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https://www.readbyqxmd.com/read/28918607/modeling-the-ph-and-temperature-dependence-of-aqueousphase-hydroxyl-radical-reaction-rate-constants-of-organic-micropollutants-using-qspr-approach
#1
Shikha Gupta, Nikita Basant
Designing of advanced oxidation process (AOP) requires knowledge of the aqueous phase hydroxyl radical ((●)OH) reactions rate constants (k OH), which are strictly dependent upon the pH and temperature of the medium. In this study, pH- and temperature-dependent quantitative structure-property relationship (QSPR) models based on the decision tree boost (DTB) approach were developed for the prediction of k OH of diverse organic contaminants following the OECD guidelines. Experimental datasets (n = 958) pertaining to the k OH values of aqueous phase reactions at different pH (n = 470; 1...
September 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28918585/prevalence-and-risk-factors-for-intestinal-carriage-of-ctx-m-type-esbls-in-enterobacteriaceae-from-a-thai-community
#2
P R Niumsup, U Tansawai, A Na-Udom, D Jantapalaboon, K Assawatheptawee, A Kiddee, T Romgaew, S Lamlertthon, T R Walsh
The incidence of infections caused by antimicrobial-resistant Enterobacteriaceae in Thailand is increasing and human intestinal flora is an important reservoir for these organisms. This study was carried out to determine the intestinal carriage of bla CTX-M extended spectrum ß-lactamase-positive Enterobacteriaceae (ESBL + E) and AmpC-positive Enterobacteriaceae in a community setting in Northern Thailand, and to identify potential risk factors for carriage. A total of 307 fecal samples were collected from healthy volunteers in Phitsanulok province, and cefotaxime-resistant Enterobacteriaceae (CtxRE) were isolated using selective media...
September 16, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28918576/effect-of-heat-stress-on-rumen-temperature-of-three-breeds-of-cattle
#3
A M Lees, J C Lees, A T Lisle, M L Sullivan, J B Gaughan
Thirty-six steers (12 of each Angus, Charolais, and Brahman) with an initial BW of 318.5 ± 6.7 kg were used in a 130-day study. Two treatments were imposed: un-shaded and shaded (3 m(2)/animal; 90% solar block shade cloth). On day 1, steers were administered with rumen temperature boluses. Rumen temperatures (T RUM) were obtained at 10 min intervals over the duration of the study to determine differences in T RUM between Bos indicus and Bos taurus cattle. Six feedlot pens (162 m(2)) were used with six steers (2/breed) per pen with three pens/treatment...
September 16, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28918575/optimum-spacing-between-electrodes-in-an-air-cathode-single-chamber-microbial-fuel-cell-with-a-low-cost-polypropylene-separator
#4
Sanath Kondaveeti, Jung Mi Moon, Booki Min
The performance of a single chamber microbial fuel cell (MFC) with a low-cost polypropylene separator was investigated at various electrode interspaces in a separator electrode assembly (SEA). The lag period was shortened (3.74-0.17 days) and voltage generation was enhanced (0.2-0.5 V) as electrode spacing was increased from 0 to 9 mm. Power density was increased from 220 to 370 mW/m(2) with increased spacing. The highest power density of 488 mW/m(2) was obtained in polarization analysis with 6 mm. The oxygen mass transfer coefficients with 0 mm (K o = 3...
September 16, 2017: Bioprocess and Biosystems Engineering
https://www.readbyqxmd.com/read/28918547/adaptive-step-goals-and-rewards-a-longitudinal-growth-model-of-daily-steps-for-a-smartphone-based-walking-intervention
#5
Elizabeth V Korinek, Sayali S Phatak, Cesar A Martin, Mohammad T Freigoun, Daniel E Rivera, Marc A Adams, Pedja Klasnja, Matthew P Buman, Eric B Hekler
Adaptive interventions are an emerging class of behavioral interventions that allow for individualized tailoring of intervention components over time to a person's evolving needs. The purpose of this study was to evaluate an adaptive step goal + reward intervention, grounded in Social Cognitive Theory delivered via a smartphone application (Just Walk), using a mixed modeling approach. Participants (N = 20) were overweight (mean BMI = 33.8 ± 6.82 kg/m(2)), sedentary adults (90% female) interested in participating in a 14-week walking intervention...
