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1

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

PubMed

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

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

2014-10-22

2

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

PubMed

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

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

2014-12-01

3

Effect of ultimate pH on the physicochemical and biochemical characteristics of turkey breast muscle showing normal rate of postmortem pH fall.  

PubMed

This experiment aimed to study the effect of ultimate pH (pH(u)) on the biochemical and physicochemical characteristics of turkey breast muscle with normal rate of postmortem pH fall. Five hundred turkey toms (12 wk old, 10 kg live weight) were randomly chosen from a commercial flock. At 24 h postmortem, 64 birds were randomly selected within the subgroup showing pH higher than 6.0 at 20 min postmortem and pH(u) lower than 6.1. These pH levels were used to exclude pale, soft, and exudative (PSE) meat and dark, firm, and dry (DFD) meat, respectively. The pH(u) was significantly correlated with luminance (L*; r = -0.37) and yellowness (b*; r = -0.36) at 24 h postmortem, drip losses (r = -0.56 to -0.62), thawing loss (r = -0.47), 80% compression (r = -0.29), yield of curing and cooking (r = 0.37), glycolytic potential at slaughter (r = -0.44) and lactate at 24 h postmortem (r = -0.47). Significant correlations were found between drip losses and compression test on cooked meat (r = 0.27 to 0.34). Cooking loss was correlated with WB shear force (r = 0.32). These results show that when PSE defects are excluded, the intensities of the correlations between pH(u) and meat quality traits are lower than those usually reported. The present data also indicate that the level of glycogen at time of slaughter poorly explains the variability in pH(u). Thus, further research is needed to identify the mechanisms explaining pH(u) variation in poultry muscle. PMID:15510564

El Rammouz, R; Babilé, R; Fernandez, X

2004-10-01

4

Selecting broiler chickens for ultimate pH of breast muscle: analysis of divergent selection experiment and phenotypic consequences on meat quality, growth, and body composition traits.  

PubMed

Genetic parameters for ultimate pH of pectoralis major muscle (PM-pHu) and sartorius muscle (SART-pHu); color parameters L*, a*, b*; logarithm of drip loss (LogDL) of pectoralis major (PM) muscle; breast meat yield (BMY); thigh and drumstick yield (TY); abdominal fat percentage (AFP); and BW at 6 wk (BW6) were estimated in 2 lines of broiler chickens divergently selected for PM-pHu. Effects of selection on all the previous traits and on glycolytic potential, pectoralis major muscle pH at 15 min postmortem, curing-cooking yield (CCY), cooking loss (CL), and Warner-Bratzler shear force (WBSF) of the PM muscle were also analyzed after 5 generations. Strong genetic determinism of PM-pHu was observed, with estimated h(2) of 0.57 ± 0.02. There was a significant positive genetic correlation (rg) between PM-pHu and SART-pHu (0.54 ± 0.04), indicating that selection had a general rather than a specific effect on energy storage in skeletal muscles. The h(2) estimates of L*, a*, and b* parameters were 0.58 ± 0.02, 0.39 ± 0.02, and 0.48 ± 0.02, respectively. Heritability estimates for TY, BMY, and AFP were 0.39 ± 0.04, 0.52 ± 0.01, and 0.71 ± 0.02, respectively. Our results indicated different genetic control of LogDL and L* of the meat between the 2 lines; these traits had a strong rg with PM-pHu in the line selected for low ultimate pH (pHu) value (pHu-; -0.80 and -0.71, respectively), which was not observed in the line selected for high pHu value (pHu+; -0.04 and -0.29, respectively). A significant positive rg (0.21 ± 0.04) was observed between PM-pHu and BMY but not between PM-pHu and BW6, AFP, or TY. Significant phenotypic differences were observed after 5 generations of selection between the 2 lines. The mean differences (P < 0.001) in pHu between the 2 lines were 0.42 and 0.21 pH units in the breast and thigh muscle, respectively. Breast meat in the pHu+ line exhibited lower L* (-5 units; P < 0.001), a* (-0.22 units; P < 0.001), b* (-1.53 units; P < 0.001), and drip loss (-1.6 units; P < 0.001) than in the pHu- line. Breast meat of the pHu+ line was also characterized by greater CCY (+6.1 units; P < 0.001), lower CL (-1.66 units; P < 0.01), and lower WBSF after cooking (-5.1 units; P < 0.001) compared to the pHu- line. This study highlighted that selection based on pHu can be effective in improving the processing ability of breast meat and reducing the incidence of meat quality defects without affecting chicken growth performance. PMID:25006074

Alnahhas, N; Berri, C; Boulay, M; Baéza, E; Jégo, Y; Baumard, Y; Chabault, M; Le Bihan-Duval, E

2014-09-01

5

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

E-print Network

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

Paris-Sud XI, Université de

6

Influence of ultimate pH on bovine meat tenderness during ageing.  

PubMed

The aim of this work was to evaluate the influence of ultimate pH and ageing at 2±2°C on the tenderness of beef. The m.longissimus thoracis et lumborum from 23 young bulls excised at 28 h post mortem were grouped into: Normal (pH 5.5 to 5.8) moderate DFD (mod DFD) (5.8<pH<6.2) and DFD (pH 6.2 to 6.7). The toughness as measured by Warner-Bratzler shear force (WBSF) and sensory evaluation, was significantly (p<0.05) lower in the DFD group than in the Normal one and a significant (p<0.001) linear relationship was found between ultimate pH and tenderness as evaluated by both methods. The myofibrillar protein solubility (MPS) at pH 7.0 was significantly higher in the DFD group at all post mortem times whereas for myofibrillar fragmentation index (MFI) higher values (p<0.05) were only found in the DFD group at day 1. In all three groups toughness decreased (p<0.05) from 1 to 6 days, with no further decrease to 13 days. This decrease in toughness was associated with an increase of MFI in all pH groups. Collagen solubility in all three groups was not affected by ageing. No significant (p>0.05) differences in soluble collagen and myofibrillar protein solubility (MPS) at pH 5.5 were found between the pH groups at any time. The tenderness evaluated by both methods was significantly (p<0.05) related to MFI, MPS at pH 7.0, cooking loss and juiciness. Total and soluble collagen, sarcomere length, intramuscular fat and MPS at pH 5.5 were not significantly (p>0.05) related with tenderness. PMID:22062710

Silva, J A; Patarata, L; Martins, C

1999-08-01

7

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

PubMed Central

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

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

2013-01-01

8

Sensory meat quality, ultimate pH values, blood parameters and carcass characteristics in reindeer ( Rangifer tarandus tarandus L.) grazed on natural pastures or fed a commercial feed mixture  

Microsoft Academic Search

Sensory properties in meat, ultimate muscle pH values, blood metabolites and carcass characteristics from reindeer grazed on natural pasture (n=23) or fed a commercial feed mixture (n=17) were studied. Reindeer fed commercial feed generally had lower ultimate pH values (increased glycogen stores) in all three muscles measured (Mm. triceps brachii, longissimus and biceps femoris) compared with the animals grazing natural

E. Wiklund; L. Johansson; G. Malmfors

2003-01-01

9

On ordered scheduling for optical burst switching M.H. Phu`ng a,*, K.C. Chua a  

E-print Network

On ordered scheduling for optical burst switching M.H. Phu`ng a,*, K.C. Chua a , G. Mohan a , M of the proposed algorithm is studied through simulation and the computational complex- ity and signalling overhead

Motani, Mehul

10

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

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

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

2014-12-01

11

Differential regulation of membrane potential and conductance via intra-and extracellular pH in fused proximal tubular cells of frog kidney  

Microsoft Academic Search

Intracellular pH (pH\\u000ai\\u000a), membrane potential (V\\u000a\\u000am\\u000a) and membrane conductance (G\\u000a\\u000am\\u000a) in fused proximal tubular cells of the frog kidney, were determined at three extracellular pH (pH\\u000ao\\u000a) values, 7.5, 8.5 and 6.5. Imposed changes of pH\\u000ao\\u000a by ±1 pH unit induced parallel but smaller shifts of pH\\u000ai\\u000a. The alkaline milieu

F. Belachgar; P. Hulin; G. Planelles; T. Anagnostopoulos

1995-01-01

12

Rice-Freshwater Prawn Integrated Culture in Tan Phu Thanh Village, Chau Thanh A district, Can Tho Province  

Microsoft Academic Search

Trials of freshwater prawn (Macrobrachium rosenbergii) farming in rice field and garden ditch is being conducted at JIRCAS project research site, Tan Phu Thanh village, Chau Thanh A, Can Tho province. It includes three rice-prawn farms and one garden ditch prawn farm. Juvenile prawns of 0,045 g\\/prawn in average were stocked at a density of 2 prawn\\/m2 in rice-prawn farms,

Nguyen Thanh Phuong; Vu Nam; Vo Thanh Toan; Tran Thi; Thanh Hien; Pham Minh Duc

13

Information: The Ultimate Frontier.  

ERIC Educational Resources Information Center

A 100-year scenario of the future of information technology. To achieve inexpensive, high-speed, and small computers, new techniques are likely to replace silicon technology. The ultimate computer might be biological and patterned on DNA. Future computers will require information rather than store it. Light wave communication will broaden…

Branscomb, Lewis M.

1979-01-01

14

Ultimate Realities: Deterministic and Evolutionary  

ERIC Educational Resources Information Center

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

Moxley, Roy A.

2007-01-01

15

Surface pH at the Basolateral Membrane of the Caecal Mucosa of Guinea Pig  

Microsoft Academic Search

.   Since the major mechanisms responsible for regulation of intracellular pH of enterocytes are located in the basolateral membrane,\\u000a respective effects may be expected on pH in the compartment near the basolateral membrane. A method was established to estimate\\u000a the pH at the basolateral membrane (pH\\u000a \\u000a b\\u000a \\u000a ) of isolated caecal epithelia of guinea pig using pH-sensitive fluorescein attached to

S. Kirschberger; R. Busche; W. von Engelhardt

1999-01-01

16

Ultimate Ownership and Earnings Conservatism  

Microsoft Academic Search

In this paper we analyze whether the extent of timely recognition of unrealized losses into earnings shown by firms with a controlling owner depends on (1) the ownership share of the controlling owner and (2) the divergence between the controlling owner's voting and cash flow rights. Our results document a negative relation between both aspects of the ultimate ownership structure

Carolina Bona-Sánchez; Jerónimo Pérez-Alemán; Domingo Javier Santana-Martín

2011-01-01

17

Fibrosis: ultimate and proximate causes.  

PubMed

Fibrotic disorders account for an increasing burden of disease-associated morbidity and mortality worldwide. Although numerous risk factors have been recognized, the etiologies of many of these clinical syndromes have not been identified, and they are often termed idiopathic or cryptogenic. Here, we provide an evolutionary perspective on fibrosis aimed at elucidating its etiopathogenesis. By asking the ultimate question of "why" this process evolved in multicellular organisms, we hope to uncover proximate explanations for "how" it causes disease in humans. We posit that physiological fibrosis-like reactions evolved as an essential process in host defense against pathogens and in normal wound healing. Based on this premise, we reason that pathological fibrosis is related to one or more of the following: unidentified infectious or noninfectious antigens, autoimmunity, impaired regenerative responses, and the antagonistically pleiotropic action of genes involved in wound healing or development. The importance of genetic susceptibility, epigenetics, aging, and the modern-day environment are highlighted. Consideration of both ultimate and proximate causation goes beyond philosophical cogitations, as it will better inform pathobiological mechanisms of disease and aid in the prevention and treatment of fibrotic diseases. PMID:25365073

Thannickal, Victor J; Zhou, Yong; Gaggar, Amit; Duncan, Steven R

2014-11-01

18

27 CFR 70.503 - Ultimate burden.  

...Application of Section 6423, Internal Revenue Code of 1954, as Amended, to Refund or Credit of Tax on Distilled Spirits, Wines, and Beer General § 70.503 Ultimate burden. For the purposes of this subpart, the claimant, or owner, shall be treated...

2014-04-01

19

Probing the ultimate limits of plasmonic enhancement.  

PubMed

Metals support surface plasmons at optical wavelengths and have the ability to localize light to subwavelength regions. The field enhancements that occur in these regions set the ultimate limitations on a wide range of nonlinear and quantum optical phenomena. We found that the dominant limiting factor is not the resistive loss of the metal, but rather the intrinsic nonlocality of its dielectric response. A semiclassical model of the electronic response of a metal places strict bounds on the ultimate field enhancement. To demonstrate the accuracy of this model, we studied 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

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

2012-08-31

20

Ultimate turbulent Taylor-Couette flow.  

PubMed

The flow structure of strongly turbulent Taylor-Couette flow with Reynolds numbers up to Re(i)=2×10(6) of the inner cylinder is experimentally examined with high-speed particle image velocimetry (PIV). The wind Reynolds numbers Re(w) of the turbulent Taylor-vortex flow is found to scale as Re(w)?Ta(1/2), exactly as predicted by Grossmann and Lohse [Phys. Fluids 23, 045108 (2011).] for the ultimate turbulence regime, in which the boundary layers are turbulent. The dimensionless angular velocity flux has an effective scaling of Nu(?)?Ta(0.38), also in correspondence with turbulence in the ultimate regime. The scaling of Nu(?) is confirmed by local angular velocity flux measurements extracted from high-speed PIV measurements: though the flux shows huge fluctuations, its spatial and temporal average nicely agrees with the result from the global torque measurements. PMID:22324687

Huisman, Sander G; van Gils, Dennis P M; Grossmann, Siegfried; Sun, Chao; Lohse, Detlef

2012-01-13

21

Methods of ultimate carbonaceous BOD determination  

USGS Publications Warehouse

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.

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

1979-01-01

22

The ultimate disposition of depleted uranium  

SciTech Connect

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.

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

1991-12-31

23

Ultimate computing. Biomolecular consciousness and nano Technology  

SciTech Connect

The book advances the premise that the cytoskeleton is the cell's nervous system, the biological controller/computer. If indeed cytoskeletal dynamics in the nanoscale (billionth meter, billionth second) are the texture of intracellular information processing, emerging ''NanoTechnologies'' (scanning tunneling microscopy, Feynman machines, von Neumann replicators, etc.) should enable direct monitoring, decoding and interfacing between biological and technological information devices. This in turn could result in important biomedical applications and perhaps a merger of mind and machine: Ultimate Computing.

Hameroff, S.R.

1987-01-01

24

Is space the ultimate high ground?  

NASA Astrophysics Data System (ADS)

Military experts often refer to space as the ultimate high ground under the premise that placing systems in orbit provides advantages consistent with the military doctrine of high ground. Although space provides the ultimate "observation post", it has none of the other advantages traditionally associated with high ground. Army Field Manual (FM) 34-130 states the other advantages of holding key terrain: commanding avenues of approach, overcoming obstacles, and affording cover and concealment as additional benefits of high ground. Yet systems in orbit incur none of these additional advantages. Finally, international restrictions and reciprocity concerns limit the employment of weapons in space nullifying many of the unique capability advantages that would otherwise support the "high ground" aspect of space. As the ultimate observation post, satellites provide a large quantity of vital data to military decision makers. This massive amount of data needs to have as much context as possible to convert this data to useful knowledge. To use space assets optimally, the military needs to learn from the past and make space and cyber products distributed and tactical. It is absolutely essential to distribute the right information to the lowest level (tactical elements) of the organization or the "boots on the ground" in a timely manner.

Meyer, Gregory J.; Stallings, Francis P.

2011-06-01

25

The ultimate disposition of depleted uranium  

SciTech Connect

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.

Not Available

1990-12-01

26

Ultimate biodegradation of dialkyl phthalate ester plasticizers  

SciTech Connect

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.

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

27

Colour of normal and high pH beef heated to different temperatures as related to oxygenation.  

PubMed

The effects of oxygenation and thermal treatment (internal temperature, T(i): 45, 60, 75°C) on the colour and some colour related physical and biochemical properties of beef longissimus dorsi (LD) muscle, both normal (pH(u)?5.6) and DFD (pH(u)>6.6), were studied. The colour components (L (?), a (?), b (?) values) for the raw and heated LD, both before and after oxygenation, were instrumentally and sensorily evaluated. The colour of raw and heated (60°C) DFD beef before and after oxygenation differed significantly from the normal meat and contained more native muscle pigment (TMP). pH also influenced the depth of the oxygenated layer, specific activity of cytochrome c oxidase (SACCO) and the amount of oxygen consumed. An increase in internal temperature was usually accompanied by a lower SACCO and a significant decrease of TMP, as well as a change of all colour parameters. Oxygenation of the raw and heated slices (except at 75°C) of both types of meat led to higher L (?), a (?) and b (?) values. PMID:22060797

Gašperlin, L; Zlender, B; Abram, V

2000-04-01

28

The Phenix ultimate natural convection test  

SciTech Connect

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)

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

29

Toward the ultimate synthesis/recognition system.  

PubMed Central

This paper predicts speech synthesis, speech recognition, and speaker recognition technology for the year 2001, and it describes the most important research problems to be solved in order to arrive at these ultimate synthesis and recognition systems. The problems for speech synthesis include natural and intelligible voice production, prosody control based on meaning, capability of controlling synthesized voice quality and choosing individual speaking style, multilingual and multidialectal synthesis, choice of application-oriented speaking styles, capability of adding emotion, and synthesis from concepts. The problems for speech recognition include robust recognition against speech variations, adaptation/normalization to variations due to environmental conditions and speakers, automatic knowledge acquisition for acoustic and linguistic modeling, spontaneous speech recognition, naturalness and ease of human-machine interaction, and recognition of emotion. The problems for speaker recognition are similar to those for speech recognition. The research topics related to all these techniques include the use of articulatory and perceptual constraints and evaluation methods for measuring the quality of technology and systems. Images Fig. 3 PMID:7479723

Furui, S

1995-01-01

30

Olympus: The Ultimate Summit for Science  

NASA Technical Reports Server (NTRS)

High above the world-class observatories that dot Hawaii's dormant Mauna Kea volcano, floating farther yet over the hostile and nearly inaccessible peaks of Mt. Everest, lies a summit waiting to be conquered. Here above the clouds and city lights and over 99.7% of the atmosphere is a platform on the edge of space, home to a broad range of astronomy and physics experiments. Today, balloons are lifting experiments longer, higher and more inexpensively than ever before, and returning them safely to Earth for reuse. Week-long flights at altitudes of approximately 35 kilometers carrying payloads in excess of several tons are the norm. NASA now plans to extend this platform and create a new generation of balloons capable of staying afloat with such cargo for 100 days and ultimately 1,000 days. What do some scientists hope to accomplish with 100 or even 1,000 days at the edge of space? To name but a few proposals on the table: Jupiter-size planet searches, large-aperture solar astronomy, large-aperture infrared astronomy, cosmic-ray investigations, long-duration Earth science missions, and hard x-ray imaging experiments. Olympus defines a new era in scientific ballooning. Advances in material science and trajectory control are enabling revolutionary capabilities. Very large scientific payloads can now be reliably launched and retrieved for reflight at a range of altitudes. Balloon flight still remains a fraction of the cost of a rocket launch. The ultra long duration balloon, with its 100-day maiden flight planned for 2001, provides a long-term facility in a near-space environment for many types of science. This is a stratospheric mountaintop well worth the climb.

Kelly, Darrell; Holt, Stephen (Technical Monitor)

2000-01-01

31

Bilabiate Flowers: The Ultimate Response to Bees?  

PubMed Central

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

Westerkamp, Christian; Classen-Bockhoff, Regine

2007-01-01

32

Switchgrass ultimate stresses at typical biomass conditions available for processing  

Microsoft Academic Search

Biomass tensile and shear ultimate failure stresses were measured with the aim of identifying biomass “weakest mode of failure” or “natural fracture point” as a basis for future grinder designs. Switchgrass (Panicum virgatum L.) ultimate stresses were determined for Alamo and Kanlow varieties over ranges in maturity and moisture content. Alamo had greater ultimate tensile stress than Kanlow (P=0.0091), with

M. Yu; A. R. Womac; C. Igathinathane; P. D. Ayers; M. J. Buschermohle

2006-01-01

33

Hydrolysis and nucleophilic substitution of model and ultimate carcinogens  

SciTech Connect

The hydrolysis reaction of the Model Carcinogen O-pivaloyl-N-(4-chlorophenyl)hydroxylamine in aqueous buffer (pH 7.0-10.0) proceeds by was of a nitrenium ion intermediate. The products formed from this process are predominately 2,4-dichloroaniline, and 2-hydroxy-4-chloro-pivalanilide. At pH 10-13 the rate becomes dependent upon hydroxide. The product that is formed is 4-chlorophenylhydroxylamine. 4-Chlorophenyl-hydroxylamine is formed by basic ester hydrolysis determined by an [sup 18]O GC-MS experiment. The reaction of O-pivaloyl-N-(4-chlorophenyl)hydroxylamine in an aqueous diethylamine (pH 11.3) buffer gave 4-chlorophenyl-N,N-diethylhydrazine as the substitution product in a 16% yield. The reaction of O-pivaloyl-N-(4-methylphenyl)hydroxylamine with diethylamine gave a 1% yield of the hydrazine product. The reaction of N,N-dimethylanline and aniline with ring-substituted O-pivaloyl-N-arylhydroxylamines in MeOH generates products of nucleophilic attack on the nitrogen of the hydroxylamine derivative. The hydrolysis of the ultimate carcinogen N-(sulfonatooxy)-N-4-aminobiphenyl proceeds by two consecutive pseudo-first-order processes and generates predominately a product of nucleophilic attack by chloride ion at the ortho position of the aromatic ring. A labile intermediate identified as N-acetypl-4-hydroxy-4-phenyl-2,5-cyclohexadienone imine has been detected by NMR. This intermediate rearranges to form 4-hydroxy-3-phenylacetanilide. The hydrolysis of N-benzoyl-4-hydroxy-4-hydroxy-4-phenyl-2,5-cyclohexadienone imine proceeds by way of two consecutive pseudo-first-order processes. The hydrolysis of N-benzoyl-4-methoxy-4-phenyl-2,5-cyclohexadienone imine also proceeds by two consecutive pseudo-first-order processes. Spectroscopic evidence of two diastereomeric intermediates formed from the hydrolysis of the N-benzoyl imines were tentatively identified as N-benzoyl-N-hydroxy-4-hydroxy-4-phenyl-2,5-cyclohexadienone imine.

Helmick, J.S.

1992-01-01

34

Ultimately straightened spiral springs for reinforcing thermally shrinking polymer composites  

NASA Astrophysics Data System (ADS)

Ultimately straightened spiral springs designed for reinforcing thermally shrinking polymer composites are considered from the viewpoint of their operation properties. The dependence of the degree of contraction of such springs (i.e., of the degree of thermal shrinkage of the composites) primarily on the spring index is determined. It is found that the method of ultimate extension of spiral springs allows one to determine the boundary deformation corresponding to the elasticity limit of the material of a spring wire with a high degree of accuracy.

Goncharenko, V. V.; Loboda, P. I.; Goncharenko, M. V.; Tkachenko, A. O.; Heilmeier, M.

2012-07-01

35

Evolutionary sport and exercise psychology: Integrating proximate and ultimate explanations  

E-print Network

Review Evolutionary sport and exercise psychology: Integrating proximate and ultimate explanations, Dalhousie University, Halifax, Nova Scotia, Canada b Department of Kinesiology and Physical Education differences Sport participation Physical activity a b s t r a c t Objectives: This review aims to demonstrate

Schulte-Hostedde, Albrecht

36

Dulye Leadership Experience The Ultimate Professional Development Experience  

E-print Network

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

Crowston, Kevin

37

The Ultimate Sampling Dilemma in Experience-Based Decision Making  

ERIC Educational Resources Information Center

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…

Fiedler, Klaus

2008-01-01

38

Biaxial tension and ultimate deformation of knitted fabric reinforcements  

Microsoft Academic Search

In this study, the behavior under biaxial tension of two types of glass knitted fabrics, a rib and a milano weft knit, was investigated. The tests were performed using a homemade biaxial tester, which is capable of applying displacement velocity in two orthogonal directions independently. The ultimate deformation in both wale and course directions was determined at different displacement ratios.

Y Luo; I Verpoest

2002-01-01

39

Open MRI at UConn Experience ultimate comfort and today's  

E-print Network

#12;Open MRI at UConn Experience ultimate comfort and today's most precise technologies with the new open MRI at UConn Health Center. Located on the first floor of UConn's state-of-the-art Medical Arts and Research Building, our open MRI offers advanced features, allowing for faster 263 Farmington

Holsinger, Kent

40

Use of electrical conductivity to predict water-holding capacity in post-rigor pork.  

PubMed

This study was designed to re-examine the interrelationships among ultimate pH (pH(u)), electrical conductivity (EC) and water-holding capacity (WHC), and to test if EC, using one of two EC instruments, and pH(u) can be used to predict WHC. The % drip (PD) was used as measure of WHC. Forty-seven pork loins were classified either as PSE (pale, soft, exudative), RSE (reddish-pink, soft, exudative), RFN (reddish-pink, firm, non-exudative) or DFD (dark, firm, dry), based on L* values, PD and pH(u.) The measurement of EC, conducted using the instrument developed at the University of Wisconsin-Madison (UW-EC) was highly correlated to PD at 24 h post mortem (CD=66%), but the pH (NWK) measure of EC was not as highly related to WHC as UW-EC. The predictive value of pH(u) and EC for WHC were similar. When 47 samples were divided into three different groups, such as low (< 2% drip), medium (2-6% drip) and high (> 6% drip) drip loss, UW-EC alone grouped 80% of the samples correctly. Thus, EC seemed to be an accurate predictor of WHC in pork muscle when measured at 24 h post mortem. It is conceivable that EC can be used independently, or with even better success in combination with pH(u), to classify WHC of pork carcasses. PMID:22061569

Lee, S; Norman, J M; Gunasekaran, S; van Laack, R L; Kim, B C; Kauffman, R G

2000-08-01

41

Ultimate classical communication rates of quantum optical channels  

NASA Astrophysics Data System (ADS)

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.

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

2014-10-01

42

The Ultimate Fate of Life in an Accelerating Universe  

E-print Network

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 $n < -2$.

Katherine Freese; William H. Kinney

2002-05-17

43

Ultimate value in Virginia Woolf's To the Lighthouse  

E-print Network

expressed in Virginia Woolf's novel To the Ii hthouse. Woolf's depiction of these values constitutes the logical structure of the novel. Moore's concept of the organic whole and his two ultimate values of appreciation of beautiful objects and human..." and "the enjoyment of beautiful objects. " One should note at the outset that these values isdeed ds i *ae elves. pe le se elves have often been oorrectly attributed to Woolf. David Daiches, for example, concerns himself with the "goal of Virginia...

Hobson, Robert Wadsworth

2012-06-07

44

Suicide: The Ultimate Inside-Out ad Hominem Argument  

E-print Network

SUICIDE: THE ULTIMATE INSIDE-OUT ad Hominem ARGUMENT BRUCE B. SUTTLE Parkland College I One of the major recurring themes in the literature on suicide is that of the desirability of a more nearly neutral definition of the concept.... And despite the numerous disagreements over the various aspects of suicide, many of the combatants agree that a more nearly value-free explication of the concept would not only serve to clarify the nature of suicide, but also enhance the subsequent moral...

Suttle, Bruce B.

1981-12-01

45

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

NASA Astrophysics Data System (ADS)

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.

Green, Martin A.

2014-03-01

46

40 CFR 90.1104 - Furnishing of maintenance instructions to ultimate purchaser.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Furnishing of maintenance instructions to ultimate purchaser...19 KILOWATTS Emission Warranty and Maintenance Instructions § 90.1104 Furnishing of maintenance instructions to ultimate...

2010-07-01

47

Rapid population growth and environmental degradation: ultimate versus proximate factors.  

PubMed

This philosophical review of 2 arguments about responsibility for and solutions to environmental degradation concludes that both sides are correct: the ultimate and the proximal causes. Ultimate causes of pollution are defined as the technology responsible for a given type of pollution, such as burning fossil fuel; proximate causes are defined as situation-specific factors confounding the problem, such as population density or rate of growth. Commoner and others argue that developed countries with low or negative population growth rates are responsible for 80% of world pollution, primarily in polluting technologies such as automobiles, power generation, plastics, pesticides, toxic wastes, garbage, warfaring, and nuclear weapons wastes. Distortionary policies also contribute; examples are agricultural trade protection, land mismanagement, urban bias in expenditures, and institutional rigidity., Poor nations are responsible for very little pollution because poverty allows little waste or expenditures for polluting, synthetic technologies. The proximal causes of pollution include numbers and rate of growth of populations responsible for the pollution. Since change in the ultimate cause of pollution remains out of reach, altering the numbers of polluters can make a difference. Predictions are made for proportions of the world's total waste production, assuming current 1.6 tons/capita for developed countries and 0.17 tons/capita for developing countries. If developing countries grow at current rates and become more wealthy, they will be emitting half the world's waste by 2025. ON the other hand, unsustainable population growth goes along with inadequate investment in human capital: education, health, employment, infrastructure. The solution is to improve farming technologies in the 117 non-self-sufficient countries, fund development in the most unsustainable enclaves of growing countries, break institutionalized socio-political rigidity in these enclaves, and focus on educating and empowering women in these enclaves. Women are in charge of birth spacing and all aspects of management of energy, food, water and the local environment, more so than men, in most countries. PMID:12284190

Shaw, R P

1989-01-01

48

Some Physics Constraints on Ultimate Achievement in Track and Field  

SciTech Connect

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.

Cliff Frohlich

2009-02-06

49

The ultimate quantum limits on the accuracy of measurements  

NASA Technical Reports Server (NTRS)

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.

Yuen, Horace P.

1992-01-01

50

pH inactivation of phosphofructokinase arrests postmortem glycolysis.  

PubMed

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

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

2014-12-01

51

What is the Ultimate Goal in Acid-Base Regulation?  

ERIC Educational Resources Information Center

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

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

2007-01-01

52

Ultimate sensitivity of time-resolved optoacoustic detection  

NASA Astrophysics Data System (ADS)

The major limitation in sensitivity of the optical tomography is associated with strong optical attenuation in human tissues. Opto-acoustic tomography overcomes this limitation utilizing detection of acoustic waves instead of detection of transmitted photons. Exceptional sensitivity of the opto-acoustic tomography allows early detection of small tumors located dep in human tissues, such as breast. This paper demonstrates that an optimally designed opto-acoustic imaging system can detect early 1-mm tumors with minimal blood content of only 7 percent at the depth of up to 7-cm within the breast attenuating laser irradiation 3.3 times per each 1-cm of its depth. A theoretical consideration of the ultimate sensitivity of piezo-detection in a wide ultrasonic frequency band is developed. The detection sensitivity is presented as a function of the ultrasonic frequency, tumor dimensions and optical absorption coefficient. Comparative analysis of piezo and optical interferometric detection of opto-acoustic transients is presented. The theoretical models of piezo detection were developed for the open-circuit and short-circuit schemes of operation. The ultimate sensitivity limited by thermal noise of electric capacitor of the piezo-element was estimated. It was shown that the limit of detection depends on the frequency band, the electric capacity of the transducer and the sped of sound in the piezo-element. Comparative analysis of various piezo-materials was made from the point of view of their utility for sensitive opto-acoustic detection.

Oraevsky, Alexander A.; Karabutov, Alexander A.

2000-05-01

53

What is the Ultimate Goal in Acid-base Regulation?  

NSDL National Science Digital Library

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.

