The size dependence of the magnetic properties of ZnO and Zn1-xNixO nanoparticles

In this paper, a monitoring and diagnosis system based on neural network model is proposed (gear bearing-combined faults). Data sets are collected from vibration signals, measured by pseudo-electric accelerometer fixed on various measuring points of an experimental setup (gearbox test rig designed and manufactured especially for this work). Time and frequency analyses are then conducted to determine statistical parameters (root mean square (RMS) value, mean square value, variance, kurtosis factor, crest factor, and clearance factor or margin factor) and spectrums (fast Fourier transform). The time domain parameters and the defects of binary codes are used as input and output data, to train and test the neural network model. Moreover, the L27 Taguchi standard orthogonal array and Grey-Taguchi method are used as multi-objective optimization approaches, to find the best neural network model architecture. The results show the applicability and effectiveness, of the proposed system, for monitoring and diagnosis of rotating machinery. They can be extended efficiently to study other faults and mechanisms.

Multi-objective optimization of ANN fault diagnosis model for rotating machinery using grey rational analysis in Taguchi method

Optimized rapamycin-loaded PEGylated PLGA nanoparticles: Preparation, characterization and pharmacokinetics study

Ozonolysis of straw from Secale cereale L. for anaerobic digestion

The application of nanomaterials in the construction field is allowing the development of smart, green, durable and more efficient buildings. Among the most widely researched nanomaterials are nanosized cool pigments, which are being enforced to achieve thermal and energy-efficient facades, with the development of high reflectance and retro-reflectance coatings. Their peculiar optical and catalytic activity turns nanomaterials into suitable candidates to be used as dark coloured high solar reflectance without affecting aesthetic characteristics, thus improving the durability of coatings. The objective of this paper is to review the state-of-the-art on the benefits of using high reflectance nanopigments as coatings in building facades and their production and synthesis processes. It is thus divided into three main topics: (i) the benefits of using nanopigments on facades, (ii) the most important nanomaterials used as cool pigments and (iii) the main methods of synthesizing nanopigments. One expects that the study of near-infrared nanopigmentation synthesis processes will be able to promote and disseminate the use of nanotechnology in construction, assessing the production problems and limitation and thus helping to disseminate new products by reducing production costs and increase availability.

Nanomaterials with high solar reflectance as an emerging path towards energy-efficient envelope systems: a review

Optimization of parameters for the synthesis of Y2Cu2O5 nanoparticles by Taguchi method and comparison of their magnetic and optical properties with their bulk counterpart

Color parameters of Y2Cu2O5 green-blue nanopigments fabricated by the sol-gel combustion method and their efficiency for coloring the glazed tiles

The blue phase of YBa2Cu3O7- δ (YBCO) family, Y2Cu2O5 (Y202) nanoparticles were prepared and doped into (YBCO) superconductor and the effect of doping on critical current density and critical tempe...

Influence of Y2Cu2O5 nanoparticles doping on superconducting properties of YBa2Cu3O7-δ

Heat Transfer, Thermophysical and Rheological Behavior of Highly Stable Few-Layers of H-Bn Nanosheets/Eg-Based Nanofluid

Background: Rhinoplasty is a complex but popular surgery in Iran. The main complications of the surgery are post-operative bleeding and nasal septal hematoma due to poor intra-operative controlled hypertension. This study aimed to compare the efficacy of isoflurane-remifentanil (I-R) versus propofol-remifentanil (P-R) to induce controlled hypotension and to assess surgeon satisfaction with each of these combinations during rhinoplasty. Methods: In 2020-2021, a single-blind clinical study was conducted on 98 patients aged 18-50 years undergoing rhinoplasty at Mother and Child Hospital (Shiraz, Iran). Patients were randomly divided into P-R (n=48) and I-R (n=50) groups. Changes in systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP), and heart rate (HR) were assessed during surgery and in the recovery room. A questionnaire was used to evaluate the level of surgeon satisfaction. Data were analyzed using independent samples t test, Chi-square test, and repeated measures ANOVA with SPSS software. P<0.05 was considered statistically significant. Results: Five minutes after anesthesia induction, the P-R combination had a greater effect on reducing SBP (P=0.010), DBP (P=0.007), MAP (P=0.003), and HR (P=0.026) than I-R. However, from the 40th minute to the end of surgery and after 30 minutes of recovery, the I-R combination had a slightly better effect on blood pressure reduction than P-R. There was no difference in surgeon satisfaction with either of the two drug combinations. Conclusion: Both P-R and I-R combinations are recommended to induce hypotension during rhinoplasty. However, I-R is more effective than P-R in inducing the desired controlled hypotension.

Efficacy of Isoflurane-Remifentanil versus Propofol-Remifentanil on Controlled Hypotension and Surgeon Satisfaction in Rhinoplasty: A Single-Blind Clinical Trial Study

Zahra Rafati

Papers

Optimization of parameters for the synthesis of Y2Cu2O5 nanoparticles by Taguchi method and comparison of their magnetic and optical properties with their bulk counterpart

Color parameters of Y2Cu2O5 green-blue nanopigments fabricated by the sol-gel combustion method and their efficiency for coloring the glazed tiles

Influence of Y2Cu2O5 nanoparticles doping on superconducting properties of YBa2Cu3O7-δ

Heat Transfer, Thermophysical and Rheological Behavior of Highly Stable Few-Layers of H-Bn Nanosheets/Eg-Based Nanofluid

Efficacy of Isoflurane-Remifentanil versus Propofol-Remifentanil on Controlled Hypotension and Surgeon Satisfaction in Rhinoplasty: A Single-Blind Clinical Trial Study