bluuebunny/crossref_metadata_2025 huggingface dataset:
STUDYING SERUM URIC ACID CONCENTRATION IN ESSENTIAL YPERTENSIVE PATIENTS
Authors: Nguyen Thi Thuy Hang
Published: March 2020

Background : Evaluation of serum uric acid concentration contribute to understanding the complications of hypertension on the kidney as well as determination the relationship between levels of uric acid in the blood with a number of factors involved in essential hypertensives. Purposes: (1) Determination of serum uric acid concentration in essential hypertension. (2) Survey a number of involved factors hypertensives with serum uric acid concentration. Materials and method: 82 patients, the mean age: 62,24  2,30 years old, was diagnosed with essential hypertension is based on the criteria and classified of WHO/ISH (2004), blood pressure measurement, ECG, quantitative serum uric acid concentration, serum lipid profile, renal function. Results: The results showed that serum uric acid concentration in hypertensives was 382,2  24,5  mol/l which is 404,7  27,3  mol / l in men, and emales 330,8  48,0  mol / l in women. There were significant correlation between blood levels of uric acid with hypertensive levels (r = 0,23, n = 82, p <0,05) with time detection of hypertension (r = 0,21, n = 82; p <0,05), with renal function (r = 0,35, n = 82, p <0,01), with body mass index (r = 0,42, n = 82, p <0.001), with triglyceride and cholesterol (r=0,51 and 0,38, respectively) also reverse correlated with HDL - cholesterol (r = - 0.47, p <0,001). Conclusion: The concentration of serum uric acid closely related with hypertensive levels and a number of factors involved in hypertensive patients. Key words : serum uric acid concentration, essential hypertension.
IMPACT OF ZINC SUPPLEMENTATION ON MORBIDITY FROM DIARRHEA NAD ACUTE RESPIRATORY INFECTIONS AMONG MALNOURISHED CHILDREN AGED UNDER 5 YEARS AT HUONG HO COMMUNNE, HUONG TRA DISTRICT, THUA THIEN HUE PROVINCE
Authors: Nguyen Thu Cu
Published: March 2020

Tittle: study the impact of Zinc supplement on acute respiratory infection and diarrhea in children under 5 yrs at Huong ho commune, Huong tra district, Thua Thien Hue province. Background: diarhea and pneumonia are two common diseases in malnutrition children. The studies showed that zinc is a microsubstance to improve the immune capacicty of children. Many studies showed that malnutrition children gone with zinc deficiency. The study is aim to assess the impact of zinc supplement on malnutrition children with diarrhea and acute respiratory infection (ARI). Population and study methods: Population: 129 malnutrition children under 5 yrs living at Huong ho commune, Huong tra district, Thua Thien Hue province. Study methods: intervene at community with control group. 2 groups of children have the similarity of age, sex, level of malnutrition, avarage weight. Study group: supplement with Zinc 10 mg/day x 30 days. Control group: no zinc supplement. Both groups were followed up about diarrhea and ARI every week in 6 months. Result: In 6 months, there was 24,6% of children in study group has the diseases while in control group was 43,7% (p<0,05). Avarage time of diarrhea per period in study group was shorter significantly than in control group (4,1±0,8 vs 6,0±1,4) (p<0,01). There was no diferrence in average diarrhea period, incidence of diarrhea between study group and control group. There still did not find out the difference in ARI period, incidence of ARI between study group and control group. Conclusion: Zinc supplement for malnutrition children is to reduce the general acquired rate of diarrhea and ARI, especially to reduce the time of diarrhea period. This study did not find out the improvement of acquired ARI in study group with zince supplement. Keywords: Malnutrition, zinc, diarrhea
STUDY ON THE VALUE OF C-REACTIVE PROTEIN IN CHILDREN WITH ACUTE GLOMERULONEPHRITIS
Authors: Ho Viet Hieu
Published: March 2020

Background: We had assessed the value of C-reactive protein (CRP) in children with Glomerulonephritis Acute (GNA). Study on the interrelation between CRP and the signs of clinic, paraclinic. Population and Methods: Patients : 35 patients with GNA age 1 – 15 years old in Pediatric Department of Hue Central Hospital from 4 / 2008 to 4 / 2009. Methods: Prospective, descriptive study. Results: No fever (74.30%); White blood cells>7000/mm3 (60%); Blood sedimentation rate>10mm (74.30%); ASLO>200UI/L (37.14%); normal CRP≤ 8mg/l (60%); CRP>8mg/l - 300mg/l (40%). CRP is no related to the fever sign (r = 0,162; p>0,05). CRP is positive tightly correlated with White blood (r = 0.680; p<0.05), with ASLO (r = 0,660; p<0,05) and CRP is positive moderate correlated with Blood sedimentation rate (r = 0,392; p<0,05). Conclusions: The CRP increased in GNA of children is 40%. Before treating, the average concentration of CRP is 12,88 ± 30,93 mg/l . After treating, the concentration of CRP is≤8mg/l (97.10%). Key words: CRP; Glomerulonephritis Acute
CLINICAL AND PARA-CLINICAL CHARACTERISTICS OF SICK NEWBORN BABIES TREATED AT PEDIATRIC DEPARTMENT OF HUE UNIVERSITY HOSPITAL
Authors: Nguyen Thi Kieu Nhi
Published: March 2020