Selvakumar Balakrishnan (Postgraduate Medical Education and Research Department of Physiology, Jawaharlal Institute); Maya Gopalakrishnan (Postgraduate Medical Education and Research Department of Physiology, Jawaharlal Institute); Murali Alagesan (Asian Institute of Medicine, Science, and Technology, School of Medicine Faculty of Medical and Health Sciences,); Dr. E. Sankaranarayanan Prakash (Asian Institute of Medicine, Science, and Technology School of Medicine Faculty of Medical and Health Sciences)

2007-03-01

54

Approaching ultimate resolution for soft x-ray spectrometers.  

PubMed

We explore the potential performance of soft x-ray spectrometers based on the use of varied-line-spacing spherical diffraction gratings (VLS-SG). The quantitative assessment is based on an optimization procedure to obtain both negligible optical aberrations at full illumination of the grating and a quasi linear focal curve. It involves high-order optical aberration cancellation to calculate the focal curves. We also examine the validity of small divergence closed-form formulas describing the light path function. Optimizing the optical and geometric parameters gives an ultimate resolving power, at 930 eV, of between 10,800 for a 3 m long instrument and 34,000 for an 11 m spectrometer according to the Rayleigh criterion. Typical fabrication tolerances would scale these values down by about 10%. The findings are validated by ray-tracing simulations. PMID:22781243

Chiuzb?ian, Sorin G; Hague, Coryn F; Lüning, Jan

2012-07-10

55

Ultimate boundedness stability and controllability of hereditary systems  

NASA Technical Reports Server (NTRS)

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.

Chukwu, E. N.

1979-01-01

56

Atmospheric effects and ultimate ranging accuracy for lunar laser ranging  

NASA Astrophysics Data System (ADS)

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.

Currie, Douglas G.; Prochazka, Ivan

2014-10-01

57

Ultimate top-down processes for future nanoscale devices  

NASA Astrophysics Data System (ADS)

For the past 30 years, plasma etching technology has led in the efforts to shrink the pattern size of ultralarge-scale integrated (ULSI) devices. However, inherent problems in the plasma processes, such as charge buildup and UV photon radiation, limit the etching performance for nanoscale devices. To overcome these problems and fabricate sub-10-nm devices in practice, neutral-beam etching has been proposed. In this paper, we introduce the ultimate etching processes using neutral-beam sources and discuss the fusion of top-down and bottom-up processing for future nanoscale devices. Neutral beams can perform atomically damage-free etching and surface modification of inorganic and organic materials. This technique is a promising candidate for the practical fabrication technology for future nano-devices.

Samukawa, Seiji

2012-03-01

58

Future Synchrotron Light Sources Based on Ultimate Storage Rings  

SciTech Connect

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.

Cai, Yunhai; /SLAC

2012-04-09

59

Interindividual variability in social insects - proximate causes and ultimate consequences.  

PubMed

Individuals within social groups often show consistent differences in behaviour across time and context. Such interindividual differences and the evolutionary challenge they present have recently generated considerable interest. Social insects provide some of the most familiar and spectacular examples of social groups with large interindividual differences. Investigating these within-group differences has a long research tradition, and behavioural variability among the workers of a colony is increasingly regarded as fundamental for a key feature of social insects: division of labour. The goal of this review is to illustrate what we know about both the proximate mechanisms underlying behavioural variability among the workers of a colony and its ultimate consequences; and to highlight the many open questions in this research field. We begin by reviewing the literature on mechanisms that potentially introduce, maintain, and adjust the behavioural differentiation among workers. We highlight the fact that so far, most studies have focused on behavioural variability based on genetic variability, provided by e.g. multiple mating of the queen, while other mechanisms that may be responsible for the behavioural differentiation among workers have been largely neglected. These include maturational, nutritional and environmental influences. We further discuss how feedback provided by the social environment and learning and experience of adult workers provides potent and little-explored sources of differentiation. In a second part, we address what is known about the potential benefits and costs of increased behavioural variability within the workers of a colony. We argue that all studies documenting a benefit of variability so far have done so by manipulating genetic variability, and that a direct test of the effect of behavioural variability on colony productivity has yet to be provided. We emphasize that the costs associated with interindividual variability have been largely overlooked, and that a better knowledge of the cost/benefit balance of behavioural variability is crucial for our understanding of the evolution of the mechanisms underlying the social organization of insect societies. We conclude by highlighting what we believe to be promising but little-explored avenues for future research on how within-colony variability has evolved and is maintained. We emphasize the need for comparative studies and point out that, so far, most studies on interindividual variability have focused on variability in individual response thresholds, while the significance of variability in other parameters of individual response, such as probability and intensity of the response, has been largely overlooked. We propose that these parameters have important consequences for the colony response. Much more research is needed to understand if and how interindividual variability is modulated in order to benefit division of labour, homeostasis and ultimately colony fitness in social insects. PMID:24341677

Jeanson, Raphaël; Weidenmüller, Anja

2014-08-01

60

CATHARE calculations of Phenix ultimate natural convection test  

SciTech Connect

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)

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

61

The ultimate band compression factor in gradient elution chromatography  

SciTech Connect

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.

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

2008-01-01

62

Digital exchange of graphic arts material: the ultimate challenge  

NASA Astrophysics Data System (ADS)

The digital exchange of graphic arts material -- particularly advertising material for publications -- in an open standardized environment represents the ultimate challenge for electronic data exchange. To meet the needs of publication advertising, the graphic arts industry must be able to transmit advertisements in an open environment where there are many senders and many receivers of the material. The material being transmitted consists of combinations of pictorial material, text, and line art with these elements superimposed on top of each other and/or interrelated in complex ways. The business relationships established by the traditional workflow environment, the combination of aesthetic and technical requirements, and the large base of existing hardware and software play a major role in limiting the options available. Existing first- and second-generation standards are focused on the CEPS environment, which operates on and stores data as raster files. The revolution in personal computer hardware and software, and the acceptance of these tools by the graphic arts community, dictates that standards must also be created and implemented for this world of vector/raster-based systems. The requirements for digital distribution of advertising material for publications, the existing graphic arts standards base, and the anticipation of future standards developments in response to these needs are explored.

McDowell, David Q.

1996-01-01

63

ZIO: The Ultimate Linux I/O Framework  

E-print Network

ZIO (with Z standing for “The Ultimate I/O” Framework) was developed for CERN with the specific needs of physics labs in mind, which are poorly addressed in the mainstream Linux kernel. ZIO provides a framework for industrial, high-bandwith, high-channel count I/O device drivers (digitizers, function generators, timing devices like TDCs) with performance, generality and scalability as design goals. Among its features, it offers abstractions for • both input and output channels, and channel sets • run-time selection of trigger types • run-time selection of buffer types • sysfs-based configuration • char devices for data and metadata • a socket interface (PF ZIO) as alternative to char devices In this paper, we discuss the design and implementation of ZIO, and describe representative cases of driver development for typical and exotic applications: drivers for the FMC (FPGAMezzanine Card, see [1]) boards developed at CERN like the FMC ADC 100Msps digitizer, FMC TDC timestamp counter, and FMC DEL ...

Gonzalez Cobas, J D; Rubini, A; Nellaga, S; Vaga, F

2014-01-01

64

Exercise and Pulmonary Hypertension (PH)  

MedlinePLUS

... International PH News and Projects Let Me Breathe Music Video PATIENTS Patients Newly Diagnosed Request an Envelope ... International PH News and Projects Let Me Breathe Music Video Help spread PH awareness and share PH ...

65

78 FR 55117 - Ultimate Heat Sink for Nuclear Power Plants; Draft Regulatory Guide  

Federal Register 2010, 2011, 2012, 2013

...NRC-2013-0203] Ultimate Heat Sink for Nuclear Power Plants; Draft Regulatory Guide...DG-1275, ``Ultimate Heat Sink for Nuclear Power Plants.'' This regulatory guide...acceptable to the NRC staff that nuclear power plant facility licensees and...

2013-09-09

66

75 FR 11922 - Apria Healthcare, Including On-Site Leased Workers From Corestaff, Ultimate Staffing (Roth...  

Federal Register 2010, 2011, 2012, 2013

...Workers From Corestaff, Ultimate Staffing (Roth Staffing Companies), and Aerotek, Cromwell...unemployment insurance (UI) tax account for Roth Staffing Companies. The Department has...workers leased from Ultimate Staffing (Roth Staffing Companies) and Aerotek...

2010-03-12

67

40 CFR 91.1204 - Furnishing of maintenance and use instructions to ultimate purchaser.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Furnishing of maintenance and use instructions to ultimate purchaser...SPARK-IGNITION ENGINES Emission Warranty and Maintenance Instructions § 91.1204 Furnishing of maintenance and use instructions to ultimate...

2010-07-01

68

pH Scale  

NSDL National Science Digital Library

Test the pH of things like coffee, spit, and soap to determine whether each is acidic, basic, or neutral. Visualize the relative number of hydroxide ions and hydronium ions in solution. Switch between logarithmic and linear scales. Investigate whether changing the volume or diluting with water affects the pH. Or you can design your own liquid!

Simulations, Phet I.; Adams, Wendy; Barbera, Jack; Langdon, Laurie; Loeblein, Patricia; Malley, Chris

2008-07-01

69

pH Game  

NSDL National Science Digital Library

The purpose of this resource is to teach students about the acidity levels of liquids and other substances around their school so they understand what pH levels tell us about the environment. Students will create mixtures of water samples, soil samples, plants and other natural materials to better understand the importance of pH levels.

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

2003-08-01

70

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

Code of Federal Regulations, 2011 CFR

...2011-04-01 2011-04-01 false Diesel fuel and kerosene; claims by ultimate...Manufacturers Taxes § 48.6427-8 Diesel fuel and kerosene; claims by ultimate...under which ultimate purchasers of taxed diesel fuel and kerosene may claim the...

2011-04-01

71

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

Code of Federal Regulations, 2013 CFR

...2013-04-01 2013-04-01 false Diesel fuel and kerosene; claims by ultimate...Manufacturers Taxes § 48.6427-8 Diesel fuel and kerosene; claims by ultimate...under which ultimate purchasers of taxed diesel fuel and kerosene may claim the...

2013-04-01

72

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

Code of Federal Regulations, 2012 CFR

...2012-04-01 2012-04-01 false Diesel fuel and kerosene; claims by ultimate...Manufacturers Taxes § 48.6427-8 Diesel fuel and kerosene; claims by ultimate...under which ultimate purchasers of taxed diesel fuel and kerosene may claim the...

2012-04-01

73

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

Code of Federal Regulations, 2010 CFR

...2010-04-01 2010-04-01 true Diesel fuel and kerosene; claims by ultimate...Manufacturers Taxes § 48.6427-8 Diesel fuel and kerosene; claims by ultimate...under which ultimate purchasers of taxed diesel fuel and kerosene may claim the...

2010-04-01

74

Ultimate VHF Broadband Interferometer Zen KAWASAKI and Manabu AKITA  

NASA Astrophysics Data System (ADS)

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

Kawasaki, Z.; Akita, M.

2013-12-01

75

BOOK REVIEW: Seeking Ultimates. An Intuitive Guide to Physics  

NASA Astrophysics Data System (ADS)

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

Brown, Neil

2000-05-01

76

Simulation of the ultimate plastic state of a pipe with axial through crack  

Microsoft Academic Search

We improve the results obtained earlier by the author by constructing statically admissible distributions of axial and tangential\\u000a forces over the ultimate region. The conditions of the ultimate state are made more precise. A procedure of optimization is\\u000a applied on the right-hand boundary of the ultimate region. It is shown that the considered model is quite promising for taking\\u000a into

I. V. Orynyak

1997-01-01

77

Experimental study on ultimate bearing capacity of perfobond rib shear connectors  

Microsoft Academic Search

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

Zhenhai Wang; Qiao Li; Canhui Zhao

2011-01-01

78

Strategy for numerical verification of steel structures at the ultimate limit state  

Microsoft Academic Search

A strategy is proposed for understanding the behaviour, predicting all possible failure mechanisms, evaluating the strength, and assessing the vulnerability of steel structures by means of numerical analyses using commercially available finite element software. The ultimate objective is to have a reliable numerical tool for carrying out strength verifications at the ultimate limit state. Critical buckling modes from linearised buckling

Charis J. Gantes; Konstantinos A. Fragkopoulos

2010-01-01

79

17-4 PH and 15-5 PH  

NASA Technical Reports Server (NTRS)

17-4 PH and 15-5 PH are extremely useful and versatile precipitation-hardening stainless steels. Armco 17-4 PH is well suited for the magnetic particle inspection requirements of Aerospace Material Specification. Armco 15-5 PH and 17-4 PH are produced in billet, plate, bar, and wire. Also, 15-5 PH is able to meet the stringent mechanical properties required in the aerospace and nuclear industries. Both products are easy to heat treat and machine, making them very useful in many applications.

Johnson, Howard T.

1995-01-01

80

A repeat national survey of muscle pH values in commercial pig carcasses.  

PubMed

Measurements of pH values at 45 min post-slaughter (pH(1)) in m. longissimus were taken in a total of 5598 commercial bacon weight carcasses. pH values at 24 h post-slaughter (pH(2)) were taken on a further 5598 carcasses. The overall mean pH(1) was 6.39 with 15.1% of values less than 6.0. The overall mean pH(2) was 5.64, none of the values recorded were greater than 6.5. This survey shows a small increase over the 1983 study in the incidence of potentially Pale Soft and Exudative (PSE) carcasses. It found no evidence of a Dark, Firm and Dry (DFD) problem related to high ultimate pH. PMID:22060624

Homer, D B; Matthews, K R

1998-08-01

81

Ultimate flexibility  

SciTech Connect

As a result of massive restructuring and streamlining since the privatization of British Gas in 1986, the company runs one of the biggest integrated energy networks in the world, from the exploration for new reserves, through transmission and power generation, to t he delivery of gas to homes and businesses in Great Britain and, increasingly, overseas. Nevertheless, despite shedding 10,000 employees, British Gas has lost, and continues to lose, its share of the local non-domestic supply market. Because of fierce competition, the company`s hold on this British sector dropped from 50 to 40 percent in 1994 alone. Further, the company is facing tough competition fro other developers on the international scene. But the company has been highly successful in developing gas exploration and production initiatives, notably through exploration initiatives in Tunisia, the United ARab Emirates, and in the former Soviet Union.

O`Sullivan, D.

1995-09-01

82

C. R. Physique 5 (2004) 483493 Ultimate energy particles in the Universe/Particules d'nergies ultimes dans l'Univers  

E-print Network

but collides with air molecules to initiate shower cascades ending up with billions of sub-particles beforeC. R. Physique 5 (2004) 483­493 Ultimate energy particles in the Universe/Particules d-high energy cosmic ray induced extensive air showers (down to the EeV energies ­ the energy range

Yoshida, Shigeru

83

Ionizable drugs and pH oscillators: buffering effects.  

PubMed

It has been proposed that chemical pH oscillators may form a basis for periodic, pulsed drug delivery of weak acids and bases across lipophilic membranes. However, drugs have been shown to interfere with the ability of the chemical systems to oscillate, and rhythmic delivery of drugs by this means has been demonstrated only under constrained circumstances. Herein, we provide evidence that low concentrations of acidic drugs can attenuate and ultimately quench chemical pH oscillators, by a simple buffering mechanism. A model system consisting of the bromate-sulfite-marble pH oscillator in a continuous stirred tank reactor is used, along with acidic drugs of varying concentration and acid dissociation constant, pK(D). A published kinetic model for this oscillator is modified to account for the presence of acidic drug, and the results of this model are in qualitative agreement with the experimental results. PMID:12210047

Misra, Gauri P; Siegel, Ronald A

2002-09-01

84

SYNTHESIS AND DECOMPOSITION KINETICS of ESTER DERIVATIVE of PROCARCINOGEN and PROMUTAGEN, PhIP, 1-methyl-6-phenylimidazo[4,5-b]pyridine.  

E-print Network

??Food-derived heterocyclic aromatic amines (HCAs) such as imidazo pyridine (PhIP), are metabolically activated to form hydroxylamine and then enzymatically transformed into the ultimate mutagenic and… (more)

NGUYEN DUONG, THACH-MIEN

2007-01-01

85

78 FR 72972 - Application of Ultimate JETCHARTERS, LLC for Commuter Air Carrier Authority  

Federal Register 2010, 2011, 2012, 2013

The Department of Transportation is directing all interested persons to show cause why it should not issue an order finding Ultimate JETCHARTERS, LLC, fit, willing, and able, and awarding it commuter air carrier authority to conduct scheduled commuter...

2013-12-04

86

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 ...

87

Edeline et al. Eel continental dispersal Proximate and ultimate control of eel continental  

E-print Network

occurs on the slope of the continental shelf (SchEdeline et al. Eel continental dispersal Chapter 18 Proximate and ultimate control of eel continental dispersal Eric Edeline1* , Sylvie Dufour2 , Pierre Elie3 1 University of Oslo, Department

Paris-Sud XI, Université de

88

The ultimate solution of the Serial Killer in Hans Kelsen's positivism  

E-print Network

positivism shortcuts when committing their crimes, leading to identification by lawpositivism talism ideal of justice. A concept of law whichlaw. (Kelsen, 1974: the ultimate solution of the Serial Killer in hans kelsen's positivism

Araújo, Antonio Fábio Medrado

2012-01-01

89

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).

90

Deformation limit and ultimate strength of welded T-joints in cold-formed RHS sections  

Microsoft Academic Search

This paper describes the deformation limit and ultimate strength of welded T-joints in cold-formed RHS sections. Both web buckling failure mode and chord flange failure mode are investigated. The strength at a certain deformation (chord flange indentation) limit can be regarded as the ultimate strength of a T-joint. The deformation limit mainly depends on the ratio ? (=b1\\/bo). Based on

Xiao-Ling Zhao

2000-01-01

91

Time-varying ultimate strength of aging tanker deck plate considering corrosion effect  

Microsoft Academic Search

This paper presents a semi-probabilistic approach to assess the time-varying ultimate strength of aging tanker's deck plate considering corrosion wastage. The procedure includes (1) defining the limit state function of deck plate failure, (2) determining the time-varying probability density function of corrosion wastage and values for selected severity levels of corrosion, (3) calculating the time-varying ultimate strength of deck plates

Jinting Guo; Ge Wang; Lyuben Ivanov; Anastassios N. Perakis

2008-01-01

92

Application of surfaces of ultimate strength for thin-walled beams  

Microsoft Academic Search

This paper deals with the problem of ultimate load-carrying capacity of thin-walled sections subject to combined load. That has direct implementation in sizing and design of thin-walled structures. It is solved using the ultimate strength method based on the theory of plastic analysis of structures. It is assumed that the elastic strains are negligible in comparison to the plastic strains

Zygmunt Borowiec

2005-01-01

93

Contribution of the phosphagen system to postmortem muscle metabolism in AMP-activated protein kinase ?3 R200Q pig Longissimus muscle.  

PubMed

Pigs with the AMP-activated protein kinase ?3 R200Q (AMPK?3(R200Q)) mutation generate pork with low ultimate pH (pHu). We hypothesized that reducing muscle creatine (Cr) and phosphocreatine (PCr) may accelerate postmortem ATP consumption and prevent extended pH decline in AMPK?3(R200Q) longissimus muscle. Wild type and AMPK?3(R200Q) pigs were assigned to control diet or diet supplemented with the creatine analog ?-guanidinopropionic acid (?-GPA, 1%) for 2 wk. ?-GPA reduced muscle PCr (P = 0.006) and total Cr (P<0.0001). In general, AMPK?3(R200Q)+?-GPA exhibited more rapid metabolism than control, AMPK?3(R200Q), and ?-GPA treatment, evidenced by more rapid loss of ATP, more rapid increase in IMP, and decreased pH during the first 90 min postmortem. Overall, pHu was similar despite elevated glycogen (AMPK?3(R200Q)), reduced total Cr (?-GPA) or both (AMPK?3(R200Q)+?-GPA). Thus, reducing muscle phosphagens did not affect pHu in AMPK?3(R200Q) muscle, but it hastened ATP depletion and pH decline. PMID:24200581

Scheffler, Tracy L; Kasten, Steven C; England, Eric M; Scheffler, Jason M; Gerrard, David E

2014-02-01

94

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

NASA Astrophysics Data System (ADS)

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.

Han, Y.; Leithead, W. E.

2014-06-01

95

Diverse lamb genotypes—2. Meat pH, colour and tenderness  

Microsoft Academic Search

The effect of genotype on meat ultimate pH, colour and tenderness was studied in 3 experiments involving 436 lambs. The lambs were sired by a selection of Texel (T), Poll Dorset (PD), Border Leicester (BL) and Merino (M) rams, crossed with Border Leicester × Merino (BLM) and Merino (M) ewes giving 6 genotypes (T × BLM, PD × BLM, T

D. L. Hopkins; N. M. Fogarty

1998-01-01

96

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

E-print Network

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

Walter, Frederick M.

97

Universal limiter for transient interpolation modeling of the advective transport equations: The ULTIMATE conservative difference scheme  

NASA Technical Reports Server (NTRS)

A fresh approach is taken to the embarrassingly difficult problem of adequately modeling simple pure advection. An explicit conservative control-volume formation makes use of a universal limiter for transient interpolation modeling of the advective transport equations. This ULTIMATE conservative difference scheme is applied to unsteady, one-dimensional scalar pure advection at constant velocity, using three critical test profiles: an isolated sine-squared wave, a discontinuous step, and a semi-ellipse. The goal, of course, is to devise a single robust scheme which achieves sharp monotonic resolution of the step without corrupting the other profiles. The semi-ellipse is particularly challenging because of its combination of sudden and gradual changes in gradient. The ULTIMATE strategy can be applied to explicit conservation schemes of any order of accuracy. Second-order schemes are unsatisfactory, showing steepening and clipping typical of currently popular so-called high resolution shock-capturing of TVD schemes. The ULTIMATE third-order upwind scheme is highly satisfactory for most flows of practical importance. Higher order methods give predictably better step resolution, although even-order schemes generate a (monotonic) waviness in the difficult semi-ellipse simulation. Little is to be gained above ULTIMATE fifth-order upwinding which gives results close to the ultimate for which one might hope.

Leonard, B. P.

1988-01-01

98

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

Code of Federal Regulations, 2011 CFR

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

2011-01-01

99

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

Code of Federal Regulations, 2012 CFR

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

2012-01-01

100

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

Code of Federal Regulations, 2013 CFR

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

2013-01-01

101

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

Code of Federal Regulations, 2010 CFR

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

2010-01-01

102

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

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

2014-01-01

103

Chiral Discrimination in Dimers of Diphosphines PH2 ?PH2 and PH2 ?PHF.  

PubMed

A theoretical study of the conformational profile of two diphosphines, PH2 ?PH2 and PH2 ?PHF, is carried using second-order Møller-Plesset perturbation theory (MP2) computational methods. The chiral minima found are used to build homo- and heterochiral dimers. Six minima are found for the (PH2 ?PH2 )2 dimers and 27 for the (PH2 ?PHF)2 dimers. Pnicogen and hydrogen bonds, the non-covalent forces that stabilize the complexes, are characterized by Atoms in Molecules (AIM) and Natural Bond Orbital (NBO) methodologies. Those with several pnicogen bonds are more stable than those with hydrogen bonds. The chirodiastaltic energies amount to a total of 1.77 kJ?mol(-1) for the Ra :Ra versus Ra :Sa (PH2 ?PH2 )2 dimers, 0.81 kJ?mol(-1) for the RSa :RSa versus RSa :SRa (PH2 ?PHF)2 dimers, and 2.93 kJ?mol(-1) for the RRa :RRa versus RRa :SSa (PH2 ?PHF)2 dimers. In the first and second cases, the heterochiral complex is favored whereas in the third case, the homochiral complex is favored. PMID:24838830

Azofra, Luis M; Alkorta, Ibon; Elguero, José

2014-11-10

104

LSU's Ultimate PMP Certification Prep Course April 11-15, 2011 and October 24-28, 2011  

E-print Network

's Ultimate PMP Certification Prep Course, taught by a Project Management Professional, is specifically PREP COURSE? · Our Ultimate PMP Prep Course follows the flow of project management which is how the PMP of the major project management element interactions. · Our Ultimate PMP Prep Course contains the four

105

Ph.D. Astronomy Program Ph.D. in Astronomy  

E-print Network

Ph.D. Astronomy Program Ph.D. in Astronomy Department(s) Physics and Astronomy College Sciences 1 physics at the graduate level 4. understand observational astronomy techniques 5. understand astrophysics strong background of knowledge and expertise in physics and astronomy #12;2. Curriculum Alignment

Hemmers, Oliver

106

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

E-print Network

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

Hemmers, Oliver

107

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

NASA Technical Reports Server (NTRS)

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.

Buggele, A. E.

1973-01-01

108

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

E-print Network

large increase in deflection due to a small Increase in load. 8etween the yield load and the ultimate load the increments were necessarily much smaller. The sides of the beams were white-washed and the cracks were traced with a grease pencil... large increase in deflection due to a small Increase in load. 8etween the yield load and the ultimate load the increments were necessarily much smaller. The sides of the beams were white-washed and the cracks were traced with a grease pencil...

Bridges, James W

2012-06-07

109

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

-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

West, Stuart

110

Coping with PH over the Long Term  

MedlinePLUS

... International PH News and Projects Let Me Breathe Music Video PATIENTS Patients Newly Diagnosed Request an Envelope ... International PH News and Projects Let Me Breathe Music Video Help spread PH awareness and share PH ...

111

PH as a stress signal  

Microsoft Academic Search

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

Sally Wilkinson

1999-01-01

112

Ultimate doctor liability: A myth of ignorance or myth of control?  

Microsoft Academic Search

Ultimate medical doctor responsibility for the care delivered to patients by all professionals is a myth. Legally Lord Denning dismissed the myth in the mid-20th century in England. The assumption that a medical doctor is responsible for the care delivered by nurses has not existed in English and Australian law since that time, and it has been actively refuted. Yet

Andrew J Cashin; Michael Carey; Ngaire Watson; Greg Clark; Claire Newman; Cheryl D. Waters

2009-01-01

113

G:\\Dept\\Mrk\\Advertising & Communications Team/Ultimate Study Pack Swinburne University of Technology  

E-print Network

Book Pro 13", iPad Air, Crumpler Bag, and Beats headphones. 8 selected runners-up will win one of 8 i.00; 1x #12;G:\\Dept\\Mrk\\Advertising & Communications Team/Ultimate Study Pack Beats Solo HD Headphones

Liley, David

114

Governance Behaviors of Listed Firms' Real Controlling Shareholders under Ultimate Control Structures  

Microsoft Academic Search

The popularity of concentrated ultimate control rights and the deviation between cash flow rights and control rights around the world show that the logical starting point of corporate governance studies changes to study on the confliction of interests between real controlling shareholders and investors. Under the background of China's reality, integrating the private benefits of control and reputation mechanisms, a

Ming JIA; Zhe ZHANG; Di-fang WAN

2008-01-01

115

Calculation of the ultimate plastic state of thick-walled pipe bend in the circumferential direction  

Microsoft Academic Search

An engineering approach to determine the ultimate state of pipe bend in the circumferential direction is proposed. The essence of the approach is in the realization of several sequential steps. At the first stage, a separate action of certain groups of external loads by means of the semi-inverse method of Saint Venant is considered. Then, a reduction coefficient for internal

I. V. Orynyak

1997-01-01

116

ULTIMATE BEHAVIOR OF HEAVY STEEL SECTION WELDED SPLICES AND DESIGN IMPLICATIONS  

E-print Network

ULTIMATE BEHAVIOR OF HEAVY STEEL SECTION WELDED SPLICES AND DESIGN IMPLICATIONS By Michel Bruneau of partial-penetration welds in that design is reviewed by comparing the member forces obtained from-welded splices of American Institute of Steel Construction (AISC) group four and five rolled steel sections

Bruneau, Michel

117

Age of Onset and Nativelike L2 Ultimate Attainment of Morphosyntactic and Phonetic Intuition  

ERIC Educational Resources Information Center

Research has consistently shown there is a negative correlation between age of onset (AO) of acquisition and ultimate attainment (UA) of either pronunciation or grammar in a second language (L2). A few studies have indeed reported nativelike behavior in some postpuberty learners with respect to either phonetics/phonology or morphosyntax, a result…

Abrahamsson, Niclas

2012-01-01

118

Characterizing Uniformly Ultimately Bounded Switching Signals for Uncertain Switched Linear Systems  

E-print Network

exhibit unbounded behaviors under some switching signals [15], [7]. Therefore, the first task here task here is to identify a subclass of admissible switching signals such that the switched system hasCharacterizing Uniformly Ultimately Bounded Switching Signals for Uncertain Switched Linear Systems

Antsaklis, Panos

119

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

...prior to final approval of such loan, Agency concurrence...concurrence in approval of a proposed loan to an...proposed project through commercial credit or other Federal...financial interest or influence in the ultimate recipient...interest and influence of a cooperative member...

2014-01-01

120

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

Microsoft Academic Search

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

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

1975-01-01

121

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

Microsoft Academic Search

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

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

2003-01-01

122

L2 and L3 Ultimate Attainment: An Investigation of Two Parameters  

ERIC Educational Resources Information Center

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…

Hermas, Abdelkader

2014-01-01

123

BALLOONS AND HOOPS AND THEIR UNIVERSAL FINITE TYPE INVARIANT, BF THEORY, AND AN ULTIMATE ALEXANDER  

E-print Network

BALLOONS AND HOOPS AND THEIR UNIVERSAL FINITE TYPE INVARIANT, BF THEORY, AND AN ULTIMATE ALEXANDER INVARIANT DROR BAR-NATAN Abstract. Balloons are two-dimensional spheres. Hoops are one dimensional loops. Knot- ted Balloons and Hoops (KBH) in 4-space behave much like the first and second homotopy groups

Bar-Natan, Dror

124

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

E-print Network

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

Dowling, Jonathan P.

125

A polynomial expansion to approximate the ultimate ruin probability in the compound Poisson ruin model  

E-print Network

A polynomial expansion to approximate the ultimate ruin probability in the compound Poisson ruin A numerical method to approximate ruin probabilities is proposed within the frame of a compound Poisson ruin time. The number of claims until time t is assumed to be an homogeneous Poisson process {Nt}t0

Paris-Sud XI, Université de

126

The Ultimate and Proximate Regulation of Developmental Polyphenism in Spadefoot Toads  

Microsoft Academic Search

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

Brian L. Storz

2008-01-01

127

!"# $ !!%'&( !)0!213 4 #5176 8 9@9@1BACCC Ultimate Foosball  

E-print Network

foosball tables are Ultimate Foosball compliant. Serving and Refoosing. To start the game, two balls-scoring game1 . Foosed Balls. If a ball cannot be reached by any player, or hops out of the table to maintain possession and slow down the game. If a player has possession of only one ball, s/he must play

Sander, Pedro V.

128

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

PubMed Central

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

Harvey, Annelie J.; Callan, Mitchell J.

2014-01-01

129

Author s note: Marie F. Smith, CRA;Valerie T. Eviner, PhD; Kathie Weathers, PhD; Maria Uriarte, PhD; Holly Ewing, PhD; Jonathan M. Jeschke, PhD; Peter Groffman, PhD; Clive G. Jones, PhD; Institute of Ecosystem Studies, 65 Sharon Turnpike (PO  

E-print Network

Uriarte, PhD; Holly Ewing, PhD; Jonathan M. Jeschke, PhD; Peter Groffman, PhD; Clive G. Jones, Ph. Eviner, PhD Kathie C. Weathers, PhD Maria Uriarte, PhD Holly A. Ewing, PhD Jonathan M. Jeschke, PhD Peter

Berkowitz, Alan R.

