The morphology and function of the splenic sheath have been thoroughly discussed. Schweigger-Seidel (1863) first pointed out that a high permeability was seen on the wall of the sheathed vessel. Later some research workers who used color suspension materials for investigating the sheathed vessel have mentioned that the material leaked from the wall of the vessel into the sheath. Ohta (1957) des...

conclusions zataria essence, at concentrations of 50 and 25 mg/ml, effectively removed candida cells that had adhered to the denture surface, similar to the level of removal observed for 100000 iu nystatin. objectives the purpose of the present study was to evaluate the antifungal effect zataria multiflora essence in removing of candida albicans biofilms on experimentally contaminated resin acr...

Raman spectra of native and solubilized feather keratin have been obtained, and the amide I and amide 111 regions have been analyzed by band resolution techniques. The amide I region of the native form indicates that at least 64% of the protein has an antiparallel chain pleated sheet structure, the remainder being unordered. For the solubilized keratin all of the protein is in an unordered stat...

Amide-iminol tautomerism was studied for ionized oxamic acid (OA+•) in the gas phase using theDFT method with the UB3LYP functional and various basis sets {6-31++G(d,p), 6-311+G(d,p), and augcc-pVDZ}. Among twenty tautomers-rotamers possible for OA+•, eleven isomers were found to bethermodynamically stable. Similarly as for the neutral molecule, ionization (OA → OA+• + e) favors theamidization ...

BACKGROUND Fourier Transform Infrared Imaging (FTIRI) is used to investigate the amide anisotropies at different surfaces of a three-dimensional cartilage or tendon block. With the change in the polarization state of the incident infrared light, the resulting anisotropic behavior of the tissue structure is described here. METHODS Thin sections (6 mum thick) were obtained from three different ...

The biosynthesis of aminocoumarin antibiotics involves the action of amide synthetases which construct amide bonds between aminocoumarins and various acyl moieties. Libraries of aminocoumarin analogues have been generated by in vivo fermentation, via feeding known amide synthetase substrates into producing microbial strains. Critically, such feeding studies rely on the inherent or engineered su...

Redox regulation of protein tyrosine phosphatase 1B (PTP1B) involves oxidative conversion of the active site cysteine thiolate into an electrophilic sulfenyl amide residue. Reduction of the sulfenyl amide by biological thiols regenerates the native cysteine residue. Here we explored fundamental chemical reactions that may enable covalent capture of the sulfenyl amide residue in oxidized PTP1B. ...

Surface active amide-functionalized ionic liquids (ILs) consisting of a long alkyl chain (C6C14) connected to a polar head group (methylimidazolium or pyridinium cation) via an amide functional group were synthesized and their thermal stability, micellar properties and antimicrobial activity in aqueous solution investigated. The incorporation of an amide group increased the thermal stability of...

this study was carried out to determine the protein and carbohydrate molecular structure of sorghum cultivars using fourier transform infrared spectroscopy (ftir) with multivariate molecular spectroscopy analyses. sorghum cultivars included: 1- kimia, 2- sepideh, 3- m2 and 4- m8. protein and carbohydrate molecular functional groups studied included: peak area and height amide i, amide ii, α-hel...