scholarly journals Research and control of the purity of production hydrogen with a high degree of purification when applying the electrolysis method of production

2018 ◽  
Vol 1 (6 (91)) ◽  
pp. 40-46
Author(s):  
Valeriy Nikolsky ◽  
Olga Oliynyk ◽  
Viktor Ved ◽  
Olena Gnatko ◽  
Andrii Pugach ◽  
...  
Keyword(s):  
Electrolysis Method ◽  
Method Of Production ◽  
And Control ◽  
High Degree ◽  
Degree Of Purification

scholarly journals A Systematic Review of Greenhouse Humidity Prediction and Control Models Using Fuzzy Inference Systems

2022 ◽  
Vol 2022 ◽  
pp. 1-16
Author(s):  
Sebastian-Camilo Vanegas-Ayala ◽  
Julio Barón-Velandia ◽  
Daniel-David Leal-Lara
Keyword(s):  
Predictive Control ◽  
Fuzzy Inference ◽  
Fuzzy Inference Systems ◽  
Clustering Techniques ◽  
Control Models ◽  
Environment Variables ◽  
Prediction And Control ◽  
Inference Systems ◽  
And Control ◽  
High Degree

Cultivating in greenhouses constitutes a fundamental tool for the development of high-quality crops with a high degree of profitability. Prediction and control models guarantee the correct management of environment variables, for which fuzzy inference systems have been successfully implemented. The purpose of this review is determining the various relationships in fuzzy inference systems currently used for the modelling, prediction, and control of humidity in greenhouses and how they have changed over time to be able to develop more robust and easier to understand models. The methodology follows the PRISMA work guide. A total of 93 investigations in 4 academic databases were reviewed; their bibliometric aspects, which contribute to the objective of the investigation, were extracted and analysed. It was finally concluded that the development of models based in Mamdani fuzzy inference systems, integrated with optimization and fuzzy clustering techniques, and following strategies such as model-based predictive control guarantee high levels of precision and interpretability.

Evaluation of Applied Materials' Rapid Thermal Processor using Sematech Methodologies for 0.25 m Technology Thermal Applications-Part II

1996 ◽  
Vol 429 ◽  
Author(s):  
Arun K. Nanda ◽  
Terrence J. Riley ◽  
Gary Miner ◽  
Michael F. Pas ◽  
Sylvia Hossain-Pas
Keyword(s):  
Thermal Processing ◽  
Cost Effective ◽  
Development Project ◽  
Control Performance ◽  
Joint Development ◽  
Temperature Offset ◽  
And Control ◽  
High Degree ◽  
Manufacturing Environments ◽  
Measurement And Control

AbstractUnder a joint development contract with Applied Materials (AMAT) and Texas Instruments (TI), SEMATECH undertook a project (Joint Development Project J100) with a goal of delivering a cost effective, technically advanced Rapid Thermal Processor (RTP). The RTP tool was specified to meet the present and future manufacturing needs of SEMATECH's member companies. The J100 results contained here will focus on the temperature and control performance of the AMAT RTP tool. The J100 results on the temperature measurement and control performance of AMAT's RTP tool using bare backside monitor wafers were presented in part I. In actual manufacturing environments the backside conditions of wafers are not consistent which causes temperature variations during rapid thermal processing. In this experiment, boron monitor wafers with varying backside conditions were used to test the uniformity, repeatability, and stability of the tool. The wafer backside films were fabricated using predictions from emissivity models and were subsequently verified by experimental techniques. In addition, perturbation experiments utilizing boron and arsenic implanted wafers demonstrated a high degree of localized temperature control across the wafers. A 3-sigma temperature variation ranging from 3.0 °C (for wafers with similar backside films) to 6.0 °C (for wafers with varying backside films) was found for all wafers processed during this evaluation. The perturbation experiments, which included a forced temperature offset of two degrees at one of the wafer temperature sensors, resulted in a noticeable change in sheet resistance across the wafer.

scholarly journals Virulence Characteristics and Antibiotic Resistance Profiles of Shiga Toxin-Producing Escherichia coli Isolates from Diverse Sources

Antibiotics ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 587
Author(s):  
Momna Rubab ◽  
Deog-Hwan Oh
Keyword(s):  
Escherichia Coli ◽  
Antibiotic Resistance ◽  
Shiga Toxin ◽  
Multidrug Resistant ◽  
Control Measures ◽  
Diffusion Method ◽  
Shiga Toxins ◽  
E Coli ◽  
And Control ◽  
High Degree

