Skeletal isomerization of octadecane on bifunctional ZSM-23 zeolite catalyst

Octadecane was isomerized over three different Pt/H-ZSM-23 samples. The distributions of methylheptadecane and dimethylheptadecane skeletal isomers obtained on the Pt/ZSM-23 samples were very similar. Positional isomer distributions are fingerprints of the zeolite framework structure. The independence of skeletal isomer distributions from Al-gradients and particle size constitutes a strong argument in favor of pore-mouth catalysis.     

The FtsHi Enzymes of Arabidopsis thaliana: Pseudo-Proteases with an Important Function

FtsH metalloproteases found in eubacteria, animals, and plants are well-known for their vital role in the maintenance and proteolysis of membrane proteins. Their location is restricted to organelles of endosymbiotic origin, the chloroplasts, and mitochondria. In the model organism Arabidopsis thaliana, there are 17 membrane-bound FtsH proteases containing an AAA⁺ (ATPase associated with various cellular activities) and a Zn²⁺ metalloprotease domain. However, in five of those, the zinc-binding motif HEXXH is either mutated (FtsHi1, 2, 4, 5) or completely missing (FtsHi3), rendering these enzymes presumably inactive in proteolysis. Still, homozygous null mutants of the pseudo-proteases FtsHi1, 2, 4, 5 are embryo-lethal. Homozygous ftshi3 or a weak point mutant in FTSHi1 are affected in overall plant growth and development. This review will focus on the findings concerning the FtsHi pseudo-proteases and their involvement in protein import, leading to consequences in embryogenesis, seed growth, chloroplast, and leaf development and oxidative stress management.     

Maternal vitamin D deficiency associated with neonatal hypocalcaemic convulsions

Maternal vitamin D insufficiency is not uncommon. Infants born to mothers who are deficient in vitamin D and or calcium, usually due to cultural modifications in their diets or clothing habits, and in addition are breastfed, are at risk of developing vitamin D deficiency and hypocalcaemia. We present a case of neonatal hypocalcaemic seizures secondary to vitamin D deficiency.     

Malware phylogeny generation using permutations of code

Malicious programs, such as viruses and worms, are frequently related to previous programs through evolutionary relationships. Discovering those relationships and constructing a phylogeny model is expected to be helpful for analyzing new malware and for establishing a principled naming scheme. Matching permutations of code may help build better models in cases where malware evolution does not keep things in the same order. We describe methods for constructing phylogeny models that uses features called n-perms to match possibly permuted codes. An experiment was performed to compare the relative effectiveness of vector similarity measures using n-perms and n-grams when comparing permuted variants of programs. The similarity measures using n-perms maintained a greater separation between the similarity scores of permuted families of specimens versus unrelated specimens. A subsequent study using a tree generated through n-perms suggests that phylogeny models based on n-perms may help forensic analysts investigate new specimens, and assist in reconciling malware naming inconsistencies     

PERFORMANCE ANALYSIS OF MINIMAL PATH FAULT TOLERANT ROUTING IN NOC

Occurrence of faults in Network on Chip (NoC) is inevitable as the feature size is continuously decreasing and processing elements are increasing in numbers.Faults can be revocable if it is transient.T...     

You click,I steal: analyzing and detecting click hijacking attacks in web pages

International Journal of Information Security - Click Hijacking (clickjacking) is emerging as a web-based threat on the Internet. The prime objective of clickjacking is stealing user clicks. An...     

Framework for calculating ecological footprint of process industries in local hectares using emergy and LCA approach

Clean Technologies and Environmental Policy - Environmental impact assessment has gained equal importance with economics in process industries. Various methodologies are extensively used for impact...     

S2DIO: an extended scalable 2D mesh network-on-chip routing reconfiguration for efficient bypass of link failures

The Journal of Supercomputing - The paradigm of computing has shifted from computation-centric to communication-centric designs. Network-on-chip has emerged as an alternative interconnect mechanism...     

Hyperparameter search based convolution neural network with Bi-LSTM model for intrusion detection system in multimedia big data environment

Multimedia Tools and Applications - In recent years, there is an exponential increase in the growth of the multimedia data, which is being generated from zettabyte to petabyte scale. At the same...