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https://www.readbyqxmd.com/read/29107783/pbt-assessment-under-reach-screening-for-low-aquatic-bioaccumulation-with-qsar-classifications-based-on-physicochemical-properties-to-replace-bcf-in-vivo-testing-on-fish
#1
Monika Nendza, Ralph Kühne, Anna Lombardo, Sebastian Strempel, Gerrit Schüürmann
Aquatic bioconcentration factors (BCFs) are critical in PBT (persistent, bioaccumulative, toxic) and risk assessment of chemicals. High costs and use of more than 100 fish per standard BCF study (OECD 305) call for alternative methods to replace as much in vivo testing as possible. The BCF waiving scheme is a screening tool combining QSAR classifications based on physicochemical properties related to the distribution (hydrophobicity, ionisation), persistence (biodegradability, hydrolysis), solubility and volatility (Henry's law constant) of substances in water bodies and aquatic biota to predict substances with low aquatic bioaccumulation (nonB, BCF<2000)...
November 3, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29059478/does-water-temperature-influence-the-performance-of-key-survival-skills
#2
Christophe Schnitzler, Chris Button, Ludovic Seifert, Geoffrey Armbrust, James L Croft
PURPOSE: Aquatic survival skills may be compromised in cold water thereby increasing the likelihood of drowning. This study compared physiological, psychological, and behavioural responses of humans treading water and swimming in cold and temperate water. METHODS: Thirty-eight participants were classified as inexperienced (n=9), recreational (n=15), or skilled (n=10) swimmers. They performed three tasks: treading water (120 s), swim at "comfortable" pace, and swim at "fast" pace in two water conditions (28 °C vs 10 °C)...
October 23, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28994755/foodborne-pathogen-screening-using-magneto-fluorescent-nanosensor-rapid-detection-of-e-coli-o157-h7
#3
Tyler Shelby, Shoukath Sulthana, James McAfee, Tuhina Banerjee, Santimukul Santra
Enterohemorrhagic Escherichia coli O157:H7 has been linked to both waterborne and foodborne illnesses, and remains a threat despite the food- and water-screening methods used currently. While conventional bacterial detection methods, such as polymerase chain reaction (PCR) and enzyme-linked immunosorbent assays (ELISA) can specifically detect pathogenic contaminants, they require extensive sample preparation and lengthy waiting periods. In addition, these practices demand sophisticated laboratory instruments and settings, and must be executed by trained professionals...
September 17, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28987900/cardiorespiratory-responses-to-pool-floor-walking-in-people-post-stroke
#4
Brenda Jeng, Takuto Fujii, Hyosok Lim, Konstantinos Vrongistinos, Taeyou Jung
OBJECTIVE: To compare energy expenditure between pool floor walking (PFW) and overground walking (OW) in people post-stroke. DESIGN: Cross-sectional study. SETTING: University-based therapeutic exercise facility. PARTICIPANTS: 14 community-dwelling individuals post-stroke (5.57±3.57 years post-stroke) and 14 healthy adults, age- and gender-matched (aged 58.00±15.51, men to women ratio of 9:5) participated in the study...
October 5, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28965294/modeling-of-yield-and-environmental-impact-categories-in-tea-processing-units-based-on-artificial-neural-networks
#5
Majid Khanali, Hossein Mobli, Homa Hosseinzadeh-Bandbafha
In this study, an artificial neural network (ANN) model was developed for predicting the yield and life cycle environmental impacts based on energy inputs required in processing of black tea, green tea, and oolong tea in Guilan province of Iran. A life cycle assessment (LCA) approach was used to investigate the environmental impact categories of processed tea based on the cradle to gate approach, i.e., from production of input materials using raw materials to the gate of tea processing units, i.e., packaged tea...
September 30, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28957760/comprehensive-evaluation-of-three-sets-of-advanced-wastewater-treatment-trains-for-treating-secondary-effluent-organic-micro-pollutants-and-bio-toxicity
#6
Zhiqiang Chen, Mo Li, Qinxue Wen
The environmental presence of organic micro-pollutants (OMPs) has posed increasing risks on aquatic organism and human health. The performance of three commonly used advanced wastewater treatment trains, coagulation-sand filter, coagulation-biological aerated filter (BAF) and ozonation-biological activated carbon (BAC), in removing fifteen residual contaminants and bio-toxicity of the effluent from a local municipal wastewater treatment plant (WWTP) were investigated. Relatively high level of OMPs (0.69-14...
