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Articles 1471 - 1500 of 2039

Full-Text Articles in Medicine and Health Sciences

Primary Prevention Of Cardiovascular Diseases In Uzbekistan, E. R. Urazaliyeva, A. K. Ermatova, D. Y. Ramanova Mar 2019

Primary Prevention Of Cardiovascular Diseases In Uzbekistan, E. R. Urazaliyeva, A. K. Ermatova, D. Y. Ramanova

Central Asian Problems of Modern Science and Education

Every year, an estimated 17 million people globally die of cardiovascular diseases (CVD), particularly heart attacks and strokes. CVDs occur almost equally in men and women. Although heart attacks and strokes are major killers in all parts of the world, 80% of premature deaths from these causes could be avoided by controlling the main risk factors: tobacco, unhealthy diet and physical inactivity. By 2015, the total number of cardiovascular disease (CVD) deaths (mainly coronary heart disease, stroke, and rheumatic heart disease) had increased globally to 17.5 million from 14.4 million in 1990.


Cognitive Impairment In Patients With Parkinson‘S Disease, N. A. Mansurova Mar 2019

Cognitive Impairment In Patients With Parkinson‘S Disease, N. A. Mansurova

Central Asian Problems of Modern Science and Education

The article presents the data of our studies on cognitive impairment in patients with Parkinson's disease (PD): their characteristics and risk factors, features of clinical manifestations


Vaping Is An Urgent Threat To Public Health, Elliott M. Reichardt, Julie R. Guichon Mar 2019

Vaping Is An Urgent Threat To Public Health, Elliott M. Reichardt, Julie R. Guichon

Sociology & Anthropology Faculty publications

No abstract provided.


Cisize Version 1.0, Sas-Based Freeware (And Accompanying Manual), M. R. Jiroutek Feb 2019

Cisize Version 1.0, Sas-Based Freeware (And Accompanying Manual), M. R. Jiroutek

Pharmaceutical Sciences

created from code written

for dissertation. Based on the methodology presented in Jiroutek, et al. (2003), the software computes exact target probabilities of interest (including power) for any scalar parameter in a General Linear Multivariate Model (GLMM) with Gaussian errors and fixed predictors. Consisting of a single SAS IML module, this software focuses on sample size computations for studies aims at estimating a confidence interval.


Ecological Niche Modeling As A Tool For Prediction Of The Potential Geographic Distribution Of Bacillus Anthracis Spores In Tanzania, Elibariki R. Mwakapeje, Sood A. Ndimuligo, Gladys Mosomtai, Samuel Ayebare, Luke Nyakarahuka, Hezron E. Nonga, Robinson H. Mdegela, Eystein Skjerve Feb 2019

Ecological Niche Modeling As A Tool For Prediction Of The Potential Geographic Distribution Of Bacillus Anthracis Spores In Tanzania, Elibariki R. Mwakapeje, Sood A. Ndimuligo, Gladys Mosomtai, Samuel Ayebare, Luke Nyakarahuka, Hezron E. Nonga, Robinson H. Mdegela, Eystein Skjerve

All Peer-Reviewed Publications

Introduction: Anthrax is caused by the spore-forming, Gram-positive bacterium Bacillus anthracis. The aim of this study was to predict the potential distribution of B. anthracis in Tanzania and produce epidemiological evidence for the management of anthrax outbreaks in the country. Methods: The Maxent algorithm was used to predict areas at risk of anthrax outbreaks based on the occurrence and environmental data in Arusha and Kilimanjaro regions; the model was later transferred to predict the entire country. Seventy percent of the occurrence data were used to train the model, while 30% were used for model evaluation. Results: Four regions of northern …


Data Collection Curated With An Application Ontology Describes The Methods And Results Upon Performing An Ex-Vivo Voltage-Clamp Assay On Outer Hair Cells Of The Mammalian Cochlea, Brenda Farrell, Jason Bengtson Jan 2019

Data Collection Curated With An Application Ontology Describes The Methods And Results Upon Performing An Ex-Vivo Voltage-Clamp Assay On Outer Hair Cells Of The Mammalian Cochlea, Brenda Farrell, Jason Bengtson

Research Data

This data collection describes the electrical properties of outer hair cells isolated from the mammalian cochlea of the domestic guinea pig. This data was obtained by performing whole-cell patch clamp voltage clamp assay on cells and monitoring the electrical admittance during a DC voltage ramp. The membrane capacitance was then calculated at each membrane potential from this admittance, and the voltage-independent and voltage-dependent membrane capacitance was determined upon further analysis. In some case the DC conductance was also measured by interrogation of the cell with voltage-step function which was calculated from the change in the mean steady-state current with respect …


