gebhart/patrepeval huggingface dataset:
Multiphoton ionization of acetone clusters: metastable unimolecular decomposition of acetone cluster ions and the influence of solvation on intracluster ion-molecule reactions (1989)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMultiphoton ionization of acetone clusters: metastable unimolecular decomposition of acetone cluster ions and the influence of solvation on intracluster ion-molecule reactionsW. B. Tzeng, S. Wei, and A. W. Castleman Jr.Cite this: J. Am. Chem. Soc. 1989, 111, 16, 6035–6040Publication Date (Print):August 1, 1989Publication History Published online1 May 2002Published inissue 1 August 1989https://pubs.acs.org/doi/10.1021/ja00198a010https://doi.org/10.1021/ja00198a010research-articleACS PublicationsRequest reuse permissionsArticle Views253Altmetric-Citations51LEARN 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
Coupled Bias–Variance Tradeoff for Cross-Pose Face Recognition (2011)

Subspace-based face representation can be looked as a regression problem. From this viewpoint, we first revisited the problem of recognizing faces across pose differences, which is a bottleneck in face recognition. Then, we propose a new approach for cross-pose face recognition using a regressor with a coupled bias-variance tradeoff. We found that striking a coupled balance between bias and variance in regression for different poses could improve the regressor-based cross-pose face representation, i.e., the regressor can be more stable against a pose difference. With the basic idea, ridge regression and lasso regression are explored. Experimental results on CMU PIE, the FERET, and the Multi-PIE face databases show that the proposed bias-variance tradeoff can achieve considerable reinforcement in recognition performance.
Development trends of small antennas for mobile terminals (2007)

This paper gives a brief overview on some typical development trends of the small antennas used in multi-system mobile communications terminals. The main challenge in this development has been and will be to fit all the antennas needed for up to over 10 radio systems into a small, thin handheld terminal, whose total volume should in many cases stay below 100 cm3. The increasing complexity of the mechanical structure of the terminal and addition of low-frequency UHF radio systems like DVB-H to the terminal have set additional challenges for the antenna development. However, new approaches have been found during the recent years for the implementation of mobile antennas through in-depth studies of the radiation mechanisms available in the terminals. This has made it possible to introduce antenna solutions that meet the strict size and performance requirements of the new devices. Below these new antenna solutions, which are based on the so-called non-resonant coupling elements to excite currents on the chassis of the terminal, are discussed and several application examples are presented.
Primary Structure of PLC-154 (1988)

A variety of hormones, growth factors, and other agents stimulate the hydrolysis of polyphosphoinositides by phosphoinositide-specific phospholipase C (PtdIns-PLC) (for review, see Hirasawa and Nishizuka 1985; Berridge 1986). This hydrolysis produces two second-messenger molecules, diacyglycerol, which is responsible for the activation of protein kinase C. and inositol 1,4,5-trisphosphate, which is involved in intracellular calcium homeostasis. Studies on intact cells and membrane preparations have suggested that, like adenylate cyclase, receptor-dependent activation of PtdIns-PLC may be regulated through GTP-binding proteins (for review, see Litosch and Fain 1986; Cockcroft 1987). However, a formal proof of this or any other coupling mechanism must come from reconstitution studies, after the relevant parts have first been identified. To this end, progress has been made in the characterization of PtdIns-PLC activities, a number of which have been purified to apparent homogeneity (Hofmann and Majerus 1982; Bennett and Crooke 1987; Katan and Parker 1987; Rebecchi and Rosen 1987;...
Aminotransferase‐Catalyzed Conversion of D‐Amino Acids to L‐Amino Acids (1991)

Abstract A microbial bioconversion process is described for the conversion of D‐amino acids or the corresponding racemic mixtures to L‐amino acids. The process comprises reacting a D‐amino acid or a D,L mixture of an amino acid with glucose and ammonia in the presence of an aminotransferase‐containing culture of Escherichia coli. The aminotransferase is only moderately stereoselective in converting D‐and L‐amino acids to the keto acids. The aminotransferase‐mediated conversion of α‐keto acid to L‐amino acid exhibits very high stereospecificity, thus rendering the conversion of D‐amino acids irreversible. Conversions of leucine, phenylalanine, and homophenylalanine to the corresponding L isomers are described.
Fast Sampling of Gaussian Markov Random Fields (2001)

