Sample records for ultimate ph phu

  1. Effect of Ultimate pH on Postmortem Myofibrillar Protein Degradation and Meat Quality Characteristics of Chinese Yellow Crossbreed Cattle

    PubMed Central

    Wang, Tiantian; Mao, Yanwei; Zhang, Yimin; Niu, Lebao; Liang, Rongrong; Zhu, Lixian; Luo, Xin

    2014-01-01

    This paper describes the complex effects of postmortem ultimate pH (pHu) on Chinese Yellow crossbreed cattle quality during postmortem ageing and provides an explanation of how pHu affects beef tenderness. High pHu beef had the highest initial tenderness (P < 0.05) compared with other groups at 1 day postmortem. Intermediate and low pHu beef had similar initial WBSF at 1 day postmortem, but intermediate pHu beef had slower tenderization rate than low pHu beef (P < 0.05). Purge loss, cooking loss, L*, a*, and b* values decreased with increasing pHu during ageing (P < 0.05). Myofibril fragmentation index (MFI) was higher in high pHu beef than intermediate and low pHu beef throughout ageing (P < 0.05). Protein degradation studies found that desmin and troponin-T appeared degraded within 0.5?h postmortem for high and low pHu beef, compared to >2 days for intermediate pHu beef. Overall, Chinese Yellow crossbred cattle tenderness is related to pHu, which may be affected by proteolytic enzymatic activity. Therefore, pHu may be used to predict beef tenderness and other quality characteristics during postmortem ageing. To achieve consistent tenderness, different ageing times should be used, depending on pHu. PMID:25197695

  2. The in vitro digestibility of beef varies with its inherent ultimate pH.

    PubMed

    Farouk, Mustafa M; Wu, Guojie; Frost, Deborah A; Clerens, Stefan; Knowles, Scott O

    2014-11-01

    Animal carcasses and cuts of meat are usually differentiated and valued according to size and compositional attributes. An underappreciated variable of red meat is its inherent ultimate pH (pHu) value, which affects organoleptic and processing characteristics. This study tests the hypothesis that high pHu aged meat would be more digestible than low pHu unaged (fresh) meat. Longissimus dorsi muscles collected from 59 bull carcasses had pHu values of 5.6-6.9. These were aged for 21 days at -1.5 °C, then raw and cooked (72 °C) samples were enzymatically digested at 37 °C with pepsin (pH 1.9 for 90 min) followed by pancreatin (pH 8.0 for an additional 120 min) to simulate conditions in the stomach and small intestine, respectively. Meat proteins and peptides in the digests were separated by 1D SDS PAGE. Regardless of pHu, ageing or cooking, most sarcoplasmic and myofibrillar proteins were rapidly digested by pepsin, with concomitant release of products identified by LC-MS/MS as mainly myosin-1, -2 and -7, ?-actinin-2 or -3 and tropomyosin beta and alpha chains. These products were resistant to further digestion for the entire 210 min duration of the incubation. In terms of rate and extent of digestibility of these resistant products, high pHu > low pHu (P < 0.001), whereas aged > unaged (P < 0.003), with the effect of cooking dependent on pHu and varying somewhat by protein. Overall, the digestibility of meat samples increased with increasing pHu (P < 0.001). Beef meat was highly digestible but could be further differentiated on the basis of its pHu and the ease of digestibility of proteins. Specific carcasses or cuts could be targeted to consumer groups in order to provide benefits and add value. PMID:25066932

  3. Effect of beef ultimate pH and large structural protein changes with aging on meat tenderness.

    PubMed

    Wu, G; Farouk, M M; Clerens, S; Rosenvold, K

    2014-12-01

    This study investigated the effect of ultimate pH (pHu) in beef on the degradation of large structural proteins during refrigerated storage using SDS-PAGE. M. longissimus dorsi from bull carcasses were selected and classified into three groups: low pHu (?5.79), intermediate pHu (5.80-6.19) and high pHu (?6.2) muscles. Samples were then stored at -1.5°C for 1, 2, 7, 14, 21 and 28days. Meat tenderness was measured at each aging time. Depending on meat pHu, different protein patterns and degradation rates of structural proteins were found. Rapid changes of large structural proteins took place within 48h post mortem. Besides titin and nebulin, degradation of filamin was clearly revealed. Two more large protein bands corresponding to myosin family members also exhibited fast decline with storage time. It suggested that the fast degradation of these proteins is a key factor in the improvement of meat tenderness. PMID:25089788

  4. Influence of ultimate pH and storage temperatures on qualitative components of packaged pork chops

    E-print Network

    Paris-Sud XI, Université de

    Influence of ultimate pH and storage temperatures on qualitative components of packaged pork chops of ultimate pH and storage temperatures on the quality of blister-packed pork chops. After a one-day storage. In meats with a low ultimate pH (pH

  5. Effect of Acacia karroo Supplementation on Growth, Ultimate pH, Colour and Cooking Losses of Meat from Indigenous Xhosa Lop-eared Goats

    PubMed Central

    Ngambu, S.; Muchenje, V.; Marume, U.

    2013-01-01

    The objective of the study was to determine the effect of Acacia karroo supplementation on growth, ultimate pH, colour and cooking losses of meat from indigenous Xhosa lop-eared goats. Eighteen castrated 4-month-old kids were used in the study until slaughter. The kids were subdivided in two treatment groups A. karroo supplemented (AK) and non-supplemented (NS). The supplemented goats were given 200 g per head per d of fresh A. karroo leaves. The kids were slaughtered on d 60 and sample cuttings for meat quality assessment were taken from the Longistimus dorsi muscle. The supplemented kids had higher (p<0.05) growth rates than the non-supplemented ones. The meat from the A. karroo supplemented goats had lower (p<0.05) ultimate pH and cooking loss than the meat from the non-supplemented goats. Acacia karroo supplemented goats produced higher (p<0.05) b* (yellowness) value, but supplementation had no significant effect on L* (lightness) and a* (redness) of the meat. Therefore, A. karroo supplementation improved growth performance and the quality of meat from goats. PMID:25049715

  6. Differential Contributions of the Outer Membrane Receptors PhuR and HasR to Heme Acquisition in Pseudomonas aeruginosa.

    PubMed

    Smith, Aaron D; Wilks, Angela

    2015-03-20

    Pseudomonas aeruginosa PAO1 encodes two outer membrane receptors, PhuR (Pseudomonas heme uptake) and HasR (heme assimilation system). The HasR and PhuR receptors have distinct heme coordinating ligands and substrate specificities. HasR is encoded in an operon with a secreted hemophore, HasAp. In contrast the non-hemophore-dependent PhuR is encoded within an operon along with proteins required for heme translocation into the cytoplasm. Herein we report on the contributions of the HasR and PhuR receptors to heme uptake and utilization. Employing bacterial genetics and isotopic [(13)C]heme labeling studies we have shown both PhuR and HasR are required for optimal heme utilization. However, the unique His-Tyr-ligated PhuR plays a major role in the acquisition of heme. In contrast the HasR receptor plays a primary role in the sensing of extracellular heme and a supplementary role in heme uptake. We propose PhuR and HasR represent non-redundant heme receptors, capable of accessing heme across a wide range of physiological conditions on colonization of the host. PMID:25616666

  7. Structural analysis and identification of PhuS as a heme-degrading enzyme from Pseudomonas aeruginosa.

    PubMed

    Lee, Michael J Y; Schep, Daniel; McLaughlin, Brian; Kaufmann, Martin; Jia, Zongchao

    2014-05-01

    Bacterial pathogens require iron for proliferation and pathogenesis. Pseudomonas aeruginosa is a prevalent Gram-negative opportunistic human pathogen that takes advantage of immunocompromised hosts and encodes a number of proteins for uptake and utilization of iron. Here we report the crystal structures of PhuS, previously known as the cytoplasmic heme-trafficking protein from P. aeruginosa, in both the apo- and the holo-forms. In comparison to its homologue ChuS from Escherichia coli O157:H7, the heme orientation is rotated 180° across the ?-? axis, which may account for some of the unique functional properties of PhuS. In contrast to previous findings, heme binding does not result in an overall conformational change of PhuS. We employed spectroscopic analysis and CO measurement by gas chromatography to analyze heme degradation, demonstrating that PhuS is capable of degrading heme using ascorbic acid or cytochrome P450 reductase-NADPH as an electron donor and produces five times more CO than ChuS. Addition of catalase slows down but does not stop PhuS-catalyzed heme degradation. Through spectroscopic and mass spectrometry analysis, we identified the enzymatic product of heme degradation to be verdoheme. These data taken together suggest that PhuS is a potent heme-degrading enzyme, in addition to its proposed heme-trafficking function. PMID:24560694

  8. The impact of ultimate pH on muscle characteristics and sensory attributes of the longissimus thoracis within the dark cutting (Canada B4) beef carcass grade.

    PubMed

    Holdstock, J; Aalhus, J L; Uttaro, B A; López-Campos, O; Larsen, I L; Bruce, H L

    2014-12-01

    Canada B4 beef carcasses are penalized because the longissimus thoracis (LT) at the grade site (12-13th ribs) is darker than the color threshold for normal bright cherry-red beef. Previous studies have shown that not all B4 carcasses have pH>6.0; therefore, the relationship between LT pH and meat quality was investigated by collecting thirty half-carcasses comprised of the following: ten Canada AA (AA, control), ten B4 with LT pH>6.0 (CL, classic), and ten B4 with LT pH<6.0 (AT, atypical). LT from CL carcasses had the lowest mean lactate level, lowest glucidic potential and highest mean pH value. LT muscle from CL and AT carcasses was dark and had decreased purge, drip loss and cooking loss. Warner-Bratzler shear force values and sensory panel results showed that AT beef was toughest (P<0.0001), substantiating economic penalty. Causal mechanisms for AT carcasses may be inconsistent with traditional DFD theory because of close to normal final muscle pH. PMID:25173716

  9. Sequence stratigraphy and hydrocarbon potential of the Phu Khanh Basin offshore central Vietnam, South China Sea

    SciTech Connect

    Lee, G.H. (Kunsan National Univ. (Korea, Republic of)); Watkins, J.S. (Texas A M Univ., College Station, TX (United States))

    1996-01-01

    The Phu Khanh Basin offshore central Vietnam is one of the few untested basins on the Vietnam margin of the South China Sea. Analysis of over 1,600 km of multi-channel seismic reflection data indicates that the Phu Khanh Basin follows a typical rift-margin order: faulted basement, synrift sedimentation, a breakup unconformity, and postrift sedimentation. Postrift sedimentation consists of a transgressive phase characterized by ramp-like depositional geometries followed by a regressive phase characterized by prograding sequences. An early middle Miocene unconformity separates these two phases. During the transgressive phase rising sea level provided favorable conditions for carbonate buildup development. The regressive interval contains a number of third-order depositional sequences composed of seismically resolvable lowstand, highstand, and rarely, transgressive systems tracts. Lacustrine sediments deposited in graben and half-graben lakes during the rifting stage are probably the principal source rocks. Fractured and/or weathered basement, carbonate complexes, basinfloor fans, and shallows water sands may have good reservoir quality. Potential traps include basement hills, carbonate complexes, fault taps, and stratigraphic traps within lowstand systems tracts. Hydrocarbon indicators such as flat spots, bright spots, gas chimneys with gas mounds on the seafloor occur at a number of locations.

  10. Sequence stratigraphy and hydrocarbon potential of the Phu Khanh Basin offshore central Vietnam, South China Sea

    SciTech Connect

    Lee, G.H. [Kunsan National Univ. (Korea, Republic of); Watkins, J.S. [Texas A& M Univ., College Station, TX (United States)

    1996-12-31

    The Phu Khanh Basin offshore central Vietnam is one of the few untested basins on the Vietnam margin of the South China Sea. Analysis of over 1,600 km of multi-channel seismic reflection data indicates that the Phu Khanh Basin follows a typical rift-margin order: faulted basement, synrift sedimentation, a breakup unconformity, and postrift sedimentation. Postrift sedimentation consists of a transgressive phase characterized by ramp-like depositional geometries followed by a regressive phase characterized by prograding sequences. An early middle Miocene unconformity separates these two phases. During the transgressive phase rising sea level provided favorable conditions for carbonate buildup development. The regressive interval contains a number of third-order depositional sequences composed of seismically resolvable lowstand, highstand, and rarely, transgressive systems tracts. Lacustrine sediments deposited in graben and half-graben lakes during the rifting stage are probably the principal source rocks. Fractured and/or weathered basement, carbonate complexes, basinfloor fans, and shallows water sands may have good reservoir quality. Potential traps include basement hills, carbonate complexes, fault taps, and stratigraphic traps within lowstand systems tracts. Hydrocarbon indicators such as flat spots, bright spots, gas chimneys with gas mounds on the seafloor occur at a number of locations.

  11. Ticks (Acari: Ixodidae) parasitizing wild carnivores in Phu Khieo Wildlife Sanctuary, Thailand.

    PubMed

    Grassman, L I; Sarataphan, N; Tewes, M E; Silvy, N J; Nakanakrat, T

    2004-06-01

    Ixodid ticks were collected and identified from 8 wild carnivore species in Phu Khieo Wildlife Sanctuary, northeastern Thailand. Six tick species belonging to 4 genera were recovered and identified from 132 individuals. These included Amblyomma testudinarium (n = 36), Haemaphysalis asiatica (n = 58), H. hystricis (n = 31), H. semermis (n = 3), Rhipicephalus haemaphysaloides (n = 3), and Ixodes granulatus (n = 1). Leopard cats (Prionailurus bengalensis) (n = 19) were infested with 4 tick species, whereas yellow-throated marten (Martes flavigula) (n = 4), clouded leopard (Neofelis nebulosa) (n = 2), and dhole (Cuon alpinus) (n = 1) were infested with 3 tick species, Asiatic golden cat (Catopuma temmincki) (n = 2) with 2 species, and marbled cat (Pardofelis marmorata), binturong (Arctictis binturong), and large Indian civet (Viverra zibetha) each infested with 1 species. This information contributes to the knowledge available on the ectoparasites of wild carnivores in Southeast Asia. PMID:15270119

  12. Characterization on Mosaic Glass Excavated from Phu Khao Thong (Ranong), Thailand

    NASA Astrophysics Data System (ADS)

    Won-in, K.; Thongkam, Y.; Dhammanonda, W.; Dutchaneephet, J.; Kamwanna, T.; Intarasiri, S.; Tancharakorn, S.; Tanthanuch, W.; Dararutana, P.

    There were many glasses in forms of ornament and decorative objects found in Thailand for several hundred years. The mosaic glass used in this work was fragments that excavated at Phu Khao Thong proto-historic site in Ranong Province, southern area of Thailand which was a shred of glass looked-like Roman mosaic glass. Scanning electron microscope coupled with energy dispersive X-ray fluorescence spectroscopy (SEM-EDS) and proton induced X-ray emission spectroscopy (PIXE) were used to characterize the composition. Micro-beam X-ray fluorescence spectroscopy based on synchrotron radiation (?-SRXRF) was also carried out to analyze its elemental composition and distribution. It was shown that the composition was similar to that of Roman mosaic glass which produced during the early 1st century A.D. The main composition was lead-based glass which colored from transition metals such as iron and copper. It demonstrated the long distance trade or exchange network of the ancient time.

  13. Six-Channel Spectrophotometers (PH) Onboard JEM-GLIMS

    NASA Astrophysics Data System (ADS)

    Sato, Mitsuteru; Takahashi, Yukihiro; Suzuki, Makoto; Yamazaki, Atsushi; Ushio, Tomoo

    Six-channel spectrophotometers (PH) are the science instruments of JEM-GLIMS to measure absolute intensity of the emission originated from lightning discharges and upper atmospheric transient luminous events (TLEs). PH unit-1 (PH-U1) consists of four spectrophotometer channels named from PH1 to PH4, while PH unit-2 (PH-U2) two spectrophotometer channels named PH5 and PH6. Optical filters of these spectrophotometers are selected to detect TLE emission lines of N2 1PG, N2 2PG, N2+ 1NG, and N2 LBH. Since the bandwidth of the optical filter of PH2, 3, 5, and 6 is 10 nm and since PH1 measures NUV emission, photomultiplier tubes with high-voltage converters are used as a photon detector. To the contrary, PH4 uses a photodiode as a photon detector because the pass-band of the optical filter is enough wide to detect transient optical emission. Though PH does not equip spatial resolution, it can acquire light curve data with a high time resolution of 50 ?s with a 12-bit resolution. Thus, the combinational analysis of PH data and Lightning and Sprite Imager (LSI) data, it is possible to clarify the relationship between TLEs and their parent lightning discharges, the occurrence condition of TLEs, and the energy of the electrons which excite TLE emission.

  14. The Ultimate Flag Games.

    ERIC Educational Resources Information Center

    Angel, Kenny; Sutton, Nancy

    This paper describes six Ultimate Flag Games which offer a change from traditional games and sports that are usually geared toward athletically inclined students. These new games, aimed at middle school through college students, allow for success from the least-skilled through the most athletically talented students. Players are ability grouped…

  15. The Ultimate PE Challenge

    ERIC Educational Resources Information Center

    Cerny, Eleanor; Wojehowski, Ken

    2005-01-01

    This article features the Ultimate PE Challenge. The idea had been born when the fifth-grade teachers complained that teaching physical geography was boring, and the technology instructor simultaneously noticed a climbing wall in the gym. "Could physical education simulate the geographic characteristics and obstacles of North America?" This…

  16. Ultimate Safe (US) Reactor

    Microsoft Academic Search

    U. Gat; S. R. Daugherty

    1985-01-01

    The Ultimate Safe (US) Reactor is a reactor that eliminates the traditional safety concerns of nuclear fission reactors. The US reactor has an insignificant source term and no reasonable criticality accident. Furthermore, the negligible residual after-heat in the reactor renders its shutdown capability comparable or superior to conventional power sources. Fission products are continuously removed at the rate they are

  17. The Ultimate Fizz

    ERIC Educational Resources Information Center

    Heckscher, Mary

    2008-01-01

    Many recipes for elementary science activities suggest making carbon dioxide from baking soda and vinegar; however, they often do not give exact measurements of the ingredients. The author was able to turn this "drawback" into a plus by challenging her fifth-grade students to find the "ultimate fizz"--i.,e., "What amount of baking soda added to a…

  18. Registration of "Ultimate" Zoysiagrass

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Ultimate’ (Reg. No. ________, PI 652947) zoysiagrass (Zoysia japonica Steud.) was developed at the Everglades Research and Education Center, IFAS, University of Florida, Belle Glade, FL and initially approved for release in 2004. A plant patent was submitted in mid-2005 and presently awaits exami...

  19. The Ultimate Fizz

    NSDL National Science Digital Library

    Mary Heckscher

    2008-12-01

    Many recipes for elementary science activities suggest making carbon dioxide from baking soda and vinegar; however, they often do not give exact measurements of the ingredients. The author was able to turn this "drawback" into a plus by challenging her fifth-grade students to find the ultimate fizz--i.,e. , "What amount of baking soda added to a set amount of vineagar gives the maximum reaction without having leftover baking soda?" As students investigated this question with enthusiasm, graphing and measurement skills developed in the process.

  20. Ultimate Safe (US) Reactor

    SciTech Connect

    Gat, U.; Daugherty, S.R.

    1985-01-01

    The Ultimate Safe (US) Reactor is a reactor that eliminates the traditional safety concerns of nuclear fission reactors. The US reactor has an insignificant source term and no reasonable criticality accident. Furthermore, the negligible residual after-heat in the reactor renders its shutdown capability comparable or superior to conventional power sources. Fission products are continuously removed at the rate they are produced. The reactor is operated with no excess criticality, hence no criticality accident is reasonably possible. The reactor is controlled safely by its negative temperature coeffiient. The reactor maintains criticality by an internal breeding ratio that is trimmed to be exactly one. The US reactor requires a fluid fuel and on-line, continuous fuel processing. Molten salt fuel was selected for its low vapor pressure at high temperature; adequate solubility of uranium and thorium as fluorides; good compatibility with structural materials; absence of irradiation damage; high negative temperature coefficient and amply developed technology and experience.

  1. Ultimate Cognition à la Gödel

    Microsoft Academic Search

    Jürgen Schmidhuber

    2009-01-01

    All life is problem solving,'' said Popper. To deal with arbitrary problems in arbitrary environments, an ultimate cognitive agent should use its limited hardware in the ''best'' and ''most efficient'' possible way. Can we formally nail down this informal statement, and derive a mathematically rigorous blueprint of ultimate cognition? Yes, we can, using Kurt Godel's celebrated self-reference trick of 1931

  2. Sintering densification and microstructural evolution of injection molding grade 17-4 PH stainless steel powder

    Microsoft Academic Search

    Yunxin Wu; Debby Blaine; Connie Schlaefer; Brian Marx; Randall M. German

    2002-01-01

    Densification behavior is investigated by means of dilatometry for powder-injection-molded (PIM) and die-compacted 17-4 PH\\u000a stainless steel during sintering in pure H2 and H2 + N2. The corresponding microstructural evolution is examined by quenching in a vertical furnace at various stages of sintering.\\u000a The results show that in comparison with pure H2, the H2 + N2 atmosphere retards densification and

  3. Ultimate Realities: Deterministic and Evolutionary

    PubMed Central

    Moxley, Roy A

    2007-01-01

    References to ultimate reality commonly turn up in the behavioral literature as references to determinism. However, this determinism is often difficult to interpret. There are different kinds of determinisms as well as different kinds of ultimate realities for a behaviorist to consider. To clarify some of the issues involved, the views of ultimate realities are treated as falling along a continuum, with extreme views of complete indeterminism and complete determinism at either end and various mixes in between. Doing so brings into play evolutionary realities and the movement from indeterminism to determinism, as in Peirce's evolutionary cosmology. In addition, this framework helps to show how the views of determinism by B. F. Skinner and other behaviorists have shifted over time. PMID:22478489

  4. Intramural Sports Ultimate Disc "Hat"

    E-print Network

    Escher, Christine

    Intramural Sports Ultimate Disc "Hat" Tournament Summer 2014 Intramural Sports Calendar of Events on the day of the tournament, teams will be drawn out of a hat and mixed for play. Sports and Special or Faculty/Staff/Affiliates with a Recreational Sports Membership are eligible to participate. http://oregonstate.edu/recsports/intramural-sports

  5. Ultimate Cost of Building Walls.

    ERIC Educational Resources Information Center

    Grimm, Clayford T.; Gross, James G.

    The need for economic analysis of building walls is discussed, and the factors influencing the ultimate cost of exterior walls are studied. The present worth method is used to analyze three types of exterior non-loadbearing panel or curtain walls. Anticipated costs are expressed in terms of their present value per square foot of wall area. The…

  6. Ultimate Q of optical microsphere resonators

    Microsoft Academic Search

    M. L. Gorodetsky; A. A. Savchenkov; V. S. Ilchenko

    1996-01-01

    of whispering-gallery modes in fused-silica microspheres at 633 nm, close to the ultimate level determined by fundamental material attenuation as measured in optical fibers. The lifetime of ultimate Q is limited by adsorption of atmospheric water. Monitoring of adsorption kinetics with submonolayer sensitivity by Q factors and frequencies of whispering- gallery modes is demonstrated. The possibility of supermaterial Q's owing

  7. Ultimate Cognition a` la Godel Jurgen Schmidhuber

    E-print Network

    Schmidhuber, Juergen

    , and derive a mathematically rigorous blueprint of ultimate cognition? Yes, we can, using Kurt Go¨delUltimate Cognition a` la Go¨del Ju¨rgen Schmidhuber Published online: 5 March 2009 � Springer's celebrated self-reference trick of 1931 in a new way. Go¨del exhibited the limits of mathematics

  8. LINK PROGRAM ULTIMATE KNIGHT TUITION SCHOLARSHIP

    E-print Network

    Foroosh, Hassan

    Scholarship Requirements: Submit a 500 word maximum essay that details how the LINK program has helped you #12;LINK PROGRAM ULTIMATE KNIGHT TUITION SCHOLARSHIP Ultimate Knight Descriptions Get Involved: You are now a member of the UCF community. Find your fit through the many clubs, organizations, and traditions

  9. Atomic Clocks Ultimate Clocks, W. Wayt Gibbs

    E-print Network

    Safronova, Marianna

    Atomic Clocks Ultimate Clocks, W. Wayt Gibbs Scientific American Time 306, 60-67 (19 January 2012-75 (22 January 2014) An Atomic Clock with 10­18 Instability N. Hinkley, J. A. Sherman, N. B. Phillips, M. Rosenband, and D. J. Wineland Science 24 September 2010: 1630-1633. Two Atomic Clocks Ticking as One Bruce

  10. Truman State University Intramurals Ultimate Frisbee

    E-print Network

    Gering, Jon C.

    be completed online (imleagues.com) Competition: Open The object of Ultimate Frisbee is to gain points points at the end of the game is the winner. Simplified Rules 1. Initiate play: Each point begins and becomes the offense. 6. Substitution: Players not in the game may replace players in the game after

  11. Methods of ultimate carbonaceous BOD determination

    USGS Publications Warehouse

    Stamer, J.K.; McKenzie, S.W.; Cherry, R.N.

    1979-01-01

    Studies were conducted to provide an accurate and practical technique for determining the concentration of ultimate carbonaceous biochemical oxygen demand and the rate at which this demand is exerted. The three methods evaluated were carbon derived, nitrification adjusted, and nitrification inhibited. The studies indicate that comparable concentrations and reaction rates can be determined from either non-nitrified samples using no chemical nitrifying inhibitor, or from partially nitrified samples using the chemical inhibitors, 1-allyl-2 thiourea or nitrapyrin, and that the combined use of time-series analysis and Lee's graphical method provide a reliable and accurate technique for determining ultimate biochemical oxygen demand concentration and reaction rate in 5 to 7 days.

  12. Probing the Ultimate Limits of Plasmonic Enhancement

    PubMed Central

    Ciracì, C.; Hill, R. T.; Mock, J. J.; Urzhumov, Y.; Fernández-Domínguez, A. I.; Maier, S. A.; Pendry, J. B.; Chilkoti, A.; Smith, D. R.

    2013-01-01

    Metals support surface plasmons at optical wavelengths and have the ability to localize light to sub-wavelength regions. The field enhancements that occur in these regions set the ultimate limitations on a wide range of nonlinear and quantum optical phenomena. Here we show that the dominant limiting factor is not the resistive loss of the metal, but the intrinsic nonlocality of its dielectric response. A semi-classical model of the electronic response of a metal places strict bounds on the ultimate field enhancement. We demonstrate the accuracy of this model by studying the optical scattering from gold nanoparticles spaced a few angstroms from a gold film. The bounds derived from the models and experiments impose limitations on all nanophotonic systems. PMID:22936772

  13. The ultimate disposition of depleted uranium

    SciTech Connect

    Lemons, T.R. [Uranium Enrichment Organization, Oak Ridge, TN (United States)

    1991-12-31

    Depleted uranium (DU) is produced as a by-product of the uranium enrichment process. Over 340,000 MTU of DU in the form of UF{sub 6} have been accumulated at the US government gaseous diffusion plants and the stockpile continues to grow. An overview of issues and objectives associated with the inventory management and the ultimate disposition of this material is presented.

  14. Ultimate RF Performance Potential of Carbon Electronics

    Microsoft Academic Search

    Siyuranga O. Koswatta; Alberto Valdes-Garcia; Mathias B. Steiner; Yu-Ming Lin; Phaedon Avouris

    2011-01-01

    Carbon electronics based on carbon nanotube array field-effect transistors (AFETs) and 2-D graphene field-effect transistors (GFETs) have recently attracted significant attention for potential RF applications. Here, we explore the ultimate RF performance potential for these two unique devices using semiclas- sical ballistic transport simulations. It is shown that the intrinsic current-gain and power-gain cutoff frequencies ( and ) above 1

  15. The ultimate disposition of depleted uranium

    SciTech Connect

    Not Available

    1990-12-01

    Significant amounts of the depleted uranium (DU) created by past uranium enrichment activities have been sold, disposed of commercially, or utilized by defense programs. In recent years, however, the demand for DU has become quite small compared to quantities available, and within the US Department of Energy (DOE) there is concern for any risks and/or cost liabilities that might be associated with the ever-growing inventory of this material. As a result, Martin Marietta Energy Systems, Inc. (Energy Systems), was asked to review options and to develop a comprehensive plan for inventory management and the ultimate disposition of DU accumulated at the gaseous diffusion plants (GDPs). An Energy Systems task team, under the chairmanship of T. R. Lemons, was formed in late 1989 to provide advice and guidance for this task. This report reviews options and recommends actions and objectives in the management of working inventories of partially depleted feed (PDF) materials and for the ultimate disposition of fully depleted uranium (FDU). Actions that should be considered are as follows. (1) Inspect UF{sub 6} cylinders on a semiannual basis. (2) Upgrade cylinder maintenance and storage yards. (3) Convert FDU to U{sub 3}O{sub 8} for long-term storage or disposal. This will include provisions for partial recovery of costs to offset those associated with DU inventory management and the ultimate disposal of FDU. Another recommendation is to drop the term tails'' in favor of depleted uranium'' or DU'' because the tails'' label implies that it is waste.'' 13 refs.

  16. Ultimate biodegradation of dialkyl phthalate ester plasticizers

    SciTech Connect

    Lee, C.L.; Sinko, C.J.; Winkelmann, D.A.; Peterson, D.R.; Parkerton, T.F. [Exxon Biomedical Sciences, Inc., East Millstone, NJ (United States)

    1995-12-31

    Phthalate Esters (PEs) are primarily used as plasticizers in the polymer industry to impart the desired degree of flexibility to plastic products. The single isomer, di-2-ethylhexyl phthalate (DEHP) is the most common plasticizer. However, other commercially important PE plasticizers possess branched alkyl chains of a mixed isomeric nature. The purpose of this study was to compare the ultimate biodegradability of mixed isomer PEs dihexyl (DHP), diisoheptyl (DIHP), diisononyl (DINP), diisodecyl (DIDP), and diisoundecyl (DIUP) phthalate to DEHP using the standardized OECD test (301 F) which is based on mannometric respirometry. Ultimate biodegradation results after 28 days under unacclimated conditions at 25 C were as follows: DHP (80 {+-} 10%), DIHP (82 {+-} 13%), DEHP (63 {+-} 18%), DINP (70 {+-} 11%), DIDP (67 {+-} 13%), DUP (57 {+-} 14%). These data confirm the readily biodegradable nature of DEHP and mixed isomer PEs reported in previous studies and provide additional data to contradict the misperception that PEs are environmentally persistent. The influence of alkyl chain structure on the rate and extent of biodegradation observed in this and other biodegradation studies are discussed.

  17. SNPs detection in DHPS-WDR83 overlapping genes mapping on porcine chromosome 2 in a QTL region for meat pH

    PubMed Central

    2013-01-01

    Background The pH is an important parameter influencing technological quality of pig meat, a trait affected by environmental and genetic factors. Several quantitative trait loci associated to meat pH are described on PigQTL database but only two genes influencing this parameter have been so far detected: Ryanodine receptor 1 and Protein kinase, AMP-activated, gamma 3 non-catalytic subunit. To search for genes influencing meat pH we analyzed genomic regions with quantitative effect on this trait in order to detect SNPs to use for an association study. Results The expressed sequences mapping on porcine chromosomes 1, 2, 3 in regions associated to pork pH were searched in silico to find SNPs. 356 out of 617 detected SNPs were used to genotype Italian Large White pigs and to perform an association analysis with meat pH values recorded in semimembranosus muscle at about 1 hour (pH1) and 24 hours (pHu) post mortem. The results of the analysis showed that 5 markers mapping on chromosomes 1 or 3 were associated with pH1 and 10 markers mapping on chromosomes 1 or 2 were associated with pHu. After False Discovery Rate correction only one SNP mapping on chromosome 2 was confirmed to be associated to pHu. This polymorphism was located in the 3’UTR of two partly overlapping genes, Deoxyhypusine synthase (DHPS) and WD repeat domain 83 (WDR83). The overlapping of the 3’UTRs allows the co-regulation of mRNAs stability by a cis-natural antisense transcript method of regulation. DHPS catalyzes the first step in hypusine formation, a unique amino acid formed by the posttranslational modification of the protein eukaryotic translation initiation factor 5A in a specific lysine residue. WDR83 has an important role in the modulation of a cascade of genes involved in cellular hypoxia defense by intensifying the glycolytic pathway and, theoretically, the meat pH value. Conclusions The involvement of the SNP detected in the DHPS/WDR83 genes on meat pH phenotypic variability and their functional role are suggestive of molecular and biological processes related to glycolysis increase during post-mortem phase. This finding, after validation, can be applied to identify new biomarkers to be used to improve pig meat quality. PMID:24103193

  18. Ultimately short ballistic vertical graphene Josephson junctions

    PubMed Central

    Lee, Gil-Ho; Kim, Sol; Jhi, Seung-Hoon; Lee, Hu-Jong

    2015-01-01

    Much efforts have been made for the realization of hybrid Josephson junctions incorporating various materials for the fundamental studies of exotic physical phenomena as well as the applications to superconducting quantum devices. Nonetheless, the efforts have been hindered by the diffusive nature of the conducting channels and interfaces. To overcome the obstacles, we vertically sandwiched a cleaved graphene monoatomic layer as the normal-conducting spacer between superconducting electrodes. The atomically thin single-crystalline graphene layer serves as an ultimately short conducting channel, with highly transparent interfaces with superconductors. In particular, we show the strong Josephson coupling reaching the theoretical limit, the convex-shaped temperature dependence of the Josephson critical current and the exceptionally skewed phase dependence of the Josephson current; all demonstrate the bona fide short and ballistic Josephson nature. This vertical stacking scheme for extremely thin transparent spacers would open a new pathway for exploring the exotic coherence phenomena occurring on an atomic scale. PMID:25635386

  19. Ultimately short ballistic vertical graphene Josephson junctions

    NASA Astrophysics Data System (ADS)

    Lee, Gil-Ho; Kim, Sol; Jhi, Seung-Hoon; Lee, Hu-Jong

    2015-01-01

    Much efforts have been made for the realization of hybrid Josephson junctions incorporating various materials for the fundamental studies of exotic physical phenomena as well as the applications to superconducting quantum devices. Nonetheless, the efforts have been hindered by the diffusive nature of the conducting channels and interfaces. To overcome the obstacles, we vertically sandwiched a cleaved graphene monoatomic layer as the normal-conducting spacer between superconducting electrodes. The atomically thin single-crystalline graphene layer serves as an ultimately short conducting channel, with highly transparent interfaces with superconductors. In particular, we show the strong Josephson coupling reaching the theoretical limit, the convex-shaped temperature dependence of the Josephson critical current and the exceptionally skewed phase dependence of the Josephson current; all demonstrate the bona fide short and ballistic Josephson nature. This vertical stacking scheme for extremely thin transparent spacers would open a new pathway for exploring the exotic coherence phenomena occurring on an atomic scale.

  20. Ultimately short ballistic vertical graphene Josephson junctions.

    PubMed

    Lee, Gil-Ho; Kim, Sol; Jhi, Seung-Hoon; Lee, Hu-Jong

    2015-01-01

    Much efforts have been made for the realization of hybrid Josephson junctions incorporating various materials for the fundamental studies of exotic physical phenomena as well as the applications to superconducting quantum devices. Nonetheless, the efforts have been hindered by the diffusive nature of the conducting channels and interfaces. To overcome the obstacles, we vertically sandwiched a cleaved graphene monoatomic layer as the normal-conducting spacer between superconducting electrodes. The atomically thin single-crystalline graphene layer serves as an ultimately short conducting channel, with highly transparent interfaces with superconductors. In particular, we show the strong Josephson coupling reaching the theoretical limit, the convex-shaped temperature dependence of the Josephson critical current and the exceptionally skewed phase dependence of the Josephson current; all demonstrate the bona fide short and ballistic Josephson nature. This vertical stacking scheme for extremely thin transparent spacers would open a new pathway for exploring the exotic coherence phenomena occurring on an atomic scale. PMID:25635386

  1. Ultimate load capacities of expansion anchor bolts

    SciTech Connect

    Czarnecki, R.M. (URS Consultants, San Francisco, CA (United States)); Manrique, M.A. (ABB Impell Corp., San Ramon, CA (United States)); Samaddar, S.K. (Westinghouse Savannah River Co., Aiken, SC (United States))

    1993-08-01

    A summary of available experimental expansion anchor bolt test data is presented. These data were collected as part of programs by the nuclear industry to address generic issues related to verification of seismic adequacy of equipment in nuclear power plants. Some of the data presented are suitable for use in seismic probabilistic risk assessments. For example, mean values of ultimate strength, along with their standard deviation and coefficients of variation, for a range of most typical expansion anchor bolt sizes are presented. Effects of interaction between shear and tension, edge distance, spacing, and cracking of the concrete are presented in a manner that is more suitable for use in deterministic evaluations. Related industry programs to derive anchor bolt capacities are briefly discussed. Recommendations for areas of further investigation are also presented.

  2. Probabilistic metrology defeats ultimate deterministic bound

    E-print Network

    J. Calsamiglia; B. Gendra; R. Munoz-Tapia; E. Bagan

    2014-07-25

    Quantum-enhanced measurements exploit quantum mechanical effects to provide ultra-precise estimates of physical variables for use in advanced technologies, such as frequency calibration of atomic clocks, gravitational waves detection, and biosensing. Quantum metrology studies the fundamental limits in the estimation precision given a certain amount of resources (e.g. the number of probe systems) and restrictions (e.g. limited interaction time, or coping with unavoidable presence of noise). Here we show that, even in the presence of noise, probabilistic measurement strategies (which have a certain probability of failure or abstention) can provide, upon a heralded successful outcome, estimates with a precision that violates the deterministic bounds. This establishes a new ultimate quantum metrology limit. For probe systems subject to local dephasing, we quantify such precision limit as a function of the probability of failure that can be tolerated. We show that the possibility of abstaining can substantially set back the detrimental effects of noise.

  3. The Phenix ultimate natural convection test

    SciTech Connect

    Gauthe, P. [CEA, DER, SESI, F-13108, Saint Paul lez Durance (France); Pialla, D.; Tenchine, D. [CEA, DEN, STMF, F-38054, Grenoble (France); Vasile, A. [CEA, DER, SESI, F-13108, Saint Paul lez Durance (France); Rochwerger, D. [CEA, DEN, DEIM, F-30207, Bagnols-sur-Ceze (France)

    2012-07-01

    The French sodium cooled fast reactor Phenix was shut down in 2009 after 35 years of operation. Before decommissioning, a final set of tests were performed by the CEA during 9 months. Several topics were involved such as thermal hydraulics, core physics and fuel behaviour. Among these ultimate experiments, two thermal hydraulic tests were performed: an asymmetrical test consisting in a trip of one secondary pump and a natural convection test in the primary circuit. Recognizing the unique opportunity offered by these Phenix ultimate tests, IAEA decided in 2007 to launch a Coordinated Research Project (CRP) devoted to benchmarking analyses with system codes on the Phenix natural convection test. One objective of the natural convection test in Phenix reactor is the assessment of the CATHARE system code for safety studies on future and advanced sodium cooled fast reactors. The aim of this paper is to describe this test, which was performed on June 22-23, 2009, and the associated benchmark specifications for the CRP work. The paper reminds briefly the Phenix reactor with the main physical parameters and the instrumentation used during the natural convection test. After that, the test scenario is described: - initial state at a power of 120 MWth, - test beginning resulting from a manual dry out of the two steam generators, - manual scram, - manual trip on the three primary pumps without back-up by pony motors, - setting and development of natural convection in the primary circuit, in a first phase without significant heat sink in the secondary circuits and in a second phase with significant heat sink in the secondary circuits, by opening the casing of steam generators to create an efficient heat sink, by air natural circulation in the steam generators casing. The benchmark case ends after this second phase, which corresponds to the experimental test duration of nearly 7 hours. The paper presents also the benchmark specifications data supplied by the CEA to all participants of this CRP in order to perform calculations (core, primary circuit, primary pumps, IHX, shutdown system, operating parameters, test scenario and real test conditions). Finally, main test results and analyses are presented including the evolution of the core and of the heat exchangers inlet and outlet temperatures, and some local temperature measurements. The natural convection has been easily set up in the pool type reactor Phenix with different boundary conditions at the secondary side, with or without heat sink. The data obtained during this unique test represent some very useful and precious results for the development of SFR in a wide range of thematic such as numerical methods dedicated to thermal-hydraulics safety analyses (system codes, CFD codes and coupling system and CFD codes) and instrumentation. (authors)

  4. Bilabiate Flowers: The Ultimate Response to Bees?

    PubMed Central

    Westerkamp, Christian; Claßen-Bockhoff, Regine

    2007-01-01

    Background and Aims Bilabiate flowers have evolved in many lineages of the angiosperms, thus representing a convincing example of parallel evolution. Similar to keel blossoms, they have obviously evolved in order to protect pollen against pollen-collecting bees. Although many examples are known, a comprehensive survey on floral diversity and functional constraints of bilabiate flowers is lacking. Here, the concept is widened and described as a general pattern. Methods The present paper is a conceptional review including personal observations of the authors. To form a survey on the diversity of bilabiate blossoms, a search was made for examples across the angiosperms and these were combined with personal observations collected during the last 25 years, coupled with knowledge from the literature. New functional terms are introduced that are independent of morphological and taxonomic associations. Key Results Bilabiate constructions occur in at least 38 angiosperm families. They are characterized by dorsiventral organization and dorsal pollen transfer. They are most often realised on the level of a single flower, but may also be present in an inflorescence or as part of a so-called ‘walk-around flower’. Interestingly, in functional terms all nototribic blossoms represent bilabiate constructions. The great majority of specialized bee-flowers can thus be included under bilabiate and keel blossoms. The syndrome introduced here, however, also paves the way for the inclusion of larger animals such as birds and bats. The most important evolutionary trends appear to be in the saving of pollen and the precision of its transfer. With special reference to the Lamiales, selected examples of bilabiate flowers are presented and their functional significance is discussed. Conclusions Bilabiate blossoms protect their pollen against pollen-collecting bees and at the same time render their pollination more precisely. The huge diversity of realised forms indicate the high selection pressure towards the bilabiate syndrome. As bees are very inventive, however, bilabiate constructions will not represent the ultimate response to bees. PMID:17652341

  5. "Got Disc?" The "Ultimate" Experience in Physical Education

    ERIC Educational Resources Information Center

    Johnson, Tyler G.; Darst, Paul W.; Brusseau, Timothy A.

    2006-01-01

    A quality physical education program is one in which students are exposed to and can participate in a variety of sports and activities. One activity that is increasing in popularity in and outside of physical education is the game of "Ultimate." Opportunities to play Ultimate are increasing rapidly in intramural programs and community and…

  6. The ultimate rendezvous: microbial ecology meets industrial biotechnology

    E-print Network

    McFall-Ngai, Margaret

    The ultimate rendezvous: microbial ecology meets industrial biotechnology Editorial overview and likely, as well as actual, applications for environmental, industrial and health-related biotechnology about by the plethora of emissions associated with industrial growth. At the same time, economic

  7. Centaur Standard Shroud (CSS) static ultimate load structural tests

    NASA Technical Reports Server (NTRS)

    1975-01-01

    A series of tests were conducted on the jettisonable metallic shroud used on the Titan/Centaur launch vehicle to verify its structural capabilities and to evaluate its structural interaction with the Centaur stage. A flight configured shroud and the interfacing Titan/Centaur structural assemblies were subjected to tests consisting of combinations of applied axial and shear loads to design ultimate values, including a set of tests on thermal conditions and two dynamic response tests to verify the analytical stiffness model. The strength capabilities were demonstrated at ultimate (125 percent of design limit) loads. It was also verified that the spring rate of the flight configured shroud-to-Centaur forward structural deflections of the specimen became nonlinear, as expected, above limit load values. This test series qualification program verified that the Titan/Centaur shroud and the Centaur and Titan interface components are qualified structurally at design ultimate loads.

  8. Ultimate Success Rates on National Board Examinations: A Research Brief.

    ERIC Educational Resources Information Center

    Gross, Leon J.; Wallis, Norman E.; Present, Richard K.

    1999-01-01

    A study investigated the percentage of optometry students successfully completing the four-component National Board of Examiners in Optometry examination at graduation between 1995 to 1997. Ultimate pass rates for all four components ranged from 87.0% to 90.9%. Results are discussed in relation to the 1993 test-sequence expansion and to the number…

  9. A process inherent ultimate safety boiling water reactor

    Microsoft Academic Search

    1986-01-01

    A new type of boiling water reactor (BWR) - the process inherent ultimate safety (PIUS) BWR - has been conceived. A PIUS BWR is an advanced BWR that differs from the typical BWR in that a prestressed concrete reactor vessel (PCRV) with special internals replaces the conventional pressure vessel, emergency core cooling system, containment shell, spent fuel storage ponds, and

  10. Dulye Leadership Experience The Ultimate Professional Development Experience

    E-print Network

    Crowston, Kevin

    Dulye Leadership Experience The Ultimate Professional Development Experience: Dulye Leadership Experience Do YOU have what it takes to join the team? Find out more at dle.dulye.com Facebook: https://www.facebook.com/DulyeLeadershipExperience Twitter: DLE4SU #12;Dulye Leadership Experience Program Overview Dulye Leadership Experience The Dulye

  11. Ultimate Attainment in Interlanguage Grammars: A Prosodic Approach

    ERIC Educational Resources Information Center

    Goad, Heather; White, Lydia

    2006-01-01

    In this article, we argue against the Representational Deficit Hypothesis, according to which second language (L2) speakers can never acquire functional categories or features that are absent in the first language (L1), suggesting that fossilization is inevitable. Instead, we support the Prosodic Transfer Hypothesis, which argues that the ultimate

  12. Proximate and Ultimate Mechanisms of Spiny Lobster Gregariousness

    E-print Network

    Childress, Michael J.

    Abstract Proximate and Ultimate Mechanisms of Spiny Lobster Gregariousness Ken Sercy and Michael show clear differences in spiny lobster gregariousness. Panulirus argus is usually found sharing variation in lobster distribution and fitness. Spiny lobsters are a convenient model system for studying

  13. The Ultimate Messier Object Log PDF Enter Notes

    E-print Network

    Oldenburg, Carl von Ossietzky Universität

    by Messier # List star atlas info for all objects, sorted by Messier #. Credits & Copyrights Visit the SEDS notes, sort on several different fields, and print field notes for star parties. This special version Page #12;The Ultimate Messier Log M001Messier # TaurusConstellation CBinocular Difficulty Chart Page

  14. The Ultimate Sampling Dilemma in Experience-Based Decision Making

    ERIC Educational Resources Information Center

    Fiedler, Klaus

    2008-01-01

    Computer simulations and 2 experiments demonstrate the ultimate sampling dilemma, which constitutes a serious obstacle to inductive inferences in a probabilistic world. Participants were asked to take the role of a manager who is to make purchasing decisions based on positive versus negative feedback about 3 providers in 2 different product…

  15. Hybrid Dynamical Systems, or HDS: The Ultimate Switching Experience

    E-print Network

    Branicky, Michael S.

