The Absorption of Light as a Determining Factor in the Selection of the Size of the Objective for the Great Refractor of the Potsdam Observatory.

1897 ◽  
Vol 5 ◽  
pp. 75
Author(s):  
H. C. Vogel
Keyword(s):  
Absorption Of Light ◽  
Determining Factor ◽  
Selection Of

scholarly journals High Intra-Abdominal Pressure Secondary to Obesity as a Determining Factor for Ventriculoperitoneal Shunt Malfunction

2018 ◽  
Vol 37 (01) ◽  
pp. 50-53
Author(s):  
Barbara Morais ◽  
Vitor Yamaki ◽  
Daniel Cardeal ◽  
Fernanda Andrade ◽  
Wellingson Paiva ◽  
...  
Keyword(s):  
Ventriculoperitoneal Shunt ◽  
Abdominal Ultrasound ◽  
Important Variable ◽  
Abdominal Pressure ◽  
Brain Tomography ◽  
Valve Malfunction ◽  
Determining Factor ◽  
Valve Pressure ◽  
Selection Of

AbstractThe ventriculoperitoneal shunt (VPS) is an established treatment for hydrocephalus. The functioning of the system requires a pressure difference between the cranial and abdominal cavities. The VPS can be particularly problematic in patients with increased intra-abdominal pressure (IAP). We report the case of a 16-year-old girl with VPS since she was 2 months old due to hydrocephalus secondary to myelomeningocele. The patient had been asymptomatic ever since, but she sought the emergency service with intermittent headache and vomiting. A non-enhanced brain tomography, a shunt trajectory X-ray and an abdominal ultrasound revealed no cause of system malfunction. In view of the persistent clinical picture, a revision of the shunt was performed, which revealed adequate intraoperative functioning. She returned with the same symptoms two weeks after surgery. The patient was obese (body mass index [BMI]: 48). We hypothesized intermittent valve malfunction due to increased intra-abdominal pressure. She underwent a ventriculoatrial shunt, without intercurrences. In the postoperative period, the patient presented transient tachycardia and was asymptomatic at the 6-month follow-up. Obesity should be considered an important variable for the inadequate functioning of the VPS due to increased IAP and catheter dystocia to the extraperitoneal cavity. Studies have already correlated the IAP with the BMI, which reaches between 8 mm Hg and 12 mm Hg in obese individuals. Therefore, the BMI can be considered during the selection of valve pressure in systems with non-adjustable valves to prevent insufficient drainage. The recognition of obesity as a cause of VPS malfunction is fundamental to avoid unnecessary surgeries and intermittent malfunction of the system.

Gender assignment strategies and L1 effects in the elicited production of mixed Spanish-Basque DPs

2021 ◽  
Author(s):  
Amaia Munarriz-Ibarrola ◽  
Maria-José Ezeizabarrena ◽  
Varun DC Arrazola ◽  
M. Carmen Parafita Couto
Keyword(s):  
Statistical Analyses ◽  
Gender Assignment ◽  
Determiner Phrases ◽  
Languages In Contact ◽  
Determining Factor ◽  
Selection Of

Abstract This paper investigates the strategies involved in gender assignment in Spanish-Basque mixed Determiner Phrases (DPs) with a gendered Spanish determiner (el M /la F) and a Basque ungendered noun. Previous studies on Spanish-Basque mixed DPs have revealed conflicting results regarding the determining factor affecting gender assignment, namely, phonological ending vs. analogical gender. We designed a forced-switch elicitation task in order to elicit mixed DPs with a Spanish determiner and a Basque noun (controlled for both phonological vs. analogical cues). Thirty highly proficient Spanish-Basque bilinguals with different profiles and socio­linguistic backgrounds participated in the study. Three cues were significant in the selection of the Spanish M/F determiner: the analogical gender and two phonological cues, the word ending and the root ending of the Basque noun. Further statistical analyses revealed participants’ L1 as a strong factor in the variability attested: bilinguals with Spanish as (one of) their L1(s) rely predominantly on the analogical criterion, whereas speakers with only Basque as L1 follow mainly the phonological criterion. Overall, this study provides an explanation for the previous conflicting results and highlights the fact that bilinguals may use different strategies depending on their bilingual profile and the morpho-phonological properties of the languages in contact.

