2,087 research outputs found
Reservoir Characterization and Modelling with Diagenetic Trends of carbonates of the Kawagarh Formation: A Section exposed in the Kala-Chitta Range, Pakistan
Present study is focused on the diagenetic studies and reservoir characterization of the Cretaceous KawagarhFormation exposed in the Gandab village, Kala-Chitta range, north-western Himalayan Fold-and-Thrust belt, Pakistan.The formation is composed of argillaceous limestone and dark grey marls. A total of thirty-three representativecarbonate rock samples were collected at equal intervals of three meters. Various diagenetic features includingcementation, micritization, pyrite precipitation, neomorphism, fracturing, sparitization and stylolitization were observedin the studied rocks which occur in the marine, meteoric and deep burial diagenetic environments respectively. Suchdiagenetic features control the reservoir quality of the rock unit. Porosity types include mostly vuggy and fracture,while minor stylolitic porosity were noted with quantity ranging from 2.66% to 3.88%. The carbonates of KawagarhFormation are highly fractured, but the filling of these fractures due to precipitation of calcite or micritic mud hasgreatly reduced its reservoir potential, while some unfilled fractures, stylolites and vuggs are the dominant factors thatenhance the reservoir potentiality of the Kawagarh Formation. However, the porosity values still do not mark the levelof reservoir rock. These diagenetic studies revealed very less chances for hydrocarbon accumulation as no significantporosity values have been observed and overall reservoir potential is characterized as poor
Obligation and Violation of Safety Standards in Construction Industry of Pakistan
In developing countries like Pakistan, construction is one of the most hazardous industrial sectors. Every year, thousands of workers received serious injuries and accidents and this uninterrupted dilemma is growing day by day. Due to this alarming position, there is a need to evaluate the construction accidents along with their causes related to them. This research presents the identification of the factors contributing to construction accidents in Pakistan and suggests key prevention measures on the basis of statistical analysis. A survey questionnaire has been developed and used for the data collection. In total, 164 respondents ranging from foreman to unskilled labor were approached and the questionnaires were filled. Response rate was excellent resulting in 143 valid responses. The results were analyzed and ranked. The accidents are attributed mainly due to. (a) tool accidents; (b) fall from height; and (c) struck by material. Results indicated that management factors largely contributing to the accidents causation rather than workers factors or social factors and need serious consideration. Based on the results of the analysis, prevention measures are recommended which includes: (i) involvement and commitment of top management; (ii) safety education in terms of training for all managers and supervisors; (iii) awareness and identification of unsafe work practices (iv) necessity of personal protective equipment and first aid equipment; and (v) reporting and maintaining injuries and accident records. This work may be useful for the construction practitioners to minimize the accident rate at High rise building construction Projects
Academic Library Resources and Services at Higher Education Institutions during COVID-19 Pandemic: A Case of Students’ Satisfaction
Regression Model for Predicting Soaked CBR from UCC
ABSTRACT. Flexible pavement is a multi-layered structure with a subgrade layer acting as the pavement structure’s foundation. The performance and strength of soil for its use as a subgrade are ascertained by its California Bearing Ratio (CBR) value. CBR test is a technically extensive and labor-intensive mechanism that could cause delays in carrying out construction projects, which would raise the construction cost. Therefore, highway engineers need to design a predictive model for quick assessment of the CBR of subgrade soil. In this research, eight specimens of disturbed soil were obtained from Rawalpindi Division, Pakistan. All soil samples were subjected to laboratory testing and categorized according to the AASHTO soil Classification System. The specimens were subjected to soaked CBR, and unconfined compression tests based on Maximum Dry Density (MDD) and Optimum Moisture Content (OMC) values, acquired from the Modified Proctor Compaction test. An empirical correlation between soaked CBR and unconfined compressive strength test is developed by the Suitable Trend-Line Method in Microsoft excel. From the single linear regression model, the value of the coefficient of correlation is found (0.98) indicating a very good correlation between soaked CBR and UCC strength test.
