bluuebunny/crossref_metadata_2025 huggingface dataset:
THE ANALYSIS CAUSE OF CASTING REPAIR WORK WITH PARETO CHART IN PROJECT X
Authors: Irfanto Ryobi
Published: April 2022

Construction projects are inseparable from their unique management. The unique management of construction projects makes it difficult to maintain their quality. One of the tools to measure quality in project management is the Pareto chart. Pareto chart is a statistical technique that is usually used for decision making based on the frequency of events compared to the causes of events. This research was conducted to analyze the causes of repair work on project X by using Pareto chart. The conceptual framework used in this study is based on two approaches, namely literature and field observations. The main literature for analysis is the Pareto chart then field data collection on each component first which is then categorized based on the type of work. After the data is categorized, a Pareto chart will be made from the data. The processing results obtained two dominant types of errors in the casting work, namely cracks and unevenness of the casting results. Cracks and unevenness of the casting results can be overcome by the chipping method then followed by grouting if necessary. The chipping method is used to repair porous concrete or flatten the casting if it swells, and the grouting method to fill cracks and chipping results with a mixture of cement and water until the surface becomes flat and the casting work results are better.
OPTIMIZATION STUDY OF GATE OPERATION RULE IN CIAWI DAM AS FLOOD CONTROL FUNCTION
Authors: Mahlil Mahlil , Sudinda Teddy Wartono
Published: April 2022

The purpose of this research is to find out the effectiveness of operating gate on the design of flood routing and provide an alternative outlet operation gate for maximum flood reduction. The location of the research area is the Ciawi Dam watershed with an area of ​​88.50 km2, a river length of ±16.70 km and an average river slope of 5.60%. This research data is based on climatological data, low discharge data, flood hydrograph, and dam and reservoir engineering data. In addition, there are supporting data to perform calculations and analyzes, such as flood discharge data, elevation curve – reservoir volume and layout of the dam and its complementary buildings, existing operating patterns, and regional socio-economic data studies. The method used is to calculate flood routing of the capital flow curve at the outlet operation gate. The simulation is carried out using a design flood hydrograph so that optimal flood reduction can be determined by the outlet operation gate. Based on the results of the maximum reduction in the design of the reservoir operation dam design without utilizing the conduit gate as a flood control function, the researchers optimized the door operation pattern to increase the flood reduction capacity (optimization) of the Ciawi Dam. The result of the calculation and analysis is that the flood return period (Q25 th) is able to reduce flooding by 54.64%; flood return period (Q50 yr.) is able to reduce flooding by 45.21%; flood return period (Q100 yr.) is able to reduce flooding by 38.06%; flood return period (Q500 yr.) is able to reduce flooding by 38.50%; and the flood return period (Q1000 yr.) was able to reduce flooding by 33.22%. So, it can be concluded that by utilizing the bottom outlet gate as a flood discharge regulation, the benefits obtained are 42.27% (at Q 25 yrs.) from the pattern of dam operation without gate regulation.
ANALYSIS OF THE LIQUEFACTION POTENTIAL OF PALU CITY USING QUALITATIVE AND QAUNTITATIVE METHODS
Authors: Pratama Rizky Johan Adi , Krisnamurti  , Wicaksono Luthfi Amri
Published: April 2022

In 2018, there was an earthquake measuring 7.7 on the Richter scale that shook the city of Palu, Central Sulawesi. The epicenter was 26 km north of Donggala Regency and 80 km northwest of Palu City. The earthquake caused the land of the location to become saturated and experience liquefaction. This research aims to find out how much potential liquefaction will occur in an area using qualitative methods and quantitative methods. After conducting qualitative analysis consisting of historical, geological, and soil composition criteria the results are still potential liquefaction, with these results, the research continued with quantitative analysis with Simplified Seed method by Idriss Boulanger (2010) with data on 3 boring log samples in the area. Based on the results reviewed using qualitative analysis, the data of 3 boring samples has the potential to occur liquefaction, so it continues with quantitative analysis to support the results of qualitative analysis. From the results of calculations using the largest magnitude value ever occurred, which is 7.7 SR with the result of Safety Factor value < 1. At points SB01, SB02, and SB03 have Safety Factor values of 0.184 – 0.992.
Results of post-infarction left ventricular aneurysms surgical planning using magnetic resonance imaging and three-dimensional modeling
Authors: Kushnarev S. V. , Zheleznyak I. S. , Kravchuk V. N. , Rud S. D. , Shirshin A. V. , Menkov I. A.
Published: April 2022

Aim. To evaluate the results of surgical intervention planning using three-dimensional models based on magnetic resonance imaging in patients with postinfarction left ventricular aneurysms.

Material and Methods. Two groups of patients with postinfarction left ventricular aneurysm (PLVA) were included in the study, totaling 41 patients. The first (experimental) group included 17 patients diagnosed with PLVA by magnetic resonance imaging (MRI), and surgical intervention planning was performed using a 3D model of the heart. The control group comprised 24 patients in whom PLVA was diagnosed by echocardiography (TTE) or ventriculography, and surgical intervention planning was performed using traditional two-dimensional slice images.

