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2019

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Articles 14731 - 14760 of 15927

Full-Text Articles in Physical Sciences and Mathematics

Front Matter Jan 2019

Front Matter

The Synapse: Intercollegiate science magazine

No abstract provided.


The Synapse 21 Jan 2019

The Synapse 21

The Synapse: Intercollegiate science magazine

No abstract provided.


Phage Therapy: The Abandoned Treatment Making A Comeback, Anthony Gao Jan 2019

Phage Therapy: The Abandoned Treatment Making A Comeback, Anthony Gao

The Synapse: Intercollegiate science magazine

No abstract provided.


Ccr5: The Perfect Mutation?, Anna Harrison Jan 2019

Ccr5: The Perfect Mutation?, Anna Harrison

The Synapse: Intercollegiate science magazine

No abstract provided.


Phones: The Hand We Don't Wash, How To Protect Yourself Against Common Diseases, Nathalie Weiss Jan 2019

Phones: The Hand We Don't Wash, How To Protect Yourself Against Common Diseases, Nathalie Weiss

The Synapse: Intercollegiate science magazine

No abstract provided.


It’S Not Your Genes, It’S How You Use Them Biology: An Intro To Epigenetics, Cecilia Wallace Jan 2019

It’S Not Your Genes, It’S How You Use Them Biology: An Intro To Epigenetics, Cecilia Wallace

The Synapse: Intercollegiate science magazine

No abstract provided.


Weeks Of Inundation, Years Of Devastation: Processing Catastrophic Midwestern Flooding In Spring 2019, Monica Dix Jan 2019

Weeks Of Inundation, Years Of Devastation: Processing Catastrophic Midwestern Flooding In Spring 2019, Monica Dix

The Synapse: Intercollegiate science magazine

No abstract provided.


Beyond Brain And Body: New Perspectives On Performance Anxiety, Julia Peterson Jan 2019

Beyond Brain And Body: New Perspectives On Performance Anxiety, Julia Peterson

The Synapse: Intercollegiate science magazine

No abstract provided.


Harnessing The Bigger Picture: Treating Dyslexia By Improving Neuroplasticity, Neil Ruthen Jan 2019

Harnessing The Bigger Picture: Treating Dyslexia By Improving Neuroplasticity, Neil Ruthen

The Synapse: Intercollegiate science magazine

No abstract provided.


Did You Hear That? An Exploration Of Auditory Hallucinations In Schizophrenia Disorder, Victoria Fisher Jan 2019

Did You Hear That? An Exploration Of Auditory Hallucinations In Schizophrenia Disorder, Victoria Fisher

The Synapse: Intercollegiate science magazine

No abstract provided.


Blast From The Past: The Effects Of Battlefield Exposure On War Veterans, Elizabeth Toigo Jan 2019

Blast From The Past: The Effects Of Battlefield Exposure On War Veterans, Elizabeth Toigo

The Synapse: Intercollegiate science magazine

No abstract provided.


Dark Matter: An Invisible Universe, Meaghan Accarino Jan 2019

Dark Matter: An Invisible Universe, Meaghan Accarino

The Synapse: Intercollegiate science magazine

No abstract provided.


Half-Rations, Max Robinson Jan 2019

Half-Rations, Max Robinson

The Synapse: Intercollegiate science magazine

No abstract provided.


Chistopher Howard, Victoria Fisher Jan 2019

Chistopher Howard, Victoria Fisher

The Synapse: Intercollegiate science magazine

No abstract provided.


Crossword Corner, Emma Larson Jan 2019

Crossword Corner, Emma Larson

The Synapse: Intercollegiate science magazine

No abstract provided.


Meet The Staff Jan 2019

Meet The Staff

The Synapse: Intercollegiate science magazine

No abstract provided.


