gebhart/patrepeval huggingface dataset:
Phosphorus-31 NMR study of rhodium poly(phosphine) nitrosyl complexes. An attempt to prepare the elusive example of a planar {MNO}10 complex containing a bent nitrosyl ligand (1980)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhosphorus-31 NMR study of rhodium poly(phosphine) nitrosyl complexes. An attempt to prepare the elusive example of a planar {MNO}10 complex containing a bent nitrosyl ligandTerry J. Mazanec, Kwoliang D. Tau, and Devon W. MeekCite this: Inorg. Chem. 1980, 19, 1, 85–91Publication Date (Print):January 1, 1980Publication History Published online1 May 2002Published inissue 1 January 1980https://pubs.acs.org/doi/10.1021/ic50203a019https://doi.org/10.1021/ic50203a019research-articleACS PublicationsRequest reuse permissionsArticle Views170Altmetric-Citations10LEARN 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
Cytogenetic findings in adult acute leukemia and myeloproliferative disorders with an involvement of megakaryocyte lineage (1990)

Cytogenetic analyses were performed on 12 adult patients with abnormal megakaryoblastic proliferation which was detected by ultrastructural cytochemical study (platelet peroxidase) and platelet-megakaryocytes-specific monoclonal antibodies (TP-80, Plt1, AN51, and KOR-77). The patients consisted of two patients with myelodysplastic syndromes (MDS), three with acute megakaryoblastic leukemia (AMKL), six with megakaryoblastic transformation in Philadelphia-positive chronic myelogenous leukemia (CML-meg-BC), and one case of chronic myeloproliferative disorder (CMPD). Among them, an inversion of the long arm of chromosome 3 [inv(3)(q21q26)] was found in one AMKL patient with a normal platelet count. Chromosome change at band 3q26 was also found in one MDS patient without thrombocythemia. Furthermore, the long arm of chromosome 13, where rearrangements in myelofibrosis are clustered (13q12----q22) was seen in one MDS patient. Trisomoy of chromosome 19 was found in one AMKL patient and three CML-meg-BC patients. These findings indicate that cytogenetic abnormalities involving 3q26, 13q, and trisomy 19 are associated with hematologic neoplasia with megakaryocytic lineage in adult patients, although these abnormalities were not related to the survival of the patients. During the period of this study, two acute myelogenous leukemia patients (AML-M2 and AML-M5b) with chromosome rearrangements at band 3q21 and thrombocythemia were found, indicating that chromosome abnormality at band 3q21 is related to quantitative platelet dysfunction, whereas that at 3q26 is related to hematologic malignancies with a proliferation of megakaryocytic lineage.
Initial experience on the application of quantitative tests for ultrasound quality control in Mexican hospitals (2021)

Ultrasound is one of the most widely used medical imaging modalities. In Mexico there are official norms that regulate the use of diagnostic ultrasound; however, these guidelines do not specify the type of tests that must be performed to evaluate the optimal and constant performance of ultrasound equipment. Based on protocols from international organizations, a quality control manual was developed to evaluate the following characteristics: mechanical integrity, image uniformity, maximum penetration depth, distance measurement precision, spatial resolution, and dead zone. Subsequently, 4 GE Voluson Ultrasound Systems equipment were evaluated with 12 transducers of different geometries, from a third-level hospital in Mexico City. In total, 11 failures were found during the mechanical inspection, 1 in the uniformity test, 4 in the distance accuracy evaluation, 3 in the spatial resolution test, and 6 in the dead zone test. The results of this work demonstrated that quantitative methods provide information that is related to physical characteristics, which can contribute to reduce subjectivity in the performance of quality control tests of diagnostic ultrasound equipment. Also demonstrates the importance of the routine application of a quality control protocol.
SAFE: a deep-learning-based software for catch-control of small-scale fishing boats in Chile (2022)

