Results 231 to 240 of about 881,314 (348)

Edge Sharpness Does Not Vary Between Palaeolithic Flake Technologies, With the Possible Exception of Levallois Débitage

Archaeometry, EarlyView.
ABSTRACT Investigating why hominins adopted particular flake technologies during the Mid‐to‐Late Pleistocene is essential to understanding patterns of lithic innovation. This period witnessed the emergence of Levallois technologies (~350–250 ka) and later blades, each “replacing” earlier forms.
Anna Mika, Alastair Key
wiley   +1 more source

Effects of Polyvinyl Chloride Microplastics on the Reproductive System, Intestinal Structure, and Microflora in Male and Female Mice. [PDF]

Vet Sci
Yang YK, Ge SJ, Su QL, Chen JJ, Wu J, Kang K.   +5 more
europepmc   +1 more source

The Effect of Crown Height and Retentive Height of Abutment on the Fracture Resistance of Fatigued Monolithic Zirconia Anterior Implant Crowns—An In Vitro Study

Clinical Oral Implants Research, EarlyView.
ABSTRACT Objectives This laboratory study investigated the effect of two different retentive heights of Ti‐base abutments (3.5 and 5.5 mm) and crown heights (13 and 16 mm) on the load at failure and survival of monolithic zirconia implant‐supported crowns replacing a maxillary central incisor.
Esha Zahid, Jaafar Abduo, Attila Gergely, Roy Judge, Carolina Perez‐Rodriguez, Joseph Palamara   +5 more
wiley   +1 more source

Cadmium and polyvinyl chloride microplastics induce mitochondrial damage and apoptosis under oxidative stress in duck kidney. [PDF]

Poult Sci
Zou H, Song J, Luo X, Ali W, Li S, Xiong L, Chen Y, Yuan Y, Ma Y, Tong X, Liu Z.   +10 more
europepmc   +1 more source

Glove Reuse Limits in Hair Dyeing: Permeation of p‐Phenylenediamine and Aminophenols Through Natural Rubber Latex and Neoprene After Repeated Washing

Contact Dermatitis, EarlyView.
Disposable glove reuse reduced chemical protection during repeated hair‐dye exposure. Under ASTM F739 testing, natural‐rubber‐latex deteriorated rapidly after one reuse, whereas neoprene performed better initially but also declined over repeated cycles. Wash type had no significant effect. These findings support single‐use only and discourage the reuse
Pei‐Ting Jian, Yu‐Wen Lin
wiley   +1 more source

Inhibition of Peanut (<i>Arachis hypogaea</i> L.) Growth, Development, and Promotion of Root Nodulation Including Plant Nitrogen Uptake Triggered by Polyvinyl Chloride Microplastics. [PDF]

ACS Omega
Halder U, Radharamanan C, Venkatesan K, Perumal S.   +3 more
europepmc   +1 more source

Impact Absorption Power of Polyolefin Fused Filament Fabrication 3D‐Printed Sports Mouthguards: In Vitro Study

Dental Traumatology, Volume 41, Issue 2, Page 213-223, April 2025.
ABSTRACT Background/Aim This study aims to evaluate and compare the impact absorption capacities of thermoformed ethylene vinyl acetate (EVA) mouthguards and 3D‐printed polyolefin mouthguards used in sports dentistry applications. The objective is to determine whether 3D‐printed polyolefin mouthguards offer superior impact toughness compared to ...
Leonardo Mohamad Nassani, Samuel Storts, Irina Novopoltseva, Lauren Ann Place, Matthew Fogarty, Pete Schupska   +5 more
wiley   +1 more source

A Study of Plant-Filled Polymer Composites Based on Highly Plasticized Polyvinyl Chloride. [PDF]

Polymers (Basel)
Samuilova E, Ponomareva A, Sitnikova V, Zhilenkov A, Kichigina O, Uspenskaya M.   +5 more
europepmc   +1 more source

Ultimate Tensile Strength Evaluation of Bi‐Colored Ethylene‐Vinyl Acetate (EVA) Sheets In‐Office Manufactured With Different Heating Protocols

Dental Traumatology, EarlyView.
ABSTRACT Background/Aim Bi‐colored mouthguards (MTG) are often sought by both professional and amateur athletes. Bi‐colored MTG can be made in the dental office from premanufactured bi‐colored EVA sheets or custom‐designed in the dental office for greater color variety.
Luiz Felipe Rodrigues Siqueira, Ângelo Caetano Rodrigues Mathias Pereira, Bruno Felipe Fernandes, Leon Fernando Marques Jaime, Crisnicaw Veríssimo   +4 more
wiley   +1 more source

Adsorption Behavior and Mechanisms of Trihalomethanes onto Virgin and Weathered Polyvinyl Chloride Microplastics. [PDF]

Toxics
Li Y, Neema P, Andrews S.
europepmc   +1 more source