scholarly journals Piezoelectric mathematical modeling; technological feasibility in the generation and storage of electric charge

2022 ◽  
Vol 2159 (1) ◽  
pp. 012009
Author(s):  
J E Camargo-Chávez ◽  
S Arceo-Díaz ◽  
E E Bricio-Barrios ◽  
R E Chávez-Valdez
Keyword(s):  
High Performance ◽  
Emerging Technologies ◽  
Mechanical Energy ◽  
Energy Generation ◽  
Energy Sources ◽  
The Cost ◽  
Relationship Of ◽  
Sound Pulses ◽  
The Relationship ◽  
And Storage

Abstract Emerging technologies are efficient alternatives for satisfying the growing demand for sustainable and cheap energy sources. Piezoelectrics are one of the most promising energy sources derived from emerging technologies. These materials are capable of converting mechanical energy into electricity or vice versa. Piezoelectrics have been used for almost a hundred years to generate electrical and sound pulses. However, the use of piezoelectrics for power generation is constrained by the cost associated with equipment and infrastructure. This problem has been addressed through mathematical models that relate the physical and electrical properties of the piezoelectric material with the voltage generated. Although these models have high performance, they do not incorporate voltage rectification and electrical charge storage stages. This work presents a mathematical model that describes the relationship of the physical and electromechanical properties of a system employing a piezoelectric for energy generation. The voltage of the system and the charge stored in a capacitor are calculated through this model. Also, contour diagrams are presented as a tool for facilitating the efficiency of energy generation.

Seed Longevity and Germination Behaviour in Eugenia roxburghii

2021 ◽  
Vol 27 (3) ◽  
pp. 167-171
Author(s):  
Shareef Muhammed ◽  
Chitra Rajeswary ◽  
Anil Chandran
Keyword(s):  
Storage Temperature ◽  
Seed Viability ◽  
Seed Longevity ◽  
Ex Situ ◽  
Hermetic Storage ◽  
Germination Behaviour ◽  
Garden Plant ◽  
Relationship Of ◽  
The Relationship ◽  
And Storage

Eugenia roxburghii is an evergreen graceful shrub with a tremendous potential as garden plant. As a part of ex-situ conservation and popularization of the species, seed longevity was studied by understanding the relationship of seed viability with respect to different moisture contents and storage temperature. Seeds are recognized as recalcitrant, being desiccation as well as chilling sensitive. During hermetic storage, seeds stored at 300C/70%RH retained viability for about 5 months and 4 months in 200C/20% RH. Seeds can be best stored for five months in laboratory conditions.

Seed storage and germination studies of Garcinia talbotii Raizada ex Santapau seeds - an endemic tree from Western Ghats of India

2016 ◽  
Vol 23 (2) ◽  
pp. 73-78
Author(s):  
T. Sabu ◽  
P.S. Shameer ◽  
Chitra Rajeswary ◽  
N. Mohanan ◽  
C. Anilkumar
Keyword(s):  
Ex Situ Conservation ◽  
Storage Temperature ◽  
Seed Viability ◽  
Seed Storage ◽  
Ex Situ ◽  
Hermetic Storage ◽  
Western Ghats Of India ◽  
Relationship Of ◽  
The Relationship ◽  
And Storage

Seeds of Garcinia talbotii remained viable hardly for two weeks in open room conditions. As part of ex-situ conservation of Garcinia talbotii, seeds longevity was studied since seeds are the main propagule. For this, the relationship of seed viability with respect to different moisture content and storage temperature were analyzed. Seed storage behaviour is also investigated. Being recalcitrant, seeds are desiccation sensitive as well as chilling sensitive. During hermetic storage of seeds at 300C /70 % RH seeds retained viability about 6 months.

New Model to Promote Well-Being in Work Areas of an Aerospace Industry Facility in Mexicali

2022 ◽  
pp. 150-172
Author(s):  
Carlos Raul Navarro Gonzalez ◽  
Juan Ceballos-Corral ◽  
Olivia Yessenia Vargas-Bernal ◽  
Gustavo Lopez Badilla ◽  
Judith M. Paz-Delgadillo
Keyword(s):  
Working Conditions ◽  
Aerospace Industry ◽  
Cost Benefit ◽  
Well Being ◽  
Industrial Operations ◽  
The Cost ◽  
Relationship Of ◽  
The Relationship ◽  
The City ◽  
Health And Well Being

This investigation was made to evaluate the health and well-being of workers who made activities in the manufacturing processes of an aerospace industry installed in the city of Mexicali and based on the evidence presented in certain stages of a production line. The cost-benefit of applying ergonomic methods was analyzed, developing a descriptive model, which involved important aspects. Said aspects analyzed were (1) work methods, (2) training of employees in the operational area, (3) evaluation of times and movements of industrial operations, and (4) working conditions as the relationship of workers with supervisors and managers.

