We investigate the coherence properties of individual nuclear spin quantum bits in diamond [Dutt et al., Science, 316, 1312 (2007)] when a proximal electronic spin associated with a nitrogenvacancy (NV) center is being interrogated by optical radiation. The resulting nuclear spin dynamics are governed by time-dependent hyperfine interaction associated with rapid electronic transitions, which ca...

The principles of microwave and feedback theory are independently applied to the analysis of both optical and terahertz-regime multilayer systems. An analogy between the two approaches is drawn, and useful recursion relations, along with a signal-flow approach, are presented for both reflection and transmission cases. These relations, in terms of S-parameters, allow an exact analytical solution...

*Correspondence: Silvia Salvi, Department of High Risk Pregnancies, Catholic University of Sacred Heart, Universitary Hospital “A. Gemelli”, Largo Gemelli 8, 00168, Rome, Italy, E-mail: [email protected] Received Date: 09 Feb 2017 Accepted Date: 21 Mar 2017 Published Date: 24 Mar 2017 Citation: De Carolis MP, Salvi S, Bersani I, Corsello M, De Carolis S. Single-Twin Demise in Monochorionic ...

1 2 3 4 5 6 7 8 9 10 11 Persistence of motor memories reflects statistics of the learning event 12 13 14 Vincent S. Huang and Reza Shadmehr 15 Laboratory for Computational Motor Control 16 Department of Biomedical Engineering 17 Johns Hopkins School of Medicine 18 Baltimore, MD 21205 19 20 21 22 23 24 Abbreviated title: Statistics of the learning event affect decay of motor memory 25 26 Send co...

A new lineage of Ensifer nodulating the American legume Acacia angustissima in the tropical forest of Chiapas and Morelos, Mexico is described. Bacteria were identified as Ensifer with ssb or nolR specific primers. Phylogenetic analysis with partial sequences of the five chromosomal genes gyrA, nolR, recA, rpoB and rrs revealed that this new lineage is related to African Ensifer terangae. The r...

J. Mühle, A. L. Ganesan, B. R. Miller, P. K. Salameh, C. M. Harth, B. R. Greally, M. Rigby, L. W. Porter*,†, L. P. Steele, C. M. Trudinger, P. B. Krummel, S. O’Doherty, P. J. Fraser, P. G. Simmonds, R. G. Prinn, and R. F. Weiss Scripps Institution of Oceanography, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0244, USA Center for Global Change Science, Massachusetts...

We report a continuous-wave (cw) source of tunable radiation across 333-345 nm in the ultraviolet (UV) using bismuth triborate, BiB₃O₆ (BIBO) as the nonlinear gain material. The source is based on internal sum-frequency-generation (SFG) in a cw singly-resonant optical parametric oscillator (OPO) pumped at 532 nm. The compact tunable source employs a 30-mm-long MgO:sPPLT crystal as the OPO gain ...

لقد اتبع کلّ من النقاد منهجاً خاصاً فی النقد الأدبی؛ ولکن طه حسین اتخذ المنهج التلفیقی فی نقده لکتاب حدیث الأربعاء، واستفاد عن تحلیل الخطاب فی هذا المنهج، کما اعتنی إلی شخصیة الشاعر وعصره وفنّه فی تحلیله. یهدف هذا المقال ـ اعتماداً علی منهج الوصفی.التحلیلی ـ إلی استجلاء جهود طه حسین النقدی، وإیضاح منهجه النقدی فی کتاب حدیث الأربعاء.  ومن نتائج توصلت إلیها الدراسة، یتبین أنّ طه حسین اهتمّ، فی نقده، إلی...

The church of Saint Mamas is a small, domed structure that lies close to Menetes village in Karpathos. It preserves most its painted decoration, consisting the scene Ascension Christ on dome and saintly figures rest surfaces. A dedicatory inscription, read here for first time, dates frescoes 1312/3 places them broader context precisely dated monuments. Certain features iconographic program, suc...