bluuebunny/crossref_metadata_2025 huggingface dataset:
YAT TURİZM ŞİRKETLERİ İÇİN YELKENLİ TEKNE SEÇİMİ KRİTERLERİNİN BELİRLENMESİ
Authors: Arıcan Ozan Hikmet
Published: June 2024

Deniz turizmi, Türkiye'de giderek daha önemli bir sektör haline gelmektedir, özellikle Covid-19 salgını sonrasında insanlar sosyal etkileşimden uzak yaşam alanlarına yönelmeye başlamışlardır. Bu eğilim, özellikle karavan ve yelkenli tekne gibi araçlara doğru yoğunlaşmıştır. Yat sınıfı tekneler genellikle yüksek maliyetli olarak bilinirken, yelkenli tekneler motorlu yatlara kıyasla daha ekonomik ve orta gelir düzeyine sahip kişilere daha uygun bir deniz aracı olarak görülebilir. Bu tip deniz araçlarındaki uygun maliyetlere turizm şirketleri de büyük ilgi göstermektedir. Özellikle yelkenli teknelerin turizm şirketleri tarafından işletilmesinde hızlı bir artış gözlemlenmektedir. Ancak, şirketler için en uygun yelkenli teknenin seçimi bir problem olarak karşımıza çıkmaktadır, çünkü çok sayıda marka ve tercih kriteri bulunmaktadır. Bu problemin çözümü için sektörel bazda araştırmalar yapılmış ve ikinci el yelkenli tekne seçiminde belirleyici olan ana kriterler arasında ekonomik faktörler, konfor, kullanım kolaylığı ve tekne malzemesi yer aldığı tespit edilmiştir. Bu ana kriterler, deniz turizmi şirketleri için en uygun ve tatmin edici yelkenli teknenin/teknelerin seçilmesinde belirleyici olabilmektedir. Bu konuda yapılan çalışmada, çok kriterli karar verme yöntemlerinden en yaygını olan Bulanık AHP yöntemi kullanılmıştır. Uzmanlardan alınan verilerle yelkenli tekne seçiminde en önemli ana kriterler Kullanım kolaylığı ve materyal olarak tespit edilmiştir. Yelkenli tekne seçiminde en önemli alt kriterler 'makine markası', 'arma yapısı ve durumu', 'yelken alanı ve adeti', 'fiber durumu', 'yelken türü' olduğu sonucuna ulaşılmıştır. Bu kriterler ile yelkenli tekne seçiminde kullanım açısından kolaylık ve teknenin malzeme yapısının sağlamlığı konusunda bilgilerin seçim tercihinde önemli olduğunu göstermektedir. Bu bulgular, yelkenli tekne işleten turizm firmalarına daha bilinçli ve öncelikli tercihler yapmaları için rehberlik edecektir.
Ekstra ovaryen dev fibrotekoma; 19 yaşında genç kadın, hasta olgu sunumu
Authors: Derinöz Ali , Genç Ertuğrul , Çöl Cavit
Published: June 2024

Bu çalışmada 19 yaşında genç kadın hastada görülen ekstra ovarian fibrothecoma olgusu sunulmuştur. Hasta bize karında hafif ağrı, dev abdominopelvik kitle, yaygın peritoneal asit ile başvurdu Kan tetkiklerin yüksek CA-125 düzeyi dışında normaldi. USG kılavuzluğunda yapılan perkütan tru-cut bx tanısı mezenkimal tümör idi, ancak asitt sitolojisinde tümör hücresi tespit edilemedi. Hastaya kitle eksizyonu ile birlikte sol salpingo-ooferektomi uygulandı. Patolojik tanı benign fibrotekoma olarak rapor edildi. Postoperatif dönem komplikasyonsuz seyretti. İzlem döneminde yüksek CA-125 düzeyi normal düzeylere indi.
Anahtar sözcükler: Fibrotekoma, CA-125, over
Complejidad e interdisciplinariedad como factor clave para el emprendimiento y desarrollo del diseñador
Authors: Morales-Holguín Arodi
Published: June 2024

En este trabajo se aborda el momento que vive el diseño como actividad relevante; dinámica en la que el diseñador y su trabajo paralelamente suelen ser mal valorados.
Modelo teórico-metodológico de diseño paramétrico
Authors: Mancilla González Eréndida C. , Guerrero Salinas Manuel
Published: June 2024

El diseño gráfico es una disciplina que ha estado en constante evolución, actualmente el impacto tecnológico ha generado cambios radicales en la forma de concebirlo y materializarlo, desde hace algunas décadas el uso de la programación en los procesos de diseño se ha ido implementando en áreas como la ingeniería, la arquitectura, el diseño industrial y gráfico.
Особенности развития потребительской кооперации в	РФ: роль информационного обеспечения
Authors: Медведева Н.В.
Published: June 2024

