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https://www.readbyqxmd.com/read/29342061/the-effect-of-alternative-bearing-surfaces-on-the-risk-of-revision-due-to-infection-in-minimally-stabilized-total-knee-replacement-an-analysis-of-326-603-prostheses-from-the-australian-orthopaedic-association-national-joint-replacement-registry
#1
Christopher J Vertullo, Peter L Lewis, Yi Peng, Stephen E Graves, Richard N de Steiger
BACKGROUND: The effect of alternative bearing materials on the risk of revision due to infection after total knee replacement remains uncertain. By reducing the immunomodulating polyethylene wear-particle burden and with different substrate bacterial adhesion properties, Oxinium oxidized zirconium and cross-linked polyethylene (XLPE) could alter infection risk. The purpose of the current study was to analyze the risk of revision for infection in 3 comparisons of bearing combinations. METHODS: To evaluate the risk of revision for infection with XLPE, cobalt-chromium (CoCr) on XLPE was compared with CoCr on non-cross-linked polyethylene (NXLPE)...
January 17, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29340124/the-use-of-filgrastim-in-patients-with-hodgkin-lymphoma-receiving-abvd
#2
Adam F Binder, Sonia Rai, Amir Steinberg
Background: There is conflicting data about the increased risk of pulmonary toxicity when granulocyte-stimulating factor (G-CSF) is given in combination with bleomycin. No clear consensus for management of patients with Hodgkin lymphoma (HL) who require G-CSF support exists. Our objective was to evaluate whether there is an increase in pulmonary toxicity in patients who receive bleomycin and G-CSF during treatment for HL. Materials and Methods: We conducted a single-center retrospective analysis of patients with Hodgkin Lymphoma from January 2003 until July 2015...
October 1, 2017: International Journal of Hematology-oncology and Stem Cell Research
https://www.readbyqxmd.com/read/29337932/high-number-of-circulating-tumor-cells-predicts-poor-survival-of-cutaneous-melanoma-patients-in-china
#3
Jisen Li, Wenhua Fu, Wei Zhang, Peng Li
BACKGROUND Melanoma is an aggressive cancer with complex etiology and poor prognosis. Surgical resection is still the primary treatment of melanoma, but shows limited efficacy in late-stage patients. Additionally, reliable prognostic markers of skin melanoma patients are still lacking. Circulating tumor cells (CTCs) have shown promise in predicting prognosis of multiple cancers. Evaluating the prognostic value of CTC number in melanoma patients. MATERIAL AND METHODS CTCs were isolated by immunomagnetic capture from 7...
January 16, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29337887/the-use-of-municipal-solid-waste-incineration-ash-in-various-building-materials-a-belgian-point-of-view
#4
REVIEW
Aneeta Mary Joseph, Ruben Snellings, Philip Van den Heede, Stijn Matthys, Nele De Belie
Huge amounts of waste are being generated, and even though the incineration process reduces the mass and volume of waste to a large extent, massive amounts of residues still remain. On average, out of 1.3 billion tons of municipal solid wastes generated per year, around 130 and 2.1 million tons are incinerated in the world and in Belgium, respectively. Around 400 kT of bottom ash residues are generated in Flanders, out of which only 102 kT are utilized here, and the rest is exported or landfilled due to non-conformity to environmental regulations...
January 16, 2018: Materials
https://www.readbyqxmd.com/read/29327189/using-a-high-organic-matter-biowall-to-treat-a-trichloroethylene-plume-at-the-beaver-dam-road-landfill
#5
Gabriela T Niño de Guzmán, Cathleen J Hapeman, Patricia D Millner, Laura L McConnell, Dana Jackson, David Kindig, Alba Torrents
Trichloroethylene (TCE) is a highly effective industrial degreasing agent and known carcinogen. It was frequently buried improperly in landfills and has subsequently become one of the most common groundwater and soil contaminants in the USA. A common strategy to remediate TCE-contaminated sites and to prevent movement of the TCE plumes into waterways is to construct biowalls which consist of biomaterials and amendments to enhance biodegradation. This approach was chosen to contain a TCE plume emanating from a closed landfill in Maryland...
