bluuebunny/crossref_metadata_2025_split huggingface dataset:
CRUSHED ROCK STRENGTH TESTING AT IRON RIDGE DEPOSIT
Authors: БАБЕЛЛО В.А. , ЛИЗУНКИН В.М. , ЛИЗУНКИН М.В. , СОБОЛЕВ С.А. 
Published: September 2024

Для расчета устойчивости ограждающей дамбы хвостохранилища проведены экспериментальные исследования раздробленных скальных пород на крупногабаритном стенде методом среза целиков. Определены их прочностные свойства при различных значениях гранулометрического состава и плотности, а также диаметра срезных колец и нормального давления. Установлено, что угол внутреннего трения раздробленных скальных пород в уплотненном состоянии изменяется в диапазоне 35 -40°, сцепление от 0.0256 до 0.0293 МПа, в неуплотненном состоянии в диапазоне 25 - 30° и от 0.0163 до 0.0184 МПа соответственно.
Crushed rock shear tests are carried out to determine stability of a tailings pond dam. The tests allow finding the rock strength at different grain composition and density of rocks, as well as at different shear ring diameters and normal pressures. It is found that the internal friction angle and cohesion range as 35-40° and 0.0256-0.0293 MPa, respectively, in compacted rocks, and as 25-30° and 0.0163-0.0184 MPa, respectively, in uncompacted rocks.
ACTION CHART AND MAIN CONTROLLABLE PARAMETERS OF DUTY CYCLE OF PNEUMATIC PERCUSSION MACHINE
Authors: ПЛОХИХ В.В. , ДАНИЛОВ Б.Б. , ЧЕЩИН Д.О. 
Published: September 2024

Проведен анализ конструктивных схем пневматических ударных машин и обосновано применение пневмоударной машины, созданной на основе комбинированного воздухораспределения с использованием упругого клапана, для реализации адаптивных технологических процессов. Представлены результаты теоретических и экспериментальных исследований динамики рабочего цикла пневмоударного устройства с возможностью регулировки его энергетических параметров в процессе работы.
The structural layouts of pneumatic percussion machines are reviewed. The use of a pneumatic percussion machines with mixed-type air distribution via elastic valve is substantiated for implementation of adaptive technologies. The authors present the theoretical and experimental studies into dynamics of duty cycle of a pneumatic percussion tool with on-line power adjustability.
SELECTING ORGANIC COLLECTORS FOR LUMINOPHORE-BEARING MODIFYING AGENTS TO EXTRACT WEAKLY FLUORESCENT DIAMONDS
Authors: МОРОЗОВ В.В. , ЧАНТУРИЯ В.А. , ДВОЙЧЕНКОВА Г.П. , ЧАНТУРИЯ Е.Л. , ПОДКАМЕННЫЙ Ю.А. 
Published: September 2024

Получены зависимости спектрального распределения мощности люминесцентного излучения и спектрально-кинетические характеристики сигнала рентгенолюминесценции органических коллекторов, обосновывающие возможность их применения в составе реагентов-модификаторов. На основе комплексной оценки эффективности органических жидкостей по их адгезионной способности к алмазам и экстракционной способности к неорганическим люминофорам выбраны следующие органические коллекторы: дизельная техническая фракция, тяжелый газойль каталитического крекинга, их смеси. Установлена возможность замещения спектральных функций органических люминофоров содержащимися в органических коллекторах полиароматическими углеводородами, которые формируют интенсивный сигнал, близкий к сигналу органических люминофоров. Показана высокая эффективность реагентов-модификаторов, включающих в состав композиций органические коллекторы и гидрофобизированные люминофоры Э-515-115-Г5 и ФЛ-530-Г3. В качестве органического коллектора применялась смесь тяжелого газойля каталитического крекинга и дизельной технической фракции в соотношении 6:1 - 9:1. Извлечение слабо- и аномально люминесцирующих алмазов составило 80 -90 %, кимберлита не более 1 %. Полученные результаты позволяют рекомендовать разработанные реагенты-модификаторы для применения в промышленных схемах рентгенолюминесцентной сепарации алмазосодержащего материала.
The authors have correlated the fluorescence spectrum with the spectrum and kinetics of X-ray luminescence of organic collectors. The correlations prove applicability of organic collectors with modifying agents. From the integrated evaluation of organic liquids by the criteria of their adhesion capacity relative to diamonds and extraction capacity relative to inorganic luminophores, the selected organic collectors are: diesel, heavy gasoil of catalytic cracking, and their mixture. The spectral functions of organic luminophores contained in organic collectors are replaceable with polyaromatic hydrocarbons which generate intense signals similar to the signals of organic luminophores. Efficiency of modifying agents containing organic collectors and hydrophobic luminophores E-515-115-G5 and FL-530-GZ is high. The test organic collector was heavy gas oil of catalytic cracking and diesel fraction at a ratio of 61-9:1. Recovery of weakly and abnormally fluorescent diamonds was 80-90%, while recovery of kimberlite was not higher than 1%. The results allow recommending the developed modifying agents for the commercial-scale X-ray luminescence separation of diamond-bearing materials.
FUNCTIONALIZED MAGNETIC NANOSORBENTS FOR COPPER EXTRACTION FROM SOLUTIONS
Authors: БРАГИН В.И. , БАКШЕЕВА И.И. , ПЛОТНИКОВА А.А. , БУРДАКОВА Е.А. 
Published: September 2024

