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1. Significant Enhancement in Quantum Dot Light-Emitting Device Stability via a Cascading Hole Transport Layer

Author:
Davidson-Hall, Tyler; Aziz, Hany
Source:
ACS applied materials & interfaces 2020 v.12 no.14 pp. 16782-16791
ISSN:
1944-8252
Subject:
half life,   etc   ; electrochemiluminescence; electrons; energy; quantum dots;     Show all 5 Subjects
Abstract:
... This work investigates the effect of the hole transport layer (HTL) on the stability of electroluminescent quantum dot light-emitting devices (QDLEDs). The electroluminescence half-life (LT50) of QDLEDs can be improved by 25× through the utilization of a cascading HTL (CHTL) structure with consecutive steps in the highest occupied molecular orbital energy level. Using this approach, a LT50 of 864, ...
DOI:
10.1021/acsami.9b23567

2. Characteristics of quetiapine and 7-hydroxyquetiapine in hair roots and blood after a single dose of quetiapine

Author:
Yan, Hui; Ji, Jiao-jiao; Xiang, Ping; Shen, Min
Source:
Forensic science international 2020 v.309 pp. 110189
ISSN:
0379-0738
Subject:
half life,   etc   ; blood; drugs; intragastric administration; metabolites; poisoning; roots; urine;     Show all 8 Subjects
Abstract:
... This study investigated the kinetics of quetiapine and its metabolite 7-hydroxyquetiapine in guinea pig blood and hair roots during the whole time course of absorption and elimination after intragastric administration of three dosages (25 mg/kg, 50 mg/kg, 100 mg/kg). The mean maximum concentration (Cₘₐₓ) values of quetiapine in the blood of the low-, medium- and high-dose groups were 334.4, 849.0, ...
DOI:
10.1016/j.forsciint.2020.110189

3. Effect of pH on the Hydrolytic Transformation of a New Mixture Formulation of Fomesafen and Quizalofop-ethyl in Water

Author:
Das, Sushovan; Singha, Debasish; Kundu, Abhishek; Saha, Suman; Bhattacharyya, Arijita; Roy, Sankhajit
Source:
Bulletin of environmental contamination and toxicology 2020 v.104 no.4 pp. 471-476
ISSN:
0007-4861
Subject:
half life,   etc   ; analytical methods; fomesafen; guidelines; pH; quizalofop; standard deviation;     Show all 7 Subjects
Abstract:
... A hydrolytic transformation study was conducted in water of pH 4.0, 7.0 and 9.2 to evaluate the effect of pH on persistence of a new readymix formulation of fomesafen and quizalofop-ethyl. The water samples were fortified at 0.5 and 1 µg mL⁻¹ levels and analysed at 0 (2 h), 1, 3, 7, 15, 30, 60, 90, 120, 150 days interval. Both the analytical methods were validated following SANTE guideline and fou ...
DOI:
10.1007/s00128-020-02808-x

4. Effect of diesel on the froth stability and its antifoam mechanism in fine coal flotation used MIBC as the frother

Author:
Xu, Mengdi; Xing, Yaowen; Jin, Wei; Li, Ming; Cao, Yijun; Gui, Xiahui
Source:
Powder technology 2020 v.364 pp. 183-188
ISSN:
0032-5910
Subject:
half life,   etc   ; coal; defoaming; drainage; droplets; foaming; foams;     Show all 7 Subjects
Abstract:
... Froth stability is one of the most important factors in fine coal flotation as it significantly affects the separation efficiency. Diesel is always used as the flotation collector while the effect of diesel on the froth stability is less investigated. In this study, effect of diesel on the froth stability and its antifoam mechanism in fine coal flotation used MIBC as the frother was investigated. ...
DOI:
10.1016/j.powtec.2019.12.058