    Hybrid Dynamical Systems, or HDS: The Ultimate Switching Experience Michael S. Branicky Laboratory concentrated on formalizing the notion of a hybrid system as switching among an indexed collection of dynamical give a quick overview of the area of hybrid systems. I also briefly review the formal definition

  16. A CPSO-SVM Model for Ultimate Bearing Capacity Determination

    Microsoft Academic Search

    Hong-bo Zhao; Shunde Yin

    2010-01-01

    In this study, the CPSO-SVM models, which combine chaotic system, particle swarm optimization (PSO) and support vector machine (SVM), are presented and applied to predict the ultimate bearing capacity of shallow foundations. Chaotic mapping enjoys certainty, ergodicity and the stochastic property. Chaotic PSO (CPSO) increases the convergence rate of PSO and precision of the results through introducing chaos mapping into

  17. Estimation of ultimate safe loads in elastic stability theory

    Microsoft Academic Search

    Millard F. Beatty

    1971-01-01

    Ultimate safe load estimates are derived for general isotropic materials. Conditions sufficient to assure stability of equilibrium in the dead load traction boundary value problem are obtained from an energy type criterion by application of certain inequalities and by subsequent separation of the incremental shear strain components from the others. Specific estimates are provided for stability of the undistorted states

  18. Modelling Primate Social Order: Ultimate and Proximate Explanations

    E-print Network

    Bryson, Joanna J.

    Modelling Primate Social Order: Ultimate and Proximate Explanations Hagen Lehmann and Joanna J.Lehmann@bath.ac.uk, J.J.Bryson@bath.ac.uk Abstract. For many species of primates, arguably including humans, social be understanding the bases of our social interaction. For many primate species social be- haviour has been

  19. Welcome to Hawaii The Ultimate Global Gathering Place

    E-print Network

    Park, Seong-Ook

    Aloha Welcome to Hawaii The Ultimate Global Gathering Place On behalf of Professor Mike Jensen to the beautiful Islands of Hawaii. Besides the beauty of the State, we are delighted to offer you an informative. The tropical Islands of Hawaii offer ample opportunities to relax and unwind. Possibly more than any place else

  20. The protection of bovine skeletal myofibrils from proteolytic damage post mortem by small heat shock proteins.

    PubMed

    Lomiwes, D; Hurst, S M; Dobbie, P; Frost, D A; Hurst, R D; Young, O A; Farouk, M M

    2014-08-01

    This study aimed to determine how small heat shock proteins (sHSPs) protect myofibrillar proteins from ?-calpain degradation during ageing. Immunoprecipitation experiments with M. longissimus dorsi (LD) from Angus heifers (n = 14) examined the interaction between ??-crystallin, desmin, titin, HSP20, HSP27 and ?-calpain. Results showed that ??-crystallin associated with desmin, titin, HSP20, HSP27 and ?-calpain. Exogenous ??-crystallin reduced desmin and titin degradations in myofibrillar extracts and attenuated ?-calpain activity. In a second experiment, bull LD (n = 94) were aged at -1.5°C for up to 28 days post mortem. ?-Calpain autolysed faster in high ultimate pH (pH(u)) meat (pH(u)?6.2) and this was concomitant with the more rapid degradation of titin and filamin in this pH(u) group. Desmin stability in intermediate pH(u) meat (pH(u) 5.8 to 6.19) may be due to the protection of myofibril-bound sHSPs combined with the competitive inhibition of ?-calpain by sHSPs. PMID:24769876

  1. 7 CFR 4274.361 - Requests to make loans to ultimate recipients.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 2010-01-01 false Requests to make loans to ultimate recipients. 4274...Program (IRP) § 4274.361 Requests to make loans to ultimate recipients. (a) An intermediary may use revolved funds to make loans to ultimate recipients...

  2. 75 FR 60133 - Agency Information Collection Activities: Declaration of Ultimate Consignee That Articles Were...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-29

    ...Declaration of Ultimate Consignee That Articles Were Exported for Temporary Scientific...Declaration of Ultimate Consignee That Articles Were Exported for Temporary Scientific...Declaration of Ultimate Consignee That Articles Were Exported for Temporary...

  3. 75 FR 76746 - Agency Information Collection Activities: Declaration of Ultimate Consignee That Articles Were...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-09

    ...Declaration of Ultimate Consignee That Articles Were Exported for Temporary Scientific...Declaration of Ultimate Consignee That Articles Were Exported for Temporary Scientific...Declaration of Ultimate Consignee That Articles Were Exported for Temporary...

  4. 78 FR 69101 - Agency Information Collection Activities: Declaration of the Ultimate Consignee That Articles...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-18

    ...Declaration of the Ultimate Consignee That Articles Were Exported for Temporary Scientific...Declaration of the Ultimate Consignee that Articles were Exported for Temporary Scientific...Declaration of the Ultimate Consignee that Articles were Exported for Temporary...

  5. Ultimate classical communication rates of quantum optical channels

    NASA Astrophysics Data System (ADS)

    Giovannetti, V.; García-Patrón, R.; Cerf, N. J.; Holevo, A. S.

    2014-10-01

    Optical channels, such as fibres or free-space links, are ubiquitous in today's telecommunication networks. They rely on the electromagnetic field associated with photons to carry information from one point to another in space. A complete physical model of these channels must necessarily take quantum effects into account to determine their ultimate performances. Single-mode, phase-insensitive bosonic Gaussian channels have been extensively studied over past decades, given their importance for practical applications. In spite of this, a long-standing unsolved conjecture on the optimality of Gaussian encodings has prevented finding their classical communication capacity. Here, this conjecture is solved by proving that the vacuum state achieves the minimum output entropy of these channels. This establishes the ultimate achievable bit rate under an energy constraint, as well as the long awaited proof that the single-letter classical capacity of these channels is additive.

  6. The Ultimate Fate of Life in an Accelerating Universe

    E-print Network

    Katherine Freese; William H. Kinney

    2002-05-24

    The ultimate fate of life in a universe with accelerated expansion is considered. Previous work showed that life cannot go on indefinitely in a universe dominated by a cosmological constant. In this paper we consider instead other models of acceleration (including quintessence and Cardassian expansion). We find that it is possible in these cosmologies for life to persist indefinitely. As an example we study potentials of the form $V \\propto \\phi^n$ and find the requirement $n < -2$.

  7. Process inherent ultimate safety boiling-water reactor

    Microsoft Academic Search

    2009-01-01

    The article describes a Process Inherent Ultimate Safety (PIUS) boiling-water reactor (BWR). Its design may eliminate the possibility of reactor core meltdown and simplify reactor design. The PIUS\\/BWR uses the pressure vessel and two-zone water concepts of the PIUS pressurized-water reactor, a fluidic in-vessel emergency core cooling system, and a low excess reactivity core. In an emergency the PIUS\\/BWR does

  8. Preventing Ultimate Harm as the Justification for Biomoral Modification.

    PubMed

    Murphy, Timothy F

    2014-09-01

    Most advocates of biogenetic modification hope to amplify existing human traits in humans in order to increase the value of such traits as intelligence and resistance to disease. These advocates defend such enhancements as beneficial for the affected parties. By contrast, some commentators recommend certain biogenetic modifications to serve social goals. As Ingmar Persson and Julian Savulescu see things, human moral psychology is deficient relative to the most important risks facing humanity as a whole, including the prospect of Ultimate Harm, the point at which worthwhile life is forever impossible on the planet. These risks can be mitigated, they say, by enhancing moral psychology in novel ways. Persson and Savulescu argue that some parents should modify the underlying biogenetics of their children's moral psychology, if such measures were safe and effective, but they admit these interventions may not decouple humanity from Ultimate Harm. Neither are these modifications the only options, they concede, for addressing risks to humanity. Even with these concessions, saving humanity from itself is a fairly poor reason to modify the moral psychology of children. In most ways, adults would be better candidates, morally speaking, for modifications of psychology. Even then, there is no direct link between morally enhanced human beings and the hoped-for effect of better protection from Ultimate Harm. Asserting a general duty of all to contribute to the avoidance of Ultimate Harm is a better moral strategy than intervening in the moral psychology of some, even though meeting that duty may involve substantial interference with the free exercise of one's interests. PMID:25186171

  9. Silicon wafer-based tandem cells: The ultimate photovoltaic solution?

    NASA Astrophysics Data System (ADS)

    Green, Martin A.

    2014-03-01

    Recent large price reductions with wafer-based cells have increased the difficulty of dislodging silicon solar cell technology from its dominant market position. With market leaders expected to be manufacturing modules above 16% efficiency at 0.36/Watt by 2017, even the cost per unit area (60-70/m2) will be difficult for any thin-film photovoltaic technology to significantly undercut. This may make dislodgement likely only by appreciably higher energy conversion efficiency approaches. A silicon wafer-based cell able to capitalize on on-going cost reductions within the mainstream industry, but with an appreciably higher than present efficiency, might therefore provide the ultimate PV solution. With average selling prices of 156 mm quasi-square monocrystalline Si photovoltaic wafers recently approaching 1 (per wafer), wafers now provide clean, low cost templates for overgrowth of thin, wider bandgap high performance cells, nearly doubling silicon's ultimate efficiency potential. The range of possible Si-based tandem approaches is reviewed together with recent results and ultimate prospects.

  10. pH Protocol

    NSDL National Science Digital Library

    The GLOBE Program, UCAR (University Corporation for Atmospheric Research)

    2005-06-02

    The purpose of this resource is to measure the pH of water. Students use either a pH meter or pH paper to measure the pH. If using the pH meter, the meter needs to be calibrated with buffer solutions that have pH values of 4, 7, and 10.

  11. The ultimate quantum limits on the accuracy of measurements

    NASA Technical Reports Server (NTRS)

    Yuen, Horace P.

    1992-01-01

    A quantum generalization of rate-distortion theory from standard communication and information theory is developed for application to determining the ultimate performance limit of measurement systems in physics. For the estimation of a real or a phase parameter, it is shown that the root-mean-square error obtained in a measurement with a single-mode photon level N cannot do better than approximately N exp -1, while approximately exp(-N) may be obtained for multi-mode fields with the same photon level N. Possible ways to achieve the remarkable exponential performance are indicated.

  12. Some Physics Constraints on Ultimate Achievement in Track and Field

    SciTech Connect

    Cliff Frohlich

    2009-02-06

    World records in track and field have improved remarkably throughout the last 100 years; however, in several events physics places quite strict limitations on ultimate performance. For example, analysis suggests that records in broad jump and pole vault have approached their optimum possible values. Physical constraints are more subtle for events such as javelin, high jump, and the distance races, and thus there may be opportunities for “breakthroughs” in current records. Considering that there is enormous cultural interest and economic expenditure on sports, for most events the level of scientific analysis isn’t very high. This presents a research opportunity for fans who are engineers or physicists.

  13. The Ultimate Challenge: Prove B. F. Skinner Wrong

    PubMed Central

    Chance, Paul

    2007-01-01

    For much of his career, B. F. Skinner displayed the optimism that is often attributed to behaviorists. With time, however, he became less and less sanguine about the power of behavior science to solve the major problems facing humanity. Near the end of his life he concluded that a fair consideration of principles revealed by the scientific analysis of behavior leads to pessimism about our species. In this article I discuss the case for Skinner's pessimism and suggest that the ultimate challenge for behavior analysts today is to prove Skinner wrong. PMID:22478494

  14. What is the Ultimate Goal in Acid-Base Regulation?

    ERIC Educational Resources Information Center

    Balakrishnan, Selvakumar; Gopalakrishnan, Maya; Alagesan, Murali; Prakash, E. Sankaranarayanan

    2007-01-01

    It is common to see chapters on acid-base physiology state that the goal of acid-base regulatory mechanisms is to maintain the pH of arterial plasma and not arterial PCO [subscript 2] (Pa[subscript CO[subscript 2

  15. pH inactivation of phosphofructokinase arrests postmortem glycolysis.

    PubMed

    England, Eric M; Matarneh, Sulaiman K; Scheffler, Tracy L; Wachet, Céline; Gerrard, David E

    2014-12-01

    Fresh meat quality development is influenced by pH decline that results from muscle glycolyzing energy substrates postmortem. The exact reason why glycolysis stops in the presence of residual glycogen remains unclear. We hypothesized that a critical glycolytic enzyme loses activity near the ultimate pH of meat. Porcine longissimus muscle samples were subjected to an in vitro system that mimics postmortem anaerobic metabolism at buffered pH values (7.0, 6.5, 6.0, 5.5 or 5.0). At pH7.0, 6.5, and 6.0, glycogenolysis and glycolysis proceeded normally while pH5.5 stopped lactate formation. Additional experimentation indicated that phosphofructokinase lost activity at pH5.5 while all other glycolytic enzymes remained active. A similar inactivation of phosphofructokinase was observed when using chicken and beef muscle. Elevated temperature hastened pH decline and phosphofructokinase activity loss. Thus, pH inactivates phosphofructokinase and arrests postmortem glycolysis, which may explain the similar ultimate pH across meat of different species. PMID:25179446

  16. Ultimate boundedness stability and controllability of hereditary systems

    NASA Technical Reports Server (NTRS)

    Chukwu, E. N.

    1979-01-01

    By generalizing the Liapunov-Yoshizawa techniques, necessary and sufficient conditions are given for uniform boundedness and uniform ultimate boundedness of a rather general class of nonlinear differential equations of neutral type. Among the applications treated by the methods are the Lienard equation of neutral type and hereditary systems of Lurie type. The absolute stability of this later equation is also investigated. A certain existence result of a solution of a neutral functional differential inclusion with two point boundary values is applied to study the exact function space controllability of a nonlinear neutral functional differential control system. A geometric growth condition is used to characterize both the function space and Euclidean controllability of another nonlinear delay system which has a compact and convex control set. This yields conditions under which perturbed nonlinear delay controllable systems are controllable.

  17. Plug nozzles: The ultimate customer driven propulsion system

    NASA Technical Reports Server (NTRS)

    Aukerman, Carl A.

    1991-01-01

    This paper presents the results of a study applying the plug cluster nozzle concept to the propulsion system for a typical lunar excursion vehicle. Primary attention for the design criteria is given to user defined factors such as reliability, low volume, and ease of propulsion system development. Total thrust and specific impulse are held constant in the study while other parameters are explored to minimize the design chamber pressure. A brief history of the plug nozzle concept is included to point out the advanced level of technology of the concept and the feasibility of exploiting the variables considered in this study. The plug cluster concept looks very promising as a candidate for consideration for the ultimate customer driven propulsion system.

  18. Ultimate photovoltage in perovskite oxide heterostructures with critical film thickness

    SciTech Connect

    Wang Cong; Jin Kuijuan; Zhao Ruiqiang; Lu Huibin; Guo Haizhong; Ge Chen; He Meng; Wang Can; Yang Guozhen [Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)

    2011-05-02

    One order larger photovoltage is obtained with critical thicknesses of La{sub 0.9}Sr{sub 0.1}MnO{sub 3} films in both kinds of heterostructures of La{sub 0.9}Sr{sub 0.1}MnO{sub 3}/SrTiO{sub 3} (0.8 wt % Nb-doped) and La{sub 0.9}Sr{sub 0.1}MnO{sub 3}/Si fabricated at various oxygen pressures. Our self-consistent calculation reveals that the critical thickness of the La{sub 0.9}Sr{sub 0.1}MnO{sub 3} film with the ultimate value of photovoltage is just the thickness of the depletion layer of La{sub 0.9}Sr{sub 0.1}MnO{sub 3} in both heterojunctions, respectively.

  19. Atmospheric effects and ultimate ranging accuracy for lunar laser ranging

    NASA Astrophysics Data System (ADS)

    Currie, Douglas G.; Prochazka, Ivan

    2014-10-01

    The deployment of next generation lunar laser retroreflectors is planned in the near future. With proper robotic deployment, these will support single shot single photo-electron ranging accuracy at the 100 micron level or better. There are available technologies for the support at this accuracy by advanced ground stations, however, the major question is the ultimate limit imposed on the ranging accuracy due to the changing timing delays due to turbulence and horizontal gradients in the earth's atmosphere. In particular, there are questions of the delay and temporal broadening of a very narrow laser pulse. Theoretical and experimental results will be discussed that address estimates of the magnitudes of these effects and the issue of precision vs. accuracy.

  20. Helium separation via porous silicene based ultimate membrane.

    PubMed

    Hu, Wei; Wu, Xiaojun; Li, Zhenyu; Yang, Jinlong

    2013-10-01

    Helium purification has become more important for increasing demands in scientific and industrial applications. In this work, we demonstrated that the porous silicene can be used as an effective ultimate membrane for helium purification on the basis of first-principles calculations. Prinstine silicene monolayer is impermeable to helium gas with a high penetration energy barrier (1.66 eV). However, porous silicene with either Stone-Wales (SW) or divacancy (555,777 or 585) defect presents a surmountable barrier for helium (0.33 to 0.78 eV) but formidable for Ne, Ar, and other gas molecules. In particular, the porous silicene with divacancy defects shows high selectivity for He/Ne and He/Ar, superior to graphene, polyphenylene, and traditional membranes. PMID:23917262

  1. What is the Ultimate Goal in Acid-base Regulation?

    NSDL National Science Digital Library

    Selvakumar Balakrishnan (Postgraduate Medical Education and Research Department of Physiology, Jawaharlal Institute)

    2007-03-01

    Chapters on acid-base physiology often state that the goal of acid-base regulatory mechanisms is to maintain the pH of arterial plasma and not arterial PCO2 or plasma HCO3. A hypothetical situation in which the PaCO2 of arterial plasma is 80 mmHg and the plasma HCO3 concentration is 48 mM is presented and analyzed to get over this misconception.

  2. pH

    NSDL National Science Digital Library

    This lab activity is designed to teach students how to test for pH and understand its relationship to them and their environment. They will learn what pH is, draw and label a pH scale, measure the pH of various items, and explain why it's important to understand pH, for example, the danger presented by substances having very high or low pH.

  3. Future Synchrotron Light Sources Based on Ultimate Storage Rings

    SciTech Connect

    Cai, Yunhai; /SLAC

    2012-04-09

    The main purpose of this talk is to describe how far one might push the state of the art in storage ring design. The talk will start with an overview of the latest developments and advances in the design of synchrotron light sources based on the concept of an 'ultimate' storage ring. The review will establish how bright a ring based light source might be, where the frontier of technological challenges are, and what the limits of accelerator physics are. Emphasis will be given to possible improvements in accelerator design and developments in technology toward the goal of achieving an ultimate storage ring. An ultimate storage ring (USR), defined as an electron ring-based light source having an emittance in both transverse planes at the diffraction limit for the range of X-ray wavelengths of interest for a scientific community, would provide very high brightness photons having high transverse coherence that would extend the capabilities of X-ray imaging and probe techniques beyond today's performance. It would be a cost-effective, high-coherence 4th generation light source, competitive with one based on energy recovery linac (ERL) technology, serving a large number of users studying material, chemical, and biological sciences. Furthermore, because of the experience accumulated over many decades of ring operation, it would have the great advantage of stability and reliability. In this paper we consider the design of an USR having 10-pm-rad emittance. It is a tremendous challenge to design a storage ring having such an extremely low emittance, a factor of 100 smaller than those in existing light sources, especially such that it has adequate dynamic aperture and beam lifetime. In many ultra-low emittance designs, the injection acceptances are not large enough for accumulation of the electron beam, necessitating on-axis injection where stored electron bunches are completely replaced with newly injected ones. Recently, starting with the MAX-IV 7-bend achromatic cell, we have made significant progress with the design of PEP-X, a USR that would inhabit the decommissioned PEP-II tunnel at SLAC. The enlargement of the dynamic aperture is largely a result of the cancellations of the 4th-order resonances in the 3rd-order achromats and the effective use of lattice optimization programs. In this paper, we will show those cancellations of the 4th-order resonances using an analytical approach based on the exponential Lie operators and the Poisson brackets. Wherever possible, our analytical results will be compared with their numerical counterparts. Using the derived formulae, we will construct 4th-order geometric achromats and use them as modules for the lattice of the PEP-X USR, noting that only geometric terms are canceled to the 4th order.

  4. CATHARE calculations of Phenix ultimate natural convection test

    SciTech Connect

    Pialla, D.; Tenchine, D. [CEA, DEN, DM2S/STMF, Grenoble, F-17 rue des Martyrs, 38000 Grenoble (France); Gauthe, P. [CEA, DEN, DER/SESI, Cadarache, F-13108 Saint Paul lez Durance (France); Vasile, A. [CEA, DEN, DER, Cadarache, F-13108 Saint Paul lez Durance (France)

    2012-07-01

    The Phenix Sodium cooled Fast Reactor (SFR) started operation in 1973 and it was stopped in 2009. Before the reactor was definitively shutdown, in order to collect experimental data for code assessments in the frame of Generation IV an intensive program of ultimate tests was set up. Among these ultimate experiments, two thermal hydraulic tests were performed: an asymmetrical test consisting in a trip on one secondary pump and a natural convection test in the primary circuit. The natural convection test has been used for an international benchmark on system codes in the frame of the IAEA. The CATHARE code - initially developed for water cooled reactors and now extended for safety analyses for other kinds of reactors, including Sodium Fast Reactor - was used by CEA for this benchmark. The paper reminds briefly the Phenix reactor with the main physical parameters and the instrumentation used during the natural convection test. Main test results are also briefly reminded including the evolution of the core and the heat exchangers inlet and outlet temperatures, and some local temperature measurements. The main developments to perform CATHARE SFR computations and the strategy of system code assessment are presented. Then the CATHARE modelling of Phenix reactor is depicted and the various assumptions are pointed out. CATHARE encountered no problem to predict the initial nominal state. Afterwards, the whole transient scenario is calculated and CATHARE calculations are compared to the Phenix measurements. The global trend is rather well predicted by the CATHARE code. Nevertheless, due to complex flow phenomena occurring in large plena and components, the system code encountered physical limitations, leading to remaining discrepancies between code prediction and plant data. Various sensitivity calculations are presented and they bring partial answers. Additional analyses are in progress to understand more deeply the complex 3D phenomena involved during the different phases of the natural convection test. Additional work for coupling CATHARE system code and TRIO-U CFD code is in progress and will bring useful information to better understand the physical phenomena involved during the natural convection test and to improve system modeling for future SFR safety analysis. (authors)

  5. 7 CFR 4280.21 - Eligible REDG Ultimate Recipients and Projects.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ...Ultimate Recipients and Projects. 4280.21 Section...Continued) RURAL BUSINESS-COOPERATIVE SERVICE...Ultimate Recipients and Projects. The Intermediary...or Community Facility Projects that: (i) will...Recipient; (2) Business Incubators;...

  6. 7 CFR 4280.29 - Supplemental financing required for the Ultimate Recipient Project.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ...required for the Ultimate Recipient Project. 4280.29 Section 4280...Agriculture (Continued) RURAL BUSINESS-COOPERATIVE SERVICE AND...for the Ultimate Recipient Project. (a) For REDL loans...supplemental funds for the Project equal to at least 20...

  7. 26 CFR 48.6427-11 - Kerosene; claims by registered ultimate vendors (blending).

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...relating to kerosene sold from a blocked pump for nontaxable uses are...registered ultimate vendors (blocked pump) under § 48.6427-10...registered ultimate vendor (blocked pump). (c) Conditions...The claimant's registration number. (ii) The total...

  8. 26 CFR 48.6427-11 - Kerosene; claims by registered ultimate vendors (blending).

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...relating to kerosene sold from a blocked pump for nontaxable uses are...registered ultimate vendors (blocked pump) under § 48.6427-10...registered ultimate vendor (blocked pump). (c) Conditions...The claimant's registration number. (ii) The total...

  9. 26 CFR 48.6427-11 - Kerosene; claims by registered ultimate vendors (blending).

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...relating to kerosene sold from a blocked pump for nontaxable uses are...registered ultimate vendors (blocked pump) under § 48.6427-10...registered ultimate vendor (blocked pump). (c) Conditions...The claimant's registration number. (ii) The total...

  10. 26 CFR 48.6427-11 - Kerosene; claims by registered ultimate vendors (blending).

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...relating to kerosene sold from a blocked pump for nontaxable uses are...registered ultimate vendors (blocked pump) under § 48.6427-10...registered ultimate vendor (blocked pump). (c) Conditions...The claimant's registration number. (ii) The total...

  11. The ultimate band compression factor in gradient elution chromatography

    SciTech Connect

    Gritti, Fabrice [University of Tennessee, Knoxville (UTK); Guiochon, Georges A [ORNL

    2008-01-01

    The equations predicting the ultimate time band compression factor, G = (t{sub R}-t{sub F})/t{sub p} in linear gradient elution chromatography, for an infinitely narrow injection (injection time t{sub p} {yields} 0) were derived for an ideal-model column (dispersionless chromatography, H = 0) assuming the Linear Solvent Strength Model for the retention behavior of the analyte. Numerical solutions can readily be obtained when the LSSM model does not apply. The results can be generalized to any retained organic modifier (k'{sub A}) in the mobile phase. The stronger the retention of the organic modifier, the more effective the band compression. Dispersion in real chromatographic column (H {ne} 0) affects the limits that can be reached in linear gradients but poorly in step gradients. Examples based on a conventional HETP of about 12 {micro}m using a 5 {micro}m particle packed column reveal that the best time compression factor that could be expected is twice the one predicted with an ideal column.

  12. Launching GUPPI: the Green Bank Ultimate Pulsar Processing Instrument

    NASA Astrophysics Data System (ADS)

    DuPlain, Ron; Ransom, Scott; Demorest, Paul; Brandt, Patrick; Ford, John; Shelton, Amy L.

    2008-08-01

    The National Radio Astronomy Observatory (NRAO) is launching the Green Bank Ultimate Pulsar Processing Instrument (GUPPI), a prototype flexible digital signal processor designed for pulsar observations with the Robert C. Byrd Green Bank Telescope (GBT). GUPPI uses field programmable gate array (FPGA) hardware and design tools developed by the Center for Astronomy Signal Processing and Electronics Research (CASPER) at the University of California, Berkeley. The NRAO has been concurrently developing GUPPI software and hardware using minimal software resources. The software handles instrument monitor and control, data acquisition, and hardware interfacing. GUPPI is currently an expert-only spectrometer, but supports future integration with the full GBT production system. The NRAO was able to take advantage of the unique flexibility of the CASPER FPGA hardware platform, develop hardware and software in parallel, and build a suite of software tools for monitoring, controlling, and acquiring data with a new instrument over a short timeline of just a few months. The NRAO interacts regularly with CASPER and its users, and GUPPI stands as an example of what reconfigurable computing and open-source development can do for radio astronomy. GUPPI is modular for portability, and the NRAO provides the results of development as an open-source resource.

  13. Ultimate storage ring based on fourth-order geometric achromats

    NASA Astrophysics Data System (ADS)

    Cai, Yunhai; Bane, Karl; Hettel, Robert; Nosochkov, Yuri; Wang, Min-Huey; Borland, Michael

    2012-05-01

    We have designed an “ultimate” storage ring for a future light source that would be resided in the positron-electron-project (PEP) tunnel and achieves the diffraction-limited emittances (at 1.5 Å) of 12 pm-rad in both horizontal and vertical planes with a 4.5-GeV electron beam. These emittances include the contribution of intrabeam scattering at a nominal current of 200 mA in 3300 bunches. This quality beam in conjunction with a conventional 4-m undulator in a straight section can generate synchrotron radiation having a spectral brightness above 1022[photons/s/mm2/mrad2/0.1%BW] at a 10 keV photon energy. The high coherence at the diffraction limit makes this design competitive with 4th generation light sources based on an energy recovery linac. In addition, the beam lifetime is several hours and the dynamic aperture is large enough to allow off-axis injection. The alignment and stability tolerances, though challenging, are achievable. A ring with all these properties is only possible because of several major advances in mitigating the effects of nonlinear resonances.

  14. Ultimate VHF Broadband Interferometer Zen KAWASAKI and Manabu AKITA

    NASA Astrophysics Data System (ADS)

    Kawasaki, Z.; Akita, M.

    2013-12-01

    Lightning Research Group of Osaka University (LRGOU) has been developing an interferometer for thunderstorm monitoring during these two decades. When LRGOU initiated this project, many related scientists claimed that LRGOU's system was a time of arrival and it must be a sophisticated TOA system. However the key technology of the system were broad band and digital data processing, and it is named the VHF broad band digital interferometer (BDITF), because the phase difference of Fourier components played the very important role. Then the BDITF finally has been realized as a quasi-real time lightning monitoring system, and LRGOU has been operating their BDITFs around Osaka area. Since the BDITF captures the VHF impulses associated with lightning discharges by amplitude triggering, it occasionally misses one of the bi-directional leader progressions because of relatively small amplitude VHF impulses mainly emitted by positive leader tips. All of high density of VHF pulses associated with recoil leaders may not be recorded. Then the ordinary BDITF is able to be accepted as the practical operational system, but from the aspect of science it has been sioriously expected to be improved its performance. To overcome the difficulty New Mexico Institute of Mining and Technology (NMIMT) and LRGOU have started the joint project, and a continuous recording system for digital signals is adopted [M. Stock et al, and M Akita et al,]. The field campaigns have been conducting in New Mexico and in Japan, and successful observations are accomplished. The algorithm to identify individual VHF pulses associated with lightning discharges from back ground noise and/or artificial noise, the dispersion of phase differences for all Fourier components is examined. In case by of small dispersion it is concluded that analyzed VHF pulse has high possibility to be emitted by lightning discharges. This interpretation means that the recorded VHF pulse shape might maintain without deformation during propagation, like electromagnetic wave propagation in non-dispersive medium. This procedure presented exciting results of lightning channel imaging, and the bi-directional leader propagation can be visualized in terms of azimuth and elevation as a function of time. Moreover all of the VHF radiation process for an entire lightning flash from initiation to termination can be imaged, and it is concluded that the system might be an ultimate broad band digital interferometer. The authors would like to show their appreciation to Paul Krehbiel, NMIMT, who gave a chance and suggestion of a continuous recording scheme for BDITF. M. Stock et al. : Continuous Broadband Digital Interferometry of Lightning using a Generalized Cross Correlation Algorithm M. Akita et al. : Data Processing Procedure 1 using Distribution of Slopes of Phase Differences for Broadband VHF Interferometer

  15. BOOK REVIEW: Seeking Ultimates. An Intuitive Guide to Physics

    NASA Astrophysics Data System (ADS)

    Brown, Neil

    2000-05-01

    Physics has the reputation of being a difficult and dry subject. Many books have been written in attempts to show that the difficulties are not insurmountable, even for the layman, and to convey some of the fascination it provides for those within it. In Seeking Ultimates Peter Landsberg avoids mathematics, the source of so many difficulties, entirely, and seeks to make physics comprehensible by what he terms intuition. He also emphasizes that there is almost no part of science that is completely understood; there are always areas of incompleteness and uncertainty, capable of providing exciting new results, and examples of this are highlighted throughout the book. After an introduction Landsberg starts with macroscopic phenomena for ease of understanding, though one might question whether the chosen topic of thermodynamics is ever going to be easy. Next he looks at microscopic effects, from atomic structure to the fundamental particles of the standard model and their interactions. There follow chapters on time and entropy, on chaos theory, on quantum mechanics and then cosmology. The final chapters look at physical constants (including the anthropic principle), whether physics has room for a creator God (the conclusion is that this is not the province of science), and some thoughts on science as a human activity. The chosen topics are those which have been important in the late twentieth century and remain important. Each chapter cites an eminent scientist as a `hero', though little is made of this. There are occasional historical notes, set in boxes, and a few short poems to leaven the text. What the book achieves is difficult to assess. Removing mathematics and adding a glossary of technical terms do not necessarily allow non-scientists to enjoy the text, as the publisher's note on the back cover suggests. The concepts can baffle the layman even more than the mathematics, and one of the most difficult of all physical concepts permeates so much of this book: entropy. It is physicists who can benefit most from discarding mathematics and seeking intuitive understanding. It is often too easy to put the numbers into a formula, with little real comprehension of the underlying physics. For layman or physicist the book is hard work. It is not a volume to be read from cover to cover; each section needs to be considered and digested, with frequent turning backwards (or sometimes forwards) to other pages. Even then the outcome may leave questions that can only be answered by access to an academic library to look up some of the copious references to original papers (which, of course, do not eschew mathematics or make concessions to conceptual difficulties). Unfortunately the book is marred by an impression of haste and lack of care, leading to errors that should not have reached the final print. For example, a graph of increase of population with generation number is shown as and stated to be a straight line. It should be exponential. This sort of thing undermines confidence in the whole text. High temperature superconductivity may have a revolutionary effect on electrical machines in the future, but for the time being magnets for magnetic resonance imaging machines and the like still use the old superconductors. Amusing anecdotes make for interesting reading, but the one about Faraday is garbled: he had nothing to do with frogs' legs (that was Galvani), and the quip about taxing electricity one day, if not apocryphal, was made either to Peel or to Gladstone, not to the King. In at least one case a topic mentioned in the index and glossary does not appear on the stated page in the text, apparently having been cut out at a late stage. Personally I did not find the book satisfying, but others will differ. Especially when dealing with intuitive appreciation, what is straightforward to one person may be utterly opaque to another. Making physics comprehensible and conveying its fascination is a daunting and often thankless task, but a very necessary one. The more it is attempted by those with a command of the subject, the more likely i

  16. Effect of load eccentricity and substructure deformation on ultimate strength of shuttle orbiter thermal protection system

    NASA Technical Reports Server (NTRS)

    Sawyer, J. W.

    1981-01-01

    The effect of load eccentricity and substructure deformation on the ultimate strength and stress displacement properties of the shuttle orbiter thermal protection system (TPS) was determined. The LI-900 Reusable Surface Insulation (RSI) tiles mounted on the .41 cm thick Strain Isolator Pad (SIP) were investigated. Substructure deformations reduce the ultimate strength of the SIP/tile TPS and increase the scatter in the ultimate strength data. Substructure deformations that occur unsymmetric to the tile can cause the tile to rotate when subjected to a uniform applied load. Load eccentricity reduces SIP/tile TPS ultimate strength and causes tile rotation.

  17. pH Calculation

    NSDL National Science Digital Library

    Johansson, Stig

    This pair of pH calculation programs serves as an excellent tool for anyone wishing to calculate the pH of a solution containing multiple acids and bases. These programs allow practitioners to predict the pH of simple and complex acid/base solutions and buffers. They may be downloaded free of charge via the website. Users are encouraged to carefully read the guides provided by the author.

  18. Temperature dependent elastic constants and ultimate strength of graphene and graphyne

    E-print Network

    Melnik, Roderick

    Temperature dependent elastic constants and ultimate strength of graphene and graphyne Tianjiao JOURNAL OF CHEMICAL PHYSICS 137, 194901 (2012) Temperature dependent elastic constants and ultimate strength of graphene and graphyne Tianjiao Shao,1,2 Bin Wen,1,a) Roderick Melnik,3,4 Shan Yao,2 Yoshiyuki

  19. Experimental study on ultimate bearing capacity of perfobond rib shear connectors

    Microsoft Academic Search

    Zhenhai Wang; Qiao Li; Canhui Zhao

    2011-01-01

    This paper describes the influencing factors of the ultimate bearing capacity of perfobond rib shear connectors. Three types of failure modes for perfobond rib shear connectors with perforated rebar are summarized from previous experiments, and the shear failure of perforated rebar completely contributes to the ultimate bearing capacity. 33 specimens of perfobond rib shear connectors were tested in the static

  20. November 15, 2012 Alison North Ph.D., RU "The Confocal Strikes Back: Resonant scanners and gated detectors battle the STORM-troopers and

    E-print Network

    Papavasiliou, F. Nina

    detectors battle the STORM-troopers and SIM lords for ultimate popularity in the BIRC" December 6, 2012 to Protein Crystals: Introduction and Evaluation" March 14, 2013 Connie Zhao Ph.D., RU "Genomics Resource

  1. Ultimate energy

    SciTech Connect

    NONE

    1994-12-31

    An explanation is given of the complexity faced by the scientific researcher in an effort to achieve fusion power. Outlines the theory and current experiments being pursued in this complex project, including visits to five major fusion research laboratories, and interviews with physicists.

  2. Ultimate capacity of suction caisson in normally and lightly overconsolidated clays

    E-print Network

    Sharma, Partha Pratim

    2005-08-29

    is to numerically predict the ultimate capacity of suction caissons in normally consolidated and lightly overconsolidated clays. Representative soil profile from the Gulf of Mexico and the North Sea are taken and analyzed for suction caissons with length over...

  3. METHODS/MATERIALS MATRIX OF ULTIMATE DISPOSAL TECHNIQUES FOR SPILLED HAZARDOUS MATERIALS

    EPA Science Inventory

    A study was undertaken to evaluate conventional and novel methods for the ultimate disposal of spilled or released hazardous substances. Disposal methods studied include incineration, pyrolysis, landfilling, fixation, biological treatment, and chemical treatment. Applications of ...

  4. Age effects in L2 acquisition: ultimate attainment at the syntax-morphology interface 

    E-print Network

    Komar, Paulina

    2010-11-24

    This paper presents a selective overview of studies that have examined age effects in second language (L2) acquisition. The focus was on adult second language learners and the L2 ultimate attainment at syntax-interface morphology, with particular...

  5. METHYLATED ASIII COMPOUNDS AS POTENTIAL PROXIMATE/ULTIMATE GENOTOXIC METABOLITES OF INORGANIC ARSENIC

    EPA Science Inventory

    METHYLATED Asm COMPOUNDS AS POTENTIAL PROXIMATE/ULTIMATE GENOTOXIC METABOLITES OF INORGANIC ARSENIC. The methylation of inorganic arsenic has typically been viewed as a detoxification process. Genotoxicity tests have generally shown that arsenite has greater mutagenic p...

  6. 7 CFR 4280.21 - Eligible REDG Ultimate Recipients and Projects.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ...employment; and (ii) are open to and serve all Rural residents, and are owned by the Ultimate Recipient; (2) Business Incubators; (3) Facilities and equipment to provide education and training to residents of Rural Areas that will facilitate...

  7. 7 CFR 4280.21 - Eligible REDG Ultimate Recipients and Projects.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ...employment; and (ii) are open to and serve all Rural residents, and are owned by the Ultimate Recipient; (2) Business Incubators; (3) Facilities and equipment to provide education and training to residents of Rural Areas that will facilitate...

  8. 7 CFR 4280.21 - Eligible REDG Ultimate Recipients and Projects.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ...employment; and (ii) are open to and serve all Rural residents, and are owned by the Ultimate Recipient; (2) Business Incubators; (3) Facilities and equipment to provide education and training to residents of Rural Areas that will facilitate...

  9. 7 CFR 4280.21 - Eligible REDG Ultimate Recipients and Projects.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ...employment; and (ii) are open to and serve all Rural residents, and are owned by the Ultimate Recipient; (2) Business Incubators; (3) Facilities and equipment to provide education and training to residents of Rural Areas that will facilitate...

  10. 7 CFR 4280.15 - Ultimate Recipient Projects eligible for Rural Economic Development Loan funding.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ...Ultimate Recipient and Project that have an immediate...development or job creation Projects in a Rural Area. Funds...assistance: (a) Start-Up Venture costs...estate, buildings (new or existing), equipment...Assistance; (e) Project feasibility...

  11. 26 CFR 48.6427-10 - Kerosene; claims by registered ultimate vendors (blocked pumps).

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...kerosene from a blocked pump that does...buyer, and the number of gallons sold...ultimate vendor (blocked pump) registration number. (2) The total...kerosene from a blocked pump that does...buyer, and the number of gallons...

  12. 26 CFR 48.6427-10 - Kerosene; claims by registered ultimate vendors (blocked pumps).

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...kerosene from a blocked pump that does...buyer, and the number of gallons sold...ultimate vendor (blocked pump) registration number. (2) The total...kerosene from a blocked pump that does...buyer, and the number of gallons...

  13. 26 CFR 48.6427-10 - Kerosene; claims by registered ultimate vendors (blocked pumps).

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...kerosene from a blocked pump that does...buyer, and the number of gallons sold...ultimate vendor (blocked pump) registration number. (2) The total...kerosene from a blocked pump that does...buyer, and the number of gallons...

  14. 26 CFR 48.6427-10 - Kerosene; claims by registered ultimate vendors (blocked pumps).

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...kerosene from a blocked pump that does...buyer, and the number of gallons sold...ultimate vendor (blocked pump) registration number. (2) The total...kerosene from a blocked pump that does...buyer, and the number of gallons...

  15. Effects of fracturing fluid recovery upon well performance and ultimate recovery of hydraulically fractured gas wells

    E-print Network

    Berthelot, Jan Marie

    1990-01-01

    EFFECTS OF FRACTURING FLUID RECOVERY UPON WELL PERFORMANCE AND ULTIMATE RECOVERY OF HYDRAULICALLY FRACTURED GAS WELLS A Thesis IAN MARIE BERTHELOT Submitted to the Office of Graduate Studies of Texas AdtM University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE May 1990 Major Subject: Petroleum Engineering EFFECTS OF FRACTURING FLUID RECOVERY UPON WELL PERFORMANCE AND ULTIMATE RECOVERY OF HYDRAULICALLY FRACTURED GAS WELLS by JAN MARIE BERTIIELOT Appmved...

  16. A parametric study on ultimate strength of single shear bolted connections with curling

    Microsoft Academic Search

    T. S. Kim; H. Kuwamura; T. J. Cho

    2008-01-01

    Recommended procedures of finite element modeling for predicting the structural behaviors of single shear bolted connections in cold-formed austenitic stainless steel are presented in this paper. It was shown that predictions by FE analysis method were in a good correspondence with test results for ultimate behaviors such as failure mode, ultimate strength and out-of-plane curling. A parametric study on four-bolted

  17. Study on Ultimate Bearing Capacity of Two-Layered Subsoil Under Horizontal and Vertical Loading

    Microsoft Academic Search

    Qiyi Zhang; Maotian Luan

    To calculate the ultimate bearing capacity of shallow strip footings under horizontal and vertical loading on inhomogeneous\\u000a soil foundation is very valuable and significant. Based on the limit equilibrium theory of soil, the ultimate bearing capacity\\u000a of two-layered undrained soil foundation and the failure envelope under horizontal and vertical loading are achieved by using\\u000a the general-purpose FEM analysis package ABAQUS.

  18. Effects of reservoir geometry and permeability anisotropy on ultimate gas recovery in Devonian Shale reservoirs

    E-print Network

    Starnes, Lee McKennon

    1989-01-01

    EFFECTS OF RESERVOIR GEOMETRY AND PERMEABILITY ANISOTROPY ON ULTIMATE GAS RECOVERY IN DEVONIAN SHALE RESERVOIRS A Thesis by LEE McKENNON STARNES Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE August 1989 Major Subject: Petroleum Engineering EFFECI'S OF RESERVOIR GEOMETRY AND PERMEABILITY ANISOTROPY ON ULTIMATE GAS RECOVERY IN DEVONIAN SHALE RESERVOIRS A Thesis LEE McKENNON STARNES Approved...

  19. Amplitude distribution modelling and ultimate strength prediction of ASTM D-3039 graphite/epoxy tensile specimens

    NASA Astrophysics Data System (ADS)

    Walker, James L., II; Hill, Eric V. K.

    As the aerospace industry increases its usage of composite materials in primary structures, techniques must be developed to nondestructively predict and monitor structural integrity at low proof stresses. This paper demonstrates the feasibility of predicting ultimate strengths at stress levels less than 25 percent of the expected ultimate strength, thereby reducing the unintentional structural damage caused by higher proof loads. The research presented herein has shown that an ultimate strength prediction equation can be generated for ASTM D-3039 unidirectional graphite/epoxy tensile specimens. From an original sample set of six specimens, a multivariate statistical analysis was used to generate an ultimate strength prediction equation. The variables of the multivariate statistical analysis were obtained through the mathematical modelling of the low amplitude (matrix cracking) portion of the specimens' AE amplitude distributions produced during the early stages of proof testing. A Weibull distribution was used to represent the amplitude band, and its parameters were correlated with known failure strengths to produce ultimate strength prediction equations. Ultimate strengths were then accurately predicted at proof stresses less than 25 percent of the expected failure stress for several randomly drawn tensile coupons.

  20. Combined wind turbine fatigue and ultimate load reduction by individual blade control

    NASA Astrophysics Data System (ADS)

    Han, Y.; Leithead, W. E.

    2014-06-01

    If each blade of the wind turbine has individual pitch actuator, there is possibility of employing the pitch system to mitigate structural loads through advanced control methods. Previously, considerable reduction of blade lifetime equivalent fatigue loads has been achieved by Individual Blade Control (IBC) and in addition, it has also been shown the potential in blade ultimate loads reduction. However, both fatigue and ultimate loads impact on the design and life of wind turbine blades. In this paper, the design and application of IBC that concurrently reduce both blade fatigue and ultimate loads is investigated. The contributions of blade load spectral components, which are 1P, 2P and edgewise mode from blade in-plane and/or out-of-plane bending moments, are firstly explored. Four different control options for reducing various combinations of these load components are compared. In response to the different spectral peaks of both fatigue and ultimate loads, the controller has been designed so that it can act on different frequency components which vary with wind speed. The performance of the IBC controller on fatigue and ultimate load reduction is assessed by simulating a 5MW exemplar wind turbine. Simulation results show that with a proper selection of controlling inputs at different wind speed, the use of a single combined IBC can achieve satisfactory reduction on both fatigue and ultimate loads.

  1. 26 CFR 48.6421-1 - Credits or payments to ultimate purchaser of gasoline used for certain nonhighway purposes.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...payments to ultimate purchaser of gasoline used for certain nonhighway purposes...payments to ultimate purchaser of gasoline used for certain nonhighway purposes. (a) In general. (1) If gasoline is used in a qualified...

  2. 26 CFR 48.6421-1 - Credits or payments to ultimate purchaser of gasoline used for certain nonhighway purposes.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...payments to ultimate purchaser of gasoline used for certain nonhighway purposes...payments to ultimate purchaser of gasoline used for certain nonhighway purposes. (a) In general. (1) If gasoline is used in a qualified...

  3. 26 CFR 48.6421-1 - Credits or payments to ultimate purchaser of gasoline used for certain nonhighway purposes.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...payments to ultimate purchaser of gasoline used for certain nonhighway purposes...payments to ultimate purchaser of gasoline used for certain nonhighway purposes. (a) In general. (1) If gasoline is used in a qualified...

