Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Discipline
Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 48841 - 48870 of 1821542

Full-Text Articles in Entire DC Network

Quality Evaluation Of Ecological Experience Resources And Optimization Of Resource Management Policies In National Parks: Taking The Laohegou Area Of Giant Panda National Park As An Example, Baorong Huang Dec 2025

Quality Evaluation Of Ecological Experience Resources And Optimization Of Resource Management Policies In National Parks: Taking The Laohegou Area Of Giant Panda National Park As An Example, Baorong Huang

Double Helix Methodology

National parks are the core carriers for implementing the concept of “ecological protection first, public welfare for all”. This study used the fuzzy comprehensive evaluation method to evaluate the ecological experience resource quality of the Laohegou area in Giant Panda National Park of China. Based on the standardized psychological assessment scale and the Kessler Psychological Distress Scale, we have established an evaluation model for the psychological health benefits, quantifying the psychological health benefits of tourists in the ecological experience of national parks. At the same time, the relationship between the demographic characteristics, ecological experience characteristics, psychological health level, and psychological …

Go to article

Economic Resilience As A Mediator: Assessing The Impact Of China’S Grazing Withdrawal Project On Herders’ Well-Being In The Yellow River Source Region, Lihua Zhou Dec 2025

Economic Resilience As A Mediator: Assessing The Impact Of China’S Grazing Withdrawal Project On Herders’ Well-Being In The Yellow River Source Region, Lihua Zhou

Double Helix Methodology

Investigating how China’s most extensive grassland conservation program, the Grazing Withdrawal Project, impacts herders’ resilience and welfare levels is crucial for promoting sustainable grassland protection and enabling herders to withstand external shocks. However, few empirical studies have linked policy measures, economic resilience, and subjective well-being. Based on 266 questionnaires from the Yellow River Source Region, we constructed an indicator system for evaluating economic resilience and employed multiple linear regression to explore the key variables affecting herders’ economic resilience and subjective well-being under the context of the project and to clarify the mediating effect of resilience in translating government interventions into …

Go to article

Toward An Orderly And Efficient Post-Disaster Humanitarian Material Donation System: A Case Study Of The ‘9·5’ Luding Earthquake, An Chen Dec 2025

Toward An Orderly And Efficient Post-Disaster Humanitarian Material Donation System: A Case Study Of The ‘9·5’ Luding Earthquake, An Chen

Double Helix Methodology

Purpose – This study aims to assess the orderliness of the humanitarian material donation system (HMDS) following the 2022 “9·5” Luding Earthquake in China, providing insights into improving disaster relief efficiency and promoting postdisaster recovery. Design/methodology/approach – The orderliness of the HMDS is evaluated across three dimensions: donation input, donation output and donation environment. Correlation entropy and running entropy models are used to assess the system’s dynamics and to compare the performance of four donor types: government, enterprises, organizations and individuals. Findings – The early emergency phase (the first 12 days after the earthquake) is characterized by disorder and repeated …

Go to article

Mechanical And Durability Properties Of Cement Panels Reinforced With Hybrid And Pva Fibers, Shukran H. Faraj, Mohammed J. Kadhim Dec 2025

Mechanical And Durability Properties Of Cement Panels Reinforced With Hybrid And Pva Fibers, Shukran H. Faraj, Mohammed J. Kadhim

Al-Esraa University College Journal for Engineering Sciences

This study examines the synergistic effects of hybrid fibers (HF) and polyvinyl alcohol (PVA) fibers on the structural and thermal properties of silica-fume cement panels. Scanning electron microscopy (SEM) was employed to examine mortar mixtures with varying fiber content to assess their enhancement of microstructure. We conducted several experiments on compressive, flexural, and splitting tensile strength, in addition to water absorption and thermal conductivity. The results indicate that 1% HF exhibits superior mechanical qualities, with a compressive strength of 46.89 MPa, a flexural strength of 8.56 MPa, and a reduced thermal conductivity of 0.83 W/m•K. PVA fibers at 2% enhance …

Go to article

Analysis Of Penis Size Differences In Patients With Severe Erectile Dysfunction Non-Responsive Pde5i With Mesenchymal Stem Cell Secretome From Umbilical Cord, Kristophorus Jonathan Wibowo, Reny I’Tishom, Mohammad Ayodhia Soebadi, Muhammad Hidayat Surya Atmaja, Supardi Supardi, Ria Margiana, Fatkhurrohmah Leo Amalia Dec 2025

