International Journal of Current Research and Review
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IJCRR - Vol 04 Issue 05, March, 2012

Pages: 130-138

Date of Publication: 30-Nov--0001


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DETERMINATION OF THE INFLUENCE OF CA AND MG ON NEUTRON WELL LOG RESPONSE WITH MONTE CARLO MCNP SIMULATION

Author: Mojtaba Vardian, Mohammad Javad Keikhai Farzaneh, Abdolrahman Vardian

Category: Healthcare

Abstract:This article is a study on simulating the influence of Ca and Mg on the behavior of neutron well
log in various rock types and arrangement of the curves in various rock types and investigating
the physical principle governed on this arrangement and also, determining the correct distance
of detectors from neutron source for preventing of overlapping of the curves and, indicating the
energy dependency of the neutrons in making the well logs curves and the placement of neutron detectors, to each other. The simulation code of neutral particles by Monte Carlo method (MCNP) can be used for imulating the response of nuclear devices worked based on production and / or detection of
neutral particles. In the present study, a model of thermal neutron probe has been simulated.
The results of this study indicate that for a ratio of near to far detectors counting, there is the
lowest porosity in a dolomite environment and the middle porosity is in calcite environment
and in a sandstone environment, the highest porosity. In other word, by drawing the calibration
curves of all three environments in a chart, the dolomite curve is located in the lowest place and
calcite curve is in the middle and sandstone curve is in the upper place of these two curves.
Physical principles governed on the behavior of calibration curves and also, the arrangement of placement of them in various environment to each other can associate with two components
including, the ability of an environment for moderating neutrons in various energies, the neutrons moderating speed in various environments. Also, the detector should be placed in proper distance from the source, depended on the neutron detected energy, to prevent the curve overlapping. It is the first time to study the simulation of the influence of Ca and Mg in the behavior of neutron well log in a Naturally Fractured Gas-Condensate Reservoir in Khuff Formation (Kangan and Upper Dalan Formation) which is a heterogeneous formation.

Keywords: MCNP, neutron well log behavior, Ca and Mg influence, Monte Carlo method.

Full Text:

INTRODUCTION
Regarding the costs and present limitations in determining the reservoir characteristics through well test, well log generally is used for determining the reservoir characteristics. In order to study the behavior of well log device, especially nuclear well log in various conditions, the simulation of nuclear well log response in various conditions and different environments is required. Such a simulation is not available widely, because in one hand it requires awareness about information of designing nuclear well log and on the other hand, enough skill for simulating them through nuclear simulation devices like nuclear calculating simulation code, MCNP. In this study, a general thermal compensated neutron well log has been simulated. This neuron well log has been simulated to have behavior like practical well logs and also determine the physical parameters governed on its behavior. Neutrons interact with the materials within and around the well and sensitive detectors count the scattered neutrons. Porous formation may contain water, oil, gas or combination of them. The neutron well log includes a neutron source and neutron detectors that shield against neutron source, then, the respond of the detector is dependent on the formation porosity and its saturation with the oil and gas. Then, determining of the porosity, requires the necessary measurement for determining of the characteristics of materials around the well and presence of the water or oil or gas within formation porosities. These measurements are usually based on the performance of measurement tool in various conditions of the well and also receiving information from another well log tool [1]. Calculation of interacting nuclear particles in relevant matters to nuclear well log is very difficult, since they work in a 3- dementional space and particles penetrate in different depths, and scatter towards the detectors [2]. The result obtained from this study, cause the better understanding of the behavior of neutron well log in various conditions of formation and well, and determine some considerable points in designing and making of a neutron well log. The neutron well log tool in this study has been simulated by calculating code of neutral particles of Mont-Carlo (MCNP) has published by Los Alamos laboratory. The history of the particles for solving equations of transferring particles has been simulated in a statistically space. Energy and the place of beginning of the neutrons movement from the source until the end of particle life time, for each particle, statistically is chosen from probability distribution function (PDF) to penetrating in to the formation and returning to detector [3].

