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1. Toward Full Zigzag-Edged Nanographenes: peri-Tetracene and Its Corresponding Circumanthracene

Author:
Ajayakumar, M. R.; Fu, Yubin; Ma, Ji; Hennersdorf, Felix; Komber, Hartmut; Weigand, Jan J.; Alfonsov, Alexey; Popov, Alexey A.; Berger, Reinhard; Liu, Junzhi; Müllen, Klaus; Feng, Xinliang
Source:
Journal of the American Chemical Society 2018 v.140 no.20 pp. 6240-6244
ISSN:
1520-5126
Subject:
half life,   etc   ; electrochemistry; electronics; energy;     Show all 4 Subjects
Abstract:
... Zigzag-edged nanographene with two rows of fused linear acenes, called as n-peri-acene (n-PA), is considered as a potential building unit in the arena of organic electronics. n-PAs with four (peri-tetracene, 4-PA), five (peri-pentacene, 5-PA) or more benzene rings in a row have been predicted to show open-shell character, which would be attractive for the development of unprecedented molecular spi ...
DOI:
10.1021/jacs.8b03711

2. Residue and distribution of triforine in different cultivars and fruit periods of watermelon under field conditions

Author:
Li, Y.M.; Li, Z.H.; Huang, R.L.; Wang, S.Y.; Zhang, Z.X.
Source:
Ecotoxicology and environmental safety 2018 v.156 pp. 428-433
ISSN:
0147-6513
Subject:
half life,   etc   ; cultivars; gas chromatography; triforine; watermelons;     Show all 5 Subjects
Abstract:
... The dissipation of triforine in the immature and mature fruit periods was investigated under field conditions. Residue levels of triforine in watermelon were determined by gas chromatography with an electron capture detector (GC-ECD). The decline curves of triforine residues in the watermelon corresponded with first-order kinetics. The half-lives of triforine in Dark Belle and Shiny Boy were 2.10– ...
DOI:
10.1016/j.ecoenv.2018.03.026

3. Alanine scan of sialorphin and its hybrids with opiorphin: synthesis, molecular modelling and effect on enkephalins degradation

Author:
Sobocińska, Małgorzata; Giełdoń, Artur; Fichna, Jakub; Kamysz, Elżbieta
Source:
Amino acids 2018 v.50 no.8 pp. 1083-1088
ISSN:
0939-4451
Subject:
half life,   etc   ; alanine; drug design; enkephalin; hydrophilicity; peptidases;     Show all 6 Subjects
Abstract:
... Enkephalins are involved in a number of physiological processes. However, these peptides are quickly degraded by peptidases, e.g. the neutral endopeptidase (NEP). Inhibition of the enzymatic degradation of enkephalins is one of the possible approaches to prolong their activity. Selective inhibitor of NEP, sialorphin, is the attractive lead compound for enkephalins degradation studies. In this work ...
DOI:
10.1007/s00726-018-2585-8

4. Catabolic profiles dynamics during the bioremediation process of chlorimuron-ethyl contaminated soil by Methanolivorans CHL1T

Author:
Yang, Liqiang; Li, Xinyu; Li, Xu; Su, Zhencheng; Zhang, Chenggang; Zhang, Huiwen
Source:
Ecotoxicology and environmental safety 2018 v.155 pp. 43-49
ISSN:
0147-6513
Subject:
half life,   etc   ; bioaugmentation; cell respiration; chlorimuron ethyl; polluted soils;     Show all 5 Subjects
Abstract:
... Excessive application of the long-term herbicide chlorimuron-ethyl has resulted in series of environmental problems. Bioaugmentation usually a useful method in contaminated-environment remediation. In this study, the strain Methanolivorans CHL1ᵀ with highly chlorimuron-ethyl degrading efficiency was employed to assess its remediation effects on chlorimuron-ethyl-contaminated soil. The chlorimuron- ...
DOI:
10.1016/j.ecoenv.2018.02.004