Keywords: Regression Model, Correlation Coefficient, California Bearing Ratio (CBR), UCC strength
Does Financial Development Induce Inflation? ARDL Based Evidence from Pakistan
The study explores the dynamic association of financial expansion in curbing inflation and thereby assessing the general economic welfare strategies employing data over 1974-2016 for Pakistan. Econometric sophistication rests in the employment of autoregressive distributed lag (ARDL) bound test of co-integration with short run disequilibrium models. The outcome corroborates that inflation and financial development with other controlled variables are co-integrated. The findings also corroborate that broad money, domestic credit to private sector, government expenses, and personal remittances are crucial indicators of financial development and diversely linked with inflation over the period of analysis. Specifically, broad money and government expenses corroborate a long run impact on inflation conforming to the idea of quantity theory of money neutrality. Likewise, domestic credit has shown noteworthy but low positive drive to inflation in long time of span, albeit domestic credit has insignificantly linked to inflation for the short span of time. These findings inter alia imply for the promotion of sound domestic banking/financial sector for credit market and new strategies for controlling the broad money/government expenses to curb the unintended rampant level of inflation in Pakistan
PHYTOCHEMICAL SCREENING OF DIFFERENT ROOT EXTRACTS OF Ageratum conyzoides AND THEIR POTENTIAL BIOACTIVE PROPERTIES
The present study was conducted to determine different classes of secondary metabolites of Ageratum conyzoides root extracts and to evaluate their antioxidant, antibacterial, and antifungal potentialities using various pathogenic fungal and different gram-positive/gram-negative bacterial strains. The roots powder was subjected to ultrasonic-assisted extraction with n-hexane, acetone, ethanol, and EtOH:H2O(1:1). The screening of phytochemicals indicated the existence of terpenoids, alkaloids, coumarins, sterols, flavonoids, and glycosides in the root extract of A. conyzoides. However, the absence of saponins, tannins, anthocyanidins, anthraquinones, and phlobatannins was observed. The results indicated a reasonable antibacterial (against gram-negative and gram-positive bacteria), and antifungal potential. The antibacterial activity of the ethanolic extract was highest against all four strains of bacteria and was also comparable to the standard medicines used. However, antifungal activity was highest in EtOH:H2O (1:1) extract. Moderate antioxidant properties were also demonstrated, favoring the importance of the roots of this plant from a medicinal point of view
Knowledge Management as a Strategy & Competitive Advantage: A Strong Influence to Success (A Survey of Knowledge Management Case Studies of Different Organizations)
There has been a great deal of recognition in the business world that information and knowledge management can be vital tools in organizations. Knowledge management can be proven a competitive advantage of any organization. The rationale of this exploratory study is to investigate the link among knowledge management system & techniques and organizational success by using knowledge as completive advantage. It is a qualitative research study of different case studies of the use of knowledge management as competitive advantage in different organization that leads to success. A total of 8 different organizations are studied and results propose that by using knowledge management as strategy and competitive advantage, these organizations earn high profit. And it has a great influence to success. Implication and Directions are also discussed together with limitation and suggestions for future research. Keywords: Knowledge Management, Organization, Tacit Knowledge, Explicit Knowledge, KMS, KM Strategies, KM Technologies, Productivity, Competitive Advantage
Determinants of capital structure : an empirical study of KSE listed MNCs in Pakistan
Multinational Corporations (MNCs) are generally financed with a mixture of internal debt and equity from the parent corporation. Yet, financial theory has relatively little to say regarding the capital structure and its determinants in an international setting. This research empirically examines the major determinants of capital structure decisions of Multinational Corporations listed on the Karachi Stock Exchange for the period 2005-2017. The data was studied using panel data regression analysis. Results suggest that apart from traditional determinants such as profitability, tangibility, size, Non Debt Tax Shield (NDTS) etc., specific international factors such as political risk, exchange rate risk, agency costs and bankruptcy costs are relevant to the multinational capital structure decision. The results are broadly consistent with theory. It is therefore recommended that the management of listed MNCs in Pakistan should always consider their positions using these capital structure determinants as important inputs before embarking on debt financing decision.peer-reviewe
Bio-inspired computational heuristics to study Lane–Emden systems arising in astrophysics model
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