gebhart/patrepeval huggingface dataset:
Nonlinear seismic inversion (1984)

PreviousNext No AccessSEG Technical Program Expanded Abstracts 1984Nonlinear seismic inversionAuthors: Calum MacdonaldDavid D. JacksonPaul M. DavisCalum MacdonaldUniv. of California, Los Angeles, David D. JacksonUniv. of California, Los Angeles, and Paul M. DavisUniv. of California, Los Angeleshttps://doi.org/10.1190/1.1894136 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Permalink: https://doi.org/10.1190/1.1894136FiguresReferencesRelatedDetails SEG Technical Program Expanded Abstracts 1984ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 1984 Pages: 856 publication data© 1984 Copyright © 1984 Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 24 Mar 2005 CITATION INFORMATION Calum Macdonald, David D. Jackson, and Paul M. Davis, (1984), "Nonlinear seismic inversion," SEG Technical Program Expanded Abstracts : 655-657. https://doi.org/10.1190/1.1894136 Plain-Language Summary PDF DownloadLoading ...
Sustainability Reporting and Financial Performance of Listed Consumer Goods Firms in Nigeria (2021)

The non-compliance by firms on sustainable development gave rise to climate degradation and ozone layer depletion. The resultant consequences include pollution, habitat loss, and overexploitation of species and the spread of invasive genes. Yet, very few empirical studies have examined the effects of these on corporate performance. In view of this scenario, this study assesses the effects of sustainability reporting on the financial performance of 26 listed consumer goods firms in Nigeria. The correlational research design was adopted for the study, and secondary data were collected from the annual reports and accounts of the firms for a period of 10 years (2009-2018). Multiple regression techniques used to analyse the data and diagnostic checks and post estimation tests were carried out on the data. The results show that social performance has a significant positive effect on financial performance. Similarly, results show that environmental performance has a significant positive effect on financial performance. However, results show that economic performance has a significant negative effect on financial performance. The study concludes that sustainability reporting is important to corporate financial performance. The study, among others, recommends that management should disclose more social and environmental performance activities and less economic performance activities.
The Ubiquitin-Dependent Targeting Pathway in <i>Saccharomyces cerevisiae</i> Plays a Critical Role in Multiple Chromatin Assembly Regulatory Steps (2002)

Abstract In a screen designed to isolate Saccharomyces cerevisiae strains defective for in vitro chromatin assembly, two temperature-sensitive (ts) mutants were obtained: rmc1 and rmc3 (remodeling of chromatin). Cloning of RMC1 and RMC3 revealed a broad role for the ubiquitin-dependent targeting cascade as the ubiquitin-protein ligases (E3s), the anaphase promoting complex (APC; RMC1 encodes APC5) and Rsp5p, respectively, were identified. Genetic studies linked the rmc1/apc5 chromatin assembly defect to APC function: rmc1/apc5 genetically interacted with apc9Δ, apc10Δ, and cdc26Δ mutants. Furthermore, phenotypes associated with the rmc1/apc5 allele were consistent with defects in chromatin metabolism and in APC function: (i) UV sensitivity, (ii) plasmid loss, (iii) accumulation of G2/M cells, and (iv) suppression of the ts defect by growth on glucose-free media and by expression of ubiquitin. On the other hand, the multifunctional E3, Rsp5p, was shown to be required for both in vitro and in vivo chromatin assembly, as well as for the proper transcriptional and translational control of at least histone H3. The finding that the distinctly different E3 enzymes, APC and Rsp5p, both play roles in regulating chromatin assembly highlight the depth of the regulatory networks at play. The significance of these findings will be discussed.
The Genetic Bottleneck in Vertical Transmission of Subtype C HIV-1 Is Not Driven by Selection of Especially Neutralization-Resistant Virus from the Maternal Viral Population (2011)