Analysis Of Penis Size Differences In Patients With Severe Erectile Dysfunction Non-Responsive Pde5i With Mesenchymal Stem Cell Secretome From Umbilical Cord, Kristophorus Jonathan Wibowo, Reny I’Tishom, Mohammad Ayodhia Soebadi, Muhammad Hidayat Surya Atmaja, Supardi Supardi, Ria Margiana, Fatkhurrohmah Leo Amalia

Folia Medica Indonesiana

The ineffectiveness of PDE5i[-10pc]AU: Please provide the affiliation of all authors. therapy is indicated by the patient’s unresponsiveness to oral medication, evidenced by insufficient erection after four attempts with the dosage recommended by the manufacturer. Consequently, the application of regenerative therapy may be seen as an effort to stimulate a response or improvement in erectile function, especially in individuals with erectile dysfunction who exhibit no significant progress after utilizing PDE5 inhibitors. Regenerative therapy seeks to repair damaged erectile tissue, with the objective of enhancing erectile function and rehabilitating tissue impacted by existing comorbidities. The secretome denotes the aggregate of chemical …

Go to article

Comparison Of Intraperitoneal And Intraductal Routes In The Growth Of N-Methyl-N-Nitrosourea-Induced Breast Cancer In Sprague Dawley Rats: A Systematic Review 2014–2024, Adilla Soraya Prameswari, Ruendhita Azzahra Sari Sompokan, Annisa Annisa, Rachma Greta Perdana Putri, Dewi Yuniasih, Muhamad Danian, Muhammad Tri Yoga Tianotak Dec 2025

Comparison Of Intraperitoneal And Intraductal Routes In The Growth Of N-Methyl-N-Nitrosourea-Induced Breast Cancer In Sprague Dawley Rats: A Systematic Review 2014–2024, Adilla Soraya Prameswari, Ruendhita Azzahra Sari Sompokan, Annisa Annisa, Rachma Greta Perdana Putri, Dewi Yuniasih, Muhamad Danian, Muhammad Tri Yoga Tianotak

Folia Medica Indonesiana

Breast cancer is one of the[-6pc]AU: Please provide affiliations for your paper. leading causes of death for women worldwide, characterized by malignant tumors in the mammary epithelium. Breast cancer modelling using Sprague Dawley animals induced by N-Methyl-N-Nitrosourea (MNU) compounds is commonly used through various administration routes. The intraperitoneal route is the conventional route and the intraductal route is a new route capable of directly targeting the mammary ducts. Both routes affect the speed and characteristics of breast cancer cells in experimental animals. This systematic review using PubMed and Scopus databases from 2014-2024 aims to compare the effects of intraperitoneal and …

Go to article

Experimental Analysis Of Droplet Deformation Dynamics In Combined Dc Electric And Shear Flow Fields Using Dpiv, Ayad Ibrahim Khlewee Dec 2025

Experimental Analysis Of Droplet Deformation Dynamics In Combined Dc Electric And Shear Flow Fields Using Dpiv, Ayad Ibrahim Khlewee

Al-Esraa University College Journal for Engineering Sciences

This paper presented a systematic study of such droplet deformation at the intersection of uniform DC electric field and hydrodynamic shear flow, in which we focused on conductivity ratio (R) and permittivity ratio (S), describing their influence. The results demonstrate that droplet dynamics is extremely sensitive to the regime: under DC only, either elongation or compression depending on whether R > S or R S, similarly to classical EHD predictions. Under shear-only conditions, deformation was dictated by the balance of elongational stresses (EC) and rotational stresses (RC), with increasing capillary number (Ca) leading to progressive elongation and oscillatory orientation dynamics. When …

Go to article

The Imaginary In Architecture: The Conceptual Structure Of The Imaginary And Its Manifestations In Architectural Text, Noora Ghadir Hlail, Abbas Ali Hamza Al Greiza Dec 2025

The Imaginary In Architecture: The Conceptual Structure Of The Imaginary And Its Manifestations In Architectural Text, Noora Ghadir Hlail, Abbas Ali Hamza Al Greiza

