bluuebunny/crossref_metadata_2025 huggingface dataset:
Ciudades mexicanas y condiciones de habitabilidad en tiempos de pandemia
Authors: Ziccardi Contigiani Alicia Ermelinda , Suárez Lastra Manuel , Azuela de la Cueva Antonio , Emanuelli Maria Silvia , Murillo López Sandra Carmen Gema , Ruiz Coronel Alí , Galindo Pérez Mateo Carlos , Sánchez Aguirre Driselda Patricia , Alvarado Sizzo Ilia , Contreras Saldaña Marina Erendida , Padilla Delgado Héctor Antonio , Fernández de la Reguera Ahedo Alethia , Pedrotti Carolina Inés , Pérez Medina Susana Hortensia , Rodríguez Velázquez Daniel , Gasca Zamora José , Delgado Ramos Gian Carlo
Published: June 2023

La crisis sanitaria generada por COVID-19, debido a su naturaleza, localización y consecuencias es principalmente una crisis humanitaria, global y urbana, porque ha transformado profunda y velozmente el modo de vida de las ciudades. Principalmente durante el periodo de confinamiento, la pandemia exigió redefinir el uso del espacio privado, condicionó al extremo el uso del espacio público, puso de manifiesto las limitaciones del sistema de salud y de la seguridad social y al mismo tiempo que generó un fuerte incremento de la pobreza, produjo una amplificación de las desigualdades socioeconómicas y territoriales. Por ello, las principales preguntas planteadas en este libro colectivo son: ¿esta crisis global será un detonador para revisar y transformar profundamente el conjunto de políticas económicas, sociales y urbanas desplegadas por los diferentes ámbitos de gobierno —federal, estatal y municipal— a fin de crear ciudades sostenibles y saludables? ¿O si simplemente se trató de realizar un conjunto de acciones de contención ante la emergencia? Y ¿una vez superada la crisis, las políticas continuarán abonando al modelo de ciudad dispersa y difusa en la que prevalecen intensos procesos de segregación urbana y fragmentación social?
La influencia de la estrategia competitiva, la rivalidad competitiva y la orientación al cliente con el desempeño organizacional de empresas hoteleras en México
Authors: Figueroa Velázquez Juan Gabriel , Cavazos Arroyo Judith , Cerón Islas Arlen
Published: June 2023

Esta investigación se realizó en hoteles establecidos en el estado de Hidalgo, México y tuvo como objetivo validar la influencia que ejercen la estrategia competitiva, la rivalidad competitiva y la orientación al cliente en el desempeño organizacional de estas empresas. Utilizando la técnica multivariante del modelado de ecuaciones estructurales basado en la covarianza, y de acuerdo con la información recabada en 235 hoteles, se confirmó una influencia positiva y significativa entre las tres variables mencionadas con el desempeño organizacional. De esta manera la presente investigación aporta evidencia empírica sobre esta relación, en el contexto de países en desarrollo, al tiempo que colabora en el campo de las investigaciones que miden el desempeño organizacional a través de medidas no financieras o subjetivas.
Modelo de impacto de tipo psicosocial de las organizaciones en la salud ocupacional de los trabajadores
Authors: Patlán Pérez Juana
Published: June 2023

Introducción. La importancia del estudio del impacto psicosocial de las organizaciones radica en los efectos y consecuencias que generan en la salud ocupacional de los trabajadores. Objetivo. El objetivo de este trabajo es proponer un modelo del impacto de tipo psicosocial de las organizaciones en la salud ocupacional de los trabajadores. Metodología. La construcción del modelo se efectuó en tres etapas: a) análisis conceptual de los factores y riesgos psicosociales, b) revisión a la literatura del impacto de estos factores y riesgos, y c) construcción y propuesta del modelo de impacto de tipo psicosocial de las organizaciones en la salud ocupacional de los trabajadores. Resultados. Los resultados permitieron sustentar el modelo, conformado por causas (factores psicosociales, factores de riesgo psicosocial y riesgos psicosociales) y efectos (respuestas psicofisiológicas y del comportamiento, efectos en la salud del trabajador y en las organizaciones), mediados por la percepción, la experiencia y las características individuales. Conclusión. Los factores y riesgos de tipo psicosocial tienen principalmente efectos negativos directos en la salud ocupacional de los trabajadores y en el desempeño de las organizaciones. Recomendaciones. Se recomienda continuar el estudio del impacto de tipo psicosocial de las organizaciones en los trabajadores.
Estimación del nivel de digitalización de los canales de venta de empresas de Bahía Blanca, Argentina frente a la pandemia
Authors: Alderete María Verónica , Alvarez Nicolás , Jones Carola
Published: June 2023

