bluuebunny/crossref_metadata_2025 huggingface dataset:
Recaudación por Medidas de Embargo y Regímenes Tributarios en Perú, 2007-2023
Authors: Cordero Campos Leví Alejandro
Published: February 2025

Objetivo: Determinar la relación entre la Recaudación por Medidas de Embargo y los Regímenes Tributarios en el Perú. Métodos: La investigación tiene un enfoque cuantitativo, no experimental, nivel correlacional y de corte transversal. Se utilizó información obtenida de la SUNAT del periodo comprendido entre el 2007 al 2023. Se utilizo el coeficiente de correlación de Pearson para ver la relación de las variables. Resultados: Del análisis de las variables Recaudación por Medidas de Embargo y Regímenes Tributarios muestran un p-valor (Rho de Pearson) menor a 0.05 por lo que se acepta la hipótesis alterna "Recaudación por Medidas de Embargo y Regímenes Tributarios están correlacionados", asimismo el nivel de correlación es de 0.934. Conclusión: Existe una relación positiva fuerte entre la Recaudación por Medidas de Embargo y los Regímenes Tributarios en el Perú, esto servirá a la Administración Tributaria para poder enfocarse en incrementar la inscripción de nuevos contribuyentes a cada uno de los Regímenes Tributarios con la finalidad de obtener una mayor Recaudación por medio de Medidas de Embargo.
Estrategias instruccionales para potenciar la comprensión lectora en estudiantes de 13 a 15 años de educación general básica
Authors: Cañar Yumbolema Darwin Danilo , Vega Acuña Marjory Azucena , Pilatasig Lasluisa Olga Mercedes , Canchignia Bonilla Esthela Liliana , Tenesaca Canchignia Diana Carolina
Published: February 2025

Este trabajo es un análisis riguroso sobre dos variables fundamentales: los procesos cognitivos, lingüísticos y metacognitivos asociados a la comprensión lectora y las estrategias instruccionales durante el proceso lector. La revisión bibliográfica que sustenta este trabajo explora aspectos fundamentales como los componentes de la comprensión lectora, los niveles, los procedimentales y las habilidades que se vinculan con los procesos perceptivos, comprensivos e interpretativos para leer textos comprensivamente. Además, se desarrolla una amplia conceptualización sobre el proceso lector visto desde el enfoque dinámico, que fusiona los modelos ascendente y descendente de lectura y determina momentos específicos: antes de la lectura, durante la lectura y después de la lectura. Por otro lado, las estrategias instruccionales, basadas en los planteamientos didácticos que engloban tres momentos de enseñanza-aprendizaje: moldeamiento, prácticas compartidas y actividades autónomas generan prácticas de aprendizaje que brindan el andamiaje apropiado para que el alumno sepa emplear de modo pertinente las estrategias instruccionales. También se incluye en este trabajo una exploración sistemática sobre las habilidades metacognitivas que guían el desarrollo de la comprensión lectora. Finalmente, diseñamos una propuesta didáctica que sustente y afiance el desarrollo de las habilidades de comprensión lectora. Con fines didácticos, en la propuesta incluimos los niveles de Bloom para que sean el baremo donde se pueda monitorear el desarrollo de las habilidades asociadas a la comprensión lectora.
Factores psicosociales de la ideación suicida en jóvenes en tiempos de pandemia Covid-19: Revisión narrativa
Authors: Ramírez Bengoa Roberto René , Godeau Rojas Jack Jairo
Published: February 2025

Antecedentes: Cada año se suicidan alrededor de 800 mil personas, cada 40 segundos muere una persona en el mundo, el suicidio es un problema de salud pública mundial, y la ideación suicida una variable en su dinámica. Objetivo: Reconocer los factores psicosociales de la ideación suicida en jóvenes en tiempos de pandemia Covid 19. Método: Revisión narrativa realizada con búsqueda en PUBMED, WEB OF SCIENCE y SCOPUS, incluyendo estudios en inglés y/o español, la estrategia de búsqueda se desarrolló con descriptores para ideación suicida y población joven, la búsqueda fue realizada por dos revisores, quienes organizaron los resultados de la búsqueda en Microsoft Excel. Resultados: Se encontró 10 estudios, con respecto a la frecuencia se identificaron indicadores de incremento (13,3±4,2), por semana durante la pandemia de COVID-19 frente a (12,2 ±3,9), en los dos años anteriores observados, la diferencia no fue significativa (p=0.12), comparados con períodos similares, y (4 de 10 estudios) utilizaron instrumentos para evaluar la ideación suicida, sin embargo existen pocos psicométricos para evaluar la ideación suicida, así mismo el factor predominante reconocido fue el psicológico. Conclusiones: con respecto a la frecuencia de la ideación suicida la diferencia no fue significativa comparados con períodos similares en tiempo pre y Covid 19, pero el factor psicológico: rumiación cognitiva tuvo mayor influencia para la ideación suicida, y predispone a la suicidabilidad, así mismo se reconoció la necesidad de construir y adaptar instrumentos adecuados para evaluar la ideación suicida en jóvenes de manera específica y oportuna por el alto perfil de riesgo en estos casos.
CONSTRAINTS ON GRAVITON MASS FROM S2-LIKE STAR ORBITS AROUND Sgr A*
Authors: Borka Jovanović V. , Borka D. , Jovanović P.
Published: February 2025

