Traffic Flow Analysis and Solutions to Ease Traffic Flow at Unsignalized Taxila Intersection

Transportation system of a city affects all aspects of its citizen’s economic and personal activities. At a general level, the traffic problem considered as a situation of mismatch between supply (i.e., roads and their capacity) and demands (i.e., travel needs). The city administrators have tried to balance it by creating infrastructures (e.g., new roads, expanding capacity, under pass) or policy changes (e.g., banning heavy traffic movement during peak or day hours). Major problems that motorists are facing on highways intersection are congestion, accidents, and costs. Too many automobiles, trucks, buses, bicycles, and pedestrians are attempting to use the same space to reach their destiny. N-5 (major highway in Pakistan) passes through Taxila where at some intersection extreme traffic congestion sets in. Transportation problems are evident at some locations with complex roadway geometrics. So a traffic study is to be conducted to quantify the extent of transportation problems. This study aims to gain information and understanding about traffic system through the derivation of traffic information from traffic data, and then to apply this information in the assessment of the performance of traffic systems and their interaction with land use activities. This research is an effort to provide suggestion and recommendations to enforce an efficient traffic flow system

Comparison of palatal rotational flap with buccal advancement flap for the treatment of oroantral fistula

Objective: To compared outcome of palatal rotational flap with buccal advancement flap for the treatment of oroantral fistula. Methodology: This Randomized controlled clinical trial was performed in outpatient Department of Oral and Maxillofacial Surgery Unit, Punjab dental hospital, Lahore from June 2013 to December 2013. One hundred and twenty patients were included which were divided into two groups; Group A (buccal advancement flap) and Group B (palatal rotational flap). Both procedures were performed under local anesthesia. Oral penicillin and nasal decongestant were prescribed after the procedure. Results: The mean±SD ages were 35.10±8.56 years of group A and 35.73±9.40 years in group B. There were 40 males and 20 females in group A, while in group B there were 42 males and 18 females. Male to female ratios were 2:1 and 2.4:1. Fifty two patients (86.6%) have success and 8 patients (13.4%) have no success in group A while in group B, 56 patients (93.3%) have success rate and 4 patients (6.7%) have no success rate. Statistically, there was no significant difference (P>0.05). There is no statistical difference in the outcome of oroantral fistula for both local and distant flaps. Conclusion: Treatment options for OAC/OAF include various soft tissue flaps with or without bone grafting and the best method should be emphasized upon to achieve proper closure. Buccal advancement flaps are best suited for small fistulas while palatal rotational flap or a combination of the two gives best results for large oroantral fistulas

Oral lichen planus and hepatitis C virus infection; a symbiotic relationship or a mere co-incidence?

Background: Lichen planus (LP) is a common idiopathic chronic inflammatory immune mediated mucocutanous disease that effects stratified squamous epithelia and appendices. Hepatitis C virus (HCV) infection is quite common across the world. A couple of reports have suggested positive association of HCV infection and oral lichen planus (OLP) and most of the studies are usually confined to Mediterranean and south European countries. Due to high incidence and suspected alliance between these two diseases in Pakistan, the following study was conducted with the view that it may help clinicians to set guidelines for HCV testing of lichen planus patients.Methods: Approximately 11500 patients from general population coming to dental diagnostics department of Fatima Memorial Hospital, Lahore (from March 2015-February 2016) were screened clinically for OLP and by ELISA for HCV infection. Out of these 11500 patients 103 were selected one of them incidental and the other pre-diagnosed or both incidental and both pre-diagnosed. These patients were unaware but had either one or both OLP and HCV infection which was confirmed clinically and by ELISA respectively.Results: Majority of patients presenting for other dental complaints were unaware of these diseases process going on in them and was mostly an incidental finding by the clinician. Either one or both OLP and HCV infection were more conjoint in females comprising 77.7% of the total subjects. OLP alone was most common finding comprising 66.67% of the cases. HCV infection alone was present in 15.53% whereas 16.50% subjects showed presence of both OLP and HCV infection.Conclusions: The current study could not detect statistically significant relationship between OLP and HCV infection in Pakistani population which could be due to genetic variation or may be geographic relationship

Current status and overview of farm mechanization in Pakistan – A review

Economic growth in Pakistani agricultural sector lags behind growth in industry and services, creating an ever widening rural-urban income fissure.  Agricultural mechanization plays a strategic role in improving agricultural production and productivity in developing countries. The average farm size in Pakistan is small (2.5 acres) and small and marginal land holdings (less than 2.0 ha) account for 85% of land holdings.  Mechanizing small and non-contiguous group of small farms is against ‘economies of scale’ for individual ownership of farm machinery. It was observed that there was a direct correlation between farm power availability and productivity during the past six decades. Being an agrarian country, mechanization can be called as back bone of Pakistan’s economy as it optimizes the use of biological, chemical and hydrological inputs.  So far, Pakistan has only experienced selective farm mechanization as this concept has remained limited to use of tractors only and at the country level, the temporal analysis shows that an increase in tractor population from 1975 -1984 was about 341% while it was 61% from 1984-1994.  At present there are about 0.94 million tractors in Pakistan, which alone provides 0.84 hp/acre.  Land preparation is the only operation that is nearly 100% mechanized in the country for almost all crops with 901 thousand chisel plough and 108 thousand Mould board ploughs.  The market of planting and spraying machinery has grown from 70 and 21 thousands in 2004 to 295 and 1438 thousands in 2014 respectively due to the inclination of the farming community towards mechanized sowing and spraying.  The thrasher’s market in Pakistan is estimated at 20,000-30,000 units annually by sales resulting in nearly 100% mechanized threshing operation for cereal crops. By increasing the available horse power per hectare and by the proper management of agricultural machinery the average crop yield can be enhanced

Design and development of a multi-functional bi-anisotropic metasurface with ultra-wide out of band transmission

This paper presents a multi-functional bi-anisotropic metasurface having ultra-wide out of band transmission characteristics. The proposed metasurface is comprised of 90° rotated T-shaped configuration yielding greater than or equal to 50% out-of-band transmission from above L- to X-band. Moreover, this metasurface achieves a maximum of 99% out-of-band transmission at lower frequency bands (i.e., L-band). The simultaneous absorptive and controlled reflection functionalities are achieved at 15.028 to 15.164 GHz along with polarization-insensitive and angular stable properties. The proposed metasurface yields state-of-the-art features compared to already published papers and has broader scope for Fabry Perot cavity, Radar cross-section (RCS) reduction, electromagnetic compatibility and interference (EMC/I) shielding, selective multi-frequency bolometers, ultrathin wave trapping filters, sensors and beam-splitters in the microwave domain