Subtype C human immunodeficiency virus type 1 (HIV-1C) continues to cause the majority of new cases of mother-to-child transmission (MTCT), and yet there are limited data on HIV-1C transmission. We amplified env from plasma RNA for 19 HIV-1C MTCT pairs, 10 transmitting in utero (IU) and 9 transmitting intrapartum (IP). There was a strong genetic bottleneck between all mother-infant pairs, with a majority of transmission events involving the transmission of a single virus. env genes of viruses transmitted to infants IP, but not IU, encoded Env proteins that were shorter and had fewer putative N-linked glycosylation sites in the V1-V5 region than matched maternal sequences. Viruses pseudotyped with env clones representative of each maternal and infant population were tested for neutralization sensitivity. The 50% inhibitory concentration of autologous serum was similar against both transmitted (infant) and nontransmitted (maternal) viruses in a paired analysis. Mother and infant Env proteins were also similar in sensitivity to soluble CD4, to a panel of monoclonal antibodies, and to heterologous HIV-1C sera. In addition, there was no difference in the breadth or potency of neutralizing antibodies between sera from 50 nontransmitting and 23 IU and 23 IP transmitting HIV-1C-infected women against four Env proteins from heterologous viruses. Thus, while a strong genetic bottleneck was detected during MCTC, with viruses of shorter and fewer glycosylation sites in env present in IP transmission, our data do not support this bottleneck being driven by selective resistance to antibodies.
Transmission Errors and Forward Error Correction in Embedded Differential Pulse Code Modulation (1983)

We have derived formulas for the combined effects of quantization and transmission errors on the performance of embedded Differential Pulse Code Modulation (DPCM), a source code that can be used for variable-bit-rate speech transmission. Our analysis is more general and more precise than previous work on transmission errors in digital communication of analog signals. Special cases include conventional DPCM and Pulse Code Modulation (PCM). Our main result is a signal-to-noise ratio formula in which the effects of source characteristics (input signal, codec design parameters) and the effects of transmission characteristics (modulation, channel, forward error correction) are clearly distinguishable. We also present, in computationally convenient forms, specialized formulas that apply to uncoded transmission through a random-error channel, transmission through a slowly fading channel, and transmission with part or all of the DPCM signal protected by an error-correcting code. Numerical results show how channel coding can have different effects on conventional and embedded DPCM. They also show how the binary-number representation of quantizer outputs influences performance.
Cerebral venous sinus thrombosis (2002)

Cerebral venous thrombosis (CVT) is caused by thrombosis and resultant occlusion of cerebral venous system, and its incidence rate is lower than ischemic stroke or intracerebral hemorrhage. CVT has a variety of presenting symptoms/signs and commonly poses diagnostic challenges. Its most frequent presentations are headache, symptoms with increased intracranial pressures, seizures, and any of cortical symptoms/signs. The confirmation of the diagnosis of CVT relies on the demonstration of thrombi in the cerebral veins/sinuses by relevant neuroimaging studies. Computed tomography may reveal venous thrombi, but magnetic resonance techniques with venography are more sensitive. Risk factors for CVT consisted of various thrombophilic conditions, either genetic or acquired, oral contraceptives, puerperium and pregnancy, infection, and malignancy. During the acute period, anticoagulation with heparin may be beneficial to CVT patients in spite of hemorrhages. Deteriorating cases despite full anticoagulation may benefit through local thrombolysis or thrombectomy. After the acute phase, patients remain on oral vitamin K antagonists for a variable period of time, depending on their inherent thrombotic risk. The prognosis of CVT is in general favorable.
Wide-Angle Antireflection Effect of Subwavelength Structures for Solar Cells (2007)

The angle-dependent reflectivity of several surface structures was analyzed and evaluated with the viewpoint of solar cell applications. Numerical analysis showed that a Si subwavelength structure (SWS) maintains a lower reflectivity at large incident angles than conventional light-trapping techniques such as a random pyramid texture, and that it can contribute to increasing the output power of solar cells under oblique irradiation. This wide-angle antireflection effect was demonstrated by fabricating test crystalline Si cells with several surface structures including a SWS and measuring their angle-dependent short-circuit current densities.
The induction of respiratory syncytial virus-specific cytotoxic T-cell responses following immunization with a synthetic peptide containing a fusion peptide linked to a cytotoxic T lymphocyte epitope. (1995)

