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halflife, etc ; irradiation; photocatalysis; photolysis; silica; soil; triclosan; Show all 7 Subjects
Abstract:
... Metal oxides play an essential role in the photocatalysis of contaminants and substantially increase in the environment by the engineering production. However, whether emerging contaminants will be produced during photocatalysis of contaminants remains unclear. Here, triclosan (TCS) photodegradation in metal oxides/silica suspensions and particles, simulated as the states of metal oxides in water ...
Andrew Kerr; Erny Sagita; Edward D. H. Mansfield; Tri-Hung Nguyen; Orlagh M. Feeney; Colin W. Pouton; Christopher J.H. Porter; Joaquin Sanchis; Sébastien Perrier
halflife, etc ; drugs; hydrogen; liver; nanotubes; peptides; polymers; Show all 7 Subjects
Abstract:
... Rod-shaped nanoparticles have been identified as promising drug delivery candidates. In this report, the in vitro cell uptake and in vivo pharmacokinetic/bio-distribution behavior of molecular bottle-brush (BB) and cyclic peptide self-assembled nanotubes were studied in the size range of 36–41 nm in length. It was found that BB possessed the longest plasma circulation time (t₁\₂ > 35 h), with the ...
halflife, etc ; o-cresol; photooxidation; quantum mechanics; temperature; toluene; China; Show all 7 Subjects
Abstract:
... Methyl-hydroxy-cyclohexadienyl radicals (OTAs) are the key products of the photooxidation of toluene, with implications for the fate of toluene. Hence, we investigated the photooxidation mechanisms and kinetics of three main OTAs (o-OTA, m-OTA, and p-OTA) with NO₂ using quantum chemical calculations as well as the fate of OTAs under the different concentration ratios of NO₂ and O₂. The mechanism r ...
halflife, etc ; agronomy; doxycycline; enrofloxacin; fluoroquinolones; lighting; mineralization; pH; photolysis; Show all 9 Subjects
Abstract:
... In this work, the dissipation of the antibiotics doxycycline (DC) (from the group of tetracyclines), enrofloxacin (ENR) (a fluoroquinolone), and sulfamethoxypyridazine (SMP) (a sulfonamide) is investigated both under simulated sunlight and in the dark, at three different pH (4.0, 5.5, and 7.2), and in the presence of different salts and humic acids. The results indicate that all three antibiotics ...
halflife, etc ; Lewis bases; absorption; excretion; hydrolysis; metabolism; pH; toxicology; Show all 8 Subjects
Abstract:
... The environmental effects of 4,4’-methylenediphenyl diisocyanate (MDI) are linked with its potential hydrolytic conversion to 4,4’-methylenedianiline (MDA). Likewise, the reactions of MDI with biological macromolecules govern the absorption, distribution, metabolism, and excretion processes associated with sensitization and toxicological effects, and the hydrolytic formation of MDA in the body wou ...
halflife, etc ; Procambarus clarkii; carbon; case studies; nitrogen; rice; stable isotopes; Show all 7 Subjects
Abstract:
... This study collected samples from a 95-day integrated rice–crayfish culture experiment, and determined the stable isotope discrimination factor of the red swamp crayfish (Procambarus clarkii) by using a model method and difference value method. The isotope ratios of P. clarkii and the dietary resources in rice fields and its feeding niche volumes were ‘conservative’ as proposed. This result broadl ...
halflife, etc ; mineralization; radioactivity; radiolabeling; sodium; sorption; surface water; suspended sediment; Show all 8 Subjects
Abstract:
... The persistence assessment of organic chemicals is based on neutral reference substances. Therefore, our study aimed at investigating the influence of a chemical charge on the degradation of organic compounds in a water-sediment system (OECD 308) and surface water (OECD 309). We used radiolabelled 4-n-dodecylbenzenesulfonic acid sodium salt (¹⁴C-DS⁻, anionic), 4-n-dodecylbenzyltrimethylammonium ch ...
halflife, etc ; cleavage (chemistry); mineral water; molecular weight; photochemistry; photoirradiation; seawater; Show all 7 Subjects
Abstract:
... We report the migration of terephthalate and some low molecular weight organic compounds from poly(ethylene terephthalate) (PET) scraps in Milli-Q water and artificial seawater (ASW). The photochemical processes and the subsequent dark reactions were investigated using PET scraps obtained from postconsumer bottles of commercial non‑carbonated mineral water. Concentrations of terephthalate exponent ...
halflife, etc ; Oncorhynchus mykiss; bioavailability; breeding stock; meloxicam; oral administration; pharmacokinetics; Show all 7 Subjects
Abstract:
... The pharmacokinetics and bioavailability of meloxicam were investigated after single intravascular (IV), intramuscular (IM), and oral dose of 1 mg/kg in rainbow trout broodstock at 11 ± 1.2°C. A total of 36 healthy rainbow trout (Oncorhynchus mykiss) broodstock weighing 1.40 ± 0.26 kg was used for the investigation. Plasma concentrations of meloxicam were measured with high‐performance liquid chro ...
halflife, etc ; DNA; cell viability; chemical bonding; guidelines; immunotherapy; lipids; temperature; Show all 8 Subjects
Abstract:
... The cell surface can be engineered with synthetic DNA for various applications ranging from cancer immunotherapy to tissue engineering. However, while elegant methods such as click conjugation and lipid insertion have been developed to engineer the cell surface with DNA, little effort has been made to systematically evaluate and compare these methods. Resultantly, it is often challenging to choose ...