Актуальность: в условиях экономического давления и введения антироссийских санкций у потребительской кооперации есть все предпосылки для расширения деятельности в сфере продовольственного обеспечения. При этом наблюдается ситуация, при которой население не всегда осознает и понимает роль потребительской кооперации в развитии страны в новых экономических условиях, а государство недооценивает значимость потребительской кооперации в снабжении населения продовольствием и оказании социальных услуг. Потенциал потребительской кооперации остается невостребованным. Цель: определение уровня знаний граждан о потребительской кооперации с учетом региональной дифференциации. Гипотеза исследования заключается в предположении о том, что от уровня осведомленности населения о потребительской кооперации зависит готовность граждан принимать в ней участие. Методы: методы обобщения, анализа документов, сравнительного анализа, анкетный опрос населения (ключевой метод). Результаты: выявлена степень осведомленности населения о потребительской кооперации, а также определены приоритетные источники получения информации о ней. Вывод: в настоящее время наблюдается средний уровень информированности граждан РФ о потребительской кооперации. Лишь около половины опрошенных осведомлены о данном понятии. Была выявлена зависимость между уровнем знаний респондентов о потребительской кооперации и их желанием принять участие в подобных практиках. Основными источниками получения информации о ней являются официальные СМИ, официальные порталы Центросоюза, социальные сети/цифровые сообщества субъектов потребительской кооперации, а также информационные и новостные порталы, содержащие новости района.
Система долговременного ухода как фактор улучшения социально‐экономического положения пенсионеров и инвалидов в РФ
Authors: Некипелова Д.В.
Published: June 2024

Увеличение доли населения пенсионного возраста в демографической структуре России обостряет вопросы обеспечения достойного уровня и качества жизни таких граждан. На первый план выходят аспекты не только материального обеспечения (хотя и оно находится на не очень высоком уровне относительно международных стандартов), но и аспекты обеспечения качественного медицинского обслуживания, заботы, помощи и, при необходимости, ухода. Цель: оценить влияние развития системы долговременного ухода на социально‐экономическое положение лиц пенсионного возраста. Методы: сравнительный анализ, анализ статистических данных, контент‐анализ, обобщение и синтез данных. Результаты: доля лиц пенсионного возраста увеличивается, а их материальное состояние ухудшается. Для того чтобы сохранить достойный уровень жизни после достижения пенсионного возраста, многим пенсионерам приходится продолжать работать. При этом по мере старения у людей развиваются возраст‐ассоциированные заболевания, последствиями которых являются необходимость обеспечения таким гражданам дополнительной помощи, заботы и даже ухода. Данные услуги оказываются в рамках действующей системы здравоохранения и по линии органов социальной защиты, однако статистические данные говорят об очень низком уровне охвата пенсионеров такими услугами и достаточно высоким спросом на них. Основная нагрузка по уходу ложится на трудоспособных родных и близких, что сказывается на их занятости. Реализация в отдельных регионах страны пилотного проекта по внедрению системы долговременного ухода дала положительные результаты в виде улучшения физического и психоэмоционального состояния как получателей таких услуг, так и их родственников, осуществляющих уход. Таким образом, сделан вывод о важности развития системы долговременного ухода как постоянной части социального обеспечения пожилых граждан с целью повышения качества и уровня жизни не только пожилых людей, но и их семей.
Diseño de un dispositivo inteligente para minimizar el tiempo de atención de adultos mayores accidentados
Authors: Cordero Aguilar Nahomi , Mullings Watson Keziah , Villalobos Frino Tatiana
Published: June 2024

Las caídas son la segunda causa de muerte a nivel mundial, siendo las personas de tercera edad quienes más las sufren; por lo cual se creó Auximax, un dispositivo inteligente para ser utilizado diariamente, sin llegar a ser intrusivo.
Dicho dispositivo inteligente cuenta con la capacidad de disminuir el tiempo de auxilio en caso de accidente por medio de una alarma automática y, por ende, reducir consecuencias o secuelas mayores debido a caídas, golpes, lesiones o cualquier afección física de semejante naturaleza. Cuenta con un pulsómetro y una alarma inteligente capaz de detectar movimientos bruscos o situaciones de riesgo basado en las palpitaciones del paciente. Además, cuenta con una interfaz de celular para uso de los familiares/cuidadores y una interfaz gráfica para el dispositivo, permitiendo así que tanto el adulto mayor como su cuidador puedan monitorear a tiempo real cualquier situación dada según el nivel cardiaco, ya que comúnmente un corazón acelerado es una señal de alerta antes, durante y después de cualquier situación de riesgo
Es importante denotar que el principal impacto que pretende ejercer este dispositivo inteligente es asegurar una fuente de ayuda amigable con el usuario y, a la vez, reducir los tiempos de respuesta de auxilio para población de edad avanzada que comúnmente tiene padecimientos como la diabetes, hipertensión, demencia, ansiedad entre otros; quienes, ante una caída, podrían ser presa de males mayores secundados por cualquiera de estas patologías.
Evaluación de la usabilidad de transferir dinero utilizando el servicio de Sinpe Móvil del aplicativo de una entidad bancaria costarricense
Authors: Camacho-Mata Nicole
Published: June 2024

