bluuebunny/crossref_metadata_2025 huggingface dataset:
El capital humano e intelectual como catalizador de la gestión organizacional
Authors: Jiménez Rodríguez Luis , Gamboa-Suárez Ramiro
Published: June 2024

El documento precedente tiene por objetivo, esbozar una opinión desde el punto de vista de la gestión actual de la organización, en cuanto a su estrecho vínculo con el activo más preciado que posee, formado este por la sumatoria de todos y cada uno de sus colaboradores. Reconociendo eso sí, que gran parte de sus usuarios internos, están sumidos en una necesidad y verdad única, formada esta por el recurso monetario, siendo casi siempre la primicia fundamental para el buen actuar dentro de las organizaciones, y muchas otras veces desconociendo, desacatando u omitiendo el deber ser de su relación con la organización. El carácter del ensayo es documental, con contenido de vivencias personales y aspectos de casos reales. Debo, aclarar entonces, que muchas veces el manejo y control del recurso humano se hace complejo, esto dado, por nuestras costumbres banales y lo difícil de la situación ética y moral de la actualidad. Indudablemente el factor moral y ético es fundamental, para que la persona con su actitud y compromiso, permita que la organización cumpla su objetivo de ser socialmente responsable y que provea los medios para que la cultura organizacional, permita el cambio de paradigma social y sus colaboradores sean factores claves del éxito. Entender que el capital intelectual se comporta y ha sido considerado como un intangible, el cual a la luz de la gerencia moderna le traslada valor a la organización. Como acápite final concluiremos que quienes ejercen la administración en las organizaciones que aunque conocen del proceso administrativo moderno, en muchas ocasiones no infieren sobre las consecuencias de tener el recurso humano aislado, sabiendo de su papel preponderante, y aceptando que su actuación en la realidad es otra.
Implementación de un sistema de refrigeración líquida para un equipo de cómputo con base en celdas de peltier
Authors: Castiblanco Sepúlveda Angel David , Aldana Perez Jefersson Jair , Peñaranda-Delgado Johan Humberto , Serrano Arias Wilmer Nemesio , Ovalles Pabón Freddy Oswaldo
Published: June 2024

El proyecto consiste en la elaboración de un sistema de refrigeración líquida o watercooling que sea más efectivo y económico que los sistemas de enfriamiento convencionales y comerciales para la aplicación de Overclocking a los equipos de cómputo en situaciones de Gaming y de Renderizado, dicho sistema consistirá en diversos radiadores ó Waterblocks, que tendrán como función la regulación de altas temperaturas producidas por los circuitos integrados de la CPU y GPU. El circuito hidráulico de este sistema consistirá en un almacén de agua donde esta será impulsada hacia los diferentes Waterblocks que se encargan de enfriar el líquido con la utilización del efecto Peltier y a su vez este se encargará de refrigerar los microprocesadores, el calor emanado por las celdas de Peltier será compensado por disipadores con ventiladores o Coolers.
Procesos estocásticos aplicados en análisis de datos de degradación-revisión de literatura
Authors: Quezada del Villara Andrea Viridiana , Rodríguez Picón Luis Alberto , Pérez Olguín Iván Juan Carlos , Rodríguez Borbón Iván
Published: June 2024

El mejorar, calcular y proyectar la confiabilidad de productos es una tarea fundamental hoy en día en la industria. Los dos modelos de procesos estocásticos más comunes en la literatura y aplicaciones son los procesos de Gamma y Wiener. Sin embargo, ambos modelos son insuficientes para ajustar todos los datos de degradación y existen aplicaciones en las que no ajustan en absoluto y pueden llevar a conclusiones erróneas, por lo que el proceso inverso Gaussiano es una opción muy atractiva para los datos de degradación. Con el fin de comparar los procesos Wiener, gamma e inverso Gaussiano, se realizaron búsquedas de literatura escrita (libros y artículos) e información vía internet (librerías virtuales, Google Académico y diferentes bases de datos) con lo que se obtuvo algunas aplicaciones en diferentes áreas de estudio y la tendencia del uso de los diferentes procesos a través de los últimos años. Además, de identificar características y diferencias entre cada uno de los procesos estocásticos.
Alcance de las responsabilidades de las fiscalías de Venezuela y Colombia en la franja fronteriza “estudio de caso por homicidios”
Authors: Garcia Salazar Sindy Yanireth , Rojas-Ovalle Jaime Fernando , Barrientos Monsalve Ender José
Published: June 2024

El propósito de la presente investigación fue develar las experiencias de los fiscales de Colombia y Venezuela bajo los casos en la franja fronteriza entre San Antonio del Táchira y Villa del Rosario, esto motivado a las situaciones presentadas en las zonas que no alcanzan a controlar las competencias legales de ambos países, asimismo se realizó por medio de una investigación interpretativa, en donde para tal fin se aplicaron entrevistas a los informantes claves, siendo estos fiscales de ambos países y con esto poder establecer un conocimiento basado en sus experiencias, esta investigación tuvo como resultado que en ambos países se actúa apegado a la ley en donde establece que para proceder en la parte fiscal se debe tener primeramente una denuncia o también pudiera proceder por alguna denuncia pública que realizara algún medio de comunicación.
Early Functional Outcome of Total Hip Arthroplasty in Elder Patients with Displaced Femoral Neck Fractures
Authors: Saeed Muhammad , Waqar Muhammad , Arif Muhammad
Published: June 2024

