bluuebunny/crossref_metadata_2025 huggingface dataset:
The method of extracorporeal resection of the kidney in conditions of pharmaco-cold ischemia in kidney cancer with orthotopic renal replantation
Authors: Miroshkina Irina V. , Baytman Tatyana P. , Polotbek uulu Zholboldu , Oganyan Vardan A. , Chevina Alina A. , Raguzina Vlada Yu. , Simonov Anton D. , Chzhao Alexey V. , Pranovich Alexander A.
Published: February 2022

BACKGROUND: Increasing the effectiveness of the treatment of patients with kidney cancer is one of the main problems of oncourology. In its solution, great importance is attached to the development of new surgical technologies.
AIM: The aim of the study to evaluate the results of extracorporeal kidney resection in conditions of pharmaco-cold ischemia with orthotopic renal replantation in kidney cancer patients. Our study is aimed at assessing the results of extracorporeal resection of the kidney under pharmaco-cold ischemia with orthotopic replantation of renal vessels in patients with kidney cancer.
MATERIALS AND METHODS: 44 patients [of them, 70.5% (n = 31) men and 29.5% (n = 13) women] with kidney cancer were recruited in a study. All patients were treated between 2012 and 2021. The mean age of patients was 55.92 12.6 years. The stage was determined using the TNM system: pT1a-3bN0M0-1 G1-3. 75% (n = 33) of patients had stage pT1a1b; 11.4% (n = 5) pT2a2b, one patient was present with multiple lesions; 13.6% (n = 6) pT3a3b, one patient had up to 15 lesions in a single kidney. Two previously operated patients had cancer of a single kidney with intraluminal invasion. The mean R.E.N.A.L nephrometric score was 10.32 1.34.
RESULTS: The duration of the surgery was 402.07 83.21 minutes. The duration of cold ischemia was 149.9 53.1 minutes. Blood loss 751.1 633.6 ml. Renal vascular replacement was performed in 13 patients. Postoperative complications II degree according to Clavien Dindo were detected in 36.6% (16) of patients. There was only one lethal outcome due to mesenteric thrombosis at day 4. Disease progressed in 6.8% (n = 3) of cases. The GFR level before surgery was on average 72.3 16.8 ml / (min 1.73 m2), in the early postoperative period 58.7 28.3 ml / (min 1.73 m2), 1 year after surgery 69.4 26.2 ml / (min 1.73 m2). One year after surgery it was 69.4 26.2 mol/l. The follow-up period ranged from 8 to 86 months (on average 58.7 19.1 months).
CONCLUSIONS: This technique is effective in patients with multiple foci, centrally located and large tumors, for hard-to-reach localizations, as well as in patients with the impossibility of intracorporeal pharmaco-cold ischemia, peculiarities of organ blood supply.
Extracorporeal magnetic stimulation in urology
Authors: Amdiy Refat E. , Al-Shukri Salman Kh. , Kuzmin Igor V. , Makeev Vladimir A. , Sozdanov Petr V.
Published: February 2022

The review article is devoted to the usage of extracorporeal magnetic stimulation in the treatment of urological diseases. Based on the analysis of scientific publications in the PubMed, Medscape, Google Scholar databases, modern data on the mechanism of the therapeutic effect of this method, the method of performing the procedure, the results of clinical studies of its effectiveness in the treatment of urinary incontinence, bladder hypoactivity, chronic pelvic pain syndrome, erectile dysfunction and premature ejaculation are presented.
Antioxidant therapy of male infertility in patients with varicocele
Authors: Krupin Valentin N. , Nashivochnikova Natalya A. , Uezdnyj Mikhail N.
Published: February 2022

BACKGROUND: The study of the relationship between the presence of varicocele and male infertility is the subject of numerous studies, while many aspects of impaired spermatogenesis remain unclear. It has been established that after surgical treatment of varicocele, fertility is not restored in a significant number of patients. In this regard, the search for new and pathogenetically substantiated methods of treating such patients seems to be very relevant.
AIM: To evaluate the effectiveness of antioxidant therapy in spermatogenesis disorders in men with varicocele, prescribed both in combination with surgery and as monotherapy.
MATERIALS AND METHODS: Three groups of infertile men with varicocele were observed, who were treated with Speroton (a complex containing folic acid, L-carnitine, zinc, selenium, vitamin E) 1 sachet once a day, the duration of the course was three months. Patients of the first group (n = 43) were prescribed the drug after the Ivanissevich operation, the patients of the second group (n = 37) received antioxidant therapy during three months before the Ivanissevich operation and continued for three months after it. Patients of the third group (n = 21) did not undergo surgery, but received only antioxidant therapy for six months. The results of the combined treatment and conservative therapy with Speroton were compared with the results of treatment of 65 infertile patients who underwent only Ivanissevichs operation.
RESULTS: In patients with varicocele with initially pathological parameters of ejaculate, who were prescribed drugs with antioxidant properties in the postoperative period as an adjuvant treatment for 3 months, in 76.7% of cases there was a change in spermogram indicators towards improvement. The most significant changes were observed six months after the operation and subsequent adjuvant therapy. The indicators characterizing sperm motility underwent more noticeable changes. In patients who received only antioxidant therapy for six months, in all cases, there was a statistically significant (p 0.001) improvement in sperm motility, which persisted for six months and exceeded these changes in groups of patients with adjuvant therapy and neo- and adjuvant therapy.
CONCLUSIONS: The results obtained allow us to conclude that there is no need for surgical treatment for varicocele in order to treat male infertility, since the operation itself can negatively affect the state of spermatogenesis, and conservative antioxidant therapy leads to better results in infertility treatment than the performed operation or any combination of it with antioxidant therapy.
Photodynamic methods of treatment of nonmuscular-invasive bladder cancer
Authors: Kasymov Bahtijar G. , Shanazarov Nasrulla A. , Muratov Timur M. , Daniyarova Gulnur D. , Zhumakayev Akylbek M. , Kyzlasov Pavel S. , Kazhera Anastasia A. , Slesarevskaya Margarita N. , Kuzmin Igor V. , Al-Shukri Salman Kh.
Published: February 2022