El objetivo principal de este artículo es describir el proceso de evaluación de usabilidad de la interfaz del servicio de Sinpe Móvil, a partir de la aplicación móvil de una entidad bancaria costarricense; es decir, se analizó el grado en el que el diseño de la interfaz de dicho producto digital puede ser utilizado por los usuarios afiliados para realizar transferencias de dinero. Este análisis se realizó a partir del estudio de la eficacia, eficiencia y satisfacción, como métricas de la usabilidad, las cuales buscan evaluar sistemas, productos o servicios desde la perspectiva y experiencia de los usuarios. Dicho proceso fue regido por una metodología basada en las normas ISO 9241-11 e ISO-IEC 25062, enfocadas en la usabilidad de los sistemas y en la presentación de resultados de pruebas.
Los principales hallazgos determinaron que el sistema analizado es efectivo para la realización de transferencias de dinero entre usuarios afiliados al servicio, es decir, presenta un equilibrio entre la eficacia y la eficiencia de su funcionamiento, apoyado por el diseño de la interfaz y la experiencia ofrecida por el producto. Además, genera satisfacción en los usuarios, siendo calificada como fácil de usar, a pesar de que se presentaron algunas limitaciones técnicas propias del sistema, las cuales se identificaron y, a modo de recomendación, se definieron como posibles mejoras.
COVID-Related Financial Issues Experienced by Women-Identifying Survivors of Intimate Partner Violence
Authors: Johnson Laura
Published: June 2024

The COVID-19 pandemic has had significant impacts on the economic well-being of women, particularly those experiencing intimate partner violence (IPV). While some scholars have included common economic risk factors in their studies on COVID-related IPV experiences, fewer have looked specifically at the nature of the financial issues experienced. As such, the purpose of this study was to better understand the types of financial issues that survivors experienced because of the COVID-19 pandemic and their association with different forms of IPV. In July 2022, a sample of 571 women-identifying IPV survivors living in the United States participated in an online survey via Qualtrics panel service. The mean age of participants was 42, and 69% identified as White, non-Hispanic. On average, participants experienced approximately three COVID-related financial issues. After controlling for sociodemographic characteristics, economic abuse and economic abuse-related financial debt were both significantly associated with COVID-related financial issues. Study findings have important implications for economically supporting IPV survivors through research, policy, and practice.
Presencia del virus de la rabia en murciélagos no hematófagos en México
Authors: Calderón-Patrón Jaime Manuel , Cornejo-Latorre Cristian , Rosas Pacheco Luis Fernando , López González Carlos Alberto
Published: June 2024

The presence of the rabies virus and antibodyes in bats from the Americas is mainly associated with hematophagous species; however, this virus has also been detected with low frequency in bats with other feeding habits. The same thing happens in Mexico, although there is no updated information on the species that have been infected by this virus. Due to the public health implications of the subject, in this study we explore how the presence of the rabies virus is related to eating habits, the family to which they belong, the size of the distribution area and the type of refuge used by bats. Based on a review of the scientific literature published from 1954 to 2015, seven families, 24 genera, and 40 species of non-hematophagous bats that have been detected with rabies virus in Mexico. Most are insectivorous (63%) and belong to the Phyllostomidae and Vespertilionidae families (68%). The presence of rabies is positively and significantly related to the number of species per family (r = 0.9, p < 0.005) and type of feeding habit (r = 0.97, p < 0.002) but is not related to the size of its distribution area (r = 0.2, p = 0.2). Cases of rabies in non-hematophagous species in Mexico are rare, and do not represent a risk of transmission to humans.
Propiedades nutrimentales, fitoquímicas y sensoriales de frutos de aguacate criollo de Parras de la Fuente, Coahuila
Authors: Chávez-García Stephany Nefertari , De León-García Patricia Guadalupe , Campos-Múzquiz Lizeth Guadalupe , Flores-Gallegos Adriana Carolina , Castillo-Godina Rocío Guadalupe , Ascacio-Valdes Juan Alberto , Lopez-Badillo Claudia Magdalena , Rodríguez-Herrera Raúl
Published: June 2024

The city of Parras de la Fuente, Coahuila is characterized by having criollo avocado trees with different morphological properties. However, very little information is available on their fruit nutritional and sensory characteristics. The objective of this work was to perform the bromatological, mineral, phytochemical and sensory characterization of 7 avocado landraces. The proximal analysis was carried out using standardized tests by the AOAC (2019), while the phytochemical content was determined using HPLC/MS equipment. Subsequently, the samples were evaluated using a hedonic test. The bromatological analysis showed significant differences in the total of the samples for the different response variables, which indicates the great genetic diversity among the sampled trees. The mineral that were determined in the highest concentration were Potassium, Magnesium and Calcium. Thirty-eight different phytochemical compounds were identified in the fruits, with a greater presence of flavones. While the sensory analysis showed a significant difference among the avocado landraces for the evaluated attributes. The flavor and texture attributes were the most important for the consumer preference. Different environmental factors (soil, climate, altitude, latitude, maturity) modify the nutritional composition of the avocado and its organoleptic characteristics. The results of this work may help propagation, fruit diversification and development of companies focused on this fruit in Parras de la Fuente, Coahuila.
Impacto del cambio climático en la producción de café en Veracruz bajo un enfoque Ricardiano
Authors: Guerrero-Carrera Jesús , Hernández-Flores José Alvaro
Published: June 2024