Results. Comparison of full perfusion under cardiopulmonary bypass (CPB) showed statistically significant differences between the groups: this parameter was 60 [56; 68] min in group 1 vs. 71 [61; 84] min in group 2, which was significantly higher (p = 0.043). There were no significant differences in total operation time (280 [265; 320] min in group 1 vs. 263 [248; 283] min in group 2, p = 0.055), overall CPB time (93 [86; 109] min in group 1 vs. 104 [83; 109] min in group 2, p = 0.653), and partial CPB time (31 [26; 39] min in group 1 vs. 27 [21; 32] min in group 2, p = 0.127).

Conclusion. The use of 3D models to support surgeons for PLVA correction makes it possible to determine the type of reconstructive surgery, practice the main stages of the upcoming intervention, and reduce the time of full perfusion under CPB during its implementation.
Comparative retrospective analysis of the results of open femoral-popliteal bypass grafting and endovascular stenting with an interwoven biomimetic stent in patients with prolonged occlusions of the arteries in the femoropopliteal segment
Authors: Gostev A. A. , Osipova O. S. , Bugurov S. V. , Saaya Sh. B. , Rabtsun A. A. , Cheban A. V. , Ignatenko P. V. , Karpenko A. A.
Published: April 2022

Introduction. Autovenous graft is considered the gold standard for prolonged occlusive lesions of the arteries in the femoralpopliteal segment. However, the vein is not always anatomically suitable for bypass grafting; it may have been previously used in previous operations, for example, in coronary artery bypass grafting. Open surgery is always more traumatic than endovascular surgery. Conventional nitinol stents show unsatisfactory results in the femoral-popliteal position due to the high percentage of reocclusions associated with their breakage during physiological movements in the leg joints. The modified method of making interwoven nitinol stents allows improving their biomimetic properties and reducing the percentage of breakages and, accordingly, reocclusions.

Material and Methods. There was a retrospective analysis of 437 patients with prolonged atherosclerotic occlusive lesion in the femoropopliteal segment (> 20 cm). There were two groups: a group of bypass surgery and a group of endovascular intervention. The pseudo-randomization method of propensity score matching was used to align the groups according to various criteria.

Results. Primary and secondary patency rates for one- and two-year follow up were comparable between the two groups. A subgroup analysis of above-knee intervention showed that a two-year secondary patency rate was significantly higher in the endovascular intervention group than in the bypass group (90.9% vs. 77.5%, p = 0.048). The subgroup analysis of interventions below the knee joint showed that the patency rates at two years of primary and primary-assisted patency were significantly higher in the endovascular intervention group than in the bypass group with an artificial expanded polytetrafluoroethylene (ePTFE) graft (66.7% versus 42.4%, p = 0.046 and 76.7% versus 45.5%, p = 0.011, respectively). The autovenous graft showed better results for primary patency compared with the endovascular intervention group, but the difference was statistically insignificant (77.2% versus 66.7%, respectively, p = 0.3).

Conclusion. The analysis of obtained results suggests that the primary endovascular strategy may be recommended for all prolonged occlusive lesions of the femoropopliteal segment above the knee joint gap. For lesions below the knee joint, the autovenous bypass grafting remains the operation of choice, but in the absence of a suitable autovenous graft, the primary endovascular strategy may also be recommended. Additional large multicenter randomized trials are required to refine these recommendations.
Predictors of early adverse events after ascending aortic replacement
Authors: Kozlov B. N. , Panfilov D. S. , Sonduev E. L. , Lukinov V. L.
Published: April 2022

Objective. The aim of this study was to identify predictors of adverse events after ascending aortic replacement for the aortic aneurysms in the early postoperative period.

Material and Methods. The analysis included 151 patients with ascending aortic aneurysm who underwent non-hemiarch or hemiarch repair. The following adverse outcomes were selected: postoperative delirium, respiratory failure, bleeding, multiple organ dysfunction syndrome, and in-hospital mortality. Predictors of adverse clinical events were identified by constructing uni- and multivariate logistic regression.

Results. Significant predictors of early outcomes and mortality after ascending aortic replacement were as follows: female gender, atrial fibrillation, low glomerular filtration rate, chronic obstructive pulmonary disease, aortic root repair, multiple organ dysfunction, duration of cardiac arrest, operation time, and reoperation for bleeding.

Conclusions. The risk factors of adverse outcomes after ascending aortic replacement were decreased kidney function, atrial fibrillation, female gender, aortic root repair, and increased duration of cardiac arrest and operation time.
MRI diagnostics of a new type of stress subchondral insufficiency fracture of the knee
Authors: Ivankov A. P. , Seliverstov P. V.
Published: April 2022

Subchondral insufficiency fracture of the knee is a new type of stress fracture, which was previously referred to as spontaneous osteonecrosis of the knee (SONK).

Aim. To determine the informativeness of radiography and magnetic resonance imaging in subchondral fracture of knee insufficiency.

Material and Methods. The study comprised 150 patients including 48% of men and 52% of women. The age of patients ranged from 46 to 82 years. The patients underwent radiography and magnetic resonance imaging of the knee joint followed by the calculation of sensitivity, specificity and accuracy of the methods.

