A Highly Selective and Sensitive Calcium(II)-Selective PVC Membrane Based on Dimethyl 1-(4-Nitrobenzoyl)-8-oxo-2,8-dihydro-1H-pyrazolo[5,1-a]isoindole-2,3-dicarboxylate as a Novel Ionophore

Zamani, Hassan Ali,Abedini-Torghabeh, Javad,Ganjali, Mohammad Reza Korean Chemical Society 2006 Bulletin of the Korean Chemical Society Vol.27 No.6

Dimethyl 1-(4-nitrobenzoyl)-8-oxo-2,8-dihydro-1H-pyrazolo[5,1-a]isoindole-2,3-dicarboxylate has been used as an ionophore and o-nitrophenyloctyl ether as a plasticizer in order to develop a poly(vinyl chloride)-based membrane electrode for calcium ion detection. The sensors exhibit significantly enhanced response towards calcium(II) ions over the concentration range $8.0{\times}10^{-7}\;1.0{\times}10^{-1}$ M at pH 3.0-11 with a lower detection limit of $5.0 {\times}10^{-7}$ M. The sensors display Nernstian slope of 29.5 ${\pm}$ 0.5 mV per decade for Ca(II) ions. Effects of plasticizers, lipophilic salts and various foreign common ions are tested. It has a fast response time within 10 s over the entire concentration range and can be used for at least 2 months without any divergence in potentials. The proposed electrode revealed good selectivity and response for $Ca^{2+}$ over a wide variety of other metal ions. The selectivity of the sensor is comparable with those reported for other such electrodes. The proposed sensor was successfully applied as an indicator electrode for the potentiometric titration of a Ca(II) solution, with EDTA.

Dynamics and Stable Gait Planning of a Quadruped Robot

Ali Zamani,Mahdi Khorram,S. Ali A. Moosavian 제어로봇시스템학회 2011 제어로봇시스템학회 국제학술대회 논문집 Vol.2011 No.10

In this paper, dynamics and gait planning of a quadruped robot is discussed. To this end, using Lagrangian method the equations of motion are first derived. Then, an approach is proposed to eliminate the terms corresponding to the constraints caused by the feet on the ground. The obtained dynamics model is validated using Matlab SimMechanics. Finally, gait planning of the robot is developed such that the robot can walk with a given speed over a flat terrain while the robot center of mass remains inside the support polygon. Obtained results reveal stable walking of a quadruped robot based on the proposed approach.

A new control approach for seismic control of buildings equipped with active mass damper: Optimal fractional-order brain emotional learning-based intelligent controller

Abbas-Ali Zamani,Sadegh Etedali 국제구조공학회 2023 Structural Engineering and Mechanics, An Int'l Jou Vol.87 No.4

The idea of the combination of the fractional-order operators with the brain emotional learning-based intelligent controller (BELBIC) is developed for implementation in seismic-excited structures equipped with active mass damper (AMD). For this purpose, a new design framework of the mentioned combination namely fractional-order BEBIC (FOBELBIC) is proposed based on a modified-teaching-learning-based optimization (MTLBO) algorithm. The seismic performance of the proposed controller is then evaluated for a 15-story building equipped with AMD subjected to two far-field and two near-field earthquakes. An optimal BELBIC based on the MTLBO algorithm is also introduced for comparison purposes. In comparison with the structure equipped with a passive tuned mass damper (TMD), an average reduction of 44.7% and 42.8% are obtained in terms of the maximum absolute and RMS top floor displacement for FOBELBIC, while these reductions are obtained as 30.4% and 30.1% for the optimal BELBIC, respectively. Similarly, the optimal FOBELBIC results in an average reduction of 42.6% and 39.4% in terms of the maximum absolute and RMS top floor acceleration, while these reductions are given as 37.9% and 30.5%, for the optimal BELBIC, respectively. Consequently, the superiority of the FOBELBIC over the BELBIC is concluded in the reduction of maximum and RMS seismic responses.

