Results 101 to 110 of about 41,681 (307)

Enzymatic Identification of the Anthocyanin Pigment of Blackberry [PDF]

Nature, 1956
Karrer and Pieper reported in 1930 that the principal pigment of blackberry, Rubus fructicosus L., was either identical or isomeric with chrysanthemin or cyanidin-3-β-monoglucoside1. They obtained compact polyhedral rhombs of a pigment chloride which was indistinguishable in colour properties from an authentic sample of chrysanthemin chloride, and ...
openaire   +1 more source

A Low‐Cost, Handheld Optical Stiffness Sensor for Minimally Invasive Surgery

Advanced Robotics Research, EarlyView.
A novel handheld stiffness sensor is presented for real‐time tissue stiffness characterization. By simultaneously sensing contact force and tissue deformation, the device enables accurate stiffness quantification without requiring precise manual control. This approach offers a promising solution for intraoperative tumor detection and minimally invasive
Qianyu Ma, Ruxiang Jiang, Kaspar Althoefer, Nicolas Herzig, Hareesh Godaba   +4 more
wiley   +1 more source

The separation and identification of phytoplankton pigments from the adjacent waters of Great Wall Station, Antarctica [PDF]

, 1995
This paper presents separation and identification of the pigments of the phytoplankton samples collected from the adjacent waters (62°12.5'S, 58°53'W - 62°14.5'S, 58°57'W) of Great Wall Station, Antarctica during March 1988 - February 1989 by using thin ...
Peiding, Lu, Fengpeng, Huang, Baohua, Li
core  

Scientific investigation by technical photography, OM, ESEM, XRF, XRD and FTIR of an ancient Egyptian polychrome wooden coffin

Conservar Património, 2017
The focus of this study is to use a multi-analytical approach to map and identify the pigments used on a polychrome wooden coffin (Late Period), as well as to provide a deeper understanding of the painting techniques and the condition of the object ...
Ahmed Abdrabou, Medhat Abdallah, Hussein M. Kamal   +2 more
doaj   +1 more source

Interpretation of Absorption Bands in Airborne Hyperspectral Radiance Data

Sensors, 2009
It is demonstrated that hyperspectral imagery can be used, without atmospheric correction, to determine the presence of accessory phytoplankton pigments in coastal waters using derivative techniques.
W. David Miller, Jeffrey H. Bowles, David B. Gillis, Karl H. Szekielda   +3 more
doaj   +1 more source

A Pentaradial and Bilateral Combined Photoreception System in the Sea Cucumber is Mediated by a Blue Light‐Sensitive R‐Opsin

Advanced Science, EarlyView.
The sea cucumber Holothuria leucospilota detects blue and adjacent wavelengths of light via an r‐opsin with a maximum absorption at 459 nm. In the oral tentacles, papillae, and tube feet, distinct light‐sensing structures with specialized morphologies are formed, constituting a unique pentaradial and bilateral combined photoreception system.
Jiasheng Huang, Chunhua Ren, Zhou Qin, Yimeng Cui, Bingbing Zhang, Peng Luo, Xuan Wang, Yaoqi Xie, Xin Zhang, Aifen Yan, Yang Zhang, Dingding Fan, Yang Liu, Wenjie Pan, Xiao Jiang, Lihong Yuan, Haipeng Qin, David M. Irwin, Chaoqun Hu, Yang Liu, Ting Chen   +20 more
wiley   +1 more source

Identification of Pigment Cell Antigens Defined by Vitiligo Antibodies

Journal of Investigative Dermatology, 1992
Patients with vitiligo have circulating antibodies to pigment cells. To characterize this response further and to identify the antigens defined by vitiligo antibodies, sera of 23 patients with vitiligo and 22 patients with unrelated conditions were analyzed by immunoprecipitation and SDS-PAGE analysis of 125I-labeled cell antigens on pigment and ...
Cui, Jian, Harning, Ronald, Henn, Milagros, Bystryn, Jean-Claude   +3 more
openaire   +2 more sources

Solid Harmonic Wavelet Bispectrum for Image Analysis

Advanced Science, EarlyView.
The Solid Harmonic Wavelet Bispectrum (SHWB), a rotation‐ and translation‐invariant descriptor that captures higher‐order (phase) correlations in signals, is introduced. Combining wavelet scattering, bispectral analysis, and group theory, SHWB achieves interpretable, data‐efficient representations and demonstrates competitive performance across texture,
Alex Brown, Mathilda Avirett‐Mackenzie, Carolin Villforth, Georgios Exarchakis   +3 more
wiley   +1 more source

eQTL Meta‐Analysis Reveals Conserved and Population‐Specific Regulatory Variation Underlying Nutritional Trait Evolution and Domestication in Tomato

Advanced Science, EarlyView.
A comprehensive meta‐analysis of expression quantitative trait loci (eQTLs) across five diverse tomato populations reveals a high‐resolution atlas of transcriptional regulation and uncovers conserved and population‐specific regulatory architectures underlying fruit nutritional quality traits, including flavonoids, sugars, organic acids, carotenoids ...
Jiantao Zhao, Xin Wang, Jing Zhang, Ryan McQuinn, Je Min Lee, Itay Gonda, Ari Feder, Yimin Xu, Baike Wang, Qinghui Yu, Denise M. Tieman, Sanwen Huang, Harry Klee, James J. Giovannoni, Zhangjun Fei   +14 more
wiley   +1 more source

Miniaturized Bidirectional Thermal Stimulation System Integrated With an Electrode Array for Recording Neural Activities

Advanced Science, EarlyView.
This study presents a miniaturized bidirectional thermal stimulation system integrated with an electrode array enabling real‐time, bidirectional modulation and simultaneous recording of neural activity through localized heating and cooling. By monolithic integration of the Peltier element and with a silicon neural probe, the innovative system allows ...
Zoia Naumkina, Kanghwan Kim, Wesley Charles Smith, Keuntae Kim, Shinwoo Lee, Jiwan Woo, Il‐Joo Cho   +6 more
wiley   +1 more source