Objectives: 1. Describe neonatal classification of WHO. 2. Identify some principal clinical and paraclinical signs of term, preterm, post term babies. Patients and method: an observational descriptive study of 233 newborns hospitalized in neonatal unit at Hue university‘ s hospital was done during 12 months from 01/01/2009 to 31/12/2009 for describing neonatal classification and identifying principal clinical and paraclinical signs. Results: Premature (16.74%); Term babies (45.5%); Post term (37.76%); Premature: asphyxia (43.59%), hypothermia (25.64%), vomit (30.77%), jaundice (61.54%), congenital malformation (17.95%); CRP > 10mg/l (53.85%); anemia Hb < 15g/dl (12.82%). Term babies: poor feeding (21.7%); fever (24.53%); CRP > 10mg/l (53.77%); Hyperleucocytes/ Leucopenia (35.85%). Post term: respiratory distress (34%); lethargy (29.55%); vomit (26.14%); polycuthemia (1.14%); hypoglycemia (22.73%). Conclusion: each of neonatal type classified by WHO presente different clinical and paraclinical. Signs. The purpose of this research is to help to treat neonatal pathology more effectively.
OUTCOMES OF PRIMARY PTERYGIUM EXCISION WITH AMNIOTIC MEMBRANE TRANSPLANTATION
Authors: Phan Van Nam , Nguyen Thanh Hai , Pham Nhu Vinh Tuyen
Published: March 2020

The study of primary pterygium excision with amniotic membrane transplantation contribute to the treament of pterygium. Objectives: To evaluate the outcome of primary pterygium excision with amniotic membrane transplantation. Methods: prospective study, clinical case study with no control. Results: 69,44% patients with primary pterygia were mainly at the age 20 to 60 years. Pterygia at level III were 71,15%. After surgery visual acuity was not remarkably increased while astigmation was reduced remarkably. Good result was 93,67%. Recurrent rate at 3 months after surgery was 2,08%. Conclusion: Pterygium excision with amniotic membrane transplantation has many benefits like highly cosmetic, meet the patient’s demand and saving conjuntiva. This method has the same recurrent rate compare wih other methods. Key words: pterygium, amniotic membrane, recurrent, conjuntiva, transplantation.
A STUDY ON COMPARISING BETWEEN THE VALUE OF RATIO BODY FAT (BFP), THE VISCERAL FAT (VFL) AND BMI, WAIST AND SOME OF THE CARDIOVASCULAR - METABOLISM RISK FACTORS
Authors: Nguyen Hai Quy Tram , Hoang Khanh Hang
Published: March 2020

Objective: To survey the value of Percentage Body Fat ( BFP) and the visceral fat (VFL) in some of the Cardiovascular risk factors assessment in the community. Subjects and methods: 2530 people (1161 men and 1369 women) more than 15 years old; BMI, WAIST, BFP and VFL were measured by Omron machine through two community researches in Thua Thien Hue from 2007-2008. Results: 1.Percentage of Body Fat ( BFP) in men, slightly above high level is 54.2% and above high level is 21%. 2. Percentage Body Fat (BFP) in women, slightly above high is 85.28% and above high level is 65.88%. 3. Percentage the visceral fat (VFL) in men, slightly high is 16.52% and above high level is 1.22%. 4. Percentage the visceral fat (VFL) in women, slightly high is 8.21% and above high level 0.52%. 5. In groups of people regardless of male or female whose VFL ≥ 15: 61.9% hypertension, 66.7% hyperglycemia, 76.2% patients have cholesterol concentration at risk, 66.7% at the early (non?) concentration increased - HDL.C risk and both of them are higher than BMI ≥ 23 group. 6. In the men groups with Percentage of the visceral fat (VFL) ≥ 15: 57.14% hypertension, concentration risks HDL.C is 21.42% higher than groups with VB at risk. While the group BFP that the rate of factors biological risk lower than the group which has BFP and VFL ≥ 15. 7. Percentage of the visceral fat (VFL) in women ≥ 15 with the rate of hypertension is 71.42%, concentration risks HDL.C is 100%, TG is 71.42%, LDL.C is 85.71% and Non-HDL.C is 85.71%. All are higher than the risky waistgroups, while the female group BFP that the rate of factors bilogical risk lower than the risk of BFP and VFL ≥ 15 group. 8. VFL levels ≥ 10 in men has the rate of hypertension 43.35%, blood glucose ≥ 5.6 mmol is 49.75%, TC concentration risk is 62.06%, TG concentration risk is 61, 57%, the concentration LDL.C risk is 54.18% and non-HDL.C risk is 58.03% are equal or higher than the groups with risky waist while BFP level in men ≥ 20 has the rate of risk factors are much lower than the risk of the group with BFP ≥ 10. 9.In VFL levels ≥ 10 in men: 41.52% hypertension, blood glucose ≥ 5.6 mmol is 57.62%, 62.71% have TC concentration at risk, TG concentration risk is 55, 08%, the concentration LDL.C risk is 62.71% and non-HDL.C risk is 59.32% are equal or higher than the groups with risky waist while BFP level in men ≥ 30 has the rate of risk factors are much lower than the risk of the group with risky waist and BFP ≥10. Conclusion: There is no value in BFP Index but VFL Index is significant in cardiovascular risk prediction and VFL Index probably ≥ 10 instead of ≥ 15 as some of previous recommendations.
TERMINATION OF PREGNANCY LESS THAN 49 DAYS USING MIFEPRISTONE AND MISOPROSTOL
Authors: Do Thi Kim Ngoc , Nguyen Vu Quoc Huy
Published: March 2020

Objectives: 1.To evaluate the effectiveness and safety of Mifepristone and Misoprostol in termination of pregnancy less than 49 days. 2. To evaluate the acceptability and side effects of that treatment scheme. Materials & Methods: 169 pregnant women less than <49 days demanding medical abortion at Can Tho Reproductive Health Center during the period of June 1st 2009 to May 30th 2010. Mifepristone 200mg was administered orally, followed by onsite monitoring during 30 minutes; Misoprostol 400 µg were administered orally 48 hours later by th facility at the center. Follow-up visit for 2 weeks was made after using Mifepristone. Results and Discussion: Rate of successful pregnancy termination was 95.3%. Mean duration between Mifepristone and Misoprostol use and abortion is 4.3 ± 3.7 hours. Satisfaction rate is 89.4%. Observed Mifepristone’s side effects include abdominal pain (35.8%), nausea (20.3%), and vomit (4.8%); Misoprostol’s side effects include abdominal pain (86.6%), nausea (33,7%), vomit (8,6%), fever/child, fatigue and diarrhea (7.5%). Conclusions: Mifepristone and Misoprostol are safe and highly effective for termination of pregnancy less than 49 days.
THE EFFECTIVENESS OF THE COMMUNITY INTERVENTION TO PREVENT PREDIABETES IN CAU NGANG DISTRICT, TRA VINH PROVINCE
Authors: Cao My Phuong , Dinh Thanh Hue , Nguyen Hai Thuy
Published: March 2020