A Highly Selective and Sensitive Calcium(II)-Selective PVC Membrane Based on Dimethyl 1-(4-Nitrobenzoyl)-8-oxo-2,8-dihydro-1H-pyrazolo[5,1-a]isoindole-2,3-dicarboxylate as a Novel Ionophore

Hassan Ali Zamani*,Javad Abedini-Torghabeh,Mohammad Reza Ganjali 대한화학회 2006 Bulletin of the Korean Chemical Society Vol.27 No.6

An Investigation to Produce Virus-Free Plants in Two Iranian Grapevine Cultivars

Ali Ebadi,Alireza Salami,Mina Koohi Habibi,Zabihollah Zamani 한국원예학회 2006 한국원예학회 기타간행물 Vol.- No.-

Assessment of Morphological Variation between Some Iranian Wild Cerasus Sub-genus Genotypes

Ali Shahi-Gharahlar,Zabihollah Zamani,Mohammad Reza Fatahi,Naser Bouzari 한국원예학회 2010 Horticulture, Environment, and Biotechnology Vol.51 No.4

Iran is one of the important countries for the distribution of Cerasus subgenus species with around 225,000 tons production of cherries. Together with Turkey and USA it has been one among the three leading producers of these fruits. One of the important aims in cherry breeding is developing dwarfing rootstocks with good adaptation with different climates and resistance to biotic and abiotic stresses. A program has been initialized in Iran for breeding and developing new rootstocks for cherries, suitable for climatic and edaphic condition of this country. The present study was conducted under this program to categorize some Cerasus sub-genus wild genotypes and improved cultivars and rootstocks, by using vegetative characters. Conservation of the genetic resources of these species is another important aim of this program. Around 27 morphological parameters were evaluated on 74 genotypes in seven species of this sub-genus from eight provinces of Iran. These consisted of P. avium L., P. cerasus L., P. mahaleb L., P. incana Pall., P. brachypetala Boiss., P. pseudoprostrata Pojark. and P. microcarpa Bioss. Analysis of variance of the studied parameters was significant among genotypes, showing a high level of variability for the characters. Results of simple correlation analysis showed the existence of significant positive and negative correlations among some important parameters such as tree height, tree growth habit, trunk diameter, internode length, growth compactness and leaf area. Also, factor analysis showed that tree growth habit, height, growth compactness, trunk diameter, internode length, pubescence on the leaf upper surface and number of leaf serration per cm constitute the main factors. Effective characters were categorized within six factors and accounted for 77.74 of overall variance. Cluster analysis was performed using these six factors and genotypes in the approximate distance of 13 were divided into six main groups. These groups were divided into several sub-clusters and improved varieties or cultivars were clearly separated from the others. The P. cerasus cultivars and genotypes together with one genotype of the P. avium and improved rootstocks (‘Gisela6’ and ‘Colt’) located in one sub-cluster. Scatter plot analysis using two main factors could also clearly separate the location of genotypes and verified genotypes from each other.

Anti-Proliferative Effects of Dendrophthoe pentandra Methanol Extract on BCR/ABL-Positive and Imatinib-Resistant Leukemia Cell Lines

Zamani, Afiqah,Jusoh, Siti Asmaa Mat,Al-Jamal, Hamid Ali Nagi,Sul'ain, Mohd Dasuki,Johan, Muhammad Farid Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.11

Background: Imatinib mesylate, a tyrosine kinase inhibitor specifically targeting the BCR/ABL fusion protein, induces hematological remission in patients with chronic myeloid leukemia (CML). However, the majority of CML patients treated with imatinib develop resistance with prolonged therapy. Dendrophthoe pentandra (L.) Miq. is a Malaysian mistletoe species that has been used as a traditional treatment for several ailments such as smallpox, ulcers, and cancers. Methods: We developed a resistant cell line (designated as K562R) by long-term co-culture of a BCR/ABL positive CML cell line, K562, with imatinib mesylate. We then investigated the anti-proliferative effects of D. pentandra methanol extract on parental K562 and resistant K562R cells. Trypan blue exclusion assays were performed to determine the IC50 concentration; apoptosis and cell cycle analysis were conducted by flow cytometry. Results: D. pentandra extract had greater anti-proliferative effects towards K562R ($IC50=192{\mu}g/mL$) compared to K562 ($500{\mu}g/mL$) cells. Upon treatment with D. pentandra extract at the IC50. concentration: K562 but not K562R demonstrated increase in apoptosis and cell cycle arrest in the G2/M phase. Conclusion: D. pentandra methanol extract exerts potent anti-proliferative effect on BCR/ABL positive K562 cells.

