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Zeitschriftenartikel zum Thema „PN transition“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 29. Juli 2025

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1

MUKUND, MADHAVAN. "PETRI NETS AND STEP TRANSITION SYSTEMS." International Journal of Foundations of Computer Science 03, no. 04 (1992): 443–78. http://dx.doi.org/10.1142/s0129054192000231.

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Labelled transition systems are a simple yet powerful formalism for describing the operational behaviour of computing systems. They can be extended to model concurrency faithfully by permitting transitions between states to be labelled by a collection of actions, denoting a concurrent step. Petri nets (or Place/Transition nets) give rise to such step transition systems in a natural way—the marking diagram of a Petri net is the canonical transition system associated with it. In this paper, we characterize the class of PN-transition systems, which are precisely those step transition systems gene

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Van de Steene, G. C., and P. A. M. Van Hoof. "Infrared observations of candidate post-AGB transition objects." Symposium - International Astronomical Union 180 (1997): 372. http://dx.doi.org/10.1017/s0074180900131468.

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In our search for new obscured PN, candidates were selected from the IRAS PSC based on their infrared colors that are typical for PN. These PN candidates were observed in the radio. On average 20 % of the objects were detected (Van de Steene & Pottasch: 1993, A&A 274, 895; 1995, A&A 299, 238). Optical spectroscopy showed that the PN candidates detected in the radio have emission line spectra typical of PN (Van de Steene et al. 1996a A&AS 118, 243; 1996b A&AS in press).

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Villaver, Eva, Letizia Stanghellini, Arturo Manchado, Guillermo García-Segura, and Alvio Renzini. "The Effects of Transition Time on the Populations of Post-AGB Stars, and on the Nebular Evolution." Symposium - International Astronomical Union 209 (2003): 133–34. http://dx.doi.org/10.1017/s0074180900208322.

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We show how the different assumptions on the transition time (the time lag between the superwind quenching at the AGB and the illumination of the Planetary Nebula [PN]) reflect into very different theoretical outcomes, both in the characteristics of the stellar remnants, and in the evolution of the nebular shells.We use a Monte Carlo simulation of post-AGB stars with a set of assumptions on the transition time, to show the effect on the resulting location of the stars on the HR diagram, and on the derived core mass distributions.We have also performed numerical simulations of the PN formation

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Klos, Mariel. "The transition from PN to EN." Clinical Nutrition 21 (August 2002): 121–23. http://dx.doi.org/10.1016/s0261-5614(02)80022-x.

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Yamamoto, Takafumi, Takeshi Yajima, Zhi Li, et al. "Pressure-Induced Collapse Transition in BaTi2Pn2O (Pn = As, Sb) with an Unusual Pn–Pn Bond Elongation." Inorganic Chemistry 60, no. 4 (2021): 2228–33. http://dx.doi.org/10.1021/acs.inorgchem.0c02989.

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6

Hurley, Edward, Valerie Zabala, Joan M. Boylan, Philip A. Gruppuso, and Jennifer A. Sanders. "Hepatic Gene Expression During the Perinatal Transition in the Rat." Gene Expression 19, no. 1 (2019): 1–13. http://dx.doi.org/10.3727/105221618x15293258688953.

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During the immediate postnatal (PN) period, the liver, with its role in energy metabolism and macromolecule synthesis, plays a central role in the perinatal transition. Using RNA microarrays and several complementary computational analyses, we characterized changes in hepatic gene expression in the rat across a developmental period starting with the late gestation fetus (embryonic day 21), and including 30 min PN, 4 h PN, 12 h PN, 1 day PN, and 1 week after birth. Following subtle changes in gene expression at the earliest PN time point, there were marked changes that occurred between 4 and 12

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Azkarate, Igor, Mikel Ayani, Juan Carlos Mugarza, and Luka Eciolaza. "Petri Net-Based Semi-Compiled Code Generation for Programmable Logic Controllers." Applied Sciences 11, no. 15 (2021): 7161. http://dx.doi.org/10.3390/app11157161.