Objectives: To determine the prevalence and characteristics of prediabetes and evaluating the effectiveness of the community intervention to prevent prediabetes in Cau Ngang district, Tra Vinh province. Subjects and Method: People aged 45 years and older living in Cau Ngang district were researched by a cross – sectional study and a community – intervention study. Results and Discussion: The prediabetes prevalence with n = 2216 were 19.3%. The prevalence of subjects at the age of 65 and older seems greater than that of the 45 - <65 years-old group: 24.4% vs 16.9%. The prediabetes prevalence of Kinh group and Khmer group are 19.5% and 18.9% (p > 0.05) respectively. Levels of education are not probably relative with prediabetes. The physical occupation group has prediabetes prevalence of 17.6%, lower than that of the mental occupation group 18.9% and the non-occupation group 22.6% (p<0.05). The prediabetes prevalence in farmers of 16.6% seems greatly lower than the others. Religion is not likely to affect the prediabetes prevalence. After the community – intervention: The prediabetes prevalence of the intervened group is 13.2%, which is significantly smaller than that of the control group 16.2% (p < 0.05). The interventional efficiency is 32.7%. The prediabetes prevalence in the control group has not showed significant difference. There is a greatly positive change in the health behavior index of the intervened group. Conclusion: The prediabetes prevalence in Cau Ngang district is 19.3% (n=2216). Intervening in community to prevent prediabetes has showed a positive effect, with the interventional efficiency of 32.7%.
FACTORS INFLUENCING LOWER REPRODUCTIVE TRACT INFECTIONS AMONG FEMALE WORKERS OF BA RIA RUBBER COMPANY
Authors: Vo Van Thang , Nguyen Quang Minh
Published: March 2020

Objectives: This study defines the prevalence and factors relating to lower reproductive tract infections of female workers of Ba Ria Rubber Company. Subjects and Methods: Using the design of cross-sectional study from June 2009 to May 2010, a total number of 506 female workers of Ba Ria Rubber Company had been chosen to be interviewed, examined and tested for diagnosing of lower reproductive tract infections and related factors. Results and Discussion: It showed that the prevalence of lower reproductive tract infections (RTIs) was 43.1% in which 25.23% of Candida albicans, 1.83% of Trichomonas, 15.14% of Gardneralla and 57.80% of bacteria. Conclusion: Some related factors were work place, characteristics of job, economic conditions, the quality of water supply, female workers’ history of abortion, contraceptive methods, bathroom and environmental conditions at work place.
Key words: Reproductive tract infections (RTIs), working environmental conditions.
NTESTINAL METAPLASIA AND HELICOBACTER PYLORI INFECTION IN PATIENTS WITH CHRONIC GASTRITIS.
Authors:   Thi Van Khanh Dao, Trung Hieu Pham,  Cong Thuan Dang, Van Huy Tran
Published: March 2020

Background: Intestinal metaplasia is a precancerous lesion. Helicobacter pylori is identified as an important cause of gastric cancer. This study is aimed at assessing the intestinal metaplasia and Helicobacter pylori infection and their relation in patients with chronic gastritis. Patients and methods: Study includes 75 patients with chronic gastritis diagnosed by clinical, endoscopic and histopathological criteria. Intestinal metaplasia is diagnosed by HE stain. Hp infection is tested by CLO-test from Viet A Ltd. Results: Hp infecton rate in this study is 66.67% and is highest in patients with antral gastritis. Intestinal metaplasia is found in 29.33% of patients with chronic gastritis with the predominance of complete intestinal metaplasia. The rate of intestinal metaplasia is the highest in the group with chronic atrophic gastritis. There is a significant relationship between intestinal metaplasia and Hp ìnfection. Conclusion: Hp and intestinal metaplasia are found at significant rates in chronic gastritis. The rate of intestinal metaplasia is clearly higher in the group with Hp-positive chronic gastritis.
EVALUTING THE EFFECTS OF EARLY INTERVENTION PROGRAM FOR CHILDREN WITH DEVELOPMENTAL DISABILITIES IN COMMUNITY
Authors:   Viet Nhan Nguyen, Thi Dieu Hong Hoang, Thi Phuong Anh Tran, Thi Cam Tu Huynh
Published: March 2020

Objectives: To evualate the effects of early intervention program after one year for 33 disabled children in Hue city in 2010. Objects and Methods: Conduct with practical work and assessment on developing levels at different skills of the children with developmental delay under 6 years old who are the objects of the program. Results: With the Portage checklist used as a tool for implementing the intervention at the community and assessing developing skills on Social, Cognition, Motor, Self-help and Language skills for children with developmental delay, there still exists significant difference (p ≤ 0.05) at developing level of all areas in the first assessment (January, 2010) and the second assessment (December, 2010) after 12 months. In comparison among skills of different types of disabilities, there is significant difference of p ≤ 0.05 of social, cognition and language skills in the first assessment and of social, cognition, motor and language skills in the second assessment. Conclusion: Home-based Early Intervention Program for children with developmental delay has achieved lots of progress in improving development skills of the children and enhancing the parents’ abilities in supporting their children at home.
CASE REPORT: ACUTE MYOCARDITIS MIMICKING ACUTE MYOCARDIAL INFARCTION
Authors: Hoang Thi Ngoc Thu , Nguyen Anh Vu
Published: March 2020