Este trabajo mide el nivel de digitalización de los canales de venta de empresas de Bahía Blanca del directorio DesdeCasa, creado por el Municipio y otros actores durante la pandemia. Basado en un análisis de componentes principales sobre la presencia de estas empresas en diferentes plataformas digitales como Facebook, Instagram, WhatsApp, sitio web propio y nivel de comercio electrónico, se construye un índice de digitalización. Las 1 284 empresas son reagrupadas en 18 rubros de actividad. Se observa que los rubros “Muebles y decoración”, “Informática-electrónica y otras”, y “Alimentación saludable (sin TACC)” son los de mayor digitalización; mientras que “Farmacia”, “Alimentos en general” y “Almacén-autoservicio” son los de menor digitalización. Respecto del comercio electrónico, sólo 14.5% de las empresas alcanzó un nivel avanzado (transaccional). Si bien, la mayoría de las empresas (73%) no dispone de un sitio web propio, se destaca que 80% está presente en las redes sociales.
Optimal dynamic regulation with asymmetric information in continuous time: The case of electric power
Authors: Zambrano Jurado Juan Carlos , Astaíza Gómez José Gabriel , Garcia-Racines Juan David
Published: June 2023

In this article, we analyze the mechanism design for the remuneration to the reduction of energy losses of a natural monopoly through a dynamic principal-agent model in continuous time. The objective of this research is to characterize the optimal regulation that induces reductions in electrical energy losses. In our methodology, we use a differential equation, its HJB representation, and an exponential utility function. The results suggest that the optimal contract is based on the agent's continuation value as a state variable. The article contributes to the analysis of control problems in conditions of incomplete information and incorporates information asymmetries and incentives in regulation. Among the future lines of research are the application of the model to specific energy markets and the empirical evaluation of the effectiveness of the proposed regulation.
Evaluación de la toxicidad aguda y subaguda del compuesto alfa inyectable (fosfato disódico de 5-cloro-2-(metiltio)-6-(1-naftiloxi)-1H-benzimidazol) en ratas
Authors: Zapata Arenas Abel , Gracia-Mora Isabel , Castillo Rafael , Ramírez-Lezama José , Rico-Morales Héctor , Bustamante-García Ruth , Ibarra Velarde Froylán
Published: June 2023

El objetivo del trabajo fue evaluar la toxicidad aguda y subaguda del compuesto alfa inyectable en ratas Hsd Han: WIST. En la toxicidad aguda, las ratas fueron inoculadas con las dosis de 2000, 1000, 500, 100 o 10mg/kg vía intramuscular. Los resultados del análisis histopatológico no mostraron cambios aparentes con las dosis utilizadas. Aunque 2 animales murieron con las dosis de 2000mg/kg, y en el grupo de 1000mg/kg, también murió un animal. En el estudio de toxicidad subaguda, las ratas inoculadas con las dosis repetidas de 8, 24 y 40mg/kg, no presentaron cambios significativos en el porcentaje de peso corporal tanto en hembras como en machos (P=0.5930). En las hembras, se observaron diferencias estadísticas en los parámetros bioquí- micos séricos de glucosa y colesterol en el grupo inoculado con 8 mg/kg en comparación con el control. Mientras que el hematocrito de los grupos de 8, 24 y 40 mg/kg y el recuento de plaquetas en el de 24 mg/kg, tuvo diferencias significativas ( P=0.0110) en comparación con el grupo control en las hembras. En los machos, las diferencias estadísticas ocurrieron en el recuento de eritrocitos y en el Volumen Corpuscular Medio (VCM) en los grupos tratados con 8 y 40 mg/kg. Sin embargo, estos valores son normales según la literatura. Los hallazgos histopatológicos no mostraron cambios aparentes, por lo que se concluye que el compuesto alfa inyectable tiene un amplio margen de seguridad.
Obesidad y plasticidad termogénica del tejido adiposo en perros
Authors: Quesada-López Tania , Villarroya Francesc
Published: June 2023

La obesidad en perros domésticos es una preocupación creciente de la medicina veterinaria en los países desarrollados. La obesidad está asociada con la expansión de la grasa blanca, el principal tejido que almacena energía metabólica en los mamíferos. Los tejidos adiposos de color marrón y beige, que expresan la proteína desacopladora-1, se relacionan de manera opuesta con la obesidad, debido a su actividad termogénica y las propiedades de gasto de energía asociadas. Los perros poseen grandes cantidades de tejido adiposo pardo poco después del nacimiento, pero la grasa parda evoluciona con el envejecimiento y los perros adultos poseen una cantidad mínima de grasa parda activa. Sin embargo, los perros adultos conservan una notable capacidad para activar el oscurecimiento de los depósitos de tejido adiposo en respuesta a la estimulación β-adrenérgica sostenida u otros inductores, como los inhibidores del receptor 1 de cannabinoides. Por lo tanto, los perros conservan la capacidad de plasticidad del tejido adiposo para adquirir propiedades termogénicas, lo que merece ser considerado al desarrollar estrategias de prevención y/o tratamiento de la obesidad canina.
The role of gut microbiota in the development of obesity in dogs
Authors: Camacho-Rea María del Carmen , Cardoso Carmona Diego Alfredo
Published: June 2023

