keyword
MENU ▼
Read by QxMD icon Read
search

Operating

keyword
https://www.readbyqxmd.com/read/29793208/enhanced-phosphate-removal-from-wastewater-by-using-in-situ-generated-fresh-trivalent-fe-composition-through-the-interaction-of-fe-ii-on-caco-3
#1
Yujie Li, Xiaoman He, Huimin Hu, Tingting Zhang, Jun Qu, Qiwu Zhang
Excessive existences of nutrients such as phosphate in the aqueous environment remain as a heavy concern although many researches have been reported for dealing with their removal. Based on the understanding toward the interactions of Fe compounds with phosphate and carbonate from many available researches, we designed a very simple and efficient approach for phosphate removal by using in situ generated fresh trivalent Fe composition through the interaction of Fe(II) as FeSO4 on CaCO3 . Addition and agitation of Fe(II) and CaCO3 simultaneously to phosphate solution allowed an amorphous Fe(III)-P or Ca-Fe(III)-P precipitation, with a phosphate removal rate close to 100%, to reduce the residual phosphorus concentration less than 0...
May 21, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29793193/a-validation-study-of-the-1-2-indandione-reagent-for-operational-use-in-the-uk-part-2-optimization-of-processing-conditions
#2
Niko Nicolasora, Rory Downham, Rachel-May Dyer, Laura Hussey, Aoife Luscombe, Vaughn Sears
This paper contains details of work carried out to identify the most effective processing conditions for the optimized 1,2-indandione/zn formulation developed for use under UK conditions. Using direct measurements of fluorescence taken from test spots of amino acids and eccrine sweat during oven processing, complemented with experiments on real fingermarks, it was established that processing temperatures above 120°C in the oven were detrimental to the fluorescence of the developed mark. Alternative methods of development to oven processing were found to be effective, but less controllable...
May 2, 2018: Forensic Science International
https://www.readbyqxmd.com/read/29793188/prioritization-of-reproductive-toxicants-in-unconventional-oil-and-gas-operations-using-a-multi-country-regulatory-data-driven-hazard-assessment
#3
Salmaan H Inayat-Hussain, Masao Fukumura, A Muiz Aziz, Chai Meng Jin, Low Wei Jin, Rolando Garcia-Milian, Vasilis Vasiliou, Nicole C Deziel
BACKGROUND: Recent trends have witnessed the global growth of unconventional oil and gas (UOG) production. Epidemiologic studies have suggested associations between proximity to UOG operations with increased adverse birth outcomes and cancer, though specific potential etiologic agents have not yet been identified. To perform effective risk assessment of chemicals used in UOG production, the first step of hazard identification followed by prioritization specifically for reproductive toxicity, carcinogenicity and mutagenicity is crucial in an evidence-based risk assessment approach...
May 21, 2018: Environment International
https://www.readbyqxmd.com/read/29793186/excess-sludge-disruption-and-pollutant-removal-from-tannery-effluent-by-upgraded-activated-sludge-system
#4
Vijay Sodhi, Ajay Bansal, Mithilesh Kumar Jha
This study proposed a maintenance metabolism based upgraded activated sludge as MANODOX system that restricts excess biosludge generation from high strength real tannery effluent. The MANODOX experimental demonstration has been done using a sequenced operational arrangement of a MBBR, anaerobic digester, and oxidation ditch connected to CAS reactor, discussed in detail manner. Experimental trends revealed a prominently lower sludge yield upto 0.271 gVSS/gCOD (72% overall sludge reduction) that corresponds to parallel run CAS (0...
April 30, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29793181/exogenously-applied-spermidine-alleviates-photosynthetic-inhibition-under-drought-stress-in-maize-zea-mays-l-seedlings-associated-with-changes-in-endogenous-polyamines-and-phytohormones
#5
Lijie Li, Wanrong Gu, Jing Li, Congfeng Li, Tenglong Xie, Danyang Qu, Yao Meng, Caifeng Li, Shi Wei
Drought stress (DS) is a major environmental factor limiting plant growth and crop productivity worldwide. It has been established that exogenous spermidine (Spd) stimulates plant tolerance to DS. The effects of exogenous Spd on plant growth, photosynthetic performance, and chloroplast ultrastructure as well as changes in endogenous polyamines (PAs) and phytohormones were investigate in DS-resistant (Xianyu 335) and DS-sensitive (Fenghe 1) maize seedlings under well-watered and DS treatments. Exogenous Spd alleviated the stress-induced reduction in growth, photosynthetic pigment content, photosynthesis rate (Pn ) and photochemical quenching (qP ) parameters, including the maximum photochemistry efficiency of photosystem II (PSII) (Fv /Fm ), PSII operating efficiency (ФPSII), and qP coefficient...
