2,656 research outputs found
Ficheler (P.)- — Achenbach Buschhutten.
No full textEstienne Pierre. Ficheler (P.)- — Achenbach Buschhutten.. In: Revue de géographie alpine, tome 41, n°2, 1953. p. 389
3-D Ultrasonic Scattering by Surface-Breaking Cracks
No full textUltrasonic scattering by cracks which break the traction-free surface of an engineering structure is of considerable interest in the field of nondestructive evaluation, especially when the crack mouth is inaccessible to direct observation. Considerable effort has been expended in obtaining solutions to the two-dimensional problem, from which much has been learned. A representative cross-section of work on the two-dimensional problem includes papers by Mendelsohn, et al. [1], Achenbach and Norris [2], Datta and Shah [3], Zhang and Achenbach [4], and Roberts [5]. However, if the crack dimensions are comparable to the width of the interrogating ultrasonic beam, the full three-dimensional problem must be considered. To this end, Budreck and Achenbach [6] investigated the scattering of elastic waves from a 3-D normal edge crack of arbitrary shape.</p
Achenbach Syndrome in Primary Care: A Case Report
No full text4 páginasParoxysmal hematoma of the fingers, or Achenbach syndrome, is a rare vascular disorder of benign course and unknown etiology. The clinical manifestations are sudden onset, paroxysmal spontaneous subcutaneous hematomas, and edema and pain in the fingers and hands. The clinical course is self-limited and does not leave permanent sequela. The diagnosis is clinical, and complementary studies are often unnecessary. We present the clinical case of a 69-year-old woman diagnosed with Achenbach syndrome in a primary care center in Colombia. © 2023 Board of Regents of the University of Wisconsin System and The Medical College of Wisconsin, Inc
Generalization of the Achenbach-Chao model for waves in non-linear hereditary media
No full textAn analogue of the Achenbach-Chao model for the case of wave propagation in non-linear hereditary elastic media is considered.</p
Phenotypic traits of phragmites australis clones are not related to ploidy level and distribution range
No full textBackground and aims: Phragmites australis is a wetland grass with high genetic variability, augmented by its cosmopolitan distribution, clonal growth form and large variation in chromosome numbers. Different ploidy levels and ecotypes differ in morphology and ecophysiological traits, and may possess different levels of phenotypic variation. The aim of this study was to quantify the natural variation in ecophysiological characteristics of P. Australis, and to explore whether differences in ecophysiological traits can be related to ploidy levels or to the geographic origin of the clones. Methodology: Fifteen clones of P. australis from Europe and Asia/Australia, representing five ploidy levels (4x, 6x, 8x, 10x and 12x), were grown in a common garden design for 119 days. Plant growth and light-saturated rate of photosynthesis (Pmax), stomatal conductance (gs), water use efficiency (WUE) and concentrations of photosynthetic pigments and mineral ions in the leaves were measured. Principal results: The growth of the plants and most ecophysiological parameters differed significantly between clones. The mean maximum shoot height varied from 0.9 to 1.86 m, Pmax from 9.7 to 27 μmol m-2 s-1, gs from 0.22 to 1.41 mol m-2s-1 and WUE from 13 to 47 μmol mol-1. The concentrations of chlorophylls did not vary significantly between clones, but the chlorophyll a/b ratio and the concentrations of total carotenoids did. The observed differences were not explained either by the ploidy level per se or by the geographic origin or phylogenetic relationships of the clones. Conclusions: Phylogeographic relationships in P. australis on a global scale do not mirror the environment where the adaptations have evolved, and high phenotypic variation among and within clones complicates comparative studies. Future studies aimed at explaining differences in plant behaviour between P. australis populations should be careful in the selection of target genotypes and/or populations, and should avoid generalizing their findings beyond the genotypes and/or populations studied. © The Authors 2012
Rivisiting Phragmites australis variation in the Danube Delta with DNA molecular techniques
No full textThe Danube delta hosts a very diverse population of Phragmites australis that has attracted the interest of generations of scientists. In this paper we focus on the genetic diversity of this population and how such variation is reflected in the morphology, cytology and physiological response of its genotypes. A crucial genetic trait that makes the P. australis population in the Danube delta a focal for the study of the evolutionary history of the genus Phragmites is its variation in chromosome numbers and ploidy levels co-existing next to each other. We review the literature from 1965 to today and explore the genetic relationships among the Romanian genotypes within the delta population, and within the Phragmites
genus, on the base of molecular data obtained from chloroplast DNA sequencing and nuclear DNA markers
(microsatellites and AFLPs). Even though cell size often increases with ploidy level, cytological variation appears not to be the only factor explaining differences in physiology and size between Romanian “fine” and “giant” common reeds. The presence of tall maternal lineages and their possibility to hybridize provides an alternative explanation to the phenotypic variation pattern observed in this region. A specifically designed study of genetic variation in the delta will reveal the genetic dynamics within this special population and the processes driving the evolution in the genus
Paul R. Achenbach
No full textPAUL R. ACHENBACH
NBS: 1937 1979
B: December 13, 1911, Thelma, Alberta, Canada
EDUCATION:
University of Wyoming: BS (Mechanical Engineering), 1931; BS (Electrical Engineering), 1932
PRINCIPAL FIELDS:
Building technology; environment and energy engineering
POSITIONS HELD AT NBS:
Junior Engineer, Building Materials, Heat and Power Division
Chief, Building Environment Division
Senior Research Engineer, Center for Building Technology
HONORS:
U.S. Department of Commerce: Silver Medal, 1956; Gold Medal, 1975
NBS Rosa Award, 1970
American Society of Heating, Refrigerating and Air Conditioning Engineers Distinguished Service Award, 1967
Elected to Sigma Xi, Sigma Tau, Phi Kappa Phi
MEMBERSHIPS:
American Society of Heating, Refrigerating and Air Conditioning Engineers (Fellow; Board of Directors)
Building Research Institute (Board of Governors)
International Council for Building Research, Studies and Documentation (CIB), U.S. National Committee
International Standards Organization, U.S. National Committee
International Institute of Refrigeration, U.S. National Committee (Vice Chairman)
PUBLICATIONS:
Author of many technical articles and papers; Associate Editor of engineering handbooks published by the American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE)
Effects of degradation-associated polypropylene particles in the surrounding tissue after surgical mesh implantation
No full textFarr NTH, Achenbach P, Sievert K-D. Effects of degradation-associated polypropylene particles in the surrounding tissue after surgical mesh implantation. Nature Reviews Urology . 2025.Evidence of polypropylene mesh degradation has revealed particle accumulation in surrounding tissues, raising concerns about potential local and systemic immune responses. Associations between polypropylene degradation and autoimmune/autoinflammatory syndrome induced by adjuvants-like symptoms have been made, and vigilant clinical assessment is important, especially in patients with a predisposition for allergy or autoimmune diseases
Exploratory Analyses: Linear regression of effect of DRD4 genotype, maternal sensitivity, and their interaction on 18 month child DSM-problems subscales (Achenbach CBCL)<sup>§</sup>.
No full textExploratory Analyses: Linear regression of effect of DRD4 genotype, maternal sensitivity, and their interaction on 18 month child DSM-problems subscales (Achenbach CBCL)§.</p
Replication Analysis: Linear regression of effect of DRD4 genotype, maternal sensitivity, and their interaction on 18 month child Externalizing Behavioral problems (Achenbach CBCL)<sup>§</sup>.
No full textReplication Analysis: Linear regression of effect of DRD4 genotype, maternal sensitivity, and their interaction on 18 month child Externalizing Behavioral problems (Achenbach CBCL)§.</p
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