Enhancing the Thermostability of Cellulase from Clostridium thermocellum via Salt Bridge Interactions

Reyhane Zamani,Sayyed Shahryar Rahpeyma,Moein Aliakbari,Mousa Naderi,Mohsen Yazdanei,Saeed Aminzadeh,Jafar Khezri,Kamahldin Haghbeen,Ali Asghar Karkhane 한국생물공학회 2023 Biotechnology and Bioprocess Engineering Vol.28 No.4

Improving the thermal stability of enzymes is an essential factor in the industrial applications of enzymes. Many methods related to increased thermal stability were explained, and increasing salt bridges is one of the strategies for improving the thermal stability of enzymes. In this study, mutations T59E, I145R, N149R, V219D, and A262R are introduced into the native cellulase gene to produce the mutant 5M-cel5E cellulase. In silico results showed that the mutation increased the salt bridges from 15 to 28. Root mean square fluctuation (RMSF) calculations confirmed that the mutation increased protein stability. Furthermore, the docking results showed that the affinity of cellobiose for the 5M-cel5E active site (-122.759) was slightly decreased compared to native cellulase (-130.93). No enzymatic activity was found in 5M-cel5E cellulase after cloning, expression and purification. Activated the enzyme with a back mutation of R149N, the result of which was named 4M-cel5E. The last mutation increases the salt bridges from 15 to 22, creating 4 salt bridge networks. The 4M-cel5E enzyme exhibited a maximum activity of 463 U/mg at pH 6.0 and 45°C. The mutations also increased the enzyme thermal stability up to 1.5 and 3.4-fold at temperatures of 65 and 67oC, respectively. These mutations made the Clostridium thermocellum cellulase suitable for various industries such the biofuel and paper.

Nonlinear large deformation dynamic analysis of electroactive polymer actuators

Amir Ali Amiri Moghadam,Abbas Kouzani,Reza Zamani,Kevin Magniez,Akif Kaynak 국제구조공학회 2015 Smart Structures and Systems, An International Jou Vol.15 No.6

Electroactive polymers have attracted considerable attention in recent years due to their sensing and actuating properties which make them a material of choice for a wide range of applications including sensors, biomimetic robots, and biomedical micro devices. This paper presents an effective modeling strategy for nonlinear large deformation (small strains and moderate rotations) dynamic analysis of polymer actuators. Considering that the complicated electro-chemo-mechanical dynamics of these actuators is a drawback for their application in functional devices, establishing a mathematical model which can effectively predict the actuator’s dynamic behavior can be of paramount importance. To effectively predict the actuator’s dynamic behavior, a comprehensive mathematical model is proposed correlating the input voltage and the output bending displacement of polymer actuators. The proposed model, which is based on the rigid finite element (RFE) method, consists of two parts, namely electrical and mechanical models. The former is comprised of a ladder network of discrete resistive-capacitive components similar to the network used to model transmission lines, while the latter describes the actuator as a system of rigid links connected by spring-damping elements (sdes). Both electrical and mechanical components are validated through experimental results.

The Interrelationship of Agronomic and Physiological Traits as Affected by Irrigation Regimes in Wheat: Application of Multivariate Statistical Analyses

( Samaneh Zamani-babgohari ),( Bahram Heidari ),( Ali Dadkhodaie ) 한국육종학회 2017 Plant Breeding and Biotechnology Vol.5 No.3

Understanding the interrelationships between agronomic and water status characters helps development of drought tolerant cultivars. In the present study, 34 wheat genotypes were used to investigate joint variability of water status characters and yield related traits under normal irrigation regimes and drought stress in 2014-2015 growing season. The results indicated that selection of genotypes based on loadings in factors number 1, 3 and 4 would be of beneficial in terms of increasing grain yield related traits under drought stress conditions. In canonical correlation analysis (CCA), the first (U1, V1) and second (U2, V2) pairs canonical variables (CV) explained 75% and 67% of the total joint variability of agronomic and physiological traits under drought stress conditions, respectively. The first (V1) physiological CV that had positive correlation with water saturated deficit (WSD, r = 0.63) and excised leaf water loss (ELWL, r = 0.35) was more correlated with grain yield and harvest index under drought stress. The second (V2) physiological CV which was more influenced by variations in initial water content (IWC, r = 0.6) and leaf water content (LWC, r = 0.65) was associated with spike length and spikelet per spike variations. Significant between-groups mean squares advocated that classification of genotypes into four groups was the best possible branching under both conditions. Therefore, making crosses between genotypes of cluster numbers 1 (with high grain yield and its components) and 3 (having shortest height) can be used for the production of extreme or novel phenotypes for grain yield and dwarfness in the progenitors in further breeding programs for drought tolerance.