Обоснована перспективность использования функционализированных магнитных наночастиц для извлечения металлов из технологических растворов и кондиционирования промышленных сточных вод. Приведены результаты экспериментальных исследований по извлечению меди из растворов с использованием магнитного наносорбента на основе магнетита, функционализированного тиоктовой кислотой. Определены характеристики сорбции в зависимости от исходной концентрации растворов в сравнении с нефункционализированным наноразмерным магнетитом. Описан механизм формирования медьсодержащего осадка, включающий хемосорбцию на активных центрах тиоктовой кислоты, сорбцию на чистой поверхности магнетита и дальнейшую перекристаллизацию сорбата в собственные минеральные медьсодержащие фазы. Изучен фазовый состав меди в осадке, показана возможность ее извлечения. Предложена технология кондиционирования медьсодержащих растворов. При стадиальном использовании магнитного наносорбента достигается очистка технологических растворов до норм предельно допустимых концентраций с одновременным получением концентрата для последующей гидрометаллургической переработки.
The article proves the promising nature of using functionalized magnetic nano particles in extraction of metals from process solutions and in treatment of industrial effluents. The experimental copper extraction from solutions using a magnetic nanosorbent made of lipoic acid-functionalized magnetite is described. Sorption efficiency is determined as function of the initial concentration of solutions as compared with non-functionalized nano-size magnetite. The copper-bearing sedimentation mechanism includes chemosorption at active centers of lipoic acid, adsorption at clean magnetite surface and re-crystallization of sorbate in intrinsic copper-bearing phases. The phase composition of copper in the sediments is examined, and the copper extractability is illustrated. The conditioning technology is proposed for copper-bearing solutions. The stage-wise use of the magnetic nanosorbent enables process solution purification up to the maximum allowable concentration at simultaneous production of a concentrate suitable for hydrometallurgical processing.
POST-LEACHING OF SILVER FROM A NON-SULFIDE LEAD-ZINC ORE FLOTATION TAILING LEACH RESIDUE IN A COPPER-AMMONIUM THIOSULFATE SOLUTION: A FUZZY LOGIC PREDICTION
Authors: ХУССАИНИ Ш. , ТИТА А.М. , КУРСУНОГЛУ С. , КУРСУНОГЛУ Н. , ТОП С. , КАЯ М. 
Published: September 2024

Рассмотрен метод выщелачивания серебра. Установлена высокая доля растворения серебра 89.7% при концентрации тиосульфата аммония 30 г/л, концентрации сульфата меди 0.5 г/л, температуре выщелачивания 25 °C, продолжительности выщелачивания 4 ч. Построена модель прогнозирования условий растворения серебра на базе нечеткой логики. В качестве критериев выбраны: концентрация тиосульфата аммония, сульфата меди и продолжительность выщелачивания. Данная модель хорошо согласуется с экспериментальными данными. Полученные результаты позволяют применять моделирование на базе нечеткой логики для прогнозирования параметров выщелачивания серебра из хвостов обогащения.
The post-leaching of silver (Ag) from a non-sulfide lead-zinc (Pb-Zn) ore flotation tailing leach residue in a copper-ammonium thiosulfate solution was investigated. Ag (89.7%) was extracted into the leaching solution under the following conditions: 30 g/l ammonium thiosulfate, 0.5 g/l copper sulfate, 25°C leaching temperature and 4 h leaching time. On the basis of the experimental results, a fuzzy logic prediction was made. Ammonium thiosulfate, copper sulfate and leaching period were chosen as predictive criteria in this step. The fuzzy prediction model was found to be very consistent with the experimental data (R2:0.9657). Based on these findings, the application of the fuzzy logic prediction approach to the silver dissolution from the leach residue could be considered.
IMPACT OF INCREASED WATER INFLOW ON MAIN DRAINAGE SYSTEM EFFICIENCY IN MINE
Authors: ОВЧИННИКОВ Н.П. , ЗЫРЯНОВ И.В. 
Published: September 2024

