Doctor of Philosophy

dissertationDuring the last decade, the growth rate of outward foreign direct investment (FDI) from developing and transition economies has been outpacing that from developed economies. Their investment in other developing countries represents a burgeoning instance of South-South cooperation. The three essays in this dissertation examine the key issues and potential challenges of South-South FDI. The first chapter observes the growing importance of South-South FDI flows. With the drying up of outward FDI flows from developed countries since the financial crisis, the importance of investment from other developing countries increased and accounted for an estimated 34% of the world's outward FDI in 2010, compared with 25% in 2007. A large share of outward FDI stock from developing and transition economies is concentrated in the services sector. The nature of multinational companies (MNCs) is also changing with an increasing number of countries in developing and transition economies hosting such companies. When Southern MNCs invest abroad, they rarely have access to proprietary assets such as technology, financial capital, brands, and technical know-how. They are able to catch up with Northern MNCs through strategic and organizational innovations. They have greater access to network capital suitable for developing country markets. This network capital might include information on supply lines, local financing, local tastes, bureaucratic procedures, minimizing transaction costs, and other local idiosyncracies. The establishment size of Southern MNCs tends to be on average much smaller than the establishment size of Northern MNCs. Southern establishments are also comparatively less productive and tend to pay lower wages than Northern establishments. Until recently, the parsimonious explanation for the scarcity of capital flows to developing countries ranged from human capital to institutional risk. Although the expected return on investment might be high in many developing countries, it does not flow there because of the high level of uncertainty associated with those expected returns. The second chapter sheds light on the question to what extent the alternative explanations of Lucas paradox holds particularly for South-South FDI. Using a bilateral panel data set, I estimate an augmented gravity model using the Poisson pseudo-likelihood estimator. The empirical evidence suggests that per capita income, human capital, and average institutional quality are not important variables explaining South-South FDI. Asymmetric information as proxied by the weighted distance variable is highly significant. Southern MNCs underinvest in markets that are remote and where access to network capital and accurate and timely local information is difficult. Southern MNCs require network capital and local host country information to overcome their disadvantage in proprietary assets. Therefore, information asymmetry may be a greater concern to Southern MNCs than human capital or institutional risk. Lastly, South-South FDI is also more sensitive to natural resource endowments and regional free trade agreements than North-South FDI. Recently policymakers in developing countries have encouraged South FDI as a means to encourage productivity growth and technology transfer. However, Southern MNCs seldom have proprietary assets that foster positive externalities and contribute to productivity spillovers. Chapter 3 investigates the contribution of Southern FDI in enhancing efficiency in Rwanda. Based on a sample of 6,707 private sector firms, the quantile regression technique is employed. By estimating quantile regressions, I am able to test for differences in productivity and productivity spillovers by North and South FDI across the productivity conditional distribution. The results suggest that productivity in Rwanda is improved with the entry of both North and South FDI. However, the effect North FDI on productivity is stronger than that of South FDI. Moreover, productivity spillovers stemming from South FDI are limited to low productivity local firms, which suggests that any efforts to attract South FDI should take into account the policy objectives of an economy as well as the firm productivity distribution involved

A numerical study to assess the effect of heterogeneity on CO2 storage potential of saline aquifers

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Colonizer to Drug Resistant isolate, What is Happening to our Staphylococcus Aureus?