Al-Esraa University College Journal for Engineering Sciences

This study explores the concept of the imaginary as a collective cognitive and cultural structure that shapes symbolic reality through images, myths, and deeply rooted symbols in collective memory. The research applies this concept within the field of architecture, aiming to understand how the imaginary is embodied in architectural texts as symbolic carriers of identity and cultural meaning. Adopting a descriptive-analytical methodology, the study develops a theoretical framework comprising key components—preconditions, mechanisms, and traits of the imaginary—and applies it to two selected case studies: the General Secretariat of the Iraqi Council of Ministers and the Louvre Abu Dhabi Museum. The …

Go to article

Generative Ai For Method Development In Analytical Chemistry: A New Paradigm In Experimental Design And Optimization, Yasir Fathi Mahmood Dec 2025

Generative Ai For Method Development In Analytical Chemistry: A New Paradigm In Experimental Design And Optimization, Yasir Fathi Mahmood

Al-Esraa University College Journal for Engineering Sciences

The fast development of artificial intelligence (AI), especially generative AI models, is changing the environment of analytical chemistry. As classical method generation in analytical methods relies on manual trial-and-error methodology as well as statistical methods, generative AI is a new paradigm with automated generation of experimental methodology and optimization. In this paper, the authors discuss the use of generative AI-based technologies, including large language models (LLMs) and neural network-based generators, to create new, efficient, and customized methods of analysis. The paper examines existing applications, technology frameworks, and issues and offers a roadmap with regards to the future incorporation of generative …

Go to article

Numerical Modeling And Experimental Validation Of A High-Temperature Latent Heat Thermal Energy Storage System Using Metallic Phase Change Materials For Concentrated Solar Power Applications, Fouad Hashim Sharhan Dec 2025

Numerical Modeling And Experimental Validation Of A High-Temperature Latent Heat Thermal Energy Storage System Using Metallic Phase Change Materials For Concentrated Solar Power Applications, Fouad Hashim Sharhan

Al-Esraa University College Journal for Engineering Sciences

To ensure reliable performance for the power-block of CSP plants, high power density and near-isothermal discharge must be achieved. A robust means of achieving this is through thermal energy storage (TES). High temperature latent heat storage (LHS) with phase change materials (PCMs) can serve these purposes, however the conventional salts used in PCMs typically suffer from low thermal conductivity that limits power density and increases energy storage charging/discharging times. This manuscript investigates ways to address these limitations using high temperature metallic phase change materials (MPCMs) while also developing a validated numerical framework to aid in their design. To this end, …

Go to article

Construction And Data-Driven Analysis Of A Stochastic, Individual-Based Opioid Epidemiology Network Model, Leigh Bennett Pearcy, Owen Queen, Vincent Jodoin, Suzanne Lenhart, Christopher Strickland Dec 2025

Construction And Data-Driven Analysis Of A Stochastic, Individual-Based Opioid Epidemiology Network Model, Leigh Bennett Pearcy, Owen Queen, Vincent Jodoin, Suzanne Lenhart, Christopher Strickland

Mathematical Modelling and Numerical Simulation with Applications

While substance use epidemiology has been an active area of mathematical research in recent years, the social and mental processes that are involved in the development of substance use disorders have presented challenges to advancing the epidemiological theory and how they differ from the contraction of pathogenic disease. Such distinction is especially pertinent in the context of the current United States opioid epidemic and its intersection with the recent COVID-19 pandemic, as both prescription drugs and social influence play major roles in the development of opioid use disorder. In this paper, we construct a stochastic network model capturing how individual …

Go to article

Optimal Control Of Stochastic Systems: A Numerical Study Of The Stochastic Linear Quadratic Regulator Framework, Gülşen Orucova Büyüköz, Yaprak Güldoğan Dericioğlu, Tuğçem Partal Dec 2025

Optimal Control Of Stochastic Systems: A Numerical Study Of The Stochastic Linear Quadratic Regulator Framework, Gülşen Orucova Büyüköz, Yaprak Güldoğan Dericioğlu, Tuğçem Partal