The phenomenon of climate change has generated significant adverse consequences on coffee productivity and the income of producers around the world. The present study aims to evaluate the potential repercussions of climate change on coffee production in the Las Montañas region, Veracruz. To carry out this analysis, socioeconomic and environmental data were collected during the years 2022 and 2023, through a survey applied to a sample of 91 production units specialized in coffee cultivation. These data were subjected to ordinary least squares analysis, using the Ricardian approach. The results obtained indicate that the climate change will have a significant impact on the value of the land and that these effects will be differentiated between the different strata of producers, particularly affecting the smaller scale ones. The heterogeneity in climate sensitivity highlights the importance of considering specific strategies for different types of producers in order to reduce their dependence on coffee cultivation and reduce their vulnerability to the increasingly evident impacts of climate change.
Estimación de biomasa y carbono aéreo en bosques templados del sur de México
Authors: Guzmán-Santiago Juan Carlos , De los Santos-Posadas Héctor Manuel , Vargas-Larreta Benedicto , Gómez-Cárdenas Martín , Marroquín-Morales Pablo
Published: June 2024

Forest inventories are tools that allow the collection and recording of information for the estimation of volume and biomass in order to determine carbon sequestration in forest biomass using regression techniques. The objective of the study was to generate allometric equation parameters that accurately estimate the biomass and total aboveground carbon content of 25 temperate species from UMAFOR 2012, San Juan Quiahije, Oaxaca. Circular sampling sites of 1000 m2 were established, where the normal diameter and total height of 16 863 trees of 25 species were taken; subsequently, biomass and aboveground carbon content were estimated through allometric equations, using SAS software. The simultaneous potential equation had the best goodness of fit, where the adjusted coefficient of determination (R2adj) was over 87% for total biomass, while the total carbon estimate had an R2adj of 99% for all species. Pinus maximinoi had the highest average biomass (35 971.85 and 2 922.03 kg) and carbon content (17 985.92 and 1 462.01 kg) in branches and stems, respectively.
Evaluación y actualización del conocimiento etnoflorístico medicinal de la zona oriente de Aguascalientes, México
Authors: Mendieta-Vázquez Araceli Guadalupe , Martínez-Calderón Víctor Manuel , Torres-González Jorge Alejandro , Álvarez-Reyes José , López-Santos Armando , Meraz-Jiménez Antonio de Jesús
Published: June 2024

Mexico has great traditional knowledge of the use of medicinal plants, threatened by globalization and the standardization of educational systems. In Aguascalientes, the semiarid areas of the east are little studied on the ethnobotanical topic. The objective was to evaluate and update ethnobotanical knowledge of eastern Aguascalientes. Interviews, field trips, and collections of the mentioned medicinal plants were carried out. The Knowledge Wealth Index (KWI) and analysis of variance (ANOVA) were calculated by the age and sex of the interviewees. 52 medicinal species were identified, with main uses in the treatment of digestive, respiratory, renal, and traumatic diseases. Low KWI was obtained with a mean of 0.13 (limited knowledge), and without significant differences in knowledge between men and women, and age. The importance of documenting and preserving traditional knowledge and the use of medicinal plants in eastern Aguascalientes is highlighted.
Funciones alométricas de altura total para pinos tropicales en Puebla, México
Authors: Puc-Kauil Ramiro , Nava-Nava Adan , Paredes-Díaz Esther , Ruiz-Aquino Faustino , Gerónimo-Torres José del Carmen , Ortiz Juan
Published: June 2024

Tropical pines are important because of the amount of wood they produce in short periods. However, it requires allometric functions to predict the total tree height, since it is one of the critical variables to estimate both, it is the total and commercial volume. Accordingly, we aimed to develop a local and a generalized allometric function for model the total height-diameter (h-d) relationship of Pinus caribaea var. hondurensis and hybrid Pinus caribaea var. hondurensis × Pinus tecunumanii in the Sierra Norte of Puebla, México. In order to analyze the relationships, 1 232 h-d pairs were used. The allometric models were fitted with three parameters totaling 80% of the data and validated with 20%. The best model had the lowest average bias, root mean square error, and Akaike’s Information Criterion, as well as of the highest adjusted coefficient of determination. The models explained over 58.55% of the variability in observed total tree height. Nonetheless, the Gompertz and Weibull models obtained the best performances in fit and validation, and estimated h of tropical pines with less uncertainty. In consequence, the fitted allometric functions are reliable for predicting tree h; therefore, it can contribute to the sustainable management of commercial tropical pine plantations in the study region.
Influence of temperature on the quality of sperm from synthetic strain rabbits
Authors: Boutebel-Boudour Khedidja , Lankri El Hassen , Meziane-Ahmed Malika , Zerrouki-Daoudi Nacira
Published: June 2024

