Studies on Beneficiation of Manganese Ore through High Intensity Magnetic Separator

Upgradation techniques like wet sieving and magnetic separation were used to evaluate the beneficiation potential of manganese ore. During wet sieving, manganese content in raw ore was upgraded from 27% to a maximum value of 38% in the concentrate with a recovery of 30%. Size classification was found to have no measurable effect on manganese grade in magnetic separation. In the unsieved ground ore, manganese content of 45% was achieved with a recovery of 23% and Mn/Fe ratio of 19% at a magnetic intensity of 8500 Gauss. At the same operating conditions, SiO2 was reduced from 56% in the raw ore to 30% in the magnetic fraction. So, wet sieving technique leads to a comparatively lower manganese grade but better recovery. Conversely, a magnetic separation technique produced higher manganese grade but relatively lower recovery. Blending of the upgraded manganese ore with high grade iron ore can be done to achieve the required Mn/Fe ratio

THE EFFECT OF COMMITMENT AND MOTIVATION ON HUMAN TALENT AND ITS CONTRIBUTION TO ORGANIZATIONAL PERFORMANCE

Human Capital has received major attention in present era research. Talent can be any individual who is committed, motivated and performs effectively. The successful utilization of individual capabilities can contribute positively to performance and enhance organizational image. It is very challenging to retain talent with in organization and keep them motivated. Most importantly they are one of the sources of competitive advantage. Talent drain and executive theft is the major challenge faced by the HR managers throughout the corporate world. Therefore it is important to retain them by keeping them motivated and committed to the organization. This research studies the effect of commitment and motivation on individual and how that contributes towards organizational performance. If employees perceive that their efforts are recognized by the organization they feel motivated and level of commitment will rise. Paper is based on conceptual study. In future empirical study will be conducted to test the conceptualized model.commitment, individual performance, motivation, organizational performance, talent.

Comparison of Outcomes in Early versus Delayed Cholecystectomy in Patients of Acute Biliary Pancreatitis

Objective: to compare the outcomes of early versus delayed cholecystectomy in patients of mild to moderate acute biliary pancreatitis.Study Design: Randomizd controlled trialPlace and duration: study was conducted in general surgery department of Lahore General Hospital Lahore, Services Hospital Lahore and Holy Family Hospital Rawalpindi from January 2017 to January 2018.Methodology: All the patients who were diagnosed as mild to moderate acute biliary pancreatitis and selected for cholecystectomy. Data collection was done via non probability consecutive sampling included patients’ demographics, conversion to open surgery, hospital stay and complications were assessed. Results: The mean duration of surgery and mean length of stay of early group was 90.00±3.55 minutes and 9.06±1.16 days, respectively. Conversion to open, overall complications, preoperative and postoperative was noted as 18%, 12%, 2% and 10%, respectively. Mortality was observed as 2%. While, the mean duration of surgery and mean length of stay of delayed group was 91.14±2.15 minutes and 9.88±2.24 days, respectively. Conversion to open, overall complications, preoperative and postoperative was noted as 14%, 14%, 6% and n=4 (8%), respectively. Mortality was observed as 6%.The differences were statistically significant for duration of surgery and length of stay (p=0.005) and (p=0.001), respectively.Conclusion: Results of our study reveal that patients of acute biliary pancreatitis treated with cholecystectomy at the index day have shorter hospital stay and less biliary events as compare to delayed cholecystectomy. Similarly conversion to open surgery, duration of surgery and complications are also less in early cholecystectomy. Keywords: acute biliary pancreatitis, early cholecystectomy, delayed cholecystectomy, hospital stay, conversion to open surgery

An Analysis of Job Related Factors and Personality Traits on Teachers’ Ill-Health, Performance and Job Satisfaction

Teacher’s ill-health & job strains particularly in higher education sector is usually more deceptive as compared to other professions because of its vague nature of roles and is dissimilar to other professions and has substantial connections with numbers of scholars in class, their numerical assessments, workload issues, miserable organizational practices, job insecurity and inadequate recognition. Moreover, the antecedents and consequences of job related strains varies from person to person because of our different personality types and as we are all unique in our perceptions and behaviors. This exploratory research aimed to investigate & explore the factors at the work environment which have a significant impact on faculty well-being, and the possibilities of improvement of the work environment for academic world with particular reference to a public sector university. The results revealed inverse relationship between job strains and performance. The significant job related factors causing stress for male and female faculty members were different. Furthermore female faculty members and faculty members with Type A personality reported higher levels of ill-health. Type A personality also reported higher performance when compared with Type B & Type A

An Analysis of Students Academic Performance: A Case Study of Sarhad University, Peshawar, Pakistan

The researcher has tried to investigate the factors affecting academic performance of graduate students in this article. In the study academic performance (student’s grades/marks) is taken as a dependent variable and the gender, age, Attendance, schooling, Household Income, residential area, medium of schooling; daily study hours and accommodation as independent variables. 100 students were selected though simple random sampling for data collection and the data was collected through structured questionnaire from the different departments of Sarhad University of Peshawar. For analysis, linear regression analysis, correlation analysis, and descriptive analysis are used. It was extracted from the findings that attendance, Household income and daily study hours significantly contribute to the academic performance of graduate students.Â

