Experimental study of desalting crude oil

The project was done on AL-NOOR crude oil the process desalting was difficult for these reasons. The variance amongst the oil density & water density is small and oil’s viscosity is relatively large so that the rate of droplet setting of water is few in the desalter. Heavier oils as well tend to include additional amounts of naturally occurred emulsifiers in comparison to the lighter crude oil this behave coalescence of a water droplet and allow the formation of stable emulsions in the desalter. The aims of the current study are: Find a new method to extract water from crude oil emulsions, which involves: Determine conductivity of water in crude oil which in turn help to determine the salt amount in the emulsion and determine the volume of extracted water from crude oil. The importance of this research comes from the fact that it addresses the removal of reservoirs water from crude oil in order to reduce the wear and tear of equipment for storing and transporting crude oil, which contributes to reducing costs and maintaining environmental integrity

Genomic analysis of tyrosine hydroxylase gene sequence variations and its association with D-9- tetrahydrocannabinol dependence in addicts

Purpose: To elucidate the genetic basis of drug addiction by conducting a genetic analysis of TH (tyrosine hydroxylase) gene and the novel polymorphisms that might help in understanding addiction and its molecular basis. Methods: Forty-two subjects were recruited into three groups for this study. DNA was isolated from the individuals. PCR amplification of TH gene was carried out and amplicons were sequenced. Genomic characterization of TH gene provided five polymorphic loci – TH 1, TH 2, TH 3, TH 4 and TH 5 which were found among all the groups. Results: According to Shannon’s diversity index, the studied population was between 0.0762 and 0.6032. Heterozygosity index depicted that TH 1 locus was less heterozygous (0.3288), followed by TH 5 (0.3152). TH 1 (0.1462) was the least heterozygous. Genotypic analysis predicted that among these five loci, TH 4 (p = 0.039898) and TH 2 (p = 0.851716) were non-significant (p > 0.05) and obeyed Hardy Weinberg Equilibrium (HWE) law. There are few genetic changes in the studied population that can statistically be associated with drug addiction. Still, their genotypic distribution in the gene pool was very low. Conclusion: On the basis of these findings, drug addiction in the studied population is more likely a social issue rather than a genetic one. Keywords: Tyrosine hydroxylase, SNP, Drug dependenc

Left atrial volumes and associated stroke subtypes.

Background: Cardio embolism and cerebrovascular atherosclerosis are two major mechanisms of stroke. Studies investigating associations between advanced echocardiographic parameters and stroke mechanisms are limited. Methods: This study is a standardized review of 633 patients admitted to the stroke service of a tertiary care hospital following a standardized stroke investigation and management pathway. Stroke subtypes were characterized using the Causative Classification System, using the hospitals online radiologic archival system with CCS certified stroke investigators. Patients with two mechanisms were excluded. Results: Patients with cardioembolic stroke had a higher proportion of atrial fibrillation (p \u3c 0.001), acute myocardial infarction (p \u3c 0.001) and ischemic heart disease (p \u3c 0.001). On electrocardiogram (ECG) and transthoracic Echo (TTE), patients with cardioembolic stroke had a greater atrial fibrillation (p \u3c .00), left ventricular thrombus (p \u3c .00), left ventricular ejection fraction \u3c30% (p \u3e\u3c .00) and global hypokinesia (p \u3c .00) Patients with cardioembolic stroke had higher mean left atrial volume indices (LAVi) (p \u3c 0.001), mean left ventricular mass indices (LVMi) (p \u3c 0.05) and mean left atrial diameters (LAD) (p \u3c 0.05). At LAVi of 29–33 ml/m2 , the risk of atherothrombotic stroke increased. The risk of cardioembolic stroke increased with LAVi of 34 ml/m2 and above. Conclusion: Left atrial volume indices may be linked to specific stroke phenotype. At mild increases in left atrial dimensions, the risks of atherosclerotic stroke are high, and probably reflect hypertension as the unifying mechanism. Further increases in left atrial dimensions shifts the risk towards cardioembolic stroke

Thymoquinone ameliorates acrylamide-induced reproductive toxicity in female rats: An experimental study

