road) and an urban park (Horto Florestal Park), both located in the municipality of Rio Branco in the state of Acre, Brazil. Additionally, this study intended to investigate Leishmania infection and blood meal sources of these sand flies using molecular techniques...
January 26, 2018: Parasites & Vectors
Jose Ignacio Priego Quesada, Zachary Y Kerr, William M Bertucci, Felipe P Carpes
Sampling bias is an issue for research involving cyclists. The heterogeneity of cyclist populations, on the basis of skill level and riding purpose, can generate incorrect inferences about one specific segment of the population of interest. In addition, a more accurate categorization would be helpful when physiological parameters are not available. This study proposes using self-reported data to categorize amateur cyclist types by varying skill levels and riding purposes, therefore improving sample selection in experimental studies...
January 25, 2018: Journal of Sports Sciences
Chih-Wei Pai, Hsiao-Yu Lin, Shin-Han Tsai, Ping-Ling Chen
OBJECTIVES: Bicyclists and motorcyclists contribute substantially to the morbidity and mortality rates of road crash casualties. The objective of the study was to investigate the crash characteristics of bicyclist and motorcyclist casualties presented to hospitals in Taiwan resulting from crashes. METHODS: By using linked data from The National Traffic Crash Dataset and the National Health Insurance Database between 2003 and 2012, logistic regression models were used to examine the determinants of hospitalisation among motorcyclist and bicyclist casualties...
2018: PloS One
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"