The gut microbiota has become the subject of extensive research in the last decades. Intensive research has revealed its role in several functions related to energy metabolism as well as its importance in both health and illness. An imbalance in gut microbiota composition results in dysbiosis, which has been associated with metabolic disorders such as obesity. In the latter context, the gut microbiota appears to mediate the impact of diet on the host body weight. There are many studies in rodents that show profound changes in the composition and metabolic function of the gut microbiota in subjects with obesity, indicating its influence on the development of the problem. Usually, the microbiota of obese dogs has a modified Firmicutes:Bacteroidetes ratio, which returns to normal values after dietary intervention with diet-induced weight loss. The role of the gut microbiota on the development of dog obesity is a recent topic of research, which has been complex due to most of the studies being carried out using commercial extruded diets, which differ in their nutritional composition, resulting in controversial findings. Nevertheless, it has been shown that macro-nutrients from the diet are the most relevant factors that can modulate the microbiota’s composition in a particular way. Moreover, current studies indicate that a personalized nutritional intervention could modify the composition and function of gut microbiota in a positive manner, reducing the development of pathologies such as obesity.
Dos especies nuevas de Hystrignathidae (Nematoda: Thelastomatoidea) asociadas a Heliscus tropicus y Rhodocanthopus cognatus (Coleoptera: Passalidae) de Tamaulipas, México
Authors: Garduño-Montes de Oca Uriel
Published: June 2023

Se presenta la descripción de Lepidonema zuritai n. sp. y Phalacronema vegae n. sp. (Nematoda, Hystrignathidae), del intestino de Heliscus tropicus Percheron, 1835 y Passalus cognatus Truqui, 1857 (Passalidae), recolectados en Tamaulipas, noreste de México. Las especies nuevas son descritas con base en las características morfológicas de la anatomía interna y externa típicamente utilizadas para la caracterización taxonómica de histrignátidos, como el número de ovarios, forma del esófago y sus partes, la presencia, forma y disposición de ornamentaciones cuticulares (espinas, alas, estriaciones), entre otras. Adicionalmente, se presentan las relaciones filogenéticas de las especies descritas, a partir de caracteres moleculares obtenidos de secuencias parciales de las subunidades menor y mayor del ribosoma, marcadores informativos típicamente usados en filogenética de nemátodos. Ambas especies se recuperaron dentro del clado que agrupa a la mayoría de los géneros de Hystrignathidae analizados y, aunque no son del todo claras las relaciones al interior del mismo, los resultados obtenidos sugieren un parentesco estrecho entre Lepidonema zuritai n. sp. y Xyo pseudohystrix, mientras que las relaciones entre Phalacronema vegae n. sp. al interior del clado aún no son claras.
Representaciones de las Hermanas de la Caridad y la enfermería laica en La Voz de México, 1870-1908
Authors: Merlo Solorio Jorge Luis
Published: June 2023

Tras la caída del Segundo Imperio, los conservadores radicales de aliento católico manifestaron sus aspiraciones e ideales a través del periódico La Voz de México, dejando huella de su imaginario dicotómico entre sus páginas. En el presente artículo se analizan las representaciones de las Hermanas de la Caridad y los practicantes de la enfermería laica, evidenciando los paradigmas de género que alimentaron las estimaciones o desprestigios sobre el quehacer enfermero, a caballo entre los siglos XIX y XX.
Design and Fabrication of Rocker-Bogie Mechanism
Authors: Kakde Pawan N. , Choudhary Dr. S. K.
Published: June 2023

Abstract: Rocker bogie are important for conducting in-situ scientific analysis of objectives that are separated by many meters to tens of kilometers. Current mobility designs are complex, using many wheels or legs. They are open to mechanical failure caused by the harsh environment on Mars. A four wheeled rover capable of traversing rough terrain using an efficient high degree of mobility suspension system. The primary mechanical feature of the rocker bogie design is its drive train simplicity, which is accomplished by using only two motors for mobility. Both motors are located inside the body where thermal variation is kept to a minimum, increasing reliability and efficiency. Four wheels are used because there are few obstacles on natural terrain that require both front wheels of the rover to climb simultaneously. A series of mobility experiments in the agriculture land, rough roads, inclined, stairs and obstacles surfaces concluded that rocker bogie can achieve some distance traverses on field.
Efficient Workforce Planning with a Labour Allocation System
Authors: Xavier Ashna
Published: June 2023

Abstract: The primary objective of this project is to develop a web-based application for the allocation of work to daily wage workers. Effective management of labour resources is crucial to the success of fieldwork. The assignment of labour to work constitutes one of the most vitally significant and successful processes in the management of labour resources. Consequently, estimating labour shortages and evaluating various labour resource allocation strategies can facilitate the allocation process. By utilising a system dynamics approach, a dynamic model is proposed for workforce allocation. The project is able to achieve this through the model that is presently provided in this study
Android Based Online Application for Students Information System
Authors: Rohith LS
Published: June 2023

Abstract: Now-a-days in our daily life students use WhatsApp, Facebook, Twitter, Instagram, etc., Students get theircollege feed via email or some other applications provided but people see that few of the students do not get the information passed to them due to some technical issues and in other cases the students cannot clarify their doubt in the teachings taught in the college and face difficulty and much more issues, few of them may also face issues as it is a public IP which is given to them, So in consideration to the above issues faced by the students our team is trying to develop an application which is specifically designed for the students or you can say to the particular college. Here the developed application will perform the following tasks as sharing files, receive college feed and we are able to interactwith the faculty in the form of messaging. To develop this application, the format used is programming language JAVAlanguage to write the code for our application and the software used is Android Studio software to build an application,in this we can build, test, and debug our application easily.
Speed and Crash Analysis: A Case Study of Bangalore-Mysore Expressway
Authors: B S Sanketh Gowda
Published: June 2023

