2013 IEEE International Solid-State Circuits Conference Digest of Technical Papers, 2013
Demand for bandwidth in metro networks and data centers has fueled the deployment of 10Gb/s traff... more Demand for bandwidth in metro networks and data centers has fueled the deployment of 10Gb/s traffic over legacy data links, such as backplanes (KR) and multimode fiber (MMF) [1]. Under severe channel impairments, an ADC-based receiver with a DSP backend provides robust performance, especially for MMF applications, due to the complexity of the channel pulse response and the dynamic nature of the channel impairment. The reach of the backplane channels can also be extended, providing flexibility for system design. Applications such as 10G SFP+ DAC have less channel loss; consequently, a slicer-based binary receiver is a more viable low-power solution. This work describes the AFE of a dual-path receiver that uses both an ADC path and a slicer path for 10Gb/s multistandard applications in 40nm CMOS.
Cylindrical block copolymer micelles have shown considerable promise in various fields of biomedi... more Cylindrical block copolymer micelles have shown considerable promise in various fields of biomedical research. However, unlike spherical micelles and vesicles, control over their dimensions in biologically relevant solvents has posed a key challenge that potentially limits in depth studies and their optimization for applications. Here, we report the preparation of cylindrical micelles of length in the wide range of 70 nm to 1.10 μm in aqueous media with narrow length distributions (length polydispersities <1.10). In our approach, an amphiphilic linear-brush block copolymer, with high potential for functionalization, was synthesized based on poly(ferrocenyldimethylsilane)-b-poly(allyl glycidyl ether) (PFS-b-PAGE) decorated with triethylene glycol (TEG), abbreviated as PFS-b-(PEO-g-TEG). PFS-b-(PEO-g-TEG) cylindrical micelles of controlled length with low polydispersities were prepared in N,N-dimethylformamide using small seed initiators via living crystallization-driven self-assembly. Successful dispersion of these micelles into aqueous media was achieved by dialysis against deionized water. Furthermore, B-A-B amphiphilic triblock comicelles with PFS-b-poly(2-vinylpyridine) (P2VP) as hydrophobic "B" blocks and hydrophilic PFS-b-(PEO-g-TEG) "A" segments were prepared and their hierarchical self-assembly in aqueous media studied. It was found that superstructures formed are dependent on the length of the hydrophobic blocks. Quaternization of P2VP was shown to cause the disassembly of the superstructures, resulting in the first examples of water-soluble cylindrical multiblock comicelles. We also demonstrate the ability of the triblock comicelles with quaternized terminal segments to complex DNA and, thus, to potentially function as gene vectors.
Angewandte Chemie (International ed. in English), Jan 22, 2015
The creation of synthetic 2D materials represents an attractive challenge that is ultimately driv... more The creation of synthetic 2D materials represents an attractive challenge that is ultimately driven by their prospective uses in, for example, electronics, biomedicine, catalysis, sensing, and as membranes for separation and filtration. This Review illustrates some recent advances in this diverse field with a focus on covalent and non-covalent 2D polymers and frameworks, and self-assembled 2D materials derived from nanoparticles, homopolymers, and block copolymers.
In this research, Pike (Esox lusius) one of the most valuable commercial marine species has been ... more In this research, Pike (Esox lusius) one of the most valuable commercial marine species has been evaluated for genetic structure in Anzali wetland using microsatellite markers. 60 specimens of adult pikes were sampled from two spawning seasons, winter and spring in Anzali wetland. Five pairs of microsatellites, tested on the genomic deoxyribonucleic acid (DNA). All loci of microsatellite produced polymorphic bands as polymorphic loci were used to analyze the genetic variation of the pike. Analyses revealed that average of alleles per locus were 10.8 (range 9 to 13 alleles). All sampled seasons contained private alleles. The average observed and expected heterozygosity was 0.914 and 0.885, respectively. The inbreeding coefficient values of five microsatellite loci were negative. With the exception of a locus in spring, all loci significantly deviated from H-W equilibrium (P<0.01).
Chemical communications (Cambridge, England), Jan 10, 2015
The formation of high aspect ratio supramolecular polymeric nanofibers from square-planar platinu... more The formation of high aspect ratio supramolecular polymeric nanofibers from square-planar platinum(ii) complexes through PtPt and π-π stacking interactions has been achieved with a small width (<15 nm), tunable length, and relatively narrow length distributions up to ca. 400 nm under conditions of kinetic control using small seed fibers as initiators.
Hepatitis B is of the main causes of liver cell carcinoma (HCC) and Cirrhosis. It has been shown ... more Hepatitis B is of the main causes of liver cell carcinoma (HCC) and Cirrhosis. It has been shown that HBV genome nucleotide diversity affects the disease progression. Therefore, genotyping of hepatitis B virus can be crucial step in clinical and epidemiological diagnosis. This study aimed to determine the prevalence of HBV genotypes among patients from two Iranian cities, Sari and Rasht, by using a molecular technique, Multiplex allele-specific PCR. This study was done on 160 patients with hepatitis B (HBsAg positive) during year 2010-2011. Samples were collected from Rasht and Sari counties in northern Iran. After extraction of HBV DNA, their genotypes were determined by Multiplex allele-specific PCR method. The data obtained were analyzed through electrophoresis of amplified fragments on Agarose gel and compared with size marker. 93.8% of patients (150 samples) were positive only for genotypes D, while 6.2% showed a mix of different genotypes including D(2.9%), F (2.5%), B (0.4%),...
