scholarly journals An Anomalous Condition in the Eye of Some Hawks

The Auk ◽  
1956 ◽  
Vol 73 (3) ◽  
pp. 457-457 ◽  
Author(s):  
Rexford D. Lord
Keyword(s):  
2017 ◽  
Vol 42 (1) ◽  
pp. 273-282
Author(s):  
Krzysztof Perlicki ◽  
Mirosław Siergiejczyk ◽  
Marek Stawowy

AbstractOne of the critical issues for broadband accesss is how to test the access network infrastructure and quality of optical signal. The installation and powering up of an optical fiber access networks requires measurement techniques for verifying the link has been configured properly and that its constituent components are functioning correctly. Maintenance functions for a broadband optical access network are classified in two main categories: preventive maintenance and post-fault maintenance. The first one consists of: surveillance (to detect degradation in optical fiber components, or any other anomalous condition not preventing the signal transmission,), testing (to measure and locate any detected degradation or anomalous condition) and control (fiber identification and fiber transfer to allow the testing of the link.). In turn second one consisits of: surveillance (to detect alarms or trouble reports and activate a procedure for restoration), testing (to locate the fault and/or verify the carrier performances after the restoration) and remedy (fiber identification, fiber repair or fiber transfer to restore the link).


1859 ◽  
Vol 9 ◽  
pp. 234-238

The object kept in view by the author of these researches was to determine the law which governed the resistance of cylindrical tubes to external uniform pressure. The anomalous condition in which these constructions have been placed in reference to the internal flues of boilers, and the frequent fatal accidents from explosions produced by collapse, have imperatively called for inquiry into the causes which have led to these unfortunate results. Ever since the first introduc­tion of the steam engine as improved by Watt, and especially since the increased demand for its construction, and its application to almost every branch of industry and every system of transit, the consideration of all circumstances which may affect its economy and security, has become of vast public importance. During the more early period which followed its first introduction, the form of boiler and its powers of resistance to strain, were considerations of much less importance than at present. Then the force of steam, or the pressure under which it was generated, was only about one-eighth, and in some cases less than a sixteenth of what it now is. Besides, the fertile genius of Watt had provided against accident, by a self-acting apparatus, which regulated not only the pressure, but the supply of water to the boiler. Since that time a total change has taken place in the construction and working of the steam engine; and boilers which were perfectly safe at 7 lbs. upon the square inch, are absolutely inadequate for generating steam at 40 lbs. to 50 lbs. on the square inch. This being the case, it follows that every precaution becomes urgently necessary which may serve to increase the strength, and equalize the resisting power of vessels containing an element of such potent influence, and yet so essential to the com­forts and enjoyments of civilized life.


2007 ◽  
Vol 19 (11) ◽  
pp. 1905-1921 ◽  
Author(s):  
Liina Pylkkänen ◽  
Brian McElree

Although research on the neural bases of language has made significant progress on how the brain accesses the meanings of words, our understanding of sentence-level semantic composition remains limited. We studied the magnetoencephalography (MEG) responses elicited by expressions whose meanings involved an element not expressed in the syntax, which enabled us to investigate the brain correlates of semantic composition without confounds from syntactic composition. Sentences such as the author began the book, which asserts that an activity was begun although no activity is mentioned in the syntax, were contrasted with control sentences such as the author wrote the book, which involved no implicit meaning. These conditions were further compared with a semantically anomalous condition (the author disgusted the book). MEG responses to the object noun showed that silent meaning and anomaly are associated with distinct effects, silent meaning, but not anomaly, eliciting increased amplitudes in the anterior midline field (AMF) at 350–450 msec. The AMF was generated in ventromedial prefrontal areas, usually implicated for social cognition and theory of mind. Our results raise the possibility that silent meaning interpretation may share mechanisms with these neighboring domains of cognition.


1870 ◽  
Vol 18 (114-122) ◽  
pp. 321-327

The eye of the Common Mole and the structures connected with it undergo some remarkable changes during the growth of the animal. The gentleman who does me the honour to present the results of an investigation into that subject to the Royal Society was desirous that it should be undertaken in order to ascertain the cause of the anomalous condition in which the organ of vision is found in the adult Mole. It was the suggestion of Mr. Solly that an examination of the eye of the young or fœtal Mole might assist in the explanation; for Mr. Solly had reflected much on the subject, and entertained reasons for believing that such an inquiry would be attended with a satisfactory result.


