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Search Results: 1 - 10 of 87690 matches for " Elnara I. Hasanova "
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Synthesis of Copolymers of Decylmethacrylate with Decene-1 as a Viscosity Additive  [PDF]
Elkhan U. Isakov, Jeyhun Sh. Hamidova, Elnara I. Hasanova
Open Journal of Yangtze Oil and Gas (OJOGas) , 2017, DOI: 10.4236/ojogas.2017.22006
Abstract: The article was dedicated to the copolymerization reaction of decylmethacrylate with decene-1. The copolymerizaion was realized with the participation of the inisiator the radical mechanism—izooil acid dinitrilyne. The learning of the polymerizaion reaction of decylmethacrylate with decene-1 shows that, it is possible to analyse the polymer connections having any molecular mass and content with the way of changing the monomers correlation and reaction temperature, that, it is possible to manage it knowing the regularities of the process. The effect of decylmethacrylate decene-1 copolymers to the viscosity-temperature properties has been learnt. As the result it has been showed that, using the joint polymers of decylmethacrylate—decene-1 in the content of the limpid oils as the thickener additive, it is possible to get the base oils with good viscosity-temperature properties.
The Effect of γ-Radiations on Dielectric Properties of Composite Materials PE + x vol% TlGaSe2  [PDF]
E. M. Gojayev, A. G. Hasanova
Open Journal of Inorganic Non-metallic Materials (OJINM) , 2015, DOI: 10.4236/ojinm.2015.54006
Abstract: The purpose of the paper is to study the effect of gamma irradiation on the temperature dependence of the dielectric constant \"\"and dielectric loss (tanδ) of composite materials PE + x vol% (0≤ x ≤ 10). Measurements are carried out with an alternating current at a frequency of 1 kHz using the measuring bridge E-20. Measurements are carried out at temperature range 300 - 450 K, irradiated at doses of 50, 100 and 150 kGy. It is revealed that in all irradiated samples with increasing volumetric filler content increase the dielectric characteristics of composites PE + x vol%. TlGaSe2. Temperature variation of the dielectric parameters, after gamma irradiation are the result of occurring in the electron-ion and polarization at the interface of the matrix polymer with filler of TlGaSe2.
Substandard vocabulary of youth in modern German
Hasanova F. O.
Sociosfera , 2012,
Abstract: This article describes the specifics substandard youth vocabulary in German. Youth slang – one of the component of the language development process, its replenishment and variety.
Photocatalytic Removal of Organic Pollutants from Industrial Wastewater Using TiO2 Catalyst  [PDF]
H. K. Khalilova, S. A. Hasanova, F. G. Aliyev
Journal of Environmental Protection (JEP) , 2018, DOI: 10.4236/jep.2018.96043
Abstract: Degradation of organic pollutants in wastewater was investigated by photocatalysis method using anatase modification of titanium-dioxide (TiO2) catalyst with different structures. Laboratory experiments were carried out with industrial wastewaters consisting of different contents of organic pollutants. Two types of TiO2 catalyst: TiO2 having a size near to nanoparticles (about 3 - 4 micron in size) and the nanostructured 15 nm sized TiO2 were used to find optimum conditions of photocatalytic degradation and removal of organic compounds from wastewater. This paper discusses the effect of various parameters on the degradation rate including the catalyst concentration, process duration as well as the catalytic effectiveness of the TiO2 particles’ size. In addition, the effect of UV and visible light sources on the degradation process was studied. The process performed with nanostructured TiO2 catalyst under visible light was very successfully allowing best degradation of organic compounds.