Bacillus thuringiensis is a gram positive and spore forming bacterium. The most of the natural ha... more Bacillus thuringiensis is a gram positive and spore forming bacterium. The most of the natural habitat this bacterium is soil and it is capable of producing the diversified varieties of crystalline proteins with insecticide property. The aim of this study has been isolation of strains of Bacillus thuringiensis carrying cry gene from soils of the west Mazandaran provinces. After screening the soil of 35 regions, 12 strains of Bacillus thuringiensis were isolated by the selective minimal medium contain sodium acetate and L-serine. After DNA extraction, Bacillus thuringiensis strains were confirmed using 16srDNA PCR sequencing. Also, relative molecular weight of crystalline protein of the strain containing the cry gene was evaluated through SDS-PAGE. Out of 12 isolated strains, cry gene from 1Aa class was identified only in one strain by Semi-conserve PCR. Study of rDNA sequence of the isolated strain showed a 99% homology with IBL200 strain of the Bacillus thuringiensis. Also approxim...
Bacillus thuringiensis is a gram positive and spore forming bacterium. The most of the natural ha... more Bacillus thuringiensis is a gram positive and spore forming bacterium. The most of the natural habitat this bacterium is soil and it is capable of producing the diversified varieties of crystalline proteins with insecticide property. The aim of this study has been isolation of strains of Bacillus thuringiensis carrying cry gene from soils of the west Mazandaran provinces. After screening the soil of 35 regions, 12 strains of Bacillus thuringiensis were isolated by the selective minimal medium contain sodium acetate and L-serine. After DNA extraction, Bacillus thuringiensis strains were confirmed using 16srDNA PCR sequencing. Also, relative molecular weight of crystalline protein of the strain containing the cry gene was evaluated through SDS-PAGE. Out of 12 isolated strains, cry gene from 1Aa class was identified only in one strain by Semi-conserve PCR. Study of rDNA sequence of the isolated strain showed a 99% homology with IBL200 strain of the Bacillus thuringiensis. Also approxim...
2013 IEEE International Solid-State Circuits Conference Digest of Technical Papers, 2013
Demand for bandwidth in metro networks and data centers has fueled the deployment of 10Gb/s traff... more Demand for bandwidth in metro networks and data centers has fueled the deployment of 10Gb/s traffic over legacy data links, such as backplanes (KR) and multimode fiber (MMF) [1]. Under severe channel impairments, an ADC-based receiver with a DSP backend provides robust performance, especially for MMF applications, due to the complexity of the channel pulse response and the dynamic nature of the channel impairment. The reach of the backplane channels can also be extended, providing flexibility for system design. Applications such as 10G SFP+ DAC have less channel loss; consequently, a slicer-based binary receiver is a more viable low-power solution. This work describes the AFE of a dual-path receiver that uses both an ADC path and a slicer path for 10Gb/s multistandard applications in 40nm CMOS.
Cylindrical block copolymer micelles have shown considerable promise in various fields of biomedi... more Cylindrical block copolymer micelles have shown considerable promise in various fields of biomedical research. However, unlike spherical micelles and vesicles, control over their dimensions in biologically relevant solvents has posed a key challenge that potentially limits in depth studies and their optimization for applications. Here, we report the preparation of cylindrical micelles of length in the wide range of 70 nm to 1.10 μm in aqueous media with narrow length distributions (length polydispersities &amp;amp;amp;amp;lt;1.10). In our approach, an amphiphilic linear-brush block copolymer, with high potential for functionalization, was synthesized based on poly(ferrocenyldimethylsilane)-b-poly(allyl glycidyl ether) (PFS-b-PAGE) decorated with triethylene glycol (TEG), abbreviated as PFS-b-(PEO-g-TEG). PFS-b-(PEO-g-TEG) cylindrical micelles of controlled length with low polydispersities were prepared in N,N-dimethylformamide using small seed initiators via living crystallization-driven self-assembly. Successful dispersion of these micelles into aqueous media was achieved by dialysis against deionized water. Furthermore, B-A-B amphiphilic triblock comicelles with PFS-b-poly(2-vinylpyridine) (P2VP) as hydrophobic &amp;amp;amp;amp;quot;B&amp;amp;amp;amp;quot; blocks and hydrophilic PFS-b-(PEO-g-TEG) &amp;amp;amp;amp;quot;A&amp;amp;amp;amp;quot; segments were prepared and their hierarchical self-assembly in aqueous media studied. It was found that superstructures formed are dependent on the length of the hydrophobic blocks. Quaternization of P2VP was shown to cause the disassembly of the superstructures, resulting in the first examples of water-soluble cylindrical multiblock comicelles. We also demonstrate the ability of the triblock comicelles with quaternized terminal segments to complex DNA and, thus, to potentially function as gene vectors.