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Industrial discrete event dynamic systems (DEDSs) are commonly modeled by means of Petri nets (PNs). PNs have the capability to model behaviors such as concurrency, synchronization, and resource sharing, compared to a step transition function chart or GRAphe Fonctionnel de Commande Etape Transition (GRAFCET) which is a particular case of a PN. However, there is not an effective systematic way to implement a PN in a programmable logic controller (PLC), and so the implementation of such a controller outside a PLC in some external software that will communicate with the PLC is very common. There

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Kohoutek, L. "New and Misclassified Planetary Nebulae." Symposium - International Astronomical Union 155 (1993): 36. http://dx.doi.org/10.1017/s0074180900169980.

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This fourth supplementary list to the CGPN (Perek, Kohoutek, 1967) contains 81 new objects (Table 1) which were published mainly between 1987 and 1990. We did not include as new PN those objects, which are in a transition phase between AGB and PN (no emission lines), and possible post-PN namely objects having central stars on the evolutionary way to WD and without nebulae. The possible pre–PN are summarized in a separate incomplete list as an Appendix to Table 1.

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Zhao, Yi, Shiva Kant, Pravin Kesarwani, et al. "MODL-02. GLIOMA ORGANOID MODEL PHENOTYPICALLY RECAPITULATES KEY ASPECTS OF MALIGNANT TRANSFORMATION IN GLIOBLASTOMA." Neuro-Oncology 24, Supplement_7 (2022): vii291. http://dx.doi.org/10.1093/neuonc/noac209.1130.

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Abstract Glioblastoma (GBM) displays extensive intra-tumoral heterogeneity, serving as a major obstacle for effective treatment. The identification of molecular subtypes offered promise for personalized treatment regimens in GBM, however, it has seen been determined these subtypes are reflective of intra- rather than inter-tumoral heterogeneity, with proneural (PN) and mesenchymal (MES) subtypes corresponding to the infiltrative edge and peri-necrotic core of a tumor, respectively. Further, plasticity between subtypes has been identified, with PN-to-MES transition being described as a mode of

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Bongini, Lorenzo, Luca Melli, Vincenzo Lombardi, and Pasquale Bianco. "Transient kinetics measured with force steps discriminate between double-stranded DNA elongation and melting and define the reaction energetics." Nucleic Acids Research 42, no. 5 (2013): 3436–49. http://dx.doi.org/10.1093/nar/gkt1297.

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Abstract Under a tension of ∼65 pN, double-stranded DNA undergoes an overstretching transition from its basic (B-form) conformation to a 1.7 times longer conformation whose nature is only recently starting to be understood. Here we provide a structural and thermodynamic characterization of the transition by recording the length transient following force steps imposed on the λ-phage DNA with different melting degrees and temperatures (10–25°C). The shortening transient following a 20–35 pN force drop from the overstretching force shows a sequence of fast shortenings of double-stranded extended

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Ravi, R., A. P. Singh, A. M. S. Richards, R. M. Humphreys, L. Decin, and L. M. Ziurys. "PO and PN in the Envelope of VY Canis Majoris: Elucidating the Chemistry and Origin of Phosphorus." Astrophysical Journal Letters 971, no. 2 (2024): L43. http://dx.doi.org/10.3847/2041-8213/ad6660.

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Abstract The J = 5.5 → 4.5 and J = 5 → 4 transitions of PO and PN, respectively, have been imaged in the envelope of hypergiant star VY Canis Majoris (VY CMa) using the Atacama Large Millimeter/submillimeter Array with angular resolutions of 0.″2 and 1.″5 and data from the Submillimeter Telescope of the Arizona Radio Observatory. These maps are the first high-fidelity images of PO and PN in a circumstellar envelope. Both molecules are primarily present in a spherical, star-centered region with a radius ∼60 R * (0.″5), indicating formation by LTE chemistry and then condensation into grains. PN,

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Nishigandha, Kharde* Ajit Tuwar Megha Salve. "Nutritional Support In Critical Care: The Role Of Parentral Nutrition." International Journal of Pharmaceutical Sciences 2, no. 11 (2024): 249–54. https://doi.org/10.5281/zenodo.14040050.