This paper presents SAFE, a prototype system for supporting the fish landings control of small-scale fishing boats in Chile. SAFE is a modern solution for fishery inspection that automatically discriminates fish species using machine learning. Here, we present a version of SAFE that classifies five target pelagic fish species in Chile: anchovy, Chilean jack mackerel, hake, mote sculpin, and sardine. The system has two stages; the first detects and segments all fish appearing in an image. These segmented images then feed the second stage, which perform species classification. A database of approximately 266 images from these five fish species was constructed for training, validation, and testing purposes. For the fish detection stage, we exploited transfer learning to train Mask R-CNN architectures, an instance segmentation model. As for the fish species classification stage, we exploited transfer learning to train ResNet50 and VGG16 deep learning architectures. Results show that SAFE achieves between 90% and 96.3% macro-average precision (MP) when classifying the five fish species mentioned above. The best architecture, composed of a Mask R-CNN-based detector and a VGG16-based classifier, achieves an MP of 96.3%, which could process a single fish as quick as 16.67 FPS, and one whole 1920x1080-pixel image as quick as 2 FPS.
Relaxed stability condition for polynomial fuzzy system: Non-quadratic Lyapunov function approach (2013)

In this paper, relaxed stability of polynomial fuzzy system is considered. Proposed relaxed stability condition is based on the non-quadratic Lyapunov function (NQLF). Since the condition that contains the time derivative of the fuzzy weighting function (FWF) cannot be casted into linear matrix inequality (LMI) condition, various researches arbitrarily set the bound of its magnitude. To solve this problem, in this paper, the stability condition is directly calculated without setting the bound of magnitude of the time derivative of the FWF, and the condition is casted into sum-of-square (SOS) condition. Finally, to prove the superiority of proposed method, simulation example is given.
Three-dimensional labyrinthine acoustic metamaterials (2013)

Building upon recent theoretical and experimental work on two-dimensional labyrinthine acoustic metamaterials, we design, fabricate, and characterize nearly isotropic three-dimensional airborne acoustic labyrinthine metamaterials. Our experiments on aluminum-based structures show phase and group velocities smaller than that of air by a factor of about 8 over a broad range of frequencies from 1 to 4 kHz. This behavior is in agreement with three-dimensional band-structure calculations including the first and higher bands. The extracted imaginary parts of the phase velocity are 5–25 times smaller than the mentioned real parts. This ratio is better than for most optical metamaterials but still rather favors applications in terms of sub-wavelength broadband acoustic absorbers.
Direct multichip-to-wafer 3D integration technology using flip-chip self-assembly of NCF-covered known good dies (2014)

We demonstrated surface tension-driven self-assembly and microbump bonding using NCF (non-conductive film)-covered chips with Cu/Sn-Ag microbumps for highthroughput and high-yield direct multichip-to-wafer 3D integration. The NCF is a promising candidate to completely fill gaps between fine-pitch microbumps, and is essential for realizing highly-reliable microbump-to-microbump interconnections. Here, by applying the self-assembly method with strong water surface tension, the NCF-covered chips were precisely aligned to hydrophilic assembly sites defined on host Si substrates in a face-down manner with alignment accuracies of approximately 1 μm. The self-assembled chips having Cu/Sn-Ag microbumps covered with NCF were thermally compressed to obtain electrical joints between the chips and substrate after the self-assembly process. The resulting daisy chains showed good electrical characteristics with contact resistance of 53 mΩ/joint.
Secretoneurin, a Novel Neuropeptide, Is a Potent Chemoattractant for Human Eosinophils (1998)