Exploring Subcellular Responses Of Prostate Cancer Cells To X-Ray Exposure By Raman Mapping, Maciej Roman, Agnieszka Panek, Hugh Byrne, Tomasz P Wrobel, Esen Efeoglu, Czeslawa Paluszkiewicz, Wojciech Maria Kwiatek Jan 2019

Exploring Subcellular Responses Of Prostate Cancer Cells To X-Ray Exposure By Raman Mapping, Maciej Roman, Agnieszka Panek, Hugh Byrne, Tomasz P Wrobel, Esen Efeoglu, Czeslawa Paluszkiewicz, Wojciech Maria Kwiatek

Articles

Understanding the response of cancer cells to ionising radiation is a crucial step in modern radiotherapy. Raman microspectroscopy, together with Partial Least Squares Regression (PLSR) analysis has been shown to be a powerful tool for monitoring biochemical changes of irradiated cells on the subcellular level. However, to date, the majority of Raman studies have been performed using a single spectrum per cell, giving a limited view of the total biochemical response of the cell. In the current study, Raman mapping of the whole cell area was undertaken to ensure a more comprehensive understanding of the changes induced by X-ray radiation. …


Spatial And Temporal Variation Of Heavy Metals In Pm10 And Pm2.5 Surrounding E-Waste Dismantling Community In Buriram Province, Siriwipha Chanthahong Jan 2019

Spatial And Temporal Variation Of Heavy Metals In Pm10 And Pm2.5 Surrounding E-Waste Dismantling Community In Buriram Province, Siriwipha Chanthahong

Chulalongkorn University Theses and Dissertations (Chula ETD)

Spatial and temporal variation of heavy metals in PM10 and PM2.5 surrounding e-waste dismantling community at Buriram Province were investigated during April and September. The aims of this study were to monitor and compare between those found at non- (NS) and e-waste dismantling house (ES) and open dump area (OD), and identify potential sources of heavy metals including As, Cr, Cu, Cd, Ni, Mn, Pb, Zn and Fe. The heavy metals in PM were analyzed by ICP-MS. The results showed that average PM2.5 and PM10 were highest at NS (33.8 ±18.8 µg/m3) and OD (57.6 ±17.5 µg/m3), respectively. PM2.5 was …


Occupational Hazard Identification And Health Risk Assessment Of Volatile Organic Compounds Exposure In Plastic Recycling Plants In Thailand: Case Studies Of Polypropylene And Polyethylene, Muhammed Ayaj Ansar Jan 2019

Occupational Hazard Identification And Health Risk Assessment Of Volatile Organic Compounds Exposure In Plastic Recycling Plants In Thailand: Case Studies Of Polypropylene And Polyethylene, Muhammed Ayaj Ansar

Chulalongkorn University Theses and Dissertations (Chula ETD)

Mechanical recycling in small scale plastic recycling plants in Thailand with mechanical and thermal driven stages may lead to various occupational hazards. This study aimed to improve occupational safety and health (OSH) by reducing these risks to acceptable levels from hazard identification and risk assessments which were mainly associated with indoor volatile organic compounds (VOCs) exposure. Accordingly, heat, noise, and VOCs were identified as potential hazards in the hazard identification from four selected small-scale plastic recycling plants in Thailand with polypropylene (PP) and polyethylene (PE) recycling practices. In exposure assessment, almost all the exposure levels of heat stress exceeded the …


Enrichment, Characterization And Application Of Bacterial Consortia For Degrading 2-Mercaptobenzothiazole In Rubber Processing Wastewater, Saowaluk Krainara Jan 2019

Enrichment, Characterization And Application Of Bacterial Consortia For Degrading 2-Mercaptobenzothiazole In Rubber Processing Wastewater, Saowaluk Krainara

Chulalongkorn University Theses and Dissertations (Chula ETD)

Benzothiazoles is widely used as vulcanized accelerator in rubber industry. The high volume of 2-MBT usages resulted in its release into the environment and can cause adverse health impacts. This study aimed to obtain efficient 2-MBT-degrading bacteria for wastewater application. The bacterial consortia were enriched by incubating rubber wastewater sludge in a medium containing 2-MBT for 28 days followed by a stepwise acclimation by gradually increasing 2-MBT concentrations in an NH4Cl-containing medium for 76 days. The process significantly increased the bacterial number and changed the dominant populations and degradative genes. Among these consortia, the EN consortium had the highest specific …


