Papers by Mark Moran AIHCP
Applied Physics Letters, 2015
A general method for aligning bent-core smectic liquid crystal materials is described. Alternatin... more A general method for aligning bent-core smectic liquid crystal materials is described. Alternating electric fields between interdigitated electrodes patterned on one cell surface create torques on the liquid crystal that result in uniform “bookshelf” orientation of the smectic layers. The aligned cell can then be driven in the conventional way by applying an electric field between all of the stripe electrodes connected together and a monolithic electrode on the other cell surface. Fast, analog, optical phase-only modulation is demonstrated in a device containing a polar, bent-core SmAPF material aligned using this technique.
The use of the activated carbon produced from rice hulls to control NOx emissions for the future ... more The use of the activated carbon produced from rice hulls to control NOx emissions for the future deep space missions has been demonstrated. The optimal carbonization temperature range was found to be between 600 C and 750 C. The burnoff of 61.8% was found at 700 C in pyrolysis and 750 C in activation. The BET surface area of the
The incineration of wastes is one of the most promising reclamation technologies being developed ... more The incineration of wastes is one of the most promising reclamation technologies being developed for life support in long range space travel. However, incineration in a closed environment will build up hazardous NOx if not regulated. A technology that can remove NOx under microgravity conditions without the need of expendables is required. Activated carbon prepared from inedible wheat straw and
This paper presents the results from a joint research initiative between NASA Ames Research Cente... more This paper presents the results from a joint research initiative between NASA Ames Research Center and Lawrence Berkeley National lab. The objective of the research is to produce activated carbon from life support wastes and to use the activated carbon to adsorb and chemically reduce the NOâ and SOâ contained in incinerator flue gas. Inedible biomass waste from food production
Effective permittivity near zero in nanolaminates of silver and amorphous polycarbonate
Journal of Nanophotonics, 2010
Experiments were conducted to demonstrate a material with epsilon near zero (ENZ). Dimensions est... more Experiments were conducted to demonstrate a material with epsilon near zero (ENZ). Dimensions estimated by effective medium theory guided the fabrication of nanolaminate composites of silver and amorphous polycarbonate. This approach ensures that the ordinary component (not the extraordinary component) of the relative permittivity of a uniaxial material equals zero. The nanolaminates were characterized for optical properties using spectroscopic ellipsometry,
Pregnancy anxieties and natural recognition in baby-switching
British journal of nursing (Mark Allen Publishing)
Recent media reports in the USA of baby-switching at birth have caused anxiety for a number of ma... more Recent media reports in the USA of baby-switching at birth have caused anxiety for a number of maternity patients. Although alternative precautionary procedures are being implemented by hospitals to prevent baby-switching, ways to allay the maternity patient's anxiety must also be considered. While maternity patients can be expected to recognize their neonates, it is less clear how well they perform recognition under specified conditions. An American team of researchers noted postpartum mothers' anxiety levels and their natural cues to recognize crying sounds and garment smells of their babies as preventive measures against baby-switching. An experimental study design was used to conduct this research. Participants completed a demographic form and Levin's pregnancy anxiety instrument, followed by three recognition challenges for hearing and smelling cues. Ten per cent of mothers reported anxiety about baby-switching, 65.9% recognized their babies from recorded crying, an...
2001 IEEE Aerospace Conference Proceedings (Cat. No.01TH8542)
This paper presents development and testing results of the Computer Replacement Program (CRP) for... more This paper presents development and testing results of the Computer Replacement Program (CRP) for the Joint Surveillance Target Attack Radar System (Joint STARS). Joint STARS, which consists of a modified Boeing 707-300 (E-8C) developed by Northrop Grumman and Common Ground Stations developed by Motorola, provides theater commanders near real-time surveillance and attack support information on moving and stationary targets. Diminishing manufacturing sources and an emphasis on life-cycle cost reduction required a modernization program that took maximum advantage of commercial equipment. The primary program objectives were maximizing marketplace support, reducing life-cycle costs and facilitating cyclic upgrades. CRP implemented this via a commercial off-the-shelf-based open architecture. The Computer Replacement Program met all its development objectives and will be fielded on the entire 15-aircraft Joint STARS fleet. Lessons learned included applying innovative acquisition processes in an open architecture, adapting to processes while under schedule pressure, ensuring early operational tester involvement, and estimating laboratory and ground testing in addition to flight-testing. The views expressed in this paper are those of the authors and do not represent views of the U.S. government or their contractors.
Daily Indicator Review Team (DIRT)
The 17th Annual SEMI/IEEE ASMC 2006 Conference, 2006
... Dimas Camacho, Dave Newlon, Anthony Murphy, Mike Moran Fab 11X Sort, Intel Corporation Rio Ra... more ... Dimas Camacho, Dave Newlon, Anthony Murphy, Mike Moran Fab 11X Sort, Intel Corporation Rio Rancho, New Mexico, USA Dimas.camacho@intel.com Dave.newlon@ intel.com Anthony.j.murphy@intel.com Mike.r.moran@intel.com Abstract ...
