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Isolation, Identification and Pathogenicity Assessment of a new Isolate of Entomopathogenic Fungus, Beauveria Bassiana in Iran
Seyed Ali Safavi
Journal of Plant Protection Research , 2010, DOI: 10.2478/v10045-010-0027-z
Abstract: A new isolate (BEH) of entomopathogenic fungus, Beauveria bassiana was isolated from soil using DOC2 selective medium. This isolate was characterized by conidiophores consisting of whorls and dense clusters of short conidiophorous cells with one-celled spherical conidia. Conidial length and width were 2.27±0.22 μm and 1.85±0.32 μm, respectively with length/width ratio of 1.23. Colonies on SDYA medium were normally white to pale yellow and sometimes red pigmented in reverse. Because of importance of this pathogen in biocontrol programs around the world and difficulties with morphological identification, a molecular technique was developed to assist complementary identification of the fungus. Pr1, a pathogenicity-related alkaline cuticle-degrading serine protease, with defined sequence in B. bassiana was amplified using PCR technique. The presence of this gene in isolated fungus (BEH) with 744 bp sequence length, as visualized on agarose gel affirmed the data from morphological studies that the new isolate (BEH) pertained to entomopathogenic fungus, B. bassiana. Pathogenicity of new isolate against Tenebrio molitor and its recovering was the other confirmation that the isolated fungus belonged to B. bassiana, using further light microscope studies.
Control of Three Stored Product Beetles with Artemisia haussknechtii (Boiss) (Asteraceae) Essential Oil
Seyed Mehdi Hashemi,Seyed Ali Safavi
Ecologia Balkanica , 2012,
Abstract: Fumigant toxicity of the essential oil of aerial parts from Artemisia haussknechtii (Boiss) (Asteraceae) was investigated against the cowpea weevil Callosobruchus maculatus (Fab.), the rice weevil Sitophilus oryzae (L.), and the red flour beetle Tribolium castaneum (Herbst). Dry ground plants were subjected to hydro distillation using a Clevenger type apparatus and the chemical composition of the volatile oil was studied by gas chromatography mass spectrometry (GC MS). The major components of the oil were camphor (29.24%), 1, 8 cineol (27.62%), yomogi alcohol (5.23%), and camphene (4.80%). The essential oil in same concentrations was assayed against (1 7 days old) adults of insect species and percentage mortality was recorded after 24, 48, and 72 h exposure times. LC50 values were varied between 19.84 and 103.59 μL L-1 air, depending on insect species and exposure time. Callosobruchus maculatus was more susceptible than other species. These results suggested that A. haussknechtii oil might have potential as a control agent against C. maculatus, S. oryzae and T. castaneum.
Chemical Constituents and Toxicity of Essential Oils of Oriental Arborvitae, Platycladus orientalis (L.) Franco, against Three Stored-Product Beetles Componentes Químicos y Toxicidad de Aceites Esenciales de Tuya Oriental, Platycladus orientalis (L.) Franco, contra Tres Escarabajos de Productos Almacenados
Seyed Mehdi Hashemi,Seyed Ali Safavi
Chilean Journal of Agricultural Research , 2012,
Abstract: Plant secondary metabolites play an important role in plant-insect interactions and therefore such compounds may have insecticidal or biological activity against insects. Fumigant toxicity of essential oils of leaves and fruits from oriental arborvitae (Platycladus orientalis (L.) Franco) (Cupressaceae) was investigated against adults of cowpea weevil (Callosobruchus maculatus Fab.), rice weevil (Sitophilus oryzae L.), and red flour beetle (Tribolium castaneum Herbst). Fresh leaves and fruits were subjected to hydrodistillation using a Clevenger-type apparatus and the chemical composition of the volatile oils was studied by gas chromatography-mass spectrometry (GC-MS). Twenty-six compounds (92.9%) and 23 constituents (97.8%) were identified in the leaf and the fruit oils, respectively. The major components of both leaves and fruits oils were α-pinene (35.2%, 50.7%), α-cedrol (14.6%, 6.9%) and Δ-3-carene (6.3%, 13.8%), respectively. Both oils in the same concentration were tested for their fumigant toxicity on each species. Results showed that leaf oils were more toxic than fruit oils against three species of insects. Callosobruchus maculatus was more susceptible than S. oryzae and T. castaneum. LC510 values of the leaf and the fruit oils at 24 h were estimated 6.06 and 9.24 μL L1 air for C. maculatus, 18.22 and 21.56 μL L-1 air for S. oryzae, and 32.07 and 36.58 μL L4 air for T. castaneum, respectively. These results suggested that P. orientalis oils may have potential as a control agent against C. maculatus, S. oryzae, and T. castaneum. Los metabolitos secundarios de las plantas juegan un papel importante en las interacciones planta-insecto, y por lo tanto pueden tener actividad insecticida o biológica en los insectos. La toxicidad fumigante de los aceites esenciales de hojas y frutos del árbol oriental de la vida (Platycladus orientalis (L.) Franco) (Cupressaceae) fue investigada contra adultos de gorgojo del guisante (Callosobruchus maculatus Fab.), gorgojo del arroz (Sitophilus oryzae L.), y escarabajo rojo de la harina (Tribolium castaneum Herbst). Las hojas frescas y las frutas fueron sometidas a hidrodestilación utilizando un aparato tipo Clevenger y la composición química de los aceites volátiles se estudió por cromatografía de gas-espectrometría de masa (GC-MS). Se identificaron 26 (92,9%) y 23 compuestos (97,8%) en los aceites de hoja y de frutos, respectivamente. Los componentes principales de los aceites de hojas y frutos fueron α-pineno (35,2%, 50,7%), α-cedrol (14,6%, 6,9%) y Δ-3-careno (6,3%, 13,8%), respectivamente. Ambos aceites fueron
