gebhart/patrepeval huggingface dataset:
On the implementation of a 32-channel FFT-based MFSK demodulator (1994)

This paper discusses the implementation of an M-ary FSK demodulator based on the FFT process. The goal was to design an hybrid receiver where the front end is still analog up to the A/D subsystem (I and Q), the rest being entirely digital. A digital implementation offers many advantages over an analog counterpart, e.g. SAW decoders, such as flexibility and improved dynamic range. The paper discusses the design and implementation of a 32-channel 8-FSK FFT-based demodulator where the signal bandwidth is in the excess of 10 MHz.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Dynamic Cell Clustering in Cellular Multi-Hop Networks (2006)

This paper proposes, examines and compares different algorithms for dynamic cell clustering in cellular multi-hop networks. The basic idea is to balance load among different cells by creating cell clusters dynamically. For that purpose, it is distinguished between centralized and decentralized heuristics, which both are compared with results of a numerical optimization. At first, the evaluation is performed based upon a graph-theoretical network model. In a second step, an implementation of the decentralized approach in ns-2 is used to analyze and prove the protocol's behavior and feasibility in a more realistic environment
<title>Acoustic, fluorescent diagnosis of malignant lesions using HAT-D01 and ATX-S10</title> (1994)

We have synthesized approximately 700 kinds of porphyrin derivatives and studied their side chain structures and affinities for tumor tissues. On the basis of these studies, a tumor localizing photo-chlorine photosensitizer named ATX-S10 has been synthesized for PDT and fluorescent diagnosis of malignant lesions. A non-photosensitive fluorescent diagnostic agent named HAT-D01 has also been synthesized. Both derivatives have the fluorescence near 680 nm that is far from the auto-fluorescence of biological tissue. For detection of tumor tissue, we have developed a new device that can pick up 670 - 680 nm fluorescence selectively and convert the intensity of fluorescence to the sound. By using this simple new device after ATX- S10, HAT-D01 administration we could detect well the malignant lesions.
Use of a new alginate film test to study the bactericidal efficacy of the high-level disinfectant ortho-phthalaldehyde (2005)

The sodium alginate film efficacy was reproducible between repeats. Inactivation results depended upon the concentration of OPA, contact time, the presence of an organic load and the bacterial genera.
Failure analysis of plastic packaged optocoupler light emitting diodes (2004)

Failure mechanisms in plastic packaged optocouplers have been investigated. The high failure rate of the optocouplers, specifically the reverse bias leakage current of the light emitting diodes (LEDs), was found to be moisture-related. Using scanning electron microscopy coupled with energy dispersive X-ray microanalysis, a significant concentration of copper was detected on the surface of failed LEDs, possibly migrated from the copper leadframe. By applying infra-red photoemission microscopy it was found that bandgap emission was associated with the reverse leakage path in the area of the pn junction of the LEDs.
MEDICAL SCIENCES & RESEARCH (1952)

Journal Article MEDICAL SCIENCES & RESEARCH Get access Observations on the General Effects of Injury in Man, with Special Reference to Wound Shock R. T. Grant & E. B. Reeve . London : His Majesty's Stationary Office , 1951 . (Medical Research Council Special Report Series No. 277.) xiii + 51 pages; 22 × 15 cm. 8s. 6d H. N. Green H. N. Green Search for other works by this author on: Oxford Academic PubMed Google Scholar British Medical Bulletin, Volume 8, Issue 4, 1952, Page 396, https://doi.org/10.1093/oxfordjournals.bmb.a074248 Published: 01 April 1952
Sorption of vapors of some organic liquids on soil humic acid and its relation to partitioning of organic compounds in soil organic matter (1988)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSorption of vapors of some organic liquids on soil humic acid and its relation to partitioning of organic compounds in soil organic matterCary T. Chiou, Daniel E. Kile, and Ronald L. MalcolmCite this: Environ. Sci. Technol. 1988, 22, 3, 298–303Publication Date (Print):March 1, 1988Publication History Published online1 May 2002Published inissue 1 March 1988https://pubs.acs.org/doi/10.1021/es00168a010https://doi.org/10.1021/es00168a010research-articleACS PublicationsRequest reuse permissionsArticle Views279Altmetric-Citations62LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
Metabolism of anandamide by COX‐2 is necessary for endocannabinoid‐induced cell death in tumorigenic keratinocytes (2009)

