bluuebunny/crossref_metadata_2025 huggingface dataset:
An Efficient Image Encryption Method Based on Enhanced Josephus Problem and a Non-Invertible Economic Map
Authors: Shibeeb Ahmed Kareem , Ahmed Mohammed Hussein , Albermany Salah
Published: January 2024

As an increasing number of digital images are created and transmitted over the internet, there is growing concern over their unauthorized use, which has a big impact on both security and privacy concerns. In this research, we provide a fast and secure image encryption scheme by using an enhanced Josephus problem and two-dimensional non-invertible economic chaotic map (2D-ECM) to safely and covertly protect digital image information throughout public channel transmission. First, the initial values of the 2D-ECM map are generated based on Secure Hash Algorithm (SHA-256) and the input secret key. Then, the Josephus problem is enhanced by substituting the extract operation with location exchange and dynamic start location and step size is employed to scramble the image pixels. In order to integrate the confusion process and diffusion process, the enhanced Josephus problem is utilized indirectly to choose two random columns from the scrambled image and random image to XOR them with the current column. The evaluation results prove that the proposed image cryptosystem is more efficient compared to existing cryptosystems.
IX Curso Teórico-Práctico de intervencionismo para el control del dolor crónico.
Authors: Ochoa Deibis Ulises
Published: January 2024

Por cuarto año consecutivo la Ciudad de Panamá se vistió de anfitriona, para profesores y alumnos de Hispanoamérica en la realización de IX Curso Teórico-Práctico de Intervencionismo para el Control Dolor Crónico.La Academia Latinoamericana de Médicos Intervencionistas en Dolor (ALMID), la Fundación Cenit para la Investigación en Neurociencias, la Federación Latinoamericana de Asociaciones para el Estudio del Dolor (FEDELAT), y la Facultad de Medicina de la Universidad de Panamá, nuevamente formaron un engranaje académico y operativo en conjunto con nuestros patrocinadores con la finalidad de enseñar, de primera mano, a los especialistas en el área del manejo del dolor, las técnicas mundialmente avaladas para el alivio y seguridad del paciente con dolor crónico de difícil tratamiento.
Pregnancy termination indications and outcomes before 24 weeks of gestation – a case series
Authors:   Department of Obstetrics and Gynecology, Division of Perinatology, Necmettin Erbakan University Medical School of Meram, Konya, Turkey, Doğru Şükran , Akkuş Fatih , Atci Asli A. , Caner Erdoğan Arif , Acar Ali
Published: January 2024

Objective: This study aimed to assess termination of pregnancy (TOP) indications and obstetric outcomes before the 24th gestational week. Materials and methods: This is a retrospective study that includes terminations performed in singleton pregnancies between December 2021 and December 2022 in the Perinatology Clinic of Necmettin Erbakan University Meram Medical Faculty. According to the reasons for TOP, all patients were divided into three groups: maternal, fetal, and obstetric reasons. The termination approach and outcomes were evaluated in all cases. Results: A total of 210 patients were included in the study. Considering termination indications, 18 (8.5%) patients had maternal causes, 127 (60.5%) had fetal causes, and 65 (31%) had obstetric causes. Maternal causes were significantly higher in the 1st trimester and fetal causes in the 2nd trimester (P = 0.001). In the maternal group, 77.8% dilatation and curettage were used, 70.1% misoprostol and 29.9% misoprostol + Foley catheter in the fetal group, and 66.2% misoprostol in the obstetric group (P = 0.0001). The length of hospital stay and recurrent revision curettage were not statistically different between the fetal, maternal, and obstetric groups (P = 0.099, P = 0.8, respectively). Conclusion: Termination options should be offered for complicated pregnancies due to fetal, maternal, or obstetric reasons. Pregnancy termination week and indication affect morbidity. Key words: fetal anomaly – morbidity – pregnancy – termination
An updated perspective on diagnostics and treatment of idiopathic granulomatous mastitis
Authors:   II. Radiology Department, Faculty of Medicine, Comenius University and St. Elisabeth Cancer Institute, Bratislava, Slovak Republic, Vanovčanová Lucia , Mináriková Eva
Published: January 2024

Aim: To present our experiences with the anti-inflammatory treatment of idiopathic granulomatous mastitis (IGM) and highlight the imaging and anamnestic specifics of its diagnosis. Methods: Patients with acute inflammatory breast disease underwent ultrasound examination followed by a collection of anamnestic data, and histological analysis of the process was performed using core-cut biopsy, confirming IGM. Subsequently, anti-inflammatory treatment was administered, consisting of a combination of colchicine, vitamin E, and local compresses made from an infusion of Plantago lanceolata. We also recorded any additional treatments administered extra muros prior to histological analysis (such as antibiotics, surgical intervention, and time from onset of symptoms to confirmation of dia gnosis). We analyzed the effect of the anti-inflammatory treatment administered, including the onset of improvement, adverse effects, recurrences, and duration of treatment required for symptom resolution. Results: Between 2016 and 2022, we diagnosed and histologically confirmed IGM in 53 patients through biopsy. Of these, 45 (84.9%) underwent the anti-inflammatory treatment we proposed, while eight (15.1%) opted for a different form of therapy. Currently, 27 patients (60%) are without treatment and clinical manifestations. The average duration of treatment was 34 months, and improvement in the clinical condition was observed within 2–8 weeks (average of 3 months). Four patients (14.81%) reported dyspepsia as an adverse effect. Recurrence occurred in five patients (18.52%) after 1–36 months (average of 7 months). Patients (22, 81.48%) who completed the treatment are without difficulties for 3–70 months (average of 34 months). The remaining 18 patients (40%) are currently undergoing treatment, lasting 3–41 months (average of 19 months). Conclusion: Anti-inflammatory treatment with colchicine, along with supportive therapy (compresses made from an infusion of Plantago lanceolata and vitamin E), represents a promising trend in the therapy of IGM, with minimal adverse effects. Key words: mastitis – idiopathic granulomatous mastitis – breast ultrasound – core cut biopsy – anti-inflamatory treatment
DNA analysis of partial hydatidiform mole revealing triandric monogynic tetraploidy
Authors:   Institute of Medical Biology, Genetics and Clinical Genetics, Faculty of Medicine, Comenius University Bratislava, Bratislava, Slovak Republic, Gergely Lajos , Korbeľ Miroslav , Repiská Vanda , Danihel Ľudovít , Hutník Juraj , McCullough Liam , Priščáková Petra
Published: January 2024