MATERIALS AND METHODS A well log curve is a graph against depth, supplies parameters and measured physical quantities in a well and derived parameters from them in from of curve. The simulated thermal neutron well log tool includes 2 Helium thermal neutron detectors and a 16 curie neutron source Am-Be. The distance between center of each detector and source and also their volumes are among important parameters of designing. A block of Boron Carbide is located between near and far detectors to not count the neutrons moved from the near detector and passed out of that by far detector. Also, a block of water and Boron Carbide is located between neutron source and near detector to prevent reaching the emitted neutrons from source to near detector. The set of the detectors, source and attractive blocks is located in an aluminum chamber and all of them are located in an iron cover [4]. Hydrogen has the most effect in neutron well log because when neutrons interact to Hydrogen nucleus, due to co-weighted with neutron, loses the most amount of energy, and have high collision cross section, too. In well log, when a neutron source, bombard the formation around the well with high-energy neutrons and high counting rate, a neutron cloud mass in circular from surrounds the source that radius of this neutron cloud changes with changing of the type of formation and existing hydrogen in formation. By increasing hydrogen in formation, more neutrons moderate and thus the detectors count reduce [5] Neutron population especially thermal neutron population reduces by increasing distance from source. Usually counting in a neutron detector inversely is associated with the hydrogen amount of the formation. When the hydrogen content of the formation is high, more neutrons moderated and thus attract in formation, and when the hydrogen content of the formation is low, less neutrons attract to formation and thus, in relation to previous state, more neutrons reach to the detectors. The near detector count is more than the far detector count, and as result, near detector is better than far detector in statistical error. Instead, neutrons reached to near detector have more sensation to present elements in formation and for that reason, the far detector?s behavior is more independent to present elements in formation than near detector [6]. Because, the elements constituting the formation are light elements and thermal neutrons detect, the most effective neutrons interaction with formation is respectively, elastic scattering and neutron absorption. The action of losing neutron energy is called neutron moderation and an element that caused losing energy is called moderator [7]. With regard to that the calibration curve of the well log tool is done in the type of calcite in various amount of porosity, after moving a well log in to a well, measuring the near and far detector count and obtaining their ratio and placing them in the calibration curve, the amount of porosity that results is related to the porosity into calcite. Now, if the formation around the well is other than calcite, for obtaining the porosity in that environment there needs to have matrix correction curve, to be able to do the necessary correction on obtained porosity, and obtain porosity in new environment [8]. Matrix correction curve, is resulted from the ratio of counting in near detector to far detector, when the type of the simulated environment and its porosity changes. Now, to examine the physical principle governed on these curves, there should be referred to the near and far detectors counting in each case. Physical principle governed on the detectors counting can be classified in to two classes: A. The neutrons moderating ability of various energies in various environments. B. The neutrons moderating speed of various environments in various energies. RESULT AND DISCUSSION Because neutrons are neutral in electrical charge, then neutrons are not influenced by electron within atom and positive charge of atoms nucleus. Thus, neutrons pass from cloud of atom?s electron and directly interact to atoms nucleus. The quantity explained the rate of neutron interaction to nucleus, is called interaction cross section. Interaction of neutron to materials nucleus is in different forms, each of them have especial interaction cross section. Another parameter used widely in nuclear engineering equations is macroscopic interaction cross section and show with symbol . Macroscopic interaction cross section also can define for all kind of neutrons interaction like microscopic scattering interaction cross section ( s N s ). Fig. 1, shows the matrix correction curve of porosity in neutron well log simulated by calculating code of MCNP4C.

Now, to determining the physical principle governed on these curves, there should be referred to the far and near detectors counting in each cases. From the counting of the simulated detectors in neutron well logs by simulating code of MCNP4C, there is observed that the near detector counting in sandstone is more than in dolomite and in dolomite is more than in calcite. Counting far detectors in each 3 cases is also similar to the near detector. Now, by examining the principal governed on these detectors counting, the physics governed on matrix correction curves will be reach. The physical principles governed on the detectors counting can be classified in to two classes: A. The neutrons moderating ability of various energies in various environments. B. The neutrons moderating speed of various environments in various energies.

