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Demulsification of Emulsified Crude Oil Using Local Demulsifier And Urea

¹Ejikeme, Patrick C. N., ¹Ejikeme, Ebere M,. ²Okechukwu, Judith O.

¹Department of Chemical Engineerng, Enugu State University of Science and Technology, Enugu, Nigeria.

²Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, Nigeria

ebemoca@yahoo.com, pykecyril@yahoo.com, judith4life45@yahoo.com

Abstract: This work studied the demulsification of emulsified crude oil using locally formulated demulsifier and commercial demulsifer (Urea). Water in oil emulsion was prepared by mixing crude oil with synthetic brine of 2.4% salinity in the ratio of 1:1v/v. Effect of process factors; time, dosage of demulsifier and temperature on the chemical demulsification process was studied. FTIR analysis of the raw, emulsified and demulsified crude oils as well as the formulated demulsifier was studied. It was observed that these process factors had effect on the water separated. Increase in the temperature and time increased the amount of water separated after demulsification. Increase in dosage of formulated demulsifier increased the amount of water separated at lower time interval, but the separated water was constant at higher time interval. Use of solvent as a carrier was seen not to have effect on the water separated. FTIR of the formulated demulsifier confirmed it as anionic in nature, while urea was cationic in nature. It was observed that the formulated demulsifier was more effective than urea in water separation. 63% of water was separated using formulated demulsifier, while 35% of water was separated using urea. The basic sediment and water (BS & W) contents of the crude oil demulsified with both demulsifiers were lower than that on the raw crude oil.

[Ejikeme, Patrick C. N., Ejikeme, Ebere M,. Okechukwu, Judith O. Demulsification of Emulsified Crude Oil Using Local Demulsifier And Urea. Researcher 2019;11(7):1-8]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 1. doi:10.7537/marsrsj110719.01.

Keywords: BS & W, Crude oil, Demulsifier, Emulsification, FTIR, Urea

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Role of Interventional Radiology in Provision of Venous Access

Khaled Ahmad Ibrahim Oweda, Prof. Dr. Amr Mahmoud Zayed. Dr. Hussein Montaser Roshdy

Radiodiagnosis Department, Faculty of Medicine, Alazhar University, Egypt

ewedakhaled@gmail.com

Abstract: The aim of this study was to illustrate different types of vascular access devices, their indications & associated complications as well as to highlight the role of interventional radiologists & image guided techniques in safe placement of these devices. Methods: forty patients were included in our study with an age range 15 – 62years, divided into 3 groups (oncology, dialysis and critical care groups), they underwent full history taking, clinical examination and laboratory tests including complete blood count, serum creatinine & coagulation profiles. Ultrasound & color Doppler were performed for all cases & contrast venography to some cases to select access route. Image guided insertion of vascular access devices was performed through traditional (jugular, subclavian & basilic) & non-traditional (brachiocephalic, SVC collateral, hepatic & internal mammary) routes. 39 long term (ports, dialysis catheters & Hickman) & 1 intermediate term (PICC) devices were used. Patients were followed up clinically & radiologically (by ultrasound & X-ray) for 3months, all complications were reported. Results: technical success was achieved in all cases, 37 cases from single puncture. Among our cases 2 patients (5%) had intra-operative minor complications (arterial puncture & puncture related hematoma), 4 patients (10%) suffered catheter related infections; 2 were removed & the other 2 were exchanged, 2 devices (5%) became non-functioning due to catheter thrombosis & fibrin sheath III formation and were resolved by balloon & catheter exchange, 1 device was accidentally dislodged. Among all, 3 patients were lost to follow up. Conclusion: Radiologists are ideally suited to provide vascular access services to children & adults because of inherent safety advantages and higher success from using image-guided techniques. The choice of the VAD primarily depends on the indication for its insertion & duration of need.

[Khaled Ahmad Ibrahim Oweda,  Amr Mahmoud Zayed. Hussein Montaser Roshdy. Role of Interventional Radiology in Provision of Venous Access. Researcher 2019;11(7):9-23]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 2. doi:10.7537/marsrsj110719.02.