Determination of the 240Pu/239Pu atom ratio in low activity environmental samples by alpha spectrometry and spectral deconvolution
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1996
ABSTRACT Accurate measurement of the 240Pu/239Pu ratio in environmental samples is of importance ... more ABSTRACT Accurate measurement of the 240Pu/239Pu ratio in environmental samples is of importance as it may provide evidence for the definitive identification of a particular source-term. Usually, the measurement is performed by mass spectrometry, unless the activities involved are relatively high. In such cases, as the published literature shows, it is feasible to determine this ratio using high resolution alpha spectrometry and appropriate algorithms to deconvolute the partially resolved 239,240Pu multiplet. In this paper, a simple technique, based on commercially-available software developed for gamma spectra analysis (MicroSAMPO®), is described by which this complex multiplet can be resolved at the much lower activities typical of many environmental samples. In our approach, it is not necessary to make any alterations to the normal alpha spectrometric set-up (including energy dispersion), other than to improve collimation. The instrumental function is defined for each spectrum by fitting a modified gaussian with exponential tails to the comparatively well-resolved 242Pu “doublet” (used as tracer) and, if present, the 238Pu “doublet”. The fitted peaks are used to create an energy calibration file with which, using published energy data, the positions (in channels) of the component peaks of the multiplet are predicted. These positions are not altered subsequently when MicroSAMPO's interactive multiplet analysis facility is used to quantify the relative spectral intensities of the components. Before calculating the 240Pu/239Pu ratio, it is advisable to correct for coincidence summing of alpha particles and conversion electrons. The technique has been applied to the determination of the 240Pu/239Pu ratio in a set of environmental samples, most of which were supplied by IAEA-MEL under their laboratory intercomparison programme. Subsequently, replicate samples were analysed independently using thermal ionisation mass spectrometry. The agreement between the two sets of data was most satisfactory. Further validation of this deconvolution technique was provided by the good agreement between the measured alpha-emission probabilities for the component peaks in the 239, 240Pu multiplet and published values.
Liquid Crystals, 2012
We demonstrate that topographic confinement in micro-channels can produce aligned domains of the ... more We demonstrate that topographic confinement in micro-channels can produce aligned domains of the columnar liquid crystal phase of complementary duplex short deoxyribonucleic acid (DNA) oligomers. Optical microscopy probing birefringence and fluorescence polarisation showed that the columnar liquid crystal phase of a 1:1 mixture of the complementary dodecamers 5 ′ -CCTCAAAACTCC-3 ′ and 5 ′ -GGAGTTTTGAGG-3 ′ in aqueous solution was aligned with the duplex DNA chains oriented normal to the channel axis.
The Journal of the Acoustical Society of America, 2005
A simulation study is conducted to demonstrate in principle that time reversal processing can be ... more A simulation study is conducted to demonstrate in principle that time reversal processing can be used to locate sound sources in an outdoor urban area with many buildings. Acoustic pulse propagation in this environment is simulated using a two-dimensional finite difference time domain (FDTD) computation. Using the simulated time traces from only a few sensors and back propagating them with the FDTD model, the sound energy refocuses in the vicinity of the true source location. This time reversal numerical experiment confirms that using information acquired only at non-line-of-sight locations is sufficient to obtain accurate source locations in a complex urban terrain.
Journal of Materials Chemistry, 2005
Liquid crystals with axially chiral 3,3′-dinitro-2,2′,6,6′-tetramethylbiphenyl cores: the lateral shielding effect of bicyclo[2.2.2]octane-1-carboxylate terminal chains
Journal of Materials Chemistry, 2010
Calamitic mesogens with axially chiral 3,3′-dinitro-2,2′,6,6′-tetramethylbiphenyl cores and combi... more Calamitic mesogens with axially chiral 3,3′-dinitro-2,2′,6,6′-tetramethylbiphenyl cores and combinations of 4-alkoxybenzoate and 4-pentyl-or 4-alkoxybicyclo[2.2.2]octane-1-carboxylate terminal chains were synthesized and characterized. The results suggest that the ...