Here we present our achieved results on the bounding graviton mass by the observed orbits of bright stars around Sgr A*. We used available observations of the S-star orbits in our Galactic center. By comparison of these stellar orbits with their simulated orbits in Yukawa gravitational potential, we estimated the constraints on the parameters of this modified theory of massive gravity. Then, we connected one of these parameters with the Compton wavelength of the graviton and used it for estimation of the graviton mass. In that way we obtained a new method of determining the upper limit of graviton mass, completely independent from other methods published until now. The constraints on the Compton wavelength of the graviton and its mass, obtained using this method, were in a good agreement with the coresponding LIGO results.
GRAVITY-BASED STRUCTURAL ANALYSIS OF THE MOLECULAR CLOUDS PERSEUS AND ORION A
Authors: Mihaylov H. , Stanchev O. , V. Veltchev T.
Published: February 2025

This paper presents an analysis of the structural characteristics of the giant molecular clouds Perseus and Orion A using the gravity-based method G-virial applied to 13 CO(1-0) data cubes. The method utilizes a physical quantity called gravitational boundedness and through it defines gravitationally coherent regions. To define the gravitationally coherent regions we used the Dendrogram method. The results from our analysis reveal four things: the studied gravitationally coherent regions follow Larson-type relations, the gravitational boundedness rises towards the centers of these structures, cluster-forming regions generally have higher values of gravitational boundedness, and Orion A is characterized with higher values of gravitational boundedness than Perseus.
MULTI-BAND INTRA-NIGHT VARIABILITY OF THE BLAZAR CTA 102 DURING ITS 2016 DECEMBER OUTBURST
Authors: M. Mihov B. , S. Slavcheva-Mihova L.
Published: February 2025

During 2016 December the blazar CTA 102 underwent an unprecedented outburst thus becoming the brightest blazar observed up to date. We present some results from the intra-night monitoring of the blazar in the BV RI bands in three consecutive nights during the outburst.
THE UrbObsBel PROJECT: INSTRUMENTS AND DETECTORS
Authors: Pavlović R. , Cvetković Z. , Bjelajac D. , Damljanović G. , Lukić D. , Rovčanin B. , Samurović S. , Simić Z.
Published: February 2025

Urban Observatory of Belgrade (UrbObsBel) is a project hosted by Astronomical Observatory of Belgrade. Our main aim is to study, applying well-tested astronomical techniques, light pollution and dynamical processes of the Serbian capital, Belgrade. Our observations will provide valuable information on energy usage distribution that has a high impact on the environment and ecosystems. We have already mounted and we are also planning to mount several observational instruments covering spectral range from visible (400 nm) to infrared (13 micron), and use both broadband and hyperspectral imaging systems in our synoptic study. Apart from study of the urban dynamics we intend to use several instruments aimed at the study of sky brightness and various sources of sky pollution such as street lights. This would be achieved mounting identical instruments at Astronomical Observatory of Belgrade (AOB) and at our Astronomical Station at Vidojevica (ASV). Until now we have acquired the following equipment: Web and file server, TESS-W photometer, Unihedron Sky Quality Meter, Hyperspectral Imaging (HSI) devices, FLIR and AllSky Cameras.
Formulation of Turmeric-Tamarind Jelly Using Psyllium Husk
Authors: Yosua Lucky Chandra  , Esteria Priyanti
Published: February 2025

The objectives of this study were:  1) to determine the acceptance of color, aroma, texture, and taste of turmeric-tamarind jelly candy with the addition of psyllium husk; and 2) to identify the composition of the selected turmeric-tamarind jelly candy product. The research employed experimental methods, hedonic tests, and ranking tests. Three variants of psyllium husk were used: Product 1 with 1 g, Product 2 with 3 g, and Product 3 with 5 g of psyllium husk added.  Data obtained from sensory evaluations were descriptively analyzed using Microsoft Excel 2019. Results indicated that the turmeric-tamarind jelly candy with the addition of 1 g of psyllium husk was the most preferred and well-received product.   The composition of the selected jelly candy included 150 ml of turmeric-tamarind extract, 60 g of sugar, 60 g of glucose, 21 g of gelatin, and 1 g of psyllium husk.
Utilization Of Songket Fabric As A Wedding Dress With The Application Of Aesthetic Principles
Authors: Arina Haq  , Anita Shofiyunada
Published: February 2025

Songket fabric is one of the traditional fabrics originating from South Sumatra, songket fabric has been used as a subordinate of traditional clothing, it can be in the form of bodo clothes, tunics. The development of fashion that continues to rotate so that the preservation of this songket fabric is maintained, innovation is needed, to provide innovation so that songket fabric can be processed into fashion for wedding occasions with more modern models. The principle of aesthetics is a reference in creating innovations so that the results of innovation are in accordance with the intentions and goals. The problem is how to use songket fabric as a wedding dress by applying aesthetic principles. The purpose is to find out the use of songket fabric as a wedding dress by applying aesthetic principles. The data collection methods used are observation, documentation and literature. The data analysis used is qualitative data analysis. The manufacture of wedding dress using songket fabric and a combination of tulle fabric through the process of determining design, preparing tools and materials, taking measurements, making patterns, cutting materials, marking the patterns, sewing, pressing, and finishing. Unity lies in detail by detail is still continuous, balance lies in symmetrical balance and contrast is applied to the selection of materials in terms of texture and color. Wedding Dress clothing is as follows; using songket fabrics. The use of this songket fabric is a synthetic songket fabric, which is widely sold and the price is still affordable. There are different possibilities when using the original songket.
Análisis comparativo del consumo de tabaco y productos relacionados en adolescentes de un área de salud de Alicante frente a datos nacionales del ESTUDES 2023
Authors: Fernández González Estefanía , Rábade Castedo Carlos
Published: February 2025

