conclusions this report presents a new method for lung isolation in specific cases and in the absence of certain equipment. case presentation a 41-year-old woman with a history of pharyngo-laryngo-oesophagectomy (plo) and tracheostomy was a candidate for thoracic duct ligation because of chylothorax. since the patient had tracheostmy stomal stenosis, two cuffed tracheal tubes (internal diameter...

residual lignin of wood after mwl isolation was dissolved with 1-butyl-3-methylimidazolium chloride ionic liquid. chemical structure of isolated mwl from poplar wood (popolus deltiodes) and dissolved residual lignin were characterized with gas chromatography and 1d, 2d nmr techniques. analytical results showed that  popolus deltoides wood has more 4-(3-hydroxy-1-propenyl)-2-methoxy phenol units...

ornithobacterium rhinotracheale (ort) has been identified as one of the respiratory bacterial pathogens in turkey and chicken flocks. four live birds displaying severe torticollis were submitted from a 13-week-old commercial broiler breeder chicken flock located in mazandaran province. these birds were suspected to pasteurellosis by the farm veterinarian. no other marked gross lesion except em...

scorpion venoms contain of variety of peptides toxic to mammals ، insects and crustaceans. toxic peptides are the main factors in scorpion venom causing toxicity, (their amount being 1-3%of total venom.). most of the scorpion toxins have been isolated from the venoms of scorpions in the family buthidae. the scorpion buthotus schach belonging to the buthidae family is widely found in the western...

background: in cancer patients, chemo and radiotherapy can cause infertility by damaging spermatogenesis process. this process is based on self-renewal and differentiation of a rare population of the testicular cells called spermatogonial stem cells (sscs). scientists have tried to isolate, enrich and culture human spermatogonial stem cells, hoping to resolve infertility problems in cancer reco...

background and objectives: acetic acid bacteria (aab) are useful in industrial production of vinegar. the present study aims at isolation and identification of acetic acid bacteria with characterization, optimization, and evaluation of their acetic acid productivity. materials and methods: samples from various fruits were screened for presence of acetic acid bacteria on glucose, yeast extract, ...

background: cryptosporidium parvum causes severe gastroenteritis in immunocompromised human and new borne animals. the organism can be transmitted through water. since small number of c. parvum is infectious, the aim of the present study was to develop a chromatography method for the isolation of c. parvum oocyst in samples with limited number of oocysts. methods: antibody was prepared against ...

background brucellosis is a zoonotic disease that is endemic in iran. appropriate and rapid diagnosis has a vital role in public health improvement. low isolation rate of the organism has reported frequently in various reports. the present study was conducted to determine the isolation rate of organism in culture from collected specimens of hospitalized patients who were not under antibiotic th...

Sexual communication can evolve in response to sexual selection, and it can also cause behavioral reproductive isolation between populations and thus drive speciation. Anurans are an excellent system to investigate these links between behavior and evolution because we have detailed knowledge of how neural mechanisms generate behavioral preferences for calls and how these preferences then genera...

Research on sexual selection and hybridization has focused on female mate choice and male-male competition. While the evolutionary outcomes of interspecific female preference have been well explored, we are now gaining a better understanding of the processes by which male-male competition between species in secondary contact promotes reproductive isolation versus hybridization. What is relative...