Analysis of Liquid Zone Control Valve Oscillation Problem in CANDU Reactors
Elnara Nasimi,Hossam A. Gabbar
Journal of Engineering , 2013, DOI: 10.1155/2013/450161
Abstract: This paper looks at the existing challenges with steady-state Liquid Zone control at some CANDU (CANada Deuterium Uranium) stations, where—contrary to expectations for equilibrium flow—Liquid Zone Control Valve oscillations have proven to be a chronic, unanticipated challenge. Currently, the exact causes of this behaviour are not fully understood, although it is confirmed that the Control Valve oscillations are not due to automatic power adjustment requests or zone level changes due to process leaks. This phenomenon was analysed based on a case study of one domestic nuclear power station to determine whether it could be attributed to inherent controller properties. Next, a proposal is made in an attempt to improve current performance with minimal changes to the existing system hardware and logic using conventional technologies. Finally, a proposal was made to consider Model Predictive Control-based technology to minimize the undesirable Control Valve oscillations at steady state based on the obtained simulation results and discussion of other available alternatives. 1. Introduction In CANDU nuclear power plants, reactor neutron power is measured and calibrated to the thermal power being produced. Operation of reactivity control devices, such as Liquid Zone light water-filled compartments and mechanical control rods, is used to reduce/eliminate power error. This paper describes efforts of a project that looked into a specific case of Liquid Zone (LZ) Control Valve (CV) problem where a controller performance resulted in undesirable CV oscillations leading to excessive wear and tear of the valve. In addition to equipment reliability, this impacts the overall flux control stability and presents challenges for operation, engineering, and maintenance at the plant. The focus of this project was to analyze the existing condition and propose alternatives to the existing control scheme in an attempt to resolve the existing condition and introduce a new intelligent controller based on modern advanced technologies. 1.1. Literature Review One of the main obstacles for the introduction of intelligent digital control for nuclear power plants appears to be the historical assumption that the old analogue controllers are more reliable, safer, and easier to maintain than the new digital programmable controllers. There is a perception among both the plant personnel as well as general public that the old analogue and electromechanical systems should remain the preferred method for implementing reactor control. This issue is quite prominent among certain specialists and
Test Site/In-Situ Data for Earth Observation in Case of Limited Field Data Access  [PDF]
Rustam B. Rustamov, Sabina N. Hasanova
Open Access Library Journal (OALib Journal) , 2014, DOI: 10.4236/oalib.1100552

Remote sensing (RS) is the method making possible of observing, recording and collecting of objects or features on the Earth from distant places. There is no direct contact with the investigated objects. It is reflecting radiation scattering from the Earth surface content information in the form of wavelengths in different range of spectrum. Main source of the information comes from satellites forming as space image. A further step of the analyses of space image and interpretation is required in order to extract the useful information from the image. The goal of a remote sensing method is to extract the information that is directly related to a management process creating opportunity efficiently adapted to the data ultimately interested purpose. It provides an impact in wide areas of time management as well as cost and financial resources coordination in the stages of development and implementation. A success of this achievement depends on a successful use of the multilevel data collected from space-borne and the field observation systems. It is necessary to optimize the infrastructure for the data acquisition and analyzing, effectively data processing and integration with further use for decision making. The option of optimization contains adequate instrumentation and better timing and coordination in information collecting and management. There is a limitation in some cases for the investigated area for the field data access. It makes necessary to embrace the need for the field data using indirect way for satisfaction of the space image processing needs. General approach is to use the test site data integrated into the space data for processing. The main purpose of the paper is to recommend how to cover existing gap and limitation in the field data. For this reason, the use of the Test Site/In situ data for fitting of the field data limitation in the space image processing oriented for the Earth observation is demonstrated in this paper. There is one more advantage of offered approach is to use the Test Site/In situ for multilevel data access. The use of a country area with features contenting the main land cover/land use needs for the field data required in the space image processing is recommended. The method of the data collection process with further integration into space data which is necessary part of the space information processing as an evidence of reliability of used technology is described in this paper. The result of offered approach demonstrates the philosophy of using of the Test Site/In situ data which is a vital problem in space data processing. Conclusion of suggested way of problem solving demonstrates exclusion not only lack of field data as well as creating the environment of multilevel data access which makes the increase accuracy of the data processing.

Intermittently “Pre-Excited” ECG after Accessory Pathway Ablation: Unsuccessful Procedure or a Complication?
Evgeny Mikhaylov,Elnara Voitkovskaya,Dmitry Lebedev
Case Reports in Cardiology , 2012, DOI: 10.1155/2012/289067
Abstract: A 52-year-old woman with previously unsuccessful posteroseptal pathway ablation using radiofrequency energy presented with intermittently occurring short PR followed by a wide QRS complex, and complaining of palpitations with characteristics different from previous history. During a second electrophysiological procedure no signs of preexcitation were found. Ventricular discharges with fusion with sinus beats were revealed, and catheter ablation of premature contractions originating from the proximity to previous accessory pathway was carried out.
Intermittently “Pre-Excited” ECG after Accessory Pathway Ablation: Unsuccessful Procedure or a Complication?