Abstract: Aim: Speed is a significant risk factor for traffic safety. The study aimed to identify the most frequent predictors the explanatory variables and measurements used to study the contribution of the airspeed factorto the risk of injury in the event of a collision. Collision Risk Analysis takes into consideration the cause- effect relationships between three major factors: the human being, the vehicle, and the environment (whichinclude the circumstances of the accident and the highway). This study focuses primarily on the analysis ofaccident risk factors, with an emphasis on the contribution of speed to injury risk. The proposed route isthe NH 275 expressway from Bangalore to Mysore (toll from Bangalore to Nidaghatta– State of Karnataka) which is 50.5 km long. This study deals with the inventory of roads, the inventory ofsignaling, the inventory of traffic volumes, the study of point speed, the study of speed and delays, and other investigations. Accident data has been collected for the 2017- 2022 stretch period and analysis is beingconducted
Performance Analysis of Domestic Refrigerators Condenser Coil By Applying Lampblack / Synthetic Black Blend
Authors: Chawda Lucky
Published: June 2023

Abstract: Domestic refrigerators are usually used for cooling the bounded space by absorbing the heat through the evaporator and simultaneously rejecting the heat to the surrounding through the condenser coil. The black color coated condenser coil is the main part that rejects heat to the surrounding in the form of radiations. Herein, to increase rejection of the heat from the condenser coil, to increase its performance, a blend of lampblack/ synthetic black (various w/w ratio) was partially painted on. The three different compositions (w/w) are applied on the condenser coil and accordingly, the heat radiating coefficient and coefficient of performance are measured. Optimized composition of lampblack /synthetic black (4:6) provided maximum performance in terms of coefficient of performance 5.51% and with heat transfer coefficient 16.11%. The results show a costeffective approaches to increase the performance as well as the life time.
Comparative Analysis of Traditional and Contemporary Architecture in Context to Sustainable Characteristics and its Construction Techniques: A Case of Kumaon Region
Authors: Rao Ar. Nitika Ranjan , Saxena Ar. Saurabh
Published: June 2023

Abstract: This research focuses on the study of traditional architecture of Kumaon, and how it has changed over the period of time. Kumaon region in Uttarakhand shows great examples of traditional architecture which has proven to be the best earthresistant structures. The concept of science and earthquake-resistant structures were beyond the thought process of the people of that time. These traditional structures were cost effective, energy-efficient, provide thermal comfort for the longer period of day. The buildings of that time were locally constructed by the skilled person of the community using conventional materials like stone, mud, timber slates etc. With rapid urbanization, the need for rapid development has increased, transportation has improved, and the need for high rise structures has encouraged the use of modern materials such as concrete. However, society continues to demand better services, faster and easier construction to meet the needs of residents, resulting in serious damage to the fragile environment in and around settlements. To minimize the environmental impact of damage caused by modern technology, the use of indigenous practices needs to be revived. This research comprises of the comparison of traditional architectural style “Koti banal” which is rarely being used in many northern parts of Uttarakhand and current construction technique which is affecting the natural terrain of Kumaon resulting in natural calamities like landslide, soil erosion etc. The vernacular practices and patterns followed in conventional hill settlements have splendid capability to emerge as the premise for brand new improvement and system of suitable constructing policies for hill settlements.
Solar Operated Air Compressor
Authors: Gundage Mr. V. V. , Nale Vaibhav P. , Jathar Sagar A. , Adalinge Rushikesh N. , Pisal Aniket A. , Kharat Vaibhav H.
Published: June 2023

Abstract: Solar energy is a renewable energy source which can be used in many applications such as energy production, heating, cooking, etc. Air compressors, sometimes called gas compressors, are devices or tools which reduce the volume of a gas thereby creating pressure and heat in the compressor tank ,to operate these air compressors, a lot of electrical power is required based on the air outlet pressure. Non-renewable resources for electricity generation have become limited and are about to disappear, leading to high energy costs or an energy crisis. In such situations, renewable sources such as solar are very useful and the application of this technology for running the air compressor is called solar air compressor.
Reformist Revival of Falsafa’s Soteriology
Authors: Ibrahim Tawfik
Published: June 2023

The article highlights one of the most important aspects of the modernizing potential of Falsafa (hellenizing philosophy of classical Islam), associated with the significance of the soteriological concept developed within its framework for the soteriological concept that began in the 19th century reconstruction of theological discourse. On the example of the activity of Jamaladdin al-Afghani (d. 1897), Muhammad Abduh (d. 1905), Rashid Rida (d. 1935) and other reformers, it is shown how thinkers inspired by the ideals of scientific rationality and socio-cultural progress overcame the eschatologism of traditional theology, applying to the intellectualistically and presentistically oriented soteriological teachings of the Muslim peripatetics, primarily Ibn Sina (Avicenna; d. 1037) and Ibn Rushd (Averroes; d. 1198). In fact, denying the normativity of hadiths (reports of proper prophetic sayings) as a source of creed-aqida, modernists exclude from the traditional list of obligatory dogmas all principles based on hadiths, including traditions on the nearness of the end of the world and the signs that precede it. The article pays special attention to the reformist rehabilitation of Falsafa’s theses, previously qualified as heterodox: the immateriality of the soul, the unresuscitatability of the earthly body, the otherness of the otherworldly corporeality, the intellectual-imaginative nature of the afterlife, the universality of final salvation (apokatastasis).
Opportunities and Prospects of Intercultural Philosophizing: Book Review of Monograph “Comparative Philosophy: from Comparative to Intercultural Philosophy” (edited by M.T. Stepanyants)
Authors: Lepekhov Sergey Yu.
Published: June 2023