September 20, 2017: Chemosphere
https://www.readbyqxmd.com/read/28935128/quality-of-life-and-sleep-quality-are-similarly-improved-after-aquatic-or-dry-land-aerobic-training-in-patients-with-type-2-diabetes-a-randomized-clinical-trial
#7
Rodrigo S Delevatti, Felipe Barreto Schuch, Ana Carolina Kanitz, Cristine L Alberton, Elisa Corrêa Marson, Salime Chedid Lisboa, Carolina Dertzbocher Feil Pinho, Luciana Peruchena Bregagnol, Maríndia Teixeira Becker, Luiz Fernando M Kruel
OBJECTIVES: To compare the effects of two aerobic training models in water and on dry-land on quality of life, depressive symptoms and sleep quality in patients with type 2 diabetes. DESIGN: Randomized clinical trial. METHODS: Thirty-five patients with type 2 diabetes were randomly assigned to aquatic aerobic training group (n=17) or dry-land aerobic training group (n=18). Exercise training length was of 12 weeks, performed in three weekly sessions (45min/session), with intensity progressing from 85% to 100% of heart rate of anaerobic threshold during interventions...
September 6, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28933714/hr-%C3%AC-v-775-o-8322-and-rpe-relationships-in-an-aquatic-incremental-maximum-test-performed-by-young-women
#8
Gabriela B David, Luana S Andrade, Gustavo Z Schaun, Cristine L Alberton
David, GB, Andrade, LS, Schaun, GZ, and Alberton, CL. HR, V̇O₂, and RPE relationships in an aquatic incremental maximum test performed by young women. J Strength Cond Res 31(10): 2852-2858, 2017-The purpose of the study was to verify the relationship between oxygen uptake (V̇O₂), heart rate (HR), rate of perceived exertion (RPE), and cadence (CAD) in an aquatic incremental maximum test performed during a water-based stationary running exercise. The study also verified the best adjustments for these relationships (linear or polynomial)...
October 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28923661/the-influence-of-the-aquatic-environment-on-the-center-of-pressure-impulses-and-upper-and-lower-trunk-accelerations-during-gait-initiation
#9
Andresa R Marinho-Buzelli, Kei Masani, Hossein Rouhani, Ana M Barela, Gustavo T B Fernandes, Mary C Verrier, Milos R Popovic
Gait initiation is defined as the transition from stationary standing to steady-state walking. Despite the frequent use of therapy pools for training walking in early stages of rehabilitation, none have been reported on the effects of immersion on gait initiation. We aimed to analyze the center of pressure (COP) trajectories, the vertical and anteroposterior impulses and upper and lower trunk accelerations during anticipatory (APA) and execution phases of gait initiation. In the COP trajectory, the execution (EXE) phase was further subdivided in two phases: predominantly mediolateral (EXE1), and predominantly anteroposterior (EXE2)...
October 2017: Gait & Posture
https://www.readbyqxmd.com/read/28872129/bottlenose-dolphin-tursiops-truncatus-spermatozoa-collection-cryopreservation-and-heterologous-in-vitro-fertilization
#10
María Jesús Sánchez-Calabuig, Francisco Alberto García-Vázquez, Ricardo Laguna-Barraza, Carlos Barros-García, Daniel García-Parraga, Dimitrios Rizos, Alfonso Gutiérrez Adan, José Félix Pérez-Gutíerrez
The use of cryopreserved dolphin spermatozoa facilitates the exchange of genetic material between aquatic parks and makes spermatozoa accessible to laboratories for studies to further our understanding of marine mammal reproduction. Heterologous IVF, a replacement for homologous IVF, could provide a means to test the sperm fertility potential; to study gamete physiology and early embryo development; and to avoid the use of valuable dolphin oocytes, which are difficult to obtain. Here, we present protocols that have been successfully used to collect and cryopreserve dolphin spermatozoa...
