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https://www.readbyqxmd.com/read/28324850/sludge-management-modeling-to-enhance-p-recovery-as-struvite-in-wastewater-treatment-plants
#1
N Martí, R Barat, A Seco, L Pastor, A Bouzas
Interest in phosphorus (P) recovery and reuse has increased in recent years as supplies of P are declining. After use, most of the P remains in wastewater, making Wastewater Treatment Plants (WWTPs) a vital part of P recycling. In this work, a new sludge management operation was studied by modeling in order to recover P in the form of struvite and minimize operating problems due to uncontrolled P precipitation in WWTPs. During the study, intensive analytical campaigns were carried out on the water and sludge lines...
March 15, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28324145/sustainable-development-for-whom-and-how-exploring-the-gaps-between-popular-discourses-and-ground-reality-using-the-mexican-jatropha-biodiesel-case
#2
Aparajita Banerjee, Kathleen E Halvorsen, Amarella Eastmond-Spencer, Sam R Sweitz
In the last decade, jatropha-based bioenergy projects have gotten significant attention as a solution to various social, economic, and environmental problems. Jatropha's popularity stemmed out from different discourses, some real and some perceived, in scientific and non-scientific literature. These discourses positioned jatropha as a crop helpful in producing biodiesel and protecting sustainability by reducing greenhouse gas emissions compared to fossil fuels and increasing local, rural development by creating jobs...
March 21, 2017: Environmental Management
https://www.readbyqxmd.com/read/28323637/accelerated-monte-carlo-simulation-on-the-chemical-stage-in-water-radiolysis-using-gpu
#3
Zhen Tian, Steve B Jiang, Xun Jia
The accurate simulation of water radiolysis is an important step to understand the mechanisms of radiobiology and quantitatively test some hypotheses regarding radiobiological effects. However, the simulation of water radiolysis is highly time consuming, taking hours or even days to be completed by a conventional CPU processor. This time limitation hinders cell-level simulations for a number of research studies. We recently initiated efforts to develop gMicroMC, a GPU-based fast microscopic MC simulation package for water radiolysis...
March 21, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28319845/surface-transport-processes-in-charged-porous-media
#4
Jorge Gabitto, Costas Tsouris
Surface transport processes are very important in chemistry, colloidal sciences, engineering, biology, and geophysics. Natural or externally produced charges on surfaces create electrical double layers (EDLs) at the solid-liquid interface. The existence of the EDLs produces several complex processes including bulk and surface transport of ions. In this work, a model is presented to simulate bulk and transport processes in homogeneous porous media comprising big pores. It is based on a theory for capacitive charging by ideally polarizable porous electrodes without Faradaic reactions or specific adsorption of ions...
March 3, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28319844/a-comparative-study-of-casson-fluid-with-homogeneous-heterogeneous-reactions
#5
Muhammad Ijaz Khan, Muhammad Waqas, Tasawar Hayat, Ahmed Alsaedi
Magnetohydrodynamic (MHD) stagnation point flow of Casson fluid towards a stretching sheet is addressed. Homogeneous-heterogeneous reactions together with homogeneous heat effect subject to a resistive force of electromagnetic origin is discussed. It is assumed that the homogeneous process in the ambient fluid is governed by first order kinetics and the heterogeneous process on the wall surface is given by isothermal cubic autocatalator kinetics. Ordinary differential systems have been considered. Solutions of the problems are presented via a numerical technique namely built in shooting method...
March 9, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28319785/the-long-and-complex-road-in-the-search-for-treatment-for-mental-disorders-an-analysis-of-the-process-in-five-groups-of-patients
#6
Gema Del Valle, Amparo Belloch, Carmen Carrió
Seeking treatment for mental-health problems is a complex process, with different underlying motives in each stage. However, the entire process and these motives have hardly been investigated. This study aims to analyze the different stages of the help-seeking process and their underlying motives in five groups of patients with different mental disorders. In all, 156 patients seeking treatment in outpatient mental health clinics were individually interviewed: 71 had Obsessive-Compulsive Disorder (OCD), 21 had Agoraphobia (AGO), 18 had Major Depressive Disorder (MDD), 20 had Anorexia Nervosa (AN), and 22 had Cocaine Dependence (COC)...
March 15, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28319767/potential-for-thermochemical-conversion-of-biomass-residues-from-the-integrated-sugar-ethanol-process-fate-of-ash-and-ash-forming-elements
#7
Meheretu Jaleta Dirbeba, Anders Brink, Nikolai DeMartini, Maria Zevenhoven, Mikko Hupa
In this work, potential for thermochemical conversion of biomass residues from an integrated sugar-ethanol process and the fate of ash and ash-forming elements in the process are presented. Ash, ash-forming elements, and energy flows in the process were determined using mass balances and analyses of eight different biomass samples for ash contents, elemental compositions, and heating values. The results show that the ash content increases from the sugarcane to the final residue, vinasse. The cane straw, which is left in the field, contains one-third of the energy and 25% of the K and Cl while the vinasse contains 2% of the energy and 40% of the K and Cl in the cane...
