15 research outputs found
Diagnosing herbicide drift and carryover injury in potatoes
No full textBulletin no. 737 Moscow, Idaho :University of Idaho, College of Agriculture, Agricultural Experiment Station, 1992-09-02. Author(s): C. V. Eberlein, L. C. Haderlie, J. C. Whitmore, and M. J. Guttler
Friends of the Library Guest Lecture: Author S.C. Gwynne
No full textCampus EventsNew York Times bestselling author S. C. Gwynne discusses his books "Rebel Yell: The Violence, Passion, and Redemption of Stonewall Jackson" and "Empire of the Summer Moon: Quanah Parker and the Rise and Fall of the Comanches" in a two part lecture.Angelo State UniversityFriends of the Porter Henderson Library and West Texas CollectionASU History Departmen
prohibited without the written consent of the copyright owner. Title: Strength of glass eroded by round particles
No full textAbstract: The failure stress of borosilicate glass, eroded by Zirblast B205 under various sandblasting conditions, has been studied. A comparison is made with the results obtained previously with sharp particles and with an erosion model. Residual stresses are measured to understand their interaction with failure stress. Etching is studied as a way to remove these residual stresses. A simulation of sandblasting damage is made by using Vickers indentation, to control the damage introduced in the glass surface. Conclusion: a) Strength behaviour of AF45 eroded by round particles is the same as AF45 eroded by sharp particles although erosion behaviour is different. b) The failure stress is proportional to the kinetic energy of the particle: �f � U � kin; � (-0.1) is smaller than the theoretical one (-0.22). c) An erosion threshold appears, reducing the amount of residua
Review Article: Analysis of the transpiration cooling of the thin porous plate in a hot laminar convective flow; author(s): c. Trevino, A. Medina
No full textSALT project: preliminary physical and mineralogical characterization of Alpine sulphates for geological and geotechnical modeling
No full textThe excavation of underground infrastructures in geological sequences containing sulphates may cause swelling, water weakening, creep and karst. All these phenomena have been observed in tunnels for decades, but related technical problems still remain. This is especially true for geologically complex domains as Alpine environments, where the mechanical behviour of sulphates needs to be evaluated in relation to the structural complexity of the fracture network and of the 3D geometries of the orogenic context. This study, that is developed in the framework of the SALT project, a multi scale and interdisciplinary investigation of sulphate salts in the Alpine region, proposes a description of the main features of outcropping sulphates in Western Alps, providing useful preliminary information to afford technical issues related to sulphates during the realization of infrastructures in the Alps. © 2024 The Author(s).C. Caselle, S.M.R. Bonetto, A. Paschetto, E. Costa,
Department of Earth Science, University of Turin, Italy
P. Mosca, G. Frasca, D. Vianello
IGG-CNR, Italy
A. Ramon Tarragona, E. Alonso Perez De Agreda
Universitat Politècnica de Catalunya - Barcelona Tech, Spain
P. Baud
EOST Strasbourg, FrancePostprint (author's final draft
Nat.Lab. Unclassified Report UR 823/98
No full textSpin-coating, one of Philips' widespread wet-chemical coating technologies, is sensitive to substrate inhomogeneities. That leads sometimes to coating imperfections that are much larger than their causes
AUTHENTICATION OF NUCLEAR MATERIAL ASSAYS MADE WITH IN-PLANT INSTRUMENTS*
No full textThis paper develops a general approach Energy Agency (IAEA) authentication of for International Atomic nuclear material assays made with In-plant instruments under facility operator control. The IAEA is evaluating the use of in-plant instruments as a part of international safeguards at large bulk-handling facilities, such as reprocessing plants, fuel fabrication plants, and en-richment plants, One of the major technical pr~blems associated with IAEA use of data from In-plant instruments is the need to show that there has been no tampering with the measurements. Two fundamentally di;ferent methods are discussed that can be used by IAEA inspectors to independently verify (or authenti-cate) measurements made with in-plant instruments. Method 1, called external authentication, uses a protected IAEA measure-r,lenttechnique to compare in-plant Instrument resu?ts with IAEA results. Metnod 2, called Internal authentication, uses pro-tected IAEA standards, known physical constants, and special test procedures to determine the performance characteristics of the In-plant instrument. The importance of measurement control *Work performed under the US Program of Technical Support t
High frequency heart rate variability is associated with sensitivity to affective touch