Nonmelanoma skin cancer is the most prevalent cancer in the United States with approximately 1.25 million new cases diagnosed each year. Cyclooxygenase-2 (COX-2) expression is commonly elevated in these and other epithelial tumors. Cyclooxygenases metabolize arachidonic acid to prostaglandins, which promote growth and survival of tumor cells. COX-2 also metabolizes endocannabinoids forming prostaglandin-ethanolamides (PG-EA); however, the role of these lipid molecules in tumor cell survival is unclear. The goal of this research is to determine if the metabolic products of COX-2 contribute to endocannabinoid-induced cell death. Anandamide [also known as arachidonyl ethanolamide (AEA)] induced cell death in the COX-2 overexpressing squamous carcinoma cell line JWF2. In contrast, AEA did not initiate cell death in HaCaT keratinocytes, which express low basal levels of COX-2. Resistance to AEA-mediated cell death in HaCaT cells was reversed by overexpressing COX-2 in these cells. Next, ELISA assays were carried out to identify prostaglandins involved in AEA-mediated cell death. D-type prostaglandins were predominantly formed in AEA-exposed JWF2 cells although significant increases in E- and F-type prostaglandins were also seen. Cells were then treated with various prostaglandins or PG-EA to determine the contribution of each to AEA-induced cell death. PGD(2) and PGD(2)-EA were found to be cytotoxic to JWF2 keratinocytes and the PGD(2) dehydration products, PGJ(2) and 15-deoxy Delta(12,14) PGJ(2), were also potent inducers of cell death. These results suggest that AEA selectively induces cell death in tumorigenic keratinocytes due to COX-2 overexpression and the resulting metabolism of AEA to cytotoxic prostaglandins.
Analysis of bittorrent-like protocols for on-demand stored media streaming (2008)

This paper develops analytic models that characterize the behavior of on-demand stored media content delivery using BitTorrent-like protocols. The models capture the effects of different piece selection policies, including Rarest-First and two variants of In-Order. Our models provide insight into transient and steady-state system behavior, and help explain the sluggishness of the system with strict In-Order streaming. We use the models to compare different retrieval policies across a wide range of system parameters, including peer arrival rate, upload/download bandwidth, and seed residence time. We also provide quantitative results on the startup delays and retrieval times for streaming media delivery. Our results provide insights into the optimal design of peer-to-peer networks for on-demand media streaming.
Detecting the Enterotoxigenicity of <i>Staphylococcus aureus</i> Strains (1974)

An optimal sensitivity plate method for examining large number of staphylococcal strains for production of the known enterotoxins (A-E) is presented. Small volumes of relatively concentrated enterotoxin are produced by the semi-solid agar, cellophane-over-agar, or sac culture techniques. Detection of the enterotoxin in the supernatant fluid is accomplished with the optimal sensitivity plate method. In this method small plastic petri dishes (50 mm) were used for a modified Ouchterlony of high sensitivity.
C‐6 Glioma Growth in Rats: Suppression with a β‐Adrenergic Agonist and a Phosphodiesterase Inhibitor (1980)

Rat C-6 glioma possesses a beta-adrenergic receptor which, when activated, raises intracellular levels of cyclic adenosine monophosphate (cAMP) in cultured C-6 glioma cells. The present study shows that growth of C-6 glioma is suppressed in rats treated with the beta-adrenergic agonist isoproterenol. Addition of papaverine, a cAMP phosphodiesterase inhibitor, to the treatment schedule augments this effect. Pharmacological agents that elevate intracellular cAMP levels may retard the growth of neural tumors in vivo.
Posterior chamber pseudophakia. (1982)

Anatomically, the most physiological type of implant is that of the posterior chamber of the eye. After a brief historical review of these implants, two models differing by their loops are compared, these being either in the form of a J with narrow extremities or in the form of a C. The latter model possesses definite advantages. Firstly, the point of pressure on the lens capsule is less concentrated, reducing the pressure exerted by the loops and thus avoiding rupture of the zonular ciliaris, Secondly, contact in the form of an are prevents movement of the implant around its axis, a factor favorizing capsule slipping. Thirdly, the improved pressure distribution of the loops resulting from their greater flexibility also prevents the "windscreen wiper syndrome", providing improved stability of the implant. The technique employed avoids all contact taking place with the endothelium. The upper loop is placed in position after closure of the incision. Results in 1532 cases were very positive, and studies are currently being conducted with an implant with four loops in which the optic is within the posterior chamber, and which could be positioned after intracapsular extraction. A system of irrigation-aspiration is described which employs a fine curved canula that is easier to manage and permits improved cleaning of the capsule. Emphasis is placed on the need for narrow, deep, corneal sutures to reduce postoperative astigmatism.
Synchronous activity of two people's prefrontal cortices during a cooperative task measured by simultaneous near-infrared spectroscopy (2011)