Рассмотрено влияние водопритока на работу главной водоотливной установки подземного рудника “Удачный” АК “АЛРОСА”. Установлено, что содержание твердых частиц в шахтных водах повышается при росте водопритока в рудник. Предложен способ по недопущению попадания в рудник в теплое время года дополнительного водопритока, обусловленного планируемым демонтажем одной из насосных станций из-за осыпей бортов нерабочего карьера. Рассчитан ожидаемый срок окупаемости предлагаемого технологического решения.
The article analyzes the impact of water inflow in a mine on the efficiency of the main mine water drainage system as a case-study of Udachny Mine, ALROSA. It is found that the content of solid particles in mine water grows with the increasing water inflow in the mine. A method is proposed to eliminate excessive water inflow in the mine in warm season in case of a pumping station teardown because of the spoil bank slide. The expected payback time of the proposed engineering solution is calculated.
¿Qué proponen los médicos para mejorar la coordinación entre niveles? Resultados en seis países de Latinoamérica
Authors: Oliver Anglès Aida , Vargas Lorenzo Ingrid , López Vázquez Julieta , Chagas Samico Isabella , Campaz Landazábal Daniela , Mogollón Pérez Amparo-Susana , Eguiguren Bravo Pamela , Amarilla Delia Inés , Bertolotto Fernando , Vázquez María Luisa 
Published: September 2024

Objetivo Analizar las estrategias para la mejora de la coordinación clínica propuestas por medicos/as de atención primaria (AP) y especializada (AE) de redes públicas de servicios de salud de seis países de América Latina, y sus cambios entre el 2015 y 2017.
Métodos Se analizaron dos estudios transversales basados en encuestas (2015 y 2017) con aplicación del cuestionario COORDENA a un total de 4 311 médicos/as de atención primaria y especializada de dos redes públicas de servicios de salud de cada país. Se realizó un análisis descriptivo estratificado por país y año de las sugerencias propuestas.
Resultados En todos los países se señala la introducción o mejora de estrategias y mecanismos que facilitan la interacción y el conocimiento mutuo entre profesionales de distintos niveles, especialmente las reuniones conjuntas internivel, los mecanismos de comunicación directa y estrategias para fortalecer el uso de la hoja de referencia y contrarreferencia. Con menor frecuencia, se sugieren otras estrategias organizativas orientadas al fortalecimiento del modelo de atención primaria, la mejora del acceso a atención especializada y la coordinación del nivel directivo de la red.

Conclusiones Los resultados permiten generar recomendaciones para la mejora de la coordinación clínica en distintos sistemas de salud, a partir de las sugerencias de los médicos/as, una perspectiva poco tenida en cuenta en el diseño e implementación de intervenciones en los servicios de salud. Se señala la necesidad de promover estrategias basadas en la retroalimentación mutua en la elaboración de políticas públicas sanitarias.
Pedagogía crítica racial en el cómic español / Critical Racial Pedagogy in Spanish Comics
Authors: Claudio Moreno Ester 
Published: September 2024

In this paper, I study racial representation and antiracist narratives on comics as critical public pedagogy. I analyze how Spanish artists depict a set of racializing and “othering” processes through the lense of critical public pedagogy, Critical Race Theory and comics studies on race. I provide three approaches on three different sets of comics: the construction of the “other” in comics funded by humanitarian organizations, humor as critical public pedagoy and autobiography as an exploration of racializing processes. The aim of this article is to contribute to discussions about inclusion, diversity and representation in comics that are already well-established and expanding outside Spain but hardly developed in the national context.
Extending the Modified Square-Root-Impedance Method for the Development of Site Amplifications Consistent with the Full-Resonance Approach to a Range of VS30 Values
Authors: Al Atik Linda , Boore David M. 
Published: September 2024