September 16, 2017: Journal of Behavioral Medicine
https://www.readbyqxmd.com/read/28918530/exogenous-and-endogenous-increase-in-fungal-ggpp-increased-fungal-taxol-production
#6
Sameh S M Soliman, Kareem A Mosa, Ali A El-Keblawy, Mohamed I Husseiny
Taxol is an anticancer identified in both endophytic fungus and its host plant. Plant Taxol is a diterpenoid with geranylgeranyl diphosphate (GGPP) mediates the biosynthesis of its terpenoid moiety. Previous report has suggested that fungal Taxol may require terpenoid pathway for its biosynthesis. Here in this study, feeding a Taxol-producing endophytic fungus (Paraconiothyrium SSM001) with terpenoid precursors including isopentenyl pyrophosphate (IPP, isoprene) and GGPP enhanced Taxol production threefold and fivefold, respectively, compared to the control...
September 16, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28918529/anatomic-repair-of-congenitally-corrected-transposition-of-the-great-arteries-single-center-intermediate-term-experience
#7
Shagun Sachdeva, Roni M Jacobsen, Ronald K Woods, Michael E Mitchell, Joseph R Cava, Nancy S Ghanayem, Peter C Frommelt, Peter J Bartz, James S Tweddell
We present our experience for patients who have undergone an anatomic repair (AR) for congenitally corrected transposition of the great arteries (CCTGA) at the Children's Hospital of Wisconsin. A retrospective chart review of patients who underwent AR for CCTGA from 2001 to 2015 was performed. The cohort consisted of 15 patients (74% male). Median age of anatomic repair was 15 months (range 4.5-45.6 months). Four patients had a bidirectional Glenn (BDG) prior to AR. At the time of AR,-9 (60%) underwent Senning/Rastelli procedure, 4 (26...
September 16, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28918510/acquired-hepatocerebral-degeneration-ahd-a-peculiar-neurological-impairment-in-advanced-chronic-liver-disease
#8
A Pigoni, F Iuculano, C Saetti, L Airaghi, L Burdick, S Spreafico, M Curioni, R Lombardi, L Valenti, A L Fracanzani, S Fargion
We discuss the case of a rare and often unrecognized neurologic syndrome, called Acquired Hepatocerebral Degeneration (AHD), observed in patients with advanced liver disease and portosystemic shunts. The clinical manifestations can be very heterogeneous and in our case included a combination of cerebellar and extrapyramidal signs, arisen in a period of few days. Brain Magnetic Resonance Imaging (MRI) showed, in T1-weighted images, diffuse bilateral hyper intensities in basal ganglia and biemispheric brain and cerebellar cortices, resembling paramagnetic deposits...
September 16, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28918500/current-evidence-advocates-use-of-a-new-pathologic-tibial-tubercle-posterior-cruciate-ligament-distance-threshold-in-patients-with-patellar-instability
#9
REVIEW
Nickolas Boutris, Domenica A Delgado, John S Labis, Patrick C McCulloch, David M Lintner, Joshua D Harris
PURPOSE: To determine (1) whether a correlation exists between tibial tubercle-posterior cruciate ligament (TT-PCL) and tibial tubercle-trochlear groove (TT-TG) distances in patellar instability patients; (2) reliability when measuring TT-PCL distance; (3) whether TT-PCL distances measured on MRI are equivalent to those on CT; and (4) whether a correlation exists between TT-PCL distance and number of instability events or recurrence of instability following stabilization surgery. METHODS: A systematic review was performed using PRISMA guidelines...
September 16, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28918472/a-reliable-protocol-for-colorimetric-determination-of-iron-oxide-nanoparticle-uptake-by-cells
#10
Daiana K Deda, Roberta M Cardoso, Mayara K Uchiyama, Christiane Pavani, Sergio H Toma, Mauricio S Baptista, Koiti Araki
Size, shape, and surface properties of superparamagnetic iron oxide nanoparticles (SPIONs) can influence their interaction with biological systems, particularly the incorporation by tumor cells and consequently the biological activity and efficiency in biomedical applications. Several strategies have been used to evaluate cellular uptake of SPIONs. While qualitative methods are generally based on microscopy techniques, quantitative assays are carried out by techniques such as inductively coupled plasma-mass spectrometry and flow cytometry...
