keyword
MENU ▼
Read by QxMD icon Read
search

Recycle

keyword
https://www.readbyqxmd.com/read/28636053/evidence-of-bad-recycling-practices-bfrs-in-children-s-toys-and-food-contact-articles
#1
A Guzzonato, F Puype, S J Harrad
Brominated flame retardants (BFRs) have been used intentionally in a wide range of plastics, but are now found in an even wider range of such materials (including children's toys and food contact articles) as a result of recycling practices that mix BFR-containing waste plastics with "virgin" materials. In this study Br was quantified in toy and food contact samples on the assumption that its concentration can be used as a metric for BFR contamination. Subsequently, compound specific determination of BFRs was performed to evaluate the validity of the aforementioned assumption, crucial to render rapid, inexpensive, in situ Br determination in non-laboratory environments (such as waste handling facilities) a viable option for sorting wastes according to their BFR content...
June 21, 2017: Environmental Science. Processes & Impacts
https://www.readbyqxmd.com/read/28635641/the-fate-of-pollutants-in-porous-asphalt-pavements-laboratory-experiments-to-investigate-their-potential-to-impact-environmental-health
#2
Susanne M Charlesworth, Jamie Beddow, Ernest O Nnadi
Pervious Paving Systems (PPS) are part of a sustainable approach to drainage in which excess surface water is encouraged to infiltrate through their structure, during which potentially toxic elements, such as metals and hydrocarbons are treated by biodegradation and physical entrapment and storage. However, it is not known where in the PPS structure these contaminants accumulate, which has implications for environmental health, particularly during maintenance, as well as consequences for the recycling of material from the PPS at the end-of-life...
June 21, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28634368/preparation-and-properties-of-a-hyperbranch-structured-polyamine-adsorbent-for-carbon-dioxide-capture
#3
Hui He, Yajie Hu, Shuixia Chen, Linzhou Zhuang, Beibei Ma, Qinghua Wu
A fibrous adsorbent with amino-terminated hyperbranch structure (PP-AM-HBP-NH2) was prepared by grafting hyperbranched polyamine (HBP-NH2) onto the acrylamide-modified polypropylene (PP) fibers. The grafting of AM on PP fibers provided the active sites for introducing HBP-NH2 onto the PP fibers. This kind of "grafting to" procedure to synthesize hyperbranch-structured fiber could overcome the disadvantages of stepwise growth procedure, avoiding the complicated synthesis process and the requirement of strict experimental conditions...
June 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28633828/bi25vo40-microcube-with-step-surface-for-visible-light-photocatalytic-reduction-of-cr-vi-enhanced-activity-and-ultrasound-assisted-regeneration
#4
Pei Wang, Wenda Ji, Mingmeng Li, Gaoke Zhang, Jinlong Wang
In this study, a kind of bismuth vanadium (Bi25VO40) microcube with step surface was successfully synthesized by a fast and mild hydrothermal method. The reaction time and hydrothermal temperature are the key factors which are accounted for the formation of this unique structure. The as-prepared Bi25VO40 microcube exhibited considerably higher visible light photocatalytic activity compared with the smooth one, revealing that fabrication of Bi25VO40 with step surface was an effective method to improve the photocatalytic activity...
September 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28633514/metagenomic-smrt-sequencing-based-exploration-of-novel-lignocellulose-degrading-capability-in-wood-detritus-from-torreya-nucifera-in-bija-forest-on-jeju-island
#5
Han Na Oh, Tae Kwon Lee, Jae Wan Park, Jee Hyun No, Dockyu Kim, Woo Jun Sul
Lignocellulose, mostly composed of cellulose, hemicellulose and lignin generated through secondary growth of woody plant, is considered as promising resources for bio-fuel. In order to use lignocellulose as a biofuel, the biodegradation besides high-cost chemical treatments were applied, but its knowledge on decomposition of lignocellulose occurring in a natural environment were insufficient. We analyzed 16S rRNA gene and metagenome to understand how the lignocellulose are decomposed naturally in decayed Torreya nucifera (L) of Bija forest (Bijarim) in Gotjawal, an ecologically distinct environment...
