BACKGROUND The expression of human virus surface proteins, as well as other mammalian glycoproteins, is much more efficient in cells of higher eukaryotes rather than yeasts. The limitations to high-level expression of active viral surface glycoproteins in yeast are not well understood. To identify possible bottlenecks we performed a detailed study on overexpression of recombinant mumps hemagglu...

In this work we studied the optical properties of poly[2-methoxy-5-(2’-ethylhexyloxy)-p-phenylene vinylene] (MEH-PPV) using polymeric blends with polystyrene (PS). The photoluminescence (PL) spectrum of MEHPPV present three characteristic peaks correlating to aggregate electronic transition at 608, 674 and 742 nm at 10K. An addition of PS in MEH-PPV films induces a red shift in the absorption s...

The effects of the influence magnetic field on luminescence intensity methoxypolyphenylene vinylene (MEH-PPV) films at various air pressures above samples are investigated. An inversion sign effect was detected with a smooth change in oxygen concentration system. Based balance equations, theoretical model processes is proposed that takes into account formation populations triplet (T) excitons M...

Katup memiliki peran penting dalam proses pembakaran bahan bakar di silinder. Fungsi utama katup adalah mengatur aliran dan gas sisa pembakaran, serta mengendalikan tekanan ruang bakar. Dalam perancangan desain katup, pengujian dilakukan dengan menggunakan metode elemen hingga variasi yang telah ditentukan meliputi 150 Psi 180 Psi. Hasil dianalisis deformasi, displacement, stress, strain. Bahan...

The expression of hepatic microsomal epoxide hydrolase (mEH) and glutathione S-transferases (GSTs) by 2-(allylthio)pyrazine (2-AP), an experimental chemopreventive agent, was investigated in rats. Northern blot analysis revealed that 2-AP caused increases in mEH, rGSTA2/3/5, and rGSTM1/2 mRNA levels. mEH and rGSTA2 proteins were also induced. Molecular basis of the enzyme induction by 2-AP was ...

We present evidence that the degree of interchain interactions and morphology in conjugated polymer films can be controlled by altering the chain conformation in the solution from which the film is cast. Light scattering experiments show that the physical size of poly@2-methoxy-5~28-ethyl-hexyloxy!-1,4-phenylene vinylene] ~MEH-PPV! chains can vary by a factor of 2 in different solvents such as ...

BACKGROUND Oral lesions caused by human papillomavirus (HPV), share morphological features which may complicate their diagnosis. AIM To analyze the usefulness of Toki's morphological criteria for the diagnosis of HPV lesions in cervix, in the diagnosis of oral lesions. MATERIALS AND METHODS Retrospective study of 355 oral lesions by HPV. The pathologic evaluation was carried out three times...

Smoking and the consumption of alcohol are the main risk factors for head and neck cancer. However, interindividual variation in the activity of enzymes involved in the detoxification of tobacco smoke (pro)carcinogens, such as microsomal epoxide hydrolase (mEH), glutathione-S-transferases (GSTs) and uridine 5'-diphosphate (UDP)-glucuronosyltransferase (UGTs), may influence the process of carcin...

Excellent control in the synthesis of MEH-PPV can be achieved by microwave assisted, ring-opening metathesis polymerisation (ROMP) of [2.2]paracyclophanedienes.