bluuebunny/crossref_metadata_2025 huggingface dataset:
Remote Sensing Study of Sliding Surface of Slopes nearby a Large Tobacco Growing Plantation
Authors: Huiwei Wang , Dehao Zhang , Zuozhou Li , Jie Yang , Fangfang Xue , Chengcheng Zheng , Gao Lv
Published: December 2021

Objectives: A study of remote sensing detection of slip surfaces on man-made slopes in a natural environment nearby a large tobacco growing plantation. Based on the GPR method, the image characteristics of potential slip surfaces on slopes are analyzed based on the change in GPR
wave amplitude caused by the water content of the slip surface. The large granularity and permeability of the spoil allows natural precipitation to continue to infiltrate into the bedrock, and the infiltrated water gradually erodes the spoil and forms a water-rich rubble layer with the easily
soluble rock mass, which develops into a slip zone and threatens the stability of the slope nearby a large tobacco growing plantation. By analyzing the magnitude of the remote sensing images, the process of water content changes in the soft fracture zone at the bedrock interface of the slope
can be efficiently and accurately understood. Ensured the safe operation of the planted tobacco plantation.
The Value of Electrocardiographic Changes in Evaluating the Prognosis of Acute ST-Elevation Myocardial Infarction (STEMI) After PCI
Authors: Yang Yang , Liang Xiuyu , Fan Yuzhe , Zhou Gendong , Zhang Xiaohong
Published: December 2021

To explore the relationship between the changes of ECG indexes and the prognosis after PCI in patients with acute ST-elevation myocardial infarction (STEMI), and to develop the evaluation method and analyze the advantages and characteristics. 420 patients with acute myocardial infarction
(AMI) were admitted to our hospital from March 2017 to April 2020. They were divided into the observation group (ST segment elevation type) with 220 patients and control group (non-ST segment elevation type) with 200 patients according to whether ST segment elevation was or not. ECG was detected
before and 1 hour after operation, evaluation of thrombolytic effect, 6-minute walking test and echocardiography were performed 3 months after operation. Compared with the control group, the ECG of the observation group showed St Compared with the control group, the thrombolytic effect of
the observation group was significantly improved, and the difference was statistically significant (P < 0.05); compared with the control group, the thrombolysis effect of the observation group was significantly improved, the difference was statistically significant (P < 0.05); ECG index
can effectively reflect the recovery of cardiac function after PCI in patients with acute STEMI, and can effectively indicate the improvement of symptoms in patients with AMI, which is worthy of clinical application.
Effect of Etanercept Combined with Synovectomy on Function and Serum Levels of Associated Factors in AS Patients with Coexisting Coxarthrosis
Authors: Pei Dong Hong , Liu Wei , Hou Ying Jun , Ma Wei Jing
Published: December 2021

Objective To investigate the clinical effect and value of etanercept combined with arthroscopic synovectomy in the treatment of ankylosing spondylitis (AS) complicated with coxarthrosis. Methods 66 patients with AS complicated with coxarthrosis admitted in our hospital were taken
as the study objects and were randomly divided into two groups with random number table: test group (n = 33) and control group (n = 33). The arthroscopic synovectomy was given to both groups. The control group was given basic anti-inflammatory and analgesic measures, promoting blood circulation
and detumescent measures after surgery, and the test group was added with etanercept on the basis of the control group. Changes in scores of coxae function, serum transforming growth factor-β1 (TGF-β1), tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), C-reactive
protein (CRP), and erythrocyte sedimentation rate (ESR) at different time after operation were compared between the two groups. Results There was no significant difference in Harris score between the test group and the control group before operation (P>0.05). The Harris score of the test
group was higher than that of the control group 3 months after operation and 6 months after operation (P<0.05). There was no statistically significant difference in the determination of flexion angle and abduction angle of coxae between the test group and the control group before operation
(P>0.05). The flexion angle and abduction angle of coxae of the test group were higher than that of the control group 6 months after operation (P<0.05). The difference of measured values of serum levels TGF-β1, TNF-α, IL-6, CRP and ESR in the test group and the control group
had no statistical significance (P>0.05). The determination values of serum levels TGF-β1, TNF-α, IL-6, CRP and ESR in the test group were lower than those in the control group at 3 months after operation (P<0.05). Conclusion Etanercept combined with arthroscopic synovectomy
for the treatment of AS complicated with coxarthrosis is beneficial to regulate the level of related cytokines and promote the recovery of postoperative joint function.
Application Effect Analysis of Nursing Intervention in Stem Cell Therapy for Stroke Patients
Authors: Zhao Jing , Fu Lili , Zhu Juan , Liu Yan , Sun Xiaoqian
Published: December 2021