Objetivo: Este estudio compara el consumo de tabaco y otros productos relacionados entre los adolescentes de un área de salud de Alicante con los datos nacionales del ESTUDES 2023. Se pretende identificar diferencias significativas en la prevalencia del consumo de tabaco, cigarrillos electrónicos y pipas de agua, así como en las tasas de intentos de dejar de fumar.

Material y métodos: Se realizó una encuesta en centros educativos de un área de salud de Alicante (El Campello) a jóvenes de 14 a 18 años. Los datos obtenidos se compararon directamente con los resultados del ESTUDES 2023, enfocándose en variables como el consumo de tabaco, cigarrillos electrónicos, pipas de agua y las tasas de intentos de dejar de fumar. Los resultados se analizaron para identificar discrepancias y patrones relevantes.

Resultados: Los resultados muestran que el consumo de tabaco en El Campello es significativamente menor que el promedio nacional (17% frente al 33,4% en alguna vez en la vida; 8% frente al 27,7% en los últimos 12 meses; y 8% frente al 21% en los últimos 30 días). La tasa de intentos de dejar de fumar es mayor en El Campello (50%) en comparación con la encuesta ESTUDES (40%). El consumo de cigarrillos electrónicos también es menor en El Campello (33% frente al 54,6%) y la proporción de jóvenes que usan cartuchos con nicotina es mayor (66% frente a menos del 50% en la encuesta ESTUDES). El uso de pipas de agua es considerablemente menor en El Campello (13% frente al 58% en la encuesta ESTUDES).

Conclusiones: El estudio indica que los adolescentes de El Campello presentan una menor prevalencia de consumo de tabaco y cigarrillos electrónicos en comparación con el promedio nacional. Sin embargo, muestran una mayor tendencia a intentar dejar de fumar. El menor uso de pipas de agua y el mayor consumo de cartuchos con nicotina sugieren diferencias en las preferencias y acceso a productos relacionados con el tabaco. Estos hallazgos pueden ofrecer perspectivas para desarrollar estrategias locales de prevención y tratamiento del consumo de tabaco.
Políticas laborales, reducción del tiempo de trabajo y estrategias de bienestar social en los países escandinavos
Authors:   Roskilde University Center, Dinamarca, Schmid Herman
Published: February 2025

El modelo tradicional escandinavo de relaciones laborales estaba orientado hacia el pleno empleo y mantenía un alto grado de control. Hoy en día Escandinavia presenta un desempleo masivo, lo que hace preciso desarrollar nuevas medidas. hasta el momento, Dinamarca ha tomado la delantera. El problema del paro juvenil ha sido afrontado con programas locales de activación, que tienden a ser institucionalizados como un mercado laboral protegido y alternativo. El problema del desempleo femenino se ha reducido en cierta medida a través de las denominadas reformas "permiso", es decir, programas de reducción de la jornada laboral y de reparto del trabajo, que han tenido bastante éxito en el sentido de que mucha gente se ha integrado en ellos. Sin embargo, existe una actitud ambivalente frente a las reformas laborales que cuestionan la lógica de los mercados autorregulados y que están en parte basadas en la racionalidad del "trabajo social". Se afirma que la moderna tecnología de la información y las relaciones laborales en los servicios enfatizan los aspectos cualitativos del trabajo, por lo que las políticas laborales deberían adaptarse a esta nueva situación.
THE PROBLEMS ARISING FOR ULTIMATE INVESTORS IN THE INTERMEDIATED HOLDING OF SECURITIES AND THE EVALUATION OF SOLUTIONS THAT DISTRIBUTED LEDGER TECHNOLOGY CAN OFFER TO THESE PROBLEMS
Authors: POLAT ÖZLEM ATA
Published: February 2025

Geleneksel olarak fiziki senetlere bağlanan menkul kıymetler daha sonra teknolojinin gelişmesi ve piyasa ihtiyaçlarının değişmesiyle birlikte merkezi saklama sistemiyle aracılı bir şekilde saklanmaya başlanmıştır. Geleneksel saklama
sisteminde söz konusu olan hak sahibi ile ihraççı arasındaki doğrudan bağlantı merkezi saklama sisteminde araya aracıların girmesi sebebiyle kesilmiştir. Merkezi saklama sisteminde, merkezi saklama kuruluşu nezdinde hak sahibi
bazında izlenmeyen havuz hesaplar açılması yoluyla oluşan toplu ve misli saklama yöntemi, hak sahiplerinin menkul kıymetlerinden kaynaklanan haklarını kullanırken ihraççıya karşı kendilerinin mi yoksa aracı zincirinin en tepesinde
olan aracının mı yasal hakka sahip olduğu noktasında sorunlara sebep olmaktadır. Bu nedenle özellikle milletlerarası sermaye piyasası işlemlerinde yabancı yatırımcıların kurumsal yönetime katılımları düşmektedir. Günümüzde ise
teknolojinin gelişmesiyle birlikte menkul kıymetlerin dağıtık defter teknolojisi vasıtasıyla saklanması gündemdedir. Dağıtık defter teknolojisinin özellikleri nedeniyle bu yöntemde hak sahibi ile ihraççı arasında tıpkı geleneksel
saklama yönteminde olduğu gibi yeniden doğrudan sahiplik sistemi söz konusu olmaktadır. Çalışmamızda menkul kıymetlerin dağıtık defter teknolojisiyle saklanmasının merkezi saklama sisteminin ortaya çıkardığı sorunlara çözüm getirip
getirmeyeceği incelenmektedir.
FABP1 as an Early Marker of Diabetic Nephropathy in Type 2 Diabetic Patients
Authors: Mahmoud Mona Mustafa Kamal , Mohamed Mohamed Momtaz , Shaker Olfat Gamil , Elsheimy Hend Abdallah , Samir Hussein Hassan
Published: February 2025

