Results 111 to 120 of about 208,965 (228)

Construction of Polyethyleneimine/Boric Acid‐Functionalized Hollow Mesoporous Silica Toward Flame Retardancy and Mechanical Enhancement of DOPO‐Based Epoxy Resin

Safety Science and Technology, EarlyView.
A functionalized hollow mesoporous silica nanomaterial was prepared and incorporated into a DOPO‐modified flame‐retardant epoxy resin, effectively improving the resin's flame retardancy and mechanical properties. ABSTRACT The inherent flammability of epoxy resin (EP) has limited its widespread application in fields requiring high fire safety ...
Xueying Shan, Jingru Wang, Jiao Gao, Jiayao Jiang, Hanchao Liu, Jinchun Li   +5 more
wiley   +1 more source

Sulfur‐ and Selenium‐Decorated Coumarins: Synthetic Strategies Involving Cyclization and Late‐Stage Functionalization

The Chemical Record, EarlyView.
Two decades of synthetic strategies for sulfur‐, selenium‐decorated coumarins are critically surveyed through 44 literature reports, with particular emphasis on derivatives functionalized at the C‐3 and C‐4 positions. This review reports the direct construction of the coumarin framework through cyclization processes and late‐stage functionalization of ...
Bruna R. Schneider, Laura D. de Avila, Mauricio C. D. F. Xavier, Alex F. C. Flores, Liane K. Soares, Gabriel P. da Costa, Angelita M. Barcellos   +6 more
wiley   +1 more source

Porang Flour-Based Hydrogel as a Vitreous Substitute: Rheological, Optical, and Structural Evaluation for Biomedical Applications

The transparent colloid known as vitreous humor is essential for maintaining the structural stability and optical clarity of the eyeball. Damage to this fluid requires vitreoretinal surgery with substitute materials; however, widely used substitutes such
Sriati Wahyudi, Niniek Fajar Puspita, Risdiana Risdiana, Darminto Darminto, Ivan Rizoputra   +4 more
core   +1 more source

Presence of Nationally Banned Carbamates and Organophosphate Pesticides in Wild Carnivores, Southeastern Brazil

Environmental Toxicology, EarlyView.
ABSTRACT As top predators, terrestrial carnivores face great risk of pesticide exposure and serve as sentinels of environmental contamination. Additionally, terrestrial carnivores are frequently threatened by intentional or secondary poisoning with highly toxic compounds, such as carbamates and organophosphates.
Marina Pellegrino da Silva, Vagner Gonçalves‐Junior, Mauricio Candido da Silva, André Rinaldi Fukushima, Rose Lilian Gasparini‐Morato, Helenice de Souza Spinosa, Ana Carolina Ewbank, Carlos Sacristán, Ana de la Torre, José Luiz Catão‐Dias, Pedro Enrique Navas‐Suárez   +10 more
wiley   +1 more source

Protodesnitazene: The identification and tissue distribution of a new nitazene

Journal of Forensic Sciences, EarlyView.
Abstract Multiple new analogues from the 2‐benzyl benzimidazole or “nitazene” class of drugs have emerged on the drug market in recent years. Nitazenes are highly potent μ‐opioid receptor agonists that present a substantial public health concern due to their elevated risk of severe toxicity in overdose and their significant potential for misuse.
Andrew Griffiths, Nathan Milne, Michelle Johnston, Karen Blakey, Rogan Scott   +4 more
wiley   +1 more source

Comparing clinical laboratory beta‐hydroxybutyrate testing of vitreous humor against toxicological blood analyses in ketoacidosis deaths

Journal of Forensic Sciences, EarlyView.
Abstract Beta‐hydroxybutyrate (BHB) is used in investigations to detect ketoacidotic states. Standard chromatographic methods of analysis of blood have traditionally been used to assess BHB levels. More recently, vitreous humor has been an alternative matrix/body fluid in clinical laboratory testing.
Quinn Basso, Jacqueline Parai, Betty L. C. Chow, Christopher Milroy   +3 more
wiley   +1 more source

In Vivo Assessment of an Antioxidant Hydrogel Vitreous Substitute

Journal of Biomedical Materials Research Part A
ABSTRACTThe vitreous humor undergoes liquefaction with age, resulting in complications that may require a vitrectomy, or surgical removal of the vitreous from the eye. Silicone oil, a common vitreous substitute, lacks properties similar to the natural vitreous. In particular, it lacks antioxidants that may be necessary to reduce oxidative stress in the
Megan M. Allyn, Annie K. Ryan, Grace Rivera, Esther Mamo, Joshua Bopp, Sebastian Martinez Hernandez, Julie Racine, Eric J. Miller, Heather L. Chandler, Katelyn E. Swindle‐Reilly   +9 more
openaire   +2 more sources

GC/MS determination of gabapentin in human plasma and vitreous humor and its application to forensic samples

Journal of Forensic Sciences, EarlyView.
Abstract Gabapentin (GBP) is widely prescribed off‐label, and cases of misuse, abuse, self‐medication, and intentional self‐harm have been reported. This study aimed to develop and validate a simple GC‐MS method for the determination of GBP in plasma and vitreous humor (VH) and to explore the relationship between concentrations in both matrices in ...
Pamela Cabarcos‐Fernández, Inés Sánchez‐Sellero, Iván Álvarez‐Freire, María Jesús Tabernero‐Duque, Ana María Bermejo‐Barrera   +4 more
wiley   +1 more source

Diffusion through the ex vivo vitreal body – Bovine, porcine, and ovine models are poor surrogates for the human vitreous [PDF]

, 2018
The human vitreous humour is a complex gel structure whose composition and physical properties can vary considerably from person to person and also change with age.
Brown, Marc B., Cook, Michael T., Shafaie, Sara, Hutter, Victoria, Chau, David Y.S.   +4 more
core   +2 more sources

Cross-linked oxidated hyaluronic acid for use as a vitreous substitute

[[abstract]]A composition comprising a hydrogel polymer for use as a vitreous substitute for replacing the vitreous humor of an eye is disclosed. The hydrogel polymer comprises oxidated hyaluronic acid and a dihydrazide, in which the dihydrazide cross ...
Lin, FH;Su, WY;Chen, YC;Chen, KH
core