The brain activity during cooperation as a form of social process is studied. We investigate the relationship between coinstantaneous brain-activation signals of multiple participants and their cooperative-task performance. A wearable near-infrared spectroscopy (NIRS) system is used for simultaneously measuring the brain activities of two participants. Each pair of participants perform a cooperative task, and their relative changes in cerebral blood are measured with the NIRS system. As for the task, the participants are told to count 10 s in their mind after an auditory cue and press a button. They are also told to adjust the timing of their button presses to make them as synchronized as possible. Certain information, namely, the "intertime interval" between the two button presses of each participant pair and which of the participants was the faster, is fed back to the participants by a beep sound after each trial. When the spatiotemporal covariance between the activation patterns of the prefrontal cortices of each participant is higher, the intertime interval between their button-press times was shorter. This result suggests that the synchronized activation patterns of the two participants' brains are associated with their performance when they interact in a cooperative task.
Anion-Incorporation Model Proposed for Interpreting the Interfacial Physical Origin of the Faradaic Pseudocapacitance Observed on Anodized Valve Metals—with Anodized Titanium in Fluoride-Containing Perchloric Acid as an Example (2010)

With anodized titanium in fluoride-containing perchloric acid solution as an example in the present Article, the physical origin of the faradaic pseudocapacitance C(0) frequently observed in electrochemical impedance spectroscopy (EIS) spectra at low frequencies was interpreted for the first time by the incorporation/insertion of some electrolyte anions (i.e., F(-)-ions in this work) into the oxide film under the electric field during film growth. It was shown that the emergence of the faradaic pseudocapacitive behavior not only indicates a significant incorporation of anions into the oxide films but also reflects the arrival of them at the metal/oxide interface. The anion incorporation/transfer process was depicted with a modified point-defect model and simulated by a blocking, restricted finite-length diffusion impedance model (which has been widely used for studying the ion-insertion electrodes). The fast inward migration of the incorporated electrolyte species, along with the accumulation of them at the metal/film interface (due to the blocking effect of this interface), is responsible for the low-frequency capacitance behavior revealed by a vertical capacitive line in EIS spectra at low frequencies for anodically growing oxide films on valve metals. Many related published results for anodized valve metals (such as Ti, Bi, Ta, Al, etc.) are in good accordance with the model predictions. This work also suggests that the electrochemical method for the preparation of F(-)-doped TiO(2) thin film materials should be an easy, low-cost, and even more effective one to be used.
A TCAM Index Scheme for IP Address Lookup (2006)

The rapidly increasing number of hosts on the Internet has caused a significant growth of the number of entries in the routing table, which greatly exacerbates the pressure on TCAM space requirement. In this paper, we propose a novel lookup algorithm: TCAM index scheme (TIS) for IP lookup. The algorithm fully considers the discrepancies among different parts of the prefix tree, and divides the whole prefix tree into several different sub-trees. For each sub-tree, only a single prefix will be stored in the TCAM, while the information of other prefixes (in the sub-tree) is preserved in the correlated SRAM. Hence, the space demand for TCAM is extremely reduced. Meanwhile, bitmap compression is utilized to maximize the compression ratio and minimize average SRAM requirement. Viable implementations on software and hardware plane respectively are also provided. The simulation result shows that for a real-world IPv4 routing table containing 190k prefixes, our scheme can realize line-speed lookup with only 40k 72 bits TCAM entries and 1 MB SRAM. The compression ratio is even higher under IPv6 routing table. What's more, updating is more effective than traditional TCAM-based methods.
ChemInform Abstract: Synthesis of Dimethyl Carbonate from Ethylene Carbonate and Methanol Using TS‐1 as Solid Base Catalyst. (1997)

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.
Reactions of Hydrocarbons in Electrical Discharges. (1941)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReactions of Hydrocarbons in Electrical Discharges.Charles L. Thomas, Gustav. Egloff, and J. C. MorrellCite this: Chem. Rev. 1941, 28, 1, 1–70Publication Date (Print):February 1, 1941Publication History Published online1 May 2002Published inissue 1 February 1941https://doi.org/10.1021/cr60089a001RIGHTS & PERMISSIONSArticle Views152Altmetric-Citations21LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (4 MB) Get e-Alerts Get e-Alerts
A natural peptide with NMDA inhibitory activity reduces tonic pain in the formalin model (1997)

The aim of this study was to assess whether a natural peptide, histogranin, isolated from chromaffin cells and possessing NMDA receptor inhibitory activity, could reduce tonic pain. Rats received intrathecal injections of the stable analog [Ser1]histogranin (SHG), prior to induction of the formalin response. SHG markedly suppressed the second tonic phase of the formalin response compared with saline vehicle. A U-shaped dose-response curve was obtained. SHG had no effect on phase 1 acute pain responses. These findings indicate that SHG acts in a similar fashion as other, non-peptide, NMDA antagonists in suppressing tonic, but not acute pain. The presence of the natural peptide in chromaffin cells may contribute to the analgesic effects of adrenal medullary implants.
Recombinant human prolactin protects against irradiation-induced myelosuppression. (2005)

