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Articles 31771 - 31800 of 32702
Full-Text Articles in Entire DC Network
Prevalence Of Microplastics In Coastal Area Of Samae San, Thailand And Its Possible Source, Siwanath Pangpunth, Sujaree Bureekul, Voranop Viyakarn
Prevalence Of Microplastics In Coastal Area Of Samae San, Thailand And Its Possible Source, Siwanath Pangpunth, Sujaree Bureekul, Voranop Viyakarn
Applied Environmental Research
This research explored the abundance, morphology, and polymer composition of microplastics (MPs) in various environmental samples within the Samae San subdistrict involving surface soil nearby the dumping site, road dust soil, beach sand and sediment in the area with distinct land- based activities. Dumping site soil exhibited the highest concentration in items per kg of dry weight at 93,734.3, followed by road dust soil (573.0 ± 583.7), beach sand (99.8 ± 75.3), and sediment (83.1 ± 50.4). Morphological traits revealed similarities between transparent fiber-shaped particles in beach sands and sediment, and those in nearby road dust soil, while green sheet-shaped …
Removal Of Chromium From Aqueous System Using Nanocellulose Prepared From Defoliated Terminalia Catappa Leaves, Lopamudra Digal, Jayashree Mohanty
Removal Of Chromium From Aqueous System Using Nanocellulose Prepared From Defoliated Terminalia Catappa Leaves, Lopamudra Digal, Jayashree Mohanty
Applied Environmental Research
Nanocellulose is considered as a sustainable and renewable nanomaterial due to its abundant availability, biodegradability and biocompatibility characteristics. The study demonstrates the synthesis of nanocellulose from defoliated leaves of the Tropical Almond (Terminalia catappa) plant, abundantly available residual plant biomass and its subsequent use in eliminating Cr(VI) from the water system. The study demonstrates the preparation of nanocellulose by chemical means, employing NaOH and H2SO4 as chemical agents. Characterization techniques like FTIR, SEM, and XRD were used to study the chemical composition and morphology of the resulting nanocellulose. The characterization studies confirm the formation of nanocellulose from the plant biomass. …
Exploring Google Earth Engine, Machine Learning, And Gis For Land Use Land Cover Change Detection In The Federal Capital Territory, Abuja, Between 2014 And 2023, Akus Kingsley Okoduwa, Chika Floyd Amaechi
Exploring Google Earth Engine, Machine Learning, And Gis For Land Use Land Cover Change Detection In The Federal Capital Territory, Abuja, Between 2014 And 2023, Akus Kingsley Okoduwa, Chika Floyd Amaechi
Applied Environmental Research
This study aims to visualize various land use land cover (LULC) classes, estimate the net change in LULC types between the years 2014 and 2023, and use transition mapping to track LULC transitions within waterbody, vegetation, bareland, and buildup to better understand how land use types change from one another. Google Earth Engine (GEE), Random Forest (RF), and Geographic Information System (GIS) were used for LULC classification and change detection. The dataset employed for this study is Landsat-8 with 30 m resolution, and four land cover classes, which include waterbody, vegetation, bareland, and buildup, were classified for this study using …
Spatiotemporal Patterns Of Land Surface Temperature, Urban Heat Island, And Potential Heat Stress Risk Areas Assessment For Tropical Inland City And Coastal City In Thailand, Thar Htet Aung, Sakpod Tongleamnak, Rasamee Suwanwerakamtorn
Spatiotemporal Patterns Of Land Surface Temperature, Urban Heat Island, And Potential Heat Stress Risk Areas Assessment For Tropical Inland City And Coastal City In Thailand, Thar Htet Aung, Sakpod Tongleamnak, Rasamee Suwanwerakamtorn
Applied Environmental Research
Global warming and rapid urban growth, compounded by the urban heat island (UHI) effect, are posing substantial challenges for urban populations and ecological well-being due to increased heat stress risks. This study aimed to analyze the spatiotemporal patterns of land surface temperature (LST), UHI, and potential heat stress risk areas (PHSRA) in two distinct cities, an inland city, Nakhon Ratchasima, and a coastal city, Si Racha, during the summer. Geoinformatics techniques and Crichton’s Risk Triangle method were employed, using updated demographic data and Sentinel-3 data from 2017 to 2022. The findings indicate that the inland city daytime average LST values …
Geospatial Modelling Of Flood Susceptibility Of The Calabar City, Cross River State, Nigeria, Joel Efiong, Eme Efiong, Oluyemi Akintoye, Ebin Inah, Obianuju Awan, Francis Ogban
Geospatial Modelling Of Flood Susceptibility Of The Calabar City, Cross River State, Nigeria, Joel Efiong, Eme Efiong, Oluyemi Akintoye, Ebin Inah, Obianuju Awan, Francis Ogban
Applied Environmental Research
Flooding remains a major environmental problem in many parts of the world including Nigeria, causing untold losses. This study modelled the flood susceptibility of Calabar Metropolis using frequency ratio and geographical information system (GIS). Direct field observation and key informant approaches were used to obtain 127 previous and current flood locations in the study area from which a database of historical flood occurrence was developed. Using the geostatistical analyst tool within a geographical information environment the flood locations were split into two parts in the ratio of 70:30 percent for the training and testing processes, respectively. Eight flood conditioning factors …
Market Failure And Censorship In The Marketplace Of Ideas, John P. Anderson, Jeremy Kidd
Market Failure And Censorship In The Marketplace Of Ideas, John P. Anderson, Jeremy Kidd
Oklahoma Law Review
No abstract provided.