Background: Displaced femoral neck fractures in elderly patients pose a significant orthopedic challenge due to their association with high morbidity and mortality rates. Effective management of these fractures is crucial to improving patient outcomes and quality of life. Total hip arthroplasty (THA) is considered a beneficial surgical intervention, offering superior functional outcomes and lower complication rates compared to other treatments.
Objective: To determine the early functional outcome of total hip arthroplasty in elderly patients with displaced femoral neck fractures.
Methods: This descriptive study included sixty patients aged 50 to 80 years with displaced femoral neck fractures, treated with total hip arthroplasty at Hayatabad Medical Complex from October 2023 to April 2024. Preoperative assessments included radiographs and various blood tests. Functional outcomes were measured using the Harris Hip Score (HHS) at six months postoperatively. Data were analyzed using SPSS version 26, and the paired t-test was used to compare preoperative and postoperative HHS scores, with P ≤ 0.05 considered significant.
Results: The mean age of the sixty patients was 64.80±9.08 years. The mean preoperative HHS was 74.42±10.49, which significantly increased to 84.95±8.65 at the six-month follow-up (P = 0.0001). Postoperative complications included infections in 2 patients (3.3%) and hip dislocations in 3 patients (5%). No complications were observed in 55 patients (91.7%).
Conclusion: Total hip arthroplasty is an effective procedure for elderly patients with displaced femoral neck fractures, demonstrating significant improvements in functional outcomes and a low incidence of complications.
Efficacy of Maitland Mobilization Along with Strengthening Exercises Compared with PNF Technique in Treatment of Adhesive Capsulitis
Authors: Hina Tariq  , Hina Ghulam Murtaza  , Maham Fatima Tanveer  , Ans Abrar  , Rukhma Mauzzam  , Usman Iqbal Janjua  , Hassan Mahnoor
Published: June 2024

BACKGROUND: Adhesive capsulitis commonly known as frozen shoulder, is the disease of shoulder in which the shoulder becomes inflamed, stiff, and have restricted ROM. It is more common in females than in males. The common age of its onset is mid-fifties.
OBJECTIVE: The aim of the study was to compare the effects of Maitland mobilization along with strengthening exercises and PNF technique and to evaluate the more effective protocol for the treatment of adhesive capsulitis.
METHODOLOGY: This study was a randomized clinical trial with a sample size of 32 members, conducted at Al-Rae Trust Hospital Gujranwala. Participants were randomly assigned into Group 1(Maitland mobilization along with strengthening Exercises) and Group 2 (PNF technique). Each group consisted of 16 participants. The duration of each intervention was 3 sessions per week for 1 month. The participants were assessed by SPADI scale, Numeric pain rating scale, and Goniometer at baseline, after the 2nd and 4th week of treatment.
RESULTS: One way ANOVA and Repeated measures ANOVA were applied to infer results with a 95% confidence level, the level of significance of 0.05 was considered statistically significant. The mean age of subjects was recorded as 51.25±4.938. Out of 32 patients, 11 patients (34.48%) were Males, and 21 patients (65.63%) were Females. For Numeric Pain Rating Scale and SPADI, results demonstrate that significant differences is present in between both groups having significant value of p<0.05.
CONCLUSIONS:  The study concluded that Maitland mobilization along with strengthening exercises showed more significant results reduction in pain, stiffness, and increased ROM for patients with adhesive capsulitis.
KEYWORDS: Arthritis, Physical conditioning, Adhesive capsulitis, Physical Therapy, Activities of daily living
Speech Delay and its Association with non-Nutritive Nursing in Pre-schoolers
Authors: Ayesha A. Saleem  , Dr Hina Azhar  , Bushra Mazhar  , Fatima Rasool  , Muneeba Ijaz
Published: June 2024

Background:
Speech delay in preschoolers is a significant concern for parents and healthcare professionals alike, with various factors, including non-nutritive sucking habits like pacifier use and digit-sucking, being investigated for their potential impact on speech development.
Objective:
This study aimed to investigate the association between non-nutritive sucking behaviors (pacifier use and digit-sucking) and speech delay in preschool-aged children.
Methods:
A cross-sectional design was employed, involving 126 preschoolers divided into two groups: those with speech delay and a control group with typical speech development. Data were collected from the Children’s Hospital and Institute of Child Health, Lahore, using a structured questionnaire covering demographics, breastfeeding history, non-nutritive sucking behaviors, and speech delay status. Statistical analysis was conducted using SPSS version 25, focusing on frequencies, percentages, and P-values to determine the significance of associations between non-nutritive sucking behaviors and speech delay.
Results:
Of the 126 participants, 67% were male, and 93% hailed from Punjab. A majority (87%) were breastfed, with 27% reporting pacifier use and only 6% engaging in digit-sucking. Statistical analysis revealed no significant association between speech delay and pacifier use (P=0.123), digit-sucking (P=0.359), or breastfeeding status (P=0.395). The mean daily screen media usage was 3.121 hours for the speech delay group and 2.968 hours for the control group, with no statistically significant difference (P=0.593).
Conclusion:
The study concluded that non-nutritive sucking behaviours, including pacifier use and digit-sucking, are not significantly associated with speech delay in preschoolers. This finding contributes to the understanding of speech development and the factors influencing it, suggesting that concerns regarding non-nutritive sucking habits may be less critical than previously assumed in the context of speech delay.
Keywords:
Speech delay, Non-nutritive sucking, Pacifier use, Digit-sucking, Preschoolers, Speech development.
The Effect of Hydrothermal Products of Biomass Waste on the Growth of Pak Choi
Authors: Xu Chuanyang , Tang Jianheng , Yang Ying , Xu Qing , Shi Yuting , Cao Geng
Published: June 2024