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Parenteral nutrition (PN) therapy provides essential nutrients intravenously to patients unable to receive enteral nutrition due to various clinical conditions. This review aims to summarize the current evidence and guidelines for PN therapy. Key aspects covered include-Indications and contraindications, Nutrient composition and formulation, Vascular access and complications management, Metabolic and electrolyte monitoring, Pediatric and geriatric considerations, Transition to oral/enteral nutrition. Recent advances in PN therapy, such as standardized protocols and omega-3 fatty acid supplemen

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Yang, Yuhai, Xiaodong Liu, and Wei Lu. "Improvement of Scheduling Optimization of Cyber-Physical Systems Based on Petri Net and Intelligent Algorithm." Symmetry 17, no. 4 (2025): 487. https://doi.org/10.3390/sym17040487.

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Cyber-physical systems need more intelligent decision-making methods. To address this issue with respect to incomplete process models and inefficient scheduling, we have previously proposed a new method called Petri-nets-adaptive ant colony optimization (PN-AACO). This method targets small-scale job shops with shared resource limits. These shops require symmetric job designs for resource sharing but have asymmetric job processing times. PN-AACO uses Petri net symmetry at edge nodes but faces a problem. Its marking–transition pheromone index mechanism causes state space explosion from Petri net

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Percus, Ora E. "Phase transition in one-dimensional random walk with partially reflecting boundaries." Advances in Applied Probability 17, no. 3 (1985): 594–606. http://dx.doi.org/10.2307/1427121.

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We consider an asymmetric random walk, with one or two boundaries, on a one-dimensional lattice. At the boundaries, the walker is either absorbed (with probability 1–ρ) or reflects back to the system (with probability p).The probability distribution (Pn(m)) of being at position m after n steps is obtained, as well as the mean number of steps before absorption. In the one-boundary case, several qualitatively different asymptotic forms of Pn(m) result, depending on the relationship between transition probability and the reflection probability.

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Zhou, Liyuan, Åsa M. Hallquist, Mattias Hallquist, et al. "A transition of atmospheric emissions of particles and gases from on-road heavy-duty trucks." Atmospheric Chemistry and Physics 20, no. 3 (2020): 1701–22. http://dx.doi.org/10.5194/acp-20-1701-2020.

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Abstract. The transition, in extent and characteristics, of atmospheric emissions caused by the modernization of the heavy-duty on-road fleet was studied utilizing roadside measurements. Emissions of particle number (PN), particle mass (PM), black carbon (BC), nitrogen oxides (NOx), carbon monoxide (CO), hydrocarbon (HC), particle size distributions, and particle volatility were measured from 556 individual heavy-duty trucks (HDTs). Substantial reductions in PM, BC, NOx, CO, and to a lesser extent PN were observed from Euro III to Euro VI HDTs by 99 %, 98 %, 93 %, and 57 % for the average emis

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Kaang, Shinyoung, Jaepyoung Cho, Seungjai Kim, Changwoon Nah, and Choon Tack Cho. "Friction and Wear of Rubber Compounds Containing Powdered Polynorbornene Vulcanizate." Journal of Polymer Engineering 18, no. 1-2 (1998): 83–100. http://dx.doi.org/10.1515/polyeng-1998-1-208.

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Abstract An investigation on the frictional performance of a natural rubber compound containing polynorbomene (PN) vulcanizate powder was carried out at various temperatures between -20°C and 60°C. The glass transition temperature, Tg, of the PN vulcanizate was 15°C. At temperatures below its Tg, the frictional coefficient of the composite significantly increased to the extent of 10% with a 10 phr addition of PN vulcanizate powder, while the wear rates were not greatly affected. The wear behavior of the composite was strongly dependent on the frictional work input.

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Qin, Zhi, Tianrui Bai та Linhua Liu. "Spectral transition properties of the A1Π-X1Σ+ system for PN". Chemical Physics Letters 782 (листопад 2021): 139028. http://dx.doi.org/10.1016/j.cplett.2021.139028.

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Ahn, Jongtae, Pyo Jin Jeon, Syed Raza Ali Raza, et al. "Transition metal dichalcogenide heterojunction PN diode toward ultimate photovoltaic benefits." 2D Materials 3, no. 4 (2016): 045011. http://dx.doi.org/10.1088/2053-1583/3/4/045011.

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19

Memaran, Shahriar, Nihar R. Pradhan, Zhengguang Lu, et al. "Pronounced Photovoltaic Response from Multilayered Transition-Metal Dichalcogenides PN-Junctions." Nano Letters 15, no. 11 (2015): 7532–38. http://dx.doi.org/10.1021/acs.nanolett.5b03265.