Background: The prevalence of diabetes mellitus, a worldwide burden, is expected to affect more than 350 million people by 2035, About one-third of diabetic patients have microalbuminuria after 15 years of disease duration, and nearly half of them develop real kidney disease, Early detection and intervention are essential in the prevention and treatment of diabetic nephropathy (DN). LFABP( u-LFABP) has been demonstrated to be a marker of tubular damage., Several studies have shown that u-LFABP could be a useful marker for the detection of early stage of DN. Aim: Assess if FABP1 is an early marker of diabetic nephropathy in type 2 diabetic patients. Methods: This is a cross sectional study 120 diabetic patients (40 with norm albuminuria, 40 micro albuminuria and 40 macroalbuminuric was conducted at El-Kasr Aini Cairo University Hospital. The patients were recruited from the outpatient clinics of endocrinology and internal medicine. Detailed medical history, complete physical examination for type II diabetic patients aged (35-65) years old., Laboratory investigations including Fasting blood glucose, blood urea, serum creatinine, HbA1c and lipid profile for all participants. Estimated GFR will be measured by Modification of Diet in Renal Disease (MDRD) equation, The relation between morning spot urine sample ACR and urinary FABP1 will be studied, also FABP1 urinary was correlated to (eGFR, HbA1c, lipid profile). Results: Urinary L-FABP1 levels were elevated in the microalbuminuric and macroalbuminuric groups compared to the normoalbuminuric group, but this difference was not statistically significant. The highest concentration was noted in the microalbuminuric group.Conclusion: urinary L-FABP1 may serve as a marker of tubular damage in diabetic nephropathy. However, its predictive and diagnostic value remains uncertain due to the lack of statistically significant differences observed in our study.. Larger-scale studies with longer follow-up periods may help clarify whether urinary L-FABP1 can be a reliable biomarker for DN progression in diabetic patients.
A COMPARATIVE EVALUATION OF SOME MACHINE LEARNING TECHNIQUES FOR PREDICTING BREAST CANCER
Authors: ISHOLA O. B  , HAMMAWA M. B  , OGWUELEKA F.N  , OWOLABI O.
Published: February 2025

With over 2 million new cases in 2020, breast cancer (BC) is the most common cancer diagnosed in women worldwide. Breast cancer is becoming more common every year, so early identification and diagnosis are crucial for reducing mortality rate. Machine learning algorithms can uncover hidden patterns and insights by analyzing massive datasets, enabling scientists to make data-driven decisions and more successfully address health concerns. In this paper, a performance comparison between four supervised machine learning techniques, namely Decision tree (DT), K-nearest neighbors (KNN), Extreme gradient Boost (XGB) and logistic regression (LR) is conducted. The primary objective is to evaluate the performance in classifying data with respect to efficiency and effectiveness of each algorithm in terms of classification test accuracy, precision, and recall. XGB outperformed the other algorithms in all the metrics used for evaluation.
DERECHO CONSTITUCIONAL EN EL CONTEXTO DE ENERGÍAS RENOVABLES: UN ENFOQUE EN BOLIVIA
Authors: Quiroga Rivera Walter Antonio
Published: February 2025

El trabajo de investigación profundiza en los aspectos fundamentales del derecho constitucional en el contexto de la implementación de energías renovables en Bolivia. Se examinan detenidamente las garantías constitucionales que respaldan el desarrollo y la promoción de fuentes de energías limpias y sostenibles, así como los derechos y responsabilidades tanto del Estado como de los ciudadanos en este proceso. En primer lugar, se aborda la protección constitucional de los recursos naturales y del medio ambiente, reconociendo la importancia de preservarlos para las generaciones futuras. Se analizan las disposiciones constitucionales que establecen el deber del Estado de promover el desarrollo sostenible y la protección del medio ambiente, lo que incluye la incentivación de la utilización de energías renovables. Asimismo, se examinan las implicaciones legales de la transición hacia un modelo energético más sostenible y las medidas que el Estado debe adoptar para garantizar un marco regulatorio adecuado que fomente la inversión y la innovación en el sector de las energías renovables. Se discuten también los derechos de los ciudadanos a acceder a energía limpia y a un medio ambiente saludable, así como las responsabilidades del Estado en garantizar este acceso de manera equitativa y sostenible. Por otro lado, se exploran los desafíos legales que enfrenta Bolivia en la implementación efectiva de políticas energéticas basadas en fuentes renovables, incluyendo aspectos como la infraestructura, la financiación y la coordinación interinstitucional. Finalmente, se destacan las oportunidades que ofrece la Constitución Política del Estado para impulsar la transición hacia un sistema energético más diversificado y sostenible, promoviendo la participación ciudadana, la innovación tecnológica y la cooperación internacional en el ámbito de las energías renovables
Hubungan Usia Ibu Dan Jarak Kehamilan Dengan Kejadian Abortus Di Rs. Tk II Pelamonia Makassar Tahun 2024
Authors: Israwati  , Subriani St
Published: February 2025