To achieve the utilization of biomass waste as fertilizer, this study processed vegetable waste and pig manure using hydrothermal methods and conducted pak choi planting experiments with the products. The results showed that among treatments using vegetable hydrothermal solid products, S210B performed the best in terms of yield and plant height of pak choi, with increases of 29.98% and 15.38% compared to CK, respectively. The nutrient content (NPK) of pak choi was best in the S180B treatment, with increases of 13.17%, 15.87%, and 13.69% compared to CK, respectively. Treatments with hydrothermal liquid products showed significantly better performance in yield, plant height, and stem circumference than those with solid products, with Y210 (30) diluted 30 times showing the best performance. All treatments with pig manure hydrothermal products promoted the growth of pak choi after 60 days of planting, with ZF180 showing the best improvement in all characteristics.
Research on the Drying Process and Nutritional and Functional Activities of Walnut Meal Powder with High Added Value
Authors: Zhong Meng , Rong Ruifen
Published: June 2024

The optimal drying process for walnut meal was determined, and the antioxidant and lipid-lowering functions of walnut meal powder extracts were evaluated to achieve high-value utilization of walnut meal. Walnut meal after desalination was dried using low-temperature hot air drying, microwave drying, and vacuum freeze drying, followed by sieving through a 60-mesh sieve. The vacuum freeze drying process was identified as the optimal drying method based on the determination of polyphenol, flavonoid, polysaccharide, and protein contents, with polyphenol content at 22.88 mg/g, flavonoid content at 0.71 mg/g, polysaccharide content at 16.37 mg/g, and protein content at 91.7 mg/g. Using this as the raw material, the antibacterial circles of the water and alcohol extracts of walnut meal powder against Escherichia coli OP50 were determined. The effects of water and alcohol extracts of walnut meal powder at concentrations of 1.25 mg/mL, 2.5 mg/mL, and 5 mg/mL on the malondialdehyde (MDA) content, superoxide dismutase (SOD) activity, glutathione peroxidase (GSH-PX) activity, catalase (CAT) activity, triglyceride (TG) content, oil red O staining, and optical density of Caenorhabditis elegans (C. elegans) were evaluated to assess their antioxidant capacity and lipid-lowering effects. The results showed that within the concentration range of 1.25 mg/mL to 5 mg/mL, both the water and alcohol extracts of walnut meal powder could increase the activities of SOD, CAT, and GSH-PX in C. elegans, reduce the content of the oxidative product MDA (P<0.05), and decrease the TG content in C. elegans, thereby reducing fat deposition. Moreover, the antioxidant capacity and lipid-lowering effects increased with increasing dosage, with the alcohol extract of walnut meal powder exhibiting higher activity than the water extract.
Remissions in periodic catatonia
Authors:   Mental Health Research Center, Lobanova V.M. , Piskarev M.V. , Ilyina N.A.
Published: June 2024

At the current stage of the formation of concepts of endogenous psychoses, due to the change in the clinical paradigm – the expansion of the boundaries of catatonia to a level involving the inclusion of a wide range of periodically manifesting motor disorders (varying in severity), the study of remissions that form after attacks of periodic catatonia is of particular relevance. The aim of the study is to develop a typology of remissions formed after the onset of periodic catatonia attacks, which occur in the clinical space of schizophrenia and schizophrenic spectrum disorders (RSHS). Research methods: clinical and catamnestic (observation for more than 3 years after the onset of seizures), psychometric (BFCRS, SANS, GAF), statistical. The study material consisted of 30 patients diagnosed with schizophrenia and RSHS (ICD-10; DSM-5) who are under outpatient supervision after inpatient treatment of periodic catatonia attacks in departments 1 and 2 of the Federal State Budgetary Institution of the National Clinical Hospital. Results: within the framework of this study, a new approach to the systematics of remissions has been developed, which is based not only on remissions reflecting a certain stage in the development of the endogenous process (slowing down, stabilization, reduction of symptoms) and social and labor maladaptation, but also remissions, in the formation of which the dynamics of personality disorders participates. In accordance with this, 2 types of remissions are distinguished: 1) remissions with personalized motor phenomena – type of personality development (psychasthenic/hypochondriac circle), prolonged; 2) symptomatic remissions, with signs of ongoing course, with symptoms of catatonia mitis.
Assessment of nasal symptoms in combination with neurocognitive testing in patients with chronic polypous rhinosinusitis
Authors:   Kuban State Medical University, Kosenko V.G. , Elizbaryan I.S. , Lazareva L.A. , Kolomiets E.A. , Ostrovskaya K.R.
Published: June 2024