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Russian Neo-Kantianism Through Eyes of American Researcher. Book Review of Thomas Nemeth’s “Russian Neo-Kantianism: Emergence, Dissemination, Dissolution”
Authors: Sokolova Julia V.
Published: June 2023

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Inovasi Produk Selai Nanas Goreng dengan Pemanfaatan Teknologi sebagai Upaya Peningkatan Daya Saing Produk UMKM di Desa Tangkit Baru Kabupaten Muaro Jambi
Authors: Yacob Syahmardi , Lubis Tona Aurora , Ekasari Novita , Siregar Ade Perdana , Rosyid Garry Yuesa
Published: June 2023

Produk hasil olahan dari nanas yang di produksi, salah satunya adalah produk selai nanas goreng. Malakue merupakan mitra dalam kegiatan pengabdian kepada masyarakat, merupakan usaha yang memproduksi dan menjual selai nanas goreng. Permasalahan mitra yang diprioritaskan akan diselesaikan adalah pada masalah proses produksi, distribusi produk, kemasan produk dan manajemen keuangan, Tujuan kegiatan ini adalah mengembangkan produk unggulan daerah selai nanas goreng dengan meningkatkan daya saing berkelanjutan pada aspek produksi, manajemen dan teknologi tepat guna. Metode yang digunakan dalam pencapaian tujuan tersebut adalah metode sosial dan partisipatif dengan memberikan pelatihan dan pendampingan usaha kepada mitra. Hasil dari kegiatan pengabdian kepada masyarakat yaitu peningkatan kemampuan mitra terhadap aspek teknologi, aspek produksi dan aspek manajemen.
Pension Fund Investment: Implications for the Real Economy
Authors:   , Pinkus David
Published: June 2023

Given the increasing importance of funded pension systems around the world, it is crucial to understand the impacts of such systems on the real economy. This thesis examines the economic effects of pension funds from various perspectives. The three chapters of this thesis produce new empirical evidence on that issue by applying advanced micro-econometric methods to novel data on pension fund asset allocation. In summary, this thesis finds that domestic pension funds exhibit unique trading behaviours, including a longer investment horizon, compared to other institutional in-vestors, justifying their recognition as long-term investors in policy discussions on funded pension systems. Moreover, this thesis shows that pension fund investment positively affects the productivity of domestic firms. Lastly, this thesis finds a positive relation-ship between pension fund investment and increased patenting activities at the firm level. These results are important evidence that domestic pension funds support the domes-tic economy highlighting the wider economic benefits of funded pension systems. The findings of this thesis are relevant for policy makers, researchers and financial sector stakeholders interested in understanding the broader economic implications of funded pension systems.
Corporate Governance and Its Relationship with the Working Capital Management in Europe
Authors: Ahmed Amanj Mohamed , Ali Muhammad Nawzad , Hágen István
Published: June 2023

This study aims to investigate the impact of corporate governance on working capital management, which has been relatively overlooked despite its significance on corporate performance. Using the Ordinary Least Square regression model, a model was developed to assess the relationship between dependent and independent variables. Secondary data from the annual reports of 42 non-financial firms listed on the Frankfort and Oslo stock exchanges from 2017 to 2021 were collected. The dependent variable, working capital management, is indicated by cash holding, while the independent variable, corporate governance, is measured through five proxies: board meeting, board remuneration, the board size, CEO remuneration, and CEO tenure. Leverage and firm size are involved as control variables. The findings revealed that board meetings, board remuneration, CEO remuneration, and CEO tenure exhibit a positive and significant relationship with working capital management. However, board size demonstrated a negative but insignificant relationship. Additionally, the study showed that leverage has a negative relationship, while firm size has a positive relationship with working capital management. In conclusion, the study suggests that future research should focus on the financial sector to conduct comparative analyses with other sectors.
Associations between Early Hyperoxia and Long Term Neurologic Outcome in Acute Carbon Monoxide Poisoning
Authors: Kim Ju Chan , Chun Byeong Jo , Moon Jeong Mi , Cho Young Soo
Published: June 2023

Purpose: We studied the impact of arterial oxygen tension (PaO2) on the long term neurologic outcome in patients with acute carbon monoxide poisoning. Methods: The study population included 311 patients who presented to emergency department with acute CO poisoning from January 2015 to January 2018. These patients underwent arterial blood gas testing at the time of presentation. The baseline demographic, clinical, laboratory, and clinical outcome data were recorded. The primary outcome of interest was the long term neurologic status. Results: The normoxia group was significantly older and it had a higher incidence of diffusion weighted MRI abnormality, and this group needed multiple HBO sessions compared to the group with moderate or severe hyperoxia. Also, the incidence of altered mentality at discharge was higher in the normoxia group than that of the moderate hyperoxia group. The incidence of a poor long term neurologic outcome was 11.3%. The incidence of a poor long term neurologic outcome decreased as the PaO2 increased. The PaO2 was significantly lower in patients with a poor long term neurologic outcome than that of the patients with a good outcome 198 (165.2 to 231.1) mmHg in the good outcome group vs. 154 (119-162) mmHg in poor outcome, p<0.001). In multivariate logistic regression analysis, PaO2 was selected as an independent factor of the poor long-term neurologic outcome (OR 0.981 (95% CI: 0.968 to 0.995)) Conclusion: Higher PaO2 was independently associated with a lower incidence of a poor long-term neurologic outcome.
The Risk Factors of Acute Cardiovascular and Neurological Toxicity in Acute CO Poisoning Patients and Epidemiologic Features of Exposure Routes
Authors: Park Jinsoo , Shin Seunglyul , Seo Youngho , Jung Hyunmin
Published: June 2023

