One of the common concrete channels in irrigation networks is the semielliptical prefabricated channels. Manning formula is usually used to design these channels. The cross-sectional area and the wetted perimeter are required to be calculated in Manning formula. There are no analytical solutions to directly compute these parameters. Thus, numerical integration methods are inevitably used. In th...

This paper presents strategies for transmitting MPEG4 video by using rate matching techniques over the WCDMA air interface. We use an OPNET simulation model to analyze the channel utilization and transmission delay performance when transmitting MPEG4 traffic over dedicated channels in the WCDMA UP link.

A numerical optimization tool is used to optimize forced convection micro-channel heat sinks for minimum pump power at high heat fluxes. Results gained with the optimization tool are generalized and optimum configurations are illustrated on design charts. Physical trends are illustrated analytically using the underlying relations. Investigations are done for air and water in single-phase flow w...

Medical Officer In-charge, Rai Bahadur Amar Natli Tuberculosis Institute, Mayo Hospital, Lahore Air embolism is a very rare but a very serious complication of artificial pneumothorax treatment. It occurs most frequently during the induction of pneumothorax, but on certain rare occasions has been met with during a re-fill. Cases have also been recorded in which the entry of a needle into the lun...

Leaking in water pipe is a critical issue in Middle Eastern countries such as Kuwait where water is scarce. In-pipe robots can be dispatched to discover the network and inspect the inner surface of the pipe. This thesis describes the design and characterization of suction pads for in-pipe robots. The suction cups are made of hyperelastic materials that contain air channels inside. Instead of us...

Recent works on plasma channels produced during the propagation of ultrashort and intense laser pulses in air demonstrated the guiding of electric discharges along the laser path. However, the short plasma lifetime limits the length of the laser-guided discharge. In this paper, the conductivity and lifetime of long plasma channels produced by ultrashort laser pulses is enhanced efficiently over...

The oxidation of highly oriented pyrolytic graphite (HOPG) in air at elevated temperatures was studied by examination of the oxidized HOPG by scanning tunneling microscopy (STM). Etch pits of uniform size and monolayer depth were readily formed on preexisting defects or generated vacancies in the HOPG basal plane by heating freshly cleaved HOPG samples in air at 650 OC. The density of the pits ...

The likelihood of line-of-sight (LoS) is an essential component in any radio channel model. It is particularly useful for radio network planning and urban coverage prediction. Empirical LoS models are hard to derive due to a strong dependency on local topology and the need for large measurement datasets. Since buildings are the major obstructions in a dense urban environment, we propose a new t...

Poor air quality is a pressing global challenge contributing to adverse health impacts around the world. In past decade, there has been rapid proliferation of information delivered via sensors, apps, websites or other media channels in near real-time and at increasingly localized geographic scales. This paper explores growing emphasis on self-monitoring digital platforms supply informational in...

Drying is one of the processes that present higher costs in food processing. Pre-treatments are often used to reduce drying time and consequently its cost. In the past years, our group has studied the use of ultrasonic pre-treatments to induce structural changes in the fruit tissue as to improve the effective water diffusivity during air-drying and consequently reduce air-drying time. This stud...