Secretoneurin (SN), a 33-amino acid neuropeptide, is derived from secretogranin II that is released from sensory afferent C-fibers by capsaicin. Described functions of secretoneurin include chemotaxis of monocytes and endothelial cells, and inhibition of endothelial cell proliferation. Inhibition of monocyte chemotaxis by staurosporine indicated involvement of specific signaling pathways. We have tested effects of SN, substance P (SP), and interleukin-8 (IL-8) on eosinophil migration in modified Boyden chambers including signaling mechanisms of neuropeptide and cytokine stimulation of human eosinophils. Experiments showed SN as eosinophil chemoattractant comparable in its potency to IL-8. Checkerboard analysis, usage of a specific anti–SN-antibody, and receptor desensitization experiments confirmed the chemotactic activity. Preincubation of the cells with effective concentrations of staurosporine or tyrphostin-23 showed no effect, whereas treatment with wortmannin (WTN) or 3-isobutyl-1-methylxantin (IBMX) completely blocked SN-induced migration. Additionally, experiments ruled out tyrphostin-23- and WTN-sensitive signaling pathways for SP-induced chemotaxis of eosinophils. We conclude that SN-stimulated human eosinophil chemotaxis is mediated via a unique and specific signal transduction pathway that involves activation of phosphodiesterases and WTN-sensitive enzymes, ie, phospholipase D and phosphatidylinositol-3-kinase. In contrast, we report that activation of the latter and tyrosine kinases is required for SP-induced chemotaxis of eosinophils.
Intra- and Intergeneric Similarities of Ribosomal Ribonucleic Acid Cistrons of Free-Living, Nitrogen-Fixing Bacteria (1980)

14C-labeled ribosomal ribonucleic acid (rRNA) was prepared from Azotobacter chroococcum NCIB 8002, Azotobacter paspali 8A, Azomonas agilis NCIB 8636, Azomonas insignis WR 30, Beijerinckia indica NCIB 8712, and Azospirillum brasilense ATCC 29145. These rRNA's were hybridized under stringent conditions with filter-fixed deoxyribonucleic acid from a great variety of gram-negative bacteria. Each hybrid was described by: (i) the temperature at which 50% of the hybrid was denatured, and (ii) the percent rRNA binding (amount in micrograms of rRNA duplexed to 100 µg of deoxyribonucleic acid). These data were used to construct rRNA similarity maps. The following conclusions could be drawn concerning rRNA cistron similarities. (i) Bacterial genera with free-living, aerobic, nitrogen-fixing members are very diverse and belong to different rRNA superfamilies. The present family Azotobacteriaceae is not a biological unit, and its status as a family is highly questionable. (ii) Azotobacter chroococcum, Azotobacter vinelandii, Azotobacter beijerinckii, Azotobacter paspali, Azotobacter miscellum, Azotobacter armeniae, and Azotobacter nigricans belong in the genus Azotobacter. Any synonymy of these names remains to be determined. Azomonas agilis, Azomonas insignis, and Azomonas macrocytogenes constitute independent branches, which are about equidistant from Azotobacter and section I of Pseudomonas as presented in Bergey's Manual of Determinative Bacteriology, 8th ed. Xanthomonas, Alteromonas vaga, and Alteromonas communis are located in the same rRNA superfamily. (iii) The genus Beijerinckia appears to be rather heterogeneous. Its closest relatives appear to be Xanthobacter autotrophics, "Mycobacterium" flavum, "Pseudomonas" azotocolligans, "Pseudomonas" diminuta, the authentic rhodopseudomonads, and some other organisms. These organisms belong in the same rRNA superfamily as Azospirillum, Agrobacterium, Rhizobium, Acetobacter, Gluconobacter, and Zymomonas. (iv) Derxia belongs in still another rRNA superfamily, together with Chromobacterium, Janthinobacterium, the Pseudomonas acidovorans and Pseudomonas solanacearum groups, Alcaligenes, and a few other taxa. (v) The following organisms were generically misnamed: "Azomonas insignis" ATCC 12523, "Mycobacterium" flavum 301, "Pseudomonas" azotocolligans ATCC 12417, "Pseudomonas" diminuta CCEB 513, and "Rhodopseudomonas" gelatinosa (all strains examined).
On The Impact Of Known-Key Attacks On Hash Functions (2015)