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Bender, Eve. "Training Directors Can Ease IMGs' Cultural Transition." Psychiatric News 40, no. 9 (2005): 40–41. http://dx.doi.org/10.1176/pn.40.9.00400040.

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21

Vadla, Raghavendra, Brett Taylor, Shunichiro Miki, Yohei Miyake, Daisuke Kawauchi, and Frank Furnari. "CSIG-27. GLIOBLASTOMA CELL STATE PLASTICITY AND THERAPEUTIC RESISTANCE IS MEDIATED BY BRD2." Neuro-Oncology 26, Supplement_8 (2024): viii69. http://dx.doi.org/10.1093/neuonc/noae165.0276.

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Abstract GBM is a highly aggressive primary brain tumor in adults, notable for its heterogeneity, high recurrence rates, and increased resistance to therapy. Multi-omics analyses have consistently identified three distinct transcriptionally defined cell states – proneural (PN), classical (CL), and mesenchymal (MES) – in IDH-wildtype GBM, with high plasticity among these states in response to diverse stimuli. Transition of GBM cells to a MES cell state is particularly associated with high invasiveness, resistance to therapy, and recurrence. However, the underlying mechanisms driving the MES tra

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Levin, Aaron. "Peer Counseling, Family Education Could Ease Vets' Transition." Psychiatric News 42, no. 11 (2007): 4. http://dx.doi.org/10.1176/pn.42.11.0004a.

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Rosack, Jim. "Continuity of Care Lost In Transition to Carveout." Psychiatric News 38, no. 11 (2003): 22. http://dx.doi.org/10.1176/pn.38.11.0022.

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24

Hirai, Takayuki, Kenzo Fukumori, Taiji Ikawa, and Tetsuya Oda. "Polyamide 6 and high molecular weight phenol novolac blend having excellent mechanical properties in humid conditions." Journal of Thermoplastic Composite Materials 32, no. 6 (2018): 778–94. http://dx.doi.org/10.1177/0892705718780195.

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Polymer blends of polyamide 6 (PA6) and phenol novolac (PN) were prepared by melt mixing. Up to 30 wt% of high molecular weight PN (HPN) or low molecular weight PN (LPN) was blended with PA6, and the physical and mechanical properties were examined. The water absorption of PA6 is inhibited by PN, and this effect is independent of the molecular weight of PN. PA6 and PN are miscible, and their blends show a single glass transition temperature ( T g) that is higher than that of PA6. HPN can enhance the T g of PA6 more efficiently than LPN because of its high T g. PA6 and the PA6/LPN blend after i

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CRIPPA, D., K. SIMON, and P. TRUNZ. "Markov Processes Involving q-Stirling Numbers." Combinatorics, Probability and Computing 6, no. 2 (1997): 165–78. http://dx.doi.org/10.1017/s0963548397002964.

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In this paper we consider the Markov process defined byP1,1=1, Pn,[lscr ]=(1−λn,[lscr ]) ·Pn−1,[lscr ] +λn,[lscr ]−1 ·Pn−1,[lscr ]−1for transition probabilities λn,[lscr ]=q[lscr ] and λn,[lscr ]=qn−1. We give closed forms for the distributions and the moments of the underlying random variables. Thereby we observe that the distributions can be easily described in terms of q-Stirling numbers of the second kind. Their occurrence in a purely time dependent Markov process allows a natural approximation for these numbers through the normal distribution. We also show that these Markov processes desc

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Hanke, Andreas. "Denaturation transition of stretched DNA." Biochemical Society Transactions 41, no. 2 (2013): 639–45. http://dx.doi.org/10.1042/bst20120298.

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In the last two decades, single-molecule force measurements using optical and magnetic tweezers and atomic force spectroscopy have dramatically expanded our knowledge of nucleic acids and proteins. These techniques characterize the force on a biomolecule required to produce a given molecular extension. When stretching long DNA molecules, the observed force–extension relationship exhibits a characteristic plateau at approximately 65 pN where the DNA may be extended to almost twice its B-DNA length with almost no increase in force. In the present review, I describe this transition in terms of th

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Stanghellini, Letizia, and Alvio Renzini. "Synthetic P-AGB Evolution." Symposium - International Astronomical Union 155 (1993): 473–76. http://dx.doi.org/10.1017/s0074180900172092.