5. SpyTag/SpyCatcher cyclization and covalent immobilization in enhancing cephalosporin C acylase stability

Author:
Wang, Yue; Chang, Yanhong; Jia, Ruiqi; Sun, Hongxu; Tian, JunWei; Luo, Hui; Yu, Huimin; Shen, Zhongyao
Source:
Process biochemistry 2020
ISSN:
1359-5113
Subject:
half life,   etc   ; agarose; cephalosporins; enzymes; lysine; solvents; thermal stability;     Show all 7 Subjects
Abstract:
... A SpyRing cyclized cephalosporin C acylase (SRCCA) was obtained by fusing SpyTag and SpyCatcher to the N- and C- termini of cephalosporin C acylase (CCA), respectively. The results suggested that the introduction of the SpyRing (head-to-tail cyclization via SpyTag and SpyCatcher) did not affect the active center of the SRCCA (the specific activities of CCA and SRCCA are 15.71 U/mg and 13.11 U/mg, ...
DOI:
10.1016/j.procbio.2020.02.019

6. Artificial and natural radionuclides in cryoconite as tracers of supraglacial dynamics: Insights from the Morteratsch glacier (Swiss Alps)

Author:
Baccolo, Giovanni; Nastasi, Massimiliano; Massabò, Dario; Clason, Caroline; Di Mauro, Biagio; Di Stefano, Elena; Łokas, Edyta; Prati, Paolo; Previtali, Ezio; Takeuchi, Nozomu; Delmonte, Barbara; Maggi, Valter
Source:
Catena 2020 v.191 pp. 104577
ISSN:
0341-8162
Subject:
half life,   etc   ; glaciers; hydrology; inorganic carbon; radioactivity; radionuclides; sediments; tracer techniques; Alps region; Switzerland;     Show all 10 Subjects
Abstract:
... Cryoconite, a sediment found on the surface of glaciers, is known for its ability to accumulate radionuclides. New data on cryoconite from the Morteratsch glacier (Switzerland) are presented to shed light on the mechanisms that control the distribution of radioactivity in cryoconite. Among the radionuclides detected in our samples, we have identified ¹⁰⁸ᵐAg, an artificial species which has never b ...
DOI:
10.1016/j.catena.2020.104577

7. Microbial degradation of two highly persistent fluorinated fungicides - epoxiconazole and fludioxonil

Author:
Alexandrino, Diogo A.M.; Mucha, Ana P.; Almeida, C. Marisa R.; Carvalho, Maria F.
Source:
Journal of hazardous materials 2020 v.394 pp. 122545
ISSN:
0304-3894
Subject:
half life,   etc   ; Comamonas; Ochrobactrum; Pseudomonas; agricultural soils; biodegradation; bioremediation; ecosystems; estuaries; fludioxonil; sediments;     Show all 11 Subjects
Abstract:
... Biodegradation of two highly persistent fluorinated fungicides, epoxiconazole (EPO) and fludioxonil (FLU), by microbial consortia enriched from estuarine sediment and agricultural soil is reported. After an enrichment period of 6 months, four microbial consortia were able to completely remove and defluorinate the fungicides in co-metabolic conditions. Defluorination was biologically mediated and r ...
DOI:
10.1016/j.jhazmat.2020.122545

8. Degradation and transformation of nitrated nonylphenol isomers in activated sludge under nitrifying and heterotrophic conditions

Author:
Wang, Yongfeng; Shan, Jun; Zhao, Yingying; Li, Fangjie; Corvini, Philippe F.-X.; Ji, Rong
Source:
Journal of hazardous materials 2020 v.393 pp. 122438
ISSN:
0304-3894
Subject:
half life,   etc   ; activated sludge; endocrine-disrupting chemicals; isomers; metabolites; microbial communities; mineralization; nonylphenols; risk; toxicity;     Show all 10 Subjects
Abstract:
... Nitrated nonylphenols (2-nitro-nonylphenols, NNPs) are metabolites of the endocrine-disrupter nonylphenols (NPs). While they have been detected in the environment, their fate in activated sludge has yet to be determined. In this study, we used synthesized NNP isomers and a ¹⁴C-tracer technique to study the degradation and transformation of four NNP isomers (NNP₁₁₁, NNP₁₁₂, NNP₃₈, and NNP₆₅) in nit ...
DOI:
10.1016/j.jhazmat.2020.122438