Validity And Reliability Of The Authentic Happiness Scale, Esat Sanli, Seher Balci Celik, Cem Gencoglu Jan 2019

Validity And Reliability Of The Authentic Happiness Scale, Esat Sanli, Seher Balci Celik, Cem Gencoglu

Khazar Journal of Humanities and Social Sciences

Studies on the concept of happiness have led to questions about whether all symptoms of happiness correspond to a real and healthy emotional state. Therefore, in this research, a scale was developed to examine the concept of “authentic happiness” coined by Seligman. Firstly, literature that explains authentic happiness and defines its relationship to other psychological concepts was reviewed, and then a theoretical framework was developed based on this information and the psychometric characteristics of the scale were introduced. The results of the confirmatory factor analysis revealed that the fit indices were compatible with two-dimensional structure. These two dimensions have been …


Inclusive Sand-Shoeing Training Program For Students With And Without Intellectual Disabilities In Hong Kong, Peggy Hiu Nam Choi, Siu Yin Cheung Jan 2019

Inclusive Sand-Shoeing Training Program For Students With And Without Intellectual Disabilities In Hong Kong, Peggy Hiu Nam Choi, Siu Yin Cheung

Faculty of Design & Environment (THEi)

One of the sports for the Special Olympics is snow-shoeing. In Hong Kong training for this sport occurs in the sand and is called sand-shoeing. The purpose of this study was to evaluate a sandshoeing training program (STP) of the Special Olympics Hong Kong (SOHK). Two hundreds and thirty-two Grade 1 to 12 special school students with intellectual disabilities (ID), and 66 university students without ID participated in the STP. Three different types of survey were designed for students with ID, university students, and special school teachers. Descriptive data from the feedback of these three parties on the STP were …


Pick’S Disease And Subdural Haematoma: A Diagnostic Red Herring, Philip Adebayo, Funmilola Taiwo, Fatma Bakshi, Sunham Nur Jan 2019

Pick’S Disease And Subdural Haematoma: A Diagnostic Red Herring, Philip Adebayo, Funmilola Taiwo, Fatma Bakshi, Sunham Nur

Faculty of Health Sciences, East Africa

Frontotemporal dementia (FTD), otherwise known as Pick’s disease, is a clinically heterogeneous group of sporadic and familial neurodegenerative diseases. These conditions are characterized by dementia, behavioural and language dysfunction and loss of executive skills resulting from the degeneration of the frontal and temporal lobes. Although reversible causes of dementia are always sought during the evaluation of patients with progressive cognitive decline, the occurrence of a reversible aetiology may distract from evaluating for neurodegenerative causes of dementia. This report is about a 66-year old man with features of FTD and superimposed chronic subdural haematoma.


Efficacy Of A Mixture Of Neem Seed Oil (Azadirachta Indica) And Coconut Oil (Cocos Nucifera) For Topical Treatment Of Tungiasis. A Randomized Controlled, Proof-Of-Principle Study, Lynne Elson, Kithi Randu, Hermann Feldmeier, Ulrike Fillinger Jan 2019

Efficacy Of A Mixture Of Neem Seed Oil (Azadirachta Indica) And Coconut Oil (Cocos Nucifera) For Topical Treatment Of Tungiasis. A Randomized Controlled, Proof-Of-Principle Study, Lynne Elson, Kithi Randu, Hermann Feldmeier, Ulrike Fillinger

All Peer-Reviewed Publications

Background Tungiasis is a neglected tropical skin disease caused by the female sand flea (Tunga penetrans), which burrows into the skin causing intense pain, itching and debilitation. People in endemic countries do not have access to an effective and safe home treatment. The aim of this study was to determine the efficacy of a traditionally used and readily available mixture of neem and coconut oil for treatment of tungiasis in coastal Kenya. Methodology Ninety-six children aged 6-14 years with at least one embedded viable flea were randomized to be treated with either a mixture of 20% neem (Azadirachta indica) seed …


Cannabis Consumption Patterns Explain The East-West Gradient In Canadian Neural Tube Defect Incidence: An Ecological Study, Albert Stuart Reece, Gary Kenneth Hulse Jan 2019

