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Instant single-photon Fock state tomography.
Huisman, S R,Jain, Nitin,Babichev, S A,Vewinger, Frank,Zhang, A N,Youn, S H,Lvovsky, A I Optical Society of America 2009 Optics letters Vol.34 No.18
<P>Heralded single photons are prepared at a rate of approximately 100 kHz via conditional measurements on polarization-nondegenerate biphotons produced in a periodically poled potassium-titanyl phosphate crystal. The single-photon Fock state is characterized using high-frequency pulsed optical homodyne tomography with a fidelity of (57.6+/-0.1)%. The state preparation and detection rates allowed us to perform on-the-fly alignment of the apparatus based on real-time analysis of the quadrature measurement statistics.</P>
Engineering the third wave of biocatalysis
Bornscheuer, U. T.,Huisman, G. W.,Kazlauskas, R. J.,Lutz, S.,Moore, J. C.,Robins, K. Nature Publishing Group, a division of Macmillan P 2012 Nature Vol.485 No.7397
Over the past ten years, scientific and technological advances have established biocatalysis as a practical and environmentally friendly alternative to traditional metallo- and organocatalysis in chemical synthesis, both in the laboratory and on an industrial scale. Key advances in DNA sequencing and gene synthesis are at the base of tremendous progress in tailoring biocatalysts by protein engineering and design, and the ability to reorganize enzymes into new biosynthetic pathways. To highlight these achievements, here we discuss applications of protein-engineered biocatalysts ranging from commodity chemicals to advanced pharmaceutical intermediates that use enzyme catalysis as a key step.
Paiano, Monica O.,Huisman, John M.,Cabrera, Feresa P.,Spalding, Heather L.,Kosaki, Randall K.,Sherwood, Alison R. The Korean Society of Phycology 2020 ALGAE Vol.35 No.4
Haraldiophyllum hawaiiense sp. nov. is described as a new mesophotic alga and a new genus record for the Hawaiian Islands. Six specimens were collected at a depth range of 81-93 m from Papahānaumokuākea Marine National Monument, and their morphology investigated, as well as molecular phylogenetic analyses of the plastidial ribulose-1,5-bisphosphate carboxylase-oxygenase large-subunit (rbcL) gene and a concatenated alignment of rbcL and nuclear large-subunit rRNA gene (LSU) sequences. Phylogenetic analyses supported H. hawaiiense sp. nov. as a distinct lineage within the genus Haraldiophyllum, and sister to a large clade containing the type species, H. bonnemaisonii, as well as H. crispatum and an undescribed European specimen. The six Hawaiian specimens were shown to be identical, but unique among other species of the genus as well as the recently segregated genus Neoharaldiophyllum, which comprises half of the species previously included in Haraldiophyllum. The vegetative morphology of H. hawaiiense sp. nov. resembles Neoharaldiophyllum udoense (formerly H. udoensis); however, no female or post-fertilization structures were found in the Hawaiian specimens to allow a more comprehensive comparison. The molecular phylogenies demonstrate that Haraldiophyllum is paraphyletic, suggesting either that the Myriogrammeae tribe includes undescribed genera, including Haraldiophyllum sensu stricto, or that Neoharaldiophyllum species should be transferred into the genus Haraldiophyllum. However, based on vegetative morphology and molecular analyses, and pending resolution of this taxonomic issue, the Hawaiian specimens are placed within the genus Haraldiophyllum. This new record for the Hawaiian Islands highlights the novel biodiversity from mesophotic depths, reaffirming the need for further investigation into the biodiversity of Mesophotic Coral Ecosystems.
Single Line Theory를 적용한 안목 해변 잠제에 의한 해안선 변화 모델링
장연식(Yeon S. Chang),바스 후이스만(Bas Huisman),위베 데 보어(Wiebe de Boer),심재설(Jae seol Sim),로버트 멕컬(Robert McCall),도기덕(Ki deok Do),유제선(Je seon Yoo) 한국연안방재학회 2017 한국연안방재학회지 Vol.4 No.4
Since a submerged breakwater (SBW) was built and the beach was nourished at Anmok in the east coast of Republic of Korea at October, 2014, the shoreline in the lee of the SBW has accreted about 25 m during the first seven months after construction. The shoreline evolution showed two distinct patterns which were studied in this paper. A strong local accretion behind the submerged breakwater was observed in March 2015 and a smoother shoreline with accretion that extended up to Gangneung Harbor breakwater in May 2015. The UNIBEST coastline model (developed at Delft Hydraulics) was applied for the investigation of the observed shoreline undulation patterns which were generated by alongshore sediment transport gradients that were induced by the SBW and nourishment. Nearshore wave conditions were computed for this purpose at nine locations in the nearshore with the Delft3D-wave model. Two detailed wave scenarios with different crest height of the SBW were taken into account to represent the transmission of waves at the SBW which were validated with field measurements. The coastline model is able to reproduce the observed shoreline evolution patterns when wave transmission at the SBW is represented well, which is the case for a wave scenario with a lowered effective crest level of the SBW. Initially, accretion takes place predominantly at the northern side of the scheme, which was similar to the observed shoreline shape of the March 2015 situation. This local accretion is a result of the low sediment transport capacity behind the SBW due to sheltering of the wave energy, which initially hinders the redistribution of sediment to the South (i.e. area in-between Gangneung Harbor and SBW). After some months, a redistribution of sediment will take place behind the SBW which results in a smoother shoreline pattern which is similar to the May 2015 situation. The rate of change of the shoreline accretion is controlled by the absolute transport rates at the coast (i.e. wave energy), but is often of lesser importance since an adjustment towards a new shoreline equilibrium may take place within relatively short time scales (i.e. months to a few years). In addition to the wave energy, it was found that the relative angle of the incoming waves (α) is most relevant for the final shoreline shape. The shoreline evolution at future SWB structures may therefore be predicted by precisely estimating the α directly after construction of the SBW.