The harmful effects of hyperthermia on testes and secondary sexual characteristics are not well understood. Our aim was to study the effect of temperature on the quality of rabbit semen. The experiment was carried out on 40 male rabbits of the ITELV 2006 synthetic strain. The rabbits were divided into two experimental batches that were exposed to two different temperatures, from 18 to 20°C for the first batch, and from 33 to 35°C for the second. During the experimental period, which lasted from the end of May to the beginning of July 2022, two successive ejaculates, spaced 10 minutes apart, were collected from each male and evaluated once a week. Weekly libido measurements also were taken. The rabbits responded well to solicitation, providing a 100% useful harvest rate. Seed analysis showed a significant difference between the two batches for all parameters studied (p < 0.05). The first batch produced a higher volume of sperm, with an average of 0.480 ± 0.106 ml, and a higher concentration of spermatozoa (spz), with an average of 462.797 ± 55.376 × 106 spz/ml. In comparison, the second batch had an average volume of 0.448 ± 0.115 ml and an average concentration of 409.745 ± 69.003 × 106 spz/ml. In terms of mass motility and individual motility, the averages recorded were respectively 5.058 ± 0.631 and 3.979 ± 0.957 for the first batch, and 3.246 ± 0.527 and 2.746 ± 0.769 for the second batch. The study shows that rearing temperature has a major effect on sperm quality.
The Effect of Money Supply on Exchange Rate in ASEAN-5: Empirical Test of Dornbusch Overshooting Model
Authors: Maghfiroh Ulil , Jayadi Akhmad
Published: June 2024

The primary purpose of this study is to analyze the effects of the money supply on exchange rates in ASEAN-5 and whether there is an exchange rate overshooting phenomenon with the application of the Dornbusch Overshooting Model. This study uses the Autoregressive Distributed-Lag (ARDL) method to analyze the short and long-term effects and uses time series data from 1980 to 2021 in ASEAN-5. The results of this study are still ambiguous in finding the overshooting phenomenon in ASEAN-5. In the short term, the research results support overshooting in two countries, Malaysia and Thailand. However, in the long term, no positive and significant influence was found between the money supply gap and exchange rate misalignment in ASEAN-5. Besides that, the inflation gap, interest rate gap, and output gap also greatly influence changes in exchange rate misalignment and have different significant effects in the short and long term.
Electrical Demand Analysis on Households and Industry in Indonesia
Authors: Kartika Margareth , Hidayati Nur Aini
Published: June 2024

This research aims to determine the response of the household sector and industrial sector to electricity demand when there are changes in prices and income. The influence of price and income on electricity demand from both sectors can be seen through their elasticity. The approach used in this study is panel data from 33 provinces in Indonesia for the 2010-2020 time period. Panel data regression estimation techniques are used in this study to estimate the elasticity value. The results show that price elasticity in the household and industrial sectors is negative inelastic, but price does not significantly influence household electricity demand. Unlike price, income elasticity has a much higher value and positively and significantly influences electricity demand in both sectors. The number of customers, which reflects the increasing electrification ratio and population growth, significantly impacts electricity demand in the household and industrial sectors. Based on the results, it was found that the number of customers most influences electricity demand in the household sector. At the same time, income has the most significant influence on electricity demand in the industrial sector.
The Effect of Balikpapan-Samarinda Toll Road Construction with a PPP Scheme on The Formation of Economic Structure in East Kalimantan
Authors: Tarassyta Aisyah , Auwalin Ilmiawan
Published: June 2024

Economic effects are just one of the many effects of the massive infrastructure investment in Indonesia made over the past ten years. The aim of connecting Indonesia between regions is the basis for massive infrastructure growth, especially toll road infrastructure. Several funding schemes have been implemented to build toll road infrastructure, including the Public-Private Partnership (PPP) financing scheme. This PPP financing scheme was also implemented in the Balikpapan-Samarinda toll road construction. Therefore, this research attempts to capture the impact of the construction of the Balikpapan-Samarinda toll road with a PPP scheme on the formation of the economic structure in East Kalimantan province using the Input-Output (I-O) table. The investment value for the Balikpapan-Samarinda toll road is IDR 9.97 trillion was injected (shock) into gross fixed capital formation in the construction sector. The calculation results in this research show that the construction of the Balikpapan-Samarinda toll road contributed 9.8% of total demand. Apart from that, there is a significant impact on the economic structure of East Kalimantan Province, as seen from the expenditure multiplier figure with an output total of IDR 15,111 billion, a total income of IDR 2,471 billion, and a total workforce of 25,095 workers due to investment in the construction of the Balikpapan-Samarinda toll road.
Perspective article: determinants and assessment of cardiovascular risk in steatotic liver disease owing to metabolic dysfunction-addressing the challenge
Authors: Jamalinia Mohamad , Lonardo Amedeo
Published: June 2024

Metabolic dysfunction-associated steatotic liver disease (MASLD) stands as an independent risk factor for cardiovascular disease (CVD), which is the leading cause of mortality among MASLD patients. The diverse spectrum of cardio-nephro-metabolic and vascular manifestations inherent in MASLD highlights the complex profile of CVD risk associated with this condition. However, current approaches to assessing CVD risk in MASLD lack specificity, predominantly relying on traditional markers. Although it is widely accepted that patients with advanced fibrosis are more prone to CVD risk, recent evidence suggests that this isolated focus may overlook the remarkable phenotypic variability of this CVD risk across the entire MASLD population. Emerging data indicate a progressive escalation of CVD risk in parallel with the severity of MASLD, highlighting the need for precise disease staging to inform accurate risk assessment. To address this challenge, we propose a novel sequential approach to CVD risk assessment in MASLD. While traditional CVD risk factors remain essential, incorporating liver-specific parameters enhances risk stratification and guides targeted interventions to mitigate the substantial burden of cardiovascular disease in this vulnerable population. This approach involves initial screening using FIB-4 and NAFLD fibrosis score, followed by assessment of liver fibrosis with imaging-based non-invasive techniques in individuals at intermediate-high risk for advanced fibrosis and liver fat quantification in low-risk individuals. Future prospective investigations should focus on the simultaneous use of liver biomarkers and imaging modalities to evaluate, in a sex-specific manner, the efficacy of the proposed approach and to determine optimal thresholds of liver fibrosis and steatosis for optimal CVD risk assessment.
Reseña: Bourdieu in the City: Challenging Urban Theory
Authors: Meritano Silvina
Published: June 2024