A. The neutron moderating ability of various energies in various environments: One of the important parameters in moderating neutron in an environment is interaction cross sections of neutron in various energies with constituting elements of that environment. With regard to simulating results of MCNP4C about near and far detectors counting in various rock types that, the near and far detectors counting in sandstone are more than dolomite and in dolomite is more than calcite. Then, it is expected that moderating power in calcite is more than dolomite and in dolomite is more than sandstone. Because of the light elements constitute calcite, dolomite and sandstone environment and also the thermal neutron is detected, then the most important neutron interaction includes elastic scattering interaction and absorption. With the principals governed on neutron interaction cross section in interaction with molecules, the elastic scattering collision cross section is calculated and set in table 1 for several energies. According to table 1, elastic scattering cross section in dolomite is more than calcite and in calcite is more than sandstone which is the inverse of detectors count. Thus, this result indicates that the elastic scattering interaction can?t be determinant of behavior neutron well log curves alone. In the other hand, neutron absorption cross section in low neutron energies is more important than elastic scattering cross section, and also neutron absorption cross section affect on both moderating process and neutron counting, so the neutron absorption cross section should be compared in various environment especially in low energies. With regard to chemical formulation of calcite (CaCO3) and dolomite (CaMg(CO3)2), and also the way of producing dolomite, occurred by replacement of Mg with Ca, the difference of calcite and dolomite is in presence of Mg in dolomite instead of Ca in calcite.

Thus, according to molecule neutron cross section law, the difference between calcite absorption cross section and dolomite absorption cross section in different energies can be determined with difference in Ca absorption cross section and Mg absorption cross section. According to fig. 2, the neutron absorption cross section of Ca, is more than neutron absorption cross section of Mg, and this lead to that in various energies, the neutron absorption cross section of calcite is more than neutron absorption cross section of dolomite.

So according to above, the valuable result is that in high energy neutrons, the scattering cross section in dolomite is more than calcite and in calcite is more than sandstone, and in low energies, absorption cross section in calcite is more than dolomite and in dolomite is more than sandstone. Therefore, the power of moderating in low energies in calcite is more than dolomite and in dolomite is more than sandstone, and in high energies, also the moderating power of dolomite is more than calcite and in calcite is more than sandstone. These are the main secret of neutron well log behavior. The very important obtained result from the above is that by changing the detection neutron energy, the matrix correction curves arrangement will change. Now, this subject is confirmed by simulating code of MCNP4C. In high detected neutron energy (fast and moderate energy), the detector counting in dolomite is less calcite and in calcite is less than in sandstone, because in this energy span elastic scattering interaction is more effective than absorption interaction, that it is admitted with above explanations (fig. 3). In low detected neutron energy (epithermal and thermal energy), detector counting in calcite is less than in dolomite and in dolomite less than sandstone (fig. 4).

A very important point exists in making neutron well logs is determination the precise place of the detectors (especially near detector) from neutron source. The reason of this is overlapping between obtained curves from neutron well log in certain distance between neutron source and the detector. One the very important results from simulating neutron well log by MCNP4C code is determining overlapping distance in neutron well log. In fact, in overlapping distance, the curves arrangement displaced. This point is also important that by reducing neutrons energy, the overlapping distance increases. B .The neutron moderating speed of various environments in various energies: Since that simulating results of neutron well log through MCNP4C code in calcite, dolomite and sandstone environment are very near to each other so, examining the effective phenomena in detectors counting is also difficult. Now, for more precise consideration, the dependency of the detector distance from the source to energy spans is stated. Since, the near detector is in the distance of about 40 cm from neutron source, so it is logical that the number of the thermal neutrons in approximate distance of 35-45cm is effective in the detector counting. It is also true about epithermal neutrons, so that the number of present epithermal neutrons in 30-40cm is effective in thermal neutrons detector counting. In the case of neutrons with moderate energy, this distance is about 15- 35cm. In the case of the fast neutrons this distance is about 5-30cm .So called distances in these energy spans, are called effective distance which influence on thermals neutrons detectors counting. Moderating speed is also, one of the effective parameters in the near and far detectors counting. Increasing the hydrogen content of each environment cause to increase the moderating speed, and thus neutrons absorb from less distance to their source. In this stage, because of examining the physical principle on the matrix correction curve, the hydrogen content of calcite, dolomite and sandstone has been considered equal and only the rock type changes. Here, moderating speed has been appeared so that, in each environment that attracting of neutrons is done faster, or from less distance to source, that environment has higher moderating speed. Now, the moderating speed of each environment is examined by MCNP4C. The MCNP4C result show that in high (fast and moderate) detected neutron energies, the moderating speed in calcite is more than in dolomite and in dolomite is more than sandstone (fig. 5, fig. 6).