The sinonasal symptoms inherent in chronic polypositis rhinosinusitis have a complex effect on the central structures of the patient's nervous system. The study of impaired cognitive and mnestic functions in this category of patients allows us to form a comprehensive understanding of the symptom complex of clinical manifestations and affect therapeutic tactics. Objective: to conduct a comprehensive comparative analysis of clinical and functional indicators characterizing nasal symptoms in patients with chronic polypous rhinosinusitis and cognitive tests in the pre- and postoperative period. Materials and methods: testing was performed in 45 patients with polypous rhinosinusitis (PRS) with a long history of the disease (M= 117 months). The age of the study group was from 22 to 65 years (M=48.964 years), without concomitant chronic pathology. The scope of clinical testing included the SNOT-22 sinonasal symptoms scale, Lund-Mackey tests and active anterior rhinomanometry (ml/sec). Changes in X-ray examinations (CT ONP) were evaluated on the Lund-Kennedy scale. Cognitive abilities were tested on the basis of the MoCA test in points with subsequent interpretation by a psychiatrist. The evaluation of the indicators was carried out before the surgical treatment of PRS, after 1 and 6 months. Results: The results were obtained to reduce the indicators of sinonasal symptoms on the SNOT-22 scale from M=31.42 before surgery and up to 4.04 points after 6 months; the Lund-Kennedy scale from M=7.87 to M=0.38 points; the Lund-Mackey scale from M=15.49 to M =0.47 points at the final stage. The indicators of active anterior rhinomanometry tended to increase from M=399.04 ml/sec before surgery and M=856.60 ml/sec after six months. Testing of neurocognitive disorders according to MoHS in patients preoperatively demonstrated average values of 21.49 points, which indicated the presence of mild variants of disorders. Further testing made it possible to obtain indicators of 25.38 points after 1 month, which were fixed during the study after 6 months. Conclusion. An interdisciplinary approach to the assessment of clinical manifestations in patients with polypous rhinosinusitis, based on the inclusion of testing of neurocognitive disorders in the study, allows for a more complete assessment of the impact of the pathological process on the patient's body. The inclusion of the MOS test in the complex of pre- and postoperative studies allows us to form an individualized approach to the implementation of therapeutic and rehabilitation measures in this category of patients.
evaluation of the efficacy and tolerability of cariprazine in patients with paranoid schizophrenia
Authors:   N.I.Pirogov Russian National Research Medical University of the Ministry of Health of the Russian Federation, Dorovskih I.V. , Pavlova T.A. ,   «City Clinic» Medical Center
Published: June 2024

Despite the emergence of a large number of new antipsychotics in recent decades, the therapy of schizophrenia, especially its paranoid form, remains a difficult and urgent task for practicing psychiatrists. This is primarily due to the complexity and often polymorphism of the clinical picture of the disease, the predominance in the structure of one or several characteristic symptom complexes – hallucinatory-paranoid, affective-delusional, senesto-hypochondriacal. The onset of paranoid schizophrenia at a young age makes it difficult to select a drug for therapy, which, along with a pronounced antipsychotic effect, a positive effect on both productive and negative symptoms, should have good tolerability in general and a favorable neuroendocrine profile, which will minimize the risk of the patient refusing therapy and maintain his social and labor functioning. As well as the therapy of elderly patients and patients with comorbid neurological, cardiovascular, and endocrine diseases, it also requires careful selection of the drug, taking into account its possible adverse effects and effects on the course of concomitant diseases. We present a number of clinical observations that demonstrate the effectiveness of the third–generation antipsychotic cariprazine – as a powerful antipsychotic drug with a favorable safety profile, providing high adherence to therapy and successfully used both in young patients with a complex clinical picture of paranoid schizophrenia, including those resistant to psychopharmacotherapy, and in patients with poor tolerability of drugs of various groups and the presence of concomitant somatic pathology.
Keşanlı Zihnî Dîvânı’nın Müellif Nüshasındaki Arapça Şiirler ve Risalelerin İncelenmesi
Authors: Avcı Hüseyin
Published: June 2024

Klasik Türk Edebiyatında kaleme alınan divanlar Türkçenin dışında Farsça ve Arapça yazılan manzum ve mensur çalışmaları da bünyesinde barındırmaktadır. Türkler, İslam dinine girişlerinden itibaren, özellikle de Selçuklu döneminde Arap ve Fârisî halklarla birlikte yaşamış, edebiyat alanında da hem Klasik Türk Edebiyatının başladığı dönem itibariyle hem de coğrafî-kültürel şartlar gereği Arap ve Fars Edebiyatından etkilenmişlerdir. Denilebilir ki Klasik Türk Edebiyatı, Arap Edebiyatı ve Fârisî Edebiyatı iç içe geçmiş, hem şekil hem de içerik anlamında birbirlerinin tesiri altında kalmışlardır. Keşanlı Zihnî Divanı hakkında günümüze dek muhtelif araştırmacılar tarafından çalışmalar yapılmıştır. Ancak divanın müellif nüshası da olan İspanya nüshası ilk olarak Muhammet Nalbat tarafından gündeme getirilmiş ve bir makaleyle tanıtılmıştır. İçeriğinde gazeller, kasideler, kıtalar ve mensur metinler barındıran müellif nüshasında diğer nüshalardan farklı olarak Arapça şiirler ve Arapça mensur bölümler de bulunmaktadır. Müellifin bizzat kaleme aldığı ve diğer nüshalarda bulunmayan bazı bilgiler de ihtiva eden bu nüsha şairin tüm çalışmalarını topladığı bir külliyat mahiyetindedir. Bu çalışmada divanda geçen söz konusu Arapça şiirler ve risaleler incelenecek ve Türkçeye tercümesi yapılacaktır.
Economic Growth and Environmental Sustainability in Low and Middle-Income Countries by Using System Generalized Method of Moments
Authors: Mizanur Rahman Md. , Rahman Arifur , Ali Feroze , Sher Khan Khan
Published: June 2024

This study estimated the relationship between environmental sustainability and economic growth in low and middle-income economic countries. The study used robust and strongly balanced panel data from 2008 to 2021. The advanced econometric approach two different variants of the System Generalized Method of Moments (one-step-SGMM and two-step-SGMM) were used for empirical analysis. The analysis shows a significant association between environmental sustainability and economic growth in projected economies. Logistic infrastructure, gross capital formation, labor force participation rate, and carbon dioxide emission are independent variables and significantly affect our dependent variable, GDP per capita. The finding of the one-step SGMM showed that the logistic performance index and CO2 emission are statistically significant for economic growth in particular countries. Thus, gross capital formation is also statistically significant and positively affects our economic growth of the economies. Similarly, the labor participation rate has a positive and significant impact on the economic growth of low-income countries. Besides, in two-step SGMM, all independent variables, Logistic infrastructure, gross capital formation, labor force participation rate, and carbon dioxide emission, significantly affect our dependent variable economic growth. The results of the autocorrelation tests indicate potential serial correlation in the models' errors. The findings of this study suggested that policymakers must adopt complete approaches that arrange sustainable development goals, mitigate environmental degradation, and promote inclusive economic growth to ensure a prosperous and resilient future for all.
Impact of Social Media Influencer Traits on Brand Equity in Pakistani Context: The Role of Gender as Moderator
Authors: Naz Saman , Sajid Tufail Muhammad , Zahoor Abid , Fatima Javeria
Published: June 2024