SPONTANEOUS SELF-FERTILIZATION IN RELATION TO SEED PRODUCTION IN SWEET CLOVER (MELILOTUS)

1931 ◽  
Vol 5 (6) ◽  
pp. 660-664 ◽  
Author(s):  
L. E. Kirk ◽  
T. M. Stevenson
Keyword(s):  
Seed Production ◽  
Pollen Grains ◽  
Sweet Clover ◽  
Flower Structure ◽  
Melilotus Officinalis ◽  
Stigmatic Surface ◽  
Melilotus Alba ◽  
Self Fertilization ◽  
Determining Factor ◽  
Selection Of

The chief determining factor in spontaneous self-fertilization in white sweet clover (Melilotus alba) appears to be the distribution of pollen within the unopened flowers. This in turn depends on (1) length of stamens, (2) length of style, (3) amount of pollen, and (4) size of cavity within the upper part of the keel. When the flower structure and quantity of pollen is such as to insure the deposition of pollen grains on the stigma before the blossom is likely to be disturbed by insects, the plant will be normally self-fertilized. In the yellow flowered species of sweet clover (Melilotus officinalis) spontaneous self-fertilization is effectively prevented, except in certain varieties, by a characteristic of the stigma which makes it unreceptive. Scarification of the stigmatic surface appears to be necessary before fertilization can take place. Variation occurs also, as in M. alba, in the length of stamens and style, size of keel cavity, and the amount of pollen.There is a high correlation in M. alba between the percentage of flowers which are naturally self-pollinated and the percentage of flowers which produce pods when the plants are caged to exclude insects. Selection of plants which are normally self-fertilized can be made by examining the early flowers, thus obviating the necessity of bagging or caging plants which do not possess this character.A strain of M. alba which is normally self-fertilized was found to produce almost twice as much seed as another strain which is normally cross-pollinated under comparable conditions in the field.

The Relation of certain Algae to Breeding Places of Mosquitos in Queensland

1928 ◽  
Vol 18 (4) ◽  
pp. 377-389 ◽  
Author(s):  
Ronald Hamlyn-Harris
Keyword(s):  
Natural Water ◽  
Larval Growth ◽  
Local Conditions ◽  
Patient Study ◽  
Chemical Conditions ◽  
Physical And Chemical ◽  
Determining Factor ◽  
Selection Of

(1) An effort has been made to find an explanation for certain problems involved in the selection of breeding-places of mosquitos in Queensland.(2) Many of these problems must remain unsolved until it is possible by patient study of local conditions to bring all the factors involved into play.(3) In order to explain the reason for the avoidance of natural water, where it exists, it is suggested that the soils that underlie them should first be taken into consideration, and that the waters should be examined with reference to their physical and chemical conditions.(4) Observations and experiments, spread over a period of eighteen months, confirm the findings of previous authors that Characeae do not in themselves possess larvicidal properties.(5) That food is the main determining factor in the choice of preferential breeding-places seems to be borne out by actual results obtained, and that when such are not available, mosquitos will resort to breeding-places of compulsion, such places being usually observed to be entirely or partly devoid of food supplies.(6) It is suggested that the salts of alumina and iron in the ferrous state tend to destroy food organisms, and that where these conditions exist, the water is not selected preferentially.(7) The presence of algae leads to the appearance of Anopheles annulipes.(8) That Cladophora holsatica inhibits larval growth seems to be experimentally established.(9) Bacterial scums are mainly due to B. subtilis and have a tendency to produce a slight alkalinity.

Mo1434 WHICH IS THE DETERMINING FACTOR FOR SELECTION OF THE ANTIMICROBIAL AGENT IN PATIENT WITH ACUTE CHOLANGITIS, BILE OR BLOOD?