The review article is devoted to the application of photodynamic therapy for non-muscle invasive bladder cancer. The data on the mechanism and pathogenetic bases of the application of this method of treatment, the method of its implementation, the advantages and disadvantages of the photosensitizers and the results of clinical studies are presented. It has been shown that intraoperative photodynamic therapy significantly reduces the rate of recurrence of bladder cancer after transurethral resection, including in patients with carcinoma in situ and multifocal growth of urothelial tumors.
Purulent-inflammatory processes in the area of the hip joint in traumatological and orthopedic patients: microbiological aspects
Authors: Pkhakadze T. Ya. , Urazgildeev Z. I. , Malovichko V. V. , Okropiridze G. G. , Savostyanova O. V.
Published: February 2022

Microbiological studies of operative materials (tissues and pyogenic masses) from 139 patients (88 patients with suppurative in the surrounding tissues of hip implants and 51 patients with chronic osteomyelitis of proximal femur) were performed. Two hundred sixteen strains of microorganisms were detected. In both groups of patients Gram-positive aerobic bacteria prevailed 58,35 and 57%), respectively. Detection rate of Gram-negative aerobic microflora (14.75 and 15.2%o) and anaerobic bacteria (26.9 and 27.8%) was practically equal. The results of the study of antibiotics resistance enabled to determine the antibacterial drugs of choice for the treatment of pyo-inflammatory process.
Revision hip arthroplasty
Authors: Nuzhdin V. I. , Trotsenko V. V. , Popova T. P. , Kagramanov S. V.
Published: February 2022

From 1990 to 2000 238 revision hip joint replacements were performed at Joint Replacement Department of CITO. Both cement and cementless implants as well as in case of need allografts in the form of bone chips and spongeous bone were used. Technique peculiarities of revision operations for Sivash and Compomed implants replacement are described. The working time for Com- pomed implants was detected to be up to 5 у ears, for Gerchev implants up to 7 years and for Sivash implants 10 years and more. In revision replacement the following complications occurred: lethal outcome 2 cases, acute myocardial infarction in early postoperative period 1 case (recovery), deep suppuration 1 case (implant was removed), thromboembolia of small branches of a. pulmonalis 3 cases (recovery), paresis of fibular portion of n. ischiadicus 5 cases (complete function restoration), dysbacteriosis during antibacterial therapy 2 cases (recovery). Results of treatment were evaluated in 140 patients in the periods from 3 months to 10 years. In 139 cases complete or almost complete restoration of operated limb function was clinically noted. In 37 out of 139 patients signs of bone resorption around the cup and stem of implant were detected roentgeno- logically.
Evaluation of psycho-vegetative disorders in cervical pain syndromes during treatment using manual therapy
Authors: Galliamova A. F. , Mashkin M. V. , Novikov Yu. O.
Published: February 2022

Psychovegetal disturbances resulted in the aggravation of blood supply of highest vegetal centers due to involvement of pathologic process in a. vertebralis and its sympathic plexus significantly affected the manifestation of cervical pain syndromes. Complex examination of 124 patients with cervical pain syndrome was performed to study the influence of manual therapy. Clinical, neuro- orthopaedic, radiologic, miotonometric and rheographic methods were used. Manifestation and dynamics of psychovegetal disturbances were studied using pulsometry, psychologic tests and questionnaires. Manual therapy as well as correction of biomechanic disorders were detected to relieve psychovegetal changes and to be a pathogenetic curative method.
Dynamics of synovitis activity after intraarticular administration of xefocam in patients with rheumatoid arthritis
Authors: Fedina T. P. , Olyunin Yu. A. , Pushkov O. V. , Apenysheva N. P. , Balabanova R. M.
Published: February 2022

The aim of the study was to assess the efficacy of intra-articular injection of lornoxicam (xefocam, Nycomed) in patients with rheumatoid arthritis. Xefocam was injected into knee joints of 15 patients with rheumatoid arthritis, 8 mg once a week for the period of 3 weeks. The following parameters were assessed: pronouncement of arthralgia, joint tenderness at palpation, circumference of knee joint on the level of the upper patellar margin. Prior and post treatment ultrasonography and thermography were used. Significant clinical improvement was observed in 11 patients. In 3 cases the dynamics was less positive and in 1 patients the effect of single dose drug injection was preserved for less than one week. Arthralgia manifestation (p0.01), joint tenderness at palpation (p0.01) and joint circumference (p0.05) showed reliable decrease. Ultrasonography showed reliable decrease the synovial membrane thickness. Xefocam injection could be successfully used to suppress moderate inflammatory joint changes in patients with rheumatoid arthritis when there are no strict indications to local steroid therapy.
Shoulder-costal dissociation
Authors: Zolotov A. S.
Published: February 2022