Summary This paper demonstrates how Gaussian Markov random fields (conditional autoregressions) can be sampled quickly by using numerical techniques for sparse matrices. The algorithm is general and efficient, and expands easily to various forms for conditional simulation and evaluation of normalization constants. We demonstrate its use by constructing efficient block updates in Markov chain Monte Carlo algorithms for disease mapping.
Electromagnetic navigation diagnostic bronchoscopy for small peripheral lung lesions (2007)

The present study prospectively evaluated the diagnostic yield and safety of electromagnetic navigation-guided bronchoscopy biopsy, for small peripheral lung lesions in patients where standard techniques were nondiagnostic. The study was conducted in a tertiary medical centre on 40 consecutive patients considered unsuitable for straightforward surgery or computed tomography (CT)-guided transthoracic needle aspiration biopsy, due to comorbidities. The lung lesion diameter was mean+/-sem 23.5+/-1.5 mm and the depth from the visceral-costal pleura was 14.9+/-2 mm. Navigation was facilitated by an electromagnetic tracking system which could detect a position sensor incorporated into a flexible catheter advanced through a bronchoscope. Information obtained during bronchoscopy was superimposed on previously acquired CT data. Divergence between CT data and data obtained during bronchoscopy was calculated by the system's software as a measure of navigational accuracy. All but one of the target lesions was reached and the overall diagnostic yield was 62.5% (25-40). Diagnostic yield was significantly affected by CT-to-body divergence; yield was 77.2% when estimated divergence was <or=4 mm. Three pneumothoraces occurred and chest drainage was required in one case. Electromagnetic navigation-guided bronchoscopy has the potential to improve the diagnostic yield of transbronchial biopsies without additional fluoroscopic guidance, and may be useful in the early diagnosis of lung cancer, particularly in nonoperable patients.
LOW MOLECULAR WEIGHT NITROGENOUS COMPONENTS AND THEIR INFLUENCE ON THE STABILITY OF BEER FOAM (1992)

Addition of low molecular weight nitrogenous components, nucleoside (adenosine), nucleotide (AMP), amino acids (glutamic acid, glycine, proline and asparagine) and a tripeptide (glycylglycylglycine) had no effect on the head retention value of beer. Under such conditions of artificial manipulation of the content of low molecular weight beer nitrogenous components no correlation between the nitrogen molecular weight ratio of beer and beer head retention value was observed. Collapsed beer foam was collected and separated into soluble and precipitated fractions. Analysis of collapsed beer foam demonstrated that high molecular weight polypeptide material and isomerised α acids are concentrated in beer foam and are constituents of beer foam precipitate material. Beer foam precipitate material may be stabilised by ionic interactions between polypeptide material and isomerised α acids. Further analysis of beer and collapsed beer foam demonstrated that purine nucleosides are not concentrated in beer foam. Similarly, under conditions simulating beer dispense, amino acids are not concentrated in beer foam. Under strongly selective foaming conditions, such as those encountered in a foam tower, the hydrophobic amino acids, valine, isoleucine, leucine and phenylalanine are concentrated in beer foam.
Research methodology in NSAID monitoring: plasma concentrations of chiral drugs. (1988)

The poor concentration-efficacy correlation generally observed with chiral nonsteroidal antiinflammatory drugs administered as racemates may, in part, be the result of conclusions based on the correlation of total drug concentration (R- plus S-enantiomers) with efficacy. The disposition kinetics of the enantiomers may be stereoselective. The extent of this stereoselectivity may range from substantial for fenoprofen and ibuprofen to small or negligible for flurbiprofen, ketoprofen and tiaprofenic acid. Pathophysiological factors such as gastrointestinal residence time and age may influence the stereoselectivity. Thus basic and clinical pharmacological data generated without considering stereoselectivity may be misleading.
Assessment of the developmental potential of frozen-thawed mouse oocytes (1994)

