body's iterative force-field computer program has been used to calculate strain energies in cyclooctanone (i). 348 mhz 1h nmr spectra of (i) have been investigated over the temperature range of 25° to -160°c. two conformation processes affect the 1h nmr spectrum of (i). iterative force-field calculations on the conformations and conformational interconversion paths of (i) give results consisten...

dna barcoding is a new term introduced in to scientific literatures by hebert and coworkers almost a decade ago. the concept of barcoding alone is well-known to the public: a series of black bars printed on many commercial products (universal product code), which are used to distinguish different products. advances made in molecular biology and molecular techniques late 20th century e.g. sequen...

background: treatment of cutaneous leishmaniasis (cl) is being faced with serious difficulties in fars province, due to emerging of resistance against meglumine antimonite (glucantime®). in this context, determining some biomarkers for drug sensitivity monitoring seems to be highly essential. different studies have been carried out to decipher the genes might be involved in antimony resistant p...

breast cancer within incident of one million new cases each year has become one of the most common malignancies and leading cause of death among females. this disease is comprised of about 18% of women cancers. the availability of early detection and improved treatments may decrease the mortality rates which reflected in the united states and many other western countries. breast cancer in over ...

conclusions accordingly, it can be concluded that locally low temperatures and acidic conditions are the main suspected reasons for protein misfolding. results based on the study findings the low temperature, 0°c, and acidic condition change the structure more strongly than other mentioned conditions. the low temperature and acidic conditions seem to have the most misfolding effect on insulin s...

background permanent antigenic variation of influenza viruses causes a major concern to develop an effective human influenza vaccine. conserved antigens are new vaccine candidates because it is not necessary to match the prepared vaccine with circulating strains. ion channel m2 protein is conserved among all influenza a viruses, allowing the virus to enter host cells. objectives to prepare an e...

carbon molecular sieve membranes (cmsms) have been considered as very promising candidates for gas separation, in terms of separation properties as well as thermal and chemical stability. due to the numerous advantages and wide applications of carbon membranes, their application for gas separation is of special importance. because of the importance of carbon membranes and a large number of stud...

context: detection of causative pathogen is crucial for treatment strategies in most infections. molecular diagnosis as a more sensitive and specific method, has become the best option to investigate certain pathogens, mainly viruses. recent scientific and technological approaches resulted in changing the area of diagnostic microbiology. evidence acquisition: a comprehensive online search of da...

avian reoviruses (arvs) are considered as an important cause of several diseases in poultry, particularlyarthritis and tenosynovitis. tenosynovitis and arthritis, which are among the causes of chronic lameness inbreeder flocks, can result in reduced egg production and culling of breeder hens. in this study, the molecularcharacteristics of arvs in some broiler breeder flocks were investigated in...

background : cockroaches are of vital importance medically and hygienically. they are able to contaminate foods and act as vectors of pathogenic agents such as bacteria, protozoa, and parasites to human environment either mechanically or through their digestive system. cockroaches belong to the phylum arthropoda, class insecta, and order blattodea or blattaria. to date, over 4,500 cockroach spe...