Propionibacterium acnes is a Gram-positive bacterium that is intimately associated with humans. The nature and consequences of this symbiosis are poorly understood; it might comprise both mutualistic and parasitic properties. Recent advances in distinguishing phylotypes of P. acnes have revealed that certain type I lineages are predominantly associated with acne vulgaris. Genome analyses reveal...

In this paper, the measurement of capacitance variation, of an on-chip power distribution network (PDN) due to the change of internal states of a CMOS logic circuit, is studied. A state-dependent PDNcapacitance model that explains measurement results will be also proposed. The model is composed of capacitance elements related to MOS transistors, signal and power supply wires, and substrate. Ref...

background:  scabies is an ectoparasitic infection, which occurs because of direct skin-to skin contact. the ideal treatment modality is still unclear and further research on this topic is warranted. the aim of the study was to com­pare the efficacy and safety of the topical scabicides: permethrin, crotamiton and sulfur ointment. methods: fifty four patients with diagnosed scabies were randomly...

this guide to the identification of iranian freshwater snails has been prepared with aim of helping individuals involved in field work, but who have had no specialized training in taxonomy to differentiate snail specimens which they collect to certain groups by means of simple identification key. the guide pays special attention to the principal snail groups which transmit human schistosomiasis...

conclusions schistosomiasis is one of the major tropical and communicable diseases in the eastern mediterranean region (emr). however, today it is eliminated in iran by schistosomiasis control practices. results on the basis of our results, using a national program for schistosomiasis control based on active and passive case finding, snail control programs, education of people, conducting train...

In this paper, a rigorous analysis of three stacked circular microstrip patches is performed using a dyadic Green’s functions formulation. The circular discs are embedded in a multilayered substrate containing isotropic and/or uniaxial anisotropic materials. A very efficient technique to derive the dyadic Green’s functions of the stacked configuration in the vector Hankel transform domain is pr...

Chromosome evolution, higher order and parasitic elements. With the accumulation of genomic sequence data, certain unexplained patterns of genome evolution have begun to emerge. One striking observation is the general tendency of genomes of higher organisms to evolve an ever decreasing gene density with higher order. For example, E. Coli has a gene density of about 2 Kb per gene, Drosophila 4 K...

Resonant mode conversion techniques are used nowadays to improve pulse width modulated dcdc converters. Moreover the quest for ever smaller 50 to 500 watts dc-dc switching supplies has led to the development of circuits that operates in 500 KHz -1 MHz range and above. Since the parasitic elements that normally present in a power circuit can be very significant at this frequency, most of the wor...

A new output structure for class E power amplifier (PA) is proposed in this paper. A series LC resonator circuit, tuned near the second harmonic of the operating frequency is added to the output circuit. This resonator causes low impedance at the second harmonic. The output circuit is designed to shape the switch voltage of the class E amplifier and lower the voltage stress of the transistor. T...

Critical investigations into the cellular and molecular biology of parasitic nematodes have been hindered by a lack of modern molecular genetic techniques for these organisms. One such technique is transgenesis. To our knowledge, the findings reported here demonstrate the first heritable DNA transformation and transgene expression in the intestinal parasite Strongyloides stercoralis. When micro...