2020 ◽  
Vol 158 (6) ◽  
pp. S-875-S-876
Author(s):  
Kook Hyun Kim ◽  
Min Chul Kim ◽  
Hyo Jin Kwon ◽  
Joon Hyun Cho ◽  
Sung Bum Kim ◽  
...  
Keyword(s):  
Antimicrobial Agent ◽  
Acute Cholangitis ◽  
Determining Factor ◽  
Selection Of

The pyrolysis of alkyl chlorides on the surface of Pyrex glass

1964 ◽  
Vol 17 (11) ◽  
pp. 1217 ◽  
Author(s):  
JS Shapiro ◽  
ES Swinbourne ◽  
BC Young
Keyword(s):  
Hydrogen Chloride ◽  
Heterogeneous Reaction ◽  
Initial Pressure ◽  
Pyrex Glass ◽  
Kcal Mole ◽  
Arrhenius Activation Energy ◽  
First Order ◽  
Determining Factor ◽  
Chlorine Bond ◽  
Selection Of

A study has been made of the surface-catalysed dehydrochlorination of a selection of gaseous chlorinated hydrocarbons on Pyrex glass. For primary chlorides at 413� the rate sequence: ethyl<n-propyl<isobutyl<neopentyl was observed for 200 mm initial pressure of reagent. Ethyl chloride decomposes at 400-450� according to a first-order law, and the overall Arrhenius activation energy for the heterogeneous reaction is 24.1 kcal/mole; the rate is slightly depressed by the addition of propene and slightly enhanced by hydrogen chloride. Catalysis by hydrogen chloride was observed to be much more marked in the case of isopropyl chloride decomposition at 190-250�, but reproducible behaviour for this reaction was not readily attained. The catalytic action of Pyrex glass is accounted for by the polar surface assisting in the separation of charges within the reacting molecule, emphasis being placed upon the polarization of the carbon-chlorine bond as the important rate-determining factor.

scholarly journals Travelers’ Perception with Reference to Indian Domestic Airlines

2019 ◽  
Vol 8 (3) ◽  
pp. 5470-5476
Keyword(s):  
Customer Value ◽  
Structural Equation ◽  
Quantitative Research ◽  
Equation Model ◽  
Civil Aviation ◽  
Domestic Airlines ◽  
Determining Factor ◽  
Research Analysis ◽  
Selection Of

The foundation of this research is that cost is no t the only determining factor in the selection of a specific airline. quality of service and satisfaction of customers are also essential tools for evaluating the customers' preference when the airfares between the airlines are marginal.This research also aims to defi ne best practices in quality prevalent in the domestic civil aviation sector in India and based on the results; suggestions are given to quality improvement dimensions for the Indian Airlines. Quantitative research analysis is carried with structural equation model to draw the conclusions. The quality service practices identified by the study will benefit the domestic airlines to improve their overall customer value and thereby customer loyalty and profitability. The study is confined to only domestic airlines and the data collection was conducted only in Pune.

scholarly journals Influence of cooling air selections on the efficiency of a gas turbine installation

2020 ◽  
Vol 22 (4) ◽  
pp. 16-23
Author(s):  
I. I. Mubarakov ◽  
A. B. Shigapov
Keyword(s):  
Gas Turbine ◽  
Climatic Conditions ◽  
Input Device ◽  
Operational Parameter ◽  
Extensive Information ◽  
Air Compression ◽  
Cooling Air ◽  
Determining Factor ◽  
Turbine Installation ◽  
Selection Of

A gas turbine installation (GTI) consists of 5 main parts: an input device, a compressor, a combustion chamber, a gas turbine, and an output device. In this work, due to the lack of sufficiently extensive information about stationary GTI, data from the characteristics of aviation GTI were partially used. The GTI operation efficiency is influenced by many factors, among which, apparently, the determining factor is the degree of air compression in the compressor π К . Of course, the compression ratio depends on the design scheme of the gas turbine, the type of fuel, the climatic conditions of operation, and others. The most important operational parameter of the GTI is the effective power NP and specific fuel consumption bud . The article provides a numerical analysis of the effect π К on NP and bud under variations in the temperature of gases at the turbine inlet T3 , as well as the influence of other factors, including the selection of part of the air for cooling high-temperature surfaces of the structure. The conclusions were made based on the calculations, the results of which are shown in the tables, and in the comparison graphs of obtained results.

scholarly journals IRI-CCE: A Platform for Evaluating CRISPR-based Genome Editing Tools and Its Components

2021 ◽  
Author(s):  
Rahul Mahadev Shelake ◽  
Dibyajyoti Pramanik ◽  
Jae-Yean Kim
Keyword(s):  
Genome Editing ◽  
Rapid Assessment ◽  
Ectopic Expression ◽  
Plasmid Vectors ◽  
Guide Rnas ◽  
Plant Promoters ◽  
Distinct Features ◽  
Determining Factor ◽  
Selection Of

