Results 41 to 50 of about 795,490 (279)

Energy-filtered transmission electron microscopy of biological samples on highly transparent carbon nanomembranes

, 2011
Ultrathin carbon nanomembranes (CNM) comprising crosslinked biphenyl precursors have been tested as support films for energy-filtered transmission electron microscopy (EFTEM) of biological specimens.
Beyer, André, Büenfeld, Matthias, Gölzhäuser, Armin, Hampp, Norbert, Kühlbrandt, Werner, Rhinow, Daniel, Turchanin, Andrey, Weber, Nils-Eike   +7 more
core   +1 more source

DNA extraction from museum specimens of parasitic Hymenoptera. [PDF]

, 2012
At the same time that molecular researchers are improving techniques to extract DNA from museum specimens, this increased demand for access to museum specimens has created tension between the need to preserve specimens for maintaining collections and ...
Andersen, Jeremy, MILLS, Nicholas J
core   +2 more sources

Alaska Native people's perceptions, understandings, and expectations for research involving biological specimens [PDF]

International Journal of Circumpolar Health, 2012
Objectives. Members of racially and ethnically diverse groups have been persistently underrepresented in biomedical research in general, possibly due to mistrust with the medical and research community.
Vanessa Y. Hiratsuka, Jennifer K. Brown, Theresa J. Hoeft, Denise A. Dillard   +3 more
doaj   +1 more source

Mitochondrial differentiation, introgression and phylogeny of species in the Tegenaria atrica group (Araneae, Agelenidae) [PDF]

, 2004
The relationships between the three members of the Tegenaria atrica group (T. atrica, T. saeva and T. gigantea) were examined with DNA sequence data from mitochondrial CO1, 16S rRNA, tRNAleu(CUN) and ND1 genes.
Barton, Bensasson, Bilton, Brower, Chamberlin, Clary, Coyne, G. S. OXFORD, Garb, Genetics Computer Group, Gillespie, Gillespie, Halanych, Halanych, Halanych, Harrison, Harvey, Hausdorf, Hedin, Hedin, Hewitt, Hewitt, Hewitt, J. B. SEARLE, Kimura, Locket, Maddison, Mandel, Masta, Masta, Mayr, Medrano, Merrett, Nei, Oxford, Oxford, Oxford, P. J. P. CROUCHER, Parker, Piel, Posada, Prager, Simon, Smith, Sota, Swofford, Taberlet, Tamura, Tan, Tegelström, Thompson, Venanzetti, Vink, Webb, Wilcox, Zehethofer   +55 more
core   +1 more source

Approaches to estimating the universe of natural history collections data [PDF]

, 2010
This contribution explores the problem of recognizing and measuring the universe of specimen-level data existing in Natural History Collections around the world, in absence of a complete, world-wide census or register. Estimates of size seem necessary to
Ariño, Arturo H.
core   +4 more sources

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

A record of fossil shallow-water whale falls from Italy [PDF]

, 2014
Twenty-five Neogene-Quaternary whales hosted in Italian museum collections and their associated fauna were analysed for evidence of whale-fall community development in shallow-water settings.
Allison, Amano, Amano, Bellinzona, Bianucci, Bianucci, Bianucci, Bianucci, Bianucci, Bianucci, Bisconti, Bisconti, Bisconti, Borselli, Braby, Britton, Capellini, Capellini, Caretto, Carmignani, Chicchi, Coleman, Cortesi, Dahlgren, Damarco, Dando, Danise, Danise, Danise, Dominici, Dubilier, Esperante, Fergusson, Ferrero, Glover, Glover, Goedert, Goffredi, Higgs, Higgs, Hogler, Kauffman, Kiel, Kiel, Kiel, Kiel, Kubodera, Lancaster, Lundsten, Marshall, Martill, Martill, Martill, Mojetta, Naganuma, Nesbitt, Owen, Pavlyuk, Portis, Pyenson, Reisdorf, Ricci Lucchi, Richardson, Rouse, Rouse, Sahling, Sarti, Scabelli, Schäfer, Shapiro, Smith, Smith, Smith, Smith, Squires, Strobel, Tarasov, Taylor, Thorson, Trevisan, Vai, Warén   +81 more
core   +2 more sources

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

Toward Imaging Biosensors for Spatial Mapping of Analytes in Macroscopic Specimens

Advanced Sensor Research
Imaging biosensors take advantage of biosensing principles and imaging tools to visualize and map analytes in real specimens. They find applications in environmental monitoring, in situ biomarker detection, food safety, precision agriculture, and ...
Hayelom Dargo Beyene, Pawel L. Urban
doaj   +1 more source

Beyond specimens: linking biological collections, functional ecology and biodiversity conservation

Revista Peruana de Biología, 2018
Several anthropogenic pressures are threatening biodiversity and may increase in the next years, altering ecological processes and ecosystem services. Biological collections offer a rich source of information to develop studies of functional ecology and ...
Dennis Castillo-Figueroa
doaj   +1 more source