5. Modelling the isothermal degradation kinetics of metrafenone and mepanipyrim in a grape juice analog

Author:
López-Fernández, Olalla; Pose-Juan, Eva; Yáñez, Remedios; Rial-Otero, Raquel; Simal-Gándara, Jesús
Source:
Food research international 2018 v.108 pp. 339-346
ISSN:
0963-9969
Subject:
half life,   etc   ; grape juice; mepanipyrim; models; monitoring; photolysis;     Show all 6 Subjects
Abstract:
... Five photodegradation products of metrafenone (MTF) and six of mepanipyrim (MEP) were identified in synthetic grape juice at 25 °C and the structures of the main reaction products established. The degradation of MTF and MEP was modelled by using three different strategies involving monitoring (a) the disappearance of the parent compound, (b) the conversion of the parent compound into its main stru ...
DOI:
10.1016/j.foodres.2018.03.058

6. Pharmacokinetics, disposition, and plasma concentrations of dimethyl sulfoxide (DMSO) in the horse following topical, oral, and intravenous administration

Author:
Soma, L. R.; Robinson, M. A.; You, Y.; Boston, R. C.; Rudy, J.
Source:
Journal of veterinary pharmacology and therapeutics 2018 v.41 no.3 pp. 384-392
ISSN:
0140-7783
Subject:
half life,   etc   ; dimethyl sulfoxide; horses; intravenous injection; models; pharmacokinetics;     Show all 6 Subjects
Abstract:
... Compartmental models were used to investigate the pharmacokinetics of intravenous (i.v.), oral (p.o.), and topical (TOP) administration of dimethyl sulfoxide (DMSO). The plasma concentration–time curve following a 15‐min i.v. infusion of DMSO was described by a two‐compartment model. Median and range of alpha (t₁/₂α) and beta (t₁/₂ᵦ) half‐lives were 0.029 (0.026–0.093) and 14.1 (6.6–16.4) hr, resp ...
DOI:
10.1111/jvp.12476

7. Ultrastable and High Ion-Conducting Polyelectrolyte Based on Six-Membered N-Spirocyclic Ammonium for Hydroxide Exchange Membrane Fuel Cell Applications

Author:
Chen, Nanjun; Long, Chuan; Li, Yunxi; Lu, Chuanrui; Zhu, Hong
Source:
ACS applied materials & interfaces 2018 v.10 no.18 pp. 15720-15732
ISSN:
1944-8252
Subject:
half life,   etc   ; electrolytes; fuel cells; materials science; solvents;     Show all 5 Subjects
Abstract:
... In response to prepare high-stable and ion-conducting polyelectrolyte for hydroxide exchange membrane (HEM) applications, we present an ultrastable polyelectrolyte based on six-membered heterocyclic 6-azonia-spiro[5.5]undecane (ASU) and polyphenyl ether (PPO). A series of ASU-functionalized PPO polyelectrolytes (ASU–PPO), which can be easily dissolved in low-boiling pointing solvent, have been suc ...
DOI:
10.1021/acsami.8b02884

8. Anaerobic biotransformation of N‐methyl perfluorobutanesulfonamido ethanol and N‐ethyl perfluorooctanesulfonamido ethanol

Author:
Lange, Cleston C.
Source:
Environmental toxicology and chemistry 2018 v.37 no.3 pp. 768-779
ISSN:
0730-7268
Subject:
half life,   etc   ; acetates; anaerobic digesters; biodegradation; biotransformation; ethanol; methanogens; sludge;     Show all 8 Subjects
Abstract:
... Some fluorochemical products are manufactured using N‐methyl perfluorobutanesulfonamido ethanol (MeFBSE), a short‐chain replacement for perfluorooctyl‐based chemistries N‐methyl and N‐ethyl perfluorooctanesulfonamido ethanols (EtFOSE). The present study shows for the first time the anaerobic biodegradation of MeFBSE and EtFOSE in municipal digester sludge under methanogenic conditions. Both MeFBSE ...
DOI:
10.1002/etc.4014