  4. 26 CFR 48.6421-1 - Credits or payments to ultimate purchaser of gasoline used for certain nonhighway purposes.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...payments to ultimate purchaser of gasoline used for certain nonhighway purposes...payments to ultimate purchaser of gasoline used for certain nonhighway purposes. (a) In general. (1) If gasoline is used in a qualified...

  5. Ultimate pier and contraction scour prediction in cohesive soils at selected bridges in Illinois

    USGS Publications Warehouse

    Straub, Timothy D.; Over, Thomas M.; Domanski, Marian M.

    2013-01-01

    The Scour Rate In COhesive Soils-Erosion Function Apparatus (SRICOS-EFA) method includes an ultimate scour prediction that is the equilibrium maximum pier and contraction scour of cohesive soils over time. The purpose of this report is to present the results of testing the ultimate pier and contraction scour methods for cohesive soils on 30 bridge sites in Illinois. Comparison of the ultimate cohesive and noncohesive methods, along with the Illinois Department of Transportation (IDOT) cohesive soil reduction-factor method and measured scour are presented. Also, results of the comparison of historic IDOT laboratory and field values of unconfined compressive strength of soils (Qu) are presented. The unconfined compressive strength is used in both ultimate cohesive and reduction-factor methods, and knowing how the values from field methods compare to the laboratory methods is critical to the informed application of the methods. On average, the non-cohesive method results predict the highest amount of scour, followed by the reduction-factor method results; and the ultimate cohesive method results predict the lowest amount of scour. The 100-year scour predicted for the ultimate cohesive, noncohesive, and reduction-factor methods for each bridge site and soil are always larger than observed scour in this study, except 12% of predicted values that are all within 0.4 ft of the observed scour. The ultimate cohesive scour prediction is smaller than the non-cohesive scour prediction method for 78% of bridge sites and soils. Seventy-six percent of the ultimate cohesive predictions show a 45% or greater reduction from the non-cohesive predictions that are over 10 ft. Comparing the ultimate cohesive and reduction-factor 100-year scour predictions methods for each bridge site and soil, the scour predicted by the ultimate cohesive scour prediction method is less than the reduction-factor 100-year scour prediction method for 51% of bridge sites and soils. Critical shear stress remains a needed parameter in the ultimate scour prediction for cohesive soils. The unconfined soil compressive strength measured by IDOT in the laboratory was found to provide a good prediction of critical shear stress, as measured by using the erosion function apparatus in a previous study. Because laboratory Qu analyses are time-consuming and expensive, the ability of field-measured Rimac data to estimate unconfined soil strength in the critical shear–soil strength relation was tested. A regression analysis was completed using a historic IDOT dataset containing 366 data pairs of laboratory Qu and field Rimac measurements from common sites with cohesive soils. The resulting equations provide a point prediction of Qu, given any Rimac value with the 90% confidence interval. The prediction equations are not significantly different from the identity Qu = Rimac. The alternative predictions of ultimate cohesive scour presented in this study assume Qu will be estimated using Rimac measurements that include computed uncertainty. In particular, the ultimate cohesive predicted scour is greater than observed scour for the entire 90% confidence interval range for predicting Qu at the bridges and soils used in this study, with the exception of the six predicted values that are all within 0.6 ft of the observed scour.

  6. Calculation of the Ultimate Bearing Capacity of Soil Slope Based on the Unified Strength Theory

    NASA Astrophysics Data System (ADS)

    Liao, Hongjian; Ma, Zongyuan; Su, Lijun

    At present, the failure criteria used in calculating the ultimate bearing capacity of soil slope are the Tresca and Mohr-Coulomb criteria. But the results are conservative and the potential strength of soil mass cannot be utilized sufficiently because these two criteria do not take into account the effect of the intermediate principal stress. In this paper the unified strength theory was used to analyze the ultimate bearing capacity of soil slope. The formula for calculating the ultimate bearing capacity of soil slope using the unified strength theory was established. At the end, a case history was analyzed and it indicated that the result of the unified strength theory is larger than that of the Mohr-Coulomb criterion. This indicates that calculation of ultimate bearing capacity of soil slope with the unified strength theory can sufficiently exploit the strength of material. Therefore, the calculation of ultimate bearing capacity of the soil slope based on the unified strength theory will be of great significance in future applications.

  7. The Ultimate Factor of Safety for Aircraft and Spacecraft Its History, Applications and Misconceptions

    NASA Technical Reports Server (NTRS)

    Zipay, John J.; Modlin, C. Thomas, Jr.; Larsen, Curtis E.

    2016-01-01

    The ultimate factor of safety (FOSULT) concept used in aircraft and spacecraft has evolved over many decades. Currently an FOSULT 1.5 is the FAR-mandated value for aircraft while an FOSULT of 1.4 has been used in various spacecraft. This paper was motivated by the desire to concisely explain the origins, proper interpretation and application of the ultimate factor of safety concept, since the authors have seen throughout their careers many misconceptions and incorrect applications of this concept. The history of the ultimate factor of safety concept is briefly summarized, the proper application of the factor of safety in aircraft design, structural analysis and operations is covered in detail, examples of limit load exceedance in aircraft and spacecraft are discussed, the evolution of the 1.4 FOSULT for spacecraft is described and some misconceptions regarding the ultimate factor of safety concept are addressed. It is hoped that this paper can be a summary resource for engineers to understand the origin, purpose and proper application of the ultimate factor of safety.

  8. The pH Game

    NSDL National Science Digital Library

    This learning activity engages students in measurement of pH in water and soil samples, plants and other natural materials. By mixing different substances, they observe how pH changes, and become familiar with the pH of common household products. Through discussion, they learn how pH can be modified in the environment.

  9. pH Scale

    NSDL National Science Digital Library

    Wendy Adams

    2011-01-01

    In this online interactive simulation, learners will test the pH of liquids like coffee, spit, and soap to determine whether each is acidic, basic, or neutral. Learners will visualize the relative number of hydroxide ions and hydronium ions in a solution, and they can switch between logarithmic and linear scales. Learners will also investigate whether changing the volume or diluting with water affects the pH. They can experiment by designing their own liquids! This activity includes an online simulation, sample learning goals, a teacher's guide, and translations in over 30 languages.

  10. 02/03/2011 09:46The Last Word On Ultimate Explanations? | Evolutionary Psychology Blog Page 1 of 7http://www.epjournal.net/blog/2011/02/the-last-word-on-ultimate...1+Newsletter&utm_term=The+Last+Word+On+Ultimate+Explanations_3F

    E-print Network

    West, Stuart

    -Phillips et al. use the example of crying infants in the article ­ babies cry (ultimately) to signal needs in trying to explain ­ in the ultimate sense ­ cooperation among humans. Why do people have systems designed

  11. arXiv:astro-ph/0009259v219Sep2000 How the Sun Shines

    E-print Network

    Walter, Frederick M.

    arXiv:astro-ph/0009259v219Sep2000 How the Sun Shines John N. Bahcall What makes the sun shine? How does the sun produce the vast amount of energy necessary to support life on earth? These questions 1833 Treatise on Astronomy: The sun's rays are the ultimate source of almost every motion which takes

  12. Revisiting perceptions of quality of hospice care: managing for the ultimate referral.

    PubMed

    Churchman, Richard; York, Grady S; Woodard, Beth; Wainright, Charles; Rau-Foster, Mary

    2014-08-01

    Hospice services provided in the final months of life are delivered through complex interpersonal relationships between caregivers, patients, and families. Often, service value and quality are defined by these interpersonal interactions. This understanding provides hospice leaders with an enormous opportunity to create processes that provide the optimal level of care during the last months of life. The authors argue that the ultimate referral is attained when a family member observes the care of a loved one, and the family member conveys a desire to receive the same quality of services their loved one received at that facility. The point of this article is to provide evidence that supports the methods to ultimately enhance the patient's and family's experience and increase the potential for the ultimate referral. PMID:23928074

  13. Intra-Beam Scattering, Impedance, and Instabilities in Ultimate Storage Rings

    SciTech Connect

    Bane, Karl; /SLAC

    2012-03-28

    We have investigated collective effects in an ultimate storage ring, i.e. one with diffraction limited emittances in both planes, using PEP-X as an example. In an ultimate ring intra-beam scattering (IBS) sets the limit of current that can be stored. In PEP-X, a 4.5 GeV ring running round beams at 200 mA in 3300 bunches, IBS doubles the emittances to 11.5 pm at the design current. The Touschek lifetime is 11 hours. Impedance driven collective effects tend not to be important since the beam current is relatively low. We have investigated collective effects in PEP-X, an ultimate storage ring, i.e. one with diffraction limited emittances (at one angstrom wavelength) in both planes. In an ultimate ring intra-beam scattering (IBS) sets the limit of current that can be stored. In PEP-X, IBS doubles the emittances to 11.5 pm at the design current of 200 mA, assuming round beams. The Touschek lifetime is quite large in PEP-X, 11.6 hours, and - near the operating point - increases with decreasing emittance. It is, however, a very sensitive function of momentum acceptance. In an ultimate ring like PEP-X impedance driven collective effects tend not to be important since the beam current is relatively low. Before ultimate PEP-X can be realized, the question of how to run a machine with round beams needs serious study. For example, in this report we assumed that the vertical emittance is coupling dominated. It may turn out that using vertical dispersion is a preferable way to generate round beams. The choice will affect IBS and the Touschek effect.

  14. Space simulation ultimate pressure lowered two decades by removal of diffusion pump oil contaminants during operation

    NASA Technical Reports Server (NTRS)

    Buggele, A. E.

    1973-01-01

    The complex problem why large space simulation chambers do not realize the true ultimate vacuum was investigated. Some contaminating factors affecting diffusion pump performance have been identified and some advances in vacuum/distillation/fractionation technology have been achieved which resulted in a two decade or more lower ultimate pressure. Data are presented to show the overall or individual contaminating effect of commonly used phthalate ester plasticizers of 390 to 530 molecular weight on diffusion pump performance. Methods for removing contaminants from diffusion pump silicone oil during operation and reclaiming contaminated oil by high vacuum molecular distillation are described.

  15. pH optrode

    DOEpatents

    Northrup, M. Allen (Berkeley, CA); Langry, Kevin C. (Tracy, CA)

    1993-01-01

    A process is provided for forming a long-lasting, stable, pH-sensitive dye-acrylamide copolymer useful as a pH-sensitive material for use in an optrode or other device sensitive to pH. An optrode may be made by mechanically attaching the copolymer to a sensing device such as an optical fiber.

  16. pH Basics

    ERIC Educational Resources Information Center

    Lunelli, Bruno; Scagnolari, Francesco

    2009-01-01

    The exposition of the pervasive concept of pH, of its foundations and implementation as a meaningful quantitative measurement, in nonspecialist university texts is often not easy to follow because too many of its theoretical and operative underpinnings are neglected. To help the inquiring student we provide a concise introduction to the depth just…

  17. Getting “Just Deserts” or Seeing the “Silver Lining”: The Relation between Judgments of Immanent and Ultimate Justice

    PubMed Central

    Harvey, Annelie J.; Callan, Mitchell J.

    2014-01-01

    People can perceive misfortunes as caused by previous bad deeds (immanent justice reasoning) or resulting in ultimate compensation (ultimate justice reasoning). Across two studies, we investigated the relation between these types of justice reasoning and identified the processes (perceptions of deservingness) that underlie them for both others (Study 1) and the self (Study 2). Study 1 demonstrated that observers engaged in more ultimate (vs. immanent) justice reasoning for a “good” victim and greater immanent (vs. ultimate) justice reasoning for a “bad” victim. In Study 2, participants' construals of their bad breaks varied as a function of their self-worth, with greater ultimate (immanent) justice reasoning for participants with higher (lower) self-esteem. Across both studies, perceived deservingness of bad breaks or perceived deservingness of ultimate compensation mediated immanent and ultimate justice reasoning respectively. PMID:25036011

  18. Liquid Crystal Polymer (LCP): The Ultimate Solution for Low-Cost RF Flexible Electronics and Antennas

    E-print Network

    Tentzeris, Manos

    Liquid Crystal Polymer (LCP): The Ultimate Solution for Low- Cost RF Flexible Electronics electrical properties of the organic substrate Liquid Crystal Polymer (LCP) has been presented. Three antenna have been designed and fabricated on LCP. Test results of all 3 of the structures show good

  19. Ultimate pressure capacity analysis of a post-tensioned reinforced concrete nuclear reactor containment building

    Microsoft Academic Search

    W. T. Dooley; R. W. Macek; S. Sadik

    1983-01-01

    This paper presents a three dimensional nonlinear structural analysis of a post-tensioned reinforced concrete nuclear reactor containment building. The objective of the analysis was to develop and demonstrate modeling techniques appropriate for determining the global ultimate internal pressure capacity of this type of containment. The structural model developed for the ADINA computer code employed nonlinear material models with truss, shell

  20. The Ultimate Flag Games Curriculum: An Answer to a Participation Problem

    ERIC Educational Resources Information Center

    Bell, Martie

    2011-01-01

    In response to a lack of active participation by students in physical education, the Ultimate Flag Games curriculum was created and has thrived in the decades since its inception. The curriculum has been successful at the middle school, high school, and higher education levels. This article introduced the curriculum, different games, and rules and…

  1. Quantum Computation--The Ultimate Frontier Chris Adami and Jonathan P. Dowling

    E-print Network

    Dowling, Jonathan P.

    Quantum Computation--The Ultimate Frontier Chris Adami and Jonathan P. Dowling Quantum Computing The discovery of an algorithm for factoring which runs in polynomial time on a quantum computer has given rise to a concerted effort to understand the principles, advantages, and limitations of quantum computing. At the same

  2. Student's Ultimate Career Coursework, Employment, & Student Services Handbook. "SUCCESS Handbook" Final Report.

    ERIC Educational Resources Information Center

    Foothill-De Anza Community Coll. District, Cupertino, CA. Occupational Training Inst.

    The Student's Ultimate Career Coursework, Employment and Student Services (SUCCESS) Handbook project was undertaken to identify student support services available through the California Community Colleges (CCC), increase student retention among special needs vocational education students, and identify common barriers to employment. The project…

  3. Items Containing Peanuts & Other Nuts Note: Each of us must ultimately be responsible

    E-print Network

    Shyy, Wei

    Items Containing Peanuts & Other Nuts Note: Each of us must ultimately be responsible for what we inthe itemwasprocessedina factorythat makesnutproducts Peanuts/PeanutButter Acorn Squashw/Peanut Splitsw/Nuts* Broccoli and TofuwithPeanutSauce Café Mocha Cake* CajunPeanutRice Chicken

  4. L2 and L3 Ultimate Attainment: An Investigation of Two Parameters

    ERIC Educational Resources Information Center

    Hermas, Abdelkader

    2014-01-01

    This study considers the upper limit of ultimate attainment in the L2 French and L3 English of trilingual learners. The learners are native speakers of Moroccan Arabic who started learning L2 French at eight and L3 English at 16. They are advanced in both languages. Four constructions representing the verb movement and null subject parameter were…

  5. Prediction of Local Ultimate Strain and Toughness of Trabecular Bone Tissue by Raman Material Composition Analysis

    PubMed Central

    Stüssi, Edgar; Müller, Ralph

    2015-01-01

    Clinical studies indicate that bone mineral density correlates with fracture risk at the population level but does not correlate with individual fracture risk well. Current research aims to better understand the failure mechanism of bone and to identify key determinants of bone quality, thus improving fracture risk prediction. To get a better understanding of bone strength, it is important to analyze tissue-level properties not influenced by macro- or microarchitectural factors. The aim of this pilot study was to identify whether and to what extent material properties are correlated with mechanical properties at the tissue level. The influence of macro- or microarchitectural factors was excluded by testing individual trabeculae. Previously reported data of mechanical parameters measured in single trabeculae under tension and bending and its compositional properties measured by Raman spectroscopy was evaluated. Linear and multivariate regressions show that bone matrix quality but not quantity was significantly and independently correlated with the tissue-level ultimate strain and postyield work (r = 0.65–0.94). Principal component analysis extracted three independent components explaining 86% of the total variance, representing elastic, yield, and ultimate components according to the included mechanical parameters. Some matrix parameters were both included in the ultimate component, indicating that the variation in ultimate strain and postyield work could be largely explained by Raman-derived compositional parameters. PMID:25695083

  6. Measurements of near-ultimate strength for multiwalled carbon nanotubes and

    E-print Network

    Espinosa, Horacio D.

    Measurements of near-ultimate strength for multiwalled carbon nanotubes and irradiation and inadequate measurements. Here we report multiwalled carbon nanotubes with a mean fracture strength >100 GPa chemical treatments from the sample preparation process, thus avoiding the formation of defects. High

  7. bleaching may ultimately help reef corals to survive the recurrent and increasingly

    E-print Network

    Pretoria, University of

    bleaching may ultimately help reef corals to survive the recurrent and increasingly severe warming events projected by current climate models of the next half-century3 . Bleaching is an ecological gamble in that it sacrifices short-term benefits for long-term advantage. This counters conventional wisdom that bleaching

  8. Prediction of local ultimate strain and toughness of trabecular bone tissue by Raman material composition analysis.

    PubMed

    Carretta, Roberto; Stüssi, Edgar; Müller, Ralph; Lorenzetti, Silvio

    2015-01-01

    Clinical studies indicate that bone mineral density correlates with fracture risk at the population level but does not correlate with individual fracture risk well. Current research aims to better understand the failure mechanism of bone and to identify key determinants of bone quality, thus improving fracture risk prediction. To get a better understanding of bone strength, it is important to analyze tissue-level properties not influenced by macro- or microarchitectural factors. The aim of this pilot study was to identify whether and to what extent material properties are correlated with mechanical properties at the tissue level. The influence of macro- or microarchitectural factors was excluded by testing individual trabeculae. Previously reported data of mechanical parameters measured in single trabeculae under tension and bending and its compositional properties measured by Raman spectroscopy was evaluated. Linear and multivariate regressions show that bone matrix quality but not quantity was significantly and independently correlated with the tissue-level ultimate strain and postyield work (r = 0.65-0.94). Principal component analysis extracted three independent components explaining 86% of the total variance, representing elastic, yield, and ultimate components according to the included mechanical parameters. Some matrix parameters were both included in the ultimate component, indicating that the variation in ultimate strain and postyield work could be largely explained by Raman-derived compositional parameters. PMID:25695083

  9. The Ultimate and Proximate Regulation of Developmental Polyphenism in Spadefoot Toads

    Microsoft Academic Search

    Brian L. Storz

    2008-01-01

    Understanding the ultimate and proximate mechanisms of spadefoot tadpole developmental polyphenism is the first step in gaining a mechanistic and evolutionary understanding of the factors responsible for the control and evolution of polyphenism and the connection between the environment, genotype, and phenotype. Tadpoles of the spadefoot toad Spea multiplicata and Spea bombifrons can display either a “typical” omnivorous phenotype or

  10. BNL NONLINEAR PRE TEST SEISMIC ANALYSIS FOR THE NUPEC ULTIMATE STRENGTH PIPING TEST PROGRAM

    Microsoft Academic Search

    G. DEGRASSI; C. HOFMAYER; C. MURPHY; K. SUZUKI; Y. NAMITA

    2003-01-01

    The Nuclear Power Engineering Corporation (NUPEC) of Japan has been conducting a multi-year research program to investigate the behavior of nuclear power plant piping systems under large seismic loads. The objectives of the program are: to develop a better understanding of the elasto-plastic response and ultimate strength of nuclear piping; to ascertain the seismic safety margin of current piping design

  11. Is this the ultimate in recycling. [Legislation in Germany requiring private industry packaging recycling

    Microsoft Academic Search

    1993-01-01

    In Germany, as in the US, packaging waste makes up a third of total municipal solid waste. The principle of polluter pays, or the internalizing of environmental costs by industry is being tested in Germany. Legislation, enacted on June 12, 1991, requires private industry to collect, sort, and ultimately recycle packaging waste including container to hold basic product, secondary packaging,

  12. A Recommendation by the Hubble Second Decade Committee: Toward the Ultimate

    E-print Network

    Sirianni, Marco

    TheHubbleD a ta Archive A Recommendation by the Hubble Second Decade Committee: Toward the Ultimate, Maryland December 2000 #12;The Hubble Archive 4 ntroduction The archive of data from Hubble is undoubtedly times the ingest rate of new data from the telescope. The archive is moving to the center of the Hubble

  13. Ultimate Use of Two-Photon Fluorescence Microscopy to Map Orientational Behavior of Fluorophores

    E-print Network

    Paris-Sud XI, Université de

    orientations in an ordered sample, whereas analyzing the fluorescence light polarization along a givenUltimate Use of Two-Photon Fluorescence Microscopy to Map Orientational Behavior of Fluorophores polarized-light excitation, its retrieval is limited to a small number of parameters. Because

  14. Finding Ultimate Limits of Performance for Hybrid Electric Edward D. Tate

    E-print Network

    00FTT-50 Finding Ultimate Limits of Performance for Hybrid Electric Vehicles Edward D. Tate Stephen. Hybrid electric vehicles are seen as a means to accomplish these goals. The majority of vehicles be improved. A series hybrid vehicle electrically couples the engine to the road. The propulsion system

  15. Journal of Statistical Physics, Vol. 90, Nos. 1/2, 1998 An Ultimate Frustration in Classical

    E-print Network

    Miekisz, Jacek

    Journal of Statistical Physics, Vol. 90, Nos. 1/2, 1998 An Ultimate Frustration in Classical is called frustrated if not all of its interactions can attain their minima simultaneously-invariant, frustrated interactions and with unique ground-state measures which are not unique ground-state measures

  16. 26 CFR 48.6427-8 - Diesel fuel and kerosene; claims by ultimate purchasers.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...to kerosene sold from a blocked pump are made by registered ultimate vendors (blocked pump) under § 48.6427-10...kerosene was not sold from a blocked pump or sold for blending...claim: (1) The total number of gallons. (2) A...

  17. 26 CFR 48.6427-8 - Diesel fuel and kerosene; claims by ultimate purchasers.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...to kerosene sold from a blocked pump are made by registered ultimate vendors (blocked pump) under § 48.6427-10...kerosene was not sold from a blocked pump or sold for blending...claim: (1) The total number of gallons. (2) A...

  18. 26 CFR 48.6427-8 - Diesel fuel and kerosene; claims by ultimate purchasers.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...to kerosene sold from a blocked pump are made by registered ultimate vendors (blocked pump) under § 48.6427-10...kerosene was not sold from a blocked pump or sold for blending...claim: (1) The total number of gallons. (2) A...

  19. 26 CFR 48.6427-8 - Diesel fuel and kerosene; claims by ultimate purchasers.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...to kerosene sold from a blocked pump are made by registered ultimate vendors (blocked pump) under § 48.6427-10...kerosene was not sold from a blocked pump or sold for blending...claim: (1) The total number of gallons. (2) A...

  20. he mobile world depends on lithium-ion batteries --today's ultimate

    E-print Network

    Napp, Nils

    T he mobile world depends on lithium- ion batteries -- today's ultimate rechargeable energy store is applied to reverse the electron flow, which also drives the lithium ions back. In a Li­S battery and the supplier of lithium ions: it shrinks as the battery runs, and reforms when the battery is recharged

  1. Effect of hydrogen on the yield strength and ultimate strength of iron differing in dispersity

    Microsoft Academic Search

    F. Po Yanchishin; N. Ya. Yaremchenko; M. M. Shved

    1975-01-01

    It was of interest to determine the effect of hydrogen on the yield strength and ultimate strength of Armco iron differing in dispersity in uniaxial tension. The tests were made on flat samples 3 mm wide, 12 mm long, and 0.8 mm thick, with different grain sizes. The grain sizes were varied by means of recrystallization annealing in vacuum at

  2. Predicting the ultimate axial load capacity of joints formed using V-band retainers

    NASA Astrophysics Data System (ADS)

    Muller, Matthias

    V-band retainers are widely used in the automotive, aircraft and aerospace industries to connect a pair of circular flanges to provide a joint with good axial strength and torsional rigidity. V-band retainers are manufactured using a cold roll forming process. Despite their wide application, once assembled to a pair of flanges little is known about the interaction between flange and band. Moreover the failure mode of V-band retainers when applying an axial load is not fully understood. In this thesis the ultimate axial load capacity of V-band retainers is predicted using finite element and theoretical models and validated using experimental testing. It was shown that the ultimate axial load capacity was strongly dependent on the joint diameter, increasing between 114mm and 235mm, and decreasing beyond that. Moreover, the peak in ultimate axial load capacity was dependent on parameters such as the axial clamping load and coefficient of friction, and its position lay between 235mm and 450mm, as predicted by the finite element models. Other geometrical parameters such as flange and band thickness showed large impacts on the ultimate axial load capacity as well.. A theoretical model was developed that allowed the ultimate axial load capacity to be calculated from a single formula for larger bands and using a simple algorithm for smaller bands. This model supported the findings that, depending on the band diameter, the ultimate axial load capacity had a peak, but predicted its position at approximately 181mm. This position at 181mm was validated by the experimental data. However, when compared to the tests, the finite element and theoretical models both over-predicted the ultimate axial load capacity. Both the finite element models and practical tests showed that for small V-bands axial failure is due to a combination of section deformation and ring expansion, whereas large V-bands fail due to ring expansion only. These two distinct types of behaviour were incorporated into the theoretical model. The hardness development throughout the cold roll forming process was predicted using finite element models. This was validated by hardness measurements, for which a new technique was generated, directly linking plastic strain and hardness values..

  3. Adjudicating pathological criminal incapacity within a climate of ultimate issue barriers: A comparative perspective.

    PubMed

    Stevens, Geert Philip

    2015-01-01

    Mental health experts are increasingly being utilised by the criminal justice system to provide assistance to courts during the assessment of issues falling beyond the knowledge and/or experience of the courts. A particular domain where the assistance of qualified psychiatrists and psychologists is becoming essential is where the defence of pathological criminal incapacity falls to be assessed. Mental health professionals testifying during trials where the defence of pathological criminal incapacity is raised will present opinion evidence which is one of the exceptions to the rule of inadmissibility of opinion evidence. Mental health professionals providing their opinion evidence are, however, prohibited from expressing opinions on so-called "ultimate issues" upon which only the court may ultimately rule upon. The latter rule is also commonly known in practice as the "ultimate issue" rule which presents multifaceted challenges in respect of the application of the defence of pathological criminal incapacity. In this article, the author assesses the application of the ultimate issue rule with reference to the defence of pathological criminal incapacity as it operates within the South African criminal law context. A comparative analysis is also provided with reference to the rule as it operates in the United States of America and more specifically Federal Rule 704. It is concluded that the ultimate issue rule unnecessarily restricts testimony provided by mental health professionals as such placing a barrier on such evidence. As such, it is argued that the rule is superfluous as it remains within the discretion of the trier of fact to decide as to what weight to attach to such evidence. PMID:25681851

  4. Formation of NDMA from ranitidine and sumatriptan: the role of pH.

    PubMed

    Shen, Ruqiao; Andrews, Susan A

    2013-02-01

    N-nitrosodimethylamine (NDMA) is an emerging disinfection by-product (DBP) which can be formed via the chloramination of amine-based precursors. The formation of NDMA is mainly determined by the speciation of chloramines and the precursor amine groups, both of which are highly dependent on pH. The impact of pH on NDMA formation has been studied for the model precursor dimethylamine (DMA) and natural organic matter (NOM), but little is known for amine-based pharmaceuticals which have been newly identified as a group of potential NDMA precursors, especially in waters impacted by treated wastewater effluents. This study investigates the role of pH in the formation of NDMA from two amine-based pharmaceuticals, ranitidine and sumatriptan, under drinking water relevant conditions. The results indicate that pH affects both the ultimate NDMA formation as well as the reaction kinetics. The maximum NDMA formation typically occurs in the pH range of 7-8. At lower pH, the reaction is limited due to the lack of non-protonated amines. At higher pH, although the initial reaction is enhanced by the increasing amount of non-protonated amines, the ultimate NDMA formation is limited because of the lack of dichloramine. PMID:23182669

  5. Exercise and Pulmonary Hypertension (PH)

    MedlinePLUS

    ... Young Adult Issues Dating and Relationships College and Scholarships Family Planning Considering Adoption with PH The Adoption ... Young Adult Issues Dating and Relationships College and Scholarships Family Planning Considering Adoption with PH The Adoption ...

  6. In Vitro Colonization of the Muscle Extracellular Matrix Components by Escherichia coli O157:H7: The Influence of Growth Medium, Temperature and pH on Initial Adhesion and Induction of Biofilm Formation by Collagens I and III

    PubMed Central

    Chagnot, Caroline; Agus, Allison; Renier, Sandra; Peyrin, Frédéric; Talon, Régine; Astruc, Thierry; Desvaux, Mickaël

    2013-01-01

    Enterohemorrhagic Escherichia coli (EHEC) O157:H7 are responsible for repeated food-poisoning cases often caused by contaminated burgers. EHEC infection is predominantly a pediatric illness, which can lead to life-threatening diseases. Ruminants are the main natural reservoir for EHEC and food contamination almost always originates from faecal contamination. In beef meat products, primary bacterial contamination occurs at the dehiding stage of slaughtering. The extracellular matrix (ECM) is the most exposed part of the skeletal muscles in beef carcasses. Investigating the adhesion to the main muscle fibrous ECM proteins, insoluble fibronectin, collagen I, III and IV, laminin-?2 and elastin, results demonstrated that the preceding growth conditions had a great influence on subsequent bacterial attachment. In the tested experimental conditions, maximal adhesion to fibril-forming collagens I or III occurred at 25°C and pH 7. Once initially adhered, exposure to lower temperatures, as applied to meat during cutting and storage, or acidification, as in the course of post-mortem physiological modifications of muscle, had no effect on detachment, except at pHu. In addition, dense biofilm formation occurred on immobilized collagen I or III and was induced in growth medium supplemented with collagen I in solution. From this first comprehensive investigation of EHEC adhesion to ECM proteins with respect to muscle biology and meat processing, new research directions for the development of innovative practices to minimize the risk of meat contamination are further discussed. PMID:23516631

  7. The pH scale

    NSDL National Science Digital Library

    Olivia Worland (Purdue University; Biological Sciences)

    2008-05-26

    Some animals tolerate broad changes in pH well while others do not. Human activities can create acid rain. Acid rain can change the pH of the environment and destroy entire ecosystems and habitats. For an ecosystem to function properly, its pH must be able to accommodate all of the organisms living in it.

  8. Urine pH test

    MedlinePLUS

    A urine pH test measures the level of acid in urine. ... pH - urine ... meat products or cranberries can decrease your urine pH. ... to check for changes in your body's acid levels.It may be done to ... more effective when urine is acidic or non-acidic (alkaline).

  9. Ultimate strength assessment of a tanker hull based on experimentally developed master curves

    NASA Astrophysics Data System (ADS)

    Xu, Mingcai; Garbatov, Y.; Guedes Soares, C.

    2013-06-01

    A geometrically similar scaling was made from small-scale specimen to full-scale stiffened panels and then their collapse behaviour is investigated. It is considered that the stiffened panel compressive ultimate strength test was designed according to geometrical scaling laws so that the output of the test could be used as representative of the stiffened panels of the compressive zone of a tanker hull subjected to vertical bending moment. The ultimate strength of a tanker hull is analysed by a FE analysis using the experimentally developed master stress-strain curves which are obtained by the beam tension test and the compressive test of the stiffened panel, and are then compared with the result achieved by the progressive collapse method.

  10. Ultimate sensitivity of precision measurements with Gaussian quantum light : a multi-modal approach

    E-print Network

    Olivier Pinel; Julien Fade; Daniel Braun; Pu Jian; Nicolas Treps; Claude Fabre

    2011-10-07

    Multimode Gaussian quantum light, which includes multimode squeezed and multipartite quadrature entangled light, is a very general and powerful quantum resource with promising applications in quantum information processing and metrology. In this paper, we determine the ultimate sensitivity in the estimation of any parameter when the information about this parameter is encoded in such light, irrespective of the information extraction protocol used in the estimation and of the measured observable. In addition we show that an appropriate homodyne detection scheme allows us to reach this ultimate sensitivity. We show that, for a given set of available quantum resources, the most economical way to maximize the sensitivity is to put the most squeezed state available in a well-de ned light mode. This implies that it is not possible to take advantage of the existence of squeezed fluctuations in other modes, nor of quantum correlations and entanglement between diff erent modes.

  11. Stapledon's Interplanetary Man: A Commonwealth of Worlds and the Ultimate Purpose of Space Colonisation

    E-print Network

    Crawford, Ian A

    2012-01-01

    In his 1948 lecture to the British Interplanetary Society, Olaf Stapledon considered the ultimate purpose of colonising other worlds. Having examined the possible motivations arising from improved scientific knowledge and access to extraterrestrial raw materials, he concludes that the ultimate benefits of space colonisation will be the increased opportunities for developing human (and post-human) diversity, intellectual and aesthetic potential and, especially, 'spirituality'. By the latter concept he meant a striving for "sensitive and intelligent awareness of things in the universe (including persons), and of the universe as a whole." A key insight articulated by Stapledon in this lecture was that this should be the aspiration of all human development anyway, with or without space colonisation, but that the latter would greatly increase the scope for such developments. Another key aspect of his vision was the development of a diverse, but connected, 'Commonwealth of Worlds' extending throughout the Solar Sys...

  12. Ultimate, provisional, and personal meaning of life: differences and common ground.

    PubMed

    Auhagen, Ann Elisabeth; Holub, Franziska

    2006-08-01

    Building on Viktor Frankl's clinical approach of Logotherapy and the works of subsequent theoreticians, three types of meaning of life were theoretically derived and empirically investigated, Ultimate, Provisional, and Personal meaning. These types were characterized, first, by the amount of agreement of subjects, second, by sources of Life Meaning, which were assessed by content analyses, third, by correlations, and fourth by prediction with ratings of important life concepts from the domains of Well-being, Religiosity, and Prosocial Behavior. 192 German adults, 45 men and 147 women, whose M age was 31.6 yr. (SD = 11.9), participated. Analysis indicated different sources for the Ultimate meaning compared with the other meaning types, which seem to display more similarities with each other. Other important life concepts, such as Belief, Harmony, Happiness, and Human Goodness were related to the investigated types of meaning of life. Some implications for clinical applications, research perspectives, and Positive Psychology are discussed. PMID:17037460

  13. A statistical approach to the analysis of ultimate strengths of bolted joints in laminated composites

    Microsoft Academic Search

    K. C. Schulz; H. J. Hietala; P. F. Packman

    1996-01-01

    The general linear models (GLM) routine in the statistical software package SAS has been utilized to develop a statistical model for the prediction of joint failure in single-shear joints in IM7\\/8551 graphite\\/epoxy laminates on the basis of the results of an extensive bolted-joint strength testing program. Ultimate joint strength values from the experimental study were utilized as input for the

  14. Dependence of fatigue limit of high-tension bolts on mean stress and ultimate tensile strength

    Microsoft Academic Search

    S.-S. Cho; H. Chang; K. W. Lee

    2009-01-01

    High tension bolts in critical joints in internal combustion engines are susceptible to fatigue failure. Computeraided bolted\\u000a joint design procedures require knowledge of the dependence of bolt fatigue limit on the mean stress and ultimate tensile\\u000a strength. This dependence is investigated with staircase fatigue limit tests. The test results show that when the bolt fatigue\\u000a limit is estimated with the

  15. Influence of Bolting Parameters on the Ultimate Tensile Strength and Stiffness of Composite-Metal Joints

    Microsoft Academic Search

    William S. Slovinsky; Parsaoran Hutapea

    2010-01-01

    The joining of dissimilar materials poses a challenge in mechanical structures. The objective of this research was to investigate the effect of joining parameters such as bolt spacing, geometry configuration, and overlap length on ultimate failure strength and stiffness of composite-metal hybrid joints. Woven fiberglass\\/epoxy and unidirectional carbon-fiber\\/epoxy composites have been manufactured and tested under tensile loads to obtain their

  16. Rational awareness of the ultimate in human life — The Confucian concept of “destiny”

    Microsoft Academic Search

    Dahua Cui

    2009-01-01

    The Confucian idea of “ming ? (destiny)” holds that in the course and culmination of human life, there exists some objective certainty that is both transcendent\\u000a and beyond human control. This is a concept of ultimate concern at the transcendental theoretical level in Confucianism. During\\u000a its historical development, Confucianism has constantly offered humanist interpretations of the idea of “destiny”, thinking

  17. An investigation of the ultimate flexural capacity of reinforced lightweight aggregate concrete beams

    E-print Network

    Bridges, James W

    1961-01-01

    AN INVESTIGATION OF THE ULTINATE FLEXURAL CAPACITY OF REINFORCED LIGHTWEIGHT AGGREGATE CONCRETE BEANS A Thesis By James Warwick Bridges, Jr. Submitted to the Graduate School of the Agricultural and Nechanlcai College of Texas In partial fulfl... 1lnmnt of the requirements for the degree of HASTER OF SCIENCE August 1961 Najor Subject: Civil Engineering AN INVESTIGATION OF THE ULTIMATE FLEXURAL CAPACITY OF REINFORCED LIGHTWE IGHT AGGREGATE CONCRETE BEAMS A Thesis By James Warwick...

  18. Downy woodpecker pair bond maintenance in winter: Proximate and ultimate mechanisms

    Microsoft Academic Search

    James Scott Kellam

    2003-01-01

    In most birds, the pair bond relationship during the reproductive period is ubiquitous and often necessary for reproductive success. However, trade-offs between the costs and benefits of pair bond maintenance (PBM) make this relationship more variable in the non-breeding season. I determined some of the proximate and ultimate factors that could contribute to inter- and intra-specific variation observed in avian

  19. Genetic polymorphism of the CAPN1 gene is associated with meat quality traits in Japanese quail.

    PubMed

    Rasouli, Z; Zerehdaran, S; Azari, M A; Shargh, M S

    2013-01-01

    1. The objective of the study was to investigate the polymorphisms in two regions of the calpain 1 (CAPN1) gene and their association with breast and thigh meat quality in Japanese quail (ultimate pH (pHu), lightness, redness, yellowness, drip loss, thawing-cooking loss, water holding capacity and shear force, SF). 2. Blood samples were collected randomly from 100 birds and DNA was extracted using a commercial kit. Genotypes were determined by PCR amplification followed by single-strand conformation polymorphism (SSCP) analysis. The effect of CAPN1 genotypes on meat quality traits were analysed using a general linear model (GLM) procedure. 3. Genotypes of the CAPN1 gene in the first region (217-bp) analysed were significantly associated with yellowness and SF. The TT genotype showed significantly higher yellowness and lower shear force (more tenderness) than CT and CC genotypes. Genotypes of the second region of the gene (intron 4, 800-bp) were significantly associated with pHu, redness and SF of the breast meat. The BB genotype showed significantly lower pHu and redness and higher SF (lower tenderness) than other genotypes. 4. Information on polymorphisms of the CAPN1 gene will eventually provide useful information for improving meat quality of Japanese quail through marker-assisted selection. PMID:23647179

  20. Investigation on ultimate strength of thin-walled steel single shear bolted connections with two bolts using finite element analysis

    Microsoft Academic Search

    Tae Soo Kim; Hitoshi Kuwamura; SeungHun Kim; YongTaeg Lee; Taejun Cho

    2009-01-01

    Finite element analysis (FEA) procedures for predicting the structural behaviors of single shear bolted connections in cold-formed stainless steel have been recommended through previous numerical studies conducted by T.S Kim for Kuwamura's test results and are also introduced briefly in this paper. It was shown that ultimate behaviors such as ultimate strength, failure mode and curling occurrence by FEA were

  1. 26 CFR 48.6420-1 - Credits or payments to ultimate purchaser of gasoline used on a farm.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...Credits or payments to ultimate purchaser of gasoline used on a farm. 48.6420-1 Section...Credits or payments to ultimate purchaser of gasoline used on a farm. (a) In general. If gasoline is used on a farm for farming...

  2. 26 CFR 48.6420-1 - Credits or payments to ultimate purchaser of gasoline used on a farm.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...Credits or payments to ultimate purchaser of gasoline used on a farm. 48.6420-1 Section...Credits or payments to ultimate purchaser of gasoline used on a farm. (a) In general. If gasoline is used on a farm for farming...

  3. 26 CFR 48.6420-1 - Credits or payments to ultimate purchaser of gasoline used on a farm.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...Credits or payments to ultimate purchaser of gasoline used on a farm. 48.6420-1 Section...Credits or payments to ultimate purchaser of gasoline used on a farm. (a) In general. If gasoline is used on a farm for farming...

  4. 26 CFR 48.6420-1 - Credits or payments to ultimate purchaser of gasoline used on a farm.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...Credits or payments to ultimate purchaser of gasoline used on a farm. 48.6420-1 Section...Credits or payments to ultimate purchaser of gasoline used on a farm. (a) In general. If gasoline is used on a farm for farming...

  5. Application of SERS Nanoparticles for Intracellular pH Measurements

    SciTech Connect

    Laurence, T; Talley, C; Colvin, M; Huser, T

    2004-10-21

    We present an alternative approach to optical probes that will ultimately allow us to measure chemical concentrations in microenvironments within cells and tissues. This approach is based on monitoring the surface-enhanced Raman scattering (SERS) response of functionalized metal nanoparticles (50-100 nm in diameter). SERS allows for the sensitive detection of changes in the state of chemical groups attached to individual nanoparticles and small clusters. Here, we present the development of a nanoscale pH meter. The pH response of these nanoprobes is tested in a cell-free medium, measuring the pH of the solution immediately surrounding the nanoparticles. Heterogeneities in the SERS signal, which can result from the formation of small nanoparticle clusters, are characterized using SERS correlation spectroscopy and single particle/cluster SERS spectroscopy. The response of the nanoscale pH meters is tested under a wide range of conditions to approach the complex environment encountered inside living cells and to optimize probe performance.

  6. arXiv:astro-ph/0408456v21Dec2004 Measuring Dark Energy Clustering with CMB-Galaxy Correlations

    E-print Network

    Hu, Wayne

    arXiv:astro-ph/0408456v21Dec2004 Measuring Dark Energy Clustering with CMB-Galaxy Correlations opportunity to study the dynamics of the dark energy through its large scale clustering properties. Ultimately 3% changes in the gravitational potential or total density fluctuation due to dark energy clustering

  7. Effects of glycerin supplementation on meat pH of young Holstein bulls mixed at the slaughterhouse

    Microsoft Academic Search

    N. Mach; A. Bach; M. Devant

    The aim of this study was to evaluate the effects of dietary glycerin supplementation on ultimate meat pH of bulls mixed during 3 h before slaughter. Forty-eight young Holstein bulls (464 ± 40 kg final BW) were randomly assigned to 1 of 4 concentrates containing 4 glycerin (86% glycerol) levels (0, 4, 8, and 12% of concentrate DM). Concentrate and

  8. Feedback control of a bipedal walker / runner The ultimate goal of my PhD Research is to achieve running on

    E-print Network

    Sreenath, Koushil

    dynamic manifold. However, MABEL's transmission has a compliant element, which led to new control. To attack this problem, a compliant-HZD [4] based controller was proposed for hopping to preserve. The choice of the variables to be controlled, , makes the zero dynamics compliant. The choice

  9. The fiber-optic gyroscope: Challenges to become the ultimate rotation-sensing technology

    NASA Astrophysics Data System (ADS)

    Lefèvre, Hervé C.

    2013-12-01

    Taking advantage of the development of optical-fiber communication technologies, the fiber-optic gyroscope started to be investigated in the mid 1970s, opening the way for a fully solid-state rotation sensor. It was firstly seen as dedicated to medium-grade applications, but today, it reaches strategic-grade performance and surpasses its well-established competitor, the ring-laser gyroscope, in terms of bias noise and long-term stability. Further progresses remain possible, the challenge being the ultimate inertial navigation performance of one nautical mile per month corresponding to a long-term bias stability of 10-5°/h.

  10. 1-nm-thick graphene tri-layer as the ultimate copper diffusion barrier

    SciTech Connect

    Nguyen, Ba-Son [Department of Mechanical Engineering, National Cheng Kung University, 1 University Road, Tainan 701, Taiwan (China); Lin, Jen-Fin [Department of Mechanical Engineering, National Cheng Kung University, 1 University Road, Tainan 701, Taiwan (China); Center for Micro/Nano Science and Technology, National Cheng Kung University, 1 University Road, Tainan 701, Taiwan (China); Perng, Dung-Ching, E-mail: dcperng@ee.ncku.edu.tw [Institute of Microelectronics and Electrical Engineering Department, National Cheng Kung University, 1 University Road, Tainan 701, Taiwan (China); Center for Micro/Nano Science and Technology, National Cheng Kung University, 1 University Road, Tainan 701, Taiwan (China)

    2014-02-24

    We demonstrate the thinnest ever reported Cu diffusion barrier, a 1-nm-thick graphene tri-layer. X-ray diffraction patterns and Raman spectra show that the graphene is thermally stable at up to 750?°C against Cu diffusion. Transmission electron microscopy images show that there was no inter-diffusion in the Cu/graphene/Si structure. Raman analyses indicate that the graphene may have degraded into a nanocrystalline structure at 750?°C. At 800?°C, the perfect carbon structure was damaged, and thus the barrier failed. The results of this study suggest that graphene could be the ultimate Cu interconnect diffusion barrier.

  11. Optimal estimation of losses at the ultimate quantum limit with non-Gaussian states

    E-print Network

    G. Adesso; F. Dell'Anno; S. De Siena; F. Illuminati; L. A. M. Souza

    2009-04-23

    We address the estimation of the loss parameter of a bosonic channel probed by arbitrary signals. Unlike the optimal Gaussian probes, which can attain the ultimate bound on precision asymptotically either for very small or very large losses, we prove that Fock states at any fixed photon number saturate the bound unconditionally for any value of the loss. In the relevant regime of low-energy probes, we demonstrate that superpositions of the first low-lying Fock states yield an absolute improvement over any Gaussian probe. Such few-photon states can be recast quite generally as truncations of de-Gaussified photon-subtracted states.

  12. Engineering Ultimate Self-Protection in Autonomic Agents for Space Exploration Missions

    NASA Technical Reports Server (NTRS)

    Sterritt, Roy; Hinchey, Mike

    2005-01-01

    NASA's Exploration Initiative (EI) will push space exploration missions to the limit. Future missions will be required to be self-managing as well as self-directed, in order to meet the challenges of human and robotic space exploration. We discuss security and self protection in autonomic agent based-systems, and propose the ultimate self-protection mechanism for such systems-self-destruction. Like other metaphors in Autonomic Computing, this is inspired by biological systems, and is the analog of biological apoptosis. Finally, we discus the role it might play in future NASA space exploration missions.