Key Words: Ultrasound guided -implantable ports - vascular access –transhepatic

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Technical aspects of ultrasound-guided fine needle biopsy of thyroid nodules

Mohamed Abdellkader Abdelkader Alrashidy¹, Prof. Dr. Amr Mahmoud zayed¹, Prof. Dr. Ibrahim Hassan Yousef², Dr. Mohamed Salah El-Din Abdelbaky¹

¹Radiodiagnosis Department, Faculty of Medicine, Al-Azhar University, Egypt

²Pathology Department, Faculty of Medicine, Al-Azhar University, Egypt

Mohamed.ahrashidy2020@gmail.vom

Abstract: Fine needle biopsy of thyroid nodule is minimally invasive, simple, reliable and inexpensive procedure, so it's considered the procedure of choice in preoperative management of thyroid nodules. Using the ultrasound (US) as an imaging guidance for fine needle biopsy increases the samples adequacy by accurately targeting the nodule and continuously monitoring the needle's tip inside the nodule during the sampling procedure. In our study we evaluate the technical aspects of US-guided Fine needle biopsy of thyroid nodules using single needle pass and the patients complications related to the procedure.

[Mohamed Abdellkader Abdelkader Alrashidy, Amr Mahmoud zayed, Ibrahim Hassan Yousef, Mohamed Salah El-Din Abdelbaky. Technical aspects of ultrasound-guided fine needle biopsy of thyroid nodules. Researcher 2019;11(7):24-40]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 3. doi:10.7537/marsrsj110719.03.

Keywords: Technical; aspect; ultrasound-guided; fine; needle; biopsy; thyroid nodules

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The Role of CT-Scan Guided Transforaminal Epidural Steroid Injection in Lumbar Radiculopathy

Prof. Dr. Henaz Farouk Khaled ¹, Prof. Dr. Hasham Mahmoud Ahmed ², Ass. Prof. Dr. Eman Ahmed Tawfik ¹, Hajed Hani Muhamed Antabli ¹

¹ Physical Medicine, Rheumatology and Rehabilitation, Faculty of Medicine, Ain Shams University, Egypt

² Radiology Department, Faculty of Medicine, Ain Shams University, Egypt

hajedalantably@gmail.com

Abstract: Background: Lumbar radiculopathy is a common clinical condition. An epidemiological review noted lifetime prevalence estimates ranging from 12.2% to 43% and annual prevalence ranging from 2.2% to 34%. Although the natural history is generally favorable, patients with radicular pain tend to have poorer outcomes, consume more health care resources, and have greater disability than patients with purely axial back pain. Objectives: The objective of this study was to assess the immediate and short-term effects of transforaminal epidural steroid injections in patients with lumbosacral radiculopathy. Patients and Methods: This study was conducted on 30 patients with lumbosacral radiculopathy. All patients were subjected to transforaminal epidural steroid injection and were followed up for 3 months. They were assessed clinically and functionally pre-injection and twice post-injection (1 and half month and 3-month post-injection). Results: A statistically significant difference regarding femoral nerve stretch test (p-value <0.05) and highly statistically significant difference regarding central LBP, SIJ pain, tingling & numbness; SLR; and CSLR between 1^st visit post-injection and pre-injection visit (p-value <0.01), while there was no statistically significant difference regarding SIJ. Statistically significant difference regarding sacroiliac pain (p-value <0.05) and highly statistically significant difference regarding central LBP, tingling & numbness; SLR; and CSLR between 2^nd visit post-injection and pre-injection visit (p-value <0.01), while there was no statistically significant difference as regards femoral nerve stretch test and SIJ test. Conclusion: Steroid injection treatment resulted in significant improvement of pain intensity and reduction in functional impairment after one month of treatment and after a three month follow up from baseline. Steroid injection had the highest functional improvement that was significantly associated with pain control, especially in patients with shorter disease duration.

[Henaz Farouk Khaled, Hasham Mahmoud Ahmed, Eman Ahmed Tawfik, Hajed Hani Muhamed Antabli. The Role of CT-Scan Guided Transforaminal Epidural Steroid Injection in Lumbar Radiculopathy. Researcher 2019;11(7):41-50]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 4. doi:10.7537/marsrsj110719.04.

Keywords: CT-Scan Guided, Transforaminal Epidural Steroid Injection, Lumbar Radiculopathy

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Nano antibodies (Single-domain antibodies) in Arabian camels (Single hump) milk, diagnostic, therapeutic and medical functions (Review)