June 21, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28633336/a278c-mutation-of-dihydropteridine-reductase-decreases-autophagy-via-mtor-signaling
#6
Qin Si, Sifan Sun, Yanting Gu
Dihydropteridine reductase (QDPR) plays an important role in the recycling of BH4 and is closely related to oxidative stress. We have previously reported that the overexpression of QDPR in human kidney HEK293T cells significantly protected against oxidative stress, and these beneficial effects were abolished by A278C mutation. To evaluate the effect of wild-type and mutant QDPR on autophagy and its mechanism in HEK293T cells, we constructed the wild-type and mutant QDPR expression plasmids and transfected them into HEK293T cells...
June 15, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28633064/an-innovative-approach-to-bioremediation-of-mercury-contaminated-soils-from-industrial-mining-operations
#7
Damien McCarthy, Grant C Edwards, Mae S Gustin, Andrew Care, Matthieu B Miller, Anwar Sunna
Soils contaminated with mercury (Hg) have proved expensive and logistically difficult to remediate. Research continues into finding suitable environmentally-friendly and efficient ways of achieving this end. Bioremediation is an option, which employs the strategies microorganisms have evolved to deal with Hg. One microbial strategy involves uptake and intracellular volatilisation of mercuric ions, which passively diffuse from the cell and back into the atmosphere. In this work, Pseudomonas veronii cells grown to stationary phase were immobilised in a xanthan gum-based biopolymer via encapsulation...
June 14, 2017: Chemosphere
https://www.readbyqxmd.com/read/28632772/characterization-of-slow-cycling-cells-in-the-mouse-cochlear-lateral-wall
#8
Yang Li, Kotaro Watanabe, Masato Fujioka, Kaoru Ogawa
Cochlear spiral ligament fibrocytes (SLFs) play essential roles in the physiology of hearing including ion recycling and the generation of endocochlear potential. In adult animals, SLFs can repopulate after damages, yet little is known about the characteristics of proliferating cells that support SLFs' self-renewal. Here we report in detail about the characteristics of cycling cells in the spiral ligament (SL). Fifteen P6 mice and six noise-exposed P28 mice were injected with 5-bromo-2'-deoxyuridine (BrdU) for 7 days and we chased BrdU retaining cells for as long as 60 days...
2017: PloS One
https://www.readbyqxmd.com/read/28632484/rab-gtpases-and-their-interacting-protein-partners-structural-insights-into-rab-functional-diversity
#9
Olena Pylypenko, Hussein Hammich, I-Mei Yu, Anne Houdusse
Rab molecular switches are key players in defining membrane identity and regulating intracellular trafficking events in eukaryotic cells. In spite of their global structural similarity, Rab-family members acquired particular features that allow them to perform specific cellular functions. The overall fold and local sequence conservations enable them to utilize a common machinery for prenylation and recycling; while individual Rab structural differences determine interactions with specific partners such as GEFs, GAPs and effector proteins...
June 20, 2017: Small GTPases
https://www.readbyqxmd.com/read/28632144/optimal-pitching-axis-location-of-flapping-wings-for-efficient-hovering-flight
#10
Qi Wang, J Goosen, Fred Van Keulen
Flapping wings can pitch passively about their pitching axes due to their flexibility, inertia, and aerodynamic loads. A shift in the pitching axis location can dynamically alter the aerodynamic loads, which in turn changes the passive pitching motion and the flight efficiency. Therefore, it is of great interest to investigate the optimal pitching axis for flapping wings to maximize the power efficiency during hovering flight. In this study, flapping wings are modeled as rigid plates with non-uniform mass distribution...