1945 ◽  
Vol 10 (4) ◽  
pp. 348-352 ◽  
Author(s):  
William M. Goldsmith

This paper deals with the confusion of a certain anomalous condition of the human skull with one type of trepanation. Evidence is presented to show that many specimens exhibited as examples of a certain type of trepanning are clear-cut cases of this congenital bilateral fenestra in the parietal bones. As is generally known, trephining was performed by ancient man to relieve certain maladies such as headaches caused by “demons kicking up a fuss” inside the skull. The excruciatingly painful operation was performed with a crude knife, piece of glass, or sharp-edged stone. Trephining probably flourished in Neolithic times, especially in Bohemia and western Europe. Trephined skulls have been, reported from Bolivia,, Central America, Mexico, Peru, and various other localities.


2021 ◽  
Vol 13 (4) ◽  
pp. 617
Author(s):  
Michael J. Choate ◽  
Rajagopalan Rengarajan ◽  
James C. Storey ◽  
Tim Beckmann

The Landsat 8 (L8) spacecraft and its two instruments, the operational land imager (OLI) and thermal infrared sensor (TIRS), have been consistently characterized and calibrated since its launch in February 2013. These performance metrics and calibration updates are determined through the U.S. Geological Survey (USGS) Landsat image assessment system (IAS), which has been performing this function since its launch. The TIRS on-orbit geometric calibration procedures include TIRS-to-OLI alignment, TIRS sensor chip assembly (SCA) alignment, and TIRS band alignment. In December 2014, the TIRS instrument experienced an anomalous condition related to the instrument’s ability to accurately measure the location of the scene select mechanism (SSM). The SSM is a rotating mirror that allows the instrument’s field of view to be pointed at the Earth, for normal imaging, or at either deep space or an onboard black body, for radiometric calibration purposes. This anomalous condition in the SSM’s position sensor made it necessary to implement a new mode of operation for this mirror, termed mode-0. Mode-0 involves operating the mirror in an open-loop control state during normal mission operations when acquiring Earth data. Closed-loop mode-4 is needed for directing the mirror towards the radiometric calibration targets and is used approximately once every two weeks to collect radiometric calibration data. Mode-0 is used for most operational imaging because it does not require SSM encoder data, thereby allowing the SSM encoder electronics to remain unpowered most of the time, reducing its use throughout the lifetime of the TIRS instrument, thus helping to preserve its nominal behavior during it use. This paper discusses the geometric calibration of the SSM mirror during its current normal mode-0 set of image operations, as its open-loop control allows the mirror to drift over time in its uncontrolled state and its effects on products. The results shown in this paper demonstrate that the ability to have ongoing updates to the modeling of the TIRS SSM mirror model, in both an automated fashion and with a set of more manual operations, allows accuracy that approaches mode-4 results within days from the start of a mode-0 event.


2021 ◽  
Vol 2 (1) ◽  
pp. 23-31
Author(s):  
Dila Ayu Lestari ◽  
Yohanes Juliantoni ◽  
Raisya Hasina

Dandruff is an anomalous condition characterized by excessive exfoliation of the horny layer from the scalp. The leaves of the water henna plant (Impatiens balsamina L.) are one of the natural ingredients that have anti-dandruff properties, so they can be used as an active ingredient in making dandruff shampoo. The water henna leaves were extracted using the maceration method with ethanol 96%. Apart from the active ingredients, shampoo also has an important component, namely surfactants. The surfactant used in this study was a combination of sodium lauryl sulfate and cocamide DEA. The purpose of this study was to optimize the surfactant formula of sodium lauryl sulfate and cocamide DEA in water henna leaf extract shampoo. This research was a laboratory experimental research. Formula optimization was done through the Simplex Latice Design (SLD) method approach by making eight formulas. All formulas were evaluated for their physical properties including the foam height test and pH test. The data obtained were processed with Design Expert® software. Based on the physical evaluation of the water henna leaf extract shampoo, the results of the high foam test were 10,025 cm and a pH of 6,12. The results of the acceptability test of shampoo preparations including the parameters of color, smell, texture and viscosity received a fairly good response with the acquisition of values 3,1, 3,3, 3,9 and 4 with information 1 (very dislike), 2 (dislike), 3 (quite like), 4 (like) and 5 (really like). The optimum formula for the shampoo consisting of 5% water henna leaf extract, 1,1863% sodium lauryl sulfate, 19,814% cocamide DEA, 3% CMC, 0,5% citric acid, 0,5% methyl paraben, 0,15% menthol and distilled water had physical properties that meet the requirements of a good shampoo preparation.


1920 ◽  
Vol 3 (3) ◽  
pp. 161-162
Author(s):  
William C. Finnoff

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