January 11, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29324716/the-effects-of-a-macromolecular-charring-agent-with-gas-phase-and-condense-phase-synergistic-flame-retardant-capability-on-the-properties-of-pp-ifr-composites
#6
Hongda Chen, Jihui Wang, Aiqing Ni, Anxin Ding, Xia Han, Ziheng Sun
In order to improve the efficiency of intumescent flame retardants (IFRs), a novel macromolecular charring agent named poly(ethanediamine-1,3,5-triazine-p-4-amino-2,2,6,6-tetramethylpiperidine) (PETAT) with gas phase and condense phase synergistic flame-retardant capability was synthesized and subsequently dispersed into polypropylene (PP) in combination with ammonium polyphosphate (APP) via a melt blending method. The chemical structure of PETAT was investigated by Fourier transform infrared spectroscopy (FTIR), and ¹H nuclear magnetic resonance (NMR) spectroscopy...
January 11, 2018: Materials
https://www.readbyqxmd.com/read/29324384/flame-retardants-in-uk-furniture-increase-smoke-toxicity-more-than-they-reduce-fire-growth-rate
#7
Sean T McKenna, Robert Birtles, Kathryn Dickens, Richard G Walker, Michael J Spearpoint, Anna A Stec, T Richard Hull
This paper uses fire statistics to show the importance of fire toxicity on fire deaths and injuries, and the importance of upholstered furniture and bedding on fatalities from unwanted fires. The aim was to compare the fire hazards (fire growth and smoke toxicity) using different upholstery materials. Four compositions of sofa-bed were compared: three meeting UK Furniture Flammability Regulations (FFR), and one using materials without flame retardants intended for the mainland European market. Two of the UK sofa-beds relied on chemical flame retardants to meet the FFR, the third used natural materials and a technical weave in order to pass the test...
December 5, 2017: Chemosphere
https://www.readbyqxmd.com/read/29320373/enhancement-of-zno-based-flexible-nano-generators-via-sol-gel-technique-for-sensing-and-energy-harvesting-applications
#8
Pandey Rajagopalan, Vipul Singh, Palani I A
Zinc oxide (ZnO) is a remarkable inorganic semiconductor with exceptional piezoelectric properties compared to other semiconductors. However, in comparison to lead-based hazardous piezoelectric materials, its features have undesired limitations. Here we report the 5~6 folds enhancement in the piezoelectric properties via chemical doping of copper matched to intrinsic ZnO. The flexible piezoelectric nanogenerator (F-PENG) device was fabricated using an unpretentious solution process of spin coating with other advantages like robust, low weight, improved adhesion, and low cost...
January 10, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29319055/composition-production-rate-and-management-of-dental-solid-waste-in-2017-in-birjand-iran
#9
Habibe Momeni, Seyyedeh Fatemeh Tabatabaei Fard, Aliye Arefinejad, Afsane Afzali, Farkhonde Talebi, Elham Rahmanpour Salmani
BACKGROUND: The presence of toxic and pathogenic agents in the dental waste products has made it to be classified as "hazardous waste." OBJECTIVE: To assess dental waste production rate and composition and approaches used to manage these waste products in 2017 in Birjand, Iran. METHODS: 48 dental clinics were evaluated in two months of 2017. Sampling was performed from each clinic 3 times a week. Samples were manually divided into 5 categories of chemical-pharmaceutical, infectious, semi-household, sharp and cutting materials, and toxic waste products, and weighed...
January 2018: International Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/29317319/the-molecular-mechanisms-of-action-of-the-endocrine-disrupting-chemical-bisphenol-a-in-the-development-of-cancer
#10
REVIEW
Ayman E Shafei, Maggie M Ramzy, Abdelhares I Hegazy, Ahmed K Husseny, Usama G El-Hadary, Mazen M Taha, Ali A Mosa
The endocrine disrupting chemical (EDC) is an exogenous substance or mixture that alters the function of the endocrine system and consequently causes adverse effects in intact organisms. Bisphenol A (BPA), one of the most common endocrine disrupting chemicals is a carbon-based synthetic compound used in the production of water bottles, cans, and teeth suture materials. It is known to be a xenoestrogen as it interacts with estrogen receptors and acts as agonist or antagonist via estrogen receptor-dependent signaling pathways...