June 20, 2017: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/28631794/an-efficient-target-intermediate-recycling-amplification-strategy-for-ultrasensitive-fluorescence-assay-of-intracellular-lead-ions
#11
Zhi-Bin Wen, Wen-Bin Liang, Ying Zhuo, Cheng-Yi Xiong, Ying-Ning Zheng, Ruo Yuan, Ya-Qin Chai
An ultrasensitive fluorescence assay for intracellular Pb(2+) determination was proposed through target-intermediate recycling amplification based on metal-assisted DNAzyme catalysis and strand displacement reactions. Compared with only target recycling-based fluorescence assay with an M amplification ratio, the proposed assay could achieve an M × N amplification ratio to obtain an improved sensitivity by more than 10 times, in which M and N are the amplification ratios of target recycling and intermediate recycling, respectively...
June 20, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28631526/lifetime-experience-with-classic-psychedelics-predicts-pro-environmental-behavior-through-an-increase-in-nature-relatedness
#12
Matthias Forstmann, Christina Sagioglou
In a large-scale ( N = 1487) general population online study, we investigated the relationship between past experience with classic psychedelic substances (e.g. LSD, psilocybin, mescaline), nature relatedness, and ecological behavior (e.g. saving water, recycling). Using structural equation modeling we found that experience with classic psychedelics uniquely predicted self-reported engagement in pro-environmental behaviors, and that this relationship was statistically explained by people's degree of self-identification with nature...
June 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28631312/the-flow-and-fate-of-digestive-enzymes-in-the-field-cricket-gryllus-bimaculatus
#13
Joseph Woodring
The flow of enzymes, the ratio of bound to unbound enzymes, and their inactivation in the cricket Gryllus bimaculatus was studied. The digestive enzymes are forced forward into the crop by caecal contraction and then they are mixed with freshly chewed food and saliva, forming a crop-chyme. This chyme is blended by crop peristalsis, and periodic opening of the preproventricular valve (PPV) allows posterior movement into the proventriculus and further into the midgut. The contraction of the crop is modulated by Grybi-AST and Grybi-SK peptides, which are partially secreted by the caecal endocrine cells...
June 20, 2017: Archives of Insect Biochemistry and Physiology
https://www.readbyqxmd.com/read/28630295/application-of-metabolic-controls-for-the-maximization-of-lipid-production-in-semicontinuous-fermentation
#14
Jingyang Xu, Nian Liu, Kangjian Qiao, Sebastian Vogg, Gregory Stephanopoulos
Acetic acid can be generated through syngas fermentation, lignocellulosic biomass degradation, and organic waste anaerobic digestion. Microbial conversion of acetate into triacylglycerols for biofuel production has many advantages, including low-cost or even negative-cost feedstock and environmental benefits. The main issue stems from the dilute nature of acetate produced in such systems, which is costly to be processed on an industrial scale. To tackle this problem, we established an efficient bioprocess for converting dilute acetate into lipids, using the oleaginous yeast Yarrowia lipolytica in a semicontinuous system...
June 19, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28630093/dendritic-cell-sensing-of-hydrophobic-di-and-triacylated-lipopeptides-self-assembled-within-synthetic-virus-like-particles
#15
Rajni Sharma, Arin Ghasparian, John A Robinson, Kenneth C McCullough
Dendritic cells (DCs) play critical roles in developing immune defenses. One important aspect is interaction with pathogen-associated molecular patterns (PAMPs)/danger-associated molecular patterns, including di- and triacylated lipopeptides. Isolated or synthetic lipopeptides are potent vaccine adjuvants, interacting with cell surface TLR2 heterodimers. In contrast, deep embedment within bacteria cell walls would impair lipopeptide interaction with cell surface TLR2, requiring degradation for PAMP recognition...
June 19, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28629612/structural-basis-for-ribosome-rescue-in-bacteria
#16
REVIEW
Paul Huter, Claudia Müller, Stefan Arenz, Bertrand Beckert, Daniel N Wilson
Ribosomes that translate mRNAs lacking stop codons become stalled at the 3' end of the mRNA. Recycling of these stalled ribosomes is essential for cell viability. In bacteria three ribosome rescue systems have been identified so far, with the most ubiquitous and best characterized being the trans-translation system mediated by transfer-messenger RNA (tmRNA) and small protein B (SmpB). The two additional rescue systems present in some bacteria employ alternative rescue factor (Arf) A and release factor (RF) 2 or ArfB...