9. Fate of 4-bromodiphenyl ether (BDE3) in soil and the effects of co-existed copper

Author:
Yao, Yao; Wang, Bin; He, Yujie; Wang, Lianhong; Corvini, Philippe F.-X.; Ji, Rong
Source:
Environmental pollution 2020 v.261 pp. 114214
ISSN:
0269-7491
Subject:
half life,   etc   ; biodegradability; carbon dioxide; copper; hydroxylation; metabolism; metabolites; mineralization; polybrominated diphenyl ethers; risk; soil; toxicity;     Show all 12 Subjects
Abstract:
... The quantitative fate of polybrominated diphenyl ethers (PBDEs) in soil is unknown. Furthermore, the effects of co-contamination by toxic copper on the behavior of PBDEs have not been investigated. Using a ¹⁴C-tracer, we studied mineralization, metabolism, and formation of non-extractable residues (NERs) of one PBDE congener, i.e., the 4-bromodiphenyl ether (BDE3) in oxic soil for 50 days, without ...
DOI:
10.1016/j.envpol.2020.114214

10. Rare observation of atmospheric 65Zn, 134Cs and 137Cs with possible relation to the 12 February 2013 test announced by North Korea

Author:
Park, Hongmo
Source:
Journal of environmental radioactivity 2020 v.217 pp. 106220
ISSN:
0265-931X
Subject:
half life,   etc   ; cesium radioisotopes; fractionation; fuels; radioactivity; uranium; zinc; North Korea;     Show all 8 Subjects
Abstract:
... Abnormal particulate radionuclides (⁶⁵Zn, ¹³⁴Cs and ¹³⁷Cs) were detected at the CTBTO RN58 station which is located near North Korea between 12 and March 14, 2016. Detection ratio for caesium (¹³⁴Cs/¹³⁷Cs) shows that the product origin was nuclear explosion and dilution factors at RN58, released from DPRK test site, show clear correlation with radioactivity concentration of two samples. The detect ...
DOI:
10.1016/j.jenvrad.2020.106220

11. Serum elimination half-lives adjusted for ongoing exposure of tri-to hexabrominated diphenyl ethers: Determined in persons moving from North America to Australia

Author:
Sjödin, Andreas; Mueller, Jochen F.; Jones, Richard; Schütze, Andre; Wong, Lee-Yang; Caudill, Samuel P.; Harden, Fiona A.; Webster, Thomas F.; Toms, Leisa-Maree
Source:
Chemosphere 2020 v.248 pp. 125905
ISSN:
0045-6535
Subject:
half life,   etc   ; Monte Carlo method; blood serum; humans; polybrominated diphenyl ethers; students; uncertainty; Australia; United States;     Show all 9 Subjects
Abstract:
... The objective of the study was to determine the human serum elimination half-life of polybrominated diphenyl ethers (PBDEs) adjusted for ongoing exposure in subjects moving from a higher exposure region (North America) to a lower exposure region (Australia).The study population was comprised of exchange students and long-term visitors from North America moving to Brisbane, Australia (N = 27) and l ...
DOI:
10.1016/j.chemosphere.2020.125905

12. Tylosin degradation during manure composting and the effect of the degradation byproducts on the growth of green algae

Author:
Kamei-Ishikawa, Nao; Maeda, Takeki; Soma, Misaki; Yoshida, Naoto; Sameshima, Yota; Sasamoto, Makoto; Higashiyama, Yumi; Touno, Eiko; Ito, Ayumi
Source:
The Science of the total environment 2020 v.718 pp. 137295
ISSN:
0048-9697
Subject:
half life,   etc   ; Selenastrum capricornutum; agricultural land; aquatic environment; byproducts; composting; feces; microorganisms; rain; sheep; temperature; tylosin;     Show all 12 Subjects
Abstract:
... In this study, we investigate the tylosin degradation in sheep feces during composting. The sheep feces containing tylosin were composted using the laboratory-scale composting units. Tylosin was degraded during composting, and the half-life of tylosin degradation decreased with increasing temperature from 40 °C to 65 °C. The tylosin degradation in sheep feces can be attributed to the microorganism ...
DOI:
10.1016/j.scitotenv.2020.137295

