An Evaluation of Quality Improvement Methods Regarding Output Power of Wind Plants` Inverters

Today, with respect to the problems derived from non-renewable energy such as environment pollution, increasingly growth of fossil fuels` costs and the process of running out of sources; using renewable energies has been highly considered. Meanwhile, wind energy has widely been utilized. Integrating wind energy within power systems minimizes their effects on environment while connecting wind generation systems within power systems causes technical challenges such as the problems related to power quality, voltage regulation and sustainability where power quality is of highest importance. The present study attempts to evaluate the methods of improving inventers` quality in wind plants. To this purpose, “Space vector pulse width modulation”, “using STATCOM” and “using UPQS” to improve power quality are discussed

The Mediation Role of Marketing Orientation in Relationship between Environmental Friendliness with Customer Green Intention Buying

As green marketing becomes an essential tool for sustainable business strategy, companies are adopting green marketing practices to achieve better business performance. However, no research has yet operationalized all the organizational facets that are necessary to become a green marketing oriented company. The main purpose of this study is evaluating the impact of environmental friendliness on customer green intention buying with regarding marketing orientation. 12 Hypotheses were generated based on conceptual model. The sample includes 390 customers of Kalleh Company in Iran. The research is based on structural equation modeling (SEM) based on variation (partial least square) and path analysis. The collected data were analyzed by PLS software. The result revealed that there are positive and significant relationship between variables except tactical green marketing orientation and green satisfaction which is not significant. This researchs findings guide managers to develop their business and performance strategies and results and help them to improve the level of customers behaviors. KeyWords marketing orientation, Environmental, customer green intention buying, green trust, green satisfactio

An Evaluation of Quality Improvement Methods Regarding Output Power of Wind Plants` Inverters

Today, with respect to the problems derived from non-renewable energy such as environment pollution, increasingly growth of fossil fuels` costs and the process of running out of sources; using renewable energies has been highly considered. Meanwhile, wind energy has widely been utilized. Integrating wind energy within power systems minimizes their effects on environment while connecting wind generation systems within power systems causes technical challenges such as the problems related to power quality, voltage regulation and sustainability where power quality is of highest importance. The present study attempts to evaluate the methods of improving inventers` quality in wind plants. To this purpose, “Space vector pulse width modulation”, “using STATCOM” and “using UPQS” to improve power quality are discussed

Geotechnical behaviour of the carbonate sand-granulated tire mixture

149-155Carbonate sand-tire mixture is used in this research as a soil improvement method to address the environmental problems regarding the accumulation of scrap tires in coastal areas. The stress-strain behaviour, internal friction angle, and the particle breakage of the carbonate sand-tire mixture are studied, and the results are compared to that of pure carbonate sand. The results revealed that the addition of the granulated tires to the carbonate sand changed its behaviour. The addition of granulated tires resulted in a decrease of both the friction angle and the quantity of particle breakage

CPA on Hardware Implementation of COLM Authenticated Cipher and Protect it with DOM Masking Scheme

Authenticated encryption schemes provide both confidentiality and integrity services, simultaneously. Correlation power analysis (CPA) can be a thread for authenticated ciphers, like all physical implementations of any cryptographic system. In this paper, for the first time, a three-steps CPA attack against COLM, one of the winners of CAESAR, is presented to indicate its vulnerability. For this purpose, in this research paper, this authenticated encryption scheme is implemented on the FPGA of the SAKURA-G board and, by measuring and collecting 1,800 power traces, a successful CPA attack with zero value power model has been mounted on it. In addition, a protected hardware architecture for the COLM is proposed to make this design secure against first-order CPA attacks. To this end, a domain-oriented masking (DOM) scheme with two inputs/outputs share is used to protect the COLM. To verify the security of these countermeasures, we mounted a first and second-order CPA attack and a non-specified t-test on the protected COLM

