Collaboration software is usually thought of as providing audio-video con-ferencing services, application/desktop sharing, and access to large con-tent repositories. However mobile device usage is usually characterized by users carrying out short and intermittent tasks, sometimes referred to as Ômicro-taskingÕ. Ad-hoc collaboration with mobile devices - Ômicro-collaborationsÕ - are not well supported by traditional collaborative sys-tems and the work in this thesis...
Introduction Specialized meiotic cell division is a key process in sexual reproduction. Accurate chromosome pairing, synapsis and recombination during meiotic prophase ensure proper chromosome segregation later on, which is vital in cell division in order to avoid aneuploidy (reviewed in Gerton and Hawley 2005). The key feature of meiosis is two successive chromosome segregations: one homolog segregation (maternal and paternal chromosomes), and another sister chromatid segregation, as in...
Clinical immunologists use a particular technique to detect certain antigens bound to antibodies in serum. It is called the ELISA (enzyme-linked immunosorbent assays) technique. The ELISA technique has many different stages that differ depending on the system used. There are three identified systems of ELISA technique, each form the foundation of competitive and inhibition ELISAs; direct, indirect and sandwich ELISA technique. For this experiment we will be using an indirect ELISA technique...
Microbiological analysis is an important technique to assure the quality and safety of the food products for consumption. Conventional microbiological methods are commonly used for the identification and enumeration of harmful microorganisms in food products. However, these methods are time consuming and tedious (Vasavada, 1993). Furthermore, these methods cannot be used during the processing system of food products (Bell et al., 1994, Damez and Clerjon, 2008).In modern food processing...
Solar cells are power converters which transform energy carried by sun-light into electrical energy. This conversion is based on energy transfer from photons to electrons.To achieve power production, electrons must remain in an excited state long enoughto reach the outer circuit. In other words, the desexcitation rate (either radiative ornon-radiative) must be much lower than the excitation rate under illumination. Inaddition, an energetic asymmetry is required to drive these excited electrons...
5.3 Calcium signaling induced by cold or chilling stresses. In transgene Arabidopsis, in which aequorin was targeted to different types of root cells, as well as to the whole plant, cold-water addition caused a transient rise in [Ca2+cyt] (Kiegle et al. 2000). The maximum peak occurred at approx. 15-20 s in all cell types. However, the increase in [Ca2+cyt] was lower in the root cells, compared with shoot cells. The largest elevation was obtained in the deepest cell type, the pericycle, and...
Huntington's Disease (HD), in the past, was thought to be possession by the devil, as the sufferers' body would jerk or twitch without control. Some sufferers even were alleged as witches and killed (Australian Huntington's Disease Association, 2004). In fact, HD is an inherited disorder. Because of the deterioration of nerve cells, the sufferers will lose control of their body when the disease onsets (Losos, et al 2008:247). HD is different from other inherited diseases, and will not appear...
Modern medicine has been impacted by advances in science and technology. These advances have extended the doctors professional capabilities. Technology advances have also made modern medicalscience intellectually challenging. Medicine has now become more complex and demanding. Some examples include cloning, stem cells and identification of new viruses such as HIV. However this is only one side. There are many challenges that modern medical science still has to face.Firstly, as medicine has...
Electrospun bead-free chitosan silk fibroin combination nanofibers were designed. The composite NFs support the growth and osteogenic differentiation of human fetal osteoblastic [hFOB] cells, CS improves hFOB differentiation while SF supports hFOB proliferation. By choosing a proper mixture of CS and SF, CS/SF NFs will be appropriate for bone tissue engineering applications. [2]Fibers with nanoscale diameters supply a benefit because of the high surface area for biomaterial scaffolds....
Magnetic resonance imaging and positron emission tomography are modern ways of taking pictures of the human body. MRI machines use strong magnets and a computer to take very high-quality pictures, whilst PET machines use special chemicals and a computer to take lower quality pictures. MRI pictures show bones and organs very clearly, whilst PET pictures do not show bones or organs, but allow the functions of organs to be seen in real time. When a person has cancer, MRI and PET pictures can be...