Objective: To evaluate resistant trend of multiple antimicrobial agents against Staphylococcus aureus isolates along with its prevalence.  Material and Methods: This prospective descriptive study was carried out in the department of microbiology Allama Iqbal Medical College Lahore from 1st January 2015 to 25 may 2016. Simple random technique was used, and 4570 clinical samples (Pus, blood, pleural fluid, tracheal aspirate, urine, sputum, HVS) were received from ICU, Surgical Unit, Medical Unit and OPD for culture sensitivity testing, antimicrobial resistant trend was tested according to CLSI guidelines  Results: Maximum isolates were recovered from surgical unit 31.9%, sample-wise maximum isolates were recovered from pus samples 26.8%. age group and genderbased distribution showed among male’s high isolation rate was observed in 21-40 years while in females 41-60-year age group. Every isolate was (100%) susceptible to linezolid, vancomycin and teicoplanin, cotrimoxazole also showed very low rate of drug resistance only 8.3%, while penicillin Doxycycline, Ciprofloxacin, Erythromycin showed 95.9%,69.8%55.4% and 48.2% drug resistance respectively, 43-45% drugresistant rate observed in case of Co-amoxiclave, Methicillin, Gentamicin, Fusidic Acid, Amikacin, and Clindamycin  Conclusion: Linezolid, Vancomycin, and Teicoplanin are best therapeutic Choices against Staphylococcus aureus associated infections

Abiotic Stress Tolerance in Cotton

Cotton (Gossypium hirsutum L.) is a vital fiber crop that is being cultivated under diverse climatic conditions across the globe. The demand for cotton and its by-products is increasing day by day due to more consumption of this fiber in the textile industry and the utilization of cotton seed as a source of edible oil. However, the average seed cotton yield in the world is below that of the potential yield of cultivars. The factors responsible for low yield includes shortage of approved seed, pest and disease attack, weed infestation, unwise use of nutrients, and the incidence of abiotic stresses (including drought, heat, and salinity). Among these, the abiotic stresses are a single major factor, which is responsible for reducing the yield now and will affect the productivity of cotton in future. In this scenario, it is necessary to adopt ways to improve the tolerance of cotton against abiotic stresses. The strategies for improving tolerance against abiotic stresses may include the wise use of macro- and micronutrients, the use of osmoprotectants, the use of arbuscular mycorrhizal fungi, and the plant-growth promoting rhizobacteria

Impact of opioid-free analgesia on pain severity and patient satisfaction after discharge from surgery: multispecialty, prospective cohort study in 25 countries

Background: Balancing opioid stewardship and the need for adequate analgesia following discharge after surgery is challenging. This study aimed to compare the outcomes for patients discharged with opioid versus opioid-free analgesia after common surgical procedures.Methods: This international, multicentre, prospective cohort study collected data from patients undergoing common acute and elective general surgical, urological, gynaecological, and orthopaedic procedures. The primary outcomes were patient-reported time in severe pain measured on a numerical analogue scale from 0 to 100% and patient-reported satisfaction with pain relief during the first week following discharge. Data were collected by in-hospital chart review and patient telephone interview 1 week after discharge.Results: The study recruited 4273 patients from 144 centres in 25 countries; 1311 patients (30.7%) were prescribed opioid analgesia at discharge. Patients reported being in severe pain for 10 (i.q.r. 1-30)% of the first week after discharge and rated satisfaction with analgesia as 90 (i.q.r. 80-100) of 100. After adjustment for confounders, opioid analgesia on discharge was independently associated with increased pain severity (risk ratio 1.52, 95% c.i. 1.31 to 1.76; P < 0.001) and re-presentation to healthcare providers owing to side-effects of medication (OR 2.38, 95% c.i. 1.36 to 4.17; P = 0.004), but not with satisfaction with analgesia (beta coefficient 0.92, 95% c.i. -1.52 to 3.36; P = 0.468) compared with opioid-free analgesia. Although opioid prescribing varied greatly between high-income and low- and middle-income countries, patient-reported outcomes did not.Conclusion: Opioid analgesia prescription on surgical discharge is associated with a higher risk of re-presentation owing to side-effects of medication and increased patient-reported pain, but not with changes in patient-reported satisfaction. Opioid-free discharge analgesia should be adopted routinely

Reducing the environmental impact of surgery on a global scale: systematic review and co-prioritization with healthcare workers in 132 countries