To study and analyze the actual clinical effect of nursing intervention in stem cell therapy for stroke patients. A total of 9 stroke patients treated with stem cell therapy in our hospital from September 2018 to September 2019 were selected as the research and analysis objects.
All patients were divided into observation group 5 stroke patients and control group 4 stroke patients by random number method. Both groups of patients were treated with stem cell therapy. Patients in the control group were treated with conventional nursing methods, and patients in the observation
group were treated with nursing intervention methods. The treatment compliance, psychological status, quality of life and daily living ability before and after intervention were compared between the two groups. There were no significant differences in exercise training, disease monitoring
and compliance with regular life between the two groups before intervention (P > 0.05), and the patients in observation group were significantly better than those in control group after intervention (P < 0.05), with significant differences. There was no significant difference in anxiety
and depression scores between the two groups before intervention (P > 0.05), and after intervention, the patients in the observation group were significantly lower than those in the control group (P < 0.05), and the difference was statistically significant. There was no significant difference
in quality of life and ability of daily living between the two groups before intervention (P > 0.05), and the patients in the observation group were significantly better than those in the control group after intervention (P < 0.05), the difference was statistically significant. The application
of nursing intervention in stem cell therapy for stroke patients has a significant effect, which significantly improves the patient’s compliance with the treatment, alleviates the negative emotions of patients, improves the psychological status of patients, improves the quality of life
and daily living ability of patients, and is worthy of popularization and application.
Push/Pull Factors, Networks and Rural Labor Migration: Based on the Survey Data of Rural Labor Force in Tobacco Enterprises
Authors: Zheng Min , Tio Joy , Palaoag Thelma D.
Published: December 2021

Objectives: The “push-pull theory” analyzes the dynamic mechanism of the cross-border flow of labor force, and explains that the flow of labor force between countries is generated by the combined action of “push” and “pull”. Tobacco has always
been an important cash crop in China, providing a lot of financial support for the rapid development of China’s economy. Tobacco production is the premise of the development of tobacco industry. The shortage of tobacco planting labor force and the decline of quality restrict the tobacco
production and the development of the tobacco industry. Based on the “push-pull theory”, the researcher focuses on the survey data of the rural labor force of a specific Labor Cooperation Company. This paper clarified the current situation and transfer characteristics of rural
labor force in tobacco areas, discussed the impact of labor force transfer on flue-cured tobacco production, and put forward the strategies to solve the dilemma of rural labor force transfer in tobacco areas.Therefore, the suggestion of taking the city as the center and form a network of migrant
workers to enhance the sense of belonging of them is proposed.
Changes of Blood Leukocyte and Blood Glucose in Patients with Acute Craniocerebral Trauma and Nursing Effect
Authors: Yang Junyi
Published: December 2021

Acute craniocerebral injury is one of the most common injury types, and its mortality rate ranks first among all kinds of injuries. The changes of white blood cells and blood glucose play an important role in the treatment and nursing of patients. The purpose of this study is to
analyze the changes of white blood cells and blood glucose in patients with acute craniocerebral trauma and nursing effect. In this study, 65 patients with craniocerebral injury admitted to the Department of Neurosurgery of our hospital from January 2017 to September 2019 were selected as
the research objects. After admission, appropriate nutritional treatment was given according to the condition of patients. Blood samples were collected on fasting in the morning of 2, 8 and 15 days after admission, while those in the control group were collected by fasting vein for detection
of white blood cells, blood glucose, blood lipid, blood uric acid and other indicators. There was no significant difference in the number of neutrophils in each group (P < 0.05, P < 0.05, P < 0.05, P < 0.05, P < 0.05). After acute traumatic brain injury, the white blood cells
and blood glucose of patients increased, and the more severe the degree of brain injury, the higher the white blood cell count and blood glucose. This study will contribute to the analysis of white blood cell and blood glucose changes and nursing care of patients with craniocerebral injury.
Analysis of the Clinical Effect of Vacuum Sealing Drainage on Patients with Limb Trauma
Authors: Dou Meifang , Yan Fenghua , Li Kemei , Li Yanbin , Yi Li’an
Published: December 2021

To analyze the clinical effect of vacuum sealing drainage (VSD) on patients with limb trauma. Methods: 136 patients with limb trauma received by our hospital from October 2018 to October 2019 were selected as the study objects. According to the random number method, they were divided
into two groups, 68 cases in each group. The control group was treated with conventional dressing change. The study group was treated with VSD to observe the wound healing effect, wound area and complications before and after treatment for 7 days. Result: After 7 days of treatment, the area
of wound in the study group was significantly smaller than that in the control group, and the effect of wound treatment in the study group was significantly higher than that in the control group (P < 0.05); the incidence of complications in the study group was significantly lower than that
in the control group (P < 0.05). Conclusion: VSD can effectively repair the wounds of patients with limb trauma, significantly improve the clinical treatment effect, and effectively prevent the occurrence of treatment complications, which is worth promoting.
The Application of Vaginal Color Ultrasound in the Diagnosis and Treatment of Ectopic Pregnancy
Authors: Liu Panpan , Li Yanbin , Yi Li’an , Yan Haiping
Published: December 2021

To explore the application of vaginal color ultrasound in the diagnosis and treatment of ectopic pregnancy. Methods: From August 2018 to May 2019, 90 patients with suspected ectopic pregnancy who were treated in our hospital were selected as the study objects. Abdominal color ultrasound
and vaginal ultrasound were performed respectively to compare the diagnosis results of the two methods. Result: The detection rate of transvaginal ultrasound was higher than that of abdominal ultrasound (P < 0.05); the accuracy rate of transvaginal ultrasound was significantly higher than
that of abdominal ultrasound (P < 0.05); the main parts of ectopic pregnancy were ampulla, isthmus and umbrella, and the main types were ruptured, unruptured and obsolete. Conclusion: The application of transvaginal ultrasound in the diagnosis of ectopic pregnancy has the advantages of
high accuracy and detection rate, fast examination speed, simple operation, etc. it is of great significance to retain the fertility of patients and is wworthy popularizing.
Analysis of the Influence of Psychological Nursing on the Psychological Status of Pregnant Women with Hepatitis B Virus
Authors: Wang Yujie , Zhao Huidong , Wang Yuchen , Jia Huiying , Li Xing
Published: December 2021