January 6, 2018: Gene
https://www.readbyqxmd.com/read/29315795/environmental-risk-assessment-of-engineered-nano-sio2-nano-iron-oxides-nano-ceo2-nano-al2-o3-and-quantum-dots
#11
Yan Wang, Bernd Nowack
A lot of research studies have endeavored to investigate the ecotoxicological hazards of engineered nanomaterials (ENMs). However, little is known regarding the actual environmental risks of ENMs, combining both hazard and exposure data. The aim of this study is to quantify the environmental risks for nano-Al2 O3 , nano-SiO2 , nano iron oxides, nano-CeO2 , and quantum dots by comparing the predicted environmental concentrations (PEC) with the predicted no effect concentrations (PNEC). The PEC values of these five ENMs in fresh waters in 2020 for northern Europe and southeastern Europe were taken from a published dynamic probabilistic material flow analysis model...
January 9, 2018: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/29315062/invasive-breast-cancer-prognostic-value-of-peritumoral-edema-identified-at-preoperative-mr-imaging
#12
Hyejin Cheon, Hye Jung Kim, Tae Hun Kim, Hun-Kyu Ryeom, Jongmin Lee, Gab Chul Kim, Jin-Sung Yuk, Won Hwa Kim
Purpose To determine the prognostic value of peritumoral edema identified at preoperative breast magnetic resonance (MR) imaging for disease recurrence in patients with invasive breast cancer. Materials and Methods Between January 2011 and December 2012, 353 women (median age, 49 years; range, 27-77 years) with invasive breast cancer who had undergone preoperative MR imaging and mastectomy or breast-conserving surgery were identified. Two radiologists independently reviewed peritumoral edema on the basis of the degree of the signal intensity surrounding the tumor on T2-weighted images...
January 9, 2018: Radiology
https://www.readbyqxmd.com/read/29304455/sulfur-rich-microporous-polymer-enables-rapid-and-efficient-removal-of-mercury-ii-from-water
#13
Dan Xu, Winston Duo Wu, Hao-Jun Qi, Rui-Xia Yang, Wei-Qiao Deng
Design and synthesis of adsorbents for efficient decontamination of hazardous contaminants Hg2+ from wastewater, based on a facile and economical strategy, is an attractive target. Here, a novel sulfur rich microporous polymer (sulfur content of 31.4 wt %) with high surface area as well as densely populated sulfur atom with fast accessibility was reported to remove mercury (II) from water. The as prepared polymer (SMP) exhibited high binding affinity, high adsorption capacities, rapid adsorption kinetics, and good recyclability for Hg2+...
December 29, 2017: Chemosphere
https://www.readbyqxmd.com/read/29300352/risk-assessment-for-children-exposed-to-arsenic-on-baseball-fields-with-contaminated-fill-material
#14
Alesia C Ferguson, Jennifer C Black, Isaac B Sims, Jennifer N Welday, Samir M Elmir, Kendra F Goff, J Mark Higginbotham, Helena M Solo-Gabriele
Children can be exposed to arsenic through play areas which may have contaminated fill material from historic land use. The objective of the current study was to evaluate the risk to children who play and/or spend time at baseball fields with soils shown to have arsenic above background levels. Arsenic in soils at the study sites located in Miami, FL, USA showed distinct distributions between infield, outfield, and areas adjacent to the fields. Using best estimates of exposure factors for children baseball scenarios, results show that non-cancer risks depend most heavily upon the age of the person and the arsenic exposure level...
January 4, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29289830/the-synergistic-effects-of-waterborne-microcystin-lr-and-nitrite-on-hepatic-pathological-damage-lipid-peroxidation-and-antioxidant-responses-of-male-zebrafish
#15
Wang Lin, Jie Hou, Honghui Guo, Li Li, Lingkai Wang, Dandan Zhang, Dapeng Li, Rong Tang
Hazardous materials from decaying cyanobacterial blooms, such as microcystin-LR (MC-LR) and nitrite pose serious challenges to aquatic organisms. To assess combined toxic effects of MC-LR and nitrite on hepatic pathology, lipid peroxidation and antioxidant responses of fish, adult male zebrafish (Danio rerio) were exposed to solutions with different combined concentrations of MC-LR (0, 3, 30 μg/L) and nitrite (0, 2, 20 mg/L) for 30 d. The results showed that hepatic pathological lesions progressed in severity and extent with increasing concentration of single factor MC-LR or nitrite and became more severe in co-exposure groups...