130

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

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

Chagnot, Caroline; Agus, Allison; Renier, Sandra; Peyrin, Frederic; Talon, Regine; Astruc, Thierry; Desvaux, Mickael

2013-01-01

131

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

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

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

2013-01-01

132

pH control mechanisms of tumor survival and growth.  

PubMed

A distinguishing phenotype of solid tumors is the presence of an alkaline cellular feature despite the surrounding acidic microenvironment. This phenotypic characteristic of tumors, originally described by Otto Warburg, arises due to alterations in metabolism of solid tumors. Hypoxic regions of solid tumors develop due to poor vascularization and in turn regulate the expression of numerous genes via the transcription factor HIF-1. Ultimately, the tumor microenvironment directs the development of tumor cells adapted to survive in an acidic surrounding where normal cells perish. The provision of unique pH characteristics in tumor cells provides a defining trait that has led to the pursuit of treatments that target metabolism, hypoxia, and pH-related mechanisms to selectively kill cancer cells. Numerous studies over the past decade involving the cancer-specific carbonic anhydrase IX have re-kindled an interest in pH disruption-based therapies. Although an acidification of the intracellular compartment is established as a means to induce normal cell death, the defining role of acid-base disturbances in tumor physiology and survival remains unclear. The aim of this review is to summarize recent data relating to the specific role of pH regulation in tumor cell survival. We focus on membrane transport and enzyme studies in an attempt to elucidate their respective functions regarding tumor cell pH regulation. These data are discussed in the context of future directions for the field of tumor cell acid-base-related research. PMID:20857482

Parks, Scott K; Chiche, Johanna; Pouyssegur, Jacques

2011-02-01

133

Characteristics of cold-induced dark, firm, dry broiler chicken breast meat.  

PubMed

1. A study was designed to characterise dark, firm, dry (DFD) breast meat resulting from cold exposure of broilers and compare its properties with normal breast meat from cold-stressed and control birds. 2. A total of 140 broilers were selected from 5- and 6-week-old birds exposed to cold temperatures ranging from -18 to -4°C, or a control temperature of +20°C for 3 h in an environmental chamber. Half of these birds were slaughtered immediately following the cold exposure and the other half were given 2 h of lairage. 3. Breast meat samples were categorised based on ultimate pH (pH(u)) and colour L* (lightness) values into normal (5·7 ? pH(u)? 6·1; 46 ? L* ? 53) breast meat from control (control-normal) or cold-stressed (cold-normal) birds, and DFD (pH(u)?> 6·1; L*?< 46) breast meat, which only occurred in cold-stressed birds (cold-DFD). 4. Residual glycogen was not different between cold-DFD and control-normal breast meat. Lactate concentration was lower in cold-DFD compared with control-normal breast meat. Lactate concentration almost tripled for all the samples by 30 h post-mortem, which resulted in a drop in pH of normal meat, but did not have any effect on pH of DFD breast meat. Glycolytic potential at both 5 min and 30 h post-mortem was lower in DFD breast meat compared with the normal breast meat from both cold-stressed and control birds. 5. Cold-DFD breast meat was significantly darker, with higher pH(u), lower cook loss, higher water-binding capacity and processing cook yield than cold-normal and control-normal breast meat, which were not different from each other. PMID:22978591

Dadgar, S; Lee, E S; Crowe, T G; Classen, H L; Shand, P J

2012-01-01

134

Philip Prorok, PhD  

Cancer.gov

Philip Prorok, PhD, mirum est notare quam littera gothica, quam nunc putamus parum claram, anteposuerit litterarum formas humanitatis per seacula quarta decima et quinta decima. Eodem modo typi, qui nunc nobis videntur parum clari, fiant sollemnes in futurum.

135

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

136

PhD-Buddy-Programme A PhD-buddy is an experienced PhD-student  

E-print Network

and their services available to you. Win great prizes at our Hannover Quiz and meet fellow PhD Students. FoodPhD-Buddy-Programme A PhD-buddy is an experienced PhD-student who will help a newly arrived PhD-student 14.03. Pub Night // Stammtisch 19.03. Workshop "Working effectively in intercultural settings" April

Nejdl, Wolfgang

137

Ultimate communication capacity of quantum optical channels by solving the Gaussian minimum-entropy conjecture  

E-print Network

Optical channels, such as fibers 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. As a result, a complete physical model of these channels must necessarily take quantum effects into account in order to determine their ultimate performances. Specifically, Gaussian photonic (or bosonic) quantum channels have been extensively studied over the past decades given their importance for practical purposes. In spite of this, a longstanding conjecture on the optimality of Gaussian encodings has yet prevented finding their communication capacity. Here, this conjecture is solved by proving that the vacuum state achieves the minimum output entropy of a generic Gaussian bosonic channel. 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. Beyond capacities, it also has broad consequences in quantum information sciences.

V. Giovannetti; R. Garcia-Patron; N. J. Cerf; A. S. Holevo

2013-12-21

138

Ultimate kinematic characteristics of rail electromagnetic launchers with metal armatures in an external magnetic field  

NASA Astrophysics Data System (ADS)

This paper presents the results of numerical simulation of the Joule heating of the armature and rails in rail launchers of metal bodies with one or two augmenting rails generating an external magnetic field. The ultimate projectile velocity is calculated under the assumption that the Joule heating of the armature and rails during acceleration does not exceed the melting temperature of the materials of which they are made. It is shown that, with an appropriate choice of the position of the coils generating the augmenting magnetic field with respect to the launcher channel and the current magnitude in them, the heat load on the rails and armature in electromagnetic launchers of solids can be substantially reduced and the ultimate kinematic characteristics of these launchers in crisis-free regimes can be considerably increased.

Stankevich, S. V.; Shvetsov, G. A.

2014-09-01

139

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

Microsoft Academic Search

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

James Scott Kellam

2003-01-01

140

An investigation into geometry and microstructural effects upon the ultimate tensile strengths of butt welds  

NASA Technical Reports Server (NTRS)

A mathematical theory was evaluated empirically. This theory predicts weld ultimate tensile strength based on material properties and fusion line angles, mismatch, peaking, and weld widths. Welds were made on 1/4 and 1/2 in. aluminum 2219-T87, their geometries were measured, they were tensile tested, and these results were compared to theoretical predictions. Statistical analysis of results was performed to evaluate correlation of theory to results for many different categories of weld geometries.

Gordon, Stephen S.

1992-01-01

141

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

Microsoft Academic Search

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

Dahua Cui

2009-01-01

142

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

Microsoft Academic Search

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

Roy Sterritt; Michael G. Hinchey

2005-01-01

143

7-Sulfooxymethyl-12-methylbenz[a]anthracene Is an Exceptionally Reactive Electrophilic Mutagen and Ultimate Carcinogen  

Microsoft Academic Search

The hypothesis was tested that an ultimate carcinogen of 7-hydroxymethyl-12-methylbenz[a]anthracene (HMBA), a major metabolite of 7,12-dimethylbenz[a]anthracene (DMBA), is a benzylic carbonium ion generated from an exceptionally reactive aralkylating metabolite, such as an electrophilic sulfate ester. In conformity with this hypothesis, sarcomas were rapidly induced in rats following repeated subcutaneous injection of HMBA (67%) or its electrophilic sulfate ester, sodium 7-sulfooxymethyl-12-methylbenz[a]anthracene

James W. Flesher; Jamie Horn; Andreas F. Lehner

1997-01-01

144

Residual stress build-up in thermoset films cured below their ultimate glass transition temperature  

Microsoft Academic Search

The stress build-up during isothermal cure below the ultimate glass transition temperature of epoxy and acrylate films is investigated in detail. Four systems are studied; two acrylates and two epoxies, with different crosslink densities. Relaxation modulus and film shrinkage are measured simultaneously during cure. The stress build-up is measured independently using a bi-layer beam bending technique. A model for the

Anders Hult

1997-01-01

145

Back Propagation Neural Networks for Predicting Ultimate Strengths of Unidirectional Graphite/Epoxy Tensile Specimens  

NASA Technical Reports Server (NTRS)

The research presented herein demonstrates the feasibility of predicting ultimate strengths in simple composite structures through a neural network analysis of their acoustic emission (AE) amplitude distribution data. A series of eleven ASTM D-3039 unidirectional graphite/epoxy tensile samples were loaded to failure to generate the amplitude distributions for this analysis. A back propagation neural network was trained to correlate the AE amplitude distribution signatures generated during the first 25% of loading with the ultimate strengths of the samples. The network was trained using two sets of inputs: (1) the statistical parameters obtained from a Weibull distribution fit of the amplitude distribution data, and (2) the event frequency (amplitude) distribution itself. The neural networks were able to predict ultimate strengths with a worst case error of -8.99% for the Weibull modeled amplitude distribution data and 3.74% when the amplitude distribution itself was used to train the network. The principal reason for the improved prediction capability of the latter technique lies in the ability of the neural network to extract subtle features from within the amplitude distribution.

Walker, James L.; Hill, Eric v. K.

1993-01-01

146

Laryngopharyngeal pH measurement  

PubMed Central

Methods: Cohorts of unconscious adult ED and elective surgical patients were recruited. The posterior pharyngeal wall pH was measured immediately before and after intubation. Pharyngeal pH was used to indicate risk of aspiration, and pH change to assess the efficacy of cricoid pressure. Results: Eight ED and 48 control patients were recruited. In the ED cohort, pH ranged from 6.0 to 8.0 before intubation and 4.7 to 8.0 after intubation: a mean decrease of 0.3 (95% CI 1.5 decrease to 0.9 increase). In the control cohort pH ranged from 5.8 to 8.0 before intubation and 6.0 to 8.0 after intubation: a mean increase of 0.4 (95% CI 0.1 to 0.6 increase). Conclusions: This is a simple, cheap, and repeatable technique for assessing aspiration risk in emergency intubations. A larger study is required to assess the efficacy of cricoid pressure. PMID:15208239

Spurrier, E; Clancy, M; Deakin, C

2004-01-01

147

A survey of beef muscle color and pH.  

PubMed

The objectives of this study were to define a beef carcass population in terms of muscle color, ultimate pH, and electrical impedance; to determine the relationships among color, pH, and impedance and with other carcasses characteristics; and to determine the effect of packing plant, breed type, and sex class on these variables. One thousand beef carcasses were selected at three packing plants to match the breed type, sex class, marbling score, dark-cutting discount, overall maturity, carcass weight, and yield grade distributions reported for the U.S. beef carcass population by the 1995 National Beef Quality Audit. Data collected on these carcasses included USDA quality and yield grade data and measurements of muscle color (L*, a*, b*), muscle pH, and electrical impedance of the longissimus muscle. About one-half (53.1%) of the carcasses fell within a muscle pH range of 5.40 to 5.49, and 81.3% of the carcasses fell within a longissimus muscle pH range of 5.40 to 5.59. A longissimus muscle pH of 5.87 was the approximate cut-off between normal and dark-cutting carcasses. Frequency distributions indicated that L* values were normally distributed, whereas a* and b* values were abnormally distributed (skewed because of a longer tail for lower values, a tail corresponding with dark-cutting carcasses). Electrical impedance was highly variable among carcasses but was not highly related to any other variable measured. Color measurements (L*, a*, b*) were correlated (P < 0.05) with lean maturity score (-.58, -.31, and -.43, respectively) and with muscle pH (-.40, -.58, and -.56, respectively). In addition, fat thickness was correlated with muscle pH and color (P < 0.05). There was a threshold at approximately .76 cm fat thickness, below which carcasses had higher muscle pH values and lower colorimeter readings. Steer carcasses (L* = 39.62, a* = 25.20, and b* = 11.03) had slightly higher colorimeter readings (P < 0.05) than heifer carcasses (L* = 39.20, a* = 24.78, and b* = 10.80) even though muscle pH was not different between steer and heifer carcasses. Dairy-type carcasses (pH = 5.59, L* = 37.56, a* = 23.40, and b* = 9.68) had higher muscle pH values and lower colorimeter readings than either native-type (pH = 5.50, L* = 39.55, a* = 25.13, and b* = 11.00) or Brahman-type (pH = 5.46, L* = 39.75, a* = 25.17, and b* = 11.05) carcasses (P < 0.05). PMID:11263828

Page, J K; Wulf, D M; Schwotzer, T R

2001-03-01

148

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.

2013-08-06

149

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.

150

PhET: Masses & Springs  

NSDL National Science Digital Library

This simulation provides a realistic virtual mass-and-spring laboratory. Users can explore spring motion by manipulating stiffness of the spring and mass of the hanging weight. Concepts of Hooke's Law and elastic potential energy are further clarified through charts showing kinetic, potential, and thermal energy for each spring. 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 in which students learn through exploration. All of the sims are freely available from the PhET website for incorporation into classes.

2008-07-29

151

Proximate and ultimate causes of signal diversity in the electric fish Gymnotus.  

PubMed

A complete understanding of animal signal evolution necessitates analyses of both the proximate (e.g. anatomical and physiological) mechanisms of signal generation and reception, and the ultimate (i.e. evolutionary) mechanisms underlying adaptation and diversification. Here we summarize the results of a synthetic study of electric diversity in the species-rich neotropical electric fish genus Gymnotus. Our study integrates two research directions. The first examines the proximate causes of diversity in the electric organ discharge (EOD) - which is the carrier of both the communication and electrolocation signal of electric fishes - via descriptions of the intrinsic properties of electrocytes, electrocyte innervation, electric organ anatomy and the neural coordination of the discharge (among other parameters). The second seeks to understand the ultimate causes of signal diversity - via a continent-wide survey of species diversity, species-level phylogenetic reconstructions and field-recorded head-to-tail EOD (ht-EOD) waveforms (a common procedure for characterizing the communication component of electric fish EODs). At the proximate level, a comparative morpho-functional survey of electric organ anatomy and the electromotive force pattern of the EOD for 11 species (representing most major clades) revealed four distinct groups of species, each corresponding to a discrete area of the phylogeny of the genus and to a distinct type of ht-EOD waveform. At the ultimate level, our analyses (which emphasize the ht-EOD) allowed us to conclude that selective forces from the abiotic environment have had minimal impact on the communication component of the EOD. In contrast, selective forces of a biotic nature - imposed by electroreceptive predators, reproductive interference from heterospecific congeners, and sexual selection - may be important sources of diversifying selection on Gymnotus signals. PMID:23761477

Crampton, W G R; Rodríguez-Cattáneo, A; Lovejoy, N R; Caputi, A A

2013-07-01

152

More on Ultimate and Immanent Justice: Results from the Research Project “Justice as a Problem within Reunified Germany”  

Microsoft Academic Search

In earlier studies it was shown that two domain-specific variates of belief in a just world, namely belief in immanent justice and belief in ultimate justice concerning severe illness, differ systematically and significantly. Only immanent justice leads to accusation and derogation of innocent victims while ultimate justice is concordant with positive evaluations of victims and helping behavior. With regard to

Jürgen Maes; Manfred Schmitt

1999-01-01

153

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

NASA Astrophysics Data System (ADS)

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.

Lefèvre, Hervé C.

2013-12-01

154

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

E-print Network

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.

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

2008-07-24

155

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

NSDL National Science Digital Library

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.

Huffman, Brent

156

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

NASA Technical Reports Server (NTRS)

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.

Sterritt, Roy; Hinchey, Mike

2005-01-01

157

Addition of zinc methacrylate in dental polymers: MMP-2 inhibition and ultimate tensile strength evaluation  

Microsoft Academic Search

This study evaluated the effect of zinc methacrylate (ZM) on the inhibition of matrix metalloproteinase 2 (MMP-2) and the\\u000a ultimate tensile strength (UTS) of an experimental polymer. Enzymes secreted from mouse gingival tissues were analyzed by\\u000a gelatin zymography in buffers containing 5 mM CaCl2 (Tris–CaCl2) in 50 mM Tris–HCl buffer with various concentrations of ZM (0.5, 1, 2, 4, 8, and 16 mM).

Sandrina Henn; Rodrigo Varella de Carvalho; Fabrício Aulo Ogliari; Ana Paula de Souza; Sergio Roberto Peres Line; Adriana Fernandes da Silva; Flávio Fernando Demarco; Adriana Etges; Evandro Piva

158

A theoretical approach for estimation of ultimate size of bimetallic nanocomposites synthesized in microemulsion systems  

NASA Astrophysics Data System (ADS)

In this research a new idea for prediction of ultimate sizes of bimetallic nanocomposites synthesized in water-in-oil microemulsion system is proposed. In this method, by modifying Tabor Winterton approximation equation, an effective Hamaker constant was introduced. This effective Hamaker constant was applied in the van der Waals attractive interaction energy. The obtained effective van der Waals interaction energy was used as attractive contribution in the total interaction energy. The modified interaction energy was applied successfully to predict some bimetallic nanoparticles, at different mass fraction, synthesized in microemulsion system of dioctyl sodium sulfosuccinate (AOT)/isooctane.

Salabat, Alireza; Saydi, Hassan

2012-12-01

159

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.

160

Making pH Tangible.  

ERIC Educational Resources Information Center

Presents a laboratory exercise in which students test the pH of different substances, study the effect of a buffer on acidic solutions by comparing the behavior of buffered and unbuffered solutions upon the addition of acid, and compare common over-the-counter antacid remedies. (MKR)

McIntosh, Elizabeth; Moss, Robert

1995-01-01

161

Weapons and commercial plutonium ultimate disposition choices: Destroy ``completely`` or store forever  

SciTech Connect

All of the options under consideration for weapons and commercial plutonium disposition ultimately boil down to the choices of either ``complete`` destruction or storage ``forever.`` None of the reactor-based plutonium burning systems demonstrated over the past 50 years of reactor development consume this material completely. Ultimately considerable unburned plutonium must be stored ``forever`` from those systems. Plutonium is considered to be dangerous both as a weapons material and as a health hazard. While properly stored plutonium might never make its way back by natural phenomena into the environment as a health hazard, stored plutonium is always accessible to recovery for malevolent purposes. It must be guarded wherever in the world it is stored for as long as it continues to exist. Complete destruction of the plutonium eliminates this material as a concern of future generations. Los Alamos National Laboratory accelerator-driven technology promises to allow safe and complete destruction of this material. Furthermore it appears that in the process of destruction the neutron rich features of the weapons plutonium provides benefits to society that place a value on weapons plutonium exceeding that of highly enriched uranium. A realistic time scale for development and deployment of burial technology either with or without partial burning in reactors is expected to be comparable with or to exceed the time for development and deployment of the accelerator-driven destruction method under study at Los Alamos.

Bowman, C.D.

1994-07-01

162

Formulation of reduction rate for ultimate compressive strength of stiffened panel induced by opening  

NASA Astrophysics Data System (ADS)

The main objective of this study is to numerically investigate the characteristics of ultimate compressive strength of stiffened panels with opening and also to fit the design-oriented formulae. For this purpose, three series of well executed experimental data on longitudinally stiffened steel plates with and without opening subjected to the uniform axial in-pane load which is carried out to study the buckling and post-buckling up to the final failure are chosen. Also, a nonlinear finite element method capable of efficiently analyzing the large elasto-plastic deflection behavior of stiffened panels is developed and used for simulation. The feasibility of the present simulation process is confirmed by a good agreement with the experimental results. More case studies are developed employing the simulation process to analyze the influence of various design variables on the reduction rate of ultimate strength of stiffened panel induced by opening. Based on the computed results, two design formulae are fitted and the accuracy of design formulae is studied. Furthermore, the viability of the design formulae for practical engineering is proved.

Yu, Chang-li; Lee, Joo-sung

2014-08-01

163

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

PubMed Central

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

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

2011-01-01

164

Cyclic pitch control for the reduction of ultimate loads on wind turbines  

NASA Astrophysics Data System (ADS)

In this paper we study the use of individual blade pitch control as a way to reduce ultimate loads. This load alleviation strategy exploits the fact that cyclic pitching of the blades induces in general a reduction of the average loading of a wind turbine, at least for some components as the main bearing, the yaw bearing, or the tower. When ultimate loads are generated during shutdowns, the effect of the use of cyclic pitch results in reduced peak loads. In fact, as the machine starts from a less stressed condition, the response to an extreme gust or other event will result in reduced loading on its components. This form of load mitigation can be seen as a preventative load mitigation strategy: the effect on load reduction is obtained without the need to detect and react to an extreme event, but by simply unloading the machine so that, in case an extreme event happens, the result will be less severe. The effect of peak load mitigation by preventative cyclic pitch is investigated with reference to a multi-MW wind turbine, by using high-fidelity aeroelastic simulations in a variety of operating conditions.

Bottasso, C. L.; Croce, A.; Riboldi, C. E. D.; Salvetti, M.

2014-06-01

165

ULtiMATE system for rapid assembly of customized TAL effectors.  

PubMed

Engineered TAL-effector nucleases (TALENs) and TALE-based constructs have become powerful tools for eukaryotic genome editing. Although many methods have been reported, it remains a challenge for the assembly of designer-based TALE repeats in a fast, precise and cost-effective manner. We present an ULtiMATE (USER-based Ligation Mediated Assembly of TAL Effector) system for speedy and accurate assembly of customized TALE constructs. This method takes advantage of uracil-specific excision reagent (USER) to create multiple distinct sticky ends between any neighboring DNA fragments for specific ligation. With pre-assembled templates, multiple TALE DNA-binding domains could be efficiently assembled in order within hours with minimal manual operation. This system has been demonstrated to produce both functional TALENs for effective gene knockout and TALE-mediated gene-specific transcription activation (TALE-TA). The feature of both ease-of-operation and high efficiency of ULtiMATE system makes it not only an ideal method for biologic labs, but also an approach well suited for large-scale assembly of TALENs and any other TALE-based constructions. PMID:24228087

Yang, Junjiao; Yuan, Pengfei; Wen, Dingqiao; Sheng, Ying; Zhu, Shiyou; Yu, Yuezhou; Gao, Xiang; Wei, Wensheng

2013-01-01

166

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

PubMed Central

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

Faulkes, Chris G.; Bennett, Nigel C.

2013-01-01

167

'Ultimate' Information Content in Solar and Stellar Spectra: Photospheric line asymmetries and wavelength shifts  

E-print Network

CONTEXT: Spectral-line asymmetries and wavelength shifts are signatures of hydrodynamics in solar and stellar atmospheres. Theory may precisely predict idealized lines, but observed spectra are limited by blends, too few suitable lines, imprecise laboratory wavelengths, and by instrumental imperfections. AIMS: Bisectors and shifts are extracted until the 'ultimate' accuracy limits in highest-quality solar and stellar spectra, to understand limits set by stellar physics, observational techniques, and limitations in laboratory data. METHODS: Spectral atlases of the Sun and bright solar-type stars were examined for thousands of 'unblended' lines with the most accurate laboratory wavelengths, yielding bisectors and shifts as averages over groups of similar lines, thus minimizing effects of photometric noise and of random blends. RESULTS: For solar spectra, bisector shapes and shifts were extracted for previously little-studied species (Fe II, Ti I, Ti II, Cr II, Ca I, C I), using recently determined very accurate laboratory wavelengths. In Procyon and other F-type stars, a blueward bend in the bisector near the spectral continuum reveals line saturation and damping wings in upward-moving photospheric granules. Accuracy limits set by 'astrophysical' noise, finite instrumental resolution, superposed telluric absorption, and inaccurate wavelengths, together limit absolute lineshift studies to approximately 50-100 m/s. CONCLUSIONS: Spectroscopy with resolutions R = 300,000 will enable bisector studies for many stars. Circumventing remaining limits of astrophysical noise in line-blends and rotationally smeared profiles may ultimately require spectroscopy across spatially resolved stellar disks.

Dainis Dravins

2008-10-14

168

Health care quality, access, cost, workforce, and surgical education: the ultimate perfect storm.  

PubMed

The discussions on health care reform over the past two years have focused on cost containment while trying to maintain quality of care. Focusing on just cost and quality unfortunately does not address other very important factors that impact on our health care delivery system. Availability of a well-trained workforce, maintaining the sophisticated medical/surgical education system, and ultimately access to quality care by the public are critical to maintaining and enhancing our health care delivery system. Unfortunately, all five of these components are under at risk. Thus, we have evolving the ultimate perfect storm affecting our health care delivery system. Although not ideal and given the uniqueness of our population and their expectations, our current delivery system is excellent compared to other countries. However, the cost of our current system is rising at an alarming rate. Currently, health care consumes 17% of our gross domestic product. If our system is not revised this will continue to rise and by 2025 it will consume 48%. The dilemma, given the current state of our overall economy and rising debt, is how to address this major problem. Unfortunately, the Affordable Care Act, which is now law, does not address most of the issues and the cost was initially grossly under estimated. Furthermore, the law does not address the issues of workforce, maintaining our medical education system or ultimately, access. A major revision of our system will be necessary to truly create a system that protects and enhances all five of the components of our health care delivery system. To effectively accomplish this will require addressing those issues that lead to wasteful spending and diversion of our health care dollars to profit instead of care. Improved and efficient delivery systems that reduce complications, reduction of duplication of tertiary and quaternary programs or services within the same markets (i.e. regionalization of care), health insurance reform, and tort reform collectively could save hundreds of billion dollars per year! These changes may not be easy to accomplish politically but will be essential to save what is likely the best health care system in the world. PMID:22244385

Schwartz, Marshall Z

2012-01-01

169

Keiji TANAKA, Ph.D. Hitoshi OKAMOTO, M.D., Ph.D.  

E-print Network

Keiji TANAKA, Ph.D. Hitoshi OKAMOTO, M.D., Ph.D. Atsushi MIYAWAKI, M.D., Ph.D. Tadaharu TSUMOTO, M.D., Ph.D. Shin OHKOUCHI Masao ITO, M.D., Ph.D. Shun-ichi AMARI, D.Eng. Susumu TONEGAWA, Ph.D Committee Senior Advisor Charles YOKOYAMA, Ph.D. Neural Circuit Function Developmental Gene Regulation

Kazama, Hokto

170

PhET Simulation: Density  

NSDL National Science Digital Library

This simulation provides a highly visual, intuitive way for students to explore how density is related to an object's mass and volume. Using a virtual water tank, users drop various objects to see what floats and what sinks. Use the mouse to submerge the object and see how much fluid it displaces. A scale is provided to measure the mass of the objects, with a density table available for view. Students can easily see why the density formula works, especially when they identify the "mystery" objects. Editor's Note: Scroll down on the page for exemplary lesson plans for grades 6-12 developed by the PhET project specifically to accompany the "Density" simulation. This item is part of a larger collection of simulations developed by the Physics Education Technology project (PhET).

2011-02-16

171

The ``Ultimate'' CMOS Device: A 2003 Perspective (Implications For Front-End Characterization And Metrology)  

NASA Astrophysics Data System (ADS)

The evolution of planar, conventional CMOS to non-classical CMOS devices as described in the International Technology Roadmap for Semiconductors (ITRS) is discussed. The benefits of strained silicon configurations to enhance the channel mobility, silicon-on-insulator (SOI) to enhance the reduction of residual parasitics and non-planar transistor device structures to improve control of the short-channel effects are discussed. The combination of the above enhancements, in conjunction with the current state-of-the art global efforts in high-k gate dielectrics, metal electrodes and elevated source/drain, offers a plethora of opportunities requiring careful assessment of the optimal solution for each organization's portfolio of products and projected market position. Several of these possible solutions for the "ultimate" CMOS device are discussed from today's perspective, with attention to the characterization and metrology for assessing these alternate device structures.

Huff, Howard R.; Zeitzoff, Peter M.

2003-09-01

172

Proximate and Ultimate Analyses of Bagasse, Sorghum and Millet Straws as Precursors for Active Carbons  

NASA Astrophysics Data System (ADS)

This study reports the proximate and ultimate characteristics of bagasse, sorghum and millet straws in relation to their suitability for producing highly porous carbon. The results of ad hoc samples indicated, that particle size has a decisive influence on the proximate characteristics of bagasse, sorghum and millet straws. The effects of particle size on weight loss characteristics; rates of dehydration and de-volatilization of the carbon precursors were used to assess particle sizes that may be appropriate for carbonization. Particle sizes of 425-1180 µm are thus, suggested to be the most desirable, for the production of good quality porous carbon. This range of particles of bagasse, sorghum and millet straws were associated with diminishing ash contents. However, the optimum particle size of the cellulosic materials that is expected to yield highly porous carbon with minimum ash contents is 1180 µm.

Lori, J. A.; Lawal, A. O.; Ekanem, E. J.

173

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

SciTech Connect

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.

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

2013-07-01

174

Fuzzy stochastic analysis of serviceability and ultimate limit states of two-span pedestrian steel bridge  

NASA Astrophysics Data System (ADS)

The paper deals with non-linear analysis of ultimate and serviceability limit states of two-span pedestrian steel bridge. The effects of random material and geometrical characteristics on limit states are analyzed. The Monte Carlo method was applied to stochastic analysis. For the serviceability limit state, also influence of fuzzy uncertainty of the limit deflection value on random characteristics of load capacity of variable action was studied. The results prove that, for the type of structure studied, the serviceability limit state is decisive from the point of view of design. The present paper opens a discussion on the use of stochastic analysis to verify the limit deflections given in the standards EUROCODES.

Kala, Zden?k; Sandovi?, GiedrÄ--

2012-09-01

175

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

USGS Publications Warehouse

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.

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

1982-01-01

176

Search for the "ultimate state" in turbulent Rayleigh-Bénard convection.  

PubMed

Measurements of the Nusselt number Nu and of temperature variations DeltaTb in the bulk fluid are reported for turbulent Rayleigh-Bénard convection of a cylindrical sample. They cover the Rayleigh-number range 10(9) less than or similar to Ra less than or similar to 3x10(14) using He (Prandtl number Pr=0.67), N2 (Pr=0.72) and SF6 (Pr=0.79 to 0.84) at pressures up to 15 bars and near-ambient temperatures. The sample had a height L=2.24 m and diameter D=1.12 m and was located in a new High-Pressure Convection Facility (HPCF) at the Max Planck Institute for Dynamics and Self-Organization in Göttingen, Germany. The data do not show the transition to an "ultimate regime" reported by Chavanne et al. and are consistent with the measurements of Niemela et al. PMID:19659152

Funfschilling, Denis; Bodenschatz, Eberhard; Ahlers, Guenter

2009-07-01

177

Search for the ``Ultimate State'' in Turbulent Rayleigh-Bénard Convection  

NASA Astrophysics Data System (ADS)

Measurements of the Nusselt number Nu and of temperature variations ?Tb in the bulk fluid are reported for turbulent Rayleigh-Bénard convection of a cylindrical sample. They cover the Rayleigh-number range 109?Ra?3×1014 using He (Prandtl number Pr=0.67), N2 (Pr=0.72) and SF6 (Pr=0.79 to 0.84) at pressures up to 15 bars and near-ambient temperatures. The sample had a height L=2.24m and diameter D=1.12m and was located in a new High-Pressure Convection Facility (HPCF) at the Max Planck Institute for Dynamics and Self-Organization in Göttingen, Germany. The data do not show the transition to an “ultimate regime” reported by Chavanne et al. and are consistent with the measurements of Niemela et al.