Hussien Abd El-Fattah Osman¹, Mona S. Zaki¹, Sami I Shalaby², Olfat M. Fawzi³

¹ Hydrobiology Department, National Research Centre, Dokki, Cairo, Egypt

²Animal Reproduction Department, National Research Centre, Egypt

³Biochemistry Department, National Research Centre, Dokki, Giza Egypt

drmonazaki@yahoo.con

Abstract: Nano-Antibodies or "nAb" are single-domain VHH antibodies derived from camelidae (camels, llamas, alpacas, etc.). Compared with conventional monoclonal and polyclonal antibodies, nAb antibodies possess many superior properties, including small size (~15kd), high affinity (frequently nanomolar range), high specificity, and unsurpassed stability. Each nAb is available in the following formats: stable purified protein, fluorescent dye conjugates, and conjugates to various matrices (including agarose resin and magnetic beads). VHHs, which are the smallest fully active antibody fragments, can be a “coming of age” in medicine and biotechnology. Their unique features – small size, high affinity, ability to bind epitopes inaccessible for regular antibodies or their fragments, amazing stability, and feasibility of expression – suggest that they may be considered as a new magic bullet of medicine. In addition, they may be employed in biotechnology, therapy, imaging and laboratory practice.

[Hussien Abd El-Fattah Osman, Mona S. Zaki, Sami I Shalaby, Olfat M. Fawzi. Nano antibodies (Single-domain antibodies) in Arabian camels (Single hump) milk, diagnostic, therapeutic and medical functions (Review). Researcher 2019;11(7):51-65]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 5. doi:10.7537/marsrsj110719.05.

Key words: camels- milk- conventional antibodies -nano-antibodies- single-domain VHH - unique features

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Management of Medio-lateral Instability after Primary Total Knee Replacement

Tharwat Mohamed Abdel-Rahman, Abdel-Hamed Abdel-Aziz Atallah, Mohamed Ahmed Khalil

Orthopedics department, faculty of medicine (for Girls), Al-Azhar University, Cairo, Egypt.

mohamed1ahmedkhalil@gmail.com

Abstract: Background: Instability is defined as the abnormal and excessive displacement of the articular elements that leads to clinical failure of the arthroplasty and is one of the most common causes of aseptic failure following total knee replacement. Instability may be early or late, and may involve global instability or anteroposterior (flexion) instability or mediolateral (extension) instability. Objective: The different ways and tools needed to evaluate mediolateral instability after primary total knee replacement are covered as well as possible aetiologies of mediolateral unstable replaced knee along with treatment options and management for mediolateral unstable knee prothesis and their results. Method: Systematic review comparing 4 studies of total 304 studies concerning management of mediolateral instability after primary total knee replacement. Outcomes from included trials will be combined using the systematic review manager software and manually screened for eligibility to be included. PRISMA (preferred reporting items for Systematic reviews and Meta-Analyses) flowchart will be produced based on the search results. Results: In this systematic review we used to calculate the mean preoperative and postoperative IKS, FKS, HSS and ROM among 114 patients with follow-up varying from 2-7 years to find satisfactory knee scores after revision using the appropriate prosthesis comparing IKS score vary preoperatively from (42-45) and postoperatively to (77-87), HSS score vary preoperatively from (34-53) and postoperatively to (83-89) and for FKS score vary preoperatively from (21.5-45) and postoperatively to ( 51-84) with ROM preoperatively from (79-109) and postoperatively to ( 111-122). Conclusion: A revision TKA with or without a more con­strained prosthesis regardless of the implant types would be a definite solution to TKA instability, but the solution according to the causes is very effective and seems to have a chance of avoidance of unnecessary over-constrained implant selection in a revision surgery for an unstable TKA.

[Tharwat Mohamed Abdel-Rahman, Abdel-Hamed Abdel-Aziz Atallah, Mohamed Ahmed Khalil. Management of Medio-lateral Instability after Primary Total Knee Replacement. Researcher 2019;11(7):66-71]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 6. doi:10.7537/marsrsj110719.06.

Keywords: Total knee arthroplasty-Instability after total knee arthroplasty-Revision after total knee arthroplasty–TKA-Ligament balancing Mediolateral instability.

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Assessing characteristics of Online Education and comparing of Traditional Education

Sharareh Khodamoradi ¹ and Mohammad Abedi²

¹ Department of Agricultural Extension Education, Science and Research Branch, Islamic Azad University, Tehran, Iran

²Department of Agricultural Management, Islamic Azad University, Qaemshahr Branch, Iran

*Corresponding author: abedi114@yahoo.com

Abstract: Distance education dictates changes in behavior for both the teacher and the learner. The successful student develops persistence and skills in self-directing work. The successful distance education teacher becomes conversant with new technology and develops new instructional styles, moving from creating instruction to managing resources and students and disseminating views. Administrative and faculty support for distance education are critical to the success of this instructional method. Administrators should take note that the implementation of a distance education program may allow access to a greater number of students. However, the time and work associated with teaching at a distance exceeds the normal requirements of campus-based instruction. Students in distance education settings perform as well or better on assignments, class activities, and exams when compared to campus-based students. Nevertheless, students must maintain persistence and a clear focus to succeed in a distance learning situation. Self-direction, a passion for learning, and strong individual responsibility are important influences on achievement. There are indications that distance education works best for more mature, motivated, well-organized, and already accomplished learners.