9. A New Concentration Jump Strategy Reveals the Lifetime of i-Motif at Physiological pH without Force

Author:
Jonchhe, Sagun; Shrestha, Prakash; Ascencio, Katia; Mao, Hanbin
Source:
Analytical chemistry 2018 v.90 no.5 pp. 3205-3210
ISSN:
1520-6882
Subject:
half life,   etc   ; DNA; humans; mixing; pH; proteins; telomeres; transportation;     Show all 8 Subjects
Abstract:
... Concentration jumps for kinetics measurement remain a challenge for single-molecule techniques, which have demonstrated superior signal-to-noise levels compared to ensemble average approaches. Currently, all concentration jumps use mixing strategies. Here, we report a simple and drastically different jump strategy by rapid transportation of molecules between two side-by-side laminar streams in 80 ...
DOI:
10.1021/acs.analchem.7b04661

10. The effect of nanoparticle aggregation on surfactant foam stability

Author:
AlYousef, Zuhair A.; Almobarky, Mohammed A.; Schechter, David S.
Source:
Journal of colloid and interface science 2018 v.511 pp. 365-373
ISSN:
0021-9797
Subject:
half life,   etc   ; bubbles; foams; mixing; nanoparticles; nonionic surfactants; silica; viscosity;     Show all 8 Subjects
Abstract:
... The combination of nanoparticles (NPs) and surfactant may offer a novel technique of generating stronger foams for gas mobility control. This study evaluates the potential of silica NPs to enhance the foam stability of three nonionic surfactants. Results showed that the concentration of surfactant and NPs is a crucial parameter for foam stability and that there is certain concentrations for strong ...
DOI:
10.1016/j.jcis.2017.09.051

11. Evaluation of the effect of quercetin treatment on CYP2C9 enzyme activity of diclofenac in healthy human volunteers

Author:
Bedada, Satish Kumar; Neerati, Prasad
Source:
Phytotherapy research 2018 v.32 no.2 pp. 305-311
ISSN:
0951-418X
Subject:
half life,   etc   ; confidence interval; diclofenac; drugs; humans; pharmacokinetics; quercetin;     Show all 7 Subjects
Abstract:
... The purpose of present study was to evaluate the effect of quercetin on pharmacokinetics of diclofenac sodium (DIC) in healthy volunteers. The open‐label, 2 period, sequential study was conducted in 12 healthy volunteers. DIC 100 mg was administered during control and after quercetin phases. Quercetin 500 mg was administered twice daily for 10 days during quercetin phase. Treatment with quercetin ...
DOI:
10.1002/ptr.5978

12. Expanding the application scope of on-farm biopurification systems: Effect and removal of oxytetracycline in a biomixture

Author:
Jiménez-Gamboa, David; Castro-Gutiérrez, Víctor; Fernández-Fernández, Ericka; Briceño-Guevara, Susana; Masís-Mora, Mario; Chin-Pampillo, Juan Salvador; Mora-López, Marielos; Carazo-Rojas, Elizabeth; Rodríguez-Rodríguez, Carlos E.
Source:
Journal of hazardous materials 2018 v.342 pp. 553-560
ISSN:
0304-3894
Subject:
half life,   etc   ; bacteria; bacterial communities; carbofuran; fungi; mineralization; oxytetracycline; wastewater;     Show all 8 Subjects
Abstract:
... Antibiotic-containing wastewaters produced in agricultural activities may depress the pesticide-degrading capacity of biomixtures contained in biopurification systems. This work aimed to assay the effect of oxytetracycline (OTC) on the removal of carbofuran (CFN) in an optimized biomixture, and to determine the capacity of the system to dissipate OTC. During co-application of CFN+OTC, CFN removal ...
DOI:
10.1016/j.jhazmat.2017.08.059

13. Concentrations and biological half-life of radioactive cesium in epigeic earthworms after the Fukushima Dai-ichi Nuclear Power Plant accident