Rapid assessment of Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR)-based tools and validation of cloned CRISPR-plasmid vectors are critical aspects for the successful application of genome editing (GE) in different organisms, including plants. Also, the selection of active guide RNAs (gRNAs) is a determining factor to achieve efficient GE at the targeted locus. Incidentally, plasmid vectors capable of ectopic expression of Cas enzyme and sgRNAs in bacteria will facilitate the quick screening and reliability of cloned plasmids and the functionality of designed gRNAs. We report a platform for in vivo rapid investigation of CRISPR components in Escherichia coli (IRI-CCE), which is compatible with plant-transforming binary vectors comprising plant promoters/terminators. Besides, IRI-CCE analyses reveal distinct features of cytidine (PmCDA1, evoCDA1, APOBEC3A) and adenine (ABE8e) base editors. Finally, we show the IRI-CCE platform as a reliable and rapid method for screening functional gRNAs to achieve successful GE outcomes. Base editor-based CRISPR components expressed by promoters of different strengths led to the establishment of IRI-CCE platform for three major applications: optimization of novel CRISPR tools, validation of cloned CRISPR plasmids, and to know gRNA functionality.

scholarly journals ANÁLISE SOCIOFONÉTICA DO PORTUGUÊS FALADO EM SÃO LUÍS/MA COM BASE EM DADOS AMPER | SOCIOPHONETIC ANALYSIS OF PORTUGUESE SPOKEN IN SÃO LUÍS / MA BASED ON AMPER DATA

2019 ◽  
pp. 24
Author(s):  
Brayna Cardoso ◽  
Regina Célia Fernandes Cruz
Keyword(s):  
Acoustic Analysis ◽  
Automatic Segmentation ◽  
Brazilian Portuguese ◽  
Title Page ◽  
Physical Parameters ◽  
Audio Signals ◽  
Acoustic Measures ◽  
Parameters Selection ◽  
Determining Factor ◽  
Selection Of

<div class="page" title="Page 1"><div class="section"><div class="layoutArea"><div class="column"><p><span>Resumo: </span><span>O artigo apresenta uma análise comparativa intradialetal do português falado em São Luís, com a finalidade de caracterizar o padrão entoacional da variedade, no que diz respeito as sentenças declarativas neutras e interrogativas totais. A teoria segue as concepções da Sociofonética (FELLONI, 2011), visto que empreende uma análise acústica da variação entoacional da variedade ludovicense com base nos dados AMPER-POR. Ao todo foram 1.836 dados analisados (51 sentenças x 2 modalidades x 3 melhores repetições x 6 locutores). A metodologia é composta das seguintes etapas: codificação das repetições; isolamento das repetições; segmentação automática dos sinais de áudio; extração das medidas acústicas das vogais e das médias dos parâmetros físicos controlados; seleção das 3 melhores repetições; normalização dos dados e produção de gráficos no R. Os resultados comprovam que, apenas a F0 atuou como fator determinante na discriminação da entoação modal, a duração e a intensidade atuaram mais com relação ao acento lexical, contudo, não foram fatores determinantes no que concerne à entoação modal.</span></p><div class="page" title="Page 2"><div class="layoutArea"><div class="column"><p><span>Abstract: </span><span>The article presents an intradialetal comparative analysis of the Portuguese spoken in São Luís, with the purpose of characterizing the intonational pattern of the variety, with respect to the neutral declarative and total interrogative sentences. The theory follows the conceptions of Sociophonetic (FELLONI, 2011), since it undertakes an acoustic analysis of the intonational variation of the ludovic variety based on AMPER-POR data. In total, 1.836 data were analyzed (51 sentences x 2 modalities x 3 best repeats x 6 speakers). The methodology is composed of the following steps: repetition coding; isolation of replicates; automatic segmentation of audio signals; extraction of the acoustic measures of the vowels and the means of the controlled physical parameters; selection of the 3 best replicates; normalization of the data and production of graphs in the R. The results show that only F0 acted as a determining factor in the discrimination of modal intonation, duration and intensity acted more in relation to the lexical accent, however, were not determinant factors with respect to modal intonation. </span></p><p><span>Keywords</span><span>: Sociophonetic. Prosodic Analysis. Brazilian Portuguese. AMPER-POR project. São Luís. </span></p></div></div></div><p><span><br /></span></p><p> </p></div></div></div></div>

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