Bourdieu in the city, una obra provocadora que propone una interpretación de Pierre Bourdieu como teórico urbano, abordando la aparente ausencia de una teoría explícita sobre la ciudad en sus trabajos. Está estructurado en una introducción, tres capítulos principales y un epílogo que desafia las perspectivas consagradas en los estudios urbanos y profundiza en algunos de los principales conceptos desarrollados por Löic Wacquant a lo largo de su prolífica carrera. El aporte fundamental de este libro es la introducción de la trialéctica bourdieusiana conformada por: espacio simbólico, espacio social y espacio físico, para el estudio de la ciudad.
Book Review - Australian Falcons: The secret lives of our fastest birds of prey
Authors:   University of New England Armidale, NSW, Debus Stephen
Published: June 2024

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Grain-size control on organo-clay complexation and REE fractionation in the Paleozoic strata of the Permian Basin (West Texas, U.S.A.)
Authors: Green Hunter , Šegvić Branimir , Badurina Luka , Omodeo-Salé Silvia , LE Bayon Ronan
Published: June 2024

As a major component of mudstone, clay minerals are known to conserve organic matter (OM) as well as a range of trace elements through the mechanisms of adsorption, encapsulation, and/or intercalation. The associations of the clay minerals on one hand and trace elements and OM on the other hand impact the diagenetic evolution of such rocks and is of substantial importance for their characterization and assessment. Subsurface core samples collected from late Paleozoic mudstone in the Permian Basin of Texas were separated into four grain-size fractions (> 2 µm, 2 to 1 µm, 1 to 0.6 µm, and < 0.6 µm) to determine the clay mineralogy, OM abundances, and rock geochemistry using a suite of diffraction, spectroscopic, and chemical analyses. All separates largely consisted of illite–smectite (I-S), illite–tobelite–smectite (I-T-S), mica/illite and chlorite coupled with some minor quartz and feldspar. The smectite component of I-S was shown to increase with decreasing grain-size fractions. Additionally, the rise in the content of smectite interlayers correlated with an increase in the total-organic-carbon (TOC) content towards the finest grain-size separates in all samples. This suggested that a significant portion of the TOC content resided in the fraction below 2 µm and that smectite interlayers promoted the preservation of OM. Concentrations of rare earth elements (REE) were found to be the highest in the finest grain-size separates and align with an increased content of smectite interlayers, denoting a plausible interaction between the two. Further on, REE and TOC concentrations display a significant positive correlation in all size fractions and increase with respect to smectite-interlayer content. This three-component relation suggests the REE adsorption to illite–smectite was likely promoted by OM. Understanding the close relation between the clay minerals, OM, and trace-element content is indicative of polyvalent cationic bridging, ligand exchange, and organo-metallic complexation, which eventually leads to the enrichment of OM and fractionation of REE in mudstone.
Integrated InSAR-GPS Monitoring of an Underground Gas Storage (UGS) Field: The Minerbio Pilot Test
Authors: Codegone G. , Piras M. , Dabove P. , Mantegazzi A. , Coti C.
Published: June 2024

In 2014 the Italian Oil & Gas Safety Authority published technical guidelines (Italian Guidelines for monitoring the seismicity, ground deformation and pore pressure) to regulate the monitoring of all existing and future underground activities on the Italian territory. The guidelines suggested that ground deformation monitoring of underground activities was carried out by integrating InSAR and continuous GPS techniques to detect possible surface deformation phenomena linked to the monitored activities during the considered time interval, and to provide information of their space-time variations with respect to the background conditions. The guidelines application on underground gas storage (UGS) was tested on the Minerbio gas field under the supervision of the National Institute of Geophysics and Volcanology (INGV). At the time of the pilot test, Minerbio had a high-quality record of about 15 years of InSAR data and 10 years of CGPS data (from the MINE station). The presented case study shows how the Minerbio ground deformation monitoring system was implemented during the testing phase. The time series of MINE, sited in 2008 in a peripheral area of the field, show that it measures seasonal oscillations in the North-planar component and a certain seasonality in the East-planar component: considering such results, the InSAR data were used to identify a proper site for a second CGPS station with the aim to integrate the results of MINE. The new station MIN2 was placed in 2019 in the center of the field, near the vertical and East-planar InSAR amplitude peaks. The correlation analysis between the CGPS signals and the cumulative curve of UGS volumes of the Minerbio field indicates a strong correlation in the North-planar component for the MINE station and a strong correlation in the East-planar and vertical components for the MIN2 station. According with ILG target, such results indicate that: (i) MIN2 effectively integrates the MINE results by detecting the peak of UGS-related, vertical and East-planar oscillations, (ii) the current geometric configuration of the two-station CGPS system effectively integrates the InSAR information by giving information on the spatial distribution of the North-planar component of ground deformation, and (iii) the integrated InSAR-CGPS monitoring system provides a complete picture of the distribution of UGS-related ground deformations on the Minerbio field.
Assessing the Alkali Polymer Flood Potential in Matzen Field Through Estimation of Remaining Oil Saturation with Partitioning Inter-Well Tracer Tests
Authors: Mikulic Silvan , Jevanord Kjersti , Hincapie Rafael E. , Hoffmann Eugen , Janczak Alyssia , Schnöller Johannes , Clemens Torsten , Apodaca Erick Cantu , Nikjoo Ehsan , Huseby Olaf , Hartvig Sven , Dirdal Eirik
Published: June 2024