May 15, 2018: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29793175/apolipoprotein-ciii-and-n-terminal-prohormone-b-type-natriuretic-peptide-as-independent-predictors-for-cardiovascular-disease-in-type-2-diabetes
#6
Marco Colombo, Helen C Looker, Bassam Farran, Felix Agakov, M Julia Brosnan, Paul Welsh, Naveed Sattar, Shona Livingstone, Paul N Durrington, D John Betteridge, Paul M McKeigue, Helen M Colhoun
BACKGROUND AND AIMS: Developing sparse panels of biomarkers for cardiovascular disease in type 2 diabetes would enable risk stratification for clinical decision making and selection into clinical trials. We examined the individual and joint performance of five candidate biomarkers for incident cardiovascular disease (CVD) in type 2 diabetes that an earlier discovery study had yielded. METHODS: Apolipoprotein CIII (apoCIII), N-terminal prohormone B-type natriuretic peptide (NT-proBNP), high sensitivity Troponin T (hsTnT), Interleukin-6, and Interleukin-15 were measured in baseline serum samples from the Collaborative Atorvastatin Diabetes trial (CARDS) of atorvastatin versus placebo...
May 21, 2018: Atherosclerosis
https://www.readbyqxmd.com/read/29793140/effectiveness-of-a-voluntary-family-befriending-service-a-mixed-methods-evaluation-using-the-donabedian-model
#7
S V Gentry, E F J Powers, N Azim, M Maidrag
OBJECTIVES: Voluntary befriending schemes operate in many countries, promoting public health by supporting vulnerable individuals and families. Use of third sector and voluntary services to complement health and social care provision is increasingly important globally in the context of economic and demographic challenges, but the evidence base around such collaborations is limited. This article reports the results of operational evaluation research seeking to use robust routine work to generate transferable findings for use by those commissioning and providing services...
May 21, 2018: Public Health
https://www.readbyqxmd.com/read/29793139/the-use-of-low-intensity-pulsed-ultrasound-in-treating-delayed-union-of-fifth-metatarsal-fractures
#8
Kar Hao Teoh, Robert Whitham, Jenny F Wong, Kartik Hariharan
BACKGROUND: There are no studies looking at the success rate of low-intensity pulsed ultrasound (LIPUS) in fifth metatarsal fracture delayed unions to our knowledge. The aim of this study is to investigate the use of LIPUS treatment for delayed union of fifth metatarsal fractures. METHODS: A retrospective review of patients who were treated with LIPUS following a delayed union of fifth metatarsal fracture was conducted over a three-year period. RESULTS: There were thirty patients (9 males, 21 females) in this cohort...
January 31, 2018: Foot
https://www.readbyqxmd.com/read/29793130/anxiety-memories-and-coping-in-patients-undergoing-intracranial-tumor-surgery
#9
Tom J van Ark, Markus Klimek, Peter de Smalen, Arnaud J P E Vincent, Robert Jan Stolker
OBJECTIVES: The diagnosis and the surgical removal of a brain tumor can have serious impact on the quality of life of a patient. The question rises, whether having more or just less memories of the procedure is better for coping with such an event. Furthermore, for preoperative information of future patients it is important to know how patients process their emotions and memories. The primary objective of this study was to investigate the link between preoperative anxiety, the perioperative experience and the quantity and quality of postoperative memories in patients who underwent intracranial tumor surgery...
May 17, 2018: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29793108/manganese-contamination-affects-the-motor-performance-of-wild-northern-quolls-dasyurus-hallucatus
#10
Ami Fadhillah Amir Abdul Nasir, Skye F Cameron, Amanda C Niehaus, Christofer J Clemente, Frank A von Hippel, Robbie S Wilson
Neuromotor deficits are an important sign of manganese (Mn) toxicity in humans and laboratory animals. However, the impacts of Mn exposure on the motor function of wild animals remains largely unknown. Here, we assessed the impact of chronic exposure to Mn from active mining operations on Groote Eylandt, Australia on the motor function of the semi-arboreal northern quoll (Dasyurus hallucatus), an endangered species. The three motor tests conducted-maximum sprint speed on a straight run, manoeuvrability around a corner, and motor control on a balance beam-showed that elevated Mn body burden did not diminish performance of these traits...