Previously published work has shown that a cytotoxic T-cell epitope (CTL) representing residues 82-90 of the M2 protein of respiratory syncytial virus (RSV) is the target for a protective response against the virus. In this report, we demonstrate that a synthetic peptide representing residues 81-95, when covalently linked to a fusion peptide derived from the conserved N-terminal 19 residues of the F1 protein of measles virus efficiently primes RSV-specific CTLs in vivo following immunization without adjuvant.
Parallel and antiparallel G-DNA structures from a complex telomeric sequence (1993)

We investigated the formation in vitro of higher order structures by a DNA oligomer containing the terminal motif TGTG3TGTGTGTG3, derived from the Saccharomyces telomeric consensus, in order to (a) understand why certain cations favor the formation of parallel-stranded (G4 and G8) G-DNA structures, while others favor foldback, antiparallel structures (G'2) and (b) probe the structures of G-DNAs formed by this telomeric sequence, which is more complex than its well-studied counterparts from the protozoans oxytricha and tetrahymena. We find that dramatic switches in the formation of G4 versus G'2 structures occur in solutions of not only the group Ia cations, Li(+)-Cs+, but also in those of the group IIa cations, Mg(2+)-Ba2+. These data and the temperature-dependent formation and destruction of the different structures lend support to the kinetic scheme of Sen and Gilbert (1990), by which rapidly forming G'2 structures accumulate in highly stabilizing potassium (and strontium) solutions at the expense of the thermodynamically more stable G4 structures. Both the G4 and the G'2 complexes formed by the Saccharomyces sequence show novel structural features. Protection and interference experiments with dimethyl sulfate and potassium permanganate reveal that the core of alternating thymines and guanines within the telomeric motif plays a critical role in the stabilization of the parallel G4 structure, but not of the antiparallel G'2. Very likely, in the G4 complex, this GT core forms a novel higher order arrangement of alternating G and T quartets, the latter possibly comparable to the U quartets described by Cheong and Moore (1992) in their NMR study of the higher order structure formed by rUG4U.
A low power layered decoding architecture for LDPC decoder implementation for IEEE 802.11n LDPC codes (2008)

This paper presents a low power LDPC decoder design based on reducing the amount of memory access. By utilizing the column overlapping of the LDPC parity check matrix, the amount of access for the memory storing the posterior values is minimized. In addition, a thresholding decoding scheme is proposed which reduces the memory access by trading off the error correcting performance. The decoder was implemented in TSMC 0.18μm CMOS process. Experimental results show that for a LDPC decoder targeting for IEEE 802.11n, the power consumption of the memory and the decoder can be reduced by 72% and 24%, respectively.
REACTIONS OF PHENYL ISOTHIOCYANATE AND SULFUR WITH DIMERIC ADDUCTS: NOVEL SYNTHESIS OF THIAZOLES, THIAZOLO-[4,5-d]PYRIMIDINE AND THIAZOLO[4,5-d]-PYRIDINE DERIVATIVES (1992)

Abstract Dimeric adducts 1–3 react with phenyl isothiocyanate and sulfur to afford the thiazole derivatives 4, 12 and 14. The latter products react with different chemical reagents to afford new thiazoles and their fused derivatives which show high fungicidal and bactericidal activities.
Initial experience using histidine‐tryptophan‐ketoglutarate solution in clinical pancreas transplantation* (2004)

Early graft function and complications are comparable with HTK and UW solutions for pancreas allograft preservation.
Automated synthesis of composite BPEL4WS Web services (2005)

In this paper we propose a technique for the automated synthesis of new composite Web services. Given a set of abstract BPEL4WS descriptions of component services, and a composition requirement, we automatically generate an executable BPEL4WS process that, once deployed, is able to interact with the components to satisfy the requirement. We implement the proposed approach exploiting efficient synthesis techniques, and experiment with some case studies taken from real world applications and with a parameterized domain. We show that the technique can scale up to cases in, which the manual development of BPEL4WS composite services is not trivial and is time consuming.
Stevenel's Blue, an excellent stain for optical microscopical study of plastic embedded tissues. (1980)