Angewandte Chemie (International ed. in English), Jan 22, 2015
The creation of synthetic 2D materials represents an attractive challenge that is ultimately driv... more The creation of synthetic 2D materials represents an attractive challenge that is ultimately driven by their prospective uses in, for example, electronics, biomedicine, catalysis, sensing, and as membranes for separation and filtration. This Review illustrates some recent advances in this diverse field with a focus on covalent and non-covalent 2D polymers and frameworks, and self-assembled 2D materials derived from nanoparticles, homopolymers, and block copolymers.
In this research, Pike (Esox lusius) one of the most valuable commercial marine species has been ... more In this research, Pike (Esox lusius) one of the most valuable commercial marine species has been evaluated for genetic structure in Anzali wetland using microsatellite markers. 60 specimens of adult pikes were sampled from two spawning seasons, winter and spring in Anzali wetland. Five pairs of microsatellites, tested on the genomic deoxyribonucleic acid (DNA). All loci of microsatellite produced polymorphic bands as polymorphic loci were used to analyze the genetic variation of the pike. Analyses revealed that average of alleles per locus were 10.8 (range 9 to 13 alleles). All sampled seasons contained private alleles. The average observed and expected heterozygosity was 0.914 and 0.885, respectively. The inbreeding coefficient values of five microsatellite loci were negative. With the exception of a locus in spring, all loci significantly deviated from H-W equilibrium (P<0.01).
Chemical communications (Cambridge, England), Jan 10, 2015
The formation of high aspect ratio supramolecular polymeric nanofibers from square-planar platinu... more The formation of high aspect ratio supramolecular polymeric nanofibers from square-planar platinum(ii) complexes through PtPt and π-π stacking interactions has been achieved with a small width (<15 nm), tunable length, and relatively narrow length distributions up to ca. 400 nm under conditions of kinetic control using small seed fibers as initiators.
Hepatitis B is of the main causes of liver cell carcinoma (HCC) and Cirrhosis. It has been shown ... more Hepatitis B is of the main causes of liver cell carcinoma (HCC) and Cirrhosis. It has been shown that HBV genome nucleotide diversity affects the disease progression. Therefore, genotyping of hepatitis B virus can be crucial step in clinical and epidemiological diagnosis. This study aimed to determine the prevalence of HBV genotypes among patients from two Iranian cities, Sari and Rasht, by using a molecular technique, Multiplex allele-specific PCR. This study was done on 160 patients with hepatitis B (HBsAg positive) during year 2010-2011. Samples were collected from Rasht and Sari counties in northern Iran. After extraction of HBV DNA, their genotypes were determined by Multiplex allele-specific PCR method. The data obtained were analyzed through electrophoresis of amplified fragments on Agarose gel and compared with size marker. 93.8% of patients (150 samples) were positive only for genotypes D, while 6.2% showed a mix of different genotypes including D(2.9%), F (2.5%), B (0.4%),...
Bacillus thuringiensis is a gram positive and spore forming bacterium. The most of the natural ha... more Bacillus thuringiensis is a gram positive and spore forming bacterium. The most of the natural habitat this bacterium is soil and it is capable of producing the diversified varieties of crystalline proteins with insecticide property. The aim of this study has been isolation of strains of Bacillus thuringiensis carrying cry gene from soils of the west Mazandaran provinces. After screening the soil of 35 regions, 12 strains of Bacillus thuringiensis were isolated by the selective minimal medium contain sodium acetate and L-serine. After DNA extraction, Bacillus thuringiensis strains were confirmed using 16srDNA PCR sequencing. Also, relative molecular weight of crystalline protein of the strain containing the cry gene was evaluated through SDS-PAGE. Out of 12 isolated strains, cry gene from 1Aa class was identified only in one strain by Semi-conserve PCR. Study of rDNA sequence of the isolated strain showed a 99% homology with IBL200 strain of the Bacillus thuringiensis. Also approxim...
Bacillus thuringiensis is a gram positive and spore forming bacterium. The most of the natural ha... more Bacillus thuringiensis is a gram positive and spore forming bacterium. The most of the natural habitat this bacterium is soil and it is capable of producing the diversified varieties of crystalline proteins with insecticide property. The aim of this study has been isolation of strains of Bacillus thuringiensis carrying cry gene from soils of the west Mazandaran provinces. After screening the soil of 35 regions, 12 strains of Bacillus thuringiensis were isolated by the selective minimal medium contain sodium acetate and L-serine. After DNA extraction, Bacillus thuringiensis strains were confirmed using 16srDNA PCR sequencing. Also, relative molecular weight of crystalline protein of the strain containing the cry gene was evaluated through SDS-PAGE. Out of 12 isolated strains, cry gene from 1Aa class was identified only in one strain by Semi-conserve PCR. Study of rDNA sequence of the isolated strain showed a 99% homology with IBL200 strain of the Bacillus thuringiensis. Also approxim...
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