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Source And Distribution Of Polycyclic Aromatic Hydrocarbons (Pahs) In Surface Sediment From Chalong Bay, Phuket, Thailand, Danai Tipmanee, Yada Patchim, Penjai Sompongchaiyakul

Applied Environmental Research

This study aimed to investigate the spatial distribution and apportionment of potential sources of the 16 US-EPA priority PAHs in surface sediments of Chalong Bay, Phuket, Thailand. A total 28 of sediment samples were collected from areas with high maritime activity in Chalong Bay, subjected to conventional high recovery Soxhlet extraction, purified with SiO2 column chromatography, and quantified by Gas Chromatography-Mass Spectrometry (GC/MS). Total concentration of PAHs (Σ16PAHs) ranged from 31.15 to 1696 ng g−1 dry weight, with an average of 198.2 ± 318.5 ng g−1 dry weight. Binary diagnostic ratios plots were used to distinguish between petrogenic and pyrogenic …

Current Trends In Steroidal 17Α-Ethynylestradiol (Ee2) Removal From The Environment: A Review, Wasiu A. Abibu, Gafar Bamigbade, Amos O. Kolawole, Taiwo Ajayi, Abdul W. Sakariyau

Applied Environmental Research

Emerging contaminants have posed major environmental and health challenges to human and aquatic lives. They include pharmaceuticals, endocrine disrupting compounds (EDCs), persistent environmental pollutants and many more. EE2 is an example of an endocrine disrupting compounds (EDCs) increasingly gaining acceptance and used to augment the deficiencies of other reproductive hormones. EE2 constitutes environmental nuisance via discharge into aquatic bodies, thus, threatening aquatic lives and resulting in health defects in human. It is worthy of note that previous researchers have channeled their studies to identifying ways of expelling EE2 from the environment. However, they remain persistent in the environment. The current …

Scenario-Based Simulation Of Treatment Processes For Minimization Of Sludge Production From Al-Saad Wastewater Treatment Plant, Omar Gamil Abdelmajeed Hussien

Theses

The biological-activated sludge treatment process is the most widely used approach to treating domestic wastewater. It involves the transformation of soluble and particulate organic matter to gases and large amounts of settleable biomass (produced sludge). This sludge is considered one of the most pressing management challenges since its treatment represents approximately 50 to 60% of the total operational cost of a wastewater treatment plant (WWTP). The traditional management of excess sludge is by disposal in landfills, incineration, or agriculture reuse in the form of fertilizers but due to energy and environmental concerns, many jurisdictions developed strict policies and regulations for …

Cybersecurity Risk Assessment Using Graph Theoretical Anomaly Detection And Machine Learning, Goksel Kucukkaya

Engineering Management & Systems Engineering Theses & Dissertations

The cyber domain is a great business enabler providing many types of enterprises new opportunities such as scaling up services, obtaining customer insights, identifying end-user profiles, sharing data, and expanding to new communities. However, the cyber domain also comes with its own set of risks. Cybersecurity risk assessment helps enterprises explore these new opportunities and, at the same time, proportionately manage the risks by establishing cyber situational awareness and identifying potential consequences. Anomaly detection is a mechanism to enable situational awareness in the cyber domain. However, anomaly detection also requires one of the most extensive sets of data and features …

Bibliometric Survey On Reuse Of Treated Wastewater For Agriculture, Sagar Kolekar Prof., Rahul Raghvendra Joshi Prof., Kalyani Dhananjay Kadam Prof., Kanchan Khare Dr., Pennan Chinnasamy Dr.

Library Philosophy and Practice (e-journal)

The water is important for life after air but there is water shortage problem worldwide. The untreated wastewater pollutes fresh water resources. The reuse of treated wastewater for crop irrigation will reduce stress on freshwater and also provides nutrients. Wastewater had been reused for many generations, it was first discovered in 1973 and in continuation there onwards till today. The treated-wastewater reuse for irrigation of crops will reduce stress on freshwater and also provides nutrients. The main objective of this bibliometric study is analyze the research work done in the past in relation to wastewater treatment and its reuse. This …

Assessing Change In Runoff Water Parameters Through Road Shoulder Vegetated Filter Strips: Experimental Comparison Of Soils And Engineered Infiltration Media, Andrew Corrado, Mohammad Shokri