Application Of Boolean Logic To Natural Language Complexity In Political Discourse, Austin Taing Jan 2019

Application Of Boolean Logic To Natural Language Complexity In Political Discourse, Austin Taing

Theses and Dissertations--Computer Science

Press releases serve as a major influence on public opinion of a politician, since they are a primary means of communicating with the public and directing discussion. Thus, the public’s ability to digest them is an important factor for politicians to consider. This study employs several well-studied measures of linguistic complexity and proposes a new one to examine whether politicians change their language to become more or less difficult to parse in different situations. This study uses 27,500 press releases from the US Senate between 2004–2008 and examines election cycles and natural disasters, namely hurricanes, as situations where politicians’ language …


Prompt Fission Neutron Energy Spectrum Of N+235U, Jason M. Mcginnis Jan 2019

Prompt Fission Neutron Energy Spectrum Of N+235U, Jason M. Mcginnis

Theses and Dissertations--Physics and Astronomy

Despite nuclear fission prominence in nuclear physics, there are still several fundamental open questions about this process. One uncertainty is the energy distribution of neutrons emitted immediately after fission. In particular the relative energy distribution of neutrons above 8~MeV has been difficult to measure. This experiment measured the prompt neutron energy spectrum of n+235U from 3-10~MeV. The measurement took place at Los Alamos National Laboratory (LANL) and used a double time-of-flight technique to measure both the beam and fission neutron kinetic energies. Fission event timing was measured with a parallel plate avalanche counter. The fission neutron time-of-flight was …


A Detection And Data Acquisition System For Precision Beta Decay Spectroscopy, Aaron P. Jezghani Jan 2019

A Detection And Data Acquisition System For Precision Beta Decay Spectroscopy, Aaron P. Jezghani

Theses and Dissertations--Physics and Astronomy

Free neutron and nuclear beta decay spectroscopy serves as a robust laboratory for investigations of the Standard Model of Particle Physics. Observables such as decay product angular correlations and energy spectra overconstrain the Standard Model and serve as a sensitive probe for Beyond the Standard Model physics. Improved measurement of these quantities is necessary to complement the TeV scale physics being conducted at the Large Hadron Collider. The UCNB, 45Ca, and Nab experiments aim to improve upon existing measurements of free neutron decay angular correlations and set new limits in the search for exotic couplings in beta decay. To …


Ε-Superposition And Truncation Dimensions In Average And Probabilistic Settings For ∞-Variate Linear Problems, Jonathan M. Dingess Jan 2019

Ε-Superposition And Truncation Dimensions In Average And Probabilistic Settings For ∞-Variate Linear Problems, Jonathan M. Dingess

Theses and Dissertations--Computer Science

This thesis is a representation of my contribution to the paper of the same name I co-author with Dr. Wasilkowski. It deals with linear problems defined on γ-weighted normed spaces of functions with infinitely many variables. In particular, I describe methods and discuss results for ε-truncation and ε-superposition methods. I show through these results that the ε-truncation and ε-superposition dimensions are small under modest error demand ε. These positive results are derived for product weights and the so-called anchored decomposition.


Effect Of Hydrogen Exposure On The Electronic And Optical Properties Of Insulating Titanates, John G. Connell Jan 2019

Effect Of Hydrogen Exposure On The Electronic And Optical Properties Of Insulating Titanates, John G. Connell

Theses and Dissertations--Physics and Astronomy

Hydrogen exposure of insulating d0-titanates, such as SrTiO3 (STO), has displayed the formation of intriguing conducting states. These conducting states form through the use of forming gas (N2/H2) annealing or hydrogen plasma exposure, where hydrogen gas is exposed to high energy microwaves. The exposure of STO to hydrogen causes metallic conductivity due to the introduction of hydrogen cations on some of the oxygen sites. However, the optical properties of this hydrogen-exposed STO have not been well-studied. Further, Ba0.5Sr0.5TiO3 (BST), an insulating dielectric, also shows changes in its conductivity …