Purpose: This study evaluated aggressive hyperbaric oxygen therapy (HBOT) by understanding various exposure routes of acute carbon monoxide (CO) poisoning, the risk factors causing acute cardiovascular, and neurological toxicity caused by poisoning. Methods: A retrospective study was conducted based on the medical records of 417 acute CO poisoning patients who visited the emergency care unit from March 2017 to August 2019. The exposure routes, HBOT performance, age, sex, medical history (hypertension, diabetes mellitus, ischemic heart disease, heart failure), intentionality, loss of consciousness (LOC), intake with alcohol or sedatives, and initial test results (carboxyhemoglobin (COHb), troponin-I, electrocardiography, echocardiography, brain MRI) were examined. Comparative analysis of the clinical information was conducted between the groups that showed acute cardiovascular toxicity and neurological toxicity, and groups that did not. Results: Among 417 patients diagnosed with acute CO poisoning, 201 cases (48.2%) were intentional, and charcoal briquette was the most common route (169 patients (40.5%)). Two hundred sixteen cases (51.8%) were accidental, and fire was the most common route (135 patients (32.4%)). The exposure route was more diverse with accidental poisoning. Three hundred ninety-nine patients were studied for acute cardiovascular toxicity, and 62 patients (15.5%) were confirmed to be positive. The result was statistically significant in intentionality, LOC, combined sedatives, initial COHb, HTN, and IHD. One hundred two patients were studied for acute neurological toxicity, which was observed in 26 patients (25.5%). The result was statistically significant in age and LOC. Conclusion: Active HBOT should be performed to minimize damage to the major organs by identifying the various exposure routes of CO poisoning, risk factors for acute cardiovascular toxicity (intentionality, LOC, combined sedatives, initial COHb, HTN, IHD), and the risk factors for acute neurological toxicity (age, LOC).
Respiratory Failure following Tetramine poisoning after Ingestion of Sea Snail: A Case Report
Authors: Lee Joo Hwan , Park Jin Wook , Hong Seong Jun , Jeon Jae-Cheon , Jin Sang-Chan
Published: June 2023

Tetramine toxicity due to sea snail ingestion is generally mild and has a good prognosis. Tetramine toxicity acts on the acetylcholine receptor, affecting the neuromuscular junction and autonomic nervous system. A 78-year-old female patient visited the emergency room with vomiting and dyspnea after eating sea snails. At the time of admission, the vital signs recorded were 140/80 mmHg-105/min-24/min-36.5℃, and 90% oxygen saturation. Arterial blood test revealed hypercapnia (pCO2 58.2 mmHg) and respiratory acidosis (pH 7.213, HCO3- 22.5 mmol/L), whereas other blood tests showed no specific findings. Due to decreased consciousness and hypoxia, endotracheal intubation and mechanical ventilation were administered to the patient. Successful weaning was accomplished after 12 hrs, and the patient was discharged without any further complications. Although tetramine toxicity rarely results in acute respiratory failure due to paralysis of the respiratory muscle, caution is required whilst treating the patient.
A Case of Ischemic Stroke in Young Patient Associated with Marijuana Use
Authors: Ha Sue Young , Kang Dong-Wan , Lee Seung-Hoon
Published: June 2023

A 21-year-old female patient complaining of hemiparesis was diagnosed with right middle cerebral artery infarction. No risk factor was found, despite an extensive young-age stroke work-up, except her history of marijuana use. The patient had smoked marijuana for treating depression for more than five years. Magnetic resonance angiography showed multifocal intra- and extracranial stenoses, suggesting cannabinoid-induced vasculopathy. Since the use of illicit drugs has increased nationwide, physicians should consider it as a possible cause of a stroke due to an unknown etiology.
Acute Nicotine Poisoning due to Electronic Cigarette Liquid: Systematic Review of Case Reports
Authors: Yang Si Yong , Choa Min Hong , You Je Sung , Chung Hyun Soo , Chung Sung Phil
Published: June 2023