Funfschilling, Denis; Bodenschatz, Eberhard; Ahlers, Guenter

2009-07-01

178

Coordinated breathing in bottlenose dolphins (Tursiops truncatus) as cooperation: integrating proximate and ultimate explanations.  

PubMed

In this study, coordinated breathing was studied in 13 common bottlenose dolphins because of its links with spontaneous coordinated behaviors (e.g., swimming, foraging, and playing). A strong link was shown between dyadic coordination levels and age/sex categories when both association patterns and spatial formation are considered. This is consistent with a significant influence of social relationships on cooperating and contrasts with an economic perspective based on immediate material outcomes alone. This cooperation bias is explained by linking proximate processes that evoke performance with ultimate evolutionary processes driven by long-term adaptive outcomes. Proximate processes can include 2 kinds of immediate outcomes: material reinforcements and affective states associated with acts of cooperating that can provide positive reinforcement regardless of immediate material benefits (e.g., when there is a time lag between cooperative acts and material outcomes). Affective states can then be adaptive by strengthening social relationships that lead to eventual gains in fitness. PMID:18489227

Perelberg, Amir; Schuster, Richard

2008-05-01

179

An ultimate storage ring lattice with vertical emittance generated by damping wigglers  

E-print Network

We discuss the approach of generating round beams for ultimate storage rings using vertical damping wigglers (with horizontal magnetic field). The vertical damping wigglers provide damping and excite vertical emittance. This eliminates the need to generate large linear coupling that is impractical with traditional off-axis injection. We use a PEP-X compatible lattice to demonstrate the approach. This lattice uses separate quadrupole and sextupole magnets with realistic gradient strengths. Intrabeam scattering effects are calculated. The horizontal and vertical emittances are 22.3 pm and 10.3 pm, respectively, for a 200 mA, 4.5 GeV beam, with a vertical damping wiggler of a total length of 90 meters, peak field of 1.5 T and wiggler period of 100 mm.

Huang, Xiaobiao

2014-01-01

180

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

NASA Technical Reports Server (NTRS)

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.

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

1972-01-01

181

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

NSDL National Science Digital Library

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".

Grinnell, Max

2007-08-17

182

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

NASA Astrophysics Data System (ADS)

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?'.

Crawford, Ian A.

183

Addition of zinc methacrylate in dental polymers: MMP-2 inhibition and ultimate tensile strength evaluation.  

PubMed

This study evaluated the effect of zinc methacrylate (ZM) on the inhibition of matrix metalloproteinase 2 (MMP-2) and the ultimate tensile strength (UTS) of an experimental polymer. Enzymes secreted from mouse gingival tissues were analyzed by gelatin zymography in buffers containing 5 mM CaCl(2) (Tris-CaCl(2)) in 50 mM Tris-HCl buffer with various concentrations of ZM (0.5, 1, 2, 4, 8, and 16 mM). The matrix metalloproteinases present in the conditioned media were characterized by immunoprecipitation. The polymer UTS evaluation was performed in eight groups with various concentrations of ZM (0, 0.5, 1, 2.5, 5, 10, 20, and 30 wt.%), in a mechanical testing machine. MMP-2 (62 kDa) was detected in the zymographic assays and inhibited by ZM in all tested concentrations. UTS data were submitted to one-way ANOVA and Tukey's test (??=?0.05), and no significant differences were observed among groups, except in the polymer containing 30% ZM, presenting a significantly lower value when compared with the control group (p?ultimate tensile strength of the polymer. Zinc methacrylate is a metalloproteinase inhibitor that can be copolymerized with other methacrylate monomers. Yet, the addition of ZM did not affect the resin bond strength. Thus, in vivo tests should be performed to evaluate the performance of this material. PMID:21448634

Henn, Sandrina; de Carvalho, Rodrigo Varella; Ogliari, Fabrício Aulo; de Souza, Ana Paula; Line, Sergio Roberto Peres; da Silva, Adriana Fernandes; Demarco, Flávio Fernando; Etges, Adriana; Piva, Evandro

2012-04-01

184

Cem Kaner, Ph.D., J.D. Pat Bond, Ph.D.  

E-print Network

Cem Kaner, Ph.D., J.D. Professor Director Pat Bond, Ph.D. Associate Professor Scott Tilley, Ph.D. Associate Professor Mike Andrews, Ph.D. Assistant Professor James Whittaker, Ph.D. Professor MISSION Create is active investigation of a product by an outsider who is more focused on the acceptability of the product

185

PhDAHP1 is required for floral volatile benzenoid/phenylpropanoid biosynthesis in Petunia × hybrida cv 'Mitchell Diploid'.  

PubMed

Floral volatile benzenoid/phenylpropanoid (FVBP) biosynthesis consists of numerous enzymatic and regulatory processes. The initial enzymatic step bridging primary metabolism to secondary metabolism is the condensation of phosphoenolpyruvate (PEP) and erythrose-4-phosphate (E4P) carried out via 3-DEOXY-D-ARABINO-HEPTULOSONATE-7-PHOSPHATE (DAHP) synthase. Here, identified, cloned, localized, and functionally characterized were two DAHP synthases from the model plant species Petunia × hybrida cv 'Mitchell Diploid' (MD). Full-length transcript sequences for PhDAHP1 and PhDAHP2 were identified and cloned using cDNA SMART libraries constructed from pooled MD corolla and leaf total RNA. Predicted amino acid sequence of PhDAHP1 and PhDAHP2 proteins were 76% and 80% identical to AtDAHP1 and AtDAHP2 from Arabidopsis, respectively. PhDAHP1 transcript accumulated to relatively highest levels in petal limb and tube tissues, while PhDAHP2 accumulated to highest levels in leaf and stem tissues. Through floral development, PhDAHP1 transcript accumulated to highest levels during open flower stages, and PhDAHP2 transcript remained constitutive throughout. Radiolabeled PhDAHP1 and PhDAHP2 proteins localized to plastids, however, PhDAHP2 localization appeared less efficient. PhDAHP1 RNAi knockdown petunia lines were reduced in total FVBP emission compared to MD, while PhDAHP2 RNAi lines emitted 'wildtype' FVBP levels. These results demonstrate that PhDAHP1 is the principal DAHP synthase protein responsible for the coupling of metabolites from primary metabolism to secondary metabolism, and the ultimate biosynthesis of FVBPs in the MD flower. PMID:24815009

Langer, Kelly M; Jones, Correy R; Jaworski, Elizabeth A; Rushing, Gabrielle V; Kim, Joo Young; Clark, David G; Colquhoun, Thomas A

2014-07-01

186

The pH of antiseptic cleansers  

PubMed Central

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

Kulthanan, Kanokvalai; Varothai, Supenya; Nuchkull, Piyavadee

2014-01-01

187

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

SciTech Connect

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.

Jones, IM

2002-01-09

188

The ultimate question of origins: God and the beginning of the Universe.  

NASA Astrophysics Data System (ADS)

Both cosmology and philosophy trace their roots to the wonder felt by the ancient Greeks as they contemplated the Universe. The ultimate question remains why the Universe exists rather than nothing. This question led Leibniz to postulate the existence of a metaphysically necessary being, which he identified as God. Leibniz's critics, however, disputed this identification, claiming that the space-time universe itself may be the metaphysically necessary being. The discovery during this century that the Universe began to exist, however, calls into question the Universe's status as metaphysically necessary, since any necessary being must be eternal in its existence. Although various cosmogonic models claiming to avert the beginning of the Universe predicted by the standard model have been and continue to be offered, no model involving an eternal universe has proved as plausible as the standard model. Unless we are to assert that the Universe simply sprang into being uncaused out of nothing, we are thus led to Leibniz's conclusion. Several objections to inferring a supernatural cause of the origin of the Universe are considered and found to be unsound.

Craig, W. L.

189

The Ultimate Question of Origins: God and the Beginning of the Universe  

NASA Astrophysics Data System (ADS)

Both cosmology and philosophy trace their roots to the wonder felt by the ancient Greeks as they contemplated the universe. The ultimate question remains why the universe exists rather than nothing. This question led Leibniz to postulate the existence of a metaphysically necessary being, which he identified as God. Leibniz's critics, however, disputed this identification, claiming that the space-time universe itself may be the metaphysically necessary being. The discovery during this century that the universe began to exist, however, calls into question the universe's status as metaphysically necessary, since any necessary being must be eternal in its existence. Although various cosmogonic models claiming to avert the beginning of the universe predicted by the standard model have been and continue to be offered, no model involving an eternal universe has proved as plausible as the standard model. Unless we are to assert that the universe simply sprang into being uncaused out of nothing, we are thus led to Leibniz's conclusion. Several objections to inferring a supernatural cause of the origin of the universe are considered and found to be unsound.

Craig, William Lane

1999-12-01

190

The Ultimate Monte Carlo: Studying Cross-Sections With Cosmic Rays  

NASA Technical Reports Server (NTRS)

The high-energy physics community has been discussing for years the need to bring together the three principal disciplines that study hadron cross-section physics - ground-based accelerators, cosmic-ray experiments in space, and air shower research. Only recently have NASA investigators begun discussing the use of space-borne cosmic-ray payloads to bridge the gap between accelerator physics and air shower work using cosmic-ray measurements. The common tool used in these three realms of high-energy hadron physics is the Monte Carlo (MC). Yet the obvious has not been considered - using a single MC for simulating the entire relativistic energy range (GeV to EeV). The task is daunting due to large uncertainties in accelerator, space, and atmospheric cascade measurements. These include inclusive versus exclusive cross-section measurements, primary composition, interaction dynamics, and possible new physics beyond the standard model. However, the discussion of a common tool or ultimate MC might be the very thing that could begin to unify these independent groups into a common purpose. The Offline ALICE concept of a Virtual MC at CERN s Large Hadron Collider (LHC) will be discussed as a rudimentary beginning of this idea, and as a possible forum for carrying it forward in the future as LHC data emerges.

Wilson, Thomas L.

2007-01-01

191

A novel pathway to the ultimate mutagens of aromatic amino and nitro compounds.  

PubMed

Photolysis of arylazides in aqueous media was recently found to generate presumed nitrenium ions, species which are generally considered as the ultimate mutagens/carcinogens derived from arylamines and nitroarenes. The primary photolysis products of arylazides, the arylnitrenes, can possibly react as electrophiles themselves, or they can be protonated and thus form the electrophilic nitrenium ions. Numerous arylazides and aryldiazides can be photoactivated to short-lived mutagens detectable in Salmonella typhimurium TA98. Structure-activity comparisons between arylazides and the matching arylamines and nitroarenes show correlations; e.g., phenyl azide and methyl-substituted phenyl azides are not mutagenic or only weakly mutagenic like aniline, nitrobenzene, and their methyl homologues, whereas 4-azidodiphenyl, 2-azidofluorene, 1-azidopyrene, azido-IQ, and azido-isoIQ are increasingly mutagenic in that order, like the matching amino and nitro compounds. It is hypothesized on the basis of these data that the nitrene/nitrenium ion is the reactive intermediate common to the three mutagenic pathways and that the reaction of the nitrene/nitrenium ion with DNA is rate limiting for the overall mutagenic process in Salmonella. The photochemical generation from arylazides of the reactive species, the nitrene/nitrenium ions, opens new perspectives for the understanding of the genotoxic activity of arylamines and nitroarenes in general and, specifically, of the food mutagens/carcinogens of the IQ type. PMID:2272323

Wild, D

1990-08-01

192

Assessment of composite failure and ultimate strength without experiment on composite  

NASA Astrophysics Data System (ADS)

This paper attempts to estimate the ultimate strength of a laminated composite only based on its constituent properties measured independently. Three important issues involved have been systematically addressed, i.e., stress calculation for the constituent fiber and matrix materials, failure detection for the lamina and laminate upon the internal stresses in their constituents, and input data determination of the constituents from monolithic measurements. There are three important factors to influence the accuracy of the strength prediction. One is the stress concentration factor (SCF) in the matrix. Another is matrix plasticity. The third is thermal residual stresses in the constituents. It is these three factors, however, that have not been sufficiently well realized in the composite community. One can easily find out the elastic and strength parameters of a great many laminae and laminates in the current literature. Unfortunately, necessary information to determine the SCF, the matrix plasticity, and the thermal residual stresses of the composites is rare or incomplete. A useful design methodology is demonstrated in the paper.

Huang, Zheng-Ming; Liu, Ling

2014-08-01

193

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

SciTech Connect

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.

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

2012-04-06

194

Roland Badeau, Ph.D. French Nationality  

E-print Network

;Scientific production · Habilitation and Ph.D. Theses · 19 peer reviewed journal papers · 50 peer reviewedRoland Badeau, Ph.D. French Nationality Born August 28, 1976 in Marseille, France Associate-negative decompositions with application to music signal processing". 2001-2005 : Ph.D. degree from the �cole Nationale

Badeau, Roland

195

Ph.D. Assessment Form Student Name  

E-print Network

Ph.D. Assessment Form Student Name: Major Advisor: Date: Outcome 1: Graduates will be able to successfully design and conduct original research in their specialty areas. Criterion: Ph.D. candidates related disciplinary areas. Criterion: Ph.D. students will pass their initial preliminary examination

196

Administration Noma Bennett Anderson, PhD  

E-print Network

D Department of Occupational Therapy Chair (Interim) Ann Nolen, PsyD Vice Chair Lawrence Faulkner, PhAdministration Dean Noma Bennett Anderson, PhD Assistant Deans Faculty and Academic Affairs RebeccaD Department of Physical Therapy Chair and Program Director CarolCountLikens,PT,PhD,MBA Department of Physician

Cui, Yan

197

Inexpensive and Disposable pH Electrodes  

ERIC Educational Resources Information Center

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

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

2010-01-01

198

PhET Simulation: Sound  

NSDL National Science Digital Library

This interactive simulation allows users to analyze the properties of sound waves. Frequency and amplitude can be controlled, and users can enable audio tones to explore how pitch is related to frequency. Other options allow users to experiment with constructive and destructive interference by moving positions of speakers and listeners. Tools are also provided to measure wavelengths of various frequencies. Experimenting with interference from a wall and exploring sound in environments without air pressure are also possible. This simulation is part of a large and growing collection developed by the Physics Educational Technology Project using research-based principles. See the Related Materials below for a link to clicker questions and tutorials designed specifically for this simulation by the PhET team.

2008-10-29

199

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

SciTech Connect

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 codes; and to assess new piping code allowable stress rules. Under this program, NUPEC has performed a large-scale seismic proving test of a representative nuclear power plant piping system. In support of the proving test, a series of materials tests, static and dynamic piping component tests, and seismic tests of simplified piping systems have also been performed. As part of collaborative efforts between the United States and Japan on seismic issues, the US Nuclear Regulatory Commission (USNRC) and its contractor, the Brookhaven National Laboratory (BNL), are participating in this research program by performing pre-test and post-test analyses, and by evaluating the significance of the program results with regard to safety margins. This paper describes BNL's pre-test analysis to predict the elasto-plastic response for one of NUPEC's simplified piping system seismic tests. The capability to simulate the anticipated ratcheting response of the system was of particular interest. Analyses were performed using classical bilinear and multilinear kinematic hardening models as well as a nonlinear kinematic hardening model. Comparisons of analysis results for each plasticity model against test results for a static cycling elbow component test and for a simplified piping system seismic test are presented in the paper.

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

2003-08-17

200

Ultimate Tensile Strength as a Function of Test Rate for Various Ceramic Matrix Composites at Elevated Temperatures  

NASA Technical Reports Server (NTRS)

Ultimate tensile strength of five different continuous fiber-reinforced ceramic composites, including SiC/BSAS (2D 2 types), SiC/MAS-5 (2D), SiC/SiC (2D enhanced), and C/SiC(2D) was determined as a function of test rate at I 100 to 1200 'C in air. All five composite materials exhibited a significant dependency of ultimate strength on test rate such that the ultimate strength decreased with decreasing 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) for SiC/BSAS 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.

Choi, Sung R.; Bansal, Narottam P.; Gyekenyesi, John P.

2002-01-01

201

INFLUENCE OF JOINING LOCATIONS AND PLATE WIDTH ON ULTIMATE STRENGTH OF ALUMINUM ALLOY PLATES IN IN-PLANE BENDING  

NASA Astrophysics Data System (ADS)

The ultimate strength of aluminum alloy plates in in-plane bending is investigated considering joining locations and plate width by the elastic-plastic large deflection analysis with FEM. The aluminum alloys taken into account are heat-treated A6061-T6 and A6005C-T5 and non-heat-treated A5083-O. The softening of material and the residual stresses caused by the friction stir welding (FSW) and the MIG welding are introduced in the analysis. It is shown that the joining locations and the width of plate have a great influence on the ultimate strength. The formula which gives the curves for the ultimate strength of plates in in-plane bending considering joining locations and plate width are proposed, based on the results of the FEM analysis.

Okura, Ichiro; Ogasahara, Koji

202

PhD in Sustainable Development PhD in Sustainable Development  

E-print Network

PhD in Sustainable Development PhD in Sustainable Development 2013-2014 Handbook John Colin Mutter Director of Graduate Studies john.mutter@sipa.columbia.edu 212-854-0716 #12;2 PhD in Sustainable................................................................................................ 39 #12;3 PhD in Sustainable Development I. About the Program The sustainability of development

Qian, Ning

203

arXiv:1204.2401v2[physics.soc-ph]12Apr2012 Controlling complex networks: How much energy is needed?  

E-print Network

arXiv:1204.2401v2[physics.soc-ph]12Apr2012 Controlling complex networks: How much energy is needed, Shanghai, China (Dated: May 30, 2012) The outstanding problem of controlling complex networks is relevant research on controllability toward ultimate control of complex networked dynamical systems. PACS numbers

Li, Baowen

204

Functional photoacoustic microscopy of pH  

NASA Astrophysics Data System (ADS)

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.

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

2012-02-01

205

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

PubMed

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

Brown

1998-12-01

206

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

PubMed Central

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

2012-01-01

207

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

SciTech Connect

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).

Jaya Shankar Tumuluru

2012-07-01

208

Optical and tunneling microscopy and spectroscopy at the ultimate spatial limit  

NASA Astrophysics Data System (ADS)

The combination of optical detection system with a scanning tunneling microscope (STM) leads to the possibility of resolving radiative transition probability with the ultrahigh spatial resolution of STM in real space. This opens an innovative approach toward revealing the correlation between molecular structure, electronic characteristics, and optical properties. This thesis describes a series of experiments that manifests this correlation, including atomic silver chains and single porphine molecules. In atomic silver chains, the number and positions of the emission maxima in the photon images match the nodes in the dI/d V images of "particle-in-a-box" states. This surprising correlation between the emission maxima and nodes in the density of states is a manifestation of Fermi's golden rule in real space for radiative transitions, which provides an understanding of the mechanism of STM induced light emission. From single porphine molecules, orthogonal spatial contrast of two types of vibronic coupling is resolved by both photon spectroscopy and vibronic-mode-selected photon images. Intramolecular transitions from the two orthogonal LUMOs individually couple to different molecular normal modes. This is the first demonstration of the photon emission probability of a single molecule and its direct correlations with the molecular orbitals. This also provides the first real space experimental evidence to separate the tangled effects of molecular conformations and nano-environments on the inhomogeneity of molecular emission. DSB molecules are found to have two conformational isomers and one of them shows surface chirality. All these conformers and enantiomers can be switched to each other by electron injection. Different DSB conformers present distinct manipulation dynamics, which demonstrate how different conformations and their preferred adsorption geometries can have pronounced influence on the molecular mechanics on the surface. Overall, this thesis studies the very fundamental nature of single molecules and artificial nanostructures by integrating all kinds of important functions of STM: topography, spectroscopy, manipulation, and photon emission. Detailed correlations between the emission patterns and orbital structures are revealed by the ultimate spatial resolution of our "STM photon microscopy".

Chen, Chi

209

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

ERIC Educational Resources Information Center

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.…

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

2014-01-01

210

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

Microsoft Academic Search

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

Genn Saji

2006-01-01

211

Effect of Two Strength Reducing Techniques on the Ultimate Tensile Strength of AISI 4130 Steel: Rocket Motor Case Venting.  

National Technical Information Service (NTIS)

This work is part of a continuing program to find an economical, but safe and reliable, way to vent rocket motors subjected to an external fire. In this study, the effect on the ultimate strength of rocket motor case material of two methods of strength re...

M. S. Wright, R. F. Kubin

1984-01-01

212

Experimental environmental hydraulics The ocean has long been considered as the ultimate receiving body for water-borne waste  

E-print Network

Experimental environmental hydraulics The ocean has long been considered as the ultimate receiving hydraulics with its concern for the disposal of and accidental spills of effluents from smoke stacks, which is proportional to a characteristic velocity of the jet or plume (Morton et al. 1956). Whereas

Barthelat, Francois

213

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 2010-04-01 true Diesel fuel and kerosene; claims by registered...Manufacturers Taxes § 48.6427-9 Diesel fuel and kerosene; claims by registered...certain registered ultimate vendors of taxed diesel fuel and kerosene may claim the...

2010-04-01

214

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 2011-04-01 false Diesel fuel and kerosene; claims by registered...Manufacturers Taxes § 48.6427-9 Diesel fuel and kerosene; claims by registered...certain registered ultimate vendors of taxed diesel fuel and kerosene may claim the...

2011-04-01

215

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 2013-04-01 false Diesel fuel and kerosene; claims by registered...Manufacturers Taxes § 48.6427-9 Diesel fuel and kerosene; claims by registered...certain registered ultimate vendors of taxed diesel fuel and kerosene may claim the...

2013-04-01

216

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 2012-04-01 false Diesel fuel and kerosene; claims by registered...Manufacturers Taxes § 48.6427-9 Diesel fuel and kerosene; claims by registered...certain registered ultimate vendors of taxed diesel fuel and kerosene may claim the...

2012-04-01

217

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...

218

Queerspawn Speak out: A Review of "Let's Get This Straight: The Ultimate Handbook for Youth with LGBTQ Parents"  

ERIC Educational Resources Information Center

"Let's Get This Straight: The Ultimate Handbook for Youth With LGBTQ Parents" provides an engaging and accessible set of tools for youth from LGBTQ-headed families. The stories and resources shared encourage these youth to take pride in their families, value their diverse experiences, and work against homophobia, transphobia, and other forms of…

Ryan, Caitlin L.

2012-01-01

219

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...

220

Chlorophyll-specific absorption coefficients and pigments of phytoplankton off Sanriku, northwestern North Pacific  

Microsoft Academic Search

The variety in shape and magnitude of thein vivo chlorophyll-specific absorption spectra of phytoplankton was investigated in relation to differences in pigment composition\\u000a off Sanriku, northwestern North Pacific. Site-to-site variations of the absorption coefficients,a\\u000a \\u000a ph\\u000a \\u000a * (?), and pigment composition were clearly observed. At warm-streamer stations, higher values ofa\\u000a \\u000a ph\\u000a \\u000a * (440) anda\\u000a ph\\u000a * (650) were found with relatively

Koji Suzuki; Motoaki Kishino; Kousei Sasaoka; Sei-Ichi Saitoh; Toshiro Saino

1998-01-01

221

Frequently Asked Questions for Parents of Children with PH  

MedlinePLUS

... International PH News and Projects Let Me Breathe Music Video Families Patients Newly Diagnosed Request an Envelope ... International PH News and Projects Let Me Breathe Music Video Help spread PH awareness and share PH ...

222

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...

223

Nursing PhD 2010 Edition  

E-print Network

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

Saskatchewan, University of

224

Salivary pH: A diagnostic biomarker  

PubMed Central

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

Baliga, Sharmila; Muglikar, Sangeeta; Kale, Rahul

2013-01-01

225

Middle School and pH?  

ERIC Educational Resources Information Center

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…

Herricks, Susan

2007-01-01

226

PhD Studentships Biomedical Cell Biology  

E-print Network

The Division of Biomedical Cell Biology at Warwick Medical School seeks applications from candidates for Ph edge of medically relevant cell biology, preparing students for careers in academia, industryPhD Studentships Biomedical Cell Biology Funding available for UK and non-UK applicants

Goldschmidt, Christina

227

Curriculum Vitae ANNE ZISSU, PH.D.  

E-print Network

) The Effect of Probabilistic vs. Deterministic Valuation of Securitized Senior Life Settlements on the LevelCurriculum Vitae ANNE ZISSU, PH.D. CHAIRPERSON New York City College of Technology Department AND UNIVERSITY CENTER OF THE CITY UNIVERSITY OF NEW YORK Ph.D. in Economics (Concentration in Finance

Aronov, Boris

228

NEUROPSYCHOLOGIST Louis Costa Ph.D.  

E-print Network

NEUROPSYCHOLOGIST Louis Costa Ph.D. I obtained my Ph.D. in Clinical Psychology from Teachers at the Bronx VA Medical Center. On the day I deposited copies of my doctoral dissertation with my mentor, Dr intelligence, energy, enthusiasm, and charisma. I eagerly accepted the fellowship when it was offered. I

Brown, Lucy L.

229

Parametric Pumping with pH  

Microsoft Academic Search

Separations of aqueous solutions of Na and K have been obtained using a recuperative pH parametric pumping system. A chromatographic column of cation exchange resin was subjected simultaneously to an alternating axial displacement of solution and to an alternating pH gradient. The synchronous coupling of these two actions produced a concentration enrichment of 15–80% above the feed.

J. E. Sabadell; N. H. Sweed

1970-01-01

230

Colorimetric determination of pH  

SciTech Connect

There is a need for a simple, rapid, reliable means for determining pH values of concentrated, high salt solutions without reliance on human eye and ambient light. The method comprises the steps of preparing a set of reference solutions, measuring the light absorption by each reference solution, adding indicator dye to each reference solution, measuring the light absorption by each such reference mixture, comparing the two solutions to determine the dye color at each pH, normalizing the spectra of mixture to the isosbestic point, and matching the color of the pH of the solution to one of the colors of the pHs in the reference solution set. In this way, the pH can be determined to within 0.1 pH unit, a far more precise method than using the human eye.

Baumann, E.W.; Buchanan, B.R.

1991-12-31

231

CLYDE L. 0 INGS, M.D.,Ph.D. RICHARD G. SNYDER, Ph.D.  

E-print Network

.S. CHILDREN FOR PRODUCT SAFETY DESIGN FINAL REPORT OCTOBER 1975 CLYDE L. OWINGS, M.D., Ph.D. Departmentt aracteri CLYDE L. 0 INGS, M.D.,Ph.D. RICHARD G. SNYDER, Ph.D. RICHARD H. NORC October 1975 Sponsored by Consumer Product Safety Commission #12;#12;CONTRACT FDA-73-32 STRENGTH CHARACTERISTICS OF U

232

Laser spark ignition of premixed methane-air mixtures: parameter measurements and determination of key factors for ultimate ignition results.  

PubMed

In this study, we present an experimental investigation of the parameters of the laser spark ignition of premixed methane-air mixtures and the determination of the key factors for the ultimate ignition result. Ignition is achieved in a mesh honeycomb burner using the 1064 nm output of a neodymium-doped yttrium aluminum garnet (Nd : YAG) laser. All pertinent laser ignition parameters, including the minimum ignition energy, the ignition time and blow out time, and the effects that the variation of experimental conditions, such as the spark energy, ignition position, equivalence ratio (ER), and flow rate, have on these parameters have been addressed systematically. To identify the key factors for the ultimate result of laser ignition, several parameters of the ignition processes are measured simultaneously, with an emphasis given to the temporal behavior of the hydroxyl (OH) radicals in relation to the data regarding the spark energy and the local ER. A clear finding of the study is that successful ignition events are always related to higher OH radical photon emissions, considered to be proportional to the concentration level of the OH radicals present, thus indicating a direct link between the OH level at early times (on a microsecond scale) and the ultimate result of laser ignition. Two-dimensional correlation plots of the spark energy, local ER, and OH radical photon count at early times with the ultimate results of laser ignition indicate that the spark energy and local ER do not play a critical role in determining the success or failure of the ignition and that the OH concentration in the early time range is the key factor in determining the final fate of laser ignition. Finally, on the basis of the results obtained here and in the existing literature, some considerations of the mechanism of laser ignition are presented. PMID:25226251

Li, Xiaohui; Smith, Benjamin W; Omenetto, Nicoló

2014-09-01

233

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

Microsoft Academic Search

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

K. R. Arpin; T. F. Trimble

2003-01-01

234

Can the chemical reactivity of an ultimate carcinogen be related to its carcinogenicity? An application to propylene oxide.  

PubMed

In this article we report calculations of the activation free energy for a chemical reaction between propylene oxide and DNA, in particular with the guanine at the N7 position. Calculations were performed using Hartree-Fock and MP2 methods in conjunction with flexible basis sets. The effects of solvation were considered using the Langevin dipoles and solvent reaction field methods. The calculated activation free energies are in good agreement with the experimental value of 25.36 kcal/mol. Moreover, the reactivities of a series of ultimate carcinogens of the epoxy type toward DNA are shown to be related to their carcinogenicities. Higher reactivity is generally associated with higher carcinogenicity, although transport properties, reactions with ultimate carcinogen scavengers, and the DNA correction mechanism are also very important. It is very likely that the window of reactivity rather than a high reactivity value is the relevant measure of carcinogenicity, since highly reactive ultimate carcinogens interact with water and proteins before they reach DNA. PMID:22889582

Mavri, Janez

2013-02-01

235

Colorimetric Determination of pH.  

ERIC Educational Resources Information Center

Presented is an activity in which the pH of a solution can be quantitatively measured using a spectrophotometer. The theory, experimental details, sample preparation and selection, instrumentation, and results are discussed. (CW)

Tucker, Sheryl; And Others

1989-01-01

236

Fetal scalp pH testing  

MedlinePLUS

... continue labor, or if a forceps delivery or cesarean section might be the best route of delivery. ... be delivered quickly, either by forceps or by cesarean section. Fetal scalp pH testing may need to ...

237

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

238

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

239

Ilsoon Lee, Ph. D. AssociateProfessor  

E-print Network

applications Teaching Fluid Mechanics, Heat Transfer, Molecular Engineering, Molecular Self Chemical Reaction Engineering CHE 802: Research Methods CHE 311: Fluid Flow and Heat Transfer1 Ilsoon Lee, Ph. D. AssociateProfessor 2527EngineeringBuilding DepartmentofChemicalEngineering

Lee, Ilsoon

240

PhD Studentships Biomedical Cell Biology  

E-print Network

applicants ONLY The Division of Biomedical Cell Biology at Warwick Medical at the cuCng edge of medically relevant cell biology, preparing studentsPhD Studentships Biomedical Cell Biology Funding available for UK and EU

Davies, Christopher

241

Ph.D. Handbook Department of English  

E-print Network

for their Ph.D. studies-- Literary and Cultural Studies, Film and Media Studies Maun Kay Stone Interim Director of Graduate Studies Graduate Program degrees. Our program is designed around three primary concentrations--Literary

Berdichevsky, Victor

242

Grit Denker, Ph.D. SRI International  

E-print Network

Grit Denker, Ph.D. SRI International Senior Computer Scientist Computer Science Laboratory and a machine -- "the last meter bandwidth." bRIGHT will increase efficiency to Lockheed Martin in DARPA's Behavioral Learning for Adaptive Electronic Warfare (BLADE

Denker, Grit

243

Curriculum Vitae Andrs Guerra, Ph.D.  