With the continuous progress of human civilization and the continuous development of social medicine and science, health and disease issues are getting more and more attention, and the quality of life of the diseased population is becoming more and more prominent, especially for
patients with serious diseases. The quality and the dignity of life need others to take care of. Hepatitis B, as a disease that cannot be cured by modern medicine, has an increasing incidence year by year, and it is inevitable to turn from the deterioration of the disease to death. In the
21st century, hepatitis B has become one of the main diseases threatening human health. If people learn that they have hepatitis B, it is tantamount to a bolt from the blue and even feel that their lives are meaningless. This is a normal reaction. For patients with hepatitis B, it is very
easy to have bad psychological conditions, which are mainly manifested in depression and anxiety. This article takes the pregnant women hepatitis B virus carriers in the hepatitis B patient group as the research object, and mainly studies the influence of psychological care on the psychological
status of pregnant women hepatitis B virus carriers. The research content focuses on anxiety, depression, body image, the quality of life and social support are five aspects, and the relevant scales are used to analyze the experimental data, and finally the corresponding conclusions are drawn.
THERMODYNAMIC PROPERTY OF ALLOY FCC-AuCuLi AT ZERO PRESSURE
Authors: Nguyen Quang Hoc , Nguyen Duc Hien
Published: December 2021

We briefly present the thermodynamic theory of FCC ternary substitutional and interstitial alloy at zero pressure derived by the statistical moment method and apply this theory to alloy AuCuLi. The thermodynamic properties of Au, AuCu and AuLi are specific cases for that of AuCuLi. We compare the thermodynamic properties of alloys AuCuSi and AuCuLi. Our calculated results of thermodynamic quantities for AuCuLi predict and orient experimental results in the future.
A comparative pharmacokinetics study of Ashwagandha (Withania somnifera) Root Extract sustained-release capsules: an open-label, randomized, two treatment, two-sequence, two period, single-dose crossover clinical study
Authors: Alluri Venkata Krishna Raju , Thanawala Shefali , Upadhyay Vivek
Published: December 2021

Background: In this open-label, randomized, balanced, two-treatment, two-sequence, two-period, crossover, single-dose oral comparative pharmacokinetics study, the pharmacokinetics, safety, and tolerability of test product ‘ashwagandha (Withania somnifera)’ root extract sustained release capsule 300 mg (Prolanza™), each containing 15 mg withanolides (administered dose: 2×15 mg) was compared with that of a reference product (organic KSM-66 ashwagandha extract [vegan] capsule, each containing 15 mg withanolides [administered dose: 2×15 mg]).Methods: Total 14 healthy men were randomized to receive either the test or the reference product as a single dose of 2 capsules in sequence, administered under fasting conditions. Plasma concentrations of total withanolides, withanolide A and 12-deoxywithastramonolide were measured using validated liquid chromatography–mass spectroscopy/mass spectroscopy.Results: The test product had higher relative absorption, better relative bioavailability, and longer elimination half-life indicating a sustained-release profile compared to reference. Specifically, the relative bioavailability of the test formulation was 12, 44, and 11 times higher for total withanolides, withanolide A and 12-deoxywithastramonolide, respectively. No adverse events were reported during the study.Conclusions: The sustained-release profile of the test product, compared to reference product, will provide more long-lasting therapeutic effects from a single daily dose (Retrospectively applied on Clinical Trials Registry - India [CTRI]. Application reference number: REF/2020/03/032408). The study reports the unique sustained release formulation of Withania somnifera (Ashwagandha) root extract. The pharmacokinetic study also reports for first time, the successful plasma estimation of withanolide A and 12-deoxywithastraamonolide, the major phytoactives of ashwagandha.
Epidemiology, evaluation and management of tinea pedis
Authors: Turkistani Ohoud Adel , Aljalfan Abdullah Ali , Albaqami Meshal Mohammed , Alajmi Mohammad Mubarak , Mohammed Bahayan Abdullaziz , Alqurashi Anwar Ajlan , Alhanaki Renad Mutlaq , Alkhalfan Fatema Fahad , Alsharif Azzam Meteb , Alkhabbaz Ali Hassan , Alsuwaidi Amal Abdulrahman
Published: December 2021