Purpose: Acute nicotine poisoning by liquid nicotine in electronic cigarettes is becoming an increasing problem worldwide. The current systematic review aimed to determine the harm of acute nicotine poisoning by reviewing published case reports. Methods: An online literature search with PubMed, Embase, Cochrane Library, and KoreaMed database was performed to identify relevant studies addressing acute nicotine poisoning with electronic cigarettes. Two investigators searched the case reports written in English or Korean. Results: Twenty-six cases were included in this study. The routes of intoxication included ingestion in 18 cases, intravenous injection in three cases, subcutaneous injection in two cases, and ocular exposure in two cases. Ten cases had a cardiac arrest, and seven of them died. Seven out of 12 cases with intentional poisoning had a cardiac arrest. Nine children under 18 years were reported, and three of them had a cardiac arrest. Sixteen cases without a cardiac arrest recovered well, except for one case with sudden sensorineural hearing loss. Conclusion: The authors reviewed the risks of electronic cigarette liquid in terms of acute poisoning through a systematic review. The nicotine solution of an e-cigarette can be life-threatening in cases of acute poisoning. Therefore, active emergency treatment with early recognition is necessary. In addition, various management methods and regulations for preventing acute nicotine poisoning, such as restriction of distribution and nicotine concentration, should be considered.
Analysis of Poisoning Patients Using 2017-18 ED Based Injury in-depth Surveillance Data
Authors: Koh Jiyoon , Jeon Woochan , Kang Hyunggoo , Kim Yang Weon , Kim Hyun , Oh Bum Jin , Lee Mi Jin , Chun Byeong Jo , Chung Sung Phil , Kim Kyung Hwan
Published: June 2023

Purpose: The annual statistics for poisoning are reported based on the data from poison control centers in many advanced countries. In 2016 a study was conducted to analyze the 2016 Korea Poisoning status. This study was conducted to make a better annual report for poisoning statistics in Korea from a 2017-2018 national representative database. Methods: This study was a retrospective analysis of poisoning patients based on the data from an emergency department (ED) based injury in-depth surveillance project by the Korea Centers for Disease Control and Prevention in 2017-2018. Bite or sting injuries were not included. Results: A total of 17714 patients presented to 23 EDs because of poisoning. Adults above 20 years old age accounted for 84.6% of the population, while the proportion of intentional poisoning was 60.8%. The poisoning substance presented in the ED were therapeutic drugs (51.2%), gas (20.3%), pesticides (16.4%), and artificial substances (11.4%). Overall, 35% of patients were admitted for further treatment. The mortality was 2.4% (422 cases), and the most common fatal substances in order were carbon monoxide, other herbicides, and paraquat. Conclusion: This study showed the 2017-2018 status of poisoning in Korea. The prognosis is different from the cause of poisoning and the initial mental state of the patient. Therefore, appropriate methods for preventing poisoning and therapeutic plans in specific situations are needed.
Association between defoliant exposure and survival to discharge after out-of-hospital cardiac arrest
Authors: Kim Dong Wook , Kye Yu Chan , Lee Jung Youp , Jung Eui Gi , Kim Dong Sung , Choi Hyun Jung , Lee Young
Published: June 2023

Purpose: We investigated the association between defoliant exposure and survival to discharge after out-of-hospital cardiac arrest. Methods: This is a retrospective case-control study based on the cardiopulmonary resuscitation (CPR) registry. The electronic medical records of out-of-hospital cardiac arrest victims from 6/9/2008 to 12/31/2016 were analyzed statistically. The case patients group had a history of defoliant exposure while the control group did not. Among the 401 victims studied, a total of 110 patients were male out-of-hospital cardiac arrest patients. Baseline characteristics and the parameters involved in cardiac arrest were analyzed and compared between the two groups after propensity score matching. The primary outcome was survival to discharge, and secondary outcomes were sustained return of spontaneous circulation (ROSC) and survival to admission. Results: After propensity score matching a total of 50 patients (case=25, control=25) were analyzed. Primary outcome (survival to discharge) was not significantly different between case and control groups [(OR, 1.759; 95% C.I., 0.491-6.309) and (OR, 1.842; 95% C.I., 0.515-6.593), respectively]. In the subgroup analysis, there were also no significant differences between the control group and subgroups in primary and secondary outcomes according to defoliant exposure severity. Conclusion: There is no statistically significant association between defoliant exposure and survival of out-of-hospital cardiac arrest.
Effect of ETCO2 monitoring of poisoning patients with decreased mental state in ED
Authors: Kwon Yong Hee , So Byung Hak , Jeong Won Jung
Published: June 2023

Purpose: This study aimed to analyse the effect of End-Tidal Carbon Dioxide (ETCO2) monitoring on patients who had been poisoned and presented in the emergency department with decreased consciousness. Methods: The data of patients over 18 years old presenting with poisoning from 2016 to 2020 was collected from the emergency department. We retrospectively analyzed their medical records, and defined patients with a Glasgow Coma Scale (GCS) score of 9 or less as having decreased consciousness. We divided the patients into two groups, one with ETCO2 monitoring and the other without, and the difference between the two groups was compared. Results: 168 patients participated in this study and 83 (49.4%) of them belonged to the ETCO2 monitoring group. In this group, the interval between arterial blood tests was statistically significantly longer and the rate of intubation was lower. In addition, in the monitoring group, the incidence of pneumonia and the rate of poor prognosis was not significantly higher. Conclusion: Although ETCO2 monitoring does not directly affect the prognosis of poisoned patients with decreased consciousness, it should be actively done as it can help to adequately treat patients while avoiding invasive techniques or unnecessary intubation.
Analysis of social factors influencing authenticity of suicide for patient who attempt to suicide in emergency department: Retrospective study based Post-suicidal Care Program data
Authors: Ji Jae-Gu , Kim Yang-Weon , Kang Ji-Hun , Jang Yun-Deok
Published: June 2023