[Sharareh Khodamoradi and Mohammad Abedi. Assessing characteristics of Online Education and comparing of Traditional Education. Researcher 2019;11(7):72-77]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 7. doi:10.7537/marsrsj110719.07.

Keywords: Online Education, Traditional Education

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Interoperable Semantic Application Design using Distributed Data Models

A. Kavidha ¹, Dr. A. Saradha²

¹Assistant Professor (senior)

Institute of Road and Transport Technology, Erode, Tamilnadu – 638316.

²Associate Professor

Institute of Road and Transport Technology, Erode, Tamilnadu – 638316.

kavitha.irtt@gmail.com

Abstract: The paper proposes a framework for building intelligent interoperable application by collaborating among distributed heterogeneous data models using semantic web technologies. The objective of the application development using semantic technologies is to provide a better inference for the query against dynamic collection of information in collaborating data models. Semantic web technologies have the potential to build intelligent interoperable application using multiple heterogeneous data models as it uses ontology for knowledge representation. Semantic technology based application also provides the key benefits like improved data sharing, higher level of abstraction, best query response, independent maintenance of the model. Semantic agent in the proposed framework transforms the user queries semantically for possible integration between heterogeneous data models to drive intelligent inference. In order to reuse the distributed ontologies in collaborative knowledge models, they are transformed to one another to elevate the semantic inconsistency among concepts, attributes and individuals in the contributing ontologies. This paper also proposes a mapping algorithm for automatic mapping of contributing ontologies in various levels. The proposed framework and algorithm is tested for a case study for building employment exchange system with heterogeneous data models. In the proposed case study, the collaborating data models are mapped for structure, syntax and semantics in different granularity level to reconcile the conflicts and mismatches exists among them and the intelligent application is built using the framework to provide best query response.

[A. Kavidha, Dr. A. Saradh. Interoperable Semantic Application Design using Distributed Data Models. Researcher 2019;11(7):78-86]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 8. doi:10.7537/marsrsj110719.08.

Keywords: Interoperable Knowledgebase, distributed Knowledge models, ontology integration, semantic integration, collaboration of knowledge models, ontology mapping, semantic web application

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Comparative Research of Self-Concept Characteristics in Students of Different Fields in Roodsar Payam- Nour University

Alireza Nezamdoust Malfejani

Last Year of PhD Student in Psychology from Psychology and Social Science College in Baku State University, Baku, Azerbaijan (B.D.U)

Abstract: The aim of this research is survey about self-concept characteristics in a student sample. For this reason, 214 students in different fields of Payam Nour University in Roodsar center have been surveyed by accidental sampling order. Research tools were Rogers self-concept questionnaire, general health questionnaire (GHQ-28) and Hermens development motivation questionnaire. For data and information analyzing, one used regression, variance analysis and t-test statistical method. Results showed that variances of educational field, gender, mental health and development motivation, all had effect on students self-concept, but the amount of effect of mental health and development motivation on student`s self-concept were more than other variances and this effect was meaningful on self-concept. (Mental health t= 3/212, p= 0/002). And (development motivation t= -10/430, p=0/000). In comparison of students self-concept in different fields, there was not a meaningful difference between Fields` average (p=0/080, F= 1/605). Although, there was not a meaningful difference between self-concept in students of basic Fields and humanities (d F = 188, t= -0/774, p= 0/440) and in comparison of self-concept between girl and boy students, there were no meaningful differences. And the last result shows that, students who have positive self-concept have more development motivation and better mental health. (d F= 212, t= -20/90, P= 0/000) and (d F= 172/98, t= 16/01, P= 0/000). By regarding results, it is necessary to pay more attention, mental problems in students and factors that affect their self-concept in university environment and it is better to do psychological evaluation and give consulting services for increment of level of psyche health and self-concept strength of students.

[Nezamdoust Malfejani A. Comparative research of self-concept characteristics in students of different Fields in Roodsar payame- nore University. Researcher 2019;11(7):87-92]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 9. doi:10.7537/marsrsj110719.09.

Keywords: self-concept, mental health, development motivation

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