Myocarditis- pericarditis is one of the causes of severe chest pain with difficult positive diagnosis, mainly diagnosed after excluding other causes such as acute coronary syndrome, aortic aneurysm dissection, pneumonia, pulmonary embolism ... We present the case of myocarditis-pericarditis, the diagnosis should be thought of in young patients with angina at Cardiovascular Center -Hue Central Hospital.
ASSESSMENT OF QUALITY OF LIFE IN BREAST CANCER PATIENTS - USING FACT-G, SF-36 AND QLQ-C30 QUESTIONNAIRES
Authors: Nguyen Nguyen Thai Bao , Nguyen Dinh Tung , Nguyen Vu Quoc Huy
Published: March 2020

Background: The assessment and improvement of Quality of life (QoL) of breast cancer and other diseases patients have been of great concern for a long time. This research is to assessing the QoL of breast cancer patients using the popular and recommended instruments, the FACT-G, SF-36 and QLQ-C30 (including QLQ-BR23). Methods and Materials: A cross-sectional descriptive study on breast cancer patients receiving surgical, chemotherapy and radiotherapy, using FACT-G, SF-36 and QLQ-C30 to evaluate their quality of life. The assessment is mainly based on the patients’ own feelings. Results: Average age: 48.4±13.1. Most patients in the sample are from stage IIA to stage IIIB (TNM Cancer Staging, by AJCC 2010). Quality of life index using FACT-G is 60.6±5.1, using SF-36 is 46.5±11.0 in physical health and 53.1±14.8 in mental health, using QLQ-C30 is 53.1±21.0. Conclusion: The QoL assessment by using these instruments shows results mostly in average on many aspects. The screening needs to be improved for better early-detection and treatment, especially in mental care. Quality of life of breast cancer patients reasearches should be paid more attention and widely expanded.
PRIMARY HYPERPARATHYROIDISM- FOUR CASE REPORT AND REVIEW OF THE MEDICAL LITERATURE
Authors: Nguyen Thi Thu Mai , Tran Huu Dang
Published: March 2020

Primary hyperparathyroidism is an uncommon endocrinological disorder and affects any age and gender. The resulting hypercalcaemia affects multiorgan systems in the body including the bones and kidneys. We report four cases with primary hyperparathyroidism, who were diagnosed at Department of Internal Medicine of Hoan My I hospital. We also review primary hyperparathyroidism in medical literature.
RESIDUAL RENAL FUNCTION IN PERITONEAL DIALYSIS PATIENTS
Authors: Hoang Hoang Bui Bao , Le Huu Loi , Vo Tam , Tran Thi Anh Thu
Published: March 2020

Background: Peritoneal dialysis is used regularlly in treatment of ESRDs. Residual renal function (RRF) in these patients helps the adequacy of PD therapy very much. Objectives: 1. Study RRF of PD patients at Department of Nephro – Rheumatology, Hue Central Hospital. 2. Search the correlation between RRF and Kt/V. Patients and methods: 35 PD patients at Department of Nephro – Rheumatology, Hue Central Hospital. Measure RRF and Kt/V by formulars that depend on blood, urine and PD fluid samples. Results: Mean RRF of PD patients is 4.36 ± 13.8 ml/minute. There is a close correlation between RRF and Kt/V (r=0.79, p<0.01). Conclusion: RRF in PD patients correlates with Kt/V.
FOMULATION OF SALBUTAMOL SUSTAINED RELEASE TABLET
Authors:   Hau Le, Thi Thu Van Le, Van Quy Nguyen, Chat Phung
Published: March 2020

Background: Salbutamol, a highly selective beta 2 adrenoceptor agonist with bronchodilating property, is widely used for the management of chronic and acute asthma. The biological half life of drug is about 4.5 hour, hence salbutamol is given orally four times daily to maintain a therapeutic blood level. The aim of recent study was to formulate film coated sustained release tablet for 12-hour duration of action. Materials and methods: The core tablet containing salbutamol sulphate, potassium chloride and lactose were prepared using wet granulation process. The resultant tablets were coated with mixtures of ethyl cellulose and hydroxylpropyl methyl cellulose to control the release of salbutamol. Results: Three formulations of the core were chosen to fabricate salbutamol tablets and the core tablets were coated with polymer at various ratio to core weight to control the drug release. It was found that the core containing 68 mg of potassium chloride and 6 % (W/W) of polymer possessed the drug release similar to that of reference product (Ventolin CR). The drug release kinetic of the experimental product was best fit to zero order. Active ingredient was released out of the coated tablet through pores formed by disolving of hydrophyllic one in mixture of polymer in contact with medium. Conclusion: The mixture of ethyl cellulose and hydroxylpropyl methyl cellulose could be used as coating to control the release of salbutamol. The dissolution of resultant coated tablet was similar to that of Ventolin CR 4 mg. The products were ready to be assessed further by conducting stability testing and bioequivalence evaluation in human volunteers.
Glagoljaši u Splitu u 15. stoljeću
Authors: Runje Petar
Published: March 2020

U članku se iznose podaci pronađeni u bilježničkim spisima iz 15. stoljeća o knjizi na hrvatskom jeziku u osobnoj knjižnici splitskoga arhiprezbitera i o nekim svećenicima glagoljašima tada nastanjenima u gradu Splitu. Posebno je značenje tih podataka u tome što neki drugi iz srednjega vijeka koji bi svjedočili o nazočnosti i djelovanju glagoljaša u samom sjedištu Splitske nadbiskupije, nisu do sada pronađeni.
Antioxidant Characteristic of Prophylactic Hypericum Perforatum Oil Administration in a Rabbit Model of Palatal Mucosal Injury
Authors: GÜNPINAR Şadiye , ALPERAT KILIÇ Olgu , TOSUN Mehmet , FIRAT Tülin
Published: March 2020