E-print Network

Design client, Elementary School Science Fair judge, Youth Track and Youth Softball volunteer coach: Richard Huggins, PhD candidate (2013), Division of Environmental Science and Engineering, Colorado School

244

Measurement of soil pH  

Microsoft Academic Search

A number of experimental results are presented which show the variation of the pH values of several soils when samples of each are shaken with CaClâ solutions of different concentrations. These results are then interpreted on the basis of the ratio law-derived from the Gouy theory of the electrical double layer - and it is shown that the pH values

R. K. Schofield; A. Wormald Taylor

1955-01-01

245

Traceable measurements of pH  

Microsoft Academic Search

The primary method for pH is based on the measurement of the potential difference of an electrochemical cell containing a\\u000a platinum hydrogen electrode and a silver\\/silver chloride reference electrode, often called a Harned cell. Assumptions must\\u000a be made to relate the operation of this cell to the thermodynamic definition of pH. National metrology institutes use the\\u000a primary method to assign

Petra Spitzer

2001-01-01

246

Mechanisms of Intragastric pH Sensing  

Microsoft Academic Search

Luminal amino acids and lack of luminal acidity as a result of acid neutralization by intragastric foodstuffs are powerful\\u000a signals for acid secretion. Although the hormonal and neural pathways underlying this regulatory mechanism are well understood,\\u000a the nature of the gastric luminal pH sensor has been enigmatic. In clinical studies, high pH, tryptic peptides, and luminal\\u000a divalent metals (Ca2+ and

Tyralee Goo; Yasutada Akiba; Jonathan D. Kaunitz

2010-01-01

247

Development of pH measurement system for legal traceability of pH standard solutions.  

PubMed

The best reproducible technology of pH measurement for precise pH buffer solutions regulated by Japanese Industrial Standards (JIS) was studied. A pH meter was devised with a high resolution of +/- 0.0001 pH. An 18-bit analog-to-digital converter is used, one-bit resolution corresponding to 0.0019 mV (ca. 0.000032 pH) against an input electrode potential +/- 500 mV. Digital data were treated smoothly for some types of noise, a reproducibility of +/- 0.0002 pH being obtained with a potentiometer. A flow cell was devised to attain temperature control within +/- 0.03 degrees C and air-tight measurement prevented contamination with carbon dioxide. Also, the flow cell has a structure such that potassium chloride (KCl) inner solution effused from a ceramic junction of the reference electrode designed so as not to touch the glass membrane. A combination pH electrode (a glass electrode and a reference electrode) was assembled to minimize the dead volume of sample solution. This highly sensitive pH measuring system, consisting of a pH meter, a flow cell, a combination pH electrode, a circulating water thermostat and a peristaltic pump, was used for the certification of pH standard solutions in Japanese metrological law. The performance of this system was within +/- 0.0006 pH reproducibility and 20-30 min response time (5 min within +/- 0.0002 pH) at a sample flow rate of 3 ml min (-1). PMID:18966620

Ito, S; Hachiya, H; Baba, K; Eto, M; Asano, Y; Wada, H

1996-09-01

248

Family Size Preferences in Europe and USA: Ultimate Expected Number of Children. Comparative Studies Number 26: ECE Analyses of Surveys in Europe and USA.  

ERIC Educational Resources Information Center

This survey analysis compares fertility levels in the United States and European countries, discusses socioeconomic influences in ultimate expected family size, and examines birth rate trends. The average number of ultimately expected children varies from 2.13 children per woman in Bulgaria to 2.80 in Spain. Eighty to 90 percent of U.S. and…

Berent, Jerzy

249

Chalcogen-Rich Lanthanide Clusters: Compounds with Te2-, (TeTe)2-, TePh, TeTePh, (TeTeTe(Ph)TeTe)5-, and [(TeTe)4TePh]9-Ligands; Single  

E-print Network

ion by pyridine, to give the pentaanion (µ-2 -2 -Te2Te(Ph)Te2).5- In the Tm compound, the displaced Te with PhTeTePh and elemental Te in pyridine to give (py)yLn4(Te)(TeTe)2(TeTeTe(Ph)- TeTe)(TexTePh) (Ln ) Sm

Lawson, Catherine L.

250

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

SciTech Connect

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.

K.R. Arpin; T.F. Trimble

2003-04-01

251

Ultimate lower lethal temperature of red drum Sciaenops Ocellatus as a function of water hardness and salinity  

E-print Network

medium, temperature tolerance, gr owth, and sur v i v al sho ul d be increased. The blood plasma of many fish species is isosmotic with seawater of 10 to 14 g/L TDS (Kinne 1964). In their classic work, Loch and Wasteneys (1912) found that Fundulus... lethal temper ature of juvenile red dr um at various combinations of salinity and water har d ness. MATERIALS AND METHODS The method of' gradual chil ling was appl ied to determine ultimate lower lethal temperature of juvenile red drum as a function...

Procarione, Lynne S

2012-06-07

252

MRF with adjustable pH  

NASA Astrophysics Data System (ADS)

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.

Jacobs, Stephen D.

2011-10-01

253

Diatoms and pH Reconstruction  

NASA Astrophysics Data System (ADS)

Palaeolimnological diatom data comprise counts of many species expressed as percentages for each sample. Reconstruction of past lake-water pH from such data involves two steps; (i) regression, where responses of modern diatom abundances to pH are modelled and (ii) calibration where the modelled responses are used to infer pH from diatom assemblages preserved in lake sediments. In view of the highly multivariate nature of diatom data, the strongly nonlinear response of diatoms to pH, and the abundance of zero values in the data, a compromise between ecological realism and computational feasability is essential. The two numerical approaches used are (i) the computationally demanding but formal statistical approach of maximum likelihood (ML) Gaussian logit regression and calibration and (ii) the computationally straightforward but heuristic approach of weighted averaging (WA) regression and calibration. When the Surface Water Acidification Project (SWAP) modern training set of 178 lakes is reduced by data-screening to 167 lakes, WA gives superior results in terms of lowest root mean squared errors of prediction in cross-validation. Bootstrapping is also used to derive prediction errors, not only for the training set as a whole but also for individual pH reconstructions by WA for stratigraphic samples from Round Loch of Glenhead, southwest Scotland covering the last 10 000 years. These reconstructions are evaluated in terms of lack-of-fit to pH and analogue measures and are interpreted in terms of rate of change by using bootstrapping of the reconstructed pH time-series.

Birks, H. J. B.; Line, J. M.; Juggins, S.; Stevenson, A. C.; Ter Braak, C. J. F.

1990-03-01

254

pH Dependence of Sphingosine Aggregation  

PubMed Central

Sphingosine and sphingosine 1-phosphate (S1P) are sphingolipid metabolites that act as signaling messengers to activate or inhibit multiple downstream targets to regulate cell growth, differentiation, and apoptosis. The amphiphilic nature of these compounds leads to aggregation above their critical micelle concentrations (CMCs), which may be important for understanding lysosomal glycosphingolipid storage disorders. We investigated the aggregation of sphingosine and S1P over a comprehensive, physiologically relevant range of pH values, ionic strengths, and lipid concentrations by means of dynamic light scattering, titration, and NMR spectroscopy. The results resolve discrepancies in literature reports of CMC and pKa values. At physiological pH, the nominal CMCs of sphingosine and S1P are 0.99 ± 0.12 ?M (pH 7.4) and 14.35 ± 0.08 ?M (pH 7.2), respectively. We find that pH strongly affects the aggregation behavior of sphingosine by changing the ionic and hydrogen-bonding states; the nominal critical aggregation concentrations of protonated and deprotonated sphingosine are 1.71 ± 0.24 ?M and 0.70 ± 0.02 ?M, respectively. NMR measurements revealed that the NH3+–NH2 transition of sphingosine occurs at pH 6.6, and that there is a structural shift in sphingosine aggregates caused by a transition in the predominant hydrogen-bonding network from intramolecular to intermolecular that occurs between pH 6.7 and 9.9. PMID:19348755

Sasaki, Hirotaka; Arai, Hiromi; Cocco, Melanie J.; White, Stephen H.

2009-01-01

255

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

Microsoft Academic Search

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

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

2007-01-01

256

Relationship between the ratio of formation exposure length to formation thickness and ultimate oil recovery from horizontal wells  

SciTech Connect

This paper discusses the relationship between the ratio of exposed formation length to oil-bearing formation thickness and ultimate oil recovery from horizontal wells. Horizontal technology is usually chosen as the best practical solution to improve the ultimate oil recovery and cope with the water and gas coning problems encountered in many oil fields. the intent being to reduce the water production, to minimize the cost of the required treatment of water at surface, and reduce the gas production to limit the consequent energy reduction. Horizontal wells drilled and tested have given confidence to the use of the technique in future operations in different fields in the Middle East and particularly in Oman. Nevertheless, the immediate effects of raised oil output is not to be at the expense of possible lower optimum recoveries. For that reason, numerical sensitivity analyses on reservoir parameters, such as the ratio of exposed formation length to formation thickness at various maximum allowable liquid rates, have been carried out. Recommendations on the water coning horizontal drilling implementations and ways for reducing water coning effects are outlined and thoroughly discussed for various reservoir thicknesses. Adequate horizontal drilling with a suitable maximum production rate with then be recognized as a fairly better technique for reservoir management.

Boukadi, F.; Bemani, A.

1995-10-01

257

Manipulation of the ultimate pattern of polypyrrole film on self-assembled monolayer patterned substrate by negative or positive electrodeposition  

NASA Astrophysics Data System (ADS)

Micro printed self-assembled monolayer may lead to different ultimate patterns of polypyrrole (PPy) by way of positive or negative deposition in guiding the electrodeposition of pyrrole. This article gives a detailed investigation of the effects of experimental conditions on the ultimate patterns of the PPy films on self-assembled monolayer (SAM)-patterned silicon and gold substrates. The effects of the substrate surface electric properties and the nature of the solvent and supporting electrolyte on the selective deposition and the PPy film morphology are also discussed. As the results, negative deposition occurs on the octadecyltrichlorosilane (OTS)-covered area of semiconductor Si surface in non-aqueous acetonitrile solution and results in positive patterns, while positive deposition occurs in aqueous solution and gives birth to negative patterns. This is attributed to the accessibility of the monomer solution to the substrate surface. The electrodeposition preferentially occurs on the exposed area of a gold substrate, though the deposition on the octadecanthiol (ODT)-covered area is unavoidable due to the hydrophobic-hydrophobic interaction. The lypophilic properties of the deposited PPy can be modified by selecting different salts as the supporting electrolytes and doping different anions during the electrodeposition. Subsequently, the morphology of the electro-deposited PPy layer can be tailored making use of the interaction between the PPy oligomer and the surfaces of different chemical functionalities.

Zhou, Feng; Liu, Zhilu; Yu, Bo; Chen, Miao; Hao, Jingcheng; Liu, Weimin; Xue, Qunji

2004-07-01

258

CRCHD Principal Investigator: Campbell, Janis, Ph.D.  

Cancer.gov

CRCHD Principal Investigator: Campbell, Janis, Ph.D.  Back to CRCHD Ongoing Research CNP Project Listing Janis Campbell, Ph.D. CNP Project Listing CNP Pilot Projects Project Investigator Biography Campbell, Janis, Ph.D. University of

259

CRCHD Principal Investigator: Paula A. Espinoza, Ph.D.  

Cancer.gov

CRCHD Principal Investigator: Paula A. Espinoza, Ph.D.  Back to CRCHD Ongoing Research CNP Project Listing Paula A. Espinoza, Ph.D. CNP Project Listing CNP Pilot Projects Project Investigator Biography Paula A. Espinoza, Ph.D. University

260

M.S. and Ph.D. in Environmental  

E-print Network

, Ph.D. Marine Biotechnology Richard Johnson, Ph.D. Contaminant Hydrology Joseph Needoba, Ph.D. Marine. The EOS track is focused on multidisciplinary approachs to understanding marine systems. M.S. students can

Chapman, Michael S.

261

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

E-print Network

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

Greenaway, Alan

262

Comparison of functional and sensory attributes of high pH values in Semimembranosus and Longissimus dorsi of bull muscles during aging.  

PubMed

Functional and sensory attributes were evaluated during aging for 96 h of high ultimate pH (pH > 6.2) Semimembranosus (Sm) from bulls. To investigate if type of muscle has an influence on these factors from dark, firm and dry (DFD) meat, the Sm muscle was compared with the Longissimus dorsi (Ld) muscle. Significant changes in pH and water holding capacity (WHC), dominant wavelength, lightness and viscosity were found between these muscles. The remaining functional and sensory properties between these muscles did not change significantly during storage. Bull's Sm muscle had lower pH (after 24, 48 and 72 h), WHC (after 24 and 48 h) and viscosity (after 24, 48, 72 and 96 h). However, the Sm muscles had higher cooking losses, less intensive flavour, less juiciness, tenderness and firmness. PMID:9829268

Lesiów, T; Ockerman, H W

1998-10-01

263

PhET Teacher Activities: Hooke's Law  

NSDL National Science Digital Library

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.

Mullins, Jessica

264

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

PubMed Central

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

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

265

PhET Simulation: Projectile Motion  

NSDL National Science Digital Library

In this simulation, students can fire various objects out of a cannon, including a golf ball, football, pumpkin, human being, a piano, and a car. By manipulating angle, initial speed, mass, and air resistance, concepts of projectile motion come to light in a fun and game-like environment. Can you set the initial conditions so that you hit the target? This item is part of a larger collection of interactive simulations developed by the Physics Education Technology project (PhET), all freely available from the PhET web site for incorporation into classes.

2006-04-07

266

PhEt - Physics Education Technology  

NSDL National Science Digital Library

PhEt is a free website of over sixty interactive simulations that provides opportunities for students to learn physics and chemistry through exploration and virtual labs. A browsable teacher-contributed collection of homework assignments, lectures, activities, and concept questions is available. Additional contributions designed to be used in conjunction with the PhET simulations may be submitted. Simulations can be run in three different ways: on line, by downloading one or more simulations at a time, or by a download of the entire website to your computer. Many simulations have been translated into different languages.

267

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.

268

Toward ultimate nanoplasmonics modeling.  

PubMed

Advances in the field of nanoplasmonics are hindered by the limited capabilities of simulation tools in dealing with realistic systems comprising regions that extend over many light wavelengths. We show that the optical response of unprecedentedly large systems can be accurately calculated by using a combination of surface integral equation (SIE) method of moments (MoM) formulation and an expansion of the electromagnetic fields in a suitable set of spatial wave functions via fast multipole methods. We start with a critical review of volume versus surface integral methods, followed by a short tutorial on the key features that render plasmons useful for sensing (field enhancement and confinement). We then use the SIE-MoM to examine the plasmonic and sensing capabilities of various systems with increasing degrees of complexity, including both individual and interacting gold nanorods and nanostars, as well as large random and periodic arrangements of ?1000 gold nanorods. We believe that the present results and methodology raise the standard of numerical electromagnetic simulations in the field of nanoplasmonics to a new level, which can be beneficial for the design of advanced nanophotonic devices and optical sensing structures. PMID:25077678

Solís, Diego M; Taboada, José M; Obelleiro, Fernando; Liz-Marzán, Luis M; García de Abajo, F Javier

2014-08-26

269

The ultimate high tide  

SciTech Connect

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.

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

1990-01-01

270

Outline PhD Research Plan D-ERDW PhD Research Plan Outline  

E-print Network

research: field work, laboratory work, modeling technique, interdisciplinary collaboration, etc. 5 WorkOutline PhD Research Plan D-ERDW PhD Research Plan ­ Outline Doctoral students compile a research plan outlining the goals, type of work and the responsibilities they have. The research plan

Gilli, Adrian

271

PhD in Management The PhD program in Management is  

E-print Network

PhD 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) Information Systems. With globalization and technological progress, supply chain management and global

Stuart, Steven J.

272

Patricia A . Grady, Ph .D ., R .N . Ph.D.: (Physiology)  

E-print Network

National Institute of Nursing Research Patricia A . Grady, Ph .D ., R .N . Director EDUCATION Ph. Research is as an investment in the future. MENTORING & WORK/LIFE BALANCE Mentoring is vital in nursing with their professional interests. We must always strive to maintain this balance, to develop both our own personal

Bandettini, Peter A.

273

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

PubMed Central

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

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

2014-01-01

274

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

PubMed

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

Meinerz, Daiane Francine; Allebrandt, Josiane; Mariano, Douglas O C; Waczuk, Emily P; Soares, Felix Antunes; Hassan, Waseem; Rocha, João Batista T

2014-01-01

275

arXiv:hep-ph/0302030v215May2003 hep-ph/0302030  

E-print Network

was that a fraction of the photons emitted by a super- nova could convert into axions in the presencearXiv:hep-ph/0302030v215May2003 hep-ph/0302030 CITA-2003-03 Super-GZK Photons from Photon facilitates the survival of super-GZK photons most efficiently with a photon-axion coupling scale M > 1011 Ge

Terning, John

276

Electron emission from PH 2 produced via fast dissociation of core-excited PH 3  

Microsoft Academic Search

We have observed resonant Auger electron emission following P 2p ? 3e (?*) excitation of PH3 and, with the help of ab initio calculations, assigned some fine structure to the emission from the P 2p core-excited PH2 fragment produced via fast dissociation.

K. Ueda; Y. Muramatsu; H. Chiba; Y. Sato; E. Shigemasa

1998-01-01

277

PH 222-3A Spring 2007PH 222 3A Spring 2007 ELECTRIC CHARGE  

E-print Network

PH 222-3A Spring 2007PH 222 3A Spring 2007 ELECTRIC CHARGE Lecture 1 Chapter 21 (Halliday/Resnick/Walker, Fundamentals of Physics 8th edition) 1 #12;Chapter 21 Electric Charge In this chapter we will introduce a new

Mirov, Sergey B.

278

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

279

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

E-print Network

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

Paris-Sud XI, Université de

280

Effect of cooling rate on eutectic cell count, grain size, microstructure, and ultimate tensile strength of hypoeutectic cast iron  

NASA Astrophysics Data System (ADS)

This article describes a series of microstructural and strength studies performed on hypoeutectic cast iron, which was sand cast using a variety of end chills (metallic, nonmetallic, water-cooled, and subzero, respectively). The effects of cooling rate on the eutectic cell count (ECC), grain size, and the ultimate tensile strength (UTS) were evaluated. Attempts were also made to explain these effects and to correlate the UTS with ECC. It was found that subzero chilled and water-cool, chilled cast iron exhibit severe undercooling compared to normal sand cast iron. It was concluded from this investigation that nucleation conditions are completely altered but growth conditions prevail as usual. Therefore, undercooling during solidification is considered to be responsible for variation in ECC, grain size, microstructure, and tensile strength.

Hemanth, J.; Rao, K. V. S.

1999-08-01

281

LarkinPowell,Ph.D. Larkin Powell  

E-print Network

LarkinPowell,Ph.D. Larkin Powell is a professor of conservation bio logy and animal ecology in the Uni versity of Nebraska­ Lincoln's School of Natural Resources (SNR) since August 2001.He teaches on projects assessing grazing management,Farm Bill conservation programs, prescribed burning and other

Farritor, Shane

282

Andrew Terranova, Ph.D. Curriculum Vitae  

E-print Network

Courses Taught Additional Courses of Interest Introductory/General Psychology Psychology of Adjustment-based Sample of Boys and Girls. Journal of Abnormal Child Psychology. #12;CV ­ Andrew Terranova, Ph.D. Page 3 Professor Department of Psychology Stephen F. Austin State University Box 13046 ­ SFA Station Nacogdoches

Li, X. Rong

283

November 2013 Wilma Koutstaal, Ph.D.  

E-print Network

insight and non-insight problem solving with brief interventions. British Journal of Psychology, 104, 97. Recipient of the 2012 William James Book award from the American Psychological Association. ] Qin, X. A-1- November 2013 Wilma Koutstaal, Ph.D. Department of Psychology University of Minnesota S247

Koutstaal, Wilma

284

Soil pH and phosphatase activity  

Microsoft Academic Search

Approximately twenty years before this study, a site that consisted of a mixed oak forest was harvested, cleared, and divided into three treatment areas consisting of approximately 20 acres each. The three areas were planted to oak (forest), grass (grassland) and corn (agricultural) respectively. The influence of pH on the rate of phosphatase activity was determined over a broad range

S. A. Herbien; J. L. Neal

1990-01-01

285

Jianlin Cheng, PhD Associate Professor  

E-print Network

Jianlin Cheng, PhD Associate Professor Computer Science Department Informatics Institute University / 4 groups #12;Group 1 · Badri Adhikari · Renzhi Cao · Chenfeng He · Jilong Li · Debswapna MWLKKFGINLLIGQSV... CCCCHHHHHCCCSSSSS... Cheng, Randall, Sweredoski, Baldi. Nucleic Acid Research, 2005 Neural

Cheng, Jianlin Jack

286

Monitoring fetal pH by telemetry  

NASA Technical Reports Server (NTRS)

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.

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

1980-01-01

287

Professions Shannon Anderson, Ph.D.  

E-print Network

230 Science Concepts (Intro Bio I) 1 Biol 240 Introductory Biology II & Lab 5 Sci 240 Science ConceptsHealth Professions at SFSU #12;Shannon Anderson, Ph.D. Instructor, Biology Department Health Assistant Nurse-Practitioner Dental Hygiene Veterinary Medicine Allied Health Careers #12;Sneak

288

CURRICULUM VITAE Birgitta Johnson, Ph.D.  

E-print Network

300.04, Cultural History of Rap (Spring 2012) --History of Music 400.01, African American Sacred Music, Ethnomusicology "`Oh, For a Thousand Tongues to Sing': Music and Worship in African American Megachurches of Los College, Atlanta, Georgia, Music Post-Ph.D. Employment (See Teaching Experience for course titles taught

Kovalev, Leonid

289

My PhD Plan Completed Work  

E-print Network

Ideas Motivation Matthew Kelly Hierarchical Biped Control 3 / 34 #12;Background My PhD Plan Completed Work Planned Work Zero Moment Point Capture Point Hybrid Zero Dynamics Other Ideas Motivation Why Work Zero Moment Point Capture Point Hybrid Zero Dynamics Other Ideas Background: Popular Ideas

Ruina, Andy L.

290

ARC Discovery (Joint PhD)  

E-print Network

and Security) (Social, Cultural and Political Change) (Social Inclusion) (Centre for Research PhD) (Cotutelle) · 2010(MQRES) 2.252009 10% · 2010 · 1.8 1.32012 www.international) (Biomolecular Frontiers) (Australian Proteome Analysis Facility) (Climate Risk) (Cognitive Science

Wang, Yan

291

Ph.D. PSYCHOLOGY Application Checklist  

E-print Network

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

Northern British Columbia, University of

292

CURRICULUM VITAE Naveen Chikthimmah, Ph.D.  

E-print Network

/550 Food Processing, (3 cr.); SP 12, SP 13 UW STOUT BIO 406/606 Food Microbiology (lab course) (3 cr.); SP of Practice in Student Engagement, Summer-Fall 2013 · More Effective Assessment by Design: What, at WhatCURRICULUM VITAE Naveen Chikthimmah, Ph.D. University of Wisconsin-Stout Department of Food

Wu, Mingshen

293

Richrd Farkas PhD Nationality: Hungarian  

E-print Network

Richárd Farkas PhD Nationality: Hungarian Date of birth: 31. Jan 1980 homepage: www extraction for the [origo] online news archive", sold to the Origo news portal, role: principal investigator Short Business News", Sponsored by the National Office for Research and Technology, role: researcher

Möbius, Bernd

294

Semantic Social Network Ph.D. thesis  

E-print Network

Semantic Social Network Analysis Ph.D. thesis Defended on the 11th of April 2011 by Guillaume, with an original contribution that leverages Social Network Analysis with Semantic Web frameworks. Social Network-based representations, (2) to conduct a social network analysis that takes advantage of the rich semantics

Boyer, Edmond

295

AUTOMNE 2013 PhD EN COMMUNICATION  

E-print Network

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

Parrott, Lael

296

RESEARCHER TRAINING 8. PhD PROGRAMMES  

E-print Network

RESEARCHER TRAINING 8. PhD PROGRAMMES 8.1 Initial phase (A) Main aspects Sub-aspects Routines Responsibility Information on research training Perspicuous and updated information on the doctoral programmes admission to the doctoral programme should be available, to be revised as the need arises.. UiO central

Johansen, Tom Henning

297

Biomedical Engineering Cynthia Bir, PhD  

E-print Network

Biomedical Engineering Cynthia Bir, PhD Professor, Department of BME Director of Research, Orthopaedic Surgery #12;What is a Biomedical E i ?Engineer? "A bioengineer is anyoneA bioengineer is anyone who calls himself one." YC Fung #12;What is Biomedical E i i ?Engineering? Biomedical engineering

Berdichevsky, Victor

298

Ph.D. Program in Machine Learning  

E-print Network

Page 1 Ph.D. Program in Machine Learning Student Handbook Revised 7/20/12 #12;Page 2 Table Machine Learning Journal Club...................................................................................................17 #12;Page 3 Introduction The field of machine learning is concerned with the question of how

299

Ph. D. in Engineering Engineering Physics Track  

E-print Network

SCH) PHYS 510/ENGR 641 Mathematical Methods for Scientists and Engineers (Fall) STAT 505 Statistics Mathematical Modeling MEEN 549 Computational Fluid Dynamics MEMT 508 Finite Element Methods * CoursesPh. D. in Engineering Engineering Physics Track Recommended Plan of Study (09/2007) Degree Codes

Selmic, Sandra

300

pH buffering by metastable mineral-fluid equilibria and evolution of carbon dioxide fugacity during burial diagenesis  

SciTech Connect

Numerous potential pH buffers including reactions among aqueous organic acid and carbonate species, and carbonate and silicate minerals are typically present during burial diagenesis. Buffering of pH in natural systems is a function of mass action, mass balance, and kinetic constraints. In most sedimentary basins, carbonate and silicate minerals are present in amounts sufficient to buffer pH, and the activities of aqueous species are consistent with metastable equilibrium among observed diagenetic minerals. These observations indicate that mass balance and kinetic constraints are relatively less important than mass action constraints measured by the buffer index, [beta], here defined. The buffer index ultimately dictates which buffer reaction controls pH under diagenetic conditions; buffer reactions with high [beta] values are favored over those with low values. Buffer indices for a number of potential diagenetic buffer reactions have been calculated by reaction path modeling. Heterogeneous equilibria among carbonate and silicate minerals and an aqueous phase have greater [beta] values than those for homogeneous reactions among aqueous carbonate and organic acid species. This implies that pH, calcite dissolution, and f[sub CO[sub 2

Hutcheon, I.; Shevalier, M. (Univ. of Calgary, Alberta (Canada)); Abercrombie, H.J. (Geological Survey of Canada, Calgary, Alberta (Canada))

1993-03-01

301

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

PubMed

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

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

2014-05-01

302

Quality attributes of major porcine muscles: A comparison with the Longissimus Lumborum.  

PubMed

Quality attributes of the longissimus lumborum (LL) were compared to the attributes of the muscles semimembranosus (SM), rectus femoris (RF), biceps femoris (BF), gluteus medius (GM) and the lateral portion of the semitendinosus (ST) in the ham, the psoas major (PM) in the loin and the supraspinatus (SS), infraspinatus (IS) and triceps brachii (TB) in the shoulder. Carcasses were allocated to quality groups based on measurements of muscle exudate and lightness (CIE-L(?)) in the LL. The SM, BF, GM and ST in the ham were similar to the LL (P > 0·05) in meat ultimate pH (pHu) and exudate and the GM, ST and LL were similar (P > 0·05) to the LL in lightness. The TB, RF, SS, PM and IS were similar (P > 0·05) in exudate, lightness and pHu and compared to the LL, were less exudative (P < 0·05) and darker (P < 0·05). When the LL was classed pale, and exudative, the GM, BF, SM and ST were also pale and exudative but the other muscles were darker and non-exudative. When the LL was classed dark and non-exudative, all other muscles were dark, non-exudative and the pHu was high. Therefore, the LL could serve as a reliable indicator of colour and exudate for all porcine musculature when the condition was dark and non-exudative (i.e. DFD). However, when the condition was pale and exudative (i.e. PSE), then the LL would serve as a reliable indicator only for the four major ham muscles, excluding the RF. PMID:22060153

Warner, R D; Kauffman, R G; Russel, R L

1993-01-01

303

Chronic effects of low ph and elevated aluminum on survival, maturation, spawning and embryo-larval development of the fathead minnow in soft water  

SciTech Connect

Fathead minnows (Pimephales promelas) were exposed to a range of pH and Al concentrations in soft water (8 mg Ca/L) to determine effect levels at various life stages. The tested pH levels ranged from 8.0 through 5.2 and inorganic monomeric Al from 15 through 60 micro g/L. Reproductive processes including spawning, embryogenesis, and early larval survival were more sensitive to acid stress than were juvenile growth and survival. Juvenile survival was significantly reduced at pH 5.2 + 60 micro g Al/L (P <0.05). Spawning success was reduced at pH 6.0 and 5.5 (P <0.10) and failed completely at pH 5.2, regardless of Al concentration. The effect of parental exposure on progeny survival was assessed by an interchange of embryos from the spawning treatment to all tested exposure conditions. When reared at pH 8.0 + 15 micro g Al/L through 6.0 + 15 micro g Al/L or at pH 5.5 + 30 micro g Al/L, parental exposure did not significantly influence progeny survival. However, survival was significantly reduced among progeny from brood fish reared at pH 5.5 + 15 micro g Al/L as compared to those spawned at pH 6.0 + 15 micro g Al/L and above, or at pH 5.5 + 30 micro g Al/L (P <0.05). Juvenile or 15-day larval growth effects were not detected under any exposure condition (P <0.05). Ultimately, fathead minnow young-of-the-year recruitment and production potential can be expected to diminish when environmental pH falls to 6.0 and to fail completely at 5.5 and lower.

McCormick, J.H.; Jensen, K.M.; Anderson, L.E.

1989-01-01

304

103K.B.H. Clancy et al. (eds.), Building Babies: Primate Development in Proximate and Ultimate Perspective, Developments in Primatology: Progress and Prospects 37,  

E-print Network

, the sensitivity and plasticity of the fetus during development toward andro- gens and other physiological cues to the concentration of andro- gens in the prenatal environment and the ultimate outcomes. Therefore, we also discuss

French, Jeffrey A.

305

PH 100-MG Summer 2008 Page 1 of 4  

E-print Network

, Physics (7th Ed.) if you plan to take Physics 201 (PH 201) · Halliday, Resnick and Walker, Physics (7th EdPH 100-MG Summer 2008 Page 1 of 4 Preparatory Physics: PH 100-MG Summer Term 2008 Class meetings.) if you plan to take Physics 221 (PH 221). Last Day to Withdraw with "W": July 7 Course Web Page: http

Camata, Renato P.

306

PhET Simulation: Gravity Force Lab  

NSDL National Science Digital Library

This interactive simulation helps the user to visualize the gravitational force that two objects exert on each other. It features two spherical objects whose masses can be changed by the user from 1-100 kg. It was designed to build understanding of how the gravitational force between two objects is affected by their masses and by the distance between them. Also included are teaching tips and lesson plans for use in high school and lower-level undergraduate physical science courses. 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 in which students learn through exploration. All of the simulations are freely available from the PhET web site for incorporation into classes.

2010-11-12

307

Highlights From PhUn Week 2007  

NSDL National Science Digital Library

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.".