ABSTRACT
The square-root-impedance (SRI) method is commonly used to approximate the seismic site amplifications computed using the full-resonance (FR) method for gradient shear-wave velocity (VS) profiles that are smoothly varying with depth. The SRI site amplifications have been observed to systematically underpredict the FR site amplifications by a ratio of FR/SRI amplifications around 1.05 to 1.3 across a wide frequency range (Boore, 2013). Recently, Boore and Abrahamson (2023; hereafter, BA23) related this difference in the SRI and FR methods to differences in the exponent η of the ratio of seismic impedances between the two methods. They proposed the implementation of a modified frequency-dependent η in the SRI method to improve its match to the FR site amplifications. This modified η was derived using only five VS profiles. We investigate the performance of the BA23 η for a wide range of realistic gradient VS profiles with VS30 ranging from 180 to 1500 m/s. These gradient VS profiles are constructed using two power-law functions of depth and are constrained by the assigned VS30 value, the depth and velocity of the half-space, and depths to shear-wave velocity horizons of 1.0 and 2.5 km/s (Z1.0 and Z2.5) based on western United States sites. Despite observing a VS30 dependence of η, we find that the BA23 η generally works reasonably well for the range of VS profiles analyzed. Using the VS30-dependent η derived in this study results in improvements in matching the FR site amplification compared to using the BA23 η. These improvements are more pronounced for the soft-site conditions and become modest to negligible for the stiff site conditions.
Giant cervical fibroid in a perimenopausal women: a rare case report
Authors: K. Jaya Rakini , Ravichandran Vidhya 
Published: September 2024

Uterine leiomyomas, are smooth muscle neoplasms and the most common benign gynaecological tumour prevailing in 70-80% of women reaching 50 years. Fibroids contribute to 40-60% of hysterectomies performed all over the world. Most of the fibroids are situated in the body of the uterus, but only 1 to 2% of cases, they are confined to cervix. Most of the patients remain asymptomatic but in patients with large fibroids mostly present with pressure symptoms depends upon location of fibroid. Cervical leiomyoma is mostly single and are subserous or interstitial in origin. They arise either from vaginal or supra-vaginal portion of cervix. We report a case of cervical fibroid in perimenopausal parous women with anaemia proceeded with laparotomy after anaemia correction. It showed a huge fibroid arising from the posterior cervix with uterus pushed anteriorly. Enucleation followed by abdominal hysterectomy was done. Large cervical fibroids are rare, presenting with surgical difficulties. Careful dissection by expert hands is needed in the management of such cases. Patient had an uneventful post-operative recovery.
Evaluation of antimicrobial efficacy of zinc oxide nanoparticles synthesised using oil containing apple seed oil formulation against oral pathogens: An in vitro study
Authors: Chhabra Chaya , Stanley Berachah , Rana Swati , Sana Zahid , Phalke Manan 
Published: September 2024

Zinc oxide nanoparticles (ZnO NPs) are known for their antimicrobial properties and are widely used in medical and dental applications. Combining ZnO NPs with natural oils, such as apple seed oil, offers potential benefits against oral pathogens. This study explores the antimicrobial efficacy of ZnO NPs synthesized using apple seed oil.To evaluate the antimicrobial efficacy of zinc oxide nanoparticles synthesized using apple seed oil against , , and .This in-vitro study was conducted in a controlled laboratory environment to assess the antimicrobial properties of ZnO NPs combined with apple seed oil against selected oral pathogens.Zinc oxide nanoparticles were synthesized from zinc sulfate heptahydrate and sodium hydroxide, followed by calcination. These nanoparticles were dispersed in apple seed oil. The agar cup diffusion method was used to test antimicrobial activity against Streptococcus mutans, , and by applying different concentrations (25μL,50μL,100μL) of the nanoparticle-oil mixture to bacterial cultures. The diameters of the inhibition zones were measured to determine antimicrobial efficacy. Data were analyzed to compare the effectiveness of varying concentrations of ZnO NPs in apple seed oil against the pathogens.The study revealed that zinc oxide nanoparticles in apple seed oil in varying concentrations (25μL, 50μL,100μL) did not show significant antimicrobial activity against , , or . No discernible zones of inhibition were observed for any tested concentrations, indicating a lack of efficacy.Zinc oxide nanoparticles synthesized with apple seed oil did not exhibit significant antimicrobial properties against the tested oral pathogens. This combination appears ineffective under the study conditions. Further research is needed to explore alternative formulations and understand interactions between antimicrobial agents and bacterial strains to develop effective treatments for oral infections.The findings of this study indicate the combination of zinc oxide Nano particles and apple seed oil does not show any significant results; it showed neither increase nor decrease in the growth of root canal pathogens. Further in vivo studies are required to gain understanding of its exact efficacy.
Fosfomycin for treating Escherichia coli UTIs: Results from a tertiary hospital
Authors: Pandya Himani Bhardwaj , Norris Saurabh Chhotalal , Mavani Monika Lavjibhai , Patel Dhwani Vasantkumar , Javadekar Tanuja Bakul 
Published: September 2024