Objective: This study was aimed to
determine the antioxidant and soft tissue wound healing properties of
prophylactic (p) application of topical Hypericum
perforatum (HP)
oil in rabbits. Materials
and Methods: Thirty-six
New Zealand albino rabbits were randomly classified as p-HP oil (test, n = 18) and p-olive oil (control, n = 18) groups. Each groups of rabbits
were topically pretreated with either HP or olive oil before the surgery. Gingival biopsies were excised and
analyzed for re-epithelialization (RE) and granulation
tissue maturation (GTM) and clinical appearance were scored for erythema, epithelial confluence and
general wound appearance on days 3, 7 and 14 after surgery. Levels of VEGF and FGF-2
were assessed
immunohistochemically. Tissue catalase (CAT) and malondialdehyde
(MDA) levels were measured using
ELISA. Results: Higher epithelial confluence (on
the 7th day) and general wound appearance scores (on the 7th and
14th days)
were determined in p-HP oil than that of p-olive oil group (p<0.05). On the other hand RE
scores did not differ between groups (p>0.05). The number of positively stained FGF-2
cells were higher in the test than that of control (p<0.05) but there were no
significant differences between the groups for the number of positively stained VEGF vessels. p-HP oil treatment increased the tissue CAT
levels and reduced the MDA levels compared to p-olive oil (p<0.05).

Conclusions: The results obtained from this study indicated that
topical p-HP oil treatment has antioxidant effects and may be used to accelerate the secondary
wound healing compared to its base, olive oil.
MATHEMATICAL MODELING OF THE DISTRIBUTION OF ARGON IN A TUNDISH WITH A MOLTEN METAL DURING FILLING
Authors: Krasnikov Kyrylo Serhiiovych
Published: March 2020

The article is devoted to the mathematical description of the process of filling an intermediate ladle (tundish) with argon, which is blown into the melt stream falling from the steel casting ladle, which is common at metallurgical plants. Metallurgical plants use an intermediate ladle to reliably supply a continuous casting machine for the melt. Also important for the tundish is the removal of non-metallic inclusions using argon. The good distribution of argon bubbles in the tundish significantly influences the removal of unwanted melt components such as hydrogen and nitrogen. Given the need for gas to escape, the melt speed in the intermediate ladle should be sufficiently low, especially near outflow holes, where melt needs to be homogeneous and slow for a high–quality casting. Conducting experiments during the operation of a metallurgical plant is undesirable, costly and is accompanied by difficulties associated with high temperature and opacity of the melt. Therefore, the experiments are often carried out in laboratories on the so-called cold models, where the melt is replaced by water, argon – by air, and the tundish – by the transparent container of the rectangular shape under the conditions of similarity. Despite the obvious advantages of such cold modeling, today most experiments are still conducted on mathematical models, which are a much cheaper and low-erroneous way of predicting the development of a given process under different conditions. Mathematical modeling of melt motion helps to select the optimal geometry of the tundish, as well as the required amount of argon and usefulness of barriers on a way of melt streams. The article proposes to use the convection-diffusion equation for the argon field and the Navier-Stokes equations – for the velocity field. The numerical solution using finite volume method is well tested and provides sufficient accuracy. In addition, this method is easily parallelized to speed up computing on modern multi-core processors. A graphical user interface software application allows you to display the status of the system on the screen for further review and adoption decisions.
МАТЕМАТИЧНЕ І ЧИСЕЛЬНЕ МОДЕЛЮВАННЯ НАПРУЖЕНО-ДЕФОРМОВАНОГО СТАНУ ЕРОЗІЙНО ЗНОШЕНИХ ЕЛЕМЕНТІВ ТРУБОПРОВІДНИХ СИСТЕМ СКЛАДНОЇ ГЕОМЕТРИЧНОЇ ФОРМИ
Authors: Doroshenko Yaroslav , Karpash Oleh , Oliinyk Andrii
Published: March 2020

Безпека і надійність трубопровідних систем є надзвичайно важливою проблемою сьогодення коли знос основних фондів багатьох трубопровідних комунікацій в Україні перевищив 90 %. Тільки своєчасна діагностика, якісна оцінка технічного стану та якісний і своєчасний ремонт дають змогу уникати значних втрат, які зумовлені аваріями. Тому дослідження напружено-деформованого стану трубопровідних систем є актуальною задачею оскільки дають змогу оцінити їх технічний стан. Особливо складною є така задача для відводів трубопроводів, які мають тороподібну геометричну форму.
Experimental investigations of text graph representation model efficiency for borrowings detection
Authors: Olena Kuropiatnyk
Published: March 2020

The paper deals with investigation of time and functional efficiency of the developed software system for text borrowings detection. Base of this system is constructive-synthesizing text graph representation model. The experiment revealed a linear relationship between the time of the text borrowing check operation and the size of the text base for comparison. The conducted experiments showed that there is a difference in the results of the checking text documents by the developed system and analogue. For its estimation the degree of functional efficiency advantage is calculated by similarly to S-estimation of efficiency of algorithms. The reasons for the difference in results are identified. Attention is drawn to obstacles in analogues use for experimental efficacy investigations.
Sources of Research Topic Generation: Lessons From Proficient
Researchers of Business Management Disciplines
Authors: France Adrian
Published: March 2020