2008-02-01

308

PhD job market: professional trajectories and incentives during the PhD  

Microsoft Academic Search

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

V. Mangematin

2000-01-01

309

N Ph.D SCHOOL DIRETTORE Ph.D. Programme 1.1 Prehistoric Archaeology  

E-print Network

Appendix 1 N° Ph.D SCHOOL DIRETTORE Ph.D. Programme 1.1 Prehistoric Archaeology 1.2 Oriental Archaeology 1.3 Classical Archaeology 1.4 Etruscology 1.5 Ancient Topography 1.6 Archaeology and post classic and Finance 5.2 Political Economy 5.3 Methods and Models for Economics and Finance 6.1 Public Law 6.2 Economic

Di Pillo, Gianni

310

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.

311

PhET Simulation: Balloons & Buoyancy  

NSDL National Science Digital Library

This applet experiments with a helium balloon, a hot air balloon, or a rigid sphere filled with different gases. The user can discover what makes some balloons float and others sink. Teaching ideas and activities are included. The direct link to the simulation is given as a mirror URL. This is part of a larger collection developed by the Physics Education Technology project (PhET).

2008-07-15

312

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.

313

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).

314

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.

315

Highlights From PhUn Week 2009  

NSDL National Science Digital Library

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."

2010-04-01

316

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.

317

Not Your Father's Ph.D.  

ERIC Educational Resources Information Center

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…

Withrow, Brandon G.

2008-01-01

318

Nanometer optical fiber pH sensor  

Microsoft Academic Search

A thousandfold miniaturization of immobilized optical fiber sensors has been achieved by a near-field optical technique. This technology is based on nanofabricated optical fiber tips and near-field photoinitiated polymerization. Submicrometer pH sensors have been prepared by attaching a copolymer covalently to a silanized fiber tip surface. The sensors have demonstrated their high spatial resolving ability, excellent detection limit (zeptomoles), very

Raoul Kopelman; Weihong Tan; Zhong-You Shi

1993-01-01

319

Ultimate detectability of volatile organic compounds: how much further can we reduce their ambient air sample volumes for analysis?  

PubMed

To understand the ultimately lowest detection range of volatile organic compounds (VOCs) in air, application of a high sensitivity analytical system was investigated by coupling thermal desorption (TD) technique with gas chromatography (GC) and time-of-flight (TOF) mass spectrometry (MS). The performance of the TD-GC/TOF MS system was evaluated using liquid standards of 19 target VOCs prepared in the range of 35 pg to 2.79 ng per ?L. Studies were carried out using both total ion chromatogram (TIC) and extracted ion chromatogram (EIC) mode. EIC mode was used for calibration to reduce background and to improve signal-to-noise. The detectability of 19 target VOCs, if assessed in terms of method detection limit (MDL, per US EPA definition) and limit of detection (LOD), averaged 5.90 pg and 0.122 pg, respectively, with the mean coefficient of correlation (R(2)) of 0.9975. The minimum quantifiable mass of target analytes, when determined using real air samples by the TD-GC/TOF MS, is highly comparable to the detection limits determined experimentally by standard. In fact, volumes for the actual detection of the major aromatic VOCs like benzene, toluene, and xylene (BTX) in ambient air samples were as low as 1.0 mL in the 0.11-2.25 ppb range. It was thus possible to demonstrate that most target compounds including those in low abundance could be reliably quantified at concentrations down to 0.1 ppb at sample volumes of less than 10 mL. The unique sensitivity of this advanced analytical system can ultimately lead to a shift in field sampling strategy with smaller air sample volumes facilitating faster, simpler air sampling (e.g., use of gas syringes rather than the relative complexity of pumps or bags/canisters), with greatly reduced risk of analyte breakthrough and minimal interference, e.g., from atmospheric humidity. The improved detection limits offered by this system can also enhance accuracy and measurement precision. PMID:22934885

Kim, Yong-Hyun; Kim, Ki-Hyun

2012-10-01

320

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

SciTech Connect

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)

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

2006-07-01

321

Assessing brain plasticity across the lifespan with transcranial magnetic stimulation: why, how, and what is the ultimate goal?  

PubMed Central

Sustaining brain and cognitive function across the lifespan must be one of the main biomedical goals of the twenty-first century. We need to aim to prevent neuropsychiatric diseases and, thus, to identify and remediate brain and cognitive dysfunction before clinical symptoms manifest and disability develops. The brain undergoes a complex array of changes from developmental years into old age, putatively the underpinnings of changes in cognition and behavior throughout life. A functionally “normal” brain is a changing brain, a brain whose capacity and mechanisms of change are shifting appropriately from one time-point to another in a given individual's life. Therefore, assessing the mechanisms of brain plasticity across the lifespan is critical to gain insight into an individual's brain health. Indexing brain plasticity in humans is possible with transcranial magnetic stimulation (TMS), which, in combination with neuroimaging, provides a powerful tool for exploring local cortical and brain network plasticity. Here, we review investigations to date, summarize findings, and discuss some of the challenges that need to be solved to enhance the use of TMS measures of brain plasticity across all ages. Ultimately, TMS measures of plasticity can become the foundation for a brain health index (BHI) to enable objective correlates of an individual's brain health over time, assessment across diseases and disorders, and reliable evaluation of indicators of efficacy of future preventive and therapeutic interventions. PMID:23565072

Freitas, Catarina; Farzan, Faranak; Pascual-Leone, Alvaro

2013-01-01

322

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

PubMed Central

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

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

2014-01-01

323

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

NASA Technical Reports Server (NTRS)

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.

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

1987-01-01

324

Evidence for an acetoxyarylamine as the ultimate mutagenic reactive intermediate of the carcinogenic aromatic amine 2,4-diaminotoluene.  

PubMed

2,4-Diaminotoluene (2,4-DAT) is a mutagenic and hepatocarcinogenic aromatic amine, requiring metabolic activation. We have found that the mutagenic potency of 2,4-DAT in Salmonella TA98 is similar when activated by either Aroclor-1254-induced rat primary hepatocytes or 9000 x g supernatant. Previous work has demonstrated that 2,4-DAT is activated by cytochrome P450. The present report describes an investigation of the role of acetyltransferase in 2,4-DAT activation. Substitution of TA98 with the acetyltransferase-deficient strain TA98/1,8-DNP6 resulted in an approximately 90% decrease in the mutagenic potency for 2,4-DAT using S9 activation. The newly engineered acetyltransferase-enhanced Salmonella tester strain YG1024 (TA98(pYG219] demonstrated greatly enhanced sensitivity to the mutagenicity of 2,4-DAT. Inhibition of O-acetyltransferase activity, either with the selective acetyltransferase inhibitor thiolactomycin, or by competitive inhibition with an alternative substrate for the enzyme, reduced the mutagenicity of 2,4-DAT in this acetyltransferase-enhanced bacterial strain. From these data we conclude that following 2,4-DAT activation by N-hydroxylation by cytochrome P450, the resulting hydroxylamino intermediate is further activated in the bacteria via O-acetylation to form the ultimate reactive intermediate, which is postulated to be 4-acetoxyamino-2-aminotoluene. PMID:2233826

Cunningham, M L; Matthews, H B

1990-10-01

325

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

PubMed

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

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

2014-01-01

326

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

USGS Publications Warehouse

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.

Cook, Troy A.

2013-01-01

327

Imaging-genetics in dyslexia: connecting risk genetic variants to brain neuroimaging and ultimately to reading impairments.  

PubMed

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

Eicher, John D; Gruen, Jeffrey R

2013-11-01

328

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

PubMed Central

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

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

2014-01-01

329

Online Tracking Parameter Adaptation based on Evaluation Duc Phu Chau Julien Badie Francois Bremond  

E-print Network

, a genetic algorithm is used to search for the best parameter values. This approach does not require hu- man], the authors propose a tracking algorithm whose pa- rameters can be learned offline for each tracking context for many tracking algorithms. In order to solve this problem, this paper pro- poses an online parameter

Paris-Sud XI, Université de

330

PhET Simulation: Battery Voltage  

NSDL National Science Digital Library

This page contains a simple Java applet that gives users a look inside a battery to see how it works. It features a cross-sectional battery filled with blue spheres representing charges. As users change the voltage, little stick figures move the blue charges from one end of the battery to the other. A voltmeter displays the resulting battery voltage. Students must determine which side of the battery is positive or negative from the information at hand. This item is part of a larger collection of materials developed and maintained by the Physics Education Technology project (PhET) based on principles of physics education research.

2008-11-19

331

PH phenomena in relation to stomatal opening  

Microsoft Academic Search

Summary The following figures are the main pH optima for stomatal opening found for the various species in the three main buffer solutions used, in the ordercitrate, acetate, phosphate.1.Coffea arabica — 5.6, 5.7, 6.6.2.Kniphofia sp. — 5.6, 5.9, 6.0 (also 4.8 for citrate, 4.5 for acetate).3.Vicia faba leaf — 5.1, 5.0, 7.9 (also 3.3 for citrate and 6.2 for acetate).4.Narcissus

J. Small; K. M. Maxwell

1939-01-01

332

PhET Simulation: The Moving Man  

NSDL National Science Digital Library

This interactive lets learners explore the differences in graphs of position, velocity, and acceleration. Set initial conditions and view the graphs simultaneously as the "Moving Man" changes position. You can also program the motion by entering an equation for the position as a function of time. The resource provides sample learning goals as well as user-submitted lesson plans and activities for student groups ranging from the middle grades through high school. This page is part of the PhET collection of free simulations for science education, many of which have been classroom tested.

2006-01-18

333

pH buffering by metastable mineral-fluid equilibria and evolution of carbon dioxide fugacity during burial diagenesis  

NASA Astrophysics Data System (ADS)

Numerous potential pH buffers including reactions among aqueous organic acid and carbonate species carbonate and silicate minerals are typically present during burial diagenesis. Buffering of pH in natural systems is a function of mass action, mass balance kinetic constraints. In most sedimentary basins, carbonate and silicate minerals are present in amounts sufficient to buffer pH the activities of aqueous species are consistent with metastable equilibrium among observed diagenetic minerals. These observations indicate that mass balance and kinetic constraints are relatively less important than mass action constraints measured by the buffer index, ?, here defined as follows: ? = -d?/dpH The buffer index ultimately dictates which buffer reaction controls pH under diagenetic conditions; buffer reactions with high ? values are favoured over those with low values. Buffer indices for a number of potential diagenetic buffer reactions have been calculated by reaction path modeling. Heterogeneous equilibria among carbonate and silicate minerals and an aqueous phase have greater ? values than those for homogeneous reactions among aqueous carbonate and organic acid species. This implies that pH, calcite dissolution ƒ CO2 are strongly dependent on carbonate-silicate-fluid interactions during diagenesis. The role of carbonate-silicate reactions in controlling pH is tested by examining the evolution of CO 2 fugacities with temperature during burial diagenesis. Carbon dioxide fugacities have been calculated by reaction path modeling of diagenetic carbonate-silicate equilibria for sedimentary and geothermal systems. Calculated CO 2 fugacities are in general agreement with observed CO 2 fugacities. The combination of high buffer index, apparent metastable equilibrium between diagenetic minerals and waters the relatively accurate prediction of z. hfl; CO2 trends with temperature suggest that carbonate-silicate reactions are important in determining the evolution of fluid compositions in sedimentary basins and influence the course of dissolution events in burial diagenesis.

Hutcheon, Ian; Shevalier, Maurice; Abercrombie, Hugh J.

1993-03-01

334

21 CFR 876.1400 - Stomach pH electrode.  

Code of Federal Regulations, 2010 CFR

...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...

2010-04-01

335

21 CFR 876.1400 - Stomach pH electrode.  

Code of Federal Regulations, 2012 CFR

...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...

2012-04-01

336

21 CFR 876.1400 - Stomach pH electrode.  

...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...

2014-04-01

337

21 CFR 876.1400 - Stomach pH electrode.  

Code of Federal Regulations, 2011 CFR

...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...

2011-04-01

338

21 CFR 876.1400 - Stomach pH electrode.  

Code of Federal Regulations, 2013 CFR

...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...

2013-04-01

339

CRCHD - CRCHD Research - Principal Investigator: Susan Kane, Ph.D.  

Cancer.gov

CRCHD - CRCHD Research - Principal Investigator: Susan Kane, Ph.D. Home Health Disparities Research CRCHD Research Ongoing Research PACHE PACHE Partnership Listing Susan Kane, Ph.D. CRCHD Research Ongoing Research

340

CRCHD - CRCHD Research - Principal Investigator: Susan Kane, Ph.D.  

Cancer.gov

CRCHD - CRCHD Research - Principal Investigator: Susan Kane, Ph.D. Home Disparities Research Programs CRCHD Ongoing Research PACHE PACHE Partnership Listing Susan Kane, Ph.D. CRCHD Research Ongoing Research

341

PhD Student Handbook Department of Computing  

E-print Network

PhD Student Handbook 2012­2013 Department of Computing Imperial College London Last updated milestones 7 Deadlines for Part-time PhD students . . . . . . . . . . . . . . . . . . . . . . . . . 8: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 As a student you can expect your supervisor to: . . . . . . . . . . . . . . . . . . . . 14

Cadar, Cristian

342

CRCHD - CRCHD Research - Principal Investigator: Jamil Momand, Ph.D.  

Cancer.gov

CRCHD - CRCHD Research - Principal Investigator: Jamil Momand, Ph.D. Home Health Disparities Research CRCHD Research Ongoing Research PACHE PACHE Partnership Listing Jamil Momand, Ph.D. CRCHD Research Ongoing

343

CRCHD - CRCHD Research - Principal Investigator: Jamil Momand, Ph.D.  

Cancer.gov

CRCHD - CRCHD Research - Principal Investigator: Jamil Momand, Ph.D. Home Disparities Research Programs CRCHD Ongoing Research PACHE PACHE Partnership Listing Jamil Momand, Ph.D. CRCHD Research Ongoing Research

344

Nanomechanical DNA Origami pH Sensors.  

PubMed

Single-molecule pH sensors have been developed by utilizing molecular imaging of pH-responsive shape transition of nanomechanical DNA origami devices with atomic force microscopy (AFM). Short DNA fragments that can form i-motifs were introduced to nanomechanical DNA origami devices with pliers-like shape (DNA Origami Pliers), which consist of two levers of 170-nm long and 20-nm wide connected at a Holliday-junction fulcrum. DNA Origami Pliers can be observed as in three distinct forms; cross, antiparallel and parallel forms, and cross form is the dominant species when no additional interaction is introduced to DNA Origami Pliers. Introduction of nine pairs of 12-mer sequence (5'-AACCCCAACCCC-3'), which dimerize into i-motif quadruplexes upon protonation of cytosine, drives transition of DNA Origami Pliers from open cross form into closed parallel form under acidic conditions. Such pH-dependent transition was clearly imaged on mica in molecular resolution by AFM, showing potential application of the system to single-molecular pH sensors. PMID:25325338

Kuzuya, Akinori; Watanabe, Ryosuke; Yamanaka, Yusei; Tamaki, Takuya; Kaino, Masafumi; Ohya, Yuichi

2014-01-01

345

Organelle pH in the Arabidopsis endomembrane system.  

PubMed

The pH of intracellular compartments is essential for the viability of cells. Despite its relevance, little is known about the pH of these compartments. To measure pH in vivo, we have first generated two pH sensors by combining the improved-solubility feature of solubility-modified green fluorescent protein (GFP) (smGFP) with the pH-sensing capability of the pHluorins and codon optimized for expression in Arabidopsis. PEpHluorin (plant-solubility-modified ecliptic pHluorin) gradually loses fluorescence as pH is lowered with fluorescence vanishing at pH 6.2 and PRpHluorin (plant-solubility-modified ratiomatric pHluorin), a dual-excitation sensor, allowing for precise measurements. Compartment-specific sensors were generated by further fusing specific sorting signals to PEpHluorin and PRpHluorin. Our results show that the pH of cytosol and nucleus is similar (pH 7.3 and 7.2), while peroxisomes, mitochondrial matrix, and plastidial stroma have alkaline pH. Compartments of the secretory pathway reveal a gradual acidification, spanning from pH 7.1 in the endoplasmic reticulum (ER) to pH 5.2 in the vacuole. Surprisingly, pH in the trans-Golgi network (TGN) and multivesicular body (MVB) is, with pH 6.3 and 6.2, quite similar. The inhibition of vacuolar-type H(+)-ATPase (V-ATPase) with concanamycin A (ConcA) caused drastic increase in pH in TGN and vacuole. Overall, the PEpHluorin and PRpHluorin are excellent pH sensors for visualization and quantification of pH in vivo, respectively. PMID:23702593

Shen, Jinbo; Zeng, Yonglun; Zhuang, Xiaohong; Sun, Lei; Yao, Xiaoqiang; Pimpl, Peter; Jiang, Liwen

2013-09-01

346

pH and drug resistance in tumors  

Microsoft Academic Search

Uptake of weakly ionizing drugs by tumours is greatly influenced by the interstitial and intracellular pH, and the ionization properties of the drug. Extracellular pH in tumors is acidic, while the intracellular pH is in the neutral-to-alkaline range. Tumors of the bladder, kidney and gastrointestinal system in particular are exposed to extremes of pH. Strategies for exhancing and exploiting acid-outside

Natarajan Raghunand; Robert J Gillies

2000-01-01

347

AG Cellular Biophysics and Translational Cardiology 1 PhD student1 PhD student1 PhD student1 PhD student----StructureStructureStructureStructure----functionfunctionfunctionfunction  

E-print Network

AG Cellular Biophysics and Translational Cardiology is seeking 1 PhD student1 PhD student1 Ph research in the field of translational cardiology. Background:Background:Background:Background: changes and Translational Cardiology, Dept. of Cardiology and Pneumonology, D-37099 Göttingen Tel.: +49 (0)551/39-10574 Fax

Gollisch, Tim

348

________________________________________________________________________The MIND Institute__________________ Stephen C. Noctor, Ph.D.  

E-print Network

__________________ 1 Stephen C. Noctor, Ph.D. Noctor, Stephen C., Ph.D., Assistant Professor, Department of Psychiatry and Behavioral Sciences, School of Medicine. Education B.A., Psychology, Rutgers University, 1991 Ph.D factors regulate proliferation. He also studies how cortical cells migrate over long distances

Nguyen, Danh

349

Zugang Liu, Ph.D. Department of Business  

E-print Network

Zugang Liu, Ph.D. Department of Business and Economics Pennsylvania State University Hazleton, PA, 08071 Trisha D. Anderson, Ph.D. School of Business Administration Texas Wesleyan University Fort Worth, TX, 76105 Jose M. Cruz, Ph.D. Department of Operations and Information Management School of Business

Nagurney, Anna

350

Ris-PhD-Report Wind Turbines: Unsteady Aerodynamics and  

E-print Network

Risø-PhD-Report Wind Turbines: Unsteady Aerodynamics and Inflow Noise Brian Riget Broe Risø-PhD-47 Title: Wind Turbines: Unsteady Aerodynamics and Inflow Noise Division: Wind Energy Division Risø-PhD-47(EN) December 2009 Abstract (max. 2000 char.): Aerodynamical noise from wind turbines due

351

Speech and Language Sciences PhDandMScResearchProgrammes  

E-print Network

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

Hickman, Mark

352

Emily N. Taylor, Ph.D. Department of Biological Sciences  

E-print Network

Emily N. Taylor, Ph.D University 2000 Graduate Research Fellowship, National Science Foundation #12;Emily N. Taylor, Ph.D://www.calpoly.edu/~bio/PERL EDUCATION Ph.D. (Biology) 2005 Arizona State University Dissertation: Proximate determinants of sexual size

Taylor, Emily

353

CURRICULUM VITAE KATHERINE J. AUCOIN, PH.D.  

E-print Network

ages 0-17, as well as administering parent-child interaction assessment to determine diagnostic statusCURRICULUM VITAE KATHERINE J. AUCOIN, PH.D. Jefferson Parish Human Services Authority Child Influence of Peers on Children's Emotion Regulation" o Committee: Joy D. Osofsky, Ph.D., Timothy Stickle, Ph

Li, X. Rong

354

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

E-print Network

#12;#12;#12;Existing Facility (Ph I) Includes Water intake, screens, and pumps sufficient for proposed Ph II #12;Existing Facility (Ph I) Includes Ozone water treatment and settling pond sufficient Spring Chinook Returns #12; $1.2M Existing broodstock collection incorporated into Nursery Bridge ladder

355

M.S. and Ph.D. in Biochemistry and  

E-print Network

Blackburn, Ph.D. Metalloenzymes Margo Haygood, Ph.D. Marine Biotechnology Pierre Moënne-Loccoz, Ph.S. Degree The M.S. in BMB prepares students for careers in biotechnology or health sci- ence monitoring on multidisciplinary approachs to understanding marine systems. M.S. students can choose thesis or nonthesis options

Chapman, Michael S.

356

Transition to Transformation Kailash Nath Pyakuryal, Ph.D.  

E-print Network

#12;Nepal : Transition to Transformation Editors: Kailash Nath Pyakuryal, Ph.D. Bishnu Raj Upreti, Ph.D. Sagar Raj Sharma, Ph.D. #12;Copyright © 2008 by individual authors for the respective chapters, copied or stored in a retrieval system, transmitted or utilised in any means- electronic, mechanical

Richner, Heinz

357

Curriculum Vitae Jae-Hyeon Parq, Ph.D.  

E-print Network

Curriculum Vitae Jae-Hyeon Parq, Ph.D. Postdoctoral Researcher Contact: School of Earth University, Aug. 2003 Ph.D., Physics, Seoul National University (Ph.D. + M.S. united course), Aug. 2011, Myung Joon Han, and Jaejun Yu, "LDA+U Study of Electronic and Magnetic Structure of Fe Atoms

358

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.

359

Writing your own activities - PhET Activity Guidelines  

NSDL National Science Digital Library

You can create your own lectures, homework, and labs around any PhET simulation by using the PhET Activity Guidelines . These guidelines will help you create "guided inquiry activities which encourage students to construct their own understanding," which are the most effective way to use PhET simulations.

Mckagan, Sam

360

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

NASA Astrophysics Data System (ADS)

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.

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

2013-12-01

361

Nader G. Abraham, Ph.D., DR.H.C. Professor and Chair  

E-print Network

Nader G. Abraham, Ph.D., DR.H.C. Professor and Chair Karen Edwards Department Manager Faculty Nader Abraham, Ph.D. Amir Askari, Ph.D. Andrew Beavis, Ph.D. Paul Brand, Ph.D. Tamara Castaneda, Ph.D. Joana, Ph.D. Nikolai Modyanov, Ph.D. Sonia Najjar, Ph.D. Sandrine Pierre, Ph.D. Phillip T. Robinson, D

Brand, Paul H.

362

Comparison of Rumen Fluid pH by Continuous Telemetry System and Bench pH Meter in Sheep with Different Ranges of Ruminal pH  

PubMed Central

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

Reis, Leonardo F.; Minervino, Antonio H. H.; Araujo, Carolina A. S. C.; Sousa, Rejane S.; Oliveira, Francisco L. C.; Rodrigues, Frederico A. M. L.; Meira-Junior, Enoch B. S.; Barreto-Junior, Raimundo A.; Mori, Clara S.; Ortolani, Enrico L.

2014-01-01

363

Natalie Sachs-Ericsson, Ph.D. Natalie J. Sachs-Ericsson, Ph.D.  

E-print Network

older adults. American Journal of Geriatric Psychiatry. 3. *Medley, A., Sachs-Ericsson, N. (In Press: Department of Psychology The Florida State University 1107 West Call St. Tallahassee, FL 32306-4301 850 644-4576 sachs@psy.fsu.edu Education: Degree Area Southern Illinois University Ph.D. Clinical Psychology 1985 New

Hull, Elaine

364

Plastic pH electrodes for the measurement of gastrointestinal pH.  

PubMed Central

Plastic electrodes have been developed for measuring pH in the human gastrointestinal tract. The electrodes have a plastic hydrogen ion sensitive membrane sealed to a length of fluid filled PVC tubing. Two recently developed hydrogen ion sensitive ligands have been examined. Their operational characteristics have been described. These electrodes have an electrical response of 52 to 58 mV/pH unit change in the range pH 4-9, with a diminished response outwith this range. They have a low resistance value and a fast response time of one second to reach 90% of their maximum response. The electrodes can be passed down the biopsy channel of an endoscope to obtain mucosal pH readings under direct vision. Readings obtained in this way using plastic electrodes are comparable to those obtained with glass electrodes. Alternatively, these electrodes can be joined to a Crosby capsule, allowing continuous recording of mucosal pH through to the jejunum during jejunal biopsy procedures. These electrodes can be used repeatedly or may be acceptable as inexpensive disposable items for sterile clinical use. Images Fig. 1 PMID:3967838

Rawlings, J M; Lucas, M L

1985-01-01

365

To PhET or Not To PhET: That Is the Question  

Microsoft Academic Search

The investigation examined use of a Physics Education Technology (PhET) simulation versus a hands-on lab activity on student's conceptual understanding of physics content. Topics of study included vectors, projectile motion, direct current (DC) circuits, and the photoelectric effect. Participants consisted of high school juniors and seniors enrolled in a physics course. Assessment instruments consisted of questions taken from the Vector

Robert Casao

2008-01-01

366

Chicken meat quality: genetic variability and relationship with growth and muscle characteristics  

PubMed Central

Background The qualitative properties of the meat are of major importance for poultry breeding, since meat is now widely consumed as cuts or as processed products. The aim of this study was to evaluate the genetic parameters of several breast meat quality traits and their genetic relationships with muscle characteristics in a heavy commercial line of broilers. Results Significant levels of heritability (averaging 0.3) were obtained for breast meat quality traits such as pH at 15 min post-slaughter, ultimate pH (pHu), color assessed by lightness L*, redness a* and yellowness b*, drip loss, thawing-cooking loss and shear-force. The rate of decrease in pH early post-mortem and the final pH of the meat were shown to be key factors of chicken meat quality. In particular, a decrease in the final pH led to paler, more exudative and tougher breast meat. The level of glycogen stored in breast muscle estimated by the Glycolytic Potential (GP) at slaughter time was shown to be highly heritable (h2 0.43). There was a very strong negative genetic correlation (rg) with ultimate meat pH (rg -0.97), suggesting a common genetic control for GP and pHu. While breast muscle weight was genetically positively correlated with fiber size (rg 0.76), it was negatively correlated with the level of glycogen stored in the muscle (rg -0.58), and as a consequence it was positively correlated with the final pH of the meat (rg 0.84). Conclusion This genetic study confirmed that selection should be useful to improve meat characteristics of meat-type chickens without impairing profitability because no genetic conflict was detected between meat quality and meat quantity. Moreover, the results suggested relevant selection criteria such as ultimate pH, which is strongly related to color, water-holding capacity and texture of the meat in this heavy chicken line. PMID:18706119

Le Bihan-Duval, Elisabeth; Debut, Martine; Berri, Cecile M; Sellier, Nadine; Sante-Lhoutellier, Veronique; Jego, Yves; Beaumont, Catherine

2008-01-01

367

Bridging the Reef gaps: first evidence for corals surviving under low pH conditions  

NASA Astrophysics Data System (ADS)

Following two major extinction events, the late Permian and Triassic/Jurassic, there is a long absence of corals from the geological record followed by a recurrence coral fossils. This unusual disappearance and reappearance, referred to commonly as 'reef gaps', was explained as a failure in sampling effort, and/or the movement of these species into geographic 'refugia' that have not been found. Because the phylogeny of recent corals suggests their origin in the pre-Permian-extinction , an alternative explanation for reef gaps hypothesized that corals have a means of alternating between soft bodies and fossilizing forms. This study supports this hypothesis. Thirty coral fragments from 5 coral colonies of the scleractinian Mediterranean corals Oculina patagonica (encrusting) and Madracis pharencis (bulbous) were subjected to pH 7.4-7.6 (in accordance with the pH projected by the IPCC for the year 2300) and 30 fragments to pH 8.0-8.3 (ambient) over a period of 12 months. 100% of the colonies in the experiment and 90% of all polyps survived to the end the experiment. The corals grown in acidified conditions, where skeleton-building conditions were absent, maintained basic life functions as a solitary skeleton-less ecophenotype resembling a sea anemone. On an evolutionary scale, these results provide a possible explanation to coral survival over major extinction events such as the Permian/Triassic and Triassic/Jurassic events. It is important to note that these results only demonstrate that corals can persist as soft bodied ecophoenotypes, but the loss of reef framework has major ramifications to the entire structure and function of coral reef ecosystems, ultimately impacting the services they provide to human society.

Tchernov, D.; Fine, M.

2007-12-01

368

08/2011 108/2011 1 PhD Minor in Epidemiology PhD Minor in Epidemiology  

E-print Network

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

Arizona, University of

369

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

E-print Network

Roadmap: Public Health ­ Pre-Medicine ­Bachelor of Science in Public Health [PH-BSPH-PH-PMD] College of Public Health Catalog Year: 2012­2013 Page 1 of 2 | Last Updated: 11-Jun-12/LNHD This roadmap I Laboratory 1 PH 10001 Introduction to Public Health 3 US 10097 Destination Kent State: First

Sheridan, Scott

370

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

E-print Network

Roadmap: Public Health ­ Pre-Medicine ­Bachelor of Science in Public Health [PH-BSPH-PH-PMD] College of Public Health Catalog Year: 2013-2014 Page 1 of 3 | Last Updated: 24-Apr-13/LNHD This roadmap Fulfills Kent Core Additional PH 10001 Introduction to Public Health 3 US 10097 Destination Kent State

Sheridan, Scott

371

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.

372

Ian Douglass Coulter, PhD  

PubMed Central

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

Brown, Douglas M

2004-01-01

373

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

NASA Astrophysics Data System (ADS)

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.

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

2010-12-01

374

ULTimateCO2 : A FP7 European Project dedicated to the understanding of the long term fate of geologically stored CO2  

E-print Network

ULTimateCO2 : A FP7 European Project dedicated to the understanding of the long term fate of geologically stored CO2 Audigane, P.1 , Brown, S.2 , Dimier A.3 , Frykman P.4 , Gherardi F.5 , Le Gallo Y.6 Recherches Géologiques et minières - France 2 CO2SENSE limited, United Kingdom 3 EIFER, EIFER europaisches

Paris-Sud XI, Université de

375

or rain, affect pollen viability and ultimate pollinationUSE OF DIGITAL IMAGE ANALYSIS, of their crops. Therefore simple, inexpensive techniques  

E-print Network

of pollen before crosses are undertaken, or while field pollination is occurring, areGERMINATION ASSAYSNOTES or rain, affect pollen viability and ultimate pollinationUSE OF DIGITAL IMAGE ANALYSIS on the component of the pollen grain assayed. Assuming no Wendy A. Pline, Keith L. Edmisten, Tim Oliver

Kalisz, Susan

376

ASSESSING AND FORECASTING, BY PLAY, NATURAL GAS ULTIMATE RECOVERY GROWTH AND QUANTIFYING THE ROLE OF TECHNOLOGY ADVANCEMENTS IN THE TEXAS GULF COAST BASIN AND EAST TEXAS  

Microsoft Academic Search

A detailed natural gas ultimate recovery growth (URG) analysis of the Texas Gulf Coast Basin and East Texas has been undertaken. The key to such analysis was determined to be the disaggregation of the resource base to the play level. A play is defined as a conceptual geologic unit having one or more reservoirs that can be genetically related on

William L. Fisher; Eugene M. Kim

2000-01-01

377

The launch of the first Sputnik on Ortoher 4, 1967,gener-ated a shock wave which ultimately led toa revolution in the  

E-print Network

The launch of the first Sputnik on Ortoher 4, 1967,gener- ated a shock wave which ultimately led integratesappropriate principles with the descriptivematerial,and (5) To initiatean ongoing effortto promote the role". .. chemistry is an experimental science in which descriptive material D ~ V San essential role. It was argued

Bodner, George M.