Tinea pedis, known as athletics foot, is defined as a dermatophyte infection leading to a condition called dermatophytosis. Usually, the mode of infection is fungal. Trichophyton rubrum is the most common organism which is responsible for the infection. This fungus is endemic in some geographical regions as in Asia and Africa. The mode of transmission and risk factors depends on several factors: the weather, type of clothes and shoes, body response to different organisms, present history, family history, and endemic geographical areas. Increased temperature and humidity were correlated in the literature to the increased incidence and prevalence of tinea pedis compared to those areas which have low temperature, wearing specific types of shoes or clothes might be associated with an increased rate of infection, especially if the shoes are adherent to the foot and occlusive, prolonged exposure to humidity and water was also shown to be among the causes for tinea pedis infections. The clinical presentation of tinea pods varies according to the site and severity of infection. Generally, antifungal drugs are effective in most cases. The application of antifungals may be in oral form or local form, or mixed form. Terbinafine was proven to be effective in mild cases to fully treat the infection within a period of one week, extending to four weeks in more aggressive cases. This was a brief look at the article. This article aimed to review tinea pedis from different prospections clinically.
Instrumentos de financiación innovadores en el sector de agua y saneamiento: diagnóstico
Authors: Larrea Christian J. , Garcia Merino Lucio Javier , Berto Maria Eduarda Gouvea , Sasaki Keisuke
Published: December 2021

El propósito de este documento es presentar un diagnóstico de los principales mecanismos innovadores de financiamiento - financiamiento mixto, bonos temáticos y fondos climáticos-, así como también desafíos enfrentados, un análisis de su aplicación en el sector de agua y saneamiento considerando America Latina y Caribe, y las diferencias para su implementación en proyectos rurales y urbanos.
Recommendations on Diversity Data in the Social Sector
Authors: Morrison Judith , Robles Marcos
Published: December 2021

Administrative records, surveys, and censuses are all important resources for understanding the extent and nature of existing inequities and biases. When individuals, households, and peoples (pueblos) are properly identified based on their ethnicity, race, disability status, sexual orientation, migration status, gender identity, or other characteristics, gaps in socioeconomic indicators across these groups can be quantified. This enables policymakers to focus efforts and resources towards the most disadvantaged and promote equity. The lack of disaggregated data representative of diverse groups limits our understanding of their living conditions and economic opportunities. It also poses a significant challenge. This guide supports individuals interested in collecting or analyzing data on indigenous peoples, African descendants, people with disabilities, and LGBTQ populations by providing conceptual and empirical tools for specialists.
Study of Solid Biomass Combustion Modeling Using Openfoam
Authors: García Sánchez Gabriel Fernando , Chacón Velasco Jorge Luis , Rueda Ordoñez Yesid Javier , Fuentes Díaz David Alfredo , Martínez Morales Jairo René
Published: December 2021

Biomass is an important renewable energy source that has great potential as a substitute for fossil fuels in the short and medium-term, which has led to the development of various methods for its energy conversion, of which combustion is the most widely used. This process has several environmental advantages compared to traditional energy sources, however, there is still a long way to go in terms of process efficiency and emission reduction. In this context, CFD computational models are a powerful tool that allows to study and improve the performance of combustion systems in a safe, fast and economical way, compared to experimental studies. OpenFoam is one of the most important CFD software currently available, however, there are few works that use it to simulate the combustion of solid biomass. In this work an application of the software in modeling of a biomass boiler fueled by grape marc is reported, this model allows predict important parameters like CO, H2O and velocity fields in a 2D domain.
enfoque de alta granularidad para el procesamiento de paquetes en red para aplicaciones tolerantes a la latencia con CUDA (Corvyd)
Authors: Pantoja Maria
Published: December 2021

En este artículo, estamos interesados en investigar el procesamiento por lotes basado en capas para la inspección de paquetes de red en paralelo. Estudios anteriores de inspección de paquetes basada en GPU [1], [2] y [3] lograron ganancias de rendimiento a través de algunas innovaciones, los más importantes se basaron en la latencia de acceso a la memoria ocultando [4] que no es monopolizado por los sistemas GPU. Los sistemas de procesamiento de paquetes en cualquier hardware también deben usar alguna forma de bypass del kernel para evitar la sobrecarga asociada con las pilas de red de propósito general [4] y [6]. Estos estudios producen un rendimiento dramáticamente mejor que sus predecesores. Por el contrario, el enfoque de este proyecto se limita estrictamente a un conjunto de mejoras algorítmicas. El procesamiento por lotes es común a cualquier implementación paralela de alto rendimiento. Este proyecto propone explorar un procesamiento más granular basado en capas que divide los paquetes a través de múltiples rondas de programación para maximizar la homogeneidad del lote y minimizar la divergencia de la GPU. Esto aumentará significativamente la sobrecarga para procesar un solo paquete, además de aumentar la latencia a medida que se requerirá más almacenamiento en búfer, pero este enfoque tiene el potencial de mejorar el rendimiento en cargas de trabajo de IP altamente erráticas, donde el trabajo previo ha favorecido fuertemente las cargas de trabajo uniformes como ejemplos de PoC minimizados para representar sistemas que probablemente tendrían un bajo rendimiento en el campo [4],[5], y [6].
Relación cuantitativa estructura actividad del factor de bioconcentración de los bifenilos policlorados en especies de peces utilizando métodos basados en aprendizaje de máquina
Authors: Mora José Ramón
Published: December 2021