Hash functions are often constructed based on permutations or blockciphers, and security proofs are typically done in the ideal permutation or cipher model. However, once these random primitives are instantiated, vulnerabilities of these instantiations may nullify the security. At ASIACRYPT 2007, Knudsen and Rijmen introduced known-key security of blockciphers, which gave rise to many distinguishing attacks on existing blockcipher constructions. In this work, we analyze the impact of such attacks on primitive-based hash functions. We present and formalize the weak cipher model, which captures the case a blockcipher has a certain weakness but is perfectly random otherwise. A specific instance of this model, considering the existence of sets of <em>B</em> queries whose XOR equals 0 at bit-positions <em>C</em>, where <em>C</em> is an index set, covers a wide range of known-key attacks in literature. We apply this instance to the PGV compression functions, as well as to the Grøstl (based on two permutations) and Shrimpton-Stam (based on three permutations) compression functions, and show that these designs do not seriously succumb to any differential known-key attack known to date.
ChemInform Abstract: Phermomone Synthesis. Part 133. Synthesis of Both the Enantiomers of ( 3Z,9Z)‐cis‐6,7‐Epoxy‐3,9‐nonadecadiene (I), a Pheromone Component of Erannis defoliaria. (1992)

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.
Cost-constrained selection of strand diameter and number in a litz-wire transformer winding (2001)

Design of litz-wire windings subject to cost constraints is analyzed. An approximation of normalized cost is combined with analysis of proximity effect losses to find combinations of strand number and diameter that optimally trade off cost and loss. The relationship between wire size, normalized cost, and normalized loss is shown to have a general form that applies to a wide range of designs. A practical design procedure is provided, Applied to an example design, it leads to less than half the original loss at lower than the original cost, or, alternatively, under one fifth the original cost with the same loss as the original design.
Transvaginal Endoscopic Cholecystectomy in Human Beings: Preliminary Results (2008)

The transvaginal cholecystectomy is feasible, safe, and reproducible in women within a wide range of BMI. NOTES might dramatically change the way surgery will be conceived and performed in the future, as it holds the potential to abolish the historic association of surgery with pain and scars.
Supplementary motor area in speech initiation: a large-scale intracranial EEG evaluation of stereotyped word articulation (2023)

Abstract Speech production is known to engage a distributed network. The brain regions responsible for the initiation of articulation are unclear, and they would be expected to coordinate a distributed network. Using direct intracranial recordings in a large cohort, during stereotyped speech production to eliminate confounds of phonological and semantic complexity, we performed a comprehensive analysis of cortical sites engaged in speech initiation. We found that the supplementary motor area (SMA) was the earliest speech motor region to be active prior to speech onset and was active almost exclusively prior to articulation. Broadband gamma activity in the SMA was predictive of the response time of word production, predicting response time from 250 ms after stimulus onset. Neural activity in SMA began at a highly predictable time after stimulus onset and extended until speech onset. SMA activity offset coincided with ventral premotor cortex and primary motor activity onset . This suggests that the SMA may coordinate the concerted activation of motor execution cortex. Our results support the idea that SMA is a key node in the speech initiation network. Significance statement Producing speech requires coordination across multiple brain regions. One cortical region - the supplementary motor area (SMA) - has long been a candidate region to coordinate across other regions to initiate speech production. In this study, we used human intracranial recordings from patients with epilepsy to investigate the role of the SMA in initiating speech. In a picture-naming task, subjects repeated the word “scrambled” scores of times; using this condition to eliminate any linguistic confounds, we found that the SMA was consistently one of the earliest regions to activate during word production. We also uncovered the SMA’s temporally precise tuning to speech onset at the single-trial level.
Rotational Invariants for Wide-baseline Stereo (2002)

The 'wide-baseline stereo' problem, is studied in the paper. To handle the problem of affine distortion between two corresponding regions a stable method based on rotational invariants computed on normalised measurement regions is applied.
A Novel Mice Model of Catecholaminergic Polymorphic Ventricular Tachycardia Generated by CRISPR/Cas9 (2021)