Results. The most common stress fracture of insufficiency was found in the medial condyle of the femur (79%) with the second most common in the lateral condyle of the femur (12%). Most fracture zones (7.9%) were localized in the medial condyle of the tibia, and only 1.1% of fracture zones were in the lateral condyle of the tibia. The informativeness of radiography was low: sensitivity of 68.4%, specificity of 30.0%, and accuracy of 55.1%. Parameters of magnetic resonance imaging informativeness were as follows: sensitivity of 100%, specificity of 99.0%, and accuracy of 98.0%.

Conclusion. Magnetic resonance imaging is the method of choice for stress fracture knee insufficiency because it demonstrated very high indicators of informativeness.
Comparative characteristics of the quality of life in patients with senile asthenia and history of COVID-19 three and six months after discharge from the hospital
Authors: Petrov M. V. , Belugina T. N. , Burmistrova L. F. , Gracheva J. N.
Published: April 2022

Background. Patients with COVID-19 and senile asthenia syndrome (SA) are characterized by extremely high comorbidity, heterogeneity, atypical course of the disease, and large number of complications. We carried out a comprehensive assessment of the quality of life (QOL) in patients with COVID-19 and SA considering the high prevalence of this category of patients and the absence of such studies.

Material and Methods. Group 1 included 37 patients with SA and history of COVID-19 three months after discharge from the hospital. Group 2 included 35 patients with CA and history of COVID-19 six months later. Control group comprised 34 patients with SA aged over 65 years who did not have COVID-19. The assessment of QOL was carried out according to the SF-36 questionnaire.

Results. There was a decrease in absolutely all indicators of physical and psychosocial aspects of health three months after discharge from the hospital. There was a more pronounced decrease in the scales of physical functioning (PF), role-physical functioning (RP), general health (GH), and mental health (MH) after six months. There was a lower QOL in female population according to most scales (PF, RP, GH, MH, and role-emotional functioning (RE)) regardless of the time from the moment of discharge from the hospital, and a higher incidence of depression compared to men.

Conclusions. All QOL indicators of patients with SA and history of COVID-19 decreased within the first three months after discharge from the hospital. At the same time, after six months, a decrease in physical status was most pronounced, while the indicators of mental sphere reduced only according to the MH scale. At three and six months after discharge, the quality of life in the male population was higher than in the female population according to the same evaluation scales (PF, RP, GH, MH, and RE). The best indicators of pain scale in men were characteristic only for the first group of patients, whereas there was no statistically significant difference according to the social functioning and MH data. There was a higher incidence of depression in the female population, while the prevalence of anxiety was higher at three months after discharge than after six months.
Cardiac sarcoidosis: Difficulties and possibilities of differential diagnosis for acute coronary syndrome without ST segment elevation in real clinical practice
Authors: Poponina Yu. S. , Poponina T. M. , Mochula O. V. , Chernyavskaya G. M. , Ryabov V. V.
Published: April 2022

Here we present a clinical case of cardiac sarcoidosis. The article discusses the difficulties of differential diagnosis in patients emergently hospitalized in the cardiology department with recurrent chest pain, no changes in the electrocardiogram (ECG), and a presumptive diagnosis of acute coronary syndrome without ST segment elevation (NSTE-ACS). A careful history taking, invasive coronary angiography, and contrast-enhanced (gadolinium-based contrast media) cardiac magnetic resonance imaging (CMR) contributed to the correct diagnostic decision in search for and identification of cardiac sarcoidosis in the patient.
Repeated prosthetics of the ascending aorta and aortic arch with a homograft for prosthesis infection and ruptured aorta after Bentalla de Bono operation
Authors: Marchenko A. V. , Vronskiy A. S. , Myalyuk P. A. , Oborin A. A. , Petrishev A. A. , Sinelnikov Yu. S.
Published: April 2022

Prosthetic vascular graft infection is a formidable complication after cardiac surgery. Until now, the question on the tactics of managing such patients remains open, as well as the timing of each of the treatment methods such as conservative antibiotic therapy and surgery. In addition, the choice of a method of surgical treatment in itself poses new questions for specialists in regard to what methods to adhere to including prosthesis-preserving technique, prosthesis explantation and its replacement with a synthetic or biological graft, and the use of omentum to cover the infected bed. We present a case of treating a patient with an infected synthetic valve-containing conduit after Bentall de Bono operation and aortic rupture with the formation of false aneurysms. Attention is drawn to the prolonged clinical patient condition manifesting with fever, and the lack of data suggesting an infectious process according to positron-emission tomography and blood cultures. We chose a homograft of the ascending aortic and aortic arch with aortic valve as a conduit. It is also of interest that cultures of infectious prosthesis and aortic valve did not reveal any infectious agent. Aggressive antibiotic therapy in combination with surgical replacement of the infected prosthesis with a cryoprepared allograft allowed for successful treatment of patient without complications.
Clinical application of T1-myocardial mapping: Review of literature and first experience of clinical application
Authors: Baev M. S. , Ryzhkov A. V. , Gavrilova E. A. , Trufanov G. E.
Published: April 2022