Mathematical Modelling and Numerical Simulation with Applications

Optimal control of stochastic linear systems is fundamental in control theory, with applications in robotics, finance, and engineering. The Stochastic Linear Quadratic Regulator (SLQR) derives optimal feedback laws via the Riccati equation but requires numerical discretization of the resulting stochastic dynamics. Despite extensive studies on numerical methods for stochastic differential equations, their performance within the SLQR framework remains insufficiently explored. This study compares two predictor–corrector schemes of different orders: the Order 1.0 Predictor-Corrector (PC) method and the Order 2.0 Weak PC method. A one-dimensional linear quadratic problem with a closed-form solution enables precise error evaluation against the analytical trajectory. Convergence …

Go to article

Analysis And Numerical Investigation Of A Breast Cancer Treatment Model Incorporating Ketogenic Diet And Immune Boosters Via Optimal Control Theory, Kunnisai Muniroh, Ummu Habibah, Wuryansari Muharini Kusumawinahyu, Nur’Izzati Hamdan Dec 2025

Analysis And Numerical Investigation Of A Breast Cancer Treatment Model Incorporating Ketogenic Diet And Immune Boosters Via Optimal Control Theory, Kunnisai Muniroh, Ummu Habibah, Wuryansari Muharini Kusumawinahyu, Nur’Izzati Hamdan

Mathematical Modelling and Numerical Simulation with Applications

This paper develops a mathematical model to investigate breast cancer dynamics by incorporating tumor–immune interactions, ketogenic diet effects, and medical treatment. The model is formulated as a system of nonlinear ordinary differential equations and analyzed within an optimal control framework. Time-dependent control variables are introduced to represent treatment strategies aimed at minimizing tumor progression while reducing therapeutic costs. The model’s well-posedness is established through positivity and boundedness analysis. The necessary conditions for optimality are derived using Pontryagin’s Minimum Principle, resulting in a coupled system of state and adjoint equations. Numerical solutions are obtained using the fourth-order Runge–Kutta method combined with …

Go to article

Re: Approval Letter For The Butte Priority Soils Operable Unit (Bpsou) Revised Draft Final 2022 Insufficiently Reclaimed Sites Sampling: Bres No. 30 – Atlantic-1 Site Evaluation Summary Report (Dated October 24, 2025), Molly Roby Dec 2025

Re: Approval Letter For The Butte Priority Soils Operable Unit (Bpsou) Revised Draft Final 2022 Insufficiently Reclaimed Sites Sampling: Bres No. 30 – Atlantic-1 Site Evaluation Summary Report (Dated October 24, 2025), Molly Roby

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Go to article

Re: Conditional Approval For The Butte Priority Soils Operable Unit (Bpsou) Revised Unreclaimed Sites Ur-08 (Anderson Shaft) – Remedial Action Work Plan (Rawp) (Dated October 24, 2025), Molly Roby Dec 2025

Re: Conditional Approval For The Butte Priority Soils Operable Unit (Bpsou) Revised Unreclaimed Sites Ur-08 (Anderson Shaft) – Remedial Action Work Plan (Rawp) (Dated October 24, 2025), Molly Roby

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Go to article

Re: Approval Letter For The Butte Priority Soils Operable Unit (Bpsou) Revised Draft Final 2022 Insufficiently Reclaimed Sites Sampling: Bres No. 32 – Corra 2 Dump Site Evaluation Summary Report (Dated October 24, 2025), Molly Roby Dec 2025

Re: Approval Letter For The Butte Priority Soils Operable Unit (Bpsou) Revised Draft Final 2022 Insufficiently Reclaimed Sites Sampling: Bres No. 32 – Corra 2 Dump Site Evaluation Summary Report (Dated October 24, 2025), Molly Roby

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Go to article

Reimagining Pain: The Role Of Mental Imagery In Pain Experience, Jemma Todd, Louise Sharpe, Julie Ji, Brydee Pickup, Tessa Rooney, Emily A Holmes Dec 2025

Reimagining Pain: The Role Of Mental Imagery In Pain Experience, Jemma Todd, Louise Sharpe, Julie Ji, Brydee Pickup, Tessa Rooney, Emily A Holmes

School of Psychology

No abstract provided.