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Extensive Montecarlo simulations of Post-Asymptotic Giant Branch (P-AGB) populations have been constructed, exploring the effects of various assumptions on synthetic H-R diagrams, luminosity functions, and inferred mass distributions. Such assumptions include the IMF, the initial mass-final mass relation, the AGB to PN transition time, the duration of the planetary nebula (PN) stage, etc. We have also investigated how the observational errors in luminosity and temperature propagate into the inferred mass distribution of the P-AGB stars.

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Binding, Samantha C., Jennifer C. Green, Zoë R. Turner, Jean-Charles Buffet, and Dermot O'Hare. "Synthesis, characterisation and redox properties of anti-bimetallic permethylpentalene complexes." Dalton Transactions 48, no. 13 (2019): 4263–73. http://dx.doi.org/10.1039/c8dt05054f.

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Moran, Mark. "Court Rejects Suit Seeking To Halt Part D Transition." Psychiatric News 41, no. 3 (2006): 27. http://dx.doi.org/10.1176/pn.41.3.0027a.

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Moran, Mark. "Medicaid Patients Suffer Most From Part D Transition Problems." Psychiatric News 41, no. 5 (2006): 1–41. http://dx.doi.org/10.1176/pn.41.5.0001a.

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Tosi, Silvia, and Ester Marini. "Tracing the Evolution of the Emission Properties of Carbon-Rich AGB, Post-AGB, and PN Sources." Astronomy 4, no. 1 (2025): 2. https://doi.org/10.3390/astronomy4010002.

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Understanding the transition from the Asymptotic Giant Branch (AGB) to the Planetary Nebula (PN) phase is crucial for advancing our knowledge of galaxy evolution and the chemical enrichment of the universe. In this manuscript, we analyze 137 carbon-rich, evolved low- and intermediate-mass stars (LIMSs) from both the Magellanic Clouds (MCs) and the Milky Way (MW). We focus on AGB, post-AGB, and PN sources, tracing the evolution of their emission through spectral energy distribution (SED) modeling. Consistent with previous studies, we observe that more evolved LIMSs exhibit cooler dust temperatu

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Wei, Yangjie, Shiliang Fang, Xiaoyan Wang, and Shuxia Huang. "Blind Estimation of the PN Sequence of A DSSS Signal Using A Modified Online Unsupervised Learning Machine." Sensors 19, no. 2 (2019): 354. http://dx.doi.org/10.3390/s19020354.

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Direct sequence spread spectrum (DSSS) signals are now widely used in air and underwater acoustic communications. A receiver which does not know the pseudo-random (PN) sequence cannot demodulate the DSSS signal. In this paper, firstly, the principle of principal component analysis (PCA) for PN sequence estimation of the DSSS signal is analyzed, then a modified online unsupervised learning machine (LEAP) is introduced for PCA. Compared with the original LEAP, the modified LEAP has the following improvements: (1) By normalizing the system state transition matrices, the modified LEAP can obtain b

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Hearn, Thomas M., and Robert W. Clayton. "Lateral velocity variations in Southern California. II. Results for the lower crust from Pn waves." Bulletin of the Seismological Society of America 76, no. 2 (1986): 511–20. http://dx.doi.org/10.1785/bssa0760020511.

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abstract A tomographic inversion of the Pn arrivals in Southern California yields new information about wave velocities and topography on the Moho discontinuity. We produce maps of Pn velocity and Pn station delays. The Pn velocities do not show the dramatic correlation with surface faults that is found for the shallower Pg arrivals (Hearn and Clayton, 1986). This implies that the lower crust and mantle are largely decoupled from the upper crust. Undoubtedly, this is due to the different responses of the brittle upper crust and the ductile lower crust to tectonic and isostatic stresses. Detach

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Cheng, Hao, Ai-Jie Mao, Si-Min Yang, et al. "Semiconductor-to-metal reconstructive phase transition and superconductivity of anti-perovskite Ca3PN under hydrostatic pressure." Journal of Materials Chemistry C 8, no. 37 (2020): 13072–78. http://dx.doi.org/10.1039/d0tc02507k.