The authors present a case of a partial hydatidiform mole where DNA analysis (STR – short tandem repeat genotyping) showed a triandric monogynic tetraploid genome composition with a XXXY gonosomal complement. This genetic finding clinicopathologically correlates with a partial hydatidiform mole, although it is rare in comparison with the typical, diandric monogynic triploid partial moles. The genetic analysis definitively confirmed the suspected diagnosis of a partial mole. To exclude the possibility that molar pregnancy represented retained products of conception after elective pregnancy termination, STR profiles from molar pregnancy and previous products of conception were compared. Short tandem repeats genotyping is a useful molecular genetic method in the differential diagnosis of partial hydatidiform moles, where clinical-pathological findings are frequently ambiguous. Key words: DNA analysis – short tandem repeat genotyping – tetraploidy – partial hydatidiform mole – retained product of conception
Outcome of a patient with Herlyn-Werner-Wunderlich syndrome treated with Balloon septostomy – pre- and postsurgical ultrasound findings
Authors:   Department of Gynaecology nad Obstetrics, Pavol Jozef Safarik University in Kosice Faculty of Medicine and Hospital Agel Košice-Šaca Inc., Košice-Šaca, Slovak Republic, Dosedla Erik , Ballová Zuzana , Gašparová Petra , Sitáš Martina , Calda Pavel
Published: January 2024

Herlyn-Werner-Wunderlich syndrome is an unusual congenital anomaly defined by a triad of congenital defects of the female urogenital tract – homolateral renal agenesis, uterus duplex and obstructed hemi-hematometrocolpos whose etiology remains still unclear. Pelvic pain, dysmenorrhea and palpable mass due to the hematocolpos or hematometra are the most common clinical symptoms. Endometriosis is considered to be a prevalent finding in these young patients possibly explaining the pathophysiological mechanism of endometriosis as the result of retrograde menstruation. Early diagnosis and subsequent treatment are important to prevent the development of severe complications. In general, clinical and reproductive outcomes after drainage of the hematometrocolpos are reported to be satisfactory. A 13-year-old patient presented with pelvic pain and was diagnosed with OHVIRA syndrome treated with Balloon septostomy. Key words: Herlyn-Werner-Wunderlich syndrome – hemi-hematocolpos – Mullerian anomaly – Wolff ian anomaly – obstructive genital abnormality
Methods and techniques of fertility preservation in patients with endometriosis
Authors:   Department of Obstetrics and Gynecology, Medical Faculty of Masaryk University and University Hospital Brno, Czech Republic, Sisková Ingrid , Mekiňová Lenka , Hudeček Robert , Ješeta Michal , Šimová Soňa
Published: January 2024

Objective: Endometriosis is a chronic disease with a relatively high prevalence in the female population. Both the disease itself and its surgical treatment can adversely affect the fertility of patients. For this reason, endometriosis is offered as a possible indication for fertility preservation by cryopreservation methods. The aim of this paper is to present the current knowledge on the options of fertility preservation in this subpopulation. Methods: Search of relevant literature in PubMed/Medline, Web of Science and Scopus databases. Results: Fertility preservation by cryopreservation methods has so far been used mainly in the care of women with cancer. With increasing experience, the effectiveness and availability of these methods have increased significantly and the indication spectrum has been extended to selected benign diseases such as endometriosis. Three techniques are currently established in practice: embryo cryopreservation, oocyte cryopreservation and ovarian tissue cryopreservation. Oocyte cryopreservation is the most commonly used technique, since it is the most advantageous for the patient and, according to the available data, is an effective way to increase the chances of future pregnancy for patients with endometriosis The purpose is to realize the protection of reproduction before the planned operation. Conclusion: The diagnosis of endometriosis negatively affects the fertility of women. For some patients, the solution is fertility preservation by cryopreservation methods. Further clinical studies are needed to define exact, practically applicable indication criteria, potential risks of procedures and their benefits and cost-effectiveness. Key words: fertility preservation – endometriosis – oocyte cryopreservation – embryo cryopreservation – ovarian tissue cryopreservation
Effect of pelvic floor status on the outcome of pelvic organ prolapse surgery
Authors:   Department of Gynecology, Obstetrics and Neonatology of the 1st Faculty of Medicine, Charles University and General Hospital in Prague, Czech Republic, Dvořák Jan , Mašata Jaromír , Fučík Tomáš , Martan Alois , Švabík Kamil
Published: January 2024

