scholarly journals Permissible parameters for the circulation rate of the sludge mixture in airlift reactor-clarifier with suspended layer

2018 ◽  
Vol 245 ◽  
pp. 11009
Author(s):  
Viktor Nezdoiminov ◽  
Dmitrii Zavorotnyi ◽  
Vitalii Rozhkov ◽  
Pavel Deminov
Keyword(s):  
Lower Limit ◽  
Geometric Parameters ◽  
Airlift Reactor ◽  
Circulation Rate ◽  
Active Sludge ◽  
Factors Affecting ◽  
Anoxic Conditions ◽  
Upper Limit ◽  
Hydraulic Load ◽  
Suspended Layer

Factors affecting the permissible limits of sludge mixture circulation rate are given for airlift reactor-clarifier with a suspended layer. The upper limit of the circulation rate is justified as a function of some geometric dimensions of the bioreactor and the hydraulic load on the clarifier to comply with conditions of a suspended layer existence. The lower limit of the circulation rate was obtained on the basis of two conditions: the duration of the active sludge stay in anoxic conditions and the observance of recommended rates in the construction in order to avoid the settling of active sludge. Theoretical and empirical dependences of the maximum permissible values of the circulation rate on the main geometric parameters and on productivity of the airlift reactor-clarifier are presented.

PNN and BP Neural Network Fault Diagnosis Research on Electronic Accelerator Pedal Detection

2020 ◽  
Vol 14 (2) ◽  
pp. 205-220
Author(s):  
Yuxiu Jiang ◽  
Xiaohuan Zhao
Keyword(s):  
Neural Network ◽  
Fault Diagnosis ◽  
Fault Detection ◽  
Lower Limit ◽  
Bp Neural Network ◽  
Accelerator Pedal ◽  
Electronic Throttle ◽  
Measured Voltage ◽  
Upper Limit ◽  
Network Fault

Background: The working state of electronic accelerator pedal directly affects the safety of vehicles and drivers. Effective fault detection and judgment for the working state of the accelerator pedal can prevent accidents. Methods: Aiming at different working conditions of electronic accelerator pedal, this paper used PNN and BP diagnosis model to detect the state of electronic accelerator pedal according to the principle and characteristics of PNN and BP neural network. The fault diagnosis test experiment of electronic accelerator pedal was carried out to get the data acquisition. Results: After the patents for electronic accelerator pedals are queried and used, the first measured voltage, the upper limit of first voltage, the first voltage lower limit, the second measured voltage, the upper limit of second voltage and the second voltage lower limit are tested to build up the data samples. Then the PNN and BP fault diagnosis models of electronic accelerator pedal are established. Six fault samples are defined through the design of electronic accelerator pedal fault classifier and the fault diagnosis processes are executed to test. Conclusion: The fault diagnosis results were analyzed and the comparisons between the PNN and the BP research results show that BP neural network is an effective method for fault detection of electronic throttle pedal, which is obviously superior to PNN neural network based on the experiment data.

scholarly journals From Denmark to Delhi: the multisectoral challenge of regulatingtransfats in India

2012 ◽  
Vol 16 (12) ◽  
pp. 2273-2280 ◽  
Author(s):  
Shauna M Downs ◽  
Anne Marie Thow ◽  
Suparna Ghosh-Jerath ◽  
Justin McNab ◽  
K Srinath Reddy ◽  
...  
Keyword(s):  
Vegetable Oils ◽  
Food Supply ◽  
Retail Sector ◽  
Structured Interviews ◽  
Suitable Alternative ◽  
Factors Affecting ◽  
Key Informants ◽  
Implementation Challenges ◽  
Upper Limit ◽  
Hydrogenated Vegetable Oils

AbstractObjectiveIndia has proposed legislating an upper limit oftransfat in partially hydrogenated vegetable oils and mandatingtransfat labelling in an effort to reduce intakes. The objective of the present study was to examine the complexities of regulatingtransfat in India by examining the policy processes involved and the perceived implementation challenges.DesignSemi-structured interviews (n18) were conducted with key informants from various sectors. Interviewees were asked about sources oftransfat in the food supply, existing policies that may influencetransfats and perceived challenges related to the proposedtransfat regulation, in addition to questions tailored to their area of expertise. Interview data were organised based on common themes.SettingInterviews were conducted in India.SubjectsInterviewees were key informants from various sectors including agriculture, trade, industry and health.ResultsSeveral themes were identified related to the complexity of regulatingtransfat in India. A lack oftransfat awareness, the large unorganised retail sector, a need for suitable alternative products that are both acceptable to consumers and affordable, and a need to build capacity were crucial factors affecting India's ability to successfully regulatetransfat. The limited number of food inspectors will create an additional challenge in terms of enforcement oftransfat regulation.ConclusionsAlthough India will face challenges in regulatingtransfat, legislating an upper limit oftransfat in partially hydrogenated vegetable oils will likely be the most effective approach to reducing it in the food supply. Ongoing engagement with industry, agriculture, trade and processing sectors will prove essential in terms of product reformulation.