Alkali-Polymer (AP) flooding is currently piloted as an Enhanced Oil Recovery (EOR) method in Matzen field. Assessing the remaining oil saturation (Sor) both before and after AP is essential for determining the potential gain and effectiveness of this EOR method. We present the application of Partitioning Inter-Well Tracer Test (PITT) in Matzen field to estimate the remaining oil saturation. Additionally, the validation of the PITT results through a series of core flood experiments is discussed.

The PITT deployment involves simultaneous injection of one ideal water-tracer together with a partitioning-tracer. While the ideal water-tracer only follows the water phase, the partitioning-tracer partitions into both oil and water phases at a predetermined ratio (K-value). Analyzing the time delay between the tracers enables the estimation of Sor between wells. Two PITTs were carried out in 8.TH and 16.TH reservoir of the Matzen field before AP pilot. A series of core flood experiments (with PITTs) were also conducted before and after AP to compare the estimated Sor from the PITT with the measured Sor from the core flood.

For all the projects, the K-value of the selected partitioning tracer was measured under reservoir condition by using representative oil and water fluids. A proper sampling regime were designed based on the estimated tracer arrivals and the collected samples were analyzed to measure the concentration of both ideal and partitioning tracers for Sor interpretation. The results of the core flood experiments show a good agreement between the measured Sor from the core and the estimated Sor from the PITT for both pre- and post-AP stages. The consistent result further validates the application of PITT method in Matzen. Additionally, the field PITT results provided an estimation of the remaining oil saturation between the well pairs, helping to assess the potential gain from AP and economic feasibility of the method. Furthermore, a comparison between the results of the ideal water tracer with the previous inter-well water tracer tests during the water and polymer floods improved the reservoir understand about the changes in flow paths and swept volume during each displacement method.

The study enhances the validation and application of the PITT method, particularly for estimating remaining oil saturation between injectors and producers in mature fields. The results are crucial for EOR methods, particularly in addressing AP flooding. The Matzen field showed higher residual oil saturation, reducing economic risk, and improving EOR opportunities.
A Deep-Learning-Based Reservoir Surrogate for Performance Forecast and Nonlinearly Constrained Life-Cycle Production Optimization Under Geological Uncertainty
Authors: Nguyen Quang Minh , Onur Mustafa
Published: June 2024

This study presents an efficient gradient-based production optimization method that uses a deep-learning-based proxy model for the prediction of state variables (such as pressures and saturations) and well outputs (such as bottomhole pressures and injection rates) to solve nonlinearly constrained optimization with geological uncertainty. The surrogate model is the Embed-to-control Observe (E2CO) deep-learning proxy model, consisting of four blocks of neural networks: encoder, transition, transition output, and decoder. The use of a transition output block in E2CO networks provides the capability of predicting reservoir system output directly from the input state variables without using any explicit well-model equations. The proxy model is coupled with a powerful stochastic-gradient-based line-search sequential quadratic programming (LS-SQP) workflow to handle robust production optimization in the presence of nonlinear state constraints. A portion of the SPE10 benchmark reservoir model with channelized heterogeneous permeability under waterflooding is used for demonstrating the prediction and optimization performances of the proposed E2CO-based framework. The results from this framework are directly and quantitatively compared with the ones simulated using a commercial high-fidelity reservoir simulator.
Leading the Energy Transition: A Novel Approach to Existing Gas Pipelines Retrofitting for Hydrogen Transport
Authors: Terenzi A. , Iacozza C. , Rossi C. , Scarsciafratte D. , Arcangeletti G. , Aloigi E.
Published: June 2024

Considering future developments and plans of decarbonization, the H2 pipeline transport technology will play a key role, and it could also be implemented as a component of an integrated system with CO2 pipelines (i.e. blue hydrogen). A key aspect of H2 technology development is the possibility to use existing natural gas transport infrastructure to be retrofitted for H2 transport.

It is recognized that the transport of natural gas mixtures containing a 10% of hydrogen content could be in general feasible in existing onshore natural gas pipeline systems with minor modifications. Higher hydrogen contents, however, appear to have a large impact on the system components, requiring significant modifications instead. The more important bottleneck is related to the utilization of carbon steel grades normally used for natural gas transmission pipelines. Most of literature sources report a higher susceptibility of high steel grades to hydrogen embrittlement, i.e. the loss of toughness in steel which results from adsorption of hydrogen. Corresponding to the loss of net material toughness is a reduction in fatigue life, causing crack growth and propagation.