Pelvic organ prolapse (POP) is a common diagnosis with an incidence in the population of up to 50%. POP causes restrictions in everyday life and reduces patients’ quality of life. Therapy is either conservative in the form of physiotherapy or the use of different types of pessaries, possibly. in case of inappropriateness or failure of conservative treatment, an operative solution is chosen. Avulsion injury of the levator ani muscle (MLA) is a strong factor in the development of POP. Some patients undergo repeated surgeries for POP, negatively impacting their quality of life. Studies show that the stage of POP and avulsion injury is associated with an increased risk of recurrence after index prolapse surgery. Ultrasound diagnosis of MLA injuries might help in predicting the risk of recurrence. Assessment of pelvic floor function is crucial for the success of surgical management of POP. Key words: pelvic organ prolapse – gynaecologic surgery – reoperation – pelvic floor – levator ani muscle
Diagnosis of complicated gynaecological inflammations by computed tomography – one center experience
Authors:   Clinic of imaging methods, Faculty of Medicine, Charles University and University Hospital Plzeň, Czech Republic, Korčáková Eva , Ferda Jiří , Presl Jiří
Published: January 2024

The aim of this article is to acquaint the gynaecological public with our experience with the use of computed tomography in the diagnosis of fluid collections in women with clinical suspicion of complicated pelvic inflammation or a complication after gynaecological surgery. We present diagnostic dilemmas that radiologists deal with, including differential diagnoses. We also deal with the benefits for the referring gynaecologist, and we also discuss the possible discrepancy between his expectations and the result of the examination. Key words: tuboovarian abscess – computed tomography – fluid collection
Kindergarten Visual–Perceptual and Motor Skills and Behavioral Traits Predict First-Grade Chinese Handwriting Legibility and Speed
Authors: Hwang Yea-Shwu , Hsiao Ying-Lu , Su Pei-Fang , Hung Jo-Ying , Tsai Wen-Hui
Published: January 2024

Importance: Clarifying the relationship between kindergarteners’ characteristics and their future handwriting performance is beneficial for the early detection of children at risk of handwriting difficulties.

Objective: To determine which visual–perceptual and motor skills and behavioral traits significantly predict kindergartners’ Chinese handwriting legibility and speed in the first grade.

Design: One-year longitudinal, observational design.

Setting: Kindergarten and elementary schools.

Participants: One hundred six kindergarten children (53 boys and 53 girls; ages 5 or 6 yr) were recruited.

Outcomes and Measures: The participants completed two subtests of the Bruininks–Oseretsky Test of Motor Proficiency–Second Edition, Test of Visual Perceptual Skills–Third Edition, Beery–Buktenica Developmental Test of Visual–Motor Integration (Beery™ VMI), and the Attention-Deficit/Hyperactivity Disorder Test–Chinese Version in kindergarten. Their handwriting legibility (character accuracy and construction) and speed were assessed by investigator-developed Chinese handwriting tests in the first grade.

Results: Multivariate regression analyses indicated the independent predictive power of spatial relationships (p = .042) and inattention (p = .004) for character accuracy. Visual–motor integration (VMI; p = .008) and inattention (p = .002) were the key predictors of character construction. Manual dexterity (p = .001) was the only significant predictor of writing speed.

Conclusions and Relevance: Kindergarteners who perform poorly in spatial relationships, VMI, manual dexterity, and attention are likely to have less legible Chinese handwriting and slow writing speed in first grade.

Plain-Language Summary: Children’s visual–perceptual and motor skills and behavioral traits in kindergarten can predict their Chinese handwriting legibility and speed in first grade. This study found that kindergarteners who performed poorly in spatial relationships, VMI, manual dexterity, and attention were likely to have less legible Chinese handwriting and slow writing speed in the first grade.
Az ukrán diákok integrációja a szlovák oktatáspolitika tükrében
Authors: Nagy Roland
Published: January 2024

Tanulmányomban a szlovákiai oktatáspolitikai integráció elméleti és gyakorlati aspektusait vizsgálom, főként az orosz–ukrán háború kapcsán kirobbant menekültválság hatásaira összpontosítva. Mivel a külföldiek gyermekeinek iskolarendszerbe való beillesztése az általános értelemben vett bevándorlási politika részét képezi, ezért átfogó képet nyújtok a jogszabályok és fontos stratégiai dokumentumok történeti alakulásáról. Emellett kitérek a bevándorlással kapcsolatos legfontosabb statisztikai adatokra is, amelyek segítségével tágabb összefüggésekbe helyezem az ország politikai vezetésének döntéseit az elfogadott jogi keretrendszer kapcsán. Végül a különféle állami szervek és jogvédő szervezetek elemzésein keresztül rámutatok a bevándorlási politika általános hiányosságaira, majd felvázolom az oktatáspolitikai integráció egyes állomásait és az ezekkel összefüggő gyakorlati problémákat.
Comparative morphology and function of feeding appendages in food intake behaviour of the whiteleg shrimp, Litopenaeus vannamei, and the giant freshwater prawn, Macrobrachium rosenbergii
Authors: Gunzo Kawamura  , Teodora Uy Bagarinao  , Nur Syallinaz Seniman  , Annita Seok-Kian Yong  , Leong-Seng Lim
Published: January 2024