IEEE/ACM Transactions on Networking, 1996
Many future applications will require guarantees on network performance, such as bounds on throug... more Many future applications will require guarantees on network performance, such as bounds on throughput, delay, delay jitter, and reliability. To address this need, the Tenet Group at the University of California at Berkeley has designed, simulated, and implemented a suite of network protocols to support real-time channels (network connections with mathematically provable performance guarantees). The protocols, which constitute the prototype Tenet Real-Time Protocol Suite (Suite 1), run on a packet-switching internetwork, and can coexist with the popular Internet Suite. We rely on the use of connection-oriented communication, admission control, and channel rate control. This protocol suite is the first complete set of communication protocols that can transfer real-time streams with guaranteed quality in packet-switching internetworks. Our initial development was done on a local-area FDDI network. We have since installed our protocols on the experimental wide-area internetwork of Project Sequoia 2000, where they have been running for several months. We have performed a number of experiments and demonstrations in this environment using continuous-media loads (particularly video). Our results show that our approach is both feasible and practical to build, and that it can successfully provide performance guarantees to real-time applications. This paper describes the design and implementation of the suite, the experiments we performed, and selected results, along with the lessons we learned.
Desert methane: Implications for life detection on Mars
Icarus, 2005
The Viking landers (1976) were designed to detect life on Mars through a variety of experimental ... more The Viking landers (1976) were designed to detect life on Mars through a variety of experimental approaches. The Viking I and II Labeled Release (LR) experiments Levin and Straat, 1977 and Levin and Straat, 1979 detected gas production with a scintillation detector following ...
Gynecologic Oncology, 1980
Surgical staging was done in 355 patients with carcinoma of the cervix. Periaortic node biopsies,... more Surgical staging was done in 355 patients with carcinoma of the cervix. Periaortic node biopsies, peritoneal cytology, and/or biopsy were obtained to determine the need of extended field irradiation. Forty-one patients received extended field irradiation. On review, 38 of these patients were shown to have cancer in the periaortic nodes or peritoneal cavity. Of these patients, 5 have survived longer than 5 years, 3 with metastatic cancer in the periaottic nodes and 2 in the peritoneal cavity. Irradiation to extended fields was 4500 rad or less for the first 17 patients. Since then 5100 rad has been delivered at the rate of 850 rad per week. The incidence of bowel complications was not excessive, utilizing a suture technique to exclude small bowel from the pelvis. Control of the cancer occurred in one patient with massive metastatic periaortic disease. A safe and effective dosage level for radiation therapy has been established with the described limited surgical exploration.
Bulletin of the American Physical Society, Mar 13, 2008
Double stranded deoxyribonucleic acid (DNA) is known to form lyotropic liquid crystal (LC) phases... more Double stranded deoxyribonucleic acid (DNA) is known to form lyotropic liquid crystal (LC) phases, nematic and then columnar with increasing DNA concentration in water. Single stranded (DNA) does not form liquid crystal phases. We study the phase separation of both long (900bp) and short (6-20bp) DNA. In the mixture solution of a self complementary sequences (scDNA) and non complementary sequences (nscDNA), the scDNA forms DNA double helices and hence forms LC phases while the nscDNA stays in the isotropic phase, the LC ...
The American Journal of Cardiology, 2007
We developed a regional strategy to decrease the time to percutaneous coronary intervention (PCI)... more We developed a regional strategy to decrease the time to percutaneous coronary intervention (PCI) for patients with acute ST-segment elevation myocardial infarction (STEMI). Protocols were created for paramedics and referring hospitals to identify and directly triage all patients with STEMI to a single PCI center. Time to PCI reperfusion and in-hospital mortality were assessed in 233 consecutive patients with STEMI. Ninety-minute initial hospital door-to-patent infarct artery was achieved in 58.3% of paramedic-diagnosed and directly triaged patients compared with 37.5% of "walk-ins" to the PCI hospital and with only 5.2% of those transferred from another hospital emergency department (ED; p <0.001). Overall in-hospital mortality was 2.1%, 0% in paramedic identified patients, and 0% in those walk-ins to the PCI hospital ED compared with 4.3% for those transferred from a referring hospital ED (p ؍ 0.007). Paramedic diagnosis of STEMI and direct triage to a prealerted interventional hospital for primary PCI was associated with a high percentage of patients achieving <90-minute infarct artery patency. Substantial delays remained for those who presented initially to a non-PCI hospital ED despite the expedited protocol. In conclusion, this observational study suggests that wider use of paramedic electrocardiographic STEMI diagnosis and direct triage to a prealerted PCI hospital catheterization team may help improve outcomes of patients with STEMI.
Liquid Crystal Ordering of Random DNA Oligomers
Concentrated solutions of DNA oligomers (6 to 20 base pairs) organize into chiral nematic (NEM) a... more Concentrated solutions of DNA oligomers (6 to 20 base pairs) organize into chiral nematic (NEM) and columnar (COL) liquid crystal (LC) phases. When the oligomer duplexes are mixed with single strands, LC phase formation proceeds through macroscopic phase separation, as a consequence of the combination of various self-assembly processes including strand pairing, reversible linear aggregation, demixing and LC ordering. We extended our investigation to the case of LC ordering in oligonucleotides whose ...
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Papers by Mark Moran AIHCP