No full textPublisher Copyright: © 2024 The Author(s)C-tactile afferents (CTs) are a class of unmyelinated, mechanosensitive nerve fibre that respond optimally to skin temperature, slow moving touch typical of a caress. They are hypothesised to signal the rewarding value of affiliative tactile interactions. While CT firing frequency is positively correlated with subjective ratings of touch pleasantness, trait differences in sensitivity to the specific hedonic value of CT targeted touch have been reported. Inter-individual differences in vagally mediated, high frequency heart rate variability (HF-HRV) have been linked to variation in visual social cognition. Thus, the aim of the present study was to examine the relationship between resting state HF-HRV and sensitivity to socially relevant CT targeted touch. 58 healthy participants first had a 5-minute electrocardiogram. They then rated the pleasantness of 5 randomly presented velocities of robotically delivered touch. Three velocities fell within (1, 3, 10 cm/s) and two outside (0.3, 30 cm/s) the CT optimal range. Each velocity was delivered twice. On a group level, affective touch ratings were described by a negative quadratic function, with CT optimal velocities rated as more pleasant than slower and faster speeds. Simple regression analysis confirmed participants’ HF-HRV was significantly predicted by the quadratic curve fit of their touch ratings, with higher HF-HRV associated with a better quadratic fit. These findings indicate that, in line with previous observations that higher HF-HRV is associated with enhanced sensitivity to visual social cues, trait differences in autonomic control could account for previously reported individual differences in CT sensitivity.Peer reviewe
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Radar scattering by aggregate snowflakes
No full textThe radar scattering properties of realistic aggregate snowflakes have been calculated using the Rayleigh-Gans theory. We find that the effect of the snowflake geometry on the scattering may be described in terms of a single universal function, which depends only on the overall shape of the aggregate and not the geometry or size of the pristine ice crystals which compose the flake. This function is well approximated by a simple analytic expression at small sizes; for larger snowflakes we fit a curve to Our numerical data. We then demonstrate how this allows a characteristic snowflake radius to be derived from dual wavelength radar measurements without knowledge of the pristine crystal size or habit, while at the same time showing that this detail is crucial to using such data to estimate ice water content. We also show that the 'effective radius'. characterizing the ratio of particle volume to projected area, cannot be inferred from dual wavelength radar data for aggregates. Finally, we consider the errors involved in approximating snowflakes by 'air-ice spheres', and show that for small enough aggregates the predicted dual wavelength ratio typically agrees to within a few percent, provided some care is taken in choosing the radius of the sphere and the dielectric constant of the air-ice mixture; at larger sizes the radar becomes more sensitive to particle shape, and the errors associated with the sphere model are found to increase accordingly
From Expression Pattern to Dopaminergic Survival
No full textFunding Information: Open access funding provided by FCT|FCCN (b-on). This work was supported by “Programa Operacional do Centro, Centro 2020” through the funding of the ICON project (Interdisciplinary Challenges On Neurodegeneration; CENTRO-01–0145-FEDER-000013), and by the following national funds: Foundation for Science and Technology (doctoral grant SFRH/BD/121822/2016), UBI-Santander/Totta (BID/ICI-FCS/CICS/Santander Universidades-UBI/2017) and the PPBI-Portuguese Platform of BioImaging: POCI-01–0145-FEDER-022122. Publisher Copyright: © 2023, The Author(s).C-terminal binding proteins (CtBP) are transcriptional co-repressors regulating gene expression. CtBP promote neuronal survival through repression of pro-apoptotic genes, and may represent relevant targets for neurodegenerative disorders, such as Parkinson’s disease (PD). Nevertheless, evidence of the role of CtBP1 and CtBP2 in neurodegeneration are scarce. Herein, we showed that CtBP1 and CtBP2 are expressed in neurons, dopaminergic neurons, astrocytes, and microglia in the substantia nigra (SN) and striatum of adult mice. Old mice showed a lower expression of CtBP1 in the SN and higher expression of CtPB2 in the SN and striatum compared with adult mice. In vivo models for PD (paraquat, MPTP, 6-OHDA) showed increased expression of CtBP1 in the SN and striatum while CtBP2 expression was increased in the striatum of paraquat-treated rats only. Moreover, an increased expression of both CtBP was found in a dopaminergic cell line (N27) exposed to 6-OHDA. In the 6-OHDA PD model, we found a dual effect using an unspecific ligand of CtBP, the 4-methylthio 2-oxobutyric acid (MTOB): higher concentrations (e.g. 2500 µM, 1000 µM) inhibited dopaminergic survival, while at 250 μM it counteracted cell death. In vitro, this latter protective role was absent after the siRNA silencing of CtBP1 or CtBP2. Altogether, this is the first report exploring the cellular and regional expression pattern of CtBP in the nigrostriatal pathway and the neuroprotective role in PD toxin-based models. CtBP could counteract dopaminergic cell death in the 6-OHDA PD model and, therefore, CtBP function and therapeutic potential in PD should be further explored.publishersversionpublishe