Combining feeding appendage morphology and behavioural observation of the motion pattern of the feeding appendages clarified many aspects underlying the feeding processes of the giant freshwater prawn (Macrobrachium rosenbergii) and the marine whiteleg shrimp (Litopenaeus vannamei) in aquaria. The food intake behaviour was video recorded during eating pellet food, pieces of fresh squid and fish. While M. rosenbergii took pellet one by one, L. vannamei picked up many pellets at one time and held them at the mouth with the 3rd maxilliped endopods and the 1st walking legs. Both species used the right chelate walking legs rather than the left walking legs to pick up the food. The 3rd walking legs of L. vannamei were longest and heaviest among the chelate walking legs but their major role was not for feeding but for feeding contests aggression. While M. rosenbergii easily crunched pellets by the mandibles, L. vannamei did not crunch pellets due to the softer and not strong mandibles and frequently spat out them, indicating that the present hard pellets are not suitable for L. vannamei. Both species kept a piece of elastic fresh squid or fish flesh at the mouth and tore the food into small pieces with the help of repeated pulling down motion of the 3rd maxilliped endopods. However, the mandible teeth of the two spices were not sharp enough to gnaw off the fibrous muscle in one bite. The 2nd and 3rd maxilliped endopods were used for holding food at the mouth and did not contribute to mastication of food. The 2nd and 3rd maxilliped exopods exhibited the horizontal fanning motion, which a unidirectional water flow moving backwards in the gill chamber (visualized with milk). The maxilliped exopods were found to contribute not to feeding but ventilation. Based on the results obtained, development of softer pellets was recommended for L. vannamei.
FEELINGS OF WOMEN WITH BREAST CÂNCER
Authors: Guilherme Pereira Victor , Cristina Condé Renata , Da Silva Alves Renato , Cristina Santos Alves Elaine , Souza França Ramos Robson , Esméria Neta Maria , do Carmo Ferreira Costa Cordeiro Maria , De Cássia Caldeira Santos Goes Rita , Scremin Marlete , Batista Vieira Isabella , Theresa Faria de Almeida Anna , Pereira Amancio Janaina , Lohany Cordeiro Souto Brenda , Maria Cordeiro Cardoso Julia , De Oliveira e Silva Júlia , Dias Cordeiro Rafael
Published: January 2024

Objective: to know the feelings of women diagnosed with breast cancer. Materials and Methods: The theme was addressed through an integrative literature review, an instrument of Evidence-Based Practice (EBE). A survey was carried out in the BDENF, LILACS and SciELO databases from August to September 2023. The following descriptors were used: Feelings. Breast cancer. Diagnosis, they were combined for search. Publications in the study were published Portuguese that made the abstract available in their databases. Results: We started from the systematization of categories of analysis that represent the axis around which the product of the dynamics performed is articulated, namely: Feelings experienced by women in the face of breast cancer and Family support for women with breast cancer. Final Considerations: Feelings arising from breast cancer diagnosis translate into fear, anxiety, uncertainty, hopelessness and anger.
THE NURSE OF THE FAMILY HEALTH STRATEGY AND THE CARE OF PATIENTS WITH PSYCHOLOGICAL DISTRESS
Authors: Araújo Souto Darlene , Peres Fonseca Rafaela , Ferreira da Silva Junior Rene , De Almeida de Souza Torres Silvério , Alves Barbosa Teles Mariza , D’Paula Ribeiro Vieira Torres Jaqueline , Souza Torres Luana , Macedo da Costa Lorendany , Marques Batista Rocha Rodrigo , Gomes Campos Borel Manuela , Thais Costa Brunna , Maria Alencar Ana , Gonçalves Grillo Marcell , Oliveira Facin Souza Dienypher , Gomes Moreira Leidiany , Nunes de Aquino Fonseca Euvaíra , Christine Mendes Dutra Nathany , Beatriz Lima Pimenta Márcia , Moreira de Araújo Melo Cinthia
Published: January 2024

The objective of this research is to understand nurses’ perception of care for patients with psychological distress in the Family Health Strategy (ESF). This is a qualitative and descriptive study. The study population was made up of seven nurses, working for more than six months at the ESF in Montes Claros - MG. The number of participants was defined by theoretical saturation. For data collection, a semi-structured interview was carried out. For data analysis, content analysis with thematic categorization was adopted. The research results showed that mental health care is provided casually by professionals in primary care. The difficulty of planning and executing actions involving new care practices and the multidisciplinary team was verified, and the obstacle is the lack of coordination with the network. The lack of training of professionals who deal with these patients was noted. It was observed that the nurse attributes an important role to the family in the patient’s adherence to therapeutic workshops. It is hoped that this study can contribute to increasing the quality of care for these patients and the need for scientific data, development of programs and other investigations related to this topic.
RISK MANAGEMENT IN SURGICAL CLINICAL UNIT
Authors: de Fátima Fernandes Santos Silva Maria , Siqueira de Oliveira Rafaela , Janaína de Araújo Silva Pâmella , Lacerda Jorge Ottoni Adriana , Juneo Rodrigues Faria Rogerio , De Oliveira e Silva Júlia , Luísa Soares da Silva Moreira Maria , Henrique Santos da Cruz Guilherme , Dias Gomes Gabriella , Santos Pereira Micaela , Paula Nogueira Machado Ana , Siega Nepomuceno Matheus , Sousa Pinheiro Jeferson , Isabel Veloso Fonseca Antunes Veronica , Lira Santos Ribeiro Bruna , Alves de Jesus Amanda , Da Silva Campos Joelma , Fernanda Rodrigues Lima Maria
Published: January 2024