Abstract Catecholaminergic polymorphic ventricular tachycardia (CPVT) has been considered as one of the most important causes of children’s sudden cardiac death. Mutations in the genes for RyR2 and CASQ2, two mainly subtypes of CPVT, have been identified. However, the mutation in the gene of TECRL was rarely reported, which could be another genetic cause of CPVT. We evaluated myocardial contractility, electrophysiology, calcium handling in Tecrl knockout (Tecrl KO) mice and human induced pluripotent stem cell-derived cardiomyocytes. Immediately after epinephrine plus caffeine injection, Tecrl KO mice showed much more multiple premature ventricular beats and ventricular tachycardia. The Tecrl KO mice demonstrate CPVT phenotypes. Mechanistically, intracellular calcium amplitude was reduced, while time to baseline of 50 was increased in acute isolated cardiomyocytes. RyR2 protein levels decreased significantly upon cycloheximide treatment in TECRL deficiency cardiomyocytes. Overexpression of TECRL and KN93 can partially reverse cardiomyocytes calcium dysfunction, and this is p-CaMKII/CaMKII dependent. Therefore, a new CPVT mouse model was constructed. We propose a previously unrecognized mechanism of TECRL and provide support for the therapeutic targeting of TECRL in treating CPVT.
Directed evolution of Escherichia coli with lower-than-natural plasmid mutation rates (2018)

Unwanted evolution of designed DNA sequences limits metabolic and genome engineering efforts. Engineered functions that are burdensome to host cells and slow their replication are rapidly inactivated by mutations, and unplanned mutations with unpredictable effects often accumulate alongside designed changes in large-scale genome editing projects. We developed a directed evolution strategy, Periodic Reselection for Evolutionarily Reliable Variants (PResERV), to discover mutations that prolong the function of a burdensome DNA sequence in an engineered organism. Here, we used PResERV to isolate Escherichia coli cells that replicate ColE1-type plasmids with higher fidelity. We found mutations in DNA polymerase I and in RNase E that reduce plasmid mutation rates by 6- to 30-fold. The PResERV method implicitly selects to maintain the growth rate of host cells, and high plasmid copy numbers and gene expression levels are maintained in some of the evolved E. coli strains, indicating that it is possible to improve the genetic stability of cellular chassis without encountering trade-offs in other desirable performance characteristics. Utilizing these new antimutator E. coli and applying PResERV to other organisms in the future promises to prevent evolutionary failures and unpredictability to provide a more stable genetic foundation for synthetic biology.
Preparation and characterization of PZT ferroelectric thin films by plasma enhanced metalorganic chemical vapor deposition (1995)

Abstract PZT thin films with a uniform distribution of components were prepared by plasma enhanced chemical vapor deposition (PECVD) using Pb(C2H5)4, Z (O-i-C4H9)4, Ti(O-i-C3H7)4, and oxygen. The crystallization of films was occure after annealing in the temperature range between 450 and 550°C under O2 ambient for 1 hr. The significant change of Pb concentration in PECVD PZT thin films was not observed in the relation to annealing temperature and time. The dielectric constant PECVD PZT thin films increased with the Ti content, showed the maximum value in the vicinity of morphotropic phase boundary (MPB) composition of PZT material, and decreased with the Ti content. The leakage current density of PZT (65/35) thin film of 180 nm in thickness was 3·37 × 10−7 A/cm2 at the applied voltage of 3 V. Remanent polarization increased with increasing of Zr content in the film and coercive field was nearly independent of the composition. The typical values of electrical properties were εr = 570, Ec = 90 kV/cm, and Pr = 19 μC/cm2 in the PECVD PZT (54/46) thin film of 220 nm in thickness.
Near-Infrared Dorsal Hand Vein Image Segmentation by Local Thresholding Using Grayscale Morphology (2007)

This paper presents a new method of dorsal hand vein images segmentation based on local thresholding using grayscale morphology. The images, captured by near- infrared CMOS cameras, have poor contrast, speckling noise and non-uniform lighting. After the preprocessing these images normalized, we use dilation and erosion operations to calculate the local thresholding and segment to get the binary images. We do experiments on 40 images effectively. Hence, the research will be significant for real-time applications using infrared vein image segmentation, such as identification systems and vein location or view for humans.
Calcium: Cytoplasmic, Mitochondria, Endoplasmic Reticulum, and Flux Measurements (2007)

Fluorescent dyes that change their spectral properties in the presence of calcium are available. They have been used to measure the changes in calcium levels which occur in cells when stimulated by a variety of agonists. Methods for measuring receptor-mediated calcium flux and for tracking calcium movement within the cell and the movement of internal calcium stores are described.
Outil de modélisation statistique des circuits analogiques et mixtes (2012)

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