13. Factors controlling the degradation of hydrogen peroxide in river water, and the role of riverbed sand

Author:
Ueki, Ryuta; Imaizumi, Yoshitaka; Iwamoto, Yoko; Sakugawa, Hiroshi; Takeda, Kazuhiko
Source:
The Science of the total environment 2020 v.716 pp. 136971
ISSN:
0048-9697
Subject:
half life,   etc   ; diurnal variation; hydrogen peroxide; models; river water; rivers; sand; solar radiation; stream channels; summer;     Show all 10 Subjects
Abstract:
... Diurnal changes of H₂O₂ in river water during mid-summer were investigated. H₂O₂ in river water increased with the increase in intensity of solar radiation in the morning, and reached a maximum at 14:00, although solar radiation reached a maximum around 12:00. In the afternoon, a gradual decrease in H₂O₂ was observed, and H₂O₂ reached a minimum just before sunrise. Degradation rate constants deter ...
DOI:
10.1016/j.scitotenv.2020.136971

14. Intramolecular distance in the conjugate of urate oxidase and fatty acid governs FcRn binding and serum half-life in vivo

Author:
Cho, Jinhwan; Park, Junyong; Kim, Songwon; Kim, Jong Chul; Tae, Giyoong; Jin, Mi Sun; Kwon, Inchan
Source:
Journal of controlled release 2020 v.321 pp. 49-58
ISSN:
0168-3659
Subject:
half life,   etc   ; biopharmaceuticals; blood serum; gout; human diseases; hyperuricemia; ligands; palmitic acid; peptides; serum albumin; therapeutics;     Show all 11 Subjects
Abstract:
... Therapeutic proteins are indispensable for treatment of various human diseases. However, intrinsic short serum half-lives of proteins are still big hurdles for developing new therapeutic proteins or expanding applications of existing ones. Urate oxidase (Uox) is a therapeutic protein clinically used for treatment of hyperuricemia. Due to its short half-life, its application for gout treatment requ ...
DOI:
10.1016/j.jconrel.2020.01.034

15. Enhanced biodegradation of n-Hexadecane in solid-phase of soil by employing immobilized Pseudomonas Aeruginosa on size-optimized coconut fibers

Author:
Hajieghrari, Mahdiyeh; Hejazi, Parisa
Source:
Journal of hazardous materials 2020 v.389 pp. 122134
ISSN:
0304-3894
Subject:
half life,   etc   ; Pseudomonas aeruginosa; aeration; bacteria; biodegradation; bioremediation; biosurfactants; coir; equations; hexadecane; mixing; particle size; soil;     Show all 13 Subjects
Abstract:
... In this research, biodegradation of hexadecane as a model contaminant in solid soil using both free and immobilized Pseudomonas Aeruginosa, capable of producing biosurfactant, was investigated. Coconut fibers in three mesh sizes were used as a cellulosic biocarrier for immobilization procedure. Bioremediation experiments were monitored for 60 days after incubation at 27 °C in small columns, contai ...
DOI:
10.1016/j.jhazmat.2020.122134

16. Reproducible quantification of IgG uptake at endogenous and overexpressed FcRn levels at pH 7.4: Comparison of a wild type IgG and a stronger FcRn binding variant

Author:
Zhang, Jianhuan; Vernes, Jean-Michel; Wen, Xiaohui; Oh, Ernest; Scales, Suzie J.; Meng, Y. Gloria
Source:
Journal of immunological methods 2020 v.480 pp. 112767
ISSN:
0022-1759
Subject:
half life,   etc   ; antibodies; colorectal neoplasms; cytotoxicity; drugs; immunoglobulin G; neoplasm cells; recycling;     Show all 8 Subjects
Abstract:
... IgG antibodies have been used to treat many diseases including cancer. IgG antibody-drug conjugates (ADCs) deliver cytotoxic drugs to target cells for cell elimination, but they have dose limiting toxicity due to target-independent uptake, including pinocytotic uptake. Neonatal Fc receptor (FcRn) recycles pinocytosed IgG in a pH-dependent manner and is the receptor responsible for the long half-li ...
DOI:
10.1016/j.jim.2020.112767