Mouse oocytes were cryopreserved by a protocol shown previously to minimize damage to the zona pellucida and cytoskeletal system. After thawing, the incidence of fertilization did not differ from that in control groups of oocytes, and after fertilization, the ability of the fertilized frozen-thawed oocytes to develop to the blastocyst stage in vitro was only slightly less (77%) than that of the controls (87 and 89%). Transfer of frozen-thawed and fertilized oocytes after their culture to the blastocyst stage in vitro resulted in a lower implantation rate (46%) than for the controls (68-73%), but of the implanting embryos the same proportions in experimental and control groups survived to yield viable fetuses. In contrast, transfer after culture in vitro to the 2- to 4-cell stage resulted in similar implantation rates for control and frozen-thawed fertilized oocytes (70-84%), but the spontaneous abortion rate was higher for the embryos derived from frozen-thawed oocytes. Overall the cumulative survival rate for frozen oocytes transferred at the 2-cell stage (36%) was better than after transfer at the blastocyst stage (30%), but both were less than for the transfer at any stage of the control oocytes (47-55%). The cumulative survival of cryopreserved oocytes to viable fetuses was 30-40% less than that of the control oocytes. These results are compared with those from previous studies and the main remaining obstacles to completely successful cryopreservation are identified.
마을숲 보전 사업에 대한 마을 주민의 참여가능성 -남원시 2개 마을의 경우 (2013)

이 연구는 마을 주민이 마을숲 보전 사업에 참여할 가능성에 영향을 미치는 인자를 분석하는 데 목적이 있다. 성별, 연령, 출신지, 부의 수준, 마을숲 이용 빈도, 마을조직 대표 경험과 같은 주민들의 사회경제적 특성이 마을숲 보전 사업 참여가능성에 영향을 줄 것이라고 예상하였다. 설문조사를 통해 마을숲이 존재하는 두 마을에서 각각 52명, 41명의 응답을 얻을 수 있었으며, 순서화 로짓 모형을 이용하여 수집된 자료를 분석하였다. A마을에서는 마을 숲 이용 빈도가 높은 사람일수록 마을숲 보전 사업 참여가능성이 높게 나타났으며, B마을에서는 그 마을에서 태어나고 마을조직 대표 경험이 있는 사람일수록 마을숲 보전 사업 참여가능성이 높게 나타났다. 주민들의 마을숲 보전사업 참여가능성에 영향을 미치는 요인이 마을별로 다르게 나타난 이유는 마을숲 소유권으로 인한 마을 주민들의 마을숲 이용 현황과 마을숲 문화의 유무에 따라 마을숲 가치를 이해하고 있는 주민의 비율이 서로 달랐기 때문으로 판단된다. 따라서 마을숲 보전 사업에 주민들의 참여를 유도하기 위해서는 마을숲의 이용권한을 지역 주민들에게 부여하고, 마을숲을 활용한 문화행사나 교육사업 등을 통하여 마을숲에 대한 주민들의 이해도를 높이는 것이 필요하다.
Unsaturated fatty acids and viability of Helicobacter (Campylobacter) pylori (1990)

Helicobacter (Campylobacter) pylori was found to be sensitive to the toxic effects of an unsaturated fatty acid (arachidonic acid). Data are presented that support the hypothesis that exogenous catalase added to basal media enhances the growth of H. pylori by preventing the formation of toxic peroxidation products from long-chain unsaturated fatty acids.
The Antigenic Relationship between Measles, Canine Distemper and Rinderpest Viruses Studied with Monoclonal Antibodies (1986)