The present review summarizes the data of modern studies on the capabilities of non-invasive evaluation of myocardial tissue, which is widely used in clinical practice for diagnosis of various nosologies. The quantitative assessment of myocardial fibrosis via T1 mapping and extracellular volume fraction can replace myocardial punch biopsy. The paper presents the data of quantitative measurements that help to assess the morphological changes in the hearts of professional athletes and the dynamics of exercise-induced myocardial remodeling.
Integration of multimedia components into the models of treatment and diagnostic process in patients and clinical diagnostic tasks in cardiology
Authors: Karas S. I. , Zavadovsky K. V. , Shelkovnikova T. A. , Gulyaev V. M. , Baev A. E. , Vaizov V. Kh. , Grakova E. V. , Balakhonova M. V. , Kara-Sal E. E.
Published: April 2022

Introduction. Integration of multimedia results of diagnostic examinations into the information model of diagnostic and treatment process makes it possible to teach medical decision-making taking into account all available information about the patient.

Aim. The purpose of this work was to use multimedia results of instrumental examination methods to form and verify the level of effective diagnostic decision-making.

Material and Methods. A significant array of multimedia information arising in the course of treatment and diagnostic process was derived from databases of diagnostic units and was important for medical decision-making. The model was supplemented with clinically and demographically relevant studies of other patients when necessary. The multimedia components were integrated into the virtual simulations with two different trajectories of information presentation to the trainees depending on the purpose of further use.

Results. At the first stage of the project, the multimedia components were integrated into linear models of completed cases to demonstrate medical decisions to the trainees. The multimedia components were presented as the fragments of magnetic resonance imaging (MRI) data, echocardiography and vascular ultrasound recordings, scanned electrocardiograms (ECG), angiography results, X-ray images, tomograms, and results of other visualization methods of patient examination. Each multimedia file was accompanied by a textual conclusion made by a relevant specialist. At the second stage, the multimedia components were integrated into the models with a branched trajectory of information presentation. The course of disease and the patient’s condition could change depending on the decisions made, which means that there are alternative scenarios of the therapeutic and diagnostic process unlike the real invariant treatment of the patient. This possibility is especially important for the formation of medical decision-making competencies in safe conditions of simulation. To elaborate clinical diagnostic tasks, the authors developed a rating system quantifying the effectiveness of the decisions.

Discussion. Building physician competencies in the educational process through repeated decision-making under changing conditions is crucially important for the health and lives of patients and can be effectively implemented using simulation technologies. Web access to this content is strategically important for the use of virtual patients with multimedia diagnostic results to practice decision-making skills in clinical disciplines.
IMPROVING THE COMPETITIVENESS OF COMPANIES THROUGH BENCHMARKING IN THE CELLULAR MARKET
Authors:   Государственный университет управления, Кузьмина Е.Ю. , Соклакова И.В. ,   Академия управления и производства,   Московский городской университет управления Правительства Москвы им. Ю.М. Лужкова, Ермилина Д.А. ,   Государственный университет управления,   Московский экономический институт, Бор В.Н. ,   Технико-экономический колледж
Published: April 2022

В статье исследуются возможности повышения конкурентоспособности компаний за счет использования бенчмаркинга на рынке сотовой связи. Изучаются основные игроки на российском рынке мобильной связи «МегаФон», «МТС», «Билайн» и «Tele2». Рассматриваются основные возможности развития компании ООО «Т2 Мобайл» (оператор «Теле2»). Про- водится анализ рынка операторов сотовой связи по состоянию на сентябрь 2021 года, раскрываются возможности использования конкурентной разведки или бенчмаркинга для увеличения доли рынка компании «Т2 Мобайл». Предлагается использовать проект по повышению конкурентоспособности компании до 2024 г., оцениваются результаты внедрения проекта по выходу «Т2 Мобайл» на новый конкурентный уровень по сравнению с основными операторами связи, проводится расчет изменений глобального приоритета рассматриваемых компаний.
PROBLEMS OF INTEGRATION OF TRANSPORT AND LOGISTICS INFRASTRUCTURE OF RUSSIA AND KAZAKHSTAN IN THE SILK ROAD PROJECT
Authors:   Российский университет дружбы народов, Палеев Д.Л. , Черняев М.В. ,   Российский университет дружбы народов, Мосейкин Ю.Н. ,   Российский университет дружбы народов
Published: April 2022

Удачное географическое положение России и Казахстана делает эти страны участниками глобального транзитного маршрута из Китая в Европу. Перетягивание части товарного потока на сухопутные маршруты открывает большие экономически перспективы и способствует объединению усилий стран ЕАЭС в продвижении общего бизнеса. Однако существует множество препятствий экономического, политического, технологического и иного характера, которые замедляют реализацию проекта. В статье рассматриваются основные препятствия в сотрудничестве России и Казахстана по участию в китайском проекте нового шелкового пути.
THE ECONOMY OF THE AGRO-INDUSTRIAL COMPLEX
Authors:   Институт права и управления МГПУ, Савостин Д.С. , Савостин С.Д. ,   Московский государственный университет пищевых производств, Магомедов М.Д. ,   Институт права и управления МГПУ, Строев В.В. ,   Государственный университет управления
Published: April 2022