17. The mineralization process of insoluble elastin fibrillar structures: Ionic environment vs degradation

Author:
Boraldi, Federica; Moscarelli, Pasquale; Lofaro, Francesco Demetrio; Sabia, Carla; Quaglino, Daniela
Source:
International journal of biological macromolecules 2020 v.149 pp. 693-706
ISSN:
0141-8130
Subject:
half life,   etc   ; adsorption; calcification; calcium; connective tissues; elastin; hydrolysis; hydroxyapatite; magnesium; mineralization; pH; phosphorus; potassium; sodium;     Show all 14 Subjects
Abstract:
... Despite its long half-life and physiological role, elastin undergoes irreversible changes (i.e elastolysis and/or calcification) impairing resilience of soft connective tissues. At present, it is still undefined: 1) to which extent elastin fibers have to be fragmented in order to increase their susceptibility to calcify; 2) which is the contribution of ionic environment on elastin mineralization; ...
DOI:
10.1016/j.ijbiomac.2020.01.250

18. Dynamics of pertussis toxin IgG after symptomatic pertussis in children and adults

Author:
Jõgi, Piia; Soeorg, Hiie; Oona, Marje; Kaart, Tanel; Toompere, Karolin; Maskina, Tereza; Koort, Iris; Rätsep, Anneli; Lutsar, Irja
Source:
Vaccine 2020 v.38 no.16 pp. 3196-3200
ISSN:
0264-410X
Subject:
half life,   etc   ; adults; children; cough; etiology; immunoglobulin G; patients; pertussis toxin; polymerase chain reaction; serology; vaccines;     Show all 11 Subjects
Abstract:
... The knowledge of dynamics of pertussis toxin (PT)-IgG after pertussis and the appropriate diagnostic cut-off value is limited. We aimed to describe the dynamics of PT-IgG in children and adults up to three years after symptomatic pertussis.Patients with persistent cough of unknown aetiology were prospectively enrolled 2012–2014. Pertussis was confirmed by culture, PCR and/or serology. The follow-u ...
DOI:
10.1016/j.vaccine.2020.02.080

19. Long term investigation of ¹³⁷Cs in chicken meat and eggs from northwest Croatia

Author:
Franić, Zdenko; Branica, Gina; Petrinec, Branko; Marović, Gordana
Source:
Journal of environmental science and health 2020 v.55 no.4 pp. 382-387
ISSN:
1532-4109
Subject:
half life,   etc   ; accidents; adults; cesium radioisotopes; chicken meat; chickens; eggs; humans; monitoring; Croatia;     Show all 10 Subjects
Abstract:
... This paper presents the results of long-term investigations of ¹³⁷Cs activity concentrations in chicken meat and eggs from northwest Croatia for the period 1987–2018. The research has been done as a part of monitoring program of radioactive contamination in Croatia. The highest activity concentrations in both of these foodstuffs were measured in 1987 and have been decreasing exponentially ever sin ...
DOI:
10.1080/03601234.2019.1706373

20. A porous-cross linked enzyme aggregates of maltogenic amylase from Bacillus lehensis G1: Robust biocatalyst with improved stability and substrate diffusion

Author:
Nawawi, Noor Namirah; Hashim, Zanariah; Manas, Nor Hasmaliana Abdul; Azelee, Nur Izyan Wan; Illias, Rosli Md
Source:
International journal of biological macromolecules 2020 v.148 pp. 1222-1231
ISSN:
0141-8130
Subject:
half life,   etc   ; Citrus; amylases; beta-cyclodextrin; biocatalysts; catalytic activity; chitosan; crosslinking; kinetics; pH stability; pectins;     Show all 11 Subjects
Abstract:
... Enzymatic synthesis of maltooligosaccharides is hampered due to lack of stability of soluble enzyme. This limitation can be tackled by cross linked enzyme aggregates (CLEAs) immobilization approach. However, substrate diffusion is a major bottleneck in cross linking technology. Herein, CLEAs of maltogenic amylase from Bacillus lehensis G1 (Mag1) was developed with addition of porous agent (Mag1-p- ...
DOI:
10.1016/j.ijbiomac.2019.10.101