September 16, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28918468/constraints-affecting-dairy-goats-milk-production-in-kenya
#11
C M Mbindyo, C G Gitao, S G Peter
In Kenya, the population of dairy goats is about 200,000 and 80% of these are reared in Mount Kenya region. They provide a quick source of milk for consumption or sale, which has an immense value especially to poor households. The small land sizes required for their rearing are especially useful in these highly populated areas. Although much research has been done on problems faced by dairy cattle farmers, limited information is available on problems faced by dairy goat farmers. Therefore, the objective of this study was to determine the constraints affecting dairy goat production in Mount Kenya region...
September 16, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28918433/procalcitonin-and-c-reactive-protein-as-early-markers-of-postoperative-intra-abdominal-infection-in-patients-operated-on-colorectal-cancer
#12
E Domínguez-Comesaña, S M Estevez-Fernández, V López-Gómez, J Ballinas-Miranda, R Domínguez-Fernández
PURPOSE: The aim of this study was to evaluate the accuracy of serum procalcitonin (PCT) and C-reactive protein (CRP) for early diagnosis of postoperative intra-abdominal infections (PIAI) after elective surgery for colorectal cancer. METHODS: Prospective observational study including patients operated on for colorectal cancer between January and December of 2015 was performed. Serum PCT and CRP levels were measured before surgery and daily until postoperative day 3...
September 16, 2017: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/28918393/improving-membrane-protein-expression-by-optimizing-integration-efficiency
#13
Michiel J M Niesen, Stephen S Marshall, Thomas F Miller, William M Clemons
The heterologous overexpression of integral membrane proteins in Escherichia coli often yields insufficient quantities of purifiable protein for applications of interest. The current study leverages a recently demonstrated link between co-translational membrane integration efficiency and protein expression levels to predict protein sequence modifications that improve expression. Membrane integration efficiencies, obtained using a coarse-grained simulation approach, robustly predicted effects on expression of the integral membrane protein TatC for a set of 140 sequence modifications, including loop-swap chimeras and single-residue mutations distributed throughout the protein sequence...
September 16, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28918386/evaluation-of-previously-embolized-intracranial-aneurysms-inter-and-intra-rater-reliability-among-neurosurgeons-and-interventional-neuroradiologists
#14
Scott L Zuckerman, Nikita Lakomkin, Jordan A Magarik, Jan Vargas, Marcus Stephens, Babatunde Akinpelu, Alejandro M Spiotta, Azam Ahmed, Adam S Arthur, David Fiorella, Ricardo Hanel, Joshua A Hirsch, Ferdinand K Hui, Robert F James, David F Kallmes, Philip M Meyers, David B Niemann, Peter Rasmussen, Raymond D Turner, Babu G Welch, J Mocco
BACKGROUND: The angiographic evaluation of previously coiled aneurysms can be difficult yet remains critical for determining re-treatment. OBJECTIVE: The main objective of this study was to determine the inter-rater reliability for both the Raymond Scale and per cent embolization among a group of neurointerventionalists evaluating previously embolized aneurysms. METHODS: A panel of 15 neurointerventionalists examined 92 distinct cases of immediate post-coil embolization and 1 year post-embolization angiographs...
September 16, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28918349/inhibition-of-anaerobic-digestion-processes-applications-of-molecular-tools
#15
REVIEW
Yamrot M Amha, Muhammad Zohaib Anwar, Andrew Brower, Carsten S Jacobsen, Lauren B Stadler, Tara M Webster, Adam L Smith
Inhibition of anaerobic digestion (AD) due to perturbation caused by substrate composition and/or operating conditions can significantly reduce performance. Such perturbations could be limited by elucidating microbial community response to inhibitors and devising strategies to increase community resilience. To this end, advanced molecular methods are increasingly being applied to study the AD microbiome, a diverse community of microbial populations with complex interactions. This literature review of AD inhibition studies indicates that inhibitory concentrations are highly variable, likely stemming from differences in community structure or activity profile and previous exposure to inhibitors...