Tesla, Let Me Fix My Car: The Right To Repair And The Need For A Balance Between Public And Private Enforcement, Emanuele S. Putrino
Tesla, Let Me Fix My Car: The Right To Repair And The Need For A Balance Between Public And Private Enforcement, Emanuele S. Putrino
Oklahoma Law Review
No abstract provided.
Prioritizing Oklahoma Mothers: Recommending Rehabilitation And Recovery Rather Than Punishment For Pregnancy, Alex B. Cox
Prioritizing Oklahoma Mothers: Recommending Rehabilitation And Recovery Rather Than Punishment For Pregnancy, Alex B. Cox
Oklahoma Law Review
No abstract provided.
Re/Descheduling Marijuana Through Administrative Action, Scott Bloomberg, Alexandra Harriman, Shane Pennington
Re/Descheduling Marijuana Through Administrative Action, Scott Bloomberg, Alexandra Harriman, Shane Pennington
Oklahoma Law Review
No abstract provided.
After Affirmative Action: Contextual Admissions And The Future Of African American Law School Enrollment, Nathan L. Bennett Fleming
After Affirmative Action: Contextual Admissions And The Future Of African American Law School Enrollment, Nathan L. Bennett Fleming
Oklahoma Law Review
No abstract provided.
The Nation’S Transfer Tax Regime And The Tax Gap, Jay A. Soled
The Nation’S Transfer Tax Regime And The Tax Gap, Jay A. Soled
Oklahoma Law Review
No abstract provided.
Interpolation, Litigation, And Copyright Confusion: How The Music Industry’S Influence Is Hindering Creativity, Hannah Edmondson
Interpolation, Litigation, And Copyright Confusion: How The Music Industry’S Influence Is Hindering Creativity, Hannah Edmondson
Oklahoma Law Review
No abstract provided.
“Facet” Or “Facets” Of Executive Privilege In Oklahoma? Vandelay’S Unclear Outcome, Nick Candido
“Facet” Or “Facets” Of Executive Privilege In Oklahoma? Vandelay’S Unclear Outcome, Nick Candido
Oklahoma Law Review
No abstract provided.
Copyright In Ai Training Data: A Human-Centered Approach, David W. Opderbeck
Copyright In Ai Training Data: A Human-Centered Approach, David W. Opderbeck
Oklahoma Law Review
No abstract provided.
Curing Terry’S Colorblindness, Ilan Friedmann-Grunstein
Curing Terry’S Colorblindness, Ilan Friedmann-Grunstein
Oklahoma Law Review
No abstract provided.
Taking Aim At Shotspotter: Gunshot Surveillance, The Fourth Amendment, And An Argument For Sonic Security, Emily A. Fogg
Taking Aim At Shotspotter: Gunshot Surveillance, The Fourth Amendment, And An Argument For Sonic Security, Emily A. Fogg
Oklahoma Law Review
No abstract provided.
On The Basis Of Pink: Finding A Balanced Approach To Addressing Gender-Based Price Discrimination On A National Level, Emily L. Brown
On The Basis Of Pink: Finding A Balanced Approach To Addressing Gender-Based Price Discrimination On A National Level, Emily L. Brown
Oklahoma Law Review
No abstract provided.
Balancing Efficiency And Authority: The Proper Role Of Magistrate Judges In Section 1782 Applications For International Discovery, Sophia Silvernail
Balancing Efficiency And Authority: The Proper Role Of Magistrate Judges In Section 1782 Applications For International Discovery, Sophia Silvernail
Oklahoma Law Review
No abstract provided.
The Right To Fail, Alexander A. Boni-Saenz
Intimate Relationships And Supported Decision Making, Leslie Francis
Intimate Relationships And Supported Decision Making, Leslie Francis
Oklahoma Law Review
No abstract provided.
Discrimination And Barriers: Abortion Access For Disabled Individuals After Dobbs, Jennifer L. Brinkley
Discrimination And Barriers: Abortion Access For Disabled Individuals After Dobbs, Jennifer L. Brinkley
Oklahoma Law Review
No abstract provided.
Chronic Conditions And Reproduction In A Post-Dobbs World, Allison M. Whelan
Chronic Conditions And Reproduction In A Post-Dobbs World, Allison M. Whelan
Oklahoma Law Review
No abstract provided.
Reproductive Federalism & Disabled Citizenship, Heather A. Swadley
Reproductive Federalism & Disabled Citizenship, Heather A. Swadley
Oklahoma Law Review
No abstract provided.
Mothers With Disabilities In The Workplace Post-Pandemic & Post-Dobbs, Nicole Buonocore Porter
Mothers With Disabilities In The Workplace Post-Pandemic & Post-Dobbs, Nicole Buonocore Porter
Oklahoma Law Review
No abstract provided.