The purpose of this research article is to explore the influence of social media influencer characteristics on brand value in Pakistan, with a particular focus on the moderating role of gender. This study focuses on how influencer characteristics such as attractiveness, trustworthiness, and likability influence consumer perceptions and attitudes toward brands. In this study, cross-sectional research was used, and data was gathered via questionnaires distributed to university students in Multan, Pakistan, using convenience and stratified sample techniques. Furthermore, analyzing the data collected, the SPSS and Process Macro by Hayes showed that influencer traits do have an impact on brand equity and the role of gender as a moderator. These traits were seen to have a more substantial effect on females compared to males. The study discusses the implications of these findings for marketing strategies and acknowledges limitations, such as the sample's demographic concentration and the reliance on self-reported data. This study is significant as it provides insights into tailoring marketing strategies to effectively reach and engage different demographic segments, increasing brand equity in the digital age.
Spatio-Temporal Assessment of Drinking Water Source in Gujranwala (Pakistan)
Authors: Mahmood Khalid , Nawaz Ayesha , Ramzan Saira , Faizi Fiza , Ali Bisma
Published: June 2024

Improved living standards and unplanned urban growth are putting pressure on the environment and disturbing the sustainability of resources. This research has been conducted to study the effects of these irregularities in the natural ecosystem on groundwater resources. The residential area of Gujranwala, Pakistan, has been chosen as the case study. The study involves the spatio-temporal analysis of pH, Total Dissolved Solids (TDS), and Turbidity (TUR) in groundwater of the study area from 2014 to 2017. Geographical layers of all the available observations were prepared after optimizing the best interpolation method based on most minor the root mean square error. Although the measured concentration of the studied parameters was all well within the range of the safe limits for drinking water, due to anthropogenic activities, minute changes are occurring that need to be highlighted and addressed well in time. Spatio-temporal maps prepared over a standard scale have led the analysis to various details, i.e., for all three parameters in the beginning year of 2014 difference between pre- and post-moon soon patterns were very prominent that have faded away in coming years, showing decreasing recharge rates and any chemical changes caused by it. Both pH and TDS measurements show a continuous increase in their concentration with time, with maxima found in the year 2017. A different behavior has been found for turbidity, where the maximum value occurred in 2014, faded away in the next two years, and started increasing again in the final year of 2017. This assessment will help policy makers for better planning, leading to a sustainable and healthy society and achieving sustainable development goals of the United Nations.
Assessment of Wheat Crop Water Productivity of Larkana District: A Remote Sensing Approach
Authors: Aziz Tarique , Begum Ruksana , Us Saqib Fraz Najam , Shah Ghunwa
Published: June 2024

The growing global population is driving up food demand, which in turn is exerting pressure to boost crop production. Therefore, there is a need to improve crop production using limited resources. This study uses satellite imagery to estimate crop water productivity (CWP) in the Larkana district of Sindh province, Pakistan. Wheat was selected as the subject crop in this study due to its significant importance in the Pakistan Rabi crop season. The processed satellite data were obtained from the Google Earth Engine Evapotranspiration Flux (EEFlux), a version of Mapping Evapotranspiration at High Resolution with Internalized Calibration (METRIC), a land image-based process. The wheat growing period spans 160 days, from November 1, 2017, to April 10, 2018. The results showed that the mean actual evapotranspiration (ETa) values for the initial, development, mid, and late stages were 28.14, 67.95, 162.8, and 92.83 mm, respectively, with total consumptive use for the season being 358 mm. The CWP of wheat was found to be 0.89 kg/m³, higher than Pakistan's average of 0.76 kg/m³. However, the CWP in the Larkana district is lower than that in developed countries such as Germany and France, where it equals 1.42 and 1.35 kg/m³, respectively. The findings emphasize the importance of utilizing advanced remote sensing technologies to enhance agricultural water management, which is crucial for improving food security and promoting sustainable farming practices in water-scarce regions.
Analisis Rasio Keuangan Untuk Menilai Kinerja Keuangan Pada PT Gudang Garam Tbk
Authors: Putri dianingtyas  , Annisa Purwandari  , Muhammad Ibra Muchtari  , Rizka Aulia  , Novita sari
Published: June 2024

Dalam sistem tenaga listrik yang melayani beban secara kontinyu sebaiknya tegangan dan frekuensi harus tetap konstan, namun apabila terjadi gangguan pada salah satu pembangkit atau pada rel maka hal ini tidak dipungkiri akan terjadi gangguan pada penyaluran daya. Untuk itu perluh dilakukan Penelitian tentang Stabilitas Sistem Tenaga yang berkaitan dengan Penentuan Sudut Pemutus Kritis dan Waktu Pemutus Kritis pada generator, guna mengetahui berapa besar Sudut Pemutus Kritis dan berapa besar Waktu Pemutus Kritis. Dalam penelitian ini digunakan Metode Runge Kutta orde 4 dengan bantuan softwere Matlab.
Cercamentos expropriatórios sobre os grupos comunitários na Amazônia
Authors: Matos Lucas
Published: June 2024

