BACKGROUND Signal peptide peptidases play an important role in the removal of remnant signal peptides in the cell membrane, a critical step for extracellular protein production. Although these proteins are likely a central component for extracellular protein production, there has been a lack of research on whether protein secretion could be enhanced via overexpression of signal peptide peptidas...

A simple one-step technology of wire electrospinning is presented for the manufacturing air-permeable CO2-capturing membranes, easily transferable to industrial production lines. The design chemically-modified polyurethane nanofiber membranes CO2 capture was based on a combination molecular modeling and technological experiments using (i.e., modifying agent dissolved directly in spinning soluti...

This study explored the possibility of recovering waste powder from photonic industry into two useful resources, sodium fluoride (NaF) and the silica precursor solution. An alkali fusion process was utilized to effectively separate silicate supernatant and the sediment. The obtained sediment contains purified NaF (>90%), which provides further reuse possibility since NaF is widely applied in ch...

Abstract A cellulosic material has been synthesized that could efficiently and selectively adsorb organic inorganic contaminants from aqueous solutions without interference competing adsorption sites. Cellulose-graft-tetraethylenepentamine molecular imprinted polymer (C-TEPA-MIP) was by using 4-nitrophenol (4-NP) as the template. The C-TEPA-MIP adsorbent 4-NP Cr(VI) simultaneously selectively, ...

MATERIAL The sputa of five patients who had been confined at Howard Marcy Hospital for more than five years were collected. The diagnosis in all five patients was: far advanced pulmonary tuberculosis, active with sputum positive on smear and culture. In all patients, more than thm &ancc studies showed b a a resistant to isoniazid, PAS, smptomycin, ethionamide, pyrazinamide and cydoscrine. Clini...

Three kinds of inorganic alkali are introduced into tetraethylenepentamine (TEPA)and polyethyleneimine (PEI)-modified MCM-41 as the CO2 adsorbents. FT-IR and TGA are used to characterize the surface groups and the thermal stability of adsorbents. Chemical titration method is used to measure the alkali amounts of adsorbents. Thermo-gravimetric analysis with 10% CO2/90% N2 as the simulated flue g...

Rising CO2 emissions are responsible for increasing global temperatures causing climate change. Significant efforts underway to develop amine-based sorbents directly capture from air (called direct (DAC)) combat the effects of However, sorbents’ performances have usually been evaluated at ambient (25 °C) or higher, most often under dry conditions. A significant portion natural environment where...

Floral evolution requires reassessment in basal monocots, including species formerly assigned to Melanthiaceae, in the light of recent developments in the molecular phylogenetics of monocots. We have investigated flowers of Tofieldia (Tofieldiaceae), Japonolirion (Petrosaviaceae), and Narthecium (Nartheciaceae). We confirm Engler's (1888) hypothesis that orientation of lateral flowers in monoco...

Odorant receptors (ORs) in olfactory sensory neurons (OSNs) mediate detection of volatile odorants. Divalent sulfur compounds, such as thiols and thioethers, are extremely potent odorants. We identify a mouse OR, MOR244-3, robustly responding to (methylthio)methanethiol (MeSCH(2)SH; MTMT) in heterologous cells. Found specifically in male mouse urine, strong-smelling MTMT [human threshold 100 pa...

The antitumor activities of seventeen antitumor alkylating agents have been studied in the xenograft of human mammary carcinoma transplanted in nude mice (MX-I). The drugs employed in this study were; cyclophosphamide. ifosfamide. 1-(2-chloroethyl)-3-cyclohexyl-l-nitrosourea (CCN U). 1-(2-ehloroethyl)3-(4-methylcyclohexyl)-I-nitrosourea (me-CCN U). 2-[3-(2-ehloroethyl)-3-nitrosoureido]-2-deoxyD...