 

There is concluded that in high energy span, the moderating speed in calcite is more than dolomite and in dolomite is more than sandstone but the moderating power in dolomite is more than calcite and in calcite is more than sandstone. One important result from this point is that if the neutron probe work according to detection of the neutron with energy near to source neutron energy, the probe curves change in some situation and the probe will be useless. The MCNP4C result show that in low (epithermal and thermal) detected neutron energies, the moderating speed in calcite is more than in dolomite and in dolomite is more than sandstone (fig. 7, fig. 8).

 

When the source energy is in energy span of 100Kev-2Mev, the results of simulating relative to counting the neutrons with moderate energy, epithermal and thermal in effective distances from the source in each energy span is also like to previous figs. in the same section, that due to being repeated, it is avoided of mentioning them. The cause of the curves is also similar to the previous states in the same section. when the source energy is in moderate energy span (1ev-100kev), the related results to counting neutrons with epithermal and thermal energy in effective distances from the source in each energy span and when the source energy is in epithermal energy span (0.1ev-1ev), the related results to counting thermal neutrons in effective distance from the source is examined in this energy span, It is proved that the results of these energy spans are also similar to previous states in the same section. The cause of the curves is also similar to the previous states in the same section. An important result from explanation in parts A and B can be concluded that the behavior of neutron well log in various environments is dependent on detected neutrons energy and the distance of the detectors from the source. Another very important point obtained in this section from the simulating by MCNP4C code for designing neutron well log, is the effect of neutron source energy and the effect of detected neutrons energy and distance dependency of the detector from the source, to energy of the detected neutrons and source neutrons, that have considerable effect on behavior of each curve alone, and on the curves behavior to each other. Both of explained factors in parts A and B about the near and far detectors counting are effective in neutron well log. Both of mentioned factors are adaptive to neutron counting in near and far detectors. Both cases of A and B that is simulated in this study, is simulated for the conditions that the matrix type is fixed and the formation porosity and as a result the fluid content of formation changes, to examine the behavior of neutron well log calibration curve which is the first and the most principal curve in neutron well log. That simulation results were like the obtained results in this study which due to being repeated, it is avoided of mentioning it.

References:

1. M. Duijvestijn, A. Hogenbirk, A. Koning, ”Sensitivity to Nuclear Data in Oil-Well Logging Application,” Journal of Nuclear Sience and Technology (August 2002) 1384-1387

2. K. Drzdowicz, E. Krynicka, J. Dabrowska, ”Themal Neutron Diffusion Cooling in Wet Quartz (Monte Carlo Simulation of the Palsed Neutron Experiments),” ELSEVIERApplied Radaition and Isotopes 65 (2007) 877-882

3. F. Brimeister, “MCNP-A General Monte Carlo N Particle Transport Code version 4C,” Los Alanos National laboratory

4. H. Scott, P. Wraight, J.Thornaton, J.Olesen, R.Hertzog, Mc. D. Keon, Das. T. Gupta, I. Albertin, ”Response of a Multidetector Pulsed Neutron Porosity Tool,” Transaction of the SPWLA 35th Annual Logging Symposium, Tulsa, Okiahoma, USA, June 19-22,1994, paper J

5. I. V. Serov, T. M. John, J. E. Hoogenboom, ”a New Effective Monte Carlo Midway Coupling Method in MCNP Applied to a Well Logging Problem,” ELSEVIER-Applied Radaition and Isotopes, Vol.49, No.12 (1998), 1737-1744

6. A. Mendoza, W. Preeg, C. Torresverdin:”Monte Carlo Modeling of Nuclear Measurements in Vertical and Horizontal Wells in the Presence of Mud-Filtrate Invasion and Salt Mixing” SPWLA 46th Annual Logging Symposium, New Orleans, Louisiana, USA, June 26-29,2005

7. A. Drabina, T. Zorski, U. Wo Ynicka, ”Correlation between Measurements and Monte-Carlo Calculations for the NNTE Logging-Tool,” The Henryk Niewodnicza?ski Institute of Nuclear Physics, Report No 1926/AP, 2003

8. D. D. Hua, R. J. Donahue, C. M. Celata, E. Greenspan, “Monte Carlo Simulation of Neutron Well-Logging in Granite and Sand to Detect Water and Trichloroethane (TCA),” Ernesst Orlando Lawrence Berkeley National Laboratory (LBNL-40866), January 1998

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One article from every issue is selected for the ‘Best Article Award’. Authors of selected ‘Best Article’ are rewarded with a certificate. IJCRR Editorial Board members select one ‘Best Article’ from the published issue based on originality, novelty, social usefulness of the work. The corresponding author of selected ‘Best Article Award’ is communicated and information of award is displayed on IJCRR’s website. Drop a mail to editor@ijcrr.com for more details.