Neste artigo, analisam-se aspectos dos conflitos territoriais resultantes do atual fenômeno de invasão de Áreas Protegidas e territórios comunitários na Amazônia. Foi utilizado como exemplo da realidade empírica o complexo conflito entorno da reserva em bloco, que é parte integrada ao PA Margarida Alves, em Rondônia. Recortam-se as principais características do conflito, selecionando a atuação das agromilícias na disputa por terra e madeira. Os conflitos territoriais sobre as Áreas Protegidas e territórios comunitários na Amazônia são localmente formados/impulsionados pelo choque de forças exógenas e coerências territoriais endógenas, que vão desde as projeções dos grupos políticos e econômicos (manejo florestal, pecuária, monoculturas, garimpos, etc.) aos regimes de expropriação/cercamentos exercidos no cotidiano por agromilícias sobre as áreas ricas em recursos naturais na Amazônia habitadas por comunidades camponesas.
Caracterização geoambiental da microbacia hidrográfica do rio Grajauzinho, Maranhão, Brasil
Authors: Reis Gerson da Silva Costa , Silva Edilma Fernandes da
Published: June 2024

Este estudo almeja contribuir com uma caracterização geoambiental da microbacia hidrográfica do Rio Grajauzinho, localizado predominantemente em Formosa da Serra Negra, no Maranhão. O desenvolvimento da pesquisa contou com estudos bibliográficos, livros, artigos científicos e outros documentos relacionados ao tema proposto, como também foram utilizadas cartas topográficas, imagens de satélite e softwares livres para a elaboração de mapas, gráficos e análises. Dessa forma, foram analisados os aspectos relacionados aos sistemas geoambientais, a fim de auxiliar futuros planejamentos hidrográficos, como princípio para delinear uma gestão hídrica sustentável da microbacia. A partir do levantamento dos dados e elaboração do mapeamento geoambiental, foi possível verificar os impactos que vêm sofrendo o Rio Grajauzinho, como o avanço descontrolado da agropecuária, sobretudo da pecuária, atividade principal da região.
Transecto como ferramenta para percepção da geodiversidade no município de Serra do Navio, Amapá, Brasil
Authors: Nunes Adria , Marques Celina
Published: June 2024

As pesquisas desenvolvidas no ramo das Geociências cada vez mais buscam interpretar a geodiversidade e seus processos, assim como, captar novas ferramentas para sua popularização. Diante disso, o seguinte estudo visa discutir, preliminarmente, a percepção da geodiversidade através de um transecto considerando seus aspectos bióticos e abióticos em Serra do Navio. Para alcançar tais objetivos, realizou-se quatro etapas fundamentais: levantamento do referencial bibliográfico, vetorização de dados minerados do banco de dados do Instituto Brasileiro de Geografia e Estatística (IBGE), confecção do material cartográfico através dos programas “QGis” e “Google Earth Pro” e trabalho de pesquisa de campo. A partir desses procedimentos, foi possível interpretar a geodiversidade por meio dos aspectos bióticos e abióticos encontrados no local delimitado pelo transecto, onde foi possível evidenciar questões relacionadas a potencialidades desse ambiente, como a possibilidade de práticas geoturísticas e de geoconservação, além de contribuir com futuras pesquisas da seguinte temática para o contexto amapaense e amazônico.
Auras e atmosferas afetivas como desdobramentos das paisagens
Authors: Freitas Jéssica Soares de , Bernardes de Souza Jr Carlos Roberto
Published: June 2024

A paisagem, enquanto categoria de análise da geografia, possui diversas compreensões. Caminhando pela via das geografias culturais, o presente ensaio intenta compreender a paisagem por meio da aura, um dos principais conceitos de Walter Benjamin, e das atmosferas afetivas, amplamente discutidas nas teorias mais-que-representacionais anglófonas. Para tal, realizamos uma busca teórico-conceitual para tecer análises sobre a paisagem dentro dos conceitos adotados. Entende-se que o entrelace de auras dos sujeitos e objetos constroem a paisagem de maneira a construir atmosferas afetivas, as quais conectam diferentes relações espaço-temporais que reúnem corpos, emoções, sentidos e percepções. Nesse sentido, a paisagem formada por percepções intercorporificadas deve ser compreendida não apenas em sua concretude no material ou na subjetividade imaginativa, mas no emaranhado de significados que são provocados pelas suas conexões.
Estágio supervisionado em geografia a partir de contextos diferenciados de ensino
Authors: Pires Simão Mario , Corrêa Gabriel Siqueira
Published: June 2024

Neste artigo iremos apresentar a experiência de estágio supervisionado, tendo como foco as questões que envolvam a educação diferenciada, ou seja, práticas associadas a distintas territorialidades como educação do campo e indígena, a educação não formal; as iniciativas de práticas culturais, e as agendas contemporâneas que têm ganhado espaço na escola, como o debate de raça e gênero. Assim, tem-se como objetivo identificar a potencialidade do estágio supervisionado enquanto um lugar de formação política e geográfica, a partir de um debate sobre educação diferenciada. Nessa direção, iremos relatar as práticas e possibilidades desse campo, a partir das experiências obtidas durante a docência em estágio supervisionado IV, disciplina ofertada pelo curso de graduação de Geografia, ofertado na Universidade do Estado do Rio de Janeiro, na Faculdade de Formação de Professores, tendo como recorte temporal as práticas desenvolvidas entre 2014 e 2023.
Fresh and hardened characteristics of a novel alkali-activated geopolymer concrete with GGBFS
Authors: Prakash Ramaiah , Srividhya Sundaresan , Neelamegam Pitchaipillai , Mukilan Karuppasamy , Premkumar Rajagopal , Vinod Kumar Muthu
Published: June 2024