Cannabis Consumption Patterns Explain The East-West Gradient In Canadian Neural Tube Defect Incidence: An Ecological Study, Albert Stuart Reece, Gary Kenneth Hulse

Research Datasets

While a known link between prenatal cannabis exposure and anencephaly exists, the relationship of prenatal cannabis exposure with neural tube defects (NTDs) generally has not been defined. Published data from Canada Health and Statistics Canada were used to assess this relationship. Both cannabis use and NTDs were shown to follow an east-west and north-south gradient. Last year cannabis consumption was significantly associated (P < .0001; cannabis use–time interaction P < .0001). These results were confirmed when estimates of termination for anomaly were used. Canada Health population data allowed the calculation of an NTD odds ratio) of 1.27 (95% confidence interval = 1.19-1.37; P < 10−11) for high-risk provinces versus the remainder with an attributable fraction in exposed populations of 16.52% (95% confidence interval = 12.22-20.62). Data show a robust positive statistical association between cannabis consumption as both a qualitative and quantitative variable and NTDs on a background of declining NTD incidence. In the context of multiple mechanistic pathways these strong statistical findings implicate causal mechanisms.


Reexamining Overuse Of Frequent Observation For New Admissions On Psychiatric Units To Increase Nurse/Patient Engagement, Samuel Novela Dec 2018

Reexamining Overuse Of Frequent Observation For New Admissions On Psychiatric Units To Increase Nurse/Patient Engagement, Samuel Novela

Master's Theses

People in California who suffer from mental health conditions are often admitted involuntarily to hospitals on 72 hour psychiatric evaluation holds if they are deemed imminently dangerous to themselves, or others, or are gravely disabled. Observational patient safety checks are performed and based on patient acuity and hospital standards. Variations exist among different clinical settings with regard to best practices and the patient subpopulations that may warrant less frequent safety checks. Nurses experience different levels of satisfaction with regard to frequency of safety checks because there is no national consensus on which subsets of patients may require them. A senior …


Assessment Of Interprofessional Team Collaboration Scale (Aitcs): Further Testing And Instrument Revision., Carole Orchard, Linda L Pederson, Emily Read, Cornelia Mahler, Heather Laschinger Dec 2018

Assessment Of Interprofessional Team Collaboration Scale (Aitcs): Further Testing And Instrument Revision., Carole Orchard, Linda L Pederson, Emily Read, Cornelia Mahler, Heather Laschinger

Nursing Publications

INTRODUCTION: The need to be able to assess collaborative practice in health care teams has been recognized in response to the direction for team-based care in a number of policy documents. The purpose of this study is to report on further refinement of such a measurement instrument, the Assessment of Interprofessional Team Collaboration Scale (AITCS) first published in 2012. To support this refinement, two objectives were set: Objective 1: to determine whether the items from the data collected in 2016 load on the same factors as found for the 2012 version of the 37-item AITCS. Objective 2: to determine whether …


A Multiplex Assay For The Sensitive Detection And Quantification Of Male And Female Plasmodium Falciparum Gametocytes, Lisette Meerstein-Kessel, Chiara Andolina, Elvira Carrio, Almahamoudou Mahamar, Patrick Sawa, Halimatou Diawara, Marga Van De Vegte-Bolmer, Will Stone, Katharine A. Collins, Petra Schneider, Alassane Dicko, Chris Drakeley, Ingrid Felger, Till Voss, Kjerstin Lanke, Teun Bousema Nov 2018

A Multiplex Assay For The Sensitive Detection And Quantification Of Male And Female Plasmodium Falciparum Gametocytes, Lisette Meerstein-Kessel, Chiara Andolina, Elvira Carrio, Almahamoudou Mahamar, Patrick Sawa, Halimatou Diawara, Marga Van De Vegte-Bolmer, Will Stone, Katharine A. Collins, Petra Schneider, Alassane Dicko, Chris Drakeley, Ingrid Felger, Till Voss, Kjerstin Lanke, Teun Bousema

All Peer-Reviewed Publications

Background: The transmission of malaria to mosquitoes depends on the presence of gametocytes that circulate in the peripheral blood of infected human hosts. Sensitive estimates of the densities of female gametocytes (FG) and male gametocytes (MG) may allow the prediction of infectivity to mosquitoes and thus a molecular estimate of the human infectious reservoir for transmission. Methods: A novel multiplex qRT-PCR assay with intron-spanning primers was developed for the parallel quantification of FG and MG. CCp4 (PF3D7-0903800) transcripts specific for FG and PfMGET (PF3D7-1469900) transcripts specific for MG were quantified in total nucleic acids. The assay was validated on sex-sorted …