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‘Emerging Researcher Award’ is instituted to encourage student researchers to publish their work in IJCRR. Student researchers, who intend to publish their research or review work in IJCRR as the first author are eligible to apply for this award. Editorial Board members decide on the selection of student researchers for the said award based on originality, novelty, and social applicability of the research work. Under this award selected student researcher is eligible for publication incentives. Drop a mail to editor@ijcrr.com for more details.


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A Study by Amr Y. Zakaria et al. entitled "Single Nucleotide Polymorphisms of ATP-Binding Cassette Gene(ABCC3 rs4793665) affect High Dose Methotrexate-Induced Nephrotoxicity in Children with Osteosarcoma" is awarded Best Article for Vol 13 issue 19
A Study by Kholis Ernawati et al. entitled "The Utilization of Mobile-Based Information Technology in the Management of Dengue Fever in the Community Year 2019-2020: Systematic Review" is awarded Best Article for Vol 13 issue 18
A Study by Bhat Asifa et al. entitled "Efficacy of Modified Carbapenem Inactivation Method for Carbapenemase Detection and Comparative Evaluation with Polymerase Chain Reaction for the Identification of Carbapenemase Producing Klebsiella pneumonia Isolates" is awarded Best Article for Vol 13 issue 17
A Study by Gupta R. et al. entitled "A Clinical Study of Paediatric Tracheostomy: Our Experience in a Tertiary Care Hospital in North India" is awarded Best Article for Vol 13 issue 16
A Study by Chandran Anand et al. entitled "A Prospective Study on Assessment of Quality of Life of Patients Receiving Sorafenib for Hepatocellular Carcinoma" is awarded Best article for Vol 13 issue 15
A Study by Rosa PS et al. entitled "Emotional State Due to the Covid – 19 Pandemic in People Residing in a Vulnerable Area in North Lima" is awarded Best Article for Vol 13 issue 14
A Study by Suvarna Sunder J et al. entitled "Endodontic Revascularization of Necrotic Permanent Anterior Tooth with Platelet Rich Fibrin, Platelet Rich Plasma, and Blood Clot - A Comparative Study" is awarded Best Article for Vol 13 issue 13
A Study by Mona Isam Eldin Osman et al. entitled "Psychological Impact and Risk Factors of Sexual Abuse on Sudanese Children in Khartoum State" is awarded Best Article for Vol 13 issue 12
A Study by Khaw Ming Sheng & Sathiapriya Ramiah entitled "Web Based Suicide Prevention Application for Patients Suffering from Depression" is awarded Best Article for Vol 13 issue 11
A Study by Purushottam S. G. et al. entitled "Development of Fenofibrate Solid Dispersions for the Plausible Aqueous Solubility Augmentation of this BCS Class-II Drug" is awarded Best article for Vol 13 issue 10
A Study by Kumar S. et al. entitled "A Study on Clinical Spectrum, Laboratory Profile, Complications and Outcome of Pediatric Scrub Typhus Patients Admitted to an Intensive Care Unit from a Tertiary Care Hospital from Eastern India" is awarded Best Article for Vol 13 issue 09
A Study by Mardhiah Kamaruddin et al. entitled "The Pattern of Creatinine Clearance in Gestational and Chronic Hypertension Women from the Third Trimester to 12 Weeks Postpartum" is awarded Best Article for Vol 13 issue 08
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A Study by Kumari PM et al. entitled "Study to Evaluate the Adverse Drug Reactions in a Tertiary Care Teaching Hospital in Tamilnadu - A Cross-Sectional Study" is awarded Best Article for Vol 13 issue 05
A Study by Anu et al. entitled "Effectiveness of Cytological Scoring Systems for Evaluation of Breast Lesion Cytology with its Histopathological Correlation" is awarded Best Article of Vol 13 issue 04
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A Study by Tarek Elwakil et al. entitled "Led Light Photobiomodulation Effect on Wound Healing Combined with Phenytoin in Mice Model" is awarded Best Article of Vol 13 issue 02
A Study by Mohita Ray et al. entitled "Accuracy of Intra-Operative Frozen Section Consultation of Gastrointestinal Biopsy Samples in Correlation with the Final Histopathological Diagnosis" is awarded Best Article for Vol 13 issue 01
