gebhart/patrepeval huggingface dataset:
Arabidopsis gls Mutants and Distinct Fd-GOGAT Genes: Implications for Photorespiration and Primary Nitrogen Assimilation (1998)

Ferredoxin-dependent glutamate synthase (Fd-GOGAT) plays a major role in photorespiration in Arabidopsis, as has been determined by the characterization of mutants deficient in Fd-GOGAT enzyme activity (gls). Despite genetic evidence for a single Fd-GOGAT locus and gene, we discovered that Arabidopsis contains two expressed genes for Fd-GOGAT (GLU1 and GLU2). Physical and genetic mapping of the gls1 locus and GLU genes indicates that GLU1 is linked to the gls1 locus, whereas GLU2 maps to a different chromosome. Contrasting patterns of GLU1 and GLU2 expression explain why a mutation in only one of the two genes for Fd-GOGAT leads to a photorespiratory phenotype in the gls1 mutants. GLU1 mRNA was expressed at the highest levels in leaves, and its mRNA levels were specifically induced by light or sucrose. In contrast, GLU2 mRNA was expressed at lower constitutive levels in leaves and preferentially accumulated in roots. Although these results suggest a major role for GLU1 in photorespiration, the sucrose induction of GLU1 mRNA in leaves also suggests a role in primary nitrogen assimilation. This possibility is supported by the finding that chlorophyll levels of a gls mutant are significantly lower than those of the wild type when grown under conditions that suppress photorespiration. Both the mutant analysis and gene regulation studies suggest that GLU1 plays a major role in photorespiration and also plays a role in primary nitrogen assimilation in leaves, whereas the GLU2 gene may play a major role in primary nitrogen assimilation in roots.
Comparison of perturbation theories for rough-surface scattering (1988)

Rayleigh–Rice perturbation theory is compared with the more rigorously derived perturbation theory based on the extinction theorem (or extended boundary condition) for the case of Dirichlet boundary conditions. Numerical calculations for a sinusoidal surface profile show that the two theories give identical results when carried out to high order. This is true even when the two series do not seem to converge numerically. Numerical convergence of the two series is found in several cases, including some cases in which the Rayleigh hypothesis is invalid. For surfaces of arbitrary shape, the two perturbation series appear superficially to differ at third and higher order. It is shown, however, that a reciprocity transformation of one series makes it identical to the other through fifth order. Finally, it is shown that reciprocity holds in both perturbation theories, establishing analytically the equivalence of the two theories at least through fifth order. These results are surprising given the limited regime of validity for the Rayleigh hypothesis compared with the extinction theorem. They are useful in that they justify the use of perturbation formulas obtained from the Rayleigh hypothesis in lieu of the more complicated formulas obtained from the extinction theorem. While these results do not establish the identity of the two perturbation methods to all orders or settle questions as to their convergence, they do provide some theoretical clues to the nature of these problems.
Signaling alternatives in a wireless ATM network (1997)

The world of wireless telecommunications is rapidly changing. The capabilities of wireless networks are improving at a steady pace. This paper presents two possible protocols for implementing mobility for wireless users in an asynchronous transfer mode (ATM) network. The vision of the authors is of one "wireless ATM telecommunications network" that is capable of supporting a variety of today's applications with room to grow for advanced applications of the future. We first visit database architectures that can support mobility in a wireless ATM network. We then discuss one of two signaling architecture alternatives, the "overlay signaling", for overlay support of mobile users in the ATM-based wireless telecommunications network. "Overlay signaling" aims at minimizing the modification needed to the existing ATM protocols. We then describe a native "migratory signaling" approach that further integrates wireless and wireline users into one global wireless ATM network at the expense of requiring some modifications to the existing ATM protocols. A performance analysis of the proposed signaling architecture alternatives is also presented. We conclude by pointing out some challenges in merging ATM with wireless telecommunications.
ChemInform Abstract: Absolute Structure of Panaxytriol. (2002)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Polo-like kinase 1 independently controls microtubule-nucleating capacity and size of the centrosome (2020)