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Cheng, Hao, Ai-Jie Mao, Si-Min Yang, et al. "Correction: Semiconductor-to-metal reconstructive phase transition and superconductivity of anti-perovskite Ca3PN under hydrostatic pressure." Journal of Materials Chemistry C 8, no. 37 (2020): 13090. http://dx.doi.org/10.1039/d0tc90190c.

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Correction for ‘Semiconductor-to-metal reconstructive phase transition and superconductivity of anti-perovskite Ca<sub>3</sub>PN under hydrostatic pressure’ by Hao Cheng et al., J. Mater. Chem. C, 2020, DOI: 10.1039/d0tc02507k.

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Stern, Julian. "Home parenteral nutrition and the psyche: psychological challenges for patient and family." Proceedings of the Nutrition Society 65, no. 3 (2006): 222–26. http://dx.doi.org/10.1079/pns2006497.

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The paper discusses the case histories of three patients who have faced the emotional implications of being initiated onto long-term parenteral nutrition (PN). In each case the patient's personal and family history, relationship to their illness and the presence or relative absence of resentments and grievances have influenced their ability to tolerate the training and the transition to home PN (HPN). In addition, the emotional importance of food and feeding from a developmental and social perspective is explored, together with the numerous psychological and social ‘losses’ experienced by all

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Jasniewicz, G., and A. Acker. "Precataclysmic Binaries in the Centre of Planetary Nebulae." Symposium - International Astronomical Union 155 (1993): 396. http://dx.doi.org/10.1017/s0074180900171852.

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We report at first on two old and large planetary nebulae (PN) of which central stars could satisfy the Ritter's criteria (1986) for being precataclysmic binaries: LoTr5 and Abell 35. Both nebulae have probably been ejected as a consequence of common-envelope evolution. A model of cataclysmic binary (CB) for the central star of Abell 35 has been tentatively attempted by Acker and Jasniewicz (1990). The nucleus of LoTr5 is a triple star (Jasniewicz et al., 1987; Malasan et al., 1991): action of a third body on the separation of the close binary could make this binary evolve into a CB (see Mazeh

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Pottasch, S. R., C. Bignell, R. Olling, and A. A. Zijlstra. "Planetary Nebulae Near the Galactic Center I: Method of Discovery and Preliminary Results." Symposium - International Astronomical Union 131 (1989): 63. http://dx.doi.org/10.1017/s0074180900137635.

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A method is described for finding planetary nebulae. Use is made of the far infrared IRAS colors and radio continuum measurements. The method is applied here to a region within 15° of the galactic center. The first results are given, including 36 new PN. The characteristics of the nebulae are described. While they are generally similar to known nebulae, the method of selection gives an emphasis to younger objects. A substantial number of the new nebulae may be in the transition phase between OH/IR stars and PN.

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Ma, Shi Hui, Cai Zhe Hao, and Xian Jiang. "Influences of Phosphorous Gettering on Minority Carrier Lifetime Distribution of Polycrystalline Silicon Wafer." Advanced Materials Research 569 (September 2012): 229–32. http://dx.doi.org/10.4028/www.scientific.net/amr.569.229.

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The influences of the phosphorus gettering in PN junction formation on the distribution of minority carrier lifetime of polycrystalline silicon wafer in solar cell production process were studied. The experimental results shows that the distribution of internal defects and impurities in polycrystalline silicon wafer significantly impact on the effectiveness of the phosphorus gettering during preparation of PN junction through the phosphorus diffusion technology. Especially when the impurities were transition metal elements, it caused a large difference of the phosphorus gettering effectiveness

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Lehmann, Christine. "Legislation Aims to Hasten Transition To Electronic Health Information System." Psychiatric News 39, no. 16 (2004): 8. http://dx.doi.org/10.1176/pn.39.16.0390008b.

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Moran, Mark. "Lawsuit Challenges Medicare Part D Transition Plan For Dual Eligibles." Psychiatric News 40, no. 24 (2005): 1–26. http://dx.doi.org/10.1176/pn.40.24.0001a.

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Periac-Arnold, Lucinda. "Experimental Physiology: Reflections on the transition to Gold Open Access." Physiology News, Spring 2024 (April 4, 2024): 13. http://dx.doi.org/10.36866/pn.133.13.