Los bifenilos policlorados (PCBs) son contaminantes persistentes que afectan enormemente a los ecosistemas marinos. Utilizando técnicas de aprendizaje de máquina, se construyeron modelos de relación cuantitativa estructura-actividad (RCEA) para predecir el factor de bioconcentración (BCF) de los PCBs. Estos modelos se construyeron a partir de descriptores topográficos 2D y 3D calculados para la estructura molecular optimizada en el nivel de mecánica molecular. Después de analizar sus parámetros estadísticos, se determinó que dos modelos son bastante robustos para la predicción de logBCF. Los modelos seleccionados fueron: M_4_LR construido con dos descriptores moleculares y presenta valores de r2 = 0,9154, Q2LOO = 0,8944, y Q2ext = 0,9119, y M_13 construido con cuatro descriptores moleculares y presenta valores de r2 = 0,9375, Q2LOO = 0,9155, y Q2ext = 0,844. Los dos modelos pasaron la doble fase de validación y cumplieron con los criterios de la prueba de Tropsha. Esto implica que las predicciones para el logBCF fueron bastante precisas tal como se muestra en los resultados del presente estudio.
Estudio de pre-factibilidad técnica y económica de la implementación de una biorrefinería para la conversión de residuos de cáscara de naranja
Authors: Muñoz Briones Paola , Almeida-Streitwieser Daniela , Fonseca-Ashton Juan D , Alvarez-Barreto Jose F.
Published: December 2021

La cáscara de naranja es un residuo orgánico abundante en el Ecuador que puede ser aprovechado y transformado en productos de alto valor agregado. Por ello, el presente artículo analiza la pre-factibilidad técnico-económica de una biorrefinería a partir de cáscara de naranja para la obtención de aceite esencial, pectina y/o bioetanol. Primero, se compararon varios escenarios alrededor de la combinación de productos a ser obtenidos, y se estableció que el más conveniente sería la obtención de aceite esencial y pectina, con una producción anual de 8,7 y 44,4 toneladas, respectivamente. A continuación, se diseñó un proceso para esta biorrefinería que consiste en 3 secciones: el pretratamiento de la materia prima, la extracción del aceite, y la extracción de la pectina. Se realizaron los balances de materia y energía del proceso, y posteriormente, se seleccionaron y dimensionaron los equipos de acuerdo a metodologías específicas. El proceso consideró la recuperación y recirculación de etanol empleado en la sección de extracción de pectina para reducir los costos de producción. Finalmente, se realizó un análisis económico a partir de las estimaciones de costos teóricos y un análisis de costos de catálogo. Se encontró que el proyecto es rentable y que el tiempo de recuperación de la inversión estaría entre 5 y 6 años. Por lo tanto, la implementación de la biorrefinería generaría un impacto positivo a nivel económico, ambiental y social en el país.
Simulación de la propagación de incendios forestales utilizando barreras cortafuegos en el Volcán Ilaló, Quito – Ecuador
Authors: Proaño Avilés Juan Sebastián , Trujillo Hidalgo Esteban Nicolás , López Pazmiño Ral Alejandro
Published: December 2021

Los incendios forestales provocan pérdidas materiales cuantiosas para la gente que vive en el sector afectado e inseguridad para la población. En este proyecto se propuso simular la propagación del fuego en el incendio forestal ocurrido el día 14 de septiembre de 2015 en el Volcán Ilaló – Sector La Toglla, Quito – Ecuador, utilizando los programas QGIS y FARSITE, además de estudiar soluciones alternativas para contener la propagación del fuego. Utilizando información topográfica y meteorológica, se construyó en FARSITE una simulación de la propagación del fuego y las repercusiones que se vieron reflejadas en varias hectáreas de naturaleza quemadas y la producción de gases de combustión. Los resultados del estudio de FARSITE pudieron ser validados con la información oficial de los contaminantes expulsados a la atmósfera. Finalmente, los métodos de contención desarrollados mostraron una disminución del área afectada y toneladas de contaminantes expulsados al ambiente, en comparación con las condiciones reales en el Volcán Ilaló correspondientes al incendio estudiado. Esta herramienta puede guiar los esfuerzos de diseño de cortafuegos y reforestación en zonas erosionadas, como el Ilaló.
Caracterización de suspensiones de nanopartículas de oro en presencia del copolímero poli (N-isopropilacrilamida)-co-poli (3-acrilamidopropil trimetilamonio): Influencia de la fuerza iónica y la temperatura.
Authors: Herrera Robalino David
Published: December 2021

El recubrimiento de nanopartículas metálicas con un polímero es de interés para dotar de estabilidad a las suspensiones de dichas nanopartículas. Por otro lado, existen polímeros termosensibles que responden de acuerdo a las temperaturas a las que sean expuestos. Este estudio tuvo como objetivo evaluar y caracterizar el sistema conformado por nanopartículas de oro y una versión del copolímero termosensible PNIPAAM-PAMPTMA (+) 48/6. Para esto se utilizó técnicas de dispersión dinámica de la luz, potencial zeta y espectroscopía visible ultravioleta. El PNIPAAM-PAMPTMA (+) 48/6 fue sometido a ensayos a distintas temperaturas en las cuales se confirmó que la temperatura crítica inferior de disolución del copolímero es de aproximadamente 35 oC y que en presencia de un medio salino tiende a agregar independientemente de la temperatura. Por otra parte, el copolímero se mezcló con nanoparticulas de oro para estudiar su comportamiento a fuerzas iónicas entre 0 M y 0,75 M.