Latar belakang: Abortus merupakan suatu proses berakhirnya suatu kehamilan dimana janin belum mampu hidup di luar rahim (dengan kriteria kehamilan < 22 minggu atau berat janin. Tujuan penelitian: Untuk mengetahui Hubungan Usia Ibu dan Jarak Kehamilan dengan Kejadian Abortus Di RS TK II Pelamonia Makassar Tahun 2025. Metode: yang digunakan pada penelitian ini adalah metode observasi analitik dengan pendekatan kuantitatif. Desain penelitian yang digunakan adalah cross-sectional. Teknik sampling yang digunakan yaitu total sampling dengan jumlah populasi 127. Uji statistik yang digunakan uji chi-square dengan tingkat kepercayaan 95%. Hasil penelitian: menunjukkan ada hubungan yang signifikan antara Usia Ibu dan Jarak Kehamilan dengan kejadian Abortus dengan nilai p (0,002). Kesimpulan: Terdapat Hubungan Usia Ibu dan Jarak Kehamilan dengan Kejadian Abortus Di RS TK II Pelamonia Makassar Tahun 2025.
Literature Review of Fixed Asset Intensity on Tax Aggressiveness
Authors: Feni Moi
Published: February 2025

This study aims to examine the effect of fixed asset intensity on tax aggressiveness. Tax has become one of the problems that are widely handled in a country. One of the state revenues comes from taxes, without society there would be no taxes. Tax can be interpreted as a collection made by the government with the aim of realising a prosperous society. The independent variable in this study is fixed asset intensity, while the dependent variable is tax aggressiveness. The results showed that the fixed asset intensity variable did not all have a significant positive effect on tax aggressiveness.
Effectiveness of Tele Audiology Services in Hearing Aid Fittings: A Questionnaire Based Study
Authors: - Anant Arun , - Mangal Chandra Yadav
Published: February 2025

Introduction: The rise of tele audiology services has revolutionized the field of audiology, offering new possibilities for delivering hearing healthcare remotely. This study aimed to investigate the effectiveness of tele audiology services in the context of hearing aid fittings through a comprehensive questionnaire-based study. Aim: To evaluate the satisfaction levels and outcomes of individuals who underwent hearing aid fittings via tele audiology services as compared to traditional in-person fittings. Additionally, the study sought to identify the advantages and disadvantages perceived by participants in receiving tele audiology services for hearing aid fittings. Method: A total of 300 participants were enrolled in the study, with half undergoing hearing aid fittings remotely through tele audiology services and the other half through conventional in-person fittings. Participants completed a structured questionnaire that assessed various aspects of the fitting process, including satisfaction levels, communication effectiveness, and overall outcomes. Results: The results revealed that participants who received tele audiology services for hearing aid fittings reported comparable levels of satisfaction and outcomes to those who underwent in-person fittings. Notably, participants in the tele audiology group emphasized the convenience and time efficiency of remote services, while some expressed concerns regarding the lack of face-to-face interaction and personalized care. Discussion: The study provides valuable insights into the effectiveness of tele audiology services in the realm of hearing aid fittings. While tele audiology services demonstrate promising outcomes in terms of satisfaction and efficacy, further research is warranted to address issues related to individualized care and communication in remote settings. Conclusion: The study contributes to the ongoing discourse on the integration of tele audiology services in audiological practice, highlighting both benefits and areas for improvement in the delivery of hearing healthcare services.
A Review of the Durability and Performance Assessment of Pavement Quality Concrete (PQC) Using Mineral Admixtures
Authors: - Kiran K Shinde , - Bajirao V. Mane
Published: February 2025

This review examines the current state of knowledge regarding the performance and durability characteristics of Pavement Quality Concrete (PQC) incorporating mineral admixtures. With increasing emphasis on sustainable construction practices and the need for durable pavements, mineral admixtures have emerged as crucial components in modern concrete technology. This paper synthesizes recent research findings on various mineral admixtures' effects on PQC properties, evaluation methodologies, and long-term performance implications.
A Review on -Valerian Plant
Authors: - Ishvari M Gadgil , - Gayatri N. Dhable , - Rutuja S. Deshmukh , - Nayan S. Sawant , - Harshal M. Indaniya
Published: February 2025