Objective: Identify the health risks patients/workers are exposed to in the surgical clinic of a hospital in the north of Minas Gerais. Method: This is an experience report, the instruments used were: Risk Map – Sector Diagnosis, ANVISA General Standards and Structure Assessment, Risk Mapping Objective: Identify which health risks patients/workers are exposed to from nursing service and Strategic Planning. Results: The risk factors found and highlighted as priorities in the clinical diagnosis of this study were: risk of bleeding, risk of infection, risk of impaired skin integrity, risk of injury, risk of falls, risk of shock and risk of unstable blood glucose. Nurse intervention is of great importance in reducing or even eliminating damage resulting from illness and hospitalization. Conclusion: The study in question provided knowledge to the manager and clinical nurse about the risks that the sector had.
DIFFICULTIES EXPERIENCED BY FAMILY CAREGIVERS IN THE DAILY CARE OF THE ELDERLY
Authors: Kelvin Botelho Dias Icaro , Cordeiro Muniz Silva Elisabete , Soares da Silva Menezes Agna , Ferreira da Silva Junior Rene , Isabel Veloso Fonseca Antunes Veronica , Dias Prado Ticiane , Ferreira Jesus Valdinei , Gonçalves Fagundes Giovanna , Souza Miranda Bruno , Antunes Aquino Cardoso Gonçalves Sueli , Edson de Oliveira Diego , Jardim Neiva Ricardo , Jaime Barreto Costa Leandro , Vieira de Oliveira Valdira , Soares Pereira Rafael , Pimenta Faria Galvão Carolliny
Published: January 2024

Introduction: care for the elderly requires family caregivers to reorganize family roles, in addition to constant and holistic support, when there are failures in this process, significant negative outcomes may occur for the caregiver. Objective: to know the difficulties experienced by family caregivers in the daily care of the elderly. Methodology: descriptive study of qualitative approach conducted with family caregivers registered in a Basic Health Unit. A questionnaire was used for sociodemographic characterization and a semi-structured interview with a guide question. Content analysis was used for data analysis. Results: the conditions to which caregivers are exposed entail important challenges that require family support and health services. The study revealed constant episodes of conflicts, resulting in the absence of division of responsibilities by family members. Conclusion: the difficulties experienced by the caregiver were questions related to sleep quality, overload, family relationships and feelings of ambivalence.
Sociedades que realizan actividades profesionales: la necesaria revisión legislativa del régimen de operaciones vinculadas y de la simulación
Authors: Blázquez Lidoy Alejandro
Published: January 2024

Las sociedades que realizan actividades de carácter profesional están siendo objeto de un especial control por parte de la AEAT. La aplicación del puerto seguro del artículo 18.6 de la Ley del impuesto sobre sociedades (LIS) exige que el contribuyente se haya acogido al mismo y que disponga de medios materiales y personales adecuados. La Administración está regularizando a través de la figura de la simulación o a través del régimen de operaciones vinculadas. En este último caso, no es infrecuente que se ajuste por el 100 % del beneficio operativo («beneficio cero») o que se califique la actividad como de bajo valor añadido y se deje en la sociedad un margen del 5 % sobre costes. En este estudio, que recoge la última jurisprudencia y doctrina administrativa, se analizan el puerto seguro del artículo 18.6 de la LIS, el ajuste primario, el ajuste secundario y los servicios de bajo valor añadido. Se hace un análisis crítico de la simulación en estas sociedades, que está mutando de la ocultación hacia el concepto de razones económicas válidas. El régimen fiscal está distorsionando el régimen mercantil de estas sociedades y se hace necesario que el legislador intervenga de manera global, y no solo desde el ámbito tributario, y se adopte un sistema coherente para este tipo de sociedades. Desde la perspectiva del derecho tributario, es necesario diseñar cláusulas antiabuso ad hoc, más allá de las categorías generales de la Ley general tributaria, y un régimen sancionador específico que respete el principio de proporcionalidad y el perjuicio efectivamente causado a la Hacienda pública como unidad.
ANALYSIS OF RESEARCH RESULTS AND APPLICATION OF PILES AS PART OF HYDRAULIC FACILITIES
Authors:   M.Kh.Dulaty Taraz regional University, Bekbasarov I.I. , Shanshabayev N.А. ,   M.Kh.Dulaty Taraz regional University
Published: January 2024

The review article analyzes the results of research and application of various types of pile structures as part of hydraulic structures, including hammered, bored, tongue-and-groove piles. The results of the analysis of the study of foreign and domestic experts have shown the effectiveness of the use of piles in hydraulic engineering. The applications of piles as anti-filtration curtains of dams, for blocking riverbeds, the base of trough channels, aqueducts, mooring, embankments, fencing, shore-strengthening and other hydraulic structures are described. The features of the work of various types of driven piles (prismatic, wedge-shaped, conical, tongue-and-groove) and pile foundations of various hydraulic structures (trough channels, aqueducts, mooring, embankments, fencing, shore-strengthening, etc.) are considered. structures). The use of bored piles in the construction of the base of various hydraulic structures is described. The overall dimensions of the well piles for the installation of drilling piles are given. The distinctive features of various hydraulic structures on pile foundations under the influence of static, dynamic and special loads are revealed. Methods for calculating the parameters of immersion, deformability, stability and bearing capacity of piles and pile foundations are considered, which allow taking into account the patterns of their joint work with hydraulic structures. The analysis of the study shows a number of positive examples of the use of piles as part of hydraulic structures: cost-effectiveness, manu­facturability, quickness and efficiency, etc.
DEVELOPMENT OF ENERGY-EFFICIENT AIR DEDUSTING
Authors:   Satbayev University, Irgibayev T.I. , Kiyanitsa L.A. ,   Institute of Mining named after N.A. Chinakala of the Siberian Branch of the Russian Academy of Sciences, Lugin I.V. ,   Institute of Mining named after N.A. Chinakala of the Siberian Branch of the Russian Academy of Sciences, Krasyuk A.M. ,   Institute of Mining named after N.A. Chinakala of the Siberian Branch of the Russian Academy of Sciences
Published: January 2024