Centrosomes are composed of a centriolar core surrounded by a pericentriolar material (PCM) matrix that docks microtubule-nucleating γ-tubulin complexes. During mitotic entry, the PCM matrix increases in size and nucleating capacity in a process called centrosome maturation. Polo-like kinase 1 (PLK1) is recruited to centrosomes and phosphorylates PCM matrix proteins to drive their self-assembly, which leads to PCM expansion. Here, we show that in addition to controlling PCM expansion, PLK1 independently controls the generation of binding sites for γ-tubulin complexes on the PCM matrix. Selectively preventing the generation of PLK1-dependent γ-tubulin docking sites led to spindle defects and impaired chromosome segregation without affecting PCM expansion, highlighting the importance of phospho-regulated centrosomal γ-tubulin docking sites in spindle assembly. Inhibiting both γ-tubulin docking and PCM expansion by mutating substrate target sites recapitulated the effects of loss of centrosomal PLK1 on the ability of centrosomes to catalyze spindle assembly.
Design of a New and Viscosity Independent Autonomous Inflow Control System (2017)

Abstract Breakthroughs of water and/or gas in production wells may have direct consequences for the production rates and overall field recovery factors. Multiple technologies have recently been developed to autonomously control inflow from the reservoir. Common to all these technologies is that new limitations are introduced which may have a negative impact on the well. This paper presents the design process for the next generation inflow control system and introduces new requirements for such completions. Traditional Passive Inflow Control Devices (ICD) are designed to act in a preventive manner by setting up a somewhat more even inflow profile along the reservoir section and thereby delay the breakthrough of gas or water. More recently, several new initiatives have been presented which will operate autonomously and try to choke back unwanted production. Common to all these technologies is that viscosity differences are used to identify the flowing fluid phases. Viscosity differences between the reservoir fluids are therefore mandatory for these to work. In this work the design process has been given an operational focus and the following requirements for the next generation autonomous inflow control devices have been defined: easy to install as an integrated part of the downhole completionrobust in design and functionalitysecures complete clean-up of mud and completion fluidsindependent of fluid viscositynegligible pressure drop during normal productionallows back-flow of fluids In this paper a new design is proposed for the next generation autonomous inflow control valve which is independent on differences in fluid viscosities. The proposed valve blocks, or restricts, production of unwanted water or gas, and re-opens for production if oil comes back. It can be designed to stop water/gas production at a predetermined WC/GOR. Furthermore, the valve ensures efficient clean-up along the full length of the reservoir section and is insensitive to exposure to mud, particles and filtercake. The valve will not restrict any future well operations and can be designed with a fail-safe option. The new design of autonomous inflow control systems represents a great technological improvement which will ensure robust, economical and fail safe design as well as removal of typical operational envelopes necessary for traditional technologies.
A transmission bandwidth control scheme for DS/SS systems in the presence of high-power periodical partial-band interference (2002)

Proposes and investigates a scheme of controlling transmission bandwidth and its power spectral density using two spreading sequences in order to improve performance of DS/SS systems in the presence of high-power periodical partial-band interference, such as severe interference due to ISM (industrial, science and medical) items for a wireless LAN.
Combined Effect of Slot Injection, Effusion Array and Dilution Hole on the Heat Transfer Coefficient of a Real Combustor Liner: Part 2—Numerical Analysis (2010)