Go to article

Efficient Task Allocation Technique For Robots In Smart Warehouse Using Center Of Items (Coi) Methodology, ‪Ahmed Yahya‬‏, Mohamed S. Saraya, Ahmed I. Saleh Dec 2025

Efficient Task Allocation Technique For Robots In Smart Warehouse Using Center Of Items (Coi) Methodology, ‪Ahmed Yahya‬‏, Mohamed S. Saraya, Ahmed I. Saleh

Mansoura Engineering Journal

Nowadays, online shopping is very important in Daily life. in 2020 During the quarantine during the spread of COVID-19, online orders increased dramatically, as a result of the great progress in fifth-generation technologies and using the Internet of Things (IoT) and industrial Internet of Things (IIoT), industry 4.0 and 5.0, fog computing, cloud computing, robots systems, and drones systems. Smart warehouses picking system becomes a Basic need and can be implemented to improve efficiency in logistics. Smart warehouses are growing more dependent on robot systems to make the process of meeting these requests more flexible and effective. Therefore, the allocation …

Go to article

The Role Of Fuzzy Logic In Cost-Volume-Profit Analysis, Ahmed Imad Abed Al-Atabe, Mohammed Wafi Abbas Al-Shammar Dec 2025

The Role Of Fuzzy Logic In Cost-Volume-Profit Analysis, Ahmed Imad Abed Al-Atabe, Mohammed Wafi Abbas Al-Shammar

Muthanna Journal of Administrative and Economics Sciences

Cost-volume-profit analysis (CVP) is one of the most important basic tools in management accounting. It enables understanding the relationship between three key elements: costs, volume, and profit level. The problem with this research is that this type of analysis, in its traditional form, uses clear and fixed data, such as the variable cost per unit, total fixed costs, selling price, or sales volume, which can be accurately determined. However, these assumptions do not accurately reflect practical reality, which is often characterized by uncertainty and fluctuations. The research aims to utilize an artificial intelligence tool, fuzzy logic, as a more flexible …

Go to article

“Blessings Or Burdens”: Perceived Values And Disvalues Of Children Among Married Filipino Millennials, Althea Jeanne S. Asuncion, Martin Oliver G. Cabalona, Elijah De Guzman, Randelle Kirsten Hipolito, Stella P. Go Dec 2025

“Blessings Or Burdens”: Perceived Values And Disvalues Of Children Among Married Filipino Millennials, Althea Jeanne S. Asuncion, Martin Oliver G. Cabalona, Elijah De Guzman, Randelle Kirsten Hipolito, Stella P. Go

Sinaya: A Philippine Journal for Senior High School Teachers and Students

Children are perceived to carry meanings that either enrich or burden the lives of their parents, but limited studies have examined the perceived values and disvalues of children in the contemporary Filipino context. To address this gap, a survey was conducted among a hundred married Filipino millennials recruited through various social media platforms. The study investigated whether there were significant differences in child-related values and disvalues based on marital role (husbands or wives), parental status (with or without children), and parenting efficacy (moderate or high). Hotelling’s T2 results revealed no significant differences between husbands and wives in their combined scores …

Go to article

“She’S Not A Regular Mom, She’S A Cool Mom”: A Phenomenological Study Of Permissive Maternal Parenting On An Adolescent Daughter’S Interpersonal And Intrapersonal Relationships, Chloe Anne D. Gallardo, Williana Erich R. Balane, Ailesgreis Rinoah C. Lim, Juriel Elpiz B. Lumabi, Anna Margarita E. San Juan Dec 2025

“She’S Not A Regular Mom, She’S A Cool Mom”: A Phenomenological Study Of Permissive Maternal Parenting On An Adolescent Daughter’S Interpersonal And Intrapersonal Relationships, Chloe Anne D. Gallardo, Williana Erich R. Balane, Ailesgreis Rinoah C. Lim, Juriel Elpiz B. Lumabi, Anna Margarita E. San Juan

Sinaya: A Philippine Journal for Senior High School Teachers and Students

Within the context of Filipino gender and cultural norms, mothers often navigate both conservative and liberal approaches in raising their daughters. Among these, permissive parenting, which emphasizes freedom and minimal control, shapes adolescent development in unique ways. Therefore, this study explores how adolescent daughters perceive their permissive mothers’ influence on intrapersonal and interpersonal relationships. Grounded in the Self-Determination Theory, the study examines how autonomy, relatedness, and competence emerge in their daughters’ lived experiences and mother-daughter relationships. This research addresses the lack of local literature by shedding light on mother-daughter dynamics through an interpretative phenomenological approach. This study explores the lived …