The term "scapular-costal dissociation" (literally - separation) appeared relatively recently [4]. It means a traumatic rupture of the scapular-costal junction with damage to the muscles, ligaments, the collarbone or its joints, the main blood vessels and the brachial plexus. Only the skin remains intact. In this regard, the second name of this injury is closed traumatic amputation of the scapula [1]. This injury occurs infrequently, mainly in road traffic accidents. Many victims die at the scene. Most authors have only a few clinical observations of scapular-costal dissociation, so each case of such damage is of particular interest.
Acroosteolysis (Jackey syndrome): analysis of clinical observation
Authors: Chernov A. P. , Pankratov A. S. , Ogurtsov D. A.
Published: February 2022

Acroosteolysis is a rare congenital disease of the musculoskeletal system, first described by Harnasch in 1950. The disease is hereditary. Sporadic cases of the disease are sometimes observed. Men are affected 2-3 times more often than women [1].
A case of successful treatment of a patient with severe catatrauma
Authors: Levichev E. A.
Published: February 2022

Cranioabdominal injury is characterized by a simultaneous disorder of the higher regulatory (brain) and executive (abdominal organs) systems. The condition of patients with these types of injuries is much more severe than with an isolated abdominal injury. If with a severe isolated abdominal injury, traumatic shock develops in 61% of the victims, then with a combined cranioabdominal injury - in 89%. Simultaneous damage to the organs of the abdominal cavity and the skull introduces its own characteristics into the diagnosis and treatment of both abdominal and craniocerebral trauma.
Yu.O. Novikov Dorsalgia Publishing house "Medicine", Moscow, 2001. 160
Authors: Tsykunov M. B.
Published: February 2022

A monograph by Professor Yu.O. Novikov "Dorsalgia", dedicated to one of the urgent problems of practical healthcare - the diagnosis and treatment of back pain. The book reflects the ideas of modern researchers about this problem, highlights the issues of etiology, pathogenesis and classification, the influence of adverse factors on the course of the disease. The publication is illustrated with 68 figures and 25 tables, which greatly facilitates the perception of the material.
A decade of experience with microsurgical discectomy
Authors: Aganesov A. G. , Musalatov H. A.
Published: February 2022

Ten years experience in microdiskectomy for the treatment of degenerative spine diseases (about 900 patients) is presented. Seven hundred and seventeen patients have been operated on by traditional W.Caspar technique and 21.4%) out of them required not only diskectomy but radiculolysis, resection of the arch margins and posterior longitudinal ligament. In some patients side by side with microdiskectomy, spondylodesis via interarch approach using CAC system combined with transpedicular system USS (AO) was performed. The same technique was used in patients with lumbar vertebra spondylolisthesis. Positive results were achieved in 88.2% of cases.
Evaluation of the results of treatment of patients with pelvic trauma
Authors: Aghajanyan V. V. , Milyukov A. Yu. , Pronsky A. A. , Mikhailov V. P. , Petushenko K. V.
Published: February 2022

Retrospective analysis was performed to evaluate the long-term results associated with the use of various methods for the treatment of pelvic injury. There were 210 patients who were evaluated using 2 methods: subjective assessment according to Majeed score and objective assessment using optic topography (45 patients). Data obtained showed that in the group of patients in which treatment methods were chosen depending on both the severity of pelvic injury and severity of patients condition the reliably higher percentage of good and excellent results were achieved by the time of discharge as well as at 1 year follow up. Complex evaluation offunctional treatment results optic topography examination of pelvis allowed to define the degree of adaptive capacity of loco-motor system and possibility of correction of the revealed disturbances.
Meeting of the main pediatric orthopedic traumatologists of Russia: "Actual issues of pediatric traumatology and orthopedics"
Authors: Malakhov O. A. , Pozdnykin Yu. I. , Solovyov K. S.
Published: February 2022

In accordance with the Plan of the main organizational measures of the Ministry of Health of Russia for 2002 (paragraph 7.46) and the Directive of the Ministry of Health of Russia No. 594-U dated 15.04.02, on May 29-30, 2002 in Svetlogorsk (Kaliningrad Region) a meeting of the main pediatric orthopedists-traumatologists on topic "Actual issues of pediatric traumatology and orthopedics". It was organized by the State Research Institute for Children's Orthopedics. G.I. Turner (Director - Prof. Yu.I. Pozdnikin), GUN Central Research Institute of Traumatology and Orthopedics. N.N. Priorov (Director - Academician of the Russian Academy of Medical Sciences S.P. Mironov) and the Health Department of the Kaliningrad Region (Head - E.M. Krepak). The meeting was held under the patronage of the Governor of the Kaliningrad Region V.G. Egorov, who addressed the participants with a welcome address.
Features of changes in protein metabolism in patients with polytrauma depending on the timing of surgical treatment of injuries of the musculoskeletal system
Authors: Agadzhanyan V. V. , Ustyantseva I. M. , Makshanova G. P. , Petukhova O. V.
Published: February 2022