Particle fractionation controls Escherichia coli release from solid manure

Bacteria transport through soil is a complex process particularly when the cells are released from solid manures and co-transported with particles. This study focuses on understanding of the Escherichia coli release from different particle fractions (0.25-, 0.5-, 1-, and 2-mm) of solid manure and evaluating different influent boundary conditions during cell release from manure and when a solid manure is applied to the soil. The 0.25-mm and 2-mm particle sizes resulted a greater cell release compared to 0.5-mm and 1-mm fractions (p < 0.05). The shape and magnitude of the cell release curves (CRCs) from the original manure bulk were mainly influenced by the two 0.25-mm and 2-mm fractions, respectively. The arithmetic mean for normalizing the CRCs and the time variable- based normalized CRCs for the manure-treated soil were the robust variables in evaluation of the experimental data. However, a single maximum bacteria concentration could provide the realistic dataset for the modeling process. Evaluation of the root-mean-squared-error and Akaike criterion showed that the two- and three-parametric models are recommended for simulating the cell release from solid manure in comparison with one parametric models. This study also suggests considering separate microbial release evaluations, with regards to influent concentration, for manure and manure-treated soils to propose best management practices for controlling bacteria pollution. Further research will reveal the key roles of different woody components and soluble material ratios for the various solid manures in bacteria release

Hydrogen embrittlement behavior in FeCCrNiBSi TRIP steel

The effect of plastic deformations on the hydrogen embrittlement (HE) of transformation-induced plasticity (TRIP) steel was studied. In situ tensile tests showed that with increasing hydrogen current density, total elongation loss was raised to 36.8% as compared to an uncharged specimen. The electron backscatter diffraction (EBSD) observation indicated that hydrogen charging decreased stacking fault energy (SFE), resulting in the formation of more α′- martensite by both indirect and direct transformation. The α′- martensite volume fraction at the same degree of deformation in uncharged and charged samples was 31% and 39%, respectively. With plastic deformation, reversible trap sites were raised because of the increased dislocation density and the formation of α′- martensite, which was obtained from EBSD characterization and had a good correlation with the results of the thermal desorption spectroscopy (TDS) analysis

Particle fractionation controls Escherichia coli release from solid manure

Funding Information: This work was supported by Shahrekord University . Nasrollah Sepehrnia was supported by Alexander von Humboldt Foundation and Postdoctoral Fellowship at Leibniz University of Hannover, Germany. Publisher Copyright: © 2021 The Author(s)Peer reviewedPublisher PD

Prevalence of qnr, intI, and intII genes in extendedspectrum beta-lactamase (ESBL)-producing Escherichia coli isolated from clinical samples in Iran

Purpose: To investigate the prevalence of qnr, intI, and intII genes in extended spectrum betalactamase (ESBL)-producing Escherichia coli isolated from clinical samples in Kerman, Iran.Methods: A total of 127 E. coli were collected from clinical samples in Kerman hospitals. The antibiotic susceptibility test was performed using disc diffusion method, while the presence of ESBL-producing E. coli was determined by phenotypic confirmatory test. Furthermore, the presence of qnrA, qnrB, qnrS, intI, intII, and β-lactamase-encoding genes was detected by polymerase chain reaction (PCR). Finally, the data were analyzed and associations between different genes and antibiotic resistance were evaluated.Results: The highest and lowest rates of resistance were observed against ampicillin (72.4 %) and imipenem (2.3 %), respectively. Also, 41.7 % of the isolates produced ESBL-enzymes. The qnrS and genes were detected in 6.3 and 0.78 %, respectively, of the isolates, while qnrA gene was not detected in the current study. The results revealed that 64.5 and 10.2 % of isolates carried intI and intII genes, respectively. Data analysis showed a significant association between ESBL production and class I integrin gene in E. coli isolates.Conclusions: Due to the variation in the resistance patterns of E. coli against antibiotics in different geographical regions, antimicrobial treatments should be based on local experience. Also, the coexistence of ESBL and intI gene in the majority of E. coli isolates suggests that care should be taken in choosing antibiotic therapy.Keywords: Extended-spectrum β-lactamase, E. coli, Integrin, Imipenem, Bacterial genes, Antibiotic resistanc

Geotechnical behaviour of the carbonate sand-granulated tire mixture

Carbonate sand-tire mixture is used in this research as a soil improvement method to address the environmental problems regarding the accumulation of scrap tires in coastal areas. The stress-strain behaviour, internal friction angle, and the particle breakage of the carbonate sand-tire mixture are studied, and the results are compared to that of pure carbonate sand. The results revealed that the addition of the granulated tires to the carbonate sand changed its behaviour. The addition of granulated tires resulted in a decrease of both the friction angle and the quantity of particle breakage