The Excavation of Eighteen Round Barrows near Shrewton, Wiltshire.

1984 ◽  
Vol 50 ◽  
pp. 255-318 ◽  
Author(s):  
Charles Green ◽  
Stephen Rollo-Smith ◽  
Elisabeth Crowfoot ◽  
Calvin Wells
Keyword(s):  
Water Supply ◽  
Lower Limit ◽  
Open Water ◽  
Linear Groups ◽  
Upper Limit ◽  
The Village

The excavation of eighteen round barrows was undertaken by the late Charles Green during summer seasons from 1958 to 1960, in advance of their destruction by ploughing. The excavated barrows are members of two linear groups which occupy adjacent spurs to the east of the village of Shrewton in the modern parish of that name (fig. 1). One of the barrows investigated lies in Winterbourne Stoke parish. This western part of Salisbury Plain is termed the ‘Lower Plain’ comprising those areas having their ‘upper limit… between 400 and 450 feet OD and their lower limit where they overlook the valley trenches … between 250 and 300 feet O.D.’ (Gifford 1957, 6). In such a lower valley lie the modern villages of Shrewton and Rollestone, and through it flows the river Till, the nearest modern open water supply to the barrows. This connects the area to the River Avon via the Wylye and Nadder.

scholarly journals PENGARUH PIJAT BAYI TERHADAP LAMA TIDUR BAYI DI DESA DUWET KECAMATAN WONOSARI KABUPATEN KLATEN

2016 ◽  
Vol 4 (1) ◽  
Author(s):  
Warsini Warsini ◽  
Dyah Nugraini
Keyword(s):  
Lower Limit ◽  
Sampling Technique ◽  
Infant Sleep ◽  
Not Given ◽  
Infant Massage ◽  
Natural Form ◽  
Upper Limit ◽  
Lack Of Information ◽  
Long Sleep ◽  
The Village

Background: Even the oldest massage is an activity used by humans to expelfatigue and stress. Lack of information and knowledge of parents of massage,makes many parents think a massage is not a scientific and natural form oftherapy for infants. Most mothers believe massage is necessary only when theirchild had flu and colds.Purpose of the study: To determine the effect of infant massage on infant sleepduration in the village of Duwet, Wonosari Subdistrict, Klaten Regency.The subject: The population in this study is a baby in the village of DuwetWonosari District of Klaten regency totaling 45 babies. Samples that met thestudy criteria and amounted to 20 babies. The sampling technique is simplerandom sampling.Methods: The data collection is done by the experimental method is bymeasuring how much sleep babies after intervention. Data were analyzed usingstatistical tests Independent t-test.The results: Long sleep in infants that give the infant massage is known that atleast 11 hours and a maximum of 18 hours with an average bed is 15.90 hours.Long sleep in infants who were not given the infant massage is known at least 12hours and a maximum of 17 hours with an average bed is 13.90 hours. Statisticalanalysis showed p: 3.967 with an upper limit 0.047 and lower limit 0.33.Conclusion: There is a statistically significant effect of infant massage with infantsleep duration (p: 3.967 with an upper limit 0.047 and lower limit 0.33).Keywords: infant massage, infant sleep duration

scholarly journals Identification of factors affecting competitive tension in the domestic air transport market in Turkey

2020 ◽  
Vol 56 (2) ◽  
pp. 118-139
Author(s):  
Mehmet Yasar ◽  
Ender Gerede
Keyword(s):  
Market Concentration ◽  
Air Transport ◽  
Competitive Market ◽  
Regression Analyses ◽  
Factors Affecting ◽  
Upper Limit ◽  
Competitor Analysis ◽  
Competitive Action ◽  
Different Dimensions ◽  
The Difference

AbstractCompetitive tension refers to pressure that is considered to exist among firms operating in a competitive market and that forces them to take competitive action against each other. An imaginary upper limit of competitive tension symbolizes the difference between whether to take competitive action or not. The antecedents of competitive tension are examined in this study. Within this scope, market commonality and resource similarity are the variables studied as components of competitor analysis; market concentration that provides clues for the competitive structure of competed markets; and finally, competitive asymmetry, presuming that the competition among the companies is not equal and rivals do not consider each other at the same level as competing firms, were taken as primary variables of competitive tension. In order to test whether these variables have an effect on competitive tension among airlines, airlines operating in the domestic air transport market in Turkey were examined in this study. The perceived competitive tension that was detected as a result of regression analyses was studied on three different dimensions, namely, internal tension, external tension, and total tension, and each dimension was analyzed as a different model. The findings of the study revealed that market commonality and market concentration have a significant effect on competitive tension. These effects were found to be positive for market commonality and negative for market concentration. Resource similarity and competitive asymmetry were found to have no significant effect.