Valeriana officinalis, commonly known as Valerian, is a perennial flowering plant that has been used for centuries in traditional medicine for its sedative and anxiolytic properties. This comprehensive study aims to explore the botanical characteristics, geographical distribution, traditional uses, chemical constituents, pharmacological activities, health benefits, recommended dosages, and potential side effects of the Valerian plant. Through a detailed examination of both historical and contemporary research, this study provides an in-depth understanding of the therapeutic potential and applications of Valerian.
The Valerian plant, native to Europe and parts of Asia, is distinguished by its fern-like leaves, small pink or white flowers, and a distinctive, somewhat pungent odor. It thrives in temperate
climates, often found in moist, marshy environments. Historically, Valerian has been utilized
across various cultures, including ancient Greece and Rome, where it was revered for its calming
effects and ability to treat insomnia, anxiety, and nervous disorders. Its use extends to traditional
Chinese medicine and European folklore, where it was often incorporated into medicinal
preparations and protective charms.
The pharmacological efficacy of Valerian is primarily attributed to its rich chemical
composition. Key constituents include volatile oils, valepotriates, and sesquiterpenes, with
valerenic acid identified as a major active compound. These components are believed to work
synergistically to enhance GABAergic neurotransmission, thereby exerting sedative and
anxiolytic effects on the central nervous system. Contemporary pharmacological studies have
confirmed Valerian’s ability to promote relaxation, improve sleep quality, and alleviate
symptoms of anxiety.
Beyond its well-known use as a sleep aid, Valerian has shown promise in a variety of other
health applications. Research suggests potential benefits in the management of menopausal
symptoms, gastrointestinal disorders, and chronic pain conditions. The antioxidant and anti
inflammatory properties of Valerian further contribute to its therapeutic versatility. Standardized
extracts and tinctures of Valerian are commonly used, with recommended dosages typically
ranging from 300 to 900 milligrams per day, depending on the intended use and individual
factors.
An Overview on Industrial Waste Water Submersible Pump
Authors: - Sujitsinh D Patil , - Manoj M Jadhav
Published: February 2025

Submersible pumps are essential equipment used in many different industries to move fluids, especially in drainage systems, wastewater treatment, and deep hole applications. With the motor and pump housing completely submerged, these pumps are made to function underwater. Submersible pumps' primary benefitis their capacity to move fluids that contain particles and waste, which makes them perfect for transporting sludge, slurry, and sewage. The construction usually has a hermetically sealed motor to keepout water and is frequently made with a pump impeller that works well in submerged environments.
Energy efficiency, compact designs, and adaptability to a variety of uses, including deep well pumping, flood control, and irrigation, are the hallmarks of submersible pumps. The varieties of submersible pumps, as well as their components, benefits, and operating principles, are examined
in this research. It also covers their effectiveness, drawbacks, upkeep needs, and the newest technological developments—like sensor integration and automated systems—that are meant to boost dependability and performance in demanding settings. The study also emphasizes how crucial appropriate installation and selection are to optimum longevity and performance.
Enhancing Thermal Resilience of Epoxy/VinylesterMWCNT Nanocomposites
Authors: Rekha  , Syed Javed Ali
Published: February 2025

The thermal resilience of composite materials is critical for applications in extreme environments, where stability under high temperatures and oxidative conditions is paramount. This research explores improving the thermal stability and resistance to heatinduced oxidative degradation in epoxy/vinylester matrix composites by reinforcing them with multi-walled carbon nanotubes (MWCNTs). Adding MWCNTs to the polymer matrix notably enhances the nanocomposites' thermal characteristics, such as their degradation temperature and resistance to oxidation. To assess the thermal stability and degradation patterns of these composites under accelerated aging, various experimental methods, including thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC), were utilized. Results indicate that MWCNTs act as effective reinforcing agents by promoting a more stable crosslinked structure, enhancing the material’s ability to resist oxidative degradation at elevated temperatures. The study also examines the effect of different MWCNT loadings on the thermal properties, providing insight into the optimal reinforcement concentration for maximum performance. The findings demonstrate that the epoxy/vinylester-MWCNT nanocomposites offer a promising approach to improving the thermal resilience of polymeric materials for high-performance applications in industries such as aerospace, automotive, and electronics.
Passion in Sport Management Research: Looking Back to Move Ahead
Authors: Qi Jiayao , Magnusen Marshall , Todd Samuel
Published: February 2025

As a nearly “abused” term, passion is pervasive and distinctive concept in the sport industry. However, research about passion has often been limited to mainstream frameworks such as the dualistic model of passion, which was originally developed among sport participants (e.g., athletes) with survey-based research methods. Though helpful, this has created a gap between what the current literature offers and what is needed from contemporary passion research in sport management. Notably, more attention needs to be given to both sport job seekers and sport employees. Accordingly, in this piece, we look back on passion, covering its history, key theories, and relevant sport management studies in order to move ahead with an argument for greater exploration of work passion and how it can advance the study of passion in the professional realm of sport business.
NIR-I retinal oximetry guided by optical coherence tomography angiography
Authors: GAO Mengqin  , ZHANG Huiying  , SUN Bin  , LIU Kaiyuan  , DU Chixin  , LI Peng  ,   1 College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China;,   2 Intelligent Optics & Photonics Research Center, Jiaxing Research Institute, Zhejiang University, Jiaxing 314000, China;,   3 Department of Ophthalmology, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310003, China
Published: February 2025