Go to article

Living Through Adversity: Understanding Discrimination, Resilience, And Psychological Well-Being Among Filipino Transgender Youth, Allaiza Liz M. Sarino, Athena Christine P. Garcia, Kirsten Jada P. Hinto, Stella P. Go Dec 2025

Living Through Adversity: Understanding Discrimination, Resilience, And Psychological Well-Being Among Filipino Transgender Youth, Allaiza Liz M. Sarino, Athena Christine P. Garcia, Kirsten Jada P. Hinto, Stella P. Go

Sinaya: A Philippine Journal for Senior High School Teachers and Students

Transgender youth continue to face systemic discrimination and social marginalization. These barriers can hinder their development and negatively affect their psychological well-being. However, little is known about the specific ways Filipino transgender youth experience discrimination and develop resilience. To address this gap, this study sought to understand the lived experiences of Filipino transgender youth, focusing on the discrimination they face and the resilience factors that contribute to their psychological well-being. This study employed a descriptive phenomenological approach, utilizing online in-depth interviews with nine transgender youth aged 17 to 23 from Metro Manila, comprising five female-to-male and four male-to-female individuals, who …

Go to article

“Vadeng, Ang Bato, Darna!:” The Queering Strategies And Resulting Queer Representation In Sapphic Tiktok Fan Edits Of Darna (2022), Ashley Rian A. Branzuela, Eshe Dafny M. Donato, Ceana Louise L. Llanes, Allyza Rose S. Santiago, Nathaniel Rey D. Ferrer Dec 2025

“Vadeng, Ang Bato, Darna!:” The Queering Strategies And Resulting Queer Representation In Sapphic Tiktok Fan Edits Of Darna (2022), Ashley Rian A. Branzuela, Eshe Dafny M. Donato, Ceana Louise L. Llanes, Allyza Rose S. Santiago, Nathaniel Rey D. Ferrer

Sinaya: A Philippine Journal for Senior High School Teachers and Students

The Filipino teleserye, known for its social realism, offers insights into its viewers’ lives but often presents limited and stereotyped portrayals of LGBTQI+ individuals, including queer women, due to heteronormativity. Fanfiction, specifically slash fiction, resists this by reimagining heteronormative narratives from a queer angle. Despite digital media advancements, Philippine research has yet to analyze fan-led queer representation on digital storytelling platforms, such as TikTok. Hence, following similar research by McGorry (2022), this study purposively sampled fifty sapphic TikTok fan edits of the teleserye Darna (2022) to examine how Vadengs, fans of protagonists Narda Custodio (Darna) and Regina Vanguardia (Valentina), reimagined …

Go to article

Choices, Challenges, And Considerations: Exploring College Application Experiences Of De La Salle University Manila Senior High School Students To The Big Four Universities, Samantha Elise F. Bago, Argie Joseph F. Geronimo, Zenaida Victoria Alejandra M. Ilao, Kimberly Cassandra G. Jose, April Rose C. Gonzales Dec 2025

Choices, Challenges, And Considerations: Exploring College Application Experiences Of De La Salle University Manila Senior High School Students To The Big Four Universities, Samantha Elise F. Bago, Argie Joseph F. Geronimo, Zenaida Victoria Alejandra M. Ilao, Kimberly Cassandra G. Jose, April Rose C. Gonzales

Sinaya: A Philippine Journal for Senior High School Teachers and Students

Most Filipino students strive to secure successful applications to universities such as the University of the Philippines (UP), Ateneo de Manila University (ADMU), De La Salle University (DLSU), and the University of Santo Tomas (UST). Known as the Big Four Universities, they are recognized for their high rankings, strong academic programs, scholarship opportunities, campus resources, strategic locations, alumni networks, and overall prestige. However, applying to these institutions is not without challenges, especially as senior high school (SHS) students balance their academic demands with application requirements. These narratives are often overlooked, overshadowed by the success or failure of the applications. Thus, …