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Zervas, Chris E., and Robert S. Crosson. "Pn observation and interpretation in Washington." Bulletin of the Seismological Society of America 76, no. 2 (1986): 521–46. http://dx.doi.org/10.1785/bssa0760020521.

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abstract The travel-time characteristics of Pn waves in the state of Washington were investigated using regional earthquakes as seismic sources and stations of the state-wide University of Washington telemetered network as receivers. There is a significant difference in upper mantle velocity between eastern Washington (8.20 ± 0.02 km/sec) and western Washington (7.79 ± 0.02 km/sec). Modifications of the time-term method were used to find the dependence of P velocity on distance and azimuth to the source. Pn velocity in eastern Washington depends on the distance to the source, implying a veloci

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Cárdenas, Mónica W. Blanco, Roberto Vázquez, Hans Ulrich Kaeufl, et al. "Exploring the transition into an asymmetric planetary nabulae." Proceedings of the International Astronomical Union 12, S323 (2016): 363–64. http://dx.doi.org/10.1017/s1743921317001211.

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AbstractWe present studies using different observational techniques, along different frequencies, aiming to resolve and investigate jets, outflows, as well as compact and innermost regions of asymmetric planetary nebulae (PNe) and objects in transition to PN. All the information gathered allow us to explore the kinematics and other important properties of the structures that play a crucial role in the shaping of complex PNe morphologies, in particular, we explore the role of disks/tori as collimating engine of extreme axisymmetric PNe.

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Clegg, R. E. S. "Abundances in Planetary Nebulae." Symposium - International Astronomical Union 131 (1989): 139–56. http://dx.doi.org/10.1017/s0074180900137726.

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Good progress has been made since the last Symposium on the determination of planetary nebulae (PN) abundances. Notable features for modern abundance determinations include the availability of good collision strengths and transition probabilities (reviewed by C. Mendoza (1983) at the last meeting - IAU Symp.103), the use of the IUE & IRAS satellites to obtain UV & IR line fluxes, and the availability of modern sensitive detectors enabling measurements both of faint extra galactic nebulae and of very weak abundance-indicator lines in nearby bright nebulae. The impact of IUE on PN studie

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Ratajczak, Marek. "TRANSITION OF NEW POLITICAL SYSTEM IN THE LIGHT OF INSTITUTIONAL ECONOMICS." Prace Naukowe Uniwersytetu Ekonomicznego we Wrocławiu, no. 493 (2017): 9–21. http://dx.doi.org/10.15611/pn.2017.493.01.

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Bettegowda, A., O. V. Patel, J. Yao, J. J. Ireland, and G. W. Smith. "242 POST-TRANSCRIPTIONAL REGULATION OF JY-1 mRNA ABUNDANCE DURING THE BOVINE OOCYTE-TO-EMBRYO TRANSITION." Reproduction, Fertility and Development 18, no. 2 (2006): 229. http://dx.doi.org/10.1071/rdv18n2ab242.

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Oocyte-expressed genes play key roles in folliculogenesis and early embryonic development. The function of JY-1, a novel gene specifically expressed in bovine oocytes and early embryos, is unknown. We previously reported the expression pattern of JY-1 mRNA during meiotic maturation and early embryogenesis. The objective of this study was to elucidate the post-transcriptional regulation of JY-1 mRNA during oocyte maturation and early embryogenesis. For investigation of changes in length of JY-1 transcripts during the oocyte-to-embryo transition, total RNA isolated from germinal vesicle (GV) ooc

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Ishibashi, S. "Magnetoresistive effect in transition region of PN junction and its application circuits." Journal of the Magnetics Society of Japan 11, no. 2 (1987): 429–32. http://dx.doi.org/10.3379/jmsjmag.11.429.

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Ishibashi, S. "Magnetoresistive Effect in Transition Region of PN Junction and Its Application Circuits." IEEE Translation Journal on Magnetics in Japan 3, no. 3 (1988): 263–69. http://dx.doi.org/10.1109/tjmj.1988.4563687.

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Qin, Z., J. M. Zhao, and L. H. Liu. "Energy levels, transition dipole moment, transition probabilities and radiative lifetimes for low-lying electronic states of PN." Journal of Quantitative Spectroscopy and Radiative Transfer 227 (April 2019): 47–56. http://dx.doi.org/10.1016/j.jqsrt.2019.02.002.

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