The evaluation of the peculiarities of protein metabolism changes depending on the terms of surgical treatment of the loco-motor system injuries was petformed in patients with polytrauma. It was shown that plasma fibrinogen increase, posttraumatic metabolic azotemia, i.e. increase of blood urea and creatinine levels, decrease of total protein level were present in all patients. In the same time disproteinemia, i.e. decrease of albumin levels and increase of globulin fractions (more significantly alpha-1 and alpha-2 globulins) was noted. In contrast to the delayed treatment early surgical intervention was accompanied by redistribution of the fraction composition of proteins in a form of the earlier normalization of the relative quantity of alpha-1 and alpha-2 globulins. This is an evidence of the plastic exchange restoration and possibilities of compensatory responses of the organism.
Chest defects and their treatment
Authors: Malakhov O. A. , Rudakov S. S. , Likhotay K. A.
Published: February 2022

The experience in treatment of 69 patients with funnel and 5 with pigeon thorax is presented. Patients over 14 years prevailed. At thoracoplasty radical subcartilagenous resection of the deformed costal cartilages was compulsory. In tunnel thorax sternocostal complex was fixed by tantalum brackets using original suturing device, Paltia plate and transfer of xiphoid process on the posterior sternum surface. In pigeon thorax Ravitch-1 operation was performed. In 76%) of patients right hemothorax that might be associated with patients age and use of suturing device was noted. Authors did not consider the opening of the right pleural sheet to be serious complication believing that it could be an appropriate means for surgical zone drainage. Use of such thoracoplasty techniques enabled to achieve good immediate and long term (up to 10 years) results in 98.6% of patients.
REGIONAL ANALYSIS OF THE PACIFIC ALLIANCE COUNTRIES ON THE RELATIONSHIP BETWEEN INCOME INEQUALITY AND SOCIAL CAPITAL
Authors:   Faculty of Management and Accounting, University of Veracruz, Xalapa, Mexico, Bolaños Perez Nalleli Patricia , Saucedo-Acosta Edgar J.
Published: February 2022

Social capital is considered a productive resource for societies. The increase in social trust is usually related to both economic growth and a reduction in inequality. In Latin American countries, and particularly the economies that belong to the Pacific Alliance, the relationship between social capital and income inequalities has not been studied at regional level. The paper aims to analyze whether social capital impacts income inequality in the case of the Pacific Alliance regions. Dynamic panel data models were used, covering 72 regions during the period 2002-2011. The results show that the decline in generalized trust and congress trust impacts negatively income inequality, while government trust, police trust and company trust have not effect.
DEVELOPMENT OF ECONOMIC THEORY – FROM THEORIES OF ECONOMIC GROWTH AND ECONOMIC DEVELOPMENT TO THE PARADIGM OF SUSTAINABLE DEVELOPMENT
Authors:   Faculty of Business, Management and Economics, Latvia, University of Latvia, Pelsa Inese , Balina Signe
Published: February 2022

Rapid economic growth is a relatively recent phenomenon, which has been examined since the end of the 18th century. In the scientific literature researchers use the concept of “economic growth” and “economic development” when analyzing economic processes. “Economic growth”, as defined by Paul M. Romer occurs whenever people use resources and rearrange them in more valuable ways. Thus, economic growth means an increase in a real national income / national output. In contrast, economic development is an improvement of the quality of life and living standards, e.g. improvement of literacy, life expectancy, and approach to environmental issues. Economic development encircles a wider range of metrics than just gross Domestic Product (GDP) per capita, it is about actual standard of living, level of environmental standards, availability and quality of housing and other aspects. The article analyzes, compares and evaluates theories of economic growth and economic development in the context of sustainable development.
SUBLIMINAL MESSAGES IN ADVERTISING: DO THEY REALLY WORK?
Authors:   University Department of Professional Studies, University of Split, Croatia, Borovac Zekan Senka , Zekan Ivone
Published: February 2022

Subliminal messages appear in movies, commercials, music videos, and even cartoons. These are hidden signals inserted into advertising messages sent to a target audience to influence their subconscious behaviour. Such advertising is often considered unethical and, in certain types of advertising, even forbidden by law. Most research to date indicates that people do, in some way, perceive subliminal stimuli that can have an impact on their behaviour. Subliminal messages are viral and are used to manipulate consumers. However, most human psyche researchers are still inclined to think people cannot be persuaded on an unconscious level to behave in a way they would not consciously act. How crucial the influence of subliminal messages is for behaviour has not yet been sufficiently explored. The main goal of this paper is to determine whether people are aware of the existence of subliminal messages in the media and media manipulations and do they find them ethical. An online survey was conducted to assess the respondents' awareness, attitudes, and beliefs regarding subliminal advertising. The results show that the understanding of subliminal perception related to instinct and emotion is evident. The contributions will help both; marketing managers when deciding should they use subliminal messages in their advertising and consumers when deciding if they want to purchase a specific product.
STRATEGIC DEVELOPMENT OF ASTROTURISM IN THE REPUBLIC OF CROATIA – COMPARATIVE ANALYSIS
Authors:   Department of Economics and Business, University of Dubrovnik, Dubrovnik, Croatia, Vrdoljak Raguž Ivona , Krajnović Aleksandra , Hordov Monika
Published: February 2022

