The Experts below are selected from a list of 33357 Experts worldwide ranked by ideXlab platform
Rebecca Harris - One of the best experts on this subject based on the ideXlab platform.
-
Redgum Park Dexter Cattle - Breed Info - print page
2006Co-Authors: Rebecca HarrisAbstract:Welcome to Redgum Park Dexter Cattle, home of quality stud Dexter cows and bulls. Producers of high quality Dexter beef. This has information about the Dexter breed - print page
-
Redgum Park Dexter Cattle - Home Page
2006Co-Authors: Rebecca HarrisAbstract:Welcome to Redgum Park Dexter Cattle, home of quality stud Dexter cows and bulls. Producers of high quality Dexter beef.
-
Redgum Park Dexter Cattle - Home Page - print page
2006Co-Authors: Rebecca HarrisAbstract:Welcome to Redgum Park Dexter Cattle, home of quality stud Dexter cows and bulls. Producers of high quality Dexter beef - Print Page
-
Redgum Park Dexter Cattle - Useful Links
2006Co-Authors: Rebecca HarrisAbstract:Welcome to Redgum Park Dexter Cattle, home of quality stud Dexter cows and bulls. Producers of high quality Dexter beef. This page has useful links.
-
Redgum Park Dexter Cattle - Useful Links - print page
2006Co-Authors: Rebecca HarrisAbstract:Welcome to Redgum Park Dexter Cattle, home of quality stud Dexter cows and bulls. Producers of high quality Dexter beef. This page has useful links - print page
David N Beratan - One of the best experts on this subject based on the ideXlab platform.
-
quantum interferences among Dexter energy transfer pathways
Faraday Discussions, 2019Co-Authors: Peng Zhang, Panayiotis Antoniou, Spiros S Skourtis, David N BeratanAbstract:Dexter energy transfer in chemical systems moves an exciton (i.e., an electron–hole pair) from a donor chromophore to an acceptor chromophore through a bridge by a combination of bonded and non-bonded interactions. The transition is enabled by both one-electron/one-particle and two-electron/two-particle interaction mechanisms. Assuming that there is no real intermediate state population of an electron, hole, or exciton in the bridge, the transport involves two states that are coupled non-adiabatically. As such, coherent quantum interferences arise among the Dexter energy coupling pathways. These interferences, while related to well understood interferences in single-electron transfer, are much richer because of their two particle nature: the transfer of a triplet exciton involves the net transfer of both an electron and a hole. Despite this additional complexity, simple rules can govern Dexter coupling pathway interferences in special cases. As in the case of single-electron transfer, identical parallel coupling pathways can be constructively interfering and may enhance the Dexter transfer rate. Because of the virtual particle combinatorics associated with two-particle superexchange, two parallel Dexter coupling routes may be expected to enhance Dexter couplings by more than a factor of two. We explore Dexter coupling pathway interferences in non-covalent assemblies, employing a method that enables the assessment of Dexter coupling pathway strengths and interferences, in the context of one-particle and two-particle coupling interactions.
-
Dexter energy transfer pathways
Proceedings of the National Academy of Sciences of the United States of America, 2016Co-Authors: Spiros S Skourtis, Panayiotis Antoniou, Aaron M Virshup, David N BeratanAbstract:Energy transfer with an associated spin change of the donor and acceptor, Dexter energy transfer, is critically important in solar energy harvesting assemblies, damage protection schemes of photobiology, and organometallic opto-electronic materials. Dexter transfer between chemically linked donors and acceptors is bridge mediated, presenting an enticing analogy with bridge-mediated electron and hole transfer. However, Dexter coupling pathways must convey both an electron and a hole from donor to acceptor, and this adds considerable richness to the mediation process. We dissect the bridge-mediated Dexter coupling mechanisms and formulate a theory for triplet energy transfer coupling pathways. Virtual donor–acceptor charge-transfer exciton intermediates dominate at shorter distances or higher tunneling energy gaps, whereas virtual intermediates with an electron and a hole both on the bridge (virtual bridge excitons) dominate for longer distances or lower energy gaps. The effects of virtual bridge excitons were neglected in earlier treatments. The two-particle pathway framework developed here shows how Dexter energy-transfer rates depend on donor, bridge, and acceptor energetics, as well as on orbital symmetry and quantum interference among pathways.
Haldun Muderrisoglu - One of the best experts on this subject based on the ideXlab platform.
-
cor triatriatum Dexter in two adult patients
International Journal of Cardiovascular Imaging, 2006Co-Authors: Mustafa Caliskan, Dogan Erdogan, Hakan Gullu, Haldun MuderrisogluAbstract:Cor triatriatum Dexter, in which the right atrium (RA) is divided into two chambers by a membrane, is a very rare congenital abnormality. In this abnormality, there is a high incidence of associated congenital abnormalities, particularly of the right heart. We presented two men with cor triatriatum Dexter. Echocardiography is discussed as a non-invasive diagnostic tool.