The Pegasus Review: UCF Undergraduate Research Journal

Placement of Vegetated Filter Strips (VFS) along roadways may facilitate removal of nutrients from stormwater runoff. The objective of this research is to compare water quality performance of a VFS containing engineered media to that of typical Florida sandy soil. Storms of variable intensity were simulated over two 1:1 scale physical models of typical one- and two-lane roadway shoulders, one with engineered media (treatment), and one without (control). Simulated roadway runoff was introduced as sheet flow from the roadway and precipitation was applied with a rainfall simulator. Samples of runoff and infiltrate were tested for Dissolved Oxygen (DO) concentration and …

Using Artificial Neural Network To Calculate Steady State Conditions, Nuriddin Nurali O'G'Li Normamatov, Muzaffar Burhanovich Khudayarov, Temurkhan Abduvahab O'G'Li Ikramov

Karakalpak Scientific Journal

The power systems steady-state problem are described by a system of nonlinear equations, and for their solution are widely used iterative techniques such as the Newton-Raphson and others. Recently, techniques based on the use of genetic algorithms, the theory of fuzzy sets, artificial neural networks have been applied to solve this problem. In this article feedforward neural networks are used for calculating the steady-state regimes. The modeling results were obtained with the results of calculations using the Newton-Raphson method.

Prediction Of Self-Diffusion Constants In Model And Real Systems Using Machine Learning, Joshua P. Allers

Chemical and Biological Engineering ETDs

Understanding diffusion of chemical compounds is important for the design and optimization of many chemical engineering and energy processes. Recent modifications to the Darken equation allow for accurate prediction of Maxwell-Stefan (MS) diffusion in mixtures. Still, there are few practical applications due to the requirement of individual self-diffusion constants. A reliable predictive model for self-diffusion constants would be highly valuable when used in conjunction with the modified Darken equation. Here, we show that Machine Learning (ML) can be used to develop generalized models for self-diffusion in Lennard Jones (LJ) systems and real systems of pure solutions. The use of Artificial …

Adventuring Into Complexity By Exploring Data: From Complicity To Sustainability, Tim Lutz

Northeast Journal of Complex Systems (NEJCS)

Problems of sustainability are typically represented by major present-day challenges such as climate change, biodiversity loss, and environmental and social injustice. Framed this way, sustainable lives and societies depend on finding solutions to each problem. From another perspective, there is only one problem behind them all, stated by Gregory Bateson as: “…the difference between how nature works and the way people think,” and complexity provides a way to define and approach this problem. I extend Edgar Morin’s conceptions of restricted and general complexity into pedagogy to address problems of simplicity and reductionist teaching. The proposed pedagogy is based on long …

Detecting A New Approach To Revive Dystopian Paranoid Sites, Shadi Osta, Marwan Halabi, Maged Youssef

Architecture and Planning Journal (APJ)

Until the nineteenth century, space delineation was tied only to the architectural norm, and even now, space is considered as a fundamental area that provide a safe and shelter for its user. Architecture historically has evolved significantly, altering the way people perceive space. Anciently, world civilization used to pay great attention in portraying semiotic of spatial experience in their architectural practices. Back when reflecting moods in architecture was part of utilization of the function. Moreover, Civilization has revolutionized the means of spatial delineation due to new trends in technological evolution. Therefore, to comprehend this association, the studies can distinguish how …

Assessment Of The Impact Of Climate Change On Hydrological Processes In The Chirchik River Basin, Kh.Sh. Gafforov, Sh.D. Sh.D.Tursunboev

Irrigation and Melioration

The importance of assessing past and future climate differences plays an important role in future planning in relation to climate change. This situation requires urgent and concerted action in several areas: technology, infrastructure, politics, economics, and the environment. The article evaluates the impact of changes in precipitation intensity on the water level in the global circulation model (GCM) RCP 4.5 and 8.5 scenarios in the 2030s, 2050s, and 2070s. This study is a useful reference for improving water resource management and ensuring the sustainability of agricultural products in the future, as well as for improving operational water management and agricultural …

An Innovative Seeder For Sowing Non-Loose Seeds Of Saxaul And Cherkez, E.T. Farmonov

Irrigation and Melioration

The main reasons for the absence of a seeder for mechanized sowing of non-loose seeds of fodder plants in deserts are analyzed in the article. The author has developed a technology for sowing non-loose seeds (saxaul and cherkez), which prevents clogging, crushing and breakage in the seeder hopper, and provides for uniform and stable sowing at a set rate and shallow depth over the entire field area without reducing the biological germination. An innovative seeder with a universal sowing unit is recommended. Field tests of the innovative seeder with the proposed universal sowing unit were conducted in February 2020, as …

Thermoelectric Generation And Thermophysical Properties Of Metal Oxide Nanofluids, Xinran Hou, Rong-Tsu Wang, Shaowen Huang, Jung-Chang Wang