Abstract Background Healthcare cannot achieve net-zero carbon without addressing operating theatres. The aim of this study was to prioritize feasible interventions to reduce the environmental impact of operating theatres. Methods This study adopted a four-phase Delphi consensus co-prioritization methodology. In phase 1, a systematic review of published interventions and global consultation of perioperative healthcare professionals were used to longlist interventions. In phase 2, iterative thematic analysis consolidated comparable interventions into a shortlist. In phase 3, the shortlist was co-prioritized based on patient and clinician views on acceptability, feasibility, and safety. In phase 4, ranked lists of interventions were presented by their relevance to high-income countries and low–middle-income countries. Results In phase 1, 43 interventions were identified, which had low uptake in practice according to 3042 professionals globally. In phase 2, a shortlist of 15 intervention domains was generated. In phase 3, interventions were deemed acceptable for more than 90 per cent of patients except for reducing general anaesthesia (84 per cent) and re-sterilization of ‘single-use’ consumables (86 per cent). In phase 4, the top three shortlisted interventions for high-income countries were: introducing recycling; reducing use of anaesthetic gases; and appropriate clinical waste processing. In phase 4, the top three shortlisted interventions for low–middle-income countries were: introducing reusable surgical devices; reducing use of consumables; and reducing the use of general anaesthesia. Conclusion This is a step toward environmentally sustainable operating environments with actionable interventions applicable to both high– and low–middle–income countries

Colonizer to Drug Resistant isolate, What is Happening to our Staphylococcus Aureus?

Objective: To evaluate resistant trend of multiple antimicrobial agents against Staphylococcus aureus isolates along with its prevalence.  Material and Methods: This prospective descriptive study was carried out in the department of microbiology Allama Iqbal Medical College Lahore from 1st January 2015 to 25 may 2016. Simple random technique was used, and 4570 clinical samples (Pus, blood, pleural fluid, tracheal aspirate, urine, sputum, HVS) were received from ICU, Surgical Unit, Medical Unit and OPD for culture sensitivity testing, antimicrobial resistant trend was tested according to CLSI guidelines  Results: Maximum isolates were recovered from surgical unit 31.9%, sample-wise maximum isolates were recovered from pus samples 26.8%. age group and genderbased distribution showed among male’s high isolation rate was observed in 21-40 years while in females 41-60-year age group. Every isolate was (100%) susceptible to linezolid, vancomycin and teicoplanin, cotrimoxazole also showed very low rate of drug resistance only 8.3%, while penicillin Doxycycline, Ciprofloxacin, Erythromycin showed 95.9%,69.8%55.4% and 48.2% drug resistance respectively, 43-45% drugresistant rate observed in case of Co-amoxiclave, Methicillin, Gentamicin, Fusidic Acid, Amikacin, and Clindamycin  Conclusion: Linezolid, Vancomycin, and Teicoplanin are best therapeutic Choices against Staphylococcus aureus associated infections

Immobilization of Pseudomonas aeruginosa static biomass on eggshell powder for on-line preconcentration and determination of Cr (VI)

In the present work, a novel continuous flow system (CFS) is developed for the preconcentration and determination of Cr (VI) using Pseudomonas aeruginosa static biomass immobilized onto an effective and low-cost solid support of powdered eggshells. A mini glass column packed with the immobilized biosorbent is incorporated in a CFS for the preconcentration and determination of Cr (VI) from aqueous solutions. The method is based on preconcentration, washing and elution steps followed by colorimetric detection with 1,5-diphenyl carbazide in sulphuric acid. The effects of several variables such as pH, retention time, flow rate, eluent concentration and loaded volume are studied. Under optimal conditions, the CFS method has a linear range between 10 and 100 μg L-1 and a detection limit of 6.25 μg L-1 for the determination of Cr (VI). The sampling frequency is 10 samples per hour with a preconcentration time of 5 mins. Furthermore, after washing with a 0.1 M buffer (pH 3.0), the activity of the biosorbent is regenerated and remained comparable for more than 200 cycles. Scanning electron microscopy reveals a successful immobilization of biomass on eggshells powder and precipitation of Cr (VI) on the bacterial cell surface. The proposed method proves highly sensitive and could be suitable for the determination of Cr (VI) at an ultra-trace level