Due to the higher cooling requirements of novel combustor liners a comprehensive understanding of the phenomena concerning the interaction of hot gases with different coolant flows plays a major role in the definition of a well performing liner. A numerical study of a real engine cooling scheme was performed on a test article replicating a slot injection and an effusion array with a central large dilution hole. Geometry consists of a rectangular cross-section duct with a flat plate comprised 272 holes arranged in 29 staggered rows (d = 1.65 mm, Sx/d = 7.6, Sy/d = 6, L/d = 5.5, α = 30 deg); a dilution hole (D = 18.75 mm) is located at the 14th row. A detailed experimental survey has been performed on this test article making possible to compare both predicted adiabatic effectiveness and heat transfer coefficient. The study has a twofold objective. On one hand it aims to assess the accuracy of standard industrial CFD analysis in the prediction of heat transfer on the hot side of realistic effusion cooled plates, and, on the other hand, it allows to better understand the structure of flow field, not investigated with experiments. Steady state RANS calculations have been performed on 3D computational domain with a full explicit discretization of effusion holes, with a sensitivity to standard two-equation turbulence models. Numerical results have pointed out a large dependence on effusion velocity ratio and, despite the well known deficiency of eddy viscosity models in the prediction of film effectiveness, CFD results have shown an excellent agreement with experiments in the prediction of hot side heat transfer coefficient. The entity of local heat transfer augmentation due to gas-jets interaction and its dependence on jets velocity ratio were predicted with very satisfactory agreement. The increase of heat transfer is usually located very close to jet exits and it is mainly due to local flow acceleration and vortices whose calculation is not affected by the inaccurate jet mixing prediction of first order turbulence models. Besides the comparison with experimental data of the companion paper, an additional numerical investigation was performed to assess the effect of a variable density ratio. Obtained results point out the opportunity to scale the increase in heat transfer coefficient with effusion jets velocity ratio.
Epstein‐Barr Virus and Human Herpesvirus 8 Coinfection and Concomitant Extranodal Nasal‐Type NK/T Cell Lymphoma and Castleman Disease: Case Report (2003)

We describe a 36-year-old man uninfected with human immunodeficiency virus who had confirmed concurrent infection with Epstein-Barr virus (EBV) and human herpesvirus 8 (HHV-8) and their respective lymphoproliferative manifestations, nasal-type NK/T cell lymphoma and Castleman disease. Antibodies to HHV-8 and EBV DNA were found in plasma and peripheral blood mononuclear cells. An EBV-positive nasal-type NK/T cell lymphoma infiltrated the splenic red pulp, whereas the white pulp contained HHV-8-positive plasmablasts, as found in Castleman disease.
Lacticaseibacillus rhamnosus Impedes Growth of Listeria spp. in Cottage Cheese through Manganese Limitation (2021)

Acidification and nutrient depletion by dairy starter cultures is often sufficient to prevent outgrowth of pathogens during post-processing of cultured dairy products. In the case of cottage cheese, however, the addition of cream dressing to the curd and subsequent cooling procedures can create environments that may be hospitable for the growth of <i>Listeria monocytogenes</i>. We report on a non-bacterio-cinogenic <i>Lacticaseibacillus rhamnosus</i> strain that severely limits the growth potential of <i>L. monocytogenes</i> in creamed cottage cheese. The main mechanism underlying <i>Listeria</i> spp. inhibition was found to be caused by depletion of manganese (Mn), thus through competitive exclusion of a trace element essential for the growth of many microorganisms. Growth of <i>Streptococcus thermophilus</i> and <i>Lactococcus lactis</i> that constitute the starter culture, on the other hand, were not influenced by reduced Mn levels. Addition of <i>L. rhamnosus</i> with Mn-based bioprotective properties during cottage cheese production therefore offers a solution to inhibit undesired bacteria in a bacteriocin-independent fashion.
Role of Nitrogen Atoms in Reduction of Electron Charge Traps in Hf-Based High- $\kappa$ Dielectrics (2007)

<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> Effects of nitrogen incorporation on suppression of electron charge traps in Hf-based high- <formula formulatype="inline"><tex>$\kappa$</tex></formula> gate dielectrics have been studied by first-principles calculations, focusing on interactions between N atoms and electrons trapped at oxygen vacancies <formula formulatype="inline"><tex>$(V_{\rm O}{\hskip0.2pt}\hbox{'s})$</tex></formula>. Our total energy calculations revealed that the formation energy of a doubly occupied state of <formula formulatype="inline"><tex> $V_{\rm O}$</tex></formula> is significantly increased in <formula formulatype="inline"><tex>$\hbox{HfO}_{x} \hbox{N}_{y}$</tex></formula> compared to that in <formula formulatype="inline"><tex>$\hbox{HfO}_{2}$</tex></formula> . This clearly indicates that the electron charge traps at <formula formulatype="inline"><tex>$V_{\rm O}{ \hskip0.2pt}\hbox{'s}$</tex></formula> are considerably suppressed by N incorporation. </para>
Optical Coherence Tomography Features of Endogenous Aspergillus Endophthalmitis Secondary to HIV Infection (2022)