Confprofitt: A Configuration-Aware Performance Profiling, Testing, And Tuning Framework, Xue Han Jan 2019

Confprofitt: A Configuration-Aware Performance Profiling, Testing, And Tuning Framework, Xue Han

Theses and Dissertations--Computer Science

Modern computer software systems are complicated. Developers can change the behavior of the software system through software configurations. The large number of configuration option and their interactions make the task of software tuning, testing, and debugging very challenging. Performance is one of the key aspects of non-functional qualities, where performance bugs can cause significant performance degradation and lead to poor user experience. However, performance bugs are difficult to expose, primarily because detecting them requires specific inputs, as well as specific configurations. While researchers have developed techniques to analyze, quantify, detect, and fix performance bugs, many of these techniques are not …


Magnetic Field Monitoring In The Sns Neutron Edm Experiment, Alina Aleksandrova Jan 2019

Magnetic Field Monitoring In The Sns Neutron Edm Experiment, Alina Aleksandrova

Theses and Dissertations--Physics and Astronomy

It is a well known fact that the visible universe is made almost entirely of baryonic matter. Yet, this is also one of the greatest puzzles that physicists are trying to solve: Where did all of this matter come from in the first place? The Standard Model (SM) of particle physics predicts a baryon asymmetry that is much smaller than what is observed in nature. In order to try and explain this discrepancy, Sakharov (1967) postulated three necessary conditions for baryogenesis in the early universe. One of these is the requirement that charge conjugation (C) and the product of C …


A Machine Learning Approach To Artificial Floorplan Generation, Genghis Goodman Jan 2019

A Machine Learning Approach To Artificial Floorplan Generation, Genghis Goodman

Theses and Dissertations--Computer Science

The process of designing a floorplan is highly iterative and requires extensive human labor. Currently, there are a number of computer programs that aid humans in floorplan design. These programs, however, are limited in their inability to fully automate the creative process. Such automation would allow a professional to quickly generate many possible floorplan solutions, greatly expediting the process. However, automating this creative process is very difficult because of the many implicit and explicit rules a model must learn in order create viable floorplans. In this paper, we propose a method of floorplan generation using two machine learning models: a …


Heavy Metals In Hair And Nails Of Electronic Waste Dismantling Workers In Buriram, Thailand, Jaruwan Silachan Jan 2019

Heavy Metals In Hair And Nails Of Electronic Waste Dismantling Workers In Buriram, Thailand, Jaruwan Silachan

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study aimed to investigate and compare the concentration of eight heavy metals (As, Cd, Cr, Cu, Mn, Ni, Pb, and Zn) in hair and nails of e-waste workers and non-e-waste workers. Hair and nails samples were collected from participants in Daeng Yai sub-district, Ban Mai Chaiyapot district, and Ban Pao sub-district, Puttatisong district, Buriram, Thailand from December 2018 to January 2019. All sampled were digested with nitric acid by microwave digester and the concentration of heavy metals was analyzed by using Inductively Coupled Plasma Mass Spectrometry (ICP-MS). The results showed that the concentration of As and Cd in both …


Inhalation Exposure And Urinary Level Of Heavy Metals Of Electronic Waste Dismantling Workers In Buriram, Thailand., Panvarong Wongsabsakul Jan 2019

Inhalation Exposure And Urinary Level Of Heavy Metals Of Electronic Waste Dismantling Workers In Buriram, Thailand., Panvarong Wongsabsakul

Chulalongkorn University Theses and Dissertations (Chula ETD)

The main objective of this study was to assess the health risk of electronic waste dismantling workers exposed to heavy metal (As, Cd, Cr, Cu, Pb, Ni, Mn, and Zn) in PM10 using urinary heavy metals as a biomarker. The levels of heavy metals in the urine of non- and e-waste dismantling workers in consequence of the exposure to heavy metals in PM10 were investigated at Daengyai sub-district, Banmaichaiyapot district, and Banpao sub-district, Phutthaisong district, Buriram province, from February to March 2019. A face-to-face interview using a questionnaire was carried out to get additional information from the target participants. The …