Author:
Tanaka, S.; Adati, T.; Takahashi, T.; Fujiwara, K.; Takahashi, S.
Source:
Journal of environmental radioactivity 2018 v.192 pp. 227-232
ISSN:
0265-931X
Subject:
biological half-life; half life,   etc   ; Megascolecidae; accidents; autoradiography; cesium; earthworms; forest ecosystems; intestines; nuclear power; power plants; radioactivity; radionuclides; soil;     Show all 14 Subjects
Abstract:
... To understand the long-term behavior of radiocesium in the biological processes of a forest ecosystem, its concentration in Japanese epigeic earthworms (Megascolecidae), litter, and soil, and the ambient dose equivalent rates, were investigated after the Fukushima Dai-ichi Nuclear Power Plant accident. The metabolism of radiocesium in the earthworms was also investigated in the laboratory, and its ...
DOI:
10.1016/j.jenvrad.2018.06.020

14. Evaluation of the Leaching Potential of Anthranilamide Insecticides Through the Soil

Author:
Vela, Nuria; Pérez-Lucas, Gabriel; Navarro, María J.; Garrido, Isabel; Fenoll, José; Navarro, Simón
Source:
Bulletin of environmental contamination and toxicology 2017 v.99 no.4 pp. 465-469
ISSN:
0007-4861
Subject:
half life,   etc   ; Fluvisols; groundwater; insecticides; leachates; leaching;     Show all 6 Subjects
Abstract:
... The mobility of two relatively new antranilic diamide insecticides, cyanantraniliprole (CY) and cholantraniliprole (CH) in soil was examined, by means of disturbed columns loaded with a typical semiarid Mediterranean soil (Calcaric fluvisol) under laboratory conditions. Both insecticides appeared in leachates, with 52% of CY and 41% of CH of the initial mass added (1 µg g⁻¹) present. For CY, 21% a ...
DOI:
10.1007/s00128-017-2155-x

15. Kinetics of Plasma Cell‐Free DNA and Creatine Kinase in a Canine Model of Tissue Injury

Author:
Wilson, I.J.; Burchell, R.K.; Worth, A.J.; Burton, S.E.; Gedye, K.R.; Clark, K.J.; Crosse, K.R.; Jack, M.; Odom, T.F.; De Grey, S.J.; McGlade, K.M.S.; Tomlin, S.C.; Lopez‐Villalobos, N.; Gal, A.
Source:
Journal of veterinary internal medicine 2018 v.32 no.1 pp. 157-164
ISSN:
0891-6640
Subject:
biological half-life; half life,   etc   ; DNA; anesthesia; animal models; confidence interval; cranial cruciate ligament; creatine kinase; disease severity; dogs; enzyme activity; nucleotide sequences; ovariectomy; people;     Show all 14 Subjects
Abstract:
... BACKGROUND: Cell‐free DNA (cfDNA) comprises short, double‐stranded circulating DNA sequences released from damaged cells. In people, cfDNA concentrations correlate well with disease severity and tissue damage. No reports are available regarding cfDNA kinetics in dogs. OBJECTIVES/HYPOTHESIS: Cell‐free DNA will have a short biological half‐life and would be able to stratify mild, moderate, and sever ...
DOI:
10.1111/jvim.14901

16. Fundamental uncertainty equations for nuclear dating applied to the 140Ba-140La and 227Th-223Ra chronometers

Author:
Pommé, S.; Collins, S.M.; Harms, A.; Jerome, S.M.
Source:
Journal of environmental radioactivity 2016 v.162-163 pp. 358-370
ISSN:
0265-931X
Subject:
half life,   etc   ; equations; radionuclides; uncertainty;     Show all 4 Subjects
Abstract:
... Basic equations for age dating through activity ratio measurements are presented and applied to nuclear chronometers based on parent-daughter decay. Uncertainty propagation formulae are derived which relate the relative uncertainty on the half-lives and measured activity ratios with the relative uncertainty on the calculated time of a nuclear event. Particular attention is paid to the case of rela ...
DOI:
10.1016/j.jenvrad.2016.06.013