Foreword: Rewriting The Script, Robyn M. Powell
Foreword: Rewriting The Script, Robyn M. Powell
Oklahoma Law Review
No abstract provided.
Fuzzy Digital Signature Scheme For Binary Noisy Strings With Respect To Hamming Distance, Ittanee Srikham
Fuzzy Digital Signature Scheme For Binary Noisy Strings With Respect To Hamming Distance, Ittanee Srikham
Chulalongkorn University Theses and Dissertations (Chula ETD)
One of the risks associated with public key infrastructure (PKI) pertains to the security of the user's private key. Given the imperative for stringent protection of this key, a proposed solution to mitigate this risk involves the utilization of biometric information. Although biometric information is fuzzy, it cannot be used directly as a cryptographic key. Thus, our investigation commenced into the exploration of ``Signature Scheme with a Fuzzy Private Key" by Takahashi et al. They introduced a new concept of digital signature called ``fuzzy signature" for real vectors with $L_{\infty}$ metric. A fuzzy signature is a signature scheme that uses …
Linear Actuator Using Electromagnetic Brake For Damping Modulation In Physical Human-Robot Interaction, Zahid Ullah
Linear Actuator Using Electromagnetic Brake For Damping Modulation In Physical Human-Robot Interaction, Zahid Ullah
Chulalongkorn University Theses and Dissertations (Chula ETD)
Improving the transparency of high-transmission-ratio linear actuators is essential for enhancing the safety and performance of high-force robotic systems that engage in physical contact with humans in unstructured environments. However, achieving this goal presents significant challenges. A proposed solution for active body weight support systems involves a linear actuator design, combining a high-force unit with an agile, highly back-drivable unit, using an electrorheological-fluid brake. This dissertation introduces an approach that utilizes an electromagnetic (EM) brake with a reduced rotor inertia to address these challenges. The EM brake's increased torque capacity allows for integration with a low-gear-ratio linear transmission. The mini …
Uv-Enhanced Catalytic Oxidative Cleavage Of Oleic Acid., Trinnasit Wittayakullertsin
Uv-Enhanced Catalytic Oxidative Cleavage Of Oleic Acid., Trinnasit Wittayakullertsin
Chulalongkorn University Theses and Dissertations (Chula ETD)
Oleic acid, a key component of plant oils such as palm oil, is a versatile feedstock for producing high-value bio-based chemicals. Utilizing its potential aligns with Thailand's objective of promoting sustainability as a premier palm oil producer. The conventional oxidative cleavage of oleic acid typically requires extreme conditions, including high temperatures, and ozone, which are expensive and harmful to the environment. This research provides an innovative method for utilizing ultraviolet (UV) radiation to increase oxidative cleavage at low temperatures (below 80°C). It employs hydrogen peroxide (H2O2) as an oxidizing agent and tungsten trioxide (WO3) as a catalyst to generate hydroxyl …
Prediction Of Daily Outpatient Volume Using Ensemble Empirical Mode Decomposition And Long - Short Term Memory, During The Incident, Teeraphat Buengbongkoch
Prediction Of Daily Outpatient Volume Using Ensemble Empirical Mode Decomposition And Long - Short Term Memory, During The Incident, Teeraphat Buengbongkoch
Chulalongkorn University Theses and Dissertations (Chula ETD)
Effective hospital resource management is essential for controlling service costs and enhancing workforce efficiency, particularly during abnormal situations that cause sudden fluctuations in patient volumes. Hospitals often encounter difficulties in managing resources and predicting patient numbers due to uncertain and volatile data. Accurate patient volume predictions during such times can enable hospitals to allocate resources effectively, maintaining appropriate costs and optimizing workforce efficiency.This research presents a solution for predicting daily outpatient visits at a private hospital in Thailand during the COVID-19 outbreak, serving as a case study. The proposed method employs Ensemble Empirical Mode Decomposition (EEMD) to preprocess data by …
Extraction Of Lipid And Polysaccharides From Rambutan Seed Waste By Supercritical Carbon Dioxide And Subcritical Water, Kamonthip Nilmat
Extraction Of Lipid And Polysaccharides From Rambutan Seed Waste By Supercritical Carbon Dioxide And Subcritical Water, Kamonthip Nilmat
Chulalongkorn University Theses and Dissertations (Chula ETD)
The rambutan processing industry generates around 37,000–42,000 tons of seed waste each year, which holds potential for sustainable utilization. This study investigates the extraction of lipids and polysaccharides from rambutan seeds using green extraction technologies. Initial analysis revealed that rambutan seeds contain lipids 30.48%, lipids, 11.9%, carbohydrates 42%, fiber 6.6%, and ash 1.72%. Lipid extraction using supercritical CO2 with ethanol (SCCO2-EtOH) achieved higher phenolic content and antioxidant activity compared to Soxhlet extraction. After that, the defatted rambutan seeds underwent additional processing to extract polysaccharides by subcritical water extraction (SWE) and hot water extraction (HWE). Supercritical water extraction (SWE) at ideal …