Among the sources of internal pollution one can point to dust, breath products of passengers, various emissions from finishing materials of trains and metro stations, etc. This problem is usually solved in two ways: wet cleaning of tunnels and stations and using powerful tunnel vacuum cleaners. Both of these methods have common disadvantages. Firstly, dust removal can only be carried out at night, when there are no trains on the line. Secondly, the dust removal installations themselves are expensive and are effective only at low speeds of dust movement through the tunnel. All metros in the world have a problem with dust removal. Research methods include analytical and computational studies of air distribution in the metro ventilation network using mathematical modeling methods using graph theory and flow algorithms, as well as experimental studies of air flow parameters in natural conditions of the Almaty metro.This article proposes an innovative method for dust removal of tunnel air based on the use of piston action of trains and labyrinth filters installed in station ventilation joints. The parameters of the calculation model of the metro line are substantiated on the basis of a decomposition approach to the mathematical modeling of aerodynamic processes by moving from a linear model of the metro line to a periodic open-loop model. Computational aerodynamics methods were used to determine the patterns of changes in air speed through the ventilation vent and the available pressure drop depending on the speed and mode of trains passing through the station.
ANALYSIS OF PROSPECTS FOR THE USE OF LOCAL RAW MATERIALS FOR THE PRODUCTION OF SELF-SEALING CONCRETES IN THE REPUBLIC OF KAZAKHSTAN
Authors:   International Educational Corporation, Kolesnikova I.V. , Suvorov A.S. ,   Central Laboratory of Certification tests of Building Materials, 050058, Almaty, Kazakhstan, Bekturganova N.Y. ,   International Educational Corporation
Published: January 2024

Initiation of production and application of self-compacting concrete (SCC) in Kazakhstan requires not only local research within the framework of solving technological problems in one agglomeration under active construction, but also an assessment of potential opportunities for the development of the raw material base of SBC and processing industries in different regions. Taking into account that the raw material possibilities for these purposes in the regions of Kazakhstan differ to a great extent, and the considered type of concrete is economically feasible only when using local raw materials in the composition, the conceptual approaches to the selection and evaluation of raw materials for SCC, known in the world scientific practice, were analyzed and summarized. as well as the results of the development of SCC in KazGASA with the use of raw materials relevant for a number of regions. Studies of local raw materials have shown the prospect of using high-silica furnaces in high-strength substations; fillers from the screenings of stone crushing of local rocks, represented by hydrothermally and metasomatically altered porphyrites of medium-major composition and porphyries of decrystallized quartz-feldspar composition; granites and hybrid rock of quartz diorite in composition with zeolite, microsilica. Issues requiring study were identified in the application of certain types of raw materials, which differ in mineralogical and other characteristics from those previously studied, issues in the development of own technology for the synthesis of organic modifiers for SCC.
The SYNTHESIS OF METAL NANOPARTICLES USING PLANTS TO ENHANCE THE GROWTH AND GERMINATION OF AGRICULTURAL CROPS
Authors:   S.Seifullin KazakhAgroTechnical Research University, Khamitova T.O. , Zhumanazarova G.M. ,   Karaganda Industrial University, Tyanakh S. ,   E.A. Buketov Karagandy University N-PLC, Kovalevа A.K. ,   E.A. Buketov Karagandy University N-PLC, Havlicek D. ,   Charles University
Published: January 2024

Nanoparticles of several metals obtained through biosynthesis have interesting pharmacological properties due to extract components' sorption on their surface, which broadens their application possibilities. For these reasons, the issue of metal nanoparticles synthesis biological ways optimization is highly important nowadays. Purpose of the work is to present experimental data on the synthesis of metal nanodispersions using plant extracts of Artemisia (wormwood), Psylliostachys (plantain), Achillea nobilis (yarrow) and use in growing crops. Methodology. A feature of this method is the use of a more environmentally friendly approach to the synthesis of nanoparticles by preparing extracts from plant materials. Plant raw materials for synthesis, synthesis conditions (temperature, pH value, ratio of metal salts: extract) were experimentally selected. It was found that in presence of extract from bitter wormwood nanoparticles formation occurs faster than in case of using Psylliostachys (plantain) or Achillea nóbilis (yarrow). Sythesized silver nanoparticles were studied using microscopy and spectroscopy. Results. Obtained particle sizes are between 70 and 100 µm, which proves nanostructured nickel and cobalt particles formed in synthesis. Average particle size is 80 µm. New growth stimulator М-Nitro-Ni,Co was used to increase annual grasses and vegetables growth and germination; as a result, they had stronger roots, thicker stems, dark-green leaves and larger size comparing to the test ones.
IMPROVED SORPTION OF PRASEODYMIUM IONS FROM NITRATE SOLUTIONS BY ACTIVATED ION EXCHANGERS
Authors:   Bekturov Institute of Chemical Sciences, Jumadilov T.K. , Myrzabay D.M. ,   Bekturov Institute of Chemical Sciences, Ibragimova Z.D. ,   Kazakh-British Technical University
Published: January 2024