The paper investigates the issue of strategic development of a new selective form of tourism that is growing in many countries around the world named astrotourism. The issue of light pollution is also considered, given that a clear starry sky is a fundamental prerequisite for the development of this selective form of tourism. The aim of this paper is to investigate the level of development of astrotourism in the Republic of Croatia. For this purpose, a comparative analysis was performed targeting selected astrotourist destinations - the so-called Dark-Sky Parks in Croatia and Europe, as well as a research focusing on the geographical distribution and number of certified sky parks in the world. Certified Dark-Sky Parks are typical astrotourism destinations that meet all the prerequisites for its development, and are awarded the official certificate issued by the IDA - International Dark-Sky Association, as the world's umbrella institution dealing with light pollution. Observatories have a special role in the development of astrotourism, so the proposed paper presents an overview of observatories in Croatia that are focused on this type of activities. The paper aims to sensitize the scientific and professional public regarding the issue of light pollution, but also to encourage further research and expert discussions relating to this topic. Astrotourism combines different components and functions – a scientific and a recreational one, but also a very important ecological and educational function, encouraging special discussions and proposals focusing on solutions for the sensitive but still insufficiently researched area of light pollution, inadequate public illumination, as well as other “unhealthy” forms of illumination.
NEW TENDENCY OF ECONOMIC AND FINANCIAL CRIME IN THE CONTEXT OF DIGITAL AGE. A LITERATURE REVIEW
Authors:   Department of Finance, Faculty of Economics and Business Administration, Babes-Bolyai University of Cluj-Napoca, Romania, Brici Iulia
Published: February 2022

This paper wraps together two big concepts. First of them is the economic and financial crime and the second one is the digitalization. Each one of them has its own sub-components. The economic and financial crime can be split in: corruption, shadow economy, money laundering or cybercrime. Also, the digitalization can be explained as being related to smaller components, such as: connectivity, use of internet or digital public services. We tried to identify the relationship between these two concepts. As time goes on, we notice that the classical methods of economic and financial crime are at the same level as they were in the past, but digitalization is increasingly making itself comfortable in the field, which is why these types of crime methods are blooming. The subject provides a long-term research because of the technological development. This literature review study paves the way for more extensive research in the form of an empirical research, in order to statistically identify which phenomenon affects the other and how it is actually happening.
DIGITALISATION AND NEW TRENDS IN TRAVEL DISTRIBUTION
Authors:   Direct Booker d.o.o., Dubrovnik, Matešić Antonio , Pavić Marijana , Mihajlović Iris
Published: February 2022

This paper seek to understand the role of new technologies on transformation processes of special areas of business of travel intermediaries even emerging new entities that collaborate with both poles of tourism demand. Special attention is payed to results of modification of distribution channels to be competitive in online travel market. Softwer as channel manager is more than a tool, it is emerging as core intelligence that manage time, impacting on benefits from converegence. New technologies allowed new digital platforms (Booking, Airbnb, Expedia) making travel easier. The preferences of the postmodern tourist extend beyond the streamlined and impersonal experiences, services and products. Driven by the ambition of deviating from the beaten track, new generations of travellers are converging on digital platforms to retrieve recommendations and information from fellow travellers and local residents,i.e. sources other than traditional travel intermediaries. The COVID crisis has triggered a number of changes in the world of rental accommodation. Some of these changes are flexible cancellations, new market prices, and shorter booking window. High expections make preassure on attnders in channel of distribution. There is an even greater emphasis on cleanliness, privacy and security. At the end of the research, the results speak in favor of exceptional impact of new technology on business development as well as the role that human potential has in acquiring digital skills through education and training and providing their own tools or products that facilitate business. This paper consider sociological, economic and cultural dimension that impact on behavior of users of digital platforms are formulated to support previously incompatible ideas, like (1) models of economic systems, relationships); cultural and moral perspectives on human coexistence (negotiation, lifestyle, stewardship, prosocial behaviour/altruism, collaborative symbiosis and; ideas of efficiency and enhanced value creation.
SPECIFICITIES OF SATISFACTION AND MOTIVATION OF EMPLOYEES IN THE STATE-OWNED ENTERPRISES: THE CASE OF CROATIAN STATE-OWNED RAILWAY FIRM
Authors:   Polytechnic of Rijeka, Croatia, Tomljenović Ljerka , Hirnig Saša , Softić Alen
Published: February 2022

In modern business circumstances in all types of organizations it is imperative to have motivated employees and use their full potential for the benefit of the organization. According to previous research, motivation and productivity are positively correlated, but employee motivation in state-owned enterprises differs from the private sector. Organizational characteristics of state-owned enterprises such as rigid structure, hierarchical authority, emphasizing the status quo, the absence of specific organizational goals, can have negative effects on job satisfaction and employee motivation. The empirical part of this paper consists of the results of a survey of employee attitudes related to satisfaction and motivation in their workplaces. Motivational factors are examined on a sample of 134 employees of the one of the Croatian state-owned railway firm. The aim of this paper is to further clarify the specificities of motivational factors in state-owned enterprises and to provide some guidelines that will help the management structure in managing human resources in state-owned enterprises.
Design and development of a novel multichannel data acquisition system using labview for an automobile air conditioning application
Authors: SHALGAR Sandeep , BINDU Rupa
Published: February 2022