Evgeny Mikhaylov,Elnara Voitkovskaya,Dmitry Lebedev
Case Reports in Cardiology , 2012, DOI: 10.1155/2012/289067
Abstract: A 52-year-old woman with previously unsuccessful posteroseptal pathway ablation using radiofrequency energy presented with intermittently occurring short PR followed by a wide QRS complex, and complaining of palpitations with characteristics different from previous history. During a second electrophysiological procedure no signs of preexcitation were found. Ventricular discharges with fusion with sinus beats were revealed, and catheter ablation of premature contractions originating from the proximity to previous accessory pathway was carried out. 1. Introduction A 52-year-old woman suffering from palpitations was referred to the electrophysiology laboratory. Her rest ECG showed intermittent shortening of a PR interval followed by a wide QRS. The patient had previous radiofrequency (RF) modification of a posteroseptal accessory pathway (AP) one month ago (Figure 1(a)). Figure 1: (a) Surface ECGs of the patient. (a) The ECG before the first ablation. A short PR interval, a delta wave. and a widened QRS are clearly seen. Panels (b) and (c) show ECG pattern after the first ablation. (b) Twelve ECG leads show three beats: the first and the third are with the short PR and the wide QRS, while the second beat is normal. (c) The continuous recording of the lead I shows alternation of the PR interval and the QRS. 2. Case Presentation During the previous procedure the AP with ante- and retrograde conduction was diagnosed and ablated via the coronary sinus (CS) at the ostium of the middle cardiac vein. RF ablation was carried out using an open-irrigated 3.5?mm tip ablation catheter (30?W, 42°C). The ablation resulted in disappearance of retrograde conduction over the AP (as was shown by parahisian pacing) and a narrow QRS during the sinus rhythm; however fast (330?ms) and programmed atrial pacing showed preexcited QRS with a very long stimulus-R interval, and with prolonged AP-effective refractory period (ERP) (280?ms). Subsequent mappings and ablations from right and left chambers had no further effect. Since the AP was modified, and the reciprocating tachycardia was no more inducible, the procedure was stopped and considered as unsuccessful ablation. Five days later the patient complained of recurrent palpitations with “warm-up” and “cool-down” characteristics. The rest ECG showed sinus rhythm with intermittently appearing short PR intervals intervals being followed by wide QRS complexes suggestive of preexcitation (Figures 1(b) and 1(c)). The QRS complexes with the short PR interval were even wider than before the first AP ablation, and a slight difference in
Exploring TB-Related Knowledge, Attitude, Behaviour, and Practice among Migrant Workers in Tajikistan
Christopher Gilpin,Pierpaolo de Colombani,Sayohat Hasanova,Umrinisso Sirodjiddinova
Tuberculosis Research and Treatment , 2011, DOI: 10.1155/2011/548617
Abstract: A knowledge, attitude, behaviour, and practice survey was conducted among labour migrants in Tajikistan to elucidate key factors influencing access to tuberculosis diagnosis and care both in their labour destination country and at home. 509 labour migrants were interviewed in Khaton and Rasht Valley regions in Tajikistan using a standardised questionnaire. In addition, in-depth interviews were conducted among ten tuberculosis patients who had recently worked abroad. The study showed that migrants have increased vulnerability to tuberculosis due to the working and living conditions in the destination country and that access to health services is limited due to their legal status or the high cost of health services abroad. The average knowledge of migrants regarding tuberculosis is low and misconceptions are frequent. In Tajikistan, although tuberculosis drugs are usually provided free of charge, tuberculosis diagnosis and ancillary treatment are charged, thus creating a significant financial burden for patients and their families. Improving the access of labour migrants to affordable early diagnosis and treatment in both host countries and Tajikistan is a priority. 1. Introduction Despite improvements in welfare since 2003, Tajikistan remains a country with widespread poverty. At the end of 2007, 53% of the population was poor and 17% was extremely poor (i.e., below the food poverty line) [1]. 75% of the poor live in rural areas (as do 71% of the extreme poor). The International Organization for Migration (IOM) identified that more than 620,000 Tajik citizens are labour migrants, with one in every four households in Tajikistan reporting a family member involved in labour migration [2]. These people primarily migrate not only to Russian Federation, but also to neighbouring Kazakhstan, Kyrgyzstan, and Uzbekistan. A vast majority of these people are temporary migrants and do return. The latest estimation of tuberculosis (TB) incidence in Tajikistan is 206 cases per 100,000 population [3]. This incidence is the highest among the former Soviet Union countries and of the World Health Organization (WHO) European Region. 17% of the newly diagnosed and 62% of the previously treated TB cases in Tajikistan are estimated having multidrug resistance (MDR) TB, one of the highest rates in the world [4]. Tajik migrants are not only exposed to high levels of TB transmission in their home country and destination countries but also their act of migration and legal status often limit their access to health services. Health risk factors are often linked to the legal status
Nano-Coupling of Cephalosporin Antibiotics with Fe3O4 Nanoparticles: Trojan Horse Approach in Antimicrobial Chemotherapy of Infections Caused by Klebsiella spp.  [PDF]
Ulviyya Alimammad Hasanova, Mahammadali Ahmad Ramazanov, Abel Mammadali Maharramov, Qoncha Malik Eyvazova, Zohrab Adalet Agamaliyev, Yana Vacheslav Parfyonova, Sarvinaz Faiq Hajiyeva, Flora Vidadi Hajiyeva, Solmaz Bayram Veliyeva
Journal of Biomaterials and Nanobiotechnology (JBNB) , 2015, DOI: 10.4236/jbnb.2015.63021
Abstract: In the present study we had an aim to develop the methods of functionalizing the surface of magnetite nanoparticles with cefotaxime and ceftriaxone antibiotics. The quantitative analysis of the nanostructured cephalosporins was determined by Atom Absorbance Spectroscopy (AAS) and based on the Lambert-Beer law. The engineered nanostructures were tested on gram-negative microorganisms Klebsiella spp., of Enterobacteriaceae, and gram-positive bacteria Staphylococcus aureus, each having multi-drug resistance properties.
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