halflife, etc ; antineoplastic activity; cytotoxicity; disulfide bonds; disulfides; doxorubicin; drug therapy; neoplasms; Show all 8 Subjects
Abstract:
... Doxorubicin (DOX) is used as a first-line chemotherapeutic drug, whereas dihydroartemisinin (DHA) also shows a certain degree of antitumor activity. Disulfide bonds (-SS-) in prodrug molecules can be degraded in highly reducing environments. Thus, heterodimer prodrugs of DOX and DHA linked by a disulfide bond was designed and subsequently prepared as reduction-responsive self-assembled nanoparticl ...
halflife, etc ; adsorbents; coordination polymers; equipment; microwave radiation; microwave treatment; phosphates; uranium; Show all 8 Subjects
Abstract:
... Since the emergence of chemical, biological, radiological, and nuclear risks, significant efforts have been made to create efficient personal protection equipment. Recently, metal–organic framework (MOF) materials have emerged as new promising candidates for the capture and degradation of various threats, like chemical warfare agents (CWAs) or radioactive species. Herein, we report a new synthesis ...
halflife, etc ; electrochemistry; herbicides; liquid-air interface; redox potential; risk; temperature; toxicity; Show all 8 Subjects
Abstract:
... Water serves as an inert environment for the dispersion and application of many kinds of herbicides. Viologen compounds, a type of widely used but highly toxic herbicide, are stable in bulk water, whose half-life can be up to 23 weeks in natural water, imposing a severe health risk to mammals. In this study, we present the striking results of the spontaneous and ultrafast reduction-induced degrada ...
halflife, etc ; bentonite; computer software; foams; oils; salinity; sodium; stabilizers; surfactants; temperature; Show all 10 Subjects
Abstract:
... Foam flooding has been widely used as an effective technology to enhance oil recovery. As a thermodynamically unstable system, foam is prone to disproportionation and coalescence especially in high-salt or high-temperature environments, which limits the effective plugging performance in complex reservoirs. In this paper, a commercial anionic-nonionic compound surfactant was used as the foaming age ...
halflife, etc ; green fluorescent protein; human serum albumin; ligands; necrosis; neoplasms; pH; therapeutics; Show all 8 Subjects
Abstract:
... A short in vivo half-life of protein-based therapeutics often restricts successful clinical translation despite their promising efficacy in vitro. As a biocompatible half-life extender, human serum albumin (HSA) has proven effective in some cases. While genetic fusion is well-established for interlinking HSA and a protein payload, it is limited to structurally simple proteins, necessitating new st ...
halflife, etc ; biopolymers; calcium chloride; catalase; gelatin; hydrogels; immobilized enzymes; pH; thermal stability; Show all 9 Subjects
Abstract:
... Hydrogel-based matrix prepared using biopolymers is a new frontier of emerging platforms for enzyme immobilization for biomedical applications. Catalase (CAT) delivery can be effective in inhibiting reactive oxygen species (ROS)-mediated prolongation of the wound healing process. In this study, to improve CAT stability for effective application, gelatin(Gel)–alginate (Alg) biocompatible hydrogel ( ...
halflife, etc ; benzoic acid; computer simulation; epoxides; hydrogen; liquid crystals; reaction mechanisms; toxicity; Show all 8 Subjects
Abstract:
... It is essential to understand the atmospheric fate of liquid crystal monomers (LCMs), an important component in liquid crystal displays (LCDs); however, limited information is available at present. In this study, the atmospheric reaction mechanism, kinetics and toxicity evolution of three fluorinated biphenylethyne LCMs (1,2,3−trifluoro−5−(2−(4−methylphenyl)ethynyl)benzene (m−TEB), 1,2,3−trifluoro ...
halflife, etc ; Japan; United Nations Framework Convention on Climate Change; carbon; inventories; roundwood; Show all 6 Subjects
Abstract:
... In this study, carbon stocks in harvested wood products (HWPs) of buildings in Japan were estimated using the direct inventory method, which is highly accurate, and the flux-data method, which was proposed by the Intergovernmental Panel on Climate Change (IPCC) and is commonly used worldwide. We analyzed the differences between the estimated results and the respective reasons. The results indicate ...
halflife, etc ; acetone; air quality; foams; isopropyl alcohol; methyl chloride; models; risk; toluene; Show all 9 Subjects
Abstract:
... Chemical emissions from two new memory foam mattresses were evaluated in a simulated consumer use environment over the course of 32 days. Passive 12- and 24-h samples (n = 62) were collected for various VOCs. Airborne concentrations of chemicals associated with the mattresses (2-propanol, acetone, chloromethane, toluene, and ΣVOC) peaked during the first day after installation and progressively de ...
halflife, etc ; agroecosystems; aquatic insects; canola; community structure; ecotoxicology; risk; thiamethoxam; wetlands; zooplankton; Show all 10 Subjects
Abstract:
... Thiamethoxam is a neonicotinoid insecticide widely applied in the Canadian Prairies. It has been detected in surface waters of agro-ecosystems, including wetlands, but the potential effects on non-target invertebrate communities in these wetlands have not been well characterized. In an effort to understand better the fate of thiamethoxam in wetlands and the response of invertebrates (zooplankton a ...