В статье обращено внимание на большую значимость животноводческой продукции для населения страны; показано состояние производства мяса, молока, яиц и комбикормов в Российской Федерации в последние годы; указано на позитивное влияние на экономику РФ роста экспорта животноводческой продукции; научно обоснованы направления увеличения количества производимой животноводческой продукции и комбикормов в стране; указано на необходимость использования фуражного зерна на корм животных только в составе комбикормов; раскрыто экономическое преимущество производства комбикормов на малых комбикормовых предприятиях; подробно изложены возможные виды малых комбикормовых предприятий; даны рекомендации по снижению себестоимости комбикормов при их производстве.
Development of algorithm for Newtonian compressible fluid flow based on finite element method
Authors: Mohammed Fatima A.
Published: April 2022

In this article, we present the numerical investigation for compressible Newtonian flow in two dimensional axisymmetric channel. Galerkin finite element method is applied to accommodate compressible and incompressible flows. A continuity equation and time-dependent conservation of momentum equations are used to describe the motion of the fluid, which are maintained in the cylindrical coordinate system (axisymmetric). To meet the method analysis, Poiseuille flow along a circular channel under an isothermal state is used as a simple test problem. This test is conducted by taking a circular section of the pipe. Comparision between compressible and incompressible results in terms of convergence has been conducted for axial velocity and pressure. Findings reveal that, convergence-rates of velocity and pressure is faster an incompressible case compared to compressible. In addition, the level of velocity convergence is higher than pressure for both compressible and incompressible. Moreover, the low level of Mach number demonstrates that piecewise-constant density interpolation is equitable to linear density interpolation
An Efficient Three-step Iterative Methods Based on Bernstein Quadrature Formula for Solving Nonlinear Equations
Authors: Saeed Huda J.
Published: April 2022

In this study, we suggest and analyze two new one-parameter families of an efficient iterative methods free from higher derivatives for solving nonlinear equations based on Newton theorem of calculus and Bernstein quadrature formula, Bernoulli polynomial basis, Taylor’s expansion and some numerical techniques. We prove that the new iterative methods reach orders of convergence ten with six and eight with four functional evaluations per iteration, which implies that the efficiency index of the new iterative methods is (10)1/6 1.4678 and (8)1/4 1.6818 respectively. Numerical examples are provided to show the efficiency and performance of our iterative methods, compare to Newton’s method and other relevant methods.
Preparation of Fe2O3 Nanoparticles from Mixing Henna Extract With Ferric Chloride to Cytotoxic Assay on Cancer Cell Line
Authors: Kadhim Duha A.
Published: April 2022

Green synthesis of cytotoxic assay of iron oxide nanoparticles (Fe2O3) NPs was on cancer cell line prepared from mixing (henna) extract with iron chloride (III) salts at 200 oC for 2 hours by simple chemical method. (Fe2O3) NPs were identified using X-ray diffraction, filed Emission-Scanning Electron Microscopy, Ultravolite visble, and Photoluminescence. XRD measurements explained crystalline size (30) nm with (hexagonal) structure for (Fe2O3) NPs using henna extract. FE-SEM showed average grain size of (Fe2O3) NPs were (18.61) nm. (Fe2O3) NPs were tested for their cytotoxic effect against human cancer cells and inhibition rate % results were very high. Results of inhibition rate % for (Fe2O3) NPs using henna extract for human cancer cells were (78.9%).
Electron Transport Through Two Branch Interferometer with Rashba Spin Orbit Interaction
Authors: Dhahir M. T.
Published: April 2022

In this paper, a theoretical model for electron transport through two branch interferometer with one quantum dot in each of its arms has been considered. Both a magnetic flux applied on the circuit and the Rashba spin orbit interaction inside the two dots are taken into account, Rashba spin-orbit interaction contribution are exhibited obviously in the double quantum dots system for the thermoelectric effect, by varying the temperature of the leads , we calculate the conductance (G) and the thermopower (S).
Design of High Gain Slotted Circular Microstrip Antenna for X-band Applications
Authors: Mutashar Riyam A.
Published: April 2022

In this study, new structures of circular microstrip antennas, which operating in X-band frequency using etched slots on the patch radiating, are designed and simulated. These slots are rectangular and crescent shapes in different sizes. The proposed structures are fed by a coaxial line feed. The antennas designed are simulated and studied in order to obtain the optimum performance of the proposed antenna using Ansoft High Frequency Structure Simulator. The simulated results were discussed in terms of reflection coefficient, input impedance, gain, radiation patterns and surface currents. It is found that the optimum antenna design has resonance frequency 9.346 GHz with a bandwidth of reflection coefficient of 705 MHz, which is required for X-band applications. Therefore, this optimum designed is helpful for many applications in the system of modern wireless communication.
Design and Analysis of Double-Band Printed Corrugated Circular Patch Antenna for Wireless Communication Applications
Authors: Shadkh Jasim kaittan
Published: April 2022