378

Intramural 7v7 Ultimate Frisbee League **Please refer to the Captain's Manual for a complete list of all Intramural Sport guidelines & procedures**  

E-print Network

. Game time is forfeit time! C. No jewelry can be worn during games. Captains are responsible for makingIntramural 7v7 Ultimate Frisbee League **Please refer to the Captain's Manual for a complete list of all Intramural Sport guidelines & procedures** A. General IM Procedures A. Teams should arrive 15

Almor, Amit

379

Multimodal optical imaging of mouse Ischemic cortex Phillip B Jones PhDa, Hwa Kyoung Shinb, PhD, Andrew K Dunn, PhDa, Bradley T Hyman,  

E-print Network

Multimodal optical imaging of mouse Ischemic cortex Phillip B Jones PhDa, Hwa Kyoung Shinb, PhMassGeneral Institute for Neurodegenerative disorders, dStroke Service and Neuroscience Intensive Care Unit, Department the acute phase were captured with high temporal and spatial resolution through the intact skull

380

In vitro synthesis and purification of PhIP-deoxyguanosine and PhIP-DNA oligomer covalent complexes  

SciTech Connect

2-Amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP) is a heterocyclic amine compound formed when meats are cooked at high temperatures. PhIP damages DNA by forming covalent complexes with DNA carcinogen. In an effort to understand how the binding of PhIP to DNA may cause cancer, it is important to characterize the structures of PhIP-damaged DNA molecules. Our HPLC data support fluorescence and {sup 32}P Post-labeling studies which indicate the formation of several species of 2{prime}deoxyguanosine-(dG) or oligodeoxynucleotide-PhIP adducts. The reaction of PhIP with dG resulted in a reddish precipitate that was likely the major adduct, N-(deoxyguanosin-8-yl)-PhIP (dG-C8-PhIP) adduct, with a more polar adduct fraction remaining in the supernatant. Reversed-phase HPLC analysis of the adducts in the supernatant revealed the existence of species of much shorter retention times than the dG-C8-PhIP adduct, confirming that these species are more polar than dG-C8-PhIP. At least four adducts were formed in the reaction of PhIP with DNA oligomer. HPLC analysis of the PhIP-DNA oligomer supernatant after butanol extractions revealed four unresolved peaks which spectra had maximum wavelengths between 340 and 360 nm. Though adduct peaks were not completely resolved, there was {approximately}3 minutes interval between the DNA oligomer peak and the adduct peaks. Furthermore, fluorescence emission data of the DNA oligomer-PhIP adduct solution show heterogeneous binding. The more polar PhIP adducts were fraction-collected and their structures will be solved by nuclear magnetic resonance or x-ray crystallography.

Freeman, J.

1994-12-01

381

Osmolytes Contribute to pH Homeostasis of Escherichia coli  

PubMed Central

Background Cytoplasmic pH homeostasis in Escherichia coli includes numerous mechanisms involving pH-dependent catabolism and ion fluxes. An important contributor is transmembrane K+ flux, but the actual basis of K+ compensation for pH stress remains unclear. Osmoprotection could mediate the pH protection afforded by K+ and other osmolytes. Methods and Principal Findings The cytoplasmic pH of E. coli K-12 strains was measured by GFPmut3 fluorimetry. The wild-type strain Frag1 was exposed to rapid external acidification by HCl addition. Recovery of cytoplasmic pH was enhanced equally by supplementation with NaCl, KCl, proline, or sucrose. A triple mutant strain TK2420 defective for the Kdp, Trk and Kup K+ uptake systems requires exogenous K+ for steady-state pH homeostasis and for recovery from sudden acid shift. The K+ requirement however was partly compensated by supplementation with NaCl, choline chloride, proline, or sucrose. Thus, the K+ requirement was mediated in part by osmolarity, possibly by relieving osmotic stress which interacts with pH stress. The rapid addition of KCl to strain TK2420 suspended at external pH 5.6 caused a transient decrease in cytoplasmic pH, followed by slow recovery to an elevated steady-state pH. In the presence of 150 mM KCl, however, rapid addition of another 150 mM KCl caused a transient increase in cytoplasmic pH. These transient effects may arise from secondary K+ fluxes occurring through other transport processes in the TK2420 strain. Conclusions Diverse osmolytes including NaCl, KCl, proline, or sucrose contribute to cytoplasmic pH homeostasis in E. coli, and increase the recovery from rapid acid shift. Osmolytes other than K+ restore partial pH homeostasis in a strain deleted for K+ transport. PMID:20386696

Kitko, Ryan D.; Wilks, Jessica C.; Garduque, Gian M.; Slonczewski, Joan L.

2010-01-01

382

To PhET or Not To PhET: That Is the Question  

NASA Astrophysics Data System (ADS)

The investigation examined use of a Physics Education Technology (PhET) simulation versus a hands-on lab activity on student's conceptual understanding of physics content. Topics of study included vectors, projectile motion, direct current (DC) circuits, and the photoelectric effect. Participants consisted of high school juniors and seniors enrolled in a physics course. Assessment instruments consisted of questions taken from the Vector Evaluation Test, the Electric Circuits Concept Evaluation test, textbook test banks, or written to address concepts under evaluation. Data collection consisted of a pre-test score, a post-test score, and a gain score. The conceptual understanding of the experimental and the control groups did not significantly differ for vectors and DC circuits. The conceptual understanding of the experimental and control groups did significantly differ for projectile motion. The results indicated a conceptual gain for students using the photoelectric effect simulation. Student attitudes towards the PhET simulations were positive.

Casao, Robert

2008-10-01

383

Intracellular pH of symbiotic dinoflagellates  

NASA Astrophysics Data System (ADS)

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.

Gibbin, E. M.; Davy, S. K.

2013-09-01

384

PhET Simulation: Alpha Decay  

NSDL National Science Digital Library

This resource simulates the process of alpha decay, a type of radioactive decay in which an atomic nucleus emits an alpha particle. A number of different radioisotopes will undergo this type of decay; this web page simulates the Polonium-211 atom. Users can watch a single atom decay or work with a "Bucket O' Polonium" to view a pattern of decay. Editor's Note: Radioactive decay happens when an atomic nucleus of an unstable atom loses energy by emitting ionizing radiation. If you take a sample of a particular radionuclide, the half-life is the time it takes for half the atoms to decay. The Bucket O' Polomium" activity could be invaluable to help students understand the concept of half-life. They can observe 100 virtual polonium-211 atoms in the process of decay. Pause the action every 1/2 second to get a feel for the math associated with radioactive decay. Simple enough for grades 7-8, but can be adapted for AP Physics as well. See Related Materials for a link to a student guide specifically developed by the PhET team for use with this simulation.

2011-07-21

385

Cell wall pH and auxin transport velocity  

NASA Technical Reports Server (NTRS)

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.

Hasenstein, K. H.; Rayle, D.

1984-01-01

386

Measurement of soil pH: Problems and solutions  

Microsoft Academic Search

pH measurements in soil systems present unique challenges in terms of the interpretation of the values obtained. The principles behind the glass\\/calomel electrode system are discussed as a backdrop to pH measurements in both pure solutions and soils. The influence of the liquid junction potential and salt concentration on the pH values of soil water suspensions are discussed in detail

M. E. Sumner

1994-01-01

387

Optical measurements of pH in meat  

Microsoft Academic Search

The pH changes occurring in a carcass during the first 24 h after slaughter are important for the quality of the final meat or meat products. Protein denaturation will occur if pH falls to too low a level or if a relatively low pH sets in at a time after slaughter where the carcass temperature is still high. This will

J. R Andersen; C Borggaard; A. J Rasmussen; L. P Houmøller

1999-01-01

388

Soil pH and species diversity in coastal dunes  

Microsoft Academic Search

Soil pH was measured at two different spatial scales in coastal dunes on Norderney, North Sea, and in Mecklenburg-Vorpommern, Baltic Sea, Germany. Relationships between the variability in soil pH, species richness and species diversity are presented. Species richness and diversity were highest in grey dunes, where soil pH was at intermediate levels; both variables were lower in yellow and brown

M. Isermann

2005-01-01

389

Pathologie vgtale Relation entre le pH des sols  

E-print Network

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

Paris-Sud XI, Université de

390

Improvements in apparatus for pH measurement of water  

Microsoft Academic Search

An electronic device which automatically corrects the measurement of the pH of ammonia dosed power station boiler feedwater for changes in alkalinity brought about by the temperature dependence of the association of ammonia is described. It is noted that the pH depends on the temperature of the sample and that in a typical boiler plant where pH may be measured

I. R. Claxton

1979-01-01

391

Derivatization of Deltahedral Zintl Ions by Nucleophilic Addition: [Ph-Ge9-SbPh2]2-and [Ph2Sb-Ge9-Ge9-SbPh2]4-  

E-print Network

of addition to the clusters. It is determined that they are nucleophilic addition reactions where an anionicDerivatization of Deltahedral Zintl Ions by Nucleophilic Addition: [Ph-Ge9-SbPh2]2- and [Ph2Sb-Ge9@nd.edu Abstract: The type of the reactions of addition of exo-bonded groups to deltahedral Zintl ions such as Ge9

392

pH dependence of drug-membrane interaction  

NASA Astrophysics Data System (ADS)

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.

Basak, Uttam Kumar; Datta, Alokmay

2014-04-01

393

Molecular aspects of bacterial pH sensing and homeostasis  

PubMed Central

Diverse mechanisms for pH-sensing and cytoplasmic pH homeostasis enable most bacteria to tolerate or grow at external pH values that are outside the cytoplasmic pH range they must maintain for growth. The most extreme cases are exemplified by the extremophiles that inhabit environments whose pH is below 3 or above 11. Here we describe how recent insights into the structure and function of key molecules and their regulators reveal novel strategies of bacterial pH-homeostasis. These insights may help us better target certain pathogens and better harness the capacities of environmental bacteria. PMID:21464825

Krulwich, Terry A.; Sachs, George; Padan, Etana

2011-01-01

394

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

Microsoft Academic Search

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

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

1996-01-01

395

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

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

Goy, Anna

396

Rhizosphere pH dynamics in trace-metal-contaminated soils, monitored with planar pH optodes  

Microsoft Academic Search

The present study presents new insights into pH dynamics in the rhizosphere of alpine pennycress (Noccaea caerulescens (J. Presl & C. Presl) F.K. Mey), maize (Zea mays\\u000a L.) and ryegrass (Lolium perenne\\u000a L.), when growing on three soils contaminated by trace metals with initial pH values varying from 5.6 to 7.4. The pH dynamics\\u000a were recorded, using a recently developed

Stephan Blossfeld; Jérôme Perriguey; Thibault Sterckeman; Jean-Louis Morel; Rainer Lösch

2010-01-01

397

Analysis of pH dynamics in the distal esophagus utilizing pH histograms and acid clearance values  

Microsoft Academic Search

Existing scoring systems for 24-h esophageal pH recording rely heavily on total duration of acid reflux; little is known or understood of the significance of dynamic aspects of esophageal acid clearance. The 24-h pH profile and rate of acid clearance in the lower esophagus was analyzed in children with clinical features of gastro-esophageal reflux (GER). Twenty-four-hour histograms of pH and

Yasuhiro Watanabe; Takuji Todani; Akira Toki

1992-01-01

398

Effects of low environmental pH on blood pH and sodium balance of brook trout. [Brook  

Microsoft Academic Search

Brook trout (Salvelinus fontinales) exposed to a low environmental pH (3.0-3.3) showed a drop in mean blood pH from 7.39 to 6.97. Trout at an environmental pH of 3.5 lost 50% of their total body sodium. Control sodium influx (72.5 micromols\\/100 g hours) decreased to zero between pH 3.0 and 4.9 as Na efflux increased markedly over control levels. There

Randall K. Packer; William A. Dunson

1970-01-01

399

Adherence to the Mediterranean Diet, Cognitive Decline and Risk of Dementia Catherine Fart, PhD, Ccilia Samieri, MPH, Virginie Rondeau, PhD, Hlne Amieva, PhD,  

E-print Network

Authors Catherine Féart, PhD, Cécilia Samieri, MPH, Virginie Rondeau, PhD, Hélène Amieva, PhD, Florence Portet, MD, PhD, Jean-François Dartigues, MD, PhD, Nikolaos Scarmeas, MD, Pascale Barberger-Gateau, MD, PhD Author Affiliations: Research Center INSERM, U897, Bordeaux, France; Univ Victor Segalen Bordeaux

Boyer, Edmond

400

Bicarbonate Increases Tumor pH and Inhibits Spontaneous Metastases  

Microsoft Academic Search

The external pH of solid tumors is acidic as a consequence of increased metabolism of glucose and poor perfusion. Acid pH has been shown to stimulate tumor cell invasion and metastasis in vitro and in cells before tail vein injection in vivo. The present study investigates whether inhibition of this tumor acidity will reduce the incidence of in vivo metastases.

Ian F. Robey; Brenda K. Baggett; Nathaniel D. Kirkpatrick; Denise J. Roe; Julie Dosescu; Bonnie F. Sloane; Arig Ibrahim Hashim; David L. Morse; Natarajan Raghunand; Robert A. Gatenby; Robert J. Gillies

2009-01-01

401

Photoreversible changes in pH of pea phytochrome solutions  

SciTech Connect

Phytochrome is a chromoprotein that serves as the photoreceptor for a variety of photomorphogenic responses in plants. Phytochrome was isolated from etiolated pea seedlings. Photoinduced pH changes of an unbuffered solution of the phytochrome were monitored with a semimicrocombination pH electrode at pH 6.5. Red-light irradiation increased the pH of the medium. This alkalinization was reversed by a subsequent far-red-light irradiation. The magnitude and direction of the red-light-induced pH changes was dependent on the pH of the photocrome solution, and the maximum alkalinization was observed at pH 6.0, where the number of protons taken up per phytochrome monomer was 0.18. These results suggest that phytochrome is a multifunctional protein composed of a chromophoric domain and a hydrophobic domain. It is probable that the hydrophobic domain is responsible for the photoinduced change of hydrophobicity of phytochrome and that the ionizable groups responsible for the photoinduced pH changes are localized in the chromophoric domain. (JMT)

Tokutomi, S.; Yamamoto, K.T.; Miyoshi, Y.; Furuya, M.

1982-02-01

402

What if We Made Fewer Ph.D.'s?  

ERIC Educational Resources Information Center

Whenever a discussion opens about nonacademic employment for Ph.D.s, it is not long before someone suggests reducing graduate-school admissions. "The market for full-time scholars has fallen off a cliff lately," this argument goes, "so why not just train fewer of them?" The strategy to reduce the number of Ph.D. students recurs in those…

Cassuto, Leonard

2012-01-01

403

Ongoing PhD Research Department of Telematics  

E-print Network

Ongoing PhD Research Department of Telematics 2012 Report #12; #12ElectricalEngineering DepartmentofTelematics #12;Preface This report gives an overview of ongoing PhD research at the Department of Telematics at the Norwegian University of Science and Technology (NTNU), Trondheim, Norway. What

Malinnikova, Eugenia

404

Curriculum Vitae Greg S. Eisenhauer, Ph.D.  

E-print Network

@cc.gatech.edu Ph. 770­432­7391 Fax 770­432­4013 Education Ph.D. Computer Science: College of Computing, Georgia. Journal Articles ``Realizing Distributed Computational Laboratories,'' Beth Plale, Volker Elling, Greg Eisenhauer and Kaushik Ghosh, Operating Systems Review of the ACM Special Interest Group in Operating Systems

Eisenhauer, Greg S.

405

Effect of pH on biological phosphorus uptake.  

PubMed

An anaerobic aerobic laboratory scale sequencing batch reactor (SBR) was operated to study the effect of pH on enhanced biological phosphorus removal. Seven steady states were achieved under different operating conditions. In all of them, a slight variation in the pH value was observed during anaerobic phase. However, pH rose significantly during aerobic phase. The increase observed was due to phosphorus uptake and carbon dioxide stripping. When pH was higher than 8.2-8.25 the phosphorus uptake rate clearly decreased. The capability of Activated Sludge Model No. 2d (ASM2d) and Biological Nutrient Removal Model No. 1 (BNRM1) to simulate experimental results was evaluated. Both models successfully characterized the enhanced biological phosphorus removal performance of the SBR. Furthermore, BNRM1 also reproduced the pH variations observed and the decrease in the phosphorus uptake rate. This model includes a switch function in the kinetic expressions to represent the pH inhibition in biological processes. The pH inhibition constants related to polyphosphate storage process were obtained by adjusting model predictions to measured phosphorus concentrations. On the other hand, pH inhibition should be included in ASM2d to accurately simulate experimental phosphorus evolution observed in an A/O SBR. PMID:16958137

Serralta, J; Ferrer, J; Borrás, L; Seco, A

2006-12-01

406

Research degrees MPhil, PhD in Biology  

E-print Network

157-158 MPhil, PhD in Biology A first- or upper second-class undergraduate honours degree in a subject relevant to your chosen area of research MPhil, PhD in Environmental Science A first- or upper second-class database at www.sussex.ac.uk/funding Further information Deeptima Massey, Evolution, behaviour

Sussex, University of

407

Curriculum Vitae Donald Thomas Lysle, Ph.D.  

E-print Network

Curriculum Vitae Donald Thomas Lysle, Ph.D. Kenan Distinguished Professor Behavioral Neuroscience-962-2537 University of North Carolina Email: dlysle@email.unc.edu Chapel Hill, NC 27599-3270 Education Ph.D Abuse Research Grant (Renewal of R01-DA-13371): Behavioral Factors in Heroin's Effect on Nitric Oxide

Crews, Stephen

408

MA and Ph.D. in Applied Anthropology GRADUATE INTERNSHIP  

E-print Network

MA and Ph.D. in Applied Anthropology GRADUATE INTERNSHIP Description Students enrolled in the MA or Ph.D. in Applied Anthropology programs must complete a graduate internship with approved professional-supervision. The purpose of this internship is to give students practical training with the guidance of an internship

Escher, Christine

409

May 7, 2012 Isabel Gauthier, Ph.D.  

E-print Network

University Department of Psychology Cognitive Psychology, Introduction to Psychology, Statistics 1999May 7, 2012 1 Isabel Gauthier, Ph.D. Department of Psychology 308 Wilson Hall Vanderbilt University of USA EDUCATION 1993 - 1998 Yale University Department of Psychology New Haven, CT Ph.D. Psychology

Palmeri, Thomas

410

Functional Properties and Utilization of High pH Beef  

E-print Network

Two Texas fed beef and cow/bull packing plants were surveyed for high pH beef carcasses as well as the evaluation of functional properties of high pH beef in whole muscle beef jerky, frankfurters, and snack stick production. An estimated 42% of cow...

Garcia, Lyda G.

2010-10-12

411

Interlaboratory Test of pH Measurements in Rainwater.  

National Technical Information Service (NTIS)

An interlaboratory test of pH measurements in rainwater has been conducted. Various types of electrodes and junction materials were used in the test. The results of the exercise verify that there are significant differences in the pH values of low ionic s...

W. F. Koch, G. Marinenko, R. C. Paule

1985-01-01

412

PhD Studentship Computational Science and Engineering  

E-print Network

PhD Studentship Computational Science and Engineering University of Warwick - School of Engineering: Computational Science and Engineering We are looking for several PhD students with interests in the broad area of computational science and engineering. Areas of particular interest include but not limited to modeling

Davies, Christopher

413

COLLEGE OF PHARMACY Dean: William H. Riffee, PhD  

E-print Network

COLLEGE OF PHARMACY Dean: William H. Riffee, PhD Students 2,165 PharmD. 1201 M.S./Ph.D. WPPD 296 and Serology to 251 students around the world. Distance Education Masters Degree in Pharmacy Regulation Department of Pharmacy Practice. Research in Drug Delivery systems involving nanotechnology, Pharmacokinetic

Príncipe, José Carlos

414

Earth & Space Science PhDs, Class of 2001.  

ERIC Educational Resources Information Center

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…

Claudy, Nicholas; Henly, Megan; Migdalski, Chet

415

Nancy A. Banman, Ph. D. 970-491-0996  

E-print Network

and management of educational outreach within the CSU School of Social Work including: the MSW Distance Education ­ July 2007) Provided on-site coordination (Colorado Springs) for MSW Distance Education ProgramNancy A. Banman, Ph. D. 970-491-0996 nancy.banman@colostate.edu EDUCATION Ph. D. Bryn Mawr College

Stephens, Graeme L.

416

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

417

PhD in Education Old Dominion University  

E-print Network

PhD in Education Handbook Old Dominion University Fall 2010 #12;1 PhD in Education Handbook Letter plan your doctoral program at Old Dominion University. It is a tool that will help when you have Darden College of Education #12;2 Table of Contents Page Introduction to Old Dominion University 4

418

PhD in Education Occupational and Technical Studies  

E-print Network

PhD in Education Handbook Occupational and Technical Studies Old Dominion University Fall 2010 #12 concentrations. Use the handbook as you plan your doctoral program at Old Dominion University. It is a tool-DeVitis, Dean Darden College of Education #12;2 PhD Forms Darden College Forms Page Introduction to Old Dominion

419

SOCIOLOGY (Ph.D.) Executive Officer: Professor John Torpey  

E-print Network

233 SOCIOLOGY (Ph.D.) Executive Officer: Professor John Torpey The Graduate Center 365 Fifth Avenue New York, NY 10016 Email: Sociology@gc.cuny.edu http://www.gc.cuny.edu/Sociology/ facultY Richard D n Betty Yorburg n Jock Young n Sharon Zukin the PrOgram The Ph.D. Program in Sociology develops

Dennehy, John

420

Sensors and regulators of intracellular pH  

Microsoft Academic Search

Protons dictate the charge and structure of macromolecules and are used as energy currency by eukaryotic cells. The unique function of individual organelles therefore depends on the establishment and stringent maintenance of a distinct pH. This, in turn, requires a means to sense the prevailing pH and to respond to deviations from the norm with effective mechanisms to transport, produce

Joseph R. Casey; John Orlowski; Sergio Grinstein

2009-01-01

421

Emily N. Taylor, Ph.D. Department of Biological Sciences  

E-print Network

1 Emily N. Taylor, Ph.D://www.calpoly.edu/~bio/PERL EDUCATION Ph.D. (Biology) 2005 Arizona State University Dissertation: Proximate determinants of sexual size. K. Vredevoe, and E. N. Taylor. In press. Season and host affect ectoparasite intensity in Western

Taylor, Emily

422

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

423

Research plan PhD stud. Lillian Rstad  

E-print Network

............................................................................................................................14 #12;1. Introduction Access control is the main topic of this PhD-project and access control: information security, health care informatics and software engineering. Figure 1 - Access control in the crossResearch plan PhD stud. Lillian Røstad Thesis: "Context- and role-based dynamic access control

Røstad, Lillian

424

CURRICULUM VITAE FADY SK SHIBATA ALNAJJAR, PhD  

E-print Network

CURRICULUM VITAE FADY SK SHIBATA ALNAJJAR, PhD Research Scientist Intelligent Behavior Control Unit[at]brain[dot]riken[dot]jp Date of Birth: February 21, 1981. Interests Neurocomputational Models of Human Brain (learning/2007 ~ 03/2010 Ph.D. in System Design Engineering, Department of Human and Artificial Intelligence Systems

Kazama, Hokto

425

Ris-PhD-29(EN) Solid Oxide Electrolyser Cell  

E-print Network

Risø-PhD-29(EN) Solid Oxide Electrolyser Cell Risø National Laboratory Roskilde Denmark December 2006 #12;Introduction 2 Author: Søren Højgaard Jensen Title: Solid Oxide Electrolyser Cell Department: Department of Solid State Chemistry and Fuel Cells Risø-PhD-29(EN) December 2006 This thesis is submitted

426

CV Marianne Espeland Marianne Espeland, PhD  

E-print Network

CV Marianne Espeland Marianne Espeland, PhD Museum of Comparative Zoology, Room 401c, Harvard@fas.harvard.edu Current position Harvard University. Museum of Comparative Zoology and Department of Organismic and Evolutionary biology. Postdoctoral fellow Education Oct. 2010 Doctor of Philosophy (PhD) in systematic zoology

Espeland, Marianne

427

Samantha Sass, Writer Joslyn Yudenfreund Kravitz, Ph.D., Editor  

E-print Network

, Ph.D. #12;2 The While House Addresses the Economics of Work-Life Balance Recognizing the increasing1 Samantha Sass, Writer Joslyn Yudenfreund Kravitz, Ph.D., Editor Office of Research on Women the Economics of Work-Life Balance Women Are Earning Less and Working More in Academic Medicine Studies Find

Bandettini, Peter A.

428

Academic Career Mentoring Series Timothy M. Pinkston, Ph.D.  

E-print Network

doing now during Ph.D. or postdoc to foster work-life balance in academia? #12;Panel Format · PanelistsAcademic Career Mentoring Series Timothy M. Pinkston, Ph.D. Sr. Assoc. Dean of Engineering April 14, 2011 http://viterbi.usc.edu/students/phd/academic_resources/ "Academic Career Work-Life Balance" #12

Rohs, Remo

429

Det Naturvidenskabelige Ph.d.-udvalg Syddansk Universitet  

E-print Network

Det Naturvidenskabelige Ph.d.-udvalg Syddansk Universitet Dept. of Mathematics and Computer Science computer science and mathematics students in the course. One of the mathematics students was a Ph that the balance was fairly good, but if I have the same balance of students next time, I think it would

Boyar, Joan

430

CURRICULUM VITAE Stephen T. Fife, Ph.D.  

E-print Network

1 CURRICULUM VITAE Stephen T. Fife, Ph.D. March 2011 Department of Marriage and Family Therapy) 895-3117 Email: stephen.fife@unlv.edu Education: Ph.D. Marriage and Family Therapy Brigham Young University, 2004 Dissertation: A Grounded Theory of the Therapist's Perspective of Therapeutic Change

Ahmad, Sajjad

431

Debbie L. Stanislawski, Ph.D. stanislawskid@uwstout.edu  

E-print Network

CRAY Academy, Improving Practice through Reflection ICT-360 Intro to Media in Education and Training for Marketing and Business Education TCS-780 ICT Portfolio ICT-560 Intro to Media in Education and TrainingDebbie L. Stanislawski, Ph.D. stanislawskid@uwstout.edu Educational Background Ph.D. in Education

Wu, Mingshen

432

Nutrient Management Module No. 8 Soil pH and  

E-print Network

H is a measure of the soil solution's acidity and alkalinity. By definition, pH is the `negative logarithm4449-8 May 2009 Nutrient Management Module No. 8 Soil pH and Organic Matter by Ann McCauley, Soil Scientist; Clain Jones, Extension Soil Fertility Specialist; and Jeff Jacobsen, College of Agriculture Dean

Lawrence, Rick L.

433

Presenting AI to Non PhDBound Students Frank Klassner  

E-print Network

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

Massachusetts at Amherst, University of

434

Open Source Voting Arthur M. Keller, Ph.D.  

E-print Network

Open Source Voting Arthur M. Keller, Ph.D. David Mertz, Ph.D. #12;· Concept · In in Ballot Box Voter Makes Selections on Electronic Voting Machine EVM Prints Ballot Blind or Reading-Impaired Voter Verifies Ballot Voter Verifies Ballot Paper Ballots are Tallied and Reconciled with Electronic

Keller, Arthur M.

435

Predicting Computer Science Ph.D. Completion: A Case Study  

ERIC Educational Resources Information Center

This paper presents the results of an analysis of indicators that can be used to predict whether a student will succeed in a Computer Science Ph.D. program. The analysis was conducted by studying the records of 75 students who have been in the Computer Science Ph.D. program of the University of Alabama in Huntsville. Seventy-seven variables were…

Cox, G. W.; Hughes, W. E., Jr.; Etzkorn, L. H.; Weisskopf, M. E.

2009-01-01

436

DSc and PhD Comparison Minimum Academic Requirements  

E-print Network

DSc and PhD Comparison DSc PhD Minimum Academic Requirements: 72 approved graduate units Course on a DSc "final program" provided they are approved by the Chair 3-9 maximum credit hours of independent Graduate Board and the SEAS Registrar's Office. Website and Policies: The SEAS rules and guidelines for DSc

Subramanian, Venkat

437

DSc and PhD Comparison Minimum Academic Requirements  

E-print Network

DSc and PhD Comparison DSc PhD Minimum Academic Requirements: 72 approved graduate units Course on a DSc "final program" provided they are approved by the Chair Three to nine maximum credit hours and the SEAS Registrar's Office. Website and Policies: The SEAS rules and guidelines for DSc students

Subramanian, Venkat

438

Intragastric pH Monitoring. (Reannouncement with New Availability Information).  

National Technical Information Service (NTIS)

Buffering of intragastric pH is an accepted treatment modality for prophylaxis against the development of gastric stress ulcers. This method of prophylaxis is commonly based on the pH value acquired by measurement of gastric aspirate. Recent literature su...

D. M. Driscoll, W. G. Cioffi, N. C. Molter, W. F. McManus, A. D. Mason

1993-01-01

439

Extracellular pH, transmembrane distribution and cytotoxicity of chlorambucil.  

PubMed

The effects of extracellular pH (6.2 to 7.3) on uptake and cytotoxicity of the weak acid anti-tumor drug chlorambucil were investigated. Decreasing extracellular pH from 7.3 to 6.5 had a negligible effect on the intracellular pH of Chinese hamster V79 fibroblasts, thus resulting in the formation of a transmembrane pH gradient (intracellular alkaline). Addition of high concentrations of acetate or bicarbonate partially collapsed the pH gradient. Chlorambucil (pKa = 5.8) behaved as a weak acid with enhanced accumulation and cytotoxicity at extracellular pH less than 7.0. As predicted for a weak acid, partial collapse of the transmembrane pH gradient decreased both uptake and cell killing. Since the interstitial pH of micrometastases and solid tumors of many cancers is low relative to normal tissues, these results have potential implications for both in vitro drug testing and in vivo therapy. PMID:4015693

Mikkelsen, R B; Asher, C; Hicks, T

1985-07-15

440

Luminescence sensor of pH aqueous solutions  

NASA Astrophysics Data System (ADS)

This paper presents a luminescence sensor for real-time pH measurements. The emission spectra of mixture consisted of tested and base solution of fluorescein is used for analysis of the pH of aqueous solutions. The proposed microfluidic mixing system with integrated optical fibers allows pH measurement in the range 7.6 - 2.8. The developed sensor can be used in automatic pH control systems that work with aqueous solutions. The optimization of fluorescein concentration in base solution allowed to obtain linear characteristic of sensor response. The practical realization of the sensor with continuous monitoring of the pH of liquids and its potential applications are presented.

Wyrwas, Marek; Miluski, Piotr

2014-05-01

441

Dual pH electrode improves on-line diagnostics  

SciTech Connect

A new arrangement of pH electrodes and signal processing provides improved diagnostics in process control. A spreadsheet analysis provides insight to the strengths and weaknesses of the method. Double or triple redundancy pH systems have long been used to increase the probability of reliable measurement values in critical processes. These consisted of off-the-shelf pH meters whose outputs were sent through voting logic which either selected the output to be used, or selected and calculated a mean pH value. Newer pH systems have provided more sophisticated self-diagnostic methods, reducing the need for triple redundance. A new method and apparatus provides improved diagnostic capability in a less complex design. When combined with reactionary and true predictive diagnostics, this method can provide increased confidence in reading validity with less experience and complexity.