Abstract: Journal publications are an output of research
though there is little research into the process that led to the
outcome and the lack of discussion and debate surrounding the
process leads to an allure of mysticism. This paper studies the
norms of research through investigating how successful business
researchers choose their research topics. In‑depth semi‑structured
interviews were conducted with business researchers. Generating
topic ideas by successful researchers were separated into two
general sources: ‘Professional Capacity’ and ‘Individual
Motivators’. The main Professional Capacity sources were students
and previous research. These Professional Capacity sources can be
used by an established researcher. The most valuable Individual
Motivator is to read. Researchers also revealed that they chose
topics they found intrinsically interesting rather than topics that
would necessary have a significant impact on the literature. To
achieve research and publication success, it is important to make
research part of your routine and read, attend conferences, submit
your work for review, and persevere.
POSITIVE EFFECT OF ETHICAL BEHAVIOR, CORPORATE ETHICAL VALUE, AND IDEALISM IN THE WORKPLACE
Authors: Kathelyn Kathelyn , Yustina Andi Ina , Santosa Setyarini
Published: March 2020

Accountants who work in a company that adopted an excellent corporate ethical value are believed to have a higher idealism orientation of ethics. This study empirically examines the role of ethical behavior to influence the positive effect of corporate ethical value toward an accountant's idealism. By using a web-based survey, this study spread 100 questionnaires to accountants in Indonesia. The statistical analysis that is used for this research is the Structural Equation Model (SEM) with a Partial Least Squares (PLS) approach. This study result shows that there is a positive relationship between corporate ethical value and idealism, moderate by ethical behavior.
FLEXIBILIDAD ESTRATÉGICA, TEORÍA DE OPCIONES REALES Y CONVERGENCIA CON EL VALOR ACTUAL NETO EMPLEANDO PROBABILIDADES “DEL MUNDO REAL” Y COEFICIENTES EQUIVALENTES CIERTOS.
Authors: Milanesi Gastón Silverio
Published: March 2020

El trabajo presenta un modelo para valuar decisiones de inversión aplicando la Teoría de Opciones Reales. Propone el uso de probabilidades “del mundo real” en contraposición a los clásicos coeficientes equivalentes ciertos. El método describe y traduce “con un mayor grado de intuición”, la anatomía del riesgo correspondiente a la flexibilidad estratégica del activo. Adicionalmente, la estimación de coeficientes no emplea el tipo sin riesgo. En cambio emplea tasas estimadas a través de los tradicionales modelos de equilibrio, modelos que incorporan momentos de orden superior, o simples ajustes ad-hoc sobre la tasa. Finalmente demuestra la convergencia entre la Teoría de Opciones Reales y el Valor Actual Neto.
EL COSTEO BASADO EN LA ACTIVIDAD EN LAS UNIVERSIDADES: UNA HERRAMIENTA PARA LA GESTIÓN ESTRATÉGICA Y LA CREACIÓN DE VALOR
Authors: Ficco Cecilia Rita
Published: March 2020

Ante la actual configuración de la relación estado-universidades-sociedad, las universidades nacionales deben rendir cuentas externas ante quienes tienen intereses en ellas suministrando información objetiva. Pero, además, deben desarrollar internamente procesos de planificación y control acordes a las actuales demandas. Surge entonces el problema de diseñar sistemas de información para la gestión adaptados a las particulares características de estas organizaciones.

En relación a esta problemática se ha diseñado un modelo de costos basado en la actividad para el ámbito universitario, el cual fue experimentado en la Universidad Nacional de Río Cuarto. El presente trabajo tiene como objetivo describir los aspectos generales del modelo diseñado, como así también, fundamentar la importancia que el mismo tiene, en la metodología de la cadena de valor, para el planeamiento y el control estratégico.
SINERGIA Y EMPATÍA EN LA TOMA DE DECISIONES: UN APORTE AL VALOR DE LA ORGANIZACIÓN A TRAVÉS DE LA GERENCIA ESTRATÉGICA DE COSTOS
Authors: Sader Gustavo
Published: March 2020

Este trabajo muestra dos perspectivas que interactúan en un proceso donde la información para la gestión es clave en la generación de valor de una organización. Cada perspectiva está relacionada a un elemento clave: en la que se denomina “perspectiva sinérgica”, el elemento clave es la “información” y en la denominada “perspectiva empática”, la “inteligencia del decisor”. Se enfatiza entonces en dos recursos claves: quién decide y sobre qué se decide. Este trabajo intenta relacionar ambos recursos desde dos cualidades que a entender del autor son claves (sinergia y empatía). ¿Cómo se relacionan? A través de un proceso simbiótico, continuo donde los elementos conceptuales de la Gerencia Estratégica de Costos y los ciclos gerenciales, se articulan generando información útil y brindando una visión holística y sistémica al decisor, apuntando a la prosperidad y por ende a la generación de valor a la organización.
Especificidades del proceso estratégico en Pymes Argentinas: un Estudio de Casos
Authors: Fardelli Corropolese Claudio , Diaz Daiana Valeria , Gonzalez Natalia Lorena , Szlechter Diego Fabián
Published: March 2020

En este trabajo se presentan los resultados de un estudio en el que se analiza el proceso estratégico, con eje en la articulación de los componentes explícitos y tácitos, de pequeñas y medianas empresas. Consideramos que el proceso estratégico en las pymes tiene ciertas especificidades que lo diferencian de los procesos de las grandes firmas. En el mismo confluyen recursos, capacidades organizacionales, habilidades, trayectorias empresariales y el pensamiento estratégico del empresario pyme. Estas especificidades otorgan ventajas y limitaciones en el desarrollo de las etapas del proceso decisorio en el que se definen las estrategias para la organización.

El trabajo de campo consistió en la realización de entrevistas en profundidad a empresarios pyme. Como conclusiones finales de nuestro trabajo de investigación identificamos, principalmente, un tipo de proceso estratégico que se aleja de la perspectiva tradicional del planeamiento estratégico y se acerca a un proceso centrado en el empresario pyme o dueño, que trabaja con proyectos acotados y específicos, valiéndose de cierta información y una tríada conformada por conocimiento, experiencia e intuición.
Ruralidad del empleo agropecuario en la región pampeana.
Authors: Pellegrini Jose Luis
Published: March 2020

En esta tesis se ofrece una explicación económica para la proporción de población ocupada en el sector agropecuario que es rural y su distribución espacial, en la región pampeana al comenzar el siglo XXI. Por rural se entiende que reside en campo abierto, de acuerdo a los criterios censales utilizados en la Argentina para definir a la población rural dispersa.