December 28, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29281613/clinical-evaluation-of-complications-in-implant-supported-dentures-a-4-year-retrospective-study
#16
Sabiha Zelal Ülkü, Filiz Acun Kaya, Ersin Uysal, Belgin Gulsun
BACKGROUND Implants that can be used in the prosthetic rehabilitation of full and partial edentulous patients are now frequently used due to advances in dentistry. Despite advanced methods of applications, failures and complications can still be seen. The aim of our study was to evaluate clinical prosthetic values and complications that occurred during 4-year follow-up in implant-supported restorations. MATERIAL AND METHODS This retrospective study included 40 patients who received oral rehabilitation with an implant-supported prosthesis...
December 27, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29280776/fitness-for-duty-assessments-of-industrial-firefighters-guidance-for-occupational-medicine-physicians
#17
Marianne Dreger, Faiyaz A Bhojani, Luis Castillejo, David Cathcart, Edward M Emmett, Steven Frangos, P Mark Glencross, Chris Herman, Kevin OʼShea, Paul Rountree, David E Turner
: Industrial firefighters share many characteristics with municipal firefighters; however, employers frequently have not addressed or characterized the unique job duties, hazards, and specific physical/mental demands associated with industrial firefighting. In addition, gaps exist in the medical literature with regard to industrial firefighter demographics, behavioral risk factors, and chronic diseases. Finally, the proper methodologies for fitness-for-duty assessment of employees acting in this capacity are lacking...
December 26, 2017: Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/29280774/physical-exposures-work-tasks-and-osha-10-training-among-temporary-and-payroll-construction-workers
#18
Alberto J Caban-Martinez, Katerina M Santiago, Jordan Stillman, Kevin J Moore, Danielle Sierra, Juanita Chalmers, Melissa Baniak, Melissa M Jordan
OBJECTIVE: We characterize and compare the self-reported physical exposures, work tasks, and OSHA-10 training in a non-probabilistic sample of temporary and payroll construction workers. METHODS: In June 2016, a total of 250 payroll and temporary general laborers employed at Florida construction sites completed a survey at the job site as part of the Falls Reported Among Minority Employees (FRAME) study. RESULTS: Workers employed through temp agencies (57...
December 26, 2017: Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/29279810/role-of-concurrent-systemic-therapy-with-adjuvant-radiation-therapy-for-locally-advanced-cutaneous-head-and-neck-squamous-cell-carcinoma
#19
Uma Goyal, Nitin K Prabhakar, Rajayogesh Davuluri, Christopher M Morrison, Sun K Yi
Objective To evaluate the role of concurrent systemic therapy to postoperative radiation therapy (RT) for locally advanced cutaneous head and neck squamous cell carcinoma (LA-cHNSCC). Materials and methods A retrospective study of 32 patients with LA-cHNSCC receiving postoperative RT with and without systemic therapy was conducted. Patients with LA-cHNSCC after surgical resection with one or more high risk features were evaluated. Local regional control (LRC), distant control (DC), and acute and late toxicities were evaluated with Fisher exact tests...
October 19, 2017: Curēus
https://www.readbyqxmd.com/read/29273540/combined-disc-pelletisation-and-thermal-treatment-of-mswi-fly-ash
#20
Florian Huber, Hannes Herzel, Christian Adam, Ole Mallow, Dominik Blasenbauer, Johann Fellner
An environmentally friendly and cost efficient way for the management of municipal solid waste incineration (MSWI) fly ash represents its thermal co-treatment together with combustible waste. However, the safe introduction and storage of MSWI fly ash in the waste bunker is challenging and associated with severe problems (e.g. dust emissions, generation of undefined lumps and heat in case of moistened MSWI fly ash). Therefore, the aim of this study is to investigate the suitability of pelletisation as a pretreatment of MSWI fly ash...
December 20, 2017: Waste Management
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