Urinary tract infections (UTIs) arise due to the infiltration of microorganisms into the urinary system. The rising incidence of antibiotic resistance among UTI pathogens has narrowed the range of effective treatment options. Fosfomycin has been recognized as a potential alternative in the face of increasing resistance. This research focuses on evaluating the in vitro effectiveness of Fosfomycin against gram-negative bacteria isolated from urinary tract infections (UTIs) This retrospective study was carried out at the tertiary care hospital in Vadodara, Gujarat from 1 Jan 2022 to 31 Oct 2022. Out of 256 urine cultures that tested positive for microorganisms, 125 isolates (62.8%) were identified as and were included in the study. Standard laboratory techniques were used for bacterial identification, and the VITEK 2 compact system was employed for antimicrobial sensitivity testing. The sensitivity of Fosfomycin was assessed using the disc diffusion technique with a 200 µg disc (Himedia), and the results were interpreted by measuring the zone of inhibition. Fosfomycin showed a sensitivity rate of 96% against . Among extended-spectrum beta-lactamase (ESBL)-producing strains, Fosfomycin demonstrated a sensitivity rate of 91.4%. Fosfomycin presents a valuable option for treating UTIs, particularly those caused by , including strains that produce ESBLs.
Identification of Candida species from blood samples of neonates by PCR-RFLP method in Western U.P
Authors: Dutta Gunjan , Verma Kamya , Kaur Kanwaljit , Bareja Rajesh 
Published: September 2024

Correct identification of Candida species is necessary for actual therapy and epidemiology study. species is the most frequent emerging cause of fungal infections globally. The most common cause of Candidemia worldwide is albicans, however, non- (NCA) species like being reported To identify the different species of from blood specimen of neonates by PCR-RFLP technique.Total 27 isolates were collected from blood samples of neonates. All the clinical specimens were inoculated for the isolation of species using standard mycological techniques. The isolates were cultured on Sabouraud’s Dextrose Agar (SDA) and further, they were identified by PCR and RFLP method.Molecular methods like PCR-RFLP were used in identifying six important species () from blood. By using universal primers ITS-1 and ITS-4, PCR assay successfully amplified the ITS-1 and ITS-2 region of 27 isolates and the amplicon size of approximately 510-870 bp. This method is speedy, easy, and affordable which can be used in routine laboratory diagnostics for the quick isolation of Candida species from blood samples.It is helpful for clinicians to start actual therapy in Candidemia patients before antifungal sensitivity results are obtainable.
Assessing the effectiveness of direct susceptibility testing from positive blood culture broth using the VITEK-2 system
Authors: Sastry Apurba S , Kumaresan Mahalakshmi , Dhandapani Sarumathi , Padhy Sonali , Priyadarshi Ketan 
Published: September 2024

Bloodstream infections (BSIs) are prevalent in intensive care units, often requiring timely diagnosis and treatment. Traditional methods of diagnosing bacteraemia, including Gram staining, subculture, and antibiotic susceptibility testing (AST), can yield results in 12-48 hours. The advent of MALDI-TOF MS has expedited bacterial identification from colonies. Recently, methods to directly identify bacteria from positive blood cultures using MALDI-TOF MS have emerged. This study compared the findings of traditional colony-based AST with the VITEK-2 automated testing technology for direct AST from the blood culture broth.Blood cultures were processed using BacT/Alert Virtuo. Aerobic-positive cultures showing single organism types were subjected to direct identification and susceptibility with VITEK MS and VITEK 2, respectively. The methodology involved lysis centrifugation and on-plate extraction for MALDI-TOF MS identification, followed by AST using VITEK 2.A total of 60 isolates, comprising 44 Gram-negative and 16 Gram-positive bacteria, were included. This study tested 902 drug-bug combinations, revealing better categorical agreement for Gram-negative (93.7%) than Gram-positive organisms, which showed higher error rates, particularly with Vancomycin, Linezolid, and Oxacillin for and Cefepime for . The results highlight that VITEK 2 and MALDI-TOF MS allow identification on the same day and whole panel AST from positive blood cultures, cutting the turnaround time by a day compared to traditional methods. This rapid approach facilitates timely and targeted antimicrobial therapy, potentially improving patient outcomes and antimicrobial stewardship. However, larger studies are needed to validate these findings, especially for Gram-positive isolates.