Monoclonal antibodies (MAbs) were used to delineate the antigenic relationship between the three morbillivirus types: measles virus (MV), canine distemper virus (CDV) and rinderpest virus (RPV). Panels of six to 31 MAbs against the haemagglutinin (H), fusion (F), nucleocapsid protein (NP), phosphoprotein (P) and matrix (M) proteins of MV and the H, F, NP and P proteins of CDV were employed. Nine strains of MV, three strains of CDV and four strains of RPV were examined by radioimmunoprecipitation assay and immune fluorescence for reactivity with the heterologous MAbs. Overall, the NP and in particular the F proteins of the morbilliviruses showed a high degree of epitopic homology; the P and M proteins showed a partial epitopic homology, with the greatest variation between the M proteins of CDV and MV; the H proteins showed a low degree of epitopic homology and then only between MV and RPV. These data indicate that the major cross-protecting antigen in heterotypic vaccination amongst morbilliviruses is the F antigen. The epitopic relationships found between morbilliviruses as identified by the MAbs were classified as follows. (i) Group-specific epitopes were present on all strains of the three morbillivirus types. (ii) Group-cross-reactive epitopes were present on only some of the strains from each morbillivirus type (these epitopes identified the presence of intratypic strain variation in all proteins of all three virus types). (iii) Type-specific epitopes, i.e. MV unique or CDV unique, were found only on the homologous morbillivirus type. (iv) CDV-RPV intertypic and MV-RPV intertypic epitopes were, respectively, epitopes shared by CDV and RPV but not with any MV strain, and epitopes shared by MV and RPV but not with any CDV strain. These cross-reactivities and type-specific reactions were obtained with the internal viral proteins (M, P and NP). The epitopes of the F proteins were mainly group-specific and no CDV-RPV or MV-RPV intertypic epitopes were found. The epitopes of the H protein were either type-specific or MV-RPV intertypic. These data support the proposed evolutionary relationship between the morbilliviruses.
Enhancing Jini's lookup service using XML-based service templates (2002)

We present an extension to Jini's lookup service. The existing lookup service has certain limitations when it comes to searching for specific services. We introduce more advanced service descriptors and a lookup service that enables flexible searching for specific services. Our proposal makes it easy to incorporate non-functional requirements, such as quality-of-service. This means that services can publish themselves with a descriptor describing their guarantees for the service they deliver. Clients will then be able to fill out a descriptor containing requirements (expectations). When the client asks a lookup service for matches based on the descriptor, only services fufilling the requirements will be returned. The advanced searching in Jini is done client-side, while we have moved it to the lookup services. This way even small devices with limited memory and computation power will be able to perform advanced searches and easier be able to find a match. The implementation utilizes XML as storage format.
Combination of surface and borehole seismic data for robust target-oriented imaging (2016)

A novel application of seismic interferometry (SI) and Marchenko imaging using both surface and borehole data is presented. A series of redatuming schemes is proposed to combine both data sets for robust deep local imaging in the presence of velocity uncertainties. The redatuming schemes create a virtual acquisition geometry where both sources and receivers lie at the horizontal borehole level, thus only a local velocity model near the borehole is needed for imaging, and erroneous velocities in the shallow area have no effect on imaging around the borehole level. By joining the advantages of SI and Marchenko imaging, a macrovelocity model is no longer required and the proposed schemes use only single-component data. Furthermore, the schemes result in a set of virtual data that have fewer spurious events and internal multiples than previous virtual source redatuming methods. Two numerical examples are shown to illustrate the workflow and to demonstrate the benefits of the method. One is a synthetic model and the other is a realistic model of a field in the North Sea. In both tests, improved local images near the boreholes are obtained using the redatumed data without accurate velocities, because the redatumed data are close to the target.
Painful neuropathy decreases membrane calcium current in mammalian primary afferent neurons (2000)

Hyperexcitability of the primary afferent neuron leads to neuropathic pain following injury to peripheral axons. Changes in calcium channel function of sensory neurons following injury have not been directly examined at the channel level, even though calcium is a primary second messenger-regulating neuronal function. We compared calcium currents (I(Ca)) in 101 acutely isolated dorsal root ganglion neurons from 31 rats with neuropathic pain following chronic constriction injury (CCI) of the sciatic nerve, to cells from 25 rats with normal sensory function following sham surgery. Cells projecting to the sciatic nerve were identified with a fluorescent label applied at the CCI site. Membrane function was determined using patch-clamp techniques in current clamp mode, and in voltage-clamp mode using solutions and conditions designed to isolate I(Ca). Somata of peripheral sensory neurons from hyperalgesic rats demonstrated decreased I(Ca). Peak calcium channel current density was diminished by injury from 3.06+/-0.30 pS/pF to 2. 22+/-0.26 pS/pF in medium neurons, and from 3.93+/-0.38 pS/pF to 2. 99+/-0.40 pS/pF in large neurons. Under these voltage and pharmacologic conditions, medium-sized neuropathic cells lacked obvious T-type calcium currents which were present in 25% of medium-sized cells from control animals. Altered Ca(2+) signalling in injured sensory neurons may contribute to hyperexcitability leading to neuropathic pain.
Introduction (1976)