The development of a country's infrastructure relies heavily on the use of cement concrete as the major building material. The cement industry significantly contributes to global warming due to its substantial carbon dioxide (CO2) emissions. Reducing the consumption of cement in concrete while maintaining its essential features can lead to a more cost-effective and environmentally friendly advancement of the construction sector.
By looking at a new concrete mix that includes fly ash (FA) and Ground Granulated Blast Furnace Slag (GGBFS), this study aims to develop cement less concrete. An Alkali-Activated Solution (AAS) was used as the liquid binder along with a dry mix of FA and GGBFS. This study examines the utilization and impact of liquid and solid binders in the production of alkali-activated GGBFS-based Geopolymer Concrete (GPC), as well as the optimal quantities required for their incorporation. Various ratios of AAS to GSB were experimented with to determine the optimum mixture. To find optimum mixture of GGBFS for the GPC, different amounts of GGBFS were utlised as a Partial substitution for fly ash. At 28 days, test specimens, such as cubes, cylinders, and beams, were cast and put to the test. The GPC has also decided to use heat curing to get good results. It is found that the ratio 0.5 between AAS and GSB and a makeup of 75% GGBFS made the strongest material. The results of the study show that using AAS and GGBFS in geopolymer concrete makes a better product, which could be used in places where there is not enough water
Blend of low cost electrode material for energy storage device under DC glow discharge plasma exposed ESAC
Authors: K.A Vijayalakshmi , Fennila Judith , Maheswari K T
Published: June 2024

The waste biomass in the form of eucalyptus globulus seeds activated carbon, which is employed as the electrode material and is environmentally acceptable, provides the good specific capacitance in the current work which is used for the energy storage application. A sample carbonization and physical activation procedure was used to create the activated carbon from the eucalyptus seeds. As prepared activated carbon was exposed to a DC glow discharge plasma, which modifies the surface of the material without altering its core characteristics. The investigation of the activated carbon was done utilizing structural, morphological, and electrochemical techniques of both pure and plasma treated. The increasing intensity of the X-ray diffraction indicates the carbon's amorphous and disorderly character. More oxygen-containing functional groups are present, according to an FTIR analysis. The FESEM/EDAX investigation has demonstrated the less appearance and more graphitic porosity with random orientation. Moreover, the electrochemical investigations were examined for utilization of the material of Electrochemical Impedance Spectroscopy (EIS) and Galvanostatic charge-discharge (GCD) which has a specific capacitance of 150F/g for a 1.5mA/g current density. The results revealed that the activated carbon made from Eucalyptus seeds after plasma treatment has good surface characteristics, improved specific capacitance, and is a low-cost electrode material for fabrication of energy storage device.
Investigation of properties of epoxy coating on X80 steelunder cathodic polarization conditions
Authors: Nyrkova Lyudmila
Published: June 2024

The effect of cathodic polarization on the properties of the protective epoxy coating on X80 steel samples under cyclic changes in temperature from 20 to 75 оC over a period ~3.5 months was investigated. It is shown that in a 3% NaCl solution, with decreasing polarization potential from -1.05 to -0.85 V, the disbondment radius of the epoxy coating decreased by ~3.48 times (from 10.8 to 3.1 mm). At -0.75 V and in the absence of polarization, disbondment of the coating from the steel don’t observed. By potential -0.75 V coating retains its protective properties according to the transient specific electrical resistance indicator, and its aging is slowed down.
Synergistic effect of Fe and Co doped ZnO nanoparticles synthesized using Alpinia galanga against Candida parasilopsis
Authors: Narendhran S
Published: June 2024

In this investigation, nanoparticles such as ZnO, Fe doped ZnO and Co doped ZnO NPs prepared by the co-precipitation method were tested against the pathogenic yeast. The spectroscopic analyses were carried out to identify the morphological and chemical composition of the synthesized nanoparticles. The results of XRD analysis revealed that the synthesized nanoparticles were crystalline in nature with average size ranges between 32 – 34 nm approximately. EDX and SEM analysis were carried out to identify the element composition (Co, Fe and Zn) and spherical shape of nanoparticles. The functional group that is responsible for the capping and stability of nanoparticles was confirmed by FTIR analysis,  to compare the antifungal efficiency of ZnO, Fe doped ZnO and Co doped ZnO from the resultant zone of inhibition.
A novel Sr0.99Zr(PO4)2:0.01Eu3+ ceramic glass viable for long term energy storage applications
Authors: Thiruveni Natarajan , Ramu Muthammal , Prakash Babu Dhanapal , Ponkumar Sadasivam , Jayavell Ramasamy
Published: June 2024

This paper reports the first-time synthesis of Sr0.99Zr(PO4)2:0.01Eu3+ ceramic glass were synthesized via solution combustion using glycine as fuel (1:1 fuel-to-oxidizer ratio). X-ray diffraction confirmed the desired crystalline phase, while Scherrer analysis indicated an average particle size of approximately 60 nm. This was further supported by scanning electron microscopy, which revealed a particle size around 75 nm. Notably, the material exhibited a characteristic mesoporous structure, a signature feature of the solution combustion technique. Dielectric studies revealed a double exponential decay profile, signifying the presence of voids within the material. Importantly, the significantly smaller time constant (t2) compared to t1 highlights the material's suitability for long-term energy storage applications.
Electrochemical investigations of Ni-P/nano c-BN deposited on aluminum alloy
Authors: Aarudi Ranganath Shashikala , Kothakula Keerthi , Bangarpet Shankar Sridhar
Published: June 2024