A Study by Badritdinova MN et al. entitled "Peculiarities of a Pain in Patients with Ischemic Heart Disease in the Presence of Individual Combines of the Metabolic Syndrome" is awarded Best Article for Vol 12 issue 24
A Study by Sindhu Priya E S et al. entitled "Neuroprotective activity of Pyrazolone Derivatives Against Paraquat-induced Oxidative Stress and Locomotor Impairment in Drosophila melanogaster" is awarded Best Article for Vol 12 issue 23
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A Study by Ghaffar UB et al. entitled "Correlation between Height and Foot Length in Saudi Population in Majmaah, Saudi Arabia" is awarded Best Article for Vol 12 issue 21
A Study by situs slot and Siti Sarah Binti Maidin entitled "Sleep Well: Mobile Application to Address Sleeping Problems" is awarded Best Article for Vol 12 issue 20
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A Study by Sonali Banerjee and Mary Mathews N. entitled "Exploring Quality of Life and Perceived Experiences Among Couples Undergoing Fertility Treatment in Western India: A Mixed Methodology" is awarded Best Article for Vol 12 issue 18
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A Study by Juna Byun et al. entitled "Study on Difference in Coronavirus-19 Related Anxiety between Face-to-face and Non-face-to-face Classes among University Students in South Korea" is awarded Best Article for Vol 12 issue 16
A Study by Sudha Ramachandra & Vinay Chavan entitled "Enhanced-Hybrid-Age Layered Population Structure (E-Hybrid-ALPS): A Genetic Algorithm with Adaptive Crossover for Molecular Docking Studies of Drug Discovery Process" is awarded Best article for Vol 12 issue 15
A Study by Varsha M. Shindhe et al. entitled "A Study on Effect of Smokeless Tobacco on Pulmonary Function Tests in Class IV Workers of USM-KLE (Universiti Sains Malaysia-Karnataka Lingayat Education Society) International Medical Programme, Belagavi" is awarded Best article of Vol 12 issue 14, July 2020
A study by Amruta Choudhary et al. entitled "Family Planning Knowledge, Attitude and Practice Among Women of Reproductive Age from Rural Area of Central India" is awarded Best Article for special issue "Modern Therapeutics Applications"
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A Study by K. Krupashree et. al. entitled "Protective Effects of Picrorhizakurroa Against Fumonisin B1 Induced Hepatotoxicity in Mice" is awarded best article for issue Vol 10 issue 20
A study by Mithun K.P. et al "Larvicidal Activity of Crude Solanum Nigrum Leaf and Berries Extract Against Dengue Vector-Aedesaegypti" is awarded Best Article for Vol 10 issue 14 of IJCRR
A study by Asha Menon "Women in Child Care and Early Education: Truly Nontraditional Work" is awarded Best Article for Vol 10 issue 13
A study by Deep J. M. "Prevalence of Molar-Incisor Hypomineralization in 7-13 Years Old Children of Biratnagar, Nepal: A Cross Sectional Study" is awarded Best Article for Vol 10 issue 11 of IJCRR
A review by Chitra et al to analyse relation between Obesity and Type 2 diabetes is awarded 'Best Article' for Vol 10 issue 10 by IJCRR. 
A study by Karanpreet et al "Pregnancy Induced Hypertension: A Study on Its Multisystem Involvement" is given Best Paper Award for Vol 10 issue 09
Late to bed everyday? You may die early, get depression situs slot
Egg a day tied to lower risk of heart disease situs slot
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A Study by Ese Anibor et al. "Evaluation of Temporomandibular Joint Disorders Among Delta State University Students in Abraka, Nigeria" from Vol 13 issue 16 received Emerging Researcher Award


A Study by Alkhansa Mahmoud et al. entitled "mRNA Expression of Somatostatin Receptors (1-5) in MCF7 and MDA-MB231 Breast Cancer Cells" from Vol 13 issue 06 received Emerging Researcher Award


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International Journal of Current Research and Review (IJCRR) provides platform for researchers to publish and discuss their original research and review work. IJCRR can not be held responsible for views, opinions and written statements of researchers published in this journal

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