Se sostiene que la ruralidad del empleo agropecuario en cada área y sus alrededores depende de la importancia relativa de la agricultura y otras producciones agropecuarias, pero también de variables menos evidentes que a la postre resultan empíricamente más relevantes: los grados de urbanización del área y riqueza de la población agraria.

Se obtienen esas conclusiones mediante un análisis conceptual de los costos comparativos de organizar la transacción de trabajo agropecuario con población rural o población urbana, en tanto el lugar de residencia afecta las actividades productivas y domésticas de los trabajadores. El problema se define como de organización económica en el nivel mesoeconómico, que tiene detrás uno más elemental: el de organización de la transacción de trabajo.

Metodológicamente, en el aspecto conceptual se procede de manera abstracto-deductiva a partir de una representación estilizada del problema en cuestión, y en el empírico se realiza un estudio de corte transversal con datos censales, que culmina en un análisis econométrico espacial que no rechaza las principales hipótesis específicas deducidas.
Grupos empresarios y entidad informativa: una visión global
Authors: Marcolini Silvina , Rodriguez de Ramirez María del Carmen
Published: March 2020

La concentración empresaria es un fenómeno creciente del que participa el mundo en las últimas décadas. La globalización llega acompañada de rápidos avances tecnológicos, competitividad, apertura de mercados y acercamiento a otras culturas. En ese contexto, la formación de un grupo de empresas puede responder a diferentes objetivos y estar condicionada por distintos factores. En cualquier caso, el grupo debe preparar información contable consolidada de acuerdo con el método de la consolidación total. El procesamiento estadístico de los resultados del relevamiento empírico realizado sobre las empresas matrices argentinas cuyos títulos de capital o de deuda tienen cotización pública, evidencia las cuestiones planteadas.
Pasantías educativas y aprendizaje servicio en la formación del estudiante en Ciencias Económicas
Authors: Daffunchio Adriana , Medina Mayra Samanta
Published: March 2020

En esta nota se busca analizar a las Pasantías educativas y al aprendizaje servicio como herramientas pedagógicas par ala formación de los futuros profesionales en Ciencias Económicas
Subordinación, cooperación y coordinación entre empresas: relaciones para generar información contable.
Authors: Marcolini Silvina Beatriz , Rodriguez de Ramirez María del Carmen
Published: March 2020

La caracterización del agrupamiento empresario a partir de diferentes perspectivas teóricas nos permite identificar las posibles formas de vinculación que pueden tener entre sí, las empresas que lo componen. La doctrina contable prevé que cuando dicho grupo constituya un sujeto contable, preparará información consolidada a partir de dos concepciones teóricas: entidad y propietarios. La normativa contable en el ámbito internacional a través de los organismos reguladores, ha elaborado algunos pronunciamientos referidos a la entidad informativa. La vinculación entre teoría, doctrina y normativa nos permite exponer que cada vez que dos o más entidades conformen un grupo de acuerdo con determinadas características, independientemente de la existencia o no participaciones de capital de una en otra u otras, constituye un sujeto contable y puede convertirse en una entidad informativa si existen usuarios de la información por él generada.
Análisis económico del eslabón primario de la cadena ganadera argentina
Authors: De Batista Marianela , Durán Regina
Published: March 2020

Los cambios en el contexto nacional e internacional evidencian la necesidad de reconvertir el negocio de la ganadería bovina, una de las principales actividades de la economía argentina. En este sentido, el presente trabajo presenta un análisis económico del eslabón primario de la cadena ganadera, desde una óptica sistémica y multidisciplinaria. La metodología se inicia con un estudio de la zona bajo análisis de modo de caracterizar los sistemas productivos. Sobre la base del estudio de la relación costo-volumen-utilidad se determina la estructura de costos e ingresos, considerando: sistema productivo; tamaño del establecimiento; parámetros técnico-productivos y canal de venta. Los resultados, demuestran que a pesar de la importancia de la ganadería en la economía nacional, esta no es capaz de generar un aporte positivo a los resultados económicos de las explotaciones. Generándose el desafío de construir ventajas competitivas sostenibles, basadas en el incremento de la productividad y el desarrollo de una estructura de costos eficiente.
Estimación de la función generalizada de variancias para la Encuesta Anual de Hogares de la Ciudad Autónoma de Buenos Aires, año 2010
Authors: Cuesta Cristina Beatriz , Mari Gonzalo , Rivero Matias
Published: March 2020

La función generalizada de variancia (FGV) es un método muy difundido entre organismos gubernamentales encargados de dirigir y planificar encuestas de gran magnitud, que permite obtener de manera sencilla el error muestral de una estimación dada. Consiste en un modelo que pretende reproducir la relación entre un estimador y alguna medida de su variación, por ejemplo la Variancia Relativa (VR). Si bien pueden plantearse varios modelos para la FGV, en la práctica usualmente se consideran dos modelos muy simples (modelo lineal y modelo logarítmico). En este trabajo se explora el uso de otro modelo, basado en la regresión spline penalizada (P-spline). Se comparan dichos modelos utilizando datos provistos por la Dirección General de Estadística y Censos de la Ciudad Autónoma de Buenos Aires. Para ello se utilizarán las estimaciones de totales de características de interés provenientes de la “Encuesta Anual de Hogares” realizada por dicho organismo, correspondiente al año 2010.
Construyendo un indicador de actividad mensual para la Región Rosario
Authors: Lapelle Hernán Claudio
Published: March 2020