Se encontró que, al variar la fuerza iónica en el rango mencionado, el recubrimiento de las nanopartículas de oro por parte del polímero es efectivo puesto que no se observó agregación de las mismas. Esto fue corroborado por el espectro UV-visible en donde, los espectros del sistema (o nanocomposite) copolímero-nanopartícula a fuerzas iónicas de 0 M y 0,75 M son prácticamente iguales al espectro cuando las nanopartículas de oro no han agregado, es decir, el pico del plasmón aparece en todos los casos a la misma longitud de onda aproximada de 530 nm. Finalmente, se estudió la evolución del sistema copolímero-nanopartícula a distintas temperaturas y a fuerzas iónicas de 0 M y 0,75 M. Se detectó que tanto la influencia de la temperatura como de la fuerza iónica provocan que el sistema copolímero-nanopartícula aumente su tamaño. Sin embargo, las nanopartículas de oro en su interior permanecen sin agregarse.
Hacktech COVID-19: Caso de estudio de un hackathon virtual en Latinoamérica
Authors: Cabrera Ronny , Calderón Carlos , Carrión Andrea
Published: December 2021

Este caso de estudio presenta la iniciativa Hacktech COVID-19, un proyecto que tuvo como objetivo desarrollar un hackathon en línea que permita generar soluciones de base tecnológica que contribuyan a solucionar la crisis sanitaria, social y económica provocada por el COVID-19. Para el evento se realizó un llamado a emprendedores e innovadores de Latinoamérica y el mundo para que presenten soluciones en las temáticas planteadas. Mediante la asignación de mentores se brindó asesoría para que cada equipo mejore sus propuestas. Los autores utilizaron el Health Hackathon Handbook como modelo para organizar el evento, y se adaptó para generar una metodología completamente virtual. Entre los resultados más importantes de esta iniciativa, se logró la participación de 1.021 personas de 25 países, el evento contó con la participación de 239 mentores de 23 países. Al final del hackathon se presentaron 156 proyectos, de los cuales el 78% abordó soluciones para la salud, el 9% soluciones para proteger la comunidad y el 13% soluciones para proteger el empleo. Un jurado seleccionó 3 proyectos ganadores quienes recibieron una subvención económica para la elaboración del prototipo de su idea de negocio, además se seleccionaron 15 proyectos para que reciban asesoramiento en la obtención de fondos en diferentes fuentes de financiamiento.
Application of Geographic Information Systems and Sediment Routing Methods in Sediment Mapping in Krueng Jreu Sub-Watershed, Aceh Province, Indonesia
Authors: Devianti  , Fachruddin  , Purwati Eva , Thamren Dewi Sartika , Sitorus Agustami
Published: December 2021

Land management in the Krueng Jreu sub-watershed (Aceh Province, Indonesia) that did not follow soil and water conservation methods encouraged erosion. This can lead to silting of rivers or irrigation canals due to sediment deposition. Limited tools were the main reason for the infrequent measurement and mapping of these sediments in watersheds. Therefore, this study aims to conduct sedimentary mapping using GIS techniques combined with the sediment routing method to successfully produce a map of sediment assessment criteria for the Krueng Jreu sub-watershed area from 2010 to 2019. Rainfall and spatial data from the Krueng Jreu sub-watershed were analyzed to obtain several parameters of surface runoff, peak discharge, erodibility, slope, the value of ground cover, and land management. The results show that the Krueng Jreu sub-watershed was included in the wet climate type. The type of land use classification of savanna accounted for the most significant runoff, and land use type of open soil gave the smallest runoff. The maximum erosion found in the secondary dryland forest type land classification. It was known that the type of secondary dryland forest land use was the most significant contributor to sediment occurrence in the Krueng Jreu sub-watershed area.
Implementation Challenges of Land Redistribution Programme in South Africa
Authors: Tyekela Nwabisa , Amoah Christopher
Published: December 2021

Upon assuming political office, the ANC government instituted a land redistribution programme to address the land ownership injustice perpetrated during the apartheid regime whereby the non-white citizens owned only 7% of land in South Africa. However, the programme has not achieved the set target; thus, this study sought to understand the challenges curtailing the successful implementation of the programme. The study used a qualitative research approach. An in-depth interview was conducted with three purposefully selected senior officials from three Departments in Greater Kokstad Municipality involved in the land redistribution programme’s implementation. The findings indicate that the major issues curtailing the programme's implementation are land claim disputes and mediation process, reliance on the willing-seller-willing-buyer model, lack of institutional capacity, cumbersome beneficiary selection process, land beneficiary resettlement support, and inadequate programme’s monitoring and evaluation. There is an urgent need for the government to institute measures to address the challenges preventing the smooth implementation of the land redistribution programme in South Africa. These challenges prevent the programme’s beneficiaries from accessing the land, thus preventing them from experiencing socio-economic emancipation as promised.
Development of Mangrove Ecotourism in Bandar Bakau Dumai Based on Disaster Mitigation
Authors: Mulyadi Aras , Efriyeldi  , Hamidy Rasoel , Nofrizal
Published: December 2021