Distributed Relay Beamforming in Cognitive Two-Way Networks: SINR Balancing Approach  [PDF]
Seyed Hamid Safavi, Mehrdad Ardebilipour
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2012, DOI: 10.4236/ijcns.2012.510070
Abstract: In this paper, we study the problem of distributed relay beamforming for a bidirectional cognitive relay network which consists of two secondary transceivers and K cognitive relay nodes and a primary network with a transmitter and receiver, using underlay model. For effective use of spectrum, we propose a Multiple Access Broadcasting (MABC) two-way relaying scheme for cognitive networks. The two transceivers transmit their data towards the relays and then relays retransmit the processed form of signal towards the receiver. Our aim is to design the beamforming coefficients to maximize quality of service (QoS) for the secondary network while satisfying tolerable interference constraint for the primary network. We show that this approach yields a closed-form solution. Our simulation results show that the maximum achievable SINR improved while the tolerable interference temperature becomes not strict for primary receiver.
Metal ion–binding properties of the L-aspartic acid and tartaric acid, a coparative investigation. How can be increased the dosage of mineral absorption in the body  [PDF]
Seyed Ali Akbar Sajadi
Advances in Bioscience and Biotechnology (ABB) , 2010, DOI: 10.4236/abb.2010.14047
Abstract: A comparative research has been developed for acidity and stability constants of M(TTA)1 and M(Asp)2 complexes which have been determined by potentiometric pH titration. Depending on metal ion–binding properties, vital differences in building complex were observed. The present study shows that in M(TTA) complexes, metal ions are coordinated to the carboxyl groups, but in M(Asp) some metal ions are able to build macrochelate over amine group. Hence, the following intermolecular and as a result independent concentration equilibrium between an open–isomer M(Asp)op and a closed–isomer M(Asp)cl, has to be considered cl op. The amounts are reported. The results mentioned above demonstrate that for some M(Asp) complexes the stability constants is also largely determined by the affinity of metal ions for amine group. This leads to a kind of selectivity of metal ions and transfer them via building complexes with the aspartate. The result of this effect is a higher dosage-absorption of minerals in body. Based on the sort of metal ions, the drug-therapy can be different. For heavy metal ions this building complex helps the absorption and filtration of the blood plasma, and consequently the excursion of heavy metal ions takes place. This is an important method in microdialysis. Other metal ions such as the complexes can be considered as mineral carriers. These complexes in certain conditions (PH–range) can release the minerals in body.
A comparative investigation of interaction between metal ions with L-methionene and related compounds such as alanine, leucine, valine, and glycine in aqueous solution  [PDF]
Seyed Ali Akbar Sajadi
Advances in Bioscience and Biotechnology (ABB) , 2010, DOI: 10.4236/abb.2010.1109
Abstract: The acidity and stability constants of M-L (M: M2+; L: Met, L-methionine) complexes, determined by potentiometric pH titrations, were used to make a comparative investigation. The stability constants of the 1:1 complexes formed between M2+ and L–, were determined by potentiometric pH titration in aqueous solution (I = 0.1 M, NaNO3, 25°C). The order of the stability constants was reported. It is shown that regarding to M ion – binding properties, vital differences on complex bilding were considered. It is demonstrated that in M-L complexes, M ion is coordinated to the carboxyl group, is also able to bild macrochelate over amine group. The aforementioned results demonstrate that for M (Met) complex, the stability constants are also largely determined by the affinity of Cu ion for amino group. It is indicated that this additional interaction with amino groups can influence the character of some amino acid complexes in biological systems.
Effective Solution of Riemann Problem for Fifth Order Improperly Elliptic Equation on a Rectangle  [PDF]
Seyed Mohammadali Ali. Raeisian
American Journal of Computational Mathematics (AJCM) , 2012, DOI: 10.4236/ajcm.2012.24038
Abstract: In this paper we present a numerical method for solving Riemann type problem for the fifth order improperly elliptic equation in complex plane .We reduce this problem to the boundary value problems for properly elliptic equations, and then solve those problems by the grid methods.