In this paper, a novel structure of a circular patch microstrip antenna based on external corrugations is designed, simulated, and measured to operate in S and C-bands applications. The parameters of this antenna structure, such as input impedance, bandwidth, gain, surface currents, and radiation patterns were studied and improved. This antenna design includes modifying the shape of the radiating patch by cutting seven parts of the tip patch as semi-oval with a diameter and depth of 2 mm between each part, 450 angles. The antenna ground plane was reduced to the size of 40×13 mm2. The insulating substrate has dimensions of 50×40×1.6 mm3. The obtained results showed a good improvement of the antenna performance with resonant frequencies of 3.1 GHz, 7.1 GHz, and fractional bandwidth of 40.8%, 12.4% respectively. This design is simulated using Ansoft High-Frequency Structure Simulator (HFSS), and it is compared with the obtained measurement data. Interestingly, the comparison results are in good agreement. The antenna design is helpful for many services operations at these bands of frequencies and their applications.
New Chalcones Derivatives, Determine Their Chemical Structure Using 1D and 2D-NMR Spectroscopy
Authors: Abbas Wahaj Raed
Published: April 2022

The complete 1H and 13C NMR assignment of new chalcones compounds has been obtained using one-and two-dimensional NMR techniques including COSY, HMQC, and HMBC experiments. The data deduced from this study show that the alkyl chain and the phenyl ring are in different planes compared to the chalcones ring.
Synthesis, Characterization of New di Schiff base Derivatives from Dapsone, Their Polymerization and Thermal study
Authors: Ahmed A.A.
Published: April 2022

Schiff bases were containing (-C=N-) functional group and found to be a versatile compound. In this study new three Schiff bases compounds were prepared in the presence of catalyst through condensation products of 4,4'-sulfonyldianiline with carbonyl compounds using microwave. These compounds characterized by using FTIR, H-NMR and Mass spectroscopy. Also, they were polymerized to produce poly ester and phenolic resin through condensation polymerization, their thermal stability was evaluate using (TGA and DSC) techniques, the result show that the polymers have decomposition temperature more than 150 C0 and also the results show that the weight residue more than 70%, and the phenolic resin was more stable than polyester.
Estimation of Some Hematological Parameters, Liver Enzymes and Iron Mineral in Adult of Celiac Disease Patients
Authors: Shakir Sahab K.
Published: April 2022

Celiac disease is one of the most prevalent chronic illnesses. It is produced due to gluten, a protein found in wheat, rye, and barley that damages the villi, so the body cannot adequately absorb nutrients. This s tudy was undertaken to determine of some hematological parameters, liver enzyme and iron (Fe) in celiac disease patients compared with the healthy group. The results indicated a high significantly increase (p ≤ 0.01) in levels of ALT (alanine transferase), ALP (alkaline phosphatase), ESR (erythrocyte sedimentation rate), AST (aspartate transferase) in age category (41-60) and WBC (white blood cells) in age category (41-60), while significantly increased (p ≤ 0.05) in levels of AST and WBC in age category (20-40) in celiac disease patients as compared with healthy group. High significantly decreased (p ≤ 0.01) in levels of hemoglobin in age category (20-40), RBC (red blood cells) and Fe, while levels of hemoglobin in age category (41-60) was significantly decreased (p ≤ 0.05) in celiac disease patients as compared with healthy group. In celiac disease patients of age category (20-40) as compared with age category (41-60), there was a high significant difference (p ≤ 0.01) in ESR, AST and Fe and significant difference (p ≤ 0.05) in ALT and ALP, while no significant in hemoglobin, RBC and WBC in celiac disease patients of age category (20-40) as compared with age category (41-60). This study concludes that untreated celiac disease causes nutrient deficiencies due to malabsorption, which causes anemia, inflammations, and elevated liver enzymes.
Synthesis and Characterization of Some Recycled Polystyrene and Chitosan Based Copolymers for Water Hardness Removal
Authors: Al-Mosawi Hussein A.
Published: April 2022

Two sets of polymeric resins were prepared and used as ion exchange for the estimation of tap water's total hardness. The first set consisted of three different resins based on the sulfonation of the recycled polystyrene cup tea waste, and the other two resins were produced by grafting polymerization of the acrylamide monomer and its extended polyacrylamide polymer. The second set is based on Chitosan and its grafted derivatives of Chitosan-succinyl-poly (ethylene glycol) polymer. All the prepared resins were characterized by FTIR which confirmed the correctness of the sulfonation process and hence the grafting polymerizations on sulfonated polystyrene and Chitosan. The grafting process causes an increasing efficiency of the sulfonated polystyrene resin from 4% to 54% with sulfonated resin-g-acrylamide monomer in removing the tap water hardness. This resulted in an increase in the chain length of the acrylamide monomer grafted onto the resin via free-radical polymerization with potassium persulfate as an initiator. It increases the efficiency of the consumed resin grafted with polyacrylamide to 80.22%. While with the Chitosan grafted set, the efficiency is increased from 19% to 86% with Chitosan-g-N-succinyl-poly (ethylene glycol)
Quality and nutritional investigation of some water sources in Sulaimani city
Authors: Abdalla Azad Ismael
Published: April 2022