Stevenel's Blue is a reliable, rapid, and clean, one-step polychromatic stain for 1 micron thick epoxy sections. The staining solution, originally used by L. Stevenel (1918) to stain human parasites, is made by adding diluted potassium permanganate (2%) to an aqueous solution of the methylene blue (1.3%) and redissolving the precipitate thoroughly, by boiling in water bath and filtering. Staining is carried out in a Coplin jar at 60 degrees C for approximately 10 minutes for tissues embedded in Epon 812 or Poly 812, or 20 minutes for tissues embedded in Spurr's medium. The sections are rinsed, air dried, and mouted in Permount. The staining solution is very stable, and does not tend to form precipitates on the tissue. The stain brings excellent histological differentiation to nuclear, cytoplasmic, and extracellular components. Incorporation of the stain by elements within each tissue varies from intense to light with a subtle gradation of intermediate shades of purple and blue tones. For most cell structures the density of the stain parallels the electron density of that structure as seen under the electron microscope. For example, nucleoli and heterochromatin stain in dark purple while euterochromatin appear in a light blue shade. In all cases, the embedding media remains unstained. The bond between Stevenel's Blue and the tissues is stable, remaining unaltered by the mounting medium. It is also resistant to time-fading.
Antitumor effect and metabolic activation of cyclophosphamide and 4-hydroperoxycyclophosphamide in the human breast carcinoma (MX-1)-nude mouse system. (1983)

The effects of cyclophosphamide (CPA) and its active form, 4-hydroperoxy-CPA, against human breast carcinoma transplanted into nude mice (BALB/c nu/nu) were evaluated in terms of the decreases of hepatic drug-metabolizing enzymes in nude mice. A human breast carcinoma, MX-1, was implanted into the subcutaneous tissue of nude mice and a drug was administered intravenously once at a dose of 0.05, 0.1 or 0.15 mmol/kg, 1 or 3 weeks after tumor inoculation. 4-Hydroperoxy-CPA was more effective than CPA as regards inhibition of tumor growth, and the difference in effect was greater when the drugs were administered 3 weeks after tumor inoculation. The activity of CPA was depressed by the decrease of the hepatic drug-metabolizing enzymes in proportion to the tumor-bearing period. Therefore, the effects of masked derivatives of CPA may correlate with the changes in drug-metabolizing activities of tumor-bearing mice. The human tumor xenografts-nude mice system is considered to be suitable for chemosensitivity tests with masked compounds.
Ionic liquids as electrolytes for nonaqueous capillary electrophoresis (2002)

Acetonitrile is a well-suited medium for nonaqueous capillary electroseparations and enables extending the range of applications of capillary electrophoresis (CE) techniques to more hydrophobic species. In this study, the dialkylimidazolium-based low temperature melting organic salts know as "ionic liquids" (ILs) are used as electrolytes. At room temperature these liquids are miscible with acetonitrile which makes it easy to use them for adjustment of analyte mobility and separation. The anionic part as well as the concentration of an IL influence the general electrophoretic mobility of the buffer system. The separation of different analytes is achieved because they become charged in the presence of ILs in separation media. There is also a possibility for a complex formation between the solute and the electrolyte which alters the mobility of the solute. A selected application of separations of phenols and aromatic acids will be discussed.
A Cost Effective Replica Simulator as a Commissioning Tool (1995)

This paper outlines the use of a low cost replica simulator at the Alkathene factory at ICI's Botany site. It describes the reasons for using a simulator to test DCS software, the role the simulator played in the project and the ways in which it contributed to the successful completion of an instrumentation upgrade project. The benefits flowing from the use of the testing simulator were estimated to at least double the total development cost with the latter being less than dollar 50,000. In addition, the simulator was used for training and it improved the acceptance of the new DCS, and now forms the basis of an effective training facility.
The importance of brain temperature in cerebral injury. (1992)