OCT findings of this case show that ocular aspergillosis may present with disruption of the inner retinal layers and sparing of the outer retina and choroid, suggesting that <i>Aspergillus</i> may reach the eye through the retinal circulation.
Evidence of Multiple Electrohydrodynamic Forces Acting on a Colloidal Particle near an Electrode Due to an Alternating Current Electric Field (2005)

Total internal reflection microscopy was used to monitor the elevation of 4-7.5 mum diameter particles near an electrode in response to an oscillating electric field with amplitude up to 8.5 kV/m. The media were 0.15 mM electrolyte solutions of HNO(3), NaHCO(3), and KOH, and the frequency band was 40 Hz to 10 kHz. Polystyrene-sulfonate particles were used in bicarbonate and KOH solutions, while polystyrene-amine particles were used in nitric acid. At frequencies less than 500 Hz, large oscillations in elevation at the driving frequency with small superimposed Brownian excursions were observed. At frequencies above 1 kHz, deterministic oscillations in elevation were negligible compared to Brownian fluctuations, which allowed transformation of histograms of elevations into potential energy profiles. The ac field drew the particle closer on average to the electrode in KOH solutions (compared to the no-field average elevation) and the field pushed the particle farther from the electrode in NaHCO(3). In HNO(3) a reversal of average height was observed at a frequency of 300 Hz at 1.7 kV/m with the particle being drawn closer to the electrode at low frequencies and being pushed away at higher frequencies. The reversal reflects two different electrohydrodynamic mechanisms. Analysis of the data at a high frequency (10 kHz) revealed a net force that was attractive in KOH and repulsive in HNO(3). This net force scaled with E(2)omega(-)(1), where E is the amplitude and omega is the frequency.
ChemInform Abstract: Synthesis and Biological Activities of Phenyl Piperazine‐Based Peptidomimetic Growth Hormone Secretagogues. (1998)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Nucleation and growth of periodic domains during electric field poling in flux-grown KTiOPO4 observed by atomic force microscopy (2006)

The domain structure of periodically poled KTiOPO4 crystals were studied on both the polar and nonpolar faces utilizing a voltage-modulated atomic force microscope. The measurements give information of domain nucleation, growth, and merging. Two different kind of overpoling behaviors have been observed depending on the magnitude of the applied field.
Fiberoptic Fluorescence Detection Of Low Level Porphyrin Concentrations In Occult Metastases Of Lymph Nodes (1989)

The newest developments in the evaluation of fluorescence detection in photodynamic therapy deal with the ability to distinguish tissue autofluorescence from that of injected photosensitizers. The ability to make this distinction as well as detect fluorescence slightly above background emanating from occult metastases is paramount for the diagnosis of disease. The delivery of light to excite and detect background fluorescence as well as photosensitizer fluorescence in tissues has been accomplished using two HeNe lasers emitting at 632.8 nm and 612 nm delivered through a single quartz fiber optic. Chopping at different frequencies, contributions of fluorescence may be separated. Fluorescence is picked up via a 400 micron quartz fiber optic positioned appropriately near the target tissue. Extraction procedures to quantitate Photofrino II concentration in tissues correlated with fluorescence measurements from instrumentation developed for in vivo fluorimetry were applied for the detection of low drug levels in occult metastases of the lymph nodes. These techniques have been initially applied to detect low levels of drug in DRA mice bearing the SMT-F tumor, which has been extensively studied in our laboratory. The data show the ability of the techniques to detect very low levels of porphyrin in the tumors after low, non-therapeutic doses of injected photosensitizer. The Pollard rat prostatic adenocarcinoma (PA-III) model was chosen for this study because of its characteristic pattern of metastases involving only ipsilateral lymph nodes. Early studies on this lymph node model have shown the ability of the detection device to measure low levels of drug in non-palpable occult metastases in the nodes. The findings show that the detection of small numbers of metastatic cells is possible (&lt;100 cells) with injected DHE doses of 0.25 mg/kg.
Chemical–mechanical properties of tribofilms and their relationship to ionic liquid chemistry (2016)