March 6, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28319479/brainstem-evoked-potential-indices-of-subcortical-auditory-processing-after-mild-traumatic-brain-injury
#8
Kathy R Vander Werff, Brian Rieger
OBJECTIVES: The primary aim of this study was to assess subcortical auditory processing in individuals with chronic symptoms after mild traumatic brain injury (mTBI) by measuring auditory brainstem responses (ABRs) to standard click and complex speech stimuli. Consistent with reports in the literature of auditory problems after mTBI (despite normal-hearing thresholds), it was hypothesized that individuals with mTBI would have evidence of impaired neural encoding in the auditory brainstem compared to noninjured controls, as evidenced by delayed latencies and reduced amplitudes of ABR components...
March 17, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/28319152/a-digital-pcr-method-for-identifying-and-quantifying-adulteration-of-meat-species-in-raw-and-processed-food
#9
Junan Ren, Tingting Deng, Wensheng Huang, Ying Chen, Yiqiang Ge
Meat adulteration is a worldwide concern. In this paper, a new droplet digital PCR (ddPCR) method was developed for the quantitative determination of the presence of chicken in sheep and goat meat products. Meanwhile, a constant (multiplication factor) was introduced to transform the ratio of copy numbers to the proportion of meats. The presented ddPCR method was also proved to be more accurate (showing bias of less than 9% in the range from 5% to 80%) than real-time PCR, which has been widely used in this determination...
2017: PloS One
https://www.readbyqxmd.com/read/28318825/riparian-erosion-vulnerability-model-based-on-environmental-features
#10
Alejandra Botero-Acosta, Maria L Chu, Jorge A Guzman, Patrick J Starks, Daniel N Moriasi
Riparian erosion is one of the major causes of sediment and contaminant load to streams, degradation of riparian wildlife habitats, and land loss hazards. Land and soil management practices are implemented as conservation and restoration measures to mitigate the environmental problems brought about by riparian erosion. This, however, requires the identification of vulnerable areas to soil erosion. Because of the complex interactions between the different mechanisms that govern soil erosion and the inherent uncertainties involved in quantifying these processes, assessing erosion vulnerability at the watershed scale is challenging...
March 16, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28318603/rupture-risk-in-abdominal-aortic-aneurysms-a-realistic-assessment-of-the-explicit-gpu-approach
#11
V Strbac, D M Pierce, B Rodriguez-Vila, J Vander Sloten, N Famaey
Accurate estimation of peak wall stress (PWS) is the crux of biomechanically motivated rupture risk assessment for abdominal aortic aneurysms aimed to improve clinical outcomes. Such assessments often use the finite element (FE) method to obtain PWS, albeit at a high computational cost, motivating simplifications in material or element formulations. These simplifications, while useful, come at a cost of reliability and accuracy. We achieve research-standard accuracy and maintain clinically applicable speeds by using novel computational technologies...
February 27, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28318280/adjustment-between-work-demands-and-health-needs-development-of-the-work-health-balance-questionnaire
#12
Andrea Gragnano, Massimo Miglioretti, Monique H W Frings-Dresen, Angela G E M de Boer
PURPOSE: This study presented the construct of Work-Health Balance (WHB) and the design and validation of the Work-Health Balance Questionnaire (WHBq). More and more workers have a long-standing health problem or disability (LSHPD). The management of health needs and work demands is crucial for the quality of working life and work retention of these workers. However, no instrument exists measuring this process. The WHBq assesses key factors in the process of adjusting between health needs and work demands...
March 20, 2017: Rehabilitation Psychology
https://www.readbyqxmd.com/read/28317505/evaluations-and-perceptions-of-others-evaluations-of-negative-alcohol-related-consequences-predict-negative-alcohol-related-consequences-among-college-drinkers
#13
Dipali Venkataraman Rinker, Chelsie M Young, Heather Krieger, Jordanna Lembo, Clayton Neighbors
OBJECTIVE: A key assumption when assessing alcohol-related problems is that these problems are considered negative. A growing literature suggests that college drinkers do not perceive all measured consequences to be negative. Research has established the impact of others' beliefs on personal beliefs and behaviors. The purpose of this study was to assess the effect of perceptions of others' evaluations (POE) of consequences on one's own evaluations and subsequent experiences of consequences...
March 2017: Journal of Studies on Alcohol and Drugs
https://www.readbyqxmd.com/read/28316893/contrasting-determinants-for-the-introduction-and-establishment-success-of-exotic-birds-in-taiwan-using-decision-trees-models
#14
Shih-Hsiung Liang, Bruno Andreas Walther, Bao-Sen Shieh
BACKGROUND: Biological invasions have become a major threat to biodiversity, and identifying determinants underlying success at different stages of the invasion process is essential for both prevention management and testing ecological theories. To investigate variables associated with different stages of the invasion process in a local region such as Taiwan, potential problems using traditional parametric analyses include too many variables of different data types (nominal, ordinal, and interval) and a relatively small data set with too many missing values...