To sustain in the ever-changing environment and to combat the atmospheric effect, development of a highly efficient and an environment friendly air conditioning system which can run in parallel or as an alternative to an existing vapor compression system is the need of the hour and such novel hybrid air conditioning system are under development today. For the parameters attribution mapping of such novel hybrid air conditioning system, todays commercially available data acquisition systems (DAS) need to be customized to the requirements of addition of sensor nodes and their integration with triggering mechanism for actuation of devices for its programmed operation. Therefore, this paper describes the design and development of novel multichannel data acquisition system (NMDAS) for automobile air conditioning application. The details of the hardware design, software design, error analysis and testing of the NMDAS are presented. The proposed NMDAS uses PLC module DVP16SP configured with analog reader DVP 04TC for temperature measurement at 32 nodes and DVP04AD for pressure or humidity measurements at 8 nodes. The triggering circuit for activation of the relay is enabled using NI LabVIEW user interface and PLC data. The output of the NMDAS is integrated with processor by RS 232 port for data storage and processing. The error analysis of temperature, pressure and humidity measurements are done by comparing with reference calibration standards. The average thermal stability of the temperature sensors over the operating range of -5˚C to 150˚C is 0.0015°C. The average accuracy of pressure transmitters for operating range of pressure 0 to 40bar is estimated 98.219%. The minimum error in the output current is 0.375% and maximum error is 7.125% over relative humidity span of 0%RH to 100% RH respectively. The proposed NMDAS is used for testing of the novel hybrid air conditioning system of automobile during development stage and is found expedient.
Mini-channel heat exchanger optimization using genetic algorithm and multiple-criteria decision making
Authors: SUBASI Abdussamet
Published: February 2022

This study aims to apply an integrated optimization approach that combines Multi-objective Optimization (MOO) and Multiple-criteria Decision-making (MCDM) to optimize a multiport mini-channel having 2D sawtooth micro fins under laminar, transitional, and turbulent flow conditions. Water was considered as working fluid. The Reynolds number (Re), fin height (Hf), fin width (Wf), the number of micro-fins in each mini-channel (N), and the distance between the successive fins (S1) were selected as design and flow parameters and the Nusselt number (Nu) and the Poiseuille number (Po) were selected as objective functions. A Genetic Algorithm based MOO study was conducted using the correlations available in the literature aiming to find the optimum values of design and flow parameters that maximize Nu and minimize Po. Then, the VIsekriterijumska Optimizacija I Kompromisno Resenje (VIKOR) method was employed to help designers to select an optimum design among the Pareto optimal solution set which is the output of MOO. Finally, the optimization results obtained were compared with those obtained by the 1st Law of Thermodynamics based Performance Evaluation Criteria (PEC). The advantages and disadvantages of these methods were discussed in detail. It is revealed that the integrated approach is a more comprehensive and flexible approach that also covers the results of PEC.
Heat and mass transfer in stagnation point flow of cross nanofluid over a permeable extending/contracting surface: A stability analysis
Authors: BASH H. Thameem , SIVARAJ R
Published: February 2022

This work aims at examining the thermophoresis and Brownian motion characteristics on the stagnation point flow of Cross nanofluid over a permeable stretching /contracting surface. Flow equations are modelled by means of the Buongiorno nanofluid model. The transformed non-linear fluid transport equations are solved numerically through Runge-Kutta Fehlberg (RKF) approach. The temporal stability test is executed to reveal the behaviour of dual solution that arises for various initial guesses. To validate the present model, first and second solutions are compared with earlier published works which found good agreement. The fluctuations of velocity, heat and mass transfer distributions are scrutinized through the graphs with active parameters such as Wessienburg number, Brownian motion, Eckert number, and thermophoresis. The results exposed that the Brownian motion declines the rate of heat transfer for the first solution. Cross nanofluid velocity amplifies by rising Weissenberg number. By the impact of Eckert number, the second solution has a higher magnitude than the first solution. For the first solution, the cross nanofluid velocity rises when increasing the suction/injection parameter.
Thermal analysis on the impact of spray charactristics on evaporative cooling process
Authors: AMOLI Behzad Siavash , AJAROSTAGHI Seyed Soheil Mousavi , SEDIGHI Kurosh , DELAVAR Mojtaba Aghajani
Published: February 2022

In hot and dry climates, evaporative cooling of the air by water spray can be applied in several requirements, such as evaporative condensers which the airflow is precooled by the water spray before it reaches the condenser. The interaction between water droplets and the air is a complicated two-phase flow that is affected by the several parameters. Here, an Eulerian-Lagrangian 3D model was developed to investigate the influence of important parameters on spray cooling performance in a rectangular duct. The evaluated parameters include the number of nozzles, inlet air flow rate, and spray water flow rate. The results represented that growth in the number of nozzles causes a reduction in the spray cooling efficiency. Thi s is due to decrease of droplets retention time within the duct by increasing the number of nozzles at a constant total spray flow rate in the cases. The maximum and minimum spray cooling efficiency belong to the cases with one nozzle at water flow rate of 20 l/h and four nozzle at water flow rate of 5 l/h, respectively. The difference between spray cooling efficiency at 3 and 4 number of nozzles is less than 1.8%. Moreover, increasing the air flow rate from 0.5 l/h to 2 l/h (by 300%) makes a decrease in the spray cooling efficiency up to 58.6%.
Simulation of turbulent convective heat transfer of γ-al2o3/water nanofluid in a tube by ann and anfis models
Authors: NAZARİ Roghaye , BEİKİ Hossein , ESFANDYARİ Morteza
Published: February 2022