Survey of Cyclohexylamine Content of Food Products Containing Cyclamates

1970 ◽  
Vol 53 (6) ◽  
pp. 1120-1128
Author(s):  
T Fazio ◽  
J W Howard ◽  
E O Haenni
Keyword(s):  
Weight Control ◽  
Food Product ◽  
Storage Conditions ◽  
Major Type ◽  
Processing And Storage ◽  
Relationship Of ◽  
The Relationship ◽  
And Storage ◽  
Hydrolysis Of ◽  
Content Range

Abstract A national survey was conducted to ascertain the relationship of the cyclohexylamine content of cyclamate-containing products to their composition, processing, and storage conditions. Cyclohexylamine was found in 174 of the 232 samples examined. The cyclohexylamine content range for each major type of food product was as follows: 0.0–8.2 ppm for carbonated beverages; 0.0–5.8 ppm for dry beverage bases; 0.0–1.5 ppm for fruit juices; 0.0–0.8 ppm for weight control foods; and 0.3–66 ppm for food sweetener preparations (liquid and dry base). No correlation between the cyclamate content of products and the cyclohexylamine present was evident. However, the findings indicate that significant hydrolysis of cyclamate can occur.

The Behavior Simulation of Manufacturing Services in a Service-Oriented Networked Manufacturing Environment

2017 ◽  
Author(s):  
Jingbo Wang ◽  
Ping Lou ◽  
Xuemei Jiang ◽  
Qin Wei ◽  
YongZhi Qu
Keyword(s):  
Bipartite Network ◽  
Networked Manufacturing ◽  
Efficient Operation ◽  
Agent Based ◽  
Behavior Simulation ◽  
Service Oriented ◽  
Geographically Distributed ◽  
The Cost ◽  
Relationship Of ◽  
The Relationship

In a service-oriented networked manufacturing (SONM) environment, geographically distributed manufacturing resources are encapsulated as various manufacturing services. These manufacturing services release via the Internet and can provide services on the demand of manufacturing tasks. Usually one manufacturing task needs several different services belonged to different organizers to work together. Hence, effective cooperation among services is the foundation of the efficient operation of SONM. In this paper, a bipartite network model is presented to describe the relationship of two different kinds of nodes in SONM, and also is projected as a weighed network for further exploring the behaviors of service nodes. Furthermore, an agent-based model is built for modeling the interactive behaviors of service nodes in a cooperative network and an agent-based simulating system is developed with Repast. The simulation results show that the emergence of cooperative behaviors among service nodes is related to both the cost of cooperation and initial trust of services in the SONM environment.

scholarly journals Inhibition of Ethylene Biosynthesis and Perception by 1-Methylcyclopropene and Its Consequences on Chlorophyll Catabolism and Storage Quality of ‘Bosc’ Pears

2017 ◽  
Vol 142 (2) ◽  
pp. 92-100 ◽  
Author(s):  
Xingbin Xie ◽  
Congbing Fang ◽  
Yan Wang
Keyword(s):  
Titratable Acidity ◽  
Ethylene Biosynthesis ◽  
Chlorophyll Degradation ◽  
Storage Quality ◽  
Control Fruit ◽  
Relationship Of ◽  
Ethylene Production Rate ◽  
The Relationship ◽  
And Storage

Bosc is a winter cultivar of european pear (Pyrus communis) that has a relatively short storage life partially due to a high ethylene production rate (EPR) during cold storage. ‘Bosc’ pears were harvested at commercial maturity and treated with gas 1-methylcyclopropene (1-MCP) at 0, 0.15, and 0.3 µL·L−1 and stored at −1.1 °C for 8 months. Results indicated that all 1-MCP treatments inhibited EPR and respiration rate (RR), retarded the degradation of chlorophyll and titratable acidity (TA), and extended storage quality; but inhibited ripening capacity. 1-MCP at 0.15 and 0.3 µL·L−1 had the same efficacy on keeping fruit quality although its higher rate was more efficient on inhibiting EPR and RR. The expression of ethylene synthesis genes (PcACS1, PcACS2, PcACS4, PcACS5, and PcACO1) and receptor genes (PcETR1, PcETR2, and PcERS1) was upregulated in control fruit during storage and they were downregulated significantly by 1-MCP treatments. In contrast, the ethylene receptor genes of PcETR5 and PcCTR1 were downregulated in control fruit during storage and were unaffected by 1-MCP treatments. Although the transcription levels of chlorophyll degradation genes PcPPH, PcNOL, PcSGR, PcRCCR, PcNYC, and PcPAO were all upregulated in control fruit during storage and downregulated by 1-MCP; only PcCHL was downregulated in the control and 1-MCP had no consistent effect on it. The relationship of ethylene biosynthesis/perception with chlorophyll degradation and storage quality in european pears was discussed.

scholarly journals Correlation of age, height, and gender with +Gz tolerance among healthy Indian participants