DEVELOPMENT AND DIAPAUSE IN PLEOLOPHUS BASIZONUS (HYMENOPTERA: ICHNEUMONIDAE)

1969 ◽  
Vol 101 (9) ◽  
pp. 907-914 ◽  
Author(s):  
K. J. Griffiths
Keyword(s):  
Lower Limit ◽  
Larval Mortality ◽  
Inverse Relation ◽  
Continuous Development ◽  
Upper Limit ◽  
Diapause Development ◽  
Diapause Incidence

AbstractThe upper limit for continuous development of Pleolophus basizonus lies between 25° and 30 °C since all stages develop at the former temperature and larval mortality is complete at the latter temperature. The lower limit lies between 5.5° and 10 °C, since an eonymphal diapause occurs at 5.5 °C. Between these extremes, diapause incidence varies inversely with temperature. The photoperiod experience of the parent has no effect on diapause in the progeny when the latter are reared at 15° and 18 °C, but there is an inverse relation between parental photoperiod experience and progeny diapause incidence at 10 °C. Although larvae and pupae also survive 3 months at 2 °C, most individuals probably overwinter in eonymphal diapause and their diapause requirements are fulfilled in 3 weeks at 2 °C. The incidence and rate of post-diapause development is directly related to temperature.

Runner System Design Optimization for Multigated and Multicavity Injection Molds

2000 ◽  
Author(s):  
Xiaoshi Jin
Keyword(s):  
Design Optimization ◽  
System Design ◽  
Lower Limit ◽  
Design Space ◽  
Injection Pressure ◽  
Cross Sectional ◽  
Upper Limit ◽  
System Design Optimization

Abstract Runner system design for injection molds with multiple gates or multiple cavities often requires iterative analyses for optimized results, because the gate locations or cavity shapes may not be naturally balanced. In addition, in molds with symmetrical layouts, the required injection pressure may be unnecessarily high if the runners are poorly sized. In this paper, a scheme for quickly optimizing runner system design is presented. The objective of design optimization is to minimize the required injection pressure within the design space defined by a given total runner volume. Each runner segment can be given an upper limit and lower limit to define the range of runner cross sectional dimensional size. Application examples are included to demonstrate the effectiveness of the scheme.

scholarly journals Multifrequency Observations of the Jet of 3C 273

1994 ◽  
Vol 159 ◽  
pp. 333-334
Author(s):  
H.-J. Röser ◽  
K. Meisenheimer ◽  
M. Neumann ◽  
R.G. Conway
Keyword(s):  
Synchrotron Radiation ◽  
Lower Limit ◽  
Background Model ◽  
Integration Time ◽  
X Ray ◽  
Upper Limit ◽  
Radio Frequencies ◽  
Quasar 3C 273 ◽  
Good Agreement

Previously we have studied the jet of the quasar 3C 273 at optical and radio frequencies. In our first set of X-ray data with 17.2 ksec integration time obtained with the ROSAT HRI, the jet is easily visible extending out from the bright quasar core. The total number of counts in the jet lies in the range 200 to 300, depending on the details of the background model. This corresponds to an X-ray flux fv(2.9 × 1017 Hz) = 65 … 140 nJy (lower limit, synchrotron radiation α = −0.8 … upper limit, bremsstrahlung α = 0, NHI = 1.8 × 1020 cm−2), in good agreement with the value derived from the EINSTEIN observations.

Problems of High Speed Flight as Affected by Compressibility

1938 ◽  
Vol 42 (327) ◽  
pp. 193-228 ◽  
Author(s):  
C. N. H. Lock
Keyword(s):  
Shock Waves ◽  
Drag Coefficient ◽  
High Altitude ◽  
Lower Limit ◽  
High Speed ◽  
Velocity Of Sound ◽  
Upper Limit

My lecture deals with the effect of the compressibility of air on bodies moving through it at speeds ranging from the velocity of sound (710 m.p.h. at high altitude) as an upper limit to a lower limit ranging roughly from half to threequarters the velocity of sound. Somewhere within this range will commence a very rapid increase of the drag coefficient of an aircraft as a result of the formation of local shock waves.

scholarly journals Factors affecting the f × Q product of 3C-SiC microstrings: What is the upper limit for sensitivity?

2016 ◽  
Vol 119 (5) ◽  
pp. 055304 ◽  
Author(s):  
Atieh R. Kermany ◽  
James S. Bennett ◽  
George A. Brawley ◽  
Warwick P. Bowen ◽  
Francesca Iacopi
Keyword(s):  
Factors Affecting ◽  
Upper Limit
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