In order to modeling and predicting heat transfer coefficient in na nofluids, art ificial neural network (ANN) and Adaptive Neuro-fuzzy Inference system (ANFIS) were used in this study. In ANN and ANFIS, Input data are Reynolds number and nanoparticles volume fractions, and output data is heat transfer coefficient. Both of them could predict very well, and there is good agreement between experimental data and predicted data. In ANFIS coefficient of determination (R2), average relative error and mean square error for train data are 0.99, 8.9×10–5 and 6.5476×10–5, respectively, and for test data are one, zero and zero. According to results, by increasing the Reynolds number and volume fractions, the heat transfer coefficient increases. For base fluid in Re = 16300, heat transfer coefficient is 10961.38 W/m2K, and for volume fraction 0.135, heat transfer coefficient is 13947.72 W/m2K, therefore, heat transfer coefficient of nanofluids increased 1.27 time compared to that of base fluid. Results obtained from ANFIS are reliable, and can be used in prediction. Also, for ANN, ARE, MSE and R2 value are, –0.003, 6.38264×10–5 and 0.99, respectively. So, there is good agreement between experimental data and ANN results too. According to errors, can conclude ANFIS is slightly better than ANN.
Pedoenvironments driving the monodominance of Peltogyne gracilipes (Leguminosae) in the Northern Amazon, Brazil
Authors: Angulo Villacorta Carlos Darwin , Da Silva Carvalho Lidiany Camila , Nascimento Marcelo Trindade , Barbosa Reinaldo Imbrozio
Published: February 2022

Monodominance is unusual in the tropics when compared to the high diversity of tropical forests. Peltogyne gracilipes (Leguminosae) is a deciduous tree species that forms monodominant forests in the Brazilian Northern Amazon region. Initial research confirmed that P. gracilipes monodominance was associated with higher soil magnesium content, while recent studies have indicated a larger number of variables, suggesting a more complex hydro-edaphic habitat. As such, the present study aimed to describe the hydro-edaphic habitat (pedoenvironment) where P. gracilipes is monodominant. Edaphic and topographic variables (drainage proxy) were used in a forest inventory conducted in 129 sampling plots. Trees with a stem diameter greater than 10 cm were analyzed. Aboveground biomass was used as a descriptive variable of the different habitats in the study area. A total of 3041 individuals were sampled (298 P. gracilipes). Multivariate analysis demonstrated that the highest P. gracilipes abundance occurred in poorly drained (seasonal flooding) low-altitude habitats (
Exportaciones de cerezas en Argentina: el rol de la coordinación público-privada
Authors:   BID Invest, Jaureguiberry Florencia , Tappatá Mariano
Published: February 2022

El crecimiento exponencial de las exportaciones de cerezas en Argentina en los últimos años se fundamenta tanto en factores externos como internos al sector. Las buenas condiciones del mercado global fueron acompañadas por la reconversión de empresas y por el desarrollo de mecanismos de coordinación entre las instituciones públicas y privadas. Este trabajo se enfoca en dos elementos internos al sector más relevantes para explicar el boom exportador. Por un lado, se describe el proceso de entrada de nuevos jugadores verticalmente integrados y la modernización tecnológica de los productores tradicionales. Por otro lado, se detallan los mecanismos institucionales que favorecieron la coordinación entre las instituciones públicas y privadas, y su rol para acompañar y potenciar el proceso de reconversión sectorial. En particular, la Cámara Argentina de Productores de Cerezas Integrados (CAPCI) tuvo un rol crítico en la coordinación de actividades entre las empresas y los gobiernos provinciales y nacional para la apertura del pujante mercado chino y la generación de otros bienes públicos. A pesar de las reformas internas y del constante aumento de la demanda global de cerezas de contra-estación, la competitividad internacional del sector se encuentra muy vulnerable. La falta de financiamiento, la inestabilidad de las políticas de Estado, así como también a la legislación laboral, y la política tributaria y comercial del país ponen en peligro nuevas inversiones y la expansión del área cultivada.
Las exportaciones de papa en Argentina: estudio de caso a partir de la instalación de una empresa líder en el corazón de la producción de papa en el sudeste de la provincia de Buenos Aires
Authors: Castello Héctor , Ferraro Carlo , Paz Josefina , Rojo Sofía , Yangosián Marcelo ,   BID Invest
Published: February 2022