Sodalis Glossinidius Presence In Wild Tsetse Is Only Associated With Presence Of Trypanosomes In Complex Interactions With Other Tsetse-Specific Factors 06 Biological Sciences 0604 Genetics, Manun Channumsin, Marc Ciosi, Dan Masiga, C. Michael R. Turner, Barbara K. Mable Nov 2018

Sodalis Glossinidius Presence In Wild Tsetse Is Only Associated With Presence Of Trypanosomes In Complex Interactions With Other Tsetse-Specific Factors 06 Biological Sciences 0604 Genetics, Manun Channumsin, Marc Ciosi, Dan Masiga, C. Michael R. Turner, Barbara K. Mable

All Peer-Reviewed Publications

Background: Susceptibility of tsetse flies (Glossina spp.) to trypanosomes of both humans and animals has been associated with the presence of the endosymbiont Sodalis glossinidius. However, intrinsic biological characteristics of the flies and environmental factors can influence the presence of both S. glossinidius and the parasites. It thus remains unclear whether it is the S. glossinidius or other attributes of the flies that explains the apparent association. The objective of this study was to test whether the presence of Trypanosoma vivax, T. congolense and T. brucei are related to the presence of S. glossinidius in tsetse flies when other factors …


Enhancing Vector Refractoriness To Trypanosome Infection: Achievements, Challenges And Perspectives, Henry M. Kariithi, Irene K. Meki, Daniela I. Schneider, Linda De Vooght, Fathiya M. Khamis, Anne Geiger, Guler Demirbaş-Uzel, Just M. Vlak, Ikbal Agah Ince, Sorge Kelm, Flobert Njiokou, Florence N. Wamwiri, Imna I. Malele, Brian L. Weiss, Adly M.M. Abd-Alla Nov 2018

Enhancing Vector Refractoriness To Trypanosome Infection: Achievements, Challenges And Perspectives, Henry M. Kariithi, Irene K. Meki, Daniela I. Schneider, Linda De Vooght, Fathiya M. Khamis, Anne Geiger, Guler Demirbaş-Uzel, Just M. Vlak, Ikbal Agah Ince, Sorge Kelm, Flobert Njiokou, Florence N. Wamwiri, Imna I. Malele, Brian L. Weiss, Adly M.M. Abd-Alla

All Peer-Reviewed Publications

With the absence of effective prophylactic vaccines and drugs against African trypanosomosis, control of this group of zoonotic neglected tropical diseases depends the control of the tsetse fly vector. When applied in an area-wide insect pest management approach, the sterile insect technique (SIT) is effective in eliminating single tsetse species from isolated populations. The need to enhance the effectiveness of SIT led to the concept of investigating tsetse-trypanosome interactions by a consortium of researchers in a five-year (2013-2018) Coordinated Research Project (CRP) organized by the Joint Division of FAO/IAEA. The goal of this CRP was to elucidate tsetse-symbiome-pathogen molecular interactions …


Predicting Posttraumatic Stress And Depression Symptoms Among Adolescents In The Extended Postpartum Period, John P. Connolly, Cheryl A. Anderson Nov 2018

Predicting Posttraumatic Stress And Depression Symptoms Among Adolescents In The Extended Postpartum Period, John P. Connolly, Cheryl A. Anderson

Nursing Faculty Publications & Presentations - Archive

Background: Adolescent childbirth continues as a public health concern, and investigation of postpartum posttraumatic stress symptoms (PTSS) and depression is important to inform future research and practice. Longitudinal studies exploring PTSS alone or in combination with depression are non-existent for postpartum adolescent populations. This study aimed to identify stress/PTSS and depression symptoms at 72 hours and three, six, and nine months postpartum, and determine if symptoms at each time point predicted later symptoms. Methods: A convenience sample of 303 adolescents 13e19 years of age were recruited from two postpartum units of one, large, public hospital. The Impact of Event Scale …


Steve & Anita, Steve, Anita, Tsos Nov 2018

Steve & Anita, Steve, Anita, Tsos

TSOS Interview Gallery

Steve and Anita Canfield helped the Church of Jesus Christ of Latter-day Saints in Turkey. They helped send blankets, coats, and washing machines to Syrian refugees. They were assigned to Frankfurt to assess refugee camps, soup kitchens, warehouses, and immigrant communities. The couple visited refugee camps and soup kitchens all over Europe to determine what was needed most by refugees.