Prolactin is a multifunctional hormone that exerts many separate functions and acts as an important connection between the endocrine and immune systems. There are increasing researches implicating the role of prolactin in hematopoiesis. Enhanced erythropoiesis in pregnant women and direct erythropoietic effects in vitro of plasma either from pregnant or lactating mice have been reported. Furthermore, regression of erythroblastic leukemia has been observed in a significant number of rats after hypophysectomy. In this study, the effects of recombinant human prolactin (rhPRL) on hematopoiesis were assessed in irradiated mice. Mice were treated with rhPRL for five consecutive days after exposure to a lethal dose or a sub-dose irradiation. Prolonged survival rate and increased erythropoiesis were observed in the irradiation-induced myelosuppressive mice. It was concluded that rhPRL might act on erythropoiesis and could be a potential candidate for the treatment of irradiation-induced myelosuppresion in clinic.
Molecular Assembly in Ordered Mesoporosity:  A New Class of Highly Functional Nanoscale Materials (2000)

Assembly of organized molecular structures in ordered mesoporosity has shown to be a very powerful approach to synthesize novel functional nanoscale materials. This approach allows rational design of a wide range of material properties, such as pore dimension, surface chemistry, stereochemistry, spatial distribution of functionality, etc. This paper discusses molecular conformations and assembly mechanisms and illustrates the principles involved in fabricating sophisticated molecular structures in the pore channels. First, an introduction highlights the important progress in synthesizing and understanding ordered mesoporous materials and in incorporating functional molecules and groups in these mesoporous materials. Next, the molecular conformations of simple alkyl chains are discussed as related to chain lengths and pore geometry. The pore size, as well as the uniformity of the porosity, can affect how the long-chain molecules are assembled. Homogeneous molecular layers can be formed in 10 nm pores. Smaller pore sizes cause pore clogging and chain entanglement. Larger pore sizes increase the degree of pore irregularity and produce disordered multilayer coating. Molecules with intermediate chain lengths form better molecular layer structures. Detailed mechanisms of monolayer formation are studied, and a stepwise growth model is proposed. The step-growth mechanism is due to the surface roughness of the pore channels and is believed to be universal in forming “monolayers” involving surfaces that are not atomically smooth. Finally, the development of multifunctional nanoporous materials is described. Examples include multifunctionalized catalysts, hierarchical size-and-shape selective nanoporous materials with tunable micropatterns and microcavities. The assembly of multifunctional groups and structures will allow us to develop sophisticated nanoscale materials with “enzyme mimic” and “biomimic” properties.
Structural models for the protein family characterized by gamete surface protein Pfs230 of<i>Plasmodium falciparum</i> (2005)

Ps230 is the largest representative of a 10-member family of proteins found in all Plasmodium species. The family is defined by partially conserved, cysteine-rich double domains that are approximately 350 aa in length and have one to three predicted disulfide bridges in each half. In Plasmodium falciparum, the most dangerous human malaria, Pf12 is the smallest member of the family, comprising just one double domain. Pfs230, with 7 double domains, and Pfs48/45 and Pfs47, with 1.5 double domains each, are found on the gamete surfaces and are thus potential candidates for a transmission-blocking vaccine. Fold prediction analyses of the double domains in Pfs230 reveal structural resemblance to SAG1 (surface antigen 1), a surface protein with a double beta-sandwich structure from another apicomplexan parasite, Toxoplasma gondii. Template-directed modeling onto SAG1 clearly establishes the structural link between SAG1 and Pfs230 and produces positions for the cysteines that accord with the disulfide-bonding arrangement predicted for the Pfs230 family in earlier work. A highly clustered region of polymorphisms within the second double domain in Pfs230 maps to one side of the sandwich surface. This observation suggests that this region may be functional and reinforces the validity of these molecular models for the core domains of the Pfs230 family of proteins.
Combination Fracturing/Gravel-Packing Completion Technique on the Amberjack, Mississippi Canyon 109 Field (1994)

Summary This paper describes a one-step fracturing/gravel-pack (frac-and-pack) completion procedure conducted on the BP Exploration Amberjack platform beginning in early 1992. This platform is 35 miles southwest of Venice, LA. The first four completions on this platform had an average positive skin values of 21. The goal of the frac-and-pack procedure was to reduce these skins to nearly zero. In total, 24 frac-and-pack operations were performed. Details of the fracture design, prefracture testing, fracture design and execution, and production response and a continuing optimization program are discussed. The fractures were performed with the screens in place with the gravel pack after the fracturing operation. The treatments were designed for the tip screenout technique1,2 to create wide fractures and to provide proppant loadings exceeding 8 lbm/ft2. This paper presents the trend of the declining skin values, along with a discussion of time-dependent skins. The changes in fluids, breakers, and proppants are also presented. The average skin on 14 frac-and-pack completions was 5.3. The average skin on the final eight completions was 0.2.