Journal of Marine Science and Technology–Taiwan

This study describes the comprehensive characterization of the diverse water-based nanofluids involving aluminum oxide, titanium dioxide, and zinc oxide nanoparticles, which were prepared through the two-step synthesis method assisted by a microemulsion ultrasound skill with effects of both weight-percent concentration (wt.%) in the range of 1.0% and 5.0% and between 20 ^oC and 40 ⁰C. The mean cluster size, zeta potential, pH value, viscosity, thermal conductivity, absorbance, light absorption, and electrical charge density of the various nanofluids were surveyed by relative experiments. The results showed that the 2 wt.% Al₂O₃, 2 wt.% TiO_{2 …}

Wireless Sensor Network-Based Monitoring Of Bridge Pile Foundations For Detecting Scouring Depth, Han-Tang Huang, H. Ping Tserng, Ruei-Yu Hou, Mirosław Skibniewski

Journal of Marine Science and Technology–Taiwan

Climate change brings about unprecedented increases in the occurrence of storms and flooding. In response to increased risk of bridge pier scouring, there is a need for increased safety monitoring of bridges. This paper presents a wireless sensor network (WSN) - based solution developed to measure micro-vibrations of a bridge pier. Test measurement values are converted with the use of the Fast Fourier Transform (FFT) method to obtain natural frequencies. Scouring depth of the pier is estimated with the use of a Finite Element Method model. WSN is used to collect the signal and to test data transmission stability in …

A New Fuzzy Dea Model For Solving The Mcdm Problems In Supplier Selection, Chi-Mao Tsai, Hsuan-Shih Lee, Guo-Ya Gan

Journal of Marine Science and Technology–Taiwan

Supplier selection is a crucial task in supply chain management, and good supply chain management is essential to a company's ability to develop sustainably and gain the trust and satisfaction of its customers. In modern supply chain management, supplier selection often takes the form of a multi-criteria decision-making (MCDM) problem. Thus, to solve this problem, this study formulated a novel fuzzy MCDM model, which is based on the fuzzy data envelopment analysis model. This novel approach can transform the linguistic variables of assessment criteria into well-founded quantitative data for calculation. Moreover, our approach can effectively discriminate between decision-making units (both …

Evaluation Of The Human Discomfort Caused By Ship Vibrations, Laurentiu Picu, Eugen Rusu

Journal of Marine Science and Technology–Taiwan

The present work analyzes the subjective responses of people exposed to transient vibrations caused by systems with a single degree of freedom. In this context, the main objective of the research was to identify the main effect of vibrations on people's well-being at work (in particular on vessels crew) and to discover those frequencies that lead to the greatest discomfort. In order to achieve this goal, 12 laboratory experiments were carried out involving ten male subjects in good health, aged between 28 and 42. The variables of the vibratory system considered are: acceleration (4.8 ÷ 8.6 m/s¡2), amplitude (1 ÷ …

Application Of Physically Based Semi-Distributed Hec-Hms Model For Flow Simulation In Tributary Catchments Of Kaohsiung Area Taiwan, Fiaz Hussain, Ray-Shyan Wu, Kai-Chun Yu

Journal of Marine Science and Technology–Taiwan

Hydrologic modeling is a commonly used tool to understand the rainfallerunoff processes of gauged and ungauged catchments for proper quantitative estimation of water resources availability. In the present study, an attempt is made to simulate surface runoff using a physically based semi-distributed hydrological (HEC-HMS) model for four local-scale tributary catchments of Kaohsiung area Taiwan. The input physical parameters of the model were calculated and preprocessed in HEC-GeoHMS based on digital elevation model (DEM), land use, soil and hydro-meteorological data. The model performance was satisfactory with Nash Sutcliffe Efficiency (NSE) ¼ 0.51 to 0.86 and the coefficient of determination (R2) ¼ …

Evaluating Key Factors Of Container Shipping Lines From The Perspective Of High-Tech Industry Shippers, Chien-Lung Hsu, Tien-Chun Ho

Journal of Marine Science and Technology–Taiwan

Because of the changes in customers' needs and demands created by the development of container transport in the 1960s, the global container transport business has become increasingly competitive. With the high-tech industry ranged with one of the few competitive industries in Taiwan from 2002, container shipping lines have been forced to implement innovative operating patterns to meet the evolving demands of the high-tech industry shippers. This study conducts a survey questionnaire of domestic high-tech industry shippers to explore the different factors affecting their selection of container shipping lines, evaluating the key influencing factors by maritime marketing's 4C framework: customer needs, …

