keyword
MENU ▼
Read by QxMD icon Read
search

efficiency

keyword
https://www.readbyqxmd.com/read/29679945/occurrence-elimination-enantiomeric-distribution-and-intra-day-variations-of-chiral-pharmaceuticals-in-major-wastewater-treatment-plants-in-beijing-china
#1
Lei Duan, Yizhe Zhang, Bin Wang, Shubo Deng, Jun Huang, Yujue Wang, Gang Yu
The occurrence, eliminations, enantiomeric distribution and intra-day variations of five chiral pharmaceuticals (three beta-blockers and two antidepressants) were investigated in eight major WWTPs in Beijing, China. The results revealed that metoprolol (MTP) and venlafaxine (VFX) were of the highest concentrations among the five determined pharmaceuticals with mean concentrations of 803 ng L-1 and 408 ng L-1 , respectively in influents, and 354 ng L-1 and 165 ng L-1 in effluents, respectively...
April 18, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29679943/photocatalytic-decomposition-of-selected-biologically-active-compounds-in-environmental-waters-using-tio-2-polyaniline-nanocomposites-kinetics-toxicity-and-intermediates-assessment
#2
Daniela V Šojić Merkulov, Vesna N Despotović, Nemanja D Banić, Sanja J Armaković, Nina L Finčur, Marina J Lazarević, Dragana D Četojević-Simin, Dejan Z Orčić, Marija B Radoičić, Zoran V Šaponjić, Mirjana I Čomor, Biljana F Abramović
A comprehensive study of the removal of selected biologically active compounds (pharmaceuticals and pesticides) from different water types was conducted using bare TiO2 nanoparticles and TiO2 /polyaniline (TP-50, TP-100, and TP-150) nanocomposite powders. In order to investigate how molecular structure of the substrate influences the rate of its removal, we compared degradation efficiency of the initial substrates and degree of mineralization for the active components of pharmaceuticals (propranolol, and amitriptyline) and pesticides (sulcotrione, and clomazone) in double distilled (DDW) and environmental waters...
April 18, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29679918/decentralisation-and-waste-flows-a-welfare-approach
#3
Laura Levaggi, Rosella Levaggi, Carmine Trecroci
We analyse incentives, equilibria and implications of the governance framework for the disposal of municipal solid waste in an N-Region model where waste mobility is allowed. The key decisions revolve around the flow of waste between regions and the externalities associated with its final disposal. Two different institutional settings are considered: a centralised framework where a central planner takes all the decisions and a decentralised model where each region decides on its waste flows. When the regions are characterised by different levels of efficiency in the final treatment of waste, a certain degree of mobility might allow to reap the benefits of higher efficiency...
April 18, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29679907/in-vitro-screening-homology-modeling-and-molecular-docking-studies-of-some-pyrazole-and-imidazole-derivatives
#4
Farid Abrigach, Yahya Rokni, Abdelilah Takfaoui, Mohamed Khoutoul, Henri Doucet, Abdeslam Asehraou, Rachid Touzani
A series of synthesized compounds based on pyrazole and imidazole skeletons prepared by palladium catalysts via a one-pot reaction was screened to determine their inhibitory potency against the pathogen fungus Fusarium oxysporum f.sp. albedinis (F.o.a) and four bacteria strains namely Micrococcus luteus, Bacillus subtilis, Staphylococcus aureus and Escherichia coli. The obtained result showed that these compounds exhibit an efficiency antifungal action. Whereas, they showed a very weak antibacterial activity...
April 18, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29679892/electric-field-driven-assembly-of-live-bacterial-cell-microarrays-for-rapid-phenotypic-assessment-and-cell-viability-testing
#5
Meenal Goel, Abhishek Verma, Shalini Gupta
Microarray technology to isolate living cells using external fields is a facile way to do phenotypic analysis at the cellular level. We have used alternating current dielectrophoresis (AC-DEP) to drive the assembly of live pathogenic Salmonella typhi (S.typhi) and Escherichia coli (E.coli) bacteria into miniaturized single cell microarrays. The effects of voltage and frequency were optimized to identify the conditions for maximum cell capture which gave an entrapment efficiency of 90% in 60 min. The chip was used for calibration-free estimation of cellular loads in binary mixtures and further applied for rapid and enhanced testing of cell viability in the presence of drug via impedance spectroscopy...
