A strain-isolation design for stretchable electronics

Stretchable electronics represents a direction of recent development in next-generation semiconductor devices.Such systems have the potential to offer the performance of conventional wafer-based technologies,but they can be stretched like a rubber band,twisted like a rope, bent over a pencil,and folded like a piece of paper.Isolating the active devices from strains associated with such deformations is an important aspect of design.One strategy involves the shielding of the electronics from deformation of the substrate through insertion of a compliant adhesive layer. This paper establishes a simple,analytical model and validates the results by the finite element method.The results show that a relatively thick,compliant adhesive is effective to reduce the strain in the electronics,as is a relatively short film.

Isolation and Physiological Characterization of Synechococcus cedrorum 1191 Strain Tolerant to Heavy Metals and Pesticides

The toxicity of heavy metals (Hg2 + , Zn2 + ) and pesticides has been investigated by comparing the physiological properties in wild and tolerant strains of Synechococcus cedrorum 1191. The differential pattern of growth, absorption spectra of pigments and nutrient uptake was observed in tolerant strain.

Isolation and Identification of Botrytis cinerea in Processing Tomato(Solanum lycopersicum)

[Objective]The paper was to isolate and identify Botrytis cinerea from processing tomato.[Method]The strain nky007a was isolated and purified from fruits infected by tomato grey mold.After identification,it was determined as B.cinerea.The 18S rDNA and internal transcriptional spacer(ITS)sequences of strain nky007a were amplified for molecular identification and classification.[Result]The 18S rDNA sequence of the strain shared the homology of 99.95%with Botryotinia fuckeliana(EF 110887.1);the ITS rDNA sequence had the homology of 100%with Botryotinia fuckeliana(AB444949.1),and there was no difference in bases.Phylogenetic tree analysis of strain nky007a indicated that nky007a belonged to Botrytis.When healthy tomatoes were infected by the strain,the incidence rate of tomato grey mold was up to 95%,indicating the pathogenicity of the strain.[Conclusion]Morphological identification,molecular identification and pathogenicity analysis results show that the strain nky007a is a highly pathogenetic strain B.cinerea.

Genetic Variation Analyses of nsp2 Gene of PRRSV in Ningxia Hui Autonomous Region of China

To gain a better understanding of the genetic diversity and evolution of PRRSV in the Ningxia Hui Nationality Autonomous Region(Ningxia) of China,the nsp2 genes from a series of PRRSV strains collected from the region in 2007 were partially sequenced. These sequences were then analyzed along with the classical strain(ch-1a) and two other epidemic strains SD(3) and SD2006. Comparison of the nucleotide sequence with ch-1a indicated that nsp2 genes of seventeen Ningxia isolates(NX strain) have deletions of 87 nucleotides. Sequence analysis indicated that homology between the Ningxia strain and ch-1a was 60.3%-79.9% in the nucleotide sequence,and homology between the NX strains and SD strains was 80.3%-98.8% in the nucleotide sequence. The nsp2 genes of the seventeen isolates had 74.9%-100% nucleotide sequence identities with each other. This study was undertaken to assess the regional variation of prevalent PRRSV and to establish a sequence database for PRRSV molecular epidemiological studies.