Accurate measurement of retinal blood oxygen saturation (SO2) offers valuable early insights into the pathophysiology of ocular diseases like diabetic retinopathy, glaucoma, and retinal vein occlusion. Visible-light optical coherence tomography (OCT) can measure SO2 directly through spectral fitting, yet its application is restricted due to the irritative nature of visible light and its influence on retinal physiological states. Near-infrared band 1 (NIR-I) causes less ocular stimulation. Even though the hemoglobin absorption effects are weaker in this region, its scattering properties are also related to SO2. Based on this principle, we propose a novel optical coherence tomography (OCTA) guided NIR-I technique for retinal blood oxygen saturation measurement. This method calculates SO2 by calibrating the optical density ratio (ODR) of oxygen-sensitive (855 nm) and isosbestic (805 nm) wavelengths. By leveraging the 3D blood flow maps generated by OCTA, the technique can automatically identify retinal vessels and surrounding tissue regions, thus minimizing errors caused by manual selection. Consequently, the classification accuracy of arteries and veins has surged from 82.1% to 96.7%. The calibrated average retinal blood oxygen saturation was 94%±21% for arteries and 56%±13% for veins, which aligns with normal physiological ranges. The representative result of artery-vein classification is presented in the figure below. This method greatly improves the accuracy and efficiency of measurement. It provides a reliable tool for the early diagnosis, disease evaluation, and treatment monitoring of ophthalmic diseases, holding great promise for future applications.
Research on the Characteristics of Reflective Liquid Crystal Polarization Holographic Cylindrical Lenses
Authors: Ma Chen-Wen  , Chen Fang-Fang  , Zhen Ji-Hong  ,   School of Optical-Electrical and Computer Engineering, Shanghai Key Laboratory of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093
Published: February 2025

Photo-oriented liquid crystal technology utilizes polarized light illumination to achieve the directional alignment of liquid crystal molecules. This technology can be developed into polarization volume gratings (PVG), which possess polarization and volume holographic selectivity characteristics. It also has a broad application prospect as an optical coupling element in optical waveguides and for pupil expansion output. This paper reports on the fabrication of a liquid crystal polarization volume holographic cylindrical lens (PVLS) with a beam diameter of 2cm using photo-oriented technology combined with a polarization off-axis holographic optical path. During the experiment, the exposure angle can be controlled to achieve the desired grating period variation range, enabling the diffraction angles of red, green, and blue (RGB) light incident on different grating periods to be the same. The experimental results show that within the grating period variation range of 1721.2 nm to 5346.5 nm, when RGB light is incident on grating periods of 3147 nm, 2649.1 nm, and 2275.6 nm respectively, the measured diffraction angles are all 11.59°, with an error between the actual and theoretical diffraction angles within ±0.5°; under 532nm right-handed circularly polarized light, the diffraction efficiency for 18 normal incidence reaches 90.6%, and the diffraction efficiency for oblique incidence satisfying the Bragg condition is 84.4%; simultaneously, beam expansion in one-dimensional direction is achieved, preliminarily verifying the feasibility of PVLS application in the field of color waveguides.
Global Fitting-Based Imaging Shift Monitoring Method for Doppler asymmetric spatial heterodyne interferometer
Authors: Wen Zhen-qing  , Li Juan  , Hao Xiong-bo  , Chang Chen-guang  , Li Hong-bo  , Zuo Hao-pu  , Fu Di  , Feng Yu-Tao  ,   1 Key Laboratory of Spectral Imaging Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China;,   2 University of Chinese Academy of Sciences, Beijing 100049, China
Published: February 2025

Accurate atmospheric wind field measurements are critical for understanding global climate dynamics and facilitating space exploration. Doppler Asymmetric Spatial Heterodyne Interferometers (DASH) measure atmospheric wind speed by detecting the phase changes in interferograms induced by Doppler shifts of airglow emission lines. However, environmental temperature fluctuations and mechanical vibrations often cause imaging plane shifts, introducing phase deviations that degrade measurement accuracy. In this study, we propose a novel global fitting-based imaging shift monitoring method. By etching periodic notches on the diffraction grating surface, the method models and fits the notch patterns formed on the detector plane to achieve precise imaging shift detection and correction. The optimization of notch signal modeling significantly reduces the number of fitting parameters, improving computational efficiency and detection precision. Through extensive simulations, we analyze the impact of SNR and model parameter variations on detection accuracy. Results indicate that when the SNR exceeds 11, the detection uncertainty remains below 6.5 nm. Sensitivity analysis reveals that the detection error stays within acceptable limits when the notch number and notch width variation are controlled within 40% and 0.7%, respectively, while the edge smoothness parameter of notch pattern has negligible influence. To validate the method’s performance, a thermal stability test using a near-infrared DASH prototype was conducted. The experimental results demonstrate a strong correlation between interferogram phase shifts, imaging plane shifts, and environmental temperature variations. After applying the proposed correction method, local phase fluctuations in the interferogram are significantly reduced, improving phase stability. Further, artificially applied imaging shifts were accurately detected with errors consistently below 9.96 nm, confirming the method’s reliability and precision. In conclusion, the proposed method effectively detects and corrects imaging plane shifts caused by temperature variations, enhancing interferogram phase stability and ensuring high-precision wind speed measurements. This approach offers a robust and computationally efficient solution for mitigating imaging shifts in DASH systems, with significant potential for atmospheric wind field measurement and space-based observational applications.
Room-temperature photoluminescence in GaAsSb nanowires under high-pressure
Authors: YIN Xuetong , LIAO Dunyuan , PAN Dong , WANG Peng , LIU Bingbing ,   State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China,   State Key Laboratory of Semiconductor Physics and Chip Technologies, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
Published: February 2025