Background: Acrylamide (AA) is a carcinogenic compound that causes severe reproductive impairments and represents a high environmental risk factor. Thymoquinone (TQ) has a unique antioxidant activity and has been widely used as a protective agent against various types of toxicity. Objective: To evaluate the protective effects of TQ against AA-induced reproductive toxicity in female rats. Materials and Methods: In this experimental study, 40 female albino rats (120-150 gr, 8-10 wk) were sorted into 4 groups, (n = 10/each), vehicle group (received a daily oral administration of 0.5 ml saline [9%]); AA group (received a daily oral administration with freshly prepared AA, 20 mg/kg body weight) for 21 days which is less than the lethal dose LD50 of AA in rats (20 mg/kg body weight); AA+TQ group (received a daily oral administration of TQ, 10 mg/kg body weight) after AA intoxication for 21 days, and TQ group (received a daily oral administration of TQ only, 10 mg/kg body weight) for 21 consecutive days. Reproductive hormones, carcinogenic biomarkers, and oxidative stress markers were measured. The histological assessment showed the protective effect of TQ against AA-induced ovarian injury. Network pharmacology analysis and molecular docking approach were carried out to determine the binding affinity of TQ with cyclooxygenase 2. Results: TQ administration significantly enhanced the functional capacity of the ovary at hormones, oxidative biomarkers, and tumor markers at a significant level of p < 0.001. Besides, TQ protects the ovary of AA-treated rats from the severe degeneration effect. Conclusion: TQ showed a promising protective effect against AA-induced reproductive toxicity in female rats. Key words: Acrylamide, Thymoquinone, Rats, Oxidative stress, Cyclooxygenase 2, Inflammation

HPC as a Service: A naive model

Applications like Big Data, Machine Learning, Deep Learning and even other Engineering and Scientific research requires a lot of computing power; making High-Performance Computing (HPC) an important field. But access to Supercomputers is out of range from the majority. Nowadays Supercomputers are actually clusters of computers usually made-up of commodity hardware. Such clusters are called Beowulf Clusters. The history of which goes back to 1994 when NASA built a Supercomputer by creating a cluster of commodity hardware. In recent times a lot of effort has been done in making HPC Clusters of even single board computers (SBCs). Although the creation of clusters of commodity hardware is possible but is a cumbersome task. Moreover, the maintenance of such systems is also difficult and requires special expertise and time. The concept of cloud is to provide on-demand resources that can be services, platform or even infrastructure and this is done by sharing a big resource pool. Cloud computing has resolved problems like maintenance of hardware and requirement of having expertise in networking etc. An effort is made of bringing concepts from cloud computing to HPC in order to get benefits of cloud. The main target is to create a system which can develop a capability of providing computing power as a service which to further be referred to as Supercomputer as a service. A prototype was made using Raspberry Pi (RPi) 3B and 3B+ Single Board Computers. The reason for using RPi boards was increasing popularity of ARM processors in the field of HPCComment: 2019 8th International Conference on Information and Communication Technologies (ICICT), Karachi, Pakistan, 201

Recent trends in insect gut immunity

The gut is a crucial organ in insect defense against various pathogens and harmful substances in their environment and diet. Distinct insect gut compartments possess unique functionalities contributing to their physiological processes, including immunity. The insect gut’s cellular composition is vital for cellular and humoral immunity. The peritrophic membrane, mucus layer, lumen, microvilli, and various gut cells provide essential support for activating and regulating immune defense mechanisms. These components also secrete molecules and enzymes that are imperative in physiological activities. Additionally, the gut microbiota initiates various signaling pathways and produces vitamins and minerals that help maintain gut homeostasis. Distinct immune signaling pathways are activated within the gut when insects ingest pathogens or hazardous materials. The pathway induced depends on the infection or pathogen type; include immune deficiency (imd), Toll, JAK/STAT, Duox-ROS, and JNK/FOXO regulatory pathways. These pathways produce different antimicrobial peptides (AMPs) and maintain gut homeostasis. Furthermore, various signaling mechanisms within gut cells regulate insect gut recovery following infection. Although some questions regarding insect gut immunity in different species require additional study, this review provides insights into the insect gut’s structure and composition, commensal microorganism roles in Drosophila melanogaster and Tenebrio molitor life cycles, different signaling pathways involved in gut immune systems, and the insect gut post-infection recovery through various signaling mechanisms

Production and Evaluation of Nutritional Contents of Traditional Couscous from Sprouted Wheat Fortified with Glycine max (L.) merr (Soya Bean) and Cucurbita pepo (Pumpkin) Seeds