Este trabajo analiza el desarrollo de nuevas exportaciones agroindustriales en la Argentina, a partir de la instalación a mediados de la década de los años noventa, de una empresa transnacional que es líder mundial en la producción de alimentos. La radicación de la planta procesadora de papas de McCain en la zona núcleo de producción papera de la provincia de Buenos Aires, dio lugar a la exportación de volúmenes significativos de papa procesada con destino a los mercados de Brasil y otros países de la región. Ese proceso de desarrollo productivo y exportador que lleva más de dos décadas hizo que las exportaciones argentinas se ubicaran en el TOP 10 de los países que exportan papa procesada. En efecto, las exportaciones de este producto en el año 2019, antes de la pandemia, superaron los 229 millones de dólares, alcanzando la cifra más alta del último quinquenio. McCain fue responsable de más del 70% del total exportado. El estudio muestra que la disponibilidad de materia prima de calidad, en una zona de altos rendimientos para la producción de papa, sumados a la organización y gestión de una red de proveedores con contratos de compra que propició McCain junto con inversiones para asegurar mayor eficiencia y acceso a activos estratégicos dio lugar al desarrollo de una amplia cadena de suministro con el apoyo de distintos actores en el territorio. La llegada de Mc Cain, generó también derrames y spillovers en el sector donde hubo ingreso de nuevos jugadores en la actividad que abrieron plantas industriales. PepsiCo, especializada en productos para snack que también utiliza papas, instaló su planta en Mar del Plata en 2009. Alimentos Modernos (hoy 50% de propiedad del Lamb Weston) también está desembarcando en la zona. A estas dos empresas, se sumó la transnacional Simplot, que se radicó en Mendoza (a 1.100 km de distancia) que compra semillas y producción de papa industria en el sudeste bonaerense. A estas inversiones, se suman también emprendimientos de empresarios locales, de otras provincias argentinas o de empresas brasileñas que ven el potencial que tiene la zona. Estas iniciativas facilitaron el nacimiento y desarrollo de empresas proveedoras de equipamiento, insumos y servicios para la agroindustria, el desarrollo de nuevas variedades y de un mercado se semillas especializado sobre la base del conocimiento científico tecnológico de las instituciones locales, la formación y disponibilidad de recursos humanos y la mejora en las condiciones de contratación. El trabajo también destaca el papel que jugó el gobierno local en la provisión de bienes públicos que terminaron de convencer a Mc Cain para instalarse en Balcarce a partir de lo cual se generaron importantes eslabones de la cadena productiva que son fundamentales para el desarrollo del sector.
CHANGES OF QUALITY OF LIFE AFTER SURGICAL TREATMENT OF SECONDARY HYPERPARATHYROIDISM IN PATIENTS UNDERGOING RENAL REPLACEMENT THERAPY WITH HEMODIALYSIS
Authors:   Irkutsk Scientific Center of Surgery and Traumatology, Ilyicheva E.A. , Bulgatov D.A. ,   Irkutsk Scientific Center of Surgery and Traumatology, Roy T.A. ,   Irkutsk Scientific Center of Surgery and Traumatology, Lebedeva D.V. ,   Irkutsk State Medical University
Published: February 2022

Objective. To assess quality of life (QoL) using the Short Form Medical Outcomes Study (SF-36) questionnaire before and after surgical treatment of secondary hyperparathyroidism (SHPT) in patients undergoing renal replacement therapy. Methods. QoL was assessed before surgery and in the period from 4 to 30 months after surgical treatment of SHPT. Twenty patients were questioned according to SF-36 questionnaire in a longitudinal study and in comparison, with the population indicators of the Irkutsk region residents. The median age before surgery was 53 years, the median level of PTH before surgery was 1715 pg/ml. After surgical treatment, the median of PTH was 12.9 pg/ml, calcium - 1.99 mmol/l; phosphorus - 1.72 mmol/l within 6-12 months. Results. An unfavorable effect of SHPT on QoL of patients receiving hemodialysis was shown in comparison with population indicators. Evaluation of the effectiveness of surgical treatment of SHPT in relation to changes in the quality of life of patients is given. A statistically significant increase in QoL indicators after surgical treatment was proved for all the studied scales (pW<0.05). In the long term after the operation, QoL of patients receiving hemodialysis exceeds the population indicators on the scales of the psychological component of health, pain intensity, social and role functioning. Conclusion. The SHPT in patients receiving hemodialysis is the cause of a decrease in QoL in comparison with population indicators was shown for the first time. Surgical remission of the disease leads to a statistically significant improvement in QoL, and on the scales of the psychological component of health, intensity of pain, social and role functioning, the quality of life of patients exceeds population indicators in a similar age group. The data obtained allow us to consider postoperative hypoparathyroidism as one of the favorable factors in course of postoperative period and criterion for remission of the disease. What this paper adds It has been shown that the secondary hyperparathyroidism in patients undergoing hemodialysis is the cause of a decrease in life of quality in comparison with population indicators. Surgical remission of the disease leads to a statistically significant improvement the quality of life. The data obtained allow considering postoperative hypoparathyroidism as one of the favorable factors in the course of the postoperative period and criteria for remission of the disease.
Impact of Corporate Governance on Performance of Selected Commercial Banks in Bangladesh: A Comparative Approach
Authors: Hossain Tarik
Published: February 2022

This study tries to determine the impact of Corporate Governance (CG) on the performance of Commercial Banks (CB) in Bangladesh. Data are collected from different banks listed under DSE for the period starting from 2015 to 2020. For analyzing the data and testing hypothesis Pearson’s correlation and OLS regression models are used to assess the relationship among the performance of the banks and CG related predictor variables like Board Size (BS), Board Independence (BI), Audit Committee (AC), Risk Management Committee (RMC), and some control variables like Firm Age (FA), Firm Size (FS) and Market Capitalization (MC). The regression analysis results showed a mixed result. The BS and BI are significantly affirmatively related with ROE and positively correlated with ROA. The BS is affirmatively related with Tobin’s Q, but BI is significantly negatively related. No significant positive connection is found between the AC, RMC and ROE, ROA. The RMC is significant affirmatively related with Tobin’s Q, but no significant association between the AC and Tobin’s Q. The theoretical part of this paper has focused about a brief discussion about different variables related with Corporate Governance. The empirical part is based on a survey made on twenty commercial banks listed with DSE.