There is a need to complement existing standards on hydrogen piping, pipeline and their components part of the hydrogen value chain to fulfill the energy transition design scenarios and the need to reuse existing gas transport infrastructure to support the economics of the transition. This translates to the definition of a clear methodology to carry out the assessment of existing natural gas pipeline systems (both onshore and offshore), in such a way to identify the tolerance to hydrogen of the different system components. All the engineering disciplines need to be involved, including piping & materials, machinery, instrumentation, as well as loss prevention & safety.

Since the potential transport service conversion is normally carried out in steps, starting from a low H2 content in the blend with natural gas up to possibly 100% H2, the number of affected components will increase during this evolution; some of them could be ready to tolerate 100% H2 from the beginning, others will need some modifications, while some will need a complete replacement.

This paper presents a description of Saipem methodology, that has been applied to a number of conversion studies relevant to transport systems mainly located in Europe.
3D Field Structural Model Update by Incorporating Geosteering 2D Structural Interpretations in UGS Reservoir Application. Northern Italy
Authors: Sudiro P. , Mantegazzi A. , Pozzovivo V. , Codegone G.
Published: June 2024

Geosteering consists in the integration of different formation evaluation and drilling technologies, together with 3D and 2D reservoir modelling, to optimize the placement of highly deviated wells within a selected interval of the reservoir. During geosteering, the 2D structural model is constantly updated to fit the geological model to the observed data, in order to plan the required trajectory adjustments and keep the wellbore within the target interval. The introduction of deep reading measurements and inversion modelling allows consistently mapping and tracing one or multiple formation boundaries along the wellbore, without ever crossing these boundaries. Incorporating reservoir and near-reservoir data acquired during geosteering operations allows improving the 3D field models for future planning of new wells. The presented case study shows how, integrating high-resolution 2D structural mapping delineated during the geosteering of two wells drilled in a UGS field, can improve the quality of the field 3D structural model. The scalability of the process means that both the information from new wells drilled and from reprocessed legacy data can be incorporated, enhancing the structural understanding of the sub-surface. In the current application, two wells were imported and processed together, but there is no limitation to the number or sequence of well data imported and reprocessed: as new wells are drilled, these can be added to the 3D structural model for further processing and refinement. Alternatively, if suitable data were available form older wells that were not used to adjust the 3D structural model, they could be reanalyzed and reintegrated to update the structural model.
Decarbonization Challenges in Oil Refining: A Perspective on Blue Hydrogen Production at Panchevo Oil Refinery
Authors: Nešic S. , Fominykh S. , Vertlyugina A. , Sizykh A. , Božovic U.
Published: June 2024

The paper aims to outline the technical challenges and opportunities associated with implementing blue hydrogen production in the Panchevo oil refinery. It will emphasize a viable pathway for decarbonization, focusing on optimizing carbon capture and storage technologies, ensuring cost-effectiveness, and addressing environmental concerns. The scope includes contributing to the refinery's sustainability goals and fostering innovation in the energy transition. The approach involves utilizing Aspen Hysys for CO2 emission calculations, assessing all refinery emitters, and defining the carbon footprint. The required CO2 reduction for European blue hydrogen standards has been determined. Physical space needs for a carbon capture unit are analyzed, with parcel allocation. Three hydrogen production scenarios are evaluated using facility data and specialized software. This comprehensive methodology ensures a thorough examination of technical challenges and opportunities in implementing blue hydrogen production at the Panchevo oil refinery, emphasizing sustainability and adherence to European standards. The study employed Aspen Hysys with a Gibbs reactor to model fuel combustion, optimizing Gibbs free energy for phase and chemical equilibrium. Adjusting air flow to measured oxygen values, it was found that HPU emissions contribute 41% to total refinery emissions. Steam Methane Reforming data revealed current hydrogen production and the plant's underutilization at 50-60% capacity, indicating room for expansion. Implementing carbon capture technology enables the monetization of premium blue hydrogen. Analysis of three scenarios, with additional daily hydrogen production of 20t/day, 35t/day, and 50t/day, consistently showed a 74% emission reduction to meet blue hydrogen standards, equating to 350,000–530,000 tCO2/year for capture and storage. The proposed solution involves transporting captured CO2 via a pipeline to a depleted gas field located 40 km from the refinery, aligning with sustainability goals.
Preliminary Estimation of Geological Sequestration Potential of CO2 in the Algarve Basin - Offshore Portugal
Authors: Pinto P. , Munteanu I. , Calugarean C. , Nistor V. , Matias H.
Published: June 2024

The geological storage of CO2 is gaining momentum as a viable option to reduce greenhouse gas emissions and reach the NetZero goals. This work aimed to produce an initial volumetric estimate of the potential for geological CO2 sequestration in the Algarve basin, in the offshore Portugal, to serve as the cornerstone for further appraisal of this basin. The study focused on two plays, Upper Miocene turbidite systems of Messinian and Tortonian ages, to produce an initial range of potential volumes and select prospects for further development studies.