In this research, we investigated the praseodymium ions sorption by the ion exchangers KU-2-8 (H+form) and AV-17-8 (OH-form) as an interpolymer system called "KU-2-8:AV-17-8" (X:Y) with the molar ratio of ionic groups X:Y (6:0, 5:1, 4:2, 3:3, 2:4, 1:5, and 0:6) in praseodymium nitrate solution. To be clear, two cross-linked polymers having active functional groups that are in the same solution but not in direct contact form an interpolymer system. The purposeof our research to demonstrate how activating ion exchangers as functional polymers by remote contact in an aqueous medium enhances the sorption of a variety of valuable metals and their compounds from industrial waste solutions, including praseodymium. Objects.Ion exchangers that are mutually activated in an aqueous medium undergo conformational and electrochemical changes that lead to a shift in their state from neutral to highly ionized and an increase in their sorption activity toward target metal ions. Results.The experimental findings showed that the sorption activity of the interpolymer system KU-2-8:AV-17-8 (5:1) increased significantly when compared to praseodymium ions (43 %), but the sorption activity of the raw KU-2-8 (6:0) and raw AV-17-8 (0:6) had the same values of 25 % and 5 %, respectively. Conclusion. This research sheds light on a novel and promising approach to improve the efficiency of ion exchangers, opening possibilities for the effective recovery and removal of valuable metals from complex solutions. Additionally, it holds practical implications for sustainable waste management and resource recycling, contributing to the advancement of environmental protection and resource conservation in various industrial sectors. Further investigations and optimization of the interpolymer system could yield substantial benefits for greener and more resource-efficient future sorption technologies.
OBTAINING POTASSIUM-CONTAINING FERTILIZERS FROM WASTES OF THE PHOSPHORUS INDUSTRY
Authors:   A.B. Bekturov Institute of Chemical Sciences JSC, Chernyakova R.M. , Sultanbayeva G.Sh. ,   A.B. Bekturov Institute of Chemical Sciences JSC, Kaiynbayeva R.A. ,   A.B. Bekturov Institute of Chemical Sciences JSC, Jussipbekov U.Zh. ,   A.B. Bekturov Institute of Chemical Sciences JSC, Berzhanov K.D. ,   A.B. Bekturov Institute of Chemical Sciences JSC, Bugubaeva G.O. ,   Almaty Technological University
Published: January 2024

The integrated use of mineral raw materials based on the processing of industrial waste is one of the most important tasks of modern technologies. In the phosphorus industry, such a problem is the disposal of toxic phosphorus-containing waste for fertilizers. The purpose of this work is to obtain potassium-containing fertilizers from phosphogypsum and сotrel “milk” filtrate. Results and discussion.Analysis of the results showed that from the technogenic waste of the phosphorus industry -filtrate of сotrel "milk" and gypsum using the acid method under ammoniation and drying conditions, it is possible to obtain fertilizers with a high potassium content, in which the sum of the nutritional components is represented by P, K and N. In terms of properties, the optimal fertilizers are products containing total P2O5at the level of enriched superphosphate and simple superphosphate. Conclusion.The possibility of obtaining potassium-containing phosphorus fertilizers with a high content of K2O (6.9%) from the filtrate of сotrel “milk” and phosphogypsum, in which practically P2O5is in a water-soluble form (97.5-97 rel.%), has been shown. It has been established that during the complex processing of сotrel “milk” by the acid method under drying conditions to obtain potassium-containing phosphorus fertilizers, the sum of the nutritional components is P2O5+ K2O+N 17.29-77.3%. Thus, from the filtrate of сotrel “milk” and phosphogypsum, potassium-containing phosphorus fertilizers were obtained containing total P2O5at the level of simple and enriched superphosphate, the phosphate part of which is represented almost entirely by the citrate-digestible form of P2O5.
AMMONIUM-SALT METHODS ARE THE BASIS FOR BUILDING EFFECTIVE NEW TECHNOLOGIES IN CHEMICAL AND METALLURGY INDUSTRIES
Authors:   SSE Chemical and Metallurgical Institute named after Zh.Abishev, Zhumashev K.J. , Narembekova A. ,   SSE Chemical and Metallurgical Institute named after Zh. Abishev, Serikbayeva A.K. ,   Yessenov University, Akkenzheeva A.Sh. ,   Yessenov University, Busurmanova A.Ch. ,   Yessenov University, Mauleshev A.A. ,   JSC "KazAzot"
Published: January 2024

The article contains new data, which is a continuation of the research for the development of scientific theoretical applied directions, which appeared in previous publications related to the field of chemical technologies and metallurgy. Previous studies have used ammonium salts as reagents for the production of synthetic sodium carbonate and fluorides, but this publication shows the possibilities of using them for the development of non-ferrous metallurgy. The purpose of the work is to show the importance of the anionic hydrogen atom contained in ammonium bisulfate (ABS) in entering the compound. Thermodynamic, thermal, renggenphase analysis and mathematical programs were used in the research methods. Physical and chemical changes in reaction mixtures, some synthesized salts when heated using the system derrivatograph Q-1000/D of the company" mom " F.Paylik, J. Paylik, L. Erdey and LabSys Evo were studied using special standardized factory structures such as TG-DTA/DSC (Setaram, France). The probability of some reactions occurring or not occurring was thermodynamically evaluated using the HCs-5.1 Chemistry (Outokumpu) "Astra-4" software package (complex). In the results of the study, the method of processing raw materials of non-ferrousmetals is presented in the form of a basic technological scheme.The possibility of formation of intermediate complex Tutton salts during production of the final product and reactions leading to their decomposition has been shown by thermodynamic studies. It is shown that the decomposition of such ammonium nickel sulfate salt releases ammonia into the melt of crystalline metal sulfate and ammonium bisulfate at about 235-260°С, where the pyrolysis of ammonium sulfate begins. It was observed that the by-products of (NH4)2Ni(SO4)2nickel ammonium Tutton's salt heated in the ABS melt up to 300-350°C are nickel sulfate and ABS melt, and ammonia also reacts upon re-cooling. It was experimentally determined that this "heating-cooling" process changes the color of ABS melt from lemon yellow to white. During the repetition of the process, it was found that this phenomenon is repeated until the excess melt is exhausted. This phenomenon is explained by the formation of nickel acid salt between nickel sulfate and ABS melt, which no one has studied before. It was concluded that this phenomenon should be common to ABS melt with sulfate of other metals.
CURRENT STATE OF METHODS FOR DETERMINING THE ADHESIVE AND COHESIVE PROPERTIES OF ROAD BITUMEN
Authors:   M. KozybayevNorth Kazakhstan University, Dyuryagina A.N. , Degert A.I. ,   M. KozybayevNorth Kazakhstan University, Lutsenko A.A. ,   M. KozybayevNorth Kazakhstan University, Shirina T.V. ,   M. KozybayevNorth Kazakhstan University
Published: January 2024