Purpose: This study was conducted to analyze the social factors influencing the 'authenticity of suicidal ideation' based post-suicidal care programs in emergency departments (EDs). Methods: This retrospective study was an analysis using the data of patients who had attempted suicide and visited the ED in tertiary urban hospitals from January 1, 2016, to December 31, 2018. The variables examined included gender, age, history of previous psychiatric disease, suicide method, and the number of previous attempts. Univariate and multivariate logistic regression analyses were conducted to identify factors influencing the registration rate for the community-based post-suicide care program. Results: Overall,1,460 suicides were analyzed, 177 (1.16%) showed a high authenticity of suicide. The social factors influencing the authenticity of suicide intent were the unmarried status of men and women, joblessness, history of mental illnesses, more than two previous suicide attempts, the influence of alcohol, and an attempt to commit suicide after midnight more specifically between 24:00 to 6:00 hours in the morning (p<.05). The factors influencing the severity of the condition of high authenticity suicide patients were low Glasgow coma scores (12 points or less), lactate levels, and oxygen saturation observed in the patients who were admitted to the intensive care unit for treatment and died (p<.05). Conclusion: The need for evidence-based preventive measures and early assessment tools at the emergency medicine level is emphasized to reduce the rate of suicide attempts. If the results of this study are used in the management of suicide prevention, the evaluation of the authenticity of suicide intent will be more likely to be made at the emergency medicine level, allowing the severity to be assessed earlier.
A satisfaction survey of toxicological laboratory: Survey of regional and local emergency medical centers
Authors: Son Dong Woo , Kang Ji Hun , Kim Yang Weon , Park Chul Ho , Yoon Yoo Sang , Ji Jae Gu
Published: June 2023

Purpose: The purpose of this study is to find out the current status of toxicology laboratory operated by six locations nationwide and to investigate the satisfaction of emergency medical professionals who working at local and regional emergency medical centers. Methods: This survey was conducted prospective. It was conducted on 665 emergency medical professionals working at regional and regional emergency medical centers across the South Korea. Among them, the analysis was conducted with data that 510 emergency medical professionals who respond to this survey. The questionnaire was conducted on an online basis for a month. To ensure statistical significance, consider a dropout rate of 10% based on a minimum response recovery rate of 70%. 506 people were selected for the survey. Results: According to a survey on the status of addiction analysis room usage, the average monthly usage of addiction test rooms among respondents were 406 cases.71.0 cases (17.4%) of toxicology laboratory in Seoul and 71 cases (17.4%) in Gwangju. 32 cases (7.8%), 118 cases (29.0%) requested by toxicology laboratory in Busan, and the toxicology laboratory in Daegu. Eighty two cases (20.1%), Daejeon area 25 cases (6.1%), Wonju area toxicology laboratory was 78 (19.6%). According to a survey on the satisfaction of the addiction analysis room,Seoul (4.9±2.71) and Gwangju (4.8±2.52) showed high satisfaction. Conclusion: Due to the limited operation time of the four addiction analysis rooms currently in operation, the satisfaction level of addiction analysis by emergency medical professionals in the area is low due to the delay until the result is notified.
A case of severe organophosphate poisoning used a high-dose atropine
Authors: Lee Hyoung Ju , Moon Dae Sik , Jung Young Yun , Byun June Seob , Kim Chong Myung
Published: June 2023

In this study, we report the case of a 59-year-old male patient with organophosphate pesticide poisoning. He visited the local emergency medical center after ingesting 250 ml of organophosphate pesticide. The patient's symptoms improved after the initial intravenous infusion of pralidoxime 5 g and atropine 0.5 mg. However, 18 hours after admission, there was a worsening of the symptoms. A high dose of atropine was administered to improve muscarinic symptoms. A total dose of 5091.4 mg of atropine was used for 30 days, and fever and paralytic ileus appeared as side effects of atropine. Anticholinergic symptoms disappeared only after reducing the atropine dose, and the patient was discharged on the 35th day without any neurologic complications.
Ocular chemical burns following accidental instillation of tinea pedis treatment solution: A report of two cases
Authors: Kim Jung Ho , Chung Han Sol
Published: June 2023

Many commonly used household chemicals and medical eye drops look alike, resulting in a worldwide increase in incidences of accidents caused by confusion between similar-looking agents. In this case report, we present two patients who visited the emergency department following inadvertent instillation of tinea pedis treatment solution instead of eye drops. Both patients developed corneal chemical burns following the accidental application. Notably, the visual acuity and symptoms eventually recovered for both patients after hospitalization. However, complete recovery occurred only after several weeks. Both patients were relatively old and had been prescribed eye drops after previous ophthalmic surgery. Since the eye is a sensory organ that receives visual information, ocular injuries significantly affect the quality of life and social functioning of the patient. Incidences of accidental misidentification of eye drops are steadily increasing in South Korea; unfortunately, regulatory policies are unavailable to avoid such hazards. Therefore, physicians should be mindful of the potential risks associated with misidentification of everyday household products and must spend time educating patients when prescribing eye drops. Policy regulations are warranted for products with containers that resemble eye drop bottles. Such items need to be clearly labeled with additional warnings to prevent misidentification and accidental ocular instillation.