-
cor triatriatum Dexter atrial septal defect and ebstein s anomaly in an adult given a diagnosis by transthoracic and transesophageal echocardiography a case report
Journal of The American Society of Echocardiography, 2004Co-Authors: Serpil Eroglu, Aylin Yildirir, Vahide Simsek, Huseyin Bozbas, Muhammet Bilgi, Bulent Ozin, Haldun MuderrisogluAbstract:Abstract Cor triatriatum Dexter is a very rare congenital abnormality in which the right atrium is divided into two chambers by a membrane. In this abnormality, there is a high incidence of associated congenital abnormalities, particularly of the right heart. In this case study, a 67-year-old man with Ebstein's anomaly, atrial septal defect, and cor triatriatum Dexter is presented and echocardiography is discussed as a noninvasive diagnostic tool.
William W Oneill - One of the best experts on this subject based on the ideXlab platform.
-
cor triatriatum Dexter recognition and percutaneous transluminal correction
Catheterization and Cardiovascular Diagnosis, 1991Co-Authors: Vicky Savas, J Samyn, Theodore L Schreiber, A Hauser, William W OneillAbstract:: Cor triatriatum Dexter is a rare congenital anomaly in which an obstructive membrane is located in the right atrium. The detection usually occurs after the sequelae of systemic congestion, coagulopathy, and hepatic dysfunction have set in, leading up to a high surgical risk. A percutaneous balloon correction of cor triatriatum Dexter in a patient with advanced right-sided congestive symptoms and hepatic dysfunction is presented. This efficacious method is an alternative to surgical correction and could be extended to the more common cor triatriatum sinistra.
Spiros S Skourtis - One of the best experts on this subject based on the ideXlab platform.
-
quantum interferences among Dexter energy transfer pathways
Faraday Discussions, 2019Co-Authors: Peng Zhang, Panayiotis Antoniou, Spiros S Skourtis, David N BeratanAbstract:Dexter energy transfer in chemical systems moves an exciton (i.e., an electron–hole pair) from a donor chromophore to an acceptor chromophore through a bridge by a combination of bonded and non-bonded interactions. The transition is enabled by both one-electron/one-particle and two-electron/two-particle interaction mechanisms. Assuming that there is no real intermediate state population of an electron, hole, or exciton in the bridge, the transport involves two states that are coupled non-adiabatically. As such, coherent quantum interferences arise among the Dexter energy coupling pathways. These interferences, while related to well understood interferences in single-electron transfer, are much richer because of their two particle nature: the transfer of a triplet exciton involves the net transfer of both an electron and a hole. Despite this additional complexity, simple rules can govern Dexter coupling pathway interferences in special cases. As in the case of single-electron transfer, identical parallel coupling pathways can be constructively interfering and may enhance the Dexter transfer rate. Because of the virtual particle combinatorics associated with two-particle superexchange, two parallel Dexter coupling routes may be expected to enhance Dexter couplings by more than a factor of two. We explore Dexter coupling pathway interferences in non-covalent assemblies, employing a method that enables the assessment of Dexter coupling pathway strengths and interferences, in the context of one-particle and two-particle coupling interactions.
-
Dexter energy transfer pathways
Proceedings of the National Academy of Sciences of the United States of America, 2016Co-Authors: Spiros S Skourtis, Panayiotis Antoniou, Aaron M Virshup, David N BeratanAbstract:Energy transfer with an associated spin change of the donor and acceptor, Dexter energy transfer, is critically important in solar energy harvesting assemblies, damage protection schemes of photobiology, and organometallic opto-electronic materials. Dexter transfer between chemically linked donors and acceptors is bridge mediated, presenting an enticing analogy with bridge-mediated electron and hole transfer. However, Dexter coupling pathways must convey both an electron and a hole from donor to acceptor, and this adds considerable richness to the mediation process. We dissect the bridge-mediated Dexter coupling mechanisms and formulate a theory for triplet energy transfer coupling pathways. Virtual donor–acceptor charge-transfer exciton intermediates dominate at shorter distances or higher tunneling energy gaps, whereas virtual intermediates with an electron and a hole both on the bridge (virtual bridge excitons) dominate for longer distances or lower energy gaps. The effects of virtual bridge excitons were neglected in earlier treatments. The two-particle pathway framework developed here shows how Dexter energy-transfer rates depend on donor, bridge, and acceptor energetics, as well as on orbital symmetry and quantum interference among pathways.
