Developing a Web-based tourism demand forecasting system

2008-2009 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Formation of artificial granules for proving gelation as the main mechanism of aerobic granulation in biological wastewater treatment

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Erythroid differentiation and denucleation factors from fetal rat liver: monoclonal antibodies preparation for clone screening from human bone marrow cDNA library

Abstract no. 3100published_or_final_versio

A Latent Class Growth Analysis Of School Bullying And Its Social Context: The Self-determination Theory Perspective

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Large-signal dynamic behavior of distributed-feedback lasers including lateral effects

The large-signal behavior of DFB lasers is analyzed, including lateral as well as longitudinal variations in carrier density, photon density, and refractive index. The effective index method and other approximations are used to reduce the complex three-dimensional problem to one dimension. The coupled wave and carrier rate equations are then solved in a self-consistent manner. Lateral spatial carrier hole burning and lateral diffusion are found to affect the relaxation oscillation frequency and damping rate of DFB lasers, depending on their detailed structure. The effective time-averaged linewidth enhancement factor is also affected. In symmetric AR-coated λ/4 phase-shifted lasers the side mode suppression ratio can be deteriorated significantly by lateral spatial hole burning when kL is large.published_or_final_versio

Direct multiple shoot induction and plant regeneration from dormant buds of Codonopsis pilosula (Franch.) Nannf.

An efficient and reproducible protocol for in vitro plant multiplication system via direct organogenesis from dormant buds of Codonopsis pilosula Nannf was developed. Multiple shoots were induced at a frequency of 75% after nine weeks on Murashige and Skoog (MS) medium supplemented with BAP (1.0 mg/l), NAA (0.5 mg/l), 3% sucrose and 0.7% agar. Approximately, 15 to 18 shoots were formed at the base of each dormant bud. Higher concentrations of BAP and NAA resulted in callus formation. Further development of shoot elongation and multiplication were also studied. Well-grown shoots of 2.8 cm height and 3.8 proliferation coefficient were achieved by sub-culturing on MS medium supplemented with 0.2 mg/l BAP and 0.05 mg/l IBA. At higher concentrations, BAP (0.5 mg/l) promoted higher shoot proliferation coefficient (4.2); however, it negatively affected shoot elongation. Further, low NAA concentration was beneficial to shoot proliferation. All in vitro-derived shoots measuring 2.5 to 3 cm in length, rooted when grown on ½MS (half of all MS elements) basal medium containing 1.5 mg/l IBA within 3 weeks, 100% of shoots developed roots and test-tube seedlings grew stout.Key words: Codonopsis pilosula, dormant bud, direct organogenesis, multiple shoot, shoot elongation, rooting

Do thermal effects cause the propulsion of bulk graphene material?

In a recent article, Zhang et al.1 observed the direct propulsion of a bulk graphene sponge when exposed to laser light. They attributed this to the momentum of the light-induced ejected electrons. However, the force provided by the ejected electrons is about 2.7 × 10−11 N (supposing that the average current and the kinetic energy of the ejected electrons are 9 × 10−7 A and 70 eV, respectively), which is far smaller than the gravitational force of a 0.86 mg graphene sponge. From our knowledge of rarefied gas dynamics, the horizontal, vertical and rotational motion of the laser-illuminated graphene sponge could be due to the radiometric force

Ultraviolet Lasing Characteristics of ZnS Microbelt Lasers

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