2020 ◽  
Vol 64 ◽  
pp. 14-17
Author(s):  
S Kasture ◽  
M Sharma ◽  
MS Nataraja
Keyword(s):  
High Performance ◽  
Aerospace Medicine ◽  
Factors Affecting ◽  
Modifiable Factors ◽  
Males And Females ◽  
The Mean ◽  
And Gender ◽  
Microsoft Office ◽  
Relationship Of ◽  
The Relationship

Introduction: Aircrew are repetitively exposed to positive Gz acceleration in fighter flying. Factors affecting +Gz tolerance vary among individuals and are determined by both modifiable and non-modifiable factors. Some of the non-modifiable factors influencing +Gz tolerance are age, gender, and height. The present study was undertaken to understand the relationship of these variables with relaxed +Gz tolerance. Material and Methods: The study involved a retrospective analysis of existing database of the high-performance human centrifuge at the Institute of Aerospace Medicine. Relevant data from 70 non-aircrew subjects were included for the study. Of these, 39 were male and 31 were female. The age and height varied from 27 to 38 years and 157 to 187 cm, respectively. The data were analyzed using Microsoft Office Excel® to find the correlation between age and height with relaxed +Gz tolerance. Relaxed +Gz tolerance of men and women was compared using unpaired t-test. Significance was set at P < 0.05. Results: The mean age, height, and relaxed +Gz tolerance of males were found to be 30.25 ± 4.3 years, 172.58 ± 6.5 cm, and 4.89 ± 0.67G, respectively, whereas those of females were 27.28 ± 3.36 years, 158.46 ± 6.78 cm, and 4.4 ± 0.85G, respectively. In both males and females, age and height showed no correlation with relaxed +Gz tolerance. However, the relaxed +Gz tolerance was found to be higher in males and this difference was statistically different (P = 0.008). Conclusion: Age and height showed no correlation with relaxed +Gz tolerance in both males and females nonaircrew subjects. Males exhibited a statistically significant, higher relaxed +Gz tolerance as compared to females.

scholarly journals Pengaruh Penerapan E-Filing Dan Pengetahuan Perpajakan Terhadap Kepatuhan Wajib Pajak Dengan Biaya Kepatuhan Sebagai Variabel Moderasi

2019 ◽  
Vol 1 (3) ◽  
pp. 1510-1517
Author(s):  
M. Ardhy Erwanda ◽  
Henri Agustin ◽  
Erly Mulyani
Keyword(s):  
Regression Analysis ◽  
Sampling Method ◽  
Primary Data ◽  
Significant Positive Effect ◽  
Compliance Costs ◽  
Analysis Technique ◽  
The Cost ◽  
Relationship Of ◽  
The Relationship ◽  
Positive Effect

This study aims to determine the effect of applying e-filing and knowledge of taxation on taxpayer compliance. Compliance costs as moderating variable that moderate relations between application e-filing and knowledge taxation on the taxpayer compliance. The population in this study is taxpayers in Padang city. The number off samples used was 100 respondents with the sampling method using purposive sampling. The data used in this study are primary data. Data collection techniques are done by questionnaire. The data analysis technique used is multiple regression and moderated regression analysis. The results obtained are the application of e-filing has a significant positive effect on taxpayer compliance, knowledge of taxation does not affect taxpayer compliance, compliance costs proved to moderate the relationship between the implementation of e-filing and taxpayer compliance, and the cost of compliance was not proven to moderate the knowledge relationship of taxation with taxpayer compliance

scholarly journals Simulation of the System of Repairs of Apartment Buildings

2019 ◽  
Vol 97 ◽  
pp. 03016
Author(s):  
Serafima Sokova ◽  
Vladimir Kalinin
Keyword(s):  
Housing Stock ◽  
Integrated Approach ◽  
Safe Operation ◽  
Apartment Buildings ◽  
Current State ◽  
The Cost ◽  
Relationship Of ◽  
The Relationship ◽  
Real State

the main issue of the study is the problem of improving the efficiency of the housing sector. The current state system does not ensure the proper efficiency of the housing stock, which is increasingly manifested in the growing gap between the cost of operation of apartment buildings, aimed at ensuring the quality of their functioning and the real state of this quality. In recent years, numerous regulatory documents have been adopted to ensure the normal maintenance of buildings, but a comprehensive understanding of the relationship of various activities with technical and economic solutions, in most cases, has an empirical nature, not confirmed by a strict analytical justification. The purpose of the study is a systematic integrated approach to solving problems to improve the efficiency of maintenance of housing using the proposed mathematical apparatus, which allows you to objectively, fully and accurately assess the relationship of economic and technical indicators. All total socially significant economic indicators of operational measures can be the basis of legislative regulation in the industry. Conclusions: criteria for assessing the effective and safe operation of buildings, optimal for residents of apartment buildings and management companies serving these houses.

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