Shiga toxin-producing Escherichia coli (STEC) is an enteric pathogen that causes several gastrointestinal ailments in humans across the world. STEC’s ability to cause ailment is attributed to the presence of a broad range of known and putative virulence factors (VFs) including those that encode Shiga toxins. A total of 51 E. coli strains belonging to serogroups O26, O45, O103, O104, O113, O121, O145, and O157 were tested for the presence of nine VFs via PCR and for their susceptibility to 17 frequently used antibiotics using the disc diffusion method. The isolates belonged to eight different serotypes, including eight O serogroups and 12 H types. The frequency of the presence of key VFs were stx1 (76.47%), stx2 (86.27%), eae (100%), ehxA (98.03%), nleA (100%), ureC (94.11%), iha (96.07%), subA (9.80%), and saa (94.11%) in the E. coli strains. All E. coli strains carried seven or more distinct VFs and, among these, four isolates harbored all tested VFs. In addition, all E. coli strains had a high degree of antibiotic resistance and were multidrug resistant (MDR). These results show a high incidence frequency of VFs and heterogeneity of VFs and MDR profiles of E. coli strains. Moreover, half of the E. coli isolates (74.5%) were resistant to > 9 classes of antibiotics (more than 50% of the tested antibiotics). Thus, our findings highlight the importance of appropriate epidemiological and microbiological surveillance and control measures to prevent STEC disease in humans worldwide.

Two-Axis Solid-State Microgyroscope on Surface Acoustic Waves

2019 ◽  
Vol 20 (5) ◽  
pp. 299-307
Author(s):  
V. P. Sizov ◽  
V. N. Pogorelov ◽  
Yu. V. Vakhtin
Keyword(s):  
Solid State ◽  
Elastic Waves ◽  
Acoustic Waves ◽  
Surface Acoustic Waves ◽  
Oscillation Amplitude ◽  
Substrate Layer ◽  
Production Technologies ◽  
Wave Models ◽  
And Control ◽  
High Degree

This article focuses on the development of a two-axis solid state micro gyroscope (SMG) on surface acoustic waves (SAW). The described gyroscope belongs to the category of inexpensive sensing elements featuring a high degree of longtime overload stability. This advantage seems to make SAW SMGs a priority choice for navigation and control systems functioning in severe overload environments of up to 65,000 g. As of today SAW SMGs are designed according to a number of known principles. Such SMGs may also operate on standing SAWs or traveling SAWs. This article addresses the first gyro type. Unfortunately, the existing standing SAW SMGs share a common limitation of measuring angular rates in relation to one axis only. This research attempts to introduce an innovative two-axis standing SAW SMG. The influence of the basis rotation on the parameters of the elastic waves traveling within the substrate layer was carefully studied. Incident and reflected wave models were also elaborated. The numerical simulation results demonstrate the effects of the basis rotation on the complex factors of the volume waves reflected by the substrate layer and on the phase velocity and frequency thereof as well as on the oscillation amplitude of the particles involved in SAW transition, and on the elliptical particle movement path configuration. Also, the SAW SMG is compared to the existing micromechanical gyroscopes, and the basic SAW SMG production technologies are reviewed.

An Apparatus and Method for Rigorously Controlling Amount of Reward and Amount of Consummatory Activity

1964 ◽  
Vol 14 (2) ◽  
pp. 388-390 ◽  
Author(s):  
Donald J. Mason
Keyword(s):  
And Control ◽  
High Degree ◽  
Consummatory Activity

This paper outlines shortcomings of studies using food pellets of varying size or number as a technique for quantifying and varying amount of reward and/or amount of consummatory activity. An apparatus, utilizing a “drinkometer” circuit in conjunction with a stepping relay, is described. It presents fluid incentives and yields a high degree of precision and control of various parameters of reward, including consummatory activity.

Research on the Framework of 4PL Based on GIS/3G/GPS

2011 ◽  
Vol 467-469 ◽  
pp. 1136-1143
Author(s):  
Pei Guang Lin ◽  
Hui Ma ◽  
Zhi Zheng Zhou
Keyword(s):  
Supply Chain ◽  
Information Network ◽  
Massive Data ◽  
Logistics Network ◽  
Attribute Data ◽  
Fourth Party Logistics ◽  
Map Data ◽  
Logistics Process ◽  
And Control ◽  
High Degree

Information is the soul of the logistics, and the powerful logistics network is a prerequisite for the Fourth Party Logistics. Information network can control all aspects of the logistics supply chain, integrate the national logistics resources effectively, enhance the efficiency and reduce logistics cost. This paper proposes a logistics platform based on WebGIS/3G/GPS, which can share the attribute data and map data in high degree and realize distribute storage. It not only can change the dull attribute data into vivid graphics, but also makes the management and maintenance for massive data convenient and efficient, and control the logistics process accurately and timely. The implementation of the platform will maximize the advantages of the Fourth Logistics, strengthen control over the logistics process.