Go to article

Bio-Papcz: Corn Starch-Based Composite Bioplastic Reinforced With Pineapple Leaf Fiber (Palf), Zinc Oxide (Zno), And Polyvinyl Alcohol (Pva), Marvin C. Caya, Shervin Austin C. Huang, Jovar Khalel J. Maghari, Ruel M. Levida Dec 2025

Bio-Papcz: Corn Starch-Based Composite Bioplastic Reinforced With Pineapple Leaf Fiber (Palf), Zinc Oxide (Zno), And Polyvinyl Alcohol (Pva), Marvin C. Caya, Shervin Austin C. Huang, Jovar Khalel J. Maghari, Ruel M. Levida

Sinaya: A Philippine Journal for Senior High School Teachers and Students

Plastic pollution poses a serious global threat, as petroleum-based plastics persist for centuries, and their surging production of over 450 million tons overwhelms ecosystems (Ritchie et al., 2023). Using a quantitative experimental research design, the study examined the effects of varying concentrations of cornstarch-based bioplastic reinforced with pineapple leaf fiber (PALF), polyvinyl alcohol (PVA), and zinc oxide (ZnO) on the bioplastic’s tensile strength and soil degradability. Sample C2 (ZnO 3.0 %w/w; PVA 9.0 %w/w) demonstrated the optimal tensile properties with a tensile strength of 0.76 MPa and an elongation at break of 6.40%, which was attributed to the addition of …

Go to article

Effects Of Foam Type And Thickness On Impact Resistance, Thermal Insulation, And Cost-Effectiveness Of Medical Containers For Drone Delivery, Josh Henry C. Soriano, Eriel V. Fonte, Lambertsus S. Novera, Nicolai Paolo B. Villarin, Joel B. Jalon, Jr. Dec 2025

Effects Of Foam Type And Thickness On Impact Resistance, Thermal Insulation, And Cost-Effectiveness Of Medical Containers For Drone Delivery, Josh Henry C. Soriano, Eriel V. Fonte, Lambertsus S. Novera, Nicolai Paolo B. Villarin, Joel B. Jalon, Jr.

Sinaya: A Philippine Journal for Senior High School Teachers and Students

Accessible healthcare remains a challenge for rural communities lacking reliable infrastructure for medical supply delivery. Delivery drones have recently emerged as a viable alternative, dropping medical containers during flight. However, the effectiveness of different foam types and thicknesses combined with corrugated cardboard as shock-absorbing materials in a medical container for delivery drones has yet to be tested. Thus, this study designed cost-effective containers using corrugated cardboard and multiple foam types and thicknesses, aiming to preserve the integrity of the contents, withstand impact, and control temperatures. Four foam types—polystyrene, polyurethane, polyethylene, and expanded polystyrene (EPS) —were tested at 1 cm, 2 …

Go to article

Comparing Individual Vs Mixed Treatments Of Chicken Bone Meal And Crab Shell Meal On The Growth Of Capsicum Annuum (Bell Pepper), Allthur Rudy R. Arroyo, John Rafael V. Capinia, Ethan Jude R. Reyes, Elnathan Jethro B. Sumalbag, Karl Benedict E. Viri, John Ray Cordova Estrellado, Kerry P. Cabral Dec 2025

Comparing Individual Vs Mixed Treatments Of Chicken Bone Meal And Crab Shell Meal On The Growth Of Capsicum Annuum (Bell Pepper), Allthur Rudy R. Arroyo, John Rafael V. Capinia, Ethan Jude R. Reyes, Elnathan Jethro B. Sumalbag, Karl Benedict E. Viri, John Ray Cordova Estrellado, Kerry P. Cabral

Sinaya: A Philippine Journal for Senior High School Teachers and Students

The recycling of nutrient-rich food waste reduces reliance on synthetic fertilizers, enhances soil quality, and improves plant growth. Existing studies have demonstrated the effectiveness of food waste, such as bone meal (B) and crab shell meal (S), as fertilizers; however, their combined use has not been investigated. This study aims to evaluate the effect of varying proportions of B and S fertilizers on the growth of Capsicum annuum (bell pepper) employing a random complete block design with 10 treatments (pure B, pure S, and a 50:50 BS mix, each at 7 g, 14 g, and 21 g) plus a control …