Aesthetic and Functional Outcomes of Open versus Closed Septorhinoplasty in Deviated Nose Deformity  [PDF]
Seyed Mousa Sadr Hosseini, Mohammad Sadeghi, Babak Saedi, Amin Safavi, Ghasem Reza Hedaiati
International Journal of Otolaryngology and Head & Neck Surgery (IJOHNS) , 2012, DOI: 10.4236/ijohns.2012.12002
Abstract: Background: Over the years, an optimal surgical method for septorhinoplasty in deviated nose as a challenging problem was the one of common interest of plastic surgeon; the purpose of this study is to compare outcomes of open and closed methods of septorhinoplasty in patients with deviated noses. Methods: Through a prospective study, we selected seventy patients with deviated nose. Based on their deviation severity, they underwent open or closed septorhinoplasty. Patients were evaluated for deviation angles of nasal bony and cartilage components, nasal projection, nasolabial angle, nasofacial angle, and nasofrontal angle; for which three standard photos were captured pre and postoperatively. Finally the outcomes were analyzed according to their surgical methods. Results: Closed septorhinoplasty could grant a mean 11 degrees correction to nasal bony component and a mean 8.6 degrees correction to cartilage component. That’s while open septorhinoplasty could bring a mean 19.5 degrees deviation correction to the bony component and a mean 12.5 degrees deviation correction to the cartilage component. Cosmetic angles were not improved significantly after the surgery, maybe because of complicated deformities our series of patients had. Conclusion: Open septorhinoplasty resulted in better cosmetic and functional outcomes than the closed method.
Review the Environmental Effects of Using Industrial Wastewater Effluent (Case Study: Iran Qom Shokouhie Industrial State)  [PDF]
Nona Jesmanitafti, Seyed Ali Jozi, Seyed Masoud Monavari
Journal of Environmental Protection (JEP) , 2014, DOI: 10.4236/jep.2014.510089
Abstract:

The overall goal of this study is investigating the environmental impacts of using wastewater effluent of industrial states in irrigation of green space. For this purpose, industrial state of Shokouhieh in Qom Province in central of Iran was selected as a case study. Firstly, the quality and quantity of inputting wastewater into refinery and outputting wastewater effluent were measured on important parameters of pH, TDS, TSS, COD, BOD and wastewater temperature in refinery laboratory of industrial state of Qom Shokouhieh during 12 months from March 2012 to March 2013. Then analysis of chemical, biological and physical indicators of irrigation wastewater (effluent) and measurement of heavy metals were done in June 2012 and January 2013 according to the standards instruction for the water and wastewater treatment. Also, heavy metals, EC, pH, and Mg2+, Ca2+, Na+, k+ of soil of industrial estate of Qom Shokouhieh were studied. Then, Rapid Impact Assessment Method (RIAM) and Entropy Method were used to analyze the data. In Rapid Impact Assessment Method, socio-cultural, physicochemical, biological and economic environments get the highest negative impacts respectively. In Entropy Method after weighting the environmental factors, public health and other disease parameters with the weight of 0.147, soil chemical properties with the weight of 0.136, soil toxicity with the weight of 0.126 were allocated the first rate up to the third rate respectively. After comparing the results of these two methods with each other, the main limitation of using wastewater effluent of industrial estate of Qom Shokouhie in irrigation of green space is entering chemical pollutants (nitrate) into groundwater, salinity and toxicity of soil of industrial state and endangerment of workers and labors public health who work in industrial state of Qom Shokouhie (specially the labors who exposure directly with the wastewater effluent and labors work in refinery).

MAC Sub-Layer Analysis with Channel Estimation in Broadband Power Line Communication  [PDF]
Mohammad Khaled Andari, Seyed Ali Asghar Beheshti
Communications and Network (CN) , 2011, DOI: 10.4236/cn.2011.33017
Abstract: Broadband power line communication (BPLC) gained a lot of interest because of low cost and high performance communication network in access area. In this paper physical (PHY) layer and medium access control (MAC) sub-layer of BPLC are considered. Furthermore, effects of bit error rate (BER) are analyzed in MAC sub-layer. Powerful turbo convolutional code (TCC) and wideband orthogonal frequency division multiplexing (OFDM) are used in PHY layer. Carrier sense multiple access (CSMA) and virtual slot multiple access (VSMA) are taken into consideration in MAC sub-layer. Multilayered perceptrons neural network with backpropagation (BP) learning channel estimator algorithm compare to classic algorithm in for channel estimating. The simulation results show that the proposed neural network estimation decreases bit error rate then in MAC sub-layer throughput increases and access delay is decreased.
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