Growing and Evolving Soft Robots

2014 ◽  
Vol 20 (1) ◽  
pp. 143-162 ◽  
Author(s):  
John Rieffel ◽  
Davis Knox ◽  
Schuyler Smith ◽  
Barry Trimmer
Keyword(s):  
Material Properties ◽  
Body Shape ◽  
Design Development ◽  
Seed Structure ◽  
Soft Body ◽  
Soft Robots ◽  
Body Shapes ◽  
And Control ◽  
High Degree ◽  
Degree Of Coupling

Completely soft and flexible robots offer to revolutionize fields ranging from search and rescue to endoscopic surgery. One of the outstanding challenges in this burgeoning field is the chicken-and-egg problem of body-brain design: Development of locomotion requires the preexistence of a locomotion-capable body, and development of a location-capable body requires the preexistence of a locomotive gait. This problem is compounded by the high degree of coupling between the material properties of a soft body (such as stiffness or damping coefficients) and the effectiveness of a gait. This article synthesizes four years of research into soft robotics, in particular describing three approaches to the co-discovery of soft robot morphology and control. In the first, muscle placement and firing patterns are coevolved for a fixed body shape with fixed material properties. In the second, the material properties of a simulated soft body coevolve alongside locomotive gaits, with body shape and muscle placement fixed. In the third, a developmental encoding is used to scalably grow elaborate soft body shapes from a small seed structure. Considerations of the simulation time and the challenges of physically implementing soft robots in the real world are discussed.

scholarly journals NEURON AND GLIAL CELL NUMBERS IN THE MEDIODORSAL THALAMIC NUCLEUS IN BRAINS OF SCHIZOPHRENIC SUBJECTS

2011 ◽  
Vol 27 (3) ◽  
pp. 133 ◽  
Author(s):  
Rune Damgaard Nielsen ◽  
Maja Abitz ◽  
Bente Pakkenberg
Keyword(s):  
Thalamic Nucleus ◽  
Age Of Onset ◽  
Mental Disease ◽  
Neuronal Cell ◽  
Cell Numbers ◽  
Control Subjects ◽  
Mediodorsal Thalamic Nucleus ◽  
And Control ◽  
High Degree ◽  
Severe Mental Disease

Several stereological studies of schizophrenic subjects have shown reduction in both the total number of neurons and in the total volume of the mediodorsal thalamic nucleus (MD). This is in contrast to other studies in that no differences have been found. Using systematic random sampling and an optical fractionator design, the total number of neuron and glial cells in the MD subdivisions: parvocellular (MDPC), magnocellular (MDMC), and densocellular (MDDC) were counted in brains from 9 schizophrenic and 8 control subjects. The control subjects were age, height and body-weight matched to the schizophrenic subjects. We found the neuronal numbers in the schizophrenic subjects to range more than a factor of two, from 3.68 to 9.22 x 106. This is in contrast to the control subjects, who ranged from 5.24 to 7.10 x 106 in neuronal cell numbers. Within our inhomogeneous sample, some schizophrenic subjects thus exhibited relative high total neuron numbers in MD, while others exhibited relative low neuron numbers. The result is in line with the heterogeneity of this severe mental disease and may help to explain why different research groups get different results. The major limitation in this study is the small number of brains of schizophrenic subjects with a high degree of inhomogeneity in length of disease and age of onset. The debates of the comparison of the neurons in the MD in brains of schizophrenic subjects and control subjects and the possible impact of this variance on the disease are still not complete.

scholarly journals Simulación de la dinámica de un secador solar usando la teoría del caos

2017 ◽  
Vol 2 (1) ◽  
pp. 17
Author(s):  
Arquímides Haro Velasteguí ◽  
Yolanda Llosas Albuerne ◽  
Maria Fernández
Keyword(s):  
Developing Countries ◽  
Chaos Theory ◽  
Technology Development ◽  
Solar Drying ◽  
Alternative Technologies ◽  
Index Terms ◽  
Drying Model ◽  
And Control ◽  
High Degree ◽  
Or Applications

The simulation is a technique that represents a system, It allows to diagnose its operation, help establish its behavior and control their possible variations, why has become a very important tool in technology development, saving money, time and work. Despite the advantages, there are systems that are extremely difficult to simulate, since its complexity and unpredictability in time is very large, especially those associated with environmental conditions as in the case of solar drying is subject to variables weather, although it is designed properly functioning models regarding the efficiency obtained, but little has been done to improve it, given the development of alternative technologies or applications that have been given to it. In this framework and in order to contribute to the improvement of this type of technology that can be easily adopted by developing countries, with which they can make much better use their natural resources and knowledge, without major technological investment and high degree of accuracy, the present investigation is proposed to apply the Chaos Theory applies as operating base  of a solar drying  model in conditions of the Ecuadorian Highlands Index Terms— Secador solar, modelo matemático, teoría del caos, modelo de simulación, energía solar, altiplano Ecuatoriano.

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