April 7, 2018: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29679891/removal-of-arsenic-and-mercury-species-from-water-by-covalent-triazine-framework-encapsulated-%C3%AE-fe-2-o-3-nanoparticles
#6
Karen Leus, Karel Folens, Nina Ricci Nicomel, Jeffrey Paulo H Perez, Maria Filippousi, Maria Meledina, Marinela M Dîrtu, Stuart Turner, Gustaaf Van Tendeloo, Yann Garcia, Gijs Du Laing, Pascal Van Der Voort
The covalent triazine framework, CTF-1, served as host material for the in situ synthesis of Fe2 O3 nanoparticles. The composite material consisted of 20 ± 2 m% iron, mainly in γ-Fe2 O3 phase. The resulting γ-Fe2 O3 @CTF-1 was examined for the adsorption of AsIII , AsV and HgII from synthetic solutions and real surface-, ground- and wastewater. The material shows excellent removal efficiencies, independent from the presence of Ca2+ , Mg2+ or natural organic matter and only limited dependency on the presence of phosphate ions...
April 16, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29679887/determining-chewing-efficiency-using-a-solid-test-food-and-considering-all-phases-of-mastication
#7
Ting Liu, Xinmiao Wang, Jianshe Chen, Hilbert W van der Glas
OBJECTIVES: Following chewing a solid food, the median particle size, X50 , is determined after N chewing cycles, by curve-fitting of the particle size distribution. Reduction of X50 with N is traditionally followed from N ≥ 15-20 cycles when using the artificial test food Optosil® , because of initially unreliable values of X50 . The aims of the study were (i) to enable testing at small N-values by using initial particles of appropriate size, shape and amount, and (ii) to compare measures of chewing ability, i...
April 10, 2018: Archives of Oral Biology
https://www.readbyqxmd.com/read/29679882/the-effect-of-resveratrol-on-glycation-and-oxidation-products-in-plasma-and-liver-of-chronic-methylglyoxal-treated-rats
#8
Zülbiye Yılmaz, Esra Betül Kalaz, A Fatih Aydın, Vakur Olgaç, Semra Doğru-Abbasoğlu, Müjdat Uysal, Necla Koçak-Toker
BACKGROUND: Methylglyoxal (MG) is a highly reactive dicarbonyl compound. It is produced by processes like glycolysis, glucose autooxidation, lipid peroxidation, and protein glycation. It is a major precursor of advanced glycation end products (AGE). It also exacerbates oxidative stress in the organism. Although there are some in vitro studies investigating the effect of resveratrol (RES) as an antioxidant and antiglycating agent on MG-induced toxicity, in vivo effect of RES is unknown...
December 19, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/29679870/application-of-enteromorpha-polysaccharides-as-coagulant-aid-in-the-simultaneous-removal-of-cuo-nanoparticles-and-cu-2-effect-of-humic-acid-concentration
#9
Yuanxia Luo, Baoyu Gao, Qinyan Yue, Ruihua Li
Humic acid (HA) influences the aggregation and stability of nanoparticles (NPs), which determine the removal performance of NPs in coagulation. Consequently, in this study, the impact of HA concentration on the simultaneous removal of CuO NPs, Cu2+ , and natural organic matter (NOM) was investigated. Enteromorpha polysaccharides (Ep), as the novel recycling coagulant aid, were integrated with polyaluminum chloride (PAC) to treat composite contaminants in this coagulation process. Removal performance, floc properties, zeta potential, scanning electron microscope (SEM) images, and Fourier Transform Infrared Spectra (FT-IR) were measured and analyzed...
March 26, 2018: Chemosphere
https://www.readbyqxmd.com/read/29679853/the-effect-of-different-light-intensities-and-light-dark-regimes-on-the-performance-of-photosynthetic-microalgae-microbial-fuel-cell
#10
Elahe Bazdar, Ramin Roshandel, Soheila Yaghmaei, Mohammad Mahdi Mardanpour
This study develops a photosynthetic microalgae microbial fuel cell (PMMFC) engaged Chlorella vulgaris microalgae to investigate effect of light intensities and illumination regimes on simultaneous production of bioelectricity, biomass and wastewater treatment. The performance of the system under different light intensity (3500, 5000, 7000 and 10,000 lx) and light/dark regimes (24/00, 12/12, 16/8 h) was investigated. The optimum light intensity and light/dark regimes for achieving maximum yield of PMMFC were obtained...