  13. The Ultimate Ungulate Page: Your Guide to the World's Hoofed Mammals

    NSDL National Science Digital Library

    Huffman, Brent

    A very nicely-crafted website, The Ultimate Ungulate Page: Your Guide to the World's Hoofed Mammals was created by ungulate enthusiast Brent Huffman to provide the internet community with a reliable source for information, images, and links for the world's ungulates. The website contains introductory pages for the different ungulate orders including pictures, distribution maps, diagnostic characteristics, and literature cited. Each order page also provides a species list with links to individual species pages. The separate species pages contain great photos and information about ontogeny and reproduction, behavior, taxonomic classification, and more. The site links to a Glossary, Guestbook, and site guide as well.

  14. Tzvi Tzfira, Ph.D. Vitaly Citovsky, Ph.D.

    E-print Network

    Citovsky, Vitaly

    #12;Tzvi Tzfira, Ph.D. Vitaly Citovsky, Ph.D. Department of Biochemistry and Cell Biology State Bioscience / Eurekah.com, 810 South Church Street Georgetown, Texas, U.S.A. 78626 Phone: 512/ 863 7762; FAX selection and dosage and the specifications and usage of equipment and devices, as set forth in this book

  15. Ph.D. Mathematical Sciences Ph.D. Mathematical Sciences

    E-print Network

    Hemmers, Oliver

    Ph.D. Mathematical Sciences Program Ph.D. Mathematical Sciences Department(s) Mathematical Sciences. Number for later reference. 1. Students will have a broad understanding of several areas of mathematical to understand, analyze, create, and write mathematical proofs. 3. Students will be able to study and understand

  16. Ph.D. Physics Program Ph.D. in Physics

    E-print Network

    Hemmers, Oliver

    Ph.D. Physics Program Ph.D. in Physics Department(s) Physics and Astronomy College Sciences Program Assessment Coordinator Michael Pravica pravica@physics.unlv.edu 895-1723 Five-Year Implementation Dates (2010 for physics at the graduate level 4. understand statistical physics at the graduate level 5. perform

  17. Ultimate Heat Sink Thermal Performance and Water Utilization: Measurements on Cooling and Spray Ponds

    SciTech Connect

    Athey, G. F.; Hadlock, R. K.; Abbey, O. B.

    1982-02-01

    A data acquisition research program, entitled "Ultimate Heat Sink Performance Field Experiments," has been brought to completion. The primary objective is to obtain the requisite data to characterize thermal performance and water utilization for cooling ponds and spray ponds at elevated temperature. Such data are useful for modeling purposes, but the work reported here does not contain modeling efforts within its scope. The water bodies which have been studied are indicative of nuclear reactor ultimate heat sinks, components of emergency core cooling systems. The data reflect thermal performance and water utilization for meteorological and solar influences which are representative of worst-case combinations of conditions. Constructed water retention ponds, provided with absolute seals against seepage, have been chosen as facilities for the measurement programs; the first pond was located at Raft River, Idaho, and the second at East Mesa, California. The data illustrate and describe, for both cooling ponds and spray ponds, thermal performance and water utilization as the ponds cool from an initially elevated temperature. To obtain the initial elevated temperature, it has been convenient to conduct the measurements at geothermal sites having large supplies and delivery rates of hot geothermal fluid. The data are described and discussed in the text, and presented in the form of data volumes as appendices.

  18. Ultimate strength performance of tankers associated with industry corrosion addition practices

    NASA Astrophysics Data System (ADS)

    Kim, Do Kyun; Kim, Han Byul; Zhang, Xiaoming; Li, Chen Guang; Paik, Jeom Kee

    2014-09-01

    In the ship and offshore structure design, age-related problems such as corrosion damage, local denting, and fatigue damage are important factors to be considered in building a reliable structure as they have a significant influence on the residual structural capacity. In shipping, corrosion addition methods are widely adopted in structural design to prevent structural capacity degradation. The present study focuses on the historical trend of corrosion addition rules for ship structural design and investigates their effects on the ultimate strength performance such as hull girder and stiffened panel of double hull oil tankers. Three types of rules based on corrosion addition models, namely historic corrosion rules (pre-CSR), Common Structural Rules (CSR), and harmonised Common Structural Rules (CSRH) are considered and compared with two other corrosion models namely UGS model, suggested by the Union of Greek Shipowners (UGS), and Time-Dependent Corrosion Wastage Model (TDCWM). To identify the general trend in the effects of corrosion damage on the ultimate longitudinal strength performance, the corrosion addition rules are applied to four representative sizes of double hull oil tankers namely Panamax, Aframax, Suezmax, and VLCC. The results are helpful in understanding the trend of corrosion additions for tanker structures

  19. The theoretical ultimate magnetoelectric coefficients of magnetoelectric composites by optimization design

    NASA Astrophysics Data System (ADS)

    Wang, H.-L.; Liu, B.

    2014-03-01

    This paper investigates what is the largest magnetoelectric (ME) coefficient of ME composites, and how to realize it. From the standpoint of energy conservation, a theoretical analysis is carried out on an imaginary lever structure consisting of a magnetostrictive phase, a piezoelectric phase, and a rigid lever. This structure is a generalization of various composite layouts for optimization on ME effect. The predicted theoretical ultimate ME coefficient plays a similar role as the efficiency of ideal heat engine in thermodynamics, and is used to evaluate the existing typical ME layouts, such as the parallel sandwiched layout and the serial layout. These two typical layouts exhibit ME coefficient much lower than the theoretical largest values, because in the general analysis the stress amplification ratio and the volume ratio can be optimized independently and freely, but in typical layouts they are dependent or fixed. To overcome this shortcoming and achieve the theoretical largest ME coefficient, a new design is presented. In addition, it is found that the most commonly used electric field ME coefficient can be designed to be infinitely large. We doubt the validity of this coefficient as a reasonable ME effect index and consider three more ME coefficients, namely the electric charge ME coefficient, the voltage ME coefficient, and the static electric energy ME coefficient. We note that the theoretical ultimate value of the static electric energy ME coefficient is finite and might be a more proper measure of ME effect.

  20. The theoretical ultimate magnetoelectric coefficients of magnetoelectric composites by optimization design

    SciTech Connect

    Wang, H.-L.; Liu, B., E-mail: liubin@tsinghua.edu.cn [AML, CNMM, Department of Engineering Mechanics, Tsinghua University, Beijing 100084 (China)

    2014-03-21

    This paper investigates what is the largest magnetoelectric (ME) coefficient of ME composites, and how to realize it. From the standpoint of energy conservation, a theoretical analysis is carried out on an imaginary lever structure consisting of a magnetostrictive phase, a piezoelectric phase, and a rigid lever. This structure is a generalization of various composite layouts for optimization on ME effect. The predicted theoretical ultimate ME coefficient plays a similar role as the efficiency of ideal heat engine in thermodynamics, and is used to evaluate the existing typical ME layouts, such as the parallel sandwiched layout and the serial layout. These two typical layouts exhibit ME coefficient much lower than the theoretical largest values, because in the general analysis the stress amplification ratio and the volume ratio can be optimized independently and freely, but in typical layouts they are dependent or fixed. To overcome this shortcoming and achieve the theoretical largest ME coefficient, a new design is presented. In addition, it is found that the most commonly used electric field ME coefficient can be designed to be infinitely large. We doubt the validity of this coefficient as a reasonable ME effect index and consider three more ME coefficients, namely the electric charge ME coefficient, the voltage ME coefficient, and the static electric energy ME coefficient. We note that the theoretical ultimate value of the static electric energy ME coefficient is finite and might be a more proper measure of ME effect.

  1. The n-of-1 clinical trial: the ultimate strategy for individualizing medicine?

    PubMed Central

    Lillie, Elizabeth O; Patay, Bradley; Diamant, Joel; Issell, Brian; Topol, Eric J; Schork, Nicholas J

    2011-01-01

    N-of-1 or single subject clinical trials consider an individual patient as the sole unit of observation in a study investigating the efficacy or side-effect profiles of different interventions. The ultimate goal of an n-of-1 trial is to determine the optimal or best intervention for an individual patient using objective data-driven criteria. Such trials can leverage study design and statistical techniques associated with standard population-based clinical trials, including randomization, washout and crossover periods, as well as placebo controls. Despite their obvious appeal and wide use in educational settings, n-of-1 trials have been used sparingly in medical and general clinical settings. We briefly review the history, motivation and design of n-of-1 trials and emphasize the great utility of modern wireless medical monitoring devices in their execution. We ultimately argue that n-of-1 trials demand serious attention among the health research and clinical care communities given the contemporary focus on individualized medicine. PMID:21695041

  2. Plasticity and constraints on social evolution in African mole-rats: ultimate and proximate factors

    PubMed Central

    Faulkes, Chris G.; Bennett, Nigel C.

    2013-01-01

    Here, we review comparative studies of African mole-rats (family Bathyergidae) to explain how constraints acting at the ultimate (environmental) and proximate (organismal) levels have led to convergent gains and losses of sociality within this extensive adaptive radiation of subterranean rodents endemic to sub-Saharan Africa. At the ultimate level, living in environments that range from mesic through to arid has led to both variation and flexibility in social organization among species, culminating in the pinnacle of social evolution in the eusocial naked and Damaraland mole-rats (Heterocephalus glaber and Fukomys damarensis). The common mole-rat (Cryptomys hottentotus) provides a model example of how plasticity in social traits exists within a single species inhabiting areas with different ecological constraint. At the proximate level, reproductive strategies and cooperative breeding may be constrained by the correlated evolution of a suite of traits including physiological suppression of reproduction, the development of physiological and morphological castes, and the mode of ovulatory control and seasonality in breeding. Furthermore, recent neurobiological advances indicate that differential patterns of neurotransmitter expression within the forebrain may underpin (and limit) either a solitary or group living/cooperative lifestyle not only in mole-rats, but also more widely among disparate mammalian taxa. PMID:23569295

  3. The pH Game.

    ERIC Educational Resources Information Center

    Chemecology, 1996

    1996-01-01

    Describes a game that can be used to teach students about the acidity of liquids and substances around their school and enable them to understand what pH levels tell us about the environment. Students collect samples and measure the pH of water, soil, plants, and other natural material. (DDR)

  4. Jeanne Murhpy, PhD

    Cancer.gov

    Jeanne Murphy, PhD, CNM is a postdoctoral Cancer Prevention Fellow in the Breast and Gynecologic Cancer Research Group in the Division of Cancer Prevention. She comes to BGCRG with a PhD from Johns Hopkins University School of Nursing. She also completed a graduate certificate in Health Disparities and Health Inequality at Johns Hopkins Bloomberg School of Public Health.

  5. PH as a stress signal

    Microsoft Academic Search

    Sally Wilkinson

    1999-01-01

    The pH of the xylem sap of plants experiencing a range of environmental conditions can increase by over a whole pH unit. This results in an increased ABA concentration in the apoplast adjacent to the stomatal guard cells in the leaf epidermis, by reducing the ability of the mesophyll and epidermal symplast to sequester ABA away from this compartment. As

  6. Welcomed within Graceland, Elvis impersonators gather for finals of the first "Ultimate Elvis" contest

    NSDL National Science Digital Library

    Grinnell, Max

    2007-08-17

    The King serves motorists at Roseburg Albertson's, will entertain for employeeshttp://www.newsreview.info/article/20070814/NEWS/70814022Ultimate Elvis Contest [pdf]http://www.elvis.com/ultimatecontest/How Did Elvis Get Turned Into a Racist?http://www.elvis.com.au/presley/peter_guralnick__elvis_racist.shtmlJoe Moscheo's The Gospel of Elvis Presleyhttp://www.cmt.com/news/articles/1566978/20070813/presley_elvis.jhtmlElvis: 30 weird and wonderful factshttp://www.belfasttelegraph.co.uk/entertainment/music-gigs/news/article2859595.eceAmazing Grace [Real Player]http://lcweb2.loc.gov/diglib/ihas/loc.natlib.ihas.200149090/default.htmlIf imitation is in fact the sincerest form of flattery, then the late Elvis Presley must certainly be flattered someplace in the great beyond. Even before he passed away thirty years ago, there were Elvis impersonators (some prefer the term "tribute artist") who traveled the globe performing as the King of Rock and Roll in a variety of guises. The permutations are seemingly endless, and they include those who adopt Elvis's signature late 1960s massive sideburns and still others whose sartorial style is not complete with a jumpsuit overloaded with sequins and other trappings. The folks who have managed Elvis's estate and Graceland have generally been dismissive of these tribute artists. However, this indifference has recently changed into a rather warm welcome as the company that operates Graceland will pay host to the first annual finals of the "Ultimate Elvis" contest this Friday. The contest has been going on since March, and one grand prize winner will be selected in what promises to be quite a competition. While some Elvis devotees may still look askance at such events, Paul Jankowski, the marketing chief of Elvis Presley Enterprises, Inc. was emphatic as he spoke about this event: "This is not an impersonator contest. This is all about paying tribute to Elvis." The first link will take visitors to a piece from this Tuesday's Washington Post which talks about the "Ultimate Elvis" contest at Graceland. Several thousand miles away in Roseburg, Oregon, The News-Review recently reported on Jerry Norby, a newly minted Elvis, and his first day on the job. Visitors can read about Norby and his work pumping gas and singing "My Way" at the second link. The third link leads to the homepage of the Ultimate Elvis Contest. Here, visitors can learn about the finalists and read a letter from Elvis to a tribute artist. The fourth link leads to a recent editorial by Elvis biographer Peter Guralnick which first appeared in the New York Times. In the piece, Guralnick addresses the "absurd claims" that contend Elvis was a racist. For another perspective on Elvis's life, visitors will want to check out the fifth link, which contains an excerpt from Joe Moscheo's recent book which recalls his time performing with Elvis and his well-documented love of gospel music. The sixth link leads to a listing of thirty little-known facts about Elvis, including the observation that his Grammy Awards all came from his numerous gospel recordings. The final link leads to one such recording, which happens to be his 1971 recording of "Amazing Grace".

  7. An experimental investigation on the ultimate strength of epoxy repaired braced partial infilled RC frames

    NASA Astrophysics Data System (ADS)

    Dubey, Shailendra Kumar Damodar; Kute, Sunil

    2014-09-01

    Due to earthquake, buildings are damaged partially or completely. Particularly structures with soft storey are mostly affected. In general, such damaged structures are repaired and reused. In this regard, an experimental investigation was planned and conducted on models of single-bay, single-storey of partial concrete infilled reinforced concrete (RC) frames up to collapse with corner, central and diagonal steel bracings. Such collapsed frames were repaired with epoxy resin and retested. The initiative was to identify the behaviour, extent of restored ultimate strength and deflection of epoxy-retrofitted frames in comparison to the braced RC frames. The performance of such frames has been considered only for lateral loads. In comparison to bare RC frames, epoxy repaired partial infilled frames have significant increase in the lateral load capacity. Central bracing is more effective than corner and diagonal bracing. For the same load, epoxy repaired frames have comparable deflection than similar braced frames.

  8. Assessing Fatigue and Ultimate Load Uncertainty in Floating Offshore Wind Turbines Due to Varying Simulation Length

    SciTech Connect

    Stewart, G.; Lackner, M.; Haid, L.; Matha, D.; Jonkman, J.; Robertson, A.

    2013-07-01

    With the push towards siting wind turbines farther offshore due to higher wind quality and less visibility, floating offshore wind turbines, which can be located in deep water, are becoming an economically attractive option. The International Electrotechnical Commission's (IEC) 61400-3 design standard covers fixed-bottom offshore wind turbines, but there are a number of new research questions that need to be answered to modify these standards so that they are applicable to floating wind turbines. One issue is the appropriate simulation length needed for floating turbines. This paper will discuss the results from a study assessing the impact of simulation length on the ultimate and fatigue loads of the structure, and will address uncertainties associated with changing the simulation length for the analyzed floating platform. Recommendations of required simulation length based on load uncertainty will be made and compared to current simulation length requirements.

  9. Determination of ultimate carbonaceous BOD and the specific rate constant (K1)

    USGS Publications Warehouse

    Stamer, J.K.; Bennett, J.P.; McKenzie, Stuart W.

    1982-01-01

    Ultimate carbonaceous biochemical oxygen demand (BODu) and the specific rate constant (K1) at which the demand is exerted are important parameters in designing biological wastewater treatment plants and in assessing the impact of wastewater on receiving streams. An analytical method is presented which uses time-series concentrations of BOD, defined as the calculated sum of dissolved oxygen (DO) losses at each time of measurement, for determining BODu and K1. Time-series DO measurements are obtained from a water sample that is incubated in darkness at 20 degrees Celsius in the presence of nitrapyrin, a chemical nitrification inhibitor. Time-series concentrations of BOD that approximate first order kinetics can be analyzed graphically or mathematically to compute BODu and K1.

  10. The fiber-optic gyroscope, a century after Sagnac's experiment: The ultimate rotation-sensing technology?

    NASA Astrophysics Data System (ADS)

    Lefèvre, Hervé C.

    2014-12-01

    Taking advantage of the development of optical-fiber communication technologies, the fiber-optic gyroscope (often abbreviated FOG) started to be investigated in the mid-1970s, opening the way for a fully solid-state rotation sensor. It was firstly seen as dedicated to medium-grade applications (1 ° / h range), but today, it reaches strategic-grade performance (10-4 ° / h range) and surpasses its well-established competitor, the ring-laser gyroscope, in terms of bias noise and long-term stability. Further progresses remain possible, the challenge being the ultimate inertial navigation performance of one nautical mile per month corresponding to a long-term bias stability of 10-5 ° / h. This paper is also the opportunity to recall the historical context of Sagnac's experiment, the origin of all optical gyros. xml:lang="fr"

  11. Vertical nanowire array-based field effect transistors for ultimate scaling.

    PubMed

    Larrieu, G; Han, X-L

    2013-03-21

    Nanowire-based field-effect transistors are among the most promising means of overcoming the limits of today's planar silicon electronic devices, in part because of their suitability for gate-all-around architectures, which provide perfect electrostatic control and facilitate further reductions in "ultimate" transistor size while maintaining low leakage currents. However, an architecture combining a scalable and reproducible structure with good electrical performance has yet to be demonstrated. Here, we report a high performance field-effect transistor implemented on massively parallel dense vertical nanowire arrays with silicided source/drain contacts and scaled metallic gate length fabricated using a simple process. The proposed architecture offers several advantages including better immunity to short channel effects, reduction of device-to-device variability, and nanometer gate length patterning without the need for high-resolution lithography. These benefits are important in the large-scale manufacture of low-power transistors and memory devices. PMID:23403487

  12. Xenobiology: A new form of life as the ultimate biosafety tool

    PubMed Central

    Schmidt, Markus

    2010-01-01

    Synthetic biologists try to engineer useful biological systems that do not exist in nature. One of their goals is to design an orthogonal chromosome different from DNA and RNA, termed XNA for xeno nucleic acids. XNA exhibits a variety of structural chemical changes relative to its natural counterparts. These changes make this novel information-storing biopolymer “invisible” to natural biological systems. The lack of cognition to the natural world, however, is seen as an opportunity to implement a genetic firewall that impedes exchange of genetic information with the natural world, which means it could be the ultimate biosafety tool. Here I discuss, why it is necessary to go ahead designing xenobiological systems like XNA and its XNA binding proteins; what the biosafety specifications should look like for this genetic enclave; which steps should be carried out to boot up the first XNA life form; and what it means for the society at large. PMID:20217844

  13. Biomimetics and the Development of Humanlike Robots as the Ultimate Challenge

    NASA Technical Reports Server (NTRS)

    Bar-Cohen, Yoseph

    2011-01-01

    Evolution led to effective solutions to nature's challenges and they were improved over millions of years. Humans have always made efforts to use nature as a model for innovation and problems solving. These efforts became more intensive in recent years where systematic studies of nature are being made towards better understanding and applying more sophisticated capabilities. Making humanlike robots, including the appearance, functions and intelligence, poses the ultimate challenges to biomimetics. For many years, making such robots was considered science fiction, but as a result of significant advances in biologically inspired technologies, such robots are increasingly becoming an engineering reality. There are already humanlike robots that walk, talk, interpret speech, make eye-contact and facial expressions, as well as perform many other humanlike functions. In this paper, the state-of-the-art of humanlike robots, potential applications and issues of concern will be reviewed.

  14. Ultimate wind sensing capabilities of the jimsphere and other rising balloon systems

    NASA Technical Reports Server (NTRS)

    Luers, J. K.; Macarthur, C. D.

    1972-01-01

    The error in the magnitude of the horizontal wind field as computed for balloons with linear and quadratic rise rates ascending through a light, moderate, or severe wind field is derived. The rise rate function of the Jimsphere is analyzed as a special case. Figures are presented of wind error versus altitude for each rise rate and wind field, assuming linear smoothing. The ultimate capability of rising balloon systems for measuring wind from the surface to 18 kilometers can be determined from the data and the wind accuracy can be computed by knowing only the rise rate behavior versus altitude. The radii of smooth and roughened spheres needed to achieve the desired rise rate at various altitudes are derived. The radii for smooth and roughened balloons for tow-meter-per-second to 20-meter-per-second rise rates at 10 and 14 km altitudes, and the wind-following capability for each are tabulated.

  15. Secret Plans Tab by Eagles Of Death Metal, www.Ultimate-Guitar.Com SECRET PLANS -Eagles of Death Metal

    E-print Network

    Reiners, Peter W.

    Secret Plans Tab by Eagles Of Death Metal, www.Ultimate-Guitar.Com ------------------------------------------------------------------------------- SECRET PLANS - Eagles of Death Metal 4] (What I want!) And that's it! Another simple but great song by the Eagles of Death Metal. #12;

  16. 15 CFR Supplement No. 3 to Part 748 - BIS-711, Statement by Ultimate Consignee and Purchaser Instructions

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ...Statement by Ultimate Consignee and Purchaser Instructions No. Supplement No. 3 to Part 748 Commerce and Foreign Trade Regulations...AND DOCUMENTATION Pt. 748, Supp. 3 Supplement No. 3 to Part 748—BIS-711, Statement by...

  17. 15 CFR Supplement No. 3 to Part 748 - BIS-711, Statement by Ultimate Consignee and Purchaser Instructions

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ...Statement by Ultimate Consignee and Purchaser Instructions No. Supplement No. 3 to Part 748 Commerce and Foreign Trade Regulations...AND DOCUMENTATION Pt. 748, Supp. 3 Supplement No. 3 to Part 748—BIS-711, Statement by...

  18. 26 CFR 48.6427-9 - Diesel fuel and kerosene; claims by registered ultimate vendors (farming and State use).

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...relating to kerosene sold from a blocked pump are made by registered ultimate vendors (blocked pump) under § 48.6427-10...claim: (i) The total number of gallons. (ii) A statement...claimant's registration number. (iv) The name and...

  19. 26 CFR 48.6427-9 - Diesel fuel and kerosene; claims by registered ultimate vendors (farming and State use).

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...relating to kerosene sold from a blocked pump are made by registered ultimate vendors (blocked pump) under § 48.6427-10...claim: (i) The total number of gallons. (ii) A statement...claimant's registration number. (iv) The name and...

  20. 26 CFR 48.6427-9 - Diesel fuel and kerosene; claims by registered ultimate vendors (farming and State use).

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...relating to kerosene sold from a blocked pump are made by registered ultimate vendors (blocked pump) under § 48.6427-10...claim: (i) The total number of gallons. (ii) A statement...claimant's registration number. (iv) The name and...

  1. 26 CFR 48.6427-9 - Diesel fuel and kerosene; claims by registered ultimate vendors (farming and State use).

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...relating to kerosene sold from a blocked pump are made by registered ultimate vendors (blocked pump) under § 48.6427-10...claim: (i) The total number of gallons. (ii) A statement...claimant's registration number. (iv) The name and...

  2. Stapledon's Interplanetary Man: A Commonwealth of Worlds and the Ultimate Purpose of Space Colonisation

    NASA Astrophysics Data System (ADS)

    Crawford, Ian A.

    In his 1948 lecture to the British Interplanetary Society Stapledon considered the ultimate purpose of colonising other worlds. Having examined the possible motivations arising from improved scientific knowledge and access to extraterrestrial raw materials, he concludes that the ultimate benefits of space colonisation will be the increased opportunities for developing human (and post-human) diversity, intellectual and aesthetic potential and, especially, `spirituality'. By the latter concept he meant a striving for ``sensitive and intelligent awareness of things in the universe (including persons), and of the universe as a whole.'' A key insight articulated by Stapledon in this lecture was that this should be the aspiration of all human development anyway, with or without space colonisation, but that the latter would greatly increase the scope for such developments. Another key aspect of his vision was the development of a diverse, but connected, `Commonwealth of Worlds' extending throughout the Solar System, and eventually beyond, within which human potential would be maximised. In this paper I analyse Stapledon's vision of space colonisation, and will conclude that his overall conclusions remain sound. However, I will also argue that he was overly utopian in believing that human social and political unity are prerequisites for space exploration (while agreeing that they are desirable objectives in their own right), and that he unnecessarily downplayed the more prosaic scientific and economic motivations which are likely to be key drivers for space exploration (if not colonisation) in the shorter term. Finally, I draw attention to some recent developments in international space policy which, although probably not influenced by Stapledon's work, are nevertheless congruent with his overarching philosophy as outlined in `Interplanetary Man?'.

  3. Measurement of pH micro-heterogeneity in natural cheese matrices by fluorescence lifetime imaging

    PubMed Central

    Burdikova, Zuzana; Svindrych, Zdenek; Pala, Jan; Hickey, Cian D.; Wilkinson, Martin G.; Panek, Jiri; Auty, Mark A. E.; Periasamy, Ammasi; Sheehan, Jeremiah J.

    2015-01-01

    Cheese, a product of microbial fermentation may be defined as a protein matrix entrapping fat, moisture, minerals and solutes as well as dispersed bacterial colonies. The growth and physiology of bacterial cells in these colonies may be influenced by the microenvironment around the colony, or alternatively the cells within the colony may modify the microenvironment (e.g., pH, redox potential) due to their metabolic activity. While cheese pH may be measured at macro level there remains a significant knowledge gap relating to the degree of micro-heterogeneity of pH within the cheese matrix and its relationship with microbial, enzymatic and physiochemical parameters and ultimately with cheese quality, consistency and ripening patterns. The pH of cheese samples was monitored both at macroscopic scale and at microscopic scale, using a non-destructive microscopic technique employing C-SNARF-4 and Oregon Green 488 fluorescent probes. The objectives of this work were to evaluate the suitability of these dyes for microscale pH measurements in natural cheese matrices and to enhance the sensitivity and extend the useful pH range of these probes using fluorescence lifetime imaging (FLIM). In particular, fluorescence lifetime of Oregon Green 488 proved to be sensitive probe to map pH micro heterogeneity within cheese matrices. Good agreement was observed between macroscopic scale pH measurement by FLIM and by traditional pH methods, but in addition considerable localized microheterogeneity in pH was evident within the curd matrix with pH range between 4.0 and 5.5. This technique provides significant potential to further investigate the relationship between cheese matrix physico-chemistry and bacterial metabolism during cheese manufacture and ripening. PMID:25798136

  4. The influence of diets supplemented with conjugated linoleic acid, selenium, and vitamin E, with or without animal protein, on the quality of pork from female pigs.

    PubMed

    Janz, J A M; Morel, P C H; Purchas, R W; Corrigan, V K; Cumarasamy, S; Wilkinson, B H P; Hendriks, W H

    2008-06-01

    Pork from the LM and semimembranosus muscle (SM) of 59 female Duroc-cross pigs with a mean carcass weight of 80.1 kg (SD = 3.2) were assessed for quality. The pigs were grown on diets containing either animal and plant products (the animal group) or plant products only (the plant group), with or without a supplement (0.31% of the diet) containing extra CLA, selenium, and vitamin E. The 45-min postmortem pH of LM was unaffected by dietary treatment (mean 6.44, SD = 0.21), but the ultimate pH (pHu) was lower for the supplemented animal group for both muscles within the animal group (P < 0.04). Water-holding capacity in terms of drip loss for SM and expressed juice levels for LM, but not cooking loss, was also lower for the supplemented animal group (P < 0.01), but this difference was reduced after adjustment to a constant pHu (P < 0.07). Warner-Bratzler shear force (WBSF) values were greater for the plant group for LM only (P < 0.05), both before and after pHu adjustment. Differences between dietary treatment groups for color (L*, a*, and b*) were small and seldom significant before or after pHu adjustment. Sensory assessment of LM samples (with 5% subcutaneous fat added) from 32 pigs (8 per group) for 8 odor notes and 11 flavor notes by a trained analytical sensory panel of 13 people revealed no differences between the groups, except that the percentage of instances in which a rancid odor was detected was greater for the supplemented plant group compared with the control plant group (25 vs. 12%). Differences (P < 0.001) were shown between the muscles such that, relative to SM, LM had lower pHu values, greater drip losses, greater WBSF values, greater L* values, and lower chroma values, but similar levels of cooking loss. It is concluded that the dietary treatments imposed to improve the nutritional value of pork had some effects on certain meat quality parameters, but that the overall effects on appearance and palatability were small and unlikely to be of practical importance. PMID:18310494

  5. Advanced Biotelemetry Systems for Space Life Sciences: PH Telemetry

    NASA Technical Reports Server (NTRS)

    Hines, John W.; Somps, Chris; Ricks, Robert; Kim, Lynn; Connolly, John P. (Technical Monitor)

    1995-01-01

    The SENSORS 2000! (S2K!) program at NASA's Ames Research Center is currently developing a biotelemetry system for monitoring pH and temperature in unrestrained subjects. This activity is part of a broader scope effort to provide an Advanced Biotelemetry System (ABTS) for use in future space life sciences research. Many anticipated research endeavors will require biomedical and biochemical sensors and related instrumentation to make continuous inflight measurements in a variable-gravity environment. Since crew time is limited, automated data acquisition, data processing, data storage, and subject health monitoring are required. An automated biochemical and physiological data acquisition system based on non invasive or implantable biotelemetry technology will meet these requirements. The ABTS will ultimately acquire a variety of physiological measurands including temperature, biopotentials (e.g. ECG, EEG, EMG, EOG), blood pressure, flow and dimensions, as well as chemical and biological parameters including pH. Development activities are planned in evolutionary, leveraged steps. Near-term activities include 1) development of a dual channel pH/temperature telemetry system, and 2) development of a low bandwidth, 4-channel telemetry system, that measures temperature, heart rate, pressure, and pH. This abstract describes the pH/temperature telemeter.

  6. David Cheresh, PhD

    Cancer.gov

    Meetings & Events Home Agenda Speaker Biosketches Abstracts Logistics Contact Speaker Biosketches David Cheresh, PhD(University of California, San Diego) Dr. David Cheresh studies the mechanism of action of signaling networks that regulate

  7. Esophageal pH monitoring

    MedlinePLUS

    pH monitoring - esophageal; Esophageal acidity test ... esophagitis You may need to have the following tests if your doctor suspects esophagitis : Barium swallow Esophagogastroduodenoscopy (also called upper GI endoscopy)

  8. Lattice Design for PEP-X Ultimate Storage Ring Light Source

    SciTech Connect

    Bane, K.L.F.; Cai, Y.; Nosochkov, Y.; Wang, M.-H.; /SLAC; Hettel, R.O.; /SLAC

    2011-12-13

    SLAC expertise in designing and operating high current storage rings and the availability of the 2.2-km PEP-II tunnel present an opportunity for building a next generation light source - PEP-X - that would replace the SPEAR3 storage ring in the future. The PEP-X 'baseline' design, with 164 pm-rad emittance at 4.5 GeV beam energy and a current of 1.5 A, was completed in 2010. As a next step, a so-called 'ultimate' PEP-X lattice, reducing the emittance to 11 pm-rad at zero current, has been designed. This emittance approaches the diffraction limited photon emittance for multi-keV photons, providing near maximum photon brightness and high coherence. It is achieved by using 7-bend achromat cells in the ring arcs and a 90-m damping wiggler in one of the 6 long straight sections. Details of the lattice design, dynamic aperture, and calculations of the intra-beam scattering effect and Touschek lifetime at a nominal 0.2 A current are presented. Accelerator-based light sources are in high demand for many experimental applications. The availability of the 2.2-km PEP-II tunnel at SLAC presents an opportunity for building a next generation light source - PEP-X - that would replace the existing SPEAR3 light source in the future. The PEP-X study started in 2008, and the 'baseline' design, yielding 164 pm-rad emittance at 4.5 GeV beam energy and a current of 1.5 A, was completed in 2010. This relatively conservative design can be built using existing technology. However, for a long term future, it is natural to investigate a more aggressive, so-called 'ultimate' ring design. The goal is to reduce the electron emittance in both x and y planes to near the diffraction limited photon emittance of 8 pm-rad at hard X-ray photon wavelength of 0.1 nm. This would provide a near maximum photon brightness and significant increase in photon coherence. This study was motivated by the advances in low emittance design at MAX-IV. The latter was used as a starting point for the PEP-X arc lattice, however new features were included into the design for better tuning capabilities and compensation of non-linear optics effects. Further emittance reduction is achieved with a 90-m damping wiggler. Finally, intra-beam scattering (IBS) and Touschek lifetime effects were estimated and cross-checked using various codes.

  9. How to Relate Complex DNA Repair Genotypes to Pathway Function and, Ultimately, Health Risk

    SciTech Connect

    Jones, IM

    2002-01-09

    Exposure to ionizing radiation increases the incidence of cancer. However, predicting which individuals are at most risk from radiation exposure is a distant goal. Predictive ability is needed to guide policies that regulate radiation exposure and ensure that medical treatments have maximum benefit and minimum risk. Differences between people in susceptibility to radiation are largely based on their genotype, the genes inherited from their parents. Among the important genes are those that produce proteins that repair DNA damaged by radiation. Base Excision Repair (BER) proteins repair single strand breaks and oxidized bases in DNA. Double Strand Break Repair proteins repair broken chromosomes. Using technologies and information from the Human Genome Project, we have previously determined that the DNA sequence of DNA repair genes varies within the human population. An average of 3-4 different variants were found that affect the protein for each of 37 genes studied. The average frequency of these variants is 5%. Given the many genes in each DNA repair pathway and their many variants, technical ability to determine an individual's repair genotype greatly exceeds ability to interpret the information. A long-term goal is to relate DNA repair genotypes to health risk from radiation. This study focused on the BER pathway. The BER genes are known, variants of the genes have been identified at LLNL, and LLNL had recently developed an assay for BER function using white blood cells. The goal of this initial effort was to begin developing data that could be used to test the hypothesis that many different genotypes have similar DNA repair capacity phenotypes (function). Relationships between genotype and phenotype could then be used to group genotypes with similar function and ultimately test the association of groups of genotypes with health risk from radiation. Genotypes with reduced repair function are expected to increase risk of radiation-induced health effects. The goal of this pilot project was to obtain preliminary data on genetic variation in DNA repair function in human cells that might encourage our efforts to establish a research program to relate DNA repair function to complex DNA repair genotype and ultimately to cancer risk of radiation exposure.

  10. 26 CFR 48.6421-2 - Credits or payments to ultimate purchasers of gasoline used in intercity, local, or school buses.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...payments to ultimate purchasers of gasoline used in intercity, local, or school...payments to ultimate purchasers of gasoline used in intercity, local, or school buses. (a) In general. If gasoline is used in an intercity...

  11. 26 CFR 48.6421-2 - Credits or payments to ultimate purchasers of gasoline used in intercity, local, or school buses.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...payments to ultimate purchasers of gasoline used in intercity, local, or school...payments to ultimate purchasers of gasoline used in intercity, local, or school buses. (a) In general. If gasoline is used in an intercity...

  12. 26 CFR 48.6421-2 - Credits or payments to ultimate purchasers of gasoline used in intercity, local, or school buses.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...payments to ultimate purchasers of gasoline used in intercity, local, or school...payments to ultimate purchasers of gasoline used in intercity, local, or school buses. (a) In general. If gasoline is used in an intercity...

  13. 26 CFR 48.6421-2 - Credits or payments to ultimate purchasers of gasoline used in intercity, local, or school buses.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...payments to ultimate purchasers of gasoline used in intercity, local, or school...payments to ultimate purchasers of gasoline used in intercity, local, or school buses. (a) In general. If gasoline is used in an intercity...

  14. Dynamic Aperture and Tolerances for PEP-X Ultimate Storage Ring Design

    SciTech Connect

    Borland, M.; /Argonne; Cai, Y.; Nosochkov, Y.; Wang, M.-H.; /SLAC; Hettel, R.O.; /SLAC

    2011-12-13

    A lattice for the PEP-X ultimate storage ring light source, having 11 pm-rad natural emittance at a beam energy of 4.5 GeV at zero current, using 90 m of damping wiggler and fitting into the existing 2.2-km PEP-II tunnel, has been recently designed. Such a low emittance lattice requires very strong sextupoles for chromaticity correction, which in turn introduce strong non-linear field effects that limit the beam dynamic aperture. In order to maximize the dynamic aperture we choose the cell phases to cancel the third and fourth order geometric resonances in each 8-cell arc. Four families of chromatic sextupoles and six families of geometric (or harmonic) sextupoles are added to correct the chromatic and amplitude-dependent tunes. To find the best settings of the ten sextupole families, we use a Multi-Objective Genetic Optimizer employing elegant to optimize the beam lifetime and dynamic aperture simultaneously. Then we evaluate dynamic aperture reduction caused by magnetic field multipole errors, magnet fabrication errors and misalignments. A sufficient dynamic aperture is obtained for injection, as well as workable beam lifetime.

  15. PEP-X: An Ultimate Storage Ring Based on Fourth-Order Geometric Achromats

    SciTech Connect

    Cai, Yunhai; Bane, Karl; Hettel, Robert; Nosochkov, Yuri; Wang, Min-Huey; /SLAC

    2012-04-06

    We have designed an 'ultimate' storage ring for the PEP-X light source that achieves the diffraction limited emittances (at 1.5 {angstrom}) of 12 pm-rad in both horizontal and vertical planes with a 4.5-GeV beam. These emittances include the contribution of intrabeam scattering at a nominal current of 200 mA in 3300 bunches. This quality beam in conjunction with a conventional 4-m undulator in a straight section can generate synchrotron radiation having a spectral brightness above 10{sup 22} [photons/s/mm{sup 2}/mrad{sup 2}/0.1% BW] at a 10 keV photon energy. The high coherence at the diffraction limit makes PEP-X competitive with 4th generation light sources based on an energy recovery linac. In addition, the beam lifetime is several hours and the dynamic aperture is large enough to allow off-axis injection. The alignment and stability tolerances, though challenging, are achievable. A ring with all these properties is only possible because of several major advances in mitigating the effects of nonlinear resonances.

  16. Effect of Load Rate on Ultimate Tensile Strength of Ceramic Matrix Composites at Elevated Temperatures

    NASA Technical Reports Server (NTRS)

    Choi, Sung R.; Gyekenyesi, John P.

    2001-01-01

    The strengths of three continuous fiber-reinforced ceramic composites, including SiC/CAS-II, SiC/MAS-5 and SiC/SiC, were determined as a function of test rate in air at 1100 to 1200 C. All three composite materials exhibited a strong dependency of strength on test rate, similar to the behavior observed in many advanced monolithic ceramics at elevated temperatures. The application of the preloading technique as well as the prediction of life from one loading configuration (constant stress-rate) to another (constant stress loading) suggested that the overall macroscopic failure mechanism of the composites would be the one governed by a power-law type of damage evolution/accumulation, analogous to slow crack growth commonly observed in advanced monolithic ceramics. It was further found that constant stress-rate testing could be used as an alternative to life prediction test methodology even for composite materials, at least for short range of lifetimes and when ultimate strength is used as the failure criterion.

  17. Ultimate thin vertical p-n junction composed of two-dimensional layered molybdenum disulfide.

    PubMed

    Li, Hua-Min; Lee, Daeyeong; Qu, Deshun; Liu, Xiaochi; Ryu, Jungjin; Seabaugh, Alan; Yoo, Won Jong

    2015-01-01

    Semiconducting two-dimensional crystals are currently receiving significant attention because of their great potential to be an ultrathin body for efficient electrostatic modulation, which enables to overcome the limitations of silicon technology. Here we report that, as a key building block for two-dimensional semiconductor devices, vertical p-n junctions are fabricated in ultrathin MoS2 by introducing AuCl3 and benzyl viologen dopants. Unlike usual unipolar MoS2, the MoS2 p-n junctions show ambipolar carrier transport, current rectification via modulation of potential barrier in films thicker than 8?nm and reversed current rectification via tunnelling in films thinner than 8?nm. The ultimate thinness of the vertical p-n homogeneous junctions in MoS2 is experimentally found to be 3?nm, and the chemical doping depth is found to be 1.5?nm. The ultrathin MoS2 p-n junctions present a significant potential of the two-dimensional crystals for flexible, transparent, high-efficiency electronic and optoelectronic applications. PMID:25800613

  18. Ultimate thin vertical p–n junction composed of two-dimensional layered molybdenum disulfide

    PubMed Central

    Li, Hua-Min; Lee, Daeyeong; Qu, Deshun; Liu, Xiaochi; Ryu, Jungjin; Seabaugh, Alan; Yoo, Won Jong

    2015-01-01

    Semiconducting two-dimensional crystals are currently receiving significant attention because of their great potential to be an ultrathin body for efficient electrostatic modulation, which enables to overcome the limitations of silicon technology. Here we report that, as a key building block for two-dimensional semiconductor devices, vertical p–n junctions are fabricated in ultrathin MoS2 by introducing AuCl3 and benzyl viologen dopants. Unlike usual unipolar MoS2, the MoS2 p–n junctions show ambipolar carrier transport, current rectification via modulation of potential barrier in films thicker than 8?nm and reversed current rectification via tunnelling in films thinner than 8?nm. The ultimate thinness of the vertical p–n homogeneous junctions in MoS2 is experimentally found to be 3?nm, and the chemical doping depth is found to be 1.5?nm. The ultrathin MoS2 p–n junctions present a significant potential of the two-dimensional crystals for flexible, transparent, high-efficiency electronic and optoelectronic applications. PMID:25800613

  19. Moisture absorption early postmortem predicts ultimate drip loss in fresh pork.

    PubMed

    Kapper, C; Walukonis, C J; Scheffler, T L; Scheffler, J M; Don, C; Morgan, M T; Forrest, J C; Gerrard, D E

    2014-02-01

    Water-holding capacity is the ability of meat to hold moisture and is subject to postmortem metabolism. The objective of this study was to characterize the loss of moisture from muscle postmortem and investigate whether these losses are useful in predicting the ultimate drip loss of fresh pork. Cotton-rayon absorptive-based devices were inserted in the longissimus dorsi muscles of pork carcasses (n = 51) postmortem and removed at various intervals for 24h. Greatest moisture absorption was observed at 105 min post exsanguination. Drip loss varied (0.6-15.3%) across carcasses. Individual absorption at 75 min correlated (r = 0.33) with final drip loss. Correlations improved using individual absorption values at 90 min (r = 0.48) and accumulated absorption values at 150 min (r = 0.41). Results show that significant moisture is lost from muscle tissue early postmortem and suggest that capture of this moisture may be useful in predicting final drip loss of fresh meat. PMID:24225387

  20. NDM-1, the ultimate promiscuous enzyme: substrate recognition and catalytic mechanism

    PubMed Central

    Kim, Youngchang; Cunningham, Mark A.; Mire, Joseph; Tesar, Christine; Sacchettini, James; Joachimiak, Andrzej

    2013-01-01

    The specter of a return to an era in which infectious disease looms as a significant threat to human health is not just hyperbole; there are serious concerns about the widespread overuse and misuse of antibiotics contributing to increased antibiotic resistance in pathogens. The recent discovery of a new enzyme, first identified in Klebsiella pneumoniae from a patient from New Delhi and denoted as NDM-1, represents an example of extreme promiscuity: It hydrolyzes and inactivates nearly all known ?-lactam-based antibiotics with startling efficiency. NDM-1 can utilize different metal cofactors and seems to exploit an alternative mechanism based on the reaction conditions. Here we report the results of a combined experimental and theoretical study that examines the substrate, metal binding, and catalytic mechanism of the enzyme. We utilize structures obtained through X-ray crystallography, biochemical assays, and numerical simulation to construct a model of the enzyme catalytic pathway. The NDM-1 enzyme interacts with the substrate solely through zinc, or other metals, bound in the active site, explaining the observed lack of specificity against a broad range of ?-lactam antibiotic agents. The zinc ions also serve to activate a water molecule that hydrolyzes the ?-lactam ring through a proton shuttle.—Kim, Y., Cunningham, M. A.; Mire, J., Tesar, C., Sacchettini, J., Joachimiak, A. NDM-1, the ultimate promiscuous enzyme: substrate recognition and catalytic mechanism. PMID:23363572

  1. Reproductive skew in female common marmosets: what can proximate mechanisms tell us about ultimate causes?

    PubMed

    Saltzman, Wendy; Digby, Leslie J; Abbott, David H

    2009-02-01

    Common marmosets are cooperatively breeding monkeys that exhibit high reproductive skew: most subordinate females fail to reproduce, while others attempt to breed but produce very few surviving infants. An extensive dataset on the mechanisms limiting reproduction in laboratory-housed and free living subordinate females provides unique insights into the causes of reproductive skew. Non-breeding adult females undergo suppression of ovulation and inhibition of sexual behaviour; however, they receive little or no aggression or mating interference by dominants and do not exhibit behavioural or physiological signs of stress. Breeding subordinate females receive comparable amounts of aggression to non-breeding females but are able to conceive, gestate and lactate normally. In groups containing two breeding females,however, both dominant and subordinate breeders kill one another's infants. These findings suggest that preconception reproductive suppression is not imposed on subordinate females by dominants, at a proximate level, but is instead self-imposed by most subordinates, consistent with restraint models of reproductive skew. In contrast to restraint models, however, this self-suppression probably evolved not in response to the threat of eviction by dominant females but in response to the threat of infanticide. Thus,reproductive skew in this species appears to be generated predominantly by subordinate self-restraint, in a proximate sense, but ultimately by dominant control over subordinates' reproductive attempts. PMID:18945663

  2. B.S. to Ph.D. M.S. to Ph.D. Dual-title Ph.D.

    E-print Network

    -centered care For More Information Marsha Freije, M.S.N. Graduate Adviser College of Nursing The PennsylvaniaPh.D. in Nursing B.S. to Ph.D. · M.S. to Ph.D. Dual-title Ph.D. (Nursing and Bioethics) Become a part of Penn State's vibrant research enterprise in nursing science Partner with nationally renowned

  3. Activation of intra-epithelial lymphocytes; their morphology, marker expression and ultimate fate.

    PubMed

    Ogata, Masaki; Ota, Yuta; Nanno, Masanobu; Suzuki, Ryuji; Itoh, Tsunetoshi

    2014-04-01

    Intraepithelial lymphocytes (IELs) have been considered to play a key role in the defense system of the small intestine. Its mechanism has not been made sufficiently clear. Studies on IELs have been extremely limited to functions of ?? T-cell receptor (??TCR) IELs (??-IELs). Since, in the mouse duodenum and jejunum, ??-IELs consist 75 % of IELs, it thus would be inappropriate to argue the mechanism without extensive discussions over the functions of ??-IELs. In previous studies, we found that the anti-CD3 monoclonal antibody (mAb) injection induced DNA fragmentation in intestinal epithelial cells (IECs) and DNA repair immediately after, that these responses were reproduced by anti-??TCR mAb not by anti-??TCR mAb and that the DNA fragmentation was induced by Granzyme B secreted by IELs, totally independent of Perforin. To further explore the functions of IELs in situ, we undertook experiments exclusively focused on IELs, on their changes and ultimate fate after the stimulation in mouse in vivo system. The current study demonstrated that the injected anti-CD3 mAb bound to CD3 on IELs, that the mAb activated ??-IELs, leading to their degranulation, that changes occurred irreversibly in IELs and finally that activated IELs died in situ. ??-IELs could be considered to respond to various stimulations most likely without the need of accessory cells ("always ready for rapid response"), to die in situ ("disposable") and thus to respond to the stimulation only once ("a one-shot responder"). These characteristics of ??-IELs are important to further elucidate the functions of ??-IELs in the intestinal defense system. PMID:24493637

  4. Optical and magneto-optical characteristics of sol-gel derived bismuth-doped iron garnets (using the Ultimate Elipsometer)

    NASA Astrophysics Data System (ADS)

    Simpson, John T.; Teowee, Gimtong T.; Mansuripur, Masud

    1995-09-01

    This paper gives optical and magneto-optical (MO) characterization results (index of refraction, absorption coefficient, thickness, Faraday rotation, and coercivity) obtained from bismuth-doped dysprosium iron garnet samples. These samples were prepared under differing sol-gel processing conditions and were characterized using the Ultimate Ellipsometer. After first describing the design and measurement capabilities of the Ultimate Ellipsometer (Simpson, 1995), we then describe how various processing parameters, such as spin speed and annealing temperatures, affect the bismuth iron garnet material's optical and MO properties.