June 16, 2017: Trends in Biochemical Sciences
https://www.readbyqxmd.com/read/28629110/recycling-the-liquid-fraction-of-alkaline-hydrogen-peroxide-in-the-pretreatment-of-corn-stover
#17
Bárbara Ribeiro Alves Alencar, Alexandre Libanio Silva Reis, Raquel de Fatima Rodrigues de Souza, Marcos Antônio Morais, Rômulo Simões Cezar Menezes, Emmanuel Damilano Dutra
The aim of this study was to evaluate the influence of recycling the liquid fraction of pretreatment with alkaline hydrogen peroxide (AHP) on the hydrolysis of corn stover. Corn stover was pretreated in the traditional condition with 7.5% v/v H2O2. After pretreatment, the solids were separated from the liquid fraction and five successive reuse cycles of the liquid fraction were tested. The solid fraction from pretreatment in each recycle was submitted to enzymatic hydrolysis. The number of recycles had a linear negative effect (R(2)=0...
June 8, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28628987/a-long-term-study-on-the-effect-of-magnetite-supplementation-in-continuous-anaerobic-digestion-of-dairy-effluent-magnetic-separation-and-recycling-of-magnetite
#18
Gahyun Baek, Heejung Jung, Jaai Kim, Changsoo Lee
Promotion of direct interspecies electron transfer (DIET) between exoelectrogenic bacteria and electron-utilizing methanogens has recently been discussed as a new method for enhanced biomethanation. This study evaluated the effect of magnetite-promoted DIET in continuous anaerobic digestion of dairy effluent and tested the magnetic separation and recycling of magnetite to avoid continuous magnetite addition. The applied magnetite recycling method effectively supported enhanced DIET activity and biomethanation performance over a long period (>250days) without adding extra magnetite...
June 14, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28628902/recycling-stabilised-solidified-drill-cuttings-for-forage-production-in-acidic-soils
#19
Reginald B Kogbara, Bernard B Dumkhana, Josiah M Ayotamuno, Reuben N Okparanma
Stabilisation/solidification (S/S), which involves fixation and immobilisation of contaminants using cementitious materials, is one method of treating drill cuttings before final fate. This work considers reuse of stabilised/solidified drill cuttings for forage production in acidic soils. It sought to improve the sustainability of S/S technique through supplementation with the phytoremediation potential of plants, eliminate the need for landfill disposal and reduce soil acidity for better plant growth. Drill cuttings with an initial total petroleum hydrocarbon (TPH) concentration of 17,125 mg kg(-1) and low concentrations of metals were treated with 5%, 10%, and 20% cement dosages...
June 13, 2017: Chemosphere
https://www.readbyqxmd.com/read/28627867/two-dimensional-imine-linked-covalent-organic-frameworks-as-a-platform-for-selective-oxidation-of-olefins
#20
Manman Mu, Yanwen Wang, Yutian Qin, Xilong Yan, Yang Li, Li-Gong Chen
Two-dimensional imine-linked covalent organic frameworks with hydroxyl groups, namely TAPT-DHTA-COFHX and TAPT-DHTA-COFDMF, were respectively constructed by the condensation of 1, 3, 5- tris- (4- aminophenyl) triazine and 2, 5- dihydroxyl- terephthalaldehyde under solvothermal and reflux conditions. Both of COFs possess excellent thermal stability and the similar eclipsed stacking structure verified by XRD patterns. However, TAPT-DHTA-COFHX presented larger surface area (2238 m2/g) and higher crystallinity than TAPT-DHTA-COFDMF...
June 19, 2017: ACS Applied Materials & Interfaces
keyword
keyword
8253
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"