April 10, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29679851/electronic-journal-clubs-for-capacity-building-a-case-study-in-psychiatry-as-a-model-for-medical-disciplines-in-developing-countries
#11
Abha Thakurdesai, Abhishek Ghosh, Vikas Menon, Swapnajeet Sahoo, Adarsh Tripathi, Devavrat Harshe, Chittaranjan Andrade
BACKGROUND: Journal clubs (JCs) teach participants how to critically read and assimilate materials published in journals. Electronic JCs (eJCs) provide a similar platform through internet groups, allowing members to participate in and review JC activities as well as JC archives in their free time. METHODS: We describe the operations and the successes of eJCIndia, to our knowledge the first eJC in India in the field of mental health. eJCIndia was started for capacity building in teaching and research competence in the field...
April 13, 2018: Asian Journal of Psychiatry
https://www.readbyqxmd.com/read/29679839/xenon-detection-in-human-blood-analytical-validation-by-accuracy-profile-and-identification-of-critical-storage-parameters
#12
Cécile Frampas, Julia Ney, Mark Coburn, Marc Augsburger, Vincent Varlet
Xenon is a rare, mostly inert, noble gas that has applications in a wide range of fields, including medicine. Xenon acts on the human body as a useful organ-protective and anesthetic agent and has also been previously studied for potential applications in fields such as optics, aerospace and medical imaging. Recently, it was discovered that xenon can boost erythropoietin production, and it has been used as a performance-enhancing agent in international sports competitions such as the Sochi Olympic Games. Therefore, screening methods to detect the misuse of xenon by analysis of biological samples and to monitor anesthesia kinetics and efficiency are being investigated...
April 13, 2018: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/29679828/accelerated-effects-of-nano-zno-on-phosphorus-removal-by-chlorella-vulgaris-formation-of-zinc-phosphate-crystallites
#13
Huaixian Xiao, Na Liu, Ke Tian, Shixiang Liu, Fei Ge
Nanoparticles have been reported to induce toxicity to aquatic organisms, however, their potential impacts on phosphorus removal from wastewater by algae are unclear. In this study, the effects of nanoparticle ZnO (nano-ZnO) on phosphate (PO4 3- ) removal by a green alga Chlorella vulgaris were investigated. We found that PO4 3- removal efficiency was accelerated with high concentrations of nano-ZnO (0.04-0.15mM) but reduced with low concentrations of nano-ZnO (0.005-0.04mM) compared to the control (without nano-ZnO), suggesting that PO4 3- removal efficiency by C...
April 18, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29679822/advanced-strategies-to-improve-nitrification-process-in-sequencing-batch-reactors-a-review
#14
REVIEW
Francisco Jaramillo, Marcos Orchard, Carlos Muñoz, Mauricio Zamorano, Christian Antileo
The optimization of biological nitrogen removal (BNR) in sequencing batch reactors has become the aim of researchers worldwide in order to increase efficiency and reduce energy and operating costs. This research has focused on the nitrification phase as the limiting reaction rate of BNR. This paper analyzes different strategies and discusses different tools such as: factors for achieving partial nitrification, real-time control and monitoring for detecting characteristic patterns of nitrification/denitrification as end-points, use of modeling based on activated sludge models, and the use of data-driven modeling for estimating variables that cannot be easily measured experimentally or online...
April 18, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29679808/%C3%AE-tricalcium-phosphate-composite-ceramics-with-high-compressive-strength-enhanced-osteogenesis-and-inhibited-osteoclastic-activities
#15
Ye Tian, Teliang Lu, Fupo He, Yubin Xu, Haishan Shi, Xuetao Shi, Fei Zuo, Shanghua Wu, Jiandong Ye
β-tricalcium phosphate (β-TCP) is well known as a resorbable bone repair material due to its inherent excellent biocompatibility and osteoconductivity. However, β-TCP is encountered with osteostimulation-deficiency and poor mechanical strength because of poor sinterability. Herein, we prepared novel β-TCP composite ceramics (TCP/SPGs) by introducing strontium-containing phosphate-based glass (SPG; 45P2 O5 -32SrO-23Na2 O) as sintering additive. The SPG helped to achieve efficient liquid-phase sintering of β-TCP at 1100 °C...