En este trabajo se presenta una estimación del Indicador Sintético de Actividad de la Región Rosario (ISARR) para el período 1993-2012. La misma representa un aporte a las escasas estadísticas regionales existentes. Además, la exposición detallada de la metodología empleada hace del artículo una guía para la elaboración de indicadores mensuales de actividad en otras áreas o regiones. El ISARR muestra cuatro ciclos completos desde 1993 a diferencia de la nación y provincia que sólo marcan tres, aunque presenta una buena consistencia temporal con éstas. Asimismo, el ISARR exhibe ciertos hechos estilizados de la economía argentina: la crisis del Tequila, el auge durante la Convertibilidad, la profunda crisis socioeconómica de 2001/2, la recuperación y auge postconvertibilidad y la recesión de 2008/9. Estos resultados avalan el uso del ISARR como un indicador apropiado para monitorear la actividad económica de la Región Rosario.
Enseñar en la universidad. Saberes necesarios y experiencias de formación
Authors: Pierella María Paula
Published: March 2020

Entre los años 2009 y 2010, en el marco del trabajo de campo de mi tesis doctoral, realicé una serie de entrevistas a estudiantes próximos a egresar de diferentes Facultades de la Universidad Nacional de Rosario (UNR). Me orientaba el interés por indagar los modos en que los jóvenes universitarios interpretaban la cuestión de la autoridad pedagógica. Ese estudio me permitió arribar a una serie de conclusiones sobre la heterogeneidad existente en las formas de construcción de los vínculos entre docentes y estudiantes en la universidad contemporánea. Heterogeneidad en la que incide, en gran medida, la especificidad de las culturas institucionales y disciplinares .

No obstante, en términos generales, independientemente de la facultad o carrera de pertenencia, podemos afirmar que, entre otras cuestiones sobre las que no nos detendremos aquí, los estudiantes asignaron autoridad a aquellos docentes que no sólo plantean un saber acerca de la disciplina, sino un saber sobre la enseñanza. En este sentido, recordaban especialmente a aquellos profesores que “saben y saben enseñar”.
Reconocimiento contable de los costos de activos biológicos: el caso planta de duraznos
Authors: Marcolini Silvina , Verón Carmen Stella , Goytía Marisa , Mancini Carina , Radi Diego
Published: March 2020

El costo de producción de un activo es aquél necesario para ponerlo en condiciones de cumplir con su destino o con las expectativas de la gerencia, en los términos de la norma contable local o internacional respectivamente. En los activos biológicos, la normativa local prevé la posibilidad de reconocer como activos, a los costos atribuibles al mantenimiento del mismo, aún cuando ya han comenzado a cumplir con su destino. Existe una contradicción normativa al admitir la activación de costos de mantenimiento, que se corresponden con gastos del período de ocurrencia, para el resto de los activos. La revisión desde lo agronómico, del proceso biológico de la planta de duraznos, evidencia la existencia de costos que si bien permiten que esté disponible para su uso, ocurren cuando el activo ya está en producción. Resulta necesario modificar los términos de la normativa local y analizar los procesos de desarrollo de cada activo biológico de largo plazo, a fin de lograr un adecuado reconocimiento de costos, tanto en su aspecto cuantitativo como de oportunidad. La norma internacional no considera esta alternativa.
Los asentamientos irregulares en Rosario, Argentina. Conflictos urbanos y vulnerabilidad social
Authors: Castagna Alicia , Raposo Isabel , Woelflin María Lidia
Published: March 2020

En Argentina, crecimiento y crisis alternaron en el tiempo, produciendo cambios en el patrón de acumulación e incidiendo sobre los procesos urbanos de segmentación e integración de la población. En Rosario, los asentamientos irregulares son un fenómeno que se manifiesta a partir de la década de 1930, y lejos de desaparecer producto de la aplicación de políticas del hábitat, se han convertido en una manifestación estructural que persiste y reconvierte en la actualidad. Desde los años noventa, grandes operaciones inmobiliarias han coexistido con áreas de ocupación informal sobre las que se aplican instrumentos de acción pública, intentando cambiar estas áreas e integrarlas definitivamente a la ciudad. Actualmente se priorizan inversiones dirigidas a mejorar las condiciones físicas y sociales y a trabajar el mercado del suelo para sumar estos segmentos marginales a la trama urbana formal; sin embargo, lejos se está de alcanzar una solución a la fragmentación social en base a la aplicación de políticas locales.
Asociativismo y agro: el caso de las familias productoras en Entre Ríos, Argentina
Authors: Orsini Germán , Domínguez Néstor , Serfaty Néstor
Published: March 2020

El avance de una nueva etapa del capitalismo en el agro argentino en las dos últimas décadas se tradujo en la desaparición de miles de productores, la mayoría de carácter familiar. En este contexto adverso es menester conocer si las familias productoras recurren a prácticas asociativas a modo de estrategia frente a las recurrentes crisis. Este trabajo busca identificar cuál es la relación entre la forma social de producción familiar y las prácticas asociativas en Entre Ríos, Argentina. Para ello se construyó la categoría analítica Familia Productora Agraria a partir de tres variables: gestión de la propiedad, forma jurídica y tipo del trabajo. Se utilizó como fuente, información procesada de los Censos Nacionales Agropecuarios. En las conclusiones se puede observar, en primer lugar, una gran presencia dentro de la estructura agraria de familias productoras, las cuales representaban el 77% de las explotaciones agropecuarias relevadas en el 2002 y ocupaban una tercera parte del espacio rural entrerriano; por otro lado, se comprueba que la mayoría no práctica el asociativismo y si lo práctica está ligado a instituciones tradicionales como cooperativas y asociaciones gremiales. Por último se visualiza que sólo el 16% de las familias productoras realizaban prácticas asociativas frente a un 25% de las explotaciones no familiares, poniendo en cuestión la relación entre agricultura familiar y asociativismo.