Anatomy, which is a word of Greek origin, and which like its Latin equivalent dissectio means 'cutting up', originally implied the study of the disposition of the different parts of the body. The information thus obtained constituted gross or macroscopic anatomy, sometimes known as topographical anatomy, if the emphasis was more especially on topography. Modern anatomy is much wider in scope, for it deals both with the make-up of the body and with the factors on which its development and maintenance depend. It therefore comprises not only gross topographical features such as the arrangement of muscles, nerves and veins, but also microscopic anatomy or histology, which includes cytology, the name given to the specialized branch of study which deals with the organization of the individual cell. The subject also includes developmental anatomy or embryology. A further division is comparative anatomy, which is concerned with the way all living things are made. It is through comparative study that the underlying pattern of all organic structure is revealed, and in this field anatomy becomes the science of morphology.KeywordsCollagen FibreBlast CellGround SubstanceSmall LymphocyteLoose Connective TissueThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
An Electroluminescent Light-Amplifying Picture Panel (1955)

This paper describes an experimental amplifier for light which uses a photoconductive layer electrically in series with an electroluminescent phosphor layer. With the series combination excited by an alternating voltage of audio frequency; e.g., 400 cps, a low light level impinging on the photoconductor decreases its resistance sufficiently to cause a much larger light output from the phosphor. Large-area light-amplifying panels, 12 inches square, using a newly developed photoconductive CdS powder have been built. These panels are capable of producing intensified half-tone images with high resolution. The response time of these panels, determined basically by the photoconductive material, varies from 0.1 second to several seconds. New photoconductive materials offer promise of greatly increased speed. Since the photoconductors can be made sensitive to X-rays and infrared, the principles of the device may be useful for image conversion and intensification with these radiation sources.
Gastroduodenal Mucosal Injury in Patients Taking Low-Dose Aspirin and the Role of Gastric Mucoprotective Drugs: Possible Effect of Rebamipide (2010)

The present study was conducted to investigate the prevalence of mucosal injury in patients taking low-dose aspirin in Japan and examine the effect of gastric mucoprotective drugs on aspirin-related gastroduodenal toxicity. We selected 530 patients who had taken low-dose aspirin for 1 month or more after undergoing esophagogastroduodenoscopy from 2005 through 2006 at Teikyo University Hospital, Tokyo, Japan. Endoscopic records were retrospectively reviewed to determine the presence of massive bleeding and mucosal injury (ulcer or erosion). The influence of clinical factors, including co-administration of gastroprotective drugs, was also examined. Hemorrhage was observed in 25 patients (3.7%) and mucosal injury (36.2%) in 192 patients. The presence of Helicobacter pylori antibody was a significant risk factor associated with mucosal injury. Patients taking any gastroprotective drug showed a significantly lower rate of mucosal injury than those not taking these drugs. Patients taking rebamipide concomitantly with proton pump inhibitors or histamine 2 receptor antagonists had mucosal injury less frequently than those taking acid suppressants plus other mucoprotective drugs. In conclusion, these results show the possible gastroprotective effects of rebamipide, suggesting that it may be a good choice in aspirin users with gastroduodenal toxicity that is not suppressed by acid suppressants alone.
Dirac Semimetal in Three Dimensions (2012)

We show that the pseudorelativistic physics of graphene near the Fermi level can be extended to three dimensional (3D) materials. Unlike in phase transitions from inversion symmetric topological to normal insulators, we show that particular space groups also allow 3D Dirac points as symmetry protected degeneracies. We provide criteria necessary to identify these groups and, as an example, present ab initio calculations of β-cristobalite BiO(2) which exhibits three Dirac points at the Fermi level. We find that β-cristobalite BiO(2) is metastable, so it can be physically realized as a 3D analog to graphene.
1,1‘-Diisocyanoferrocene and a Convenient Synthesis of Ferrocenylamine (2000)

The new ferrocene derivative 1,1‘-diisocyanoferrocene was prepared in 50% isolated yield from the reaction of 1,1‘-diisocyanatoferrocene with formic acid followed by thermal decarboxylation and reaction with POCl3/NH(i-Pr)2. An improved synthesis route to ferrocenylamine involves lithiation of ferrocene with t-BuLi followed by reaction with α-azidostyrene and subsequent acidification.