Click

A new metal-free one-pot three-component procedure towards fully substituted triazolochromenes has been developed, starting from commercially available materials. Salicylaldehydes and nitroalkenes were reacted under solvent-free conditions, followed by a 1,3-dipolar cycloaddition of the intermediate 3-nitro-2H-chromenes with organic azides in a one-pot two-step sequence. The triazolochromenes were formed with complete regioselectivity and new biologically relevant structures were synthesized via extension of the developed procedure and via postfunctionalization. The mechanochemical synthesis was carried out for several salicylaldehydes and gave a clear improvement in the yield of the corresponding triazolochromenes and consequently showed to be a viable alternative for solid salicylaldehydes.

The Cubesat Laser Infrared CrosslinK (CLICK) mission is a technology demonstration of <1.5U nanosatellite laser communications terminals, with downlinks from low-Earth orbit altitudes of 400-600 km to a portable optical ground station, and crosslinks over ranges from 25-580 km. The mission has two separate launches and three total 3U CubeSats. The first flight, with a single 3U CubeSat, CLICK-A will demonstrate a >10 Mbps downlink. On the second flight, with two identical 3U CubeSats, CLICK-B/C, a >20 Mbps crosslink will be demonstrated in addition to downlinks. In this paper representative link budgets for the crosslink are presented, including both communications and beacon lasers. The payload Pointing, Acquisition and Tracking (PAT) system is introduced, and the performance of the second stage closed loop tracking signal processing is assessed. Errors below 1 μrad are reported from test and simulation. The communication detector of the payload is a 200 μm InGaAs Avalanch...

Heterogeneous networks have attracted a lot of interest due to its support provision for a large number of networks at an effective cost. Mobility Management also plays an important role in the heterogeneous network in providing a seamless mobility support for both devices and users, which poses a serious challenge. In this chapter, the researchers propose SIP-PMIP Cross-Layer Mobility Management in order to provide a seamless mobility in heterogeneous wireless networks. In effect, the researchers design a Cross-Layer Mobility Management Scheme, which can handle terminal, network, personal and session mobility. To demonstrate, video conferencing is included in the modeling, simulation and implementation of the module using Riverbed Modeler.

Innovative manufacturers have used Integrated Business Solutions (IBSs) as a means to co-create products and services to solve diverse business problems and more effectively compete in their field of endeavour. However, the efficacy and benefits of IBSs have been diminished due to the rigid method in which project management has been applied. This paper provides a conceptual approach for manufacturers to create new revenue sources in collaboration with their customers by adopting an agile project methodology that accommodates the interactive and iterative nature of IBS development. The research findings highlight the lack of success in IBSs using traditional project management as the delivery method. It provides an alternative solution in the use of an agile project management approach with its customer-centred and iterative mindset. This paper provides a conceptual model of the agile method known as Scrum and describes how it better aligns with innovative IBS development. Though bo...

Introduction: Temporomandibular joint disorder (TMD) is one the most common
maxillofacial disorders and its prevalence has been reported variously in different populations.
This study aimed to assess the prevalence of symptoms of TMD in dental students of Post
Basic Science course, Faculty of Dentistry, Guilan University of Medical Sciences.
Materials and Methods: This descriptive cross-sectional study was carried on 120 dental
students (from 140 students) who participated and answered the questions of this study in 2016.
Demographic data of dental students were collected and all subjects were clinically examined.
The diagnosis of TMD was confirmed on the basis of its signs and symptoms, including click,
pain, or tenderness of masticatory muscle, jaw deviation during mouth opening and limited
mouth opening. The prevalence of TMD in subjects was assessed with respect to age, gender,
marital status, parafunctional habits, history of trauma, and nutritional status. The obtained data
were analyzed by SPSS 21 (P<0.05).
Results: The sample consisted of 120 subjects, 55 (45.8%) women and 65 (54.2%) men. The
prevalence of TMD was found as 28%, which had a relationship with parafunctional habits,
muscle tenderness, tooth wear, jaw dislocation, trauma, temporomandibular joint pain, and
in some symptoms with age. While it was not associated with factors such as gender, marital
status, nutrition type, click, deviation, headache, migraine, earache, posterior tooth loss, and
contact in balancing side.
Conclusion: TMD is a relatively common condition among dental students. By providing the
necessary training for students, especially for those who are at risk (patients with parafunctional
habits, tooth wear, jaw dislocation, trauma), we can prevent TMD.