Natural disasters that occur in the city of Dumai such as degradation of mangrove forests, coastal abrasion and tidal flooding can be mitigated by maintaining the existence of mangrove forests. Mangrove forests have important benefits on the coast of the city of Dumai, so they need to be protected together. One of the efforts to maintain the existence of mangroves can be through the use of mitigation-based mangrove ecotourism, especially in the Bandar Bakau area of Dumai City. The data collection technique in this study used a quadratic transect and added secondary data from the relevant agencies. Based on the results of the study found 9 types of mangroves that have a role as mitigation in ecotourism locations and there are biota supporting tourism, namely 13 species of birds, 7 species of reptiles and 16 species of molluscs. To maintain the sustainability of the ecotourism area of Bandar Bakau, several disaster mitigations have been carried out for retaining cliffs (revetment), reforestation of mangroves, construction of facilities that adapt to the environment, coastal education, and outreach to the community. In addition, it is very potential to develop several other forms of mitigation such as: beach nourishment, breakwater or construction of embankments to minimize abrasion, as well as construction of diversion canals and tidal flood control gates, strengthening regulations. legislation, making land use policies, policies on flood and wave resistant building standards, policies on exploration and community economic activities, promoting local cultural wisdom of maritime communities.
The composition and heterogeneity of the rich and diverse rotifers (Rotifera: Eurotatoria) of the floodplain lakes (beels) of the Majuli River Island, Assam State (Northeast India)
Authors: Sharma Bhushan Kumar , Sharma Sumita
Published: December 2021

The tropical and subtropical floodplain lakes are hypothesized as one of the globally interesting rotifer rich ecosystems. Our study indicating the biodiverse Rotifera of ten ‘slightly acidic to circum-neutral, moderately hard-water and de-mineralized’ tropical floodplain lakes (beels) of the Majuli River Island of the Brahmaputra river basin of northeast India mendorses this hypothesis. Total richness, the richness of important families and community similarities affirm heterogeneity mof the rotifer species composition amongst the beels. The species richness registers significant spatio-temporal variations with seasonal differences amongst the beels and individually in each beel, and lacks significant influence of the recorded abiotic factors. The constellations of 76-81 species in three beels during winter and 76 species in one beel during pre-monsoon are noteworthy instances of ‘Rotifera paradox’. The rotifer fauna of the Majuli beels registers affinity with Southeast Asian and Oriental faunas, records several species of the regional distribution interest and exhibits the littoral-periphytic nature, while application of Q B/T and Q L/B quotients depicts limitations. This study merits ecological diversity interest for Rotifera vis-avis the floodplain lakes of India and elsewhere from the tropics and subtropics, and assumes biodiversity conservation importance due to threat of extinction of the Majuli – an alluvial floodplain of the Brahmaputra basin.
On the Diplectroninae and Hydropsychinae (Trichoptera) of India, with related taxa. A tribute to Fernand Schmid
Authors: Oláh János , Vinçon Gilles , Johanson Kjell Arne
Published: December 2021

The overall declining state of the western taxonomy is clearly documented by the present fate of the extremely high valued and huge unidentified caddisfly material collected in India and deposited in the Canadian National Collection. Due to the general lack of both financial and scientific resources in taxonomy, this huge collection remained almost untouched during the last 70 years after its collection. With a tribute to the collector, Fernand Schmid, the great caddisfly collector and taxonomist we have reconstructed his collecting activities of the five years in India by geolocalization and elaborated about ten percent of his undetermined Hydropsychidae in the Diplectroninae and Hydropsychinae subfamilies. Description of 145 new species from this small fragment of the huge unidentified collection demonstrates a pronounced underestimation of the biodiversity in general, routinely measured by gross phenomics. During this study we have reinstated the species status of seven taxa: Diplectrona kirimaduhela Sch
Phylogenetic Relationships of ChineseCoptotermes(Blattodea: Isoptera: Rhinotermitidae) Termites and a New Synonym Inferred from Morphological Data
Authors: Ke Yunling , Zhang Shijun , Li Zhiqiang
Published: December 2021

Coptotermes (Blattodea: Isoptera: Rhinotermitidae) is an economically important genus. There are many problematic taxa within the genus because of small differences between different species and large variations within the same species with respect to morphology. Coptotermes species, especially those in China, are in need of careful monographic revisions. In this paper, type specimens of 14 Coptotermes species were reexamined. Their relationship was preliminarily studied with statistical methods. The phylogenetic relationships among the 21 species that are recorded in China were investigated based on soldier morphological characters. The cladistic analysis inferred that Chinese Coptotermes species are divided into two main clades and there were some species closely related to C. formosanus Shiraki and C. gestroi (Wasmann), respectively. Based on a comparison of measurement data of the closely related species C. cochlearus Xia and He and C. gestroi in the cladogram, we propose that C. cochlearus is a new synonym of C. gestroi. In the situation where it is difficult to obtain more molecular data of Chinese Coptotermes species, the present work serves as a basis for further revisionary work on Coptotermes.
Anton Vitalievich Nemilov: A Versatile Talent
Authors: Mikhalkina M. V. , Mikhalkin K. P.
Published: December 2021