Hardness as a function of indentation depth for tribofilms formed from ZDDP and N_DEHP ionic liquid. Superimposed on the data is the corresponding phosphate chain length information acquired from XANES.
An Improved Simulation for Interpreting Temperature Logs in Water Injection Wells (1982)

Abstract An improved simulation for temperature logs (TL's) in water injection wells is described. Improvements based on the reduction of assumptions used by previous investigators are demonstratedby comparison of field data and simulator results showing excellent agreement of TL profiles over the entire well depth. Initial work with the simulator has demonstrated the need for different operational procedures for definite TL surveys in mature wells (those having received significant long-term injection) as compared with young wells. The utility of short-period hot water (SPHW) injection just preceding shut-in as an injection profile amplifying scheme has been investigated in depth through the TL simulator. Finally, sensitivity studies have been run to identify the most important TL parameters and to develop guidelines for improved profiling.
Effect of Derivatives of 3-(&beta;-Aminoethyl)-1,2,4-Triazole on the Histamine H<sub>1</sub>- and H<sub>2</sub>-Receptors (1977)

Derivatives of 3-(β-aminoethyl)-1,2,4-triazole similar to histamine have been resynthesized and studied. Four well-known effects of histamine have been considered (the contractions of an isolated guinea pig terminal ileum, dog gastric acid secretion, contractile frequency of an isolated guinea pig right atrium, blood pressure lowering effect in cats). Newly synthesized compounds IEM-813 and IEM-759 exerted some selective effect on H1-and H2-receptors: IEM-813 showed greater affinity for gut-isolated H1-receptors than for stomach and atrium H2-receρtors, while IEM-759 mainly influenced H2-receptors. Accordingly, the influence of 1,2,4-triazole analogues on H1- and H2-receptors is subject to structural demands.
Effect of Ceftobiprole Treatment on Growth of and Toxin Production by Clostridium difficile in Cecal Contents of Mice (2011)

Ceftobiprole and ceftobiprole medocaril did not promote growth of or toxin production by Clostridium difficile in mouse cecal contents, whereas ceftazidime, cefoxitin, ceftriaxone, cefotaxime, and ertapenem did. The relatively low propensity of ceftobiprole to promote C. difficile was attributable to inhibitory activity against C. difficile and sparing of anaerobic microflora.
Electronic spectra of praseodymium trifluoride solutions in molten alkali metal fluorides (2015)

The electronic absorption and reflectance spectra of Pr(III) ions in molten alkali metal fluorides have been studied. For electronic transitions in the series LiF → NaF → KF → CsF, a long-wavelength shift is observed (nephelauxetic effect). The intensity of the hypersensitive transition 3 H 4 → 3 P 2 (ΔJ = 2) depends on the covalence of the bonds in PrF3- 6 complex species and on their symmetry. The intensity of non-hypersensitive transitions depends only on the symmetry of complex groups.
Electrical Properties of the Ice/Solid Interface (1997)

The electrical properties of ice−metal and ice−dielectric (SiO2) interfaces were investigated using a field effect transistor technique applied to ice. This technique allows us to measure the initial electric surface charge, the surface conductivity, the mobilities of the charge carriers, and the screening length of the electric charge near the interface. It was found that the surface conductivity depends nonlinearly on the bias applied to the surface and varies from 1.5 × 10-10 ohm-1 to 3 × 10-10 ohm-1 as the bias changes between ±1 V. Application of a bias voltage irreversibly changes the conductivity and surface charge of ice. The surface charge can be negative or positive within the limits of ±1 × 10-4 C/m2. We measured the mobilities of negative and positive surface charge carriers at a temperature of −10 °C: μ- = (3 ± 0.5) × 10-7 m2/(Vs), and μ+ = (1.2 ± 0.3) × 10-7 m2/(Vs). The high mobility of the negative charge carriers indirectly indicates that the molecular structure of ice surface differs from that of the bulk. An upper limit to the estimated screening length of the electrical charge near the ice−metal interface at −10 °C is 2 nm.