The Canfields established the Friendship Center in Rome. The center offers classes in Italian, English, Italian, and a Red Cross course. It also has a gospel choir, a popular activity for primarily African refugees. The LDS Church has plans to …


Using Pair Approximation Methods To Analyze Behavior Of A Probabilistic Cellular Automaton Model For Intracellular Cardiac Calcium Dynamics, Robert J. Rovetti Oct 2018

Using Pair Approximation Methods To Analyze Behavior Of A Probabilistic Cellular Automaton Model For Intracellular Cardiac Calcium Dynamics, Robert J. Rovetti

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.


Sri Model Of The 2017-2018 Flu Season, Jorge Perez Oct 2018

Sri Model Of The 2017-2018 Flu Season, Jorge Perez

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.


Ex-Post Economic Analysis Of Push-Pull Technology In Eastern Uganda, Ruth T. Chepchirchir, Ibrahim Macharia, Alice W. Murage, Charles A.O. Midega, Zeyaur R. Khan Oct 2018

Ex-Post Economic Analysis Of Push-Pull Technology In Eastern Uganda, Ruth T. Chepchirchir, Ibrahim Macharia, Alice W. Murage, Charles A.O. Midega, Zeyaur R. Khan

All Peer-Reviewed Publications

Push–pull technology (PPT) simultaneously reduces the impact of three major production constraints, pests, weeds and poor soil, to cereal–livestock farming in Africa. In order to ascertain the social value of the technology and to make decisions about the trade-offs in the allocation of scarce resources in research, gross margin analysis and the Dynamic Research for Evaluation Management economic surplus model were applied to calculate and analyze the benefits of PPT for 568 households located in four districts in eastern Uganda. The results showed that with PPT the economy of these districts would derive an overall net gain of 3.8 million …


The Study Of The Intestinal Microbiocenosis Of Children Suffering From Coliant Diseases With Traditional Methods, O. K. Saduilayev Sep 2018

The Study Of The Intestinal Microbiocenosis Of Children Suffering From Coliant Diseases With Traditional Methods, O. K. Saduilayev

Central Asian Problems of Modern Science and Education

The article summarizes the moderate impact of the use of traditional methods of treatment in children with colienteritis living in the South Aral Sea


Features Of Food Manifestation Allergy In Children With Atopic Dermatitis, K. D. Nazarov, A. G. Ganiev, S. A. Urumbaeva, A. A. Abdurashidov Sep 2018

Features Of Food Manifestation Allergy In Children With Atopic Dermatitis, K. D. Nazarov, A. G. Ganiev, S. A. Urumbaeva, A. A. Abdurashidov

Central Asian Problems of Modern Science and Education

The results of the evaluation of the frequency and risk factors of developing food allergies, particularly its etiological structure and immunological characteristics in children of HELL, which has several pharmacologically stable chronic diseases presented in the article. Food Allergy was detected in 65% of children. Etiological structure of food sensitization has its ACTUAL PROBLEMS OF MODERN SCIENCE, EDUCATION AND TRAINING IN THE REGION 2018-III 32 own characteristics in accordance with the nosology of the disease. Children with atypical signs of disease show a combination of pathogenetic mechanisms of development of food Allergy


Immunological Mechanisms Of Development Of Complicated Forms Of Atopic Dermatitis, K. D. Nazarov, A. G. Ganiev, O. Efimenko, A. R. Botirov Sep 2018

Immunological Mechanisms Of Development Of Complicated Forms Of Atopic Dermatitis, K. D. Nazarov, A. G. Ganiev, O. Efimenko, A. R. Botirov

Central Asian Problems of Modern Science and Education

Examination of 32 children with atopic dermatitis, complicated by staphylococcal infection. Revealed violations of B-cell, humoral immunity and phagocytic activity of neutrophils. The revealed violations of immunological parameters in children suffering from atopic dermatitis complicated by staphylococcal infection are the basis for the appointment of immunomodulators as part of complex therapy aimed at stimulating the B-cell and humoral immunity, as well as the phagocytic activity of neutrophils


Maternal Mortality In Non-Hispanic Black Women, Amelia Major Aug 2018

Maternal Mortality In Non-Hispanic Black Women, Amelia Major

Grace Peterson Nursing Research Colloquium

Background: The United States has the highest maternal mortality among all developed countries, among these mothers, non-Hispanic black women are three times more likely than women of any other racial group to die from pregnancy-related causes.