The sphere of transport infrastructure is developing rapidly, which underlines the importance of stable properties of bitumen in the construction of road surfaces. A necessary condition for improving the quality of the bitumen binder is its high adhesionto the surface of the mineral filler. The adhesion of bitumen with mineral filler is an important indicator that characterizes the quality of the asphalt concrete mixture, the performance characteristics of the asphalt concrete coating and its resistance to damage. An adequate assessment of these characteristics becomes a key factor in ensuring the durability and reliability of road surfaces. The article analyzes the current state of methods for determining the adhesive and cohesive characteristics of bitumen and mineral filler. The aimof the work is a thorough analysis of various methods used to evaluate the adhesive and cohesive properties of bitumen, with subsequent identification of their advantages and disadvantages. An overview of both traditional and modern approaches used to determine these characteristics is given to better understand the structure and behavior of bituminous materials. Conclusion. The article emphasizes the need for further research and development in the field of methods for determining the adhesive and cohesive properties of bitumen, considering modern requirements for road infrastructure. It is necessary to develop scientific and practical approaches to improving existing regulatory documents considering the characteristics of bituminous materials.It can be concluded that it is necessary to develop new accurate reproducible methods using computer technologies that automate data collection and processing and reduce the likelihood of errors.
PRODUCTION OF CARBONACEOUS MATERIALS USING COAL TAR RESIN AND INVESTIGATION OF THEIR SURFACE PROPERTIES
Authors:   A.B. Bekturov Institute of Chemical Sciences JSC, Kadirbekov K.A. , Buzaev N.A. ,   A.B. Bekturov Institute of Chemical Sciences JSC, Oralbaev N.N. ,   A.B. Bekturov Institute of Chemical Sciences JSC, Seitkhal G.G. ,   A.B. Bekturov Institute of Chemical Sciences JSC, Dadyka S. ,   Scientific and Engineering Research Center ERG LLP, Abyurov A.Zh. ,   Scientific and Engineering Research Center ERG LLP, Kim К.К. ,   Scientific and Engineering Research Center ERG LLP, Tusupkaliev E.A. ,   A.B. Bekturov Institute of Chemical Sciences JSC, Espenbetov A.A. ,   A.B. Bekturov Institute of Chemical Sciences JSC, Kainarbayeva Zh.N. ,   A.B. Bekturov Institute of Chemical Sciences JSC
Published: January 2024

The traditional technological process for creating highly porous materials from carbonaceous raw materials involves two stages of thermal treatment: carbonization (pyrolysis) and activation (gasification), aimed at forming a porous structure capable of adsorption. Combining both stages into a single process with chemical activation allows for efficient raw material utilization and control of the material's porous structure at different levels, providing the ability to customize its characteristics. The choice of a chemical activator depends on the type of raw material and the required characteristics of porous carbon materials. In this study, it is established that the analysis of surface properties of highly porous carbon materials synthesized from coal tar pitch, obtained by distillation of coal tar resin from JSC "Shubarkolkomir," confirms the outstanding operational characteristics of this material. The application of a combined process of carbonization and activation of coal tar pitch at an optimal temperature in an inert atmosphere leads to the formation of porous carbon materials with a high specific surface area: 561 (traditional method), 789 (chemical activation), and 881 m²/g (templating method), as well as a pore volume of 0.30; 0.40; and 0.48 cm³/g, respectively. This work not only expands the technological methods of obtaining carbon materials from coal tar resin but also underscores their potential for improving soil structure and increasing the efficiency of agricultural production.
NEW STEREOSELECTIVE CATALYSTS FOR THE HYDROGENATION OF SUNFLOWER OIL
Authors:   Al-Farabi Kazakh National University, Toshtay K. , Auyezov A.B. ,   Al-Farabi Kazakh National University
Published: January 2024

The work is devoted to the creation of new stereoselective catalysts for the hydrogenation of sunflower oil, which can significantly reduce the trans-isomers of fatty acids. Thus, on nickel catalysts used in industry, the content of trans-isomers of fatty acids reaches up to 30%. Platinum deposited on diatomite (processed natural clay) 0.2 to 1% is offered as a catalyst. Methodology. The hydrogenation was carried out in an autoclave, excluding external diffusion inhibition, at hydrogen pressures ranging from 0.25 to 1.0 MPa and temperatures ranging from 90 to 110°C. Results and discussion. Chromatographic analysis was used in all cases to determine the isomeric composition of fatty acids, making it possible for the first time to change hydrogen pressure and reaction temperature without changing the isomeric composition. This allows the study of how stereoisomeric composition changes during the hydrogenation of fatty acids. Various physical methods are used to verify catalysts: TPD, BET, and TEM, etc., which can determine catalyst particle size, hydrogen adsorption forms, and specific surfaces. Conclusion. These characteristics were correlated with the activity and stereoselectivity of the studied catalysts. Trans-fatty acids are found to be two to three times lower on platinum catalysts than on nickel catalysts.