X-band klystrons capable of 50 MW and utilizing Periodic Permanent Magnet (PPM) focusing are undergoing design and fabrication at the Stanford Linear Accelerator Center (SLAC). The klystron development is part of an effort to realize components necessary for the construction of the Next Linear Collider (NLC). The first klystron to be tested this year has a 0.6 UK beam at 465 kV, a 5-cell travel...

We report on Q-switched waveguide lasers on the graphene-based crystalline Y-branch platform. By applying direct femtosecond laser writing of Nd:YAG laser crystal, a surface waveguide splitter with Y-branch geometry has been fabricated with depressed cladding configuration. The Q-switched lasing operation at 1064 nm is achieved in transmission mode, by attaching a two-layer graphene on the reso...

In this paper we present an optogenetic neural recording system and its application to the study of the mouse visual cortex. We used a 32 x 32 fast and custom-designed imaging chip and system specifically designed to operate with voltage sensitive dyes. The system can operate up to 1000 frames per second, delivering a peak SNR performance of 63 dB, weighs less than 10 grams and consumes 12 mW o...

1. Rosai J, Dorfman RF. Sinus histiocytosis with massive lymphadenopathy: a newly recognized benign clinicopathological entity. Arch Pathol. 1969;87 (1):63-70. 2. Foucar E, Rosai J, Dorfman R. Sinus histiocytosis with massive lymphadenopathy (Rosai-Dorfman disease): review of the entity. Semin Diagn Pathol. 1990;7(1):19-73. 3. Eisen RN, Buckley PJ, Rosai J. Immunophenotypic characterization of ...

The use of microwave (MW) irradiation to increase the rate of chemical reactions has attracted much attention recently in nearly all fields of chemistry due to substantial enhancements in reaction rates. However, the intrinsic nature of the effects of MW irradiation on chemical reactions remains unclear. Herein, the highly effective conversion of NO and decomposition of H2S via MW catalysis wer...

A no-till (NT) production system has potential to reduce soil erosion, fossil fuel consumption, and greenhouse gas emissions compared with a conventional till (CT) system. Nitrogen fertilization (four to six N rates) and tillage system (CT and NT) effects on irrigated, continuous corn (Zea mays L.) yields were evaluated for 5 yr on a clay loam soil to determine the viability of the NT system an...

This paper takes as its starting point the assumption that the «Epidemiological Imagination» has a central role to play in the future development of policies and practice to improve population health and reduce health inequalities within and between states but suggests that by neglecting the contribution that qualitative research can make epidemiology is failing to deliver this potential. The p...

Salmonella remains a threat to both animal and public health. Its economic significance remains high and changes in public perception mean that some measures for control may be necessary even in the absence of financial loss. Diagnosis is an important part of control. A great deal of new information has become available over the last few years as a result of research into various aspects of bot...