August 21, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28865866/postexercise-hypotension-during-different-water-based-concurrent-training-intrasession-sequences-in%C3%A2-young-women
#11
Stephanie Santana Pinto, Daniel Umpierre, Hector Kerchirne Ferreira, Gabriela Neves Nunes, Rodrigo Ferrari, Cristine Lima Alberton
The purpose of the study was to compare the acute effects of water-based resistance-aerobic (RA) and aerobic-resistance (AR) sequences on systolic blood pressure, diastolic blood pressure (DBP), and mean blood pressure (MBP) in young women. Thirteen active women participated in four sessions: (1) exercises familiarization, (2) aquatic maximal test to determine the heart rate (HR) corresponding to the anaerobic threshold (HRAT), (3) concurrent protocol RA, and (4) concurrent protocol AR. Both protocols were initiated with the blood pressure measurements at rest in supine position...
August 24, 2017: Journal of the American Society of Hypertension: JASH
https://www.readbyqxmd.com/read/28854482/applying-high-frequency-surrogate-measurements-and-a-wavelet-ann-model-to-provide-early-warnings-of-rapid-surface-water-quality-anomalies
#12
Bin Shi, Peng Wang, Jiping Jiang, Rentao Liu
It is critical for surface water management systems to provide early warnings of abrupt, large variations in water quality, which likely indicate the occurrence of spill incidents. In this study, a combined approach integrating a wavelet artificial neural network (wavelet-ANN) model and high-frequency surrogate measurements is proposed as a method of water quality anomaly detection and warning provision. High-frequency time series of major water quality indexes (TN, TP, COD, etc.) were produced via a regression-based surrogate model...
January 1, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/28825604/effects-of-dry-land-strength-and-conditioning-programs-in-age-group-swimmers
#13
Nuno M Amaro, Daniel A Marinho, Mário C Marques, Nuno P Batalha, Pedro G Morouço
Amaro, NM, Marinho, DA, Marques, MC, Batalha, N, and Morouço, PG. Effects of dry-land strength and conditioning programs in age group swimmers. J Strength Cond Res 31(9): 2447-2454, 2017-Even though dry-land S&C training is a common practice in the context of swimming, there are countless uncertainties over its effects in performance of age group swimmers. The objective was to investigate the effects of dry-land S&C programs in swimming performance of age group swimmers. A total of 21 male competitive swimmers (12...
September 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28801886/effects-of-3-nitro-1-2-4-triazol-5-one-on-survival-growth-and-metamorphosis-in-the-northern-leopard-frog-lithobates-pipiens
#14
David A Pillard, William S Eck, Mark S Johnson, Stephanie Packard
New explosive formulations are being developed to be less sensitive to impact and inadvertent explosion, increasing safety for the warfighter. Since testing and training make environmental releases imminent, the toxicity of 3-nitro-1,2,4-triazol-5-one (NTO), a component of Insensitive Munitions eXplosive (IMX) formulations, was assessed in a one-generation study to the northern leopard frog (Lithobates ( = Rana) pipiens). Because NTO in water creates acidic conditions, acute studies were conducted with non-pH-adjusted NTO, while a long-term (70-d) study was conducted with neutralized NTO...
November 2017: Ecotoxicology
https://www.readbyqxmd.com/read/28779920/short-term-water-based-aerobic-training-promotes-improvements-in-aerobic-conditioning-parameters-of-mature-women
#15
Rochelle Rocha Costa, Thais Reichert, Leandro Coconcelli, Nicole Monticelli Simmer, Natália Carvalho Bagatini, Adriana Cristine Koch Buttelli, Cláudia Gomes Bracht, Ricardo Stein, Luiz Fernando Martins Kruel
Aging is accompanied by a decrease in aerobic capacity. Therefore, physical training has been recommended to soften the effects of advancement age. The aim of this study was to assess the effects of a short-term water-based aerobic training on resting heart rate (HRrest), heart rate corresponding to anaerobic threshold (HRAT), peak heart rate (HRpeak), percentage value of HRAT in relation to HRpeak and test duration (TD) of mature women. Twenty-two women (65.91 ± 4.83 years) were submitted to a five-week water-based interval aerobic training...