May 21, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29793107/biofiltration-of-methane-using-hybrid-mixtures-of-biochar-lava-rock-and-compost
#11
Helen La, J Patrick A Hettiaratchi, Gopal Achari, Tobin J Verbeke, Peter F Dunfield
Using hybrid packing materials in biofiltration systems takes advantage of both the inorganic and organic properties offered by the medium including structural stability and a source of available nutrients, respectively. In this study, hybrid mixtures of compost with either lava rock or biochar in four different mixture ratios were compared against 100% compost in a methane biofilter with active aeration at two ports along the height of the biofilter. Biochar outperformed lava rock as a packing material by providing the added benefit of participating in sorption reactions with CH4 ...
May 21, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29793095/sex-hormones-affect-acute-and-chronic-stress-responses-in-sexually-dimorphic-patterns-consequences-for-depression-models
#12
Lei Guo, Yi-Xi Chen, Yu-Ting Hu, Xue-Yan Wu, Yang He, Juan-Li Wu, Man-Li Huang, Matthew Mason, Ai-Min Bao
BACKGROUND: Alterations in peripheral sex hormones may play an important role in sex differences in terms of stress responses and mood disorders. It is not yet known whether and how stress-related brain systems and brain sex steroid levels fluctuate in relation to changes in peripheral sex hormone levels, or whether the different sexes show different patterns. We aimed to investigate systematically, in male and female rats, the effect of decreased circulating sex hormone levels following gonadectomy on acute and chronic stress responses, manifested as changes in plasma and hypothalamic sex steroids and hypothalamic stress-related molecules...
May 21, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29793081/geochemical-anomalies-of-trace-elements-in-unremediated-soils-of-mt-karcz%C3%A3-wka-a-historic-lead-mining-area-in-the-city-of-kielce-poland
#13
Agnieszka Gałuszka, Zdzisław M Migaszewski, Sabina Dołęgowska, Artur Michalik
Concentrations of selected trace elements (Ag, As, Ba, Cd, Co, Cr, Cu, Mn, Ni, Pb, Zn) and rare earth elements were determined in 61 samples of surface soils collected from Mt. Karczówka, a historic Pb ore mining area located in the city of Kielce, south-central Poland. Some of these samples were subjected to XRD analyses and Pb stable isotope measurements. The mineral and chemical composition of rock samples were also examined. Mining activity in the study area was conducted mostly during 15th-17th centuries using technologically primitive methods, and was finally ceased in the first half of the 19th century...
May 21, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29793069/a-2d-tank-test-on-remediation-of-nitrobenzene-contaminated-aquifer-using-in-situ-reactive-zone-with-emulsified-nanoscale-zero-valent-iron
#14
Jun Dong, Yang Dong, Chunyu Wen, Song Gao, Liming Ren, Qiburi Bao
Nitrobenzene (NB) is one of the most challenging pollutants for groundwater remediation due to its great harm and recalcitrance. Emulsified nanoscale zero-valent iron (EZVI) is considered as a promising agent for in-situ remediation of contaminated groundwater for its high reactivity, good durability and low cost. In this paper, 2D tank experiment was conducted to evaluate the effectiveness of enhanced remediation of NB-contaminated groundwater with EZVI. 9 L of EZVI solution was injected into aquifer to establish in-situ reactive zone (IRZ) before 40 d of NB contamination...
May 15, 2018: Chemosphere
https://www.readbyqxmd.com/read/29793067/performance-and-methane-fermentation-characteristics-of-a-pilot-scale-anaerobic-membrane-bioreactor-anmbr-for-treating-pharmaceutical-wastewater-containing-m-cresol-mc-and-iso-propyl-alcohol-ipa
#15
Zhaobo Chen, Xue Li, Dongxue Hu, Yubo Cui, Fuguang Gu, Fuquan Jia, Tingting Xiao, Haiyan Su, Jiao Xu, Haixu Wang, Pan Wu, Ying Zhang, Na Jiang
In this study, a pilot scale anaerobic membrane bioreactor (AnMBR) was operated for 80 days to treat pharmaceutical wastewater containing m-cresol (MC) and iso-propyl alcohol (IPA). The aim of the study is to investigate the performance and methane fermentation characteristics of AnMBR at different hydraulic retention time (HRT) (48, 36, 24, 18 and 12 h). The average total removal efficiencies of MC and IPA were 95%, 96% during the 80 days, which demonstrated that the AnMBR system performed well in the MC and IPA removal...