King, K. [Great Lakes Instruments, Milwuakee, WI (United States)

1995-12-31

442

MERIT Award Recipient: Stephen P. Goff, Ph.D.  

Cancer.gov

The Goff laboratory is interested in the replication of a simple retrovirus, the Moloney murine leukemia virus, and the interaction of the virus with the host. The ultimate goal of the research is to determine the roles of each of the viral proteins in the complex viral life cycle, and to identify the impact of these proteins on host cellular machinery.

443

The MD-PhD researcher: what species of investigator?  

PubMed

Though MD-PhD programs have grown rapidly since their introduction in the mid-1960s, and are widely regarded as fostering excellent young investigators and future leaders in research and academic medicine, the types of research careers their graduates can be expected to pursue have been a point of some confusion. Some regard MD-PhD programs as a flexible approach to scientific training, producing both basic scientists and clinical investigators, while others tend to view these programs as generating either one type of researcher or the other. This range of expectations associated with dual-degree programs and their graduates has perplexed observers over the years and complicated the efforts of planners and policymakers in projecting workforce needs and generating recommendations for research training. To learn more about the research careers of MD-PhDs and how these investigators fit into the larger biomedical research workforce, the authors undertook a review of the types of research proposed by dual-degree and other investigators in 12,116 applications to the National Institutes of Health in 1993 and 1994. In comparing the types of research projects proposed by investigators of various degree types (MDs, MD-PhDs, and PhDs) the authors found that the research interests of the MD-PhDs studied were more closely aligned with the laboratory pursuits of most of their PhD counterparts than with the more clinically-oriented endeavors of those with the MD degree alone. During a time when there are persistent concerns about a shortage of investigators to conduct clinical research and growing fears that America's universities may be producing more PhDs than can be meaningfully employed in the scientific enterprise, the authors' finding indicates a need for future workforce planning to better reflect the respective roles played by MDs, MD-PhDs, and PhDs in biomedical and behavioral research. PMID:9114861

Sutton, J; Killian, C D

1996-05-01

444

Plant based dietary supplement increases urinary pH  

PubMed Central

Background Research has demonstrated that the net acid load of the typical Western diet has the potential to influence many aspects of human health, including osteoporosis risk/progression; obesity; cardiovascular disease risk/progression; and overall well-being. As urinary pH provides a reliable surrogate measure for dietary acid load, this study examined whether a plant-based dietary supplement, one marketed to increase alkalinity, impacts urinary pH as advertised. Methods Using pH test strips, the urinary pH of 34 healthy men and women (33.9 +/- 1.57 y, 79.3 +/- 3.1 kg) was measured for seven days to establish a baseline urinary pH without supplementation. After this initial baseline period, urinary pH was measured for an additional 14 days while participants ingested the plant-based nutritional supplement. At the end of the investigation, pH values at baseline and during the treatment period were compared to determine the efficacy of the supplement. Results Mean urinary pH statistically increased (p = 0.03) with the plant-based dietary supplement. Mean urinary pH was 6.07 +/- 0.04 during the baseline period and increased to 6.21 +/- 0.03 during the first week of treatment and to 6.27 +/- 0.06 during the second week of treatment. Conclusion Supplementation with a plant-based dietary product for at least seven days increases urinary pH, potentially increasing the alkalinity of the body. PMID:18990209

Berardi, John M; Logan, Alan C; Rao, A Venket

2008-01-01

445

Author: Francis RG Amrit, PhD, Department of Pediatrics, School of Medicine PI: Arjumand Ghazi, PhD  

E-print Network

Encapsulated Polymeric Nanoparticles Promote Endoderm Differentiation in Human Embryonic Stem Cells Author: Identification of an Epithelial Stem Cell Hierarchy in the Mouse Esophagus Author: Riccardo Gottardi, Ph Filamentous Bacteria (SFB) Author: Elizabeth J. Leslie, PhD, Department of Oral Biology, School of Dental

Benos, Panayiotis "Takis"

446

Ph.D. Recipients listed by year. 1 2009 Zhang, Rui Ph.D. Advisor: T. Kowalewski; R.  

E-print Network

Polymerization in Aqueous Dispersed Media 2008 He, Gaofei Ph.D. Advisor: D. Ly Development of Conformationally of Macromolecular Architecture by Synergistic Combination of ATRP, NMP and RAFT Polymerization 2009 Mc Tailored by Controlled Radical Polymerization 2009 Constantin, Tudor Ph.D. Advisor: B. Armitage Selection

Kurnikova, Maria

447

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

E-print Network

Roadmap: 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 at the time of admission into the program to academic advisor in the College of Public Health Semester One

Sheridan, Scott

448

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

E-print Network

Roadmap: Public Health-Allied Health-Bachelor of Science in Public Health [PH-BSPH-PH-AHLT] College of Public Health Catalog Year: 2013-2014 Page 1 of 2 | Last Updated: 24-Apr-13/LNHD This roadmap at the time of admission into the program to an academic advisor in the College of Public Health Semester One

Sheridan, Scott

449

N Ph.D SCHOOL DIRETTORE Ph.D. Programme MAIL TO 1.1 Prehistoric Archaeology  

E-print Network

Appendix 1 N° Ph.D SCHOOL DIRETTORE Ph.D. Programme MAIL TO 1.1 Prehistoric Archaeology 1.2 Oriental Archaeology 1.3 Classical Archaeology 1.4 Etruscology 1.5 Ancient Topography 1.6 Archaeology Economics and Finance 5.2 Political Economy 5.3 Methods and Models for Economics and Finance 6.1 Curriculum

Di Pillo, Gianni

450

Prism: a New Approach to Radiotherapy Planning Software Ira J. Kalet, Ph.D., Jonathan P. Jacky, Ph.D.,  

E-print Network

Prism: a New Approach to Radiotherapy Planning Software Ira J. Kalet, Ph.D., Jonathan P. Jacky, Ph and Physics. Communications and reprint requests to: Ira J. Kalet Radiation Oncology Department University of Washington Box 356043 Seattle, Washington 98195-6043 Tel: (206) 548-4107 E-mail: ira

Yetisgen-Yildiz, Meliha

451

Continuous pH monitoring in a perfused bioreactor system using an optical pH sensor.  

PubMed

Monitoring and regulating the pH of the solution in a bioprocess is one of the key steps in the success of bioreactor operation. An in-line optical pH sensor, based on the optical absorption properties of phenol red present in the medium, was developed and tested in this work for use in NASA space bioreactors based on a rotating wall-perfused vessel system supporting a baby hamster kidney (BHK-21) cell culture. The sensor was tested over three 30-day and one 124-day cell runs. The pH sensor initially was calibrated and then used during the entire cell culture interval. The pH reported by the sensor was compared to that measured by a fiber optically coupled Shimadzu spectrophotometer and a blood gas analyzer. The maximum standard error of prediction for all the four cell runs for development pH sensor against BGA was +/-0.06 pH unit and for the fiber optically coupled Shimadzu spectrophotometer against the blood gas analyzer was +/-0.05 pH unit. The pH sensor system performed well without need of recalibration for 124 days. PMID:11948454

Jeevarajan, Antony S; Vani, Sundeep; Taylor, Thomas D; Anderson, Melody M

2002-05-20

452

Modern Physics II: PH 352-4B & PH 352L-G7 Spring Semester 2009  

E-print Network

, and Particles (2nd Edition) J. Eisberg & R. Resnick Wiley Modern Physics (2nd Edition) K. S. Krane Wiley CatalogModern Physics II: PH 352-4B & PH 352L-G7 Spring Semester 2009 Time and location: Mondays, Tuesdays.html Modern Physics for Scientists and Engineers Thornton & Rex, 3rd Ed., 2006 Publisher: Thomson

Camata, Renato P.

453

Liposomal vincristine for relapsed or refractory Ph-negative acute lymphoblastic leukemia: a review of literature  

PubMed Central

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

Pathak, Priyanka; Hess, Rosemary

2014-01-01

454

Improved granular activated carbon for the stabilization of wastewater PH  

SciTech Connect

Laboratory studies have identified the cause of the pH rise, which occurs during water treatment with activated carbon, as an interaction between the naturally occurring anions and protons in the water and the carbon surface. The interaction can be described as an ion exchange type of phenomenon, in which the carbon surface sorbs the anions and corresponding hydronium ions from the water. These studies have shown that the anion sorption and resulting pH increase is independent of the raw material used for the activated carbon production, e.g. bituminous or subbituminous coal, peat, wood or coconut. Also, the pH excursions occur with virgin, reactivated, and acid washed granular carbons. Current pH control technologies focus on adjustment of the wastewater pH prior to discharge or recycle of the initial effluent water until the pH increase abates. However, improved water pH control options have been realized by altering the carbon surface through controlled oxidation rather than the water chemistry or extended preprocessing at the treatment site.

Farmer, R.W.; Dussert, B.W.; Kovacic, S.L. [Calgon Carbon Corp., Pittsburgh, PA (United States)

1996-12-31

455

Damage Initiation and Ultimate Tensile Strength of Scaled [0 deg n/90 deg n/0 deg n]sub T Graphite-Epoxy Coupons  

NASA Technical Reports Server (NTRS)

Previous research on scaling effects in composite materials has demonstrated that the stress levels at first ply failure and ultimate failure of composite laminates are dependent on the size of the laminate. In particular, the thickness dimension has been shown to be the most influential parameter in strength scaling of composite coupons loaded in tension. Geometrically and constitutively scaled laminates exhibit decreasing strength with increasing specimen size, and the magnitude of the strength-size effect is a function of both material properties and laminate stacking sequence. Some of the commonly used failure criteria for composite materials such as maximum stress, maximum strain, and tensor polynomial (e.g., Tsai-Wu) cannot account for the strength-size effect. In this paper, three concepts are developed and evaluated for incorporating size dependency into failure criteria for composite materials. An experimental program of limited scope was performed to determine the first ply failure stress in scaled cross-ply laminates loaded in tension. Test specimens were fabricated of AS-4/3502 graphite-epoxy composite material with laminate stacking sequences of [0 deg n/90 deg n/o deg n]subT where n=1-6. Two experimental techniques were used to determine first ply failure, defined as a transverse matrix crack in the 90 deg ply: (1) step loading with dye penetrant x-ray of the specimen at each load interval, and (2) acoustic emission. The best correlation between first ply failure analysis and experimental data was obtained using a modified Weibull approach which incorporated the residual thermal stress and the outer ply constraint, as well as the ply thickness effect. Finally, a second set of experiments was performed to determine the tensile response and ultimate failure of the scaled cross-ply laminates. The results of these experiments indicated no influence of specimen size on tensile response or ultimate strength.

Jackson, Karen E.; Prosser, William H.

1997-01-01

456

PhET Teacher Ideas & Activities: Ray Optics PhET Lab  

NSDL National Science Digital Library

This is a high school computer lab activity developed specifically for use with the PhET simulation Geometric Optics. It contains a two-page student lab guide with a ten-point formal assessment at the conclusion. The primary objective is to promote understanding of convergent lens optics using a 3-ray system (parallel-focal, focal-parallel, central). Directions are explicit, allowing the flexibility to conduct the activity in either a school computer lab or at a student's home. SEE RELATED ITEMS on this page for a link to the accompanying simulation. This resource is part of a larger collection of interactive Java simulations for students of physics, developed by the Physics Education Technology project at the University of Colorado.

2009-05-21

457

Calculation of Estimated Ultimate Recovery for wells in continuous-type oil and gas accumulations of the Uinta-Piceance Province  

USGS Publications Warehouse

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.

Cook, T.

2003-01-01

458

A first-principles study on the effect of biaxial strain on the ultimate performance of monolayer MoS2-based double gate field effect transistor  

NASA Astrophysics Data System (ADS)

In this work, the effect of biaxial strain on the electronic band structure of monolayers of MoS2 is investigated. The effective mass of carriers under different strain values is extracted and the achieved results are discussed. For the first time, we have assessed the effect of biaxial strain on the ultimate performance of MoS2-based double gate field effect transistors (DGFETs). The results indicate that by strain engineering, a significant performance improvement of MoS2-based DGFETs can be achieved.

Mohammad Tabatabaei, Seyed; Noei, Maziar; Khaliji, Kaveh; Pourfath, Mahdi; Fathipour, Morteza

2013-04-01

459

Physiological carbon dioxide, bicarbonate, and pH sensing  

PubMed Central

In biological systems, carbon dioxide exists in equilibrium with bicarbonate and protons. The individual components of this equilibrium (i.e., CO2, HCO3?, and H+), which must be sensed to be able to maintain cellular and organismal pH, also function as signals to modulate multiple physiological functions. Yet, the molecular sensors for CO2/HCO3?/pH remained unknown until recently. Here, we review recent progress in delineating molecular and cellular mechanisms for sensing CO2, HCO3?, and pH. PMID:20683624

Tresguerres, Martin; Buck, Jochen

2010-01-01

460

PhET Teacher Ideas & Activities: Gas Laws  

NSDL National Science Digital Library

This item is a middle school lesson plan developed specifically for use with the PhET simulation "Gas Properties". It provides step-by-step instructions for setting up the simulation in a computer lab and engaging students with a series of related questions and tasks. Student worksheets are available in printable format and include graph construction/analysis. This lesson won a PhET Gold Star for excellence. This item is part of a larger collection of educational resources developed by the Physics Education Technology project (PhET).

Borenstein, Sarah

2008-10-22

461

The structure of Ph*, generalized de Rham, and entropy  

NASA Astrophysics Data System (ADS)

In this note I shall continue the study of the non-commutative phase space functor, Ph(A), defined for any associative algebra A, and its derived differential co-simplicial algebra, Ph*(A). The main focus will be on its relationship to the classical de Rham complex, to the dynamics of finite dimensional Ph?(A)-modules, and to the notion of Entropy. These subjects are treated within the set-up of my book [2011 Geometry of Time-Spaces (World Scientific)].

Laudal, O. A.

2014-09-01

462

PhET Teacher Ideas & Activities: Investigating Waves  

NSDL National Science Digital Library

This is a four-page student guide developed for use with the PhET "Wave on a String" simulation. Written by a high school teacher, the activity provides a roadmap for secondary physical science students to learn about wave properties in an interactive environment. Students explore how amplitude, frequency, and wavelength affect the movement and speed of a wave. The wave simulation, which must be open and displayed to complete this activity, is available from PhET at: Wave on a String. This lesson is part of PhET (Physics Education Technology Project), a large collection of free interactive simulations for science education.

Project, The P.; Flowers, Nancy

463

Temperature and pH stability of cellouronic acid  

Microsoft Academic Search

Cellouronic acid (CUA), (1 ? 4)-?-d-polyglucuronate sodium salt, was prepared from regenerated cellulose by 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)-mediated\\u000a oxidation in water at pH 10. Changes in chemical structure and degree of polymerization (DP) of CUA by treatment in water\\u000a under various pH and temperature conditions were studied to evaluate the stability of CUA. No depolymerization occurred on\\u000a CUA in water at pH 1.0–7.0

Shuji Fujisawa; Takuya Isogai; Akira Isogai

2010-01-01

464

Key role of work hardening in superconductivity/superfluidity, heat conductivity and ultimate strain increase, evolution, cancer, aging and other phase transitions  

E-print Network

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.

V. P. Kisel

2009-05-27

465

Jason P. Mitchell, Ph.D. Office Address  

E-print Network

), Department of Psychology, Harvard University Professional activities Journal editing and reviewing1 Jason P. Mitchell, Ph.D. Office Address Department of Psychology Harvard University Northwest appointments Graduate training · September 1997 ­ June 2003, Graduate student, Department of Psychology

Mitchell, Jason

466

Stress-Corrosion Cracking in Martensitic PH Stainless Steels  

NASA Technical Reports Server (NTRS)

Precipitation-hardening alloys evaluated in marine environment tests. Report describes marine-environment stress-corrosion cracking (SCC) tests of three martensitic precipitation hardening (PH) stainless-steel alloys.

Humphries, T.; Nelson, E.

1984-01-01

467

PhD studentship in DNA biophysics Imperial College London  

E-print Network

PhD studentship in DNA biophysics Imperial College London Department of Chemistry, Faculty groups on chemical biology, chemical physics and biophysics, complex fluids, liquid crystals, nanoscience unique experience in DNA biophysics, doing research and attending lecture courses of choice

van der Heijden, Gert

468

Young-sup Yoon, MD, PhD  

Cancer.gov

Meetings & Events Home Agenda Speaker Biosketches Abstracts Logistics Contact Speaker Biosketches Young-sup Yoon, MD, PhD(School of Medicine, Emory University) The goal of his laboratory is to develop a strategy for regenerating cardiovascular

469

EINLADUNG ZUM KOLLOQUIUM Prof. Mark Walker, Ph.D.  

E-print Network

( EINLADUNG ZUM KOLLOQUIUM Prof. Mark Walker, Ph.D. (Schenectady/USA, z.Zt. Berlin) War der Jahrhundert ausgelöst hat. Mark Walker ist John Bigelow Professor of History am Department of History, Union

Bongartz, Klaus

470

Industrial Engineering-BS ,PhD option in Engineering  

E-print Network

I Industrial Engineering- BS ,PhD option in Engineering Industrial & Management Engineering - BS MS Engineering, Civil Engineering, Electrical 8c Computer Engineering, Environmental Engineering, Industrial Industrial Technoloity - BS option in Technology Education Interdisciplinary Studies - BA; BS J. Japan

Dyer, Bill

471

JULIA CASSANITI, Ph.D. Department of Anthropology  

E-print Network

1 JULIA CASSANITI, Ph.D. Department of Anthropology Washington State University PO Assistant Professor of Psychological and Medical Anthropology 2010 - 2012 Stanford University Culture and Mind Medical Postdoctoral Fellow, Department of Anthropology 2009 - 2010 University of California, San

Kohler, Tim A.

472

Matt Knox PhD Candidate Department: Biological Sciences  

E-print Network

biodiversity project and an International Polar Year voyage to the Ross Sea. Key Research questions. 1. WhatMatt Knox PhD Candidate Department: Biological Sciences Research Project: Biodiversity and patterns

Waikato, University of

473

Ph.D Candidate School of Mechanical, Industrial, and  

E-print Network

1 Yuming Qiu Ph.D Candidate School of Mechanical, Industrial, and Manufacturing Engineering Oregon. INTRODUCTION Collaborative system design involves project planning, concept development, and product a product together (shared objectives). Given stringent budgetary constraints and schedule conflicts

Yim, Solomon C.

474

Dan Dorsa, PhD Vice President, Research  

E-print Network

Security Officer Robert Staat Audit & Advisory Services Manager On Leave Sr. Auditors Amy Graves Staff Integrity Officer Phil Streeter, PhD, CWC IACUC Chair Assist Compliance Officers Jayne Weinmann Erin

Chapman, Michael S.

475

Ris-PhD-23(EN) Approaches to systems biology  

E-print Network

fulfilment of the requirements for the Ph.D. degree at the Department of Biochemistry and Molecular Biology National Laboratory Lars Folke Olsen, Associate professor Department of Biochemistry and Molecular Biology

476

Dynamic Ecodriving in Northern California Susan Shaheen, PhD  

E-print Network

Dynamic Ecodriving in Northern California Susan Shaheen, PhD Lecturer and Co;Presentation Overview · TSRC introduction · Project background · Dynamic ecodriving de from sponsored collaboration between UC Berkeley and UC Riverside on Dynamic

Kammen, Daniel M.

477

CURRICULUM VITAE L. Clarke Cox, Ph.D.  

E-print Network

CURRICULUM VITAE L. Clarke Cox, Ph.D. Current Position: Chief of Audiology Department and Rehabilitation Sciences Boston University Former Positions: Chief of Audiology, University Hospital, Boston, MA (1988 ­ 1996) Assistant & Associate Professor of Audiology Cleveland State University, 1975

Guenther, Frank

478

PhET Teacher Activities: Properties of a Wave  

NSDL National Science Digital Library

This simulation-based activity for middle school was developed to help students build a foundation to understand basic wave properties. It was created by a middle school teacher to be used specifically with the PhET simulation "Wave on a String". It guides learners in data collection as they explore amplitude, wavelength, and frequency. Included are lesson plans, pre-lab concept questions, an inquiry-based partner activity (Day 1), and step-by-step student guide for the Day 2 computer simulation activity. This author was awarded the PhET Gold Star for excellence. The wave simulation, which must be open and displayed to complete this activity, is available from PhET at: Wave on a String. This lesson is part of PhET (Physics Education Technology Project), a large collection of free interactive simulations for science education.

Project, The P.; Esler, Jackie

479

PhD Dissertation Privacy Preserving Enforcement of Sensitive Policies  

E-print Network

PhD Dissertation Privacy Preserving Enforcement of Sensitive Policies in Outsourced and Distributed of Trento, Italy Privacy Preserving Enforcement of Sensitive Policies in Outsourced and Distributed and distributed environments are cloud computing and opportunistic networks, respectively. In this dissertation

480

Tenure Track Seminar - Melissa Friesen, Ph.D.  

Cancer.gov

February 26, 2015 10:30 AM - 11:30 AM Shady Grove Room TE 406 + Add to Outlook Calendar Speaker: Melissa Friesen, Ph.D., Investigator  Occupational and Environmental Epidemiology Branch  Division of Cancer Epidemiology and Genetics, National Cancer

481

Montana State University 1 Ph.D. Degree in Ecology  

E-print Network

Montana State University 1 Ph.D. Degree in Ecology and Environmental Sciences This cross of ecology and environmental sciences, within the unparalleled natural laboratory that is the Greater Yellowstone Ecosystem. Particular program strengths include terrestrial and aquatic ecology, environmental

Lawrence, Rick L.

482

ChemTeacher Resource: PhET Balloons and Buoyancy  

NSDL National Science Digital Library

This simulator expands on the PhET Gas Laws simulator. In addition to controlling the pressure, volume, temperature, and number of particles, students can now control balloons and other objects and balance pressures inside and outside of the object.

Colorado, Phet I.

2011-01-01

483

Updated 1-12 John A. Montgomery, PH.D.  

E-print Network

for Executive Leadership from American University's School of Public Affairs. Dr. Montgomery received his, also in physics, in 1969. He received his PhD in physics from the Catholic University of America

484

Research Funding Update Steven O. Moldin, Ph.D.  

E-print Network

Olson Office Manager Natasha Walker #12;Research Advancement Exec Dir - Steven Moldin · PhD, clinical Systems · Advanced Electronics · Configurable Robotics · Grid Technologies · Very large scale data

Zhou, Chongwu

485

Curriculum Vitae -Smolka/2012 Marcus Bustamante Smolka, Ph. D.  

E-print Network

Novello Laboratory of Exercise Biochemistry, State University of Campinas, Brazil 1998-2002 Ph.D. - Biochemistry and Molecular Biology - State University of Campinas, Brazil 1997-1998 Master's - Biochemistry - State University of Campinas

Keinan, Alon

486

PhD Summer School in Empirical Research Methods  

E-print Network

PhD Summer School in Empirical Research Methods SSERM 2014 The Summer School in Empirical Research Methods (SSERM) at the University of St.Gallen, Switzerland, is a new and high-calibre 2-week integrated

Wu, Yih-Min

487

Adult Psychopathology (620) Professor: Maureen Zalewski, Ph.D.  

E-print Network

Adult Psychopathology (620) Fall 2013 Professor: Maureen Zalewski, Ph.D. Office: 223 Franklin, conceptualization, and research on psychopathology. These various themes will primarily be reviewed in the context should approach defining and organizing what is psychopathology. Historical, socio

Lockery, Shawn

488

PhD Program in Bioengineering and Curriculum Humanoid Robotics  

E-print Network

1 PhD Program in Bioengineering and Robotics Curriculum Humanoid Robotics Research themes 1. EVENT-DRIVEN VISION SENSORS FOR HUMANOID ROBOTS .........................................................2 2. EVENT. ALTERNATIVE DESIGNS FOR THE ICUB ROBOT THROUGH RAPID PROTOTYPING ......................5 5. MACHINE LEARNING

Robbiano, Lorenzo

489

Student Handbook Ed.D. & Ph.D. Programs  

E-print Network

Information 8616 Catherine M. Brighton, Ph.D., Program Coordinator Room 287A, Ruffner Hall 434.924.1022 cmb3s@virginia.edu or brighton@virginia.edu 1170 Carolyn M. Callahan, Ph.D. Room 282, Ruffner Hall 434.924.0791 cmc@virginia.edu ---- Julie Baird, Director Saturday/Summer Enrichment Program Room 264, Ruffner Hall 434.924.7177 jab9a@virginia

Acton, Scott

490

Estimating VFA concentrations in prefermenters by measuring pH  

Microsoft Academic Search

We present a fundamental relationship between the pH, volatile fatty acid (VFA) concentration and alkalinity in prefermenters. Once the relationship is established, wastewater treatment plant operators can estimate on-line the VFA concentration in a prefermenter at any time from pH measurements. Parameters in the model can either be measured at some reference point for the wastewater in question, such as

Elisabeth v. Münch; Paul F. Greenfield

1998-01-01

491

The Measurement of pH - Definition Standards and Procedures  

Microsoft Academic Search

Abstract The definition of a “primary method,of measurement” (1) has permitted a full consideration of the definition of primary standards for pH, determined by a primary method (cell without transference, Harned cell), of the definition of secondary standards by secondary methods, and of the question whether pH, as a conventional quantity, can be incorporated within the internationally-accepted SI system of

R. p. Buck; S. Rondinini; A. k. Covington; F. g. k. Baucke; C. m. a. Brett; M. f. Camoes; M. j. t. Milton; T. Mussini; R. Naumann; K. w. Pratt; P. Spitzer

492

Workshop for PhD Students in Object Oriented Programming  

Microsoft Academic Search

Abstract. The objective of the 13th edition of Ph Doctoral Students in Object-Oriented Systems workshop,(PHDOOS) was to offer an oppor- tunity for PhD students to meet and share their research experiences, and to discover commonalities in research and student ship. In this way, the participants may receive insightful comment about their research, learn about related work and initiate future research

Pedro J. Clemente; Miguel A. Pérez; Sergio Luján-mora; Hans P. Reiser

2003-01-01

493

Workshop for PhD Students in Object Oriented Programming  

Microsoft Academic Search

The objective of the 13th edition of Ph Doctoral Students in Object-Oriented Systems workshop (PHDOOS) was to offer an oppor- tunity for PhD students to meet and share their research experiences, and to discover commonalities in research and student ship. In this way, the participants may receive insightful comment about their research, learn about related work and initiate future research

Pedro J. Clemente; Miguel A. Perez; Sergio Lujan; Hans Reiser

494

Throughfall pH: effect of precipitation timing and amount  

Microsoft Academic Search

Precipitation, throughfall, and stream pH were measured weekly over a 27-week period in 1982 on the Little Millseat watershed in eastern Kentucky. The average pH values over the study period were 4.3, 4.9, and 6.4, respectively, indicating significant buffering as water moved from the atmosphere, through the deciduous canopy, and through or over the soil to the stream. Regression analysis

Ian D. Moore

1983-01-01

495

A profluorescent ratiometric probe for intracellular pH imaging.  

PubMed

A ratiometric pH probe composed of a fluorescein moiety and an ionic near-infrared-emitting phosphorescent cyclometalated iridium(III) complex bis(6-(benzo[b]thien-2-yl)phenanthridinato)(4-(3-carboxypropyl)-4'-methyl-2,2'-bipyridine)iridium(III) was synthesized. With good cell permeability, the probe demonstrated a linear ratiometric response to the pH variation in the physiological range in HeLa cell assay. PMID:25281157

Zhang, Qingqing; Zhou, Ming

2015-01-01

496

Analysis of Latitudinal PH3 Abundance Variation on Saturn  

NASA Astrophysics Data System (ADS)

The visible infrared mapping spectrometer(VIMS) onboard the Cassini spacecraft has observed latitudinal variations in the PH3 absorption strength over Saturn's southern hemisphere (Baines et al. 2005, Earth, Moon, and Planets, submitted) in the near-infrared region. While CH4, NH3, and H2 absorption features over the spectral range of 1-5 micron are much weaker at the equatorial region - indicating a higher tropospheric cloud top - than in mid-latitude regions, PH3 absorption is nearly unchanged. This suggests that the upper troposphere of the equatorial region contains more PH3 than that of the mid-latitudes on Saturn. Since the horizontal PH3 abundance variation likely indicates commensurate variability of convective activity from deep interior of Saturn, we are combining CH4 band cloud modeling and PH3 band analysis to quantitatively examine the PH3 increase associated with increased dynamical activities in Saturn's equatorial region. As the first step of our analysis, PH3 absorption spectrum is synthesized from the spectroscopic data obtained in the Jet Propulsion Laboratory (Butler et al. 2005, J. Mol. Spectrosc, submitted). The line-by-line spectral features are summed up to create synthetic transmission spectra at different pressures. Following Baines et al. 1993 (J. Geophys. Res., 98, E3, 5517-5529), the transmission spectra are binned to derive effective absorption coefficients over the passband width that matches the spectral resolution of VIMS. We present our preliminary results of the PH3 band transmissions and effective absorption coefficients. The first author of this presentation is supported by the Research Associateship Award of the National Research Council at the Jet Propulsion Laboratory.

Temma, T.; Baines, K. H.; Brown, L.; Butler, R.

2005-08-01

497

The Labor Market for New Ph.D. Economists  

Microsoft Academic Search

Presents results from a survey of 450 new (1996-97) Ph.D. economists, providing information about employment, underemployment, employers, work activities, salaries, and job satisfaction. Comparisons are made across ranks of the graduates' Ph.D. programs, sectors of employment and subfields of economics, as well as over time. Labor market outcomes for economists also are compared with those of seven other disciplines. Results

John J. Siegfried; Wendy A. Stock

1999-01-01

498

pH and the Effectiveness of Antacid Tablets  

NSDL National Science Digital Library

This lab activity from the Biotechnology Alliance for Suncoast Biology Educators demonstrates the concept of pH. It has an activity that allows students to evaluate the effectiveness of antacid tablets including developing a testable hypothesis. The lesson includes background information on pH and its importance in biology. It provides a list of the materials needed for the activity and the procedure.

Keirle, Matt

2012-07-10

499

Ris-PhD-Report Sensing the wind profile  

E-print Network

of the Atmosphere 22 4.1 Lidar 22 4.2 Ceilometer 30 5 Modeling of the wind profile 34 5.1 The Wind Profile over LandRisø-PhD-Report Sensing the wind profile Alfredo Peña Risø-PhD-45(EN) March 2009 #12;Author: Alfredo Peña1,2 Title: Sensing the wind profile 1 Risø National Laboratory for Sustainable Energy

500

Seawater pH and Anthropogenic Carbon Dioxide  

E-print Network

In 2005, the Royal Society published a report titled "Ocean acidification due to increasing atmospheric carbon dioxide". The report's principal conclusion-that average ocean pH could decrease by 0.5 units by 2100-is demonstrated here to be consistent with a linear extrapolation of very limited data. It is also shown that current understanding of ocean mixing, and of the relationship between pH and atmospheric carbon dioxide concentration, cannot justify such an extrapolation.

Gerald E. Marsh

2008-10-20