Results 71 to 80 of about 836,969 (319)

Polymerase Chain Reaction. Perturbation Theory and Machine Learning Artificial Intelligence‐Experimental Microbiome Analysis: Applications to Ancient DNA and Tree Soil Metagenomics Cases of Study

Advanced Intelligent Systems, EarlyView.
The polymerase chain reaction (PCR).Perturbation Theory and Machine Learning framework integrates perturbation theory and machine learning to classify genetic sequences, distinguishing ancient DNA from modern controls and predicting tree health from soil metagenomic data.
Jose L. Rodriguez, Estefania Ascencio, Jose M. Ageitos, Lucia Feijoo, Shan He, Amirreza Daghighi, Gerardo M. Casanola‐Martin, Cristian R. Munteanu, Santiago Rodriguez Yañez, Alejandro Pazos, Harbil Bediaga, Brenda Durand Ordiales, Raquel Esteban, Ana‐Maria Heres, Jorge Curiel Yuste, Lur Epelde, Bakhtiyor Rasulev, Tomas Gonzalez, Sonia Arrasate, Humberto González‐Diaz   +19 more
wiley   +1 more source

Evolution of ideas about the origin of fossil resins

Мінеральні ресурси України, 2017
The paper deals with evolution of ideas about the origin of fossil resins as physically and chemically individualized organic compounds – pro­ducts of natural processes in the Earth’s crust, biogenic origin and noncrystalline structure.
M. A. Bogdasarov, H. I. Rudko
doaj  

First record of Jacobsoniidae (Coleoptera) on the African continent in Holocene copal from Tanzania: biogeography since the Cretaceous

Scientific Reports, 2023
Neither fossil nor living Jacobsoniidae are found in abundance. Derolathrus cavernicolus Peck, 2010 is recorded here preserved in Holocene copal from Tanzania with an age of 210 ± 30 BP years.
David Peris, Jörg U. Hammel, Chenyang Cai, Mónica M. Solórzano-Kraemer   +3 more
doaj   +1 more source

Evaluation of Mechanical Properties of Phase‐Separated Cellulose Filler/Poly(Lactic Acid)/Elastomer Composites via Microstructure‐Informed Physics Simulation and In Situ Synchrotron X‐Ray Micro‐CT

Journal of Applied Polymer Science, EarlyView.
Phase‐separation microstructure and mechanical properties of a ternary biocomposite evaluated by integrated AFM, AFM‐informed FEM, and in situ X‐ray CT. ABSTRACT This study investigates phase‐separated cellulose filler/poly(lactic acid) (PLA)/elastomer ternary composites to enhance the mechanical performance of bioplastics. Atomic force microscopy (AFM)
Yoshiaki Kawagoe, Kazumasa Sasaki, Yuki Takayama, Keiichi Shirasu, Junsei Aoki, Soya Hayashi, Masayuki Omoto, Makoto Kato, Tomonaga Okabe   +8 more
wiley   +1 more source

In‐vitro puncture experiment using alligator teeth tracks the formation of dental microwear and its association with hardness of the diet

The Anatomical Record, EarlyView.
Abstract With the development of dental microwear texture analysis (DMTA), there has been an increasing application of DMTA for dietary estimation in extant and fossil reptiles, including dinosaurs. While numerous feeding experiments exist for herbivorous mammals, knowledge remains limited for carnivorous reptiles. This study aimed to qualitatively and
K. Usami, M. O. Kubo
wiley   +1 more source

Improved electrical properties, hydrophobicity, and degradability of ortho-vanillin-based epoxy resin: Roles of Schiff base

Polymer Testing
Conventional diglycidyl ether of bisphenol A epoxy resins (DGEBA) are made from non-renewable fossil resources, which caused severe resource waste and environmental issues.
Xiao Peng, Xuetong Zhao, Tingyue Dong, Yuan Yuan, Li Cheng, Lijun Yang, Ruijin Liao   +6 more
doaj   +1 more source

The Miocene Bükkábrány Fossil Forest in Hungary – field observations and project outline [PDF]

, 2008
The oldest, standing forest preserved as wood has been found at Bükkábrány, Hungary. An open-pit mine working Upper Miocene (Pannonian) lignite revealed sixteen stumps, 1.8 to 3.6 m diameter at base, preserved up to 6 m height, standing on top of the ...
Kázmér, Miklós
core  

Histovariability and fossil diagenesis of Pissarrachampsa (Pseudosuchia, Notosuchia, Baurusuchidae) from the Upper Cretaceous of Southeast Brazil

The Anatomical Record, EarlyView.
Abstract Notosuchians were key components of western Gondwanan Cretaceous ecosystems in terrestrial predator niches and exhibited remarkable taxonomic and ecological diversity. Previous research has explored their physiology, metabolism, and histology, revealing varied growth patterns and life history strategies.
Tito Aureliano, Virgínia Maciel, Pedro Victor Buck, Felipe C. Montefeltro, Thiago da S. Marinho, Aline M. Ghilardi   +5 more
wiley   +1 more source

Exceptionally well-preserved vegetal remains from the Upper Cretaceous of "Lo Hueco", Cuenca, Spain [PDF]

, 2012
Vegetal remains are considered labile structures that quickly become decayed in ecosystems. However, certain lignified tissues (woody plants) can largely resist decomposition, becoming sometimes exceptionally well preserved.
Allison, Alvin, Barroso-Barcenilla, Barroso-Barcenilla, Barroso-Barcenilla, Boerjan, Brand, Briggs, Briggs, Callapez, Cambra-Moo, Cambra-Moo, Cambra-Moo, Canfield, Carenas, Chapman, Coruña, Davis, Dix, Fernández-López, Fernández-López, González-Acebrón, Gupta, IAWA Committee, Jurgensen, Jørgensen, Kiel, López-Martínez, MacGinitie, Mann, Marynowski, Moore, Oldham, Ortega, Peyrot, Rich, Rogers, Rogers, Schopf, Schultz, Scott, Segura, Seilacher, Shipman, Spicer, Stach, Sweetman, Swezey, Swift, Talbot, Tegelaar, Uhl, Vilas   +52 more
core   +2 more sources

Fossilization History of Fossil Resin from Jambi Province (Sumatra, Indonesia) Based on Physico-Chemical Studies [PDF]

Minerals, 2018
A unique specimen of fossil resin originating from the Dipterocarpaceae tree family found in Miocene brown coal deposits in Jambi Province (Sumatra, Indonesia) was investigated via microscopic observations, microhardness testing and infrared and Raman spectroscopic methods.
Beata Naglik, Barbara Kosmowska-Ceranowicz, Lucyna Natkaniec-Nowak, Przemysław Drzewicz, Magdalena Dumańska-Słowik, Jakub Matusik, Marian Wagner, Rastislav Milovsky, Paweł Stach, Arkadiusz Szyszka   +9 more
openaire   +1 more source