Several water treatment and distribution station in Sulaimani city has been investigated to discover their safety, quality and nutrition. This is to ensure public health protection. In this regard, water samples were collected from certain sites (underground and surface water). Water analysis was conducted in terms of several parameters, such pH, total dissolved solids (TDS), electric conductivity (EC), total hardness, calcium, magnesium, potassium, sodium and chloride content. The results were compared to universal standards (World and health organization (WHO) & national drinking water quality standard) and local standard (Iraqi standards). It was found that the majority of results within a safe range by both universal and local standards. However, water samples from some sites (in one or two parameters) were only acceptable by local standard, this includes some sites that was out of safe limit by both standards. Apart from acceptability and quality, the impact of drinking water from selected distribution tanks on a possible long-term health risk has been found. This investigation was confirmed data just for year 2019. Continuous analysis needs to be conducted and other water treatment and distribution stations have to be investigated to ensure full public health protection of Sulaimani city.
Changes in Some of Heavy Elements Concentrations and Their Relationship with Some Environmental Factors in The Iraqi Coastal Water
Authors: Al abdulaziz B.A.
Published: April 2022

Five environmental factors were recorded in the areas near Basra oil port and near Buoy 17 in addition to the Umm Qasr Port. The three locations that are concerned within this study represent sites of movement of steamers and oil tankers. Where the monthly study was conducted on the changes occurring in the Electrical conductivity, water temperature, pH, turbidity and total dissolved solid. The current study indicated that the temperature values were within their annual rates as they ranged from 14-34 °C and the values of pH were that within the ranges prevailing characteristic of Iraqi coastal waters, while Electrical conductivity recorded low values during January in all study stations. Moreover, the turbidity and TDS have low values and high values were recorded in the first and second stations. The relation between those factors with four heavy metals Fe,Cd.pb and Zn was studied. This study is considered as a data base involving the many different parameters and alterable changes in the Iraqi marine waters, hence, it contains essential information which can be used for comparison in case of extension of salt tide to Shatt Al -Arab river.
Mapping of Soil Degradation Status on Various Land Slope in Paranggupito, Wonogiri
Authors: Mujiyo  , Ahmad Norri Prasetyo  , Aktavia Herawati  , Dwi Priyo Ariyanto  , Hery Widijanto
Published: April 2022

Soil degradation causes in loss of soil function in supporting living things. The slope of the land has a potential to cause soil degradation. This study aims to provide scientific information on the status of soil degradation in the form of a map, and to provide recommendations for improvement based on the determinant factor. Land map units were determined by overlay of maps; soil type, rainfall, slope, and land use. Research area were divided into 12 LMU, and each of it was repeated by 3 site samplings. Analysis of soil degradation status accordings to Government Regulation of the Republic Indonesia. ANOVA was used to determine the effect of the land slope on the soil degradation status. Correlation analysis used to know the relationship between the parameters with soil degradation. The result shows the status of soil degradation is slightly degraded (R.I) in 6.032,44 ha (100% area research) with different limiting factors. Land slope 16-25% has the highest impact on soil degradation with the determinant parameters were bulk density and a total of porosity. Soil bulk density increases along with increasing steep slope. Efforts to improve the status of soil degradation are by giving organic matter and minimizing soil tillage.
The effect of campaign of the plastic bag use reduction policy toward “green behavior” of Bogor City society
Authors: Carolin Lulik Tafsia  , Mulatsih Sri , Sumardjo
Published: April 2022

The Municipal Government of Bogor City issued a regulation in reducing the use of plastic bags to decrease the volume of plastic waste in Bogor City. The regulation has been implemented since December 1st, 2018. This study aims to find out the influence of socialization policy on the awareness, attitudes, and actions of Bogor City Society in reducing the use of plastic bags. This study uses the analysis method of Structural Equation Modeling (SEM). The result of this study demonstrates that there is a positive relationship between policy socialization towards the forming of awareness, attitudes, and actions of Bogor City society in reducing the use of plastic bags, in addition, awareness and eco-friendly attitudes also have a positive influence on the forming of actions to reduce the use of plastic bags. Therefore, for the policy to run effectively, it is necessary to increase policy socialization to increasingly heighten awareness, attitudes, and actions of the Bogor City society in reducing the use of plastic bags.
Potential Environmental Impact of Biodiesel Production from Palm Oil using LCA (Life Cycle Assessment) in Indonesia
Authors: Paminto Ari , Karuniasa Mahawan , Frimawaty Evi
Published: April 2022