Electrochemical investigations were carried out on the Ni-P/nano cubic-Boron Nitride (c-BN) coatings obtained by using sodium hypophosphite reduced electrolyte bath solution with complexing agents. The screening of complexing agents was carried out by UV-Visible spectrophotometric studies. The deposits obtained using optimized bath composition was tested by EDAX, SEM and XRD in order to understand the structural morphology of the coatings. Electrochemical studies conducted by Potentiodynamic polarization and Electrochemical Impedance Spectroscopy (EIS) reveled the greater stability of coatings in acidic and alkaline environment. To evaluate the behavior of the coatings in marine environment, Salt spray test was conducted using sodium chloride solution. Results indicate the improved resistance to corrosion with the incorporation of nano c-BN in the coatings.
Structural, microstructural, magnetic and dielectric properties of Fe2O3 modified CuO composite
Authors: Grewal Rajnish , Dahiya Sunita , Kumar Sunil , Kumar Naveen
Published: June 2024

1-xCuO-xFe2O3 composites where x = 0.05, 0.10, 0.15 and 0.20 have been synthesized using ball milling mixing method. The structural, microstructural, elemental analysis, magnetic and dielectric properties of prepared ceramic composites have been investigated using the advanced characterization techniques. The influence of sintering temperature on structural, dielectric and magnetic properties have been investigated. The structural phase analysis has been carried out using X-ray diffraction and effect of sintering temperature clearly depicted in graphs. As increase in sintering temperature from 700 °C to 900 °C, diffraction peaks shift towards higher angles, indicating changes in crystal lattice parameters and potential crystal structure distortions. However, after careful consideration of the XRD results and a comprehensive analysis, we concluded that a synthesis temperature of 700 °C is preferable. The SEM micrographs shows an increase in grain size of ceramic composites as concentration of Fe2O3 increases. The Energy Dispersive X-Ray spectroscopy affirms presence of elements according to stoichiometric proportion whereas S-shaped M vs. H. loop confirms presence of magnetic ordering. Variation of Real (ε') and Imaginary (ε") parts of dielectric permittivity with frequency shows general dielectric behavior.
Studies of structural and optical properties of sputtered SiC thin films
Authors: Mukesh Kumar Mukesh Kumar
Published: June 2024

The present study explored the deposition of amorphous silicon carbide (a-SiC) thin films on Si (100) and glass substrates using RF-magnetron sputtering. The sputtering power is changed from 100 to 250 W to study its influence on the characteristics of a-SiC thin films. Raman spectroscopy reveals the formation of a-SiC as well as carbon clusters. The film deposited at 100 W clearly shows the presence of both transverse optical (TO) and longitudinal optical (LO) phonon modes. The average roughness of the a-SiC films found to follow an increasing trend with increase in the sputtering power. The optical band gap of the a-SiC films measured by UV-Visible spectrophotometer was found to increase up to 2.45 eV with decrease in sputtering power. All a-SiC thin films were highly transparent. The Photoluminescence (PL) spectroscopy results were in agreement with the data observed by UV-Visible spectroscopy
Development and validation of RP-HPLC method for quantitative estimation of related substances in gatifloxacin drug substance
Authors: Sravanthi Alladi Devi , Bharath Ponnuri , Kiranmayi Peddi , Ramachandran Dittakavi
Published: June 2024

The analysis of improved RP-HPLC method for the separation and quantification of Gatifloxacin and its impurities are described. Samples are analysed by means of reverse phase (RP-HPLC) using an Zorbax Eclipse C18, 50 x 4.6 mm5µm and the mobile phase consists of two Channels A and B.Channel-A:0.1% Trifluoroacetic acid buffer   and Channel-B:Acetonitrile. The flow rate is 1.0 ml/min. The column temperature was maintained at 35°C and sample temperature was maintained at 25°C, injection volume 10µLand wavelength fixed at 220nm UV-detection. The developed LC method was validated with respect to specificity, precision, linearity, ruggedness and robustness. Validation study compared as per ICH guideline.
Electrochemical and theoretical evaluations of 3-(4-chlorophenyl)-7-methyl-5H-[1, 2, 4] triazolo [3,4-b][1,3,4]thiadiazin-6(7H)-one as corrosion inhibitor for copper in nitric acid environment
Authors: Fouda Abd El-Aziz S. , El-Hallag Ibrahim S. , El-Barbary Ahmed A. , El Salamony Fatma M.
Published: June 2024

3-(4-chlorophenyl)-7-methyl-5H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazin-6(7H)-one (CTT) was synthesized and evaluated as corrosion inhibitor for copper in one molar HNO3. The adsorption properties for the synthesized CTT were determined by experimental and theoretical methods in acid environment. The chemical method such as mass loss method (ML),  DC potentiodynamic polarization (PDP) and AC impedance (EIS) techniques were utilized to determine the inhibitive behavior of CTT. Outcome data obtained from these methods displayed that with increasing  the concentration of CTT its inhibition efficiencies (%IE) increases and reached 91.5% at 24x10-6 M , 25oC using EIS technique. The presence of CTT reduces the capacity of the double layer (Cdl) and improves the charge transfer resistance (Rct) in a solution of one molar nitric acid. CTT is a mixed-type inhibitor from the data obtained from the polarization curves. The attained data indicated that CTT was physically adsorbed onto the Cu surface in accordance for the Langmuir adsorption. The surface protection examination was carried out using scanning electron microscopy (SEM), Energy Dispersive X-ray (EDX) and atomic force microscope (AFM). Also, The quantum chemical parameters of CTT were computed and discussed. The results of several methods are in  agreement with each other.