Beach Topography Surveying Using Unmanned Aerial Vehicle Photogrammetry Technology, Hui-Ming Fang, Kuan-Tsung Chang, Sung-Shan Hsiao, Shih-Peng Chiang

Journal of Marine Science and Technology–Taiwan

The mechanisms of in situ topography changes must be identified for spatial planning in coastal areas. In this study, the authors used in situ direct measurement methods and indirect remote-sensing technologies to develop a method for beach topography surveillance. Unmanned aerial vehicles (UAVs) have advantages of high portability and mobility and low operating altitude. Therefore, a UAV was equipped with a lightweight camera and a positioning system that comprised a global positioning system and an inertial measurement unit. Aerial photogrammetry and aerial triangu-lation methods were adopted for matching image feature points to obtain the corresponding topographic points in the sand. …

Adsorption And Transport Of Colloids At Interface And In Bulk, Jingyun Lee

LSU Doctoral Dissertations

Colloids are suspensions of microscopic insoluble particles dispersed in a continuum phase such as liquid or gas. Colloids are found in our everyday life from food and cosmetic industries to pharmaceutical and biomedical applications. Depending on a global minimum of the free-energy landscape, colloidal suspensions can be classified as two major classes: equilibrium or active colloidal system. This Ph.D dissertation presents strategies to engineer equilibrium self-assembled structures and out-of-equilibrium active matter using various interparticle forces.

First, we introduce the means to promote the equilibrium self-assembled structures driven by adsorption of colloids at interface. Typically, adsorption of colloids at interface is …

Gold-Semiconductor Photocatalysts For Water Treatment Under Visible And Ultraviolet Light, Daniel Willis

LSU Doctoral Dissertations

Water scarcity threatens the lives of millions of people worldwide. It is imperative to improve the energy efficiency and affordability of water treatment methods to avoid a looming water-energy crisis. To meet this challenge, I have pursued research on the use of sunlight—our most reliable and abundant source of energy—to drive water treatment through photocatalysis. I explored the literature and found gold-semiconductor materials to hold promise for harvesting sunlight and catalyzing the breakdown of waterborne contaminants. Initially, I designed a novel optical cavity with gold (Au) nanoparticles on a zinc oxide / titania (TiO₂) / aluminum film stack …

Development Of A New Technology For Obtaining The Substance Of The Drug Acetamizole, Sarvar Saidov, Asqar Abdurazakov, Rixsibay Karimov, Mavluda Baltabayeva

Chemical Technology, Control and Management

The main goal of this work is to obtain a preparation of acetamizole based on local raw materials by a more convenient method of acylation of 2-methoxycarbonylaminobenzimidazole with glacial acetic acid, this synthesis method is proposed for the first time. On the basis of the conducted experiments, favorable conditions for the reaction were found, the influence of the nature of the acid, the temperature, the duration of the reaction and other factors on the course of the reaction was studied, the technology was developed and implemented at the experimental production of "IHRV AN RUz". Based on experiments conducted by scientists …

Review-Analysis Of Existing Types Of Adcs With Their Subsequent Selection For Use In Fine Substance Obtaining Systems, O Zaripov, N Aminov

Technical science and innovation

The paper draws attention to the issue of global climate change on the planet. This process is influenced by the burning of natural resources. Thus, nanotechnology is seen as a possible solution to this issue. The term "nanotechnology" is considered in the perspective of commencing and applying novel materials, devices and systems. Their structure is varied and managed in nanometer range down to atoms, molecules and supramolecular formations. It is shown that the number of atoms in the bulk elements of such structures becomes close to A number of atoms on the surface of these elements. Due to the high …

Review-Analysis Of Existing Types Of Adcs With Their Subsequent Selection For Use In Fine Substance Obtaining Systems, Odiljon O. Zaripov, K Abidov

Technical science and innovation

The paper draws attention to the issue of global climate change on the planet. This process is influenced by the burning of natural resources. Thus, nanotechnology is seen as a possible solution to this issue. The term "nanotechnology" is considered in the perspective of commencing and applying novel materials, devices and systems. Their structure is varied and managed in nanometer range down to atoms, molecules and supramolecular formations. It is shown that the number of atoms in the bulk elements of such structures becomes close to A number of atoms on the surface of these elements. Due to the high …

The Influence Of Waste Water Sediment As A Component Of Asphalt Containing Heavy Metals On Soils Under Model Experimental Conditions, Elena Timofeeva Phd., Associate Professor, Vasilisa Kochetkova Master, Anatoly Klimanov Phd., Senior Lecturer, Sadritdin Turabdzhanov Dr. Professor