  5. Administration Donald B. Thomason, PhD

    E-print Network

    Cui, Yan

    , PhD Director, Pharmacology Edwards Park, PhD Director, Laboratory Research & Management Leonard Lothstein, PhD Director, Nursing Science Carolyn Graff, PhD, RN Director, Pharmaceutical Sciences Duane D, Pharmaceutical Sciences, and Speech and Hearing Science. The college is located on the Health Science Center

  6. Radka Stoyanova, PhD

    Cancer.gov

    Dr. Radka Stoyanova, PhD has extensive background in developing approaches to best utilize imaging techniques in cancer research, diagnosis and treatment, as well as in developing approaches for the analysis, mining, and interpretation of "big data" generated by high-throughput approaches such as genomics, proteomics, and metabolomics. She received her Masters Degree in Mathematics from the University of Sofia, Bulgaria. Dr. Stoyanova obtained her doctoral training and PhD degree at the Imperial College London, under the mentorship of Profs.

  7. pH Meter Calibration

    NSDL National Science Digital Library

    The North Carolina Community College System BioNetwork's interactive eLearning tools (IETs) are reusable chunks of training that can be deployed in a variety of courses or training programs. IETs are designed to enhance, not replace hands-on training. Learners are able to enter a hands-on lab experience better prepared and more confident. This particular IET delves into pH Meter Calibration, where visitors practice performing a three point calibration of a pH meter using buffer solutions.

  8. Water quality variation and clam growth: Is pH really a non-issue in estuaries?

    Microsoft Academic Search

    Amy H. Ringwood; Charles J. Keppler

    2002-01-01

    A tandem deployment system was used to critically evaluate relationships between important water chemistry parameters (pH,\\u000a salinity, dissolved oxygen) and biotic performance based on clam growth. The effects of environmental conditions on growth\\u000a of juvenile clams,Mercenaria mercenaria, were determined after 7-day field deployments in cages at reference sites from 1998 to 2000. Continuous measurements of\\u000a the overlying water chemistry parameters

  9. Sashwati Roy, PhD

    Cancer.gov

    Dr. Sashwati Roy is an Associate Professor of Surgery and Director of the Laser Capture Molecular Core at The Ohio State University, Columbus, Ohio. In 1994 she received her PhD degree in Physiology and Environmental Sciences and later completed her postdoctoral training at the University of California, Berkeley. Dr.

  10. Karl Krueger, PhD

    Cancer.gov

    Dr. Karl Krueger received a PhD in biochemistry from Vanderbilt University and continued his research training at NIH as a postdoctoral fellow before joining the faculty at Georgetown University School of Medicine. His research throughout this period focused on different aspects of drug receptors and their role in the nervous system.

  11. Proximate and ultimate causes of adoption in ring-billed gulls.

    PubMed

    Brown

    1998-12-01

    From 1987 to 1994, the annual frequency of adoption by breeding pairs at a Lake Erie ring-billed gull, Larus delawarensis, colony ranged from 3 to 37% (average 8%/year, N=7 years) and, on average, foster parents raised 0.5 fewer of their own chicks to fledging than pairs that did not adopt. The key evolutionary question is: why do some individuals apparently suffer the costs associated with a behaviour that appears to enhance the fitness of others? From 1992 to 1995, I investigated the proximate and ultimate causes of adoption in ring-billed gulls from the perspectives of both the foster parents and adopted chicks, and tested predictions that differentiated between various competing adaptive and nonadaptive hypotheses that have been proposed to explain it. While I was able to demonstrate a breeding cost, I failed to identify any benefits to foster parents. Thus, the adaptive hypotheses that rely on the foster parents benefiting were not supported (e.g. kin selection, reciprocal altruism, acquisition of parenting experience). From the foster parent's perspective, adoption was mediated through errors in parent-offspring recognition. Under natural conditions, most fostering pairs were tending small chicks (<6 days old) at the time of adoptions; in chick-transfer experiments, resident parents did not discriminate against foreign chicks until their own chicks were 7-9 days old. Chicks (N=25) that subsequently abandoned their natal nests were lighter, and grew at a slower rate, than chicks that survived to fledging in their home broods. Thus, departing chicks were at a survival disadvantage in their home broods. Chicks that gained acceptance into foreign broods where they were older/larger than the resident chicks realized high survival at the expense of their foster siblings and parents. Based upon individual growth rates and the corresponding survival probabilities, disadvantaged chicks approximately doubled their survival chances through foster care. Why has selection not eliminated adoption? I argue that adoption is an evolutionary arms race between the two principle actor groups; disadvantaged chicks, which benefit through foster care, and host parents, which avoid providing foster care (e.g. infanticide). In ring-billed gulls, selection has failed to eliminate adoption because the long-term reproductive cost (estimated at 4%, this study) of an occasional adoption is probably offset by the relatively higher costs associated with stricter kin discrimination mechanisms (e.g. parental infanticide). (c) 1998 The Association for the Study of Animal Behaviour. PMID:9933551

  12. Proximate and Ultimate Compositional Changes in Corn Stover during Torrefaction using Thermogravimetric Analyzer and Microwaves

    SciTech Connect

    Jaya Shankar Tumuluru

    2012-07-01

    Abstract The world is currently aiming to reduce the dependence on fossil fuels and to achieve a sustainable renewable supply. Renewable energies represent a diversity of energy sources that can help to maintain the equilibrium of different ecosystems. Among the various sources of renewable energy, biomass is considered carbon neutral because the carbon dioxide released during its use is already part of the carbon cycle. Increasing the use of biomass for energy can help to reduce the negative CO2 impact on the environment and help meet the targets established in the Kyoto Protocol. Energy from biomass can be produced from different processes, including thermochemical (direct combustion, gasification, and pyrolysis), biological (anaerobic digestion, fermentation), or chemical (esterification) technologies. There are lot challenges in using biomass for energy applications. To name few low bulk density, high moisture content, irregular size and shape, hydrophilic nature and low calorific value. In commercial scale operation large quantities of biomass are needed and this will create problems associated with storage and transportation. Furthermore, grinding raw biomass with high moisture content is very challenging as there are no specific equipments and can increase the costs and in some cases it becomes highly impossible. All of these drawbacks led to development of some pretreatment techniques to make biomass more suitable for fuel applications. One of the promising techniques is torrefaction. Torrefaction is heating the biomass in an inert environment or reduced environment. During torrefaction biomass losses moisture, becomes more brittle and with increased energy density values. There are different techniques used for torrefaction of biomass. Fixed bed, bubbling sand bed and moving bed are the most common ones used. The use of microwaves for torrefaction purposes has not been explored. In the present study we looked into the torrefaction of biomass using the regular and microwaves and their effect on proximate and ultimate composition. Studies indicated that microwave torrefaction is a good way to torrefy the biomass in short periods of time. A maximum calorific value of 21 MJ/kg is achievable at 6 min residence time compared to 15 min using the dry torrefaction technique. Increasing the residence time increased the carbon content where a maximum carbon content of 52.20 % was achievable at lower residence time. The loss of volatiles is comparatively lower compared to dry torrefaction technique. Moisture content of microwave torrefied samples was in between 2-2.5 % (w.b).

  13. Predictors of binge drinking in adolescents: ultimate and distal factors - a representative study

    PubMed Central

    2012-01-01

    Background As epidemiological surveys have shown, binge drinking is a constant and wide-spread problem behavior in adolescents. It is not rare to find that more than half of all adolescents engage in this behavior when assessing only the last 4 weeks of time independent of the urbanity of the region they live in. There have been several reviews on predictors of substance consumption in adolescents in general, but there has been less high quality research on predictors of binge drinking, and most studies have not been theoretically based. The current study aimed to analyze the ultimate and distal factors predicting substance consumption according to Petraitis' theory of triadic influence. We assessed the predictive value of these factors with respect to binge drinking in German adolescents, including the identification of influence direction. Methods In the years 2007/2008, a representative written survey of N = 44,610 students in the 9th grade of different school types in Germany was carried out (net sample). The return rate of questionnaires was 88% regarding all students whose teachers or school directors had agreed to participate in the study. In this survey, prevalence of binge drinking was investigated as well as potential predictors from the social/interpersonal, the attitudinal/environmental, and the intrapersonal fields (3 factors of Petraitis). In a multivariate logistic regression analysis, these variables were included after testing for multicollinearity in order to assess their ability to predict binge drinking. Results Prevalence of binge drinking in the last 30 days was 52.3% for the surveyed adolescents with a higher prevalence for boys (56.9%) than for girls (47.5%). The two most influential factors found to protect against binge drinking with p < .001 were low economic status and importance of religion. The four most relevant risk factors for binge drinking (p < .001) were life-time prevalence of school absenteeism/truancy, academic failure, suicidal thoughts, and violence at school in the form of aggressive behavior of teachers. The model of Petraitis was partly confirmed for Binge Drinking in German adolescents and the direction of influence factors was clarified. Conclusions Whereas some of the risk and protective factors for binge drinking are not surprising since they are known for substance abuse in general, there are two points that could be targeted in interventions that do not focus on adolescents alone: (a) training teachers in positive, reassuring behavior and constructive criticism and (b) a focus on high risk adolescents either because they have a lack of coping strategies when in a negative mood or because of their low academic achievement in combination with absenteeism from school. PMID:22469235

  14. Ultimate Attainment in Late Second Language Acquisition: Phonetic and Grammatical Challenges in Advanced Dutch-English Bilingualism

    ERIC Educational Resources Information Center

    Schmid, Monika S.; Gilbers, Steven; Nota, Amber

    2014-01-01

    The present article provides an exploration of ultimate attainment in second language (L2) and its limitations. It is argued that the question of maturational constraints can best be investigated when the reference population is bilingual and exposed on a regular basis to varieties of their first language (L1) that show cross-linguistic influence.…

  15. Electronic copy available at: http://ssrn.com/abstract=2065816 Ultimate Ownership Structure and Bank Regulatory Capital Adjustment

    E-print Network

    Boyer, Edmond

    Electronic copy available at: http://ssrn.com/abstract=2065816 1 Ultimate Ownership Structure-collected dataset on detailed control and ownership characteristics of 405 European commercial banks to estimate an ownership-augmented capital adjustment model over the 2003-2010 period. We find no differences in adjustment

  16. Background: In order to stave off deleterious complications of the disease, the ultimate task for people with diabetes is to

    E-print Network

    tolerance test for diabetes and is the optimal postprandial regulation that can be achieved, the ultimate task for people with diabetes is to maintain their blood glucose in euglycemic range. Despite anesthetized diabetic pigs, with carbohydrate loads simulated by intravenous glucose administration through ear

  17. Education-Based Incarceration and Recidivism: The Ultimate Social Justice Crime Fighting Tool. Educational Leadership for Social Justice

    ERIC Educational Resources Information Center

    Fitch, Brian D., Ed.; Normore, Anthony H., Ed.

    2012-01-01

    Education-Based Incarceration and Recidivism: The Ultimate Social Justice Crime Fighting Tool takes a penetrating look at the needs and challenges of society's disenfranchised jail populations. It is incumbent to encourage public awareness of the causes that underlie the destructive cycles plaguing these populations, including the abuse and…

  18. The effect of the intermediate principal stress on the ultimate bearing capacity of a foundation on rock masses

    Microsoft Academic Search

    Xiao-Ping Zhou; Hai-Qing Yang; Yong-Xing Zhang; Mao-Hong Yu

    2009-01-01

    In this paper, the strength envelope of rock masses is considered to follow a non-linear unified strength criterion that considers the effect of the intermediate principal stress. A unified slip line method for resolving the differential equation system that governs the stress field is established to research the ultimate bearing capacity, which can be adapted for a wide variety of

  19. ARSENIC (III) METHYLATED SPECIES REACT WITH DNA DIRECTLY AND COULD BE PROXIMATED/ULTIMATE GENOTOXIC FORMS OF ARSENIC

    EPA Science Inventory

    ARSENIC(III) METHYLATED SPECIES REACT WITH DNA DIRECTL Y AND COULD BE PROXIMATE/ULTIMATE GENOTOXIC FORMS OF ARSENIC Arsenite and arsenate (iAs, inorganic arsenic) have been thought to act as genotoxicants without reacting directly with DNA; neither iAs nor As(V) m...

  20. PROXIMATE OR ULTIMATE GENOTOXIC FORMS OF ARSENIC: METHYLATED ARSENIC(III) SPECIES THAT REACT DIRECTLY WITH DNA

    EPA Science Inventory

    PROXIMATE OR ULTIMATE GENOTOXIC FORMS OF ARSENIC: METHYLATED ARSENIC(III) SPECIES THAT REACT DIRECTL Y WITH DNA. Abstract: Although inorganic arsenic (iAs), arsenite or arsenate, is genotoxic, there has been no demonstration that iAs or a methylated metabolite...

  1. An ultrasensitive method of real time pH monitoring with complementary metal oxide semiconductor image sensor.

    PubMed

    Devadhasan, Jasmine Pramila; Kim, Sanghyo

    2015-02-01

    CMOS sensors are becoming a powerful tool in the biological and chemical field. In this work, we introduce a new approach on quantifying various pH solutions with a CMOS image sensor. The CMOS image sensor based pH measurement produces high-accuracy analysis, making it a truly portable and user friendly system. pH indicator blended hydrogel matrix was fabricated as a thin film to the accurate color development. A distinct color change of red, green and blue (RGB) develops in the hydrogel film by applying various pH solutions (pH 1-14). The semi-quantitative pH evolution was acquired by visual read out. Further, CMOS image sensor absorbs the RGB color intensity of the film and hue value converted into digital numbers with the aid of an analog-to-digital converter (ADC) to determine the pH ranges of solutions. Chromaticity diagram and Euclidean distance represent the RGB color space and differentiation of pH ranges, respectively. This technique is applicable to sense the various toxic chemicals and chemical vapors by situ sensing. Ultimately, the entire approach can be integrated into smartphone and operable with the user friendly manner. PMID:25597802

  2. Stella Koutros, Ph.D.

    Cancer.gov

    Dr. Koutros received her M.P.H. and Ph.D. in epidemiology from Yale University. She completed her doctoral work through the Yale-NCI partnership training program in cancer epidemiology, conducting research in the Occupational and Environmental Epidemiology Branch (OEEB). In 2008, upon completion of her doctorate she became a fellow in OEEB; she was appointed to the position of tenure-track investigator in 2015.

  3. Christos Patriotis, PhD

    Cancer.gov

    Dr. Christos Patriotis obtained his MSc in Biochemistry from the University of Sofia, Bulgaria in 1985 and his PhD in Molecular Biology from the Bulgarian Academy of Sciences in 1990. Postdoctoral training focused on signal transduction and tumor cell biology. He joined the faculty at Fox Chase Cancer Center in 1998; his research was directed toward understanding mechanisms of breast and ovarian cancer pathogenesis and identification of biomarkers associated with the early stages of the two types of cancer.

  4. Richard Mazurchuk, PhD

    Cancer.gov

    Dr. Richard Mazurchuk received a BS in Physics and MS and PhD in Biophysics from SUNY Buffalo. His research focused on developing novel multi-modality imaging techniques, contrast (enhancing) agents and methods to assess the efficacy of experimental therapeutics. He subsequently joined the faculty of SUNY Buffalo School of Medicine and Roswell Park Cancer Institute attaining the rank of Assoc Prof in the Departments of Diagnostic Imaging and Molecular and Cellular Biochemistry and Biophysics.

  5. PhET: The Ramp

    NSDL National Science Digital Library

    In this simulation, students push common items of varying masses up an incline to explore the relationship of applied force, work, and energy. They control the angle of the ramp, friction, and amount of applied force. With a mouse click, they can also view detailed graphs of work and energy. This item is part of a larger collection of simulations developed by the Physics Education Technology project (PhET). The simulations are animated, interactive, and game-like environments.

  6. The pH of antiseptic cleansers

    PubMed Central

    Kulthanan, Kanokvalai; Varothai, Supenya; Nuchkull, Piyavadee

    2014-01-01

    Background Daily bathing with antiseptic cleansers are proposed by some physicians as an adjunctive management of atopic dermatitis (AD). As atopic skin is sensitive, selection of cleansing products becomes a topic of concern. Objective Our purpose is to evaluate the pH of various antiseptic body cleansers to give an overview for recommendation to patients with AD. Methods Commonly bar and liquid cleansers consisted of antiseptic agents were measured for pH using pH meter and pH-indicator strips. For comparison, mild cleansers and general body cleansers were also measured. Results All cleansing bars had pH 9.8-11.3 except syndet bar that had neutral pH. For liquid cleansers, three cleansing agents had pH close to pH of normal skin, one of antiseptic cleansers, one of mild cleansers and another one of general cleansers. The rest of antiseptic cleansers had pH 8.9-9.6 while mild cleansers had pH 6.9-7.5. Syndet liquid had pH 7 and general liquid cleansers had pH 9.6. Conclusion The pH of cleanser depends on composition of that cleanser. Adding antiseptic agents are not the only factor determining variation of pH. Moreover, benefit of antiseptic properties should be considered especially in cases of infected skin lesions in the selection of proper cleansers for patients with AD. PMID:24527408

  7. (August 29, 2014) Neuroscience Ph.D.

    E-print Network

    HANDBOOK (August 29, 2014) Neuroscience Ph.D. Program Daniel Tranel, PhD Program Director Michael ...................................................................................................4 B. Neuroscience Program Graduate Research Assistantships .................................5 C ......................................................................................................................7 A. Required Core Neuroscience Courses

  8. (November 20, 2014) Neuroscience Ph.D.

    E-print Network

    HANDBOOK (November 20, 2014) Neuroscience Ph.D. Program Daniel Tranel, PhD Program Director Michael ...................................................................................................4 B. Neuroscience Program Graduate Research Assistantships .................................5 C ......................................................................................................................7 A. Required Core Neuroscience Courses

  9. Coping with PH over the Long Term

    MedlinePLUS

    ... Young Adult Issues Dating and Relationships College and Scholarships Family Planning Considering Adoption with PH The Adoption ... Young Adult Issues Dating and Relationships College and Scholarships Family Planning Considering Adoption with PH The Adoption ...

  10. Coral resilience to ocean acidification and global warming through pH up-regulation

    NASA Astrophysics Data System (ADS)

    McCulloch, Malcolm; Falter, Jim; Trotter, Julie; Montagna, Paolo

    2012-08-01

    Rapidly rising levels of atmospheric CO2 are not only causing ocean warming, but also lowering seawater pH hence the carbonate saturation state of the oceans, on which many marine organisms depend to calcify their skeletons. Using boron isotope systematics, we show how scleractinian corals up-regulate pH at their site of calcification such that internal changes are approximately one-half of those in ambient seawater. This species-dependent pH-buffering capacity enables aragonitic corals to raise the saturation state of their calcifying medium, thereby increasing calcification rates at little additional energy cost. Using a model of pH regulation combined with abiotic calcification, we show that the enhanced kinetics of calcification owing to higher temperatures has the potential to counter the effects of ocean acidification. Up-regulation of pH, however, is not ubiquitous among calcifying organisms; those lacking this ability are likely to undergo severe declines in calcification as CO2 levels increase. The capacity to up-regulate pH is thus central to the resilience of calcifiers to ocean acidification, although the fate of zooxanthellate corals ultimately depends on the ability of both the photosymbionts and coral host to adapt to rapidly increasing ocean temperatures.

  11. A Simple Limit Equilibrium Approach for Calculation of Ultimate Bearing Capacity of Shallow Foundations on Two-Layered Granular Soils

    Microsoft Academic Search

    Mahmoud Ghazavi; Amir Hossein Eghbali

    2008-01-01

    The bearing capacity of shallow foundations in a non-homogeneous soil profile has been a challenging task in geotechnical\\u000a engineering. In this paper, a limit equilibrium method is used for calculating bearing capacity factors of shallow foundations\\u000a constructed on a two-layered granular soil profile. The main objective has been to determine the ultimate bearing capacity\\u000a computed from equivalent bearing capacity factors

  12. University College Dublin PhD Scholarships

    E-print Network

    University College Dublin PhD Scholarships UCD Michael Smurfit Graduate Business School invites excellent applications for a number of PhD scholarships starting in September 2014. This provides four years of support for full-time PhD study. The Scholarships are open to full-time EU and non-EU students

  13. Inexpensive and Disposable pH Electrodes

    ERIC Educational Resources Information Center

    Goldcamp, Michael J.; Conklin, Alfred; Nelson, Kimberly; Marchetti, Jessica; Brashear, Ryan; Epure, Emily

    2010-01-01

    Inexpensive electrodes for the measurement of pH have been constructed using the ionophore tribenzylamine for sensing H[superscript +] concentrations. Both traditional liquid-membrane electrodes and coated-wire electrodes have been constructed and studied, and both exhibit linear, nearly Nernstian responses to changes in pH. Measurements of pH

  14. Soil pH and Fertilizers

    NSDL National Science Digital Library

    This Web site by the Mississippi State University Extension Service discusses why fertilizers are added to soils. The Web site begins by introducing the concept of the pH of the soil and how nutrients are affected by this pH level. Students can then learn about the pH logarithmic scale and about the factors that affect soil pH. At the end of the site, users will find a clear and concise table concerning different fertilizer materials characteristics including their speed of reaction and effect on pH in soils.

  15. Soils - Part 4: Soil pH

    NSDL National Science Digital Library

    Soil pH is defined and its implications for crop production are described in this lesson. How are soil pH and buffer pH determined? How are these assessments used in lime recommendations? The factors that influence pH variations in soils, the chemistry involved in changing the pH of a soil, and the benefits associated with liming acid soils will be discussed.[This lesson, as well as the other nine lessons in the Soils series, is taken from the "Soils Home Study Course," published in 1999 by the University of Nebraska Cooperative Extension.

  16. Stability and performance of silica-based alkyl bonded-phase HPLC column packings with pH > 8 mobile phases

    SciTech Connect

    Kirkland, J.J. [Rockland Technologies, Inc., Newport, DE (United States)

    1995-12-01

    Certain HPLC separations are best performed with high pH (pH >8) mobile phases where basic compounds may not be fully protonated. However, the traditional recommendation for silica-based HPLC column packings is that they not be used with mobile phases above pH 8 because of rapid packed-bed degradation by solubility of the silica support. Studies now have shown that packings with certain types of silica supports and bonded phases can be employed successfully for routine separations with mobile phases of at least pH 9. Column packing lifetime with higher pH mobile phases also can be extended by proper choice of buffer type. Silica support solubility (and ultimate column life) is significantly influenced by the nature of both the anions and cations used in the mobile phase buffer. Even at pH 7, some alkyl bonded phase packings show poor lifetime with higher concentrations of certain buffers, especially at elevated temperatures. Column temperature and buffer concentration also greatly affect silica support solubility and ultimate column lifetime. Findings from this study should assist in the development of more rugged HPLC methods for routine applications.

  17. Functional photoacoustic microscopy of pH

    NASA Astrophysics Data System (ADS)

    Chatni, M. Rameez; Yao, Junjie; Danielli, Amos; Favazza, Christopher P.; Maslov, Konstantin I.; Wang, Lihong V.

    2012-02-01

    pH is a tightly regulated indicator of metabolic activity. In mammalian systems, imbalance of pH regulation may result from or result in serious illness. Even though the regulation system of pH is very robust, tissue pH can be altered in many diseases such as cancer, osteoporosis and diabetes mellitus. Traditional high-resolution optical imaging techniques, such as confocal microscopy, routinely image pH in cells and tissues using pH sensitive fluorescent dyes, which change their fluorescence properties with the surrounding pH. Since strong optical scattering in biological tissue blurs images at greater depths, high-resolution pH imaging is limited to penetration depths of 1mm. Here, we report photoacoustic microscopy (PAM) of commercially available pH-sensitive fluorescent dye in tissue phantoms. Using both opticalresolution photoacoustic microscopy (OR-PAM), and acoustic resolution photoacoustic microscopy (AR-PAM), we explored the possibility of recovering the pH values in tissue phantoms. In this paper, we demonstrate that PAM was capable of recovering pH values up to a depth of 2 mm, greater than possible with other forms of optical microscopy.

  18. Material Properties Test to Determine Ultimate Strain and True Stress-True Strain Curves for High Yield Steels

    SciTech Connect

    K.R. Arpin; T.F. Trimble

    2003-04-01

    This testing was undertaken to develop material true stress-true strain curves for elastic-plastic material behavior for use in performing transient analysis. Based on the conclusions of this test, the true stress-true strain curves derived herein are valid for use in elastic-plastic finite element analysis for structures fabricated from these materials. In addition, for the materials tested herein, the ultimate strain values are greater than those values cited as the limits for the elastic-plastic strain acceptance criteria for transient analysis.

  19. The pH Factor

    NSDL National Science Digital Library

    The Miami Museum of Science's learning site, The pH Factor, gives teachers a fun and interactive way to teach elementary and middle school students some basics of science. Material is divided into seven learning areas: excite, explore, explain, expand, extend, exchange, and examine. Each contains an interactive screen that can be used directly in the classroom and lesson plans that correspond with each subject. For example, the excite area contains the "tasting tongue" that, when clicked, shows the location on the tongue where you taste bitter or sour things. The site's teaching style is based on the proposition that learners need to build their own understanding of new ideas. The unique material that is offered on this site provides educators with an excellent alternative for teaching these sometimes difficult concepts to grade school students.

  20. Sub-40nm V-groove MOSFETs J. Appenzeller'., R. Martel', Ph. Avouris", J. Knoch+, Y. Lut, K.L. Wangt, J. Scholvint, J.A. del Alamot, P. Rice**

    E-print Network

    del Alamo, Jesús A.

    Sub-40nm V-groove MOSFETs J. Appenzeller'., R. Martel', Ph. Avouris", J. Knoch+, Y. Lut, K.L. Wangt In past years opinions about the ultimate scaling limits of MOSFETs have often been revised length regime.'-' The question of how far the reduction of MOSFET size can be driven - while obtaining

  1. Pyrite oxidation at circumneutral pH

    Microsoft Academic Search

    C. O Moses; J. S Herman

    1991-01-01

    Previous studies of pyrite oxidation kinetics have concentrated primarily on the reaction at low pH, where Fe(III) has been assumed to be the dominant oxidant. Studies at circumneutral pH, necessitated by effective pH buffering in some pyrite oxidation systems, have often implicitly assumed that the dominant oxidant must be dissolved oxygen (DO), owing to the diminished solubility of Fe(III). In

  2. Middle School and pH?

    NSDL National Science Digital Library

    Susan Herricks

    2007-02-01

    A local middle school requested that the Water Center of Advanced Materials for Purification of Water With Systems (WaterCAMPWS), a National Science Foundation Science and Technology Center, provide an introduction to pH for their seventh-grade water-based service learning class. As a result, the grade-appropriate, hands-on laboratory, "Creating the pH Scale" was developed to help students grasp the fundamentals of pH.

  3. Anthropogenic carbon and ocean pH

    Microsoft Academic Search

    K. Caldeira; Michael E. Wickett

    2003-01-01

    ocean 1 with potentially adverse consequences for marine biota 2-4 . We quantify pH changes that may result from continued release of fossil-fuel CO 2 to the atmosphere, and compare these with pH changes inferred from geological and historical records. We conclude that releasing fossil-fuel CO 2 to the atmosphere over several centuries may result in ocean pH changes greater

  4. pH Meter probe assembly

    DOEpatents

    Hale, Charles J. (San Jose, CA)

    1983-01-01

    An assembly for mounting a pH probe in a flowing solution, such as a sanitary sewer line, which prevents the sensitive glass portion of the probe from becoming coated with grease, oil, and other contaminants, whereby the probe gives reliable pH indication over an extended period of time. The pH probe assembly utilizes a special filter media and a timed back-rinse feature for flushing clear surface contaminants of the filter. The flushing liquid is of a known pH and is utilized to check performance of the probe.

  5. pH Meter probe assembly

    DOEpatents

    Hale, C.J.

    1983-11-15

    An assembly for mounting a pH probe in a flowing solution, such as a sanitary sewer line, which prevents the sensitive glass portion of the probe from becoming coated with grease, oil, and other contaminants, whereby the probe gives reliable pH indication over an extended period of time. The pH probe assembly utilizes a special filter media and a timed back-rinse feature for flushing clear surface contaminants of the filter. The flushing liquid is of a known pH and is utilized to check performance of the probe. 1 fig.

  6. UNIVERSITY of PENNSYLVANIA Ph.D. PROGRAM

    E-print Network

    Carpick, Robert W.

    UNIVERSITY of PENNSYLVANIA Ph.D. PROGRAM GUIDELINES FOR GRADUATE STUDY September 2013 Mechanical Engineering and Applied Mechanics School of Engineering and Applied Science University of Pennsylvania 229

  7. UNIVERSITY of PENNSYLVANIA Ph.D. PROGRAM

    E-print Network

    Carpick, Robert W.

    UNIVERSITY of PENNSYLVANIA Ph.D. PROGRAM GUIDELINES FOR GRADUATE STUDY September 2009 Mechanical Engineering and Applied Mechanics School of Engineering and Applied Science University of Pennsylvania 229

  8. UNIVERSITY of PENNSYLVANIA Ph.D. PROGRAM

    E-print Network

    Carpick, Robert W.

    UNIVERSITY of PENNSYLVANIA Ph.D. PROGRAM GUIDELINES FOR GRADUATE STUDY September 2010 Mechanical Engineering and Applied Mechanics School of Engineering and Applied Science University of Pennsylvania 229

  9. UNIVERSITY of PENNSYLVANIA Ph.D. PROGRAM

    E-print Network

    Carpick, Robert W.

    UNIVERSITY of PENNSYLVANIA Ph.D. PROGRAM GUIDELINES FOR GRADUATE STUDY September 2011 Mechanical Engineering and Applied Mechanics School of Engineering and Applied Science University of Pennsylvania 229

  10. UNIVERSITY of PENNSYLVANIA Ph.D. PROGRAM

    E-print Network

    Carpick, Robert W.

    UNIVERSITY of PENNSYLVANIA Ph.D. PROGRAM GUIDELINES FOR GRADUATE STUDY September 2012 Mechanical Engineering and Applied Mechanics School of Engineering and Applied Science University of Pennsylvania 229

  11. Cementitious porous pavement in stormwater quality control: pH and alkalinity elevation.

    PubMed

    Kuang, Xuheng; Sansalone, John

    2011-01-01

    A certain level of alkalinity acts as a buffer and maintains the pH value in a stable range in water bodies. With rapid urban development, more and more acidic pollutants flow to watersheds with runoff and drop alkalinity to a very low level and ultimately degrade the water environment. Cementitious porous pavement is an effective tool for stormwater acidic neutralization. When stormwater infiltrates cement porous pavement (CPP) materials, alkalinity and pH will be elevated due to the basic characteristics of cement concrete. The elevated alkalinity will neutralize acids in water bodies and maintain the pH in a stable level as a buffer. It is expected that CPP materials still have a certain capability of alkalinity elevation after years of service, which is important for CPP as an effective tool for stormwater management. However, few previous studies have reported on how CPP structures would elevate runoff alkalinity and pH after being exposed to rainfall-runoff for years. In this study, three groups of CPP specimens, all exposed to rainfall-runoff for 3 years, were used to test the pH and alkalinity elevation properties. It was found that runoff pH values were elevated from 7.4 to the range of 7.8-8.6 after infiltrating through the uncoated specimens, and from 7.4 to 8.5-10.7 after infiltrating through aluminum-coated specimens. Runoff alkalinity elevation efficiencies are 11.5-14.5% for uncoated specimens and 42.2% for coated specimens. The study shows that CPP is an effective passive unit operation for stormwater acid neutralization in our built environment. PMID:22049729

  12. Effect of External pH on the Internal pH of Chlorella saccharophila1

    PubMed Central

    Gehl, Katharina A.; Colman, Brian

    1985-01-01

    The overall internal pH of the acid-tolerant green alga, Chlorella saccharophila, was determined in the light and in the dark by the distribution of 5,5-dimethyl-2-[14C]oxazolidine-2,4-dione ([14C]DMO) or [14C]benzoic acid ([14C]BA) between the cells and the surrounding medium. [14C]DMO was used at external pH of 5.0 to 7.5 while [14C]BA was used in the range pH 3.0 to pH 5.5. Neither compound was metabolized by the algal cells and intracellular binding was minimal. The internal pH of the algae obtained with the two compounds at external pH values of 5.0 and 5.5 were in good agreement. The internal pH of C. saccharophila remained relatively constant at pH 7.3 over the external pH range of pH 5.0 to 7.5. Below pH 5.0, however, there was a gradual decrease in the internal pH to 6.4 at an external pH of 3.0. The maintenance of a constant internal pH requires energy and the downward drift of internal pH with a drop in external pH may be a mechanism to conserve energy and allow growth at acid pH. PMID:16664162

  13. Bruising in Slaughter Cattle and Its Relationship with Creatine Kinase Levels and Beef Quality as Affected by Animal Related Factors

    PubMed Central

    Mpakama, T.; Chulayo, A. Y.; Muchenje, V.

    2014-01-01

    The objective of the study was to determine the effects of animal related factors on bruising in slaughter cattle, creatine kinase (CK) and beef quality. Three hundred and twenty one cattle from three breeds (108 Bonsmara, 130 Beefmaster and 83 Brahman) were used in this study. The animals were grouped as follows: Group 1 (16 months old), Group 2 (18 months old) and Group 3 (24 months old). At exsanguinations, blood samples for CK determination were collected using disposable vacutainer tubes. Muscularis longissimus thoracis et lumborum (LTL) was collected 24 h after slaughter to determine the colour (L*, a*, and b*) and ultimate pH (pHu) of beef. Breed, sex and age had significant effects (p<0.05) on bruising score, CK levels and beef quality. Bonsmara breed had the highest (80%) bruising score percentage, CK (705.3±80.57 U/L) and pHu (6.3±0.05) values while the Bonsmara had the highest L* (24.8±0.78) a* (17.5±0.53) and b* (12.8±0.53) values. Higher CK levels were also observed in winter compared to summer, spring and autumn respectively. Therefore, animal factors (sex, breed and animal age at slaughter) contribute to the development of bruises and have an effect on the levels of CK and meat quality. It was also concluded that there is no significant relationship between meat parameters (L,* a*, and b*) and CK levels. PMID:25050007

  14. PhET Simulation: Estimation

    NSDL National Science Digital Library

    Physics Education Technology Project

    This interactive Flash animation allows students to explore size estimation in one, two and three dimensions. Multiple levels of difficulty allow for progressive skill improvement. In the simplest level, users estimate the number of small line segments that can fit into a larger line segment. Intermediate and advanced levels offer feature games that explore area of rectangles and circles, and volume of spheres and cubes. Related lesson plans and student guides are available for middle school and high school classroom instruction. Editor's Note: When the linear dimensions of an object change by some factor, its area and volume change disproportionately: area in proportion to the square of the factor and volume in proportion to its cube. This concept is the subject of entrenched misconception among many adults. This game-like simulation allows kids to use spatial reasoning, rather than formulas, to construct geometric sense of area and volume. This is part of a larger collection developed by the Physics Education Technology project (PhET).

  15. Salivary pH: A diagnostic biomarker

    PubMed Central

    Baliga, Sharmila; Muglikar, Sangeeta; Kale, Rahul

    2013-01-01

    Objectives: Saliva contains a variety of host defense factors. It influences calculus formation and periodontal disease. Different studies have been done to find exact correlation of salivary biomarkers with periodontal disease. With a multitude of biomarkers and complexities in their determination, the salivary pH may be tried to be used as a quick chairside test. The aim of this study was to analyze the pH of saliva and determine its relevance to the severity of periodontal disease. Study Design: The study population consisted of 300 patients. They were divided into three groups of 100 patients each: Group A had clinically healthy gingiva, Group B who had generalized chronic gingivitis and Group C who had generalized chronic periodontitis. The randomized unstimulated saliva from each patient was collected and pH was tested. Data was analyzed statistically using analysis of variance technique. Results: The salivary pH was more alkaline for patients with generalized chronic gingivitis as compared with the control group (P = 0.001) whereas patients with generalized chronic periodontitis had more acidic pH as compared with the control group (P = 0.001). Conclusion: These results indicate a significant change in the pH depending on the severity of the periodontal condition. The salivary pH shows significant changes and thus relevance to the severity of periodontal disease. Salivary pH may thus be used as a quick chairside diagnostic biomarker. PMID:24174725

  16. pH. Agricultural Lesson Plans.

    ERIC Educational Resources Information Center

    Southern Illinois Univ., Carbondale. Dept. of Agricultural Education and Mechanization.

    This lesson plan is intended for use in conducting classes on the effect of pH on plant growth. Presented first are an attention step/problem statement and a series of questions and answers designed to convey general information about soil pH and its effect on plants. The following topics are among those discussed: acidity and alkalinity; the…

  17. Nursing PhD 2010 Edition

    E-print Network

    Saskatchewan, University of

    Nursing PhD Handbook 2010 Edition 107 Wiggins Rd, Saskatoon SK S7N 5E5 Phone: (306) 966-8239 Fax: (306) 966-6703 Email: grad.nursing@usask.ca #12;Welcome to the College of Nursing Graduate Program & Continuing Nursing Education #12;PhD Manual 2 Table of Contents General Information

  18. CALCULATING THE PH OF CALCIUM CARBONATE SATURATION

    EPA Science Inventory

    Two new expressions for the pH of saturation (pH subs) were derived. One is a simplified equation developed from an aqueous carbonate equilibrium system in which correction for ionic strength was considered. The other is a more accurate quadratic formula that involves computerize...

  19. Middle School and pH?

    ERIC Educational Resources Information Center

    Herricks, Susan

    2007-01-01

    A local middle school requested that the Water Center of Advanced Materials for Purification of Water With Systems (WaterCAMPWS), a National Science Foundation Science and Technology Center, provide an introduction to pH for their seventh-grade water-based service learning class. After sorting through a multitude of information about pH, a…

  20. Determination Of Ph Including Hemoglobin Correction

    DOEpatents

    Maynard, John D. (Albuquerque, NM); Hendee, Shonn P. (Albuquerque, NM); Rohrscheib, Mark R. (Albuquerque, NM); Nunez, David (Albuquerque, NM); Alam, M. Kathleen (Cedar Crest, NM); Franke, James E. (Franklin, TN); Kemeny, Gabor J. (Madison, WI)

    2005-09-13

    Methods and apparatuses of determining the pH of a sample. A method can comprise determining an infrared spectrum of the sample, and determining the hemoglobin concentration of the sample. The hemoglobin concentration and the infrared spectrum can then be used to determine the pH of the sample. In some embodiments, the hemoglobin concentration can be used to select an model relating infrared spectra to pH that is applicable at the determined hemoglobin concentration. In other embodiments, a model relating hemoglobin concentration and infrared spectra to pH can be used. An apparatus according to the present invention can comprise an illumination system, adapted to supply radiation to a sample; a collection system, adapted to collect radiation expressed from the sample responsive to the incident radiation; and an analysis system, adapted to relate information about the incident radiation, the expressed radiation, and the hemoglobin concentration of the sample to pH.

  1. ``Ultimate'' SOI MOSFETs

    NASA Astrophysics Data System (ADS)

    Walls, Thomas J.; Likharev, Konstantin K.

    2008-03-01

    Silicon-On-Insulator (SOI) field-effect transistors (MOSFETs) are being aggressively scaled toward the 10-nm frontier - see, e.g., Ref. ootnotetextM. Vinet et al., IEEE Elec. Dev. Lett., vol. 26, pp. 317-319, May 2005.. In our earlier work ootnotetextV. Sverdlov et al., IEEE Trans. on Electron Dev., vol. 50, pp. 1926-1933, Sep. 2003., we have carried out a detailed analysis of the performance and parameter variation sensitivity of double-gate sub-10-nm MOSFETs using a self-consistent numerical solution of the 2D Poisson equation and 1D Schrodinger equation. However, for very small devices the 1D approximation misses some important details of the device physics. In this work, we have used the momentum-space formalism, developed in 1989 by A. Szafer and A. D. Stone ootnotetextA. Szafer et al., Phys. Rev. Lett. vol. 62, pp. 300-303, Jan. 1989, to fully account for 2D quantum effects. At the meeting, we will present a comparison of our new results with our previous 1D approximation, as well as calculations of the gate capacitance of the transistors. This work has been supported in part by the ONR.

  2. Ultimately Reliable Pyrotechnic Systems

    NASA Technical Reports Server (NTRS)

    Scott, John H.; Hinkel, Todd

    2015-01-01

    This paper presents the methods by which NASA has designed, built, tested, and certified pyrotechnic devices for high reliability operation in extreme environments and illustrates the potential applications in the oil and gas industry. NASA's extremely successful application of pyrotechnics is built upon documented procedures and test methods that have been maintained and developed since the Apollo Program. Standards are managed and rigorously enforced for performance margins, redundancy, lot sampling, and personnel safety. The pyrotechnics utilized in spacecraft include such devices as small initiators and detonators with the power of a shotgun shell, detonating cord systems for explosive energy transfer across many feet, precision linear shaped charges for breaking structural membranes, and booster charges to actuate valves and pistons. NASA's pyrotechnics program is one of the more successful in the history of Human Spaceflight. No pyrotechnic device developed in accordance with NASA's Human Spaceflight standards has ever failed in flight use. NASA's pyrotechnic initiators work reliably in temperatures as low as -420 F. Each of the 135 Space Shuttle flights fired 102 of these initiators, some setting off multiple pyrotechnic devices, with never a failure. The recent landing on Mars of the Opportunity rover fired 174 of NASA's pyrotechnic initiators to complete the famous '7 minutes of terror.' Even after traveling through extreme radiation and thermal environments on the way to Mars, every one of them worked. These initiators have fired on the surface of Titan. NASA's design controls, procedures, and processes produce the most reliable pyrotechnics in the world. Application of pyrotechnics designed and procured in this manner could enable the energy industry's emergency equipment, such as shutoff valves and deep-sea blowout preventers, to be left in place for years in extreme environments and still be relied upon to function when needed, thus greatly enhancing safety and operational availability.

  3. The Ultimate Upgrade Guide

    NSDL National Science Digital Library

    Computers, as everyone knows, seems to get cheaper every day. Many users find that they can now buy twice the computer for half the money they spent a few years ago. A brand new computer, however, may not be the only answer for users wishing for better performance or simply a level playing field, as prices for computer components have kept pace with whole computers. This new report from PC Magazine Online is designed to help users decide if and how to upgrade their present hardware to get a few more years out of their original investment. The report is composed of three main sections (Core Components, Multimedia, and Internet and I/O Connections), each of which analyzes the merits and prices of various upgrades, and offers tips and instructions for installation.

  4. Science and Ultimate Reality

    NASA Astrophysics Data System (ADS)

    Barrow, John D.; Davies, Paul C. W.; Harper, Charles L., Jr.

    2004-06-01

    This preview of the future of physics comprises contributions from recognized authorities inspired by the pioneering work of John Wheeler. Quantum theory represents a unifying theme within the book, as it relates to the topics of the nature of physical reality, cosmic inflation, the arrow of time, models of the universe, superstrings, quantum gravity and cosmology. Attempts to formulate a final unification theory of physics are also considered, along with the existence of hidden dimensions of space, hidden cosmic matter, and the strange world of quantum technology. John Archibald Wheeler is one of the most influential scientists of the twentieth century. His extraordinary career has spanned momentous advances in physics, from the birth of the nuclear age to the conception of the quantum computer. Famous for coining the term "black hole," Professor Wheeler helped lay the foundations for the rebirth of gravitation as a mainstream branch of science, triggering the explosive growth in astrophysics and cosmology that followed. His early contributions to physics include the S matrix, the theory of nuclear rotation (with Edward Teller), the theory of nuclear fission (with Niels Bohr), action-at-a-distance electrodynamics (with Richard Feynman), positrons as backward-in-time electrons, the universal Fermi interaction (with Jayme Tiomno), muonic atoms, and the collective model of the nucleus. His inimitable style of thinking, quirky wit, and love of the bizarre have inspired generations of physicists.

  5. Humankind's Ultimate Security

    Microsoft Academic Search

    John Cairns

    2006-01-01

    While humankind is obsessed with economic growth, terrorism, and unverified rumors of weapons of mass destruction, a much greater threat to both individual and societal security is developing with frightening rapidity—the increasingly probable failure of the biospheric life support system to continue maintaining conditions that have been favorable to humans for 160,000 years. Worst yet, humankind's unsustainable practices are the

  6. Ultimate Cary Grant Pages

    NSDL National Science Digital Library

    Maintained and developed by Debbie Dunlap, a devoted fan, this site pays homage to Cary Grant (whose real name was the slightly less marquee-friendly, Archibald Leach), one of Hollywood's leading men during the 20th century. The site provides a host of material about Grant, his films, and his life, including a filmography, movie reviews, a photo gallery, a sound gallery, and links to old radio shows in which Cary Grant appeared. The sound gallery is an excellent part of the site, as visitors can listen to audio clips from Grant vehicles like North by Northwest, Arsenic and Old Lace, and Charade. Visitors will learn quite a bit about Cary Grant from the site, including the fact that he never won an Academy Award for his acting, although he was awarded an honorary Oscar in 1970 for his life's work.

