This Study Guide is intended as an orientation to the four parts of the film WATER AND THE DREAM OF THE ENGINEERS. It presents the perspective of the film and offers general background material for teachers unfamiliar with .the subject. For further reading, a brief bibliography is provzded. At the end of the notes for each section is a set of study questions teachers might use with their studen...

The gas barrier film formation technique using simultaneous photo-irradiation and heat-treatment has been researched on alicyclic polyimide film coated with a polysilazane solution. A fine SiO2 thin film on polyimide film was formed at low temperatures, which greatly improved the substrate’s gas barrier characteristics by this technique. The values of gas barrier characteristics depended on the...

A new and easy-to-make polymer film sensor was prepared by dip-coating technique and this film used as fluorescent chemosensor for the detection of metal ions in aqueous solution. The proposed film sensor exhibited dual emissions at 540 and 582 nm under a single excitation wavelength. The fluorescence behavior of this film sensor toward metal ions has been investigated using these two wavelengt...

We demonstrate that silver nanoisland film self-assembled on the surface of silver-containing glass in the course of thermal processing in hydrogen is capable to detect 10-7 M concentration of rhodamine 6G in water using surface enhanced Raman spectroscopy (SERS) technique. The film can be multiply restored on the same glass substrate via annealing of the glass in hydrogen. We showed that the f...

Graphitized multiwalled CNTs (carbon nanotubes) were purchased from ECHO Chemical Co. Ltd. (Taiwan) with an external diameter of 2040 nm and a length of 0.5200 m. The raw CNT powder was etched in 15 M boiling nitric acid solution for 1h. The CNTs were then washed several times with de-ionized water until the pH value of the solution became neutral. Nickel hydroxide nanonets were grown on the...

Brittleness and other properties such as low thermal stability, medium gas barrier properties and low solvent resistance (e.g., against water) of the pure biopolymer film are often insufficient for food packaging applications. The nanoscale distribution of nanoclays (such as montmorillonite, saponite or hectorite), with a high aspect ratio (100-1,500) and extremely high surface-to-volume ratio ...

BACKGROUND Image quality assessment method of photoacoustic tomography has not been completely standardized yet. Due to the combined nature of photonic signal generation and ultrasonic signal transmission in biological tissue, neither optical nor ultrasonic traditional methods can be used without modification. An optical resolution measurement technique was investigated for its feasibility for ...

In recent years, increasing interest has been centered on the biochemistry and physiology of the skin surface, in particular, its potential for resisting physical, chemical, and microbiologic challenges. Morphologically, the skin surface is composed of the stratum corneum, sweat and sebaceous gland ducts, and hair follicles that open onto the surface through pores. The stratum corneum consists ...

Mulching and tillage are widely considered to be major practices for improving soil and water conservation where water is scarce. This paper studied the effects of FM (flat mulching), RFM (ridge-furrow mulching), SM (straw mulching), MTMC (mulching with two materials combined), MOM (mulching with other materials), NT (no-tillage) ST (subsoiling tillage) and RT (rotational tillage) on wheat yiel...