Technical science and innovation

Waste water sediment (WWS) is an ecological hazard to the environment and the search for its effective disposal is an urgent task. The main limitation of the WWS use is associated with the presence of the different ingredients - heavy metals, which can have a negative impact on the environment. There is asphalt production technolologies using WWS. This work considers the possibility of using asphalts with the WWS additives from car washes. This technology will reduce the negative influence on the environment due to the WWS recycling, as well as due to the possibility of using WWS instead of pure …

Chemical Properties Of Ordinary Chernozem Under Oil Contamination And Salinization Under The Conditions Of A Laboratory Experiment (Evidence From Republic Of Bashkortostan), Elena Timofeeva Phd., Associate Professor, Alisa Alexandrova Master, Sadritdin Turabdzhanov Dr., Professor

Technical science and innovation

The Republic of Bashkiria, Russia, is both an agricultural and crude producing region. Soil pollution and as the related process soil salinization are often caused by crude production. One of the most fertile soils - chernozems, represent more than a third of the soil cover of the Bashkortostan Republic. The research crucial task is to study chernozem salinization caused by petroleum pollution, it aims to research the chemism of soil salinization upon condition that crude oil and stratal waters flow into the soil simultaneously. The practical implementation of the proposed research is comprehension that we need to regulate the negative …

Utilization Of Household Waste-Based Solid Fuel, Shokhrukh Toshpo'latovich Khojiev, Bakhriddin Tilovkabulovich Berdiyarov Phd, Nodir Abdusamikovich Kadirov Phd, Bobur Mirsaid O'G'Li Obido, Mehmet Deniz Turan Phd

Technical science and innovation

Waste, garbage is a mixture of substances, objects and their parts that have lost their consumer properties in the process use and intended for disposal. The purpose of the article is note the main current concepts of the distribution and plastic waste disposal problem and propose its promising solutions. In Uzbekistan, the number of solid utilities waste is 63 million tons per year (about 450 kg per person), up to 25 % of them can be plastic. Plastics are organic materials based on synthetic or natural polymers consisting of monomer units, combined into long macromolecules. The most common plastics are …

Led-Based Optical Sensing Platforms For Multi-Analyte Detection, Youngho Shin

LSU Doctoral Dissertations

Real-time monitoring of phytoplankton groups provides important information about aquatic ecological states, nutrient abundance, and water pollution. A rapid and accurate method for monitoring phytoplankton in water is commonly performed by detecting fluorescence emission from the plankton; however, commercially available portable fluorescence sensors are still expensive, bulky, and limited in functions, such as lacking the capability of selectively detecting multiple phytoplankton groups. In this regard, a low-cost and portable fluorometer platform for phytoplankton detection was developed in order to address the issues that current portable fluorometers have.

This dissertation has four main goals: (1) perform a study on fluorescence measurement …

Techno-Economic Analysis Of Polyethylene Terephthalate Bio-Upcycling, Benard Nyawanga

USF Tampa Graduate Theses and Dissertations

Plastics have been used in almost every household appliance and various industrial applications for more than one hundred years. Plastic is among the most used materials in manufacturing worldwide. Plastic is cheap, light, durable, flexible, non-toxic, etc., and these properties make it suitable to use in manufacturing many types of appliances and materials. There has been an excessive reliance on plastic, leading to mass production. Despite being overly produced, there has been very little effort to recycle plastic, leading to massive accumulation of this environment. Plastic wastes are found in large patches in the world's oceans, waterways, and land. In …

Modulation Of Mechanical Stress Mitigates Anti-Dsg3 Antibody-Induced Dissociation Of Cell–Cell Adhesion, Xiaowei Jin, Jordan Rosenbohm, Eunju Kim, Amir Monemian Monemianesfahani, Kristina Seiffert-Sinha, James K. Wahl Iii, Jung Yul Lim, Animesh A. Sinha, Ruiguo Yang

Department of Mechanical and Materials Engineering: Faculty Publications

It is becoming increasingly clear that mechanical stress in adhesive junctions plays a significant role in dictating the fate of cell–cell attachment under physiological conditions. Targeted disruption of cell–cell junctions leads to multiple pathological conditions, among them the life-threatening autoimmune blistering disease pemphigus vulgaris (PV). The dissociation of cell–cell junctions by autoantibodies is the hallmark of PV, however, the detailed mechanisms that result in tissue destruction remain unclear. Thus far, research and therapy in PV have focused primarily on immune mechanisms upstream of autoantibody binding, while the biophysical aspects of the cell– cell dissociation process leading to acantholysis are less …