School Heads’ Perceptions About Their Leadership Styles

This study explores school heads’ perceptions regarding their school leadership styles. The study adopted qualitative design. The sample of the study consisted of 10 male and 10 female head teachers from Peshawar, Khyber Pakhtunkhwa. Data were collected using semi-structured interviews. Findings revealed that school heads adopted a number of leadership styles. The main leadership styles found included instructional leadership, transformational leadership and moral leadership. These different leadership styles were adopted keeping in view the need of the different situations that heads found themselves working in. The study has important implications for school management, school teachers, researchers and policy makers.Keywords: instructional leadership, moral leadership, school leadership,transformation leadershi

The Association Between Subclinical Hypothyroidism and Erectile Dysfunction

Objective: To assess the association between subclinical hypothyroidism and erectile dysfunctionStudy Design: cross sectional study.Study Place and Duration: department of General Medicine at Lahore General Hospital Lahore, Services Hospital Lahore and Holy Family Hospital Rawalpindi from January 2018 to June 2018Material and methods: A total number of 180 subjects were involved in this study. The study patients were categorized into three groups’ i.e. erectile dysfunction with sub clinical hypothyroidism, erectile dysfunction with euthyroidism and controls with euthyroidism. Data was subjected statistical analysis with the help of computer software SPSS version 23. Mean±S.D was calculated for quantitative variables. For qualitative variables, frequency and percentages were calculated. Independent t test and Chi square was applied to assess the statistical difference. P value of less than or equal to 0.05 was considered as statistically significant.Results: The difference between the ED with SCH group and the ED with euthyroidism group was statistically insignificant for FT3 (p=0.135) and E2 (p=0.318). The difference between the ED with SCH group and the controls with euthyroidism group was statistically significant except FT3 (p=0.098).Conclusion: Patients with erectile dysfunction commonly present with subclinical hypothyroidism and it can be concluded that subclinical hypothyroidism is associated with erectile dysfunction. However severity of erectile dysfunction is not associated to subclinical hypothyroidism. From the results of this study, recommendations regarding the need of thyroid function screening for men presenting with erectile dysfunction can be made. Keywords: Subclinical Hypothyroidism, Erectile Dysfunction, Euthyroidism, Thyroid, thyroxine, triiodothyronin

A Handoff using Guard Channels Scheme (HGCS) for Cognitive Radio Networks

Spectrum handoff is a very important phenomenon in Cognitive Radio (CR) networks. It provides flawless transmission upon the arrival of primary user (PU) while the channel is in use by the secondary user (SU). Spectrum handoff process provides the SUs with the opportunity to continue their communication on other unoccupied channels as soon as the PU repossesses its channel. FCC (Federal Communications Commission) has released new White Space rules in September 2010 which eliminate the requirement of spectrum sensing, making CRs more flexible. In addition, the CR is to be equipped with TV channel database. Taking these new rules into account, this paper suggests a new handoff scheme, HGCS (Handoff using Guard Channels Scheme), which makes effective use of the guard channels for communication. A preemptive resume priority (PRP) M/G/1 queuing network model is proposed to assess total service time for the suggested HGCS and comparing it to the existing random proactive-decision handoff scheme. Simulation and numerical results verify that HGCS can minimize the handoff delay, hence reduces the total service time compared to the random proactive approach

Alpha-glucosidase inhibitory and antioxidant activities of various extracts of aerial parts of Fagonia indica Burm. F.

Purpose: To investigate in vitro antioxidant and anti-diabetic potentials of Fagonia indica Burm.f. Var. indica in order to provide scientific evidence for its traditional use. Methods: Cold maceration method was employed for the preparation of extracts of aerial parts of the plant using chloroform, n-hexane, methanol and water as solvents. Total flavonoid and polyphenolic content of various extracts were determined by standard methods. The antioxidant and anti-diabetic activities of the extracts were determined using 1, 1-diphenyl-2-picrylhydrazyl (DPPH) and in vitro αglucosidase (maltase) inhibitory assays, respectively. Results: Preliminary results indicated the presence of various phytochemicals in the extracts. The chloroform extract exhibited the highest contents of total flavonoids (65.98 ± 1.63 mg QE/g) and polyphenols (26.75 ± 1.09 mg GAE/g). This extract also showed the highest free radical scavenging (64.74 ± 1.43 %) with IC50 value of 34.18 ± 5.57 µg/mL while the methanol extract exerted the highest αglucosidase (maltase) inhibitory activity (45.22 ± 0.46 %) with half-maximal concentration (IC50) of 220.4 ± 0.41 µg/mL. Conclusion: The extracts of the aerial parts of Fagonia indica possess significant anti-diabetic and antioxidant effect, thus justifying the traditional use of the plant for treatment of diabetes