The recent finding that small variations in brain temperature can critically determine the extent of histopathological injury in animal models of brain injury has generated renewed interest in hypothermic brain protection. Whereas mild hypothermia protects the brain from ischemic and traumatic brain injury, mild hyperthermia worsens ischemic outcome. Selective brain cooling has many advantages over whole body cooling, including the elimination of harmful side effects, such as cardiac arrhythmias. In addition to the clinical issue of brain protection, manipulating brain temperature has become a powerful tool with which to investigate the pathophysiology of ischemic and traumatic brain injury. The purpose of this article is to review and discuss recent findings demonstrating the importance of brain temperature in ischemic and traumatic brain injury. Potential mechanisms by which mild hypothermia may attenuate and mild hyperthermia accentuate the detrimental consequences of brain injury are reviewed.
Oxidative stress and male infertility—a clinical perspective (2008)

Oxidative stress occurs when the production of potentially destructive reactive oxygen species (ROS) exceeds the bodies own natural antioxidant defenses, resulting in cellular damage. Oxidative stress is a common pathology seen in approximately half of all infertile men. ROS, defined as including oxygen ions, free radicals and peroxides are generated by sperm and seminal leukocytes within semen and produce infertility by two key mechanisms. First, they damage the sperm membrane, decreasing sperm motility and its ability to fuse with the oocyte. Second, ROS can alter the sperm DNA, resulting in the passage of defective paternal DNA on to the conceptus. This review will provide an overview of oxidative biochemistry related to sperm health and will identify which men are most at risk of oxidative infertility. Finally, the review will outline methods available for diagnosing oxidative stress and the various treatments available.
Electrical System Architectures for Future Aircraft (1999)

&lt;div class="section abstract"&gt;&lt;div class="htmlview paragraph"&gt;This paper addresses the fundamental issues faced in the aircraft electrical system architectures. Furthermore, a brief description of the conventional and advanced aircraft power system architectures, their disadvantages, opportunities for improvement, future electric loads, role of power electronics, and present trends in aircraft power system research will be given. Finally, this paper concludes with a brief outline of the projected advancements in the future.&lt;/div&gt;&lt;/div&gt;
Dexamethasone‐functionalized gels induce osteogenic differentiation of encapsulated hMSCs (2005)

Synthetic hydrogels represent highly controlled environments for three-dimensional culture of human mesenchymal stem cells (hMSCs). Encapsulated hMSCs are presented with a "blank" environment, and this environment can be closely controlled in order to elicit an osteogenic response. In vitro, dexamethasone is an efficient and reliable factor that leads to the osteogenic differentiation of human mesenchymal stem cells (hMSCs). The aim of this work was to develop a dexamethasone-releasing poly(ethylene glycol) (PEG)-based hydrogel scaffold to deliver dexamethasone to encapsulated cells in a sustained manner. To accomplish this goal, dexamethasone was covalently linked to a photoreactive mono-acrylated PEG molecule through a degradable lactide bond, and this molecule was covalently incorporated into the PEG hydrogel during photopolymerization. Over time, hydrolysis of the ester bonds resulted in dexamethasone release from the gel. The biological activity of the released dexamethasone was verified in monolayer cell culture and in three-dimensional culture (i.e., in the gel) by the ability of hMSCs to express osteogenic genes, including alkaline phosphatase, osteopontin, and core binding factor alpha 1, as measured using real-time reverse transcription polymerase chain reaction (RT-PCR). These studies indicate that encapsulated hMSCs are capable of osteogenic differentiation in response to released dexamethasone.
Lithium salts for advanced lithium batteries: Li–metal, Li–O<sub>2</sub>, and Li–S (2015)

The critical roles of Li-salts in lithium batteries, particularly Li–metal, Li–O 2 , and Li–S batteries, are reviewed.
Replication for a distributed multimedia system (2001)

Replicating data and services at multiple networked computers increases the service availability of distributed systems. This paper presents the design and implementation architecture of a replication mechanism for a distributed multimedia system medianode which is developed as an infrastructure to share multimedia-enhanced teaching materials among lecture groups. With the replication mechanism, medianode provides enhanced access to presentation materials in both connected and disconnected operation modes. The main contribution of this paper is the identification of new replication requirements in distributed media systems and a multicast-based update propagation mechanism by which not only the update events are signaled, but also the updated data are exchanged between replication managers.