Synthesis, characterization and application of polyacrylamide grafted bioflocculant

Publication date: Available online 22 November 2019Source: Physics and Chemistry of the Earth, Parts A/B/CAuthor(s): S.S. Ngema, A.K. Basson, T.S. MalieheAbstractWater pollution contributes to water scarcity by decreasing the amount of available freshwater. Grafted bioflocculants tend to have excellent wastewater remediation capabilities. The aim of this research was to synthesize, characterize and apply polyacrylamide grafted bioflocculant to wastewater treatment. Bioflocculant (TMT−1) produced by Bacillus pumilus JX860616 was grafted with acrylamide chains using a microwave initiated method. To optimize the synthesis, irradiation time and acrylamide concentration were varied. Optimum grade (TMT−1-g-PAM 2) was characterized by intrinsic viscosity, elemental analysis, SEM, FTIR spectroscopy, XRD and TGA. TMT−1-g-PAM 2's biosafety – on human embryonic kidney (HEK) 293 cells – was assessed by MTT assay. Its biodegradation was investigated by a composting method. The effects of dosage size, cations (BaCl2, KCl, NaCl, LiCl, CaCl2, MgCl2 and FeCl3), pH and temperature on the flocculating activities of the flocculant were evaluated, spectrophotometrically. The flocculation mechanism was determined by measuring zeta potentials using Zetasizer Nano. Optimum grade (TMT−1-g-PAM 2) was obtained when a concentration of 2.5 g of acrylamide was used for grafting on TMT−1 at irradiation time of 3 min. Changes observed in intrinsic viscosity, e...
Source: Physics and Chemistry of the Earth, Parts ABC - Category: Science Source Type: research

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ConclusionGiven our findings, conservative treatment should be compared to surgical treatment for displaced fractures and the anterior approach should be compared to the posterior one for surgical cases.Level of evidenceIV.
Source: Orthopaedics and Traumatology: Surgery and Research - Category: Orthopaedics Source Type: research
ConclusionsThe levels of urinary miRNAs are valuable biomarkers for idiopathic ONFH. Given the noninvasive nature of this test, it is potentially useful for diagnosis and monitoring of idiopathic ONFH progression.
Source: Journal of Orthopaedic Translation - Category: Orthopaedics Source Type: research
ConclusionThere was no statistically significant different between knotless versus knotted medial row double row rotator cuff repair constructs using suture tape in regard to displacement across the repair site, stiffness and ultimate load to failure. Despite previous evidence suggesting inferiority of knotless medial row technique using suture constructs, this evidence may support the biomechanical equivalency of knotless medial row technique using suture tape.
Source: Journal of Clinical Orthopaedics and Trauma - Category: Orthopaedics Source Type: research
Publication date: Available online 22 February 2020Source: Journal of American Association for Pediatric Ophthalmology and StrabismusAuthor(s): HongVan Le, Ann Shue, Sharon F. FreedmanAbstractPurposeTo investigate the magnitude of reduction in the axial length (AL) and corneal diameter following glaucoma drainage device (GDD) placement and intraocular pressure (IOP) reduction in glaucoma patients
Source: Journal of American Association for Pediatric Ophthalmology and Strabismus - Category: Opthalmology Source Type: research
Authors: Khan SU, Ullah I, Ahmed I, Imran A, Ullah N PMID: 32083611 [PubMed - as supplied by publisher]
Source: Journal of X-Ray Science and Technology - Category: Radiology Tags: J Xray Sci Technol Source Type: research
CONCLUSIONS: For peripheral lung cancer, the measurement on CT and routine MRI sequences can potentially replace each other after comprehensive consideration of examination purposes, but for central lung cancer, alternative use of CT and MRI in evaluating treatment responses for lung cancer should needs extra attention. The diameter measurement of lung cancer on DWI is consistent with that on T1WI and T2WI, suggesting that DWI can provide functional and morphological information. PMID: 32083610 [PubMed - as supplied by publisher]
Source: Journal of X-Ray Science and Technology - Category: Radiology Tags: J Xray Sci Technol Source Type: research
This study was, therefore, conducted to evaluate the effectiveness WASH education program on households' WASH performance in rural Dembiya, northwest Ethiopia. Method: An uncontrolled before-and-after intervention study was conducted. Baseline and endline surveys were done among 225 and 302 randomly selected households with under-5 children, respectively, using a structured questionnaire and observational checklists. Percent point change was used to see the effect of the intervention. Pearson χ2 and Fisher exact tests were used to test for statistically significant percentage point changes on the basis of P 
Source: Environmental Health Insights - Category: Environmental Health Authors: Tags: Environ Health Insights Source Type: research
Authors: Timmermans-Sprang E, Collin RWJ, Henkes A, Philipsen M, Mol JA Abstract [This corrects the article DOI: 10.18632/oncotarget.26873.]. PMID: 32082491 [PubMed - in process]
Source: Oncotarget - Category: Cancer & Oncology Tags: Oncotarget Source Type: research
Authors: Visochek L, Atias D, Spektor I, Castiel A, Golan T, Cohen-Armon M Abstract [This corrects the article DOI: 10.18632/oncotarget.27268.]. PMID: 32082490 [PubMed - in process]
Source: Oncotarget - Category: Cancer & Oncology Tags: Oncotarget Source Type: research
Authors: Lopez S, Perrone E, Bellone S, Bonazzoli E, Zeybek B, Han C, Tymon-Rosario J, Altwerger G, Menderes G, Bianchi A, Zammataro L, Manzano A, Manara P, Ratner E, Silasi DA, Huang GS, Azodi M, Schwartz PE, Raspagliesi F, Angioli R, Buza N, Hui P, Bond HM, Santin AD Abstract Background: Uterine and ovarian carcinosarcomas (CS) are rare cancers with poor prognosis. Sacituzumab-govitecan (SG) is a new class of antibody-drug-conjugate (ADC) targeting the human-trophoblast-cell-surface marker (Trop-2) conjugated with the active metabolite of irinotecan (SN-38). We evaluated the efficacy of SG against biologically ag...
Source: Oncotarget - Category: Cancer & Oncology Tags: Oncotarget Source Type: research
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