  7. Kepler, the Ultimate Aristotelian

    NASA Astrophysics Data System (ADS)

    Davis, A. E. L.

    A comparison is made between Aristotelian and Newtonian versions of Laws of Motion. Kepler was successful in proving the 2 laws of motion of a single planet - to the extent that agreement with a framework of theory constitutes a proof. Of course he invented his framework of causes after the event, to fit the motions that had been already been quantified - but it may seem to you that Kepler's mainly mechanistic way explanation could have been considered by his contemporaries just as reasonable as Newton's action at a distance. It could be now apprecated that there was a window of less than 50 years before Newton's total synthesis. No-one previously had had the motivation to create a system of "celestial physics" based on a judicious use of Aristotelian principles. Yet this is what Kepler achieved.

  8. COED ULTIMATE Information Sheet

    E-print Network

    Seamons, Kent E.

    or married student ward they attend. The intramural activity fee is paid at the Information Center in 112 be represented at this meeting. ELIGIBILITY Spring 2014 full-time BYU students (6 credits), and faculty/staff are eligible. Part-time students, deferred students, non-students, and spouses of students must pay

  9. The ultimate high tide

    SciTech Connect

    Dean, R.G. (Florida Dept. of Natural Resources, Tallahassee (USA))

    1990-01-01

    This paper discusses the possible coastal impacts of a rise in sea level. Control measures that are available to coastal communities are emphasized, including pumping of seawater into the ground, replenishing beach sand, protection or moving of potable-water intakes, elevating roadways, and building dikes. Economics will determine which, if any, measures are reasonable at a particular site. There is an upward trend in the mean CO{sub 2} concentration and predictions about the greenhouse effect are creating a rising tide of concern.

  10. Ultimate IR horizon sensor

    Microsoft Academic Search

    Y. K. Jain; T. K. Alex; B. Kalakrishnan

    1980-01-01

    The accuracy of presently available IR horizon sensors is not sufficient to meet the stringent attitude sensing and control requirements for future remote sensing and meteorological satellites. The different sources of error in a horizon sensor are analyzed. The accuracy of the sensor is presently limited by the detector noise. Use of HgCdTe in place of an immersed bolometer detector,

  11. MEASURING THE ULTIMATE HALO MASS OF GALAXY CLUSTERS: REDSHIFTS AND MASS PROFILES FROM THE HECTOSPEC CLUSTER SURVEY (HeCS)

    SciTech Connect

    Rines, Kenneth [Department of Physics and Astronomy, Western Washington University, Bellingham, WA 98225 (United States)] [Department of Physics and Astronomy, Western Washington University, Bellingham, WA 98225 (United States); Geller, Margaret J.; Kurtz, Michael J. [Smithsonian Astrophysical Observatory, 60 Garden Street, MS 20, Cambridge, MA 02138 (United States)] [Smithsonian Astrophysical Observatory, 60 Garden Street, MS 20, Cambridge, MA 02138 (United States); Diaferio, Antonaldo, E-mail: kenneth.rines@wwu.edu, E-mail: diaferio@ph.unito.it [Dipartimento di Fisica, Universita di Torino, Torino (Italy)] [Dipartimento di Fisica, Universita di Torino, Torino (Italy)

    2013-04-10

    The infall regions of galaxy clusters represent the largest gravitationally bound structures in a {Lambda}CDM universe. Measuring cluster mass profiles into the infall regions provides an estimate of the ultimate mass of these halos. We use the caustic technique to measure cluster mass profiles from galaxy redshifts obtained with the Hectospec Cluster Survey (HeCS), an extensive spectroscopic survey of galaxy clusters with MMT/Hectospec. We survey 58 clusters selected by X-ray flux at 0.1 < z < 0.3. The survey includes 22,680 unique MMT/Hectospec redshifts for individual galaxies; 10,145 of these galaxies are cluster members. For each cluster, we acquired high signal-to-noise spectra for {approx}200 cluster members and a comparable number of foreground/background galaxies. The cluster members trace out infall patterns around the clusters. The members define a very narrow red sequence. We demonstrate that the determination of velocity dispersion is insensitive to the inclusion of bluer members (a small fraction of the cluster population). We apply the caustic technique to define membership and estimate the mass profiles to large radii. The ultimate halo mass of clusters (the mass that remains bound in the far future of a {Lambda}CDM universe) is on average (1.99 {+-} 0.11)M{sub 200}, a new observational cosmological test in essential agreement with simulations. Summed profiles binned in M{sub 200} and in L{sub X} demonstrate that the predicted Navarro-Frenk-White form of the density profile is a remarkably good representation of the data in agreement with weak lensing results extending to large radius. The concentration of these summed profiles is also consistent with theoretical predictions.

  12. Effects of low doses of lactitol on faecal microflora, pH, short chain fatty acids and gastrointestinal symptomology

    Microsoft Academic Search

    Michelle Finney; Joanne Smullen; Howard A. Foster; Saskia Brokx; David M. Storey

    2007-01-01

    Background  Lactitol (4-?-d-galactopyranosyl-d-glucitol) is a sugar alcohol used as a sweetener. Previous studies have shown that it has a beneficial effect on intestinal\\u000a microflora.\\u000a \\u000a \\u000a \\u000a Aims of the study  To determine whether low doses of lactitol had beneficial effects without eliciting adverse gastrointestinal symptoms.\\u000a \\u000a \\u000a \\u000a Methods  Faecal bacterial populations (total anaerobes, total aerobes, enterobacteria, bifidobacteria and lactobacilli), faecal pH\\u000a and faecal short chain fatty acids

  13. Effect of initial heating of the jet-forming layer of shaped-charge liners on the ultimate elongation of jet elements

    Microsoft Academic Search

    G. E. Markelov

    2000-01-01

    The functional dependence of the coefficient of ultimate elongation on the temperature of initial heating of the jet-forming\\u000a layer of shaped-charge liners is obtained. It is established that heating of the shaped-charge liner material before initiation\\u000a increases the ultimate elongation and, hence, the effectiveness of penetration of plastically fractured, high-gradient, shaped-charge\\u000a jets.

  14. Acidified seawater impacts sea urchin larvae pH regulatory systems relevant for calcification

    PubMed Central

    Stumpp, Meike; Hu, Marian Y.; Melzner, Frank; Gutowska, Magdalena A.; Dorey, Narimane; Himmerkus, Nina; Holtmann, Wiebke C.; Dupont, Sam T.; Thorndyke, Michael C.; Bleich, Markus

    2012-01-01

    Calcifying echinoid larvae respond to changes in seawater carbonate chemistry with reduced growth and developmental delay. To date, no information exists on how ocean acidification acts on pH homeostasis in echinoderm larvae. Understanding acid–base regulatory capacities is important because intracellular formation and maintenance of the calcium carbonate skeleton is dependent on pH homeostasis. Using H+-selective microelectrodes and the pH-sensitive fluorescent dye BCECF, we conducted in vivo measurements of extracellular and intracellular pH (pHe and pHi) in echinoderm larvae. We exposed pluteus larvae to a range of seawater CO2 conditions and demonstrated that the extracellular compartment surrounding the calcifying primary mesenchyme cells (PMCs) conforms to the surrounding seawater with respect to pH during exposure to elevated seawater pCO2. Using FITC dextran conjugates, we demonstrate that sea urchin larvae have a leaky integument. PMCs and spicules are therefore directly exposed to strong changes in pHe whenever seawater pH changes. However, measurements of pHi demonstrated that PMCs are able to fully compensate an induced intracellular acidosis. This was highly dependent on Na+ and HCO3?, suggesting a bicarbonate buffer mechanism involving secondary active Na+-dependent membrane transport proteins. We suggest that, under ocean acidification, maintained pHi enables calcification to proceed despite decreased pHe. However, this probably causes enhanced costs. Increased costs for calcification or cellular homeostasis can be one of the main factors leading to modifications in energy partitioning, which then impacts growth and, ultimately, results in increased mortality of echinoid larvae during the pelagic life stage. PMID:23077257

  15. Acidified seawater impacts sea urchin larvae pH regulatory systems relevant for calcification.

    PubMed

    Stumpp, Meike; Hu, Marian Y; Melzner, Frank; Gutowska, Magdalena A; Dorey, Narimane; Himmerkus, Nina; Holtmann, Wiebke C; Dupont, Sam T; Thorndyke, Michael C; Bleich, Markus

    2012-10-30

    Calcifying echinoid larvae respond to changes in seawater carbonate chemistry with reduced growth and developmental delay. To date, no information exists on how ocean acidification acts on pH homeostasis in echinoderm larvae. Understanding acid-base regulatory capacities is important because intracellular formation and maintenance of the calcium carbonate skeleton is dependent on pH homeostasis. Using H(+)-selective microelectrodes and the pH-sensitive fluorescent dye BCECF, we conducted in vivo measurements of extracellular and intracellular pH (pH(e) and pH(i)) in echinoderm larvae. We exposed pluteus larvae to a range of seawater CO(2) conditions and demonstrated that the extracellular compartment surrounding the calcifying primary mesenchyme cells (PMCs) conforms to the surrounding seawater with respect to pH during exposure to elevated seawater pCO(2). Using FITC dextran conjugates, we demonstrate that sea urchin larvae have a leaky integument. PMCs and spicules are therefore directly exposed to strong changes in pH(e) whenever seawater pH changes. However, measurements of pH(i) demonstrated that PMCs are able to fully compensate an induced intracellular acidosis. This was highly dependent on Na(+) and HCO(3)(-), suggesting a bicarbonate buffer mechanism involving secondary active Na(+)-dependent membrane transport proteins. We suggest that, under ocean acidification, maintained pH(i) enables calcification to proceed despite decreased pH(e). However, this probably causes enhanced costs. Increased costs for calcification or cellular homeostasis can be one of the main factors leading to modifications in energy partitioning, which then impacts growth and, ultimately, results in increased mortality of echinoid larvae during the pelagic life stage. PMID:23077257

  16. M.S. and Ph.D. in Environmental

    E-print Network

    Chapman, Michael S.

    , or business. Ph.D. Degree The Ph.D. in ESE prepares students for careers in academic research, teaching genomics and proteomics, and computer modeling and simulation. Collaborations within OHSU's Institute, Ph.D. Marine Biotechnology Richard Johnson, Ph.D. Contaminant Hydrology Joseph Needoba, Ph.D. Marine

  17. Summary PhD candidate satisfaction survey 2011 Introduction

    E-print Network

    Utrecht, Universiteit

    1 Summary PhD candidate satisfaction survey 2011 Introduction Nine years ago, Utrecht University asked its PhD candidates to rate a number of aspects of their PhD careers: were they on schedule; what completing their PhDs. Nine years later, a second survey is conducted on PhD candidate satisfaction

  18. Multitechnique investigation of the pH dependence of phosphate induced transformations of ZnO nanoparticles.

    PubMed

    Rathnayake, Sewwandi; Unrine, Jason M; Judy, Jonathan; Miller, Anne-Frances; Rao, William; Bertsch, Paul M

    2014-05-01

    In order to properly evaluate the ecological and human health risks of ZnO manufactured nanomaterials (MNMs) released to the environment, it is critical to understand the likely transformation products in various environments, such as soils, surface and ground waters, and wastewater treatment processes. To address this knowledge gap, we examined the transformation of 30 nm ZnO MNMs in the presence of different concentrations of phosphate as a function of time and pH using a variety of orthogonal analytical techniques. The data reveal that ZnO MNMs react with phosphate at various concentrations and transform into two distinct morphological/structural phases: a micrometer scale crystalline zinc phosphate phase (hopeite-like) and a nanoscale phase that likely consists of a ZnO core with an amorphous Zn3(PO4)2 shell. The P species composition was also pH dependent, with 82% occurring as hopeite-like P at pH 6 while only 15% occurred as hopeite-like P at pH 8. These results highlight how reactions of ZnO MNMs with phosphate are influenced by environmental variables, including pH, and may ultimately result in structurally and morphologically heterogeneous end products. PMID:24693856

  19. Capturing hydrolysis products in the solid state: effects of pH on uranyl squarates under ambient conditions.

    PubMed

    Rowland, Clare E; Cahill, Christopher L

    2010-10-01

    Two uranyl squarates, (UO(2))(6)(C(4)O(4))(3)(OH)(6)O(2)·9H(2)O·4NH(4) (1; a = 16.6897(7) Å, cubic, I23) and (UO(2))(C(4)O(4))(OH)(2)·2NH(4) (2; a = 8.5151(4), b = 15.6822(8), c = 7.3974, orthorhombic, Pbcm), have been synthesized from ambient aqueous solutions as a function of pH. Oligomerization of the uranyl cation from monomeric pentagonal bipyramids (pH < 5) to [(UO(2))(3)O(OH)(3)] trimers (5 < pH < 8) in 1 and ultimately [(UO(2))(OH)(2)](n) chains (7 < pH < 8) in 2 is observed. This evolution of speciation versus pH is consistent with what has been observed in solution and thus may be represented by the uranyl hydrolysis equilibrium, mUO(2)(2+) + nH(2)O ? [(UO(2))(m)(OH)(n)](2m - n) + nH(+). Structural systematics, physical properties, and a discussion of species selectivity by squarate anions are presented. PMID:20222717

  20. Proximate and Ultimate Causation of Egg Size and the "Third-Chick Disadvantage" in the Western Gull

    E-print Network

    Pierotti, Raymond; Bellrose, Cheryl A.

    1986-04-01

    significant difference in size occurred between first- and second-laid eggs. This implies that increased costs of territorial defense led to a change in energy partitioning among eggs. In the Her- ring Gull (Larus argentatus) a reduction in nest density... of the Herring Gull (Larus argentatus) induced by reduction in size and density of the colony. J. Anim. Ecol. 51: 739-756. COULTERß M. C. 1977. Growth, mortality, and the third-chick disadvantage in the Western Gull, Larus occidentalis. Unpublished Ph...

  1. Management of Ultimate Risk of Nuclear Power Plants by Source Terms - Lessons Learned from the Chernobyl Accident

    SciTech Connect

    Genn Saji [Ex-Secretariate of Nuclear Safety Commission of Japan (Japan)

    2006-07-01

    The term 'ultimate risk' is used here to describe the probabilities and radiological consequences that should be incorporated in siting, containment design and accident management of nuclear power plants for hypothetical accidents. It is closely related with the source terms specified in siting criteria which assures an adequate separation of radioactive inventories of the plants from the public, in the event of a hypothetical and severe accident situation. The author would like to point out that current source terms which are based on the information from the Windscale accident (1957) through TID-14844 are very outdated and do not incorporate lessons learned from either the Three Miles Island (TMI, 1979) nor Chernobyl accident (1986), two of the most severe accidents ever experienced. As a result of the observations of benign radionuclides released at TMI, the technical community in the US felt that a more realistic evaluation of severe reactor accident source terms was necessary. In this background, the 'source term research project' was organized in 1984 to respond to these challenges. Unfortunately, soon after the time of the final report from this project was released, the Chernobyl accident occurred. Due to the enormous consequences induced by then accident, the one time optimistic perspectives in establishing a more realistic source term were completely shattered. The Chernobyl accident, with its human death toll and dispersion of a large part of the fission fragments inventories into the environment, created a significant degradation in the public's acceptance of nuclear energy throughout the world. In spite of this, nuclear communities have been prudent in responding to the public's anxiety towards the ultimate safety of nuclear plants, since there still remained many unknown points revolving around the mechanism of the Chernobyl accident. In order to resolve some of these mysteries, the author has performed a scoping study of the dispersion and deposition mechanisms of fuel particles and fission fragments during the initial phase of the Chernobyl accident. Through this study, it is now possible to generally reconstruct the radiological consequences by using a dispersion calculation technique, combined with the meteorological data at the time of the accident and land contamination densities of {sup 137}Cs measured and reported around the Chernobyl area. Although it is challenging to incorporate lessons learned from the Chernobyl accident into the source term issues, the author has already developed an example of safety goals by incorporating the radiological consequences of the accident. The example provides safety goals by specifying source term releases in a graded approach in combination with probabilities, i.e. risks. The author believes that the future source term specification should be directly linked with safety goals. (author)

  2. Roadmap: Public Health Pre-Medicine Bachelor of Science in Public Health [PH-BSPH-PH-PMD

    E-print Network

    Sheridan, Scott

    Roadmap: Public Health ­ Pre-Medicine ­Bachelor of Science in Public Health [PH and 10120 PH 30004 Public Health Research 3 PH 30007 Prevention and Control of Diseases 3 PHY 13001 Health ­ Pre-Medicine ­Bachelor of Science in Public Health [PH-BSPH-PH-PMD] College of Public Health

  3. Nadarajen A. Vydelingum, PhD

    Cancer.gov

    Division of Cancer Prevention Staff Nadarajen A. Vydelingum, PhD Biologist and Program DirectorCancer Biomarkers Research Group Location Division of Cancer PreventionNational Cancer Institute9609 Medical Center Drive, Room 5E604 Rockville, MD

  4. Vance W. Berger, PhD

    Cancer.gov

    Division of Cancer Prevention Staff Vance W. Berger, PhD Mathematical StatisticianBiometry Research Group Location Division of Cancer PreventionNational Cancer Institute9609 Medical Center Drive, Room 5E628 Rockville, MD 20850 Phone

  5. Paul Pinsky, PhD, MPH

    Cancer.gov

    Division of Cancer Prevention Staff Paul Pinsky, PhD, MPH Acting ChiefEarly Detection Research Group Location Division of Cancer PreventionNational Cancer Institute9609 Medical Center Drive, Room 5E444 Rockville, MD 20850 Phone

  6. Mary Fennell, PhD Chair

    Cancer.gov

    NCI Community Cancer Centers Program Evaluation Oversight Committee Roster CHAIR Mary Fennell, Ph.D. Chair, Department of Sociology and Community Health Brown University Box 1916, 211 Maxcy Hall 112 George Street Providence, RI 02912

  7. Procedure for calculating estimated ultimate recoveries of Bakken and Three Forks Formations horizontal wells in the Williston Basin

    USGS Publications Warehouse

    Cook, Troy A.

    2013-01-01

    Estimated ultimate recoveries (EURs) are a key component in determining productivity of wells in continuous-type oil and gas reservoirs. EURs form the foundation of a well-performance-based assessment methodology initially developed by the U.S. Geological Survey (USGS; Schmoker, 1999). This methodology was formally reviewed by the American Association of Petroleum Geologists Committee on Resource Evaluation (Curtis and others, 2001). The EUR estimation methodology described in this paper was used in the 2013 USGS assessment of continuous oil resources in the Bakken and Three Forks Formations and incorporates uncertainties that would not normally be included in a basic decline-curve calculation. These uncertainties relate to (1) the mean time before failure of the entire well-production system (excluding economics), (2) the uncertainty of when (and if) a stable hyperbolic-decline profile is revealed in the production data, (3) the particular formation involved, (4) relations between initial production rates and a stable hyperbolic-decline profile, and (5) the final behavior of the decline extrapolation as production becomes more dependent on matrix storage.

  8. The Three-mm Ultimate Mopra Milky Way Survey. II. Cloud and Star Formation Near the Filamentary Ministarburst RCW 106

    E-print Network

    Nguyen, Hans; Martin, Peter G; Barnes, Peter J; Muller, Erik; Lowe, Vicki; Lo, Nadia; Cunningham, Maria; Motte, Frédérique; O'Dougherty, Stefan N; Hernandez, Audra K; Fuller, Gary A

    2015-01-01

    We report here a study of gas, dust and star formation rates (SFRs) in the molecular cloud complexes (MCCs) surrounding the giant H$\\,{\\rm \\scriptsize{II}}$ region RCW$\\,$106 using $^{12}$CO and $^{13}$CO$\\,$(1-0) data from the Three-mm Ultimate Mopra Milky way Survey (ThrUMMS) and archival data. We separate the emission in the Galactic Plane around $l=330^{\\circ}$-$335^{\\circ}$ and $b=-1^{\\circ}$-$1^{\\circ}$ into two main MCCs: the RCW$\\,$106 (V$_{\\rm LSR} = -48\\,$km$\\,$s$^{-1}$) complex and the MCC331-90(V$_{\\rm LSR} = -90\\,$km$\\,$s$^{-1}$) complex. While RCW$\\,$106 (M$\\sim 5.9\\times 10^{6}\\,$M$_{\\odot}$) is located in the Scutum-Centaurus arm at a distance of 3.6$\\,$kpc, MCC331-90 (M$\\sim 2.8\\times 10^{6}\\,$M$_{\\odot}$) is in the Norma arm at a distance of 5$\\,$kpc. Their molecular gas mass surface densities are $\\sim220$ and $\\sim130\\,$M$_{\\odot}$ pc$^{-2}$, respectively. For RCW$\\,$106 complex, using the 21$\\,$cm continuum fluxes and dense clump counting, we obtain an immediate past ($\\sim$-0.2$\\,$Myr) a...

  9. The impact of therapeutic delay time on acute scintigraphic lesion and ultimate scar formation in children with first febrile UTI.

    PubMed

    Oh, Mi Mi; Kim, Jin Wook; Park, Min Gu; Kim, Je Jong; Yoo, Kee Hwan; Moon, Du Geon

    2012-03-01

    We assessed the role of therapeutic delay time (TDT) in acute renal cortical scintigraphic lesion (ASL) and ultimate scar formation (USF) in children with first febrile UTI and whether it is affected by the presence of vesico-ureteral reflux (VUR). 230 children, 90 girls and 140 boys with first febrile UTI were included. Radiologic (USG, DMSA, and VCUG), clinical (age, gender, peak fever, therapeutic delay time) and laboratory (CBC with differential count, ANC (absolute neutrophil count), BUN, Creatinine, urine analysis, gram stain, culture, CRP and ESR) variables were analysed. DMSA was performed within 5 days and after six months. VCUG was performed after acute phase of UTI. The differences in TDT according to the presence of ASL, USF and VUR were assessed. And the correlation between ASL or USF with the duration of TDT was assessed. Of 230 patients enrolled, 142 patients had refluxing UTI and 88 patients had non-refluxing UTI. TDT was the risk factor associated with ASL and USF along with presence of VUR. TDT was longer in ASL positive group compared with the ASL negative group. Also USF group showed longer TDT compared with those without USF in both refluxing UTI and non refluxing UTI. The TDT was significantly shorter in USF group with the presence of VUR. Positive linear association was noted between prevalence of ASL and USF and duration of TDT. In conclusion, the impact of UTI on formation of USF may be enhanced by the presence of VUR with shorter duration of TDT. PMID:22048628

  10. Observation of millimeter-wave oscillations from resonant tunneling diodes and some theoretical considerations of ultimate frequency limits

    NASA Technical Reports Server (NTRS)

    Sollner, T. C. L. G.; Brown, E. R.; Goodhue, W. D.; Le, H. Q.

    1987-01-01

    Recent observations of oscillation frequencies up to 56 GHz in resonant tunneling structures are discussed in relation to calculations by several authors of the ultimate frequency limits of these devices. It is found that calculations relying on the Wentzel-Kramers-Brillouin (WKB) approximation give limits well below the observed oscillation frequencies. Two other techniques for calculating the upper frequency limit were found to give more reasonable results. One method employs the solution of the time-dependent Schroedinger equation obtained by Kundrotas and Dargys (1986); the other uses the energy width of the transmission function for electrons through the double-barrier structure. This last technique is believed to be the most accurate since it is based on general results for the lifetime of any resonant state. It gives frequency limits on the order of 1 THz for two recently fabricated structures. It appears that the primary limitation of the oscillation frequency for double-barrier resonant-tunneling diodes is imposed by intrinsic device circuit parameters and by the transit time of the depletion layer rather than by time delays encountered in the double-barrier region.

  11. Genotyping-by-sequencing (GBS), an ultimate marker-assisted selection (MAS) tool to accelerate plant breeding

    PubMed Central

    He, Jiangfeng; Zhao, Xiaoqing; Laroche, André; Lu, Zhen-Xiang; Liu, HongKui; Li, Ziqin

    2014-01-01

    Marker-assisted selection (MAS) refers to the use of molecular markers to assist phenotypic selections in crop improvement. Several types of molecular markers, such as single nucleotide polymorphism (SNP), have been identified and effectively used in plant breeding. The application of next-generation sequencing (NGS) technologies has led to remarkable advances in whole genome sequencing, which provides ultra-throughput sequences to revolutionize plant genotyping and breeding. To further broaden NGS usages to large crop genomes such as maize and wheat, genotyping-by-sequencing (GBS) has been developed and applied in sequencing multiplexed samples that combine molecular marker discovery and genotyping. GBS is a novel application of NGS protocols for discovering and genotyping SNPs in crop genomes and populations. The GBS approach includes the digestion of genomic DNA with restriction enzymes followed by the ligation of barcode adapter, PCR amplification and sequencing of the amplified DNA pool on a single lane of flow cells. Bioinformatic pipelines are needed to analyze and interpret GBS datasets. As an ultimate MAS tool and a cost-effective technique, GBS has been successfully used in implementing genome-wide association study (GWAS), genomic diversity study, genetic linkage analysis, molecular marker discovery and genomic selection under a large scale of plant breeding programs. PMID:25324846

  12. Calculation of calorific values of coals from ultimate analyses: theoretical basis and geochemical implications. Final report. Part 8

    SciTech Connect

    Given, P.H.; Weldon, D.; Zoeller, J.H.

    1984-03-01

    The various formulae for calculating calorific values for coals from ultimate analyses depend essentially on a propositon due to Dulong, that the heat of combustion of an organic compound is nearly equal to the heats of combustion of the elements in it, multiplied by their percentage content in the compound in question. This proposition assumes that the enthalpy of decomposition is negligible compared with the heat of combustion. The various published formulae, such as that due to Mott and Spooner, include empirical adjustments to allow for the fact that the enthalpy of formation or decomposition of no organic compound is zero (except rarely by chance). A new equation is proposed, which excludes empirical correction terms but includes a term explicitly related to the enthalpy of decomposition. As expected from the behavior of known compounds, this enthalpy varies with rank, but it also varies at the same level of rank with the geological history of the sample: rank is not the only source of variance in coal properties. The new equation is at least as effective in predicting calorific values for a set of 992 coals as equivalent equations derived for 6 subsets of the coals. On the whole, the distributions of differences between observed and calculated calorific values are skewed to only a small extent. About 86% of the differences lie between -300 and +300 Btu/lb (+- 700 kJ/kg). 10 references, 7 figures, 4 tables.

  13. Imaging-Genetics in Dyslexia: Connecting risk genetic variants to brain neuroimaging and ultimately to reading impairments

    PubMed Central

    Eicher, John D.; Gruen, Jeffrey R.

    2013-01-01

    Dyslexia is a common pediatric disorder that affects 5-17% of schoolchildren in the United States. It is marked by unexpected difficulties in fluent reading despite adequate intelligence, opportunity, and instruction. Classically, neuropsychologists have studied dyslexia using a variety of neurocognitive batteries to gain insight into the specific deficits and impairments in affected children. Since dyslexia is a complex genetic trait with high heritability, analyses conditioned on performance on these neurocognitive batteries have been used to try to identify associated genes. This has led to some successes in identifying contributing genes, although much of the heritability remains unexplained. Additionally, the lack of relevant human brain tissue for analysis and the challenges of modeling a uniquely human trait in animals are barriers to advancing our knowledge of the underlying pathophysiology. In vivo imaging technologies, however, present new opportunities to examine dyslexia and reading skills in a clearly relevant context in human subjects. Recent investigations have started to integrate these imaging data with genetic data in attempts to gain a more complete and complex understanding of reading processes. In addition to bridging the gap from genetic risk variant to a discernible neuroimaging phenotype and ultimately to the clinical impairments in reading performance, the use of neuroimaging phenotypes will reveal novel risk genes and variants. In this article, we briefly discuss the genetic and imaging investigations and take an in-depth look at the recent imaging-genetics investigations of dyslexia. PMID:23916419

  14. Development of FRP composite structural biomaterials: ultimate strength of the fiber/matrix interfacial bond in in vivo simulated environments.

    PubMed

    Latour, R A; Black, J

    1992-05-01

    Fiber reinforced polymer (FRP) composites are being developed as alternatives to metals for structural orthopedic implant applications. FRP composite fracture behavior and environmental interactions are distinctly different from those which occur in metals. These differences must be accounted for in the design and evaluation of implant performance. Fiber/matrix interfacial bond strength in a FRP composite is known to strongly influence fracture behavior. The interfacial bond strength of four candidate fiber/matrix combinations (carbon fiber/polycarbonate, carbon fiber/polysulfone, polyaramid fiber/polycarbonate, polyaramid fiber/polysulfone) were investigated at 37 degrees C in dry and in vivo simulated (saline, exudate) environments. Ultimate bond strength was measured by a single fiber-microdroplet pull-out test. Dry bond strengths were significantly decreased following exposure to either saline or exudate with bond strength loss being approximately equal in both the saline and exudate. Bond strength loss is attributed to the diffusion of water and/or salt ions into the sample and their interaction with interfacial bonding. Because bond degradation is dependent upon diffusion, diffusional equilibrium must be obtained in composite test samples before the full effect of the test environment upon composite mechanical behavior can be determined. PMID:1512281

  15. IMPEE PhD Opportunity Project title: LightFoot PhD A PhD Investigation Lightning Protection of HV Overhead Lines with Non-Ideal

    E-print Network

    Greenaway, Alan

    IMPEE PhD Opportunity Project title: LightFoot PhD ­ A PhD Investigation Lightning Protection of HV.swingler@hw.ac.uk Abstract LightFoot PhD ­ A PhD Investigation Lightning Protection of HV Overhead Lines with Non-Ideal Tower to the understanding of the effect of lightning strikes on an overhead transmission line in terms of its electrical

  16. Cognitive Science Program PhD and Joint PhD Timeline PhD = Single major w/ CogSci as Home dept;

    E-print Network

    Indiana University

    Cognitive Science Program PhD and Joint PhD Timeline PhD = Single major w/ CogSci as Home dept; PhD Joint = Dual Major w/ CogSci as Home Dept Joint PhD = Dual Major w/ CogSci NOT as Home Dept. KEY: AC=Advisory Committee; DGS= Director of Graduate Studies; UGS = University Graduate School Timing Events Forms Required

  17. Gas phase ion chemistry and ab initio theoretical study of phosphine. III. Reactions of PH2+ and PH3+ with PH3

    NASA Astrophysics Data System (ADS)

    Antoniotti, Paola; Operti, Lorenza; Rabezzana, Roberto; Tonachini, Glauco; Vaglio, Gian Angelo

    2000-01-01

    The gas phase ion chemistry of phosphine has been investigated by ab initio theoretical calculations and experimental techniques. Following previous studies dealing with 3P+ and PH+ reacting with PH3, the quantum chemical study of these processes has been extended to the ion/molecule reactions starting from PH2+ and PH3 (reaction a) or PH3+ and PH3 (reaction b), as observed by ion trapping. In these experiments, PH2+ reacts to give P2Hn+ (n=1,3) product ions, with loss of H2 through different pathways. These processes take place at quite different rates, their constants being 2.6 and 7.6×10-10 cm3 molecule-1 s-1, respectively. The geometrical structures and energies of transition structures, reaction intermediates, and final products have been determined by ab initio theoretical methods. The initial step of the reaction of PH2+ with PH3 is formation of the H2P-PH3+ adduct. Then, a hydrogen molecule can be directly lost either from tricoordinated or tetracoordinated phosphorus, to give P-PH3+ or HP=PH2+, respectively. The shift of one H atom in HP=PH2+ produces the bridged HP(H)PH+ ion, from which further dissociation of H2 yields PPH+. The initial step of the reaction of PH3+ with PH3 is formation of the H3P-PH3+ adduct. Then inversion of the H atoms in the PH3 group transforms the adduct in an electrostatic complex. This last species is related by a dissociation process to the PH2 and PH4+ products. The heats of formation of the P2Hn+ (n=1-6) ionic species have been computed and compared with the experimental data in the literature.

  18. Department of Bioengineering Ph.D. Graduate Student Handbook

    E-print Network

    Fang-Yen, Christopher

    Bioengineering PhD students a brief history and overview of the Bioengineering department at Penn along......................................................................................................................12 TIME LIMIT FOR COMPLETION OF THE PH

  19. EFFECT OF DIET pH ON THE CONSUMPTION, BROOD REARING, AND pH OF WORKER JELLY

    E-print Network

    Paris-Sud XI, Université de

    are sensitive to changes in pH, the gut pH of the honey bee must be maintained at a fairly constant level maintain the gut and hemolymph pH at levels critical for survival because changes in pH could resultEFFECT OF DIET pH ON THE CONSUMPTION, BROOD REARING, AND pH OF WORKER JELLY PRODUCED BY CAGED HONEY

  20. Version 3.0 SOP 6a --pH October 12, 2007 pH (total hydrogen

    E-print Network

    Version 3.0 SOP 6a -- pH October 12, 2007 117 SOP 6a pH - / 1. pH (total hydrogen ion concentration pH scale) . , [H+ ] 1 kg . 2. . F T S F 4 [H ] [H ] (1 / ) [H ] [HSO ] S K+ + + - = + + (1) [H+ ]F (free concentration), ST ([HSO4 - ]+[SO4 2- ]) KS [HSO4 - ] . pH . 10 1 [H ] pH

  1. MRF with adjustable pH

    NASA Astrophysics Data System (ADS)

    Jacobs, Stephen D.

    2011-10-01

    Deterministic final polishing of high precision optics using sub-aperture processing with magnetorheological finishing (MRF) is an accepted practice throughout the world. A wide variety of materials can be successfully worked with aqueous (pH 10), magnetorheological (MR) fluids, using magnetic carbonyl iron (CI) and either ceria or nanodiamond nonmagnetic abrasives. Polycrystalline materials like zinc sulfide (ZnS) and zinc selenide (ZnSe) are difficult to polish at pH 10 with MRF, due to their grain size and the relatively low stiffness of the MR fluid lap. If microns of material are removed, the grain structure of the material begins to appear. In 2005, Kozhinova et al. (Appl. Opt. 44 4671-4677) demonstrated that lowering pH could improve MRF of ZnS. However, magnetic CI particle corrosion rendered their low pH approach unstable and unsuitable for commercial implementation. In 2009, Shafrir et al. described a sol-gel coating process for manufacturing a zirconia-coated CI particle that protects the magnetic core from aqueous corrosion (Appl. Opt .48 6797-6810). The coating process produces free nanozirconia polishing abrasives during the coating procedure, thereby creating an MR polishing powder that is "self-charged" with the polishing abrasive. By simply adding water, it was possible to polish optical glasses and ceramics with good stability at pH 8 for three weeks. The development of a corrosion resistant, MR polishing powder, opens up the possibility for polishing additional materials, wherein the pH may be adjusted to optimize effectiveness. In this paper we describe the CI coating process, the characterization of the coated powder, and procedures for making stable MR fluids with adjustable pH, giving polishing results for a variety of optical glasses and crystalline ceramics.

  2. Eukaryotic diversity at pH extremes

    PubMed Central

    Amaral-Zettler, Linda A.

    2013-01-01

    Extremely acidic (pH < 3) and extremely alkaline (pH > 9) environments support a diversity of single-cell and to a lesser extent, multicellular eukaryotic life. This study compared alpha and beta diversity in eukaryotic communities from seven diverse aquatic environments with pH values ranging from 2 to 11 using massively-parallel pyrotag sequencing targeting the V9 hypervariable region of the 18S ribosomal RNA (rRNA) gene. A total of 946 operational taxonomic units (OTUs) were recovered at a 6% cut-off level (94% similarity) across the sampled environments. Hierarchical clustering of the samples segregated the communities into acidic and alkaline groups. Similarity percentage (SIMPER) analysis followed by indicator OTU analysis (IOA) and non-metric multidimensional scaling (NMDS) were used to determine which characteristic groups of eukaryotic taxa typify acidic or alkaline extremes and the extent to which pH explains eukaryotic community structure in these environments. Spain's Rio Tinto yielded the fewest observed OTUs while Nebraska Sandhills alkaline lakes yielded the most. Distinct OTUs, including metazoan OTUs, numerically dominated pH extreme sites. Indicator OTUs included the diatom Pinnularia and unidentified opisthokonts (Fungi and Filasterea) in the extremely acidic environments, and the ciliate Frontonia across the extremely alkaline sites. Inferred from NMDS, pH explained only a modest fraction of the variation across the datasets, indicating that other factors influence the underlying community structure in these environments. The findings from this study suggest that the ability for eukaryotes to adapt to pH extremes over a broad range of values may be rare, but further study of taxa that can broadly adapt across diverse acidic and alkaline environments, respectively present good models for understanding adaptation and should be targeted for future investigations. PMID:23335919

  3. The FP7 ULTimateCO2 project: a study of the long term fate of CO2

    NASA Astrophysics Data System (ADS)

    Audigane, Pascal; Waldmann, Svenja; Pearce, Jonathan; Dimier, Alain; Le Gallo, Yann; Frykman, Peter; Maurand, Nicolas; Gherardi, Fabrizio; Yalamas, Thierry; Cremer, Holger; Spiers, Chris; Nussbaum, Christophe

    2014-05-01

    The objectives of the European FP7 ULTimateCO2 project are to study specific processes that could influence the long-term fate of geologically stored CO2, mainly: the trapping mechanisms occurring in the storage reservoir, the influence of fluid-rock interactions on mechanical integrity of caprock and well vicinity, and also the modifications induced at the regional scale (brine displacement, fault reactivation, hydrogeology changes...). A comprehensive approach combining laboratory experiments, numerical modeling and natural analogue studies is developed to assess all the processes mentioned above. A collection of data has been generated from natural and industrial (oil industry) analogues on the fluid flow and mechanical properties, structure, and mineralogy of faults and fractures that could affect the long-term storage capacity of underground CO2 storage sites. To address geochemical trapping at reservoir scale, an experimental approach is developed using sandstone core materials in batch reactive mode with CO2 and impurities at reservoir pressure and temperature conditions. Three inter-related lines of laboratory experiments investigate the long-term evolution of the mechanical properties and sealing integrity of fractured and faulted caprocks using Opalinus clay of Mont Terri Gallery (Switzerland), an analogue for caprock well investigated in the past for nuclear waste disposal purpose. To evaluate the interactions between CO2 (and formation fluid) and the well environment (formation, cement, casing) and to assess the consequences of these interactions on the transport properties of well materials, a 1 to 1 scale experiment has been set in the Mont Terri Gallery Opalinus clay to reproduce classical well objects (cemented annulus, casing and cement plug) perforating caprock formations. An extensive program of numerical modeling is also developed to calibrate, to reproduce and to extrapolate the experimental results at longer time scales including uncertainty assessment methods. www.ultimateco2.eu

  4. REPAIRING PEOPLE TRAJECTORIES BASED ON POINT Duc-Phu CHAU(1)(2)

    E-print Network

    Paris-Sud XI, Université de

    INTRODUCTION Nowadays video surveillance systems are applied worldwide in many different sites such as parking of interest. The solution to this issue lies in three words: intelligent video monitoring. Intelligent video systems belong to the domain that studies the content of a video. This term expresses a research direction

  5. Differential genotoxicity of diphenyl diselenide (PhSe)2 and diphenyl ditelluride (PhTe)2

    PubMed Central

    Meinerz, Daiane Francine; Allebrandt, Josiane; Mariano, Douglas O.C.; Waczuk, Emily P.; Soares, Felix Antunes

    2014-01-01

    Organoselenium compounds have been pointed out as therapeutic agents. In contrast, the potential therapeutic aspects of tellurides have not yet been demonstrated. The present study evaluated the comparative toxicological effects of diphenyl diselenide (PhSe)2 and diphenyl ditelluride (PhTe)2 in mice after in vivo administration. Genotoxicity (as determined by comet assay) and mutagenicicity were used as end-points of toxicity. Subcutaneous administration of high doses of (PhSe)2 or (PhTe)2 (500 µmol/kg) caused distinct genotoxicity in mice. (PhSe)2 significantly decreased the DNA damage index after 48 and 96 h of its injection (p < 0.05). In contrast, (PhTe) caused a significant increase in DNA damage (p < 0.05) after 48 and 96 h of intoxication. (PhSe)2 did not cause mutagenicity but (PhTe)2 increased the micronuclei frequency, indicating its mutagenic potential. The present study demonstrated that acute in vivo exposure to ditelluride caused genotoxicity in mice, which may be associated with pro-oxidant effects of diphenyl ditelluride. In addition, the use of this compound and possibly other related tellurides must be carefully controlled. PMID:24711962

  6. PhD in Management The PhD program in Management is

    E-print Network

    Stuart, Steven J.

    and IS or with high-quality faculty in entrepreneurship and strategic management as well as organizational behaviorPhD in Management The PhD program in Management is designed to provide advanced education currently features two distinct, focused tracks: (1) Supply Chain and Operations Management, and (2

  7. PhET Teacher Activities: Hooke's Law

    NSDL National Science Digital Library

    2012-09-25

    This two-hour activity for high school physics was created to accompany the PhET simulation Masses & Springs. In the first lesson, students will use the simulation to explore how displacement of a spring is mathematically related to the load applied to it. In the next day's exploration, learners analyze the energy of a mass oscillating on a spring by observing distribution and transfer of kinetic, elastic potential, and gravitational potential energy. Materials include learning goals, explicit directions for use of the simulation, homework problems, and answer key. The spring motion simulation (which is required to complete this activity) is available from PhET at: Masses & Springs. This lesson is part of the PhET (Physics Education Technology Project), a large collection of free interactive science simulations.

  8. College of Education PhD in Education

    E-print Network

    Van Stryland, Eric

    1 College of Education PhD in Education Exceptional Education Track Handbook A guide for doctoral students pursuing the PhD in Exceptional Education Lisa Dieker, PhD Wilfred Wienke, PhD Project LEAD ­ Leadership in Exceptional Education Advancing Diversity #12;2 Manuscript Preparation (2008) Kimberly Pawling

  9. 2011 Cecilia J. Hillard, PhD Douglas R. Campbell

    E-print Network

    2007 Jane Morley Kotchen, MD, MPH Julian H. Lombard, PhD Robert L. Truitt, PhD 2006 Mary Horowitz, MD Fujimoto, PhD Edward Stewart, MD Stuart Wilson, MD 1995 Charles Aprahamian, MD Walter Hogan, MD Neil Mandel, PhD 1994 Michael Keelan, Jr., MD Roland Pattillo, MD Jonathan Towne, MD 1993 James Cerletty, MD

  10. MD/PhD Program "Molecular Medicine" Hannover Medical School

    E-print Network

    Manstein, Dietmar J.

    __________________________________________________________________ 14 4. Organization of Educational Material________________________________________________ 15 5#12;#12;MD/PhD Program "Molecular Medicine" Hannover Medical School Report 2005 #12;#12;MD/Ph Chairman MD/PhD Program Carl-Neuberg Str. 1 30625 Hannover Tel: 0511-532-6656 immunologie@mh-hannover.de MD/Ph

  11. PH DEPENDENT TOXICITY OF FIVE METALS TO THREE MARINE ORGANISMS

    EPA Science Inventory

    The pH of natural marine systems is relatively stable; this may explain why metal toxicity changes with pH have not been well documented. However, changes in metal toxicity with pH in marine waters are of concern in toxicity testing. During porewater toxicity testing pH can chang...

  12. pH and Titratable Acidity

    NASA Astrophysics Data System (ADS)

    Sadler, George D.; Murphy, Patricia A.

    There are two interrelated concepts in food analysis that deal with acidity: pH and titratable acidity. Each of these quantities is analytically determined in separate ways and each has its own particular impact on food quality. Titratable acidity deals with measurement of the total acid concentration contained within a food (also called total acidity). This quantity is determined by exhaustive titration of intrinsic acids with a standard base. Titratable acidity is a better predictor of acid's impact on flavor than pH.

  13. Lawrence Goldstein, Ph.D.Adah Almutairi, Ph.D.Steffanie Strathdee, Ph.D. Tackling Alzheimer's With

    E-print Network

    Cai, Long

    's With Stem Cells Lawrence Goldstein, Ph.D., director of the new Sanford Stem Cell Clinical Center, stem cell-derived models of sporadic and hereditary Alzheimer's disease using induced pluripotent stem cells from patients with AD. These functional neurons in a dish promise to be an unprecedented tool

  14. Occurrence of the antidiabetic drug Metformin and its ultimate transformation product Guanylurea in several compartments of the aquatic cycle.

    PubMed

    Trautwein, Christoph; Berset, Jean-Daniel; Wolschke, Hendrik; Kümmerer, Klaus

    2014-09-01

    In 2030, the World Health Organization estimates that more than 350 million people will be diagnosed with diabetes. Consequently, Metformin - the biguanide drug of choice orally administered for diabetes type II - is anticipated to see a spike in production. Unlike many pharmaceutical drugs, Metformin (Met) is not metabolized by humans but passes through the body unchanged. Entering aquatic compartments, such as in sewage, it can be bacterially transformed to the ultimate transformation product Guanylurea (Gua). Sampling over one week (n=5) from a Southern German sewage treatment plant revealed very high average (AV) concentrations in influent (AVMet=111,800ng/L, AVGua=1300ng/L) and effluent samples (AVMet=4800ng/L, AVGua=44,000ng/L). To provide a more complete picture of the distribution and potential persistence of these compounds in the German water cycle, a new, efficient and highly sensitive liquid chromatography mass spectrometric method with direct injection was used for the measurement of Metformin and Guanylurea in drinking, surface, sewage and seawater. Limits of quantification (LOQ) ranging from 2-10ng/L allowed the detection of Metformin and Guanylurea in different locations such as: Lake Constance (n=11: AVMet=102ng/L, AVGua=16ng/L), river Elbe (n=12: AVMet=472ng/L, AVGua=9ng/L), river Weser (n=6: AVMet=349ng/L, AVGua=137ng/L) and for the first time in marine North Sea water (n=14: AVMet=13ng/L, AVGua=11ng/L). Based on daily water discharges, Metformin loads of 15.2kg/d (Elbe) and 6.4kg/d (Weser) into the North Sea were calculated. Lake Constance is used to abstract potable water which is further purified to be used as drinking water. A first screening of two tap water samples contained 2ng/L and 61ng/L of Metformin, respectively. The results of this study suggest that Metformin and Guanylurea could be distributed over a large fraction of the world's potable water sources and oceans. With no natural degradation processes, these compounds can be easily reintroduced to humans as they enter the food chain. PMID:24954924

  15. 17 CFR 240.15c3-1g - Conditions for ultimate holding companies of certain brokers or dealers (Appendix G to 17 CFR 240...