Go to article

Exploring The Metric Dimension Of The Graph Representing A Four-Ring Polycyclic Aromatic Hydrocarbon: Interstellar 1-Cyanopyrene, Andrei Matthew V. Robino, Sebastian Alex C. Traviña, Karl Benedict P. Narag, Mark Anthony B. Casao, Helix Raven C. Llanes, Azriel C. Alejo, Jonel C. Celamor Dec 2025

Exploring The Metric Dimension Of The Graph Representing A Four-Ring Polycyclic Aromatic Hydrocarbon: Interstellar 1-Cyanopyrene, Andrei Matthew V. Robino, Sebastian Alex C. Traviña, Karl Benedict P. Narag, Mark Anthony B. Casao, Helix Raven C. Llanes, Azriel C. Alejo, Jonel C. Celamor

Sinaya: A Philippine Journal for Senior High School Teachers and Students

A graph's metric dimension is a parameter that denotes the minimum possible number of vertices in a subset that gives each vertex in the graph a unique representation. Despite extensive research on the metric dimension of polycyclic aromatic hydrocarbons (PAHs), there is currently no focused analysis on the metric basis and metric dimension of 1-cyanopyrene. In chemistry, graphs can be used to depict molecular structures. In this study, graph theory, specifically the concept of metric dimensions, is applied to the molecular structure of 1-cyanopyrene, which was detected in space for the first time in 2024. 1-cyanopyrene is a molecule made …

Go to article

Experiences Of Bukidnon Farmers On The Use Of Carbonized Rice Hulls (Crh) Waste From Biomass Boilers As A Soil Conditioner, Dash Constantine S. Chamen, Queen Loraine D. Ban, Michael Justin O. Eluna, Pole Honson B. Gabitano, Ian Jay P. Saldo, Jhovel Roy D. Calo Dec 2025

Experiences Of Bukidnon Farmers On The Use Of Carbonized Rice Hulls (Crh) Waste From Biomass Boilers As A Soil Conditioner, Dash Constantine S. Chamen, Queen Loraine D. Ban, Michael Justin O. Eluna, Pole Honson B. Gabitano, Ian Jay P. Saldo, Jhovel Roy D. Calo

Sinaya: A Philippine Journal for Senior High School Teachers and Students

The long-term use of agricultural products that adversely affect soil is a significant issue for farmers. This study explored the potential of carbonized rice hulls (CRH) waste from biomass boilers as a sustainable soil conditioner. The research investigated the specific soil conditioning properties of CRH and explored the lived experiences of nine (9) Bukidnon farmers to correlate their observations with the material’s chemical profile. The composition analysis identified a high silica content and essential micronutrients, such as calcium and magnesium, which act as nutrient restorers and pH regulators. The thematic analysis of semi-structured interviews, four themes emerged to summarize the …

Go to article

Hanggang Kaibigan Lang, Hindi Kailanman Kasintahan: A Descriptive Phenomenological Approach On The Unrequited Feelings Within Cross-Sex Friendships Leading To Friendzone, Shekinah Mizpah P. Alutaya, Jm Cassandra M. Cammayo, John Kyle C. Mendoza, Liezl Rillera-Astudillo Dec 2025

Hanggang Kaibigan Lang, Hindi Kailanman Kasintahan: A Descriptive Phenomenological Approach On The Unrequited Feelings Within Cross-Sex Friendships Leading To Friendzone, Shekinah Mizpah P. Alutaya, Jm Cassandra M. Cammayo, John Kyle C. Mendoza, Liezl Rillera-Astudillo

Sinaya: A Philippine Journal for Senior High School Teachers and Students

This study examined the long-term emotional and relational consequences of being "friend-zoned" by a cross-sex best friend among Filipino young adults. Nine participants aged 18–35 met the inclusion criteria of having experienced unreciprocated romantic interest toward a cross-sex best friend; “best friend” was operationalized by relationship duration, mutual emotional disclosure, frequent contact, and self-identification as best friends, situating the inquiry within the Philippine cultural context. Data were collected through in-depth, semi-structured interviews that were analyzed using Giorgi’s descriptive phenomenological method, bracketing, to articulate the essential structure of the experience, with reflexive memo writing and an audit trail to support rigor. …

Go to article

First Prev Next Last