Primary energy production in Indonesia in 2018 consisting of petroleum, natural gas, coal and renewable energy reached 1,504 million BOE (Barrel of Oil Equivalent). Dependence on the use of fuel oil (BBM), especially in the transportation sector, is still high. The global commitment to reducing greenhouse gas emissions encourages the Indonesian government to support the role of new and renewable energy. Life cycle assessment (LCA) has become a popular technique applied to evaluate the environmental impact, energy consumption and GHG (Greenhouse Gas) emissions of biofuel production. To evaluate the life cycle impact of biodiesel, many steps have to be considered including land use change, plantation, milling, refining, fuel conversion. There have been several studies reporting the life cycle of palm oil production. However, most of them are still focused on GHG emissions and energy needs. Therefore, this paper will present LCA with broader impact categories of biodiesel production in Indonesia from the plantation phase to the production phase. Based on the analysis carried out, it can be concluded that the main contributor to the environmental impact of biodiesel production is the use of fertilizers at the plantation stage and the transesterification process at the biodiesel plant
Analysis of Erosion Management Based on GeoWEPP Spatial Modeling on Bauxite Mining Activities PT. XYZ in West Borneo
Authors: Santoso Rika Setiabudi , Mulatsih Sri , Setiawan Yudi
Published: April 2022

Bauxite ore open-pit mining activities are conducted in spread areas and increase the potential for water pollution, implying a need for good management. GeoWEPP is a spatial model that predicts the erosion magnitude and the location of sedimentation. This helps in erosion management and control, including constructing a settling pond. Therefore, the purpose of this study was to examine GeoWEPP based on land use, topographic and soil maps, as well as rainfall and temperature data. The results showed that 30 hills with a total area of 13 602.48 Ha obtained sediment of 150 186 m3/month and the amount of run off of 4 202 267 m3/month. Furthermore, GeoWEPP analysis on the planned mining block area obtained 30 outlet points to be used as the location for the settling pond construction. The optimistic and pessimistic cost of constructing the entire settling pond is Rp. 222 047 640 944 and Rp. 222 773 049 768, respectively. Additionally, the cost of settling pond maintenance at all outlet points during operation is Rp. 3 139 414 818. Planting cover crops in ex-mining areas is very effective in reducing erosion.
Diseño y validación de un instrumento para evaluar la pertinencia de programas educativos de licenciatura en danza contemporánea
Authors: Avila García Yeny , Ruiz González Gabriela , Lee Blanca Laura
Published: April 2022

Estudios en torno a los procesos formativos en danza contemporánea (2019), dan muestra de la limitada coherencia que existe entre los planes de estudios y el contexto laboral. Ante la falta de instrumentos confiables para evaluar la pertinencia de los programas educativos de licenciatura en danza, el objetivo del presente estudio es describir el proceso de diseño, validación de contenido y análisis de confiabilidad del instrumento CEPPED-C (Cuestionario para Evaluar la Pertinencia de los Planes de Estudio en Danza Contemporánea). Los resultados obtenidos de acuerdo a la V de Aiken para pertinencia y redacción fueron superiores a 0.85 en ambos criterios para todos los ítems. El análisis de la consistencia interna reveló un alfa de Cronbach de 0.992. En conclusión, se presenta un instrumento pertinente para evaluar la pertinencia de los planes de estudio en danza contemporánea. Es importante realizar estudios complementarios de validez y confiabilidad.
Methodology for Calculating Bacterial Endotoxin Limits
Authors: Shapovalova O. V. , Neugodova N. P.
Published: April 2022

Product specification files for parenteral medicines, as well as for active ingredients used in their production, have to include the “Bacterial endotoxins” parameter that controls the content of pyrogenic impurities. The experts of the Federal State Budgetary Institution “Scientific Centre for Expert Evaluation of Medicinal Products” of the Ministry of Health of the Russian Federation proposed recommendations for calculation and selection of the bacterial endotoxin limit, which will help applicants to include correct requirements for bacterial endotoxin limits in their product specification files. The proposed algorithm for the selection of bacterial endotoxin limits will make it possible to reduce the risk of pyrogenic reactions in patients and ensure safe use of medicinal products.
Diffusion-Ordered NMR Spectroscopy Application for Analysis of Polysaccharides
Authors: Kuz’mina N. E. , Moiseev S. V. , Severinova E. Yu. , Luttseva A. I.
Published: April 2022

Diffusion-ordered nuclear magnetic resonance spectroscopy (DOSY) is a molecular transport method in analytical chemistry, based on experimental recording of the molecules’ translational mobility at thermodinamic equilibrium in a solution. The translational mobility is characterised quantitatively by a self-diffusion coefficient. The aim of the study was to summarise the main trends in application of DOSY for the analysis of natural and modified natural polysaccharides used in pharmaceuticals and pharmaceutical biotechnology. The review shows that this method is an effective instrument for monitoring fractionation during isolation of polysaccharides from a natural mixture, for estimating their average molecular weight and molecular weight distribution, and for studying the formation of supramolecular systems based on polysaccharides. The paper describes main issues of the precise measurement of polysaccharide macromolecules self-diffusion coefficients and provides the correction factors to compensate for errors caused by fluctuations in temperature and viscosity of solutions. The observed scatter of self-diffusion coefficients of narrowly dispersed polymer macromolecules nuclei is explained using the polyphase concept. The paper illustrates ways of describing translational mobility of a polyphase polymer macromolecule as a whole. The authors summarise values of the gradient pulse sequence parameters used in quantitative measurements of self-diffusion coefficients of linear, low-branched, and branched polysaccharides.