Ternary GaAsSb nanowires (NWs) have considerable potential applications in infrared optical nanodevices due to their direct bandgap and wavelength-tunable light emission which covers the range from 870 nm to 1700 nm by changing the content of Sb in GaAsSb NWs. Due to the high surface state density, the light emission efficiency of GaAsSb NWs is quite low and the light emission is difficult to observe under room-temperature conditions. Previous studies on the optical properties of GaAsSb NWs were mainly carried out under low-temperature conditions, thereby limiting their room-temperature optical properties modulation research and room-temperature applications. In the present study, we modulate the optical properties of GaAsSb NWs under room-temperature conditions through the high-pressure strategy, by means of both photoluminescence (PL) and Raman spectroscopy. With the increase of pressure, the PL intensity of GaAsSb NWs is obviously enhanced at room temperature and the PL peak position shows a blue-shifted trend. With the change of wavelength (473 nm, 514 nm, and 633 nm) of the incident laser, the excitation-wavelength-dependent PL can be observed in GaAsSb NWs. The laser with a longer wavelength (633 nm) will excite the stronger light emission. The Raman spectra of GaAsSb NWs excited by different lasers (473 nm, 514 nm, and 633 nm) all show blue shift under compression. We selecte four pressure points (0.7 GPa, 1.2 GPa, 1.8 GPa, and 2.5 GPa) for the detailed comparison between the Raman spectra excited by different lasers. Under the excitation of 473 nm laser, the Raman peaks of GaAsSb NWs show an evident red-shift compared with those excited by 514 nm or 633 nm laser, which reveals the existence of temperature difference. The estimated relative temperature difference in GaAsSb NWs induced by two different lasers (473 nm and 633 nm) can reach up to 200 K. The laser with shorter wavelength will induce a stronger heating effect in GaAsSb NWs and reduce the light-emission efficiency. Under high-pressure condition, the charge transfer between the surface of GaAsSb NWs and pressure transmitting medium can be enhanced, which resulting in the reduction of surface state density and laser-heating effect. Therefore, the high-pressure strategy provides an efficient route for suppressing the high surface state density and optimizing optical properties of semiconductor nanostructures.
De novo identification of universal cell mechanics gene signatures
Authors: Urbanska Marta , Ge Yan , Winzi Maria , Abuhattum Shada , Ali Syed Shafat , Herbig Maik , Kräter Martin , Toepfner Nicole , Durgan Joanne , Florey Oliver , Dori Martina , Calegari Federico , Lolo Fidel-Nicolás , Ángel del Pozo Miguel , Taubenberger Anna , Cannistraci Carlo Vittorio , Guck Jochen
Published: February 2025

Cell mechanical properties determine many physiological functions, such as cell fate specification, migration, or circulation through vasculature. Identifying factors that govern the mechanical properties is therefore a subject of great interest. Here, we present a mechanomics approach for establishing links between single-cell mechanical phenotype changes and the genes involved in driving them. We combine mechanical characterization of cells across a variety of mouse and human systems with machine learning-based discriminative network analysis of associated transcriptomic profiles to infer a conserved network module of five genes with putative roles in cell mechanics regulation. We validate in silico that the identified gene markers are universal, trustworthy, and specific to the mechanical phenotype across the studied mouse and human systems, and demonstrate experimentally that a selected target, CAV1, changes the mechanical phenotype of cells accordingly when silenced or overexpressed. Our data-driven approach paves the way toward engineering cell mechanical properties on demand to explore their impact on physiological and pathological cell functions.
Maintenance of cell wall remodeling and vesicle production are connected in Mycobacterium tuberculosis
Authors: Salgueiro-Toledo Vivian C , Bertol Jorge , Gutierrez Claude , Serrano-Mestre Jose L , Ferrer-Luzon Noelia , Vázquez-Iniesta Lucia , Palacios Ainhoa , Pasquina-Lemonche Laia , Espaillat Akbar , Lerma Laura , Weinrick Brian , Lavin Jose L , Elortza Felix , Azkargorta Mikel , Prieto Alicia , Buendía-Nacarino Pilar , Luque-García Jose L , Neyrolles Olivier , Cava Felipe , Hobbs Jamie K , Sanz Joaquín , Prados-Rosales Rafael
Published: February 2025

Pathogenic and nonpathogenic mycobacteria secrete extracellular vesicles (EVs) under various conditions. EVs produced by Mycobacterium tuberculosis (Mtb) have raised significant interest for their potential in cell communication, nutrient acquisition, and immune evasion. However, the relevance of vesicle secretion during tuberculosis infection remains unknown due to the limited understanding of mycobacterial vesicle biogenesis. We have previously shown that a transposon mutant in the LCP-related gene virR (virRmut) manifested a strong attenuated phenotype during experimental macrophage and murine infections, concomitant to enhanced vesicle release. In this study, we aimed to understand the role of VirR in the vesicle production process in Mtb. We employ genetic, transcriptional, proteomics, ultrastructural, and biochemical methods to investigate the underlying processes explaining the enhanced vesiculogenesis phenomenon observed in the virRmut. Our results establish that VirR is critical to sustain proper cell permeability via regulation of cell envelope remodeling possibly through the interaction with similar cell envelope proteins, which control the link between peptidoglycan and arabinogalactan. These findings advance our understanding of mycobacterial extracellular vesicle biogenesis and suggest that these set of proteins could be attractive targets for therapeutic intervention.