Results 11 to 20 of about 128 (124)

Comparative Transcriptome Analysis During the Seven Developmental Stages of Channel Catfish (Ictalurus punctatus) and Tra Catfish (Pangasianodon hypophthalmus) Provides Novel Insights for Terrestrial Adaptation

Frontiers in Genetics, 2021
Tra catfish (Pangasianodon hypophthalmus), also known as striped catfish, is a facultative air-breather that uses its swim bladder as an air-breathing organ (ABO). A related species in the same order (Siluriformes), channel catfish (Ictalurus punctatus),
Xiaoli Ma, Xiaoli Ma, Mei Shang, Mei Shang, Baofeng Su, Baofeng Su, Anne Wiley, Max Bangs, Max Bangs, Max Bangs, Veronica Alston, Veronica Alston, Rhoda Mae Simora, Rhoda Mae Simora, Rhoda Mae Simora, Mai Thi Nguyen, Nathan J. C. Backenstose, Nathan J. C. Backenstose, Nathan J. C. Backenstose, Anthony G. Moss, Anthony G. Moss, Thuy-Yen Duong, Xu Wang, Xu Wang, Xu Wang, Rex A. Dunham, Rex A. Dunham   +26 more
doaj   +1 more source

Spontaneous Long‐Range Order and Alignment in Phase‐Separated Dynamic Covalent Networks Using Discrete Siloxanes

Angewandte Chemie, EarlyView.
Spontaneously aligned, long‐range hexagonal columnar ordering is obtained in phase‐separated dynamic covalent networks by combining discrete siloxanes and dynamic acylsemicarbazide bonds. The ordered network shows improved (thermo)mechanical properties and creep resistance compared to the disordered network.
Stefan J. D. Maessen, Tymen M. L. van der Leede, Anne B. Spoelstra, Bart W. L. van den Bersselaar, Bas F. M. de Waal, Johan P. A. Heuts, Anja R. A. Palmans   +6 more
wiley   +2 more sources

Label-free automated three-dimensional imaging of whole organs by microtomy-assisted photoacoustic microscopy

Nature Communications, 2017
The state-of-the-art three-dimensional biomedical imaging often requires specific tissue preparation that may alter the physical properties of the specimen causing loss of information. Here Wong et al.
Terence T. W. Wong, Ruiying Zhang, Chi Zhang, Hsun-Chia Hsu, Konstantin I. Maslov, Lidai Wang, Junhui Shi, Ruimin Chen, K. Kirk Shung, Qifa Zhou, Lihong V. Wang   +10 more
doaj   +1 more source

Apoptosis and expression of argyrophilic nucleolus organizer regions in epithelial neoplasms of the larynx

Brazilian Journal of Otorhinolaryngology, 2015
INTRODUCTION: Occurrence of apoptosis and expression of proliferative markers are powerful tools to establish a prognosis in the follow-up of cancer.OBJECTIVE: To evaluate the growth fraction in papillomas and laryngeal squamous cell carcinomas with ...
Christiana Vargas Ribeiro, Anilton Cesar Vasconcelos, José de Souza Andrade Filho   +2 more
doaj   +1 more source

Preparation of Zeolites for TEM Using Microtomy [PDF]

MRS Proceedings, 1987
ABSTRACTThe application of microtomy to Transmission Electron Microscopy (TEM) specimen preparation of zeolite catalysts is explained. Using a new acrylic resin (LR White®) thin sections (≤60 nm) may be cut with relative ease. Although the details described are specific to catalysts, microtomy and the use of the acrylic resin are applicable to any hard
Csencsits, R., Gronsky, R.
openaire   +2 more sources

Dynamic analysis of double-helical gear system considering effect of oil film among meshing teeth

Advances in Mechanical Engineering, 2020
The oil film among meshing teeth is just like a spring-damping element, and it can dominate the friction and meshing characteristics of the gear pair and influence its dynamic performances further.
Minghu Yin, Yahui Cui, Xiangjun Meng, Jinzhong Zuo, Yuhao Qi   +4 more
doaj   +1 more source

Methods and tools for handling, transportation, weighing, and pelletization applied to the initial analysis of volatile components in the Hayabusa2 samples

Earth, Planets and Space, 2022
The Hayabusa2 spacecraft succeeded in sampling and returning materials from the C-type, near-Earth asteroid (162173) Ryugu. As part of the Hayabusa2 Initial Analyses, chemical and isotopic compositions of volatile species were measured.
Ryuji Okazaki, Shinji Yamanouchi, Kazuhiko Shimada, Atsushi Baba, Fumio Kitajima, Toru Yada   +5 more
doaj   +1 more source

Taxonomic study on Lindernia All. (Linderniaceae) from some parts of South Eastern Nigeria

Notulae Scientia Biologicae, 2020
The morpho-anatomical characteristics of Lindernia diffusa var. diffusa-in E. & P., L. oliveriana (Benth.) Wettst. and L. crustacea (L.) F. Muell.) were investigated with a view of providing additional line of evidence in the delimitation of the species ...
Chimezie EKEKE, Chinedum A. OGAZIE, Cornelius O. NICHODEMUS   +2 more
doaj   +1 more source

Laser Microtomy [PDF]

Optik & Photonik, 2007
AbstractThe laser microtome (LMT) has been designed to slice biological tissue and various materials with high precision. The cutting process is performed by ultra short laser pulses in the near infrared region, inducing an optical breakdown below the surface of the material. Biological Tissue can be processed in its native state without prior fixation
openaire   +1 more source

Small and hard seeds: a practical and inexpensive method to improve embedding techniques for light microscopy

Acta Botânica Brasílica, 2014
The traditional techniques employed for embedding plant samples are not suitable for the proper processing of small seeds with hard seed coats. Usually, these seeds are broken off from blocks during microtomy, which limits the technical success of this ...
Rafaella Cardoso Ribeiro, Denise Maria Trombert Oliveira   +1 more
doaj   +1 more source