The Microwave Thermal Thruster Concept

The microwave thermal thruster heats propellant via a heat-exchanger then expands it through a rocket nozzle to produce thrust. The heat-exchanger is simply a microwave-absorbent structure through which propellant flows in small channels. Nuclear thermal thrusters are based on an analogous principle, using neutrons rather than microwaves, and have experimentally demonstrated specific impulses exceeding 850 seconds. A microwave equivalent will likely have a similar specific impulse, since both nuclear and microwave thermal thrusters are ultimately constrained by material thermal limits, rather than the energy-density limits of chemical propellants. We present the microwave thermal thruster concept by characterizing a novel variation for beamed-energy launch. In reducing the thruster concept to practice, the enabling physical process is microwave absorption by refractory materials, and we examine semiconductor and susceptor-based approaches to achieving this absorption within the heat-exchanger structure

Quantum interferometric sensors

Quantum entanglement has the potential to revolutionize the entire field of interferometric sensing by providing many orders of magnitude improvement in interferometer sensitivity. The quantum entangled particle interferometer approach is very general and applies to many types of interferometers. In particular, without nonlocal entanglement, a generic classical interferometer has a statistical-sampling shot-noise limited sensitivity that scales like 1/√N, where N is the number of particles passing through the interferometer per unit time. However, if carefully prepared quantum correlations are engineered between the particles, then the interferometer sensitivity improves by a factor of √N to scale like 1/N, which is the limit imposed by the Heisenberg Uncertainty Principle. For optical interferometers operating at milliwatts of optical power, this quantum sensitivity boost corresponds to an eight-order-of-magnitude improvement of signal to noise. This effect can translate into a tremendous science pay-off for NASA-JPL missions. For example, one application of this new effect is to fiber optical gyroscopes for deep-space inertial guidance and tests of General Relativity (Gravity Probe B). Another application is to ground and orbiting optical interferometers for gravity wave detection, Laser Interferometer Gravity Observatory (LIGO) and the European Laser Interferometer Space Antenna (LISA), respectively. Other applications are to Satellite-to-Satellite laser Interferometry (SSI) proposed for the next generation Gravity Recovery And Climate Experiment (GRACE II)

Quantum interferometric sensors

Quantum entanglement has the potential to revolutionize the entire field of interferometric sensing by providing many orders of magnitude improvement in interferometer sensitivity. The quantum-entangled particle interferometer approach is very general and applies to many types of interferometers. In particular, without nonlocal entanglement, a generic classical interferometer has a statistical-sampling shot-noise limited sensitivity that scales like 1/√N, where N is the number of particles passing through the interferometer per unit time. However, if carefully prepared quantum correlations are engineered between the particles, then the interferometer sensitivity improves by a factor of √ to scale like I/N, which is the limit imposed by the Heisenberg Uncertainty Principle. For optical interferometers operating at milliwatts of optical power, this quantum sensitivity boost corresponds to an eight-order-of-magnitude improvement of signal to noise. This effect can translate into a tremendous science pay-off for space missions. For example, one application of this new effect is to fiber optical gyroscopes for deep-space inertial guidance and tests of General Relativity (Gravity Probe B). Another application is to ground and orbiting optical interferometers for gravity wave detection, Laser Interferometer Gravity Observatory (LIGO) and the European Laser Interferometer Space Antenna (LISA), respectively. Other applications are to Satellite-to-Satellite laser Interferometry (SSI) proposed for the next generation Gravity Recovery And Climate Experiment (GRACE II)

An Opinion Paper of the Cardiology Practice and Research Network of the American College of Clinical Pharmacy: Recommendations for Training of Cardiovascular Pharmacy Specialists in Postgraduate Year 2 Residency Programs

Pharmacists in direct patient care settings are expanding their roles and responsibilities. These changes mandate a deeper and broader understanding of disease states, as well as influencing social, behavioral, and environmental factors. Existing guidelines and accreditation standards related to the training of graduate or cardiovascular pharmacist specialists (ie, Accreditation Council for Graduate Medical Education, American Society of Health‐System Pharmacists, American College of Clinical Pharmacy [ACCP]) provide some guidance on essential competencies. However, they stop short of providing recommendations for how to achieve all the objectives. The purpose of this paper is to build upon existing guidelines/standards, describing our recommendations for pharmacy residency training of a cardiovascular clinical specialist. The paper is broken down into the following sections: (1) Skills and Competencies (Building Clinical Skills, Application of Clinical Knowledge and Skills, Drug Information, Research and Scholarship, Teaching Skills, Interpersonal, Communication, and Presentation Skills), (2) Personal and Professional Growth (Growing Interpersonal Skills, Engaging with the Profession), (3) Program Design (Resident Selection, Preceptors and Mentoring, Expectations for Progress/Milestones, Program and Learning Experience Structure), and (4) Clinical and Therapeutic Content Expertise or Medical Knowledge. After each recommendation, specific details are provided to aid in conceptualizing how each can be achieved. Some recommendations are considered essential whereas others are designated as optional. This paper represents the opinion of the Cardiology Practice and Research Network of the American College of Clinical Pharmacy. It does not necessarily represent an official ACCP commentary, guideline, or statement of policy or position