April 13, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29679806/an-intelligent-dual-stimuli-responsive-photosensitizer-delivery-system-with-o-2-supplying-for-efficient-photodynamic-therapy
#16
Hongjuan Zhao, Li Li, Cuixia Zheng, Yongwei Hao, Mengya Niu, Yujie Hu, Junbiao Chang, Zhenzhong Zhang, Lei Wang
The effects of photodynamic therapy (PDT) are limited by the hypoxic tumor microenvironment (TME). In this paper, a new type of biocompatible multifunctional photosensitizer delivery system was fabricated to relieve tumor hypoxia and improve the efficacy of PDT. The photosensitizer hematoporphyrin monomethyl ether (HMME) and catalase (CAT) were encapsulated in the pores of mesoporous graphitic-phase carbon nitride nanosheets (mpg-C3 N4 ). Next, hyaluronic (HA) was coated on the surface of the mpg-C3 N4 via an amide linkage to construct the tumor-targeting HAase/CAT dual activatable and mpg-C3 N4 /HMME response photosensitizer delivery system (HA@mpg-C3 N4 -HMME/CAT)...
April 10, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29679805/poly-l-lysine-modified-cryogels-for-efficient-bilirubin-removal-from-human-plasma
#17
Mehmet Emin Çorman
In this study, poly-l-lysine (PLL) immobilized PHEMA cryogel was designed for the specific bilirubin removal from human plasma. The surface of PHEMA cryogels is surrounded by PLL chains to enhance specific binding of bilirubin molecules via specific complementary electrostatic interactions. The functionalization of the PHEMA cryogel was carried out by direct coupling of PLL to pre-activated OH-group of the HEMA alcohol units via carbodiimide activation. Prior to removal of bilirubin from human plasma, the optimization parameters including, initial bilirubin concentration, flow rate, temperature, ionic strength, and adsorption rates on adsorption of PLL-PHEMA cryogel were investigated from the aqueous medium...
April 5, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29679802/the-evolving-role-of-dna-inter-strand-crosslinks-in-chemotherapy
#18
REVIEW
Halley B Rycenga, David T Long
DNA crosslinking agents make up a broad class of chemotherapy agents that target rapidly dividing cancer cells by disrupting DNA synthesis. These drugs differ widely in both chemical structure and biological effect. In cells, crosslinking agents can form multiple types of DNA lesions with varying efficiencies. Inter-strand crosslinks (ICLs) are considered to be the most cytotoxic lesion, creating a covalent roadblock to replication and transcription. Despite over 50 years in the clinic, the use of crosslinking agents that specialize in the formation of ICLs remains limited, largely due to high toxicity in patients...
April 18, 2018: Current Opinion in Pharmacology
https://www.readbyqxmd.com/read/29679796/flame-retardant-superhydrophobic-coating-derived-from-fly-ash-on-polymeric-foam-for-efficient-oil-corrosive-water-and-emulsion-separation
#19
Jintao Wang, Hongfei Wang, Guihong Geng
Developing novel oil sorbents with both superhydrophobicity and flame resistance reveals an enticing prospect for oil/water separation. In this study, superhydrophobic foam with superior flame retardancy and sorption capability is reported through a simple one-step fabrication route in alkaline water/ethanol system containing dopamine, fly ash (FA) and dodecanethiol (DT). The introduction of FA endows the foam with excellent flame retardancy, and the as-prepared foam reveals improved flame resistance compared with original and polydopamine (PDA) coated foams, The obtained foams can quickly absorb various types of oils up to 34-47 times of their own weight, and the absorbed oils can be repeatedly recovered by a simple vacuum filtration process...
April 18, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29679794/multi-paratopic-vegf-decoy-receptor-have-superior-anti-tumor-effects-through-anti-egfrs-and-targeted-anti-angiogenic-activities
#20
Dae Hee Lee, Myeong Youl Lee, Youngsuk Seo, Hyo Jeong Hong, Hyun Joo An, Jong Soon Kang, Ho Min Kim
Limitation of current anti-Vascular Endothelial Growth Factor (VEGF) cancer therapy is transitory responses, inevitable relapses and its insufficient tumor-targeting. Thus, multifaceted approaches, including the development of bispecific antibodies and combination strategies targeting different pathways have been proposed as an alternative. Here, we developed a novel multi-paratopic VEGF decoy receptor, Cetuximab-VEGF-Grab and Trastuzumab-VEGF-Grab, by genetically fusing VEGF decoy receptor (VEGF-Grab) to a single chain Fv of anti-Epidermal Growth Factor Receptor (EGFR) antibody (Cetuximab and Trastuzumab)...
April 16, 2018: Biomaterials
keyword
keyword
41605
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"