Results 61 to 70 of about 131,666 (230)

Mechanistic Origin of Photodegradation and Impurity Effects in Donor–Acceptor Luminescent Radicals

Advanced Optical Materials, EarlyView.
Purification‐dependent impurities distort the apparent optical and analytical data of TTM‐based radicals without altering their intrinsic photophysical properties. Carbazole attachment elevates the activation barrier of the photodegradation pathway, offering design principles for achieving more robust luminescent radical materials.
Takuya Hosokai, Wataru Ota, Kenshiro Matsuda, Hikaru Ishii, Amane Niwa, Yasuo Nakayama, Keisuke Nakamura, Daiki Asakawa, Emiko Fujiwara, Tohru Sato, Ken Albrecht   +10 more
wiley   +1 more source

Graphs with a given conditional diameter that maximize the Wiener index

AIMS Mathematics
The Wiener index $ W(G) $ of a graph $ G $ is one of the most well-known topological indices, which is defined as the sum of distances between all pairs of vertices of $ G $.
Junfeng An , Yingzhi Tian
doaj   +1 more source

The effects of environmental and soil fertility factors on plant species diversity in Kilim Geoforest Park, Langkawi, Malaysia [PDF]

, 2013
Mangroves contain significant biodiversity and are highly valuable for coastal communities for their daily life and ecotourism attractions. It was observed that appropriate environmental and soil factors are important for conducive growth of mangroves ...
Abdu, Arifin, Ghazali, Fatheen Nabila, Ibrahim, Faridah Hanum, Wan Mohd, Wan Razali   +3 more
core  

Accelerating Luminescence in Nanostructures: Exploring the Physical Limits and Impact of Ultrafast Emission in Nanoscale Materials

Advanced Photonics Research, EarlyView.
This review highlights recent advances in accelerating luminescence in nanostructures through cooperative emission, resonator coupling, and nonlocal light–matter interactions. By unifying concepts such as excitonic superradiance, superfluorescence, and the plasmonic Purcell effect, it reveals physical limits of ultrafast emission and their potential ...
Masaaki Ashida, Koichi Okamoto, Takuya Matsuda, Hajime Ishihara   +3 more
wiley   +1 more source

On a relation between Szeged and Wiener indices of bipartite graphs [PDF]

Transactions on Combinatorics, 2012
Hansen et. al., using the AutoGraphiX software package, conjectured that the Szeged index Sz(G) and the Wiener index W(G) of a connected bipartite graph G with n ≥ 4 vertices and m ≥ n edges, obeys the relation Sz(G) − W(G) ≥ 4n − 8. Moreover, this bound
Ivan Gutman, Mengmeng Liu, Xueliang Li, Lilly Chen   +3 more
doaj  

Cacti with Extremal PI Index [PDF]

, 2016
The vertex PI index $PI(G) = \sum_{xy \in E(G)} [n_{xy}(x) + n_{xy}(y)]$ is a distance-based molecular structure descriptor, where $n_{xy}(x)$ denotes the number of vertices which are closer to the vertex $x$ than to the vertex $y$ and which has been the
Wang, Chunxiang, Wang, Shaohui, Wei, Bing   +2 more
core   +1 more source

Midbrain PAG Astrocytes Modulate Mouse Defensive and Panic‐Like Behaviors

Advanced Science, EarlyView.
Astrocytes in the midbrain periaqueductal gray (PAG) dynamically encode threat intensity and shape defensive action selection in mice. Real‐time Ca2+ imaging reveals robust astrocytic activation during predator odor and CO2 exposure. Aberrant astrocytic Ca2+ overactivation disrupts goal‐directed escape, biases behavior toward freezing, and induces ...
Ellane Barcelon, Kyungchul Noh, Minkyu Hwang, Yoon‐Jung Kim, Unjin Lee, Yeon Joo Ryu, Je‐Kyung Ryu, Sang Beom Jun, Se‐Young Choi, Woo‐Hyun Cho, Sung Joong Lee   +10 more
wiley   +1 more source

Relationships between Plant Biodiversity and Soil Fertility in a Mature Tropical Forest, Costa Rica

International Journal of Forestry Research, 2015
We aimed to study relationships between plant biodiversity and soil chemical fertility in a mature tropical forest of Costa Rica. Soil samples were collected in nine sampling plots (5 m by 25 m) in order to identify P, K, Ca, Mg, Fe, Zn, Mn, Cu, and Al ...
Martin B. Nadeau, Thomas P. Sullivan
doaj   +1 more source

Nanoscale Mapping of the Subcellular Glycosylation Landscape

Advanced Science, EarlyView.
Using multiplexed super‐resolution imaging with fluorophore‐labeled lectins, this study reports intracellular glycosylation at the nanoscale across organelles and synaptic specializations. Extending glycan analysis beyond the cell surface, Glyco‐STORM reveals distinct glycosylation nanodomains in the ER, Golgi, lysosomes, and synaptic sites.
Helene Gregoria Schroeter, Steffen Sass, Mike Heilemann, Thomas Kuner, Maja Klevanski   +4 more
wiley   +1 more source

Exponential Wiener index of some silicate networks

Scientific Reports
Any graph that depicts a particular molecular structure can be given a topological graph index, also known as a molecular descriptor. This index can be used to examine numerical data and discover more about specific physical properties of molecules ...
G. Subashini, K. Kannan, A. Menaga
doaj   +1 more source