Purpose: To investigate racial disparities among pregnant women who die from pregnancy related causes (maternal mortality) and determine possible interventions to improve outcomes.

Methods: An integrative literature review was conducted to analyze peer-reviewed articles published from 2007 to 2018; a computerized search of literature was performed using Cumulative Index to Nursing and Health Literature (CINAHL), Proquest Nursing and Allied Health Sources, …


Medline-Indexed, In Process For Medline, And Non-Indexed Records Added To Pubmed And Pubmed Central, 1990 And 2000-2017, Peace Ossom-Williamson, Christian I.J. Minter Jul 2018

Medline-Indexed, In Process For Medline, And Non-Indexed Records Added To Pubmed And Pubmed Central, 1990 And 2000-2017, Peace Ossom-Williamson, Christian I.J. Minter

UTA Libraries Datasets - Archive

These files include the underlying data from the PubMed and Scholarly Communication research investigation.


Plasmodium Falciparum Gametocyte Dynamics After Pyronaridine-Artesunate Or Artemether-Lumefantrine Treatment Nct02411994 Nct, Johanna M. Roth, Patrick Sawa, George Omweri, Victor Osoti, Nicodemus Makio, John Bradley, Teun Bousema, Henk D.F.H. Schallig, Pètra F. Mens Jun 2018

Plasmodium Falciparum Gametocyte Dynamics After Pyronaridine-Artesunate Or Artemether-Lumefantrine Treatment Nct02411994 Nct, Johanna M. Roth, Patrick Sawa, George Omweri, Victor Osoti, Nicodemus Makio, John Bradley, Teun Bousema, Henk D.F.H. Schallig, Pètra F. Mens

All Peer-Reviewed Publications

Background: Artemisinin-based combinations differ in their impact on gametocyte prevalence and density. This study assessed female and male gametocyte dynamics after treating children with uncomplicated Plasmodium falciparum malaria with either pyronaridine-artesunate (PA) or artemether-lumefantrine (AL). Methods: Kenyan children with uncomplicated Plasmodium falciparum malaria were included and randomly assigned to PA or AL treatment. Filter paper blood samples were collected as a source of RNA for quantitative reverse-transcription PCR (qRT-PCR) and nucleic acid sequence based amplification (QT-NASBA) to detect female gametocytes (targeting Pfs25 mRNA). Male gametocytes were detected by qRT-PCR (targeting PfMGET mRNA). Duration of gametocyte carriage, the female and male …


Polygenic Scores For Metabolic Traits And Related Drug Prescriptions In The Michigan Genomics Initiative, Samuel K. Handelman, Xiaomeng Du, Yanhua H. Chen, Elizabeth K. Speliotes Jun 2018

Polygenic Scores For Metabolic Traits And Related Drug Prescriptions In The Michigan Genomics Initiative, Samuel K. Handelman, Xiaomeng Du, Yanhua H. Chen, Elizabeth K. Speliotes

Biology and Medicine Through Mathematics Conference

No abstract provided.


Modeling The Evolutionary History Of A Tumor, Julia Chifman May 2018

Modeling The Evolutionary History Of A Tumor, Julia Chifman

Biology and Medicine Through Mathematics Conference

No abstract provided.


A Modified Method Of High Molecular Weight Adsorbable Organic Chlorine Measurement In Saline Water: Dialysis Pretreatment, Jiajian Liu, Li Ling, Yi Li, Chao Wang, Chii Shang May 2018

A Modified Method Of High Molecular Weight Adsorbable Organic Chlorine Measurement In Saline Water: Dialysis Pretreatment, Jiajian Liu, Li Ling, Yi Li, Chao Wang, Chii Shang

Faculty of Science & Technology (THEi)

Adsorbable organic halogen is a mean to quantify total organic halogen, which is an important toxicity indicator in disinfection byproduct studies. However, quantification of low concentrations of adsorbable organic chlorine (AOCl) formation in seawater chlorination using the USEPAMethod 9020Bwas found inaccurate due to the presence of high concentrations of chloride. In this study, a dialysis-based pretreatment techniquewas proposed, optimized and adopted to eliminate the interference of chloride in quantifying low concentrations of AOCl inseawater. A volumetric ratio of dialysis samples to continuous-flow deionized water at 1:1200 was found sufficient to remove over 99% of chloride. As a result, chloride to …