September 4, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28918318/high-sensitivity-method-validated-to-quantify-estradiol-in-human-plasma-by-lc-ms-ms
#16
Mônica Siqueira Ferreira, André M M Arruda, Giovanni Tieghi Pepi, Aline Cristina Martho, Pâmela Maria Maximiano, Lina S O B O Ricci, Maria Francesca Riccio, Ana Cláudia Noboli, Pedro Serafim
17β-Estradiol (E2) is an endogenous steroid in the human body. Its measurement is important for health and human biology understanding. However, E2 concentration in human plasma is in the range of pg/mL, which makes it difficult to detect. In this way, LC-MS/MS has been shown the most sensitive tool, although E2 is a weakly ionizable molecule. In this work, we validated a more sensitive and accurate method for E2 quantification in human plasma. Our extraction step ensured a cleaner chromatography, resulting in a precise measurement and highly reproducible method in the range of 2-150pg/mL...
September 5, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28918287/steroid-hormones-and-persistent-organic-pollutants-in-plasma-from-north-eastern-atlantic-pilot-whales
#17
Katrin S Hoydal, Bjarne Styrishave, Tomasz M Ciesielski, Robert J Letcher, Maria Dam, Bjørn M Jenssen
Persistent organic pollutants (POPs) are known to have endocrine disruptive effects, interfering with endogenous steroid hormones. The present study examined nine steroid hormones and their relationships with the concentrations of selected POPs in pilot whales (Globicephala melas) from the Faroe Islands, NE Atlantic. The different steroids were detected in 15 to all of the 26 individuals. High concentrations of progesterone (83.3-211.7pmol/g) and pregnenolone (PRE; 4.68-5.69pmol/g) were found in three adult females indicating that they were pregnant or ovulating...
September 14, 2017: Environmental Research
https://www.readbyqxmd.com/read/28918279/seasonal-variation-of-chloro-s-triazines-in-the-hartbeespoort-dam-catchment-south-africa
#18
Cornelius Rimayi, David Odusanya, Jana M Weiss, Jacob de Boer, Luke Chimuka
Seasonal variation of eight chloro-s-triazine herbicides and seven major atrazine and terbuthylazine degradation products was monitored in the Hartbeespoort Dam catchment using gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-mass spectrometry (LC-MS/MS). Lake, river and groundwater were sampled from the Hartbeespoort Dam catchment over four seasons and the downstream Jukskei River was monitored during the winter season. Triazine herbicide concentrations in the Hartbeespoort Dam were in the order atrazine>simazine>propazine>ametryn>prometryn throughout the four seasons sampled...
September 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28918274/distribution-comparison-and-risk-assessment-of-free-floating-and-particle-attached-bacterial-pathogens-in-urban-recreational-water-implications-for-water-quality-management
#19
Tingting Fang, Qijia Cui, Yong Huang, Peiyan Dong, Hui Wang, Wen-Tso Liu, Quanhui Ye
The risk of pathogen exposure in recreational water is a concern worldwide. Moreover, suspended particles, as ideal shelters for pathogens, in these waters also need attention. However, the risk caused by the pathogen-particle attachment is largely unknown. Accordingly, water samples in three recreational lakes in Beijing were collected and separated into free-floating (FL, 0.22-5μm) and particle-attached (PA, >5μm) fractions. Next-generation sequencing (NGS) was employed to determine the diversity of genera containing pathogens, and quantitative PCR (qPCR) was used to assess the presence of genes from Escherichia coli (uidA), Salmonella enterica (invA), Aeromonas spp...
September 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28918272/impact-of-reduced-mass-of-light-commercial-vehicles-on-fuel-consumption-co2-emissions-air-quality-and-socio-economic-costs
#20
S Cecchel, D Chindamo, E Turrini, C Carnevale, G Cornacchia, M Gadola, A Panvini, M Volta, D Ferrario, R Golimbioschi
This study presents a modelling system to evaluate the impact of weight reduction in light commercial vehicles with diesel engines on air quality and greenhouse gas emissions. The PROPS model assesses the emissions of one vehicle in the aforementioned category and its corresponding reduced-weight version. The results serve as an input to the RIAT+ tool, an air quality integrated assessment modelling system. This paper applies the tools in a case study in the Lombardy region (Italy) and discusses the input data pre-processing, the PROPS-RIAT+ modelling system runs, and the results...
September 14, 2017: Science of the Total Environment
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