May 11, 2018: Chemosphere
https://www.readbyqxmd.com/read/29793019/factors-predicting-non-compliance-with-follow-up-after-endovascular-aneurysm-repair
#16
Timothy P Shiraev, Elif Durur, David A Robinson
PURPOSE: Although the potential for complications following endovascular aneurysm repair (EVAR) mandates lifetime follow-up, non-compliance with follow-up has been shown to be as high as 57%. We sought to investigate the incidence of non-compliance with follow up in our patient population and to identify risk factors associated with this, in order to allow implementation of targeted strategies to prevent loss to follow up. METHODOLOGY: We carried out a review of consecutive patients undergoing EVAR at two Sydney hospitals between 1995 and 2015...
May 21, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29793018/image-fusion-and-3d-roadmapping-in-endovascular-surgery
#17
Douglas W Jones, Lars Stangenberg, Nicholas J Swerdlow, Matthew Alef, Ruby Lo, Fahad Shuja, Marc L Schermerhorn
Practitioners of endovascular surgery have historically utilized two-dimensional (2D) intraoperative fluoroscopic imaging, with intra-vascular contrast opacification, to treat complex three-dimensional (3D) pathology. Recently, major technical developments in intraoperative imaging have made image fusion techniques possible: the creation of a 3D patient-specific vascular roadmap based on preoperative imaging which aligns with intraoperative fluoroscopy, with many potential benefits. First, a 3D model is segmented from preoperative imaging, typically a CT scan...
May 21, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29793010/restoration-of-autologous-arteriovenous-fistula-by-removal-of-the-occluded-short-venous-part-and-venovenous-end-to-end-anastomosis-in-a-hemodialysis-patient
#18
Tsuyoshi Takashima, Keiichiro Matsumoto, Chihiro Takeshita, Eriko Nonaka, Sae Matsushita, Makoto Fukuda, Motoaki Miyazono, Yuji Ikeda
Standard salvage procedures for occuluded autologous arteriovenous fistula (AVF) in a hemodialysis patient are endovascular and/or surgical therapy. When endovascular therapy and thrombectomy prove unsuccessful, it is most likely that creating a new AVF or arteriovenous graft will be considered. However, if the occuluded venous part is short, we have adopted an operative technique for repair of AVF by removal of the occluded short venous part and venovenous end-to-end anastomosis. To our knowledge, the efficacy and clinical course of restoration of AVF by the technique have not been reported to date...
May 21, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29793007/minimum-clinically-important-differences-in-chronic-pain-vary-considerable-by-baseline-pain-and-methodological-factors-systematic-review-of-empirical-studies
#19
REVIEW
Mette Frahm Olsen, Eik Bjerre, Maria Damkjær Hansen, Britta Tendal, Jørgen Hilden, Asbjørn Hróbjartsson
BACKGROUND: The minimum clinically important difference (MCID) is used to interpret the relevance of treatment effects, e.g. when developing clinical guidelines, evaluating trial results or planning sample sizes. There is currently no agreement on an appropriate MCID in chronic pain and little is known about which contextual factors cause variation. METHODS: Systematic review. We searched PubMed, EMBASE and Cochrane Library. Eligible studies determined MCID for chronic pain based on a one-dimensional pain scale, a patient-reported transition scale of perceived improvement; and either a mean change analysis (mean difference in pain among minimally improved patients) or a threshold analysis (pain reduction associated with best sensitivity and specificity for identifying minimally improved patients)...
May 21, 2018: Journal of Clinical Epidemiology
https://www.readbyqxmd.com/read/29792999/does-solid-fusion-eliminate-rod-fracture-after-pedicle-subtraction-osteotomy-in-ankylosing-spondylitis-related-thoracolumbar-kyphosis
#20
Shi-Zhou Zhao, Bang-Ping Qian, Mu Qiao, Jun Jiang, Yong Qiu
BACKGROUND CONTEXT: Rod fracture (RF) has a negative impact on the surgical outcome of ankylosing spondylitis (AS) patients following lumbar pedicle subtraction osteotomy (PSO). However, there is a paucity of published studies analyzing the risk factors for RF in PSO-treated AS patients with thoracolumbar kyphosis. PURPOSE: To investigate the risk factors for RF after PSO for thoracolumbar kyphosis secondary to AS. STUDY DESIGN/SETTING: Retrospective single-center study...
May 21, 2018: Spine Journal: Official Journal of the North American Spine Society
keyword
keyword
42919
1
2
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"