The study was carried to process, produce, and evaluate nutritional contents of traditional couscous from sprouted wheat (Triticum aestivum), fortified with Soya bean (Glycine max) and Pumpkin (Cucurbita pepo) seeds. The composite couscous blends were traditionally produced and compared with commercial couscous. The sprouted wheat couscous blends were blended in different ratios, they include; unprocessed (Raw wheat, 100), blend 1 (sprouted wheat mixed with soya bean and pumpkin seeds, 70:20:10), blend 2 (sprouted wheat mixed with soya bean, 60:40) and blend 3 (sprouted wheat mixed with pumpkin seeds, 60:40). Traditional wheat couscous blends were fed to experimental albino rats of wister strain weighing between (35 g and 45 g) for a period of 28 days. The nutritional and physiochemical analysis were determined using standard laboratory methods. The Statistical Package for Social Sciences (SPSS), version 20.0 was used to analyze the data collected which were expressed as means ± SE. One way analysis of variance (ANOVA) and Duncan’s multiple range tests were used to compare the means obtained after each experiment. Differences were considered significant at p < 0.05. Processing (Sprouting) decreases the levels of anti-nutrients, mineral elements and vitamins. Supplementation with soya bean and pumpkin seeds increased the nutritional composition of the sprouted wheat couscous blends. Results of chemical composition showed that blend 2, recorded high protein (29.95%), fat (8.95%) and low carbohydrate content (49.56%), followed by blend 1 and then blend 3, while commercial couscous crude protein, fat and carbohydrate were 12.53%, 1.42% and 75.10% respectively. There was improved level of in vitro protein digestibility at 1 hour (76.64% to 98.59%) and at 6 hours (96.80% to 99.33%). Results of in vivo studies showed that raw wheat couscous recorded protein quality when compared with spouted wheat couscous blends produced. The biological values of the composite couscous blends range from 95.04% to 95.73% and blend 2, recorded high net protein utilization (98.57%). In terms of sensory evaluation using hedonic method, blend 2 was most acceptable and differ significantly (p < 0.05) with other sprouted wheat couscous blends and commercial couscous. The cost of producing sprouted wheat couscous blends is cheaper than the commercial couscous. The study has therefore, revealed that with proper selection of locally available cereal, it is possible to produce nutritious complementary couscous blends that would be acceptable and nutritionally adequate to meet up the nutritional requirement for both children and adults. It also compares favourably with the commercial couscous in terms of nutrient contents

Influence of different formulation variables on the performance of transdermal drug delivery system containing tizanidine hydrochloride: in vitro and ex vivo evaluations

The present study was aimed at preparation of transdermal patches of tizanidine HCl, evaluation of the effect of polymers on in vitro release pattern of the drug, and the effect of permeation enhancers on the penetration of the drug through the rabbit skin. Various proportions of hydrophilic (HPMC) and hydrophobic (Eudragit L-100) polymers were used with PEG 400 as film-forming agent, and Span 20 or DMSO as permeation enhancer. The formulations were assessed for physicochemical characteristics and in vitro drug release studies using USP paddle over disc method in phosphate buffered saline (pH 7.4) at 32.0±1°C. On the basis of in vitro studies and physicochemical evaluations, S03-A and S04-A were selected at Eudragit : HPMC ratios of 8 : 2 and 7 : 3, respectively, for further ex vivo analysis. The effects of different concentrations of Span 20 and DMSO were evaluated on excised rabbit skin using Franz diffusion cell. Cumulative drug permeation, flux, permeability coefficient, target flux, and enhancement ratio were calculated and compared with the control formulations. Kinetic models and Tukey’s multiple comparison test were applied to evaluate the drug release patterns. Formulation SB03- PE containing Eudragit L-100:HPMC (7:3) with Span 20 (15% w/w) produced the highest enhancement in drug permeation, and followed zero order kinetic model with super case-II drug release mechanism

The Effect of Risk Management Reporting on Financial Efficiency

Purpose:The main objective of this study is to investigate the relationship between risk management reporting and financial efficiency.Design/Methodology/Approach:Risk management reporting is measured by a score indicating whether companies report on risk management in their annual reports. Efficiency is measured by the total asset turnover, which is the ratio of net revenue on total assets. This study applied a panel research design and data are collected from 138 companies listed on Bursa Malaysia in the product and service industries from 2018 to 2020.Findings:The result of this study shows that there is a significant relationship between risk management reporting and efficiency in Malaysia. The result of this study also shows between all available risk management reporting features in Malaysian companies' annual reports cyber risk, equity risk, inventory risk, market risk, and regulatory risk, have significant relationships with financial efficiency.Practical Implications:The outcomes of this study may be useful for companies that have not prepared risk management reporting to understand the impact on their financial efficiency. The findings may also provide important suggestions for the boards of directors of these companies considering the preparation of such a report.Originality/Value:The study contributes to the scientific literature by conducting an extensive analysis on the results of risk management reporting from the perspective of financial efficiency. The significant relationship between risk management reporting and efficiency provides evidence that risk management is an important determinant of financial efficiency and, ultimately, of improving company’s performance