The article is dedicated to the outstanding Russian histologist Professor Anton Vitalievich Nemilov, who, being a student of St. Petersburg Imperial University, was one of the first students of Alexander Stanislavovich Dogel, the world-famous Russian scientist, the founder of neurohistology. Having so far shown a bright talent of a researcher and experimenter in his student years, Anton Vitalievich was invited to prepare for a professorship at the university and over and above met expectations based on him. He significantly contributed to the development of neurohistology, histophysiology, including histophysiology of the reproductive system. Anton Vitalievich did a lot for development of endocrinology, which he studied in a general biological but not in a purely medical aspect; this was new and valuable for that period. Finally, he made his contribution to the development of cell theory. A talented teacher, an excellent lecturer, an author of a number of brilliant textbooks, a consummate popularizer of science, an active public figure – Anton Vitalievich demonstrated so many diverse talents during his life, which was not really long, that their combination in one person seems simply unbelievable. His life was in full swing, he was full of creative plans, but the Great Patriotic War prevented their implementation. It started when Anton Vitalievich was 62 years old. Professor A.V. Nemilov wanted to continue research at his native Leningrad University, refused to be evacuated, and remained in the besieged city. With his peculiar enthusiasm, Anton Vitalievich joined defense work, angrily denounced fascism in his articles and radio speeches. However, hunger and cold of the blockade undermined his strength, and he died of exhaustion on February 2, 1942. He was under 63 years old. The article dedicated to Anton Vitalievich Nemilov presents milestones of his life and work, his contribution to science, his professional and personal traits. The paper also highlights his participation in the fight against fascism and tragic death during the blockade of Leningrad.
A Contemporary View on the Anatomy of Parotid Gland
Authors: Chernyavskii V. I. , Truten V. P. , Abduvosidov Kh. A. , Tolstykh M. P.
Published: December 2021

One of the up-to-date issues of contemporary medicine is the study of the features of individual anatomical structure variability of various organs. In recent years, the incidence of parotid gland diseases has been rising. This phenomenon can be associated with an absolute increase in this organ pathologies incidence as well as with the development of additional methods of examination and visualization of the gland. Most pathologies of major salivary glands, in particular the parotid gland, require surgical treatment. Knowledge of topographical relationship of the parotid gland with the adjacent vessels and nerve trunks is utterly necessary for planning and performing surgical interventions and reconstructive operations in the parotid region. According to the statistics, surgical interventions on the parotid gland take the leading place among the causes of damage to the facial nerve branches. This fact may also prove a large variation in the syntopy of the facial nerve and the parotid gland. The paper reviews the data of native and foreign literature on the anatomy of parotid gland and the place of radiation research methods in the study of its topographical and anatomical features. The analysis revealed a wide range of anatomical norm of parotid gland in many parameters, including shape, linear size, blood supply, and topographical features. The practice of using anthropometric studies aimed at structuring the existing knowledge and narrowing the borders of anatomical norm for various organs proved to be successful. However, in the pool of scientific papers, we have not found similar studies concerning parotid gland. The facts mentioned above make the background and justify further studies of parotid gland in the context of normal individual variability.
A iniciação da escrita acadêmica em um curso de licenciatura em Ciências Biológicas
Authors: Tiburzio Vera Lucia Bonfim , Barbosa Marinalva Vieira
Published: December 2021

Este artigo apresenta uma análise do percurso de iniciação à escrita de projeto de pesquisa por alunos iniciantes do Curso de Licenciatura em Ciências Biológicas de uma universidade pública. O foco das análises não recaí sobre os procedimentos metodológicos atinentes ao ensinar a escrever na universidade, mas sobre a escrita e sobre o modo como o aluno se relaciona com a escrita acadêmica ao iniciar a graduação. Os dados resultaram de um trabalho de ensino da escrita, desenvolvido em um semestre, ancorado na concepção de que o aprendizado da escrita envolve escrever e reescrever, em que 05 grupos de alunos produziram coletivamente projetos de pesquisa na disciplina “Estudos e Desenvolvimento de Projetos (EDP I). Versões das introduções e desenvolvimento da metodologia de quatro destes projetos são analisadas, focando questões relacionadas à escrita do desenvolvimento do tema, uso de senso comum como argumentos, desenvolvimento da clareza e coerência textual e a relação com a palavra do outro, especialmente o plágio. Os resultados mostram que os alunos apresentam pouca familiaridade com as formas de escrita típica dos gêneros acadêmicos, como projetos e artigos, e sobre o que é fazer uma pesquisa; principalmente, apresentam falta de familiaridade com os percursos necessários à construção de um gênero acadêmico como o projeto de pesquisa. No entanto, com as oportunidades promovidas pela disciplina, foi possível perceber o progresso de alguns grupos que passaram a apresentar fundamentação teórica mais consistente, no que diz respeito a qualidade e relevância das fontes citadas e melhora quanto a clareza e organização lógica da redação do projeto final. O pensar e produzir a escrita orquestrada a partir da reescrita foi uma oportunidade de auto diagnóstico dos alunos sobre as potencialidades e fragilidades nesse campo de escrita.
Business model as an innovation
Authors: Romanowski Robert , Wieja Magdalena
Published: December 2021

Business model is the way in which an organization develops relationships with their market environment and converts products into cashflow. The chapter focuses on business model as a type of economic innovation. This chapter provides a case study on CD Projekt Red company, the publisher of the Witcher games series. The case of the game covers three types of innovations, i.e., business model, product performance and customer engagement, and is an example of multidimensional innovation process. The case is related to both innovation types: business models and customer experience ones. The aim of this chapter is to diagnose business model innovations on the basis of The Witcher 3: Wild Hunt game created by CD Projekt Red.