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...company may request Commission approval to reduce allowances for credit risk through the...of the results of funding and liquidity stress tests that the ultimate holding company...aware that an NRSRO has determined to reduce materially its assessment of the...

  16. 17 CFR 240.15c3-1g - Conditions for ultimate holding companies of certain brokers or dealers (Appendix G to 17 CFR 240...

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...company may request Commission approval to reduce allowances for credit risk through the...of the results of funding and liquidity stress tests that the ultimate holding company...aware that an NRSRO has determined to reduce materially its assessment of the...

  17. 17 CFR 240.15c3-1g - Conditions for ultimate holding companies of certain brokers or dealers (Appendix G to 17 CFR 240...

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ...company may request Commission approval to reduce allowances for credit risk through the...of the results of funding and liquidity stress tests that the ultimate holding company...aware that an NRSRO has determined to reduce materially its assessment of the...

  18. Nonlinear Partial Differential Equations The ultimate topic to be touched on in this book is the vast and active field of nonlinear

    E-print Network

    Olver, Peter

    , and secondly, nonlinear algebraic equations and nonlinear ordinary differential equations. Our presentationChapter 22 Nonlinear Partial Differential Equations The ultimate topic to be touched on in this book is the vast and active field of nonlinear partial differential equations. Leaving aside quantum

  19. "Our Ultimate Competition," a Speech by John Neufeld, and Readers' Responses to Neufeld's "Boys Lie" by Matthew Ellis, Jaime Miller and Liz Ackert.

    ERIC Educational Resources Information Center

    Moore, John Noell, Ed.

    2000-01-01

    Suggests the ultimate competition for writers of contemporary adolescent fiction is life--the world that children inhabit is getting stranger and stranger. Discusses parents' and adolescents' different reactions to the novel "Boys Lie," which addresses the issues of rape and sexual harassment. Presents reactions to the speech and the responses of…

  20. Tiffany Niemoller Eady, Ph.D. Major Professor: Nicolas G. Bazan, M.D., Ph.D.

    E-print Network

    Functionality May, 2007 Fang Liu, M.S. Major Professor: Miguel Pappolla, M.D., Ph.D. Dissertation: ContributionMay, 2011 Tiffany Niemoller Eady, Ph.D. Major Professor: Nicolas G. Bazan, M.D., Ph.D. Dissertation: Docosahexaenoic Acid, Neurolipidomics, and the Ischemic Penumbra of Stroke Hongbo He, Ph.D. Major Professor

  1. Roadmap: Public Health-Allied Health-Bachelor of Science in Public Health [PH-BSPH-PH-AHLT

    E-print Network

    Sheridan, Scott

    Semester Seven: [12 Credit Hours] PH 30002 Introductory Biostatistics 3 PH 44000 Health Disparities 3 CRoadmap: Public Health-Allied Health-Bachelor of Science in Public Health [PH-BSPH-PH-AHLT] College of Public Health Catalog Year: 2012-2013 Page 1 of 2 | Last Updated: 10-Apr-12/LNHD This roadmap

  2. Mohsen Akbari1 Ph.D. Candidate

    E-print Network

    Bahrami, Majid

    Mohsen Akbari1 Ph.D. Candidate Mechatronic System Engineering, School of Engineering Science, Simon Assistant Professor Mem. ASME Mechatronic System Engineering, School of Engineering Science, Simon Fraser Department of Mechanical Engineering, University of Victoria, Victoria, BC, V8W 2Y2, Canada Majid Bahrami

  3. Instructor: Steven Wisensale, Ph.D.

    E-print Network

    Holsinger, Kent

    Instructor: Steven Wisensale, Ph.D. Professor of Public Policy-HDFS Topics Covered: · Origins 3042- African American Studies Baseball and Society: Politics, Economics, Race and Gender Baseball and Society: Politics, Economics, Race and GenderSpring 2012Spring 2012 New CourseNew Course For more

  4. Ph.D. PSYCHOLOGY Application Checklist

    E-print Network

    Northern British Columbia, University of

    Ph.D. PSYCHOLOGY Application Checklist IMPORTANT NOTES 1. Please submit all Application Materials.D. in Psychology must have both a Bachelors and Masters degree, at least one of which must be in Psychology (Maximum 10 pages). GRE Test Scores: Applicants who do not have a Master's degree in Psychology must submit

  5. Optoelectronic pH Meter: Further Details

    NASA Technical Reports Server (NTRS)

    Jeevarajan, Antony S.; Anderson, Mejody M.; Macatangay, Ariel V.

    2009-01-01

    A collection of documents provides further detailed information about an optoelectronic instrument that measures the pH of an aqueous cell-culture medium to within 0.1 unit in the range from 6.5 to 7.5. The instrument at an earlier stage of development was reported in Optoelectronic Instrument Monitors pH in a Culture Medium (MSC-23107), NASA Tech Briefs, Vol. 28, No. 9 (September 2004), page 4a. To recapitulate: The instrument includes a quartz cuvette through which the medium flows as it is circulated through a bioreactor. The medium contains some phenol red, which is an organic pH-indicator dye. The cuvette sits between a light source and a photodetector. [The light source in the earlier version comprised red (625 nm) and green (558 nm) light-emitting diodes (LEDs); the light source in the present version comprises a single green- (560 nm)-or-red (623 nm) LED.] The red and green are repeatedly flashed in alternation. The responses of the photodiode to the green and red are processed electronically to obtain the ratio between the amounts of green and red light transmitted through the medium. The optical absorbance of the phenol red in the green light varies as a known function of pH. Hence, the pH of the medium can be calculated from the aforesaid ratio.

  6. Ph.D. Thesis Frantz Brstrup

    E-print Network

    Ph.D. Thesis by Frantz Bræstrup Roskilde University, Department of Chemistry and Life Sciences of Denmark, Fuel Cells and Solid State Chemistry Division. June 2009 New Methods for Removal of Pollutants from Exhaust Gases #12;#12;Resum´e Forskellige typer af oxider med spinelstruktur er blevet undersøgt

  7. Darlene Ketten, Ph.D. Misconceptions

    E-print Network

    :FionaWatson/Survival Darlene Ketten s the world's foremost expert on marine mammal ears, Darlene R. Ketten, Ph.D. and Senior biomedical imaging, forensics and biophysical models of hearing in both humans and marine mammals. Her research focuses on two areas: how structural differences in marine vs. terrestrial mammal ears relate

  8. Scholarly Integrity Julie Simpson, Ph.D.

    E-print Network

    New Hampshire, University of

    Board site #12;Upcoming RCR Trainings New PhD student required training ~ Friday, September 27, 12 & scholarship Variable (2-3) credit Fulfills UNH doctoral and NSF RCR training requirements Tuesdays, 4 Public trust #12;Responsible Conduct of Research (RCR) & Scholarship Program Standing faculty committee

  9. 12 August 2001 quant-ph/0111069

    E-print Network

    Meyer, David A.

    12 August 2001 quant-ph/0111069 QUANTUM COMPUTING CLASSICAL PHYSICS David A. Meyer Project--quantum lattice gas automata--and show how to implement them efficiently on standard quantum computers. 2001 computing classical physics David A. Meyer 1. Introduction Quantum computing originated with Feynman

  10. AUTOMNE 2013 PhD EN COMMUNICATION

    E-print Network

    Parrott, Lael

    AUTOMNE 2013 PhD EN COMMUNICATION LUNDI MARDI MERCREDI JEUDI VENDREDI 9:00 � 12 Forum Doctoral Prof : Thierry Bardini Et Gaby Hsab UQAM Communication organisationnelle William Buxton (hors campus) Séminaire spécialisé : Médias mobiles et communication : approches

  11. PhD studentship: Population genomics of

    E-print Network

    Uppsala Universitet

    the acidification of the World's oceans. In the 250 years since the onset of the industrial revolution, atmospheric pessimistic of IPCC model scenarios. How will life in the oceans adapt to this changing environment CO2 levels have risen from 280 to 381 parts per million and average ocean pH has fallen from 8

  12. What My Ph.D. Taught Me

    ERIC Educational Resources Information Center

    Levenstein, Jessica

    2013-01-01

    The author started in the Ph.D. program in comparative literature at Princeton in 1992, a year after she graduated from college. She fell in love with mythology and the classical traditions and find herself teaching literature. In the remainder of her time at Princeton, she precepted for four or five more classes, got the chance to join the…

  13. Monitoring fetal pH by telemetry

    NASA Technical Reports Server (NTRS)

    Blum, A.; Donahoe, T.; Jhabvala, M. D.; Ryan, W.

    1980-01-01

    Telemetry unit has been developed for possible use in measuring scalp-tissue pH and heart rate of unborn infant. Unit radius data to receiver as much as 50 ft. away. Application exists during hours just prior to childbirth to give warning of problems that might require cesarean delivery.

  14. Curriculum Vitae GUOFAN SHAO, Ph.D.

    E-print Network

    Sinica (China), Journal of Forestry Research (China), Forestry ­ International Journal of Forest Research1 Curriculum Vitae GUOFAN SHAO, Ph.D. 1. Current Employment and Posts Professor, Purdue University-1989, Chinese Academy of Sciences. Supervised jointly Prof. Z. Wang. Partial research was accomplished

  15. Teaching Physics Using PhET Simulations

    ERIC Educational Resources Information Center

    Wieman, C. E.; Adams, W. K.; Loeblein, P.; Perkins, K. K.

    2010-01-01

    PhET Interactive Simulations (sims) are now being widely used in teaching physics and chemistry. Sims can be used in many different educational settings, including lecture, individual or small group inquiry activities, homework, and lab. Here we will highlight a few ways to use them in teaching, based on our research and experiences using them in…

  16. Ph.D. Assessment Form Student Name

    E-print Network

    Ph.D. Assessment Form Student Name: Major Advisor: Date: Outcome 1: Graduates will be able of cognitive and academic skills through their ability to recall and integrate knowledge from their specialty, including both written and oral parts, which assesses the student's breadth of knowledge in their discipline

  17. PH-315 A. La Rosa TRANSISTORS and

    E-print Network

    PH-315 A. La Rosa TRANSISTORS and TRANSISTOR AMPLIFIERS I. PURPOSE To familiarize with the characteristics of transistors, how to properly implement its DC bias, and illustrate its application as small signal amplifiers. The bipolar junction transistor as well as the field effect transistor

  18. Quasi-distributed pH sensor

    NASA Astrophysics Data System (ADS)

    Elliott, Nicholas J.; Wallace, Peter A.; Uttamlal, Mahesh; Smith, Sheila; Campbell, Michael

    1999-12-01

    A Quasi-distributed pH sensing system based on Optical Time Domain Reflectometry (OTDR) was developed to determine the spatial and intensity information from fluorescence signals coupled back into a single fiber. The evanescent wave due to a 488 nm light pulse from a N2 pumped dye laser was used to excite a pH sensitive fluorophore and the emission around 515 nm was detected. A 3dB Y-coupler was used to convey excitation light to the sensing sites and to deliver emission signals from these sites back to a filtered photomultiplier tube. Data collection was performed using a HP 54540A 500 MHz digital scope and analysis was carried out using a dedicated Pentium 166 MHz PC. A reproducible laboratory fabrication process was developed to produce sensing sites at discrete intervals along the length of the fiber. A polishing process carefully removed the cladding at each sensing site and photo- polymerization was then used to covalently bind the fluorophore fluorescein with a co-polymer directly onto the site. The results show the sensors performance over a range of pH4-pH10 with a pKa value of 6.3. The present system was chosen to have sites 10 m apart, however, based on the propagation rate of 5 ns m-1 for light in the fiber and 10 ns for the fluorescence lifetime, a resolution of approximately 1 m is possible.

  19. Curriculum vitae RAJINI RAO, Ph.D.

    E-print Network

    Rao, Rajini

    1 Curriculum vitae RAJINI RAO, Ph.D. 12 November, 2011 DEMOGRAPHIC INFORMATION CURRENT APPOINTMENT PEER-REVIEWED PUBLICATIONS 1. Holzschu, D., Principio, L., Conklin, K.T., Hickey, D.R., Short, S., Rao, 7125-7131 2. Rao, R., Perlin, D.S., and Senior, A.E. (1987) The defective proton-ATPase of uncA mutants

  20. The prognostic value of blood pH and lactate and metformin concentrations in severe metformin-associated lactic acidosis

    PubMed Central

    2013-01-01

    Aims Analysis of the prognostic values of blood pH and lactate and plasma metformin concentrations in severe metformin-associated lactic acidosis may help to resolve the following paradox: metformin provides impressive, beneficial effects but is also associated with life-threatening adverse effects. Research design and methods On the basis of 869 pharmacovigilance reports on MALA with available data on arterial pH and lactate concentration, plasma metformin concentration and outcome, we selected cases with a pH?10 mmol/L. Outcomes were compared with those described for severe metformin-independent lactic acidosis. Results Fifty-six patients met the above-mentioned criteria. The mean arterial pH and lactate values were 6.75?±?0.17 and 23.07?±?6.94 mmol/L, respectively. The survival rate was 53%, even with pH values as low as 6.5 and lactate and metformin concentrations as high as 35.3 mmol/L and 160 mg/L (normal?pH and lactate concentration. The mean metformin concentration was higher in patients who subsequently died but this difference was due to a very high value (188 mg/L) in one patient in this group, in whom several triggering factors were combined. Sepsis, multidrug overdoses and the presence of at least two triggering factors for lactic acidosis were observed significantly more frequently in non-survivors (p?=?0.007, 0.04, and 0.005, respectively). This contrasts with a study of metformin-independent lactic acidosis in which there were no survivors, despite less severe acidosis on average (mean pH: 6.86). Conclusions In 56 cases of severe metformin-associated lactic acidosis, blood pH and lactate did not have prognostic value. One can reasonably rule out the extent of metformin accumulation as a prognostic factor. Ultimately, the determinants of metformin-associated lactic acidosis appear to be the nature and number of triggering factors. Strikingly, most patients survived - despite a mean pH that is incompatible with a favorable outcome under other circumstances. PMID:23587368

  1. Variation in hydraulic conductivity with decreasing pH in a biologically-clogged porous medium (Invited)

    NASA Astrophysics Data System (ADS)

    Altman, S. J.; Kirk, M. F.; Santillan, E. U.; McGrath, L. K.

    2013-12-01

    Microbial biomass can clog porous media and ultimately affect both structural and mineral trapping of CO2 in geological carbon storage reservoirs. Whether biomass can remain intact following a sudden decrease in groundwater pH, a geochemical change associated with CO2 injection, is unclear. We examined this question using twelve biologically-active and three control column-reactor experiments. Cell abundance and distribution was monitored using confocal microscopy, plating, and direct counting. Hydraulic conductivity (K) was monitored using pressure sensors. Growth occurred for four days at neutral pH. During that time, K within the clogged portion of the reactors decreased from 0.013 to 0.0006 cm s-1 on average, a 1.47 log reduction. Next, the pH of the inflowing aqueous medium was lowered to pH 4 in six experiments and pH 5.7 in six experiments. As a result, K increased in five of the pH 4 experiments and two of the pH 5.7 experiments. Despite this increase, however, the columns remained largely clogged. Compared to pre-inoculation K values, log reductions averaged 1.13 and 1.44 in pH 4 and pH 5.7 experiments, respectively. Our findings show that biomass can largely remain intact following acidification and continue to reduce K, even when considerable cell stress and death occurs. This material is based upon work supported as part of the Center for Frontiers of Subsurface Energy Security, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Award Number DE-SC0001114. Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000.

  2. Ultimate selenium(IV) monitoring and removal from water using a new class of organic ligand based composite adsorbent.

    PubMed

    Awual, Md Rabiul; Yaita, Tsuyoshi; Suzuki, Shinichi; Shiwaku, Hideaki

    2015-06-30

    This work reports the selenium (Se(IV)) detection and removal from water by ligand functionalized organic-inorganic based novel composite adsorbent. The composite adsorbent was prepared by direct immobilization of N,N'-di(3-carboxysalicylidene)-3,4-diamino-5-hydroxypyrazole onto the mesoporous silica monolith. The adsorbent exhibited distinct color change in the presence of various concentrations of Se(IV). This was characterized by UV-vis spectroscopy, and the color change was observed by naked-eye observation. The detection limit was determined to be 1.14?g/L. The effect of solution pH, interferential metal ions, contact time, initial Se(IV) concentration, and adsorbent regeneration were evaluated. The maximum sorption capacity was determined based on the initial concentration. The data fitted well to the Langmuir isotherm model, and the maximum Se(IV) sorption capacity was 111.12mg/g. The presence of diverse competing ions did not affect the Se(IV) sorption capacity, and the adsorbent had almost no sorption capacity for these coexisting ions, which suggests the high selectivity to Se(IV) ions. The adsorbed Se(IV) was eluted with suitable eluent (0.10M NaOH) and simultaneously regenerated into the initial form for the next operation. The excellent reusability of the adsorbent was justified after eight consecutive sorption-elution-regeneration cycles. The proposed adsorbent is cost-effective and environmentally friendly and a potential candidate for treatment of water containing Se(IV). PMID:25771216

  3. The panacea toolbox of a PhD biomedical student.

    PubMed

    Skaik, Younis

    2014-01-01

    Doing a PhD (doctor of philosophy) for the sake of contribution to knowledge should give the student an immense enthusiasm through the PhD period. It is the time in one's life that one spends to "hit the nail on the head" in a specific area and topic of interest. A PhD consists mostly of hard work and tenacity; however, luck and genius might also play a little role. You can pass all PhD phases without having both luck and genius. The PhD student should have pre-PhD and PhD toolboxes, which are "sine quibus non" for getting successfully a PhD degree. In this manuscript, the toolboxes of the PhD student are discussed. PMID:25674150

  4. The panacea toolbox of a PhD biomedical student

    PubMed Central

    Skaik, Younis

    2014-01-01

    Doing a PhD (doctor of philosophy) for the sake of contribution to knowledge should give the student an immense enthusiasm through the PhD period. It is the time in one’s life that one spends to “hit the nail on the head” in a specific area and topic of interest. A PhD consists mostly of hard work and tenacity; however, luck and genius might also play a little role. You can pass all PhD phases without having both luck and genius. The PhD student should have pre-PhD and PhD toolboxes, which are “sine quibus non” for getting successfully a PhD degree. In this manuscript, the toolboxes of the PhD student are discussed. PMID:25674150

  5. PhD job market: professional trajectories and incentives during the PhD

    Microsoft Academic Search

    V. Mangematin

    2000-01-01

    It is becoming more and more difficult for PhD graduates to find a job corresponding to their qualifications. Stephan and Levin have shown that this situation weakens the implicit contract between PhD students (or post-doc) and the research team in which they are doing their research. This weakness of the implicit contract may slow down scientific production because of the

  6. Highlights From PhUn Week 2007

    NSDL National Science Digital Library

    2008-02-01

    This is an article from The Physiologist. "More than 100 APS physiologists volunteered their time in reaching out to more than 3000 students last November during Physiology Understanding Week (PhUn Week), the APS member-based annual outreach program to local area K-12 schools (http://www.PhUnWeek.org). APS members partnered with more than 70 teachers and science educators from across the nation to develop engaging classroom or campus presentations for students at all grade levels, from day care through twelfth grades. The following vignettes are only a few samples of the excitement and fun generated by the focus on the physiology of health and exercise during the first week in November. All events with the primary APS member and lead teacher coordinators are listed in Table 1.".

  7. Robert S. Kerbel, PhD

    Cancer.gov

    After graduating from the University of Toronto, Dr. Robert Kerbel commenced graduate studies receiving a PhD in 1972; he then undertook postdoctoral training in London after which he started his independent research program in 1975 at Queen's University in Kingston, in the Cancer Research Laboratories, becoming its Director in 1981. In 1985 he was recruited to develop and direct a cancer biology research division at Mt.

  8. Hua Zhang, PhD, Biologist

    Cancer.gov

    Hua Zhang received his Bachelor of Medicine at Shanghai Second Medical University then a PhD in Microbiology and Immunology at the University of Arizona. Dr. Zhang has had a longstanding interest in the development of immunotherapies for cancer. He first postdoctoral fellowship was in the Department of Chemical Engineering at the University of Texas where he worked to develop scFv antibody derived biologics (Zhang et al, Cancer Research 1995) and then he subsequently studied with Dr.

  9. Not Your Father's Ph.D.

    ERIC Educational Resources Information Center

    Withrow, Brandon G.

    2008-01-01

    This article describes how the author, a devoted blogger, confronts his fear that his virtual life is damaging his career prospects in academe. As a new Ph.D. in religious studies, the author has every reason to believe he will find a tenure-track job. He has read the numbers and know that, on average, job candidates spend two to five years in…

  10. PH 501 Philosophy of Christian Religion

    Microsoft Academic Search

    George Ille

    2003-01-01

    Aristotle, Categories, Section I. Translated by E. M. Edghill; Provided by The Internet Classics Archive. Available online at http:\\/\\/classics.mit.edu\\/\\/Aristotle\\/categories.html Hasker, William, Metaphysics, Downers Grove, IVP, 1983. Helm, Paul, Objective Knowledge, Leicester: InterVarsity Press, 1987. - selections Ille, George, Hermeneutical Explorations of Agency as Prolegomena for a Theological Epistemology, PhD Thesis, King’s College, University of London, 2000). – selections (provided in

  11. Highlights From PhUn Week 2009

    NSDL National Science Digital Library

    2010-04-01

    This is an article from The Physiologist highlighting Physiology Understanding (PhUn) Week 2009, which was held the first week of November and reached nearly 10,000 students from kindergarten through twelfth grade. "Forty events across the nation were coordinated by more than 250 APS members and scientists who volunteered their expertise and time to work with close to 170 teachers and science educators across 24 states and Puerto Rico."

  12. Daria Narmoneva, PhD, MS

    Cancer.gov

    Dr. Daria Narmoneva received her MS degree in physics from the Moscow Institute in Physics and Technology, Moscow, Russia. She received her Ph.D. degree in biomedical engineering from Duke University, where she worked with Dr. Lori Setton in the cartilage mechanics laboratory. After graduating from Duke University in 1999, Dr. Narmoneva completed her postdoctoral training in bioengineering at the Massachusetts Institute of Technology in the laboratory of Dr. Roger Kamm (2000-2001).

  13. Asad Umar, DVM, PhD

    Cancer.gov

    Dr. Asad Umar received his PhD in Biochemistry and Immunology at the Johns Hopkins University in Baltimore, MD, in 1993. He conducted his postdoctoral training in the laboratories of Patricia Gearhart in Baltimore, MD and Thomas Kunkel at the National Institutes of Environmental Health Sciences in Research Triangle Park, NC. Dr. Umar's main scientific interest is to understand the molecular pathways during gastrointestinal carcinogenesis and applying molecularly targeted and immunologic interventions to prevent cancer.

  14. Steven Highfill PhD, Postdoctoral Fellow

    Cancer.gov

    Steven Highfill received his Bachelor of Science in Biology at the University of South Florida (USF) and pursued research at the Moffitt Cancer Research Center, which primarily focused on studying the molecular interactions of a novel gene (LRBA) implicated in cancer cell growth and survival. Steven then received his Ph.D. from the Microbiology, Immunology, and Cancer Biology (MICaB) graduate program at the University of Minnesota under the direction of Dr. Bruce Blazar.

  15. Peter F. Carmeliet, MD, PhD

    Cancer.gov

    Dr. Peter Carmeliet is Director of the VIB — Vesalius Research Center, at the University of Leuven in Belgium. He graduated as Doctor in Medicine in 1984, and completed his Ph.D. in Medicine in 1989. After his return to Leuven in 1992, Dr. Carmeliet started his own research group with a focus on how blood vessels grow (angiogenesis) in health and disease. By developing transgenic mice lacking VEGF, he discovered that VEGF is a key player in angiogenesis. Dr.

  16. PhET: Energy Skate Park

    NSDL National Science Digital Library

    Students explore conservation of energy by building ramps, jumps, and tracks for a skateboarder. The relationship of kinetic and potential energy becomes clear through charts of energy vs. time and energy vs. position. The skater can be transported to different planets to illustrate the effects of changing the gravitational constant. This item is part of a larger collection of simulations developed by the Physics Education Technology project (PhET). The simulations are animated, interactive, and game-like environments.

  17. PhET: Forces in 1 Dimension

    NSDL National Science Digital Library

    Students use the mouse to move objects of varying mass along a 1-D path. The simulation charts P-T, V-T and acceleration graphs as the students control applied force, friction, and gravitational constants. This item is part of a larger collection of simulations developed by the Physics Education Technology project (PhET). The no-cost simulations are animated, interactive, and game-like environments in which students learn through exploration.

  18. Negli ultimi tempi si fa un gran parlare di HTML5 (e CSS3)... Sono solo le ultime versioni degli standard HTML (e CSS) o c'

    E-print Network

    Goy, Anna

    1 Negli ultimi tempi si fa un gran parlare di HTML5 (e CSS3)... Sono solo le ultime versioni degli standard HTML (e CSS) o c'è qualcosa di più?!? HTML5 è una specifica di HTML che ha introdotto nel HTML5 - I HTML5 è una specifica di HTML che ha introdotto nel linguaggio funzionalità che vanno ben oltre il

  19. Single current sensor technique in the DC-link of three-phase PWM-VS inverters. A review and the ultimate solution

    Microsoft Academic Search

    F. Blaabjerg; J. K. Pedersen; Ulrik Jaeger; Paul Thoegersen

    1996-01-01

    This paper proposes an ultimate solution for reconstruction of three phase-currents in a PWM-voltage source inverter by one current sensor in the DC-link, and it gives a review of existing methods in literature and patents. The solution offers fully protection of the inverter including shoot-through of the DC-link, short-circuit of the output phases and earth faults with both low and

  20. PhET Simulation: Build An Atom

    NSDL National Science Digital Library

    This simulation is designed to help learners visualize atomic structure, as they drag protons, neutrons, and electrons to construct an atom. As particles are moved into place in the nucleus or the electron orbits, the simulation automatically displays the net charge, mass number, atomic symbol, and name of the element. After practicing with atom-building, users can test their skills against the clock in a game with four levels of increasing difficulty. See Related Materials for a lesson plan and student guide developed by the PhET project specifically for use with Build An Atom. The atom building simulation, which must be open and displayed to complete this activity, is available from PhET at: Build An Atom. This lesson is part of PhET (Physics Education Technology Project), a large collection of free interactive simulations for science education.

  1. The pH of Enceladus' ocean

    E-print Network

    Glein, Christopher; Waite, Hunter

    2015-01-01

    Observational data from the Cassini spacecraft are used to obtain a chemical model of ocean water on Enceladus. The model indicates that Enceladus' ocean is a Na-Cl-CO3 solution with an alkaline pH of ~11-12. The dominance of aqueous NaCl is a feature that Enceladus' ocean shares with terrestrial seawater, but the ubiquity of dissolved Na2CO3 suggests that soda lakes are more analogous to the Enceladus ocean. The high pH implies that the hydroxide ion should be relatively abundant, while divalent metals should be present at low concentrations owing to buffering by clays and carbonates on the ocean floor. The high pH is interpreted to be a key consequence of serpentinization of chondritic rock, as predicted by prior geochemical reaction path models; although degassing of CO2 from the ocean may also play a role depending on the efficiency of mixing processes in the ocean. Serpentinization leads to the generation of H2, a geochemical fuel that can support both abiotic and biological synthesis of organic molecule...

  2. PhET Teacher Activities: Modeling Isotopes

    NSDL National Science Digital Library

    2011-07-18

    This lesson plan was created specifically to accompany the PhET simulation "Isotopes and Atomic Mass". It provides explicit guidance for modeling atoms and their variant isotopes. As students add neutrons to the nuclear model, they can see a relationship between the stability of the atom and its abundance in nature. The model makes it easy to visualize that atoms of one element always have the same number of protons, but can have various numbers of neutrons. It will help students differentiate Atomic Number (number of protons in the nucleus) from Mass Number (the number of protons and neutrons. The isotope simulation, which must be open and displayed to complete this activity, is available from PhET at: Isotopes and Atomic Mass. This lesson is part of PhET (Physics Education Technology Project), a large collection of free interactive simulations for science education.

  3. Variation in Biofilm Stability with Decreasing pH Affects Porous Medium Hydraulic Properties

    NASA Astrophysics Data System (ADS)

    Kirk, M. F.; Santillan, E. F.; McGrath, L. K.; Altman, S. J.

    2010-12-01

    Changes to microbial communities caused by subsurface CO2 injection may have many consequences, including possible impacts to CO2 transport. We used column experiments to examine how decreasing pH, a geochemical change associated with CO2 injection, will affect biofilm stability and ultimately the hydraulic properties of porous media. Columns consisted of 1 mm2 square capillary tubes filled with 105-150 µm diameter glass beads. Artificial groundwater medium containing 1 mM glucose was pumped through the columns at a rate of 0.01 mL/min (q = 14.4 m/day; Re = 0.03). Columns were inoculated with 3 × 10^8 CFU (avg.) of Pseudomonas fluorescens, a model biofilm former, transformed with a green fluorescent protein. Biomass distribution and transport was examined using scanning laser confocal microscopy and effluent plating. Variation in the bulk hydraulic properties of the columns was measured using manometers. In an initial experiment, biofilm growth was allowed to occur for seven days in medium with pH 7.3. Within this period, cells uniformly coated bead surfaces, effluent cell numbers stabilized at 1 × 10^9 CFU/mL, and hydraulic conductivity (K) decreased 77%. Next, medium with pH 4 was introduced. As a result, biomass within the reactor redistributed from bead surfaces to pores, effluent cell numbers decreased to 3 × 10^5 CFU/mL, and K decreased even further (>94% reduction). This decreased K was maintained until the experiment was terminated, seven days after introducing low pH medium. These results suggest that changes in biomass distribution as a result of decreased pH may initially limit transport of solubility-trapped CO2 following CO2 injection. Experiments in progress and planned will test this result in more detail and over longer periods of time. This material is based upon work supported as part of the Center for Frontiers of Subsurface Energy Security, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Award Number DE-SC0001114. Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-AC04-94AL85000.

  4. ARC Funded PhD Scholarship in Seismology

    E-print Network

    Rawlinson, Nick

    ARC Funded PhD Scholarship in Seismology Location: Research School of Earth Sciences, Australian-qualified and motivated stu- dents wishing to pursue a PhD degree in seismology. Successful applicants will join a group

  5. Ris-PhD-Report Thermocleavable Conjugated Polymers -

    E-print Network

    Risø-PhD-Report Thermocleavable Conjugated Polymers - Synthesis and photovoltaic applications Martin Helgesen Risø-PhD-54(EN) October 2009 #12;Thermocleavable Conjugated Polymers Synthesis, University of Copenhagen #12;Author: Martin Helgesen able Conjugated Polymers ­ Synthesis and photovoltaic

  6. 21 CFR 876.1400 - Stomach pH electrode.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Diagnostic Devices § 876.1400 Stomach pH electrode. (a) Identification. A stomach pH...

  7. 21 CFR 876.1400 - Stomach pH electrode.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Diagnostic Devices § 876.1400 Stomach pH electrode. (a) Identification. A stomach pH...

  8. 21 CFR 876.1400 - Stomach pH electrode.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Diagnostic Devices § 876.1400 Stomach pH electrode. (a) Identification. A stomach pH...

  9. 21 CFR 876.1400 - Stomach pH electrode.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Diagnostic Devices § 876.1400 Stomach pH electrode. (a) Identification. A stomach pH...

  10. 21 CFR 876.1400 - Stomach pH electrode.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Diagnostic Devices § 876.1400 Stomach pH electrode. (a) Identification. A stomach pH...

  11. Frequently Asked Questions for Parents of Children with PH

    MedlinePLUS

    ... Young Adult Issues Dating and Relationships College and Scholarships Family Planning Considering Adoption with PH The Adoption ... Young Adult Issues Dating and Relationships College and Scholarships Family Planning Considering Adoption with PH The Adoption ...

  12. Acidogenesis of dairy wastewater at various pH levels

    Microsoft Academic Search

    H.-Q. Yu; H. H. P. Fang

    2002-01-01

    Continuous experiments were conducted to study the influence of pH in the range 4.0-6.5 on the acidification of dairy wastewater at 37°C with 12 hours of hydraulic retention in an upflow reactor. Results showed that degradation of dairy pollutants increased with pH from pH 4.0 to 5.5. At pH 5.5, 95% of carbohydrate, 82% of protein and 41% of lipid

  13. Intracellular pH Sensors: Design Principles and Functional Significance

    NSDL National Science Digital Library

    2007-02-01

    Changes in intracellular pH regulate many cell behaviors, including proliferation, migration, and transformation. However, our understanding of how physiological changes in pH affect protein conformations and macromolecular assemblies is limited. We present design principles, current modeling predictions, and examples of pH sensors or proteins that have activities or ligand-binding affinities that are regulated by changes in intracellular pH.

  14. AU FEBRUARY 2012 Open House: The AU Ph. D.

    E-print Network

    this digital magazine is added to the array of services available to the PhD House community. In this articleAU FEBRUARY 2012 1 OPEN house Open House: The AU Ph. D. House Magazine By Alejandra ZaragozaD House Directory By The PhD House Page 9/10 Open House - The AU PhD House Activity Group Magazine Year 1

  15. Vacuolar pH in radish cotyledonal mesophyll cells

    Microsoft Academic Search

    D. Strack; V. Sharma; H. Felle

    1987-01-01

    The vacuolar pH in cotyledonal mesophyll cells from radish (Raphanus sativus L. var. sativus) seedlings was determined from vacuoles, isolated from protoplasts through osmotic shock, by means of measurement of vacuole extracts with a pH meter and the “methylamine method”, and gave mean pH values of 6.28 and 6.26, respectively. Direct in situ measurements of the vacuolar pH from intact

  16. Effect of lansoprazole on intragastric pH

    Microsoft Academic Search

    Michio Hongo; Shuichi Ohara; Yorihisa Hirasawa; Shinichiro Abe; Shigeru Asaki; Takayoshi Toyota

    1992-01-01

    Lansoprazole is a newly developed proton pump inhibitor. The purpose of this study was to determine whether morning or evening dosage gave better control of 24-hr intragastric pH. In this study, we examined the antisecretory effect of lansoprazole by repeated intragastric pH monitoring on four occasions in eight normal subjects and compared median 24-hr pH values and pH threshold time

  17. Conceptual model of digital pH meter in telemedicine

    Microsoft Academic Search

    Rabiya Rehman; Murtaza Halai

    2011-01-01

    pH level plays a vital role in the maintenance of human metabolic activity. pH levels of different bodily fluids i.e. blood, serum, urine etc are important parameters in diagnosing any condition, as unbalanced pH levels can interrupt all cellular activities and corrodes body tissues. In this paper a concept of implementing pH parameters in HL7v3 that is XML based is

  18. Stanley K. Yoo, BS Richard Watts, PhD

    E-print Network

    Zabih, Ramin

    .R.P.; manuscript editing, S.K.Y., Y.W., M.R.P.; manuscript revi- sion/review and final version approval, Y.W., MStanley K. Yoo, BS Richard Watts, PhD Priscilla A. Winchester, MD Ramin Zabih, PhD Yi Wang, PhD Martin R. Prince, MD, PhD Index terms: Magnetic resonance (MR), image processing, 9 .129422 , .129423

  19. PROGRESSION THROUGH THE PROGRAM Pharm.D./Ph.D. Curriculum

    E-print Network

    Neimark, Alexander V.

    SECTION II PROGRESSION THROUGH THE PROGRAM OVERVIEW Pharm.D./Ph.D. Curriculum First Year: The first year of the Pharm.D./Ph.D. curriculum begins during the 3rd Professional (P3) Year of the Pharm.D. Program. The Ph.D. classes listed below are in addition to the required Pharm.D. classes. Students must

  20. Acid Rain, pH & Acidity: A Common Misinterpretation.

    ERIC Educational Resources Information Center

    Clark, David B.; Thompson, Ronald E.

    1989-01-01

    Illustrates the basis for misleading statements about the relationship between pH and acid content in acid rain. Explains why pH cannot be used as a measure of acidity for rain or any other solution. Suggests that teachers present acidity and pH as two separate and distinct concepts. (RT)

  1. Existing Facility (Ph I) Includes Water intake, screens,

    E-print Network

    for proposed Ph II #12;Existing Facility (Ph I) Includes Ozone water treatment and settling pond sufficient#12;#12;#12;Existing Facility (Ph I) Includes Water intake, screens, and pumps sufficient) Walla Walla Hatchery Facility Costs #12;Completed Master Plan August 2008 ISRP review and CTUIR

  2. Learning Outcomes Assessment Report for Mathematics (PhD)

    E-print Network

    2010-03-22

    provide it with active involvement in current developments in many major areas of ... Critical Thinking: Math PhD students will be able to think critically and creatively ... taking the Abstract Algebra PhD qualifying exam;taking supervised PhD ...

  3. Lisa B. Beever, PhD, AICP September 28, 2009

    E-print Network

    Demers, Nora Egan

    Lisa B. Beever, PhD, AICP September 28, 2009 Estero Bay Watershed Public SymposiumEstero Bay- September 2004 #12;Chlorophyll a #12;Ammonia #12;Nitrate/Nitrite #12;Dissolved Oxygen #12;Turbidity #12 B. Beever, PhD, AICPDirector: Lisa B. Beever, PhD, AICP Deputy Director: Liz Donley,Deputy Director

  4. Steel slag raises pH of greenhouse substrates

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Dolomitic lime (DL) is the primary liming agent used for increasing pH in peatmoss-based substrates. Steel slag (SS) is a byproduct of the steel manufacturing industry that has been used to elevate field soil pH. The objective of this research was to determine the pH response of a peatmoss-based g...

  5. CURRICULUM VITAE Karen Hutchinson, PT, DPT, PhD

    E-print Network

    Guenther, Frank

    D, Susan Harkema, PhD, Andrei Krassioukov , MD, PhD Cardiovascular Parameters and Quality of Life Outcomes and Rehabilitation Sciences: Sargent College Department of Physical Therapy and Athletic Training Physical Therapy, Ph.D., March 2000 The Ohio State University Columbus, OH 1990 - 1993 Neurology, Stroke and Balance

  6. September 2010 Antonio J. Giraldez, Ph.D. CURRICULUM VITAE

    E-print Network

    Giraldez, Antonio J.

    September 2010 Antonio J. Giraldez, Ph.D. 1 CURRICULUM VITAE Name: Antonio J. Giraldez, Ph.D. Term Fellowship. CBMSO. UAM. GRANT HISTORY #12;September 2010 Antonio J. Giraldez, Ph.D. 2 Current Grants Agency: NIH I.D.# R01 GM081602-01 Title: "The Role of microRNAs in Vertebrate Development" P.I.: Antonio

  7. Speech and Language Sciences PhDandMScResearchProgrammes

    E-print Network

    Hickman, Mark

    1 Audiology Speech and Language Sciences PhDandMScResearchProgrammes #12;#12;Professor Mike Robb for doctoral-level research in speech and language sciences or audiology will be a life-enhancing experience Applying to the PhD in Speech and Language Sciences or the PhD in Audiology 4 Entry requirements 4 Duration

  8. Jane P. Ko, MD Henry Rusinek, PhD

    E-print Network

    Sclaroff, Stan

    Jane P. Ko, MD Henry Rusinek, PhD Erika L. Jacobs, MD James S. Babb, PhD Margrit Betke, PhD Georgeann McGuinness, MD David P. Naidich, MD Index terms: Computed tomography (CT), image processing, 60, 60.12117 Published online 10.1148/radiol.2283020059 Radiology 2003; 228:864­870 Abbreviations: FTM

  9. Investigating pH of common household substances

    NSDL National Science Digital Library

    This activity is a classroom lab where students test common household liquids for pH level on the pH continuum, 1-14. They compare and contrast everyday use of the liquids, and how this relates to the liquids' pH property.

  10. Ambulatory esophageal pH monitoring using a wireless system

    Microsoft Academic Search

    John E Pandolfino; Joel E Richter; Tina Ours; Jason M Guardino; Jennifer Chapman; Peter J Kahrilas

    2003-01-01

    ObjectivesLimitations of catheter-based esophageal pH monitoring are discomfort, inconvenience, and interference with normal activity. An alternative to conventional pH monitoring is the wireless Medtronic Bravo pH System. The aim of this study was to evaluate the safety, performance, and tolerability of this system.

  11. Combined effect of acetic acid, pH and ethanol on intracellular pH of fermenting yeast

    Microsoft Academic Search

    M. E. Pampulha; M. C. Loureiro-Dias

    1989-01-01

    The internal pH of Saccharomyces cerevisiae IGC 3507 III (a respiratory-deficient mutant) was measured by the distribution of [14C]propionic acid, when the yeast was fermenting glucose at pH 3.5, 4.5 and 5.5 in the presence of several concentrations of acetic acid and ethanol. Good correlation was obtained between fermentation rates and internal pH. For all external pH values tested, the

  12. PhD students’ work conditions and study environment in university- and industry-based PhD programmes

    Microsoft Academic Search

    A. Kolmos; L. B. Kofoed; X. Y. Du

    2008-01-01

    During the last 10 years, new models of funding and training PhD students have been established in Denmark in order to integrate industry into the entire PhD education. Several programmes have been conducted where it is possible to co-finance PhD scholarships or to become an employee as an industrial PhD in a company. An important question is what impact these

  13. Methods of pH calibration of sedimentary diatom remains for reconstructing history of pH in lakes

    Microsoft Academic Search

    R. B. Davis; D. S. Anderson

    1985-01-01

    The pH history of lakes can be inferred from diatom remains in dated sediment cores. To derive transfer functions for pH inference in acidic lakes, we counted diatoms in surface-sediment from 31 soft-water lakes in n. New England (NE) and 36 in Norway (N), covering pH 4.4–7.1. Cluster analysis of each data set indicates that pH 6 is an upper

  14. Carolyn Bliss, PhD Jeff Webb, PhD Carolan Ownby, PhD Director of LEAP Associate Director of LEAP c.ownby@leap.utah.edu

    E-print Network

    Carolyn Bliss, PhD Jeff Webb, PhD Carolan Ownby, PhD Director of LEAP Associate Director of LEAP c.ownby@leap.utah.edu c.bliss@leap.utah.edu Jeff.Webb@utah.edu Director of the Peer Advisors 801 581-3283 801 581-3214 801 International LEAP Liz Taylor Dylan Mace liz.taylor@utah.edu d.mace@leap.utah.edu 801 581-8920 801 581

  15. Biotechnology Curriculum Freshmen Year: pH

    NSDL National Science Digital Library

    Kurtz, Mary Jane

    During this unit, students will be learning about the terms acid and base. Water is neutral and can be formed from equal amounts of acid and base. What makes a solution an acid? What makes it a base? How is this important to living things? Most living things exist in a pH around 7.0, which is neutral. If they are exposed to either basic or acidic solutions they will be injured or die. Students will learn how to measure the amount of acid or base present in a solution using an indicator dye present in red cabbage.

  16. Recent Ph.D.s; Honors

    NASA Astrophysics Data System (ADS)

    2005-04-01

    Recent Ph.D.s. Atmospheric Sciences. A study of atmospheric ammonia in coastal ecosystems utilizing relaxed eddy accumulation techniques and ion mobility spectrometry, LaToya Myles, Florida A&M University, December 2004, Advisor: Larry Robinson. Honors. Rana A. Fine has been awarded the 2005 Provost Award for Scholarly Activity, presented by the University of Miami. The award ``recognizes faculty for extraordinary research and scholarly pursuits.'' Charles David Keeling and Lonnie G. Thompson will receive the 2005 Tyler Prize for Environmental Achievement. The prize is given to individuals whose accomplishments in environmental science, policy, energy, and medicine confer great benefit upon mankind.

  17. Time course of pH change in plant epidermis using microscopic pH imaging system

    NASA Astrophysics Data System (ADS)

    Dan, Risako; Shimizu, Megumi; Kazama, Haruko; Sakaue, Hirotaka

    2010-11-01

    We established a microscopic pH imaging system to track the time course of pH change in plant epidermis in vivo. In the previous research, we have found out that anthocyanin containing cells have higher pH. However, it was not clear whether the anthocyanin increased the pH or anthocyanin was synthesized result from the higher pH. Therefore, we further investigated the relationship between anthocyanin and pH change. To track the time course of pH change in plant epidermis, we established a system using luminescent imaging technique. We used HPTS (8-Hydroxypyrene-1,3,6-Trisulfonate) as pH indicator and applied excitation ratio imaging method. Luminescent image was converted to a pH distribution by obtained in vitro calibration using known pH solution. Cellular level observation was enabled by merging microscopic color picture of the same region to the pH change image. The established system was applied to epidermal cells of red-tip leaf lettuce, Lactuca Sativa L. and the time course was tracked in the growth process. We would discuss about the relationship between anthocyanin and pH change in plant epidermis.

  18. 08/2011 108/2011 1 PhD Minor in Epidemiology PhD Minor in Epidemiology

    E-print Network

    Arizona, University of

    of Epidemiology ( EPID 573B Epidemiologic Methods (3) A B EPID 573B Epidemiologic Methods (3) A B EPID08/2011 108/2011 1 PhD Minor in Epidemiology PhD Minor in Epidemiology The PhD minor in Epidemiology is designed for individuals from other University of Arizona doctoral degree programs who wish

  19. Comparison of Rumen Fluid pH by Continuous Telemetry System and Bench pH Meter in Sheep with Different Ranges of Ruminal pH

    PubMed Central

    Reis, Leonardo F.; Minervino, Antonio H. H.; Araújo, Carolina A. S. C.; Sousa, Rejane S.; Oliveira, Francisco L. C.; Rodrigues, Frederico A. M. L.; Meira-Júnior, Enoch B. S.; Barrêto-Júnior, Raimundo A.; Mori, Clara S.; Ortolani, Enrico L.

    2014-01-01

    We aimed to compare the measurements of sheep ruminal pH using a continuous telemetry system or a bench pH meter using sheep with different degrees of ruminal pH. Ruminal lactic acidosis was induced in nine adult crossbred Santa Ines sheep by the administration of 15?g of sucrose per kg/BW. Samples of rumen fluid were collected at the baseline, before the induction of acidosis (T0) and at six, 12, 18, 24, 48, and 72 hours after the induction for pH measurement using a bench pH meter. During this 72-hour period, all animals had electrodes for the continuous measurement of pH. The results were compared using the Bland-Altman analysis of agreement, Pearson coefficients of correlation and determination, and paired analysis of variance with Student's t-test. The measurement methods presented a strong correlation (r = 0.94, P < 0.05) but the rumen pH that was measured continuously using a telemetry system resulted in lower values than the bench pH meter (overall mean of 5.38 and 5.48, resp., P = 0.0001). The telemetry system was able to detect smaller changes in rumen fluid pH and was more accurate in diagnosing both subacute ruminal lactic acidosis and acute ruminal lactic acidosis in sheep. PMID:24967422

  20. The pH of Mars

    NASA Astrophysics Data System (ADS)

    Plumb, R. C.; Bishop, J. L.; Edwards, J. O.