17. Decreasing trend of ambient dose equivalent rates over a wide area in eastern Japan until 2016 evaluated by car-borne surveys using KURAMA systems

Author:
Andoh, Masaki; Mikami, Satoshi; Tsuda, Shuichi; Yoshida, Tadayoshi; Matsuda, Norihiro; Saito, Kimiaki
Source:
Journal of environmental radioactivity 2018 v.192 pp. 385-398
ISSN:
0265-931X
Subject:
half life,   etc   ; accidents; air; data collection; land use; nuclear power; power plants; radioactivity; surveys; Japan;     Show all 10 Subjects
Abstract:
... As part of the investigation of the distribution of ambient dose equivalent rates around the Fukushima Dai-ichi Nuclear Power Plant (FDNPP), car-borne surveys using Kyoto University RAdiation MApping (KURAMA) systems have been conducted over a wide area in eastern Japan since 2011. The enormous volume of measurement data collected until 2016, including those until 2012 which were reported in the p ...
DOI:
10.1016/j.jenvrad.2018.07.009

18. Evaluation of ecological half-life of dose rate based on airborne radiation monitoring following the Fukushima Dai-ichi nuclear power plant accident

Author:
Sanada, Yukihisa; Urabe, Yoshimi; Sasaki, Miyuki; Ochi, Kotaro; Torii, Tatsuo
Source:
Journal of environmental radioactivity 2018 v.192 pp. 417-425
ISSN:
0265-931X
Subject:
half life,   etc   ; accidents; air; energy; helicopters; monitoring; nuclear power; power plants; radioactivity; radionuclides; Japan;     Show all 11 Subjects
Abstract:
... Airborne radiation monitoring was conducted in order to evaluate the influence of radionuclides emitted by the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident throughout Japan. Carrying out airborne radiation monitoring using manned and unmanned helicopters, the we have developed and established an analysis method concurrently with the development of this monitoring method. In particular, b ...
DOI:
10.1016/j.jenvrad.2018.07.016

19. Light-excited photoelectrons coupled with bio-photocatalysis enhanced the degradation efficiency of oxytetracycline

Author:
Ding, Rui; Yan, Weifu; Wu, Yan; Xiao, Yong; Gang, Haiyin; Wang, Shuhua; Chen, Lixiang; Zhao, Feng
Source:
Water research 2018 v.143 pp. 589-598
ISSN:
0043-1354
Subject:
half life,   etc   ; biodegradation; microorganisms; oxytetracycline; photocatalysis; photocatalysts; protocols; soil; wastewater treatment;     Show all 9 Subjects
Abstract:
... Intimately coupled photocatalysis and biodegradation (ICPB) is a novel wastewater treatment technique that has potential applications in refractory degradation. This paper reports a synergistic degradation protocol that allowing the transfer of photoelectrons between photocatalysts and microbes without supplementary electron donors or improving the loading rate of the photocatalysts. As a result, ...
DOI:
10.1016/j.watres.2018.06.068

20. Experimental investigation of emulsified oil dispersion on bulk foam stability A Physicochemical and engineering aspects

Author:
Rafati, Roozbeh; Oludara, Opeyemi Kehinde; Sharifi Haddad, Amin; Hamidi, Hossein
Source:
Colloids and surfaces 2018 v.554 pp. 110-121
ISSN:
0927-7757
Subject:
half life,   etc   ; colloids; computer software; droplets; emulsions; foams; gravity; image analysis; oils; salinity; surfactants;     Show all 11 Subjects
Abstract:
... Recently aqueous foams have shown promising results to overcome viscous fingering and gravity segregation problems during gas injection process. However, one of the main challenges is the stability of the foams in the presence of oil bank at the front of injected foam. Oil can penetrate into the foam structure in the form of continuous phase or emulsions which might deteriorate lamellae and platea ...
DOI:
10.1016/j.colsurfa.2018.06.043