2017: PeerJ
https://www.readbyqxmd.com/read/28316164/-advances-in-the-research-of-signaling-pathway-in-pathologic-scar-formation
#15
J Jin, B Ma, Z F Xia
Scar is the natural end of wound healing, but pathologic scar will form with the excessive hyperplasia. The problems which thus come not only include the physiological and psychological disorders caused by the change of appearance or dysfunction, but also include the economic burden for both families of the patients and society induced by the requirement of plastic or functional reconstruction. The formation of pathologic scars is affected by many factors involved in the process of wound healing, such as excessive inflammation, abnormal tissue repair, and lingering repair termination, which involve a lot of signaling pathways...
March 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28316044/changes-and-relations-of-photosynthesis-and-iron-cycling-in-anoxic-paddy-soil-amended-with-high-concentrations-of-sulfate
#16
Qin Chen, Rong Jia, Dong Qu, Ming Li
Sulfate contamination is an increasingly serious environmental problem related to microbial reduction processes in anoxic paddy soil. This study revealed the changes and interrelations of ferric iron [Fe(III)] reduction, ferrous iron [Fe(II)] oxidation, and oxygenic photosynthesis in an anoxic paddy soil (Fe-accumuli-Stagnic Anthrosols) amended with a range of high sulfate concentrations. Soil slurries mixed with 0 (control), 50, 100, 200, and 400 mmol kg(-1) Na2SO4 were incubated anaerobically under dark and light conditions...
March 18, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28316025/harmonization-of-forest-disturbance-datasets-of-the-conterminous-usa-from-1986-to-2011
#17
Christopher E Soulard, William Acevedo, Warren B Cohen, Zhiqiang Yang, Stephen V Stehman, Janis L Taylor
Several spatial forest disturbance datasets exist for the conterminous USA. The major problem with forest disturbance mapping is that variability between map products leads to uncertainty regarding the actual rate of disturbance. In this article, harmonized maps were produced from multiple data sources (i.e., Global Forest Change, LANDFIRE Vegetation Disturbance, National Land Cover Database, Vegetation Change Tracker, and Web-Enabled Landsat Data). The harmonization process involved fitting common class ontologies and determining spatial congruency to produce forest disturbance maps for four time intervals (1986-1992, 1992-2001, 2001-2006, and 2006-2011)...
April 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28315682/n-terminal-domain-of-the-cholesterol-transporter-niemann-pick-c1-like-1-npc1l1-is-essential-for-%C3%AE-tocopherol-transport
#18
Jun Kamishikiryo, Misaki Haraguchi, Shunsuke Nakashima, Yuka Tasaka, Hiroe Narahara, Narumi Sugihara, Tetsuya Nakamura, Tetsuo Morita
Both cholesterol and α-tocopherol are essential lipophilic nutrients for humans and animals. Although cholesterol in excess causes severe problems such as coronary heart disease, it is a necessary component of cell membranes and is the precursor for the biosynthesis of steroid hormones and bile acids. Niemann-Pick C1-like 1 (NPC1L1) is a cholesterol transporter that is highly expressed in the small intestine and liver in humans and plays an important role in cholesterol homeostasis. Cholesterol promotes NPC1L1 endocytosis, which is an early step in cholesterol uptake...
March 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28306247/reversible-hydrogenation-of-carbon-dioxide-to-formic-acid-and-methanol-lewis-acid-enhancement-of-base-metal-catalysts
#19
Wesley H Bernskoetter, Nilay Hazari
New and sustainable energy vectors are required as a consequence of the environmental issues associated with the continued use of fossil fuels. H2 is a potential clean energy source, but as a result of problems associated with its storage and transport as a gas, chemical H2 storage (CHS), which involves the dehydrogenation of small molecules, is an attractive alternative. In principle, formic acid (FA, 4.4 wt % H2) and methanol (MeOH, 12.6 wt % H2) can be obtained renewably and are excellent prospective liquid CHS materials...
March 17, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28304313/the-effect-of-music-therapy-in-patients-with-huntington-s-disease-a-randomized-controlled-trial
#20
Monique C H van Bruggen-Rufi, Annemieke C Vink, Ron Wolterbeek, Wilco P Achterberg, Raymund A C Roos
BACKGROUND: Music therapy may have beneficial effects on improving communication and expressive skills in patients with Huntington's disease (HD). Most studies are, however, small observational studies and methodologically limited. Therefore we conducted a multi-center randomized controlled trial. OBJECTIVE: To determine the efficacy of music therapy in comparison with recreational therapy in improving quality of life of patients with advanced Huntington's disease by means of improving communication...
March 15, 2017: Journal of Huntington's Disease
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