August 2017: Complementary Therapies in Clinical Practice
https://www.readbyqxmd.com/read/28767683/quantifying-kinematic-differences-between-land-and-water-during-squats-split-squats-and-single-leg-squats-in-a-healthy-population
#16
COMPARATIVE STUDY
Anna C Severin, Brendan J Burkett, Mark R McKean, Aaron N Wiegand, Mark G L Sayers
Aquatic exercises can be used in clinical and sporting disciplines for both rehabilitation and sports training. However, there is limited knowledge on the influence of water immersion on the kinematics of exercises commonly used in rehabilitation and fitness programs. The aim of this study was to use inertial sensors to quantify differences in kinematics and movement variability of bodyweight squats, split squats, and single-leg squats performed on dry land and whilst immersed to the level of the greater trochanter...
2017: PloS One
https://www.readbyqxmd.com/read/28758074/efficacy-of-aquatic-treadmill-training-on-gait-symmetry-and-balance-in-subacute-stroke-patients
#17
Mi Eun Lee, Geun Yeol Jo, Hwan Kwon Do, Hee Eun Choi, Woo Jin Kim
OBJECTIVE: To determine the efficacy of aquatic treadmill training (ATT) as a new modality for stroke rehabilitation, by assessing changes in gait symmetry, balance function, and subjective balance confidence for the paretic and non-paretic leg in stroke patients. METHODS: Twenty-one subacute stroke patients participated in 15 intervention sessions of aquatic treadmill training. The Comfortable 10-Meter Walk Test (CWT), spatiotemporal gait parameters, Berg Balance Scale (BBS), and Activities-specific Balance Confidence scale (ABC) were assessed pre- and post-interventions...
June 2017: Annals of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28735720/randomized-controlled-trial-to-examine-the-impact-of-aquatic-exercise-training-on-functional-capacity-balance-and-perceptions-of-fatigue-in-female-patients-with-multiple-sclerosis
#18
Mehdi Kargarfard, Ardalan Shariat, Lee Ingle, Joshua A Cleland, Mina Kargarfard
OBJECTIVE: To assess the effects of an 8-week aquatic exercise training program on functional capacity, balance, and perceptions of fatigue in women with multiple sclerosis (MS). DESIGN: Randomized controlled design. SETTING: Referral center of an MS society. PARTICIPANTS: Women (N=32; mean age ± SD, 36.4±8.2y) with diagnosed relapsing-remitting MS. After undergoing baseline testing by a neurologist, participants were allocated to either an intervention (aquatic training program, n=17) or a control group (n=15)...
July 20, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28712030/predictive-modelling-of-eutrophication-in-the-poz%C3%A3-n-de-la-dolores-lake-northern-spain-by-using-an-evolutionary-support-vector-machines-approach
#19
P J García-Nieto, E García-Gonzalo, J R Alonso Fernández, C Díaz Muñiz
Eutrophication is a water enrichment in nutrients (mainly phosphorus) that generally leads to symptomatic changes and deterioration of water quality and all its uses in general, when the production of algae and other aquatic vegetations are increased. In this sense, eutrophication has caused a variety of impacts, such as high levels of Chlorophyll a (Chl-a). Consequently, anticipate its presence is a matter of importance to prevent future risks. The aim of this study was to obtain a predictive model able to perform an early detection of the eutrophication in water bodies such as lakes...
July 15, 2017: Journal of Mathematical Biology
https://www.readbyqxmd.com/read/28704390/inter-rater-reliability-of-categorical-versus-continuous-scoring-of-fish-vitality-does-it-affect-the-utility-of-the-reflex-action-mortality-predictor-ramp-approach
#20
Pieter Meeremans, Noëlle Yochum, Marc Kochzius, Bart Ampe, Frank A M Tuyttens, Sven Sebastian Uhlmann
Scoring reflex responsiveness and injury of aquatic organisms has gained popularity as predictors of discard survival. Given this method relies upon the individual interpretation of scoring criteria, an evaluation of its robustness is done here to test whether protocol-instructed, multiple raters with diverse backgrounds (research scientist, technician, and student) are able to produce similar or the same reflex and injury score for one of the same flatfish (European plaice, Pleuronectes platessa) after experiencing commercial fishing stressors...
2017: PloS One
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