    The Viking labeled release (LR) experiments provided data that can be used to determine the acid-base characteristics of the regolith. Constraints on the acid-base properties and redox potentials of the Martian surface material would provide additional information for determining what reactions are possible and defining formation conditions for the regolith. Calculations devised to determine the pH of Mars must include the amount of soluble acid species or base species present in the LR regolith sample and the solubility product of the carbonate with the limiting solubility. This analysis shows that CaCO3, either as calcite or aragonite, has the correct Ksp to have produced the Viking LR successive injection reabsorption effects. Thus CaCO3 or another MeCO3 with very similar solubility characteristics must have been present on Mars. A small amount of soluble acid, but no more than 4 micro-mol per sample, could also have been present. It is concluded that the pH of the regolith is 7.2 +/- 0.1.

  1. Calculation of Estimated Ultimate Recovery for wells in continuous-type oil and gas accumulations of the Uinta-Piceance Province

    USGS Publications Warehouse

    Cook, T.

    2003-01-01

    The calculation of Estimated Ultimate Recovery (EUR) from oil and gas production data of individual wells and the development of EUR distributions from all producing wells in an assessment unit are important steps in the quantitative assessment of continuous-type hydrocarbon resources. The U.S. Geological Survey has developed a method of calculating EURs for wells in continuous-type accumulations, including coal-bed gas accumulations. The EUR distribution of producing wells is used as a guide for the estimation of an EUR distribution for potential wells in areas of undiscovered resources. ?? 2003 Elsevier B.V. All rights reserved.

  2. Design and Construction of the Ultimate Ellipsometer, and Evaluation of Sol-Gel Derived Electro-Optic and Magneto - Thin Films.

    NASA Astrophysics Data System (ADS)

    Simpson, John Thomas

    1995-01-01

    The design and implementation details of an advanced type of optical measurement device are presented (the Ultimate Ellipsometer). Design and functional details of its major components and subcomponents are described. A list of its optical measurement capabilities (polarization rotation and ellipticity, grating diffraction order efficiencies and polarization state measurements, magneto-optic, and electro-optic measurements) is presented, along with various measurement results. In addition, optical, magneto-optical, and electro-optical characterization results of sol-gel derived bismuth doped dysprosium iron garnet (B.I.G.), lead zirconate titanate (PZT), and lead lanthanum zirconate titanate (PLZT) thin films are presented.

  3. PhD-Program Preparation for Successful Post-PhD Career

    E-print Network

    Xie, Tao

    on · There is no single way of accomplishing a goal so please use critical attitudes towards what will be discussed · Talk students, discuss your answers to the question below 9 #12;Essential Skills for a (PhD) Researcher · Oral Critical,Visionary,Creative, Strategic/Engineering, Logical... Skills high-quality/impact research

  4. CLYDE L. 0 INGS, M.D.,Ph.D. RICHARD G. SNYDER, Ph.D.

    E-print Network

    of Pediatrics and Communicable Diseases Department of Electrical and Computer Engineering DON B. CHAFFIN, Ph supervision of Kathie Y. Lloyd, Linda J. Brown, Susan M. Kornfield, and Susan S. Anderson. During the early. The statistical design of the project was under the general supervision of Dr. M. Anthony Schork, with assistance

  5. Line positions and intensities of the phosphine (PH3) Pentad near 4.5 ?m

    SciTech Connect

    Devi, V. Malathy; Kleiner, Isabelle; Sams, Robert L.; Brown, Linda R.; Benner, D. C.; Fletcher, Leigh N.

    2014-04-01

    In order to improve the spectroscopic database for remote sensing of the giant planets, line positions and intensities are determined for the five bands (2?2, ?2 + ?4, 2?4, ?1 and ?3) that comprise the Pentad of PH3 between 1950 and 2450 cm?1. Knowledge of PH3 spectral line parameters in this region is important for the exploration of dynamics and chemistry on Saturn, (using existing Cassini/VIMS observations) and future near-IR data of Jupiter from Juno and ESA’s Jupiter Icy Moons Explorer (JUICE). For this study, spectra of pure PH3 from two Fourier transform spectrometers were obtained: (a) five high-resolution (0.00223 cm?1), high signal-to-noise (?1800) spectra recorded at room temperature (298.2 K) with the Bruker IFS 125HR Fourier transform spectrometer (FTS) at the Pacific Northwest National Laboratory (PNNL), Richland, Washington and (b) four high-resolution (at 0.0115 cm?1 resolution), high signal-to-noise (?700) spectra recorded at room temperature in the region 1800–5200 cm?1 using the McMath-Pierce Fourier transform spectrometer located at the National Solar Observatory (NSO) on Kitt Peak. Individual line parameters above 2150 cm?1 were retrieved by simultaneous multispectrum fittings of all five Bruker spectra, while retrievals with the four Kitt Peak spectra were done in the 1938–2168 cm?1 range spectrum by spectrum and averaged. In all, positions and intensities were obtained for more than 4400 lines. These included 53 A+A? split pairs of transitions (arising due to vibration–rotation interactions (Coriolis-type interaction) between the ?3 and ?1 fundamental bands) for K? = 3, 6, and 9. Over 3400 positions and 1750 intensities of these lines were ultimately identified as relatively unblended and modeled up to J = 14 and K = 12 with rms values of 0.00133 cm?1 and 7.7%, respectively. The PH3 line parameters (observed positions and measured intensities with known quantum assignments) and Hamiltonian constants are reported. Comparisons with other recent studies are discussed.

  6. The National Institute of Nursing Research Graduate Partnerships Program (NINR-GPP): an opportunity for PhD students.

    PubMed

    Engler, Mary B; Austin, Joan K; Grady, Patricia

    2014-01-01

    The Institutional Graduate Partnerships Program (GPP) offered by the National Institute of Nursing Research (NINR) provides an exceptional opportunity for students who are enrolled in any PhD program in nursing across the nation to complete dissertation research on the premier research campus of the National Institutes of Health, Bethesda, MD. The goal of this doctoral fellowship program, which is up to 3 years in length, is to train promising doctoral students in basic and clinical research. This knowledge and skill set is necessary for the next generation of nurse scientists to ultimately conduct translational research. In this article, the authors describe the program, eligibility requirements, application procedures, and selection criteria for NINR-supported GPP nursing students. Also provided are tips for interested students and outcomes of current and former NINR-supported GPP students (NINR-GPP). PMID:25261387

  7. Lung lamellar bodies maintain an acidic internal pH.

    PubMed

    Chander, A; Johnson, R G; Reicherter, J; Fisher, A B

    1986-05-01

    The internal pH of lung lamellar bodies was investigated with membrane permeable basic amines. Isolated granular pneumocytes and isolated lung lamellar bodies exhibited fluorescence when exposed to 8 microM quinacrine, suggesting accumulation of this dye due to an acidic internal pH. Uptake of [14C]methylamine by isolated lung lamellar bodies was measured to quantitate the intralamellar body pH. In KCl-ATP (10 mM) medium (pH 7.0), the accumulation ratio of methylamine (inside/outside) during 2-min incubation was 8.1 +/- 0.47 (mean +/- S.E., n = 8) indicating an internal pH of 6.1. Lamellar bodies accumulated methylamine almost 30-fold in K+-free mannitol medium indicating an internal pH of 5.6. The pH gradient across the lamellar body membrane decreased when external pH was decreased or when ATP was omitted. The pH gradient was also decreased by the addition of 10 mM NH4Cl, 2 micrograms/ml nigericin, 0.02 mM N,N'-dicyclohexylcarbodiimide, or 1 mM N'-ethylmaleimide. These observations indicate that lamellar bodies maintain an acidic interior (pH 6.1 or below) which is generated by an energy-dependent process. PMID:3700387

  8. Discovery and characterization of atropisomer PH-797804, a p38 MAP kinase inhibitor, as a clinical drug candidate.

    PubMed

    Xing, Li; Devadas, Balekudru; Devraj, Rajesh V; Selness, Shaun R; Shieh, Huey; Walker, John K; Mao, Michael; Messing, Dean; Samas, Brian; Yang, Jerry Z; Anderson, Gary D; Webb, Elizabeth G; Monahan, Joseph B

    2012-02-01

    PH-797804 ((aS)-3-{3-bromo-4-[(2,4-difluorobenzyl)oxy]-6-methyl-2-oxopyridin-1(2H)-yl}-N,4-dimethylbenzamde) is a diarylpyridinone inhibitor of p38 mitogen-activated protein (MAP) kinase derived from a racemic mixture as the more potent atropisomer (aS), first proposed by molecular modeling and subsequently confirmed by experiments. Due to steric constraints imposed by the pyridinone carbonyl group and the 6- and 6'-methyl substituents of PH-797804, rotation around the connecting bond of the pyridinone and the N-phenyl ring is restricted. Density functional theory predicts a remarkably high rotational energy barrier of >30?kcal?mol(-1), corresponding to a half-life of more than one hundred years at room temperature. This gives rise to discrete conformational spaces for the N-phenylpyridinone group, and as a result, two atropic isomers that do not interconvert under ambient conditions. Molecular modeling studies predict that the two isomers should differ in their binding affinity for p38? kinase; whereas the atropic S (aS) isomer binds favorably, the opposite aR isomer incurs significant steric interference with p38? kinase. The two isomers were subsequently identified and separated by chiral chromatography. IC50 values from p38? kinase assays confirm that one atropisomer is >100-fold more potent than the other. It was ultimately confirmed by small-molecule X-ray diffraction that the more potent atropisomer, PH-797804, is the aS isomer of the racemic pair. Extensive pharmacological characterization supports that PH-797804 carries most activity both in?vitro and in?vivo, and it has a stability profile compatible with oral formulation and delivery options. PMID:22174080

  9. Career Outcomes for Astronomy Ph.D. Graduates of the University of Texas at Austin: The Next Generation

    NASA Astrophysics Data System (ADS)

    Dinerstein, Harriet L.

    2011-01-01

    Sixteen years ago I conducted a survey of the career trajectories and outcomes of 78 individuals who earned Ph.D.s from the Department of Astronomy at the University of Texas at Austin during the period 1984-1995 (Dinerstein, H. 1996, AAS, 189.0501). In the current poster I extend these statistics up to the present, adding 68 Ph.D. recipients from 1996-2010. This is a sufficiently large sample to search for secular trends such as possible changes in duration of the postdoctoral stage, redistribution of demographics among different kinds of long-term positions, and the emergence of new categories of astronomy-related employment. The picture is less discouraging than one might expect. As of 2010, about 75% of the Texas graduates 7 - 14 years past the Ph.D. are still doing astronomy, and most of those in non-astronomical careers left the field by choice (and often have had considerable success in their alternate careers). Of those 6 years or less past the Ph.D., 50% were in postdoctoral positions and less than 10% had left astronomy. Recent reconsiderations of the employment market (Metcalfe, T.S. 2008, PASP, 120, 229; Seth, A. 2009, Astro2010: The Astronomy and Astrophysics Decadal Survey, Position Paper No. 51) make the point that a typical astronomer who ultimately achieves a permanent position will have held two or three prior temporary positions; this was equally true three decades ago. There has been notable growth nationwide in the number of astronomers employed as faculty at small liberal arts colleges and other undergraduate-centered institutions, a trend that to some degree was anticipated by the University of Texas cohort, which included a number of students for whom this was their personal goal. In a world where job certainty is no longer so prevalent, motivated and resourceful astronomers are finding ways to remain active members of our community.

  10. Addressing the Common Pathway Underlying Hypertension and Diabetes in People Who Are Obese by Maximizing Health: The Ultimate Knowledge Translation Gap

    PubMed Central

    Dean, Elizabeth; Lomi, Constantina; Bruno, Selma; Awad, Hamzeh; O'Donoghue, Grainne

    2011-01-01

    In accordance with the WHO definition of health, this article examines the alarming discord between the epidemiology of hypertension, type 2 diabetes mellitus (T2DM), and obesity and the low profile of noninvasive (nondrug) compared with invasive (drug) interventions with respect to their prevention, reversal and management. Herein lies the ultimate knowledge translation gap and challenge in 21st century health care. Although lifestyle modification has long appeared in guidelines for medically managing these conditions, this evidence-based strategy is seldom implemented as rigorously as drug prescription. Biomedicine focuses largely on reducing signs and symptoms; the effects of the problem rather than the problem. This article highlights the evidence-based rationale supporting prioritizing the underlying causes and contributing factors for hypertension and T2DM, and, in turn, obesity. We argue that a primary focus on maximizing health could eliminate all three conditions, at best, or, at worst, minimize their severity, complications, and medication needs. To enable such knowledge translation and maximizing health outcome, the health care community needs to practice as an integrated team, and address barriers to effecting maximal health in all patients. Addressing the ultimate knowledge translation gap, by aligning the health care paradigm to 21st century needs, would constitute a major advance. PMID:21423684

  11. Key role of work hardening in superconductivity/superfluidity, heat conductivity and ultimate strain increase, evolution, cancer, aging and other phase transitions

    E-print Network

    V. P. Kisel

    2009-05-27

    The shear/laminar flow of liquids/gas/plasma/biological cells (BC), etc. is equivalent to dislocation-like shear of solids. The turbulent flow is the next stage of deformation/ multiplication of dislocation-like defects and their ordering in sub-grains and grain-boundaries, then grains slip-rotation in the direction approximately perpendicular to the shear flow. It is shown that phase transitions are governed by unified deformation hardening/softening under hydrostatic pressure, particle irradiation and impurity (isotope) chemical pressure, hard confining conditions and cooling, etc. thus changing electric, magnetic, ferroelectric, thermal, optical properties.1-2 Dislocation-like work hardening, DWH, is determined by non-monotonous properties of dislocation double edge-cross-jog slip, and ultrastrong DWH gives the lowest drag for any dislocation-like plasticity at phase transitions. This provides the same micromechanisms of the ultimate stage of conventional deformation (superfluidity) of ordinary liquids, i.e., water, kerosene and glycerin, liquid and solid He, quasi-particle condensates. The key role of DWH is confirmed for superconductivity, integer and fractional quantum Hall effects and the enhancement of ultimate strain and diffusion under deformation down to nanostructures, etc. Phase transformations in biological cells (explosive events of diversity and population of species and diseases - for example, locust and plaque bacteria, evolution, aging and cancer,2 bursts in the development of human intellectual possibilities (languages, culture, arts and sciences, history, etc.) depend on the same deformation effects in biological evolution.

  12. PhET Simulation: Build a Molecule

    NSDL National Science Digital Library

    Students will have fun constructing simple molecules with this simulation, while also gaining insight about how to read molecular formulas. Click and drag atoms to see which ones bond to form diatomic molecules (composed of a pair of the same element.) Drag different atoms into the field to build a more complex molecule composed of different elements. After a molecule is built, it can be viewed in 3D models. The simulation was designed to help learners recognize that the subscript in the molecular formula indicates the number of that atom in the molecule, and the coefficient indicates the total number of molecules. More advanced learners can explore covalent bonding and electron sharing. This lesson is part of PhET (Physics Education Technology Project), a large collection of free interactive simulations for science education.

  13. Ian Douglass Coulter, PhD

    PubMed Central

    Brown, Douglas M

    2004-01-01

    This paper focuses on Dr. Ian Coulter’s accomplishments from the time he became Executive Vice-President of CMCC in 1981, until he ended his presidency with a year’s administrative leave in 1990. Annual planning initiatives, pedagogy, scholarship, conflicts, and the quest for university affiliation are discussed as well as his legacy to the College and the chiropractic profession. The term “adventurous” was first attributed to Coulter by Oswald Hall, PhD, Professor Emeritus, University of Toronto who had worked closely with Coulter in a major investigation of the chiropractic profession from 1976 to 1979. Throughout this article the author tries to capture the spirit of daring, innovation and intellect that permeated Coulter’s presidency, enthralling his advocates and confounding his detractors. PMID:17549218

  14. Cell wall pH and auxin transport velocity

    NASA Technical Reports Server (NTRS)

    Hasenstein, K. H.; Rayle, D.

    1984-01-01

    According to the chemiosmotic polar diffusion hypothesis, auxin pulse velocity and basal secretion should increase with decreasing cell wall pH. Experiments were designed to test this prediction. Avena coleoptile sections were preincubated in either fusicoccin (FC), cycloheximide, pH 4.0, or pH 8.0 buffer and subsequently their polar transport capacities were determined. Relative to controls, FC enhanced auxin (IAA) uptake while CHI and pH 8.0 buffer reduced IAA uptake. Nevertheless, FC reduced IAA pulse velocity while cycloheximide increased velocity. Additional experiments showed that delivery of auxin to receivers is enhanced by increased receiver pH. This phenomenon was overcome by a pretreatment of the tissue with IAA. Our data suggest that while acidic wall pH values facilitate cellular IAA uptake, they do not enhance pulse velocity or basal secretion. These findings are inconsistent with the chemiosmotic hypothesis for auxin transport.

  15. Strategies for developing pH sensitive fluorescent probes

    NASA Astrophysics Data System (ADS)

    Berezin, Mikhail Y.; Guo, Kevin; Lee, Hyeran; Akers, Walter; Almutairi, Adah; Fréchet, Jean M. J.; Achilefu, Samuel

    2010-02-01

    Many physiological processes function efficiently within a well-controlled pH range. Higher acidity level has been implicated with a number of systemic pathologies. The potential of pH sensitive fluorescent probes for reporting on biological environments has been widely utilized in a variety of cell studies and has been recently recognized as a powerful technique for in vivo imaging of diseases associated with elevated acidity level. We present several strategies for the development of pH sensitive probes suitable for in vivo imaging. The strategies include incorporation of pH sensitive functionalities in known fluorophores, synthesis of novel pH sensitive skeletons, and design of pH sensitive nanoparticles using acid-degradable polymers.

  16. A droplet-based pH regulator in microfluidics.

    PubMed

    Zhou, Hongbo; Li, Gang; Yao, Shuhuai

    2014-06-01

    In this paper, we develop a strategy to form on-demand droplets with specific pH values. The pH control is based on electrolysis of water in microfluidics, and the produced hydrogen and hydroxyl ions are separated and confined in individual containers during the droplet generation, triggered by a pressure pulse. By tuning the applied voltages and pressure pulses, we can control on demand the pH value in a droplet. PMID:24745036

  17. Chapter A6. Section 6.4. pH

    USGS Publications Warehouse

    Wilde, Franceska D.; Busenberg, Eurybiades; Radtke, Dean B.

    2006-01-01

    Measurement of pH is critical to the understanding of the viability and vulnerability of environmental waters and is considered a master variable in determining the aqueous geochemistry of an aqueous system. pH is a measure that represents the hydrogen-ion concentration (activity) of a solution. This section of the National Field Manual (NFM) describes U.S. Geological Survey (USGS) guidance and protocols for measurement of pH in ground and surface waters.

  18. Regulation of Vacuolar pH in Citrus limon

    Microsoft Academic Search

    Lincoln Taiz

    2005-01-01

    The primary objective of this grant was to characterize the vacuolar V-ATPase of lemon fruits. Lemon fruit vacuoles have an internal pH of about 2.5. Since a typical plant vacuole has a luminal pH of around 5.5, the lemon fruit V-APTase must have special properties which allow it to acidify the lumen to such a low pH: (1) it might

  19. Pathologie vgtale Relation entre le pH des sols

    E-print Network

    Paris-Sud XI, Université de

    Pathologie végétale Relation entre le pH des sols et leur niveau de réceptivité à Fusarium solani pH des sols et leur niveau de réceptivité à Fusarium roseum var sambu- cinum et à F solani var sols de culture dont les pH s'échelonnent de 5,1 à 6,2, un lien direct existe entre les faibles valeurs

  20. Cytoplasmic ph and free mg2+ in lymphocytes

    Microsoft Academic Search

    T. J. Rink; R. Y. TSIEN; T. POZZAN

    1982-01-01

    Measurements have been made of cytoplasmic pH, (pHi) and free Mg ~÷ concentra- tion, ((Mg2+)~), in pig and mouse lymphocytes, pH~ was measured in four ways: by a digitonin null-point technique; by direct measurement of the pH of freeze-thawed cell pellets; from the 31p nuclear magnetic resonance (NMR) spectrum of intracellular inorganic phosphate; and by the use of a newly

  1. pH dependence of drug-membrane interaction

    NASA Astrophysics Data System (ADS)

    Basak, Uttam Kumar; Datta, Alokmay

    2014-04-01

    Langmuir monolayer technique has been used to understand the interaction of piroxicam, a NSAID of oxicam class with the DMPC half membrane. It has been found that drug-membrane interaction is dependent on the pH of the environment. The interaction slightly increases with pH in the range 2.5-6.5 whereas the interaction becomes stronger in the pH range 6.6-8.5. The mechanism of interaction has been explained considering the pH dependent molecular conformation and ionic state of drug and lipid molecules.

  2. Effect of alkaline PH on sunflower 11S Protein

    Microsoft Academic Search

    G. Sripad; M. S. Narasinga Rao

    1987-01-01

    s  The effect of alkaline PH on sunflower 1 1S Protein has been monitored by the techniques of ultracentrifugation, Polyacrylamide\\u000a gel electroPhoresis, turbidity, viscosity, ultraviolet absorPtion sPectra and fluorescence sPectra. Both ultracentrifugation\\u000a and Polyacrylamide gel electroPhoresis show the dissociation of the Protein with increase in PH. Turbidity values decrease\\u000a with PH while viscosity increases. With increase in PH absorbance of the

  3. Field measurement of alkalinity and pH

    USGS Publications Warehouse

    Barnes, Ivan

    1964-01-01

    The behavior of electrometric pH equipment under field conditions departs from the behavior predicted from Nernst's law. The response is a linear function of pH, and hence measured pH values may be corrected to true pH if the instrument is calibrated with two reference solutions for each measurement. Alkalinity titrations may also be made in terms of true pH. Standard methods, such as colorimetric titrations, were rejected as unreliable or too cumbersome for rapid field use. The true pH of the end point of the alkalinity titration as a function of temperature, ionic strength, and total alkalinity has been calculated. Total alkalinity in potable waters is the most important factor influencing the end point pH, which varies from 5.38 (0 ? C, 5 ppm (parts per million) HC0a-) to 4.32 (300 ppm HC0a-,35 ? C), for the ranges of variables considered. With proper precautions, the pH may be determined to =i:0.02 pH and the alkalinity to =i:0.6 ppm HCO3- for many naturally occurring bodies of fresh water.

  4. Italia-Netherland PhD Program: the I.O. PhD Research Program.

    PubMed

    Bellissima, Valentina; Borghesi, Alessandro; Bozzetti, Valentina; Dessì, Angelica; Fabiano, Adele; Risso, Francesco M; Salvo, Vincenzo; Satriano, Angela; Silvagni, Davide; Varrica, Alessandro; van Bel, Frank; Visser, Gerard H A; Vles, Hans Js; Zimmermann, Luc J I; Gavilanes, Antonio D W; Gazzolo, Diego

    2011-10-01

    In the framework of long-term scientific collaboration among the founder members coming from Holland and Italy there was a growing consensus to activate a philosophical doctorate (PhD) program, involving young Italian researchers in the field of perinatal medicine, neonatology and pediatrics. The aims were to promote excellence in research, offering to young Italian physicians the opportunity to maturate an International research experience leading to PhD degree, and to promote human and technological improvement energies in perinatal, neonatal and pediatrics research. Thus, an official collaboration among the Dutch Universities from Maastricht and Utrecht and the Italian Children's Hospital from Alessandria, has been activated on March 1st 2010, finalized to the PhD program. The experimental phase included the selection of projects and relative candidates after an interview-selection focusing on their scientific attitudes and the availability on their research projects. Candidates' selection started on May 2010 and on September 29th ten projects and candidates have been approved by the scientific commission. Research topics included: perinatal asphyxia, aging and the origin of adulthood neurodegenerative disease, neuroprotective strategies, biochemical pulmonology, intrauterine growth retardation and perinatal teratology. To date, all projects have been approved by local Ethics Committee from the University/Hospital of origin of the candidates. Five manuscripts have been published and/or submitted to international Journals regarding pneumology, perinatal asphyxia and teratology, whilst about 60-70% of data regarding clinical studies have already been collected. PMID:21878061

  5. Multiple Theoretical Perspectives in the Thesis PhD: A foundation problem in PhD education

    Microsoft Academic Search

    Terence Love

    2002-01-01

    Recent research has exposed weaknesses in many of the conceptual foundations of PhD education processes as currently implemented. This paper focuses on the use of multiple theoretical perspectives in PhD research projects using the long thesis model of PhD study. The paper describes the epistemological factors impacting on the coherent inclusion of multiple theoretical perspectives necessary for undertaking multi, cross

  6. Liposomal vincristine for relapsed or refractory Ph-negative acute lymphoblastic leukemia: a review of literature.

    PubMed

    Pathak, Priyanka; Hess, Rosemary; Weiss, Mark A

    2014-02-01

    Acute lymphoblastic leukemia (ALL) is a heterogeneous group of hematologic malignancies that arise from clonal proliferation of immature lymphoid cells in the bone marrow, peripheral blood and other organs. There are approximately 3000 new adult cases diagnosed every year in the United States with a 5-year overall survival ranging from 22% to 50%. Most adult patients with ALL who achieve a complete response will ultimately relapse and for this subset of patients the only hope of curative therapy is successful re-induction to achieve a complete response followed by allogeneic transplant. Conventional vincristine has been used in all phases of ALL therapy but its efficacy is limited by cumulative toxicity, typically neuropathic in nature. Historically, the dose of conventional vincristine has been capped at 2 mg to avoid severe neurotoxicity. Liposomal vincristine [as vincristine sulfate liposomal injection (VSLI)] constitutes encapsulating vincristine in a sphingomyelin/cholesterol envelope. This process is thought to enhance drug delivery to the target tissues, decrease neurotoxicity by reducing the percentage of free drug in the plasma and therefore results in increased efficacy with acceptable toxicity. Results from recent trials using VSLI in the setting of relapsed/refractory Ph-negative ALL have been encouraging. VSLI as salvage monotherapy has been successful in inducing complete responses in a minority of adults with relapsed/refractory ALL so that they can be bridged to stem-cell transplantation. Rigorous post-approval testing needs to be conducted to clarify its utility in the clinic. PMID:24490021

  7. Black Holes: The Ultimate Abyss

    NSDL National Science Digital Library

    Lee Ann Hennig

    This lesson plan is part of the DiscoverySchool.com lesson plan library for grades 6-8. It focuses on the mystery of black holes, discussing the three basic sizes and how the characteristics of each type make them different from other black holes. It includes objectives, materials, procedures, discussion questions, evaluation ideas, performing extensions, suggested readings, and vocabulary. There are videos available to order which complement this lesson, audio vocabulary, and links to teaching tools for making custom quizzes, worksheets, puzzles and lesson plans.

  8. The Physics Professor's Ultimate Resources

    NSDL National Science Digital Library

    Created by the CollegeOnline organization, this website corrals a number of websites together from institutions like the University of California - Irvine, the University of Kentucky, and the University of Utah. First-time visitors can scan through seven different subsections, such as "Geometry/Trigonometry", "Tools", and "Optics". A good place to start is with the "Virtual Labs", as they offer a melange of websites from physics labs around the country, complete with research summaries, interactive web activities, and so on. Moving on, the "Optics" area provides a fine explanation of visual illusions, Newton's color wheel, and a place where visitors can build their own rainbow. Finally, the site is rounded out by a nice "Miscellaneous" section that offers sine wave demonstrations, lunar phase illustrations, and a space time lab game.

  9. The Ultimate Utility of Nonutility

    ERIC Educational Resources Information Center

    Colletta, Lisa

    2010-01-01

    While every sector of American life has been affected by the difficult financial times, higher education is experiencing a profound crisis that threatens the very foundations of education and the meaning of intellectual endeavor. The impact of the financial downturn has been both economic--in the form of lower enrollments, rising tuition, and…

  10. Towards the ultimate aesthetic experience

    Microsoft Academic Search

    Haakon Faste; Massimo Bergamasco

    2009-01-01

    Robotic interfaces combined with virtual reality provide an unparalleled platform for cognition research. Using a combination of design strategy, trend analysis and the programming of immersive virtual 3D worlds, we have developed a low-cost aesthetic multimodal experience. Our intent has been to design the \\

  11. Ultimate open pit stochastic optimization

    NASA Astrophysics Data System (ADS)

    Marcotte, Denis; Caron, Josiane

    2013-02-01

    Classical open pit optimization (maximum closure problem) is made on block estimates, without directly considering the block grades uncertainty. We propose an alternative approach of stochastic optimization. The stochastic optimization is taken as the optimal pit computed on the block expected profits, rather than expected grades, computed from a series of conditional simulations. The stochastic optimization generates, by construction, larger ore and waste tonnages than the classical optimization. Contrary to the classical approach, the stochastic optimization is conditionally unbiased for the realized profit given the predicted profit. A series of simulated deposits with different variograms are used to compare the stochastic approach, the classical approach and the simulated approach that maximizes expected profit among simulated designs. Profits obtained with the stochastic optimization are generally larger than the classical or simulated pit. The main factor controlling the relative gain of stochastic optimization compared to classical approach and simulated pit is shown to be the information level as measured by the boreholes spacing/range ratio. The relative gains of the stochastic approach over the classical approach increase with the treatment costs but decrease with mining costs. The relative gains of the stochastic approach over the simulated pit approach increase both with the treatment and mining costs. At early stages of an open pit project, when uncertainty is large, the stochastic optimization approach appears preferable to the classical approach or the simulated pit approach for fair comparison of the values of alternative projects and for the initial design and planning of the open pit.

  12. High Mg effective incorporation in Al-rich Al x Ga1 - x N by periodic repetition of ultimate V/III ratio conditions

    PubMed Central

    2014-01-01

    According to first-principles calculations, the solubility of Mg as a substitute for Ga or Al in Al x Ga1 – x N bulk is limited by large, positive formation enthalpies. In contrast to the bulk case, the formation enthalpies become negative on Al x Ga1 – x N surface. In addition, the N-rich growth atmosphere can also be favorable to Mg incorporation on the surface by changing the chemical potentials. On the basis of these special features, we proposed a modified surface engineering technique that applies periodical interruptions under an ultimate V/III ratio condition (extremely N-rich), to enhance Mg effective incorporation. By optimizing the interruption conditions (2 nm interruption interval with 2 s interruption time), the enhancement ratio can be up to about 5 in the Al0.99Ga0.01N epilayer. PMID:24444104

  13. Mapping Soil pH Buffering Capacity of Selected Fields

    NASA Technical Reports Server (NTRS)

    Weaver, A. R.; Kissel, D. E.; Chen, F.; West, L. T.; Adkins, W.; Rickman, D.; Luvall, J. C.

    2003-01-01

    Soil pH buffering capacity, since it varies spatially within crop production fields, may be used to define sampling zones to assess lime requirement, or for modeling changes in soil pH when acid forming fertilizers or manures are added to a field. Our objective was to develop a procedure to map this soil property. One hundred thirty six soil samples (0 to 15 cm depth) from three Georgia Coastal Plain fields were titrated with calcium hydroxide to characterize differences in pH buffering capacity of the soils. Since the relationship between soil pH and added calcium hydroxide was approximately linear for all samples up to pH 6.5, the slope values of these linear relationships for all soils were regressed on the organic C and clay contents of the 136 soil samples using multiple linear regression. The equation that fit the data best was b (slope of pH vs. lime added) = 0.00029 - 0.00003 * % clay + 0.00135 * % O/C, r(exp 2) = 0.68. This equation was applied within geographic information system (GIS) software to create maps of soil pH buffering capacity for the three fields. When the mapped values of the pH buffering capacity were compared with measured values for a total of 18 locations in the three fields, there was good general agreement. A regression of directly measured pH buffering capacities on mapped pH buffering capacities at the field locations for these samples gave an r(exp 2) of 0.88 with a slope of 1.04 for a group of soils that varied approximately tenfold in their pH buffering capacities.

  14. PhET Simulation: The Greenhouse Effect

    NSDL National Science Digital Library

    2007-11-15

    This simulation explores how greenhouse gases affect Earth's climate. Students can view levels of atmospheric greenhouse gases present during Earth's last Ice Age, in the year 1750, today, or some time in the future.....and observe how the Earth's temperature changes. Levels of 4 greenhouse gases are displayed: water, carbon dioxide, methane, and nitrous oxide. Add cloud cover to the simulation and observe the resulting temperature changes. Choose the tab "Glass Layers" to see what happens in an ideal greenhouse model. In the third simulation, students can adjust levels of atmospheric gases, then shoot infrared and visible photons from a photon emitter. How do the gases influence photon absorption? See Related Materials for a comprehensive student guide that explains how to use the "Greenhouse Effect" simulation to conduct a lab experiment. The experimental question: Which atmospheric gas is the best absorber of infrared photons? This item is part of a growing collection of simulations by the Physics Education Technology Project (PhET). Simulations were designed using principles from physics education research and refined based on student interviews and classroom observations.

  15. Intracellular pH of symbiotic dinoflagellates

    NASA Astrophysics Data System (ADS)

    Gibbin, E. M.; Davy, S. K.

    2013-09-01

    Intracellular pH (pHi) is likely to play a key role in maintaining the functional success of cnidarian-dinoflagellate symbiosis, yet until now the pHi of the symbiotic dinoflagellates (genus Symbiodinium) has never been quantified. Flow cytometry was used in conjunction with the ratiometric fluorescent dye BCECF to monitor changes in pHi over a daily light/dark cycle. The pHi of Symbiodinium type B1 freshly isolated from the model sea anemone Aiptasia pulchella was 7.25 ± 0.01 (mean ± SE) in the light and 7.10 ± 0.02 in the dark. A comparable effect of irradiance was seen across a variety of cultured Symbiodinium genotypes (types A1, B1, E1, E2, F1, and F5) which varied between pHi 7.21-7.39 in the light and 7.06-7.14 in the dark. Of note, there was a significant genotypic difference in pHi, irrespective of irradiance.

  16. PH sensors based on iridium oxide

    SciTech Connect

    Tarlov, M.J.; Huang, P.H.; Kreider, K.G. (Center for Chemical Technology, National Institute of Standards and Technology, Gaithersburg, MD (US))

    1988-01-01

    Iridium oxide shows considerable promise as a high temperature pH sensing material. It is being currently considered for measurement of hot geological brines in connection with nuclear waste disposal. The use of a sputtered thin film of iridium oxide may also lead to much smaller and less costly ionic sensor than those based on the glass electrode. The authors report on recent research which has concentrated on evaluating the long time stability and repeatability of the sputtered electrodes and developing an understanding of the hydroxylation of the oxide. The interaction of IrO/sub 2/ with water apparently affects its formal potential as an electrode. The understanding of this interaction may also help develop a determination of the mechanism for its Nernstian behavior. The electrochemical behavior and surface analysis of IrO/sub 2/ is, however, limited by the cleanliness of the surface and particular effort has been focussed on this problem. They investigate methods for producing both clear, hydroxyl-free and model, hydroxylated IrO/sub 2/ surfaces.

  17. New targets for Ph+ leukaemia therapy.

    PubMed

    Martinelli, Giovanni; Iacobucci, Ilaria; Papayannidis, Cristina; Soverini, Simona

    2009-09-01

    The outcome for adults with Philadelphia chromosome (Ph+) leukaemias (chronic myeloid leukaemia (CML) and acute lymphoblastic leukaemia (ALL)) has been dramatically improved with the use of tyrosine kinase inhibitors (TKIs), but progression and/or relapse are still present in the majority of patients. We reviewed recent findings obtained from analysis of BCR-ABL point mutations, gene expression profiling (GEP) analysis single nucleotide polymorphism (SNP) arrays and characterised by the identification of multiple novel genetic alterations targeting key cellular pathways, including lymphoid differentiation, cell cycle, tumour suppression, apoptosis and drug responsiveness. By GEP analysis, several down/up-expressed genes have been identified. Furthermore, by SNP array analysis, deletions of genes such as IKAROS, PAX5 and CDKN2A-CDKN2B were frequently identified. New therapeutic approaches with novel TKIs are now available. Dasatinib, nilotinib and bosutinib are now in clinical development. Some emerging aurora kinase inhibitors, such as VX-680, PHA-739358, MK-0457 and AS703569, and Smo1 and Hedgehog (Hh) inhibitors promise clinical efficacy against the Bcr-Ab T315I mutant form and leukaemia stem cells, respectively. In this review, we highlight the most promising drugs for the treatment of adult BCR-ABL-positive leukaemias. PMID:19959093

  18. Page 1 of 8 Jin Liu, Ph.D.

    E-print Network

    Dutta, Indranath

    Page 1 of 8 Jin Liu, Ph.D. Assistant Professor, School of Mechanical and Materials Engineering) Email: jin.liu2@wsu.edu ; URL: http://www.mme.wsu.edu/~liu EDUCATION Ph.D. (08/2008) Johns Hopkins Articles 1. T.J. Sze, P. Dutta and J. Liu, Study of protein facilitated water and nutrient transport

  19. Updated 9-13 Terry Allard, Ph.D.

    E-print Network

    Updated 9-13 Terry Allard, Ph.D. Director, Warfighter Performance Science & Technology Department and non-medical research funded by the Navy and Marine Corps. Dr. Allard has been a science & technology (S&T) professional for over 30 years, acquiring a PhD in Psychology and Brain Science from MIT

  20. Julia D. Buckner, Ph.D. Department of Psychology

    E-print Network

    Harms, Kyle E.

    April 2011 Julia D. Buckner, Ph.D. Department of Psychology Louisiana State University 236 Audubon@lsu.edu EDUCATION 2007-2008 Predoctoral Clinical Psychology Fellow, Division of Substance Abuse, Department of Psychiatry, Yale University School of Medicine 2008 Ph.D., Clinical Psychology, Florida State University 2005

  1. Carl J. Bauer, Ph.D. Associate Professor

    E-print Network

    April 2014 Carl J. Bauer, Ph.D. Associate Professor School of Geography and Development University & political economy #12;Carl Bauer CV - 2 EDUCATION Ph.D. (1995), M.A. (1990) Jurisprudence and Social Policy, Global Water Partnership, and others. Oakland, CA. #12;Carl Bauer CV - 3 Spring 1998 Lecturer, Dept

  2. November 2014 Carl J. Bauer, Ph.D.

    E-print Network

    November 2014 Carl J. Bauer, Ph.D. Associate Professor School of Geography and Development & political economy #12;Carl Bauer CV - 2 EDUCATION Ph.D. (1995), M.A. (1990) Jurisprudence and Social Policy, Global Water Partnership, and others. Oakland, CA. #12;Carl Bauer CV - 3 Spring 1998 Lecturer, Dept

  3. PhD POSITION IN DISEASE PROTEOMICS RESEARCH PROJECT

    E-print Network

    and annotation of proteins and will interface with the mass-spectrometry staff at the Proteomics FacilityPhD POSITION IN DISEASE PROTEOMICS RESEARCH PROJECT: A PhD position is available immediately for a project focused on the use of proteomic techniques to identify biomarkers for diagnostic and therapeutic

  4. EFFECTS OF LOW PH ON REPRODUCTION OF RAINBOW TROUT

    EPA Science Inventory

    Reproduction of rainbow trout, Salmo gairdneri in acidic water was studied. Adults were exposed to waters of pH 4.5, 5.0, or 5.5 during the final 6 weeks of reproductive maturation; control acidities were pH 6.5-7.1. Progeny of acid-exposed females and control males had reduced s...

  5. Presenting AI to Non PhDBound Students Frank Klassner

    E-print Network

    Massachusetts at Amherst, University of

    Presenting AI to Non PhD­Bound Students Frank Klassner Computer Science Department University of Massachusetts Amherst, MA 01003 klassner@cs.umass.edu Introduction Graduate students are often introduced to AI career. After they earn their PhD's and become fac­ ulty at computer science departments, this view of AI

  6. Manning School of Business Ph.D. in Business Administration

    E-print Network

    Massachusetts at Lowell, University of

    Manning School of Business Ph.D. in Business Administration Artist's rendering of the under-construction Pulichino Tong Business Building, future home of the Manning School of Business #12;W E L C O M E A Note a Ph.D. in Business Administration in the Manning School of Business at the University of Massachusetts

  7. PARTICIPANT LIST Susan G. Amara, Ph.D.

    E-print Network

    Blumenstein, LL.B., M.B.A. President CHDI Management/CHDI Foundation 350 Seventh Avenue, Suite 601 New York. Darnell, M.D., Ph.D. Investigator Howard Hughes Medical Institute The Rockefeller University 1230 York Avenue New York, NY 10065 Phone: 212-327-7474 E-mail: darnelr@mail.rockefeller.edu Ed Dudek, Ph

  8. Teaching Ph.D.'s How to Reach Out

    ERIC Educational Resources Information Center

    Cassuto, Leonard

    2012-01-01

    Marc Aronson, a lecturer in the School of Communication and Information at Rutgers University at New Brunswick and a historian who writes books for young adults, recently suggested that all Ph.D. candidates be required to take a course he calls "Communications." The goal would be to teach Ph.D.'s--both would-be academics and those who will pursue…

  9. Ph.D. envy: A psychoanalytic case study (panel)

    Microsoft Academic Search

    William A. Behr

    1992-01-01

    I have tried to show how a patient who presented with debilitating anxiety around getting her Ph.D. and with concomitant feelings of envy for those with, and disdain for those without a Ph.D. has a psychical equivalent to what has been described in the literature as penis envy. Although the interpretation of penis envy was seen as a crucial part

  10. Industrial Engineering-BS ,PhD option in Engineering

    E-print Network

    Dyer, Bill

    I Industrial Engineering- BS ,PhD option in Engineering Industrial & Management Engineering - BS MS Applied Mathematics - BS optionin Mathematics Applied Mechanics PhD option in Engineering Applied; teaching "minor, Art History minor Art.History - BA option in Art; minor B Bio-resources`Engineering - BS

  11. Earth & Space Science PhDs, Class of 2001.

    ERIC Educational Resources Information Center

    Claudy, Nicholas; Henly, Megan; Migdalski, Chet

    This study documents the employment patterns and demographic characteristics of recent PhDs in earth and space science. It summarizes the latest annual survey of recent earth and space science PhDs conducted by the American Geological Institute, the American Geophysical Union, and the Statistical Research Center of the American Institute of…

  12. BARBARA K. KEITH Ph.D. (nee TIMBLIN) Professional Preparation

    E-print Network

    Maxwell, Bruce D.

    in Saccharomyces cerevisiae. Genetics, 143(1):57-66. Other Publications: Knezevic N, Roy A, Timblin BBARBARA K. KEITH Ph.D. (nee TIMBLIN) Professional Preparation: University of Washington, Microbiology; B.S. 1988 Hahnemann University, Microbiology and Immunology; Ph.D. 1996 Experience: 02/04-present

  13. David Bartel, Ph.D. Member, Whitehead Institute

    E-print Network

    Kidd, William S. F.

    fragments. Using the yeast Saccharomyces cerevisiae as a model system, much of the work in Allan JacobsonDavid Bartel, Ph.D. Member, Whitehead Institute Member, National Academy of Science Professor, Ph.D. Professor and Chair, Department of Microbiology & Physiological Systems UMass Medical School Co

  14. BARBARA K. KEITH Ph.D. (nee TIMBLIN) Professional Preparation

    E-print Network

    Maxwell, Bruce D.

    in Saccharomyces cerevisiae. Genetics, 143(1):57-66. Other Publications: Knezevic N, Roy A, Timblin BBARBARA K. KEITH Ph.D. (nee TIMBLIN) Professional Preparation: University of Washington, Microbiology; B.S. 1988 Hahnemann University, Microbiology and Immunology; Ph.D. 1996 Experience: 07/08-present

  15. Nutrient Management Module No. 8 Soil pH and

    E-print Network

    Lawrence, Rick L.

    by both acid and base-forming ions in the soil. Common acid-forming cations (positively charged dissolved with the focus on soil pH and organic matter: soil reactions and soil amendments, and soil test reportsH is a measure of the soil solution's acidity and alkalinity. By definition, pH is the `negative logarithm

  16. CHLORIDE, IN CALCIUM, IN pH ARSENIC, IN

    E-print Network

    CHLORIDE, IN CALCIUM, IN pH ARSENIC, IN MILLIGRAMS PER LITER MILLIGRAMS PER LITER MICROGRAMS PER concentrations, calcium concentrations, arsenic concentrations and pH after 100,000 years of simulated groundH ARSENIC, IN MILLIGRAMS PER LITER MILLIGRAMS PER LITER MICROGRAMS PER LITER #12;PHAST--A Program

  17. Ph.D. Candidate Tepper School of Business

    E-print Network

    Sadeh, Norman M.

    TEACHING EXPERIENCE Instructor Marketing I (undergraduate), Summer 2013; Evaluation: 4.15/5.0 TeachingXIAO LIU Ph.D. Candidate Tepper School of Business Carnegie Mellon University 5000 Forbes Avenue://www.andrew.cmu.edu/user/xiaoliu/ EDUCATION Ph.D. 2015 (Expected) Marketing, Carnegie Mellon University M.S. 2012 Industrial Administration

  18. Variation in soil pH under tussock grassland species

    Microsoft Academic Search

    D. Scott

    1975-01-01

    Three tussock grassland sites were sampled along a climatic-soil gradient in the Mackenzie Basin, South Canterbury. There was a range within sites of 0.5 pH units in the 1-5 cm soil layer beneath different species. The pH was highest beneath composite flatweeds and Rumex acetosella and lowest below Festuca novae-zelandiae.

  19. Ris-PhD-Report Department of Civil Engineering

    E-print Network

    Risø-PhD-Report Department of Civil Engineering Wind Turbine Wake in Atmospheric Turbulence Pierre ­ Department of Civil Engineering Risø-PhD-53(EN) AAU-DCE Thesis No. 22 October 2009 This thesis is submitted systematically wind farm measurements to generate wind maps in order to calibrate faster and simpler engineering

  20. PhDs in Australia, from the Beginning

    ERIC Educational Resources Information Center

    Dobson, Ian R.

    2012-01-01

    The Australian PhD is a relatively recent phenomenon, the first three being awarded in 1948. Before that, most Australian scholars typically went to Britain (predominantly) or the USA to undertake their doctoral studies. The aim of this research note is to provide a brief statistical history of the Australian PhD, noting changes over time between…