Gas pulsation in the discharge side of rotary compressor is one of the main sources of noise, so the discharge muffler is widely used to decrease the gas pulsation and noise level. Investigations on pressure pulsation in the muffler can provide not only a method to evaluate the muffler design and modification, but also a base for advanced study of noise in rotary compressor. In this paper the m...

In the present study tissue samples were collected from external nares, nasal cavity, nasopharynx and larynx of six healthy adult Black Bengal goat. The samples were routinely prepared for histological observation. The external nares, and nasopharynx were lined by stratified squamous epithelium, and nasal cavity was ciliated pseudostratified columnar epithelium. Numerous hair follicles were ide...

A case of hyalinizing clear cell carcinoma (HCCC) of the minor salivary glands of the oral cavity is reported. A 52- year-old woman presented with a growing mass at the base of the tongue. The patient underwent complete resection of the tumour. The histological picture was characterized by trabeculae or solid nests of proliferating cells with a clear cytoplasm, surrounded by a hyalinizing strom...

there are significant structural differences between the mouth and pharyngeal cavity of birds and mammals. it is usual to refer to a common oropharyngeal cavity of birds because the soft palate, which forms such an obvious delineation between the mouth and pharyngeal cavity, is absent. six male adult ostriches were used to study the oropharyngeal cavity and its components including the beak, ha...

background: mullerian disorders are present in 5-25% of infertile women. myoma, polyp and endometrial adhesions are among other involved factors in infertility. objective: the aim of this study was to determine the frequency distribution of pregnancy occurrence in infertile women after the diagnostic-surgical hysteroscopy on selected infertile cases including those with abnormal uterine. materi...

BACKGROUND Ureaplasma urealyticum is the most common pathogen cultured from the amniotic cavity of women with preterm labor and intact membranes. However, experience with antibiotic eradication of the pathogen in this setting is limited. CASE We report a case of U. urealyticum isolation from the amniotic cavity of a woman with preterm labor at 27 weeks gestation. The patient was treated with ...

Pontonema golfonuevensis sp. nov. from Chubut Province, Argentina is described and a description of the male of Pontonema incisum Wieser, 1953 from Chubut and Santa Cruz Provinces is provided. Pontonema golfonuevensis sp. nov. is characterized by having the slender sub-ventral teeth 25 µm long located at 24 % of stoma length, a short, broad dorsal tooth at 60 % of stoma length, excretory pore o...

The mechanism of proton exchange in a metal-ligand enzyme active site mimic (compound 1) is described through amide hydrogen-deuterium exchange kinetics. The type and ratio of cationic guest to host in solution affect the rate of isotope exchange, suggesting that the rate of exchange is driven by a host whose cavity is occupied by water. Rate constants for acid-, base-, and water-mediated proto...

OBJECTIVE The aim of the study is to explore the clinical efficacy of apex radicis dentis excision guided by a template made by Computer Aided Design/Computer Aided Manufacture (CAD/CAM). METHODS Base on the CBCT image of oral cavity, a three-dimensional model of patient's oral cavity was built. Then the access way and excisional area were defined based on the model. Finally, the operative gu...

Currently, the most widely used denture-base material, poly(methyl methacrylate), a polymer, does not efficiently bind natural antimicrobial cationic proteins secreted in saliva as part of the pellicle surface (a thin layer of salivary glycoproteins and immunoglobulins, including mucins, amylase, and secretory IgA, deposited on teeth and other oral cavity surfaces). These antimicrobial peptides...